author | serb |
Wed, 04 Jun 2014 16:55:06 +0400 | |
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/* |
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* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP |
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#define OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP |
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#include "runtime/atomic.inline.hpp" |
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#include "runtime/orderAccess.inline.hpp" |
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#include "runtime/os.hpp" |
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inline const char* os::file_separator() { return "\\"; } |
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inline const char* os::line_separator() { return "\r\n"; } |
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inline const char* os::path_separator() { return ";"; } |
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inline const char* os::dll_file_extension() { return ".dll"; } |
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inline const int os::default_file_open_flags() { return O_BINARY | O_NOINHERIT;} |
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// File names are case-insensitive on windows only |
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inline int os::file_name_strcmp(const char* s, const char* t) { |
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return _stricmp(s, t); |
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} |
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inline void os::dll_unload(void *lib) { |
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::FreeLibrary((HMODULE)lib); |
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} |
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inline void* os::dll_lookup(void *lib, const char *name) { |
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return (void*)::GetProcAddress((HMODULE)lib, name); |
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} |
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inline bool os::obsolete_option(const JavaVMOption *option) { |
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return false; |
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} |
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inline bool os::uses_stack_guard_pages() { |
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return os::win32::is_nt(); |
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} |
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inline bool os::allocate_stack_guard_pages() { |
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assert(uses_stack_guard_pages(), "sanity check"); |
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return true; |
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} |
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inline int os::readdir_buf_size(const char *path) |
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{ |
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/* As Windows doesn't use the directory entry buffer passed to |
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os::readdir() this can be as short as possible */ |
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return 1; |
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} |
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// Bang the shadow pages if they need to be touched to be mapped. |
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inline void os::bang_stack_shadow_pages() { |
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// Write to each page of our new frame to force OS mapping. |
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// If we decrement stack pointer more than one page |
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// the OS may not map an intervening page into our space |
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// and may fault on a memory access to interior of our frame. |
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address sp = current_stack_pointer(); |
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for (int pages = 1; pages <= StackShadowPages; pages++) { |
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*((int *)(sp - (pages * vm_page_size()))) = 0; |
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} |
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} |
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inline bool os::numa_has_static_binding() { return true; } |
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inline bool os::numa_has_group_homing() { return false; } |
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inline size_t os::read(int fd, void *buf, unsigned int nBytes) { |
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return ::read(fd, buf, nBytes); |
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} |
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inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
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return ::read(fd, buf, nBytes); |
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} |
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inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
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return ::write(fd, buf, nBytes); |
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} |
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inline int os::close(int fd) { |
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return ::close(fd); |
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} |
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inline bool os::supports_monotonic_clock() { |
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return win32::_has_performance_count; |
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} |
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#define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) \ |
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os::win32::call_test_func_with_wrapper(f) |
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#endif // OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP |