(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 64 insertions, 0 deletions

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 <jakub@redhat.com>, 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 <errno.h>
+#include <rpc/rpc.h>
+#include "pthread.h"
+#include "internals.h"
+#include "spinlock.h"
+#include "restart.h"
+#include <bits/libc-lock.h>
+
+#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