Differential D5490 Diff 16964 src/secp256k1/src/java/org/bitcoin/Secp256k1Context.java

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	package org.bitcoin;			package org.bitcoin;

	/**			/**
	* This class holds the context reference used in native methods			* This class holds the context reference used in native methods
	* to handle ECDSA operations.			* to handle ECDSA operations.
	*/			*/
	public class Secp256k1Context {			public class Secp256k1Context {
	private static final boolean enabled; //true if the library is loaded			private static final boolean enabled; //true if the library is loaded
	private static final long context; //ref to pointer to context obj

	static { //static initializer			static { //static initializer
	boolean isEnabled = true;			boolean isEnabled = true;
	long contextRef = -1;
	try {			try {
	System.loadLibrary("secp256k1_jni");			System.loadLibrary("secp256k1_jni");
	contextRef = secp256k1_init_context();
	} catch (UnsatisfiedLinkError e) {			} catch (UnsatisfiedLinkError e) {
	System.out.println("UnsatisfiedLinkError: " + e.toString());			System.out.println("UnsatisfiedLinkError: " + e.toString());
	isEnabled = false;			isEnabled = false;
	}			}
	enabled = isEnabled;			enabled = isEnabled;
	context = contextRef;
	}			}

	public static boolean isEnabled() {			public static boolean isEnabled() {
	return enabled;			return enabled;
	}			}

	public static long getContext() {
	if(!enabled) return -1; //sanity check
	return context;
	}

	private static native long secp256k1_init_context();
	}			}