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