big s/polyp/pulse/g

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/pulsecore/memblock.c

@@ -0,0 +1,173 @@
+/* $Id$ */
+
+/***
+  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;
+}