hotspot/src/os/windows/vm/os_windows.inline.hpp
author iveresov
Tue, 29 Apr 2008 13:51:26 +0400
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child 670 ddf3e9583f2f
permissions -rw-r--r--
6684395: Port NUMA-aware allocator to linux Summary: NUMA-aware allocator port to Linux Reviewed-by: jmasa, apetrusenko
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/*
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 * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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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::jlong_format_specifier()        { return "%I64d"; }
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inline const char* os::julong_format_specifier()       { return "%I64u"; }
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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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// Used to improve time-sharing on some systems
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inline void os::loop_breaker(int attempts) {}
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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;  }