rename current stable linuxthreads to linuxthreads.old to prepare for import of latest glibc version

1 files changed, 55 insertions, 0 deletions

diff --git a/libpthread/linuxthreads.old/ptlongjmp.c b/libpthread/linuxthreads.old/ptlongjmp.c
new file mode 100644
index 000000000..c0ea8223a
--- /dev/null
+++ b/libpthread/linuxthreads.old/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 <setjmp.h>
+#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);
+}