diff -r c8aa7a0bf7d0 -r 100a882dcffa hotspot/src/share/vm/services/memSnapshot.cpp --- a/hotspot/src/share/vm/services/memSnapshot.cpp Fri Aug 08 16:24:16 2014 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,748 +0,0 @@ -/* - * Copyright (c) 2012, 2014, 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/mutexLocker.hpp" -#include "utilities/decoder.hpp" -#include "services/memBaseline.hpp" -#include "services/memPtr.hpp" -#include "services/memPtrArray.hpp" -#include "services/memSnapshot.hpp" -#include "services/memTracker.hpp" - -PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC - -#ifdef ASSERT - -void decode_pointer_record(MemPointerRecord* rec) { - tty->print("Pointer: [" PTR_FORMAT " - " PTR_FORMAT "] size = %d bytes", rec->addr(), - rec->addr() + rec->size(), (int)rec->size()); - tty->print(" type = %s", MemBaseline::type2name(FLAGS_TO_MEMORY_TYPE(rec->flags()))); - if (rec->is_vm_pointer()) { - if (rec->is_allocation_record()) { - tty->print_cr(" (reserve)"); - } else if (rec->is_commit_record()) { - tty->print_cr(" (commit)"); - } else if (rec->is_uncommit_record()) { - tty->print_cr(" (uncommit)"); - } else if (rec->is_deallocation_record()) { - tty->print_cr(" (release)"); - } else { - tty->print_cr(" (tag)"); - } - } else { - if (rec->is_arena_memory_record()) { - tty->print_cr(" (arena size)"); - } else if (rec->is_allocation_record()) { - tty->print_cr(" (malloc)"); - } else { - tty->print_cr(" (free)"); - } - } - if (MemTracker::track_callsite()) { - char buf[1024]; - address pc = ((MemPointerRecordEx*)rec)->pc(); - if (pc != NULL && os::dll_address_to_function_name(pc, buf, sizeof(buf), NULL)) { - tty->print_cr("\tfrom %s", buf); - } else { - tty->print_cr("\tcould not decode pc = " PTR_FORMAT "", pc); - } - } -} - -void decode_vm_region_record(VMMemRegion* rec) { - tty->print("VM Region [" PTR_FORMAT " - " PTR_FORMAT "]", rec->addr(), - rec->addr() + rec->size()); - tty->print(" type = %s", MemBaseline::type2name(FLAGS_TO_MEMORY_TYPE(rec->flags()))); - if (rec->is_allocation_record()) { - tty->print_cr(" (reserved)"); - } else if (rec->is_commit_record()) { - tty->print_cr(" (committed)"); - } else { - ShouldNotReachHere(); - } - if (MemTracker::track_callsite()) { - char buf[1024]; - address pc = ((VMMemRegionEx*)rec)->pc(); - if (pc != NULL && os::dll_address_to_function_name(pc, buf, sizeof(buf), NULL)) { - tty->print_cr("\tfrom %s", buf); - } else { - tty->print_cr("\tcould not decode pc = " PTR_FORMAT "", pc); - } - - } -} - -#endif - - -bool VMMemPointerIterator::insert_record(MemPointerRecord* rec) { - VMMemRegionEx new_rec; - assert(rec->is_allocation_record() || rec->is_commit_record(), - "Sanity check"); - if (MemTracker::track_callsite()) { - new_rec.init((MemPointerRecordEx*)rec); - } else { - new_rec.init(rec); - } - return insert(&new_rec); -} - -bool VMMemPointerIterator::insert_record_after(MemPointerRecord* rec) { - VMMemRegionEx new_rec; - assert(rec->is_allocation_record() || rec->is_commit_record(), - "Sanity check"); - if (MemTracker::track_callsite()) { - new_rec.init((MemPointerRecordEx*)rec); - } else { - new_rec.init(rec); - } - return insert_after(&new_rec); -} - -// we don't consolidate reserved regions, since they may be categorized -// in different types. -bool VMMemPointerIterator::add_reserved_region(MemPointerRecord* rec) { - assert(rec->is_allocation_record(), "Sanity check"); - VMMemRegion* reserved_region = (VMMemRegion*)current(); - - // we don't have anything yet - if (reserved_region == NULL) { - return insert_record(rec); - } - - assert(reserved_region->is_reserved_region(), "Sanity check"); - // duplicated records - if (reserved_region->is_same_region(rec)) { - return true; - } - // Overlapping stack regions indicate that a JNI thread failed to - // detach from the VM before exiting. This leaks the JavaThread object. - if (CheckJNICalls) { - guarantee(FLAGS_TO_MEMORY_TYPE(reserved_region->flags()) != mtThreadStack || - !reserved_region->overlaps_region(rec), - "Attached JNI thread exited without being detached"); - } - // otherwise, we should not have overlapping reserved regions - assert(FLAGS_TO_MEMORY_TYPE(reserved_region->flags()) == mtThreadStack || - reserved_region->base() > rec->addr(), "Just check: locate()"); - assert(FLAGS_TO_MEMORY_TYPE(reserved_region->flags()) == mtThreadStack || - !reserved_region->overlaps_region(rec), "overlapping reserved regions"); - - return insert_record(rec); -} - -// we do consolidate committed regions -bool VMMemPointerIterator::add_committed_region(MemPointerRecord* rec) { - assert(rec->is_commit_record(), "Sanity check"); - VMMemRegion* reserved_rgn = (VMMemRegion*)current(); - assert(reserved_rgn->is_reserved_region() && reserved_rgn->contains_region(rec), - "Sanity check"); - - // thread's native stack is always marked as "committed", ignore - // the "commit" operation for creating stack guard pages - if (FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) == mtThreadStack && - FLAGS_TO_MEMORY_TYPE(rec->flags()) != mtThreadStack) { - return true; - } - - // if the reserved region has any committed regions - VMMemRegion* committed_rgn = (VMMemRegion*)next(); - while (committed_rgn != NULL && committed_rgn->is_committed_region()) { - // duplicated commit records - if(committed_rgn->contains_region(rec)) { - return true; - } else if (committed_rgn->overlaps_region(rec)) { - // overlaps front part - if (rec->addr() < committed_rgn->addr()) { - committed_rgn->expand_region(rec->addr(), - committed_rgn->addr() - rec->addr()); - } else { - // overlaps tail part - address committed_rgn_end = committed_rgn->addr() + - committed_rgn->size(); - assert(committed_rgn_end < rec->addr() + rec->size(), - "overlap tail part"); - committed_rgn->expand_region(committed_rgn_end, - (rec->addr() + rec->size()) - committed_rgn_end); - } - } else if (committed_rgn->base() + committed_rgn->size() == rec->addr()) { - // adjunct each other - committed_rgn->expand_region(rec->addr(), rec->size()); - VMMemRegion* next_reg = (VMMemRegion*)next(); - // see if we can consolidate next committed region - if (next_reg != NULL && next_reg->is_committed_region() && - next_reg->base() == committed_rgn->base() + committed_rgn->size()) { - committed_rgn->expand_region(next_reg->base(), next_reg->size()); - // delete merged region - remove(); - } - return true; - } else if (committed_rgn->base() > rec->addr()) { - // found the location, insert this committed region - return insert_record(rec); - } - committed_rgn = (VMMemRegion*)next(); - } - return insert_record(rec); -} - -bool VMMemPointerIterator::remove_uncommitted_region(MemPointerRecord* rec) { - assert(rec->is_uncommit_record(), "sanity check"); - VMMemRegion* cur; - cur = (VMMemRegion*)current(); - assert(cur->is_reserved_region() && cur->contains_region(rec), - "Sanity check"); - // thread's native stack is always marked as "committed", ignore - // the "commit" operation for creating stack guard pages - if (FLAGS_TO_MEMORY_TYPE(cur->flags()) == mtThreadStack && - FLAGS_TO_MEMORY_TYPE(rec->flags()) != mtThreadStack) { - return true; - } - - cur = (VMMemRegion*)next(); - while (cur != NULL && cur->is_committed_region()) { - // region already uncommitted, must be due to duplicated record - if (cur->addr() >= rec->addr() + rec->size()) { - break; - } else if (cur->contains_region(rec)) { - // uncommit whole region - if (cur->is_same_region(rec)) { - remove(); - break; - } else if (rec->addr() == cur->addr() || - rec->addr() + rec->size() == cur->addr() + cur->size()) { - // uncommitted from either end of current memory region. - cur->exclude_region(rec->addr(), rec->size()); - break; - } else { // split the committed region and release the middle - address high_addr = cur->addr() + cur->size(); - size_t sz = high_addr - rec->addr(); - cur->exclude_region(rec->addr(), sz); - sz = high_addr - (rec->addr() + rec->size()); - if (MemTracker::track_callsite()) { - MemPointerRecordEx tmp(rec->addr() + rec->size(), cur->flags(), sz, - ((VMMemRegionEx*)cur)->pc()); - return insert_record_after(&tmp); - } else { - MemPointerRecord tmp(rec->addr() + rec->size(), cur->flags(), sz); - return insert_record_after(&tmp); - } - } - } - cur = (VMMemRegion*)next(); - } - - // we may not find committed record due to duplicated records - return true; -} - -bool VMMemPointerIterator::remove_released_region(MemPointerRecord* rec) { - assert(rec->is_deallocation_record(), "Sanity check"); - VMMemRegion* cur = (VMMemRegion*)current(); - assert(cur->is_reserved_region() && cur->contains_region(rec), - "Sanity check"); - if (rec->is_same_region(cur)) { - - // In snapshot, the virtual memory records are sorted in following orders: - // 1. virtual memory's base address - // 2. virtual memory reservation record, followed by commit records within this reservation. - // The commit records are also in base address order. - // When a reserved region is released, we want to remove the reservation record and all - // commit records following it. -#ifdef ASSERT - address low_addr = cur->addr(); - address high_addr = low_addr + cur->size(); -#endif - // remove virtual memory reservation record - remove(); - // remove committed regions within above reservation - VMMemRegion* next_region = (VMMemRegion*)current(); - while (next_region != NULL && next_region->is_committed_region()) { - assert(next_region->addr() >= low_addr && - next_region->addr() + next_region->size() <= high_addr, - "Range check"); - remove(); - next_region = (VMMemRegion*)current(); - } - } else if (rec->addr() == cur->addr() || - rec->addr() + rec->size() == cur->addr() + cur->size()) { - // released region is at either end of this region - cur->exclude_region(rec->addr(), rec->size()); - assert(check_reserved_region(), "Integrity check"); - } else { // split the reserved region and release the middle - address high_addr = cur->addr() + cur->size(); - size_t sz = high_addr - rec->addr(); - cur->exclude_region(rec->addr(), sz); - sz = high_addr - rec->addr() - rec->size(); - if (MemTracker::track_callsite()) { - MemPointerRecordEx tmp(rec->addr() + rec->size(), cur->flags(), sz, - ((VMMemRegionEx*)cur)->pc()); - bool ret = insert_reserved_region(&tmp); - assert(!ret || check_reserved_region(), "Integrity check"); - return ret; - } else { - MemPointerRecord tmp(rec->addr() + rec->size(), cur->flags(), sz); - bool ret = insert_reserved_region(&tmp); - assert(!ret || check_reserved_region(), "Integrity check"); - return ret; - } - } - return true; -} - -bool VMMemPointerIterator::insert_reserved_region(MemPointerRecord* rec) { - // skip all 'commit' records associated with previous reserved region - VMMemRegion* p = (VMMemRegion*)next(); - while (p != NULL && p->is_committed_region() && - p->base() + p->size() < rec->addr()) { - p = (VMMemRegion*)next(); - } - return insert_record(rec); -} - -bool VMMemPointerIterator::split_reserved_region(VMMemRegion* rgn, address new_rgn_addr, size_t new_rgn_size) { - assert(rgn->contains_region(new_rgn_addr, new_rgn_size), "Not fully contained"); - address pc = (MemTracker::track_callsite() ? ((VMMemRegionEx*)rgn)->pc() : NULL); - if (rgn->base() == new_rgn_addr) { // new region is at the beginning of the region - size_t sz = rgn->size() - new_rgn_size; - // the original region becomes 'new' region - rgn->exclude_region(new_rgn_addr + new_rgn_size, sz); - // remaining becomes next region - MemPointerRecordEx next_rgn(new_rgn_addr + new_rgn_size, rgn->flags(), sz, pc); - return insert_reserved_region(&next_rgn); - } else if (rgn->base() + rgn->size() == new_rgn_addr + new_rgn_size) { - rgn->exclude_region(new_rgn_addr, new_rgn_size); - MemPointerRecordEx next_rgn(new_rgn_addr, rgn->flags(), new_rgn_size, pc); - return insert_reserved_region(&next_rgn); - } else { - // the orginal region will be split into three - address rgn_high_addr = rgn->base() + rgn->size(); - // first region - rgn->exclude_region(new_rgn_addr, (rgn_high_addr - new_rgn_addr)); - // the second region is the new region - MemPointerRecordEx new_rgn(new_rgn_addr, rgn->flags(), new_rgn_size, pc); - if (!insert_reserved_region(&new_rgn)) return false; - // the remaining region - MemPointerRecordEx rem_rgn(new_rgn_addr + new_rgn_size, rgn->flags(), - rgn_high_addr - (new_rgn_addr + new_rgn_size), pc); - return insert_reserved_region(&rem_rgn); - } -} - -static int sort_in_seq_order(const void* p1, const void* p2) { - assert(p1 != NULL && p2 != NULL, "Sanity check"); - const MemPointerRecord* mp1 = (MemPointerRecord*)p1; - const MemPointerRecord* mp2 = (MemPointerRecord*)p2; - return (mp1->seq() - mp2->seq()); -} - -bool StagingArea::init() { - if (MemTracker::track_callsite()) { - _malloc_data = new (std::nothrow)MemPointerArrayImpl(); - _vm_data = new (std::nothrow)MemPointerArrayImpl(); - } else { - _malloc_data = new (std::nothrow)MemPointerArrayImpl(); - _vm_data = new (std::nothrow)MemPointerArrayImpl(); - } - - if (_malloc_data != NULL && _vm_data != NULL && - !_malloc_data->out_of_memory() && - !_vm_data->out_of_memory()) { - return true; - } else { - if (_malloc_data != NULL) delete _malloc_data; - if (_vm_data != NULL) delete _vm_data; - _malloc_data = NULL; - _vm_data = NULL; - return false; - } -} - - -VMRecordIterator StagingArea::virtual_memory_record_walker() { - MemPointerArray* arr = vm_data(); - // sort into seq number order - arr->sort((FN_SORT)sort_in_seq_order); - return VMRecordIterator(arr); -} - - -MemSnapshot::MemSnapshot() { - if (MemTracker::track_callsite()) { - _alloc_ptrs = new (std::nothrow) MemPointerArrayImpl(); - _vm_ptrs = new (std::nothrow)MemPointerArrayImpl(64, true); - } else { - _alloc_ptrs = new (std::nothrow) MemPointerArrayImpl(); - _vm_ptrs = new (std::nothrow)MemPointerArrayImpl(64, true); - } - - _staging_area.init(); - _lock = new (std::nothrow) Mutex(Monitor::max_nonleaf - 1, "memSnapshotLock"); - NOT_PRODUCT(_untracked_count = 0;) - _number_of_classes = 0; -} - -MemSnapshot::~MemSnapshot() { - assert(MemTracker::shutdown_in_progress(), "native memory tracking still on"); - { - MutexLockerEx locker(_lock); - if (_alloc_ptrs != NULL) { - delete _alloc_ptrs; - _alloc_ptrs = NULL; - } - - if (_vm_ptrs != NULL) { - delete _vm_ptrs; - _vm_ptrs = NULL; - } - } - - if (_lock != NULL) { - delete _lock; - _lock = NULL; - } -} - - -void MemSnapshot::copy_seq_pointer(MemPointerRecord* dest, const MemPointerRecord* src) { - assert(dest != NULL && src != NULL, "Just check"); - assert(dest->addr() == src->addr(), "Just check"); - assert(dest->seq() > 0 && src->seq() > 0, "not sequenced"); - - if (MemTracker::track_callsite()) { - *(SeqMemPointerRecordEx*)dest = *(SeqMemPointerRecordEx*)src; - } else { - *(SeqMemPointerRecord*)dest = *(SeqMemPointerRecord*)src; - } -} - -void MemSnapshot::assign_pointer(MemPointerRecord*dest, const MemPointerRecord* src) { - assert(src != NULL && dest != NULL, "Just check"); - assert(dest->seq() == 0 && src->seq() >0, "cast away sequence"); - - if (MemTracker::track_callsite()) { - *(MemPointerRecordEx*)dest = *(MemPointerRecordEx*)src; - } else { - *(MemPointerRecord*)dest = *(MemPointerRecord*)src; - } -} - -// merge a recorder to the staging area -bool MemSnapshot::merge(MemRecorder* rec) { - assert(rec != NULL && !rec->out_of_memory(), "Just check"); - - SequencedRecordIterator itr(rec->pointer_itr()); - - MutexLockerEx lock(_lock, true); - MemPointerIterator malloc_staging_itr(_staging_area.malloc_data()); - MemPointerRecord* incoming_rec = (MemPointerRecord*) itr.current(); - MemPointerRecord* matched_rec; - - while (incoming_rec != NULL) { - if (incoming_rec->is_vm_pointer()) { - // we don't do anything with virtual memory records during merge - if (!_staging_area.vm_data()->append(incoming_rec)) { - return false; - } - } else { - // locate matched record and/or also position the iterator to proper - // location for this incoming record. - matched_rec = (MemPointerRecord*)malloc_staging_itr.locate(incoming_rec->addr()); - // we have not seen this memory block in this generation, - // so just add to staging area - if (matched_rec == NULL) { - if (!malloc_staging_itr.insert(incoming_rec)) { - return false; - } - } else if (incoming_rec->addr() == matched_rec->addr()) { - // whoever has higher sequence number wins - if (incoming_rec->seq() > matched_rec->seq()) { - copy_seq_pointer(matched_rec, incoming_rec); - } - } else if (incoming_rec->addr() < matched_rec->addr()) { - if (!malloc_staging_itr.insert(incoming_rec)) { - return false; - } - } else { - ShouldNotReachHere(); - } - } - incoming_rec = (MemPointerRecord*)itr.next(); - } - NOT_PRODUCT(void check_staging_data();) - return true; -} - - -// promote data to next generation -bool MemSnapshot::promote(int number_of_classes) { - assert(_alloc_ptrs != NULL && _vm_ptrs != NULL, "Just check"); - assert(_staging_area.malloc_data() != NULL && _staging_area.vm_data() != NULL, - "Just check"); - MutexLockerEx lock(_lock, true); - - MallocRecordIterator malloc_itr = _staging_area.malloc_record_walker(); - bool promoted = false; - if (promote_malloc_records(&malloc_itr)) { - VMRecordIterator vm_itr = _staging_area.virtual_memory_record_walker(); - if (promote_virtual_memory_records(&vm_itr)) { - promoted = true; - } - } - - NOT_PRODUCT(check_malloc_pointers();) - _staging_area.clear(); - _number_of_classes = number_of_classes; - return promoted; -} - -bool MemSnapshot::promote_malloc_records(MemPointerArrayIterator* itr) { - MemPointerIterator malloc_snapshot_itr(_alloc_ptrs); - MemPointerRecord* new_rec = (MemPointerRecord*)itr->current(); - MemPointerRecord* matched_rec; - while (new_rec != NULL) { - matched_rec = (MemPointerRecord*)malloc_snapshot_itr.locate(new_rec->addr()); - // found matched memory block - if (matched_rec != NULL && new_rec->addr() == matched_rec->addr()) { - // snapshot already contains 'live' records - assert(matched_rec->is_allocation_record() || matched_rec->is_arena_memory_record(), - "Sanity check"); - // update block states - if (new_rec->is_allocation_record()) { - assign_pointer(matched_rec, new_rec); - } else if (new_rec->is_arena_memory_record()) { - if (new_rec->size() == 0) { - // remove size record once size drops to 0 - malloc_snapshot_itr.remove(); - } else { - assign_pointer(matched_rec, new_rec); - } - } else { - // a deallocation record - assert(new_rec->is_deallocation_record(), "Sanity check"); - // an arena record can be followed by a size record, we need to remove both - if (matched_rec->is_arena_record()) { - MemPointerRecord* next = (MemPointerRecord*)malloc_snapshot_itr.peek_next(); - if (next != NULL && next->is_arena_memory_record() && - next->is_memory_record_of_arena(matched_rec)) { - malloc_snapshot_itr.remove(); - } - } - // the memory is deallocated, remove related record(s) - malloc_snapshot_itr.remove(); - } - } else { - // don't insert size 0 record - if (new_rec->is_arena_memory_record() && new_rec->size() == 0) { - new_rec = NULL; - } - - if (new_rec != NULL) { - if (new_rec->is_allocation_record() || new_rec->is_arena_memory_record()) { - if (matched_rec != NULL && new_rec->addr() > matched_rec->addr()) { - if (!malloc_snapshot_itr.insert_after(new_rec)) { - return false; - } - } else { - if (!malloc_snapshot_itr.insert(new_rec)) { - return false; - } - } - } -#ifndef PRODUCT - else if (!has_allocation_record(new_rec->addr())) { - // NMT can not track some startup memory, which is allocated before NMT is on - _untracked_count ++; - } -#endif - } - } - new_rec = (MemPointerRecord*)itr->next(); - } - return true; -} - -bool MemSnapshot::promote_virtual_memory_records(MemPointerArrayIterator* itr) { - VMMemPointerIterator vm_snapshot_itr(_vm_ptrs); - MemPointerRecord* new_rec = (MemPointerRecord*)itr->current(); - VMMemRegion* reserved_rec; - while (new_rec != NULL) { - assert(new_rec->is_vm_pointer(), "Sanity check"); - - // locate a reserved region that contains the specified address, or - // the nearest reserved region has base address just above the specified - // address - reserved_rec = (VMMemRegion*)vm_snapshot_itr.locate(new_rec->addr()); - if (reserved_rec != NULL && reserved_rec->contains_region(new_rec)) { - // snapshot can only have 'live' records - assert(reserved_rec->is_reserved_region(), "Sanity check"); - if (new_rec->is_allocation_record()) { - if (!reserved_rec->is_same_region(new_rec)) { - // only deal with split a bigger reserved region into smaller regions. - // So far, CDS is the only use case. - if (!vm_snapshot_itr.split_reserved_region(reserved_rec, new_rec->addr(), new_rec->size())) { - return false; - } - } - } else if (new_rec->is_uncommit_record()) { - if (!vm_snapshot_itr.remove_uncommitted_region(new_rec)) { - return false; - } - } else if (new_rec->is_commit_record()) { - // insert or expand existing committed region to cover this - // newly committed region - if (!vm_snapshot_itr.add_committed_region(new_rec)) { - return false; - } - } else if (new_rec->is_deallocation_record()) { - // release part or all memory region - if (!vm_snapshot_itr.remove_released_region(new_rec)) { - return false; - } - } else if (new_rec->is_type_tagging_record()) { - // tag this reserved virtual memory range to a memory type. Can not re-tag a memory range - // to different type. - assert(FLAGS_TO_MEMORY_TYPE(reserved_rec->flags()) == mtNone || - FLAGS_TO_MEMORY_TYPE(reserved_rec->flags()) == FLAGS_TO_MEMORY_TYPE(new_rec->flags()), - "Sanity check"); - reserved_rec->tag(new_rec->flags()); - } else { - ShouldNotReachHere(); - } - } else { - /* - * The assertion failure indicates mis-matched virtual memory records. The likely - * scenario is, that some virtual memory operations are not going through os::xxxx_memory() - * api, which have to be tracked manually. (perfMemory is an example). - */ - assert(new_rec->is_allocation_record(), "Sanity check"); - if (!vm_snapshot_itr.add_reserved_region(new_rec)) { - return false; - } - } - new_rec = (MemPointerRecord*)itr->next(); - } - return true; -} - -#ifndef PRODUCT -void MemSnapshot::print_snapshot_stats(outputStream* st) { - st->print_cr("Snapshot:"); - st->print_cr("\tMalloced: %d/%d [%5.2f%%] %dKB", _alloc_ptrs->length(), _alloc_ptrs->capacity(), - (100.0 * (float)_alloc_ptrs->length()) / (float)_alloc_ptrs->capacity(), _alloc_ptrs->instance_size()/K); - - st->print_cr("\tVM: %d/%d [%5.2f%%] %dKB", _vm_ptrs->length(), _vm_ptrs->capacity(), - (100.0 * (float)_vm_ptrs->length()) / (float)_vm_ptrs->capacity(), _vm_ptrs->instance_size()/K); - - st->print_cr("\tMalloc staging Area: %d/%d [%5.2f%%] %dKB", _staging_area.malloc_data()->length(), - _staging_area.malloc_data()->capacity(), - (100.0 * (float)_staging_area.malloc_data()->length()) / (float)_staging_area.malloc_data()->capacity(), - _staging_area.malloc_data()->instance_size()/K); - - st->print_cr("\tVirtual memory staging Area: %d/%d [%5.2f%%] %dKB", _staging_area.vm_data()->length(), - _staging_area.vm_data()->capacity(), - (100.0 * (float)_staging_area.vm_data()->length()) / (float)_staging_area.vm_data()->capacity(), - _staging_area.vm_data()->instance_size()/K); - - st->print_cr("\tUntracked allocation: %d", _untracked_count); -} - -void MemSnapshot::check_malloc_pointers() { - MemPointerArrayIteratorImpl mItr(_alloc_ptrs); - MemPointerRecord* p = (MemPointerRecord*)mItr.current(); - MemPointerRecord* prev = NULL; - while (p != NULL) { - if (prev != NULL) { - assert(p->addr() >= prev->addr(), "sorting order"); - } - prev = p; - p = (MemPointerRecord*)mItr.next(); - } -} - -bool MemSnapshot::has_allocation_record(address addr) { - MemPointerArrayIteratorImpl itr(_staging_area.malloc_data()); - MemPointerRecord* cur = (MemPointerRecord*)itr.current(); - while (cur != NULL) { - if (cur->addr() == addr && cur->is_allocation_record()) { - return true; - } - cur = (MemPointerRecord*)itr.next(); - } - return false; -} -#endif // PRODUCT - -#ifdef ASSERT -void MemSnapshot::check_staging_data() { - MemPointerArrayIteratorImpl itr(_staging_area.malloc_data()); - MemPointerRecord* cur = (MemPointerRecord*)itr.current(); - MemPointerRecord* next = (MemPointerRecord*)itr.next(); - while (next != NULL) { - assert((next->addr() > cur->addr()) || - ((next->flags() & MemPointerRecord::tag_masks) > - (cur->flags() & MemPointerRecord::tag_masks)), - "sorting order"); - cur = next; - next = (MemPointerRecord*)itr.next(); - } - - MemPointerArrayIteratorImpl vm_itr(_staging_area.vm_data()); - cur = (MemPointerRecord*)vm_itr.current(); - while (cur != NULL) { - assert(cur->is_vm_pointer(), "virtual memory pointer only"); - cur = (MemPointerRecord*)vm_itr.next(); - } -} - -void MemSnapshot::dump_all_vm_pointers() { - MemPointerArrayIteratorImpl itr(_vm_ptrs); - VMMemRegion* ptr = (VMMemRegion*)itr.current(); - tty->print_cr("dump virtual memory pointers:"); - while (ptr != NULL) { - if (ptr->is_committed_region()) { - tty->print("\t"); - } - tty->print("[" PTR_FORMAT " - " PTR_FORMAT "] [%x]", ptr->addr(), - (ptr->addr() + ptr->size()), ptr->flags()); - - if (MemTracker::track_callsite()) { - VMMemRegionEx* ex = (VMMemRegionEx*)ptr; - if (ex->pc() != NULL) { - char buf[1024]; - if (os::dll_address_to_function_name(ex->pc(), buf, sizeof(buf), NULL)) { - tty->print_cr("\t%s", buf); - } else { - tty->cr(); - } - } - } - - ptr = (VMMemRegion*)itr.next(); - } - tty->flush(); -} -#endif // ASSERT -