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comparison src/share/vm/prims/jvmtiExport.cpp @ 342:37f87013dfd8

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6711316: Open source the Garbage-First garbage collector Summary: First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author ysr
date Thu, 05 Jun 2008 15:57:56 -0700
parents a61af66fc99e
children ea20d7ce26b0 2b4230d1e589
comparison
equal deleted inserted replaced
189:0b27f3512f9e 342:37f87013dfd8
2431 // if "full" is false it probably means this is a scavenge of the young 2431 // if "full" is false it probably means this is a scavenge of the young
2432 // generation. However it could turn out that a "full" GC is required 2432 // generation. However it could turn out that a "full" GC is required
2433 // so we record the number of collections so that it can be checked in 2433 // so we record the number of collections so that it can be checked in
2434 // the destructor. 2434 // the destructor.
2435 if (!_full) { 2435 if (!_full) {
2436 if (Universe::heap()->kind() == CollectedHeap::GenCollectedHeap) { 2436 _invocation_count = Universe::heap()->total_full_collections();
2437 GenCollectedHeap* gch = GenCollectedHeap::heap();
2438 assert(gch->n_gens() == 2, "configuration not recognized");
2439 _invocation_count = (unsigned int)gch->get_gen(1)->stat_record()->invocations;
2440 } else {
2441 #ifndef SERIALGC
2442 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "checking");
2443 _invocation_count = PSMarkSweep::total_invocations();
2444 #else // SERIALGC
2445 fatal("SerialGC only supported in this configuration.");
2446 #endif // SERIALGC
2447 }
2448 } 2437 }
2449 2438
2450 // Do clean up tasks that need to be done at a safepoint 2439 // Do clean up tasks that need to be done at a safepoint
2451 JvmtiEnvBase::check_for_periodic_clean_up(); 2440 JvmtiEnvBase::check_for_periodic_clean_up();
2452 } 2441 }
2464 2453
2465 // we might have initially started out doing a scavenge of the young 2454 // we might have initially started out doing a scavenge of the young
2466 // generation but could have ended up doing a "full" GC - check the 2455 // generation but could have ended up doing a "full" GC - check the
2467 // GC count to see. 2456 // GC count to see.
2468 if (!_full) { 2457 if (!_full) {
2469 if (Universe::heap()->kind() == CollectedHeap::GenCollectedHeap) { 2458 _full = (_invocation_count != Universe::heap()->total_full_collections());
2470 GenCollectedHeap* gch = GenCollectedHeap::heap();
2471 if (_invocation_count != (unsigned int)gch->get_gen(1)->stat_record()->invocations) {
2472 _full = true;
2473 }
2474 } else {
2475 #ifndef SERIALGC
2476 if (_invocation_count != PSMarkSweep::total_invocations()) {
2477 _full = true;
2478 }
2479 #else // SERIALGC
2480 fatal("SerialGC only supported in this configuration.");
2481 #endif // SERIALGC
2482 }
2483 } 2459 }
2484 2460
2485 // Full collection probably means the perm generation has been GC'ed 2461 // Full collection probably means the perm generation has been GC'ed
2486 // so we clear the breakpoint cache. 2462 // so we clear the breakpoint cache.
2487 if (_full) { 2463 if (_full) {