Initial commit of Command & Conquer Renegade source code.

Code/Tools/wlib/critsec.h

@@ -0,0 +1,62 @@
+/*
+**	Command & Conquer Renegade(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program is free software: you can redistribute it and/or modify
+**	it under the terms of the GNU General Public License as published by
+**	the Free Software Foundation, either version 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**	GNU General Public License for more details.
+**
+**	You should have received a copy of the GNU General Public License
+**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CRITSEC_HEADER
+#define CRITSEC_HEADER
+
+#include "wstypes.h"
+#ifdef _WIN32
+ #include <windows.h>
+ #include <winbase.h>
+#elif defined(_UNIX)
+  #include <pthread.h>
+  #include <errno.h>
+#endif
+
+// Windows headers have a tendency to redefine IN
+#ifdef IN
+#undef IN
+#endif
+#define IN const
+
+//
+// Critical Section built either on a POSIX Mutex, or a Win32 Critical Section
+//
+// POSIX version is done by keeping a thread_id and a reference count.  Win32 version
+//  just calls the built in functions.
+//
+class CritSec
+{
+ public:
+                CritSec();
+               ~CritSec();
+    
+  sint32		lock(int *refcount=NULL) RO;
+  sint32		unlock(void) RO;
+
+ protected:
+  #ifdef _WIN32
+    mutable CRITICAL_SECTION    CritSec_;
+  #else
+    mutable pthread_mutex_t	Mutex_;         // Mutex lock
+    mutable pthread_t		ThreadId_;	// Owner of mutex
+    mutable int                 RefCount_;      // Reference count
+  #endif
+};
+
+#endif