Microsoft SDK for Java

IJavaEventMonitorIDInfo2::
GetSpecialClassProperties

The GetSpecialClassProperties method of the IJavaEventMonitorIDInfo2 interface is called by a profiler to obtain a list of classes that have special properties.

The GetSpecialClassProperties method is implemented only by the IJavaEventMonitorIDInfo2 and IJavaEventMonitorIDInfo3 interfaces.

Syntax

HRESULT GetSpecialClassProperties(unsigned *pnspecial_classes, ClassID **ppclass_ids, DWORD **ppclass_flags);

Return Value

An array of ClassIDs and an array of associated flags for these ClassIDs for classes for which special information is available.

Parameters

[out] *pnspecial_classes The number of ClassIDs in the array.
[out] **ppclass_ids A pointer to an array of ClassIDs that have special properties.
[out] **ppclass_flags A pointer to a parallel array of a JVM_CLASS_PROPERTIES bitmask for each class with special properties.

Remarks

Classes for which special information is available include instances of java.lang.Class, java.lang.reflect.Method, java.lang.reflect.Field, java.lang.String, and java.lang.StringBuffer.

The possible bitmask flag for each special class can be a combination of the JVM_CLASS_PROPERTIES types or the last predefined combined type.

JVM_CLASS_PROPERTIES

Constant Value Description
JVM_CLS_VARIABLE_SIZE 1 Fields might not be present in all instances of the class.
JVM_CLS_HAS_DESCRIPTION 2 The object might proxy to, or contain internal VM data structures. The DescribeObject method can be used to describe the contents of instances.
ALL_JVM_CLS_PROPERTIES 3 All the previous flags are enabled.

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