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8259947: (fs) Optimize UnixPath.encode implementation

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Reviewed-by: chegar, shade, alanb
This commit is contained in:
Claes Redestad 2021-01-20 15:14:48 +00:00
parent 69f90b5fd4
commit 5891509d13
6 changed files with 64 additions and 67 deletions
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49
test/micro/org/openjdk/bench/java/io/FileOpen.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -27,24 +27,24 @@ import org.openjdk.jmh.infra.Blackhole;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.concurrent.TimeUnit;
/**
* Tests the overheads of I/O API.
* Tests the overheads of creating File objects, and converting such objects to Paths.
*/
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
@Warmup(time=2, iterations=5)
@Measurement(time=3, iterations=5)
@Fork(value=2, jvmArgs="-Xmx1g")
public class FileOpen {
public String normalFile = "/test/dir/file/name.txt";
public String root = "/";
public String trailingSlash = "/test/dir/file/name.txt/";
public String notNormalizedFile = "/test/dir/file//name.txt";
private String normalFile = "/test/dir/file/name.txt";
private String root = "/";
private String trailingSlash = "/test/dir/file/name.txt/";
private String notNormalizedFile = "/test/dir/file//name.txt";
public File tmp;
@ -68,6 +68,11 @@ public class FileOpen {
return new File(normalFile);
}
@Benchmark
public File root() {
return new File(root);
}
@Benchmark
public File trailingSlash() {
return new File(trailingSlash);
@ -85,4 +90,32 @@ public class FileOpen {
&& tmp.isDirectory()
&& tmp.isFile();
}
@Benchmark
public void mixToPath(Blackhole bh) {
bh.consume(new File(normalFile).toPath());
bh.consume(new File(root).toPath());
bh.consume(new File(trailingSlash).toPath());
bh.consume(new File(notNormalizedFile).toPath());
}
@Benchmark
public Path normalizedToPath() {
return new File(normalFile).toPath();
}
@Benchmark
public Path rootToPath() {
return new File(root).toPath();
}
@Benchmark
public Path trailingSlashToPath() {
return new File(trailingSlash).toPath();
}
@Benchmark
public Path notNormalizedToPath() {
return new File(notNormalizedFile).toPath();
}
}