1 files changed, 10 insertions, 0 deletions
diff --git a/thread_win32.h b/thread_win32.h
index ec2930df12..cc982a9afc 100644
--- a/thread_win32.h
+++ b/thread_win32.h
@@ -25,6 +25,16 @@ typedef HANDLE rb_thread_id_t;
 typedef CRITICAL_SECTION rb_thread_lock_t;
 typedef struct rb_thread_cond_struct rb_thread_cond_t;
 
+struct cond_event_entry {
+    struct cond_event_entry* next;
+    HANDLE event;
+};
+
+struct rb_thread_cond_struct {
+    struct cond_event_entry *next;
+    struct cond_event_entry *last;
+};
+
 typedef struct native_thread_data_struct {
     HANDLE interrupt_event;
 } native_thread_data_t;