Mercurial > hg > truffle
changeset 11980:69d0dbb53c78
Merge
| author | tamao |
|---|---|
| date | Thu, 01 Aug 2013 17:17:52 -0700 |
| parents | da839a3c5735 (current diff) 8d4ff57af591 (diff) |
| children | 530fe88b3b2c |
| files | |
| diffstat | 13 files changed, 394 insertions(+), 66 deletions(-) [+] |
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp Thu Aug 01 17:17:52 2013 -0700 @@ -122,6 +122,22 @@ } }; +class Par_MarkRefsIntoClosure: public CMSOopsInGenClosure { + private: + const MemRegion _span; + CMSBitMap* _bitMap; + protected: + DO_OOP_WORK_DEFN + public: + Par_MarkRefsIntoClosure(MemRegion span, CMSBitMap* bitMap); + virtual void do_oop(oop* p); + virtual void do_oop(narrowOop* p); + + Prefetch::style prefetch_style() { + return Prefetch::do_read; + } +}; + // A variant of the above used in certain kinds of CMS // marking verification. class MarkRefsIntoVerifyClosure: public CMSOopsInGenClosure {
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp Thu Aug 01 17:17:52 2013 -0700 @@ -569,6 +569,7 @@ _restart_addr(NULL), _overflow_list(NULL), _stats(cmsGen), + _eden_chunk_lock(new Mutex(Mutex::leaf + 1, "CMS_eden_chunk_lock", true)), _eden_chunk_array(NULL), // may be set in ctor body _eden_chunk_capacity(0), // -- ditto -- _eden_chunk_index(0), // -- ditto -- @@ -732,7 +733,7 @@ assert(_eden_chunk_array != NULL || _eden_chunk_capacity == 0, "Error"); // Support for parallelizing survivor space rescan - if (CMSParallelRemarkEnabled && CMSParallelSurvivorRemarkEnabled) { + if ((CMSParallelRemarkEnabled && CMSParallelSurvivorRemarkEnabled) || CMSParallelInitialMarkEnabled) { const size_t max_plab_samples = ((DefNewGeneration*)_young_gen)->max_survivor_size()/MinTLABSize; @@ -2137,6 +2138,39 @@ } +void CMSCollector::print_eden_and_survivor_chunk_arrays() { + DefNewGeneration* dng = _young_gen->as_DefNewGeneration(); + EdenSpace* eden_space = dng->eden(); + ContiguousSpace* from_space = dng->from(); + ContiguousSpace* to_space = dng->to(); + // Eden + if (_eden_chunk_array != NULL) { + gclog_or_tty->print_cr("eden " PTR_FORMAT "-" PTR_FORMAT "-" PTR_FORMAT "(" SIZE_FORMAT ")", + eden_space->bottom(), eden_space->top(), + eden_space->end(), eden_space->capacity()); + gclog_or_tty->print_cr("_eden_chunk_index=" SIZE_FORMAT ", " + "_eden_chunk_capacity=" SIZE_FORMAT, + _eden_chunk_index, _eden_chunk_capacity); + for (size_t i = 0; i < _eden_chunk_index; i++) { + gclog_or_tty->print_cr("_eden_chunk_array[" SIZE_FORMAT "]=" PTR_FORMAT, + i, _eden_chunk_array[i]); + } + } + // Survivor + if (_survivor_chunk_array != NULL) { + gclog_or_tty->print_cr("survivor " PTR_FORMAT "-" PTR_FORMAT "-" PTR_FORMAT "(" SIZE_FORMAT ")", + from_space->bottom(), from_space->top(), + from_space->end(), from_space->capacity()); + gclog_or_tty->print_cr("_survivor_chunk_index=" SIZE_FORMAT ", " + "_survivor_chunk_capacity=" SIZE_FORMAT, + _survivor_chunk_index, _survivor_chunk_capacity); + for (size_t i = 0; i < _survivor_chunk_index; i++) { + gclog_or_tty->print_cr("_survivor_chunk_array[" SIZE_FORMAT "]=" PTR_FORMAT, + i, _survivor_chunk_array[i]); + } + } +} + void CMSCollector::getFreelistLocks() const { // Get locks for all free lists in all generations that this // collector is responsible for @@ -3549,6 +3583,31 @@ // CMS work +// The common parts of CMSParInitialMarkTask and CMSParRemarkTask. +class CMSParMarkTask : public AbstractGangTask { + protected: + CMSCollector* _collector; + int _n_workers; + CMSParMarkTask(const char* name, CMSCollector* collector, int n_workers) : + AbstractGangTask(name), + _collector(collector), + _n_workers(n_workers) {} + // Work method in support of parallel rescan ... of young gen spaces + void do_young_space_rescan(uint worker_id, OopsInGenClosure* cl, + ContiguousSpace* space, + HeapWord** chunk_array, size_t chunk_top); + void work_on_young_gen_roots(uint worker_id, OopsInGenClosure* cl); +}; + +// Parallel initial mark task +class CMSParInitialMarkTask: public CMSParMarkTask { + public: + CMSParInitialMarkTask(CMSCollector* collector, int n_workers) : + CMSParMarkTask("Scan roots and young gen for initial mark in parallel", + collector, n_workers) {} + void work(uint worker_id); +}; + // Checkpoint the roots into this generation from outside // this generation. [Note this initial checkpoint need only // be approximate -- we'll do a catch up phase subsequently.] @@ -3646,19 +3705,42 @@ // the klasses. The claimed marks need to be cleared before marking starts. ClassLoaderDataGraph::clear_claimed_marks(); - CMKlassClosure klass_closure(¬Older); + if (CMSPrintEdenSurvivorChunks) { + print_eden_and_survivor_chunk_arrays(); + } + { COMPILER2_PRESENT(DerivedPointerTableDeactivate dpt_deact;) - gch->rem_set()->prepare_for_younger_refs_iterate(false); // Not parallel. - gch->gen_process_strong_roots(_cmsGen->level(), - true, // younger gens are roots - true, // activate StrongRootsScope - false, // not scavenging - SharedHeap::ScanningOption(roots_scanning_options()), - ¬Older, - true, // walk all of code cache if (so & SO_CodeCache) - NULL, - &klass_closure); + if (CMSParallelInitialMarkEnabled && CollectedHeap::use_parallel_gc_threads()) { + // The parallel version. + FlexibleWorkGang* workers = gch->workers(); + assert(workers != NULL, "Need parallel worker threads."); + int n_workers = workers->active_workers(); + CMSParInitialMarkTask tsk(this, n_workers); + gch->set_par_threads(n_workers); + initialize_sequential_subtasks_for_young_gen_rescan(n_workers); + if (n_workers > 1) { + GenCollectedHeap::StrongRootsScope srs(gch); + workers->run_task(&tsk); + } else { + GenCollectedHeap::StrongRootsScope srs(gch); + tsk.work(0); + } + gch->set_par_threads(0); + } else { + // The serial version. + CMKlassClosure klass_closure(¬Older); + gch->rem_set()->prepare_for_younger_refs_iterate(false); // Not parallel. + gch->gen_process_strong_roots(_cmsGen->level(), + true, // younger gens are roots + true, // activate StrongRootsScope + false, // not scavenging + SharedHeap::ScanningOption(roots_scanning_options()), + ¬Older, + true, // walk all of code cache if (so & SO_CodeCache) + NULL, + &klass_closure); + } } // Clear mod-union table; it will be dirtied in the prologue of @@ -4417,7 +4499,9 @@ verify_overflow_empty(); _abort_preclean = false; if (CMSPrecleaningEnabled) { - _eden_chunk_index = 0; + if (!CMSEdenChunksRecordAlways) { + _eden_chunk_index = 0; + } size_t used = get_eden_used(); size_t capacity = get_eden_capacity(); // Don't start sampling unless we will get sufficiently @@ -4526,7 +4610,9 @@ if (!_start_sampling) { return; } - if (_eden_chunk_array) { + // When CMSEdenChunksRecordAlways is true, the eden chunk array + // is populated by the young generation. + if (_eden_chunk_array != NULL && !CMSEdenChunksRecordAlways) { if (_eden_chunk_index < _eden_chunk_capacity) { _eden_chunk_array[_eden_chunk_index] = *_top_addr; // take sample assert(_eden_chunk_array[_eden_chunk_index] <= *_end_addr, @@ -5010,6 +5096,10 @@ // Update the saved marks which may affect the root scans. gch->save_marks(); + if (CMSPrintEdenSurvivorChunks) { + print_eden_and_survivor_chunk_arrays(); + } + { COMPILER2_PRESENT(DerivedPointerTableDeactivate dpt_deact;) @@ -5116,10 +5206,53 @@ } } +void CMSParInitialMarkTask::work(uint worker_id) { + elapsedTimer _timer; + ResourceMark rm; + HandleMark hm; + + // ---------- scan from roots -------------- + _timer.start(); + GenCollectedHeap* gch = GenCollectedHeap::heap(); + Par_MarkRefsIntoClosure par_mri_cl(_collector->_span, &(_collector->_markBitMap)); + CMKlassClosure klass_closure(&par_mri_cl); + + // ---------- young gen roots -------------- + { + work_on_young_gen_roots(worker_id, &par_mri_cl); + _timer.stop(); + if (PrintCMSStatistics != 0) { + gclog_or_tty->print_cr( + "Finished young gen initial mark scan work in %dth thread: %3.3f sec", + worker_id, _timer.seconds()); + } + } + + // ---------- remaining roots -------------- + _timer.reset(); + _timer.start(); + gch->gen_process_strong_roots(_collector->_cmsGen->level(), + false, // yg was scanned above + false, // this is parallel code + false, // not scavenging + SharedHeap::ScanningOption(_collector->CMSCollector::roots_scanning_options()), + &par_mri_cl, + true, // walk all of code cache if (so & SO_CodeCache) + NULL, + &klass_closure); + assert(_collector->should_unload_classes() + || (_collector->CMSCollector::roots_scanning_options() & SharedHeap::SO_CodeCache), + "if we didn't scan the code cache, we have to be ready to drop nmethods with expired weak oops"); + _timer.stop(); + if (PrintCMSStatistics != 0) { + gclog_or_tty->print_cr( + "Finished remaining root initial mark scan work in %dth thread: %3.3f sec", + worker_id, _timer.seconds()); + } +} + // Parallel remark task -class CMSParRemarkTask: public AbstractGangTask { - CMSCollector* _collector; - int _n_workers; +class CMSParRemarkTask: public CMSParMarkTask { CompactibleFreeListSpace* _cms_space; // The per-thread work queues, available here for stealing. @@ -5133,10 +5266,9 @@ CompactibleFreeListSpace* cms_space, int n_workers, FlexibleWorkGang* workers, OopTaskQueueSet* task_queues): - AbstractGangTask("Rescan roots and grey objects in parallel"), - _collector(collector), + CMSParMarkTask("Rescan roots and grey objects in parallel", + collector, n_workers), _cms_space(cms_space), - _n_workers(n_workers), _task_queues(task_queues), _term(n_workers, task_queues) { } @@ -5150,11 +5282,6 @@ void work(uint worker_id); private: - // Work method in support of parallel rescan ... of young gen spaces - void do_young_space_rescan(int i, Par_MarkRefsIntoAndScanClosure* cl, - ContiguousSpace* space, - HeapWord** chunk_array, size_t chunk_top); - // ... of dirty cards in old space void do_dirty_card_rescan_tasks(CompactibleFreeListSpace* sp, int i, Par_MarkRefsIntoAndScanClosure* cl); @@ -5186,6 +5313,25 @@ } }; +void CMSParMarkTask::work_on_young_gen_roots(uint worker_id, OopsInGenClosure* cl) { + DefNewGeneration* dng = _collector->_young_gen->as_DefNewGeneration(); + EdenSpace* eden_space = dng->eden(); + ContiguousSpace* from_space = dng->from(); + ContiguousSpace* to_space = dng->to(); + + HeapWord** eca = _collector->_eden_chunk_array; + size_t ect = _collector->_eden_chunk_index; + HeapWord** sca = _collector->_survivor_chunk_array; + size_t sct = _collector->_survivor_chunk_index; + + assert(ect <= _collector->_eden_chunk_capacity, "out of bounds"); + assert(sct <= _collector->_survivor_chunk_capacity, "out of bounds"); + + do_young_space_rescan(worker_id, cl, to_space, NULL, 0); + do_young_space_rescan(worker_id, cl, from_space, sca, sct); + do_young_space_rescan(worker_id, cl, eden_space, eca, ect); +} + // work_queue(i) is passed to the closure // Par_MarkRefsIntoAndScanClosure. The "i" parameter // also is passed to do_dirty_card_rescan_tasks() and to @@ -5210,23 +5356,7 @@ // work first. // ---------- young gen roots -------------- { - DefNewGeneration* dng = _collector->_young_gen->as_DefNewGeneration(); - EdenSpace* eden_space = dng->eden(); - ContiguousSpace* from_space = dng->from(); - ContiguousSpace* to_space = dng->to(); - - HeapWord** eca = _collector->_eden_chunk_array; - size_t ect = _collector->_eden_chunk_index; - HeapWord** sca = _collector->_survivor_chunk_array; - size_t sct = _collector->_survivor_chunk_index; - - assert(ect <= _collector->_eden_chunk_capacity, "out of bounds"); - assert(sct <= _collector->_survivor_chunk_capacity, "out of bounds"); - - do_young_space_rescan(worker_id, &par_mrias_cl, to_space, NULL, 0); - do_young_space_rescan(worker_id, &par_mrias_cl, from_space, sca, sct); - do_young_space_rescan(worker_id, &par_mrias_cl, eden_space, eca, ect); - + work_on_young_gen_roots(worker_id, &par_mrias_cl); _timer.stop(); if (PrintCMSStatistics != 0) { gclog_or_tty->print_cr( @@ -5334,8 +5464,8 @@ // Note that parameter "i" is not used. void -CMSParRemarkTask::do_young_space_rescan(int i, - Par_MarkRefsIntoAndScanClosure* cl, ContiguousSpace* space, +CMSParMarkTask::do_young_space_rescan(uint worker_id, + OopsInGenClosure* cl, ContiguousSpace* space, HeapWord** chunk_array, size_t chunk_top) { // Until all tasks completed: // . claim an unclaimed task @@ -5530,6 +5660,32 @@ "Else our work is not yet done"); } +// Record object boundaries in _eden_chunk_array by sampling the eden +// top in the slow-path eden object allocation code path and record +// the boundaries, if CMSEdenChunksRecordAlways is true. If +// CMSEdenChunksRecordAlways is false, we use the other asynchronous +// sampling in sample_eden() that activates during the part of the +// preclean phase. +void CMSCollector::sample_eden_chunk() { + if (CMSEdenChunksRecordAlways && _eden_chunk_array != NULL) { + if (_eden_chunk_lock->try_lock()) { + // Record a sample. This is the critical section. The contents + // of the _eden_chunk_array have to be non-decreasing in the + // address order. + _eden_chunk_array[_eden_chunk_index] = *_top_addr; + assert(_eden_chunk_array[_eden_chunk_index] <= *_end_addr, + "Unexpected state of Eden"); + if (_eden_chunk_index == 0 || + ((_eden_chunk_array[_eden_chunk_index] > _eden_chunk_array[_eden_chunk_index-1]) && + (pointer_delta(_eden_chunk_array[_eden_chunk_index], + _eden_chunk_array[_eden_chunk_index-1]) >= CMSSamplingGrain))) { + _eden_chunk_index++; // commit sample + } + _eden_chunk_lock->unlock(); + } + } +} + // Return a thread-local PLAB recording array, as appropriate. void* CMSCollector::get_data_recorder(int thr_num) { if (_survivor_plab_array != NULL && @@ -5553,12 +5709,13 @@ // Merge the per-thread plab arrays into the global survivor chunk // array which will provide the partitioning of the survivor space -// for CMS rescan. +// for CMS initial scan and rescan. void CMSCollector::merge_survivor_plab_arrays(ContiguousSpace* surv, int no_of_gc_threads) { assert(_survivor_plab_array != NULL, "Error"); assert(_survivor_chunk_array != NULL, "Error"); - assert(_collectorState == FinalMarking, "Error"); + assert(_collectorState == FinalMarking || + (CMSParallelInitialMarkEnabled && _collectorState == InitialMarking), "Error"); for (int j = 0; j < no_of_gc_threads; j++) { _cursor[j] = 0; } @@ -5621,7 +5778,7 @@ } // Set up the space's par_seq_tasks structure for work claiming -// for parallel rescan of young gen. +// for parallel initial scan and rescan of young gen. // See ParRescanTask where this is currently used. void CMSCollector:: @@ -6748,6 +6905,28 @@ void MarkRefsIntoClosure::do_oop(oop* p) { MarkRefsIntoClosure::do_oop_work(p); } void MarkRefsIntoClosure::do_oop(narrowOop* p) { MarkRefsIntoClosure::do_oop_work(p); } +Par_MarkRefsIntoClosure::Par_MarkRefsIntoClosure( + MemRegion span, CMSBitMap* bitMap): + _span(span), + _bitMap(bitMap) +{ + assert(_ref_processor == NULL, "deliberately left NULL"); + assert(_bitMap->covers(_span), "_bitMap/_span mismatch"); +} + +void Par_MarkRefsIntoClosure::do_oop(oop obj) { + // if p points into _span, then mark corresponding bit in _markBitMap + assert(obj->is_oop(), "expected an oop"); + HeapWord* addr = (HeapWord*)obj; + if (_span.contains(addr)) { + // this should be made more efficient + _bitMap->par_mark(addr); + } +} + +void Par_MarkRefsIntoClosure::do_oop(oop* p) { Par_MarkRefsIntoClosure::do_oop_work(p); } +void Par_MarkRefsIntoClosure::do_oop(narrowOop* p) { Par_MarkRefsIntoClosure::do_oop_work(p); } + // A variant of the above, used for CMS marking verification. MarkRefsIntoVerifyClosure::MarkRefsIntoVerifyClosure( MemRegion span, CMSBitMap* verification_bm, CMSBitMap* cms_bm): @@ -9305,7 +9484,6 @@ return; } } - // Transfer some number of overflown objects to usual marking // stack. Return true if some objects were transferred. bool MarkRefsIntoAndScanClosure::take_from_overflow_list() { @@ -9377,4 +9555,3 @@ ShouldNotReachHere(); } } -
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp Thu Aug 01 17:17:52 2013 -0700 @@ -515,6 +515,8 @@ friend class ConcurrentMarkSweepThread; friend class ConcurrentMarkSweepGeneration; friend class CompactibleFreeListSpace; + friend class CMSParMarkTask; + friend class CMSParInitialMarkTask; friend class CMSParRemarkTask; friend class CMSConcMarkingTask; friend class CMSRefProcTaskProxy; @@ -749,6 +751,7 @@ Generation* _young_gen; // the younger gen HeapWord** _top_addr; // ... Top of Eden HeapWord** _end_addr; // ... End of Eden + Mutex* _eden_chunk_lock; HeapWord** _eden_chunk_array; // ... Eden partitioning array size_t _eden_chunk_index; // ... top (exclusive) of array size_t _eden_chunk_capacity; // ... max entries in array @@ -950,6 +953,7 @@ // Support for parallel remark of survivor space void* get_data_recorder(int thr_num); + void sample_eden_chunk(); CMSBitMap* markBitMap() { return &_markBitMap; } void directAllocated(HeapWord* start, size_t size); @@ -1027,6 +1031,8 @@ // Initialization errors bool completed_initialization() { return _completed_initialization; } + + void print_eden_and_survivor_chunk_arrays(); }; class CMSExpansionCause : public AllStatic { @@ -1317,6 +1323,10 @@ //Delegate to collector return collector()->get_data_recorder(thr_num); } + void sample_eden_chunk() { + //Delegate to collector + return collector()->sample_eden_chunk(); + } // Printing const char* name() const;
--- a/src/share/vm/gc_implementation/g1/g1_globals.hpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/gc_implementation/g1/g1_globals.hpp Thu Aug 01 17:17:52 2013 -0700 @@ -96,11 +96,6 @@ "the buffer will be enqueued for processing. A value of 0 " \ "specifies that mutator threads should not do such filtering.") \ \ - develop(intx, G1ExtraRegionSurvRate, 33, \ - "If the young survival rate is S, and there's room left in " \ - "to-space, we will allow regions whose survival rate is up to " \ - "S + (1 - S)*X, where X is this parameter (as a fraction.)") \ - \ develop(bool, G1SATBPrintStubs, false, \ "If true, print generated stubs for the SATB barrier") \ \ @@ -110,9 +105,6 @@ develop(bool, G1RSBarrierRegionFilter, true, \ "If true, generate region filtering code in RS barrier") \ \ - develop(bool, G1RSBarrierNullFilter, true, \ - "If true, generate null-pointer filtering code in RS barrier") \ - \ develop(bool, G1DeferredRSUpdate, true, \ "If true, use deferred RS updates") \ \ @@ -120,9 +112,6 @@ "If true, verify that no dirty cards remain after RS log " \ "processing.") \ \ - develop(bool, G1RSCountHisto, false, \ - "If true, print a histogram of RS occupancies after each pause") \ - \ diagnostic(bool, G1PrintRegionLivenessInfo, false, \ "Prints the liveness information for all regions in the heap " \ "at the end of a marking cycle.") \ @@ -169,9 +158,6 @@ product(uintx, G1ConcRSHotCardLimit, 4, \ "The threshold that defines (>=) a hot card.") \ \ - develop(bool, G1PrintOopAppls, false, \ - "When true, print applications of closures to external locs.") \ - \ develop(intx, G1RSetRegionEntriesBase, 256, \ "Max number of regions in a fine-grain table per MB.") \ \
--- a/src/share/vm/gc_implementation/g1/heapRegion.cpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/gc_implementation/g1/heapRegion.cpp Thu Aug 01 17:17:52 2013 -0700 @@ -314,6 +314,11 @@ region_size = MAX_REGION_SIZE; } + if (region_size != G1HeapRegionSize) { + // Update the flag to make sure that PrintFlagsFinal logs the correct value + FLAG_SET_ERGO(uintx, G1HeapRegionSize, region_size); + } + // And recalculate the log. region_size_log = log2_long((jlong) region_size);
--- a/src/share/vm/memory/defNewGeneration.cpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/memory/defNewGeneration.cpp Thu Aug 01 17:17:52 2013 -0700 @@ -1033,6 +1033,9 @@ // have to use it here, as well. HeapWord* result = eden()->par_allocate(word_size); if (result != NULL) { + if (CMSEdenChunksRecordAlways && _next_gen != NULL) { + _next_gen->sample_eden_chunk(); + } return result; } do { @@ -1063,13 +1066,19 @@ // circular dependency at compile time. if (result == NULL) { result = allocate_from_space(word_size); + } else if (CMSEdenChunksRecordAlways && _next_gen != NULL) { + _next_gen->sample_eden_chunk(); } return result; } HeapWord* DefNewGeneration::par_allocate(size_t word_size, bool is_tlab) { - return eden()->par_allocate(word_size); + HeapWord* res = eden()->par_allocate(word_size); + if (CMSEdenChunksRecordAlways && _next_gen != NULL) { + _next_gen->sample_eden_chunk(); + } + return res; } void DefNewGeneration::gc_prologue(bool full) {
--- a/src/share/vm/memory/generation.hpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/memory/generation.hpp Thu Aug 01 17:17:52 2013 -0700 @@ -455,6 +455,7 @@ // expected to be GC worker thread-local, with the worker index // indicated by "thr_num". virtual void* get_data_recorder(int thr_num) { return NULL; } + virtual void sample_eden_chunk() {} // Some generations may require some cleanup actions before allowing // a verification.
--- a/src/share/vm/memory/sharedHeap.cpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/memory/sharedHeap.cpp Thu Aug 01 17:17:52 2013 -0700 @@ -65,7 +65,8 @@ } _sh = this; // ch is static, should be set only once. if ((UseParNewGC || - (UseConcMarkSweepGC && CMSParallelRemarkEnabled) || + (UseConcMarkSweepGC && (CMSParallelInitialMarkEnabled || + CMSParallelRemarkEnabled)) || UseG1GC) && ParallelGCThreads > 0) { _workers = new FlexibleWorkGang("Parallel GC Threads", ParallelGCThreads,
--- a/src/share/vm/runtime/arguments.cpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/runtime/arguments.cpp Thu Aug 01 17:17:52 2013 -0700 @@ -1891,6 +1891,10 @@ warning("Using MaxGCMinorPauseMillis as minor pause goal is deprecated" "and will likely be removed in future release"); } + if (FLAG_IS_CMDLINE(DefaultMaxRAMFraction)) { + warning("DefaultMaxRAMFraction is deprecated and will likely be removed in a future release. " + "Use MaxRAMFraction instead."); + } } // Check stack pages settings
--- a/src/share/vm/runtime/globals.hpp Wed Jul 31 19:05:03 2013 -0400 +++ b/src/share/vm/runtime/globals.hpp Thu Aug 01 17:17:52 2013 -0700 @@ -1689,6 +1689,9 @@ product(bool, CMSAbortSemantics, false, \ "Whether abort-on-overflow semantics is implemented") \ \ + product(bool, CMSParallelInitialMarkEnabled, true, \ + "Use the parallel initial mark.") \ + \ product(bool, CMSParallelRemarkEnabled, true, \ "Whether parallel remark enabled (only if ParNewGC)") \ \ @@ -1700,6 +1703,14 @@ "Whether to always record survivor space PLAB bdries" \ " (effective only if CMSParallelSurvivorRemarkEnabled)") \ \ + product(bool, CMSEdenChunksRecordAlways, true, \ + "Whether to always record eden chunks used for " \ + "the parallel initial mark or remark of eden" ) \ + \ + product(bool, CMSPrintEdenSurvivorChunks, false, \ + "Print the eden and the survivor chunks used for the parallel " \ + "initial mark or remark of the eden/survivor spaces") \ + \ product(bool, CMSConcurrentMTEnabled, true, \ "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ \
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/arguments/TestG1HeapRegionSize.java Thu Aug 01 17:17:52 2013 -0700 @@ -0,0 +1,64 @@ +/* +* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. +* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. +* +* This code is free software; you can redistribute it and/or modify it +* under the terms of the GNU General Public License version 2 only, as +* published by the Free Software Foundation. +* +* This code is distributed in the hope that it will be useful, but WITHOUT +* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +* version 2 for more details (a copy is included in the LICENSE file that +* accompanied this code). +* +* You should have received a copy of the GNU General Public License version +* 2 along with this work; if not, write to the Free Software Foundation, +* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +* +* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA +* or visit www.oracle.com if you need additional information or have any +* questions. +*/ + +/* + * @test TestG1HeapRegionSize + * @key gc + * @bug 8021879 + * @summary Verify that the flag G1HeapRegionSize is updated properly + * @run main/othervm -Xmx64m TestG1HeapRegionSize 1048576 + * @run main/othervm -XX:G1HeapRegionSize=2m -Xmx64m TestG1HeapRegionSize 2097152 + * @run main/othervm -XX:G1HeapRegionSize=3m -Xmx64m TestG1HeapRegionSize 2097152 + * @run main/othervm -XX:G1HeapRegionSize=64m -Xmx256m TestG1HeapRegionSize 33554432 + */ + +import sun.management.ManagementFactoryHelper; +import com.sun.management.HotSpotDiagnosticMXBean; +import com.sun.management.VMOption; + +public class TestG1HeapRegionSize { + + public static void main(String[] args) { + HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean(); + + VMOption option = diagnostic.getVMOption("UseG1GC"); + if (option.getValue().equals("false")) { + System.out.println("Skipping this test. It is only a G1 test."); + return; + } + + String expectedValue = getExpectedValue(args); + option = diagnostic.getVMOption("G1HeapRegionSize"); + if (!expectedValue.equals(option.getValue())) { + throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + option.getValue()); + } + } + + private static String getExpectedValue(String[] args) { + if (args.length != 1) { + throw new RuntimeException("Wrong number of arguments. Expected 1 but got " + args.length); + } + return args[0]; + } + +}
--- a/test/gc/g1/TestPrintRegionRememberedSetInfo.java Wed Jul 31 19:05:03 2013 -0400 +++ b/test/gc/g1/TestPrintRegionRememberedSetInfo.java Thu Aug 01 17:17:52 2013 -0700 @@ -27,7 +27,7 @@ * @bug 8014240 * @summary Test output of G1PrintRegionRememberedSetInfo * @library /testlibrary - * @build TestPrintRegionRememberedSetInfo + * @run main TestPrintRegionRememberedSetInfo * @author thomas.schatzl@oracle.com */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/startup_warnings/TestDefaultMaxRAMFraction.java Thu Aug 01 17:17:52 2013 -0700 @@ -0,0 +1,44 @@ +/* +* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. +* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. +* +* This code is free software; you can redistribute it and/or modify it +* under the terms of the GNU General Public License version 2 only, as +* published by the Free Software Foundation. +* +* This code is distributed in the hope that it will be useful, but WITHOUT +* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +* version 2 for more details (a copy is included in the LICENSE file that +* accompanied this code). +* +* You should have received a copy of the GNU General Public License version +* 2 along with this work; if not, write to the Free Software Foundation, +* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +* +* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA +* or visit www.oracle.com if you need additional information or have any +* questions. +*/ + +/* +* @test TestDefaultMaxRAMFraction +* @key gc +* @bug 8021967 +* @summary Test that the deprecated TestDefaultMaxRAMFraction flag print a warning message +* @library /testlibrary +*/ + +import com.oracle.java.testlibrary.OutputAnalyzer; +import com.oracle.java.testlibrary.ProcessTools; + +public class TestDefaultMaxRAMFraction { + public static void main(String[] args) throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:DefaultMaxRAMFraction=4", "-version"); + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + output.shouldContain("warning: DefaultMaxRAMFraction is deprecated and will likely be removed in a future release. Use MaxRAMFraction instead."); + output.shouldNotContain("error"); + output.shouldHaveExitValue(0); + } + +}