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659507f84e
Previously aliases were counted as full implementation taking up space: setservent 64 55 -9 __GI_setservent 64 55 -9 getservent_r 420 319 -101 __GI_getservent_r 420 319 -101 Teach it to properly handle aliases. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
101 lines
3.3 KiB
Python
Executable File
101 lines
3.3 KiB
Python
Executable File
#!/usr/bin/python
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#
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# Copyright 2004 Matt Mackall <mpm@selenic.com>
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#
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# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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import sys, os, re
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def usage():
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sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
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sys.exit(-1)
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if len(sys.argv) < 3:
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usage()
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for f in sys.argv[1:3]:
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if not os.path.exists(f):
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sys.stderr.write("Error: file '%s' does not exist\n" % f)
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usage()
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sym_args = " ".join(sys.argv[3:])
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def getsizes(file):
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sym, alias = {}, {}
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dynsym_filter = re.compile("^\s+\d+:\s+[\dA-Fa-f]+\s+\d+\s+\w+\s+\w+\s+\w+\s+\w+\s+\w+\n$")
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for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines():
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if not dynsym_filter.match(l): continue
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num, value, size, typ, bind, vis, ndx, name = l.strip().split()
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if ndx == "UND": continue # skip undefined
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if typ in ["SECTION", "FILES"]: continue # skip sections and files
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if "." in name: name = "static." + name.split(".")[0]
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value = int(value, 16)
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size = int(size)
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if bind != "GLOBAL": # see if it is an alias
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alias[name] = {"addr" : value, "size": size}
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else:
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sym[name] = {"addr" : value, "size": size}
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for a_nam, a_dat in alias.iteritems():
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impl = [k for k, v in sym.iteritems() if v.get("addr") == a_dat["addr"]]
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# If the non-GLOBAL sym has an implementation elsewhere then
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# it's an alias, disregard it.
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if not impl:
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# If this non-GLOBAL sym does not have an implementation at
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# another address, then treat it as a normal symbol.
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sym[a_nam] = a_dat
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for l in os.popen("readelf -W -S " + file).readlines():
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x = l.split()
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if len(x)<6: continue
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# Should take these into account too!
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#if x[1] not in [".text", ".rodata", ".symtab", ".strtab"]: continue
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if x[1] not in [".rodata"]: continue
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sym[x[1]] = {"addr" : int(x[3], 16), "size" : int(x[5], 16)}
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return sym
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old = getsizes(sys.argv[1])
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new = getsizes(sys.argv[2])
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grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
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delta, common = [], []
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for a in old.iterkeys():
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if a in new:
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common.append(a)
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for name in old:
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if name not in common:
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remove += 1
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sz = old[name].get("size", 0)
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down += sz
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delta.append((-sz, name))
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for name in new:
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if name not in common:
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add += 1
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sz = new[name].get("size", 0)
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up += sz
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delta.append((sz, name))
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for name in common:
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d = new[name].get("size", 0) - old[name].get("size", 0)
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if d>0: grow, up = grow+1, up+d
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elif d<0: shrink, down = shrink+1, down-d
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else:
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continue
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delta.append((d, name))
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delta.sort()
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delta.reverse()
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print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta")
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for d, n in delta:
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if d:
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old_sz = old.get(n, {}).get("size", "-")
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new_sz = new.get(n, {}).get("size", "-")
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print "%-48s %7s %7s %+7d" % (n, old_sz, new_sz, d)
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print "-"*78
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total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
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% (add, remove, grow, shrink, up, -down, up-down)
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print total % (" "*(80-len(total)))
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