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#!/bin/sh
# Measure memory usage of a minimal client using a small configuration
# Currently hardwired to ccm-psk and suite-b, may be expanded later
#
# Use different build options for measuring executable size and memory usage,
# since for memory we want debug information.
#
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -eu
CONFIG_H='include/mbedtls/config.h'
CLIENT='mini_client'
CFLAGS_EXEC='-fno-asynchronous-unwind-tables -Wl,--gc-section -ffunction-sections -fdata-sections'
CFLAGS_MEM=-g3
if [ -r $CONFIG_H ]; then :; else
echo "$CONFIG_H not found" >&2
exit 1
fi
if grep -i cmake Makefile >/dev/null; then
echo "Not compatible with CMake" >&2
exit 1
fi
if [ $( uname ) != Linux ]; then
echo "Only work on Linux" >&2
exit 1
fi
if git status | grep -F $CONFIG_H >/dev/null 2>&1; then
echo "config.h not clean" >&2
exit 1
fi
# make measurements with one configuration
# usage: do_config <name> <unset-list> <server-args>
do_config()
{
NAME=$1
UNSET_LIST=$2
SERVER_ARGS=$3
echo ""
echo "config-$NAME:"
cp configs/config-$NAME.h $CONFIG_H
scripts/config.py unset MBEDTLS_SSL_SRV_C
for FLAG in $UNSET_LIST; do
scripts/config.py unset $FLAG
done
grep -F SSL_MAX_CONTENT_LEN $CONFIG_H || echo 'SSL_MAX_CONTENT_LEN=16384'
printf " Executable size... "
make clean
CFLAGS=$CFLAGS_EXEC make OFLAGS=-Os lib >/dev/null 2>&1
cd programs
CFLAGS=$CFLAGS_EXEC make OFLAGS=-Os ssl/$CLIENT >/dev/null
strip ssl/$CLIENT
stat -c '%s' ssl/$CLIENT
cd ..
printf " Peak ram usage... "
make clean
CFLAGS=$CFLAGS_MEM make OFLAGS=-Os lib >/dev/null 2>&1
cd programs
CFLAGS=$CFLAGS_MEM make OFLAGS=-Os ssl/$CLIENT >/dev/null
cd ..
./ssl_server2 $SERVER_ARGS >/dev/null &
SRV_PID=$!
sleep 1;
if valgrind --tool=massif --stacks=yes programs/ssl/$CLIENT >/dev/null 2>&1
then
FAILED=0
else
echo "client failed" >&2
FAILED=1
fi
kill $SRV_PID
wait $SRV_PID
scripts/massif_max.pl massif.out.*
mv massif.out.* massif-$NAME.$$
}
# preparation
CONFIG_BAK=${CONFIG_H}.bak
cp $CONFIG_H $CONFIG_BAK
rm -f massif.out.*
printf "building server... "
make clean
make lib >/dev/null 2>&1
(cd programs && make ssl/ssl_server2) >/dev/null
cp programs/ssl/ssl_server2 .
echo "done"
# actual measurements
do_config "ccm-psk-tls1_2" \
"" \
"psk=000102030405060708090A0B0C0D0E0F"
do_config "suite-b" \
"MBEDTLS_BASE64_C MBEDTLS_PEM_PARSE_C MBEDTLS_CERTS_C" \
""
# cleanup
mv $CONFIG_BAK $CONFIG_H
make clean
rm ssl_server2
exit $FAILED
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