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glibc  2.9
Functions | Variables
tst-mtrace.c File Reference
#include <mcheck.h>
#include <paths.h>
#include <search.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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Functions

static void print (const void *node, VISIT value, int level)
int main (void)

Variables

static FILEfp

Function Documentation

int main ( void  )

Definition at line 35 of file tst-mtrace.c.

{
  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;
}

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static void print ( const void *  node,
VISIT  value,
int  level 
) [static]

Definition at line 98 of file tst-mtrace.c.

{
  static int cnt;
  if (value == postorder || value == leaf)
    fprintf (fp, "%3d: %s", ++cnt, *(const char **) node);
}

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Variable Documentation

FILE* fp [static]

Definition at line 31 of file tst-mtrace.c.