Initial commit of a file to declare the interface for platform independent

support for various memory allocation operations.

llvm-svn: 16279

include/llvm/System/Memory.h

@@ -0,0 +1,53 @@
+//===- llvm/System/Memory.h - Memory Support --------------------*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Reid Spencer and is distributed under the 
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This file declares the llvm::sys::Memory class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SYSTEM_PATH_H
+#define LLVM_SYSTEM_PATH_H
+
+#include <string>
+
+namespace llvm {
+namespace sys {
+
+  /// This class provides an abstraction for various memory handling functions
+  /// @since 1.4
+  /// @brief An abstraction for operating system paths.
+  class Memory {
+    /// @name Functions
+    /// @{
+    public:
+      Memory() { Address = 0; AllocSize = 0; }
+      ~Memory() { ReleaseRWX(*this); }
+
+      /// @throws std::string if an error occurred
+      static void* AllocateRWX(Memory& block, unsigned NumBytes);
+
+      /// @throws std::string if an error occurred
+      static void ReleaseRWX(Memory& block);
+
+      char* base() const { return reinterpret_cast<char*>(Address); }
+      unsigned size() const { return AllocSize; }
+    /// @}
+    /// @name Data
+    /// @{
+    private:
+      void * Address;        // Address of first byte of memory area
+      unsigned AllocSize;    // Size, in bytes of the memory area
+    /// @}
+  };
+}
+}
+
+// vim: sw=2
+
+#endif