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// Copyright 2019 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 "gpu/command_buffer/service/dawn_platform.h"
#include "base/trace_event/trace_arguments.h"
#include "base/trace_event/trace_event.h"
namespace gpu {
namespace webgpu {
DawnPlatform::DawnPlatform() = default;
DawnPlatform::~DawnPlatform() = default;
const unsigned char* DawnPlatform::GetTraceCategoryEnabledFlag(
dawn_platform::TraceCategory category) {
// For now, all Dawn trace categories are put under "gpu.dawn"
return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(
TRACE_DISABLED_BY_DEFAULT("gpu.dawn"));
}
double DawnPlatform::MonotonicallyIncreasingTime() {
return (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
}
uint64_t DawnPlatform::AddTraceEvent(
char phase,
const unsigned char* category_group_enabled,
const char* name,
uint64_t id,
double timestamp,
int num_args,
const char** arg_names,
const unsigned char* arg_types,
const uint64_t* arg_values,
unsigned char flags) {
base::TimeTicks timestamp_tt =
base::TimeTicks() + base::TimeDelta::FromSecondsD(timestamp);
base::trace_event::TraceArguments args(
num_args, arg_names, arg_types,
reinterpret_cast<const unsigned long long*>(arg_values));
base::trace_event::TraceEventHandle handle =
TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
phase, category_group_enabled, name,
trace_event_internal::kGlobalScope, id, trace_event_internal::kNoId,
base::PlatformThread::CurrentId(), timestamp_tt, &args, flags);
uint64_t result = 0;
static_assert(sizeof(base::trace_event::TraceEventHandle) <= sizeof(result),
"TraceEventHandle must be at most the size of uint64_t");
static_assert(std::is_pod<base::trace_event::TraceEventHandle>(),
"TraceEventHandle must be memcpy'able");
memcpy(&result, &handle, sizeof(base::trace_event::TraceEventHandle));
return result;
}
} // namespace webgpu
} // namespace gpu
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