summaryrefslogtreecommitdiff
path: root/t/perf/perf-lib.sh
blob: a8c9574291b87d9bb1906a9d61faa9b157178b76 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
# Performance testing framework.  Each perf script starts much like
# a normal test script, except it sources this library instead of
# test-lib.sh.  See t/perf/README for documentation.
#
# Copyright (c) 2011 Thomas Rast
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see http://www.gnu.org/licenses/ .
 
# do the --tee work early; it otherwise confuses our careful
# GIT_BUILD_DIR mangling
case "$GIT_TEST_TEE_STARTED, $* " in
done,*)
	# do not redirect again
	;;
*' --tee '*|*' --va'*)
	mkdir -p test-results
	BASE=test-results/$(basename "$0" .sh)
	(GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
	 echo $? > $BASE.exit) | tee $BASE.out
	test "$(cat $BASE.exit)" = 0
	exit
	;;
esac
 
TEST_DIRECTORY=$(pwd)/..
TEST_OUTPUT_DIRECTORY=$(pwd)
if test -z "$GIT_TEST_INSTALLED"; then
	perf_results_prefix=
else
	perf_results_prefix=$(printf "%s" "${GIT_TEST_INSTALLED%/bin-wrappers}" | tr -c "[a-zA-Z0-9]" "[_*]")"."
	# make the tested dir absolute
	GIT_TEST_INSTALLED=$(cd "$GIT_TEST_INSTALLED" && pwd)
fi
 
TEST_NO_CREATE_REPO=t
TEST_NO_MALLOC_CHECK=t
 
. ../test-lib.sh
 
# Variables from test-lib that are normally internal to the tests; we
# need to export them for test_perf subshells
export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP
 
perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results
mkdir -p "$perf_results_dir"
rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests
 
if test -z "$GIT_PERF_REPEAT_COUNT"; then
	GIT_PERF_REPEAT_COUNT=3
fi
die_if_build_dir_not_repo () {
	if ! ( cd "$TEST_DIRECTORY/.." &&
		    git rev-parse --build-dir >/dev/null 2>&1 ); then
		error "No $1 defined, and your build directory is not a repo"
	fi
}
 
if test -z "$GIT_PERF_REPO"; then
	die_if_build_dir_not_repo '$GIT_PERF_REPO'
	GIT_PERF_REPO=$TEST_DIRECTORY/..
fi
if test -z "$GIT_PERF_LARGE_REPO"; then
	die_if_build_dir_not_repo '$GIT_PERF_LARGE_REPO'
	GIT_PERF_LARGE_REPO=$TEST_DIRECTORY/..
fi
 
test_perf_create_repo_from () {
	test "$#" = 2 ||
	error "bug in the test script: not 2 parameters to test-create-repo"
	repo="$1"
	source="$2"
	source_git=$source/$(cd "$source" && git rev-parse --git-dir)
	mkdir -p "$repo/.git"
	(
		cd "$repo/.git" &&
		{ cp -Rl "$source_git/objects" . 2>/dev/null ||
			cp -R "$source_git/objects" .; } &&
		for stuff in "$source_git"/*; do
			case "$stuff" in
				*/objects|*/hooks|*/config)
					;;
				*)
					cp -R "$stuff" . || break
					;;
			esac
		done &&
		cd .. &&
		git init -q &&
		mv .git/hooks .git/hooks-disabled 2>/dev/null
	) || error "failed to copy repository '$source' to '$repo'"
}
 
# call at least one of these to establish an appropriately-sized repository
test_perf_default_repo () {
	test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_REPO"
}
test_perf_large_repo () {
	if test "$GIT_PERF_LARGE_REPO" = "$GIT_BUILD_DIR"; then
		echo "warning: \$GIT_PERF_LARGE_REPO is \$GIT_BUILD_DIR." >&2
		echo "warning: This will work, but may not be a sufficiently large repo" >&2
		echo "warning: for representative measurements." >&2
	fi
	test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_LARGE_REPO"
}
test_checkout_worktree () {
	git checkout-index -u -a ||
	error "git checkout-index failed"
}
 
# Performance tests should never fail.  If they do, stop immediately
immediate=t
 
test_run_perf_ () {
	test_cleanup=:
	test_export_="test_cleanup"
	export test_cleanup test_export_
	/usr/bin/time -f "%E %U %S" -o test_time.$i "$SHELL" -c '
. '"$TEST_DIRECTORY"/test-lib-functions.sh'
test_export () {
	[ $# != 0 ] || return 0
	test_export_="$test_export_\\|$1"
	shift
	test_export "$@"
}
'"$1"'
ret=$?
set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export '"'&'"'/p" >test_vars
exit $ret' >&3 2>&4
	eval_ret=$?
 
	if test $eval_ret = 0 || test -n "$expecting_failure"
	then
		test_eval_ "$test_cleanup"
		. ./test_vars || error "failed to load updated environment"
	fi
	if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
		echo ""
	fi
	return "$eval_ret"
}
 
 
test_perf () {
	test_start_
	test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
	test "$#" = 2 ||
	error "bug in the test script: not 2 or 3 parameters to test-expect-success"
	export test_prereq
	if ! test_skip "$@"
	then
		base=$(basename "$0" .sh)
		echo "$test_count" >>"$perf_results_dir"/$base.subtests
		echo "$1" >"$perf_results_dir"/$base.$test_count.descr
		if test -z "$verbose"; then
			printf "%s" "perf $test_count - $1:"
		else
			echo "perf $test_count - $1:"
		fi
		for i in $(test_seq 1 $GIT_PERF_REPEAT_COUNT); do
			say >&3 "running: $2"
			if test_run_perf_ "$2"
			then
				if test -z "$verbose"; then
					printf " %s" "$i"
				else
					echo "* timing run $i/$GIT_PERF_REPEAT_COUNT:"
				fi
			else
				test -z "$verbose" && echo
				test_failure_ "$@"
				break
			fi
		done
		if test -z "$verbose"; then
			echo " ok"
		else
			test_ok_ "$1"
		fi
		base="$perf_results_dir"/"$perf_results_prefix$(basename "$0" .sh)"."$test_count"
		"$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".times
	fi
	test_finish_
}
 
# We extend test_done to print timings at the end (./run disables this
# and does it after running everything)
test_at_end_hook_ () {
	if test -z "$GIT_PERF_AGGREGATING_LATER"; then
		( cd "$TEST_DIRECTORY"/perf && ./aggregate.perl $(basename "$0") )
	fi
}
 
test_export () {
	export "$@"
}