{"id":200191,"date":"2020-11-15T12:32:26","date_gmt":"2020-11-15T04:32:26","guid":{"rendered":"http:\/\/4563.org\/?p=200191"},"modified":"2020-11-15T12:32:26","modified_gmt":"2020-11-15T04:32:26","slug":"%e5%85%b3%e4%ba%8e-worker_threads-%e6%89%a7%e8%a1%8c%e9%a1%ba%e5%ba%8f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=200191","title":{"rendered":"\u5173\u4e8e worker_threads \u6267\u884c\u987a\u5e8f"},"content":{"rendered":"
\n
\n
\n

\u5173\u4e8e worker_threads \u6267\u884c\u987a\u5e8f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/i> 4<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
const { Worker, isMainThread, threadId , parentPort } = require(“worker_threads”);<\/p>\n

function a(){
var worker = new Worker( __filename , { stdout : false , stderr : false } ) ; <\/p>\n

worker.postMessage( { } ) <\/p>\n

worker.on( “message” , msg => {
console.log( ‘ 4 ‘ ) ;
console.log( ‘ 5 ‘ ) ;
console.log( ‘ 6 ‘ ) ;
} ) ;
}<\/p>\n

function b(){<\/p>\n

parentPort.on( “message” , msg => { <\/p>\n

console.log( ‘ 1 ‘ ) ;
console.log( ‘ 2 ‘ ) ;
console.log( ‘ 3 ‘ ) ; <\/p>\n

parentPort.postMessage( { } ) ; <\/p>\n

} ) ;
}<\/p>\n

if (isMainThread) {
a()
}else{
b()
}<\/p>\n

\u8bf7\u95ee\u6253\u5370\u7ed3\u679c\u4e3a\u4ec0\u4e48\u662f
1
4
5
6
2
3
\u611f\u89c9\u5e94\u8be5\u662f
1
2
3
4
5
6
\u624d\u5bf9\u554a\u3002
win10,
nodr.js14
\u5e73\u53f0 <\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (20<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : yyfearth <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u8bb0\u5f97\u597d\u50cf console.log \u6709 buffer <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : mingl0280 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6ca1\u4eba\u544a\u8bc9\u8fc7\u4f60\u7ebf\u7a0b\u7684\u6267\u884c\u987a\u5e8f\u770b\u64cd\u4f5c\u7cfb\u7edf\u5f53\u65f6\u72b6\u6001\u51b3\u5b9a\u4e48\uff1f\uff01\u8c01\u544a\u8bc9\u4f60\u7ebf\u7a0b\u6267\u884c\u5e8f\u6709\u4fdd\u8bc1\u7684\uff1f\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @mingl0280 \u6211\u662f\u89c9\u5f97\uff0c\u5e94\u8be5\u662f <\/p>\n

    \u987a\u5e8f\u5e94\u8be5\u662f a \u51fd\u6570\u7684 worker.postMessage( { } ) \u89e6\u53d1 b \u51fd\u6570 \u6267\u884c parentPort.postMessage( { } ) ;
    \u6267\u884c\u5b8c b \u7684 parentPort.postMessage( { } ) ; \u624d\u4f1a\u89e6\u53d1 \u4e3b\u7ebf\u7a0b\u7684 worker.on \u51fd\u6570\uff1b<\/p>\n

    \u8bf7\u6559\u4e00\u4e0b\uff0c\u96be\u9053\u4e0d\u662f\u8fd9\u6837\u5417\uff1f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @yyfearth console.log \u6709 buffer\uff0c\u662f\u4ec0\u4e48\u610f\u601d\u554a\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : yyfearth <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u8bb0\u5f97 console.log \u6709 io \u7684 buffer
    \u6240\u4ee5\u53ef\u80fd console.log \u8f93\u51fa\u7684\u65f6\u5019\u6bd4\u5b9e\u9645\u665a<\/p>\n

    \u4f9d\u65e7\u662f\u8bf4 \u4f60 call parentPort.postMessage( { } ) \u7684\u65f6\u5019 console \u8fd8\u5728 buffer \u91cc\u9762
    \u7136\u540e\u4e0d\u540c\u7684 worker buffer \u4e0d\u5171\u4eab
    \u6240\u4ee5\u4e24\u8005\u7684\u8f93\u51fa\u7a7f\u63d2\u4e86<\/p>\n

    \u5f53\u7136\u8fd9\u53ea\u662f\u6211\u7684\u731c\u6d4b<\/p>\n

    \u4f60\u53ef\u4ee5\u4e0d\u7528 console.log \u7528\u522b\u7684\u65b9\u6cd5\u8bd5\u8bd5 \u6bd4\u5982\u76f4\u63a5\u8f93\u51fa stdout \u5e76\u4e14 flush <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : misdake <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u89c9\u5f97\u53ef\u80fd\u7684\u4e00\u79cd 145623 \u7684\u8fd0\u884c\u987a\u5e8f\uff1a(\u4e0d\u4fdd\u8bc1\u6b63\u786e)
    \u7b2c\u4e00\u4e2a console.log(1)\u7684\u65f6\u5019\uff0c\u53d1\u8d77\u4e86\u5237 buffer \u7684\u8bf7\u6c42\uff0c\u8f93\u51fa 1 \u3002\u63a5\u4e0b\u6765\u7684 bcde \u56e0\u4e3a\u6ca1\u8d76\u4e0a\u8fd9\u6b21\u7684\u8f93\u51fa\uff0c\u88ab\u538b\u8fdb\u4e86\u4e3b\u7ebf\u7a0b\u7684 buffer\uff0c\u7b49\u5f85\u4e0b\u4e00\u6b21\u5237\u65b0\u3002
    worker \u7ebf\u7a0b\u5728\u8dd1\u7684\u65f6\u5019\uff0c1\u201c\u6b63\u5728\u201d\u8f93\u51fa\uff0c\u5237\u65b0\u65f6 worker \u7ebf\u7a0b\u7684 buffer \u91cc\u5df2\u7ecf\u6709 456 \u4e86\uff0c\u8f93\u51fa 456 \u3002(\u731c\u6d4b\u4e0d\u540c\u7ebf\u7a0b\u7684\u5237\u65b0\u662f\u8f6e\u8be2\u7684\uff0c\u800c\u4e0d\u662f\u4f18\u5148\u76ef\u7740\u4e00\u4e2a)
    \u4e0b\u6b21\u5237\u4e3b\u7ebf\u7a0b buffer \u7684\u65f6\u5019\uff0cbuffer \u91cc\u6709 23\uff0c\u8f93\u51fa 23 \u3002<\/p>\n

    \u5982\u679c\u5728 isMainThread \u5224\u65ad\u4e4b\u524d\u52a0\u4e0a\u4e00\u53e5 console.log \uff0c\u63d0\u524d\u5237\u4e00\u4e0b console.log \u7684 buffer\uff0c\u8f93\u51fa\u7684\u987a\u5e8f\u5e94\u8be5\u5c31\u548c\u4f60\u60f3\u8c61\u7684\u4e00\u6837\u4e86\u3002\u611f\u89c9\u5c31\u662f buffer \u76f8\u5173\u7684\u539f\u56e0\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @yyfearth \u611f\u8c22\u89e3\u7b54 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @misdake \u8c22\u8c22\u89e3\u7b54 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @misdake
    \u5982\u679c\u5728 isMainThread \u5224\u65ad\u4e4b\u524d\u52a0\u4e0a\u4e00\u53e5 console.log \uff0c\u63d0\u524d\u5237\u4e00\u4e0b console.log \u7684 buffer\uff0c\u8f93\u51fa\u7684\u987a\u5e8f\u5e94\u8be5\u5c31\u548c\u4f60\u60f3\u8c61\u7684\u4e00\u6837\u4e86\u3002<\/p>\n

    ===>> \u5728\u597d\u51e0\u4e2a\u5730\u65b9 \u63d0\u524d\u52a0\u4e86 console.log \uff0c\u8f93\u51fa\u8fd8\u662f\u4e71\u7684\uff0c\u6ca1\u6709\u6548\u679c\uff0c\u6211\u518d\u7814\u7a76\u770b\u770b\u6709\u6ca1\u6709\u522b\u7684\u529e\u6cd5 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : des <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5199\u662f\u6709 buffer \u7684\uff0c\u60f3\u8981\u5f97\u5230\u4f60\u9884\u671f\u7684\u7ed3\u679c
    \u8bf7\u4f7f\u7528 fs.writeFileSync(0, ‘stdout: ‘ + msg + ‘n’); <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : libook <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e3e\u4e2a\u4f8b\u5b50\u5427\uff1a
    \u4f60\u624b\u91cc\u6709 1 \u5143\u30012 \u5143\u30015 \u5143\u7684\u4e09\u5f20\u7eb8\u5e01\uff0c\u6211\u624b\u91cc\u6709 10 \u5143\u300120 \u5143\u3001100 \u5143\u4e09\u5f20\u7eb8\u5e01\uff0c\u4f60\u8d70\u5230\u4e00\u4e2a\u5b58\u94b1\u7f50\u524d\uff0c\u558a\u6211\u8fc7\u53bb\u548c\u4f60\u4e00\u8d77\u628a\u5404\u81ea\u624b\u91cc\u7684\u7eb8\u5e01\u6309\u7167\u5404\u81ea\u7684\u4ece\u5c0f\u5230\u5927\u987a\u5e8f\u585e\u8fdb\u5b58\u94b1\u7f50\uff0c\u4f46\u662f\u5b58\u94b1\u7f50\u6bcf\u6b21\u53ea\u80fd\u585e\u4e00\u5f20\u7eb8\u5e01\uff0c\u6240\u4ee5\u54b1\u4fe9\u53ea\u8981\u6ca1\u6709\u4eba\u5835\u7740\u6295\u5e01\u53e3\u5c31\u53ef\u4ee5\u5f80\u91cc\u9762\u585e\uff0c\u56e0\u4e3a\u6ca1\u6709\u5bf9\u53cc\u65b9\u585e\u5165\u7684\u987a\u5e8f\u8fdb\u884c\u63a7\u5236\uff0c\u6240\u4ee5\u4e00\u5f00\u59cb\u53ef\u80fd\u662f\u6211\u585e\u5165\u7b2c\u4e00\u5f20\u4e5f\u53ef\u80fd\u662f\u4f60\u585e\u5165\u7b2c\u4e00\u5f20\uff0c\u800c\u4e14\u6709\u53ef\u80fd\u662f\u4e00\u4e2a\u4eba\u585e\u5f97\u5feb\u8fde\u7eed\u585e\u5165\u4e24\u5f20\u7eb8\u5e01\u7b2c\u53e6\u4e2a\u4eba\u624d\u6709\u673a\u4f1a\u585e\u5165\u4e00\u5f20\uff0c\u4e5f\u53ef\u80fd\u4e00\u4e2a\u4eba\u5728\u585e\u5165\u67d0\u4e00\u5f20\u7684\u65f6\u5019\u5361\u4f4f\u4e86\u9700\u8981\u66f4\u591a\u65f6\u95f4\u8c03\u6574\u59ff\u6001\uff0c\u53e6\u4e00\u4e2a\u4eba\u5f97\u7b49\u7740\u2026\u2026\u603b\u4e4b\uff0c\u4f60\u5c31\u662f\u6ca1\u6cd5\u786e\u5b9a\u4f60\u662f\u7b2c\u4e00\u4e2a\u585e\u5165 1 \u5143\u7684\uff0c\u6211\u4e5f\u6ca1\u6cd5\u786e\u5b9a\u6211\u5565\u65f6\u5019\u80fd\u585e\u5165\u7b2c\u4e00\u8d26\uff1b\u4f46\u662f\u6211\u4eec\u90fd\u80fd\u786e\u5b9a\uff0c\u4f60\u81ea\u5df1\u585e\u5165\u7684\u987a\u5e8f\u4e00\u5b9a\u662f 1 \u5143\u30012 \u5143\u30015 \u5143\uff0c\u6211\u81ea\u5df1\u585e\u5165\u7684\u987a\u5e8f\u4e00\u5b9a\u662f 10 \u5143\u300120 \u5143\u3001100 \u5143\u3002<\/p>\n

    \u5f15\u5165\u591a\u7ebf\u7a0b\u4e4b\u540e\uff0c\u5c31\u4f1a\u6709\u4e00\u4e2a\u95ee\u9898\u53eb\u505a\u201c\u7ebf\u7a0b\u5b89\u5168\u201d\uff0c\u56e0\u4e3a\u591a\u4e2a\u7ebf\u7a0b\u662f\u540c\u65f6\u8fd0\u884c\u7684\uff0c\u6240\u4ee5\u5728\u4f60\u6ca1\u6709\u7279\u522b\u63a7\u5236\u6267\u884c\u987a\u5e8f\u6216\u786e\u4fdd\u6700\u7ec8\u4e00\u81f4\u6027\u7684\u63aa\u65bd\u7684\u60c5\u51b5\u4e0b\uff0c\u4e24\u4e2a\u7ebf\u7a0b\u7684\u6267\u884c\u987a\u5e8f\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u53d6\u51b3\u4e8e\u4f60\u7684\u64cd\u4f5c\u7cfb\u7edf\u548c\u786c\u4ef6\u5f53\u65f6\u662f\u5982\u4f55\u8c03\u5ea6\u7684\u3002<\/p>\n

    \u4e5f\u5c31\u662f\u8bf4\uff0c\u53ea\u8981\u4f60\u5f00\u8f9f\u4e86\u65b0\u7684\u7ebf\u7a0b\uff0c\u5c31\u4e0d\u8981\u5c1d\u8bd5\u53bb\u5224\u65ad\u65b0\u7ebf\u7a0b\u91cc\u7684\u7a0b\u5e8f\u5565\u65f6\u5019\u6267\u884c\u3002<\/p>\n

    \u4f60\u53ef\u4ee5\u5224\u65ad\u540c\u4e00\u7ebf\u7a0b\u5185\u7684\u6267\u884c\u987a\u5e8f\uff0c\u6bd4\u5982 123 \u5c31\u662f 123\uff0c\u4e0d\u53ef\u80fd\u662f 132\uff0c456 \u4e5f\u4e00\u5b9a\u662f 456\uff0c\u4e0d\u53ef\u80fd\u662f 465 \u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : mingl0280 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @hgjian \u7ebf\u7a0b 1 \u4f60 post \u5b8c message \u4ee5\u540e\u5c31\u662f\u4e24\u4e2a\u7ebf\u7a0b\u5e76\u884c\u6267\u884c\u7684\u2026\u2026worker.on \u53c8\u6ca1\u8bf4\u54ea\u91cc\u6765\u7684 message \uff08\u6211\u4f30\u8ba1\u8fd9\u4e2a post \u76f4\u63a5\u7ed9\u4e24\u4e2a\u51fd\u6570\u90fd\u53d1\u9001\u4e86\u4fe1\u53f7\uff09 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @des \u8c22\u8c22 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @libook \u8c22\u8c22\u4f60\u7684\u8be6\u7ec6\u8bf4\u660e <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @mingl0280 \u8c22\u8c22\u8bf4\u660e <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zy445566 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7528[ncpu]( https:\/\/github.com\/zy445566\/ncpu)\u4f7f\u7528 await \u53ef\u4ee5\u4fdd\u8bc1\u987a\u5e8f\uff0c\u4f46\u662f\u5982\u679c\u8981\u4fdd\u8bc1\u6027\u80fd\u6700\u5927\u80af\u5b9a\u4e5f\u662f Promise.all \u6765 ncpu \u7684\u4efb\u52a1\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528\u540c\u4e00\u4e2a ncpuWorker \u6765\u4fdd\u8bc1\u6267\u884c\u987a\u5e8f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zy445566 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0a\u9762\u94fe\u63a5\u591a\u6253\u4e86\u4e2a\u7a7a\u683c\u5bfc\u81f4 markdown \u6ca1\u8bc6\u522b\uff0c\u6b63\u786e\u5730\u5740\u662f\uff1a https:\/\/github.com\/zy445566\/ncpu <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zy445566 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5176\u5b9e\u7ebf\u7a0b\u5b89\u5168\u4e3b\u8981\u662f\u96c6\u4e2d\u5728 CPU cache \u7684\u95ee\u9898\uff0c\u56e0\u4e3a CPU cache \u901f\u5ea6\u6bd4\u5185\u5b58\u8981\u5feb\uff0c\u6240\u4ee5\u4f1a\u4ece\u5185\u5b58\u4e2d\u590d\u5236\u4e00\u4efd\u6570\u636e\u5230 CPU cache \u4e2d\uff0c\u8fd0\u7b97\u5b8c\u6210\u4e4b\u540e\u518d\u590d\u5236\u56de\u5185\u5b58\u3002
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hgjian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zy445566 \u8c22\u8c22\u4f60\u7684\u89e3\u91ca\uff0c\u6211\u518d\u770b\u770b\u4f60\u7684 github \u9879\u76ee <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @mingl0280 worker.postMessage \u7ed9\u4e24\u4e2a\u51fd\u6570\u53d1\u4fe1\u53f7\u7684\u8bdd 456 \u5e94\u8be5\u88ab\u6253\u5370\u4e24\u904d\u2026\u2026
    \u8fd9\u91cc\u5176\u5b9e\u76f8\u5f53\u4e8e\u7528 token \u4f20\u9012\u7684\u65b9\u5f0f\u8fdb\u884c\u4e86\u4fdd\u5e8f\uff0c\u90a3\u80af\u5b9a\u662f console \u5e26 buffer \u7684\u95ee\u9898\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

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