archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-17 17:44:40 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8205683: Refactor heap allocation to separate concerns

Browse source 
Reviewed-by: pliden, kbarrett
This commit is contained in:
Erik Österlund 2018-06-28 14:22:28 +02:00
parent 7f3a801cae
commit e4dbe9909f
22 changed files with 638 additions and 528 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/hotspot/share/gc/shared/threadLocalAllocBuffer.cpp
View file

@ -185,10 +185,6 @@ void ThreadLocalAllocBuffer::fill(HeapWord* start,
initialize(start, top, start + new_size - alignment_reserve());
if (ThreadHeapSampler::enabled()) {
set_sample_end();
}
// Reset amount of internal fragmentation
set_refill_waste_limit(initial_refill_waste_limit());
}
@ -325,14 +321,14 @@ void ThreadLocalAllocBuffer::verify() {
void ThreadLocalAllocBuffer::set_sample_end() {
size_t heap_words_remaining = pointer_delta(_end, _top);
size_t bytes_until_sample = myThread()->heap_sampler().bytes_until_sample();
size_t words_until_sample = bytes_until_sample / HeapWordSize;;
size_t words_until_sample = bytes_until_sample / HeapWordSize;
if (heap_words_remaining > words_until_sample) {
HeapWord* new_end = _top + words_until_sample;
set_end(new_end);
_bytes_since_last_sample_point = bytes_until_sample;
} else {
_bytes_since_last_sample_point = heap_words_remaining * HeapWordSize;;
_bytes_since_last_sample_point = heap_words_remaining * HeapWordSize;
}
}
@ -346,18 +342,6 @@ void ThreadLocalAllocBuffer::set_back_allocation_end() {
_end = _allocation_end;
}
HeapWord* ThreadLocalAllocBuffer::allocate_sampled_object(size_t size) {
set_back_allocation_end();
HeapWord* result = allocate(size);
if (result) {
myThread()->heap_sampler().check_for_sampling(result, size * HeapWordSize, _bytes_since_last_sample_point);
set_sample_end();
}
return result;
}
HeapWord* ThreadLocalAllocBuffer::hard_end() {
return _allocation_end + alignment_reserve();
}