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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
|
/*******************************************************************************
* Copyright (c) 2002, 2009 QNX Software Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* QNX Software Systems - initial API and implementation
*
* raise.c
*
* This is a part of JNI implementation of spawner
* Includes implementation of JNI methods (see Spawner.java)
*******************************************************************************/
#include "stdafx.h"
#include <string.h>
#include <stdlib.h>
#include "spawner.h"
#include "SpawnerInputStream.h"
#include "SpawnerOutputStream.h"
#include "jni.h"
#include "io.h"
//#define READ_REPORT
void ThrowByName(JNIEnv *env, const char *name, const char *msg);
#define BUFF_SIZE (1024)
/* Inaccessible static: skipBuffer */
/*
* Class: SpawnerInputStream
* Method: read0
* Signature: (I)I
*/
extern "C"
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_SpawnerInputStream_read0
(JNIEnv * env, jobject proc, jint fd, jbyteArray buf, jint len)
{
jbyte tmpBuf[BUFF_SIZE];
int nBuffOffset = 0;
#ifdef DEBUG_MONITOR
_TCHAR buffer[1000];
#endif
OVERLAPPED overlapped;
overlapped.Offset = 0;
overlapped.OffsetHigh = 0;
overlapped.hEvent = CreateEvent(NULL, // no security attribute
TRUE, // manual-reset event
TRUE, // initial state = signaled
NULL); // unnamed event object
if(NULL == overlapped.hEvent) {
char * lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(wchar_t *) &lpMsgBuf,
0,
NULL
);
ThrowByName(env, "java/io/IOException", lpMsgBuf);
// Free the buffer.
LocalFree( lpMsgBuf );
}
#ifdef DEBUG_MONITOR
#ifdef READ_REPORT
_stprintf(buffer, _T("Start read %i\n"), fd);
OutputDebugStringW(buffer);
#endif
#endif
while(len > nBuffOffset)
{
DWORD nNumberOfBytesToRead = min(len - nBuffOffset, BUFF_SIZE);
DWORD nNumberOfBytesRead;
if(0 == ReadFile((HANDLE)fd, tmpBuf, nNumberOfBytesToRead, &nNumberOfBytesRead, &overlapped ))
{
int err = GetLastError();
if(err == ERROR_IO_PENDING)
{
// asynchronous i/o is still in progress
// check on the results of the asynchronous read
if(GetOverlappedResult((HANDLE)fd, &overlapped,
&nNumberOfBytesRead, TRUE))
err = 0;
// if there was a problem ...
else
err = GetLastError();
}
if(err == ERROR_BROKEN_PIPE) // Pipe was closed
break;
if(err != 0)
{
char * lpMsgBuf;
#ifdef DEBUG_MONITOR
_stprintf(buffer, _T("Read failed - %i, error %i\n"), fd, err);
OutputDebugStringW(buffer);
#endif
if(err != ERROR_MORE_DATA) // Otherwise error means just that there are more data
{ // than buffer can accept
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(wchar_t *) &lpMsgBuf,
0,
NULL
);
ThrowByName(env, "java/io/IOException", lpMsgBuf);
LocalFree( lpMsgBuf );
nBuffOffset = 0;
break;
}
else
{
// buffer overflow?
// according to msdn this happens in message read mode only
#ifdef DEBUG_MONITOR
_stprintf(buffer, _T("Buffer full - %i, bytes read: %i\n"), fd, nNumberOfBytesRead);
OutputDebugStringW(buffer);
#endif
// nNumberOfBytesRead can be 0 here for unknown reason (bug 269223)
nNumberOfBytesRead = nNumberOfBytesToRead;
}
}
}
if(nNumberOfBytesRead > 0)
env->SetByteArrayRegion(buf, nBuffOffset, nNumberOfBytesRead, tmpBuf);
else
break;
nBuffOffset += nNumberOfBytesRead;
if(nNumberOfBytesRead != nNumberOfBytesToRead)
break;
else
{
// Is there data left in the pipe?
DWORD bytesAvailable = 0;
if (!::PeekNamedPipe((HANDLE)fd, NULL, 0, NULL, &bytesAvailable, NULL)
|| bytesAvailable == 0)
// No bytes left
break;
}
}
CloseHandle(overlapped.hEvent);
#ifdef DEBUG_MONITOR
#ifdef READ_REPORT
_stprintf(buffer, _T("End read %i - bytes read: %d\n"), fd, nBuffOffset);
OutputDebugStringW(buffer);
#endif
#endif
return nBuffOffset; // This is a real full readed length
}
/*
* Class: SpawnerInputStream
* Method: close0
* Signature: (I)I
*/
extern "C"
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_SpawnerInputStream_close0
(JNIEnv * env, jobject proc, jint fd)
{
int rc;
#ifdef DEBUG_MONITOR
_TCHAR buffer[1000];
_stprintf(buffer, _T("Close %i\n"), fd);
OutputDebugStringW(buffer);
#endif
rc = (CloseHandle((HANDLE)fd) ? 0 : -1);
#ifdef DEBUG_MONITOR
_stprintf(buffer, _T("Closed %i\n"), fd);
OutputDebugStringW(buffer);
#endif
return (rc ? GetLastError() : 0);
}
extern "C"
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_SpawnerInputStream_available0
(JNIEnv * env, jobject proc, jint fd)
{
DWORD nAvail = 0;
if (0 == PeekNamedPipe((HANDLE)fd, NULL, 0, NULL, &nAvail, NULL)) {
// error
return 0;
}
return nAvail;
}
/*
* Class: SpawnerOutputStream
* Method: write0
* Signature: (I[BI)I
*/
extern "C"
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_SpawnerOutputStream_write0
(JNIEnv * env, jobject proc, jint fd, jbyteArray buf, jint len)
{
jbyte tmpBuf[BUFF_SIZE];
int nBuffOffset = 0;
while(len > nBuffOffset)
{
DWORD nNumberOfBytesToWrite = min(len - nBuffOffset, BUFF_SIZE);
DWORD nNumberOfBytesWritten;
env->GetByteArrayRegion(buf, nBuffOffset, nNumberOfBytesToWrite, tmpBuf);
if(0 == WriteFile((HANDLE)fd, tmpBuf, nNumberOfBytesToWrite, &nNumberOfBytesWritten, NULL))
{
char * lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(wchar_t *) &lpMsgBuf,
0,
NULL
);
ThrowByName(env, "java/io/IOException", lpMsgBuf);
LocalFree( lpMsgBuf );
return 0;
}
nBuffOffset += nNumberOfBytesWritten;
}
return 0;
}
/*
* Class: SpawnerOutputStream
* Method: close0
* Signature: (I)I
*/
extern "C"
JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_spawner_SpawnerOutputStream_close0
(JNIEnv * env, jobject proc, jint fd)
{
int rc;
#ifdef DEBUG_MONITOR
_TCHAR buffer[1000];
_stprintf(buffer, _T("Close %i\n"), fd);
OutputDebugStringW(buffer);
#endif
FlushFileBuffers((HANDLE)fd);
rc = (CloseHandle((HANDLE)fd) ? 0 : -1);
#ifdef DEBUG_MONITOR
_stprintf(buffer, _T("Closed %i\n"), fd);
OutputDebugStringW(buffer);
#endif
return (rc ? GetLastError() : 0);
}
|