intraproc.c

Apache V2.0.15 Alpha For Linuxhttpd-2_0_15-alpha.tar.Z

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 */

#include "locks.h"

#if APR_HAS_THREADS

#if (APR_USE_PTHREAD_SERIALIZE)  

static apr_status_t lock_intra_cleanup(void *data)
{
    apr_lock_t *lock = (apr_lock_t *) data;
    apr_status_t stat;

    pthread_mutex_unlock(lock->intraproc);
    stat = pthread_mutex_destroy(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
    if (stat) {
        stat = errno;
    }
#endif
    return stat;
}    

apr_status_t apr_unix_create_intra_lock(apr_lock_t *new)
{
    apr_status_t stat;
    pthread_mutexattr_t mattr;

    new->intraproc = (pthread_mutex_t *)apr_palloc(new->cntxt, 
                              sizeof(pthread_mutex_t));
    if (new->intraproc == NULL ) {
        return errno;
    }
    if ((stat = pthread_mutexattr_init(&mattr))) {
#ifdef PTHREAD_SETS_ERRNO
        stat = errno;
#endif
        lock_intra_cleanup(new);
        return stat;
    }

    if ((stat = pthread_mutex_init(new->intraproc, &mattr))) {
#ifdef PTHREAD_SETS_ERRNO
        stat = errno;
#endif
        lock_intra_cleanup(new);
        return stat;
    }

    if ((stat = pthread_mutexattr_destroy(&mattr))) {
#ifdef PTHREAD_SETS_ERRNO
        stat = errno;
#endif
        lock_intra_cleanup(new);
        return stat;
    }

    new->curr_locked = 0;
    apr_pool_cleanup_register(new->cntxt, (void *)new, lock_intra_cleanup,
                        apr_pool_cleanup_null);
    return APR_SUCCESS;
}

apr_status_t apr_unix_lock_intra(apr_lock_t *lock)
{
    apr_status_t stat;

    stat = pthread_mutex_lock(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
    if (stat) {
        stat = errno;
    }
#endif
    return stat;
}

apr_status_t apr_unix_unlock_intra(apr_lock_t *lock)
{
    apr_status_t status;

    status = pthread_mutex_unlock(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
    if (status) {
        status = errno;
    }
#endif
    return status;
}

apr_status_t apr_unix_destroy_intra_lock(apr_lock_t *lock)
{
    apr_status_t stat;
    if ((stat = lock_intra_cleanup(lock)) == APR_SUCCESS) {
        apr_pool_cleanup_kill(lock->cntxt, lock, lock_intra_cleanup);
        return APR_SUCCESS;
    }
    return stat;
}
#endif
#endif