Mercurial > hg > graal-compiler
diff src/share/vm/runtime/vm_version.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 | 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 @@ -0,0 +1,72 @@ +/* + * 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; } +};