Initial MSVC 2008 projects workspace

libl2c_utils/l2c_lock.cpp

@@ -0,0 +1,46 @@
+#include "pch.h"
+#include "l2c_lock.h"
+
+CriticalSection::CriticalSection()
+{
+	m_locked = false;
+	InitializeCriticalSectionAndSpinCount( &m_lock, 10 );
+}
+
+CriticalSection::~CriticalSection()
+{
+	if( m_locked ) LeaveCriticalSection( &m_lock );
+	m_locked = false;
+	DeleteCriticalSection( &m_lock );
+}
+
+void CriticalSection::Lock()
+{
+	if( m_locked ) return;
+	EnterCriticalSection( &m_lock );
+	m_locked = true;
+}
+
+void CriticalSection::Unlock()
+{
+	if( !m_locked ) return;
+	LeaveCriticalSection( &m_lock );
+	m_locked = false;
+}
+
+bool CriticalSection::TryLock( unsigned int wait_milliseconds )
+{
+	if( m_locked ) return true;
+	if( TryEnterCriticalSection( &m_lock ) ) return true;
+	if( wait_milliseconds > 0 )
+	{
+		Sleep( (DWORD)wait_milliseconds );
+		if( TryEnterCriticalSection( &m_lock ) ) return true;
+	}
+	return false;
+}
+
+bool CriticalSection::isLocked() const
+{
+	return m_locked;
+}