1 files changed, 21 insertions, 0 deletions
diff --git a/thread_none.h b/thread_none.h
new file mode 100644
index 0000000000..ac47e52bda
--- /dev/null
+++ b/thread_none.h
@@ -0,0 +1,21 @@
+#ifndef RUBY_THREAD_NONE_H
+#define RUBY_THREAD_NONE_H
+
+#define RB_NATIVETHREAD_LOCK_INIT (void)(0)
+#define RB_NATIVETHREAD_COND_INIT (void)(0)
+
+// no-thread impl doesn't use TLS but define this to avoid using tls key
+// based implementation in vm.c
+#define RB_THREAD_LOCAL_SPECIFIER
+
+struct rb_native_thread {
+    void *thread_id; // NULL
+};
+
+struct rb_thread_sched_item {};
+struct rb_thread_sched {};
+
+RUBY_EXTERN struct rb_execution_context_struct *ruby_current_ec;
+NOINLINE(struct rb_execution_context_struct *rb_current_ec_noinline(void)); // for assertions
+
+#endif /* RUBY_THREAD_NONE_H */