testing/bin/docker-entrypoint.sh

#!/bin/bash -e

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if ! [ "$1" == "hello" ] || ! [ "$2" == "world" ]; then
    echo "Incorrect arguments passed through:" "$@"
    exit 1
fi

originalLdPreloadSetting=$3
jemallocDisabled=$4

if [ "$jemallocDisabled" == "true" ] && ! [ "$originalLdPreloadSetting" == "$LD_PRELOAD" ]; then
    echo "jemalloc was disabled; expected LD_PRELOAD to be '$originalLdPreloadSetting' but was '$LD_PRELOAD'"
    exit 1
fi

# We expect jemalloc to be available in any of these paths
JEMALLOC_PATH="/usr/lib/$(uname -m)-linux-gnu/libjemalloc.so"
JEMALLOC_FALLBACK="/usr/lib/x86_64-linux-gnu/libjemalloc.so"

if [ "$jemallocDisabled" == "false" ] && [ "$originalLdPreloadSetting" == "$LD_PRELOAD" ]; then
    if [ ! -f "$JEMALLOC_PATH" ] && [ ! -f "$JEMALLOC_FALLBACK" ]; then
      echo "jemalloc was enabled but it was not found in the system. LD_PRELOAD is unchanged and glibc will be used instead."
      exit 0
    fi
    echo "jemalloc was enabled; expected LD_PRELOAD to be different than '$originalLdPreloadSetting'."
    exit 1
fi