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Java example source code file (memReporter.cpp)

This example Java source code file (memReporter.cpp) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bootstrap, just, malloccallsitepointer, membaseline, membaseline\:\:type2name, memflags, mempointerarrayiteratorimpl, memtracker\:\:track_callsite, native, null, number_of_memory_type, ptr_format, sanity, vmcallsitepointer

The memReporter.cpp Java example source code

/*
 * Copyright (c) 2012, 2013, 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 "classfile/systemDictionary.hpp"
#include "runtime/os.hpp"
#include "services/memReporter.hpp"
#include "services/memPtrArray.hpp"
#include "services/memTracker.hpp"

const char* BaselineOutputer::memory_unit(size_t scale) {
  switch(scale) {
    case K: return "KB";
    case M: return "MB";
    case G: return "GB";
  }
  ShouldNotReachHere();
  return NULL;
}


void BaselineReporter::report_baseline(const MemBaseline& baseline, bool summary_only) {
  assert(MemTracker::is_on(), "Native memory tracking is off");
  _outputer.start(scale());
  _outputer.total_usage(
    amount_in_current_scale(baseline.total_malloc_amount() + baseline.total_reserved_amount()),
    amount_in_current_scale(baseline.total_malloc_amount() + baseline.total_committed_amount()));

  _outputer.num_of_classes(baseline.number_of_classes());
  _outputer.num_of_threads(baseline.number_of_threads());

  report_summaries(baseline);
  if (!summary_only && MemTracker::track_callsite()) {
    report_virtual_memory_map(baseline);
    report_callsites(baseline);
  }
  _outputer.done();
}

void BaselineReporter::report_summaries(const MemBaseline& baseline) {
  _outputer.start_category_summary();
  MEMFLAGS type;

  for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
    type = MemBaseline::MemType2NameMap[index]._flag;
    _outputer.category_summary(type,
      amount_in_current_scale(baseline.reserved_amount(type)),
      amount_in_current_scale(baseline.committed_amount(type)),
      amount_in_current_scale(baseline.malloc_amount(type)),
      baseline.malloc_count(type),
      amount_in_current_scale(baseline.arena_amount(type)),
      baseline.arena_count(type));
  }

  _outputer.done_category_summary();
}

void BaselineReporter::report_virtual_memory_map(const MemBaseline& baseline) {
  _outputer.start_virtual_memory_map();
  MemBaseline* pBL = const_cast<MemBaseline*>(&baseline);
  MemPointerArrayIteratorImpl itr = MemPointerArrayIteratorImpl(pBL->_vm_map);
  VMMemRegionEx* rgn = (VMMemRegionEx*)itr.current();
  while (rgn != NULL) {
    if (rgn->is_reserved_region()) {
      _outputer.reserved_memory_region(FLAGS_TO_MEMORY_TYPE(rgn->flags()),
        rgn->base(), rgn->base() + rgn->size(), amount_in_current_scale(rgn->size()), rgn->pc());
    } else {
      _outputer.committed_memory_region(rgn->base(), rgn->base() + rgn->size(),
        amount_in_current_scale(rgn->size()), rgn->pc());
    }
    rgn = (VMMemRegionEx*)itr.next();
  }

  _outputer.done_virtual_memory_map();
}

void BaselineReporter::report_callsites(const MemBaseline& baseline) {
  _outputer.start_callsite();
  MemBaseline* pBL = const_cast<MemBaseline*>(&baseline);

  pBL->_malloc_cs->sort((FN_SORT)MemBaseline::bl_malloc_sort_by_size);
  pBL->_vm_cs->sort((FN_SORT)MemBaseline::bl_vm_sort_by_size);

  // walk malloc callsites
  MemPointerArrayIteratorImpl malloc_itr(pBL->_malloc_cs);
  MallocCallsitePointer*      malloc_callsite =
                  (MallocCallsitePointer*)malloc_itr.current();
  while (malloc_callsite != NULL) {
    _outputer.malloc_callsite(malloc_callsite->addr(),
        amount_in_current_scale(malloc_callsite->amount()), malloc_callsite->count());
    malloc_callsite = (MallocCallsitePointer*)malloc_itr.next();
  }

  // walk virtual memory callsite
  MemPointerArrayIteratorImpl vm_itr(pBL->_vm_cs);
  VMCallsitePointer*          vm_callsite = (VMCallsitePointer*)vm_itr.current();
  while (vm_callsite != NULL) {
    _outputer.virtual_memory_callsite(vm_callsite->addr(),
      amount_in_current_scale(vm_callsite->reserved_amount()),
      amount_in_current_scale(vm_callsite->committed_amount()));
    vm_callsite = (VMCallsitePointer*)vm_itr.next();
  }
  pBL->_malloc_cs->sort((FN_SORT)MemBaseline::bl_malloc_sort_by_pc);
  pBL->_vm_cs->sort((FN_SORT)MemBaseline::bl_vm_sort_by_pc);
  _outputer.done_callsite();
}

void BaselineReporter::diff_baselines(const MemBaseline& cur, const MemBaseline& prev,
  bool summary_only) {
  assert(MemTracker::is_on(), "Native memory tracking is off");
  _outputer.start(scale());
  size_t total_reserved = cur.total_malloc_amount() + cur.total_reserved_amount();
  size_t total_committed = cur.total_malloc_amount() + cur.total_committed_amount();

  _outputer.diff_total_usage(
    amount_in_current_scale(total_reserved), amount_in_current_scale(total_committed),
    diff_in_current_scale(total_reserved,  (prev.total_malloc_amount() + prev.total_reserved_amount())),
    diff_in_current_scale(total_committed, (prev.total_committed_amount() + prev.total_malloc_amount())));

  _outputer.diff_num_of_classes(cur.number_of_classes(),
       diff(cur.number_of_classes(), prev.number_of_classes()));
  _outputer.diff_num_of_threads(cur.number_of_threads(),
       diff(cur.number_of_threads(), prev.number_of_threads()));

  diff_summaries(cur, prev);
  if (!summary_only && MemTracker::track_callsite()) {
    diff_callsites(cur, prev);
  }
  _outputer.done();
}

void BaselineReporter::diff_summaries(const MemBaseline& cur, const MemBaseline& prev) {
  _outputer.start_category_summary();
  MEMFLAGS type;

  for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) {
    type = MemBaseline::MemType2NameMap[index]._flag;
    _outputer.diff_category_summary(type,
      amount_in_current_scale(cur.reserved_amount(type)),
      amount_in_current_scale(cur.committed_amount(type)),
      amount_in_current_scale(cur.malloc_amount(type)),
      cur.malloc_count(type),
      amount_in_current_scale(cur.arena_amount(type)),
      cur.arena_count(type),
      diff_in_current_scale(cur.reserved_amount(type), prev.reserved_amount(type)),
      diff_in_current_scale(cur.committed_amount(type), prev.committed_amount(type)),
      diff_in_current_scale(cur.malloc_amount(type), prev.malloc_amount(type)),
      diff(cur.malloc_count(type), prev.malloc_count(type)),
      diff_in_current_scale(cur.arena_amount(type), prev.arena_amount(type)),
      diff(cur.arena_count(type), prev.arena_count(type)));
  }

  _outputer.done_category_summary();
}

void BaselineReporter::diff_callsites(const MemBaseline& cur, const MemBaseline& prev) {
  _outputer.start_callsite();
  MemBaseline* pBL_cur = const_cast<MemBaseline*>(&cur);
  MemBaseline* pBL_prev = const_cast<MemBaseline*>(&prev);

  // walk malloc callsites
  MemPointerArrayIteratorImpl cur_malloc_itr(pBL_cur->_malloc_cs);
  MemPointerArrayIteratorImpl prev_malloc_itr(pBL_prev->_malloc_cs);

  MallocCallsitePointer*      cur_malloc_callsite =
                  (MallocCallsitePointer*)cur_malloc_itr.current();
  MallocCallsitePointer*      prev_malloc_callsite =
                  (MallocCallsitePointer*)prev_malloc_itr.current();

  while (cur_malloc_callsite != NULL || prev_malloc_callsite != NULL) {
    if (prev_malloc_callsite == NULL) {
      assert(cur_malloc_callsite != NULL, "sanity check");
      // this is a new callsite
      _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(),
        amount_in_current_scale(cur_malloc_callsite->amount()),
        cur_malloc_callsite->count(),
        diff_in_current_scale(cur_malloc_callsite->amount(), 0),
        diff(cur_malloc_callsite->count(), 0));
      cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next();
    } else if (cur_malloc_callsite == NULL) {
      assert(prev_malloc_callsite != NULL, "Sanity check");
      // this callsite is already gone
      _outputer.diff_malloc_callsite(prev_malloc_callsite->addr(),
        0, 0,
        diff_in_current_scale(0, prev_malloc_callsite->amount()),
        diff(0, prev_malloc_callsite->count()));
      prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next();
    } else {
      assert(cur_malloc_callsite  != NULL,  "Sanity check");
      assert(prev_malloc_callsite != NULL,  "Sanity check");
      if (cur_malloc_callsite->addr() < prev_malloc_callsite->addr()) {
        // this is a new callsite
        _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(),
          amount_in_current_scale(cur_malloc_callsite->amount()),
          cur_malloc_callsite->count(),
          diff_in_current_scale(cur_malloc_callsite->amount(), 0),
          diff(cur_malloc_callsite->count(), 0));
          cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next();
      } else if (cur_malloc_callsite->addr() > prev_malloc_callsite->addr()) {
        // this callsite is already gone
        _outputer.diff_malloc_callsite(prev_malloc_callsite->addr(),
          0, 0,
          diff_in_current_scale(0, prev_malloc_callsite->amount()),
          diff(0, prev_malloc_callsite->count()));
        prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next();
      } else {
        // the same callsite
        _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(),
          amount_in_current_scale(cur_malloc_callsite->amount()),
          cur_malloc_callsite->count(),
          diff_in_current_scale(cur_malloc_callsite->amount(), prev_malloc_callsite->amount()),
          diff(cur_malloc_callsite->count(), prev_malloc_callsite->count()));
        cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next();
        prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next();
      }
    }
  }

  // walk virtual memory callsite
  MemPointerArrayIteratorImpl cur_vm_itr(pBL_cur->_vm_cs);
  MemPointerArrayIteratorImpl prev_vm_itr(pBL_prev->_vm_cs);
  VMCallsitePointer*          cur_vm_callsite = (VMCallsitePointer*)cur_vm_itr.current();
  VMCallsitePointer*          prev_vm_callsite = (VMCallsitePointer*)prev_vm_itr.current();
  while (cur_vm_callsite != NULL || prev_vm_callsite != NULL) {
    if (prev_vm_callsite == NULL || cur_vm_callsite->addr() < prev_vm_callsite->addr()) {
      // this is a new callsite
      _outputer.diff_virtual_memory_callsite(cur_vm_callsite->addr(),
        amount_in_current_scale(cur_vm_callsite->reserved_amount()),
        amount_in_current_scale(cur_vm_callsite->committed_amount()),
        diff_in_current_scale(cur_vm_callsite->reserved_amount(), 0),
        diff_in_current_scale(cur_vm_callsite->committed_amount(), 0));
      cur_vm_callsite = (VMCallsitePointer*)cur_vm_itr.next();
    } else if (cur_vm_callsite == NULL || cur_vm_callsite->addr() > prev_vm_callsite->addr()) {
      // this callsite is already gone
      _outputer.diff_virtual_memory_callsite(prev_vm_callsite->addr(),
        amount_in_current_scale(0),
        amount_in_current_scale(0),
        diff_in_current_scale(0, prev_vm_callsite->reserved_amount()),
        diff_in_current_scale(0, prev_vm_callsite->committed_amount()));
      prev_vm_callsite = (VMCallsitePointer*)prev_vm_itr.next();
    } else { // the same callsite
      _outputer.diff_virtual_memory_callsite(cur_vm_callsite->addr(),
        amount_in_current_scale(cur_vm_callsite->reserved_amount()),
        amount_in_current_scale(cur_vm_callsite->committed_amount()),
        diff_in_current_scale(cur_vm_callsite->reserved_amount(), prev_vm_callsite->reserved_amount()),
        diff_in_current_scale(cur_vm_callsite->committed_amount(), prev_vm_callsite->committed_amount()));
      cur_vm_callsite  = (VMCallsitePointer*)cur_vm_itr.next();
      prev_vm_callsite = (VMCallsitePointer*)prev_vm_itr.next();
    }
  }

  _outputer.done_callsite();
}

size_t BaselineReporter::amount_in_current_scale(size_t amt) const {
  return (size_t)(((float)amt/(float)_scale) + 0.5);
}

int BaselineReporter::diff_in_current_scale(size_t value1, size_t value2) const {
  return (int)(((float)value1 - (float)value2)/((float)_scale) + 0.5);
}

int BaselineReporter::diff(size_t value1, size_t value2) const {
  return ((int)value1 - (int)value2);
}

void BaselineTTYOutputer::start(size_t scale, bool report_diff) {
  _scale = scale;
  _output->print_cr(" ");
  _output->print_cr("Native Memory Tracking:");
  _output->print_cr(" ");
}

void BaselineTTYOutputer::done() {

}

void BaselineTTYOutputer::total_usage(size_t total_reserved, size_t total_committed) {
  const char* unit = memory_unit(_scale);
  _output->print_cr("Total:  reserved=%d%s,  committed=%d%s",
    total_reserved, unit, total_committed, unit);
}

void BaselineTTYOutputer::start_category_summary() {
  _output->print_cr(" ");
}

/**
 * report a summary of memory type
 */
void BaselineTTYOutputer::category_summary(MEMFLAGS type,
  size_t reserved_amt, size_t committed_amt, size_t malloc_amt,
  size_t malloc_count, size_t arena_amt, size_t arena_count) {

  // we report mtThreadStack under mtThread category
  if (type == mtThreadStack) {
    assert(malloc_amt == 0 && malloc_count == 0 && arena_amt == 0,
      "Just check");
    _thread_stack_reserved = reserved_amt;
    _thread_stack_committed = committed_amt;
  } else {
    const char* unit = memory_unit(_scale);
    size_t total_reserved = (reserved_amt + malloc_amt + arena_amt);
    size_t total_committed = (committed_amt + malloc_amt + arena_amt);
    if (type == mtThread) {
      total_reserved += _thread_stack_reserved;
      total_committed += _thread_stack_committed;
    }

    if (total_reserved > 0) {
      _output->print_cr("-%26s (reserved=%d%s, committed=%d%s)",
        MemBaseline::type2name(type), total_reserved, unit,
        total_committed, unit);

      if (type == mtClass) {
        _output->print_cr("%27s (classes #%d)", " ", _num_of_classes);
      } else if (type == mtThread) {
        _output->print_cr("%27s (thread #%d)", " ", _num_of_threads);
        _output->print_cr("%27s (stack: reserved=%d%s, committed=%d%s)", " ",
          _thread_stack_reserved, unit, _thread_stack_committed, unit);
      }

      if (malloc_amt > 0) {
        if (type != mtChunk) {
          _output->print_cr("%27s (malloc=%d%s, #%d)", " ", malloc_amt, unit,
            malloc_count);
        } else {
          _output->print_cr("%27s (malloc=%d%s)", " ", malloc_amt, unit);
        }
      }

      if (reserved_amt > 0) {
        _output->print_cr("%27s (mmap: reserved=%d%s, committed=%d%s)",
          " ", reserved_amt, unit, committed_amt, unit);
      }

      if (arena_amt > 0) {
        _output->print_cr("%27s (arena=%d%s, #%d)", " ", arena_amt, unit, arena_count);
      }

      _output->print_cr(" ");
    }
  }
}

void BaselineTTYOutputer::done_category_summary() {
  _output->print_cr(" ");
}


void BaselineTTYOutputer::start_virtual_memory_map() {
  _output->print_cr("Virtual memory map:");
}

void BaselineTTYOutputer::reserved_memory_region(MEMFLAGS type, address base, address end,
                                                 size_t size, address pc) {
  const char* unit = memory_unit(_scale);
  char buf[128];
  int  offset;
  _output->print_cr(" ");
  _output->print_cr("[" PTR_FORMAT " - " PTR_FORMAT "] reserved %d%s for %s", base, end, size, unit,
            MemBaseline::type2name(type));
  if (os::dll_address_to_function_name(pc, buf, sizeof(buf), &offset)) {
      _output->print_cr("\t\tfrom [%s+0x%x]", buf, offset);
  }
}

void BaselineTTYOutputer::committed_memory_region(address base, address end, size_t size, address pc) {
  const char* unit = memory_unit(_scale);
  char buf[128];
  int  offset;
  _output->print("\t[" PTR_FORMAT " - " PTR_FORMAT "] committed %d%s", base, end, size, unit);
  if (os::dll_address_to_function_name(pc, buf, sizeof(buf), &offset)) {
      _output->print_cr(" from [%s+0x%x]", buf, offset);
  }
}

void BaselineTTYOutputer::done_virtual_memory_map() {
  _output->print_cr(" ");
}



void BaselineTTYOutputer::start_callsite() {
  _output->print_cr("Details:");
  _output->print_cr(" ");
}

void BaselineTTYOutputer::done_callsite() {
  _output->print_cr(" ");
}

void BaselineTTYOutputer::malloc_callsite(address pc, size_t malloc_amt,
  size_t malloc_count) {
  if (malloc_amt > 0) {
    const char* unit = memory_unit(_scale);
    char buf[128];
    int  offset;
    if (pc == 0) {
      _output->print("[BOOTSTRAP]%18s", " ");
    } else if (os::dll_address_to_function_name(pc, buf, sizeof(buf), &offset)) {
      _output->print_cr("[" PTR_FORMAT "] %s+0x%x", pc, buf, offset);
      _output->print("%28s", " ");
    } else {
      _output->print("[" PTR_FORMAT "]%18s", pc, " ");
    }

    _output->print_cr("(malloc=%d%s #%d)", malloc_amt, unit, malloc_count);
    _output->print_cr(" ");
  }
}

void BaselineTTYOutputer::virtual_memory_callsite(address pc, size_t reserved_amt,
  size_t committed_amt) {
  if (reserved_amt > 0) {
    const char* unit = memory_unit(_scale);
    char buf[128];
    int  offset;
    if (pc == 0) {
      _output->print("[BOOTSTRAP]%18s", " ");
    } else if (os::dll_address_to_function_name(pc, buf, sizeof(buf), &offset)) {
      _output->print_cr("[" PTR_FORMAT "] %s+0x%x", pc, buf, offset);
      _output->print("%28s", " ");
    } else {
      _output->print("[" PTR_FORMAT "]%18s", pc, " ");
    }

    _output->print_cr("(mmap: reserved=%d%s, committed=%d%s)",
      reserved_amt, unit, committed_amt, unit);
    _output->print_cr(" ");
  }
}

void BaselineTTYOutputer::diff_total_usage(size_t total_reserved,
  size_t total_committed, int reserved_diff, int committed_diff) {
  const char* unit = memory_unit(_scale);
  _output->print_cr("Total:  reserved=%d%s  %+d%s, committed=%d%s %+d%s",
    total_reserved, unit, reserved_diff, unit, total_committed, unit,
    committed_diff, unit);
}

void BaselineTTYOutputer::diff_category_summary(MEMFLAGS type,
  size_t cur_reserved_amt, size_t cur_committed_amt,
  size_t cur_malloc_amt, size_t cur_malloc_count,
  size_t cur_arena_amt, size_t cur_arena_count,
  int reserved_diff, int committed_diff, int malloc_diff,
  int malloc_count_diff, int arena_diff, int arena_count_diff) {

  if (type == mtThreadStack) {
    assert(cur_malloc_amt == 0 && cur_malloc_count == 0 &&
      cur_arena_amt == 0, "Just check");
    _thread_stack_reserved = cur_reserved_amt;
    _thread_stack_committed = cur_committed_amt;
    _thread_stack_reserved_diff = reserved_diff;
    _thread_stack_committed_diff = committed_diff;
  } else {
    const char* unit = memory_unit(_scale);
    size_t total_reserved = (cur_reserved_amt + cur_malloc_amt + cur_arena_amt);
    // nothing to report in this category
    if (total_reserved == 0) {
      return;
    }
    int    diff_reserved = (reserved_diff + malloc_diff + arena_diff);

    // category summary
    _output->print("-%26s (reserved=%d%s", MemBaseline::type2name(type),
      total_reserved, unit);

    if (diff_reserved != 0) {
      _output->print(" %+d%s", diff_reserved, unit);
    }

    size_t total_committed = cur_committed_amt + cur_malloc_amt + cur_arena_amt;
    _output->print(", committed=%d%s", total_committed, unit);

    int total_committed_diff = committed_diff + malloc_diff + arena_diff;
    if (total_committed_diff != 0) {
      _output->print(" %+d%s", total_committed_diff, unit);
    }

    _output->print_cr(")");

    // special cases
    if (type == mtClass) {
      _output->print("%27s (classes #%d", " ", _num_of_classes);
      if (_num_of_classes_diff != 0) {
        _output->print(" %+d", _num_of_classes_diff);
      }
      _output->print_cr(")");
    } else if (type == mtThread) {
      // thread count
      _output->print("%27s (thread #%d", " ", _num_of_threads);
      if (_num_of_threads_diff != 0) {
        _output->print_cr(" %+d)", _num_of_threads_diff);
      } else {
        _output->print_cr(")");
      }
      _output->print("%27s (stack: reserved=%d%s", " ", _thread_stack_reserved, unit);
      if (_thread_stack_reserved_diff != 0) {
        _output->print(" %+d%s", _thread_stack_reserved_diff, unit);
      }

      _output->print(", committed=%d%s", _thread_stack_committed, unit);
      if (_thread_stack_committed_diff != 0) {
        _output->print(" %+d%s",_thread_stack_committed_diff, unit);
      }

      _output->print_cr(")");
    }

    // malloc'd memory
    if (cur_malloc_amt > 0) {
      _output->print("%27s (malloc=%d%s", " ", cur_malloc_amt, unit);
      if (malloc_diff != 0) {
        _output->print(" %+d%s", malloc_diff, unit);
      }
      if (type != mtChunk) {
        _output->print(", #%d", cur_malloc_count);
        if (malloc_count_diff) {
          _output->print(" %+d", malloc_count_diff);
        }
      }
      _output->print_cr(")");
    }

    // mmap'd memory
    if (cur_reserved_amt > 0) {
      _output->print("%27s (mmap: reserved=%d%s", " ", cur_reserved_amt, unit);
      if (reserved_diff != 0) {
        _output->print(" %+d%s", reserved_diff, unit);
      }

      _output->print(", committed=%d%s", cur_committed_amt, unit);
      if (committed_diff != 0) {
        _output->print(" %+d%s", committed_diff, unit);
      }
      _output->print_cr(")");
    }

    // arena memory
    if (cur_arena_amt > 0) {
      _output->print("%27s (arena=%d%s", " ", cur_arena_amt, unit);
      if (arena_diff != 0) {
        _output->print(" %+d%s", arena_diff, unit);
      }
      _output->print(", #%d", cur_arena_count);
      if (arena_count_diff != 0) {
        _output->print(" %+d", arena_count_diff);
      }
      _output->print_cr(")");
    }

    _output->print_cr(" ");
  }
}

void BaselineTTYOutputer::diff_malloc_callsite(address pc,
    size_t cur_malloc_amt, size_t cur_malloc_count,
    int malloc_diff, int malloc_count_diff) {
  if (malloc_diff != 0) {
    const char* unit = memory_unit(_scale);
    char buf[128];
    int  offset;
    if (pc == 0) {
      _output->print_cr("[BOOTSTRAP]%18s", " ");
    } else {
      if (os::dll_address_to_function_name(pc, buf, sizeof(buf), &offset)) {
        _output->print_cr("[" PTR_FORMAT "] %s+0x%x", pc, buf, offset);
        _output->print("%28s", " ");
      } else {
        _output->print("[" PTR_FORMAT "]%18s", pc, " ");
      }
    }

    _output->print("(malloc=%d%s", cur_malloc_amt, unit);
    if (malloc_diff != 0) {
      _output->print(" %+d%s", malloc_diff, unit);
    }
    _output->print(", #%d", cur_malloc_count);
    if (malloc_count_diff != 0) {
      _output->print(" %+d", malloc_count_diff);
    }
    _output->print_cr(")");
    _output->print_cr(" ");
  }
}

void BaselineTTYOutputer::diff_virtual_memory_callsite(address pc,
    size_t cur_reserved_amt, size_t cur_committed_amt,
    int reserved_diff, int committed_diff) {
  if (reserved_diff != 0 || committed_diff != 0) {
    const char* unit = memory_unit(_scale);
    char buf[64];
    int  offset;
    if (pc == 0) {
      _output->print_cr("[BOOSTRAP]%18s", " ");
    } else {
      if (os::dll_address_to_function_name(pc, buf, sizeof(buf), &offset)) {
        _output->print_cr("[" PTR_FORMAT "] %s+0x%x", pc, buf, offset);
        _output->print("%28s", " ");
      } else {
        _output->print("[" PTR_FORMAT "]%18s", pc, " ");
      }
    }

    _output->print("(mmap: reserved=%d%s", cur_reserved_amt, unit);
    if (reserved_diff != 0) {
      _output->print(" %+d%s", reserved_diff, unit);
    }
    _output->print(", committed=%d%s", cur_committed_amt, unit);
    if (committed_diff != 0) {
      _output->print(" %+d%s", committed_diff, unit);
    }
    _output->print_cr(")");
    _output->print_cr(" ");
  }
}

Other Java examples (source code examples)

Here is a short list of links related to this Java memReporter.cpp source code file:

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