chromium/third_party/dawn/src/dawn/native/ExecutionQueue.cpp

// Copyright 2023 The Dawn & Tint Authors
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#include "dawn/native/ExecutionQueue.h"

#include <atomic>

namespace dawn::native {

ExecutionSerial ExecutionQueueBase::GetPendingCommandSerial() const { … }

ExecutionSerial ExecutionQueueBase::GetLastSubmittedCommandSerial() const { … }

ExecutionSerial ExecutionQueueBase::GetCompletedCommandSerial() const { … }

MaybeError ExecutionQueueBase::CheckPassedSerials() { … }

MaybeError ExecutionQueueBase::EnsureCommandsFlushed(ExecutionSerial serial) { … }

void ExecutionQueueBase::AssumeCommandsComplete() { … }

void ExecutionQueueBase::IncrementLastSubmittedCommandSerial() { … }

bool ExecutionQueueBase::HasScheduledCommands() const { … }

// All prevously submitted works at the moment will supposedly complete at this serial.
// Internally the serial is computed according to whether frontend and backend have pending
// commands. There are 4 cases of combination:
//   1) Frontend(No), Backend(No)
//   2) Frontend(No), Backend(Yes)
//   3) Frontend(Yes), Backend(No)
//   4) Frontend(Yes), Backend(Yes)
// For case 1, we don't need the serial to track the task as we can ack it right now.
// For case 2 and 4, there will be at least an eventual submission, so we can use
// 'GetPendingCommandSerial' as the serial.
// For case 3, we can't use 'GetPendingCommandSerial' as it won't be submitted surely. Instead we
// use 'GetLastSubmittedCommandSerial', which must be fired eventually.
ExecutionSerial ExecutionQueueBase::GetScheduledWorkDoneSerial() const { … }

}  // namespace dawn::native