| Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pj/pool.h> |
| 21 | #include <pj/except.h> |
| 22 | #include <pj/os.h> |
| 23 | |
| 24 | #if !PJ_HAS_POOL_ALT_API |
| 25 | |
| 26 | /* |
| 27 | * This file contains pool default policy definition and implementation. |
| 28 | */ |
| 29 | #include "pool_signature.h" |
| 30 | |
| 31 | |
| 32 | static void *operator_new(pj_pool_factory *factory, pj_size_t size) |
| 33 | { |
| 34 | void *mem; |
| 35 | |
| 36 | PJ_CHECK_STACK(); |
| 37 | |
| 38 | if (factory->on_block_alloc) { |
| 39 | int rc; |
| 40 | rc = factory->on_block_alloc(factory, size); |
| 41 | if (!rc) |
| 42 | return NULL; |
| 43 | } |
| 44 | |
| 45 | mem = (void*) new char[size+(SIG_SIZE << 1)]; |
| 46 | |
| 47 | /* Exception for new operator may be disabled, so.. */ |
| 48 | if (mem) { |
| 49 | /* Apply signature when PJ_SAFE_POOL is set. It will move |
| 50 | * "mem" pointer forward. |
| 51 | */ |
| 52 | APPLY_SIG(mem, size); |
| 53 | } |
| 54 | |
| 55 | return mem; |
| 56 | } |
| 57 | |
| 58 | static void operator_delete(pj_pool_factory *factory, void *mem, pj_size_t size) |
| 59 | { |
| 60 | PJ_CHECK_STACK(); |
| 61 | |
| 62 | if (factory->on_block_free) |
| 63 | factory->on_block_free(factory, size); |
| 64 | |
| 65 | /* Check and remove signature when PJ_SAFE_POOL is set. It will |
| 66 | * move "mem" pointer backward. |
| 67 | */ |
| 68 | REMOVE_SIG(mem, size); |
| 69 | |
| 70 | /* Note that when PJ_SAFE_POOL is set, the actual size of the block |
| 71 | * is size + SIG_SIZE*2. |
| 72 | */ |
| 73 | |
| 74 | char *p = (char*)mem; |
| 75 | delete [] p; |
| 76 | } |
| 77 | |
| 78 | static void default_pool_callback(pj_pool_t *pool, pj_size_t size) |
| 79 | { |
| 80 | PJ_CHECK_STACK(); |
| 81 | PJ_UNUSED_ARG(pool); |
| 82 | PJ_UNUSED_ARG(size); |
| 83 | |
| 84 | PJ_THROW(PJ_NO_MEMORY_EXCEPTION); |
| 85 | } |
| 86 | |
| 87 | PJ_DEF_DATA(pj_pool_factory_policy) pj_pool_factory_default_policy = |
| 88 | { |
| 89 | &operator_new, |
| 90 | &operator_delete, |
| 91 | &default_pool_callback, |
| 92 | 0 |
| 93 | }; |
| 94 | |
| 95 | PJ_DEF(const pj_pool_factory_policy*) pj_pool_factory_get_default_policy(void) |
| 96 | { |
| 97 | return &pj_pool_factory_default_policy; |
| 98 | } |
| 99 | |
| 100 | |
| 101 | #endif /* PJ_HAS_POOL_ALT_API */ |
| 102 | |