clReleaseDevice
clReleaseDevice
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clReleaseDevice Decrements the `device` reference count.

##

cl_int `clReleaseDevice` cl_device_id device

## Notes

Decrements the `device` reference count if device is a valid sub-device created by a call to clCreateSubDevices. If `device` is a root level device i.e. a cl_device_id returned by clGetDeviceIDs, the `device` reference count remains unchanged.

After the `device` reference count becomes zero and all the objects attached to `device` (such as command-queues) are released, the `device` object is deleted.

## Errors

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

- CL_INVALID_DEVICE if `device` is not a valid sub-device created by a call to clCreateSubDevices.
- 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.

## Specification

OpenCL Specification

## Also see

clCreateSubDevices, clGetDeviceIDs, clRetainDevice

##