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Mojo function

mbarrier_test_wait

mbarrier_test_wait[type: AnyType](shared_mem: UnsafePointer[type, address_space=AddressSpace(3), alignment=alignment, mut=mut, origin=origin], state: Int) -> Bool

Test if all threads have arrived at the memory barrier.

Non-blocking check to see if all participating threads have reached the barrier. Only supported on NVIDIA GPUs.

Args:

  • shared_mem (UnsafePointer[type, address_space=AddressSpace(3), alignment=alignment, mut=mut, origin=origin]): Pointer to the shared memory barrier.
  • state (Int): Expected state of the memory barrier.

Returns:

True if all threads have arrived, False otherwise.