1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 23 * The full GNU General Public License is included in this distribution 24 * in the file called LICENSE.GPL. 25 * 26 * BSD LICENSE 27 * 28 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 35 * * Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * * Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in 39 * the documentation and/or other materials provided with the 40 * distribution. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 43 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 44 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 45 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 46 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 48 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 52 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 * 54 * $FreeBSD$ 55 */ 56 #ifndef _SCI_BASE_STATE_MACHINE_OBSERVER_H_ 57 #define _SCI_BASE_STATE_MACHINE_OBSERVER_H_ 58 59 /** 60 * @file 61 * 62 * @brief This file contains all of the structures, constants, and methods 63 * common to all state machine observer object definitions. 64 */ 65 66 #ifdef __cplusplus 67 extern "C" { 68 #endif // __cplusplus 69 70 #include <dev/isci/scil/sci_base_observer.h> 71 #include <dev/isci/scil/sci_base_subject.h> 72 73 #if defined(SCI_LOGGING) 74 75 /** 76 * @struct SCI_BASE_STATE_MACHINE_OBSERVER 77 * 78 * @brief The base state machine observer structure defines the fields 79 * necessary for a user that wishes to observe the behavior (i.e. 80 * state changes) of a state machine. 81 */ 82 typedef struct SCI_BASE_STATE_MACHINE_OBSERVER 83 { 84 /** 85 * The field specifies that the parent object for the base state 86 * machine observer is the base observer itself. 87 */ 88 SCI_BASE_OBSERVER_T parent; 89 90 /** 91 * This field contains the state recorded during the last state machine 92 * update. 93 */ 94 U32 subject_state; 95 96 } SCI_BASE_STATE_MACHINE_OBSERVER_T; 97 98 /** 99 * @brief This method provides default behavior for a state machine observer. 100 * This method records the state of the subject (i.e. the state 101 * machine) and returns. 102 * 103 * @param[in] this_observer This parameter specifes the state machine 104 * observer in which to record the state change from the subject. 105 * @param[in] the_subject This parameter evaluates to the state machine 106 * object under observation. 107 * 108 * @return none 109 */ 110 void sci_base_state_machine_observer_default_update( 111 SCI_BASE_OBSERVER_T *this_observer, 112 SCI_BASE_SUBJECT_T *the_subject 113 ); 114 115 /** 116 * @brief This method constructs the supplied state machine observer. 117 * 118 * @param[in] this_observer This parameter specifes the state machine 119 * observer to be constructed. 120 * 121 * @return none 122 */ 123 void sci_base_state_machine_observer_construct( 124 SCI_BASE_STATE_MACHINE_OBSERVER_T *this_observer 125 ); 126 127 #else // defined(SCI_LOGGING) 128 129 typedef U8 SCI_BASE_STATE_MACHINE_OBSERVER_T; 130 131 #define sci_base_state_machine_observer_default_update 132 #define sci_base_state_machine_observer_construct 133 134 #endif // defined(SCI_LOGGING) 135 136 #ifdef __cplusplus 137 } 138 #endif // __cplusplus 139 140 #endif // _SCI_BASE_STATE_MACHINE_OBSERVER_H_ 141