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// Copyright 2018 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 "components/heap_profiling/supervisor.h"
#include "base/memory/ref_counted_memory.h"
#include "base/no_destructor.h"
#include "components/heap_profiling/client_connection_manager.h"
#include "components/services/heap_profiling/public/cpp/controller.h"
#include "components/services/heap_profiling/public/cpp/settings.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/tracing_controller.h"
#include "content/public/common/service_manager_connection.h"
#include "services/resource_coordinator/public/cpp/memory_instrumentation/memory_instrumentation.h"
#include "services/service_manager/public/cpp/connector.h"
namespace heap_profiling {
namespace {
base::trace_event::TraceConfig GetBackgroundTracingConfig(bool anonymize) {
// Disable all categories other than memory-infra.
base::trace_event::TraceConfig trace_config(
"-*,disabled-by-default-memory-infra",
base::trace_event::RECORD_UNTIL_FULL);
// This flag is set by background tracing to filter out undesired events.
if (anonymize)
trace_config.EnableArgumentFilter();
return trace_config;
}
} // namespace
// static
Supervisor* Supervisor::GetInstance() {
static base::NoDestructor<Supervisor> supervisor;
return supervisor.get();
}
Supervisor::Supervisor() = default;
Supervisor::~Supervisor() {
NOTREACHED();
}
bool Supervisor::HasStarted() {
return started_;
}
void Supervisor::SetClientConnectionManagerConstructor(
ClientConnectionManagerConstructor constructor) {
DCHECK(!HasStarted());
constructor_ = constructor;
}
void Supervisor::Start(content::ServiceManagerConnection* connection,
base::OnceClosure closure) {
Start(connection, GetModeForStartup(), GetStackModeForStartup(),
GetSamplingRateForStartup(), std::move(closure));
}
void Supervisor::Start(content::ServiceManagerConnection* connection,
Mode mode,
mojom::StackMode stack_mode,
uint32_t sampling_rate,
base::OnceClosure closure) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(!started_);
content::BrowserThread::GetTaskRunnerForThread(content::BrowserThread::IO)
->PostTask(FROM_HERE,
base::BindOnce(&Supervisor::StartServiceOnIOThread,
base::Unretained(this),
connection->GetConnector()->Clone(), mode,
stack_mode, sampling_rate, std::move(closure)));
}
Mode Supervisor::GetMode() {
DCHECK(HasStarted());
return client_connection_manager_->GetMode();
}
void Supervisor::StartManualProfiling(base::ProcessId pid) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(HasStarted());
client_connection_manager_->StartProfilingProcess(pid);
}
void Supervisor::SetKeepSmallAllocations(bool keep_small_allocations) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(HasStarted());
content::BrowserThread::GetTaskRunnerForThread(content::BrowserThread::IO)
->PostTask(
FROM_HERE,
base::BindOnce(&Supervisor::SetKeepSmallAllocationsOnIOThread,
base::Unretained(this), keep_small_allocations));
}
void Supervisor::GetProfiledPids(GetProfiledPidsCallback callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(HasStarted());
content::BrowserThread::GetTaskRunnerForThread(content::BrowserThread::IO)
->PostTask(FROM_HERE,
base::BindOnce(&Supervisor::GetProfiledPidsOnIOThread,
base::Unretained(this), std::move(callback)));
}
uint32_t Supervisor::GetSamplingRate() {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(HasStarted());
return controller_->sampling_rate();
}
void Supervisor::RequestTraceWithHeapDump(TraceFinishedCallback callback,
bool anonymize) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(HasStarted());
if (content::TracingController::GetInstance()->IsTracing()) {
DLOG(ERROR) << "Requesting heap dump when tracing has already started.";
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), false, std::string()));
return;
}
auto finished_dump_callback = base::BindOnce(
[](TraceFinishedCallback callback, bool success, uint64_t dump_guid) {
// Once the trace has stopped, run |callback| on the UI thread.
auto finish_sink_callback = base::Bind(
[](TraceFinishedCallback callback,
std::unique_ptr<const base::DictionaryValue> metadata,
base::RefCountedString* in) {
std::string result;
result.swap(in->data());
content::BrowserThread::GetTaskRunnerForThread(
content::BrowserThread::UI)
->PostTask(FROM_HERE,
base::BindOnce(std::move(callback), true,
std::move(result)));
},
base::Passed(std::move(callback)));
scoped_refptr<content::TracingController::TraceDataEndpoint> sink =
content::TracingController::CreateStringEndpoint(
std::move(finish_sink_callback));
content::TracingController::GetInstance()->StopTracing(sink);
},
std::move(callback));
auto trigger_memory_dump_callback = base::BindOnce(
[](base::OnceCallback<void(bool success, uint64_t dump_guid)>
finished_dump_callback) {
memory_instrumentation::MemoryInstrumentation::GetInstance()
->RequestGlobalDumpAndAppendToTrace(
base::trace_event::MemoryDumpType::EXPLICITLY_TRIGGERED,
base::trace_event::MemoryDumpLevelOfDetail::BACKGROUND,
base::AdaptCallbackForRepeating(
std::move(finished_dump_callback)));
},
std::move(finished_dump_callback));
// The only reason this should return false is if tracing is already enabled,
// which we've already checked.
// Use AdaptCallbackForRepeating since the argument passed to StartTracing()
// is intended to be a OnceCallback, but the code has not yet been migrated.
bool result = content::TracingController::GetInstance()->StartTracing(
GetBackgroundTracingConfig(anonymize),
base::AdaptCallbackForRepeating(std::move(trigger_memory_dump_callback)));
DCHECK(result);
}
void Supervisor::StartServiceOnIOThread(
std::unique_ptr<service_manager::Connector> connector,
Mode mode,
mojom::StackMode stack_mode,
uint32_t sampling_rate,
base::OnceClosure closure) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
controller_.reset(
new Controller(std::move(connector), stack_mode, sampling_rate));
base::WeakPtr<Controller> controller_weak_ptr = controller_->GetWeakPtr();
content::BrowserThread::GetTaskRunnerForThread(content::BrowserThread::UI)
->PostTask(FROM_HERE,
base::BindOnce(&Supervisor::FinishInitializationOnUIhread,
base::Unretained(this), mode,
std::move(closure), controller_weak_ptr));
}
void Supervisor::FinishInitializationOnUIhread(
Mode mode,
base::OnceClosure closure,
base::WeakPtr<Controller> controller_weak_ptr) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(!started_);
started_ = true;
if (constructor_) {
client_connection_manager_ = (*constructor_)(controller_weak_ptr, mode);
} else {
client_connection_manager_ =
std::make_unique<ClientConnectionManager>(controller_weak_ptr, mode);
}
client_connection_manager_->Start();
if (closure)
std::move(closure).Run();
}
void Supervisor::GetProfiledPidsOnIOThread(GetProfiledPidsCallback callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
auto post_result_to_ui_thread = base::BindOnce(
[](GetProfiledPidsCallback callback,
const std::vector<base::ProcessId>& result) {
content::BrowserThread::GetTaskRunnerForThread(
content::BrowserThread::UI)
->PostTask(FROM_HERE, base::BindOnce(std::move(callback), result));
},
std::move(callback));
controller_->GetProfiledPids(std::move(post_result_to_ui_thread));
}
void Supervisor::SetKeepSmallAllocationsOnIOThread(
bool keep_small_allocations) {
controller_->SetKeepSmallAllocations(keep_small_allocations);
}
} // namespace heap_profiling
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