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/* $Id$ */
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
PulseAudio 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; 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 <pulse/xmalloc.h>
#include "memblock.h"
static void stat_add(pa_memblock*m, pa_memblock_stat *s) {
assert(m);
if (!s) {
m->stat = NULL;
return;
}
m->stat = pa_memblock_stat_ref(s);
s->total++;
s->allocated++;
s->total_size += m->length;
s->allocated_size += m->length;
}
static void stat_remove(pa_memblock *m) {
assert(m);
if (!m->stat)
return;
m->stat->total--;
m->stat->total_size -= m->length;
pa_memblock_stat_unref(m->stat);
m->stat = NULL;
}
pa_memblock *pa_memblock_new(size_t length, pa_memblock_stat*s) {
pa_memblock *b = pa_xmalloc(sizeof(pa_memblock)+length);
b->type = PA_MEMBLOCK_APPENDED;
b->ref = 1;
b->length = length;
b->data = b+1;
b->free_cb = NULL;
b->read_only = 0;
stat_add(b, s);
return b;
}
pa_memblock *pa_memblock_new_dynamic(void *d, size_t length, pa_memblock_stat*s) {
pa_memblock *b = pa_xmalloc(sizeof(pa_memblock));
b->type = PA_MEMBLOCK_DYNAMIC;
b->ref = 1;
b->length = length;
b->data = d;
b->free_cb = NULL;
b->read_only = 0;
stat_add(b, s);
return b;
}
pa_memblock *pa_memblock_new_fixed(void *d, size_t length, int read_only, pa_memblock_stat*s) {
pa_memblock *b = pa_xmalloc(sizeof(pa_memblock));
b->type = PA_MEMBLOCK_FIXED;
b->ref = 1;
b->length = length;
b->data = d;
b->free_cb = NULL;
b->read_only = read_only;
stat_add(b, s);
return b;
}
pa_memblock *pa_memblock_new_user(void *d, size_t length, void (*free_cb)(void *p), int read_only, pa_memblock_stat*s) {
pa_memblock *b;
assert(d && length && free_cb);
b = pa_xmalloc(sizeof(pa_memblock));
b->type = PA_MEMBLOCK_USER;
b->ref = 1;
b->length = length;
b->data = d;
b->free_cb = free_cb;
b->read_only = read_only;
stat_add(b, s);
return b;
}
pa_memblock* pa_memblock_ref(pa_memblock*b) {
assert(b);
assert(b->ref >= 1);
b->ref++;
return b;
}
void pa_memblock_unref(pa_memblock*b) {
assert(b);
assert(b->ref >= 1);
if ((--(b->ref)) == 0) {
stat_remove(b);
if (b->type == PA_MEMBLOCK_USER) {
assert(b->free_cb);
b->free_cb(b->data);
} else if (b->type == PA_MEMBLOCK_DYNAMIC)
pa_xfree(b->data);
pa_xfree(b);
}
}
void pa_memblock_unref_fixed(pa_memblock *b) {
assert(b && b->ref >= 1 && b->type == PA_MEMBLOCK_FIXED);
if (b->ref == 1)
pa_memblock_unref(b);
else {
b->data = pa_xmemdup(b->data, b->length);
b->type = PA_MEMBLOCK_DYNAMIC;
b->ref--;
}
}
pa_memblock_stat* pa_memblock_stat_new(void) {
pa_memblock_stat *s;
s = pa_xmalloc(sizeof(pa_memblock_stat));
s->ref = 1;
s->total = s->total_size = s->allocated = s->allocated_size = 0;
return s;
}
void pa_memblock_stat_unref(pa_memblock_stat *s) {
assert(s && s->ref >= 1);
if (!(--(s->ref))) {
assert(!s->total);
pa_xfree(s);
}
}
pa_memblock_stat * pa_memblock_stat_ref(pa_memblock_stat *s) {
assert(s);
s->ref++;
return s;
}
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