@loaders.gl/core/dist/esm/worker-utils/worker-farm.js

Framework-independent loaders for 3D graphics formats

import _regeneratorRuntime from "@babel/runtime/regenerator";
import _asyncToGenerator from "@babel/runtime/helpers/esm/asyncToGenerator";
import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
import _createClass from "@babel/runtime/helpers/esm/createClass";
import WorkerPool from './worker-pool';
var DEFAULT_MAX_CONCURRENCY = 5;

var WorkerFarm = function () {
  function WorkerFarm(_ref) {
    var _ref$maxConcurrency = _ref.maxConcurrency,
        maxConcurrency = _ref$maxConcurrency === void 0 ? DEFAULT_MAX_CONCURRENCY : _ref$maxConcurrency,
        onMessage = _ref.onMessage,
        _ref$onDebug = _ref.onDebug,
        onDebug = _ref$onDebug === void 0 ? function () {} : _ref$onDebug;

    _classCallCheck(this, WorkerFarm);

    this.maxConcurrency = maxConcurrency;
    this.onMessage = onMessage;
    this.onDebug = onDebug;
    this.workerPools = new Map();
  }

  _createClass(WorkerFarm, [{
    key: "setProps",
    value: function setProps(props) {
      if ('maxConcurrency' in props) {
        this.maxConcurrency = props.maxConcurrency;
      }

      if ('onDebug' in props) {
        this.onDebug = props.onDebug;
      }
    }
  }, {
    key: "destroy",
    value: function destroy() {
      this.workerPools.forEach(function (workerPool) {
        return workerPool.destroy();
      });
    }
  }, {
    key: "process",
    value: function () {
      var _process = _asyncToGenerator(_regeneratorRuntime.mark(function _callee(workerSource, workerName, data) {
        var workerPool;
        return _regeneratorRuntime.wrap(function _callee$(_context) {
          while (1) {
            switch (_context.prev = _context.next) {
              case 0:
                workerPool = this._getWorkerPool(workerSource, workerName);
                return _context.abrupt("return", workerPool.process(data));

              case 2:
              case "end":
                return _context.stop();
            }
          }
        }, _callee, this);
      }));

      function process(_x, _x2, _x3) {
        return _process.apply(this, arguments);
      }

      return process;
    }()
  }, {
    key: "_getWorkerPool",
    value: function _getWorkerPool(workerSource, workerName) {
      var workerPool = this.workerPools.get(workerName);

      if (!workerPool) {
        workerPool = new WorkerPool({
          source: workerSource,
          name: workerName,
          onMessage: this.onMessage,
          maxConcurrency: this.maxConcurrency,
          onDebug: this.onDebug
        });
        this.workerPools.set(workerName, workerPool);
      }

      return workerPool;
    }
  }]);

  return WorkerFarm;
}();

export { WorkerFarm as default };
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