128 lines
4.7 KiB
C
128 lines
4.7 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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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef JNI_ENV_PTR
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#ifdef __cplusplus
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#define JNI_ENV_ARG_2(x, y) y
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#define JNI_ENV_ARG_3(x, y, z) y, z
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#define JNI_ENV_ARG_4(x, y, z. a) y, z, a
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#define JNI_ENV_PTR(x) x
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#else
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#define JNI_ENV_ARG_2(x,y) x, y
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#define JNI_ENV_ARG_3(x, y, z) x, y, z
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#define JNI_ENV_ARG_4(x, y, z, a) x, y, z, a
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#define JNI_ENV_PTR(x) (*x)
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#endif
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#endif
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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 = JNI_ENV_PTR(env)->MonitorEnter(JNI_ENV_ARG_2(env, 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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JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG_3(env, JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG_2(env, "nsk/share/TestJNIError")), "MonitorEnter return non-zero"));
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}
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thisObjectClass = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG_2(env, thisObject));
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// step1.unlockAll()
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field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "step1", "Lnsk/share/Wicket;"));
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wicketObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field));
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wicketClass = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG_2(env, wicketObject));
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JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, wicketObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, wicketClass, "unlockAll", "()V"))));
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// step2.waitFor()
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field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "step2", "Lnsk/share/Wicket;"));
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wicketObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field));
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JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, wicketObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, wicketClass, "waitFor", "()V"))));
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// readyWicket.unlock()
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field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "readyWicket", "Lnsk/share/Wicket;"));
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wicketObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field));
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JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, wicketObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, wicketClass, "unlock", "()V"))));
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// inner.lock()
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field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "inner", "Lnsk/share/locks/DeadlockLocker;"));
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innerObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field));
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deadlockLockerClass = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG_2(env, innerObject));
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JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, innerObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, deadlockLockerClass, "lock", "()V"))));
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success = JNI_ENV_PTR(env)->MonitorExit(JNI_ENV_ARG_2(env, 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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JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG_3(env, JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG_2(env, "nsk/share/TestJNIError")), "MonitorExit return non-zero"));
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}
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}
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#ifdef __cplusplus
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}
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#endif
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