mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-14 14:21:18 +01:00
5e3934b15a
Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/ Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/ Sponsored by: Netflix
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/* $NetBSD: queue.c,v 1.5 2011/08/31 16:24:57 plunky Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 1999 James Howard and Dag-Erling Smørgrav
|
|
* All rights reserved.
|
|
* Copyright (c) 2020 Kyle Evans <kevans@FreeBSD.org>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* A really poor man's queue. It does only what it has to and gets out of
|
|
* Dodge. It is used in place of <sys/queue.h> to get a better performance.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/queue.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "grep.h"
|
|
|
|
typedef struct str qentry_t;
|
|
|
|
static long long filled;
|
|
static qentry_t *qend, *qpool;
|
|
|
|
/*
|
|
* qnext is the next entry to populate. qlist is where the list actually
|
|
* starts, for the purposes of printing.
|
|
*/
|
|
static qentry_t *qlist, *qnext;
|
|
|
|
void
|
|
initqueue(void)
|
|
{
|
|
|
|
qlist = qnext = qpool = grep_calloc(Bflag, sizeof(*qpool));
|
|
qend = qpool + (Bflag - 1);
|
|
}
|
|
|
|
static qentry_t *
|
|
advqueue(qentry_t *itemp)
|
|
{
|
|
|
|
if (itemp == qend)
|
|
return (qpool);
|
|
return (itemp + 1);
|
|
}
|
|
|
|
/*
|
|
* Enqueue another line; return true if we've dequeued a line as a result
|
|
*/
|
|
bool
|
|
enqueue(struct str *x)
|
|
{
|
|
qentry_t *item;
|
|
bool rotated;
|
|
|
|
item = qnext;
|
|
qnext = advqueue(qnext);
|
|
rotated = false;
|
|
|
|
if (filled < Bflag) {
|
|
filled++;
|
|
} else if (filled == Bflag) {
|
|
/* We had already filled up coming in; just rotate. */
|
|
qlist = advqueue(qlist);
|
|
rotated = true;
|
|
free(item->dat);
|
|
}
|
|
/* len + 1 for NUL-terminator */
|
|
item->dat = grep_malloc(sizeof(char) * x->len + 1);
|
|
item->len = x->len;
|
|
item->line_no = x->line_no;
|
|
item->boff = x->boff;
|
|
item->off = x->off;
|
|
memcpy(item->dat, x->dat, x->len);
|
|
item->dat[x->len] = '\0';
|
|
item->file = x->file;
|
|
|
|
return (rotated);
|
|
}
|
|
|
|
void
|
|
printqueue(void)
|
|
{
|
|
qentry_t *item;
|
|
|
|
item = qlist;
|
|
do {
|
|
/* Buffer must have ended early. */
|
|
if (item->dat == NULL)
|
|
break;
|
|
|
|
grep_printline(item, '-');
|
|
free(item->dat);
|
|
item->dat = NULL;
|
|
item = advqueue(item);
|
|
} while (item != qlist);
|
|
|
|
qlist = qnext = qpool;
|
|
filled = 0;
|
|
}
|
|
|
|
void
|
|
clearqueue(void)
|
|
{
|
|
qentry_t *item;
|
|
|
|
item = qlist;
|
|
do {
|
|
free(item->dat);
|
|
item->dat = NULL;
|
|
item = advqueue(item);
|
|
} while (item != qlist);
|
|
|
|
qlist = qnext = qpool;
|
|
filled = 0;
|
|
}
|