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-rw-r--r--indra/llfilesystem/llfilesystem.cpp134
1 files changed, 83 insertions, 51 deletions
diff --git a/indra/llfilesystem/llfilesystem.cpp b/indra/llfilesystem/llfilesystem.cpp
index 7d2a6bd6f5..c8ce9531c2 100644
--- a/indra/llfilesystem/llfilesystem.cpp
+++ b/indra/llfilesystem/llfilesystem.cpp
@@ -34,10 +34,12 @@
#include "llfasttimer.h"
#include "lldiskcache.h"
-const S32 LLFileSystem::READ = 0x00000001;
-const S32 LLFileSystem::WRITE = 0x00000002;
-const S32 LLFileSystem::READ_WRITE = 0x00000003; // LLFileSystem::READ & LLFileSystem::WRITE
-const S32 LLFileSystem::APPEND = 0x00000006; // 0x00000004 & LLFileSystem::WRITE
+#include "boost/filesystem.hpp"
+
+constexpr S32 LLFileSystem::READ = 0x00000001;
+constexpr S32 LLFileSystem::WRITE = 0x00000002;
+constexpr S32 LLFileSystem::READ_WRITE = 0x00000003; // LLFileSystem::READ & LLFileSystem::WRITE
+constexpr S32 LLFileSystem::APPEND = 0x00000006; // 0x00000004 & LLFileSystem::WRITE
static LLTrace::BlockTimerStatHandle FTM_VFILE_WAIT("VFile Wait");
@@ -55,10 +57,7 @@ LLFileSystem::LLFileSystem(const LLUUID& file_id, const LLAssetType::EType file_
if (mode == LLFileSystem::READ)
{
// build the filename (TODO: we do this in a few places - perhaps we should factor into a single function)
- std::string id;
- mFileID.toString(id);
- const std::string extra_info = "";
- const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id, mFileType, extra_info);
+ const std::string filename = LLDiskCache::metaDataToFilepath(mFileID, mFileType);
// update the last access time for the file if it exists - this is required
// even though we are reading and not writing because this is the
@@ -67,23 +66,16 @@ LLFileSystem::LLFileSystem(const LLUUID& file_id, const LLAssetType::EType file_
bool exists = gDirUtilp->fileExists(filename);
if (exists)
{
- LLDiskCache::getInstance()->updateFileAccessTime(filename);
+ updateFileAccessTime(filename);
}
}
}
-LLFileSystem::~LLFileSystem()
-{
-}
-
// static
bool LLFileSystem::getExists(const LLUUID& file_id, const LLAssetType::EType file_type)
{
LL_PROFILE_ZONE_SCOPED;
- std::string id_str;
- file_id.toString(id_str);
- const std::string extra_info = "";
- const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, file_type, extra_info);
+ const std::string filename = LLDiskCache::metaDataToFilepath(file_id, file_type);
llifstream file(filename, std::ios::binary);
if (file.is_open())
@@ -97,10 +89,7 @@ bool LLFileSystem::getExists(const LLUUID& file_id, const LLAssetType::EType fil
// static
bool LLFileSystem::removeFile(const LLUUID& file_id, const LLAssetType::EType file_type, int suppress_error /*= 0*/)
{
- std::string id_str;
- file_id.toString(id_str);
- const std::string extra_info = "";
- const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, file_type, extra_info);
+ const std::string filename = LLDiskCache::metaDataToFilepath(file_id, file_type);
LLFile::remove(filename.c_str(), suppress_error);
@@ -111,14 +100,8 @@ bool LLFileSystem::removeFile(const LLUUID& file_id, const LLAssetType::EType fi
bool LLFileSystem::renameFile(const LLUUID& old_file_id, const LLAssetType::EType old_file_type,
const LLUUID& new_file_id, const LLAssetType::EType new_file_type)
{
- std::string old_id_str;
- old_file_id.toString(old_id_str);
- const std::string extra_info = "";
- const std::string old_filename = LLDiskCache::getInstance()->metaDataToFilepath(old_id_str, old_file_type, extra_info);
-
- std::string new_id_str;
- new_file_id.toString(new_id_str);
- const std::string new_filename = LLDiskCache::getInstance()->metaDataToFilepath(new_id_str, new_file_type, extra_info);
+ const std::string old_filename = LLDiskCache::metaDataToFilepath(old_file_id, old_file_type);
+ const std::string new_filename = LLDiskCache::metaDataToFilepath(new_file_id, new_file_type);
// Rename needs the new file to not exist.
LLFileSystem::removeFile(new_file_id, new_file_type, ENOENT);
@@ -129,7 +112,7 @@ bool LLFileSystem::renameFile(const LLUUID& old_file_id, const LLAssetType::ETyp
// failed but the original code does not and doing so seems to
// break a lot of things so we go with the flow...
//return false;
- LL_WARNS() << "Failed to rename " << old_file_id << " to " << new_id_str << " reason: " << strerror(errno) << LL_ENDL;
+ LL_WARNS() << "Failed to rename " << old_file_id << " to " << new_file_id << " reason: " << strerror(errno) << LL_ENDL;
}
return true;
@@ -138,10 +121,7 @@ bool LLFileSystem::renameFile(const LLUUID& old_file_id, const LLAssetType::ETyp
// static
S32 LLFileSystem::getFileSize(const LLUUID& file_id, const LLAssetType::EType file_type)
{
- std::string id_str;
- file_id.toString(id_str);
- const std::string extra_info = "";
- const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, file_type, extra_info);
+ const std::string filename = LLDiskCache::metaDataToFilepath(file_id, file_type);
S32 file_size = 0;
llifstream file(filename, std::ios::binary);
@@ -158,10 +138,7 @@ bool LLFileSystem::read(U8* buffer, S32 bytes)
{
bool success = false;
- std::string id;
- mFileID.toString(id);
- const std::string extra_info = "";
- const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id, mFileType, extra_info);
+ const std::string filename = LLDiskCache::metaDataToFilepath(mFileID, mFileType);
llifstream file(filename, std::ios::binary);
if (file.is_open())
@@ -191,22 +168,19 @@ bool LLFileSystem::read(U8* buffer, S32 bytes)
return success;
}
-S32 LLFileSystem::getLastBytesRead()
+S32 LLFileSystem::getLastBytesRead() const
{
return mBytesRead;
}
-bool LLFileSystem::eof()
+bool LLFileSystem::eof() const
{
return mPosition >= getSize();
}
bool LLFileSystem::write(const U8* buffer, S32 bytes)
{
- std::string id_str;
- mFileID.toString(id_str);
- const std::string extra_info = "";
- const std::string filename = LLDiskCache::getInstance()->metaDataToFilepath(id_str, mFileType, extra_info);
+ const std::string filename = LLDiskCache::metaDataToFilepath(mFileID, mFileType);
bool success = false;
@@ -217,12 +191,11 @@ bool LLFileSystem::write(const U8* buffer, S32 bytes)
{
ofs.write((const char*)buffer, bytes);
- mPosition = (S32)ofs.tellp(); // <FS:Ansariel> Fix asset caching
+ mPosition = (S32)ofs.tellp();
success = true;
}
}
- // <FS:Ansariel> Fix asset caching
else if (mMode == READ_WRITE)
{
// Don't truncate if file already exists
@@ -246,7 +219,6 @@ bool LLFileSystem::write(const U8* buffer, S32 bytes)
}
}
}
- // </FS:Ansariel>
else
{
llofstream ofs(filename, std::ios::binary);
@@ -298,12 +270,12 @@ S32 LLFileSystem::tell() const
return mPosition;
}
-S32 LLFileSystem::getSize()
+S32 LLFileSystem::getSize() const
{
return LLFileSystem::getFileSize(mFileID, mFileType);
}
-S32 LLFileSystem::getMaxSize()
+S32 LLFileSystem::getMaxSize() const
{
// offer up a huge size since we don't care what the max is
return INT_MAX;
@@ -319,9 +291,69 @@ bool LLFileSystem::rename(const LLUUID& new_id, const LLAssetType::EType new_typ
return true;
}
-bool LLFileSystem::remove()
+bool LLFileSystem::remove() const
{
LLFileSystem::removeFile(mFileID, mFileType);
-
return true;
}
+
+void LLFileSystem::updateFileAccessTime(const std::string& file_path)
+{
+ /**
+ * Threshold in time_t units that is used to decide if the last access time
+ * time of the file is updated or not. Added as a precaution for the concern
+ * outlined in SL-14582 about frequent writes on older SSDs reducing their
+ * lifespan. I think this is the right place for the threshold value - rather
+ * than it being a pref - do comment on that Jira if you disagree...
+ *
+ * Let's start with 1 hour in time_t units and see how that unfolds
+ */
+ constexpr std::time_t time_threshold = 1 * 60 * 60;
+
+ // current time
+ const std::time_t cur_time = std::time(nullptr);
+
+ boost::system::error_code ec;
+#if LL_WINDOWS
+ // file last write time
+ const std::time_t last_write_time = boost::filesystem::last_write_time(utf8str_to_utf16str(file_path), ec);
+ if (ec.failed())
+ {
+ LL_WARNS() << "Failed to read last write time for cache file " << file_path << ": " << ec.message() << LL_ENDL;
+ return;
+ }
+
+ // delta between cur time and last time the file was written
+ const std::time_t delta_time = cur_time - last_write_time;
+
+ // we only write the new value if the time in time_threshold has elapsed
+ // before the last one
+ if (delta_time > time_threshold)
+ {
+ boost::filesystem::last_write_time(utf8str_to_utf16str(file_path), cur_time, ec);
+ }
+#else
+ // file last write time
+ const std::time_t last_write_time = boost::filesystem::last_write_time(file_path, ec);
+ if (ec.failed())
+ {
+ LL_WARNS() << "Failed to read last write time for cache file " << file_path << ": " << ec.message() << LL_ENDL;
+ return;
+ }
+
+ // delta between cur time and last time the file was written
+ const std::time_t delta_time = cur_time - last_write_time;
+
+ // we only write the new value if the time in time_threshold has elapsed
+ // before the last one
+ if (delta_time > time_threshold)
+ {
+ boost::filesystem::last_write_time(file_path, cur_time, ec);
+ }
+#endif
+
+ if (ec.failed())
+ {
+ LL_WARNS() << "Failed to update last write time for cache file " << file_path << ": " << ec.message() << LL_ENDL;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 14:40:15 +0000