C++ (Cpp) _Mutex_Acquire_slow示例

示例#1

void _Mutex_recursive_Acquire( struct _Mutex_recursive_Control *_mutex )
{
  Mutex_recursive_Control *mutex;
  Thread_queue_Context     queue_context;
  ISR_Level             level;
  Thread_Control          *executing;
  Thread_Control          *owner;

  mutex = _Mutex_recursive_Get( _mutex );
  _Thread_queue_Context_initialize( &queue_context );
  _Thread_queue_Context_ISR_disable( &queue_context, level );
  executing = _Mutex_Queue_acquire_critical( &mutex->Mutex, &queue_context );

  owner = mutex->Mutex.Queue.Queue.owner;

  if ( __predict_true( owner == NULL ) ) {
    mutex->Mutex.Queue.Queue.owner = executing;
    _Thread_Resource_count_increment( executing );
    _Mutex_Queue_release( &mutex->Mutex, level, &queue_context );
  } else if ( owner == executing ) {
    ++mutex->nest_level;
    _Mutex_Queue_release( &mutex->Mutex, level, &queue_context );
  } else {
    _Thread_queue_Context_set_no_timeout( &queue_context );
    _Mutex_Acquire_slow( &mutex->Mutex, owner, executing, level, &queue_context );
  }
}

示例#2

文件： mutex.c 项目： valabojub79/rtems-iAptiv-Port

void _Mutex_recursive_Acquire( struct _Mutex_recursive_Control *_mutex )
{
  Mutex_recursive_Control *mutex;
  Thread_queue_Context     queue_context;
  Thread_Control          *executing;
  Thread_Control          *owner;

  mutex = _Mutex_recursive_Get( _mutex );
  _Thread_queue_Context_initialize( &queue_context );
  executing = _Mutex_Queue_acquire( &mutex->Mutex, &queue_context );

  owner = mutex->Mutex.Queue.Queue.owner;

  if ( __predict_true( owner == NULL ) ) {
    mutex->Mutex.Queue.Queue.owner = executing;
    ++executing->resource_count;
    _Mutex_Queue_release( &mutex->Mutex, &queue_context );
  } else if ( owner == executing ) {
    ++mutex->nest_level;
    _Mutex_Queue_release( &mutex->Mutex, &queue_context );
  } else {
    _Thread_queue_Context_set_no_timeout( &queue_context );
    _Mutex_Acquire_slow( &mutex->Mutex, owner, executing, &queue_context );
  }
}

示例#3

文件： mutex.c 项目： ketul93/rtems

int _Mutex_recursive_Acquire_timed(
  struct _Mutex_recursive_Control *_mutex,
  const struct timespec           *abstime
)
{
  Mutex_recursive_Control *mutex;
  ISR_lock_Context         lock_context;
  Thread_Control          *executing;
  Thread_Control          *owner;

  mutex = _Mutex_recursive_Get( _mutex );
  executing = _Mutex_Queue_acquire( &mutex->Mutex, &lock_context );

  owner = mutex->Mutex.owner;

  if ( __predict_true( owner == NULL ) ) {
    mutex->Mutex.owner = executing;
    ++executing->resource_count;
    _Mutex_Queue_release( &mutex->Mutex, &lock_context );

    return 0;
  } else if ( owner == executing ) {
    ++mutex->nest_level;
    _Mutex_Queue_release( &mutex->Mutex, &lock_context );

    return 0;
  } else {
    Watchdog_Interval ticks;

    switch ( _TOD_Absolute_timeout_to_ticks( abstime, &ticks ) ) {
      case TOD_ABSOLUTE_TIMEOUT_INVALID:
        _Mutex_Queue_release( &mutex->Mutex, &lock_context );
        return EINVAL;
      case TOD_ABSOLUTE_TIMEOUT_IS_IN_PAST:
      case TOD_ABSOLUTE_TIMEOUT_IS_NOW:
        _Mutex_Queue_release( &mutex->Mutex, &lock_context );
        return ETIMEDOUT;
      default:
        break;
    }

    executing->Wait.return_code = 0;
    _Mutex_Acquire_slow(
      &mutex->Mutex,
      owner,
      executing,
      ticks,
      &lock_context
    );

    return (int) executing->Wait.return_code;
  }
}

示例#4

int _Mutex_recursive_Acquire_timed(
  struct _Mutex_recursive_Control *_mutex,
  const struct timespec           *abstime
)
{
  Mutex_recursive_Control *mutex;
  Thread_queue_Context     queue_context;
  ISR_Level                level;
  Thread_Control          *executing;
  Thread_Control          *owner;

  mutex = _Mutex_recursive_Get( _mutex );
  _Thread_queue_Context_initialize( &queue_context );
  _Thread_queue_Context_ISR_disable( &queue_context, level );
  executing = _Mutex_Queue_acquire_critical( &mutex->Mutex, &queue_context );

  owner = mutex->Mutex.Queue.Queue.owner;

  if ( __predict_true( owner == NULL ) ) {
    mutex->Mutex.Queue.Queue.owner = executing;
    _Thread_Resource_count_increment( executing );
    _Mutex_Queue_release( &mutex->Mutex, level, &queue_context );

    return 0;
  } else if ( owner == executing ) {
    ++mutex->nest_level;
    _Mutex_Queue_release( &mutex->Mutex, level, &queue_context );

    return 0;
  } else {
    Watchdog_Interval ticks;

    switch ( _TOD_Absolute_timeout_to_ticks( abstime, CLOCK_REALTIME, &ticks ) ) {
      case TOD_ABSOLUTE_TIMEOUT_INVALID:
        _Mutex_Queue_release( &mutex->Mutex, level, &queue_context );
        return EINVAL;
      case TOD_ABSOLUTE_TIMEOUT_IS_IN_PAST:
      case TOD_ABSOLUTE_TIMEOUT_IS_NOW:
        _Mutex_Queue_release( &mutex->Mutex, level, &queue_context );
        return ETIMEDOUT;
      default:
        break;
    }

    _Thread_queue_Context_set_relative_timeout( &queue_context, ticks );
    _Mutex_Acquire_slow( &mutex->Mutex, owner, executing, level, &queue_context );

    return STATUS_GET_POSIX( _Thread_Wait_get_status( executing ) );
  }
}

示例#5

文件： mutex.c 项目： ketul93/rtems

void _Mutex_Acquire( struct _Mutex_Control *_mutex )
{
  Mutex_Control    *mutex;
  ISR_lock_Context  lock_context;
  Thread_Control   *executing;
  Thread_Control   *owner;

  mutex = _Mutex_Get( _mutex );
  executing = _Mutex_Queue_acquire( mutex, &lock_context );

  owner = mutex->owner;
  ++executing->resource_count;

  if ( __predict_true( owner == NULL ) ) {
    mutex->owner = executing;
    _Mutex_Queue_release( mutex, &lock_context );
  } else {
    _Mutex_Acquire_slow( mutex, owner, executing, 0, &lock_context );
  }
}

示例#6

文件： mutex.c 项目： ketul93/rtems

void _Mutex_recursive_Acquire( struct _Mutex_recursive_Control *_mutex )
{
  Mutex_recursive_Control *mutex;
  ISR_lock_Context         lock_context;
  Thread_Control          *executing;
  Thread_Control          *owner;

  mutex = _Mutex_recursive_Get( _mutex );
  executing = _Mutex_Queue_acquire( &mutex->Mutex, &lock_context );

  owner = mutex->Mutex.owner;

  if ( __predict_true( owner == NULL ) ) {
    mutex->Mutex.owner = executing;
    ++executing->resource_count;
    _Mutex_Queue_release( &mutex->Mutex, &lock_context );
  } else if ( owner == executing ) {
    ++mutex->nest_level;
    _Mutex_Queue_release( &mutex->Mutex, &lock_context );
  } else {
    _Mutex_Acquire_slow( &mutex->Mutex, owner, executing, 0, &lock_context );
  }
}