1 /* Linuxthreads - a simple clone()-based implementation of Posix */
2 /* threads for Linux. */
3 /* Copyright (C) 1998 Xavier Leroy (Xavier.Leroy@inria.fr) */
5 /* This program is free software; you can redistribute it and/or */
6 /* modify it under the terms of the GNU Library General Public License */
7 /* as published by the Free Software Foundation; either version 2 */
8 /* of the License, or (at your option) any later version. */
10 /* This program is distributed in the hope that it will be useful, */
11 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
13 /* GNU Library General Public License for more details. */
15 /* Redefine siglongjmp and longjmp so that they interact correctly
16 with cleanup handlers */
20 #include "internals.h"
22 /* These functions are not declared anywhere since they shouldn't be
23 used at another place but here. */
24 extern void __libc_siglongjmp (sigjmp_buf env, int val)
25 __attribute__ ((noreturn));
26 extern void __libc_longjmp (sigjmp_buf env, int val)
27 __attribute__ ((noreturn));
30 static void pthread_cleanup_upto(__jmp_buf target)
32 pthread_descr self = thread_self();
33 struct _pthread_cleanup_buffer * c;
35 for (c = THREAD_GETMEM(self, p_cleanup);
36 c != NULL && _JMPBUF_UNWINDS(target, c);
38 c->__routine(c->__arg);
39 THREAD_SETMEM(self, p_cleanup, c);
40 if (THREAD_GETMEM(self, p_in_sighandler)
41 && _JMPBUF_UNWINDS(target, THREAD_GETMEM(self, p_in_sighandler)))
42 THREAD_SETMEM(self, p_in_sighandler, NULL);
45 void siglongjmp(sigjmp_buf env, int val)
47 pthread_cleanup_upto(env->__jmpbuf);
48 __libc_siglongjmp(env, val);
51 void longjmp(jmp_buf env, int val)
53 pthread_cleanup_upto(env->__jmpbuf);
54 __libc_siglongjmp(env, val);