private void CheckSumBuf(RedFS_Inode wip, Red_Buffer wb)
{
lock (fpcache_buf)
{
if (fpcache_cnt == 1024)
{
fpcache_cnt = 0;
clogfile.Write(fpcache_buf, 0, fpcache_buf.Length);
clogfile.Flush();
}
if (wb.get_level() == 0 && wip.get_wiptype() == WIP_TYPE.REGULAR_FILE)
{
fingerprintCLOG fpt = (fingerprintCLOG)fptemp;
fpt.fsid = wip.get_filefsid();
fpt.inode = wip.get_ino();
fpt.fbn = (int)wb.get_start_fbn();
fpt.dbn = wb.get_ondisk_dbn();
fpt.cnt = (int)clogfile.Position;
byte[] hash = md5.ComputeHash(wb.buf_to_data());
for (int i = 0; i < 16; i++)
{
fpt.fp[i] = hash[i];
}
fptemp.get_bytes(fpcache_buf, fpcache_cnt * fptemp.get_size());
fpcache_cnt++;
}
}
}
public static void dumplistcontents(List <Red_Buffer> list)
{
DEFS.DEBUGCLR("DIMP", "Dumping list contents");
for (int idx = 0; idx < list.Count; idx++)
{
Red_Buffer wb = (Red_Buffer)list.ElementAt(idx);
DEFS.DEBUG("DUMPLIST", "-> (" + wb.get_level() + ")" + wb.get_ondisk_dbn() + " l=" +
wb.get_start_fbn() + " isdirty = " + ((RedBufL0)wb).is_dirty);
}
}
/*
* public static Red_Buffer get_buf2(string who, RedFS_Inode wip, int level, int some_fbn, bool isquery)
* {
* DEFS.DEBUG("getbuf", "-> " + who + "," + wip.m_ino + "," + level + "," + some_fbn + "," + isquery);
* Red_Buffer retbuf = wip.FindOrInsertOrRemoveBuf(FIR_OPTYPE.FIND, level, some_fbn, null, null);
* if (!isquery)
* {
* DEFS.ASSERT(retbuf != null, "newer get_buf2 has failed");
* }
* return retbuf;
* }
*/
/*
* This can never return null, the caller *must* know that this buffer
* is incore before calling. Must be called with a lock held on wip. But in case
* is query is set true, then the caller is not sure if the buf is incore, in that
* case we can return null safely.
*/
public static Red_Buffer get_buf3(string who, RedFS_Inode wip, int level, int some_fbn, bool isquery)
{
List <Red_Buffer> list = null;
switch (level)
{
case 0:
list = wip.L0list;
break;
case 1:
list = wip.L1list;
break;
case 2:
list = wip.L2list;
break;
}
DEFS.ASSERT(list != null, "List cannot be null in get_buf()");
int start_fbn = SomeFBNToStartFBN(level, some_fbn);
//some optimization, 10-12 mbps more.
if (level == 1)
{
if (wip._lasthitbuf != null && wip._lasthitbuf.get_start_fbn() == start_fbn)
{
return(wip._lasthitbuf);
}
}
for (int idx = 0; idx < (list.Count); idx++)
//for (int idx = (list.Count - 1); idx >= 0; idx--)
{
int idx2 = (level == 0) ? (list.Count - idx - 1) : idx;
Red_Buffer wb = (Red_Buffer)list.ElementAt(idx2);
if (wb.get_start_fbn() == start_fbn)
{
//if (wb.get_level() > 0 && list.Count > 2) //like splay tree.
//{
// list.RemoveAt(idx2);
// list.Insert(0, wb);
//}
if (level == 1)
{
wip._lasthitbuf = wb; //good opti - gives 10-12mbps more.
}
return(wb);
}
}
DEFS.ASSERT(isquery, "who = " + who + ", get_buf() failed " + wip.get_ino() + "," + level + "," + some_fbn);
return(null);
}