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fixed bugs in page locked memory allocation

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avoid extra gpu memory allocation in BP and CSBP
This commit is contained in:
Anatoly Baksheev
2010-08-17 10:39:18 +00:00
parent ba713f28f9
commit 9a669b1ceb
6 changed files with 95 additions and 100 deletions
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73
modules/gpu/src/matrix_operations.cpp
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@@ -67,9 +67,9 @@ namespace cv
void GpuMat::create(int /*_rows*/, int /*_cols*/, int /*_type*/) { throw_nogpu(); }
void GpuMat::release() { throw_nogpu(); }
void MatPL::create(int /*_rows*/, int /*_cols*/, int /*_type*/, int /*type_alloc*/) { throw_nogpu(); }
bool MatPL::can_device_map_to_host() { throw_nogpu(); return false; }
void MatPL::release() { throw_nogpu(); }
void CudaMem::create(int /*_rows*/, int /*_cols*/, int /*_type*/, int /*type_alloc*/) { throw_nogpu(); }
bool CudaMem::can_device_map_to_host() { throw_nogpu(); return false; }
void CudaMem::release() { throw_nogpu(); }
}
}
@@ -83,7 +83,7 @@ void cv::gpu::GpuMat::upload(const Mat& m)
cudaSafeCall( cudaMemcpy2D(data, step, m.data, m.step, cols * elemSize(), rows, cudaMemcpyHostToDevice) );
}
void cv::gpu::GpuMat::upload(const MatPL& m, Stream& stream)
void cv::gpu::GpuMat::upload(const CudaMem& m, Stream& stream)
{
CV_DbgAssert(!m.empty());
stream.enqueueUpload(m, *this);
@@ -96,7 +96,7 @@ void cv::gpu::GpuMat::download(cv::Mat& m) const
cudaSafeCall( cudaMemcpy2D(m.data, m.step, data, step, cols * elemSize(), rows, cudaMemcpyDeviceToHost) );
}
void cv::gpu::GpuMat::download(MatPL& m, Stream& stream) const
void cv::gpu::GpuMat::download(CudaMem& m, Stream& stream) const
{
CV_DbgAssert(!m.empty());
stream.enqueueDownload(*this, m);
@@ -210,15 +210,6 @@ GpuMat cv::gpu::GpuMat::reshape(int new_cn, int new_rows) const
return hdr;
}
bool cv::gpu::MatPL::can_device_map_to_host()
{
cudaDeviceProp prop;
cudaGetDeviceProperties(&prop, 0);
return (prop.canMapHostMemory != 0) ? true : false;
}
void cv::gpu::GpuMat::create(int _rows, int _cols, int _type)
{
_type &= TYPE_MASK;
@@ -266,12 +257,21 @@ void cv::gpu::GpuMat::release()
///////////////////////////////////////////////////////////////////////
//////////////////////////////// MatPL ////////////////////////////////
//////////////////////////////// CudaMem //////////////////////////////
///////////////////////////////////////////////////////////////////////
void cv::gpu::MatPL::create(int _rows, int _cols, int _type, int type_alloc)
bool cv::gpu::CudaMem::can_device_map_to_host()
{
alloc_type = type_alloc;
cudaDeviceProp prop;
cudaGetDeviceProperties(&prop, 0);
return (prop.canMapHostMemory != 0) ? true : false;
}
void cv::gpu::CudaMem::create(int _rows, int _cols, int _type, int _alloc_type)
{
if (_alloc_type == ALLOC_ZEROCOPY && !can_device_map_to_host())
cv::gpu::error("ZeroCopy is not supported by current device", __FILE__, __LINE__);
_type &= TYPE_MASK;
if( rows == _rows && cols == _cols && type() == _type && data )
return;
@@ -279,7 +279,7 @@ void cv::gpu::MatPL::create(int _rows, int _cols, int _type, int type_alloc)
release();
CV_DbgAssert( _rows >= 0 && _cols >= 0 );
if( _rows > 0 && _cols > 0 )
{
{
flags = Mat::MAGIC_VAL + Mat::CONTINUOUS_FLAG + _type;
rows = _rows;
cols = _cols;
@@ -291,24 +291,15 @@ void cv::gpu::MatPL::create(int _rows, int _cols, int _type, int type_alloc)
size_t datasize = alignSize(nettosize, (int)sizeof(*refcount));
//datastart = data = (uchar*)fastMalloc(datasize + sizeof(*refcount));
alloc_type = _alloc_type;
void *ptr;
switch (type_alloc)
switch (alloc_type)
{
case ALLOC_PAGE_LOCKED: cudaSafeCall( cudaHostAlloc( &ptr, datasize, cudaHostAllocDefault) ); break;
case ALLOC_ZEROCOPY:
if (can_device_map_to_host() == true)
{
cudaSafeCall( cudaHostAlloc( &ptr, datasize, cudaHostAllocMapped) );
}
else
cv::gpu::error("ZeroCopy is not supported by current device", __FILE__, __LINE__);
break;
case ALLOC_PAGE_LOCKED: cudaSafeCall( cudaHostAlloc( &ptr, datasize, cudaHostAllocDefault) ); break;
case ALLOC_ZEROCOPY: cudaSafeCall( cudaHostAlloc( &ptr, datasize, cudaHostAllocMapped) ); break;
case ALLOC_WRITE_COMBINED: cudaSafeCall( cudaHostAlloc( &ptr, datasize, cudaHostAllocWriteCombined) ); break;
default:
cv::gpu::error("Invalid alloc type", __FILE__, __LINE__);
default: cv::gpu::error("Invalid alloc type", __FILE__, __LINE__);
}
datastart = data = (uchar*)ptr;
@@ -319,20 +310,22 @@ void cv::gpu::MatPL::create(int _rows, int _cols, int _type, int type_alloc)
}
}
inline MatPL::operator GpuMat() const
inline CudaMem::operator GpuMat() const
{
GpuMat res;
if (alloc_type == ALLOC_ZEROCOPY)
{
void ** pdev;
cudaHostGetDevicePointer( pdev, this->data, 0 );
GpuMat m(this->rows, this->cols, this->type(), *pdev, this->step);
return m;
void *pdev;
cudaSafeCall( cudaHostGetDevicePointer( &pdev, data, 0 ) );
res = GpuMat(rows, cols, type(), pdev, step);
}
else
cv::gpu::error("", __FILE__, __LINE__);
cv::gpu::error("Zero-copy is not supported or memory was allocated without zero-copy flag", __FILE__, __LINE__);
return res;
}
void cv::gpu::MatPL::release()
void cv::gpu::CudaMem::release()
{
if( refcount && CV_XADD(refcount, -1) == 1 )
{