mirror of
https://github.com/reactos/ccache.git
synced 2025-02-01 17:23:33 +00:00
118 lines
2.0 KiB
Bash
Executable File
118 lines
2.0 KiB
Bash
Executable File
#! /bin/sh
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set -e
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create_src() {
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n=$1
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i=0
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while [ $i -lt $n ]; do
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file=$i.cc
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cat <<EOF >$file
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#include <algorithm>
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#include <deque>
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#include <iostream>
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#include <list>
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#include <map>
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#include <set>
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#include <sstream>
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#include <string>
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#include <vector>
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int var$i;
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EOF
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i=$(($i + 1))
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done
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}
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compile() {
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n=$1
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compiler=$2
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i=0
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objdir=objs
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rm -rf $objdir
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mkdir -p $objdir
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while [ $i -lt $n ]; do
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echo -n .
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$compiler -c $i.cc -O2 -o $objdir/$i.o
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i=$(($i + 1))
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done
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echo
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}
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now() {
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perl -e 'use Time::HiRes qw(time); print time'
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}
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elapsed() {
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perl -e 'use Time::HiRes qw(time); printf("%.3f\n", time - $ARGV[0])' $1
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}
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stat() {
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desc=$1
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time=$2
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ref_time=$3
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perc=$(perl -e "print 100 * $time / $ref_time")
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factor=$(perl -e "print $ref_time / $time")
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printf "%-36s %5.2f s (%6.2f %%) (%5.2f x)\n" "$desc:" $time $perc $factor
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}
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###############################################################################
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if [ -n "$CXX" ]; then
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cxx="$CXX"
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else
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cxx=/usr/bin/c++
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fi
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ccache=../ccache
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tmpdir=tmpdir.$$
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CCACHE_DIR=.ccache
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export CCACHE_DIR
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CCACHE_NODIRECT=1
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export CCACHE_NODIRECT
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rm -rf $tmpdir
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mkdir $tmpdir
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cd $tmpdir
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if [ "$#" -gt 0 ]; then
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n=$1
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else
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n=30
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fi
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create_src $n
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echo "Without ccache:"
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t0=$(now)
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compile $n $cxx
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t_wo=$(elapsed $t0)
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echo "With ccache, no direct, cache miss:"
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t0=$(now)
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compile $n "$ccache $cxx"
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t_p_m=$(elapsed $t0)
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echo "With ccache, no direct, cache hit:"
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t0=$(now)
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compile $n "$ccache $cxx"
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t_p_h=$(elapsed $t0)
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unset CCACHE_NODIRECT
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rm -rf $CCACHE_DIR
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echo "With ccache, direct, cache miss:"
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t0=$(now)
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compile $n "$ccache $cxx"
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t_d_m=$(elapsed $t0)
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echo "With ccache, direct, cache hit:"
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t0=$(now)
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compile $n "$ccache $cxx"
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t_d_h=$(elapsed $t0)
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echo
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stat "Without ccache" $t_wo $t_wo
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stat "With ccache, no direct, cache miss" $t_p_m $t_wo
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stat "With ccache, no direct, cache hit" $t_p_h $t_wo
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stat "With ccache, direct, cache miss" $t_d_m $t_wo
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stat "With ccache, direct, cache hit" $t_d_h $t_wo
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