76f6a54327
Summary: Update yoga's copy of fbjni to include some missing java files. Reviewed By: IanChilds Differential Revision: D4953841 fbshipit-source-id: 74d5c617a6fcd11e82c86f03e61448b14a34b86b
50 lines
1.5 KiB
Java
50 lines
1.5 KiB
Java
// Copyright 2004-present Facebook. All Rights Reserved.
|
|
|
|
package com.facebook.jni;
|
|
|
|
import com.facebook.proguard.annotations.DoNotStrip;
|
|
import com.facebook.soloader.SoLoader;
|
|
|
|
/**
|
|
* This object holds a native C++ member for hybrid Java/C++ objects.
|
|
*
|
|
* NB: THREAD SAFETY
|
|
*
|
|
* {@link #dispose} deletes the corresponding native object on whatever thread
|
|
* the method is called on. In the common case when this is called by
|
|
* HybridData#finalize(), this will be called on the system finalizer
|
|
* thread. If you manually call resetNative() on the Java object, the C++
|
|
* object will be deleted synchronously on that thread.
|
|
*/
|
|
@DoNotStrip
|
|
public class HybridData {
|
|
|
|
static {
|
|
SoLoader.loadLibrary("fb");
|
|
}
|
|
|
|
// Private C++ instance
|
|
@DoNotStrip
|
|
private long mNativePointer = 0;
|
|
|
|
/**
|
|
* To explicitly delete the instance, call resetNative(). If the C++
|
|
* instance is referenced after this is called, a NullPointerException will
|
|
* be thrown. resetNative() may be called multiple times safely. Because
|
|
* {@link #finalize} calls resetNative, the instance will not leak if this is
|
|
* not called, but timing of deletion and the thread the C++ dtor is called
|
|
* on will be at the whim of the Java GC. If you want to control the thread
|
|
* and timing of the destructor, you should call resetNative() explicitly.
|
|
*/
|
|
public native void resetNative();
|
|
|
|
protected void finalize() throws Throwable {
|
|
resetNative();
|
|
super.finalize();
|
|
}
|
|
|
|
public boolean isValid() {
|
|
return mNativePointer != 0;
|
|
}
|
|
}
|