Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 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 * |
| 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 |
| 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"))) |
| 55 | __libdw_oom (void) |
| 56 | { |
| 57 | while (1) |
| 58 | error (EXIT_FAILURE, ENOMEM, "libdw"); |
| 59 | } |