2 Copyright (C) 2011 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 int (*pbd_alloc_allowed
) () = 0;
30 /** Thread-local key whose value is set to 1 if malloc checking is disabled
31 * for this thread, 0 otherwise.
34 static pthread_key_t disabled
;
36 static pthread_once_t once
;
41 (void) pthread_key_create (&disabled
, NULL
);
44 /** This is our malloc which overrides the system one */
45 void* malloc (size_t s
)
47 static void * (*real_malloc
) (size_t) = NULL
;
49 /* find the system malloc */
50 real_malloc
= dlsym (RTLD_NEXT
, "malloc");
53 (void) pthread_once (&once
, make_key
);
55 if (pthread_getspecific (disabled
) == NULL
&& pbd_alloc_allowed
&& !pbd_alloc_allowed ()) {
56 /* pbd_alloc_allowed says that this malloc is not permitted */
60 /* Pass through to the system malloc */
61 return real_malloc (s
);
65 suspend_rt_malloc_checks ()
67 (void) pthread_once (&once
, make_key
);
68 pthread_setspecific (disabled
, (void *) 1);
72 resume_rt_malloc_checks ()
74 (void) pthread_once (&once
, make_key
);
75 pthread_setspecific (disabled
, (void *) 0);