Mercurial > hg > CbC > CbC_gcc
comparison 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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1 /* Threads compatibility routines for libgcc2 and libobjc for | |
2 LynxOS. */ | |
3 /* Compile this one with gcc. */ | |
4 /* Copyright (C) 2004, 2008, 2009 Free Software Foundation, Inc. | |
5 | |
6 This file is part of GCC. | |
7 | |
8 GCC is free software; you can redistribute it and/or modify it under | |
9 the terms of the GNU General Public License as published by the Free | |
10 Software Foundation; either version 3, or (at your option) any later | |
11 version. | |
12 | |
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 Under Section 7 of GPL version 3, you are granted additional | |
19 permissions described in the GCC Runtime Library Exception, version | |
20 3.1, as published by the Free Software Foundation. | |
21 | |
22 You should have received a copy of the GNU General Public License and | |
23 a copy of the GCC Runtime Library Exception along with this program; | |
24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
25 <http://www.gnu.org/licenses/>. */ | |
26 | |
27 #ifndef GCC_GTHR_LYNX_H | |
28 #define GCC_GTHR_LYNX_H | |
29 | |
30 #ifdef _MULTITHREADED | |
31 | |
32 /* Using the macro version of pthread_setspecific leads to a | |
33 compilation error. Instead we have two choices either kill all | |
34 macros in pthread.h with defining _POSIX_THREADS_CALLS or undefine | |
35 individual macros where we should fall back on the function | |
36 implementation. We choose the second approach. */ | |
37 | |
38 #include <pthread.h> | |
39 #undef pthread_setspecific | |
40 | |
41 /* When using static libc on LynxOS, we cannot define pthread_create | |
42 weak. If the multi-threaded application includes iostream.h, | |
43 gthr-posix.h is included and pthread_create will be defined weak. | |
44 If pthread_create is weak its defining module in libc is not | |
45 necessarily included in the link and the symbol is resolved to zero. | |
46 Therefore the first call to it will crash. | |
47 | |
48 Since -mthreads is a multilib switch on LynxOS we know that at this | |
49 point we are compiling for multi-threaded. Omitting the weak | |
50 definitions at this point should have no effect. */ | |
51 | |
52 #undef GTHREAD_USE_WEAK | |
53 #define GTHREAD_USE_WEAK 0 | |
54 | |
55 #include "gthr-posix.h" | |
56 | |
57 #else | |
58 #include "gthr-single.h" | |
59 #endif | |
60 | |
61 #endif /* GCC_GTHR_LYNX_H */ |