diff options
Diffstat (limited to 'scripts/bloat-o-meter')
| -rwxr-xr-x | scripts/bloat-o-meter | 97 |
1 files changed, 68 insertions, 29 deletions
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter index aa12696..acee6be 100755 --- a/scripts/bloat-o-meter +++ b/scripts/bloat-o-meter @@ -7,44 +7,69 @@ # 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#, re def usage(): - sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) + sys.stderr.write("usage: %s [-t] file1 file2\n" % sys.argv[0]) sys.exit(-1) -if len(sys.argv) < 3: - usage() +f1, f2 = (None, None) +flag_timing, dashes = (False, False) -for f in sys.argv[1:3]: - if not os.path.exists(f): - sys.stderr.write("Error: file '%s' does not exist\n" % f) - usage() +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 +if flag_timing: + import time +if f1 is None or f2 is None: + usage() -sym_args = " ".join(sys.argv[3:]) +sym_args = " ".join(sys.argv[3 + flag_timing + dashes:]) def getsizes(file): - sym, alias = {}, {} - dynsym_filter = re.compile("^\s+\d+:\s+[\dA-Fa-f]+\s+\d+\s+\w+\s+\w+\s+\w+\s+\w+\s+\w+\n$") + sym, alias, lut = {}, {}, {} + #dynsym_filter = re.compile("^\d+:\s+[\dA-Fa-f]+\s+\d+\s+\w+\s+\w+\s+\w+\s+\w+\s+\w+$") for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines(): - if not dynsym_filter.match(l): continue - num, value, size, typ, bind, vis, ndx, name = l.strip().split() - if ndx == "UND": continue # skip undefined - if typ in ["SECTION", "FILES"]: continue # skip sections and files + if True: + 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 + #else: + # l = l.strip() + # match = dynsym_filter.match(l) + # if not match: continue + # x, value, size, typ, bind, x, 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) - if bind != "GLOBAL": # see if it is an alias - alias[name] = {"addr" : value, "size": 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} - for a_nam, a_dat in alias.iteritems(): - impl = [k for k, v in sym.iteritems() if v.get("addr") == a_dat["addr"]] + lut[(value, size)] = 0 + for addr, sz in alias.iterkeys(): # If the non-GLOBAL sym has an implementation elsewhere then # it's an alias, disregard it. - if not impl: + 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[a_nam] = a_dat + 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: continue @@ -54,26 +79,34 @@ def getsizes(file): 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 = [], [] +delta, common = [], {} -for a in old.iterkeys(): - if a in new: - common.append(a) +for name in old.iterkeys(): + if name in new: + common[name] = 1 for name in old: if name not in common: remove += 1 - sz = old[name].get("size", 0) + sz = old[name]["size"] down += sz delta.append((-sz, name)) for name in new: if name not in common: add += 1 - sz = new[name].get("size", 0) + sz = new[name]["size"] up += sz delta.append((sz, name)) @@ -87,6 +120,8 @@ for name in common: delta.sort() delta.reverse() +if flag_timing: + end_t3 = int(time.time() * 1e9) print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta") for d, n in delta: @@ -98,3 +133,7 @@ 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))) +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)) |