From eb3fd68203fee7c63245c702914c2acd3332d65a Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Thu, 22 Sep 2022 11:29:07 -0700
Subject: Initial commit.

---
 pt | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100755 pt

(limited to 'pt')

diff --git a/pt b/pt
new file mode 100755
index 0000000..6797565
--- /dev/null
+++ b/pt
@@ -0,0 +1,95 @@
+#!/usr/bin/ruby
+
+$filter = ARGV
+
+$parents = {}
+$events = {}
+$has = {}
+$data = {}
+$horiz = {}
+$maxtime = -1
+
+$stdin.each_line do | line |
+  case line
+
+    when /^(\d+) parent (\d+)$/
+      child = $1.to_i
+      parent = $2.to_i
+      $parents[child] = parent
+
+    when /^@(\d+) (\d+) (\S*) (.*)$/
+      time = $1.to_i
+      rec = $2.to_i
+      event = $3
+      data = $4
+      if event.size > 0
+        $events[rec] ||= {}
+        $events[rec][time] = event
+        $has[rec] ||= {}
+        $has[rec][event] = true
+        $horiz[event] ||= ""
+        $horiz[event] = $horiz[event].ljust(time)
+        $horiz[event][time] = event
+      end
+      if data.size > 0
+        $data[rec] ||= ""
+        $data[rec] += " #{event}@#{time}:" if event.size > 0
+        $data[rec] += " #{data}"
+      end
+      $maxtime = [$maxtime, time+1].max
+
+    else
+      raise "Unexpected line: #{line}"
+  end
+end
+
+$hier = {}
+$hier_direct = {}
+
+$events.each_key do | rec |
+  subhier = {}
+  $hier_direct[rec] = subhier
+  if $parents.key?(rec)
+    $hier_direct[$parents[rec]][rec] = subhier
+  else
+    $hier[rec] = subhier
+  end
+end
+
+$order = []
+
+def flatten(hier)
+  hier.each do | rec, subhier |
+    $order << rec
+    flatten(subhier)
+  end
+end
+flatten($hier)
+
+rwidth = $order.map { | x | x.to_s.size }.max
+
+$horiz.keys.sort.each do | occ |
+  $stdout.write(" " * rwidth + "  #{$horiz[occ].ljust($maxtime)}")
+  count = $horiz[occ].delete(" ").size
+  $stdout.write(" #{($maxtime.to_f / count.to_f).round(2).to_s.rjust(5)} cyc/evt\n")
+end
+
+mwidth = 0
+
+$order.each do | rec |
+  estr = ""
+  filter_match = $filter.empty?
+  $has[rec].each_key do | event |
+    filter_match ||= $filter.include?(event)
+  end
+  next unless filter_match
+  $events[rec].keys.sort.each do | time |
+    estr = estr.ljust(time + 1, estr.size == 0 ? " " : "-")
+    estr[time] = $events[rec][time] if $events[rec][time].size > 0
+  end
+  estr += " " * 5
+  estr = estr.ljust(mwidth - 1)
+  estr = estr.ljust(estr.size + 20 - estr.size % 20)
+  mwidth = [mwidth, estr.size].max
+  $stdout.write(rec.to_s.rjust(rwidth) + ": #{estr}#{$data[rec]}\n")
+end
-- 
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