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1 /**
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2 *
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3 */
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4 module opencl.wrapper;
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5
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6 import opencl.error;
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7 import opencl.c.opencl;
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8
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9 // alternate Info getter functions
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10 private alias extern(C) cl_int function(const(void)*, const(void*), cl_uint, size_t, void*, size_t*) Func;
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11
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12 /// abstract base class
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13 abstract class CLWrapper(T, alias infoFunction)
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14 {
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15 protected:
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16 T _object = null;
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17
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18 // should only be used inside here
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19 package T getObject()
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20 {
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21 return _object;
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22 }
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23
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24 // used for all non-array types
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25 T getInfo(T)(cl_uint infoname, Func altFunction = null, cl_device_id device = null)
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26 {
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27 assert(_object !is null);
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28 size_t needed;
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29 cl_int res;
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30
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31 // get number of needed memory
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32 if (altFunction != null && device != null)
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33 res = altFunction(_object, device, infoname, 0, null, &needed);
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34 else
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35 res = infoFunction(_object, infoname, 0, null, &needed);
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36
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37 // error checking
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38 if (res != CL_SUCCESS)
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39 throw new CLException(res);
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40
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41 assert(needed == T.sizeof); // TODO:
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42
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43 T info;
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44
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45 // get actual data
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46 if (altFunction != null && device != null)
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47 res = altFunction(_object, device, infoname, T.sizeof, &info, null);
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48 else
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49 res = infoFunction(_object, infoname, T.sizeof, &info, null);
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50
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51 // error checking
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52 if (res != CL_SUCCESS)
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53 throw new CLException(res);
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54
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55 return info;
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56 }
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57
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58 // helper function for all OpenCL Get*Info functions
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59 // used for all array return types
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60 T[] getArrayInfo(T)(cl_uint infoname, Func altFunction = null, cl_device_id device = null)
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61 {
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62 assert(_object !is null);
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63 size_t needed;
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64 cl_int res;
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65
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66 // get number of needed memory
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67 if (altFunction != null && device != null)
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68 res = altFunction(_object, device, infoname, 0, null, &needed);
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69 else
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70 res = infoFunction(_object, infoname, 0, null, &needed);
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71
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72 // error checking
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73 if (res != CL_SUCCESS)
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74 throw new CLException(res);
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75
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76 auto buffer = new T[needed];
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77
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78 // get actual data
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79 if (altFunction != null && device != null)
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80 res = altFunction(_object, device, infoname, buffer.length, cast(void*)buffer.ptr, null);
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81 else
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82 res = infoFunction(_object, infoname, buffer.length, cast(void*)buffer.ptr, null);
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83
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84 // error checking
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85 if (res != CL_SUCCESS)
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86 throw new CLException(res);
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87
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88 return buffer;
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89 }
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90
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91 string getStringInfo(cl_uint infoname, Func altFunction = null, cl_device_id device = null)
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92 {
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93 return cast(string) getArrayInfo!(char)(infoname, altFunction, device);
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94 }
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95
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96 // static cl_int getInfo(Arg0, Arg1)(Arg0 arg0, Arg1)
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97
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98 public:
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99 this() {}
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100 this(T obj)
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101 {
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102 _object = obj;
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103 }
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104 } |
