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📁 ..
📄 apr-x86_64.h(17.91 KB)
📄 apr.h(636 B)
📄 apr_allocator.h(6.07 KB)
📄 apr_anylock.h(4.93 KB)
📄 apr_atomic.h(6.04 KB)
📄 apr_base64.h(3.75 KB)
📄 apr_buckets.h(63.15 KB)
📄 apr_crypto.h(19.68 KB)
📄 apr_cstr.h(11.13 KB)
📄 apr_date.h(3.47 KB)
📄 apr_dbd.h(23.35 KB)
📄 apr_dbm.h(8.4 KB)
📄 apr_dso.h(2.64 KB)
📄 apr_encode.h(30.35 KB)
📄 apr_env.h(2.06 KB)
📄 apr_errno.h(53.77 KB)
📄 apr_escape.h(17.23 KB)
📄 apr_file_info.h(17.17 KB)
📄 apr_file_io.h(42.88 KB)
📄 apr_fnmatch.h(6.08 KB)
📄 apr_general.h(7.34 KB)
📄 apr_getopt.h(5.84 KB)
📄 apr_global_mutex.h(7.19 KB)
📄 apr_hash.h(10.08 KB)
📄 apr_hooks.h(12.36 KB)
📄 apr_inherit.h(2.09 KB)
📄 apr_ldap.h(5.57 KB)
📄 apr_ldap_init.h(5.64 KB)
📄 apr_ldap_option.h(8.4 KB)
📄 apr_ldap_rebind.h(3.09 KB)
📄 apr_ldap_url.h(3.71 KB)
📄 apr_lib.h(8.23 KB)
📄 apr_md4.h(4.42 KB)
📄 apr_md5.h(6.2 KB)
📄 apr_memcache.h(16.82 KB)
📄 apr_mmap.h(5.01 KB)
📄 apr_network_io.h(36.02 KB)
📄 apr_optional.h(2.71 KB)
📄 apr_optional_hooks.h(3.78 KB)
📄 apr_perms_set.h(1.86 KB)
📄 apr_poll.h(20.6 KB)
📄 apr_pools.h(30.94 KB)
📄 apr_portable.h(20.02 KB)
📄 apr_proc_mutex.h(6.85 KB)
📄 apr_queue.h(3.98 KB)
📄 apr_random.h(4.92 KB)
📄 apr_redis.h(15.62 KB)
📄 apr_reslist.h(7.01 KB)
📄 apr_ring.h(18.78 KB)
📄 apr_rmm.h(4.67 KB)
📄 apr_sdbm.h(5.97 KB)
📄 apr_sha1.h(3.79 KB)
📄 apr_shm.h(9.26 KB)
📄 apr_signal.h(2.7 KB)
📄 apr_siphash.h(6.01 KB)
📄 apr_skiplist.h(14.19 KB)
📄 apr_strings.h(14.55 KB)
📄 apr_strmatch.h(2.61 KB)
📄 apr_support.h(1.6 KB)
📄 apr_tables.h(18.9 KB)
📄 apr_thread_cond.h(5.4 KB)
📄 apr_thread_mutex.h(4.39 KB)
📄 apr_thread_pool.h(10.84 KB)
📄 apr_thread_proc.h(36.8 KB)
📄 apr_thread_rwlock.h(4.65 KB)
📄 apr_time.h(7.39 KB)
📄 apr_uri.h(6.43 KB)
📄 apr_user.h(5.19 KB)
📄 apr_uuid.h(2.05 KB)
📄 apr_version.h(5.22 KB)
📄 apr_want.h(2.89 KB)
📄 apr_xlate.h(6.26 KB)
📄 apr_xml.h(12.19 KB)
📄 apu.h(4.22 KB)
📄 apu_errno.h(5.32 KB)
📄 apu_version.h(4.2 KB)
📄 apu_want.h(1.45 KB)

Editing: apr_reslist.h

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef APR_RESLIST_H
#define APR_RESLIST_H

/** 
 * @file apr_reslist.h
 * @brief APR-UTIL Resource List Routines
 */

#include "apr.h"
#include "apu.h"
#include "apr_pools.h"
#include "apr_errno.h"
#include "apr_time.h"

/**
 * @defgroup APR_Util_RL Resource List Routines
 * @ingroup APR_Util
 * @{
 */

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/** Opaque resource list object */
typedef struct apr_reslist_t apr_reslist_t;

/* Generic constructor called by resource list when it needs to create a
 * resource.
 * @param resource opaque resource
 * @param params flags
 * @param pool  Pool
 */
typedef apr_status_t (*apr_reslist_constructor)(void **resource, void *params,
                                                apr_pool_t *pool);

/* Generic destructor called by resource list when it needs to destroy a
 * resource.
 * @param resource opaque resource
 * @param params flags
 * @param pool  Pool
 */
typedef apr_status_t (*apr_reslist_destructor)(void *resource, void *params,
                                               apr_pool_t *pool);

/* Cleanup order modes */
#define APR_RESLIST_CLEANUP_DEFAULT  0       /**< default pool cleanup */
#define APR_RESLIST_CLEANUP_FIRST    1       /**< use pool pre cleanup */

/**
 * Create a new resource list with the following parameters:
 * @param reslist An address where the pointer to the new resource
 *                list will be stored.
 * @param min Allowed minimum number of available resources. Zero
 *            creates new resources only when needed.
 * @param smax Resources will be destroyed during reslist maintenance to
 *             meet this maximum restriction as they expire (reach their ttl).
 * @param hmax Absolute maximum limit on the number of total resources.
 * @param ttl If non-zero, sets the maximum amount of time in microseconds an
 *            unused resource is valid.  Any resource which has exceeded this
 *            time will be destroyed, either when encountered by
 *            apr_reslist_acquire() or during reslist maintenance.
 * @param con Constructor routine that is called to create a new resource.
 * @param de Destructor routine that is called to destroy an expired resource.
 * @param params Passed to constructor and deconstructor
 * @param pool The pool from which to create this resource list. Also the
 *             same pool that is passed to the constructor and destructor
 *             routines.
 * @remark If APR has been compiled without thread support, hmax will be
 *         automatically set to 1 and values of min and smax will be forced to
 *         1 for any non-zero value.
 */
APU_DECLARE(apr_status_t) apr_reslist_create(apr_reslist_t **reslist,
                                             int min, int smax, int hmax,
                                             apr_interval_time_t ttl,
                                             apr_reslist_constructor con,
                                             apr_reslist_destructor de,
                                             void *params,
                                             apr_pool_t *pool);

/**
 * Destroy the given resource list and all resources controlled by
 * this list.
 * FIXME: Should this block until all resources become available,
 *        or maybe just destroy all the free ones, or maybe destroy
 *        them even though they might be in use by something else?
 *        Currently it will abort if there are resources that haven't
 *        been released, so there is an assumption that all resources
 *        have been released to the list before calling this function.
 * @param reslist The reslist to destroy
 */
APU_DECLARE(apr_status_t) apr_reslist_destroy(apr_reslist_t *reslist);

/**
 * Retrieve a resource from the list, creating a new one if necessary.
 * If we have met our maximum number of resources, we will block
 * until one becomes available.
 * @param reslist The resource list.
 * @param resource An address where the pointer to the resource
 *                will be stored.
 */
APU_DECLARE(apr_status_t) apr_reslist_acquire(apr_reslist_t *reslist,
                                              void **resource);

/**
 * Return a resource back to the list of available resources.
 * @param reslist The resource list.
 * @param resource The resource to return to the list.
 */
APU_DECLARE(apr_status_t) apr_reslist_release(apr_reslist_t *reslist,
                                              void *resource);

/**
 * Set the timeout the acquire will wait for a free resource
 * when the maximum number of resources is exceeded.
 * @param reslist The resource list.
 * @param timeout Timeout to wait. The zero waits forever.
 */
APU_DECLARE(void) apr_reslist_timeout_set(apr_reslist_t *reslist,
                                          apr_interval_time_t timeout);

/**
 * Return the number of outstanding resources.
 * @param reslist The resource list.
 */
APU_DECLARE(apr_uint32_t) apr_reslist_acquired_count(apr_reslist_t *reslist);

/**
 * Invalidate a resource in the pool - e.g. a database connection
 * that returns a "lost connection" error and can't be restored.
 * Use this instead of apr_reslist_release if the resource is bad.
 * @param reslist The resource list.
 * @param resource The resource to invalidate.
 */
APU_DECLARE(apr_status_t) apr_reslist_invalidate(apr_reslist_t *reslist,
                                                 void *resource);

/**
 * Perform routine maintenance on the resource list. This call
 * may instantiate new resources or expire old resources.
 * @param reslist The resource list.
 */
APU_DECLARE(apr_status_t) apr_reslist_maintain(apr_reslist_t *reslist);

/**
 * Set reslist cleanup order.
 * @param reslist The resource list.
 * @param mode Cleanup order mode
 * <PRE>
 *           APR_RESLIST_CLEANUP_DEFAULT  default pool cleanup order
 *           APR_RESLIST_CLEANUP_FIRST    use pool pre cleanup
 * </PRE>
 * @remark If APR_RESLIST_CLEANUP_FIRST is used the destructors will
 * be called before child pools of the pool used to create the reslist
 * are destroyed. This allows to explicitly destroy the child pools
 * inside reslist destructors.
 */
APU_DECLARE(void) apr_reslist_cleanup_order_set(apr_reslist_t *reslist,
                                                apr_uint32_t mode);

#ifdef __cplusplus
}
#endif

/** @} */

#endif  /* ! APR_RESLIST_H */

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