Package ghidra.trace.database.memory

Class DBTraceMemoryBufferEntry

java.lang.Object

ghidra.program.database.DatabaseObject

ghidra.util.database.DBAnnotatedObject

ghidra.trace.database.memory.DBTraceMemoryBufferEntry

public class DBTraceMemoryBufferEntry
extends DBAnnotatedObject

Field Summary

Fields

Modifier and Type	Field	Description
protected final DBHandle	dbh

Fields inherited from class ghidra.program.database.DatabaseObject

key

Constructor Summary

Constructors

Constructor	Description
DBTraceMemoryBufferEntry(DBHandle dbh, DBCachedObjectStore<?> store, DBRecord record)

Method Summary

Modifier and Type	Method	Description
int	acquireBlock()
void	acquireBlock(int blockNum)
int	cmpBytes(ByteBuffer buf, int blkOffset, int len, int blockNum)
void	compress()
void	copyFrom(int dstBlockNum, DBTraceMemoryBufferEntry srcBuf, int srcBlockNum)
void	decompress()
protected int	doCmpCompressedBytes(ByteBuffer buf, int blkOffset, int len, int blockNum)
protected void	doGetBlock(int blockNum, byte[] data)
protected void	doGetCompressedBlock(int blockNum, byte[] data)
protected int	doGetCompressedBytes(ByteBuffer buf, int srcOffset, int len, int blockNum)
protected void	fresh(boolean created)	Extension point: Called when the object's fields are populated.
int	getBytes(ByteBuffer buf, int srcOffset, int len, int blockNum)
protected boolean	isCompressed()
boolean	isEmpty()
boolean	isInUse(int blockNum)
protected boolean	isSane(int offset, int len, int blockNum)
void	releaseBlock(int blockNum)
int	setBytes(ByteBuffer buf, int dstOffset, int len, int blockNum)

Methods inherited from class ghidra.util.database.DBAnnotatedObject

doRefresh, doUpdateAll, doUpdated, doWrite, getObjectKey, getTableName, isDeleted, refresh, refresh, update, update, update, update

Methods inherited from class ghidra.program.database.DatabaseObject

checkDeleted, checkIsValid, checkIsValid, getKey, isDeleted, isInvalid, keyChanged, setDeleted, setInvalid, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

dbh

protected final DBHandle dbh

Constructor Details

DBTraceMemoryBufferEntry

public DBTraceMemoryBufferEntry(DBHandle dbh,
 DBCachedObjectStore<?> store,
 DBRecord record)

Method Details

isCompressed

protected boolean isCompressed()

fresh

protected void fresh(boolean created)
              throws IOException

Description copied from class: DBAnnotatedObject

Extension point: Called when the object's fields are populated.

This provides an opportunity for the object to initialize any non-database-backed fields that depend on the database-backed fields. Note that its use may indicate a situation better solved by a custom DBCachedObjectStoreFactory.DBFieldCodec. If both the database-backed and non-database-backed fields are used frequently, then a codec may not be indicated. If the database-backed fields are only used in this method or to encode another frequently-used field, then a codec is likely better.

For a new object, the database-backed fields remain at their initial values. They will be saved after this method returns, so they may be further initialized with custom logic.

For an object loaded from the database, the database-backed fields are already populated from the record when this method is called. They are not automatically saved after this method returns. This method should not further initialize database-backed fields in this case.

Overrides:

fresh in class DBAnnotatedObject

Parameters:

created - true when object is being created, or false when it is being loaded.

Throws:

IOException - if further initialization fails.

compress

public void compress()
              throws IOException

Throws:

IOException

decompress

public void decompress()
                throws IOException

Throws:

IOException

isSane

protected boolean isSane(int offset,
 int len,
 int blockNum)

setBytes

public int setBytes(ByteBuffer buf,
 int dstOffset,
 int len,
 int blockNum)
             throws IndexOutOfBoundsException,
IOException

Throws:

IndexOutOfBoundsException

IOException

getBytes

public int getBytes(ByteBuffer buf,
 int srcOffset,
 int len,
 int blockNum)
             throws IndexOutOfBoundsException,
IOException

Throws:

IndexOutOfBoundsException

IOException

doGetCompressedBytes

protected int doGetCompressedBytes(ByteBuffer buf,
 int srcOffset,
 int len,
 int blockNum)
                            throws IOException

Throws:

IOException

doGetBlock

protected void doGetBlock(int blockNum,
 byte[] data)
                   throws IndexOutOfBoundsException,
IOException

Throws:

IndexOutOfBoundsException

IOException

doGetCompressedBlock

protected void doGetCompressedBlock(int blockNum,
 byte[] data)
                             throws IOException

Throws:

IOException

copyFrom

public void copyFrom(int dstBlockNum,
 DBTraceMemoryBufferEntry srcBuf,
 int srcBlockNum)
              throws IndexOutOfBoundsException,
IOException

Throws:

IndexOutOfBoundsException

IOException

cmpBytes

public int cmpBytes(ByteBuffer buf,
 int blkOffset,
 int len,
 int blockNum)
             throws IndexOutOfBoundsException,
IOException

Throws:

IndexOutOfBoundsException

IOException

doCmpCompressedBytes

protected int doCmpCompressedBytes(ByteBuffer buf,
 int blkOffset,
 int len,
 int blockNum)
                            throws IOException

Throws:

IOException

isInUse

public boolean isInUse(int blockNum)

acquireBlock

public int acquireBlock()

acquireBlock

public void acquireBlock(int blockNum)

releaseBlock

public void releaseBlock(int blockNum)

isEmpty

public boolean isEmpty()