Override libc function raise(), in threading mode, raise() will

send signal to current thread.

Reviewed by: deischen

1 files changed, 53 insertions, 0 deletions

diff --git a/lib/libpthread/thread/thr_raise.c b/lib/libpthread/thread/thr_raise.c
new file mode 100644
index 0000000..0554fa4
--- /dev/null
+++ b/lib/libpthread/thread/thr_raise.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2003 David Xu<davidxu@freebsd.org>.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice(s), this list of conditions and the following disclaimer as
+ *    the first lines of this file unmodified other than the possible
+ *    addition of one or more copyright notices.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice(s), this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <pthread.h>
+#include <errno.h>
+#include "thr_private.h"
+
+__weak_reference(_raise, raise);
+
+int
+_raise(int sig)
+{
+	int ret;
+
+	if (!_kse_isthreaded())
+		ret = kill(getpid(), sig);
+	else {
+		ret = pthread_kill(pthread_self(), sig);
+		if (ret != 0) {
+			errno = ret;
+			ret = -1;
+		}
+	}
+	return (ret);
+}