src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp
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rev 6166 : 8038498: Fix includes and C inlining after 8035330
@@ -27,17 +27,21 @@
#include "gc_implementation/g1/concurrentMark.hpp"
#include "gc_implementation/g1/g1CollectedHeap.hpp"
#include "gc_implementation/g1/g1AllocRegion.inline.hpp"
#include "gc_implementation/g1/g1CollectorPolicy.hpp"
+#include "gc_implementation/g1/g1RemSet.inline.hpp"
#include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
#include "gc_implementation/g1/heapRegionSet.inline.hpp"
#include "gc_implementation/g1/heapRegionSeq.inline.hpp"
#include "utilities/taskqueue.hpp"
// Inline functions for G1CollectedHeap
+// Return the region with the given index. It assumes the index is valid.
+inline HeapRegion* G1CollectedHeap::region_at(uint index) const { return _hrs.at(index); }
+
template <class T>
inline HeapRegion*
G1CollectedHeap::heap_region_containing(const T addr) const {
HeapRegion* hr = _hrs.addr_to_region((HeapWord*) addr);
// hr can be null if addr in perm_gen
@@ -53,10 +57,14 @@
assert(_g1_reserved.contains((const void*) addr), "invariant");
HeapRegion* res = _hrs.addr_to_region_unsafe((HeapWord*) addr);
return res;
}
+inline void G1CollectedHeap::old_set_remove(HeapRegion* hr) {
+ _old_set.remove(hr);
+}
+
inline bool G1CollectedHeap::obj_in_cs(oop obj) {
HeapRegion* r = _hrs.addr_to_region((HeapWord*) obj);
return r != NULL && r->in_collection_set();
}
@@ -149,10 +157,28 @@
inline bool G1CollectedHeap::isMarkedNext(oop obj) const {
return _cm->nextMarkBitMap()->isMarked((HeapWord *)obj);
}
+
+// This is a fast test on whether a reference points into the
+// collection set or not. Assume that the reference
+// points into the heap.
+inline bool G1CollectedHeap::in_cset_fast_test(oop obj) {
+ assert(_in_cset_fast_test != NULL, "sanity");
+ assert(_g1_committed.contains((HeapWord*) obj), err_msg("Given reference outside of heap, is "PTR_FORMAT, (HeapWord*)obj));
+ // no need to subtract the bottom of the heap from obj,
+ // _in_cset_fast_test is biased
+ uintx index = cast_from_oop<uintx>(obj) >> HeapRegion::LogOfHRGrainBytes;
+ bool ret = _in_cset_fast_test[index];
+ // let's make sure the result is consistent with what the slower
+ // test returns
+ assert( ret || !obj_in_cs(obj), "sanity");
+ assert(!ret || obj_in_cs(obj), "sanity");
+ return ret;
+}
+
#ifndef PRODUCT
// Support for G1EvacuationFailureALot
inline bool
G1CollectedHeap::evacuation_failure_alot_for_gc_type(bool gcs_are_young,
@@ -222,6 +248,123 @@
_evacuation_failure_alot_for_current_gc = false;
}
}
#endif // #ifndef PRODUCT
+inline bool G1CollectedHeap::is_in_young(const oop obj) {
+ HeapRegion* hr = heap_region_containing(obj);
+ return hr != NULL && hr->is_young();
+}
+
+// We don't need barriers for initializing stores to objects
+// in the young gen: for the SATB pre-barrier, there is no
+// pre-value that needs to be remembered; for the remembered-set
+// update logging post-barrier, we don't maintain remembered set
+// information for young gen objects.
+inline bool G1CollectedHeap::can_elide_initializing_store_barrier(oop new_obj) {
+ return is_in_young(new_obj);
+}
+
+inline bool G1CollectedHeap::is_obj_dead(const oop obj) const {
+ const HeapRegion* hr = heap_region_containing(obj);
+ if (hr == NULL) {
+ if (obj == NULL) return false;
+ else return true;
+ }
+ else return is_obj_dead(obj, hr);
+}
+
+inline bool G1CollectedHeap::is_obj_ill(const oop obj) const {
+ const HeapRegion* hr = heap_region_containing(obj);
+ if (hr == NULL) {
+ if (obj == NULL) return false;
+ else return true;
+ }
+ else return is_obj_ill(obj, hr);
+}
+
+template <class T> inline void G1ParScanThreadState::immediate_rs_update(HeapRegion* from, T* p, int tid) {
+ if (!from->is_survivor()) {
+ _g1_rem->par_write_ref(from, p, tid);
+ }
+}
+
+template <class T> void G1ParScanThreadState::update_rs(HeapRegion* from, T* p, int tid) {
+ if (G1DeferredRSUpdate) {
+ deferred_rs_update(from, p, tid);
+ } else {
+ immediate_rs_update(from, p, tid);
+ }
+}
+
+
+inline void G1ParScanThreadState::do_oop_partial_array(oop* p) {
+ assert(has_partial_array_mask(p), "invariant");
+ oop from_obj = clear_partial_array_mask(p);
+
+ assert(Universe::heap()->is_in_reserved(from_obj), "must be in heap.");
+ assert(from_obj->is_objArray(), "must be obj array");
+ objArrayOop from_obj_array = objArrayOop(from_obj);
+ // The from-space object contains the real length.
+ int length = from_obj_array->length();
+
+ assert(from_obj->is_forwarded(), "must be forwarded");
+ oop to_obj = from_obj->forwardee();
+ assert(from_obj != to_obj, "should not be chunking self-forwarded objects");
+ objArrayOop to_obj_array = objArrayOop(to_obj);
+ // We keep track of the next start index in the length field of the
+ // to-space object.
+ int next_index = to_obj_array->length();
+ assert(0 <= next_index && next_index < length,
+ err_msg("invariant, next index: %d, length: %d", next_index, length));
+
+ int start = next_index;
+ int end = length;
+ int remainder = end - start;
+ // We'll try not to push a range that's smaller than ParGCArrayScanChunk.
+ if (remainder > 2 * ParGCArrayScanChunk) {
+ end = start + ParGCArrayScanChunk;
+ to_obj_array->set_length(end);
+ // Push the remainder before we process the range in case another
+ // worker has run out of things to do and can steal it.
+ oop* from_obj_p = set_partial_array_mask(from_obj);
+ push_on_queue(from_obj_p);
+ } else {
+ assert(length == end, "sanity");
+ // We'll process the final range for this object. Restore the length
+ // so that the heap remains parsable in case of evacuation failure.
+ to_obj_array->set_length(end);
+ }
+ _scanner.set_region(_g1h->heap_region_containing_raw(to_obj));
+ // Process indexes [start,end). It will also process the header
+ // along with the first chunk (i.e., the chunk with start == 0).
+ // Note that at this point the length field of to_obj_array is not
+ // correct given that we are using it to keep track of the next
+ // start index. oop_iterate_range() (thankfully!) ignores the length
+ // field and only relies on the start / end parameters. It does
+ // however return the size of the object which will be incorrect. So
+ // we have to ignore it even if we wanted to use it.
+ to_obj_array->oop_iterate_range(&_scanner, start, end);
+}
+
+template <class T> inline void G1ParScanThreadState::deal_with_reference(T* ref_to_scan) {
+ if (!has_partial_array_mask(ref_to_scan)) {
+ // Note: we can use "raw" versions of "region_containing" because
+ // "obj_to_scan" is definitely in the heap, and is not in a
+ // humongous region.
+ HeapRegion* r = _g1h->heap_region_containing_raw(ref_to_scan);
+ do_oop_evac(ref_to_scan, r);
+ } else {
+ do_oop_partial_array((oop*)ref_to_scan);
+ }
+}
+
+inline void G1ParScanThreadState::deal_with_reference(StarTask ref) {
+ assert(verify_task(ref), "sanity");
+ if (ref.is_narrow()) {
+ deal_with_reference((narrowOop*)ref);
+ } else {
+ deal_with_reference((oop*)ref);
+ }
+}
+
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP