/*
* Get the length of the whole database.
*/
public long Length()
{
try
{
return(BitConverter.ToInt64(hashDatabase.Get(new DatabaseEntry(BitConverter.GetBytes(0L))).Value.Data));
}
catch (NotFoundException)
{
hashDatabase.Put(
new DatabaseEntry(BitConverter.GetBytes(0L)),
new DatabaseEntry(BitConverter.GetBytes(0L))
);
hashDatabase.Sync();
return(0);
}
}
public void TestCompactWithoutTxn()
{
int i, nRecs;
nRecs = 10000;
testName = "TestCompactWithoutTxn";
SetUpTest(true);
string hashDBFileName = testHome + "/" + testName + ".db";
HashDatabaseConfig hashDBConfig = new HashDatabaseConfig();
hashDBConfig.Creation = CreatePolicy.ALWAYS;
// The minimum page size
hashDBConfig.PageSize = 512;
hashDBConfig.HashComparison =
new EntryComparisonDelegate(dbIntCompare);
using (HashDatabase hashDB = HashDatabase.Open(
hashDBFileName, hashDBConfig)) {
DatabaseEntry key;
DatabaseEntry data;
// Fill the database with entries from 0 to 9999
for (i = 0; i < nRecs; i++)
{
key = new DatabaseEntry(BitConverter.GetBytes(i));
data = new DatabaseEntry(BitConverter.GetBytes(i));
hashDB.Put(key, data);
}
/*
* Delete entries below 500, between 3000 and
* 5000 and above 7000
*/
for (i = 0; i < nRecs; i++)
{
if (i < 500 || i > 7000 || (i < 5000 && i > 3000))
{
key = new DatabaseEntry(BitConverter.GetBytes(i));
hashDB.Delete(key);
}
}
hashDB.Sync();
long fileSize = new FileInfo(hashDBFileName).Length;
// Compact database
CompactConfig cCfg = new CompactConfig();
cCfg.FillPercentage = 30;
cCfg.Pages = 10;
cCfg.Timeout = 1000;
cCfg.TruncatePages = true;
cCfg.start = new DatabaseEntry(BitConverter.GetBytes(1));
cCfg.stop = new DatabaseEntry(BitConverter.GetBytes(7000));
CompactData compactData = hashDB.Compact(cCfg);
Assert.IsFalse((compactData.Deadlocks == 0) &&
(compactData.Levels == 0) &&
(compactData.PagesExamined == 0) &&
(compactData.PagesFreed == 0) &&
(compactData.PagesTruncated == 0));
hashDB.Sync();
long compactedFileSize = new FileInfo(hashDBFileName).Length;
Assert.Less(compactedFileSize, fileSize);
}
}
/*
* Syncronizes the database with the data from RAM to HDD.
*/
public void SyncToDisk()
{
hashDatabase.Sync();
urlDatabase.Sync();
}
public void Sync()
{
logger.LogInformation("I'm syncing!");
db.Sync();
}