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/*
* Copyright (c) 1994 by Xerox Corporation. All rights reserved.
* Copyright (c) 1996 by Silicon Graphics. All rights reserved.
* Copyright (c) 1998 by Fergus Henderson. All rights reserved.
* Copyright (c) 2000-2010 by Hewlett-Packard Development Company.
* All rights reserved.
*
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
*
* Permission is hereby granted to use or copy this program
* for any purpose, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*/
/* 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
/* Included from gc.h only. Included only if GC_PTHREADS. */
#if defined(GC_H) && defined(GC_PTHREADS)
/* 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 always see thread specific data. */
/* Thread specific data should generally consist of pointers to */
/* uncollectible 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. */
#ifndef GC_PTHREAD_REDIRECTS_ONLY
# include <pthread.h>
# ifndef GC_NO_DLOPEN
# include <dlfcn.h>
# endif
# ifndef GC_NO_PTHREAD_SIGMASK
# include <signal.h> /* needed anyway for proper redirection */
# endif
# ifdef __cplusplus
extern "C" {
# endif
# ifndef GC_SUSPEND_THREAD_ID
# define GC_SUSPEND_THREAD_ID pthread_t
# endif
# ifndef GC_NO_DLOPEN
GC_API void *GC_dlopen(const char * /* path */, int /* mode */);
# endif /* !GC_NO_DLOPEN */
# ifndef GC_NO_PTHREAD_SIGMASK
# if defined(GC_PTHREAD_SIGMASK_NEEDED) \
|| defined(_BSD_SOURCE) || defined(_GNU_SOURCE) \
|| (_POSIX_C_SOURCE >= 199506L) || (_XOPEN_SOURCE >= 500)
GC_API int GC_pthread_sigmask(int /* how */, const sigset_t *,
sigset_t * /* oset */);
# endif
# endif /* !GC_NO_PTHREAD_SIGMASK */
# ifndef GC_PTHREAD_CREATE_CONST
/* This is used for pthread_create() only. */
# define GC_PTHREAD_CREATE_CONST const
# endif
GC_API int GC_pthread_create(pthread_t *,
GC_PTHREAD_CREATE_CONST pthread_attr_t *,
void *(*)(void *), void * /* arg */);
GC_API int GC_pthread_join(pthread_t, void ** /* retval */);
GC_API int GC_pthread_detach(pthread_t);
# ifndef GC_NO_PTHREAD_CANCEL
GC_API int GC_pthread_cancel(pthread_t);
# endif
# if defined(GC_HAVE_PTHREAD_EXIT) && !defined(GC_PTHREAD_EXIT_DECLARED)
# define GC_PTHREAD_EXIT_DECLARED
GC_API void GC_pthread_exit(void *) GC_PTHREAD_EXIT_ATTRIBUTE;
# endif
# ifdef __cplusplus
} /* extern "C" */
# endif
#endif /* !GC_PTHREAD_REDIRECTS_ONLY */
#if !defined(GC_NO_THREAD_REDIRECTS) && !defined(GC_USE_LD_WRAP)
/* Unless the compiler supports #pragma extern_prefix, the Tru64 */
/* UNIX <pthread.h> redefines some POSIX thread functions to use */
/* mangled names. Anyway, it's safe to undef them before redefining. */
# undef pthread_create
# undef pthread_join
# undef pthread_detach
# define pthread_create GC_pthread_create
# define pthread_join GC_pthread_join
# define pthread_detach GC_pthread_detach
# ifndef GC_NO_PTHREAD_SIGMASK
# undef pthread_sigmask
# define pthread_sigmask GC_pthread_sigmask
# endif
# ifndef GC_NO_DLOPEN
# undef dlopen
# define dlopen GC_dlopen
# endif
# ifndef GC_NO_PTHREAD_CANCEL
# undef pthread_cancel
# define pthread_cancel GC_pthread_cancel
# endif
# ifdef GC_HAVE_PTHREAD_EXIT
# undef pthread_exit
# define pthread_exit GC_pthread_exit
# endif
#endif /* !GC_NO_THREAD_REDIRECTS */
#endif /* GC_PTHREADS */
#endif /* GC_PTHREAD_REDIRECTS_H */
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