diff options
Diffstat (limited to 'indra/llcommon/llthread.h')
| -rwxr-xr-x | indra/llcommon/llthread.h | 202 |
1 files changed, 11 insertions, 191 deletions
diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h index 8c7143304f..6f9ec10fd3 100755 --- a/indra/llcommon/llthread.h +++ b/indra/llcommon/llthread.h @@ -31,20 +31,20 @@ #include "llapr.h" #include "apr_thread_cond.h" #include "boost/intrusive_ptr.hpp" +#include "llmutex.h" +#include "llrefcount.h" -class LLThread; -class LLMutex; -class LLCondition; +LL_COMMON_API void assert_main_thread(); -#if LL_WINDOWS -#define ll_thread_local __declspec(thread) -#else -#define ll_thread_local __thread -#endif +namespace LLTrace +{ + class ThreadRecorder; +} class LL_COMMON_API LLThread { private: + friend class LLMutex; static U32 sIDIter; public: @@ -98,11 +98,11 @@ private: BOOL mPaused; // static function passed to APR thread creation routine - static void *APR_THREAD_FUNC staticRun(apr_thread_t *apr_threadp, void *datap); + static void *APR_THREAD_FUNC staticRun(struct apr_thread_t *apr_threadp, void *datap); protected: std::string mName; - LLCondition* mRunCondition; + class LLCondition* mRunCondition; LLMutex* mDataLock; apr_thread_t *mAPRThreadp; @@ -110,6 +110,7 @@ protected: BOOL mIsLocalPool; EThreadStatus mStatus; U32 mID; + LLTrace::ThreadRecorder* mRecorder; //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. @@ -140,117 +141,6 @@ protected: // mDataLock->unlock(); }; -//============================================================================ - -#define MUTEX_DEBUG (LL_DEBUG || LL_RELEASE_WITH_DEBUG_INFO) - -class LL_COMMON_API LLMutex -{ -public: - typedef enum - { - 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 - bool trylock(); // non-blocking, returns true if lock held. - void unlock(); // undefined behavior when called on mutex not being held - bool isLocked(); // non-blocking, but does do a lock/unlock so not free - bool isSelfLocked(); //return true if locked in a same thread - U32 lockingThread() const; //get ID of locking thread - -protected: - 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; -#endif -}; - -//============================================================================ - -// 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(); - - void wait(); // blocks - void signal(); - void broadcast(); - -protected: - apr_thread_cond_t *mAPRCondp; -}; - -//============================================================================ - -class LLMutexLock -{ -public: - LLMutexLock(LLMutex* mutex) - { - mMutex = mutex; - - if(mMutex) - mMutex->lock(); - } - ~LLMutexLock() - { - if(mMutex) - mMutex->unlock(); - } -private: - LLMutex* mMutex; -}; - -//============================================================================ - -// Scoped locking class similar in function to LLMutexLock but uses -// the trylock() method to conditionally acquire lock without -// blocking. Caller resolves the resulting condition by calling -// the isLocked() method and either punts or continues as indicated. -// -// Mostly of interest to callers needing to avoid stalls who can -// guarantee another attempt at a later time. - -class LLMutexTrylock -{ -public: - LLMutexTrylock(LLMutex* mutex) - : mMutex(mutex), - mLocked(false) - { - if (mMutex) - mLocked = mMutex->trylock(); - } - - ~LLMutexTrylock() - { - if (mMutex && mLocked) - mMutex->unlock(); - } - - bool isLocked() const - { - return mLocked; - } - -private: - LLMutex* mMutex; - bool mLocked; -}; - -//============================================================================ void LLThread::lockData() { @@ -265,76 +155,6 @@ void LLThread::unlockData() //============================================================================ -// see llmemory.h for LLPointer<> definition - -class LL_COMMON_API LLThreadSafeRefCount -{ -public: - static void initThreadSafeRefCount(); // creates sMutex - static void cleanupThreadSafeRefCount(); // destroys sMutex - -private: - static LLMutex* sMutex; - -protected: - virtual ~LLThreadSafeRefCount(); // use unref() - -public: - LLThreadSafeRefCount(); - LLThreadSafeRefCount(const LLThreadSafeRefCount&); - LLThreadSafeRefCount& operator=(const LLThreadSafeRefCount& ref) - { - mRef = 0; - return *this; - } - - void ref() - { - mRef++; - } - - void unref() - { - llassert(mRef >= 1); - if ((--mRef) == 0) // See note in llapr.h on atomic decrement operator return value. - { - // If we hit zero, the caller should be the only smart pointer owning the object and we can delete it. - // It is technically possible for a vanilla pointer to mess this up, or another thread to - // jump in, find this object, create another smart pointer and end up dangling, but if - // the code is that bad and not thread-safe, it's trouble already. - delete this; - } - } - - S32 getNumRefs() const - { - const S32 currentVal = mRef.CurrentValue(); - return currentVal; - } - -private: - LLAtomic32< S32 > mRef; -}; - - -/** - * intrusive pointer support for LLThreadSafeRefCount - * this allows you to use boost::intrusive_ptr with any LLThreadSafeRefCount-derived type - */ -namespace boost -{ - inline void intrusive_ptr_add_ref(LLThreadSafeRefCount* p) - { - p->ref(); - } - - inline void intrusive_ptr_release(LLThreadSafeRefCount* p) - { - p->unref(); - } -}; -//============================================================================ - // Simple responder for self destructing callbacks // Pure virtual class class LL_COMMON_API LLResponder : public LLThreadSafeRefCount |