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
58 lines
1.5 KiB
JavaScript
58 lines
1.5 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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/* eslint-env worker */
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"use strict";
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importScripts("resource://gre/modules/osfile.jsm");
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importScripts("resource:///modules/ParseSymbols.jsm");
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async function fetchSymbolFile(url) {
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const response = await fetch(url);
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if (!response.ok) {
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throw new Error(`got error status ${response.status}`);
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}
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return response.text();
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}
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function parse(text) {
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const syms = new Map();
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// Lines look like this:
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//
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// PUBLIC 3fc74 0 test_public_symbol
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//
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// FUNC 40330 8e 0 test_func_symbol
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const symbolRegex = /\nPUBLIC ([0-9a-f]+) [0-9a-f]+ (.*)|\nFUNC ([0-9a-f]+) [0-9a-f]+ [0-9a-f]+ (.*)/g;
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let match;
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let approximateLength = 0;
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while ((match = symbolRegex.exec(text))) {
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const [address0, symbol0, address1, symbol1] = match.slice(1);
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const address = parseInt(address0 || address1, 16);
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const sym = (symbol0 || symbol1).trimRight();
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syms.set(address, sym);
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approximateLength += sym.length;
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}
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return ParseSymbols.convertSymsMapToExpectedSymFormat(syms, approximateLength);
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}
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onmessage = async e => {
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try {
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let text;
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if (e.data.filepath) {
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text = await OS.File.read(e.data.filepath, {encoding: "utf-8"});
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} else if (e.data.url) {
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text = await fetchSymbolFile(e.data.url);
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}
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const result = parse(text);
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postMessage({result}, result.map(r => r.buffer));
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} catch (error) {
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postMessage({error: error.toString()});
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}
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close();
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};
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