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authorSebastian Huber <sebastian.huber@embedded-brains.de>2013-10-09 22:42:09 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2013-10-10 09:06:58 +0200
commitbceabc95c1c85d793200446fa85f1ddc6313ea29 (patch)
tree973c8bd8deca9fd69913f2895cc91e0e6114d46c /freebsd/sys/sys/callout.h
parentAdd FreeBSD sources as a submodule (diff)
downloadrtems-libbsd-bceabc95c1c85d793200446fa85f1ddc6313ea29.tar.bz2
Move files to match FreeBSD layout
Diffstat (limited to 'freebsd/sys/sys/callout.h')
-rw-r--r--freebsd/sys/sys/callout.h103
1 files changed, 103 insertions, 0 deletions
diff --git a/freebsd/sys/sys/callout.h b/freebsd/sys/sys/callout.h
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+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * @(#)callout.h 8.2 (Berkeley) 1/21/94
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_CALLOUT_HH_
+#define _SYS_CALLOUT_HH_
+
+#include <freebsd/sys/queue.h>
+
+struct lock_object;
+
+SLIST_HEAD(callout_list, callout);
+TAILQ_HEAD(callout_tailq, callout);
+
+struct callout {
+ union {
+ SLIST_ENTRY(callout) sle;
+ TAILQ_ENTRY(callout) tqe;
+ } c_links;
+ int c_time; /* ticks to the event */
+ void *c_arg; /* function argument */
+ void (*c_func)(void *); /* function to call */
+ struct lock_object *c_lock; /* lock to handle */
+ int c_flags; /* state of this entry */
+ volatile int c_cpu; /* CPU we're scheduled on */
+};
+
+#define CALLOUT_LOCAL_ALLOC 0x0001 /* was allocated from callfree */
+#define CALLOUT_ACTIVE 0x0002 /* callout is currently active */
+#define CALLOUT_PENDING 0x0004 /* callout is waiting for timeout */
+#define CALLOUT_MPSAFE 0x0008 /* callout handler is mp safe */
+#define CALLOUT_RETURNUNLOCKED 0x0010 /* handler returns with mtx unlocked */
+#define CALLOUT_SHAREDLOCK 0x0020 /* callout lock held in shared mode */
+
+struct callout_handle {
+ struct callout *callout;
+};
+
+#ifdef _KERNEL
+extern int ncallout;
+
+#define callout_active(c) ((c)->c_flags & CALLOUT_ACTIVE)
+#define callout_deactivate(c) ((c)->c_flags &= ~CALLOUT_ACTIVE)
+#define callout_drain(c) _callout_stop_safe(c, 1)
+void callout_init(struct callout *, int);
+void _callout_init_lock(struct callout *, struct lock_object *, int);
+#define callout_init_mtx(c, mtx, flags) \
+ _callout_init_lock((c), ((mtx) != NULL) ? &(mtx)->lock_object : \
+ NULL, (flags))
+#define callout_init_rw(c, rw, flags) \
+ _callout_init_lock((c), ((rw) != NULL) ? &(rw)->lock_object : \
+ NULL, (flags))
+#define callout_pending(c) ((c)->c_flags & CALLOUT_PENDING)
+int callout_reset_on(struct callout *, int, void (*)(void *), void *, int);
+#define callout_reset(c, on_tick, fn, arg) \
+ callout_reset_on((c), (on_tick), (fn), (arg), (c)->c_cpu)
+#define callout_reset_curcpu(c, on_tick, fn, arg) \
+ callout_reset_on((c), (on_tick), (fn), (arg), PCPU_GET(cpuid))
+int callout_schedule(struct callout *, int);
+int callout_schedule_on(struct callout *, int, int);
+#define callout_schedule_curcpu(c, on_tick) \
+ callout_schedule_on((c), (on_tick), PCPU_GET(cpuid))
+#define callout_stop(c) _callout_stop_safe(c, 0)
+int _callout_stop_safe(struct callout *, int);
+void callout_tick(void);
+
+
+#endif
+
+#endif /* _SYS_CALLOUT_HH_ */