forked from mirrors/gecko-dev
7d06300567
gecko uses IDXGIResource::GetSharedHandle(). But it is recommend not to use anymore to retrieve the handle to a shared resource. IDXGIResource1::CreateSharedHandle() with D3D11_RESOURCE_MISC_SHARED_NTHANDLE flag should be used instead of the GetSharedHandle(). The CreateSharedHandle() could be called only once for a shared resource. Later calls fail. HANDLEs of ID3D11Texture2D are replaced by gfx::FileHandleWrappers. Differential Revision: https://phabricator.services.mozilla.com/D192173
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _include_gfx_ipc_FileHandleWrapper_h__
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#define _include_gfx_ipc_FileHandleWrapper_h__
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#include "mozilla/UniquePtrExtensions.h"
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#include "nsISupportsImpl.h"
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namespace mozilla {
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namespace ipc {
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template <typename T>
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struct IPDLParamTraits;
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} // namespace ipc
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namespace gfx {
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//
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// A class for sharing file handle or shared handle among multiple clients.
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//
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// The file handles or the shared handles consume system resources. The class
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// could reduce the number of shared handles in a process.
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//
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class FileHandleWrapper {
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friend struct mozilla::ipc::IPDLParamTraits<gfx::FileHandleWrapper*>;
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FileHandleWrapper);
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explicit FileHandleWrapper(mozilla::UniqueFileHandle&& aHandle);
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mozilla::detail::FileHandleType GetHandle();
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mozilla::UniqueFileHandle ClonePlatformHandle();
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protected:
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~FileHandleWrapper();
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const mozilla::UniqueFileHandle mHandle;
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};
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struct FenceInfo {
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FenceInfo() = default;
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FenceInfo(FileHandleWrapper* aFenceHandle, uint64_t aFenceValue)
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: mFenceHandle(aFenceHandle), mFenceValue(aFenceValue) {}
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bool operator==(const FenceInfo& aOther) const {
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return mFenceHandle == aOther.mFenceHandle &&
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mFenceValue == aOther.mFenceValue;
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}
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RefPtr<FileHandleWrapper> mFenceHandle;
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uint64_t mFenceValue = 0;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif // _include_gfx_ipc_FileHandleWrapper_h__
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