diff options
Diffstat (limited to 'pjlib/src/pj/pool_policy_malloc.c')
-rw-r--r-- | pjlib/src/pj/pool_policy_malloc.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/pjlib/src/pj/pool_policy_malloc.c b/pjlib/src/pj/pool_policy_malloc.c new file mode 100644 index 0000000..6bba91d --- /dev/null +++ b/pjlib/src/pj/pool_policy_malloc.c @@ -0,0 +1,104 @@ +/* $Id: pool_policy_malloc.c 3553 2011-05-05 06:14:19Z nanang $ */ +/* + * 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 */ |