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![Alexander Markov](/assets/img/avatar_default.png)
This option dumps offsets of Dart fields and sizes of Dart instances into the specified file in JSON format. Could be useful for debugging or memory usage investigations. Typical output: {"class":"_JsonUtf8Parser","size":80,"fields":[{"field":"emptyChunk","static":true},{"field":"decoder","offset":56},{"field":"chunk","offset":64},{"field":"chunkEnd","offset":72}]} TEST=runtime/tests/vm/dart/print_object_layout_test.dart Fixes https://github.com/dart-lang/sdk/issues/47892 Change-Id: I0b2f7ed9e4991e5fcd18517d5a06aa826c6d7125 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/223662 Reviewed-by: Dan Field <dnfield@google.com> Reviewed-by: Siva Annamalai <asiva@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
698 lines
22 KiB
C++
698 lines
22 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/class_table.h"
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#include <limits>
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#include <memory>
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#include "platform/atomic.h"
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#include "vm/flags.h"
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#include "vm/growable_array.h"
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#include "vm/heap/heap.h"
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#include "vm/object.h"
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#include "vm/object_graph.h"
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#include "vm/raw_object.h"
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#include "vm/visitor.h"
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namespace dart {
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DEFINE_FLAG(bool, print_class_table, false, "Print initial class table.");
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SharedClassTable::SharedClassTable()
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: top_(kNumPredefinedCids),
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capacity_(0),
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old_tables_(new MallocGrowableArray<void*>()) {
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if (Dart::vm_isolate() == NULL) {
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ASSERT(kInitialCapacity >= kNumPredefinedCids);
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capacity_ = kInitialCapacity;
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// Note that [calloc] will zero-initialize the memory.
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table_.store(reinterpret_cast<RelaxedAtomic<intptr_t>*>(
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calloc(capacity_, sizeof(RelaxedAtomic<intptr_t>))));
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} else {
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// Duplicate the class table from the VM isolate.
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auto vm_shared_class_table = Dart::vm_isolate_group()->shared_class_table();
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capacity_ = vm_shared_class_table->capacity_;
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// Note that [calloc] will zero-initialize the memory.
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RelaxedAtomic<intptr_t>* table = reinterpret_cast<RelaxedAtomic<intptr_t>*>(
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calloc(capacity_, sizeof(RelaxedAtomic<intptr_t>)));
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// The following cids don't have a corresponding class object in Dart code.
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// We therefore need to initialize them eagerly.
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COMPILE_ASSERT(kFirstInternalOnlyCid == kObjectCid + 1);
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for (intptr_t i = kObjectCid; i <= kLastInternalOnlyCid; i++) {
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table[i] = vm_shared_class_table->SizeAt(i);
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}
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table[kTypeArgumentsCid] = vm_shared_class_table->SizeAt(kTypeArgumentsCid);
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table[kFreeListElement] = vm_shared_class_table->SizeAt(kFreeListElement);
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table[kForwardingCorpse] = vm_shared_class_table->SizeAt(kForwardingCorpse);
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table[kDynamicCid] = vm_shared_class_table->SizeAt(kDynamicCid);
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table[kVoidCid] = vm_shared_class_table->SizeAt(kVoidCid);
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table_.store(table);
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}
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#if defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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// Note that [calloc] will zero-initialize the memory.
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unboxed_fields_map_ = static_cast<UnboxedFieldBitmap*>(
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calloc(capacity_, sizeof(UnboxedFieldBitmap)));
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#endif // defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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#ifndef PRODUCT
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// Note that [calloc] will zero-initialize the memory.
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trace_allocation_table_.store(
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static_cast<uint8_t*>(calloc(capacity_, sizeof(uint8_t))));
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#endif // !PRODUCT
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}
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SharedClassTable::~SharedClassTable() {
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if (old_tables_ != NULL) {
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FreeOldTables();
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delete old_tables_;
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}
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free(table_.load());
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free(unboxed_fields_map_);
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NOT_IN_PRODUCT(free(trace_allocation_table_.load()));
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}
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void ClassTable::set_table(ClassPtr* table) {
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// We don't have to stop mutators, since the old table is the prefix of the
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// new table. But we should ensure that all writes to the current table are
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// visible once the new table is visible.
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table_.store(table);
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IsolateGroup::Current()->set_cached_class_table_table(table);
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}
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ClassTable::ClassTable(SharedClassTable* shared_class_table)
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: top_(kNumPredefinedCids),
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capacity_(0),
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tlc_top_(0),
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tlc_capacity_(0),
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table_(nullptr),
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tlc_table_(nullptr),
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old_class_tables_(new MallocGrowableArray<ClassPtr*>()),
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shared_class_table_(shared_class_table) {
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if (Dart::vm_isolate() == NULL) {
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ASSERT(kInitialCapacity >= kNumPredefinedCids);
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capacity_ = kInitialCapacity;
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// Note that [calloc] will zero-initialize the memory.
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// Don't use set_table because caller is supposed to set up isolates
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// cached copy when constructing ClassTable. Isolate::Current might not
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// be available at this point yet.
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table_.store(static_cast<ClassPtr*>(calloc(capacity_, sizeof(ClassPtr))));
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} else {
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// Duplicate the class table from the VM isolate.
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ClassTable* vm_class_table = Dart::vm_isolate_group()->class_table();
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capacity_ = vm_class_table->capacity_;
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// Note that [calloc] will zero-initialize the memory.
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ClassPtr* table =
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static_cast<ClassPtr*>(calloc(capacity_, sizeof(ClassPtr)));
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// The following cids don't have a corresponding class object in Dart code.
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// We therefore need to initialize them eagerly.
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COMPILE_ASSERT(kFirstInternalOnlyCid == kObjectCid + 1);
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for (intptr_t i = kObjectCid; i <= kLastInternalOnlyCid; i++) {
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table[i] = vm_class_table->At(i);
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}
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table[kTypeArgumentsCid] = vm_class_table->At(kTypeArgumentsCid);
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table[kFreeListElement] = vm_class_table->At(kFreeListElement);
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table[kForwardingCorpse] = vm_class_table->At(kForwardingCorpse);
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table[kDynamicCid] = vm_class_table->At(kDynamicCid);
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table[kVoidCid] = vm_class_table->At(kVoidCid);
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// Don't use set_table because caller is supposed to set up isolates
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// cached copy when constructing ClassTable. Isolate::Current might not
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// be available at this point yet.
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table_.store(table);
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}
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}
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ClassTable::~ClassTable() {
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if (old_class_tables_ != nullptr) {
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FreeOldTables();
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delete old_class_tables_;
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}
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free(table_.load());
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free(tlc_table_.load());
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}
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void ClassTable::AddOldTable(ClassPtr* old_class_table) {
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ASSERT(Thread::Current()->IsMutatorThread());
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old_class_tables_->Add(old_class_table);
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}
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void ClassTable::FreeOldTables() {
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while (old_class_tables_->length() > 0) {
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free(old_class_tables_->RemoveLast());
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}
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}
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void SharedClassTable::AddOldTable(intptr_t* old_table) {
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ASSERT(Thread::Current()->IsMutatorThread());
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old_tables_->Add(old_table);
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}
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void SharedClassTable::FreeOldTables() {
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while (old_tables_->length() > 0) {
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free(old_tables_->RemoveLast());
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}
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}
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void ClassTable::Register(const Class& cls) {
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ASSERT(Thread::Current()->IsMutatorThread());
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const classid_t cid = cls.id();
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ASSERT(!IsTopLevelCid(cid));
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// During the transition period we would like [SharedClassTable] to operate in
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// parallel to [ClassTable].
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const intptr_t instance_size =
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cls.is_abstract() ? 0 : Class::host_instance_size(cls.ptr());
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const intptr_t expected_cid =
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shared_class_table_->Register(cid, instance_size);
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if (cid != kIllegalCid) {
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ASSERT(cid > 0 && cid < kNumPredefinedCids && cid < top_);
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ASSERT(table_.load()[cid] == nullptr);
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table_.load()[cid] = cls.ptr();
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} else {
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if (top_ == capacity_) {
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const intptr_t new_capacity = capacity_ + kCapacityIncrement;
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Grow(new_capacity);
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}
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ASSERT(top_ < capacity_);
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cls.set_id(top_);
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table_.load()[top_] = cls.ptr();
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top_++; // Increment next index.
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}
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ASSERT(expected_cid == cls.id());
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}
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void ClassTable::RegisterTopLevel(const Class& cls) {
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if (top_ >= std::numeric_limits<classid_t>::max()) {
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FATAL1("Fatal error in ClassTable::RegisterTopLevel: invalid index %" Pd
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"\n",
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top_);
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}
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ASSERT(Thread::Current()->IsMutatorThread());
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const intptr_t index = cls.id();
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ASSERT(index == kIllegalCid);
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if (tlc_top_ == tlc_capacity_) {
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const intptr_t new_capacity = tlc_capacity_ + kCapacityIncrement;
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GrowTopLevel(new_capacity);
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}
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ASSERT(tlc_top_ < tlc_capacity_);
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cls.set_id(ClassTable::CidFromTopLevelIndex(tlc_top_));
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tlc_table_.load()[tlc_top_] = cls.ptr();
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tlc_top_++; // Increment next index.
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}
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intptr_t SharedClassTable::Register(intptr_t index, intptr_t size) {
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if (!Class::is_valid_id(top_)) {
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FATAL1("Fatal error in SharedClassTable::Register: invalid index %" Pd "\n",
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top_);
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}
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ASSERT(Thread::Current()->IsMutatorThread());
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if (index != kIllegalCid) {
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// We are registring the size of a predefined class.
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ASSERT(index > 0 && index < kNumPredefinedCids);
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SetSizeAt(index, size);
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return index;
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} else {
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ASSERT(size == 0);
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if (top_ == capacity_) {
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const intptr_t new_capacity = capacity_ + kCapacityIncrement;
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Grow(new_capacity);
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}
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ASSERT(top_ < capacity_);
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table_.load()[top_] = size;
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return top_++; // Increment next index.
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}
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}
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void ClassTable::AllocateIndex(intptr_t index) {
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if (IsTopLevelCid(index)) {
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AllocateTopLevelIndex(index);
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return;
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}
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// This is called by a snapshot reader.
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shared_class_table_->AllocateIndex(index);
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ASSERT(Class::is_valid_id(index));
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if (index >= capacity_) {
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const intptr_t new_capacity = index + kCapacityIncrement;
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Grow(new_capacity);
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}
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ASSERT(table_.load()[index] == nullptr);
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if (index >= top_) {
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top_ = index + 1;
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}
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ASSERT(top_ == shared_class_table_->top_);
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ASSERT(capacity_ == shared_class_table_->capacity_);
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}
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void ClassTable::AllocateTopLevelIndex(intptr_t cid) {
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ASSERT(IsTopLevelCid(cid));
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const intptr_t tlc_index = IndexFromTopLevelCid(cid);
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if (tlc_index >= tlc_capacity_) {
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const intptr_t new_capacity = tlc_index + kCapacityIncrement;
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GrowTopLevel(new_capacity);
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}
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ASSERT(tlc_table_.load()[tlc_index] == nullptr);
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if (tlc_index >= tlc_top_) {
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tlc_top_ = tlc_index + 1;
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}
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}
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void ClassTable::Grow(intptr_t new_capacity) {
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ASSERT(new_capacity > capacity_);
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auto old_table = table_.load();
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auto new_table = static_cast<ClassPtr*>(
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malloc(new_capacity * sizeof(ClassPtr))); // NOLINT
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intptr_t i;
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for (i = 0; i < capacity_; i++) {
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// Don't use memmove, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_table[i] = old_table[i];
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}
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for (; i < new_capacity; i++) {
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// Don't use memset, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_table[i] = 0;
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}
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old_class_tables_->Add(old_table);
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set_table(new_table);
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capacity_ = new_capacity;
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}
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void ClassTable::GrowTopLevel(intptr_t new_capacity) {
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ASSERT(new_capacity > tlc_capacity_);
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auto old_table = tlc_table_.load();
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auto new_table = static_cast<ClassPtr*>(
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malloc(new_capacity * sizeof(ClassPtr))); // NOLINT
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intptr_t i;
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for (i = 0; i < tlc_capacity_; i++) {
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// Don't use memmove, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_table[i] = old_table[i];
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}
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for (; i < new_capacity; i++) {
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// Don't use memset, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_table[i] = 0;
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}
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old_class_tables_->Add(old_table);
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tlc_table_.store(new_table);
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tlc_capacity_ = new_capacity;
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}
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void SharedClassTable::AllocateIndex(intptr_t index) {
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// This is called by a snapshot reader.
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ASSERT(Class::is_valid_id(index));
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if (index >= capacity_) {
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const intptr_t new_capacity = index + kCapacityIncrement;
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Grow(new_capacity);
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}
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ASSERT(table_.load()[index] == 0);
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if (index >= top_) {
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top_ = index + 1;
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}
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}
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void SharedClassTable::Grow(intptr_t new_capacity) {
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ASSERT(new_capacity >= capacity_);
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RelaxedAtomic<intptr_t>* old_table = table_.load();
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RelaxedAtomic<intptr_t>* new_table =
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reinterpret_cast<RelaxedAtomic<intptr_t>*>(
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malloc(new_capacity * sizeof(RelaxedAtomic<intptr_t>))); // NOLINT
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intptr_t i;
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for (i = 0; i < capacity_; i++) {
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// Don't use memmove, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_table[i] = old_table[i];
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}
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for (; i < new_capacity; i++) {
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// Don't use memset, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_table[i] = 0;
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}
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#if !defined(PRODUCT)
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auto old_trace_table = trace_allocation_table_.load();
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auto new_trace_table =
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static_cast<uint8_t*>(malloc(new_capacity * sizeof(uint8_t))); // NOLINT
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for (i = 0; i < capacity_; i++) {
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// Don't use memmove, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_trace_table[i] = old_trace_table[i];
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}
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for (; i < new_capacity; i++) {
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// Don't use memset, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_trace_table[i] = 0;
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}
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#endif
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old_tables_->Add(old_table);
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table_.store(new_table);
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NOT_IN_PRODUCT(old_tables_->Add(old_trace_table));
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NOT_IN_PRODUCT(trace_allocation_table_.store(new_trace_table));
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#if defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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auto old_unboxed_fields_map = unboxed_fields_map_;
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auto new_unboxed_fields_map = static_cast<UnboxedFieldBitmap*>(
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malloc(new_capacity * sizeof(UnboxedFieldBitmap)));
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for (i = 0; i < capacity_; i++) {
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// Don't use memmove, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_unboxed_fields_map[i] = old_unboxed_fields_map[i];
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}
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for (; i < new_capacity; i++) {
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// Don't use memset, which changes this from a relaxed atomic operation
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// to a non-atomic operation.
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new_unboxed_fields_map[i] = UnboxedFieldBitmap(0);
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}
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old_tables_->Add(old_unboxed_fields_map);
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unboxed_fields_map_ = new_unboxed_fields_map;
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#endif // defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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capacity_ = new_capacity;
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}
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void ClassTable::Unregister(intptr_t cid) {
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ASSERT(!IsTopLevelCid(cid));
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shared_class_table_->Unregister(cid);
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table_.load()[cid] = nullptr;
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}
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void ClassTable::UnregisterTopLevel(intptr_t cid) {
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ASSERT(IsTopLevelCid(cid));
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const intptr_t tlc_index = IndexFromTopLevelCid(cid);
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tlc_table_.load()[tlc_index] = nullptr;
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}
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void SharedClassTable::Unregister(intptr_t index) {
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table_.load()[index] = 0;
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#if defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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unboxed_fields_map_[index].Reset();
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#endif // defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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}
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void ClassTable::Remap(intptr_t* old_to_new_cid) {
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ASSERT(Thread::Current()->IsAtSafepoint(SafepointLevel::kGCAndDeopt));
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const intptr_t num_cids = NumCids();
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std::unique_ptr<ClassPtr[]> cls_by_old_cid(new ClassPtr[num_cids]);
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auto* table = table_.load();
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memmove(cls_by_old_cid.get(), table, sizeof(ClassPtr) * num_cids);
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for (intptr_t i = 0; i < num_cids; i++) {
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table[old_to_new_cid[i]] = cls_by_old_cid[i];
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}
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}
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void SharedClassTable::Remap(intptr_t* old_to_new_cid) {
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ASSERT(Thread::Current()->IsAtSafepoint(SafepointLevel::kGCAndDeopt));
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const intptr_t num_cids = NumCids();
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std::unique_ptr<intptr_t[]> size_by_old_cid(new intptr_t[num_cids]);
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auto* table = table_.load();
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for (intptr_t i = 0; i < num_cids; i++) {
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size_by_old_cid[i] = table[i];
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}
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for (intptr_t i = 0; i < num_cids; i++) {
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table[old_to_new_cid[i]] = size_by_old_cid[i];
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}
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#if defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
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std::unique_ptr<UnboxedFieldBitmap[]> unboxed_fields_by_old_cid(
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new UnboxedFieldBitmap[num_cids]);
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for (intptr_t i = 0; i < num_cids; i++) {
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unboxed_fields_by_old_cid[i] = unboxed_fields_map_[i];
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}
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for (intptr_t i = 0; i < num_cids; i++) {
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unboxed_fields_map_[old_to_new_cid[i]] = unboxed_fields_by_old_cid[i];
|
|
}
|
|
#endif // defined(SUPPORT_UNBOXED_INSTANCE_FIELDS)
|
|
}
|
|
|
|
void ClassTable::VisitObjectPointers(ObjectPointerVisitor* visitor) {
|
|
ASSERT(visitor != NULL);
|
|
visitor->set_gc_root_type("class table");
|
|
if (top_ != 0) {
|
|
auto* table = table_.load();
|
|
ObjectPtr* from = reinterpret_cast<ObjectPtr*>(&table[0]);
|
|
ObjectPtr* to = reinterpret_cast<ObjectPtr*>(&table[top_ - 1]);
|
|
visitor->VisitPointers(from, to);
|
|
}
|
|
if (tlc_top_ != 0) {
|
|
auto* tlc_table = tlc_table_.load();
|
|
ObjectPtr* from = reinterpret_cast<ObjectPtr*>(&tlc_table[0]);
|
|
ObjectPtr* to = reinterpret_cast<ObjectPtr*>(&tlc_table[tlc_top_ - 1]);
|
|
visitor->VisitPointers(from, to);
|
|
}
|
|
visitor->clear_gc_root_type();
|
|
}
|
|
|
|
void ClassTable::CopySizesFromClassObjects() {
|
|
ASSERT(kIllegalCid == 0);
|
|
for (intptr_t i = 1; i < top_; i++) {
|
|
SetAt(i, At(i));
|
|
}
|
|
}
|
|
|
|
void ClassTable::Validate() {
|
|
Class& cls = Class::Handle();
|
|
for (intptr_t cid = kNumPredefinedCids; cid < top_; cid++) {
|
|
// Some of the class table entries maybe NULL as we create some
|
|
// top level classes but do not add them to the list of anonymous
|
|
// classes in a library if there are no top level fields or functions.
|
|
// Since there are no references to these top level classes they are
|
|
// not written into a full snapshot and will not be recreated when
|
|
// we read back the full snapshot. These class slots end up with NULL
|
|
// entries.
|
|
if (HasValidClassAt(cid)) {
|
|
cls = At(cid);
|
|
ASSERT(cls.IsClass());
|
|
#if defined(DART_PRECOMPILER)
|
|
// Precompiler can drop classes and set their id() to kIllegalCid.
|
|
// It still leaves them in the class table so dropped program
|
|
// structure could still be accessed while writing debug info.
|
|
ASSERT((cls.id() == cid) || (cls.id() == kIllegalCid));
|
|
#else
|
|
ASSERT(cls.id() == cid);
|
|
#endif // defined(DART_PRECOMPILER)
|
|
}
|
|
}
|
|
}
|
|
|
|
void ClassTable::Print() {
|
|
Class& cls = Class::Handle();
|
|
String& name = String::Handle();
|
|
|
|
for (intptr_t i = 1; i < top_; i++) {
|
|
if (!HasValidClassAt(i)) {
|
|
continue;
|
|
}
|
|
cls = At(i);
|
|
if (cls.ptr() != nullptr) {
|
|
name = cls.Name();
|
|
OS::PrintErr("%" Pd ": %s\n", i, name.ToCString());
|
|
}
|
|
}
|
|
}
|
|
|
|
void ClassTable::SetAt(intptr_t cid, ClassPtr raw_cls) {
|
|
if (IsTopLevelCid(cid)) {
|
|
tlc_table_.load()[IndexFromTopLevelCid(cid)] = raw_cls;
|
|
return;
|
|
}
|
|
|
|
// This is called by snapshot reader and class finalizer.
|
|
ASSERT(cid < capacity_);
|
|
UpdateClassSize(cid, raw_cls);
|
|
table_.load()[cid] = raw_cls;
|
|
}
|
|
|
|
void ClassTable::UpdateClassSize(intptr_t cid, ClassPtr raw_cls) {
|
|
ASSERT(IsolateGroup::Current()->program_lock()->IsCurrentThreadWriter());
|
|
ASSERT(!IsTopLevelCid(cid)); // "top-level" classes don't get instantiated
|
|
ASSERT(cid < capacity_);
|
|
const intptr_t size =
|
|
raw_cls == nullptr ? 0 : Class::host_instance_size(raw_cls);
|
|
shared_class_table_->SetSizeAt(cid, size);
|
|
}
|
|
|
|
#if defined(DART_PRECOMPILER)
|
|
void ClassTable::PrintObjectLayout(const char* filename) {
|
|
Class& cls = Class::Handle();
|
|
Array& fields = Array::Handle();
|
|
Field& field = Field::Handle();
|
|
|
|
JSONWriter js;
|
|
js.OpenArray();
|
|
for (intptr_t i = ClassId::kObjectCid; i < top_; i++) {
|
|
if (!HasValidClassAt(i)) {
|
|
continue;
|
|
}
|
|
cls = At(i);
|
|
ASSERT(!cls.IsNull());
|
|
ASSERT(cls.id() != kIllegalCid);
|
|
ASSERT(cls.is_finalized()); // Precompiler already finalized all classes.
|
|
ASSERT(!cls.IsTopLevel());
|
|
js.OpenObject();
|
|
js.PrintProperty("class", cls.UserVisibleNameCString());
|
|
js.PrintProperty("size", cls.target_instance_size());
|
|
js.OpenArray("fields");
|
|
fields = cls.fields();
|
|
if (!fields.IsNull()) {
|
|
for (intptr_t i = 0, n = fields.Length(); i < n; ++i) {
|
|
field ^= fields.At(i);
|
|
js.OpenObject();
|
|
js.PrintProperty("field", field.UserVisibleNameCString());
|
|
if (field.is_static()) {
|
|
js.PrintPropertyBool("static", true);
|
|
} else {
|
|
js.PrintProperty("offset", field.TargetOffset());
|
|
}
|
|
js.CloseObject();
|
|
}
|
|
}
|
|
js.CloseArray();
|
|
js.CloseObject();
|
|
}
|
|
js.CloseArray();
|
|
|
|
auto file_open = Dart::file_open_callback();
|
|
auto file_write = Dart::file_write_callback();
|
|
auto file_close = Dart::file_close_callback();
|
|
if ((file_open == nullptr) || (file_write == nullptr) ||
|
|
(file_close == nullptr)) {
|
|
OS::PrintErr("warning: Could not access file callbacks.");
|
|
return;
|
|
}
|
|
|
|
void* file = file_open(filename, /*write=*/true);
|
|
if (file == nullptr) {
|
|
OS::PrintErr("warning: Failed to write object layout: %s\n", filename);
|
|
return;
|
|
}
|
|
|
|
char* output = nullptr;
|
|
intptr_t output_length = 0;
|
|
js.Steal(&output, &output_length);
|
|
file_write(output, output_length, file);
|
|
free(output);
|
|
file_close(file);
|
|
}
|
|
#endif // defined(DART_PRECOMPILER)
|
|
|
|
#ifndef PRODUCT
|
|
void ClassTable::PrintToJSONObject(JSONObject* object) {
|
|
Class& cls = Class::Handle();
|
|
object->AddProperty("type", "ClassList");
|
|
{
|
|
JSONArray members(object, "classes");
|
|
for (intptr_t i = ClassId::kObjectCid; i < top_; i++) {
|
|
if (HasValidClassAt(i)) {
|
|
cls = At(i);
|
|
members.AddValue(cls);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
intptr_t SharedClassTable::ClassOffsetFor(intptr_t cid) {
|
|
return cid * sizeof(uint8_t); // NOLINT
|
|
}
|
|
|
|
|
|
void ClassTable::AllocationProfilePrintJSON(JSONStream* stream, bool internal) {
|
|
Isolate* isolate = Isolate::Current();
|
|
ASSERT(isolate != NULL);
|
|
auto isolate_group = isolate->group();
|
|
Heap* heap = isolate_group->heap();
|
|
ASSERT(heap != NULL);
|
|
JSONObject obj(stream);
|
|
obj.AddProperty("type", "AllocationProfile");
|
|
if (isolate_group->last_allocationprofile_accumulator_reset_timestamp() !=
|
|
0) {
|
|
obj.AddPropertyF(
|
|
"dateLastAccumulatorReset", "%" Pd64 "",
|
|
isolate_group->last_allocationprofile_accumulator_reset_timestamp());
|
|
}
|
|
if (isolate_group->last_allocationprofile_gc_timestamp() != 0) {
|
|
obj.AddPropertyF("dateLastServiceGC", "%" Pd64 "",
|
|
isolate_group->last_allocationprofile_gc_timestamp());
|
|
}
|
|
|
|
if (internal) {
|
|
JSONObject heaps(&obj, "_heaps");
|
|
{ heap->PrintToJSONObject(Heap::kNew, &heaps); }
|
|
{ heap->PrintToJSONObject(Heap::kOld, &heaps); }
|
|
}
|
|
|
|
{
|
|
JSONObject memory(&obj, "memoryUsage");
|
|
{ heap->PrintMemoryUsageJSON(&memory); }
|
|
}
|
|
|
|
Thread* thread = Thread::Current();
|
|
CountObjectsVisitor visitor(thread, NumCids());
|
|
{
|
|
HeapIterationScope iter(thread);
|
|
iter.IterateObjects(&visitor);
|
|
isolate->group()->VisitWeakPersistentHandles(&visitor);
|
|
}
|
|
|
|
{
|
|
JSONArray arr(&obj, "members");
|
|
Class& cls = Class::Handle();
|
|
for (intptr_t i = 3; i < top_; i++) {
|
|
if (!HasValidClassAt(i)) continue;
|
|
|
|
cls = At(i);
|
|
if (cls.IsNull()) continue;
|
|
|
|
JSONObject obj(&arr);
|
|
obj.AddProperty("type", "ClassHeapStats");
|
|
obj.AddProperty("class", cls);
|
|
intptr_t count = visitor.new_count_[i] + visitor.old_count_[i];
|
|
intptr_t size = visitor.new_size_[i] + visitor.old_size_[i];
|
|
obj.AddProperty64("instancesAccumulated", count);
|
|
obj.AddProperty64("accumulatedSize", size);
|
|
obj.AddProperty64("instancesCurrent", count);
|
|
obj.AddProperty64("bytesCurrent", size);
|
|
|
|
if (internal) {
|
|
{
|
|
JSONArray new_stats(&obj, "_new");
|
|
new_stats.AddValue(visitor.new_count_[i]);
|
|
new_stats.AddValue(visitor.new_size_[i]);
|
|
new_stats.AddValue(visitor.new_external_size_[i]);
|
|
}
|
|
{
|
|
JSONArray old_stats(&obj, "_old");
|
|
old_stats.AddValue(visitor.old_count_[i]);
|
|
old_stats.AddValue(visitor.old_size_[i]);
|
|
old_stats.AddValue(visitor.old_external_size_[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif // !PRODUCT
|
|
|
|
} // namespace dart
|