# Count the number of buffers in the buffer cache for which
# bp->b_flags & $bufcount_match is non-0.
#
# @(#)bdump 8.1 (Berkeley) 6/10/93
set $bufcount_match=0x020000
define bufcount
set $i = 0
set $num = 0
while ($i < 512)
set $bp = bufhash[$i].b_forw
while ($bp != bufhash[$i].b_back)
if ($bp->b_flags & $bufcount_match)
set $num++
end
set $bp = $bp->b_forw
end
# printf "bucket: %d cumulative %d\n", $i, $num
set $i++
end
printf "Number of buffers with flags & %x in hash table: %d\n", $bufcount_match, $num
end
# Dump the entire buffer cache.
define bufdump
set $i = 0
set $num = 0
while ($i < 512)
set $bp = bufhash[$i].b_forw
while ($bp != bufhash[$i].b_back)
printf "bp=0x%x flags=0x%x vp=0x%x lblkno=0x%x blkno=0x%x\n", $bp, $bp->b_flags, $bp->b_vp, $bp->b_lblkno, $bp->b_blkno
set $num++
set $bp = $bp->b_forw
end
set $i++
end
printf "Number of buffers in hash table: %d\n", $num
end
# Dump the buffers in a particular hashbucket.
# usage: dumpbucket bucketnumber
define dumpbucket
set $num = 0
set $bp = bufhash[$arg0].b_forw
while ($bp != bufhash[$arg0].b_back)
printf "bp=0x%x flags=0x%x vp=0x%x lblkno=0x%x blkno=0x%x\n", $bp, $bp->b_flags, $bp->b_vp, $bp->b_lblkno, $bp->b_blkno
set $num++
set $bp = $bp->b_forw
end
printf "Number of buffers in bucket %d: %d\n", $arg0, $num
end
# Dump the buffers on the empty and age queues
define bdumpnew
set $i = 0
set $num = 0
while ($i < 4)
printf "Queue %d\n", $i
set $bp = (struct buf *)bufqueues[$i].qe_next
while ($bp)
printf "bp=0x%x flags=0x%x vp=0x%x lbn=%d size=0x%x\n", $bp, $bp->b_flags, $bp->b_vp, $bp->b_lblkno, $bp->b_bufsize
set $num++
set $bp = (struct buf *)$bp->b_freelist.qe_next
end
set $i++
end
printf "Number of buffers in free lists: %d\n", $num
end
define dumpchain
set $bp = (struct buf *)$arg0
while ($bp)
printf "bp=0x%x flags=0x%x bn=0x%x lbn=%d count=%d size=%d\n", $bp, $bp->b_flags, $bp->b_blkno, $bp->b_lblkno, $bp->b_bcount, $bp->b_bufsize
set $bp = (struct buf *)$bp->b_vnbufs.qe_next
end
end
define dumpq
set $num = 0
printf "Queue %d\n", $arg0
set $bp = (struct buf *)bufqueues[$arg0].qe_next
while ($bp)
printf "bp=0x%x flags=0x%x vp=0x%x lbn=%d size=0x%x\n", $bp, $bp->b_flags, $bp->b_vp, $bp->b_lblkno, $bp->b_bufsize
set $num++
set $bp = (struct buf *)$bp->b_freelist.qe_next
end
printf "Number of buffers on queue %d: %d\n", $arg0, $num
end
