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glibc/malloc/tst-mtrace.c
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/* Test program for mtrace. | |
Copyright (C) 2000-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <mcheck.h> | |
#include <paths.h> | |
#include <search.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
static void print (const void *node, VISIT value, int level); | |
/* Used for several purposes. */ | |
static FILE *fp; | |
static int | |
do_test (void) | |
{ | |
void *root = NULL; | |
size_t linelen = 0; | |
char *line = NULL; | |
/* Enable memory usage tracing. */ | |
mtrace (); | |
/* Perform some operations which definitely will allocate some | |
memory. */ | |
fp = fopen (__FILE__, "r"); | |
if (fp == NULL) | |
/* Shouldn't happen since this program is executed in the source | |
directory. */ | |
abort (); | |
while (!feof (fp)) | |
{ | |
char **p; | |
char *copy; | |
ssize_t n = getline (&line, &linelen, fp); | |
if (n < 0) | |
break; | |
if (n == 0) | |
continue; | |
copy = strdup (line); | |
if (copy == NULL) | |
abort (); | |
p = (char **) tsearch (copy, &root, | |
(int (*)(const void *, const void *))strcmp); | |
if (*p != copy) | |
/* This line wasn't added. */ | |
free (copy); | |
} | |
fclose (fp); | |
fp = fopen (_PATH_DEVNULL, "w"); | |
if (fp != NULL) | |
{ | |
/* Write something through stdout. */ | |
twalk (root, print); | |
fclose (fp); | |
} | |
/* Free everything. */ | |
tdestroy (root, free); | |
/* Also the line buffer. */ | |
free (line); | |
/* That's it. */ | |
return 0; | |
} | |
static void | |
print (const void *node, VISIT value, int level) | |
{ | |
static int cnt; | |
if (value == postorder || value == leaf) | |
fprintf (fp, "%3d: %s", ++cnt, *(const char **) node); | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |