Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/code/nmethod.cpp
src/share/vm/code/nmethod.cpp
- changeset 2081
- 71faaa8e3ccc
- parent 2047
- d2ede61b7a12
- child 2103
- 3e8fbc61cee8
equal
deleted
inserted
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| 2048:6c9cc03d8726 | 2081:71faaa8e3ccc |
|---|---|
| 431 _lock_count = 0; | 431 _lock_count = 0; |
| 432 _stack_traversal_mark = 0; | 432 _stack_traversal_mark = 0; |
| 433 _unload_reported = false; // jvmti state | 433 _unload_reported = false; // jvmti state |
| 434 | 434 |
| 435 NOT_PRODUCT(_has_debug_info = false); | 435 NOT_PRODUCT(_has_debug_info = false); |
| 436 #ifdef ASSERT | |
| 437 _oops_are_stale = false; | |
| 438 #endif | |
| 439 | |
| 436 _oops_do_mark_link = NULL; | 440 _oops_do_mark_link = NULL; |
| 437 _jmethod_id = NULL; | 441 _jmethod_id = NULL; |
| 438 _osr_link = NULL; | 442 _osr_link = NULL; |
| 439 _scavenge_root_link = NULL; | 443 _scavenge_root_link = NULL; |
| 440 _scavenge_root_state = 0; | 444 _scavenge_root_state = 0; |
| 1228 | 1232 |
| 1229 // Common functionality for both make_not_entrant and make_zombie | 1233 // Common functionality for both make_not_entrant and make_zombie |
| 1230 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { | 1234 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
| 1231 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); | 1235 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
| 1232 | 1236 |
| 1233 bool was_alive = false; | |
| 1234 | |
| 1235 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. | 1237 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
| 1236 nmethodLocker nml(this); | 1238 nmethodLocker nml(this); |
| 1237 methodHandle the_method(method()); | 1239 methodHandle the_method(method()); |
| 1240 No_Safepoint_Verifier nsv; | |
| 1238 | 1241 |
| 1239 { | 1242 { |
| 1240 // If the method is already zombie there is nothing to do | 1243 // If the method is already zombie there is nothing to do |
| 1241 if (is_zombie()) { | 1244 if (is_zombie()) { |
| 1242 return false; | 1245 return false; |
| 1301 // When the nmethod becomes zombie it is no longer alive so the | 1304 // When the nmethod becomes zombie it is no longer alive so the |
| 1302 // dependencies must be flushed. nmethods in the not_entrant | 1305 // dependencies must be flushed. nmethods in the not_entrant |
| 1303 // state will be flushed later when the transition to zombie | 1306 // state will be flushed later when the transition to zombie |
| 1304 // happens or they get unloaded. | 1307 // happens or they get unloaded. |
| 1305 if (state == zombie) { | 1308 if (state == zombie) { |
| 1306 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload event | 1309 { |
| 1307 // and it hasn't already been reported for this nmethod then report it now. | 1310 // Flushing dependecies must be done before any possible |
| 1308 // (the event may have been reported earilier if the GC marked it for unloading). | 1311 // safepoint can sneak in, otherwise the oops used by the |
| 1309 post_compiled_method_unload(); | 1312 // dependency logic could have become stale. |
| 1310 | 1313 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| 1311 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | 1314 flush_dependencies(NULL); |
| 1312 flush_dependencies(NULL); | 1315 } |
| 1316 | |
| 1317 { | |
| 1318 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload event | |
| 1319 // and it hasn't already been reported for this nmethod then report it now. | |
| 1320 // (the event may have been reported earilier if the GC marked it for unloading). | |
| 1321 Pause_No_Safepoint_Verifier pnsv(&nsv); | |
| 1322 post_compiled_method_unload(); | |
| 1323 } | |
| 1324 | |
| 1325 #ifdef ASSERT | |
| 1326 // It's no longer safe to access the oops section since zombie | |
| 1327 // nmethods aren't scanned for GC. | |
| 1328 _oops_are_stale = true; | |
| 1329 #endif | |
| 1313 } else { | 1330 } else { |
| 1314 assert(state == not_entrant, "other cases may need to be handled differently"); | 1331 assert(state == not_entrant, "other cases may need to be handled differently"); |
| 1315 } | 1332 } |
| 1316 | 1333 |
| 1317 if (TraceCreateZombies) { | 1334 if (TraceCreateZombies) { |
