Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp @ 8883:b9a918201d47
Merge with hsx25
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Sat, 06 Apr 2013 20:04:06 +0200 |
parents | c3657d00e343 24ef5fb05e0f |
children | 89e4d67fdd2a |
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--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Fri Apr 05 18:53:57 2013 +0200 +++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Sat Apr 06 20:04:06 2013 +0200 @@ -854,7 +854,8 @@ assert(!isHumongous(word_size), "we do not allow humongous TLABs"); unsigned int dummy_gc_count_before; - return attempt_allocation(word_size, &dummy_gc_count_before); + int dummy_gclocker_retry_count = 0; + return attempt_allocation(word_size, &dummy_gc_count_before, &dummy_gclocker_retry_count); } HeapWord* @@ -863,14 +864,14 @@ assert_heap_not_locked_and_not_at_safepoint(); // Loop until the allocation is satisified, or unsatisfied after GC. - for (int try_count = 1; /* we'll return */; try_count += 1) { + for (int try_count = 1, gclocker_retry_count = 0; /* we'll return */; try_count += 1) { unsigned int gc_count_before; HeapWord* result = NULL; if (!isHumongous(word_size)) { - result = attempt_allocation(word_size, &gc_count_before); + result = attempt_allocation(word_size, &gc_count_before, &gclocker_retry_count); } else { - result = attempt_allocation_humongous(word_size, &gc_count_before); + result = attempt_allocation_humongous(word_size, &gc_count_before, &gclocker_retry_count); } if (result != NULL) { return result; @@ -894,6 +895,9 @@ } return result; } else { + if (gclocker_retry_count > GCLockerRetryAllocationCount) { + return NULL; + } assert(op.result() == NULL, "the result should be NULL if the VM op did not succeed"); } @@ -910,7 +914,8 @@ } HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size, - unsigned int *gc_count_before_ret) { + unsigned int *gc_count_before_ret, + int* gclocker_retry_count_ret) { // Make sure you read the note in attempt_allocation_humongous(). assert_heap_not_locked_and_not_at_safepoint(); @@ -986,10 +991,16 @@ return NULL; } } else { + if (*gclocker_retry_count_ret > GCLockerRetryAllocationCount) { + MutexLockerEx x(Heap_lock); + *gc_count_before_ret = total_collections(); + return NULL; + } // The GCLocker is either active or the GCLocker initiated // GC has not yet been performed. Stall until it is and // then retry the allocation. GC_locker::stall_until_clear(); + (*gclocker_retry_count_ret) += 1; } // We can reach here if we were unsuccessul in scheduling a @@ -1019,7 +1030,8 @@ } HeapWord* G1CollectedHeap::attempt_allocation_humongous(size_t word_size, - unsigned int * gc_count_before_ret) { + unsigned int * gc_count_before_ret, + int* gclocker_retry_count_ret) { // The structure of this method has a lot of similarities to // attempt_allocation_slow(). The reason these two were not merged // into a single one is that such a method would require several "if @@ -1104,10 +1116,16 @@ return NULL; } } else { + if (*gclocker_retry_count_ret > GCLockerRetryAllocationCount) { + MutexLockerEx x(Heap_lock); + *gc_count_before_ret = total_collections(); + return NULL; + } // The GCLocker is either active or the GCLocker initiated // GC has not yet been performed. Stall until it is and // then retry the allocation. GC_locker::stall_until_clear(); + (*gclocker_retry_count_ret) += 1; } // We can reach here if we were unsuccessul in scheduling a @@ -3280,12 +3298,12 @@ void G1CollectedHeap::verify(bool silent, VerifyOption vo) { - if (SafepointSynchronize::is_at_safepoint() || ! UseTLAB) { + if (SafepointSynchronize::is_at_safepoint()) { if (!silent) { gclog_or_tty->print("Roots "); } VerifyRootsClosure rootsCl(vo); assert(Thread::current()->is_VM_thread(), - "Expected to be executed serially by the VM thread at this point"); + "Expected to be executed serially by the VM thread at this point"); CodeBlobToOopClosure blobsCl(&rootsCl, /*do_marking=*/ false); VerifyKlassClosure klassCl(this, &rootsCl); @@ -3370,7 +3388,8 @@ } guarantee(!failures, "there should not have been any failures"); } else { - if (!silent) gclog_or_tty->print("(SKIPPING roots, heapRegions, remset) "); + if (!silent) + gclog_or_tty->print("(SKIPPING roots, heapRegionSets, heapRegions, remset) "); } }