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-rw-r--r--thread_native.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/thread_native.h b/thread_native.h
index 2870b895c6..aa037d205f 100644
--- a/thread_native.h
+++ b/thread_native.h
@@ -11,6 +11,8 @@
RUBY_SYMBOL_EXPORT_BEGIN
+rb_nativethread_id_t rb_nativethread_self();
+
void rb_nativethread_lock_initialize(rb_nativethread_lock_t *lock);
void rb_nativethread_lock_destroy(rb_nativethread_lock_t *lock);
void rb_nativethread_lock_lock(rb_nativethread_lock_t *lock);