Module Name: src
Committed By: riastradh
Date: Wed Jul 24 03:07:28 UTC 2013
Added Files:
src/sys/external/bsd/drm2/include/linux [riastradh-drm2]: completion.h
Log Message:
Add <linux/completion.h>.
A completion is a synchronized waitable `done' flag. Trivial
condvar/mutex/bool.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1.2.1 \
src/sys/external/bsd/drm2/include/linux/completion.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/external/bsd/drm2/include/linux/completion.h
diff -u /dev/null src/sys/external/bsd/drm2/include/linux/completion.h:1.1.2.1
--- /dev/null Wed Jul 24 03:07:28 2013
+++ src/sys/external/bsd/drm2/include/linux/completion.h Wed Jul 24 03:07:28 2013
@@ -0,0 +1,91 @@
+/* $NetBSD: completion.h,v 1.1.2.1 2013/07/24 03:07:28 riastradh Exp $ */
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#ifndef _LINUX_COMPLETION_H_
+#define _LINUX_COMPLETION_H_
+
+#include <sys/types.h>
+#include <sys/condvar.h>
+#include <sys/mutex.h>
+
+struct completion {
+ kmutex_t c_lock;
+ kcondvar_t c_cv;
+ bool c_done;
+};
+
+static inline void
+INIT_COMPLETION(struct completion *completion)
+{
+
+ mutex_enter(&completion->c_lock);
+ completion->c_done = false;
+ mutex_exit(&completion->c_lock);
+}
+
+static inline void
+init_completion(struct completion *completion)
+{
+
+ mutex_init(&completion->c_lock, MUTEX_DEFAULT, IPL_NONE);
+ cv_init(&completion->c_cv, "lnxcmplt");
+ completion->c_done = false;
+}
+
+static inline void
+complete_all(struct completion *completion)
+{
+
+ mutex_enter(&completion->c_lock);
+ completion->c_done = true;
+ cv_broadcast(&completion->c_cv);
+ mutex_exit(&completion->c_lock);
+}
+
+static inline int
+wait_for_completion_interruptible_timeout(struct completion *completion,
+ unsigned long ticks)
+{
+ int error = 0;
+
+ mutex_enter(&completion->c_lock);
+ while (!completion->c_done) {
+ error = cv_timedwait_sig(&completion->c_cv,
+ &completion->c_lock, ticks);
+ if (error)
+ break;
+ }
+ mutex_exit(&completion->c_lock);
+
+ return error;
+}
+
+#endif /* _LINUX_COMPLETION_H_ */
