| /* |
| * Copyright (c) 1997, 2016, Oracle and/or its affiliates. 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_WINDOWS_VM_OS_WINDOWS_INLINE_HPP |
| #define OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP |
| |
| #include "runtime/os.hpp" |
| #include "runtime/thread.hpp" |
| |
| inline const char* os::dll_file_extension() { return ".dll"; } |
| |
| inline const int os::default_file_open_flags() { return O_BINARY | O_NOINHERIT;} |
| |
| // File names are case-insensitive on windows only |
| inline int os::file_name_strcmp(const char* s, const char* t) { |
| return _stricmp(s, t); |
| } |
| |
| inline void os::dll_unload(void *lib) { |
| ::FreeLibrary((HMODULE)lib); |
| } |
| |
| inline void* os::dll_lookup(void *lib, const char *name) { |
| return (void*)::GetProcAddress((HMODULE)lib, name); |
| } |
| |
| inline bool os::obsolete_option(const JavaVMOption *option) { |
| return false; |
| } |
| |
| inline bool os::uses_stack_guard_pages() { |
| return true; |
| } |
| |
| inline bool os::must_commit_stack_guard_pages() { |
| return true; |
| } |
| |
| inline int os::readdir_buf_size(const char *path) |
| { |
| /* As Windows doesn't use the directory entry buffer passed to |
| os::readdir() this can be as short as possible */ |
| |
| return 1; |
| } |
| |
| // Bang the shadow pages if they need to be touched to be mapped. |
| inline void os::map_stack_shadow_pages(address sp) { |
| // Write to each page of our new frame to force OS mapping. |
| // If we decrement stack pointer more than one page |
| // the OS may not map an intervening page into our space |
| // and may fault on a memory access to interior of our frame. |
| const int page_size = os::win32::vm_page_size(); |
| const size_t n_pages = JavaThread::stack_shadow_zone_size() / page_size; |
| for (size_t pages = 1; pages <= n_pages; pages++) { |
| sp -= page_size; |
| *sp = 0; |
| } |
| } |
| |
| inline bool os::numa_has_static_binding() { return true; } |
| inline bool os::numa_has_group_homing() { return false; } |
| |
| inline size_t os::read(int fd, void *buf, unsigned int nBytes) { |
| return ::read(fd, buf, nBytes); |
| } |
| |
| inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
| return ::read(fd, buf, nBytes); |
| } |
| |
| inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
| return ::write(fd, buf, nBytes); |
| } |
| |
| inline int os::close(int fd) { |
| return ::close(fd); |
| } |
| |
| inline bool os::supports_monotonic_clock() { |
| return true; |
| } |
| |
| inline void os::exit(int num) { |
| win32::exit_process_or_thread(win32::EPT_PROCESS, num); |
| } |
| |
| #endif // OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP |