/usr/include/pthread_workqueue.h is in libpthread-workqueue-dev 0.8.2-1.
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) 2010, Mark Heily <mark@heily.com>
* Copyright (c) 2009, Stacey Son <sson@freebsd.org>
* Copyright (c) 2000-2008, Apple Inc.
* 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 unmodified, 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 _PTHREAD_WORKQUEUE_H
#define _PTHREAD_WORKQUEUE_H
#if _WIN32
#define _PWQ_EXPORT __declspec(dllexport)
#else
#define _PWQ_EXPORT
#endif
typedef struct _pthread_workqueue * pthread_workqueue_t;
typedef void * pthread_workitem_handle_t;
/* Pad size to 64 bytes. */
typedef struct {
unsigned int sig;
int queueprio;
int overcommit;
unsigned int pad[13];
} pthread_workqueue_attr_t;
/* Work queue priority attributes. */
#define WORKQ_HIGH_PRIOQUEUE 0
#define WORKQ_DEFAULT_PRIOQUEUE 1
#define WORKQ_LOW_PRIOQUEUE 2
#if defined(__cplusplus)
extern "C" {
#endif
int _PWQ_EXPORT pthread_workqueue_create_np(pthread_workqueue_t * workqp,
const pthread_workqueue_attr_t * attr);
int _PWQ_EXPORT pthread_workqueue_additem_np(pthread_workqueue_t workq,
void (*workitem_func)(void *), void * workitem_arg,
pthread_workitem_handle_t * itemhandlep, unsigned int *gencountp);
int _PWQ_EXPORT pthread_workqueue_attr_init_np(pthread_workqueue_attr_t * attrp);
int _PWQ_EXPORT pthread_workqueue_attr_destroy_np(pthread_workqueue_attr_t * attr);
int _PWQ_EXPORT pthread_workqueue_attr_setqueuepriority_np(pthread_workqueue_attr_t * attr,
int qprio);
int _PWQ_EXPORT pthread_workqueue_attr_getovercommit_np(
const pthread_workqueue_attr_t * attr, int * ocommp);
int _PWQ_EXPORT pthread_workqueue_attr_setovercommit_np(pthread_workqueue_attr_t * attr,
int ocomm);
int _PWQ_EXPORT pthread_workqueue_requestconcurrency_np(pthread_workqueue_t workq,
int queue, int request_concurrency);
int _PWQ_EXPORT pthread_workqueue_getovercommit_np(pthread_workqueue_t workq,
unsigned int *ocommp);
void _PWQ_EXPORT pthread_workqueue_main_np(void);
#ifdef MAKE_STATIC
int _PWQ_EXPORT pthread_workqueue_init_np(void);
#endif
/* NOTE: this is not part of the Darwin API */
unsigned long _PWQ_EXPORT pthread_workqueue_peek_np(const char *);
#if defined(__cplusplus)
}
#endif
#undef _PWQ_EXPORT
#endif /* _PTHREAD_WORKQUEUE_H */
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