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- /* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2000-2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- #ifndef APR_ALLOCATOR_H
- #define APR_ALLOCATOR_H
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /**
- * @file apr_allocator.h
- * @brief APR memory allocation
- *
- */
- /**
- * @defgroup APR_Pool_allocator Allocator
- * @ingroup APR_Pool
- * @{
- */
-
-
- #include "apr.h"
- #include "apr_errno.h"
- #define APR_WANT_MEMFUNC
- #include "apr_want.h"
-
- /** the allocator structure */
- typedef struct apr_allocator_t apr_allocator_t;
- /** the structure which holds information about the allocation */
- typedef struct apr_memnode_t apr_memnode_t;
-
- struct apr_memnode_t {
- apr_memnode_t *next;
- apr_memnode_t **ref;
- apr_uint32_t index;
- apr_uint32_t free_index;
- char *first_avail;
- char *endp;
- };
-
- #define APR_MEMNODE_T_SIZE APR_ALIGN_DEFAULT(sizeof(apr_memnode_t))
-
- /**
- * Create a new allocator
- * @param allocator The allocator we have just created.
- *
- */
- APR_DECLARE(apr_status_t) apr_allocator_create(apr_allocator_t **allocator);
-
- /**
- * Destroy an allocator
- * @param allocator The allocator to be destroyed
- * @remark Any memnodes not given back to the allocator prior to destroying
- * will _not_ be free()d.
- */
- APR_DECLARE(void) apr_allocator_destroy(apr_allocator_t *allocator);
-
- /**
- * Allocate a block of mem from the allocator
- * @param allocator The allocator to allocate from
- * @param size The size of the mem to allocate (excluding the
- * memnode structure)
- */
- /*
- * XXX: Move this to a private header file
- */
- APR_DECLARE(apr_memnode_t *) apr_allocator_alloc(apr_allocator_t *allocator,
- apr_size_t size);
-
- /**
- * Free a block of mem, giving it back to the allocator
- * @param allocator The allocator to give the mem back to
- * @param memnode The memory node to return
- */
- /*
- * XXX: Move this to a private header file
- */
- APR_DECLARE(void) apr_allocator_free(apr_allocator_t *allocator,
- apr_memnode_t *memnode);
-
-
- #include "apr_pools.h"
-
- /**
- * Set the owner of the allocator
- * @param allocator The allocator to set the owner for
- * @param pool The pool that is to own the allocator
- * @remark Typically pool is the highest level pool using the allocator
- */
- /*
- * XXX: see if we can come up with something a bit better. Currently
- * you can make a pool an owner, but if the pool doesn't use the allocator
- * the allocator will never be destroyed.
- */
- APR_DECLARE(void) apr_allocator_owner_set(apr_allocator_t *allocator,
- apr_pool_t *pool);
-
- /** @deprecated @see apr_allocator_owner_set */
- APR_DECLARE(void) apr_allocator_set_owner(apr_allocator_t *allocator,
- apr_pool_t *pool);
-
- /**
- * Get the current owner of the allocator
- * @param allocator The allocator to get the owner from
- */
- APR_DECLARE(apr_pool_t *) apr_allocator_owner_get(apr_allocator_t *allocator);
-
- /** @deprecated @see apr_allocator_owner_get */
- APR_DECLARE(apr_pool_t *) apr_allocator_get_owner(
- apr_allocator_t *allocator);
-
- /**
- * Set the current threshold at which the allocator should start
- * giving blocks back to the system.
- * @param allocator The allocator the set the threshold on
- * @param size The threshold. 0 == unlimited.
- */
- APR_DECLARE(void) apr_allocator_max_free_set(apr_allocator_t *allocator,
- apr_size_t size);
-
- /** @deprecated @see apr_allocator_max_free_set */
- APR_DECLARE(void) apr_allocator_set_max_free(apr_allocator_t *allocator,
- apr_size_t size);
-
- #include "apr_thread_mutex.h"
-
- #if APR_HAS_THREADS
- /**
- * Set a mutex for the allocator to use
- * @param allocator The allocator to set the mutex for
- * @param mutex The mutex
- */
- APR_DECLARE(void) apr_allocator_mutex_set(apr_allocator_t *allocator,
- apr_thread_mutex_t *mutex);
-
- /** @deprecated @see apr_allocator_mutex_set */
- APR_DECLARE(void) apr_allocator_set_mutex(apr_allocator_t *allocator,
- apr_thread_mutex_t *mutex);
-
- /**
- * Get the mutex currently set for the allocator
- * @param allocator The allocator
- */
- APR_DECLARE(apr_thread_mutex_t *) apr_allocator_mutex_get(
- apr_allocator_t *allocator);
-
- /** @deprecated @see apr_allocator_mutex_get */
- APR_DECLARE(apr_thread_mutex_t *) apr_allocator_get_mutex(
- apr_allocator_t *allocator);
-
- #endif /* APR_HAS_THREADS */
-
- /** @} */
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* !APR_ALLOCATOR_H */
-