3 # Copyright 2004 Matt Mackall <mpm@selenic.com>
5 # Inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
7 # This software may be used and distributed according to the terms
8 # of the GNU General Public License, incorporated herein by reference.
13 sys.stderr.write("usage: %s [-t] file1 file2\n" % sys.argv[0])
17 flag_timing, dashes = (False, False)
19 for f in sys.argv[1:]:
21 if f == "--": # sym_args
24 if f == "-t": # timings
27 if not os.path.exists(f):
28 sys.stderr.write("Error: file '%s' does not exist\n" % f)
36 if f1 is None or f2 is None:
39 sym_args = " ".join(sys.argv[3 + flag_timing + dashes:])
41 sym, alias, lut = {}, {}, {}
42 for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines():
44 if not (len(l) and l[0].isdigit() and len(l.split()) == 8):
46 num, value, size, typ, bind, vis, ndx, name = l.split()
47 if ndx == "UND": continue # skip undefined
48 if typ in ["SECTION", "FILES"]: continue # skip sections and files
49 if "." in name: name = "static." + name.split(".")[0]
50 value = int(value, 16)
51 size = int(size, 16) if size.startswith('0x') else int(size)
52 if vis != "DEFAULT" and bind != "GLOBAL": # see if it is an alias
53 alias[(value, size)] = {"name" : name}
55 sym[name] = {"addr" : value, "size": size}
56 lut[(value, size)] = 0
57 for addr, sz in iter(alias.keys()):
58 # If the non-GLOBAL sym has an implementation elsewhere then
59 # it's an alias, disregard it.
60 if not (addr, sz) in lut:
61 # If this non-GLOBAL sym does not have an implementation at
62 # another address, then treat it as a normal symbol.
63 sym[alias[(addr, sz)]["name"]] = {"addr" : addr, "size": sz}
64 for l in os.popen("readelf -W -S " + file).readlines():
67 # Should take these into account too!
68 #if x[1] not in [".text", ".rodata", ".symtab", ".strtab"]: continue
69 if x[1] not in [".rodata"]: continue
70 sym[x[1]] = {"addr" : int(x[3], 16), "size" : int(x[5], 16)}
74 start_t1 = int(time.time() * 1e9)
77 end_t1 = int(time.time() * 1e9)
78 start_t2 = int(time.time() * 1e9)
81 end_t2 = int(time.time() * 1e9)
82 start_t3 = int(time.time() * 1e9)
83 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
84 delta, common = [], {}
86 for name in iter(old.keys()):
91 if name not in common:
93 sz = old[name]["size"]
95 delta.append((-sz, name))
98 if name not in common:
100 sz = new[name]["size"]
102 delta.append((sz, name))
105 d = new[name].get("size", 0) - old[name].get("size", 0)
106 if d>0: grow, up = grow+1, up+d
107 elif d<0: shrink, down = shrink+1, down-d
110 delta.append((d, name))
115 end_t3 = int(time.time() * 1e9)
117 print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta"))
120 old_sz = old.get(n, {}).get("size", "-")
121 new_sz = new.get(n, {}).get("size", "-")
122 print("%-48s %7s %7s %+7d" % (n, old_sz, new_sz, d))
124 total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
125 % (add, remove, grow, shrink, up, -down, up-down)
126 print(total % (" "*(80-len(total))))
128 print("\n%d/%d; %d Parse origin/new; processing nsecs" %
129 (end_t1-start_t1, end_t2-start_t2, end_t3-start_t3))
130 print("total nsecs: %d" % (end_t3-start_t1))