hotspot/src/os/windows/vm/os_windows.inline.hpp
changeset 1 489c9b5090e2
child 388 bcc631c5bbec
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/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;
+  }
+}