--- a/hotspot/src/share/vm/services/memRecorder.hpp Thu Aug 28 14:54:07 2014 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,271 +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.
- *
- */
-
-#ifndef SHARE_VM_SERVICES_MEM_RECORDER_HPP
-#define SHARE_VM_SERVICES_MEM_RECORDER_HPP
-
-#include "memory/allocation.hpp"
-#include "runtime/os.hpp"
-#include "services/memPtrArray.hpp"
-
-class MemSnapshot;
-class MemTracker;
-class MemTrackWorker;
-
-// Fixed size memory pointer array implementation
-template <class E, int SIZE> class FixedSizeMemPointerArray :
- public MemPointerArray {
- // This implementation is for memory recorder only
- friend class MemRecorder;
-
- private:
- E _data[SIZE];
- int _size;
-
- protected:
- FixedSizeMemPointerArray(bool init_elements = false):
- _size(0){
- if (init_elements) {
- for (int index = 0; index < SIZE; index ++) {
- ::new ((void*)&_data[index]) E();
- }
- }
- }
-
- void* operator new(size_t size, const std::nothrow_t& nothrow_constant) throw() {
- // the instance is part of memRecorder, needs to be tagged with 'otNMTRecorder'
- // to avoid recursion
- return os::malloc(size, (mtNMT | otNMTRecorder));
- }
-
- void* operator new(size_t size) throw() {
- assert(false, "use nothrow version");
- return NULL;
- }
-
- void operator delete(void* p) {
- os::free(p, (mtNMT | otNMTRecorder));
- }
-
- // instance size
- inline size_t instance_size() const {
- return sizeof(FixedSizeMemPointerArray<E, SIZE>);
- }
-
- NOT_PRODUCT(int capacity() const { return SIZE; })
-
- public:
- // implementation of public interface
- bool out_of_memory() const { return false; }
- bool is_empty() const { return _size == 0; }
- bool is_full() { return length() >= SIZE; }
- int length() const { return _size; }
-
- void clear() {
- _size = 0;
- }
-
- bool append(MemPointer* ptr) {
- if (is_full()) return false;
- _data[_size ++] = *(E*)ptr;
- return true;
- }
-
- virtual bool insert_at(MemPointer* p, int pos) {
- assert(false, "append only");
- return false;
- }
-
- virtual bool remove_at(int pos) {
- assert(false, "not supported");
- return false;
- }
-
- MemPointer* at(int index) const {
- assert(index >= 0 && index < length(),
- "parameter check");
- return ((E*)&_data[index]);
- }
-
- void sort(FN_SORT fn) {
- qsort((void*)_data, _size, sizeof(E), fn);
- }
-
- bool shrink() {
- return false;
- }
-};
-
-
-// This iterator requires pre-sorted MemPointerArray, which is sorted by:
-// 1. address
-// 2. allocation type
-// 3. sequence number
-// During the array walking, iterator collapses pointers with the same
-// address and allocation type, and only returns the one with highest
-// sequence number.
-//
-// This is read-only iterator, update methods are asserted.
-class SequencedRecordIterator : public MemPointerArrayIterator {
- private:
- MemPointerArrayIteratorImpl _itr;
- MemPointer* _cur;
-
- public:
- SequencedRecordIterator(const MemPointerArray* arr):
- _itr(const_cast<MemPointerArray*>(arr)) {
- _cur = next_record();
- }
-
- SequencedRecordIterator(const SequencedRecordIterator& itr):
- _itr(itr._itr) {
- _cur = next_record();
- }
-
- // return the pointer at current position
- virtual MemPointer* current() const {
- return _cur;
- };
-
- // return the next pointer and advance current position
- virtual MemPointer* next() {
- _cur = next_record();
- return _cur;
- }
-
- // return the next pointer without advancing current position
- virtual MemPointer* peek_next() const {
- assert(false, "not implemented");
- return NULL;
-
- }
- // return the previous pointer without changing current position
- virtual MemPointer* peek_prev() const {
- assert(false, "not implemented");
- return NULL;
- }
-
- // remove the pointer at current position
- virtual void remove() {
- assert(false, "read-only iterator");
- };
- // insert the pointer at current position
- virtual bool insert(MemPointer* ptr) {
- assert(false, "read-only iterator");
- return false;
- }
-
- virtual bool insert_after(MemPointer* ptr) {
- assert(false, "read-only iterator");
- return false;
- }
- private:
- // collapse the 'same kind' of records, and return this 'kind' of
- // record with highest sequence number
- MemPointer* next_record();
-
- // Test if the two records are the same kind: the same memory block and allocation
- // type.
- inline bool same_kind(const MemPointerRecord* p1, const MemPointerRecord* p2) const {
- assert(!p1->is_vm_pointer() && !p2->is_vm_pointer(), "malloc pointer only");
- return (p1->addr() == p2->addr() &&
- (p1->flags() &MemPointerRecord::tag_masks) ==
- (p2->flags() & MemPointerRecord::tag_masks));
- }
-};
-
-
-
-#define DEFAULT_RECORDER_PTR_ARRAY_SIZE 512
-
-class MemRecorder : public CHeapObj<mtNMT|otNMTRecorder> {
- friend class MemSnapshot;
- friend class MemTracker;
- friend class MemTrackWorker;
- friend class GenerationData;
-
- protected:
- // the array that holds memory records
- MemPointerArray* _pointer_records;
-
- private:
- // used for linked list
- MemRecorder* _next;
- // active recorder can only record a certain generation data
- unsigned long _generation;
-
- protected:
- _NOINLINE_ MemRecorder();
- ~MemRecorder();
-
- // record a memory operation
- bool record(address addr, MEMFLAGS flags, size_t size, jint seq, address caller_pc = 0);
-
- // linked list support
- inline void set_next(MemRecorder* rec) {
- _next = rec;
- }
-
- inline MemRecorder* next() const {
- return _next;
- }
-
- // if the recorder is full
- inline bool is_full() const {
- assert(_pointer_records != NULL, "just check");
- return _pointer_records->is_full();
- }
-
- // if running out of memory when initializing recorder's internal
- // data
- inline bool out_of_memory() const {
- return (_pointer_records == NULL ||
- _pointer_records->out_of_memory());
- }
-
- inline void clear() {
- assert(_pointer_records != NULL, "Just check");
- _pointer_records->clear();
- }
-
- SequencedRecordIterator pointer_itr();
-
- // return the generation of this recorder which it belongs to
- unsigned long get_generation() const { return _generation; }
- protected:
- // number of MemRecorder instance
- static volatile jint _instance_count;
-
- private:
- // sorting function, sort records into following order
- // 1. memory address
- // 2. allocation type
- // 3. sequence number
- static int sort_record_fn(const void* e1, const void* e2);
-
- debug_only(void check_dup_seq(jint seq) const;)
- void set_generation();
-};
-
-#endif // SHARE_VM_SERVICES_MEM_RECORDER_HPP