From e356ea321c8098cf1a83a67e27d64c44de08a298 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Wed, 20 Feb 2002 09:18:50 +0000 Subject: Merge in the pthread library. This is the linuxthreads library taken from glibc 2.1.3 and ported to work with uClibc by Stefan Soucek and Erik Andersen (me). Stefan has hacked things up such that linuxthreads runs on MMU-less systems (tested only on arm-nommu). Erik cleaned things up and made it work properly as a shared library. -Erik --- libpthread/linuxthreads/ptlongjmp.c | 55 +++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 libpthread/linuxthreads/ptlongjmp.c (limited to 'libpthread/linuxthreads/ptlongjmp.c') diff --git a/libpthread/linuxthreads/ptlongjmp.c b/libpthread/linuxthreads/ptlongjmp.c new file mode 100644 index 000000000..c0ea8223a --- /dev/null +++ b/libpthread/linuxthreads/ptlongjmp.c @@ -0,0 +1,55 @@ +/* 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 +#include "pthread.h" +#include "internals.h" + +/* These functions are not declared anywhere since they shouldn't be + used at another place but here. */ +extern void __libc_siglongjmp (sigjmp_buf env, int val) + __attribute__ ((noreturn)); +extern void __libc_longjmp (sigjmp_buf env, int val) + __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 siglongjmp(sigjmp_buf env, int val) +{ + pthread_cleanup_upto(env->__jmpbuf); + __libc_siglongjmp(env, val); +} + +void longjmp(jmp_buf env, int val) +{ + pthread_cleanup_upto(env->__jmpbuf); + __libc_siglongjmp(env, val); +} -- cgit v1.2.3