117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "jni.h"
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#include "nsk_tools.h"
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extern "C" {
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JNIEXPORT void JNICALL
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Java_nsk_share_locks_JNIMonitorLocker_doLock(JNIEnv *env, jobject thisObject)
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{
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/*
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This method executes JNI analog for following Java code:
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JNI_MonitorEnter(this);
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step1.unlockAll();
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step2.waitFor();
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readyWicket.unlock();
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inner.lock();
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JNI_MonitorExit(this);
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*/
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jint success;
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jfieldID field;
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jclass thisObjectClass;
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// fields 'step1' and 'step2'
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jobject wicketObject;
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// class for fields 'step1', 'step2', 'readyWicket'
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jclass wicketClass;
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// field 'inner'
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jobject innerObject;
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// class for field 'inner'
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jclass deadlockLockerClass;
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success = env->MonitorEnter(thisObject);
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if(success != 0)
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{
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NSK_COMPLAIN1("MonitorEnter return non-zero: %d\n", success);
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env->ThrowNew(
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env->FindClass("nsk/share/TestJNIError"),
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"MonitorEnter return non-zero");
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}
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thisObjectClass = env->GetObjectClass(thisObject);
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// step1.unlockAll()
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field = env->GetFieldID(thisObjectClass, "step1", "Lnsk/share/Wicket;");
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wicketObject = env->GetObjectField(thisObject, field);
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wicketClass = env->GetObjectClass(wicketObject);
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env->CallVoidMethod(wicketObject,
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env->GetMethodID(wicketClass, "unlockAll", "()V"));
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// step2.waitFor()
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field = env->GetFieldID(thisObjectClass, "step2", "Lnsk/share/Wicket;");
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wicketObject = env->GetObjectField(thisObject, field);
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env->CallVoidMethod(wicketObject,
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env->GetMethodID(wicketClass, "waitFor", "()V"));
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// readyWicket.unlock()
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field = env->GetFieldID(thisObjectClass, "readyWicket", "Lnsk/share/Wicket;");
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wicketObject = env->GetObjectField(thisObject, field);
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env->CallVoidMethod(wicketObject,
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env->GetMethodID(wicketClass, "unlock", "()V"));
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// inner.lock()
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field = env->GetFieldID(thisObjectClass, "inner", "Lnsk/share/locks/DeadlockLocker;");
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innerObject = env->GetObjectField(thisObject, field);
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deadlockLockerClass = env->GetObjectClass(innerObject);
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env->CallVoidMethod(innerObject,
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env->GetMethodID(deadlockLockerClass, "lock", "()V"));
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success = env->MonitorExit(thisObject);
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if(success != 0)
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{
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NSK_COMPLAIN1("MonitorExit return non-zero: %d\n", success);
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env->ThrowNew(
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env->FindClass("nsk/share/TestJNIError"),
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"MonitorExit return non-zero");
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}
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}
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}
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