Mercurial > hg > graal-jvmci-8
comparison src/share/vm/code/nmethod.cpp @ 1726:71faaa8e3ccc
6974176: ShouldNotReachHere, instanceKlass.cpp:1426
Reviewed-by: kvn, twisti
author | never |
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date | Thu, 12 Aug 2010 16:38:23 -0700 |
parents | d2ede61b7a12 |
children | 3e8fbc61cee8 |
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1693:6c9cc03d8726 | 1726:71faaa8e3ccc |
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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) { |