thread-utils.h

   1 #ifndef THREAD_COMPAT_H
   2 #define THREAD_COMPAT_H
   3
   4 #ifndef NO_PTHREADS
   5 #include <pthread.h>
   6
   7 #define HAVE_THREADS 1
   8
   9 #else
  10
  11 #define HAVE_THREADS 0
  12
  13 /*
  14  * macros instead of typedefs because pthread definitions may have
  15  * been pulled in by some system dependencies even though the user
  16  * wants to disable pthread.
  17  */
  18 #define pthread_t int
  19 #define pthread_mutex_t int
  20 #define pthread_cond_t int
  21 #define pthread_key_t int
  22
  23 #define pthread_mutex_init(mutex, attr) dummy_pthread_init(mutex)
  24 #define pthread_mutex_lock(mutex)
  25 #define pthread_mutex_unlock(mutex)
  26 #define pthread_mutex_destroy(mutex)
  27
  28 #define pthread_cond_init(cond, attr) dummy_pthread_init(cond)
  29 #define pthread_cond_wait(cond, mutex)
  30 #define pthread_cond_signal(cond)
  31 #define pthread_cond_broadcast(cond)
  32 #define pthread_cond_destroy(cond)
  33
  34 #define pthread_key_create(key, attr) dummy_pthread_init(key)
  35 #define pthread_key_delete(key)
  36
  37 #define pthread_create(thread, attr, fn, data) \
  38         dummy_pthread_create(thread, attr, fn, data)
  39 #define pthread_join(thread, retval) \
  40         dummy_pthread_join(thread, retval)
  41
  42 #define pthread_setspecific(key, data)
  43 #define pthread_getspecific(key) NULL
  44
  45 int dummy_pthread_create(pthread_t *pthread, const void *attr,
  46                          void *(*fn)(void *), void *data);
  47 int dummy_pthread_join(pthread_t pthread, void **retval);
  48
  49 int dummy_pthread_init(void *);
  50
  51 #endif
  52
  53 int online_cpus(void);
  54 int init_recursive_mutex(pthread_mutex_t*);
  55
  56
  57 #endif /* THREAD_COMPAT_H */