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Annotation of XNU/osfmk/kern/ipc_sync.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * The contents of this file constitute Original Code as defined in and
                      7:  * are subject to the Apple Public Source License Version 1.1 (the
                      8:  * "License").  You may not use this file except in compliance with the
                      9:  * License.  Please obtain a copy of the License at
                     10:  * http://www.apple.com/publicsource and read it before using this file.
                     11:  * 
                     12:  * This Original Code and all software distributed under the License are
                     13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     17:  * License for the specific language governing rights and limitations
                     18:  * under the License.
                     19:  * 
                     20:  * @APPLE_LICENSE_HEADER_END@
                     21:  */
                     22: /*
                     23:  * @OSF_COPYRIGHT@
                     24:  * 
                     25:  */
                     26: 
                     27: #include <kern/ipc_kobject.h>
                     28: #include <kern/ipc_sync.h>
                     29: #include <ipc/port.h>
                     30: #include <ipc/ipc_space.h>
                     31: #include <ipc/ipc_port.h>
                     32: #include <mach/semaphore_server.h>
                     33: #include <mach/lock_set_server.h>
                     34: #include <mach/mach_port_server.h>
                     35: #include <mach/port.h>
                     36: 
                     37: 
                     38: semaphore_t
                     39: convert_port_to_semaphore (ipc_port_t port)
                     40: {
                     41:        semaphore_t semaphore = SEMAPHORE_NULL;
                     42: 
                     43:        if (IP_VALID (port)) {
                     44:                ip_lock(port);
                     45:                if (ip_active(port) && (ip_kotype(port) == IKOT_SEMAPHORE)) {
                     46:                        semaphore = (semaphore_t) port->ip_kobject;
                     47:                        semaphore_reference(semaphore);
                     48:                }
                     49:                ip_unlock(port);
                     50:        }
                     51: 
                     52:        return (semaphore);
                     53: }
                     54: 
                     55: ipc_port_t
                     56: convert_semaphore_to_port (semaphore_t semaphore)
                     57: {
                     58:        ipc_port_t port;
                     59: 
                     60:        if (semaphore != SEMAPHORE_NULL)
                     61:                port = ipc_port_make_send(semaphore->port);
                     62:        else
                     63:                port = IP_NULL;
                     64: 
                     65:        return (port);
                     66: }
                     67: 
                     68: lock_set_t
                     69: convert_port_to_lock_set (ipc_port_t port)
                     70: {
                     71:        lock_set_t lock_set = LOCK_SET_NULL;
                     72: 
                     73:        if (IP_VALID (port)) {
                     74:                ip_lock(port);
                     75:                if (ip_active(port) && (ip_kotype(port) == IKOT_LOCK_SET)) {
                     76:                        lock_set = (lock_set_t) port->ip_kobject;
                     77:                        lock_set_reference(lock_set);
                     78:                }
                     79:                ip_unlock(port);
                     80:        }
                     81: 
                     82:        return (lock_set);
                     83: }
                     84: 
                     85: ipc_port_t
                     86: convert_lock_set_to_port (lock_set_t lock_set)
                     87: {
                     88:        ipc_port_t port;
                     89: 
                     90:        if (lock_set != LOCK_SET_NULL)
                     91:                port = ipc_port_make_send(lock_set->port);
                     92:        else
                     93:                port = IP_NULL;
                     94: 
                     95:        return (port);
                     96: }
                     97: 

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