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... read()调用的时间
# bpftrace -e 'kprobe:vfs_read { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns[comm] = hist(nsecs - @start[tid]); delete(@start[tid]); }'
Attaching 2 probes...
[...]
@ns[snmp-pass]:
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Best way to read a large file into a byte array in C#?
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12 Answers
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How to detect total available/free disk space on the iPhone/iPad device?
...pace on the iPhone/iPad device programmatically.
Currently I'm using the NSFileManager to detect the disk space. Following is the snippet of the code which does the job for me:
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How to detect when facebook's FB.init is complete
The old JS SDK had a function called FB.ensureInit. The new SDK does not seem to have such function... how can I ensure that I do not make api calls until it is fully initiated?
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How can I do string interpolation in JavaScript?
Consider this code:
19 Answers
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Does Python have a string 'contains' substring method?
I'm looking for a string.contains or string.indexof method in Python.
10 Answers
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Elegant Python function to convert CamelCase to snake_case?
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30 Answers
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How to round the minute of a datetime object
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17 Answers
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How can I time a code segment for testing performance with Pythons timeit?
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8 Answers
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Spring AOP vs AspectJ
... is best used for application specific tasks such as security, logging, transactions, etc. as it uses custom Java5 annotations as a framework. However, AspectJ seems to be more friendly design-patterns wise.
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