--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSetSummary.cpp Tue May 28 09:32:06 2013 +0200
@@ -0,0 +1,205 @@
+/*
+ * 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc_implementation/g1/concurrentG1Refine.hpp"
+#include "gc_implementation/g1/concurrentG1RefineThread.hpp"
+#include "gc_implementation/g1/heapRegion.hpp"
+#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
+#include "gc_implementation/g1/g1RemSet.inline.hpp"
+#include "gc_implementation/g1/g1RemSetSummary.hpp"
+#include "gc_implementation/g1/heapRegionRemSet.hpp"
+#include "runtime/thread.inline.hpp"
+
+class GetRSThreadVTimeClosure : public ThreadClosure {
+private:
+ G1RemSetSummary* _summary;
+ uint _counter;
+
+public:
+ GetRSThreadVTimeClosure(G1RemSetSummary * summary) : ThreadClosure(), _summary(summary), _counter(0) {
+ assert(_summary != NULL, "just checking");
+ }
+
+ virtual void do_thread(Thread* t) {
+ ConcurrentG1RefineThread* crt = (ConcurrentG1RefineThread*) t;
+ _summary->set_rs_thread_vtime(_counter, crt->vtime_accum());
+ _counter++;
+ }
+};
+
+void G1RemSetSummary::update() {
+ _num_refined_cards = remset()->conc_refine_cards();
+ DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
+ _num_processed_buf_mutator = dcqs.processed_buffers_mut();
+ _num_processed_buf_rs_threads = dcqs.processed_buffers_rs_thread();
+
+ _num_coarsenings = HeapRegionRemSet::n_coarsenings();
+
+ ConcurrentG1Refine * cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();
+ if (_rs_threads_vtimes != NULL) {
+ GetRSThreadVTimeClosure p(this);
+ cg1r->worker_threads_do(&p);
+ }
+ set_sampling_thread_vtime(cg1r->sampling_thread()->vtime_accum());
+}
+
+void G1RemSetSummary::set_rs_thread_vtime(uint thread, double value) {
+ assert(_rs_threads_vtimes != NULL, "just checking");
+ assert(thread < _num_vtimes, "just checking");
+ _rs_threads_vtimes[thread] = value;
+}
+
+double G1RemSetSummary::rs_thread_vtime(uint thread) const {
+ assert(_rs_threads_vtimes != NULL, "just checking");
+ assert(thread < _num_vtimes, "just checking");
+ return _rs_threads_vtimes[thread];
+}
+
+void G1RemSetSummary::initialize(G1RemSet* remset, uint num_workers) {
+ assert(_rs_threads_vtimes == NULL, "just checking");
+ assert(remset != NULL, "just checking");
+
+ _remset = remset;
+ _num_vtimes = num_workers;
+ _rs_threads_vtimes = NEW_C_HEAP_ARRAY(double, _num_vtimes, mtGC);
+ memset(_rs_threads_vtimes, 0, sizeof(double) * _num_vtimes);
+
+ update();
+}
+
+void G1RemSetSummary::set(G1RemSetSummary* other) {
+ assert(other != NULL, "just checking");
+ assert(remset() == other->remset(), "just checking");
+ assert(_num_vtimes == other->_num_vtimes, "just checking");
+
+ _num_refined_cards = other->num_concurrent_refined_cards();
+
+ _num_processed_buf_mutator = other->num_processed_buf_mutator();
+ _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads();
+
+ _num_coarsenings = other->_num_coarsenings;
+
+ memcpy(_rs_threads_vtimes, other->_rs_threads_vtimes, sizeof(double) * _num_vtimes);
+
+ set_sampling_thread_vtime(other->sampling_thread_vtime());
+}
+
+void G1RemSetSummary::subtract_from(G1RemSetSummary* other) {
+ assert(other != NULL, "just checking");
+ assert(remset() == other->remset(), "just checking");
+ assert(_num_vtimes == other->_num_vtimes, "just checking");
+
+ _num_refined_cards = other->num_concurrent_refined_cards() - _num_refined_cards;
+
+ _num_processed_buf_mutator = other->num_processed_buf_mutator() - _num_processed_buf_mutator;
+ _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads() - _num_processed_buf_rs_threads;
+
+ _num_coarsenings = other->num_coarsenings() - _num_coarsenings;
+
+ for (uint i = 0; i < _num_vtimes; i++) {
+ set_rs_thread_vtime(i, other->rs_thread_vtime(i) - rs_thread_vtime(i));
+ }
+
+ _sampling_thread_vtime = other->sampling_thread_vtime() - _sampling_thread_vtime;
+}
+
+class HRRSStatsIter: public HeapRegionClosure {
+ size_t _occupied;
+ size_t _total_mem_sz;
+ size_t _max_mem_sz;
+ HeapRegion* _max_mem_sz_region;
+public:
+ HRRSStatsIter() :
+ _occupied(0),
+ _total_mem_sz(0),
+ _max_mem_sz(0),
+ _max_mem_sz_region(NULL)
+ {}
+
+ bool doHeapRegion(HeapRegion* r) {
+ size_t mem_sz = r->rem_set()->mem_size();
+ if (mem_sz > _max_mem_sz) {
+ _max_mem_sz = mem_sz;
+ _max_mem_sz_region = r;
+ }
+ _total_mem_sz += mem_sz;
+ size_t occ = r->rem_set()->occupied();
+ _occupied += occ;
+ return false;
+ }
+ size_t total_mem_sz() { return _total_mem_sz; }
+ size_t max_mem_sz() { return _max_mem_sz; }
+ size_t occupied() { return _occupied; }
+ HeapRegion* max_mem_sz_region() { return _max_mem_sz_region; }
+};
+
+double calc_percentage(size_t numerator, size_t denominator) {
+ if (denominator != 0) {
+ return (double)numerator / denominator * 100.0;
+ } else {
+ return 0.0f;
+ }
+}
+
+void G1RemSetSummary::print_on(outputStream* out) {
+ out->print_cr("\n Concurrent RS processed "SIZE_FORMAT" cards",
+ num_concurrent_refined_cards());
+ out->print_cr(" Of %d completed buffers:", num_processed_buf_total());
+ out->print_cr(" %8d (%5.1f%%) by concurrent RS threads.",
+ num_processed_buf_total(),
+ calc_percentage(num_processed_buf_rs_threads(), num_processed_buf_total()));
+ out->print_cr(" %8d (%5.1f%%) by mutator threads.",
+ num_processed_buf_mutator(),
+ calc_percentage(num_processed_buf_mutator(), num_processed_buf_total()));
+ out->print_cr(" Concurrent RS threads times (s)");
+ out->print(" ");
+ for (uint i = 0; i < _num_vtimes; i++) {
+ out->print(" %5.2f", rs_thread_vtime(i));
+ }
+ out->cr();
+ out->print_cr(" Concurrent sampling threads times (s)");
+ out->print_cr(" %5.2f", sampling_thread_vtime());
+
+ HRRSStatsIter blk;
+ G1CollectedHeap::heap()->heap_region_iterate(&blk);
+ out->print_cr(" Total heap region rem set sizes = "SIZE_FORMAT"K."
+ " Max = "SIZE_FORMAT"K.",
+ blk.total_mem_sz()/K, blk.max_mem_sz()/K);
+ out->print_cr(" Static structures = "SIZE_FORMAT"K,"
+ " free_lists = "SIZE_FORMAT"K.",
+ HeapRegionRemSet::static_mem_size() / K,
+ HeapRegionRemSet::fl_mem_size() / K);
+ out->print_cr(" "SIZE_FORMAT" occupied cards represented.",
+ blk.occupied());
+ HeapRegion* max_mem_sz_region = blk.max_mem_sz_region();
+ HeapRegionRemSet* rem_set = max_mem_sz_region->rem_set();
+ out->print_cr(" Max size region = "HR_FORMAT", "
+ "size = "SIZE_FORMAT "K, occupied = "SIZE_FORMAT"K.",
+ HR_FORMAT_PARAMS(max_mem_sz_region),
+ (rem_set->mem_size() + K - 1)/K,
+ (rem_set->occupied() + K - 1)/K);
+
+ out->print_cr(" Did %d coarsenings.", num_coarsenings());
+}