1/* trace.c - tracing functions for malloc */
2
3/* Copyright (C) 2001-2003 Free Software Foundation, Inc.
4
5   This file is part of GNU Bash, the Bourne Again SHell.
6
7   Bash is free software; you can redistribute it and/or modify it under
8   the terms of the GNU General Public License as published by the Free
9   Software Foundation; either version 2, or (at your option) any later
10   version.
11
12   Bash is distributed in the hope that it will be useful, but WITHOUT ANY
13   WARRANTY; without even the implied warranty of MERCHANTABILITY or
14   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15   for more details.
16
17   You should have received a copy of the GNU General Public License along
18   with Bash; see the file COPYING.  If not, write to the Free Software
19   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
20#ifdef HAVE_CONFIG_H
21#  include <config.h>
22#endif
23
24#include <stdio.h>
25#ifdef HAVE_UNISTD_H
26#  include <unistd.h>
27#endif
28
29#include "imalloc.h"
30
31extern int malloc_trace;
32
33static int _mtrace_verbose = 0;
34
35#ifdef MALLOC_TRACE
36
37extern FILE *_imalloc_fopen __P((char *, char *, char *, char *, size_t));
38
39FILE *_mtrace_fp = NULL;
40extern char _malloc_trace_buckets[];
41
42void
43mtrace_alloc (tag, mem, size, file, line)
44     const char *tag;
45     PTR_T mem;
46     size_t size;
47     const char *file;
48     int line;
49{
50  if (_mtrace_fp == NULL)
51    _mtrace_fp = stderr;
52
53  if (_mtrace_verbose)
54    fprintf (_mtrace_fp, "alloc: %s: %p (%d bytes) from '%s:%d'\n",
55		tag, mem, size, file ? file : "unknown", line);
56  else
57    fprintf (_mtrace_fp, "alloc:%p:%d:%s:%d\n",
58		mem, size, file ? file : "unknown", line);
59}
60
61void
62mtrace_free (mem, size, file, line)
63     PTR_T mem;
64     int size;
65     const char *file;
66     int line;
67{
68  if (_mtrace_fp == NULL)
69    _mtrace_fp = stderr;
70
71  if (_mtrace_verbose)
72    fprintf (_mtrace_fp, "free: %p (%d bytes) from '%s:%d'\n",
73		mem, size, file ? file : "unknown", line);
74  else
75    fprintf (_mtrace_fp, "free:%p:%d:%s:%d\n",
76		mem, size, file ? file : "unknown", line);
77}
78#endif /* MALLOC_TRACE */
79
80int
81malloc_set_trace (n)
82     int n;
83{
84  int old;
85
86  old = malloc_trace;
87  malloc_trace = n;
88  _mtrace_verbose = (n > 1);
89  return old;
90}
91
92void
93malloc_set_tracefp (fp)
94     FILE *fp;
95{
96#ifdef MALLOC_TRACE
97  _mtrace_fp = fp ? fp : stderr;
98#endif
99}
100
101void
102malloc_trace_bin (n)
103     int n;
104{
105#ifdef MALLOC_TRACE
106  _malloc_trace_buckets[n] = 1;
107#endif
108}
109
110#define TRACEROOT "/var/tmp/maltrace/trace."
111
112void
113malloc_set_tracefn (s, fn)
114     char *s;
115     char *fn;
116{
117#ifdef MALLOC_TRACE
118  FILE *fp;
119  char defname[sizeof (TRACEROOT) + 64];
120
121  fp = _imalloc_fopen (s, fn, TRACEROOT, defname, sizeof (defname));
122  if (fp)
123    malloc_set_tracefp (fp);
124#endif
125}
126