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OpenCL 1.1 software implementation

api_device.cpp

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00001 /*
00002  * Copyright (c) 2011, Denis Steckelmacher <steckdenis@yahoo.fr>
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *     * Redistributions of source code must retain the above copyright
00008  *       notice, this list of conditions and the following disclaimer.
00009  *     * Redistributions in binary form must reproduce the above copyright
00010  *       notice, this list of conditions and the following disclaimer in the
00011  *       documentation and/or other materials provided with the distribution.
00012  *     * Neither the name of the copyright holder nor the
00013  *       names of its contributors may be used to endorse or promote products
00014  *       derived from this software without specific prior written permission.
00015  *
00016  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
00017  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00018  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00019  * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
00020  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00021  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00022  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00023  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00024  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00025  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00026  */
00027 
00033 #include "CL/cl.h"
00034 #include <core/cpu/device.h>
00035 
00036 static Coal::CPUDevice cpudevice;
00037 
00038 cl_int
00039 clGetDeviceIDs(cl_platform_id   platform,
00040                cl_device_type   device_type,
00041                cl_uint          num_entries,
00042                cl_device_id *   devices,
00043                cl_uint *        num_devices)
00044 {
00045     if (platform != 0)
00046         // We currently implement only one platform
00047         return CL_INVALID_PLATFORM;
00048 
00049     if (num_entries == 0 && devices != 0)
00050         return CL_INVALID_VALUE;
00051 
00052     if (num_devices == 0 && devices == 0)
00053         return CL_INVALID_VALUE;
00054 
00055     // We currently implement only CPU-based acceleration
00056     if (device_type & (CL_DEVICE_TYPE_DEFAULT | CL_DEVICE_TYPE_CPU))
00057     {
00058         cpudevice.init();
00059         
00060         if (devices)
00061             devices[0] = (cl_device_id)(&cpudevice);
00062 
00063         if (num_devices)
00064             *num_devices = 1;
00065     }
00066     else
00067         return CL_DEVICE_NOT_FOUND;
00068 
00069     return CL_SUCCESS;
00070 }
00071 
00072 cl_int
00073 clGetDeviceInfo(cl_device_id    device,
00074                 cl_device_info  param_name,
00075                 size_t          param_value_size,
00076                 void *          param_value,
00077                 size_t *        param_value_size_ret)
00078 {
00079     if (!device->isA(Coal::Object::T_Device))
00080         return CL_INVALID_DEVICE;
00081 
00082     Coal::DeviceInterface *iface = (Coal::DeviceInterface *)device;
00083     return iface->info(param_name, param_value_size, param_value,
00084                        param_value_size_ret);
00085 }
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