forked from mirrors/gecko-dev
ed9ed87b3e
Pulls out the NMParser work (parsing nm results and turning them into an ArrayBuffer'd map of addresses to symbols) into a worker. For OSX we will still need to do some work to run c++filt in the background, but this gets us most of the way there. Without a Subprocess.jsm usable from a worker, we'll have to bounce data back to the main thread in order to bounce it to the c++filt worker. MozReview-Commit-ID: LZi7J1qGpmh --HG-- extra : rebase_source : 048329fb085542ecc4c8f8d872e6c4cf0b535376
68 lines
1.9 KiB
JavaScript
68 lines
1.9 KiB
JavaScript
/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* vim: set sts=2 sw=2 et tw=80: */
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"use strict";
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/* exported ParseSymbols */
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var EXPORTED_SYMBOLS = ["ParseSymbols"];
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function convertStringArrayToUint8BufferWithIndex(array, approximateLength) {
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const index = new Uint32Array(array.length + 1);
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const textEncoder = new TextEncoder();
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let buffer = new Uint8Array(approximateLength);
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let pos = 0;
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for (let i = 0; i < array.length; i++) {
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const encodedString = textEncoder.encode(array[i]);
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let size = pos + buffer.length;
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if (size < buffer.length) {
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size = 2 << Math.log(size) / Math.log(2);
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let newBuffer = new Uint8Array(size);
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newBuffer.set(buffer);
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buffer = newBuffer;
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}
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buffer.set(encodedString, pos);
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index[i] = pos;
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pos += encodedString.length;
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}
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index[array.length] = pos;
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return {index, buffer};
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}
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function convertSymsMapToExpectedSymFormat(syms, approximateSymLength) {
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const addresses = Array.from(syms.keys());
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addresses.sort((a, b) => a - b);
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const symsArray = addresses.map(addr => syms.get(addr));
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const {index, buffer} =
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convertStringArrayToUint8BufferWithIndex(symsArray, approximateSymLength);
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return [new Uint32Array(addresses), index, buffer];
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}
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function convertSymsArrayToExpectedSymFormat(symsArray, approximateSymLength) {
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const {index, buffer} =
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convertStringArrayToUint8BufferWithIndex(symsArray, approximateSymLength);
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return [index, buffer];
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}
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function convertSymsMapToDemanglerFormat(syms) {
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const addresses = Array.from(syms.keys());
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addresses.sort((a, b) => a - b);
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const symsArray = addresses.map(addr => syms.get(addr));
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const textEncoder = new TextEncoder();
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const buffer = textEncoder.encode(symsArray.join("\n"));
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return [new Uint32Array(addresses), buffer];
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}
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var ParseSymbols = {
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convertSymsMapToExpectedSymFormat,
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convertSymsArrayToExpectedSymFormat,
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convertSymsMapToDemanglerFormat,
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};
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