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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2013-10-09 22:42:09 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2013-10-10 09:06:58 +0200 |
commit | bceabc95c1c85d793200446fa85f1ddc6313ea29 (patch) | |
tree | 973c8bd8deca9fd69913f2895cc91e0e6114d46c /freebsd/sys/sys/callout.h | |
parent | Add FreeBSD sources as a submodule (diff) | |
download | rtems-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.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/freebsd/sys/sys/callout.h b/freebsd/sys/sys/callout.h new file mode 100644 index 00000000..4686a4db --- /dev/null +++ b/freebsd/sys/sys/callout.h @@ -0,0 +1,103 @@ +/*- + * 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_ */ |