/*----------------------------------------------------------------------------*/
/*                                                                            */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved.             */
/* Copyright (c) 2005-2024 Rexx Language Association. All rights reserved.    */
/*                                                                            */
/* This program and the accompanying materials are made available under       */
/* the terms of the Common Public License v1.0 which accompanies this         */
/* distribution. A copy is also available at the following address:           */
/* https://www.oorexx.org/license.html                                        */
/*                                                                            */
/* 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 Rexx Language Association 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,      */
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/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,        */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.               */
/*                                                                            */
/*----------------------------------------------------------------------------*/
/*****************************************************************************/
/* REXX Windows Support                                                      */
/*                                                                           */
/* Main Unix interpreter control.  This is the preferred location for        */
/* all platform dependent global variables.                                  */
/* The interpreter does not instantiate an instance of this                  */
/* class, so most variables and methods should be static.                    */
/*                                                                           */
/*                                                                           */
/*****************************************************************************/

#ifndef SystemInterpreter_Included
#define SystemInterpreter_Included

#include "RexxCore.h"

#include <signal.h>
#if defined( HAVE_SYS_SIGNAL_H )
# include <sys/signal.h>
#endif

#include <sys/time.h>
#include <time.h>


class InterpreterInstance;
class RexxActivation;
class RexxDateTime;
class BufferClass;
class FileNameBuffer;

/**
 * A platform-specific class that implements a number of platform abstraction APIs as static methods.
 */

class SystemInterpreter
{
public:
    static void live(size_t);
    static void liveGeneral(MarkReason reason);

    static void processStartup();
    static void processShutdown();

    static void startInterpreter();
    static void terminateInterpreter();

    static void initializeInstance(InterpreterInstance *instance);
    static void terminateInstance(InterpreterInstance *instance);

    static RexxObject *popEnvironment(RexxActivation *context);
    static RexxObject *pushEnvironment(RexxActivation *context);
    static void restoreEnvironment(void *CurrentEnv);
    static RexxObject *buildEnvlist();
    static void getCurrentTime(RexxDateTime *Date);
    static int64_t getNanosecondTicks();
    static const char *getPlatformName();
    static RexxString *getUserid();
    static void releaseResultMemory(void *);
    static void *allocateResultMemory(size_t);
    static void releaseSegmentMemory(void *);
    static void *allocateSegmentMemory(size_t);
    static bool valueFunction(RexxString *name, RexxObject *newValue, RexxString *selector, ProtectedObject &result);
    static RexxString *getDefaultAddressName();
    static bool invokeExternalFunction(RexxActivation *, Activity *, RexxString *, RexxObject **, size_t, RexxString *, ProtectedObject &);
    static void validateAddressName(RexxString *name );
    static void setEnvironmentVariable(const char *name, const char *value);
    static bool getEnvironmentVariable(const char *variable, FileNameBuffer &buffer);

    static sigset_t oldmask;       // masks used for setting signal handlers
    static sigset_t newmask;
};

#endif
