Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/shared/gcOverheadReporter.cpp @ 665:c89f86385056
6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never
author | jrose |
---|---|
date | Fri, 20 Mar 2009 23:19:36 -0700 |
parents | 37f87013dfd8 |
children |
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/* * Copyright 2001-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ # include "incls/_precompiled.incl" # include "incls/_gcOverheadReporter.cpp.incl" class COReportingThread : public ConcurrentGCThread { private: GCOverheadReporter* _reporter; public: COReportingThread(GCOverheadReporter* reporter) : _reporter(reporter) { guarantee( _reporter != NULL, "precondition" ); create_and_start(); } virtual void run() { initialize_in_thread(); wait_for_universe_init(); int period_ms = GCOverheadReportingPeriodMS; while ( true ) { os::sleep(Thread::current(), period_ms, false); _sts.join(); double now_sec = os::elapsedTime(); _reporter->collect_and_record_conc_overhead(now_sec); _sts.leave(); } terminate(); } }; GCOverheadReporter* GCOverheadReporter::_reporter = NULL; GCOverheadReporter::GCOverheadReporter(size_t group_num, const char* group_names[], size_t length) : _group_num(group_num), _prev_end_sec(0.0) { guarantee( 0 <= group_num && group_num <= MaxGCOverheadGroupNum, "precondition" ); _base = NEW_C_HEAP_ARRAY(GCOverheadReporterEntry, length); _top = _base + length; _curr = _base; for (size_t i = 0; i < group_num; ++i) { guarantee( group_names[i] != NULL, "precondition" ); _group_names[i] = group_names[i]; } } void GCOverheadReporter::add(double start_sec, double end_sec, double* conc_overhead, double stw_overhead) { assert( _curr <= _top, "invariant" ); if (_curr == _top) { guarantee( false, "trace full" ); return; } _curr->_start_sec = start_sec; _curr->_end_sec = end_sec; for (size_t i = 0; i < _group_num; ++i) { _curr->_conc_overhead[i] = (conc_overhead != NULL) ? conc_overhead[i] : 0.0; } _curr->_stw_overhead = stw_overhead; ++_curr; } void GCOverheadReporter::collect_and_record_conc_overhead(double end_sec) { double start_sec = _prev_end_sec; guarantee( end_sec > start_sec, "invariant" ); double conc_overhead[MaxGCOverheadGroupNum]; COTracker::totalConcOverhead(end_sec, _group_num, conc_overhead); add_conc_overhead(start_sec, end_sec, conc_overhead); _prev_end_sec = end_sec; } void GCOverheadReporter::record_stw_start(double start_sec) { guarantee( start_sec > _prev_end_sec, "invariant" ); collect_and_record_conc_overhead(start_sec); } void GCOverheadReporter::record_stw_end(double end_sec) { double start_sec = _prev_end_sec; COTracker::updateAllForSTW(start_sec, end_sec); add_stw_overhead(start_sec, end_sec, 1.0); _prev_end_sec = end_sec; } void GCOverheadReporter::print() const { tty->print_cr(""); tty->print_cr("GC Overhead (%d entries)", _curr - _base); tty->print_cr(""); GCOverheadReporterEntry* curr = _base; while (curr < _curr) { double total = curr->_stw_overhead; for (size_t i = 0; i < _group_num; ++i) total += curr->_conc_overhead[i]; tty->print("OVERHEAD %12.8lf %12.8lf ", curr->_start_sec, curr->_end_sec); for (size_t i = 0; i < _group_num; ++i) tty->print("%s %12.8lf ", _group_names[i], curr->_conc_overhead[i]); tty->print_cr("STW %12.8lf TOT %12.8lf", curr->_stw_overhead, total); ++curr; } tty->print_cr(""); } // statics void GCOverheadReporter::initGCOverheadReporter(size_t group_num, const char* group_names[]) { guarantee( _reporter == NULL, "should only be called once" ); guarantee( 0 <= group_num && group_num <= MaxGCOverheadGroupNum, "precondition" ); guarantee( group_names != NULL, "pre-condition" ); if (GCOverheadReporting) { _reporter = new GCOverheadReporter(group_num, group_names); new COReportingThread(_reporter); } } void GCOverheadReporter::recordSTWStart(double start_sec) { if (_reporter != NULL) _reporter->record_stw_start(start_sec); } void GCOverheadReporter::recordSTWEnd(double end_sec) { if (_reporter != NULL) _reporter->record_stw_end(end_sec); } void GCOverheadReporter::printGCOverhead() { if (_reporter != NULL) _reporter->print(); }