| /* |
| * 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 <stdio.h> |
| #include <time.h> |
| #include "jni_tools.h" |
| |
| static jfieldID objFieldId = NULL; |
| |
| /* |
| * Class: nsk_share_gc_lock_jniref_JNIRefLocker |
| * Method: criticalNative |
| * Signature: (JJ)V |
| */ |
| JNIEXPORT void JNICALL Java_nsk_share_gc_lock_jniref_JNIRefLocker_criticalNative |
| (JNIEnv *env, jobject this, jlong enterTime, jlong sleepTime) { |
| jobject obj; |
| jobject gref, lref, gwref; |
| time_t start_time, current_time; |
| |
| if (objFieldId == NULL) { |
| jclass class = (*env)->GetObjectClass(env, this); |
| if (class == NULL) { |
| printf("Error: GetObjectClass returned NULL\n"); |
| return; |
| } |
| objFieldId = (*env)->GetFieldID(env, class, "obj", "Ljava/lang/Object;"); |
| if (objFieldId == NULL) { |
| printf("Error: GetFieldID returned NULL\n"); |
| return; |
| } |
| } |
| obj = (*env)->GetObjectField(env, this, objFieldId); |
| if (obj == NULL) { |
| printf("Error: GetObjectField returned NULL\n"); |
| return; |
| } |
| (*env)->SetObjectField(env, this, objFieldId, NULL); |
| start_time = time(NULL); |
| enterTime /= 1000; |
| current_time = 0; |
| while (current_time - start_time < enterTime) { |
| gref = (*env)->NewGlobalRef(env, obj); |
| lref = (*env)->NewLocalRef(env, obj); |
| gwref = (*env)->NewWeakGlobalRef(env, obj); |
| mssleep((long) sleepTime); |
| (*env)->DeleteGlobalRef(env, gref); |
| (*env)->DeleteLocalRef(env, lref); |
| (*env)->DeleteWeakGlobalRef(env, gwref); |
| mssleep((long) sleepTime); |
| current_time = time(NULL); |
| } |
| (*env)->SetObjectField(env, this, objFieldId, obj); |
| } |