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sun.jvm.hotspot.debugger.posix

public abstract Class DSO

extends Object
implements LoadObject
Class Inheritance
All Implemented Interfaces
sun.jvm.hotspot.debugger.cdbg.LoadObject
Known Direct Subclasses
sun.jvm.hotspot.debugger.bsd.SharedObject, sun.jvm.hotspot.debugger.linux.SharedObject
Imports
sun.jvm.hotspot.debugger.*, sun.jvm.hotspot.debugger.cdbg.*

Provides a simple wrapper around the ELF library which handles relocation.

Field Summary

Modifier and TypeField and Description
private Address
private String
private long

Constructor Summary

AccessConstructor and Description
public
DSO(String filename, long size, Address relocation)

Method Summary

Modifier and TypeMethod and Description
public BlockSym
debugInfoForPC(Address pc)

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.debugInfoForPC.

Get debug information for the given program counter.

public boolean
equals(Object o)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

protected abstract long
public Address
getBase()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getBase.

Base address at which this loadobject was relocated at run-time

public CDebugInfoDataBase
getDebugInfoDataBase()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getDebugInfoDataBase.

Returns a debug info database for this loadobject if debug info is present; otherwise, returns null.

public String
getName()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getName.

Full path name of this loadobject

public long
getSize()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getSize.

Size of the loadobject in bytes (determines the range of program counters and data contained within this loadobject)

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

public LineNumberInfo
lineNumberForPC(Address pc)

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.lineNumberForPC.

Returns line number information for the given PC, including source file name (not specified whether this is an absolute or relative path) and start and end PCs for this line.

protected abstract Address
newAddress(long addr)

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

addrback to summary
private Address addr
filenameback to summary
private String filename
sizeback to summary
private long size

Constructor Detail

DSOback to summary
public DSO(String filename, long size, Address relocation)

Method Detail

debugInfoForPCback to summary
public BlockSym debugInfoForPC(Address pc) throws DebuggerException

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.debugInfoForPC.

Doc from sun.jvm.hotspot.debugger.cdbg.LoadObject.debugInfoForPC.

Get debug information for the given program counter. PC must be contained within this loadobject or a DebuggerException is thrown. Returns null if there is no debug information available (i.e., because this is not a debug build).

equalsback to summary
public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

getAddressValueback to summary
protected abstract long getAddressValue(Address addr)
getBaseback to summary
public Address getBase()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getBase.

Doc from sun.jvm.hotspot.debugger.cdbg.LoadObject.getBase.

Base address at which this loadobject was relocated at run-time

getDebugInfoDataBaseback to summary
public CDebugInfoDataBase getDebugInfoDataBase() throws DebuggerException

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getDebugInfoDataBase.

Doc from sun.jvm.hotspot.debugger.cdbg.LoadObject.getDebugInfoDataBase.

Returns a debug info database for this loadobject if debug info is present; otherwise, returns null.

getNameback to summary
public String getName()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getName.

Doc from sun.jvm.hotspot.debugger.cdbg.LoadObject.getName.

Full path name of this loadobject

getSizeback to summary
public long getSize()

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.getSize.

Doc from sun.jvm.hotspot.debugger.cdbg.LoadObject.getSize.

Size of the loadobject in bytes (determines the range of program counters and data contained within this loadobject)

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
lineNumberForPCback to summary
public LineNumberInfo lineNumberForPC(Address pc) throws DebuggerException

Implements sun.jvm.hotspot.debugger.cdbg.LoadObject.lineNumberForPC.

Doc from sun.jvm.hotspot.debugger.cdbg.LoadObject.lineNumberForPC.

Returns line number information for the given PC, including source file name (not specified whether this is an absolute or relative path) and start and end PCs for this line. Returns null if no line number information is available or if the given PC is not in this loadobject.

newAddressback to summary
protected abstract Address newAddress(long addr)