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- // Copyright 2017 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "ui/gfx/gpu_fence_handle.h"
- #include "base/debug/alias.h"
- #include "base/notreached.h"
- #include "build/build_config.h"
- #if BUILDFLAG(IS_POSIX)
- #include <unistd.h>
- #include "base/posix/eintr_wrapper.h"
- #endif
- #if BUILDFLAG(IS_FUCHSIA)
- #include "base/fuchsia/fuchsia_logging.h"
- #endif
- #if BUILDFLAG(IS_WIN)
- #include <windows.h>
- #include "base/process/process_handle.h"
- #endif
- namespace gfx {
- GpuFenceHandle::GpuFenceHandle() = default;
- GpuFenceHandle::GpuFenceHandle(GpuFenceHandle&& other) = default;
- GpuFenceHandle& GpuFenceHandle::operator=(GpuFenceHandle&& other) = default;
- GpuFenceHandle::~GpuFenceHandle() = default;
- bool GpuFenceHandle::is_null() const {
- #if BUILDFLAG(IS_POSIX)
- return !owned_fd.is_valid();
- #elif BUILDFLAG(IS_FUCHSIA)
- return !owned_event.is_valid();
- #elif BUILDFLAG(IS_WIN)
- return !owned_handle.IsValid();
- #else
- return true;
- #endif
- }
- GpuFenceHandle GpuFenceHandle::Clone() const {
- if (is_null())
- return GpuFenceHandle();
- gfx::GpuFenceHandle handle;
- #if BUILDFLAG(IS_POSIX)
- const int duped_handle = HANDLE_EINTR(dup(owned_fd.get()));
- if (duped_handle < 0)
- return GpuFenceHandle();
- handle.owned_fd = base::ScopedFD(duped_handle);
- #elif BUILDFLAG(IS_FUCHSIA)
- zx_status_t status =
- owned_event.duplicate(ZX_RIGHT_SAME_RIGHTS, &handle.owned_event);
- if (status != ZX_OK) {
- ZX_DLOG(ERROR, status) << "zx_handle_duplicate";
- return GpuFenceHandle();
- }
- #elif BUILDFLAG(IS_WIN)
- const base::ProcessHandle process = ::GetCurrentProcess();
- HANDLE duplicated_handle = INVALID_HANDLE_VALUE;
- const BOOL result =
- ::DuplicateHandle(process, owned_handle.Get(), process,
- &duplicated_handle, 0, FALSE, DUPLICATE_SAME_ACCESS);
- if (!result) {
- const DWORD last_error = ::GetLastError();
- base::debug::Alias(&last_error);
- CHECK(false);
- }
- handle.owned_handle.Set(duplicated_handle);
- #else
- NOTREACHED();
- #endif
- return handle;
- }
- } // namespace gfx
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