ACE_sema_t Class Reference

This is used to implement semaphores for platforms that support POSIX pthreads, but do *not* support POSIX semaphores, i.e., it's a different type than the POSIX <sem_t>. More...

#include <os_pthread.h>

List of all members.

Public Attributes
ACE_mutex_t	lock_
	Serialize access to internal state.
ACE_cond_t	count_nonzero_
	Block until there are no waiters.
u_long	count_
	Count of the semaphore.
u_long	waiters_
	Number of threads that have called <ACE_OS::sema_wait>.
sem_t *	sema_
char *	name_
bool	new_sema_

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Detailed Description

This is used to implement semaphores for platforms that support POSIX pthreads, but do *not* support POSIX semaphores, i.e., it's a different type than the POSIX <sem_t>.

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Member Data Documentation

u_long ACE_sema_t::count_

Count of the semaphore.

ACE_cond_t ACE_sema_t::count_nonzero_

Block until there are no waiters.

ACE_mutex_t ACE_sema_t::lock_

Serialize access to internal state.

char* ACE_sema_t::name_

Name of the semaphore (if this is non-NULL then this is a named POSIX semaphore, else its an unnamed POSIX semaphore).

bool ACE_sema_t::new_sema_

this->sema_ doesn't always get created dynamically if a platform doesn't support named posix semaphores. We use this flag to remember if we need to delete <sema_> or not.

sem_t* ACE_sema_t::sema_

Pointer to semaphore handle. This is allocated by ACE if we are working with an unnamed POSIX semaphore or by the OS if we are working with a named POSIX semaphore.

u_long ACE_sema_t::waiters_

Number of threads that have called <ACE_OS::sema_wait>.

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

• os_pthread.h
• os_semaphore.h