jetbrains.exodus.gc.PeriodicGc.kt Maven / Gradle / Ivy
/**
* Copyright 2010 - 2022 JetBrains s.r.o.
*
* 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
*
* https://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 jetbrains.exodus.gc
import jetbrains.exodus.core.execution.SharedTimer
import java.lang.ref.WeakReference
class PeriodicGc(gc: GarbageCollector) : SharedTimer.ExpirablePeriodicTask {
private val gcRef = WeakReference(gc)
private val gc: GarbageCollector? get() = gcRef.get()
override val isExpired: Boolean get() = gc == null
override fun run() {
gc?.let { gc ->
val env = gc.environment
val period = env.environmentConfig.gcRunEvery
if (period > 0 && gc.lastInvocationTime + (period.toLong() * 1000L) < System.currentTimeMillis()) {
env.gc()
}
}
}
}