com.persistit.util

Class Debug

java.lang.Object

com.persistit.util.Debug

public class Debug
extends Object

Internal helper methods used to help verify code correctness.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Debug.Dbg

Field Summary

Fields

Modifier and Type	Field and Description
static Debug.Dbg	$assert0
static Debug.Dbg	$assert1
static boolean	ENABLED
static Random	RANDOM
static boolean	VERIFY_PAGES

Constructor Summary

Constructors

Constructor and Description
Debug()

Method Summary

Modifier and Type	Method and Description
static String	asString(Throwable t)
static String	callStack(int from, int to)
static void	debugPause(float probability, long millis) Debugging aid: code can invoke this method to introduce a pause.
static long	elapsedTime()
static long	now()
static void	setStartTime(long startTime)
static boolean	suspend() Assert this method invocation anywhere you want to suspend a thread.
static String	trace(int from, int to)

Methods inherited from class java.lang.Object

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

Field Detail

ENABLED

public static final boolean ENABLED

See Also:

Constant Field Values

VERIFY_PAGES

public static final boolean VERIFY_PAGES

See Also:

Constant Field Values

RANDOM

public static final Random RANDOM

$assert0

public static Debug.Dbg $assert0

$assert1

public static Debug.Dbg $assert1

Constructor Detail

Debug

public Debug()

Method Detail

setStartTime

public static void setStartTime(long startTime)

elapsedTime

public static long elapsedTime()

now

public static long now()

trace

public static String trace(int from,
                           int to)

callStack

public static String callStack(int from,
                               int to)

suspend

public static boolean suspend()

Assert this method invocation anywhere you want to suspend a thread. For example, add this to cause execution to be suspended: assert(Debug.suspend()); This method always returns true so there will never be an AssertionError thrown.

Returns:

true

asString

public static String asString(Throwable t)

debugPause

public static void debugPause(float probability,
                              long millis)

Debugging aid: code can invoke this method to introduce a pause.

Parameters:

probability - Probability of pausing: 0 - 1.0f

millis - time interval in milliseconds