diff options
Diffstat (limited to 'indra/llcommon')
| -rw-r--r-- | indra/llcommon/CMakeLists.txt | 3 | ||||
| -rw-r--r-- | indra/llcommon/llapp.cpp | 4 | ||||
| -rw-r--r-- | indra/llcommon/llapr.cpp | 445 | ||||
| -rw-r--r-- | indra/llcommon/llapr.h | 107 | ||||
| -rw-r--r-- | indra/llcommon/llaprpool.cpp | 202 | ||||
| -rw-r--r-- | indra/llcommon/llaprpool.h | 256 | ||||
| -rw-r--r-- | indra/llcommon/llcommon.cpp | 13 | ||||
| -rw-r--r-- | indra/llcommon/llcommon.h | 2 | ||||
| -rw-r--r-- | indra/llcommon/llerror.cpp | 3 | ||||
| -rw-r--r-- | indra/llcommon/llerror.h | 1 | ||||
| -rw-r--r-- | indra/llcommon/llfixedbuffer.cpp | 3 | ||||
| -rw-r--r-- | indra/llcommon/llmemory.cpp | 1836 | ||||
| -rw-r--r-- | indra/llcommon/llmemory.h | 325 | ||||
| -rw-r--r-- | indra/llcommon/llscopedvolatileaprpool.h | 52 | ||||
| -rw-r--r-- | indra/llcommon/llthread.cpp | 241 | ||||
| -rw-r--r-- | indra/llcommon/llthread.h | 133 | ||||
| -rw-r--r-- | indra/llcommon/llthreadsafequeue.cpp | 15 | ||||
| -rw-r--r-- | indra/llcommon/llthreadsafequeue.h | 16 | ||||
| -rw-r--r-- | indra/llcommon/llworkerthread.cpp | 8 | ||||
| -rw-r--r-- | indra/llcommon/llworkerthread.h | 3 |
20 files changed, 2994 insertions, 674 deletions
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt index c755020a64..cc6bddc4da 100644 --- a/indra/llcommon/CMakeLists.txt +++ b/indra/llcommon/CMakeLists.txt @@ -31,6 +31,7 @@ set(llcommon_SOURCE_FILES llallocator_heap_profile.cpp llapp.cpp llapr.cpp + llaprpool.cpp llassettype.cpp llavatarname.cpp llbase32.cpp @@ -80,6 +81,7 @@ set(llcommon_SOURCE_FILES llrand.cpp llrefcount.cpp llrun.cpp + llscopedvolatileaprpool.h llsd.cpp llsdserialize.cpp llsdserialize_xml.cpp @@ -122,6 +124,7 @@ set(llcommon_HEADER_FILES llavatarname.h llapp.h llapr.h + llaprpool.h llassettype.h llassoclist.h llavatarconstants.h diff --git a/indra/llcommon/llapp.cpp b/indra/llcommon/llapp.cpp index ed192a9975..a8b7106078 100644 --- a/indra/llcommon/llapp.cpp +++ b/indra/llcommon/llapp.cpp @@ -137,10 +137,6 @@ void LLApp::commonCtor() mOptions.append(sd); } - // Make sure we clean up APR when we exit - // Don't need to do this if we're cleaning up APR in the destructor - //atexit(ll_cleanup_apr); - // Set the application to this instance. sApplication = this; diff --git a/indra/llcommon/llapr.cpp b/indra/llcommon/llapr.cpp index d1c44c9403..1e4a51102e 100644 --- a/indra/llcommon/llapr.cpp +++ b/indra/llcommon/llapr.cpp @@ -29,212 +29,8 @@ #include "linden_common.h" #include "llapr.h" #include "apr_dso.h" +#include "llscopedvolatileaprpool.h" -apr_pool_t *gAPRPoolp = NULL; // Global APR memory pool -LLVolatileAPRPool *LLAPRFile::sAPRFilePoolp = NULL ; //global volatile APR memory pool. -apr_thread_mutex_t *gLogMutexp = NULL; -apr_thread_mutex_t *gCallStacksLogMutexp = NULL; - -const S32 FULL_VOLATILE_APR_POOL = 1024 ; //number of references to LLVolatileAPRPool - -void ll_init_apr() -{ - if (!gAPRPoolp) - { - // Initialize APR and create the global pool - apr_initialize(); - apr_pool_create(&gAPRPoolp, NULL); - - // Initialize the logging mutex - apr_thread_mutex_create(&gLogMutexp, APR_THREAD_MUTEX_UNNESTED, gAPRPoolp); - apr_thread_mutex_create(&gCallStacksLogMutexp, APR_THREAD_MUTEX_UNNESTED, gAPRPoolp); - } - - if(!LLAPRFile::sAPRFilePoolp) - { - LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(FALSE) ; - } -} - - -void ll_cleanup_apr() -{ - LL_INFOS("APR") << "Cleaning up APR" << LL_ENDL; - - if (gLogMutexp) - { - // Clean up the logging mutex - - // All other threads NEED to be done before we clean up APR, so this is okay. - apr_thread_mutex_destroy(gLogMutexp); - gLogMutexp = NULL; - } - if (gCallStacksLogMutexp) - { - // Clean up the logging mutex - - // All other threads NEED to be done before we clean up APR, so this is okay. - apr_thread_mutex_destroy(gCallStacksLogMutexp); - gCallStacksLogMutexp = NULL; - } - if (gAPRPoolp) - { - apr_pool_destroy(gAPRPoolp); - gAPRPoolp = NULL; - } - if (LLAPRFile::sAPRFilePoolp) - { - delete LLAPRFile::sAPRFilePoolp ; - LLAPRFile::sAPRFilePoolp = NULL ; - } - apr_terminate(); -} - -// -// -//LLAPRPool -// -LLAPRPool::LLAPRPool(apr_pool_t *parent, apr_size_t size, BOOL releasePoolFlag) - : mParent(parent), - mReleasePoolFlag(releasePoolFlag), - mMaxSize(size), - mPool(NULL) -{ - createAPRPool() ; -} - -LLAPRPool::~LLAPRPool() -{ - releaseAPRPool() ; -} - -void LLAPRPool::createAPRPool() -{ - if(mPool) - { - return ; - } - - mStatus = apr_pool_create(&mPool, mParent); - ll_apr_warn_status(mStatus) ; - - if(mMaxSize > 0) //size is the number of blocks (which is usually 4K), NOT bytes. - { - apr_allocator_t *allocator = apr_pool_allocator_get(mPool); - if (allocator) - { - apr_allocator_max_free_set(allocator, mMaxSize) ; - } - } -} - -void LLAPRPool::releaseAPRPool() -{ - if(!mPool) - { - return ; - } - - if(!mParent || mReleasePoolFlag) - { - apr_pool_destroy(mPool) ; - mPool = NULL ; - } -} - -//virtual -apr_pool_t* LLAPRPool::getAPRPool() -{ - return mPool ; -} - -LLVolatileAPRPool::LLVolatileAPRPool(BOOL is_local, apr_pool_t *parent, apr_size_t size, BOOL releasePoolFlag) - : LLAPRPool(parent, size, releasePoolFlag), - mNumActiveRef(0), - mNumTotalRef(0), - mMutexPool(NULL), - mMutexp(NULL) -{ - //create mutex - if(!is_local) //not a local apr_pool, that is: shared by multiple threads. - { - apr_pool_create(&mMutexPool, NULL); // Create a pool for mutex - apr_thread_mutex_create(&mMutexp, APR_THREAD_MUTEX_UNNESTED, mMutexPool); - } -} - -LLVolatileAPRPool::~LLVolatileAPRPool() -{ - //delete mutex - if(mMutexp) - { - apr_thread_mutex_destroy(mMutexp); - apr_pool_destroy(mMutexPool); - } -} - -// -//define this virtual function to avoid any mistakenly calling LLAPRPool::getAPRPool(). -// -//virtual -apr_pool_t* LLVolatileAPRPool::getAPRPool() -{ - return LLVolatileAPRPool::getVolatileAPRPool() ; -} - -apr_pool_t* LLVolatileAPRPool::getVolatileAPRPool() -{ - LLScopedLock lock(mMutexp) ; - - mNumTotalRef++ ; - mNumActiveRef++ ; - - if(!mPool) - { - createAPRPool() ; - } - - return mPool ; -} - -void LLVolatileAPRPool::clearVolatileAPRPool() -{ - LLScopedLock lock(mMutexp) ; - - if(mNumActiveRef > 0) - { - mNumActiveRef--; - if(mNumActiveRef < 1) - { - if(isFull()) - { - mNumTotalRef = 0 ; - - //destroy the apr_pool. - releaseAPRPool() ; - } - else - { - //This does not actually free the memory, - //it just allows the pool to re-use this memory for the next allocation. - apr_pool_clear(mPool) ; - } - } - } - else - { - llassert_always(mNumActiveRef > 0) ; - } - - //paranoia check if the pool is jammed. - //will remove the check before going to release. - llassert_always(mNumTotalRef < (FULL_VOLATILE_APR_POOL << 2)) ; -} - -BOOL LLVolatileAPRPool::isFull() -{ - return mNumTotalRef > FULL_VOLATILE_APR_POOL ; -} //--------------------------------------------------------------------- // // LLScopedLock @@ -313,15 +109,17 @@ void ll_apr_assert_status(apr_status_t status, apr_dso_handle_t *handle) // LLAPRFile::LLAPRFile() : mFile(NULL), - mCurrentFilePoolp(NULL) + mVolatileFilePoolp(NULL), + mRegularFilePoolp(NULL) { } -LLAPRFile::LLAPRFile(const std::string& filename, apr_int32_t flags, LLVolatileAPRPool* pool) +LLAPRFile::LLAPRFile(std::string const& filename, apr_int32_t flags, S32* sizep, access_t access_type) : mFile(NULL), - mCurrentFilePoolp(NULL) + mVolatileFilePoolp(NULL), + mRegularFilePoolp(NULL) { - open(filename, flags, pool); + open(filename, flags, access_type, sizep); } LLAPRFile::~LLAPRFile() @@ -338,36 +136,58 @@ apr_status_t LLAPRFile::close() mFile = NULL ; } - if(mCurrentFilePoolp) + if (mVolatileFilePoolp) { - mCurrentFilePoolp->clearVolatileAPRPool() ; - mCurrentFilePoolp = NULL ; + mVolatileFilePoolp->clearVolatileAPRPool() ; + mVolatileFilePoolp = NULL ; + } + + if (mRegularFilePoolp) + { + delete mRegularFilePoolp; + mRegularFilePoolp = NULL; } return ret ; } -apr_status_t LLAPRFile::open(const std::string& filename, apr_int32_t flags, LLVolatileAPRPool* pool, S32* sizep) +apr_status_t LLAPRFile::open(std::string const& filename, apr_int32_t flags, access_t access_type, S32* sizep) { - apr_status_t s ; - - //check if already open some file - llassert_always(!mFile) ; - llassert_always(!mCurrentFilePoolp) ; - - apr_pool_t* apr_pool = pool ? pool->getVolatileAPRPool() : NULL ; - s = apr_file_open(&mFile, filename.c_str(), flags, APR_OS_DEFAULT, getAPRFilePool(apr_pool)); + llassert_always(!mFile); + llassert_always(!mVolatileFilePoolp && !mRegularFilePoolp); - if (s != APR_SUCCESS || !mFile) + apr_status_t status; + { + apr_pool_t* apr_file_open_pool; // The use of apr_pool_t is OK here. + // This is a temporary variable for a pool that is passed directly to apr_file_open below. + if (access_type == short_lived) + { + // Use a "volatile" thread-local pool. + mVolatileFilePoolp = &LLThreadLocalData::tldata().mVolatileAPRPool; + // Access the pool and increment its reference count. + // The reference count of LLVolatileAPRPool objects will be decremented + // again in LLAPRFile::close by calling mVolatileFilePoolp->clearVolatileAPRPool(). + apr_file_open_pool = mVolatileFilePoolp->getVolatileAPRPool(); + } + else + { + mRegularFilePoolp = new LLAPRPool(LLThreadLocalData::tldata().mRootPool); + apr_file_open_pool = (*mRegularFilePoolp)(); + } + status = apr_file_open(&mFile, filename.c_str(), flags, APR_OS_DEFAULT, apr_file_open_pool); + } + if (status != APR_SUCCESS || !mFile) { mFile = NULL ; - + close() ; if (sizep) { *sizep = 0; } + return status; } - else if (sizep) + + if (sizep) { S32 file_size = 0; apr_off_t offset = 0; @@ -381,49 +201,7 @@ apr_status_t LLAPRFile::open(const std::string& filename, apr_int32_t flags, LLV *sizep = file_size; } - if(!mCurrentFilePoolp) - { - mCurrentFilePoolp = pool ; - - if(!mFile) - { - close() ; - } - } - - return s ; -} - -//use gAPRPoolp. -apr_status_t LLAPRFile::open(const std::string& filename, apr_int32_t flags, BOOL use_global_pool) -{ - apr_status_t s; - - //check if already open some file - llassert_always(!mFile) ; - llassert_always(!mCurrentFilePoolp) ; - llassert_always(use_global_pool) ; //be aware of using gAPRPoolp. - - s = apr_file_open(&mFile, filename.c_str(), flags, APR_OS_DEFAULT, gAPRPoolp); - if (s != APR_SUCCESS || !mFile) - { - mFile = NULL ; - close() ; - return s; - } - - return s; -} - -apr_pool_t* LLAPRFile::getAPRFilePool(apr_pool_t* pool) -{ - if(!pool) - { - mCurrentFilePoolp = sAPRFilePoolp ; - return mCurrentFilePoolp->getVolatileAPRPool() ; - } - - return pool ; + return status; } // File I/O @@ -482,45 +260,6 @@ S32 LLAPRFile::seek(apr_seek_where_t where, S32 offset) // //static -apr_status_t LLAPRFile::close(apr_file_t* file_handle, LLVolatileAPRPool* pool) -{ - apr_status_t ret = APR_SUCCESS ; - if(file_handle) - { - ret = apr_file_close(file_handle); - file_handle = NULL ; - } - - if(pool) - { - pool->clearVolatileAPRPool() ; - } - - return ret ; -} - -//static -apr_file_t* LLAPRFile::open(const std::string& filename, LLVolatileAPRPool* pool, apr_int32_t flags) -{ - apr_status_t s; - apr_file_t* file_handle ; - - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - - s = apr_file_open(&file_handle, filename.c_str(), flags, APR_OS_DEFAULT, pool->getVolatileAPRPool()); - if (s != APR_SUCCESS || !file_handle) - { - ll_apr_warn_status(s); - LL_WARNS("APR") << " Attempting to open filename: " << filename << LL_ENDL; - file_handle = NULL ; - close(file_handle, pool) ; - return NULL; - } - - return file_handle ; -} - -//static S32 LLAPRFile::seek(apr_file_t* file_handle, apr_seek_where_t where, S32 offset) { if(!file_handle) @@ -553,13 +292,15 @@ S32 LLAPRFile::seek(apr_file_t* file_handle, apr_seek_where_t where, S32 offset) } //static -S32 LLAPRFile::readEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool) +S32 LLAPRFile::readEx(const std::string& filename, void *buf, S32 offset, S32 nbytes) { - //***************************************** - apr_file_t* file_handle = open(filename, pool, APR_READ|APR_BINARY); - //***************************************** - if (!file_handle) + apr_file_t* file_handle; + LLScopedVolatileAPRPool pool; + apr_status_t s = apr_file_open(&file_handle, filename.c_str(), APR_READ|APR_BINARY, APR_OS_DEFAULT, pool); + if (s != APR_SUCCESS || !file_handle) { + ll_apr_warn_status(s); + LL_WARNS("APR") << " while attempting to open file \"" << filename << '"' << LL_ENDL; return 0; } @@ -589,14 +330,13 @@ S32 LLAPRFile::readEx(const std::string& filename, void *buf, S32 offset, S32 nb } } - //***************************************** - close(file_handle, pool) ; - //***************************************** + apr_file_close(file_handle); + return (S32)bytes_read; } //static -S32 LLAPRFile::writeEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool) +S32 LLAPRFile::writeEx(const std::string& filename, void *buf, S32 offset, S32 nbytes) { apr_int32_t flags = APR_CREATE|APR_WRITE|APR_BINARY; if (offset < 0) @@ -605,11 +345,13 @@ S32 LLAPRFile::writeEx(const std::string& filename, void *buf, S32 offset, S32 n offset = 0; } - //***************************************** - apr_file_t* file_handle = open(filename, pool, flags); - //***************************************** - if (!file_handle) + apr_file_t* file_handle; + LLScopedVolatileAPRPool pool; + apr_status_t s = apr_file_open(&file_handle, filename.c_str(), flags, APR_OS_DEFAULT, pool); + if (s != APR_SUCCESS || !file_handle) { + ll_apr_warn_status(s); + LL_WARNS("APR") << " while attempting to open file \"" << filename << '"' << LL_ENDL; return 0; } @@ -639,21 +381,18 @@ S32 LLAPRFile::writeEx(const std::string& filename, void *buf, S32 offset, S32 n } } - //***************************************** - LLAPRFile::close(file_handle, pool); - //***************************************** + apr_file_close(file_handle); return (S32)bytes_written; } //static -bool LLAPRFile::remove(const std::string& filename, LLVolatileAPRPool* pool) +bool LLAPRFile::remove(const std::string& filename) { apr_status_t s; - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - s = apr_file_remove(filename.c_str(), pool->getVolatileAPRPool()); - pool->clearVolatileAPRPool() ; + LLScopedVolatileAPRPool pool; + s = apr_file_remove(filename.c_str(), pool); if (s != APR_SUCCESS) { @@ -665,13 +404,12 @@ bool LLAPRFile::remove(const std::string& filename, LLVolatileAPRPool* pool) } //static -bool LLAPRFile::rename(const std::string& filename, const std::string& newname, LLVolatileAPRPool* pool) +bool LLAPRFile::rename(const std::string& filename, const std::string& newname) { apr_status_t s; - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - s = apr_file_rename(filename.c_str(), newname.c_str(), pool->getVolatileAPRPool()); - pool->clearVolatileAPRPool() ; + LLScopedVolatileAPRPool pool; + s = apr_file_rename(filename.c_str(), newname.c_str(), pool); if (s != APR_SUCCESS) { @@ -683,49 +421,44 @@ bool LLAPRFile::rename(const std::string& filename, const std::string& newname, } //static -bool LLAPRFile::isExist(const std::string& filename, LLVolatileAPRPool* pool, apr_int32_t flags) +bool LLAPRFile::isExist(const std::string& filename, apr_int32_t flags) { - apr_file_t* apr_file; + apr_file_t* file_handle; apr_status_t s; - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - s = apr_file_open(&apr_file, filename.c_str(), flags, APR_OS_DEFAULT, pool->getVolatileAPRPool()); + LLScopedVolatileAPRPool pool; + s = apr_file_open(&file_handle, filename.c_str(), flags, APR_OS_DEFAULT, pool); - if (s != APR_SUCCESS || !apr_file) + if (s != APR_SUCCESS || !file_handle) { - pool->clearVolatileAPRPool() ; return false; } else { - apr_file_close(apr_file) ; - pool->clearVolatileAPRPool() ; + apr_file_close(file_handle); return true; } } //static -S32 LLAPRFile::size(const std::string& filename, LLVolatileAPRPool* pool) +S32 LLAPRFile::size(const std::string& filename) { - apr_file_t* apr_file; + apr_file_t* file_handle; apr_finfo_t info; apr_status_t s; - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - s = apr_file_open(&apr_file, filename.c_str(), APR_READ, APR_OS_DEFAULT, pool->getVolatileAPRPool()); + LLScopedVolatileAPRPool pool; + s = apr_file_open(&file_handle, filename.c_str(), APR_READ, APR_OS_DEFAULT, pool); - if (s != APR_SUCCESS || !apr_file) + if (s != APR_SUCCESS || !file_handle) { - pool->clearVolatileAPRPool() ; - return 0; } else { - apr_status_t s = apr_file_info_get(&info, APR_FINFO_SIZE, apr_file); + apr_status_t s = apr_file_info_get(&info, APR_FINFO_SIZE, file_handle); - apr_file_close(apr_file) ; - pool->clearVolatileAPRPool() ; + apr_file_close(file_handle) ; if (s == APR_SUCCESS) { @@ -739,31 +472,29 @@ S32 LLAPRFile::size(const std::string& filename, LLVolatileAPRPool* pool) } //static -bool LLAPRFile::makeDir(const std::string& dirname, LLVolatileAPRPool* pool) +bool LLAPRFile::makeDir(const std::string& dirname) { apr_status_t s; - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - s = apr_dir_make(dirname.c_str(), APR_FPROT_OS_DEFAULT, pool->getVolatileAPRPool()); - pool->clearVolatileAPRPool() ; + LLScopedVolatileAPRPool pool; + s = apr_dir_make(dirname.c_str(), APR_FPROT_OS_DEFAULT, pool); if (s != APR_SUCCESS) { ll_apr_warn_status(s); - LL_WARNS("APR") << " Attempting to make directory: " << dirname << LL_ENDL; + LL_WARNS("APR") << " while attempting to make directory: " << dirname << LL_ENDL; return false; } return true; } //static -bool LLAPRFile::removeDir(const std::string& dirname, LLVolatileAPRPool* pool) +bool LLAPRFile::removeDir(const std::string& dirname) { apr_status_t s; - pool = pool ? pool : LLAPRFile::sAPRFilePoolp ; - s = apr_file_remove(dirname.c_str(), pool->getVolatileAPRPool()); - pool->clearVolatileAPRPool() ; + LLScopedVolatileAPRPool pool; + s = apr_file_remove(dirname.c_str(), pool); if (s != APR_SUCCESS) { diff --git a/indra/llcommon/llapr.h b/indra/llcommon/llapr.h index af33ce666f..3f846f1314 100644 --- a/indra/llcommon/llapr.h +++ b/indra/llcommon/llapr.h @@ -50,71 +50,9 @@ #include "apr_atomic.h" #include "llstring.h" -extern LL_COMMON_API apr_thread_mutex_t* gLogMutexp; -extern apr_thread_mutex_t* gCallStacksLogMutexp; - struct apr_dso_handle_t; - -/** - * @brief initialize the common apr constructs -- apr itself, the - * global pool, and a mutex. - */ -void LL_COMMON_API ll_init_apr(); - -/** - * @brief Cleanup those common apr constructs. - */ -void LL_COMMON_API ll_cleanup_apr(); - -// -//LL apr_pool -//manage apr_pool_t, destroy allocated apr_pool in the destruction function. -// -class LL_COMMON_API LLAPRPool -{ -public: - LLAPRPool(apr_pool_t *parent = NULL, apr_size_t size = 0, BOOL releasePoolFlag = TRUE) ; - virtual ~LLAPRPool() ; - - virtual apr_pool_t* getAPRPool() ; - apr_status_t getStatus() {return mStatus ; } - -protected: - void releaseAPRPool() ; - void createAPRPool() ; - -protected: - apr_pool_t* mPool ; //pointing to an apr_pool - apr_pool_t* mParent ; //parent pool - apr_size_t mMaxSize ; //max size of mPool, mPool should return memory to system if allocated memory beyond this limit. However it seems not to work. - apr_status_t mStatus ; //status when creating the pool - BOOL mReleasePoolFlag ; //if set, mPool is destroyed when LLAPRPool is deleted. default value is true. -}; - -// -//volatile LL apr_pool -//which clears memory automatically. -//so it can not hold static data or data after memory is cleared -// -class LL_COMMON_API LLVolatileAPRPool : public LLAPRPool -{ -public: - LLVolatileAPRPool(BOOL is_local = TRUE, apr_pool_t *parent = NULL, apr_size_t size = 0, BOOL releasePoolFlag = TRUE); - virtual ~LLVolatileAPRPool(); - - /*virtual*/ apr_pool_t* getAPRPool() ; //define this virtual function to avoid any mistakenly calling LLAPRPool::getAPRPool(). - apr_pool_t* getVolatileAPRPool() ; - void clearVolatileAPRPool() ; - - BOOL isFull() ; - -private: - S32 mNumActiveRef ; //number of active pointers pointing to the apr_pool. - S32 mNumTotalRef ; //number of total pointers pointing to the apr_pool since last creating. - - apr_thread_mutex_t *mMutexp; - apr_pool_t *mMutexPool; -} ; +class LLAPRPool; +class LLVolatileAPRPool; /** * @class LLScopedLock @@ -205,15 +143,20 @@ class LL_COMMON_API LLAPRFile : boost::noncopyable // make this non copyable since a copy closes the file private: apr_file_t* mFile ; - LLVolatileAPRPool *mCurrentFilePoolp ; //currently in use apr_pool, could be one of them: sAPRFilePoolp, or a temp pool. + LLVolatileAPRPool* mVolatileFilePoolp; // (Thread local) APR pool currently in use. + LLAPRPool* mRegularFilePoolp; // ...or a regular pool. public: + enum access_t { + long_lived, // Use a global pool for long-lived file accesses. + short_lived // Use a volatile pool for short-lived file accesses. + }; + LLAPRFile() ; - LLAPRFile(const std::string& filename, apr_int32_t flags, LLVolatileAPRPool* pool = NULL); + LLAPRFile(std::string const& filename, apr_int32_t flags, S32* sizep = NULL, access_t access_type = short_lived); ~LLAPRFile() ; - - apr_status_t open(const std::string& filename, apr_int32_t flags, LLVolatileAPRPool* pool = NULL, S32* sizep = NULL); - apr_status_t open(const std::string& filename, apr_int32_t flags, BOOL use_global_pool); //use gAPRPoolp. + + apr_status_t open(const std::string& filename, apr_int32_t flags, access_t access_type, S32* sizep = NULL); apr_status_t close() ; // Returns actual offset, -1 if seek fails @@ -226,32 +169,24 @@ public: apr_file_t* getFileHandle() {return mFile;} -private: - apr_pool_t* getAPRFilePool(apr_pool_t* pool) ; - // //******************************************************************************************************************************* //static components // -public: - static LLVolatileAPRPool *sAPRFilePoolp ; //a global apr_pool for APRFile, which is used only when local pool does not exist. - private: - static apr_file_t* open(const std::string& filename, LLVolatileAPRPool* pool, apr_int32_t flags); - static apr_status_t close(apr_file_t* file, LLVolatileAPRPool* pool) ; static S32 seek(apr_file_t* file, apr_seek_where_t where, S32 offset); public: // returns false if failure: - static bool remove(const std::string& filename, LLVolatileAPRPool* pool = NULL); - static bool rename(const std::string& filename, const std::string& newname, LLVolatileAPRPool* pool = NULL); - static bool isExist(const std::string& filename, LLVolatileAPRPool* pool = NULL, apr_int32_t flags = APR_READ); - static S32 size(const std::string& filename, LLVolatileAPRPool* pool = NULL); - static bool makeDir(const std::string& dirname, LLVolatileAPRPool* pool = NULL); - static bool removeDir(const std::string& dirname, LLVolatileAPRPool* pool = NULL); + static bool remove(const std::string& filename); + static bool rename(const std::string& filename, const std::string& newname); + static bool isExist(const std::string& filename, apr_int32_t flags = APR_READ); + static S32 size(const std::string& filename); + static bool makeDir(const std::string& dirname); + static bool removeDir(const std::string& dirname); // Returns bytes read/written, 0 if read/write fails: - static S32 readEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool = NULL); - static S32 writeEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool = NULL); // offset<0 means append + static S32 readEx(const std::string& filename, void *buf, S32 offset, S32 nbytes); + static S32 writeEx(const std::string& filename, void *buf, S32 offset, S32 nbytes); // offset<0 means append //******************************************************************************************************************************* }; @@ -267,6 +202,4 @@ bool LL_COMMON_API ll_apr_warn_status(apr_status_t status, apr_dso_handle_t* han void LL_COMMON_API ll_apr_assert_status(apr_status_t status); void LL_COMMON_API ll_apr_assert_status(apr_status_t status, apr_dso_handle_t* handle); -extern "C" LL_COMMON_API apr_pool_t* gAPRPoolp; // Global APR memory pool - #endif // LL_LLAPR_H diff --git a/indra/llcommon/llaprpool.cpp b/indra/llcommon/llaprpool.cpp new file mode 100644 index 0000000000..6f21b61b65 --- /dev/null +++ b/indra/llcommon/llaprpool.cpp @@ -0,0 +1,202 @@ +/** + * @file llaprpool.cpp + * + * $LicenseInfo:firstyear=2011&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2011, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + * + * CHANGELOG + * and additional copyright holders. + * + * 04/04/2010 + * - Initial version, written by Aleric Inglewood @ SL + * + * 10/11/2010 + * - Added APR_HAS_THREADS #if's to allow creation and destruction + * of subpools by threads other than the parent pool owner. + */ + +#include "linden_common.h" + +#include "llerror.h" +#include "llaprpool.h" +#include "llthread.h" + +// Create a subpool from parent. +void LLAPRPool::create(LLAPRPool& parent) +{ + llassert(!mPool); // Must be non-initialized. + mParent = &parent; + if (!mParent) // Using the default parameter? + { + // By default use the root pool of the current thread. + mParent = &LLThreadLocalData::tldata().mRootPool; + } + llassert(mParent->mPool); // Parent must be initialized. +#if APR_HAS_THREADS + // As per the documentation of APR (ie http://apr.apache.org/docs/apr/1.4/apr__pools_8h.html): + // + // Note that most operations on pools are not thread-safe: a single pool should only be + // accessed by a single thread at any given time. The one exception to this rule is creating + // a subpool of a given pool: one or more threads can safely create subpools at the same + // time that another thread accesses the parent pool. + // + // In other words, it's safe for any thread to create a (sub)pool, independent of who + // owns the parent pool. + mOwner = apr_os_thread_current(); +#else + mOwner = mParent->mOwner; + llassert(apr_os_thread_equal(mOwner, apr_os_thread_current())); +#endif + apr_status_t const apr_pool_create_status = apr_pool_create(&mPool, mParent->mPool); + llassert_always(apr_pool_create_status == APR_SUCCESS); + llassert(mPool); // Initialized. + apr_pool_cleanup_register(mPool, this, &s_plain_cleanup, &apr_pool_cleanup_null); +} + +// Destroy the (sub)pool, if any. +void LLAPRPool::destroy(void) +{ + // Only do anything if we are not already (being) destroyed. + if (mPool) + { +#if !APR_HAS_THREADS + // If we are a root pool, then every thread may destruct us: in that case + // we have to assume that no other thread will use this pool concurrently, + // of course. Otherwise, if we are a subpool, only the thread that owns + // the parent may destruct us, since that is the pool that is still alive, + // possibly being used by others and being altered here. + llassert(!mParent || apr_os_thread_equal(mParent->mOwner, apr_os_thread_current())); +#endif + apr_pool_t* pool = mPool; // The use of apr_pool_t is OK here. + // Temporary store before destroying the pool. + mPool = NULL; // Mark that we are BEING destructed. + apr_pool_cleanup_kill(pool, this, &s_plain_cleanup); + apr_pool_destroy(pool); + } +} + +bool LLAPRPool::parent_is_being_destructed(void) +{ + return mParent && (!mParent->mPool || mParent->parent_is_being_destructed()); +} + +LLAPRInitialization::LLAPRInitialization(void) +{ + static bool apr_initialized = false; + + if (!apr_initialized) + { + apr_initialize(); + } + + apr_initialized = true; +} + +bool LLAPRRootPool::sCountInitialized = false; +apr_uint32_t volatile LLAPRRootPool::sCount; + +apr_thread_mutex_t* gLogMutexp; +apr_thread_mutex_t* gCallStacksLogMutexp; + +LLAPRRootPool::LLAPRRootPool(void) : LLAPRInitialization(), LLAPRPool(0) +{ + // sCountInitialized don't need locking because when we get here there is still only a single thread. + if (!sCountInitialized) + { + // Initialize the logging mutex + apr_thread_mutex_create(&gLogMutexp, APR_THREAD_MUTEX_UNNESTED, mPool); + apr_thread_mutex_create(&gCallStacksLogMutexp, APR_THREAD_MUTEX_UNNESTED, mPool); + + apr_status_t status = apr_atomic_init(mPool); + llassert_always(status == APR_SUCCESS); + apr_atomic_set32(&sCount, 1); // Set to 1 to account for the global root pool. + sCountInitialized = true; + + // Initialize thread-local APR pool support. + // Because this recursively calls LLAPRRootPool::LLAPRRootPool(void) + // it must be done last, so that sCount is already initialized. + LLThreadLocalData::init(); + } + apr_atomic_inc32(&sCount); +} + +LLAPRRootPool::~LLAPRRootPool() +{ + if (!apr_atomic_dec32(&sCount)) + { + // The last pool was destructed. Cleanup remainder of APR. + LL_INFOS("APR") << "Cleaning up APR" << LL_ENDL; + + if (gLogMutexp) + { + // Clean up the logging mutex + + // All other threads NEED to be done before we clean up APR, so this is okay. + apr_thread_mutex_destroy(gLogMutexp); + gLogMutexp = NULL; + } + if (gCallStacksLogMutexp) + { + // Clean up the logging mutex + + // All other threads NEED to be done before we clean up APR, so this is okay. + apr_thread_mutex_destroy(gCallStacksLogMutexp); + gCallStacksLogMutexp = NULL; + } + + // Must destroy ALL, and therefore this last LLAPRRootPool, before terminating APR. + static_cast<LLAPRRootPool*>(this)->destroy(); + + apr_terminate(); + } +} + +//static +// Return a global root pool that is independent of LLThreadLocalData. +// Normally you should NOT use this. Only use for early initialization +// (before main) and deinitialization (after main). +LLAPRRootPool& LLAPRRootPool::get(void) +{ + static LLAPRRootPool global_APRpool(0); + return global_APRpool; +} + +void LLVolatileAPRPool::clearVolatileAPRPool() +{ + llassert_always(mNumActiveRef > 0); + if (--mNumActiveRef == 0) + { + if (isOld()) + { + destroy(); + mNumTotalRef = 0 ; + } + else + { + // This does not actually free the memory, + // it just allows the pool to re-use this memory for the next allocation. + clear(); + } + } + + // Paranoia check if the pool is jammed. + llassert(mNumTotalRef < (FULL_VOLATILE_APR_POOL << 2)) ; +} diff --git a/indra/llcommon/llaprpool.h b/indra/llcommon/llaprpool.h new file mode 100644 index 0000000000..bf4102c584 --- /dev/null +++ b/indra/llcommon/llaprpool.h @@ -0,0 +1,256 @@ +/** + * @file llaprpool.h + * @brief Implementation of LLAPRPool + * + * $LicenseInfo:firstyear=2011&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2011, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + * + * CHANGELOG + * and additional copyright holders. + * + * 04/04/2010 + * - Initial version, written by Aleric Inglewood @ SL + * + * 10/11/2010 + * - Added APR_HAS_THREADS #if's to allow creation and destruction + * of subpools by threads other than the parent pool owner. + * + * 05/02/2011 + * - Fixed compilation on windows: Suppress compile warning 4996 + * and include <winsock2.h> before including <ws2tcpip.h>, + * by Merov Linden @ SL. + */ + +#ifndef LL_LLAPRPOOL_H +#define LL_LLAPRPOOL_H + +#ifdef LL_WINDOWS +#pragma warning(push) +#pragma warning(disable:4996) +#include <winsock2.h> +#include <ws2tcpip.h> // Needed before including apr_portable.h +#pragma warning(pop) +#endif + +#include "apr_portable.h" +#include "apr_pools.h" +#include "llerror.h" + +extern void ll_init_apr(); + +/** + * @brief A wrapper around the APR memory pool API. + * + * Usage of this class should be restricted to passing it to libapr-1 function calls that need it. + * + */ +class LL_COMMON_API LLAPRPool +{ +protected: + //! Pointer to the underlaying pool. NULL if not initialized. + apr_pool_t* mPool; // The use of apr_pool_t is OK here. + // This is the wrapped pointer that it is all about! + //! Pointer to the parent pool, if any. Only valid when mPool is non-zero. + LLAPRPool* mParent; + //! The thread that owns this memory pool. Only valid when mPool is non-zero. + apr_os_thread_t mOwner; + +public: + /// Construct an uninitialized (destructed) pool. + LLAPRPool(void) : mPool(NULL) { } + + /// Construct a subpool from an existing pool. + /// This is not a copy-constructor, this class doesn't have one! + LLAPRPool(LLAPRPool& parent) : mPool(NULL) { create(parent); } + + /// Destruct the memory pool (free all of its subpools and allocated memory). + ~LLAPRPool() { destroy(); } + +protected: + /// Create a pool that is allocated from the Operating System. Only used by LLAPRRootPool. + LLAPRPool(int) : mPool(NULL), mParent(NULL), mOwner(apr_os_thread_current()) + { + apr_status_t const apr_pool_create_status = apr_pool_create(&mPool, NULL); + llassert_always(apr_pool_create_status == APR_SUCCESS); + llassert(mPool); + apr_pool_cleanup_register(mPool, this, &s_plain_cleanup, &apr_pool_cleanup_null); + } + +public: + /// Create a subpool from parent. May only be called for an uninitialized/destroyed pool. + /// The default parameter causes the root pool of the current thread to be used. + void create(LLAPRPool& parent = *static_cast<LLAPRPool*>(NULL)); + + /// Destroy the (sub)pool, if any. + void destroy(void); + + // Use some safebool idiom (http://www.artima.com/cppsource/safebool.html) rather than operator bool. + typedef LLAPRPool* const LLAPRPool::* const bool_type; + /// Return true if the pool is initialized. + operator bool_type() const { return mPool ? &LLAPRPool::mParent : 0; } + + /// Painful, but we have to either provide access to this, or wrap + /// every APR function call that needs an apr pool as argument. + /// NEVER destroy a pool that is returned by this function! + apr_pool_t* operator()(void) const // The use of apr_pool_t is OK here. + // This is the accessor for passing the pool to libapr-1 functions. + { + llassert(mPool); + llassert(apr_os_thread_equal(mOwner, apr_os_thread_current())); + return mPool; + } + + /// Free all memory without destructing the pool. + void clear(void) + { + llassert(mPool); + llassert(apr_os_thread_equal(mOwner, apr_os_thread_current())); + apr_pool_clear(mPool); + } + +// These methods would make this class 'complete' (as wrapper around the libapr +// pool functions), but we don't use memory pools in the viewer (only when +// we are forced to pass one to a libapr call), so don't define them in order +// not to encourage people to use them. +#if 0 + void* palloc(size_t size) + { + llassert(mPool); + llassert(apr_os_thread_equal(mOwner, apr_os_thread_current())); + return apr_palloc(mPool, size); + } + void* pcalloc(size_t size) + { + llassert(mPool); + llassert(apr_os_thread_equal(mOwner, apr_os_thread_current())); + return apr_pcalloc(mPool, size); + } +#endif + +private: + bool parent_is_being_destructed(void); + static apr_status_t s_plain_cleanup(void* userdata) { return static_cast<LLAPRPool*>(userdata)->plain_cleanup(); } + + apr_status_t plain_cleanup(void) + { + if (mPool && // We are not being destructed, + parent_is_being_destructed()) // but our parent is. + // This means the pool is being destructed recursively by libapr + // because one of its parents is being destructed. + { + mPool = NULL; // Stop destroy() from destructing the pool again. + } + return APR_SUCCESS; + } +}; + +class LLAPRInitialization +{ +public: + LLAPRInitialization(void); +}; + +/** + * @brief Root memory pool (allocates memory from the operating system). + * + * This class should only be used by LLThreadLocalData + * (and LLMutexRootPool when APR_HAS_THREADS isn't defined). + */ +class LL_COMMON_API LLAPRRootPool : public LLAPRInitialization, public LLAPRPool +{ +private: + /// Construct a root memory pool. Should only be used by LLThreadLocalData and LLMutexRootPool. + friend class LLThreadLocalData; +#if !APR_HAS_THREADS + friend class LLMutexRootPool; +#endif + /// Construct a root memory pool. + /// Should only be used by LLThreadLocalData. + LLAPRRootPool(void); + ~LLAPRRootPool(); + +private: + // Keep track of how many root pools exist and when the last one is destructed. + static bool sCountInitialized; + static apr_uint32_t volatile sCount; + +public: + // Return a global root pool that is independent of LLThreadLocalData. + // Normally you should not use this. Only use for early initialization + // (before main) and deinitialization (after main). + static LLAPRRootPool& get(void); + +#if APR_POOL_DEBUG + void grab_ownership(void) + { + // You need a patched libapr to use this. + // See http://web.archiveorange.com/archive/v/5XO9y2zoxUOMt6Gmi1OI + apr_pool_owner_set(mPool); + } +#endif + +private: + // Used for constructing the Special Global Root Pool (returned by LLAPRRootPool::get). + // It is the same as the default constructor but omits to increment sCount. As a result, + // we must be sure that at least one other LLAPRRootPool is created before termination + // of the application (which is the case: we create one LLAPRRootPool per thread). + LLAPRRootPool(int) : LLAPRInitialization(), LLAPRPool(0) { } +}; + +/** Volatile memory pool + * + * 'Volatile' APR memory pool which normally only clears memory, + * and does not destroy the pool (the same pool is reused) for + * greater efficiency. However, as a safe guard the apr pool + * is destructed every FULL_VOLATILE_APR_POOL uses to allow + * the system memory to be allocated more efficiently and not + * get scattered through RAM. + */ +class LL_COMMON_API LLVolatileAPRPool : protected LLAPRPool +{ +public: + LLVolatileAPRPool(void) : mNumActiveRef(0), mNumTotalRef(0) { } + + void clearVolatileAPRPool(void); + + bool isOld(void) const { return mNumTotalRef > FULL_VOLATILE_APR_POOL; } + bool isUnused() const { return mNumActiveRef == 0; } + +private: + friend class LLScopedVolatileAPRPool; + friend class LLAPRFile; + apr_pool_t* getVolatileAPRPool(void) // The use of apr_pool_t is OK here. + { + if (!mPool) create(); + ++mNumActiveRef; + ++mNumTotalRef; + return LLAPRPool::operator()(); + } + +private: + S32 mNumActiveRef; // Number of active uses of the pool. + S32 mNumTotalRef; // Number of total uses of the pool since last creation. + + // Maximum number of references to LLVolatileAPRPool until the pool is recreated. + static S32 const FULL_VOLATILE_APR_POOL = 1024; +}; + +#endif // LL_LLAPRPOOL_H diff --git a/indra/llcommon/llcommon.cpp b/indra/llcommon/llcommon.cpp index 8be9e4f4de..b8a7394852 100644 --- a/indra/llcommon/llcommon.cpp +++ b/indra/llcommon/llcommon.cpp @@ -31,17 +31,9 @@ #include "llthread.h" //static -BOOL LLCommon::sAprInitialized = FALSE; - -//static void LLCommon::initClass() { LLMemory::initClass(); - if (!sAprInitialized) - { - ll_init_apr(); - sAprInitialized = TRUE; - } LLTimer::initClass(); LLThreadSafeRefCount::initThreadSafeRefCount(); // LLWorkerThread::initClass(); @@ -55,10 +47,5 @@ void LLCommon::cleanupClass() // LLWorkerThread::cleanupClass(); LLThreadSafeRefCount::cleanupThreadSafeRefCount(); LLTimer::cleanupClass(); - if (sAprInitialized) - { - ll_cleanup_apr(); - sAprInitialized = FALSE; - } LLMemory::cleanupClass(); } diff --git a/indra/llcommon/llcommon.h b/indra/llcommon/llcommon.h index ca9cad5d05..171590f3d8 100644 --- a/indra/llcommon/llcommon.h +++ b/indra/llcommon/llcommon.h @@ -35,8 +35,6 @@ class LL_COMMON_API LLCommon public: static void initClass(); static void cleanupClass(); -private: - static BOOL sAprInitialized; }; #endif diff --git a/indra/llcommon/llerror.cpp b/indra/llcommon/llerror.cpp index c35799bbb9..bda9d7c177 100644 --- a/indra/llcommon/llerror.cpp +++ b/indra/llcommon/llerror.cpp @@ -866,6 +866,9 @@ You get: */ +extern apr_thread_mutex_t* gLogMutexp; +extern apr_thread_mutex_t* gCallStacksLogMutexp; + namespace { bool checkLevelMap(const LevelMap& map, const std::string& key, LLError::ELevel& level) diff --git a/indra/llcommon/llerror.h b/indra/llcommon/llerror.h index b3e604f8e8..369f2a7a97 100644 --- a/indra/llcommon/llerror.h +++ b/indra/llcommon/llerror.h @@ -296,5 +296,4 @@ typedef LLError::NoClassInfo _LL_CLASS_TO_LOG; Such computation is done iff the message will be logged. */ - #endif // LL_LLERROR_H diff --git a/indra/llcommon/llfixedbuffer.cpp b/indra/llcommon/llfixedbuffer.cpp index d394f179fb..4b5cdbe288 100644 --- a/indra/llcommon/llfixedbuffer.cpp +++ b/indra/llcommon/llfixedbuffer.cpp @@ -30,8 +30,7 @@ LLFixedBuffer::LLFixedBuffer(const U32 max_lines) : LLLineBuffer(), - mMaxLines(max_lines), - mMutex(NULL) + mMaxLines(max_lines) { mTimer.reset(); } diff --git a/indra/llcommon/llmemory.cpp b/indra/llcommon/llmemory.cpp index 21d1c84d69..0d36009fc4 100644 --- a/indra/llcommon/llmemory.cpp +++ b/indra/llcommon/llmemory.cpp @@ -26,14 +26,13 @@ #include "linden_common.h" -#include "llmemory.h" -#if MEM_TRACK_MEM +//#if MEM_TRACK_MEM #include "llthread.h" -#endif +//#endif #if defined(LL_WINDOWS) -# include <windows.h> +//# include <windows.h> # include <psapi.h> #elif defined(LL_DARWIN) # include <sys/types.h> @@ -43,10 +42,24 @@ # include <unistd.h> #endif +#include "llmemory.h" + +#include "llsys.h" +#include "llframetimer.h" //---------------------------------------------------------------------------- //static char* LLMemory::reserveMem = 0; +U32 LLMemory::sAvailPhysicalMemInKB = U32_MAX ; +U32 LLMemory::sMaxPhysicalMemInKB = 0; +U32 LLMemory::sAllocatedMemInKB = 0; +U32 LLMemory::sAllocatedPageSizeInKB = 0 ; +U32 LLMemory::sMaxHeapSizeInKB = U32_MAX ; +BOOL LLMemory::sEnableMemoryFailurePrevention = FALSE; + +#if __DEBUG_PRIVATE_MEM__ +LLPrivateMemoryPoolManager::mem_allocation_info_t LLPrivateMemoryPoolManager::sMemAllocationTracker; +#endif //static void LLMemory::initClass() @@ -71,6 +84,148 @@ void LLMemory::freeReserve() reserveMem = NULL; } +//static +void LLMemory::initMaxHeapSizeGB(F32 max_heap_size_gb, BOOL prevent_heap_failure) +{ + sMaxHeapSizeInKB = (U32)(max_heap_size_gb * 1024 * 1024) ; + sEnableMemoryFailurePrevention = prevent_heap_failure ; +} + +//static +void LLMemory::updateMemoryInfo() +{ +#if LL_WINDOWS + HANDLE self = GetCurrentProcess(); + PROCESS_MEMORY_COUNTERS counters; + + if (!GetProcessMemoryInfo(self, &counters, sizeof(counters))) + { + llwarns << "GetProcessMemoryInfo failed" << llendl; + return ; + } + + sAllocatedMemInKB = (U32)(counters.WorkingSetSize / 1024) ; + sAllocatedPageSizeInKB = (U32)(counters.PagefileUsage / 1024) ; + + U32 avail_phys, avail_virtual; + LLMemoryInfo::getAvailableMemoryKB(avail_phys, avail_virtual) ; + sMaxPhysicalMemInKB = llmin(avail_phys + sAllocatedMemInKB, sMaxHeapSizeInKB); + + if(sMaxPhysicalMemInKB > sAllocatedMemInKB) + { + sAvailPhysicalMemInKB = sMaxPhysicalMemInKB - sAllocatedMemInKB ; + } + else + { + sAvailPhysicalMemInKB = 0 ; + } +#else + //not valid for other systems for now. + sAllocatedMemInKB = (U32)(LLMemory::getCurrentRSS() / 1024) ; + sMaxPhysicalMemInKB = U32_MAX ; + sAvailPhysicalMemInKB = U32_MAX ; +#endif + + return ; +} + +// +//this function is to test if there is enough space with the size in the virtual address space. +//it does not do any real allocation +//if success, it returns the address where the memory chunk can fit in; +//otherwise it returns NULL. +// +//static +void* LLMemory::tryToAlloc(void* address, U32 size) +{ +#if LL_WINDOWS + address = VirtualAlloc(address, size, MEM_RESERVE | MEM_TOP_DOWN, PAGE_NOACCESS) ; + if(address) + { + if(!VirtualFree(address, 0, MEM_RELEASE)) + { + llerrs << "error happens when free some memory reservation." << llendl ; + } + } + return address ; +#else + return (void*)0x01 ; //skip checking +#endif +} + +//static +void LLMemory::logMemoryInfo(BOOL update) +{ + if(update) + { + updateMemoryInfo() ; + } + + llinfos << "Current allocated physical memory(KB): " << sAllocatedMemInKB << llendl ; + llinfos << "Current allocated page size (KB): " << sAllocatedPageSizeInKB << llendl ; + llinfos << "Current availabe physical memory(KB): " << sAvailPhysicalMemInKB << llendl ; + llinfos << "Current max usable memory(KB): " << sMaxPhysicalMemInKB << llendl ; +} + +//return 0: everything is normal; +//return 1: the memory pool is low, but not in danger; +//return -1: the memory pool is in danger, is about to crash. +//static +S32 LLMemory::isMemoryPoolLow() +{ + static const U32 LOW_MEMEOY_POOL_THRESHOLD_KB = 64 * 1024 ; //64 MB for emergency use + + if(!sEnableMemoryFailurePrevention) + { + return 0 ; //no memory failure prevention. + } + + if(sAvailPhysicalMemInKB < (LOW_MEMEOY_POOL_THRESHOLD_KB >> 2)) //out of physical memory + { + return -1 ; + } + + if(sAllocatedPageSizeInKB + (LOW_MEMEOY_POOL_THRESHOLD_KB >> 2) > sMaxHeapSizeInKB) //out of virtual address space. + { + return -1 ; + } + + return (S32)(sAvailPhysicalMemInKB < LOW_MEMEOY_POOL_THRESHOLD_KB || + sAllocatedPageSizeInKB + LOW_MEMEOY_POOL_THRESHOLD_KB > sMaxHeapSizeInKB) ; +} + +//static +U32 LLMemory::getAvailableMemKB() +{ + return sAvailPhysicalMemInKB ; +} + +//static +U32 LLMemory::getMaxMemKB() +{ + return sMaxPhysicalMemInKB ; +} + +//static +U32 LLMemory::getAllocatedMemKB() +{ + return sAllocatedMemInKB ; +} + +void* ll_allocate (size_t size) +{ + if (size == 0) + { + llwarns << "Null allocation" << llendl; + } + void *p = malloc(size); + if (p == NULL) + { + LLMemory::freeReserve(); + llerrs << "Out of memory Error" << llendl; + } + return p; +} //---------------------------------------------------------------------------- @@ -237,7 +392,7 @@ U64 LLMemory::getCurrentRSS() U32 LLMemory::getWorkingSetSize() { - return 0 ; + return 0; } #endif @@ -258,7 +413,7 @@ LLMemTracker::LLMemTracker() mDrawnIndex = 0 ; mPaused = FALSE ; - mMutexp = new LLMutex(NULL) ; + mMutexp = new LLMutex() ; mStringBuffer = new char*[128] ; mStringBuffer[0] = new char[mCapacity * 128] ; for(S32 i = 1 ; i < mCapacity ; i++) @@ -376,3 +531,1672 @@ const char* LLMemTracker::getNextLine() #endif //MEM_TRACK_MEM //-------------------------------------------------------------------------------------------------- + +//-------------------------------------------------------------------------------------------------- +//-------------------------------------------------------------------------------------------------- +//minimum slot size and minimal slot size interval +const U32 ATOMIC_MEM_SLOT = 16 ; //bytes + +//minimum block sizes (page size) for small allocation, medium allocation, large allocation +const U32 MIN_BLOCK_SIZES[LLPrivateMemoryPool::SUPER_ALLOCATION] = {2 << 10, 4 << 10, 16 << 10} ; // + +//maximum block sizes for small allocation, medium allocation, large allocation +const U32 MAX_BLOCK_SIZES[LLPrivateMemoryPool::SUPER_ALLOCATION] = {64 << 10, 1 << 20, 4 << 20} ; + +//minimum slot sizes for small allocation, medium allocation, large allocation +const U32 MIN_SLOT_SIZES[LLPrivateMemoryPool::SUPER_ALLOCATION] = {ATOMIC_MEM_SLOT, 2 << 10, 512 << 10}; + +//maximum slot sizes for small allocation, medium allocation, large allocation +const U32 MAX_SLOT_SIZES[LLPrivateMemoryPool::SUPER_ALLOCATION] = {(2 << 10) - ATOMIC_MEM_SLOT, (512 - 2) << 10, 4 << 20}; + +//size of a block with multiple slots can not exceed CUT_OFF_SIZE +const U32 CUT_OFF_SIZE = (64 << 10) ; //64 KB + +//max number of slots in a block +const U32 MAX_NUM_SLOTS_IN_A_BLOCK = llmin(MIN_BLOCK_SIZES[0] / ATOMIC_MEM_SLOT, ATOMIC_MEM_SLOT * 8) ; + +//------------------------------------------------------------- +//align val to be integer times of ATOMIC_MEM_SLOT +U32 align(U32 val) +{ + U32 aligned = (val / ATOMIC_MEM_SLOT) * ATOMIC_MEM_SLOT ; + if(aligned < val) + { + aligned += ATOMIC_MEM_SLOT ; + } + + return aligned ; +} + +//------------------------------------------------------------- +//class LLPrivateMemoryPool::LLMemoryBlock +//------------------------------------------------------------- +// +//each memory block could fit for two page sizes: 0.75 * mSlotSize, which starts from the beginning of the memory chunk and grow towards the end of the +//the block; another is mSlotSize, which starts from the end of the block and grows towards the beginning of the block. +// +LLPrivateMemoryPool::LLMemoryBlock::LLMemoryBlock() +{ + //empty +} + +LLPrivateMemoryPool::LLMemoryBlock::~LLMemoryBlock() +{ + //empty +} + +//create and initialize a memory block +void LLPrivateMemoryPool::LLMemoryBlock::init(char* buffer, U32 buffer_size, U32 slot_size) +{ + mBuffer = buffer ; + mBufferSize = buffer_size ; + mSlotSize = slot_size ; + mTotalSlots = buffer_size / mSlotSize ; + + llassert_always(buffer_size / mSlotSize <= MAX_NUM_SLOTS_IN_A_BLOCK) ; //max number is 128 + + mAllocatedSlots = 0 ; + mDummySize = 0 ; + + //init the bit map. + //mark free bits + if(mTotalSlots > 32) //reserve extra space from mBuffer to store bitmap if needed. + { + mDummySize = ATOMIC_MEM_SLOT ; + mTotalSlots -= (mDummySize + mSlotSize - 1) / mSlotSize ; + mUsageBits = 0 ; + + S32 usage_bit_len = (mTotalSlots + 31) / 32 ; + + for(S32 i = 0 ; i < usage_bit_len - 1 ; i++) + { + *((U32*)mBuffer + i) = 0 ; + } + for(S32 i = usage_bit_len - 1 ; i < mDummySize / sizeof(U32) ; i++) + { + *((U32*)mBuffer + i) = 0xffffffff ; + } + + if(mTotalSlots & 31) + { + *((U32*)mBuffer + usage_bit_len - 2) = (0xffffffff << (mTotalSlots & 31)) ; + } + } + else//no extra bitmap space reserved + { + mUsageBits = 0 ; + if(mTotalSlots & 31) + { + mUsageBits = (0xffffffff << (mTotalSlots & 31)) ; + } + } + + mSelf = this ; + mNext = NULL ; + mPrev = NULL ; + + llassert_always(mTotalSlots > 0) ; +} + +//mark this block to be free with the memory [mBuffer, mBuffer + mBufferSize). +void LLPrivateMemoryPool::LLMemoryBlock::setBuffer(char* buffer, U32 buffer_size) +{ + mBuffer = buffer ; + mBufferSize = buffer_size ; + mSelf = NULL ; + mTotalSlots = 0 ; //set the block is free. +} + +//reserve a slot +char* LLPrivateMemoryPool::LLMemoryBlock::allocate() +{ + llassert_always(mAllocatedSlots < mTotalSlots) ; + + //find a free slot + U32* bits = NULL ; + U32 k = 0 ; + if(mUsageBits != 0xffffffff) + { + bits = &mUsageBits ; + } + else if(mDummySize > 0)//go to extra space + { + for(S32 i = 0 ; i < mDummySize / sizeof(U32); i++) + { + if(*((U32*)mBuffer + i) != 0xffffffff) + { + bits = (U32*)mBuffer + i ; + k = i + 1 ; + break ; + } + } + } + S32 idx = 0 ; + U32 tmp = *bits ; + for(; tmp & 1 ; tmp >>= 1, idx++) ; + + //set the slot reserved + if(!idx) + { + *bits |= 1 ; + } + else + { + *bits |= (1 << idx) ; + } + + mAllocatedSlots++ ; + + return mBuffer + mDummySize + (k * 32 + idx) * mSlotSize ; +} + +//free a slot +void LLPrivateMemoryPool::LLMemoryBlock::freeMem(void* addr) +{ + //bit index + U32 idx = ((U32)addr - (U32)mBuffer - mDummySize) / mSlotSize ; + + U32* bits = &mUsageBits ; + if(idx >= 32) + { + bits = (U32*)mBuffer + (idx - 32) / 32 ; + } + + //reset the bit + if(idx & 31) + { + *bits &= ~(1 << (idx & 31)) ; + } + else + { + *bits &= ~1 ; + } + + mAllocatedSlots-- ; +} + +//for debug use: reset the entire bitmap. +void LLPrivateMemoryPool::LLMemoryBlock::resetBitMap() +{ + for(S32 i = 0 ; i < mDummySize / sizeof(U32) ; i++) + { + *((U32*)mBuffer + i) = 0 ; + } + mUsageBits = 0 ; +} +//------------------------------------------------------------------- +//class LLMemoryChunk +//-------------------------------------------------------------------- +LLPrivateMemoryPool::LLMemoryChunk::LLMemoryChunk() +{ + //empty +} + +LLPrivateMemoryPool::LLMemoryChunk::~LLMemoryChunk() +{ + //empty +} + +//create and init a memory chunk +void LLPrivateMemoryPool::LLMemoryChunk::init(char* buffer, U32 buffer_size, U32 min_slot_size, U32 max_slot_size, U32 min_block_size, U32 max_block_size) +{ + mBuffer = buffer ; + mBufferSize = buffer_size ; + mAlloatedSize = 0 ; + + mMetaBuffer = mBuffer + sizeof(LLMemoryChunk) ; + + mMinBlockSize = min_block_size; //page size + mMinSlotSize = min_slot_size; + mMaxSlotSize = max_slot_size ; + mBlockLevels = mMaxSlotSize / mMinSlotSize ; + mPartitionLevels = max_block_size / mMinBlockSize + 1 ; + + S32 max_num_blocks = (buffer_size - sizeof(LLMemoryChunk) - mBlockLevels * sizeof(LLMemoryBlock*) - mPartitionLevels * sizeof(LLMemoryBlock*)) / + (mMinBlockSize + sizeof(LLMemoryBlock)) ; + //meta data space + mBlocks = (LLMemoryBlock*)mMetaBuffer ; //space reserved for all memory blocks. + mAvailBlockList = (LLMemoryBlock**)((char*)mBlocks + sizeof(LLMemoryBlock) * max_num_blocks) ; + mFreeSpaceList = (LLMemoryBlock**)((char*)mAvailBlockList + sizeof(LLMemoryBlock*) * mBlockLevels) ; + + //data buffer, which can be used for allocation + mDataBuffer = (char*)mFreeSpaceList + sizeof(LLMemoryBlock*) * mPartitionLevels ; + + //alignmnet + mDataBuffer = mBuffer + align(mDataBuffer - mBuffer) ; + + //init + for(U32 i = 0 ; i < mBlockLevels; i++) + { + mAvailBlockList[i] = NULL ; + } + for(U32 i = 0 ; i < mPartitionLevels ; i++) + { + mFreeSpaceList[i] = NULL ; + } + + //assign the entire chunk to the first block + mBlocks[0].mPrev = NULL ; + mBlocks[0].mNext = NULL ; + mBlocks[0].setBuffer(mDataBuffer, buffer_size - (mDataBuffer - mBuffer)) ; + addToFreeSpace(&mBlocks[0]) ; + + mHashNext = NULL ; + mNext = NULL ; + mPrev = NULL ; +} + +//static +U32 LLPrivateMemoryPool::LLMemoryChunk::getMaxOverhead(U32 data_buffer_size, U32 min_slot_size, + U32 max_slot_size, U32 min_block_size, U32 max_block_size) +{ + //for large allocations, reserve some extra memory for meta data to avoid wasting much + if(data_buffer_size / min_slot_size < 64) //large allocations + { + U32 overhead = sizeof(LLMemoryChunk) + (data_buffer_size / min_block_size) * sizeof(LLMemoryBlock) + + sizeof(LLMemoryBlock*) * (max_slot_size / min_slot_size) + sizeof(LLMemoryBlock*) * (max_block_size / min_block_size + 1) ; + + //round to integer times of min_block_size + overhead = ((overhead + min_block_size - 1) / min_block_size) * min_block_size ; + return overhead ; + } + else + { + return 0 ; //do not reserve extra overhead if for small allocations + } +} + +char* LLPrivateMemoryPool::LLMemoryChunk::allocate(U32 size) +{ + if(mMinSlotSize > size) + { + size = mMinSlotSize ; + } + if(mAlloatedSize + size > mBufferSize - (mDataBuffer - mBuffer)) + { + return NULL ; //no enough space in this chunk. + } + + char* p = NULL ; + U32 blk_idx = getBlockLevel(size); + + LLMemoryBlock* blk = NULL ; + + //check if there is free block available + if(mAvailBlockList[blk_idx]) + { + blk = mAvailBlockList[blk_idx] ; + p = blk->allocate() ; + + if(blk->isFull()) + { + popAvailBlockList(blk_idx) ; + } + } + + //ask for a new block + if(!p) + { + blk = addBlock(blk_idx) ; + if(blk) + { + p = blk->allocate() ; + + if(blk->isFull()) + { + popAvailBlockList(blk_idx) ; + } + } + } + + //ask for space from larger blocks + if(!p) + { + for(S32 i = blk_idx + 1 ; i < mBlockLevels; i++) + { + if(mAvailBlockList[i]) + { + blk = mAvailBlockList[i] ; + p = blk->allocate() ; + + if(blk->isFull()) + { + popAvailBlockList(i) ; + } + break ; + } + } + } + + if(p && blk) + { + mAlloatedSize += blk->getSlotSize() ; + } + return p ; +} + +void LLPrivateMemoryPool::LLMemoryChunk::freeMem(void* addr) +{ + U32 blk_idx = getPageIndex((U32)addr) ; + LLMemoryBlock* blk = (LLMemoryBlock*)(mMetaBuffer + blk_idx * sizeof(LLMemoryBlock)) ; + blk = blk->mSelf ; + + bool was_full = blk->isFull() ; + blk->freeMem(addr) ; + mAlloatedSize -= blk->getSlotSize() ; + + if(blk->empty()) + { + removeBlock(blk) ; + } + else if(was_full) + { + addToAvailBlockList(blk) ; + } +} + +bool LLPrivateMemoryPool::LLMemoryChunk::empty() +{ + return !mAlloatedSize ; +} + +bool LLPrivateMemoryPool::LLMemoryChunk::containsAddress(const char* addr) const +{ + return (U32)mBuffer <= (U32)addr && (U32)mBuffer + mBufferSize > (U32)addr ; +} + +//debug use +void LLPrivateMemoryPool::LLMemoryChunk::dump() +{ +#if 0 + //sanity check + //for(S32 i = 0 ; i < mBlockLevels ; i++) + //{ + // LLMemoryBlock* blk = mAvailBlockList[i] ; + // while(blk) + // { + // blk_list.push_back(blk) ; + // blk = blk->mNext ; + // } + //} + for(S32 i = 0 ; i < mPartitionLevels ; i++) + { + LLMemoryBlock* blk = mFreeSpaceList[i] ; + while(blk) + { + blk_list.push_back(blk) ; + blk = blk->mNext ; + } + } + + std::sort(blk_list.begin(), blk_list.end(), LLMemoryBlock::CompareAddress()); + + U32 total_size = blk_list[0]->getBufferSize() ; + for(U32 i = 1 ; i < blk_list.size(); i++) + { + total_size += blk_list[i]->getBufferSize() ; + if((U32)blk_list[i]->getBuffer() < (U32)blk_list[i-1]->getBuffer() + blk_list[i-1]->getBufferSize()) + { + llerrs << "buffer corrupted." << llendl ; + } + } + + llassert_always(total_size + mMinBlockSize >= mBufferSize - ((U32)mDataBuffer - (U32)mBuffer)) ; + + U32 blk_num = (mBufferSize - (mDataBuffer - mBuffer)) / mMinBlockSize ; + for(U32 i = 0 ; i < blk_num ; ) + { + LLMemoryBlock* blk = &mBlocks[i] ; + if(blk->mSelf) + { + U32 end = blk->getBufferSize() / mMinBlockSize ; + for(U32 j = 0 ; j < end ; j++) + { + llassert_always(blk->mSelf == blk || !blk->mSelf) ; + } + i += end ; + } + else + { + llerrs << "gap happens" << llendl ; + } + } +#endif +#if 0 + llinfos << "---------------------------" << llendl ; + llinfos << "Chunk buffer: " << (U32)getBuffer() << " size: " << getBufferSize() << llendl ; + + llinfos << "available blocks ... " << llendl ; + for(S32 i = 0 ; i < mBlockLevels ; i++) + { + LLMemoryBlock* blk = mAvailBlockList[i] ; + while(blk) + { + llinfos << "blk buffer " << (U32)blk->getBuffer() << " size: " << blk->getBufferSize() << llendl ; + blk = blk->mNext ; + } + } + + llinfos << "free blocks ... " << llendl ; + for(S32 i = 0 ; i < mPartitionLevels ; i++) + { + LLMemoryBlock* blk = mFreeSpaceList[i] ; + while(blk) + { + llinfos << "blk buffer " << (U32)blk->getBuffer() << " size: " << blk->getBufferSize() << llendl ; + blk = blk->mNext ; + } + } +#endif +} + +//compute the size for a block, the size is round to integer times of mMinBlockSize. +U32 LLPrivateMemoryPool::LLMemoryChunk::calcBlockSize(U32 slot_size) +{ + // + //Note: we try to make a block to have 32 slots if the size is not over 32 pages + //32 is the number of bits of an integer in a 32-bit system + // + + U32 block_size; + U32 cut_off_size = llmin(CUT_OFF_SIZE, (U32)(mMinBlockSize << 5)) ; + + if((slot_size << 5) <= mMinBlockSize)//for small allocations, return one page + { + block_size = mMinBlockSize ; + } + else if(slot_size >= cut_off_size)//for large allocations, return one-slot block + { + block_size = (slot_size / mMinBlockSize) * mMinBlockSize ; + if(block_size < slot_size) + { + block_size += mMinBlockSize ; + } + } + else //medium allocations + { + if((slot_size << 5) >= cut_off_size) + { + block_size = cut_off_size ; + } + else + { + block_size = ((slot_size << 5) / mMinBlockSize) * mMinBlockSize ; + } + } + + llassert_always(block_size >= slot_size) ; + + return block_size ; +} + +//create a new block in the chunk +LLPrivateMemoryPool::LLMemoryBlock* LLPrivateMemoryPool::LLMemoryChunk::addBlock(U32 blk_idx) +{ + U32 slot_size = mMinSlotSize * (blk_idx + 1) ; + U32 preferred_block_size = calcBlockSize(slot_size) ; + U16 idx = getPageLevel(preferred_block_size); + LLMemoryBlock* blk = NULL ; + + if(mFreeSpaceList[idx])//if there is free slot for blk_idx + { + blk = createNewBlock(mFreeSpaceList[idx], preferred_block_size, slot_size, blk_idx) ; + } + else if(mFreeSpaceList[mPartitionLevels - 1]) //search free pool + { + blk = createNewBlock(mFreeSpaceList[mPartitionLevels - 1], preferred_block_size, slot_size, blk_idx) ; + } + else //search for other non-preferred but enough space slot. + { + S32 min_idx = 0 ; + if(slot_size > mMinBlockSize) + { + min_idx = getPageLevel(slot_size) ; + } + for(S32 i = (S32)idx - 1 ; i >= min_idx ; i--) //search the small slots first + { + if(mFreeSpaceList[i]) + { + U32 new_preferred_block_size = mFreeSpaceList[i]->getBufferSize(); + new_preferred_block_size = (new_preferred_block_size / mMinBlockSize) * mMinBlockSize ; //round to integer times of mMinBlockSize. + + //create a NEW BLOCK THERE. + if(new_preferred_block_size >= slot_size) //at least there is space for one slot. + { + + blk = createNewBlock(mFreeSpaceList[i], new_preferred_block_size, slot_size, blk_idx) ; + } + break ; + } + } + + if(!blk) + { + for(U16 i = idx + 1 ; i < mPartitionLevels - 1; i++) //search the large slots + { + if(mFreeSpaceList[i]) + { + //create a NEW BLOCK THERE. + blk = createNewBlock(mFreeSpaceList[i], preferred_block_size, slot_size, blk_idx) ; + break ; + } + } + } + } + + return blk ; +} + +//create a new block at the designed location +LLPrivateMemoryPool::LLMemoryBlock* LLPrivateMemoryPool::LLMemoryChunk::createNewBlock(LLMemoryBlock* blk, U32 buffer_size, U32 slot_size, U32 blk_idx) +{ + //unlink from the free space + removeFromFreeSpace(blk) ; + + //check the rest space + U32 new_free_blk_size = blk->getBufferSize() - buffer_size ; + if(new_free_blk_size < mMinBlockSize) //can not partition the memory into size smaller than mMinBlockSize + { + new_free_blk_size = 0 ; //discard the last small extra space. + } + + //add the rest space back to the free list + if(new_free_blk_size > 0) //blk still has free space + { + LLMemoryBlock* next_blk = blk + (buffer_size / mMinBlockSize) ; + next_blk->mPrev = NULL ; + next_blk->mNext = NULL ; + next_blk->setBuffer(blk->getBuffer() + buffer_size, new_free_blk_size) ; + addToFreeSpace(next_blk) ; + } + + blk->init(blk->getBuffer(), buffer_size, slot_size) ; + //insert to the available block list... + mAvailBlockList[blk_idx] = blk ; + + //mark the address map: all blocks covered by this block space pointing back to this block. + U32 end = (buffer_size / mMinBlockSize) ; + for(U32 i = 1 ; i < end ; i++) + { + (blk + i)->mSelf = blk ; + } + + return blk ; +} + +//delete a block, release the block to the free pool. +void LLPrivateMemoryPool::LLMemoryChunk::removeBlock(LLMemoryBlock* blk) +{ + //remove from the available block list + if(blk->mPrev) + { + blk->mPrev->mNext = blk->mNext ; + } + if(blk->mNext) + { + blk->mNext->mPrev = blk->mPrev ; + } + U32 blk_idx = getBlockLevel(blk->getSlotSize()); + if(mAvailBlockList[blk_idx] == blk) + { + mAvailBlockList[blk_idx] = blk->mNext ; + } + + blk->mNext = NULL ; + blk->mPrev = NULL ; + + //mark it free + blk->setBuffer(blk->getBuffer(), blk->getBufferSize()) ; + +#if 1 + //merge blk with neighbors if possible + if(blk->getBuffer() > mDataBuffer) //has the left neighbor + { + if((blk - 1)->mSelf->isFree()) + { + LLMemoryBlock* left_blk = (blk - 1)->mSelf ; + removeFromFreeSpace((blk - 1)->mSelf); + left_blk->setBuffer(left_blk->getBuffer(), left_blk->getBufferSize() + blk->getBufferSize()) ; + blk = left_blk ; + } + } + if(blk->getBuffer() + blk->getBufferSize() <= mBuffer + mBufferSize - mMinBlockSize) //has the right neighbor + { + U32 d = blk->getBufferSize() / mMinBlockSize ; + if((blk + d)->isFree()) + { + LLMemoryBlock* right_blk = blk + d ; + removeFromFreeSpace(blk + d) ; + blk->setBuffer(blk->getBuffer(), blk->getBufferSize() + right_blk->getBufferSize()) ; + } + } +#endif + + addToFreeSpace(blk) ; + + return ; +} + +//the top block in the list is full, pop it out of the list +void LLPrivateMemoryPool::LLMemoryChunk::popAvailBlockList(U32 blk_idx) +{ + if(mAvailBlockList[blk_idx]) + { + LLMemoryBlock* next = mAvailBlockList[blk_idx]->mNext ; + if(next) + { + next->mPrev = NULL ; + } + mAvailBlockList[blk_idx]->mPrev = NULL ; + mAvailBlockList[blk_idx]->mNext = NULL ; + mAvailBlockList[blk_idx] = next ; + } +} + +//add the block back to the free pool +void LLPrivateMemoryPool::LLMemoryChunk::addToFreeSpace(LLMemoryBlock* blk) +{ + llassert_always(!blk->mPrev) ; + llassert_always(!blk->mNext) ; + + U16 free_idx = blk->getBufferSize() / mMinBlockSize - 1; + + (blk + free_idx)->mSelf = blk ; //mark the end pointing back to the head. + free_idx = llmin(free_idx, (U16)(mPartitionLevels - 1)) ; + + blk->mNext = mFreeSpaceList[free_idx] ; + if(mFreeSpaceList[free_idx]) + { + mFreeSpaceList[free_idx]->mPrev = blk ; + } + mFreeSpaceList[free_idx] = blk ; + blk->mPrev = NULL ; + blk->mSelf = blk ; + + return ; +} + +//remove the space from the free pool +void LLPrivateMemoryPool::LLMemoryChunk::removeFromFreeSpace(LLMemoryBlock* blk) +{ + U16 free_idx = blk->getBufferSize() / mMinBlockSize - 1; + free_idx = llmin(free_idx, (U16)(mPartitionLevels - 1)) ; + + if(mFreeSpaceList[free_idx] == blk) + { + mFreeSpaceList[free_idx] = blk->mNext ; + } + if(blk->mPrev) + { + blk->mPrev->mNext = blk->mNext ; + } + if(blk->mNext) + { + blk->mNext->mPrev = blk->mPrev ; + } + blk->mNext = NULL ; + blk->mPrev = NULL ; + blk->mSelf = NULL ; + + return ; +} + +void LLPrivateMemoryPool::LLMemoryChunk::addToAvailBlockList(LLMemoryBlock* blk) +{ + llassert_always(!blk->mPrev) ; + llassert_always(!blk->mNext) ; + + U32 blk_idx = getBlockLevel(blk->getSlotSize()); + + blk->mNext = mAvailBlockList[blk_idx] ; + if(blk->mNext) + { + blk->mNext->mPrev = blk ; + } + blk->mPrev = NULL ; + mAvailBlockList[blk_idx] = blk ; + + return ; +} + +U32 LLPrivateMemoryPool::LLMemoryChunk::getPageIndex(U32 addr) +{ + return (addr - (U32)mDataBuffer) / mMinBlockSize ; +} + +//for mAvailBlockList +U32 LLPrivateMemoryPool::LLMemoryChunk::getBlockLevel(U32 size) +{ + llassert(size >= mMinSlotSize && size <= mMaxSlotSize) ; + + //start from 0 + return (size + mMinSlotSize - 1) / mMinSlotSize - 1 ; +} + +//for mFreeSpaceList +U16 LLPrivateMemoryPool::LLMemoryChunk::getPageLevel(U32 size) +{ + //start from 0 + U16 level = size / mMinBlockSize - 1 ; + if(level >= mPartitionLevels) + { + level = mPartitionLevels - 1 ; + } + return level ; +} + +//------------------------------------------------------------------- +//class LLPrivateMemoryPool +//-------------------------------------------------------------------- +const U32 CHUNK_SIZE = 4 << 20 ; //4 MB +const U32 LARGE_CHUNK_SIZE = 4 * CHUNK_SIZE ; //16 MB +LLPrivateMemoryPool::LLPrivateMemoryPool(S32 type) : + mMutexp(NULL), + mReservedPoolSize(0), + mHashFactor(1), + mType(type) +{ + const U32 MAX_POOL_SIZE = 256 * 1024 * 1024 ; //256 MB + + mMaxPoolSize = MAX_POOL_SIZE ; + if(type == STATIC_THREADED || type == VOLATILE_THREADED) + { + mMutexp = new LLMutex ; + } + + for(S32 i = 0 ; i < SUPER_ALLOCATION ; i++) + { + mChunkList[i] = NULL ; + } + + mNumOfChunks = 0 ; +} + +LLPrivateMemoryPool::~LLPrivateMemoryPool() +{ + destroyPool(); + delete mMutexp ; +} + +char* LLPrivateMemoryPool::allocate(U32 size) +{ + if(!size) + { + return NULL ; + } + + //if the asked size larger than MAX_BLOCK_SIZE, fetch from heap directly, the pool does not manage it + if(size >= CHUNK_SIZE) + { + return (char*)malloc(size) ; + } + + char* p = NULL ; + + //find the appropriate chunk + S32 chunk_idx = getChunkIndex(size) ; + + lock() ; + + LLMemoryChunk* chunk = mChunkList[chunk_idx]; + while(chunk) + { + if((p = chunk->allocate(size))) + { + break ; + } + chunk = chunk->mNext ; + } + + //fetch new memory chunk + if(!p) + { + if(mReservedPoolSize + CHUNK_SIZE > mMaxPoolSize) + { + chunk = mChunkList[chunk_idx]; + while(chunk) + { + if((p = chunk->allocate(size))) + { + break ; + } + chunk = chunk->mNext ; + } + } + + chunk = addChunk(chunk_idx) ; + if(chunk) + { + p = chunk->allocate(size) ; + } + } + + unlock() ; + + return p ; +} + +void LLPrivateMemoryPool::freeMem(void* addr) +{ + if(!addr) + { + return ; + } + + lock() ; + + LLMemoryChunk* chunk = findChunk((char*)addr) ; + + if(!chunk) + { + free(addr) ; //release from heap + } + else + { + chunk->freeMem(addr) ; + + if(chunk->empty()) + { + removeChunk(chunk) ; + } + } + + unlock() ; +} + +void LLPrivateMemoryPool::dump() +{ +} + +U32 LLPrivateMemoryPool::getTotalAllocatedSize() +{ + U32 total_allocated = 0 ; + + LLMemoryChunk* chunk ; + for(S32 i = 0 ; i < SUPER_ALLOCATION ; i++) + { + chunk = mChunkList[i]; + while(chunk) + { + total_allocated += chunk->getAllocatedSize() ; + chunk = chunk->mNext ; + } + } + + return total_allocated ; +} + +void LLPrivateMemoryPool::lock() +{ + if(mMutexp) + { + mMutexp->lock() ; + } +} + +void LLPrivateMemoryPool::unlock() +{ + if(mMutexp) + { + mMutexp->unlock() ; + } +} + +S32 LLPrivateMemoryPool::getChunkIndex(U32 size) +{ + S32 i ; + for(i = 0 ; size > MAX_SLOT_SIZES[i]; i++); + + llassert_always(i < SUPER_ALLOCATION); + + return i ; +} + +//destroy the entire pool +void LLPrivateMemoryPool::destroyPool() +{ + lock() ; + +#if 0 + if(mNumOfChunks > 0) + { + //Warn: + //should crash here because there is memory leaking if reach here. + // + + for(U32 i = 0 ; i < mHashFactor; i++) + { + while(mChunkHashList[i]) + { + removeChunk(mChunkHashList[i]) ; + } + } + } + + llassert_always(mNumOfChunks == 0) ; + llassert_always(mReservedPoolSize == 0) ; +#endif + + if(mNumOfChunks > 0) + { + llwarns << "There is some memory not freed when destroy the memory pool!" << llendl ; + } + + mNumOfChunks = 0 ; + mChunkHashList.clear() ; + mHashFactor = 1 ; + for(S32 i = 0 ; i < SUPER_ALLOCATION ; i++) + { + mChunkList[i] = NULL ; + } + + unlock() ; +} + +void LLPrivateMemoryPool::checkSize(U32 asked_size) +{ + if(mReservedPoolSize + asked_size > mMaxPoolSize) + { + llinfos << "Max pool size: " << mMaxPoolSize << llendl ; + llinfos << "Total reserved size: " << mReservedPoolSize + asked_size << llendl ; + llinfos << "Total_allocated Size: " << getTotalAllocatedSize() << llendl ; + + llerrs << "The pool is overflowing..." << llendl ; + } +} + +LLPrivateMemoryPool::LLMemoryChunk* LLPrivateMemoryPool::addChunk(S32 chunk_index) +{ + U32 preferred_size ; + U32 overhead ; + if(chunk_index < LARGE_ALLOCATION) + { + preferred_size = CHUNK_SIZE ; //4MB + overhead = LLMemoryChunk::getMaxOverhead(preferred_size, MIN_SLOT_SIZES[chunk_index], + MAX_SLOT_SIZES[chunk_index], MIN_BLOCK_SIZES[chunk_index], MAX_BLOCK_SIZES[chunk_index]) ; + } + else + { + preferred_size = LARGE_CHUNK_SIZE ; //16MB + overhead = LLMemoryChunk::getMaxOverhead(preferred_size, MIN_SLOT_SIZES[chunk_index], + MAX_SLOT_SIZES[chunk_index], MIN_BLOCK_SIZES[chunk_index], MAX_BLOCK_SIZES[chunk_index]) ; + } + + checkSize(preferred_size + overhead) ; + mReservedPoolSize += preferred_size + overhead ; + + char* buffer = (char*)malloc(preferred_size + overhead) ; + if(!buffer) + { + return NULL ; + } + + LLMemoryChunk* chunk = new (buffer) LLMemoryChunk() ; + chunk->init(buffer, preferred_size + overhead, MIN_SLOT_SIZES[chunk_index], + MAX_SLOT_SIZES[chunk_index], MIN_BLOCK_SIZES[chunk_index], MAX_BLOCK_SIZES[chunk_index]) ; + + //add to the tail of the linked list + { + if(!mChunkList[chunk_index]) + { + mChunkList[chunk_index] = chunk ; + } + else + { + LLMemoryChunk* cur = mChunkList[chunk_index] ; + while(cur->mNext) + { + cur = cur->mNext ; + } + cur->mNext = chunk ; + chunk->mPrev = cur ; + } + } + + //insert into the hash table + addToHashTable(chunk) ; + + mNumOfChunks++; + + return chunk ; +} + +void LLPrivateMemoryPool::removeChunk(LLMemoryChunk* chunk) +{ + if(!chunk) + { + return ; + } + + //remove from the linked list + for(S32 i = 0 ; i < SUPER_ALLOCATION ; i++) + { + if(mChunkList[i] == chunk) + { + mChunkList[i] = chunk->mNext ; + } + } + + if(chunk->mPrev) + { + chunk->mPrev->mNext = chunk->mNext ; + } + if(chunk->mNext) + { + chunk->mNext->mPrev = chunk->mPrev ; + } + + //remove from the hash table + removeFromHashTable(chunk) ; + + mNumOfChunks--; + mReservedPoolSize -= chunk->getBufferSize() ; + + //release memory + free(chunk->getBuffer()) ; +} + +U16 LLPrivateMemoryPool::findHashKey(const char* addr) +{ + return (((U32)addr) / CHUNK_SIZE) % mHashFactor ; +} + +LLPrivateMemoryPool::LLMemoryChunk* LLPrivateMemoryPool::findChunk(const char* addr) +{ + U16 key = findHashKey(addr) ; + if(mChunkHashList.size() <= key) + { + return NULL ; + } + + //check the hash value "key" + LLMemoryChunk* chunk = mChunkHashList[key] ; + while(chunk && !chunk->containsAddress(addr)) + { + chunk = chunk->mHashNext ; + } + + return chunk ; +} + +void LLPrivateMemoryPool::addToHashTable(LLMemoryChunk* chunk) +{ + static const U16 HASH_FACTORS[] = {41, 83, 193, 317, 419, 523, 0xFFFF}; + + U16 i ; + if(mChunkHashList.empty()) + { + mHashFactor = HASH_FACTORS[0] ; + rehash() ; + } + + U16 start_key = findHashKey(chunk->getBuffer()) ; + U16 end_key = findHashKey(chunk->getBuffer() + chunk->getBufferSize() - 1) ; + bool need_rehash = false ; + + if(mChunkHashList[start_key]) + { + if(mChunkHashList[start_key] == chunk) + { + return; //already inserted. + } + + llassert_always(!chunk->mHashNext) ; + + chunk->mHashNext = mChunkHashList[start_key] ; + mChunkHashList[start_key] = chunk ; + } + else + { + mChunkHashList[start_key] = chunk ; + } + if(start_key == end_key) + { + return ; //done + } + + if(!need_rehash) + { + if(mChunkHashList[end_key]) + { + llassert_always(mChunkHashList[end_key] != chunk) + + need_rehash = mChunkHashList[end_key]->mHashNext != NULL || mChunkHashList[end_key] == chunk->mHashNext; + if(!need_rehash) + { + mChunkHashList[end_key]->mHashNext = chunk ; + } + } + else + { + mChunkHashList[end_key] = chunk ; + } + } + + if(!need_rehash) + { + if(end_key < start_key) + { + need_rehash = fillHashTable(start_key + 1, mHashFactor, chunk) ; + if(!need_rehash) + { + need_rehash = fillHashTable(0, end_key, chunk) ; + } + } + else + { + need_rehash = fillHashTable(start_key + 1, end_key, chunk) ; + } + } + + if(need_rehash) + { + i = 0 ; + while(HASH_FACTORS[i] <= mHashFactor) i++; + + mHashFactor = HASH_FACTORS[i] ; + llassert_always(mHashFactor != 0xFFFF) ;//stop point to prevent endlessly recursive calls + + rehash() ; + } +} + +void LLPrivateMemoryPool::removeFromHashTable(LLMemoryChunk* chunk) +{ + U16 start_key = findHashKey(chunk->getBuffer()) ; + U16 end_key = findHashKey(chunk->getBuffer() + chunk->getBufferSize() - 1) ; + + mChunkHashList[start_key] = chunk->mHashNext ; + chunk->mHashNext = NULL ; + if(start_key == end_key) + { + return ; //done + } + + if(mChunkHashList[end_key] != chunk) + { + mChunkHashList[end_key]->mHashNext = NULL ; + } + else + { + mChunkHashList[end_key] = NULL ; + } + + if(end_key < start_key) + { + for(U16 i = start_key + 1 ; i < mHashFactor; i++) + { + mChunkHashList[i] = NULL ; + } + for(U16 i = 0 ; i < end_key; i++) + { + mChunkHashList[i] = NULL ; + } + } + else + { + for(U16 i = start_key + 1 ; i < end_key; i++) + { + mChunkHashList[i] = NULL ; + } + } +} + +void LLPrivateMemoryPool::rehash() +{ + llinfos << "new hash factor: " << mHashFactor << llendl ; + + mChunkHashList.clear() ; + mChunkHashList.resize(mHashFactor, NULL) ; + + LLMemoryChunk* chunk ; + for(U16 i = 0 ; i < SUPER_ALLOCATION ; i++) + { + chunk = mChunkList[i] ; + while(chunk) + { + chunk->mHashNext = NULL ; + addToHashTable(chunk) ; + chunk = chunk->mNext ; + } + } +} + +bool LLPrivateMemoryPool::fillHashTable(U16 start, U16 end, LLMemoryChunk* chunk) +{ + for(U16 i = start; i < end; i++) + { + if(mChunkHashList[i]) //the slot is occupied. + { + llassert_always(mChunkHashList[i] != chunk) ; + return true ; + } + else + { + mChunkHashList[i] = chunk ; + } + } + + return false ; +} + +//-------------------------------------------------------------------- +//class LLPrivateMemoryPoolManager +//-------------------------------------------------------------------- +LLPrivateMemoryPoolManager* LLPrivateMemoryPoolManager::sInstance = NULL ; + +LLPrivateMemoryPoolManager::LLPrivateMemoryPoolManager(BOOL enabled) +{ + mPoolList.resize(LLPrivateMemoryPool::MAX_TYPES) ; + + for(S32 i = 0 ; i < LLPrivateMemoryPool::MAX_TYPES; i++) + { + mPoolList[i] = NULL ; + } + + mPrivatePoolEnabled = enabled ; +} + +LLPrivateMemoryPoolManager::~LLPrivateMemoryPoolManager() +{ + +#if __DEBUG_PRIVATE_MEM__ + if(!sMemAllocationTracker.empty()) + { + llwarns << "there is potential memory leaking here. The list of not freed memory blocks are from: " <<llendl ; + + S32 k = 0 ; + for(mem_allocation_info_t::iterator iter = sMemAllocationTracker.begin() ; iter != sMemAllocationTracker.end() ; ++iter) + { + llinfos << k++ << ", " << iter->second << llendl ; + } + sMemAllocationTracker.clear() ; + } +#endif + +#if 0 + //all private pools should be released by their owners before reaching here. + for(S32 i = 0 ; i < LLPrivateMemoryPool::MAX_TYPES; i++) + { + llassert_always(!mPoolList[i]) ; + } + mPoolList.clear() ; + +#else + //forcefully release all memory + for(S32 i = 0 ; i < LLPrivateMemoryPool::MAX_TYPES; i++) + { + if(mPoolList[i]) + { + delete mPoolList[i] ; + mPoolList[i] = NULL ; + } + } + mPoolList.clear() ; +#endif +} + +//static +void LLPrivateMemoryPoolManager::initClass(BOOL enabled) +{ + llassert_always(!sInstance) ; + + sInstance = new LLPrivateMemoryPoolManager(enabled) ; +} + +//static +LLPrivateMemoryPoolManager* LLPrivateMemoryPoolManager::getInstance() +{ + //if(!sInstance) + //{ + // sInstance = new LLPrivateMemoryPoolManager(FALSE) ; + //} + return sInstance ; +} + +//static +void LLPrivateMemoryPoolManager::destroyClass() +{ + if(sInstance) + { + delete sInstance ; + sInstance = NULL ; + } +} + +LLPrivateMemoryPool* LLPrivateMemoryPoolManager::newPool(S32 type) +{ + if(!mPrivatePoolEnabled) + { + return NULL ; + } + + if(!mPoolList[type]) + { + mPoolList[type] = new LLPrivateMemoryPool(type) ; + } + + return mPoolList[type] ; +} + +void LLPrivateMemoryPoolManager::deletePool(LLPrivateMemoryPool* pool) +{ + if(pool && pool->isEmpty()) + { + mPoolList[pool->getType()] = NULL ; + delete pool; + } +} + +//debug +void LLPrivateMemoryPoolManager::updateStatistics() +{ + mTotalReservedSize = 0 ; + mTotalAllocatedSize = 0 ; + + for(U32 i = 0; i < mPoolList.size(); i++) + { + if(mPoolList[i]) + { + mTotalReservedSize += mPoolList[i]->getTotalReservedSize() ; + mTotalAllocatedSize += mPoolList[i]->getTotalAllocatedSize() ; + } + } +} + +#if __DEBUG_PRIVATE_MEM__ +//static +char* LLPrivateMemoryPoolManager::allocate(LLPrivateMemoryPool* poolp, U32 size, const char* function, const int line) +{ + char* p ; + + if(!poolp) + { + p = (char*)malloc(size) ; + } + else + { + p = poolp->allocate(size) ; + } + + if(p) + { + char num[16] ; + sprintf(num, " line: %d ", line) ; + std::string str(function) ; + str += num; + + sMemAllocationTracker[p] = str ; + } + + return p ; +} +#else +//static +char* LLPrivateMemoryPoolManager::allocate(LLPrivateMemoryPool* poolp, U32 size) +{ + if(poolp) + { + return poolp->allocate(size) ; + } + else + { + return (char*)malloc(size) ; + } +} +#endif + +//static +void LLPrivateMemoryPoolManager::freeMem(LLPrivateMemoryPool* poolp, void* addr) +{ + if(!addr) + { + return ; + } + +#if __DEBUG_PRIVATE_MEM__ + sMemAllocationTracker.erase((char*)addr) ; +#endif + + if(poolp) + { + poolp->freeMem(addr) ; + } + else + { + free(addr) ; + } +} + +//-------------------------------------------------------------------- +//class LLPrivateMemoryPoolTester +//-------------------------------------------------------------------- +#if 0 +LLPrivateMemoryPoolTester* LLPrivateMemoryPoolTester::sInstance = NULL ; +LLPrivateMemoryPool* LLPrivateMemoryPoolTester::sPool = NULL ; +LLPrivateMemoryPoolTester::LLPrivateMemoryPoolTester() +{ +} + +LLPrivateMemoryPoolTester::~LLPrivateMemoryPoolTester() +{ +} + +//static +LLPrivateMemoryPoolTester* LLPrivateMemoryPoolTester::getInstance() +{ + if(!sInstance) + { + sInstance = ::new LLPrivateMemoryPoolTester() ; + } + return sInstance ; +} + +//static +void LLPrivateMemoryPoolTester::destroy() +{ + if(sInstance) + { + ::delete sInstance ; + sInstance = NULL ; + } + + if(sPool) + { + LLPrivateMemoryPoolManager::getInstance()->deletePool(sPool) ; + sPool = NULL ; + } +} + +void LLPrivateMemoryPoolTester::run(S32 type) +{ + if(sPool) + { + LLPrivateMemoryPoolManager::getInstance()->deletePool(sPool) ; + } + sPool = LLPrivateMemoryPoolManager::getInstance()->newPool(type) ; + + //run the test + correctnessTest() ; + performanceTest() ; + //fragmentationtest() ; + + //release pool. + LLPrivateMemoryPoolManager::getInstance()->deletePool(sPool) ; + sPool = NULL ; +} + +void LLPrivateMemoryPoolTester::test(U32 min_size, U32 max_size, U32 stride, U32 times, + bool random_deletion, bool output_statistics) +{ + U32 levels = (max_size - min_size) / stride + 1 ; + char*** p ; + U32 i, j ; + U32 total_allocated_size = 0 ; + + //allocate space for p ; + if(!(p = ::new char**[times]) || !(*p = ::new char*[times * levels])) + { + llerrs << "memory initialization for p failed" << llendl ; + } + + //init + for(i = 0 ; i < times; i++) + { + p[i] = *p + i * levels ; + for(j = 0 ; j < levels; j++) + { + p[i][j] = NULL ; + } + } + + //allocation + U32 size ; + for(i = 0 ; i < times ; i++) + { + for(j = 0 ; j < levels; j++) + { + size = min_size + j * stride ; + p[i][j] = ALLOCATE_MEM(sPool, size) ; + + total_allocated_size+= size ; + + *(U32*)p[i][j] = i ; + *((U32*)p[i][j] + 1) = j ; + //p[i][j][size - 1] = '\0' ; //access the last element to verify the success of the allocation. + + //randomly release memory + if(random_deletion) + { + S32 k = rand() % levels ; + + if(p[i][k]) + { + llassert_always(*(U32*)p[i][k] == i && *((U32*)p[i][k] + 1) == k) ; + FREE_MEM(sPool, p[i][k]) ; + total_allocated_size -= min_size + k * stride ; + p[i][k] = NULL ; + } + } + } + } + + //output pool allocation statistics + if(output_statistics) + { + } + + //release all memory allocations + for(i = 0 ; i < times; i++) + { + for(j = 0 ; j < levels; j++) + { + if(p[i][j]) + { + llassert_always(*(U32*)p[i][j] == i && *((U32*)p[i][j] + 1) == j) ; + FREE_MEM(sPool, p[i][j]) ; + total_allocated_size -= min_size + j * stride ; + p[i][j] = NULL ; + } + } + } + + ::delete[] *p ; + ::delete[] p ; +} + +void LLPrivateMemoryPoolTester::testAndTime(U32 size, U32 times) +{ + LLTimer timer ; + + llinfos << " -**********************- " << llendl ; + llinfos << "test size: " << size << " test times: " << times << llendl ; + + timer.reset() ; + char** p = new char*[times] ; + + //using the customized memory pool + //allocation + for(U32 i = 0 ; i < times; i++) + { + p[i] = ALLOCATE_MEM(sPool, size) ; + if(!p[i]) + { + llerrs << "allocation failed" << llendl ; + } + } + //de-allocation + for(U32 i = 0 ; i < times; i++) + { + FREE_MEM(sPool, p[i]) ; + p[i] = NULL ; + } + llinfos << "time spent using customized memory pool: " << timer.getElapsedTimeF32() << llendl ; + + timer.reset() ; + + //using the standard allocator/de-allocator: + //allocation + for(U32 i = 0 ; i < times; i++) + { + p[i] = ::new char[size] ; + if(!p[i]) + { + llerrs << "allocation failed" << llendl ; + } + } + //de-allocation + for(U32 i = 0 ; i < times; i++) + { + ::delete[] p[i] ; + p[i] = NULL ; + } + llinfos << "time spent using standard allocator/de-allocator: " << timer.getElapsedTimeF32() << llendl ; + + delete[] p; +} + +void LLPrivateMemoryPoolTester::correctnessTest() +{ + //try many different sized allocation, and all kinds of edge cases, access the allocated memory + //to see if allocation is right. + + //edge case + char* p = ALLOCATE_MEM(sPool, 0) ; + FREE_MEM(sPool, p) ; + + //small sized + // [8 bytes, 2KB), each asks for 256 allocations and deallocations + test(8, 2040, 8, 256, true, true) ; + + //medium sized + //[2KB, 512KB), each asks for 16 allocations and deallocations + test(2048, 512 * 1024 - 2048, 2048, 16, true, true) ; + + //large sized + //[512KB, 4MB], each asks for 8 allocations and deallocations + test(512 * 1024, 4 * 1024 * 1024, 64 * 1024, 6, true, true) ; +} + +void LLPrivateMemoryPoolTester::performanceTest() +{ + U32 test_size[3] = {768, 3* 1024, 3* 1024 * 1024}; + + //small sized + testAndTime(test_size[0], 8) ; + + //medium sized + testAndTime(test_size[1], 8) ; + + //large sized + testAndTime(test_size[2], 8) ; +} + +void LLPrivateMemoryPoolTester::fragmentationtest() +{ + //for internal fragmentation statistics: + //every time when asking for a new chunk during correctness test, and performance test, + //print out the chunk usage statistices. +} +#endif +//-------------------------------------------------------------------- diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h index 3bd1403576..f9099da612 100644 --- a/indra/llcommon/llmemory.h +++ b/indra/llcommon/llmemory.h @@ -27,7 +27,6 @@ #define LLMEMORY_H #include "llmemtype.h" - #if LL_DEBUG inline void* ll_aligned_malloc( size_t size, int align ) { @@ -105,6 +104,10 @@ inline void ll_aligned_free_32(void *p) #define ll_aligned_free_32 free #endif // LL_DEBUG +#ifndef __DEBUG_PRIVATE_MEM__ +#define __DEBUG_PRIVATE_MEM__ 0 +#endif + class LL_COMMON_API LLMemory { public: @@ -115,8 +118,24 @@ public: // Return value is zero if not known. static U64 getCurrentRSS(); static U32 getWorkingSetSize(); + static void* tryToAlloc(void* address, U32 size); + static void initMaxHeapSizeGB(F32 max_heap_size_gb, BOOL prevent_heap_failure); + static void updateMemoryInfo() ; + static void logMemoryInfo(BOOL update = FALSE); + static S32 isMemoryPoolLow(); + + static U32 getAvailableMemKB() ; + static U32 getMaxMemKB() ; + static U32 getAllocatedMemKB() ; private: static char* reserveMem; + static U32 sAvailPhysicalMemInKB ; + static U32 sMaxPhysicalMemInKB ; + static U32 sAllocatedMemInKB; + static U32 sAllocatedPageSizeInKB ; + + static U32 sMaxHeapSizeInKB; + static BOOL sEnableMemoryFailurePrevention; }; //---------------------------------------------------------------------------- @@ -163,6 +182,310 @@ private: //---------------------------------------------------------------------------- + +// +//class LLPrivateMemoryPool defines a private memory pool for an application to use, so the application does not +//need to access the heap directly fro each memory allocation. Throught this, the allocation speed is faster, +//and reduces virtaul address space gragmentation problem. +//Note: this class is thread-safe by passing true to the constructor function. However, you do not need to do this unless +//you are sure the memory allocation and de-allocation will happen in different threads. To make the pool thread safe +//increases allocation and deallocation cost. +// +class LL_COMMON_API LLPrivateMemoryPool +{ + friend class LLPrivateMemoryPoolManager ; + +public: + class LL_COMMON_API LLMemoryBlock //each block is devided into slots uniformly + { + public: + LLMemoryBlock() ; + ~LLMemoryBlock() ; + + void init(char* buffer, U32 buffer_size, U32 slot_size) ; + void setBuffer(char* buffer, U32 buffer_size) ; + + char* allocate() ; + void freeMem(void* addr) ; + + bool empty() {return !mAllocatedSlots;} + bool isFull() {return mAllocatedSlots == mTotalSlots;} + bool isFree() {return !mTotalSlots;} + + U32 getSlotSize()const {return mSlotSize;} + U32 getTotalSlots()const {return mTotalSlots;} + U32 getBufferSize()const {return mBufferSize;} + char* getBuffer() const {return mBuffer;} + + //debug use + void resetBitMap() ; + private: + char* mBuffer; + U32 mSlotSize ; //when the block is not initialized, it is the buffer size. + U32 mBufferSize ; + U32 mUsageBits ; + U8 mTotalSlots ; + U8 mAllocatedSlots ; + U8 mDummySize ; //size of extra bytes reserved for mUsageBits. + + public: + LLMemoryBlock* mPrev ; + LLMemoryBlock* mNext ; + LLMemoryBlock* mSelf ; + + struct CompareAddress + { + bool operator()(const LLMemoryBlock* const& lhs, const LLMemoryBlock* const& rhs) + { + return (U32)lhs->getBuffer() < (U32)rhs->getBuffer(); + } + }; + }; + + class LL_COMMON_API LLMemoryChunk //is divided into memory blocks. + { + public: + LLMemoryChunk() ; + ~LLMemoryChunk() ; + + void init(char* buffer, U32 buffer_size, U32 min_slot_size, U32 max_slot_size, U32 min_block_size, U32 max_block_size) ; + void setBuffer(char* buffer, U32 buffer_size) ; + + bool empty() ; + + char* allocate(U32 size) ; + void freeMem(void* addr) ; + + char* getBuffer() const {return mBuffer;} + U32 getBufferSize() const {return mBufferSize;} + U32 getAllocatedSize() const {return mAlloatedSize;} + + bool containsAddress(const char* addr) const; + + static U32 getMaxOverhead(U32 data_buffer_size, U32 min_slot_size, + U32 max_slot_size, U32 min_block_size, U32 max_block_size) ; + + void dump() ; + + private: + U32 getPageIndex(U32 addr) ; + U32 getBlockLevel(U32 size) ; + U16 getPageLevel(U32 size) ; + LLMemoryBlock* addBlock(U32 blk_idx) ; + void popAvailBlockList(U32 blk_idx) ; + void addToFreeSpace(LLMemoryBlock* blk) ; + void removeFromFreeSpace(LLMemoryBlock* blk) ; + void removeBlock(LLMemoryBlock* blk) ; + void addToAvailBlockList(LLMemoryBlock* blk) ; + U32 calcBlockSize(U32 slot_size); + LLMemoryBlock* createNewBlock(LLMemoryBlock* blk, U32 buffer_size, U32 slot_size, U32 blk_idx) ; + + private: + LLMemoryBlock** mAvailBlockList ;//256 by mMinSlotSize + LLMemoryBlock** mFreeSpaceList; + LLMemoryBlock* mBlocks ; //index of blocks by address. + + char* mBuffer ; + U32 mBufferSize ; + char* mDataBuffer ; + char* mMetaBuffer ; + U32 mMinBlockSize ; + U32 mMinSlotSize ; + U32 mMaxSlotSize ; + U32 mAlloatedSize ; + U16 mBlockLevels; + U16 mPartitionLevels; + + public: + //form a linked list + LLMemoryChunk* mNext ; + LLMemoryChunk* mPrev ; + + LLMemoryChunk* mHashNext ; + } ; + +private: + LLPrivateMemoryPool(S32 type) ; + ~LLPrivateMemoryPool() ; + + char *allocate(U32 size) ; + void freeMem(void* addr) ; + + void dump() ; + U32 getTotalAllocatedSize() ; + U32 getTotalReservedSize() {return mReservedPoolSize;} + S32 getType() const {return mType; } + bool isEmpty() const {return !mNumOfChunks; } + +private: + void lock() ; + void unlock() ; + S32 getChunkIndex(U32 size) ; + LLMemoryChunk* addChunk(S32 chunk_index) ; + void checkSize(U32 asked_size) ; + void removeChunk(LLMemoryChunk* chunk) ; + U16 findHashKey(const char* addr); + void addToHashTable(LLMemoryChunk* chunk) ; + void removeFromHashTable(LLMemoryChunk* chunk) ; + void rehash() ; + bool fillHashTable(U16 start, U16 end, LLMemoryChunk* chunk) ; + LLMemoryChunk* findChunk(const char* addr) ; + + void destroyPool() ; + +public: + enum + { + SMALL_ALLOCATION = 0, //from 8 bytes to 2KB(exclusive), page size 2KB, max chunk size is 4MB. + MEDIUM_ALLOCATION, //from 2KB to 512KB(exclusive), page size 32KB, max chunk size 4MB + LARGE_ALLOCATION, //from 512KB to 4MB(inclusive), page size 64KB, max chunk size 16MB + SUPER_ALLOCATION //allocation larger than 4MB. + }; + + enum + { + STATIC = 0 , //static pool(each alllocation stays for a long time) without threading support + VOLATILE, //Volatile pool(each allocation stays for a very short time) without threading support + STATIC_THREADED, //static pool with threading support + VOLATILE_THREADED, //volatile pool with threading support + MAX_TYPES + }; //pool types + +private: + LLMutex* mMutexp ; + U32 mMaxPoolSize; + U32 mReservedPoolSize ; + + LLMemoryChunk* mChunkList[SUPER_ALLOCATION] ; //all memory chunks reserved by this pool, sorted by address + std::vector<LLMemoryChunk*> mChunkHashList ; + U16 mNumOfChunks ; + U16 mHashFactor ; + + S32 mType ; +}; + +class LL_COMMON_API LLPrivateMemoryPoolManager +{ +private: + LLPrivateMemoryPoolManager(BOOL enabled) ; + ~LLPrivateMemoryPoolManager() ; + +public: + static LLPrivateMemoryPoolManager* getInstance() ; + static void initClass(BOOL enabled) ; + static void destroyClass() ; + + LLPrivateMemoryPool* newPool(S32 type) ; + void deletePool(LLPrivateMemoryPool* pool) ; + +private: + static LLPrivateMemoryPoolManager* sInstance ; + std::vector<LLPrivateMemoryPool*> mPoolList ; + BOOL mPrivatePoolEnabled; + +public: + //debug and statistics info. + void updateStatistics() ; + + U32 mTotalReservedSize ; + U32 mTotalAllocatedSize ; + +public: +#if __DEBUG_PRIVATE_MEM__ + static char* allocate(LLPrivateMemoryPool* poolp, U32 size, const char* function, const int line) ; + + typedef std::map<char*, std::string> mem_allocation_info_t ; + static mem_allocation_info_t sMemAllocationTracker; +#else + static char* allocate(LLPrivateMemoryPool* poolp, U32 size) ; +#endif + static void freeMem(LLPrivateMemoryPool* poolp, void* addr) ; +}; + +//------------------------------------------------------------------------------------- +#if __DEBUG_PRIVATE_MEM__ +#define ALLOCATE_MEM(poolp, size) LLPrivateMemoryPoolManager::allocate((poolp), (size), __FUNCTION__, __LINE__) +#else +#define ALLOCATE_MEM(poolp, size) LLPrivateMemoryPoolManager::allocate((poolp), (size)) +#endif +#define FREE_MEM(poolp, addr) LLPrivateMemoryPoolManager::freeMem((poolp), (addr)) +//------------------------------------------------------------------------------------- + +// +//the below singleton is used to test the private memory pool. +// +#if 0 +class LL_COMMON_API LLPrivateMemoryPoolTester +{ +private: + LLPrivateMemoryPoolTester() ; + ~LLPrivateMemoryPoolTester() ; + +public: + static LLPrivateMemoryPoolTester* getInstance() ; + static void destroy() ; + + void run(S32 type) ; + +private: + void correctnessTest() ; + void performanceTest() ; + void fragmentationtest() ; + + void test(U32 min_size, U32 max_size, U32 stride, U32 times, bool random_deletion, bool output_statistics) ; + void testAndTime(U32 size, U32 times) ; + +#if 0 +public: + void* operator new(size_t size) + { + return (void*)sPool->allocate(size) ; + } + void operator delete(void* addr) + { + sPool->freeMem(addr) ; + } + void* operator new[](size_t size) + { + return (void*)sPool->allocate(size) ; + } + void operator delete[](void* addr) + { + sPool->freeMem(addr) ; + } +#endif + +private: + static LLPrivateMemoryPoolTester* sInstance; + static LLPrivateMemoryPool* sPool ; + static LLPrivateMemoryPool* sThreadedPool ; +}; +#if 0 +//static +void* LLPrivateMemoryPoolTester::operator new(size_t size) +{ + return (void*)sPool->allocate(size) ; +} + +//static +void LLPrivateMemoryPoolTester::operator delete(void* addr) +{ + sPool->free(addr) ; +} + +//static +void* LLPrivateMemoryPoolTester::operator new[](size_t size) +{ + return (void*)sPool->allocate(size) ; +} + +//static +void LLPrivateMemoryPoolTester::operator delete[](void* addr) +{ + sPool->free(addr) ; +} +#endif +#endif // LLRefCount moved to llrefcount.h // LLPointer moved to llpointer.h diff --git a/indra/llcommon/llscopedvolatileaprpool.h b/indra/llcommon/llscopedvolatileaprpool.h new file mode 100644 index 0000000000..dbaf4edcad --- /dev/null +++ b/indra/llcommon/llscopedvolatileaprpool.h @@ -0,0 +1,52 @@ +/** + * @file llscopedvolatileaprpool.h + * @brief Implementation of LLScopedVolatileAPRPool + * + * $LicenseInfo:firstyear=2010&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2011, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +#ifndef LL_LLSCOPEDVOLATILEAPRPOOL_H +#define LL_LLSCOPEDVOLATILEAPRPOOL_H + +#include "llthread.h" + +/** Scoped volatile memory pool. + * + * As the LLVolatileAPRPool should never keep allocations very + * long, its most common use is for allocations with a lifetime + * equal to it's scope. + * + * This is a convenience class that makes just a little easier to type. + */ +class LL_COMMON_API LLScopedVolatileAPRPool +{ +private: + LLVolatileAPRPool& mPool; + apr_pool_t* mScopedAPRpool; // The use of apr_pool_t is OK here. +public: + LLScopedVolatileAPRPool() : mPool(LLThreadLocalData::tldata().mVolatileAPRPool), mScopedAPRpool(mPool.getVolatileAPRPool()) { } + ~LLScopedVolatileAPRPool() { mPool.clearVolatileAPRPool(); } + //! @attention Only use this to pass the underlaying pointer to a libapr-1 function that requires it. + operator apr_pool_t*() const { return mScopedAPRpool; } // The use of apr_pool_t is OK here. +}; + +#endif diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp index 4063cc730b..bdde1b5c48 100644 --- a/indra/llcommon/llthread.cpp +++ b/indra/llcommon/llthread.cpp @@ -36,6 +36,12 @@ #include <sched.h> #endif +#if !LL_DARWIN +U32 ll_thread_local local_thread_ID = 0; +#endif + +U32 LLThread::sIDIter = 0; + //---------------------------------------------------------------------------- // Usage: // void run_func(LLThread* thread) @@ -56,12 +62,6 @@ // //---------------------------------------------------------------------------- -#if !LL_DARWIN -U32 ll_thread_local sThreadID = 0; -#endif - -U32 LLThread::sIDIter = 0; - LL_COMMON_API void assert_main_thread() { static U32 s_thread_id = LLThread::currentID(); @@ -79,9 +79,12 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap LLThread *threadp = (LLThread *)datap; #if !LL_DARWIN - sThreadID = threadp->mID; + local_thread_ID = threadp->mID; #endif + // Create a thread local data. + LLThreadLocalData::create(threadp); + // Run the user supplied function threadp->run(); @@ -94,40 +97,22 @@ void *APR_THREAD_FUNC LLThread::staticRun(apr_thread_t *apr_threadp, void *datap } -LLThread::LLThread(const std::string& name, apr_pool_t *poolp) : - mPaused(FALSE), +LLThread::LLThread(std::string const& name) : + mPaused(false), mName(name), mAPRThreadp(NULL), - mStatus(STOPPED) + mStatus(STOPPED), + mThreadLocalData(NULL) { - mID = ++sIDIter; + mID = ++sIDIter; //flaw: assume this is called only in the main thread! - // Thread creation probably CAN be paranoid about APR being initialized, if necessary - if (poolp) - { - mIsLocalPool = FALSE; - mAPRPoolp = poolp; - } - else - { - mIsLocalPool = TRUE; - apr_pool_create(&mAPRPoolp, NULL); // Create a subpool for this thread - } - mRunCondition = new LLCondition(mAPRPoolp); - - mLocalAPRFilePoolp = NULL ; + mRunCondition = new LLCondition; } LLThread::~LLThread() { shutdown(); - - if(mLocalAPRFilePoolp) - { - delete mLocalAPRFilePoolp ; - mLocalAPRFilePoolp = NULL ; - } } void LLThread::shutdown() @@ -164,7 +149,7 @@ void LLThread::shutdown() if (!isStopped()) { // This thread just wouldn't stop, even though we gave it time - //llwarns << "LLThread::~LLThread() exiting thread before clean exit!" << llendl; + //llwarns << "LLThread::shutdown() exiting thread before clean exit!" << llendl; // Put a stake in its heart. apr_thread_exit(mAPRThreadp, -1); return; @@ -174,15 +159,8 @@ void LLThread::shutdown() delete mRunCondition; mRunCondition = 0; - - if (mIsLocalPool && mAPRPoolp) - { - apr_pool_destroy(mAPRPoolp); - mAPRPoolp = 0; - } } - void LLThread::start() { llassert(isStopped()); @@ -191,7 +169,7 @@ void LLThread::start() mStatus = RUNNING; apr_status_t status = - apr_thread_create(&mAPRThreadp, NULL, staticRun, (void *)this, mAPRPoolp); + apr_thread_create(&mAPRThreadp, NULL, staticRun, (void *)this, tldata().mRootPool()); if(status == APR_SUCCESS) { @@ -216,7 +194,7 @@ void LLThread::pause() if (!mPaused) { // this will cause the thread to stop execution as soon as checkPause() is called - mPaused = 1; // Does not need to be atomic since this is only set/unset from the main thread + mPaused = true; // Does not need to be atomic since this is only set/unset from the main thread } } @@ -224,7 +202,7 @@ void LLThread::unpause() { if (mPaused) { - mPaused = 0; + mPaused = false; } wake(); // wake up the thread if necessary @@ -301,116 +279,76 @@ void LLThread::wakeLocked() } } -//============================================================================ - -LLMutex::LLMutex(apr_pool_t *poolp) : - mAPRMutexp(NULL), mCount(0), mLockingThread(NO_THREAD) -{ - //if (poolp) - //{ - // mIsLocalPool = FALSE; - // mAPRPoolp = poolp; - //} - //else - { - mIsLocalPool = TRUE; - apr_pool_create(&mAPRPoolp, NULL); // Create a subpool for this thread - } - apr_thread_mutex_create(&mAPRMutexp, APR_THREAD_MUTEX_UNNESTED, mAPRPoolp); -} +#ifdef SHOW_ASSERT +// This allows the use of llassert(is_main_thread()) to assure the current thread is the main thread. +static apr_os_thread_t main_thread_id; +LL_COMMON_API bool is_main_thread(void) { return apr_os_thread_equal(main_thread_id, apr_os_thread_current()); } +#endif +// The thread private handle to access the LLThreadLocalData instance. +apr_threadkey_t* LLThreadLocalData::sThreadLocalDataKey; -LLMutex::~LLMutex() +//static +void LLThreadLocalData::init(void) { -#if MUTEX_DEBUG - //bad assertion, the subclass LLSignal might be "locked", and that's OK - //llassert_always(!isLocked()); // better not be locked! -#endif - apr_thread_mutex_destroy(mAPRMutexp); - mAPRMutexp = NULL; - if (mIsLocalPool) + // Only do this once. + if (sThreadLocalDataKey) { - apr_pool_destroy(mAPRPoolp); + return; } -} + apr_status_t status = apr_threadkey_private_create(&sThreadLocalDataKey, &LLThreadLocalData::destroy, LLAPRRootPool::get()()); + ll_apr_assert_status(status); // Or out of memory, or system-imposed limit on the + // total number of keys per process {PTHREAD_KEYS_MAX} + // has been exceeded. -void LLMutex::lock() -{ -#if LL_DARWIN - if (mLockingThread == LLThread::currentID()) -#else - if (mLockingThread == sThreadID) -#endif - { //redundant lock - mCount++; - return; - } - - apr_thread_mutex_lock(mAPRMutexp); - -#if MUTEX_DEBUG - // Have to have the lock before we can access the debug info - U32 id = LLThread::currentID(); - if (mIsLocked[id] != FALSE) - llerrs << "Already locked in Thread: " << id << llendl; - mIsLocked[id] = TRUE; -#endif + // Create the thread-local data for the main thread (this function is called by the main thread). + LLThreadLocalData::create(NULL); -#if LL_DARWIN - mLockingThread = LLThread::currentID(); -#else - mLockingThread = sThreadID; +#ifdef SHOW_ASSERT + // This function is called by the main thread. + main_thread_id = apr_os_thread_current(); #endif } -void LLMutex::unlock() +// This is called once for every thread when the thread is destructed. +//static +void LLThreadLocalData::destroy(void* thread_local_data) { - if (mCount > 0) - { //not the root unlock - mCount--; - return; - } - -#if MUTEX_DEBUG - // Access the debug info while we have the lock - U32 id = LLThread::currentID(); - if (mIsLocked[id] != TRUE) - llerrs << "Not locked in Thread: " << id << llendl; - mIsLocked[id] = FALSE; -#endif - - mLockingThread = NO_THREAD; - apr_thread_mutex_unlock(mAPRMutexp); + delete static_cast<LLThreadLocalData*>(thread_local_data); } -bool LLMutex::isLocked() +//static +void LLThreadLocalData::create(LLThread* threadp) { - apr_status_t status = apr_thread_mutex_trylock(mAPRMutexp); - if (APR_STATUS_IS_EBUSY(status)) + LLThreadLocalData* new_tld = new LLThreadLocalData; + if (threadp) { - return true; - } - else - { - apr_thread_mutex_unlock(mAPRMutexp); - return false; + threadp->mThreadLocalData = new_tld; } + apr_status_t status = apr_threadkey_private_set(new_tld, sThreadLocalDataKey); + llassert_always(status == APR_SUCCESS); } -U32 LLMutex::lockingThread() const +//static +LLThreadLocalData& LLThreadLocalData::tldata(void) { - return mLockingThread; + if (!sThreadLocalDataKey) + { + LLThreadLocalData::init(); + } + + void* data; + apr_status_t status = apr_threadkey_private_get(&data, sThreadLocalDataKey); + llassert_always(status == APR_SUCCESS); + return *static_cast<LLThreadLocalData*>(data); } //============================================================================ -LLCondition::LLCondition(apr_pool_t *poolp) : - LLMutex(poolp) +LLCondition::LLCondition(LLAPRPool& parent) : LLMutex(parent) { - // base class (LLMutex) has already ensured that mAPRPoolp is set up. - - apr_thread_cond_create(&mAPRCondp, mAPRPoolp); + apr_thread_cond_create(&mAPRCondp, mPool()); } @@ -423,15 +361,6 @@ LLCondition::~LLCondition() void LLCondition::wait() { - if (!isLocked()) - { //mAPRMutexp MUST be locked before calling apr_thread_cond_wait - apr_thread_mutex_lock(mAPRMutexp); -#if MUTEX_DEBUG - // avoid asserts on destruction in non-release builds - U32 id = LLThread::currentID(); - mIsLocked[id] = TRUE; -#endif - } apr_thread_cond_wait(mAPRCondp, mAPRMutexp); } @@ -446,6 +375,44 @@ void LLCondition::broadcast() } //============================================================================ +LLMutexBase::LLMutexBase() : + mLockingThread(NO_THREAD), + mCount(0) +{ +} + +void LLMutexBase::lock() +{ +#if LL_DARWIN + if (mLockingThread == LLThread::currentID()) +#else + if (mLockingThread == local_thread_ID) +#endif + { //redundant lock + mCount++; + return; + } + + apr_thread_mutex_lock(mAPRMutexp); + +#if LL_DARWIN + mLockingThread = LLThread::currentID(); +#else + mLockingThread = local_thread_ID; +#endif +} + +void LLMutexBase::unlock() +{ + if (mCount > 0) + { //not the root unlock + mCount--; + return; + } + mLockingThread = NO_THREAD; + + apr_thread_mutex_unlock(mAPRMutexp); +} //---------------------------------------------------------------------------- @@ -457,7 +424,7 @@ void LLThreadSafeRefCount::initThreadSafeRefCount() { if (!sMutex) { - sMutex = new LLMutex(0); + sMutex = new LLMutex; } } diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h index 40291a2569..c732e3bc77 100644 --- a/indra/llcommon/llthread.h +++ b/indra/llcommon/llthread.h @@ -29,7 +29,13 @@ #include "llapp.h" #include "llapr.h" +#include "llmemory.h" #include "apr_thread_cond.h" +#include "llaprpool.h" + +#ifdef SHOW_ASSERT +extern LL_COMMON_API bool is_main_thread(void); +#endif class LLThread; class LLMutex; @@ -41,6 +47,22 @@ class LLCondition; #define ll_thread_local __thread #endif +class LL_COMMON_API LLThreadLocalData +{ +private: + static apr_threadkey_t* sThreadLocalDataKey; + +public: + // Thread-local memory pools. + LLAPRRootPool mRootPool; + LLVolatileAPRPool mVolatileAPRPool; + + static void init(void); + static void destroy(void* thread_local_data); + static void create(LLThread* pthread); + static LLThreadLocalData& tldata(void); +}; + class LL_COMMON_API LLThread { private: @@ -54,7 +76,7 @@ public: QUITTING= 2 // Someone wants this thread to quit } EThreadStatus; - LLThread(const std::string& name, apr_pool_t *poolp = NULL); + LLThread(std::string const& name); virtual ~LLThread(); // Warning! You almost NEVER want to destroy a thread unless it's in the STOPPED state. virtual void shutdown(); // stops the thread @@ -69,7 +91,7 @@ public: // Called from MAIN THREAD. void pause(); void unpause(); - bool isPaused() { return isStopped() || mPaused == TRUE; } + bool isPaused() { return isStopped() || mPaused; } // Cause the thread to wake up and check its condition void wake(); @@ -83,13 +105,11 @@ public: // this kicks off the apr thread void start(void); - apr_pool_t *getAPRPool() { return mAPRPoolp; } - LLVolatileAPRPool* getLocalAPRFilePool() { return mLocalAPRFilePoolp ; } - - U32 getID() const { return mID; } + // Return thread-local data for the current thread. + static LLThreadLocalData& tldata(void) { return LLThreadLocalData::tldata(); } private: - BOOL mPaused; + bool mPaused; // static function passed to APR thread creation routine static void *APR_THREAD_FUNC staticRun(apr_thread_t *apr_threadp, void *datap); @@ -99,15 +119,11 @@ protected: LLCondition* mRunCondition; apr_thread_t *mAPRThreadp; - apr_pool_t *mAPRPoolp; - BOOL mIsLocalPool; EThreadStatus mStatus; U32 mID; - - //a local apr_pool for APRFile operations in this thread. If it exists, LLAPRFile::sAPRFilePoolp should not be used. - //Note: this pool is used by APRFile ONLY, do NOT use it for any other purposes. - // otherwise it will cause severe memory leaking!!! --bao - LLVolatileAPRPool *mLocalAPRFilePoolp ; + + friend void LLThreadLocalData::create(LLThread* threadp); + LLThreadLocalData* mThreadLocalData; void setQuitting(); @@ -137,7 +153,15 @@ protected: #define MUTEX_DEBUG (LL_DEBUG || LL_RELEASE_WITH_DEBUG_INFO) -class LL_COMMON_API LLMutex +#ifdef MUTEX_DEBUG +// We really shouldn't be using recursive locks. Make sure of that in debug mode. +#define MUTEX_FLAG APR_THREAD_MUTEX_UNNESTED +#else +// Use the fastest platform-optimal lock behavior (can be recursive or non-recursive). +#define MUTEX_FLAG APR_THREAD_MUTEX_DEFAULT +#endif + +class LL_COMMON_API LLMutexBase { public: typedef enum @@ -145,32 +169,73 @@ public: NO_THREAD = 0xFFFFFFFF } e_locking_thread; - LLMutex(apr_pool_t *apr_poolp); // NULL pool constructs a new pool for the mutex - virtual ~LLMutex(); - - void lock(); // blocks - void unlock(); - bool isLocked(); // non-blocking, but does do a lock/unlock so not free - U32 lockingThread() const; //get ID of locking thread - + LLMutexBase() ; + + void lock() ; + void unlock() ; + // Returns true if lock was obtained successfully. + bool trylock() { return !APR_STATUS_IS_EBUSY(apr_thread_mutex_trylock(mAPRMutexp)); } + + // non-blocking, but does do a lock/unlock so not free + bool isLocked() { bool is_not_locked = trylock(); if (is_not_locked) unlock(); return !is_not_locked; } + protected: - apr_thread_mutex_t *mAPRMutexp; + // mAPRMutexp is initialized and uninitialized in the derived class. + apr_thread_mutex_t* mAPRMutexp; mutable U32 mCount; mutable U32 mLockingThread; - - apr_pool_t *mAPRPoolp; - BOOL mIsLocalPool; - -#if MUTEX_DEBUG - std::map<U32, BOOL> mIsLocked; +}; + +class LL_COMMON_API LLMutex : public LLMutexBase +{ +public: + LLMutex(LLAPRPool& parent = LLThread::tldata().mRootPool) : mPool(parent) + { + apr_thread_mutex_create(&mAPRMutexp, MUTEX_FLAG, mPool()); + } + ~LLMutex() + { + llassert(!isLocked()); // better not be locked! + apr_thread_mutex_destroy(mAPRMutexp); + mAPRMutexp = NULL; + } + +protected: + LLAPRPool mPool; +}; + +#if APR_HAS_THREADS +// No need to use a root pool in this case. +typedef LLMutex LLMutexRootPool; +#else // APR_HAS_THREADS +class LL_COMMON_API LLMutexRootPool : public LLMutexBase +{ +public: + LLMutexRootPool(void) + { + apr_thread_mutex_create(&mAPRMutexp, MUTEX_FLAG, mRootPool()); + } + ~LLMutexRootPool() + { +#if APR_POOL_DEBUG + // It is allowed to destruct root pools from a different thread. + mRootPool.grab_ownership(); #endif + llassert(!isLocked()); + apr_thread_mutex_destroy(mAPRMutexp); + mAPRMutexp = NULL; + } + +protected: + LLAPRRootPool mRootPool; }; +#endif // APR_HAS_THREADS // Actually a condition/mutex pair (since each condition needs to be associated with a mutex). class LL_COMMON_API LLCondition : public LLMutex { public: - LLCondition(apr_pool_t *apr_poolp); // Defaults to global pool, could use the thread pool as well. + LLCondition(LLAPRPool& parent = LLThread::tldata().mRootPool); ~LLCondition(); void wait(); // blocks @@ -181,10 +246,10 @@ protected: apr_thread_cond_t *mAPRCondp; }; -class LLMutexLock +class LL_COMMON_API LLMutexLock { public: - LLMutexLock(LLMutex* mutex) + LLMutexLock(LLMutexBase* mutex) { mMutex = mutex; mMutex->lock(); @@ -194,7 +259,7 @@ public: mMutex->unlock(); } private: - LLMutex* mMutex; + LLMutexBase* mMutex; }; //============================================================================ diff --git a/indra/llcommon/llthreadsafequeue.cpp b/indra/llcommon/llthreadsafequeue.cpp index 8a73e632a9..05d24944f3 100644 --- a/indra/llcommon/llthreadsafequeue.cpp +++ b/indra/llcommon/llthreadsafequeue.cpp @@ -34,19 +34,11 @@ //----------------------------------------------------------------------------- -LLThreadSafeQueueImplementation::LLThreadSafeQueueImplementation(apr_pool_t * pool, unsigned int capacity): - mOwnsPool(pool == 0), - mPool(pool), +LLThreadSafeQueueImplementation::LLThreadSafeQueueImplementation(unsigned int capacity): mQueue(0) { - if(mOwnsPool) { - apr_status_t status = apr_pool_create(&mPool, 0); - if(status != APR_SUCCESS) throw LLThreadSafeQueueError("failed to allocate pool"); - } else { - ; // No op. - } - - apr_status_t status = apr_queue_create(&mQueue, capacity, mPool); + mPool.create(); + apr_status_t status = apr_queue_create(&mQueue, capacity, mPool()); if(status != APR_SUCCESS) throw LLThreadSafeQueueError("failed to allocate queue"); } @@ -59,7 +51,6 @@ LLThreadSafeQueueImplementation::~LLThreadSafeQueueImplementation() " elements;" << "memory will be leaked" << LL_ENDL; apr_queue_term(mQueue); } - if(mOwnsPool && (mPool != 0)) apr_pool_destroy(mPool); } diff --git a/indra/llcommon/llthreadsafequeue.h b/indra/llcommon/llthreadsafequeue.h index 58cac38769..43d0b396f2 100644 --- a/indra/llcommon/llthreadsafequeue.h +++ b/indra/llcommon/llthreadsafequeue.h @@ -30,9 +30,9 @@ #include <string> #include <stdexcept> +#include "llaprpool.h" -struct apr_pool_t; // From apr_pools.h class LLThreadSafeQueueImplementation; // See below. @@ -75,7 +75,7 @@ struct apr_queue_t; // From apr_queue.h class LL_COMMON_API LLThreadSafeQueueImplementation { public: - LLThreadSafeQueueImplementation(apr_pool_t * pool, unsigned int capacity); + LLThreadSafeQueueImplementation(unsigned int capacity); ~LLThreadSafeQueueImplementation(); void pushFront(void * element); bool tryPushFront(void * element); @@ -84,8 +84,7 @@ public: size_t size(); private: - bool mOwnsPool; - apr_pool_t * mPool; + LLAPRPool mPool; // The pool used for mQueue. apr_queue_t * mQueue; }; @@ -99,9 +98,8 @@ class LLThreadSafeQueue public: typedef ElementT value_type; - // If the pool is set to NULL one will be allocated and managed by this - // queue. - LLThreadSafeQueue(apr_pool_t * pool = 0, unsigned int capacity = 1024); + // Constructor. + LLThreadSafeQueue(unsigned int capacity = 1024); // Add an element to the front of queue (will block if the queue has // reached capacity). @@ -139,8 +137,8 @@ private: template<typename ElementT> -LLThreadSafeQueue<ElementT>::LLThreadSafeQueue(apr_pool_t * pool, unsigned int capacity): - mImplementation(pool, capacity) +LLThreadSafeQueue<ElementT>::LLThreadSafeQueue(unsigned int capacity) : + mImplementation(capacity) { ; // No op. } diff --git a/indra/llcommon/llworkerthread.cpp b/indra/llcommon/llworkerthread.cpp index 3ac50832fd..6b308bb917 100644 --- a/indra/llcommon/llworkerthread.cpp +++ b/indra/llcommon/llworkerthread.cpp @@ -37,12 +37,7 @@ LLWorkerThread::LLWorkerThread(const std::string& name, bool threaded) : LLQueuedThread(name, threaded) { - mDeleteMutex = new LLMutex(NULL); - - if(!mLocalAPRFilePoolp) - { - mLocalAPRFilePoolp = new LLVolatileAPRPool() ; - } + mDeleteMutex = new LLMutex; } LLWorkerThread::~LLWorkerThread() @@ -204,7 +199,6 @@ LLWorkerClass::LLWorkerClass(LLWorkerThread* workerthread, const std::string& na mWorkerClassName(name), mRequestHandle(LLWorkerThread::nullHandle()), mRequestPriority(LLWorkerThread::PRIORITY_NORMAL), - mMutex(NULL), mWorkFlags(0) { if (!mWorkerThread) diff --git a/indra/llcommon/llworkerthread.h b/indra/llcommon/llworkerthread.h index 9bff18303e..bef5ef53fe 100644 --- a/indra/llcommon/llworkerthread.h +++ b/indra/llcommon/llworkerthread.h @@ -94,7 +94,6 @@ public: private: void deleteWorker(LLWorkerClass* workerclass); // schedule for deletion - }; //============================================================================ @@ -194,7 +193,7 @@ protected: U32 mRequestPriority; // last priority set private: - LLMutex mMutex; + LLMutexRootPool mMutex; // Use LLMutexRootPool since this object is created and destructed by multiple threads. LLAtomicU32 mWorkFlags; }; |