1/* Threads compatibility routines for libgcc2. */ 2/* Compile this one with gcc. */ 3/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to the Free 19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 2002110-1301, USA. */ 21 22/* As a special exception, if you link this library with other files, 23 some of which are compiled with GCC, to produce an executable, 24 this library does not by itself cause the resulting executable 25 to be covered by the GNU General Public License. 26 This exception does not however invalidate any other reasons why 27 the executable file might be covered by the GNU General Public License. */ 28 29#include "gthr-gnat.h" 30 31#ifndef HIDE_EXPORTS 32#pragma GCC visibility push(default) 33#endif 34 35#ifdef __cplusplus 36#define UNUSED(x) 37#else 38#define UNUSED(x) x __attribute__((unused)) 39#endif 40 41void __gnat_default_lock (void); 42void __gnat_default_unlock (void); 43 44void 45__gnat_default_lock (void) 46{ 47 return; 48} 49 50void 51__gnat_default_unlock (void) 52{ 53 return; 54} 55 56static void (*__gnat_task_lock) (void) = *__gnat_default_lock; 57static void (*__gnat_task_unlock) (void) = *__gnat_default_unlock; 58 59 void 60__gnat_install_locks (void (*lock) (void), void (*unlock) (void)) 61{ 62 __gnat_task_lock = lock; 63 __gnat_task_unlock = unlock; 64} 65 66int 67__gthread_active_p (void) 68{ 69 return 0; 70} 71 72int 73__gthread_mutex_lock (__gthread_mutex_t * UNUSED (mutex)) 74{ 75 __gnat_task_lock (); 76 return 0; 77} 78 79int 80__gthread_mutex_unlock (__gthread_mutex_t * UNUSED (mutex)) 81{ 82 __gnat_task_unlock (); 83 return 0; 84} 85 86#ifndef HIDE_EXPORTS 87#pragma GCC visibility pop 88#endif 89