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// Copyright 2018 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_loop/message_loop_current.h"
#include "base/bind.h"
#include "base/message_loop/message_pump_for_io.h"
#include "base/message_loop/message_pump_for_ui.h"
#include "base/message_loop/message_pump_type.h"
#include "base/no_destructor.h"
#include "base/task/sequence_manager/sequence_manager_impl.h"
#include "base/threading/thread_local.h"
#include "base/threading/thread_task_runner_handle.h"
namespace base {
//------------------------------------------------------------------------------
// MessageLoopCurrent
// static
sequence_manager::internal::SequenceManagerImpl*
MessageLoopCurrent::GetCurrentSequenceManagerImpl() {
return sequence_manager::internal::SequenceManagerImpl::GetCurrent();
}
// static
MessageLoopCurrent MessageLoopCurrent::Get() {
return MessageLoopCurrent(GetCurrentSequenceManagerImpl());
}
// static
MessageLoopCurrent MessageLoopCurrent::GetNull() {
return MessageLoopCurrent(nullptr);
}
// static
bool MessageLoopCurrent::IsSet() {
return !!GetCurrentSequenceManagerImpl();
}
void MessageLoopCurrent::AddDestructionObserver(
DestructionObserver* destruction_observer) {
DCHECK(current_->IsBoundToCurrentThread());
current_->AddDestructionObserver(destruction_observer);
}
void MessageLoopCurrent::RemoveDestructionObserver(
DestructionObserver* destruction_observer) {
DCHECK(current_->IsBoundToCurrentThread());
current_->RemoveDestructionObserver(destruction_observer);
}
void MessageLoopCurrent::SetTaskRunner(
scoped_refptr<SingleThreadTaskRunner> task_runner) {
DCHECK(current_->IsBoundToCurrentThread());
current_->SetTaskRunner(std::move(task_runner));
}
bool MessageLoopCurrent::IsBoundToCurrentThread() const {
return current_ == GetCurrentSequenceManagerImpl();
}
bool MessageLoopCurrent::IsIdleForTesting() {
DCHECK(current_->IsBoundToCurrentThread());
return current_->IsIdleForTesting();
}
void MessageLoopCurrent::AddTaskObserver(TaskObserver* task_observer) {
DCHECK(current_->IsBoundToCurrentThread());
current_->AddTaskObserver(task_observer);
}
void MessageLoopCurrent::RemoveTaskObserver(TaskObserver* task_observer) {
DCHECK(current_->IsBoundToCurrentThread());
current_->RemoveTaskObserver(task_observer);
}
void MessageLoopCurrent::SetAddQueueTimeToTasks(bool enable) {
DCHECK(current_->IsBoundToCurrentThread());
current_->SetAddQueueTimeToTasks(enable);
}
void MessageLoopCurrent::SetNestableTasksAllowed(bool allowed) {
DCHECK(current_->IsBoundToCurrentThread());
current_->SetTaskExecutionAllowed(allowed);
}
bool MessageLoopCurrent::NestableTasksAllowed() const {
return current_->IsTaskExecutionAllowed();
}
MessageLoopCurrent::ScopedNestableTaskAllower::ScopedNestableTaskAllower()
: sequence_manager_(GetCurrentSequenceManagerImpl()),
old_state_(sequence_manager_->IsTaskExecutionAllowed()) {
sequence_manager_->SetTaskExecutionAllowed(true);
}
MessageLoopCurrent::ScopedNestableTaskAllower::~ScopedNestableTaskAllower() {
sequence_manager_->SetTaskExecutionAllowed(old_state_);
}
bool MessageLoopCurrent::operator==(const MessageLoopCurrent& other) const {
return current_ == other.current_;
}
#if !defined(OS_NACL)
//------------------------------------------------------------------------------
// MessageLoopCurrentForUI
// static
MessageLoopCurrentForUI MessageLoopCurrentForUI::Get() {
auto* sequence_manager = GetCurrentSequenceManagerImpl();
DCHECK(sequence_manager);
#if defined(OS_ANDROID)
DCHECK(sequence_manager->IsType(MessagePumpType::UI) ||
sequence_manager->IsType(MessagePumpType::JAVA));
#else // defined(OS_ANDROID)
DCHECK(sequence_manager->IsType(MessagePumpType::UI));
#endif // defined(OS_ANDROID)
return MessageLoopCurrentForUI(sequence_manager);
}
// static
bool MessageLoopCurrentForUI::IsSet() {
sequence_manager::internal::SequenceManagerImpl* sequence_manager =
GetCurrentSequenceManagerImpl();
return sequence_manager &&
#if defined(OS_ANDROID)
(sequence_manager->IsType(MessagePumpType::UI) ||
sequence_manager->IsType(MessagePumpType::JAVA));
#else // defined(OS_ANDROID)
sequence_manager->IsType(MessagePumpType::UI);
#endif // defined(OS_ANDROID)
}
MessagePumpForUI* MessageLoopCurrentForUI::GetMessagePumpForUI() const {
return static_cast<MessagePumpForUI*>(current_->GetMessagePump());
}
#if defined(USE_OZONE) && !defined(OS_FUCHSIA) && !defined(OS_WIN)
bool MessageLoopCurrentForUI::WatchFileDescriptor(
int fd,
bool persistent,
MessagePumpForUI::Mode mode,
MessagePumpForUI::FdWatchController* controller,
MessagePumpForUI::FdWatcher* delegate) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForUI()->WatchFileDescriptor(fd, persistent, mode,
controller, delegate);
}
#endif
#if defined(OS_IOS)
void MessageLoopCurrentForUI::Attach() {
current_->AttachToMessagePump();
}
#endif // defined(OS_IOS)
#if defined(OS_ANDROID)
void MessageLoopCurrentForUI::Abort() {
GetMessagePumpForUI()->Abort();
}
#endif // defined(OS_ANDROID)
#if defined(OS_WIN)
void MessageLoopCurrentForUI::AddMessagePumpObserver(
MessagePumpForUI::Observer* observer) {
GetMessagePumpForUI()->AddObserver(observer);
}
void MessageLoopCurrentForUI::RemoveMessagePumpObserver(
MessagePumpForUI::Observer* observer) {
GetMessagePumpForUI()->RemoveObserver(observer);
}
#endif // defined(OS_WIN)
#endif // !defined(OS_NACL)
//------------------------------------------------------------------------------
// MessageLoopCurrentForIO
// static
MessageLoopCurrentForIO MessageLoopCurrentForIO::Get() {
auto* sequence_manager = GetCurrentSequenceManagerImpl();
DCHECK(sequence_manager);
DCHECK(sequence_manager->IsType(MessagePumpType::IO));
return MessageLoopCurrentForIO(sequence_manager);
}
// static
bool MessageLoopCurrentForIO::IsSet() {
auto* sequence_manager = GetCurrentSequenceManagerImpl();
return sequence_manager && sequence_manager->IsType(MessagePumpType::IO);
}
MessagePumpForIO* MessageLoopCurrentForIO::GetMessagePumpForIO() const {
return static_cast<MessagePumpForIO*>(current_->GetMessagePump());
}
#if !defined(OS_NACL_SFI)
#if defined(OS_WIN)
HRESULT MessageLoopCurrentForIO::RegisterIOHandler(
HANDLE file,
MessagePumpForIO::IOHandler* handler) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForIO()->RegisterIOHandler(file, handler);
}
bool MessageLoopCurrentForIO::RegisterJobObject(
HANDLE job,
MessagePumpForIO::IOHandler* handler) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForIO()->RegisterJobObject(job, handler);
}
bool MessageLoopCurrentForIO::WaitForIOCompletion(
DWORD timeout,
MessagePumpForIO::IOHandler* filter) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForIO()->WaitForIOCompletion(timeout, filter);
}
#elif defined(OS_POSIX) || defined(OS_FUCHSIA)
bool MessageLoopCurrentForIO::WatchFileDescriptor(
int fd,
bool persistent,
MessagePumpForIO::Mode mode,
MessagePumpForIO::FdWatchController* controller,
MessagePumpForIO::FdWatcher* delegate) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForIO()->WatchFileDescriptor(fd, persistent, mode,
controller, delegate);
}
#endif // defined(OS_WIN)
#if defined(OS_MACOSX) && !defined(OS_IOS)
bool MessageLoopCurrentForIO::WatchMachReceivePort(
mach_port_t port,
MessagePumpForIO::MachPortWatchController* controller,
MessagePumpForIO::MachPortWatcher* delegate) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForIO()->WatchMachReceivePort(port, controller,
delegate);
}
#endif
#endif // !defined(OS_NACL_SFI)
#if defined(OS_FUCHSIA)
// Additional watch API for native platform resources.
bool MessageLoopCurrentForIO::WatchZxHandle(
zx_handle_t handle,
bool persistent,
zx_signals_t signals,
MessagePumpForIO::ZxHandleWatchController* controller,
MessagePumpForIO::ZxHandleWatcher* delegate) {
DCHECK(current_->IsBoundToCurrentThread());
return GetMessagePumpForIO()->WatchZxHandle(handle, persistent, signals,
controller, delegate);
}
#endif
} // namespace base
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