本文整理汇总了Java中sun.management.counter.perf.PerfInstrumentation类的典型用法代码示例。如果您正苦于以下问题：Java PerfInstrumentation类的具体用法？Java PerfInstrumentation怎么用？Java PerfInstrumentation使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
PerfInstrumentation类属于sun.management.counter.perf包，在下文中一共展示了PerfInstrumentation类的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: importFrom
import sun.management.counter.perf.PerfInstrumentation; //导入依赖的package包/类
/**
* Imports the connector address from the instrument buffer
* of the specified Java virtual machine.
*
* @param vmid an identifier that uniquely identifies a local Java virtual
* machine, or <code>0</code> to indicate the current Java virtual machine.
*
* @return the value of the connector address, or <code>null</code> if the
* target VM has not exported a connector address.
*
* @throws IOException An I/O error occurred while trying to acquire the
* instrumentation buffer.
*/
public static String importFrom(int vmid) throws IOException {
Perf perf = Perf.getPerf();
ByteBuffer bb;
try {
bb = perf.attach(vmid, "r");
} catch (IllegalArgumentException iae) {
throw new IOException(iae.getMessage());
}
List<Counter> counters =
new PerfInstrumentation(bb).findByPattern(CONNECTOR_ADDRESS_COUNTER);
Iterator<Counter> i = counters.iterator();
if (i.hasNext()) {
Counter c = i.next();
return (String) c.getValue();
} else {
return null;
}
}
示例2: importRemoteFrom
import sun.management.counter.perf.PerfInstrumentation; //导入依赖的package包/类
/**
* Imports the remote connector address and associated
* configuration properties from the instrument buffer
* of the specified Java virtual machine.
*
* @param vmid an identifier that uniquely identifies a local Java virtual
* machine, or <code>0</code> to indicate the current Java virtual machine.
*
* @return a map containing the remote connector's properties, or an empty
* map if the target VM has not exported the remote connector's properties.
*
* @throws IOException An I/O error occurred while trying to acquire the
* instrumentation buffer.
*/
public static Map<String, String> importRemoteFrom(int vmid) throws IOException {
Perf perf = Perf.getPerf();
ByteBuffer bb;
try {
bb = perf.attach(vmid, "r");
} catch (IllegalArgumentException iae) {
throw new IOException(iae.getMessage());
}
List<Counter> counters = new PerfInstrumentation(bb).getAllCounters();
Map<String, String> properties = new HashMap<>();
for (Counter c : counters) {
String name = c.getName();
if (name.startsWith(REMOTE_CONNECTOR_COUNTER_PREFIX) &&
!name.equals(CONNECTOR_ADDRESS_COUNTER)) {
properties.put(name, c.getValue().toString());
}
}
return properties;
}
示例3: importFrom
import sun.management.counter.perf.PerfInstrumentation; //导入依赖的package包/类
/**
* Imports the connector address from the instrument buffer
* of the specified Java virtual machine.
*
* @param vmid an identifier that uniquely identifies a local Java virtual
* machine, or <code>0</code> to indicate the current Java virtual machine.
*
* @return the value of the connector address, or <code>null</code> if the
* target VM has not exported a connector address.
*
* @throws IOException An I/O error occurred while trying to acquire the
* instrumentation buffer.
*/
public static String importFrom(int vmid) throws IOException {
Perf perf = Perf.getPerf();
ByteBuffer bb;
try {
bb = perf.attach(vmid, "r");
} catch (IllegalArgumentException iae) {
throw new IOException(iae.getMessage());
}
List counters =
new PerfInstrumentation(bb).findByPattern(CONNECTOR_ADDRESS_COUNTER);
Iterator i = counters.iterator();
if (i.hasNext()) {
Counter c = (Counter) i.next();
return (String) c.getValue();
} else {
return null;
}
}
示例4: importRemoteFrom
import sun.management.counter.perf.PerfInstrumentation; //导入依赖的package包/类
/**
* Imports the remote connector address and associated
* configuration properties from the instrument buffer
* of the specified Java virtual machine.
*
* @param vmid an identifier that uniquely identifies a local Java virtual
* machine, or <code>0</code> to indicate the current Java virtual machine.
*
* @return a map containing the remote connector's properties, or an empty
* map if the target VM has not exported the remote connector's properties.
*
* @throws IOException An I/O error occurred while trying to acquire the
* instrumentation buffer.
*/
public static Map<String, String> importRemoteFrom(int vmid) throws IOException {
Perf perf = Perf.getPerf();
ByteBuffer bb;
try {
bb = perf.attach(vmid, "r");
} catch (IllegalArgumentException iae) {
throw new IOException(iae.getMessage());
}
List counters = new PerfInstrumentation(bb).getAllCounters();
Map<String, String> properties = new HashMap<String, String>();
for (Object c : counters) {
String name = ((Counter) c).getName();
if (name.startsWith(REMOTE_CONNECTOR_COUNTER_PREFIX) &&
!name.equals(CONNECTOR_ADDRESS_COUNTER)) {
properties.put(name, ((Counter) c).getValue().toString());
}
}
return properties;
}