dart::MonitorLocker Class Reference

#include <lockers.h>

Inheritance diagram for dart::MonitorLocker:

Public Member Functions
	MonitorLocker (Monitor *monitor, bool no_safepoint_scope=true)
virtual	~MonitorLocker ()
void	Enter () const
void	Exit () const
Monitor::WaitResult	Wait (int64_t millis=Monitor::kNoTimeout)
Monitor::WaitResult	WaitWithSafepointCheck (Thread *thread, int64_t millis=Monitor::kNoTimeout)
Monitor::WaitResult	WaitMicros (int64_t micros=Monitor::kNoTimeout)
void	Notify ()
void	NotifyAll ()
Public Member Functions inherited from dart::ValueObject
	ValueObject ()
	~ValueObject ()

Detailed Description

Definition at line 128 of file lockers.h.

Constructor & Destructor Documentation

MonitorLocker()

dart::MonitorLocker::MonitorLocker ( Monitor *  monitor, bool  no_safepoint_scope = true  )

inlineexplicit

Definition at line 130 of file lockers.h.

      : monitor_(monitor), no_safepoint_scope_(no_safepoint_scope) {
    ASSERT(monitor != nullptr);
#if defined(DEBUG)
    if (no_safepoint_scope_) {
      Thread* thread = Thread::Current();
      if (thread != nullptr) {
        thread->IncrementNoSafepointScopeDepth();
      } else {
        no_safepoint_scope_ = false;
      }
    }
#endif
    monitor_->Enter();
  }

~MonitorLocker()

virtual dart::MonitorLocker::~MonitorLocker ( )

inlinevirtual

Definition at line 146 of file lockers.h.

                           {
    monitor_->Exit();
#if defined(DEBUG)
    if (no_safepoint_scope_) {
      Thread::Current()->DecrementNoSafepointScopeDepth();
    }
#endif
  }

Member Function Documentation

Enter()

void dart::MonitorLocker::Enter ( ) const

inline

Definition at line 155 of file lockers.h.

                     {
#if defined(DEBUG)
    if (no_safepoint_scope_) {
      Thread::Current()->IncrementNoSafepointScopeDepth();
    }
#endif
    monitor_->Enter();
  }

Exit()

void dart::MonitorLocker::Exit ( ) const

inline

Definition at line 163 of file lockers.h.

                    {
    monitor_->Exit();
#if defined(DEBUG)
    if (no_safepoint_scope_) {
      Thread::Current()->DecrementNoSafepointScopeDepth();
    }
#endif
  }

Notify()

void dart::MonitorLocker::Notify ( )

inline

Definition at line 184 of file lockers.h.

{ monitor_->Notify(); }

NotifyAll()

void dart::MonitorLocker::NotifyAll ( )

inline

Definition at line 186 of file lockers.h.

{ monitor_->NotifyAll(); }

Wait()

Monitor::WaitResult dart::MonitorLocker::Wait ( int64_t  millis = Monitor::kNoTimeout )

inline

Definition at line 172 of file lockers.h.

                                                             {
    return monitor_->Wait(millis);
  }

WaitMicros()

Monitor::WaitResult dart::MonitorLocker::WaitMicros ( int64_t  micros = Monitor::kNoTimeout )

inline

Definition at line 180 of file lockers.h.

                                                                   {
    return monitor_->WaitMicros(micros);
  }

WaitWithSafepointCheck()

Monitor::WaitResult dart::MonitorLocker::WaitWithSafepointCheck	(	Thread *	thread,
		int64_t	millis = Monitor::kNoTimeout
	)

Definition at line 12 of file lockers.cc.

                                                                          {
  ASSERT(thread == Thread::Current());
  ASSERT(thread->execution_state() == Thread::kThreadInVM);
#if defined(DEBUG)
  if (no_safepoint_scope_) {
    thread->DecrementNoSafepointScopeDepth();
  }
#endif
  thread->set_execution_state(Thread::kThreadInBlockedState);
  thread->EnterSafepoint();
  Monitor::WaitResult result = monitor_->Wait(millis);
  // First try a fast update of the thread state to indicate it is not at a
  // safepoint anymore.
  if (!thread->TryExitSafepoint()) {
    // Fast update failed which means we could potentially be in the middle
    // of a safepoint operation and need to block for it.
    monitor_->Exit();
    thread->ExitSafepointUsingLock();
    monitor_->Enter();
  }
  thread->set_execution_state(Thread::kThreadInVM);
#if defined(DEBUG)
  if (no_safepoint_scope_) {
    thread->IncrementNoSafepointScopeDepth();
  }
#endif
  return result;
}

---

The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/lockers.h
• third_party/dart-lang/sdk/runtime/vm/lockers.cc