QoreQueue.h

/* -*- mode: c++; indent-tabs-mode: nil -*- */
/*
    QoreQueue.h

    Qore Programming Language

    Copyright (C) 2003 - 2018 Qore Technologies, s.r.o.

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    DEALINGS IN THE SOFTWARE.

    Note that the Qore library is released under a choice of three open-source
    licenses: MIT (as above), LGPL 2+, or GPL 2+; see README-LICENSE for more
    information.
*/

#ifndef _QORE_QOREQUEUE_H

#define _QORE_QOREQUEUE_H

#include <qore/QoreThreadLock.h>
#include <qore/QoreCondition.h>

class QoreQueueNode;

class qore_queue_private;

class QoreQueue {
   friend class qore_queue_private;
protected:
   // private implementation
   qore_queue_private* priv;

public:
   DLLEXPORT QoreQueue(int n_max = -1);

   DLLEXPORT QoreQueue(const QoreQueue& orig);


   DLLEXPORT ~QoreQueue();

   DLLEXPORT void pushAndTakeRef(QoreValue n);

   DLLEXPORT void push(ExceptionSink* xsink, QoreValue n, int timeout_ms = 0, bool* to = 0);

   DLLEXPORT void insert(ExceptionSink* xsink, QoreValue n, int timeout_ms = 0, bool* to = 0);


   DLLEXPORT void push(ExceptionSink* xsink, QoreObject* self, QoreValue n, int timeout_ms = 0, bool* to = nullptr);


   DLLEXPORT void insert(ExceptionSink* xsink, QoreObject* self, QoreValue n, int timeout_ms = 0, bool* to = nullptr);

   DLLEXPORT QoreValue shift(ExceptionSink* xsink, int timeout_ms = 0, bool* to = nullptr);

   DLLEXPORT QoreValue pop(ExceptionSink* xsink, int timeout_ms = 0, bool* to = nullptr);


   DLLEXPORT QoreValue shift(ExceptionSink* xsink, QoreObject* self, int timeout_ms = 0, bool* to = nullptr);


   DLLEXPORT QoreValue pop(ExceptionSink* xsink, QoreObject* self, int timeout_ms = 0, bool* to = nullptr);

   DLLEXPORT bool empty() const;

   DLLEXPORT size_t size() const;

   DLLEXPORT ptrdiff_t getMax() const;

   DLLEXPORT size_t getReadWaiting() const;

   DLLEXPORT size_t getWriteWaiting() const;

   DLLEXPORT void clear(ExceptionSink* xsink);


   DLLEXPORT void clear(ExceptionSink* xsink, QoreObject* self);


   DLLEXPORT void setError(const char* err, const QoreStringNode* desc, ExceptionSink* xsink);


   DLLEXPORT void setError(const char* err, const QoreStringNode* desc, QoreObject* self, ExceptionSink* xsink);


   DLLEXPORT void clearError();
};

class Queue : public AbstractPrivateData, public QoreQueue {
protected:
   DLLEXPORT virtual ~Queue();

public:
   DLLEXPORT Queue(int max = -1);

   DLLEXPORT Queue(const Queue& old);

   DLLEXPORT Queue* queueRefSelf() const;

   DLLEXPORT virtual void deref(ExceptionSink* xsink);
};

#endif // _QORE_QOREQUEUE_H