| Index: cc/scheduler/scheduler_state_machine.cc
|
| diff --git a/cc/scheduler/scheduler_state_machine.cc b/cc/scheduler/scheduler_state_machine.cc
|
| deleted file mode 100644
|
| index c512987bd23f501abdaf1fceab783945f8dc1ae4..0000000000000000000000000000000000000000
|
| --- a/cc/scheduler/scheduler_state_machine.cc
|
| +++ /dev/null
|
| @@ -1,1089 +0,0 @@
|
| -// 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_state_machine.h"
|
| -
|
| -#include "base/format_macros.h"
|
| -#include "base/logging.h"
|
| -#include "base/strings/stringprintf.h"
|
| -#include "base/trace_event/trace_event.h"
|
| -#include "base/trace_event/trace_event_argument.h"
|
| -#include "base/values.h"
|
| -#include "ui/gfx/frame_time.h"
|
| -
|
| -namespace cc {
|
| -
|
| -SchedulerStateMachine::SchedulerStateMachine(const SchedulerSettings& settings)
|
| - : settings_(settings),
|
| - output_surface_state_(OUTPUT_SURFACE_LOST),
|
| - begin_impl_frame_state_(BEGIN_IMPL_FRAME_STATE_IDLE),
|
| - commit_state_(COMMIT_STATE_IDLE),
|
| - forced_redraw_state_(FORCED_REDRAW_STATE_IDLE),
|
| - commit_count_(0),
|
| - current_frame_number_(0),
|
| - last_frame_number_animate_performed_(-1),
|
| - last_frame_number_swap_performed_(-1),
|
| - last_frame_number_swap_requested_(-1),
|
| - last_frame_number_begin_main_frame_sent_(-1),
|
| - animate_funnel_(false),
|
| - perform_swap_funnel_(false),
|
| - request_swap_funnel_(false),
|
| - send_begin_main_frame_funnel_(false),
|
| - prepare_tiles_funnel_(0),
|
| - consecutive_checkerboard_animations_(0),
|
| - max_pending_swaps_(1),
|
| - pending_swaps_(0),
|
| - needs_redraw_(false),
|
| - needs_animate_(false),
|
| - needs_prepare_tiles_(false),
|
| - needs_commit_(false),
|
| - inside_poll_for_anticipated_draw_triggers_(false),
|
| - visible_(false),
|
| - can_start_(false),
|
| - can_draw_(false),
|
| - has_pending_tree_(false),
|
| - pending_tree_is_ready_for_activation_(false),
|
| - active_tree_needs_first_draw_(false),
|
| - did_create_and_initialize_first_output_surface_(false),
|
| - impl_latency_takes_priority_(false),
|
| - skip_next_begin_main_frame_to_reduce_latency_(false),
|
| - skip_begin_main_frame_to_reduce_latency_(false),
|
| - continuous_painting_(false),
|
| - children_need_begin_frames_(false),
|
| - defer_commits_(false),
|
| - last_commit_had_no_updates_(false) {
|
| -}
|
| -
|
| -const char* SchedulerStateMachine::OutputSurfaceStateToString(
|
| - OutputSurfaceState state) {
|
| - switch (state) {
|
| - case OUTPUT_SURFACE_ACTIVE:
|
| - return "OUTPUT_SURFACE_ACTIVE";
|
| - case OUTPUT_SURFACE_LOST:
|
| - return "OUTPUT_SURFACE_LOST";
|
| - case OUTPUT_SURFACE_CREATING:
|
| - return "OUTPUT_SURFACE_CREATING";
|
| - case OUTPUT_SURFACE_WAITING_FOR_FIRST_COMMIT:
|
| - return "OUTPUT_SURFACE_WAITING_FOR_FIRST_COMMIT";
|
| - case OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION:
|
| - return "OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION";
|
| - }
|
| - NOTREACHED();
|
| - return "???";
|
| -}
|
| -
|
| -const char* SchedulerStateMachine::BeginImplFrameStateToString(
|
| - BeginImplFrameState state) {
|
| - switch (state) {
|
| - case BEGIN_IMPL_FRAME_STATE_IDLE:
|
| - return "BEGIN_IMPL_FRAME_STATE_IDLE";
|
| - case BEGIN_IMPL_FRAME_STATE_BEGIN_FRAME_STARTING:
|
| - return "BEGIN_IMPL_FRAME_STATE_BEGIN_FRAME_STARTING";
|
| - case BEGIN_IMPL_FRAME_STATE_INSIDE_BEGIN_FRAME:
|
| - return "BEGIN_IMPL_FRAME_STATE_INSIDE_BEGIN_FRAME";
|
| - case BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE:
|
| - return "BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE";
|
| - }
|
| - NOTREACHED();
|
| - return "???";
|
| -}
|
| -
|
| -const char* SchedulerStateMachine::CommitStateToString(CommitState state) {
|
| - switch (state) {
|
| - case COMMIT_STATE_IDLE:
|
| - return "COMMIT_STATE_IDLE";
|
| - case COMMIT_STATE_BEGIN_MAIN_FRAME_SENT:
|
| - return "COMMIT_STATE_BEGIN_MAIN_FRAME_SENT";
|
| - case COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED:
|
| - return "COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED";
|
| - case COMMIT_STATE_READY_TO_COMMIT:
|
| - return "COMMIT_STATE_READY_TO_COMMIT";
|
| - case COMMIT_STATE_WAITING_FOR_ACTIVATION:
|
| - return "COMMIT_STATE_WAITING_FOR_ACTIVATION";
|
| - case COMMIT_STATE_WAITING_FOR_DRAW:
|
| - return "COMMIT_STATE_WAITING_FOR_DRAW";
|
| - }
|
| - NOTREACHED();
|
| - return "???";
|
| -}
|
| -
|
| -const char* SchedulerStateMachine::ForcedRedrawOnTimeoutStateToString(
|
| - ForcedRedrawOnTimeoutState state) {
|
| - switch (state) {
|
| - case FORCED_REDRAW_STATE_IDLE:
|
| - return "FORCED_REDRAW_STATE_IDLE";
|
| - case FORCED_REDRAW_STATE_WAITING_FOR_COMMIT:
|
| - return "FORCED_REDRAW_STATE_WAITING_FOR_COMMIT";
|
| - case FORCED_REDRAW_STATE_WAITING_FOR_ACTIVATION:
|
| - return "FORCED_REDRAW_STATE_WAITING_FOR_ACTIVATION";
|
| - case FORCED_REDRAW_STATE_WAITING_FOR_DRAW:
|
| - return "FORCED_REDRAW_STATE_WAITING_FOR_DRAW";
|
| - }
|
| - NOTREACHED();
|
| - return "???";
|
| -}
|
| -
|
| -const char* SchedulerStateMachine::ActionToString(Action action) {
|
| - switch (action) {
|
| - case ACTION_NONE:
|
| - return "ACTION_NONE";
|
| - case ACTION_ANIMATE:
|
| - return "ACTION_ANIMATE";
|
| - case ACTION_SEND_BEGIN_MAIN_FRAME:
|
| - return "ACTION_SEND_BEGIN_MAIN_FRAME";
|
| - case ACTION_COMMIT:
|
| - return "ACTION_COMMIT";
|
| - case ACTION_ACTIVATE_SYNC_TREE:
|
| - return "ACTION_ACTIVATE_SYNC_TREE";
|
| - case ACTION_DRAW_AND_SWAP_IF_POSSIBLE:
|
| - return "ACTION_DRAW_AND_SWAP_IF_POSSIBLE";
|
| - case ACTION_DRAW_AND_SWAP_FORCED:
|
| - return "ACTION_DRAW_AND_SWAP_FORCED";
|
| - case ACTION_DRAW_AND_SWAP_ABORT:
|
| - return "ACTION_DRAW_AND_SWAP_ABORT";
|
| - case ACTION_BEGIN_OUTPUT_SURFACE_CREATION:
|
| - return "ACTION_BEGIN_OUTPUT_SURFACE_CREATION";
|
| - case ACTION_PREPARE_TILES:
|
| - return "ACTION_PREPARE_TILES";
|
| - }
|
| - NOTREACHED();
|
| - return "???";
|
| -}
|
| -
|
| -scoped_refptr<base::trace_event::ConvertableToTraceFormat>
|
| -SchedulerStateMachine::AsValue() const {
|
| - scoped_refptr<base::trace_event::TracedValue> state =
|
| - new base::trace_event::TracedValue();
|
| - AsValueInto(state.get());
|
| - return state;
|
| -}
|
| -
|
| -void SchedulerStateMachine::AsValueInto(
|
| - base::trace_event::TracedValue* state) const {
|
| - state->BeginDictionary("major_state");
|
| - state->SetString("next_action", ActionToString(NextAction()));
|
| - state->SetString("begin_impl_frame_state",
|
| - BeginImplFrameStateToString(begin_impl_frame_state_));
|
| - state->SetString("commit_state", CommitStateToString(commit_state_));
|
| - state->SetString("output_surface_state_",
|
| - OutputSurfaceStateToString(output_surface_state_));
|
| - state->SetString("forced_redraw_state",
|
| - ForcedRedrawOnTimeoutStateToString(forced_redraw_state_));
|
| - state->EndDictionary();
|
| -
|
| - state->BeginDictionary("minor_state");
|
| - state->SetInteger("commit_count", commit_count_);
|
| - state->SetInteger("current_frame_number", current_frame_number_);
|
| - state->SetInteger("last_frame_number_animate_performed",
|
| - last_frame_number_animate_performed_);
|
| - state->SetInteger("last_frame_number_swap_performed",
|
| - last_frame_number_swap_performed_);
|
| - state->SetInteger("last_frame_number_swap_requested",
|
| - last_frame_number_swap_requested_);
|
| - state->SetInteger("last_frame_number_begin_main_frame_sent",
|
| - last_frame_number_begin_main_frame_sent_);
|
| - state->SetBoolean("funnel: animate_funnel", animate_funnel_);
|
| - state->SetBoolean("funnel: perform_swap_funnel", perform_swap_funnel_);
|
| - state->SetBoolean("funnel: request_swap_funnel", request_swap_funnel_);
|
| - state->SetBoolean("funnel: send_begin_main_frame_funnel",
|
| - send_begin_main_frame_funnel_);
|
| - state->SetInteger("funnel: prepare_tiles_funnel", prepare_tiles_funnel_);
|
| - state->SetInteger("consecutive_checkerboard_animations",
|
| - consecutive_checkerboard_animations_);
|
| - state->SetInteger("max_pending_swaps_", max_pending_swaps_);
|
| - state->SetInteger("pending_swaps_", pending_swaps_);
|
| - state->SetBoolean("needs_redraw", needs_redraw_);
|
| - state->SetBoolean("needs_animate_", needs_animate_);
|
| - state->SetBoolean("needs_prepare_tiles", needs_prepare_tiles_);
|
| - state->SetBoolean("needs_commit", needs_commit_);
|
| - state->SetBoolean("visible", visible_);
|
| - state->SetBoolean("can_start", can_start_);
|
| - state->SetBoolean("can_draw", can_draw_);
|
| - state->SetBoolean("has_pending_tree", has_pending_tree_);
|
| - state->SetBoolean("pending_tree_is_ready_for_activation",
|
| - pending_tree_is_ready_for_activation_);
|
| - state->SetBoolean("active_tree_needs_first_draw",
|
| - active_tree_needs_first_draw_);
|
| - state->SetBoolean("did_create_and_initialize_first_output_surface",
|
| - did_create_and_initialize_first_output_surface_);
|
| - state->SetBoolean("impl_latency_takes_priority",
|
| - impl_latency_takes_priority_);
|
| - state->SetBoolean("main_thread_is_in_high_latency_mode",
|
| - MainThreadIsInHighLatencyMode());
|
| - state->SetBoolean("skip_begin_main_frame_to_reduce_latency",
|
| - skip_begin_main_frame_to_reduce_latency_);
|
| - state->SetBoolean("skip_next_begin_main_frame_to_reduce_latency",
|
| - skip_next_begin_main_frame_to_reduce_latency_);
|
| - state->SetBoolean("continuous_painting", continuous_painting_);
|
| - state->SetBoolean("children_need_begin_frames", children_need_begin_frames_);
|
| - state->SetBoolean("defer_commits", defer_commits_);
|
| - state->EndDictionary();
|
| -}
|
| -
|
| -void SchedulerStateMachine::AdvanceCurrentFrameNumber() {
|
| - current_frame_number_++;
|
| -
|
| - animate_funnel_ = false;
|
| - perform_swap_funnel_ = false;
|
| - request_swap_funnel_ = false;
|
| - send_begin_main_frame_funnel_ = false;
|
| -
|
| - // "Drain" the PrepareTiles funnel.
|
| - if (prepare_tiles_funnel_ > 0)
|
| - prepare_tiles_funnel_--;
|
| -
|
| - skip_begin_main_frame_to_reduce_latency_ =
|
| - skip_next_begin_main_frame_to_reduce_latency_;
|
| - skip_next_begin_main_frame_to_reduce_latency_ = false;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::PendingDrawsShouldBeAborted() const {
|
| - // These are all the cases where we normally cannot or do not want to draw
|
| - // but, if needs_redraw_ is true and we do not draw to make forward progress,
|
| - // we might deadlock with the main thread.
|
| - // This should be a superset of PendingActivationsShouldBeForced() since
|
| - // activation of the pending tree is blocked by drawing of the active tree and
|
| - // the main thread might be blocked on activation of the most recent commit.
|
| - if (PendingActivationsShouldBeForced())
|
| - return true;
|
| -
|
| - // Additional states where we should abort draws.
|
| - if (!can_draw_)
|
| - return true;
|
| - return false;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::PendingActivationsShouldBeForced() const {
|
| - // There is no output surface to trigger our activations.
|
| - // If we do not force activations to make forward progress, we might deadlock
|
| - // with the main thread.
|
| - if (output_surface_state_ == OUTPUT_SURFACE_LOST)
|
| - return true;
|
| -
|
| - // If we're not visible, we should force activation.
|
| - // Since we set RequiresHighResToDraw when becoming visible, we ensure that we
|
| - // don't checkerboard until all visible resources are done. Furthermore, if we
|
| - // do keep the pending tree around, when becoming visible we might activate
|
| - // prematurely causing RequiresHighResToDraw flag to be reset. In all cases,
|
| - // we can simply activate on becoming invisible since we don't need to draw
|
| - // the active tree when we're in this state.
|
| - if (!visible_)
|
| - return true;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldBeginOutputSurfaceCreation() const {
|
| - // Don't try to initialize too early.
|
| - if (!can_start_)
|
| - return false;
|
| -
|
| - // We only want to start output surface initialization after the
|
| - // previous commit is complete.
|
| - if (commit_state_ != COMMIT_STATE_IDLE)
|
| - return false;
|
| -
|
| - // Make sure the BeginImplFrame from any previous OutputSurfaces
|
| - // are complete before creating the new OutputSurface.
|
| - if (begin_impl_frame_state_ != BEGIN_IMPL_FRAME_STATE_IDLE)
|
| - return false;
|
| -
|
| - // We want to clear the pipline of any pending draws and activations
|
| - // before starting output surface initialization. This allows us to avoid
|
| - // weird corner cases where we abort draws or force activation while we
|
| - // are initializing the output surface.
|
| - if (active_tree_needs_first_draw_ || has_pending_tree_)
|
| - return false;
|
| -
|
| - // We need to create the output surface if we don't have one and we haven't
|
| - // started creating one yet.
|
| - return output_surface_state_ == OUTPUT_SURFACE_LOST;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldDraw() const {
|
| - // If we need to abort draws, we should do so ASAP since the draw could
|
| - // be blocking other important actions (like output surface initialization),
|
| - // from occuring. If we are waiting for the first draw, then perfom the
|
| - // aborted draw to keep things moving. If we are not waiting for the first
|
| - // draw however, we don't want to abort for no reason.
|
| - if (PendingDrawsShouldBeAborted())
|
| - return active_tree_needs_first_draw_;
|
| -
|
| - // Do not draw too many times in a single frame. It's okay that we don't check
|
| - // this before checking for aborted draws because aborted draws do not request
|
| - // a swap.
|
| - if (request_swap_funnel_)
|
| - return false;
|
| -
|
| - // Don't draw if we are waiting on the first commit after a surface.
|
| - if (output_surface_state_ != OUTPUT_SURFACE_ACTIVE)
|
| - return false;
|
| -
|
| - // Do not queue too many swaps.
|
| - if (pending_swaps_ >= max_pending_swaps_)
|
| - return false;
|
| -
|
| - // Except for the cases above, do not draw outside of the BeginImplFrame
|
| - // deadline.
|
| - if (begin_impl_frame_state_ != BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE)
|
| - return false;
|
| -
|
| - // Only handle forced redraws due to timeouts on the regular deadline.
|
| - if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_DRAW)
|
| - return true;
|
| -
|
| - return needs_redraw_;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldActivatePendingTree() const {
|
| - // There is nothing to activate.
|
| - if (!has_pending_tree_)
|
| - return false;
|
| -
|
| - // We should not activate a second tree before drawing the first one.
|
| - // Even if we need to force activation of the pending tree, we should abort
|
| - // drawing the active tree first.
|
| - if (active_tree_needs_first_draw_)
|
| - return false;
|
| -
|
| - // If we want to force activation, do so ASAP.
|
| - if (PendingActivationsShouldBeForced())
|
| - return true;
|
| -
|
| - // At this point, only activate if we are ready to activate.
|
| - return pending_tree_is_ready_for_activation_;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldAnimate() const {
|
| - // Do not animate too many times in a single frame.
|
| - if (animate_funnel_)
|
| - return false;
|
| -
|
| - // Don't animate if we are waiting on the first commit after a surface.
|
| - if (output_surface_state_ != OUTPUT_SURFACE_ACTIVE)
|
| - return false;
|
| -
|
| - if (begin_impl_frame_state_ != BEGIN_IMPL_FRAME_STATE_BEGIN_FRAME_STARTING &&
|
| - begin_impl_frame_state_ != BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE)
|
| - return false;
|
| -
|
| - return needs_redraw_ || needs_animate_;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::CouldSendBeginMainFrame() const {
|
| - // Do not send begin main frame too many times in a single frame.
|
| - if (send_begin_main_frame_funnel_)
|
| - return false;
|
| -
|
| - if (!needs_commit_)
|
| - return false;
|
| -
|
| - // We can not perform commits if we are not visible.
|
| - if (!visible_)
|
| - return false;
|
| -
|
| - // Do not make a new commits when it is deferred.
|
| - if (defer_commits_)
|
| - return false;
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldSendBeginMainFrame() const {
|
| - if (!CouldSendBeginMainFrame())
|
| - return false;
|
| -
|
| - // Only send BeginMainFrame when there isn't another commit pending already.
|
| - if (commit_state_ != COMMIT_STATE_IDLE)
|
| - return false;
|
| -
|
| - // Don't send BeginMainFrame early if we are prioritizing the active tree
|
| - // because of impl_latency_takes_priority_.
|
| - if (impl_latency_takes_priority_ &&
|
| - (has_pending_tree_ || active_tree_needs_first_draw_)) {
|
| - return false;
|
| - }
|
| -
|
| - // We should not send BeginMainFrame while we are in
|
| - // BEGIN_IMPL_FRAME_STATE_IDLE since we might have new
|
| - // user input arriving soon.
|
| - // TODO(brianderson): Allow sending BeginMainFrame while idle when the main
|
| - // thread isn't consuming user input.
|
| - if (begin_impl_frame_state_ == BEGIN_IMPL_FRAME_STATE_IDLE &&
|
| - BeginFrameNeeded())
|
| - return false;
|
| -
|
| - // We need a new commit for the forced redraw. This honors the
|
| - // single commit per interval because the result will be swapped to screen.
|
| - if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_COMMIT)
|
| - return true;
|
| -
|
| - // We shouldn't normally accept commits if there isn't an OutputSurface.
|
| - if (!HasInitializedOutputSurface())
|
| - return false;
|
| -
|
| - // SwapAck throttle the BeginMainFrames unless we just swapped.
|
| - // TODO(brianderson): Remove this restriction to improve throughput.
|
| - bool just_swapped_in_deadline =
|
| - begin_impl_frame_state_ == BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE &&
|
| - perform_swap_funnel_;
|
| - if (pending_swaps_ >= max_pending_swaps_ && !just_swapped_in_deadline)
|
| - return false;
|
| -
|
| - if (skip_begin_main_frame_to_reduce_latency_)
|
| - return false;
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldCommit() const {
|
| - if (commit_state_ != COMMIT_STATE_READY_TO_COMMIT)
|
| - return false;
|
| -
|
| - // We must not finish the commit until the pending tree is free.
|
| - if (has_pending_tree_) {
|
| - DCHECK(settings_.main_frame_before_activation_enabled);
|
| - return false;
|
| - }
|
| -
|
| - // Prioritize drawing the previous commit before finishing the next commit.
|
| - if (active_tree_needs_first_draw_)
|
| - return false;
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldPrepareTiles() const {
|
| - // PrepareTiles only really needs to be called immediately after commit
|
| - // and then periodically after that. Use a funnel to make sure we average
|
| - // one PrepareTiles per BeginImplFrame in the long run.
|
| - if (prepare_tiles_funnel_ > 0)
|
| - return false;
|
| -
|
| - // Limiting to once per-frame is not enough, since we only want to
|
| - // prepare tiles _after_ draws. Polling for draw triggers and
|
| - // begin-frame are mutually exclusive, so we limit to these two cases.
|
| - if (begin_impl_frame_state_ != BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE &&
|
| - !inside_poll_for_anticipated_draw_triggers_)
|
| - return false;
|
| - return needs_prepare_tiles_;
|
| -}
|
| -
|
| -SchedulerStateMachine::Action SchedulerStateMachine::NextAction() const {
|
| - if (ShouldActivatePendingTree())
|
| - return ACTION_ACTIVATE_SYNC_TREE;
|
| - if (ShouldCommit())
|
| - return ACTION_COMMIT;
|
| - if (ShouldAnimate())
|
| - return ACTION_ANIMATE;
|
| - if (ShouldDraw()) {
|
| - if (PendingDrawsShouldBeAborted())
|
| - return ACTION_DRAW_AND_SWAP_ABORT;
|
| - else if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_DRAW)
|
| - return ACTION_DRAW_AND_SWAP_FORCED;
|
| - else
|
| - return ACTION_DRAW_AND_SWAP_IF_POSSIBLE;
|
| - }
|
| - if (ShouldPrepareTiles())
|
| - return ACTION_PREPARE_TILES;
|
| - if (ShouldSendBeginMainFrame())
|
| - return ACTION_SEND_BEGIN_MAIN_FRAME;
|
| - if (ShouldBeginOutputSurfaceCreation())
|
| - return ACTION_BEGIN_OUTPUT_SURFACE_CREATION;
|
| - return ACTION_NONE;
|
| -}
|
| -
|
| -void SchedulerStateMachine::UpdateState(Action action) {
|
| - switch (action) {
|
| - case ACTION_NONE:
|
| - return;
|
| -
|
| - case ACTION_ACTIVATE_SYNC_TREE:
|
| - UpdateStateOnActivation();
|
| - return;
|
| -
|
| - case ACTION_ANIMATE:
|
| - DCHECK(!animate_funnel_);
|
| - last_frame_number_animate_performed_ = current_frame_number_;
|
| - animate_funnel_ = true;
|
| - needs_animate_ = false;
|
| - // TODO(skyostil): Instead of assuming this, require the client to tell
|
| - // us.
|
| - SetNeedsRedraw();
|
| - return;
|
| -
|
| - case ACTION_SEND_BEGIN_MAIN_FRAME:
|
| - DCHECK(!has_pending_tree_ ||
|
| - settings_.main_frame_before_activation_enabled);
|
| - DCHECK(visible_);
|
| - DCHECK(!send_begin_main_frame_funnel_);
|
| - commit_state_ = COMMIT_STATE_BEGIN_MAIN_FRAME_SENT;
|
| - needs_commit_ = false;
|
| - send_begin_main_frame_funnel_ = true;
|
| - last_frame_number_begin_main_frame_sent_ =
|
| - current_frame_number_;
|
| - return;
|
| -
|
| - case ACTION_COMMIT: {
|
| - bool commit_has_no_updates = false;
|
| - UpdateStateOnCommit(commit_has_no_updates);
|
| - return;
|
| - }
|
| -
|
| - case ACTION_DRAW_AND_SWAP_FORCED:
|
| - case ACTION_DRAW_AND_SWAP_IF_POSSIBLE: {
|
| - bool did_request_swap = true;
|
| - UpdateStateOnDraw(did_request_swap);
|
| - return;
|
| - }
|
| -
|
| - case ACTION_DRAW_AND_SWAP_ABORT: {
|
| - bool did_request_swap = false;
|
| - UpdateStateOnDraw(did_request_swap);
|
| - return;
|
| - }
|
| -
|
| - case ACTION_BEGIN_OUTPUT_SURFACE_CREATION:
|
| - DCHECK_EQ(output_surface_state_, OUTPUT_SURFACE_LOST);
|
| - output_surface_state_ = OUTPUT_SURFACE_CREATING;
|
| -
|
| - // The following DCHECKs make sure we are in the proper quiescent state.
|
| - // The pipeline should be flushed entirely before we start output
|
| - // surface creation to avoid complicated corner cases.
|
| - DCHECK_EQ(commit_state_, COMMIT_STATE_IDLE);
|
| - DCHECK(!has_pending_tree_);
|
| - DCHECK(!active_tree_needs_first_draw_);
|
| - return;
|
| -
|
| - case ACTION_PREPARE_TILES:
|
| - UpdateStateOnPrepareTiles();
|
| - return;
|
| - }
|
| -}
|
| -
|
| -void SchedulerStateMachine::UpdateStateOnCommit(bool commit_has_no_updates) {
|
| - commit_count_++;
|
| -
|
| - if (!commit_has_no_updates)
|
| - animate_funnel_ = false;
|
| -
|
| - if (commit_has_no_updates || settings_.main_frame_before_activation_enabled) {
|
| - commit_state_ = COMMIT_STATE_IDLE;
|
| - } else if (settings_.impl_side_painting) {
|
| - commit_state_ = COMMIT_STATE_WAITING_FOR_ACTIVATION;
|
| - } else {
|
| - commit_state_ = settings_.main_thread_should_always_be_low_latency
|
| - ? COMMIT_STATE_WAITING_FOR_DRAW
|
| - : COMMIT_STATE_IDLE;
|
| - }
|
| -
|
| - // If we are impl-side-painting but the commit was aborted, then we behave
|
| - // mostly as if we are not impl-side-painting since there is no pending tree.
|
| - has_pending_tree_ = settings_.impl_side_painting && !commit_has_no_updates;
|
| -
|
| - // Update state related to forced draws.
|
| - if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_COMMIT) {
|
| - forced_redraw_state_ = has_pending_tree_
|
| - ? FORCED_REDRAW_STATE_WAITING_FOR_ACTIVATION
|
| - : FORCED_REDRAW_STATE_WAITING_FOR_DRAW;
|
| - }
|
| -
|
| - // Update the output surface state.
|
| - DCHECK_NE(output_surface_state_, OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION);
|
| - if (output_surface_state_ == OUTPUT_SURFACE_WAITING_FOR_FIRST_COMMIT) {
|
| - if (has_pending_tree_) {
|
| - output_surface_state_ = OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION;
|
| - } else {
|
| - output_surface_state_ = OUTPUT_SURFACE_ACTIVE;
|
| - needs_redraw_ = true;
|
| - }
|
| - }
|
| -
|
| - // Update state if we have a new active tree to draw, or if the active tree
|
| - // was unchanged but we need to do a forced draw.
|
| - if (!has_pending_tree_ &&
|
| - (!commit_has_no_updates ||
|
| - forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_DRAW)) {
|
| - needs_redraw_ = true;
|
| - active_tree_needs_first_draw_ = true;
|
| - }
|
| -
|
| - // This post-commit work is common to both completed and aborted commits.
|
| - pending_tree_is_ready_for_activation_ = false;
|
| -
|
| - if (continuous_painting_)
|
| - needs_commit_ = true;
|
| - last_commit_had_no_updates_ = commit_has_no_updates;
|
| -}
|
| -
|
| -void SchedulerStateMachine::UpdateStateOnActivation() {
|
| - if (commit_state_ == COMMIT_STATE_WAITING_FOR_ACTIVATION) {
|
| - commit_state_ = settings_.main_thread_should_always_be_low_latency
|
| - ? COMMIT_STATE_WAITING_FOR_DRAW
|
| - : COMMIT_STATE_IDLE;
|
| - }
|
| -
|
| - if (output_surface_state_ == OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION)
|
| - output_surface_state_ = OUTPUT_SURFACE_ACTIVE;
|
| -
|
| - if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_ACTIVATION)
|
| - forced_redraw_state_ = FORCED_REDRAW_STATE_WAITING_FOR_DRAW;
|
| -
|
| - has_pending_tree_ = false;
|
| - pending_tree_is_ready_for_activation_ = false;
|
| - active_tree_needs_first_draw_ = true;
|
| - needs_redraw_ = true;
|
| -}
|
| -
|
| -void SchedulerStateMachine::UpdateStateOnDraw(bool did_request_swap) {
|
| - if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_DRAW)
|
| - forced_redraw_state_ = FORCED_REDRAW_STATE_IDLE;
|
| -
|
| - if (commit_state_ == COMMIT_STATE_WAITING_FOR_DRAW)
|
| - commit_state_ = COMMIT_STATE_IDLE;
|
| -
|
| - needs_redraw_ = false;
|
| - active_tree_needs_first_draw_ = false;
|
| -
|
| - if (did_request_swap) {
|
| - DCHECK(!request_swap_funnel_);
|
| - request_swap_funnel_ = true;
|
| - last_frame_number_swap_requested_ = current_frame_number_;
|
| - }
|
| -}
|
| -
|
| -void SchedulerStateMachine::UpdateStateOnPrepareTiles() {
|
| - needs_prepare_tiles_ = false;
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetSkipNextBeginMainFrameToReduceLatency() {
|
| - TRACE_EVENT_INSTANT0("cc",
|
| - "Scheduler: SkipNextBeginMainFrameToReduceLatency",
|
| - TRACE_EVENT_SCOPE_THREAD);
|
| - skip_next_begin_main_frame_to_reduce_latency_ = true;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::BeginFrameNeededForChildren() const {
|
| - if (HasInitializedOutputSurface())
|
| - return children_need_begin_frames_;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::BeginFrameNeeded() const {
|
| - // We can't handle BeginFrames when output surface isn't initialized.
|
| - // TODO(brianderson): Support output surface creation inside a BeginFrame.
|
| - if (!HasInitializedOutputSurface())
|
| - return false;
|
| -
|
| - if (SupportsProactiveBeginFrame()) {
|
| - return (BeginFrameNeededToAnimateOrDraw() ||
|
| - BeginFrameNeededForChildren() ||
|
| - ProactiveBeginFrameWanted());
|
| - }
|
| -
|
| - // Proactive BeginFrames are bad for the synchronous compositor because we
|
| - // have to draw when we get the BeginFrame and could end up drawing many
|
| - // duplicate frames if our new frame isn't ready in time.
|
| - // To poll for state with the synchronous compositor without having to draw,
|
| - // we rely on ShouldPollForAnticipatedDrawTriggers instead.
|
| - // Synchronous compositor doesn't have a browser.
|
| - DCHECK(!children_need_begin_frames_);
|
| - return BeginFrameNeededToAnimateOrDraw();
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldPollForAnticipatedDrawTriggers() const {
|
| - // ShouldPollForAnticipatedDrawTriggers is what we use in place of
|
| - // ProactiveBeginFrameWanted when we are using the synchronous
|
| - // compositor.
|
| - if (!SupportsProactiveBeginFrame()) {
|
| - return !BeginFrameNeededToAnimateOrDraw() && ProactiveBeginFrameWanted();
|
| - }
|
| -
|
| - // Non synchronous compositors should rely on
|
| - // ProactiveBeginFrameWanted to poll for state instead.
|
| - return false;
|
| -}
|
| -
|
| -// Note: If SupportsProactiveBeginFrame is false, the scheduler should poll
|
| -// for changes in it's draw state so it can request a BeginFrame when it's
|
| -// actually ready.
|
| -bool SchedulerStateMachine::SupportsProactiveBeginFrame() const {
|
| - // It is undesirable to proactively request BeginFrames if we are
|
| - // using a synchronous compositor because we *must* draw for every
|
| - // BeginFrame, which could cause duplicate draws.
|
| - return !settings_.using_synchronous_renderer_compositor;
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetChildrenNeedBeginFrames(
|
| - bool children_need_begin_frames) {
|
| - children_need_begin_frames_ = children_need_begin_frames;
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetDeferCommits(bool defer_commits) {
|
| - defer_commits_ = defer_commits;
|
| -}
|
| -
|
| -// These are the cases where we definitely (or almost definitely) have a
|
| -// new frame to animate and/or draw and can draw.
|
| -bool SchedulerStateMachine::BeginFrameNeededToAnimateOrDraw() const {
|
| - // The forced draw respects our normal draw scheduling, so we need to
|
| - // request a BeginImplFrame for it.
|
| - if (forced_redraw_state_ == FORCED_REDRAW_STATE_WAITING_FOR_DRAW)
|
| - return true;
|
| -
|
| - return needs_animate_ || needs_redraw_;
|
| -}
|
| -
|
| -// These are cases where we are very likely to draw soon, but might not
|
| -// actually have a new frame to draw when we receive the next BeginImplFrame.
|
| -// Proactively requesting the BeginImplFrame helps hide the round trip latency
|
| -// of the SetNeedsBeginFrame request that has to go to the Browser.
|
| -bool SchedulerStateMachine::ProactiveBeginFrameWanted() const {
|
| - // Do not be proactive when invisible.
|
| - if (!visible_)
|
| - return false;
|
| -
|
| - // We should proactively request a BeginImplFrame if a commit is pending
|
| - // because we will want to draw if the commit completes quickly.
|
| - if (needs_commit_ || commit_state_ != COMMIT_STATE_IDLE)
|
| - return true;
|
| -
|
| - // If the pending tree activates quickly, we'll want a BeginImplFrame soon
|
| - // to draw the new active tree.
|
| - if (has_pending_tree_)
|
| - return true;
|
| -
|
| - // Changing priorities may allow us to activate (given the new priorities),
|
| - // which may result in a new frame.
|
| - if (needs_prepare_tiles_)
|
| - return true;
|
| -
|
| - // If we just sent a swap request, it's likely that we are going to produce
|
| - // another frame soon. This helps avoid negative glitches in our
|
| - // SetNeedsBeginFrame requests, which may propagate to the BeginImplFrame
|
| - // provider and get sampled at an inopportune time, delaying the next
|
| - // BeginImplFrame.
|
| - if (request_swap_funnel_)
|
| - return true;
|
| -
|
| - // If the last commit was aborted because of early out (no updates), we should
|
| - // still want a begin frame in case there is a commit coming again.
|
| - if (last_commit_had_no_updates_)
|
| - return true;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -void SchedulerStateMachine::OnBeginImplFrame() {
|
| - AdvanceCurrentFrameNumber();
|
| - DCHECK_EQ(begin_impl_frame_state_, BEGIN_IMPL_FRAME_STATE_IDLE)
|
| - << AsValue()->ToString();
|
| - begin_impl_frame_state_ = BEGIN_IMPL_FRAME_STATE_BEGIN_FRAME_STARTING;
|
| - last_commit_had_no_updates_ = false;
|
| -}
|
| -
|
| -void SchedulerStateMachine::OnBeginImplFrameDeadlinePending() {
|
| - DCHECK_EQ(begin_impl_frame_state_,
|
| - BEGIN_IMPL_FRAME_STATE_BEGIN_FRAME_STARTING)
|
| - << AsValue()->ToString();
|
| - begin_impl_frame_state_ = BEGIN_IMPL_FRAME_STATE_INSIDE_BEGIN_FRAME;
|
| -}
|
| -
|
| -void SchedulerStateMachine::OnBeginImplFrameDeadline() {
|
| - DCHECK_EQ(begin_impl_frame_state_, BEGIN_IMPL_FRAME_STATE_INSIDE_BEGIN_FRAME)
|
| - << AsValue()->ToString();
|
| - begin_impl_frame_state_ = BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE;
|
| -}
|
| -
|
| -void SchedulerStateMachine::OnBeginImplFrameIdle() {
|
| - DCHECK_EQ(begin_impl_frame_state_, BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE)
|
| - << AsValue()->ToString();
|
| - begin_impl_frame_state_ = BEGIN_IMPL_FRAME_STATE_IDLE;
|
| -}
|
| -
|
| -SchedulerStateMachine::BeginImplFrameDeadlineMode
|
| -SchedulerStateMachine::CurrentBeginImplFrameDeadlineMode() const {
|
| - if (ShouldTriggerBeginImplFrameDeadlineImmediately()) {
|
| - return BEGIN_IMPL_FRAME_DEADLINE_MODE_IMMEDIATE;
|
| - } else if (needs_redraw_ && pending_swaps_ < max_pending_swaps_) {
|
| - // We have an animation or fast input path on the impl thread that wants
|
| - // to draw, so don't wait too long for a new active tree.
|
| - // If we are swap throttled we should wait until we are unblocked.
|
| - return BEGIN_IMPL_FRAME_DEADLINE_MODE_REGULAR;
|
| - } else {
|
| - // The impl thread doesn't have anything it wants to draw and we are just
|
| - // waiting for a new active tree or we are swap throttled. In short we are
|
| - // blocked.
|
| - return BEGIN_IMPL_FRAME_DEADLINE_MODE_LATE;
|
| - }
|
| -}
|
| -
|
| -bool SchedulerStateMachine::ShouldTriggerBeginImplFrameDeadlineImmediately()
|
| - const {
|
| - // TODO(brianderson): This should take into account multiple commit sources.
|
| -
|
| - if (begin_impl_frame_state_ != BEGIN_IMPL_FRAME_STATE_INSIDE_BEGIN_FRAME)
|
| - return false;
|
| -
|
| - // If we've lost the output surface, end the current BeginImplFrame ASAP
|
| - // so we can start creating the next output surface.
|
| - if (output_surface_state_ == OUTPUT_SURFACE_LOST)
|
| - return true;
|
| -
|
| - // SwapAck throttle the deadline since we wont draw and swap anyway.
|
| - if (pending_swaps_ >= max_pending_swaps_)
|
| - return false;
|
| -
|
| - if (active_tree_needs_first_draw_)
|
| - return true;
|
| -
|
| - if (!needs_redraw_)
|
| - return false;
|
| -
|
| - // This is used to prioritize impl-thread draws when the main thread isn't
|
| - // producing anything, e.g., after an aborted commit. We also check that we
|
| - // don't have a pending tree -- otherwise we should give it a chance to
|
| - // activate.
|
| - // TODO(skyostil): Revisit this when we have more accurate deadline estimates.
|
| - if (commit_state_ == COMMIT_STATE_IDLE && !has_pending_tree_)
|
| - return true;
|
| -
|
| - // Prioritize impl-thread draws in impl_latency_takes_priority_ mode.
|
| - if (impl_latency_takes_priority_)
|
| - return true;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::MainThreadIsInHighLatencyMode() const {
|
| - // If a commit is pending before the previous commit has been drawn, we
|
| - // are definitely in a high latency mode.
|
| - if (CommitPending() && (active_tree_needs_first_draw_ || has_pending_tree_))
|
| - return true;
|
| -
|
| - // If we just sent a BeginMainFrame and haven't hit the deadline yet, the main
|
| - // thread is in a low latency mode.
|
| - if (send_begin_main_frame_funnel_ &&
|
| - (begin_impl_frame_state_ == BEGIN_IMPL_FRAME_STATE_BEGIN_FRAME_STARTING ||
|
| - begin_impl_frame_state_ == BEGIN_IMPL_FRAME_STATE_INSIDE_BEGIN_FRAME))
|
| - return false;
|
| -
|
| - // If there's a commit in progress it must either be from the previous frame
|
| - // or it started after the impl thread's deadline. In either case the main
|
| - // thread is in high latency mode.
|
| - if (CommitPending())
|
| - return true;
|
| -
|
| - // Similarly, if there's a pending tree the main thread is in high latency
|
| - // mode, because either
|
| - // it's from the previous frame
|
| - // or
|
| - // we're currently drawing the active tree and the pending tree will thus
|
| - // only be drawn in the next frame.
|
| - if (has_pending_tree_)
|
| - return true;
|
| -
|
| - if (begin_impl_frame_state_ == BEGIN_IMPL_FRAME_STATE_INSIDE_DEADLINE) {
|
| - // Even if there's a new active tree to draw at the deadline or we've just
|
| - // swapped it, it may have been triggered by a previous BeginImplFrame, in
|
| - // which case the main thread is in a high latency mode.
|
| - return (active_tree_needs_first_draw_ || perform_swap_funnel_) &&
|
| - !send_begin_main_frame_funnel_;
|
| - }
|
| -
|
| - // If the active tree needs its first draw in any other state, we know the
|
| - // main thread is in a high latency mode.
|
| - return active_tree_needs_first_draw_;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidEnterPollForAnticipatedDrawTriggers() {
|
| - AdvanceCurrentFrameNumber();
|
| - inside_poll_for_anticipated_draw_triggers_ = true;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidLeavePollForAnticipatedDrawTriggers() {
|
| - inside_poll_for_anticipated_draw_triggers_ = false;
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetVisible(bool visible) { visible_ = visible; }
|
| -
|
| -void SchedulerStateMachine::SetCanDraw(bool can_draw) { can_draw_ = can_draw; }
|
| -
|
| -void SchedulerStateMachine::SetNeedsRedraw() { needs_redraw_ = true; }
|
| -
|
| -void SchedulerStateMachine::SetNeedsAnimate() {
|
| - needs_animate_ = true;
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetNeedsPrepareTiles() {
|
| - if (!needs_prepare_tiles_) {
|
| - TRACE_EVENT0("cc", "SchedulerStateMachine::SetNeedsPrepareTiles");
|
| - needs_prepare_tiles_ = true;
|
| - }
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetMaxSwapsPending(int max) {
|
| - max_pending_swaps_ = max;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidSwapBuffers() {
|
| - pending_swaps_++;
|
| - DCHECK_LE(pending_swaps_, max_pending_swaps_);
|
| - DCHECK(!perform_swap_funnel_);
|
| -
|
| - perform_swap_funnel_ = true;
|
| - last_frame_number_swap_performed_ = current_frame_number_;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidSwapBuffersComplete() {
|
| - DCHECK_GT(pending_swaps_, 0);
|
| - pending_swaps_--;
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetImplLatencyTakesPriority(
|
| - bool impl_latency_takes_priority) {
|
| - impl_latency_takes_priority_ = impl_latency_takes_priority;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidDrawIfPossibleCompleted(DrawResult result) {
|
| - switch (result) {
|
| - case INVALID_RESULT:
|
| - NOTREACHED() << "Uninitialized DrawResult.";
|
| - break;
|
| - case DRAW_ABORTED_CANT_DRAW:
|
| - case DRAW_ABORTED_CONTEXT_LOST:
|
| - NOTREACHED() << "Invalid return value from DrawAndSwapIfPossible:"
|
| - << result;
|
| - break;
|
| - case DRAW_SUCCESS:
|
| - consecutive_checkerboard_animations_ = 0;
|
| - forced_redraw_state_ = FORCED_REDRAW_STATE_IDLE;
|
| - break;
|
| - case DRAW_ABORTED_CHECKERBOARD_ANIMATIONS:
|
| - needs_redraw_ = true;
|
| -
|
| - // If we're already in the middle of a redraw, we don't need to
|
| - // restart it.
|
| - if (forced_redraw_state_ != FORCED_REDRAW_STATE_IDLE)
|
| - return;
|
| -
|
| - needs_commit_ = true;
|
| - consecutive_checkerboard_animations_++;
|
| - if (settings_.timeout_and_draw_when_animation_checkerboards &&
|
| - consecutive_checkerboard_animations_ >=
|
| - settings_.maximum_number_of_failed_draws_before_draw_is_forced_) {
|
| - consecutive_checkerboard_animations_ = 0;
|
| - // We need to force a draw, but it doesn't make sense to do this until
|
| - // we've committed and have new textures.
|
| - forced_redraw_state_ = FORCED_REDRAW_STATE_WAITING_FOR_COMMIT;
|
| - }
|
| - break;
|
| - case DRAW_ABORTED_MISSING_HIGH_RES_CONTENT:
|
| - // It's not clear whether this missing content is because of missing
|
| - // pictures (which requires a commit) or because of memory pressure
|
| - // removing textures (which might not). To be safe, request a commit
|
| - // anyway.
|
| - needs_commit_ = true;
|
| - break;
|
| - }
|
| -}
|
| -
|
| -void SchedulerStateMachine::SetNeedsCommit() {
|
| - needs_commit_ = true;
|
| -}
|
| -
|
| -void SchedulerStateMachine::NotifyReadyToCommit() {
|
| - DCHECK(commit_state_ == COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED)
|
| - << AsValue()->ToString();
|
| - commit_state_ = COMMIT_STATE_READY_TO_COMMIT;
|
| - // In main thread low latency mode, commit should happen right after
|
| - // BeginFrame, meaning when this function is called, next action should be
|
| - // commit.
|
| - if (settings_.main_thread_should_always_be_low_latency)
|
| - DCHECK(ShouldCommit());
|
| -}
|
| -
|
| -void SchedulerStateMachine::BeginMainFrameAborted(CommitEarlyOutReason reason) {
|
| - DCHECK_EQ(commit_state_, COMMIT_STATE_BEGIN_MAIN_FRAME_SENT);
|
| - switch (reason) {
|
| - case CommitEarlyOutReason::ABORTED_OUTPUT_SURFACE_LOST:
|
| - case CommitEarlyOutReason::ABORTED_NOT_VISIBLE:
|
| - case CommitEarlyOutReason::ABORTED_DEFERRED_COMMIT:
|
| - commit_state_ = COMMIT_STATE_IDLE;
|
| - SetNeedsCommit();
|
| - return;
|
| - case CommitEarlyOutReason::FINISHED_NO_UPDATES:
|
| - bool commit_has_no_updates = true;
|
| - UpdateStateOnCommit(commit_has_no_updates);
|
| - return;
|
| - }
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidPrepareTiles() {
|
| - needs_prepare_tiles_ = false;
|
| - // "Fill" the PrepareTiles funnel.
|
| - prepare_tiles_funnel_++;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidLoseOutputSurface() {
|
| - if (output_surface_state_ == OUTPUT_SURFACE_LOST ||
|
| - output_surface_state_ == OUTPUT_SURFACE_CREATING)
|
| - return;
|
| - output_surface_state_ = OUTPUT_SURFACE_LOST;
|
| - needs_redraw_ = false;
|
| -}
|
| -
|
| -void SchedulerStateMachine::NotifyReadyToActivate() {
|
| - if (has_pending_tree_)
|
| - pending_tree_is_ready_for_activation_ = true;
|
| -}
|
| -
|
| -void SchedulerStateMachine::DidCreateAndInitializeOutputSurface() {
|
| - DCHECK_EQ(output_surface_state_, OUTPUT_SURFACE_CREATING);
|
| - output_surface_state_ = OUTPUT_SURFACE_WAITING_FOR_FIRST_COMMIT;
|
| -
|
| - if (did_create_and_initialize_first_output_surface_) {
|
| - // TODO(boliu): See if we can remove this when impl-side painting is always
|
| - // on. Does anything on the main thread need to update after recreate?
|
| - needs_commit_ = true;
|
| - }
|
| - did_create_and_initialize_first_output_surface_ = true;
|
| - pending_swaps_ = 0;
|
| -}
|
| -
|
| -void SchedulerStateMachine::NotifyBeginMainFrameStarted() {
|
| - DCHECK_EQ(commit_state_, COMMIT_STATE_BEGIN_MAIN_FRAME_SENT);
|
| - commit_state_ = COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED;
|
| -}
|
| -
|
| -bool SchedulerStateMachine::HasInitializedOutputSurface() const {
|
| - switch (output_surface_state_) {
|
| - case OUTPUT_SURFACE_LOST:
|
| - case OUTPUT_SURFACE_CREATING:
|
| - return false;
|
| -
|
| - case OUTPUT_SURFACE_ACTIVE:
|
| - case OUTPUT_SURFACE_WAITING_FOR_FIRST_COMMIT:
|
| - case OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION:
|
| - return true;
|
| - }
|
| - NOTREACHED();
|
| - return false;
|
| -}
|
| -
|
| -std::string SchedulerStateMachine::GetStatesForDebugging() const {
|
| - return base::StringPrintf("%c %d %d %d %c %c %c %d %d",
|
| - needs_commit_ ? 'T' : 'F',
|
| - static_cast<int>(output_surface_state_),
|
| - static_cast<int>(begin_impl_frame_state_),
|
| - static_cast<int>(commit_state_),
|
| - has_pending_tree_ ? 'T' : 'F',
|
| - pending_tree_is_ready_for_activation_ ? 'T' : 'F',
|
| - active_tree_needs_first_draw_ ? 'T' : 'F',
|
| - max_pending_swaps_,
|
| - pending_swaps_);
|
| -}
|
| -
|
| -} // namespace cc
|
|
|
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