| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.drill.exec.memory; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import org.apache.drill.categories.MemoryTest; |
| import org.apache.drill.exec.memory.Accountant.AllocationOutcome; |
| import org.apache.drill.test.BaseTest; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category(MemoryTest.class) |
| public class TestAccountant extends BaseTest { |
| |
| @Test |
| public void basic() { |
| ensureAccurateReservations(null); |
| } |
| |
| @Test |
| public void nested() { |
| final Accountant parent = new Accountant(null, 0, Long.MAX_VALUE); |
| ensureAccurateReservations(parent); |
| assertEquals(0, parent.getAllocatedMemory()); |
| } |
| |
| @Test |
| public void multiThread() throws InterruptedException { |
| final Accountant parent = new Accountant(null, 0, Long.MAX_VALUE); |
| |
| final int numberOfThreads = 32; |
| final int loops = 100; |
| Thread[] threads = new Thread[numberOfThreads]; |
| |
| for (int i = 0; i < numberOfThreads; i++) { |
| Thread t = new Thread() { |
| |
| @Override |
| public void run() { |
| try { |
| for (int i = 0; i < loops; i++) { |
| ensureAccurateReservations(parent); |
| } |
| } catch (Exception ex) { |
| ex.printStackTrace(); |
| Assert.fail(ex.getMessage()); |
| } |
| } |
| |
| }; |
| threads[i] = t; |
| t.start(); |
| } |
| |
| for (Thread thread : threads) { |
| thread.join(); |
| } |
| |
| assertEquals(0, parent.getAllocatedMemory()); |
| } |
| |
| private void ensureAccurateReservations(Accountant outsideParent) { |
| final Accountant parent = new Accountant(outsideParent, 0, 10); |
| assertEquals(0, parent.getAllocatedMemory()); |
| |
| final Accountant child = new Accountant(parent, 2, Long.MAX_VALUE); |
| assertEquals(2, parent.getAllocatedMemory()); |
| |
| { |
| AllocationOutcome first = child.allocateBytes(1); |
| assertEquals(AllocationOutcome.SUCCESS, first); |
| } |
| |
| // child will have new allocation |
| assertEquals(1, child.getAllocatedMemory()); |
| |
| // root has no change since within reservation |
| assertEquals(2, parent.getAllocatedMemory()); |
| |
| { |
| AllocationOutcome first = child.allocateBytes(1); |
| assertEquals(AllocationOutcome.SUCCESS, first); |
| } |
| |
| // child will have new allocation |
| assertEquals(2, child.getAllocatedMemory()); |
| |
| // root has no change since within reservation |
| assertEquals(2, parent.getAllocatedMemory()); |
| |
| child.releaseBytes(1); |
| |
| // child will have new allocation |
| assertEquals(1, child.getAllocatedMemory()); |
| |
| // root has no change since within reservation |
| assertEquals(2, parent.getAllocatedMemory()); |
| |
| { |
| AllocationOutcome first = child.allocateBytes(2); |
| assertEquals(AllocationOutcome.SUCCESS, first); |
| } |
| |
| // child will have new allocation |
| assertEquals(3, child.getAllocatedMemory()); |
| |
| // went beyond reservation, now in parent accountant |
| assertEquals(3, parent.getAllocatedMemory()); |
| |
| { |
| AllocationOutcome first = child.allocateBytes(7); |
| assertEquals(AllocationOutcome.SUCCESS, first); |
| } |
| |
| // child will have new allocation |
| assertEquals(10, child.getAllocatedMemory()); |
| |
| // went beyond reservation, now in parent accountant |
| assertEquals(10, parent.getAllocatedMemory()); |
| |
| child.releaseBytes(9); |
| |
| assertEquals(1, child.getAllocatedMemory()); |
| |
| // back to reservation size |
| assertEquals(2, parent.getAllocatedMemory()); |
| |
| AllocationOutcome first = child.allocateBytes(10); |
| assertEquals(AllocationOutcome.FAILED_PARENT, first); |
| |
| // unchanged |
| assertEquals(1, child.getAllocatedMemory()); |
| assertEquals(2, parent.getAllocatedMemory()); |
| |
| boolean withinLimit = child.forceAllocate(10); |
| assertEquals(false, withinLimit); |
| |
| // at new limit |
| assertEquals(child.getAllocatedMemory(), 11); |
| assertEquals(parent.getAllocatedMemory(), 11); |
| |
| |
| child.releaseBytes(11); |
| assertEquals(child.getAllocatedMemory(), 0); |
| assertEquals(parent.getAllocatedMemory(), 2); |
| |
| child.close(); |
| parent.close(); |
| } |
| } |