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// Copyright (C) 2010-2016 Joel Rosdahl
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program 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 General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
// A simple array of unsigned integers used for the statistics counters.
#include "ccache.h"
// Allocate and initialize a struct counters. Data entries up to the size are
// set to 0.
struct counters *
counters_init(size_t initial_size)
{
struct counters *c = x_malloc(sizeof(*c));
c->data = NULL;
c->size = 0;
c->allocated = 0;
counters_resize(c, initial_size);
return c;
}
// Free a counters struct.
void
counters_free(struct counters *c)
{
free(c->data);
free(c);
}
// Set a new size. New data entries are set to 0.
void
counters_resize(struct counters *c, size_t new_size)
{
if (new_size > c->size) {
bool realloc = false;
while (c->allocated < new_size) {
c->allocated += 32 + c->allocated;
realloc = true;
}
if (realloc) {
c->data = x_realloc(c->data, c->allocated * sizeof(c->data[0]));
}
for (size_t i = c->size; i < new_size; i++) {
c->data[i] = 0;
}
}
c->size = new_size;
}
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