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comparison src/share/vm/utilities/debug.cpp @ 4872:aa3d708d67c4

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7141200: log some interesting information in ring buffers for crashes Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa
author never
date Wed, 01 Feb 2012 07:59:01 -0800
parents 436b4a3231bf
children 09d00c18e323
comparison
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4871:f067b4e0e04b 4872:aa3d708d67c4
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
599 Command c("flush"); 599 Command c("flush");
600 tty->flush(); 600 tty->flush();
601 } 601 }
602 602
603 603
604 extern "C" void events() {
605 Command c("events");
606 Events::print_last(tty, 50);
607 }
608
609
610 extern "C" void nevents(int n) {
611 Command c("events");
612 Events::print_last(tty, n);
613 }
614
615
616 // Given a heap address that was valid before the most recent GC, if 604 // Given a heap address that was valid before the most recent GC, if
617 // the oop that used to contain it is still live, prints the new 605 // the oop that used to contain it is still live, prints the new
618 // location of the oop and the address. Useful for tracking down 606 // location of the oop and the address. Useful for tracking down
619 // certain kinds of naked oop and oop map bugs. 607 // certain kinds of naked oop and oop map bugs.
620 extern "C" void pnl(intptr_t old_heap_addr) { 608 extern "C" void pnl(intptr_t old_heap_addr) {