AmiTimeKeeper/message.c

/*-
 * Copyright (c) 2017-2020 Carsten Sonne Larsen <cs@innolan.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 */

#include "config.h"
#include "global.h"
#include "message.h"
#include "mem.h"

void SendMessage(long type)
{
    SendMessageTo(Ports.BrokerPort, Ports.MemoryPort, type);
}

void SendMessageTo(struct MsgPort *dest, struct MsgPort *reply, long type)
{
    Forbid();
    if (dest != NULL && reply != NULL)
    {
        struct ApplicationMesage *message = AllocStructSafe(struct ApplicationMesage);
        message->Msg.mn_Node.ln_Type = NT_MESSAGE;
        message->Msg.mn_Length = sizeof(struct ApplicationMesage);
        message->Msg.mn_ReplyPort = reply;
        message->MsgType = MSGTYPE_APP;
        message->MsgId = type;
        PutMsg(dest, (struct Message *)message);
    }
    Permit();
}

void SendMessageWait(struct MsgPort *dest, long type)
{
    struct MsgPort *replyPort;

    if (dest == NULL)
    {
        return;
    }

    replyPort = CreateMsgPort();
    if (replyPort)
    {
        struct Message *msg;
        SendMessageTo(dest, replyPort, type);
        WaitPort(replyPort);
        msg = GetMsg(replyPort);
        DeleteMsgPort(replyPort);
        FreeMemSafe(msg);
    }
}

void CleanupVolMsgPort(struct MsgPort *volatile *port)
{
    struct MsgPort *msgPort;
    bool exist = true;

    Forbid();
    if (*port == NULL)
    {
        exist = false;
    }
    else
    {
        msgPort = *port;
        *port = NULL;
    }
    Permit();

    if (exist)
    {
        struct Message *msg;
        while ((msg = GetMsg(msgPort)))
        {
            ReplyMsg(msg);
        }
        DeleteMsgPort(msgPort);
    }
}

void CleanupMsgPort(struct MsgPort **port)
{
    struct Message *msg;
    struct MsgPort *msgPort = *port;

    if (*port == NULL)
    {
        return;
    }

    *port = NULL;

    while ((msg = GetMsg(msgPort)))
    {
        ReplyMsg(msg);
    }

    DeleteMsgPort(msgPort);
}