com.microsoft.z3.Statistics Maven / Gradle / Ivy
/**
Copyright (c) 2012-2014 Microsoft Corporation
Module Name:
Statistics.java
Abstract:
Author:
@author Christoph Wintersteiger (cwinter) 2012-03-15
Notes:
**/
package com.microsoft.z3;
/**
* Objects of this class track statistical information about solvers.
**/
public class Statistics extends Z3Object {
/**
* Statistical data is organized into pairs of [Key, Entry], where every
* Entry is either a {@code DoubleEntry} or a {@code UIntEntry}
**/
public class Entry
{
/**
* The key of the entry.
**/
public String Key;
/**
* The uint-value of the entry.
**/
public int getUIntValue()
{
return m_int;
}
/**
* The double-value of the entry.
**/
public double getDoubleValue()
{
return m_double;
}
/**
* True if the entry is uint-valued.
**/
public boolean isUInt()
{
return m_is_int;
}
/**
* True if the entry is double-valued.
**/
public boolean isDouble()
{
return m_is_double;
}
/**
* The string representation of the entry's value.
*
* @throws Z3Exception
**/
public String getValueString()
{
if (isUInt()) {
return Integer.toString(m_int);
} else if (isDouble()) {
return Double.toString(m_double);
} else {
throw new Z3Exception("Unknown statistical entry type");
}
}
/**
* The string representation of the Entry.
**/
@Override
public String toString() {
return Key + ": " + getValueString();
}
private boolean m_is_int = false;
private boolean m_is_double = false;
private int m_int = 0;
private double m_double = 0.0;
Entry(String k, int v)
{
Key = k;
m_is_int = true;
m_int = v;
}
Entry(String k, double v)
{
Key = k;
m_is_double = true;
m_double = v;
}
}
/**
* A string representation of the statistical data.
**/
@Override
public String toString()
{
return Native.statsToString(getContext().nCtx(), getNativeObject());
}
/**
* The number of statistical data.
**/
public int size()
{
return Native.statsSize(getContext().nCtx(), getNativeObject());
}
/**
* The data entries.
*
* @throws Z3Exception
**/
public Entry[] getEntries()
{
int n = size();
Entry[] res = new Entry[n];
for (int i = 0; i < n; i++)
{
Entry e;
String k = Native.statsGetKey(getContext().nCtx(), getNativeObject(), i);
if (Native.statsIsUint(getContext().nCtx(), getNativeObject(), i)) {
e = new Entry(k, Native.statsGetUintValue(getContext().nCtx(),
getNativeObject(), i));
} else if (Native.statsIsDouble(getContext().nCtx(), getNativeObject(), i)) {
e = new Entry(k, Native.statsGetDoubleValue(getContext().nCtx(),
getNativeObject(), i));
} else {
throw new Z3Exception("Unknown data entry value");
}
res[i] = e;
}
return res;
}
/**
* The statistical counters.
**/
public String[] getKeys()
{
int n = size();
String[] res = new String[n];
for (int i = 0; i < n; i++)
res[i] = Native.statsGetKey(getContext().nCtx(), getNativeObject(), i);
return res;
}
/**
* The value of a particular statistical counter.
* Remarks: Returns null if
* the key is unknown.
*
* @throws Z3Exception
**/
public Entry get(String key)
{
int n = size();
Entry[] es = getEntries();
for (int i = 0; i < n; i++) {
if (es[i].Key.equals(key)) {
return es[i];
}
}
return null;
}
Statistics(Context ctx, long obj)
{
super(ctx, obj);
}
@Override
void incRef() {
getContext().getStatisticsDRQ().storeReference(getContext(), this);
}
@Override
void addToReferenceQueue() {
Native.statsIncRef(getContext().nCtx(), getNativeObject());
}
}