| /* |
| * Copyright (c) 1999, 2022, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2012, 2018 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. |
| * |
| */ |
| |
| #ifndef OS_AIX_OS_AIX_INLINE_HPP |
| #define OS_AIX_OS_AIX_INLINE_HPP |
| |
| #include "os_aix.hpp" |
| |
| #include "runtime/os.hpp" |
| #include "os_posix.inline.hpp" |
| |
| // Information about the protection of the page at address '0' on this os. |
| inline bool os::zero_page_read_protected() { |
| return false; |
| } |
| |
| 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 definitely no, because memory |
| // is automatically committed on touch. |
| inline bool os::must_commit_stack_guard_pages() { |
| assert(uses_stack_guard_pages(), "sanity check"); |
| return false; |
| } |
| |
| // Bang the shadow pages if they need to be touched to be mapped. |
| inline void os::map_stack_shadow_pages(address sp) { |
| } |
| |
| // Trim-native support, stubbed out for now, may be enabled later |
| inline bool os::can_trim_native_heap() { return false; } |
| inline bool os::trim_native_heap(os::size_change_t* rss_change) { return false; } |
| |
| #endif // OS_AIX_OS_AIX_INLINE_HPP |