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- /* 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 */
- #define NO_PTR_DEMANGLE
- #include <setjmp.h>
- #include "pthread.h"
- #include "internals.h"
- #ifndef NO_PTR_DEMANGLE
- #include <jmpbuf-unwind.h>
- #define __JMPBUF_UNWINDS(a,b,c) _JMPBUF_UNWINDS(a,b,c)
- #else
- #define __JMPBUF_UNWINDS(a,b,c) _JMPBUF_UNWINDS(a,b)
- #endif
- #ifndef NO_PTR_DEMANGLE
- static inline uintptr_t
- demangle_ptr (uintptr_t x)
- {
- #ifdef PTR_DEMANGLE
- PTR_DEMANGLE (x);
- #endif
- return x;
- }
- #else
- #define demangle_ptr(x) x
- #endif
- void __pthread_cleanup_upto (__jmp_buf target, char *targetframe)
- {
- pthread_descr self = thread_self();
- struct _pthread_cleanup_buffer * c;
- for (c = THREAD_GETMEM(self, p_cleanup);
- c != NULL && __JMPBUF_UNWINDS(target, c, demangle_ptr);
- c = c->__prev)
- {
- #if _STACK_GROWS_DOWN
- if ((char *) c <= targetframe)
- {
- c = NULL;
- break;
- }
- #elif _STACK_GROWS_UP
- if ((char *) c >= targetframe)
- {
- c = NULL;
- break;
- }
- #else
- # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
- #endif
- 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),
- demangle_ptr))
- THREAD_SETMEM(self, p_in_sighandler, NULL);
- }
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