Semi-working base for bgfx renderer

2015-09-08 16:13:59 +02:00
parent c7f17c8ef0
commit c24b039005
47 changed files with 11176 additions and 43 deletions
@@ -0,0 +1,148 @@
+/*
+ * Copyright 2010-2015 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#ifndef BX_MUTEX_H_HEADER_GUARD
+#define BX_MUTEX_H_HEADER_GUARD
+
+#include "bx.h"
+#include "cpu.h"
+#include "os.h"
+#include "sem.h"
+
+#if BX_CONFIG_SUPPORTS_THREADING
+
+#if BX_PLATFORM_NACL || BX_PLATFORM_LINUX || BX_PLATFORM_ANDROID || BX_PLATFORM_OSX
+#	include <pthread.h>
+#elif BX_PLATFORM_WINDOWS || BX_PLATFORM_XBOX360 || BX_PLATFORM_WINRT
+#	include <errno.h>
+#endif // BX_PLATFORM_
+
+namespace bx
+{
+#if BX_PLATFORM_WINDOWS || BX_PLATFORM_XBOX360 || BX_PLATFORM_WINRT
+	typedef CRITICAL_SECTION pthread_mutex_t;
+	typedef unsigned pthread_mutexattr_t;
+
+	inline int pthread_mutex_lock(pthread_mutex_t* _mutex)
+	{
+		EnterCriticalSection(_mutex);
+		return 0;
+	}
+
+	inline int pthread_mutex_unlock(pthread_mutex_t* _mutex)
+	{
+		LeaveCriticalSection(_mutex);
+		return 0;
+	}
+
+	inline int pthread_mutex_trylock(pthread_mutex_t* _mutex)
+	{
+		return TryEnterCriticalSection(_mutex) ? 0 : EBUSY;
+	}
+
+	inline int pthread_mutex_init(pthread_mutex_t* _mutex, pthread_mutexattr_t* /*_attr*/)
+	{
+#if BX_PLATFORM_WINRT
+		InitializeCriticalSectionEx(_mutex, 4000, 0);   // docs recommend 4000 spincount as sane default
+#else
+		InitializeCriticalSection(_mutex);
+#endif
+		return 0;
+	}
+
+	inline int pthread_mutex_destroy(pthread_mutex_t* _mutex)
+	{
+		DeleteCriticalSection(_mutex);
+		return 0;
+	}
+#endif // BX_PLATFORM_
+
+	class Mutex
+	{
+		BX_CLASS(Mutex
+			, NO_COPY
+			, NO_ASSIGNMENT
+			);
+
+	public:
+		Mutex()
+		{
+			pthread_mutex_init(&m_handle, NULL);
+		}
+
+		~Mutex()
+		{
+			pthread_mutex_destroy(&m_handle);
+		}
+
+		void lock()
+		{
+			pthread_mutex_lock(&m_handle);
+		}
+
+		void unlock()
+		{
+			pthread_mutex_unlock(&m_handle);
+		}
+
+	private:
+		pthread_mutex_t m_handle;
+	};
+
+	class MutexScope
+	{
+		BX_CLASS(MutexScope
+			, NO_DEFAULT_CTOR
+			, NO_COPY
+			, NO_ASSIGNMENT
+			);
+
+	public:
+		MutexScope(Mutex& _mutex)
+			: m_mutex(_mutex)
+		{
+			m_mutex.lock();
+		}
+
+		~MutexScope()
+		{
+			m_mutex.unlock();
+		}
+
+	private:
+		Mutex& m_mutex;
+	};
+
+	typedef Mutex LwMutex;
+
+	class LwMutexScope
+	{
+		BX_CLASS(LwMutexScope
+			, NO_DEFAULT_CTOR
+			, NO_COPY
+			, NO_ASSIGNMENT
+			);
+
+	public:
+		LwMutexScope(LwMutex& _mutex)
+			: m_mutex(_mutex)
+		{
+			m_mutex.lock();
+		}
+
+		~LwMutexScope()
+		{
+			m_mutex.unlock();
+		}
+
+	private:
+		LwMutex& m_mutex;
+	};
+
+} // namespace bx
+
+#endif // BX_CONFIG_SUPPORTS_THREADING
+
+#endif // BX_MUTEX_H_HEADER_GUARD