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* Copyright 2022 Google LLC.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrDawnAsyncWait_DEFINED
#define GrDawnAsyncWait_DEFINED
#include "webgpu/webgpu_cpp.h"
#include <atomic>
#include <functional>
// Utility for monitoring the execution of an asynchronous Dawn-API event.
class GrDawnAsyncWait final {
explicit GrDawnAsyncWait(const wgpu::Device& device);
// Returns true if the wait has been signaled and false otherwise. This function yields
// execution to the event loop where Dawn's asynchronous tasks get scheduled and returns
// as soon as the loop yields the execution back to the caller.
bool yieldAndCheck() const;
// Busy-waits until this wait has been signaled.
// TODO(armansito): This could benefit from a timeout in the case the wait never gets signaled.
void busyWait() const;
// Marks this wait as resolved. Once called, all calls to `yieldAndCheck` and `busyWait` will
// return true immediately.
void signal() {; }
// Resets this object into its unsignaled state.
void reset() {; }
wgpu::Device fDevice;
std::atomic_bool fSignaled;
#endif // GrDawnAsyncWait_DEFINED