e7d878f9d0
Android runs a finalizer watchdog that tracks the running time of finalizers and throws an exception if any runs too long. Our finalizers do very little work and as such are not affected by the timeout. However, there has been reports, for example: https://stackoverflow.com/questions/24021609/how-to-handle-java-util-concurrent-timeoutexception-android-os-binderproxy-fin that the watchdog does not take into account periods where the device goes to sleep in the middle of a finalizer run. So if a given app runs in the background, the Java GC starts a finalizer and the device goes to sleep before it returns, an exception will crash the app if the sleep period extends the watchdog timeout. The problem might be fixed on some newer version of Android, but the problem is reported for as late as Android 6. The suggested workaround is to use PhantomReferences and run a background thread that take dead references off a ReferenceQueue and perform cleanup. This CL builds on the previous CL and splits up the Ref class so Refs only reference counts Java objects, while a new class GoRef tracks Go references. The Go references are wrapped in PhantomReferences that in turn appear on a GoRefQueue to be cleaned up by a background (daemon) Thread. Change-Id: I04e3296b851999c612d3baf6a593cc044c2c5bdd Reviewed-on: https://go-review.googlesource.com/106876 Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
// Java class issue12403.Parsable is a proxy for talking to a Go program.
|
|
// gobind -lang=java issue12403
|
|
//
|
|
// File is generated by gobind. Do not edit.
|
|
package issue12403;
|
|
|
|
import go.Seq;
|
|
|
|
public interface Parsable {
|
|
public String fromJSON(String jstr);
|
|
public String toJSON() throws Exception;
|
|
|
|
}
|
|
|
|
// Java class issue12403.Issue12403 is a proxy for talking to a Go program.
|
|
// gobind -lang=java issue12403
|
|
//
|
|
// File is generated by gobind. Do not edit.
|
|
package issue12403;
|
|
|
|
import go.Seq;
|
|
|
|
public abstract class Issue12403 {
|
|
static {
|
|
Seq.touch(); // for loading the native library
|
|
_init();
|
|
}
|
|
|
|
private Issue12403() {} // uninstantiable
|
|
|
|
// touch is called from other bound packages to initialize this package
|
|
public static void touch() {}
|
|
|
|
private static native void _init();
|
|
|
|
private static final class proxyParsable implements Seq.Proxy, Parsable {
|
|
private final int refnum;
|
|
|
|
@Override public final int incRefnum() {
|
|
Seq.incGoRef(refnum);
|
|
return refnum;
|
|
}
|
|
|
|
proxyParsable(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
|
|
|
|
public native String fromJSON(String jstr);
|
|
public native String toJSON() throws Exception;
|
|
}
|
|
|
|
|
|
}
|