Thread scheduler for light weight concurrency.

1 files changed, 3 insertions, 1 deletions

diff --git a/vm_core.h b/vm_core.h
index e725e4d8d0..4f122cacb8 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -969,13 +969,15 @@ typedef struct rb_thread_struct {
     rb_fiber_t *root_fiber;
     rb_jmpbuf_t root_jmpbuf;
 
+    VALUE scheduler;
+    unsigned blocking;
+
     /* misc */
     VALUE name;
 
 #ifdef USE_SIGALTSTACK
     void *altstack;
 #endif
-
 } rb_thread_t;
 
 typedef enum {