blob: dfb76bd38d11b23b389e1ce0779e7a8c67971af5 [file] [log] [blame]
// Copyright 2011 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 "cc/scheduler/scheduler.h"
#include <string>
#include <vector>
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/numerics/safe_conversions.h"
#include "base/run_loop.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "cc/test/begin_frame_args_test.h"
#include "cc/test/ordered_simple_task_runner.h"
#include "cc/test/scheduler_test_common.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#define EXPECT_ACTION(action, client, action_index, expected_num_actions) \
do { \
EXPECT_EQ(expected_num_actions, client->num_actions_()); \
if (action_index >= 0) { \
ASSERT_LT(action_index, client->num_actions_()) << scheduler_.get(); \
EXPECT_STREQ(action, client->Action(action_index)); \
} \
for (int i = expected_num_actions; i < client->num_actions_(); ++i) \
ADD_FAILURE() << "Unexpected action: " << client->Action(i) \
<< " with state:\n" << client->StateForAction(i); \
} while (false)
#define EXPECT_NO_ACTION(client) EXPECT_ACTION("", client, -1, 0)
#define EXPECT_SINGLE_ACTION(action, client) \
EXPECT_ACTION(action, client, 0, 1)
#define EXPECT_SCOPED(statements) \
{ \
SCOPED_TRACE(""); \
statements; \
}
namespace cc {
namespace {
class FakeSchedulerClient : public SchedulerClient {
public:
FakeSchedulerClient()
: automatic_swap_ack_(true),
scheduler_(nullptr) {
Reset();
}
void Reset() {
actions_.clear();
states_.clear();
draw_will_happen_ = true;
swap_will_happen_if_draw_happens_ = true;
num_draws_ = 0;
begin_frame_args_sent_to_children_ = BeginFrameArgs();
}
void set_scheduler(TestScheduler* scheduler) { scheduler_ = scheduler; }
bool needs_begin_frames() {
return scheduler_->frame_source().NeedsBeginFrames();
}
int num_draws() const { return num_draws_; }
int num_actions_() const { return static_cast<int>(actions_.size()); }
const char* Action(int i) const { return actions_[i]; }
std::string StateForAction(int i) const { return states_[i]->ToString(); }
base::TimeTicks posted_begin_impl_frame_deadline() const {
return posted_begin_impl_frame_deadline_;
}
int ActionIndex(const char* action) const {
for (size_t i = 0; i < actions_.size(); i++)
if (!strcmp(actions_[i], action))
return base::checked_cast<int>(i);
return -1;
}
bool HasAction(const char* action) const {
return ActionIndex(action) >= 0;
}
void SetDrawWillHappen(bool draw_will_happen) {
draw_will_happen_ = draw_will_happen;
}
void SetSwapWillHappenIfDrawHappens(bool swap_will_happen_if_draw_happens) {
swap_will_happen_if_draw_happens_ = swap_will_happen_if_draw_happens;
}
void SetAutomaticSwapAck(bool automatic_swap_ack) {
automatic_swap_ack_ = automatic_swap_ack;
}
// SchedulerClient implementation.
void WillBeginImplFrame(const BeginFrameArgs& args) override {
PushAction("WillBeginImplFrame");
}
void DidFinishImplFrame() override {}
void ScheduledActionSendBeginMainFrame() override {
PushAction("ScheduledActionSendBeginMainFrame");
}
void ScheduledActionAnimate() override {
PushAction("ScheduledActionAnimate");
}
DrawResult ScheduledActionDrawAndSwapIfPossible() override {
PushAction("ScheduledActionDrawAndSwapIfPossible");
num_draws_++;
DrawResult result =
draw_will_happen_ ? DRAW_SUCCESS : DRAW_ABORTED_CHECKERBOARD_ANIMATIONS;
bool swap_will_happen =
draw_will_happen_ && swap_will_happen_if_draw_happens_;
if (swap_will_happen) {
scheduler_->DidSwapBuffers();
if (automatic_swap_ack_)
scheduler_->DidSwapBuffersComplete();
}
return result;
}
DrawResult ScheduledActionDrawAndSwapForced() override {
PushAction("ScheduledActionDrawAndSwapForced");
return DRAW_SUCCESS;
}
void ScheduledActionCommit() override {
PushAction("ScheduledActionCommit");
scheduler_->DidCommit();
}
void ScheduledActionActivateSyncTree() override {
PushAction("ScheduledActionActivateSyncTree");
}
void ScheduledActionBeginOutputSurfaceCreation() override {
PushAction("ScheduledActionBeginOutputSurfaceCreation");
}
void ScheduledActionPrepareTiles() override {
PushAction("ScheduledActionPrepareTiles");
scheduler_->WillPrepareTiles();
scheduler_->DidPrepareTiles();
}
void ScheduledActionInvalidateOutputSurface() override {
actions_.push_back("ScheduledActionInvalidateOutputSurface");
states_.push_back(scheduler_->AsValue());
}
void SendBeginFramesToChildren(const BeginFrameArgs& args) override {
begin_frame_args_sent_to_children_ = args;
}
void SendBeginMainFrameNotExpectedSoon() override {
PushAction("SendBeginMainFrameNotExpectedSoon");
}
base::Callback<bool(void)> ImplFrameDeadlinePending(bool state) {
return base::Bind(&FakeSchedulerClient::ImplFrameDeadlinePendingCallback,
base::Unretained(this),
state);
}
bool begin_frame_is_sent_to_children() const {
return begin_frame_args_sent_to_children_.IsValid();
}
const BeginFrameArgs& begin_frame_args_sent_to_children() const {
return begin_frame_args_sent_to_children_;
}
void PushAction(const char* description) {
actions_.push_back(description);
states_.push_back(scheduler_->AsValue());
}
protected:
bool ImplFrameDeadlinePendingCallback(bool state) {
return scheduler_->BeginImplFrameDeadlinePending() == state;
}
bool draw_will_happen_;
bool swap_will_happen_if_draw_happens_;
bool automatic_swap_ack_;
int num_draws_;
BeginFrameArgs begin_frame_args_sent_to_children_;
base::TimeTicks posted_begin_impl_frame_deadline_;
std::vector<const char*> actions_;
std::vector<scoped_refptr<base::trace_event::ConvertableToTraceFormat>>
states_;
TestScheduler* scheduler_;
};
class FakeExternalBeginFrameSource : public BeginFrameSourceBase {
public:
explicit FakeExternalBeginFrameSource(FakeSchedulerClient* client)
: client_(client) {}
~FakeExternalBeginFrameSource() override {}
void OnNeedsBeginFramesChange(bool needs_begin_frames) override {
if (needs_begin_frames) {
client_->PushAction("SetNeedsBeginFrames(true)");
} else {
client_->PushAction("SetNeedsBeginFrames(false)");
}
}
void TestOnBeginFrame(const BeginFrameArgs& args) {
return CallOnBeginFrame(args);
}
private:
FakeSchedulerClient* client_;
};
class SchedulerTest : public testing::Test {
public:
SchedulerTest()
: now_src_(new base::SimpleTestTickClock()),
task_runner_(new OrderedSimpleTaskRunner(now_src_.get(), true)),
fake_external_begin_frame_source_(nullptr) {
now_src_->Advance(base::TimeDelta::FromMicroseconds(10000));
// A bunch of tests require NowTicks()
// to be > BeginFrameArgs::DefaultInterval()
now_src_->Advance(base::TimeDelta::FromMilliseconds(100));
// Fail if we need to run 100 tasks in a row.
task_runner_->SetRunTaskLimit(100);
}
~SchedulerTest() override {}
protected:
TestScheduler* CreateScheduler() {
if (scheduler_settings_.use_external_begin_frame_source) {
fake_external_begin_frame_source_.reset(
new FakeExternalBeginFrameSource(client_.get()));
}
scoped_ptr<FakeCompositorTimingHistory> fake_compositor_timing_history =
FakeCompositorTimingHistory::Create();
fake_compositor_timing_history_ = fake_compositor_timing_history.get();
scheduler_ = TestScheduler::Create(
now_src_.get(), client_.get(), scheduler_settings_, 0,
task_runner_.get(), fake_external_begin_frame_source_.get(),
fake_compositor_timing_history.Pass());
DCHECK(scheduler_);
client_->set_scheduler(scheduler_.get());
// Use large estimates by default to avoid latency recovery
// in most tests.
base::TimeDelta slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(slow_duration);
return scheduler_.get();
}
void CreateSchedulerAndInitSurface() {
CreateScheduler();
EXPECT_SCOPED(InitializeOutputSurfaceAndFirstCommit());
}
void SetUpScheduler(bool initSurface) {
SetUpScheduler(make_scoped_ptr(new FakeSchedulerClient), initSurface);
}
void SetUpScheduler(scoped_ptr<FakeSchedulerClient> client,
bool initSurface) {
client_ = client.Pass();
if (initSurface)
CreateSchedulerAndInitSurface();
else
CreateScheduler();
}
OrderedSimpleTaskRunner& task_runner() { return *task_runner_; }
base::SimpleTestTickClock* now_src() { return now_src_.get(); }
// As this function contains EXPECT macros, to allow debugging it should be
// called inside EXPECT_SCOPED like so;
// EXPECT_SCOPED(client.InitializeOutputSurfaceAndFirstCommit(scheduler));
void InitializeOutputSurfaceAndFirstCommit() {
TRACE_EVENT0("cc",
"SchedulerUnitTest::InitializeOutputSurfaceAndFirstCommit");
DCHECK(scheduler_);
// Check the client doesn't have any actions queued when calling this
// function.
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(client_->needs_begin_frames());
// Start the initial output surface creation.
EXPECT_FALSE(scheduler_->CanStart());
scheduler_->SetCanStart();
scheduler_->SetVisible(true);
scheduler_->SetCanDraw(true);
EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_);
client_->Reset();
// We don't see anything happening until the first impl frame.
scheduler_->DidCreateAndInitializeOutputSurface();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(client_->needs_begin_frames());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
{
SCOPED_TRACE("Do first frame to commit after initialize.");
AdvanceFrame();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
scheduler_->NotifyReadyToDraw();
EXPECT_FALSE(scheduler_->CommitPending());
if (scheduler_settings_.using_synchronous_renderer_compositor) {
scheduler_->SetNeedsRedraw();
scheduler_->OnDrawForOutputSurface();
} else {
// Run the posted deadline task.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
}
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
}
client_->Reset();
{
SCOPED_TRACE(
"Run second frame so Scheduler calls SetNeedsBeginFrame(false).");
AdvanceFrame();
if (!scheduler_settings_.using_synchronous_renderer_compositor) {
// Run the posted deadline task.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
}
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
}
EXPECT_FALSE(client_->needs_begin_frames());
client_->Reset();
}
// As this function contains EXPECT macros, to allow debugging it should be
// called inside EXPECT_SCOPED like so;
// EXPECT_SCOPED(client.AdvanceFrame());
void AdvanceFrame() {
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug.scheduler.frames"),
"FakeSchedulerClient::AdvanceFrame");
// Consume any previous deadline first, if no deadline is currently
// pending, ImplFrameDeadlinePending will return false straight away and we
// will run no tasks.
task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// Send the next BeginFrame message if using an external source, otherwise
// it will be already in the task queue.
if (scheduler_->settings().use_external_begin_frame_source &&
scheduler_->FrameProductionThrottled()) {
EXPECT_TRUE(client_->needs_begin_frames());
SendNextBeginFrame();
}
if (!scheduler_->settings().using_synchronous_renderer_compositor) {
// Then run tasks until new deadline is scheduled.
EXPECT_TRUE(task_runner_->RunTasksWhile(
client_->ImplFrameDeadlinePending(false)));
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
}
}
BeginFrameArgs SendNextBeginFrame() {
DCHECK(scheduler_->settings().use_external_begin_frame_source);
// Creep the time forward so that any BeginFrameArgs is not equal to the
// last one otherwise we violate the BeginFrameSource contract.
now_src_->Advance(BeginFrameArgs::DefaultInterval());
BeginFrameArgs args =
CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, now_src());
fake_external_begin_frame_source_->TestOnBeginFrame(args);
return args;
}
FakeExternalBeginFrameSource* fake_external_begin_frame_source() const {
return fake_external_begin_frame_source_.get();
}
void CheckMainFrameSkippedAfterLateCommit(bool expect_send_begin_main_frame);
void ImplFrameSkippedAfterLateSwapAck(bool swap_ack_before_deadline);
void ImplFrameIsNotSkippedAfterLateSwapAck();
void BeginFramesNotFromClient(bool use_external_begin_frame_source,
bool throttle_frame_production);
void BeginFramesNotFromClient_SwapThrottled(
bool use_external_begin_frame_source,
bool throttle_frame_production);
scoped_ptr<base::SimpleTestTickClock> now_src_;
scoped_refptr<OrderedSimpleTaskRunner> task_runner_;
scoped_ptr<FakeExternalBeginFrameSource> fake_external_begin_frame_source_;
SchedulerSettings scheduler_settings_;
scoped_ptr<FakeSchedulerClient> client_;
scoped_ptr<TestScheduler> scheduler_;
FakeCompositorTimingHistory* fake_compositor_timing_history_;
};
TEST_F(SchedulerTest, InitializeOutputSurfaceDoesNotBeginImplFrame) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(false);
scheduler_->SetCanStart();
scheduler_->SetVisible(true);
scheduler_->SetCanDraw(true);
EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_);
client_->Reset();
scheduler_->DidCreateAndInitializeOutputSurface();
EXPECT_NO_ACTION(client_);
}
TEST_F(SchedulerTest, SendBeginFramesToChildren) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
EXPECT_FALSE(client_->begin_frame_is_sent_to_children());
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
EXPECT_TRUE(client_->needs_begin_frames());
scheduler_->SetChildrenNeedBeginFrames(true);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(client_->begin_frame_is_sent_to_children());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(client_->needs_begin_frames());
}
TEST_F(SchedulerTest, SendBeginFramesToChildrenWithoutCommit) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
EXPECT_FALSE(client_->needs_begin_frames());
scheduler_->SetChildrenNeedBeginFrames(true);
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(client_->begin_frame_is_sent_to_children());
}
TEST_F(SchedulerTest, SendBeginFramesToChildrenDeadlineNotAdjusted) {
// Set up client with specified estimates.
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
fake_compositor_timing_history_->SetBeginMainFrameToCommitDurationEstimate(
base::TimeDelta::FromMilliseconds(2));
fake_compositor_timing_history_->SetCommitToReadyToActivateDurationEstimate(
base::TimeDelta::FromMilliseconds(4));
fake_compositor_timing_history_->SetDrawDurationEstimate(
base::TimeDelta::FromMilliseconds(1));
EXPECT_FALSE(client_->needs_begin_frames());
scheduler_->SetChildrenNeedBeginFrames(true);
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
BeginFrameArgs frame_args =
CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, now_src());
fake_external_begin_frame_source()->TestOnBeginFrame(frame_args);
EXPECT_TRUE(client_->begin_frame_is_sent_to_children());
EXPECT_EQ(client_->begin_frame_args_sent_to_children().deadline,
frame_args.deadline);
}
TEST_F(SchedulerTest, VideoNeedsBeginFrames) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetVideoNeedsBeginFrames(true);
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
// WillBeginImplFrame is responsible for sending BeginFrames to video.
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
client_->Reset();
scheduler_->SetVideoNeedsBeginFrames(false);
EXPECT_NO_ACTION(client_);
client_->Reset();
task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
EXPECT_FALSE(client_->needs_begin_frames());
}
TEST_F(SchedulerTest, RequestCommit) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// If we don't swap on the deadline, we wait for the next BeginFrame.
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// NotifyReadyToCommit should trigger the commit.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// NotifyReadyToActivate should trigger the activation.
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// BeginImplFrame should prepare the draw.
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// BeginImplFrame deadline should draw.
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// The following BeginImplFrame deadline should SetNeedsBeginFrame(false)
// to avoid excessive toggles.
EXPECT_SCOPED(AdvanceFrame());
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
client_->Reset();
}
TEST_F(SchedulerTest, RequestCommitAfterSetDeferCommit) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetDeferCommits(true);
scheduler_->SetNeedsBeginMainFrame();
EXPECT_NO_ACTION(client_);
client_->Reset();
task_runner().RunPendingTasks();
// There are no pending tasks or actions.
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(client_->needs_begin_frames());
client_->Reset();
scheduler_->SetDeferCommits(false);
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
// Start new BeginMainFrame after defer commit is off.
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
}
TEST_F(SchedulerTest, DeferCommitWithRedraw) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetDeferCommits(true);
scheduler_->SetNeedsBeginMainFrame();
EXPECT_NO_ACTION(client_);
// The SetNeedsRedraw will override the SetDeferCommits(true), to allow a
// begin frame to be needed.
client_->Reset();
scheduler_->SetNeedsRedraw();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
AdvanceFrame();
// BeginMainFrame is not sent during the defer commit is on.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
AdvanceFrame();
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
}
TEST_F(SchedulerTest, RequestCommitAfterBeginMainFrameSent) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// SetNeedsBeginMainFrame should begin the frame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Now SetNeedsBeginMainFrame again. Calling here means we need a second
// commit.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_EQ(client_->num_actions_(), 0);
client_->Reset();
// Finish the first commit.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// Activate it.
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("ScheduledActionAnimate", client_, 0, 2);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 1, 2);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// Because we just swapped, the Scheduler should also request the next
// BeginImplFrame from the OutputSurface.
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Since another commit is needed, the next BeginImplFrame should initiate
// the second commit.
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// Finishing the commit before the deadline should post a new deadline task
// to trigger the deadline early.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("ScheduledActionAnimate", client_, 0, 2);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 1, 2);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// On the next BeginImplFrame, verify we go back to a quiescent state and
// no longer request BeginImplFrames.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_FALSE(client_->needs_begin_frames());
client_->Reset();
}
class SchedulerClientThatsetNeedsDrawInsideDraw : public FakeSchedulerClient {
public:
SchedulerClientThatsetNeedsDrawInsideDraw()
: FakeSchedulerClient(), request_redraws_(false) {}
void SetRequestRedrawsInsideDraw(bool enable) { request_redraws_ = enable; }
DrawResult ScheduledActionDrawAndSwapIfPossible() override {
// Only SetNeedsRedraw the first time this is called
if (request_redraws_) {
scheduler_->SetNeedsRedraw();
}
return FakeSchedulerClient::ScheduledActionDrawAndSwapIfPossible();
}
DrawResult ScheduledActionDrawAndSwapForced() override {
NOTREACHED();
return DRAW_SUCCESS;
}
private:
bool request_redraws_;
};
// Tests for two different situations:
// 1. the scheduler dropping SetNeedsRedraw requests that happen inside
// a ScheduledActionDrawAndSwap
// 2. the scheduler drawing twice inside a single tick
TEST_F(SchedulerTest, RequestRedrawInsideDraw) {
SchedulerClientThatsetNeedsDrawInsideDraw* client =
new SchedulerClientThatsetNeedsDrawInsideDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
client->SetRequestRedrawsInsideDraw(true);
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_EQ(0, client->num_draws());
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
client->SetRequestRedrawsInsideDraw(false);
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client_->num_draws());
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
// We stop requesting BeginImplFrames after a BeginImplFrame where we don't
// swap.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client->num_draws());
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(client->needs_begin_frames());
}
// Test that requesting redraw inside a failed draw doesn't lose the request.
TEST_F(SchedulerTest, RequestRedrawInsideFailedDraw) {
SchedulerClientThatsetNeedsDrawInsideDraw* client =
new SchedulerClientThatsetNeedsDrawInsideDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
client->SetRequestRedrawsInsideDraw(true);
client->SetDrawWillHappen(false);
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_EQ(0, client->num_draws());
// Fail the draw.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
// We have a commit pending and the draw failed, and we didn't lose the redraw
// request.
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
client->SetRequestRedrawsInsideDraw(false);
// Fail the draw again.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client->num_draws());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
// Draw successfully.
client->SetDrawWillHappen(true);
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(3, client->num_draws());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
}
class SchedulerClientThatSetNeedsBeginMainFrameInsideDraw
: public FakeSchedulerClient {
public:
SchedulerClientThatSetNeedsBeginMainFrameInsideDraw()
: set_needs_commit_on_next_draw_(false) {}
DrawResult ScheduledActionDrawAndSwapIfPossible() override {
// Only SetNeedsBeginMainFrame the first time this is called
if (set_needs_commit_on_next_draw_) {
scheduler_->SetNeedsBeginMainFrame();
set_needs_commit_on_next_draw_ = false;
}
return FakeSchedulerClient::ScheduledActionDrawAndSwapIfPossible();
}
DrawResult ScheduledActionDrawAndSwapForced() override {
NOTREACHED();
return DRAW_SUCCESS;
}
void SetNeedsBeginMainFrameOnNextDraw() {
set_needs_commit_on_next_draw_ = true;
}
private:
bool set_needs_commit_on_next_draw_;
};
// Tests for the scheduler infinite-looping on SetNeedsBeginMainFrame requests
// that happen inside a ScheduledActionDrawAndSwap
TEST_F(SchedulerTest, RequestCommitInsideDraw) {
SchedulerClientThatSetNeedsBeginMainFrameInsideDraw* client =
new SchedulerClientThatSetNeedsBeginMainFrameInsideDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
EXPECT_FALSE(client->needs_begin_frames());
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_EQ(0, client->num_draws());
EXPECT_TRUE(client->needs_begin_frames());
client->SetNeedsBeginMainFrameOnNextDraw();
EXPECT_SCOPED(AdvanceFrame());
client->SetNeedsBeginMainFrameOnNextDraw();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(client->needs_begin_frames());
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client->num_draws());
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->CommitPending());
EXPECT_TRUE(client->needs_begin_frames());
// We stop requesting BeginImplFrames after a BeginImplFrame where we don't
// swap.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client->num_draws());
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->CommitPending());
EXPECT_FALSE(client->needs_begin_frames());
}
// Tests that when a draw fails then the pending commit should not be dropped.
TEST_F(SchedulerTest, RequestCommitInsideFailedDraw) {
SchedulerClientThatsetNeedsDrawInsideDraw* client =
new SchedulerClientThatsetNeedsDrawInsideDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
client->SetDrawWillHappen(false);
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_EQ(0, client->num_draws());
// Fail the draw.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
// We have a commit pending and the draw failed, and we didn't lose the commit
// request.
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
// Fail the draw again.
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client->num_draws());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
// Draw successfully.
client->SetDrawWillHappen(true);
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(3, client->num_draws());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
}
TEST_F(SchedulerTest, NoSwapWhenDrawFails) {
SchedulerClientThatSetNeedsBeginMainFrameInsideDraw* client =
new SchedulerClientThatSetNeedsBeginMainFrameInsideDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_EQ(0, client->num_draws());
// Draw successfully, this starts a new frame.
client->SetNeedsBeginMainFrameOnNextDraw();
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(client->needs_begin_frames());
// Fail to draw, this should not start a frame.
client->SetDrawWillHappen(false);
client->SetNeedsBeginMainFrameOnNextDraw();
EXPECT_SCOPED(AdvanceFrame());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(2, client->num_draws());
}
class SchedulerClientNeedsPrepareTilesInDraw : public FakeSchedulerClient {
public:
DrawResult ScheduledActionDrawAndSwapIfPossible() override {
scheduler_->SetNeedsPrepareTiles();
return FakeSchedulerClient::ScheduledActionDrawAndSwapIfPossible();
}
};
// Test prepare tiles is independant of draws.
TEST_F(SchedulerTest, PrepareTiles) {
SchedulerClientNeedsPrepareTilesInDraw* client =
new SchedulerClientNeedsPrepareTilesInDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
// Request both draw and prepare tiles. PrepareTiles shouldn't
// be trigged until BeginImplFrame.
client->Reset();
scheduler_->SetNeedsPrepareTiles();
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_TRUE(scheduler_->PrepareTilesPending());
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_EQ(0, client->num_draws());
EXPECT_FALSE(client->HasAction("ScheduledActionPrepareTiles"));
EXPECT_FALSE(client->HasAction("ScheduledActionDrawAndSwapIfPossible"));
// We have no immediate actions to perform, so the BeginImplFrame should post
// the deadline task.
client->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
// On the deadline, he actions should have occured in the right order.
client->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
EXPECT_TRUE(client->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_TRUE(client->HasAction("ScheduledActionPrepareTiles"));
EXPECT_LT(client->ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
client->ActionIndex("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->PrepareTilesPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// Request a draw. We don't need a PrepareTiles yet.
client->Reset();
scheduler_->SetNeedsRedraw();
EXPECT_TRUE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->PrepareTilesPending());
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_EQ(0, client->num_draws());
// We have no immediate actions to perform, so the BeginImplFrame should post
// the deadline task.
client->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
// Draw. The draw will trigger SetNeedsPrepareTiles, and
// then the PrepareTiles action will be triggered after the Draw.
// Afterwards, neither a draw nor PrepareTiles are pending.
client->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client->num_draws());
EXPECT_TRUE(client->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_TRUE(client->HasAction("ScheduledActionPrepareTiles"));
EXPECT_LT(client->ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
client->ActionIndex("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->PrepareTilesPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// We need a BeginImplFrame where we don't swap to go idle.
client->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_EQ(0, client->num_draws());
// Now trigger a PrepareTiles outside of a draw. We will then need
// a begin-frame for the PrepareTiles, but we don't need a draw.
client->Reset();
EXPECT_FALSE(client->needs_begin_frames());
scheduler_->SetNeedsPrepareTiles();
EXPECT_TRUE(client->needs_begin_frames());
EXPECT_TRUE(scheduler_->PrepareTilesPending());
EXPECT_FALSE(scheduler_->RedrawPending());
// BeginImplFrame. There will be no draw, only PrepareTiles.
client->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(0, client->num_draws());
EXPECT_FALSE(client->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_TRUE(client->HasAction("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
}
// Test that PrepareTiles only happens once per frame. If an external caller
// initiates it, then the state machine should not PrepareTiles on that frame.
TEST_F(SchedulerTest, PrepareTilesOncePerFrame) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// If DidPrepareTiles during a frame, then PrepareTiles should not occur
// again.
scheduler_->SetNeedsPrepareTiles();
scheduler_->SetNeedsRedraw();
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(scheduler_->PrepareTilesPending());
scheduler_->WillPrepareTiles();
scheduler_->DidPrepareTiles(); // An explicit PrepareTiles.
EXPECT_FALSE(scheduler_->PrepareTilesPending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client_->num_draws());
EXPECT_TRUE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_FALSE(client_->HasAction("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->PrepareTilesPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// Next frame without DidPrepareTiles should PrepareTiles with draw.
scheduler_->SetNeedsPrepareTiles();
scheduler_->SetNeedsRedraw();
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client_->num_draws());
EXPECT_TRUE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_TRUE(client_->HasAction("ScheduledActionPrepareTiles"));
EXPECT_LT(client_->ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
client_->ActionIndex("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->PrepareTilesPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// If we get another DidPrepareTiles within the same frame, we should
// not PrepareTiles on the next frame.
scheduler_->WillPrepareTiles();
scheduler_->DidPrepareTiles(); // An explicit PrepareTiles.
scheduler_->SetNeedsPrepareTiles();
scheduler_->SetNeedsRedraw();
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(scheduler_->PrepareTilesPending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client_->num_draws());
EXPECT_TRUE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_FALSE(client_->HasAction("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// If we get another DidPrepareTiles, we should not PrepareTiles on the next
// frame. This verifies we don't alternate calling PrepareTiles once and
// twice.
EXPECT_TRUE(scheduler_->PrepareTilesPending());
scheduler_->WillPrepareTiles();
scheduler_->DidPrepareTiles(); // An explicit PrepareTiles.
EXPECT_FALSE(scheduler_->PrepareTilesPending());
scheduler_->SetNeedsPrepareTiles();
scheduler_->SetNeedsRedraw();
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(scheduler_->PrepareTilesPending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client_->num_draws());
EXPECT_TRUE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_FALSE(client_->HasAction("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// Next frame without DidPrepareTiles should PrepareTiles with draw.
scheduler_->SetNeedsPrepareTiles();
scheduler_->SetNeedsRedraw();
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client_->num_draws());
EXPECT_TRUE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_TRUE(client_->HasAction("ScheduledActionPrepareTiles"));
EXPECT_LT(client_->ActionIndex("ScheduledActionDrawAndSwapIfPossible"),
client_->ActionIndex("ScheduledActionPrepareTiles"));
EXPECT_FALSE(scheduler_->RedrawPending());
EXPECT_FALSE(scheduler_->PrepareTilesPending());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
}
TEST_F(SchedulerTest, PrepareTilesFunnelResetOnVisibilityChange) {
scoped_ptr<SchedulerClientNeedsPrepareTilesInDraw> client =
make_scoped_ptr(new SchedulerClientNeedsPrepareTilesInDraw);
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(client.Pass(), true);
// Simulate a few visibility changes and associated PrepareTiles.
for (int i = 0; i < 10; i++) {
scheduler_->SetVisible(false);
scheduler_->WillPrepareTiles();
scheduler_->DidPrepareTiles();
scheduler_->SetVisible(true);
scheduler_->WillPrepareTiles();
scheduler_->DidPrepareTiles();
}
client_->Reset();
scheduler_->SetNeedsRedraw();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
AdvanceFrame();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 0, 2);
EXPECT_ACTION("ScheduledActionPrepareTiles", client_, 1, 2);
}
TEST_F(SchedulerTest, TriggerBeginFrameDeadlineEarly) {
SchedulerClientNeedsPrepareTilesInDraw* client =
new SchedulerClientNeedsPrepareTilesInDraw;
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame());
// The deadline should be zero since there is no work other than drawing
// pending.
EXPECT_EQ(base::TimeTicks(), client->posted_begin_impl_frame_deadline());
}
TEST_F(SchedulerTest, WaitForReadyToDrawDoNotPostDeadline) {
SchedulerClientNeedsPrepareTilesInDraw* client =
new SchedulerClientNeedsPrepareTilesInDraw;
scheduler_settings_.use_external_begin_frame_source = true;
scheduler_settings_.commit_to_active_tree = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
// Begin new frame.
EXPECT_SCOPED(AdvanceFrame());
scheduler_->NotifyBeginMainFrameStarted();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
client_->Reset();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
client_->Reset();
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
// Scheduler won't post deadline in the mode.
client_->Reset();
task_runner().RunPendingTasks(); // Try to run posted deadline.
// There is no posted deadline.
EXPECT_NO_ACTION(client_);
// Scheduler received ready to draw signal, and posted deadline.
scheduler_->NotifyReadyToDraw();
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_EQ(1, client_->num_draws());
EXPECT_TRUE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
}
TEST_F(SchedulerTest, WaitForReadyToDrawCancelledWhenLostOutputSurface) {
SchedulerClientNeedsPrepareTilesInDraw* client =
new SchedulerClientNeedsPrepareTilesInDraw;
scheduler_settings_.use_external_begin_frame_source = true;
scheduler_settings_.commit_to_active_tree = true;
SetUpScheduler(make_scoped_ptr(client).Pass(), true);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
// Begin new frame.
EXPECT_SCOPED(AdvanceFrame());
scheduler_->NotifyBeginMainFrameStarted();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
client_->Reset();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
client_->Reset();
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
// Scheduler won't post deadline in the mode.
client_->Reset();
task_runner().RunPendingTasks(); // Try to run posted deadline.
// There is no posted deadline.
EXPECT_NO_ACTION(client_);
// Scheduler loses output surface, and stops waiting for ready to draw signal.
client_->Reset();
scheduler_->DidLoseOutputSurface();
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_, 0, 3);
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 1, 3);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 2, 3);
}
void SchedulerTest::CheckMainFrameSkippedAfterLateCommit(
bool expect_send_begin_main_frame) {
// Impl thread hits deadline before commit finishes.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_SCOPED(AdvanceFrame());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 5);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 5);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 5);
EXPECT_ACTION("ScheduledActionCommit", client_, 3, 5);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 4, 5);
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_EQ(expect_send_begin_main_frame,
scheduler_->MainThreadMissedLastDeadline());
EXPECT_EQ(expect_send_begin_main_frame,
client_->HasAction("ScheduledActionSendBeginMainFrame"));
}
TEST_F(SchedulerTest, MainFrameSkippedAfterLateCommit) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
bool expect_send_begin_main_frame = false;
EXPECT_SCOPED(
CheckMainFrameSkippedAfterLateCommit(expect_send_begin_main_frame));
}
TEST_F(SchedulerTest,
MainFrameNotSkippedAfterLateCommitInPreferImplLatencyMode) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetImplLatencyTakesPriority(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
bool expect_send_begin_main_frame = true;
EXPECT_SCOPED(
CheckMainFrameSkippedAfterLateCommit(expect_send_begin_main_frame));
}
TEST_F(SchedulerTest,
MainFrameNotSkippedAfterLateCommit_CommitEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetBeginMainFrameToCommitDurationEstimate(
slow_duration);
bool expect_send_begin_main_frame = true;
EXPECT_SCOPED(
CheckMainFrameSkippedAfterLateCommit(expect_send_begin_main_frame));
}
TEST_F(SchedulerTest,
MainFrameNotSkippedAfterLateCommit_ReadyToActivateEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetCommitToReadyToActivateDurationEstimate(
slow_duration);
bool expect_send_begin_main_frame = true;
EXPECT_SCOPED(
CheckMainFrameSkippedAfterLateCommit(expect_send_begin_main_frame));
}
TEST_F(SchedulerTest,
MainFrameNotSkippedAfterLateCommit_ActivateEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetActivateDurationEstimate(slow_duration);
bool expect_send_begin_main_frame = true;
EXPECT_SCOPED(
CheckMainFrameSkippedAfterLateCommit(expect_send_begin_main_frame));
}
TEST_F(SchedulerTest, MainFrameNotSkippedAfterLateCommit_DrawEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetDrawDurationEstimate(slow_duration);
bool expect_send_begin_main_frame = true;
EXPECT_SCOPED(
CheckMainFrameSkippedAfterLateCommit(expect_send_begin_main_frame));
}
void SchedulerTest::ImplFrameSkippedAfterLateSwapAck(
bool swap_ack_before_deadline) {
// To get into a high latency state, this test disables automatic swap acks.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Draw and swap for first BeginFrame
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 4);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 4);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 4);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 3, 4);
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 4);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 4);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 4);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 3, 4);
// Verify we skip every other frame if the swap ack consistently
// comes back late.
for (int i = 0; i < 10; i++) {
// Not calling scheduler_->DidSwapBuffersComplete() until after next
// BeginImplFrame puts the impl thread in high latency mode.
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
// Verify that we skip the BeginImplFrame
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
// Verify that we do not perform any actions after we are no longer
// swap throttled.
client_->Reset();
if (swap_ack_before_deadline) {
// It shouldn't matter if the swap ack comes back before the deadline...
scheduler_->DidSwapBuffersComplete();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
} else {
// ... or after the deadline.
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
scheduler_->DidSwapBuffersComplete();
}
EXPECT_NO_ACTION(client_);
// Verify that we start the next BeginImplFrame and continue normally
// after having just skipped a BeginImplFrame.
client_->Reset();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 3);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 3);
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 4);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 4);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 4);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 3, 4);
}
}
TEST_F(SchedulerTest,
ImplFrameSkippedAfterLateSwapAck_FastEstimates_SwapAckThenDeadline) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
bool swap_ack_before_deadline = true;
EXPECT_SCOPED(ImplFrameSkippedAfterLateSwapAck(swap_ack_before_deadline));
}
TEST_F(SchedulerTest,
ImplFrameSkippedAfterLateSwapAck_FastEstimates_DeadlineThenSwapAck) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
bool swap_ack_before_deadline = false;
EXPECT_SCOPED(ImplFrameSkippedAfterLateSwapAck(swap_ack_before_deadline));
}
TEST_F(SchedulerTest,
ImplFrameSkippedAfterLateSwapAck_ImplLatencyTakesPriority) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// Even if every estimate related to the main thread is slow, we should
// still expect to recover impl thread latency if the draw is fast and we
// are in impl latency takes priority.
scheduler_->SetImplLatencyTakesPriority(true);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(slow_duration);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetDrawDurationEstimate(fast_duration);
bool swap_ack_before_deadline = false;
EXPECT_SCOPED(ImplFrameSkippedAfterLateSwapAck(swap_ack_before_deadline));
}
TEST_F(SchedulerTest,
ImplFrameSkippedAfterLateSwapAck_OnlyImplSideUpdatesExpected) {
// This tests that we recover impl thread latency when there are no commits.
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// To get into a high latency state, this test disables automatic swap acks.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Even if every estimate related to the main thread is slow, we should
// still expect to recover impl thread latency if there are no commits from
// the main thread.
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(slow_duration);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetDrawDurationEstimate(fast_duration);
// Draw and swap for first BeginFrame
client_->Reset();
scheduler_->SetNeedsRedraw();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 3);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 3);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 3);
client_->Reset();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
// Verify we skip every other frame if the swap ack consistently
// comes back late.
for (int i = 0; i < 10; i++) {
// Not calling scheduler_->DidSwapBuffersComplete() until after next
// BeginImplFrame puts the impl thread in high latency mode.
client_->Reset();
scheduler_->SetNeedsRedraw();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
// Verify that we skip the BeginImplFrame
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
// Verify that we do not perform any actions after we are no longer
// swap throttled.
client_->Reset();
scheduler_->DidSwapBuffersComplete();
EXPECT_NO_ACTION(client_);
// Verify that we start the next BeginImplFrame and continue normally
// after having just skipped a BeginImplFrame.
client_->Reset();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
client_->Reset();
// Deadline should be immediate.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunUntilTime(now_src_->NowTicks());
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
}
}
void SchedulerTest::ImplFrameIsNotSkippedAfterLateSwapAck() {
// To get into a high latency state, this test disables automatic swap acks.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Draw and swap for first BeginFrame
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 3);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 3);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 3);
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 4);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 4);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 4);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 3, 4);
// Verify impl thread consistently operates in high latency mode
// without skipping any frames.
for (int i = 0; i < 10; i++) {
// Not calling scheduler_->DidSwapBuffersComplete() until after next frame
// puts the impl thread in high latency mode.
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
client_->Reset();
scheduler_->DidSwapBuffersComplete();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
// Verify that we don't skip the actions of the BeginImplFrame
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 0, 5);
EXPECT_ACTION("ScheduledActionCommit", client_, 1, 5);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 2, 5);
EXPECT_ACTION("ScheduledActionAnimate", client_, 3, 5);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 4, 5);
}
}
TEST_F(SchedulerTest,
ImplFrameIsNotSkippedAfterLateSwapAck_CommitEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetBeginMainFrameToCommitDurationEstimate(
slow_duration);
EXPECT_SCOPED(ImplFrameIsNotSkippedAfterLateSwapAck());
}
TEST_F(SchedulerTest,
ImplFrameIsNotSkippedAfterLateSwapAck_ReadyToActivateEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetCommitToReadyToActivateDurationEstimate(
slow_duration);
EXPECT_SCOPED(ImplFrameIsNotSkippedAfterLateSwapAck());
}
TEST_F(SchedulerTest,
ImplFrameIsNotSkippedAfterLateSwapAck_ActivateEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetActivateDurationEstimate(slow_duration);
EXPECT_SCOPED(ImplFrameIsNotSkippedAfterLateSwapAck());
}
TEST_F(SchedulerTest,
ImplFrameIsNotSkippedAfterLateSwapAck_DrawEstimateTooLong) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetDrawDurationEstimate(slow_duration);
EXPECT_SCOPED(ImplFrameIsNotSkippedAfterLateSwapAck());
}
TEST_F(SchedulerTest,
MainFrameThenImplFrameSkippedAfterLateCommitAndLateSwapAck) {
// Set up client with custom estimates.
// This test starts off with expensive estimates to prevent latency recovery
// initially, then lowers the estimates to enable it once both the main
// and impl threads are in a high latency mode.
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
auto slow_duration = base::TimeDelta::FromSeconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(slow_duration);
// To get into a high latency state, this test disables automatic swap acks.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Impl thread hits deadline before commit finishes to make
// MainThreadMissedLastDeadline true
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_SCOPED(AdvanceFrame());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 5);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 5);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 5);
EXPECT_ACTION("ScheduledActionCommit", client_, 3, 5);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 4, 5);
// Draw and swap for first commit, start second commit.
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 6);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 6);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 6);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 3, 6);
EXPECT_ACTION("ScheduledActionCommit", client_, 4, 6);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 5, 6);
// Don't call scheduler_->DidSwapBuffersComplete() until after next frame
// to put the impl thread in a high latency mode.
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
// Note: BeginMainFrame and swap are skipped here because of
// swap ack backpressure, not because of latency recovery.
EXPECT_FALSE(client_->HasAction("ScheduledActionSendBeginMainFrame"));
EXPECT_FALSE(client_->HasAction("ScheduledActionDrawAndSwapIfPossible"));
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
// Lower estimates so that the scheduler will attempt latency recovery.
auto fast_duration = base::TimeDelta::FromMilliseconds(1);
fake_compositor_timing_history_->SetAllEstimatesTo(fast_duration);
// Now that both threads are in a high latency mode, make sure we
// skip the BeginMainFrame, then the BeginImplFrame, but not both
// at the same time.
// Verify we skip BeginMainFrame first.
client_->Reset();
// Previous commit request is still outstanding.
EXPECT_TRUE(scheduler_->NeedsBeginMainFrame());
EXPECT_TRUE(scheduler_->SwapThrottled());
SendNextBeginFrame();
EXPECT_TRUE(scheduler_->MainThreadMissedLastDeadline());
scheduler_->DidSwapBuffersComplete();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 3);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 2, 3);
// Verify we skip the BeginImplFrame second.
client_->Reset();
// Previous commit request is still outstanding.
EXPECT_TRUE(scheduler_->NeedsBeginMainFrame());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
scheduler_->DidSwapBuffersComplete();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_NO_ACTION(client_);
// Then verify we operate in a low latency mode.
client_->Reset();
// Previous commit request is still outstanding.
EXPECT_TRUE(scheduler_->NeedsBeginMainFrame());
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
SendNextBeginFrame();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
scheduler_->DidSwapBuffersComplete();
EXPECT_FALSE(scheduler_->MainThreadMissedLastDeadline());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 6);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 6);
EXPECT_ACTION("ScheduledActionCommit", client_, 2, 6);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 3, 6);
EXPECT_ACTION("ScheduledActionAnimate", client_, 4, 6);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 5, 6);
}
TEST_F(
SchedulerTest,
Deadlock_CommitMakesProgressWhileSwapTrottledAndActiveTreeNeedsFirstDraw) {
// NPAPI plugins on Windows block the Browser UI thread on the Renderer main
// thread. This prevents the scheduler from receiving any pending swap acks.
scheduler_settings_.use_external_begin_frame_source = true;
scheduler_settings_.main_frame_while_swap_throttled_enabled = true;
SetUpScheduler(true);
// Disables automatic swap acks so this test can force swap ack throttling
// to simulate a blocked Browser ui thread.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Get a new active tree in main-thread high latency mode and put us
// in a swap throttled state.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_FALSE(scheduler_->CommitPending());
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 7);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 7);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 7);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 3, 7);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 4, 7);
EXPECT_ACTION("ScheduledActionCommit", client_, 5, 7);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 6, 7);
// Make sure that we can finish the next commit even while swap throttled.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SCOPED(AdvanceFrame());
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 5);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 5);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 5);
EXPECT_ACTION("ScheduledActionCommit", client_, 3, 5);
EXPECT_ACTION("ScheduledActionAnimate", client_, 4, 5);
// Make sure we do not send a BeginMainFrame while swap throttled and
// we have both a pending tree and an active tree.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_FALSE(scheduler_->CommitPending());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
}
TEST_F(SchedulerTest,
Deadlock_NoBeginMainFrameWhileSwapTrottledAndPipelineFull) {
// NPAPI plugins on Windows block the Browser UI thread on the Renderer main
// thread. This prevents the scheduler from receiving any pending swap acks.
// This particular test makes sure we do not send a BeginMainFrame while
// swap trottled and we have a pending tree and active tree that
// still needs to be drawn for the first time.
scheduler_settings_.use_external_begin_frame_source = true;
scheduler_settings_.main_frame_while_swap_throttled_enabled = true;
scheduler_settings_.main_frame_before_activation_enabled = true;
SetUpScheduler(true);
// Disables automatic swap acks so this test can force swap ack throttling
// to simulate a blocked Browser ui thread.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Start a new commit in main-thread high latency mode and hold off on
// activation.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
scheduler_->DidSwapBuffersComplete();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_FALSE(scheduler_->CommitPending());
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 6);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 6);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 6);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 3, 6);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 4, 6);
EXPECT_ACTION("ScheduledActionCommit", client_, 5, 6);
// Start another commit while we still have aa pending tree.
// Enter a swap throttled state.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
scheduler_->NotifyBeginMainFrameStarted();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 4);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 4);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 4);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 3, 4);
// Can't commit yet because there's still a pending tree.
client_->Reset();
scheduler_->NotifyReadyToCommit();
EXPECT_NO_ACTION(client_);
// Activate the pending tree, which also unblocks the commit immediately.
client_->Reset();
scheduler_->NotifyReadyToActivate();
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 0, 2);
EXPECT_ACTION("ScheduledActionCommit", client_, 1, 2);
// Make sure we do not send a BeginMainFrame while swap throttled and
// we have both a pending tree and an active tree that still needs
// it's first draw.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_FALSE(scheduler_->CommitPending());
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
}
TEST_F(
SchedulerTest,
CommitMakesProgressWhenIdleAndHasPendingTreeAndActiveTreeNeedsFirstDraw) {
// This verifies we don't block commits longer than we need to
// for performance reasons - not deadlock reasons.
// Since we are simulating a long commit, set up a client with draw duration
// estimates that prevent skipping main frames to get to low latency mode.
scheduler_settings_.use_external_begin_frame_source = true;
scheduler_settings_.main_frame_while_swap_throttled_enabled = true;
scheduler_settings_.main_frame_before_activation_enabled = true;
SetUpScheduler(true);
// Disables automatic swap acks so this test can force swap ack throttling
// to simulate a blocked Browser ui thread.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// Start a new commit in main-thread high latency mode and hold off on
// activation.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
scheduler_->DidSwapBuffersComplete();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_FALSE(scheduler_->CommitPending());
EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 6);
EXPECT_ACTION("WillBeginImplFrame", client_, 1, 6);
EXPECT_ACTION("ScheduledActionAnimate", client_, 2, 6);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 3, 6);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 4, 6);
EXPECT_ACTION("ScheduledActionCommit", client_, 5, 6);
// Start another commit while we still have an active tree.
client_->Reset();
EXPECT_FALSE(scheduler_->CommitPending());
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_TRUE(scheduler_->CommitPending());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
scheduler_->DidSwapBuffersComplete();
scheduler_->NotifyBeginMainFrameStarted();
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 4);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 4);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 2, 4);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 3, 4);
// Can't commit yet because there's still a pending tree.
client_->Reset();
scheduler_->NotifyReadyToCommit();
EXPECT_NO_ACTION(client_);
// Activate the pending tree, which also unblocks the commit immediately
// while we are in an idle state.
client_->Reset();
scheduler_->NotifyReadyToActivate();
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 0, 2);
EXPECT_ACTION("ScheduledActionCommit", client_, 1, 2);
}
TEST_F(SchedulerTest, BeginRetroFrame) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
// Create a BeginFrame with a long deadline to avoid race conditions.
// This is the first BeginFrame, which will be handled immediately.
BeginFrameArgs args =
CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, now_src());
args.deadline += base::TimeDelta::FromHours(1);
fake_external_begin_frame_source()->TestOnBeginFrame(args);
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Queue BeginFrames while we are still handling the previous BeginFrame.
args.frame_time += base::TimeDelta::FromSeconds(1);
fake_external_begin_frame_source()->TestOnBeginFrame(args);
args.frame_time += base::TimeDelta::FromSeconds(1);
fake_external_begin_frame_source()->TestOnBeginFrame(args);
// If we don't swap on the deadline, we wait for the next BeginImplFrame.
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// NotifyReadyToCommit should trigger the commit.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// NotifyReadyToActivate should trigger the activation.
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// BeginImplFrame should prepare the draw.
task_runner().RunPendingTasks(); // Run posted BeginRetroFrame.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// BeginImplFrame deadline should draw.
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 0, 1);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// The following BeginImplFrame deadline should SetNeedsBeginFrame(false)
// to avoid excessive toggles.
task_runner().RunPendingTasks(); // Run posted BeginRetroFrame.
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
client_->Reset();
}
TEST_F(SchedulerTest, BeginRetroFrame_SwapThrottled) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetEstimatedParentDrawTime(base::TimeDelta::FromMicroseconds(1));
// To test swap ack throttling, this test disables automatic swap acks.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame.
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Queue BeginFrame while we are still handling the previous BeginFrame.
SendNextBeginFrame();
EXPECT_NO_ACTION(client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// NotifyReadyToCommit should trigger the pending commit.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// NotifyReadyToActivate should trigger the activation and draw.
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Swapping will put us into a swap throttled state.
// Run posted deadline.
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionAnimate", client_, 0, 2);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 1, 2);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// While swap throttled, BeginRetroFrames should trigger BeginImplFrames
// but not a BeginMainFrame or draw.
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
// Run posted BeginRetroFrame.
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(false));
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Let time pass sufficiently beyond the regular deadline but not beyond the
// late deadline.
now_src()->Advance(BeginFrameArgs::DefaultInterval() -
base::TimeDelta::FromMicroseconds(1));
task_runner().RunUntilTime(now_src()->NowTicks());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
// Take us out of a swap throttled state.
scheduler_->DidSwapBuffersComplete();
EXPECT_SINGLE_ACTION("ScheduledActionSendBeginMainFrame", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
// Verify that the deadline was rescheduled.
task_runner().RunUntilTime(now_src()->NowTicks());
EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_TRUE(client_->needs_begin_frames());
client_->Reset();
}
TEST_F(SchedulerTest, RetroFrameDoesNotExpireTooEarly) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(client_->needs_begin_frames());
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
client_->Reset();
BeginFrameArgs retro_frame_args = SendNextBeginFrame();
// This BeginFrame is queued up as a retro frame.
EXPECT_NO_ACTION(client_);
// The previous deadline is still pending.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// This main frame activating should schedule the (previous) deadline to
// trigger immediately.
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 2);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 2);
client_->Reset();
// The deadline task should trigger causing a draw.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionAnimate", client_, 0, 2);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 1, 2);
// Keep animating.
client_->Reset();
scheduler_->SetNeedsAnimate();
scheduler_->SetNeedsRedraw();
EXPECT_NO_ACTION(client_);
// Let's advance to the retro frame's deadline.
now_src()->Advance(retro_frame_args.deadline - now_src()->NowTicks());
// The retro frame hasn't expired yet.
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(false));
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
// This is an immediate deadline case.
client_->Reset();
task_runner().RunPendingTasks();
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
}
TEST_F(SchedulerTest, RetroFrameExpiresOnTime) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(client_->needs_begin_frames());
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
client_->Reset();
BeginFrameArgs retro_frame_args = SendNextBeginFrame();
// This BeginFrame is queued up as a retro frame.
EXPECT_NO_ACTION(client_);
// The previous deadline is still pending.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// This main frame activating should schedule the (previous) deadline to
// trigger immediately.
scheduler_->NotifyReadyToCommit();
scheduler_->NotifyReadyToActivate();
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 2);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 2);
client_->Reset();
// The deadline task should trigger causing a draw.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionAnimate", client_, 0, 2);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 1, 2);
// Keep animating.
client_->Reset();
scheduler_->SetNeedsAnimate();
scheduler_->SetNeedsRedraw();
EXPECT_NO_ACTION(client_);
// Let's advance sufficiently past the retro frame's deadline.
now_src()->Advance(retro_frame_args.deadline - now_src()->NowTicks() +
base::TimeDelta::FromMicroseconds(1));
// The retro frame should've expired.
EXPECT_NO_ACTION(client_);
}
TEST_F(SchedulerTest, MissedFrameDoesNotExpireTooEarly) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(client_->needs_begin_frames());
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
BeginFrameArgs missed_frame_args =
CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, now_src());
missed_frame_args.type = BeginFrameArgs::MISSED;
// Advance to the deadline.
now_src()->Advance(missed_frame_args.deadline - now_src()->NowTicks());
// Missed frame is handled because it's on time.
client_->Reset();
fake_external_begin_frame_source_->TestOnBeginFrame(missed_frame_args);
EXPECT_TRUE(
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(false)));
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
}
TEST_F(SchedulerTest, MissedFrameExpiresOnTime) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
scheduler_->SetNeedsBeginMainFrame();
EXPECT_TRUE(client_->needs_begin_frames());
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
BeginFrameArgs missed_frame_args =
CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, now_src());
missed_frame_args.type = BeginFrameArgs::MISSED;
// Advance sufficiently past the deadline.
now_src()->Advance(missed_frame_args.deadline - now_src()->NowTicks() +
base::TimeDelta::FromMicroseconds(1));
// Missed frame is dropped because it's too late.
client_->Reset();
fake_external_begin_frame_source_->TestOnBeginFrame(missed_frame_args);
EXPECT_FALSE(
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(false)));
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
}
void SchedulerTest::BeginFramesNotFromClient(
bool use_external_begin_frame_source,
bool throttle_frame_production) {
scheduler_settings_.use_external_begin_frame_source =
use_external_begin_frame_source;
scheduler_settings_.throttle_frame_production = throttle_frame_production;
SetUpScheduler(true);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame
// without calling SetNeedsBeginFrame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_NO_ACTION(client_);
client_->Reset();
// When the client-driven BeginFrame are disabled, the scheduler posts it's
// own BeginFrame tasks.
task_runner().RunPendingTasks(); // Run posted BeginFrame.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// If we don't swap on the deadline, we wait for the next BeginFrame.
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// NotifyReadyToCommit should trigger the commit.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
client_->Reset();
// NotifyReadyToActivate should trigger the activation.
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
client_->Reset();
// BeginImplFrame should prepare the draw.
task_runner().RunPendingTasks(); // Run posted BeginFrame.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// BeginImplFrame deadline should draw.
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 0, 1);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// The following BeginImplFrame deadline should SetNeedsBeginFrame(false)
// to avoid excessive toggles.
task_runner().RunPendingTasks(); // Run posted BeginFrame.
EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// Make sure SetNeedsBeginFrame isn't called on the client
// when the BeginFrame is no longer needed.
task_runner().RunPendingTasks(); // Run posted deadline.
EXPECT_SINGLE_ACTION("SendBeginMainFrameNotExpectedSoon", client_);
client_->Reset();
}
TEST_F(SchedulerTest, SyntheticBeginFrames) {
bool use_external_begin_frame_source = false;
bool throttle_frame_production = true;
BeginFramesNotFromClient(use_external_begin_frame_source,
throttle_frame_production);
}
TEST_F(SchedulerTest, VSyncThrottlingDisabled) {
bool use_external_begin_frame_source = true;
bool throttle_frame_production = false;
BeginFramesNotFromClient(use_external_begin_frame_source,
throttle_frame_production);
}
TEST_F(SchedulerTest, SyntheticBeginFrames_And_VSyncThrottlingDisabled) {
bool use_external_begin_frame_source = false;
bool throttle_frame_production = false;
BeginFramesNotFromClient(use_external_begin_frame_source,
throttle_frame_production);
}
void SchedulerTest::BeginFramesNotFromClient_SwapThrottled(
bool use_external_begin_frame_source,
bool throttle_frame_production) {
scheduler_settings_.use_external_begin_frame_source =
use_external_begin_frame_source;
scheduler_settings_.throttle_frame_production = throttle_frame_production;
SetUpScheduler(true);
scheduler_->SetEstimatedParentDrawTime(base::TimeDelta::FromMicroseconds(1));
// To test swap ack throttling, this test disables automatic swap acks.
scheduler_->SetMaxSwapsPending(1);
client_->SetAutomaticSwapAck(false);
// SetNeedsBeginMainFrame should begin the frame on the next BeginImplFrame.
client_->Reset();
scheduler_->SetNeedsBeginMainFrame();
EXPECT_NO_ACTION(client_);
client_->Reset();
// Trigger the first BeginImplFrame and BeginMainFrame
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// NotifyReadyToCommit should trigger the pending commit.
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
client_->Reset();
// NotifyReadyToActivate should trigger the activation and draw.
scheduler_->NotifyReadyToActivate();
EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
client_->Reset();
// Swapping will put us into a swap throttled state.
// Run posted deadline.
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionAnimate", client_, 0, 2);
EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 1, 2);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// While swap throttled, BeginFrames should trigger BeginImplFrames,
// but not a BeginMainFrame or draw.
scheduler_->SetNeedsBeginMainFrame();
scheduler_->SetNeedsRedraw();
EXPECT_SCOPED(AdvanceFrame()); // Run posted BeginFrame.
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// Let time pass sufficiently beyond the regular deadline but not beyond the
// late deadline.
now_src()->Advance(BeginFrameArgs::DefaultInterval() -
base::TimeDelta::FromMicroseconds(1));
task_runner().RunUntilTime(now_src()->NowTicks());
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
// Take us out of a swap throttled state.
scheduler_->DidSwapBuffersComplete();
EXPECT_SINGLE_ACTION("ScheduledActionSendBeginMainFrame", client_);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
// Verify that the deadline was rescheduled.
// We can't use RunUntilTime(now) here because the next frame is also
// scheduled if throttle_frame_production = false.
base::TimeTicks before_deadline = now_src()->NowTicks();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
base::TimeTicks after_deadline = now_src()->NowTicks();
EXPECT_EQ(after_deadline, before_deadline);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
}
TEST_F(SchedulerTest, SyntheticBeginFrames_SwapThrottled) {
bool use_external_begin_frame_source = false;
bool throttle_frame_production = true;
BeginFramesNotFromClient_SwapThrottled(use_external_begin_frame_source,
throttle_frame_production);
}
TEST_F(SchedulerTest, VSyncThrottlingDisabled_SwapThrottled) {
bool use_external_begin_frame_source = true;
bool throttle_frame_production = false;
BeginFramesNotFromClient_SwapThrottled(use_external_begin_frame_source,
throttle_frame_production);
}
TEST_F(SchedulerTest,
SyntheticBeginFrames_And_VSyncThrottlingDisabled_SwapThrottled) {
bool use_external_begin_frame_source = false;
bool throttle_frame_production = false;
BeginFramesNotFromClient_SwapThrottled(use_external_begin_frame_source,
throttle_frame_production);
}
TEST_F(SchedulerTest, DidLoseOutputSurfaceAfterOutputSurfaceIsInitialized) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(false);
scheduler_->SetCanStart();
scheduler_->SetVisible(true);
scheduler_->SetCanDraw(true);
EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_);
client_->Reset();
scheduler_->DidCreateAndInitializeOutputSurface();
EXPECT_NO_ACTION(client_);
scheduler_->DidLoseOutputSurface();
EXPECT_SINGLE_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_);
}
TEST_F(SchedulerTest, DidLoseOutputSurfaceAfterBeginFrameStarted) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// SetNeedsBeginMainFrame should begin the frame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
scheduler_->DidLoseOutputSurface();
// SetNeedsBeginFrames(false) is not called until the end of the frame.
EXPECT_NO_ACTION(client_);
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 2);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 2);
client_->Reset();
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
EXPECT_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_, 0, 3);
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 1, 3);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 2, 3);
}
TEST_F(SchedulerTest,
DidLoseOutputSurfaceAfterBeginFrameStartedWithHighLatency) {
scheduler_settings_.use_external_begin_frame_source = true;
SetUpScheduler(true);
// SetNeedsBeginMainFrame should begin the frame.
scheduler_->SetNeedsBeginMainFrame();
EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
client_->Reset();
EXPECT_SCOPED(AdvanceFrame());
EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
scheduler_->DidLoseOutputSurface();
// Do nothing when impl frame is in deadine pending state.
EXPECT_NO_ACTION(client_);
client_->Reset();
// Run posted deadline.
EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
task_runner().RunTasksWhile(client_->ImplFrameDeadlinePending(true));
// OnBeginImplFrameDeadline didn't schedule output surface creation because
// main frame is not yet completed.
EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
// BeginImplFrame is not started.
client_->Reset();
task_runner().RunUntilTime(now_src()->NowTicks() +
base::TimeDelta::FromMilliseconds(10));
EXPECT_NO_ACTION(client_);
EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
client_->Reset();
scheduler_->NotifyBeginMainFrameStarted();
scheduler_->NotifyReadyToCommit();
EXPECT_ACTION("ScheduledActionCommit", client_, 0, 3);
EXPECT_ACTION("ScheduledActionActivateSyncTree", client_, 1, 3);
EXPECT_ACTION("ScheduledActionBeginOutputSurfaceCreation", client_, 2, 3);
}
TEST_F(SchedulerTest, DidLoseOutputSurfaceAfterReadyToCommit) {
scheduler_settings_.use_external_begin_frame_source = true;