114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
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// Copyright 2020 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/tracing/perfetto_platform.h"
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#include "base/strings/strcat.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/task/deferred_sequenced_task_runner.h"
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#include "base/task/task_traits.h"
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#include "base/task/thread_pool.h"
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#include "base/trace_event/trace_event.h"
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#include "base/tracing/perfetto_task_runner.h"
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#include "base/tracing_buildflags.h"
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#include "build/build_config.h"
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#if BUILDFLAG(IS_ANDROID)
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#include "base/android/build_info.h"
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#endif // BUILDFLAG(IS_ANDROID)
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#if !BUILDFLAG(IS_NACL)
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#include "third_party/perfetto/include/perfetto/ext/base/thread_task_runner.h"
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#endif
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namespace base {
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namespace tracing {
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namespace {
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constexpr char kProcessNamePrefix[] = "org.chromium-";
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} // namespace
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PerfettoPlatform::PerfettoPlatform(TaskRunnerType task_runner_type)
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: task_runner_type_(task_runner_type),
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deferred_task_runner_(new DeferredSequencedTaskRunner()),
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thread_local_object_([](void* object) {
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delete static_cast<ThreadLocalObject*>(object);
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}) {}
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PerfettoPlatform::~PerfettoPlatform() = default;
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void PerfettoPlatform::StartTaskRunner(
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scoped_refptr<SequencedTaskRunner> task_runner) {
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DCHECK_EQ(task_runner_type_, TaskRunnerType::kThreadPool);
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DCHECK(!did_start_task_runner_);
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deferred_task_runner_->StartWithTaskRunner(task_runner);
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did_start_task_runner_ = true;
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}
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SequencedTaskRunner* PerfettoPlatform::task_runner() const {
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return deferred_task_runner_.get();
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}
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PerfettoPlatform::ThreadLocalObject*
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PerfettoPlatform::GetOrCreateThreadLocalObject() {
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auto* object = static_cast<ThreadLocalObject*>(thread_local_object_.Get());
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if (!object) {
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object = ThreadLocalObject::CreateInstance().release();
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thread_local_object_.Set(object);
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}
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return object;
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}
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std::unique_ptr<perfetto::base::TaskRunner> PerfettoPlatform::CreateTaskRunner(
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const CreateTaskRunnerArgs&) {
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switch (task_runner_type_) {
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case TaskRunnerType::kBuiltin:
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#if !BUILDFLAG(IS_NACL)
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return std::make_unique<perfetto::base::ThreadTaskRunner>(
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perfetto::base::ThreadTaskRunner::CreateAndStart());
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#else
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DCHECK(false);
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return nullptr;
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#endif
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case TaskRunnerType::kThreadPool:
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// We can't create a real task runner yet because the ThreadPool may not
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// be initialized. Instead, we point Perfetto to a buffering task runner
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// which will become active as soon as the thread pool is up (see
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// StartTaskRunner).
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return std::make_unique<PerfettoTaskRunner>(deferred_task_runner_);
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}
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}
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// This method is used by the SDK to determine the producer name.
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// Note that we override the producer name for the mojo backend in ProducerHost,
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// and thus this only affects the producer name for the system backend.
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std::string PerfettoPlatform::GetCurrentProcessName() {
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const char* host_package_name = nullptr;
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#if BUILDFLAG(IS_ANDROID)
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host_package_name = android::BuildInfo::GetInstance()->host_package_name();
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#endif // BUILDFLAG(IS_ANDROID)
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// On Android we want to include if this is webview inside of an app or
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// Android Chrome. To aid this we add the host_package_name to differentiate
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// the various apps and sources.
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std::string process_name;
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if (host_package_name) {
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process_name = StrCat(
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{kProcessNamePrefix, host_package_name, "-",
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NumberToString(trace_event::TraceLog::GetInstance()->process_id())});
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} else {
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process_name = StrCat(
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{kProcessNamePrefix,
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NumberToString(trace_event::TraceLog::GetInstance()->process_id())});
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}
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return process_name;
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}
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perfetto::base::PlatformThreadId PerfettoPlatform::GetCurrentThreadId() {
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return base::PlatformThread::CurrentId();
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}
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} // namespace tracing
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} // namespace base
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