Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiCodeBlobEvents.cpp @ 12355:cefad50507d8
Merge with hs25-b53
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Fri, 11 Oct 2013 10:38:03 +0200 |
| parents | e522a00b91aa |
| children | d8041d695d19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6842
b9a9ed0f8eeb
7197424: update copyright year to match last edit in jdk8 hotspot repository
mikael
parents:
6197
diff
changeset
|
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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1253
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1253
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1253
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "code/codeBlob.hpp" | |
| 27 #include "code/codeCache.hpp" | |
| 28 #include "code/scopeDesc.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "oops/oop.inline.hpp" | |
| 31 #include "prims/jvmtiCodeBlobEvents.hpp" | |
| 32 #include "prims/jvmtiExport.hpp" | |
| 33 #include "runtime/handles.hpp" | |
| 34 #include "runtime/handles.inline.hpp" | |
| 35 #include "runtime/vmThread.hpp" | |
| 0 | 36 |
| 37 // Support class to collect a list of the non-nmethod CodeBlobs in | |
| 38 // the CodeCache. | |
| 39 // | |
| 40 // This class actually creates a list of JvmtiCodeBlobDesc - each JvmtiCodeBlobDesc | |
| 41 // describes a single CodeBlob in the CodeCache. Note that collection is | |
| 42 // done to a static list - this is because CodeCache::blobs_do is defined | |
| 43 // as void CodeCache::blobs_do(void f(CodeBlob* nm)) and hence requires | |
| 44 // a C or static method. | |
| 45 // | |
| 46 // Usage :- | |
| 47 // | |
| 48 // CodeBlobCollector collector; | |
| 49 // | |
| 50 // collector.collect(); | |
| 51 // JvmtiCodeBlobDesc* blob = collector.first(); | |
| 52 // while (blob != NULL) { | |
| 53 // : | |
| 54 // blob = collector.next(); | |
| 55 // } | |
| 56 // | |
| 57 | |
| 58 class CodeBlobCollector : StackObj { | |
| 59 private: | |
| 60 GrowableArray<JvmtiCodeBlobDesc*>* _code_blobs; // collected blobs | |
| 61 int _pos; // iterator position | |
| 62 | |
| 63 // used during a collection | |
| 64 static GrowableArray<JvmtiCodeBlobDesc*>* _global_code_blobs; | |
| 65 static void do_blob(CodeBlob* cb); | |
| 66 public: | |
| 67 CodeBlobCollector() { | |
| 68 _code_blobs = NULL; | |
| 69 _pos = -1; | |
| 70 } | |
| 71 ~CodeBlobCollector() { | |
| 72 if (_code_blobs != NULL) { | |
| 73 for (int i=0; i<_code_blobs->length(); i++) { | |
| 74 FreeHeap(_code_blobs->at(i)); | |
| 75 } | |
| 76 delete _code_blobs; | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 // collect list of code blobs in the cache | |
| 81 void collect(); | |
| 82 | |
| 83 // iteration support - return first code blob | |
| 84 JvmtiCodeBlobDesc* first() { | |
| 85 assert(_code_blobs != NULL, "not collected"); | |
| 86 if (_code_blobs->length() == 0) { | |
| 87 return NULL; | |
| 88 } | |
| 89 _pos = 0; | |
| 90 return _code_blobs->at(0); | |
| 91 } | |
| 92 | |
| 93 // iteration support - return next code blob | |
| 94 JvmtiCodeBlobDesc* next() { | |
| 95 assert(_pos >= 0, "iteration not started"); | |
| 96 if (_pos+1 >= _code_blobs->length()) { | |
| 97 return NULL; | |
| 98 } | |
| 99 return _code_blobs->at(++_pos); | |
| 100 } | |
| 101 | |
| 102 }; | |
| 103 | |
| 104 // used during collection | |
| 105 GrowableArray<JvmtiCodeBlobDesc*>* CodeBlobCollector::_global_code_blobs; | |
| 106 | |
| 107 | |
| 108 // called for each CodeBlob in the CodeCache | |
| 109 // | |
| 110 // This function filters out nmethods as it is only interested in | |
| 111 // other CodeBlobs. This function also filters out CodeBlobs that have | |
| 112 // a duplicate starting address as previous blobs. This is needed to | |
| 113 // handle the case where multiple stubs are generated into a single | |
| 114 // BufferBlob. | |
| 115 | |
| 116 void CodeBlobCollector::do_blob(CodeBlob* cb) { | |
| 117 | |
| 118 // ignore nmethods | |
| 119 if (cb->is_nmethod()) { | |
| 120 return; | |
| 121 } | |
| 122 | |
| 123 // check if this starting address has been seen already - the | |
| 124 // assumption is that stubs are inserted into the list before the | |
| 125 // enclosing BufferBlobs. | |
| 1748 | 126 address addr = cb->code_begin(); |
| 0 | 127 for (int i=0; i<_global_code_blobs->length(); i++) { |
| 128 JvmtiCodeBlobDesc* scb = _global_code_blobs->at(i); | |
| 129 if (addr == scb->code_begin()) { | |
| 130 return; | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 // record the CodeBlob details as a JvmtiCodeBlobDesc | |
| 1748 | 135 JvmtiCodeBlobDesc* scb = new JvmtiCodeBlobDesc(cb->name(), cb->code_begin(), cb->code_end()); |
| 0 | 136 _global_code_blobs->append(scb); |
| 137 } | |
| 138 | |
| 139 | |
| 140 // collects a list of CodeBlobs in the CodeCache. | |
| 141 // | |
| 142 // The created list is growable array of JvmtiCodeBlobDesc - each one describes | |
| 143 // a CodeBlob. Note that the list is static - this is because CodeBlob::blobs_do | |
| 144 // requires a a C or static function so we can't use an instance function. This | |
| 145 // isn't a problem as the iteration is serial anyway as we need the CodeCache_lock | |
| 146 // to iterate over the code cache. | |
| 147 // | |
| 148 // Note that the CodeBlobs in the CodeCache will include BufferBlobs that may | |
| 149 // contain multiple stubs. As a profiler is interested in the stubs rather than | |
| 150 // the enclosing container we first iterate over the stub code descriptors so | |
| 151 // that the stubs go into the list first. do_blob will then filter out the | |
| 152 // enclosing blobs if the starting address of the enclosing blobs matches the | |
| 153 // starting address of first stub generated in the enclosing blob. | |
| 154 | |
| 155 void CodeBlobCollector::collect() { | |
| 156 assert_locked_or_safepoint(CodeCache_lock); | |
| 157 assert(_global_code_blobs == NULL, "checking"); | |
| 158 | |
| 159 // create the global list | |
| 6197 | 160 _global_code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(50,true); |
| 0 | 161 |
| 162 // iterate over the stub code descriptors and put them in the list first. | |
| 163 int index = 0; | |
| 164 StubCodeDesc* desc; | |
| 165 while ((desc = StubCodeDesc::desc_for_index(++index)) != NULL) { | |
| 166 _global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end())); | |
| 167 } | |
| 168 | |
| 169 // next iterate over all the non-nmethod code blobs and add them to | |
| 170 // the list - as noted above this will filter out duplicates and | |
| 171 // enclosing blobs. | |
| 172 CodeCache::blobs_do(do_blob); | |
| 173 | |
| 174 // make the global list the instance list so that it can be used | |
| 175 // for other iterations. | |
| 176 _code_blobs = _global_code_blobs; | |
| 177 _global_code_blobs = NULL; | |
| 178 } | |
| 179 | |
| 180 | |
| 181 // Generate a DYNAMIC_CODE_GENERATED event for each non-nmethod code blob. | |
| 182 | |
| 183 jvmtiError JvmtiCodeBlobEvents::generate_dynamic_code_events(JvmtiEnv* env) { | |
| 184 CodeBlobCollector collector; | |
| 185 | |
|
1633
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
186 // First collect all the code blobs. This has to be done in a |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
187 // single pass over the code cache with CodeCache_lock held because |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
188 // there isn't any safe way to iterate over regular CodeBlobs since |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
189 // they can be freed at any point. |
| 0 | 190 { |
| 191 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 192 collector.collect(); | |
| 193 } | |
| 194 | |
| 195 // iterate over the collected list and post an event for each blob | |
| 196 JvmtiCodeBlobDesc* blob = collector.first(); | |
| 197 while (blob != NULL) { | |
| 198 JvmtiExport::post_dynamic_code_generated(env, blob->name(), blob->code_begin(), blob->code_end()); | |
| 199 blob = collector.next(); | |
| 200 } | |
| 201 return JVMTI_ERROR_NONE; | |
| 202 } | |
| 203 | |
| 204 | |
| 205 // Generate a COMPILED_METHOD_LOAD event for each nnmethod | |
| 206 jvmtiError JvmtiCodeBlobEvents::generate_compiled_method_load_events(JvmtiEnv* env) { | |
| 207 HandleMark hm; | |
| 208 | |
|
1633
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
209 // Walk the CodeCache notifying for live nmethods. The code cache |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
210 // may be changing while this is happening which is ok since newly |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
211 // created nmethod will notify normally and nmethods which are freed |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
212 // can be safely skipped. |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
213 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
214 nmethod* current = CodeCache::first_nmethod(); |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
215 while (current != NULL) { |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
216 // Only notify for live nmethods |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
217 if (current->is_alive()) { |
|
1649
a528509c992b
6968336: VM crash guarantee(!nm->is_zombie()) failed: cannot lock a zombie method
never
parents:
1633
diff
changeset
|
218 // Lock the nmethod so it can't be freed |
|
a528509c992b
6968336: VM crash guarantee(!nm->is_zombie()) failed: cannot lock a zombie method
never
parents:
1633
diff
changeset
|
219 nmethodLocker nml(current); |
|
a528509c992b
6968336: VM crash guarantee(!nm->is_zombie()) failed: cannot lock a zombie method
never
parents:
1633
diff
changeset
|
220 |
|
1633
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
221 // Don't hold the lock over the notify or jmethodID creation |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
222 MutexUnlockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
223 current->get_and_cache_jmethod_id(); |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
224 JvmtiExport::post_compiled_method_load(current); |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
225 } |
|
65b0c03b165d
6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
never
parents:
1616
diff
changeset
|
226 current = CodeCache::next_nmethod(current); |
| 0 | 227 } |
| 228 return JVMTI_ERROR_NONE; | |
| 229 } | |
| 230 | |
| 231 | |
| 232 // create a C-heap allocated address location map for an nmethod | |
| 233 void JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nmethod *nm, | |
| 234 jvmtiAddrLocationMap** map_ptr, | |
| 235 jint *map_length_ptr) | |
| 236 { | |
| 237 ResourceMark rm; | |
| 238 jvmtiAddrLocationMap* map = NULL; | |
| 239 jint map_length = 0; | |
| 240 | |
| 241 | |
| 242 // Generate line numbers using PcDesc and ScopeDesc info | |
| 243 methodHandle mh(nm->method()); | |
| 244 | |
| 245 if (!mh->is_native()) { | |
| 246 PcDesc *pcd; | |
| 247 int pcds_in_method; | |
| 248 | |
| 249 pcds_in_method = (nm->scopes_pcs_end() - nm->scopes_pcs_begin()); | |
| 6197 | 250 map = NEW_C_HEAP_ARRAY(jvmtiAddrLocationMap, pcds_in_method, mtInternal); |
| 0 | 251 |
| 252 address scopes_data = nm->scopes_data_begin(); | |
| 253 for( pcd = nm->scopes_pcs_begin(); pcd < nm->scopes_pcs_end(); ++pcd ) { | |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
1972
diff
changeset
|
254 ScopeDesc sc0(nm, pcd->scope_decode_offset(), pcd->should_reexecute(), pcd->rethrow_exception(), pcd->return_oop()); |
| 0 | 255 ScopeDesc *sd = &sc0; |
| 256 while( !sd->is_top() ) { sd = sd->sender(); } | |
| 257 int bci = sd->bci(); | |
| 258 if (bci != InvocationEntryBci) { | |
| 259 assert(map_length < pcds_in_method, "checking"); | |
| 260 map[map_length].start_address = (const void*)pcd->real_pc(nm); | |
| 261 map[map_length].location = bci; | |
| 262 ++map_length; | |
| 263 } | |
| 264 } | |
| 265 } | |
| 266 | |
| 267 *map_ptr = map; | |
| 268 *map_length_ptr = map_length; | |
| 269 } |