--- /dev/null
+++ Libc/Libc-262.3.2/threads/cprocs.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 
+ * 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@
+ */
+/* 
+ * Mach Operating System
+ * Copyright (c) 1989 Carnegie-Mellon University
+ * All rights reserved.  The CMU software License Agreement specifies
+ * the terms and conditions for use and redistribution.
+ */
+
+/*
+ * HISTORY
+ * 22-July-93 Blaine Garst
+ *	fixed kernel cache set up of cproc info
+ *
+ * 05-April-90  Morris Meyer (mmeyer) at NeXT
+ * 	Fixed bug in cproc_fork_child() where the first cproc would
+ *	try doing a msg_rpc() with an invalid reply port.
+ *
+ */
+
+/*
+ * cprocs.c - by Eric Cooper
+ *
+ * Implementation of cprocs (lightweight processes)
+ * and primitive synchronization operations.
+ */
+#include <stdlib.h>
+#include "pthread_internals.h"
+#include "cthreads.h"
+#include "cthread_internals.h"
+#include <mach/message.h>
+
+/*
+ * C Threads imports:
+ */
+extern void stack_init();
+extern void alloc_stack(), _dealloc_stack();
+
+/*
+ * Mach imports:
+ */
+extern mach_port_t mach_thread_self();
+extern boolean_t swtch_pri();
+
+private int cprocs_started = FALSE;
+
+#ifdef	CTHREADS_DEBUG
+private void
+print_cproc(p)
+	cproc_t p;
+{
+	char *s;
+
+	switch (p->state) {
+	    case CPROC_RUNNING:
+		s = "";
+		break;
+	    case CPROC_SPINNING:
+		s = "+";
+		break;
+	    case CPROC_BLOCKED:
+		s = "*";
+		break;
+	    default:
+		ASSERT(SHOULDNT_HAPPEN);
+	}
+	printf(" %x(%s)%s",
+		p->id,
+		cthread_name(p->incarnation), s);
+}
+
+private void
+print_cproc_queue(name, queue)
+	const char * name;
+	cthread_queue_t queue;
+{
+	printf("[%s] %s:", cthread_name(cthread_self()), name);
+	cthread_queue_map(queue, cproc_t, print_cproc);
+	printf("\n");
+}
+#endif	CTHREADS_DEBUG
+
+private int cproc_lock = 0;		/* unlocked */
+private cproc_t cprocs = NO_CPROC;	/* linked list of cprocs */
+
+#ifdef	CTHREADS_DEBUG
+private void
+print_all_cprocs()
+{
+	cproc_t p;
+
+	printf("[%s] cprocs:", cthread_name(cthread_self()));
+	for (p = cprocs; p != NO_CPROC; p = p->link)
+		print_cproc(p);
+	printf("\n");
+}
+#endif	CTHREADS_DEBUG
+
+/*
+ * Routines for supporting fork() of multi-threaded programs.
+ */
+
+void _cproc_fork_child()
+/*
+ * Called in the child after a fork().  Resets cproc data structures to
+ * coincide with the reality that we now have a single cproc and cthread.
+ */
+{
+	pthread_t pself;
+
+        pself = pthread_self();
+        pself->reply_port = MACH_PORT_NULL;
+}
+
+/*
+ *	Support for a per-thread UNIX errno.
+ */
+
+#undef errno
+extern int errno;
+void cthread_set_errno_self(error)
+	int	error;
+{
+	pthread_t t;
+
+	t = pthread_self();
+        if (t && (t->sig == _PTHREAD_SIG)) {
+            t->err_no = error;
+        }
+        errno = error;
+}
+