gcc/gthr-rtems.h

   1 /* RTEMS threads compatibily routines for libgcc2 and libobjc.
   2    by: Rosimildo da Silva( rdasilva@connecttel.com ) */
   3 /* Compile this one with gcc.  */
   4 /* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 2, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to the Free
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21 02111-1307, USA.  */
  22
  23 /* As a special exception, if you link this library with other files,
  24    some of which are compiled with GCC, to produce an executable,
  25    this library does not by itself cause the resulting executable
  26    to be covered by the GNU General Public License.
  27    This exception does not however invalidate any other reasons why
  28    the executable file might be covered by the GNU General Public License.  */
  29
  30 #ifndef GCC_GTHR_RTEMS_H
  31 #define GCC_GTHR_RTEMS_H
  32
  33
  34 #define __GTHREADS 1
  35
  36 #define __GTHREAD_ONCE_INIT  0
  37 #define __GTHREAD_MUTEX_INIT_FUNCTION  rtems_gxx_mutex_init
  38
  39 /* avoid depedency on rtems specific headers */
  40 typedef void *__gthread_key_t;
  41 typedef int   __gthread_once_t;
  42 typedef void *__gthread_mutex_t;
  43
  44 /*
  45  * External functions provided by RTEMS. They are very similar to their POSIX
  46  * counterparts. A "Wrapper API" is being use to avoid dependency on any RTEMS
  47  * header files.
  48  */
  49
  50 /* generic per task variables */
  51 extern int rtems_gxx_once (__gthread_once_t *once, void (*func) ());
  52 extern int rtems_gxx_key_create (__gthread_key_t *key, void (*dtor) (void *));
  53 extern int rtems_gxx_key_dtor (__gthread_key_t key, void *ptr);
  54 extern int rtems_gxx_key_delete (__gthread_key_t key);
  55 extern void *rtems_gxx_getspecific (__gthread_key_t key);
  56 extern int rtems_gxx_setspecific (__gthread_key_t key, const void *ptr);
  57
  58 /* mutex support */
  59 extern void rtems_gxx_mutex_init (__gthread_mutex_t *mutex);
  60 extern int rtems_gxx_mutex_lock (__gthread_mutex_t *mutex);
  61 extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *mutex);
  62 extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *mutex);
  63
  64
  65 /* RTEMS threading is always active */
  66 static inline int
  67 __gthread_active_p (void)
  68 {
  69   return 1;
  70 }
  71
  72 /* Wrapper calls */
  73 static inline int
  74 __gthread_once (__gthread_once_t *once, void (*func) ())
  75 {
  76    return rtems_gxx_once( once, func );
  77 }
  78
  79 static inline int
  80 __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
  81 {
  82   return rtems_gxx_key_create( key, dtor );
  83 }
  84
  85 static inline int
  86 __gthread_key_dtor (__gthread_key_t key, void *ptr)
  87 {
  88    return rtems_gxx_key_dtor(key, ptr);
  89 }
  90
  91 static inline int
  92 __gthread_key_delete (__gthread_key_t key)
  93 {
  94   return rtems_gxx_key_delete (key);
  95 }
  96
  97 static inline void *
  98 __gthread_getspecific (__gthread_key_t key)
  99 {
 100   return rtems_gxx_getspecific (key);
 101 }
 102
 103 static inline int
 104 __gthread_setspecific (__gthread_key_t key, const void *ptr)
 105 {
 106   return rtems_gxx_setspecific (key, ptr);
 107 }
 108
 109 static inline int
 110 __gthread_mutex_lock (__gthread_mutex_t *mutex)
 111 {
 112     return rtems_gxx_mutex_lock (mutex);
 113 }
 114
 115 static inline int
 116 __gthread_mutex_trylock (__gthread_mutex_t *mutex)
 117 {
 118     return rtems_gxx_mutex_trylock (mutex);
 119 }
 120
 121 static inline int
 122 __gthread_mutex_unlock (__gthread_mutex_t *mutex)
 123 {
 124     return rtems_gxx_mutex_unlock( mutex );
 125 }
 126
 127 #endif /* ! GCC_GTHR_RTEMS_H */