/libs/headers/gc/gc_pthread_redirects.h

 1/* Our pthread support normally needs to intercept a number of thread	*/
 2/* calls.  We arrange to do that here, if appropriate.			*/
 3
 4#ifndef GC_PTHREAD_REDIRECTS_H
 5
 6#define GC_PTHREAD_REDIRECTS_H
 7
 8#if !defined(GC_USE_LD_WRAP) && defined(GC_PTHREADS)
 9/* We need to intercept calls to many of the threads primitives, so   	 */
10/* that we can locate thread stacks and stop the world.                  */
11/* Note also that the collector cannot always see thread specific data.  */
12/* Thread specific data should generally consist of pointers to          */
13/* uncollectable objects (allocated with GC_malloc_uncollectable,        */
14/* not the system malloc), which are deallocated using the destructor    */
15/* facility in thr_keycreate.  Alternatively, keep a redundant pointer   */
16/* to thread specific data on the thread stack. 			 */
17
18# include <pthread.h>
19# include <signal.h>
20
21  int GC_pthread_create(pthread_t *new_thread,
22                        const pthread_attr_t *attr,
23		        void *(*start_routine)(void *), void *arg);
24#ifndef GC_DARWIN_THREADS
25  int GC_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset);
26#endif
27  int GC_pthread_join(pthread_t thread, void **retval);
28  int GC_pthread_detach(pthread_t thread);
29
30#if defined(GC_OSF1_THREADS) \
31    && defined(_PTHREAD_USE_MANGLED_NAMES_) && !defined(_PTHREAD_USE_PTDNAM_)
32/* Unless the compiler supports #pragma extern_prefix, the Tru64 UNIX
33   <pthread.h> redefines some POSIX thread functions to use mangled names.
34   If so, undef them before redefining. */
35# undef pthread_create
36# undef pthread_join
37# undef pthread_detach
38#endif
39
40# define pthread_create GC_pthread_create
41# define pthread_join GC_pthread_join
42# define pthread_detach GC_pthread_detach
43
44#ifndef GC_DARWIN_THREADS
45# ifdef pthread_sigmask
46#  undef pthread_sigmask
47# endif	 /* pthread_sigmask */
48# define pthread_sigmask GC_pthread_sigmask
49# define dlopen GC_dlopen
50#endif
51
52#endif /* GC_xxxxx_THREADS */
53
54#endif /* GC_PTHREAD_REDIRECTS_H */