ll_prof: minor fixes to the issues found while running with chromium.

tools/ll_prof.py

 #!/usr/bin/env python
 #
 # Copyright 2010 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 335 matching lines @@
     self.header_size = header_size
 
 
 class CodeLogReader(object):
   """V8 code event log reader."""
 
   _CODE_INFO_RE = re.compile(
     r"code-info,([^,]+),(\d+)")
 
   _CODE_CREATE_RE = re.compile(
-    r"code-creation,([^,]+),(0x[a-f0-9]+),(\d+),\"([^\"]*)\"(?:,(\d+))?")
+    r"code-creation,([^,]+),(0x[a-f0-9]+),(\d+),\"(.*)\"(?:,(\d+))?")
 
   _CODE_MOVE_RE = re.compile(
     r"code-move,(0x[a-f0-9]+),(0x[a-f0-9]+)")
 
   _CODE_DELETE_RE = re.compile(
     r"code-delete,(0x[a-f0-9]+)")
 
   _SNAPSHOT_POS_RE = re.compile(
     r"snapshot-pos,(0x[a-f0-9]+),(\d+)")
 
@@ skipping 536 matching lines @@
   trace_reader = TraceReader(options.trace)
   while True:
     header, offset = trace_reader.ReadEventHeader()
     if not header:
       break
     events += 1
     if header.type == PERF_RECORD_MMAP:
       start = time.time()
       mmap_info = trace_reader.ReadMmap(header, offset)
       if mmap_info.filename == V8_GC_FAKE_MMAP:
-        log_reader.ReadUpToGC()
+        log_reader.ReadUpToGC(code_info)
       else:
         library_repo.Load(mmap_info, code_map, options)
       mmap_time += time.time() - start
     elif header.type == PERF_RECORD_SAMPLE:
       ticks += 1
       start = time.time()
       sample = trace_reader.ReadSample(header, offset)
       code = code_map.Find(sample.ip)
       if code:
         code.Tick(sample.ip)
@@ skipping 22 matching lines @@
       print "%10d total ticks" % ticks
       print "%10d ticks not in symbols" % missed_ticks
       print "%10d unaccounted ticks" % really_missed_ticks
       print "%10d total symbols" % len([c for c in code_map.AllCode()])
       print "%10d used symbols" % len([c for c in code_map.UsedCode()])
       print "%9.2fs library processing time" % mmap_time
       print "%9.2fs tick processing time" % sample_time
 
   log_reader.Dispose()
   trace_reader.Dispose()