1 /* 2 * Copyright (C) 2013 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.caliper.bridge; 18 19 import static java.util.concurrent.TimeUnit.SECONDS; 20 21 import com.google.caliper.util.Parser; 22 import com.google.caliper.util.ShortDuration; 23 24 import java.math.BigDecimal; 25 import java.util.regex.Matcher; 26 import java.util.regex.Pattern; 27 28 import javax.inject.Inject; 29 30 /** 31 * Parses {@link LogMessage} strings. 32 */ 33 final class LogMessageParser implements Parser<LogMessage> { 34 @Inject LogMessageParser() {} 35 36 private static final Pattern GC_PATTERN = 37 Pattern.compile(".*\\[(?:(Full) )?GC.*(\\d+\\.\\d+) secs\\]"); 38 private static final Pattern JIT_PATTERN = 39 Pattern.compile(".*::.*( \\(((\\d+ bytes)|(static))\\))?"); 40 private static final Pattern VM_OPTION_PATTERN = 41 Pattern.compile("\\s*(\\w+)\\s+(\\w+)\\s+:?=\\s+([^\\s]*)\\s+\\{([^}]*)\\}\\s*"); 42 43 @Override public LogMessage parse(CharSequence text) { 44 // TODO(gak): do this stuff in terms of CharSequence instead of String 45 String string = text.toString(); 46 Matcher gcMatcher = GC_PATTERN.matcher(string); 47 if (gcMatcher.matches()) { 48 return new GcLogMessage( 49 "Full".equals(gcMatcher.group(1)) 50 ? GcLogMessage.Type.FULL 51 : GcLogMessage.Type.INCREMENTAL, 52 ShortDuration.of(BigDecimal.valueOf(Double.parseDouble(gcMatcher.group(2))), SECONDS)); 53 } 54 Matcher jitMatcher = JIT_PATTERN.matcher(string); 55 if (jitMatcher.matches()) { 56 return new HotspotLogMessage(); 57 } 58 Matcher vmOptionMatcher = VM_OPTION_PATTERN.matcher(string); 59 if (vmOptionMatcher.matches()) { 60 return new VmOptionLogMessage(vmOptionMatcher.group(2), vmOptionMatcher.group(3)); 61 } 62 return null; 63 } 64 } 65
