161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
/* $NetBSD: debuglog.c,v 1.7 2007/03/02 18:53:51 ad Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nathan J. Williams.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <err.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/shm.h>
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#include "pthread.h"
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#include "pthread_int.h"
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void pthread__debuglog_read(int, int);
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void pthread__debuglog_rawdump(void);
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void usage(void);
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static struct pthread_msgbuf* debugbuf;
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int
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main(int argc, char *argv[])
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{
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int ch;
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extern int optind;
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extern char *optarg;
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int follow, initialize, raw, keep;
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setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
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follow = 0;
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initialize = 0;
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raw = 0;
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keep = 0;
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while ((ch = getopt(argc, argv, "rfik")) != -1)
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switch (ch) {
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case 'k':
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keep = 1;
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break;
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case 'r':
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raw = 1;
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break;
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case 'f':
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follow = 1;
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break;
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case 'i':
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initialize = 1;
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break;
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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if (argc != 0)
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usage();
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debugbuf = pthread__debuglog_init(initialize);
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if (raw)
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pthread__debuglog_rawdump();
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else
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pthread__debuglog_read(follow, !keep);
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return 0;
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}
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void
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pthread__debuglog_rawdump(void)
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{
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printf("Debug log raw dump\n");
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printf("Magic: %06x\n", debugbuf->msg_magic);
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printf("Size: %06llx\n", (long long)debugbuf->msg_bufs);
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printf("Read start: %ld Write start: %ld\n\n",
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(long)debugbuf->msg_bufr, (long)debugbuf->msg_bufw);
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fwrite(&debugbuf->msg_bufc[0], debugbuf->msg_bufs, 1, stdout);
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}
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void
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pthread__debuglog_read(int follow, int trunc)
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{
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int readp, writep;
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do {
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readp = debugbuf->msg_bufr;
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writep = debugbuf->msg_bufw;
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if (readp < writep) {
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fwrite(&debugbuf->msg_bufc[readp], writep - readp,
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1, stdout);
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} else if (readp > writep) {
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fwrite(&debugbuf->msg_bufc[readp],
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debugbuf->msg_bufs - readp, 1, stdout);
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fwrite(&debugbuf->msg_bufc[0], writep, 1, stdout);
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}
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if (trunc)
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debugbuf->msg_bufr = writep;
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if (follow)
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sched_yield();
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} while (follow);
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}
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void usage()
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{
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fprintf(stderr,"usage: debuglog [-fi]\n");
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exit(1);
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}
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