1 /* 2 * Copyright (c) 1999-2000, Eric Moon. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions, and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 27 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 // observe.cpp 33 34 #include "observe.h" 35 36 #include <Debug.h> 37 #include <Message.h> 38 39 //__USE_CORTEX_NAMESPACE 40 41 // -------------------------------------------------------- // 42 // *** HELPERS *** 43 // -------------------------------------------------------- // 44 45 // * Asynchronous 46 47 status_t __CORTEX_NAMESPACE__ add_observer( 48 const BMessenger& observer, 49 const BMessenger& target) { 50 // ASSERT(observer.IsValid()); 51 // ASSERT(target.IsValid()); 52 53 BMessage m(M_ADD_OBSERVER); 54 m.AddMessenger("observer", observer); 55 return target.SendMessage(&m, observer); 56 } 57 58 status_t __CORTEX_NAMESPACE__ remove_observer( 59 const BMessenger& observer, 60 const BMessenger& target) { 61 // ASSERT(observer.IsValid()); 62 // ASSERT(target.IsValid()); 63 64 BMessage m(M_REMOVE_OBSERVER); 65 m.AddMessenger("observer", observer); 66 return target.SendMessage(&m, observer); 67 } 68 69 // * Synchronous 70 71 status_t __CORTEX_NAMESPACE__ add_observer( 72 const BMessenger& observer, 73 const BMessenger& target, 74 BMessage& reply, 75 bigtime_t timeout) { 76 // ASSERT(observer.IsValid()); 77 // ASSERT(target.IsValid()); 78 79 BMessage m(M_ADD_OBSERVER); 80 m.AddMessenger("observer", observer); 81 return target.SendMessage(&m, &reply, timeout); 82 } 83 84 status_t __CORTEX_NAMESPACE__ remove_observer( 85 const BMessenger& observer, 86 const BMessenger& target, 87 BMessage& reply, 88 bigtime_t timeout) { 89 // ASSERT(observer.IsValid()); 90 // ASSERT(target.IsValid()); 91 92 BMessage m(M_REMOVE_OBSERVER); 93 m.AddMessenger("observer", observer); 94 return target.SendMessage(&m, &reply, timeout); 95 } 96 97 // END -- observe.cpp -- 98