| Index: mojo/public/cpp/utility/lib/run_loop.cc
|
| diff --git a/mojo/public/cpp/utility/lib/run_loop.cc b/mojo/public/cpp/utility/lib/run_loop.cc
|
| deleted file mode 100644
|
| index 7faf748f757808f0e6df9c188483073184727130..0000000000000000000000000000000000000000
|
| --- a/mojo/public/cpp/utility/lib/run_loop.cc
|
| +++ /dev/null
|
| @@ -1,267 +0,0 @@
|
| -// Copyright 2014 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 "mojo/public/cpp/utility/run_loop.h"
|
| -
|
| -#include <assert.h>
|
| -
|
| -#include <algorithm>
|
| -#include <vector>
|
| -
|
| -#include "mojo/public/cpp/utility/lib/thread_local.h"
|
| -#include "mojo/public/cpp/utility/run_loop_handler.h"
|
| -
|
| -namespace mojo {
|
| -namespace {
|
| -
|
| -internal::ThreadLocalPointer<RunLoop> current_run_loop;
|
| -
|
| -const MojoTimeTicks kInvalidTimeTicks = static_cast<MojoTimeTicks>(0);
|
| -
|
| -} // namespace
|
| -
|
| -// State needed for one iteration of WaitMany().
|
| -struct RunLoop::WaitState {
|
| - WaitState() : deadline(MOJO_DEADLINE_INDEFINITE) {}
|
| -
|
| - std::vector<Handle> handles;
|
| - std::vector<MojoHandleSignals> handle_signals;
|
| - MojoDeadline deadline;
|
| -};
|
| -
|
| -struct RunLoop::RunState {
|
| - RunState() : should_quit(false) {}
|
| -
|
| - bool should_quit;
|
| -};
|
| -
|
| -RunLoop::RunLoop()
|
| - : run_state_(nullptr), next_handler_id_(0), next_sequence_number_(0) {
|
| - assert(!current());
|
| - current_run_loop.Set(this);
|
| -}
|
| -
|
| -RunLoop::~RunLoop() {
|
| - assert(current() == this);
|
| - NotifyHandlers(MOJO_RESULT_ABORTED, IGNORE_DEADLINE);
|
| - current_run_loop.Set(nullptr);
|
| -}
|
| -
|
| -// static
|
| -void RunLoop::SetUp() {
|
| - current_run_loop.Allocate();
|
| -}
|
| -
|
| -// static
|
| -void RunLoop::TearDown() {
|
| - assert(!current());
|
| - current_run_loop.Free();
|
| -}
|
| -
|
| -// static
|
| -RunLoop* RunLoop::current() {
|
| - return current_run_loop.Get();
|
| -}
|
| -
|
| -void RunLoop::AddHandler(RunLoopHandler* handler,
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| - const Handle& handle,
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| - MojoHandleSignals handle_signals,
|
| - MojoDeadline deadline) {
|
| - assert(current() == this);
|
| - assert(handler);
|
| - assert(handle.is_valid());
|
| - // Assume it's an error if someone tries to reregister an existing handle.
|
| - assert(0u == handler_data_.count(handle));
|
| - HandlerData handler_data;
|
| - handler_data.handler = handler;
|
| - handler_data.handle_signals = handle_signals;
|
| - handler_data.deadline =
|
| - (deadline == MOJO_DEADLINE_INDEFINITE)
|
| - ? kInvalidTimeTicks
|
| - : GetTimeTicksNow() + static_cast<MojoTimeTicks>(deadline);
|
| - handler_data.id = next_handler_id_++;
|
| - handler_data_[handle] = handler_data;
|
| -}
|
| -
|
| -void RunLoop::RemoveHandler(const Handle& handle) {
|
| - assert(current() == this);
|
| - handler_data_.erase(handle);
|
| -}
|
| -
|
| -bool RunLoop::HasHandler(const Handle& handle) const {
|
| - return handler_data_.find(handle) != handler_data_.end();
|
| -}
|
| -
|
| -void RunLoop::Run() {
|
| - RunInternal(UNTIL_EMPTY);
|
| -}
|
| -
|
| -void RunLoop::RunUntilIdle() {
|
| - RunInternal(UNTIL_IDLE);
|
| -}
|
| -
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| -void RunLoop::RunInternal(RunMode run_mode) {
|
| - assert(current() == this);
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| - RunState* old_state = run_state_;
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| - RunState run_state;
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| - run_state_ = &run_state;
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| - for (;;) {
|
| - bool did_work = DoDelayedWork();
|
| - if (run_state.should_quit)
|
| - break;
|
| - did_work |= Wait(run_mode == UNTIL_IDLE);
|
| - if (run_state.should_quit)
|
| - break;
|
| - if (!did_work && run_mode == UNTIL_IDLE)
|
| - break;
|
| - }
|
| - run_state_ = old_state;
|
| -}
|
| -
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| -bool RunLoop::DoDelayedWork() {
|
| - MojoTimeTicks now = GetTimeTicksNow();
|
| - if (!delayed_tasks_.empty() && delayed_tasks_.top().run_time <= now) {
|
| - PendingTask task = delayed_tasks_.top();
|
| - delayed_tasks_.pop();
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| - task.task.Run();
|
| - return true;
|
| - }
|
| - return false;
|
| -}
|
| -
|
| -void RunLoop::Quit() {
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| - assert(current() == this);
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| - if (run_state_)
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| - run_state_->should_quit = true;
|
| -}
|
| -
|
| -void RunLoop::PostDelayedTask(const Closure& task, MojoTimeTicks delay) {
|
| - assert(current() == this);
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| - MojoTimeTicks run_time = delay + GetTimeTicksNow();
|
| - delayed_tasks_.push(PendingTask(task, run_time, next_sequence_number_++));
|
| -}
|
| -
|
| -bool RunLoop::Wait(bool non_blocking) {
|
| - const WaitState wait_state = GetWaitState(non_blocking);
|
| - if (wait_state.handles.empty()) {
|
| - if (delayed_tasks_.empty())
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| - Quit();
|
| - return false;
|
| - }
|
| -
|
| - const WaitManyResult wmr =
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| - WaitMany(wait_state.handles, wait_state.handle_signals,
|
| - wait_state.deadline, nullptr);
|
| -
|
| - if (!wmr.IsIndexValid()) {
|
| - assert(wmr.result == MOJO_RESULT_DEADLINE_EXCEEDED);
|
| - return NotifyHandlers(MOJO_RESULT_DEADLINE_EXCEEDED, CHECK_DEADLINE);
|
| - }
|
| -
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| - Handle handle = wait_state.handles[wmr.index];
|
| - assert(handler_data_.find(handle) != handler_data_.end());
|
| - RunLoopHandler* handler = handler_data_[handle].handler;
|
| -
|
| - switch (wmr.result) {
|
| - case MOJO_RESULT_OK:
|
| - handler->OnHandleReady(handle);
|
| - return true;
|
| - case MOJO_RESULT_INVALID_ARGUMENT:
|
| - case MOJO_RESULT_FAILED_PRECONDITION:
|
| - // Remove the handle first, this way if OnHandleError() tries to remove
|
| - // the handle our iterator isn't invalidated.
|
| - handler_data_.erase(handle);
|
| - handler->OnHandleError(handle, wmr.result);
|
| - return true;
|
| - default:
|
| - assert(false);
|
| - return false;
|
| - }
|
| -}
|
| -
|
| -bool RunLoop::NotifyHandlers(MojoResult error, CheckDeadline check) {
|
| - bool notified = false;
|
| -
|
| - // Make a copy in case someone tries to add/remove new handlers as part of
|
| - // notifying.
|
| - const HandleToHandlerData cloned_handlers(handler_data_);
|
| - const MojoTimeTicks now(GetTimeTicksNow());
|
| - for (HandleToHandlerData::const_iterator i = cloned_handlers.begin();
|
| - i != cloned_handlers.end();
|
| - ++i) {
|
| - // Only check deadline exceeded if that's what we're notifying.
|
| - if (check == CHECK_DEADLINE &&
|
| - (i->second.deadline == kInvalidTimeTicks || i->second.deadline > now)) {
|
| - continue;
|
| - }
|
| -
|
| - // Since we're iterating over a clone of the handlers, verify the handler
|
| - // is still valid before notifying.
|
| - if (handler_data_.find(i->first) == handler_data_.end() ||
|
| - handler_data_[i->first].id != i->second.id) {
|
| - continue;
|
| - }
|
| -
|
| - RunLoopHandler* handler = i->second.handler;
|
| - handler_data_.erase(i->first);
|
| - handler->OnHandleError(i->first, error);
|
| - notified = true;
|
| - }
|
| -
|
| - return notified;
|
| -}
|
| -
|
| -RunLoop::WaitState RunLoop::GetWaitState(bool non_blocking) const {
|
| - WaitState wait_state;
|
| - MojoTimeTicks min_time = kInvalidTimeTicks;
|
| - for (HandleToHandlerData::const_iterator i = handler_data_.begin();
|
| - i != handler_data_.end();
|
| - ++i) {
|
| - wait_state.handles.push_back(i->first);
|
| - wait_state.handle_signals.push_back(i->second.handle_signals);
|
| - if (!non_blocking && i->second.deadline != kInvalidTimeTicks &&
|
| - (min_time == kInvalidTimeTicks || i->second.deadline < min_time)) {
|
| - min_time = i->second.deadline;
|
| - }
|
| - }
|
| - if (!delayed_tasks_.empty()) {
|
| - MojoTimeTicks delayed_min_time = delayed_tasks_.top().run_time;
|
| - if (min_time == kInvalidTimeTicks)
|
| - min_time = delayed_min_time;
|
| - else
|
| - min_time = std::min(min_time, delayed_min_time);
|
| - }
|
| - if (non_blocking) {
|
| - wait_state.deadline = static_cast<MojoDeadline>(0);
|
| - } else if (min_time != kInvalidTimeTicks) {
|
| - const MojoTimeTicks now = GetTimeTicksNow();
|
| - if (min_time < now)
|
| - wait_state.deadline = static_cast<MojoDeadline>(0);
|
| - else
|
| - wait_state.deadline = static_cast<MojoDeadline>(min_time - now);
|
| - }
|
| - return wait_state;
|
| -}
|
| -
|
| -RunLoop::PendingTask::PendingTask(const Closure& task,
|
| - MojoTimeTicks run_time,
|
| - uint64_t sequence_number)
|
| - : task(task), run_time(run_time), sequence_number(sequence_number) {
|
| -}
|
| -
|
| -RunLoop::PendingTask::~PendingTask() {
|
| -}
|
| -
|
| -bool RunLoop::PendingTask::operator<(const RunLoop::PendingTask& other) const {
|
| - if (run_time != other.run_time) {
|
| - // std::priority_queue<> puts the least element at the end of the queue. We
|
| - // want the soonest eligible task to be at the head of the queue, so
|
| - // run_times further in the future are considered lesser.
|
| - return run_time > other.run_time;
|
| - }
|
| -
|
| - return sequence_number > other.sequence_number;
|
| -}
|
| -
|
| -} // namespace mojo
|
|
|