604 lines
24 KiB
C++
604 lines
24 KiB
C++
/**
|
||
* @file lldiskcache.cpp
|
||
* @brief The disk cache implementation.
|
||
*
|
||
* Note: Rather than keep the top level function comments up
|
||
* to date in both the source and header files, I elected to
|
||
* only have explicit comments about each function and variable
|
||
* in the header - look there for details. The same is true for
|
||
* description of how this code is supposed to work.
|
||
*
|
||
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
|
||
* Second Life Viewer Source Code
|
||
* Copyright (C) 2020, 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
|
||
* $/LicenseInfo$
|
||
*/
|
||
|
||
#include "linden_common.h"
|
||
#include "llapp.h"
|
||
#include "llassettype.h"
|
||
#include "lldir.h"
|
||
#include <boost/filesystem.hpp>
|
||
#include <boost/range/iterator_range.hpp>
|
||
#include <chrono>
|
||
|
||
#include "lldiskcache.h"
|
||
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
static const char* subdirs = "0123456789abcdef";
|
||
|
||
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";
|
||
|
||
LLFile::mkdir(cache_dir);
|
||
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
for (S32 i = 0; i < 16; i++)
|
||
{
|
||
std::string dirname = cache_dir + gDirUtilp->getDirDelimiter() + subdirs[i];
|
||
LLFile::mkdir(dirname);
|
||
}
|
||
// </FS:Ansariel>
|
||
// <FS:Beq> add static assets into the new cache after clear.
|
||
// Only missing entries are copied on init, skiplist is setup
|
||
// For everything we populate FS specific assets to allow future updates
|
||
prepopulateCacheWithStatic();
|
||
// </FS:Beq>
|
||
}
|
||
|
||
// WARNING: purge() is called by LLPurgeDiskCacheThread. As such it must
|
||
// NOT touch any LLDiskCache data without introducing and locking a mutex!
|
||
|
||
// Interaction through the filesystem itself should be safe. Let’s say thread
|
||
// A is accessing the cache file for reading/writing and thread B is trimming
|
||
// the cache. Let’s also assume using llifstream to open a file and
|
||
// boost::filesystem::remove are not atomic (which will be pretty much the
|
||
// case).
|
||
|
||
// Now, A is trying to open the file using llifstream ctor. It does some
|
||
// checks if the file exists and whatever else it might be doing, but has not
|
||
// issued the call to the OS to actually open the file yet. Now B tries to
|
||
// delete the file: If the file has been already marked as in use by the OS,
|
||
// deleting the file will fail and B will continue with the next file. A can
|
||
// safely continue opening the file. If the file has not yet been marked as in
|
||
// use, B will delete the file. Now A actually wants to open it, operation
|
||
// will fail, subsequent check via llifstream.is_open will fail, asset will
|
||
// have to be re-requested. (Assuming here the viewer will actually handle
|
||
// this situation properly, that can also happen if there is a file containing
|
||
// garbage.)
|
||
|
||
// Other situation: B is trimming the cache and A wants to read a file that is
|
||
// about to get deleted. boost::filesystem::remove does whatever it is doing
|
||
// before actually deleting the file. If A opens the file before the file is
|
||
// actually gone, the OS call from B to delete the file will fail since the OS
|
||
// will prevent this. B continues with the next file. If the file is already
|
||
// gone before A finally gets to open it, this operation will fail and the
|
||
// asset will have to be re-requested.
|
||
void LLDiskCache::purge()
|
||
{
|
||
if (mEnableCacheDebugInfo)
|
||
{
|
||
LL_INFOS() << "Total dir size before purge is " << dirFileSize(mCacheDir) << LL_ENDL;
|
||
}
|
||
|
||
boost::system::error_code ec;
|
||
auto start_time = std::chrono::high_resolution_clock::now();
|
||
|
||
typedef std::pair<std::time_t, std::pair<uintmax_t, std::string>> file_info_t;
|
||
std::vector<file_info_t> file_info;
|
||
|
||
#if LL_WINDOWS
|
||
std::wstring cache_path(utf8str_to_utf16str(mCacheDir));
|
||
#else
|
||
std::string cache_path(mCacheDir);
|
||
#endif
|
||
if (boost::filesystem::is_directory(cache_path, ec) && !ec.failed())
|
||
{
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
//for (auto& entry : boost::make_iterator_range(boost::filesystem::directory_iterator(cache_path, ec), {}))
|
||
for (auto& entry : boost::make_iterator_range(boost::filesystem::recursive_directory_iterator(cache_path, ec), {}))
|
||
{
|
||
if (!ec.failed() && (boost::filesystem::is_regular_file(entry, ec) && !ec.failed()))
|
||
{
|
||
if (entry.path().string().find(mCacheFilenamePrefix) != std::string::npos)
|
||
{
|
||
uintmax_t file_size = boost::filesystem::file_size(entry, ec);
|
||
if (ec.failed())
|
||
{
|
||
continue;
|
||
}
|
||
const std::string file_path = entry.path().string();
|
||
const std::time_t file_time = boost::filesystem::last_write_time(entry, ec);
|
||
if (ec.failed())
|
||
{
|
||
continue;
|
||
}
|
||
|
||
file_info.push_back(file_info_t(file_time, { file_size, file_path }));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
std::sort(file_info.begin(), file_info.end(), [](file_info_t& x, file_info_t& y)
|
||
{
|
||
return x.first > y.first;
|
||
});
|
||
|
||
LL_INFOS() << "Purging cache to a maximum of " << mMaxSizeBytes << " bytes" << LL_ENDL;
|
||
|
||
// <FS:Beq> Extra accounting to track the retention of static assets
|
||
//std::vector<bool> file_removed;
|
||
std::vector<S32> file_removed;
|
||
int keep{0};
|
||
int del{0};
|
||
int skip{0};
|
||
// </FS:Beq>
|
||
if (mEnableCacheDebugInfo)
|
||
{
|
||
file_removed.reserve(file_info.size());
|
||
}
|
||
uintmax_t file_size_total = 0;
|
||
for (file_info_t& entry : file_info)
|
||
{
|
||
file_size_total += entry.second.first;
|
||
|
||
bool should_remove = file_size_total > mMaxSizeBytes;
|
||
// <FS> Make sure static assets are not eliminated
|
||
S32 action{ should_remove ? 0 : 1 };
|
||
if (should_remove)
|
||
{
|
||
auto uuid_as_string = gDirUtilp->getBaseFileName(entry.second.second, true);
|
||
uuid_as_string = uuid_as_string.substr(mCacheFilenamePrefix.size() + 1, 36);// skip "sl_cache_" and trailing "_N"
|
||
// LL_INFOS() << "checking UUID=" <<uuid_as_string<< LL_ENDL;
|
||
if (std::find(mSkipList.begin(), mSkipList.end(), uuid_as_string) != mSkipList.end())
|
||
{
|
||
// this is one of our protected items so no purging
|
||
should_remove = false;
|
||
action = 2;
|
||
updateFileAccessTime(entry.second.second); // force these to the front of the list next time so that purge size works
|
||
}
|
||
}
|
||
// </FS>
|
||
if (mEnableCacheDebugInfo)
|
||
{
|
||
// <FS> Static asset stuff
|
||
//file_removed.push_back(should_remove);
|
||
file_removed.push_back(action);
|
||
}
|
||
if (should_remove)
|
||
{
|
||
boost::filesystem::remove(entry.second.second, ec);
|
||
if (ec.failed())
|
||
{
|
||
LL_WARNS() << "Failed to delete cache file " << entry.second.second << ": " << ec.message() << LL_ENDL;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (mEnableCacheDebugInfo)
|
||
{
|
||
auto end_time = std::chrono::high_resolution_clock::now();
|
||
auto execute_time = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time).count();
|
||
|
||
// Log afterward so it doesn't affect the time measurement
|
||
// Logging thousands of file results can take hundreds of milliseconds
|
||
for (size_t i = 0; i < file_info.size(); ++i)
|
||
{
|
||
const file_info_t& entry = file_info[i];
|
||
// <FS> Static asset stuff
|
||
//const bool removed = file_removed[i];
|
||
//const std::string action = removed ? "DELETE:" : "KEEP:";
|
||
std::string action{};
|
||
switch (file_removed[i])
|
||
{
|
||
default:
|
||
case 0:
|
||
action = "KEEP";
|
||
keep++;
|
||
break;
|
||
case 1:
|
||
action = "DELETE";
|
||
del++;
|
||
break;
|
||
case 2:
|
||
action = "STATIC";
|
||
skip++;
|
||
break;
|
||
}
|
||
// </FS>
|
||
|
||
// have to do this because of LL_INFO/LL_END weirdness
|
||
std::ostringstream line;
|
||
|
||
line << action << " ";
|
||
line << entry.first << " ";
|
||
line << entry.second.first << " ";
|
||
line << entry.second.second;
|
||
line << " (" << file_size_total << "/" << mMaxSizeBytes << ")";
|
||
LL_INFOS() << line.str() << LL_ENDL;
|
||
}
|
||
|
||
LL_INFOS() << "Total dir size after purge is " << dirFileSize(mCacheDir) << LL_ENDL;
|
||
LL_INFOS() << "Cache purge took " << execute_time << " ms to execute for " << file_info.size() << " files" << LL_ENDL;
|
||
LL_INFOS() << "Deleted: " << del << " Skipped: " << skip << " Kept: " << keep << LL_ENDL; // <FS:Beq/> Extra accounting to track the retention of static assets
|
||
}
|
||
}
|
||
|
||
const std::string LLDiskCache::assetTypeToString(LLAssetType::EType at)
|
||
{
|
||
/**
|
||
* Make use of the handy C++17 feature that allows
|
||
* for inline initialization of an std::map<>
|
||
*/
|
||
typedef std::map<LLAssetType::EType, std::string> asset_type_to_name_t;
|
||
asset_type_to_name_t asset_type_to_name =
|
||
{
|
||
{ LLAssetType::AT_TEXTURE, "TEXTURE" },
|
||
{ LLAssetType::AT_SOUND, "SOUND" },
|
||
{ LLAssetType::AT_CALLINGCARD, "CALLINGCARD" },
|
||
{ LLAssetType::AT_LANDMARK, "LANDMARK" },
|
||
{ LLAssetType::AT_SCRIPT, "SCRIPT" },
|
||
{ LLAssetType::AT_CLOTHING, "CLOTHING" },
|
||
{ LLAssetType::AT_OBJECT, "OBJECT" },
|
||
{ LLAssetType::AT_NOTECARD, "NOTECARD" },
|
||
{ LLAssetType::AT_CATEGORY, "CATEGORY" },
|
||
{ LLAssetType::AT_LSL_TEXT, "LSL_TEXT" },
|
||
{ LLAssetType::AT_LSL_BYTECODE, "LSL_BYTECODE" },
|
||
{ LLAssetType::AT_TEXTURE_TGA, "TEXTURE_TGA" },
|
||
{ LLAssetType::AT_BODYPART, "BODYPART" },
|
||
{ LLAssetType::AT_SOUND_WAV, "SOUND_WAV" },
|
||
{ LLAssetType::AT_IMAGE_TGA, "IMAGE_TGA" },
|
||
{ LLAssetType::AT_IMAGE_JPEG, "IMAGE_JPEG" },
|
||
{ LLAssetType::AT_ANIMATION, "ANIMATION" },
|
||
{ LLAssetType::AT_GESTURE, "GESTURE" },
|
||
{ LLAssetType::AT_SIMSTATE, "SIMSTATE" },
|
||
{ LLAssetType::AT_LINK, "LINK" },
|
||
{ LLAssetType::AT_LINK_FOLDER, "LINK_FOLDER" },
|
||
{ LLAssetType::AT_MARKETPLACE_FOLDER, "MARKETPLACE_FOLDER" },
|
||
{ LLAssetType::AT_WIDGET, "WIDGET" },
|
||
{ LLAssetType::AT_PERSON, "PERSON" },
|
||
{ LLAssetType::AT_MESH, "MESH" },
|
||
{ LLAssetType::AT_SETTINGS, "SETTINGS" },
|
||
{ LLAssetType::AT_UNKNOWN, "UNKNOWN" }
|
||
};
|
||
|
||
asset_type_to_name_t::iterator iter = asset_type_to_name.find(at);
|
||
if (iter != asset_type_to_name.end())
|
||
{
|
||
return iter->second;
|
||
}
|
||
|
||
return std::string("UNKNOWN");
|
||
}
|
||
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
//const std::string LLDiskCache::metaDataToFilepath(const std::string id,
|
||
// LLAssetType::EType at,
|
||
// const std::string extra_info)
|
||
//{
|
||
// 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();
|
||
//}
|
||
const std::string LLDiskCache::metaDataToFilepath(const std::string& id,
|
||
LLAssetType::EType at,
|
||
const std::string& extra_info)
|
||
{
|
||
return llformat("%s%s%c%s%s_%s_%s.asset", mCacheDir.c_str(), gDirUtilp->getDirDelimiter().c_str(), id[0], gDirUtilp->getDirDelimiter().c_str(), mCacheFilenamePrefix.c_str(), id.c_str(), (extra_info.empty() ? "0" : extra_info).c_str());
|
||
}
|
||
// </FS:Ansariel>
|
||
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
//void LLDiskCache::updateFileAccessTime(const std::string file_path)
|
||
void LLDiskCache::updateFileAccessTime(const std::string& file_path)
|
||
// </FS:Ansariel>
|
||
{
|
||
/**
|
||
* 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;
|
||
}
|
||
}
|
||
|
||
const std::string LLDiskCache::getCacheInfo()
|
||
{
|
||
std::ostringstream cache_info;
|
||
|
||
F32 max_in_mb = (F32)mMaxSizeBytes / (1024.0 * 1024.0);
|
||
F32 percent_used = ((F32)dirFileSize(mCacheDir) / (F32)mMaxSizeBytes) * 100.0;
|
||
|
||
cache_info << std::fixed;
|
||
cache_info << std::setprecision(1);
|
||
cache_info << "Max size " << max_in_mb << " MB ";
|
||
cache_info << "(" << percent_used << "% used)";
|
||
|
||
return cache_info.str();
|
||
}
|
||
|
||
// <FS:Beq> Copy static items into cache and add to the skip list that prevents their purging
|
||
// Note that there is no de-duplication nor other validation of the list.
|
||
void LLDiskCache::prepopulateCacheWithStatic()
|
||
{
|
||
mSkipList.clear();
|
||
|
||
std::vector<std::string> from_folders;
|
||
from_folders.emplace_back(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "fs_static_assets"));
|
||
#ifdef OPENSIM
|
||
from_folders.emplace_back(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "static_assets"));
|
||
#endif
|
||
|
||
for (const auto& from_folder : from_folders)
|
||
{
|
||
if (gDirUtilp->fileExists(from_folder))
|
||
{
|
||
auto assets_to_copy = gDirUtilp->getFilesInDir(from_folder);
|
||
for (auto from_asset_file : assets_to_copy)
|
||
{
|
||
from_asset_file = from_folder + gDirUtilp->getDirDelimiter() + from_asset_file;
|
||
// we store static assets as UUID.asset_type the asset_type is not used in the current simple cache format
|
||
auto uuid_as_string{ gDirUtilp->getBaseFileName(from_asset_file, true) };
|
||
auto to_asset_file = metaDataToFilepath(uuid_as_string, LLAssetType::AT_UNKNOWN, std::string());
|
||
if (!gDirUtilp->fileExists(to_asset_file))
|
||
{
|
||
if (mEnableCacheDebugInfo)
|
||
{
|
||
LL_INFOS("LLDiskCache") << "Copying static asset " << from_asset_file << " to cache from " << from_folder << LL_ENDL;
|
||
}
|
||
if (!LLFile::copy(from_asset_file, to_asset_file))
|
||
{
|
||
LL_WARNS("LLDiskCache") << "Failed to copy " << from_asset_file << " to " << to_asset_file << LL_ENDL;
|
||
}
|
||
}
|
||
if (std::find(mSkipList.begin(), mSkipList.end(), uuid_as_string) == mSkipList.end())
|
||
{
|
||
if (mEnableCacheDebugInfo)
|
||
{
|
||
LL_INFOS("LLDiskCache") << "Adding " << uuid_as_string << " to skip list" << LL_ENDL;
|
||
}
|
||
mSkipList.emplace_back(uuid_as_string);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
// </FS:Beq>
|
||
|
||
void LLDiskCache::clearCache()
|
||
{
|
||
LL_INFOS() << "clearing cache " << mCacheDir << LL_ENDL;
|
||
/**
|
||
* See notes on performance in dirFileSize(..) - there may be
|
||
* a quicker way to do this by operating on the parent dir vs
|
||
* the component files but it's called infrequently so it's
|
||
* likely just fine
|
||
*/
|
||
boost::system::error_code ec;
|
||
#if LL_WINDOWS
|
||
std::wstring cache_path(utf8str_to_utf16str(mCacheDir));
|
||
#else
|
||
std::string cache_path(mCacheDir);
|
||
#endif
|
||
if (boost::filesystem::is_directory(cache_path, ec) && !ec.failed())
|
||
{
|
||
LL_INFOS() << "is a directory: " << mCacheDir << LL_ENDL;
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
//for (auto& entry : boost::make_iterator_range(boost::filesystem::directory_iterator(cache_path, ec), {}))
|
||
// <FS:TS> FIRE-31070: Crash on clearing cache on macOS and Linux
|
||
// On Unix-like operating systems, the recursive_directory_iterator gets very unhappy if you
|
||
// delete a file out from under it in a for loop. This restructuring to a while loop and
|
||
// manually incrementing the iterator avoids the problem. Note that the iterator must be
|
||
// incremented *before* deleting the file.
|
||
boost::filesystem::recursive_directory_iterator entry(cache_path, ec);
|
||
boost::filesystem::recursive_directory_iterator cache_end;
|
||
while (entry != cache_end)
|
||
{
|
||
const boost::filesystem::path& remove_entry = entry->path();
|
||
if (boost::filesystem::is_regular_file(remove_entry, ec) && !ec.failed())
|
||
{
|
||
if (remove_entry.string().find(mCacheFilenamePrefix) != std::string::npos)
|
||
{
|
||
const boost::filesystem::path remove_path = remove_entry;
|
||
++entry;
|
||
boost::filesystem::remove(remove_path, ec);
|
||
if (ec.failed())
|
||
{
|
||
LL_WARNS() << "Failed to delete cache file " << remove_path.string() << ": " << ec.message() << LL_ENDL;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
++entry;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
++entry;
|
||
}
|
||
// </FS:TS> FIRE-31070
|
||
}
|
||
// <FS:Beq> add static assets into the new cache after clear
|
||
LL_INFOS() << "prepopulating new cache " << LL_ENDL;
|
||
prepopulateCacheWithStatic();
|
||
}
|
||
LL_INFOS() << "Cleared cache " << mCacheDir << LL_ENDL;
|
||
}
|
||
|
||
void LLDiskCache::removeOldVFSFiles()
|
||
{
|
||
//VFS files won't be created, so consider removing this code later
|
||
static const char CACHE_FORMAT[] = "inv.llsd";
|
||
static const char DB_FORMAT[] = "db2.x";
|
||
|
||
boost::system::error_code ec;
|
||
#if LL_WINDOWS
|
||
std::wstring cache_path(utf8str_to_utf16str(gDirUtilp->getExpandedFilename(LL_PATH_CACHE, "")));
|
||
#else
|
||
std::string cache_path(gDirUtilp->getExpandedFilename(LL_PATH_CACHE, ""));
|
||
#endif
|
||
if (boost::filesystem::is_directory(cache_path, ec) && !ec.failed())
|
||
{
|
||
for (auto& entry : boost::make_iterator_range(boost::filesystem::directory_iterator(cache_path, ec), {}))
|
||
{
|
||
if (boost::filesystem::is_regular_file(entry, ec) && !ec.failed())
|
||
{
|
||
if ((entry.path().string().find(CACHE_FORMAT) != std::string::npos) ||
|
||
(entry.path().string().find(DB_FORMAT) != std::string::npos))
|
||
{
|
||
boost::filesystem::remove(entry, ec);
|
||
if (ec.failed())
|
||
{
|
||
LL_WARNS() << "Failed to delete cache file " << entry << ": " << ec.message() << LL_ENDL;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
uintmax_t LLDiskCache::dirFileSize(const std::string dir)
|
||
{
|
||
uintmax_t total_file_size = 0;
|
||
|
||
/**
|
||
* There may be a better way that works directly on the folder (similar to
|
||
* right clicking on a folder in the OS and asking for size vs right clicking
|
||
* on all files and adding up manually) but this is very fast - less than 100ms
|
||
* for 10,000 files in my testing so, so long as it's not called frequently,
|
||
* it should be okay. Note that's it's only currently used for logging/debugging
|
||
* so if performance is ever an issue, optimizing this or removing it altogether,
|
||
* is an easy win.
|
||
*/
|
||
boost::system::error_code ec;
|
||
#if LL_WINDOWS
|
||
std::wstring dir_path(utf8str_to_utf16str(dir));
|
||
#else
|
||
std::string dir_path(dir);
|
||
#endif
|
||
if (boost::filesystem::is_directory(dir_path, ec) && !ec.failed())
|
||
{
|
||
// <FS:Ansariel> Optimize asset simple disk cache
|
||
//for (auto& entry : boost::make_iterator_range(boost::filesystem::directory_iterator(dir_path, ec), {}))
|
||
for (auto& entry : boost::make_iterator_range(boost::filesystem::recursive_directory_iterator(dir_path, ec), {}))
|
||
{
|
||
if (!ec.failed() && (boost::filesystem::is_regular_file(entry, ec) && !ec.failed()))
|
||
{
|
||
if (entry.path().string().find(mCacheFilenamePrefix) != std::string::npos)
|
||
{
|
||
uintmax_t file_size = boost::filesystem::file_size(entry, ec);
|
||
if (!ec.failed())
|
||
{
|
||
total_file_size += file_size;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return total_file_size;
|
||
}
|
||
|
||
LLPurgeDiskCacheThread::LLPurgeDiskCacheThread() :
|
||
LLThread("PurgeDiskCacheThread", nullptr)
|
||
{
|
||
}
|
||
|
||
void LLPurgeDiskCacheThread::run()
|
||
{
|
||
constexpr std::chrono::seconds CHECK_INTERVAL{60};
|
||
|
||
while (LLApp::instance()->sleep(CHECK_INTERVAL))
|
||
{
|
||
LLDiskCache::instance().purge();
|
||
}
|
||
}
|