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src/java.management/share/classes/sun/management/ManagementFactoryHelper.java
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rev 58228 : 8238665: Add JFR event for direct memory statistics
*** 37,48 ****
import javax.management.RuntimeOperationsException;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
- import jdk.internal.access.JavaNioAccess;
import jdk.internal.access.SharedSecrets;
import java.util.ArrayList;
import java.util.List;
import java.lang.reflect.UndeclaredThrowableException;
--- 37,49 ----
import javax.management.RuntimeOperationsException;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import jdk.internal.access.SharedSecrets;
+ import jdk.internal.misc.VM;
+ import jdk.internal.misc.VM.BufferPool;
import java.util.ArrayList;
import java.util.List;
import java.lang.reflect.UndeclaredThrowableException;
*** 50,59 ****
--- 51,61 ----
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
+ import java.util.stream.Collectors;
/**
* ManagementFactoryHelper provides static factory methods to create
* instances of the management interface.
*/
*** 335,365 ****
}
static final PlatformLoggingMXBean MBEAN = getInstance();
}
! private static List<BufferPoolMXBean> bufferPools = null;
! public static synchronized List<BufferPoolMXBean> getBufferPoolMXBeans() {
if (bufferPools == null) {
! bufferPools = new ArrayList<>(2);
! bufferPools.add(createBufferPoolMXBean(SharedSecrets.getJavaNioAccess()
! .getDirectBufferPool()));
! bufferPools.add(createBufferPoolMXBean(sun.nio.ch.FileChannelImpl
! .getMappedBufferPool()));
! bufferPools.add(createBufferPoolMXBean(sun.nio.ch.FileChannelImpl
! .getSyncMappedBufferPool()));
}
return bufferPools;
}
private final static String BUFFER_POOL_MXBEAN_NAME = "java.nio:type=BufferPool";
/**
* Creates management interface for the given buffer pool.
*/
private static BufferPoolMXBean
! createBufferPoolMXBean(final JavaNioAccess.BufferPool pool)
{
return new BufferPoolMXBean() {
private volatile ObjectName objname; // created lazily
@Override
public ObjectName getObjectName() {
--- 337,367 ----
}
static final PlatformLoggingMXBean MBEAN = getInstance();
}
! private static volatile List<BufferPoolMXBean> bufferPools;
! public static List<BufferPoolMXBean> getBufferPoolMXBeans() {
if (bufferPools == null) {
! synchronized (ManagementFactoryHelper.class) {
! if (bufferPools == null) {
! bufferPools = VM.getBufferPools().stream()
! .map(ManagementFactoryHelper::createBufferPoolMXBean)
! .collect(Collectors.toList());
! }
! }
}
return bufferPools;
}
private final static String BUFFER_POOL_MXBEAN_NAME = "java.nio:type=BufferPool";
/**
* Creates management interface for the given buffer pool.
*/
private static BufferPoolMXBean
! createBufferPoolMXBean(final BufferPool pool)
{
return new BufferPoolMXBean() {
private volatile ObjectName objname; // created lazily
@Override
public ObjectName getObjectName() {
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