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// https://www.youtube.com/watch?v=8sEe-4tig_A
#include <stdio.h>
#include <stc/coroutine.h>
struct Task {
int (*fn)(struct Task*);
int cco_state;
struct Scheduler* sched;
};
#define i_type Scheduler
#define i_key struct Task
#include <stc/cqueue.h>
static bool schedule(Scheduler* sched)
{
struct Task task = *Scheduler_front(sched);
Scheduler_pop(sched);
if (!cco_done(&task))
task.fn(&task);
return !Scheduler_empty(sched);
}
static int push_task(const struct Task* task)
{
Scheduler_push(task->sched, *task);
return CCO_YIELD;
}
static int taskA(struct Task* task)
{
cco_routine(task) {
puts("Hello, from task A");
cco_yield_v(push_task(task));
puts("A is back doing work");
cco_yield_v(push_task(task));
puts("A is back doing more work");
cco_yield_v(push_task(task));
puts("A is back doing even more work");
}
return 0;
}
static int taskB(struct Task* task)
{
cco_routine(task) {
puts("Hello, from task B");
cco_yield_v(push_task(task));
puts("B is back doing work");
cco_yield_v(push_task(task));
puts("B is back doing more work");
}
return 0;
}
void Use(void)
{
Scheduler scheduler = c_init(Scheduler, {
{.fn=taskA, .sched=&scheduler},
{.fn=taskB, .sched=&scheduler},
});
while (schedule(&scheduler)) {}
Scheduler_drop(&scheduler);
}
int main(void)
{
Use();
}
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