125 lines
4.2 KiB
C
125 lines
4.2 KiB
C
/*
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* Copyright (c) 1994 by Xerox Corporation. All rights reserved.
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* Copyright (c) 1996 by Silicon Graphics. All rights reserved.
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* Copyright (c) 1998 by Fergus Henderson. All rights reserved.
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* Copyright (c) 2000-2010 by Hewlett-Packard Development Company.
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* All rights reserved.
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*
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* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
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*
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* Permission is hereby granted to use or copy this program
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* for any purpose, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*/
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/* Our pthread support normally needs to intercept a number of thread */
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/* calls. We arrange to do that here, if appropriate. */
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#ifndef GC_PTHREAD_REDIRECTS_H
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#define GC_PTHREAD_REDIRECTS_H
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/* Included from gc.h only. Included only if GC_PTHREADS. */
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#if defined(GC_H) && defined(GC_PTHREADS)
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/* We need to intercept calls to many of the threads primitives, so */
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/* that we can locate thread stacks and stop the world. */
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/* Note also that the collector cannot always see thread specific data. */
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/* Thread specific data should generally consist of pointers to */
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/* uncollectible objects (allocated with GC_malloc_uncollectable, */
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/* not the system malloc), which are deallocated using the destructor */
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/* facility in thr_keycreate. Alternatively, keep a redundant pointer */
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/* to thread specific data on the thread stack. */
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#ifndef GC_PTHREAD_REDIRECTS_ONLY
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# include <pthread.h>
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# ifndef GC_NO_DLOPEN
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# include <dlfcn.h>
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# endif
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# ifndef GC_NO_PTHREAD_SIGMASK
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# include <signal.h> /* needed anyway for proper redirection */
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# endif
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# ifdef __cplusplus
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extern "C" {
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# endif
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# ifndef GC_SUSPEND_THREAD_ID
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# define GC_SUSPEND_THREAD_ID pthread_t
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# endif
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# ifndef GC_NO_DLOPEN
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GC_API void *GC_dlopen(const char * /* path */, int /* mode */);
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# endif /* !GC_NO_DLOPEN */
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# ifndef GC_NO_PTHREAD_SIGMASK
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# if defined(GC_PTHREAD_SIGMASK_NEEDED) \
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|| defined(_BSD_SOURCE) || defined(_GNU_SOURCE) \
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|| (_POSIX_C_SOURCE >= 199506L) || (_XOPEN_SOURCE >= 500)
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GC_API int GC_pthread_sigmask(int /* how */, const sigset_t *,
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sigset_t * /* oset */);
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# endif
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# endif /* !GC_NO_PTHREAD_SIGMASK */
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# ifndef GC_PTHREAD_CREATE_CONST
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/* This is used for pthread_create() only. */
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# define GC_PTHREAD_CREATE_CONST const
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# endif
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GC_API int GC_pthread_create(pthread_t *,
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GC_PTHREAD_CREATE_CONST pthread_attr_t *,
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void *(*)(void *), void * /* arg */);
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GC_API int GC_pthread_join(pthread_t, void ** /* retval */);
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GC_API int GC_pthread_detach(pthread_t);
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# ifndef GC_NO_PTHREAD_CANCEL
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GC_API int GC_pthread_cancel(pthread_t);
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# endif
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# if defined(GC_HAVE_PTHREAD_EXIT) && !defined(GC_PTHREAD_EXIT_DECLARED)
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# define GC_PTHREAD_EXIT_DECLARED
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GC_API void GC_pthread_exit(void *) GC_PTHREAD_EXIT_ATTRIBUTE;
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# endif
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# ifdef __cplusplus
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} /* extern "C" */
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# endif
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#endif /* !GC_PTHREAD_REDIRECTS_ONLY */
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#if !defined(GC_NO_THREAD_REDIRECTS) && !defined(GC_USE_LD_WRAP)
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/* Unless the compiler supports #pragma extern_prefix, the Tru64 */
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/* UNIX <pthread.h> redefines some POSIX thread functions to use */
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/* mangled names. Anyway, it's safe to undef them before redefining. */
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# undef pthread_create
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# undef pthread_join
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# undef pthread_detach
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# define pthread_create GC_pthread_create
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# define pthread_join GC_pthread_join
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# define pthread_detach GC_pthread_detach
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# ifndef GC_NO_PTHREAD_SIGMASK
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# undef pthread_sigmask
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# define pthread_sigmask GC_pthread_sigmask
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# endif
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# ifndef GC_NO_DLOPEN
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# undef dlopen
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# define dlopen GC_dlopen
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# endif
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# ifndef GC_NO_PTHREAD_CANCEL
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# undef pthread_cancel
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# define pthread_cancel GC_pthread_cancel
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# endif
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# ifdef GC_HAVE_PTHREAD_EXIT
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# undef pthread_exit
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# define pthread_exit GC_pthread_exit
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# endif
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#endif /* !GC_NO_THREAD_REDIRECTS */
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#endif /* GC_PTHREADS */
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#endif /* GC_PTHREAD_REDIRECTS_H */
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