To enqueue a barrier command which waits for commands to complete, call the function
cl_int clEnqueueBarrier( cl_command_queue command_queue);
command_queue is a valid host command-queue.
The barrier command waits for all commands previously enqueued in command_queue to complete before it completes. This command blocks command execution, that is, any following commands enqueued after it do not execute until it completes. The barrier command is a synchronization point.
CL_SUCCESS if the function is successfully
Otherwise, it returns one of the following errors:
CL_INVALID_COMMAND_QUEUEif command_queue is not a valid host command-queue.
CL_OUT_OF_RESOURCESif there is a failure to allocate resources required by the OpenCL implementation on the device.
CL_OUT_OF_HOST_MEMORYif there is a failure to allocate resources required by the OpenCL implementation on the host.
For more information, see the OpenCL Specification
This page is extracted from the OpenCL Specification. Fixes and changes should be made to the Specification, not directly.
Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.