监控 GC
参考：com.android.internal.os.BinderInternal 里的监控 GC 操作
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
| public class GcWatcherInternal {
private static WeakReference<GcWatcher> sGcWatcher;
private static ArrayList<Runnable> sGcWatchers = new ArrayList<>();
static Runnable[] sTmpWatchers = new Runnable[1];
private static long sLastGcTime;
private static final class GcWatcher {
@Override
protected void finalize() throws Throwable {
sLastGcTime = SystemClock.uptimeMillis();
synchronized (sGcWatchers) {
sTmpWatchers = sGcWatchers.toArray(sTmpWatchers);
}
for (int i=0; i<sTmpWatchers.length; i++) {
if (sTmpWatchers[i] != null) {
sTmpWatchers[i].run();
}
}
sGcWatcher = new WeakReference<GcWatcher>(new GcWatcher());
}
}
public static void addGcWatcher(Runnable watcher) {
synchronized (sGcWatchers) {
sGcWatchers.add(watcher);
}
}
public static void removeGcWatcher(Runnable watcher) {
synchronized (sGcWatchers) {
sGcWatchers.remove(watcher);
}
}
}
|