C Specification

To enqueue a barrier command which waits for commands to complete, call the function

// Provided by CL_VERSION_1_0
cl_int clEnqueueBarrier(
    cl_command_queue command_queue);
clEnqueueBarrier is deprecated by version 1.2.

Parameters

  • command_queue is a valid host command-queue.

Description

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.

clEnqueueBarrier returns CL_SUCCESS if the function is successfully executed. Otherwise, it returns one of the following errors:

  • CL_INVALID_COMMAND_QUEUE if command_queue is not a valid host command-queue.

  • CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.

  • CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.

See Also

CL_VERSION_1_0, cl_command_queue

Document Notes

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

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0