Mercurial > hg > graal-compiler
view src/share/vm/services/nmtDCmd.cpp @ 21826:41c3c456e326 jdk8u45-b01
Merge
author | asaha |
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date | Fri, 12 Dec 2014 14:39:40 -0800 |
parents | 833b0f92429a |
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/* * Copyright (c) 2012, 2014, 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 "runtime/mutexLocker.hpp" #include "services/nmtDCmd.hpp" #include "services/memReporter.hpp" #include "services/memTracker.hpp" #include "utilities/globalDefinitions.hpp" NMTDCmd::NMTDCmd(outputStream* output, bool heap): DCmdWithParser(output, heap), _summary("summary", "request runtime to report current memory summary, " \ "which includes total reserved and committed memory, along " \ "with memory usage summary by each subsytem.", "BOOLEAN", false, "false"), _detail("detail", "request runtime to report memory allocation >= " "1K by each callsite.", "BOOLEAN", false, "false"), _baseline("baseline", "request runtime to baseline current memory usage, " \ "so it can be compared against in later time.", "BOOLEAN", false, "false"), _summary_diff("summary.diff", "request runtime to report memory summary " \ "comparison against previous baseline.", "BOOLEAN", false, "false"), _detail_diff("detail.diff", "request runtime to report memory detail " \ "comparison against previous baseline, which shows the memory " \ "allocation activities at different callsites.", "BOOLEAN", false, "false"), _shutdown("shutdown", "request runtime to shutdown itself and free the " \ "memory used by runtime.", "BOOLEAN", false, "false"), _statistics("statistics", "print tracker statistics for tuning purpose.", \ "BOOLEAN", false, "false"), _scale("scale", "Memory usage in which scale, KB, MB or GB", "STRING", false, "KB") { _dcmdparser.add_dcmd_option(&_summary); _dcmdparser.add_dcmd_option(&_detail); _dcmdparser.add_dcmd_option(&_baseline); _dcmdparser.add_dcmd_option(&_summary_diff); _dcmdparser.add_dcmd_option(&_detail_diff); _dcmdparser.add_dcmd_option(&_shutdown); _dcmdparser.add_dcmd_option(&_statistics); _dcmdparser.add_dcmd_option(&_scale); } size_t NMTDCmd::get_scale(const char* scale) const { if (scale == NULL) return 0; return NMTUtil::scale_from_name(scale); } void NMTDCmd::execute(DCmdSource source, TRAPS) { // Check NMT state // native memory tracking has to be on if (MemTracker::tracking_level() == NMT_off) { output()->print_cr("Native memory tracking is not enabled"); return; } else if (MemTracker::tracking_level() == NMT_minimal) { output()->print_cr("Native memory tracking has been shutdown"); return; } const char* scale_value = _scale.value(); size_t scale_unit = get_scale(scale_value); if (scale_unit == 0) { output()->print_cr("Incorrect scale value: %s", scale_value); return; } int nopt = 0; if (_summary.is_set() && _summary.value()) { ++nopt; } if (_detail.is_set() && _detail.value()) { ++nopt; } if (_baseline.is_set() && _baseline.value()) { ++nopt; } if (_summary_diff.is_set() && _summary_diff.value()) { ++nopt; } if (_detail_diff.is_set() && _detail_diff.value()) { ++nopt; } if (_shutdown.is_set() && _shutdown.value()) { ++nopt; } if (_statistics.is_set() && _statistics.value()) { ++nopt; } if (nopt > 1) { output()->print_cr("At most one of the following option can be specified: " \ "summary, detail, baseline, summary.diff, detail.diff, shutdown"); return; } else if (nopt == 0) { if (_summary.is_set()) { output()->print_cr("No command to execute"); return; } else { _summary.set_value(true); } } // Serialize NMT query MutexLocker locker(MemTracker::query_lock()); if (_summary.value()) { report(true, scale_unit); } else if (_detail.value()) { if (!check_detail_tracking_level(output())) { return; } report(false, scale_unit); } else if (_baseline.value()) { MemBaseline& baseline = MemTracker::get_baseline(); if (!baseline.baseline(MemTracker::tracking_level() != NMT_detail)) { output()->print_cr("Baseline failed"); } else { output()->print_cr("Baseline succeeded"); } } else if (_summary_diff.value()) { MemBaseline& baseline = MemTracker::get_baseline(); if (baseline.baseline_type() >= MemBaseline::Summary_baselined) { report_diff(true, scale_unit); } else { output()->print_cr("No baseline for comparison"); } } else if (_detail_diff.value()) { if (!check_detail_tracking_level(output())) { return; } MemBaseline& baseline = MemTracker::get_baseline(); if (baseline.baseline_type() == MemBaseline::Detail_baselined) { report_diff(false, scale_unit); } else { output()->print_cr("No detail baseline for comparison"); } } else if (_shutdown.value()) { MemTracker::shutdown(); output()->print_cr("Native memory tracking has been turned off"); } else if (_statistics.value()) { if (check_detail_tracking_level(output())) { MemTracker::tuning_statistics(output()); } } else { ShouldNotReachHere(); output()->print_cr("Unknown command"); } } int NMTDCmd::num_arguments() { ResourceMark rm; NMTDCmd* dcmd = new NMTDCmd(NULL, false); if (dcmd != NULL) { DCmdMark mark(dcmd); return dcmd->_dcmdparser.num_arguments(); } else { return 0; } } void NMTDCmd::report(bool summaryOnly, size_t scale_unit) { MemBaseline baseline; if (baseline.baseline(summaryOnly)) { if (summaryOnly) { MemSummaryReporter rpt(baseline, output(), scale_unit); rpt.report(); } else { MemDetailReporter rpt(baseline, output(), scale_unit); rpt.report(); } } } void NMTDCmd::report_diff(bool summaryOnly, size_t scale_unit) { MemBaseline& early_baseline = MemTracker::get_baseline(); assert(early_baseline.baseline_type() != MemBaseline::Not_baselined, "Not yet baselined"); assert(summaryOnly || early_baseline.baseline_type() == MemBaseline::Detail_baselined, "Not a detail baseline"); MemBaseline baseline; if (baseline.baseline(summaryOnly)) { if (summaryOnly) { MemSummaryDiffReporter rpt(early_baseline, baseline, output(), scale_unit); rpt.report_diff(); } else { MemDetailDiffReporter rpt(early_baseline, baseline, output(), scale_unit); rpt.report_diff(); } } } bool NMTDCmd::check_detail_tracking_level(outputStream* out) { if (MemTracker::tracking_level() == NMT_detail) { return true; } else if (MemTracker::cmdline_tracking_level() == NMT_detail) { out->print_cr("Tracking level has been downgraded due to lack of resources"); return false; } else { out->print_cr("Detail tracking is not enabled"); return false; } }