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Rename the 'private' field to 'priv' in order to avoid using a C++ keyword
Signed-off-by: Felix Fietkau <nbd@nbd.name>
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So far, the only way to implement periodic interval timers was to use
one-shot uloop_timeout timers which are rearmed within their completion
callback immediately on expiration.
While simple, this approach is not very precise and interval lengths will
slowly drift over time, due to callback execution overhead, scheduling
granularity etc.
In order to make uloop provide stable and precise interval timer
capabilities, this commit introduces a new `uloop_interval` structure
along with the new related `uloop_interval_set()`, `uloop_interval_cancel()`
and `uloop_interval_remaining()` api functions.
Periodic timers are implemented using the timerfd facility an Linux and
kqueue EVFILT_TIMER events on macOS/BSD.
The Lua binding has been updated to include support for the new timer type
as well.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- support reading the next timeout in order to determine the poll timeout
- add a callback for fd add/delete/update
Signed-off-by: Felix Fietkau <nbd@nbd.name>
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Fix a race condition when do_sigchld, uloop_cancelled were set just
before epoll_wait(timeout=-1), resulting the loop stuck in the syscall
without noticing the events just happened
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
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It hasn't fixed the reported race condition and it introduced some new
issues.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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