scheduler.c

Basic task scheduling library
git clone git://git.finwo.net/lib/scheduler.c
Log | Files | Refs | README | LICENSE

example_periodic.c (876B)

      1 #include <stdio.h>
      2 #include <stdlib.h>
      3 #include <sys/time.h>
      4 
      5 #include "src/scheduler.h"
      6 
      7 typedef struct {
      8   int64_t start;
      9   int64_t interval_ms;
     10   int64_t created_at;
     11 } TimerCtx;
     12 
     13 static int ticker(int64_t ts, pt_task_t *task) {
     14   TimerCtx *ctx = task->udata;
     15 
     16   if (ts - ctx->start >= ctx->interval_ms) {
     17     printf("[%lld ms] tick!\n", (long long)(ts - ctx->created_at));
     18     ctx->start = ts;
     19 
     20     if (ts - ctx->created_at >= 5000) {
     21       printf("5 seconds elapsed, stopping.\n");
     22       free(ctx);
     23       return SCHED_DONE;
     24     }
     25   }
     26 
     27   return SCHED_RUNNING;
     28 }
     29 
     30 int main(void) {
     31   TimerCtx *ctx = calloc(1, sizeof(TimerCtx));
     32 
     33   struct timeval now;
     34   gettimeofday(&now, NULL);
     35   ctx->created_at  = (int64_t)now.tv_sec * 1000 + now.tv_usec / 1000;
     36   ctx->start       = ctx->created_at;
     37   ctx->interval_ms = 1000;
     38 
     39   sched_create(ticker, ctx);
     40   sched_main();
     41   return 0;
     42 }