1 files changed, 62 insertions, 0 deletions
diff --git a/misc/examples/coroutines/cointerleave.c b/misc/examples/coroutines/cointerleave.c
new file mode 100644
index 00000000..80494176
--- /dev/null
+++ b/misc/examples/coroutines/cointerleave.c
@@ -0,0 +1,62 @@
+// https://www.youtube.com/watch?v=8sEe-4tig_A
+#include <stdio.h>
+#include <stc/coroutine.h>
+#define i_type IVec
+#define i_key int
+#include <stc/cvec.h>
+
+struct GenValue {
+    IVec *v;
+    IVec_iter it;
+    int cco_state;
+};
+
+static int get_value(struct GenValue* g)
+{
+    cco_routine(g) {
+        for (g->it = IVec_begin(g->v); g->it.ref; IVec_next(&g->it))
+            cco_yield_v(*g->it.ref);
+    }
+    return -1;
+}
+
+struct Generator {
+    struct GenValue x, y;
+    int cco_state;
+    int value;
+};
+
+cco_result interleaved(struct Generator* g) 
+{
+    cco_routine(g) {
+        while (!(cco_done(&g->x) & cco_done(&g->y))) {
+            g->value = get_value(&g->x);
+            if (!cco_done(&g->x))
+                cco_yield();
+
+            g->value = get_value(&g->y);
+            if (!cco_done(&g->y))
+                cco_yield();
+        }
+    }
+    return CCO_DONE;
+}
+
+void Use(void)
+{
+    IVec a = c_init(IVec, {2, 4, 6, 8, 10, 11});
+    IVec b = c_init(IVec, {3, 5, 7, 9});
+
+    struct Generator g = {{&a}, {&b}};
+
+    cco_blocking_call(interleaved(&g)) {
+        printf("%d ", g.value);
+    }
+    puts("");
+    c_drop(IVec, &a, &b);
+}
+
+int main(void)
+{
+    Use();
+}