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 'hw/hw.h') files include hw/hw.h 50echo $(grep_include 'target/[a-z0-9]*/cpu\.h') files include cpu.h 51echo $(grep_include -F 'qapi-types.h') files include qapi-types.h 52echo $(grep_include -F 'trace/generated-tracers.h') files include generated-tracers.h 53echo $(grep_include -F 'qapi/error.h') files include qapi/error.h 54echo $(grep_include -F 'qom/object.h') files include qom/object.h 55echo $(grep_include -F 'block/aio.h') files include block/aio.h 56echo $(grep_include -F 'exec/memory.h') files include exec/memory.h 57echo $(grep_include -F 'fpu/softfloat.h') files include fpu/softfloat.h 58echo $(grep_include -F 'qemu/bswap.h') files include qemu/bswap.h 59echo 60 61awk1=' 62 /^# / { file = $3;next } 63 NR>1 { bytes[file]+=length()+1; lines[file]++ } 64 END { for(i in lines) print i,lines[i],bytes[i] }' 65 66awk2=' 67 {tot_l+=$2;tot_b+=$3;tot_f++} 68 /\/usr.*\/glib/ {glib_l+=$2;glib_b+=$3;glib_f++;next} 69 /\/usr/ {sys_l+=$2;sys_b+=$3;sys_f++;next} 70 {qemu_l+=$2;qemu_b+=$3;qemu_f++;next} 71 END { 72 printf "%s\t %s\t %s\t %s\n", "lines", "bytes", "files", "source" 73 printf "%s\t %s\t %s\t %s\n", qemu_l, qemu_b, qemu_f, "QEMU" 74 printf "%s\t %s\t %s\t %s\n", sys_l, sys_b, sys_f, "system" 75 printf "%s\t %s\t %s\t %s\n", glib_l, glib_b, glib_f, "glib" 76 printf "%s\t %s\t %s\t %s\n", tot_l, tot_b, tot_f, "total" 77 }' 78 79analyze() { 80 cc $QEMU_CFLAGS $QEMU_INCLUDES $CFLAGS -E -o - "$@" | \ 81 awk "$awk1" | awk "$awk2" 82 echo 83} 84 85echo osdep.h: 86analyze ../include/qemu/osdep.h 87 88echo hw/hw.h: 89analyze -include ../include/qemu/osdep.h ../include/hw/hw.h 90 91echo trace/generated-tracers.h: 92analyze -include ../include/qemu/osdep.h trace/generated-tracers.h 93 94echo target/i386/cpu.h: 95analyze -DCOMPILING_PER_TARGET -I../target/i386 -Ii386-softmmu -include ../include/qemu/osdep.h ../target/i386/cpu.h 96 97echo hw/hw.h + COMPILING_PER_TARGET: 98analyze -DCOMPILING_PER_TARGET -I../target/i386 -Ii386-softmmu -include ../include/qemu/osdep.h ../include/hw/hw.h 99