| /* |
| * Copyright 1997-2003 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. |
| * |
| */ |
| |
| // Events and EventMark provide interfaces to log events taking place in the vm. |
| // This facility is extremly useful for post-mortem debugging. The eventlog |
| // often provides crucial information about events leading up to the crash. |
| // |
| // All arguments past the format string must be passed as an intptr_t. |
| // |
| // To log a single event use: |
| // Events::log("New nmethod has been created " INTPTR_FORMAT, nm); |
| // |
| // To log a block of events use: |
| // EventMark m("GarbageCollecting %d", (intptr_t)gc_number); |
| // |
| // The constructor to eventlog indents the eventlog until the |
| // destructor has been executed. |
| // |
| // IMPLEMENTATION RESTRICTION: |
| // Max 3 arguments are saved for each logged event. |
| // |
| |
| class Events : AllStatic { |
| public: |
| // Logs an event, format as printf |
| static void log(const char* format, ...) PRODUCT_RETURN; |
| |
| // Prints all events in the buffer |
| static void print_all(outputStream* st) PRODUCT_RETURN; |
| |
| // Prints last number events from the event buffer |
| static void print_last(outputStream *st, int number) PRODUCT_RETURN; |
| }; |
| |
| class EventMark : public StackObj { |
| public: |
| // log a begin event, format as printf |
| EventMark(const char* format, ...) PRODUCT_RETURN; |
| // log an end event |
| ~EventMark() PRODUCT_RETURN; |
| }; |
| |
| int print_all_events(outputStream *st); |