| /* 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, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, 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 */ |