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* version 2 for more details (a copy is included in the LICENSE file that
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*
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.openjdk.bench.java.util;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
import java.util.*;
import java.util.concurrent.TimeUnit;
/**
* Micros for the various collections implemented in
* java.util.ImmutableCollections
*/
@State(Scope.Benchmark)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
public class ImmutableColls {
public static String[] STRINGS = {"hi", "all", "of", "you"};
public static List<String> l0 = List.of();
public static List<String> l1 = List.of(Arrays.copyOf(STRINGS, 1));
public static List<String> l2 = List.of(Arrays.copyOf(STRINGS, 2));
public static List<String> l3 = List.of(Arrays.copyOf(STRINGS, 3));
public static List<String> l4 = List.of(Arrays.copyOf(STRINGS, 4));
public static Set<String> s0 = Set.copyOf(l0);
public static Set<String> s1 = Set.copyOf(l1);
public static Set<String> s2 = Set.copyOf(l2);
public static Set<String> s3 = Set.copyOf(l3);
public static Set<String> s4 = Set.copyOf(l4);
public static Map<String, String> m0 = Map.of();
public static Map<String, String> m1 = Map.of(STRINGS[0], STRINGS[0]);
public static Map<String, String> m2 = Map.of(STRINGS[0], STRINGS[0],
STRINGS[1], STRINGS[1]);
public static Map<String, String> m3 = Map.of(STRINGS[0], STRINGS[0],
STRINGS[1], STRINGS[1],
STRINGS[2], STRINGS[2]);
public static Map<String, String> m4 = Map.of(STRINGS[0], STRINGS[0],
STRINGS[1], STRINGS[1],
STRINGS[2], STRINGS[2],
STRINGS[3], STRINGS[3]);
public static List<String> a0 = new ArrayList<>(l0);
public static List<String> a1 = new ArrayList<>(l1);
public static List<String> a2 = new ArrayList<>(l2);
public static List<String> a3 = new ArrayList<>(l3);
public static List<String> a4 = new ArrayList<>(l4);
public static final List<String> fl0 = List.of();
public static final List<String> fl1 = List.copyOf(l1);
public static final List<String> fl2 = List.copyOf(l2);
public static final List<String> fl3 = List.copyOf(l3);
public static final List<String> fl4 = List.copyOf(l4);
public static final List<String> fsl0 = fl0.subList(0, 0);
public static final List<String> fsl1 = fl2.subList(1, 2);
public static final List<String> fsl2 = fl3.subList(0, 2);
public static final List<String> fsl3 = fl4.subList(0, 3);
public static final Set<String> fs0 = Set.copyOf(l0);
public static final Set<String> fs1 = Set.copyOf(l1);
public static final Set<String> fs2 = Set.copyOf(l2);
public static final Set<String> fs3 = Set.copyOf(l3);
public static final Set<String> fs4 = Set.copyOf(l4);
public static final Map<String, String> fm0 = Map.copyOf(m0);
public static final Map<String, String> fm1 = Map.copyOf(m1);
public static final Map<String, String> fm2 = Map.copyOf(m2);
public static final Map<String, String> fm3 = Map.copyOf(m3);
public static final Map<String, String> fm4 = Map.copyOf(m4);
public static final List<String> fa0 = new ArrayList<>(l0);
public static final List<String> fa1 = new ArrayList<>(l1);
public static final List<String> fa2 = new ArrayList<>(l2);
public static final List<String> fa3 = new ArrayList<>(l3);
public static final List<String> fa4 = new ArrayList<>(l4);
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int sumSizesList() {
return sizeOf(l0) +
sizeOf(l1) +
sizeOf(l2) +
sizeOf(l3) +
sizeOf(l4);
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int finalSumSizesList() {
return sizeOf(fl0) +
sizeOf(fl1) +
sizeOf(fl2) +
sizeOf(fl3) +
sizeOf(fl4);
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int sumSizesArrayList() {
return sizeOf2(a0) +
sizeOf2(a1) +
sizeOf2(a2) +
sizeOf2(a3) +
sizeOf2(a4);
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int finalSumSizesArrayList() {
return sizeOf2(fa0) +
sizeOf2(fa1) +
sizeOf2(fa2) +
sizeOf2(fa3) +
sizeOf2(fa4);
}
public int sizeOf2(List<String> list) {
return list.size();
}
public int sizeOf(List<String> list) {
return list.size();
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int getFromList() {
return get(l1, 0).length() +
get(l2, 1).length() +
get(l3, 2).length() +
get(l4, 3).length();
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int finalGetFromList() {
return get(fl1, 0).length() +
get(fl2, 1).length() +
get(fl3, 2).length() +
get(fl4, 3).length();
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void toArrayFromSet(Blackhole bh) {
bh.consume(fs4.toArray());
bh.consume(s1.toArray());
bh.consume(s3.toArray());
bh.consume(fs2.toArray());
bh.consume(s0.toArray());
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void toArrayFromMap(Blackhole bh) {
bh.consume(fm4.entrySet().toArray());
bh.consume(m1.entrySet().toArray());
bh.consume(m3.entrySet().toArray());
bh.consume(fm2.entrySet().toArray());
bh.consume(m0.entrySet().toArray());
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void toArrayFromList(Blackhole bh) {
bh.consume(fl4.toArray());
bh.consume(fl1.toArray());
bh.consume(l3.toArray());
bh.consume(l0.toArray());
bh.consume(fsl3.toArray());
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void toTypedArrayFromSet(Blackhole bh) {
bh.consume(fs4.toArray(new String[0]));
bh.consume(s1.toArray(new String[0]));
bh.consume(s3.toArray(new String[0]));
bh.consume(fs2.toArray(new String[0]));
bh.consume(s0.toArray(new String[0]));
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void toTypedArrayFromMap(Blackhole bh) {
bh.consume(fm4.entrySet().toArray(new Map.Entry[0]));
bh.consume(m1.entrySet().toArray(new Map.Entry[0]));
bh.consume(m3.entrySet().toArray(new Map.Entry[0]));
bh.consume(fm2.entrySet().toArray(new Map.Entry[0]));
bh.consume(m0.entrySet().toArray(new Map.Entry[0]));
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void toTypedArrayFromList(Blackhole bh) {
bh.consume(fl4.toArray(new String[0]));
bh.consume(fl1.toArray(new String[0]));
bh.consume(l3.toArray(new String[0]));
bh.consume(l0.toArray(new String[0]));
bh.consume(fsl3.toArray(new String[0]));
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public void copyOfLists(Blackhole bh) {
bh.consume(List.copyOf(fl1));
bh.consume(List.copyOf(fl4));
bh.consume(List.copyOf(fsl2));
bh.consume(List.copyOf(fsl3));
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public int finalGetFromArrayList() {
return get2(fa1, 0).length() +
get2(fa2, 1).length() +
get2(fa3, 2).length() +
get2(fa4, 3).length();
}
public String get2(List<String> list, int idx) {
return list.get(idx);
}
public String get(List<String> list, int idx) {
return list.get(idx);
}
@Benchmark
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
public Set<String> createSetOf() {
return Set.of(STRINGS);
}
}