source: trunk/include/sh_pthread.h@ 135

#ifndef SH_PTHREAD_H
#define SH_PTHREAD_H

#ifdef HAVE_PTHREAD

#include <pthread.h>
#define SH_MUTEX(M)                             pthread_mutex_t M
#define SH_MUTEX_INIT(M,I)                      pthread_mutex_t M = I
#define SH_MUTEX_STATIC(M,I)                    static pthread_mutex_t M = I
#define SH_MUTEX_EXTERN(M)                      extern pthread_mutex_t M

#define SH_MUTEX_LOCK(M)                                                   \
        do {                                                               \
                int oldtype;                                               \
                pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &oldtype);  \
                pthread_cleanup_push(pthread_mutex_unlock, (void *) &(M)); \
                pthread_mutex_lock(&(M))


#define SH_MUTEX_UNLOCK(M,C)                                               \
                pthread_cleanup_pop(1);                                    \
                pthread_setcanceltype(oldtype, NULL);                      \
        } while (0)

#define SH_MUTEX_LOCK_UNSAFE(M) pthread_mutex_lock(&(M))
#define SH_MUTEX_UNLOCK_UNSAFE(M) pthread_mutex_unlock(&(M))

/* 
 * ----   Global mutexes   ----
 */
SH_MUTEX_EXTERN(mutex_skey);
SH_MUTEX_EXTERN(mutex_resolv);
SH_MUTEX_EXTERN(mutex_pwent);

/*
 * ----   Initialize thread-specific conversion area   ----
 */
extern int sh_g_thread();

#else

#define SH_MUTEX(M)                             void *SH_MUTEX_DUMMY_ ## M
#define SH_MUTEX_INIT(M,I)                      extern void *SH_MUTEX_DUMMY_ ## M
#define SH_MUTEX_STATIC(M,I)                    extern void *SH_MUTEX_DUMMY_ ## M
#define SH_MUTEX_EXTERN(M)                      extern void *SH_MUTEX_DUMMY_ ## M
#define SH_MUTEX_LOCK(M)                        ((void)0)
#define SH_MUTEX_UNLOCK(M)                      ((void)0)
#define SH_MUTEX_LOCK_UNSAFE(M)                 ((void)0)
#define SH_MUTEX_UNLOCK_UNSAFE(M)               ((void)0)

/* #ifdef HAVE_PTHREAD */
#endif

/* #ifndef SH_PTHREAD_H */
#endif