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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | #!/usr/bin/python
#
# Copyright 2004 Matt Mackall <mpm@selenic.com>
#
# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import sys, os#, re
def usage():
sys.stderr.write("usage: %s [-t] file1 file2\n" % sys.argv[0])
sys.exit(-1)
f1, f2 = (None, None)
flag_timing, dashes = (False, False)
for f in sys.argv[1:]:
if f.startswith("-"):
if f == "--": # sym_args
dashes = True
break
if f == "-t": # timings
flag_timing = True
else:
if not os.path.exists(f):
sys.stderr.write("Error: file '%s' does not exist\n" % f)
usage()
if f1 is None:
f1 = f
elif f2 is None:
f2 = f
if flag_timing:
import time
if f1 is None or f2 is None:
usage()
sym_args = " ".join(sys.argv[3 + flag_timing + dashes:])
def getsizes(file):
sym, alias, lut = {}, {}, {}
#dynsym_filter = re.compile("^\d+:\s+[\dA-Fa-f]+\s+\d+\s+\w+\s+\w+\s+\w+\s+\w+\s+\w+$")
for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines():
if True:
l = l.strip()
if not (len(l) and l[0].isdigit() and len(l.split()) == 8):
continue
num, value, size, typ, bind, vis, ndx, name = l.split()
if ndx == "UND": continue # skip undefined
if typ in ["SECTION", "FILES"]: continue # skip sections and files
#else:
# l = l.strip()
# match = dynsym_filter.match(l)
# if not match: continue
# x, value, size, typ, bind, x, ndx, name = l.split()
# if ndx == "UND": continue # skip undefined
# if typ in ["SECTION", "FILES"]: continue # skip sections and files
if "." in name: name = "static." + name.split(".")[0]
value = int(value, 16)
size = int(size)
if vis != "DEFAULT" and bind != "GLOBAL": # see if it is an alias
alias[(value, size)] = {"name" : name}
else:
sym[name] = {"addr" : value, "size": size}
lut[(value, size)] = 0
for addr, sz in alias.iterkeys():
# If the non-GLOBAL sym has an implementation elsewhere then
# it's an alias, disregard it.
if not (addr, sz) in lut:
# If this non-GLOBAL sym does not have an implementation at
# another address, then treat it as a normal symbol.
sym[alias[(addr, sz)]["name"]] = {"addr" : addr, "size": sz}
for l in os.popen("readelf -W -S " + file).readlines():
x = l.split()
if len(x)<6: continue
# Should take these into account too!
#if x[1] not in [".text", ".rodata", ".symtab", ".strtab"]: continue
if x[1] not in [".rodata"]: continue
sym[x[1]] = {"addr" : int(x[3], 16), "size" : int(x[5], 16)}
return sym
if flag_timing:
start_t1 = int(time.time() * 1e9)
old = getsizes(f1)
if flag_timing:
end_t1 = int(time.time() * 1e9)
start_t2 = int(time.time() * 1e9)
new = getsizes(f2)
if flag_timing:
end_t2 = int(time.time() * 1e9)
start_t3 = int(time.time() * 1e9)
grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
delta, common = [], {}
for name in old.iterkeys():
if name in new:
common[name] = 1
for name in old:
if name not in common:
remove += 1
sz = old[name]["size"]
down += sz
delta.append((-sz, name))
for name in new:
if name not in common:
add += 1
sz = new[name]["size"]
up += sz
delta.append((sz, name))
for name in common:
d = new[name].get("size", 0) - old[name].get("size", 0)
if d>0: grow, up = grow+1, up+d
elif d<0: shrink, down = shrink+1, down-d
else:
continue
delta.append((d, name))
delta.sort()
delta.reverse()
if flag_timing:
end_t3 = int(time.time() * 1e9)
print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta"))
for d, n in delta:
if d:
old_sz = old.get(n, {}).get("size", "-")
new_sz = new.get(n, {}).get("size", "-")
print("%-48s %7s %7s %+7d" % (n, old_sz, new_sz, d))
print("-"*78)
total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
% (add, remove, grow, shrink, up, -down, up-down)
print(total % (" "*(80-len(total))))
if flag_timing:
print("\n%d/%d; %d Parse origin/new; processing nsecs" %
(end_t1-start_t1, end_t2-start_t2, end_t3-start_t3))
print("total nsecs: %d" % (end_t3-start_t1))
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