/* Copyright (C) 2004 J.F.Dockes
* 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 02111-1307, USA.
*/
//
// Small test program to evaluate the cost of using mutex locks: calls
// to methods doing a small (150 bytes) base64 encoding job + string
// manips, with and without locking. The performance cost is
// negligible on all machines I tested (around 0.3% to 2% depending on
// the system and machine), but not inexistent, you would not want
// this in a tight loop.
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string>
using namespace std;
#include "ptmutex.h"
#include "base64.h"
static char *thisprog;
static char usage [] =
"ptmutex [-l] count\n"
"\n"
;
static void
Usage(void)
{
fprintf(stderr, "%s: usage:\n%s", thisprog, usage);
exit(1);
}
static int op_flags;
#define OPT_MOINS 0x1
#define OPT_l 0x2
static const string convertbuffer =
"* The recoll GUI program sometimes crashes when running a query while\
the indexing thread is active. Possible workarounds:";
static PTMutexInit o_lock;
void workerlock(string& out)
{
PTMutexLocker locker(o_lock);
base64_encode(convertbuffer, out);
}
void workernolock(string& out)
{
base64_encode(convertbuffer, out);
}
int main(int argc, char **argv)
{
int count = 0;
thisprog = argv[0];
argc--; argv++;
while (argc > 0 && **argv == '-') {
(*argv)++;
if (!(**argv))
/* Cas du "adb - core" */
Usage();
while (**argv)
switch (*(*argv)++) {
case 'l': op_flags |= OPT_l; break;
default: Usage(); break;
}
b1: argc--; argv++;
}
if (argc != 1)
Usage();
count = atoi(*argv++);argc--;
if (op_flags & OPT_l) {
fprintf(stderr, "Looping %d, locking\n", count);
for (int i = 0; i < count; i++) {
string s;
workerlock(s);
}
} else {
fprintf(stderr, "Looping %d, no locking\n", count);
for (int i = 0; i < count; i++) {
string s;
workernolock(s);
}
}
exit(0);
}