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* root_pools.c : Implement svn_root_pools__* API
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* ====================================================================
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#include "svn_pools.h"
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#include "private/svn_subr_private.h"
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#include "private/svn_mutex.h"
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struct svn_root_pools__t
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* Use MUTEX to serialize access to this collection.
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apr_array_header_t *unused_pools;
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/* Mutex to serialize access to UNUSED_POOLS */
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svn_root_pools__create(svn_root_pools__t **pools)
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/* the collection of root pools must be managed independently from
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= apr_allocator_owner_get(svn_pool_create_allocator(FALSE));
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/* construct result object */
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svn_root_pools__t *result = apr_pcalloc(pool, sizeof(*result));
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SVN_ERR(svn_mutex__init(&result->mutex, TRUE, pool));
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result->unused_pools = apr_array_make(pool, 16, sizeof(apr_pool_t *));
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/* Return a currently unused connection pool in *POOL. If no such pool
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* exists, create a new root pool and return that in *POOL.
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acquire_pool_internal(apr_pool_t **pool,
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svn_root_pools__t *pools)
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SVN_ERR(svn_mutex__lock(pools->mutex));
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*pool = pools->unused_pools->nelts
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? *(apr_pool_t **)apr_array_pop(pools->unused_pools)
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: apr_allocator_owner_get(svn_pool_create_allocator(FALSE));
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SVN_ERR(svn_mutex__unlock(pools->mutex, SVN_NO_ERROR));
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svn_root_pools__acquire_pool(svn_root_pools__t *pools)
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svn_error_t *err = acquire_pool_internal(&pool, pools);
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/* Mutex failure?! Well, try to continue with unrecycled data. */
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pool = apr_allocator_owner_get(svn_pool_create_allocator(FALSE));
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svn_root_pools__release_pool(apr_pool_t *pool,
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svn_root_pools__t *pools)
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err = svn_mutex__lock(pools->mutex);
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svn_error_clear(err);
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svn_pool_destroy(pool);
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APR_ARRAY_PUSH(pools->unused_pools, apr_pool_t *) = pool;
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svn_error_clear(svn_mutex__unlock(pools->mutex, SVN_NO_ERROR));