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 BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18 // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20 // 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<cl_device_id>(), devs, devs + num_devs))
  41       throw error(CL_INVALID_DEVICE);
  42
  43    for (auto p : mprops) {
  44       if (!(p.first == CL_CONTEXT_PLATFORM &&
  45             (cl_platform_id)p.second == NULL))
  46          throw error(CL_INVALID_PROPERTY);
  47    }
  48
  49    ret_error(errcode_ret, CL_SUCCESS);
  50    return new context(
  51       property_vector(mprops),
  52       std::vector<cl_device_id>(devs, devs + num_devs));
  53
  54 } catch(error &e) {
  55    ret_error(errcode_ret, e);
  56    return NULL;
  57 }
  58
  59 PUBLIC cl_context
  60 clCreateContextFromType(const cl_context_properties *props,
  61                         cl_device_type type,
  62                         void (CL_CALLBACK *pfn_notify)(
  63                            const char *, const void *, size_t, void *),
  64                         void *user_data, cl_int *errcode_ret) {
  65    cl_device_id dev;
  66    cl_int ret;
  67
  68    ret = clGetDeviceIDs(0, type, 1, &dev, 0);
  69    if (ret) {
  70       ret_error(errcode_ret, ret);
  71       return NULL;
  72    }
  73
  74    return clCreateContext(props, 1, &dev, pfn_notify, user_data, errcode_ret);
  75 }
  76
  77 PUBLIC cl_int
  78 clRetainContext(cl_context ctx) {
  79    if (!ctx)
  80       return CL_INVALID_CONTEXT;
  81
  82    ctx->retain();
  83    return CL_SUCCESS;
  84 }
  85
  86 PUBLIC cl_int
  87 clReleaseContext(cl_context ctx) {
  88    if (!ctx)
  89       return CL_INVALID_CONTEXT;
  90
  91    if (ctx->release())
  92       delete ctx;
  93
  94    return CL_SUCCESS;
  95 }
  96
  97 PUBLIC cl_int
  98 clGetContextInfo(cl_context ctx, cl_context_info param,
  99                  size_t size, void *buf, size_t *size_ret) {
 100    if (!ctx)
 101       return CL_INVALID_CONTEXT;
 102
 103    switch (param) {
 104    case CL_CONTEXT_REFERENCE_COUNT:
 105       return scalar_property<cl_uint>(buf, size, size_ret, ctx->ref_count());
 106
 107    case CL_CONTEXT_NUM_DEVICES:
 108       return scalar_property<cl_uint>(buf, size, size_ret, ctx->devs.size());
 109
 110    case CL_CONTEXT_DEVICES:
 111       return vector_property<cl_device_id>(buf, size, size_ret, ctx->devs);
 112
 113    case CL_CONTEXT_PROPERTIES:
 114       return vector_property<cl_context_properties>(buf, size, size_ret,
 115                                                     ctx->props());
 116
 117    default:
 118       return CL_INVALID_VALUE;
 119    }
 120 }