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// Copyright (c) 2013, 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.
#ifndef RUNTIME_VM_TAGS_H_
#define RUNTIME_VM_TAGS_H_
#include "platform/growable_array.h"
#include "vm/allocation.h"
#include "vm/os_thread.h"
#include "vm/thread_stack_resource.h"
namespace dart {
class Isolate;
class JSONObject;
class RuntimeEntry;
#define VM_TAG_LIST(V) \
V(Idle) /* isolate is idle and is_runnable() */ \
V(LoadWait) /* isolate is idle and !is_runnable() */ \
V(VM) /* Catch all */ \
V(CompileOptimized) \
V(CompileUnoptimized) \
V(ClassLoading) \
V(CompileParseRegExp) \
V(Dart) \
V(DartInterpreted) \
V(GCNewSpace) \
V(GCOldSpace) \
V(GCIdle) \
V(Embedder) \
V(Runtime) \
V(Native)
class VMTag : public AllStatic {
public:
enum VMTagId {
kInvalidTagId = 0,
#define DEFINE_VM_TAG_ID(tag) k##tag##TagId,
VM_TAG_LIST(DEFINE_VM_TAG_ID)
#undef DEFINE_VM_TAG_KIND
kNumVMTags,
//
// All tags below |kNumVMTags| are special meta-data tags and do not
// indicate the state of the VM during a sample.
//
kRootTagId, // Special tag used as root of all profiles.
kTruncatedTagId, // Special tag used to indicate a truncated call stack.
// Code transition tags (used by unit tests).
kNoneCodeTagId,
kOptimizedCodeTagId,
kUnoptimizedCodeTagId,
kNativeCodeTagId,
kInlineStartCodeTagId,
kInlineEndCodeTagId,
kLastTagId,
};
static bool IsVMTag(uword id) {
return (id != kInvalidTagId) && (id < kNumVMTags);
}
static const char* TagName(uword id);
static bool IsNativeEntryTag(uword id);
static bool IsDartTag(uword id) { return id == kDartTagId; }
static bool IsExitFrameTag(uword id);
static bool IsRuntimeEntryTag(uword id);
static const char* RuntimeEntryTagName(uword id);
static void RegisterRuntimeEntry(RuntimeEntry* runtime_entry);
private:
struct TagEntry {
const char* name;
uword id;
};
static const TagEntry entries_[];
};
class VMTagScope : ThreadStackResource {
public:
VMTagScope(Thread* thread, uword tag, bool conditional_set = true);
~VMTagScope();
private:
uword previous_tag_;
DISALLOW_ALLOCATION();
DISALLOW_IMPLICIT_CONSTRUCTORS(VMTagScope);
};
class VMTagCounters {
public:
VMTagCounters();
void Increment(uword tag);
int64_t count(uword tag);
#ifndef PRODUCT
void PrintToJSONObject(JSONObject* obj);
#endif // !PRODUCT
private:
int64_t counters_[VMTag::kNumVMTags];
};
class UserTags : public AllStatic {
public:
// UserTag id space: [kUserTagIdOffset, kUserTagIdOffset + kMaxUserTags).
static constexpr intptr_t kMaxUserTags = 256;
static constexpr uword kUserTagIdOffset = 0x4096;
static constexpr uword kDefaultUserTag = kUserTagIdOffset;
static const char* TagName(uword tag_id);
static bool IsUserTag(uword tag_id) {
return (tag_id >= kUserTagIdOffset) &&
(tag_id < kUserTagIdOffset + kMaxUserTags);
}
static void AddStreamableTagName(const char* tag);
static void RemoveStreamableTagName(const char* tag);
static bool IsTagNameStreamable(const char* tag);
static void Init();
static void Cleanup();
private:
static Mutex* subscribed_tags_lock_;
static MallocGrowableArray<const char*> subscribed_tags_;
};
} // namespace dart
#endif // RUNTIME_VM_TAGS_H_