src/gallium/state_trackers/clover/api/context.cpp

   1 //
   2 // Copyright 2012 Francisco Jerez
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 // OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22
  23 #include "api/util.hpp"
  24 #include "core/context.hpp"
  25
  26 using namespace clover;
  27
  28 PUBLIC cl_context
  29 clCreateContext(const cl_context_properties *props, cl_uint num_devs,
  30                 const cl_device_id *devs,
  31                 void (CL_CALLBACK *pfn_notify)(const char *, const void *,
  32                                                size_t, void *),
  33                 void *user_data, cl_int *errcode_ret) try {
  34    auto mprops = property_map(props);
  35
  36    if (!devs || !num_devs ||
  37        (!pfn_notify && user_data))
  38       throw error(CL_INVALID_VALUE);
  39
  40    if (any_of(is_zero(), range(devs, num_devs)))
  41       throw error(CL_INVALID_DEVICE);
  42
  43    for (auto p : mprops) {
  44       if (p.first != CL_CONTEXT_PLATFORM)
  45          throw error(CL_INVALID_PROPERTY);
  46    }
  47
  48    ret_error(errcode_ret, CL_SUCCESS);
  49    return new context(
  50       property_vector(mprops),
  51       std::vector<cl_device_id>(devs, devs + num_devs));
  52
  53 } catch(error &e) {
  54    ret_error(errcode_ret, e);
  55    return NULL;
  56 }
  57
  58 PUBLIC cl_context
  59 clCreateContextFromType(const cl_context_properties *props,
  60                         cl_device_type type,
  61                         void (CL_CALLBACK *pfn_notify)(
  62                            const char *, const void *, size_t, void *),
  63                         void *user_data, cl_int *errcode_ret) try {
  64    cl_platform_id platform;
  65    cl_uint num_platforms;
  66    cl_device_id dev;
  67    cl_int ret;
  68
  69    ret = clGetPlatformIDs(1, &platform, &num_platforms);
  70    if (ret || !num_platforms)
  71       throw error(CL_INVALID_PLATFORM);
  72
  73    ret = clGetDeviceIDs(platform, type, 1, &dev, 0);
  74    if (ret)
  75       throw error(CL_DEVICE_NOT_FOUND);
  76
  77    return clCreateContext(props, 1, &dev, pfn_notify, user_data, errcode_ret);
  78
  79 } catch(error &e) {
  80    ret_error(errcode_ret, e);
  81    return NULL;
  82 }
  83
  84 PUBLIC cl_int
  85 clRetainContext(cl_context ctx) {
  86    if (!ctx)
  87       return CL_INVALID_CONTEXT;
  88
  89    ctx->retain();
  90    return CL_SUCCESS;
  91 }
  92
  93 PUBLIC cl_int
  94 clReleaseContext(cl_context ctx) {
  95    if (!ctx)
  96       return CL_INVALID_CONTEXT;
  97
  98    if (ctx->release())
  99       delete ctx;
 100
 101    return CL_SUCCESS;
 102 }
 103
 104 PUBLIC cl_int
 105 clGetContextInfo(cl_context ctx, cl_context_info param,
 106                  size_t size, void *buf, size_t *size_ret) {
 107    if (!ctx)
 108       return CL_INVALID_CONTEXT;
 109
 110    switch (param) {
 111    case CL_CONTEXT_REFERENCE_COUNT:
 112       return scalar_property<cl_uint>(buf, size, size_ret, ctx->ref_count());
 113
 114    case CL_CONTEXT_NUM_DEVICES:
 115       return scalar_property<cl_uint>(buf, size, size_ret, ctx->devs.size());
 116
 117    case CL_CONTEXT_DEVICES:
 118       return vector_property<cl_device_id>(buf, size, size_ret, ctx->devs);
 119
 120    case CL_CONTEXT_PROPERTIES:
 121       return vector_property<cl_context_properties>(buf, size, size_ret,
 122                                                     ctx->props());
 123
 124    default:
 125       return CL_INVALID_VALUE;
 126    }
 127 }