aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "gc_implementation/g1/concurrentG1Refine.hpp"
aoqi@0: #include "gc_implementation/g1/concurrentG1RefineThread.hpp"
aoqi@0: #include "gc_implementation/g1/heapRegion.hpp"
aoqi@0: #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
aoqi@0: #include "gc_implementation/g1/g1RemSet.inline.hpp"
aoqi@0: #include "gc_implementation/g1/g1RemSetSummary.hpp"
aoqi@0: #include "gc_implementation/g1/heapRegionRemSet.hpp"
aoqi@0: #include "runtime/thread.inline.hpp"
aoqi@0: 
aoqi@0: class GetRSThreadVTimeClosure : public ThreadClosure {
aoqi@0: private:
aoqi@0:   G1RemSetSummary* _summary;
aoqi@0:   uint _counter;
aoqi@0: 
aoqi@0: public:
aoqi@0:   GetRSThreadVTimeClosure(G1RemSetSummary * summary) : ThreadClosure(), _summary(summary), _counter(0) {
aoqi@0:     assert(_summary != NULL, "just checking");
aoqi@0:   }
aoqi@0: 
aoqi@0:   virtual void do_thread(Thread* t) {
aoqi@0:     ConcurrentG1RefineThread* crt = (ConcurrentG1RefineThread*) t;
aoqi@0:     _summary->set_rs_thread_vtime(_counter, crt->vtime_accum());
aoqi@0:     _counter++;
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: void G1RemSetSummary::update() {
aoqi@0:   _num_refined_cards = remset()->conc_refine_cards();
aoqi@0:   DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
aoqi@0:   _num_processed_buf_mutator = dcqs.processed_buffers_mut();
aoqi@0:   _num_processed_buf_rs_threads = dcqs.processed_buffers_rs_thread();
aoqi@0: 
aoqi@0:   _num_coarsenings = HeapRegionRemSet::n_coarsenings();
aoqi@0: 
aoqi@0:   ConcurrentG1Refine * cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
aoqi@0:   if (_rs_threads_vtimes != NULL) {
aoqi@0:     GetRSThreadVTimeClosure p(this);
aoqi@0:     cg1r->worker_threads_do(&p);
aoqi@0:   }
aoqi@0:   set_sampling_thread_vtime(cg1r->sampling_thread()->vtime_accum());
aoqi@0: }
aoqi@0: 
aoqi@0: void G1RemSetSummary::set_rs_thread_vtime(uint thread, double value) {
aoqi@0:   assert(_rs_threads_vtimes != NULL, "just checking");
aoqi@0:   assert(thread < _num_vtimes, "just checking");
aoqi@0:   _rs_threads_vtimes[thread] = value;
aoqi@0: }
aoqi@0: 
aoqi@0: double G1RemSetSummary::rs_thread_vtime(uint thread) const {
aoqi@0:   assert(_rs_threads_vtimes != NULL, "just checking");
aoqi@0:   assert(thread < _num_vtimes, "just checking");
aoqi@0:   return _rs_threads_vtimes[thread];
aoqi@0: }
aoqi@0: 
aoqi@0: void G1RemSetSummary::initialize(G1RemSet* remset) {
aoqi@0:   assert(_rs_threads_vtimes == NULL, "just checking");
aoqi@0:   assert(remset != NULL, "just checking");
aoqi@0: 
aoqi@0:   _remset = remset;
aoqi@0:   _num_vtimes = ConcurrentG1Refine::thread_num();
aoqi@0:   _rs_threads_vtimes = NEW_C_HEAP_ARRAY(double, _num_vtimes, mtGC);
aoqi@0:   memset(_rs_threads_vtimes, 0, sizeof(double) * _num_vtimes);
aoqi@0: 
aoqi@0:   update();
aoqi@0: }
aoqi@0: 
aoqi@0: void G1RemSetSummary::set(G1RemSetSummary* other) {
aoqi@0:   assert(other != NULL, "just checking");
aoqi@0:   assert(remset() == other->remset(), "just checking");
aoqi@0:   assert(_num_vtimes == other->_num_vtimes, "just checking");
aoqi@0: 
aoqi@0:   _num_refined_cards = other->num_concurrent_refined_cards();
aoqi@0: 
aoqi@0:   _num_processed_buf_mutator = other->num_processed_buf_mutator();
aoqi@0:   _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads();
aoqi@0: 
aoqi@0:   _num_coarsenings = other->_num_coarsenings;
aoqi@0: 
aoqi@0:   memcpy(_rs_threads_vtimes, other->_rs_threads_vtimes, sizeof(double) * _num_vtimes);
aoqi@0: 
aoqi@0:   set_sampling_thread_vtime(other->sampling_thread_vtime());
aoqi@0: }
aoqi@0: 
aoqi@0: void G1RemSetSummary::subtract_from(G1RemSetSummary* other) {
aoqi@0:   assert(other != NULL, "just checking");
aoqi@0:   assert(remset() == other->remset(), "just checking");
aoqi@0:   assert(_num_vtimes == other->_num_vtimes, "just checking");
aoqi@0: 
aoqi@0:   _num_refined_cards = other->num_concurrent_refined_cards() - _num_refined_cards;
aoqi@0: 
aoqi@0:   _num_processed_buf_mutator = other->num_processed_buf_mutator() - _num_processed_buf_mutator;
aoqi@0:   _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads() - _num_processed_buf_rs_threads;
aoqi@0: 
aoqi@0:   _num_coarsenings = other->num_coarsenings() - _num_coarsenings;
aoqi@0: 
aoqi@0:   for (uint i = 0; i < _num_vtimes; i++) {
aoqi@0:     set_rs_thread_vtime(i, other->rs_thread_vtime(i) - rs_thread_vtime(i));
aoqi@0:   }
aoqi@0: 
aoqi@0:   _sampling_thread_vtime = other->sampling_thread_vtime() - _sampling_thread_vtime;
aoqi@0: }
aoqi@0: 
aoqi@0: static double percent_of(size_t numerator, size_t denominator) {
aoqi@0:   if (denominator != 0) {
aoqi@0:     return (double)numerator / denominator * 100.0f;
aoqi@0:   } else {
aoqi@0:     return 0.0f;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: static size_t round_to_K(size_t value) {
aoqi@0:   return value / K;
aoqi@0: }
aoqi@0: 
aoqi@0: class RegionTypeCounter VALUE_OBJ_CLASS_SPEC {
aoqi@0: private:
aoqi@0:   const char* _name;
aoqi@0: 
aoqi@0:   size_t _rs_mem_size;
aoqi@0:   size_t _cards_occupied;
aoqi@0:   size_t _amount;
aoqi@0: 
aoqi@0:   size_t _code_root_mem_size;
aoqi@0:   size_t _code_root_elems;
aoqi@0: 
aoqi@0:   double rs_mem_size_percent_of(size_t total) {
aoqi@0:     return percent_of(_rs_mem_size, total);
aoqi@0:   }
aoqi@0: 
aoqi@0:   double cards_occupied_percent_of(size_t total) {
aoqi@0:     return percent_of(_cards_occupied, total);
aoqi@0:   }
aoqi@0: 
aoqi@0:   double code_root_mem_size_percent_of(size_t total) {
aoqi@0:     return percent_of(_code_root_mem_size, total);
aoqi@0:   }
aoqi@0: 
aoqi@0:   double code_root_elems_percent_of(size_t total) {
aoqi@0:     return percent_of(_code_root_elems, total);
aoqi@0:   }
aoqi@0: 
aoqi@0:   size_t amount() const { return _amount; }
aoqi@0: 
aoqi@0: public:
aoqi@0: 
aoqi@0:   RegionTypeCounter(const char* name) : _name(name), _rs_mem_size(0), _cards_occupied(0),
aoqi@0:     _amount(0), _code_root_mem_size(0), _code_root_elems(0) { }
aoqi@0: 
aoqi@0:   void add(size_t rs_mem_size, size_t cards_occupied, size_t code_root_mem_size,
aoqi@0:     size_t code_root_elems) {
aoqi@0:     _rs_mem_size += rs_mem_size;
aoqi@0:     _cards_occupied += cards_occupied;
aoqi@0:     _code_root_mem_size += code_root_mem_size;
aoqi@0:     _code_root_elems += code_root_elems;
aoqi@0:     _amount++;
aoqi@0:   }
aoqi@0: 
aoqi@0:   size_t rs_mem_size() const { return _rs_mem_size; }
aoqi@0:   size_t cards_occupied() const { return _cards_occupied; }
aoqi@0: 
aoqi@0:   size_t code_root_mem_size() const { return _code_root_mem_size; }
aoqi@0:   size_t code_root_elems() const { return _code_root_elems; }
aoqi@0: 
aoqi@0:   void print_rs_mem_info_on(outputStream * out, size_t total) {
aoqi@0:     out->print_cr("    "SIZE_FORMAT_W(8)"K (%5.1f%%) by "SIZE_FORMAT" %s regions",
aoqi@0:         round_to_K(rs_mem_size()), rs_mem_size_percent_of(total), amount(), _name);
aoqi@0:   }
aoqi@0: 
aoqi@0:   void print_cards_occupied_info_on(outputStream * out, size_t total) {
aoqi@0:     out->print_cr("     "SIZE_FORMAT_W(8)" (%5.1f%%) entries by "SIZE_FORMAT" %s regions",
aoqi@0:         cards_occupied(), cards_occupied_percent_of(total), amount(), _name);
aoqi@0:   }
aoqi@0: 
aoqi@0:   void print_code_root_mem_info_on(outputStream * out, size_t total) {
aoqi@0:     out->print_cr("    "SIZE_FORMAT_W(8)"K (%5.1f%%) by "SIZE_FORMAT" %s regions",
aoqi@0:         round_to_K(code_root_mem_size()), code_root_mem_size_percent_of(total), amount(), _name);
aoqi@0:   }
aoqi@0: 
aoqi@0:   void print_code_root_elems_info_on(outputStream * out, size_t total) {
aoqi@0:     out->print_cr("     "SIZE_FORMAT_W(8)" (%5.1f%%) elements by "SIZE_FORMAT" %s regions",
aoqi@0:         code_root_elems(), code_root_elems_percent_of(total), amount(), _name);
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: class HRRSStatsIter: public HeapRegionClosure {
aoqi@0: private:
aoqi@0:   RegionTypeCounter _young;
aoqi@0:   RegionTypeCounter _humonguous;
aoqi@0:   RegionTypeCounter _free;
aoqi@0:   RegionTypeCounter _old;
aoqi@0:   RegionTypeCounter _all;
aoqi@0: 
aoqi@0:   size_t _max_rs_mem_sz;
aoqi@0:   HeapRegion* _max_rs_mem_sz_region;
aoqi@0: 
aoqi@0:   size_t total_rs_mem_sz() const            { return _all.rs_mem_size(); }
aoqi@0:   size_t total_cards_occupied() const       { return _all.cards_occupied(); }
aoqi@0: 
aoqi@0:   size_t max_rs_mem_sz() const              { return _max_rs_mem_sz; }
aoqi@0:   HeapRegion* max_rs_mem_sz_region() const  { return _max_rs_mem_sz_region; }
aoqi@0: 
aoqi@0:   size_t _max_code_root_mem_sz;
aoqi@0:   HeapRegion* _max_code_root_mem_sz_region;
aoqi@0: 
aoqi@0:   size_t total_code_root_mem_sz() const     { return _all.code_root_mem_size(); }
aoqi@0:   size_t total_code_root_elems() const      { return _all.code_root_elems(); }
aoqi@0: 
aoqi@0:   size_t max_code_root_mem_sz() const       { return _max_code_root_mem_sz; }
aoqi@0:   HeapRegion* max_code_root_mem_sz_region() const { return _max_code_root_mem_sz_region; }
aoqi@0: 
aoqi@0: public:
aoqi@0:   HRRSStatsIter() : _all("All"), _young("Young"), _humonguous("Humonguous"),
aoqi@0:     _free("Free"), _old("Old"), _max_code_root_mem_sz_region(NULL), _max_rs_mem_sz_region(NULL),
aoqi@0:     _max_rs_mem_sz(0), _max_code_root_mem_sz(0)
aoqi@0:   {}
aoqi@0: 
aoqi@0:   bool doHeapRegion(HeapRegion* r) {
aoqi@0:     HeapRegionRemSet* hrrs = r->rem_set();
aoqi@0: 
aoqi@0:     // HeapRegionRemSet::mem_size() includes the
aoqi@0:     // size of the strong code roots
aoqi@0:     size_t rs_mem_sz = hrrs->mem_size();
aoqi@0:     if (rs_mem_sz > _max_rs_mem_sz) {
aoqi@0:       _max_rs_mem_sz = rs_mem_sz;
aoqi@0:       _max_rs_mem_sz_region = r;
aoqi@0:     }
aoqi@0:     size_t occupied_cards = hrrs->occupied();
aoqi@0:     size_t code_root_mem_sz = hrrs->strong_code_roots_mem_size();
aoqi@0:     if (code_root_mem_sz > max_code_root_mem_sz()) {
aoqi@0:       _max_code_root_mem_sz_region = r;
aoqi@0:     }
aoqi@0:     size_t code_root_elems = hrrs->strong_code_roots_list_length();
aoqi@0: 
aoqi@0:     RegionTypeCounter* current = NULL;
aoqi@0:     if (r->is_young()) {
aoqi@0:       current = &_young;
aoqi@0:     } else if (r->isHumongous()) {
aoqi@0:       current = &_humonguous;
aoqi@0:     } else if (r->is_empty()) {
aoqi@0:       current = &_free;
aoqi@0:     } else {
aoqi@0:       current = &_old;
aoqi@0:     }
aoqi@0:     current->add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems);
aoqi@0:     _all.add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems);
aoqi@0: 
aoqi@0:     return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   void print_summary_on(outputStream* out) {
aoqi@0:     RegionTypeCounter* counters[] = { &_young, &_humonguous, &_free, &_old, NULL };
aoqi@0: 
aoqi@0:     out->print_cr("\n Current rem set statistics");
aoqi@0:     out->print_cr("  Total per region rem sets sizes = "SIZE_FORMAT"K."
aoqi@0:                   " Max = "SIZE_FORMAT"K.",
aoqi@0:                   round_to_K(total_rs_mem_sz()), round_to_K(max_rs_mem_sz()));
aoqi@0:     for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
aoqi@0:       (*current)->print_rs_mem_info_on(out, total_rs_mem_sz());
aoqi@0:     }
aoqi@0: 
aoqi@0:     out->print_cr("   Static structures = "SIZE_FORMAT"K,"
aoqi@0:                   " free_lists = "SIZE_FORMAT"K.",
aoqi@0:                   round_to_K(HeapRegionRemSet::static_mem_size()),
aoqi@0:                   round_to_K(HeapRegionRemSet::fl_mem_size()));
aoqi@0: 
aoqi@0:     out->print_cr("    "SIZE_FORMAT" occupied cards represented.",
aoqi@0:                   total_cards_occupied());
aoqi@0:     for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
aoqi@0:       (*current)->print_cards_occupied_info_on(out, total_cards_occupied());
aoqi@0:     }
aoqi@0: 
aoqi@0:     // Largest sized rem set region statistics
aoqi@0:     HeapRegionRemSet* rem_set = max_rs_mem_sz_region()->rem_set();
aoqi@0:     out->print_cr("    Region with largest rem set = "HR_FORMAT", "
aoqi@0:                   "size = "SIZE_FORMAT "K, occupied = "SIZE_FORMAT"K.",
aoqi@0:                   HR_FORMAT_PARAMS(max_rs_mem_sz_region()),
aoqi@0:                   round_to_K(rem_set->mem_size()),
aoqi@0:                   round_to_K(rem_set->occupied()));
aoqi@0: 
aoqi@0:     // Strong code root statistics
aoqi@0:     HeapRegionRemSet* max_code_root_rem_set = max_code_root_mem_sz_region()->rem_set();
aoqi@0:     out->print_cr("  Total heap region code root sets sizes = "SIZE_FORMAT"K."
aoqi@0:                   "  Max = "SIZE_FORMAT"K.",
aoqi@0:                   round_to_K(total_code_root_mem_sz()),
aoqi@0:                   round_to_K(max_code_root_rem_set->strong_code_roots_mem_size()));
aoqi@0:     for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
aoqi@0:       (*current)->print_code_root_mem_info_on(out, total_code_root_mem_sz());
aoqi@0:     }
aoqi@0: 
aoqi@0:     out->print_cr("    "SIZE_FORMAT" code roots represented.",
aoqi@0:                   total_code_root_elems());
aoqi@0:     for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) {
aoqi@0:       (*current)->print_code_root_elems_info_on(out, total_code_root_elems());
aoqi@0:     }
aoqi@0: 
aoqi@0:     out->print_cr("    Region with largest amount of code roots = "HR_FORMAT", "
aoqi@0:                   "size = "SIZE_FORMAT "K, num_elems = "SIZE_FORMAT".",
aoqi@0:                   HR_FORMAT_PARAMS(max_code_root_mem_sz_region()),
aoqi@0:                   round_to_K(max_code_root_rem_set->strong_code_roots_mem_size()),
aoqi@0:                   round_to_K(max_code_root_rem_set->strong_code_roots_list_length()));
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: void G1RemSetSummary::print_on(outputStream* out) {
aoqi@0:   out->print_cr("\n Recent concurrent refinement statistics");
aoqi@0:   out->print_cr("  Processed "SIZE_FORMAT" cards",
aoqi@0:                 num_concurrent_refined_cards());
aoqi@0:   out->print_cr("  Of "SIZE_FORMAT" completed buffers:", num_processed_buf_total());
aoqi@0:   out->print_cr("     "SIZE_FORMAT_W(8)" (%5.1f%%) by concurrent RS threads.",
aoqi@0:                 num_processed_buf_total(),
aoqi@0:                 percent_of(num_processed_buf_rs_threads(), num_processed_buf_total()));
aoqi@0:   out->print_cr("     "SIZE_FORMAT_W(8)" (%5.1f%%) by mutator threads.",
aoqi@0:                 num_processed_buf_mutator(),
aoqi@0:                 percent_of(num_processed_buf_mutator(), num_processed_buf_total()));
aoqi@0:   out->print_cr("  Did "SIZE_FORMAT" coarsenings.", num_coarsenings());
aoqi@0:   out->print_cr("  Concurrent RS threads times (s)");
aoqi@0:   out->print("     ");
aoqi@0:   for (uint i = 0; i < _num_vtimes; i++) {
aoqi@0:     out->print("    %5.2f", rs_thread_vtime(i));
aoqi@0:   }
aoqi@0:   out->cr();
aoqi@0:   out->print_cr("  Concurrent sampling threads times (s)");
aoqi@0:   out->print_cr("         %5.2f", sampling_thread_vtime());
aoqi@0: 
aoqi@0:   HRRSStatsIter blk;
aoqi@0:   G1CollectedHeap::heap()->heap_region_iterate(&blk);
aoqi@0:   blk.print_summary_on(out);
aoqi@0: }