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Commit Graph

260 Commits

Author SHA1 Message Date
Calvin Rose
3b189eab64 Fix #1321, poll event loop CPU usage issue
A stream may have a fiber attached for memory management purposes, but
not actually be waiting on anything. Be more seletive with poll, which
is not edge-triggered, to not poll for readiness on these streams.
2023-10-29 11:34:21 -05:00
Calvin Rose
609b629c22 Add support for atomic loads in Janet's atomic abstraction. 2023-10-21 10:40:57 -05:00
Calvin Rose
4139e426fe Refine interface for janet's new event loop.
Infer the current root fiber and force user to
allocate state for async events.
2023-10-08 18:25:46 -05:00
Calvin Rose
990f6352e0 Allow for unregistered streams w/ kqueue. 2023-10-08 17:21:42 -05:00
Calvin Rose
894aaef267 Mac please 2023-10-08 15:42:54 -05:00
Calvin Rose
e209e54ffe bsds are very strict on C standards
No labels before declarations.
2023-10-08 15:37:23 -05:00
Calvin Rose
7511eadaa7 Update code for freebsd and ENODEV on stream register 2023-10-08 15:26:02 -05:00
Calvin Rose
6c4906605a Some bsds return ENODEV for devices like /dev/null 2023-10-08 15:09:53 -05:00
Calvin Rose
8a9be9d837 Make sure posted events are read from non-blocking socket. 2023-10-08 13:46:24 -05:00
Calvin Rose
b72098cc71 remove extra decref 2023-10-08 13:24:42 -05:00
Calvin Rose
defe60e08b Handle refcounts in posted events. 2023-10-08 13:18:08 -05:00
Calvin Rose
7f852b8af4 Handle refcounts in posted events. 2023-10-08 13:14:36 -05:00
Calvin Rose
555e0c0b85 Try to capture more events in kqueue. 2023-10-08 10:52:27 -05:00
Calvin Rose
f1111c135b Work on kq 2023-10-07 21:32:20 -05:00
Calvin Rose
3905e92965 kqueue mirror master branch implementation a bit better. 2023-10-07 12:53:59 -07:00
Calvin Rose
1418ada38f Remove duplicate code in kqueue event handling. 2023-10-07 12:40:43 -07:00
Calvin Rose
9256a66b76 Update ev.c for removing msvc warnings 2023-10-07 12:11:14 -07:00
Calvin Rose
e8c013a778 Remove some extra fiber state and use a flag. 2023-10-07 12:07:05 -07:00
Calvin Rose
fea8242ea7 Reuse overlapped overhead on windows for something useful. 2023-10-07 11:25:20 -07:00
Calvin Rose
7bfb17c209 Lots of work to make iocp work again.
Big issue with IOCP vs. poll variants is that the overlapped
structures have a longer lifetime than intermediate state needed
for epoll. One cannot free overlapped structures after closing a
handle/socket, like one can do with any intermediate state when using
readiness-based IO.
2023-10-07 11:18:43 -07:00
Calvin Rose
e7e4341e70 Add EV_EOF for kqueue. 2023-10-06 17:39:52 -05:00
Calvin Rose
d07f01d7cb Update kqueue 2023-10-06 01:33:51 -05:00
Calvin Rose
a3b129845b Quick blind take on getting kqueue similar to poll and poll. 2023-10-06 00:48:05 -05:00
Calvin Rose
0ff8f58be8 Simpler async model that is better suited to epoll 2023-10-06 00:37:19 -05:00
Calvin Rose
bf2af1051f Missing && 2023-10-04 23:29:54 -05:00
Calvin Rose
b6e3020d4c Attempt 2 to fix bsd compilation errors. 2023-10-04 23:27:56 -05:00
Calvin Rose
8f516a1e28 Address some bsd issues. 2023-10-04 23:24:40 -05:00
Calvin Rose
5f2e287efd Make epoll event loop use EPOLLET and not reregister file descriptors.
This results in fewer system calls and presumably more effcient code. It
also brings the epoll (and kqueue) code more in line with how the
windows IOCP code works, incidentally.
2023-10-04 22:35:04 -05:00
Calvin Rose
2ea90334a3 Remove some checking code for iocp events.
Be more permissive abouts events we get.
2023-10-02 23:25:26 -07:00
Calvin Rose
eea8aa555f Revert dccb60b to address #1299
This commit was to address issues with a use after free error in the
windows event loop, but the erroneous code was later reworked.
2023-10-03 00:14:25 -05:00
Calvin Rose
af7ed4322e Get rid of req for 64 bit atomics 2023-10-01 10:27:51 -05:00
Calvin Rose
7cdd7cf6eb Expose atomic refcounts to be easier to port.
This code was duplicate in a few places.
2023-10-01 10:09:23 -05:00
Calvin Rose
d12464fc0e Make poll work by going back to array of listeners for gc keeping. 2023-09-26 23:02:06 -05:00
Calvin Rose
a96971c8a7 More work on epoll implementation. 2023-09-26 12:05:06 -05:00
Calvin Rose
f6f769503a Fix up ev.c to pass tests. 2023-09-26 11:11:29 -05:00
Calvin Rose
82917ac6e3 Kqueue fix. 2023-09-25 19:17:51 -07:00
Calvin Rose
a6ffafb1a2 Patches to kqueue implementation. 2023-09-25 19:07:18 -07:00
Calvin Rose
fb8c529f2e Partial work updating epoll reimplentation. 2023-09-25 18:52:15 -07:00
Calvin Rose
1ee98e1e66 Get IOCP reworked event loop passing tests. 2023-09-25 15:19:39 -07:00
Calvin Rose
81f35f5dd1 Redo state management for Janet listeners.
Make more use of the built in GC code for abstracts to
be sure things are more correct. Issue before was streams could
be freed before IOCP events arrived.
2023-09-25 00:43:36 -07:00
Calvin Rose
1b402347cd Work on debugging issue with server spawning. 2023-09-24 18:15:58 -07:00
Calvin Rose
dccb60ba35 Ignore IOCP where the event failed to deque. 2023-09-24 12:53:06 -07:00
Calvin Rose
471b6f9966 Add TOCLOSE back. 2023-09-24 12:28:35 -07:00
Calvin Rose
e6e9bd8147 Redo async connect code to be moved out of ev.c.
Async connect is different than write.
2023-09-24 10:08:40 -07:00
Calvin Rose
4ecadfabf4 Fix atomics - warnings on windows 2023-08-24 08:00:50 -05:00
Calvin Rose
ffd79c6097 Allow multiple simultaneous interrupts cleanly for #1262
Instead of setting a flag, each interrupt increments an atomic
counter. When the interrupt is finally handled, either by scheduling
code to run on the event loop or executing some out of band code, the
user must now decrement the interrupt counter with
janet_interpreter_interrupt_handled. While this counter is non-zero, the
event loop will not enter the interpreter. This changes the API a bit but
makes it possible and easy to handle signals without race conditions
or scheduler hacks, as the runtime can ensure that high priority code is
run before re-entering possibly blocking interpreter code again.

Also included is a new function janet_schedule_soon, which prepends to
the task queue instead of appending, allowing interrupt handler to skip
ahead of all other scheduled fibers.

Lastly, also update meson default options to include the
interpreter_interrupt code and raise a runtime error if os/sigaction
is used with interpreter interrupt but that build option is not enabled.
2023-08-24 07:38:53 -05:00
Calvin Rose
ca4c1e4259 Try to use atomics inside signal handler for ref count. 2023-08-20 08:49:49 -05:00
Calvin Rose
f45571033c Add os/sigaction for signal handling.
Also improve interrupts to work better with busy loops
and signals.
2023-08-19 13:26:29 -05:00
Calvin Rose
cd36f1ef5f Distinguish between threaded channels and non-threaded when marshalling.
Threaded channels _can_ be marshalled, just not for communication
between threads. This is a special case since the same abstract type
is used for both threaded and non-threaded channels.
2023-08-16 14:26:52 -05:00
Calvin Rose
8df7364319 Quick fix for discussion #1253
Protect against garbage collection during connect.
2023-08-13 12:00:54 -05:00