gecko-dev/tools/trace-malloc/leakstats.c

196 lines
5.9 KiB
C

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is nsTraceMalloc.c/bloatblame.c code, released
* April 19, 2000.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brendan Eich, 14-April-2000
* L. David Baron, 2001-06-07, created leakstats.c based on bloatblame.c
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern int getopt(int argc, char *const *argv, const char *shortopts);
extern char *optarg;
extern int optind;
#ifdef XP_WIN32
int optind=1;
#endif
#endif
#include <time.h>
#include "nsTraceMalloc.h"
#include "tmreader.h"
#include "prlog.h"
static char *program;
typedef struct handler_data {
uint32 current_heapsize;
uint32 max_heapsize;
uint32 bytes_allocated;
uint32 current_allocations;
uint32 total_allocations;
uint32 unmatched_frees;
int finished;
} handler_data;
static void handler_data_init(handler_data *data)
{
data->current_heapsize = 0;
data->max_heapsize = 0;
data->bytes_allocated = 0;
data->current_allocations = 0;
data->total_allocations = 0;
data->unmatched_frees = 0;
data->finished = 0;
}
static void handler_data_finish(handler_data *data)
{
}
static void my_tmevent_handler(tmreader *tmr, tmevent *event)
{
handler_data *data = (handler_data*) tmr->data;
switch (event->type) {
case TM_EVENT_REALLOC:
/* On Windows, original allocation could be before we overrode malloc */
if (event->u.alloc.oldserial != 0) {
data->current_heapsize -= event->u.alloc.oldsize;
--data->current_allocations;
} else {
++data->unmatched_frees;
PR_ASSERT(event->u.alloc.oldsize == 0);
}
/* fall-through intentional */
case TM_EVENT_MALLOC:
case TM_EVENT_CALLOC:
++data->current_allocations;
++data->total_allocations;
data->bytes_allocated += event->u.alloc.size;
data->current_heapsize += event->u.alloc.size;
if (data->current_heapsize > data->max_heapsize)
data->max_heapsize = data->current_heapsize;
break;
case TM_EVENT_FREE:
/* On Windows, original allocation could be before we overrode malloc */
if (event->serial != 0) {
--data->current_allocations;
data->current_heapsize -= event->u.alloc.size;
} else {
++data->unmatched_frees;
PR_ASSERT(event->u.alloc.size == 0);
}
break;
case TM_EVENT_STATS:
data->finished = 1;
break;
}
}
int main(int argc, char **argv)
{
int i, j, rv;
tmreader *tmr;
FILE *fp;
time_t start;
handler_data data;
program = *argv;
handler_data_init(&data);
tmr = tmreader_new(program, &data);
if (!tmr) {
perror(program);
exit(1);
}
start = time(NULL);
fprintf(stdout, "%s starting at %s", program, ctime(&start));
fflush(stdout);
argc -= optind;
argv += optind;
if (argc == 0) {
if (tmreader_eventloop(tmr, "-", my_tmevent_handler) <= 0)
exit(1);
} else {
for (i = j = 0; i < argc; i++) {
fp = fopen(argv[i], "r");
if (!fp) {
fprintf(stderr, "%s: can't open %s: %s\n",
program, argv[i], strerror(errno));
exit(1);
}
rv = tmreader_eventloop(tmr, argv[i], my_tmevent_handler);
if (rv < 0)
exit(1);
if (rv > 0)
j++;
fclose(fp);
}
if (j == 0)
exit(1);
}
if (!data.finished) {
fprintf(stderr, "%s: log file incomplete\n", program);
exit(1);
}
fprintf(stdout,
"Leaks: %u bytes, %u allocations\n"
"Maximum Heap Size: %u bytes\n"
"%u bytes were allocated in %u allocations.\n",
data.current_heapsize, data.current_allocations,
data.max_heapsize,
data.bytes_allocated, data.total_allocations);
if (data.unmatched_frees != 0)
fprintf(stdout,
"Logged %u free (or realloc) calls for which we missed the "
"original malloc.\n",
data.unmatched_frees);
handler_data_finish(&data);
tmreader_destroy(tmr);
exit(0);
}