1 /* Memory handling for libdw.
2 Copyright (C) 2003, 2004 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2003.
4
5 This program is Open Source software; you can redistribute it and/or
6 modify it under the terms of the Open Software License version 1.0 as
7 published by the Open Source Initiative.
8
9 You should have received a copy of the Open Software License along
10 with this program; if not, you may obtain a copy of the Open Software
11 License version 1.0 from http://www.opensource.org/licenses/osl.php or
12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
13 3001 King Ranch Road, Ukiah, CA 95482. */
14
15 #ifdef HAVE_CONFIG_H
16 # include <config.h>
17 #endif
18
19 #include <error.h>
20 #include <errno.h>
21 #include <stdlib.h>
22 #include <sys/param.h>
23 #include "libdwP.h"
24
25
26 void *
__libdw_allocate(Dwarf * dbg,size_t minsize)27 __libdw_allocate (Dwarf *dbg, size_t minsize)
28 {
29 size_t size = MAX (dbg->mem_default_size,
30 2 * minsize + offsetof (struct libdw_memblock, mem));
31 struct libdw_memblock *newp = malloc (size);
32 if (newp == NULL)
33 dbg->oom_handler ();
34
35 newp->size = newp->remaining = size - offsetof (struct libdw_memblock, mem);
36
37 newp->prev = dbg->mem_tail;
38 dbg->mem_tail = newp;
39
40 return newp->mem;
41 }
42
43
44 Dwarf_OOM
dwarf_new_oom_handler(Dwarf * dbg,Dwarf_OOM handler)45 dwarf_new_oom_handler (Dwarf *dbg, Dwarf_OOM handler)
46 {
47 Dwarf_OOM old = dbg->oom_handler;
48 dbg->oom_handler = handler;
49 return old;
50 }
51
52
53 void
54 __attribute ((noreturn, visibility ("hidden")))
__libdw_oom(void)55 __libdw_oom (void)
56 {
57 while (1)
58 error (EXIT_FAILURE, ENOMEM, "libdw");
59 }
60