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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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
*
* 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 com.android.loganalysis.parser;
import com.android.loganalysis.item.GfxInfoItem;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* An {@link IParser} to handle the output of {@code gfxinfo}.
*/
public class GfxInfoParser implements IParser {
// Example: "** Graphics info for pid 853 [com.google.android.leanbacklauncher] **"
private static final Pattern PID_PREFIX = Pattern.compile(
"\\*\\* Graphics info for pid (\\d+) \\[(.+)\\] \\*\\*");
// Example: "Total frames rendered: 20391"
private static final Pattern TOTAL_FRAMES_PREFIX = Pattern.compile(
"Total frames rendered: (\\d+)");
// Example: "Janky frames: 785 (3.85%)"
private static final Pattern JANKY_FRAMES_PREFIX = Pattern.compile(
"Janky frames: (\\d+) \\(.+\\%\\)");
/**
* Parses the log of "dumpsys gfxinfo".
* Currently it only parses total frame number and total jank number per process.
* This method only works for M and later.
*/
@Override
public GfxInfoItem parse(List<String> lines) {
GfxInfoItem item = new GfxInfoItem();
String name = null;
Integer pid = null;
Long totalFrames = null;
Long jankyFrames = null;
// gfxinfo also offers stats for specific views, but this parser
// only records per process data. See example in GfxInfoParserTest.java.
for (String line : lines) {
Matcher m = PID_PREFIX.matcher(line);
if (m.matches() && m.groupCount() == 2) {
// New process line, clear data.
pid = Integer.parseInt(m.group(1));
name = m.group(2);
totalFrames = null;
jankyFrames = null;
}
m = TOTAL_FRAMES_PREFIX.matcher(line);
if (totalFrames == null && m.matches()) {
totalFrames = Long.parseLong(m.group(1));
}
m = JANKY_FRAMES_PREFIX.matcher(line);
if (jankyFrames == null && m.matches()) {
jankyFrames = Long.parseLong(m.group(1));
}
if (name != null && pid != null && totalFrames != null && jankyFrames != null) {
// All the data for the process is recorded, add as a row.
item.addRow(pid, name, totalFrames, jankyFrames);
name = null;
pid = null;
totalFrames = null;
jankyFrames = null;
}
}
return item;
}
}
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