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.
27 #include "pbd/pthread_utils.h"
29 int (*pbd_alloc_allowed) () = 0;
31 /** Thread-local key whose value is set to 1 if malloc checking is disabled
32 * for this thread, 0 otherwise.
35 static pthread_key_t disabled;
37 static pthread_once_t once;
42 (void) pthread_key_create (&disabled, NULL);
45 /** This is our malloc which overrides the system one */
46 void* malloc (size_t s)
48 static void * (*real_malloc) (size_t) = NULL;
50 /* find the system malloc */
51 real_malloc = dlsym (RTLD_NEXT, "malloc");
54 (void) pthread_once (&once, make_key);
56 if (pthread_getspecific (disabled) == NULL && pbd_alloc_allowed && !pbd_alloc_allowed ()) {
57 /* pbd_alloc_allowed says that this malloc is not permitted */
61 /* Pass through to the system malloc */
62 return real_malloc (s);
66 suspend_rt_malloc_checks ()
68 (void) pthread_once (&once, make_key);
69 pthread_setspecific (disabled, (void *) 1);
73 resume_rt_malloc_checks ()
75 (void) pthread_once (&once, make_key);
76 pthread_setspecific (disabled, (void *) 0);