net.openhft.chronicle.core.ClassLoading Maven / Gradle / Ivy

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/*
 *     Copyright (C) 2015  higherfrequencytrading.com
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with this program.  If not, see .
 */

package net.openhft.chronicle.core;

/**
 * Utility class to create classes from a byte[]
 */
public enum ClassLoading {
    ;

    /**
     * Define a class into the current class loader
     *
     * @param className of the class to define.
     * @param bytes     byte code for the class
     * @return the class loaded.
     */
    public static Class defineClass(String className, byte[] bytes) {
        return defineClass(Thread.currentThread().getContextClassLoader(), className, bytes);
    }

    /**
     * Define a class into the current class loader
     * @param classLoader to load the class.
     * @param className of the class to define.
     * @param bytes byte code for the class
     * @return the class loaded.
     */
    private static Class defineClass(ClassLoader classLoader, String className, byte[] bytes) {
        return UnsafeMemory.UNSAFE.defineClass(className, bytes, 0, bytes.length, classLoader, null);
    }
}