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 #include "core/platform.hpp"
  26
  27 using namespace clover;
  28
  29 CLOVER_API cl_context
  30 clCreateContext(const cl_context_properties *d_props, cl_uint num_devs,
  31                 const cl_device_id *d_devs,
  32                 void (CL_CALLBACK *pfn_notify)(const char *, const void *,
  33                                                size_t, void *),
  34                 void *user_data, cl_int *r_errcode) try {
  35    auto props = obj<property_list_tag>(d_props);
  36    auto devs = objs(d_devs, num_devs);
  37
  38    if (!pfn_notify && user_data)
  39       throw error(CL_INVALID_VALUE);
  40
  41    for (auto &prop : props) {
  42       if (prop.first == CL_CONTEXT_PLATFORM)
  43          obj(prop.second.as<cl_platform_id>());
  44       else
  45          throw error(CL_INVALID_PROPERTY);
  46    }
  47
  48    ret_error(r_errcode, CL_SUCCESS);
  49    return desc(new context(props, devs));
  50
  51 } catch (error &e) {
  52    ret_error(r_errcode, e);
  53    return NULL;
  54 }
  55
  56 CLOVER_API cl_context
  57 clCreateContextFromType(const cl_context_properties *d_props,
  58                         cl_device_type type,
  59                         void (CL_CALLBACK *pfn_notify)(
  60                            const char *, const void *, size_t, void *),
  61                         void *user_data, cl_int *r_errcode) try {
  62    cl_platform_id d_platform;
  63    cl_uint num_platforms;
  64    cl_int ret;
  65    std::vector<cl_device_id> devs;
  66    cl_uint num_devices;
  67
  68    ret = clGetPlatformIDs(1, &d_platform, &num_platforms);
  69    if (ret || !num_platforms)
  70       throw error(CL_INVALID_PLATFORM);
  71
  72    ret = clGetDeviceIDs(d_platform, type, 0, NULL, &num_devices);
  73    if (ret)
  74       throw error(CL_DEVICE_NOT_FOUND);
  75    devs.resize(num_devices);
  76    ret = clGetDeviceIDs(d_platform, type, num_devices, devs.data(), 0);
  77    if (ret)
  78       throw error(CL_DEVICE_NOT_FOUND);
  79
  80    return clCreateContext(d_props, num_devices, devs.data(), pfn_notify,
  81                           user_data, r_errcode);
  82
  83 } catch (error &e) {
  84    ret_error(r_errcode, e);
  85    return NULL;
  86 }
  87
  88 CLOVER_API cl_int
  89 clRetainContext(cl_context d_ctx) try {
  90    obj(d_ctx).retain();
  91    return CL_SUCCESS;
  92
  93 } catch (error &e) {
  94    return e.get();
  95 }
  96
  97 CLOVER_API cl_int
  98 clReleaseContext(cl_context d_ctx) try {
  99    if (obj(d_ctx).release())
 100       delete pobj(d_ctx);
 101
 102    return CL_SUCCESS;
 103
 104 } catch (error &e) {
 105    return e.get();
 106 }
 107
 108 CLOVER_API cl_int
 109 clGetContextInfo(cl_context d_ctx, cl_context_info param,
 110                  size_t size, void *r_buf, size_t *r_size) try {
 111    property_buffer buf { r_buf, size, r_size };
 112    auto &ctx = obj(d_ctx);
 113
 114    switch (param) {
 115    case CL_CONTEXT_REFERENCE_COUNT:
 116       buf.as_scalar<cl_uint>() = ctx.ref_count();
 117       break;
 118
 119    case CL_CONTEXT_NUM_DEVICES:
 120       buf.as_scalar<cl_uint>() = ctx.devices().size();
 121       break;
 122
 123    case CL_CONTEXT_DEVICES:
 124       buf.as_vector<cl_device_id>() = descs(ctx.devices());
 125       break;
 126
 127    case CL_CONTEXT_PROPERTIES:
 128       buf.as_vector<cl_context_properties>() = desc(ctx.properties());
 129       break;
 130
 131    default:
 132       throw error(CL_INVALID_VALUE);
 133    }
 134
 135    return CL_SUCCESS;
 136
 137 } catch (error &e) {
 138    return e.get();
 139 }