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… | |
177 | static mutex_t wrklock = X_MUTEX_INIT; |
177 | static mutex_t wrklock = X_MUTEX_INIT; |
178 | static mutex_t reslock = X_MUTEX_INIT; |
178 | static mutex_t reslock = X_MUTEX_INIT; |
179 | static mutex_t reqlock = X_MUTEX_INIT; |
179 | static mutex_t reqlock = X_MUTEX_INIT; |
180 | static cond_t reqwait = X_COND_INIT; |
180 | static cond_t reqwait = X_COND_INIT; |
181 | |
181 | |
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|
182 | #if !HAVE_PREADWRITE |
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|
183 | /* |
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184 | * make our pread/pwrite emulation safe against themselves, but not against |
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185 | * normal read/write by using a mutex. slows down execution a lot, |
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186 | * but that's your problem, not mine. |
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187 | */ |
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188 | static mutex_t preadwritelock = X_MUTEX_INIT; |
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189 | #endif |
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190 | |
182 | typedef struct etp_worker |
191 | typedef struct etp_worker |
183 | { |
192 | { |
184 | /* locked by wrklock */ |
193 | /* locked by wrklock */ |
185 | struct etp_worker *prev, *next; |
194 | struct etp_worker *prev, *next; |
186 | |
195 | |
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330 | |
339 | |
331 | static void etp_atfork_child (void) |
340 | static void etp_atfork_child (void) |
332 | { |
341 | { |
333 | ETP_REQ *prv; |
342 | ETP_REQ *prv; |
334 | |
343 | |
335 | while (prv = reqq_shift (&req_queue)) |
344 | while ((prv = reqq_shift (&req_queue))) |
336 | ETP_DESTROY (prv); |
345 | ETP_DESTROY (prv); |
337 | |
346 | |
338 | while (prv = reqq_shift (&res_queue)) |
347 | while ((prv = reqq_shift (&res_queue))) |
339 | ETP_DESTROY (prv); |
348 | ETP_DESTROY (prv); |
340 | |
349 | |
341 | while (wrk_first.next != &wrk_first) |
350 | while (wrk_first.next != &wrk_first) |
342 | { |
351 | { |
343 | etp_worker *wrk = wrk_first.next; |
352 | etp_worker *wrk = wrk_first.next; |
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… | |
700 | |
709 | |
701 | #if !HAVE_PREADWRITE |
710 | #if !HAVE_PREADWRITE |
702 | # define pread eio__pread |
711 | # define pread eio__pread |
703 | # define pwrite eio__pwrite |
712 | # define pwrite eio__pwrite |
704 | |
713 | |
705 | /* |
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|
706 | * make our pread/pwrite safe against themselves, but not against |
|
|
707 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
708 | * but that's your problem, not mine. |
|
|
709 | */ |
|
|
710 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
711 | |
|
|
712 | static ssize_t |
714 | static ssize_t |
713 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
715 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
714 | { |
716 | { |
715 | ssize_t res; |
717 | ssize_t res; |
716 | off_t ooffset; |
718 | off_t ooffset; |
… | |
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946 | |
948 | |
947 | if (errno) |
949 | if (errno) |
948 | res = -1; |
950 | res = -1; |
949 | |
951 | |
950 | req->result = res; |
952 | req->result = res; |
|
|
953 | } |
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|
954 | |
|
|
955 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
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|
956 | # define msync(a,b,c) ENOSYS |
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|
957 | #endif |
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|
958 | |
|
|
959 | int |
|
|
960 | eio__mtouch (void *mem, size_t len, int flags) |
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|
961 | { |
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|
962 | intptr_t addr = (intptr_t)mem; |
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963 | intptr_t end = addr + len; |
|
|
964 | #ifdef PAGESIZE |
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|
965 | const intptr_t page = PAGESIZE; |
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|
966 | #else |
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|
967 | static intptr_t page; |
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|
968 | |
|
|
969 | if (!page) |
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|
970 | page = sysconf (_SC_PAGESIZE); |
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|
971 | #endif |
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972 | |
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|
973 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
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|
974 | |
|
|
975 | if (addr < end) |
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|
976 | if (flags) /* modify */ |
|
|
977 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
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|
978 | else |
|
|
979 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
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|
980 | |
|
|
981 | return 0; |
951 | } |
982 | } |
952 | |
983 | |
953 | /*****************************************************************************/ |
984 | /*****************************************************************************/ |
954 | |
985 | |
955 | #define ALLOC(len) \ |
986 | #define ALLOC(len) \ |
… | |
… | |
1122 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1153 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1123 | |
1154 | |
1124 | case EIO_SYNC: req->result = 0; sync (); break; |
1155 | case EIO_SYNC: req->result = 0; sync (); break; |
1125 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1156 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1126 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1157 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
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|
1158 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
|
|
1159 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1127 | |
1160 | |
1128 | case EIO_READDIR: eio__scandir (req, self); break; |
1161 | case EIO_READDIR: eio__scandir (req, self); break; |
1129 | |
1162 | |
1130 | case EIO_BUSY: |
1163 | case EIO_BUSY: |
1131 | #ifdef _WIN32 |
1164 | #ifdef _WIN32 |
… | |
… | |
1170 | case EIO_NOP: |
1203 | case EIO_NOP: |
1171 | req->result = 0; |
1204 | req->result = 0; |
1172 | break; |
1205 | break; |
1173 | |
1206 | |
1174 | case EIO_CUSTOM: |
1207 | case EIO_CUSTOM: |
1175 | req->feed (req); |
1208 | ((void (*)(eio_req *))req->feed) (req); |
1176 | break; |
1209 | break; |
1177 | |
1210 | |
1178 | default: |
1211 | default: |
1179 | req->result = -1; |
1212 | req->result = -1; |
1180 | break; |
1213 | break; |
… | |
… | |
1201 | } |
1234 | } |
1202 | |
1235 | |
1203 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1236 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1204 | { |
1237 | { |
1205 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1238 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
|
|
1239 | } |
|
|
1240 | |
|
|
1241 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
1242 | { |
|
|
1243 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
1244 | } |
|
|
1245 | |
|
|
1246 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
1247 | { |
|
|
1248 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1206 | } |
1249 | } |
1207 | |
1250 | |
1208 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1251 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1209 | { |
1252 | { |
1210 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1253 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
… | |
… | |
1367 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1410 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1368 | } |
1411 | } |
1369 | |
1412 | |
1370 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
1413 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
1371 | { |
1414 | { |
1372 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1415 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
1373 | } |
1416 | } |
1374 | |
1417 | |
1375 | #endif |
1418 | #endif |
1376 | |
1419 | |
1377 | eio_req *eio_grp (eio_cb cb, void *data) |
1420 | eio_req *eio_grp (eio_cb cb, void *data) |