{"id":2710,"date":"2023-06-08T20:43:04","date_gmt":"2023-06-08T11:43:04","guid":{"rendered":"https:\/\/sirius10.net\/blog\/wordpress\/?p=2710"},"modified":"2023-06-08T20:43:05","modified_gmt":"2023-06-08T11:43:05","slug":"post-2710","status":"publish","type":"post","link":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/2023\/06\/08\/2710\/","title":{"rendered":"\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7"},"content":{"rendered":"\n<p>\u3000\u30d7\u30ed\u30b0\u30e9\u30e0\u4e2d\u3067\u65b0\u3057\u3044\u30d7\u30ed\u30bb\u30b9\uff08\u5b50\u30d7\u30ed\u30bb\u30b9\uff09\u3092\u751f\u6210\u3057\u3066\u51e6\u7406\u3092\u884c\u3046\u969b\u3001\u30e1\u30a4\u30f3\u30d7\u30ed\u30bb\u30b9\u304b\u3089\u5b50\u30d7\u30ed\u30bb\u30b9\u3092\u7d42\u4e86\u3055\u305b\u308b\u306e\u306f kill() \u3067\u7c21\u5358\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3057\u304b\u3057\u3001\u5b50\u30d7\u30ed\u30bb\u30b9\u304c\u66f4\u306b\u5b6b\u30d7\u30ed\u30bb\u30b9\u3092\u751f\u6210\u3057\u305f\u5834\u5408\u3001\u5b6b\u30d7\u30ed\u30bb\u30b9\u3092\u30e1\u30a4\u30f3\u30d7\u30ed\u30bb\u30b9\u304b\u3089 kill() \u3067\u7d42\u4e86\u3055\u305b\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5b6b\u30d7\u30ed\u30bb\u30b9\u306e PID\uff08\u30d7\u30ed\u30bb\u30b9 ID\uff09\u304c\u308f\u304b\u3089\u306a\u3044\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30b9\u30ec\u30c3\u30c9\u3068\u7570\u306a\u308a\u3001\u30d7\u30ed\u30bb\u30b9\u306e\u30e1\u30e2\u30ea\u7a7a\u9593\u306f\u305d\u308c\u305e\u308c\u72ec\u7acb\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u76f4\u63a5\u30c7\u30fc\u30bf\u306e\u3084\u308a\u53d6\u308a\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u52d5\u304b\u3057\u3066\u307f\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u540d\u3092 a.c \u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code file\"><code>#include &lt;stdio.h>\r\n#include &lt;unistd.h>\r\n#include &lt;stdlib.h>\r\n#include &lt;signal.h>\r\n\r\nvoid start_grandchild() {\r\n    int pid;\r\n\r\n    pid = fork();\r\n    if( pid == -1 ) {\r\n        printf(\"fork faild.\\n\");\r\n    }\r\n    if( pid == 0 ) {\r\n        while( 1 ) {\r\n            printf(\"Grandchild running(pid:%d).\\n\", getpid());\r\n            sleep(3);\r\n        }\r\n    }\r\n}\r\n\r\npid_t start_child() {\r\n    int pid;\r\n\r\n    pid = fork();\r\n    if( pid == -1 ) {\r\n        printf(\"fork faild.\\n\");\r\n        return 0;\r\n    }\r\n    if( pid == 0 ) {\r\n        printf(\"start grandchild.\\n\");\r\n        start_grandchild();\r\n        while( 1 ) {\r\n            printf(\"Child running(pid:%d).\\n\", getpid());\r\n            sleep(2);\r\n        }\r\n    }\r\n\r\n    return pid;\r\n}\r\n\r\nint main(int argc, char *argv) {\r\n    pid_t pid;\r\n\r\n    printf(\"start child.\\n\");\r\n    pid = start_child();\r\n\r\n    sleep(10);\r\n\r\n    printf(\"Stop child process.\\n\");\r\n    kill(pid, SIGTERM);\r\n    sleep(10);\r\n\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n\n\n\n<p>\u3000\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code console\"><code>$ gcc a.c\r\n$ .\/a.out \r\nstart child.\r\nstart grandchild.\r\nChild running(pid:2615).\r\nGrandchild running(pid:2616).\r\nChild running(pid:2615).\r\nGrandchild running(pid:2616).\r\nChild running(pid:2615).\r\nChild running(pid:2615).\r\nGrandchild running(pid:2616).\r\nChild running(pid:2615).\r\nGrandchild running(pid:2616).\r\nStop child process.\r\nGrandchild running(pid:2616).\r\nGrandchild running(pid:2616).\r\nGrandchild running(pid:2616).\r\n$ Grandchild running(pid:2616).\r\nGrandchild running(pid:2616).\r\nGrandchild running(pid:2616).\r\nGrandchild running(pid:2616).\r\nkill 2616\r\n$<\/code><\/pre>\n\n\n\n<p>\u3000\u6700\u5f8c\u306f kill \u30b3\u30de\u30f3\u30c9\u3067\u5b6b\u30d7\u30ed\u30bb\u30b9\u3092\u7d42\u4e86\u3055\u305b\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001\u5b50\u30d7\u30ed\u30bb\u30b9\u3067\u65b0\u305f\u306b PGID\uff08\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 ID\uff09\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u305d\u306e\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7\u306b\u5bfe\u3057\u3066 signal \u3092\u9001\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000setpgid() \u3067\u5b50\u30d7\u30ed\u30bb\u30b9\u306e\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7 ID \u3092\u5909\u66f4\u3057\u3001kill() \u306e\u4ee3\u308f\u308a\u306b killpg() \u3092\u4f7f\u3063\u3066\u7d42\u4e86\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code file\"><code>#include &lt;stdio.h>\n#include &lt;unistd.h>\n#include &lt;stdlib.h>\n#include &lt;signal.h>\n\nvoid start_grandchild() {\n    int pid;\n\n    pid = fork();\n    if( pid == -1 ) {\n        printf(\"fork faild\\n\");\n    }\n    if( pid == 0 ) {\n        while( 1 ) {\n            printf(\"Grandchild running(pid:%d).\\n\", getpid());\n            sleep(3);\n        }\n    }\n}\n\npid_t start_child() {\n    int pid;\n\n    pid = fork();\n    if( pid == -1 ) {\n        printf(\"fork faild\\n\");\n        return 0;\n    }\n    if( pid == 0 ) {\n<mark style=\"background-color:#ffff00\" class=\"has-inline-color\">        pid = getpid();<\/mark>\n<mark style=\"background-color:#ffff00\" class=\"has-inline-color\">        printf(\"set pgid %d.\\n\", pid);<\/mark>\n<mark style=\"background-color:#ffff00\" class=\"has-inline-color\">        setpgid(pid, pid);<\/mark>\n        printf(\"start grandchild.\\n\");\n        start_grandchild();\n        while( 1 ) {\n            printf(\"Child running(pid:%d).\\n\", getpid());\n            sleep(2);\n        }\n    }\n\n    return pid;\n}\n\nint main(int argc, char *argv) {\n    pid_t pid;\n\n    printf(\"start child.\\n\");\n    pid = start_child();\n\n    sleep(10);\n\n    printf(\"Stop child process.\\n\");\n<mark style=\"background-color:#ffff00\" class=\"has-inline-color\">    killpg(pid, SIGTERM);<\/mark>\n    sleep(10);\n\n    return 0;\n}\n<\/code><\/pre>\n\n\n\n<p>\u3000\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code console\"><code>$ gcc a.c\r\n$ .\/a.out\r\nstart child.\r\nset pgid 2696.\r\nstart grandchild.\r\nChild running(pid:2696).\r\nGrandchild running(pid:2697).\r\nChild running(pid:2696).\r\nGrandchild running(pid:2697).\r\nChild running(pid:2696).\r\nChild running(pid:2696).\r\nGrandchild running(pid:2697).\r\nChild running(pid:2696).\r\nGrandchild running(pid:2697).\r\nStop child process.\r\n$<\/code><\/pre>\n\n\n\n<p>\u3000\u5b50\u30d7\u30ed\u30bb\u30b9\u3082\u5b6b\u30d7\u30ed\u30bb\u30b9\u3082\u7d42\u4e86\u3057\u307e\u3059\u3002\u5b50\u30d7\u30ed\u30bb\u30b9\u3067\u30b7\u30b0\u30ca\u30eb\u30cf\u30f3\u30c9\u30e9\u3092\u4f7f\u3044\u3001\u5b6b\u30d7\u30ed\u30bb\u30b9\u3092\u7d42\u4e86\u3055\u305b\u308b\u65b9\u6cd5\u3082\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u305f\u307b\u3046\u304c\u30b9\u30c3\u30ad\u30ea\u3059\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000\u30d7\u30ed\u30b0\u30e9\u30e0\u4e2d\u3067\u65b0\u3057\u3044\u30d7\u30ed\u30bb\u30b9\uff08\u5b50\u30d7\u30ed\u30bb\u30b9\uff09\u3092\u751f\u6210\u3057\u3066\u51e6\u7406\u3092\u884c\u3046\u969b\u3001\u30e1\u30a4\u30f3\u30d7\u30ed\u30bb\u30b9\u304b\u3089\u5b50\u30d7\u30ed\u30bb\u30b9\u3092\u7d42\u4e86\u3055\u305b\u308b\u306e\u306f kill() \u3067\u7c21\u5358\u306b\u3067\u304d\u307e\u3059\u3002 \u3000\u3057\u304b\u3057\u3001\u5b50\u30d7\u30ed\u30bb\u30b9\u304c\u66f4\u306b\u5b6b\u30d7\u30ed\u30bb\u30b9\u3092\u751f\u6210\u3057\u305f\u5834\u5408\u3001\u5b6b\u30d7\u30ed\u30bb\u30b9\u3092\u30e1\u30a4\u30f3\u30d7 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-2710","post","type-post","status-publish","format-standard","hentry","category-programing"],"_links":{"self":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=2710"}],"version-history":[{"count":8,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2710\/revisions"}],"predecessor-version":[{"id":2718,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2710\/revisions\/2718"}],"wp:attachment":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=2710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=2710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=2710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}