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spt: Fix hang in solo5_yield #582

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spt: Fix hang in solo5_yield #582

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6 changes: 6 additions & 0 deletions bindings/spt/net.c
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,12 @@ void solo5_yield(solo5_time_t deadline, solo5_handle_set_t *ready_set)
.tv_nsec = deadline % 1000000000ULL
}
};
/*
* Ensure that it.it_value is always non-zero, otherwise the following
* epoll_wait() will hang if there are no other descriptors in the waitset
* due to the timer never firing. See timefd_settime(2).
*/
it.it_value.tv_nsec |= 1;
/*
* On spt, given that Solo5 monotonic time is identical to CLOCK_MONOTONIC,
* we can just pass the deadline into the timerfd as an absolute timeout,
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