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Trace key operations

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Produce output in Chrome's event tracing format so that it can be viewed
in Chrome/Edge.
This commit is contained in:
Andrew Casey
2020-08-06 11:02:51 -07:00
parent 9569198df6
commit 5d60972ef4
22 changed files with 315 additions and 19 deletions
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41
src/executeCommandLine/executeCommandLine.ts
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@@ -476,7 +476,7 @@ namespace ts {
const currentDirectory = host.getCurrentDirectory();
const getCanonicalFileName = createGetCanonicalFileName(host.useCaseSensitiveFileNames());
changeCompilerHostLikeToUseCache(host, fileName => toPath(fileName, currentDirectory, getCanonicalFileName));
enableStatistics(sys, options);
enableStatisticsAndTracing(sys, options);
const programOptions: CreateProgramOptions = {
rootNames: fileNames,
@@ -504,7 +504,7 @@ namespace ts {
config: ParsedCommandLine
) {
const { options, fileNames, projectReferences } = config;
enableStatistics(sys, options);
enableStatisticsAndTracing(sys, options);
const host = createIncrementalCompilerHost(options, sys);
const exitStatus = ts.performIncrementalCompilation({
host,
@@ -541,7 +541,7 @@ namespace ts {
host.createProgram = (rootNames, options, host, oldProgram, configFileParsingDiagnostics, projectReferences) => {
Debug.assert(rootNames !== undefined || (options === undefined && !!oldProgram));
if (options !== undefined) {
enableStatistics(sys, options);
enableStatisticsAndTracing(sys, options);
}
return compileUsingBuilder(rootNames, options, host, oldProgram, configFileParsingDiagnostics, projectReferences);
};
@@ -610,15 +610,44 @@ namespace ts {
return system === sys && (compilerOptions.diagnostics || compilerOptions.extendedDiagnostics);
}
function enableStatistics(sys: System, compilerOptions: CompilerOptions) {
if (canReportDiagnostics(sys, compilerOptions)) {
let traceCount = 0;
let tracingFd: number | undefined;
function enableStatisticsAndTracing(system: System, compilerOptions: CompilerOptions) {
if (canReportDiagnostics(system, compilerOptions)) {
performance.enable();
}
Debug.assert(!tracingFd, "Tracing already started");
if (system === sys) {
const tracePath = compilerOptions.generateTrace;
if (tracePath) {
const extension = getAnyExtensionFromPath(tracePath);
tracingFd = sys.openFile(changeAnyExtension(tracePath, `${++traceCount}${extension}`), "w");
if (tracingFd) {
tracing.startTracing(event => sys.write(event, tracingFd));
}
}
}
}
function reportStatistics(sys: System, program: Program) {
let statistics: Statistic[];
const compilerOptions = program.getCompilerOptions();
if (tracingFd) {
tracing.stopTracing();
sys.closeFile(tracingFd);
tracingFd = undefined;
const typesPath = changeAnyExtension(compilerOptions.generateTrace!, `${traceCount}.types.json`);
const typesFd = sys.openFile(typesPath, "w");
if (typesFd) {
tracing.dumpTypes(program.getTypeCatalog(), type => sys.write(type, typesFd));
sys.closeFile(typesFd);
}
}
let statistics: Statistic[];
if (canReportDiagnostics(sys, compilerOptions)) {
statistics = [];
const memoryUsed = sys.getMemoryUsage ? sys.getMemoryUsage() : -1;