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/*
* $Id: imdebug.cxx,v 4.1 2004/03/16 07:11:24 hut66au Exp $
*
* Imview, the portable image analysis application
* http://www.cmis.csiro.au/Hugues.Talbot/imview
* ----------------------------------------------------------
*
* Imview is an attempt to provide an image display application
* suitable for professional image analysis. It was started in
* 1997 and is mostly the result of the efforts of Hugues Talbot,
* Image Analysis Project, CSIRO Mathematical and Information
* Sciences, with help from others (see the CREDITS files for
* more information)
*
* Imview is Copyrighted (C) 1997-2001 by Hugues Talbot and was
* supported in parts by the Australian Commonwealth Science and
* Industry Research Organisation. Please see the COPYRIGHT file
* for full details. Imview also includes the contributions of
* many others. Please see the CREDITS file for full details.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
* */
/*------------------------------------------------------------------------
*
* This file contains debugging code.
* Essentially a trivial replacement for printf that will actually output
* messages to the standard output only if a global debugging variable is
* set to 1.
*
* Hugues Talbot 5 Jan 1998
*
*-----------------------------------------------------------------------*/
#include <imcfg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <assert.h>
#include <FL/fl_ask.H>
#include "imview.hxx"
#include "StatusBox.hxx"
#ifdef HAVE_PTHREADS
# include "server/semaphore.hxx"
#endif
#include "machine.hxx"
#include "imunistd.h"
extern int debugIsOn;
extern int stopDebug;
extern int serverDebug;
extern Semaphore access_debug, access_error;
#define BUFSIZE 1000
static FILE *outfile = 0;
// these debugging routines are trickier than it seems
// Let's explain the context: under Unix there is always
// a console available (where to print messages, etc). Under
// win32 this is not necessarily the case, hence the need for
// a GUI solution, provided by the StatusBox. This is nice, but
// now observe the IM_STATUS message. This brings up a nice window
// the first time it is called, and in doing so (a show()), further
// debugging messages spring forth. However the IM_STATUS is within
// the protected area, and therefore a deadlock ensues! This seems
// to occur _only_ under windows, but the problem is genuine.
// But the GUI is precisely what the semaphores are there to protect,
// so now, while in the protected area, further messages are ignored
// debugIsOn is set to false. We will almost certainly lose some
// debugging messages, but that can't be helped.
int dbgprintf(const char * msg,...)
{
char strarg[BUFSIZE+1];
char mess[BUFSIZE+24];
int ret = 0, msglen;
va_list args;
static bool overflow = false;
if (debugIsOn && (msg[0] != '\0')) {
semaphore_down(&access_debug);
overflow = true;
debugIsOn = 0; // silence all messages
im_va_start(args,msg);
msglen = strlen(msg);
assert(msglen > 0); // I have seen this happen
if (msg[msglen-1] == '\n') {
snprintf(strarg, BUFSIZE, DEBUGPROMPT "%s", msg);
}
// default WIN32 printf is not that good.
// neither is the FLTK-replacement for (v)snprintf.
#if defined(WIN32_NOTCYGWIN) || (HAVE_SNPRINTF == 0)
char newmess[BUFSIZE];
strncpy(newmess,msg, BUFSIZE);
newmess[BUFSIZE-1] = '\0';
msglen = trivmin(BUFSIZE-1, msglen);
if (newmess[msglen-1] == '\a') {
newmess[msglen-1] = '\0'; // shorten the string
snprintf(strarg, BUFSIZE, DEBUGPROMPT "%s ", newmess); // FLTK's replacement will cope with this
} else if (newmess[msglen-1] == '\b') {
newmess[msglen-1] = '\0'; // shorten the string
snprintf(strarg, BUFSIZE, "%s\n", newmess); // FLTK's replacement will cope with this
}
#else
else if (msg[msglen-1] == '\a') {
snprintf(strarg, BUFSIZE, DEBUGPROMPT "%.*s ",msglen-1, msg);
} else if (msg[msglen-1] == '\b') {
snprintf(strarg, BUFSIZE, "%.*s\n", msglen-1, msg);
}
#endif
else {
snprintf(strarg, BUFSIZE, "%s", msg);
}
//ret = vfprintf(stderr,strarg,args);
ret = vsnprintf(mess, BUFSIZE+24, strarg, args);
if (outfile == 0) {
#ifdef WIN32_NOTCYGWIN
outfile = fopen("c:/temp/imbugs.txt", "w");
#else
outfile = fopen("/tmp/imbugs.txt", "w");
#endif
}
if (outfile != 0) {
fprintf(outfile, "%s", mess);
fflush(outfile); /* slow, but WHO CARES!! */
}
IM_STATUS(mess);
va_end(args);
debugIsOn = 1; // enable messages again
overflow = false;
semaphore_up(&access_debug);
if (stopDebug) {
getchar();
}
} else if (overflow) {
// simply printf the message, this is debugging the debugging process...
// we are assuming that printf is thread-safe.
im_va_start(args,msg);
msglen = strlen(msg);
if ((msg[msglen-1] == '\n') || (msg[msglen-1] == '\a')) {
snprintf(strarg, BUFSIZE, "lost message: %s", msg);
} else if (msg[msglen-1] == '\b') {
snprintf(strarg, BUFSIZE, "%s\n", msg);
}
vprintf(strarg, args);
va_end(args);
// we are only doing it for dbgprintf at this stage to get a feel of how much is lost...
}
return ret;
}
/* same thing, except it doesn't stop for char input,
and prints a slightly different message */
int srv_dbgprintf(const char * msg,...)
{
char strarg[BUFSIZE];
char mess[BUFSIZE+24];
int ret = 0, msglen;
va_list args;
// if (debugIsOn) {
// im_va_start(args, msg);
// vfprintf(stderr, msg, args);
// return 0;
// }
if (debugIsOn) {
semaphore_down(&access_debug);
debugIsOn = 0; // ignore further messages, ha.
im_va_start(args,msg);
msglen = strlen(msg);
if (msg[msglen-1] == '\n') {
snprintf(strarg, BUFSIZE, SRVDBGPRMPT "%s", msg);
}
#ifdef WIN32_NOTCYGWIN
// far messier
char newmess[BUFSIZE];
strncpy(newmess,msg, BUFSIZE);
newmess[BUFSIZE-1] = '\0';
msglen = trivmin(BUFSIZE-1, msglen);
if (newmess[msglen-1] == '\a') {
newmess[msglen-1] = '\0'; // shorten the string
snprintf(strarg, BUFSIZE, SRVDBGPRMPT "%s ", newmess);
} else if (newmess[msglen-1] == '\b') {
newmess[msglen-1] = '\0'; // shorten the string
snprintf(strarg, BUFSIZE, "%s\n", newmess);
}
#else
else if (msg[msglen-1] == '\a') {
snprintf(strarg, BUFSIZE, SRVDBGPRMPT "%.*s ",msglen-1, msg);
} else if (msg[msglen-1] == '\b') {
snprintf(strarg, BUFSIZE, "%.*s\n", msglen-1, msg);
}
#endif
else {
snprintf(strarg, BUFSIZE, "%s", msg);
}
//ret = vfprintf(stderr,strarg,args);
ret = vsnprintf(mess, BUFSIZE+24, strarg, args);
if (outfile == 0) {
#ifdef WIN32_NOTCYGWIN
outfile = fopen("c:/temp/imbugs.txt", "w");
#else
outfile = fopen("/tmp/imbugs.txt", "w");
#endif
}
if (outfile != 0) {
fprintf(outfile, "%s", mess);
fflush(outfile); /* slow, but WHO CARES!! */
}
IM_STATUS(mess);
va_end(args);
debugIsOn = 1;
semaphore_up(&access_debug);
}
return ret;
}
/* same thing, except it doesn't stop for char input,
and prints a slightly different message */
int srv_internal_dbgprintf(const char * msg,...)
{
char strarg[BUFSIZE];
char mess[BUFSIZE+24];
int ret = 0, msglen;
va_list args;
if (serverDebug) {
semaphore_down(&access_debug);
serverDebug = 0; // ignore further messages, ha!
im_va_start(args,msg);
msglen = strlen(msg);
if (msg[msglen-1] == '\n') {
snprintf(strarg, BUFSIZE, SRVIDBGPRMPT "%s", msg);
}
#ifdef WIN32_NOTCYGWIN
char newmess[BUFSIZE];
strncpy(newmess,msg, BUFSIZE);
newmess[BUFSIZE-1] = '\0';
msglen = trivmin(BUFSIZE-1, msglen);
if (newmess[msglen-1] == '\a') {
newmess[msglen-1] = '\0'; // shorten the string
snprintf(strarg, BUFSIZE, SRVIDBGPRMPT "%s ", newmess);
} else if (newmess[msglen-1] == '\b') {
newmess[msglen-1] = '\0'; // shorten the string
snprintf(strarg, BUFSIZE, "%s\n", newmess);
}
#else
else if (msg[msglen-1] == '\a') {
snprintf(strarg, BUFSIZE, SRVIDBGPRMPT "%.*s ",msglen-1, msg);
} else if (msg[msglen-1] == '\b') {
snprintf(strarg, BUFSIZE, "%.*s\n", msglen-1, msg);
}
#endif
else {
snprintf(strarg, BUFSIZE, "%s", msg);
}
//ret = vfprintf(stderr,strarg,args);
ret = vsnprintf(mess, BUFSIZE+24, strarg, args);
IM_STATUS(mess);
va_end(args);
serverDebug = 1;
semaphore_up(&access_debug);
}
return ret;
}
/* protected printf for the server */
int srv_printf(const char * msg,...)
{
int ret = 0;
va_list args;
semaphore_down(&access_debug);
im_va_start(args,msg);
ret = vprintf(msg,args);
va_end(args);
fflush(stdout);
semaphore_up(&access_debug);
return ret;
}
// this will actually print an error on the standard output stream
// as well as on the error console
int stderrprintf(const char * msg,...)
{
char strarg[BUFSIZE];
char mess[BUFSIZE+24];
int ret = 0;
va_list args;
semaphore_down(&access_error);
im_va_start(args,msg);
snprintf(strarg, BUFSIZE, ERRORPROMPT "%s", msg);
//ret = vfprintf(stderr,strarg,args);
ret = vsnprintf(mess, BUFSIZE+24, strarg, args);
IM_ERROR(mess); // on the error/warning console
fprintf(stderr, "%s", mess); // on the std error stream
va_end(args);
semaphore_up(&access_error);
return ret;
}
// This will pop up an error dialog
int errprintf(const char * msg,...)
{
char strarg[BUFSIZE];
int ret = 0;
va_list args;
semaphore_down(&access_error);
im_va_start(args,msg);
ret = vsnprintf(strarg, BUFSIZE, msg,args);
va_end(args);
fl_alert("%s", strarg); // this can block for quite a long time!
semaphore_up(&access_error);
return ret;
}
// This will show up in the status box
int warnprintf(const char * msg,...)
{
char strarg[BUFSIZE];
char mess[BUFSIZE+24];
int i, j, ret = 0;
va_list args;
semaphore_down(&access_error);
im_va_start(args,msg);
// separate the lines
IM_WARNING("Warning:\n");
vsnprintf(strarg, BUFSIZE, msg, args);
for (i=0, j= 0; ((i < BUFSIZE) && (strarg[i] != '\0')); i++, j++) {
mess[j] = strarg[i];
if (strarg[i] == '\n') {
mess[j+1] = '\0'; // OK due to +24
IM_WARNING(mess);
j = -1; // j++ gets executed
}
}
IM_WARNING("\n");
va_end(args);
semaphore_up(&access_error);
return ret;
}
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