* kevent(2) support; from FreeBSD.

* change _thread_kern_set_timeout() parm to const.

1 files changed, 77 insertions, 0 deletions

diff --git a/lib/libpthread/uthread/uthread_kevent.c b/lib/libpthread/uthread/uthread_kevent.c
new file mode 100644
index 00000000000..0985d05d38a
--- /dev/null
+++ b/lib/libpthread/uthread/uthread_kevent.c
@@ -0,0 +1,77 @@
+/*	$OpenBSD: uthread_kevent.c,v 1.1 2001/08/15 23:50:34 fgsch Exp $	*/
+/*-
+ * Copyright (c) 2000 Jonathan Lemon <jlemon@flugsvamp.com>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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: uthread_kevent.c,v 1.5 2001/04/10 04:19:20 deischen Exp $
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/event.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+int 
+kevent(int kq, const struct kevent *changelist, int nchanges,
+    struct kevent *eventlist, int nevents, const struct timespec *timeout)
+{
+	struct timespec nullts = { 0, 0 };
+	int rc;
+
+	/* Set the wake up time */
+	_thread_kern_set_timeout(timeout);
+
+	rc = _thread_sys_kevent(kq, changelist, nchanges,
+	    eventlist, nevents, &nullts);
+	if (rc == 0 && (timeout == NULL ||
+	    timeout->tv_sec != 0 || timeout->tv_nsec != 0)) {
+		/* Save the socket file descriptor: */
+		_thread_run->data.fd.fd = kq;
+		_thread_run->data.fd.fname = __FILE__;
+		_thread_run->data.fd.branch = __LINE__;
+
+		do {
+			/* Reset the interrupted and timeout flags: */
+			_thread_run->interrupted = 0;
+			_thread_run->timeout = 0;
+
+			_thread_kern_sched_state(PS_FDR_WAIT,
+			    __FILE__, __LINE__);
+
+			if (_thread_run->interrupted) {
+				errno = EINTR;
+				rc = -1;
+				break;
+			}
+			rc = _thread_sys_kevent(kq, NULL, 0,
+			    eventlist, nevents, &nullts);
+		} while (rc == 0 && _thread_run->timeout == 0);
+	}
+	return (rc);
+}
+#endif