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