--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/SDK/completion_notify.cpp	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,75 @@
+#include "foobar2000-sdk-pch.h"
+#include "completion_notify.h"
+#include "main_thread_callback.h"
+
+void completion_notify::g_signal_completion_async(completion_notify_ptr p_notify,unsigned p_code) {
+	if (p_notify.is_valid()) {
+        fb2k::inMainThread([p_notify, p_code] { p_notify->on_completion(p_code); });
+	}
+}
+
+void completion_notify::on_completion_async(unsigned p_code) {
+    g_signal_completion_async(this, p_code);
+}
+
+
+completion_notify::ptr completion_notify_receiver::create_or_get_task(unsigned p_id) {
+    completion_notify_orphanable_ptr ptr;
+    if (!m_tasks.query(p_id,ptr)) {
+        ptr = completion_notify_create(this,p_id);
+        m_tasks.set(p_id,ptr);
+    }
+    return ptr;
+}
+
+completion_notify_ptr completion_notify_receiver::create_task(unsigned p_id) {
+    completion_notify_orphanable_ptr ptr;
+    if (m_tasks.query(p_id,ptr)) ptr->orphan();
+    ptr = completion_notify_create(this,p_id);
+    m_tasks.set(p_id,ptr);
+    return ptr;
+}
+
+bool completion_notify_receiver::have_task(unsigned p_id) const {
+    return m_tasks.have_item(p_id);
+}
+
+void completion_notify_receiver::orphan_task(unsigned p_id) {
+    completion_notify_orphanable_ptr ptr;
+    if (m_tasks.query(p_id,ptr)) {
+        ptr->orphan();
+        m_tasks.remove(p_id);
+    }
+}
+
+completion_notify_receiver::~completion_notify_receiver() {
+    orphan_all_tasks();
+}
+
+void completion_notify_receiver::orphan_all_tasks() {
+    m_tasks.enumerate(orphanfunc);
+    m_tasks.remove_all();
+}
+
+namespace {
+    using namespace fb2k;
+    
+    class completion_notify_func : public completion_notify {
+    public:
+        void on_completion(unsigned p_code) noexcept override {
+            m_func(p_code);
+        }
+
+        completionNotifyFunc_t m_func;
+    };
+}
+
+namespace fb2k {
+    
+    completion_notify::ptr makeCompletionNotify( completionNotifyFunc_t func ) {
+        auto n = fb2k::service_new< completion_notify_func >();
+        n->m_func = func;
+        return n;
+    }
+
+}