mirrored from https://chromium.googlesource.com/v8/v8.git
/
objects-printer.cc
3725 lines (3432 loc) · 127 KB
/
objects-printer.cc
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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <iomanip>
#include <memory>
#include "src/common/globals.h"
#include "src/diagnostics/disasm.h"
#include "src/diagnostics/disassembler.h"
#include "src/execution/isolate-utils-inl.h"
#include "src/heap/heap-inl.h" // For InOldSpace.
#include "src/heap/heap-write-barrier-inl.h" // For GetIsolateFromWritableObj.
#include "src/ic/handler-configuration-inl.h"
#include "src/init/bootstrapper.h"
#include "src/interpreter/bytecodes.h"
#include "src/objects/all-objects-inl.h"
#include "src/objects/code-kind.h"
#include "src/objects/instance-type.h"
#include "src/regexp/regexp.h"
#include "src/snapshot/embedded/embedded-data.h"
#include "src/strings/string-stream.h"
#include "src/utils/ostreams.h"
#if V8_ENABLE_WEBASSEMBLY
#include "src/debug/debug-wasm-objects-inl.h"
#include "src/wasm/wasm-code-manager.h"
#include "src/wasm/wasm-engine.h"
#include "src/wasm/wasm-objects-inl.h"
#endif // V8_ENABLE_WEBASSEMBLY
namespace v8 {
namespace internal {
namespace {
constexpr char kUnavailableString[] = "unavailable";
} // namespace
#ifdef OBJECT_PRINT
void Print(Tagged<Object> obj) {
// Output into debugger's command window if a debugger is attached.
DbgStdoutStream dbg_os;
Print(obj, dbg_os);
dbg_os << std::flush;
StdoutStream os;
Print(obj, os);
os << std::flush;
}
void Print(Tagged<Object> obj, std::ostream& os) {
if (IsSmi(obj)) {
os << "Smi: " << std::hex << "0x" << Smi::ToInt(obj);
os << std::dec << " (" << Smi::ToInt(obj) << ")\n";
} else {
HeapObject::cast(obj)->HeapObjectPrint(os);
}
}
namespace {
void PrintHeapObjectHeaderWithoutMap(Tagged<HeapObject> object,
std::ostream& os, const char* id) {
PtrComprCageBase cage_base = GetPtrComprCageBase();
os << reinterpret_cast<void*>(object.ptr()) << ": [";
if (id != nullptr) {
os << id;
} else {
os << object->map(cage_base)->instance_type();
}
os << "]";
if (ReadOnlyHeap::Contains(object)) {
os << " in ReadOnlySpace";
} else if (GetHeapFromWritableObject(object)->InOldSpace(object)) {
os << " in OldSpace";
}
}
template <typename T>
void PrintDictionaryContents(std::ostream& os, Tagged<T> dict) {
DisallowGarbageCollection no_gc;
ReadOnlyRoots roots = dict->GetReadOnlyRoots();
if (dict->Capacity() == 0) {
return;
}
#ifdef V8_ENABLE_SWISS_NAME_DICTIONARY
Isolate* isolate = GetIsolateFromWritableObject(dict);
// IterateEntries for SwissNameDictionary needs to create a handle.
HandleScope scope(isolate);
#endif
for (InternalIndex i : dict->IterateEntries()) {
Tagged<Object> k;
if (!dict->ToKey(roots, i, &k)) continue;
os << "\n ";
if (IsString(k)) {
String::cast(k)->PrintUC16(os);
} else {
os << Brief(k);
}
os << ": " << Brief(dict->ValueAt(i)) << " ";
dict->DetailsAt(i).PrintAsSlowTo(os, !T::kIsOrderedDictionaryType);
}
}
} // namespace
void HeapObject::PrintHeader(std::ostream& os, const char* id) {
PrintHeapObjectHeaderWithoutMap(*this, os, id);
PtrComprCageBase cage_base = GetPtrComprCageBase();
if (!SafeEquals(GetReadOnlyRoots().meta_map())) {
os << "\n - map: " << Brief(map(cage_base));
}
}
void HeapObject::HeapObjectPrint(std::ostream& os) {
PtrComprCageBase cage_base = GetPtrComprCageBase();
InstanceType instance_type = map(cage_base)->instance_type();
if (instance_type < FIRST_NONSTRING_TYPE) {
String::cast(*this)->StringPrint(os);
os << "\n";
return;
}
switch (instance_type) {
case AWAIT_CONTEXT_TYPE:
case BLOCK_CONTEXT_TYPE:
case CATCH_CONTEXT_TYPE:
case DEBUG_EVALUATE_CONTEXT_TYPE:
case EVAL_CONTEXT_TYPE:
case FUNCTION_CONTEXT_TYPE:
case MODULE_CONTEXT_TYPE:
case SCRIPT_CONTEXT_TYPE:
case WITH_CONTEXT_TYPE:
Context::cast(*this)->ContextPrint(os);
break;
case NATIVE_CONTEXT_TYPE:
NativeContext::cast(*this)->NativeContextPrint(os);
break;
case HASH_TABLE_TYPE:
ObjectHashTable::cast(*this)->ObjectHashTablePrint(os);
break;
case NAME_TO_INDEX_HASH_TABLE_TYPE:
NameToIndexHashTable::cast(*this)->NameToIndexHashTablePrint(os);
break;
case REGISTERED_SYMBOL_TABLE_TYPE:
RegisteredSymbolTable::cast(*this)->RegisteredSymbolTablePrint(os);
break;
case ORDERED_HASH_MAP_TYPE:
OrderedHashMap::cast(*this)->OrderedHashMapPrint(os);
break;
case ORDERED_HASH_SET_TYPE:
OrderedHashSet::cast(*this)->OrderedHashSetPrint(os);
break;
case ORDERED_NAME_DICTIONARY_TYPE:
OrderedNameDictionary::cast(*this)->OrderedNameDictionaryPrint(os);
break;
case NAME_DICTIONARY_TYPE:
NameDictionary::cast(*this)->NameDictionaryPrint(os);
break;
case GLOBAL_DICTIONARY_TYPE:
GlobalDictionary::cast(*this)->GlobalDictionaryPrint(os);
break;
case SIMPLE_NUMBER_DICTIONARY_TYPE:
FixedArray::cast(*this)->FixedArrayPrint(os);
break;
case NUMBER_DICTIONARY_TYPE:
NumberDictionary::cast(*this)->NumberDictionaryPrint(os);
break;
case EPHEMERON_HASH_TABLE_TYPE:
EphemeronHashTable::cast(*this)->EphemeronHashTablePrint(os);
break;
case TRANSITION_ARRAY_TYPE:
TransitionArray::cast(*this)->TransitionArrayPrint(os);
break;
case FILLER_TYPE:
os << "filler";
break;
case JS_API_OBJECT_TYPE:
case JS_ARRAY_ITERATOR_PROTOTYPE_TYPE:
case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
case JS_ERROR_TYPE:
case JS_ITERATOR_PROTOTYPE_TYPE:
case JS_MAP_ITERATOR_PROTOTYPE_TYPE:
case JS_OBJECT_PROTOTYPE_TYPE:
case JS_PROMISE_PROTOTYPE_TYPE:
case JS_REG_EXP_PROTOTYPE_TYPE:
case JS_SET_ITERATOR_PROTOTYPE_TYPE:
case JS_SET_PROTOTYPE_TYPE:
case JS_SPECIAL_API_OBJECT_TYPE:
case JS_STRING_ITERATOR_PROTOTYPE_TYPE:
case JS_TYPED_ARRAY_PROTOTYPE_TYPE:
JSObject::cast(*this)->JSObjectPrint(os);
break;
#if V8_ENABLE_WEBASSEMBLY
case WASM_INSTANCE_OBJECT_TYPE:
WasmInstanceObject::cast(*this)->WasmInstanceObjectPrint(os);
break;
case WASM_VALUE_OBJECT_TYPE:
WasmValueObject::cast(*this)->WasmValueObjectPrint(os);
break;
case WASM_EXCEPTION_PACKAGE_TYPE:
WasmExceptionPackage::cast(*this)->WasmExceptionPackagePrint(os);
break;
#endif // V8_ENABLE_WEBASSEMBLY
case INSTRUCTION_STREAM_TYPE:
InstructionStream::cast(*this)->InstructionStreamPrint(os);
break;
case CODE_TYPE:
Code::cast(*this)->CodePrint(os);
break;
case JS_SET_KEY_VALUE_ITERATOR_TYPE:
case JS_SET_VALUE_ITERATOR_TYPE:
JSSetIterator::cast(*this)->JSSetIteratorPrint(os);
break;
case JS_MAP_KEY_ITERATOR_TYPE:
case JS_MAP_KEY_VALUE_ITERATOR_TYPE:
case JS_MAP_VALUE_ITERATOR_TYPE:
JSMapIterator::cast(*this)->JSMapIteratorPrint(os);
break;
#define MAKE_TORQUE_CASE(Name, TYPE) \
case TYPE: \
Name::cast(*this)->Name##Print(os); \
break;
// Every class that has its fields defined in a .tq file and corresponds
// to exactly one InstanceType value is included in the following list.
TORQUE_INSTANCE_CHECKERS_SINGLE_FULLY_DEFINED(MAKE_TORQUE_CASE)
TORQUE_INSTANCE_CHECKERS_MULTIPLE_FULLY_DEFINED(MAKE_TORQUE_CASE)
#undef MAKE_TORQUE_CASE
case ALLOCATION_SITE_TYPE:
AllocationSite::cast(*this)->AllocationSitePrint(os);
break;
case LOAD_HANDLER_TYPE:
LoadHandler::cast(*this)->LoadHandlerPrint(os);
break;
case STORE_HANDLER_TYPE:
StoreHandler::cast(*this)->StoreHandlerPrint(os);
break;
case FEEDBACK_METADATA_TYPE:
FeedbackMetadata::cast(*this)->FeedbackMetadataPrint(os);
break;
case BIG_INT_BASE_TYPE:
BigIntBase::cast(*this)->BigIntBasePrint(os);
break;
case JS_CLASS_CONSTRUCTOR_TYPE:
case JS_PROMISE_CONSTRUCTOR_TYPE:
case JS_REG_EXP_CONSTRUCTOR_TYPE:
case JS_ARRAY_CONSTRUCTOR_TYPE:
#define TYPED_ARRAY_CONSTRUCTORS_SWITCH(Type, type, TYPE, Ctype) \
case TYPE##_TYPED_ARRAY_CONSTRUCTOR_TYPE:
TYPED_ARRAYS(TYPED_ARRAY_CONSTRUCTORS_SWITCH)
#undef TYPED_ARRAY_CONSTRUCTORS_SWITCH
JSFunction::cast(*this)->JSFunctionPrint(os);
break;
case INTERNALIZED_TWO_BYTE_STRING_TYPE:
case EXTERNAL_INTERNALIZED_TWO_BYTE_STRING_TYPE:
case INTERNALIZED_ONE_BYTE_STRING_TYPE:
case EXTERNAL_INTERNALIZED_ONE_BYTE_STRING_TYPE:
case UNCACHED_EXTERNAL_INTERNALIZED_TWO_BYTE_STRING_TYPE:
case UNCACHED_EXTERNAL_INTERNALIZED_ONE_BYTE_STRING_TYPE:
case SEQ_TWO_BYTE_STRING_TYPE:
case CONS_TWO_BYTE_STRING_TYPE:
case EXTERNAL_TWO_BYTE_STRING_TYPE:
case SLICED_TWO_BYTE_STRING_TYPE:
case THIN_TWO_BYTE_STRING_TYPE:
case SEQ_ONE_BYTE_STRING_TYPE:
case CONS_ONE_BYTE_STRING_TYPE:
case EXTERNAL_ONE_BYTE_STRING_TYPE:
case SLICED_ONE_BYTE_STRING_TYPE:
case THIN_ONE_BYTE_STRING_TYPE:
case UNCACHED_EXTERNAL_TWO_BYTE_STRING_TYPE:
case UNCACHED_EXTERNAL_ONE_BYTE_STRING_TYPE:
case SHARED_SEQ_TWO_BYTE_STRING_TYPE:
case SHARED_SEQ_ONE_BYTE_STRING_TYPE:
case SHARED_EXTERNAL_TWO_BYTE_STRING_TYPE:
case SHARED_EXTERNAL_ONE_BYTE_STRING_TYPE:
case SHARED_UNCACHED_EXTERNAL_TWO_BYTE_STRING_TYPE:
case SHARED_UNCACHED_EXTERNAL_ONE_BYTE_STRING_TYPE:
case JS_LAST_DUMMY_API_OBJECT_TYPE:
// TODO(all): Handle these types too.
os << "UNKNOWN TYPE " << map()->instance_type();
UNREACHABLE();
}
}
void ByteArray::ByteArrayPrint(std::ostream& os) {
PrintHeader(os, "ByteArray");
os << "\n - length: " << length()
<< "\n - begin: " << static_cast<void*>(begin()) << "\n";
}
void BytecodeArray::BytecodeArrayPrint(std::ostream& os) {
PrintHeader(os, "BytecodeArray");
os << "\n";
Disassemble(os);
}
void BytecodeWrapper::BytecodeWrapperPrint(std::ostream& os) {
PrintHeader(os, "BytecodeWrapper");
Isolate* isolate = GetIsolateForSandbox(*this);
os << "\n bytecode: " << Brief(bytecode(isolate));
}
void FreeSpace::FreeSpacePrint(std::ostream& os) {
os << "free space, size " << Size() << "\n";
}
bool JSObject::PrintProperties(std::ostream& os) {
if (HasFastProperties()) {
Tagged<DescriptorArray> descs = map()->instance_descriptors(GetIsolate());
int nof_inobject_properties = map()->GetInObjectProperties();
for (InternalIndex i : map()->IterateOwnDescriptors()) {
os << "\n ";
descs->GetKey(i)->NamePrint(os);
os << ": ";
PropertyDetails details = descs->GetDetails(i);
switch (details.location()) {
case PropertyLocation::kField: {
FieldIndex field_index = FieldIndex::ForDetails(map(), details);
os << Brief(RawFastPropertyAt(field_index));
break;
}
case PropertyLocation::kDescriptor:
os << Brief(descs->GetStrongValue(i));
break;
}
os << " ";
details.PrintAsFastTo(os, PropertyDetails::kForProperties);
if (details.location() == PropertyLocation::kField) {
int field_index = details.field_index();
if (field_index < nof_inobject_properties) {
os << ", location: in-object";
} else {
field_index -= nof_inobject_properties;
os << ", location: properties[" << field_index << "]";
}
} else {
os << ", location: descriptor";
}
}
return map()->NumberOfOwnDescriptors() > 0;
} else if (IsJSGlobalObject(*this)) {
PrintDictionaryContents(
os, JSGlobalObject::cast(*this)->global_dictionary(kAcquireLoad));
} else if constexpr (V8_ENABLE_SWISS_NAME_DICTIONARY_BOOL) {
PrintDictionaryContents(os, property_dictionary_swiss());
} else {
PrintDictionaryContents(os, property_dictionary());
}
return true;
}
namespace {
template <class T>
bool IsTheHoleAt(Tagged<T> array, int index) {
return false;
}
template <>
bool IsTheHoleAt(Tagged<FixedDoubleArray> array, int index) {
return array->is_the_hole(index);
}
template <class T>
double GetScalarElement(Tagged<T> array, int index) {
if (IsTheHoleAt(array, index)) {
return std::numeric_limits<double>::quiet_NaN();
}
return array->get_scalar(index);
}
template <class T>
void DoPrintElements(std::ostream& os, Tagged<Object> object, int length) {
const bool print_the_hole = std::is_same<T, FixedDoubleArray>::value;
Tagged<T> array = T::cast(object);
if (length == 0) return;
int previous_index = 0;
double previous_value = GetScalarElement(array, 0);
double value = 0.0;
int i;
for (i = 1; i <= length; i++) {
if (i < length) value = GetScalarElement(array, i);
bool values_are_nan = std::isnan(previous_value) && std::isnan(value);
if (i != length && (previous_value == value || values_are_nan) &&
IsTheHoleAt(array, i - 1) == IsTheHoleAt(array, i)) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": ";
if (print_the_hole && IsTheHoleAt(array, i - 1)) {
os << "<the_hole>";
} else {
os << previous_value;
}
previous_index = i;
previous_value = value;
}
}
template <typename ElementType>
void PrintTypedArrayElements(std::ostream& os, const ElementType* data_ptr,
size_t length, bool is_on_heap) {
if (length == 0) return;
size_t previous_index = 0;
if (i::v8_flags.mock_arraybuffer_allocator && !is_on_heap) {
// Don't try to print data that's not actually allocated.
os << "\n 0-" << length << ": <mocked array buffer bytes>";
return;
}
ElementType previous_value = data_ptr[0];
ElementType value = 0;
for (size_t i = 1; i <= length; i++) {
if (i < length) value = data_ptr[i];
if (i != length && previous_value == value) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": " << +previous_value;
previous_index = i;
previous_value = value;
}
}
template <typename T>
void PrintFixedArrayElements(std::ostream& os, Tagged<T> array, int capacity,
Tagged<Object> (*get)(Tagged<T>, int)) {
// Print in array notation for non-sparse arrays.
if (capacity == 0) return;
Tagged<Object> previous_value = get(array, 0);
Tagged<Object> value;
int previous_index = 0;
int i;
for (i = 1; i <= capacity; i++) {
if (i < capacity) value = get(array, i);
if (previous_value == value && i != capacity) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": " << Brief(previous_value);
previous_index = i;
previous_value = value;
}
}
template <typename T>
void PrintFixedArrayElements(std::ostream& os, Tagged<T> array) {
PrintFixedArrayElements<T>(
os, array, array->length(),
[](Tagged<T> xs, int i) { return Object::cast(xs->get(i)); });
}
void PrintDictionaryElements(std::ostream& os,
Tagged<FixedArrayBase> elements) {
// Print some internal fields
Tagged<NumberDictionary> dict = NumberDictionary::cast(elements);
if (dict->requires_slow_elements()) {
os << "\n - requires_slow_elements";
} else {
os << "\n - max_number_key: " << dict->max_number_key();
}
PrintDictionaryContents(os, dict);
}
void PrintSloppyArgumentElements(std::ostream& os, ElementsKind kind,
Tagged<SloppyArgumentsElements> elements) {
Tagged<FixedArray> arguments_store = elements->arguments();
os << "\n 0: context: " << Brief(elements->context())
<< "\n 1: arguments_store: " << Brief(arguments_store)
<< "\n parameter to context slot map:";
for (int i = 0; i < elements->length(); i++) {
Tagged<Object> mapped_entry = elements->mapped_entries(i, kRelaxedLoad);
os << "\n " << i << ": param(" << i << "): " << Brief(mapped_entry);
if (IsTheHole(mapped_entry)) {
os << " in the arguments_store[" << i << "]";
} else {
os << " in the context";
}
}
if (arguments_store->length() == 0) return;
os << "\n }"
<< "\n - arguments_store: " << Brief(arguments_store) << " "
<< ElementsKindToString(arguments_store->map()->elements_kind()) << " {";
if (kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS) {
PrintFixedArrayElements(os, arguments_store);
} else {
DCHECK_EQ(kind, SLOW_SLOPPY_ARGUMENTS_ELEMENTS);
PrintDictionaryElements(os, arguments_store);
}
}
void PrintEmbedderData(Isolate* isolate, std::ostream& os,
EmbedderDataSlot slot) {
DisallowGarbageCollection no_gc;
Tagged<Object> value = slot.load_tagged();
os << Brief(value);
void* raw_pointer;
if (slot.ToAlignedPointer(isolate, &raw_pointer)) {
os << ", aligned pointer: " << raw_pointer;
}
}
} // namespace
void JSObject::PrintElements(std::ostream& os) {
// Don't call GetElementsKind, its validation code can cause the printer to
// fail when debugging.
os << " - elements: " << Brief(elements()) << " {";
switch (map()->elements_kind()) {
case HOLEY_SMI_ELEMENTS:
case PACKED_SMI_ELEMENTS:
case HOLEY_ELEMENTS:
case HOLEY_FROZEN_ELEMENTS:
case HOLEY_SEALED_ELEMENTS:
case HOLEY_NONEXTENSIBLE_ELEMENTS:
case PACKED_ELEMENTS:
case PACKED_FROZEN_ELEMENTS:
case PACKED_SEALED_ELEMENTS:
case PACKED_NONEXTENSIBLE_ELEMENTS:
case FAST_STRING_WRAPPER_ELEMENTS:
case SHARED_ARRAY_ELEMENTS: {
PrintFixedArrayElements(os, FixedArray::cast(elements()));
break;
}
case HOLEY_DOUBLE_ELEMENTS:
case PACKED_DOUBLE_ELEMENTS: {
DoPrintElements<FixedDoubleArray>(os, elements(), elements()->length());
break;
}
#define PRINT_ELEMENTS(Type, type, TYPE, elementType) \
case TYPE##_ELEMENTS: { \
size_t length = JSTypedArray::cast(*this)->GetLength(); \
bool is_on_heap = JSTypedArray::cast(*this)->is_on_heap(); \
const elementType* data_ptr = \
static_cast<const elementType*>(JSTypedArray::cast(*this)->DataPtr()); \
PrintTypedArrayElements<elementType>(os, data_ptr, length, is_on_heap); \
break; \
}
TYPED_ARRAYS(PRINT_ELEMENTS)
RAB_GSAB_TYPED_ARRAYS(PRINT_ELEMENTS)
#undef PRINT_ELEMENTS
case DICTIONARY_ELEMENTS:
case SLOW_STRING_WRAPPER_ELEMENTS:
PrintDictionaryElements(os, elements());
break;
case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
case SLOW_SLOPPY_ARGUMENTS_ELEMENTS:
PrintSloppyArgumentElements(os, map()->elements_kind(),
SloppyArgumentsElements::cast(elements()));
break;
case WASM_ARRAY_ELEMENTS:
// WasmArrayPrint() should be called intead.
UNREACHABLE();
case NO_ELEMENTS:
break;
}
os << "\n }\n";
}
static void JSObjectPrintHeader(std::ostream& os, Tagged<JSObject> obj,
const char* id) {
Isolate* isolate = obj->GetIsolate();
obj->PrintHeader(os, id);
// Don't call GetElementsKind, its validation code can cause the printer to
// fail when debugging.
os << " [";
if (obj->HasFastProperties()) {
os << "FastProperties";
} else {
os << "DictionaryProperties";
}
PrototypeIterator iter(isolate, obj);
os << "]\n - prototype: " << Brief(iter.GetCurrent());
os << "\n - elements: " << Brief(obj->elements()) << " ["
<< ElementsKindToString(obj->map()->elements_kind());
if (obj->elements()->IsCowArray()) os << " (COW)";
os << "]";
Tagged<Object> hash = Object::GetHash(obj);
if (IsSmi(hash)) {
os << "\n - hash: " << Brief(hash);
}
if (obj->GetEmbedderFieldCount() > 0) {
os << "\n - embedder fields: " << obj->GetEmbedderFieldCount();
}
}
static void JSObjectPrintBody(std::ostream& os, Tagged<JSObject> obj,
bool print_elements = true) {
os << "\n - properties: ";
Tagged<Object> properties_or_hash = obj->raw_properties_or_hash(kRelaxedLoad);
if (!IsSmi(properties_or_hash)) {
os << Brief(properties_or_hash);
}
os << "\n - All own properties (excluding elements): {";
if (obj->PrintProperties(os)) os << "\n ";
os << "}\n";
if (print_elements) {
size_t length = IsJSTypedArray(obj) ? JSTypedArray::cast(obj)->GetLength()
: obj->elements()->length();
if (length > 0) obj->PrintElements(os);
}
int embedder_fields = obj->GetEmbedderFieldCount();
if (embedder_fields > 0) {
Isolate* isolate = GetIsolateForSandbox(obj);
os << " - embedder fields = {";
for (int i = 0; i < embedder_fields; i++) {
os << "\n ";
PrintEmbedderData(isolate, os, EmbedderDataSlot(obj, i));
}
os << "\n }\n";
}
}
void JSObject::JSObjectPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, nullptr);
JSObjectPrintBody(os, *this);
}
void JSExternalObject::JSExternalObjectPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, nullptr);
os << "\n - external value: " << value();
JSObjectPrintBody(os, *this);
}
void JSGeneratorObject::JSGeneratorObjectPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSGeneratorObject");
os << "\n - function: " << Brief(function());
os << "\n - context: " << Brief(context());
os << "\n - receiver: " << Brief(receiver());
if (is_executing() || is_closed()) {
os << "\n - input: " << Brief(input_or_debug_pos());
} else {
DCHECK(is_suspended());
os << "\n - debug pos: " << Brief(input_or_debug_pos());
}
const char* mode = "(invalid)";
switch (resume_mode()) {
case kNext:
mode = ".next()";
break;
case kReturn:
mode = ".return()";
break;
case kThrow:
mode = ".throw()";
break;
}
os << "\n - resume mode: " << mode;
os << "\n - continuation: " << continuation();
if (is_closed()) os << " (closed)";
if (is_executing()) os << " (executing)";
if (is_suspended()) os << " (suspended)";
if (is_suspended()) {
DisallowGarbageCollection no_gc;
Tagged<SharedFunctionInfo> fun_info = function()->shared();
if (fun_info->HasSourceCode()) {
Tagged<Script> script = Script::cast(fun_info->script());
Tagged<String> script_name = IsString(script->name())
? Tagged<String>::cast(script->name())
: GetReadOnlyRoots().empty_string();
os << "\n - source position: ";
// Can't collect source positions here if not available as that would
// allocate memory.
Isolate* isolate = GetIsolate();
if (fun_info->HasBytecodeArray() &&
fun_info->GetBytecodeArray(isolate)->HasSourcePositionTable()) {
os << source_position();
os << " (";
script_name->PrintUC16(os);
Script::PositionInfo info;
script->GetPositionInfo(source_position(), &info);
os << ", line " << info.line + 1;
os << ", column " << info.column + 1;
} else {
os << kUnavailableString;
}
os << ")";
}
}
os << "\n - register file: " << Brief(parameters_and_registers());
JSObjectPrintBody(os, *this);
}
void JSArray::JSArrayPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSArray");
os << "\n - length: " << Brief(this->length());
JSObjectPrintBody(os, *this);
}
void JSPromise::JSPromisePrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSPromise");
os << "\n - status: " << JSPromise::Status(status());
if (status() == Promise::kPending) {
os << "\n - reactions: " << Brief(reactions());
} else {
os << "\n - result: " << Brief(result());
}
os << "\n - has_handler: " << has_handler();
os << "\n - handled_hint: " << handled_hint();
os << "\n - is_silent: " << is_silent();
JSObjectPrintBody(os, *this);
}
void JSRegExp::JSRegExpPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSRegExp");
os << "\n - data: " << Brief(data());
os << "\n - source: " << Brief(source());
FlagsBuffer buffer;
os << "\n - flags: " << JSRegExp::FlagsToString(flags(), &buffer);
JSObjectPrintBody(os, *this);
}
void JSRegExpStringIterator::JSRegExpStringIteratorPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSRegExpStringIterator");
os << "\n - regex: " << Brief(iterating_reg_exp());
os << "\n - string: " << Brief(iterated_string());
os << "\n - done: " << done();
os << "\n - global: " << global();
os << "\n - unicode: " << unicode();
JSObjectPrintBody(os, *this);
}
void Symbol::SymbolPrint(std::ostream& os) {
PrintHeader(os, "Symbol");
os << "\n - hash: " << hash();
os << "\n - description: " << Brief(description());
if (IsUndefined(description())) {
os << " (" << PrivateSymbolToName() << ")";
}
os << "\n - private: " << is_private();
os << "\n - private_name: " << is_private_name();
os << "\n - private_brand: " << is_private_brand();
os << "\n";
}
void DescriptorArray::DescriptorArrayPrint(std::ostream& os) {
PrintHeader(os, "DescriptorArray");
os << "\n - enum_cache: ";
if (enum_cache()->keys()->length() == 0) {
os << "empty";
} else {
os << enum_cache()->keys()->length();
os << "\n - keys: " << Brief(enum_cache()->keys());
os << "\n - indices: " << Brief(enum_cache()->indices());
}
os << "\n - nof slack descriptors: " << number_of_slack_descriptors();
os << "\n - nof descriptors: " << number_of_descriptors();
const auto raw = raw_gc_state(kRelaxedLoad);
os << "\n - raw gc state: mc epoch "
<< DescriptorArrayMarkingState::Epoch::decode(raw) << ", marked "
<< DescriptorArrayMarkingState::Marked::decode(raw) << ", delta "
<< DescriptorArrayMarkingState::Delta::decode(raw);
PrintDescriptors(os);
}
namespace {
void PrintFixedArrayWithHeader(std::ostream& os, Tagged<FixedArray> array,
const char* type) {
array->PrintHeader(os, type);
os << "\n - length: " << array->length();
PrintFixedArrayElements(os, array);
os << "\n";
}
template <typename T>
void PrintWeakArrayElements(std::ostream& os, T* array) {
// Print in array notation for non-sparse arrays.
MaybeObject previous_value =
array->length() > 0 ? array->get(0) : MaybeObject(kNullAddress);
MaybeObject value;
int previous_index = 0;
int i;
for (i = 1; i <= array->length(); i++) {
if (i < array->length()) value = array->get(i);
if (previous_value == value && i != array->length()) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": " << Brief(previous_value);
previous_index = i;
previous_value = value;
}
}
} // namespace
void ObjectBoilerplateDescription::ObjectBoilerplateDescriptionPrint(
std::ostream& os) {
PrintHeader(os, "ObjectBoilerplateDescription");
os << "\n - capacity: " << capacity();
os << "\n - backing_store_size: " << backing_store_size();
os << "\n - flags: " << flags();
os << "\n - elements:";
PrintFixedArrayElements<ObjectBoilerplateDescription>(
os, *this, capacity(),
[](Tagged<ObjectBoilerplateDescription> xs, int i) {
return xs->get(i);
});
os << "\n";
}
void ClassBoilerplate::ClassBoilerplatePrint(std::ostream& os) {
PrintHeader(os, "ClassBoilerplate");
os << "\n - arguments_count: " << arguments_count();
os << "\n - static_properties_template: " << static_properties_template();
os << "\n - static_elements_template: " << static_elements_template();
os << "\n - static_computed_properties: " << static_computed_properties();
os << "\n - instance_properties_template: " << instance_properties_template();
os << "\n - instance_elements_template: " << instance_elements_template();
os << "\n - instance_computed_properties: " << instance_computed_properties();
os << "\n";
}
void EmbedderDataArray::EmbedderDataArrayPrint(std::ostream& os) {
Isolate* isolate = GetIsolateForSandbox(*this);
PrintHeader(os, "EmbedderDataArray");
os << "\n - length: " << length();
EmbedderDataSlot start(*this, 0);
EmbedderDataSlot end(*this, length());
for (EmbedderDataSlot slot = start; slot < end; ++slot) {
os << "\n ";
PrintEmbedderData(isolate, os, slot);
}
os << "\n";
}
void FixedArray::FixedArrayPrint(std::ostream& os) {
PrintFixedArrayWithHeader(os, *this, "FixedArray");
}
void ArrayList::ArrayListPrint(std::ostream& os) {
PrintHeader(os, "ArrayList");
os << "\n - capacity: " << capacity();
os << "\n - length: " << length();
os << "\n - elements:";
PrintFixedArrayElements<ArrayList>(
os, *this, length(),
[](Tagged<ArrayList> xs, int i) { return xs->get(i); });
os << "\n";
}
void ScriptContextTable::ScriptContextTablePrint(std::ostream& os) {
PrintHeader(os, "ScriptContextTable");
os << "\n - capacity: " << capacity();
os << "\n - length: " << length(kAcquireLoad);
os << "\n - names_to_context_index: " << names_to_context_index();
os << "\n - elements:";
PrintFixedArrayElements<ScriptContextTable>(
os, *this, length(kAcquireLoad),
[](Tagged<ScriptContextTable> xs, int i) {
return Object::cast(xs->get(i));
});
os << "\n";
}
void RegExpMatchInfo::RegExpMatchInfoPrint(std::ostream& os) {
PrintHeader(os, "RegExpMatchInfo");
os << "\n - capacity: " << capacity();
os << "\n - number_of_capture_registers: " << number_of_capture_registers();
os << "\n - last_subject: " << last_subject();
os << "\n - last_input: " << last_input();
os << "\n - captures:";
PrintFixedArrayElements<RegExpMatchInfo>(
os, Tagged{*this}, capacity(), [](Tagged<RegExpMatchInfo> xs, int i) {
return Object::cast(xs->get(i));
});
os << "\n";
}
void ExternalPointerArray::ExternalPointerArrayPrint(std::ostream& os) {
PrintHeader(os, "ExternalPointerArray");
os << "\n - length: " << length();
os << "\n";
}
void SloppyArgumentsElements::SloppyArgumentsElementsPrint(std::ostream& os) {
PrintHeader(os, "SloppyArgumentsElements");
os << "\n - length: " << length();
os << "\n - context: " << Brief(context());
os << "\n - arguments: " << Brief(arguments());
os << "\n - mapped_entries:";
PrintFixedArrayElements<SloppyArgumentsElements>(
os, Tagged(*this), length(),
[](Tagged<SloppyArgumentsElements> xs, int i) {
return xs->mapped_entries(i, kRelaxedLoad);
});
os << '\n';
}
namespace {
const char* SideEffectType2String(SideEffectType type) {
switch (type) {
case SideEffectType::kHasSideEffect:
return "kHasSideEffect";
case SideEffectType::kHasNoSideEffect:
return "kHasNoSideEffect";
case SideEffectType::kHasSideEffectToReceiver:
return "kHasSideEffectToReceiver";
}
}
} // namespace
void AccessorInfo::AccessorInfoPrint(std::ostream& os) {
TorqueGeneratedAccessorInfo<AccessorInfo, HeapObject>::AccessorInfoPrint(os);
os << " - is_special_data_property: " << is_special_data_property();
os << "\n - is_sloppy: " << is_sloppy();
os << "\n - replace_on_access: " << replace_on_access();
os << "\n - getter_side_effect_type: "
<< SideEffectType2String(getter_side_effect_type());
os << "\n - setter_side_effect_type: "
<< SideEffectType2String(setter_side_effect_type());
os << "\n - initial_attributes: " << initial_property_attributes();
Isolate* isolate;
if (GetIsolateFromHeapObject(*this, &isolate)) {
os << "\n - getter: " << reinterpret_cast<void*>(getter(isolate));
if (USE_SIMULATOR_BOOL) {
os << "\n - maybe_redirected_getter: "
<< reinterpret_cast<void*>(maybe_redirected_getter(isolate));
}
os << "\n - setter: " << reinterpret_cast<void*>(setter(isolate));
} else {
os << "\n - getter: " << kUnavailableString;
os << "\n - maybe_redirected_getter: " << kUnavailableString;
os << "\n - setter: " << kUnavailableString;
}
os << '\n';
}
namespace {
void PrintContextWithHeader(std::ostream& os, Tagged<Context> context,
const char* type) {
context->PrintHeader(os, type);
os << "\n - type: " << context->map()->instance_type();
os << "\n - scope_info: " << Brief(context->scope_info());
os << "\n - previous: " << Brief(context->unchecked_previous());
os << "\n - native_context: " << Brief(context->native_context());
if (context->scope_info()->HasContextExtensionSlot()) {
os << "\n - extension: " << context->extension();
}
os << "\n - length: " << context->length();
os << "\n - elements:";
PrintFixedArrayElements(os, context);
os << "\n";
}
} // namespace
void Context::ContextPrint(std::ostream& os) {
PrintContextWithHeader(os, *this, "Context");
}
void NativeContext::NativeContextPrint(std::ostream& os) {
PrintContextWithHeader(os, *this, "NativeContext");
os << " - microtask_queue: " << microtask_queue() << "\n";
}
namespace {
using DataPrinter = std::function<void(InternalIndex)>;
// Prints the data associated with each key (but no headers or other meta
// data) in a hash table. Works on different hash table types, like the
// subtypes of HashTable and OrderedHashTable. |print_data_at| is given an
// index into the table (where a valid key resides) and prints the data at
// that index, like just the value (in case of a hash map), or value and
// property details (in case of a property dictionary). No leading space
// required or trailing newline required. It can be null/non-callable
// std::function to indicate that there is no associcated data to be printed
// (for example in case of a hash set).
template <typename T>
void PrintTableContentsGeneric(std::ostream& os, T dict,
DataPrinter print_data_at) {
DisallowGarbageCollection no_gc;