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
|
/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "adio.h"
#include "lock_internal.h"
#ifdef ROMIO_NTFS
/* This assumes that lock will always remain in the common directory and
* that the ntfs directory will always be called ad_ntfs. */
#include "..\ad_ntfs\ad_ntfs.h"
int ADIOI_GEN_SetLock(ADIO_File fd, int cmd, int type, ADIO_Offset offset, int whence,
ADIO_Offset len)
{
static char myname[] = "ADIOI_GEN_SetLock";
FDTYPE fd_sys = fd->fd_sys;
int ret_val, error_code = MPI_SUCCESS;
OVERLAPPED Overlapped;
DWORD dwFlags;
MPL_UNREFERENCED_ARG(whence);
if (len == 0)
return MPI_SUCCESS;
dwFlags = type;
Overlapped.hEvent = /*0; */ CreateEvent(NULL, TRUE, FALSE, NULL);
#ifdef HAVE_INT64
Overlapped.Offset = ((DWORD) (offset & (__int64) 0xFFFFFFFF));
Overlapped.OffsetHigh = ((DWORD) ((offset >> 32) & (__int64) 0xFFFFFFFF));
if (cmd == ADIOI_LOCK_CMD) {
/*printf("locking %d\n", (int)fd);fflush(stdout); */
ret_val = LockFileEx(fd_sys, dwFlags, 0,
((DWORD) (len & (__int64) 0xFFFFFFFF)),
((DWORD) ((len >> 32) & (__int64) 0xFFFFFFFF)), &Overlapped);
} else {
/*printf("unlocking %d\n", (int)fd);fflush(stdout); */
ret_val = UnlockFileEx(fd_sys, 0,
((DWORD) (len & (__int64) 0xFFFFFFFF)),
((DWORD) ((len >> 32) & (__int64) 0xFFFFFFFF)), &Overlapped);
}
#else
Overlapped.Offset = offset;
Overlapped.OffsetHigh = 0;
if (cmd == ADIOI_LOCK_CMD) {
/*printf("locking %d\n", (int)fd);fflush(stdout); */
ret_val = LockFileEx(fd_sys, dwFlags, 0, len, 0, &Overlapped);
} else {
/*printf("unlocking %d\n", (int)fd);fflush(stdout); */
ret_val = UnlockFileEx(fd_sys, 0, len, 0, &Overlapped);
}
#endif
if (!ret_val) {
char errMsg[ADIOI_NTFS_ERR_MSG_MAX];
/*
* FPRINTF(stderr, "File locking failed in ADIOI_GEN_SetLock.\n");
* MPI_Abort(MPI_COMM_WORLD, 1);
*/
ret_val = GetLastError();
if (ret_val == ERROR_IO_PENDING) {
DWORD dummy;
ret_val = GetOverlappedResult(fd_sys, &Overlapped, &dummy, TRUE);
if (ret_val) {
CloseHandle(Overlapped.hEvent);
return MPI_SUCCESS;
}
ret_val = GetLastError();
}
ADIOI_NTFS_Strerror(ret_val, errMsg, ADIOI_NTFS_ERR_MSG_MAX);
error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE, myname, __LINE__,
MPI_ERR_IO, "**io", "**io %s", errMsg);
}
CloseHandle(Overlapped.hEvent);
return error_code;
}
#else
int ADIOI_GEN_SetLock(ADIO_File fd, int cmd, int type, ADIO_Offset offset, int whence,
ADIO_Offset len)
{
FDTYPE fd_sys = fd->fd_sys;
int err, error_code, err_count = 0, sav_errno;
struct flock lock;
if (len == 0)
return MPI_SUCCESS;
/* Depending on the compiler flags and options, struct flock
* may not be defined with types that are the same size as
* ADIO_Offsets. */
/* FIXME: This is a temporary hack until we use flock64 where
available. It also doesn't fix the broken Solaris header sys/types.h
header file, which declars off_t as a UNION ! Configure tests to
see if the off64_t is a union if large file support is requested;
if so, it does not select large file support.
*/
#ifdef NEEDS_INT_CAST_WITH_FLOCK
lock.l_type = type;
lock.l_start = (int) offset;
lock.l_whence = whence;
lock.l_len = (int) len;
#else
lock.l_type = type;
lock.l_whence = whence;
lock.l_start = offset;
lock.l_len = len;
#endif
sav_errno = errno; /* save previous errno in case we recover from retryable errors */
errno = 0;
do {
err = fcntl(fd_sys, cmd, &lock);
#ifdef MPL_USE_DBG_LOGGING
/* if (MPL_DBG_SELECTED(ROMIO,TERSE)) */
{
if (err && ((errno == EINTR) || (errno == EINPROGRESS))) {
if ((err_count < 5) || (err_count > 9995)) {
fprintf(stderr,
"File locking failed in ADIOI_GEN_SetLock(fd %#X,cmd %s/%#X,type %s/%#X,whence %#X) with return value %#X and errno %#X. Retry (%d).\n",
fd_sys, ADIOI_GEN_flock_cmd_to_string(cmd), cmd,
ADIOI_GEN_flock_type_to_string(type), type, whence, err, errno,
err_count);
perror("ADIOI_GEN_SetLock:");
fprintf(stderr, "ADIOI_GEN_SetLock:offset %#llx, length %#llx\n",
(unsigned long long) offset, (unsigned long long) len);
}
}
}
#endif
} while (err && ((errno == EINTR) || ((errno == EINPROGRESS) && (++err_count < 10000))));
if (err && (errno != EBADF)) {
/* FIXME: This should use the error message system,
* especially for MPICH */
FPRINTF(stderr,
"This requires fcntl(2) to be implemented. As of 8/25/2011 it is not. Generic MPICH Message: File locking failed in ADIOI_GEN_SetLock(fd %X,cmd %s/%X,type %s/%X,whence %X) with return value %X and errno %X.\n"
"- If the file system is NFS, you need to use NFS version 3, ensure that the lockd daemon is running on all the machines, and mount the directory with the 'noac' option (no attribute caching).\n"
"- If the file system is LUSTRE, ensure that the directory is mounted with the 'flock' option.\n",
fd_sys, ADIOI_GEN_flock_cmd_to_string(cmd), cmd,
ADIOI_GEN_flock_type_to_string(type), type, whence, err, errno);
perror("ADIOI_GEN_SetLock:");
FPRINTF(stderr, "ADIOI_GEN_SetLock:offset %llu, length %llu\n", (unsigned long long) offset,
(unsigned long long) len);
MPI_Abort(MPI_COMM_WORLD, 1);
}
if (!err) /* report fcntl failure errno's (EBADF), otherwise */
errno = sav_errno; /* restore previous errno in case we recovered from retryable errors */
error_code = (err == 0) ? MPI_SUCCESS : MPI_ERR_UNKNOWN;
return error_code;
}
#endif
int ADIOI_GEN_SetLock64(ADIO_File fd, int cmd, int type, ADIO_Offset offset, int whence,
ADIO_Offset len)
{
FDTYPE fd_sys = fd->fd_sys;
int err, error_code;
#ifdef _LARGEFILE64_SOURCE
struct flock64 lock;
#else
struct flock lock;
#endif
if (len == 0)
return MPI_SUCCESS;
lock.l_type = type;
lock.l_start = offset;
lock.l_whence = whence;
lock.l_len = len;
do {
err = fcntl(fd_sys, cmd, &lock);
} while (err && (errno == EINTR));
if (err && (errno != EBADF)) {
FPRINTF(stderr,
"File locking failed in ADIOI_GEN_SetLock64(fd %X,cmd %s/%X,type %s/%X,whence %X) with return value %X and errno %X.\n"
"If the file system is NFS, you need to use NFS version 3, ensure that the lockd daemon is running on all the machines, and mount the directory with the 'noac' option (no attribute caching).\n",
fd_sys, ADIOI_GEN_flock_cmd_to_string(cmd), cmd,
ADIOI_GEN_flock_type_to_string(type), type, whence, err, errno);
perror("ADIOI_GEN_SetLock64:");
FPRINTF(stderr, "ADIOI_GEN_SetLock:offset %llu, length %llu\n", (unsigned long long) offset,
(unsigned long long) len);
MPI_Abort(MPI_COMM_WORLD, 1);
}
error_code = (err == 0) ? MPI_SUCCESS : MPI_ERR_UNKNOWN;
return error_code;
}
|
