jdk8-mips64-public/hotspot: src/share/vm/utilities/events.hpp@0414c1049f15

6923991: G1: improve scalability of RSet scanning
Summary: Implemented block-based work stealing. Moved copying during the rset scanning phase to the main copying phase. Made the size of rset table depend on the region size.
Reviewed-by: apetrusenko, tonyp

     1 /*

     2  * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 // Events and EventMark provide interfaces to log events taking place in the vm.

    26 // This facility is extremly useful for post-mortem debugging. The eventlog

    27 // often provides crucial information about events leading up to the crash.

    28 //

    29 // All arguments past the format string must be passed as an intptr_t.

    30 //

    31 // To log a single event use:

    32 //    Events::log("New nmethod has been created " INTPTR_FORMAT, nm);

    33 //

    34 // To log a block of events use:

    35 //    EventMark m("GarbageCollecting %d", (intptr_t)gc_number);

    36 //

    37 // The constructor to eventlog indents the eventlog until the

    38 // destructor has been executed.

    39 //

    40 // IMPLEMENTATION RESTRICTION:

    41 //   Max 3 arguments are saved for each logged event.

    42 //

    44 class Events : AllStatic {

    45  public:

    46   // Logs an event, format as printf

    47   static void log(const char* format, ...) PRODUCT_RETURN;

    49   // Prints all events in the buffer

    50   static void print_all(outputStream* st) PRODUCT_RETURN;

    52   // Prints last number events from the event buffer

    53   static void print_last(outputStream *st, int number) PRODUCT_RETURN;

    54 };

    56 class EventMark : public StackObj {

    57  public:

    58   // log a begin event, format as printf

    59   EventMark(const char* format, ...) PRODUCT_RETURN;

    60   // log an end event

    61   ~EventMark() PRODUCT_RETURN;

    62 };

    64 int print_all_events(outputStream *st);

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/utilities/events.hpp@0414c1049f15

src/share/vm/utilities/events.hpp