A C continuation implementation inspired by Adam Dunkels' ProtoThread.
Only 7 C macros and 1 struct definition; less than 100 lines of code.
Simple yet POWERFUL.
Now you can write a coroutine (generator, to be exact) in the following way, quick, simple, and in a natural way.
Enjoy the power of YIELD();
Continuation* add(Continuation* co,
int a, int b, int * ret)
{
struct timespec now;
VAR_BEGIN
struct timespec start;
VAR_END
if (!this || a < 0 || b < 0) { *ret = -1; EXIT(); }
if (KILL_SIGNALLE()) EXIT();
clock_gettime(CLOCK_REALTIME, &this->start);
while(1)
{
clock_gettime(CLOCK_REALTIME, &now);
if ((now.tv_sec - this->start.tv_sec) > 1)
break;
YIELD();
}
*ret = a + b;
EXIT();
}
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