Mercurial > hg > graal-compiler
annotate src/share/vm/services/memoryManager.cpp @ 1751:2528b5bd749c
6980262: Memory leak when exception is thrown in static initializer
Summary: Use resource memory instead of c-heap for the exception message
Reviewed-by: phh, jmasa
author | kamg |
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date | Fri, 27 Aug 2010 15:05:28 -0400 |
parents | f6f3eef8a521 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2005, 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 | |
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::set_gc_usage(int pool_index, MemoryUsage usage, bool before_gc) { | |
170 MemoryUsage* gc_usage_array; | |
171 if (before_gc) { | |
172 gc_usage_array = _before_gc_usage_array; | |
173 } else { | |
174 gc_usage_array = _after_gc_usage_array; | |
175 } | |
176 gc_usage_array[pool_index] = usage; | |
177 } | |
178 | |
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179 void GCStatInfo::clear() { |
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180 _index = 0; |
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181 _start_time = 0L; |
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182 _end_time = 0L; |
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183 size_t len = _usage_array_size * sizeof(MemoryUsage); |
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184 memset(_before_gc_usage_array, 0, len); |
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185 memset(_after_gc_usage_array, 0, len); |
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186 } |
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187 |
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188 |
0 | 189 GCMemoryManager::GCMemoryManager() : MemoryManager() { |
190 _num_collections = 0; | |
191 _last_gc_stat = NULL; | |
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192 _last_gc_lock = new Mutex(Mutex::leaf, "_last_gc_lock", true); |
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193 _current_gc_stat = NULL; |
0 | 194 _num_gc_threads = 1; |
195 } | |
196 | |
197 GCMemoryManager::~GCMemoryManager() { | |
198 delete _last_gc_stat; | |
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199 delete _last_gc_lock; |
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200 delete _current_gc_stat; |
0 | 201 } |
202 | |
203 void GCMemoryManager::initialize_gc_stat_info() { | |
204 assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools"); | |
205 _last_gc_stat = new GCStatInfo(MemoryService::num_memory_pools()); | |
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206 _current_gc_stat = new GCStatInfo(MemoryService::num_memory_pools()); |
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207 // tracking concurrent collections we need two objects: one to update, and one to |
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208 // hold the publicly available "last (completed) gc" information. |
0 | 209 } |
210 | |
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211 void GCMemoryManager::gc_begin(bool recordGCBeginTime, bool recordPreGCUsage, |
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212 bool recordAccumulatedGCTime) { |
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213 assert(_last_gc_stat != NULL && _current_gc_stat != NULL, "Just checking"); |
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214 if (recordAccumulatedGCTime) { |
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215 _accumulated_timer.start(); |
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216 } |
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217 // _num_collections now increases in gc_end, to count completed collections |
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218 if (recordGCBeginTime) { |
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219 _current_gc_stat->set_index(_num_collections+1); |
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220 _current_gc_stat->set_start_time(Management::timestamp()); |
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221 } |
0 | 222 |
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223 if (recordPreGCUsage) { |
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224 // Keep memory usage of all memory pools |
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225 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { |
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226 MemoryPool* pool = MemoryService::get_memory_pool(i); |
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227 MemoryUsage usage = pool->get_memory_usage(); |
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228 _current_gc_stat->set_before_gc_usage(i, usage); |
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229 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin, |
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230 name(), strlen(name()), |
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231 pool->name(), strlen(pool->name()), |
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232 usage.init_size(), usage.used(), |
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233 usage.committed(), usage.max_size()); |
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234 } |
0 | 235 } |
236 } | |
237 | |
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238 // A collector MUST, even if it does not complete for some reason, |
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239 // make a TraceMemoryManagerStats object where countCollection is true, |
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240 // to ensure the current gc stat is placed in _last_gc_stat. |
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241 void GCMemoryManager::gc_end(bool recordPostGCUsage, |
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242 bool recordAccumulatedGCTime, |
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243 bool recordGCEndTime, bool countCollection) { |
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244 if (recordAccumulatedGCTime) { |
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245 _accumulated_timer.stop(); |
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246 } |
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247 if (recordGCEndTime) { |
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248 _current_gc_stat->set_end_time(Management::timestamp()); |
0 | 249 } |
250 | |
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251 if (recordPostGCUsage) { |
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252 int i; |
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253 // keep the last gc statistics for all memory pools |
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254 for (i = 0; i < MemoryService::num_memory_pools(); i++) { |
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255 MemoryPool* pool = MemoryService::get_memory_pool(i); |
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256 MemoryUsage usage = pool->get_memory_usage(); |
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257 |
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258 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end, |
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259 name(), strlen(name()), |
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260 pool->name(), strlen(pool->name()), |
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261 usage.init_size(), usage.used(), |
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262 usage.committed(), usage.max_size()); |
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263 |
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264 _current_gc_stat->set_after_gc_usage(i, usage); |
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265 } |
0 | 266 |
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267 // Set last collection usage of the memory pools managed by this collector |
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268 for (i = 0; i < num_memory_pools(); i++) { |
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269 MemoryPool* pool = get_memory_pool(i); |
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270 MemoryUsage usage = pool->get_memory_usage(); |
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271 |
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272 // Compare with GC usage threshold |
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273 pool->set_last_collection_usage(usage); |
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274 LowMemoryDetector::detect_after_gc_memory(pool); |
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275 } |
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276 } |
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277 if (countCollection) { |
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278 _num_collections++; |
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279 // alternately update two objects making one public when complete |
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280 { |
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281 MutexLockerEx ml(_last_gc_lock, Mutex::_no_safepoint_check_flag); |
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282 GCStatInfo *tmp = _last_gc_stat; |
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283 _last_gc_stat = _current_gc_stat; |
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284 _current_gc_stat = tmp; |
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285 // reset the current stat for diagnosability purposes |
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286 _current_gc_stat->clear(); |
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287 } |
0 | 288 } |
289 } | |
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290 |
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291 size_t GCMemoryManager::get_last_gc_stat(GCStatInfo* dest) { |
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292 MutexLockerEx ml(_last_gc_lock, Mutex::_no_safepoint_check_flag); |
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293 if (_last_gc_stat->gc_index() != 0) { |
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294 dest->set_index(_last_gc_stat->gc_index()); |
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295 dest->set_start_time(_last_gc_stat->start_time()); |
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296 dest->set_end_time(_last_gc_stat->end_time()); |
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297 assert(dest->usage_array_size() == _last_gc_stat->usage_array_size(), |
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298 "Must have same array size"); |
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299 size_t len = dest->usage_array_size() * sizeof(MemoryUsage); |
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300 memcpy(dest->before_gc_usage_array(), _last_gc_stat->before_gc_usage_array(), len); |
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301 memcpy(dest->after_gc_usage_array(), _last_gc_stat->after_gc_usage_array(), len); |
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302 } |
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303 return _last_gc_stat->gc_index(); |
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304 } |