/*
* Copyright Terracotta, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ehcache.impl.internal.store.offheap;
import org.ehcache.impl.internal.store.offheap.MemorySizeParser;
import org.terracotta.offheapstore.buffersource.BufferSource;
import org.terracotta.offheapstore.buffersource.OffHeapBufferSource;
import org.terracotta.offheapstore.buffersource.TimingBufferSource;
import java.util.concurrent.TimeUnit;
/**
* OffHeapStoreUtils
*/
public class OffHeapStoreUtils {
/* threshold in ms for a chunk allocation over which a warning will be logged */
private static final long SLOW_DELAY = 3000L;
private static final String SLOW_DELAY_PROPERTY = "slowAllocationDelay";
/* threshold in ms for a chunk allocation over which an attempt may be made to abort the VM */
private static final long CRITICAL_DELAY = 30000L;
private static final String CRITICAL_DELAY_PROPERTY = "criticalAllocationDelay";
/* halt the VM when critical allocation delay is reached */
private static final boolean HALT_ON_CRITICAL_DELAY = true;
private static final String HALT_ON_CRITICAL_DELAY_PROPERTY = "haltOnCriticalAllocationDelay";
public static BufferSource getBufferSource() {
long slowDelay = getAdvancedLongConfigProperty(SLOW_DELAY_PROPERTY, SLOW_DELAY);
long critDelay = getAdvancedLongConfigProperty(CRITICAL_DELAY_PROPERTY, CRITICAL_DELAY);
boolean haltOnCrit = getAdvancedBooleanConfigProperty(HALT_ON_CRITICAL_DELAY_PROPERTY, HALT_ON_CRITICAL_DELAY);
return new TimingBufferSource(new OffHeapBufferSource(), slowDelay, TimeUnit.MILLISECONDS, critDelay, TimeUnit.MILLISECONDS, haltOnCrit);
}
public static long getAdvancedMemorySizeConfigProperty(String property, long defaultValue) {
String globalPropertyKey = "net.sf.ehcache.offheap.config." + property;
return MemorySizeParser.parse(System.getProperty(globalPropertyKey, Long.toString(defaultValue)));
}
public static long getAdvancedLongConfigProperty(String property, long defaultValue) {
String globalPropertyKey = "net.sf.ehcache.offheap.config." + property;
return Long.parseLong(System.getProperty(globalPropertyKey, Long.toString(defaultValue)));
}
public static boolean getAdvancedBooleanConfigProperty(String property, boolean defaultValue) {
String globalPropertyKey = "net.sf.ehcache.offheap.config." + property;
return Boolean.parseBoolean(System.getProperty(globalPropertyKey, Boolean.toString(defaultValue)));
}
}