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|
#!/bin/bash
if [[ $# -le 1 ]]; then
echo "Usage: $0 <executable> [<addresses>] REFS..."
exit 1
fi
target="$1"
shift
addresses=""
if [[ -e "$1" ]]; then
addresses="$1"
shift
fi
# path to "us"
# readlink -f, but more portable:
dirname=$(perl -e 'use Cwd "abs_path";print abs_path(shift)' "$(dirname "$0")")
# https://stackoverflow.com/a/2358432/472927
{
# compile all refs
pushd "$dirname" > /dev/null
# if the user has some local changes, preserve them
nstashed=$(git stash list | wc -l)
echo "==> Stashing any local modifications"
git stash --keep-index > /dev/null
popstash() {
# https://stackoverflow.com/q/24520791/472927
if [[ "$(git stash list | wc -l)" -ne "$nstashed" ]]; then
echo "==> Restoring stashed state"
git stash pop > /dev/null
fi
}
# if the user has added stuff to the index, abort
if ! git diff-index --quiet HEAD --; then
echo "Refusing to overwrite outstanding git changes"
popstash
exit 2
fi
current=$(git symbolic-ref --short HEAD)
for ref in "$@"; do
echo "==> Compiling $ref"
git checkout -q "$ref"
commit=$(git rev-parse HEAD)
fn="target/release/addr2line-$commit"
if [[ ! -e "$fn" ]]; then
cargo build --release --example addr2line
cp target/release/examples/addr2line "$fn"
fi
if [[ "$ref" != "$commit" ]]; then
ln -sfn "addr2line-$commit" target/release/addr2line-"$ref"
fi
done
git checkout -q "$current"
popstash
popd > /dev/null
# get us some addresses to look up
if [[ -z "$addresses" ]]; then
echo "==> Looking for benchmarking addresses (this may take a while)"
addresses=$(mktemp tmp.XXXXXXXXXX)
objdump -C -x --disassemble -l "$target" \
| grep -P '0[048]:' \
| awk '{print $1}' \
| sed 's/:$//' \
> "$addresses"
echo " -> Addresses stored in $addresses; you should re-use it next time"
fi
run() {
func="$1"
name="$2"
cmd="$3"
args="$4"
printf "%s\t%s\t" "$name" "$func"
if [[ "$cmd" =~ llvm-symbolizer ]]; then
/usr/bin/time -f '%e\t%M' "$cmd" $args -obj="$target" < "$addresses" 2>&1 >/dev/null
else
/usr/bin/time -f '%e\t%M' "$cmd" $args -e "$target" < "$addresses" 2>&1 >/dev/null
fi
}
# run without functions
log1=$(mktemp tmp.XXXXXXXXXX)
echo "==> Benchmarking"
run nofunc binutils addr2line >> "$log1"
#run nofunc elfutils eu-addr2line >> "$log1"
run nofunc llvm-sym llvm-symbolizer -functions=none >> "$log1"
for ref in "$@"; do
run nofunc "$ref" "$dirname/target/release/addr2line-$ref" >> "$log1"
done
cat "$log1" | column -t
# run with functions
log2=$(mktemp tmp.XXXXXXXXXX)
echo "==> Benchmarking with -f"
run func binutils addr2line "-f -i" >> "$log2"
#run func elfutils eu-addr2line "-f -i" >> "$log2"
run func llvm-sym llvm-symbolizer "-functions=linkage -demangle=0" >> "$log2"
for ref in "$@"; do
run func "$ref" "$dirname/target/release/addr2line-$ref" "-f -i" >> "$log2"
done
cat "$log2" | column -t
cat "$log2" >> "$log1"; rm "$log2"
echo "==> Plotting"
Rscript --no-readline --no-restore --no-save "$dirname/bench.plot.r" < "$log1"
echo "==> Cleaning up"
rm "$log1"
exit 0
}
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