os: implement BusyMutex

libraries/libstratosphere/include/stratosphere/os/impl/os_internal_busy_mutex.hpp

@@ -0,0 +1,50 @@
+/*
+ * 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 <vapours.hpp>
+
+#if defined(ATMOSPHERE_OS_HORIZON)
+    #include <stratosphere/os/impl/os_internal_busy_mutex_impl.os.horizon.hpp>
+#else
+    #error "Unknown OS for ams::os::impl::InternalBusyMutexImpl"
+#endif
+
+namespace ams::os::impl {
+
+    class InternalBusyMutex {
+        private:
+            InternalBusyMutexImpl m_impl;
+        public:
+            constexpr InternalBusyMutex() : m_impl() { /* ... */ }
+
+            constexpr void Initialize() { m_impl.Initialize(); }
+            constexpr void Finalize()   { m_impl.Finalize(); }
+
+            bool IsLocked() const { return m_impl.IsLocked(); }
+
+            ALWAYS_INLINE void Lock()    { return m_impl.Lock(); }
+            ALWAYS_INLINE bool TryLock() { return m_impl.TryLock(); }
+            ALWAYS_INLINE void Unlock()  { return m_impl.Unlock(); }
+
+            ALWAYS_INLINE void lock()     { return this->Lock(); }
+            ALWAYS_INLINE bool try_lock() { return this->TryLock(); }
+            ALWAYS_INLINE void unlock()   { return this->Unlock(); }
+    };
+
+    using InternalBusyMutexStorage = util::TypedStorage<InternalBusyMutex>;
+
+}

libraries/libstratosphere/include/stratosphere/os/impl/os_internal_busy_mutex_impl.os.horizon.hpp

@@ -0,0 +1,38 @@
+/*
+ * 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 <vapours.hpp>
+
+namespace ams::os::impl {
+
+    class InternalBusyMutexImpl {
+        private:
+            u32 m_value;
+        public:
+            constexpr InternalBusyMutexImpl() : m_value(0) { /* ... */ }
+
+            constexpr void Initialize() { m_value = 0; }
+            constexpr void Finalize() { /* ... */ }
+
+            constexpr bool IsLocked() const { return m_value != 0; }
+
+            void Lock();
+            bool TryLock();
+            void Unlock();
+    };
+
+}

libraries/libstratosphere/include/stratosphere/os/impl/os_internal_critical_section_impl.os.horizon.hpp

@@ -38,7 +38,7 @@ namespace ams::os::impl {
             constexpr InternalCriticalSectionImpl() : thread_handle(svc::InvalidHandle) { /* ... */ }
 
             constexpr void Initialize() { this->thread_handle = svc::InvalidHandle; }
-            constexpr void Finalize() { /* ... */}
+            constexpr void Finalize() { /* ... */ }
 
             void Enter();
             bool TryEnter();