NAME¶clGetEventInfo - Returns information about the event object.
cl_int clGetEventInfo(cl_event event, cl_event_info param_name, size_t param_value_size, void *param_value, size_t *param_value_size_ret);
|cl_event_info||Return Type||Information returned in param_value|
|CL_EVENT_COMMAND_QUEUE||cl_command_queue||Return the command-queue associated with event. For user event objects, a NULL value is returned.|
|CL_EVENT_CONTEXT||cl_context||Return the context associated with event.|
|CL_EVENT_COMMAND_TYPE||cl_command_type||Return the command associated with event. Can be one of the following values: CL_COMMAND_NDRANGE_KERNEL CL_COMMAND_TASK CL_COMMAND_NATIVE_KERNEL CL_COMMAND_READ_BUFFER CL_COMMAND_WRITE_BUFFER CL_COMMAND_COPY_BUFFER CL_COMMAND_READ_IMAGE CL_COMMAND_WRITE_IMAGE CL_COMMAND_COPY_IMAGE CL_COMMAND_COPY_BUFFER_TO_IMAGE CL_COMMAND_COPY_IMAGE_TO_BUFFER CL_COMMAND_MAP_BUFFER CL_COMMAND_MAP_IMAGE CL_COMMAND_UNMAP_MEM_OBJECT CL_COMMAND_MARKER CL_COMMAND_ACQUIRE_GL_OBJECTS CL_COMMAND_RELEASE_GL_OBJECTS CL_COMMAND_READ_BUFFER_RECT CL_COMMAND_WRITE_BUFFER_RECT CL_COMMAND_COPY_BUFFER_RECT CL_COMMAND_USER CL_COMMAND_BARRIER CL_COMMAND_MIGRATE_MEM_OBJECTS CL_COMMAND_FILL_BUFFER CL_COMMAND_FILL_IMAGE CL_COMMAND_GL_FENCE_SYNC_OBJECT_KHR (if cl_khr_gl_event(3clc) is enabled) CL_COMMAND_ACQUIRE_D3D10_OBJECTS_KHR (if cl_khr_d3d10_sharing(3clc) is enabled) CL_COMMAND_RELEASE_D3D10_OBJECTS_KHR (if cl_khr_d3d10_sharing(3clc) is enabled) CL_COMMAND_ACQUIRE_DX9_MEDIA_SURFACES_KHR (if cl_khr_dx9_media_sharing(3clc) is enabled) CL_COMMAND_RELEASE_DX9_MEDIA_SURFACES_KHR (if cl_khr_dx9_media_sharing(3clc) is enabled) CL_COMMAND_ACQUIRE_D3D11_OBJECTS_KHR (if cl_khr_d3d11_sharing(3clc) is enabled) CL_COMMAND_RELEASE_D3D11_OBJECTS_KHR (if cl_khr_d3d11_sharing(3clc) is enabled)|
|CL_EVENT_COMMAND_ EXECUTION_STATUS||cl_int||Return the execution status of the command identified by event. The valid values are: CL_QUEUED (command has been enqueued in the command-queue), CL_SUBMITTED (enqueued command has been submitted by the host to the device associated with the command-queue), CL_RUNNING (device is currently executing this command), CL_COMPLETE (the command has completed), or Error code given by a negative integer value. (command was abnormally terminated – this may be caused by a bad memory access etc.) These error codes come from the same set of error codes that are returned from the platform or runtime API calls as return values or errcode_ret values. The error code values are negative, and event state values are positive. The event state values are ordered from the largest value (CL_QUEUED) for the first or initial state to the smallest value (CL_COMPLETE or negative integer value) for the last or complete state. The value of CL_COMPLETE and CL_SUCCESS are the same.|
|CL_EVENT_REFERENCE_COUNT||cl_uint||Return the event reference count. The reference count returned should be considered immediately stale. It is unsuitable for general use in applications. This feature is provided for identifying memory leaks.|
NOTES¶Using clGetEventInfo to determine if a command identified by event has finished execution (i.e. CL_EVENT_COMMAND_EXECUTION_STATUS returns CL_COMPLETE) is not a synchronization point. There are no guarantees that the memory objects being modified by command associated with event will be visible to other enqueued commands.
ERRORS¶Returns CL_SUCCESS if the function executed successfully, or one of the errors below:
SEE ALSO¶clReleaseEvent(3clc), clRetainEvent(3clc), clWaitForEvents(3clc), cl_khr_gl_event(3clc)
AUTHORS¶The Khronos Group
COPYRIGHT¶Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or associated documentation files (the "Materials"), to deal in the Materials without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to the condition that this copyright notice and permission notice shall be included in all copies or substantial portions of the Materials.
- OpenCL Specification
|02/03/2019||The Khronos Group|