From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 22 Dec 2004 20:10:10 +0000 Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. --- linuxthreads/libc-cancellation.c | 64 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 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..c28920feb3 --- /dev/null +++ b/linuxthreads/libc-cancellation.c @@ -0,0 +1,64 @@ +/* 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) +# endif + +int __libc_multiple_threads attribute_hidden __attribute__((nocommon)); +strong_alias (__libc_multiple_threads, __librt_multiple_threads); + +/* 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) +{ + pthread_descr self = thread_self(); + int oldtype = LIBC_THREAD_GETMEM(self, p_canceltype); + LIBC_THREAD_SETMEM(self, p_canceltype, PTHREAD_CANCEL_ASYNCHRONOUS); + if (__builtin_expect (LIBC_THREAD_GETMEM(self, p_canceled), 0) && + LIBC_THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE) + __libc_maybe_call2 (pthread_do_exit, + (PTHREAD_CANCELED, CURRENT_STACK_FRAME), 0); + return oldtype; +} +strong_alias (__libc_enable_asynccancel, __librt_enable_asynccancel) + +void +internal_function attribute_hidden +__libc_disable_asynccancel (int oldtype) +{ + pthread_descr self = thread_self(); + LIBC_THREAD_SETMEM(self, p_canceltype, oldtype); +} +strong_alias (__libc_disable_asynccancel, __librt_disable_asynccancel) + +#endif -- cgit 1.4.1