ConditionVariable Class Reference

#include <thread.h>

Public Member Functions
	ConditionVariable (Lock *lock_init)
	~ConditionVariable ()
void	wait ()
void	signal ()
void	broadcast ()

Private Member Functions
	ConditionVariable ()

Private Attributes
pthread_cond_t	condition
Lock *	lock
int	waiting

Friends
class	Lock
class	Semaphore

Detailed Description

Definition at line 73 of file thread.h.

Constructor & Destructor Documentation

ConditionVariable() [1/2]

ConditionVariable::ConditionVariable ( )

inlineprivate

Definition at line 80 of file thread.h.

{ }

ConditionVariable() [2/2]

ConditionVariable::ConditionVariable ( Lock *  lock_init )

inline

Definition at line 82 of file thread.h.

                                     : waiting(0), lock(lock_init) {
    pthread_cond_init(&condition, NULL);
  }

~ConditionVariable()

ConditionVariable::~ConditionVariable ( )

inline

Definition at line 85 of file thread.h.

                       {
    pthread_cond_destroy(&condition);
  }

Member Function Documentation

broadcast()

void ConditionVariable::broadcast ( )

inline

Definition at line 103 of file thread.h.

                   {
    if (!lock->is_locked())
      ThreadError("signaled condition without locked mutex");
    if (waiting)
      pthread_cond_broadcast(&condition);
  }

signal()

void ConditionVariable::signal ( )

inline

Definition at line 97 of file thread.h.

                {
    if (!lock->is_locked())
      ThreadError("signaled condition without locked mutex");
    if (waiting)
      pthread_cond_signal(&condition);
  }

wait()

void ConditionVariable::wait ( )

inline

Definition at line 88 of file thread.h.

              {
    if (!lock->is_locked())
      ThreadError("waited on condition without locked mutex");
    waiting++;
    int l = lock->break_lock();
    pthread_cond_wait(&condition, &lock->mutex);
    waiting--;
    lock->resume_lock(l);
  }

Friends And Related Symbol Documentation

Lock

friend class Lock

friend

Definition at line 74 of file thread.h.

Semaphore

friend class Semaphore

friend

Definition at line 79 of file thread.h.

Field Documentation

condition

pthread_cond_t ConditionVariable::condition

private

Definition at line 76 of file thread.h.

lock

Lock* ConditionVariable::lock

private

Definition at line 77 of file thread.h.

waiting

int ConditionVariable::waiting

private

Definition at line 78 of file thread.h.

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

• Singular/dyn_modules/systhreads/thread.h