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comparison src/share/vm/gc_implementation/g1/heapRegion.hpp @ 2134:b158bed62ef5

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6994297: G1: do first-level slow-path allocations with a CAS Summary: First attempt to allocate out the current alloc region using a CAS instead of taking the Heap_lock (first level of G1's slow allocation path). Only if that fails and it's necessary to replace the current alloc region take the Heap_lock (that's the second level of G1's slow allocation path). Reviewed-by: johnc, brutisso, ysr
author tonyp
date Wed, 12 Jan 2011 16:34:25 -0500
parents 2250ee17e258
children 0fa27f37d4d4
comparison
equal deleted inserted replaced
2133:2250ee17e258 2134:b158bed62ef5
369 NotZeroFilled, 369 NotZeroFilled,
370 ZeroFilling, 370 ZeroFilling,
371 ZeroFilled, 371 ZeroFilled,
372 Allocated 372 Allocated
373 }; 373 };
374
375 inline HeapWord* par_allocate_no_bot_updates(size_t word_size) {
376 assert(is_young(), "we can only skip BOT updates on young regions");
377 return ContiguousSpace::par_allocate(word_size);
378 }
379 inline HeapWord* allocate_no_bot_updates(size_t word_size) {
380 assert(is_young(), "we can only skip BOT updates on young regions");
381 return ContiguousSpace::allocate(word_size);
382 }
374 383
375 // If this region is a member of a HeapRegionSeq, the index in that 384 // If this region is a member of a HeapRegionSeq, the index in that
376 // sequence, otherwise -1. 385 // sequence, otherwise -1.
377 int hrs_index() const { return _hrs_index; } 386 int hrs_index() const { return _hrs_index; }
378 void set_hrs_index(int index) { _hrs_index = index; } 387 void set_hrs_index(int index) { _hrs_index = index; }