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* version 2 for more details (a copy is included in the LICENSE file that
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
* @test
* @summary Test detail memory comparison against early baseline
* @bug 8013917
* @key nmt jcmd
* @library /testlibrary /testlibrary/whitebox
* @build JcmdDiffCallsite
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail JcmdDiffCallsite
*/
import com.oracle.java.testlibrary.*;
import sun.hotspot.WhiteBox;
public class JcmdDiffCallsite {
public static void main(String args[]) throws Exception {
OutputAnalyzer output;
WhiteBox wb = WhiteBox.getWhiteBox();
// Grab my own PID
String pid = Integer.toString(ProcessTools.getProcessId());
ProcessBuilder pb = new ProcessBuilder();
// Use WB API to alloc and free with the mtTest type
long memAlloc1 = wb.NMTMalloc(512 * 1024);
// Use WB API to ensure that all data has been merged before we continue
if (!wb.NMTWaitForDataMerge()) {
throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
}
// Run 'jcmd <pid> VM.native_memory baseline'
pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "baseline"});
pb.start();
wb.NMTFree(memAlloc1);
// Use WB API to ensure that all data has been merged before we continue
if (!wb.NMTWaitForDataMerge()) {
throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
}
// Run 'jcmd <pid> VM.native_memory detail.diff'
pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail.diff"});
output = new OutputAnalyzer(pb.start());
// Use WB API to ensure that all data has been merged before we continue
if (!wb.NMTWaitForDataMerge()) {
throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
}
// above malloc callsite should report 0
output = new OutputAnalyzer(pb.start());
output.shouldContain("(malloc=0");
}
}