return Enabled() && timer_.IsStarted();
}
+ // TODO(bmeurer): Remove this when HistogramTimerScope is fixed.
+#ifdef DEBUG
+ ElapsedTimer* timer() { return &timer_; }
+#endif
+
private:
ElapsedTimer timer_;
};
// Helper class for scoping a HistogramTimer.
+// TODO(bmeurer): The ifdeffery is an ugly hack around the fact that the
+// Parser is currently reentrant (when it throws an error, we call back
+// into JavaScript and all bets are off), but ElapsedTimer is not
+// reentry-safe. Fix this properly and remove |allow_nesting|.
class HistogramTimerScope BASE_EMBEDDED {
public:
- explicit HistogramTimerScope(HistogramTimer* timer) :
- timer_(timer) {
+ explicit HistogramTimerScope(HistogramTimer* timer,
+ bool allow_nesting = false)
+#ifdef DEBUG
+ : timer_(timer),
+ skipped_timer_start_(false) {
+ if (timer_->timer()->IsStarted() && allow_nesting) {
+ skipped_timer_start_ = true;
+ } else {
+ timer_->Start();
+ }
+#else
+ : timer_(timer) {
timer_->Start();
+#endif
}
~HistogramTimerScope() {
+#ifdef DEBUG
+ if (!skipped_timer_start_) {
+ timer_->Stop();
+ }
+#else
timer_->Stop();
+#endif
}
private:
HistogramTimer* timer_;
+#ifdef DEBUG
+ bool skipped_timer_start_;
+#endif
};
FunctionLiteral* Parser::ParseProgram() {
- HistogramTimerScope timer_scope(isolate()->counters()->parse());
+ // TODO(bmeurer): We temporarily need to pass allow_nesting = true here,
+ // see comment for HistogramTimerScope class.
+ HistogramTimerScope timer_scope(isolate()->counters()->parse(), true);
Handle<String> source(String::cast(script_->source()));
isolate()->counters()->total_parse_size()->Increment(source->length());
ElapsedTimer timer;