author | tonyp |
Tue, 08 Nov 2011 00:41:28 -0500 | |
changeset 10997 | 0be4b3be7197 |
parent 9997 | b75b7939f448 |
child 11758 | b1a0089f89d2 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
9997
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
2 |
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
1 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5343
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5343
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5343
diff
changeset
|
21 |
* questions. |
1 | 22 |
* |
23 |
*/ |
|
24 |
||
7397 | 25 |
#ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP |
26 |
#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP |
|
27 |
||
28 |
#include "gc_implementation/parallelScavenge/objectStartArray.hpp" |
|
29 |
#include "gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp" |
|
30 |
#include "gc_implementation/parallelScavenge/psOldGen.hpp" |
|
31 |
#include "gc_implementation/parallelScavenge/psPermGen.hpp" |
|
32 |
#include "gc_implementation/parallelScavenge/psYoungGen.hpp" |
|
33 |
#include "gc_implementation/shared/gcPolicyCounters.hpp" |
|
34 |
#include "gc_interface/collectedHeap.inline.hpp" |
|
35 |
#include "utilities/ostream.hpp" |
|
36 |
||
1 | 37 |
class AdjoiningGenerations; |
38 |
class GCTaskManager; |
|
39 |
class PSAdaptiveSizePolicy; |
|
5343
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
40 |
class GenerationSizer; |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
41 |
class CollectorPolicy; |
1 | 42 |
|
43 |
class ParallelScavengeHeap : public CollectedHeap { |
|
44 |
friend class VMStructs; |
|
45 |
private: |
|
46 |
static PSYoungGen* _young_gen; |
|
47 |
static PSOldGen* _old_gen; |
|
48 |
static PSPermGen* _perm_gen; |
|
49 |
||
50 |
// Sizing policy for entire heap |
|
51 |
static PSAdaptiveSizePolicy* _size_policy; |
|
52 |
static PSGCAdaptivePolicyCounters* _gc_policy_counters; |
|
53 |
||
54 |
static ParallelScavengeHeap* _psh; |
|
55 |
||
56 |
size_t _perm_gen_alignment; |
|
57 |
size_t _young_gen_alignment; |
|
58 |
size_t _old_gen_alignment; |
|
59 |
||
5343
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
60 |
GenerationSizer* _collector_policy; |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
61 |
|
1 | 62 |
inline size_t set_alignment(size_t& var, size_t val); |
63 |
||
64 |
// Collection of generations that are adjacent in the |
|
65 |
// space reserved for the heap. |
|
66 |
AdjoiningGenerations* _gens; |
|
67 |
||
68 |
static GCTaskManager* _gc_task_manager; // The task manager. |
|
69 |
||
70 |
protected: |
|
71 |
static inline size_t total_invocations(); |
|
72 |
HeapWord* allocate_new_tlab(size_t size); |
|
73 |
||
74 |
public: |
|
75 |
ParallelScavengeHeap() : CollectedHeap() { |
|
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
76 |
set_alignment(_perm_gen_alignment, intra_heap_alignment()); |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
77 |
set_alignment(_young_gen_alignment, intra_heap_alignment()); |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
78 |
set_alignment(_old_gen_alignment, intra_heap_alignment()); |
1 | 79 |
} |
80 |
||
81 |
// For use by VM operations |
|
82 |
enum CollectionType { |
|
83 |
Scavenge, |
|
84 |
MarkSweep |
|
85 |
}; |
|
86 |
||
87 |
ParallelScavengeHeap::Name kind() const { |
|
88 |
return CollectedHeap::ParallelScavengeHeap; |
|
89 |
} |
|
90 |
||
5343
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
91 |
CollectorPolicy* collector_policy() const { return (CollectorPolicy*) _collector_policy; } |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
92 |
// GenerationSizer* collector_policy() const { return _collector_policy; } |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
4637
diff
changeset
|
93 |
|
1 | 94 |
static PSYoungGen* young_gen() { return _young_gen; } |
95 |
static PSOldGen* old_gen() { return _old_gen; } |
|
96 |
static PSPermGen* perm_gen() { return _perm_gen; } |
|
97 |
||
98 |
virtual PSAdaptiveSizePolicy* size_policy() { return _size_policy; } |
|
99 |
||
100 |
static PSGCAdaptivePolicyCounters* gc_policy_counters() { return _gc_policy_counters; } |
|
101 |
||
102 |
static ParallelScavengeHeap* heap(); |
|
103 |
||
104 |
static GCTaskManager* const gc_task_manager() { return _gc_task_manager; } |
|
105 |
||
106 |
AdjoiningGenerations* gens() { return _gens; } |
|
107 |
||
108 |
// Returns JNI_OK on success |
|
109 |
virtual jint initialize(); |
|
110 |
||
111 |
void post_initialize(); |
|
112 |
void update_counters(); |
|
113 |
// The alignment used for the various generations. |
|
114 |
size_t perm_gen_alignment() const { return _perm_gen_alignment; } |
|
115 |
size_t young_gen_alignment() const { return _young_gen_alignment; } |
|
116 |
size_t old_gen_alignment() const { return _old_gen_alignment; } |
|
117 |
||
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
118 |
// The alignment used for eden and survivors within the young gen |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
119 |
// and for boundary between young gen and old gen. |
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
120 |
size_t intra_heap_alignment() const { return 64 * K; } |
1 | 121 |
|
122 |
size_t capacity() const; |
|
123 |
size_t used() const; |
|
124 |
||
125 |
// Return "true" if all generations (but perm) have reached the |
|
126 |
// maximal committed limit that they can reach, without a garbage |
|
127 |
// collection. |
|
128 |
virtual bool is_maximal_no_gc() const; |
|
129 |
||
9935
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
130 |
// Return true if the reference points to an object that |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
131 |
// can be moved in a partial collection. For currently implemented |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
132 |
// generational collectors that means during a collection of |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
133 |
// the young gen. |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
134 |
virtual bool is_scavengable(const void* addr); |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
135 |
|
1 | 136 |
// Does this heap support heap inspection? (+PrintClassHistogram) |
137 |
bool supports_heap_inspection() const { return true; } |
|
138 |
||
139 |
size_t permanent_capacity() const; |
|
140 |
size_t permanent_used() const; |
|
141 |
||
142 |
size_t max_capacity() const; |
|
143 |
||
144 |
// Whether p is in the allocated part of the heap |
|
145 |
bool is_in(const void* p) const; |
|
146 |
||
147 |
bool is_in_reserved(const void* p) const; |
|
148 |
bool is_in_permanent(const void *p) const { // reserved part |
|
149 |
return perm_gen()->reserved().contains(p); |
|
150 |
} |
|
151 |
||
9935
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
152 |
#ifdef ASSERT |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
153 |
virtual bool is_in_partial_collection(const void *p); |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
154 |
#endif |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
7397
diff
changeset
|
155 |
|
1 | 156 |
bool is_permanent(const void *p) const { // committed part |
157 |
return perm_gen()->is_in(p); |
|
158 |
} |
|
159 |
||
4030
4c471254865e
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
3908
diff
changeset
|
160 |
inline bool is_in_young(oop p); // reserved part |
4c471254865e
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
3908
diff
changeset
|
161 |
inline bool is_in_old_or_perm(oop p); // reserved part |
1 | 162 |
|
163 |
// Memory allocation. "gc_time_limit_was_exceeded" will |
|
164 |
// be set to true if the adaptive size policy determine that |
|
165 |
// an excessive amount of time is being spent doing collections |
|
166 |
// and caused a NULL to be returned. If a NULL is not returned, |
|
167 |
// "gc_time_limit_was_exceeded" has an undefined meaning. |
|
9997
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
168 |
HeapWord* mem_allocate(size_t size, |
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
169 |
bool* gc_overhead_limit_was_exceeded); |
1 | 170 |
|
9997
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
171 |
// Allocation attempt(s) during a safepoint. It should never be called |
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
172 |
// to allocate a new TLAB as this allocation might be satisfied out |
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
173 |
// of the old generation. |
b75b7939f448
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
9995
diff
changeset
|
174 |
HeapWord* failed_mem_allocate(size_t size); |
1 | 175 |
|
176 |
HeapWord* permanent_mem_allocate(size_t size); |
|
177 |
HeapWord* failed_permanent_mem_allocate(size_t size); |
|
178 |
||
179 |
// Support for System.gc() |
|
180 |
void collect(GCCause::Cause cause); |
|
181 |
||
182 |
// This interface assumes that it's being called by the |
|
183 |
// vm thread. It collects the heap assuming that the |
|
184 |
// heap lock is already held and that we are executing in |
|
185 |
// the context of the vm thread. |
|
186 |
void collect_as_vm_thread(GCCause::Cause cause); |
|
187 |
||
188 |
// These also should be called by the vm thread at a safepoint (e.g., from a |
|
189 |
// VM operation). |
|
190 |
// |
|
191 |
// The first collects the young generation only, unless the scavenge fails; it |
|
192 |
// will then attempt a full gc. The second collects the entire heap; if |
|
193 |
// maximum_compaction is true, it will compact everything and clear all soft |
|
194 |
// references. |
|
195 |
inline void invoke_scavenge(); |
|
196 |
inline void invoke_full_gc(bool maximum_compaction); |
|
197 |
||
198 |
bool supports_inline_contig_alloc() const { return !UseNUMA; } |
|
388 | 199 |
|
200 |
HeapWord** top_addr() const { return !UseNUMA ? young_gen()->top_addr() : (HeapWord**)-1; } |
|
201 |
HeapWord** end_addr() const { return !UseNUMA ? young_gen()->end_addr() : (HeapWord**)-1; } |
|
1 | 202 |
|
203 |
void ensure_parsability(bool retire_tlabs); |
|
204 |
void accumulate_statistics_all_tlabs(); |
|
205 |
void resize_all_tlabs(); |
|
206 |
||
207 |
size_t unsafe_max_alloc(); |
|
208 |
||
209 |
bool supports_tlab_allocation() const { return true; } |
|
210 |
||
211 |
size_t tlab_capacity(Thread* thr) const; |
|
212 |
size_t unsafe_max_tlab_alloc(Thread* thr) const; |
|
213 |
||
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
214 |
// Can a compiler initialize a new object without store barriers? |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
215 |
// This permission only extends from the creation of a new object |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
216 |
// via a TLAB up to the first subsequent safepoint. |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
217 |
virtual bool can_elide_tlab_store_barriers() const { |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
218 |
return true; |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
219 |
} |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
220 |
|
4637 | 221 |
virtual bool card_mark_must_follow_store() const { |
222 |
return false; |
|
223 |
} |
|
224 |
||
4030
4c471254865e
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
3908
diff
changeset
|
225 |
// Return true if we don't we need a store barrier for |
4c471254865e
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
3908
diff
changeset
|
226 |
// initializing stores to an object at this address. |
4c471254865e
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
3908
diff
changeset
|
227 |
virtual bool can_elide_initializing_store_barrier(oop new_obj); |
4c471254865e
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
3908
diff
changeset
|
228 |
|
1374
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
229 |
// Can a compiler elide a store barrier when it writes |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
230 |
// a permanent oop into the heap? Applies when the compiler |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
231 |
// is storing x to the heap, where x->is_perm() is true. |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
232 |
virtual bool can_elide_permanent_oop_store_barriers() const { |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
233 |
return true; |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
234 |
} |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
388
diff
changeset
|
235 |
|
1 | 236 |
void oop_iterate(OopClosure* cl); |
237 |
void object_iterate(ObjectClosure* cl); |
|
1893
c82e388e17c5
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
1388
diff
changeset
|
238 |
void safe_object_iterate(ObjectClosure* cl) { object_iterate(cl); } |
1 | 239 |
void permanent_oop_iterate(OopClosure* cl); |
240 |
void permanent_object_iterate(ObjectClosure* cl); |
|
241 |
||
242 |
HeapWord* block_start(const void* addr) const; |
|
243 |
size_t block_size(const HeapWord* addr) const; |
|
244 |
bool block_is_obj(const HeapWord* addr) const; |
|
245 |
||
246 |
jlong millis_since_last_gc(); |
|
247 |
||
248 |
void prepare_for_verify(); |
|
10997
0be4b3be7197
7099849: G1: include heap region information in hs_err files
tonyp
parents:
9997
diff
changeset
|
249 |
virtual void print_on(outputStream* st) const; |
1 | 250 |
virtual void print_gc_threads_on(outputStream* st) const; |
251 |
virtual void gc_threads_do(ThreadClosure* tc) const; |
|
252 |
virtual void print_tracing_info() const; |
|
253 |
||
9995
290620c08233
7004681: G1: Extend marking verification to Full GCs
johnc
parents:
9935
diff
changeset
|
254 |
void verify(bool allow_dirty, bool silent, VerifyOption option /* ignored */); |
1 | 255 |
|
256 |
void print_heap_change(size_t prev_used); |
|
257 |
||
258 |
// Resize the young generation. The reserved space for the |
|
259 |
// generation may be expanded in preparation for the resize. |
|
260 |
void resize_young_gen(size_t eden_size, size_t survivor_size); |
|
261 |
||
262 |
// Resize the old generation. The reserved space for the |
|
263 |
// generation may be expanded in preparation for the resize. |
|
264 |
void resize_old_gen(size_t desired_free_space); |
|
971
f0b20be4165d
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
388
diff
changeset
|
265 |
|
f0b20be4165d
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
388
diff
changeset
|
266 |
// Save the tops of the spaces in all generations |
f0b20be4165d
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
388
diff
changeset
|
267 |
void record_gen_tops_before_GC() PRODUCT_RETURN; |
f0b20be4165d
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
388
diff
changeset
|
268 |
|
f0b20be4165d
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
388
diff
changeset
|
269 |
// Mangle the unused parts of all spaces in the heap |
f0b20be4165d
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
388
diff
changeset
|
270 |
void gen_mangle_unused_area() PRODUCT_RETURN; |
3908
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
271 |
|
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
272 |
// Call these in sequential code around the processing of strong roots. |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
273 |
class ParStrongRootsScope : public MarkingCodeBlobClosure::MarkScope { |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
274 |
public: |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
275 |
ParStrongRootsScope(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
276 |
~ParStrongRootsScope(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
3262
diff
changeset
|
277 |
}; |
1 | 278 |
}; |
279 |
||
280 |
inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val) |
|
281 |
{ |
|
282 |
assert(is_power_of_2((intptr_t)val), "must be a power of 2"); |
|
186
32e6c95f8d9b
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
jmasa
parents:
1
diff
changeset
|
283 |
var = round_to(val, intra_heap_alignment()); |
1 | 284 |
return var; |
285 |
} |
|
7397 | 286 |
|
287 |
#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP |