diff src/share/vm/runtime/vm_version.hpp @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children 28372612af5e
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/runtime/vm_version.hpp	Sat Dec 01 00:00:00 2007 +0000
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+/*
+ * Copyright 1997-2007 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.
+ *
+ */
+
+// VM_Version provides information about the VM.
+
+class Abstract_VM_Version: AllStatic {
+ protected:
+  friend class VMStructs;
+  static const char*  _s_vm_release;
+  static const char*  _s_internal_vm_info_string;
+  // These are set by machine-dependent initializations
+  static bool         _supports_cx8;
+  static unsigned int _logical_processors_per_package;
+  static int          _vm_major_version;
+  static int          _vm_minor_version;
+  static int          _vm_build_number;
+  static bool         _initialized;
+ public:
+  static void initialize();
+
+  // Name
+  static const char* vm_name();
+  // Vendor
+  static const char* vm_vendor();
+  // VM version information string printed by launcher (java -version)
+  static const char* vm_info_string();
+  static const char* vm_release();
+  static const char* vm_platform_string();
+
+  static int vm_major_version()               { assert(_initialized, "not initialized"); return _vm_major_version; }
+  static int vm_minor_version()               { assert(_initialized, "not initialized"); return _vm_minor_version; }
+  static int vm_build_number()                { assert(_initialized, "not initialized"); return _vm_build_number; }
+
+  // Gets the jvm_version_info.jvm_version defined in jvm.h
+  static unsigned int jvm_version();
+
+  // Internal version providing additional build information
+  static const char* internal_vm_info_string();
+
+  // does HW support an 8-byte compare-exchange operation?
+  static bool supports_cx8()  {return _supports_cx8;}
+  static unsigned int logical_processors_per_package() {
+    return _logical_processors_per_package;
+  }
+
+  // Number of page sizes efficiently supported by the hardware.  Most chips now
+  // support two sizes, thus this default implementation.  Processor-specific
+  // subclasses should define new versions to hide this one as needed.  Note
+  // that the O/S may support more sizes, but at most this many are used.
+  static uint page_size_count() { return 2; }
+};