Examples with Blackhole org.openjdk.jmh.infra.Blackhole used on opensource projects

Example 1 with Blackhole

use of org.openjdk.jmh.infra.Blackhole in project isopov-jmh by isopov.

the class ConcurrentMapBenchmark method doWork.

private void doWork(Blackhole bh, ConcurrentMap<Integer, Integer> map) throws InterruptedException {
    ExecutorService pool = Executors.newFixedThreadPool(NUMBER_OF_THREADS);
    for (int i = 0; i < NUMBER_OF_TASKS; i++) {
        final int j = i;
        pool.execute(() -> {
            bh.consume(map.computeIfAbsent(tasks.get(j), val -> {
                Blackhole.consumeCPU(cpu);
                return val;
            }));
        });
    }
    pool.shutdown();
    pool.awaitTermination(1, TimeUnit.SECONDS);
}

Example 2 with Blackhole

use of org.openjdk.jmh.infra.Blackhole in project druid by druid-io.

the class ExpressionSelectorBenchmark method timeFloorUsingExtractionFn.

@Benchmark
public void timeFloorUsingExtractionFn(Blackhole blackhole) {
    final Sequence<Cursor> cursors = new QueryableIndexStorageAdapter(index).makeCursors(null, index.getDataInterval(), VirtualColumns.EMPTY, Granularities.ALL, false, null);
    final List<?> results = cursors.map(cursor -> {
        final DimensionSelector selector = cursor.getColumnSelectorFactory().makeDimensionSelector(new ExtractionDimensionSpec(ColumnHolder.TIME_COLUMN_NAME, "v", new TimeFormatExtractionFn(null, null, null, Granularities.HOUR, true)));
        consumeDimension(cursor, selector, blackhole);
        return null;
    }).toList();
    blackhole.consume(results);
}

Example 3 with Blackhole

use of org.openjdk.jmh.infra.Blackhole in project druid by druid-io.

the class ExpressionSelectorBenchmark method strlenUsingExpressionAsLong.

@Benchmark
public void strlenUsingExpressionAsLong(Blackhole blackhole) {
    final Sequence<Cursor> cursors = new QueryableIndexStorageAdapter(index).makeCursors(null, index.getDataInterval(), VirtualColumns.create(ImmutableList.of(new ExpressionVirtualColumn("v", "strlen(s)", ColumnType.STRING, TestExprMacroTable.INSTANCE))), Granularities.ALL, false, null);
    final List<?> results = cursors.map(cursor -> {
        final ColumnValueSelector selector = cursor.getColumnSelectorFactory().makeColumnValueSelector("v");
        consumeLong(cursor, selector, blackhole);
        return null;
    }).toList();
    blackhole.consume(results);
}

Example 4 with Blackhole

use of org.openjdk.jmh.infra.Blackhole in project druid by druid-io.

the class ExpressionSelectorBenchmark method stringConcatAndCompareOnLong.

@Benchmark
public void stringConcatAndCompareOnLong(Blackhole blackhole) {
    final Sequence<Cursor> cursors = new QueryableIndexStorageAdapter(index).makeCursors(null, index.getDataInterval(), VirtualColumns.create(ImmutableList.of(new ExpressionVirtualColumn("v", "concat(n, ' is my favorite number') == '3 is my favorite number'", ColumnType.LONG, TestExprMacroTable.INSTANCE))), Granularities.ALL, false, null);
    final List<?> results = cursors.map(cursor -> {
        final ColumnValueSelector selector = cursor.getColumnSelectorFactory().makeColumnValueSelector("v");
        consumeLong(cursor, selector, blackhole);
        return null;
    }).toList();
    blackhole.consume(results);
}

Example 5 with Blackhole

use of org.openjdk.jmh.infra.Blackhole in project druid by druid-io.

the class ExpressionSelectorBenchmark method strlenUsingExtractionFn.

@Benchmark
public void strlenUsingExtractionFn(Blackhole blackhole) {
    final Sequence<Cursor> cursors = new QueryableIndexStorageAdapter(index).makeCursors(null, index.getDataInterval(), VirtualColumns.EMPTY, Granularities.ALL, false, null);
    final List<?> results = cursors.map(cursor -> {
        final DimensionSelector selector = cursor.getColumnSelectorFactory().makeDimensionSelector(new ExtractionDimensionSpec("x", "v", StrlenExtractionFn.instance()));
        consumeDimension(cursor, selector, blackhole);
        return null;
    }).toList();
    blackhole.consume(results);
}