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    const auto notify = (!pfn_notify ? context::notify_action() :
  49                         [=](const char *s) {
  50                            pfn_notify(s, NULL, 0, user_data);
  51                         });
  52
  53    ret_error(r_errcode, CL_SUCCESS);
  54    return desc(new context(props, devs, notify));
  55
  56 } catch (error &e) {
  57    ret_error(r_errcode, e);
  58    return NULL;
  59 }
  60
  61 CLOVER_API cl_context
  62 clCreateContextFromType(const cl_context_properties *d_props,
  63                         cl_device_type type,
  64                         void (CL_CALLBACK *pfn_notify)(
  65                            const char *, const void *, size_t, void *),
  66                         void *user_data, cl_int *r_errcode) try {
  67    cl_platform_id d_platform;
  68    cl_uint num_platforms;
  69    cl_int ret;
  70    std::vector<cl_device_id> devs;
  71    cl_uint num_devices;
  72
  73    ret = clGetPlatformIDs(1, &d_platform, &num_platforms);
  74    if (ret || !num_platforms)
  75       throw error(CL_INVALID_PLATFORM);
  76
  77    ret = clGetDeviceIDs(d_platform, type, 0, NULL, &num_devices);
  78    if (ret)
  79       throw error(CL_DEVICE_NOT_FOUND);
  80    devs.resize(num_devices);
  81    ret = clGetDeviceIDs(d_platform, type, num_devices, devs.data(), 0);
  82    if (ret)
  83       throw error(CL_DEVICE_NOT_FOUND);
  84
  85    return clCreateContext(d_props, num_devices, devs.data(), pfn_notify,
  86                           user_data, r_errcode);
  87
  88 } catch (error &e) {
  89    ret_error(r_errcode, e);
  90    return NULL;
  91 }
  92
  93 CLOVER_API cl_int
  94 clRetainContext(cl_context d_ctx) try {
  95    obj(d_ctx).retain();
  96    return CL_SUCCESS;
  97
  98 } catch (error &e) {
  99    return e.get();
 100 }
 101
 102 CLOVER_API cl_int
 103 clReleaseContext(cl_context d_ctx) try {
 104    if (obj(d_ctx).release())
 105       delete pobj(d_ctx);
 106
 107    return CL_SUCCESS;
 108
 109 } catch (error &e) {
 110    return e.get();
 111 }
 112
 113 CLOVER_API cl_int
 114 clGetContextInfo(cl_context d_ctx, cl_context_info param,
 115                  size_t size, void *r_buf, size_t *r_size) try {
 116    property_buffer buf { r_buf, size, r_size };
 117    auto &ctx = obj(d_ctx);
 118
 119    switch (param) {
 120    case CL_CONTEXT_REFERENCE_COUNT:
 121       buf.as_scalar<cl_uint>() = ctx.ref_count();
 122       break;
 123
 124    case CL_CONTEXT_NUM_DEVICES:
 125       buf.as_scalar<cl_uint>() = ctx.devices().size();
 126       break;
 127
 128    case CL_CONTEXT_DEVICES:
 129       buf.as_vector<cl_device_id>() = descs(ctx.devices());
 130       break;
 131
 132    case CL_CONTEXT_PROPERTIES:
 133       buf.as_vector<cl_context_properties>() = desc(ctx.properties());
 134       break;
 135
 136    default:
 137       throw error(CL_INVALID_VALUE);
 138    }
 139
 140    return CL_SUCCESS;
 141
 142 } catch (error &e) {
 143    return e.get();
 144 }