/* Linuxthreads - a simple clone()-based implementation of Posix */ /* threads for Linux. */ /* Copyright (C) 1998 Xavier Leroy (Xavier.Leroy@inria.fr) */ /* */ /* This program is free software; you can redistribute it and/or */ /* modify it under the terms of the GNU Library General Public License */ /* as published by the Free Software Foundation; either version 2 */ /* of the License, or (at your option) any later version. */ /* */ /* This program 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 Library General Public License for more details. */ /* Redefine siglongjmp and longjmp so that they interact correctly with cleanup handlers */ #include <setjmp.h> #include "pthread.h" #include "internals.h" /* These functions are not declared anywhere since they shouldn't be used at another place but here. */ extern __typeof(siglongjmp) __libc_siglongjmp attribute_noreturn; extern __typeof(longjmp) __libc_longjmp attribute_noreturn; static void pthread_cleanup_upto(__jmp_buf target) { pthread_descr self = thread_self(); struct _pthread_cleanup_buffer * c; for (c = THREAD_GETMEM(self, p_cleanup); c != NULL && _JMPBUF_UNWINDS(target, c); c = c->__prev) c->__routine(c->__arg); THREAD_SETMEM(self, p_cleanup, c); if (THREAD_GETMEM(self, p_in_sighandler) && _JMPBUF_UNWINDS(target, THREAD_GETMEM(self, p_in_sighandler))) THREAD_SETMEM(self, p_in_sighandler, NULL); } void attribute_noreturn siglongjmp(sigjmp_buf env, int val) { pthread_cleanup_upto(env->__jmpbuf); __libc_siglongjmp(env, val); } void attribute_noreturn longjmp(jmp_buf env, int val) { pthread_cleanup_upto(env->__jmpbuf); __libc_longjmp(env, val); }