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// Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.benchmarks;
import static com.android.tools.r8.benchmarks.BenchmarkUtils.printRuntimeNanoseconds;
import com.android.tools.r8.ClassFileResourceProvider;
import com.android.tools.r8.CompilationException;
import com.android.tools.r8.CompilationMode;
import com.android.tools.r8.D8;
import com.android.tools.r8.D8Command;
import com.android.tools.r8.D8Output;
import com.android.tools.r8.Resource;
import com.android.tools.r8.Resource.Origin;
import com.android.tools.r8.Resource.PathOrigin;
import com.android.tools.r8.utils.DescriptorUtils;
import com.android.tools.r8.utils.FileUtils;
import com.android.tools.r8.utils.OutputMode;
import com.android.tools.r8.utils.ThreadUtils;
import com.android.tools.r8.utils.ZipUtils;
import com.google.common.collect.ImmutableMap;
import com.google.common.io.ByteStreams;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutorService;
public class FrameworkIncrementalDexingBenchmark {
private static final int ITERATIONS = 100;
private static final int API = 24;
private static final Path JAR_DESUGARED =
Paths.get("third_party", "framework", "framework_14082017_desugared.jar");
private static final Path JAR_NOT_DESUGARED =
Paths.get("third_party", "framework", "framework_14082017.jar");
private static final Path LIB =
Paths.get("third_party", "android_jar", "lib-v" + API, "android.jar");
static class InMemoryClassPathProvider implements ClassFileResourceProvider {
Origin origin;
Map<String, byte[]> resources;
InMemoryClassPathProvider(Path archive) throws IOException {
origin = new PathOrigin(archive, Origin.root());
ImmutableMap.Builder<String, byte[]> builder = ImmutableMap.builder();
ZipUtils.iter(
archive.toString(),
(entry, stream) -> {
String name = entry.getName();
if (FileUtils.isClassFile(Paths.get(name))) {
String descriptor = DescriptorUtils.guessTypeDescriptor(name);
builder.put(descriptor, ByteStreams.toByteArray(stream));
}
});
resources = builder.build();
}
@Override
public Set<String> getClassDescriptors() {
return resources.keySet();
}
@Override
public Resource getResource(String descriptor) {
byte[] bytes = resources.get(descriptor);
return bytes == null
? null
: Resource.fromBytes(
new EntryOrigin(descriptor, origin), bytes, Collections.singleton(descriptor));
}
}
static class EntryOrigin extends Origin {
final String descriptor;
public EntryOrigin(String descriptor, Origin parent) {
super(parent);
this.descriptor = descriptor;
}
@Override
public String part() {
return descriptor;
}
}
private static String title(String title, boolean desugar) {
return "FrameworkIncremental" + (desugar ? title : "NoDesugar" + title);
}
private static void compileAll(
Path input,
InMemoryClassPathProvider provider,
boolean desugar,
Map<String, Resource> outputs,
ExecutorService executor)
throws IOException, CompilationException {
long start = System.nanoTime();
D8Output out =
D8.run(
D8Command.builder()
.setMinApiLevel(API)
.setIntermediate(true)
.setMode(CompilationMode.DEBUG)
.addProgramFiles(input)
.addLibraryFiles(LIB)
.setOutputMode(OutputMode.FilePerInputClass)
.setEnableDesugaring(desugar)
.build(),
executor);
printRuntimeNanoseconds(title("DexAll", desugar), System.nanoTime() - start);
for (Resource resource : out.getDexResources()) {
for (String descriptor : resource.getClassDescriptors()) {
assert !outputs.containsKey(descriptor);
if (provider.resources.containsKey(descriptor)) {
outputs.put(descriptor, resource);
}
}
}
}
private static void compileGroupsOf(
int count,
List<String> descriptors,
InMemoryClassPathProvider provider,
boolean desugar,
Map<String, Resource> outputs,
ExecutorService executor)
throws IOException, CompilationException {
descriptors.sort(String::compareTo);
int increment = descriptors.size() / ITERATIONS;
long start = System.nanoTime();
for (int iteration = 0; iteration < ITERATIONS; iteration++) {
int index = iteration * increment;
List<byte[]> inputs = new ArrayList<>(count);
for (int j = 0; j < count; j++) {
provider.resources.get(descriptors.get(index + j));
}
D8Output out =
D8.run(
D8Command.builder()
.setMinApiLevel(API)
.setIntermediate(true)
.setMode(CompilationMode.DEBUG)
.addClassProgramData(inputs)
.addClasspathResourceProvider(provider)
.addLibraryFiles(LIB)
.setOutputMode(OutputMode.FilePerInputClass)
.setEnableDesugaring(desugar)
.build(),
executor);
for (Resource resource : out.getDexResources()) {
for (String descriptor : resource.getClassDescriptors()) {
if (provider.resources.containsKey(descriptor)) {
outputs.put(descriptor, resource);
}
}
}
}
printRuntimeNanoseconds(title("DexGroupsOf" + count, desugar), System.nanoTime() - start);
}
private static D8Output merge(
boolean desugar,
Map<String, Resource> outputs,
ExecutorService executor)
throws IOException, CompilationException {
List<byte[]> bytes = new ArrayList<>(outputs.size());
for (Resource input : outputs.values()) {
bytes.add(ByteStreams.toByteArray(input.getStream()));
}
long start = System.nanoTime();
D8Output out =
D8.run(
D8Command.builder()
.setMinApiLevel(API)
.setIntermediate(false)
.setMode(CompilationMode.DEBUG)
.addDexProgramData(bytes)
.setOutputMode(OutputMode.Indexed)
.setEnableDesugaring(false) // never need to desugar when merging dex.
.build(),
executor);
printRuntimeNanoseconds(title("DexMerge", desugar), System.nanoTime() - start);
return out;
}
public static void main(String[] args) throws IOException, CompilationException {
boolean desugar = Arrays.asList(args).contains("--desugar");
Path input = desugar ? JAR_NOT_DESUGARED : JAR_DESUGARED;
InMemoryClassPathProvider provider = new InMemoryClassPathProvider(input);
List<String> descriptors = new ArrayList<>(provider.getClassDescriptors());
Map<String, Resource> outputs = new HashMap<>(provider.getClassDescriptors().size());
int threads = Integer.min(Runtime.getRuntime().availableProcessors(), 16) / 2;
ExecutorService executor = ThreadUtils.getExecutorService(threads);
try {
compileAll(input, provider, desugar, outputs, executor);
compileGroupsOf(1, descriptors, provider, desugar, outputs, executor);
compileGroupsOf(10, descriptors, provider, desugar, outputs, executor);
compileGroupsOf(100, descriptors, provider, desugar, outputs, executor);
merge(desugar, outputs, executor);
// TODO: We should run dex2oat to verify the compilation.
} finally {
executor.shutdown();
}
}
}
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