1 files changed, 38 insertions, 0 deletions
diff --git a/src/inc/circularlog.h b/src/inc/circularlog.h
new file mode 100644
index 0000000000..4ee8d2fa99
--- /dev/null
+++ b/src/inc/circularlog.h
@@ -0,0 +1,38 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+
+#ifndef _CIRCULARLOG_H__
+
+#define _CIRCULARLOG_H__
+
+#include "sstring.h"
+
+class CircularLog
+{
+public:
+    CircularLog();
+    ~CircularLog();
+    
+    bool Init(const WCHAR* logname, const WCHAR* logHeader, DWORD maxSize = 1024*1024);
+    void Shutdown();
+    void Log(const WCHAR* string);
+  
+protected:
+
+    void   CheckForLogReset(BOOL fOverflow);
+    BOOL   CheckLogHeader();
+    HANDLE OpenFile();    
+    void   CloseFile();
+
+    bool            m_bInit;
+    SString         m_LogFilename;
+    SString         m_LogHeader;
+    SString         m_OldLogFilename;
+    SString         m_LockFilename;
+    DWORD           m_MaxSize;
+    unsigned        m_uLogCount;
+};
+
+#endif