| /* |
| * 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.cassandra.simulator.asm; |
| |
| import java.util.EnumSet; |
| |
| import org.objectweb.asm.AnnotationVisitor; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| import static org.apache.cassandra.simulator.asm.Flag.GLOBAL_METHODS; |
| import static org.apache.cassandra.simulator.asm.TransformationKind.CONCURRENT_HASH_MAP; |
| import static org.apache.cassandra.simulator.asm.TransformationKind.GLOBAL_METHOD; |
| import static org.apache.cassandra.simulator.asm.TransformationKind.IDENTITY_HASH_MAP; |
| |
| /** |
| * Intercept factory methods in org.apache.concurrent.utils.concurrent, and redirect them to |
| * {@link org.apache.cassandra.simulator.systems.InterceptorOfGlobalMethods} |
| */ |
| class GlobalMethodTransformer extends MethodVisitor |
| { |
| private final ClassTransformer transformer; |
| private final String methodName; |
| private boolean globalMethods; |
| private boolean globalClock; |
| private boolean systemClock; |
| private boolean lockSupport; |
| private boolean deterministic; |
| boolean hasSeenAnyMethodInsn; |
| |
| public GlobalMethodTransformer(EnumSet<Flag> flags, ClassTransformer transformer, int api, String methodName, MethodVisitor parent) |
| { |
| super(api, parent); |
| this.globalMethods = flags.contains(GLOBAL_METHODS); |
| this.globalClock = flags.contains(Flag.GLOBAL_CLOCK); |
| this.systemClock = flags.contains(Flag.SYSTEM_CLOCK); |
| this.lockSupport = flags.contains(Flag.LOCK_SUPPORT); |
| this.deterministic = flags.contains(Flag.DETERMINISTIC); |
| this.transformer = transformer; |
| this.methodName = methodName; |
| } |
| |
| @Override |
| public void visitMethodInsn(int opcode, String owner, String name, String descriptor, boolean isInterface) |
| { |
| boolean isFirstMethodInsn = !hasSeenAnyMethodInsn; |
| hasSeenAnyMethodInsn = true; |
| |
| if (globalMethods && opcode == Opcodes.INVOKESTATIC && owner.startsWith("org/apache/cassandra/utils/") && ( |
| (owner.equals("org/apache/cassandra/utils/concurrent/WaitQueue") && name.equals("newWaitQueue")) |
| || (owner.equals("org/apache/cassandra/utils/concurrent/CountDownLatch") && name.equals("newCountDownLatch")) |
| || (owner.equals("org/apache/cassandra/utils/concurrent/Condition") && name.equals("newOneTimeCondition")) |
| || (owner.equals("org/apache/cassandra/utils/concurrent/BlockingQueues") && name.equals("newBlockingQueue")) |
| || (owner.equals("org/apache/cassandra/utils/concurrent/Semaphore") && (name.equals("newSemaphore") || name.equals("newFairSemaphore"))) |
| )) |
| { |
| transformer.witness(GLOBAL_METHOD); |
| super.visitMethodInsn(Opcodes.INVOKESTATIC, "org/apache/cassandra/simulator/systems/InterceptorOfGlobalMethods$Global", name, descriptor, false); |
| } |
| else if (globalMethods && ((opcode == Opcodes.INVOKESTATIC && ( |
| owner.startsWith("org/apache/cassandra/utils/") && ( |
| (owner.equals("org/apache/cassandra/utils/Clock") && name.equals("waitUntil")) |
| || (owner.equals("org/apache/cassandra/utils/concurrent/Awaitable$SyncAwaitable") && name.equals("waitUntil"))) |
| || !deterministic && owner.equals("java/lang/System") && name.equals("identityHashCode") |
| || owner.equals("java/util/UUID") && name.equals("randomUUID") |
| || owner.equals("com/google/common/util/concurrent/Uninterruptibles") && name.equals("sleepUninterruptibly") |
| || owner.equals("sun/misc/Unsafe") && name.equals("getUnsafe"))) |
| || (owner.equals("java/util/concurrent/TimeUnit") && name.equals("sleep"))) |
| ) |
| { |
| transformer.witness(GLOBAL_METHOD); |
| super.visitMethodInsn(Opcodes.INVOKESTATIC, "org/apache/cassandra/simulator/systems/InterceptorOfSystemMethods$Global", name, descriptor, false); |
| } |
| else if ((globalMethods || deterministic) && opcode == Opcodes.INVOKESTATIC && |
| owner.equals("java/util/concurrent/ThreadLocalRandom") && (name.equals("getProbe") || name.equals("advanceProbe") || name.equals("localInit")) |
| ) |
| { |
| transformer.witness(GLOBAL_METHOD); |
| // if we're in deterministic mode (i.e. for base ConcurrentHashMap) don't initialise ThreadLocalRandom |
| if (name.equals("getProbe")) super.visitLdcInsn(0); |
| else if (name.equals("advanceProbe")) super.visitMethodInsn(Opcodes.INVOKESTATIC, "org/apache/cassandra/simulator/systems/InterceptorOfSystemMethods$Global", name, descriptor, false); |
| } |
| else if (globalMethods && opcode == Opcodes.INVOKESPECIAL && owner.equals("java/util/IdentityHashMap") && name.equals("<init>")) |
| { |
| transformer.witness(IDENTITY_HASH_MAP); |
| super.visitMethodInsn(opcode, "org/apache/cassandra/simulator/systems/InterceptedIdentityHashMap", name, descriptor, false); |
| } |
| else if (globalMethods && opcode == Opcodes.INVOKESPECIAL && owner.equals("java/util/concurrent/ConcurrentHashMap") && name.equals("<init>") |
| && !(transformer.className().equals("org/apache/cassandra/simulator/systems/InterceptibleConcurrentHashMap") && methodName.equals("<init>") && isFirstMethodInsn)) |
| { |
| transformer.witness(CONCURRENT_HASH_MAP); |
| super.visitMethodInsn(opcode, "org/apache/cassandra/simulator/systems/InterceptibleConcurrentHashMap", name, descriptor, false); |
| } |
| else if (lockSupport && opcode == Opcodes.INVOKESTATIC && owner.equals("java/util/concurrent/locks/LockSupport") && (name.startsWith("park") || name.equals("unpark"))) |
| { |
| transformer.witness(TransformationKind.LOCK_SUPPORT); |
| super.visitMethodInsn(Opcodes.INVOKESTATIC, "org/apache/cassandra/simulator/systems/InterceptorOfSystemMethods$Global", name, descriptor, false); |
| } |
| else if (globalClock && opcode == Opcodes.INVOKESTATIC && name.equals("timestampMicros") && owner.equals("org/apache/cassandra/utils/FBUtilities")) |
| { |
| transformer.witness(GLOBAL_METHOD); |
| super.visitMethodInsn(Opcodes.INVOKESTATIC, "org/apache/cassandra/simulator/systems/SimulatedTime$Global", "nextGlobalMonotonicMicros", descriptor, false); |
| } |
| else if (systemClock && opcode == Opcodes.INVOKESTATIC && owner.equals("java/lang/System") && (name.equals("nanoTime") || name.equals("currentTimeMillis"))) |
| { |
| transformer.witness(GLOBAL_METHOD); |
| super.visitMethodInsn(Opcodes.INVOKESTATIC, "org/apache/cassandra/simulator/systems/InterceptorOfSystemMethods$Global", name, descriptor, false); |
| } |
| else |
| { |
| super.visitMethodInsn(opcode, owner, name, descriptor, isInterface); |
| } |
| } |
| |
| @Override |
| public void visitTypeInsn(int opcode, String type) |
| { |
| if (globalMethods && opcode == Opcodes.NEW && type.equals("java/util/IdentityHashMap")) |
| { |
| super.visitTypeInsn(opcode, "org/apache/cassandra/simulator/systems/InterceptedIdentityHashMap"); |
| } |
| else if (globalMethods && opcode == Opcodes.NEW && type.equals("java/util/concurrent/ConcurrentHashMap")) |
| { |
| super.visitTypeInsn(opcode, "org/apache/cassandra/simulator/systems/InterceptibleConcurrentHashMap"); |
| } |
| else |
| { |
| super.visitTypeInsn(opcode, type); |
| } |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(String descriptor, boolean visible) |
| { |
| return Utils.checkForSimulationAnnotations(api, descriptor, super.visitAnnotation(descriptor, visible), (flag, add) -> { |
| switch (flag) |
| { |
| default: throw new AssertionError(); |
| case GLOBAL_METHODS: globalMethods = add; break; |
| case GLOBAL_CLOCK: globalClock = add; break; |
| case SYSTEM_CLOCK: systemClock = add; break; |
| case LOCK_SUPPORT: lockSupport = add; break; |
| case DETERMINISTIC: deterministic = add; break; |
| case MONITORS: throw new UnsupportedOperationException("Cannot currently toggle MONITORS at the method level"); |
| } |
| }); |
| } |
| } |