Contents of /tags/mkinitrd-6_3_4/busybox/scripts/bloat-o-meter
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Revision 1189 -
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Thu Dec 16 01:27:43 2010 UTC (13 years, 9 months ago) by niro
File size: 4644 byte(s)
Thu Dec 16 01:27:43 2010 UTC (13 years, 9 months ago) by niro
File size: 4644 byte(s)
tagged 'mkinitrd-6_3_4'
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 alias.iterkeys(): |
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 old.iterkeys(): |
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)) |
Properties
Name | Value |
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svn:executable | * |