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This queue is for tickets about the Time-HiRes CPAN distribution.

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The Basics
Id:
57663
Status:
resolved
Priority:
Low/Low
Queue:

People
Owner:
Nobody in particular
Requestors:
dmuey [...] cpan.org
Cc:
AdminCc:

BugTracker
Severity:
Important
Broken in:
(no value)
Fixed in:
(no value)



Hello, This may be the intended behavior or unavaoidable due to system issues but I wanted to point it out just in case. The return of Time::HiRes::alarm() is inconsistent. In the example below there are 2 problems highlighted: 1) on some systems the remaining time is always 0, no matter what the alarm() is. 2) sometimes the remaining time is wildly inaccurate. [ -- Time::HiRes v1.9719 on 32 bit perl v5.8.9 -- ] Time::HiRes::alarm() always returns 0 no matter what alarm() was called before. a normal alarm() does return the whole seconds of the previous Time::HiRes::alarm() Updating to 1.9721 makes it behave more like the next section, which is a little more workable :) [ -- Time::HiRes v1.86 on 32 bit perl v5.8.8 -- ] Problem: the second says that of 5.5K seconds have passed: Note: The same commands but w/ normal alarm() set to Time::HiRes::alarm() get the same results (sans the granularity is gone of course plus the second command goes from 4.2K to 1.4K). multivac:~ dmuey$ perl -mTime::HiRes -le 'print Time::HiRes::alarm(1000);print Time::HiRes::alarm(100.1);print Time::HiRes::alarm(0);' 0 999.999936 100.099982 multivac:~ dmuey$ perl -mTime::HiRes -le 'print Time::HiRes::alarm(10000);print Time::HiRes::alarm(100.1);print Time::HiRes::alarm(0);' 0 4294.967235 100.099986 multivac:~ dmuey$ perl -mTime::HiRes -le 'print Time::HiRes::alarm(100);print Time::HiRes::alarm(5);print Time::HiRes::alarm(0);' 0 99.999933 4.999983 multivac:~ dmuey$
The return value from Time::HiRes::alarm() was indeed broken in older versions of Time::HiRes. This was fixed in Time::HiRes version 1.9721.


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