Way to miss two files KLS - doh

common/ipc_mutex.h

@@ -0,0 +1,47 @@
+#ifndef _MUTEX_H_
+#define _MUTEX_H_
+
+#include <string>
+
+namespace EQEmu {
+    
+    //! Interprocess Named Binary Semaphore (Mutex)
+    /*!
+        Important to note: while this can be used to synchronize processes, it is not in itself re-entrant or thread-safe 
+        and thus should be used from one thread and non-recursively.  It was intended to be a simple synchronization method
+        for our MemoryMappedFile loading.
+    */
+    class IPCMutex {
+        struct Implementation;
+    public:
+        //! Constructor
+        /*!
+            Creates a named binary semaphore, basically a semaphore that is init S <- 1
+        \param name The name of this mutex.
+        */
+        IPCMutex(std::string name);
+        
+        //! Destructor
+        ~IPCMutex();
+        
+        //! Lock the mutex
+        /*!
+            Same basic function as P(): for(;;) { if(S > 0) { S -= 1; break; } }
+        */
+        bool Lock();
+        
+        //! Unlocks the mutex
+        /*!
+            Same basic function as V(): S += 1;
+        */
+        bool Unlock();
+    private:
+        IPCMutex(const IPCMutex&);
+        const IPCMutex& operator=(const IPCMutex&);
+        
+        bool locked_; //!< Whether this mutex is locked or not
+        Implementation *imp_;
+    };
+}
+
+#endif