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// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// * Neither the name of Google Inc. nor the name Chromium Embedded

// Framework nor the names of its contributors may be used to endorse

// or promote products derived from this software without specific prior

// written permission.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// ---------------------------------------------------------------------------

// The contents of this file must follow a specific format in order to

// support the CEF translator tool. See the translator.README.txt file in the

// tools directory for more information.

#ifndef CEF_INCLUDE_CEF_BASE_H_

#define CEF_INCLUDE_CEF_BASE_H_

#pragma once

#include "include/internal/cef_build.h"

#include "include/internal/cef_ptr.h"

#include "include/internal/cef_types_wrappers.h"

// Bring in platform-specific definitions.

#if defined(OS_WIN)

#include "include/internal/cef_win.h"

#elif defined(OS_MACOSX)

#include "include/internal/cef_mac.h"

#elif defined(OS_LINUX)

#include "include/internal/cef_linux.h"

#endif

///

// Interface defining the reference count implementation methods. All framework

// classes must extend the CefBase class.

///

class CefBase {

public:

///

// The AddRef method increments the reference count for the object. It should

// be called for every new copy of a pointer to a given object. The resulting

// reference count value is returned and should be used for diagnostic/testing

// purposes only.

///

virtual int AddRef() =0;

///

// The Release method decrements the reference count for the object. If the

// reference count on the object falls to 0, then the object should free

// itself from memory. The resulting reference count value is returned and

// should be used for diagnostic/testing purposes only.

///

virtual int Release() =0;

///

// Return the current number of references.

///

virtual int GetRefCt() =0;

protected:

virtual ~CefBase() {}

};

///

// Class that implements atomic reference counting.

///

class CefRefCount {

public:

CefRefCount() : refct_(0) {}

///

// Atomic reference increment.

///

int AddRef() {

return CefAtomicIncrement(&refct_);

}

///

// Atomic reference decrement. Delete the object when no references remain.

///

int Release() {

return CefAtomicDecrement(&refct_);

}

///

// Return the current number of references.

///

int GetRefCt() { return refct_; }

private:

long refct_; // NOLINT(runtime/int)

};

///

// Macro that provides a reference counting implementation for classes extending

// CefBase.

///

#define IMPLEMENT_REFCOUNTING(ClassName) \

public: \

int AddRef() { return refct_.AddRef(); } \

int Release() { \

int retval = refct_.Release(); \

if (retval == 0) \

delete this; \

return retval; \

} \

int GetRefCt() { return refct_.GetRefCt(); } \

private: \

CefRefCount refct_;

///

// Macro that provides a locking implementation. Use the Lock() and Unlock()

// methods to protect a section of code from simultaneous access by multiple

// threads. The AutoLock class is a helper that will hold the lock while in

// scope.

///

#define IMPLEMENT_LOCKING(ClassName) \

public: \

class AutoLock { \

public: \

explicit AutoLock(ClassName* base) : base_(base) { base_->Lock(); } \

~AutoLock() { base_->Unlock(); } \

private: \

ClassName* base_; \

}; \

void Lock() { critsec_.Lock(); } \

void Unlock() { critsec_.Unlock(); } \

private: \

CefCriticalSection critsec_;

#endif // CEF_INCLUDE_CEF_BASE_H_

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