81 lines
2.2 KiB
Python
Executable file
81 lines
2.2 KiB
Python
Executable file
#!/usr/bin/python
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#
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# Copyright 2004 Matt Mackall <mpm@selenic.com>
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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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def usage():
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sys.stderr.write("Usage: %s file1 file2\n" % sys.argv[0])
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sys.exit(-1)
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if len(sys.argv) < 3:
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usage()
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for f in sys.argv[1], sys.argv[2]:
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if not os.path.exists(f):
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sys.stderr.write("Error: file '%s' does not exist\n" % f)
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usage()
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nm_args = " ".join([x for x in sys.argv[3:]])
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def getsizes(file):
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sym = {}
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for l in os.popen("nm --size-sort %s %s" % (nm_args, file)).readlines():
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l = l.strip()
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# Skip empty lines
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if not len(l):
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continue
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# Skip archive members
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if len(l.split()) == 1 and l.endswith(':'):
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continue
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size, type, name = l.split()
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if type in "tTdDbBrR":
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if "." in name: name = "static." + name.split(".")[0]
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sym[name] = sym.get(name, 0) + int(size, 16)
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for l in os.popen("readelf -S " + file).readlines():
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x = l.split()
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if len(x)<6 or x[1] != ".rodata": continue
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sym[".rodata"] = int(x[5], 16)
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return sym
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old = getsizes(sys.argv[1])
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new = getsizes(sys.argv[2])
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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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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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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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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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print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta"))
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for d, n in delta:
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if d: print("%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
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print("-" * 78)
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total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%s\nTotal: %s bytes"\
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% (add, remove, grow, shrink, up, -down, up-down)
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print(total % (" "*(80-len(total))))
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