jdk8-mips64-public/hotspot: src/share/vm/services/nmtDCmd.cpp@d2a62e0f25eb (annotated)

src/share/vm/services/nmtDCmd.cpp@d2a62e0f25eb (annotated)

src/share/vm/services/nmtDCmd.cpp

Thu, 28 Jun 2012 17:03:16 -0400

author: zgu
date: Thu, 28 Jun 2012 17:03:16 -0400
changeset 3900: d2a62e0f25eb
child 4348: 3f84e17b6bca
permissions: -rw-r--r--

6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain

 /*
  * Copyright (c) 2012, 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 "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"),
 #ifndef PRODUCT
   _debug("debug", "print tracker statistics. Debug only, not thread safe", \
             "BOOLEAN", false, "false"),
 #endif
   _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);
 #ifndef PRODUCT
   _dcmdparser.add_dcmd_option(&_debug);
 #endif
   _dcmdparser.add_dcmd_option(&_scale);
 }
 void NMTDCmd::execute(TRAPS) {
   const char* scale_value = _scale.value();
   size_t scale_unit;
   if (strcmp(scale_value, "KB") == 0 || strcmp(scale_value, "kb") == 0) {
     scale_unit = K;
   } else if (strcmp(scale_value, "MB") == 0 ||
              strcmp(scale_value, "mb") == 0) {
     scale_unit = M;
   } else if (strcmp(scale_value, "GB") == 0 ||
              strcmp(scale_value, "gb") == 0) {
     scale_unit = G;
   } else {
     output()->print_cr("Incorrect scale value: %s", scale_value);
     return;
   }
   int nopt = 0;
   if(_summary.is_set()) { ++nopt; }
   if(_detail.is_set()) { ++nopt; }
   if(_baseline.is_set()) { ++nopt; }
   if(_summary_diff.is_set()) { ++nopt; }
   if(_detail_diff.is_set()) { ++nopt; }
   if(_shutdown.is_set()) { ++nopt; }
 #ifndef PRODUCT
   if(_debug.is_set()) { ++nopt; }
 #endif
   if(nopt > 1) {
       output()->print_cr("At most one of the following option can be specified: " \
         "summary, detail, baseline, summary.diff, detail.diff, shutdown"
 #ifndef PRODUCT
         " ,debug"
 #endif
       );
       return;
   }
   if(nopt == 0) {
       _summary.set_value(true);
   }
 #ifndef PRODUCT
   if (_debug.value()) {
     output()->print_cr("debug command is NOT thread-safe, may cause crash");
     MemTracker::print_tracker_stats(output());
     return;
   }
 #endif
   // native memory tracking has to be on
   if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) {
     // if it is not on, what's the reason?
     output()->print_cr(MemTracker::reason());
     return;
   }
   if (_summary.value()) {
     BaselineTTYOutputer outputer(output());
     MemTracker::print_memory_usage(outputer, scale_unit, true);
   } else if (_detail.value()) {
     BaselineTTYOutputer outputer(output());
     MemTracker::print_memory_usage(outputer, scale_unit, false);
   } else if (_baseline.value()) {
     if (MemTracker::baseline()) {
       output()->print_cr("Successfully baselined.");
     } else {
       output()->print_cr("Baseline failed.");
     }
   } else if (_summary_diff.value()) {
     if (MemTracker::has_baseline()) {
       BaselineTTYOutputer outputer(output());
       MemTracker::compare_memory_usage(outputer, scale_unit, true);
     } else {
       output()->print_cr("No baseline to compare, run 'baseline' command first");
     }
   } else if (_detail_diff.value()) {
     if (MemTracker::has_baseline()) {
       BaselineTTYOutputer outputer(output());
       MemTracker::compare_memory_usage(outputer, scale_unit, false);
     } else {
       output()->print_cr("No baseline to compare to, run 'baseline' command first");
     }
   } else if (_shutdown.value()) {
     MemTracker::shutdown(MemTracker::NMT_shutdown_user);
     output()->print_cr("Shutdown is in progress, it will take a few moments to " \
       "completely shutdown");
   } 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;
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/services/nmtDCmd.cpp@d2a62e0f25eb (annotated)

src/share/vm/services/nmtDCmd.cpp