From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- ipc/chromium/src/base/message_pump_android.cc | 104 ++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 ipc/chromium/src/base/message_pump_android.cc (limited to 'ipc/chromium/src/base/message_pump_android.cc') diff --git a/ipc/chromium/src/base/message_pump_android.cc b/ipc/chromium/src/base/message_pump_android.cc new file mode 100644 index 0000000000..6d35534e5c --- /dev/null +++ b/ipc/chromium/src/base/message_pump_android.cc @@ -0,0 +1,104 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +// Copyright (c) 2010 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 "base/message_pump_android.h" + +#include +#include + +#include "base/eintr_wrapper.h" +#include "base/logging.h" +#include "base/platform_thread.h" + +namespace mozilla { +bool ProcessNextEvent(); +void NotifyEvent(); +} // namespace mozilla + +namespace base { + +MessagePumpForUI::MessagePumpForUI() : state_(NULL) {} + +MessagePumpForUI::~MessagePumpForUI() {} + +void MessagePumpForUI::Run(Delegate* delegate) { + RunState state; + state.delegate = delegate; + state.should_quit = false; + state.run_depth = state_ ? state_->run_depth + 1 : 1; + // We really only do a single task for each iteration of the loop. If we + // have done something, assume there is likely something more to do. This + // will mean that we don't block on the message pump until there was nothing + // more to do. We also set this to true to make sure not to block on the + // first iteration of the loop, so RunAllPending() works correctly. + state.more_work_is_plausible = true; + + RunState* previous_state = state_; + state_ = &state; + + // We run our own loop instead of using g_main_loop_quit in one of the + // callbacks. This is so we only quit our own loops, and we don't quit + // nested loops run by others. TODO(deanm): Is this what we want? + + while (!state_->should_quit) { + mozilla::ProcessNextEvent(); + if (work_scheduled) { + work_scheduled = false; + HandleDispatch(); + } + } + + state_ = previous_state; +} + +void MessagePumpForUI::HandleDispatch() { + // We should only ever have a single message on the wakeup pipe, since we + // are only signaled when the queue went from empty to non-empty. The qApp + // poll will tell us whether there was data, so this read shouldn't block. + if (state_->should_quit) return; + + state_->more_work_is_plausible = false; + + if (state_->delegate->DoWork()) state_->more_work_is_plausible = true; + + if (state_->should_quit) return; + + if (state_->delegate->DoDelayedWork(&delayed_work_time_)) + state_->more_work_is_plausible = true; + if (state_->should_quit) return; + + // Don't do idle work if we think there are more important things + // that we could be doing. + if (state_->more_work_is_plausible) return; + + if (state_->delegate->DoIdleWork()) state_->more_work_is_plausible = true; + if (state_->should_quit) return; +} + +void MessagePumpForUI::Quit() { + if (state_) { + state_->should_quit = true; + } else { + NOTREACHED() << "Quit called outside Run!"; + } +} + +void MessagePumpForUI::ScheduleWork() { + // This can be called on any thread, so we don't want to touch any state + // variables as we would then need locks all over. This ensures that if + // we are sleeping in a poll that we will wake up. + work_scheduled = true; + mozilla::NotifyEvent(); +} + +void MessagePumpForUI::ScheduleDelayedWork(const TimeTicks& delayed_work_time) { + // We need to wake up the loop in case the poll timeout needs to be + // adjusted. This will cause us to try to do work, but that's ok. + delayed_work_time_ = delayed_work_time; + ScheduleWork(); +} + +} // namespace base -- cgit v1.2.3