os: implement LightSemaphore

libraries/libstratosphere/include/stratosphere/os/os_light_semaphore.hpp

@@ -0,0 +1,72 @@
+/*
+ * 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/os/os_light_semaphore_types.hpp>
+#include <stratosphere/os/os_light_semaphore_api.hpp>
+
+namespace ams::os {
+
+    class LightSemaphore {
+        NON_COPYABLE(LightSemaphore);
+        NON_MOVEABLE(LightSemaphore);
+        private:
+            LightSemaphoreType m_sema;
+        public:
+            explicit LightSemaphore(s32 count, s32 max_count) {
+                InitializeLightSemaphore(std::addressof(m_sema), count, max_count);
+            }
+
+            ~LightSemaphore() { FinalizeLightSemaphore(std::addressof(m_sema)); }
+
+            void Acquire() {
+                return os::AcquireLightSemaphore(std::addressof(m_sema));
+            }
+
+            bool TryAcquire() {
+                return os::TryAcquireLightSemaphore(std::addressof(m_sema));
+            }
+
+            bool TimedAcquire(TimeSpan timeout) {
+                return os::TimedAcquireLightSemaphore(std::addressof(m_sema), timeout);
+            }
+
+            void Release() {
+                return os::ReleaseLightSemaphore(std::addressof(m_sema));
+            }
+
+            void Release(s32 count) {
+                return os::ReleaseLightSemaphore(std::addressof(m_sema), count);
+            }
+
+            s32 GetCurrentCount() const {
+                return os::GetCurrentLightSemaphoreCount(std::addressof(m_sema));
+            }
+
+            operator LightSemaphoreType &() {
+                return m_sema;
+            }
+
+            operator const LightSemaphoreType &() const {
+                return m_sema;
+            }
+
+            LightSemaphoreType *GetBase() {
+                return std::addressof(m_sema);
+            }
+    };
+
+}