353 }
354
355 HeapWord* MemAllocator::mem_allocate(Allocation& allocation) const {
356 if (UseTLAB) {
357 HeapWord* result = allocate_inside_tlab(allocation);
358 if (result != NULL) {
359 return result;
360 }
361 }
362
363 return allocate_outside_tlab(allocation);
364 }
365
366 oop MemAllocator::allocate() const {
367 oop obj = NULL;
368 {
369 Allocation allocation(*this, &obj);
370 HeapWord* mem = mem_allocate(allocation);
371 if (mem != NULL) {
372 obj = initialize(mem);
373 }
374 }
375 return obj;
376 }
377
378 void MemAllocator::mem_clear(HeapWord* mem) const {
379 assert(mem != NULL, "cannot initialize NULL object");
380 const size_t hs = oopDesc::header_size();
381 assert(_word_size >= hs, "unexpected object size");
382 oopDesc::set_klass_gap(mem, 0);
383 Copy::fill_to_aligned_words(mem + hs, _word_size - hs);
384 }
385
386 oop MemAllocator::finish(HeapWord* mem) const {
387 assert(mem != NULL, "NULL object pointer");
388 if (UseBiasedLocking) {
389 oopDesc::set_mark_raw(mem, _klass->prototype_header());
390 } else {
391 // May be bootstrapping
392 oopDesc::set_mark_raw(mem, markOopDesc::prototype());
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353 }
354
355 HeapWord* MemAllocator::mem_allocate(Allocation& allocation) const {
356 if (UseTLAB) {
357 HeapWord* result = allocate_inside_tlab(allocation);
358 if (result != NULL) {
359 return result;
360 }
361 }
362
363 return allocate_outside_tlab(allocation);
364 }
365
366 oop MemAllocator::allocate() const {
367 oop obj = NULL;
368 {
369 Allocation allocation(*this, &obj);
370 HeapWord* mem = mem_allocate(allocation);
371 if (mem != NULL) {
372 obj = initialize(mem);
373 } else {
374 // Keep the unhandled oop detector happy.
375 obj = NULL;
376 }
377 }
378 return obj;
379 }
380
381 void MemAllocator::mem_clear(HeapWord* mem) const {
382 assert(mem != NULL, "cannot initialize NULL object");
383 const size_t hs = oopDesc::header_size();
384 assert(_word_size >= hs, "unexpected object size");
385 oopDesc::set_klass_gap(mem, 0);
386 Copy::fill_to_aligned_words(mem + hs, _word_size - hs);
387 }
388
389 oop MemAllocator::finish(HeapWord* mem) const {
390 assert(mem != NULL, "NULL object pointer");
391 if (UseBiasedLocking) {
392 oopDesc::set_mark_raw(mem, _klass->prototype_header());
393 } else {
394 // May be bootstrapping
395 oopDesc::set_mark_raw(mem, markOopDesc::prototype());
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