intraproc.c

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

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#include "beos/locks.h"

apr_status_t lock_intra_cleanup(void *data)
{
    apr_lock_t *lock = (apr_lock_t *)data;
    if (lock->ben_intraproc != 0) {
    	while (atomic_add(&lock->ben_intraproc , -1) > 1){
            release_sem (lock->sem_intraproc);
    	}
    }
    delete_sem(lock->sem_intraproc);
    return APR_SUCCESS;
}    

apr_status_t create_intra_lock(apr_lock_t *new)
{
    int32 stat;    
    
    if ((stat = create_sem(0, "apr_intraproc")) < B_NO_ERROR){
    	lock_intra_cleanup(new);
        return stat;
    }
    new->ben_intraproc = 0;
    new->sem_intraproc = stat;
    apr_pool_cleanup_register(new->cntxt, (void *)new, lock_intra_cleanup,
                        apr_pool_cleanup_null);
    return APR_SUCCESS;
}

apr_status_t lock_intra(apr_lock_t *lock)
{
    int32 stat;
    
    if (atomic_add (&lock->ben_intraproc, 1) > 0){
        if ((stat = acquire_sem(lock->sem_intraproc)) < B_NO_ERROR){
            atomic_add(&lock->ben_intraproc,-1);
	        return stat;
        }
    }
    return APR_SUCCESS;
}

apr_status_t unlock_intra(apr_lock_t *lock)
{
    int32 stat;
    
    if (atomic_add(&lock->ben_intraproc, -1) > 1){
        if ((stat = release_sem(lock->sem_intraproc)) < B_NO_ERROR) {
            atomic_add(&lock->ben_intraproc, 1);
            return stat;
        }
    }
    return APR_SUCCESS;
}

apr_status_t 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;
}