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// Copyright 2013 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/trees/latency_info_swap_promise_monitor.h"
#include "base/threading/platform_thread.h"
#include "cc/output/latency_info_swap_promise.h"
#include "cc/trees/layer_tree_host.h"
#include "cc/trees/layer_tree_host_impl.h"
#include "cc/trees/layer_tree_impl.h"
namespace {
bool AddRenderingScheduledComponent(ui::LatencyInfo* latency_info,
bool on_main) {
ui::LatencyComponentType type =
on_main ? ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_MAIN_COMPONENT
: ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_IMPL_COMPONENT;
if (latency_info->FindLatency(type, 0, nullptr))
return false;
latency_info->AddLatencyNumber(type, 0, 0);
return true;
}
bool AddForwardingScrollUpdateToMainComponent(ui::LatencyInfo* latency_info) {
if (latency_info->FindLatency(
ui::INPUT_EVENT_LATENCY_FORWARD_SCROLL_UPDATE_TO_MAIN_COMPONENT, 0,
nullptr))
return false;
latency_info->AddLatencyNumber(
ui::INPUT_EVENT_LATENCY_FORWARD_SCROLL_UPDATE_TO_MAIN_COMPONENT, 0,
latency_info->trace_id());
return true;
}
} // namespace
namespace cc {
LatencyInfoSwapPromiseMonitor::LatencyInfoSwapPromiseMonitor(
ui::LatencyInfo* latency,
LayerTreeHost* layer_tree_host,
LayerTreeHostImpl* layer_tree_host_impl)
: SwapPromiseMonitor(layer_tree_host, layer_tree_host_impl),
latency_(latency) {
}
LatencyInfoSwapPromiseMonitor::~LatencyInfoSwapPromiseMonitor() {
}
void LatencyInfoSwapPromiseMonitor::OnSetNeedsCommitOnMain() {
if (AddRenderingScheduledComponent(latency_, true /* on_main */)) {
scoped_ptr<SwapPromise> swap_promise(new LatencyInfoSwapPromise(*latency_));
layer_tree_host_->QueueSwapPromise(swap_promise.Pass());
}
}
void LatencyInfoSwapPromiseMonitor::OnSetNeedsRedrawOnImpl() {
if (AddRenderingScheduledComponent(latency_, false /* on_main */)) {
scoped_ptr<SwapPromise> swap_promise(new LatencyInfoSwapPromise(*latency_));
// Queue a pinned swap promise on the active tree. This will allow
// measurement of the time to the next SwapBuffers(). The swap
// promise is pinned so that it is not interrupted by new incoming
// activations (which would otherwise break the swap promise).
layer_tree_host_impl_->active_tree()->QueuePinnedSwapPromise(
swap_promise.Pass());
}
}
void LatencyInfoSwapPromiseMonitor::OnForwardScrollUpdateToMainThreadOnImpl() {
if (AddForwardingScrollUpdateToMainComponent(latency_)) {
int64 new_sequence_number = 0;
for (ui::LatencyInfo::LatencyMap::const_iterator it =
latency_->latency_components().begin();
it != latency_->latency_components().end(); ++it) {
if (it->first.first == ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT) {
new_sequence_number =
((static_cast<int64>(base::PlatformThread::CurrentId()) << 32) ^
(reinterpret_cast<uint64>(this) << 32)) |
(it->second.sequence_number & 0xffffffff);
if (new_sequence_number == it->second.sequence_number)
return;
break;
}
}
if (!new_sequence_number)
return;
ui::LatencyInfo new_latency;
new_latency.AddLatencyNumberWithTraceName(
ui::LATENCY_BEGIN_SCROLL_LISTENER_UPDATE_MAIN_COMPONENT, 0,
new_sequence_number, "ScrollUpdate");
new_latency.CopyLatencyFrom(
*latency_,
ui::INPUT_EVENT_LATENCY_FORWARD_SCROLL_UPDATE_TO_MAIN_COMPONENT);
scoped_ptr<SwapPromise> swap_promise(
new LatencyInfoSwapPromise(new_latency));
layer_tree_host_impl_->QueueSwapPromiseForMainThreadScrollUpdate(
swap_promise.Pass());
}
}
} // namespace cc
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