1 files changed, 4 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index 98c57300c1..dbffab1c4f 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -634,6 +634,10 @@ extern rb_vm_t *ruby_current_vm;
 #error "unsupported thread model"
 #endif
 
+#define RUBY_VM_SET_INTERRUPT(th) ((th)->interrupt_flag |= 0x02)
+#define RUBY_VM_SET_TIMER_INTERRUPT(th) ((th)->interrupt_flag |= 0x01)
+#define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & 0x02)
+
 void rb_thread_execute_interrupts(rb_thread_t *);
 
 #define RUBY_VM_CHECK_INTS_TH(th) do { \