Note: the buffer is only valid for the lifetime of the CScanIterator object.
pBmFormat - Pointer to a BMFORMAT enumeration that recieves the format
pcWidth - Pointer to storage that recieves the pixel width
pcHeight - Pointer to storage that recieves the pixel height
pcbStride - Pointer to storage that recieves the stride
Return Value:
HRESULT
S_OK - On success
E_* - On error
--*/
HRESULT
CScanIterator::GetScanBuffer(
__deref_bcount(*pcbStride) PBYTE* ppData,
__out BMFORMAT* pBmFormat,
__out UINT* pcWidth,
__out UINT* pcHeight,
__out UINT* pcbStride
)
{
HRESULT hr = S_OK;
if (SUCCEEDED(hr = CHECK_POINTER(ppData, E_POINTER)) &&
SUCCEEDED(hr = CHECK_POINTER(pBmFormat, E_POINTER)) &&
SUCCEEDED(hr = CHECK_POINTER(pcWidth, E_POINTER)) &&
SUCCEEDED(hr = CHECK_POINTER(pcHeight, E_POINTER)) &&
SUCCEEDED(hr = CHECK_POINTER(pcbStride, E_POINTER)))
{
*ppData = NULL;
this->GetBuffer(allocation, bytes, &buffer);
if (!this->CommitBuffer(allocation, buffer, 0, /*sourceBuffer=*/ nullptr, /*alignPad=*/ bytes))
{
return false;
}
#if DBG_DUMP
this->totalBytesCode -= bytes;
#endif
}
return true;
}
template <typename SyncObject>
EmitBufferAllocation* EmitBufferManager<SyncObject>::GetBuffer(EmitBufferAllocation *allocation, __in size_t bytes, __deref_bcount(bytes) BYTE** ppBuffer)
{
Assert(this->criticalSection.IsLocked());
Assert(allocation->BytesFree() >= bytes);
// In case of ThunkEmitter the script context would be null and we don't want to track that as code size.
if (scriptContext && !allocation->recorded)
{
this->scriptContext->GetThreadContext()->AddCodeSize(allocation->bytesCommitted);
allocation->recorded = true;
}
// The codegen buffer is beyond the alignment section - hence, we pass this pointer.
*ppBuffer = allocation->GetUnused();
return allocation;
if (!this->CommitBuffer(allocation, allocation->bytesCommitted, dstBuffer, 0, /*sourceBuffer=*/ nullptr, /*alignPad=*/ bytes))
{
return false;
}
#if DBG_DUMP
this->totalBytesCode -= bytes;
#endif
}
return true;
}
template <typename TAlloc, typename TPreReservedAlloc, class SyncObject>
EmitBufferAllocation<TAlloc, TPreReservedAlloc>*
EmitBufferManager<TAlloc, TPreReservedAlloc, SyncObject>::GetBuffer(TEmitBufferAllocation *allocation, __in size_t bytes, __deref_bcount(bytes) BYTE** ppBuffer)
{
Assert(this->criticalSection.IsLocked());
Assert(allocation->BytesFree() >= bytes);
// In case of ThunkEmitter the script context would be null and we don't want to track that as code size.
if (scriptContext && !allocation->recorded)
{
this->scriptContext->GetThreadContext()->AddCodeSize(allocation->bytesCommitted);
allocation->recorded = true;
}
// The codegen buffer is beyond the alignment section - hence, we pass this pointer.
*ppBuffer = allocation->GetUnused();
return allocation;