Adding upstream version 1.7.2+ds.upstream/1.7.2+ds

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 363 insertions, 0 deletions

diff --git a/tests/benchmarks/benchmark_helpers.sh b/tests/benchmarks/benchmark_helpers.sh
new file mode 100644
index 0000000..14dbb43
--- /dev/null
+++ b/tests/benchmarks/benchmark_helpers.sh
@@ -0,0 +1,363 @@
+# variables that benchmark tests can set
+#
+
+set -eo pipefail
+
+#
+# command-line parsing
+#
+
+usage() { echo "usage: $(basename "$0") [--cli <path>] [--baseline-cli <path>] [--output-style <style>] [--json <path>]"; }
+
+NEXT=
+BASELINE_CLI=
+TEST_CLI="git"
+JSON=
+SHOW_OUTPUT=
+
+if [ "$CI" != "" ]; then
+	OUTPUT_STYLE="color"
+else
+	OUTPUT_STYLE="auto"
+fi
+
+#
+# parse the arguments to the outer script that's including us; these are arguments that
+# the `benchmark.sh` passes (or that a user could specify when running an individual test)
+#
+
+for a in "$@"; do
+	if [ "${NEXT}" = "cli" ]; then
+		TEST_CLI="${a}"
+		NEXT=
+	elif [ "${NEXT}" = "baseline-cli" ]; then
+		BASELINE_CLI="${a}"
+		NEXT=
+	elif [ "${NEXT}" = "output-style" ]; then
+		OUTPUT_STYLE="${a}"
+		NEXT=
+	elif [ "${NEXT}" = "json" ]; then
+		JSON="${a}"
+		NEXT=
+	elif [ "${a}" = "-c" ] || [ "${a}" = "--cli" ]; then
+		NEXT="cli"
+	elif [[ "${a}" == "-c"* ]]; then
+		TEST_CLI="${a/-c/}"
+	elif [ "${a}" = "-b" ] || [ "${a}" = "--baseline-cli" ]; then
+		NEXT="baseline-cli"
+	elif [[ "${a}" == "-b"* ]]; then
+		BASELINE_CLI="${a/-b/}"
+	elif [ "${a}" == "--output-style" ]; then
+		NEXT="output-style"
+	elif [ "${a}" = "-j" ] || [ "${a}" = "--json" ]; then
+		NEXT="json"
+	elif [[ "${a}" == "-j"* ]]; then
+		JSON="${a}"
+	elif [ "${a}" = "--show-output" ]; then
+		SHOW_OUTPUT=1
+		OUTPUT_STYLE=
+	else
+                echo "$(basename "$0"): unknown option: ${a}" 1>&2
+		usage 1>&2
+		exit 1
+	fi
+done
+
+if [ "${NEXT}" != "" ]; then
+	echo "$(basename "$0"): option requires a value: --${NEXT}" 1>&2
+        usage 1>&2
+        exit 1
+fi
+
+fullpath() {
+	FULLPATH="${1}"
+	if [[ "$(uname -s)" == "MINGW"* ]]; then FULLPATH="$(cygpath -u "${1}")"; fi
+
+	if [[ "${FULLPATH}" != *"/"* ]]; then
+                FULLPATH="$(which "${FULLPATH}")"
+                if [ "$?" != "0" ]; then exit 1; fi
+	else
+		FULLPATH="$(cd "$(dirname "${FULLPATH}")" && pwd)/$(basename "${FULLPATH}")"
+	fi
+
+	if [[ "$(uname -s)" == "MINGW"* ]]; then FULLPATH="$(cygpath -w "${FULLPATH}")"; fi
+	echo "${FULLPATH}"
+}
+
+resources_dir() {
+	cd "$(dirname "$0")/../resources" && pwd
+}
+
+temp_dir() {
+	if [ "$(uname -s)" == "Darwin" ]; then
+		mktemp -dt libgit2_bench
+	else
+		mktemp -dt libgit2_bench.XXXXXXX
+	fi
+}
+
+create_preparescript() {
+	# add some functions for users to use in preparation
+	cat >> "${SANDBOX_DIR}/prepare.sh" << EOF
+	set -e
+
+	SANDBOX_DIR="${SANDBOX_DIR}"
+	RESOURCES_DIR="$(resources_dir)"
+
+	create_text_file() {
+		FILENAME="\${1}"
+		SIZE="\${2}"
+
+		if [ "\${FILENAME}" = "" ]; then
+			echo "usage: create_text_file <name> [size]" 1>&2
+			exit 1
+		fi
+
+		if [ "\${SIZE}" = "" ]; then
+			SIZE="1024"
+		fi
+
+		if [[ "\$(uname -s)" == "MINGW"* ]]; then
+			EOL="\r\n"
+			EOL_LEN="2"
+			CONTENTS="This is a reproducible text file. (With Unix line endings.)\n"
+			CONTENTS_LEN="60"
+		else
+			EOL="\n"
+			EOL_LEN="1"
+			CONTENTS="This is a reproducible text file. (With DOS line endings.)\r\n"
+			CONTENTS_LEN="60"
+		fi
+
+		rm -f "\${FILENAME:?}"
+		touch "\${FILENAME}"
+
+		if [ "\${SIZE}" -ge "\$((\${CONTENTS_LEN} + \${EOL_LEN}))" ]; then
+			SIZE="\$((\${SIZE} - \${CONTENTS_LEN}))"
+			COUNT="\$(((\${SIZE} - \${EOL_LEN}) / \${CONTENTS_LEN}))"
+
+			if [ "\${SIZE}" -gt "\${EOL_LEN}" ]; then
+				dd if="\${FILENAME}" of="\${FILENAME}" bs="\${CONTENTS_LEN}" seek=1 count="\${COUNT}" 2>/dev/null
+			fi
+
+			SIZE="\$((\${SIZE} - (\${COUNT} * \${CONTENTS_LEN})))"
+                fi
+
+		while [ "\${SIZE}" -gt "\${EOL_LEN}" ]; do
+			echo -ne "." >> "\${FILENAME}"
+			SIZE="\$((\${SIZE} - 1))"
+		done
+
+		if [ "\${SIZE}" = "\${EOL_LEN}" ]; then
+			echo -ne "\${EOL}" >> "\${FILENAME}"
+			SIZE="\$((\${SIZE} - \${EOL_LEN}))"
+		else
+			while [ "\${SIZE}" -gt "0" ]; do
+				echo -ne "." >> "\${FILENAME}"
+				SIZE="\$((\${SIZE} - 1))"
+			done
+		fi
+	}
+
+	create_random_file() {
+		FILENAME="\${1}"
+		SIZE="\${2}"
+
+		if [ "\${FILENAME}" = "" ]; then
+			echo "usage: create_random_file <name> [size]" 1>&2
+			exit 1
+		fi
+
+		if [ "\${SIZE}" = "" ]; then
+			SIZE="1024"
+		fi
+
+		dd if="/dev/urandom" of="\${FILENAME}" bs="\${SIZE}" count=1 2>/dev/null
+	}
+
+	flush_disk_cache() {
+		if [ "\$(uname -s)" = "Darwin" ]; then
+			sync && sudo purge
+		elif [ "\$(uname -s)" = "Linux" ]; then
+			sync && echo 3 | sudo tee /proc/sys/vm/drop_caches >/dev/null
+		elif [[ "\$(uname -s)" == "MINGW"* ]]; then
+			PurgeStandbyList
+		fi
+	}
+
+	sandbox() {
+		RESOURCE="\${1}"
+
+		if [ "\${RESOURCE}" = "" ]; then
+			echo "usage: sandbox <path>" 1>&2
+			exit 1
+		fi
+
+		if [ ! -d "\${RESOURCES_DIR}/\${RESOURCE}" ]; then
+			echo "sandbox: the resource \"\${RESOURCE}\" does not exist"
+			exit 1
+		fi
+
+		rm -rf "\${SANDBOX_DIR:?}/\${RESOURCE}"
+		cp -R "\${RESOURCES_DIR}/\${RESOURCE}" "\${SANDBOX_DIR}/"
+	}
+
+	sandbox_repo() {
+		RESOURCE="\${1}"
+
+		sandbox "\${RESOURCE}"
+
+		if [ -d "\${SANDBOX_DIR}/\${RESOURCE}/.gitted" ]; then
+			mv "\${SANDBOX_DIR}/\${RESOURCE}/.gitted" "\${SANDBOX_DIR}/\${RESOURCE}/.git";
+		fi
+		if [ -f "\${SANDBOX_DIR}/\${RESOURCE}/gitattributes" ]; then
+			mv "\${SANDBOX_DIR}/\${RESOURCE}/gitattributes" "\${SANDBOX_DIR}/\${RESOURCE}/.gitattributes";
+		fi
+		if [ -f "\${SANDBOX_DIR}/\${RESOURCE}/gitignore" ]; then
+			mv "\${SANDBOX_DIR}/\${RESOURCE}/gitignore" "\${SANDBOX_DIR}/\${RESOURCE}/.gitignore";
+		fi
+	}
+
+	cd "\${SANDBOX_DIR}"
+EOF
+
+	if [ "${PREPARE}" != "" ]; then
+		echo "" >> "${SANDBOX_DIR}/prepare.sh"
+		echo "${PREPARE}" >> "${SANDBOX_DIR}/prepare.sh"
+	fi
+
+	echo "${SANDBOX_DIR}/prepare.sh"
+}
+
+create_runscript() {
+	SCRIPT_NAME="${1}"; shift
+	CLI_PATH="${1}"; shift
+
+	if [[ "${CHDIR}" = "/"* ]]; then
+		START_DIR="${CHDIR}"
+	elif [ "${CHDIR}" != "" ]; then
+		START_DIR="${SANDBOX_DIR}/${CHDIR}"
+	else
+		START_DIR="${SANDBOX_DIR}"
+	fi
+
+	# our run script starts by chdir'ing to the sandbox or repository directory
+	echo -n "cd \"${START_DIR}\" && \"${CLI_PATH}\"" >> "${SANDBOX_DIR}/${SCRIPT_NAME}.sh"
+
+	for a in "$@"; do
+		echo -n " \"${a}\"" >> "${SANDBOX_DIR}/${SCRIPT_NAME}.sh"
+	done
+
+	echo "${SANDBOX_DIR}/${SCRIPT_NAME}.sh"
+}
+
+gitbench_usage() { echo "usage: gitbench command..."; }
+
+#
+# this is the function that the outer script calls to actually do the sandboxing and
+# invocation of hyperfine.
+#
+gitbench() {
+	NEXT=
+
+	# this test should run the given command in preparation of the tests
+	# this preparation script will be run _after_ repository creation and
+	# _before_ flushing the disk cache
+	PREPARE=
+
+	# this test should run within the given directory; this is a
+	# relative path beneath the sandbox directory.
+	CHDIR=
+
+	# this test should run `n` warmups
+	WARMUP=0
+
+	if [ "$*" = "" ]; then
+		gitbench_usage 1>&2
+		exit 1
+	fi
+
+	for a in "$@"; do
+		if [ "${NEXT}" = "warmup" ]; then
+			WARMUP="${a}"
+			NEXT=
+		elif [ "${NEXT}" = "prepare" ]; then
+			PREPARE="${a}"
+			NEXT=
+		elif [ "${NEXT}" = "chdir" ]; then
+			CHDIR="${a}"
+			NEXT=
+		elif [ "${a}" = "--warmup" ]; then
+			NEXT="warmup"
+		elif [ "${a}" = "--prepare" ]; then
+			NEXT="prepare"
+		elif [ "${a}" = "--chdir" ]; then
+			NEXT="chdir"
+		elif [[ "${a}" == "--"* ]]; then
+			echo "unknown argument: \"${a}\"" 1>&2
+			gitbench_usage 1>&2
+			exit 1
+		else
+			break
+		fi
+
+		shift
+	done
+
+	if [ "${NEXT}" != "" ]; then
+		echo "$(basename "$0"): option requires a value: --${NEXT}" 1>&2
+		gitbench_usage 1>&2
+		exit 1
+	fi
+
+	# sanity check
+
+	for a in "${SANDBOX[@]}"; do
+		if [ ! -d "$(resources_dir)/${a}" ]; then
+			echo "$0: no resource '${a}' found" 1>&2
+			exit 1
+		fi
+	done
+
+	if [ "$REPOSITORY" != "" ]; then
+		if [ ! -d "$(resources_dir)/${REPOSITORY}" ]; then
+			echo "$0: no repository resource '${REPOSITORY}' found" 1>&2
+			exit 1
+		fi
+	fi
+
+	# set up our sandboxing
+
+	SANDBOX_DIR="$(temp_dir)"
+
+	if [ "${BASELINE_CLI}" != "" ]; then
+		BASELINE_CLI_PATH=$(fullpath "${BASELINE_CLI}")
+		BASELINE_RUN_SCRIPT=$(create_runscript "baseline" "${BASELINE_CLI_PATH}" "$@")
+	fi
+	TEST_CLI_PATH=$(fullpath "${TEST_CLI}")
+	TEST_RUN_SCRIPT=$(create_runscript "test" "${TEST_CLI_PATH}" "$@")
+
+	PREPARE_SCRIPT="$(create_preparescript)"
+	ARGUMENTS=("--prepare" "bash ${PREPARE_SCRIPT}" "--warmup" "${WARMUP}")
+
+	if [ "${OUTPUT_STYLE}" != "" ]; then
+		ARGUMENTS+=("--style" "${OUTPUT_STYLE}")
+	fi
+
+	if [ "${SHOW_OUTPUT}" != "" ]; then
+		ARGUMENTS+=("--show-output")
+	fi
+
+	if [ "$JSON" != "" ]; then
+		ARGUMENTS+=("--export-json" "${JSON}")
+	fi
+
+	if [ "${BASELINE_CLI}" != "" ]; then
+		ARGUMENTS+=("-n" "${BASELINE_CLI} $*" "bash ${BASELINE_RUN_SCRIPT}")
+	fi
+
+	ARGUMENTS+=("-n" "${TEST_CLI} $*" "bash ${TEST_RUN_SCRIPT}")
+
+	hyperfine "${ARGUMENTS[@]}"
+	rm -rf "${SANDBOX_DIR:?}"
+}