Mercurial > hg > truffle
annotate src/share/vm/services/memoryManager.cpp @ 1293:51db1e4b379d
6932536: JSR 292 modified JDK MethodHandlesTest fails on x86_64
Summary: A modified MethodHandlesTest revealed two bugs on x86_64.
Reviewed-by: never, jrose
author | twisti |
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date | Mon, 08 Mar 2010 04:46:30 -0800 |
parents | db0d5eba9d20 |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_memoryManager.cpp.incl" | |
27 | |
28 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__begin, char*, int, char*, int, | |
29 size_t, size_t, size_t, size_t); | |
30 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__end, char*, int, char*, int, | |
31 size_t, size_t, size_t, size_t); | |
32 | |
33 MemoryManager::MemoryManager() { | |
34 _num_pools = 0; | |
35 _memory_mgr_obj = NULL; | |
36 } | |
37 | |
38 void MemoryManager::add_pool(MemoryPool* pool) { | |
39 assert(_num_pools < MemoryManager::max_num_pools, "_num_pools exceeds the max"); | |
40 if (_num_pools < MemoryManager::max_num_pools) { | |
41 _pools[_num_pools] = pool; | |
42 _num_pools++; | |
43 } | |
44 pool->add_manager(this); | |
45 } | |
46 | |
47 MemoryManager* MemoryManager::get_code_cache_memory_manager() { | |
48 return (MemoryManager*) new CodeCacheMemoryManager(); | |
49 } | |
50 | |
51 GCMemoryManager* MemoryManager::get_copy_memory_manager() { | |
52 return (GCMemoryManager*) new CopyMemoryManager(); | |
53 } | |
54 | |
55 GCMemoryManager* MemoryManager::get_msc_memory_manager() { | |
56 return (GCMemoryManager*) new MSCMemoryManager(); | |
57 } | |
58 | |
59 GCMemoryManager* MemoryManager::get_parnew_memory_manager() { | |
60 return (GCMemoryManager*) new ParNewMemoryManager(); | |
61 } | |
62 | |
63 GCMemoryManager* MemoryManager::get_cms_memory_manager() { | |
64 return (GCMemoryManager*) new CMSMemoryManager(); | |
65 } | |
66 | |
67 GCMemoryManager* MemoryManager::get_psScavenge_memory_manager() { | |
68 return (GCMemoryManager*) new PSScavengeMemoryManager(); | |
69 } | |
70 | |
71 GCMemoryManager* MemoryManager::get_psMarkSweep_memory_manager() { | |
72 return (GCMemoryManager*) new PSMarkSweepMemoryManager(); | |
73 } | |
74 | |
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75 GCMemoryManager* MemoryManager::get_g1YoungGen_memory_manager() { |
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76 return (GCMemoryManager*) new G1YoungGenMemoryManager(); |
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77 } |
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78 |
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79 GCMemoryManager* MemoryManager::get_g1OldGen_memory_manager() { |
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80 return (GCMemoryManager*) new G1OldGenMemoryManager(); |
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81 } |
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82 |
0 | 83 instanceOop MemoryManager::get_memory_manager_instance(TRAPS) { |
84 // Must do an acquire so as to force ordering of subsequent | |
85 // loads from anything _memory_mgr_obj points to or implies. | |
86 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); | |
87 if (mgr_obj == NULL) { | |
88 // It's ok for more than one thread to execute the code up to the locked region. | |
89 // Extra manager instances will just be gc'ed. | |
90 klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_0); | |
91 instanceKlassHandle ik(THREAD, k); | |
92 | |
93 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0); | |
94 | |
95 JavaValue result(T_OBJECT); | |
96 JavaCallArguments args; | |
97 args.push_oop(mgr_name); // Argument 1 | |
98 | |
99 symbolHandle method_name; | |
100 symbolHandle signature; | |
101 if (is_gc_memory_manager()) { | |
102 method_name = vmSymbolHandles::createGarbageCollector_name(); | |
103 signature = vmSymbolHandles::createGarbageCollector_signature(); | |
104 args.push_oop(Handle()); // Argument 2 (for future extension) | |
105 } else { | |
106 method_name = vmSymbolHandles::createMemoryManager_name(); | |
107 signature = vmSymbolHandles::createMemoryManager_signature(); | |
108 } | |
109 | |
110 JavaCalls::call_static(&result, | |
111 ik, | |
112 method_name, | |
113 signature, | |
114 &args, | |
115 CHECK_0); | |
116 | |
117 instanceOop m = (instanceOop) result.get_jobject(); | |
118 instanceHandle mgr(THREAD, m); | |
119 | |
120 { | |
121 // Get lock before setting _memory_mgr_obj | |
122 // since another thread may have created the instance | |
123 MutexLocker ml(Management_lock); | |
124 | |
125 // Check if another thread has created the management object. We reload | |
126 // _memory_mgr_obj here because some other thread may have initialized | |
127 // it while we were executing the code before the lock. | |
128 // | |
129 // The lock has done an acquire, so the load can't float above it, but | |
130 // we need to do a load_acquire as above. | |
131 mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); | |
132 if (mgr_obj != NULL) { | |
133 return mgr_obj; | |
134 } | |
135 | |
136 // Get the address of the object we created via call_special. | |
137 mgr_obj = mgr(); | |
138 | |
139 // Use store barrier to make sure the memory accesses associated | |
140 // with creating the management object are visible before publishing | |
141 // its address. The unlock will publish the store to _memory_mgr_obj | |
142 // because it does a release first. | |
143 OrderAccess::release_store_ptr(&_memory_mgr_obj, mgr_obj); | |
144 } | |
145 } | |
146 | |
147 return mgr_obj; | |
148 } | |
149 | |
150 void MemoryManager::oops_do(OopClosure* f) { | |
151 f->do_oop((oop*) &_memory_mgr_obj); | |
152 } | |
153 | |
154 GCStatInfo::GCStatInfo(int num_pools) { | |
155 // initialize the arrays for memory usage | |
156 _before_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools); | |
157 _after_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools); | |
158 size_t len = num_pools * sizeof(MemoryUsage); | |
159 memset(_before_gc_usage_array, 0, len); | |
160 memset(_after_gc_usage_array, 0, len); | |
161 _usage_array_size = num_pools; | |
162 } | |
163 | |
164 GCStatInfo::~GCStatInfo() { | |
165 FREE_C_HEAP_ARRAY(MemoryUsage*, _before_gc_usage_array); | |
166 FREE_C_HEAP_ARRAY(MemoryUsage*, _after_gc_usage_array); | |
167 } | |
168 | |
169 void GCStatInfo::copy_stat(GCStatInfo* stat) { | |
170 set_index(stat->gc_index()); | |
171 set_start_time(stat->start_time()); | |
172 set_end_time(stat->end_time()); | |
173 assert(_usage_array_size == stat->usage_array_size(), "Must have same array size"); | |
174 for (int i = 0; i < _usage_array_size; i++) { | |
175 set_before_gc_usage(i, stat->before_gc_usage_for_pool(i)); | |
176 set_after_gc_usage(i, stat->after_gc_usage_for_pool(i)); | |
177 } | |
178 } | |
179 | |
180 void GCStatInfo::set_gc_usage(int pool_index, MemoryUsage usage, bool before_gc) { | |
181 MemoryUsage* gc_usage_array; | |
182 if (before_gc) { | |
183 gc_usage_array = _before_gc_usage_array; | |
184 } else { | |
185 gc_usage_array = _after_gc_usage_array; | |
186 } | |
187 gc_usage_array[pool_index] = usage; | |
188 } | |
189 | |
190 GCMemoryManager::GCMemoryManager() : MemoryManager() { | |
191 _num_collections = 0; | |
192 _last_gc_stat = NULL; | |
193 _num_gc_threads = 1; | |
194 } | |
195 | |
196 GCMemoryManager::~GCMemoryManager() { | |
197 delete _last_gc_stat; | |
198 } | |
199 | |
200 void GCMemoryManager::initialize_gc_stat_info() { | |
201 assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools"); | |
202 _last_gc_stat = new GCStatInfo(MemoryService::num_memory_pools()); | |
203 } | |
204 | |
205 void GCMemoryManager::gc_begin() { | |
206 assert(_last_gc_stat != NULL, "Just checking"); | |
207 _accumulated_timer.start(); | |
208 _num_collections++; | |
209 _last_gc_stat->set_index(_num_collections); | |
210 _last_gc_stat->set_start_time(Management::timestamp()); | |
211 | |
212 // Keep memory usage of all memory pools | |
213 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
214 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
215 MemoryUsage usage = pool->get_memory_usage(); | |
216 _last_gc_stat->set_before_gc_usage(i, usage); | |
217 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin, | |
218 name(), strlen(name()), | |
219 pool->name(), strlen(pool->name()), | |
220 usage.init_size(), usage.used(), | |
221 usage.committed(), usage.max_size()); | |
222 } | |
223 } | |
224 | |
225 void GCMemoryManager::gc_end() { | |
226 _accumulated_timer.stop(); | |
227 _last_gc_stat->set_end_time(Management::timestamp()); | |
228 | |
229 int i; | |
230 // keep the last gc statistics for all memory pools | |
231 for (i = 0; i < MemoryService::num_memory_pools(); i++) { | |
232 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
233 MemoryUsage usage = pool->get_memory_usage(); | |
234 | |
235 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end, | |
236 name(), strlen(name()), | |
237 pool->name(), strlen(pool->name()), | |
238 usage.init_size(), usage.used(), | |
239 usage.committed(), usage.max_size()); | |
240 | |
241 _last_gc_stat->set_after_gc_usage(i, usage); | |
242 } | |
243 | |
244 // Set last collection usage of the memory pools managed by this collector | |
245 for (i = 0; i < num_memory_pools(); i++) { | |
246 MemoryPool* pool = get_memory_pool(i); | |
247 MemoryUsage usage = pool->get_memory_usage(); | |
248 | |
249 // Compare with GC usage threshold | |
250 pool->set_last_collection_usage(usage); | |
251 LowMemoryDetector::detect_after_gc_memory(pool); | |
252 } | |
253 } |