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Diffstat (limited to 'counters.c')
-rw-r--r-- | counters.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/counters.c b/counters.c new file mode 100644 index 0000000..1693c97 --- /dev/null +++ b/counters.c @@ -0,0 +1,61 @@ +// 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; +} |