2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef _LINUX_COMPLETION_H_
29 #define _LINUX_COMPLETION_H_
31 #include <linux/errno.h>
32 #include <linux/sched.h>
33 #include <linux/wait.h>
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/sleepqueue.h>
38 #include <sys/kernel.h>
45 #define INIT_COMPLETION(c) ((c).done = 0)
46 #define init_completion(c) ((c)->done = 0)
49 _complete_common(struct completion *c, int all)
56 wakeup_swapper = sleepq_broadcast(c, SLEEPQ_SLEEP, 0, 0);
58 wakeup_swapper = sleepq_signal(c, SLEEPQ_SLEEP, 0, 0);
64 #define complete(c) _complete_common(c, 0)
65 #define complete_all(c) _complete_common(c, 1)
68 * Indefinite wait for done != 0 with or without signals.
71 _wait_for_common(struct completion *c, int flags)
74 flags |= SLEEPQ_SLEEP;
79 sleepq_add(c, NULL, "completion", flags, 0);
80 if (flags & SLEEPQ_INTERRUPTIBLE) {
81 if (sleepq_wait_sig(c, 0) != 0)
82 return (-ERESTARTSYS);
92 #define wait_for_completion(c) _wait_for_common(c, 0)
93 #define wait_for_completion_interuptible(c) \
94 _wait_for_common(c, SLEEPQ_INTERRUPTIBLE)
97 _wait_for_timeout_common(struct completion *c, long timeout, int flags)
101 end = ticks + timeout;
102 flags |= SLEEPQ_SLEEP;
107 sleepq_add(c, NULL, "completion", flags, 0);
108 sleepq_set_timeout(c, end - ticks);
109 if (flags & SLEEPQ_INTERRUPTIBLE) {
110 if (sleepq_timedwait_sig(c, 0) != 0)
111 return (-ERESTARTSYS);
113 sleepq_timedwait(c, 0);
117 timeout = end - ticks;
119 return (timeout > 0 ? timeout : 1);
122 #define wait_for_completion_timeout(c, timeout) \
123 _wait_for_timeout_common(c, timeout, 0)
124 #define wait_for_completion_interruptible_timeout(c, timeout) \
125 _wait_for_timeout_common(c, timeout, SLEEPQ_INTERRUPTIBLE)
128 try_wait_for_completion(struct completion *c)
143 completion_done(struct completion *c)
155 #endif /* _LINUX_COMPLETION_H_ */