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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2009 Oracle. All rights reserved.
*
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading;
using System.Xml;
using NUnit.Framework;
using BerkeleyDB;
namespace CsharpAPITest
{
[TestFixture]
public class MutexTest
{
private string testFixtureHome;
private string testFixtureName;
private string testName;
private string testHome;
private BTreeDatabase TestDB;
private BerkeleyDB.Mutex TestMutex;
[TestFixtureSetUp]
public void RunBeforeTests()
{
testFixtureName = "MutexTest";
testFixtureHome = "./TestOut/" + testFixtureName;
Configuration.ClearDir(testFixtureHome);
}
[Test]
public void TestGetAndFreeMutex()
{
testName = "TestGetAndFreeMutex";
testHome = testFixtureHome + "/" + testName;
Configuration.ClearDir(testHome);
DatabaseEnvironmentConfig envConfig =
new DatabaseEnvironmentConfig();
envConfig.Create = true;
envConfig.UseMPool = true;
DatabaseEnvironment env = DatabaseEnvironment.Open(
testHome, envConfig);
BerkeleyDB.Mutex mutex = env.GetMutex(true, true);
mutex.Dispose();
env.Close();
}
[Test]
public void TestLockAndUnlockMutex()
{
testName = "TestLockAndUnlockMutex";
testHome = testFixtureHome + "/" + testName;
Configuration.ClearDir(testHome);
/*
* Open an environment without locking and
* deadlock detection.
*/
DatabaseEnvironmentConfig envConfig =
new DatabaseEnvironmentConfig();
envConfig.FreeThreaded = true;
envConfig.UseLogging = true;
envConfig.Create = true;
envConfig.UseMPool = true;
DatabaseEnvironment env = DatabaseEnvironment.Open(
testHome, envConfig);
// Open a database.
BTreeDatabaseConfig dbConfig =
new BTreeDatabaseConfig();
dbConfig.Creation = CreatePolicy.IF_NEEDED;
dbConfig.Env = env;
TestDB = BTreeDatabase.Open(
testName + ".db", dbConfig);
// Get a mutex which will be used in two threads.
TestMutex = env.GetMutex(true, false);
// Begin two threads to write records into database.
Thread mutexThread1 = new Thread(
new ThreadStart(MutexThread1));
Thread mutexThread2 = new Thread(
new ThreadStart(MutexThread2));
mutexThread1.Start();
mutexThread2.Start();
mutexThread1.Join();
mutexThread2.Join();
// Free the mutex.
TestMutex.Dispose();
// Close all.
TestDB.Close();
env.Close();
}
public void MutexThread1()
{
TestMutex.Lock();
for (int i = 0; i < 100; i++)
TestDB.Put(new DatabaseEntry(
BitConverter.GetBytes(i)),
new DatabaseEntry(new byte[102400]));
TestMutex.Unlock();
}
public void MutexThread2()
{
TestMutex.Lock();
for (int i = 0; i < 100; i++)
TestDB.Put(new DatabaseEntry(
BitConverter.GetBytes(i)),
new DatabaseEntry(new byte[102400]));
TestMutex.Unlock();
}
}
}
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