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104 lines
3.4 KiB
104 lines
3.4 KiB
#!/usr/bin/env python3 |
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# |
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# Copyright 2004 Matt Mackall <[email protected]> |
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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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from signal import signal, SIGPIPE, SIG_DFL |
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signal(SIGPIPE, SIG_DFL) |
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if len(sys.argv) < 3: |
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sys.stderr.write("usage: %s [option] file1 file2\n" % sys.argv[0]) |
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sys.stderr.write("The options are:\n") |
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sys.stderr.write("-c categorize output based on symbol type\n") |
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sys.stderr.write("-d Show delta of Data Section\n") |
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sys.stderr.write("-t Show delta of text Section\n") |
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sys.exit(-1) |
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re_NUMBER = re.compile(r'\.[0-9]+') |
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def getsizes(file, format): |
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sym = {} |
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with os.popen("nm --size-sort " + file) as f: |
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for line in f: |
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if line.startswith("\n") or ":" in line: |
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continue |
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size, type, name = line.split() |
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if type in format: |
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# strip generated symbols |
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if name.startswith("__mod_"): continue |
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if name.startswith("__se_sys"): continue |
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if name.startswith("__se_compat_sys"): continue |
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if name.startswith("__addressable_"): continue |
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if name == "linux_banner": continue |
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# statics and some other optimizations adds random .NUMBER |
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name = re_NUMBER.sub('', name) |
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sym[name] = sym.get(name, 0) + int(size, 16) |
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return sym |
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def calc(oldfile, newfile, format): |
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old = getsizes(oldfile, format) |
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new = getsizes(newfile, format) |
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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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otot, ntot = 0, 0 |
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for a in old: |
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if a in new: |
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common[a] = 1 |
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for name in old: |
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otot += old[name] |
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if name not in common: |
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remove += 1 |
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down += old[name] |
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delta.append((-old[name], name)) |
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for name in new: |
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ntot += new[name] |
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if name not in common: |
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add += 1 |
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up += new[name] |
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delta.append((new[name], name)) |
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for name in common: |
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d = new.get(name, 0) - old.get(name, 0) |
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if d>0: grow, up = grow+1, up+d |
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if d<0: shrink, down = shrink+1, down-d |
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delta.append((d, name)) |
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delta.sort() |
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delta.reverse() |
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return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot |
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def print_result(symboltype, symbolformat, argc): |
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grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \ |
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calc(sys.argv[argc - 1], sys.argv[argc], symbolformat) |
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print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ |
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(add, remove, grow, shrink, up, -down, up-down)) |
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print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta")) |
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for d, n in delta: |
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if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) |
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if otot: |
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percent = (ntot - otot) * 100.0 / otot |
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else: |
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percent = 0 |
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print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent)) |
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if sys.argv[1] == "-c": |
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print_result("Function", "tT", 3) |
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print_result("Data", "dDbB", 3) |
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print_result("RO Data", "rR", 3) |
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elif sys.argv[1] == "-d": |
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print_result("Data", "dDbBrR", 3) |
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elif sys.argv[1] == "-t": |
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print_result("Function", "tT", 3) |
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else: |
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print_result("Function", "tTdDbBrR", 2)
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