1 files changed, 113 insertions, 0 deletions
diff --git a/polyp/memblock.c b/polyp/memblock.c
new file mode 100644
index 00000000..8f24ff22
--- /dev/null
+++ b/polyp/memblock.c
@@ -0,0 +1,113 @@
+/* $Id$ */
+
+/***
+  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;
+}