OpenJDK 1.23 · sun.jvm.hotspot.types.basic.BasicVtblAccess

Field Summary

Modifier and Type	Field and Description
protected String[]	dllNames
pack-priv static Object	nullAddress
protected SymbolLookup	symbolLookup
private Map<Type, Object>	typeToVtblMap

Constructor Summary

Access	Constructor and Description
public	BasicVtblAccess(SymbolLookup symbolLookup, String[] dllNames)

Method Summary

Modifier and Type	Method and Description
public void	clearCaches() Implements sun.jvm.hotspot.types.basic.VtblAccess.clearCaches. Clear any cached values from symbol lookups in the target process.
public Address	getVtblForType(Type type) Implements sun.jvm.hotspot.types.basic.VtblAccess.getVtblForType. This is the necessarily platform-specific implementation.
protected abstract String	vtblSymbolForType(Type type)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

dllNames	back to summary
protected String[] dllNames

nullAddress	back to summary
pack-priv static Object nullAddress

symbolLookup	back to summary
protected SymbolLookup symbolLookup

typeToVtblMap	back to summary
private Map<Type, Object> typeToVtblMap

Constructor Detail

BasicVtblAccess	back to summary
public BasicVtblAccess(SymbolLookup symbolLookup, String[] dllNames)

Method Detail

clearCaches	back to summary
public void clearCaches() Implements sun.jvm.hotspot.types.basic.VtblAccess.clearCaches. Doc from sun.jvm.hotspot.types.basic.VtblAccess.clearCaches. Clear any cached values from symbol lookups in the target process. It is important that this mechanism be fast and for that reason the default implementation memoizes type-to-vtbl mappings. However, if the target process is resumed, these mappings may become invalid.

clearCaches

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public void clearCaches()

Implements sun.jvm.hotspot.types.basic.VtblAccess.clearCaches.

Doc from sun.jvm.hotspot.types.basic.VtblAccess.clearCaches.

Clear any cached values from symbol lookups in the target process. It is important that this mechanism be fast and for that reason the default implementation memoizes type-to-vtbl mappings. However, if the target process is resumed, these mappings may become invalid.

getVtblForType	back to summary
public Address getVtblForType(Type type) Implements sun.jvm.hotspot.types.basic.VtblAccess.getVtblForType. Doc from sun.jvm.hotspot.types.basic.VtblAccess.getVtblForType. This is the necessarily platform-specific implementation. Attempt to return the address of the vtbl for the given polymorphic C++ type. This value will be used when searching nearby memory to implement isOfType() in as platform-independent a manner as possible. Returns null if this value was not available for the given type, which might indicate that the type was not polymorphic or that an error occurred while trying to find the symbol. Note that this method does not support multiple inheritance.

getVtblForType

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public Address getVtblForType(Type type)

Implements sun.jvm.hotspot.types.basic.VtblAccess.getVtblForType.

Doc from sun.jvm.hotspot.types.basic.VtblAccess.getVtblForType.

This is the necessarily platform-specific implementation. Attempt to return the address of the vtbl for the given polymorphic C++ type. This value will be used when searching nearby memory to implement isOfType() in as platform-independent a manner as possible. Returns null if this value was not available for the given type, which might indicate that the type was not polymorphic or that an error occurred while trying to find the symbol. Note that this method does not support multiple inheritance.