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103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/* Test program for mtrace.
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Copyright (C) 2000-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <mcheck.h>
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#include <paths.h>
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#include <search.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static void print (const void *node, VISIT value, int level);
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/* Used for several purposes. */
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static FILE *fp;
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int
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main (void)
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{
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void *root = NULL;
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size_t linelen = 0;
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char *line = NULL;
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/* Enable memory usage tracing. */
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mtrace ();
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/* Perform some operations which definitely will allocate some
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memory. */
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fp = fopen (__FILE__, "r");
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if (fp == NULL)
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/* Shouldn't happen since this program is executed in the source
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directory. */
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abort ();
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while (!feof (fp))
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{
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char **p;
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char *copy;
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ssize_t n = getline (&line, &linelen, fp);
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if (n < 0)
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break;
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if (n == 0)
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continue;
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copy = strdup (line);
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if (copy == NULL)
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abort ();
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p = (char **) tsearch (copy, &root,
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(int (*) (const void *, const void *)) strcmp);
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if (*p != copy)
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/* This line wasn't added. */
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free (copy);
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}
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fclose (fp);
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fp = fopen (_PATH_DEVNULL, "w");
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if (fp != NULL)
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{
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/* Write something through stdout. */
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twalk (root, print);
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fclose (fp);
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}
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/* Free everything. */
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tdestroy (root, free);
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/* Also the line buffer. */
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free (line);
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/* That's it. */
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return 0;
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}
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static void
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print (const void *node, VISIT value, int level)
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{
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static int cnt;
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if (value == postorder || value == leaf)
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fprintf (fp, "%3d: %s", ++cnt, *(const char **) node);
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}
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