12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061 |
- /* Threads compatibility routines for libgcc2 and libobjc for
- LynxOS. */
- /* Compile this one with gcc. */
- /* Copyright (C) 2004-2022 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 */
|