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 */ 55