1 files changed, 187 insertions, 0 deletions

diff --git a/source/OSSupport/CriticalSection.cpp b/source/OSSupport/CriticalSection.cpp
new file mode 100644
index 000000000..f87a2b3ba
--- /dev/null
+++ b/source/OSSupport/CriticalSection.cpp
@@ -0,0 +1,187 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+#include "IsThread.h"
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cCriticalSection:
+
+cCriticalSection::cCriticalSection()
+{
+#ifdef _WIN32
+	InitializeCriticalSection( &m_CriticalSection );
+#else
+	m_Attributes = new pthread_mutexattr_t;
+	pthread_mutexattr_init((pthread_mutexattr_t*)m_Attributes);
+	pthread_mutexattr_settype((pthread_mutexattr_t*)m_Attributes, PTHREAD_MUTEX_RECURSIVE);
+
+    m_CriticalSectionPtr = new pthread_mutex_t;
+    if( pthread_mutex_init( (pthread_mutex_t*)m_CriticalSectionPtr, (pthread_mutexattr_t*)m_Attributes ) != 0 )
+    {
+        LOG("ERROR: Could not initialize Critical Section!");
+    }
+#endif
+}
+
+
+
+
+
+cCriticalSection::~cCriticalSection()
+{
+#ifdef _WIN32
+	DeleteCriticalSection( &m_CriticalSection );
+#else
+    if( pthread_mutex_destroy( (pthread_mutex_t*)m_CriticalSectionPtr ) != 0 )
+    {
+        LOG("ERROR: Could not destroy Critical Section!");
+    }
+    delete (pthread_mutex_t*)m_CriticalSectionPtr;
+	pthread_mutexattr_destroy( (pthread_mutexattr_t*)m_Attributes );
+	delete (pthread_mutexattr_t*)m_Attributes;
+#endif
+}
+
+
+
+
+
+void cCriticalSection::Lock()
+{
+	#ifdef _WIN32
+		EnterCriticalSection( &m_CriticalSection );
+	#else
+		pthread_mutex_lock( (pthread_mutex_t*)m_CriticalSectionPtr );
+	#endif
+	
+	#ifdef _DEBUG
+		m_IsLocked = true;
+		m_OwningThreadID = cIsThread::GetCurrentID();
+	#endif  // _DEBUG
+}
+
+
+
+
+
+void cCriticalSection::Unlock()
+{
+	#ifdef _DEBUG
+		m_IsLocked = false;
+	#endif  // _DEBUG
+	
+	#ifdef _WIN32
+		LeaveCriticalSection( &m_CriticalSection );
+	#else
+		pthread_mutex_unlock( (pthread_mutex_t*)m_CriticalSectionPtr );
+	#endif
+}
+
+
+
+
+
+#ifdef _DEBUG
+bool cCriticalSection::IsLocked(void)
+{
+	return m_IsLocked;
+}
+
+
+
+
+
+bool cCriticalSection::IsLockedByCurrentThread(void)
+{
+	return m_IsLocked && (m_OwningThreadID == cIsThread::GetCurrentID());
+}
+#endif  // _DEBUG
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cCSLock
+
+cCSLock::cCSLock(cCriticalSection * a_CS) 
+	: m_CS(a_CS)
+	, m_IsLocked(false)
+{
+	Lock();
+}
+
+
+
+
+
+cCSLock::cCSLock(cCriticalSection & a_CS) 
+	: m_CS(&a_CS)
+	, m_IsLocked(false)
+{
+	Lock();
+}
+
+
+
+
+
+cCSLock::~cCSLock()
+{
+	if (!m_IsLocked)
+	{
+		return;
+	}
+	Unlock();
+}
+
+
+
+
+
+void cCSLock::Lock(void)
+{
+	ASSERT(!m_IsLocked);
+	m_IsLocked = true;
+	m_CS->Lock();
+}
+
+
+
+
+
+void cCSLock::Unlock(void)
+{
+	ASSERT(m_IsLocked);
+	m_IsLocked = false;
+	m_CS->Unlock();
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cCSUnlock:
+
+cCSUnlock::cCSUnlock(cCSLock & a_Lock) :
+	m_Lock(a_Lock)
+{
+	m_Lock.Unlock();
+}
+
+
+
+
+
+cCSUnlock::~cCSUnlock()
+{
+	m_Lock.Lock();
+}
+
+
+
+