/usr/include/ntirpc/misc/thrdpool.h is in libntirpc-dev 1.4.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2013 Linux Box Corporation.
* 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 AUTHOR `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 AUTHOR 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 THRDPOOL_H
#define THRDPOOL_H
#include <misc/queue.h>
#include <misc/wait_queue.h>
#define THRD_FLAG_NONE 0x0000
#define THRD_FLAG_SHUTDOWN 0x0001
#define THRD_FLAG_ACTIVE 0x0002
struct work {
TAILQ_ENTRY(work) tailq;
void (*func) (void*);
void *arg;
};
struct thrdpool;
struct thrd {
TAILQ_ENTRY(thrd) tailq;
struct thrd_context {
pthread_t id;
struct wait_entry we;
struct work *work;
} ctx;
struct thrdpool *pool;
bool idle;
};
struct thrdpool_params {
int32_t thrd_max;
int32_t thrd_min;
};
struct thrdpool {
char *name;
uint32_t flags;
struct thrdpool_params params;
pthread_attr_t attr;
struct wait_entry we;
TAILQ_HEAD(idle_tailq, thrd) idle_q;
TAILQ_HEAD(work_tailq, work) work_q;
int32_t n_idle;
int32_t n_threads;
};
typedef void (*thrd_func_t) (void *);
int thrdpool_init(struct thrdpool *, const char *, struct thrdpool_params *);
int thrdpool_submit_work(struct thrdpool *, thrd_func_t, void *);
int thrdpool_shutdown(struct thrdpool *);
#endif /* THRDPOOL_H */
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