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d3cb0d99e0
Change the spelling of the "catch" option to be consistent with the new options. Implement the "no wait" option. An implementation of the "CPU private" for i386 will be committed at a later date.
57 lines
2.2 KiB
C
57 lines
2.2 KiB
C
/*-
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* Copyright (c) 2003-2004 Alan L. Cox <alc@cs.rice.edu>
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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 _SYS_SF_BUF_H_
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#define _SYS_SF_BUF_H_
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#include <machine/sf_buf.h>
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/*
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* Options to sf_buf_alloc() are specified through its flags argument. This
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* argument's value should be the result of a bitwise or'ing of one or more
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* of the following values.
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*/
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#define SFB_CATCH 1 /* Check signals if the allocation
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sleeps. */
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#define SFB_CPUPRIVATE 2 /* Create a CPU private mapping. */
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#define SFB_DEFAULT 0
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#define SFB_NOWAIT 4 /* Return NULL if all bufs are used. */
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struct vm_page;
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extern int nsfbufs; /* Number of sendfile(2) bufs alloced */
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extern int nsfbufspeak; /* Peak of nsfbufsused */
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extern int nsfbufsused; /* Number of sendfile(2) bufs in use */
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struct sf_buf *
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sf_buf_alloc(struct vm_page *m, int flags);
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void sf_buf_free(struct sf_buf *sf);
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void sf_buf_mext(void *addr, void *args);
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#endif /* !_SYS_SF_BUF_H_ */
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