1 if [ -z "${__stopwatch_sh_loaded}" ]
3 __stopwatch_sh_loaded=yes
5 __stopwatch_sh_VERSION="Stopwatch v0.1"
6 __stopwatch_sh_DESCRIPTION="Stopwatch implementation supporting multiple tagged timers"
7 __stopwatch_sh_COPYRIGHT=$( cat <<"END_OF_COPYRIGHT"
9 Copyright (c) 2000-2012, CyberLeo
12 Redistribution and use in source and binary forms, with or without
13 modification, are permitted provided that the following conditions are met:
15 * Redistributions of the source code must retain the above copyright
16 notice, this list of conditions, and the following disclaimer.
17 * Redistributions in binary form must reproduce the above copyright
18 notice, this list of conditions, and the following disclaimer in the
19 documentation and/or other materials provided with the distribution.
20 * Neither the name of the organization nor the names of its contributors
21 may be used to endorse or promote products derived from this software
22 without specific prior written permission.
24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
30 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 HOWEVER CAUSED AND ON ANY THEORY OF LIABILTY, WHETHER IN CONTRACT, STRICT
32 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
33 OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 kvs="$(mktemp -t ".stopwatch.XXXXXXXX")"
40 trap "rm -f '${kvs}'; exit" exit hup int term kill
46 ${__stopwatch_sh_VERSION}
47 ${__stopwatch_sh_DESCRIPTION}
49 ${__stopwatch_sh_COPYRIGHT}
51 Usage: stopwatch <tag> <start|lap|stop|reset>
53 Simple bourne shell based stopwatch
54 Requires 'kvs' and the id 'stopwatch' therein
55 so make sure you set 'kvs' before sourcing this script if necessary.
57 After loading, the following commands are available:
62 'Lap' a stopwatch (emit timer value without stopping)
65 Stop a stopwatch; can be resumed later with 'start'
68 Reset a stopwatch back to zero
71 Internal functions available:
73 stopwatch_humany_duration <usec>
74 Transform an integer number of microseconds into a human-readable string
75 (Ex: 3d14h10m3.223s or 7m10.013s )
77 stopwatch_set_message_callback <command>
78 Register a callback to format event messages emitted when a stopwatch is
79 commanded. The callback will receive the following parameters:
80 <command> - one of: starting, started, lap, get, stopping, stopped, reset
81 <tag> - stopwatch name
82 <time> - the current time on the stopwatch, if any
83 <delta> - the time since the last change or inquiry (for lap and stopping)
84 The commands are as follows:
85 starting - called start while stopped
86 started - called start while running
87 lap - called lap while running
88 get - called lap while stopped
89 stopping - called stop while running
90 stopped - called stop while stopped
100 echo $(( $(date +%s%N) / 1000 ))
105 "${_root}/lib/sh/usec" || echo $(( $(date +%s) * 1000000 ))
109 echo "Unsupported platform: $(uname -s)" >&2
114 # Format stopwatch event messages (Can be overridden; see
115 # 'stopwatch_set_message_callback')
116 _stopwatch_message_callback() {
119 time="${3:+$(stopwatch_humany_duration ${3})}"
120 delta="${4:+$(stopwatch_humany_duration ${4})}"
123 starting) printf "'%s' starts%s.\n" "${tag}" "${time:+ at ${time}}";;
124 started) printf "'%s' is already running.\n" "${tag}" ;;
125 lap) printf "'%s' is running: %s%s\n" "${tag}" "${time}" "${delta:+ (${delta} since last lap)}" ;;
126 get) printf "'%s' is stopped: %s\n" "${tag}" "${time}" ;;
127 stopping) printf "'%s' stops at %s%s.\n" "${tag}" "${time}" "${delta:+ (${delta} since last start)}" ;;
128 stopped) printf "'%s' is stopped%s.\n" "${tag}" "${time:+ at ${time}}" ;;
129 reset) printf "'%s' is reset to zero.\n" "${tag}" ;;
130 *) printf "No message for command %s\n" "${command}" ;;
134 # Set the message callback
135 stopwatch_set_message_callback() {
136 _stopwatch_registered_message_callback="${1:-_stopwatch_message_callback}"
137 kvs_set stopwatch message_callback "${_stopwatch_registered_message_callback}"
140 # Fetch the message callback; default if unset
141 stopwatch_get_message_callback() {
142 [ "${_stopwatch_registered_message_callback}" ] ||
143 _stopwatch_registered_message_callback="$(kvs_get stopwatch messsage_callback)"
144 if [ "${_stopwatch_registered_message_callback}" ]
146 echo "${_stopwatch_registered_message_callback}"
148 _stopwatch_registered_message_callback=_stopwatch_message_callback
149 echo _stopwatch_message_callback
153 # Try and format a passed integer number of seconds into something more
154 # easily parseable by a human (like 6m10s or something)
155 stopwatch_humany_duration() {
156 local usec secs mins hurs days
157 [ "${1}" -a "$(echo "${1}" | tr -Cd '0-9')" = "${1}" ] || return 255
158 usec=$(( ${1} % 1000000 ))
159 secs=$(( ${1} / 1000000 ))
162 [ "${secs}" -lt 60 ] || {
163 mins=$(( ${secs} / 60 ))
164 secs=$(( ${secs} % 60 ))
166 [ "${mins}" -lt 60 ] || {
167 hurs=$(( ${mins} / 60 ))
168 mins=$(( ${mins} % 60 ))
170 [ "${mins}" -gt 0 ] || mins=""
171 [ "${hurs}" -lt 24 ] || {
172 days=$(( ${hurs} / 24 ))
173 hurs=$(( ${hurs} % 24 ))
175 [ "${hurs}" -gt 0 ] || hurs=""
177 printf "%s%s%s%s.%03ds" "${days:+${days}d}" "${hurs:+${hurs}h}" "${mins:+${mins}m}" "${secs}" "$(( ${usec} / 1000 ))"
180 # Start a named stopwatch, but do nothing if the named stopwatch is already
183 name="${1:-stopwatch}"
184 [ "${nao}" ] || nao="$(_stopwatch_usec)"
185 # Is the stopwatch running?
186 if kvs_has_key stopwatch "${name}"
188 eval "$(stopwatch_get_message_callback) started ${name}"
190 # start the stopwatch
191 accum="$(kvs_get stopwatch "${name}_accumulator")"
192 kvs_set stopwatch "${name}" "${nao}"
193 [ "${accum}" ] && kvs_set stopwatch "${name}_laptime" "${nao}"
194 eval "$(stopwatch_get_message_callback) starting ${name} ${accum}"
198 # 'Lap' the named stopwatch: print out a line indicating how long the named
199 # stopwatch has been running, but do not stop nor reset the stopwatch.
201 name="${1:-stopwatch}"
202 [ "${nao}" ] || nao="$(_stopwatch_usec)"
203 # Is the stopwatch running?
204 if kvs_has_key stopwatch "${name}"
206 # emit a line indicating how long it has been running
207 start="$(kvs_get stopwatch "${name}")"
208 accum="$(kvs_get stopwatch "${name}_accumulator")"
209 laptm="$(kvs_get stopwatch "${name}_laptime")"
210 delta="$(( ${nao} - ${start} ))"
211 [ "${laptm}" ] && laptm="$(( ${nao} - ${laptm} ))"
212 [ "${accum}" ] && delta="$(( ${delta} + ${accum} ))"
213 kvs_set stopwatch "${name}_laptime" "${nao}"
214 eval "$(stopwatch_get_message_callback) lap ${name} ${delta} ${laptm}"
216 accum="$(kvs_get stopwatch "${name}_accumulator")"
217 eval "$(stopwatch_get_message_callback) get ${name} ${accum}"
221 # Stop the named stopwatch and print out a line indicating how long it had
222 # been running up until that point; do not reset the stopwatch.
224 name="${1:-stopwatch}"
225 [ "${nao}" ] || nao="$(_stopwatch_usec)"
226 if kvs_has_key stopwatch "${name}"
228 start="$(kvs_get stopwatch "${name}")"
229 accum="$(kvs_get stopwatch "${name}_accumulator")"
230 delta="$(( ${nao} - ${start} ))"
232 [ "${accum}" ] && delta="$(( ${delta} + ${accum} ))"
233 kvs_set stopwatch "${name}_accumulator" "${delta}"
234 kvs_unset stopwatch "${name}"
235 kvs_unset stopwatch "${name}_laptime"
236 eval "$(stopwatch_get_message_callback) stopping ${name} ${delta} ${diffs}"
238 accum="$(kvs_get stopwatch "${name}_accumulator")"
239 eval "$(stopwatch_get_message_callback) stopped ${name} ${accum}"
243 # Reset the named stopwatch back to zero.
245 name="${1:-stopwatch}"
246 [ "${nao}" ] || nao="$(_stopwatch_usec)"
247 kvs_unset stopwatch "${name}"
248 kvs_unset stopwatch "${name}_accumulator"
249 kvs_unset stopwatch "${name}_laptime"
250 eval "$(stopwatch_get_message_callback) reset ${name}"
254 [ "${1}" -a "${2}" ] || stopwatch_help;
255 nao="$(_stopwatch_usec)"
257 [Ss][Tt][Aa][Rr][Tt]) stopwatch_start "${1}" ;;
258 [Ll][Aa][Pp]) stopwatch_lap "${1}" ;;
259 [Ss][Tt][Oo][Pp]) stopwatch_stop "${1}" ;;
260 [Rr][Ee][Ss][Ee][Tt]) stopwatch_reset "${1}" ;;