1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/***********************************************************************
**
** Name: fileio.c
**
** Description: Program to copy one file to another.
**
** Modification History:
** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
** The debug mode will print all of the printfs associated with this test.
** The regress mode will be the default mode. Since the regress tool limits
** the output to a one line status:PASS or FAIL,all of the printf statements
** have been handled with an if (debug_mode) statement.
** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
** recognize the return code from tha main program.
** 12-June-97 Revert to return code 0 and 1, remove debug option (obsolete).
***********************************************************************/
/***********************************************************************
** Includes
***********************************************************************/
#include "prinit.h"
#include "prthread.h"
#include "prlock.h"
#include "prcvar.h"
#include "prmon.h"
#include "prmem.h"
#include "prio.h"
#include "prlog.h"
#include <stdio.h>
#include "obsolete/prsem.h"
#define TBSIZE 1024
static PRUint8 tbuf[TBSIZE];
static PRFileDesc *t1, *t2;
PRIntn failed_already=0;
PRIntn debug_mode;
static void InitialSetup(void)
{
PRUintn i;
PRInt32 nWritten, rv;
t1 = PR_Open("t1.tmp", PR_CREATE_FILE | PR_RDWR, 0);
PR_ASSERT(t1 != NULL);
for (i=0; i<TBSIZE; i++) {
tbuf[i] = i;
}
nWritten = PR_Write((PRFileDesc*)t1, tbuf, TBSIZE);
PR_ASSERT(nWritten == TBSIZE);
rv = PR_Seek(t1,0,PR_SEEK_SET);
PR_ASSERT(rv == 0);
t2 = PR_Open("t2.tmp", PR_CREATE_FILE | PR_RDWR, 0);
PR_ASSERT(t2 != NULL);
}
static void VerifyAndCleanup(void)
{
PRUintn i;
PRInt32 nRead, rv;
for (i=0; i<TBSIZE; i++) {
tbuf[i] = 0;
}
rv = PR_Seek(t2,0,PR_SEEK_SET);
PR_ASSERT(rv == 0);
nRead = PR_Read((PRFileDesc*)t2, tbuf, TBSIZE);
PR_ASSERT(nRead == TBSIZE);
for (i=0; i<TBSIZE; i++)
if (tbuf[i] != (PRUint8)i) {
if (debug_mode) {
printf("data mismatch for index= %d \n", i);
}
else {
failed_already=1;
}
}
PR_Close(t1);
PR_Close(t2);
PR_Delete("t1.tmp");
PR_Delete("t2.tmp");
if (debug_mode) {
printf("fileio test passed\n");
}
}
/*------------------ Following is the real test program ---------*/
/*
Program to copy one file to another. Two temporary files get
created. First one gets written in one write call. Then,
a reader thread reads from this file into a double buffer.
The writer thread writes from double buffer into the other
temporary file. The second temporary file gets verified
for accurate data.
*/
PRSemaphore *emptyBufs; /* number of empty buffers */
PRSemaphore *fullBufs; /* number of buffers that are full */
#define BSIZE 100
struct {
char data[BSIZE];
PRUintn nbytes; /* number of bytes in this buffer */
} buf[2];
static void PR_CALLBACK reader(void *arg)
{
PRUintn i = 0;
PRInt32 nbytes;
do {
(void) PR_WaitSem(emptyBufs);
nbytes = PR_Read((PRFileDesc*)arg, buf[i].data, BSIZE);
if (nbytes >= 0) {
buf[i].nbytes = nbytes;
PR_PostSem(fullBufs);
i = (i + 1) % 2;
}
} while (nbytes > 0);
}
static void PR_CALLBACK writer(void *arg)
{
PRUintn i = 0;
PRInt32 nbytes;
do {
(void) PR_WaitSem(fullBufs);
nbytes = buf[i].nbytes;
if (nbytes > 0) {
nbytes = PR_Write((PRFileDesc*)arg, buf[i].data, nbytes);
PR_PostSem(emptyBufs);
i = (i + 1) % 2;
}
} while (nbytes > 0);
}
int main(int argc, char **argv)
{
PRThread *r, *w;
PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
PR_STDIO_INIT();
emptyBufs = PR_NewSem(2); /* two empty buffers */
fullBufs = PR_NewSem(0); /* zero full buffers */
/* Create initial temp file setup */
InitialSetup();
/* create the reader thread */
r = PR_CreateThread(PR_USER_THREAD,
reader, t1,
PR_PRIORITY_NORMAL,
PR_LOCAL_THREAD,
PR_JOINABLE_THREAD,
0);
w = PR_CreateThread(PR_USER_THREAD,
writer, t2,
PR_PRIORITY_NORMAL,
PR_LOCAL_THREAD,
PR_JOINABLE_THREAD,
0);
/* Do the joining for both threads */
(void) PR_JoinThread(r);
(void) PR_JoinThread(w);
/* Do the verification and clean up */
VerifyAndCleanup();
PR_DestroySem(emptyBufs);
PR_DestroySem(fullBufs);
PR_Cleanup();
if(failed_already)
{
printf("Fail\n");
return 1;
}
else
{
printf("PASS\n");
return 0;
}
}
|
