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7141200: log some interesting information in ring buffers for crashes

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Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa
This commit is contained in:
Tom Rodriguez 2012-02-01 07:59:01 -08:00
parent a59952f4c9
commit 5a41427b37
30 changed files with 539 additions and 369 deletions
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49
hotspot/src/share/vm/gc_interface/collectedHeap.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2012, Oracle and/or its affiliates. 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
@ -31,6 +31,7 @@
#include "runtime/handles.hpp"
#include "runtime/perfData.hpp"
#include "runtime/safepoint.hpp"
#include "utilities/events.hpp"
// A "CollectedHeap" is an implementation of a java heap for HotSpot. This
// is an abstract class: there may be many different kinds of heaps. This
@ -43,6 +44,29 @@ class AdaptiveSizePolicy;
class Thread;
class CollectorPolicy;
class GCMessage : public FormatBuffer<1024> {
public:
bool is_before;
public:
GCMessage() {}
};
class GCHeapLog : public EventLogBase<GCMessage> {
private:
void log_heap(bool before);
public:
GCHeapLog() : EventLogBase<GCMessage>("GC Heap History") {}
void log_heap_before() {
log_heap(true);
}
void log_heap_after() {
log_heap(false);
}
};
//
// CollectedHeap
// SharedHeap
@ -62,6 +86,8 @@ class CollectedHeap : public CHeapObj {
// Used for filler objects (static, but initialized in ctor).
static size_t _filler_array_max_size;
GCHeapLog* _gc_heap_log;
// Used in support of ReduceInitialCardMarks; only consulted if COMPILER2 is being used
bool _defer_initial_card_mark;
@ -618,6 +644,27 @@ class CollectedHeap : public CHeapObj {
// Default implementation does nothing.
virtual void print_tracing_info() const = 0;
// If PrintHeapAtGC is set call the appropriate routi
void print_heap_before_gc() {
if (PrintHeapAtGC) {
Universe::print_heap_before_gc();
}
if (_gc_heap_log != NULL) {
_gc_heap_log->log_heap_before();
}
}
void print_heap_after_gc() {
if (PrintHeapAtGC) {
Universe::print_heap_after_gc();
}
if (_gc_heap_log != NULL) {
_gc_heap_log->log_heap_after();
}
}
// Allocate GCHeapLog during VM startup
static void initialize_heap_log();
// Heap verification
virtual void verify(bool allow_dirty, bool silent, VerifyOption option) = 0;