Régis Crelier
62325f95b4
Refactor Kernel::CollectTokenPositionsFor, but do not try to factorize code for fields and functions, as too many handles would need to be passed around. Bytecode reading creates duplicate script objects requiring scripts to be matched by their url rather than by their raw address when collecting token positions in bytecode. However, url comparison is not yet used, because collecting token positions in the duplicated script 'dart:core/map.dart' (in default mode) causes crashes in kernel reading. Will revisit. Fix service test valid_source locations_test.dart and make sure fields are properly reloaded, except fields injected by fasta. Remove unused argument 'record' of KernelReaderHelper::ReadPosition(). Handle bytecode stub frame in IsAsyncMachinery() tester in debugger. Change-Id: Ifbddcaec00e0696f7de13c5cf1e74380b31d2419 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112402 Commit-Queue: Régis Crelier <regis@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>
679 lines
23 KiB
C++
679 lines
23 KiB
C++
// Copyright (c) 2015, 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/globals.h"
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#if !defined(PRODUCT) && !defined(DART_PRECOMPILED_RUNTIME)
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#include "vm/source_report.h"
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#include "vm/compiler/jit/compiler.h"
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#include "vm/isolate.h"
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#include "vm/kernel_loader.h"
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#include "vm/object.h"
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#include "vm/object_store.h"
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#include "vm/profiler.h"
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#include "vm/profiler_service.h"
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namespace dart {
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const char* SourceReport::kCallSitesStr = "_CallSites";
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const char* SourceReport::kCoverageStr = "Coverage";
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const char* SourceReport::kPossibleBreakpointsStr = "PossibleBreakpoints";
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const char* SourceReport::kProfileStr = "_Profile";
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SourceReport::SourceReport(intptr_t report_set, CompileMode compile_mode)
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: report_set_(report_set),
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compile_mode_(compile_mode),
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thread_(NULL),
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script_(NULL),
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start_pos_(TokenPosition::kNoSource),
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end_pos_(TokenPosition::kNoSource),
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profile_(Isolate::Current()),
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next_script_index_(0) {}
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SourceReport::~SourceReport() {
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ClearScriptTable();
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}
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void SourceReport::ClearScriptTable() {
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for (intptr_t i = 0; i < script_table_entries_.length(); i++) {
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delete script_table_entries_[i];
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script_table_entries_[i] = NULL;
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}
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script_table_entries_.Clear();
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script_table_.Clear();
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next_script_index_ = 0;
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}
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void SourceReport::Init(Thread* thread,
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const Script* script,
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TokenPosition start_pos,
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TokenPosition end_pos) {
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thread_ = thread;
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script_ = script;
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start_pos_ = start_pos;
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end_pos_ = end_pos;
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ClearScriptTable();
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if (IsReportRequested(kProfile)) {
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// Build the profile.
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SampleFilter samplesForIsolate(thread_->isolate()->main_port(),
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Thread::kMutatorTask, -1, -1);
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profile_.Build(thread, &samplesForIsolate, Profiler::sample_buffer(),
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Profile::kNoTags);
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}
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}
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bool SourceReport::IsReportRequested(ReportKind report_kind) {
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return (report_set_ & report_kind) != 0;
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}
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bool SourceReport::ShouldSkipFunction(const Function& func) {
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// TODO(32315): Verify that the check is still needed after the issue is
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// resolved.
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if (!func.token_pos().IsReal() || !func.end_token_pos().IsReal()) {
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// At least one of the token positions is not known.
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return true;
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}
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if (script_ != NULL && !script_->IsNull()) {
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if (func.script() != script_->raw()) {
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// The function is from the wrong script.
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return true;
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}
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if (((start_pos_ > TokenPosition::kMinSource) &&
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(func.end_token_pos() < start_pos_)) ||
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((end_pos_ > TokenPosition::kMinSource) &&
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(func.token_pos() > end_pos_))) {
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// The function does not intersect with the requested token range.
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return true;
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}
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}
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// These don't have unoptimized code and are only used for synthetic stubs.
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if (func.ForceOptimize()) return true;
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switch (func.kind()) {
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case RawFunction::kRegularFunction:
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case RawFunction::kClosureFunction:
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case RawFunction::kImplicitClosureFunction:
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case RawFunction::kImplicitStaticGetter:
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case RawFunction::kFieldInitializer:
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case RawFunction::kGetterFunction:
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case RawFunction::kSetterFunction:
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case RawFunction::kConstructor:
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break;
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default:
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return true;
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}
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if (func.is_abstract() || func.IsImplicitConstructor() ||
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func.IsRedirectingFactory() || func.is_no_such_method_forwarder()) {
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return true;
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}
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// Note that context_scope() remains null for closures declared in bytecode,
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// because the same information is retrieved from the parent's local variable
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// descriptors.
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// See IsLocalFunction() case in BytecodeReader::ComputeLocalVarDescriptors.
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if (!func.is_declared_in_bytecode() && func.IsNonImplicitClosureFunction() &&
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(func.context_scope() == ContextScope::null())) {
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// TODO(iposva): This can arise if we attempt to compile an inner function
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// before we have compiled its enclosing function or if the enclosing
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// function failed to compile.
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return true;
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}
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return false;
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}
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bool SourceReport::ShouldSkipField(const Field& field) {
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if (!field.token_pos().IsReal() || !field.end_token_pos().IsReal()) {
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// At least one of the token positions is not known.
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return true;
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}
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if (script_ != NULL && !script_->IsNull()) {
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if (field.Script() != script_->raw()) {
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// The field is from the wrong script.
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return true;
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}
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if (((start_pos_ > TokenPosition::kMinSource) &&
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(field.end_token_pos() < start_pos_)) ||
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((end_pos_ > TokenPosition::kMinSource) &&
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(field.token_pos() > end_pos_))) {
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// The field does not intersect with the requested token range.
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return true;
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}
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}
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return false;
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}
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intptr_t SourceReport::GetScriptIndex(const Script& script) {
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ScriptTableEntry wrapper;
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const String& url = String::Handle(zone(), script.url());
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wrapper.key = &url;
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wrapper.script = &Script::Handle(zone(), script.raw());
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ScriptTableEntry* pair = script_table_.LookupValue(&wrapper);
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if (pair != NULL) {
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return pair->index;
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}
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ScriptTableEntry* tmp = new ScriptTableEntry();
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tmp->key = &url;
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tmp->index = next_script_index_++;
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tmp->script = wrapper.script;
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script_table_entries_.Add(tmp);
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script_table_.Insert(tmp);
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ASSERT(script_table_entries_.length() == next_script_index_);
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#if defined(DEBUG)
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VerifyScriptTable();
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#endif
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return tmp->index;
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}
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#if defined(DEBUG)
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void SourceReport::VerifyScriptTable() {
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for (intptr_t i = 0; i < script_table_entries_.length(); i++) {
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const String* url = script_table_entries_[i]->key;
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const Script* script = script_table_entries_[i]->script;
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intptr_t index = script_table_entries_[i]->index;
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ASSERT(i == index);
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const String& url2 = String::Handle(zone(), script->url());
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ASSERT(url2.Equals(*url));
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ScriptTableEntry wrapper;
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wrapper.key = &url2;
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wrapper.script = &Script::Handle(zone(), script->raw());
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ScriptTableEntry* pair = script_table_.LookupValue(&wrapper);
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ASSERT(i == pair->index);
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}
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}
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#endif
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bool SourceReport::ScriptIsLoadedByLibrary(const Script& script,
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const Library& lib) {
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const Array& scripts = Array::Handle(zone(), lib.LoadedScripts());
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for (intptr_t j = 0; j < scripts.Length(); j++) {
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if (scripts.At(j) == script.raw()) {
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return true;
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}
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}
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return false;
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}
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void SourceReport::PrintCallSitesData(JSONObject* jsobj,
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const Function& function,
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const Code& code) {
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if (code.IsNull()) {
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// TODO(regis): implement for bytecode.
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return;
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}
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const TokenPosition begin_pos = function.token_pos();
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const TokenPosition end_pos = function.end_token_pos();
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ZoneGrowableArray<const ICData*>* ic_data_array =
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new (zone()) ZoneGrowableArray<const ICData*>();
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function.RestoreICDataMap(ic_data_array, false /* clone ic-data */);
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const PcDescriptors& descriptors =
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PcDescriptors::Handle(zone(), code.pc_descriptors());
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JSONArray sites(jsobj, "callSites");
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PcDescriptors::Iterator iter(
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descriptors,
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RawPcDescriptors::kIcCall | RawPcDescriptors::kUnoptStaticCall);
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while (iter.MoveNext()) {
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HANDLESCOPE(thread());
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// TODO(zra): Remove this bailout once DBC has reliable ICData.
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#if defined(TARGET_ARCH_DBC)
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if (iter.DeoptId() >= ic_data_array->length()) {
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continue;
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}
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#else
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ASSERT(iter.DeoptId() < ic_data_array->length());
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#endif
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const ICData* ic_data = (*ic_data_array)[iter.DeoptId()];
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if (ic_data != NULL) {
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const TokenPosition token_pos = iter.TokenPos();
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if ((token_pos < begin_pos) || (token_pos > end_pos)) {
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// Does not correspond to a valid source position.
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continue;
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}
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ic_data->PrintToJSONArray(sites, token_pos);
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}
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}
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}
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void SourceReport::PrintCoverageData(JSONObject* jsobj,
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const Function& function,
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const Code& code) {
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if (code.IsNull()) {
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// TODO(regis): implement for bytecode.
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return;
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}
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const TokenPosition begin_pos = function.token_pos();
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const TokenPosition end_pos = function.end_token_pos();
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ZoneGrowableArray<const ICData*>* ic_data_array =
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new (zone()) ZoneGrowableArray<const ICData*>();
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function.RestoreICDataMap(ic_data_array, false /* clone ic-data */);
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const PcDescriptors& descriptors =
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PcDescriptors::Handle(zone(), code.pc_descriptors());
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const int kCoverageNone = 0;
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const int kCoverageMiss = 1;
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const int kCoverageHit = 2;
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intptr_t func_length = (end_pos.Pos() - begin_pos.Pos()) + 1;
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GrowableArray<char> coverage(func_length);
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coverage.SetLength(func_length);
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for (int i = 0; i < func_length; i++) {
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coverage[i] = kCoverageNone;
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}
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if (function.WasExecuted()) {
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coverage[0] = kCoverageHit;
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} else {
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coverage[0] = kCoverageMiss;
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}
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PcDescriptors::Iterator iter(
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descriptors,
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RawPcDescriptors::kIcCall | RawPcDescriptors::kUnoptStaticCall);
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while (iter.MoveNext()) {
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HANDLESCOPE(thread());
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// TODO(zra): Remove this bailout once DBC has reliable ICData.
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#if defined(TARGET_ARCH_DBC)
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if (iter.DeoptId() >= ic_data_array->length()) {
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continue;
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}
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#else
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ASSERT(iter.DeoptId() < ic_data_array->length());
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#endif
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const ICData* ic_data = (*ic_data_array)[iter.DeoptId()];
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if (ic_data != NULL) {
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const TokenPosition token_pos = iter.TokenPos();
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if ((token_pos < begin_pos) || (token_pos > end_pos)) {
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// Does not correspond to a valid source position.
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continue;
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}
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intptr_t count = ic_data->AggregateCount();
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intptr_t token_offset = token_pos.Pos() - begin_pos.Pos();
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if (count > 0) {
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coverage[token_offset] = kCoverageHit;
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} else {
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if (coverage[token_offset] == kCoverageNone) {
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coverage[token_offset] = kCoverageMiss;
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}
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}
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}
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}
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JSONObject cov(jsobj, "coverage");
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{
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JSONArray hits(&cov, "hits");
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for (int i = 0; i < func_length; i++) {
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if (coverage[i] == kCoverageHit) {
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// Add the token position of the hit.
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hits.AddValue(begin_pos.Pos() + i);
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}
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}
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}
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{
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JSONArray misses(&cov, "misses");
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for (int i = 0; i < func_length; i++) {
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if (coverage[i] == kCoverageMiss) {
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// Add the token position of the miss.
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misses.AddValue(begin_pos.Pos() + i);
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}
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}
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}
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}
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void SourceReport::PrintPossibleBreakpointsData(JSONObject* jsobj,
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const Function& func,
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const Code& code) {
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const TokenPosition begin_pos = func.token_pos();
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const TokenPosition end_pos = func.end_token_pos();
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intptr_t func_length = (end_pos.Pos() - begin_pos.Pos()) + 1;
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GrowableArray<char> possible(func_length);
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possible.SetLength(func_length);
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for (int i = 0; i < func_length; i++) {
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possible[i] = false;
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}
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if (code.IsNull()) {
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const Bytecode& bytecode = Bytecode::Handle(func.bytecode());
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ASSERT(!bytecode.IsNull());
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kernel::BytecodeSourcePositionsIterator iter(zone(), bytecode);
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intptr_t token_offset = -1;
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uword pc_offset = kUwordMax;
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// Ignore all possible breakpoint positions until the first DebugCheck
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// opcode of the function.
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const uword debug_check_pc = bytecode.GetFirstDebugCheckOpcodePc();
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if (debug_check_pc != 0) {
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const uword debug_check_pc_offset =
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debug_check_pc - bytecode.PayloadStart();
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while (iter.MoveNext()) {
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if (pc_offset != kUwordMax) {
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// Check that there is at least one 'debug checked' opcode in the last
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// source position range.
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if (bytecode.GetDebugCheckedOpcodeReturnAddress(
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pc_offset, iter.PcOffset()) != 0) {
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possible[token_offset] = true;
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}
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pc_offset = kUwordMax;
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}
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const TokenPosition token_pos = iter.TokenPos();
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if ((token_pos < begin_pos) || (token_pos > end_pos)) {
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// Does not correspond to a valid source position.
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continue;
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}
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if (iter.PcOffset() < debug_check_pc_offset) {
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// No breakpoints in prologue.
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continue;
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}
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pc_offset = iter.PcOffset();
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token_offset = token_pos.Pos() - begin_pos.Pos();
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}
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}
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if (pc_offset != kUwordMax && bytecode.GetDebugCheckedOpcodeReturnAddress(
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pc_offset, bytecode.Size()) != 0) {
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possible[token_offset] = true;
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}
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} else {
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const uint8_t kSafepointKind =
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(RawPcDescriptors::kIcCall | RawPcDescriptors::kUnoptStaticCall |
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RawPcDescriptors::kRuntimeCall);
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const PcDescriptors& descriptors =
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PcDescriptors::Handle(zone(), code.pc_descriptors());
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PcDescriptors::Iterator iter(descriptors, kSafepointKind);
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while (iter.MoveNext()) {
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const TokenPosition token_pos = iter.TokenPos();
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if ((token_pos < begin_pos) || (token_pos > end_pos)) {
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// Does not correspond to a valid source position.
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continue;
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}
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intptr_t token_offset = token_pos.Pos() - begin_pos.Pos();
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possible[token_offset] = true;
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}
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}
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JSONArray bpts(jsobj, "possibleBreakpoints");
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for (int i = 0; i < func_length; i++) {
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if (possible[i]) {
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// Add the token position.
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bpts.AddValue(begin_pos.Pos() + i);
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}
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}
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}
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void SourceReport::PrintProfileData(JSONObject* jsobj,
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ProfileFunction* profile_function) {
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ASSERT(profile_function != NULL);
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ASSERT(profile_function->NumSourcePositions() > 0);
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{
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JSONObject profile(jsobj, "profile");
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{
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JSONObject profileData(&profile, "metadata");
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profileData.AddProperty("sampleCount", profile_.sample_count());
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}
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// Positions.
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{
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JSONArray positions(&profile, "positions");
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for (intptr_t i = 0; i < profile_function->NumSourcePositions(); i++) {
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const ProfileFunctionSourcePosition& position =
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profile_function->GetSourcePosition(i);
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if (position.token_pos().IsSourcePosition()) {
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// Add as an integer.
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positions.AddValue(position.token_pos().Pos());
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} else {
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// Add as a string.
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positions.AddValue(position.token_pos().ToCString());
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}
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}
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}
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// Exclusive ticks.
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{
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JSONArray exclusiveTicks(&profile, "exclusiveTicks");
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for (intptr_t i = 0; i < profile_function->NumSourcePositions(); i++) {
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const ProfileFunctionSourcePosition& position =
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profile_function->GetSourcePosition(i);
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exclusiveTicks.AddValue(position.exclusive_ticks());
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}
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}
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// Inclusive ticks.
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{
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JSONArray inclusiveTicks(&profile, "inclusiveTicks");
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for (intptr_t i = 0; i < profile_function->NumSourcePositions(); i++) {
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const ProfileFunctionSourcePosition& position =
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profile_function->GetSourcePosition(i);
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inclusiveTicks.AddValue(position.inclusive_ticks());
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}
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}
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}
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}
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void SourceReport::PrintScriptTable(JSONArray* scripts) {
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for (intptr_t i = 0; i < script_table_entries_.length(); i++) {
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const Script* script = script_table_entries_[i]->script;
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scripts->AddValue(*script);
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}
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}
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void SourceReport::VisitFunction(JSONArray* jsarr, const Function& func) {
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if (ShouldSkipFunction(func)) {
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return;
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}
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const Script& script = Script::Handle(zone(), func.script());
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const TokenPosition begin_pos = func.token_pos();
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const TokenPosition end_pos = func.end_token_pos();
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Code& code = Code::Handle(zone(), func.unoptimized_code());
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Bytecode& bytecode = Bytecode::Handle(zone());
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#if !defined(DART_PRECOMPILED_RUNTIME)
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if (FLAG_enable_interpreter && !func.HasCode() && func.HasBytecode()) {
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// When the bytecode of a function is loaded, the function code is not null,
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// but pointing to the stub to interpret the bytecode. The various Print
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// functions below take code as an argument and know to process the bytecode
|
|
// if code is null.
|
|
code = Code::null(); // Ignore installed stub to interpret bytecode.
|
|
bytecode = func.bytecode();
|
|
}
|
|
#endif // !defined(DART_PRECOMPILED_RUNTIME)
|
|
if (code.IsNull() && bytecode.IsNull()) {
|
|
if (func.HasCode() || (compile_mode_ == kForceCompile)) {
|
|
const Error& err =
|
|
Error::Handle(Compiler::EnsureUnoptimizedCode(thread(), func));
|
|
if (!err.IsNull()) {
|
|
// Emit an uncompiled range for this function with error information.
|
|
JSONObject range(jsarr);
|
|
range.AddProperty("scriptIndex", GetScriptIndex(script));
|
|
range.AddProperty("startPos", begin_pos);
|
|
range.AddProperty("endPos", end_pos);
|
|
range.AddProperty("compiled", false);
|
|
range.AddProperty("error", err);
|
|
return;
|
|
}
|
|
code = func.unoptimized_code();
|
|
#if !defined(DART_PRECOMPILED_RUNTIME)
|
|
if (FLAG_enable_interpreter && !func.HasCode() && func.HasBytecode()) {
|
|
code = Code::null(); // Ignore installed stub to interpret bytecode.
|
|
bytecode = func.bytecode();
|
|
}
|
|
#endif // !defined(DART_PRECOMPILED_RUNTIME)
|
|
} else {
|
|
// This function has not been compiled yet.
|
|
JSONObject range(jsarr);
|
|
range.AddProperty("scriptIndex", GetScriptIndex(script));
|
|
range.AddProperty("startPos", begin_pos);
|
|
range.AddProperty("endPos", end_pos);
|
|
range.AddProperty("compiled", false);
|
|
return;
|
|
}
|
|
}
|
|
ASSERT(!code.IsNull() || !bytecode.IsNull());
|
|
|
|
// We skip compiled async functions. Once an async function has
|
|
// been compiled, there is another function with the same range which
|
|
// actually contains the user code.
|
|
if (!func.IsAsyncFunction() && !func.IsAsyncGenerator() &&
|
|
!func.IsSyncGenerator()) {
|
|
JSONObject range(jsarr);
|
|
range.AddProperty("scriptIndex", GetScriptIndex(script));
|
|
range.AddProperty("startPos", begin_pos);
|
|
range.AddProperty("endPos", end_pos);
|
|
range.AddProperty("compiled", true); // bytecode or code.
|
|
|
|
if (IsReportRequested(kCallSites)) {
|
|
PrintCallSitesData(&range, func, code);
|
|
}
|
|
if (IsReportRequested(kCoverage)) {
|
|
PrintCoverageData(&range, func, code);
|
|
}
|
|
if (IsReportRequested(kPossibleBreakpoints)) {
|
|
PrintPossibleBreakpointsData(&range, func, code);
|
|
}
|
|
if (IsReportRequested(kProfile)) {
|
|
ProfileFunction* profile_function = profile_.FindFunction(func);
|
|
if ((profile_function != NULL) &&
|
|
(profile_function->NumSourcePositions() > 0)) {
|
|
PrintProfileData(&range, profile_function);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Visit the closures declared in a bytecode function by traversing its object
|
|
// pool, because they do not appear in the object store's list of closures.
|
|
// Since local functions share the object pool, only traverse the pool once,
|
|
// i.e. when func is the outermost function.
|
|
if (!bytecode.IsNull() && !func.IsLocalFunction()) {
|
|
const ObjectPool& pool = ObjectPool::Handle(zone(), bytecode.object_pool());
|
|
Object& object = Object::Handle(zone());
|
|
Function& closure = Function::Handle(zone());
|
|
for (intptr_t i = 0; i < pool.Length(); i++) {
|
|
ObjectPool::EntryType entry_type = pool.TypeAt(i);
|
|
if (entry_type != ObjectPool::EntryType::kTaggedObject) {
|
|
continue;
|
|
}
|
|
object = pool.ObjectAt(i);
|
|
if (object.IsFunction()) {
|
|
closure ^= object.raw();
|
|
if (closure.kind() == RawFunction::kClosureFunction &&
|
|
closure.IsLocalFunction()) {
|
|
VisitFunction(jsarr, closure);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void SourceReport::VisitField(JSONArray* jsarr, const Field& field) {
|
|
if (ShouldSkipField(field) || !field.HasInitializerFunction()) return;
|
|
const Function& func = Function::Handle(field.InitializerFunction());
|
|
VisitFunction(jsarr, func);
|
|
}
|
|
|
|
void SourceReport::VisitLibrary(JSONArray* jsarr, const Library& lib) {
|
|
Class& cls = Class::Handle(zone());
|
|
Array& functions = Array::Handle(zone());
|
|
Array& fields = Array::Handle(zone());
|
|
Function& func = Function::Handle(zone());
|
|
Field& field = Field::Handle(zone());
|
|
Script& script = Script::Handle(zone());
|
|
ClassDictionaryIterator it(lib, ClassDictionaryIterator::kIteratePrivate);
|
|
while (it.HasNext()) {
|
|
cls = it.GetNextClass();
|
|
if (!cls.is_finalized()) {
|
|
if (compile_mode_ == kForceCompile) {
|
|
Error& err = Error::Handle(cls.EnsureIsFinalized(thread()));
|
|
if (!err.IsNull()) {
|
|
// Emit an uncompiled range for this class with error information.
|
|
JSONObject range(jsarr);
|
|
script = cls.script();
|
|
range.AddProperty("scriptIndex", GetScriptIndex(script));
|
|
range.AddProperty("startPos", cls.token_pos());
|
|
range.AddProperty("endPos", cls.end_token_pos());
|
|
range.AddProperty("compiled", false);
|
|
range.AddProperty("error", err);
|
|
continue;
|
|
}
|
|
ASSERT(cls.is_finalized());
|
|
} else {
|
|
cls.EnsureDeclarationLoaded();
|
|
// Emit one range for the whole uncompiled class.
|
|
JSONObject range(jsarr);
|
|
script = cls.script();
|
|
range.AddProperty("scriptIndex", GetScriptIndex(script));
|
|
range.AddProperty("startPos", cls.token_pos());
|
|
range.AddProperty("endPos", cls.end_token_pos());
|
|
range.AddProperty("compiled", false);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
functions = cls.functions();
|
|
for (int i = 0; i < functions.Length(); i++) {
|
|
func ^= functions.At(i);
|
|
VisitFunction(jsarr, func);
|
|
}
|
|
|
|
fields = cls.fields();
|
|
for (intptr_t i = 0; i < fields.Length(); i++) {
|
|
field ^= fields.At(i);
|
|
VisitField(jsarr, field);
|
|
}
|
|
}
|
|
}
|
|
|
|
void SourceReport::VisitClosures(JSONArray* jsarr) {
|
|
// Note that closures declared in bytecode are not visited here, but in
|
|
// VisitFunction while traversing the object pool of their owner functions.
|
|
const GrowableObjectArray& closures = GrowableObjectArray::Handle(
|
|
thread()->isolate()->object_store()->closure_functions());
|
|
|
|
// We need to keep rechecking the length of the closures array, as handling
|
|
// a closure potentially adds new entries to the end.
|
|
Function& func = Function::Handle(zone());
|
|
for (int i = 0; i < closures.Length(); i++) {
|
|
func ^= closures.At(i);
|
|
VisitFunction(jsarr, func);
|
|
}
|
|
}
|
|
|
|
void SourceReport::PrintJSON(JSONStream* js,
|
|
const Script& script,
|
|
TokenPosition start_pos,
|
|
TokenPosition end_pos) {
|
|
Init(Thread::Current(), &script, start_pos, end_pos);
|
|
|
|
JSONObject report(js);
|
|
report.AddProperty("type", "SourceReport");
|
|
{
|
|
JSONArray ranges(&report, "ranges");
|
|
|
|
const GrowableObjectArray& libs = GrowableObjectArray::Handle(
|
|
zone(), thread()->isolate()->object_store()->libraries());
|
|
|
|
// We only visit the libraries which actually load the specified script.
|
|
Library& lib = Library::Handle(zone());
|
|
for (int i = 0; i < libs.Length(); i++) {
|
|
lib ^= libs.At(i);
|
|
if (script.IsNull() || ScriptIsLoadedByLibrary(script, lib)) {
|
|
VisitLibrary(&ranges, lib);
|
|
}
|
|
}
|
|
|
|
// Visit all closures for this isolate.
|
|
VisitClosures(&ranges);
|
|
}
|
|
|
|
// Print the script table.
|
|
JSONArray scripts(&report, "scripts");
|
|
PrintScriptTable(&scripts);
|
|
}
|
|
|
|
} // namespace dart
|
|
#endif // !defined(PRODUCT) && !defined(DART_PRECOMPILED_RUNTIME)
|