diff -ur Metal/MTLEvent.hpp MetalNew/MTLEvent.hpp
--- Metal/MTLEvent.hpp	2023-06-01 12:18:26
+++ MetalNew/MTLEvent.hpp	2024-04-15 07:36:59
@@ -62,6 +62,7 @@
 
     uint64_t                 signaledValue() const;
     void                     setSignaledValue(uint64_t signaledValue);
+    bool                     waitUntilSignaledValue(uint64_t signaledValue, uint64_t timeoutMS);
 };
 
 class SharedEventHandle : public NS::SecureCoding<SharedEventHandle>
@@ -138,6 +139,11 @@
 _MTL_INLINE void MTL::SharedEvent::setSignaledValue(uint64_t signaledValue)
 {
     Object::sendMessage<void>(this, _MTL_PRIVATE_SEL(setSignaledValue_), signaledValue);
+}
+
+// method: waitUntilSignaledValue
+_MTL_INLINE bool MTL::SharedEvent::waitUntilSignaledValue(uint64_t signaledValue, uint64_t timeoutMS) {
+    return Object::sendMessage<bool>(this, _MTL_PRIVATE_SEL(waitUntilSignaledValue_timeoutMS_), signaledValue, timeoutMS);
 }
 
 // static method: alloc
diff -ur Metal/MTLHeaderBridge.hpp MetalNew/MTLHeaderBridge.hpp
--- Metal/MTLHeaderBridge.hpp	2023-06-01 12:18:26
+++ MetalNew/MTLHeaderBridge.hpp	2024-04-15 07:37:29
@@ -1906,6 +1906,9 @@
     "setShouldMaximizeConcurrentCompilation:");
 _MTL_PRIVATE_DEF_SEL(setSignaledValue_,
     "setSignaledValue:");
+_MTL_PRIVATE_DEF_SEL(
+    waitUntilSignaledValue_timeoutMS_,
+    "waitUntilSignaledValue:timeoutMS:");
 _MTL_PRIVATE_DEF_SEL(setSize_,
     "setSize:");
 _MTL_PRIVATE_DEF_SEL(setSlice_,