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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/trees/presentation_time_callback_buffer.h"
#include <utility>
#include <vector>
#include "components/viz/common/quads/compositor_frame_metadata.h"
namespace cc {
PresentationTimeCallbackBuffer::PresentationTimeCallbackBuffer() = default;
PresentationTimeCallbackBuffer::PresentationTimeCallbackBuffer(
PresentationTimeCallbackBuffer&& other)
: frame_token_infos_(std::move(other.frame_token_infos_)) {}
PresentationTimeCallbackBuffer& PresentationTimeCallbackBuffer::operator=(
PresentationTimeCallbackBuffer&& other) {
if (this != &other) {
frame_token_infos_ = std::move(other.frame_token_infos_);
}
return *this;
}
PresentationTimeCallbackBuffer::~PresentationTimeCallbackBuffer() = default;
PresentationTimeCallbackBuffer::FrameTokenInfo::FrameTokenInfo(uint32_t token)
: token(token) {}
PresentationTimeCallbackBuffer::FrameTokenInfo::FrameTokenInfo(
FrameTokenInfo&&) = default;
PresentationTimeCallbackBuffer::FrameTokenInfo&
PresentationTimeCallbackBuffer::FrameTokenInfo::operator=(FrameTokenInfo&&) =
default;
PresentationTimeCallbackBuffer::FrameTokenInfo::~FrameTokenInfo() = default;
void PresentationTimeCallbackBuffer::RegisterMainThreadCallbacks(
uint32_t frame_token,
std::vector<Callback> callbacks) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (callbacks.empty())
return;
// Splice the given `callbacks` onto the vector of existing callbacks.
auto& sink = GetOrMakeRegistration(frame_token).main_callbacks;
sink.reserve(sink.size() + callbacks.size());
std::ranges::move(callbacks, std::back_inserter(sink));
}
void PresentationTimeCallbackBuffer::RegisterMainThreadSuccessfulCallbacks(
uint32_t frame_token,
std::vector<SuccessfulCallbackWithDetails> callbacks) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (callbacks.empty())
return;
// Splice the given `callbacks` onto the vector of existing callbacks.
auto& sink = GetOrMakeRegistration(frame_token).main_successful_callbacks;
sink.reserve(sink.size() + callbacks.size());
std::ranges::move(callbacks, std::back_inserter(sink));
}
void PresentationTimeCallbackBuffer::
RegisterCompositorThreadSuccessfulCallbacks(
uint32_t frame_token,
std::vector<SuccessfulCallback> callbacks) {
if (callbacks.empty())
return;
// Splice the given |callbacks| onto the vector of existing callbacks.
std::vector<SuccessfulCallback>& sink =
GetOrMakeRegistration(frame_token).compositor_successful_callbacks;
sink.reserve(sink.size() + callbacks.size());
std::ranges::move(callbacks, std::back_inserter(sink));
}
PresentationTimeCallbackBuffer::PendingCallbacks::PendingCallbacks() = default;
PresentationTimeCallbackBuffer::PendingCallbacks::PendingCallbacks(
PendingCallbacks&&) = default;
PresentationTimeCallbackBuffer::PendingCallbacks&
PresentationTimeCallbackBuffer::PendingCallbacks::operator=(
PendingCallbacks&&) = default;
PresentationTimeCallbackBuffer::PendingCallbacks::~PendingCallbacks() = default;
PresentationTimeCallbackBuffer::PendingCallbacks
PresentationTimeCallbackBuffer::PopPendingCallbacks(uint32_t frame_token,
bool presentation_failed) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
PendingCallbacks result;
for (auto info = frame_token_infos_.begin();
info != frame_token_infos_.end();) {
if (viz::FrameTokenGT(info->token, frame_token))
break;
// Presentation time callbacks should be run whether presentation was
// successful or not.
std::ranges::move(info->main_callbacks,
std::back_inserter(result.main_callbacks));
info->main_callbacks.clear();
const bool should_keep_info =
presentation_failed && (!info->main_successful_callbacks.empty() ||
!info->compositor_successful_callbacks.empty());
if (should_keep_info) {
++info;
} else {
// Successful presentation time callbacks should only be run when the
// presentation was successful.
std::ranges::move(info->main_successful_callbacks,
std::back_inserter(result.main_successful_callbacks));
std::ranges::move(
info->compositor_successful_callbacks,
std::back_inserter(result.compositor_successful_callbacks));
info = frame_token_infos_.erase(info);
}
}
return result;
}
PresentationTimeCallbackBuffer::FrameTokenInfo&
PresentationTimeCallbackBuffer::GetOrMakeRegistration(uint32_t frame_token) {
// If the freshest registration is for an earlier frame token, add a new
// entry to the queue.
if (frame_token_infos_.empty() ||
viz::FrameTokenGT(frame_token, frame_token_infos_.back().token)) {
frame_token_infos_.emplace_back(frame_token);
DCHECK_LE(frame_token_infos_.size(), kMaxBufferSize);
}
// Registrations should use monotonically increasing frame tokens.
DCHECK_EQ(frame_token_infos_.back().token, frame_token);
return frame_token_infos_.back();
}
} // namespace cc
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