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comparison src/share/vm/memory/threadLocalAllocBuffer.cpp @ 18697:ee26b8eb1601

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Check for overzeroing in the TLAB
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Tue, 16 Dec 2014 13:28:33 -0800
parents 52b4284cb496
children 8f2fb6bec986
comparison
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18696:b2859128b76a 18697:ee26b8eb1601
40 unsigned ThreadLocalAllocBuffer::_target_refills = 0; 40 unsigned ThreadLocalAllocBuffer::_target_refills = 0;
41 GlobalTLABStats* ThreadLocalAllocBuffer::_global_stats = NULL; 41 GlobalTLABStats* ThreadLocalAllocBuffer::_global_stats = NULL;
42 42
43 void ThreadLocalAllocBuffer::clear_before_allocation() { 43 void ThreadLocalAllocBuffer::clear_before_allocation() {
44 _slow_refill_waste += (unsigned)remaining(); 44 _slow_refill_waste += (unsigned)remaining();
45 // In debug mode we expect the storage above top to be uninitialized
46 // or filled with a padding object.
47 assert(top() == NULL || *(intptr_t*)top() != 0, "overzeroing detected");
45 make_parsable(true); // also retire the TLAB 48 make_parsable(true); // also retire the TLAB
46 } 49 }
47 50
48 void ThreadLocalAllocBuffer::accumulate_statistics_before_gc() { 51 void ThreadLocalAllocBuffer::accumulate_statistics_before_gc() {
49 global_stats()->initialize(); 52 global_stats()->initialize();