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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/controller/oom_intervention_impl.h"
#include <unistd.h>
#include <utility>
#include "base/files/file_util.h"
#include "base/run_loop.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/common/oom_intervention/oom_intervention_types.h"
#include "third_party/blink/public/platform/scheduler/test/renderer_scheduler_test_support.h"
#include "third_party/blink/renderer/controller/crash_memory_metrics_reporter_impl.h"
#include "third_party/blink/renderer/core/exported/web_view_impl.h"
#include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
#include "third_party/blink/renderer/core/html/html_element.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/core/testing/dummy_page_holder.h"
#include "third_party/blink/renderer/core/testing/sim/sim_request.h"
#include "third_party/blink/renderer/platform/testing/task_environment.h"
#include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
#include "third_party/blink/renderer/platform/testing/url_test_helpers.h"
namespace blink {
namespace {
const uint64_t kTestPMFThreshold = 160 * 1024;
class MockOomInterventionHost : public mojom::blink::OomInterventionHost {
public:
MockOomInterventionHost(
mojo::PendingReceiver<mojom::blink::OomInterventionHost> receiver)
: receiver_(this, std::move(receiver)) {}
~MockOomInterventionHost() override = default;
void OnHighMemoryUsage() override {}
private:
mojo::Receiver<mojom::blink::OomInterventionHost> receiver_;
};
// Mock that allows setting mock memory usage.
class MockMemoryUsageMonitor : public MemoryUsageMonitor {
public:
MockMemoryUsageMonitor() = default;
MemoryUsage GetCurrentMemoryUsage() override { return mock_memory_usage_; }
// MemoryUsageMonitor will report the current memory usage as this value.
void SetMockMemoryUsage(MemoryUsage usage) { mock_memory_usage_ = usage; }
private:
MemoryUsage mock_memory_usage_;
};
// Mock intervention class that uses a mock MemoryUsageMonitor.
class MockOomInterventionImpl : public OomInterventionImpl {
public:
MockOomInterventionImpl()
: OomInterventionImpl(scheduler::GetSingleThreadTaskRunnerForTesting()),
mock_memory_usage_monitor_(std::make_unique<MockMemoryUsageMonitor>()) {
}
~MockOomInterventionImpl() override {}
MemoryUsageMonitor& MemoryUsageMonitorInstance() override {
return *mock_memory_usage_monitor_;
}
MockMemoryUsageMonitor* mock_memory_usage_monitor() {
return mock_memory_usage_monitor_.get();
}
private:
std::unique_ptr<OomInterventionMetrics> metrics_;
std::unique_ptr<MockMemoryUsageMonitor> mock_memory_usage_monitor_;
};
} // namespace
class OomInterventionImplTest : public testing::Test {
public:
void SetUp() override {
intervention_ = std::make_unique<MockOomInterventionImpl>();
}
Page* DetectOnceOnBlankPage() {
WebViewImpl* web_view = web_view_helper_.InitializeAndLoad("about:blank");
Page* page = web_view->MainFrameImpl()->GetFrame()->GetPage();
EXPECT_FALSE(page->Paused());
RunDetection(true, false, false);
return page;
}
void RunDetection(bool renderer_pause_enabled,
bool navigate_ads_enabled,
bool purge_v8_memory_enabled) {
mojo::PendingRemote<mojom::blink::OomInterventionHost> remote_host;
MockOomInterventionHost mock_host(
remote_host.InitWithNewPipeAndPassReceiver());
mojom::blink::DetectionArgsPtr args(mojom::blink::DetectionArgs::New());
args->private_footprint_threshold = kTestPMFThreshold;
intervention_->StartDetection(std::move(remote_host), std::move(args),
renderer_pause_enabled, navigate_ads_enabled,
purge_v8_memory_enabled);
test::RunDelayedTasks(base::Seconds(1));
}
protected:
test::TaskEnvironment task_environment_;
std::unique_ptr<MockOomInterventionImpl> intervention_;
frame_test_helpers::WebViewHelper web_view_helper_;
std::unique_ptr<SimRequest> main_resource_;
};
TEST_F(OomInterventionImplTest, NoDetectionOnBelowThreshold) {
MemoryUsage usage;
// Set value less than the threshold to not trigger intervention.
usage.private_footprint_bytes = kTestPMFThreshold - 1024;
usage.swap_bytes = 0;
usage.vm_size_bytes = 0;
intervention_->mock_memory_usage_monitor()->SetMockMemoryUsage(usage);
Page* page = DetectOnceOnBlankPage();
EXPECT_FALSE(page->Paused());
}
TEST_F(OomInterventionImplTest, PmfThresholdDetection) {
MemoryUsage usage;
// Set value more than the threshold to trigger intervention.
usage.private_footprint_bytes = kTestPMFThreshold + 1024;
usage.swap_bytes = 0;
usage.vm_size_bytes = 0;
intervention_->mock_memory_usage_monitor()->SetMockMemoryUsage(usage);
Page* page = DetectOnceOnBlankPage();
EXPECT_TRUE(page->Paused());
intervention_.reset();
EXPECT_FALSE(page->Paused());
}
TEST_F(OomInterventionImplTest, StopWatchingAfterDetection) {
MemoryUsage usage;
// Set value more than the threshold to trigger intervention.
usage.private_footprint_bytes = kTestPMFThreshold + 1024;
usage.swap_bytes = 0;
usage.vm_size_bytes = 0;
intervention_->mock_memory_usage_monitor()->SetMockMemoryUsage(usage);
DetectOnceOnBlankPage();
EXPECT_FALSE(intervention_->mock_memory_usage_monitor()->HasObserver(
intervention_.get()));
}
TEST_F(OomInterventionImplTest, ContinueWatchingWithoutDetection) {
MemoryUsage usage;
// Set value less than the threshold to not trigger intervention.
usage.private_footprint_bytes = 0;
usage.swap_bytes = 0;
usage.vm_size_bytes = 0;
intervention_->mock_memory_usage_monitor()->SetMockMemoryUsage(usage);
DetectOnceOnBlankPage();
EXPECT_TRUE(intervention_->mock_memory_usage_monitor()->HasObserver(
intervention_.get()));
}
// TODO(yuzus): Once OOPIF unit test infrastructure is ready, add a test case
// with OOPIF enabled.
TEST_F(OomInterventionImplTest, V1DetectionAdsNavigation) {
MemoryUsage usage;
// Set value more than the threshold to trigger intervention.
usage.private_footprint_bytes = kTestPMFThreshold + 1024;
usage.swap_bytes = 0;
usage.vm_size_bytes = 0;
intervention_->mock_memory_usage_monitor()->SetMockMemoryUsage(usage);
WebViewImpl* web_view = web_view_helper_.InitializeAndLoad("about:blank");
Page* page = web_view->MainFrameImpl()->GetFrame()->GetPage();
web_view->MainFrameImpl()->GetFrame()->GetDocument()->body()->setInnerHTML(
"<iframe name='ad' src='data:text/html,'></iframe><iframe "
"name='non-ad' src='data:text/html,'>");
WebFrame* ad_iframe = web_view_helper_.LocalMainFrame()->FindFrameByName(
WebString::FromUTF8("ad"));
WebFrame* non_ad_iframe = web_view_helper_.LocalMainFrame()->FindFrameByName(
WebString::FromUTF8("non-ad"));
frame_test_helpers::PumpPendingRequestsForFrameToLoad(
ad_iframe->ToWebLocalFrame());
frame_test_helpers::PumpPendingRequestsForFrameToLoad(
non_ad_iframe->ToWebLocalFrame());
blink::FrameAdEvidence ad_evidence(/*parent_is_ad=*/false);
ad_evidence.set_created_by_ad_script(
mojom::FrameCreationStackEvidence::kCreatedByAdScript);
ad_evidence.set_is_complete();
auto* local_adframe = To<LocalFrame>(WebFrame::ToCoreFrame(*ad_iframe));
local_adframe->SetAdEvidence(ad_evidence);
auto* local_non_adframe =
To<LocalFrame>(WebFrame::ToCoreFrame(*non_ad_iframe));
EXPECT_TRUE(local_adframe->IsAdFrame());
EXPECT_FALSE(local_non_adframe->IsAdFrame());
EXPECT_EQ(local_adframe->GetDocument()->Url().GetString(), "data:text/html,");
EXPECT_EQ(local_non_adframe->GetDocument()->Url().GetString(),
"data:text/html,");
RunDetection(true, true, false);
EXPECT_TRUE(page->Paused());
intervention_.reset();
// The about:blank navigation won't actually happen until the page unpauses.
frame_test_helpers::PumpPendingRequestsForFrameToLoad(
ad_iframe->ToWebLocalFrame());
EXPECT_EQ(local_adframe->GetDocument()->Url().GetString(), "about:blank");
EXPECT_NE(local_non_adframe->GetDocument()->Url().GetString(), "about:blank");
}
TEST_F(OomInterventionImplTest, V2DetectionV8PurgeMemory) {
MemoryUsage usage;
// Set value more than the threshold to trigger intervention.
usage.private_footprint_bytes = kTestPMFThreshold + 1024;
usage.swap_bytes = 0;
usage.vm_size_bytes = 0;
intervention_->mock_memory_usage_monitor()->SetMockMemoryUsage(usage);
WebViewImpl* web_view = web_view_helper_.InitializeAndLoad("about:blank");
Page* page = web_view->MainFrameImpl()->GetFrame()->GetPage();
auto* frame = To<LocalFrame>(page->MainFrame());
EXPECT_FALSE(frame->DomWindow()->IsContextDestroyed());
RunDetection(true, true, true);
EXPECT_TRUE(frame->DomWindow()->IsContextDestroyed());
}
} // namespace blink
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