/* Our pthread support normally needs to intercept a number of thread	*/
/* calls.  We arrange to do that here, if appropriate.			*/

#ifndef GC_PTHREAD_REDIRECTS_H

#define GC_PTHREAD_REDIRECTS_H

#if defined(GC_SOLARIS_THREADS)
/* We need to intercept calls to many of the threads primitives, so 	*/
/* that we can locate thread stacks and stop the world.			*/
/* Note also that the collector cannot see thread specific data.	*/
/* Thread specific data should generally consist of pointers to		*/
/* uncollectable objects (allocated with GC_malloc_uncollectable,	*/
/* not the system malloc), which are deallocated using the destructor	*/
/* facility in thr_keycreate.  Alternatively, keep a redundant pointer	*/
/* to thread specific data on the thread stack.			        */
# include <thread.h>
  int GC_thr_create(void *stack_base, size_t stack_size,
                    void *(*start_routine)(void *), void *arg, long flags,
                    thread_t *new_thread);
  int GC_thr_join(thread_t wait_for, thread_t *departed, void **status);
  int GC_thr_suspend(thread_t target_thread);
  int GC_thr_continue(thread_t target_thread);
  void * GC_dlopen(const char *path, int mode);
# define thr_create GC_thr_create
# define thr_join GC_thr_join
# define thr_suspend GC_thr_suspend
# define thr_continue GC_thr_continue
#endif /* GC_SOLARIS_THREADS */

#if defined(GC_SOLARIS_PTHREADS)
# include <pthread.h>
# include <signal.h>
  extern int GC_pthread_create(pthread_t *new_thread,
    			         const pthread_attr_t *attr,
          			 void * (*thread_execp)(void *), void *arg);
  extern int GC_pthread_join(pthread_t wait_for, void **status);
# define pthread_join GC_pthread_join
# define pthread_create GC_pthread_create
#endif

#if defined(GC_SOLARIS_PTHREADS) || defined(GC_SOLARIS_THREADS)
# define dlopen GC_dlopen
#endif /* SOLARIS_THREADS || SOLARIS_PTHREADS */


#if !defined(GC_USE_LD_WRAP) && defined(GC_PTHREADS) && !defined(GC_SOLARIS_PTHREADS)
/* We treat these similarly. */
# include <pthread.h>
# include <signal.h>

  int GC_pthread_create(pthread_t *new_thread,
                        const pthread_attr_t *attr,
		        void *(*start_routine)(void *), void *arg);
#ifndef GC_DARWIN_THREADS
  int GC_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset);
#endif
  int GC_pthread_join(pthread_t thread, void **retval);
  int GC_pthread_detach(pthread_t thread);

#if defined(GC_OSF1_THREADS) \
    && defined(_PTHREAD_USE_MANGLED_NAMES_) && !defined(_PTHREAD_USE_PTDNAM_)
/* Unless the compiler supports #pragma extern_prefix, the Tru64 UNIX
   <pthread.h> redefines some POSIX thread functions to use mangled names.
   If so, undef them before redefining. */
# undef pthread_create
# undef pthread_join
# undef pthread_detach
#endif

#ifndef GC_PTHREAD_SYM_VERSION
# define pthread_create GC_pthread_create
#endif
# define pthread_join GC_pthread_join
# define pthread_detach GC_pthread_detach

#ifndef GC_DARWIN_THREADS
# define pthread_sigmask GC_pthread_sigmask
# define dlopen GC_dlopen
#endif

#endif /* GC_xxxxx_THREADS */

#endif /* GC_PTHREAD_REDIRECTS_H */
