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Diffstat (limited to 'indra/llfilesystem/lldiskcache.cpp')
-rw-r--r--indra/llfilesystem/lldiskcache.cpp120
1 files changed, 25 insertions, 95 deletions
diff --git a/indra/llfilesystem/lldiskcache.cpp b/indra/llfilesystem/lldiskcache.cpp
index 86b1e2ac81..e780387f4e 100644
--- a/indra/llfilesystem/lldiskcache.cpp
+++ b/indra/llfilesystem/lldiskcache.cpp
@@ -39,15 +39,25 @@
#include "lldiskcache.h"
+ /**
+ * The prefix inserted at the start of a cache file filename to
+ * help identify it as a cache file. It's probably not required
+ * (just the presence in the cache folder is enough) but I am
+ * paranoid about the cache folder being set to something bad
+ * like the users' OS system dir by mistake or maliciously and
+ * this will help to offset any damage if that happens.
+ */
+static const std::string CACHE_FILENAME_PREFIX("sl_cache");
+
+std::string LLDiskCache::sCacheDir;
+
LLDiskCache::LLDiskCache(const std::string cache_dir,
const uintmax_t max_size_bytes,
const bool enable_cache_debug_info) :
- mCacheDir(cache_dir),
mMaxSizeBytes(max_size_bytes),
mEnableCacheDebugInfo(enable_cache_debug_info)
{
- mCacheFilenamePrefix = "sl_cache";
-
+ sCacheDir = cache_dir;
LLFile::mkdir(cache_dir);
}
@@ -83,7 +93,7 @@ void LLDiskCache::purge()
{
if (mEnableCacheDebugInfo)
{
- LL_INFOS() << "Total dir size before purge is " << dirFileSize(mCacheDir) << LL_ENDL;
+ LL_INFOS() << "Total dir size before purge is " << dirFileSize(sCacheDir) << LL_ENDL;
}
boost::system::error_code ec;
@@ -93,9 +103,9 @@ void LLDiskCache::purge()
std::vector<file_info_t> file_info;
#if LL_WINDOWS
- std::wstring cache_path(utf8str_to_utf16str(mCacheDir));
+ std::wstring cache_path(utf8str_to_utf16str(sCacheDir));
#else
- std::string cache_path(mCacheDir);
+ std::string cache_path(sCacheDir);
#endif
if (boost::filesystem::is_directory(cache_path, ec) && !ec.failed())
{
@@ -104,7 +114,7 @@ void LLDiskCache::purge()
{
if (boost::filesystem::is_regular_file(*iter, ec) && !ec.failed())
{
- if ((*iter).path().string().find(mCacheFilenamePrefix) != std::string::npos)
+ if ((*iter).path().string().find(CACHE_FILENAME_PREFIX) != std::string::npos)
{
uintmax_t file_size = boost::filesystem::file_size(*iter, ec);
if (ec.failed())
@@ -181,7 +191,7 @@ void LLDiskCache::purge()
LL_INFOS() << line.str() << LL_ENDL;
}
- LL_INFOS() << "Total dir size after purge is " << dirFileSize(mCacheDir) << LL_ENDL;
+ LL_INFOS() << "Total dir size after purge is " << dirFileSize(sCacheDir) << LL_ENDL;
LL_INFOS() << "Cache purge took " << execute_time << " ms to execute for " << file_info.size() << " files" << LL_ENDL;
}
}
@@ -236,89 +246,9 @@ const std::string LLDiskCache::assetTypeToString(LLAssetType::EType at)
return std::string("UNKNOWN");
}
-const std::string LLDiskCache::metaDataToFilepath(const std::string id,
- LLAssetType::EType at,
- const std::string extra_info)
+const std::string LLDiskCache::metaDataToFilepath(const std::string& id, LLAssetType::EType at)
{
- std::ostringstream file_path;
-
- file_path << mCacheDir;
- file_path << gDirUtilp->getDirDelimiter();
- file_path << mCacheFilenamePrefix;
- file_path << "_";
- file_path << id;
- file_path << "_";
- file_path << (extra_info.empty() ? "0" : extra_info);
- //file_path << "_";
- //file_path << assetTypeToString(at); // see SL-14210 Prune descriptive tag from new cache filenames
- // for details of why it was removed. Note that if you put it
- // back or change the format of the filename, the cache files
- // files will be invalidated (and perhaps, more importantly,
- // never deleted unless you delete them manually).
- file_path << ".asset";
-
- return file_path.str();
-}
-
-void LLDiskCache::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
- */
- const 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;
- }
+ return llformat("%s%s%s_%s_0.asset", sCacheDir.c_str(), gDirUtilp->getDirDelimiter().c_str(), CACHE_FILENAME_PREFIX.c_str(), id.c_str());
}
const std::string LLDiskCache::getCacheInfo()
@@ -326,7 +256,7 @@ const std::string LLDiskCache::getCacheInfo()
std::ostringstream cache_info;
F32 max_in_mb = (F32)mMaxSizeBytes / (1024.0f * 1024.0f);
- F32 percent_used = ((F32)dirFileSize(mCacheDir) / (F32)mMaxSizeBytes) * 100.0f;
+ F32 percent_used = ((F32)dirFileSize(sCacheDir) / (F32)mMaxSizeBytes) * 100.0f;
cache_info << std::fixed;
cache_info << std::setprecision(1);
@@ -346,9 +276,9 @@ void LLDiskCache::clearCache()
*/
boost::system::error_code ec;
#if LL_WINDOWS
- std::wstring cache_path(utf8str_to_utf16str(mCacheDir));
+ std::wstring cache_path(utf8str_to_utf16str(sCacheDir));
#else
- std::string cache_path(mCacheDir);
+ std::string cache_path(sCacheDir);
#endif
if (boost::filesystem::is_directory(cache_path, ec) && !ec.failed())
{
@@ -357,7 +287,7 @@ void LLDiskCache::clearCache()
{
if (boost::filesystem::is_regular_file(*iter, ec) && !ec.failed())
{
- if ((*iter).path().string().find(mCacheFilenamePrefix) != std::string::npos)
+ if ((*iter).path().string().find(CACHE_FILENAME_PREFIX) != std::string::npos)
{
boost::filesystem::remove(*iter, ec);
if (ec.failed())
@@ -431,7 +361,7 @@ uintmax_t LLDiskCache::dirFileSize(const std::string dir)
{
if (boost::filesystem::is_regular_file(*iter, ec) && !ec.failed())
{
- if ((*iter).path().string().find(mCacheFilenamePrefix) != std::string::npos)
+ if ((*iter).path().string().find(CACHE_FILENAME_PREFIX) != std::string::npos)
{
uintmax_t file_size = boost::filesystem::file_size(*iter, ec);
if (!ec.failed())
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 10:59:26 +0000