src/os/aix/vm/os_aix.inline.hpp

rev 7960 : 8075506: aix: improve handling of native memory

@@ -1,8 +1,8 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2012, 2013 SAP AG. All rights reserved.
+ * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2015 SAP AG. 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.

@@ -51,22 +51,23 @@
 
 inline bool os::uses_stack_guard_pages() {
   return true;
 }
 
+// Whether or not calling code should/can commit/uncommit stack pages
+// before guarding them. Answer for AIX is definitly no, because we
+// operate on C heap.
 inline bool os::allocate_stack_guard_pages() {
   assert(uses_stack_guard_pages(), "sanity check");
-  return true;
+  return false;
 }
 
-
 // On Aix, reservations are made on a page by page basis, nothing to do.
 inline void os::pd_split_reserved_memory(char *base, size_t size,
                                          size_t split, bool realloc) {
 }
 
-
 // Bang the shadow pages if they need to be touched to be mapped.
 inline void os::bang_stack_shadow_pages() {
 }
 
 inline void os::dll_unload(void *lib) {

@@ -172,15 +173,15 @@
 
 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
   RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
 }
 
-inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
+inline int os::raw_send(int fd, char *buf, size_t nBytes, uint flags) {
   return os::send(fd, buf, nBytes, flags);
 }
 
-inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
+inline int os::connect(int fd, struct sockaddr *him, socklen_t len) {
   RESTARTABLE_RETURN_INT(::connect(fd, him, len));
 }
 
 inline struct hostent* os::get_host_by_name(char* name) {
   return ::gethostbyname(name);