1 /*
   2  * Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/shared/collectorCounters.hpp"
  27 #include "memory/allocation.inline.hpp"
  28 #include "memory/resourceArea.hpp"
  29 #include "runtime/os.hpp"
  30 
  31 CollectorCounters::CollectorCounters(const char* name, int ordinal) {
  32 
  33   if (UsePerfData) {
  34     EXCEPTION_MARK;
  35     ResourceMark rm;
  36 
  37     const char* cns = PerfDataManager::name_space("collector", ordinal);
  38 
  39     _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
  40     strcpy(_name_space, cns);
  41 
  42     char* cname = PerfDataManager::counter_name(_name_space, "name");
  43     PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
  44 
  45     cname = PerfDataManager::counter_name(_name_space, "invocations");
  46     _invocations = PerfDataManager::create_counter(SUN_GC, cname,
  47                                                    PerfData::U_Events, CHECK);
  48 
  49     cname = PerfDataManager::counter_name(_name_space, "time");
  50     _time = PerfDataManager::create_counter(SUN_GC, cname, PerfData::U_Ticks,
  51                                             CHECK);
  52 
  53     cname = PerfDataManager::counter_name(_name_space, "lastEntryTime");
  54     _last_entry_time = PerfDataManager::create_variable(SUN_GC, cname,
  55                                                         PerfData::U_Ticks,
  56                                                         CHECK);
  57 
  58     cname = PerfDataManager::counter_name(_name_space, "lastExitTime");
  59     _last_exit_time = PerfDataManager::create_variable(SUN_GC, cname,
  60                                                        PerfData::U_Ticks,
  61                                                        CHECK);
  62   }
  63 }
  64 
  65 CollectorCounters::~CollectorCounters() {
  66   if (_name_space != NULL) {
  67     FREE_C_HEAP_ARRAY(char, _name_space);
  68   }
  69 }
  70 
  71 TraceCollectorStats::TraceCollectorStats(CollectorCounters* c) :
  72     PerfTraceTimedEvent((c == NULL) ? NULL : c->time_counter(),
  73                         (c == NULL) ? NULL : c->invocation_counter()),
  74     _c(c) {
  75 
  76   if (UsePerfData && (_c != NULL)) {
  77      _c->last_entry_counter()->set_value(os::elapsed_counter());
  78   }
  79 }
  80 
  81 TraceCollectorStats::~TraceCollectorStats() {
  82   if (UsePerfData && (_c != NULL)) {
  83     _c->last_exit_counter()->set_value(os::elapsed_counter());
  84   }
  85 }