|
|
1 | #define _REENTRANT 1 |
|
|
2 | #include <errno.h> |
|
|
3 | |
1 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
2 | #include "perl.h" |
5 | #include "perl.h" |
3 | #include "XSUB.h" |
6 | #include "XSUB.h" |
4 | |
7 | |
|
|
8 | #include "autoconf/config.h" |
|
|
9 | |
5 | #include <sys/types.h> |
10 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
11 | #include <sys/stat.h> |
|
|
12 | |
7 | #include <unistd.h> |
13 | #include <unistd.h> |
8 | #include <fcntl.h> |
14 | #include <fcntl.h> |
9 | #include <signal.h> |
15 | #include <signal.h> |
10 | #include <sched.h> |
16 | #include <sched.h> |
11 | #include <endian.h> |
|
|
12 | |
17 | |
13 | #include <pthread.h> |
18 | #include <pthread.h> |
14 | #include <sys/syscall.h> |
|
|
15 | |
19 | |
16 | 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 ;) */ |
17 | 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 ;) */ |
18 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
19 | |
23 | |
… | |
… | |
25 | |
29 | |
26 | enum { |
30 | enum { |
27 | REQ_QUIT, |
31 | REQ_QUIT, |
28 | REQ_OPEN, REQ_CLOSE, |
32 | REQ_OPEN, REQ_CLOSE, |
29 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
30 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
31 | REQ_FSYNC, REQ_FDATASYNC, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
|
|
36 | REQ_UNLINK, REQ_RMDIR, |
|
|
37 | REQ_SYMLINK, |
32 | }; |
38 | }; |
33 | |
39 | |
34 | typedef struct aio_cb { |
40 | typedef struct aio_cb { |
35 | struct aio_cb *volatile next; |
41 | struct aio_cb *volatile next; |
36 | |
42 | |
… | |
… | |
40 | off_t offset; |
46 | off_t offset; |
41 | size_t length; |
47 | size_t length; |
42 | ssize_t result; |
48 | ssize_t result; |
43 | mode_t mode; /* open */ |
49 | mode_t mode; /* open */ |
44 | int errorno; |
50 | int errorno; |
45 | SV *data, *callback; |
51 | SV *data, *callback, *fh; |
46 | void *dataptr; |
52 | void *dataptr, *data2ptr; |
47 | STRLEN dataoffset; |
53 | STRLEN dataoffset; |
48 | |
54 | |
49 | Stat_t *statdata; |
55 | Stat_t *statdata; |
50 | } aio_cb; |
56 | } aio_cb; |
51 | |
57 | |
52 | typedef aio_cb *aio_req; |
58 | typedef aio_cb *aio_req; |
53 | |
59 | |
54 | static int started; |
60 | static int started; |
55 | static int nreqs; |
61 | static volatile int nreqs; |
56 | static int max_outstanding = 1<<30; |
62 | static int max_outstanding = 1<<30; |
57 | static int respipe [2]; |
63 | static int respipe [2]; |
58 | |
64 | |
59 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
60 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
67 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
62 | |
68 | |
63 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
69 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
64 | static volatile aio_req ress, rese; /* queue start, queue end */ |
70 | static volatile aio_req ress, rese; /* queue start, queue end */ |
65 | |
71 | |
|
|
72 | static void free_req (aio_req req) |
|
|
73 | { |
|
|
74 | if (req->data) |
|
|
75 | SvREFCNT_dec (req->data); |
|
|
76 | |
|
|
77 | if (req->fh) |
|
|
78 | SvREFCNT_dec (req->fh); |
|
|
79 | |
|
|
80 | if (req->statdata) |
|
|
81 | Safefree (req->statdata); |
|
|
82 | |
|
|
83 | if (req->callback) |
|
|
84 | SvREFCNT_dec (req->callback); |
|
|
85 | |
|
|
86 | Safefree (req); |
|
|
87 | } |
|
|
88 | |
66 | static void |
89 | static void |
67 | poll_wait () |
90 | poll_wait () |
68 | { |
91 | { |
69 | if (!nreqs) |
92 | if (nreqs && !ress) |
70 | return; |
93 | { |
71 | |
|
|
72 | fd_set rfd; |
94 | fd_set rfd; |
73 | FD_ZERO(&rfd); |
95 | FD_ZERO(&rfd); |
74 | FD_SET(respipe [0], &rfd); |
96 | FD_SET(respipe [0], &rfd); |
75 | |
97 | |
76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
98 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
|
|
99 | } |
77 | } |
100 | } |
78 | |
101 | |
79 | static int |
102 | static int |
80 | poll_cb () |
103 | poll_cb () |
81 | { |
104 | { |
82 | dSP; |
105 | dSP; |
83 | int count = 0; |
106 | int count = 0; |
|
|
107 | int do_croak = 0; |
84 | aio_req req; |
108 | aio_req req; |
85 | |
|
|
86 | { |
|
|
87 | /* read and signals sent by the worker threads */ |
|
|
88 | char buf [32]; |
|
|
89 | while (read (respipe [0], buf, 32) > 0) |
|
|
90 | ; |
|
|
91 | } |
|
|
92 | |
109 | |
93 | for (;;) |
110 | for (;;) |
94 | { |
111 | { |
95 | pthread_mutex_lock (&reslock); |
112 | pthread_mutex_lock (&reslock); |
96 | |
|
|
97 | req = ress; |
113 | req = ress; |
98 | |
114 | |
99 | if (ress) |
115 | if (req) |
100 | { |
116 | { |
101 | ress = ress->next; |
117 | ress = req->next; |
|
|
118 | |
102 | if (!ress) rese = 0; |
119 | if (!ress) |
|
|
120 | { |
|
|
121 | rese = 0; |
|
|
122 | |
|
|
123 | /* read any signals sent by the worker threads */ |
|
|
124 | char buf [32]; |
|
|
125 | while (read (respipe [0], buf, 32) == 32) |
|
|
126 | ; |
|
|
127 | } |
103 | } |
128 | } |
104 | |
129 | |
105 | pthread_mutex_unlock (&reslock); |
130 | pthread_mutex_unlock (&reslock); |
106 | |
131 | |
107 | if (!req) |
132 | if (!req) |
… | |
… | |
115 | { |
140 | { |
116 | int errorno = errno; |
141 | int errorno = errno; |
117 | errno = req->errorno; |
142 | errno = req->errorno; |
118 | |
143 | |
119 | if (req->type == REQ_READ) |
144 | if (req->type == REQ_READ) |
120 | SvCUR_set (req->data, req->dataoffset |
145 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
121 | + req->result > 0 ? req->result : 0); |
|
|
122 | |
146 | |
123 | if (req->data) |
147 | if (req->statdata) |
124 | SvREFCNT_dec (req->data); |
|
|
125 | |
|
|
126 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
|
|
127 | { |
148 | { |
128 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
149 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
129 | PL_laststatval = req->result; |
150 | PL_laststatval = req->result; |
130 | PL_statcache = *(req->statdata); |
151 | PL_statcache = *(req->statdata); |
131 | |
|
|
132 | Safefree (req->statdata); |
|
|
133 | } |
152 | } |
134 | |
153 | |
|
|
154 | ENTER; |
135 | PUSHMARK (SP); |
155 | PUSHMARK (SP); |
136 | XPUSHs (sv_2mortal (newSViv (req->result))); |
156 | XPUSHs (sv_2mortal (newSViv (req->result))); |
137 | |
157 | |
138 | if (req->type == REQ_OPEN) |
158 | if (req->type == REQ_OPEN) |
139 | { |
159 | { |
… | |
… | |
142 | |
162 | |
143 | PUTBACK; |
163 | PUTBACK; |
144 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
164 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
145 | SPAGAIN; |
165 | SPAGAIN; |
146 | |
166 | |
147 | fh = POPs; |
167 | fh = SvREFCNT_inc (POPs); |
148 | |
168 | |
149 | PUSHMARK (SP); |
169 | PUSHMARK (SP); |
150 | XPUSHs (fh); |
170 | XPUSHs (sv_2mortal (fh)); |
151 | } |
171 | } |
152 | |
172 | |
|
|
173 | if (SvOK (req->callback)) |
|
|
174 | { |
153 | PUTBACK; |
175 | PUTBACK; |
154 | call_sv (req->callback, G_VOID | G_EVAL); |
176 | call_sv (req->callback, G_VOID | G_EVAL); |
155 | SPAGAIN; |
177 | SPAGAIN; |
|
|
178 | |
|
|
179 | if (SvTRUE (ERRSV)) |
|
|
180 | { |
|
|
181 | free_req (req); |
|
|
182 | croak (0); |
|
|
183 | } |
156 | |
184 | } |
157 | if (req->callback) |
185 | |
158 | SvREFCNT_dec (req->callback); |
186 | LEAVE; |
159 | |
187 | |
160 | errno = errorno; |
188 | errno = errorno; |
161 | count++; |
189 | count++; |
162 | } |
190 | } |
163 | |
191 | |
164 | Safefree (req); |
192 | free_req (req); |
165 | } |
193 | } |
166 | |
194 | |
167 | return count; |
195 | return count; |
168 | } |
196 | } |
169 | |
197 | |
… | |
… | |
207 | reqe = reqs = req; |
235 | reqe = reqs = req; |
208 | |
236 | |
209 | pthread_cond_signal (&reqwait); |
237 | pthread_cond_signal (&reqwait); |
210 | pthread_mutex_unlock (&reqlock); |
238 | pthread_mutex_unlock (&reqlock); |
211 | |
239 | |
212 | while (nreqs > max_outstanding) |
240 | if (nreqs > max_outstanding) |
|
|
241 | for (;;) |
|
|
242 | { |
|
|
243 | poll_cb (); |
|
|
244 | |
|
|
245 | if (nreqs <= max_outstanding) |
|
|
246 | break; |
|
|
247 | |
|
|
248 | poll_wait (); |
|
|
249 | } |
|
|
250 | } |
|
|
251 | |
|
|
252 | static void |
|
|
253 | end_thread (void) |
|
|
254 | { |
|
|
255 | aio_req req; |
|
|
256 | Newz (0, req, 1, aio_cb); |
|
|
257 | req->type = REQ_QUIT; |
|
|
258 | |
|
|
259 | send_req (req); |
|
|
260 | } |
|
|
261 | |
|
|
262 | static void min_parallel (int nthreads) |
|
|
263 | { |
|
|
264 | while (nthreads > started) |
|
|
265 | start_thread (); |
|
|
266 | } |
|
|
267 | |
|
|
268 | static void max_parallel (int nthreads) |
|
|
269 | { |
|
|
270 | int cur = started; |
|
|
271 | |
|
|
272 | while (cur > nthreads) |
|
|
273 | { |
|
|
274 | end_thread (); |
|
|
275 | cur--; |
|
|
276 | } |
|
|
277 | |
|
|
278 | while (started > nthreads) |
213 | { |
279 | { |
214 | poll_wait (); |
280 | poll_wait (); |
215 | poll_cb (); |
281 | poll_cb (); |
216 | } |
282 | } |
217 | } |
283 | } |
218 | |
284 | |
219 | static void |
285 | static void create_pipe () |
220 | end_thread (void) |
|
|
221 | { |
286 | { |
222 | aio_req req; |
287 | if (pipe (respipe)) |
223 | New (0, req, 1, aio_cb); |
288 | croak ("unable to initialize result pipe"); |
224 | req->type = REQ_QUIT; |
|
|
225 | |
289 | |
226 | send_req (req); |
290 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
227 | } |
291 | croak ("cannot set result pipe to nonblocking mode"); |
228 | |
292 | |
229 | static void |
293 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
230 | read_write (int dowrite, int fd, off_t offset, size_t length, |
294 | croak ("cannot set result pipe to nonblocking mode"); |
231 | SV *data, STRLEN dataoffset, SV *callback) |
295 | } |
232 | { |
|
|
233 | aio_req req; |
|
|
234 | STRLEN svlen; |
|
|
235 | char *svptr = SvPV (data, svlen); |
|
|
236 | |
296 | |
237 | SvUPGRADE (data, SVt_PV); |
297 | static void atfork_prepare (void) |
238 | SvPOK_on (data); |
298 | { |
|
|
299 | for (;;) { |
239 | |
300 | |
240 | if (dataoffset < 0) |
301 | for (;;) |
241 | dataoffset += svlen; |
302 | { |
|
|
303 | poll_cb (); |
242 | |
304 | |
243 | if (dataoffset < 0 || dataoffset > svlen) |
305 | if (!nreqs) |
244 | croak ("data offset outside of string"); |
306 | break; |
245 | |
307 | |
246 | if (dowrite) |
308 | poll_wait (); |
|
|
309 | } |
|
|
310 | |
|
|
311 | pthread_mutex_lock (&reqlock); |
|
|
312 | |
|
|
313 | if (!nreqs) |
|
|
314 | break; |
|
|
315 | |
|
|
316 | pthread_mutex_unlock (&reqlock); |
|
|
317 | } |
|
|
318 | |
|
|
319 | pthread_mutex_lock (&reslock); |
|
|
320 | |
|
|
321 | assert (!nreqs && !reqs && !ress); |
|
|
322 | } |
|
|
323 | |
|
|
324 | static void atfork_parent (void) |
|
|
325 | { |
|
|
326 | pthread_mutex_unlock (&reslock); |
|
|
327 | pthread_mutex_unlock (&reqlock); |
|
|
328 | } |
|
|
329 | |
|
|
330 | static void atfork_child (void) |
|
|
331 | { |
|
|
332 | int restart = started; |
|
|
333 | started = 0; |
|
|
334 | |
|
|
335 | atfork_parent (); |
|
|
336 | |
|
|
337 | min_parallel (restart); |
|
|
338 | } |
|
|
339 | |
|
|
340 | /*****************************************************************************/ |
|
|
341 | /* work around various missing functions */ |
|
|
342 | |
|
|
343 | #if !HAVE_PREADWRITE |
|
|
344 | # define pread aio_pread |
|
|
345 | # define pwrite aio_pwrite |
|
|
346 | |
|
|
347 | /* |
|
|
348 | * make our pread/pwrite safe against themselves, but not against |
|
|
349 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
350 | * but that's your problem, not mine. |
|
|
351 | */ |
|
|
352 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
|
|
353 | |
|
|
354 | static ssize_t |
|
|
355 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
356 | { |
|
|
357 | ssize_t res; |
|
|
358 | off_t ooffset; |
|
|
359 | |
|
|
360 | pthread_mutex_lock (&iolock); |
|
|
361 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
362 | lseek (fd, offset, SEEK_SET); |
|
|
363 | res = read (fd, buf, count); |
|
|
364 | lseek (fd, ooffset, SEEK_SET); |
|
|
365 | pthread_mutex_unlock (&iolock); |
|
|
366 | |
|
|
367 | return res; |
|
|
368 | } |
|
|
369 | |
|
|
370 | static ssize_t |
|
|
371 | pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
372 | { |
|
|
373 | ssize_t res; |
|
|
374 | off_t ooffset; |
|
|
375 | |
|
|
376 | pthread_mutex_lock (&iolock); |
|
|
377 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
378 | lseek (fd, offset, SEEK_SET); |
|
|
379 | res = write (fd, buf, count); |
|
|
380 | lseek (fd, offset, SEEK_SET); |
|
|
381 | pthread_mutex_unlock (&iolock); |
|
|
382 | |
|
|
383 | return res; |
|
|
384 | } |
|
|
385 | #endif |
|
|
386 | |
|
|
387 | #if !HAVE_FDATASYNC |
|
|
388 | # define fdatasync fsync |
|
|
389 | #endif |
|
|
390 | |
|
|
391 | #if !HAVE_READAHEAD |
|
|
392 | # define readahead aio_readahead |
|
|
393 | |
|
|
394 | static char readahead_buf[4096]; |
|
|
395 | |
|
|
396 | static ssize_t |
|
|
397 | readahead (int fd, off_t offset, size_t count) |
|
|
398 | { |
|
|
399 | while (count > 0) |
247 | { |
400 | { |
248 | /* write: check length and adjust. */ |
401 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
249 | if (length < 0 || length + dataoffset > svlen) |
402 | |
250 | length = svlen - dataoffset; |
403 | pread (fd, readahead_buf, len, offset); |
|
|
404 | offset += len; |
|
|
405 | count -= len; |
251 | } |
406 | } |
252 | else |
|
|
253 | { |
|
|
254 | /* read: grow scalar as necessary */ |
|
|
255 | svptr = SvGROW (data, length + dataoffset); |
|
|
256 | } |
|
|
257 | |
407 | |
258 | if (length < 0) |
408 | errno = 0; |
259 | croak ("length must not be negative"); |
|
|
260 | |
|
|
261 | Newz (0, req, 1, aio_cb); |
|
|
262 | |
|
|
263 | if (!req) |
|
|
264 | croak ("out of memory during aio_req allocation"); |
|
|
265 | |
|
|
266 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
|
|
267 | req->fd = fd; |
|
|
268 | req->offset = offset; |
|
|
269 | req->length = length; |
|
|
270 | req->data = SvREFCNT_inc (data); |
|
|
271 | req->dataptr = (char *)svptr + dataoffset; |
|
|
272 | req->callback = SvREFCNT_inc (callback); |
|
|
273 | |
|
|
274 | send_req (req); |
|
|
275 | } |
409 | } |
|
|
410 | #endif |
|
|
411 | |
|
|
412 | /*****************************************************************************/ |
276 | |
413 | |
277 | static void * |
414 | static void * |
278 | aio_proc (void *thr_arg) |
415 | aio_proc (void *thr_arg) |
279 | { |
416 | { |
280 | aio_req req; |
417 | aio_req req; |
… | |
… | |
306 | |
443 | |
307 | type = req->type; |
444 | type = req->type; |
308 | |
445 | |
309 | switch (type) |
446 | switch (type) |
310 | { |
447 | { |
311 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
448 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
312 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
449 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
313 | #if SYS_readahead |
450 | |
314 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
451 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
315 | #else |
|
|
316 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
317 | #endif |
|
|
318 | |
452 | |
319 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
453 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
320 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
454 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
321 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
455 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
322 | |
456 | |
323 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
457 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
324 | case REQ_CLOSE: req->result = close (req->fd); break; |
458 | case REQ_CLOSE: req->result = close (req->fd); break; |
325 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
459 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
460 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
461 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
326 | |
462 | |
|
|
463 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
327 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
464 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
328 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
329 | |
465 | |
330 | case REQ_QUIT: |
466 | case REQ_QUIT: |
331 | break; |
467 | break; |
332 | |
468 | |
333 | default: |
469 | default: |
… | |
… | |
359 | while (type != REQ_QUIT); |
495 | while (type != REQ_QUIT); |
360 | |
496 | |
361 | return 0; |
497 | return 0; |
362 | } |
498 | } |
363 | |
499 | |
|
|
500 | #define dREQ \ |
|
|
501 | aio_req req; \ |
|
|
502 | \ |
|
|
503 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
504 | croak ("clalback must be undef or of reference type"); \ |
|
|
505 | \ |
|
|
506 | Newz (0, req, 1, aio_cb); \ |
|
|
507 | if (!req) \ |
|
|
508 | croak ("out of memory during aio_req allocation"); \ |
|
|
509 | \ |
|
|
510 | req->callback = newSVsv (callback); |
|
|
511 | |
364 | MODULE = IO::AIO PACKAGE = IO::AIO |
512 | MODULE = IO::AIO PACKAGE = IO::AIO |
365 | |
513 | |
|
|
514 | PROTOTYPES: ENABLE |
|
|
515 | |
366 | BOOT: |
516 | BOOT: |
367 | { |
517 | { |
368 | if (pipe (respipe)) |
518 | create_pipe (); |
369 | croak ("unable to initialize result pipe"); |
519 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
370 | |
|
|
371 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
372 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
373 | |
|
|
374 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
375 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
376 | } |
520 | } |
377 | |
521 | |
378 | void |
522 | void |
379 | min_parallel(nthreads) |
523 | min_parallel(nthreads) |
380 | int nthreads |
524 | int nthreads |
381 | PROTOTYPE: $ |
525 | PROTOTYPE: $ |
382 | CODE: |
|
|
383 | while (nthreads > started) |
|
|
384 | start_thread (); |
|
|
385 | |
526 | |
386 | void |
527 | void |
387 | max_parallel(nthreads) |
528 | max_parallel(nthreads) |
388 | int nthreads |
529 | int nthreads |
389 | PROTOTYPE: $ |
530 | PROTOTYPE: $ |
390 | CODE: |
|
|
391 | { |
|
|
392 | int cur = started; |
|
|
393 | while (cur > nthreads) |
|
|
394 | { |
|
|
395 | end_thread (); |
|
|
396 | cur--; |
|
|
397 | } |
|
|
398 | |
|
|
399 | while (started > nthreads) |
|
|
400 | { |
|
|
401 | poll_wait (); |
|
|
402 | poll_cb (); |
|
|
403 | } |
|
|
404 | } |
|
|
405 | |
531 | |
406 | int |
532 | int |
407 | max_outstanding(nreqs) |
533 | max_outstanding(nreqs) |
408 | int nreqs |
534 | int nreqs |
409 | PROTOTYPE: $ |
535 | PROTOTYPE: $ |
410 | CODE: |
536 | CODE: |
411 | RETVAL = max_outstanding; |
537 | RETVAL = max_outstanding; |
412 | max_outstanding = nreqs; |
538 | max_outstanding = nreqs; |
413 | |
539 | |
414 | void |
540 | void |
415 | aio_open(pathname,flags,mode,callback) |
541 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
416 | SV * pathname |
542 | SV * pathname |
417 | int flags |
543 | int flags |
418 | int mode |
544 | int mode |
419 | SV * callback |
545 | SV * callback |
420 | PROTOTYPE: $$$$ |
546 | PROTOTYPE: $$$;$ |
421 | CODE: |
547 | CODE: |
422 | { |
548 | { |
423 | aio_req req; |
549 | dREQ; |
424 | |
|
|
425 | Newz (0, req, 1, aio_cb); |
|
|
426 | |
|
|
427 | if (!req) |
|
|
428 | croak ("out of memory during aio_req allocation"); |
|
|
429 | |
550 | |
430 | req->type = REQ_OPEN; |
551 | req->type = REQ_OPEN; |
431 | req->data = newSVsv (pathname); |
552 | req->data = newSVsv (pathname); |
432 | req->dataptr = SvPV_nolen (req->data); |
553 | req->dataptr = SvPVbyte_nolen (req->data); |
433 | req->fd = flags; |
554 | req->fd = flags; |
434 | req->mode = mode; |
555 | req->mode = mode; |
435 | req->callback = SvREFCNT_inc (callback); |
|
|
436 | |
556 | |
437 | send_req (req); |
557 | send_req (req); |
438 | } |
558 | } |
439 | |
559 | |
440 | void |
560 | void |
441 | aio_close(fh,callback) |
561 | aio_close(fh,callback=&PL_sv_undef) |
442 | InputStream fh |
562 | SV * fh |
443 | SV * callback |
563 | SV * callback |
444 | PROTOTYPE: $$ |
564 | PROTOTYPE: $;$ |
445 | ALIAS: |
565 | ALIAS: |
446 | aio_close = REQ_CLOSE |
566 | aio_close = REQ_CLOSE |
447 | aio_fsync = REQ_FSYNC |
567 | aio_fsync = REQ_FSYNC |
448 | aio_fdatasync = REQ_FDATASYNC |
568 | aio_fdatasync = REQ_FDATASYNC |
449 | CODE: |
569 | CODE: |
450 | { |
570 | { |
|
|
571 | dREQ; |
|
|
572 | |
|
|
573 | req->type = ix; |
|
|
574 | req->fh = newSVsv (fh); |
|
|
575 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
576 | |
|
|
577 | send_req (req); |
|
|
578 | } |
|
|
579 | |
|
|
580 | void |
|
|
581 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
582 | SV * fh |
|
|
583 | UV offset |
|
|
584 | IV length |
|
|
585 | SV * data |
|
|
586 | IV dataoffset |
|
|
587 | SV * callback |
|
|
588 | ALIAS: |
|
|
589 | aio_read = REQ_READ |
|
|
590 | aio_write = REQ_WRITE |
|
|
591 | PROTOTYPE: $$$$$;$ |
|
|
592 | CODE: |
|
|
593 | { |
451 | aio_req req; |
594 | aio_req req; |
|
|
595 | STRLEN svlen; |
|
|
596 | char *svptr = SvPVbyte (data, svlen); |
452 | |
597 | |
453 | Newz (0, req, 1, aio_cb); |
598 | SvUPGRADE (data, SVt_PV); |
|
|
599 | SvPOK_on (data); |
454 | |
600 | |
455 | if (!req) |
601 | if (dataoffset < 0) |
456 | croak ("out of memory during aio_req allocation"); |
602 | dataoffset += svlen; |
457 | |
603 | |
458 | req->type = ix; |
604 | if (dataoffset < 0 || dataoffset > svlen) |
459 | req->fd = PerlIO_fileno (fh); |
605 | croak ("data offset outside of string"); |
460 | req->callback = SvREFCNT_inc (callback); |
|
|
461 | |
606 | |
462 | send_req (req); |
607 | if (ix == REQ_WRITE) |
463 | } |
608 | { |
464 | |
609 | /* write: check length and adjust. */ |
465 | void |
610 | if (length < 0 || length + dataoffset > svlen) |
466 | aio_read(fh,offset,length,data,dataoffset,callback) |
611 | length = svlen - dataoffset; |
467 | InputStream fh |
612 | } |
468 | UV offset |
613 | else |
469 | IV length |
614 | { |
470 | SV * data |
615 | /* read: grow scalar as necessary */ |
471 | IV dataoffset |
616 | svptr = SvGROW (data, length + dataoffset); |
472 | SV * callback |
617 | } |
473 | PROTOTYPE: $$$$$$ |
|
|
474 | CODE: |
|
|
475 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
476 | |
|
|
477 | void |
|
|
478 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
479 | OutputStream fh |
|
|
480 | UV offset |
|
|
481 | IV length |
|
|
482 | SV * data |
|
|
483 | IV dataoffset |
|
|
484 | SV * callback |
|
|
485 | PROTOTYPE: $$$$$$ |
|
|
486 | CODE: |
|
|
487 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
488 | |
|
|
489 | void |
|
|
490 | aio_readahead(fh,offset,length,callback) |
|
|
491 | InputStream fh |
|
|
492 | UV offset |
|
|
493 | IV length |
|
|
494 | SV * callback |
|
|
495 | PROTOTYPE: $$$$ |
|
|
496 | CODE: |
|
|
497 | { |
|
|
498 | aio_req req; |
|
|
499 | |
618 | |
500 | if (length < 0) |
619 | if (length < 0) |
501 | croak ("length must not be negative"); |
620 | croak ("length must not be negative"); |
502 | |
621 | |
503 | Newz (0, req, 1, aio_cb); |
622 | { |
|
|
623 | dREQ; |
504 | |
624 | |
505 | if (!req) |
625 | req->type = ix; |
506 | croak ("out of memory during aio_req allocation"); |
626 | req->fh = newSVsv (fh); |
|
|
627 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
628 | : IoOFP (sv_2io (fh))); |
|
|
629 | req->offset = offset; |
|
|
630 | req->length = length; |
|
|
631 | req->data = SvREFCNT_inc (data); |
|
|
632 | req->dataptr = (char *)svptr + dataoffset; |
|
|
633 | |
|
|
634 | send_req (req); |
|
|
635 | } |
|
|
636 | } |
|
|
637 | |
|
|
638 | void |
|
|
639 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
640 | SV * fh |
|
|
641 | UV offset |
|
|
642 | IV length |
|
|
643 | SV * callback |
|
|
644 | PROTOTYPE: $$$;$ |
|
|
645 | CODE: |
|
|
646 | { |
|
|
647 | dREQ; |
507 | |
648 | |
508 | req->type = REQ_READAHEAD; |
649 | req->type = REQ_READAHEAD; |
|
|
650 | req->fh = newSVsv (fh); |
509 | req->fd = PerlIO_fileno (fh); |
651 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
510 | req->offset = offset; |
652 | req->offset = offset; |
511 | req->length = length; |
653 | req->length = length; |
512 | req->callback = SvREFCNT_inc (callback); |
|
|
513 | |
654 | |
514 | send_req (req); |
655 | send_req (req); |
515 | } |
656 | } |
516 | |
657 | |
517 | void |
658 | void |
518 | aio_stat(fh_or_path,callback) |
659 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
519 | SV * fh_or_path |
660 | SV * fh_or_path |
520 | SV * callback |
661 | SV * callback |
521 | PROTOTYPE: $$ |
|
|
522 | ALIAS: |
662 | ALIAS: |
|
|
663 | aio_stat = REQ_STAT |
523 | aio_lstat = 1 |
664 | aio_lstat = REQ_LSTAT |
524 | CODE: |
665 | CODE: |
525 | { |
666 | { |
526 | aio_req req; |
667 | dREQ; |
527 | |
|
|
528 | Newz (0, req, 1, aio_cb); |
|
|
529 | |
|
|
530 | if (!req) |
|
|
531 | croak ("out of memory during aio_req allocation"); |
|
|
532 | |
668 | |
533 | New (0, req->statdata, 1, Stat_t); |
669 | New (0, req->statdata, 1, Stat_t); |
534 | |
|
|
535 | if (!req->statdata) |
670 | if (!req->statdata) |
|
|
671 | { |
|
|
672 | free_req (req); |
536 | croak ("out of memory during aio_req->statdata allocation"); |
673 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
674 | } |
537 | |
675 | |
538 | if (SvPOK (fh_or_path)) |
676 | if (SvPOK (fh_or_path)) |
539 | { |
677 | { |
540 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
678 | req->type = ix; |
541 | req->data = newSVsv (fh_or_path); |
679 | req->data = newSVsv (fh_or_path); |
542 | req->dataptr = SvPV_nolen (req->data); |
680 | req->dataptr = SvPVbyte_nolen (req->data); |
543 | } |
681 | } |
544 | else |
682 | else |
545 | { |
683 | { |
546 | req->type = REQ_FSTAT; |
684 | req->type = REQ_FSTAT; |
|
|
685 | req->fh = newSVsv (fh_or_path); |
547 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
686 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
548 | } |
687 | } |
549 | |
688 | |
550 | req->callback = SvREFCNT_inc (callback); |
|
|
551 | |
|
|
552 | send_req (req); |
689 | send_req (req); |
553 | } |
690 | } |
554 | |
691 | |
555 | void |
692 | void |
556 | aio_unlink(pathname,callback) |
693 | aio_unlink(pathname,callback=&PL_sv_undef) |
557 | SV * pathname |
694 | SV * pathname |
558 | SV * callback |
695 | SV * callback |
559 | PROTOTYPE: $$ |
696 | ALIAS: |
|
|
697 | aio_unlink = REQ_UNLINK |
|
|
698 | aio_rmdir = REQ_RMDIR |
560 | CODE: |
699 | CODE: |
561 | { |
700 | { |
562 | aio_req req; |
701 | dREQ; |
563 | |
702 | |
564 | Newz (0, req, 1, aio_cb); |
703 | req->type = ix; |
565 | |
|
|
566 | if (!req) |
|
|
567 | croak ("out of memory during aio_req allocation"); |
|
|
568 | |
|
|
569 | req->type = REQ_UNLINK; |
|
|
570 | req->data = newSVsv (pathname); |
704 | req->data = newSVsv (pathname); |
571 | req->dataptr = SvPV_nolen (req->data); |
705 | req->dataptr = SvPVbyte_nolen (req->data); |
572 | req->callback = SvREFCNT_inc (callback); |
|
|
573 | |
706 | |
574 | send_req (req); |
707 | send_req (req); |
575 | } |
708 | } |
|
|
709 | |
|
|
710 | void |
|
|
711 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
712 | SV * oldpath |
|
|
713 | SV * newpath |
|
|
714 | SV * callback |
|
|
715 | CODE: |
|
|
716 | { |
|
|
717 | dREQ; |
|
|
718 | |
|
|
719 | req->type = REQ_SYMLINK; |
|
|
720 | req->fh = newSVsv (oldpath); |
|
|
721 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
722 | req->data = newSVsv (newpath); |
|
|
723 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
724 | |
|
|
725 | send_req (req); |
|
|
726 | } |
|
|
727 | |
|
|
728 | void |
|
|
729 | flush() |
|
|
730 | PROTOTYPE: |
|
|
731 | CODE: |
|
|
732 | while (nreqs) |
|
|
733 | { |
|
|
734 | poll_wait (); |
|
|
735 | poll_cb (); |
|
|
736 | } |
|
|
737 | |
|
|
738 | void |
|
|
739 | poll() |
|
|
740 | PROTOTYPE: |
|
|
741 | CODE: |
|
|
742 | if (nreqs) |
|
|
743 | { |
|
|
744 | poll_wait (); |
|
|
745 | poll_cb (); |
|
|
746 | } |
576 | |
747 | |
577 | int |
748 | int |
578 | poll_fileno() |
749 | poll_fileno() |
579 | PROTOTYPE: |
750 | PROTOTYPE: |
580 | CODE: |
751 | CODE: |