[302] | 1 | /*
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| 2 | * TOPPERS/ASP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Advanced Standard Profile Kernel
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| 5 | *
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| 6 | * Copyright (C) 2005-2015 by Embedded and Real-Time Systems Laboratory
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| 7 | * Graduate School of Information Science, Nagoya Univ., JAPAN
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| 8 | *
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| 9 | * ä¸è¨èä½æ¨©è
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| 10 | ã¯ï¼ä»¥ä¸ã®(1)ã(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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| 11 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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| 12 | * å¤ã»åé
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| 13 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 14 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 15 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 16 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 17 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 18 | * ç¨ã§ããå½¢ã§åé
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| 19 | å¸ããå ´åã«ã¯ï¼åé
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| 20 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 21 | * è
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| 22 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 23 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 24 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 25 | * ç¨ã§ããªãå½¢ã§åé
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| 26 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 27 | * ã¨ï¼
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| 28 | * (a) åé
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| 29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 32 | * (b) åé
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| 33 | å¸ã®å½¢æ
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| 34 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 35 | * å ±åãããã¨ï¼
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| 36 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 37 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 38 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 39 | 責ãããã¨ï¼
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| 40 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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| 41 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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| 42 | ããã³TOPPERSããã¸ã§ã¯ãã
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| 43 | * å
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| 44 | 責ãããã¨ï¼
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| 45 | *
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| 46 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 47 | ã
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| 48 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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| 49 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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| 50 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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| 51 | * ã®è²¬ä»»ãè² ããªãï¼
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| 52 | *
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| 53 | * $Id: mutex.c 471 2015-12-30 10:03:16Z ertl-hiro $
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| 54 | */
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| 55 |
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| 56 | /*
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| 57 | * ãã¥ã¼ããã¯ã¹æ©è½
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| 58 | */
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| 59 |
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| 60 | #include "kernel_impl.h"
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| 61 | #include "check.h"
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| 62 | #include "task.h"
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| 63 | #include "taskhook.h"
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| 64 | #include "wait.h"
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| 65 | #include "mutex.h"
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| 66 |
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| 67 | /*
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| 68 | * ãã¬ã¼ã¹ãã°ãã¯ãã®ããã©ã«ãå®ç¾©
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| 69 | */
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| 70 | #ifndef LOG_LOC_MTX_ENTER
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| 71 | #define LOG_LOC_MTX_ENTER(mtxid)
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| 72 | #endif /* LOG_LOC_MTX_ENTER */
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| 73 |
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| 74 | #ifndef LOG_LOC_MTX_LEAVE
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| 75 | #define LOG_LOC_MTX_LEAVE(ercd)
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| 76 | #endif /* LOG_LOC_MTX_LEAVE */
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| 77 |
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| 78 | #ifndef LOG_PLOC_MTX_ENTER
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| 79 | #define LOG_PLOC_MTX_ENTER(mtxid)
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| 80 | #endif /* LOG_PLOC_MTX_ENTER */
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| 81 |
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| 82 | #ifndef LOG_PLOC_MTX_LEAVE
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| 83 | #define LOG_PLOC_MTX_LEAVE(ercd)
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| 84 | #endif /* LOG_PLOC_MTX_LEAVE */
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| 85 |
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| 86 | #ifndef LOG_TLOC_MTX_ENTER
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| 87 | #define LOG_TLOC_MTX_ENTER(mtxid, tmout)
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| 88 | #endif /* LOG_TLOC_MTX_ENTER */
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| 89 |
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| 90 | #ifndef LOG_TLOC_MTX_LEAVE
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| 91 | #define LOG_TLOC_MTX_LEAVE(ercd)
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| 92 | #endif /* LOG_TLOC_MTX_LEAVE */
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| 93 |
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| 94 | #ifndef LOG_UNL_MTX_ENTER
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| 95 | #define LOG_UNL_MTX_ENTER(mtxid)
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| 96 | #endif /* LOG_UNL_MTX_ENTER */
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| 97 |
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| 98 | #ifndef LOG_UNL_MTX_LEAVE
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| 99 | #define LOG_UNL_MTX_LEAVE(ercd)
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| 100 | #endif /* LOG_UNL_MTX_LEAVE */
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| 101 |
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| 102 | #ifndef LOG_INI_MTX_ENTER
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| 103 | #define LOG_INI_MTX_ENTER(mtxid)
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| 104 | #endif /* LOG_INI_MTX_ENTER */
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| 105 |
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| 106 | #ifndef LOG_INI_MTX_LEAVE
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| 107 | #define LOG_INI_MTX_LEAVE(ercd)
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| 108 | #endif /* LOG_INI_MTX_LEAVE */
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| 109 |
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| 110 | #ifndef LOG_REF_MTX_ENTER
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| 111 | #define LOG_REF_MTX_ENTER(mtxid, pk_rmtx)
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| 112 | #endif /* LOG_REF_MTX_ENTER */
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| 113 |
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| 114 | #ifndef LOG_REF_MTX_LEAVE
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| 115 | #define LOG_REF_MTX_LEAVE(ercd, pk_rmtx)
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| 116 | #endif /* LOG_REF_MTX_LEAVE */
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| 117 |
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| 118 | /*
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| 119 | * ãã¥ã¼ããã¯ã¹ã®æ°
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| 120 | */
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| 121 | #define tnum_mtx ((uint_t)(tmax_mtxid - TMIN_MTXID + 1))
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| 122 |
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| 123 | /*
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| 124 | * ãã¥ã¼ããã¯ã¹IDãããã¥ã¼ããã¯ã¹ç®¡çãããã¯ãåãåºãããã®ãã¯ã
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| 125 | */
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| 126 | #define INDEX_MTX(mtxid) ((uint_t)((mtxid) - TMIN_MTXID))
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| 127 | #define get_mtxcb(mtxid) (&(mtxcb_table[INDEX_MTX(mtxid)]))
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| 128 |
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| 129 | /*
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| 130 | * ãã¥ã¼ããã¯ã¹ã®ãããã³ã«ãå¤æãããã¯ã
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| 131 | */
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| 132 | #define MTXPROTO_MASK 0x03U
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| 133 | #define MTXPROTO(p_mtxcb) ((p_mtxcb)->p_mtxinib->mtxatr & MTXPROTO_MASK)
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| 134 | #define MTX_CEILING(p_mtxcb) (MTXPROTO(p_mtxcb) == TA_CEILING)
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| 135 |
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| 136 | /*
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| 137 | * ãã¥ã¼ããã¯ã¹æ©è½ã®åæå
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| 138 | */
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| 139 | #ifdef TOPPERS_mtxini
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| 140 |
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| 141 | void
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| 142 | initialize_mutex(void)
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| 143 | {
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| 144 | uint_t i;
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| 145 | MTXCB *p_mtxcb;
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| 146 |
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| 147 | mtxhook_check_ceilpri = mutex_check_ceilpri;
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| 148 | mtxhook_scan_ceilmtx = mutex_scan_ceilmtx;
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| 149 | mtxhook_release_all = mutex_release_all;
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| 150 |
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| 151 | for (i = 0; i < tnum_mtx; i++) {
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| 152 | p_mtxcb = &(mtxcb_table[i]);
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| 153 | queue_initialize(&(p_mtxcb->wait_queue));
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| 154 | p_mtxcb->p_mtxinib = &(mtxinib_table[i]);
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| 155 | p_mtxcb->p_loctsk = NULL;
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| 156 | }
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| 157 | }
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| 158 |
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| 159 | #endif /* TOPPERS_mtxini */
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| 160 |
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| 161 | /*
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| 162 | * ä¸éåªå
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| 163 | 度éåã®ãã§ãã¯
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| 164 | */
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| 165 | #ifdef TOPPERS_mtxchk
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| 166 |
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| 167 | bool_t
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| 168 | mutex_check_ceilpri(TCB *p_tcb, uint_t bpriority)
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| 169 | {
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| 170 | MTXCB *p_mtxcb;
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| 171 |
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| 172 | /*
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| 173 | * ã¿ã¹ã¯ãããã¯ãã¦ããåªå
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| 174 | 度ä¸éãã¥ã¼ããã¯ã¹ã®ä¸ã§ï¼ä¸éåªå
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| 175 |
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| 176 | * 度ãbpriorityãããä½ããã®ãããã°ï¼falseãè¿ãï¼
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| 177 | */
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| 178 | p_mtxcb = p_tcb->p_lastmtx;
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| 179 | while (p_mtxcb != NULL) {
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| 180 | if (MTX_CEILING(p_mtxcb) && bpriority < p_mtxcb->p_mtxinib->ceilpri) {
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| 181 | return(false);
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| 182 | }
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| 183 | p_mtxcb = p_mtxcb->p_prevmtx;
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| 184 | }
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| 185 |
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| 186 | /*
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| 187 | * ã¿ã¹ã¯ãåªå
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| 188 | 度ä¸éãã¥ã¼ããã¯ã¹ã®ããã¯ãå¾
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| 189 | ã£ã¦ããå ´åã«ï¼ã
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| 190 | * ã®ä¸éåªå
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| 191 | 度ãbpriorityãããä½ãããã°ï¼falseãè¿ãï¼
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| 192 | */
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| 193 | if (TSTAT_WAIT_MTX(p_tcb->tstat)) {
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| 194 | p_mtxcb = ((WINFO_MTX *)(p_tcb->p_winfo))->p_mtxcb;
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| 195 | if (MTX_CEILING(p_mtxcb) && bpriority < p_mtxcb->p_mtxinib->ceilpri) {
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| 196 | return(false);
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| 197 | }
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| 198 | }
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| 199 |
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| 200 | /*
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| 201 | * ãããã®æ¡ä»¶ã«ãå½ã¦ã¯ã¾ããªããã°trueãè¿ãï¼
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| 202 | */
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| 203 | return(true);
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| 204 | }
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| 205 |
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| 206 | #endif /* TOPPERS_mtxchk */
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| 207 |
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| 208 | /*
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| 209 | * åªå
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| 210 | 度ä¸éãã¥ã¼ããã¯ã¹ãããã¯ãã¦ãããã®ãã§ãã¯
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| 211 | */
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| 212 | #ifdef TOPPERS_mtxscan
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| 213 |
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| 214 | bool_t
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| 215 | mutex_scan_ceilmtx(TCB *p_tcb)
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| 216 | {
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| 217 | MTXCB *p_mtxcb;
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| 218 |
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| 219 | p_mtxcb = p_tcb->p_lastmtx;
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| 220 | while (p_mtxcb != NULL) {
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| 221 | if (MTX_CEILING(p_mtxcb)) {
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| 222 | return(true);
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| 223 | }
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| 224 | p_mtxcb = p_mtxcb->p_prevmtx;
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| 225 | }
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| 226 | return(false);
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| 227 | }
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| 228 |
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| 229 | #endif /* TOPPERS_mtxscan */
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| 230 |
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| 231 | /*
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| 232 | * ã¿ã¹ã¯ã®ç¾å¨åªå
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| 233 | 度ã®è¨ç®
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| 234 | *
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| 235 | * p_tcbã§æå®ãããã¿ã¹ã¯ã®ç¾å¨åªå
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| 236 | 度ï¼ã«è¨å®ãã¹ãå¤ï¼ãè¨ç®ããï¼
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| 237 | */
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| 238 | Inline uint_t
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| 239 | mutex_calc_priority(TCB *p_tcb)
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| 240 | {
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| 241 | uint_t priority;
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| 242 | MTXCB *p_mtxcb;
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| 243 |
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| 244 | priority = p_tcb->bpriority;
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| 245 | p_mtxcb = p_tcb->p_lastmtx;
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| 246 | while (p_mtxcb != NULL) {
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| 247 | if (MTX_CEILING(p_mtxcb) && p_mtxcb->p_mtxinib->ceilpri < priority) {
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| 248 | priority = p_mtxcb->p_mtxinib->ceilpri;
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| 249 | }
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| 250 | p_mtxcb = p_mtxcb->p_prevmtx;
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| 251 | }
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| 252 | return(priority);
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| 253 | }
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| 254 |
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| 255 | /*
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| 256 | * ãã¥ã¼ããã¯ã¹ã解æ¾ããå ´åã®ç¾å¨åªå
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| 257 | 度å¤æ´å¦ç
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| 258 | */
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| 259 | #ifdef TOPPERS_mtxdrop
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| 260 |
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| 261 | void
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| 262 | mutex_drop_priority(TCB *p_tcb, MTXCB *p_mtxcb)
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| 263 | {
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| 264 | uint_t newpri;
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| 265 |
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| 266 | if (MTX_CEILING(p_mtxcb)
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| 267 | && p_mtxcb->p_mtxinib->ceilpri == p_tcb->priority) {
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| 268 | newpri = mutex_calc_priority(p_tcb);
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| 269 | if (newpri != p_tcb->priority) {
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| 270 | change_priority(p_tcb, newpri, true);
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| 271 | }
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| 272 | }
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| 273 | }
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| 274 |
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| 275 | #endif /* TOPPERS_mtxdrop */
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| 276 |
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| 277 | /*
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| 278 | * ãã¥ã¼ããã¯ã¹ã®ããã¯
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| 279 | */
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| 280 | #ifdef TOPPERS_mtxacq
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| 281 |
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| 282 | void
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| 283 | mutex_acquire(TCB *p_tcb, MTXCB *p_mtxcb)
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| 284 | {
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| 285 | p_mtxcb->p_loctsk = p_tcb;
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| 286 | p_mtxcb->p_prevmtx = p_tcb->p_lastmtx;
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| 287 | p_tcb->p_lastmtx = p_mtxcb;
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| 288 | if (MTX_CEILING(p_mtxcb)
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| 289 | && p_mtxcb->p_mtxinib->ceilpri < p_tcb->priority) {
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| 290 | change_priority(p_tcb, p_mtxcb->p_mtxinib->ceilpri, true);
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| 291 | }
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| 292 | }
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| 293 |
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| 294 | #endif /* TOPPERS_mtxacq */
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| 295 |
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| 296 | /*
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| 297 | * ãã¥ã¼ããã¯ã¹ã®ããã¯è§£é¤
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| 298 | */
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| 299 | #ifdef TOPPERS_mtxrel
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| 300 |
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| 301 | void
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| 302 | mutex_release(MTXCB *p_mtxcb)
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| 303 | {
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| 304 | TCB *p_tcb;
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| 305 |
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| 306 | if (queue_empty(&(p_mtxcb->wait_queue))) {
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| 307 | p_mtxcb->p_loctsk = NULL;
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| 308 | }
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| 309 | else {
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| 310 | /*
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| 311 | * ãã¥ã¼ããã¯ã¹å¾
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| 312 | ã¡ãã¥ã¼ã®å
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| 313 | é ã¿ã¹ã¯ï¼p_tcbï¼ã«ï¼ãã¥ã¼ãã
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| 314 | * ã¯ã¹ãããã¯ãããï¼
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| 315 | */
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| 316 | p_tcb = (TCB *) queue_delete_next(&(p_mtxcb->wait_queue));
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| 317 | wait_dequeue_tmevtb(p_tcb);
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| 318 | p_tcb->p_winfo->wercd = E_OK;
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| 319 |
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| 320 | p_mtxcb->p_loctsk = p_tcb;
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| 321 | p_mtxcb->p_prevmtx = p_tcb->p_lastmtx;
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| 322 | p_tcb->p_lastmtx = p_mtxcb;
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| 323 | if (MTX_CEILING(p_mtxcb)) {
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| 324 | if (p_mtxcb->p_mtxinib->ceilpri < p_tcb->priority) {
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| 325 | p_tcb->priority = p_mtxcb->p_mtxinib->ceilpri;
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| 326 | }
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| 327 | }
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| 328 | make_non_wait(p_tcb);
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| 329 | }
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| 330 | }
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| 331 |
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| 332 | #endif /* TOPPERS_mtxrel */
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| 333 |
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| 334 | /*
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| 335 | * ã¿ã¹ã¯ãããã¯ãã¦ãããã¹ã¦ã®ãã¥ã¼ããã¯ã¹ã®ããã¯è§£é¤
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| 336 | */
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| 337 | #ifdef TOPPERS_mtxrela
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| 338 |
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| 339 | void
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| 340 | mutex_release_all(TCB *p_tcb)
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| 341 | {
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| 342 | MTXCB *p_mtxcb;
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| 343 |
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| 344 | while ((p_mtxcb = p_tcb->p_lastmtx) != NULL) {
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| 345 | p_tcb->p_lastmtx = p_mtxcb->p_prevmtx;
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| 346 | mutex_release(p_mtxcb);
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| 347 | }
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| 348 | }
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| 349 |
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| 350 | #endif /* TOPPERS_mtxrela */
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| 351 |
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| 352 | /*
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| 353 | * ãã¥ã¼ããã¯ã¹ã®ããã¯
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| 354 | */
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| 355 | #ifdef TOPPERS_loc_mtx
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| 356 |
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| 357 | ER
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| 358 | loc_mtx(ID mtxid)
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| 359 | {
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| 360 | MTXCB *p_mtxcb;
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| 361 | WINFO_MTX winfo_mtx;
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| 362 | ER ercd;
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| 363 |
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| 364 | LOG_LOC_MTX_ENTER(mtxid);
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| 365 | CHECK_DISPATCH();
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| 366 | CHECK_ID(VALID_MTXID(mtxid));
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| 367 | p_mtxcb = get_mtxcb(mtxid);
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| 368 |
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| 369 | lock_cpu_dsp();
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| 370 | if (p_runtsk->raster) {
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| 371 | ercd = E_RASTER;
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| 372 | }
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| 373 | else if (MTX_CEILING(p_mtxcb)
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| 374 | && p_runtsk->bpriority < p_mtxcb->p_mtxinib->ceilpri) {
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| 375 | ercd = E_ILUSE;
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| 376 | }
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| 377 | else if (p_mtxcb->p_loctsk == NULL) {
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| 378 | mutex_acquire(p_runtsk, p_mtxcb);
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| 379 | /*
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| 380 | * åªå
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| 381 | 度ä¸éãã¥ã¼ããã¯ã¹ãããã¯ããå ´åï¼p_runtskã®åªå
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| 382 | 度
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| 383 | * ãä¸ããå¯è½æ§ããããï¼ãã£ã¹ããããå¿
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| 384 | è¦ã«ãªããã¨ã¯ãªãï¼
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| 385 | */
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| 386 | assert(p_runtsk == p_schedtsk);
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| 387 | ercd = E_OK;
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| 388 | }
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| 389 | else if (p_mtxcb->p_loctsk == p_runtsk) {
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| 390 | ercd = E_OBJ;
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| 391 | }
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| 392 | else {
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| 393 | p_runtsk->tstat = TS_WAITING_MTX;
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| 394 | wobj_make_wait((WOBJCB *) p_mtxcb, (WINFO_WOBJ *) &winfo_mtx);
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| 395 | dispatch();
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| 396 | ercd = winfo_mtx.winfo.wercd;
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| 397 | }
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| 398 | unlock_cpu_dsp();
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| 399 |
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| 400 | error_exit:
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| 401 | LOG_LOC_MTX_LEAVE(ercd);
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| 402 | return(ercd);
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| 403 | }
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| 404 |
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| 405 | #endif /* TOPPERS_loc_mtx */
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| 406 |
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| 407 | /*
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| 408 | * ãã¥ã¼ããã¯ã¹ã®ããã¯ï¼ãã¼ãªã³ã°ï¼
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| 409 | */
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| 410 | #ifdef TOPPERS_ploc_mtx
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| 411 |
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| 412 | ER
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| 413 | ploc_mtx(ID mtxid)
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| 414 | {
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| 415 | MTXCB *p_mtxcb;
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| 416 | ER ercd;
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| 417 |
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| 418 | LOG_PLOC_MTX_ENTER(mtxid);
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| 419 | CHECK_TSKCTX_UNL();
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| 420 | CHECK_ID(VALID_MTXID(mtxid));
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| 421 | p_mtxcb = get_mtxcb(mtxid);
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| 422 |
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| 423 | lock_cpu();
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| 424 | if (MTX_CEILING(p_mtxcb)
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| 425 | && p_runtsk->bpriority < p_mtxcb->p_mtxinib->ceilpri) {
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| 426 | ercd = E_ILUSE;
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| 427 | }
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| 428 | else if (p_mtxcb->p_loctsk == NULL) {
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| 429 | mutex_acquire(p_runtsk, p_mtxcb);
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| 430 | /*
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| 431 | * åªå
|
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| 432 | 度ä¸éãã¥ã¼ããã¯ã¹ãããã¯ããå ´åï¼p_runtskã®åªå
|
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| 433 | 度
|
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| 434 | * ãä¸ããå¯è½æ§ããããï¼ãã£ã¹ããããå¿
|
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| 435 | è¦ã«ãªããã¨ã¯ãªãï¼
|
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| 436 | */
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| 437 | assert(p_runtsk == p_schedtsk);
|
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| 438 | ercd = E_OK;
|
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| 439 | }
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| 440 | else if (p_mtxcb->p_loctsk == p_runtsk) {
|
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| 441 | ercd = E_OBJ;
|
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| 442 | }
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| 443 | else {
|
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| 444 | ercd = E_TMOUT;
|
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| 445 | }
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| 446 | unlock_cpu();
|
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| 447 |
|
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| 448 | error_exit:
|
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| 449 | LOG_PLOC_MTX_LEAVE(ercd);
|
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| 450 | return(ercd);
|
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| 451 | }
|
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| 452 |
|
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| 453 | #endif /* TOPPERS_ploc_mtx */
|
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| 454 |
|
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| 455 | /*
|
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| 456 | * ãã¥ã¼ããã¯ã¹ã®ããã¯ï¼ã¿ã¤ã ã¢ã¦ãããï¼
|
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| 457 | */
|
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| 458 | #ifdef TOPPERS_tloc_mtx
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| 459 |
|
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| 460 | ER
|
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| 461 | tloc_mtx(ID mtxid, TMO tmout)
|
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| 462 | {
|
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| 463 | MTXCB *p_mtxcb;
|
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| 464 | WINFO_MTX winfo_mtx;
|
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| 465 | TMEVTB tmevtb;
|
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| 466 | ER ercd;
|
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| 467 |
|
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| 468 | LOG_TLOC_MTX_ENTER(mtxid, tmout);
|
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| 469 | CHECK_DISPATCH();
|
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| 470 | CHECK_ID(VALID_MTXID(mtxid));
|
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| 471 | CHECK_PAR(VALID_TMOUT(tmout));
|
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| 472 | p_mtxcb = get_mtxcb(mtxid);
|
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| 473 |
|
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| 474 | lock_cpu_dsp();
|
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| 475 | if (p_runtsk->raster) {
|
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| 476 | ercd = E_RASTER;
|
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| 477 | }
|
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| 478 | else if (MTX_CEILING(p_mtxcb)
|
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| 479 | && p_runtsk->bpriority < p_mtxcb->p_mtxinib->ceilpri) {
|
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| 480 | ercd = E_ILUSE;
|
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| 481 | }
|
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| 482 | else if (p_mtxcb->p_loctsk == NULL) {
|
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| 483 | mutex_acquire(p_runtsk, p_mtxcb);
|
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| 484 | /*
|
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| 485 | * åªå
|
---|
| 486 | 度ä¸éãã¥ã¼ããã¯ã¹ãããã¯ããå ´åï¼p_runtskã®åªå
|
---|
| 487 | 度
|
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| 488 | * ãä¸ããå¯è½æ§ããããï¼ãã£ã¹ããããå¿
|
---|
| 489 | è¦ã«ãªããã¨ã¯ãªãï¼
|
---|
| 490 | */
|
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| 491 | assert(p_runtsk == p_schedtsk);
|
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| 492 | ercd = E_OK;
|
---|
| 493 | }
|
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| 494 | else if (p_mtxcb->p_loctsk == p_runtsk) {
|
---|
| 495 | ercd = E_OBJ;
|
---|
| 496 | }
|
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| 497 | else if (tmout == TMO_POL) {
|
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| 498 | ercd = E_TMOUT;
|
---|
| 499 | }
|
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| 500 | else {
|
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| 501 | p_runtsk->tstat = TS_WAITING_MTX;
|
---|
| 502 | wobj_make_wait_tmout((WOBJCB *) p_mtxcb, (WINFO_WOBJ *) &winfo_mtx,
|
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| 503 | &tmevtb, tmout);
|
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| 504 | dispatch();
|
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| 505 | ercd = winfo_mtx.winfo.wercd;
|
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| 506 | }
|
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| 507 | unlock_cpu_dsp();
|
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| 508 |
|
---|
| 509 | error_exit:
|
---|
| 510 | LOG_TLOC_MTX_LEAVE(ercd);
|
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| 511 | return(ercd);
|
---|
| 512 | }
|
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| 513 |
|
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| 514 | #endif /* TOPPERS_tloc_mtx */
|
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| 515 |
|
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| 516 | /*
|
---|
| 517 | * ãã¥ã¼ããã¯ã¹ã®ããã¯è§£é¤
|
---|
| 518 | */
|
---|
| 519 | #ifdef TOPPERS_unl_mtx
|
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| 520 |
|
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| 521 | ER
|
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| 522 | unl_mtx(ID mtxid)
|
---|
| 523 | {
|
---|
| 524 | MTXCB *p_mtxcb;
|
---|
| 525 | ER ercd;
|
---|
| 526 |
|
---|
| 527 | LOG_UNL_MTX_ENTER(mtxid);
|
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| 528 | CHECK_TSKCTX_UNL();
|
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| 529 | CHECK_ID(VALID_MTXID(mtxid));
|
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| 530 | p_mtxcb = get_mtxcb(mtxid);
|
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| 531 |
|
---|
| 532 | lock_cpu();
|
---|
| 533 | if (p_mtxcb != p_runtsk->p_lastmtx) {
|
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| 534 | ercd = E_OBJ;
|
---|
| 535 | }
|
---|
| 536 | else {
|
---|
| 537 | p_runtsk->p_lastmtx = p_mtxcb->p_prevmtx;
|
---|
| 538 | mutex_drop_priority(p_runtsk, p_mtxcb);
|
---|
| 539 | mutex_release(p_mtxcb);
|
---|
| 540 | if (p_runtsk != p_schedtsk) {
|
---|
| 541 | dispatch();
|
---|
| 542 | }
|
---|
| 543 | ercd = E_OK;
|
---|
| 544 | }
|
---|
| 545 | unlock_cpu();
|
---|
| 546 |
|
---|
| 547 | error_exit:
|
---|
| 548 | LOG_UNL_MTX_LEAVE(ercd);
|
---|
| 549 | return(ercd);
|
---|
| 550 | }
|
---|
| 551 |
|
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| 552 | #endif /* TOPPERS_unl_mtx */
|
---|
| 553 |
|
---|
| 554 | /*
|
---|
| 555 | * ãã¥ã¼ããã¯ã¹ã®ååæå
|
---|
| 556 | */
|
---|
| 557 | #ifdef TOPPERS_ini_mtx
|
---|
| 558 |
|
---|
| 559 | ER
|
---|
| 560 | ini_mtx(ID mtxid)
|
---|
| 561 | {
|
---|
| 562 | MTXCB *p_mtxcb, **pp_prevmtx;
|
---|
| 563 | TCB *p_loctsk;
|
---|
| 564 | ER ercd;
|
---|
| 565 |
|
---|
| 566 | LOG_INI_MTX_ENTER(mtxid);
|
---|
| 567 | CHECK_TSKCTX_UNL();
|
---|
| 568 | CHECK_ID(VALID_MTXID(mtxid));
|
---|
| 569 | p_mtxcb = get_mtxcb(mtxid);
|
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| 570 |
|
---|
| 571 | lock_cpu();
|
---|
| 572 | init_wait_queue(&(p_mtxcb->wait_queue));
|
---|
| 573 | p_loctsk = p_mtxcb->p_loctsk;
|
---|
| 574 | if (p_loctsk != NULL) {
|
---|
| 575 | p_mtxcb->p_loctsk = NULL;
|
---|
| 576 | pp_prevmtx = &(p_loctsk->p_lastmtx);
|
---|
| 577 | while (*pp_prevmtx != NULL) {
|
---|
| 578 | if (*pp_prevmtx == p_mtxcb) {
|
---|
| 579 | *pp_prevmtx = p_mtxcb->p_prevmtx;
|
---|
| 580 | break;
|
---|
| 581 | }
|
---|
| 582 | pp_prevmtx = &((*pp_prevmtx)->p_prevmtx);
|
---|
| 583 | }
|
---|
| 584 | mutex_drop_priority(p_loctsk, p_mtxcb);
|
---|
| 585 | }
|
---|
| 586 | if (p_runtsk != p_schedtsk) {
|
---|
| 587 | dispatch();
|
---|
| 588 | }
|
---|
| 589 | ercd = E_OK;
|
---|
| 590 | unlock_cpu();
|
---|
| 591 |
|
---|
| 592 | error_exit:
|
---|
| 593 | LOG_INI_MTX_LEAVE(ercd);
|
---|
| 594 | return(ercd);
|
---|
| 595 | }
|
---|
| 596 |
|
---|
| 597 | #endif /* TOPPERS_ini_mtx */
|
---|
| 598 |
|
---|
| 599 | /*
|
---|
| 600 | * ãã¥ã¼ããã¯ã¹ã®ç¶æ
|
---|
| 601 | åç
|
---|
| 602 | §
|
---|
| 603 | */
|
---|
| 604 | #ifdef TOPPERS_ref_mtx
|
---|
| 605 |
|
---|
| 606 | ER
|
---|
| 607 | ref_mtx(ID mtxid, T_RMTX *pk_rmtx)
|
---|
| 608 | {
|
---|
| 609 | MTXCB *p_mtxcb;
|
---|
| 610 | ER ercd;
|
---|
| 611 |
|
---|
| 612 | LOG_REF_MTX_ENTER(mtxid, pk_rmtx);
|
---|
| 613 | CHECK_TSKCTX_UNL();
|
---|
| 614 | CHECK_ID(VALID_MTXID(mtxid));
|
---|
| 615 | p_mtxcb = get_mtxcb(mtxid);
|
---|
| 616 |
|
---|
| 617 | lock_cpu();
|
---|
| 618 | pk_rmtx->htskid = (p_mtxcb->p_loctsk != NULL) ? TSKID(p_mtxcb->p_loctsk)
|
---|
| 619 | : TSK_NONE;
|
---|
| 620 | pk_rmtx->wtskid = wait_tskid(&(p_mtxcb->wait_queue));
|
---|
| 621 | ercd = E_OK;
|
---|
| 622 | unlock_cpu();
|
---|
| 623 |
|
---|
| 624 | error_exit:
|
---|
| 625 | LOG_REF_MTX_LEAVE(ercd, pk_rmtx);
|
---|
| 626 | return(ercd);
|
---|
| 627 | }
|
---|
| 628 |
|
---|
| 629 | #endif /* TOPPERS_ref_mtx */
|
---|