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/*
* Copyright (c) 2007, 2018, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "jni.h"
#include "nsk_tools.h"
extern "C" {
JNIEXPORT void JNICALL
Java_nsk_share_locks_JNIMonitorLocker_doLock(JNIEnv *env, jobject thisObject)
{
/*
This method executes JNI analog for following Java code:
JNI_MonitorEnter(this);
step1.unlockAll();
step2.waitFor();
readyWicket.unlock();
inner.lock();
JNI_MonitorExit(this);
*/
jint success;
jfieldID field;
jclass thisObjectClass;
// fields 'step1' and 'step2'
jobject wicketObject;
// class for fields 'step1', 'step2', 'readyWicket'
jclass wicketClass;
// field 'inner'
jobject innerObject;
// class for field 'inner'
jclass deadlockLockerClass;
success = env->MonitorEnter(thisObject);
if(success != 0)
{
NSK_COMPLAIN1("MonitorEnter return non-zero: %d\n", success);
env->ThrowNew(
env->FindClass("nsk/share/TestJNIError"),
"MonitorEnter return non-zero");
}
thisObjectClass = env->GetObjectClass(thisObject);
// step1.unlockAll()
field = env->GetFieldID(thisObjectClass, "step1", "Lnsk/share/Wicket;");
wicketObject = env->GetObjectField(thisObject, field);
wicketClass = env->GetObjectClass(wicketObject);
env->CallVoidMethod(wicketObject,
env->GetMethodID(wicketClass, "unlockAll", "()V"));
// step2.waitFor()
field = env->GetFieldID(thisObjectClass, "step2", "Lnsk/share/Wicket;");
wicketObject = env->GetObjectField(thisObject, field);
env->CallVoidMethod(wicketObject,
env->GetMethodID(wicketClass, "waitFor", "()V"));
// readyWicket.unlock()
field = env->GetFieldID(thisObjectClass, "readyWicket", "Lnsk/share/Wicket;");
wicketObject = env->GetObjectField(thisObject, field);
env->CallVoidMethod(wicketObject,
env->GetMethodID(wicketClass, "unlock", "()V"));
// inner.lock()
field = env->GetFieldID(thisObjectClass, "inner", "Lnsk/share/locks/DeadlockLocker;");
innerObject = env->GetObjectField(thisObject, field);
deadlockLockerClass = env->GetObjectClass(innerObject);
env->CallVoidMethod(innerObject,
env->GetMethodID(deadlockLockerClass, "lock", "()V"));
success = env->MonitorExit(thisObject);
if(success != 0)
{
NSK_COMPLAIN1("MonitorExit return non-zero: %d\n", success);
env->ThrowNew(
env->FindClass("nsk/share/TestJNIError"),
"MonitorExit return non-zero");
}
}
}
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