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, |
- const Handle& handle, |
- 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); |
-} |
- |
-void RunLoop::RunInternal(RunMode run_mode) { |
- assert(current() == this); |
- RunState* old_state = run_state_; |
- RunState run_state; |
- run_state_ = &run_state; |
- 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; |
-} |
- |
-bool RunLoop::DoDelayedWork() { |
- MojoTimeTicks now = GetTimeTicksNow(); |
- if (!delayed_tasks_.empty() && delayed_tasks_.top().run_time <= now) { |
- PendingTask task = delayed_tasks_.top(); |
- delayed_tasks_.pop(); |
- task.task.Run(); |
- return true; |
- } |
- return false; |
-} |
- |
-void RunLoop::Quit() { |
- assert(current() == this); |
- if (run_state_) |
- run_state_->should_quit = true; |
-} |
- |
-void RunLoop::PostDelayedTask(const Closure& task, MojoTimeTicks delay) { |
- assert(current() == this); |
- 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()) |
- Quit(); |
- return false; |
- } |
- |
- const WaitManyResult wmr = |
- 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); |
- } |
- |
- 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 |