From 82f81a9086320d12eb2fc45766203954b90461a2 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 18 Dec 2002 01:38:17 +0000 Subject: Update. * sysdeps/unix/sysv/linux/alpha/syscalls.list (msgrcv, msgsnd): Make cancelable. * sysdeps/unix/sysv/linux/hppa/syscalls.list (msgrcv, msgsnd): Likewise. * sysdeps/unix/sysv/linux/ia64/syscalls.list (msgrcv, msgsnd): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (msgrcv, msgsnd): Likewise. * sysdeps/unix/sysv/linux/x86_64/syscalls.list (msgrcv, msgsnd): Likewise. * sysdeps/unix/sysv/linux/ia64/sigsuspend.c (__sigsuspend): Likewise. --- linuxthreads/libc-cancellation.c | 75 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 linuxthreads/libc-cancellation.c (limited to 'linuxthreads/libc-cancellation.c') diff --git a/linuxthreads/libc-cancellation.c b/linuxthreads/libc-cancellation.c new file mode 100644 index 0000000000..4d38d4222d --- /dev/null +++ b/linuxthreads/libc-cancellation.c @@ -0,0 +1,75 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include "pthread.h" +#include "internals.h" +#include "spinlock.h" +#include "restart.h" +#include + +#if !defined NOT_IN_libc + +# ifndef SHARED +weak_extern (__pthread_do_exit) +weak_extern (__pthread_thread_self) +# endif + +int __libc_multiple_threads attribute_hidden; + +/* The next two functions are similar to pthread_setcanceltype() but + more specialized for the use in the cancelable functions like write(). + They do not need to check parameters etc. */ +int +attribute_hidden +__libc_enable_asynccancel (void) +{ +#ifdef FLOATING_STACKS + pthread_descr self = thread_self(); +#else + pthread_descr self = __libc_maybe_call2 (pthread_thread_self, (), NULL); + + if (self == NULL) + return PTHREAD_CANCEL_DEFERRED; +#endif + int oldtype = THREAD_GETMEM(self, p_canceltype); + THREAD_SETMEM(self, p_canceltype, PTHREAD_CANCEL_ASYNCHRONOUS); + if (__builtin_expect (THREAD_GETMEM(self, p_canceled), 0) && + THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE) + __libc_maybe_call2 (pthread_do_exit, + (PTHREAD_CANCELED, CURRENT_STACK_FRAME), 0); + return oldtype; +} + +void +internal_function attribute_hidden +__libc_disable_asynccancel (int oldtype) +{ +#ifdef FLOATING_STACKS + pthread_descr self = thread_self(); +#else + pthread_descr self = __libc_maybe_call2 (pthread_thread_self, (), NULL); + + if (self != NULL) +#endif + THREAD_SETMEM(self, p_canceltype, oldtype); +} + +#endif -- cgit v1.2.3