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J. Duke 2007-12-01 00:00:00 +00:00
parent 686d76f772
commit 8153779ad3
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hotspot/src/share/vm/runtime/vm_version.hpp Normal file
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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; }
};