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/*
* Copyright (c) 2014-2015 Advanced Micro Devices, Inc.
* All rights reserved.
*
* For use for simulation and test purposes only
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Author: Marc Orr
*/
__kernel void read_kernel(size_t code_size,
__global char *code_in,
__global int *key_arr,
__global char *msg_out,
__global int *chars_decoded)
{
size_t gid = get_global_id(0);
size_t my_idx = gid % code_size;
bool decode = 0;
__local atomic_int lcount;
if (get_local_id(0) == 0) {
lcount=0;
}
barrier(CLK_LOCAL_MEM_FENCE);
// read code
char mycode = code_in[my_idx];
// decode
int my_key = key_arr[my_idx];
if (my_key) {
decode = 1;
for (int n = 0; n < my_key; n++) {
mycode++;
}
}
// write out msg
msg_out[gid] = mycode;
if (decode) {
atomic_fetch_add((atomic_int *)(&lcount), 1);
}
barrier(CLK_LOCAL_MEM_FENCE);
if(get_local_id(0) == 0) {
int _lcount = atomic_load(&lcount);
atomic_fetch_add((atomic_int *)chars_decoded, _lcount);
}
}
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