2 lines
14 KiB
JavaScript
2 lines
14 KiB
JavaScript
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const e="undefined"!=typeof WebAssembly?WebAssembly:"undefined"!=typeof WXWebAssembly?WXWebAssembly:void 0,t="object"==typeof process&&null!==process&&"object"==typeof process.versions&&null!==process.versions&&"string"==typeof process.versions.node;function r(e){return"function"==typeof(null==e?void 0:e.postMessage)?e.postMessage:"function"==typeof postMessage?postMessage:void 0}function s(e){return"function"==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||"[object SharedArrayBuffer]"===Object.prototype.toString.call(e)}function o(t){try{return t instanceof e.RuntimeError}catch(e){return!1}}function n(e,t){return{__emnapi__:{type:e,payload:t}}}function i(e){if(e){if(!s(e.buffer))throw new Error("Multithread features require shared wasm memory. Try to compile with `-matomics -mbulk-memory` and use `--import-memory --shared-memory` during linking, then create WebAssembly.Memory with `shared: true` option")}else if("undefined"==typeof SharedArrayBuffer)throw new Error("Current environment does not support SharedArrayBuffer, threads are not available!")}let a=0;class d{get nextWorkerID(){return a}constructor(e){var t;if(this.unusedWorkers=[],this.runningWorkers=[],this.pthreads=Object.create(null),this.wasmModule=null,this.wasmMemory=null,this.messageEvents=new WeakMap,!e)throw new TypeError("ThreadManager(): options is not provided");this._childThread="childThread"in e&&Boolean(e.childThread),this._childThread?(this._onCreateWorker=void 0,this._reuseWorker=!1,this._beforeLoad=void 0):(this._onCreateWorker=e.onCreateWorker,this._reuseWorker=function(e){var t;if("boolean"==typeof e)return!!e&&{size:0,strict:!1};if("number"==typeof e){if(!(e>=0))throw new RangeError("reuseWorker: size must be a non-negative integer");return{size:e,strict:!1}}if(!e)return!1;const r=null!==(t=Number(e.size))&&void 0!==t?t:0,s=Boolean(e.strict);if(!(r>0)&&s)throw new RangeError("reuseWorker: size must be set to positive integer if strict is set to true");return{size:r,strict:s}}(e.reuseWorker),this._beforeLoad=e.beforeLoad),this.printErr=null!==(t=e.printErr)&&void 0!==t?t:console.error.bind(console)}init(){this._childThread||this.initMainThread()}initMainThread(){this.preparePool()}preparePool(){if(this._reuseWorker&&this._reuseWorker.size){let e=this._reuseWorker.size;for(;e--;){const e=this.allocateUnusedWorker();t&&(e.once("message",()=>{}),e.unref())}}}shouldPreloadWorkers(){return!this._childThread&&this._reuseWorker&&this._reuseWorker.size>0}loadWasmModuleToAllWorkers(){const e=Array(this.unusedWorkers.length);for(let r=0;r<this.unusedWorkers.length;++r){const s=this.unusedWorkers[r];t&&s.ref(),e[r]=this.loadWasmModuleToWorker(s).then(e=>(t&&s.unref(),e),e=>{throw t&&s.unref(),e})}return Promise.all(e).catch(e=>{throw this.terminateAllThreads(),e})}preloadWorkers(){return this.shouldPreloadWorkers()?this.loadWasmModuleToAllWorkers():Promise.resolve([])}setup(e,t){this.wasmModule=e,this.wasmMemory=t}markId(e){if(e.__emnapi_tid)return e.__emnapi_tid;const t=a+43;return a=(a+1)%536870869,this.pthreads[t]=e,e.__emnapi_tid=t,t}returnWorkerToPool(e){var r=e.__emnapi_tid;void 0!==r&&delete this.pthreads[r],this.unusedWorkers.push(e),this.runningWorkers.splice(this.runningWorkers.indexOf(e),1),delete e.__emnapi_tid,t&&e.unref()}loadWasmModuleToWorker(e,r){if(e.whenLoaded)return e.whenLoaded;const s=this.printErr,o=this._beforeLoad,a=this;return e.whenLoaded=new Promise((d,h)=>{const l=r=>{if(r.__emnapi__){const s=r.__emnapi__.type,o=r.__emnapi__.payload;"loaded"===s?(e.loaded=!0,t&&!e.__emnapi_tid&&e.unref(),d(e)):"cleanup-thread"===s&&o.tid in this.pthreads&&this.cleanThread(e,o.tid)}};e.onmessage=t=>{l(t.data),this.fireMessageEvent(e,t)},e.onerror=function(t){let r="worker sent an error!";if(void 0!==e.__emnapi_tid&&(r="worker (tid = "+e.__emnapi_tid+") sent an error!"),"message"in t){if(s(r+" "+t.message),-1!==t.message.indexOf("RuntimeError")||-1!==t.message.indexOf("unreachable"))try{a.terminateAllThreads()}catch(e){}}else s(r);throw h(t),t},t&&(e.on("message",function(t){var r,s;null===(s=(r=e).onmessage)||void 0===s||s.call(r,{
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