org.mmtk.utility.statistics
Class Stats

java.lang.Object
  org.mmtk.utility.statistics.Stats

public class Stats
extends Object

This class implements basic statistics functionality

GATHER_MARK_CONS_STATS

public static final boolean GATHER_MARK_CONS_STATS

See Also:

Constant Field Values

MAX_PHASES

static final int MAX_PHASES

Maximum number of gc/mutator phases that can be counted

See Also:

Constant Field Values

MAX_COUNTERS

static final int MAX_COUNTERS

Maximum number of counters that can be in operation

See Also:

Constant Field Values

counters

private static int counters

counter

private static Counter[] counter

phase

static int phase

gcCount

private static int gcCount

gatheringStats

static boolean gatheringStats

exceededPhaseLimit

static boolean exceededPhaseLimit

Stats

public Stats()

newCounter

static void newCounter(Counter ctr)

Add a new counter to the set of managed counters.

Parameters:

ctr - The counter to be added.

startGC

public static void startGC()

Start a new GC phase. This means notifying each counter of the phase change.

endGC

public static void endGC()

End a GC phase. This means notifying each counter of the phase change.

startAll

public static void startAll()

Start all implicitly started counters (i.e. those for whom start == true).

stopAll

public static void stopAll()

Stop all counters

stopAllCounters

private static void stopAllCounters()

Stop all counters

printStats

public static void printStats()

printStatsPlain

public static void printStatsPlain()

Print out statistics

printTotals

public static void printTotals()

Print out statistics totals

printPhases

public static void printPhases()

Print out statistics for each mutator/gc phase

printColumnNames

private static void printColumnNames()

Print out statistics column names

printStatsXml

public static void printStatsXml()

Print command-line options and statistics in XML format

openStatXml

private static void openStatXml(String name)

closeStatXml

private static void closeStatXml()

printTotalsXml

public static void printTotalsXml()

Print out statistics totals in Xml format

printTotalXml

private static void printTotalXml(Counter c,
                                  Stats.Phase phase)

Print a single total in an xml tag

Parameters:

c - The counter

phase - The phase

printPhaseStatXml

private static void printPhaseStatXml(Counter c,
                                      int p,
                                      Stats.Phase phase)

Print a single phase counter in an xml tag

Parameters:

c - The counter

p - The phase number

phase - The phase (null, "mu" or "gc")

printPhasesXml

public static void printPhasesXml()

Print out statistics for each mutator/gc phase in Xml format

gcCount

public static int gcCount()

Returns:

The GC count (inclusive of any in-progress GC)

gatheringStats

public static boolean gatheringStats()

Returns:

true if currently gathering stats