Fri, 10 Jul 2009 11:10:00 -0700
6857194: Add hotspot perf counters to aid class loading performance measurement
Summary: Add new jvmstat counters to measure detailed class loading time
Reviewed-by: acorn, kamg
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // NativeLookup provides an interface for finding DLL entry points for |
duke@435 | 26 | // Java native functions. |
duke@435 | 27 | |
duke@435 | 28 | class NativeLookup : AllStatic { |
duke@435 | 29 | private: |
duke@435 | 30 | // JNI name computation |
duke@435 | 31 | static char* pure_jni_name(methodHandle method); |
duke@435 | 32 | static char* long_jni_name(methodHandle method); |
duke@435 | 33 | |
duke@435 | 34 | // Style specific lookup |
duke@435 | 35 | static address lookup_style(methodHandle method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS); |
duke@435 | 36 | static address lookup_base (methodHandle method, bool& in_base_library, TRAPS); |
duke@435 | 37 | static address lookup_entry(methodHandle method, bool& in_base_library, TRAPS); |
duke@435 | 38 | static address lookup_entry_prefixed(methodHandle method, bool& in_base_library, TRAPS); |
duke@435 | 39 | public: |
duke@435 | 40 | // Lookup native function. May throw UnsatisfiedLinkError. |
duke@435 | 41 | static address lookup(methodHandle method, bool& in_base_library, TRAPS); |
duke@435 | 42 | |
duke@435 | 43 | // Lookup native functions in base library. |
duke@435 | 44 | static address base_library_lookup(const char* class_name, const char* method_name, const char* signature); |
duke@435 | 45 | }; |