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x11/libinput/files/patch-shims_sys_timerfd.h
| Property | Old Value | New Value |
|---|---|---|
| fbsd:nokeywords | null | yes \ No newline at end of property |
| svn:eol-style | null | native \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| --- shims/sys/timerfd.h.orig 2017-02-04 10:53:33 UTC | |||||
| +++ shims/sys/timerfd.h | |||||
| @@ -0,0 +1,88 @@ | |||||
| +#include <sys/param.h> | |||||
| +#include <sys/event.h> | |||||
| +#include <errno.h> | |||||
| +#include <fcntl.h> | |||||
| +#include <stdio.h> | |||||
| +#include <time.h> | |||||
| + | |||||
| +#define TFD_CLOEXEC O_CLOEXEC | |||||
| +#define TFD_NONBLOCK O_NONBLOCK | |||||
| +#define TFD_TIMER_ABSTIME (1 << 0) | |||||
| + | |||||
| +#define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) | |||||
| +#define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) | |||||
| +#define timespeccmp(tvp, uvp, cmp) \ | |||||
| + (((tvp)->tv_sec == (uvp)->tv_sec) ? \ | |||||
| + ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \ | |||||
| + ((tvp)->tv_sec cmp (uvp)->tv_sec)) | |||||
| +#define timespecsub(vvp, uvp) \ | |||||
| + do { \ | |||||
| + (vvp)->tv_sec -= (uvp)->tv_sec; \ | |||||
| + (vvp)->tv_nsec -= (uvp)->tv_nsec; \ | |||||
| + if ((vvp)->tv_nsec < 0) { \ | |||||
| + (vvp)->tv_sec--; \ | |||||
| + (vvp)->tv_nsec += 1000000000; \ | |||||
| + } \ | |||||
| + } while (0) | |||||
| + | |||||
| +/* Minimal kqueue timer period */ | |||||
| +#define EVTIMER_MIN_DATA 0 | |||||
| + | |||||
| +#ifdef NOTE_USECONDS | |||||
| +#define EVTIMER_FFLAGS NOTE_USECONDS | |||||
| +#define tstokq(tvp) ((tvp)->tv_sec*1000000 + ((tvp)->tv_nsec+500)/1000) | |||||
| +#else | |||||
| +#define EVTIMER_FFLAGS 0 | |||||
| +#define tstokq(tvp) ((tvp)->tv_sec*1000 + ((tvp)->tv_nsec+500000)/1000000) | |||||
| +#endif | |||||
| + | |||||
| +static inline int | |||||
| +timerfd_create(clockid_t clock_id, int flags) | |||||
| +{ | |||||
| + /* Only CLOCK_MONOTONIC is supported */ | |||||
| + if (clock_id != CLOCK_MONOTONIC) { | |||||
| + printf("timerfd_create: unsupported clock_id\n"); | |||||
| + errno = EINVAL; | |||||
| + return (-1); | |||||
| + } | |||||
| + /* | |||||
| + * Supply read() & close() calls to timerfd with valid file descriptor. | |||||
| + * Fill it with zeroes as libinput discards data read from timerfd. | |||||
| + */ | |||||
| + return (open("/dev/zero", O_RDONLY | flags)); | |||||
| +} | |||||
| + | |||||
| +/* | |||||
| + * timerfd_settime() requires properly initialized variable libinput | |||||
| + * of type `struct libinput *` in caller context. | |||||
| + */ | |||||
| +#define timerfd_settime(tfd, flags, new_value, old_value) ({ \ | |||||
| + struct kevent ev_[3]; \ | |||||
| + struct timespec expire_, now_; \ | |||||
| + typeof(((struct kevent *)0)->data) data_ = EVTIMER_MIN_DATA; \ | |||||
| + int nchanges_ = 2; \ | |||||
| + int ret_; \ | |||||
| + /* Sanity checks for supported parameters */ \ | |||||
| + if ((old_value) != NULL) \ | |||||
| + log_error(libinput, "Returning of timer is not supported\n"); \ | |||||
| + if (timespecisset(&(new_value)->it_interval)) \ | |||||
| + log_error(libinput, "Periodic timers are not supported\n"); \ | |||||
| + /* Drop pending EVFILT_TIMER events if any */ \ | |||||
| + EV_SET(&ev_[0], (tfd), EVFILT_TIMER, EV_ADD, 0, 0, 0); \ | |||||
| + EV_SET(&ev_[1], (tfd), EVFILT_TIMER, EV_DELETE, 0, 0, 0); \ | |||||
| + if (timespecisset(&(new_value)->it_value)) { \ | |||||
| + timespecclear(&now_); \ | |||||
| + if ((flags) & TFD_TIMER_ABSTIME) \ | |||||
| + clock_gettime(CLOCK_MONOTONIC, &now_); \ | |||||
| + expire_ = (new_value)->it_value; \ | |||||
| + if (timespeccmp(&expire_, &now_, >)) { \ | |||||
| + timespecsub(&expire_, &now_); \ | |||||
| + data_ = MAX(tstokq(&expire_), EVTIMER_MIN_DATA);\ | |||||
| + } \ | |||||
| + EV_SET(&ev_[2], (tfd), EVFILT_TIMER, EV_ADD | EV_ONESHOT, \ | |||||
| + EVTIMER_FFLAGS, data_, libinput->timer.source); \ | |||||
| + nchanges_++; \ | |||||
| + } \ | |||||
| + ret_ = kevent(libinput->epoll_fd, ev_, nchanges_, NULL, 0, NULL); \ | |||||
| + ret_; \ | |||||
| +}) | |||||