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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/tracing/test_tracing_session.h"
#include "base/task/thread_pool.h"
#include "third_party/perfetto/protos/perfetto/config/data_source_config.gen.h"
#include "third_party/perfetto/protos/perfetto/config/trace_config.gen.h"
namespace content {
TestTracingSession::TestTracingSession() = default;
TestTracingSession::~TestTracingSession() = default;
void TestTracingSession::Setup(const perfetto::TraceConfig& config, int fd) {
if (!config.data_sources().empty()) {
start_should_fail_ = config.data_sources()[0].config().name() == "Invalid";
should_spuriously_stop = config.data_sources()[0].config().name() == "Stop";
}
}
void TestTracingSession::Start() {
if (start_should_fail_) {
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](std::function<void(perfetto::TracingError)> // nocheck
on_error_callback) {
on_error_callback(
{perfetto::TracingError::kTracingFailed, "error"});
},
on_error_callback_));
return;
}
if (should_spuriously_stop) {
Stop();
return;
}
// perfetto::TracingSession runs callbacks from its own background thread.
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](std::function<void()> on_start_callback) { // nocheck
on_start_callback();
},
on_start_callback_));
}
void TestTracingSession::StartBlocking() {
NOTIMPLEMENTED();
}
void TestTracingSession::SetOnStartCallback(
std::function<void()> on_start) { // nocheck
on_start_callback_ = on_start;
}
void TestTracingSession::SetOnErrorCallback(
std::function<void(perfetto::TracingError)> on_error) // nocheck
{
on_error_callback_ = on_error;
}
void TestTracingSession::Flush(std::function<void(bool)>, // nocheck
uint32_t timeout_ms) {
NOTIMPLEMENTED();
}
void TestTracingSession::Stop() {
// perfetto::TracingSession runs callbacks from its own background thread.
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](std::function<void()> on_stop_callback) { // nocheck
on_stop_callback();
},
on_stop_callback_));
}
void TestTracingSession::CloneTrace(CloneTraceArgs args,
CloneTraceCallback on_session_cloned) {
// perfetto::TracingSession runs callbacks from its own background thread.
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](CloneTraceCallback on_session_cloned) { // nocheck
on_session_cloned(
{true, "", kClonedSessionId.low(), kClonedSessionId.high()});
},
on_session_cloned));
}
void TestTracingSession::StopBlocking() {
NOTIMPLEMENTED();
}
void TestTracingSession::SetOnStopCallback(
std::function<void()> on_stop) { // nocheck
on_stop_callback_ = on_stop;
}
void TestTracingSession::ChangeTraceConfig(const perfetto::TraceConfig&) {
NOTIMPLEMENTED();
}
void TestTracingSession::ReadTrace(ReadTraceCallback read_callback) {
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](ReadTraceCallback read_callback) { // nocheck
std::string trace_content = "this is a trace";
read_callback({trace_content.data(), trace_content.size(),
/*has_more=*/false});
},
read_callback));
}
void TestTracingSession::GetTraceStats(GetTraceStatsCallback stats_callback) {
base::ThreadPool::PostTask(
FROM_HERE,
{base::MayBlock(), base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](GetTraceStatsCallback stats_callback) { // nocheck
GetTraceStatsCallbackArgs args;
args.success = true;
stats_callback(args);
},
stats_callback));
}
void TestTracingSession::QueryServiceState(QueryServiceStateCallback) {
NOTIMPLEMENTED();
}
} // namespace content
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