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/*******************************************************************************
* Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.test.perf;
import static java.lang.String.format;
import java.io.PrintWriter;
import org.jacoco.core.JaCoCo;
/**
* Formatted text output.
*/
public class PerfOutputWriter implements IPerfOutput {
private final PrintWriter writer;
public PerfOutputWriter(final PrintWriter writer) {
this.writer = writer;
writeHeader();
}
private void writeHeader() {
writer.printf("JaCoCo Performance Data%n%n");
writer.printf("JaCoCo Version: %s%n", JaCoCo.VERSION);
writer.printf("JVM Vendor: %s%n",
System.getProperty("java.vm.vendor"));
writer.printf("JVM Version: %s%n%n",
System.getProperty("java.vm.version"));
writer.println(
"scenario instr ref overhead");
writer.println(
"----------------------------------------------------------");
}
public void writeTimeResult(final String description, final long duration,
final long reference) {
final double dms = (double) duration / 1000000;
if (reference == NO_REFERENCE) {
writeResult(description, dms, "%.2f", "ms");
} else {
final double rms = (double) reference / 1000000;
writeResult(description, dms, rms, "%.2f", "ms");
}
}
public void writeByteResult(String description, long size, long reference) {
if (size == 0) {
return;
}
if (reference == NO_REFERENCE) {
writeResult(description, size, "%.0f", "bytes");
} else {
writeResult(description, size, reference, "%.0f", "bytes");
}
}
private void writeResult(final String description, final double subject,
String fmt, String unit) {
writer.printf("%-30s%8s %-6s%n", description,
format(fmt, Double.valueOf(subject)), unit);
}
private void writeResult(final String description, final double subject,
final double reference, String fmt, String unit) {
double overhead = 100 * (subject - reference) / reference;
writer.printf("%-30s%8s%8s %-6s%4.0f%%%n", description,
format(fmt, Double.valueOf(subject)),
format(fmt, Double.valueOf(reference)), unit,
Double.valueOf(overhead));
}
}
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