diff -r c8aa7a0bf7d0 -r 100a882dcffa hotspot/src/share/vm/services/memRecorder.cpp --- a/hotspot/src/share/vm/services/memRecorder.cpp Fri Aug 08 16:24:16 2014 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,171 +0,0 @@ -/* - * 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 "runtime/atomic.inline.hpp" -#include "services/memBaseline.hpp" -#include "services/memRecorder.hpp" -#include "services/memPtr.hpp" -#include "services/memTracker.hpp" - -MemPointer* SequencedRecordIterator::next_record() { - MemPointerRecord* itr_cur = (MemPointerRecord*)_itr.current(); - if (itr_cur == NULL) { - return itr_cur; - } - - MemPointerRecord* itr_next = (MemPointerRecord*)_itr.next(); - - // don't collapse virtual memory records - while (itr_next != NULL && !itr_cur->is_vm_pointer() && - !itr_next->is_vm_pointer() && - same_kind(itr_cur, itr_next)) { - itr_cur = itr_next; - itr_next = (MemPointerRecord*)_itr.next(); - } - - return itr_cur; -} - - -volatile jint MemRecorder::_instance_count = 0; - -MemRecorder::MemRecorder() { - assert(MemTracker::is_on(), "Native memory tracking is off"); - Atomic::inc(&_instance_count); - set_generation(); - - if (MemTracker::track_callsite()) { - _pointer_records = new (std::nothrow)FixedSizeMemPointerArray(); - } else { - _pointer_records = new (std::nothrow)FixedSizeMemPointerArray(); - } - _next = NULL; - - - if (_pointer_records != NULL) { - // recode itself - address pc = CURRENT_PC; - record((address)this, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder), - sizeof(MemRecorder), SequenceGenerator::next(), pc); - record((address)_pointer_records, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder), - _pointer_records->instance_size(), SequenceGenerator::next(), pc); - } -} - -MemRecorder::~MemRecorder() { - if (_pointer_records != NULL) { - if (MemTracker::is_on()) { - MemTracker::record_free((address)_pointer_records, mtNMT); - MemTracker::record_free((address)this, mtNMT); - } - delete _pointer_records; - } - // delete all linked recorders - while (_next != NULL) { - MemRecorder* tmp = _next; - _next = _next->next(); - tmp->set_next(NULL); - delete tmp; - } - Atomic::dec(&_instance_count); -} - -// Sorting order: -// 1. memory block address -// 2. mem pointer record tags -// 3. sequence number -int MemRecorder::sort_record_fn(const void* e1, const void* e2) { - const MemPointerRecord* p1 = (const MemPointerRecord*)e1; - const MemPointerRecord* p2 = (const MemPointerRecord*)e2; - int delta = UNSIGNED_COMPARE(p1->addr(), p2->addr()); - if (delta == 0) { - int df = UNSIGNED_COMPARE((p1->flags() & MemPointerRecord::tag_masks), - (p2->flags() & MemPointerRecord::tag_masks)); - if (df == 0) { - assert(p1->seq() != p2->seq(), "dup seq"); - return p1->seq() - p2->seq(); - } else { - return df; - } - } else { - return delta; - } -} - -bool MemRecorder::record(address p, MEMFLAGS flags, size_t size, jint seq, address pc) { - assert(seq > 0, "No sequence number"); -#ifdef ASSERT - if (MemPointerRecord::is_virtual_memory_record(flags)) { - assert((flags & MemPointerRecord::tag_masks) != 0, "bad virtual memory record"); - } else { - assert((flags & MemPointerRecord::tag_masks) == MemPointerRecord::malloc_tag() || - (flags & MemPointerRecord::tag_masks) == MemPointerRecord::free_tag() || - IS_ARENA_OBJ(flags), - "bad malloc record"); - } - // a recorder should only hold records within the same generation - unsigned long cur_generation = SequenceGenerator::current_generation(); - assert(cur_generation == _generation, - "this thread did not enter sync point"); -#endif - - if (MemTracker::track_callsite()) { - SeqMemPointerRecordEx ap(p, flags, size, seq, pc); - debug_only(check_dup_seq(ap.seq());) - return _pointer_records->append(&ap); - } else { - SeqMemPointerRecord ap(p, flags, size, seq); - debug_only(check_dup_seq(ap.seq());) - return _pointer_records->append(&ap); - } -} - - // iterator for alloc pointers -SequencedRecordIterator MemRecorder::pointer_itr() { - assert(_pointer_records != NULL, "just check"); - _pointer_records->sort((FN_SORT)sort_record_fn); - return SequencedRecordIterator(_pointer_records); -} - - -void MemRecorder::set_generation() { - _generation = SequenceGenerator::current_generation(); -} - -#ifdef ASSERT - -void MemRecorder::check_dup_seq(jint seq) const { - MemPointerArrayIteratorImpl itr(_pointer_records); - MemPointerRecord* rc = (MemPointerRecord*)itr.current(); - while (rc != NULL) { - assert(rc->seq() != seq, "dup seq"); - rc = (MemPointerRecord*)itr.next(); - } -} - -#endif