718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
135 lines
5.0 KiB
C
135 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2007 Ariff Abdullah <ariff@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SND_CLONE_H_
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#define _SND_CLONE_H_
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struct snd_clone_entry;
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struct snd_clone;
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/*
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* 750 milisecond default deadline. Short enough to not cause excessive
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* garbage collection, long enough to indicate stalled VFS.
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*/
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#define SND_CLONE_DEADLINE_DEFAULT 750
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/*
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* Fit within 24bit MAXMINOR.
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*/
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#define SND_CLONE_MAXUNIT 0xffffff
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/*
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* Creation flags, mostly related to the behaviour of garbage collector.
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*
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* SND_CLONE_ENABLE - Enable clone allocation.
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* SND_CLONE_GC_ENABLE - Enable garbage collector operation, automatically
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* or if explicitly called upon.
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* SND_CLONE_GC_UNREF - Garbage collect during unref operation.
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* SND_CLONE_GC_LASTREF - Garbage collect during last reference
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* (refcount = 0)
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* SND_CLONE_GC_EXPIRED - Don't garbage collect unless the global clone
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* handler has been expired.
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* SND_CLONE_GC_REVOKE - Revoke clone invocation status which has been
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* expired instead of removing and freeing it.
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* SND_CLONE_WAITOK - malloc() is allowed to sleep while allocating
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* clone entry.
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*/
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#define SND_CLONE_ENABLE 0x00000001
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#define SND_CLONE_GC_ENABLE 0x00000002
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#define SND_CLONE_GC_UNREF 0x00000004
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#define SND_CLONE_GC_LASTREF 0x00000008
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#define SND_CLONE_GC_EXPIRED 0x00000010
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#define SND_CLONE_GC_REVOKE 0x00000020
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#define SND_CLONE_WAITOK 0x80000000
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#define SND_CLONE_GC_MASK (SND_CLONE_GC_ENABLE | \
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SND_CLONE_GC_UNREF | \
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SND_CLONE_GC_LASTREF | \
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SND_CLONE_GC_EXPIRED | \
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SND_CLONE_GC_REVOKE)
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#define SND_CLONE_MASK (SND_CLONE_ENABLE | SND_CLONE_GC_MASK | \
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SND_CLONE_WAITOK)
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/*
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* Runtime clone device flags
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*
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* These are mostly private to the clone manager operation:
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*
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* SND_CLONE_NEW - New clone allocation in progress.
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* SND_CLONE_INVOKE - Cloning being invoked, waiting for next VFS operation.
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* SND_CLONE_BUSY - In progress, being referenced by living thread/proc.
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*/
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#define SND_CLONE_NEW 0x00000001
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#define SND_CLONE_INVOKE 0x00000002
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#define SND_CLONE_BUSY 0x00000004
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/*
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* Nothing important, just for convenience.
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*/
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#define SND_CLONE_ALLOC (SND_CLONE_NEW | SND_CLONE_INVOKE | \
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SND_CLONE_BUSY)
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#define SND_CLONE_DEVMASK SND_CLONE_ALLOC
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void snd_timestamp(struct timespec *);
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struct snd_clone *snd_clone_create(int, int, int, uint32_t);
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int snd_clone_busy(struct snd_clone *);
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int snd_clone_enable(struct snd_clone *);
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int snd_clone_disable(struct snd_clone *);
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int snd_clone_getsize(struct snd_clone *);
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int snd_clone_getmaxunit(struct snd_clone *);
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int snd_clone_setmaxunit(struct snd_clone *, int);
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int snd_clone_getdeadline(struct snd_clone *);
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int snd_clone_setdeadline(struct snd_clone *, int);
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int snd_clone_gettime(struct snd_clone *, struct timespec *);
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uint32_t snd_clone_getflags(struct snd_clone *);
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uint32_t snd_clone_setflags(struct snd_clone *, uint32_t);
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int snd_clone_getdevtime(struct cdev *, struct timespec *);
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uint32_t snd_clone_getdevflags(struct cdev *);
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uint32_t snd_clone_setdevflags(struct cdev *, uint32_t);
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int snd_clone_gc(struct snd_clone *);
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void snd_clone_destroy(struct snd_clone *);
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int snd_clone_acquire(struct cdev *);
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int snd_clone_release(struct cdev *);
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int snd_clone_ref(struct cdev *);
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int snd_clone_unref(struct cdev *);
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void snd_clone_register(struct snd_clone_entry *, struct cdev *);
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struct snd_clone_entry *snd_clone_alloc(struct snd_clone *, struct cdev **,
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int *, int);
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#define snd_clone_enabled(x) ((x) != NULL && \
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(snd_clone_getflags(x) & SND_CLONE_ENABLE))
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#define snd_clone_disabled(x) (!snd_clone_enabled(x))
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#endif /* !_SND_CLONE_H */
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