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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio 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 2 of the License,
or (at your option) any later version.
polypaudio 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 polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "memblock.h"
static unsigned memblock_count = 0, memblock_total = 0;
struct pa_memblock *pa_memblock_new(size_t length) {
struct pa_memblock *b = malloc(sizeof(struct pa_memblock)+length);
b->type = PA_MEMBLOCK_APPENDED;
b->ref = 1;
b->length = length;
b->data = b+1;
memblock_count++;
memblock_total += length;
return b;
}
struct pa_memblock *pa_memblock_new_fixed(void *d, size_t length) {
struct pa_memblock *b = malloc(sizeof(struct pa_memblock));
b->type = PA_MEMBLOCK_FIXED;
b->ref = 1;
b->length = length;
b->data = d;
memblock_count++;
memblock_total += length;
return b;
}
struct pa_memblock *pa_memblock_new_dynamic(void *d, size_t length) {
struct pa_memblock *b = malloc(sizeof(struct pa_memblock));
b->type = PA_MEMBLOCK_DYNAMIC;
b->ref = 1;
b->length = length;
b->data = d;
memblock_count++;
memblock_total += length;
return b;
}
struct pa_memblock* pa_memblock_ref(struct pa_memblock*b) {
assert(b && b->ref >= 1);
b->ref++;
return b;
}
void pa_memblock_unref(struct pa_memblock*b) {
assert(b && b->ref >= 1);
b->ref--;
if (b->ref == 0) {
if (b->type == PA_MEMBLOCK_DYNAMIC)
free(b->data);
memblock_count--;
memblock_total -= b->length;
free(b);
}
}
void pa_memblock_unref_fixed(struct pa_memblock *b) {
void *d;
assert(b && b->ref >= 1);
if (b->ref == 1) {
pa_memblock_unref(b);
return;
} else {
d = malloc(b->length);
assert(d);
memcpy(d, b->data, b->length);
b->data = d;
b->type = PA_MEMBLOCK_DYNAMIC;
b->ref--;
}
}
unsigned pa_memblock_get_count(void) {
return memblock_count;
}
unsigned pa_memblock_get_total(void) {
return memblock_total;
}
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