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mobile/bind/testdata/interfaces.java.golden
Elias Naur e7d878f9d0 bind: replace Java finalizers with PhantomReferences
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>
2018-04-17 15:00:01 +00:00

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// Java class interfaces.Error is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
public interface Error {
public void err() throws Exception;
}
// Java class interfaces.I is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
public interface I {
public int rand();
}
// Java class interfaces.I1 is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
/**
* not implementable
*/
public interface I1 {
public void j();
}
// Java class interfaces.I2 is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
/**
* not implementable
*/
public interface I2 {
public void g();
}
// Java class interfaces.I3 is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
/**
* implementable
(the implementor has to find a source of I1s)
*/
public interface I3 {
public I1 f();
}
// Java class interfaces.Interfaces_ is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
/**
* Interfaces is an interface with the same name as its package.
*/
public interface Interfaces_ {
public void someMethod();
}
// Java class interfaces.LargerI is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
public interface LargerI extends I, SameI {
public void anotherFunc();
public int rand();
}
// Java class interfaces.SameI is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
public interface SameI {
public int rand();
}
// Java class interfaces.WithParam is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
public interface WithParam {
public void hasParam(boolean p0);
}
// Java class interfaces.Interfaces is a proxy for talking to a Go program.
// gobind -lang=java interfaces
//
// File is generated by gobind. Do not edit.
package interfaces;
import go.Seq;
public abstract class Interfaces {
static {
Seq.touch(); // for loading the native library
_init();
}
private Interfaces() {} // 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 proxyError implements Seq.Proxy, Error {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyError(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native void err() throws Exception;
}
private static final class proxyI implements Seq.Proxy, I {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyI(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native int rand();
}
private static final class proxyI1 implements Seq.Proxy, I1 {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyI1(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native void j();
}
private static final class proxyI2 implements Seq.Proxy, I2 {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyI2(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native void g();
}
private static final class proxyI3 implements Seq.Proxy, I3 {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyI3(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native I1 f();
}
private static final class proxyInterfaces implements Seq.Proxy, Interfaces_ {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyInterfaces(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native void someMethod();
}
private static final class proxyLargerI implements Seq.Proxy, LargerI {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyLargerI(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native void anotherFunc();
public native int rand();
}
private static final class proxySameI implements Seq.Proxy, SameI {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxySameI(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native int rand();
}
private static final class proxyWithParam implements Seq.Proxy, WithParam {
private final int refnum;
@Override public final int incRefnum() {
Seq.incGoRef(refnum);
return refnum;
}
proxyWithParam(int refnum) { this.refnum = refnum; Seq.trackGoRef(refnum, this); }
public native void hasParam(boolean p0);
}
public static native int add3(I r);
public static native void callErr(Error e) throws Exception;
public static native I seven();
}