+/**************************************************************************
+ *
+ * Copyright 2007-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/*
+ * Trace writing functions.
+ */
+
+#ifndef _TRACE_WRITER_LOCAL_HPP_
+#define _TRACE_WRITER_LOCAL_HPP_
+
+
+#include "trace_writer.hpp"
+
+
+namespace trace {
+
+ extern const FunctionSig memcpy_sig;
+ extern const FunctionSig malloc_sig;
+ extern const FunctionSig free_sig;
+ extern const FunctionSig realloc_sig;
+
+ /**
+ * A specialized Writer class, mean to trace the current process.
+ *
+ * In particular:
+ * - it creates a trace file based on the current process name
+ * - uses mutexes to allow tracing from multiple threades
+ * - flushes the output to ensure the last call is traced in event of
+ * abnormal termination
+ */
+ class LocalWriter : public Writer {
+ protected:
+ int acquired;
+
+ public:
+ /**
+ * Should never called directly -- use localWriter singleton below instead.
+ */
+ LocalWriter();
+ ~LocalWriter();
+
+ void open(void);
+
+ unsigned beginEnter(const FunctionSig *sig);
+ void endEnter(void);
+
+ void beginLeave(unsigned call);
+ void endLeave(void);
+
+ void flush(void);
+ };
+
+ /**
+ * Singleton.
+ */
+ extern LocalWriter localWriter;
+
+} /* namespace trace */
+
+#endif /* _TRACE_WRITER_LOCAL_HPP_ */