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
85 lines
2.7 KiB
JavaScript
85 lines
2.7 KiB
JavaScript
/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
|
|
/* vim: set sts=2 sw=2 et tw=80: */
|
|
/* eslint-env worker */
|
|
|
|
"use strict";
|
|
|
|
importScripts("resource:///modules/ParseSymbols.jsm");
|
|
|
|
class WorkerNMParser {
|
|
constructor() {
|
|
this._decoder = new TextDecoder();
|
|
this._addrToSymMap = new Map();
|
|
this._approximateLength = 0;
|
|
}
|
|
|
|
consume(arrayBuffer) {
|
|
const data = this._decoder.decode(arrayBuffer, {stream: true});
|
|
const lineRegex = /.*\n?/g;
|
|
const buffer = this._currentLine + data;
|
|
|
|
let match;
|
|
while ((match = lineRegex.exec(buffer))) {
|
|
let [line] = match;
|
|
if (line[line.length - 1] === "\n") {
|
|
this._processLine(line);
|
|
} else {
|
|
this._currentLine = line;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
finish() {
|
|
this._processLine(this._currentLine);
|
|
return {syms: this._addrToSymMap, approximateLength: this._approximateLength};
|
|
}
|
|
|
|
_processLine(line) {
|
|
// Example lines:
|
|
// 00000000028c9888 t GrFragmentProcessor::MulOutputByInputUnpremulColor(sk_sp<GrFragmentProcessor>)::PremulFragmentProcessor::onCreateGLSLInstance() const::GLFP::~GLFP()
|
|
// 00000000028c9874 t GrFragmentProcessor::MulOutputByInputUnpremulColor(sk_sp<GrFragmentProcessor>)::PremulFragmentProcessor::onCreateGLSLInstance() const::GLFP::~GLFP()
|
|
// 00000000028c9874 t GrFragmentProcessor::MulOutputByInputUnpremulColor(sk_sp<GrFragmentProcessor>)::PremulFragmentProcessor::onCreateGLSLInstance() const::GLFP::~GLFP()
|
|
// 0000000003a33730 r mozilla::OggDemuxer::~OggDemuxer()::{lambda()#1}::operator()() const::__func__
|
|
// 0000000003a33930 r mozilla::VPXDecoder::Drain()::{lambda()#1}::operator()() const::__func__
|
|
//
|
|
// Some lines have the form
|
|
// <address> ' ' <letter> ' ' <symbol>
|
|
// and some have the form
|
|
// <address> ' ' <symbol>
|
|
// The letter has a meaning, but we ignore it.
|
|
|
|
const regex = /([^ ]+) (?:. )?(.*)/;
|
|
let match = regex.exec(line);
|
|
if (match) {
|
|
const [, address, symbol] = match;
|
|
this._addrToSymMap.set(parseInt(address, 16), symbol);
|
|
this._approximateLength += symbol.length;
|
|
}
|
|
}
|
|
}
|
|
|
|
let nmParser;
|
|
onmessage = async e => {
|
|
try {
|
|
if (!nmParser) {
|
|
nmParser = new WorkerNMParser();
|
|
}
|
|
if (e.data.finish) {
|
|
const {syms, approximateLength} = nmParser.finish();
|
|
let result;
|
|
if (e.data.isDarwin) {
|
|
result = ParseSymbols.convertSymsMapToDemanglerFormat(syms);
|
|
} else {
|
|
result = ParseSymbols.convertSymsMapToExpectedSymFormat(syms, approximateLength);
|
|
}
|
|
|
|
postMessage({result}, result.map(r => r.buffer));
|
|
close();
|
|
} else {
|
|
nmParser.consume(e.data.buffer);
|
|
}
|
|
} catch (error) {
|
|
postMessage({error: error.toString()});
|
|
}
|
|
};
|