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author | kib <kib@FreeBSD.org> | 2013-08-30 07:37:45 +0000 |
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committer | kib <kib@FreeBSD.org> | 2013-08-30 07:37:45 +0000 |
commit | dc9c173247c790c181a79be41f9f9218a09e91de (patch) | |
tree | 7e32c2dc4fb05970952fa71ce5f8fee61a31c126 /sys/sys/_unrhdr.h | |
parent | e0b55fed21a8853d524e789d751457cd5920d6f3 (diff) | |
download | FreeBSD-src-dc9c173247c790c181a79be41f9f9218a09e91de.zip FreeBSD-src-dc9c173247c790c181a79be41f9f9218a09e91de.tar.gz |
Move the definition of the struct unrhdr into a separate header file,
to allow embedding the struct. Add init_unrhdr(9) initializer, which
sets up preallocated unrhdr.
Reviewed by: alc
Tested by: pho, bf
Diffstat (limited to 'sys/sys/_unrhdr.h')
-rw-r--r-- | sys/sys/_unrhdr.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sys/sys/_unrhdr.h b/sys/sys/_unrhdr.h new file mode 100644 index 0000000..f3c25d1 --- /dev/null +++ b/sys/sys/_unrhdr.h @@ -0,0 +1,51 @@ +/*- + * Copyright (c) 2004 Poul-Henning Kamp + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + * $FreeBSD$ + */ + +#ifndef _SYS_UNRHDR_H +#define _SYS_UNRHDR_H + +#include <sys/queue.h> + +struct mtx; + +/* Header element for a unr number space. */ + +struct unrhdr { + TAILQ_HEAD(unrhd,unr) head; + u_int low; /* Lowest item */ + u_int high; /* Highest item */ + u_int busy; /* Count of allocated items */ + u_int alloc; /* Count of memory allocations */ + u_int first; /* items in allocated from start */ + u_int last; /* items free at end */ + struct mtx *mtx; + TAILQ_HEAD(unrfr,unr) ppfree; /* Items to be freed after mtx + lock dropped */ +}; + +#endif |