Mercurial > hg > graal-compiler
annotate src/share/vm/gc_interface/collectedHeap.inline.hpp @ 7183:b2dbd323c668
8003848: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
Summary: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
Reviewed-by: bdelsart, sspitsyn, coleenp
author | jiangli |
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date | Tue, 27 Nov 2012 17:03:56 -0500 |
parents | da91efe96a93 |
children | 59c790074993 f34d701e952e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2012, 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_INTERFACE_COLLECTEDHEAP_INLINE_HPP |
26 #define SHARE_VM_GC_INTERFACE_COLLECTEDHEAP_INLINE_HPP | |
27 | |
28 #include "gc_interface/collectedHeap.hpp" | |
29 #include "memory/threadLocalAllocBuffer.inline.hpp" | |
30 #include "memory/universe.hpp" | |
31 #include "oops/arrayOop.hpp" | |
32 #include "prims/jvmtiExport.hpp" | |
33 #include "runtime/sharedRuntime.hpp" | |
34 #include "runtime/thread.hpp" | |
35 #include "services/lowMemoryDetector.hpp" | |
36 #include "utilities/copy.hpp" | |
37 #ifdef TARGET_OS_FAMILY_linux | |
38 # include "thread_linux.inline.hpp" | |
39 #endif | |
40 #ifdef TARGET_OS_FAMILY_solaris | |
41 # include "thread_solaris.inline.hpp" | |
42 #endif | |
43 #ifdef TARGET_OS_FAMILY_windows | |
44 # include "thread_windows.inline.hpp" | |
45 #endif | |
3960 | 46 #ifdef TARGET_OS_FAMILY_bsd |
47 # include "thread_bsd.inline.hpp" | |
48 #endif | |
1972 | 49 |
0 | 50 // Inline allocation implementations. |
51 | |
52 void CollectedHeap::post_allocation_setup_common(KlassHandle klass, | |
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53 HeapWord* obj) { |
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54 post_allocation_setup_no_klass_install(klass, obj); |
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55 post_allocation_install_obj_klass(klass, oop(obj)); |
0 | 56 } |
57 | |
58 void CollectedHeap::post_allocation_setup_no_klass_install(KlassHandle klass, | |
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59 HeapWord* objPtr) { |
0 | 60 oop obj = (oop)objPtr; |
61 | |
62 assert(obj != NULL, "NULL object pointer"); | |
63 if (UseBiasedLocking && (klass() != NULL)) { | |
64 obj->set_mark(klass->prototype_header()); | |
65 } else { | |
66 // May be bootstrapping | |
67 obj->set_mark(markOopDesc::prototype()); | |
68 } | |
69 } | |
70 | |
71 void CollectedHeap::post_allocation_install_obj_klass(KlassHandle klass, | |
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72 oop obj) { |
0 | 73 // These asserts are kind of complicated because of klassKlass |
74 // and the beginning of the world. | |
75 assert(klass() != NULL || !Universe::is_fully_initialized(), "NULL klass"); | |
76 assert(klass() == NULL || klass()->is_klass(), "not a klass"); | |
77 assert(obj != NULL, "NULL object pointer"); | |
78 obj->set_klass(klass()); | |
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79 assert(!Universe::is_fully_initialized() || obj->klass() != NULL, |
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80 "missing klass"); |
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81 } |
0 | 82 |
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83 // Support for jvmti and dtrace |
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84 inline void post_allocation_notify(KlassHandle klass, oop obj) { |
481
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85 // support low memory notifications (no-op if not enabled) |
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86 LowMemoryDetector::detect_low_memory_for_collected_pools(); |
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87 |
0 | 88 // support for JVMTI VMObjectAlloc event (no-op if not enabled) |
89 JvmtiExport::vm_object_alloc_event_collector(obj); | |
90 | |
91 if (DTraceAllocProbes) { | |
92 // support for Dtrace object alloc event (no-op most of the time) | |
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93 if (klass() != NULL && klass()->name() != NULL) { |
0 | 94 SharedRuntime::dtrace_object_alloc(obj); |
95 } | |
96 } | |
97 } | |
98 | |
99 void CollectedHeap::post_allocation_setup_obj(KlassHandle klass, | |
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100 HeapWord* obj) { |
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101 post_allocation_setup_common(klass, obj); |
0 | 102 assert(Universe::is_bootstrapping() || |
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103 !((oop)obj)->is_array(), "must not be an array"); |
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104 // notify jvmti and dtrace |
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105 post_allocation_notify(klass, (oop)obj); |
0 | 106 } |
107 | |
108 void CollectedHeap::post_allocation_setup_array(KlassHandle klass, | |
109 HeapWord* obj, | |
110 int length) { | |
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111 // Set array length before setting the _klass field |
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112 // in post_allocation_setup_common() because the klass field |
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113 // indicates that the object is parsable by concurrent GC. |
0 | 114 assert(length >= 0, "length should be non-negative"); |
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115 ((arrayOop)obj)->set_length(length); |
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116 post_allocation_setup_common(klass, obj); |
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117 assert(((oop)obj)->is_array(), "must be an array"); |
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118 // notify jvmti and dtrace (must be after length is set for dtrace) |
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119 post_allocation_notify(klass, (oop)obj); |
0 | 120 } |
121 | |
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122 HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, TRAPS) { |
0 | 123 |
124 // Clear unhandled oops for memory allocation. Memory allocation might | |
125 // not take out a lock if from tlab, so clear here. | |
126 CHECK_UNHANDLED_OOPS_ONLY(THREAD->clear_unhandled_oops();) | |
127 | |
128 if (HAS_PENDING_EXCEPTION) { | |
129 NOT_PRODUCT(guarantee(false, "Should not allocate with exception pending")); | |
130 return NULL; // caller does a CHECK_0 too | |
131 } | |
132 | |
133 HeapWord* result = NULL; | |
134 if (UseTLAB) { | |
135 result = CollectedHeap::allocate_from_tlab(THREAD, size); | |
136 if (result != NULL) { | |
137 assert(!HAS_PENDING_EXCEPTION, | |
138 "Unexpected exception, will result in uninitialized storage"); | |
139 return result; | |
140 } | |
141 } | |
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142 bool gc_overhead_limit_was_exceeded = false; |
0 | 143 result = Universe::heap()->mem_allocate(size, |
144 &gc_overhead_limit_was_exceeded); | |
145 if (result != NULL) { | |
146 NOT_PRODUCT(Universe::heap()-> | |
147 check_for_non_bad_heap_word_value(result, size)); | |
148 assert(!HAS_PENDING_EXCEPTION, | |
149 "Unexpected exception, will result in uninitialized storage"); | |
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150 THREAD->incr_allocated_bytes(size * HeapWordSize); |
0 | 151 return result; |
152 } | |
153 | |
154 | |
155 if (!gc_overhead_limit_was_exceeded) { | |
156 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support | |
157 report_java_out_of_memory("Java heap space"); | |
158 | |
159 if (JvmtiExport::should_post_resource_exhausted()) { | |
160 JvmtiExport::post_resource_exhausted( | |
161 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_JAVA_HEAP, | |
162 "Java heap space"); | |
163 } | |
164 | |
165 THROW_OOP_0(Universe::out_of_memory_error_java_heap()); | |
166 } else { | |
167 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support | |
168 report_java_out_of_memory("GC overhead limit exceeded"); | |
169 | |
170 if (JvmtiExport::should_post_resource_exhausted()) { | |
171 JvmtiExport::post_resource_exhausted( | |
172 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_JAVA_HEAP, | |
173 "GC overhead limit exceeded"); | |
174 } | |
175 | |
176 THROW_OOP_0(Universe::out_of_memory_error_gc_overhead_limit()); | |
177 } | |
178 } | |
179 | |
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180 HeapWord* CollectedHeap::common_mem_allocate_init(size_t size, TRAPS) { |
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181 HeapWord* obj = common_mem_allocate_noinit(size, CHECK_NULL); |
0 | 182 init_obj(obj, size); |
183 return obj; | |
184 } | |
185 | |
186 HeapWord* CollectedHeap::allocate_from_tlab(Thread* thread, size_t size) { | |
187 assert(UseTLAB, "should use UseTLAB"); | |
188 | |
189 HeapWord* obj = thread->tlab().allocate(size); | |
190 if (obj != NULL) { | |
191 return obj; | |
192 } | |
193 // Otherwise... | |
194 return allocate_from_tlab_slow(thread, size); | |
195 } | |
196 | |
197 void CollectedHeap::init_obj(HeapWord* obj, size_t size) { | |
198 assert(obj != NULL, "cannot initialize NULL object"); | |
199 const size_t hs = oopDesc::header_size(); | |
200 assert(size >= hs, "unexpected object size"); | |
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201 ((oop)obj)->set_klass_gap(0); |
0 | 202 Copy::fill_to_aligned_words(obj + hs, size - hs); |
203 } | |
204 | |
205 oop CollectedHeap::obj_allocate(KlassHandle klass, int size, TRAPS) { | |
206 debug_only(check_for_valid_allocation_state()); | |
207 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
208 assert(size >= 0, "int won't convert to size_t"); | |
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209 HeapWord* obj = common_mem_allocate_init(size, CHECK_NULL); |
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210 post_allocation_setup_obj(klass, obj); |
0 | 211 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); |
212 return (oop)obj; | |
213 } | |
214 | |
215 oop CollectedHeap::array_allocate(KlassHandle klass, | |
216 int size, | |
217 int length, | |
218 TRAPS) { | |
219 debug_only(check_for_valid_allocation_state()); | |
220 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
221 assert(size >= 0, "int won't convert to size_t"); | |
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222 HeapWord* obj = common_mem_allocate_init(size, CHECK_NULL); |
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223 post_allocation_setup_array(klass, obj, length); |
0 | 224 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); |
225 return (oop)obj; | |
226 } | |
227 | |
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228 oop CollectedHeap::array_allocate_nozero(KlassHandle klass, |
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229 int size, |
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230 int length, |
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231 TRAPS) { |
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232 debug_only(check_for_valid_allocation_state()); |
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233 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); |
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234 assert(size >= 0, "int won't convert to size_t"); |
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235 HeapWord* obj = common_mem_allocate_noinit(size, CHECK_NULL); |
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236 ((oop)obj)->set_klass_gap(0); |
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237 post_allocation_setup_array(klass, obj, length); |
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238 #ifndef PRODUCT |
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239 const size_t hs = oopDesc::header_size()+1; |
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240 Universe::heap()->check_for_non_bad_heap_word_value(obj+hs, size-hs); |
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241 #endif |
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242 return (oop)obj; |
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243 } |
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244 |
0 | 245 // Returns "TRUE" if "p" is a method oop in the |
246 // current heap with high probability. NOTE: The main | |
247 // current consumers of this interface are Forte:: | |
248 // and ThreadProfiler::. In these cases, the | |
249 // interpreter frame from which "p" came, may be | |
250 // under construction when sampled asynchronously, so | |
251 // the clients want to check that it represents a | |
252 // valid method before using it. Nonetheless since | |
253 // the clients do not typically lock out GC, the | |
254 // predicate is_valid_method() is not stable, so | |
255 // it is possible that by the time "p" is used, it | |
256 // is no longer valid. | |
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257 inline bool CollectedHeap::is_valid_method(Method* p) const { |
0 | 258 return |
259 p != NULL && | |
260 | |
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261 // Check whether "method" is metadata |
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262 p->is_metadata() && |
0 | 263 |
264 // See if GC is active; however, there is still an | |
265 // apparently unavoidable window after this call | |
266 // and before the client of this interface uses "p". | |
267 // If the client chooses not to lock out GC, then | |
268 // it's a risk the client must accept. | |
269 !is_gc_active() && | |
270 | |
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271 // Check that p is a Method*. |
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272 p->is_method(); |
0 | 273 } |
274 | |
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275 inline void CollectedHeap::oop_iterate_no_header(OopClosure* cl) { |
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276 NoHeaderExtendedOopClosure no_header_cl(cl); |
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277 oop_iterate(&no_header_cl); |
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278 } |
0 | 279 |
280 #ifndef PRODUCT | |
281 | |
282 inline bool | |
283 CollectedHeap::promotion_should_fail(volatile size_t* count) { | |
284 // Access to count is not atomic; the value does not have to be exact. | |
285 if (PromotionFailureALot) { | |
286 const size_t gc_num = total_collections(); | |
287 const size_t elapsed_gcs = gc_num - _promotion_failure_alot_gc_number; | |
288 if (elapsed_gcs >= PromotionFailureALotInterval) { | |
289 // Test for unsigned arithmetic wrap-around. | |
290 if (++*count >= PromotionFailureALotCount) { | |
291 *count = 0; | |
292 return true; | |
293 } | |
294 } | |
295 } | |
296 return false; | |
297 } | |
298 | |
299 inline bool CollectedHeap::promotion_should_fail() { | |
300 return promotion_should_fail(&_promotion_failure_alot_count); | |
301 } | |
302 | |
303 inline void CollectedHeap::reset_promotion_should_fail(volatile size_t* count) { | |
304 if (PromotionFailureALot) { | |
305 _promotion_failure_alot_gc_number = total_collections(); | |
306 *count = 0; | |
307 } | |
308 } | |
309 | |
310 inline void CollectedHeap::reset_promotion_should_fail() { | |
311 reset_promotion_should_fail(&_promotion_failure_alot_count); | |
312 } | |
313 #endif // #ifndef PRODUCT | |
1972 | 314 |
315 #endif // SHARE_VM_GC_INTERFACE_COLLECTEDHEAP_INLINE_HPP |