@@start = @@stack = @@map = nil
PROFILE_PROC = proc{|event, file, line, id, binding, klass|
when "return", "c-return"
data = (@@map[key] ||= [0, 0.0, 0.0, key])
data[2] += cost - tick[1]
@@stack[-1][1] += cost if @@stack[-1]
@@start = Process.times[0]
set_trace_func PROFILE_PROC
total = Process.times[0] - @@start
if total == 0 then total = 0.01 end
data.sort!{|a,b| b[2] <=> a[2]}
f.printf " %% cumulative self self total\n"
f.printf " time seconds seconds calls ms/call ms/call name\n"
f.printf "%6.2f %8.2f %8.2f %8d ", d[2]/total*100, sum, d[2], d[0]
f.printf "%8.2f %8.2f %s\n", d[2]*1000/d[0], d[1]*1000/d[0], get_name(*d[3])
f.printf "%6.2f %8.2f %8.2f %8d ", 0.0, total, 0.0, 1 # ???
f.printf "%8.2f %8.2f %s\n", 0.0, total*1000, "#toplevel" # ???