mpv/osdep/poll_wrapper.h

#pragma once

#include <poll.h>
#include <stdint.h>

// Behaves like poll(3) but works for device files on macOS.
// Only supports POLLIN and POLLOUT.
int polldev(struct pollfd fds[], nfds_t nfds, int timeout);

// Generic polling wrapper. It will try and use higher resolution
// polling (ppoll) if available.
int mp_poll(struct pollfd *fds, int nfds, int64_t timeout_ns);
osdep: add poll shim for macOS This implements a poll-compatible interface, backed by select on macOS, suitable for polling on device files - which are not supported by macOS's implementation of poll. This is a (long-standing) bug in macOS, so hopefully we can eventually remove this shim. 2017-12-09 14:41:09 +00:00			`#pragma once`

			`#include <poll.h>`
vo: use mp_poll wrapper in wait_events when applicable On linux, several platforms poll for events over a fd. This has ms accuracy, but mpv's timer is in ns now so lots of precision is lost. We can use an mp_poll wrapper to use ppoll instead which takes a timespec directly with nanosecond precision. On systems without ppoll this falls back to old poll behavior. On wayland, we don't actually use this because ppoll completely messes up the event loop for some unknown reason. 2023-09-18 03:27:12 +00:00			`#include <stdint.h>`
osdep: add poll shim for macOS This implements a poll-compatible interface, backed by select on macOS, suitable for polling on device files - which are not supported by macOS's implementation of poll. This is a (long-standing) bug in macOS, so hopefully we can eventually remove this shim. 2017-12-09 14:41:09 +00:00
			`// Behaves like poll(3) but works for device files on macOS.`
osdep: remove erroneous POLLERR emulation first of all, POLLERR is supposed to be ignored in `.events` and only returned in `.revents`. secondly select()'s exceptfds does not have a 1:1 correspondence with POLLERR. thankfully, the only caller of this function (in terminal-unix) never set the POLLERR flag so the errorfds were unused anyways. so go ahead and remove it entirely instead of pretending we can emulate something that's not possible. 2023-06-27 06:25:17 +00:00			`// Only supports POLLIN and POLLOUT.`
osdep: add poll shim for macOS This implements a poll-compatible interface, backed by select on macOS, suitable for polling on device files - which are not supported by macOS's implementation of poll. This is a (long-standing) bug in macOS, so hopefully we can eventually remove this shim. 2017-12-09 14:41:09 +00:00			`int polldev(struct pollfd fds[], nfds_t nfds, int timeout);`
vo: use mp_poll wrapper in wait_events when applicable On linux, several platforms poll for events over a fd. This has ms accuracy, but mpv's timer is in ns now so lots of precision is lost. We can use an mp_poll wrapper to use ppoll instead which takes a timespec directly with nanosecond precision. On systems without ppoll this falls back to old poll behavior. On wayland, we don't actually use this because ppoll completely messes up the event loop for some unknown reason. 2023-09-18 03:27:12 +00:00
			`// Generic polling wrapper. It will try and use higher resolution`
			`// polling (ppoll) if available.`
			`int mp_poll(struct pollfd *fds, int nfds, int64_t timeout_ns);`