Rate counter: Difference between revisions
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Fix the sort order, since I changed the language header name...
(Cleaned up description somewhat.) |
m (Fix the sort order, since I changed the language header name...) |
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Be aware of the precision and accuracy limitations of your timing mechanisms, and document them if you can.
=={{header|UNIX Shell}}==▼
This code stores the number of times the program '''task''' can complete in 20 seconds. It is two parts.▼
Part 1: file "foo.sh"▼
This script spins, executing '''task''' as many times as possible.▼
<lang bash>▼
#!/bin/bash▼
while : ; do▼
task && echo >> .fc▼
done▼
</lang>▼
Part 2:▼
This script runs '''foo.sh''' in the background, and checks the rate count file every five seconds. After four such checks, twenty seconds will have elapsed.▼
<lang bash>▼
./foo.sh &▼
sleep 5▼
mv .fc .fc2 2>/dev/null▼
wc -l .fc2 2>/dev/null▼
rm .fc2▼
sleep 5▼
mv .fc .fc2 2>/dev/null▼
wc -l .fc2 2>/dev/null▼
sleep 5▼
mv .fc .fc2 2>/dev/null▼
wc -l .fc2 2>/dev/null▼
sleep 5▼
killall foo.sh▼
wc -l .fc 2>/dev/null▼
rm .fc▼
</lang>▼
=={{header|C}}==
Line 209 ⟶ 175:
return 0;
}
▲</lang>
▲=={{header|UNIX Shell}}==
▲This code stores the number of times the program '''task''' can complete in 20 seconds. It is two parts.
▲Part 1: file "foo.sh"
▲This script spins, executing '''task''' as many times as possible.
▲<lang bash>
▲#!/bin/bash
▲while : ; do
▲task && echo >> .fc
▲done
▲</lang>
▲Part 2:
▲This script runs '''foo.sh''' in the background, and checks the rate count file every five seconds. After four such checks, twenty seconds will have elapsed.
▲<lang bash>
▲./foo.sh &
▲sleep 5
▲mv .fc .fc2 2>/dev/null
▲wc -l .fc2 2>/dev/null
▲rm .fc2
▲sleep 5
▲mv .fc .fc2 2>/dev/null
▲wc -l .fc2 2>/dev/null
▲sleep 5
▲mv .fc .fc2 2>/dev/null
▲wc -l .fc2 2>/dev/null
▲sleep 5
▲killall foo.sh
▲wc -l .fc 2>/dev/null
▲rm .fc
</lang>
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