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#line 2 "debug.c"
/*-
* C-SaCzech
* Copyright (c) 1996-2002 Jaromir Dolecek <dolecek@ics.muni.cz>
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jaromir Dolecek
* for the CSacek project.
* 4. The name of Jaromir Dolecek may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY JAROMIR DOLECEK ``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 JAROMIR DOLECEK 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.
*/
/* $Id: debug.c,v 1.42 2002/02/03 11:13:41 dolecek Exp $ */
#include "csacek.h"
#ifdef CSA_DEBUG
#ifdef __MSWIN__
int csa_debug_uniqid=0;
#endif
#ifdef CSA_THREADSAFE
csa_mutex *csa_debuglog_mutex;
#endif
static int debug_no=0; /* debug log number */
/* initialize debugfd and a few other needed things */
FILE *
csa_debug_start()
{
const char *prefix, *suffix;
char buf[2048];
FILE *dd;
int debug_num;
int num;
prefix = getenv("TEMP");
if (!prefix) {
prefix = getenv("TMP");
if (!prefix) {
#ifdef __MSWIN__
prefix = "C:\\";
#else
prefix = "/tmp";
#endif
}
}
#ifdef __MSWIN__
suffix = ".csa";
/* see csa_init_compat() for why we use this instead of getpid()
* under MS Windows */
num = csa_debug_uniqid;
#else
suffix = "";
num = (int) getpid();
#endif
csa_acquire_mutex(csa_debuglog_mutex);
debug_num = debug_no++;
csa_release_mutex(csa_debuglog_mutex);
sprintf(buf, "%s/csacek_debug_%d_%d%s", prefix, num, debug_num,
suffix);
dd = fopen(buf, "wb");
if (dd) {
/* do NOT buffer debug log - program can crash any time */
#ifndef SETVBUF_REVERSED
setvbuf(dd, NULL, _IONBF, 0 ); /* "normal" form */
#else
setvbuf(dd, _IONBF, NULL, 0 ); /* reversed form */
#endif
csa_debug(dd, "--- BEGIN DEBUG LOG ---");
}
return dd;
}
/*
* write a message to debug log
*/
void
#ifdef __ANSI_C__
csa_debug(FILE *dbg, const char *fmt, ...)
#else
csa_debug(dbg, fmt /*, ... */)
FILE *dbg;
const char *fmt;
#endif /* __ANSI_C__ */
{
va_list arg;
fputs("DEBUG: ", dbg);
va_start(arg, fmt);
#ifndef __ANSI_C__
fmt = va_arg(arg, char *);
#endif
vfprintf(dbg, fmt, arg);
va_end(arg);
fputs("\n", dbg);
}
void
csa_debug_end(dbg)
FILE *dbg;
{
csa_debug(dbg, "--- END DEBUG LOG ---");
fclose(dbg);
}
static void x_debug_end __P((void *));
static void x_debug_child_end __P((void *));
static void
x_debug_end(dbg)
void * dbg;
{
csa_debug_end((FILE *)dbg);
}
static void
x_debug_child_end(dbg)
void *dbg;
{
/*
* If the dbg stream would be buffered, this would
* probably cause that some data would be duplicated
* on child cleanup in debug log (the underlying buffer
* would be flushed in parent and in child as well),
* but since it's NOT buffered, there is no problem.
*/
fclose((FILE *)dbg);
}
/* schedules closing of the debug log file upon the pool destroy */
void csa_debug_register_cleanup(wpool, dbg)
struct pool *wpool;
FILE *dbg;
{
ap_register_cleanup(wpool, (void *)dbg, x_debug_end,
x_debug_child_end);
}
#endif /* CSA_DEBUG */
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