| /* $Id$ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include <pj/pool.h> |
| #include <pj/except.h> |
| #include <pj/os.h> |
| #include <pj/compat/malloc.h> |
| |
| #if !PJ_HAS_POOL_ALT_API |
| |
| /* |
| * This file contains pool default policy definition and implementation. |
| */ |
| #include "pool_signature.h" |
| |
| |
| static void *default_block_alloc(pj_pool_factory *factory, pj_size_t size) |
| { |
| void *p; |
| |
| PJ_CHECK_STACK(); |
| |
| if (factory->on_block_alloc) { |
| int rc; |
| rc = factory->on_block_alloc(factory, size); |
| if (!rc) |
| return NULL; |
| } |
| |
| p = malloc(size+(SIG_SIZE << 1)); |
| |
| if (p == NULL) { |
| if (factory->on_block_free) |
| factory->on_block_free(factory, size); |
| } else { |
| /* Apply signature when PJ_SAFE_POOL is set. It will move |
| * "p" pointer forward. |
| */ |
| APPLY_SIG(p, size); |
| } |
| |
| return p; |
| } |
| |
| static void default_block_free(pj_pool_factory *factory, void *mem, |
| pj_size_t size) |
| { |
| PJ_CHECK_STACK(); |
| |
| if (factory->on_block_free) |
| factory->on_block_free(factory, size); |
| |
| /* Check and remove signature when PJ_SAFE_POOL is set. It will |
| * move "mem" pointer backward. |
| */ |
| REMOVE_SIG(mem, size); |
| |
| /* Note that when PJ_SAFE_POOL is set, the actual size of the block |
| * is size + SIG_SIZE*2. |
| */ |
| |
| free(mem); |
| } |
| |
| static void default_pool_callback(pj_pool_t *pool, pj_size_t size) |
| { |
| PJ_CHECK_STACK(); |
| PJ_UNUSED_ARG(pool); |
| PJ_UNUSED_ARG(size); |
| |
| PJ_THROW(PJ_NO_MEMORY_EXCEPTION); |
| } |
| |
| PJ_DEF_DATA(pj_pool_factory_policy) pj_pool_factory_default_policy = |
| { |
| &default_block_alloc, |
| &default_block_free, |
| &default_pool_callback, |
| 0 |
| }; |
| |
| PJ_DEF(const pj_pool_factory_policy*) pj_pool_factory_get_default_policy(void) |
| { |
| return &pj_pool_factory_default_policy; |
| } |
| |
| |
| #endif /* PJ_HAS_POOL_ALT_API */ |