--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os/aix/libo4.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2012, 2016 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+// Class libo4 is a C++ wrapper around the libo4 porting library. It handles
+// basic stuff like dynamic loading, library initialization etc.
+// The libo4 porting library is a set of functions that bridge from the AIX
+// runtime environment on OS/400 (aka PASE layer) into native OS/400
+// functionality (aka ILE layer) to close some functional gaps that exist in
+// the PASE layer.
+
+#ifndef OS_AIX_VM_LIBO4_HPP
+#define OS_AIX_VM_LIBO4_HPP
+
+class libo4 {
+public:
+  // Initialize the libo4 porting library.
+  // Returns true if succeeded, false if error.
+  static bool init();
+
+  // Triggers cleanup of the libo4 porting library.
+  static void cleanup();
+
+  // Returns a number of memory statistics from OS/400.
+  //
+  // See libo4.h for details on this API.
+  //
+  // Specify NULL for numbers you are not interested in.
+  //
+  // Returns false if an error happened. Activate OsMisc trace for
+  // trace output.
+  //
+  static bool get_memory_info(unsigned long long* p_virt_total,
+                              unsigned long long* p_real_total,
+                              unsigned long long* p_real_free,
+                              unsigned long long* p_pgsp_total,
+                              unsigned long long* p_pgsp_free);
+
+  // Returns information about system load
+  // (similar to "loadavg()" under other Unices)
+  //
+  // See libo4.h for details on this API.
+  //
+  // Specify NULL for numbers you are not interested in.
+  //
+  // Returns false if an error happened. Activate OsMisc trace for
+  // trace output.
+  //
+  static bool get_load_avg(double* p_avg1, double* p_avg5, double* p_avg15);
+
+  // This is a replacement for the "realpath()" API which does not really work
+  // in PASE together with the (case insensitive but case preserving)
+  // filesystem on OS/400.
+  //
+  // See libo4.h for details on this API.
+  //
+  // Returns false if an error happened. Activate OsMisc trace for
+  // trace output.
+  //
+  static bool realpath(const char* file_name, char* resolved_name,
+                       int resolved_name_len);
+
+  // Call libo4_RemoveEscapeMessageFromJoblogByContext API to remove messages
+  // from the OS/400 job log.
+  //
+  // See libo4.h for details on this API.
+  static bool removeEscapeMessageFromJoblogByContext(const void* context);
+};
+
+#endif // OS_AIX_VM_LIBO4_HPP