Mercurial > hg > truffle
annotate src/share/vm/services/memoryPool.cpp @ 9597:d5c2b20e9d73
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 07 May 2013 01:59:12 +0200 |
parents | 42e370795a39 |
children | 71963b3f802a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 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 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "oops/oop.inline.hpp" | |
29 #include "runtime/handles.inline.hpp" | |
30 #include "runtime/javaCalls.hpp" | |
31 #include "services/lowMemoryDetector.hpp" | |
32 #include "services/management.hpp" | |
33 #include "services/memoryManager.hpp" | |
34 #include "services/memoryPool.hpp" | |
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35 #include "utilities/macros.hpp" |
0 | 36 |
37 MemoryPool::MemoryPool(const char* name, | |
38 PoolType type, | |
39 size_t init_size, | |
40 size_t max_size, | |
41 bool support_usage_threshold, | |
42 bool support_gc_threshold) { | |
43 _name = name; | |
44 _initial_size = init_size; | |
45 _max_size = max_size; | |
46 _memory_pool_obj = NULL; | |
47 _available_for_allocation = true; | |
48 _num_managers = 0; | |
49 _type = type; | |
50 | |
51 // initialize the max and init size of collection usage | |
52 _after_gc_usage = MemoryUsage(_initial_size, 0, 0, _max_size); | |
53 | |
54 _usage_sensor = NULL; | |
55 _gc_usage_sensor = NULL; | |
56 // usage threshold supports both high and low threshold | |
57 _usage_threshold = new ThresholdSupport(support_usage_threshold, support_usage_threshold); | |
58 // gc usage threshold supports only high threshold | |
59 _gc_usage_threshold = new ThresholdSupport(support_gc_threshold, support_gc_threshold); | |
60 } | |
61 | |
62 void MemoryPool::add_manager(MemoryManager* mgr) { | |
63 assert(_num_managers < MemoryPool::max_num_managers, "_num_managers exceeds the max"); | |
64 if (_num_managers < MemoryPool::max_num_managers) { | |
65 _managers[_num_managers] = mgr; | |
66 _num_managers++; | |
67 } | |
68 } | |
69 | |
70 | |
71 // Returns an instanceHandle of a MemoryPool object. | |
72 // It creates a MemoryPool instance when the first time | |
73 // this function is called. | |
74 instanceOop MemoryPool::get_memory_pool_instance(TRAPS) { | |
75 // Must do an acquire so as to force ordering of subsequent | |
76 // loads from anything _memory_pool_obj points to or implies. | |
77 instanceOop pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); | |
78 if (pool_obj == NULL) { | |
79 // It's ok for more than one thread to execute the code up to the locked region. | |
80 // Extra pool instances will just be gc'ed. | |
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81 Klass* k = Management::sun_management_ManagementFactory_klass(CHECK_NULL); |
0 | 82 instanceKlassHandle ik(THREAD, k); |
83 | |
84 Handle pool_name = java_lang_String::create_from_str(_name, CHECK_NULL); | |
85 jlong usage_threshold_value = (_usage_threshold->is_high_threshold_supported() ? 0 : -1L); | |
86 jlong gc_usage_threshold_value = (_gc_usage_threshold->is_high_threshold_supported() ? 0 : -1L); | |
87 | |
88 JavaValue result(T_OBJECT); | |
89 JavaCallArguments args; | |
90 args.push_oop(pool_name); // Argument 1 | |
91 args.push_int((int) is_heap()); // Argument 2 | |
92 | |
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93 Symbol* method_name = vmSymbols::createMemoryPool_name(); |
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94 Symbol* signature = vmSymbols::createMemoryPool_signature(); |
0 | 95 |
96 args.push_long(usage_threshold_value); // Argument 3 | |
97 args.push_long(gc_usage_threshold_value); // Argument 4 | |
98 | |
99 JavaCalls::call_static(&result, | |
100 ik, | |
101 method_name, | |
102 signature, | |
103 &args, | |
104 CHECK_NULL); | |
105 | |
106 instanceOop p = (instanceOop) result.get_jobject(); | |
107 instanceHandle pool(THREAD, p); | |
108 | |
109 { | |
110 // Get lock since another thread may have create the instance | |
111 MutexLocker ml(Management_lock); | |
112 | |
113 // Check if another thread has created the pool. We reload | |
114 // _memory_pool_obj here because some other thread may have | |
115 // initialized it while we were executing the code before the lock. | |
116 // | |
117 // The lock has done an acquire, so the load can't float above it, | |
118 // but we need to do a load_acquire as above. | |
119 pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); | |
120 if (pool_obj != NULL) { | |
121 return pool_obj; | |
122 } | |
123 | |
124 // Get the address of the object we created via call_special. | |
125 pool_obj = pool(); | |
126 | |
127 // Use store barrier to make sure the memory accesses associated | |
128 // with creating the pool are visible before publishing its address. | |
129 // The unlock will publish the store to _memory_pool_obj because | |
130 // it does a release first. | |
131 OrderAccess::release_store_ptr(&_memory_pool_obj, pool_obj); | |
132 } | |
133 } | |
134 | |
135 return pool_obj; | |
136 } | |
137 | |
138 inline static size_t get_max_value(size_t val1, size_t val2) { | |
139 return (val1 > val2 ? val1 : val2); | |
140 } | |
141 | |
142 void MemoryPool::record_peak_memory_usage() { | |
143 // Caller in JDK is responsible for synchronization - | |
144 // acquire the lock for this memory pool before calling VM | |
145 MemoryUsage usage = get_memory_usage(); | |
146 size_t peak_used = get_max_value(usage.used(), _peak_usage.used()); | |
147 size_t peak_committed = get_max_value(usage.committed(), _peak_usage.committed()); | |
148 size_t peak_max_size = get_max_value(usage.max_size(), _peak_usage.max_size()); | |
149 | |
150 _peak_usage = MemoryUsage(initial_size(), peak_used, peak_committed, peak_max_size); | |
151 } | |
152 | |
153 static void set_sensor_obj_at(SensorInfo** sensor_ptr, instanceHandle sh) { | |
154 assert(*sensor_ptr == NULL, "Should be called only once"); | |
155 SensorInfo* sensor = new SensorInfo(); | |
156 sensor->set_sensor(sh()); | |
157 *sensor_ptr = sensor; | |
158 } | |
159 | |
160 void MemoryPool::set_usage_sensor_obj(instanceHandle sh) { | |
161 set_sensor_obj_at(&_usage_sensor, sh); | |
162 } | |
163 | |
164 void MemoryPool::set_gc_usage_sensor_obj(instanceHandle sh) { | |
165 set_sensor_obj_at(&_gc_usage_sensor, sh); | |
166 } | |
167 | |
168 void MemoryPool::oops_do(OopClosure* f) { | |
169 f->do_oop((oop*) &_memory_pool_obj); | |
170 if (_usage_sensor != NULL) { | |
171 _usage_sensor->oops_do(f); | |
172 } | |
173 if (_gc_usage_sensor != NULL) { | |
174 _gc_usage_sensor->oops_do(f); | |
175 } | |
176 } | |
177 | |
178 ContiguousSpacePool::ContiguousSpacePool(ContiguousSpace* space, | |
179 const char* name, | |
180 PoolType type, | |
181 size_t max_size, | |
182 bool support_usage_threshold) : | |
183 CollectedMemoryPool(name, type, space->capacity(), max_size, | |
184 support_usage_threshold), _space(space) { | |
185 } | |
186 | |
187 MemoryUsage ContiguousSpacePool::get_memory_usage() { | |
188 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
189 size_t used = used_in_bytes(); | |
190 size_t committed = _space->capacity(); | |
191 | |
192 return MemoryUsage(initial_size(), used, committed, maxSize); | |
193 } | |
194 | |
195 SurvivorContiguousSpacePool::SurvivorContiguousSpacePool(DefNewGeneration* gen, | |
196 const char* name, | |
197 PoolType type, | |
198 size_t max_size, | |
199 bool support_usage_threshold) : | |
200 CollectedMemoryPool(name, type, gen->from()->capacity(), max_size, | |
201 support_usage_threshold), _gen(gen) { | |
202 } | |
203 | |
204 MemoryUsage SurvivorContiguousSpacePool::get_memory_usage() { | |
205 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
206 size_t used = used_in_bytes(); | |
207 size_t committed = committed_in_bytes(); | |
208 | |
209 return MemoryUsage(initial_size(), used, committed, maxSize); | |
210 } | |
211 | |
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212 #if INCLUDE_ALL_GCS |
0 | 213 CompactibleFreeListSpacePool::CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, |
214 const char* name, | |
215 PoolType type, | |
216 size_t max_size, | |
217 bool support_usage_threshold) : | |
218 CollectedMemoryPool(name, type, space->capacity(), max_size, | |
219 support_usage_threshold), _space(space) { | |
220 } | |
221 | |
222 MemoryUsage CompactibleFreeListSpacePool::get_memory_usage() { | |
223 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
224 size_t used = used_in_bytes(); | |
225 size_t committed = _space->capacity(); | |
226 | |
227 return MemoryUsage(initial_size(), used, committed, maxSize); | |
228 } | |
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229 #endif // INCLUDE_ALL_GCS |
0 | 230 |
231 GenerationPool::GenerationPool(Generation* gen, | |
232 const char* name, | |
233 PoolType type, | |
234 bool support_usage_threshold) : | |
235 CollectedMemoryPool(name, type, gen->capacity(), gen->max_capacity(), | |
236 support_usage_threshold), _gen(gen) { | |
237 } | |
238 | |
239 MemoryUsage GenerationPool::get_memory_usage() { | |
240 size_t used = used_in_bytes(); | |
241 size_t committed = _gen->capacity(); | |
242 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
243 | |
244 return MemoryUsage(initial_size(), used, committed, maxSize); | |
245 } | |
246 | |
247 CodeHeapPool::CodeHeapPool(CodeHeap* codeHeap, const char* name, bool support_usage_threshold) : | |
248 MemoryPool(name, NonHeap, codeHeap->capacity(), codeHeap->max_capacity(), | |
249 support_usage_threshold, false), _codeHeap(codeHeap) { | |
250 } | |
251 | |
252 MemoryUsage CodeHeapPool::get_memory_usage() { | |
253 size_t used = used_in_bytes(); | |
254 size_t committed = _codeHeap->capacity(); | |
255 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
256 | |
257 return MemoryUsage(initial_size(), used, committed, maxSize); | |
258 } |