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This commit is contained in:
Niclas Adlertz 2014-09-19 17:14:13 +02:00
commit 37c8ef911c
331 changed files with 14826 additions and 8842 deletions
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113
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
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@ -211,7 +211,10 @@ void YoungList::empty_list(HeapRegion* list) {
HeapRegion* next = list->get_next_young_region();
list->set_next_young_region(NULL);
list->uninstall_surv_rate_group();
list->set_not_young();
// This is called before a Full GC and all the non-empty /
// non-humongous regions at the end of the Full GC will end up as
// old anyway.
list->set_old();
list = next;
}
}
@ -370,7 +373,7 @@ void YoungList::print() {
if (curr == NULL)
gclog_or_tty->print_cr(" empty");
while (curr != NULL) {
gclog_or_tty->print_cr(" "HR_FORMAT", P: "PTR_FORMAT "N: "PTR_FORMAT", age: %4d",
gclog_or_tty->print_cr(" "HR_FORMAT", P: "PTR_FORMAT ", N: "PTR_FORMAT", age: %4d",
HR_FORMAT_PARAMS(curr),
curr->prev_top_at_mark_start(),
curr->next_top_at_mark_start(),
@ -802,6 +805,7 @@ HeapWord* G1CollectedHeap::humongous_obj_allocate(size_t word_size) {
#ifdef ASSERT
for (uint i = first; i < first + obj_regions; ++i) {
HeapRegion* hr = region_at(i);
assert(hr->is_free(), "sanity");
assert(hr->is_empty(), "sanity");
assert(is_on_master_free_list(hr), "sanity");
}
@ -1225,21 +1229,21 @@ private:
public:
bool doHeapRegion(HeapRegion* hr) {
assert(!hr->is_young(), "not expecting to find young regions");
// We only generate output for non-empty regions.
if (!hr->is_empty()) {
if (!hr->isHumongous()) {
_hr_printer->post_compaction(hr, G1HRPrinter::Old);
} else if (hr->startsHumongous()) {
if (hr->region_num() == 1) {
// single humongous region
_hr_printer->post_compaction(hr, G1HRPrinter::SingleHumongous);
} else {
_hr_printer->post_compaction(hr, G1HRPrinter::StartsHumongous);
}
if (hr->is_free()) {
// We only generate output for non-empty regions.
} else if (hr->startsHumongous()) {
if (hr->region_num() == 1) {
// single humongous region
_hr_printer->post_compaction(hr, G1HRPrinter::SingleHumongous);
} else {
assert(hr->continuesHumongous(), "only way to get here");
_hr_printer->post_compaction(hr, G1HRPrinter::ContinuesHumongous);
_hr_printer->post_compaction(hr, G1HRPrinter::StartsHumongous);
}
} else if (hr->continuesHumongous()) {
_hr_printer->post_compaction(hr, G1HRPrinter::ContinuesHumongous);
} else if (hr->is_old()) {
_hr_printer->post_compaction(hr, G1HRPrinter::Old);
} else {
ShouldNotReachHere();
}
return false;
}
@ -1477,9 +1481,7 @@ bool G1CollectedHeap::do_collection(bool explicit_gc,
// Discard all rset updates
JavaThread::dirty_card_queue_set().abandon_logs();
assert(!G1DeferredRSUpdate
|| (G1DeferredRSUpdate &&
(dirty_card_queue_set().completed_buffers_num() == 0)), "Should not be any");
assert(dirty_card_queue_set().completed_buffers_num() == 0, "DCQS should be empty");
_young_list->reset_sampled_info();
// At this point there should be no regions in the
@ -2090,15 +2092,13 @@ jint G1CollectedHeap::initialize() {
concurrent_g1_refine()->red_zone(),
Shared_DirtyCardQ_lock);
if (G1DeferredRSUpdate) {
dirty_card_queue_set().initialize(NULL, // Should never be called by the Java code
DirtyCardQ_CBL_mon,
DirtyCardQ_FL_lock,
-1, // never trigger processing
-1, // no limit on length
Shared_DirtyCardQ_lock,
&JavaThread::dirty_card_queue_set());
}
dirty_card_queue_set().initialize(NULL, // Should never be called by the Java code
DirtyCardQ_CBL_mon,
DirtyCardQ_FL_lock,
-1, // never trigger processing
-1, // no limit on length
Shared_DirtyCardQ_lock,
&JavaThread::dirty_card_queue_set());
// Initialize the card queue set used to hold cards containing
// references into the collection set.
@ -2121,8 +2121,8 @@ jint G1CollectedHeap::initialize() {
// We'll re-use the same region whether the alloc region will
// require BOT updates or not and, if it doesn't, then a non-young
// region will complain that it cannot support allocations without
// BOT updates. So we'll tag the dummy region as young to avoid that.
dummy_region->set_young();
// BOT updates. So we'll tag the dummy region as eden to avoid that.
dummy_region->set_eden();
// Make sure it's full.
dummy_region->set_top(dummy_region->end());
G1AllocRegion::setup(this, dummy_region);
@ -4031,14 +4031,6 @@ G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
if (_hr_printer.is_active()) {
HeapRegion* hr = g1_policy()->collection_set();
while (hr != NULL) {
G1HRPrinter::RegionType type;
if (!hr->is_young()) {
type = G1HRPrinter::Old;
} else if (hr->is_survivor()) {
type = G1HRPrinter::Survivor;
} else {
type = G1HRPrinter::Eden;
}
_hr_printer.cset(hr);
hr = hr->next_in_collection_set();
}
@ -5396,7 +5388,6 @@ class G1RedirtyLoggedCardsTask : public AbstractGangTask {
};
void G1CollectedHeap::redirty_logged_cards() {
guarantee(G1DeferredRSUpdate, "Must only be called when using deferred RS updates.");
double redirty_logged_cards_start = os::elapsedTime();
uint n_workers = (G1CollectedHeap::use_parallel_gc_threads() ?
@ -5451,9 +5442,10 @@ public:
void do_oop(narrowOop* p) { guarantee(false, "Not needed"); }
void do_oop(oop* p) {
oop obj = *p;
assert(obj != NULL, "the caller should have filtered out NULL values");
G1CollectedHeap::in_cset_state_t cset_state = _g1->in_cset_state(obj);
if (obj == NULL || cset_state == G1CollectedHeap::InNeither) {
if (cset_state == G1CollectedHeap::InNeither) {
return;
}
if (cset_state == G1CollectedHeap::InCSet) {
@ -6055,9 +6047,7 @@ void G1CollectedHeap::evacuate_collection_set(EvacuationInfo& evacuation_info) {
// RSets.
enqueue_discovered_references(n_workers);
if (G1DeferredRSUpdate) {
redirty_logged_cards();
}
redirty_logged_cards();
COMPILER2_PRESENT(DerivedPointerTable::update_pointers());
}
@ -6065,7 +6055,7 @@ void G1CollectedHeap::free_region(HeapRegion* hr,
FreeRegionList* free_list,
bool par,
bool locked) {
assert(!hr->isHumongous(), "this is only for non-humongous regions");
assert(!hr->is_free(), "the region should not be free");
assert(!hr->is_empty(), "the region should not be empty");
assert(_hrm.is_available(hr->hrm_index()), "region should be committed");
assert(free_list != NULL, "pre-condition");
@ -6095,14 +6085,14 @@ void G1CollectedHeap::free_humongous_region(HeapRegion* hr,
// We need to read this before we make the region non-humongous,
// otherwise the information will be gone.
uint last_index = hr->last_hc_index();
hr->set_notHumongous();
hr->clear_humongous();
free_region(hr, free_list, par);
uint i = hr->hrm_index() + 1;
while (i < last_index) {
HeapRegion* curr_hr = region_at(i);
assert(curr_hr->continuesHumongous(), "invariant");
curr_hr->set_notHumongous();
curr_hr->clear_humongous();
free_region(curr_hr, free_list, par);
i += 1;
}
@ -6410,9 +6400,9 @@ void G1CollectedHeap::free_collection_set(HeapRegion* cs_head, EvacuationInfo& e
if (cur->is_young()) {
cur->set_young_index_in_cset(-1);
}
cur->set_not_young();
cur->set_evacuation_failed(false);
// The region is now considered to be old.
cur->set_old();
_old_set.add(cur);
evacuation_info.increment_collectionset_used_after(cur->used());
}
@ -6699,16 +6689,15 @@ public:
TearDownRegionSetsClosure(HeapRegionSet* old_set) : _old_set(old_set) { }
bool doHeapRegion(HeapRegion* r) {
if (r->is_empty()) {
// We ignore empty regions, we'll empty the free list afterwards
} else if (r->is_young()) {
// We ignore young regions, we'll empty the young list afterwards
} else if (r->isHumongous()) {
// We ignore humongous regions, we're not tearing down the
// humongous region set
} else {
// The rest should be old
if (r->is_old()) {
_old_set->remove(r);
} else {
// We ignore free regions, we'll empty the free list afterwards.
// We ignore young regions, we'll empty the young list afterwards.
// We ignore humongous regions, we're not tearing down the
// humongous regions set.
assert(r->is_free() || r->is_young() || r->isHumongous(),
"it cannot be another type");
}
return false;
}
@ -6758,6 +6747,7 @@ public:
if (r->is_empty()) {
// Add free regions to the free list
r->set_free();
_hrm->insert_into_free_list(r);
} else if (!_free_list_only) {
assert(!r->is_young(), "we should not come across young regions");
@ -6765,7 +6755,11 @@ public:
if (r->isHumongous()) {
// We ignore humongous regions, we left the humongous set unchanged
} else {
// The rest should be old, add them to the old set
// Objects that were compacted would have ended up on regions
// that were previously old or free.
assert(r->is_free() || r->is_old(), "invariant");
// We now consider them old, so register as such.
r->set_old();
_old_set->add(r);
}
_total_used += r->used();
@ -6832,7 +6826,7 @@ HeapRegion* G1CollectedHeap::new_mutator_alloc_region(size_t word_size,
void G1CollectedHeap::retire_mutator_alloc_region(HeapRegion* alloc_region,
size_t allocated_bytes) {
assert_heap_locked_or_at_safepoint(true /* should_be_vm_thread */);
assert(alloc_region->is_young(), "all mutator alloc regions should be young");
assert(alloc_region->is_eden(), "all mutator alloc regions should be eden");
g1_policy()->add_region_to_incremental_cset_lhs(alloc_region);
_summary_bytes_used += allocated_bytes;
@ -6891,6 +6885,7 @@ HeapRegion* G1CollectedHeap::new_gc_alloc_region(size_t word_size,
_hr_printer.alloc(new_alloc_region, G1HRPrinter::Survivor);
check_bitmaps("Survivor Region Allocation", new_alloc_region);
} else {
new_alloc_region->set_old();
_hr_printer.alloc(new_alloc_region, G1HRPrinter::Old);
check_bitmaps("Old Region Allocation", new_alloc_region);
}
@ -7002,9 +6997,11 @@ public:
} else if (hr->is_empty()) {
assert(_hrm->is_free(hr), err_msg("Heap region %u is empty but not on the free list.", hr->hrm_index()));
_free_count.increment(1u, hr->capacity());
} else {
} else if (hr->is_old()) {
assert(hr->containing_set() == _old_set, err_msg("Heap region %u is old but not in the old set.", hr->hrm_index()));
_old_count.increment(1u, hr->capacity());
} else {
ShouldNotReachHere();
}
return false;
}