X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=scripts%2Fbloat-o-meter;h=cb861b8e9250cc4aeca26823cc51826b1b4aca75;hb=a94eeb0b4222de7f05594c93ffdd84faea5b8e2d;hp=67b3d290d7397d83aeef510d12987dec796c880d;hpb=2425bdce34cd142b29eabad00927a9c473b05ecb;p=oweals%2Fbusybox.git diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter index 67b3d290d..cb861b8e9 100755 --- a/scripts/bloat-o-meter +++ b/scripts/bloat-o-meter @@ -1,65 +1,135 @@ -#!/usr/bin/python +#!/usr/bin/env python # # Copyright 2004 Matt Mackall # -# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen +# 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 +import sys, os -if len(sys.argv) != 3: - sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) - sys.exit(-1) +def usage(): + sys.stderr.write("usage: %s [-t] file1 file2 [-- ]\n" + % sys.argv[0]) + sys.stderr.write("\t-t\tShow time spent on parsing/processing\n") + sys.stderr.write("\t--\tPass additional parameters to readelf\n") + 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 + else: + usage() +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 = {} - for l in os.popen("nm --size-sort " + file).readlines(): - size, type, name = l[:-1].split() - if type in "tTdDbBrR": - if "." in name: name = "static." + name.split(".")[0] - sym[name] = sym.get(name, 0) + int(size, 16) - for l in os.popen("readelf -S " + file).readlines(): + sym, alias, lut = {}, {}, {} + for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines(): + 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 + if "." in name: name = "static." + name.split(".")[0] + value = int(value, 16) + size = int(size, 16) if size.startswith('0x') else 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 iter(alias.keys()): + # 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 or x[1] != ".rodata": continue - sym[".rodata"] = int(x[5], 16) + 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 -old = getsizes(sys.argv[1]) -new = getsizes(sys.argv[2]) +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 a in old: - if a in new: - common[a] = 1 +for name in iter(old.keys()): + if name in new: + common[name] = 1 for name in old: if name not in common: remove += 1 - down += old[name] - delta.append((-old[name], name)) + sz = old[name]["size"] + down += sz + delta.append((-sz, name)) for name in new: if name not in common: add += 1 - up += new[name] - delta.append((new[name], name)) + sz = new[name]["size"] + up += sz + delta.append((sz, name)) for name in common: - d = new.get(name, 0) - old.get(name, 0) + d = new[name].get("size", 0) - old[name].get("size", 0) if d>0: grow, up = grow+1, up+d - if d<0: shrink, down = shrink+1, down-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") +print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta")) for d, n in delta: - if d: print "%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d) -print "-"*78 + 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))) +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))