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 *d_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 devs = map(addresses(), objs(d_devs, num_devs));
  35    auto mprops = property_map(props);
  36
  37    if (!pfn_notify && user_data)
  38       throw error(CL_INVALID_VALUE);
  39
  40    for (auto p : mprops) {
  41       if (p.first != CL_CONTEXT_PLATFORM)
  42          throw error(CL_INVALID_PROPERTY);
  43    }
  44
  45    ret_error(errcode_ret, CL_SUCCESS);
  46    return new context(property_vector(mprops), devs);
  47
  48 } catch(error &e) {
  49    ret_error(errcode_ret, e);
  50    return NULL;
  51 }
  52
  53 PUBLIC cl_context
  54 clCreateContextFromType(const cl_context_properties *props,
  55                         cl_device_type type,
  56                         void (CL_CALLBACK *pfn_notify)(
  57                            const char *, const void *, size_t, void *),
  58                         void *user_data, cl_int *errcode_ret) try {
  59    cl_platform_id platform;
  60    cl_uint num_platforms;
  61    cl_device_id dev;
  62    cl_int ret;
  63
  64    ret = clGetPlatformIDs(1, &platform, &num_platforms);
  65    if (ret || !num_platforms)
  66       throw error(CL_INVALID_PLATFORM);
  67
  68    ret = clGetDeviceIDs(platform, type, 1, &dev, 0);
  69    if (ret)
  70       throw error(CL_DEVICE_NOT_FOUND);
  71
  72    return clCreateContext(props, 1, &dev, pfn_notify, user_data, errcode_ret);
  73
  74 } catch(error &e) {
  75    ret_error(errcode_ret, e);
  76    return NULL;
  77 }
  78
  79 PUBLIC cl_int
  80 clRetainContext(cl_context ctx) {
  81    if (!ctx)
  82       return CL_INVALID_CONTEXT;
  83
  84    ctx->retain();
  85    return CL_SUCCESS;
  86 }
  87
  88 PUBLIC cl_int
  89 clReleaseContext(cl_context ctx) {
  90    if (!ctx)
  91       return CL_INVALID_CONTEXT;
  92
  93    if (ctx->release())
  94       delete ctx;
  95
  96    return CL_SUCCESS;
  97 }
  98
  99 PUBLIC cl_int
 100 clGetContextInfo(cl_context ctx, cl_context_info param,
 101                  size_t size, void *r_buf, size_t *r_size) try {
 102    property_buffer buf { r_buf, size, r_size };
 103
 104    if (!ctx)
 105       return CL_INVALID_CONTEXT;
 106
 107    switch (param) {
 108    case CL_CONTEXT_REFERENCE_COUNT:
 109       buf.as_scalar<cl_uint>() = ctx->ref_count();
 110       break;
 111
 112    case CL_CONTEXT_NUM_DEVICES:
 113       buf.as_scalar<cl_uint>() = ctx->devs.size();
 114       break;
 115
 116    case CL_CONTEXT_DEVICES:
 117       buf.as_vector<cl_device_id>() = ctx->devs;
 118       break;
 119
 120    case CL_CONTEXT_PROPERTIES:
 121       buf.as_vector<cl_context_properties>() = ctx->props();
 122       break;
 123
 124    default:
 125       throw error(CL_INVALID_VALUE);
 126    }
 127
 128    return CL_SUCCESS;
 129
 130 } catch (error &e) {
 131    return e.get();
 132 }