diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | CHANGELOG | 4 | ||||
| -rw-r--r-- | Makefile | 25 | ||||
| -rwxr-xr-x | bld/bloat-o-meter | 130 |
4 files changed, 154 insertions, 6 deletions
@@ -2,6 +2,7 @@ src/*.o src/*.mo src/dnsmasq.pot src/dnsmasq +src/dnsmasq_baseline src/.configured contrib/wrt/dhcp_lease_time contrib/wrt/dhcp_release @@ -107,6 +107,10 @@ version 2.67 Fix crash with empty tag: in --dhcp-range. Thanks to Kaspar Schleiser for the bug report. + Add "baseline" and "bloatcheck" makefile targets, for + revealing size changes during development. Thanks to + Vladislav Grishenko for the patch. + version 2.66 Add the ability to act as an authoritative DNS @@ -77,10 +77,14 @@ all : $(BUILDDIR) build_libs="$(dbus_libs) $(idn_libs) $(ct_libs) $(lua_libs) $(sunos_libs)" \ -f $(top)/Makefile dnsmasq -clean : - rm -f *~ $(BUILDDIR)/*.mo contrib/*/*~ */*~ $(BUILDDIR)/*.pot +mostly_clean : + rm -f $(BUILDDIR)/*.mo $(BUILDDIR)/*.pot rm -f $(BUILDDIR)/.configured $(BUILDDIR)/*.o $(BUILDDIR)/dnsmasq.a $(BUILDDIR)/dnsmasq - rm -rf core */core + +clean : mostly_clean + rm -f $(BUILDDIR)/dnsmasq_baseline + rm -f core */core + rm -f *~ contrib/*/*~ */*~ install : all install-common @@ -113,6 +117,16 @@ merge : $(BUILDDIR): mkdir -p $(BUILDDIR) +# rules below are helpers for size tracking + +baseline : mostly_clean all + @cd $(BUILDDIR) && \ + mv dnsmasq dnsmasq_baseline + +bloatcheck : $(BUILDDIR)/dnsmasq_baseline mostly_clean all + @cd $(BUILDDIR) && \ + $(top)/bld/bloat-o-meter dnsmasq_baseline dnsmasq; \ + size dnsmasq_baseline dnsmasq # rules below are targets in recusive makes with cwd=$(BUILDDIR) @@ -126,7 +140,7 @@ $(objs:.o=.c) $(hdrs): .c.o: $(CC) $(CFLAGS) $(COPTS) $(i18n) $(build_cflags) $(RPM_OPT_FLAGS) -c $< -dnsmasq : .configured $(hdrs) $(objs) +dnsmasq : .configured $(hdrs) $(objs) $(CC) $(LDFLAGS) -o $@ $(objs) $(build_libs) $(LIBS) dnsmasq.pot : $(objs:.o=.c) $(hdrs) @@ -135,5 +149,4 @@ dnsmasq.pot : $(objs:.o=.c) $(hdrs) %.mo : $(top)/$(PO)/%.po dnsmasq.pot $(MSGMERGE) -o - $(top)/$(PO)/$*.po dnsmasq.pot | $(MSGFMT) -o $*.mo - - -.PHONY : all clean install install-common all-i18n install-i18n merge +.PHONY : all clean mostly_clean install install-common all-i18n install-i18n merge baseline bloatcheck 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)) |