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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 |
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707 | * normal read/write by using a mutex. slows down execution a lot, |
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708 | * but that's your problem, not mine. |
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709 | */ |
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710 | static mutex_t preadwritelock = X_MUTEX_INIT; |
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711 | |
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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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903 | int memlen = 4096; |
905 | int memlen = 4096; |
904 | int memofs = 0; |
906 | int memofs = 0; |
905 | int res = 0; |
907 | int res = 0; |
906 | |
908 | |
907 | X_LOCK (wrklock); |
909 | X_LOCK (wrklock); |
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910 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
908 | self->dirp = dirp = opendir (req->ptr1); |
911 | self->dirp = dirp = opendir (req->ptr1); |
909 | req->flags |= EIO_FLAG_PTR2_FREE; |
912 | req->flags |= EIO_FLAG_PTR2_FREE; |
910 | req->ptr2 = names = malloc (memlen); |
913 | req->ptr2 = names = malloc (memlen); |
911 | X_UNLOCK (wrklock); |
914 | X_UNLOCK (wrklock); |
912 | |
915 | |