April 2015
Beginner to intermediate
494 pages
10h 26m
English
Let's define a background Watcher that will use an object shared between Java and C/C++ as a lock:
Store.java, add two new methods to start and stop a watcher thread. These methods respectively return and take a long as parameter. This value helps us hold a native pointer on the Java side:public class Store implements StoreListener {
...
public native long startWatcher();
public native void stopWatcher(long pPointer);
}StoreThreadSafe.java. The StoreThreadSafe class inherits from the Store class and aims at making the Store instances thread-safe using synchronized Java blocks. Declare a static member field LOCK of type Object and define a default constructor:package com.packtpub.store; ...