test/jdk/java/lang/Thread/virtual/libSynchronizedNative.c

/*
 * Copyright (c) 2023, 2024, 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 "jni.h"

JNIEXPORT void JNICALL
Java_SynchronizedNative_runWithSynchronizedNative(JNIEnv *env, jobject obj, jobject task) {
    jclass clazz = (*env)->GetObjectClass(env, obj);
    jmethodID mid = (*env)->GetMethodID(env, clazz, "run", "(Ljava/lang/Runnable;)V");
    if (mid != NULL) {
        (*env)->CallVoidMethod(env, obj, mid, task);
    }
}

JNIEXPORT void JNICALL
Java_SynchronizedNative_runWithMonitorEnteredInNative(JNIEnv *env, jobject obj, jobject lock, jobject task) {
    jclass clazz = (*env)->GetObjectClass(env, obj);
    jmethodID mid = (*env)->GetMethodID(env, clazz, "run", "(Ljava/lang/Runnable;)V");
    if (mid != NULL && (*env)->MonitorEnter(env, lock) == 0) {
        (*env)->CallVoidMethod(env, obj, mid, task);
        (*env)->MonitorExit(env, lock);  // can be called with pending exception
    }
}