| // Copyright (c) 2012, 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_CODE_OBSERVERS_H_ |
| #define RUNTIME_VM_CODE_OBSERVERS_H_ |
| |
| #include "vm/allocation.h" |
| #include "vm/globals.h" |
| |
| namespace dart { |
| |
| #ifndef PRODUCT |
| |
| class Mutex; |
| |
| // An abstract representation of comments associated with the given code |
| // object. We assume that comments are sorted by PCOffset. |
| class CodeComments : public ValueObject { |
| public: |
| CodeComments() = default; |
| virtual ~CodeComments() = default; |
| |
| virtual intptr_t Length() const = 0; |
| virtual intptr_t PCOffsetAt(intptr_t index) const = 0; |
| virtual const char* CommentAt(intptr_t index) const = 0; |
| }; |
| |
| // Object observing code creation events. Used by external profilers and |
| // debuggers to map address ranges to function names. |
| class CodeObserver { |
| public: |
| CodeObserver() {} |
| |
| virtual ~CodeObserver() {} |
| |
| // Returns true if this observer is active and should be notified |
| // about newly created code objects. |
| virtual bool IsActive() const = 0; |
| |
| // Notify code observer about a newly created code object with the |
| // given properties. |
| virtual void Notify(const char* name, |
| uword base, |
| uword prologue_offset, |
| uword size, |
| bool optimized, |
| const CodeComments* comments) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(CodeObserver); |
| }; |
| |
| class CodeObservers : public AllStatic { |
| public: |
| static void Init(); |
| |
| static void Register(CodeObserver* observer); |
| |
| // Notify all active code observers about a newly created code object. |
| static void NotifyAll(const char* name, |
| uword base, |
| uword prologue_offset, |
| uword size, |
| bool optimized, |
| const CodeComments* comments); |
| |
| // Returns true if there is at least one active code observer. |
| static bool AreActive(); |
| |
| static void Cleanup(); |
| |
| static Mutex* mutex() { return mutex_; } |
| |
| private: |
| static Mutex* mutex_; |
| static intptr_t observers_length_; |
| static CodeObserver** observers_; |
| }; |
| |
| #endif // !PRODUCT |
| |
| } // namespace dart |
| |
| #endif // RUNTIME_VM_CODE_OBSERVERS_H_ |