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//
// Copyright (c) 2017 The Khronos Group Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "harness/compat.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "procs.h"
const char *loop_kernel_code =
"__kernel void test_loop(__global int *src, __global int *loopindx, __global int *loopcnt, __global int *dst)\n"
"{\n"
" int tid = get_global_id(0);\n"
" int n = get_global_size(0);\n"
" int i, j;\n"
"\n"
" dst[tid] = 0;\n"
" for (i=0,j=loopindx[tid]; i<loopcnt[tid]; i++,j++)\n"
" {\n"
" if (j >= n)\n"
" j = 0;\n"
" dst[tid] += src[j];\n"
" }\n"
"\n"
"}\n";
int
verify_loop(int *inptr, int *loopindx, int *loopcnt, int *outptr, int n)
{
int r, i, j, k;
for (i=0; i<n; i++)
{
r = 0;
for (j=0,k=loopindx[i]; j<loopcnt[i]; j++,k++)
{
if (k >= n)
k = 0;
r += inptr[k];
}
if (r != outptr[i])
{
log_error("LOOP test failed: %d found, expected %d\n", outptr[i], r);
return -1;
}
}
log_info("LOOP test passed\n");
return 0;
}
int test_loop(cl_device_id device, cl_context context, cl_command_queue queue, int num_elements)
{
cl_mem streams[4];
cl_int *input_ptr, *loop_indx, *loop_cnt, *output_ptr;
cl_program program;
cl_kernel kernel;
size_t threads[1];
int err, i;
size_t length = sizeof(cl_int) * num_elements;
input_ptr = (cl_int*)malloc(length);
loop_indx = (cl_int*)malloc(length);
loop_cnt = (cl_int*)malloc(length);
output_ptr = (cl_int*)malloc(length);
streams[0] = clCreateBuffer(context, CL_MEM_READ_WRITE, length, NULL, NULL);
if (!streams[0])
{
log_error("clCreateBuffer failed\n");
return -1;
}
streams[1] = clCreateBuffer(context, CL_MEM_READ_WRITE, length, NULL, NULL);
if (!streams[1])
{
log_error("clCreateBuffer failed\n");
return -1;
}
streams[2] = clCreateBuffer(context, CL_MEM_READ_WRITE, length, NULL, NULL);
if (!streams[2])
{
log_error("clCreateBuffer failed\n");
return -1;
}
streams[3] = clCreateBuffer(context, CL_MEM_READ_WRITE, length, NULL, NULL);
if (!streams[3])
{
log_error("clCreateBuffer failed\n");
return -1;
}
MTdata d = init_genrand( gRandomSeed );
for (i=0; i<num_elements; i++)
{
input_ptr[i] = (int)genrand_int32(d);
loop_indx[i] = (int)get_random_float(0, num_elements-1, d);
loop_cnt[i] = (int)get_random_float(0, num_elements/32, d);
}
free_mtdata(d); d = NULL;
err = clEnqueueWriteBuffer(queue, streams[0], CL_TRUE, 0, length, input_ptr, 0, NULL, NULL);
if (err != CL_SUCCESS)
{
log_error("clEnqueueWriteBuffer failed\n");
return -1;
}
err = clEnqueueWriteBuffer(queue, streams[1], CL_TRUE, 0, length, loop_indx, 0, NULL, NULL);
if (err != CL_SUCCESS)
{
log_error("clEnqueueWriteBuffer failed\n");
return -1;
}
err = clEnqueueWriteBuffer(queue, streams[2], CL_TRUE, 0, length, loop_cnt, 0, NULL, NULL);
if (err != CL_SUCCESS)
{
log_error("clEnqueueWriteBuffer failed\n");
return -1;
}
err = create_single_kernel_helper(context, &program, &kernel, 1, &loop_kernel_code, "test_loop" );
if (err)
return -1;
err = clSetKernelArg(kernel, 0, sizeof streams[0], &streams[0]);
err |= clSetKernelArg(kernel, 1, sizeof streams[1], &streams[1]);
err |= clSetKernelArg(kernel, 2, sizeof streams[2], &streams[2]);
err |= clSetKernelArg(kernel, 3, sizeof streams[3], &streams[3]);
if (err != CL_SUCCESS)
{
log_error("clSetKernelArgs failed\n");
return -1;
}
threads[0] = (unsigned int)num_elements;
err = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, threads, NULL, 0, NULL, NULL);
if (err != CL_SUCCESS)
{
log_error("clEnqueueNDRangeKernel failed\n");
return -1;
}
err = clEnqueueReadBuffer(queue, streams[3], CL_TRUE, 0, length, output_ptr, 0, NULL, NULL);
if (err != CL_SUCCESS)
{
log_error("clReadArray failed\n");
return -1;
}
err = verify_loop(input_ptr, loop_indx, loop_cnt, output_ptr, num_elements);
// cleanup
clReleaseMemObject(streams[0]);
clReleaseMemObject(streams[1]);
clReleaseMemObject(streams[2]);
clReleaseMemObject(streams[3]);
clReleaseKernel(kernel);
clReleaseProgram(program);
free(input_ptr);
free(loop_indx);
free(loop_cnt);
free(output_ptr);
return err;
}
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