{"id":1660,"date":"2024-05-19T04:06:22","date_gmt":"2024-05-19T04:06:22","guid":{"rendered":"https:\/\/p-horlix.net\/umamusume-phazor\/?p=1660"},"modified":"2024-11-24T22:31:05","modified_gmt":"2024-11-24T22:31:05","slug":"%e3%83%97%e3%83%ad%e3%82%bb%e3%82%b9%e3%81%a8%e3%81%8b%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%a8%e3%81%8b","status":"publish","type":"post","link":"https:\/\/p-horlix.net\/umamusume-phazor\/?p=1660","title":{"rendered":"\u30d7\u30ed\u30bb\u30b9\u3068\u304b\u30b9\u30ec\u30c3\u30c9\u3068\u304b -pthread \u3084 semaphore-"},"content":{"rendered":"

\u4eca\u307e\u3067\u3088\u304f\u5206\u304b\u3063\u3066\u306a\u304b\u3063\u305f\u30d7\u30ed\u30bb\u30b9\u30fb\u30b9\u30ec\u30c3\u30c9\u30fb\u540c\u671f\u30fb\u975e\u540c\u671f\u4e91\u3005\u3092\u4eca\u306e\u3046\u3061\u306b\u307e\u3068\u3081\u3066\u304a\u3053\u3046\u3068\u601d\u3044\u3001\u30cd\u30c3\u30c8\u4e0a\u3092\u6563\u7b56\u3002<\/p>\n

\u3068\u308a\u3042\u3048\u305a\u3001\u3053\u3053<\/a>\u304b\u3089\u59cb\u307e\u308b\u66f8\u304d\u7269\u3092\u8aad\u3093\u3067\u3044\u305f\u306e\u3060\u304c\u3001\u8aad\u307f\u9032\u3081\u308b\u3046\u3061\u306b\u3061\u3087\u3063\u3068\u30a4\u30e9\u30a4\u30e9\u3057\u3066\u304d\u305f\u3002<\/p>\n

\u306a\u3093\u3067\u3053\u306e\u4eba\u306f\u3001Xinu<\/a> \u3068\u3044\u3046\u305d\u308c\u307b\u3069\u30e1\u30b8\u30e3\u30fc\u3068\u306f\u8a00\u3048\u306a\u3044\u3088\u3046\u306a\u74b0\u5883\u3067\u30c6\u30b9\u30c8\u3057\u3066\u3044\u308b\u3093\u3060\u308d\u3046\u304b\uff1f<\/p>\n

\u4eca\u3001\u73fe\u5728\u3001\u3053\u306e\u4ed5\u4e8b\u306e\u8a55\u4fa1\u304c\u5373\u3067\u304d\u308b\u307b\u3069\u306e\u529b\u91cf\u3092\u6301\u3061\u5408\u308f\u305b\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u306a\u3093\u3068\u3082\u8a00\u3048\u306a\u3044\u306e\u3060\u304c\u3001\u73fe\u5728\u3001\u4f7f\u3044\u3084\u3059\u3044\u74b0\u5883\u3092\u4e00\u3064\u9078\u3093\u3067\u30b5\u30f3\u30d7\u30eb\u8f09\u305b\u305f\u65b9\u304c\u5229\u4fbf\u6027\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u826f\u3044\u3068\u601d\u3046\u3002<\/p>\n

Linux, MacOS, Windows \u306a\u3093\u3067\u3082\u3044\u3044\u3067\u3057\u3087\u3002<\/p>\n

 <\/p>\n

\u305d\u306e\u4e00\u65b9\u3067\u3001\u30cd\u30c3\u30c8\u306b\u306f\uff08\u307e\u3068\u307e\u3063\u3066\u3044\u306a\u3044\u3082\u306e\u306e\uff09\u300c\u304a\u304a\uff01\u300d\u3068\u547b\u304d\u305f\u304f\u306a\u308b\u3088\u3046\u306a\u6709\u7528\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u843d\u3061\u3066\u3044\u308b\u3002<\/p>\n

\u6587\u53e5\u3070\u304b\u308a\u8a00\u3063\u3066\u3082\u59cb\u307e\u3089\u306a\u3044\u306e\u3067\u3001\u305d\u308c\u3089\u3092\u53ce\u96c6\u3057\u3066\u3001\u66ab\u5b9a\u7684\u306a\u30b3\u30e1\u30f3\u30c8\u3092\u3064\u3051\u3066\u3044\u304f\u3002<\/p>\n

fork() \u3068\u30d7\u30ed\u30bb\u30b9<\/h2>\n

\u307e\u305a\u306f\u3001\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n

fork.c\r\n#include <unistd.h>\r\n#include <stdio.h>\r\n#include <stdlib.h>\r\n\r\nint main(int argc, char *argv[])\r\n{\r\n    pid_t   pid;\r\n\r\n    pid = fork();\r\n    printf(\"PID=%d\\n\", pid);\r\n    exit(0);\r\n}<\/code><\/pre>\n
\u5b9f\u884c\u5f62\u5f0f\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5f97\u308b\u306e\u306f\u3001Linux or MacOS \u306a\u3089\u3001\u4e0a\u306e\u30b3\u30fc\u30c9\u3092\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3093\u3067<\/p>\n
gcc fork.c -o fork<\/code><\/pre>\n
\u3067\u3044\u3044\u3002\u305d\u308c\u3060\u3051\u3002<\/p>\n
\u5b9f\u884c\u3059\u308b\u3068<\/p>\n
% .\/fork \r\nPID=80644\r\nPID=0<\/code><\/pre>\n
\u3068\u3044\u3046\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3002
\n\u3053\u306e PID \u3068\u3044\u3046\u306e\u306f \u300c\u30b7\u30b9\u30c6\u30e0\u7ba1\u7406\u8005\u304c\u7aef\u672b\u304b\u3089 ps \u30b3\u30de\u30f3\u30c9\u53e9\u3044\u3066\u3001\u4f55\u3084\u3089\u3084\u3063\u3066\u3044\u308b PID \u306e\u3053\u3068\uff1f\u300d\u3068\u601d\u3046\u304b\u3082\u3057\u308c\u306a\u3044\u304c\u3001\u305d\u306e\u901a\u308a\u3002<\/p>\n
\u6b21\u306b\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3082\u540c\u69d8\u306b\u5b9f\u884c\u3002<\/p>\n
fork2.c\r\n#include <unistd.h>\r\n#include <stdio.h>\r\n#include <stdlib.h>\r\n\r\nint main(int argc, char *argv[])\r\n{\r\n    pid_t   pid;\r\n\r\n    pid = fork();\r\n    printf(\"PID=%d %d\\n\", pid, getpid());\r\n    getchar();\r\n    exit(0);\r\n}<\/code><\/pre>\n
\u540c\u69d8\u306b\u5b9f\u884c\u3059\u308b\u3068 getchar() \u3067\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u5165\u529b\u5f85\u3061\u3068\u306a\u308a\u4e00\u6642\u505c\u6b62\u3059\u308b\u3002<\/p>\n
\u3053\u306e\u72b6\u614b\u3067\u4ed6\u306e\u7aef\u672b\u304b\u3089 ps \u3057\u3066\u307f\u3088\u3046\u3002<\/p>\n
% ps\r\n  PID TTY           TIME CMD\r\n48613 ttys000    0:00.17 -zsh\r\n31547 ttys001    0:00.90 \/bin\/zsh -il\r\n85863 ttys001    0:00.02 .\/fork2\r\n85865 ttys001    0:00.00 .\/fork2<\/code><\/pre>\n
\u4e88\u60f3\u901a\u308a\u3001PID \u306f\u3042\u306e PID \u3060\u3063\u305f\u3002<\/p>\n
\u306a\u304a\u3001\u300c\u901a\u5e38\u5b50\u30d7\u30ed\u30bb\u30b9\u306f exec \u30b3\u30de\u30f3\u30c9\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4ed6\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8d77\u52d5\u3059\u308b\u3068\u304d\u306b\u4f7f\u308f\u308c\u308b\u300d\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u5177\u4f53\u7684\u306a\u30b3\u30fc\u30c9\u304c\u306a\u3044\u3002<\/p>\n
\u3053\u306e\u308f\u304b\u308a\u3084\u3059\u3044\u4f8b\u304c StackOverFlow<\/a> \u306b\u3042\u3063\u305f\u306e\u3067\u3001\u3042\u3052\u3066\u304a\u304f\u3002<\/p>\n
#include <stdio.h>\r\n#include <stdlib.h>\r\n#include <unistd.h>\r\n#include <sys\/types.h>\r\n\r\nint main (void) {\r\n    pid_t processId;\r\n    if ((processId = fork()) == 0) {\r\n        char app[] = \"\/bin\/echo\";\r\n        char * const argv[] = { app, \"success\", NULL };\r\n        if (execv(app, argv) < 0) {\r\n            perror(\"execv error\");\r\n        }\r\n    } else if (processId < 0) {\r\n        perror(\"fork error\");\r\n    } else {\r\n        return EXIT_SUCCESS;\r\n    }\r\n    return EXIT_FAILURE;\r\n}<\/code><\/pre>\n
 <\/p>\n
\u3068\u3053\u308d\u3067\u3001\u3053\u306e\u30b3\u30fc\u30c9\u306f\u53c2\u8003\uff08\u4e0b\u53c2\u7167\uff09\u304b\u3089\u62fe\u3063\u3066\u304d\u305f\u304c\u3001\u3053\u306e\u8457\u8005\u306e\u8aac\u660e\u306f\u660e\u5feb\u3067\u3001\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u3067\u30d7\u30ed\u30bb\u30b9\u3068\u30b9\u30ec\u30c3\u30c9\u306b\u3064\u3044\u3066\u5b9f\u306b\u7c21\u6f54\u306b\u8aac\u660e\u3057\u3066\u3044\u308b\u3002<\/p>\n
 <\/p>\n
\"\"<\/p>\n
 <\/p>\n
\u666e\u901a\u306f\u3053\u3046\u3044\u3046\u7406\u89e3\u3060\u3068\u601d\u3046\u3002<\/p>\n
\u6700\u8fd1\u3053\u306e\u30d6\u30ed\u30b0\u3067\u306f NativeMessaging \u3092\u53d6\u308a\u4e0a\u3052\u305f\u304c\u3001NativeMessaging \u306f\u901a\u5e38\u300c\u30d7\u30ed\u30bb\u30b9<\/strong>\u9593\u901a\u4fe1\u300d\u3068\u547c\u3070\u308c\u3066\u3044\u308b\u3068\u601d\u3046\u3002
\n\u4e00\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u306f chrome \u62e1\u5f35\u306e JavaScript \u30d7\u30ed\u30b0\u30e9\u30e0\u3001\u3082\u3046\u4e00\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u306f host \u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u30a2\u30d7\u30ea\u3002<\/p>\n
\u306a\u3093\u3067\u5927\u5b66\u6559\u6388\u306e\u3084\u3064\u304c\u30a4\u30e9\u30a4\u30e9\u3057\u305f\u304b\u3068\u8a00\u3048\u3070\u3001\u901a\u5e38\u306f\u30b9\u30ec\u30c3\u30c9\u3068\u3044\u3046\u3079\u304d\u3082\u306e\u3092\u30d7\u30ed\u30bb\u30b9\u3068\u547c\u3093\u3067\u3044\u305f\u304b\u3089\u3002<\/p>\n
\u5185\u7684\u306a\u6574\u5408\u6027\u304c\u53d6\u308c\u3066\u3044\u308c\u3070\u305d\u308c\u3067\u3082\u3044\u3044\u3093\u3060\u304c\u3001\u6709\u7528\u6027\u3067\u3044\u3046\u3068\u3042\u308c\uff1f\u3063\u3066\u611f\u3058\u3002\u7387\u76f4\u306b\u8a00\u3048\u3070\u300c\u4f7f\u3048\u306a\u3044\u300d\u3002\u6628\u4eca\u306e\u30a2\u30ab\u30c7\u30df\u30a2\u8efd\u8996\u306e\u98a8\u6f6e\u306f\u3053\u3093\u306a\u3068\u3053\u308d\u304b\u3089\u6765\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n
\u30b9\u30ec\u30c3\u30c9\u3068 pthread<\/h2>\n
\u305d\u3046\u3044\u3046\u308f\u3051\u3067\u6b21\u306f\u30b9\u30ec\u30c3\u30c9\u3002<\/p>\n
\u30b9\u30ec\u30c3\u30c9\u3092\u751f\u6210\u3057\u305f\u5074\u306e\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u304c\u5148\u306b\u7d42\u4e86\u3057\u3066\u3001\u540c\u6642\u306b\u30b9\u30ec\u30c3\u30c9\u304c\u610f\u56f3\u3057\u306a\u3044\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u5f37\u5236\u7d42\u4e86\u3059\u308b\u3068\u60f3\u5b9a\u3057\u306a\u3044\u72b6\u6cc1\u306b\u9665\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3053\u3053\u307e\u3067\u306e\u4f8b\u3067\u306f\u3001\u30e1\u30a4\u30f3\u95a2\u6570\u5074\u304c\u30b9\u30ec\u30c3\u30c9\u306e\u51e6\u7406\u6642\u9593\u3088\u308a\u3082\u5341\u5206\u306b\u9577\u3044\u6642\u9593\u3092\u5f85\u6a5f\u3055\u305b\u308b\u3088\u3046\u306b\u3057\u3066\u305d\u308c\u3092\u907f\u3051\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30e1\u30a4\u30f3\u95a2\u6570\u5074\u306f\u3001\u751f\u6210\u3057\u305f\u30b9\u30ec\u30c3\u30c9\u306e\u7d42\u4e86\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u9577\u77ed\u306b\u304b\u304b\u308f\u3089\u305a\u30b9\u30ec\u30c3\u30c9\u306e\u7d42\u4e86\u3092\u5f85\u3061\u5408\u308f\u305b\u308b\u3079\u304d\u3067\u3057\u3087\u3046\u3002<\/p><\/blockquote>\n
\u305d\u30fc\u305d\u30fc\u3002\u3057\u304b\u3057\u3001\u308f\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u306d\u3002<\/p>\n
\u305d\u3057\u3066\u63d0\u793a\u3055\u308c\u3066\u3044\u305f\u30b5\u30f3\u30d7\u30eb\u304c\u3053\u3061\u3089\u3002<\/p>\n
threadjoin.c\r\n#include <pthread.h>\r\n#include <unistd.h>\r\n#include <stdio.h>\r\n#include <stdlib.h>\r\n\r\nvoid *th_func(void *arg) {\r\n    puts(\"thread created\");\r\n    sleep(10);\r\n    return NULL;\r\n}\r\n\r\nint main(int argc, char *argv[])\r\n{\r\n    pthread_t th;\r\n\r\n    if (pthread_create(&th, NULL, th_func, NULL) == 0) {\r\n        puts(\"Main thread\");\r\n        pthread_join(th, NULL);\r\n        puts(\"Main exit\");\r\n    }\r\n}<\/code><\/pre>\n
sleep \u306b\u4e0e\u3048\u308b\u5909\u6570\u3092\u5909\u3048\u308b\u3068\u78ba\u304b\u306b\u305d\u306e\u9593\u3082\u30e1\u30a4\u30f3\u30b9\u30ec\u306f\u5f85\u3063\u3066\u307e\u3059\u306d\u3002<\/p>\n
\u3059\u3052\u3002<\/p>\n
\u30bb\u30de\u30d5\u30a9 semaphore<\/h2>\n
pthread \u306b\u76f8\u5f53\u3059\u308b obj-c \u306e\u6a5f\u80fd\u306f\u306a\u3044\u304b\u3068\u3042\u308c\u3053\u308c\u7269\u8272\u3057\u3066\u3044\u305f\u306e\u3060\u304c\u3001\u30bb\u30de\u30d5\u30a9 semaphore \u304c\u305d\u308c\u306b\u8a72\u5f53\u3059\u308b\u3089\u3057\u3044\u3002\u4ee5\u4e0b\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u4f5c\u6210\u3002<\/p>\n
#import <Foundation\/Foundation.h>\r\n\r\nint main(int argc, const char * argv[]) {\r\n    dispatch_semaphore_t syncSemaphore = dispatch_semaphore_create(0);\r\n\r\n    \/\/ \u975e\u540c\u671f\u30bf\u30b9\u30af\u306e\u5b9f\u884c\r\n    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{\r\n        \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406\r\n        NSLog(@\"\u975e\u540c\u671f\u30bf\u30b9\u30af\u5b9f\u884c\u4e2d\");\r\n\r\n        \/\/ \u30bf\u30b9\u30af\u304c\u7d42\u4e86\u3057\u305f\u3089\u3001\u30bb\u30de\u30d5\u30a9\u306e\u30ab\u30a6\u30f3\u30bf\u3092 +1 \u306b\u3059\u308b\r\n        dispatch_semaphore_signal(syncSemaphore);\r\n    });\r\n\r\n    \/\/ \u30bb\u30de\u30d5\u30a9\u306e\u30ab\u30a6\u30f3\u30bf\u306f\u5f53\u521d -1 \u306a\u306e\u3067\u3001\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u306f\u505c\u6b62\u3057\u3066\u3044\u308b\r\n    dispatch_semaphore_wait(syncSemaphore, DISPATCH_TIME_FOREVER);\r\n    NSLog(@\"\u975e\u540c\u671f\u30bf\u30b9\u30af\u7d42\u4e86\");\r\n    \r\n    return 0;\r\n}<\/code><\/pre>\n
\u3053\u308c\u3001\u30bb\u30de\u30d5\u30a9\u304c\u306a\u3044\u3068\u3001\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u306e\u65b9\u304c\u5148\u306b\u7d42\u4e86\u3057\u3066\u3057\u307e\u3044\u3001\u5fc5\u305a\u3057\u3082 dispatch_async \u304c\u51e6\u7406\u3055\u308c\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u3002<\/p>\n
\u300c\u975e\u540c\u671f\u51e6\u7406\u306e\u540c\u671f\u3092\u3068\u308b\u300d\u306e\u3088\u3046\u306a\u6642\u306b\u4f7f\u3046\u3089\u3057\u3044\u3002
\n\u5b9f\u884c\u7d50\u679c\u306f\u671f\u5f85\u3069\u304a\u308a<\/p>\n
\u975e\u540c\u671f\u30bf\u30b9\u30af\u5b9f\u884c\u4e2d\r\n\u975e\u540c\u671f\u30bf\u30b9\u30af\u7d42\u4e86\r\nProgram ended with exit code: 0<\/code><\/pre>\n
\u3068\u306a\u308b\u3002<\/p>\n
@synchronized \u3068\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3<\/h2>\n
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