03_wait_for.c File Reference

#include <stdio.h>
#include <serene/runtime.h>

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Functions
static srn_fiber_result_t	worker (srn_context_t *ctx, void *arg)
static srn_fiber_result_t	waiter (srn_context_t *ctx, void *arg)
int	main (void)

Variables
static int	answer
static srn_fiber_t *	worker_fiber

Function Documentation

main()

int main

(

void

)

Definition at line 58 of file 03_wait_for.c.

               {
  srn_mm_t *mm = srn_mm_init();
  srn_engine_t *engine = srn_engine_make(mm);
  srn_context_t *ctx = srn_context_make(engine);
  srn_scheduler_t *sched = engine->scheduler;
 
  // Order of creation sets who runs first on one worker. The waiter runs first
  // and parks, then the worker finishes and wakes it.
  (void)srn_fiber_make(ctx, sched, waiter, nullptr, 0);
  worker_fiber = srn_fiber_make(ctx, sched, worker, nullptr, 0);
 
  srn_sched_run(sched, 1);
 
  srn_context_release(ctx);
  srn_engine_shutdown(engine);
  srn_mm_shutdown(mm);
  return 0;
}

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waiter()

static srn_fiber_result_t waiter ( srn_context_t * ctx, void * arg )

static

Definition at line 48 of file 03_wait_for.c.

                                                                {
  (void)ctx;
  (void)arg;
  printf("waiter: blocking on the worker\n");
  srn_fiber_result_t result = srn_fiber_wait_for(worker_fiber);
  printf("waiter: worker produced %s\n",
         result == &answer ? "the expected value" : "an unexpected value");
  return &answer;
}

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worker()

static srn_fiber_result_t worker ( srn_context_t * ctx, void * arg )

static

Definition at line 41 of file 03_wait_for.c.

                                                                {
  (void)ctx;
  (void)arg;
  printf("worker: computing\n");
  return &answer;
}

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Variable Documentation

answer

int answer

static

Definition at line 36 of file 03_wait_for.c.

worker_fiber

srn_fiber_t* worker_fiber

static

Definition at line 39 of file 03_wait_for.c.