source: trunk/src/kernel32/async.cpp@ 112

Last change on this file since 112 was 112, checked in by phaller, 26 years ago

Fix: major restructuring of Open32 handle management, HandleManager
File size: 6.5 KB
Line 
1/* $Id: async.cpp,v 1.5 1999-06-17 18:25:22 phaller Exp $ */
2
3/*
4 * Win32 Asynchronous I/O Subsystem for OS/2
5 *
6 * 1998/04/10 PH Patrick Haller (haller@zebra.fh-weingarten.de)
7 *
8 * @(#) Async.Cpp 1.0.0 1998/04/10 PH start
9 *
10 * Project Odin Software License can be found in LICENSE.TXT
11 *
12 */
13
14#ifndef _ASYNCIOSUBSYSTEM_H_
15#define _ASYNCIOSUBSYSTEM_H_
16
17
18/*****************************************************************************
19 * Remark *
20 *****************************************************************************
21
22 ReadFileEx
23
24 */
25
26
27
28/*****************************************************************************
29 * Includes *
30 *****************************************************************************/
31
32#define INCL_WIN
33#define INCL_DOSMEMMGR
34#define INCL_DOSSEMAPHORES
35#define INCL_DOSERRORS
36#define INCL_DOSPROCESS
37#define INCL_DOSMODULEMGR
38#define INCL_VIO
39#define INCL_AVIO
40#include <os2.h>
41#include <builtin.h>
42
43#include <stdlib.h>
44#include <string.h>
45#include "win32type.h"
46#include "misc.h"
47#include "unicode.h"
48
49#include "conwin.h" // Windows Header for console only
50#include "handlemanager.h"
51
52
53/*****************************************************************************
54 * Defines & Macros *
55 *****************************************************************************/
56
57
58/*****************************************************************************
59 * Structures *
60 *****************************************************************************/
61
62typedef struct _IORequest
63{
64 struct _IORequest *pNext; /* pointer to next I/O request */
65
66 APIRET rc; /* result code of I/O request */
67
68} IOREQUEST, *PIOREQUEST;
69
70
71typedef struct _Globals
72{
73 HEV hevIOEvent; /* asynchronous I/O event completed ! */
74 TID tidIO; /* I/O thread */
75} GLOBALS, *PGLOBALS;
76
77static GLOBALS Globals;
78
79
80/*****************************************************************************
81 * Name :
82 * Purpose :
83 * Parameters:
84 * Variables :
85 * Result :
86 * Remark :
87 * Status :
88 *
89 * Author : Patrick Haller [Tue, 1998/02/10 01:55]
90 *****************************************************************************/
91
92DWORD WIN32API SleepEx(DWORD dwTimeout,
93 BOOL fAlertable)
94{
95
96 dprintf(("KERNEL32: SleepEx(%u,%u)\n",
97 dwTimeout,
98 fAlertable));
99
100 /* @@@PH could be implemented as a timed wait on a event semaphore */
101 /* for the WAIT_IO_COMPLETION flag */
102
103 if (fAlertable == FALSE)
104 DosSleep(dwTimeout);
105 else {
106 dprintf(("SleepEx: Wait for io completion not supported!"));
107 DosSleep(1);
108 }
109
110 return (0);
111}
112
113
114/*****************************************************************************
115 * Name : BOOL ReadFileEx
116 * Purpose : The ReadFileEx function reads data from a file asynchronously.
117 * It is designed solely for asynchronous operation, unlike the
118 * ReadFile function, which is designed for both synchronous and
119 * asynchronous operation. ReadFileEx lets an application perform
120 * other processing during a file read operation.
121 * The ReadFileEx function reports its completion status asynchronously,
122 * calling a specified completion routine when reading is completed
123 * and the calling thread is in an alertable wait state.
124 * Parameters: HANDLE hFile handle of file to read
125 * LPVOID lpBuffer address of buffer
126 * DWORD nNumberOfBytesToRead number of bytes to read
127 * LPOVERLAPPED lpOverlapped address of offset
128 * LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine address of completion routine
129 * Variables :
130 * Result : TRUE / FALSE
131 * Remark :
132 * Status : UNTESTED STUB
133 *
134 * Author : Patrick Haller [Mon, 1998/06/15 08:00]
135 *****************************************************************************/
136
137#define LPOVERLAPPED_COMPLETION_ROUTINE LPVOID
138
139DWORD WIN32API ReadFileEx(HANDLE hFile,
140 LPVOID lpBuffer,
141 DWORD nNumberOfBytesToRead,
142 LPOVERLAPPED lpOverlapped,
143 LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
144{
145 dprintf(("Kernel32: ReadFileEx(%08xh,%08xh,%08xh,%08xh,%08xh) not implemented.\n",
146 hFile,
147 lpBuffer,
148 nNumberOfBytesToRead,
149 lpOverlapped,
150 lpCompletionRoutine));
151
152
153 return (FALSE);
154}
155
156
157/*****************************************************************************
158 * Name : BOOL WriteFileEx
159 * Purpose : The WriteFileEx function writes data to a file. It is designed
160 * solely for asynchronous operation, unlike WriteFile, which is
161 * designed for both synchronous and asynchronous operation.
162 * WriteFileEx reports its completion status asynchronously,
163 * calling a specified completion routine when writing is completed
164 * and the calling thread is in an alertable wait state.
165 * Parameters: HANDLE hFile handle of file to write
166 * LPVOID lpBuffer address of buffer
167 * DWORD nNumberOfBytesToRead number of bytes to write
168 * LPOVERLAPPED lpOverlapped address of offset
169 * LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine address of completion routine
170 * Variables :
171 * Result : TRUE / FALSE
172 * Remark :
173 * Status : UNTESTED STUB
174 *
175 * Author : Patrick Haller [Mon, 1998/06/15 08:00]
176 *****************************************************************************/
177
178DWORD WIN32API WriteFileEx(HANDLE hFile,
179 LPVOID lpBuffer,
180 DWORD nNumberOfBytesToWrite,
181 LPOVERLAPPED lpOverlapped,
182 LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
183{
184 dprintf(("Kernel32: WriteFileEx(%08xh,%08xh,%08xh,%08xh,%08xh) not implemented.\n",
185 hFile,
186 lpBuffer,
187 nNumberOfBytesToWrite,
188 lpOverlapped,
189 lpCompletionRoutine));
190
191
192 return (FALSE);
193}
194
195
196#endif /* _ASYNCIOSUBSYSTEM_H_ */
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