1 | /** |
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2 | * @file rtems/score/sysstate.h |
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3 | * |
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4 | * This include file contains information regarding the system state. |
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5 | */ |
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6 | |
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7 | /* |
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8 | * COPYRIGHT (c) 1989-2006. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.com/license/LICENSE. |
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14 | * |
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15 | * $Id$ |
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16 | */ |
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17 | |
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18 | #ifndef _RTEMS_SCORE_SYSSTATE_H |
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19 | #define _RTEMS_SCORE_SYSSTATE_H |
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20 | |
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21 | /** |
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22 | * @defgroup ScoreSysState System State Handler |
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23 | * |
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24 | * This handler encapsulates functionality related to the management of the |
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25 | * internal system state of RTEMS. |
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26 | */ |
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27 | /**@{*/ |
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28 | |
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29 | #ifdef __cplusplus |
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30 | extern "C" { |
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31 | #endif |
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32 | |
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33 | /* types */ |
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34 | |
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35 | /* enumerated constants */ |
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36 | |
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37 | /** |
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38 | * The following type defines the possible system states. |
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39 | */ |
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40 | typedef enum { |
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41 | /** This indicates that the system state is between the start |
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42 | * of rtems_initialize_executive_early and the end of the first |
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43 | * phase of initialization. |
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44 | */ |
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45 | SYSTEM_STATE_BEFORE_INITIALIZATION, |
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46 | /** This indicates that the system state is between end of the first |
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47 | * phase of initializatin but before multitasking is started. |
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48 | */ |
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49 | SYSTEM_STATE_BEFORE_MULTITASKING, |
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50 | /** This indicates that the system state is attempting to initiate |
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51 | * multitasking. |
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52 | */ |
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53 | SYSTEM_STATE_BEGIN_MULTITASKING, |
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54 | /** This indicates that the system is up and operating normally. */ |
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55 | SYSTEM_STATE_UP, |
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56 | /** This indicates that the system is in the midst of a shutdown. */ |
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57 | SYSTEM_STATE_SHUTDOWN, |
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58 | /** This indicates that a fatal error has occurred. */ |
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59 | SYSTEM_STATE_FAILED |
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60 | } System_state_Codes; |
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61 | |
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62 | /** This defines the first system state. */ |
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63 | #define SYSTEM_STATE_CODES_FIRST SYSTEM_STATE_BEFORE_INITIALIZATION |
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64 | /** This defines the highest value system state. */ |
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65 | #define SYSTEM_STATE_CODES_LAST SYSTEM_STATE_FAILED |
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66 | |
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67 | #if defined(RTEMS_MULTIPROCESSING) |
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68 | /** |
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69 | * The following variable indicates whether or not this is |
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70 | * an multiprocessing system. |
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71 | */ |
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72 | SCORE_EXTERN boolean _System_state_Is_multiprocessing; |
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73 | #endif |
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74 | |
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75 | /** |
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76 | * The following variable contains the current system state. |
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77 | */ |
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78 | SCORE_EXTERN System_state_Codes _System_state_Current; |
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79 | |
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80 | /* |
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81 | * Make it possible for the application to get the system state information. |
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82 | */ |
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83 | |
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84 | #include <rtems/score/sysstate.inl> |
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85 | |
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86 | #ifdef __cplusplus |
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87 | } |
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88 | #endif |
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89 | |
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90 | /**@}*/ |
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91 | |
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92 | #endif |
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93 | /* end of include file */ |
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