/*
* For a given rbn, it will load the 4k page into memory and return.
* Also updates the queue to indicate the same.
*/
private void load_wrbufx(int rbn)
{
if (GLOBALQ.WRObj[rbn].incoretbuf != null)
{
cachehits++;
}
else
{
WRBuf tbuf = allocate(rbn);
mfile1.Seek((long)rbn * 4096, SeekOrigin.Begin);
mfile1.Read(tmpiodata, 0, 4096);
CONFIG.Decrypt_Read_WRBuf(tmpiodata, tbuf.data);
GLOBALQ.WRObj[rbn].incoretbuf = tbuf;
refcache[cachesize++] = tbuf;
}
DoSnapshotWork(rbn);
/* After the load, see if we have to clean up */
if (cachesize > 15 * 1024)
{
internal_sync_and_flush_cache_advanced();
}
}
private void deallocate(WRBuf wb)
{
lock (iStack)
{
iStackTop++;
iStack[iStackTop] = wb;
}
}
private WRBuf allocate(int r)
{
lock (iStack)
{
WRBuf wb = iStack[iStackTop];
iStackTop--;
wb.reinit(r);
return(wb);
}
}
int IComparer.Compare(object obj1, object obj2)
{
WRBuf w1 = (WRBuf)obj1;
WRBuf w2 = (WRBuf)obj2;
if (w1.get_buf_age() > w2.get_buf_age())
{
return(-1);
}
else if (w1.get_buf_age() > w2.get_buf_age())
{
return(1);
}
return(0);
}
public WRLoader()
{
m_creation_time = DateTime.Now.ToUniversalTime().Ticks;
for (int i = 0; i < iStack.Length; i++)
{
iStack[i] = new WRBuf(0);
}
iStackTop = iStack.Length - 1;
for (int i = 0; i < GLOBALQ.WRObj.Length; i++)
{
GLOBALQ.WRObj[i] = new WRContainer();
}
mfile1 = new FileStream(CONFIG.GetRefCntFilePath(), FileMode.OpenOrCreate, FileAccess.ReadWrite);
tfile0 = new FileStream(CONFIG.GetTFilePath(), FileMode.OpenOrCreate, FileAccess.ReadWrite);
dfile1 = new FileStream(CONFIG.GetDLogFilePath(), FileMode.OpenOrCreate, FileAccess.ReadWrite);
}
