org.fusesource.hawtjni.runtime

Class NativeStats

java.lang.Object

org.fusesource.hawtjni.runtime.NativeStats

public class NativeStats
extends java.lang.Object

Instructions on how to use the NativeStats tool with a standalone SWT example:

1. Compile the native libraries defining the NATIVE_STATS flag.
2. Add the following code around the sections of interest to dump the native calls done in that section.

         StatsInterface si = MyFooStatsInterface.INSTANCE;
         NativeStats stats = new NativeStats(si); 
         ... // your code
         stats.diff().dump(System.out);
         

3. Or add the following code at a given point to dump a snapshot of the native calls done until that point.

         stats.snapshot().dump(System.out);
         

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NativeStats.NativeFunction
static interface	NativeStats.StatsInterface

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.HashMap<NativeStats.StatsInterface,java.util.ArrayList<NativeStats.NativeFunction>>	snapshot

Constructor Summary

Constructors

Modifier	Constructor and Description
	NativeStats(java.util.Collection<NativeStats.StatsInterface> classes)
private	NativeStats(java.util.HashMap<NativeStats.StatsInterface,java.util.ArrayList<NativeStats.NativeFunction>> snapshot)
	NativeStats(NativeStats.StatsInterface... classes)

Method Summary

Modifier and Type	Method and Description
NativeStats	copy()
NativeStats	diff()
void	dump(java.io.PrintStream ps) Dumps the stats to the print stream in a JSON format.
void	reset()
NativeStats	snapshot()
private static java.util.HashMap<NativeStats.StatsInterface,java.util.ArrayList<NativeStats.NativeFunction>>	snapshot(java.util.Collection<NativeStats.StatsInterface> classes)
void	update()

Methods inherited from class java.lang.Object

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

Field Detail

snapshot

private final java.util.HashMap<NativeStats.StatsInterface,java.util.ArrayList<NativeStats.NativeFunction>> snapshot

Constructor Detail

NativeStats

public NativeStats(NativeStats.StatsInterface... classes)

NativeStats

public NativeStats(java.util.Collection<NativeStats.StatsInterface> classes)

NativeStats

private NativeStats(java.util.HashMap<NativeStats.StatsInterface,java.util.ArrayList<NativeStats.NativeFunction>> snapshot)

Method Detail

reset

public void reset()

update

public void update()

snapshot

public NativeStats snapshot()

copy

public NativeStats copy()

diff

public NativeStats diff()

dump

public void dump(java.io.PrintStream ps)

Dumps the stats to the print stream in a JSON format.

Parameters:

ps -

snapshot

private static java.util.HashMap<NativeStats.StatsInterface,java.util.ArrayList<NativeStats.NativeFunction>> snapshot(java.util.Collection<NativeStats.StatsInterface> classes)