source: src/tests/coroutine.c @ dd0c97b

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc
Last change on this file since dd0c97b was 80d9e49, checked in by Thierry Delisle <tdelisle@…>, 7 years ago

Coroutines no longer require virtual pointers or any code beyond the get_coroutine routine

  • Property mode set to 100644
File size: 1.7 KB
Line 
1#include <fstream>
2#include <threads>
3
4struct Fibonacci {
5      int fn; // used for communication
6      coroutine c;
7};
8
9void ?{}(Fibonacci* this) {
10      this->fn = 0;
11}
12
13coroutine* get_coroutine(Fibonacci* this) {
14      return &this->c;
15}
16
17void co_main(Fibonacci* this) {
18#ifdef MORE_DEBUG
19      sout | "Starting main of coroutine " | this | endl;
20      sout | "Started from " | this->c.last | endl;
21#endif
22      int fn1, fn2;             // retained between resumes
23      this->fn = 0;
24      fn1 = this->fn;
25      suspend();                // return to last resume
26
27      this->fn = 1;
28      fn2 = fn1;
29      fn1 = this->fn;
30      suspend();                // return to last resume
31
32      for ( ;; ) {
33            this->fn = fn1 + fn2;
34            fn2 = fn1;
35            fn1 = this->fn;
36            suspend();  // return to last resume
37      }
38}
39
40int next(Fibonacci* this) {
41      resume(this); // transfer to last suspend
42      return this->fn;
43}
44
45int main() {
46      Fibonacci f1, f2;
47#ifdef MORE_DEBUG     
48      Fibonacci *pf1 = &f1, *pf2 = &f2;
49      coroutine *cf1 = &f1.c, *cf2 = &f2.c;
50      covptr_t  *vf1 = vtable(pf1), *vf2 = vtable(pf2);
51      coroutine *cv1 = get_coroutine(vf1), *cv2 = get_coroutine(vf2);
52      Fibonacci *ov1 = (Fibonacci *)get_object(vf1), *ov2 = (Fibonacci *)get_object(vf2);
53
54      sout | "User coroutines : " | pf1 | ' ' | pf2 | endl;
55      sout | "Coroutine data  : " | cf1 | ' ' | cf2 | endl;
56      sout | "Vptr address    : " | vf1 | ' ' | vf2 | endl;
57      sout | "Vptr obj data   : " | ov1 | ' ' | ov2 | endl;
58      sout | "Vptr cor data   : " | cv1 | ' ' | cv2 | endl;
59#endif
60      for ( int i = 1; i <= 10; i += 1 ) {
61            sout | next(&f1) | ' ' | next(&f2) | endl;
62      }
63
64      return 0;
65}
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