From 22cb23eedb2eae7c79dc8fcf395be08bfc666256 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Sat, 14 Aug 2004 20:25:32 +0000
Subject: implement proper refcounting in polyplib split polyplib to multiple
 modules add some prelimenary documentation add doxygen support

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@123 fefdeb5f-60dc-0310-8127-8f9354f1896f
---
 polyp/polyplib-operation.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 polyp/polyplib-operation.c

(limited to 'polyp/polyplib-operation.c')

diff --git a/polyp/polyplib-operation.c b/polyp/polyplib-operation.c
new file mode 100644
index 00000000..994ac016
--- /dev/null
+++ b/polyp/polyplib-operation.c
@@ -0,0 +1,78 @@
+#include <assert.h>
+
+#include "xmalloc.h"
+#include "polyplib-internal.h"
+#include "polyplib-operation.h"
+
+struct pa_operation *pa_operation_new(struct pa_context *c, struct pa_stream *s) {
+    struct pa_operation *o;
+    assert(c);
+
+    o = pa_xmalloc(sizeof(struct pa_operation));
+    o->ref = 1;
+    o->context = pa_context_ref(c);
+    o->stream = s ? pa_stream_ref(s) : NULL;
+
+    o->state = PA_OPERATION_RUNNING;
+    o->userdata = NULL;
+    o->callback = NULL;
+
+    PA_LLIST_PREPEND(struct pa_operation, o->context->operations, o);
+    return pa_operation_ref(o);
+}
+
+struct pa_operation *pa_operation_ref(struct pa_operation *o) {
+    assert(o && o->ref >= 1);
+    o->ref++;
+    return o;
+}
+
+void pa_operation_unref(struct pa_operation *o) {
+    assert(o && o->ref >= 1);
+
+    if ((--(o->ref)) == 0) {
+        assert(!o->context);
+        assert(!o->stream);
+        free(o);
+    }
+}
+
+static void operation_set_state(struct pa_operation *o, enum pa_operation_state st) {
+    assert(o && o->ref >= 1);
+
+    if (st == o->state)
+        return;
+
+    if (!o->context)
+        return;
+
+    o->state = st;
+
+    if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED)) {
+        PA_LLIST_REMOVE(struct pa_operation, o->context->operations, o);
+        pa_context_unref(o->context);
+        if (o->stream)
+            pa_stream_unref(o->stream);
+        o->context = NULL;
+        o->stream = NULL;
+        o->callback = NULL;
+        o->userdata = NULL;
+
+        pa_operation_unref(o);
+    }
+}
+
+void pa_operation_cancel(struct pa_operation *o) {
+    assert(o && o->ref >= 1);
+    operation_set_state(o, PA_OPERATION_CANCELED);
+}
+
+void pa_operation_done(struct pa_operation *o) {
+    assert(o && o->ref >= 1);
+    operation_set_state(o, PA_OPERATION_DONE);
+}
+
+enum pa_operation_state pa_operation_get_state(struct pa_operation *o) {
+    assert(o && o->ref >= 1);
+    return o->state;
+}
-- 
cgit