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85 lines
3.8 KiB
C++
85 lines
3.8 KiB
C++
/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
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#ident "$Id$"
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/*======
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This file is part of PerconaFT.
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Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
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PerconaFT is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2,
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as published by the Free Software Foundation.
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PerconaFT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
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----------------------------------------
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PerconaFT is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License, version 3,
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as published by the Free Software Foundation.
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PerconaFT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
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======= */
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#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
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#pragma once
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#include <stdio.h>
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// A toku_thread is toku_pthread that can be cached.
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struct toku_thread;
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// Run a function f on a thread
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// This function setups up the thread to run function f with argument arg and then wakes up
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// the thread to run it.
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void toku_thread_run(struct toku_thread *thread, void *(*f)(void *arg), void *arg);
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// A toku_thread_pool is a pool of toku_threads. These threads can be allocated from the pool
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// and can run an arbitrary function.
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struct toku_thread_pool;
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typedef struct toku_thread_pool *THREADPOOL;
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// Create a new threadpool
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// Effects: a new threadpool is allocated and initialized. the number of threads in the threadpool is limited to max_threads.
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// If max_threads == 0 then there is no limit on the number of threads in the pool.
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// Initially, there are no threads in the pool. Threads are allocated by the _get or _run functions.
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// Returns: if there are no errors, the threadpool is set and zero is returned. Otherwise, an error number is returned.
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int toku_thread_pool_create(struct toku_thread_pool **threadpoolptr, int max_threads);
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// Destroy a threadpool
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// Effects: the calling thread joins with all of the threads in the threadpool.
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// Effects: the threadpool memory is freed.
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// Returns: the threadpool is set to null.
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void toku_thread_pool_destroy(struct toku_thread_pool **threadpoolptr);
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// Get the current number of threads in the thread pool
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int toku_thread_pool_get_current_threads(struct toku_thread_pool *pool);
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// Get one or more threads from the thread pool
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// dowait indicates whether or not the caller blocks waiting for threads to free up
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// nthreads on input determines the number of threads that are wanted
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// nthreads on output indicates the number of threads that were allocated
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// toku_thread_return on input supplies an array of thread pointers (all NULL). This function returns the threads
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// that were allocated in the array.
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int toku_thread_pool_get(struct toku_thread_pool *pool, int dowait, int *nthreads, struct toku_thread **toku_thread_return);
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// Run a function f on one or more threads allocated from the thread pool
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int toku_thread_pool_run(struct toku_thread_pool *pool, int dowait, int *nthreads, void *(*f)(void *arg), void *arg);
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// Print the state of the thread pool
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void toku_thread_pool_print(struct toku_thread_pool *pool, FILE *out);
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