373 _space_counters->update_all();
374 _gen_counters->update_all();
375 }
376 }
377
378 bool TenuredGeneration::promotion_attempt_is_safe(size_t max_promotion_in_bytes) const {
379 size_t available = _the_space->free() + _virtual_space.uncommitted_size();
380
381 size_t avg_promoted = (size_t)_avg_promoted->padded_average();
382 size_t promotion_estimate = MIN2(avg_promoted, max_promotion_in_bytes);
383
384 bool res = (promotion_estimate <= available);
385
386 log_trace(gc)("Tenured: promo attempt is%s safe: available(%zu) %s av_promo(%zu), max_promo(%zu)",
387 res? "":" not", available, res? ">=":"<", avg_promoted, max_promotion_in_bytes);
388
389 return res;
390 }
391
392 oop TenuredGeneration::allocate_for_promotion(oop obj, size_t obj_size) {
393 assert(obj_size == obj->size(), "bad obj_size passed in");
394
395 #ifndef PRODUCT
396 if (SerialHeap::heap()->promotion_should_fail()) {
397 return nullptr;
398 }
399 #endif // #ifndef PRODUCT
400
401 // Allocate new object.
402 HeapWord* result = allocate(obj_size);
403 if (result == nullptr) {
404 // Promotion of obj into gen failed. Try to expand and allocate.
405 result = expand_and_allocate(obj_size);
406 }
407
408 return cast_to_oop<HeapWord*>(result);
409 }
410
411 HeapWord*
412 TenuredGeneration::expand_and_allocate(size_t word_size) {
413 expand(word_size*HeapWordSize, _min_heap_delta_bytes);
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373 _space_counters->update_all();
374 _gen_counters->update_all();
375 }
376 }
377
378 bool TenuredGeneration::promotion_attempt_is_safe(size_t max_promotion_in_bytes) const {
379 size_t available = _the_space->free() + _virtual_space.uncommitted_size();
380
381 size_t avg_promoted = (size_t)_avg_promoted->padded_average();
382 size_t promotion_estimate = MIN2(avg_promoted, max_promotion_in_bytes);
383
384 bool res = (promotion_estimate <= available);
385
386 log_trace(gc)("Tenured: promo attempt is%s safe: available(%zu) %s av_promo(%zu), max_promo(%zu)",
387 res? "":" not", available, res? ">=":"<", avg_promoted, max_promotion_in_bytes);
388
389 return res;
390 }
391
392 oop TenuredGeneration::allocate_for_promotion(oop obj, size_t obj_size) {
393 assert(obj_size == obj->size() || UseCompactObjectHeaders, "bad obj_size passed in");
394
395 #ifndef PRODUCT
396 if (SerialHeap::heap()->promotion_should_fail()) {
397 return nullptr;
398 }
399 #endif // #ifndef PRODUCT
400
401 // Allocate new object.
402 HeapWord* result = allocate(obj_size);
403 if (result == nullptr) {
404 // Promotion of obj into gen failed. Try to expand and allocate.
405 result = expand_and_allocate(obj_size);
406 }
407
408 return cast_to_oop<HeapWord*>(result);
409 }
410
411 HeapWord*
412 TenuredGeneration::expand_and_allocate(size_t word_size) {
413 expand(word_size*HeapWordSize, _min_heap_delta_bytes);
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