mirror of
https://github.com/dart-lang/sdk
synced 2024-09-19 14:51:30 +00:00
1a6d1eca32
Allow members of patch classes to be annotated with @patch. The VM ignores the annotation. I simply replaces the original method if the name matches, or reports an error if field names match. Adding a bit is_patched to members to do more checking remains a TODO. There are currently no unused bits available, and I don’t want to increase the size of Function objects for this. BUG= R=asiva@google.com Review URL: https://codereview.chromium.org/2230383003 .
20 lines
614 B
Dart
20 lines
614 B
Dart
// Copyright (c) 2012, 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.
|
|
|
|
// A VM patch of the stopwatch part of dart:core.
|
|
|
|
@patch class Stopwatch {
|
|
@patch static void _initTicker() {
|
|
if (_frequency == null) {
|
|
_frequency = _computeFrequency();
|
|
}
|
|
}
|
|
|
|
// Returns the current clock tick.
|
|
@patch static int _now() native "Stopwatch_now";
|
|
|
|
// Returns the frequency of clock ticks in Hz.
|
|
static int _computeFrequency() native "Stopwatch_frequency";
|
|
}
|