mirror of
https://github.com/dart-lang/sdk
synced 2024-09-18 22:01:19 +00:00
174 lines
4.1 KiB
C++
174 lines
4.1 KiB
C++
// Copyright (c) 2014, 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/tags.h"
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#include "vm/isolate.h"
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#include "vm/json_stream.h"
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#include "vm/native_entry.h"
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#include "vm/runtime_entry.h"
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#include "vm/object.h"
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namespace dart {
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const char* VMTag::TagName(uword tag) {
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if (IsNativeEntryTag(tag)) {
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const uint8_t* native_reverse_lookup = NativeEntry::ResolveSymbol(tag);
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if (native_reverse_lookup != NULL) {
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return reinterpret_cast<const char*>(native_reverse_lookup);
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}
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return "Unknown native entry";
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} else if (IsRuntimeEntryTag(tag)) {
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const char* runtime_entry_name = RuntimeEntryTagName(tag);
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ASSERT(runtime_entry_name != NULL);
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return runtime_entry_name;
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}
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ASSERT(tag != kInvalidTagId);
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ASSERT(tag < kNumVMTags);
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const TagEntry& entry = entries_[tag];
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ASSERT(entry.id == tag);
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return entry.name;
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}
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bool VMTag::IsNativeEntryTag(uword tag) {
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return (tag > kLastTagId) && !IsRuntimeEntryTag(tag);
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}
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bool VMTag::IsDartTag(uword id) {
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return id == kDartTagId;
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}
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bool VMTag::IsExitFrameTag(uword id) {
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return (id != 0) && !IsDartTag(id) && (id != kIdleTagId) &&
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(id != kVMTagId) && (id != kEmbedderTagId);
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}
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static RuntimeEntry* runtime_entry_list = NULL;
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bool VMTag::IsRuntimeEntryTag(uword id) {
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const RuntimeEntry* current = runtime_entry_list;
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while (current != NULL) {
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if (reinterpret_cast<uword>(current->function()) == id) {
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return true;
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}
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current = current->next();
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}
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return false;
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}
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const char* VMTag::RuntimeEntryTagName(uword id) {
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const RuntimeEntry* current = runtime_entry_list;
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while (current != NULL) {
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if (reinterpret_cast<uword>(current->function()) == id) {
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return current->name();
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}
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current = current->next();
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}
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return NULL;
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}
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void VMTag::RegisterRuntimeEntry(RuntimeEntry* runtime_entry) {
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ASSERT(runtime_entry != NULL);
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runtime_entry->set_next(runtime_entry_list);
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runtime_entry_list = runtime_entry;
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}
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VMTag::TagEntry VMTag::entries_[] = {
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{ "InvalidTag", kInvalidTagId, },
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#define DEFINE_VM_TAG_ENTRY(tag) \
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{ ""#tag, k##tag##TagId },
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VM_TAG_LIST(DEFINE_VM_TAG_ENTRY)
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#undef DEFINE_VM_TAG_ENTRY
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{ "kNumVMTags", kNumVMTags },
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};
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VMTagScope::VMTagScope(Thread* thread, uword tag, bool conditional_set)
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: StackResource(thread) {
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ASSERT(isolate() != NULL);
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previous_tag_ = thread->vm_tag();
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if (conditional_set) {
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thread->set_vm_tag(tag);
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}
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}
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VMTagScope::~VMTagScope() {
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ASSERT(isolate() != NULL);
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thread()->set_vm_tag(previous_tag_);
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}
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VMTagCounters::VMTagCounters() {
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for (intptr_t i = 0; i < VMTag::kNumVMTags; i++) {
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counters_[i] = 0;
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}
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}
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void VMTagCounters::Increment(uword tag) {
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if (VMTag::IsRuntimeEntryTag(tag)) {
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counters_[VMTag::kRuntimeTagId]++;
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return;
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} else if (tag > VMTag::kNumVMTags) {
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// Assume native entry.
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counters_[VMTag::kNativeTagId]++;
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return;
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}
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ASSERT(tag != VMTag::kInvalidTagId);
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ASSERT(tag < VMTag::kNumVMTags);
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counters_[tag]++;
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}
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int64_t VMTagCounters::count(uword tag) {
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ASSERT(tag != VMTag::kInvalidTagId);
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ASSERT(tag < VMTag::kNumVMTags);
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return counters_[tag];
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}
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#ifndef PRODUCT
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void VMTagCounters::PrintToJSONObject(JSONObject* obj) {
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if (!FLAG_support_service) {
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return;
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}
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{
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JSONArray arr(obj, "names");
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for (intptr_t i = 1; i < VMTag::kNumVMTags; i++) {
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arr.AddValue(VMTag::TagName(i));
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}
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}
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{
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JSONArray arr(obj, "counters");
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for (intptr_t i = 1; i < VMTag::kNumVMTags; i++) {
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arr.AddValue64(counters_[i]);
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}
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}
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}
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#endif // !PRODUCT
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const char* UserTags::TagName(uword tag_id) {
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ASSERT(tag_id >= kUserTagIdOffset);
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ASSERT(tag_id < kUserTagIdOffset + kMaxUserTags);
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Zone* zone = Thread::Current()->zone();
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const UserTag& tag =
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UserTag::Handle(zone, UserTag::FindTagById(tag_id));
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ASSERT(!tag.IsNull());
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const String& label = String::Handle(zone, tag.label());
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return label.ToCString();
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}
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} // namespace dart
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