/* * 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" #ifdef __cplusplus extern "C" { #endif #ifndef JNI_ENV_PTR #ifdef __cplusplus #define JNI_ENV_ARG_2(x, y) y #define JNI_ENV_ARG_3(x, y, z) y, z #define JNI_ENV_ARG_4(x, y, z, a) y, z, a #define JNI_ENV_PTR(x) x #else #define JNI_ENV_ARG_2(x,y) x, y #define JNI_ENV_ARG_3(x, y, z) x, y, z #define JNI_ENV_ARG_4(x, y, z, a) x, y, z, a #define JNI_ENV_PTR(x) (*x) #endif #endif 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 = JNI_ENV_PTR(env)->MonitorEnter(JNI_ENV_ARG_2(env, thisObject)); if(success != 0) { NSK_COMPLAIN1("MonitorEnter return non-zero: %d\n", success); 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")); } thisObjectClass = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG_2(env, thisObject)); // step1.unlockAll() field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "step1", "Lnsk/share/Wicket;")); wicketObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field)); wicketClass = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG_2(env, wicketObject)); JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, wicketObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, wicketClass, "unlockAll", "()V")))); // step2.waitFor() field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "step2", "Lnsk/share/Wicket;")); wicketObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field)); JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, wicketObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, wicketClass, "waitFor", "()V")))); // readyWicket.unlock() field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "readyWicket", "Lnsk/share/Wicket;")); wicketObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field)); JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, wicketObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, wicketClass, "unlock", "()V")))); // inner.lock() field = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG_4(env, thisObjectClass, "inner", "Lnsk/share/locks/DeadlockLocker;")); innerObject = JNI_ENV_PTR(env)->GetObjectField(JNI_ENV_ARG_3(env, thisObject, field)); deadlockLockerClass = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG_2(env, innerObject)); JNI_ENV_PTR(env)->CallVoidMethod(JNI_ENV_ARG_3(env, innerObject, JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG_4(env, deadlockLockerClass, "lock", "()V")))); success = JNI_ENV_PTR(env)->MonitorExit(JNI_ENV_ARG_2(env, thisObject)); if(success != 0) { NSK_COMPLAIN1("MonitorExit return non-zero: %d\n", success); 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")); } } #ifdef __cplusplus } #endif