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c0efe19cec
Serializer pools have previously existed in Asterisk. However, for the most part the code has been duplicated across modules. This patch abstracts the code into an 'ast_serializer_pool' object. As well the code is now centralized in serializer.c/h. In addition serializer pools can now optionally be monitored by a shutdown group. This will prevent the pool from being destroyed until all serializers have completed. Change-Id: Ib1e906144b90ffd4d5ed9826f0b719ca9c6d2971
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2019, Sangoma Technologies Corporation
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*
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* Kevin Harwell <kharwell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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#ifndef _AST_SERIALIZER_H
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#define _AST_SERIALIZER_H
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struct ast_threadpool;
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/*!
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* Maintains a named pool of thread pooled taskprocessors. Also if configured
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* a shutdown group can be enabled that will ensure all serializers have
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* completed any assigned task before destruction.
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*/
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struct ast_serializer_pool;
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/*!
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* \brief Destroy the serializer pool.
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*
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* Attempt to destroy the serializer pool. If a shutdown group has been enabled,
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* and times out waiting for threads to complete, then this function will return
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* the number of remaining threads, and the pool will not be destroyed.
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*
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* \param pool The pool to destroy
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*/
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int ast_serializer_pool_destroy(struct ast_serializer_pool *pool);
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/*!
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* \brief Create a serializer pool.
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*
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* Create a serializer pool with an optional shutdown group. If a timeout greater
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* than -1 is specified then a shutdown group is enabled on the pool.
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*
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* \param name The base name for the pool, and used when building taskprocessor(s)
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* \param size The size of the pool
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* \param threadpool The backing threadpool to use
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* \param timeout The timeout used if using a shutdown group (-1 = disabled)
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*
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* \retval A newly allocated serializer pool object, or NULL on error
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*/
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struct ast_serializer_pool *ast_serializer_pool_create(const char *name,
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unsigned int size, struct ast_threadpool *threadpool, int timeout);
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/*!
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* \brief Retrieve the base name of the serializer pool.
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*
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* \param pool The pool object
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*
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* \retval The base name given to the pool
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*/
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const char *ast_serializer_pool_name(const struct ast_serializer_pool *pool);
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/*!
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* \brief Retrieve a serializer from the pool.
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*
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* \param pool The pool object
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*
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* \retval A serializer/taskprocessor
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*/
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struct ast_taskprocessor *ast_serializer_pool_get(struct ast_serializer_pool *pool);
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/*!
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* \brief Set taskprocessor alert levels for the serializers in the pool.
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*
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* \param pool The pool to destroy
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*
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* \retval 0 on success, or -1 on error.
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*/
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int ast_serializer_pool_set_alerts(struct ast_serializer_pool *pool, long high, long low);
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#endif /* _AST_SERIALIZER_H */
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