Mercurial > hg > graal-compiler

annotate src/share/vm/memory/permGen.hpp @ 1972:f95d63e2154a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6989984: Use standard include model for Hospot Summary: Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
author stefank
date Tue, 23 Nov 2010 13:22:55 -0800
parents e41cd7fd68a6
children d2a62e0f25eb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1 /*
1839
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load
duke
parents:
diff changeset
4 *
a61af66fc99e Initial load
duke
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load
duke
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load
duke
parents:
diff changeset
7 * published by the Free Software Foundation.
a61af66fc99e Initial load
duke
parents:
diff changeset
8 *
a61af66fc99e Initial load
duke
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load
duke
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load
duke
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load
duke
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load
duke
parents:
diff changeset
13 * accompanied this code).
a61af66fc99e Initial load
duke
parents:
diff changeset
14 *
a61af66fc99e Initial load
duke
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load
duke
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load
duke
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load
duke
parents:
diff changeset
18 *
1552
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 605
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 605
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 605
diff changeset
21 * questions.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
22 *
a61af66fc99e Initial load
duke
parents:
diff changeset
23 */
a61af66fc99e Initial load
duke
parents:
diff changeset
24
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
25 #ifndef SHARE_VM_MEMORY_PERMGEN_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
26 #define SHARE_VM_MEMORY_PERMGEN_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
27
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
28 #include "gc_interface/gcCause.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
29 #include "memory/generation.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
30 #include "memory/iterator.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
31 #include "runtime/handles.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
32 #include "runtime/mutexLocker.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
33 #include "runtime/virtualspace.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
34
0
a61af66fc99e Initial load
duke
parents:
diff changeset
35 // All heaps contains a "permanent generation," containing permanent
a61af66fc99e Initial load
duke
parents:
diff changeset
36 // (reflective) objects. This is like a regular generation in some ways,
a61af66fc99e Initial load
duke
parents:
diff changeset
37 // but unlike one in others, and so is split apart.
a61af66fc99e Initial load
duke
parents:
diff changeset
38
a61af66fc99e Initial load
duke
parents:
diff changeset
39 class Generation;
a61af66fc99e Initial load
duke
parents:
diff changeset
40 class GenRemSet;
a61af66fc99e Initial load
duke
parents:
diff changeset
41 class CSpaceCounters;
a61af66fc99e Initial load
duke
parents:
diff changeset
42
1839
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
43 // PermGen models the part of the heap used to allocate class meta-data.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
44
a61af66fc99e Initial load
duke
parents:
diff changeset
45 class PermGen : public CHeapObj {
a61af66fc99e Initial load
duke
parents:
diff changeset
46 friend class VMStructs;
a61af66fc99e Initial load
duke
parents:
diff changeset
47 protected:
a61af66fc99e Initial load
duke
parents:
diff changeset
48 size_t _capacity_expansion_limit; // maximum expansion allowed without a
605
98cb887364d3 6810672: Comment typos
twisti
parents: 196
diff changeset
49 // full gc occurring
1839
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
50 void set_capacity_expansion_limit(size_t limit) {
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
51 assert_locked_or_safepoint(Heap_lock);
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
52 _capacity_expansion_limit = limit;
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
53 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
54
139
c0492d52d55b 6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents: 0
diff changeset
55 HeapWord* mem_allocate_in_gen(size_t size, Generation* gen);
1839
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
56 // Along with mem_allocate_in_gen() above, implements policy for
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
57 // "scheduling" allocation/expansion/collection of the perm gen.
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
58 // The virtual method request_...() below can be overridden by
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
59 // subtypes that want to implement a different expansion/collection
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
60 // policy from the default provided.
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
61 virtual HeapWord* request_expand_and_allocate(Generation* gen, size_t size,
e41cd7fd68a6 6794422: Perm gen expansion policy for concurrent collectors
ysr
parents: 1552
diff changeset
62 GCCause::Cause prev_cause);
139
c0492d52d55b 6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents: 0
diff changeset
63
0
a61af66fc99e Initial load
duke
parents:
diff changeset
64 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
65 enum Name {
a61af66fc99e Initial load
duke
parents:
diff changeset
66 MarkSweepCompact, MarkSweep, ConcurrentMarkSweep
a61af66fc99e Initial load
duke
parents:
diff changeset
67 };
a61af66fc99e Initial load
duke
parents:
diff changeset
68
a61af66fc99e Initial load
duke
parents:
diff changeset
69 // Permanent allocation (initialized)
a61af66fc99e Initial load
duke
parents:
diff changeset
70 virtual HeapWord* mem_allocate(size_t size) = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
71
a61af66fc99e Initial load
duke
parents:
diff changeset
72 // Mark sweep support
a61af66fc99e Initial load
duke
parents:
diff changeset
73 virtual void compute_new_size() = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
74
a61af66fc99e Initial load
duke
parents:
diff changeset
75 // Ideally, we would use MI (IMHO) but we'll do delegation instead.
a61af66fc99e Initial load
duke
parents:
diff changeset
76 virtual Generation* as_gen() const = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
77
a61af66fc99e Initial load
duke
parents:
diff changeset
78 virtual void oop_iterate(OopClosure* cl) {
a61af66fc99e Initial load
duke
parents:
diff changeset
79 Generation* g = as_gen();
a61af66fc99e Initial load
duke
parents:
diff changeset
80 assert(g != NULL, "as_gen() NULL");
a61af66fc99e Initial load
duke
parents:
diff changeset
81 g->oop_iterate(cl);
a61af66fc99e Initial load
duke
parents:
diff changeset
82 }
a61af66fc99e Initial load
duke
parents:
diff changeset
83
a61af66fc99e Initial load
duke
parents:
diff changeset
84 virtual void object_iterate(ObjectClosure* cl) {
a61af66fc99e Initial load
duke
parents:
diff changeset
85 Generation* g = as_gen();
a61af66fc99e Initial load
duke
parents:
diff changeset
86 assert(g != NULL, "as_gen() NULL");
a61af66fc99e Initial load
duke
parents:
diff changeset
87 g->object_iterate(cl);
a61af66fc99e Initial load
duke
parents:
diff changeset
88 }
a61af66fc99e Initial load
duke
parents:
diff changeset
89
a61af66fc99e Initial load
duke
parents:
diff changeset
90 // Performance Counter support
a61af66fc99e Initial load
duke
parents:
diff changeset
91 virtual void update_counters() {
a61af66fc99e Initial load
duke
parents:
diff changeset
92 Generation* g = as_gen();
a61af66fc99e Initial load
duke
parents:
diff changeset
93 assert(g != NULL, "as_gen() NULL");
a61af66fc99e Initial load
duke
parents:
diff changeset
94 g->update_counters();
a61af66fc99e Initial load
duke
parents:
diff changeset
95 }
a61af66fc99e Initial load
duke
parents:
diff changeset
96 };
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
97
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1839
diff changeset
98 #endif // SHARE_VM_MEMORY_PERMGEN_HPP