{"id":1373,"date":"2026-10-25T17:00:00","date_gmt":"2026-10-25T08:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1373"},"modified":"2026-10-23T05:50:15","modified_gmt":"2026-10-22T20:50:15","slug":"qs-waitpid-status-reaping-20261023","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1373","title":{"rendered":"waitpid\u306e\u623b\u308a\u5024\u3001\u5b50\u306e\u7d42\u4e86\u3068\u7d42\u4e86\u60c5\u5831\u306e\u56de\u53ce\u3092\u5206\u3051\u3066\u8aad\u3080"},"content":{"rendered":"<p>\u5b50\u30d7\u30ed\u30bb\u30b9\u3092\u8d77\u52d5\u3067\u304d\u305f\u3053\u3068\u3068\u3001\u305d\u306e\u51e6\u7406\u304c\u7d42\u308f\u3063\u305f\u3053\u3068\u306f\u5225\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u51e6\u7406\u304c\u7d42\u308f\u3063\u3066\u3044\u3066\u3082\u3001\u89aa\u304c\u7d42\u4e86\u60c5\u5831\u3092\u307e\u3060\u53d7\u3051\u53d6\u3063\u3066\u3044\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002waitpid\u3092\u8aad\u3080\u3068\u304d\u306f\u3001\u3053\u306e\u4e09\u3064\u3092\u5206\u3051\u308b\u3068\u3001\u5f85\u3061\u7d9a\u3051\u308b\u7406\u7531\u3084\u30a8\u30e9\u30fc\u306e\u610f\u5473\u304c\u898b\u3048\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<section class=\"influvetor-quick-summary\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>waitpid\u306e\u6b63\u306e\u623b\u308a\u5024\u306f\u3001\u72b6\u614b\u3092\u53d7\u3051\u53d6\u3063\u305f\u5b50\u306ePID\u3067\u3059\u3002\u5b50\u306e\u7d42\u4e86\u30b3\u30fc\u30c9\u305d\u306e\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>WNOHANG\u4ed8\u304d\u30670\u304c\u8fd4\u308b\u306e\u306f\u3001\u5bfe\u8c61\u306e\u5b50\u304c\u5b58\u5728\u3059\u308b\u3082\u306e\u306e\u3001\u53d6\u5f97\u5bfe\u8c61\u306e\u72b6\u614b\u5909\u5316\u304c\u307e\u3060\u306a\u3044\u5834\u5408\u3067\u3059\u3002\u22121\u306e\u30a8\u30e9\u30fc\u3068\u306f\u5206\u3051\u307e\u3059\u3002<\/li>\n<li>\u5b50\u304c\u7d42\u4e86\u3057\u305f\u3053\u3068\u3068\u3001\u89aa\u304c\u7d42\u4e86\u60c5\u5831\u3092\u56de\u53ce\u3057\u305f\u3053\u3068\u306f\u5225\u306e\u6bb5\u968e\u3067\u3059\u3002\u901a\u5e38\u7d42\u4e86\u304b\u30b7\u30b0\u30ca\u30eb\u7d42\u4e86\u304b\u3092\u78ba\u304b\u3081\u3066\u304b\u3089\u3001\u5bfe\u5fdc\u3059\u308b\u60c5\u5831\u3092\u8aad\u307f\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u4e00\u3064\u306e\u547c\u3073\u51fa\u3057\u306b\u3001\u4e8c\u3064\u306e\u7d50\u679c\u304c\u3042\u308b<\/h2>\n<p>waitpid\u306f\u3001\u547c\u3073\u51fa\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u306e\u5b50\u306b\u3064\u3044\u3066\u72b6\u614b\u5909\u5316\u3092\u5f85\u3061\u3001\u305d\u306e\u60c5\u5831\u3092\u53d7\u3051\u53d6\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002\u3053\u3053\u3067\u306fLinux man-pages 6.19\u306ewait(2)\u306b\u6cbf\u3044\u3001<code>waitpid(pid, &amp;status, options)<\/code>\u3068\u3044\u3046\u5f62\u3092\u898b\u307e\u3059\u3002[1]<\/p>\n<p>pid\u306b\u6b63\u306e\u6570\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u305d\u306ePID\u306e\u5b50\u3092\u5bfe\u8c61\u306b\u3057\u307e\u3059\u3002\u22121\u306a\u3089\u4efb\u610f\u306e\u5b50\u30010\u306a\u3089\u547c\u3073\u51fa\u3057\u6642\u306b\u89aa\u3068\u540c\u3058\u30d7\u30ed\u30bb\u30b9\u30b0\u30eb\u30fc\u30d7\u306e\u5b50\u304c\u5bfe\u8c61\u306b\u306a\u308b\u305f\u3081\u3001\u6570\u5b57\u306e\u7b26\u53f7\u306b\u3082\u610f\u5473\u304c\u3042\u308a\u307e\u3059\u3002\u672c\u7a3f\u306e\u4f8b\u3067\u306f\u3001\u7279\u5b9a\u306e\u4e00\u3064\u306e\u5b50\u3092\u5bfe\u8c61\u306b\u3059\u308b\u6b63\u306epid\u3060\u3051\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u547c\u3073\u51fa\u3057\u306e\u623b\u308a\u5024\u3068\u3001status\u3078\u683c\u7d0d\u3055\u308c\u308b\u60c5\u5831\u306f\u5225\u3067\u3059\u3002\u623b\u308a\u5024\u304c\u6b63\u306a\u3089\u3001\u305d\u308c\u306f\u72b6\u614b\u5909\u5316\u3092\u53d6\u5f97\u3057\u305f\u5b50\u306ePID\u3067\u3059\u3002\u4e00\u65b9\u3001status\u306f\u72b6\u614b\u306e\u7a2e\u985e\u3068\u8a73\u7d30\u3092\u542b\u3080\u5024\u3067\u3001\u5c02\u7528\u306e\u30de\u30af\u30ed\u3092\u4f7f\u3063\u3066\u89e3\u91c8\u3057\u307e\u3059\u3002\u623b\u308a\u5024\u3092\u305d\u306e\u307e\u307e\u5b50\u306e\u7d42\u4e86\u30b3\u30fc\u30c9\u3068\u3057\u3066\u8868\u793a\u3057\u305f\u308a\u3001status\u5168\u4f53\u3092\u5358\u7d14\u306a\u6210\u529f\u30fb\u5931\u6557\u306e\u6570\u5024\u3068\u3057\u3066\u6271\u3063\u305f\u308a\u3059\u308b\u3068\u3001\u5225\u306e\u60c5\u5831\u3092\u8aad\u3093\u3067\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u901a\u5e38\u7d42\u4e86\u3092\u793a\u3059<code>WIFEXITED(status)<\/code>\u304c\u771f\u3060\u3063\u305f\u5834\u5408\u306b\u3001<code>WEXITSTATUS(status)<\/code>\u304b\u3089\u7d42\u4e86\u30b3\u30fc\u30c9\u3092\u53d6\u308a\u51fa\u3057\u307e\u3059\u3002\u30b7\u30b0\u30ca\u30eb\u3067\u7d42\u4e86\u3057\u305f\u306a\u3089\u3001<code>WIFSIGNALED(status)<\/code>\u3092\u78ba\u304b\u3081\u3001<code>WTERMSIG(status)<\/code>\u3067\u539f\u56e0\u306e\u30b7\u30b0\u30ca\u30eb\u756a\u53f7\u3092\u8aad\u307f\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u7a2e\u985e\u304b\u3092\u78ba\u8a8d\u3059\u308b\u524d\u306b\u3001\u8a73\u7d30\u3092\u53d6\u308a\u51fa\u3059\u9806\u756a\u306b\u306f\u3057\u307e\u305b\u3093\u3002[1]<\/p>\n<h2>\u5f85\u3064\u5834\u5408\u3068\u3001\u4eca\u3042\u308b\u60c5\u5831\u3060\u3051\u3092\u8abf\u3079\u308b\u5834\u5408<\/h2>\n<p>\u30aa\u30d7\u30b7\u30e7\u30f3\u30920\u306b\u3057\u305f\u901a\u5e38\u306ewaitpid\u306f\u3001\u5bfe\u8c61\u306e\u5b50\u304c\u307e\u3060\u7d42\u4e86\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u547c\u3073\u51fa\u3057\u305f\u30b9\u30ec\u30c3\u30c9\u3092\u5f85\u6a5f\u3055\u305b\u307e\u3059\u3002\u3059\u3067\u306b\u56de\u53ce\u3067\u304d\u308b\u7d42\u4e86\u60c5\u5831\u304c\u3042\u308c\u3070\u3001\u3059\u3050\u306b\u623b\u308a\u307e\u3059\u3002\u300cwait\u300d\u3068\u3044\u3046\u540d\u524d\u3067\u3082\u3001\u5fc5\u305a\u4e00\u5b9a\u6642\u9593\u5f85\u3064\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><code>WNOHANG<\/code>\u306f\u3001\u53d6\u5f97\u3067\u304d\u308b\u72b6\u614b\u5909\u5316\u304c\u306a\u3044\u3068\u304d\u306b\u5f85\u3061\u7d9a\u3051\u306a\u3044\u6307\u5b9a\u3067\u3059\u3002\u5bfe\u8c61\u306e\u5b50\u304c\u5b58\u5728\u3057\u3001\u307e\u3060\u5bfe\u8c61\u306e\u5909\u5316\u304c\u306a\u3051\u308c\u3070\u623b\u308a\u5024\u306f0\u3067\u3059\u30020\u3092\u300c\u5b50\u304c\u6b63\u5e38\u7d42\u4e86\u3057\u305f\u300d\u3068\u6271\u3046\u3068\u3001\u5b9f\u884c\u4e2d\u306e\u51e6\u7406\u3092\u5b8c\u4e86\u3068\u3057\u3066\u6271\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306fstatus\u3092\u7d42\u4e86\u60c5\u5831\u3068\u3057\u3066\u4f7f\u308f\u305a\u3001\u5f8c\u3067\u72b6\u614b\u3092\u8abf\u3079\u308b\u6a5f\u4f1a\u3092\u8a2d\u3051\u307e\u3059\u3002<\/p>\n<p>\u623b\u308a\u5024\u304c\u22121\u306a\u3089\u547c\u3073\u51fa\u3057\u304c\u5931\u6557\u3057\u3066\u304a\u308a\u3001errno\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5bfe\u8c61\u304c\u5b50\u3067\u306a\u3044\u3001\u3059\u3067\u306b\u56de\u53ce\u6e08\u307f\u3067\u5f85\u3064\u3079\u304d\u5b50\u304c\u306a\u3044\u3001\u3068\u3044\u3063\u305f\u5834\u5408\u306e<code>ECHILD<\/code>\u306f\u3001WNOHANG\u306e0\u3068\u306f\u9055\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u5f85\u6a5f\u4e2d\u306b\u6355\u6349\u3057\u305f\u30b7\u30b0\u30ca\u30eb\u306b\u3088\u3063\u3066<code>EINTR<\/code>\u3068\u306a\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u518d\u8a66\u884c\u3059\u308b\u304b\u3069\u3046\u304b\u306f\u3001\u305d\u306e\u30a8\u30e9\u30fc\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7d42\u4e86\u65b9\u91dd\u3092\u898b\u3066\u6c7a\u3081\u307e\u3059\u3002<\/p>\n<h2>\u7d42\u4e86\u30b3\u30fc\u30c97\u306e\u5b50\u3092\u3001\u4e00\u5ea6\u305a\u3064\u8abf\u3079\u308b<\/h2>\n<p>\u72ec\u81ea\u306e\u72b6\u614b\u30e2\u30c7\u30eb\u3067\u3001PID\u304c4242\u306e\u5b50\u3092\u8003\u3048\u307e\u3059\u3002\u3053\u308c\u306f\u8aac\u660e\u306e\u305f\u3081\u306b\u7f6e\u3044\u305f\u8b58\u5225\u5b50\u3067\u3001\u5b9f\u5728\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u64cd\u4f5c\u3057\u307e\u305b\u3093\u3002\u5b50\u306f\u30c8\u30ec\u30fc\u30b9\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u89aa\u306fSIGCHLD\u306e\u6271\u3044\u3092\u660e\u793a\u7684\u306a\u7121\u8996\u3084\u81ea\u52d5\u56de\u53ce\u3078\u5909\u66f4\u305b\u305a\u3001\u307b\u304b\u306e\u30b9\u30ec\u30c3\u30c9\u3082\u540c\u3058\u5b50\u3092\u56de\u53ce\u3057\u306a\u3044\u3068\u4eee\u5b9a\u3057\u307e\u3059\u3002\u4f7f\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u306fWNOHANG\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u6700\u521d\u306b\u5b50\u304c\u5b9f\u884c\u4e2d\u306a\u3089\u3001\u8abf\u3079\u305f\u7d50\u679c\u306f0\u3067\u3059\u3002\u6b21\u306b\u5b50\u304c\u901a\u5e38\u7d42\u4e86\u3057\u3001\u7d42\u4e86\u30b3\u30fc\u30c97\u306e\u60c5\u5831\u304c\u307e\u3060\u6b8b\u3063\u3066\u3044\u308c\u3070\u3001waitpid\u306e\u623b\u308a\u5024\u306f4242\u3068\u306a\u308a\u3001status\u3092\u6b63\u3057\u304f\u89e3\u91c8\u3059\u308b\u3068\u901a\u5e38\u7d42\u4e86\u30fb\u7d42\u4e86\u30b3\u30fc\u30c97\u3060\u3068\u5206\u304b\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u300c\u901a\u5e38\u7d42\u4e86\u300d\u306f\u3001\u7d42\u4e86\u65b9\u6cd5\u304cexit\u3084main\u304b\u3089\u306ereturn\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4ed5\u4e8b\u304c\u6210\u529f\u3057\u305f\u3001\u3068\u3044\u3046\u610f\u5473\u307e\u3067\u542b\u307f\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u7d42\u4e86\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u3068\u3001\u901a\u5e38\u306e\u5f85\u6a5f\u3067\u306f\u56de\u53ce\u3082\u884c\u308f\u308c\u307e\u3059\u3002\u540c\u3058\u5b50\u3060\u3051\u3092\u3082\u3046\u4e00\u5ea6\u5f85\u3068\u3046\u3068\u3057\u3066\u3082\u3001\u540c\u3058\u7d50\u679c\u3092\u4f55\u5ea6\u3067\u3082\u53d6\u308a\u51fa\u305b\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306f\u3001\u4e8c\u5ea6\u76ee\u306f\u22121\u3068ECHILD\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u884c\u4e2d\u306e0\u3001\u7d42\u4e86\u60c5\u5831\u3092\u53d6\u5f97\u3057\u305f\u6b63\u306ePID\u3001\u56de\u53ce\u5f8c\u306e\u22121\u3092\u3001\u540c\u3058\u300c\u307e\u3060\u8fd4\u4e8b\u304c\u306a\u3044\u300d\u3078\u307e\u3068\u3081\u306a\u3044\u3053\u3068\u304c\u8981\u70b9\u3067\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-waitpid-status-reaping-20261023-figure-ea40acd37e14.png\" alt=\"\u540c\u3058\u5b50\u3092WNOHANG\u4ed8\u304d\u3067\u78ba\u8a8d\u3059\u308b\u4e09\u6bb5\u968e\u3002\u5b9f\u884c\u4e2d\u306f0\u3001\u7d42\u4e86\u672a\u56de\u53ce\u306f\u5b50\u306ePID\u3068\u7d42\u4e86\u60c5\u5831\u3001\u56de\u53ce\u5f8c\u306f\u30de\u30a4\u30ca\u30b91\u3068ECHILD\u3002\" style=\"width:100%;max-width:100%;height:auto\"><figcaption>\u7279\u5b9a\u306e\u5b50\u3060\u3051\u3092\u5f85\u3064\u72ec\u81ea\u306e\u72b6\u614b\u30e2\u30c7\u30eb\u3002\u660e\u793a\u7684\u306aSIGCHLD\u7121\u8996\u3084\u81ea\u52d5\u56de\u53ce\u3001\u7af6\u5408\u3059\u308b\u5f85\u6a5f\u3001\u30c8\u30ec\u30fc\u30b9\u3092\u9664\u304f\u3002Linux\u306e\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u5b9f\u884c\u3057\u305f\u8a18\u9332\u3067\u306f\u306a\u3044\u3002<\/figcaption><\/figure>\n<p>\u5225\u306e\u5206\u5c90\u3068\u3057\u3066\u3001\u5b50\u304c\u30b7\u30b0\u30ca\u30eb\u3067\u7d42\u4e86\u3059\u308b\u5834\u5408\u3082\u30e2\u30c7\u30eb\u3067\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u5834\u5408\u3082\u72b6\u614b\u3092\u53d6\u5f97\u3067\u304d\u308c\u3070\u623b\u308a\u5024\u306f\u5b50\u306ePID\u3067\u3059\u304c\u3001\u901a\u5e38\u7d42\u4e86\u306e\u5206\u5c90\u3078\u5165\u3089\u305a\u3001\u30b7\u30b0\u30ca\u30eb\u7d42\u4e86\u3068\u3057\u3066\u8aad\u307f\u307e\u3059\u3002\u623b\u308a\u5024\u3060\u3051\u3067\u306f\u3001\u7d42\u4e86\u30b3\u30fc\u30c97\u3068\u30b7\u30b0\u30ca\u30eb\u7d42\u4e86\u3092\u533a\u5225\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h2>\u7d42\u4e86\u3057\u3066\u3044\u308b\u306e\u306b\u3001\u60c5\u5831\u304c\u6b8b\u3063\u3066\u3044\u308b\u7406\u7531<\/h2>\n<p>\u5b50\u304c\u7d42\u4e86\u3057\u3066\u3082\u3001\u89aa\u304c\u5f8c\u304b\u3089\u7d50\u679c\u3092\u53d7\u3051\u53d6\u308b\u305f\u3081\u306b\u3001PID\u3084\u7d42\u4e86\u72b6\u614b\u306a\u3069\u306e\u6700\u5c0f\u9650\u306e\u60c5\u5831\u304c\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002\u7d42\u4e86\u6e08\u307f\u3067\u3001\u307e\u3060\u5f85\u6a5f\u306b\u3088\u308b\u56de\u53ce\u3092\u3057\u3066\u3044\u306a\u3044\u5b50\u306f\u3001\u901a\u5e38\u300c\u30be\u30f3\u30d3\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002[1] \u8a00\u8449\u306e\u5370\u8c61\u3068\u306f\u9055\u3044\u3001\u5b50\u304c\u305d\u306e\u307e\u307e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3057\u7d9a\u3051\u3066\u3044\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u7d42\u4e86\u3057\u305f\u304b\u3069\u3046\u304b\u3092\u8abf\u3079\u308b\u8a2d\u8a08\u3068\u3001\u8ab0\u304c\u7d42\u4e86\u60c5\u5831\u3092\u56de\u53ce\u3059\u308b\u304b\u3068\u3044\u3046\u8a2d\u8a08\u3092\u4e00\u7dd2\u306b\u6c7a\u3081\u307e\u3059\u3002\u5b50\u3092\u8907\u6570\u8d77\u52d5\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u4efb\u610f\u306e\u5b50\u3092\u5f85\u3064\u51e6\u7406\u3068\u3001\u7279\u5b9a\u306e\u5b50\u3092\u5f85\u3064\u51e6\u7406\u304c\u6df7\u5728\u3057\u3066\u3044\u306a\u3044\u304b\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5225\u306e\u51e6\u7406\u304c\u3059\u3067\u306b\u56de\u53ce\u3057\u305f\u60c5\u5831\u3092\u3001\u5f8c\u304b\u3089\u3082\u3046\u4e00\u5ea6\u5f85\u3064\u3064\u3082\u308a\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u304b\u304c\u624b\u639b\u304b\u308a\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u3059\u3079\u3066\u306e\u8a2d\u5b9a\u3067\u540c\u3058\u6bb5\u968e\u304c\u6b8b\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002SIGCHLD\u3092\u660e\u793a\u7684\u306bSIG_IGN\u3078\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u3084SA_NOCLDWAIT\u3092\u4f7f\u3046\u5834\u5408\u306b\u306f\u3001\u7d42\u4e86\u5f8c\u306e\u6271\u3044\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u30de\u30cb\u30e5\u30a2\u30eb\u306f\u3001SIGCHLD\u306e\u65e2\u5b9a\u306e\u51e6\u7f6e\u304c\u7121\u8996\u3068\u8a18\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3068\u3001\u660e\u793a\u7684\u306bSIG_IGN\u3078\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3082\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002[1] \u672c\u7a3f\u306e\u4e09\u6bb5\u968e\u3092\u3001\u305d\u306e\u6761\u4ef6\u3092\u5909\u3048\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u3078\u305d\u306e\u307e\u307e\u5f53\u3066\u306f\u3081\u307e\u305b\u3093\u3002<\/p>\n<h2>\u30ed\u30b0\u306b\u306f\u3001\u5bfe\u8c61\u30fb\u623b\u308a\u5024\u30fb\u72b6\u614b\u306e\u7a2e\u985e\u3092\u6b8b\u3059<\/h2>\n<p>\u4e0d\u5177\u5408\u3092\u8abf\u3079\u308b\u969b\u306f\u3001\u5bfe\u8c61\u306b\u3057\u305fpid\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u547c\u3073\u51fa\u3057\u306e\u623b\u308a\u5024\u3092\u4e00\u7d44\u3067\u6b8b\u3057\u307e\u3059\u3002\u22121\u306a\u3089errno\u3001\u6b63\u306e\u5024\u306a\u3089\u72b6\u614b\u306e\u7a2e\u985e\u3068\u3001\u305d\u306e\u7a2e\u985e\u306b\u5bfe\u5fdc\u3059\u308b\u8a73\u7d30\u3092\u8ffd\u52a0\u3057\u307e\u3059\u30020\u306e\u56de\u306b\u4ee5\u524d\u306estatus\u306e\u5024\u304c\u898b\u3048\u3066\u3044\u3066\u3082\u3001\u305d\u308c\u3092\u65b0\u3057\u3044\u7d42\u4e86\u7d50\u679c\u3068\u3057\u3066\u6271\u308f\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<p>WUNTRACED\u3084WCONTINUED\u3092\u52a0\u3048\u308b\u3068\u3001\u505c\u6b62\u3084\u518d\u958b\u3082\u53d6\u5f97\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002\u30c8\u30ec\u30fc\u30b9\u3055\u308c\u3066\u3044\u308b\u5b50\u306b\u3082\u5225\u306e\u6761\u4ef6\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u6b63\u306ePID\u304c\u8fd4\u308b\u3053\u3068\u3092\u7d42\u4e86\u306e\u8a3c\u62e0\u3068\u3057\u3066\u6271\u3048\u307e\u305b\u3093\u3002\u672c\u7a3f\u306f\u305d\u306e\u5168\u6319\u52d5\u3092\u5b9f\u88c5\u3059\u308b\u4f8b\u3067\u306f\u306a\u304f\u3001\u30c8\u30ec\u30fc\u30b9\u3055\u308c\u3066\u3044\u306a\u3044\u7279\u5b9a\u306e\u5b50\u306b\u3064\u3044\u3066\u3001\u901a\u5e38\u7d42\u4e86\u306e\u60c5\u5831\u3092\u8aad\u3080\u57fa\u672c\u306e\u6761\u4ef6\u3092\u56fa\u5b9a\u3057\u305f\u6bd4\u8f03\u3067\u3059\u3002<\/p>\n<p>\u72ec\u81ea\u30e2\u30c7\u30eb\u3067\u306f\u3001\u5b9f\u884c\u4e2d\u306e\u7167\u4f1a\u3001\u901a\u5e38\u7d42\u4e86\u306e\u56de\u53ce\u3001\u56de\u53ce\u5f8c\u306e\u518d\u7167\u4f1a\u3001\u30b7\u30b0\u30ca\u30eb\u7d42\u4e86\u306e\u5206\u5c90\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u5b9f\u6a5f\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3001\u30b7\u30b0\u30ca\u30eb\u51e6\u7406\u3001\u30b9\u30ec\u30c3\u30c9\u9593\u306e\u7af6\u5408\u3084\u6027\u80fd\u3092\u8a66\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002WNOHANG\u3092\u77ed\u3044\u9593\u9694\u3067\u7121\u5236\u9650\u306b\u547c\u3076\u8a2d\u8a08\u3092\u63a8\u5968\u3059\u308b\u3082\u306e\u3067\u3082\u306a\u304f\u3001\u5f85\u3064\u65b9\u6cd5\u3084\u901a\u77e5\u306e\u53d7\u3051\u53d6\u308a\u65b9\u306f\u3001\u51e6\u7406\u5168\u4f53\u306e\u8a2d\u8a08\u3068\u3057\u3066\u5225\u9014\u691c\u8a0e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ol>\n<li><a href=\"https:\/\/man7.org\/linux\/man-pages\/man2\/wait.2.html\">Linux man-pages 6.19 \u2014 wait(2)<\/a>\uff08\u30da\u30fc\u30b8\u65e5\u4ed82026\u5e746\u67085\u65e5\uff09\u3002DESCRIPTION\u3001RETURN VALUE\u3001ERRORS\u3001NOTES\u30022026\u5e7410\u670823\u65e5\u306b\u63b2\u8f09HTML\u3092\u78ba\u8a8d\u3002\u4f8b\u306ePID\u3001\u72b6\u614b\u9077\u79fb\u3001\u56f3\u8868\u306f\u72ec\u81ea\u4f5c\u6210\u3002\u7279\u5b9a\u7248\u306e\u8a18\u8ff0\u3092\u53c2\u7167\u3057\u3001\u5b9f\u6a5f\u8a66\u9a13\u3084\u4ed6OS\u306e\u52d5\u4f5c\u4fdd\u8a3c\u3068\u306f\u533a\u5225\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u5b50\u30d7\u30ed\u30bb\u30b9\u3092\u8d77\u52d5\u3067\u304d\u305f\u3053\u3068\u3068\u3001\u305d\u306e\u51e6\u7406\u304c\u7d42\u308f\u3063\u305f\u3053\u3068\u306f\u5225\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u51e6\u7406\u304c\u7d42\u308f\u3063\u3066\u3044\u3066\u3082\u3001\u89aa\u304c\u7d42\u4e86\u60c5\u5831\u3092\u307e\u3060\u53d7\u3051\u53d6\u3063\u3066\u3044\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002waitpid\u3092\u8aad\u3080\u3068\u304d\u306f\u3001\u3053\u306e\u4e09\u3064\u3092\u5206\u3051\u308b\u3068\u3001\u5f85\u3061\u7d9a\u3051\u308b\u7406\u7531\u3084\u30a8\u30e9\u30fc\u306e\u610f\u5473\u304c [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1371,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[30],"tags":[244],"class_list":["post-1373","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computing","tag-linux"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-waitpid-status-reaping-20261023-featured-b1d2bb7c744c.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1373"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1373\/revisions"}],"predecessor-version":[{"id":1374,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1373\/revisions\/1374"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1371"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}