Mercurial > hg > graal-jvmci-8
diff src/share/vm/gc_implementation/g1/bufferingOopClosure.hpp @ 845:df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
Summary: Modifications to G1 so as to allow the use of compressed oops.
Reviewed-by: apetrusenko, coleenp, jmasa, kvn, never, phh, tonyp
author | ysr |
---|---|
date | Tue, 14 Jul 2009 15:40:39 -0700 |
parents | 37f87013dfd8 |
children | c18cbe5936b8 |
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--- a/src/share/vm/gc_implementation/g1/bufferingOopClosure.hpp Fri Jul 10 16:01:20 2009 -0700 +++ b/src/share/vm/gc_implementation/g1/bufferingOopClosure.hpp Tue Jul 14 15:40:39 2009 -0700 @@ -42,35 +42,40 @@ BufferLength = 1024 }; - oop *_buffer[BufferLength]; - oop **_buffer_top; - oop **_buffer_curr; + StarTask _buffer[BufferLength]; + StarTask* _buffer_top; + StarTask* _buffer_curr; - OopClosure *_oc; - double _closure_app_seconds; + OopClosure* _oc; + double _closure_app_seconds; void process_buffer () { - double start = os::elapsedTime(); - for (oop **curr = _buffer; curr < _buffer_curr; ++curr) { - _oc->do_oop(*curr); + for (StarTask* curr = _buffer; curr < _buffer_curr; ++curr) { + if (curr->is_narrow()) { + assert(UseCompressedOops, "Error"); + _oc->do_oop((narrowOop*)(*curr)); + } else { + _oc->do_oop((oop*)(*curr)); + } } _buffer_curr = _buffer; _closure_app_seconds += (os::elapsedTime() - start); } -public: - virtual void do_oop(narrowOop* p) { - guarantee(false, "NYI"); - } - virtual void do_oop(oop *p) { + template <class T> inline void do_oop_work(T* p) { if (_buffer_curr == _buffer_top) { process_buffer(); } - - *_buffer_curr = p; + StarTask new_ref(p); + *_buffer_curr = new_ref; ++_buffer_curr; } + +public: + virtual void do_oop(narrowOop* p) { do_oop_work(p); } + virtual void do_oop(oop* p) { do_oop_work(p); } + void done () { if (_buffer_curr > _buffer) { process_buffer(); @@ -88,18 +93,17 @@ class BufferingOopsInGenClosure: public OopsInGenClosure { BufferingOopClosure _boc; OopsInGenClosure* _oc; -public: + protected: + template <class T> inline void do_oop_work(T* p) { + assert(generation()->is_in_reserved((void*)p), "Must be in!"); + _boc.do_oop(p); + } + public: BufferingOopsInGenClosure(OopsInGenClosure *oc) : _boc(oc), _oc(oc) {} - virtual void do_oop(narrowOop* p) { - guarantee(false, "NYI"); - } - - virtual void do_oop(oop* p) { - assert(generation()->is_in_reserved(p), "Must be in!"); - _boc.do_oop(p); - } + virtual void do_oop(narrowOop* p) { do_oop_work(p); } + virtual void do_oop(oop* p) { do_oop_work(p); } void done() { _boc.done(); @@ -130,14 +134,14 @@ BufferLength = 1024 }; - oop *_buffer[BufferLength]; - oop **_buffer_top; - oop **_buffer_curr; + StarTask _buffer[BufferLength]; + StarTask* _buffer_top; + StarTask* _buffer_curr; - HeapRegion *_hr_buffer[BufferLength]; - HeapRegion **_hr_curr; + HeapRegion* _hr_buffer[BufferLength]; + HeapRegion** _hr_curr; - OopsInHeapRegionClosure *_oc; + OopsInHeapRegionClosure* _oc; double _closure_app_seconds; void process_buffer () { @@ -146,15 +150,20 @@ "the two lengths should be the same"); double start = os::elapsedTime(); - HeapRegion **hr_curr = _hr_buffer; - HeapRegion *hr_prev = NULL; - for (oop **curr = _buffer; curr < _buffer_curr; ++curr) { - HeapRegion *region = *hr_curr; + HeapRegion** hr_curr = _hr_buffer; + HeapRegion* hr_prev = NULL; + for (StarTask* curr = _buffer; curr < _buffer_curr; ++curr) { + HeapRegion* region = *hr_curr; if (region != hr_prev) { _oc->set_region(region); hr_prev = region; } - _oc->do_oop(*curr); + if (curr->is_narrow()) { + assert(UseCompressedOops, "Error"); + _oc->do_oop((narrowOop*)(*curr)); + } else { + _oc->do_oop((oop*)(*curr)); + } ++hr_curr; } _buffer_curr = _buffer; @@ -163,17 +172,16 @@ } public: - virtual void do_oop(narrowOop *p) { - guarantee(false, "NYI"); - } + virtual void do_oop(narrowOop* p) { do_oop_work(p); } + virtual void do_oop( oop* p) { do_oop_work(p); } - virtual void do_oop(oop *p) { + template <class T> void do_oop_work(T* p) { if (_buffer_curr == _buffer_top) { assert(_hr_curr > _hr_buffer, "_hr_curr should be consistent with _buffer_curr"); process_buffer(); } - - *_buffer_curr = p; + StarTask new_ref(p); + *_buffer_curr = new_ref; ++_buffer_curr; *_hr_curr = _from; ++_hr_curr;