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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Olaf Wintermann. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.
 */

#ifndef THREADPOOL_H
#define	THREADPOOL_H

#include <pthread.h>

#ifdef	__cplusplus
extern "C" {
#endif

typedef struct _pool_queue pool_queue_t;
typedef struct _thread_pool {
    pthread_mutex_t queue_lock;
    pthread_mutex_t avlbl_lock;
    pthread_cond_t  available;
    int             queue_len;
    pool_queue_t    *queue;
} threadpool_t;

typedef void*(*job_callback_f)(void *data);
typedef struct _threadpool_job {
    job_callback_f  callback;
    void            *data;
} threadpool_job;

struct _pool_queue {
    threadpool_job   *job;
    pool_queue_t     *next;
};


threadpool_t* threadpool_new(int n);

void* threadpool_func(void *data);

threadpool_job* threadpool_get_job(threadpool_t *pool);

void threadpool_run(threadpool_t *pool, job_callback_f func, void *data);

#ifdef	__cplusplus
}
#endif

#endif	/* THREADPOOL_H */