You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
1.8 KiB
106 lines
1.8 KiB
2 years ago
|
( function () {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @author Deepkolos / https://github.com/deepkolos
|
||
|
|
*/
|
||
|
|
|
||
|
|
class WorkerPool {
|
||
|
|
|
||
|
|
constructor( pool = 4 ) {
|
||
|
|
|
||
|
|
this.pool = pool;
|
||
|
|
this.queue = [];
|
||
|
|
this.workers = [];
|
||
|
|
this.workersResolve = [];
|
||
|
|
this.workerStatus = 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
_initWorker( workerId ) {
|
||
|
|
|
||
|
|
if ( ! this.workers[ workerId ] ) {
|
||
|
|
|
||
|
|
const worker = this.workerCreator();
|
||
|
|
worker.addEventListener( 'message', this._onMessage.bind( this, workerId ) );
|
||
|
|
this.workers[ workerId ] = worker;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
_getIdleWorker() {
|
||
|
|
|
||
|
|
for ( let i = 0; i < this.pool; i ++ ) if ( ! ( this.workerStatus & 1 << i ) ) return i;
|
||
|
|
return - 1;
|
||
|
|
|
||
|
|
}
|
||
|
|
_onMessage( workerId, msg ) {
|
||
|
|
|
||
|
|
const resolve = this.workersResolve[ workerId ];
|
||
|
|
resolve && resolve( msg );
|
||
|
|
if ( this.queue.length ) {
|
||
|
|
|
||
|
|
const {
|
||
|
|
resolve,
|
||
|
|
msg,
|
||
|
|
transfer
|
||
|
|
} = this.queue.shift();
|
||
|
|
this.workersResolve[ workerId ] = resolve;
|
||
|
|
this.workers[ workerId ].postMessage( msg, transfer );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
this.workerStatus ^= 1 << workerId;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
setWorkerCreator( workerCreator ) {
|
||
|
|
|
||
|
|
this.workerCreator = workerCreator;
|
||
|
|
|
||
|
|
}
|
||
|
|
setWorkerLimit( pool ) {
|
||
|
|
|
||
|
|
this.pool = pool;
|
||
|
|
|
||
|
|
}
|
||
|
|
postMessage( msg, transfer ) {
|
||
|
|
|
||
|
|
return new Promise( resolve => {
|
||
|
|
|
||
|
|
const workerId = this._getIdleWorker();
|
||
|
|
if ( workerId !== - 1 ) {
|
||
|
|
|
||
|
|
this._initWorker( workerId );
|
||
|
|
this.workerStatus |= 1 << workerId;
|
||
|
|
this.workersResolve[ workerId ] = resolve;
|
||
|
|
this.workers[ workerId ].postMessage( msg, transfer );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
this.queue.push( {
|
||
|
|
resolve,
|
||
|
|
msg,
|
||
|
|
transfer
|
||
|
|
} );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
}
|
||
|
|
dispose() {
|
||
|
|
|
||
|
|
this.workers.forEach( worker => worker.terminate() );
|
||
|
|
this.workersResolve.length = 0;
|
||
|
|
this.workers.length = 0;
|
||
|
|
this.queue.length = 0;
|
||
|
|
this.workerStatus = 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
THREE.WorkerPool = WorkerPool;
|
||
|
|
|
||
|
|
} )();
|