tools/trace/bridgetime.lua

   1 #!/usr/local/bin/luatrace -s
   2
   3 trace_codename = function(codename, callback)
   4         local debugid = trace.debugid(codename)
   5         if debugid ~= 0 then
   6                 trace.single(debugid,callback)
   7         else
   8                 printf("WARNING: Cannot locate debugid for '%s'\n", codename)
   9         end
  10 end
  11
  12 initial_timestamp = 0
  13 get_prefix = function(buf, char)
  14         -- if initial_timestamp == 0 then
  15                 -- initial_timestamp = buf.timestamp
  16         -- end
  17         local secs = trace.convert_timestamp_to_nanoseconds(buf.timestamp - initial_timestamp) / 1000000000
  18
  19         return string.format("%s %6.9f %-30s",
  20                 char, secs, buf.debugname)
  21 end
  22
  23 initial_arm_timestamp = 0
  24 format_timestamp_arm = function(ts)
  25         local secs = trace.convert_timestamp_to_nanoseconds(ts - initial_arm_timestamp) / 1000000000
  26         return string.format("%6.9f", secs);
  27 end
  28
  29 initial_intel_timestamp = 0
  30 format_timestamp_intel = function(ts)
  31         local secs = (ts - initial_intel_timestamp) / 1000000000
  32         return string.format("%6.9f", secs);
  33 end
  34
  35 format_timestamp_ns = function(ts)
  36         local secs = (ts) / 1000000000
  37         return string.format("%6.9f", secs);
  38 end
  39
  40 trace_codename("MACH_CLOCK_BRIDGE_RESET_TS", function(buf)
  41         local prefix = get_prefix(buf, "X")
  42         local reason = "UNKNOWN";
  43         if buf[3] == 1 then
  44                 reason = "RecvSentinel"
  45         elseif buf[3] == 2 then
  46                 reason = "ResetTrue"
  47         elseif buf[3] == 3 then
  48                 reason = "RateZero"
  49         end
  50         printf("%s %-15s ( %-10s %-10s ) ----------------------------------------\n",
  51                 prefix, reason, format_timestamp_arm(buf[1]), format_timestamp_intel(buf[2]))
  52
  53         -- initial_arm_timestamp = buf[1]
  54         -- initial_intel_timestamp = buf[2]
  55 end)
  56
  57 trace_codename("MACH_CLOCK_BRIDGE_TS_PARAMS", function(buf)
  58         local prefix = get_prefix(buf, ">")
  59
  60         local rate
  61         if darwin.uint64_to_double then
  62                 rate = darwin.uint64_to_double(buf[3])
  63         else
  64                 rate = math.nan
  65         end
  66
  67         printf("%s %30s( %-10s %-10s ) rate = %f\n",
  68                 prefix, "", format_timestamp_ns(buf[1]), format_timestamp_intel(buf[2]),
  69                 rate)
  70 end)
  71
  72 trace_codename("MACH_CLOCK_BRIDGE_REMOTE_TIME", function(buf)
  73         local prefix = get_prefix(buf, "-")
  74
  75         printf("%s ( %-10s %-10s ) @ %-20s\n",
  76                 prefix, format_timestamp_arm(buf[1]), format_timestamp_intel(buf[2]), format_timestamp_arm(buf[3]))
  77 end)
  78
  79 trace_codename("MACH_CLOCK_BRIDGE_RCV_TS", function(buf)
  80         local prefix = get_prefix(buf, "<")
  81
  82         if buf[2] == 0xfffffffffffffffe then
  83                 printf("%s ( %-10s  Sleep )\n",
  84                         prefix, format_timestamp_arm(buf[1]), format_timestamp_intel(buf[2]))
  85         elseif buf[2] == 0xfffffffffffffffd then
  86                 printf("%s ( %-10s Wake )\n",
  87                         prefix, format_timestamp_arm(buf[1]), format_timestamp_intel(buf[2]))
  88         elseif buf[2] == 0xfffffffffffffffc then
  89                 printf("%s ( %-10s Reset )\n",
  90                         prefix, format_timestamp_arm(buf[1]), format_timestamp_intel(buf[2]))
  91         else
  92                 printf("%s ( %-10s %-10s )\n",
  93                         prefix, format_timestamp_arm(buf[1]), format_timestamp_intel(buf[2]))
  94         end
  95
  96 end)
  97