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Merge pull request #19886 from alalek:issue_19875

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Alexander Alekhin 2021-04-14 16:14:44 +00:00
commit 0649a2fbdb
2 changed files with 14 additions and 1 deletions
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2
modules/core/src/precomp.hpp
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@ -388,6 +388,8 @@ cv::Mutex& getInitializationMutex();
#define CV_SINGLETON_LAZY_INIT(TYPE, INITIALIZER) CV_SINGLETON_LAZY_INIT_(TYPE, INITIALIZER, instance)
#define CV_SINGLETON_LAZY_INIT_REF(TYPE, INITIALIZER) CV_SINGLETON_LAZY_INIT_(TYPE, INITIALIZER, *instance)
CV_EXPORTS void releaseTlsStorageThread();
int cv_snprintf(char* buf, int len, const char* fmt, ...);
int cv_vsnprintf(char* buf, int len, const char* fmt, va_list args);
}

13
modules/core/src/system.cpp
View File

@ -1583,6 +1583,9 @@ struct ThreadData
size_t idx; // Thread index in TLS storage. This is not OS thread ID!
};
static bool g_isTlsStorageInitialized = false;
// Main TLS storage class
class TlsStorage
{
@ -1592,6 +1595,7 @@ public:
{
tlsSlots.reserve(32);
threads.reserve(32);
g_isTlsStorageInitialized = true;
}
~TlsStorage()
{
@ -1810,6 +1814,13 @@ static void WINAPI opencv_fls_destructor(void* pData)
} // namespace details
using namespace details;
void releaseTlsStorageThread()
{
if (!g_isTlsStorageInitialized)
return; // nothing to release, so prefer to avoid creation of new global structures
getTlsStorage().releaseThread();
}
TLSDataContainer::TLSDataContainer()
{
key_ = (int)getTlsStorage().reserveSlot(this); // Reserve key from TLS storage
@ -1893,7 +1904,7 @@ BOOL WINAPI DllMain(HINSTANCE, DWORD fdwReason, LPVOID lpReserved)
{
// Not allowed to free resources if lpReserved is non-null
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms682583.aspx
cv::getTlsStorage().releaseThread();
releaseTlsStorageThread();
}
}
return TRUE;