Mercurial > hg > truffle
annotate src/share/vm/oops/constantPoolKlass.hpp @ 5274:e72dd6533eb9
documented importance of nmethod::_graal_compiled_method wrt code unloading and GC
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 23 Apr 2012 15:42:30 +0200 |
parents | f95d63e2154a |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 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). | |
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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 | |
1972 | 25 #ifndef SHARE_VM_OOPS_CONSTANTPOOLKLASS_HPP |
26 #define SHARE_VM_OOPS_CONSTANTPOOLKLASS_HPP | |
27 | |
28 #include "oops/arrayKlass.hpp" | |
29 #include "oops/instanceKlass.hpp" | |
30 | |
0 | 31 // A constantPoolKlass is the klass of a constantPoolOop |
32 | |
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33 class constantPoolKlass : public Klass { |
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34 juint _alloc_size; // allocation profiling support |
0 | 35 public: |
36 // Dispatched klass operations | |
37 bool oop_is_constantPool() const { return true; } | |
38 int oop_size(oop obj) const; | |
39 int klass_oop_size() const { return object_size(); } | |
40 | |
41 // Allocation | |
42 DEFINE_ALLOCATE_PERMANENT(constantPoolKlass); | |
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43 constantPoolOop allocate(int length, bool is_conc_safe, TRAPS); |
0 | 44 static klassOop create_klass(TRAPS); |
45 | |
46 // Casting from klassOop | |
47 static constantPoolKlass* cast(klassOop k) { | |
48 assert(k->klass_part()->oop_is_constantPool(), "cast to constantPoolKlass"); | |
49 return (constantPoolKlass*) k->klass_part(); | |
50 } | |
51 | |
52 // Sizing | |
53 static int header_size() { return oopDesc::header_size() + sizeof(constantPoolKlass)/HeapWordSize; } | |
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54 int object_size() const { return align_object_size(header_size()); } |
0 | 55 |
56 // Garbage collection | |
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57 // Returns true is the object is safe for GC concurrent processing. |
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58 virtual bool oop_is_conc_safe(oop obj) const; |
0 | 59 void oop_follow_contents(oop obj); |
60 int oop_adjust_pointers(oop obj); | |
61 | |
62 // Parallel Scavenge and Parallel Old | |
63 PARALLEL_GC_DECLS | |
64 | |
65 // Iterators | |
66 int oop_oop_iterate(oop obj, OopClosure* blk); | |
67 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
68 | |
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69 // Allocation profiling support |
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70 juint alloc_size() const { return _alloc_size; } |
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71 void set_alloc_size(juint n) { _alloc_size = n; } |
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72 |
0 | 73 // Printing |
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74 void oop_print_value_on(oop obj, outputStream* st); |
0 | 75 void oop_print_on(oop obj, outputStream* st); |
76 | |
77 // Verification | |
78 const char* internal_name() const; | |
79 void oop_verify_on(oop obj, outputStream* st); | |
80 // tells whether obj is partially constructed (gc during class loading) | |
81 bool oop_partially_loaded(oop obj) const; | |
82 void oop_set_partially_loaded(oop obj); | |
83 #ifndef PRODUCT | |
84 // Compile the world support | |
85 static void preload_and_initialize_all_classes(oop constant_pool, TRAPS); | |
86 #endif | |
87 }; | |
1972 | 88 |
89 #endif // SHARE_VM_OOPS_CONSTANTPOOLKLASS_HPP |