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/*
* Copyright © 2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "cl_context.h"
#include "cl_device_id.h"
#include "cl_alloc.h"
cl_context
clCreateContext(const cl_context_properties *properties,
cl_uint num_devices,
const cl_device_id *devices,
void (*pfn_notify)(const char *, const void *, size_t, void *),
void *user_data,
cl_int *errcode_ret)
{
cl_int err = CL_SUCCESS;
cl_context context = NULL;
do {
/* Assure parameters correctness */
if (devices == NULL) {
err = CL_INVALID_VALUE;
break;
}
if (num_devices == 0) {
err = CL_INVALID_VALUE;
break;
}
if (pfn_notify == NULL && user_data != NULL) {
err = CL_INVALID_VALUE;
break;
}
err = cl_devices_list_check(num_devices, devices);
if (err != CL_SUCCESS)
break;
context = cl_create_context(properties, num_devices, devices, pfn_notify, user_data, &err);
} while (0);
if (errcode_ret)
*errcode_ret = err;
return context;
}
cl_context
clCreateContextFromType(const cl_context_properties *properties,
cl_device_type device_type,
void(CL_CALLBACK *pfn_notify)(const char *, const void *, size_t, void *),
void *user_data,
cl_int *errcode_ret)
{
cl_context context = NULL;
cl_int err = CL_SUCCESS;
cl_device_id *devices = NULL;
cl_uint num_devices = 0;
const cl_device_type valid_type = CL_DEVICE_TYPE_GPU | CL_DEVICE_TYPE_CPU | CL_DEVICE_TYPE_ACCELERATOR |
CL_DEVICE_TYPE_DEFAULT | CL_DEVICE_TYPE_CUSTOM;
do {
/* Assure parameters correctness */
if (pfn_notify == NULL && user_data != NULL) {
err = CL_INVALID_VALUE;
break;
}
if ((device_type & valid_type) == 0) {
err = CL_INVALID_DEVICE_TYPE;
break;
}
/* Get the devices num first. */
err = cl_get_device_ids(NULL, device_type, 0, NULL, &num_devices);
if (err != CL_SUCCESS)
break;
assert(num_devices > 0);
devices = cl_malloc(num_devices * sizeof(cl_device_id));
err = cl_get_device_ids(NULL, device_type, num_devices, &devices[0], &num_devices);
if (err != CL_SUCCESS)
break;
context = cl_create_context(properties, num_devices, devices, pfn_notify, user_data, &err);
} while (0);
if (devices)
cl_free(devices);
if (errcode_ret)
*errcode_ret = err;
return context;
}
cl_int
clRetainContext(cl_context context)
{
if (!CL_OBJECT_IS_CONTEXT(context)) {
return CL_INVALID_CONTEXT;
}
cl_context_add_ref(context);
return CL_SUCCESS;
}
cl_int
clReleaseContext(cl_context context)
{
if (!CL_OBJECT_IS_CONTEXT(context)) {
return CL_INVALID_CONTEXT;
}
cl_context_delete(context);
return CL_SUCCESS;
}
cl_int
clGetContextInfo(cl_context context,
cl_context_info param_name,
size_t param_value_size,
void *param_value,
size_t *param_value_size_ret)
{
const void *src_ptr = NULL;
size_t src_size = 0;
cl_uint n, ref;
cl_context_properties p;
if (!CL_OBJECT_IS_CONTEXT(context)) {
return CL_INVALID_CONTEXT;
}
if (param_name == CL_CONTEXT_DEVICES) {
src_ptr = context->devices;
src_size = sizeof(cl_device_id) * context->device_num;
} else if (param_name == CL_CONTEXT_NUM_DEVICES) {
n = context->device_num;
src_ptr = &n;
src_size = sizeof(cl_uint);
} else if (param_name == CL_CONTEXT_REFERENCE_COUNT) {
ref = CL_OBJECT_GET_REF(context);
src_ptr = &ref;
src_size = sizeof(cl_uint);
} else if (param_name == CL_CONTEXT_PROPERTIES) {
if (context->prop_len > 0) {
src_ptr = context->prop_user;
src_size = sizeof(cl_context_properties) * context->prop_len;
} else {
p = 0;
src_ptr = &p;
src_size = sizeof(cl_context_properties);
}
} else {
return CL_INVALID_VALUE;
}
return cl_get_info_helper(src_ptr, src_size,
param_value, param_value_size, param_value_size_ret);
}
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