parser.sh

#!/bin/bash

# Given a folder of source *.cpp files, compiles each file and profiles heap and stack usage with massif.
# Results are added to a "massif" directory in the pwd

# a) create two subdirectories titled 'generated' and 'massif' in the cwd
# b) iterate over each file inside the directory specified by the first argument
# c) for each file, run `g++` on it and store the executable in /generated
# d) for each file in /generated, run `massif` on it and store the output in \massif
# e) for each file in /massif, extract the relevant info via regex and store everything in $2
# f) done

generated="${PWD}/generated"
massif="${PWD}/massif"

rm -rf ${generated}; mkdir -v ${generated}
rm -rf ${massif}; mkdir -v ${massif}

echo ""

rm -rf $2
touch $2

for file in $1/*.cpp
do
        echo "Building ${file}..."

        name_ext=${file##*/}
        name=${name_ext%.*}
        executable="${generated}/${name}"

        g++ ${file} -std=c++17 -isystem ~/etl-18.1.3/include -o ${executable}
        chmod u+x ${executable}
done

echo ""

for file in ${generated}/*
do
        echo "Running massif on ${file}..."

        name_ext=${file##*/}
        name=${name_ext%.*}

        valgrind --tool=massif --massif-out-file="${massif}/${name}.txt" -q --time-unit=B --stacks=yes ${file}
done

regex=$'time=([0-9]+)
mem_heap_B=([0-9]+)
mem_heap_extra_B=([0-9]+)
mem_stacks_B=([0-9]+)'

format_row() {
        local s=$1 regex=$2
        while [[ $s =~ $regex ]]
        do
                t="${BASH_REMATCH[1]}"
                heap="${BASH_REMATCH[2]}"
                stack="${BASH_REMATCH[4]}"

                echo "${t}, ${heap}, ${stack}"

                s=${s#*"${BASH_REMATCH[4]}"}
        done
}

for file in ${massif}/*
do
        echo "Parsing ${file}..."

        echo $file >> $2
        echo "time, heap, stack" >> $2

        text=$(<${file})
        format_row "$text" "$regex" >> "$2"
        echo "" >> $2
done


echo ""
echo "Done"