test/loops/IntMapCheck.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */
/**
 * @test
 * @synopsis Times and checks basic map operations
 */
import java.io.*;
import java.util.*;

public class IntMapCheck {
    static int absentSize;
    static int absentMask;
    static Integer[] absent;
    static final Integer MISSING = new Integer(Integer.MIN_VALUE);
    static TestTimer timer = new TestTimer();

    static void reallyAssert(boolean b) {
        if (!b) throw new Error("Failed Assertion");
    }

    public static void main(String[] args) throws Exception {
        Class<?> mapClass = java.util.concurrent.ConcurrentHashMap.class;
        int numTests = 50;
        int size = 75000;

        if (args.length > 0) {
            try {
                mapClass = Class.forName(args[0]);
            } catch (ClassNotFoundException e) {
                throw new RuntimeException("Class " + args[0] + " not found.");
            }
        }

        if (args.length > 1)
            numTests = Integer.parseInt(args[1]);

        if (args.length > 2)
            size = Integer.parseInt(args[2]);

        boolean doSerializeTest = args.length > 3;

        System.out.println("Testing " + mapClass.getName() + " trials: " + numTests + " size: " + size);

        absentSize = 4;
        while (absentSize < size) absentSize <<= 1;
        absentMask = absentSize-1;
        absent = new Integer[absentSize];
        for (int i = 0; i < absentSize/2; ++i)
            absent[i] = Integer.valueOf(-i - 1);
        for (int i = absentSize/2; i < absentSize; ++i)
            absent[i] = Integer.valueOf(size + i + 1);

        Integer[] key = new Integer[size];
        for (int i = 0; i < size; ++i)
            key[i] = Integer.valueOf(i);

        for (int rep = 0; rep < numTests; ++rep) {
            runTest(newMap(mapClass), key);
            if ((rep & 3) == 3 && rep < numTests - 1) {
                shuffle(key);
                //                Thread.sleep(50);
            }
        }

        TestTimer.printStats();

        if (doSerializeTest)
            stest(newMap(mapClass), size);
    }

    static Map<Integer,Integer> newMap(Class<?> cl) {
        try {
            return (Map<Integer,Integer>) cl.getConstructor().newInstance();
        } catch (Exception e) {
            throw new RuntimeException("Can't instantiate " + cl + ": " + e);
        }
    }

    static void runTest(Map<Integer,Integer> s, Integer[] key) {
        int size = key.length;
        long startTime = System.nanoTime();
        test(s, key);
        long time = System.nanoTime() - startTime;
    }

    static void t1(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect, int iters) {
        int sum = 0;
        timer.start(nm, n * iters);
        for (int j = 0; j < iters; ++j) {
            for (int i = 0; i < n; i++) {
                if (s.get(key[i]) != null) ++sum;
            }
        }
        timer.finish();
        reallyAssert(sum == expect * iters);
    }

    static void t1Boxed(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
        int sum = 0;
        int iters = 8;
        timer.start(nm, n * iters);
        for (int j = 0; j < iters; ++j) {
            for (int i = 0; i < n; i++) {
                if (s.get(i) != i) ++sum;
            }
        }
        timer.finish();
        reallyAssert(sum == expect * iters);
    }

    static void t2(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.remove(key[i]) != null) ++sum;
        }
        timer.finish();
        reallyAssert(sum == expect);
    }

    static void t3(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            Integer k = key[i];
            Integer v = absent[i & absentMask];
            if (s.put(k, v) == null) ++sum;
        }
        timer.finish();
        reallyAssert(sum == expect);
    }

    static void t4(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.containsKey(key[i])) ++sum;
        }
        timer.finish();
        reallyAssert(sum == expect);
    }

    static void t5(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n/2);
        for (int i = n-2; i >= 0; i-=2) {
            if (s.remove(key[i]) != null) ++sum;
        }
        timer.finish();
        reallyAssert(sum == expect);
    }

    static void t6(String nm, int n, Map<Integer,Integer> s, Integer[] k1, Integer[] k2) {
        int sum = 0;
        timer.start(nm, n * 2);
        for (int i = 0; i < n; i++) {
            if (s.get(k1[i]) != null) ++sum;
            if (s.get(k2[i & absentMask]) != null) ++sum;
        }
        timer.finish();
        reallyAssert(sum == n);
    }

    static void t7(String nm, int n, Map<Integer,Integer> s, Integer[] k1, Integer[] k2) {
        int sum = 0;
        timer.start(nm, n * 2);
        for (int i = 0; i < n; i++) {
            if (s.containsKey(k1[i])) ++sum;
            if (s.containsKey(k2[i & absentMask])) ++sum;
        }
        timer.finish();
        reallyAssert(sum == n);
    }

    static void t8(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
        int sum = 0;
        timer.start(nm, n);
        for (int i = 0; i < n; i++) {
            if (s.get(key[i]) != null) ++sum;
        }
        timer.finish();
        reallyAssert(sum == expect);
    }

    static void t9(Map<Integer,Integer> s) {
        int sum = 0;
        int iters = 20;
        timer.start("ContainsValue (/n)     ", iters * s.size());
        int step = absentSize / iters;
        for (int i = 0; i < absentSize; i += step)
            if (s.containsValue(absent[i])) ++sum;
        timer.finish();
        reallyAssert(sum != 0);
    }

    static void ktest(Map<Integer,Integer> s, int size, Integer[] key) {
        timer.start("ContainsKey            ", size);
        Set ks = s.keySet();
        int sum = 0;
        for (int i = 0; i < size; i++) {
            if (ks.contains(key[i])) ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);
    }

    static void ittest1(Map<Integer,Integer> s, int size) {
        int sum = 0;
        timer.start("Iter Key               ", size);
        for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
            if (it.next() != MISSING)
                ++sum;
        }
        timer.finish();
        //        if (sum != size)
        //            System.out.println("iters " + sum + " size " + size);
        reallyAssert(sum == size);
    }

    static void ittest2(Map<Integer,Integer> s, int size) {
        int sum = 0;
        timer.start("Iter Value             ", size);
        for (Iterator it = s.values().iterator(); it.hasNext(); ) {
            if (it.next() != MISSING)
                ++sum;
        }
        timer.finish();
        //        if (sum != size)
        //            System.out.println("iters " + sum + " size " + size);
        reallyAssert(sum == size);
    }
    static void ittest3(Map<Integer,Integer> s, int size) {
        int sum = 0;
        timer.start("Iter Entry             ", size);
        for (Iterator it = s.entrySet().iterator(); it.hasNext(); ) {
            if (it.next() != MISSING)
                ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);
    }

    static void ittest4(Map<Integer,Integer> s, int size, int pos) {
        IdentityHashMap seen = new IdentityHashMap(size);
        reallyAssert(s.size() == size);
        int sum = 0;
        timer.start("Iter XEntry            ", size);
        Iterator it = s.entrySet().iterator();
        Integer k = null;
        Integer v = null;
        for (int i = 0; i < size-pos; ++i) {
            Map.Entry<Integer,Integer> x = (Map.Entry<Integer,Integer>)(it.next());
            k = x.getKey();
            v = x.getValue();
            seen.put(k, k);
            if (v != MISSING)
                ++sum;
        }
        reallyAssert(s.containsKey(k));
        it.remove();
        reallyAssert(!s.containsKey(k));
        while (it.hasNext()) {
            Map.Entry<Integer,Integer> x = (Map.Entry<Integer,Integer>)(it.next());
            Integer k2 = x.getKey();
            seen.put(k2, k2);
            if (k2 != MISSING)
                ++sum;
        }

        reallyAssert(s.size() == size-1);
        s.put(k, v);
        reallyAssert(seen.size() == size);
        timer.finish();
        reallyAssert(sum == size);
        reallyAssert(s.size() == size);
    }

    static void ittest(Map<Integer,Integer> s, int size) {
        for (int i = 0; i < 4; ++i) {
            ittest1(s, size);
            ittest2(s, size);
            ittest3(s, size);
        }
        //        for (int i = 0; i < size-1; ++i)
        //            ittest4(s, size, i);
    }

    static void entest1(Hashtable ht, int size) {
        int sum = 0;

        timer.start("Iter Enumeration Key   ", size);
        for (Enumeration en = ht.keys(); en.hasMoreElements(); ) {
            if (en.nextElement() != MISSING)
                ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);
    }

    static void entest2(Hashtable ht, int size) {
        int sum = 0;
        timer.start("Iter Enumeration Value ", size);
        for (Enumeration en = ht.elements(); en.hasMoreElements(); ) {
            if (en.nextElement() != MISSING)
                ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);
    }

    static void entest3(Hashtable ht, int size) {
        int sum = 0;

        timer.start("Iterf Enumeration Key  ", size);
        Enumeration en = ht.keys();
        for (int i = 0; i < size; ++i) {
            if (en.nextElement() != MISSING)
                ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);
    }

    static void entest4(Hashtable ht, int size) {
        int sum = 0;
        timer.start("Iterf Enumeration Value", size);
        Enumeration en = ht.elements();
        for (int i = 0; i < size; ++i) {
            if (en.nextElement() != MISSING)
                ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);
    }

    static void entest(Map<Integer,Integer> s, int size) {
        if (s instanceof Hashtable) {
            Hashtable ht = (Hashtable) s;
            //            entest3(ht, size);
            //            entest4(ht, size);
            entest1(ht, size);
            entest2(ht, size);
            entest1(ht, size);
            entest2(ht, size);
            entest1(ht, size);
            entest2(ht, size);
        }
    }

    static void rtest(Map<Integer,Integer> s, int size) {
        timer.start("Remove (iterator)      ", size);
        for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
            it.next();
            it.remove();
        }
        reallyAssert(s.isEmpty());
        timer.finish();
    }

    static void stest(Map<Integer,Integer> s, int size) throws Exception {
        if (!(s instanceof Serializable))
            return;
        System.out.print("Serialize              : ");

        for (int i = 0; i < size; i++) {
            s.put(Integer.valueOf(i), Integer.valueOf(1));
        }

        long startTime = System.nanoTime();

        FileOutputStream fs = new FileOutputStream("IntMapCheck.dat");
        ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(fs));
        out.writeObject(s);
        out.close();

        FileInputStream is = new FileInputStream("IntMapCheck.dat");
        ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(is));
        Map<Integer,Integer> m = (Map<Integer,Integer>)in.readObject();

        long endTime = System.nanoTime();
        long time = endTime - startTime;

        System.out.print(time + "ms");

        if (s instanceof IdentityHashMap) return;
        reallyAssert(s.equals(m));
    }

    static void test(Map<Integer,Integer> s, Integer[] key) {
        int size = key.length;

        t3("Put (absent)           ", size, s, key, size);
        reallyAssert(s.size() == size);
        t1("Get (present)          ", size, s, key, size, 8);
        t1Boxed("Get boxed (present)    ", size, s, key, size);
        ittest1(s, size);
        t3("Put (present)          ", size, s, key, 0);
        reallyAssert(s.size() == size);
        t7("ContainsKey            ", size, s, key, absent);
        t4("ContainsKey            ", size, s, key, size);
        ktest(s, size, key);
        t4("ContainsKey            ", absentSize, s, absent, 0);
        t6("Get                    ", size, s, key, absent);
        t1("Get (present)          ", size, s, key, size, 8);
        t1("Get (absent)           ", absentSize, s, absent, 0, 1);
        reallyAssert(s.size() == size);
        t2("Remove (absent)        ", absentSize, s, absent, 0);
        reallyAssert(s.size() == size);
        t5("Remove (present)       ", size, s, key, size / 2);
        reallyAssert(s.size() == size / 2);
        t1("Get                    ", size, s, key, size / 2, 8);
        ittest1(s, size / 2);
        t3("Put (half present)     ", size, s, key, size / 2);
        reallyAssert(s.size() == size);
        t1("Get (present)          ", size, s, key, size, 4);

        entest(s, size);
        t9(s);
        reallyAssert(s.size() == size);
        timer.start("Clear                  ", size);
        s.clear();
        timer.finish();
        t1("Get (absent)           ", size, s, key, 0, 1);
        t4("ContainsKey            ", size, s, key, 0);
        t2("Remove (absent)        ", size, s, key, 0);
        t3("Put (presized)         ", size, s, key, size);
        t1("Get (present)          ", size, s, key, size, 4);
        reallyAssert(s.size() == size);
        ittest(s, size);
        rtest(s, size);
        reallyAssert(s.size() == 0);
        timer.start("Clear                  ", size);
        s.clear();
        timer.finish();
        t3("Put (presized)         ", size, s, key, size);

        timer.start("Put (putAll)           ", size * 2);
        final Map<Integer,Integer> s2;
        try {
            s2 = (Map<Integer,Integer>)
                s.getClass().getConstructor().newInstance();
            s2.putAll(s);
        }
        catch (Exception e) { e.printStackTrace(); return; }
        timer.finish();

        timer.start("Iter Equals            ", size * 2);
        boolean eqt = s2.equals(s) && s.equals(s2);
        reallyAssert(eqt);
        timer.finish();

        timer.start("Iter HashCode          ", size * 2);
        int shc = s.hashCode();
        int s2hc = s2.hashCode();
        reallyAssert(shc == s2hc);
        timer.finish();

        timer.start("Put (present)          ", size * 2);
        s2.putAll(s);
        timer.finish();

        timer.start("Put (present)          ", size);
        int ipsum = 0;
        for (Iterator i0 = s.entrySet().iterator(); i0.hasNext(); ) {
            Map.Entry<Integer,Integer> me = (Map.Entry<Integer,Integer>)(i0.next());
            if (s2.put(me.getKey(), me.getValue()) != null)
                ++ipsum;
        }
        reallyAssert(ipsum == s.size());
        timer.finish();

        timer.start("Iter EntrySet contains ", size * 2);
        Set es2 = s2.entrySet();
        int sum = 0;
        for (Iterator i1 = s.entrySet().iterator(); i1.hasNext(); ) {
            Object entry = i1.next();
            if (es2.contains(entry)) ++sum;
        }
        timer.finish();
        reallyAssert(sum == size);

        Integer hold = s2.get(key[size-1]);
        s2.put(key[size-1], absent[0]);
        timer.start("Iter Equals            ", size * 2);
        eqt = s2.equals(s) && s.equals(s2);
        reallyAssert(!eqt);
        timer.finish();

        timer.start("Iter HashCode          ", size * 2);
        int s1h = s.hashCode();
        int s2h = s2.hashCode();
        reallyAssert(s1h != s2h);
        timer.finish();

        s2.put(key[size-1], hold);
        timer.start("Remove (present)       ", size * 2);
        Iterator s2i = s2.entrySet().iterator();
        Set es = s.entrySet();
        while (s2i.hasNext())
            reallyAssert(es.remove(s2i.next()));
        timer.finish();

        reallyAssert(s.isEmpty());

        timer.start("Clear                  ", size);
        s2.clear();
        timer.finish();
        reallyAssert(s2.isEmpty() && s.isEmpty());
    }

    static class TestTimer {
        private String name;
        private long numOps;
        private long startTime;
        private String cname;

        static final java.util.TreeMap accum = new java.util.TreeMap();

        static void printStats() {
            for (Iterator it = accum.entrySet().iterator(); it.hasNext(); ) {
                Map.Entry e = (Map.Entry)(it.next());
                Stats stats = ((Stats) (e.getValue()));
                long n = stats.number;
                double t;
                if (n > 0)
                    t = stats.sum / n;
                else
                    t = stats.least;
                long nano = Math.round(t);
                System.out.println(e.getKey() + ": " + nano);
            }
        }

        void start(String name, long numOps) {
            this.name = name;
            this.cname = classify();
            this.numOps = numOps;
            startTime = System.nanoTime();
        }

        String classify() {
            if (name.startsWith("Get"))
                return "Get                    ";
            else if (name.startsWith("Put"))
                return "Put                    ";
            else if (name.startsWith("Remove"))
                return "Remove                 ";
            else if (name.startsWith("Iter"))
                return "Iter                   ";
            else
                return null;
        }

        void finish() {
            long endTime = System.nanoTime();
            long time = endTime - startTime;
            double timePerOp = ((double) time)/numOps;

            Object st = accum.get(name);
            if (st == null)
                accum.put(name, new Stats(timePerOp));
            else {
                Stats stats = (Stats) st;
                stats.sum += timePerOp;
                stats.number++;
                if (timePerOp < stats.least) stats.least = timePerOp;
            }

            if (cname != null) {
                st = accum.get(cname);
                if (st == null)
                    accum.put(cname, new Stats(timePerOp));
                else {
                    Stats stats = (Stats) st;
                    stats.sum += timePerOp;
                    stats.number++;
                    if (timePerOp < stats.least) stats.least = timePerOp;
                }
            }

        }

    }

    static class Stats {
        double sum = 0;
        double least;
        long number = 0;
        Stats(double t) { least = t; }
    }

    static Random rng = new Random(3152688);

    static void shuffle(Integer[] keys) {
        int size = keys.length;
        for (int i = size; i > 1; i--) {
            int r = rng.nextInt(i);
            Integer t = keys[i-1];
            keys[i-1] = keys[r];
            keys[r] = t;
        }
    }

}
Revision:	1.15
Committed:	Sun Oct 23 03:03:23 2016 UTC (7 years, 5 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.14:	+4 -4 lines
Log Message:	fix deprecation warnings for Class#newInstance
#	Content
1	/*
2	* Written by Doug Lea with assistance from members of JCP JSR-166
3	* Expert Group and released to the public domain, as explained at
4	* http://creativecommons.org/publicdomain/zero/1.0/
5	*/
6	/**
7	* @test
8	* @synopsis Times and checks basic map operations
9	*/
10	import java.io.*;
11	import java.util.*;
12
13	public class IntMapCheck {
14	static int absentSize;
15	static int absentMask;
16	static Integer[] absent;
17	static final Integer MISSING = new Integer(Integer.MIN_VALUE);
18	static TestTimer timer = new TestTimer();
19
20	static void reallyAssert(boolean b) {
21	if (!b) throw new Error("Failed Assertion");
22	}
23
24	public static void main(String[] args) throws Exception {
25	Class<?> mapClass = java.util.concurrent.ConcurrentHashMap.class;
26	int numTests = 50;
27	int size = 75000;
28
29	if (args.length > 0) {
30	try {
31	mapClass = Class.forName(args[0]);
32	} catch (ClassNotFoundException e) {
33	throw new RuntimeException("Class " + args[0] + " not found.");
34	}
35	}
36
37	if (args.length > 1)
38	numTests = Integer.parseInt(args[1]);
39
40	if (args.length > 2)
41	size = Integer.parseInt(args[2]);
42
43	boolean doSerializeTest = args.length > 3;
44
45	System.out.println("Testing " + mapClass.getName() + " trials: " + numTests + " size: " + size);
46
47	absentSize = 4;
48	while (absentSize < size) absentSize <<= 1;
49	absentMask = absentSize-1;
50	absent = new Integer[absentSize];
51	for (int i = 0; i < absentSize/2; ++i)
52	absent[i] = Integer.valueOf(-i - 1);
53	for (int i = absentSize/2; i < absentSize; ++i)
54	absent[i] = Integer.valueOf(size + i + 1);
55
56	Integer[] key = new Integer[size];
57	for (int i = 0; i < size; ++i)
58	key[i] = Integer.valueOf(i);
59
60	for (int rep = 0; rep < numTests; ++rep) {
61	runTest(newMap(mapClass), key);
62	if ((rep & 3) == 3 && rep < numTests - 1) {
63	shuffle(key);
64	// Thread.sleep(50);
65	}
66	}
67
68	TestTimer.printStats();
69
70	if (doSerializeTest)
71	stest(newMap(mapClass), size);
72	}
73
74	static Map<Integer,Integer> newMap(Class<?> cl) {
75	try {
76	return (Map<Integer,Integer>) cl.getConstructor().newInstance();
77	} catch (Exception e) {
78	throw new RuntimeException("Can't instantiate " + cl + ": " + e);
79	}
80	}
81
82	static void runTest(Map<Integer,Integer> s, Integer[] key) {
83	int size = key.length;
84	long startTime = System.nanoTime();
85	test(s, key);
86	long time = System.nanoTime() - startTime;
87	}
88
89	static void t1(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect, int iters) {
90	int sum = 0;
91	timer.start(nm, n * iters);
92	for (int j = 0; j < iters; ++j) {
93	for (int i = 0; i < n; i++) {
94	if (s.get(key[i]) != null) ++sum;
95	}
96	}
97	timer.finish();
98	reallyAssert(sum == expect * iters);
99	}
100
101	static void t1Boxed(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
102	int sum = 0;
103	int iters = 8;
104	timer.start(nm, n * iters);
105	for (int j = 0; j < iters; ++j) {
106	for (int i = 0; i < n; i++) {
107	if (s.get(i) != i) ++sum;
108	}
109	}
110	timer.finish();
111	reallyAssert(sum == expect * iters);
112	}
113
114	static void t2(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
115	int sum = 0;
116	timer.start(nm, n);
117	for (int i = 0; i < n; i++) {
118	if (s.remove(key[i]) != null) ++sum;
119	}
120	timer.finish();
121	reallyAssert(sum == expect);
122	}
123
124	static void t3(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
125	int sum = 0;
126	timer.start(nm, n);
127	for (int i = 0; i < n; i++) {
128	Integer k = key[i];
129	Integer v = absent[i & absentMask];
130	if (s.put(k, v) == null) ++sum;
131	}
132	timer.finish();
133	reallyAssert(sum == expect);
134	}
135
136	static void t4(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
137	int sum = 0;
138	timer.start(nm, n);
139	for (int i = 0; i < n; i++) {
140	if (s.containsKey(key[i])) ++sum;
141	}
142	timer.finish();
143	reallyAssert(sum == expect);
144	}
145
146	static void t5(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
147	int sum = 0;
148	timer.start(nm, n/2);
149	for (int i = n-2; i >= 0; i-=2) {
150	if (s.remove(key[i]) != null) ++sum;
151	}
152	timer.finish();
153	reallyAssert(sum == expect);
154	}
155
156	static void t6(String nm, int n, Map<Integer,Integer> s, Integer[] k1, Integer[] k2) {
157	int sum = 0;
158	timer.start(nm, n * 2);
159	for (int i = 0; i < n; i++) {
160	if (s.get(k1[i]) != null) ++sum;
161	if (s.get(k2[i & absentMask]) != null) ++sum;
162	}
163	timer.finish();
164	reallyAssert(sum == n);
165	}
166
167	static void t7(String nm, int n, Map<Integer,Integer> s, Integer[] k1, Integer[] k2) {
168	int sum = 0;
169	timer.start(nm, n * 2);
170	for (int i = 0; i < n; i++) {
171	if (s.containsKey(k1[i])) ++sum;
172	if (s.containsKey(k2[i & absentMask])) ++sum;
173	}
174	timer.finish();
175	reallyAssert(sum == n);
176	}
177
178	static void t8(String nm, int n, Map<Integer,Integer> s, Integer[] key, int expect) {
179	int sum = 0;
180	timer.start(nm, n);
181	for (int i = 0; i < n; i++) {
182	if (s.get(key[i]) != null) ++sum;
183	}
184	timer.finish();
185	reallyAssert(sum == expect);
186	}
187
188	static void t9(Map<Integer,Integer> s) {
189	int sum = 0;
190	int iters = 20;
191	timer.start("ContainsValue (/n) ", iters * s.size());
192	int step = absentSize / iters;
193	for (int i = 0; i < absentSize; i += step)
194	if (s.containsValue(absent[i])) ++sum;
195	timer.finish();
196	reallyAssert(sum != 0);
197	}
198
199	static void ktest(Map<Integer,Integer> s, int size, Integer[] key) {
200	timer.start("ContainsKey ", size);
201	Set ks = s.keySet();
202	int sum = 0;
203	for (int i = 0; i < size; i++) {
204	if (ks.contains(key[i])) ++sum;
205	}
206	timer.finish();
207	reallyAssert(sum == size);
208	}
209
210	static void ittest1(Map<Integer,Integer> s, int size) {
211	int sum = 0;
212	timer.start("Iter Key ", size);
213	for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
214	if (it.next() != MISSING)
215	++sum;
216	}
217	timer.finish();
218	// if (sum != size)
219	// System.out.println("iters " + sum + " size " + size);
220	reallyAssert(sum == size);
221	}
222
223	static void ittest2(Map<Integer,Integer> s, int size) {
224	int sum = 0;
225	timer.start("Iter Value ", size);
226	for (Iterator it = s.values().iterator(); it.hasNext(); ) {
227	if (it.next() != MISSING)
228	++sum;
229	}
230	timer.finish();
231	// if (sum != size)
232	// System.out.println("iters " + sum + " size " + size);
233	reallyAssert(sum == size);
234	}
235	static void ittest3(Map<Integer,Integer> s, int size) {
236	int sum = 0;
237	timer.start("Iter Entry ", size);
238	for (Iterator it = s.entrySet().iterator(); it.hasNext(); ) {
239	if (it.next() != MISSING)
240	++sum;
241	}
242	timer.finish();
243	reallyAssert(sum == size);
244	}
245
246	static void ittest4(Map<Integer,Integer> s, int size, int pos) {
247	IdentityHashMap seen = new IdentityHashMap(size);
248	reallyAssert(s.size() == size);
249	int sum = 0;
250	timer.start("Iter XEntry ", size);
251	Iterator it = s.entrySet().iterator();
252	Integer k = null;
253	Integer v = null;
254	for (int i = 0; i < size-pos; ++i) {
255	Map.Entry<Integer,Integer> x = (Map.Entry<Integer,Integer>)(it.next());
256	k = x.getKey();
257	v = x.getValue();
258	seen.put(k, k);
259	if (v != MISSING)
260	++sum;
261	}
262	reallyAssert(s.containsKey(k));
263	it.remove();
264	reallyAssert(!s.containsKey(k));
265	while (it.hasNext()) {
266	Map.Entry<Integer,Integer> x = (Map.Entry<Integer,Integer>)(it.next());
267	Integer k2 = x.getKey();
268	seen.put(k2, k2);
269	if (k2 != MISSING)
270	++sum;
271	}
272
273	reallyAssert(s.size() == size-1);
274	s.put(k, v);
275	reallyAssert(seen.size() == size);
276	timer.finish();
277	reallyAssert(sum == size);
278	reallyAssert(s.size() == size);
279	}
280
281	static void ittest(Map<Integer,Integer> s, int size) {
282	for (int i = 0; i < 4; ++i) {
283	ittest1(s, size);
284	ittest2(s, size);
285	ittest3(s, size);
286	}
287	// for (int i = 0; i < size-1; ++i)
288	// ittest4(s, size, i);
289	}
290
291	static void entest1(Hashtable ht, int size) {
292	int sum = 0;
293
294	timer.start("Iter Enumeration Key ", size);
295	for (Enumeration en = ht.keys(); en.hasMoreElements(); ) {
296	if (en.nextElement() != MISSING)
297	++sum;
298	}
299	timer.finish();
300	reallyAssert(sum == size);
301	}
302
303	static void entest2(Hashtable ht, int size) {
304	int sum = 0;
305	timer.start("Iter Enumeration Value ", size);
306	for (Enumeration en = ht.elements(); en.hasMoreElements(); ) {
307	if (en.nextElement() != MISSING)
308	++sum;
309	}
310	timer.finish();
311	reallyAssert(sum == size);
312	}
313
314	static void entest3(Hashtable ht, int size) {
315	int sum = 0;
316
317	timer.start("Iterf Enumeration Key ", size);
318	Enumeration en = ht.keys();
319	for (int i = 0; i < size; ++i) {
320	if (en.nextElement() != MISSING)
321	++sum;
322	}
323	timer.finish();
324	reallyAssert(sum == size);
325	}
326
327	static void entest4(Hashtable ht, int size) {
328	int sum = 0;
329	timer.start("Iterf Enumeration Value", size);
330	Enumeration en = ht.elements();
331	for (int i = 0; i < size; ++i) {
332	if (en.nextElement() != MISSING)
333	++sum;
334	}
335	timer.finish();
336	reallyAssert(sum == size);
337	}
338
339	static void entest(Map<Integer,Integer> s, int size) {
340	if (s instanceof Hashtable) {
341	Hashtable ht = (Hashtable) s;
342	// entest3(ht, size);
343	// entest4(ht, size);
344	entest1(ht, size);
345	entest2(ht, size);
346	entest1(ht, size);
347	entest2(ht, size);
348	entest1(ht, size);
349	entest2(ht, size);
350	}
351	}
352
353	static void rtest(Map<Integer,Integer> s, int size) {
354	timer.start("Remove (iterator) ", size);
355	for (Iterator it = s.keySet().iterator(); it.hasNext(); ) {
356	it.next();
357	it.remove();
358	}
359	reallyAssert(s.isEmpty());
360	timer.finish();
361	}
362
363	static void stest(Map<Integer,Integer> s, int size) throws Exception {
364	if (!(s instanceof Serializable))
365	return;
366	System.out.print("Serialize : ");
367
368	for (int i = 0; i < size; i++) {
369	s.put(Integer.valueOf(i), Integer.valueOf(1));
370	}
371
372	long startTime = System.nanoTime();
373
374	FileOutputStream fs = new FileOutputStream("IntMapCheck.dat");
375	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(fs));
376	out.writeObject(s);
377	out.close();
378
379	FileInputStream is = new FileInputStream("IntMapCheck.dat");
380	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(is));
381	Map<Integer,Integer> m = (Map<Integer,Integer>)in.readObject();
382
383	long endTime = System.nanoTime();
384	long time = endTime - startTime;
385
386	System.out.print(time + "ms");
387
388	if (s instanceof IdentityHashMap) return;
389	reallyAssert(s.equals(m));
390	}
391
392	static void test(Map<Integer,Integer> s, Integer[] key) {
393	int size = key.length;
394
395	t3("Put (absent) ", size, s, key, size);
396	reallyAssert(s.size() == size);
397	t1("Get (present) ", size, s, key, size, 8);
398	t1Boxed("Get boxed (present) ", size, s, key, size);
399	ittest1(s, size);
400	t3("Put (present) ", size, s, key, 0);
401	reallyAssert(s.size() == size);
402	t7("ContainsKey ", size, s, key, absent);
403	t4("ContainsKey ", size, s, key, size);
404	ktest(s, size, key);
405	t4("ContainsKey ", absentSize, s, absent, 0);
406	t6("Get ", size, s, key, absent);
407	t1("Get (present) ", size, s, key, size, 8);
408	t1("Get (absent) ", absentSize, s, absent, 0, 1);
409	reallyAssert(s.size() == size);
410	t2("Remove (absent) ", absentSize, s, absent, 0);
411	reallyAssert(s.size() == size);
412	t5("Remove (present) ", size, s, key, size / 2);
413	reallyAssert(s.size() == size / 2);
414	t1("Get ", size, s, key, size / 2, 8);
415	ittest1(s, size / 2);
416	t3("Put (half present) ", size, s, key, size / 2);
417	reallyAssert(s.size() == size);
418	t1("Get (present) ", size, s, key, size, 4);
419
420	entest(s, size);
421	t9(s);
422	reallyAssert(s.size() == size);
423	timer.start("Clear ", size);
424	s.clear();
425	timer.finish();
426	t1("Get (absent) ", size, s, key, 0, 1);
427	t4("ContainsKey ", size, s, key, 0);
428	t2("Remove (absent) ", size, s, key, 0);
429	t3("Put (presized) ", size, s, key, size);
430	t1("Get (present) ", size, s, key, size, 4);
431	reallyAssert(s.size() == size);
432	ittest(s, size);
433	rtest(s, size);
434	reallyAssert(s.size() == 0);
435	timer.start("Clear ", size);
436	s.clear();
437	timer.finish();
438	t3("Put (presized) ", size, s, key, size);
439
440	timer.start("Put (putAll) ", size * 2);
441	final Map<Integer,Integer> s2;
442	try {
443	s2 = (Map<Integer,Integer>)
444	s.getClass().getConstructor().newInstance();
445	s2.putAll(s);
446	}
447	catch (Exception e) { e.printStackTrace(); return; }
448	timer.finish();
449
450	timer.start("Iter Equals ", size * 2);
451	boolean eqt = s2.equals(s) && s.equals(s2);
452	reallyAssert(eqt);
453	timer.finish();
454
455	timer.start("Iter HashCode ", size * 2);
456	int shc = s.hashCode();
457	int s2hc = s2.hashCode();
458	reallyAssert(shc == s2hc);
459	timer.finish();
460
461	timer.start("Put (present) ", size * 2);
462	s2.putAll(s);
463	timer.finish();
464
465	timer.start("Put (present) ", size);
466	int ipsum = 0;
467	for (Iterator i0 = s.entrySet().iterator(); i0.hasNext(); ) {
468	Map.Entry<Integer,Integer> me = (Map.Entry<Integer,Integer>)(i0.next());
469	if (s2.put(me.getKey(), me.getValue()) != null)
470	++ipsum;
471	}
472	reallyAssert(ipsum == s.size());
473	timer.finish();
474
475	timer.start("Iter EntrySet contains ", size * 2);
476	Set es2 = s2.entrySet();
477	int sum = 0;
478	for (Iterator i1 = s.entrySet().iterator(); i1.hasNext(); ) {
479	Object entry = i1.next();
480	if (es2.contains(entry)) ++sum;
481	}
482	timer.finish();
483	reallyAssert(sum == size);
484
485	Integer hold = s2.get(key[size-1]);
486	s2.put(key[size-1], absent[0]);
487	timer.start("Iter Equals ", size * 2);
488	eqt = s2.equals(s) && s.equals(s2);
489	reallyAssert(!eqt);
490	timer.finish();
491
492	timer.start("Iter HashCode ", size * 2);
493	int s1h = s.hashCode();
494	int s2h = s2.hashCode();
495	reallyAssert(s1h != s2h);
496	timer.finish();
497
498	s2.put(key[size-1], hold);
499	timer.start("Remove (present) ", size * 2);
500	Iterator s2i = s2.entrySet().iterator();
501	Set es = s.entrySet();
502	while (s2i.hasNext())
503	reallyAssert(es.remove(s2i.next()));
504	timer.finish();
505
506	reallyAssert(s.isEmpty());
507
508	timer.start("Clear ", size);
509	s2.clear();
510	timer.finish();
511	reallyAssert(s2.isEmpty() && s.isEmpty());
512	}
513
514	static class TestTimer {
515	private String name;
516	private long numOps;
517	private long startTime;
518	private String cname;
519
520	static final java.util.TreeMap accum = new java.util.TreeMap();
521
522	static void printStats() {
523	for (Iterator it = accum.entrySet().iterator(); it.hasNext(); ) {
524	Map.Entry e = (Map.Entry)(it.next());
525	Stats stats = ((Stats) (e.getValue()));
526	long n = stats.number;
527	double t;
528	if (n > 0)
529	t = stats.sum / n;
530	else
531	t = stats.least;
532	long nano = Math.round(t);
533	System.out.println(e.getKey() + ": " + nano);
534	}
535	}
536
537	void start(String name, long numOps) {
538	this.name = name;
539	this.cname = classify();
540	this.numOps = numOps;
541	startTime = System.nanoTime();
542	}
543
544	String classify() {
545	if (name.startsWith("Get"))
546	return "Get ";
547	else if (name.startsWith("Put"))
548	return "Put ";
549	else if (name.startsWith("Remove"))
550	return "Remove ";
551	else if (name.startsWith("Iter"))
552	return "Iter ";
553	else
554	return null;
555	}
556
557	void finish() {
558	long endTime = System.nanoTime();
559	long time = endTime - startTime;
560	double timePerOp = ((double) time)/numOps;
561
562	Object st = accum.get(name);
563	if (st == null)
564	accum.put(name, new Stats(timePerOp));
565	else {
566	Stats stats = (Stats) st;
567	stats.sum += timePerOp;
568	stats.number++;
569	if (timePerOp < stats.least) stats.least = timePerOp;
570	}
571
572	if (cname != null) {
573	st = accum.get(cname);
574	if (st == null)
575	accum.put(cname, new Stats(timePerOp));
576	else {
577	Stats stats = (Stats) st;
578	stats.sum += timePerOp;
579	stats.number++;
580	if (timePerOp < stats.least) stats.least = timePerOp;
581	}
582	}
583
584	}
585
586	}
587
588	static class Stats {
589	double sum = 0;
590	double least;
591	long number = 0;
592	Stats(double t) { least = t; }
593	}
594
595	static Random rng = new Random(3152688);
596
597	static void shuffle(Integer[] keys) {
598	int size = keys.length;
599	for (int i = size; i > 1; i--) {
600	int r = rng.nextInt(i);
601	Integer t = keys[i-1];
602	keys[i-1] = keys[r];
603	keys[r] = t;
604	}
605	}
606
607	}