blob: ad0b47adc1b613533560e2d76d16eed563178209 [file] [log] [blame]
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
library tracer;
import '../compiler_new.dart' as api;
import 'compiler.dart' show Compiler;
import 'js_backend/namer.dart' show Namer;
import 'ssa/nodes.dart' as ssa show HGraph;
import 'ssa/ssa_tracer.dart' show HTracer;
import 'util/util.dart' show Indentation;
import 'world.dart' show ClosedWorld;
/**
* If non-null, we only trace methods whose name match the regexp defined by the
* given pattern.
*/
String get TRACE_FILTER_PATTERN =>
TRACE_FILTER_PATTERN_FROM_ENVIRONMENT ?? TRACE_FILTER_PATTERN_FOR_TEST;
const String TRACE_FILTER_PATTERN_FROM_ENVIRONMENT =
const String.fromEnvironment("DUMP_IR");
String TRACE_FILTER_PATTERN_FOR_TEST;
/**
* Dumps the intermediate representation after each phase in a format
* readable by IR Hydra.
*/
class Tracer extends TracerUtil {
final ClosedWorld closedWorld;
final Namer namer;
bool traceActive = false;
final api.OutputSink output;
final RegExp traceFilter;
Tracer(this.closedWorld, this.namer, Compiler compiler)
: traceFilter = TRACE_FILTER_PATTERN == null
? null
: new RegExp(TRACE_FILTER_PATTERN),
output = TRACE_FILTER_PATTERN != null
? compiler.outputProvider('dart', 'cfg', api.OutputType.debug)
: null;
bool get isEnabled => traceFilter != null;
void traceCompilation(String methodName) {
if (!isEnabled) return;
traceActive = traceFilter.hasMatch(methodName);
if (!traceActive) return;
tag("compilation", () {
printProperty("name", methodName);
printProperty("method", methodName);
printProperty("date", new DateTime.now().millisecondsSinceEpoch);
});
}
void traceGraph(String name, var irObject) {
if (!traceActive) return;
if (irObject is ssa.HGraph) {
new HTracer(output, closedWorld, namer).traceGraph(name, irObject);
}
}
void close() {
if (output != null) {
output.close();
}
}
}
abstract class TracerUtil {
api.OutputSink get output;
final Indentation _ind = new Indentation();
void tag(String tagName, Function f) {
println("begin_$tagName");
_ind.indentBlock(f);
println("end_$tagName");
}
void println(String string) {
addIndent();
add(string);
add("\n");
}
void printEmptyProperty(String propertyName) {
println(propertyName);
}
String formatPrty(x) {
if (x is num) {
return '${x}';
} else if (x is String) {
return '"${x}"';
} else if (x is Iterable) {
return x.map((s) => formatPrty(s)).join(' ');
} else {
throw "invalid property type: ${x}";
}
}
void printProperty(String propertyName, value) {
println("$propertyName ${formatPrty(value)}");
}
void add(String string) {
output.add(string);
}
void addIndent() {
add(_ind.indentation);
}
}