text: /* OpenCL runtime library: clEnqueueUnmapMemObject()
  
     Copyright (c) 2012 Pekka Jääskeläinen / Tampere University of Technology
     
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
     in the Software without restriction, including without limitation the rights
     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     copies of the Software, and to permit persons to whom the Software is
     furnished to do so, subject to the following conditions:
     
     The above copyright notice and this permission notice shall be included in
     all copies or substantial portions of the Software.
     
     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     THE SOFTWARE.
  */
  
  #include "pocl_cl.h"
  #include "utlist.h"
  #include <assert.h>
  #include "pocl_util.h"
  
  CL_API_ENTRY cl_int CL_API_CALL
  POname(clEnqueueUnmapMemObject)(cl_command_queue command_queue,
                          cl_mem           memobj,
                          void *           mapped_ptr,
                          cl_uint          num_events_in_wait_list,
                          const cl_event * event_wait_list,
                          cl_event *       event) CL_API_SUFFIX__VERSION_1_0
  {
    int errcode;
    cl_device_id device_id;
    unsigned i;
    mem_mapping_t *mapping = NULL;
    _cl_command_node *cmd = NULL;
  
    POCL_RETURN_ERROR_COND((memobj == NULL), CL_INVALID_MEM_OBJECT);
  
    POCL_RETURN_ERROR_COND((command_queue == NULL), CL_INVALID_COMMAND_QUEUE);
  
    POCL_RETURN_ERROR_ON((command_queue->context != memobj->context),
      CL_INVALID_CONTEXT, "memobj and command_queue are not from the same context\n");
  
    POCL_RETURN_ERROR_COND((event_wait_list == NULL && num_events_in_wait_list > 0),
      CL_INVALID_EVENT_WAIT_LIST);
  
    POCL_RETURN_ERROR_COND((event_wait_list != NULL && num_events_in_wait_list == 0),
      CL_INVALID_EVENT_WAIT_LIST);
  
    POCL_LOCK_OBJ (memobj);
    DL_FOREACH (memobj->mappings, mapping)
      {
        if (mapping->host_ptr == mapped_ptr)
            break;
      }
    POCL_UNLOCK_OBJ (memobj);
    POCL_RETURN_ERROR_ON((mapping == NULL), CL_INVALID_VALUE,
        "Could not find mapping of this memobj\n");
  
    /* find the index of the device's ptr in the buffer */
    device_id = command_queue->device;
    for (i = 0; i < command_queue->context->num_devices; ++i)
      {
        if (command_queue->context->devices[i] == device_id)
          break;
      }
  
    assert(i < command_queue->context->num_devices);
  
    errcode = pocl_create_command (&cmd, command_queue,
                                   CL_COMMAND_UNMAP_MEM_OBJECT,
                                   event, num_events_in_wait_list,
                                   event_wait_list);
    if (errcode != CL_SUCCESS)
      goto ERROR;
  
    cmd->command.unmap.data = command_queue->device->data;
    cmd->command.unmap.memobj = memobj;
    cmd->command.unmap.mapping = mapping;
    pocl_command_enqueue(command_queue, cmd);
  
    return CL_SUCCESS;
  
  ERROR:
    POCL_MEM_FREE(cmd);
    return errcode;
  }
  POsym(clEnqueueUnmapMemObject)
  