Mercurial > hg > truffle
diff src/os/windows/vm/os_windows.inline.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | fcbfc50865ab |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/os/windows/vm/os_windows.inline.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,71 @@ +/* + * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +inline const char* os::file_separator() { return "\\"; } +inline const char* os::line_separator() { return "\r\n"; } +inline const char* os::path_separator() { return ";"; } + +inline const char* os::jlong_format_specifier() { return "%I64d"; } +inline const char* os::julong_format_specifier() { return "%I64u"; } + +// File names are case-insensitive on windows only +inline int os::file_name_strcmp(const char* s, const char* t) { + return _stricmp(s, t); +} + +// Used to improve time-sharing on some systems +inline void os::loop_breaker(int attempts) {} + +inline bool os::obsolete_option(const JavaVMOption *option) { + return false; +} + +inline bool os::uses_stack_guard_pages() { + return os::win32::is_nt(); +} + +inline bool os::allocate_stack_guard_pages() { + assert(uses_stack_guard_pages(), "sanity check"); + 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::bang_stack_shadow_pages() { + // 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. + address sp = current_stack_pointer(); + for (int pages = 1; pages <= StackShadowPages; pages++) { + *((int *)(sp - (pages * vm_page_size()))) = 0; + } +}