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Code Issues Projects Releases Packages Wiki Activity Actions 5

renderer/loader: improve thread safety

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activeLoaders can be accessed by loaders within the worker thread.

the issue came up with the Loader cache feature:
ff6ea4b6c4

Issue: https://github.com/thorvg/thorvg/issues/1874
This commit is contained in:
Hermet Park 2023-12-29 12:05:37 +09:00 • committed by Hermet Park
parent ea4662a927
commit 217c53e823
1 changed files with 21 additions and 4 deletions
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17
src/renderer/tvgLoader.cpp
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@ -63,6 +63,7 @@ uint64_t HASH_KEY(const char* data, uint64_t size)
/* Internal Class Implementation */
/************************************************************************/
static mutex mtx;
static Inlist<LoadModule> _activeLoaders;
@ -208,6 +209,8 @@ static LoadModule* _findByType(const string& mimeType)
static LoadModule* _findFromCache(const string& path)
{
unique_lock<mutex> lock{mtx};
auto loader = _activeLoaders.head;
while (loader) {
@ -226,6 +229,7 @@ static LoadModule* _findFromCache(const char* data, uint32_t size, const string&
auto type = _convert(mimeType);
if (type == FileType::Unknown) return nullptr;
unique_lock<mutex> lock{mtx};
auto loader = _activeLoaders.head;
auto key = HASH_KEY(data, size);
@ -272,7 +276,10 @@ bool LoaderMgr::retrieve(LoadModule* loader)
{
if (!loader) return false;
if (loader->close()) {
{
unique_lock<mutex> lock{mtx};
_activeLoaders.remove(loader);
}
delete(loader);
}
return true;
@ -288,7 +295,10 @@ LoadModule* LoaderMgr::loader(const string& path, bool* invalid)
if (auto loader = _findByPath(path)) {
if (loader->open(path)) {
loader->hashpath = strdup(path.c_str());
{
unique_lock<mutex> lock{mtx};
_activeLoaders.back(loader);
}
return loader;
}
delete(loader);
@ -328,6 +338,7 @@ LoadModule* LoaderMgr::loader(const char* data, uint32_t size, const string& mim
if (auto loader = _findByType(mimeType)) {
if (loader->open(data, size, rpath, copy)) {
loader->hashkey = HASH_KEY(data, size);
unique_lock<mutex> lock{mtx};
_activeLoaders.back(loader);
return loader;
} else {
@ -342,7 +353,10 @@ LoadModule* LoaderMgr::loader(const char* data, uint32_t size, const string& mim
if (loader) {
if (loader->open(data, size, rpath, copy)) {
loader->hashkey = HASH_KEY(data, size);
{
unique_lock<mutex> lock{mtx};
_activeLoaders.back(loader);
}
return loader;
}
delete(loader);
@ -362,7 +376,10 @@ LoadModule* LoaderMgr::loader(const uint32_t *data, uint32_t w, uint32_t h, bool
auto loader = new RawLoader;
if (loader->open(data, w, h, premultiplied, copy)) {
loader->hashkey = HASH_KEY((const char*)data, w * h);
{
unique_lock<mutex> lock{mtx};
_activeLoaders.back(loader);
}
return loader;
}
delete(loader);