1 files changed, 74 insertions, 0 deletions
diff --git a/lib/libkse/thread/thr_kill.c b/lib/libkse/thread/thr_kill.c
new file mode 100644
index 0000000..4bf1761
--- /dev/null
+++ b/lib/libkse/thread/thr_kill.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
+ * 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, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by John Birrell.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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 <errno.h>
+#include <signal.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+int
+pthread_kill(pthread_t pthread, int sig)
+{
+	int ret;
+
+	/* Check for invalid signal numbers: */
+	if (sig < 0 || sig >= NSIG)
+		/* Invalid signal: */
+		ret = EINVAL;
+	/*
+	 * Ensure the thread is in the list of active threads, and the
+	 * signal is valid (signal 0 specifies error checking only) and
+	 * not being ignored:
+	 */
+	else if (((ret = _find_thread(pthread)) == 0) && (sig > 0) &&
+	    (_thread_sigact[sig - 1].sa_handler != SIG_IGN)) {
+		/*
+		 * Defer signals to protect the scheduling queues from
+		 * access by the signal handler:
+		 */
+		_thread_kern_sig_defer();
+
+		_thread_sig_send(pthread, sig);
+
+		/*
+		 * Undefer and handle pending signals, yielding if
+		 * necessary:
+		 */
+		_thread_kern_sig_undefer();
+	}
+
+	/* Return the completion status: */
+	return (ret);
+}
+#endif