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author | Alexander Kabaev <kan@FreeBSD.org> | 2007-05-19 01:19:51 +0000 |
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committer | Alexander Kabaev <kan@FreeBSD.org> | 2007-05-19 01:19:51 +0000 |
commit | 6b834ef156bcf24dcf0e281f57ee5bde03ca07cf (patch) | |
tree | 0cb530c9c38af219e6dda2994c078b6b2b9ad853 /contrib/gcc/gthr-lynx.h | |
parent | 9ba78bf6b1135ae200742b2a97ae5bc71c9fd265 (diff) | |
download | src-6b834ef156bcf24dcf0e281f57ee5bde03ca07cf.tar.gz src-6b834ef156bcf24dcf0e281f57ee5bde03ca07cf.zip |
GCC 4.2.0 release.
Notes
Notes:
svn path=/vendor/gcc/dist/; revision=169689
Diffstat (limited to 'contrib/gcc/gthr-lynx.h')
-rw-r--r-- | contrib/gcc/gthr-lynx.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/contrib/gcc/gthr-lynx.h b/contrib/gcc/gthr-lynx.h new file mode 100644 index 000000000000..8d2d72b9d97d --- /dev/null +++ b/contrib/gcc/gthr-lynx.h @@ -0,0 +1,64 @@ +/* Threads compatibility routines for libgcc2 and libobjc for + LynxOS. */ +/* Compile this one with gcc. */ +/* Copyright (C) 2004 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 2, 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. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ + +/* As a special exception, if you link this library with other files, + some of which are compiled with GCC, to produce an executable, + this library does not by itself cause the resulting executable + to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +#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 pthead_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 */ |