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content / browser / devtools / protocol / memory_handler.cc [blame]
// Copyright 2015 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/devtools/protocol/memory_handler.h"
#include <cinttypes>
#include "base/functional/bind.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/profiler/module_cache.h"
#include "base/sampling_heap_profiler/sampling_heap_profiler.h"
#include "base/strings/stringprintf.h"
#include "content/public/browser/child_process_host.h"
#include "content/public/browser/render_process_host.h"
namespace content {
namespace protocol {
namespace {
constexpr char kAnotherLeakDetectionInProgress[] =
"Another leak detection in progress";
constexpr char kNoProcessToDetectLeaksIn[] = "No process to detect leaks in";
constexpr char kFailedToRunLeakDetection[] = "Failed to run leak detection";
} // namespace
MemoryHandler::MemoryHandler()
: DevToolsDomainHandler(Memory::Metainfo::domainName),
process_host_id_(ChildProcessHost::kInvalidUniqueID) {}
MemoryHandler::~MemoryHandler() = default;
void MemoryHandler::Wire(UberDispatcher* dispatcher) {
Memory::Dispatcher::wire(dispatcher, this);
}
void MemoryHandler::SetRenderer(int process_host_id,
RenderFrameHostImpl* frame_host) {
process_host_id_ = process_host_id;
}
Response MemoryHandler::GetBrowserSamplingProfile(
std::unique_ptr<Memory::SamplingProfile>* out_profile) {
base::ModuleCache module_cache;
auto samples = std::make_unique<Array<Memory::SamplingProfileNode>>();
std::vector<base::SamplingHeapProfiler::Sample> raw_samples =
base::SamplingHeapProfiler::Get()->GetSamples(0);
for (auto& sample : raw_samples) {
auto stack = std::make_unique<Array<String>>();
for (const void* frame : sample.stack) {
uintptr_t address = reinterpret_cast<uintptr_t>(frame);
module_cache.GetModuleForAddress(address); // Populates module_cache.
stack->emplace_back(base::StringPrintf("0x%" PRIxPTR, address));
}
samples->emplace_back(Memory::SamplingProfileNode::Create()
.SetSize(sample.size)
.SetTotal(sample.total)
.SetStack(std::move(stack))
.Build());
}
auto modules = std::make_unique<Array<Memory::Module>>();
for (const auto* module : module_cache.GetModules()) {
modules->emplace_back(
Memory::Module::Create()
.SetName(base::StringPrintf(
"%" PRFilePath, module->GetDebugBasename().value().c_str()))
.SetUuid(module->GetId())
.SetBaseAddress(
base::StringPrintf("0x%" PRIxPTR, module->GetBaseAddress()))
.SetSize(static_cast<double>(module->GetSize()))
.Build());
}
*out_profile = Memory::SamplingProfile::Create()
.SetSamples(std::move(samples))
.SetModules(std::move(modules))
.Build();
return Response::Success();
}
Response MemoryHandler::SetPressureNotificationsSuppressed(
bool suppressed) {
base::MemoryPressureListener::SetNotificationsSuppressed(suppressed);
return Response::Success();
}
Response MemoryHandler::SimulatePressureNotification(
const std::string& level) {
base::MemoryPressureListener::MemoryPressureLevel parsed_level;
if (level == protocol::Memory::PressureLevelEnum::Moderate) {
parsed_level = base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE;
} else if (level == protocol::Memory::PressureLevelEnum::Critical) {
parsed_level = base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL;
} else {
return Response::InvalidParams(base::StringPrintf(
"Invalid memory pressure level '%s'", level.c_str()));
}
// Simulate memory pressure notification in the browser process.
base::MemoryPressureListener::SimulatePressureNotification(parsed_level);
return Response::Success();
}
void MemoryHandler::PrepareForLeakDetection(
std::unique_ptr<PrepareForLeakDetectionCallback> callback) {
if (prepare_for_leak_detection_callback_ ||
get_dom_counters_for_leak_detection_callback_) {
callback->sendFailure(
Response::ServerError(kAnotherLeakDetectionInProgress));
return;
}
RenderProcessHost* process = RenderProcessHost::FromID(process_host_id_);
if (!process) {
callback->sendFailure(Response::ServerError(kNoProcessToDetectLeaksIn));
return;
}
prepare_for_leak_detection_callback_ = std::move(callback);
RequestLeakDetection(process);
}
void MemoryHandler::GetDOMCountersForLeakDetection(
std::unique_ptr<GetDOMCountersForLeakDetectionCallback> callback) {
if (prepare_for_leak_detection_callback_ ||
get_dom_counters_for_leak_detection_callback_) {
callback->sendFailure(
Response::ServerError(kAnotherLeakDetectionInProgress));
return;
}
RenderProcessHost* process = RenderProcessHost::FromID(process_host_id_);
if (!process) {
callback->sendFailure(Response::ServerError(kNoProcessToDetectLeaksIn));
return;
}
get_dom_counters_for_leak_detection_callback_ = std::move(callback);
RequestLeakDetection(process);
}
void MemoryHandler::RequestLeakDetection(RenderProcessHost* process) {
process->BindReceiver(leak_detector_.BindNewPipeAndPassReceiver());
// Using base::Unretained(this) in the code below is safe because the
// callbacks are passed to the mojo remote member, so they are guaranteed
// not to survive this.
leak_detector_.set_disconnect_handler(base::BindOnce(
&MemoryHandler::OnLeakDetectorIsGone, base::Unretained(this)));
leak_detector_->PerformLeakDetection(base::BindOnce(
&MemoryHandler::OnLeakDetectionComplete, base::Unretained(this)));
}
void MemoryHandler::OnLeakDetectionComplete(
blink::mojom::LeakDetectionResultPtr result) {
if (prepare_for_leak_detection_callback_) {
prepare_for_leak_detection_callback_->sendSuccess();
prepare_for_leak_detection_callback_.reset();
}
if (get_dom_counters_for_leak_detection_callback_) {
if (result) {
get_dom_counters_for_leak_detection_callback_->sendSuccess(
GetDOMCounters(*result.get()));
} else {
get_dom_counters_for_leak_detection_callback_->sendFailure(
Response::ServerError(kFailedToRunLeakDetection));
}
get_dom_counters_for_leak_detection_callback_.reset();
}
leak_detector_.reset();
}
void MemoryHandler::OnLeakDetectorIsGone() {
if (prepare_for_leak_detection_callback_) {
prepare_for_leak_detection_callback_->sendFailure(
Response::ServerError(kFailedToRunLeakDetection));
prepare_for_leak_detection_callback_.reset();
}
if (get_dom_counters_for_leak_detection_callback_) {
get_dom_counters_for_leak_detection_callback_->sendFailure(
Response::ServerError(kFailedToRunLeakDetection));
get_dom_counters_for_leak_detection_callback_.reset();
}
leak_detector_.reset();
}
std::unique_ptr<protocol::Array<protocol::Memory::DOMCounter>>
MemoryHandler::GetDOMCounters(const blink::mojom::LeakDetectionResult& result) {
auto counters =
std::make_unique<protocol::Array<protocol::Memory::DOMCounter>>();
#define ADD_COUNTER(name) \
counters->emplace_back(protocol::Memory::DOMCounter::Create() \
.SetName(#name) \
.SetCount(result.number_of_##name) \
.Build());
ADD_COUNTER(live_audio_nodes)
ADD_COUNTER(live_documents)
ADD_COUNTER(live_nodes)
ADD_COUNTER(live_layout_objects)
ADD_COUNTER(live_resources)
ADD_COUNTER(live_context_lifecycle_state_observers)
ADD_COUNTER(live_frames)
ADD_COUNTER(live_v8_per_context_data)
ADD_COUNTER(worker_global_scopes)
ADD_COUNTER(live_ua_css_resources)
ADD_COUNTER(live_resource_fetchers)
#undef ADD_COUNTER
return counters;
}
} // namespace protocol
} // namespace content