1/*
2 * Copyright (c) 2010 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#include <mach/mach.h>
30#include <mach/mach_init.h>
31
32//extern mach_port_t _pthread_reply_port(pthread_t);
33static mach_port_t _task_reply_port = MACH_PORT_NULL;
34
35extern mach_port_t _mig_get_reply_port(void);
36extern void _mig_set_reply_port(mach_port_t port);
37
38/*
39 * Called by mach_init with 0 before cthread_init is
40 * called and again with 1 at the end of cthread_init.
41 */
42void
43_mig_init(int init_done)
44{
45	if (init_done == 0) {
46		_task_reply_port = mach_reply_port();
47	}
48}
49
50/*
51 * Called by mig interface code whenever a reply port is needed.
52 * Tracing is masked during this call; otherwise, a call to printf()
53 * can result in a call to malloc() which eventually reenters
54 * mig_get_reply_port() and deadlocks.
55 */
56mach_port_t
57mig_get_reply_port(void)
58{
59	register mach_port_t port = _mig_get_reply_port();
60	if (port == MACH_PORT_NULL) {
61		port = mach_reply_port();
62		_mig_set_reply_port(port);
63	}
64	return port;
65}
66
67/*
68 * Called by mig interface code after a timeout on the reply port.
69 * May also be called by user. The new mig calls with port passed in.
70 */
71void
72mig_dealloc_reply_port(mach_port_t migport)
73{
74	register mach_port_t port;
75
76	port = _mig_get_reply_port();
77	if (port != MACH_PORT_NULL && port != _task_reply_port) {
78		_mig_set_reply_port(_task_reply_port);
79		(void) mach_port_mod_refs(mach_task_self(), port, MACH_PORT_RIGHT_RECEIVE, -1);
80		if (migport != port) {
81			(void) mach_port_deallocate(mach_task_self(), migport);
82		}
83		_mig_set_reply_port(MACH_PORT_NULL);
84	}
85}
86
87/*************************************************************
88 *  Called by mig interfaces after each RPC.
89 *  Could be called by user.
90 ***********************************************************/
91
92void
93mig_put_reply_port(mach_port_t reply_port)
94{
95}
96