Add malloc/new profiling on linux

src/LinuxMallocProfiling.h

+//===--- subzero/src/LinuxMallocProfiling.h - malloc/new tracing  ---------===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief malloc/new/...caller tracing.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_LINUXMALLOCPROFILING_H
+#define SUBZERO_SRC_LINUXMALLOCPROFILING_H
+
+#include "IceDefs.h"
+#include "IceTypes.h"

[Jim Stichnoth, 2016/03/17 20:09:06]

Can this be removed?  I don't see anything in this header file that ought to
depend on IceTypes.h.

[sehr, 2016/03/17 20:58:21]

Done.

+
+namespace Ice {
+
+class LinuxMallocProfiling {
+private:
+  LinuxMallocProfiling(const LinuxMallocProfiling &) = delete;
+  LinuxMallocProfiling &operator=(const LinuxMallocProfiling &) = delete;
+
+#ifdef ALLOW_LINUX_MALLOC_PROFILE
+  Ostream *Ls;
+#endif // ALLOW_LINUX_MALLOC_PROFILE
+
+public:
+  LinuxMallocProfiling(size_t NumThreads, Ostream *Ls);
+  ~LinuxMallocProfiling();
+};
+
+} // end of namespace Ice
+#endif // SUBZERO_SRC_LINUXMALLOCPROFILING_H