1/* Threads compatibility routines for libgcc2 and libobjc for 2 LynxOS. */ 3/* Compile this one with gcc. */ 4/* Copyright (C) 2004 Free Software Foundation, Inc. 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify it under 9the terms of the GNU General Public License as published by the Free 10Software Foundation; either version 2, or (at your option) any later 11version. 12 13GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14WARRANTY; without even the implied warranty of MERCHANTABILITY or 15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16for more details. 17 18You should have received a copy of the GNU General Public License 19along with GCC; see the file COPYING. If not, write to the Free 20Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 2102110-1301, 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_LYNX_H 31#define GCC_GTHR_LYNX_H 32 33#ifdef _MULTITHREADED 34 35/* Using the macro version of pthread_setspecific leads to a 36 compilation error. Instead we have two choices either kill all 37 macros in pthread.h with defining _POSIX_THREADS_CALLS or undefine 38 individual macros where we should fall back on the function 39 implementation. We choose the second approach. */ 40 41#include <pthread.h> 42#undef pthread_setspecific 43 44/* When using static libc on LynxOS, we cannot define pthread_create 45 weak. If the multi-threaded application includes iostream.h, 46 gthr-posix.h is included and pthread_create will be defined weak. 47 If pthead_create is weak its defining module in libc is not 48 necessarily included in the link and the symbol is resolved to zero. 49 Therefore the first call to it will crash. 50 51 Since -mthreads is a multilib switch on LynxOS we know that at this 52 point we are compiling for multi-threaded. Omitting the weak 53 definitions at this point should have no effect. */ 54 55#undef GTHREAD_USE_WEAK 56#define GTHREAD_USE_WEAK 0 57 58#include "gthr-posix.h" 59 60#else 61#include "gthr-single.h" 62#endif 63 64#endif /* GCC_GTHR_LYNX_H */ 65