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https://issues.apache.org/jira/browse/QPID-5487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kim van der Riet resolved QPID-5487.
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Resolution: Fixed
Now uses 3 calls to rand() as follows:
{code}
((uint64_t)::rand() << 33) | ((uint64_t)::rand() << 2) | (::rand() & 0x3)
{code}
with the shift values and mask being calculated from the value of {{RAND_MAX}}
(0x7fffffff, 31 bits).
> [linearstore] Replace use of /dev/urandom with c random generator calls
> -----------------------------------------------------------------------
>
> Key: QPID-5487
> URL: https://issues.apache.org/jira/browse/QPID-5487
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Reporter: Kim van der Riet
> Assignee: Kim van der Riet
> Priority: Minor
>
> The use of /dev/urandom for random numbers is considered unfriendly to other
> systems on a machine that might depend upon this source.
> The current use-case is for Journal serial numbers; the randomness of the C
> rand() call should be good enough, but it requires a 64-bit number. Construct
> this using several smaller numbers from rand() or random()
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