Mercurial > hg > CbC > CbC_gcc
diff gcc/gthr-lynx.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/gthr-lynx.h Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,61 @@ +/* Threads compatibility routines for libgcc2 and libobjc for + LynxOS. */ +/* Compile this one with gcc. */ +/* Copyright (C) 2004, 2008, 2009 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_LYNX_H +#define GCC_GTHR_LYNX_H + +#ifdef _MULTITHREADED + +/* Using the macro version of pthread_setspecific leads to a + compilation error. Instead we have two choices either kill all + macros in pthread.h with defining _POSIX_THREADS_CALLS or undefine + individual macros where we should fall back on the function + implementation. We choose the second approach. */ + +#include <pthread.h> +#undef pthread_setspecific + +/* When using static libc on LynxOS, we cannot define pthread_create + weak. If the multi-threaded application includes iostream.h, + gthr-posix.h is included and pthread_create will be defined weak. + If pthread_create is weak its defining module in libc is not + necessarily included in the link and the symbol is resolved to zero. + Therefore the first call to it will crash. + + Since -mthreads is a multilib switch on LynxOS we know that at this + point we are compiling for multi-threaded. Omitting the weak + definitions at this point should have no effect. */ + +#undef GTHREAD_USE_WEAK +#define GTHREAD_USE_WEAK 0 + +#include "gthr-posix.h" + +#else +#include "gthr-single.h" +#endif + +#endif /* GCC_GTHR_LYNX_H */