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// Copyright 2020 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/performance_manager/v8_memory/web_memory_impl.h"
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/callback.h"
#include "base/check.h"
#include "base/command_line.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/browser_task_traits.h"
#include "content/public/browser/browser_thread.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 "third_party/blink/public/common/features.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::find_if(frame_nodes.begin(), frame_nodes.end(),
[frame_token](const FrameNode* node) {
return node->GetFrameToken() == frame_token;
});
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;
}
}
// Checks if the frame referenced by |rfh_proxy| is crossOriginIsolated. If so,
// invokes |measure_memory_callback| on the PM sequences. If not, invokes
// |bad_message_callback| instead. If the frame disappears at any point, does
// nothing.
void CheckIsCrossOriginIsolatedOnUISeq(
const RenderFrameHostProxy& rfh_proxy,
WebMeasureMemorySecurityChecker::MeasureMemoryCallback
measure_memory_callback,
mojo::ReportBadMessageCallback bad_message_callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
content::RenderFrameHost* rfh = rfh_proxy.Get();
if (!rfh) {
// Frame was deleted before the task ran.
return;
}
if (rfh->GetCrossOriginIsolationStatus() ==
content::RenderFrameHost::CrossOriginIsolationStatus::kNotIsolated &&
!base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableWebSecurity)) {
std::move(bad_message_callback)
.Run("Requesting frame must be cross-origin isolated.");
return;
}
PerformanceManager::CallOnGraph(
FROM_HERE,
base::BindOnce(std::move(measure_memory_callback),
PerformanceManager::GetFrameNodeForRenderFrameHost(rfh)));
}
} // 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,
base::WeakPtr<FrameNode> frame_node) {
if (!frame_node) {
// Frame was deleted while validating it on the UI sequence.
return;
}
// 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>();
}
void WebMeasureMemorySecurityCheckerImpl::CheckMeasureMemoryIsAllowed(
const FrameNode* frame,
MeasureMemoryCallback measure_memory_callback,
mojo::ReportBadMessageCallback bad_message_callback) const {
DCHECK(frame);
DCHECK_ON_GRAPH_SEQUENCE(frame->GetGraph());
// TODO(crbug/1085129): 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.
if (!base::FeatureList::IsEnabled(
blink::features::kWebMeasureMemoryViaPerformanceManager)) {
std::move(bad_message_callback)
.Run("WebMeasureMemoryViaPerformanceManager feature is disabled");
return;
}
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&CheckIsCrossOriginIsolatedOnUISeq,
frame->GetRenderFrameHostProxy(),
std::move(measure_memory_callback),
std::move(bad_message_callback)));
}
////////////////////////////////////////////////////////////////////////////////
// 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.
security_checker->CheckMeasureMemoryIsAllowed(
frame_node,
base::BindOnce(&WebMemoryMeasurer::MeasureMemory, mode,
std::move(result_callback)),
std::move(bad_message_callback));
}
} // namespace v8_memory
} // namespace performance_manager
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