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Added Timer.scheduleTaskAtFixedRate() method #186

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Added Timer.scheduleTaskAtFixedRate() method #186

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29 changes: 29 additions & 0 deletions classlib/src/main/java/org/teavm/classlib/java/util/TTimer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -81,4 +81,33 @@ public void schedule(final TTimerTask task, long delay, final long period) {
};
task.nativeTimerId = Window.setTimeout(handler, (int) delay);
}

public void scheduleAtFixedRate(final TTimerTask task, long delay, long period) {
if (cancelled || task.timer != null || task.nativeTimerId >= 0) {
throw new TIllegalStateException();
}
final long[] nextStartTime = new long[]{System.currentTimeMillis() + delay};
task.timer = this;
TimerHandler handler = new TimerHandler() {
@Override public void onTimer() {
new Thread(() -> {
if (cancelled || task.timer == null) {
return;
}
long nextDelay = nextStartTime[0] - System.currentTimeMillis();
if (nextDelay < 0 ) {
nextDelay = 0;
}
task.nativeTimerId = Window.setTimeout(this, (int) nextDelay);
nextStartTime[0] += period;
TTimerTask.performOnce(task);
if (!cancelled) {
task.timer = TTimer.this;
}
}).start();
}
};
task.nativeTimerId = Window.setTimeout(handler, (int) delay);
nextStartTime[0] += period;
}
}