1 files changed, 112 insertions, 0 deletions
diff --git a/vendor/addr2line/benchmark.sh b/vendor/addr2line/benchmark.sh
new file mode 100755
index 0000000..ca4c4f6
--- /dev/null
+++ b/vendor/addr2line/benchmark.sh
@@ -0,0 +1,112 @@
+#!/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
+}