NetBSD/lib/libpthread/debuglog.c

159 lines
3.9 KiB
C

/* $NetBSD: debuglog.c,v 1.5 2003/08/20 09:50:16 martin Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Nathan J. Williams.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <err.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/shm.h>
#include "pthread.h"
#include "pthread_int.h"
void pthread__debuglog_read(int, int);
void pthread__debuglog_rawdump(void);
void usage(void);
static struct pthread_msgbuf* debugbuf;
int
main(int argc, char *argv[])
{
int ch;
extern int optind;
extern char *optarg;
int follow, initialize, raw, keep;
follow = 0;
initialize = 0;
raw = 0;
keep = 0;
while ((ch = getopt(argc, argv, "rfik")) != -1)
switch (ch) {
case 'k':
keep = 1;
break;
case 'r':
raw = 1;
break;
case 'f':
follow = 1;
break;
case 'i':
initialize = 1;
break;
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
debugbuf = pthread__debuglog_init(initialize);
if (raw)
pthread__debuglog_rawdump();
else
pthread__debuglog_read(follow, !keep);
return 0;
}
void
pthread__debuglog_rawdump(void)
{
printf("Debug log raw dump\n");
printf("Magic: %06x\n", debugbuf->msg_magic);
printf("Size: %06llx\n", (long long)debugbuf->msg_bufs);
printf("Read start: %ld Write start: %ld\n\n",
(long)debugbuf->msg_bufr, (long)debugbuf->msg_bufw);
fwrite(&debugbuf->msg_bufc[0], debugbuf->msg_bufs, 1, stdout);
}
void
pthread__debuglog_read(int follow, int trunc)
{
int readp, writep;
do {
readp = debugbuf->msg_bufr;
writep = debugbuf->msg_bufw;
if (readp < writep) {
fwrite(&debugbuf->msg_bufc[readp], writep - readp,
1, stdout);
} else if (readp > writep) {
fwrite(&debugbuf->msg_bufc[readp],
debugbuf->msg_bufs - readp, 1, stdout);
fwrite(&debugbuf->msg_bufc[0], writep, 1, stdout);
}
if (trunc)
debugbuf->msg_bufr = writep;
if (follow)
sleep(1);
} while (follow);
}
void usage()
{
fprintf(stderr,"usage: debuglog [-fi]\n");
exit(1);
}