Martin Kustermann
c8ebfcd739
Since the transition from Source based to Kernel based frontend to the Dart VM, we have not supported callable redirecting factories. This has caused all removed code in this CL to be unused and untested! The support for reifing redirection related information would mainly be used by embedder / dart:mirrors. Right now its not used by anyone and the kernel support was never implemented. I suggest we remove the unused and untested code until a decision has been made that we actually want to support it - in which case it can be properly implemented, possibly by re-using some of the deleted code in this CL. TEST=CL removes unused code, no test result changes. Change-Id: I7ed45c85b4efcc1e81ce44cbe08bb555e52101b9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166853 Commit-Queue: Martin Kustermann <kustermann@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>
577 lines
19 KiB
C++
577 lines
19 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/bit_vector.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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}
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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 FunctionLayout::kRegularFunction:
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case FunctionLayout::kClosureFunction:
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case FunctionLayout::kImplicitClosureFunction:
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case FunctionLayout::kImplicitStaticGetter:
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case FunctionLayout::kFieldInitializer:
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case FunctionLayout::kGetterFunction:
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case FunctionLayout::kSetterFunction:
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case FunctionLayout::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.is_synthetic()) {
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return true;
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}
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if (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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ASSERT(!code.IsNull());
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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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PcDescriptorsLayout::kIcCall | PcDescriptorsLayout::kUnoptStaticCall);
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while (iter.MoveNext()) {
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HANDLESCOPE(thread());
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ASSERT(iter.DeoptId() < ic_data_array->length());
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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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ASSERT(!code.IsNull());
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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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PcDescriptorsLayout::kIcCall | PcDescriptorsLayout::kUnoptStaticCall);
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while (iter.MoveNext()) {
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HANDLESCOPE(thread());
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ASSERT(iter.DeoptId() < ic_data_array->length());
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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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BitVector possible(zone(), func_length);
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ASSERT(!code.IsNull());
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const uint8_t kSafepointKind =
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(PcDescriptorsLayout::kIcCall | PcDescriptorsLayout::kUnoptStaticCall |
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PcDescriptorsLayout::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.Add(token_offset);
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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.Contains(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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if (code.IsNull()) {
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if (func.HasCode() || (compile_mode_ == kForceCompile)) {
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const Error& err =
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Error::Handle(Compiler::EnsureUnoptimizedCode(thread(), func));
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if (!err.IsNull()) {
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// Emit an uncompiled range for this function with error information.
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JSONObject range(jsarr);
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range.AddProperty("scriptIndex", GetScriptIndex(script));
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range.AddProperty("startPos", begin_pos);
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range.AddProperty("endPos", end_pos);
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range.AddProperty("compiled", false);
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range.AddProperty("error", err);
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return;
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}
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code = func.unoptimized_code();
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} else {
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// This function has not been compiled yet.
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JSONObject range(jsarr);
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range.AddProperty("scriptIndex", GetScriptIndex(script));
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range.AddProperty("startPos", begin_pos);
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range.AddProperty("endPos", end_pos);
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range.AddProperty("compiled", false);
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return;
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}
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}
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ASSERT(!code.IsNull());
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// We skip compiled async functions. Once an async function has
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// been compiled, there is another function with the same range which
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// actually contains the user code.
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if (!func.IsAsyncFunction() && !func.IsAsyncGenerator() &&
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!func.IsSyncGenerator()) {
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JSONObject range(jsarr);
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range.AddProperty("scriptIndex", GetScriptIndex(script));
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range.AddProperty("startPos", begin_pos);
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range.AddProperty("endPos", end_pos);
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range.AddProperty("compiled", true);
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if (IsReportRequested(kCallSites)) {
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PrintCallSitesData(&range, func, code);
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}
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if (IsReportRequested(kCoverage)) {
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PrintCoverageData(&range, func, code);
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}
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if (IsReportRequested(kPossibleBreakpoints)) {
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PrintPossibleBreakpointsData(&range, func, code);
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}
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if (IsReportRequested(kProfile)) {
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ProfileFunction* profile_function = profile_.FindFunction(func);
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if ((profile_function != NULL) &&
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(profile_function->NumSourcePositions() > 0)) {
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PrintProfileData(&range, profile_function);
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}
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}
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}
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}
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void SourceReport::VisitField(JSONArray* jsarr, const Field& field) {
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if (ShouldSkipField(field) || !field.HasInitializerFunction()) return;
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const Function& func = Function::Handle(field.InitializerFunction());
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VisitFunction(jsarr, func);
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}
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void SourceReport::VisitLibrary(JSONArray* jsarr, const Library& lib) {
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Class& cls = Class::Handle(zone());
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Array& functions = Array::Handle(zone());
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Array& fields = Array::Handle(zone());
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Function& func = Function::Handle(zone());
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Field& field = Field::Handle(zone());
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Script& script = Script::Handle(zone());
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ClassDictionaryIterator it(lib, ClassDictionaryIterator::kIteratePrivate);
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while (it.HasNext()) {
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cls = it.GetNextClass();
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if (!cls.is_finalized()) {
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if (compile_mode_ == kForceCompile) {
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Error& err = Error::Handle(cls.EnsureIsFinalized(thread()));
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if (!err.IsNull()) {
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// 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.current_functions();
|
|
for (int i = 0; i < functions.Length(); i++) {
|
|
func ^= functions.At(i);
|
|
// Skip getter functions of static const field.
|
|
if (func.kind() == FunctionLayout::kImplicitStaticGetter) {
|
|
field ^= func.accessor_field();
|
|
if (field.is_const() && field.is_static()) {
|
|
continue;
|
|
}
|
|
}
|
|
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) {
|
|
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)
|