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8026853: Prepare GC code for collector policy regression fix

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Cleanup related to the NewSize and MaxNewSize bugs

Reviewed-by: tschatzl, jcoomes, ehelin
This commit is contained in:
Jesper Wilhelmsson 2013-10-21 18:56:20 +02:00
parent 5976b6915a
commit 9705a6e3f9
12 changed files with 39 additions and 55 deletions
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17
hotspot/src/share/vm/memory/collectorPolicy.hpp
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@ -79,6 +79,7 @@ class CollectorPolicy : public CHeapObj<mtGC> {
// Set to true when policy wants soft refs cleared.
// Reset to false by gc after it clears all soft refs.
bool _should_clear_all_soft_refs;
// Set to true by the GC if the just-completed gc cleared all
// softrefs. This is set to true whenever a gc clears all softrefs, and
// set to false each time gc returns to the mutator. For example, in the
@ -101,8 +102,8 @@ class CollectorPolicy : public CHeapObj<mtGC> {
// Return maximum heap alignment that may be imposed by the policy
static size_t compute_max_alignment();
size_t min_alignment() { return _min_alignment; }
size_t max_alignment() { return _max_alignment; }
size_t min_alignment() { return _min_alignment; }
size_t max_alignment() { return _max_alignment; }
size_t initial_heap_byte_size() { return _initial_heap_byte_size; }
size_t max_heap_byte_size() { return _max_heap_byte_size; }
@ -248,7 +249,7 @@ class GenCollectorPolicy : public CollectorPolicy {
virtual int number_of_generations() = 0;
virtual GenerationSpec **generations() {
virtual GenerationSpec **generations() {
assert(_generations != NULL, "Sanity check");
return _generations;
}
@ -273,6 +274,12 @@ class GenCollectorPolicy : public CollectorPolicy {
virtual void initialize_size_policy(size_t init_eden_size,
size_t init_promo_size,
size_t init_survivor_size);
// The alignment used for eden and survivors within the young gen
// and for boundary between young gen and old gen.
static size_t intra_heap_alignment() {
return 64 * K * HeapWordSize;
}
};
// All of hotspot's current collectors are subtypes of this
@ -300,8 +307,8 @@ class TwoGenerationCollectorPolicy : public GenCollectorPolicy {
// Inherited methods
TwoGenerationCollectorPolicy* as_two_generation_policy() { return this; }
int number_of_generations() { return 2; }
BarrierSet::Name barrier_set_name() { return BarrierSet::CardTableModRef; }
int number_of_generations() { return 2; }
BarrierSet::Name barrier_set_name() { return BarrierSet::CardTableModRef; }
virtual CollectorPolicy::Name kind() {
return CollectorPolicy::TwoGenerationCollectorPolicyKind;