hotspot/src/share/vm/runtime/memprofiler.cpp
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7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
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/*
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 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "code/codeCache.hpp"
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#include "gc_interface/collectedHeap.inline.hpp"
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#include "interpreter/oopMapCache.hpp"
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#include "memory/generation.hpp"
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#include "memory/permGen.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/jniHandles.hpp"
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#include "runtime/memprofiler.hpp"
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#include "runtime/mutexLocker.hpp"
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#include "runtime/os.hpp"
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#include "runtime/task.hpp"
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#include "runtime/vmThread.hpp"
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#ifdef TARGET_OS_FAMILY_linux
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# include "thread_linux.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_solaris
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# include "thread_solaris.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_windows
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# include "thread_windows.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_bsd
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# include "thread_bsd.inline.hpp"
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#endif
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#ifndef PRODUCT
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// --------------------------------------------------------
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// MemProfilerTask
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class MemProfilerTask : public PeriodicTask {
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 public:
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  MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
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  void task();
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};
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void MemProfilerTask::task() {
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  // Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
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  MutexLocker mu(Threads_lock);
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  MemProfiler::do_trace();
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}
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//----------------------------------------------------------
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// Implementation of MemProfiler
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MemProfilerTask* MemProfiler::_task   = NULL;
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FILE*            MemProfiler::_log_fp = NULL;
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bool MemProfiler::is_active() {
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  return _task != NULL;
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}
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void MemProfiler::engage() {
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  const char *log_name = "mprofile.log";
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  if (!is_active()) {
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    // Create log file
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    _log_fp = fopen(log_name , "w+");
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    if (_log_fp == NULL) {
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      fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name));
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    }
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    fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
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    fprintf(_log_fp, "  time, #thr, #cls,  heap,  heap,  perm,  perm,  code, hndls, rescs, oopmp\n");
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    fprintf(_log_fp, "                     used, total,  used, total, total, total, total, total\n");
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    fprintf(_log_fp, "--------------------------------------------------------------------------\n");
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    _task = new MemProfilerTask(MemProfilingInterval);
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    _task->enroll();
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  }
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}
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void MemProfiler::disengage() {
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  if (!is_active()) return;
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  // Do one last trace at disengage time
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  do_trace();
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  // Close logfile
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  fprintf(_log_fp, "MemProfiler detached\n");
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  fclose(_log_fp);
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  // remove MemProfilerTask
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  assert(_task != NULL, "sanity check");
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  _task->disenroll();
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  delete _task;
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  _task = NULL;
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}
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void MemProfiler::do_trace() {
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  // Calculate thread local sizes
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  size_t handles_memory_usage    = VMThread::vm_thread()->handle_area()->size_in_bytes();
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  size_t resource_memory_usage   = VMThread::vm_thread()->resource_area()->size_in_bytes();
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  JavaThread *cur = Threads::first();
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  while (cur != NULL) {
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    handles_memory_usage  += cur->handle_area()->size_in_bytes();
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    resource_memory_usage += cur->resource_area()->size_in_bytes();
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    cur = cur->next();
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  }
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  // Print trace line in log
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  fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ","
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          UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
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          os::elapsedTime(),
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          Threads::number_of_threads(),
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          SystemDictionary::number_of_classes(),
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          Universe::heap()->used() / K,
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          Universe::heap()->capacity() / K,
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          Universe::heap()->permanent_used() / HWperKB,
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          Universe::heap()->permanent_capacity() / HWperKB);
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  fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
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  fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
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          handles_memory_usage / K,
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          resource_memory_usage / K,
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          OopMapCache::memory_usage() / K);
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  fflush(_log_fp);
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}
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#endif