#!/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