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Records an event. If stream is non-zero, the event is recorded after all preceding operations in stream have been completed; otherwise, it is recorded after all preceding operations in the CUDA context have been completed. Since operation is asynchronous, cudaEventQuery() and/or cudaEventSynchronize() must be used to determine when the event has actually been recorded.
If cudaEventRecord() has previously been called on event, then this call will overwrite any existing state in event. Any subsequent calls which examine the status of event will only examine the completion of this most recent call to cudaEventRecord().
- Parameters:
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| event | - Event to record |
| stream | - Stream in which to record event |
- Returns:
- cudaSuccess, cudaErrorInvalidValue, cudaErrorInitializationError, cudaErrorInvalidResourceHandle, cudaErrorLaunchFailure
- Note:
- Note that this function may also return error codes from previous, asynchronous launches.
- See also:
- cudaEventCreate (C API), cudaEventCreateWithFlags, cudaEventQuery, cudaEventSynchronize, cudaEventDestroy, cudaEventElapsedTime, cudaStreamWaitEvent
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