Mercurial > hg > graal-jvmci-8
annotate src/share/vm/memory/permGen.hpp @ 1953:8d81b4a1d3e1
6998802: ScavengeALot: assert(!gch->incremental_collection_failed()) failed: Twice in a row
Summary: Weaken assert by excluding scavenges resulting from -XX:+ScavengeALot stress-testing option.
Reviewed-by: jmasa, tonyp
author | ysr |
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date | Thu, 11 Nov 2010 10:42:43 -0800 |
parents | e41cd7fd68a6 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // All heaps contains a "permanent generation," containing permanent | |
26 // (reflective) objects. This is like a regular generation in some ways, | |
27 // but unlike one in others, and so is split apart. | |
28 | |
29 class Generation; | |
30 class GenRemSet; | |
31 class CSpaceCounters; | |
32 | |
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33 // PermGen models the part of the heap used to allocate class meta-data. |
0 | 34 |
35 class PermGen : public CHeapObj { | |
36 friend class VMStructs; | |
37 protected: | |
38 size_t _capacity_expansion_limit; // maximum expansion allowed without a | |
605 | 39 // full gc occurring |
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40 void set_capacity_expansion_limit(size_t limit) { |
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41 assert_locked_or_safepoint(Heap_lock); |
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42 _capacity_expansion_limit = limit; |
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43 } |
0 | 44 |
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45 HeapWord* mem_allocate_in_gen(size_t size, Generation* gen); |
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46 // Along with mem_allocate_in_gen() above, implements policy for |
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47 // "scheduling" allocation/expansion/collection of the perm gen. |
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48 // The virtual method request_...() below can be overridden by |
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49 // subtypes that want to implement a different expansion/collection |
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50 // policy from the default provided. |
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51 virtual HeapWord* request_expand_and_allocate(Generation* gen, size_t size, |
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52 GCCause::Cause prev_cause); |
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53 |
0 | 54 public: |
55 enum Name { | |
56 MarkSweepCompact, MarkSweep, ConcurrentMarkSweep | |
57 }; | |
58 | |
59 // Permanent allocation (initialized) | |
60 virtual HeapWord* mem_allocate(size_t size) = 0; | |
61 | |
62 // Mark sweep support | |
63 virtual void compute_new_size() = 0; | |
64 | |
65 // Ideally, we would use MI (IMHO) but we'll do delegation instead. | |
66 virtual Generation* as_gen() const = 0; | |
67 | |
68 virtual void oop_iterate(OopClosure* cl) { | |
69 Generation* g = as_gen(); | |
70 assert(g != NULL, "as_gen() NULL"); | |
71 g->oop_iterate(cl); | |
72 } | |
73 | |
74 virtual void object_iterate(ObjectClosure* cl) { | |
75 Generation* g = as_gen(); | |
76 assert(g != NULL, "as_gen() NULL"); | |
77 g->object_iterate(cl); | |
78 } | |
79 | |
80 // Performance Counter support | |
81 virtual void update_counters() { | |
82 Generation* g = as_gen(); | |
83 assert(g != NULL, "as_gen() NULL"); | |
84 g->update_counters(); | |
85 } | |
86 }; |