osd_util.h (10746B)
1/* BSDI osd_util.h,v 1.8 1998/06/03 19:14:58 karels Exp */ 2 3/* 4 * Copyright (c) 1996-1999 Distributed Processing Technology Corporation 5 * All rights reserved. 6 * 7 * Redistribution and use in source form, with or without modification, are 8 * permitted provided that redistributions of source code must retain the 9 * above copyright notice, this list of conditions and the following disclaimer. 10 * 11 * This software is provided `as is' by Distributed Processing Technology and 12 * any express or implied warranties, including, but not limited to, the 13 * implied warranties of merchantability and fitness for a particular purpose, 14 * are disclaimed. In no event shall Distributed Processing Technology be 15 * liable for any direct, indirect, incidental, special, exemplary or 16 * consequential damages (including, but not limited to, procurement of 17 * substitute goods or services; loss of use, data, or profits; or business 18 * interruptions) however caused and on any theory of liability, whether in 19 * contract, strict liability, or tort (including negligence or otherwise) 20 * arising in any way out of the use of this driver software, even if advised 21 * of the possibility of such damage. 22 * 23 */ 24 25#ifndef __OSD_UTIL_H 26#define __OSD_UTIL_H 27 28/*File - OSD_UTIL.H 29 **************************************************************************** 30 * 31 *Description: 32 * 33 * This file contains defines and function prototypes that are 34 *operating system dependent. The resources defined in this file 35 *are not specific to any particular application. 36 * 37 *Copyright Distributed Processing Technology, Corp. 38 * 140 Candace Dr. 39 * Maitland, Fl. 32751 USA 40 * Phone: (407) 830-5522 Fax: (407) 260-5366 41 * All Rights Reserved 42 * 43 *Author: Doug Anderson 44 *Date: 1/7/94 45 * 46 *Editors: 47 * 48 *Remarks: 49 * 50 * 51 *****************************************************************************/ 52 53 54/*Definitions - Defines & Constants ----------------------------------------- */ 55 56/*----------------------------- */ 57/* Operating system selections: */ 58/*----------------------------- */ 59 60/*#define _DPT_MSDOS */ 61/*#define _DPT_WIN_3X */ 62/*#define _DPT_WIN_4X */ 63/*#define _DPT_WIN_NT */ 64/*#define _DPT_NETWARE */ 65/*#define _DPT_OS2 */ 66/*#define _DPT_SCO */ 67/*#define _DPT_UNIXWARE */ 68/*#define _DPT_SOLARIS */ 69/*#define _DPT_NEXTSTEP */ 70/*#define _DPT_BANYAN */ 71 72/*-------------------------------- */ 73/* Include the OS specific defines */ 74/*-------------------------------- */ 75 76/*#define OS_SELECTION From Above List */ 77/*#define SEMAPHORE_T ??? */ 78/*#define DLL_HANDLE_T ??? */ 79 80#if (defined(KERNEL) && (defined(__FreeBSD__) || defined(__bsdi__))) 81# include "i386/isa/dpt_osd_defs.h" 82#else 83# include "osd_defs.h" 84#endif 85 86#ifndef DPT_UNALIGNED 87 #define DPT_UNALIGNED 88#endif 89 90#ifndef DPT_EXPORT 91 #define DPT_EXPORT 92#endif 93 94#ifndef DPT_IMPORT 95 #define DPT_IMPORT 96#endif 97 98#ifndef DPT_RUNTIME_IMPORT 99 #define DPT_RUNTIME_IMPORT DPT_IMPORT 100#endif 101 102/*--------------------- */ 103/* OS dependent defines */ 104/*--------------------- */ 105 106#if defined (_DPT_MSDOS) || defined (_DPT_WIN_3X) 107 #define _DPT_16_BIT 108#else 109 #define _DPT_32_BIT 110#endif 111 112#if defined (_DPT_SCO) || defined (_DPT_UNIXWARE) || defined (_DPT_SOLARIS) || defined (_DPT_AIX) || defined (SNI_MIPS) || defined (_DPT_BSDI) || defined (_DPT_FREE_BSD) || defined(_DPT_LINUX) 113 #define _DPT_UNIX 114#endif 115 116#if defined (_DPT_WIN_3x) || defined (_DPT_WIN_4X) || defined (_DPT_WIN_NT) \ 117 || defined (_DPT_OS2) 118 #define _DPT_DLL_SUPPORT 119#endif 120 121#if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X) && !defined (_DPT_NETWARE) 122 #define _DPT_PREEMPTIVE 123#endif 124 125#if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X) 126 #define _DPT_MULTI_THREADED 127#endif 128 129#if !defined (_DPT_MSDOS) 130 #define _DPT_MULTI_TASKING 131#endif 132 133 /* These exist for platforms that */ 134 /* chunk when accessing mis-aligned */ 135 /* data */ 136#if defined (SNI_MIPS) || defined (_DPT_SOLARIS) 137 #if defined (_DPT_BIG_ENDIAN) 138 #if !defined (_DPT_STRICT_ALIGN) 139 #define _DPT_STRICT_ALIGN 140 #endif 141 #endif 142#endif 143 144 /* Determine if in C or C++ mode */ 145#ifdef __cplusplus 146 #define _DPT_CPP 147#else 148 #define _DPT_C 149#endif 150 151/*-------------------------------------------------------------------*/ 152/* Under Solaris the compiler refuses to accept code like: */ 153/* { {"DPT"}, 0, NULL .... }, */ 154/* and complains about the {"DPT"} part by saying "cannot use { } */ 155/* to initialize char*". */ 156/* */ 157/* By defining these ugly macros we can get around this and also */ 158/* not have to copy and #ifdef large sections of code. I know that */ 159/* these macros are *really* ugly, but they should help reduce */ 160/* maintenance in the long run. */ 161/* */ 162/*-------------------------------------------------------------------*/ 163#if !defined (DPTSQO) 164 #if defined (_DPT_SOLARIS) 165 #define DPTSQO 166 #define DPTSQC 167 #else 168 #define DPTSQO { 169 #define DPTSQC } 170 #endif /* solaris */ 171#endif /* DPTSQO */ 172 173 174/*---------------------- */ 175/* OS dependent typedefs */ 176/*---------------------- */ 177 178#if defined (_DPT_MSDOS) || defined (_DPT_SCO) 179 #define BYTE unsigned char 180 #define WORD unsigned short 181#endif 182 183#ifndef _DPT_TYPEDEFS 184 #define _DPT_TYPEDEFS 185 typedef unsigned char uCHAR; 186 typedef unsigned short uSHORT; 187 typedef unsigned int uINT; 188 typedef unsigned long uLONG; 189 190 typedef union { 191 uCHAR u8[4]; 192 uSHORT u16[2]; 193 uLONG u32; 194 } access_U; 195#endif 196 197#if !defined (NULL) 198 #define NULL 0 199#endif 200 201 202/*Prototypes - function ----------------------------------------------------- */ 203 204#ifdef __cplusplus 205 extern "C" { /* Declare all these functions as "C" functions */ 206#endif 207 208/*------------------------ */ 209/* Byte reversal functions */ 210/*------------------------ */ 211 212 /* Reverses the byte ordering of a 2 byte variable */ 213#if (!defined(osdSwap2)) 214 uSHORT osdSwap2(DPT_UNALIGNED uSHORT *); 215#endif // !osdSwap2 216 217 /* Reverses the byte ordering of a 4 byte variable and shifts left 8 bits */ 218#if (!defined(osdSwap3)) 219 uLONG osdSwap3(DPT_UNALIGNED uLONG *); 220#endif // !osdSwap3 221 222 223#ifdef _DPT_NETWARE 224 #include "novpass.h" /* For DPT_Bswapl() prototype */ 225 /* Inline the byte swap */ 226 #ifdef __cplusplus 227 inline uLONG osdSwap4(uLONG *inLong) { 228 return *inLong = DPT_Bswapl(*inLong); 229 } 230 #else 231 #define osdSwap4(inLong) DPT_Bswapl(inLong) 232 #endif // cplusplus 233#else 234 /* Reverses the byte ordering of a 4 byte variable */ 235# if (!defined(osdSwap4)) 236 uLONG osdSwap4(DPT_UNALIGNED uLONG *); 237# endif // !osdSwap4 238 239 /* The following functions ALWAYS swap regardless of the * 240 * presence of DPT_BIG_ENDIAN */ 241 242 uSHORT trueSwap2(DPT_UNALIGNED uSHORT *); 243 uLONG trueSwap4(DPT_UNALIGNED uLONG *); 244 245#endif // netware 246 247 248/*-------------------------------------* 249 * Network order swap functions * 250 * * 251 * These functions/macros will be used * 252 * by the structure insert()/extract() * 253 * functions. * 254 * 255 * We will enclose all structure * 256 * portability modifications inside * 257 * #ifdefs. When we are ready, we * 258 * will #define DPT_PORTABLE to begin * 259 * using the modifications. * 260 *-------------------------------------*/ 261uLONG netSwap4(uLONG val); 262 263#if defined (_DPT_BIG_ENDIAN) 264 265// for big-endian we need to swap 266 267#ifndef NET_SWAP_2 268#define NET_SWAP_2(x) (((x) >> 8) | ((x) << 8)) 269#endif // NET_SWAP_2 270 271#ifndef NET_SWAP_4 272#define NET_SWAP_4(x) netSwap4((x)) 273#endif // NET_SWAP_4 274 275#else 276 277// for little-endian we don't need to do anything 278 279#ifndef NET_SWAP_2 280#define NET_SWAP_2(x) (x) 281#endif // NET_SWAP_2 282 283#ifndef NET_SWAP_4 284#define NET_SWAP_4(x) (x) 285#endif // NET_SWAP_4 286 287#endif // big endian 288 289 290 291/*----------------------------------- */ 292/* Run-time loadable module functions */ 293/*----------------------------------- */ 294 295 /* Loads the specified run-time loadable DLL */ 296DLL_HANDLE_T osdLoadModule(uCHAR *); 297 /* Unloads the specified run-time loadable DLL */ 298uSHORT osdUnloadModule(DLL_HANDLE_T); 299 /* Returns a pointer to a function inside a run-time loadable DLL */ 300void * osdGetFnAddr(DLL_HANDLE_T,uCHAR *); 301 302/*--------------------------------------- */ 303/* Mutually exclusive semaphore functions */ 304/*--------------------------------------- */ 305 306 /* Create a named semaphore */ 307SEMAPHORE_T osdCreateNamedSemaphore(char *); 308 /* Create a mutually exlusive semaphore */ 309SEMAPHORE_T osdCreateSemaphore(void); 310 /* create an event semaphore */ 311SEMAPHORE_T osdCreateEventSemaphore(void); 312 /* create a named event semaphore */ 313SEMAPHORE_T osdCreateNamedEventSemaphore(char *); 314 315 /* Destroy the specified mutually exclusive semaphore object */ 316uSHORT osdDestroySemaphore(SEMAPHORE_T); 317 /* Request access to the specified mutually exclusive semaphore */ 318uLONG osdRequestSemaphore(SEMAPHORE_T,uLONG); 319 /* Release access to the specified mutually exclusive semaphore */ 320uSHORT osdReleaseSemaphore(SEMAPHORE_T); 321 /* wait for a event to happen */ 322uLONG osdWaitForEventSemaphore(SEMAPHORE_T, uLONG); 323 /* signal an event */ 324uLONG osdSignalEventSemaphore(SEMAPHORE_T); 325 /* reset the event */ 326uLONG osdResetEventSemaphore(SEMAPHORE_T); 327 328/*----------------- */ 329/* Thread functions */ 330/*----------------- */ 331 332 /* Releases control to the task switcher in non-preemptive */ 333 /* multitasking operating systems. */ 334void osdSwitchThreads(void); 335 336 /* Starts a thread function */ 337uLONG osdStartThread(void *,void *); 338 339/* what is my thread id */ 340uLONG osdGetThreadID(void); 341 342/* wakes up the specifed thread */ 343void osdWakeThread(uLONG); 344 345/* osd sleep for x milliseconds */ 346void osdSleep(uLONG); 347 348#define DPT_THREAD_PRIORITY_LOWEST 0x00 349#define DPT_THREAD_PRIORITY_NORMAL 0x01 350#define DPT_THREAD_PRIORITY_HIGHEST 0x02 351 352uCHAR osdSetThreadPriority(uLONG tid, uCHAR priority); 353 354#ifdef __cplusplus 355 } /* end the xtern "C" declaration */ 356#endif 357 358#endif /* osd_util_h */