public void decrement_refcount(int fsid, Red_Buffer wb, bool isinodefilel0)
{
if (wb.get_level() == 0 && isinodefilel0)
{
m_wrloader.mod_refcount(fsid, wb.get_ondisk_dbn(), REFCNT_OP.DECREMENT_REFCOUNT, wb, isinodefilel0);
}
else
{
m_wrloader.mod_refcount(fsid, wb.get_ondisk_dbn(), REFCNT_OP.DECREMENT_REFCOUNT, null, false);
}
}
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 bool read(Red_Buffer wb)
{
if (!initialized)
{
return(false);
}
//Array.Clear(wb.buf_to_data(), 0, 4096);
OPS.BZERO(wb.buf_to_data());
total_disk_reads++;
if (wb.get_ondisk_dbn() == 0)
{
return(true);
}
lock (dfile)
{
//DEFS.DEBUG("RAID", "Reading dbn : " + wb.get_ondisk_dbn() + " level : " + wb.get_level());
dfile.Seek((long)wb.get_ondisk_dbn() * 4096, SeekOrigin.Begin);
dfile.Read(wb.buf_to_data(), 0, 4096);
}
return(true);
}
/*
* Below three functions are exposed for public.
* MP Safe function, can take long if there
* are too many updates to be made.
*/
public void touch_refcount(Red_Buffer wb, bool isinodefilel0)
{
DEFS.ASSERT(wb != null, "touch refcount needs the wb");
if (wb.get_touchrefcnt_needed() == false)// || wb.get_ondisk_dbn() == 0)
{
return;
}
else
{
//DEFS.DEBUG("-REF-", "CTH refcount for dbn = " + wb.get_ondisk_dbn() + " inofile = " + isinodefilel0);
wb.set_touchrefcnt_needed(false);
}
if (wb.get_level() == 0 && isinodefilel0)
{
m_wrloader.mod_refcount(0, wb.get_ondisk_dbn(), REFCNT_OP.TOUCH_REFCOUNT, wb, true);
}
else
{
DEFS.ASSERT(wb.get_level() > 0, "touch_refcount is only for indirects only, except for ino-L0!");
m_wrloader.mod_refcount(0, wb.get_ondisk_dbn(), REFCNT_OP.TOUCH_REFCOUNT, wb, false);
}
}
public bool write(RedFS_Inode wip, Red_Buffer wb)
{
if (!initialized)
{
return(false);
}
total_disk_writes++;
lock (dfile)
{
//DEFS.DEBUG("RAID", "Writing dbn : " + wb.get_ondisk_dbn() + " level : " + wb.get_level());
dfile.Seek((long)wb.get_ondisk_dbn() * 4096, SeekOrigin.Begin);
dfile.Write(wb.buf_to_data(), 0, 4096);
dfile.Flush();
wb.set_dirty(false);
CheckSumBuf(wip, wb);
}
return(true);
}
public void increment_refcount(int fsid, Red_Buffer wb, bool isinodefilel0)
{
m_wrloader.mod_refcount(fsid, wb.get_ondisk_dbn(), REFCNT_OP.INCREMENT_REFCOUNT, wb, isinodefilel0);
}