LXR qemu/scripts/analyze-inclusions

   1#! /bin/sh
   2#
   3# Copyright (C) 2016 Red Hat, Inc.
   4#
   5# Author: Paolo Bonzini <pbonzini@redhat.com>
   6#
   7# Print statistics about header file inclusions.
   8#
   9# The script has two modes of execution:
  10#
  11# 1) if invoked with a path on the command line (possibly
  12# preceded by a "--" argument), it will run the analysis on
  13# an existing build directory
  14#
  15# 2) otherwise, it will configure and builds QEMU itself in a
  16# "+build" subdirectory which is left around when the script
  17# exits.  In this case the command line is passed directly to
  18# "make" (typically used for a "-j" argument suitable for your
  19# system).
  20#
  21# Inspired by a post by Markus Armbruster.
  22
  23case "x$1" in
  24x--)
  25  shift
  26  cd "$1" || exit $?
  27  ;;
  28x-* | x)
  29  mkdir -p +build
  30  cd +build
  31  test -f Makefile && make distclean
  32  ../configure
  33  make "$@"
  34  ;;
  35*)
  36  cd "$1" || exit $?
  37esac
  38
  39QEMU_CFLAGS=$(sed -n s/^QEMU_CFLAGS=//p config-host.mak)
  40QEMU_INCLUDES=$(sed -n s/^QEMU_INCLUDES=//p config-host.mak | \
  41    sed 's/$(SRC_PATH)/../g' )
  42CFLAGS=$(sed -n s/^CFLAGS=//p config-host.mak)
  43
  44grep_include() {
  45  find . -name "*.d" -exec grep -l "$@" {} + | wc -l
  46}
  47
  48echo Found $(find . -name "*.d" | wc -l) object files
  49echo $(grep_include -F 'include/qemu-common.h') files include qemu-common.h
  50echo $(grep_include -F 'hw/hw.h') files include hw/hw.h
  51echo $(grep_include 'target/[a-z0-9]*/cpu\.h') files include cpu.h
  52echo $(grep_include -F 'qapi-types.h') files include qapi-types.h
  53echo $(grep_include -F 'trace/generated-tracers.h') files include generated-tracers.h
  54echo $(grep_include -F 'qapi/error.h') files include qapi/error.h
  55echo $(grep_include -F 'qom/object.h') files include qom/object.h
  56echo $(grep_include -F 'block/aio.h') files include block/aio.h
  57echo $(grep_include -F 'exec/memory.h') files include exec/memory.h
  58echo $(grep_include -F 'fpu/softfloat.h') files include fpu/softfloat.h
  59echo $(grep_include -F 'qemu/bswap.h') files include qemu/bswap.h
  60echo
  61
  62awk1='
  63    /^# / { file = $3;next }
  64    NR>1 { bytes[file]+=length()+1; lines[file]++ }
  65    END { for(i in lines) print i,lines[i],bytes[i] }'
  66
  67awk2='
  68    {tot_l+=$2;tot_b+=$3;tot_f++}
  69    /\/usr.*\/glib/ {glib_l+=$2;glib_b+=$3;glib_f++;next}
  70    /\/usr/ {sys_l+=$2;sys_b+=$3;sys_f++;next}
  71    {qemu_l+=$2;qemu_b+=$3;qemu_f++;next}
  72    END {
  73      printf "%s\t %s\t %s\t %s\n", "lines", "bytes", "files", "source"
  74      printf "%s\t %s\t %s\t %s\n", qemu_l, qemu_b, qemu_f, "QEMU"
  75      printf "%s\t %s\t %s\t %s\n", sys_l, sys_b, sys_f, "system"
  76      printf "%s\t %s\t %s\t %s\n", glib_l, glib_b, glib_f, "glib"
  77      printf "%s\t %s\t %s\t %s\n", tot_l, tot_b, tot_f, "total"
  78    }'
  79
  80analyze() {
  81  cc $QEMU_CFLAGS $QEMU_INCLUDES $CFLAGS  -E -o - "$@" | \
  82    awk "$awk1" | awk "$awk2"
  83  echo
  84}
  85
  86echo osdep.h:
  87analyze ../include/qemu/osdep.h
  88
  89echo qemu-common.h:
  90analyze  -include ../include/qemu/osdep.h ../include/qemu-common.h
  91
  92echo hw/hw.h:
  93analyze -include ../include/qemu/osdep.h ../include/hw/hw.h
  94
  95echo trace/generated-tracers.h:
  96analyze -include ../include/qemu/osdep.h trace/generated-tracers.h
  97
  98echo target/i386/cpu.h:
  99analyze -DNEED_CPU_H -I../target/i386 -Ii386-softmmu -include ../include/qemu/osdep.h ../target/i386/cpu.h
 100
 101echo hw/hw.h + NEED_CPU_H:
 102analyze -DNEED_CPU_H -I../target/i386 -Ii386-softmmu -include ../include/qemu/osdep.h ../include/hw/hw.h
 103