1 | #define _XOPEN_SOURCE 500 |
1 | #define _REENTRANT 1 |
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2 | #include <errno.h> |
2 | |
3 | |
3 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "perl.h" |
5 | #include "XSUB.h" |
6 | #include "XSUB.h" |
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7 | |
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8 | #include "autoconf/config.h" |
6 | |
9 | |
7 | #include <sys/types.h> |
10 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
11 | #include <sys/stat.h> |
9 | |
12 | |
10 | #include <unistd.h> |
13 | #include <unistd.h> |
11 | #include <fcntl.h> |
14 | #include <fcntl.h> |
12 | #include <signal.h> |
15 | #include <signal.h> |
13 | #include <sched.h> |
16 | #include <sched.h> |
14 | #if __linux |
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15 | #include <sys/syscall.h> |
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16 | #endif |
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17 | |
17 | |
18 | #include <pthread.h> |
18 | #include <pthread.h> |
19 | |
19 | |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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233 | req->type = REQ_QUIT; |
233 | req->type = REQ_QUIT; |
234 | |
234 | |
235 | send_req (req); |
235 | send_req (req); |
236 | } |
236 | } |
237 | |
237 | |
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238 | /* work around various missing functions */ |
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239 | |
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240 | #if !HAVE_PREADWRITE |
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241 | # define pread aio_pread |
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242 | # define pwrite aio_pwrite |
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243 | |
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244 | /* |
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245 | * make our pread/pwrite safe against themselves, but not against |
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246 | * normal read/write by using a mutex. slows down execution a lot, |
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247 | * but that's your problem, not mine. |
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248 | */ |
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249 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
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250 | |
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251 | static ssize_t |
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252 | pread (int fd, void *buf, size_t count, off_t offset) |
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253 | { |
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254 | ssize_t res; |
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255 | off_t ooffset; |
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256 | |
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257 | pthread_mutex_lock (&iolock); |
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258 | ooffset = lseek (fd, 0, SEEK_CUR); |
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259 | lseek (fd, offset, SEEK_SET); |
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260 | res = read (fd, buf, count); |
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261 | lseek (fd, ooffset, SEEK_SET); |
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262 | pthread_mutex_unlock (&iolock); |
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263 | |
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264 | return res; |
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265 | } |
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266 | |
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267 | static ssize_t |
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268 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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269 | { |
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270 | ssize_t res; |
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271 | off_t ooffset; |
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272 | |
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273 | pthread_mutex_lock (&iolock); |
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274 | ooffset = lseek (fd, 0, SEEK_CUR); |
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275 | lseek (fd, offset, SEEK_SET); |
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276 | res = write (fd, buf, count); |
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277 | lseek (fd, offset, SEEK_SET); |
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278 | pthread_mutex_unlock (&iolock); |
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279 | |
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280 | return res; |
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281 | } |
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282 | #endif |
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283 | |
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284 | #if !HAVE_FDATASYNC |
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285 | # define fdatasync fsync |
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286 | #endif |
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287 | |
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288 | #if !HAVE_READAHEAD |
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289 | # define readahead aio_readahead |
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290 | |
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291 | static char readahead_buf[4096]; |
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292 | |
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293 | static ssize_t |
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294 | readahead (int fd, off_t offset, size_t count) |
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295 | { |
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296 | while (count > 0) |
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297 | { |
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298 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
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299 | |
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300 | pread (fd, readahead_buf, len, offset); |
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301 | offset += len; |
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302 | count -= len; |
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303 | } |
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304 | |
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305 | errno = 0; |
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306 | } |
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307 | #endif |
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308 | |
238 | static void * |
309 | static void * |
239 | aio_proc (void *thr_arg) |
310 | aio_proc (void *thr_arg) |
240 | { |
311 | { |
241 | aio_req req; |
312 | aio_req req; |
242 | int type; |
313 | int type; |
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269 | |
340 | |
270 | switch (type) |
341 | switch (type) |
271 | { |
342 | { |
272 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
343 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
273 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
344 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
274 | #if SYS_readahead |
345 | |
275 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
346 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
276 | #else |
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277 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
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278 | #endif |
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279 | |
347 | |
280 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
348 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
281 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
349 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
282 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
350 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
283 | |
351 | |
284 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
352 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
285 | case REQ_CLOSE: req->result = close (req->fd); break; |
353 | case REQ_CLOSE: req->result = close (req->fd); break; |
286 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
354 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
287 | |
355 | |
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356 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
288 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
357 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
289 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
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290 | |
358 | |
291 | case REQ_QUIT: |
359 | case REQ_QUIT: |
292 | break; |
360 | break; |
293 | |
361 | |
294 | default: |
362 | default: |