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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/performance_manager/v8_memory/web_memory_impl.h"
#include <algorithm>
#include <memory>
#include <utility>
#include "base/check.h"
#include "base/command_line.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/ptr_util.h"
#include "components/performance_manager/public/graph/frame_node.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/page_node.h"
#include "components/performance_manager/public/graph/process_node.h"
#include "components/performance_manager/public/performance_manager.h"
#include "components/performance_manager/public/render_frame_host_proxy.h"
#include "components/performance_manager/public/v8_memory/web_memory.h"
#include "components/performance_manager/v8_memory/web_memory_aggregator.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace performance_manager {
namespace v8_memory {
namespace {
mojom::WebMemoryMeasurementPtr BuildMemoryUsageResult(
const blink::LocalFrameToken& frame_token,
const ProcessNode* process_node) {
const auto& frame_nodes = process_node->GetFrameNodes();
const auto it =
std::ranges::find(frame_nodes, frame_token, &FrameNode::GetFrameToken);
if (it == frame_nodes.end()) {
// The frame no longer exists.
return mojom::WebMemoryMeasurement::New();
}
return WebMemoryAggregator(*it).AggregateMeasureMemoryResult();
}
v8_memory::V8DetailedMemoryRequest::MeasurementMode
WebMeasurementModeToRequestMeasurementMode(
mojom::WebMemoryMeasurement::Mode mode) {
switch (mode) {
case mojom::WebMemoryMeasurement::Mode::kDefault:
return v8_memory::V8DetailedMemoryRequest::MeasurementMode::kDefault;
case mojom::WebMemoryMeasurement::Mode::kEager:
return v8_memory::V8DetailedMemoryRequest::MeasurementMode::
kEagerForTesting;
}
}
} // anonymous namespace
////////////////////////////////////////////////////////////////////////////////
// WebMemoryMeasurer
WebMemoryMeasurer::WebMemoryMeasurer(
const blink::LocalFrameToken& frame_token,
V8DetailedMemoryRequest::MeasurementMode mode,
MeasurementCallback callback)
: frame_token_(frame_token),
callback_(std::move(callback)),
request_(std::make_unique<V8DetailedMemoryRequestOneShot>(mode)) {}
WebMemoryMeasurer::~WebMemoryMeasurer() = default;
// static
void WebMemoryMeasurer::MeasureMemory(mojom::WebMemoryMeasurement::Mode mode,
MeasurementCallback callback,
const FrameNode* frame_node) {
// Can't use make_unique with a private constructor.
auto measurer = base::WrapUnique(new WebMemoryMeasurer(
frame_node->GetFrameToken(),
WebMeasurementModeToRequestMeasurementMode(mode), std::move(callback)));
// Create a measurement complete callback to own |measurer|. It
// will be deleted when the callback is executed or dropped.
V8DetailedMemoryRequestOneShot* request = measurer->request();
auto measurement_complete_callback = base::BindOnce(
&WebMemoryMeasurer::MeasurementComplete, std::move(measurer));
// Start memory measurement for the process of the given frame.
request->StartMeasurement(frame_node->GetProcessNode(),
std::move(measurement_complete_callback));
}
void WebMemoryMeasurer::MeasurementComplete(
const ProcessNode* process_node,
const V8DetailedMemoryProcessData*) {
std::move(callback_).Run(BuildMemoryUsageResult(frame_token_, process_node));
}
////////////////////////////////////////////////////////////////////////////////
// WebMeasureMemorySecurityCheckerImpl
// Implements the public function in public/v8_memory/web_memory.h
std::unique_ptr<WebMeasureMemorySecurityChecker>
WebMeasureMemorySecurityChecker::Create() {
return std::make_unique<WebMeasureMemorySecurityCheckerImpl>();
}
bool WebMeasureMemorySecurityCheckerImpl::IsMeasureMemoryAllowed(
const FrameNode* frame) const {
// TODO(crbug.com/40132061): The frame may have navigated since it sent the
// measureMemory request. We could return true if the new document is allowed
// to measure memory, but the actual document that sent the request is not.
// If that happens the DocumentCoordinationUnit mojo interface is reset so
// the measurement result will be thrown away, so this is not a security
// issue, but it does mean doing extra work.
content::RenderFrameHost* rfh = frame->GetRenderFrameHostProxy().Get();
if (rfh->GetWebExposedIsolationLevel() !=
content::WebExposedIsolationLevel::kNotIsolated) {
return true;
}
return base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableWebSecurity);
}
////////////////////////////////////////////////////////////////////////////////
// Free functions
// Implements the public function in public/v8_memory/web_memory.h
void WebMeasureMemory(
const FrameNode* frame_node,
mojom::WebMemoryMeasurement::Mode mode,
std::unique_ptr<WebMeasureMemorySecurityChecker> security_checker,
base::OnceCallback<void(mojom::WebMemoryMeasurementPtr)> result_callback,
mojo::ReportBadMessageCallback bad_message_callback) {
DCHECK(frame_node);
DCHECK(security_checker);
// Validate that |frame_node| is allowed to measure memory, then start the
// measurement.
if (!security_checker->IsMeasureMemoryAllowed(frame_node)) {
std::move(bad_message_callback)
.Run("Requesting frame must be cross-origin isolated.");
return;
}
WebMemoryMeasurer::MeasureMemory(mode, std::move(result_callback),
frame_node);
}
} // namespace v8_memory
} // namespace performance_manager
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