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2.\u8fdb\u7a0b\u6c60\u7684\u5927\u4f53\u6846\u67b6<\/h3>\n

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1.\u8fdb\u7a0b\u6c60\u7684\u521b\u5efa<\/h4>\n

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2.\u4efb\u52a1\u5217\u8868\u7684\u5236\u4f5c<\/h4>\n

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3.\u5b50\u8fdb\u7a0b\u6267\u884c\u4efb\u52a1&&\u7236\u8fdb\u7a0b\u4f20\u9012\u4efb\u52a1<\/h4>\n

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4.\u8d44\u6e90\u7684\u6e05\u7406<\/h4>\n

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\u8fdb\u7a0b\u6c60\u7684\u5404\u4e2a\u6a21\u5757\u7684\u5177\u4f53\u5b9e\u73b0<\/h2>\n

1.\u8fdb\u7a0b\u6c60\u7684\u521b\u5efa<\/h4>\n

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std::<\/span>vector<<\/span>channel><\/span> channelarray;<\/span>
\nclass<\/span> channel<\/span>
\n{<\/span>
\n public<\/span>:<\/span>
\n int<\/span> _processid;<\/span>
\n int<\/span> _write_fd;<\/span>
\n channel<\/span>(<\/span>int<\/span> processid,<\/span>int<\/span> write_fd)<\/span>
\n :<\/span>_processid<\/span>(<\/span>processid)<\/span>
\n ,<\/span>_write_fd<\/span>(<\/span>write_fd)<\/span>
\n {<\/span>
\n }<\/span>
\n}<\/span>;<\/span><\/p>\n

\u800c\u5bf9\u4e8e\u5b50\u8fdb\u7a0b\u6765\u8bf4，\u90a3\u4e48\u5b83\u5173\u95ed\u73a9\u7ba1\u9053\u7684\u5199\u7aef\u4e4b\u540e，\u63a5\u7740\u7684\u4efb\u52a1\u5c31\u662f\u53bb\u83b7\u53d6\u7236\u8fdb\u7a0b\u5728\u7ba1\u9053\u6587\u4ef6\u4e2d\u5199\u5165\u7684\u4efb\u52a1\u7801\u4ee5\u53ca\u6267\u884c\u4efb\u52a1，\u90a3\u4e48\u8fd9\u4e2a\u5185\u5bb9\u6211\u4eec\u53ef\u4ee5\u5c01\u88c5\u5230\u4e00\u4e2astart_mission\u51fd\u6570\u6a21\u5757\u4e2d，\u90a3\u4e48\u6211\u4e0b\u6587\u4f1a\u8be6\u7ec6\u89e3\u6790\u8fd9\u4e2a\u51fd\u6570<\/p>\n

\u5176\u6b21\u8fd9\u91cc\u6709\u4e00\u4e2a\u5c0f\u7ec6\u8282，\u90a3\u4e48\u5230\u65f6\u5019\u5b50\u8fdb\u7a0b\u8981\u53bb\u7ba1\u9053\u6587\u4ef6\u8bfb\u53d6\u4efb\u52a1\u7801，\u90a3\u4e48\u8fd9\u91cc\u6211\u8fdb\u884c\u4e86\u4e00\u4e2a\u91cd\u5b9a\u5411，\u4e5f\u5c31\u662f\u5c06\u5b50\u8fdb\u7a0b\u7684\u7ba1\u9053\u6587\u4ef6\u91cd\u5b9a\u5411\u5230\u6807\u51c6\u8f93\u5165\u6587\u4ef6，\u90a3\u4e48\u8fd9\u91cc\u5c31\u4f1a\u8c03\u7528dup2\u63a5\u53e3，\u90a3\u4e48\u5176\u4f1a\u5173\u95ed\u6807\u51c6\u8f93\u5165\u6587\u4ef6，\u5c06\u6807\u51c6\u8f93\u5165\u6587\u4ef6\u7684\u4e0b\u6807\u7684\u6307\u9488\u6307\u5411\u7ba1\u9053\u6587\u4ef6，\u8fd9\u6837\u505a\u7684\u597d\u5904\u5c31\u662f\u6211\u4eec\u5b50\u8fdb\u7a0b\u5728\u8bfb\u53d6\u7ba1\u9053\u6587\u4ef6\u7684\u8f93\u5165\u7684\u65f6\u5019，\u4e0d\u9700\u8981\u77e5\u9053\u7ba1\u9053\u6587\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26，\u7edf\u4e00\u7684\u53bb\u6807\u51c6\u8f93\u5165\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e2d\u8bfb\u53d6\u5373\u53ef<\/p>\n

dup2<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>,<\/span>0<\/span>)<\/span>;<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>)<\/span>;<\/span><\/p>\n

void<\/span> processpool_init<\/span>(<\/span>)<\/span>
\n{<\/span>
\n for<\/span>(<\/span>int<\/span> i=<\/span>0<\/span>;<\/span>i<<\/span>processnum;<\/span>i++<\/span>)<\/span>
\n {<\/span>
\n int<\/span> pipefd[<\/span>2<\/span>]<\/span>;<\/span>
\n int<\/span> n=<\/span>pipe<\/span>(<\/span>pipefd)<\/span>;<\/span>
\n if<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"pipe fail"<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n }<\/span>
\n int<\/span> id=<\/span>fork<\/span>(<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>id<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"fork"<\/span>)<\/span>;<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>1<\/span>]<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n }<\/span>
\n if<\/span>(<\/span>id==<\/span>0<\/span>)<\/span>
\n {<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>1<\/span>]<\/span>)<\/span>;<\/span>
\n dup2<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>,<\/span>0<\/span>)<\/span>;<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n start_mission<\/span>(<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>0<\/span>)<\/span>;<\/span>
\n }<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n channelarray.<\/span>push_back<\/span>(<\/span>channel<\/span>(<\/span>id,<\/span>pipefd[<\/span>1<\/span>]<\/span>)<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

2.\u4efb\u52a1\u5217\u8868\u7684\u5236\u4f5c<\/h4>\n

\u90a3\u4e48\u4efb\u52a1\u5217\u8868\u7684\u5236\u4f5c\u5c31\u975e\u5e38\u8f7b\u677e，\u90a3\u4e48\u5230\u65f6\u4f1a\u6211\u4eec\u4f1a\u5b9a\u4e49\u4e00\u4e2a\u5168\u5c40\u7684\u51fd\u6570\u6307\u9488\u6570\u7ec4，\u90a3\u4e48\u5176\u4e2d\u51fd\u6570\u6307\u9488\u6570\u7ec4\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\u662f\u4e00\u4e2a\u51fd\u6570\u6307\u9488\u6307\u5411\u4e00\u4e2a\u51fd\u6570，\u90a3\u4e48\u6211\u4eec\u4f1a\u5c06\u8fd9\u4e2a\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\u7ed9\u521d\u59cb\u5316\u6307\u5411\u5bf9\u5e94\u7684\u51fd\u6570，\u90a3\u4e48\u8fd9\u4e2a\u51fd\u6570\u5c31\u662f\u5b50\u8fdb\u7a0b\u8981\u6267\u884c\u7684\u4efb\u52a1，\u90a3\u4e48\u51fd\u6570\u6307\u9488\u6570\u7ec4\u7684\u4e0b\u6807\u5c31\u662f\u4efb\u52a1\u7801，\u90a3\u4e48\u521a\u624d\u6240\u8bf4\u7684\u8fd9\u4e9b\u5de5\u4f5c\u90fd\u4ea4\u7ed9mission_load\u6765\u5b8c\u6210<\/p>\n

#<\/span>define<\/span> missionnum<\/span> 4<\/span><\/span><\/span>
\ntypedef<\/span> void<\/span> (<\/span>*<\/span>mission)<\/span>(<\/span>)<\/span> ;<\/span>
\nstd::<\/span>vector<<\/span>mission><\/span> missionarray;<\/span>
\nvoid<\/span> task1<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task1"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> task2<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task2"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> task3<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task3"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> task4<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task4"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> mission_load<\/span>(<\/span>)<\/span>
\n{<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task1)<\/span>;<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task2)<\/span>;<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task3)<\/span>;<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task4)<\/span>;<\/span>
\n}<\/span><\/p>\n

3.\u5b50\u8fdb\u7a0b\u6267\u884c\u4efb\u52a1&&\u7236\u8fdb\u7a0b\u4f20\u9012\u4efb\u52a1<\/h4>\n

\u90a3\u4e48\u5b50\u8fdb\u7a0b\u6267\u884c\u4efb\u52a1\u6211\u4eec\u4e13\u95e8\u8bbe\u7f6e\u4e86\u4e00\u4e2astart_mission\u51fd\u6570\u6a21\u5757\u6765\u5b9e\u73b0，\u90a3\u4e48\u5176\u4e2d\u5728start_mission\u6a21\u5757\u4e2d，\u5c31\u4f1a\u6d89\u53ca\u5230\u4e00\u4e2a\u6b7b\u5faa\u73af，\u56e0\u4e3a\u5b50\u8fdb\u7a0b\u4e0d\u53ef\u80fd\u6267\u884c\u5b8c\u4e00\u4e2a\u4efb\u52a1\u5c31\u9000\u51fa\u4e86，\u56e0\u4e3a\u5b83\u8fd8\u8981\u7ee7\u7eed\u88ab\u7236\u8fdb\u7a0b\u5206\u914d\u6267\u884c\u4e0b\u4e00\u4e2a\u4efb\u52a1，\u5c31\u548c\u4e4b\u524d\u5b9e\u73b0shell\u5916\u58f3\u7a0b\u5e8f\u4e00\u6837，\u90a3\u4e48\u6574\u4f53\u7684\u5927\u6846\u67b6\u4e5f\u662f\u4e00\u4e2a\u6b7b\u5faa\u73af，\u90a3\u4e48\u4f60\u83b7\u53d6\u4ee5\u53ca\u6267\u884c\u5b8c\u7528\u6237\u8f93\u5165\u7684\u4e00\u4e2a\u6307\u4ee4\u4e4b\u540e\u4f60\u7684bash\u8fdb\u7a0b\u4e0d\u53ef\u80fd\u5c31\u9000\u51fa\u7ed3\u675f\u4e86\u5427，\u540c\u7406\u8fd9\u91cc\u4f60\u5b50\u8fdb\u7a0b\u5728\u83b7\u53d6\u7236\u8fdb\u7a0b\u5411\u7ba1\u9053\u6587\u4ef6\u4e2d\u5199\u5165\u7684\u4efb\u52a1\u7801\u4ee5\u53ca\u6267\u884c\u5bf9\u5e94\u7684\u51fd\u6570\u4e4b\u540e，\u90a3\u4e48\u5c31\u5faa\u73af\u7ee7\u7eed\u8bfb\u53d6\u4e0b\u4e00\u6b21\u7236\u8fdb\u7a0b\u5411\u7ba1\u9053\u6587\u4ef6\u4e2d\u7684\u5199\u5165\u7684\u4efb\u52a1\u7801，\u6240\u4ee5\u6d89\u53ca\u5230\u4e00\u4e2a\u6b7b\u5faa\u73af\u7684\u903b\u8f91<\/p>\n

\u90a3\u4e48\u8bfb\u53d6\u4efb\u52a1\u7801\u5c31\u6d89\u53ca\u5230\u8c03\u7528read\u63a5\u53e3，\u90a3\u4e48\u4ece\u4e0a\u6587\u53ef\u77e5\u6211\u4eec\u5df2\u7ecf\u5c06\u7ba1\u9053\u6587\u4ef6\u91cd\u5b9a\u5411\u5230\u6807\u51c6\u8f93\u5165\u6587\u4ef6，\u90a3\u4e48\u8fd9\u91cc\u6211\u4eec\u5c31\u4ece\u6807\u51c6\u8f93\u5165\u6587\u4ef6\u4e2d\u8bfb\u53d6\u4efb\u52a1\u7801，\u7531\u4e8e\u51fd\u6570\u6307\u9488\u6570\u7ec4\u662f\u5168\u5c40\u53d8\u91cf，\u90a3\u4e48\u83b7\u53d6\u5230\u4efb\u52a1\u7801\u4e4b\u540e，\u76f4\u63a5\u6839\u636e\u51fd\u6570\u6307\u9488\u6570\u7ec4\u6267\u884c\u76f8\u5e94\u7684\u51fd\u6570\u5373\u53ef，\u800c\u6ce8\u610f\u8fd8\u8981\u5224\u65adread\u7684\u8fd4\u56de\u503c，\u5982\u679cread\u8fd4\u56de0，\u8bf4\u660e\u4e86\u6b64\u65f6\u7ba1\u9053\u6587\u4ef6\u7684\u5199\u7aef\u5df2\u7ecf\u88ab\u5173\u95ed，\u90a3\u4e48\u7236\u8fdb\u7a0b\u5df2\u7ecf\u5173\u95ed\u4e86\u8be5\u7ba1\u9053\u6587\u4ef6\u7684\u5199\u7aef，\u6240\u4ee5\u5b50\u8fdb\u7a0b\u6ca1\u5fc5\u8981\u5728\u8fdb\u884c\u8bfb\u53d6，\u6240\u4ee5\u76f4\u63a5break，\u7136\u540e\u5b50\u8fdb\u7a0b\u9000\u51fa<\/p>\n

void<\/span> start_mission<\/span>(<\/span>)<\/span>
\n{<\/span>
\n while<\/span>(<\/span>true<\/span>)<\/span>
\n {<\/span>
\n int<\/span> staues;<\/span>
\n int<\/span> n=<\/span>read<\/span>(<\/span>0<\/span>,<\/span>&<\/span>staues,<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>n==<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>
\n {<\/span>
\n if<\/span>(<\/span>staues>=<\/span>0<\/span>&&<\/span>staues<<\/span>missionnum)<\/span>
\n {<\/span>
\n std::<\/span>cout<<<\/span>"\u6211\u662f\u5b50\u8fdb\u7a0b"<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" \u6210\u529f\u83b7\u53d6\u5230\u4efb\u52a1\u7801"<\/span><<<\/span>staues<<<\/span>std::<\/span>endl;<\/span>
\n missionarray[<\/span>staues]<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span>
\n }<\/span>else<\/span> if<\/span>(<\/span>n==<\/span>0<\/span>)<\/span>
\n {<\/span>
\n break<\/span>;<\/span>
\n }<\/span>else<\/span> if<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"read"<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n }<\/span><\/p>\n

}<\/span>
\n}<\/span><\/p>\n

\u800c\u7236\u8fdb\u7a0b\u8981\u505a\u7684\u5219\u662f\u4f20\u9012\u4efb\u52a1，\u6211\u4eec\u540c\u6837\u4e5f\u662f\u5b9a\u4e49\u4e00\u4e2aprocess_control\u51fd\u6570\u6765\u5b9e\u73b0，\u90a3\u4e48\u5176\u4e2d\u5c31\u8981\u6ce8\u610f\u7684\u5c31\u662f\u8d1f\u8f7d\u5747\u8861，\u6240\u8c13\u7684\u8d1f\u8f7d\u5747\u8861\u6307\u7684\u5c31\u662f\u6211\u4eec\u7ed9\u521b\u5efa\u51fa\u6765\u7684\u6240\u6709\u5b50\u8fdb\u7a0b\u5206\u914d\u4efb\u52a1\u7684\u65f6\u5019，\u5e0c\u671b\u8ba9\u6240\u6709\u5b50\u8fdb\u7a0b\u90fd\u5c3d\u53ef\u80fd\u7684\u5206\u914d\u6267\u884c\u5230\u4efb\u52a1，\u4e5f\u5c31\u662f\u5927\u5bb6\u6709\u4e8b\u5e72，\u90fd\u522b\u95f2\u7740，\u548c\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\u8fdb\u7a0b\u662f\u4e00\u4e2a\u9053\u7406，\u90a3\u4e48\u505a\u5230\u8d1f\u8f7d\u5747\u8861\u7684\u65b9\u5f0f\u6709\u4e24\u79cd，\u7b2c\u4e00\u79cd\u5c31\u662f\u968f\u673a\u5206\u914d，\u90a3\u4e48\u7531\u4e8e\u4e4b\u524d\u6211\u4eec\u7528\u6570\u7ec4\u8bb0\u5f55\u4e86\u6bcf\u4e00\u4e2a\u7ba1\u9053\u6587\u4ef6\u5bf9\u5e94\u7684channel\u5bf9\u8c61，\u5176\u4e2dchannel\u5bf9\u8c61\u4fdd\u5b58\u4e86\u5b50\u8fdb\u7a0b\u7684\u7f16\u53f7，\u90a3\u4e48\u5047\u8bbe\u6709n\u4e2a\u7ba1\u9053，\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u4ea7\u751f\u4e00\u4e2a0\u5230n-1\u7684\u968f\u673a\u6570，\u7136\u540e\u8c03\u7528\u5bf9\u5e94\u7684\u5b50\u8fdb\u7a0b，\u7531\u4e8e\u4ea7\u751f0\u5230n-1\u8fd9\u6bcf\u4e00\u4e2a\u6570\u7684\u6982\u7387\u80af\u5b9a\u662f\u76f8\u7b49，\u6240\u4ee5\u53ef\u4ee5\u505a\u5230\u8d1f\u8f7d\u5747\u8861<\/p>\n

\u5176\u6b21\u7b2c\u4e8c\u79cd\u65b9\u5f0f\u5219\u662f\u8f6e\u8be2，\u90a3\u4e48\u6240\u8c13\u7684\u8f6e\u8be2\u5c31\u66f4\u52a0\u76f4\u89c2，\u5c31\u662f\u6211\u4eec\u5148\u5206\u914d\u7ed9\u4efb\u52a1\u6309\u7167\u5b50\u8fdb\u7a0b\u88ab\u521b\u5efa\u7684\u987a\u5e8f\u4f9d\u6b21\u5206\u914d，\u4ece\u7b2c\u4e00\u4e2a\u4f9d\u6b21\u5206\u914d\u5230\u6700\u540e\u4e00\u4e2a，\u6700\u540e\u518d\u56de\u5230\u7b2c\u4e00\u4e2a，\u90a3\u4e48\u5176\u4e2d\u5c31\u4f1a\u6d89\u53ca\u5230\u53d6\u6a21\u8fd0\u7b97<\/p>\n

void<\/span> process_control<\/span>(<\/span>)<\/span>
\n{<\/span>
\n srand<\/span>(<\/span>(<\/span>unsigned<\/span> int<\/span>)<\/span>time<\/span>(<\/span>NULL<\/span>)<\/span>)<\/span>;<\/span>
\nint<\/span> which=<\/span>0<\/span>;<\/span>
\nfor<\/span>(<\/span>int<\/span> i=<\/span>0<\/span>;<\/span>i<<\/span>100<\/span>;<\/span>i++<\/span>)<\/span>
\n{<\/span>
\nint<\/span> cmd=<\/span>rand<\/span>(<\/span>)<\/span>%<\/span>missionnum;<\/span>
\nint<\/span> n=<\/span>write<\/span>(<\/span>channelarray[<\/span>which]<\/span>.<\/span>_write_fd,<\/span>&<\/span>cmd,<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>;<\/span>
\nif<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n{<\/span>
\nperror<\/span>(<\/span>"write"<\/span>)<\/span>;<\/span>
\nexit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n}<\/span>
\nstd::<\/span>cout<<<\/span>"father process send a message to"<\/span><<<\/span>channelarray[<\/span>which]<\/span>.<\/span>_processid<<<\/span>" cmd :"<\/span><<<\/span>cmd<<<\/span>std::<\/span>endl;<\/span><\/p>\n

which=<\/span>(<\/span>which+<\/span>1<\/span>)<\/span>%<\/span>processnum;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

4.\u8d44\u6e90\u7684\u6e05\u7406<\/h4>\n

\u90a3\u4e48\u6700\u540e\u7684\u8d44\u6e90\u6e05\u7406\u4efb\u52a1\u5219\u653e\u5230process_clean\u51fd\u6570\u6a21\u5757，\u90a3\u4e48\u8fd9\u4e2a\u6a21\u5757\u5c31\u662f\u5173\u95ed\u56de\u6536\u7ba1\u9053\u4ee5\u53ca\u7b49\u5f85\u5b50\u8fdb\u7a0b，\u90a3\u4e48\u8fd9\u91cc\u8981\u6ce8\u610f\u7684\u4e00\u70b9\u5c31\u662f，\u6211\u4eec\u6bcf\u521b\u5efa\u4e00\u4e2a\u5b50\u8fdb\u7a0b，\u90a3\u4e48\u8be5\u5b50\u8fdb\u7a0b\u4f1a\u7ee7\u627f\u4e4b\u524d\u521b\u5efa\u51fa\u7684\u6240\u6709\u7ba1\u9053\u6587\u4ef6，\u8fd9\u4f1a\u8ba9\u7ba1\u9053\u6587\u4ef6\u7684\u5f15\u7528\u8ba1\u6570\u52a0\u4e00，\u90a3\u4e48\u5b50\u8fdb\u7a0b\u4ee5\u53ca\u7236\u8fdb\u7a0b\u4f1a\u5173\u95ed\u5404\u81ea\u7684\u8bfb\u5199\u7aef，\u4f1a\u8ba9\u5176\u5f15\u7528\u8ba1\u6570\u51cf\u4e00，\u90a3\u4e48\u5bf9\u4e8e\u6700\u540e\u4e00\u4e2a\u7ba1\u9053\u6587\u4ef6\u6765\u8bf4，\u90a3\u4e48\u5b83\u53ea\u88ab\u6700\u540e\u4e00\u4e2a\u521b\u5efa\u7684\u5b50\u8fdb\u7a0b\u4ee5\u53ca\u7236\u8fdb\u7a0b\u6240\u5171\u4eab，\u90a3\u4e48\u7531\u4e8e\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u518d\u5173\u95ed\u5404\u81ea\u7684\u8bfb\u5199\u7aef，\u90a3\u4e48\u6700\u540e\u4e00\u4e2a\u7ba1\u9053\u6587\u4ef6\u7684\u8bfb\u5199\u7aef\u7684\u5f15\u7528\u8ba1\u6570\u662f1，\u90a3\u4e48\u4ee5\u6b64\u5f80\u524d\u7c7b\u63a8，\u90a3\u4e48\u524d\u9762\u7684\u7ba1\u9053\u6587\u4ef6\u7684\u8bfb\u5199\u7aef\u5c31\u662f\u4ece2\u5f00\u59cb\u9012\u589e，\u6240\u4ee5\u6211\u4eec\u5173\u95ed\u7ba1\u9053\u6587\u4ef6\u5f97\u4ece\u6700\u540e\u4e00\u4e2a\u7ba1\u9053\u6587\u4ef6\u5f80\u524d\u5173\u95ed，\u4e0d\u7136\u4f60\u4ece\u524d\u5f80\u540e\u5173\u95ed\u7684\u8bdd，\u90a3\u4e48\u7ba1\u9053\u7684\u5f15\u7528\u8ba1\u6570\u4e0d\u4f1a\u4e3a0，\u90a3\u4e48\u4f1a\u5bfc\u81f4\u8d44\u6e90\u6cc4\u6f0f\u5e76\u4e14\u5b50\u8fdb\u7a0b\u4e00\u76f4\u9677\u5165\u963b\u585e\u72b6\u6001，\u56e0\u4e3a\u7ba1\u9053\u7684\u5199\u7aef\u672a\u88ab\u5173\u95ed\u5e76\u4e14\u7236\u8fdb\u7a0b\u4e00\u76f4\u6ca1\u6709\u5199\u5165<\/p>\n

void<\/span> process_clean<\/span>(<\/span>)<\/span>
\n{<\/span>
\n for<\/span>(<\/span>int<\/span> i=<\/span>l1.<\/span>size<\/span>(<\/span>)<\/span>–<\/span>1<\/span>;<\/span>i>=<\/span>0<\/span>;<\/span>i—<\/span>)<\/span>
\n {<\/span>
\n close<\/span>(<\/span>channelarray[<\/span>i]<\/span>.<\/span>_write_fd)<\/span>;<\/span>
\n int<\/span> statues;<\/span>
\n int<\/span> n=<\/span>waitpid<\/span>(<\/span>channelarray[<\/span>i]<\/span>.<\/span>_processid,<\/span>&<\/span>statues,<\/span>0<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"waitpid"<\/span>)<\/span>;<\/span>
\n }<\/span>else<\/span>
\n {<\/span>
\n std::<\/span>cout<<<\/span>"\u5b50\u8fdb\u7a0b"<\/span><<<\/span>channelarray[<\/span>i]<\/span>.<\/span>_processid<<<\/span>"\u7b49\u5f85\u6210\u529f"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n }<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\u5b8c\u6574\u5b9e\u73b0<\/h2>\n

processpool.cpp<\/p>\n

#<\/span>include<\/span>"processpool.hpp"<\/span><\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\nmission_load<\/span>(<\/span>)<\/span>;<\/span>
\nprocesspool_init<\/span>(<\/span>)<\/span>;<\/span>
\nprocess_control<\/span>(<\/span>)<\/span>;<\/span>
\n process_clean<\/span>(<\/span>)<\/span>;<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

processpool.hpp<\/p>\n

include<<\/span>iostream><\/span>
\n#<\/span>include<\/span><unistd.h><\/span><\/span>
\n#<\/span>include<\/span><vector><\/span><\/span>
\n#<\/span>include<\/span><sys\/wait.h><\/span><\/span>
\n#<\/span>include<\/span><sys\/types.h><\/span><\/span>
\n#<\/span>include<\/span><cstdlib><\/span><\/span>
\n#<\/span>include<\/span><time.h><\/span><\/span>
\n#<\/span>include<\/span>"task.hpp"<\/span><\/span>
\n#<\/span>define<\/span> EXIT_FAILURE<\/span> 1<\/span><\/span><\/span>
\n#<\/span>define<\/span> missionnum<\/span> 4<\/span><\/span><\/span>
\nconst<\/span> int<\/span> processnum=<\/span>10<\/span>;<\/span>
\nstd::<\/span>vector<<\/span>channel><\/span> channelarray;<\/span>
\nclass<\/span> channel<\/span>
\n{<\/span>
\n public<\/span>:<\/span>
\n int<\/span> _processid;<\/span>
\n int<\/span> _write_fd;<\/span>
\n channel<\/span>(<\/span>int<\/span> processid,<\/span>int<\/span> write_fd)<\/span>
\n :<\/span>_processid<\/span>(<\/span>processid)<\/span>
\n ,<\/span>_write_fd<\/span>(<\/span>write_fd)<\/span>
\n {<\/span>
\n }<\/span>
\n}<\/span>;<\/span>
\nvoid<\/span> mission_load<\/span>(<\/span>)<\/span>
\n{<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task1)<\/span>;<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task2)<\/span>;<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task3)<\/span>;<\/span>
\n missionarray.<\/span>push_back<\/span>(<\/span>task4)<\/span>;<\/span>
\n}<\/span>
\nvoid<\/span> start_mission<\/span>(<\/span>)<\/span>
\n{<\/span>
\n while<\/span>(<\/span>true<\/span>)<\/span>
\n {<\/span>
\n int<\/span> staues;<\/span>
\n int<\/span> n=<\/span>read<\/span>(<\/span>0<\/span>,<\/span>&<\/span>staues,<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>n==<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>
\n {<\/span>
\n if<\/span>(<\/span>staues>=<\/span>0<\/span>&&<\/span>staues<<\/span>missionnum)<\/span>
\n {<\/span>
\n std::<\/span>cout<<<\/span>"\u6211\u662f\u5b50\u8fdb\u7a0b"<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" \u6210\u529f\u83b7\u53d6\u5230\u4efb\u52a1\u7801"<\/span><<<\/span>staues<<<\/span>std::<\/span>endl;<\/span>
\n missionarray[<\/span>staues]<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span>
\n }<\/span>else<\/span> if<\/span>(<\/span>n==<\/span>0<\/span>)<\/span>
\n {<\/span>
\n break<\/span>;<\/span>
\n }<\/span>else<\/span> if<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"read"<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n }<\/span><\/p>\n

}<\/span>
\n}<\/span>
\nvoid<\/span> process_control<\/span>(<\/span>)<\/span>
\n{<\/span>
\n srand<\/span>(<\/span>(<\/span>unsigned<\/span> int<\/span>)<\/span>time<\/span>(<\/span>NULL<\/span>)<\/span>)<\/span>;<\/span>
\nint<\/span> which=<\/span>0<\/span>;<\/span>
\nfor<\/span>(<\/span>int<\/span> i=<\/span>0<\/span>;<\/span>i<<\/span>100<\/span>;<\/span>i++<\/span>)<\/span>
\n{<\/span>
\nint<\/span> cmd=<\/span>rand<\/span>(<\/span>)<\/span>%<\/span>missionnum;<\/span>
\nint<\/span> n=<\/span>write<\/span>(<\/span>channelarray[<\/span>which]<\/span>.<\/span>_write_fd,<\/span>&<\/span>cmd,<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>;<\/span>
\nif<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n{<\/span>
\nperror<\/span>(<\/span>"write"<\/span>)<\/span>;<\/span>
\nexit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n}<\/span>
\nstd::<\/span>cout<<<\/span>"father process send a message to"<\/span><<<\/span>channelarray[<\/span>which]<\/span>.<\/span>_processid<<<\/span>" cmd :"<\/span><<<\/span>cmd<<<\/span>std::<\/span>endl;<\/span><\/p>\n

which=<\/span>(<\/span>which+<\/span>1<\/span>)<\/span>%<\/span>processnum;<\/span>
\n }<\/span>
\n}<\/span>
\nvoid<\/span> process_clean<\/span>(<\/span>)<\/span>
\n{<\/span>
\n for<\/span>(<\/span>int<\/span> i=<\/span>l1.<\/span>size<\/span>(<\/span>)<\/span>–<\/span>1<\/span>;<\/span>i>=<\/span>0<\/span>;<\/span>i—<\/span>)<\/span>
\n {<\/span>
\n close<\/span>(<\/span>channelarray[<\/span>i]<\/span>.<\/span>_write_fd)<\/span>;<\/span>
\n int<\/span> statues;<\/span>
\n int<\/span> n=<\/span>waitpid<\/span>(<\/span>channelarray[<\/span>i]<\/span>.<\/span>_processid,<\/span>&<\/span>statues,<\/span>0<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"waitpid"<\/span>)<\/span>;<\/span>
\n }<\/span>else<\/span>
\n {<\/span>
\n std::<\/span>cout<<<\/span>"\u5b50\u8fdb\u7a0b"<\/span><<<\/span>channelarray[<\/span>i]<\/span>.<\/span>_processid<<<\/span>"\u7b49\u5f85\u6210\u529f"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n }<\/span>
\n }<\/span>
\n}<\/span>
\nvoid<\/span> processpool_init<\/span>(<\/span>)<\/span>
\n{<\/span>
\n for<\/span>(<\/span>int<\/span> i=<\/span>0<\/span>;<\/span>i<<\/span>processnum;<\/span>i++<\/span>)<\/span>
\n {<\/span>
\n int<\/span> pipefd[<\/span>2<\/span>]<\/span>;<\/span>
\n int<\/span> n=<\/span>pipe<\/span>(<\/span>pipefd)<\/span>;<\/span>
\n if<\/span>(<\/span>n<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"pipe fail"<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n }<\/span>
\n int<\/span> id=<\/span>fork<\/span>(<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>id<<\/span>0<\/span>)<\/span>
\n {<\/span>
\n perror<\/span>(<\/span>"fork"<\/span>)<\/span>;<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>1<\/span>]<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>EXIT_FAILURE)<\/span>;<\/span>
\n }<\/span>
\n if<\/span>(<\/span>id==<\/span>0<\/span>)<\/span>
\n {<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>1<\/span>]<\/span>)<\/span>;<\/span>
\n dup2<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>,<\/span>0<\/span>)<\/span>;<\/span>
\n start_mission<\/span>(<\/span>)<\/span>;<\/span>
\n exit<\/span>(<\/span>0<\/span>)<\/span>;<\/span>
\n }<\/span>
\n close<\/span>(<\/span>pipefd[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n channelarray.<\/span>push_back<\/span>(<\/span>channel<\/span>(<\/span>id,<\/span>pipefd[<\/span>1<\/span>]<\/span>)<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

task.hpp<\/p>\n

typedef<\/span> void<\/span> (<\/span>*<\/span>mission)<\/span>(<\/span>)<\/span> ;<\/span>
\nstd::<\/span>vector<<\/span>mission><\/span> missionarray;<\/span>
\nvoid<\/span> task1<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task1"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> task2<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task2"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> task3<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task3"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span>
\nvoid<\/span> task4<\/span>(<\/span>)<\/span>
\n{<\/span>
\n std::<\/span>cout<<<\/span>"I am childprocess: "<\/span><<<\/span>getpid<\/span>(<\/span>)<\/span><<<\/span>" running task4"<\/span><<<\/span>std::<\/span>endl;<\/span>
\n}<\/span><\/p>\n

\u8fd0\u884c\u622a\u56fe： \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u7ed3\u8bed<\/h2>\n

\u90a3\u4e48\u8fd9\u5c31\u662f\u672c\u671f\u535a\u5ba2\u5173\u4e8e\u8fdb\u7a0b\u6c60\u7684\u8be6\u7ec6\u4ecb\u7ecd\u4e86，\u90a3\u4e48\u4ece\u8fdb\u7a0b\u6c60\u7684\u610f\u4e49\u4ee5\u53ca\u8fdb\u7a0b\u6c60\u7684\u5b9e\u73b0\u5927\u4f53\u6846\u67b6\u5230\u5177\u4f53\u7ec6\u8282\u8fd9\u51e0\u4e2a\u7ef4\u5ea6\u5e26\u4f60\u5168\u9762\u89e3\u6790\u8fdb\u7a0b\u6c60，\u5176\u6b21\u6ce8\u610f\u5c31\u662f\u8fdb\u7a0b\u6c60\u7684\u5e94\u7528\u573a\u666f\u4e00\u5b9a\u662f\u8981\u6267\u884c\u4efb\u52a1\u6570\u91cf\u8981\u5927\u4e8e\u5b50\u8fdb\u7a0b\u7684\u6570\u91cf，\u5982\u679c\u4f60\u8981\u6267\u884c30\u4e2a\u4efb\u52a1，\u521b\u5efa27\u4e2a\u5b50\u8fdb\u7a0b\u5176\u5b9e\u610f\u4e49\u4e0d\u5927，\u90a3\u4e48\u8bfb\u8005\u4e0b\u6765\u4e5f\u53ef\u4ee5\u81ea\u5df1\u5b9e\u73b0\u4e00\u4e2a\u5c5e\u4e8e\u4f60\u81ea\u5df1\u7684\u8fdb\u7a0b\u6c60，\u90a3\u4e48\u6211\u7684\u4e0b\u4e00\u671f\u535a\u5ba2\u4f1a\u4ecb\u7ecd\u547d\u540d\u7ba1\u9053，\u90a3\u4e48\u6211\u4f1a\u6301\u7eed\u66f4\u65b0，\u5e0c\u671b\u60a8\u80fd\u591f\u591a\u591a\u5173\u6ce8\u54e6，\u5982\u679c\u672c\u7bc7\u6587\u7ae0\u6709\u5e2e\u7ec4\u5230\u4f60，\u8fd8\u8bf7\u4e09\u8fde\u52a0\u5173\u6ce8\u54e6，\u4f60\u7684\u652f\u6301\u5c31\u662f\u6211\u521b\u4f5c\u7684\u6700\u5927\u52a8\u529b！<\/p>\n

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