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Workaround hanging of ocl module when ocl API in not really used

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This commit is contained in:
Andrey Kamaev 2013-04-05 11:01:28 +04:00
parent 652606f780
commit 3400d83778
1 changed files with 11 additions and 4 deletions
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15
modules/ocl/src/initialization.cpp
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@ -913,6 +913,7 @@ namespace cv
auto_ptr<Context> Context::clCxt;
int Context::val = 0;
static Mutex cs;
static volatile int context_tear_down = 0;
Context* Context::getContext()
{
if(*((volatile int*)&val) != 1)
@ -920,9 +921,10 @@ namespace cv
AutoLock al(cs);
if(*((volatile int*)&val) != 1)
{
if (context_tear_down)
return clCxt.get();
if( 0 == clCxt.get())
clCxt.reset(new Context);
std::vector<Info> oclinfo;
CV_Assert(getDevice(oclinfo, CVCL_DEVICE_TYPE_ALL) > 0);
oclinfo[0].impl->setDevice(0, 0, 0);
@ -1045,9 +1047,14 @@ BOOL WINAPI DllMain( HINSTANCE, DWORD fdwReason, LPVOID )
{
// application hangs if call clReleaseCommandQueue here, so release context only
// without context release application hangs as well
cl_context ctx = (cl_context)getoclContext();
if(ctx)
openCLSafeCall(clReleaseContext(ctx));
context_tear_down = 1;
Context* cv_ctx = Context::getContext();
if(cv_ctx)
{
cl_context ctx = (cl_context)&(cv_ctx->impl->oclcontext);
if(ctx)
openCLSafeCall(clReleaseContext(ctx));
}
}
return TRUE;
}