molstar
Version:
A comprehensive macromolecular library.
36 lines (35 loc) • 1.2 kB
JavaScript
;
/**
* Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.chunkedSubtask = chunkedSubtask;
const now_1 = require("../../mol-util/now");
async function chunkedSubtask(ctx, initialChunk, state, f, update) {
let chunkSize = Math.max(initialChunk, 0);
let globalProcessed = 0, globalTime = 0;
if (ctx.isSynchronous) {
f(Number.MAX_SAFE_INTEGER, state);
return state;
}
let start = (0, now_1.now)();
let lastSize = 0, currentTime = 0;
while ((lastSize = f(chunkSize, state)) > 0) {
globalProcessed += lastSize;
const delta = (0, now_1.now)() - start;
currentTime += delta;
globalTime += delta;
if (ctx.shouldUpdate) {
await update(ctx, state, globalProcessed);
chunkSize = Math.round(currentTime * globalProcessed / globalTime) + 1;
start = (0, now_1.now)();
currentTime = 0;
}
}
if (ctx.shouldUpdate) {
await update(ctx, state, globalProcessed);
}
return state;
}