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authorWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
committerWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
commite1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a (patch)
tree2c8d14e4dcc733f4227f0984ed05da5826b13acd /libpthread/linuxthreads.old/ptlongjmp.c
parent6b6ede3d15f04fe825cfa9f697507457e3640344 (diff)
Revert "resolve merge"
This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
Diffstat (limited to 'libpthread/linuxthreads.old/ptlongjmp.c')
-rw-r--r--libpthread/linuxthreads.old/ptlongjmp.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/libpthread/linuxthreads.old/ptlongjmp.c b/libpthread/linuxthreads.old/ptlongjmp.c
new file mode 100644
index 000000000..5cb708944
--- /dev/null
+++ b/libpthread/linuxthreads.old/ptlongjmp.c
@@ -0,0 +1,67 @@
+/* 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"
+#include <bits/stackinfo.h>
+#include <jmpbuf-unwind.h>
+
+static void pthread_cleanup_upto(__jmp_buf target)
+{
+ pthread_descr self = thread_self();
+ struct _pthread_cleanup_buffer * c;
+ char *currentframe = CURRENT_STACK_FRAME;
+
+ for (c = THREAD_GETMEM(self, p_cleanup);
+ c != NULL && _JMPBUF_UNWINDS(target, c);
+ c = c->__prev)
+ {
+#ifdef _STACK_GROWS_DOWN
+ if ((char *) c <= currentframe)
+ {
+ c = NULL;
+ break;
+ }
+#elif defined _STACK_GROWS_UP
+ if ((char *) c >= currentframe)
+ {
+ c = NULL;
+ break;
+ }
+#else
+# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
+#endif
+ 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_longjmp(env, val);
+}