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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC vs.
Revision 1.233 by root, Thu Jun 25 13:34:28 2015 UTC

1#define _REENTRANT 1 1#include "libeio/xthread.h"
2
2#include <errno.h> 3#include <errno.h>
3 4
4#include "EXTERN.h" 5#include "EXTERN.h"
5#include "perl.h" 6#include "perl.h"
6#include "XSUB.h" 7#include "XSUB.h"
7 8
8#include "autoconf/config.h" 9#include "schmorp.h"
9 10
10#include <pthread.h> 11#include <stddef.h>
11 12#include <stdlib.h>
13#include <errno.h>
12#include <sys/types.h> 14#include <sys/types.h>
13#include <sys/stat.h> 15#include <sys/stat.h>
14
15#include <unistd.h> 16#include <limits.h>
16#include <fcntl.h> 17#include <fcntl.h>
17#include <signal.h>
18#include <sched.h> 18#include <sched.h>
19 19
20#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# if __linux
22# include <sys/sendfile.h>
23# elif __freebsd
24# include <sys/socket.h>
25# include <sys/uio.h> 21# include <sys/mman.h>
26# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. on't complain if this fails for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
46#ifdef _WIN32
47
48 // perl overrides all those nice libc functions
49
50 #undef malloc
51 #undef free
52 #undef open
53 #undef read
54 #undef write
55 #undef send
56 #undef recv
57 #undef stat
58 #undef lstat
59 #undef fstat
60 #undef truncate
61 #undef ftruncate
62 #undef open
63 #undef link
64 #undef close
65 #undef unlink
66 #undef mkdir
67 #undef rmdir
68 #undef rename
69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
79
80 #define EIO_STRUCT_STAT struct _stati64
81 #define EIO_STRUCT_STATI64
82
83#else
84
27# include <sys/socket.h> 85 #include <sys/time.h>
28# elif __solaris /* not yet */
29# include <sys/sendfile.h> 86 #include <sys/select.h>
87 #include <unistd.h>
88 #include <utime.h>
89 #include <signal.h>
90
91 #define EIO_STRUCT_STAT Stat_t
92
93#endif
94
95/*****************************************************************************/
96
97#if __GNUC__ >= 3
98# define expect(expr,value) __builtin_expect ((expr),(value))
99#else
100# define expect(expr,value) (expr)
101#endif
102
103#define expect_false(expr) expect ((expr) != 0, 0)
104#define expect_true(expr) expect ((expr) != 0, 1)
105
106/*****************************************************************************/
107
108typedef SV SV8; /* byte-sv, used for argument-checking */
109typedef int aio_rfd; /* read file desriptor */
110typedef int aio_wfd; /* write file descriptor */
111
112static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
113
114#define EIO_REQ_MEMBERS \
115 SV *callback; \
116 SV *sv1, *sv2; \
117 SV *sv3, *sv4; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/config.h"
124#include "libeio/eio.h"
125
126static int req_invoke (eio_req *req);
127#define EIO_FINISH(req) req_invoke (req)
128static void req_destroy (eio_req *grp);
129#define EIO_DESTROY(req) req_destroy (req)
130
131#include "libeio/eio.c"
132
133#if !HAVE_POSIX_FADVISE
134# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#if !HAVE_POSIX_MADVISE
138# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
139#endif
140
141#ifndef MAP_ANONYMOUS
142# ifdef MAP_ANON
143# define MAP_ANONYMOUS MAP_ANON
30# else 144# else
31# error sendfile support requested but not available 145# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
32# endif 146# endif
33#endif 147#endif
34 148
35#if __ia64 149/* defines all sorts of constants to 0 unless they are already defined */
36# define STACKSIZE 65536 150#include "def0.h"
37#else
38# define STACKSIZE 4096
39#endif
40 151
41enum { 152#ifndef makedev
42 REQ_QUIT, 153# define makedev(maj,min) (((maj) << 8) | (min))
43 REQ_OPEN, REQ_CLOSE, 154#endif
44 REQ_READ, REQ_WRITE, REQ_READAHEAD, 155#ifndef major
45 REQ_SENDFILE, 156# define major(dev) ((dev) >> 8)
46 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 157#endif
47 REQ_FSYNC, REQ_FDATASYNC, 158#ifndef minor
48 REQ_UNLINK, REQ_RMDIR, 159# define minor(dev) ((dev) & 0xff)
49 REQ_SYMLINK, 160#endif
50};
51 161
52typedef struct aio_cb { 162#if PAGESIZE <= 0
53 struct aio_cb *volatile next; 163# define PAGESIZE sysconf (_SC_PAGESIZE)
164#endif
54 165
55 int type; 166/*****************************************************************************/
56
57 int fd, fd2;
58 off_t offset;
59 size_t length;
60 ssize_t result;
61 mode_t mode; /* open */
62 int errorno;
63 SV *data, *callback;
64 SV *fh, *fh2;
65 void *dataptr, *data2ptr;
66 STRLEN dataoffset;
67
68 Stat_t *statdata;
69} aio_cb;
70
71typedef aio_cb *aio_req;
72
73static int started, wanted;
74static volatile int nreqs;
75static int max_outstanding = 1<<30;
76static int respipe [2];
77
78static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
79static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
80static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81
82static volatile aio_req reqs, reqe; /* queue start, queue end */
83static volatile aio_req ress, rese; /* queue start, queue end */
84
85static void free_req (aio_req req)
86{
87 if (req->data)
88 SvREFCNT_dec (req->data);
89
90 if (req->fh)
91 SvREFCNT_dec (req->fh);
92
93 if (req->fh2)
94 SvREFCNT_dec (req->fh2);
95
96 if (req->statdata)
97 Safefree (req->statdata);
98
99 if (req->callback)
100 SvREFCNT_dec (req->callback);
101
102 Safefree (req);
103}
104 167
105static void 168static void
106poll_wait () 169fiemap (eio_req *req)
107{ 170{
108 if (nreqs && !ress) 171 req->result = -1;
109 {
110 fd_set rfd;
111 FD_ZERO(&rfd);
112 FD_SET(respipe [0], &rfd);
113 172
114 select (respipe [0] + 1, &rfd, 0, 0, 0); 173#if HAVE_FIEMAP
115 } 174 /* assume some c99 */
116} 175 struct fiemap *fiemap = 0;
176 size_t end_offset;
177 int count = req->int3;
117 178
118static int 179 req->flags |= EIO_FLAG_PTR1_FREE;
119poll_cb () 180
120{ 181 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
121 dSP; 182 /* increase in 3.5kb steps */
183 if (count < 0)
122 int count = 0; 184 count = 8;
123 int do_croak = 0; 185
124 aio_req req; 186 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
187 errno = ENOMEM;
188 if (!fiemap)
189 return;
190
191 req->ptr1 = fiemap;
192
193 fiemap->fm_start = req->offs;
194 fiemap->fm_length = req->size;
195 fiemap->fm_flags = req->int2;
196 fiemap->fm_extent_count = count;
197
198 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
199 return;
200
201 if (req->int3 >= 0 /* not autosizing */
202 || !fiemap->fm_mapped_extents /* no more extents */
203 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
204 goto done;
205
206 /* else we have to loop -
207 * it would be tempting (actually I tried that first) to just query the
208 * number of extents needed, but linux often feels like not returning all
209 * extents, without telling us it left any out. this complicates
210 * this quite a bit.
211 */
212
213 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125 214
126 for (;;) 215 for (;;)
127 { 216 {
128 pthread_mutex_lock (&reslock); 217 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
129 req = ress; 218 char scratch[3072];
219 struct fiemap *incmap = (struct fiemap *)scratch;
130 220
221 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
222 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
223 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
224 incmap->fm_flags = fiemap->fm_flags;
225 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
226
227 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
228 return;
229
230 if (!incmap->fm_mapped_extents)
231 goto done;
232
233 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
234 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
235 errno = ENOMEM;
131 if (req) 236 if (!fiemap)
237 return;
238
239 req->ptr1 = fiemap;
240
241 for (count = 0; count < incmap->fm_mapped_extents; ++count)
132 { 242 {
133 ress = req->next; 243 struct fiemap_extent *e = incmap->fm_extents + count;
134 244
135 if (!ress) 245 if (e->fe_logical + e->fe_length >= end_offset)
136 { 246 goto done;
137 /* read any signals sent by the worker threads */
138 char buf [32];
139 while (read (respipe [0], buf, 32) == 32)
140 ;
141 247
142 rese = 0; 248 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
143 } 249
250 if (e->fe_flags & FIEMAP_EXTENT_LAST)
251 goto done;
252
144 } 253 }
254 }
145 255
146 pthread_mutex_unlock (&reslock); 256done:
257 req->result = 0;
147 258
148 if (!req) 259#else
149 break; 260 errno = ENOSYS;
261#endif
262}
150 263
151 nreqs--; 264/*****************************************************************************/
152 265
153 if (req->type == REQ_QUIT) 266enum {
154 started--; 267 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
155 else 268};
269
270typedef eio_req *aio_req;
271typedef eio_req *aio_req_ornot;
272typedef eio_wd aio_wd;
273
274static SV *on_next_submit;
275static int next_pri = EIO_PRI_DEFAULT;
276static int max_outstanding;
277
278static s_epipe respipe;
279
280static void req_destroy (aio_req req);
281static void req_cancel (aio_req req);
282
283static void
284want_poll (void)
285{
286 /* write a dummy byte to the pipe so fh becomes ready */
287 s_epipe_signal (&respipe);
288}
289
290static void
291done_poll (void)
292{
293 /* read any signals sent by the worker threads */
294 s_epipe_drain (&respipe);
295}
296
297/* must be called at most once */
298static SV *
299req_sv (aio_req req, HV *stash)
300{
301 if (!req->self)
302 {
303 req->self = (SV *)newHV ();
304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305 }
306
307 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308}
309
310static SV *
311newSVaio_wd (aio_wd wd)
312{
313 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
314}
315
316static aio_req
317SvAIO_REQ (SV *sv)
318{
319 MAGIC *mg;
320
321 if (!SvROK (sv)
322 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
323 || (SvSTASH (SvRV (sv)) != aio_grp_stash
324 && SvSTASH (SvRV (sv)) != aio_req_stash
325 && !sv_derived_from (sv, "IO::AIO::REQ")))
326 croak ("object of class IO::AIO::REQ expected");
327
328 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
329
330 return mg ? (aio_req)mg->mg_ptr : 0;
331}
332
333static aio_wd
334SvAIO_WD (SV *sv)
335{
336 if (!SvROK (sv)
337 || SvTYPE (SvRV (sv)) != SVt_PVMG
338 || SvSTASH (SvRV (sv)) != aio_wd_stash)
339 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
340
341 return (aio_wd)(long)SvIVX (SvRV (sv));
342}
343
344static SV *
345newmortalFH (int fd, int flags)
346{
347 if (fd < 0)
348 return &PL_sv_undef;
349
350 GV *gv = (GV *)sv_newmortal ();
351 char sym[64];
352 int symlen;
353
354 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
355 gv_init (gv, aio_stash, sym, symlen, 0);
356
357 symlen = snprintf (
358 sym,
359 sizeof (sym),
360 "%s&=%d",
361 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
362 fd
363 );
364
365 return do_open (gv, sym, symlen, 0, 0, 0, 0)
366 ? (SV *)gv : &PL_sv_undef;
367}
368
369static void
370aio_grp_feed (aio_req grp)
371{
372 if (grp->sv2 && SvOK (grp->sv2))
373 {
374 dSP;
375
376 ENTER;
377 SAVETMPS;
378 PUSHMARK (SP);
379 XPUSHs (req_sv (grp, aio_grp_stash));
380 PUTBACK;
381 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
382 SPAGAIN;
383 FREETMPS;
384 LEAVE;
385 }
386}
387
388static void
389req_submit (eio_req *req)
390{
391 eio_submit (req);
392
393 if (expect_false (on_next_submit))
394 {
395 dSP;
396 SV *cb = sv_2mortal (on_next_submit);
397
398 on_next_submit = 0;
399
400 PUSHMARK (SP);
401 PUTBACK;
402 call_sv (cb, G_DISCARD | G_EVAL);
403 }
404}
405
406static int
407req_invoke (eio_req *req)
408{
409 if (req->flags & FLAG_SV2_RO_OFF)
410 SvREADONLY_off (req->sv2);
411
412 if (!EIO_CANCELLED (req) && req->callback)
413 {
414 dSP;
415 static SV *sv_result_cache; /* caches the result integer SV */
416 SV *sv_result;
417
418 ENTER;
419 SAVETMPS;
420 PUSHMARK (SP);
421 EXTEND (SP, 1);
422
423 /* do not recreate the result IV from scratch each time */
424 if (expect_true (sv_result_cache))
156 { 425 {
157 int errorno = errno; 426 sv_result = sv_result_cache; sv_result_cache = 0;
158 errno = req->errorno; 427 SvIV_set (sv_result, req->result);
159 428 SvIOK_only (sv_result);
160 if (req->type == REQ_READ)
161 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162
163 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
164 SvREADONLY_off (req->data);
165
166 if (req->statdata)
167 {
168 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169 PL_laststatval = req->result;
170 PL_statcache = *(req->statdata);
171 }
172
173 ENTER;
174 PUSHMARK (SP);
175 XPUSHs (sv_2mortal (newSViv (req->result)));
176
177 if (req->type == REQ_OPEN)
178 {
179 /* convert fd to fh */
180 SV *fh;
181
182 PUTBACK;
183 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
184 SPAGAIN;
185
186 fh = SvREFCNT_inc (POPs);
187
188 PUSHMARK (SP);
189 XPUSHs (sv_2mortal (fh));
190 }
191
192 if (SvOK (req->callback))
193 {
194 PUTBACK;
195 call_sv (req->callback, G_VOID | G_EVAL);
196 SPAGAIN;
197
198 if (SvTRUE (ERRSV))
199 {
200 free_req (req);
201 croak (0);
202 }
203 }
204
205 LEAVE;
206
207 errno = errorno;
208 count++;
209 }
210
211 free_req (req);
212 }
213
214 return count;
215}
216
217static void *aio_proc(void *arg);
218
219static void
220start_thread (void)
221{
222 sigset_t fullsigset, oldsigset;
223 pthread_t tid;
224 pthread_attr_t attr;
225
226 pthread_attr_init (&attr);
227 pthread_attr_setstacksize (&attr, STACKSIZE);
228 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
229
230 sigfillset (&fullsigset);
231 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
232
233 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
234 started++;
235
236 sigprocmask (SIG_SETMASK, &oldsigset, 0);
237}
238
239static void
240send_req (aio_req req)
241{
242 while (started < wanted && nreqs >= started)
243 start_thread ();
244
245 nreqs++;
246
247 pthread_mutex_lock (&reqlock);
248
249 req->next = 0;
250
251 if (reqe)
252 {
253 reqe->next = req;
254 reqe = req;
255 }
256 else
257 reqe = reqs = req;
258
259 pthread_cond_signal (&reqwait);
260 pthread_mutex_unlock (&reqlock);
261
262 if (nreqs > max_outstanding)
263 for (;;)
264 {
265 poll_cb ();
266
267 if (nreqs <= max_outstanding)
268 break;
269
270 poll_wait ();
271 }
272}
273
274static void
275end_thread (void)
276{
277 aio_req req;
278 Newz (0, req, 1, aio_cb);
279 req->type = REQ_QUIT;
280
281 send_req (req);
282}
283
284static void min_parallel (int nthreads)
285{
286 if (wanted < nthreads)
287 wanted = nthreads;
288}
289
290static void max_parallel (int nthreads)
291{
292 int cur = started;
293
294 if (wanted > nthreads)
295 wanted = nthreads;
296
297 while (cur > wanted)
298 {
299 end_thread ();
300 cur--;
301 }
302
303 while (started > wanted)
304 {
305 poll_wait ();
306 poll_cb ();
307 }
308}
309
310static void create_pipe ()
311{
312 if (pipe (respipe))
313 croak ("unable to initialize result pipe");
314
315 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316 croak ("cannot set result pipe to nonblocking mode");
317
318 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319 croak ("cannot set result pipe to nonblocking mode");
320}
321
322static void atfork_prepare (void)
323{
324 pthread_mutex_lock (&reqlock);
325 pthread_mutex_lock (&reslock);
326}
327
328static void atfork_parent (void)
329{
330 pthread_mutex_unlock (&reslock);
331 pthread_mutex_unlock (&reqlock);
332}
333
334static void atfork_child (void)
335{
336 aio_req prv;
337
338 started = 0;
339
340 while (reqs)
341 {
342 prv = reqs;
343 reqs = prv->next;
344 free_req (prv);
345 }
346
347 reqs = reqe = 0;
348
349 while (ress)
350 {
351 prv = ress;
352 ress = prv->next;
353 free_req (prv);
354 }
355
356 ress = rese = 0;
357
358 close (respipe [0]);
359 close (respipe [1]);
360 create_pipe ();
361
362 atfork_parent ();
363}
364
365/* currently noops */
366#define LOCK_FD(fd) do { } while (0)
367#define UNLOCK_FD(fd) do { } while (0)
368
369/*****************************************************************************/
370/* work around various missing functions */
371
372#if !HAVE_PREADWRITE
373# define pread aio_pread
374# define pwrite aio_pwrite
375
376/*
377 * make our pread/pwrite safe against themselves, but not against
378 * normal read/write by using a mutex. slows down execution a lot,
379 * but that's your problem, not mine.
380 */
381static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
382
383static ssize_t
384pread (int fd, void *buf, size_t count, off_t offset)
385{
386 ssize_t res;
387 off_t ooffset;
388
389 LOCK_FD (fd);
390 pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
391 ooffset = lseek (fd, 0, SEEK_CUR);
392 lseek (fd, offset, SEEK_SET);
393 res = read (fd, buf, count);
394 lseek (fd, ooffset, SEEK_SET);
395 pthread_mutex_unlock (&iolock);
396 UNLOCK_FD (d);
397
398 return res;
399}
400
401static ssize_t
402pwrite (int fd, void *buf, size_t count, off_t offset)
403{
404 ssize_t res;
405 off_t ooffset;
406
407 LOCK_FD (fd);
408 pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
409 ooffset = lseek (fd, 0, SEEK_CUR);
410 lseek (fd, offset, SEEK_SET);
411 res = write (fd, buf, count);
412 lseek (fd, offset, SEEK_SET);
413 pthread_mutex_unlock (&iolock);
414 UNLOCK_FD (d);
415
416 return res;
417}
418#endif
419
420#if !HAVE_FDATASYNC
421# define fdatasync fsync
422#endif
423
424#if !HAVE_READAHEAD
425# define readahead aio_readahead
426
427static char readahead_buf[4096];
428
429static ssize_t
430readahead (int fd, off_t offset, size_t count)
431{
432 while (count > 0)
433 {
434 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
435
436 pread (fd, readahead_buf, len, offset);
437 offset += len;
438 count -= len;
439 }
440
441 errno = 0;
442}
443#endif
444
445/* sendfile always needs emulation */
446static ssize_t
447sendfile_ (int ofd, int ifd, off_t offset, size_t count)
448{
449 ssize_t res;
450
451 if (!count)
452 return 0;
453
454 LOCK_FD (ofd);
455
456#if HAVE_SENDFILE
457# if __linux
458 res = sendfile (ofd, ifd, &offset, count);
459
460# elif __freebsd
461 /*
462 * Of course, the freebsd sendfile is a dire hack with no thoughts
463 * wasted on making it similar to other I/O functions.
464 */
465 {
466 off_t sbytes;
467 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
468
469 if (res < 0 && sbytes)
470 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
471 res = sbytes;
472 }
473
474# elif __hpux
475 res = sendfile (ofd, ifd, offset, count, 0, 0);
476
477# elif __solaris
478 {
479 struct sendfilevec vec;
480 size_t sbytes;
481
482 vec.sfv_fd = ifd;
483 vec.sfv_flag = 0;
484 vec.sfv_off = offset;
485 vec.sfv_len = count;
486
487 res = sendfilev (ofd, &vec, 1, &sbytes);
488
489 if (res < 0 && sbytes)
490 res = sbytes;
491 }
492
493# else
494 res = -1;
495 errno = ENOSYS;
496# endif
497#endif
498
499 if (res < 0
500 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
501#if __solaris
502 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
503#endif
504 )
505 )
506 {
507 /* emulate sendfile. this is a major pain in the ass */
508 char *buf = malloc (4096);
509 res = 0;
510
511 for (;;)
512 {
513 ssize_t cnt;
514
515 cnt = pread (ifd, buf, 4096, offset);
516
517 if (cnt <= 0)
518 {
519 if (cnt && !res) res = -1;
520 break;
521 }
522
523 cnt = write (ofd, buf, cnt);
524
525 if (cnt <= 0)
526 {
527 if (cnt && !res) res = -1;
528 break;
529 }
530
531 offset += cnt;
532 res += cnt;
533 }
534
535 {
536 int errorno = errno;
537 free (buf);
538 errno = errorno;
539 }
540 }
541
542 UNLOCK_FD (ofd);
543
544 return res;
545}
546
547/*****************************************************************************/
548
549static void *
550aio_proc (void *thr_arg)
551{
552 aio_req req;
553 int type;
554
555 do
556 {
557 pthread_mutex_lock (&reqlock);
558
559 for (;;)
560 {
561 req = reqs;
562
563 if (reqs)
564 {
565 reqs = reqs->next;
566 if (!reqs) reqe = 0;
567 }
568
569 if (req)
570 break;
571
572 pthread_cond_wait (&reqwait, &reqlock);
573 }
574
575 pthread_mutex_unlock (&reqlock);
576
577 errno = 0; /* strictly unnecessary */
578
579 type = req->type;
580
581 switch (type)
582 {
583 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
584 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
585
586 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
587 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
588
589 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
590 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
591 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
592
593 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
594 case REQ_CLOSE: req->result = close (req->fd); break;
595 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
596 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
597 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
598
599 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
600 case REQ_FSYNC: req->result = fsync (req->fd); break;
601
602 case REQ_QUIT:
603 break;
604
605 default:
606 req->result = ENOSYS;
607 break;
608 }
609
610 req->errorno = errno;
611
612 pthread_mutex_lock (&reslock);
613
614 req->next = 0;
615
616 if (rese)
617 {
618 rese->next = req;
619 rese = req;
620 } 429 }
621 else 430 else
622 { 431 {
623 rese = ress = req; 432 sv_result = newSViv (req->result);
624 433 SvREADONLY_on (sv_result);
625 /* write a dummy byte to the pipe so fh becomes ready */
626 write (respipe [1], &respipe, 1);
627 } 434 }
628 435
629 pthread_mutex_unlock (&reslock); 436 switch (req->type)
437 {
438 case EIO_WD_OPEN:
439 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
440 break;
441
442 case EIO_READDIR:
443 {
444 SV *rv = &PL_sv_undef;
445
446 if (req->result >= 0)
447 {
448 int i;
449 char *names = (char *)req->ptr2;
450 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
451 AV *av = newAV ();
452
453 av_extend (av, req->result - 1);
454
455 for (i = 0; i < req->result; ++i)
456 {
457 if (req->int1 & EIO_READDIR_DENTS)
458 {
459 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
460
461 if (req->int1 & EIO_READDIR_CUSTOM2)
462 {
463 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
464 AV *avent = newAV ();
465
466 av_extend (avent, 2);
467
468 if (!sv_type [ent->type])
469 {
470 sv_type [ent->type] = newSViv (ent->type);
471 SvREADONLY_on (sv_type [ent->type]);
472 }
473
474 av_store (avent, 0, namesv);
475 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
476 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
477
478 av_store (av, i, newRV_noinc ((SV *)avent));
479 }
480 else
481 av_store (av, i, namesv);
482
483 ++ent;
484 }
485 else
486 {
487 SV *name = newSVpv (names, 0);
488 av_store (av, i, name);
489 names += SvCUR (name) + 1;
490 }
491 }
492
493 rv = sv_2mortal (newRV_noinc ((SV *)av));
494 }
495
496 PUSHs (rv);
497
498 if (req->int1 & EIO_READDIR_CUSTOM1)
499 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500 }
501 break;
502
503 case EIO_OPEN:
504 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
505 break;
506
507 case EIO_STATVFS:
508 case EIO_FSTATVFS:
509 {
510 SV *rv = &PL_sv_undef;
511
512#ifndef _WIN32
513 if (req->result >= 0)
514 {
515 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
516 HV *hv = newHV ();
517 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
518 * chooses to make it a struct.
519 */
520 unsigned long fsid = 0;
521 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
522
523 rv = sv_2mortal (newRV_noinc ((SV *)hv));
524
525 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
526 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
527 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
528 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
529 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
530 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
531 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
532 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
533 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
534 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
535 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
536 }
537#endif
538
539 PUSHs (rv);
540 }
541
542 break;
543
544 case EIO_GROUP:
545 req->int1 = 2; /* mark group as finished */
546
547 if (req->sv1)
548 {
549 int i;
550 AV *av = (AV *)req->sv1;
551
552 EXTEND (SP, AvFILL (av) + 1);
553 for (i = 0; i <= AvFILL (av); ++i)
554 PUSHs (*av_fetch (av, i, 0));
555 }
556 break;
557
558 case EIO_NOP:
559 case EIO_BUSY:
560 break;
561
562 case EIO_READLINK:
563 case EIO_REALPATH:
564 if (req->result > 0)
565 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
566 break;
567
568 case EIO_STAT:
569 case EIO_LSTAT:
570 case EIO_FSTAT:
571 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
572
573 if (!(PL_laststatval = req->result))
574 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
575 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
576
577 PUSHs (sv_result);
578 break;
579
580 case EIO_SEEK:
581 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
582 break;
583
584 case EIO_READ:
585 {
586 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
587 *SvEND (req->sv2) = 0;
588 SvPOK_only (req->sv2);
589 SvSETMAGIC (req->sv2);
590 PUSHs (sv_result);
591 }
592 break;
593
594 case EIO_CUSTOM:
595 if (req->feed == fiemap)
596 {
597#if HAVE_FIEMAP
598 if (!req->result)
599 {
600 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
601
602 if (fiemap->fm_extent_count)
603 {
604 AV *av = newAV ();
605 int i;
606
607 while (fiemap->fm_mapped_extents)
608 {
609 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
610 AV *ext_av = newAV ();
611
612 av_store (ext_av, 3, newSVuv (extent->fe_flags));
613 av_store (ext_av, 2, newSVval64 (extent->fe_length));
614 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
615 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
616
617 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
618 }
619
620 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
621 }
622 else
623 {
624 SvIV_set (sv_result, fiemap->fm_mapped_extents);
625 PUSHs (sv_result);
626 }
627 }
628#endif
629 }
630 else
631 PUSHs (sv_result);
632 break;
633
634 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
635 if (req->result > 0)
636 SvIV_set (sv_result, 0);
637 /* FALLTHROUGH */
638
639 default:
640 PUSHs (sv_result);
641 break;
642 }
643
644 errno = req->errorno;
645
646 PUTBACK;
647 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
648 SPAGAIN;
649
650 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
651 SvREFCNT_dec (sv_result);
652 else
653 sv_result_cache = sv_result;
654
655 FREETMPS;
656 LEAVE;
657
658 PUTBACK;
630 } 659 }
631 while (type != REQ_QUIT); 660
661 return !!SvTRUE (ERRSV);
662}
663
664static void
665req_destroy (aio_req req)
666{
667 if (req->self)
668 {
669 sv_unmagic (req->self, PERL_MAGIC_ext);
670 SvREFCNT_dec (req->self);
671 }
672
673 SvREFCNT_dec (req->sv1);
674 SvREFCNT_dec (req->sv2);
675 SvREFCNT_dec (req->sv3);
676 SvREFCNT_dec (req->sv4);
677 SvREFCNT_dec (req->callback);
678
679 free (req);
680}
681
682static void
683req_cancel_subs (aio_req grp)
684{
685 if (grp->type != EIO_GROUP)
686 return;
687
688 SvREFCNT_dec (grp->sv2);
689 grp->sv2 = 0;
690
691 eio_grp_cancel (grp);
692}
693
694static void ecb_cold
695create_respipe (void)
696{
697 if (s_epipe_renew (&respipe))
698 croak ("IO::AIO: unable to initialize result pipe");
699}
700
701static void
702poll_wait (void)
703{
704 while (eio_nreqs ())
705 {
706 int size;
707
708 X_LOCK (reslock);
709 size = res_queue.size;
710 X_UNLOCK (reslock);
711
712 if (size)
713 return;
714
715 etp_maybe_start_thread ();
716
717 s_epipe_wait (&respipe);
718 }
719}
720
721static int
722poll_cb (void)
723{
724 for (;;)
725 {
726 int res = eio_poll ();
727
728 if (res > 0)
729 croak (0);
730
731 if (!max_outstanding || max_outstanding > eio_nreqs ())
732 return res;
733
734 poll_wait ();
735 }
736}
737
738static void ecb_cold
739reinit (void)
740{
741 create_respipe ();
742
743 if (eio_init (want_poll, done_poll) < 0)
744 croak ("IO::AIO: unable to initialise eio library");
745}
746
747/*****************************************************************************/
748
749#if !_POSIX_MAPPED_FILES
750# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
751# define munmap(addr,length) EIO_ENOSYS ()
752#endif
753
754#if !_POSIX_MEMORY_PROTECTION
755# define mprotect(addr,len,prot) EIO_ENOSYS ()
756# define PROT_NONE 0
757# define PROT_WRITE 0
758# define MAP_PRIVATE 0
759# define MAP_SHARED 0
760# define MAP_FIXED 0
761#endif
762
763#define MMAP_MAGIC PERL_MAGIC_ext
764
765static int ecb_cold
766mmap_free (pTHX_ SV *sv, MAGIC *mg)
767{
768 int old_errno = errno;
769 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
770 errno = old_errno;
771
772 mg->mg_obj = 0; /* just in case */
773
774 SvREADONLY_off (sv);
775
776 if (SvPVX (sv) != mg->mg_ptr)
777 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
778
779 SvCUR_set (sv, 0);
780 SvPVX (sv) = 0;
781 SvOK_off (sv);
632 782
633 return 0; 783 return 0;
634} 784}
635 785
786static MGVTBL mmap_vtbl = {
787 0, 0, 0, 0, mmap_free
788};
789
790/*****************************************************************************/
791
792static SV *
793get_cb (SV *cb_sv)
794{
795 SvGETMAGIC (cb_sv);
796 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
797}
798
799static aio_req ecb_noinline
800dreq (SV *callback)
801{
802 SV *cb_cv;
803 aio_req req;
804 int req_pri = next_pri;
805 next_pri = EIO_PRI_DEFAULT;
806
807 cb_cv = get_cb (callback);
808
809 req = calloc (sizeof (*req), 1);
810 if (!req)
811 croak ("out of memory during eio_req allocation");
812
813 req->callback = SvREFCNT_inc (cb_cv);
814 req->pri = req_pri;
815
816 return req;
817}
818
636#define dREQ \ 819#define dREQ \
637 aio_req req; \ 820 aio_req req = dreq (callback); \
821
822#define REQ_SEND \
823 PUTBACK; \
824 req_submit (req); \
825 SPAGAIN; \
638 \ 826 \
639 if (SvOK (callback) && !SvROK (callback)) \ 827 if (GIMME_V != G_VOID) \
640 croak ("clalback must be undef or of reference type"); \ 828 XPUSHs (req_sv (req, aio_req_stash));
641 \ 829
642 Newz (0, req, 1, aio_cb); \ 830ecb_inline void
643 if (!req) \ 831req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
644 croak ("out of memory during aio_req allocation"); \ 832{
645 \ 833 if (expect_false (SvROK (path)))
646 req->callback = newSVsv (callback); 834 {
647 835 SV *rv = SvRV (path);
836 SV *wdob;
837
838 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
839 {
840 path = AvARRAY (rv)[1];
841 wdob = AvARRAY (rv)[0];
842
843 if (SvOK (wdob))
844 {
845 *wd = SvAIO_WD (wdob);
846 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
847 }
848 else
849 *wd = EIO_INVALID_WD;
850 }
851 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
852 {
853 *wd = (aio_wd)(long)SvIVX (rv);
854 *wdsv = SvREFCNT_inc_NN (rv);
855 *ptr = ".";
856 return; /* path set to "." */
857 }
858 else
859 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
860 }
861
862 *pathsv = newSVsv (path);
863 *ptr = SvPVbyte_nolen (*pathsv);
864}
865
866static void ecb_noinline
867req_set_path1 (aio_req req, SV *path)
868{
869 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
870}
871
872static void ecb_noinline
873req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
874{
875 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
876
877 switch (SvTYPE (rv))
878 {
879 case SVt_PVIO:
880 case SVt_PVLV:
881 case SVt_PVGV:
882 req->type = type_fh;
883 req->sv1 = newSVsv (fh_or_path);
884 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
885 break;
886
887 default:
888 req->type = type_path;
889 req_set_path1 (req, fh_or_path);
890 break;
891 }
892}
893
894XS(boot_IO__AIO) ecb_cold;
895
648MODULE = IO::AIO PACKAGE = IO::AIO 896MODULE = IO::AIO PACKAGE = IO::AIO
649 897
650PROTOTYPES: ENABLE 898PROTOTYPES: ENABLE
651 899
652BOOT: 900BOOT:
653{ 901{
654 create_pipe (); 902 static const struct {
655 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 903 const char *name;
656} 904 IV iv;
905 } *civ, const_iv[] = {
906# define const_niv(name, value) { # name, (IV) value },
907# define const_iv(name) { # name, (IV) name },
908# define const_eio(name) { # name, (IV) EIO_ ## name },
657 909
910 /* you have to re-run ./gendef0 after adding/Removing any constants here */
911
912 const_iv (ENOSYS)
913 const_iv (EXDEV)
914 const_iv (EBADR)
915
916 const_iv (O_RDONLY)
917 const_iv (O_WRONLY)
918 const_iv (O_RDWR)
919 const_iv (O_CREAT)
920 const_iv (O_TRUNC)
921 const_iv (O_EXCL)
922 const_iv (O_APPEND)
923
924 const_iv (O_ASYNC)
925 const_iv (O_DIRECT)
926 const_iv (O_NOATIME)
927
928 const_iv (O_CLOEXEC)
929 const_iv (O_NOCTTY)
930 const_iv (O_NOFOLLOW)
931 const_iv (O_NONBLOCK)
932 const_iv (O_EXEC)
933 const_iv (O_SEARCH)
934 const_iv (O_DIRECTORY)
935 const_iv (O_DSYNC)
936 const_iv (O_RSYNC)
937 const_iv (O_SYNC)
938 const_iv (O_TTY_INIT)
939
940 const_iv (S_IFIFO)
941 const_iv (S_IFCHR)
942 const_iv (S_IFBLK)
943 const_iv (S_IFLNK)
944 const_iv (S_IFREG)
945 const_iv (S_IFDIR)
946 const_iv (S_IFWHT)
947 const_iv (S_IFSOCK)
948 const_iv (S_IFMT)
949
950 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
951 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
952 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
953 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
954 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
955 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
956
957 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
958 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
959 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
960 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
961 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
962
963 const_iv (ST_RDONLY)
964 const_iv (ST_NOSUID)
965 const_iv (ST_NODEV)
966 const_iv (ST_NOEXEC)
967 const_iv (ST_SYNCHRONOUS)
968 const_iv (ST_MANDLOCK)
969 const_iv (ST_WRITE)
970 const_iv (ST_APPEND)
971 const_iv (ST_IMMUTABLE)
972 const_iv (ST_NOATIME)
973 const_iv (ST_NODIRATIME)
974 const_iv (ST_RELATIME)
975
976 const_iv (PROT_NONE)
977 const_iv (PROT_EXEC)
978 const_iv (PROT_READ)
979 const_iv (PROT_WRITE)
980
981 /*const_iv (MAP_FIXED)*/
982 const_iv (MAP_PRIVATE)
983 const_iv (MAP_SHARED)
984 const_iv (MAP_ANONYMOUS)
985
986 /* linuxish */
987 const_iv (MAP_HUGETLB)
988 const_iv (MAP_LOCKED)
989 const_iv (MAP_NORESERVE)
990 const_iv (MAP_POPULATE)
991 const_iv (MAP_NONBLOCK)
992
993 const_iv (FIEMAP_FLAG_SYNC)
994 const_iv (FIEMAP_FLAG_XATTR)
995 const_iv (FIEMAP_FLAGS_COMPAT)
996 const_iv (FIEMAP_EXTENT_LAST)
997 const_iv (FIEMAP_EXTENT_UNKNOWN)
998 const_iv (FIEMAP_EXTENT_DELALLOC)
999 const_iv (FIEMAP_EXTENT_ENCODED)
1000 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1001 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1002 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1003 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1004 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1005 const_iv (FIEMAP_EXTENT_MERGED)
1006 const_iv (FIEMAP_EXTENT_SHARED)
1007
1008 const_iv (SPLICE_F_MOVE)
1009 const_iv (SPLICE_F_NONBLOCK)
1010 const_iv (SPLICE_F_MORE)
1011 const_iv (SPLICE_F_GIFT)
1012
1013 const_iv (SEEK_DATA)
1014 const_iv (SEEK_HOLE)
1015
1016 /* libeio constants */
1017 const_eio (SEEK_SET)
1018 const_eio (SEEK_CUR)
1019 const_eio (SEEK_END)
1020
1021 const_eio (MCL_FUTURE)
1022 const_eio (MCL_CURRENT)
1023
1024 const_eio (MS_ASYNC)
1025 const_eio (MS_INVALIDATE)
1026 const_eio (MS_SYNC)
1027
1028 const_eio (MT_MODIFY)
1029
1030 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1031 const_eio (SYNC_FILE_RANGE_WRITE)
1032 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1033
1034 const_eio (FALLOC_FL_KEEP_SIZE)
1035 const_eio (FALLOC_FL_PUNCH_HOLE)
1036 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1037 const_eio (FALLOC_FL_ZERO_RANGE)
1038
1039 const_eio (READDIR_DENTS)
1040 const_eio (READDIR_DIRS_FIRST)
1041 const_eio (READDIR_STAT_ORDER)
1042 const_eio (READDIR_FOUND_UNKNOWN)
1043
1044 const_eio (DT_UNKNOWN)
1045 const_eio (DT_FIFO)
1046 const_eio (DT_CHR)
1047 const_eio (DT_DIR)
1048 const_eio (DT_BLK)
1049 const_eio (DT_REG)
1050 const_eio (DT_LNK)
1051 const_eio (DT_SOCK)
1052 const_eio (DT_WHT)
1053 };
1054
1055 aio_stash = gv_stashpv ("IO::AIO" , 1);
1056 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1057 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1058 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1059
1060 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1061 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1062
1063 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1064
1065 reinit ();
1066}
1067
658void 1068void
659min_parallel(nthreads) 1069reinit ()
660 int nthreads 1070 PROTOTYPE:
1071
1072void
1073max_poll_reqs (unsigned int nreqs)
661 PROTOTYPE: $ 1074 PROTOTYPE: $
1075 CODE:
1076 eio_set_max_poll_reqs (nreqs);
662 1077
663void 1078void
664max_parallel(nthreads) 1079max_poll_time (double nseconds)
665 int nthreads
666 PROTOTYPE: $ 1080 PROTOTYPE: $
667
668int
669max_outstanding(nreqs)
670 int nreqs
671 PROTOTYPE: $
672 CODE: 1081 CODE:
673 RETVAL = max_outstanding; 1082 eio_set_max_poll_time (nseconds);
1083
1084void
1085min_parallel (unsigned int nthreads)
1086 PROTOTYPE: $
1087 CODE:
1088 eio_set_min_parallel (nthreads);
1089
1090void
1091max_parallel (unsigned int nthreads)
1092 PROTOTYPE: $
1093 CODE:
1094 eio_set_max_parallel (nthreads);
1095
1096void
1097max_idle (unsigned int nthreads)
1098 PROTOTYPE: $
1099 CODE:
1100 eio_set_max_idle (nthreads);
1101
1102void
1103idle_timeout (unsigned int seconds)
1104 PROTOTYPE: $
1105 CODE:
1106 eio_set_idle_timeout (seconds);
1107
1108void
1109max_outstanding (unsigned int maxreqs)
1110 PROTOTYPE: $
1111 CODE:
674 max_outstanding = nreqs; 1112 max_outstanding = maxreqs;
675 1113
676void 1114void
677aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1115aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
678 SV * pathname
679 int flags
680 int mode
681 SV * callback
682 PROTOTYPE: $$$;$
683 CODE: 1116 PPCODE:
684{ 1117{
685 dREQ; 1118 dREQ;
686 1119
1120 req->type = EIO_WD_OPEN;
1121 req_set_path1 (req, pathname);
1122
1123 REQ_SEND;
1124}
1125
1126void
1127aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1128 PPCODE:
1129{
1130 dREQ;
1131
687 req->type = REQ_OPEN; 1132 req->type = EIO_OPEN;
688 req->data = newSVsv (pathname); 1133 req_set_path1 (req, pathname);
689 req->dataptr = SvPVbyte_nolen (req->data);
690 req->fd = flags; 1134 req->int1 = flags;
691 req->mode = mode; 1135 req->int2 = mode;
692 1136
693 send_req (req); 1137 REQ_SEND;
694} 1138}
695 1139
696void 1140void
697aio_close(fh,callback=&PL_sv_undef) 1141aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
698 SV * fh
699 SV * callback
700 PROTOTYPE: $;$
701 ALIAS: 1142 ALIAS:
702 aio_close = REQ_CLOSE
703 aio_fsync = REQ_FSYNC 1143 aio_fsync = EIO_FSYNC
704 aio_fdatasync = REQ_FDATASYNC 1144 aio_fdatasync = EIO_FDATASYNC
1145 aio_syncfs = EIO_SYNCFS
705 CODE: 1146 PPCODE:
706{ 1147{
1148 int fd = s_fileno_croak (fh, 0);
707 dREQ; 1149 dREQ;
708 1150
709 req->type = ix; 1151 req->type = ix;
710 req->fh = newSVsv (fh); 1152 req->sv1 = newSVsv (fh);
711 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1153 req->int1 = fd;
712 1154
713 send_req (req); 1155 REQ_SEND;
714} 1156}
715 1157
716void 1158void
1159aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1160 PPCODE:
1161{
1162 int fd = s_fileno_croak (fh, 0);
1163 dREQ;
1164
1165 req->type = EIO_SYNC_FILE_RANGE;
1166 req->sv1 = newSVsv (fh);
1167 req->int1 = fd;
1168 req->offs = offset;
1169 req->size = nbytes;
1170 req->int2 = flags;
1171
1172 REQ_SEND;
1173}
1174
1175void
1176aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1177 PPCODE:
1178{
1179 int fd = s_fileno_croak (fh, 0);
1180 dREQ;
1181
1182 req->type = EIO_FALLOCATE;
1183 req->sv1 = newSVsv (fh);
1184 req->int1 = fd;
1185 req->int2 = mode;
1186 req->offs = offset;
1187 req->size = len;
1188
1189 REQ_SEND;
1190}
1191
1192void
1193aio_close (SV *fh, SV *callback = &PL_sv_undef)
1194 PPCODE:
1195{
1196 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1197 int fd = s_fileno_croak (fh, 0);
1198 dREQ;
1199
1200 if (expect_false (close_fd < 0))
1201 {
1202 int pipefd [2];
1203
1204 if (
1205#ifdef _WIN32
1206 _pipe (pipefd, 1, _O_BINARY) < 0
1207#else
1208 pipe (pipefd) < 0
1209 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1210#endif
1211 || close (pipefd [1]) < 0
1212 )
1213 abort (); /*D*/
1214
1215 close_fd = pipefd [0];
1216 }
1217
1218 req->type = EIO_DUP2;
1219 req->int1 = close_fd;
1220 req->sv2 = newSVsv (fh);
1221 req->int2 = fd;
1222
1223 REQ_SEND;
1224}
1225
1226void
1227aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1228 PPCODE:
1229{
1230 int fd = s_fileno_croak (fh, 0);
1231 dREQ;
1232
1233 req->type = EIO_SEEK;
1234 req->sv1 = newSVsv (fh);
1235 req->int1 = fd;
1236 req->offs = SvVAL64 (offset);
1237 req->int2 = whence;
1238
1239 REQ_SEND;
1240}
1241
1242void
717aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1243aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
718 SV * fh
719 UV offset
720 UV length
721 SV * data
722 UV dataoffset
723 SV * callback
724 ALIAS: 1244 ALIAS:
725 aio_read = REQ_READ 1245 aio_read = EIO_READ
726 aio_write = REQ_WRITE 1246 aio_write = EIO_WRITE
727 PROTOTYPE: $$$$$;$
728 CODE: 1247 PPCODE:
729{ 1248{
730 aio_req req;
731 STRLEN svlen; 1249 STRLEN svlen;
1250 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
732 char *svptr = SvPVbyte (data, svlen); 1251 char *svptr = SvPVbyte (data, svlen);
733 1252 UV len = SvUV (length);
734 SvUPGRADE (data, SVt_PV);
735 SvPOK_on (data);
736 1253
737 if (dataoffset < 0) 1254 if (dataoffset < 0)
738 dataoffset += svlen; 1255 dataoffset += svlen;
739 1256
740 if (dataoffset < 0 || dataoffset > svlen) 1257 if (dataoffset < 0 || dataoffset > svlen)
741 croak ("data offset outside of string"); 1258 croak ("dataoffset outside of data scalar");
742 1259
743 if (ix == REQ_WRITE) 1260 if (ix == EIO_WRITE)
744 { 1261 {
745 /* write: check length and adjust. */ 1262 /* write: check length and adjust. */
746 if (length < 0 || length + dataoffset > svlen) 1263 if (!SvOK (length) || len + dataoffset > svlen)
747 length = svlen - dataoffset; 1264 len = svlen - dataoffset;
748 } 1265 }
749 else 1266 else
750 { 1267 {
751 /* read: grow scalar as necessary */ 1268 /* read: check type and grow scalar as necessary */
1269 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
752 svptr = SvGROW (data, length + dataoffset); 1270 svptr = sv_grow (data, len + dataoffset + 1);
1271 else if (SvCUR (data) < len + dataoffset)
1272 croak ("length + dataoffset outside of scalar, and cannot grow");
753 } 1273 }
754
755 if (length < 0)
756 croak ("length must not be negative");
757 1274
758 { 1275 {
759 dREQ; 1276 dREQ;
760 1277
761 req->type = ix; 1278 req->type = ix;
762 req->fh = newSVsv (fh); 1279 req->sv1 = newSVsv (fh);
763 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1280 req->int1 = fd;
764 : IoOFP (sv_2io (fh))); 1281 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
765 req->offset = offset; 1282 req->size = len;
766 req->length = length;
767 req->data = SvREFCNT_inc (data); 1283 req->sv2 = SvREFCNT_inc (data);
768 req->dataptr = (char *)svptr + dataoffset; 1284 req->ptr2 = (char *)svptr + dataoffset;
1285 req->stroffset = dataoffset;
769 1286
770 if (!SvREADONLY (data)) 1287 if (!SvREADONLY (data))
771 { 1288 {
772 SvREADONLY_on (data); 1289 SvREADONLY_on (data);
773 req->data2ptr = (void *)data; 1290 req->flags |= FLAG_SV2_RO_OFF;
774 } 1291 }
775 1292
776 send_req (req); 1293 REQ_SEND;
777 } 1294 }
778} 1295}
779 1296
780void 1297void
781aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1298aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
782 SV * out_fh 1299 ALIAS:
783 SV * in_fh 1300 aio_readlink = EIO_READLINK
784 UV in_offset 1301 aio_realpath = EIO_REALPATH
785 UV length
786 SV * callback
787 PROTOTYPE: $$$$;$
788 CODE: 1302 PPCODE:
789{ 1303{
1304 dREQ;
1305
1306 req->type = ix;
1307 req_set_path1 (req, pathname);
1308
1309 REQ_SEND;
1310}
1311
1312void
1313aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1314 PPCODE:
1315{
1316 int ifd = s_fileno_croak (in_fh , 0);
1317 int ofd = s_fileno_croak (out_fh, 1);
790 dREQ; 1318 dREQ;
791 1319
792 req->type = REQ_SENDFILE; 1320 req->type = EIO_SENDFILE;
793 req->fh = newSVsv (out_fh); 1321 req->sv1 = newSVsv (out_fh);
794 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1322 req->int1 = ofd;
795 req->fh2 = newSVsv (in_fh); 1323 req->sv2 = newSVsv (in_fh);
796 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1324 req->int2 = ifd;
797 req->offset = in_offset; 1325 req->offs = in_offset;
798 req->length = length; 1326 req->size = length;
799 1327
800 send_req (req); 1328 REQ_SEND;
801} 1329}
802 1330
803void 1331void
804aio_readahead(fh,offset,length,callback=&PL_sv_undef) 1332aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
805 SV * fh
806 UV offset
807 IV length
808 SV * callback
809 PROTOTYPE: $$$;$
810 CODE: 1333 PPCODE:
811{ 1334{
1335 int fd = s_fileno_croak (fh, 0);
812 dREQ; 1336 dREQ;
813 1337
814 req->type = REQ_READAHEAD; 1338 req->type = EIO_READAHEAD;
815 req->fh = newSVsv (fh); 1339 req->sv1 = newSVsv (fh);
816 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1340 req->int1 = fd;
817 req->offset = offset; 1341 req->offs = offset;
818 req->length = length; 1342 req->size = length;
819 1343
820 send_req (req); 1344 REQ_SEND;
821} 1345}
822 1346
823void 1347void
824aio_stat(fh_or_path,callback=&PL_sv_undef) 1348aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
825 SV * fh_or_path
826 SV * callback
827 ALIAS: 1349 ALIAS:
828 aio_stat = REQ_STAT 1350 aio_stat = EIO_STAT
829 aio_lstat = REQ_LSTAT 1351 aio_lstat = EIO_LSTAT
1352 aio_statvfs = EIO_STATVFS
1353 PPCODE:
1354{
1355 dREQ;
1356
1357 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1358
1359 REQ_SEND;
1360}
1361
1362UV
1363major (UV dev)
1364 ALIAS:
1365 minor = 1
830 CODE: 1366 CODE:
1367 RETVAL = ix ? major (dev) : minor (dev);
1368 OUTPUT:
1369 RETVAL
1370
1371UV
1372makedev (UV maj, UV min)
1373 CODE:
1374 RETVAL = makedev (maj, min);
1375 OUTPUT:
1376 RETVAL
1377
1378void
1379aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1380 PPCODE:
831{ 1381{
832 dREQ; 1382 dREQ;
833 1383
834 New (0, req->statdata, 1, Stat_t); 1384 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
835 if (!req->statdata) 1385 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
836 { 1386 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
837 free_req (req);
838 croak ("out of memory during aio_req->statdata allocation");
839 }
840 1387
841 if (SvPOK (fh_or_path)) 1388 REQ_SEND;
842 {
843 req->type = ix;
844 req->data = newSVsv (fh_or_path);
845 req->dataptr = SvPVbyte_nolen (req->data);
846 }
847 else
848 {
849 req->type = REQ_FSTAT;
850 req->fh = newSVsv (fh_or_path);
851 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
852 }
853
854 send_req (req);
855} 1389}
856 1390
857void 1391void
1392aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1393 PPCODE:
1394{
1395 dREQ;
1396
1397 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1398 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1399
1400 REQ_SEND;
1401}
1402
1403void
1404aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1405 PPCODE:
1406{
1407 dREQ;
1408
1409 req->int2 = mode;
1410 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1411
1412 REQ_SEND;
1413}
1414
1415void
1416aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1417 PPCODE:
1418{
1419 dREQ;
1420
1421 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1422 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1423 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1424
1425 REQ_SEND;
1426}
1427
1428void
1429aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1430 PPCODE:
1431{
1432 dREQ;
1433
1434 req->type = EIO_READDIR;
1435 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1436
1437 if (flags & EIO_READDIR_DENTS)
1438 req->int1 |= EIO_READDIR_CUSTOM2;
1439
1440 req_set_path1 (req, pathname);
1441
1442 REQ_SEND;
1443}
1444
1445void
1446aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1447 PPCODE:
1448{
1449 dREQ;
1450
1451 req->type = EIO_MKDIR;
1452 req->int2 = mode;
1453 req_set_path1 (req, pathname);
1454
1455 REQ_SEND;
1456}
1457
1458void
858aio_unlink(pathname,callback=&PL_sv_undef) 1459aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
859 SV * pathname
860 SV * callback
861 ALIAS: 1460 ALIAS:
862 aio_unlink = REQ_UNLINK 1461 aio_unlink = EIO_UNLINK
863 aio_rmdir = REQ_RMDIR 1462 aio_rmdir = EIO_RMDIR
1463 aio_readdir = EIO_READDIR
864 CODE: 1464 PPCODE:
865{ 1465{
866 dREQ; 1466 dREQ;
867 1467
868 req->type = ix; 1468 req->type = ix;
869 req->data = newSVsv (pathname); 1469 req_set_path1 (req, pathname);
870 req->dataptr = SvPVbyte_nolen (req->data);
871
872 send_req (req);
873}
874 1470
1471 REQ_SEND;
1472}
1473
875void 1474void
876aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1475aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
877 SV * oldpath 1476 ALIAS:
878 SV * newpath 1477 aio_link = EIO_LINK
879 SV * callback 1478 aio_symlink = EIO_SYMLINK
1479 aio_rename = EIO_RENAME
880 CODE: 1480 PPCODE:
881{ 1481{
1482 eio_wd wd2 = 0;
882 dREQ; 1483 dREQ;
883 1484
884 req->type = REQ_SYMLINK; 1485 req->type = ix;
885 req->fh = newSVsv (oldpath); 1486 req_set_path1 (req, oldpath);
886 req->data2ptr = SvPVbyte_nolen (req->fh); 1487 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
887 req->data = newSVsv (newpath); 1488 req->int3 = (long)wd2;
888 req->dataptr = SvPVbyte_nolen (req->data);
889 1489
890 send_req (req); 1490 REQ_SEND;
891} 1491}
892 1492
893void 1493void
894flush() 1494aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
895 PROTOTYPE: 1495 PPCODE:
1496{
1497 dREQ;
1498
1499 req->type = EIO_MKNOD;
1500 req->int2 = (mode_t)mode;
1501 req->offs = dev;
1502 req_set_path1 (req, pathname);
1503
1504 REQ_SEND;
1505}
1506
1507void
1508aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1509 ALIAS:
1510 aio_mtouch = EIO_MTOUCH
1511 aio_msync = EIO_MSYNC
1512 PPCODE:
1513{
1514 STRLEN svlen;
1515 char *svptr = SvPVbyte (data, svlen);
1516 UV len = SvUV (length);
1517
1518 if (offset < 0)
1519 offset += svlen;
1520
1521 if (offset < 0 || offset > svlen)
1522 croak ("offset outside of scalar");
1523
1524 if (!SvOK (length) || len + offset > svlen)
1525 len = svlen - offset;
1526
1527 {
1528 dREQ;
1529
1530 req->type = ix;
1531 req->sv2 = SvREFCNT_inc (data);
1532 req->ptr2 = (char *)svptr + offset;
1533 req->size = len;
1534 req->int1 = flags;
1535
1536 REQ_SEND;
1537 }
1538}
1539
1540void
1541aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1542 PPCODE:
1543{
1544 STRLEN svlen;
1545 char *svptr = SvPVbyte (data, svlen);
1546 UV len = SvUV (length);
1547
1548 if (offset < 0)
1549 offset += svlen;
1550
1551 if (offset < 0 || offset > svlen)
1552 croak ("offset outside of scalar");
1553
1554 if (!SvOK (length) || len + offset > svlen)
1555 len = svlen - offset;
1556
1557 {
1558 dREQ;
1559
1560 req->type = EIO_MLOCK;
1561 req->sv2 = SvREFCNT_inc (data);
1562 req->ptr2 = (char *)svptr + offset;
1563 req->size = len;
1564
1565 REQ_SEND;
1566 }
1567}
1568
1569void
1570aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1571 PPCODE:
1572{
1573 dREQ;
1574
1575 req->type = EIO_MLOCKALL;
1576 req->int1 = flags;
1577
1578 REQ_SEND;
1579}
1580
1581void
1582aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1583 PPCODE:
1584{
1585 int fd = s_fileno_croak (fh, 0);
1586 dREQ;
1587
1588 req->type = EIO_CUSTOM;
1589 req->sv1 = newSVsv (fh);
1590 req->int1 = fd;
1591
1592 req->feed = fiemap;
1593#if HAVE_FIEMAP
1594 /* keep our fingers crossed that the next two types are 64 bit */
1595 req->offs = start;
1596 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1597 req->int2 = flags;
1598 req->int3 = SvOK (count) ? SvIV (count) : -1;
1599#endif
1600
1601 REQ_SEND;
1602}
1603
1604void
1605aio_busy (double delay, SV *callback = &PL_sv_undef)
1606 PPCODE:
1607{
1608 dREQ;
1609
1610 req->type = EIO_BUSY;
1611 req->nv1 = delay < 0. ? 0. : delay;
1612
1613 REQ_SEND;
1614}
1615
1616void
1617aio_group (SV *callback = &PL_sv_undef)
1618 PPCODE:
1619{
1620 dREQ;
1621
1622 req->type = EIO_GROUP;
1623
1624 PUTBACK;
1625 req_submit (req);
1626 SPAGAIN;
1627
1628 XPUSHs (req_sv (req, aio_grp_stash));
1629}
1630
1631void
1632aio_nop (SV *callback = &PL_sv_undef)
1633 ALIAS:
1634 aio_nop = EIO_NOP
1635 aio_sync = EIO_SYNC
1636 PPCODE:
1637{
1638 dREQ;
1639
1640 req->type = ix;
1641
1642 REQ_SEND;
1643}
1644
1645int
1646aioreq_pri (int pri = NO_INIT)
896 CODE: 1647 CODE:
1648 RETVAL = next_pri;
1649 if (items > 0)
1650 {
1651 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1652 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1653 next_pri = pri;
1654 }
1655 OUTPUT:
1656 RETVAL
1657
1658void
1659aioreq_nice (int nice = 0)
1660 CODE:
1661 nice = next_pri - nice;
1662 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1663 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1664 next_pri = nice;
1665
1666void
1667flush ()
1668 CODE:
897 while (nreqs) 1669 while (eio_nreqs ())
898 { 1670 {
899 poll_wait (); 1671 poll_wait ();
900 poll_cb (); 1672 poll_cb ();
901 } 1673 }
902 1674
903void 1675int
904poll() 1676poll ()
905 PROTOTYPE:
906 CODE: 1677 CODE:
907 if (nreqs)
908 {
909 poll_wait (); 1678 poll_wait ();
910 poll_cb (); 1679 RETVAL = poll_cb ();
911 }
912
913int
914poll_fileno()
915 PROTOTYPE:
916 CODE:
917 RETVAL = respipe [0];
918 OUTPUT: 1680 OUTPUT:
919 RETVAL 1681 RETVAL
920 1682
921int 1683int
1684poll_fileno ()
1685 CODE:
1686 RETVAL = s_epipe_fd (&respipe);
1687 OUTPUT:
1688 RETVAL
1689
1690int
922poll_cb(...) 1691poll_cb (...)
923 PROTOTYPE: 1692 PROTOTYPE:
924 CODE: 1693 CODE:
925 RETVAL = poll_cb (); 1694 RETVAL = poll_cb ();
926 OUTPUT: 1695 OUTPUT:
927 RETVAL 1696 RETVAL
928 1697
929void 1698void
930poll_wait() 1699poll_wait ()
931 PROTOTYPE:
932 CODE: 1700 CODE:
933 if (nreqs)
934 poll_wait (); 1701 poll_wait ();
935 1702
936int 1703int
937nreqs() 1704nreqs ()
938 PROTOTYPE:
939 CODE: 1705 CODE:
940 RETVAL = nreqs; 1706 RETVAL = eio_nreqs ();
941 OUTPUT: 1707 OUTPUT:
942 RETVAL 1708 RETVAL
943 1709
1710int
1711nready ()
1712 CODE:
1713 RETVAL = eio_nready ();
1714 OUTPUT:
1715 RETVAL
1716
1717int
1718npending ()
1719 CODE:
1720 RETVAL = eio_npending ();
1721 OUTPUT:
1722 RETVAL
1723
1724int
1725nthreads ()
1726 CODE:
1727 RETVAL = eio_nthreads ();
1728 OUTPUT:
1729 RETVAL
1730
1731int
1732fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1733 CODE:
1734 RETVAL = posix_fadvise (fh, offset, length, advice);
1735 OUTPUT:
1736 RETVAL
1737
1738IV
1739sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1740 CODE:
1741 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1742 OUTPUT:
1743 RETVAL
1744
1745void
1746mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1747 PPCODE:
1748 sv_unmagic (scalar, MMAP_MAGIC);
1749{
1750 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1751 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1752 if (addr == (void *)-1)
1753 XSRETURN_NO;
1754
1755 sv_force_normal (scalar);
1756
1757 /* we store the length in mg_obj, as namlen is I32 :/ */
1758 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1759 ->mg_obj = (SV *)length;
1760
1761 SvUPGRADE (scalar, SVt_PV); /* nop... */
1762
1763 if (!(prot & PROT_WRITE))
1764 SvREADONLY_on (scalar);
1765
1766 if (SvLEN (scalar))
1767 Safefree (SvPVX (scalar));
1768
1769 SvPVX (scalar) = (char *)addr;
1770 SvCUR_set (scalar, length);
1771 SvLEN_set (scalar, 0);
1772 SvPOK_only (scalar);
1773
1774 XSRETURN_YES;
1775}
1776
1777void
1778munmap (SV *scalar)
1779 CODE:
1780 sv_unmagic (scalar, MMAP_MAGIC);
1781
1782int
1783madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1784 ALIAS:
1785 mprotect = 1
1786 CODE:
1787{
1788 STRLEN svlen;
1789 void *addr = SvPVbyte (scalar, svlen);
1790 STRLEN len = SvUV (length);
1791
1792 if (offset < 0)
1793 offset += svlen;
1794
1795 if (offset < 0 || offset > svlen)
1796 croak ("offset outside of scalar");
1797
1798 if (!SvOK (length) || len + offset > svlen)
1799 len = svlen - offset;
1800
1801 addr = (void *)(((intptr_t)addr) + offset);
1802 eio_page_align (&addr, &len);
1803
1804 switch (ix)
1805 {
1806 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1807 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1808 }
1809}
1810 OUTPUT:
1811 RETVAL
1812
1813int
1814munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1815 CODE:
1816{
1817 STRLEN svlen;
1818 void *addr = SvPVbyte (scalar, svlen);
1819 size_t len = SvUV (length);
1820
1821 if (offset < 0)
1822 offset += svlen;
1823
1824 if (offset < 0 || offset > svlen)
1825 croak ("offset outside of scalar");
1826
1827 if (!SvOK (length) || len + offset > svlen)
1828 len = svlen - offset;
1829
1830 addr = (void *)(((intptr_t)addr) + offset);
1831 eio_page_align (&addr, &len);
1832#if _POSIX_MEMLOCK_RANGE
1833 RETVAL = munlock (addr, len);
1834#else
1835 RETVAL = EIO_ENOSYS ();
1836#endif
1837}
1838 OUTPUT:
1839 RETVAL
1840
1841int
1842munlockall ()
1843 CODE:
1844#if _POSIX_MEMLOCK
1845 munlockall ();
1846#else
1847 RETVAL = EIO_ENOSYS ();
1848#endif
1849 OUTPUT:
1850 RETVAL
1851
1852int
1853splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1854 CODE:
1855{
1856#if HAVE_LINUX_SPLICE
1857 loff_t off_in_, off_out_;
1858 RETVAL = splice (
1859 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1860 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1861 length, flags
1862 );
1863#else
1864 RETVAL = EIO_ENOSYS ();
1865#endif
1866}
1867 OUTPUT:
1868 RETVAL
1869
1870int
1871tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1872 CODE:
1873#if HAVE_LINUX_SPLICE
1874 RETVAL = tee (rfh, wfh, length, flags);
1875#else
1876 RETVAL = EIO_ENOSYS ();
1877#endif
1878 OUTPUT:
1879 RETVAL
1880
1881int
1882pipesize (aio_rfd rfh, int new_size = -1)
1883 PROTOTYPE: $;$
1884 CODE:
1885#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1886 if (new_size >= 0)
1887 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1888 else
1889 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1890#else
1891 errno = ENOSYS;
1892 RETVAL = -1;
1893#endif
1894 OUTPUT:
1895 RETVAL
1896
1897void
1898pipe2 (int flags = 0)
1899 PROTOTYPE: ;$
1900 PPCODE:
1901{
1902 int fd[2];
1903 int res;
1904
1905 if (flags)
1906#if HAVE_PIPE2
1907 res = pipe2 (fd, flags);
1908#else
1909 res = (errno = ENOSYS, -1);
1910#endif
1911 else
1912 res = pipe (fd);
1913
1914 if (!res)
1915 {
1916 EXTEND (SP, 2);
1917 PUSHs (newmortalFH (fd[0], O_RDONLY));
1918 PUSHs (newmortalFH (fd[1], O_WRONLY));
1919 }
1920}
1921
1922void _on_next_submit (SV *cb)
1923 CODE:
1924 SvREFCNT_dec (on_next_submit);
1925 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1926
1927PROTOTYPES: DISABLE
1928
1929MODULE = IO::AIO PACKAGE = IO::AIO::WD
1930
1931BOOT:
1932{
1933 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1934 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1935}
1936
1937void
1938DESTROY (SV *self)
1939 CODE:
1940{
1941 aio_wd wd = SvAIO_WD (self);
1942#if HAVE_AT
1943 {
1944 SV *callback = &PL_sv_undef;
1945 dREQ; /* clobbers next_pri :/ */
1946 next_pri = req->pri; /* restore next_pri */
1947 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1948 req->type = EIO_WD_CLOSE;
1949 req->wd = wd;
1950 REQ_SEND;
1951 }
1952#else
1953 eio_wd_close_sync (wd);
1954#endif
1955}
1956
1957MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1958
1959void
1960cancel (aio_req_ornot req)
1961 CODE:
1962 eio_cancel (req);
1963
1964void
1965cb (aio_req_ornot req, SV *callback = NO_INIT)
1966 PPCODE:
1967{
1968 if (GIMME_V != G_VOID)
1969 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1970
1971 if (items > 1)
1972 {
1973 SV *cb_cv = get_cb (callback);
1974
1975 SvREFCNT_dec (req->callback);
1976 req->callback = SvREFCNT_inc (cb_cv);
1977 }
1978}
1979
1980MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1981
1982void
1983add (aio_req grp, ...)
1984 PPCODE:
1985{
1986 int i;
1987
1988 if (grp->int1 == 2)
1989 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1990
1991 for (i = 1; i < items; ++i )
1992 {
1993 aio_req req;
1994
1995 if (GIMME_V != G_VOID)
1996 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1997
1998 req = SvAIO_REQ (ST (i));
1999
2000 if (req)
2001 eio_grp_add (grp, req);
2002 }
2003}
2004
2005void
2006cancel_subs (aio_req_ornot req)
2007 CODE:
2008 req_cancel_subs (req);
2009
2010void
2011result (aio_req grp, ...)
2012 CODE:
2013{
2014 int i;
2015 AV *av;
2016
2017 grp->errorno = errno;
2018
2019 av = newAV ();
2020 av_extend (av, items - 1);
2021
2022 for (i = 1; i < items; ++i )
2023 av_push (av, newSVsv (ST (i)));
2024
2025 SvREFCNT_dec (grp->sv1);
2026 grp->sv1 = (SV *)av;
2027}
2028
2029void
2030errno (aio_req grp, int errorno = errno)
2031 CODE:
2032 grp->errorno = errorno;
2033
2034void
2035limit (aio_req grp, int limit)
2036 CODE:
2037 eio_grp_limit (grp, limit);
2038
2039void
2040feed (aio_req grp, SV *callback = &PL_sv_undef)
2041 CODE:
2042{
2043 SvREFCNT_dec (grp->sv2);
2044 grp->sv2 = newSVsv (callback);
2045 grp->feed = aio_grp_feed;
2046
2047 if (grp->int2 <= 0)
2048 grp->int2 = 2;
2049
2050 eio_grp_limit (grp, grp->int2);
2051}
2052

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