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8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders

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Reviewed-by: johnc, coleenp
This commit is contained in:
Jon Masamitsu 2012-12-03 15:09:39 -08:00
parent 52a0bed8f5
commit e8b3b89264
8 changed files with 419 additions and 226 deletions
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11
hotspot/src/share/vm/memory/metachunk.cpp
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@ -56,6 +56,7 @@ Metachunk* Metachunk::initialize(MetaWord* ptr, size_t word_size) {
assert(chunk_end > chunk_bottom, "Chunk must be too small");
chunk->set_end(chunk_end);
chunk->set_next(NULL);
chunk->set_prev(NULL);
chunk->set_word_size(word_size);
#ifdef ASSERT
size_t data_word_size = pointer_delta(chunk_end, chunk_bottom, sizeof(MetaWord));
@ -76,15 +77,15 @@ MetaWord* Metachunk::allocate(size_t word_size) {
}
// _bottom points to the start of the chunk including the overhead.
size_t Metachunk::used_word_size() {
size_t Metachunk::used_word_size() const {
return pointer_delta(_top, _bottom, sizeof(MetaWord));
}
size_t Metachunk::free_word_size() {
size_t Metachunk::free_word_size() const {
return pointer_delta(_end, _top, sizeof(MetaWord));
}
size_t Metachunk::capacity_word_size() {
size_t Metachunk::capacity_word_size() const {
return pointer_delta(_end, _bottom, sizeof(MetaWord));
}
@ -93,6 +94,10 @@ void Metachunk::print_on(outputStream* st) const {
" bottom " PTR_FORMAT " top " PTR_FORMAT
" end " PTR_FORMAT " size " SIZE_FORMAT,
bottom(), top(), end(), word_size());
if (Verbose) {
st->print_cr(" used " SIZE_FORMAT " free " SIZE_FORMAT,
used_word_size(), free_word_size());
}
}
#ifndef PRODUCT