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* mq_timedsend, mq_timedreceive: add time64, decouple 32-bit time_tRich Felker2019-07-282-0/+34
| | | | | | | | | | | time64 syscall is used only if it's the only one defined for the arch, or if the requested absolute timeout does not fit in 32 bits. on current 32-bit archs where time_t is a 32-bit type, this makes it statically unreachable. on 64-bit archs, there is no change to the code after preprocessing. on current 32-bit archs, the timeout is passed via an intermediate copy to remove the assumption that time_t is a 32-bit type.
* use restrict everywhere it's required by c99 and/or posix 2008Rich Felker2012-09-062-2/+2
| | | | | | | | to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
* fix longstanding missing static in mq_notify (namespace pollution)Rich Felker2012-04-291-1/+1
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* const correctness in mq_notifyRich Felker2011-06-251-1/+1
| | | | why did gcc allow this invalid assignment to compile in the first place?
* mq names without leading / have impl-def behavior; allowing them is easierRich Felker2011-06-072-9/+2
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* mq send/recv functions are cancellation pointsRich Felker2011-06-072-2/+2
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* implement mq_notifyRich Felker2011-06-071-2/+65
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* add support for POSIX message queues, except mq_notifyRich Felker2011-06-0710-0/+99