sm: implement accurate request deferral semantics

stratosphere/sm/source/impl/sm_wait_list.hpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::sm::impl {
+
+    using ResumeFunction = Result (*)(os::WaitableHolderType *session_holder);
+
+    Result StartRegisterRetry(ServiceName service);
+    void   ProcessRegisterRetry(os::WaitableHolderType *session_holder);
+
+    void TriggerResume(ServiceName service);
+    void TestAndResume(ResumeFunction resume_function);
+
+}