1 files changed, 130 insertions, 0 deletions
diff --git a/bld/bloat-o-meter b/bld/bloat-o-meter
new file mode 100755
index 0000000..6db2a5e
--- /dev/null
+++ b/bld/bloat-o-meter
@@ -0,0 +1,130 @@
+#!/usr/bin/env python
+#
+# Copyright 2004 Matt Mackall <mpm@selenic.com>
+#
+# 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
+
+def usage():
+    sys.stderr.write("usage: %s [-t] file1 file2\n" % sys.argv[0])
+    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
+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, 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: 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
+
+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 name in iter(old.keys()):
+    if name in new:
+        common[name] = 1
+
+for name in old:
+    if name not in common:
+        remove += 1
+        sz = old[name]["size"]
+        down += sz
+        delta.append((-sz, name))
+
+for name in new:
+    if name not in common:
+        add += 1
+        sz = new[name]["size"]
+        up += sz
+        delta.append((sz, name))
+
+for name in common:
+        d = new[name].get("size", 0) - old[name].get("size", 0)
+        if d>0: grow, up = grow+1, up+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"))
+for d, n in delta:
+    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))))
+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))