Blocks until all previously queued opencl commands in a command-queue are issued to the associated device and have completed.
cl_int clFinish(cl_command_queue command_queue);
Blocks until all previously queued OpenCL commands in command_queue are issued to the associated device and have completed.
clFinish does not return until all previously queued commands in command_queue have been processed and completed. clFinish is also a synchronization point.
Returns CL_SUCCESS if the function call was executed successfully. Otherwise, it returns one of the following:
CL_INVALID_COMMAND_QUEUE if command_queue is not a valid command-queue.
CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.
CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.
\m[blue]OpenCL Specification\m[]\s-2\u[1]\d\s+2
clFlush(3clc)
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OpenCL Specification
page 193, section 5.13 - Flush and Finish