Incorporate patches by Paolo Giarrusso to allow profiling...

tools/linux-tick-processor.py

 #!/usr/bin/env python
 #
 # Copyright 2008 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 12 matching lines @@
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Usage: process-ticks.py <logfile>
 # Where <logfile> is the log file name (eg, v8.log).
 
-import os, re, sys, tickprocessor, getopt;
+import subprocess, re, sys, tickprocessor, getopt
 
 class LinuxTickProcessor(tickprocessor.TickProcessor):
 
   def ParseVMSymbols(self, filename, start, end):
     """Extract symbols and add them to the cpp entries."""
-    pipe = os.popen('nm -n %s | c++filt' % filename, 'r')
+    # Extra both dynamic and non-dynamic symbols.
+    command = 'nm -C -n "%s"; nm -C -n -D "%s"' % (filename, filename)
+    process = subprocess.Popen(command, shell=True,
+                               stdout=subprocess.PIPE,
+                               stderr=subprocess.STDOUT)
+    pipe = process.stdout
     try:
       for line in pipe:
         row = re.match('^([0-9a-fA-F]{8}) . (.*)$', line)
         if row:
           addr = int(row.group(1), 16)
           if addr < start and addr < end - start:
             addr += start
           self.cpp_entries.Insert(addr, tickprocessor.CodeEntry(addr, row.group(2)))
     finally:
       pipe.close()
@@ skipping 22 matching lines @@
       state = 3
   # do the processing.
   if len(args) != 1:
       Usage();
   tick_processor = LinuxTickProcessor()
   tick_processor.ProcessLogfile(args[0], state)
   tick_processor.PrintResults()
 
 if __name__ == '__main__':
   Main()