dso-stats.py

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#!/usr/bin/env python
 
# Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 
# @file: PyUtils/bin/dso-stats.py
# @purpose: compile statistics about shared libraries
# @author:  Scott Snyder
 
import re
import sys
import os
import subprocess
 
def getstatus(cmd):
    sc,_ = subprocess.getstatusoutput(cmd)
    return sc
subprocess.getstatus = getstatus
del getstatus
 
def getoutput(cmd):
    _,out = subprocess.getstatusoutput(cmd)
    return out
subprocess.getoutput = getoutput
del getoutput
 
 
#lib = 'atlas-work4/InstallArea/i686-slc4-gcc34-dbg/lib/libAthenaROOTAccess.so'
def _getpagesz():
    import resource
    sz = resource.getpagesize()
    del resource
    return sz
PAGESIZE = int(_getpagesz())
del _getpagesz
 
 
pat = re.compile (' *[0-9]* ([^ ]+) *([0-9a-f]+)')
 
format = "%(name)-30s %(dso)5s %(code)5s %(puredata)5s %(cpp)5s %(initdata)5s %(bss)5s %(tbss)5s %(frag)5s %(total)6s"
 
def parse_lib (lib):
    out = subprocess.getoutput ("objdump -h " + lib)
    secs = []
    for l in out.split ('\n'):
        m = pat.match (l)
        if m:
            secs.append ((m.group(1), int(m.group(2), 16)))
    return secs
 
 
def _frag (sz):
    return ((sz + PAGESIZE-1) & (~(PAGESIZE-1))) - sz
 
 
def _cleanname (name):
    if name == 'None':
        return 'None'
    name = os.path.basename (name)
    name = os.path.splitext(name)[0]
    if name.startswith ('lib'):
        name = name[3:]
    return name
 
 
def _form (x):
    return int ((x+512) / 1024)
 
class Data:
    def __init__ (self, secs = None, name = None):
        self.name = name
        self.dso = 0
        self.code = 0
        self.puredata = 0
        self.cpp = 0
        self.java = 0
        self.initdata = 0
        self.bss = 0
        self.tbss = 0
        self.frag = 0
 
        self.ro = 0
        self.rw = 0
 
        if secs:
            self.add_secs (secs)
            self.est_frag()
        return
 
 
    def __iadd__ (self, other):
        self.dso += other.dso
        self.code += other.code
        self.puredata += other.puredata
        self.cpp += other.cpp
        self.java += other.java
        self.initdata += other.initdata
        self.bss += other.bss
        self.tbss += other.tbss
        self.ro += other.ro
        self.rw += other.rw
        self.frag += other.frag
        return self
 
 
    def est_frag (self):
        self.frag += _frag (self.ro)
        self.frag += _frag (self.rw)
        self.frag += _frag (self.bss)
        self.frag += _frag (self.tbss)
        return
 
 
    def total (self):
        return (self.dso + self.code + self.puredata + self.cpp +
                self.java + self.initdata + self.frag + self.bss + self.tbss)
 
 
    def add_secs (self, secs):
        for s, sz in secs:
            if s in ['.hash', '.dynsym', '.dynstr', '.gnu.version',
                     '.gnu.version_r', '.rel.dyn', '.rel.plt',
                     '.init', '.plt', '.fini', '.init_array', '.fini_array',
                     '.gnu.hash', '.rela.dyn', '.rela.plt',
                     '.data.rel.ro']:
                self.dso += sz
                self.ro += sz
 
            elif s in ['.text']:
                self.code += sz
                self.ro += sz
 
            elif s in ['.rodata']:
                self.puredata += sz
                self.ro += sz
 
            elif s in ['.eh_frame_hdr', '.eh_frame', '.gcc_except_table']:
                self.cpp += sz
                self.ro += sz
 
            elif s in ['.ctors', '.dtors']:
                self.cpp += sz
                self.rw += sz
 
 
            elif s in ['.jcr']:
                self.java += sz
                self.rw += sz
 
            elif s in ['.dynamic', '.got', '.got.plt', '.plt.got']:
                self.dso += sz
                self.rw += sz
 
            elif s in ['.data']:
                self.initdata += sz
                self.rw += sz
 
            elif s in ['.bss']:
                self.bss += sz
 
            elif s in ['.tbss']:
                self.tbss += sz
 
            elif s in ['.comment', '.gnu_debuglink'] or s.startswith ('.debug'):
                pass
 
            else:
                print ('** Unknown section [%s] **' % s, file=sys.stderr)
 
        return
 
 
 
    def dump (self, f):
        kw = {}
        kw['name'] = _cleanname (self.name)
        kw['dso'] = _form (self.dso)
        kw['code'] = _form (self.code)
        kw['puredata'] = _form (self.puredata)
        kw['cpp'] = _form (self.cpp)
        kw['java'] = _form (self.java)
        kw['initdata'] = _form (self.initdata)
        kw['frag'] = _form (self.frag)
        kw['bss'] = _form (self.bss)
        kw['tbss'] = _form (self.tbss)
        kw['total'] = _form (self.total())
        print (format % kw, file=f)
 
def main():
 
   import optparse
   parser = optparse.OptionParser(description="compile size statistics for shared libraries",
                                              usage="%prog LIB [LIB...]")
 
   (opt, args) = parser.parse_args()
   if len(args)==0:
        parser.error("Invalid number of arguments specified")
 
   libs = []
   total = Data(name = 'Total')
   for lib in args:
        secs = parse_lib(lib)
        data = Data (secs, name = lib)
        libs.append (data)
        total += data
   libs.sort (key = lambda x: x.total(), reverse=True)
   kw = {'name' : 'Name',
         'dso'  : 'DSO',
         'code' : 'Code',
         'puredata': 'Pure',
         'cpp'  : 'C++',
         'java' : 'Java',
         'initdata': 'data',
         'bss'  : 'BSS',
         'tbss' : 'TBSS',
         'frag' : 'Frag',
         'total': 'Total'}
   print (format % kw, file=sys.stdout)
   for l in libs:
        l.dump (sys.stdout)
   total.dump (sys.stdout)
 
   return 0
 
 
if __name__ == "__main__":
   try:
        sys.exit(main())
   except KeyboardInterrupt:
        sys.exit(1)