[363] | 1 | /*
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| 2 | * TOPPERS/JSP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Just Standard Profile Kernel
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| 5 | *
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| 6 | * Copyright (C) 2000-2003 by Embedded and Real-Time Systems Laboratory
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| 7 | * Toyohashi Univ. of Technology, JAPAN
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| 8 | * Copyright (C) 2003-2004 Takagi Nobuhisa
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| 9 | *
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| 10 | * ä¸è¨èä½æ¨©è
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| 11 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 12 | * ã«ãã£ã¦å
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| 13 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 14 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 15 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 16 | å¸ï¼ä»¥ä¸ï¼
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| 17 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 18 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 19 | * 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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| 20 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 21 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 22 | * ç¨ã§ããå½¢ã§åé
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| 23 | å¸ããå ´åã«ã¯ï¼åé
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| 24 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 25 | * è
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| 26 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 27 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 28 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 29 | * ç¨ã§ããªãå½¢ã§åé
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| 30 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 31 | * ã¨ï¼
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| 32 | * (a) åé
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| 33 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 34 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 35 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 36 | * (b) åé
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| 37 | å¸ã®å½¢æ
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| 38 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 39 | * å ±åãããã¨ï¼
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| 40 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 41 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 42 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 43 | 責ãããã¨ï¼
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| 44 | *
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| 45 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 46 | ã
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| 47 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 48 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 49 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 50 | *
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| 51 | * @(#) $Id: cxx_sample2.cpp,v 1.4 2004/09/17 09:11:34 honda Exp $
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| 52 | */
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| 53 |
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| 54 | /*
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| 55 | * C++ãµã³ãã«ããã°ã©ã (2)ã®æ¬ä½
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| 56 | *
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| 57 | * ãã®ãµã³ãã«ããã°ã©ã ã¯ãå²å¦è
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| 58 | ã®é£äºãããã¼ã¹ã¨ãã¦ãC++ã®åæ©è½
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| 59 | * ã®ãã¢ãè¡ã£ã¦ããã
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| 60 | * 5人ã®å²å¦è
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| 61 | ãå·¦å³ã®ãã©ã¼ã¯ãåãéãæ
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| 62 | æã«ãããããã¯ãçºçããã
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| 63 | * ã¿ã¤ã ã¢ã¦ããæ¤åºããæç¹ã§C++ã®ä¾å¤ãéåºãã¦ããã
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| 64 | *
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| 65 | * åä½ä¸ã«'q'ãå
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| 66 | ¥åããã¨åä½ãåæ¢ãããã¨ãã§ããrestart? [y|n]ã«å¯¾
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| 67 | * ãã¦'y'ãå
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| 68 | ¥åããã°åèµ·åã'n'ãå
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| 69 | ¥åããã°çµäºããã
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| 70 | * ã¾ããåä½ä¸ã«'a'ãå
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| 71 | ¥åããã°ã¢ãã¼ãããã
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| 72 | */
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| 73 |
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| 74 | #include <t_services.h>
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| 75 | #include <cstdlib>
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| 76 | #include <new>
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| 77 | #include "kernel_id.h"
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| 78 | #include "cxx_sample2.h"
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| 79 |
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| 80 | // éãã«ãã¿ã¹ã¯ãã¹ãã¯ã©ã¹
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| 81 | // éçãªãã¸ã§ã¯ãã®ã³ã³ã¹ãã©ã¯ã¿ã¨ãã¹ãã©ã¯ã¿ã®åä½ãµã³ãã«
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| 82 | class non_multitask_test
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| 83 | {
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| 84 | int* x_;
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| 85 | public:
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| 86 | non_multitask_test()
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| 87 | : x_(new int(12345)) // ã«ã¼ãã«éåä½ç¶æ
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| 88 | ã§ã®newæ¼ç®å
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| 89 | {
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| 90 | }
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| 91 | ~non_multitask_test()
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| 92 | {
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| 93 | if (*x_== 12345)
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| 94 | syslog(LOG_NOTICE,"non-multitask test succeeded");
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| 95 | else
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| 96 | syslog(LOG_NOTICE,"non-multitask test failed");
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| 97 | delete x_; // ã«ã¼ãã«éåä½ç¶æ
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| 98 | ã§ã®deleteæ¼ç®å
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| 99 | x_ = 0;
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| 100 | }
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| 101 | } test;
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| 102 |
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| 103 | class timeout_error
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| 104 | {
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| 105 | };
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| 106 |
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| 107 | // æ¬ä¼¼ä¹±æ°
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| 108 | int rnd()
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| 109 | {
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| 110 | static unsigned int seed = 1;
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| 111 | loc_cpu();
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| 112 | seed = seed * 1566083941UL + 1;
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| 113 | unl_cpu();
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| 114 | return (seed >> 16) % 0x7fff;
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| 115 | }
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| 116 |
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| 117 | // ãã©ã¼ã¯ã¯ã©ã¹
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| 118 | class fork
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| 119 | {
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| 120 | ID semid_;
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| 121 | bool used_;
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| 122 | public:
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| 123 | explicit fork(int semid)
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| 124 | : semid_(semid), used_(false)
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| 125 | {
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| 126 | }
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| 127 | ~fork()
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| 128 | {
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| 129 | if (used_)
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| 130 | give();
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| 131 | }
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| 132 | ID id() const { return semid_; }
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| 133 | bool is_used() const { return used_; }
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| 134 | void take()
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| 135 | {
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| 136 | if (twai_sem(semid_, 500*5) == E_TMOUT)
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| 137 | throw timeout_error();
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| 138 | used_ = true;
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| 139 | }
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| 140 | void give()
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| 141 | {
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| 142 | used_ = false;
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| 143 | sig_sem(semid_);
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| 144 | }
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| 145 | };
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| 146 |
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| 147 | fork* p_fork[5];
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| 148 |
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| 149 | // å²å¦è
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| 150 | ã¯ã©ã¹
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| 151 | class philosopher
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| 152 | {
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| 153 | ID tskid_;
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| 154 | fork* left_;
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| 155 | fork* right_;
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| 156 | public:
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| 157 | explicit philosopher(int tskid, fork* left, fork* right)
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| 158 | : tskid_(tskid),
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| 159 | left_(left), right_(right)
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| 160 | {
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| 161 | syslog(LOG_NOTICE,"philosofer #%d", tskid);
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| 162 | }
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| 163 | void think()
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| 164 | {
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| 165 | syslog(LOG_NOTICE, "#%d thinking...", tskid_);
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| 166 | dly_tsk(100 * (rnd() % 5 + 1));
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| 167 | }
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| 168 | void eat()
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| 169 | {
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| 170 | syslog(LOG_NOTICE, "#%d eat up", tskid_);
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| 171 | dly_tsk(100 * (rnd() % 5 + 1));
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| 172 | }
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| 173 | void run()
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| 174 | {
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| 175 | for (;;)
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| 176 | {
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| 177 | try
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| 178 | {
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| 179 | // æå³çã«ãããããã¯ãçºçãããã
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| 180 | left_->take();
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| 181 | syslog(LOG_NOTICE, "#%d take left fork(%d)", tskid_, left_->id());
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| 182 |
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| 183 | dly_tsk(100 * (rnd() % 5 + 1));
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| 184 |
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| 185 | right_->take();
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| 186 | syslog(LOG_NOTICE, "#%d take right fork(%d)", tskid_, right_->id());
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| 187 |
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| 188 | eat();
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| 189 |
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| 190 | left_->give();
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| 191 | syslog(LOG_NOTICE, "#%d give left fork(%d)", tskid_, left_->id());
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| 192 | right_->give();
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| 193 | syslog(LOG_NOTICE, "#%d give right fork(%d)", tskid_, right_->id());
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| 194 | think();
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| 195 | }
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| 196 | catch (timeout_error&)
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| 197 | {
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| 198 | // ã¿ã¤ã ã¢ã¦ãã«ãããããããã¯ãæ¤åºããã¨ããã©ã¼ã¯ãæ¾ãã
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| 199 | syslog(LOG_NOTICE, "#%d !!!! timeout error !!!!", tskid_);
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| 200 | if (left_->is_used())
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| 201 | {
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| 202 | left_->give();
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| 203 | syslog(LOG_NOTICE, "#%d give left fork(%d)", tskid_, left_->id());
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| 204 | }
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| 205 | if (right_->is_used())
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| 206 | {
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| 207 | right_->give();
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| 208 | syslog(LOG_NOTICE, "#%d give right fork(%d)", tskid_, right_->id());
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| 209 | }
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| 210 | rot_rdq(TPRI_SELF);
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| 211 | }
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| 212 | }
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| 213 | }
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| 214 | };
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| 215 |
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| 216 | void task(VP_INT exinf)
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| 217 | {
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| 218 | _toppers_cxxrt_reset_specific(); // ã¿ã¹ã¯ã®åèµ·åãå¯è½ã«ããããã®åæåå¦ç
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| 219 | ID tskid = ID(exinf);
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| 220 | fork* left = p_fork[(tskid - 1) % 5];
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| 221 | fork* right = p_fork[(tskid - 1 + 4) % 5];
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| 222 | philosopher phil(tskid, left, right);
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| 223 | phil.run();
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| 224 | }
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| 225 |
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| 226 | // std::atexitã§ç»é²ããçµäºæé¢æ°
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| 227 | void finish()
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| 228 | {
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| 229 | syslog(LOG_NOTICE, "finish");
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| 230 | }
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| 231 |
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| 232 |
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| 233 | // ã¡ã¤ã³ã¿ã¹ã¯
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| 234 | void main_task(VP_INT exinf)
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| 235 | {
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| 236 | serial_ctl_por(TASK_PORTID, (IOCTL_CRLF | IOCTL_FCSND | IOCTL_FCRCV));
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| 237 | syslog(LOG_NOTICE,"Sample program starts (exinf = %d)", exinf);
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| 238 |
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| 239 | std::atexit(finish);
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| 240 |
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| 241 | try
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| 242 | {
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| 243 | for (;;)
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| 244 | {
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| 245 | for (ID semid = 1; semid <= 5; semid++)
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| 246 | p_fork[semid - 1] = new fork(semid);
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| 247 |
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| 248 | for (ID tskid = 1; tskid <= 5; tskid++)
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| 249 | act_tsk(tskid);
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| 250 |
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| 251 | char c;
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| 252 | do
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| 253 | {
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| 254 | serial_rea_dat(TASK_PORTID, &c, 1);
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| 255 | if (c == 'a')
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| 256 | std::abort();
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| 257 | } while (c != 'q' && c != 'Q');
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| 258 |
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| 259 | for (ID tskid = 1; tskid <= 5; tskid++)
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| 260 | {
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| 261 | ter_tsk(tskid);
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| 262 | }
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| 263 |
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| 264 | for (ID semid = 1; semid <= 5; semid++)
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| 265 | {
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| 266 | delete p_fork[semid - 1];
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| 267 | p_fork[semid - 1] = 0;
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| 268 | }
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| 269 |
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| 270 | do
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| 271 | {
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| 272 | syslog(LOG_NOTICE, "restart? [y|n] ");
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| 273 | serial_rea_dat(TASK_PORTID, &c, 1);
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| 274 | } while (c != 'y' && c != 'n');
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| 275 |
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| 276 | if (c == 'n')
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| 277 | break;
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| 278 | }
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| 279 |
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| 280 | syslog(LOG_NOTICE, "multitask test succeeded");
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| 281 | }
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| 282 | catch (std::bad_alloc&)
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| 283 | {
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| 284 | syslog(LOG_NOTICE, "multitask test failed");
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| 285 | }
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| 286 |
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| 287 | std::exit(0);
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| 288 | }
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| 289 |
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