| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 | from signal import signal, SIGPIPE, SIG_DFL |
| 12 | |
| 13 | signal(SIGPIPE, SIG_DFL) |
| 14 | |
| 15 | if len(sys.argv) < 3: |
| 16 | sys.stderr.write("usage: %s [option] file1 file2\n" % sys.argv[0]) |
| 17 | sys.stderr.write("The options are:\n") |
| 18 | sys.stderr.write("-c categorize output based on symbol type\n") |
| 19 | sys.stderr.write("-d Show delta of Data Section\n") |
| 20 | sys.stderr.write("-t Show delta of text Section\n") |
| 21 | sys.exit(-1) |
| 22 | |
| 23 | re_NUMBER = re.compile(r'\.[0-9]+') |
| 24 | |
| 25 | def getsizes(file, format): |
| 26 | sym = {} |
| 27 | with os.popen("nm --size-sort " + file) as f: |
| 28 | for line in f: |
| 29 | size, type, name = line.split() |
| 30 | if type in format: |
| 31 | # strip generated symbols |
| 32 | if name.startswith("__mod_"): continue |
| 33 | if name.startswith("__se_sys"): continue |
| 34 | if name.startswith("__se_compat_sys"): continue |
| 35 | if name == "linux_banner": continue |
| 36 | # statics and some other optimizations adds random .NUMBER |
| 37 | name = re_NUMBER.sub('', name) |
| 38 | sym[name] = sym.get(name, 0) + int(size, 16) |
| 39 | return sym |
| 40 | |
| 41 | def calc(oldfile, newfile, format): |
| 42 | old = getsizes(oldfile, format) |
| 43 | new = getsizes(newfile, format) |
| 44 | grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 |
| 45 | delta, common = [], {} |
| 46 | otot, ntot = 0, 0 |
| 47 | |
| 48 | for a in old: |
| 49 | if a in new: |
| 50 | common[a] = 1 |
| 51 | |
| 52 | for name in old: |
| 53 | otot += old[name] |
| 54 | if name not in common: |
| 55 | remove += 1 |
| 56 | down += old[name] |
| 57 | delta.append((-old[name], name)) |
| 58 | |
| 59 | for name in new: |
| 60 | ntot += new[name] |
| 61 | if name not in common: |
| 62 | add += 1 |
| 63 | up += new[name] |
| 64 | delta.append((new[name], name)) |
| 65 | |
| 66 | for name in common: |
| 67 | d = new.get(name, 0) - old.get(name, 0) |
| 68 | if d>0: grow, up = grow+1, up+d |
| 69 | if d<0: shrink, down = shrink+1, down-d |
| 70 | delta.append((d, name)) |
| 71 | |
| 72 | delta.sort() |
| 73 | delta.reverse() |
| 74 | return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot |
| 75 | |
| 76 | def print_result(symboltype, symbolformat, argc): |
| 77 | grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \ |
| 78 | calc(sys.argv[argc - 1], sys.argv[argc], symbolformat) |
| 79 | |
| 80 | print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ |
| 81 | (add, remove, grow, shrink, up, -down, up-down)) |
| 82 | print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta")) |
| 83 | for d, n in delta: |
| 84 | if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) |
| 85 | |
| 86 | if otot: |
| 87 | percent = (ntot - otot) * 100.0 / otot |
| 88 | else: |
| 89 | percent = 0 |
| 90 | print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent)) |
| 91 | |
| 92 | if sys.argv[1] == "-c": |
| 93 | print_result("Function", "tT", 3) |
| 94 | print_result("Data", "dDbB", 3) |
| 95 | print_result("RO Data", "rR", 3) |
| 96 | elif sys.argv[1] == "-d": |
| 97 | print_result("Data", "dDbBrR", 3) |
| 98 | elif sys.argv[1] == "-t": |
| 99 | print_result("Function", "tT", 3) |
| 100 | else: |
| 101 | print_result("Function", "tTdDbBrR", 2) |