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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#include "stdafx.h"
#include "engine.h"
#include <exec/memory.h>
#include <exec/semaphores.h>
#include <dos/dostags.h>
#include <emul/emulinterface.h>
#include <proto/exec.h>
#include <proto/dos.h>
#include <proto/timer.h>
#include "morphos.h"
#include "timer.h"
Timer::Timer(Engine * engine)
{
if ((TimerServicePort = CreateMsgPort()))
{
TimerServiceStartup.mn_Node.ln_Type = NT_MESSAGE;
TimerServiceStartup.mn_ReplyPort = TimerServicePort;
TimerServiceStartup.mn_Length = sizeof(TimerServiceStartup);
TimerServiceThread = CreateNewProcTags(NP_Entry, (ULONG) TimerService,
NP_CodeType, CODETYPE_PPC,
NP_Name, (ULONG) "ScummVM Timer Service",
NP_Priority, 0,
NP_StartupMsg, &TimerServiceStartup,
NP_PPC_Arg1, (ULONG) this,
NP_PPC_Arg2, (ULONG) engine,
TAG_DONE
);
}
}
Timer::~Timer()
{
if (TimerServiceThread)
{
Signal((Task *) TimerServiceThread, SIGBREAKF_CTRL_C);
WaitPort(TimerServicePort);
DeleteMsgPort(TimerServicePort);
TimerServiceThread = NULL;
}
}
bool Timer::init()
{
return TimerServiceThread != NULL;
}
void Timer::release()
{
}
bool Timer::installTimerProc(TimerProc procedure, int32 interval)
{
return SendMsg(TSM_MSGID_ADDTIMER, procedure, interval);
}
void Timer::removeTimerProc(TimerProc procedure)
{
SendMsg(TSM_MSGID_REMTIMER, procedure, 0);
}
bool Timer::SendMsg(ULONG msg_id, TimerProc procedure, LONG interval)
{
if (TimerServiceThread == NULL)
return false;
TimerServiceMessage *tmsg = (TimerServiceMessage *) AllocVec(sizeof (TimerServiceMessage), MEMF_PUBLIC | MEMF_CLEAR);
if (tmsg == NULL)
return false;
tmsg->tsm_Message.mn_Node.ln_Type = NT_MESSAGE;
tmsg->tsm_Message.mn_ReplyPort = NULL;
tmsg->tsm_Message.mn_Length = sizeof (TimerServiceMessage);
tmsg->tsm_MsgID = msg_id;
tmsg->tsm_Callback = procedure;
tmsg->tsm_Interval = interval;
PutMsg(&TimerServiceThread->pr_MsgPort, (Message*) tmsg);
return true;
}
void Timer::TimerService(Timer *this_ptr, Engine *engine)
{
MsgPort *port = &((Process *) FindTask(NULL))->pr_MsgPort;
ULONG port_bit = 1 << port->mp_SigBit;
ULONG signal_mask = SIGBREAKF_CTRL_C | port_bit;
ULONG timer_bits = 0, signals;
ULONG interval, t;
timeval start_callback, end_callback;
ULONG timers = 0;
TimerSlot timer_slots[MAX_TIMERS];
for (;;)
{
signals = Wait(signal_mask);
GetSysTime(&start_callback);
if (signals & port_bit)
{
TimerServiceMessage *tmsg;
while ((tmsg = (TimerServiceMessage *) GetMsg(port)))
{
if (tmsg->tsm_Message.mn_Length == sizeof (TimerServiceMessage))
{
switch (tmsg->tsm_MsgID)
{
case TSM_MSGID_ADDTIMER:
if (timers < MAX_TIMERS)
{
ULONG unit = UNIT_MICROHZ;
if (tmsg->tsm_Interval >= 1000000)
unit = UNIT_VBLANK;
if (OSystem_MorphOS::OpenATimer(&timer_slots[timers].ts_Port, (IORequest **) &timer_slots[timers].ts_IORequest, unit))
{
timer_slots[timers].ts_Callback = tmsg->tsm_Callback;
timer_slots[timers].ts_Interval = tmsg->tsm_Interval;
timer_slots[timers].ts_SignalBit = 1 << timer_slots[timers].ts_Port->mp_SigBit;
signal_mask |= timer_slots[timers].ts_SignalBit;
timer_bits |= timer_slots[timers].ts_SignalBit;
timerequest *req = timer_slots[timers].ts_IORequest;
interval = timer_slots[timers].ts_Interval;
req->tr_node.io_Command = TR_ADDREQUEST;
req->tr_time.tv_secs = interval/1000000;
req->tr_time.tv_micro = interval%1000000;
SendIO((IORequest*) req);
timers++;
}
}
break;
case TSM_MSGID_REMTIMER:
{
for (t = 0; t < timers; t++)
{
if (timer_slots[t].ts_Callback == tmsg->tsm_Callback)
{
AbortIO((IORequest *) timer_slots[t].ts_IORequest);
WaitIO((IORequest *) timer_slots[t].ts_IORequest);
signal_mask &= ~timer_slots[t].ts_SignalBit;
timer_bits &= ~timer_slots[t].ts_SignalBit;
CloseDevice((IORequest *) timer_slots[t].ts_IORequest);
DeleteIORequest((IORequest *) timer_slots[t].ts_IORequest);
DeleteMsgPort(timer_slots[t].ts_Port);
if (t < timers-1)
memmove(&timer_slots[t], &timer_slots[t+1], sizeof (TimerSlot)*(timers-t-1));
timers--;
continue;
}
}
break;
}
default:
warning("MorphOS TimerService received message of unknown type.");
}
}
if (tmsg->tsm_Message.mn_ReplyPort)
ReplyMsg((Message *) tmsg);
else
FreeVec((Message *) tmsg);
}
}
if (signals & SIGBREAKF_CTRL_C)
break;
if (signals & timer_bits)
{
for (t = 0; t < timers; t++)
{
if (signals & timer_slots[t].ts_SignalBit)
{
timerequest *req = timer_slots[t].ts_IORequest;
WaitIO((IORequest *) req);
interval = timer_slots[t].ts_Interval;
(*timer_slots[t].ts_Callback)(engine);
GetSysTime(&end_callback);
SubTime(&end_callback, &start_callback);
interval -= end_callback.tv_sec*1000000+end_callback.tv_micro/1000000+40000;
if (interval < 0)
interval = 0;
req->tr_node.io_Command = TR_ADDREQUEST;
req->tr_time.tv_secs = interval/1000000;
req->tr_time.tv_micro = interval%1000000;
SendIO((IORequest*) req);
}
}
}
}
for (t = 0; t < timers; t++)
{
AbortIO((IORequest *) timer_slots[t].ts_IORequest);
WaitIO((IORequest *) timer_slots[t].ts_IORequest);
CloseDevice((IORequest *) timer_slots[t].ts_IORequest);
DeleteIORequest((IORequest *) timer_slots[t].ts_IORequest);
DeleteMsgPort(timer_slots[t].ts_Port);
}
}
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