--- /dev/null
+++ Libc/Libc-594.9.1/pthreads/pthread_workqueue.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2007 Apple, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/* pthread workqueue defns */
+
+#ifndef _POSIX_PTHREAD_WORKQUEUE_H
+#define _POSIX_PTHREAD_WORKQUEUE_H
+
+#include <sys/cdefs.h>
+#include <pthread.h>
+
+
+#define __PTHREAD_WORKQ_SIZE__ 128
+#define __PTHREAD_WORKQ_ATTR_SIZE__ 60
+
+#define PTHREAD_WORKQUEUE_SIG 0xBEBEBEBE
+#define PTHREAD_WORKQUEUE_ATTR_SIG 0xBEBEBEBE
+
+#ifndef __POSIX_LIB__
+typedef struct { unsigned int  sig; char opaque[__PTHREAD_WORKQ_SIZE__];} *pthread_workqueue_t;
+typedef struct { unsigned int  sig; char opaque[__PTHREAD_WORKQ_ATTR_SIZE__]; } pthread_workqueue_attr_t;
+#endif
+typedef void * pthread_workitem_handle_t;
+/* Kernel expected target concurrency of the workqueue clients for the three priority queues */
+
+#define WORKQ_HIGH_PRIOQUEUE	0
+#define WORKQ_DEFAULT_PRIOQUEUE	1
+#define WORKQ_LOW_PRIOQUEUE	2
+
+#define WORKQ_NUM_PRIOQUEUE	3
+
+extern __int32_t workq_targetconc[WORKQ_NUM_PRIOQUEUE];
+
+__BEGIN_DECLS
+int pthread_workqueue_init_np(void);
+int pthread_workqueue_attr_init_np(pthread_workqueue_attr_t * attr);
+int pthread_workqueue_attr_destroy_np(pthread_workqueue_attr_t * attr);
+int pthread_workqueue_attr_getqueuepriority_np(const pthread_workqueue_attr_t * attr, int * qprio);
+/* WORKQ_HIGH/DEFAULT/LOW_PRIOQUEUE are the only valid values */
+int pthread_workqueue_attr_setqueuepriority_np(pthread_workqueue_attr_t * attr, int qprio);
+int pthread_workqueue_attr_getovercommit_np(const pthread_workqueue_attr_t * attr, int * ocommp);
+int pthread_workqueue_attr_setovercommit_np(pthread_workqueue_attr_t * attr, int ocomm);
+
+
+int pthread_workqueue_create_np(pthread_workqueue_t * workqp, const pthread_workqueue_attr_t * attr);
+int pthread_workqueue_additem_np(pthread_workqueue_t workq, void ( *workitem_func)(void *), void * workitem_arg, pthread_workitem_handle_t * itemhandlep, unsigned int *gencountp);
+/* If the queue value is WORKQ_NUM_PRIOQUEUE, the request for concurrency is for all queues */
+int pthread_workqueue_requestconcurrency_np(int queue, int concurrency);
+int pthread_workqueue_getovercommit_np(pthread_workqueue_t workq,  unsigned int *ocommp);
+/* 
+ * If the arg is non zero, it enables kill on current thread.
+ * If the arg of zero, it disables kill on current thread.
+ */
+int __pthread_workqueue_setkill(int);
+__END_DECLS
+
+#endif /* _POSIX_PTHREAD_WORKQUEUE_H */
+