#! /bin/sh # # Copyright (C) 2016 Red Hat, Inc. # # Author: Paolo Bonzini <pbonzini@redhat.com> # # Print statistics about header file inclusions. # # The script has two modes of execution: # # 1) if invoked with a path on the command line (possibly # preceded by a "--" argument), it will run the analysis on # an existing build directory # # 2) otherwise, it will configure and builds QEMU itself in a # "+build" subdirectory which is left around when the script # exits. In this case the command line is passed directly to # "make" (typically used for a "-j" argument suitable for your # system). # # Inspired by a post by Markus Armbruster. case "x$1" in x--) shift cd "$1" || exit $? ;; x-* | x) mkdir -p +build cd +build test -f Makefile && make distclean ../configure make "$@" ;; *) cd "$1" || exit $? esac QEMU_CFLAGS=$(sed -n s/^QEMU_CFLAGS=//p config-host.mak) QEMU_INCLUDES=$(sed -n s/^QEMU_INCLUDES=//p config-host.mak | \ sed 's/$(SRC_PATH)/../g' ) CFLAGS=$(sed -n s/^CFLAGS=//p config-host.mak) grep_include() { find . -name "*.d" -exec grep -l "$@" {} + | wc -l } echo Found $(find . -name "*.d" | wc -l) object files echo $(grep_include -F 'include/qemu-common.h') files include qemu-common.h echo $(grep_include -F 'hw/hw.h') files include hw/hw.h echo $(grep_include 'target/[a-z0-9]*/cpu\.h') files include cpu.h echo $(grep_include -F 'qapi-types.h') files include qapi-types.h echo $(grep_include -F 'trace/generated-tracers.h') files include generated-tracers.h echo $(grep_include -F 'qapi/error.h') files include qapi/error.h echo $(grep_include -F 'qom/object.h') files include qom/object.h echo $(grep_include -F 'block/aio.h') files include block/aio.h echo $(grep_include -F 'exec/memory.h') files include exec/memory.h echo $(grep_include -F 'fpu/softfloat.h') files include fpu/softfloat.h echo $(grep_include -F 'qemu/bswap.h') files include qemu/bswap.h echo awk1=' /^# / { file = $3;next } NR>1 { bytes[file]+=length()+1; lines[file]++ } END { for(i in lines) print i,lines[i],bytes[i] }' awk2=' {tot_l+=$2;tot_b+=$3;tot_f++} /\/usr.*\/glib/ {glib_l+=$2;glib_b+=$3;glib_f++;next} /\/usr/ {sys_l+=$2;sys_b+=$3;sys_f++;next} {qemu_l+=$2;qemu_b+=$3;qemu_f++;next} END { printf "%s\t %s\t %s\t %s\n", "lines", "bytes", "files", "source" printf "%s\t %s\t %s\t %s\n", qemu_l, qemu_b, qemu_f, "QEMU" printf "%s\t %s\t %s\t %s\n", sys_l, sys_b, sys_f, "system" printf "%s\t %s\t %s\t %s\n", glib_l, glib_b, glib_f, "glib" printf "%s\t %s\t %s\t %s\n", tot_l, tot_b, tot_f, "total" }' analyze() { cc $QEMU_CFLAGS $QEMU_INCLUDES $CFLAGS -E -o - "$@" | \ awk "$awk1" | awk "$awk2" echo } echo osdep.h: analyze ../include/qemu/osdep.h echo qemu-common.h: analyze -include ../include/qemu/osdep.h ../include/qemu-common.h echo hw/hw.h: analyze -include ../include/qemu/osdep.h ../include/hw/hw.h echo trace/generated-tracers.h: analyze -include ../include/qemu/osdep.h trace/generated-tracers.h echo target/i386/cpu.h: analyze -DNEED_CPU_H -I../target/i386 -Ii386-softmmu -include ../include/qemu/osdep.h ../target/i386/cpu.h echo hw/hw.h + NEED_CPU_H: analyze -DNEED_CPU_H -I../target/i386 -Ii386-softmmu -include ../include/qemu/osdep.h ../include/hw/hw.h