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Avoid unmap an umat(ocl) which hasn't been mapped at all.

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According to opencl 1.2 spec 5.4.2:
  enqueues a command to unmap a previously mapped region of a memory object.
  ...
  CL_INVALID_VALUE if mapped_ptr is not a valid pointer returned by
  clEnqueueMapBuffer, or clEnqueueMapImage for memobj.

So if the u->data is not from a clEnqueueMapBuffer call, we should not
call clEnqueueUnmapMemObject() unmap it. With this patch, the cases
./opencv_test_video --gtest_filter=OCL_Video/FarnebackOpticalFlow.Mat/*
could work well with beignet 0.9.1, Otherwise, it will get a
CL_INVALID_VALUE at the clEnqueueUnmapMemObject().

Signed-off-by: Zhigang Gong <zhigang.gong@intel.com>
This commit is contained in:
Zhigang Gong
2014-07-09 16:04:22 +08:00
parent 0f1a0a9818
commit 2e49ca4903
3 changed files with 18 additions and 2 deletions
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7
modules/core/src/ocl.cpp
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@@ -3739,6 +3739,7 @@ public:
u->handle = clCreateBuffer(ctx_handle, CL_MEM_COPY_HOST_PTR|CL_MEM_READ_WRITE|createFlags,
u->size, u->origdata, &retval);
tempUMatFlags = UMatData::TEMP_COPIED_UMAT;
}
if(!u->handle || retval != CL_SUCCESS)
return false;
@@ -3880,6 +3881,7 @@ public:
if(u->data && retval == CL_SUCCESS)
{
u->markHostCopyObsolete(false);
u->markDeviceMemMapped(true);
return;
}
@@ -3908,6 +3910,7 @@ public:
if(!u)
return;
CV_Assert(u->handle != 0);
UMatDataAutoLock autolock(u);
@@ -3918,8 +3921,10 @@ public:
cl_command_queue q = (cl_command_queue)Queue::getDefault().ptr();
cl_int retval = 0;
if( !u->copyOnMap() && u->data )
if( !u->copyOnMap() && u->deviceMemMapped() )
{
CV_Assert(u->data != NULL);
u->markDeviceMemMapped(false);
CV_Assert( (retval = clEnqueueUnmapMemObject(q,
(cl_mem)u->handle, u->data, 0, 0, 0)) == CL_SUCCESS );
CV_OclDbgAssert(clFinish(q) == CL_SUCCESS);