1 /*- 2 * This file is provided under a dual BSD/GPLv2 license. When using or 3 * redistributing this file, you may do so under either license. 4 * 5 * GPL LICENSE SUMMARY 6 * 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 * The full GNU General Public License is included in this distribution 22 * in the file called LICENSE.GPL. 23 * 24 * BSD LICENSE 25 * 26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 33 * * Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * * Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in 37 * the documentation and/or other materials provided with the 38 * distribution. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 41 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 42 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 43 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 44 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 46 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 * 52 * $FreeBSD$ 53 */ 54 #ifndef _SCI_BASE_STATE_MACHINE_OBSERVER_H_ 55 #define _SCI_BASE_STATE_MACHINE_OBSERVER_H_ 56 57 /** 58 * @file 59 * 60 * @brief This file contains all of the structures, constants, and methods 61 * common to all state machine observer object definitions. 62 */ 63 64 #ifdef __cplusplus 65 extern "C" { 66 #endif // __cplusplus 67 68 #include <dev/isci/scil/sci_base_observer.h> 69 #include <dev/isci/scil/sci_base_subject.h> 70 71 #if defined(SCI_LOGGING) 72 73 /** 74 * @struct SCI_BASE_STATE_MACHINE_OBSERVER 75 * 76 * @brief The base state machine observer structure defines the fields 77 * necessary for a user that wishes to observe the behavior (i.e. 78 * state changes) of a state machine. 79 */ 80 typedef struct SCI_BASE_STATE_MACHINE_OBSERVER 81 { 82 /** 83 * The field specifies that the parent object for the base state 84 * machine observer is the base observer itself. 85 */ 86 SCI_BASE_OBSERVER_T parent; 87 88 /** 89 * This field contains the state recorded during the last state machine 90 * update. 91 */ 92 U32 subject_state; 93 94 } SCI_BASE_STATE_MACHINE_OBSERVER_T; 95 96 /** 97 * @brief This method provides default behavior for a state machine observer. 98 * This method records the state of the subject (i.e. the state 99 * machine) and returns. 100 * 101 * @param[in] this_observer This parameter specifes the state machine 102 * observer in which to record the state change from the subject. 103 * @param[in] the_subject This parameter evaluates to the state machine 104 * object under observation. 105 * 106 * @return none 107 */ 108 void sci_base_state_machine_observer_default_update( 109 SCI_BASE_OBSERVER_T *this_observer, 110 SCI_BASE_SUBJECT_T *the_subject 111 ); 112 113 /** 114 * @brief This method constructs the supplied state machine observer. 115 * 116 * @param[in] this_observer This parameter specifes the state machine 117 * observer to be constructed. 118 * 119 * @return none 120 */ 121 void sci_base_state_machine_observer_construct( 122 SCI_BASE_STATE_MACHINE_OBSERVER_T *this_observer 123 ); 124 125 #else // defined(SCI_LOGGING) 126 127 typedef U8 SCI_BASE_STATE_MACHINE_OBSERVER_T; 128 129 #define sci_base_state_machine_observer_default_update 130 #define sci_base_state_machine_observer_construct 131 132 #endif // defined(SCI_LOGGING) 133 134 #ifdef __cplusplus 135 } 136 #endif // __cplusplus 137 138 #endif // _SCI_BASE_STATE_MACHINE_OBSERVER_H_ 139