Provided by: opencl-1.2-man-doc_1.0~svn22836-1.1_all
clRetainDevice - Increments the devices reference count. cl_int clRetainDevice(cl_device_id device);
Increments the device reference count if device is a valid sub-device created by a call to clCreateSubDevices(3clc). If device is a root level device i.e. a cl_device_id returned by clGetDeviceIDs(3clc), the device reference count remains unchanged.
Returns CL_SUCCESS if the function is executed successfully or the device is a root-level device. 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(3clc). · 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.
clCreateSubDevices(3clc), clGetDeviceIDs(3clc), clReleaseDevice(3clc)
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1. OpenCL Specification page 52, section 4.3 - Partitioning a Device