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annotate src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp @ 1972:f95d63e2154a
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 | c18cbe5936b8 |
| children | 2aa9ddbb9e60 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 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 | |
| 1972 | 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 | |
| 0 | 37 class AdjoiningGenerations; |
| 38 class GCTaskManager; | |
| 39 class PSAdaptiveSizePolicy; | |
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40 class GenerationSizer; |
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41 class CollectorPolicy; |
| 0 | 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 | |
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60 GenerationSizer* _collector_policy; |
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61 |
| 0 | 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() { | |
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76 set_alignment(_perm_gen_alignment, intra_heap_alignment()); |
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77 set_alignment(_young_gen_alignment, intra_heap_alignment()); |
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78 set_alignment(_old_gen_alignment, intra_heap_alignment()); |
| 0 | 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 | |
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91 CollectorPolicy* collector_policy() const { return (CollectorPolicy*) _collector_policy; } |
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92 // GenerationSizer* collector_policy() const { return _collector_policy; } |
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93 |
| 0 | 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 | |
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118 // The alignment used for eden and survivors within the young gen |
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119 // and for boundary between young gen and old gen. |
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120 size_t intra_heap_alignment() const { return 64 * K; } |
| 0 | 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 | |
| 130 // Does this heap support heap inspection? (+PrintClassHistogram) | |
| 131 bool supports_heap_inspection() const { return true; } | |
| 132 | |
| 133 size_t permanent_capacity() const; | |
| 134 size_t permanent_used() const; | |
| 135 | |
| 136 size_t max_capacity() const; | |
| 137 | |
| 138 // Whether p is in the allocated part of the heap | |
| 139 bool is_in(const void* p) const; | |
| 140 | |
| 141 bool is_in_reserved(const void* p) const; | |
| 142 bool is_in_permanent(const void *p) const { // reserved part | |
| 143 return perm_gen()->reserved().contains(p); | |
| 144 } | |
| 145 | |
| 146 bool is_permanent(const void *p) const { // committed part | |
| 147 return perm_gen()->is_in(p); | |
| 148 } | |
| 149 | |
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150 inline bool is_in_young(oop p); // reserved part |
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151 inline bool is_in_old_or_perm(oop p); // reserved part |
| 0 | 152 |
| 153 // Memory allocation. "gc_time_limit_was_exceeded" will | |
| 154 // be set to true if the adaptive size policy determine that | |
| 155 // an excessive amount of time is being spent doing collections | |
| 156 // and caused a NULL to be returned. If a NULL is not returned, | |
| 157 // "gc_time_limit_was_exceeded" has an undefined meaning. | |
| 158 | |
| 159 HeapWord* mem_allocate(size_t size, | |
| 160 bool is_noref, | |
| 161 bool is_tlab, | |
| 162 bool* gc_overhead_limit_was_exceeded); | |
| 163 HeapWord* failed_mem_allocate(size_t size, bool is_tlab); | |
| 164 | |
| 165 HeapWord* permanent_mem_allocate(size_t size); | |
| 166 HeapWord* failed_permanent_mem_allocate(size_t size); | |
| 167 | |
| 168 // Support for System.gc() | |
| 169 void collect(GCCause::Cause cause); | |
| 170 | |
| 171 // This interface assumes that it's being called by the | |
| 172 // vm thread. It collects the heap assuming that the | |
| 173 // heap lock is already held and that we are executing in | |
| 174 // the context of the vm thread. | |
| 175 void collect_as_vm_thread(GCCause::Cause cause); | |
| 176 | |
| 177 // These also should be called by the vm thread at a safepoint (e.g., from a | |
| 178 // VM operation). | |
| 179 // | |
| 180 // The first collects the young generation only, unless the scavenge fails; it | |
| 181 // will then attempt a full gc. The second collects the entire heap; if | |
| 182 // maximum_compaction is true, it will compact everything and clear all soft | |
| 183 // references. | |
| 184 inline void invoke_scavenge(); | |
| 185 inline void invoke_full_gc(bool maximum_compaction); | |
| 186 | |
| 187 size_t large_typearray_limit() { return FastAllocateSizeLimit; } | |
| 188 | |
| 189 bool supports_inline_contig_alloc() const { return !UseNUMA; } | |
| 141 | 190 |
| 191 HeapWord** top_addr() const { return !UseNUMA ? young_gen()->top_addr() : (HeapWord**)-1; } | |
| 192 HeapWord** end_addr() const { return !UseNUMA ? young_gen()->end_addr() : (HeapWord**)-1; } | |
| 0 | 193 |
| 194 void ensure_parsability(bool retire_tlabs); | |
| 195 void accumulate_statistics_all_tlabs(); | |
| 196 void resize_all_tlabs(); | |
| 197 | |
| 198 size_t unsafe_max_alloc(); | |
| 199 | |
| 200 bool supports_tlab_allocation() const { return true; } | |
| 201 | |
| 202 size_t tlab_capacity(Thread* thr) const; | |
| 203 size_t unsafe_max_tlab_alloc(Thread* thr) const; | |
| 204 | |
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205 // Can a compiler initialize a new object without store barriers? |
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206 // This permission only extends from the creation of a new object |
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207 // via a TLAB up to the first subsequent safepoint. |
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208 virtual bool can_elide_tlab_store_barriers() const { |
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209 return true; |
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210 } |
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211 |
| 1166 | 212 virtual bool card_mark_must_follow_store() const { |
| 213 return false; | |
| 214 } | |
| 215 | |
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216 // Return true if we don't we need a store barrier for |
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217 // initializing stores to an object at this address. |
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218 virtual bool can_elide_initializing_store_barrier(oop new_obj); |
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219 |
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220 // Can a compiler elide a store barrier when it writes |
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221 // a permanent oop into the heap? Applies when the compiler |
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222 // is storing x to the heap, where x->is_perm() is true. |
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223 virtual bool can_elide_permanent_oop_store_barriers() const { |
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224 return true; |
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225 } |
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226 |
| 0 | 227 void oop_iterate(OopClosure* cl); |
| 228 void object_iterate(ObjectClosure* cl); | |
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229 void safe_object_iterate(ObjectClosure* cl) { object_iterate(cl); } |
| 0 | 230 void permanent_oop_iterate(OopClosure* cl); |
| 231 void permanent_object_iterate(ObjectClosure* cl); | |
| 232 | |
| 233 HeapWord* block_start(const void* addr) const; | |
| 234 size_t block_size(const HeapWord* addr) const; | |
| 235 bool block_is_obj(const HeapWord* addr) const; | |
| 236 | |
| 237 jlong millis_since_last_gc(); | |
| 238 | |
| 239 void prepare_for_verify(); | |
| 240 void print() const; | |
| 241 void print_on(outputStream* st) const; | |
| 242 virtual void print_gc_threads_on(outputStream* st) const; | |
| 243 virtual void gc_threads_do(ThreadClosure* tc) const; | |
| 244 virtual void print_tracing_info() const; | |
| 245 | |
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246 void verify(bool allow_dirty, bool silent, bool /* option */); |
| 0 | 247 |
| 248 void print_heap_change(size_t prev_used); | |
| 249 | |
| 250 // Resize the young generation. The reserved space for the | |
| 251 // generation may be expanded in preparation for the resize. | |
| 252 void resize_young_gen(size_t eden_size, size_t survivor_size); | |
| 253 | |
| 254 // Resize the old generation. The reserved space for the | |
| 255 // generation may be expanded in preparation for the resize. | |
| 256 void resize_old_gen(size_t desired_free_space); | |
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257 |
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258 // Save the tops of the spaces in all generations |
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259 void record_gen_tops_before_GC() PRODUCT_RETURN; |
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260 |
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261 // Mangle the unused parts of all spaces in the heap |
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262 void gen_mangle_unused_area() PRODUCT_RETURN; |
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263 |
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264 // Call these in sequential code around the processing of strong roots. |
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265 class ParStrongRootsScope : public MarkingCodeBlobClosure::MarkScope { |
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266 public: |
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267 ParStrongRootsScope(); |
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268 ~ParStrongRootsScope(); |
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269 }; |
| 0 | 270 }; |
| 271 | |
| 272 inline size_t ParallelScavengeHeap::set_alignment(size_t& var, size_t val) | |
| 273 { | |
| 274 assert(is_power_of_2((intptr_t)val), "must be a power of 2"); | |
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275 var = round_to(val, intra_heap_alignment()); |
| 0 | 276 return var; |
| 277 } | |
| 1972 | 278 |
| 279 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARALLELSCAVENGEHEAP_HPP |