public void CrashTestBeforeMerge()
{
string path = Path.GetFullPath ("TestData\\CrashTestBeforeMerge");
using (var db = new KeyValueStore(path)) db.Truncate ();
var doneSetting = new EventWaitHandle (false, EventResetMode.ManualReset, "CrashTestBeforeMerge");
doneSetting.Reset ();
string testPath = Path.Combine (Path.GetDirectoryName (Assembly.GetExecutingAssembly ().GetName ().CodeBase), "RazorTest.exe");
var process = Process.Start (testPath, "CrashTestBeforeMerge");
doneSetting.WaitOne (30000);
if (!process.HasExited) {
process.Kill ();
process.WaitForExit ();
}
// Open the database created by the other program
using (var db = new KeyValueStore(path)) {
db.Manifest.Logger = (msg) => Console.WriteLine (msg);
Console.WriteLine ("Begin enumeration.");
ByteArray lastKey = new ByteArray ();
int ct = 0;
foreach (var pair in db.Enumerate()) {
ByteArray k = new ByteArray (pair.Key);
Assert.True (lastKey.CompareTo (k) < 0);
lastKey = k;
ct++;
}
Assert.AreEqual (10000, ct);
Console.WriteLine ("Found {0} items in the crashed database.", ct);
}
}
public void Comparison()
{
var a0 = new ByteArray (new byte[] { 0 });
var a2 = new ByteArray (new byte[] { 0, 1, 2, 4 });
var a2B = new ByteArray (new byte[] { 0, 1, 2, 4 });
var a3 = new ByteArray (new byte[] { 0, 1, 2, 5 });
var a4 = new ByteArray (new byte[] { 0, 1, 2, 5, 6 });
// Simple direct comparisons
Assert.IsTrue (a2.CompareTo (a3) < 0);
Assert.IsTrue (a3.CompareTo (a2) > 0);
Assert.IsTrue (a2.CompareTo (a2B) == 0);
// Length comparisons
Assert.IsTrue (a4.CompareTo (a0) > 0);
Assert.IsTrue (a3.CompareTo (a4) < 0);
}
public void TestComparisonSpeed()
{
var a = new ByteArray (new byte[] { 0 });
var b = new ByteArray (new byte[] { 1 });
Stopwatch timer = new Stopwatch ();
timer.Start ();
for (int i = 0; i < 1000000; i++) Assert.True (a.CompareTo (b) < 0);
timer.Stop ();
Console.WriteLine ("Elapsed Time (1 byte): {0} ms", timer.ElapsedMilliseconds);
a = new ByteArray (new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 });
b = new ByteArray (new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20 });
timer = new Stopwatch ();
timer.Start ();
for (int i = 0; i < 1000000; i++) Assert.True (a.CompareTo (b) < 0);
timer.Stop ();
Console.WriteLine ("Elapsed Time (20 byte): {0} ms", timer.ElapsedMilliseconds);
}
public void BulkSetBulkEnumerateWhileMerging()
{
string path = Path.GetFullPath("TestData\\BulkSetBulkEnumerateWhileMerging");
var timer = new Stopwatch();
int totalSize = 0;
int readSize = 0;
int num_items = 100000;
using (var db = new KeyValueStore(path)) {
db.Truncate();
db.Manifest.Logger = (msg) => Console.WriteLine(msg);
timer.Start();
for (int i = 0; i < num_items; i++) {
var randomKey = ByteArray.Random(40);
var randomValue = ByteArray.Random(256);
db.Set(randomKey.InternalBytes, randomValue.InternalBytes);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
timer.Reset();
Console.WriteLine("Begin enumeration.");
timer.Start();
ByteArray lastKey = new ByteArray();
int ct = 0;
foreach (var pair in db.Enumerate()) {
try {
ByteArray k = new ByteArray(pair.Key);
Assert.True(lastKey.CompareTo(k) < 0);
lastKey = k;
ct++;
} catch (Exception e) {
Console.WriteLine("Key: {0}\n{1}",pair.Key,e);
Debugger.Launch();
throw;
}
}
timer.Stop();
Assert.AreEqual(num_items, ct, num_items.ToString() + " items should be enumerated.");
Console.WriteLine("Enumerated read throughput of {0} MB/s", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
}
}