jdk/src/share/native/sun/management/GarbageCollectorImpl.c

/*
 * Copyright (c) 2003, 2011, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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#include <jni.h>
#include "management.h"
#include "sun_management_GarbageCollectorImpl.h"

JNIEXPORT jlong JNICALL Java_sun_management_GarbageCollectorImpl_getCollectionCount
  (JNIEnv *env, jobject mgr) {
    return jmm_interface->GetLongAttribute(env, mgr, JMM_GC_COUNT);
}

JNIEXPORT jlong JNICALL Java_sun_management_GarbageCollectorImpl_getCollectionTime
  (JNIEnv *env, jobject mgr) {
    return jmm_interface->GetLongAttribute(env, mgr, JMM_GC_TIME_MS);
}


JNIEXPORT void JNICALL Java_sun_management_GarbageCollectorImpl_setNotificationEnabled
(JNIEnv *env, jobject dummy, jobject gc,jboolean enabled) {

    if (gc == NULL) {
        JNU_ThrowNullPointerException(env, "Invalid GarbageCollectorMBean");
        return;
    }
    if((jmm_version > JMM_VERSION_1_2)
       || (jmm_version == JMM_VERSION_1_2 && ((jmm_version&0xFF)>=1))) {
      jmm_interface->SetGCNotificationEnabled(env, gc, enabled);
    }
}