Revert "Class-ify lockfree event"

1 files changed, 19 insertions, 25 deletions

diff --git a/src/core/lib/iomgr/lockfree_event.h b/src/core/lib/iomgr/lockfree_event.h
index 47d0089c01..75526d6b9f 100644
--- a/src/core/lib/iomgr/lockfree_event.h
+++ b/src/core/lib/iomgr/lockfree_event.h
@@ -25,30 +25,24 @@
 
 #include "src/core/lib/iomgr/exec_ctx.h"
 
-namespace grpc_core {
-
-class LockfreeEvent {
- public:
-  LockfreeEvent() = default;
-  ~LockfreeEvent();
-
-  LockfreeEvent(const LockfreeEvent&) = delete;
-  LockfreeEvent& operator=(const LockfreeEvent&) = delete;
-
-  bool IsShutdown() const {
-    return (gpr_atm_no_barrier_load(&state_) & kShutdownBit) != 0;
-  }
-
-  void NotifyOn(grpc_exec_ctx* exec_ctx, grpc_closure* closure);
-  bool SetShutdown(grpc_exec_ctx* exec_ctx, grpc_error* error);
-  void SetReady(grpc_exec_ctx* exec_ctx);
-
- private:
-  enum State { kClosureNotReady = 0, kClosureReady = 2, kShutdownBit = 1 };
-
-  gpr_atm state_ = kClosureNotReady;
-};
-
-}  // namespace grpc_core
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void grpc_lfev_init(gpr_atm* state);
+void grpc_lfev_destroy(gpr_atm* state);
+bool grpc_lfev_is_shutdown(gpr_atm* state);
+
+void grpc_lfev_notify_on(grpc_exec_ctx* exec_ctx, gpr_atm* state,
+                         grpc_closure* closure, const char* variable);
+/* Returns true on first successful shutdown */
+bool grpc_lfev_set_shutdown(grpc_exec_ctx* exec_ctx, gpr_atm* state,
+                            grpc_error* shutdown_err);
+void grpc_lfev_set_ready(grpc_exec_ctx* exec_ctx, gpr_atm* state,
+                         const char* variable);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* GRPC_CORE_LIB_IOMGR_LOCKFREE_EVENT_H */