Perform absolute sleeps
Kenny Levinsen
parent
1dfefe2b51
commit
601e15080e
132
main.c
132
main.c
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@ -11,46 +11,59 @@
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#include <wayland-client.h>
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#include <time.h>
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#include <poll.h>
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#include <signal.h>
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#include "wlr-gamma-control-unstable-v1-client-protocol.h"
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#include "color_math.h"
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#if defined(SPEEDRUN)
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static inline int wait_adjust(int wait) {
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fprintf(stderr, "wait in termina: %d seconds\n", wait / 1000);
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return wait / 1000;
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static time_t start = 0;
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static void init_time(time_t *tloc) {
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(void)tloc;
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tzset();
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struct timespec realtime;
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clock_gettime(CLOCK_REALTIME, &realtime);
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start = realtime.tv_sec;
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}
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static time_t get_time_sec(time_t *tloc) {
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static time_t start = 0;
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static time_t monostart = 0;
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if (start == 0) {
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start = time(tloc);
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}
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struct timespec monotime;
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clock_gettime(CLOCK_MONOTONIC, &monotime);
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time_t now = monotime.tv_sec * 1000 + monotime.tv_nsec / 1000000;
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if (monostart == 0) {
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monostart = now;
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}
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now = now - monostart + start;
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(void)tloc;
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struct timespec realtime;
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clock_gettime(CLOCK_REALTIME, &realtime);
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time_t now = start + ((realtime.tv_sec - start) * 1000 + realtime.tv_nsec / 1000000);
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struct tm tm;
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localtime_r(&now, &tm);
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fprintf(stderr, "time in termina: %02d:%02d:%02d\n", tm.tm_hour, tm.tm_min, tm.tm_sec);
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return now;
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}
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static int set_timer(timer_t timer, time_t deadline) {
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time_t diff = deadline - start;
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struct itimerspec timerspec = {{0}, {0}};
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timerspec.it_value.tv_sec = start + diff / 1000;
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timerspec.it_value.tv_nsec = (diff % 1000) * 1000000;
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struct tm tm;
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localtime_r(&deadline, &tm);
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fprintf(stderr, "sleeping until %02d:%02d:%02d\n", tm.tm_hour, tm.tm_min, tm.tm_sec);
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return timer_settime(timer, TIMER_ABSTIME, &timerspec, NULL);
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}
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#else
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static inline int wait_adjust(int wait) {
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return wait;
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static inline void init_time(time_t *tloc) {
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(void)tloc;
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tzset();
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}
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static inline time_t get_time_sec(time_t *tloc) {
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return time(tloc);
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}
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static int set_timer(timer_t timer, time_t deadline) {
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struct itimerspec timerspec = {{0}, {0}};
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timerspec.it_value.tv_sec = deadline;
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return timer_settime(timer, TIMER_ABSTIME, &timerspec, NULL);
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}
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#endif
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static const int LONG_SLEEP_MS = 600 * 1000;
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static const int MAX_SLEEP_S = 1800;
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static const int MIN_SLEEP_S = 10;
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static const int LONG_SLEEP = 600;
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enum state {
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HIGH_TEMP,
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@ -76,10 +89,13 @@ struct context {
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double longitude;
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double latitude;
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timer_t timer;
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time_t dawn;
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time_t sunrise;
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time_t sunset;
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time_t dusk;
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int cur_temp;
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enum state state;
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bool new_output;
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@ -317,28 +333,28 @@ static void update_temperature(struct context *ctx, time_t now) {
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switch (ctx->state) {
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start:
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case HIGH_TEMP:
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if (now <= ctx->sunset && now > ctx->sunrise) {
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if (now < ctx->sunset && now >= ctx->sunrise) {
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temp = ctx->high_temp;
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break;
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}
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ctx->state = ANIMATING_TO_LOW;
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// fallthrough
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case ANIMATING_TO_LOW:
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if (now > ctx->dawn && now <= ctx->dusk) {
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if (now >= ctx->dawn && now < ctx->dusk) {
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temp = interpolate_temperature(now, ctx->sunset, ctx->dusk, ctx->high_temp, ctx->low_temp);
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break;
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}
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ctx->state = LOW_TEMP;
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// fallthrough
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case LOW_TEMP:
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if (now > ctx->dusk || now <= ctx->dawn) {
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if (now >= ctx->dusk || now < ctx->dawn) {
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temp = ctx->low_temp;
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break;
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}
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ctx->state = ANIMATING_TO_HIGH;
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// fallthrough
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case ANIMATING_TO_HIGH:
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if (now <= ctx->sunrise) {
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if (now < ctx->sunrise) {
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temp = interpolate_temperature(now, ctx->dawn, ctx->sunrise, ctx->low_temp, ctx->high_temp);
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break;
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}
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@ -359,11 +375,11 @@ start:
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static int increments(int temp_diff, int duration) {
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assert(temp_diff > 0);
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int time = duration * 25000 / temp_diff;
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return time > LONG_SLEEP_MS ? LONG_SLEEP_MS : time;
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int time = duration * 25 / temp_diff;
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return time > LONG_SLEEP ? LONG_SLEEP : time;
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}
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static int time_to_next_event(struct context *ctx, time_t now) {
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static void update_timer(struct context *ctx, time_t now) {
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time_t deadline;
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switch (ctx->state) {
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case HIGH_TEMP:
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@ -376,34 +392,31 @@ static int time_to_next_event(struct context *ctx, time_t now) {
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}
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break;
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case ANIMATING_TO_HIGH:
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return increments(ctx->high_temp - ctx->low_temp, ctx->sunrise - ctx->dawn);
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deadline = now + increments(ctx->high_temp - ctx->low_temp, ctx->sunrise - ctx->dawn);
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break;
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case ANIMATING_TO_LOW:
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return increments(ctx->high_temp - ctx->low_temp, ctx->dusk - ctx->sunset);
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deadline = now + increments(ctx->high_temp - ctx->low_temp, ctx->dusk - ctx->sunset);
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break;
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default:
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return LONG_SLEEP_MS;
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abort();
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break;
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}
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if (deadline <= now) {
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return LONG_SLEEP_MS;
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}
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time_t wait = deadline - now;
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if (wait > MAX_SLEEP_S) {
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wait = MAX_SLEEP_S;
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} else if (wait < MIN_SLEEP_S) {
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wait = MIN_SLEEP_S;
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}
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return wait * 1000;
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assert(deadline > now);
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set_timer(ctx->timer, deadline);
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}
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static int display_poll(struct wl_display *display, short int events, int timeout) {
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struct pollfd pfd[1];
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pfd[0].fd = wl_display_get_fd(display);
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pfd[0].events = events;
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return poll(pfd, 1, timeout);
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if (poll(pfd, 1, timeout) == -1) {
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return errno == EINTR ? 0 : -1;
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}
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return 0;
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}
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static int display_dispatch_with_timeout(struct wl_display *display, int timeout) {
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static int display_dispatch(struct wl_display *display, int timeout) {
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if (wl_display_prepare_read(display) == -1) {
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return wl_display_dispatch_pending(display);
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}
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@ -447,9 +460,16 @@ static const char usage[] = "usage: %s [options]\n"
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" -d <minutes> set ramping duration in minutes (default: 60)\n"
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" -g <gamma> set gamma (default: 1.0)\n";
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static int timer_fired = 0;
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static void timer_signal(int signal) {
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(void)signal;
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timer_fired = true;
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}
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int main(int argc, char *argv[]) {
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tzset();
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init_time(NULL);
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// Initialize defaults
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struct context ctx = {
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@ -461,6 +481,21 @@ int main(int argc, char *argv[]) {
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};
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wl_list_init(&ctx.outputs);
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struct sigaction timer_action = {
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.sa_handler = timer_signal,
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.sa_flags = 0,
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};
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if (sigaction(SIGALRM, &timer_action, NULL) == -1) {
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fprintf(stderr, "could not configure alarm handler: %s\n", strerror(errno));
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return 1;
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}
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if (timer_create(CLOCK_REALTIME, NULL, &ctx.timer) == -1) {
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fprintf(stderr, "could not configure timer: %s\n", strerror(errno));
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return 1;
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}
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#ifdef SPEEDRUN
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fprintf(stderr, "warning: speedrun mode enabled\n");
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#endif
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@ -524,9 +559,14 @@ int main(int argc, char *argv[]) {
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time_t now = get_time_sec(NULL);
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update_temperature(&ctx, now);
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while (display_dispatch_with_timeout(display, wait_adjust(time_to_next_event(&ctx, now))) != -1) {
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update_timer(&ctx, now);
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while (display_dispatch(display, -1) != -1) {
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if (timer_fired) {
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timer_fired = false;
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now = get_time_sec(NULL);
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update_temperature(&ctx, now);
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update_timer(&ctx, now);
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}
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}
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return EXIT_SUCCESS;
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@ -45,10 +45,11 @@ protocols_dep = declare_dependency(link_with: lib_protocols, sources: protocols_
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cc = meson.get_compiler('c')
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m = cc.find_library('m')
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rt = cc.find_library('rt')
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executable(
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'wlsunset',
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['main.c', 'color_math.c'],
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dependencies: [protocols_dep, m],
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dependencies: [protocols_dep, m, rt],
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install: true
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)
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