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#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <vector>
#include <string.h>
#include "error.h"
#include "utils.h"
#include "data_store_int.h"
data_store_int::data_store_int(int n_samples_in, int interval_in) : n_samples(n_samples_in), interval(interval_in)
{
values = (long long int *)calloc(n_samples, sizeof(long long int));
counts = (int *)calloc(n_samples, sizeof(int));
valid = (bool *)calloc(n_samples, sizeof(bool));
cur_t = 0;
}
data_store_int::data_store_int(std::string file)
{
FILE *fh = fopen(file.c_str(), "r");
if (!fh)
error_exit("failed to open %s", file.c_str());
if (!get_int(fh, &n_samples))
error_exit("short read on %s", file.c_str());
if (!get_int(fh, &interval))
error_exit("short read on %s", file.c_str());
if (!get_int(fh, &cur_t))
error_exit("short read on %s", file.c_str());
values = (long long int *)calloc(n_samples, sizeof(long long int));
counts = (int *)calloc(n_samples, sizeof(int));
valid = (bool *)calloc(n_samples, sizeof(bool));
for(int index=0; index<n_samples; index++)
{
if (!get_long_long_int(fh, &values[index]))
error_exit("short read on %s", file.c_str());
if (!get_int(fh, &counts[index]))
error_exit("short read on %s", file.c_str());
if (!get_bool(fh, &valid[index]))
error_exit("short read on %s", file.c_str());
}
fclose(fh);
}
data_store_int::~data_store_int()
{
free(counts);
free(values);
free(valid);
}
void data_store_int::dump(std::string file)
{
FILE *fh = fopen(file.c_str(), "wb");
if (!fh)
error_exit("faile to create file %s", file.c_str());
put_int(fh, n_samples);
put_int(fh, interval);
put_int(fh, cur_t);
for(int index=0; index<n_samples; index++)
{
put_long_long_int(fh, values[index]);
put_int(fh, counts[index]);
put_bool(fh, valid[index]);
}
fclose(fh);
}
int data_store_int::init_data(int t)
{
int cur_index = (t / interval) % n_samples;
int prev_index = cur_t != -1 ? (cur_t / interval) % n_samples : -1;
if (cur_index != prev_index && prev_index != -1)
{
// if the interval between now and previous value
// is more than a second, then invalidate values
// in between
if (cur_index > prev_index)
{
int n = (cur_index - prev_index) - 1;
if (n > 0)
{
memset(&values[prev_index + 1], 0x00, sizeof(long long int) * n);
memset(&counts[prev_index + 1], 0x00, sizeof(int) * n);
memset(&valid[prev_index + 1], 0x00, sizeof(bool) * n);
}
}
else
{
int n = n_samples - prev_index;
memset(&values[prev_index], 0x00, sizeof(long long int) * n);
memset(&counts[prev_index], 0x00, sizeof(int) * n);
memset(&valid[prev_index], 0x00, sizeof(bool) * n);
memset(&values[0], 0x00, sizeof(long long int) * cur_index);
memset(&counts[0], 0x00, sizeof(int) * cur_index);
memset(&valid[0], 0x00, sizeof(bool) * cur_index);
}
values[cur_index] = 0;
counts[cur_index] = 0;
valid[cur_index] = true;
}
cur_t = t;
return cur_index;
}
void data_store_int::add_avg(int t, int value)
{
int index = init_data(t);
values[index] += value;
counts[index]++;
}
void data_store_int::add_sum(int t, int value)
{
int index = init_data(t);
values[index] += value;
counts[index] = 1;
}
bool data_store_int::get(int index, double *value)
{
if (counts[index])
{
*value = double(values[index]) / double(counts[index]);
return true;
}
return false;
}
void data_store_int::get_data(long int **t, double **v, int *n)
{
int offset_index = (cur_t / interval) % n_samples;
*t = (long int *)malloc(sizeof(long int) * n_samples);
*v = (double *)malloc(sizeof(double) * n_samples);
*n = 0;
long int start_t = cur_t - n_samples * interval;
for(int index=0; index<n_samples; index++)
{
int cur_index = (offset_index + 1 + index) % n_samples;
if (valid[cur_index])
{
(*t)[*n] = start_t + index * interval;
(*v)[*n] = double(values[cur_index]) / double(counts[cur_index]);
(*n)++;
}
}
}
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