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deb-goldedplus/goldlib/gall/gutlmtsk.cpp

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// This may look like C code, but it is really -*- C++ -*-
// ------------------------------------------------------------------
// The Goldware Library
// Copyright (C) 1990-1999 Odinn Sorensen
// Copyright (C) 1999 Alexander S. Aganichev
// ------------------------------------------------------------------
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library 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
// ------------------------------------------------------------------
// $Id$
// ------------------------------------------------------------------
// Multitasking.
// ------------------------------------------------------------------
#include <cstdlib>
#include <gmemall.h>
#include <gutlmtsk.h>
#ifdef __OS2__
#define INCL_BASE
#include <os2.h>
#endif
#ifdef __WIN32__
#include <windows.h>
#endif
#ifdef __GNUC__
#include <unistd.h>
#endif
// ------------------------------------------------------------------
// Global multitasker data
GMTsk gmtsk;
// ------------------------------------------------------------------
GMTsk::GMTsk() {
detected = GMTSK_NONE;
name = "";
#if defined(__DJGPP__)
detected = GMTSK_DOS;
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name = "DPMI32";
#elif defined(__UNIX__)
detected = GMTSK_LINUX;
name = "UNIX";
#else
if(desqview())
return;
if(win32())
return;
if(os2())
return;
if(windows())
return;
dosint28();
#endif
}
// ------------------------------------------------------------------
int GMTsk::os2() {
#if defined(__OS2__)
detected = GMTSK_OS2;
name = "OS/2";
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#elif !defined(__GNUC__)
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if(_osmajor >= 10) {
detected = GMTSK_OS2;
name = "OS/2";
}
#endif
return detected;
}
// ------------------------------------------------------------------
int GMTsk::win32() {
#if defined(__WIN32__)
#if defined(__BORLANDC__)
if(GetProcAddress(GetModuleHandle("kernel32.dll"), "Borland32")) {
name = "DOS (32RTM.EXE)";
detected = GMTSK_DOS;
return detected;
}
#endif
detected = GMTSK_W32;
name = "Win32";
#endif
return detected;
}
// ------------------------------------------------------------------
int GMTsk::windows() {
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#if defined(__MSDOS__) && !defined(__DJGPP__)
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i86 cpu;
cpu.ax(0x352F);
cpu.genint(0x21);
if(cpu.es() != 0) {
cpu.ax(0x1600);
cpu.genint(0x2F);
if(cpu.ax() & 0x007F) {
detected = GMTSK_WINDOWS;
name = "Windows";
}
}
#endif
return detected;
}
// ------------------------------------------------------------------
int GMTsk::desqview() {
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#if defined(__MSDOS__) && !defined(__DJGPP__)
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i86 cpu;
cpu.cx(0x4445);
cpu.dx(0x5351);
cpu.ax(0x2B01);
cpu.genint(0x21);
if(cpu.al() != 0xFF) {
if(cpu.bx()) {
detected = GMTSK_DESQVIEW;
name = "DESQview";
}
}
#endif
return detected;
}
// ------------------------------------------------------------------
int GMTsk::dosint28() {
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#if defined(__MSDOS__) && !defined(__DJGPP__)
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detected = GMTSK_DOS;
name = "DOS";
#endif
return detected;
}
// ------------------------------------------------------------------
void GMTsk::timeslice() {
#if defined(__DJGPP__)
__dpmi_yield();
#else
#if defined(__MSDOS__)
i86 cpu;
#endif
switch(detected) {
#if defined(__UNIX__)
case GMTSK_LINUX:
usleep(5000);
break;
#endif
#if defined(__WIN32__)
case GMTSK_W32:
Sleep(5);
break;
case GMTSK_DOS:
Sleep(5);
break;
#endif
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#if defined(__MSDOS__) || defined(__OS2__)
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case GMTSK_OS2:
#if defined(__OS2__)
DosSleep(5);
break;
#endif
// Drop through if this is a DOS version
#if defined(__MSDOS__)
case GMTSK_WINDOWS:
cpu.ax(0x1680);
cpu.genint(0x2F);
break;
case GMTSK_DESQVIEW:
cpu.ax(0x1000);
cpu.genint(0x15);
break;
case GMTSK_DOS:
cpu.genint(0x28);
break;
#endif
#endif
}
#endif
}
// ------------------------------------------------------------------