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Dart_CodeObserver is a struct (in dart_api.h) with two pointers: void* data; void (*Dart_OnNewCodeCallback)(...) on_new_code; Change-Id: I556b73e0e3488a10f9fd162af24e36ad4f240fa1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/111723 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Clement Skau <cskau@google.com>
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
// Copyright (c) 2012, 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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#ifndef RUNTIME_VM_CODE_OBSERVERS_H_
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#define RUNTIME_VM_CODE_OBSERVERS_H_
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#include "vm/allocation.h"
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#include "vm/globals.h"
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#include "include/dart_api.h"
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namespace dart {
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#ifndef PRODUCT
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class Mutex;
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// An abstract representation of comments associated with the given code
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// object. We assume that comments are sorted by PCOffset.
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class CodeComments : public ValueObject {
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public:
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CodeComments() = default;
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virtual ~CodeComments() = default;
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virtual intptr_t Length() const = 0;
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virtual intptr_t PCOffsetAt(intptr_t index) const = 0;
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virtual const char* CommentAt(intptr_t index) const = 0;
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};
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// Object observing code creation events. Used by external profilers and
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// debuggers to map address ranges to function names.
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class CodeObserver {
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public:
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CodeObserver() {}
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virtual ~CodeObserver() {}
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// Returns true if this observer is active and should be notified
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// about newly created code objects.
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virtual bool IsActive() const = 0;
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// Notify code observer about a newly created code object with the
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// given properties.
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virtual void Notify(const char* name,
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uword base,
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uword prologue_offset,
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uword size,
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bool optimized,
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const CodeComments* comments) = 0;
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private:
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DISALLOW_COPY_AND_ASSIGN(CodeObserver);
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};
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class CodeObservers : public AllStatic {
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public:
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static void Init();
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static void RegisterExternal(Dart_CodeObserver observer);
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static void Register(CodeObserver* observer);
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// Notify all active code observers about a newly created code object.
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static void NotifyAll(const char* name,
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uword base,
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uword prologue_offset,
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uword size,
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bool optimized,
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const CodeComments* comments);
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// Returns true if there is at least one active code observer.
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static bool AreActive();
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static void Cleanup();
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static Mutex* mutex() { return mutex_; }
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private:
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static Mutex* mutex_;
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static intptr_t observers_length_;
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static CodeObserver** observers_;
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};
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#endif // !PRODUCT
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} // namespace dart
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#endif // RUNTIME_VM_CODE_OBSERVERS_H_
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