test/hotspot/jtreg/runtime/jni/FindClass/libbootLoaderTest.c

/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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#include <stdio.h>
#include <stdlib.h>

#include "jni.h"
#include "jni_util.h"

JNIEXPORT jclass JNICALL
Java_java_lang_BootNativeLibrary_findClass
(JNIEnv *env, jclass cls, jstring name) {
    jclass ncdfe;
    jthrowable t;

    const char* classname = (*env)->GetStringUTFChars(env, name, JNI_FALSE);
    jclass c = (*env)->FindClass(env, classname);
    (*env)->ReleaseStringUTFChars(env, name, classname);

    if (c == NULL) {
        // clear NCDFE
        t = (*env)->ExceptionOccurred(env);
        ncdfe = (*env)->FindClass(env, "java/lang/NoClassDefFoundError");
        if (t != NULL && (*env)->IsInstanceOf(env, t, ncdfe)) {
            (*env)->ExceptionClear(env);
        }
    }
    return c;
}