1 // Copyright 2022 Code Intelligence GmbH 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package com.code_intelligence.jazzer.instrumentor; 16 17 import java.nio.ByteBuffer; 18 19 public final class DirectByteBuffer2CoverageMap { 20 // The current target, JsonSanitizer, uses less than 2048 coverage counters. 21 private static final int NUM_COUNTERS = 4096; 22 public static final ByteBuffer counters = ByteBuffer.allocateDirect(NUM_COUNTERS); 23 enlargeIfNeeded(int nextId)24 public static void enlargeIfNeeded(int nextId) { 25 // Statically sized counters buffer. 26 } 27 recordCoverage(final int id)28 public static void recordCoverage(final int id) { 29 final byte counter = counters.get(id); 30 counters.put(id, (byte) (counter == -1 ? 1 : counter + 1)); 31 } 32 } 33