1/* mtrace API for `malloc'.
2 Copyright (C) 1991-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written April 2, 1991 by John Gilmore of Cygnus Support.
5 Based on mcheck.c by Mike Haertel.
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <https://www.gnu.org/licenses/>. */
20
21#if !IS_IN (libc)
22# include "mtrace-impl.c"
23#else
24# include <shlib-compat.h>
25# include <libc-symbols.h>
26#endif
27
28#if IS_IN (libc) && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_34)
29/* Compatibility symbols that were introduced to help break at allocation sites
30 for specific memory allocations. This is unusable with ASLR, although gdb
31 may allow predictable allocation addresses. Even then, gdb has watchpoint
32 and conditional breakpoint support which should provide the same
33 functionality without having this kludge. These symbols are preserved in
34 case some applications ended up linking against them but they don't actually
35 do anything anymore; not that they did much before anyway. */
36
37void *mallwatch;
38compat_symbol (libc, mallwatch, mallwatch, GLIBC_2_0);
39
40void
41tr_break (void)
42{
43}
44compat_symbol (libc, tr_break, tr_break, GLIBC_2_0);
45#endif
46
47
48void
49mtrace (void)
50{
51#if !IS_IN (libc)
52 do_mtrace ();
53#endif
54}
55
56void
57muntrace (void)
58{
59#if !IS_IN (libc)
60 do_muntrace ();
61#endif
62}
63