libgc/include/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_SOLARIS_THREADS)
   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 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 # include <thread.h>
  18   int GC_thr_create(void *stack_base, size_t stack_size,
  19                     void *(*start_routine)(void *), void *arg, long flags,
  20                     thread_t *new_thread);
  21   int GC_thr_join(thread_t wait_for, thread_t *departed, void **status);
  22   int GC_thr_suspend(thread_t target_thread);
  23   int GC_thr_continue(thread_t target_thread);
  24   void * GC_dlopen(const char *path, int mode);
  25 # define thr_create GC_thr_create
  26 # define thr_join GC_thr_join
  27 # define thr_suspend GC_thr_suspend
  28 # define thr_continue GC_thr_continue
  29 #endif /* GC_SOLARIS_THREADS */
  30
  31 #if defined(GC_SOLARIS_PTHREADS)
  32 # include <pthread.h>
  33 # include <signal.h>
  34   extern int GC_pthread_create(pthread_t *new_thread,
  35                                  const pthread_attr_t *attr,
  36                                  void * (*thread_execp)(void *), void *arg);
  37   extern int GC_pthread_join(pthread_t wait_for, void **status);
  38   extern int GC_pthread_detach(pthread_t thread);
  39 # define pthread_join GC_pthread_join
  40 # define pthread_create GC_pthread_create
  41 # define pthread_detach GC_pthread_detach
  42 #endif
  43
  44 #if defined(GC_SOLARIS_PTHREADS) || defined(GC_SOLARIS_THREADS)
  45 # define dlopen GC_dlopen
  46 #endif /* SOLARIS_THREADS || SOLARIS_PTHREADS */
  47
  48
  49 #if !defined(GC_USE_LD_WRAP) && (defined(GC_PTHREADS) || defined(GC_DARWIN_THREADS) || defined(GC_MACOSX_THREADS)) && !defined(GC_SOLARIS_PTHREADS)
  50 /* We treat these similarly. */
  51 # include <pthread.h>
  52 # include <signal.h>
  53
  54   int GC_pthread_create(pthread_t *new_thread,
  55                         const pthread_attr_t *attr,
  56                         void *(*start_routine)(void *), void *arg);
  57 #ifndef GC_DARWIN_THREADS
  58   int GC_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset);
  59 #endif
  60   int GC_pthread_join(pthread_t thread, void **retval);
  61   int GC_pthread_detach(pthread_t thread);
  62
  63 #if defined(GC_OSF1_THREADS) \
  64     && defined(_PTHREAD_USE_MANGLED_NAMES_) && !defined(_PTHREAD_USE_PTDNAM_)
  65 /* Unless the compiler supports #pragma extern_prefix, the Tru64 UNIX
  66    <pthread.h> redefines some POSIX thread functions to use mangled names.
  67    If so, undef them before redefining. */
  68 # undef pthread_create
  69 # undef pthread_join
  70 # undef pthread_detach
  71 #endif
  72
  73 # define pthread_create GC_pthread_create
  74 # define pthread_join GC_pthread_join
  75 # define pthread_detach GC_pthread_detach
  76
  77 #ifndef GC_DARWIN_THREADS
  78 # ifdef GC_NETBSD_THREADS
  79 #  undef pthread_sigmask
  80 # endif
  81 # define pthread_sigmask GC_pthread_sigmask
  82 # define dlopen GC_dlopen
  83 #endif
  84
  85 #endif /* GC_xxxxx_THREADS */
  86
  87 #endif /* GC_PTHREAD_REDIRECTS_H */