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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/ipc/FileHandleWrapper.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/ipc/FileHandleWrapper.h')
-rw-r--r--gfx/ipc/FileHandleWrapper.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/gfx/ipc/FileHandleWrapper.h b/gfx/ipc/FileHandleWrapper.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _include_gfx_ipc_FileHandleWrapper_h__
+#define _include_gfx_ipc_FileHandleWrapper_h__
+
+#include "mozilla/UniquePtrExtensions.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla {
+
+namespace ipc {
+template <typename T>
+struct IPDLParamTraits;
+} // namespace ipc
+
+namespace gfx {
+
+//
+// A class for sharing file handle or shared handle among multiple clients.
+//
+// The file handles or the shared handles consume system resources. The class
+// could reduce the number of shared handles in a process.
+//
+class FileHandleWrapper {
+ friend struct mozilla::ipc::IPDLParamTraits<gfx::FileHandleWrapper*>;
+
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(FileHandleWrapper);
+
+ explicit FileHandleWrapper(mozilla::UniqueFileHandle&& aHandle);
+
+ mozilla::detail::FileHandleType GetHandle();
+
+ mozilla::UniqueFileHandle ClonePlatformHandle();
+
+ protected:
+ ~FileHandleWrapper();
+
+ const mozilla::UniqueFileHandle mHandle;
+};
+
+struct FenceInfo {
+ FenceInfo() = default;
+ FenceInfo(FileHandleWrapper* aFenceHandle, uint64_t aFenceValue)
+ : mFenceHandle(aFenceHandle), mFenceValue(aFenceValue) {}
+
+ bool operator==(const FenceInfo& aOther) const {
+ return mFenceHandle == aOther.mFenceHandle &&
+ mFenceValue == aOther.mFenceValue;
+ }
+
+ RefPtr<FileHandleWrapper> mFenceHandle;
+ uint64_t mFenceValue = 0;
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif // _include_gfx_ipc_FileHandleWrapper_h__