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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/vulkan/semaphore_handle.h"
#include "base/logging.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>
#endif
namespace gpu {
SemaphoreHandle::SemaphoreHandle() = default;
SemaphoreHandle::SemaphoreHandle(VkExternalSemaphoreHandleTypeFlagBits type,
PlatformHandle handle)
: type_(type), handle_(std::move(handle)) {}
SemaphoreHandle::SemaphoreHandle(SemaphoreHandle&&) = default;
SemaphoreHandle::~SemaphoreHandle() = default;
SemaphoreHandle& SemaphoreHandle::operator=(SemaphoreHandle&&) = default;
SemaphoreHandle::SemaphoreHandle(gfx::GpuFenceHandle fence_handle) {
#if BUILDFLAG(IS_FUCHSIA)
// Fuchsia's Vulkan driver allows zx::event to be obtained from a
// VkSemaphore, which can then be used to submit present work, see
// https://fuchsia.dev/reference/fidl/fuchsia.ui.scenic.
Init(VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_ZIRCON_EVENT_BIT_FUCHSIA,
fence_handle.Release());
#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
Init(VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT_KHR,
fence_handle.Release());
#elif BUILDFLAG(IS_POSIX)
Init(VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT_KHR,
fence_handle.Release());
#elif BUILDFLAG(IS_WIN)
Init(VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_WIN32_BIT,
fence_handle.Release());
#endif // BUILDFLAG(IS_FUCHSIA)
}
void SemaphoreHandle::Init(VkExternalSemaphoreHandleTypeFlagBits type,
PlatformHandle handle) {
type_ = type;
handle_ = std::move(handle);
}
gfx::GpuFenceHandle SemaphoreHandle::ToGpuFenceHandle() && {
gfx::GpuFenceHandle fence_handle;
#if BUILDFLAG(IS_FUCHSIA)
// Fuchsia's Vulkan driver allows zx::event to be obtained from a
// VkSemaphore, which can then be used to submit present work, see
// https://fuchsia.dev/reference/fidl/fuchsia.ui.scenic.
fence_handle.Adopt(TakeHandle());
#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
if (type_ == VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT_KHR) {
fence_handle.Adopt(TakeHandle());
} else {
DLOG(ERROR) << "Unable to convert SemaphoreHandle to GpuFenceHandle";
}
#elif BUILDFLAG(IS_POSIX)
fence_handle.Adopt(TakeHandle());
#elif BUILDFLAG(IS_WIN)
fence_handle.Adopt(TakeHandle());
#endif // BUILDFLAG(IS_FUCHSIA)
return fence_handle;
}
SemaphoreHandle SemaphoreHandle::Duplicate() const {
if (!is_valid())
return SemaphoreHandle();
#if BUILDFLAG(IS_POSIX)
return SemaphoreHandle(type_,
base::ScopedFD(HANDLE_EINTR(dup(handle_.get()))));
#elif BUILDFLAG(IS_WIN)
HANDLE handle_dup;
if (!::DuplicateHandle(::GetCurrentProcess(), handle_.Get(),
::GetCurrentProcess(), &handle_dup, 0, FALSE,
DUPLICATE_SAME_ACCESS)) {
return SemaphoreHandle();
}
return SemaphoreHandle(type_, base::win::ScopedHandle(handle_dup));
#elif BUILDFLAG(IS_FUCHSIA)
zx::event event_dup;
zx_status_t status = handle_.duplicate(ZX_RIGHT_SAME_RIGHTS, &event_dup);
if (status != ZX_OK) {
ZX_DLOG(ERROR, status) << "zx_handle_duplicate";
return SemaphoreHandle();
}
return SemaphoreHandle(type_, std::move(event_dup));
#else
#error Unsupported OS
#endif
}
} // namespace gpu
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