Cleanup semaphore<> (sema.h) and mutex.h (shared_mutex)

Remove semaphore_lock and writer_lock classes, replace with std::lock_guard
Change semaphore<> interface to Lockable (+ exotic try_unlock method)

Utilities/Log.cpp

@@ -188,7 +188,7 @@ namespace logs
 
 	void reset()
 	{
-		semaphore_lock lock(g_mutex);
+		std::lock_guard lock(g_mutex);
 
 		for (auto&& pair : get_logger()->channels)
 		{
@@ -198,7 +198,7 @@ namespace logs
 
 	void set_level(const std::string& ch_name, level value)
 	{
-		semaphore_lock lock(g_mutex);
+		std::lock_guard lock(g_mutex);
 
 		get_logger()->channels[ch_name].set_level(value);
 	}
@@ -208,7 +208,7 @@ namespace logs
 	{
 		if (!g_init)
 		{
-			semaphore_lock lock(g_mutex);
+			std::lock_guard lock(g_mutex);
 			get_logger()->messages.clear();
 			g_init = true;
 		}
@@ -224,7 +224,7 @@ void logs::listener::add(logs::listener* _new)
 	// Get first (main) listener
 	listener* lis = get_logger();
 
-	semaphore_lock lock(g_mutex);
+	std::lock_guard lock(g_mutex);
 
 	// Install new listener at the end of linked list
 	while (lis->m_next || !lis->m_next.compare_and_swap_test(nullptr, _new))
@@ -247,7 +247,7 @@ void logs::message::broadcast(const char* fmt, const fmt_type_info* sup, const u
 	// Register channel
 	if (ch->enabled == level::_uninit)
 	{
-		semaphore_lock lock(g_mutex);
+		std::lock_guard lock(g_mutex);
 
 		auto& info = get_logger()->channels[ch->name];
 
@@ -278,7 +278,7 @@ void logs::message::broadcast(const char* fmt, const fmt_type_info* sup, const u
 
 	if (!g_init)
 	{
-		semaphore_lock lock(g_mutex);
+		std::lock_guard lock(g_mutex);
 
 		if (!g_init)
 		{
@@ -468,7 +468,7 @@ logs::file_writer::~file_writer()
 
 bool logs::file_writer::flush(u64 bufv)
 {
-	semaphore_lock lock(m_m);
+	std::lock_guard lock(m_m);
 
 	const u64 st  = +m_out;
 	const u64 end = std::min<u64>((st + s_log_size) & ~(s_log_size - 1), bufv >> 24);