blob: 0a82be3b7b8e134e482ffedc56a1972f45fc74d0 [file] [log] [blame]
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/tags.h"
#include "vm/isolate.h"
#include "vm/json_stream.h"
#include "vm/native_entry.h"
#include "vm/runtime_entry.h"
#include "vm/object.h"
namespace dart {
const char* VMTag::TagName(uword tag) {
if (IsNativeEntryTag(tag)) {
const uint8_t* native_reverse_lookup = NativeEntry::ResolveSymbol(tag);
if (native_reverse_lookup != NULL) {
return reinterpret_cast<const char*>(native_reverse_lookup);
}
return "Unknown native entry";
} else if (IsRuntimeEntryTag(tag)) {
const char* runtime_entry_name = RuntimeEntryTagName(tag);
ASSERT(runtime_entry_name != NULL);
return runtime_entry_name;
}
ASSERT(tag != kInvalidTagId);
ASSERT(tag < kNumVMTags);
const TagEntry& entry = entries_[tag];
ASSERT(entry.id == tag);
return entry.name;
}
bool VMTag::IsNativeEntryTag(uword tag) {
return (tag > kLastTagId) && !IsRuntimeEntryTag(tag);
}
static RuntimeEntry* runtime_entry_list = NULL;
bool VMTag::IsRuntimeEntryTag(uword id) {
const RuntimeEntry* current = runtime_entry_list;
while (current != NULL) {
if (reinterpret_cast<uword>(current->function()) == id) {
return true;
}
current = current->next();
}
return false;
}
const char* VMTag::RuntimeEntryTagName(uword id) {
const RuntimeEntry* current = runtime_entry_list;
while (current != NULL) {
if (reinterpret_cast<uword>(current->function()) == id) {
return current->name();
}
current = current->next();
}
return NULL;
}
void VMTag::RegisterRuntimeEntry(RuntimeEntry* runtime_entry) {
ASSERT(runtime_entry != NULL);
runtime_entry->set_next(runtime_entry_list);
runtime_entry_list = runtime_entry;
}
VMTag::TagEntry VMTag::entries_[] = {
{ "InvalidTag", kInvalidTagId, },
#define DEFINE_VM_TAG_ENTRY(tag) \
{ ""#tag, k##tag##TagId },
VM_TAG_LIST(DEFINE_VM_TAG_ENTRY)
#undef DEFINE_VM_TAG_ENTRY
{ "kNumVMTags", kNumVMTags },
};
VMTagScope::VMTagScope(Thread* thread, uword tag, bool conditional_set)
: StackResource(thread) {
ASSERT(isolate() != NULL);
previous_tag_ = thread->vm_tag();
if (conditional_set) {
thread->set_vm_tag(tag);
}
}
VMTagScope::~VMTagScope() {
ASSERT(isolate() != NULL);
thread()->set_vm_tag(previous_tag_);
}
VMTagCounters::VMTagCounters() {
for (intptr_t i = 0; i < VMTag::kNumVMTags; i++) {
counters_[i] = 0;
}
}
void VMTagCounters::Increment(uword tag) {
if (VMTag::IsRuntimeEntryTag(tag)) {
counters_[VMTag::kRuntimeTagId]++;
return;
} else if (tag > VMTag::kNumVMTags) {
// Assume native entry.
counters_[VMTag::kNativeTagId]++;
return;
}
ASSERT(tag != VMTag::kInvalidTagId);
ASSERT(tag < VMTag::kNumVMTags);
counters_[tag]++;
}
int64_t VMTagCounters::count(uword tag) {
ASSERT(tag != VMTag::kInvalidTagId);
ASSERT(tag < VMTag::kNumVMTags);
return counters_[tag];
}
void VMTagCounters::PrintToJSONObject(JSONObject* obj) {
{
JSONArray arr(obj, "names");
for (intptr_t i = 1; i < VMTag::kNumVMTags; i++) {
arr.AddValue(VMTag::TagName(i));
}
}
{
JSONArray arr(obj, "counters");
for (intptr_t i = 1; i < VMTag::kNumVMTags; i++) {
arr.AddValue64(counters_[i]);
}
}
}
const char* UserTags::TagName(uword tag_id) {
ASSERT(tag_id >= kUserTagIdOffset);
ASSERT(tag_id < kUserTagIdOffset + kMaxUserTags);
Zone* zone = Thread::Current()->zone();
const UserTag& tag =
UserTag::Handle(zone, UserTag::FindTagById(tag_id));
ASSERT(!tag.IsNull());
const String& label = String::Handle(zone, tag.label());
return label.ToCString();
}
} // namespace dart