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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.274 by root, Sun Mar 10 12:16:48 2019 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"
8#include "perliol.h"
7 9
8#include "autoconf/config.h" 10#if !defined mg_findext
9 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
10#include <pthread.h> 12#endif
11 13
12#include <stddef.h> 14#include <stddef.h>
15#include <stdlib.h>
16#include <errno.h>
13#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
14#include <sys/stat.h> 19#include <sys/stat.h>
15#include <limits.h> 20#include <limits.h>
16#include <unistd.h>
17#include <fcntl.h> 21#include <fcntl.h>
18#include <signal.h>
19#include <sched.h> 22#include <sched.h>
20 23
21#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
22# if __linux 25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
23# include <sys/sendfile.h> 88 #include <sys/select.h>
24# elif __freebsd 89 #include <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
25# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
119# include <sys/mman.h>
120#endif
121
122#if HAVE_SYS_UIO_H
26# include <sys/uio.h> 123# include <sys/uio.h>
27# elif __hpux 124#endif
28# include <sys/socket.h> 125
29# elif __solaris /* not yet */ 126#if HAVE_ST_XTIMENSEC
127# define ATIMENSEC PL_statcache.st_atimensec
128# define MTIMENSEC PL_statcache.st_mtimensec
129# define CTIMENSEC PL_statcache.st_ctimensec
130#elif HAVE_ST_XTIMESPEC
131# define ATIMENSEC PL_statcache.st_atim.tv_nsec
132# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
133# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
134#else
135# define ATIMENSEC 0
136# define MTIMENSEC 0
137# define CTIMENSEC 0
138#endif
139
140#if HAVE_ST_BIRTHTIMENSEC
141# define BTIMESEC PL_statcache.st_birthtime
142# define BTIMENSEC PL_statcache.st_birthtimensec
143#elif HAVE_ST_BIRTHTIMESPEC
144# define BTIMESEC PL_statcache.st_birthtim.tv_sec
145# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
146#else
147# define BTIMESEC 0
148# define BTIMENSEC 0
149#endif
150
151#if HAVE_ST_GEN
152# define ST_GEN PL_statcache.st_gen
153#else
154# define ST_GEN 0
155#endif
156
157#include "schmorp.h"
158
159#if HAVE_EVENTFD
30# include <sys/sendfile.h> 160# include <sys/eventfd.h>
161#endif
162
163#if HAVE_TIMERFD
164# include <sys/timerfd.h>
165#endif
166
167#if HAVE_RLIMITS
168 #include <sys/time.h>
169 #include <sys/resource.h>
170#endif
171
172typedef SV SV8; /* byte-sv, used for argument-checking */
173typedef int aio_rfd; /* read file desriptor */
174typedef int aio_wfd; /* write file descriptor */
175
176static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
177
178#define EIO_REQ_MEMBERS \
179 SV *callback; \
180 SV *sv1, *sv2; \
181 SV *sv3, *sv4; \
182 STRLEN stroffset; \
183 SV *self;
184
185#define EIO_NO_WRAPPERS 1
186
187#include "libeio/eio.h"
188
189static int req_invoke (eio_req *req);
190#define EIO_FINISH(req) req_invoke (req)
191static void req_destroy (eio_req *grp);
192#define EIO_DESTROY(req) req_destroy (req)
193
194#include "libeio/eio.c"
195
196#if !HAVE_POSIX_FADVISE
197# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#if !HAVE_POSIX_MADVISE
201# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
202#endif
203
204#ifndef MAP_ANONYMOUS
205# ifdef MAP_ANON
206# define MAP_ANONYMOUS MAP_ANON
31# else 207# else
32# error sendfile support requested but not available 208# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
33# endif 209# endif
34#endif 210#endif
35 211
36/* used for struct dirent, AIX doesn't provide it */ 212#ifndef makedev
37#ifndef NAME_MAX 213# define makedev(maj,min) (((maj) << 8) | (min))
38# define NAME_MAX 4096
39#endif 214#endif
40 215#ifndef major
41#if __ia64 216# define major(dev) ((dev) >> 8)
42# define STACKSIZE 65536
43#else
44# define STACKSIZE 8192
45#endif 217#endif
218#ifndef minor
219# define minor(dev) ((dev) & 0xff)
220#endif
46 221
47enum { 222/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
48 REQ_QUIT, 223#ifdef __sun
49 REQ_OPEN, REQ_CLOSE, 224# undef PAGESIZE
50 REQ_READ, REQ_WRITE, REQ_READAHEAD, 225#endif
51 REQ_SENDFILE, 226
52 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 227#if PAGESIZE <= 0
53 REQ_FSYNC, REQ_FDATASYNC, 228# define PAGESIZE sysconf (_SC_PAGESIZE)
54 REQ_UNLINK, REQ_RMDIR, REQ_RENAME, 229#endif
55 REQ_READDIR, 230
56 REQ_LINK, REQ_SYMLINK, 231/*****************************************************************************/
232
233#if !_POSIX_MAPPED_FILES
234# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
235# define munmap(addr,length) EIO_ENOSYS ()
236#endif
237
238#if !_POSIX_MEMORY_PROTECTION
239# define mprotect(addr,len,prot) EIO_ENOSYS ()
240#endif
241
242#if !MREMAP_MAYMOVE
243# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
244#endif
245
246#define FOREIGN_MAGIC PERL_MAGIC_ext
247
248static int ecb_cold
249mmap_free (pTHX_ SV *sv, MAGIC *mg)
250{
251 int old_errno = errno;
252 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
253 errno = old_errno;
254
255 mg->mg_obj = 0; /* just in case */
256
257 SvREADONLY_off (sv);
258
259 if (SvPVX (sv) != mg->mg_ptr)
260 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
261
262 SvCUR_set (sv, 0);
263 SvPVX (sv) = 0;
264 SvOK_off (sv);
265
266 return 0;
267}
268
269static MGVTBL mmap_vtbl = {
270 0, 0, 0, 0, mmap_free
57}; 271};
58 272
59typedef struct aio_cb { 273static int ecb_cold
60 struct aio_cb *volatile next; 274sysfree_free (pTHX_ SV *sv, MAGIC *mg)
61
62 int type;
63
64 /* should receive a cleanup, with unions */
65 int fd, fd2;
66 off_t offset;
67 size_t length;
68 ssize_t result;
69 mode_t mode; /* open */
70 int errorno;
71 SV *data, *callback;
72 SV *fh, *fh2;
73 void *dataptr, *data2ptr;
74 STRLEN dataoffset;
75
76 Stat_t *statdata;
77} aio_cb;
78
79typedef aio_cb *aio_req;
80
81static int started, wanted;
82static volatile int nreqs;
83static int max_outstanding = 1<<30;
84static int respipe [2];
85
86static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
87static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
88static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89
90static volatile aio_req reqs, reqe; /* queue start, queue end */
91static volatile aio_req ress, rese; /* queue start, queue end */
92
93static void free_req (aio_req req)
94{ 275{
95 if (req->data) 276 free (mg->mg_ptr);
96 SvREFCNT_dec (req->data); 277 mg->mg_obj = 0; /* just in case */
97 278
98 if (req->fh) 279 SvREADONLY_off (sv);
99 SvREFCNT_dec (req->fh);
100 280
101 if (req->fh2) 281 if (SvPVX (sv) != mg->mg_ptr)
102 SvREFCNT_dec (req->fh2); 282 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
103 283
104 if (req->statdata) 284 SvCUR_set (sv, 0);
105 Safefree (req->statdata); 285 SvPVX (sv) = 0;
286 SvOK_off (sv);
106 287
107 if (req->callback) 288 return 0;
108 SvREFCNT_dec (req->callback);
109
110 if (req->type == REQ_READDIR && req->result >= 0)
111 free (req->data2ptr);
112
113 Safefree (req);
114} 289}
115 290
291static MGVTBL sysfree_vtbl = {
292 0, 0, 0, 0, sysfree_free
293};
294
295/*****************************************************************************/
296
297/* helper: set scalar to foreign ptr with custom free */
116static void 298static void
117poll_wait () 299sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
118{ 300{
119 if (nreqs && !ress) 301 sv_force_normal (sv);
120 {
121 fd_set rfd;
122 FD_ZERO(&rfd);
123 FD_SET(respipe [0], &rfd);
124 302
125 select (respipe [0] + 1, &rfd, 0, 0, 0); 303 /* we store the length in mg_obj, as namlen is I32 :/ */
126 } 304 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
127} 305 ->mg_obj = (SV *)length;
128 306
307 SvUPGRADE (sv, SVt_PV); /* nop... */
308
309 if (SvLEN (sv))
310 Safefree (SvPVX (sv));
311
312 SvPVX (sv) = (char *)addr;
313 SvCUR_set (sv, length);
314 SvLEN_set (sv, 0);
315 SvPOK_only (sv);
316}
317
129static int 318static void
130poll_cb () 319sv_clear_foreign (SV *sv)
131{ 320{
132 dSP; 321 /* todo: iterate over magic and only free ours, but of course */
322 /* the perl5porters will call that (correct) behaviour buggy */
323 sv_unmagic (sv, FOREIGN_MAGIC);
324}
325
326/*****************************************************************************/
327
328/* defines all sorts of constants to 0 unless they are already defined */
329/* also provides const_iv_ and const_niv_ macros for them */
330#include "def0.h"
331
332/*****************************************************************************/
333
334static void
335fiemap (eio_req *req)
336{
337 req->result = -1;
338
339#if HAVE_FIEMAP
340 /* assume some c99 */
341 struct fiemap *fiemap = 0;
342 size_t end_offset;
343 int count = req->int3;
344
345 req->flags |= EIO_FLAG_PTR1_FREE;
346
347 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
348 /* increase in 3.5kb steps */
349 if (count < 0)
133 int count = 0; 350 count = 8;
134 int do_croak = 0; 351
135 aio_req req; 352 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
353 errno = ENOMEM;
354 if (!fiemap)
355 return;
356
357 req->ptr1 = fiemap;
358
359 fiemap->fm_start = req->offs;
360 fiemap->fm_length = req->size;
361 fiemap->fm_flags = req->int2;
362 fiemap->fm_extent_count = count;
363
364 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
365 return;
366
367 if (req->int3 >= 0 /* not autosizing */
368 || !fiemap->fm_mapped_extents /* no more extents */
369 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
370 goto done;
371
372 /* else we have to loop -
373 * it would be tempting (actually I tried that first) to just query the
374 * number of extents needed, but linux often feels like not returning all
375 * extents, without telling us it left any out. this complicates
376 * this quite a bit.
377 */
378
379 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
136 380
137 for (;;) 381 for (;;)
138 { 382 {
139 pthread_mutex_lock (&reslock); 383 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
140 req = ress; 384 char scratch[3072];
385 struct fiemap *incmap = (struct fiemap *)scratch;
141 386
387 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
388 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
389 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
390 incmap->fm_flags = fiemap->fm_flags;
391 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
392
393 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
394 return;
395
396 if (!incmap->fm_mapped_extents)
397 goto done;
398
399 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
400 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
401 errno = ENOMEM;
142 if (req) 402 if (!fiemap)
403 return;
404
405 req->ptr1 = fiemap;
406
407 for (count = 0; count < incmap->fm_mapped_extents; ++count)
143 { 408 {
144 ress = req->next; 409 struct fiemap_extent *e = incmap->fm_extents + count;
145 410
146 if (!ress) 411 if (e->fe_logical + e->fe_length >= end_offset)
147 { 412 goto done;
148 /* read any signals sent by the worker threads */
149 char buf [32];
150 while (read (respipe [0], buf, 32) == 32)
151 ;
152 413
153 rese = 0; 414 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
154 }
155 }
156 415
157 pthread_mutex_unlock (&reslock); 416 if (e->fe_flags & FIEMAP_EXTENT_LAST)
417 goto done;
158 418
159 if (!req)
160 break;
161
162 nreqs--;
163
164 if (req->type == REQ_QUIT)
165 started--;
166 else
167 {
168 int errorno = errno;
169 errno = req->errorno;
170
171 if (req->type == REQ_READ)
172 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173
174 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175 SvREADONLY_off (req->data);
176
177 if (req->statdata)
178 {
179 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180 PL_laststatval = req->result;
181 PL_statcache = *(req->statdata);
182 }
183
184 ENTER;
185 PUSHMARK (SP);
186
187 if (req->type == REQ_READDIR)
188 {
189 SV *rv = &PL_sv_undef;
190
191 if (req->result >= 0)
192 {
193 char *buf = req->data2ptr;
194 AV *av = newAV ();
195
196 while (req->result)
197 {
198 SV *sv = newSVpv (buf, 0);
199
200 av_push (av, sv);
201 buf += SvCUR (sv) + 1;
202 req->result--;
203 }
204
205 rv = sv_2mortal (newRV_noinc ((SV *)av));
206 }
207
208 XPUSHs (rv);
209 }
210 else
211 {
212 XPUSHs (sv_2mortal (newSViv (req->result)));
213
214 if (req->type == REQ_OPEN)
215 {
216 /* convert fd to fh */
217 SV *fh;
218
219 PUTBACK;
220 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
221 SPAGAIN;
222
223 fh = SvREFCNT_inc (POPs);
224
225 PUSHMARK (SP);
226 XPUSHs (sv_2mortal (fh));
227 }
228 }
229
230 if (SvOK (req->callback))
231 {
232 PUTBACK;
233 call_sv (req->callback, G_VOID | G_EVAL);
234 SPAGAIN;
235
236 if (SvTRUE (ERRSV))
237 {
238 free_req (req);
239 croak (0);
240 }
241 }
242
243 LEAVE;
244
245 errno = errorno;
246 count++;
247 }
248
249 free_req (req);
250 }
251
252 return count;
253}
254
255static void *aio_proc(void *arg);
256
257static void
258start_thread (void)
259{
260 sigset_t fullsigset, oldsigset;
261 pthread_t tid;
262 pthread_attr_t attr;
263
264 pthread_attr_init (&attr);
265 pthread_attr_setstacksize (&attr, STACKSIZE);
266 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267
268 sigfillset (&fullsigset);
269 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270
271 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
272 started++;
273
274 sigprocmask (SIG_SETMASK, &oldsigset, 0);
275}
276
277static void
278send_req (aio_req req)
279{
280 while (started < wanted && nreqs >= started)
281 start_thread ();
282
283 nreqs++;
284
285 pthread_mutex_lock (&reqlock);
286
287 req->next = 0;
288
289 if (reqe)
290 {
291 reqe->next = req;
292 reqe = req;
293 }
294 else
295 reqe = reqs = req;
296
297 pthread_cond_signal (&reqwait);
298 pthread_mutex_unlock (&reqlock);
299
300 if (nreqs > max_outstanding)
301 for (;;)
302 {
303 poll_cb ();
304
305 if (nreqs <= max_outstanding)
306 break;
307
308 poll_wait ();
309 }
310}
311
312static void
313end_thread (void)
314{
315 aio_req req;
316 Newz (0, req, 1, aio_cb);
317 req->type = REQ_QUIT;
318
319 send_req (req);
320}
321
322static void min_parallel (int nthreads)
323{
324 if (wanted < nthreads)
325 wanted = nthreads;
326}
327
328static void max_parallel (int nthreads)
329{
330 int cur = started;
331
332 if (wanted > nthreads)
333 wanted = nthreads;
334
335 while (cur > wanted)
336 {
337 end_thread ();
338 cur--;
339 }
340
341 while (started > wanted)
342 {
343 poll_wait ();
344 poll_cb ();
345 }
346}
347
348static void create_pipe ()
349{
350 if (pipe (respipe))
351 croak ("unable to initialize result pipe");
352
353 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
354 croak ("cannot set result pipe to nonblocking mode");
355
356 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
357 croak ("cannot set result pipe to nonblocking mode");
358}
359
360/*****************************************************************************/
361/* work around various missing functions */
362
363#if !HAVE_PREADWRITE
364# define pread aio_pread
365# define pwrite aio_pwrite
366
367/*
368 * make our pread/pwrite safe against themselves, but not against
369 * normal read/write by using a mutex. slows down execution a lot,
370 * but that's your problem, not mine.
371 */
372static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373
374static ssize_t
375pread (int fd, void *buf, size_t count, off_t offset)
376{
377 ssize_t res;
378 off_t ooffset;
379
380 pthread_mutex_lock (&preadwritelock);
381 ooffset = lseek (fd, 0, SEEK_CUR);
382 lseek (fd, offset, SEEK_SET);
383 res = read (fd, buf, count);
384 lseek (fd, ooffset, SEEK_SET);
385 pthread_mutex_unlock (&preadwritelock);
386
387 return res;
388}
389
390static ssize_t
391pwrite (int fd, void *buf, size_t count, off_t offset)
392{
393 ssize_t res;
394 off_t ooffset;
395
396 pthread_mutex_lock (&preadwritelock);
397 ooffset = lseek (fd, 0, SEEK_CUR);
398 lseek (fd, offset, SEEK_SET);
399 res = write (fd, buf, count);
400 lseek (fd, offset, SEEK_SET);
401 pthread_mutex_unlock (&preadwritelock);
402
403 return res;
404}
405#endif
406
407#if !HAVE_FDATASYNC
408# define fdatasync fsync
409#endif
410
411#if !HAVE_READAHEAD
412# define readahead aio_readahead
413
414static ssize_t
415readahead (int fd, off_t offset, size_t count)
416{
417 char readahead_buf[4096];
418
419 while (count > 0)
420 {
421 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
422
423 pread (fd, readahead_buf, len, offset);
424 offset += len;
425 count -= len;
426 }
427
428 errno = 0;
429}
430#endif
431
432#if !HAVE_READDIR_R
433# define readdir_r aio_readdir_r
434
435static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436
437static int
438readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439{
440 struct dirent *e;
441 int errorno;
442
443 pthread_mutex_lock (&readdirlock);
444
445 e = readdir (dirp);
446 errorno = errno;
447
448 if (e)
449 {
450 *res = ent;
451 strcpy (ent->d_name, e->d_name);
452 }
453 else
454 *res = 0;
455
456 pthread_mutex_unlock (&readdirlock);
457
458 errno = errorno;
459 return e ? 0 : -1;
460}
461#endif
462
463/* sendfile always needs emulation */
464static ssize_t
465sendfile_ (int ofd, int ifd, off_t offset, size_t count)
466{
467 ssize_t res;
468
469 if (!count)
470 return 0;
471
472#if HAVE_SENDFILE
473# if __linux
474 res = sendfile (ofd, ifd, &offset, count);
475
476# elif __freebsd
477 /*
478 * Of course, the freebsd sendfile is a dire hack with no thoughts
479 * wasted on making it similar to other I/O functions.
480 */
481 {
482 off_t sbytes;
483 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
484
485 if (res < 0 && sbytes)
486 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
487 res = sbytes;
488 }
489
490# elif __hpux
491 res = sendfile (ofd, ifd, offset, count, 0, 0);
492
493# elif __solaris
494 {
495 struct sendfilevec vec;
496 size_t sbytes;
497
498 vec.sfv_fd = ifd;
499 vec.sfv_flag = 0;
500 vec.sfv_off = offset;
501 vec.sfv_len = count;
502
503 res = sendfilev (ofd, &vec, 1, &sbytes);
504
505 if (res < 0 && sbytes)
506 res = sbytes;
507 }
508
509# endif
510#else
511 res = -1;
512 errno = ENOSYS;
513#endif
514
515 if (res < 0
516 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
517#if __solaris
518 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
519#endif
520 )
521 )
522 {
523 /* emulate sendfile. this is a major pain in the ass */
524 char buf[4096];
525 res = 0;
526
527 while (count)
528 {
529 ssize_t cnt;
530
531 cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
532
533 if (cnt <= 0)
534 {
535 if (cnt && !res) res = -1;
536 break;
537 }
538
539 cnt = write (ofd, buf, cnt);
540
541 if (cnt <= 0)
542 {
543 if (cnt && !res) res = -1;
544 break;
545 }
546
547 offset += cnt;
548 res += cnt;
549 count -= cnt;
550 } 419 }
551 } 420 }
552 421
553 return res; 422done:
554} 423 req->result = 0;
555 424
556/* read a full directory */ 425#else
426 errno = ENOSYS;
427#endif
428}
429
430/*****************************************************************************/
431
432static int close_fd; /* dummy fd to close fds via dup2 */
433
434enum {
435 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
436};
437
438typedef eio_req *aio_req;
439typedef eio_req *aio_req_ornot;
440typedef eio_wd aio_wd;
441
442static SV *on_next_submit;
443static int next_pri = EIO_PRI_DEFAULT;
444static int max_outstanding;
445
446static s_epipe respipe;
447
448static void req_destroy (aio_req req);
449static void req_cancel (aio_req req);
450
451static void
452want_poll (void)
453{
454 /* write a dummy byte to the pipe so fh becomes ready */
455 s_epipe_signal (&respipe);
456}
457
458static void
459done_poll (void)
460{
461 /* read any signals sent by the worker threads */
462 s_epipe_drain (&respipe);
463}
464
465/* must be called at most once */
466static SV *
467req_sv (aio_req req, HV *stash)
468{
469 if (!req->self)
470 {
471 req->self = (SV *)newHV ();
472 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
473 }
474
475 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
476}
477
478static SV *
479newSVaio_wd (aio_wd wd)
480{
481 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
482}
483
484static aio_req
485SvAIO_REQ (SV *sv)
486{
487 MAGIC *mg;
488
489 if (!SvROK (sv)
490 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
491 || (SvSTASH (SvRV (sv)) != aio_grp_stash
492 && SvSTASH (SvRV (sv)) != aio_req_stash
493 && !sv_derived_from (sv, "IO::AIO::REQ")))
494 croak ("object of class IO::AIO::REQ expected");
495
496 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
497
498 return mg ? (aio_req)mg->mg_ptr : 0;
499}
500
501static aio_wd
502SvAIO_WD (SV *sv)
503{
504 if (!SvROK (sv)
505 || SvTYPE (SvRV (sv)) != SVt_PVMG
506 || SvSTASH (SvRV (sv)) != aio_wd_stash)
507 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
508
509 return (aio_wd)(long)SvIVX (SvRV (sv));
510}
511
512static SV *
513newmortalFH (int fd, int flags)
514{
515 if (fd < 0)
516 return &PL_sv_undef;
517
518 GV *gv = (GV *)sv_newmortal ();
519 char sym[64];
520 int symlen;
521
522 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
523 gv_init (gv, aio_stash, sym, symlen, 0);
524
525 symlen = snprintf (
526 sym,
527 sizeof (sym),
528 "%s&=%d",
529 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
530 fd
531 );
532
533 return do_open (gv, sym, symlen, 0, 0, 0, 0)
534 ? (SV *)gv : &PL_sv_undef;
535}
536
537static void
538aio_grp_feed (aio_req grp)
539{
540 if (grp->sv2 && SvOK (grp->sv2))
541 {
542 dSP;
543
544 ENTER;
545 SAVETMPS;
546 PUSHMARK (SP);
547 XPUSHs (req_sv (grp, aio_grp_stash));
548 PUTBACK;
549 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
550 SPAGAIN;
551 FREETMPS;
552 LEAVE;
553 }
554}
555
556static void
557req_submit (eio_req *req)
558{
559 eio_submit (req);
560
561 if (expect_false (on_next_submit))
562 {
563 dSP;
564 SV *cb = sv_2mortal (on_next_submit);
565
566 on_next_submit = 0;
567
568 PUSHMARK (SP);
569 PUTBACK;
570 call_sv (cb, G_DISCARD | G_EVAL);
571 }
572}
573
557static int 574static int
558scandir_ (const char *path, void **namesp) 575req_invoke (eio_req *req)
559{ 576{
560 DIR *dirp = opendir (path); 577 if (req->flags & FLAG_SV2_RO_OFF)
561 union 578 SvREADONLY_off (req->sv2);
562 {
563 struct dirent d;
564 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565 } u;
566 struct dirent *entp;
567 char *name, *names;
568 int memlen = 4096;
569 int memofs = 0;
570 int res = 0;
571 int errorno;
572 579
573 if (!dirp) 580 if (!EIO_CANCELLED (req) && req->callback)
574 return -1;
575
576 names = malloc (memlen);
577
578 for (;;)
579 { 581 {
580 errno = 0, readdir_r (dirp, &u.d, &entp); 582 dSP;
583 static SV *sv_result_cache; /* caches the result integer SV */
584 SV *sv_result;
581 585
582 if (!entp) 586 ENTER;
583 break; 587 SAVETMPS;
588 PUSHMARK (SP);
589 EXTEND (SP, 1);
584 590
585 name = entp->d_name; 591 /* do not recreate the result IV from scratch each time */
586 592 if (expect_true (sv_result_cache))
587 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588 { 593 {
589 int len = strlen (name) + 1; 594 sv_result = sv_result_cache; sv_result_cache = 0;
590 595 SvIV_set (sv_result, req->result);
591 res++; 596 SvIOK_only (sv_result);
592
593 while (memofs + len > memlen)
594 {
595 memlen *= 2;
596 names = realloc (names, memlen);
597 if (!names)
598 break;
599 }
600
601 memcpy (names + memofs, name, len);
602 memofs += len;
603 }
604 }
605
606 errorno = errno;
607 closedir (dirp);
608
609 if (errorno)
610 {
611 free (names);
612 errno = errorno;
613 res = -1;
614 }
615
616 *namesp = (void *)names;
617 return res;
618}
619
620/*****************************************************************************/
621
622static void *
623aio_proc (void *thr_arg)
624{
625 aio_req req;
626 int type;
627
628 do
629 {
630 pthread_mutex_lock (&reqlock);
631
632 for (;;)
633 {
634 req = reqs;
635
636 if (reqs)
637 {
638 reqs = reqs->next;
639 if (!reqs) reqe = 0;
640 }
641
642 if (req)
643 break;
644
645 pthread_cond_wait (&reqwait, &reqlock);
646 }
647
648 pthread_mutex_unlock (&reqlock);
649
650 errno = 0; /* strictly unnecessary */
651
652 type = req->type;
653
654 switch (type)
655 {
656 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658
659 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
661
662 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665
666 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667 case REQ_CLOSE: req->result = close (req->fd); break;
668 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
672 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
673
674 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
675 case REQ_FSYNC: req->result = fsync (req->fd); break;
676 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
677
678 case REQ_QUIT:
679 break;
680
681 default:
682 req->result = ENOSYS;
683 break;
684 }
685
686 req->errorno = errno;
687
688 pthread_mutex_lock (&reslock);
689
690 req->next = 0;
691
692 if (rese)
693 {
694 rese->next = req;
695 rese = req;
696 } 597 }
697 else 598 else
698 { 599 {
699 rese = ress = req; 600 sv_result = newSViv (req->result);
700 601 SvREADONLY_on (sv_result);
701 /* write a dummy byte to the pipe so fh becomes ready */
702 write (respipe [1], &respipe, 1);
703 } 602 }
704 603
705 pthread_mutex_unlock (&reslock); 604 switch (req->type)
605 {
606 case EIO_WD_OPEN:
607 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
608 break;
609
610 case EIO_READDIR:
611 {
612 SV *rv = &PL_sv_undef;
613
614 if (req->result >= 0)
615 {
616 int i;
617 char *names = (char *)req->ptr2;
618 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
619 AV *av = newAV ();
620
621 av_extend (av, req->result - 1);
622
623 for (i = 0; i < req->result; ++i)
624 {
625 if (req->int1 & EIO_READDIR_DENTS)
626 {
627 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
628
629 if (req->int1 & EIO_READDIR_CUSTOM2)
630 {
631 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
632 AV *avent = newAV ();
633
634 av_extend (avent, 2);
635
636 if (!sv_type [ent->type])
637 {
638 sv_type [ent->type] = newSViv (ent->type);
639 SvREADONLY_on (sv_type [ent->type]);
640 }
641
642 av_store (avent, 0, namesv);
643 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
644 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
645
646 av_store (av, i, newRV_noinc ((SV *)avent));
647 }
648 else
649 av_store (av, i, namesv);
650
651 ++ent;
652 }
653 else
654 {
655 SV *name = newSVpv (names, 0);
656 av_store (av, i, name);
657 names += SvCUR (name) + 1;
658 }
659 }
660
661 rv = sv_2mortal (newRV_noinc ((SV *)av));
662 }
663
664 PUSHs (rv);
665
666 if (req->int1 & EIO_READDIR_CUSTOM1)
667 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
668 }
669 break;
670
671 case EIO_OPEN:
672 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
673 break;
674
675 case EIO_STATVFS:
676 case EIO_FSTATVFS:
677 {
678 SV *rv = &PL_sv_undef;
679
680#ifndef _WIN32
681 if (req->result >= 0)
682 {
683 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
684 HV *hv = newHV ();
685 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
686 * chooses to make it a struct.
687 */
688 unsigned long fsid = 0;
689 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
690
691 rv = sv_2mortal (newRV_noinc ((SV *)hv));
692
693 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
694 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
695 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
696 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
697 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
698 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
699 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
700 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
701 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
702 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
703 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
704 }
705#endif
706
707 PUSHs (rv);
708 }
709
710 break;
711
712 case EIO_GROUP:
713 req->int1 = 2; /* mark group as finished */
714
715 if (req->sv1)
716 {
717 int i;
718 AV *av = (AV *)req->sv1;
719
720 EXTEND (SP, AvFILL (av) + 1);
721 for (i = 0; i <= AvFILL (av); ++i)
722 PUSHs (*av_fetch (av, i, 0));
723 }
724 break;
725
726 case EIO_NOP:
727 case EIO_BUSY:
728 break;
729
730 case EIO_READLINK:
731 case EIO_REALPATH:
732 if (req->result > 0)
733 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
734 break;
735
736 case EIO_STAT:
737 case EIO_LSTAT:
738 case EIO_FSTAT:
739 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
740
741 if (!(PL_laststatval = req->result))
742 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
743 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
744
745 PUSHs (sv_result);
746 break;
747
748 case EIO_SEEK:
749 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
750 break;
751
752 case EIO_READ:
753 {
754 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
755 *SvEND (req->sv2) = 0;
756 SvPOK_only (req->sv2);
757 SvSETMAGIC (req->sv2);
758 PUSHs (sv_result);
759 }
760 break;
761
762 case EIO_SLURP:
763 {
764 if (req->result >= 0)
765 {
766 /* if length was originally not known, we steal the malloc'ed memory */
767 if (req->flags & EIO_FLAG_PTR2_FREE)
768 {
769 req->flags &= ~EIO_FLAG_PTR2_FREE;
770 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
771 }
772 else
773 {
774 SvCUR_set (req->sv2, req->result);
775 *SvEND (req->sv2) = 0;
776 SvPOK_only (req->sv2);
777 }
778
779 SvSETMAGIC (req->sv2);
780 }
781
782 PUSHs (sv_result);
783 }
784 break;
785
786 case EIO_CUSTOM:
787 if (req->feed == fiemap)
788 {
789#if HAVE_FIEMAP
790 if (!req->result)
791 {
792 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
793
794 if (fiemap->fm_extent_count)
795 {
796 AV *av = newAV ();
797 int i;
798
799 while (fiemap->fm_mapped_extents)
800 {
801 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
802 AV *ext_av = newAV ();
803
804 av_store (ext_av, 3, newSVuv (extent->fe_flags));
805 av_store (ext_av, 2, newSVval64 (extent->fe_length));
806 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
807 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
808
809 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
810 }
811
812 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
813 }
814 else
815 {
816 SvIV_set (sv_result, fiemap->fm_mapped_extents);
817 PUSHs (sv_result);
818 }
819 }
820#endif
821 }
822 else
823 PUSHs (sv_result);
824 break;
825
826#if 0
827 case EIO_CLOSE:
828 PerlIOUnix_refcnt_dec (req->int1);
829 break;
830#endif
831
832 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
833 if (req->result > 0)
834 SvIV_set (sv_result, 0);
835 /* FALLTHROUGH */
836
837 default:
838 PUSHs (sv_result);
839 break;
840 }
841
842 errno = req->errorno;
843
844 PUTBACK;
845 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
846 SPAGAIN;
847
848 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
849 SvREFCNT_dec (sv_result);
850 else
851 sv_result_cache = sv_result;
852
853 FREETMPS;
854 LEAVE;
855
856 PUTBACK;
706 } 857 }
707 while (type != REQ_QUIT);
708 858
859 return !!SvTRUE (ERRSV);
860}
861
862static void
863req_destroy (aio_req req)
864{
865 if (req->self)
866 {
867 sv_unmagic (req->self, PERL_MAGIC_ext);
868 SvREFCNT_dec (req->self);
869 }
870
871 SvREFCNT_dec (req->sv1);
872 SvREFCNT_dec (req->sv2);
873 SvREFCNT_dec (req->sv3);
874 SvREFCNT_dec (req->sv4);
875 SvREFCNT_dec (req->callback);
876
877 free (req);
878}
879
880static void
881req_cancel_subs (aio_req grp)
882{
883 if (grp->type != EIO_GROUP)
709 return 0; 884 return;
885
886 SvREFCNT_dec (grp->sv2);
887 grp->sv2 = 0;
888
889 eio_grp_cancel (grp);
890}
891
892static void ecb_cold
893create_respipe (void)
894{
895 if (s_epipe_renew (&respipe))
896 croak ("IO::AIO: unable to initialize result pipe");
897}
898
899static void
900poll_wait (void)
901{
902 while (eio_nreqs ())
903 {
904 int size;
905
906 X_LOCK (EIO_POOL->reslock);
907 size = EIO_POOL->res_queue.size;
908 X_UNLOCK (EIO_POOL->reslock);
909
910 if (size)
911 return;
912
913 etp_maybe_start_thread (EIO_POOL);
914
915 s_epipe_wait (&respipe);
916 }
917}
918
919static int
920poll_cb (void)
921{
922 for (;;)
923 {
924 int res = eio_poll ();
925
926 if (res > 0)
927 croak (0);
928
929 if (!max_outstanding || max_outstanding > eio_nreqs ())
930 return res;
931
932 poll_wait ();
933 }
934}
935
936static void ecb_cold
937reinit (void)
938{
939 create_respipe ();
940
941 if (eio_init (want_poll, done_poll) < 0)
942 croak ("IO::AIO: unable to initialise eio library");
710} 943}
711 944
712/*****************************************************************************/ 945/*****************************************************************************/
713 946
714static void atfork_prepare (void) 947static SV *
948get_cb (SV *cb_sv)
715{ 949{
716 pthread_mutex_lock (&reqlock); 950 SvGETMAGIC (cb_sv);
717 pthread_mutex_lock (&reslock); 951 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
718#if !HAVE_PREADWRITE
719 pthread_mutex_lock (&preadwritelock);
720#endif
721#if !HAVE_READDIR_R
722 pthread_mutex_lock (&readdirlock);
723#endif
724} 952}
725 953
726static void atfork_parent (void) 954static aio_req ecb_noinline
955dreq (SV *callback)
727{ 956{
728#if !HAVE_READDIR_R 957 SV *cb_cv;
729 pthread_mutex_unlock (&readdirlock);
730#endif
731#if !HAVE_PREADWRITE
732 pthread_mutex_unlock (&preadwritelock);
733#endif
734 pthread_mutex_unlock (&reslock);
735 pthread_mutex_unlock (&reqlock);
736}
737
738static void atfork_child (void)
739{
740 aio_req prv; 958 aio_req req;
959 int req_pri = next_pri;
960 next_pri = EIO_PRI_DEFAULT;
741 961
742 started = 0; 962 cb_cv = get_cb (callback);
743 963
744 while (reqs) 964 req = calloc (sizeof (*req), 1);
965 if (!req)
966 croak ("out of memory during eio_req allocation");
967
968 req->callback = SvREFCNT_inc (cb_cv);
969 req->pri = req_pri;
970
971 return req;
972}
973
974#define dREQ \
975 aio_req req = dreq (callback); \
976
977#define REQ_SEND \
978 PUTBACK; \
979 req_submit (req); \
980 SPAGAIN; \
981 \
982 if (GIMME_V != G_VOID) \
983 XPUSHs (req_sv (req, aio_req_stash));
984
985ecb_inline void
986req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
987{
988 if (expect_false (SvROK (path)))
745 { 989 {
746 prv = reqs; 990 SV *rv = SvRV (path);
747 reqs = prv->next; 991 SV *wdob;
748 free_req (prv); 992
993 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
994 {
995 path = AvARRAY (rv)[1];
996 wdob = AvARRAY (rv)[0];
997
998 if (SvOK (wdob))
999 {
1000 *wd = SvAIO_WD (wdob);
1001 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
1002 }
1003 else
1004 *wd = EIO_INVALID_WD;
1005 }
1006 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1007 {
1008 *wd = (aio_wd)(long)SvIVX (rv);
1009 *wdsv = SvREFCNT_inc_NN (rv);
1010 *ptr = ".";
1011 return; /* path set to "." */
1012 }
1013 else
1014 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
749 } 1015 }
750 1016
751 reqs = reqe = 0; 1017 *pathsv = newSVsv (path);
752 1018 *ptr = SvPVbyte_nolen (*pathsv);
753 while (ress) 1019}
1020
1021static void ecb_noinline
1022req_set_path1 (aio_req req, SV *path)
1023{
1024 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1025}
1026
1027static void ecb_noinline
1028req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1029{
1030 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1031
1032 switch (SvTYPE (rv))
754 { 1033 {
755 prv = ress; 1034 case SVt_PVIO:
756 ress = prv->next; 1035 case SVt_PVLV:
757 free_req (prv); 1036 case SVt_PVGV:
1037 req->type = type_fh;
1038 req->sv1 = newSVsv (fh_or_path);
1039 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1040 break;
1041
1042 default:
1043 req->type = type_path;
1044 req_set_path1 (req, fh_or_path);
1045 break;
758 } 1046 }
759
760 ress = rese = 0;
761
762 close (respipe [0]);
763 close (respipe [1]);
764 create_pipe ();
765
766 atfork_parent ();
767} 1047}
768 1048
769#define dREQ \ 1049/*****************************************************************************/
770 aio_req req; \ 1050
771 \ 1051static void
772 if (SvOK (callback) && !SvROK (callback)) \ 1052ts_set (struct timespec *ts, NV value)
773 croak ("clalback must be undef or of reference type"); \ 1053{
774 \ 1054 ts->tv_sec = value;
775 Newz (0, req, 1, aio_cb); \ 1055 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
776 if (!req) \ 1056}
777 croak ("out of memory during aio_req allocation"); \ 1057
778 \ 1058static NV
779 req->callback = newSVsv (callback); 1059ts_get (const struct timespec *ts)
780 1060{
1061 return ts->tv_sec + ts->tv_nsec * 1e-9;
1062}
1063
1064/*****************************************************************************/
1065
1066XS(boot_IO__AIO) ecb_cold;
1067
781MODULE = IO::AIO PACKAGE = IO::AIO 1068MODULE = IO::AIO PACKAGE = IO::AIO
782 1069
783PROTOTYPES: ENABLE 1070PROTOTYPES: ENABLE
784 1071
785BOOT: 1072BOOT:
786{ 1073{
787 create_pipe (); 1074 static const struct {
788 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1075 const char *name;
789} 1076 IV iv;
1077 } *civ, const_iv[] = {
1078# define const_niv(name, value) { # name, (IV) value },
1079# define const_iv(name) { # name, (IV) name },
1080# define const_eio(name) { # name, (IV) EIO_ ## name },
790 1081
1082 /* you have to re-run ./gendef0 after adding/removing any constants here */
1083 /* the first block can be undef if missing */
1084 const_iv (ENOSYS)
1085 const_iv (EXDEV)
1086 const_iv (EBADR)
1087
1088 /* for lseek */
1089 const_iv (SEEK_DATA)
1090 const_iv (SEEK_HOLE)
1091
1092 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1093 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1094 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1095 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1096 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1097 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1098
1099 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1100 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1101 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1102 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1103 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1104
1105 /* the second block will be 0 when missing */
1106 const_iv (O_ACCMODE)
1107
1108 const_iv (O_RDONLY)
1109 const_iv (O_WRONLY)
1110 const_iv (O_RDWR)
1111 const_iv (O_CREAT)
1112 const_iv (O_TRUNC)
1113 const_iv (O_EXCL)
1114 const_iv (O_APPEND)
1115
1116 const_iv (O_ASYNC)
1117 const_iv (O_DIRECT)
1118 const_iv (O_NOATIME)
1119
1120 const_iv (O_CLOEXEC)
1121 const_iv (O_NOCTTY)
1122 const_iv (O_NOFOLLOW)
1123 const_iv (O_NONBLOCK)
1124 const_iv (O_EXEC)
1125 const_iv (O_SEARCH)
1126 const_iv (O_DIRECTORY)
1127 const_iv (O_DSYNC)
1128 const_iv (O_RSYNC)
1129 const_iv (O_SYNC)
1130 const_iv (O_PATH)
1131 const_iv (O_TMPFILE)
1132 const_iv (O_TTY_INIT)
1133
1134 const_iv (S_IFIFO)
1135 const_iv (S_IFCHR)
1136 const_iv (S_IFBLK)
1137 const_iv (S_IFLNK)
1138 const_iv (S_IFREG)
1139 const_iv (S_IFDIR)
1140 const_iv (S_IFWHT)
1141 const_iv (S_IFSOCK)
1142 const_iv (S_IFMT)
1143
1144 const_iv (ST_RDONLY)
1145 const_iv (ST_NOSUID)
1146 const_iv (ST_NODEV)
1147 const_iv (ST_NOEXEC)
1148 const_iv (ST_SYNCHRONOUS)
1149 const_iv (ST_MANDLOCK)
1150 const_iv (ST_WRITE)
1151 const_iv (ST_APPEND)
1152 const_iv (ST_IMMUTABLE)
1153 const_iv (ST_NOATIME)
1154 const_iv (ST_NODIRATIME)
1155 const_iv (ST_RELATIME)
1156
1157 const_iv (PROT_NONE)
1158 const_iv (PROT_EXEC)
1159 const_iv (PROT_READ)
1160 const_iv (PROT_WRITE)
1161
1162 const_iv (MAP_PRIVATE)
1163 const_iv (MAP_SHARED)
1164 const_iv (MAP_FIXED)
1165 const_iv (MAP_ANONYMOUS)
1166
1167 /* linuxish */
1168 const_iv (MAP_LOCKED)
1169 const_iv (MAP_NORESERVE)
1170 const_iv (MAP_POPULATE)
1171 const_iv (MAP_NONBLOCK)
1172 const_iv (MAP_GROWSDOWN)
1173 const_iv (MAP_32BIT)
1174 const_iv (MAP_HUGETLB)
1175 const_iv (MAP_STACK)
1176
1177 const_iv (MREMAP_MAYMOVE)
1178 const_iv (MREMAP_FIXED)
1179
1180 const_iv (F_DUPFD_CLOEXEC)
1181
1182 const_iv (MSG_CMSG_CLOEXEC)
1183 const_iv (SOCK_CLOEXEC)
1184
1185 const_iv (F_OFD_GETLK)
1186 const_iv (F_OFD_SETLK)
1187 const_iv (F_OFD_GETLKW)
1188
1189 const_iv (FIFREEZE)
1190 const_iv (FITHAW)
1191 const_iv (FITRIM)
1192 const_iv (FICLONE)
1193 const_iv (FICLONERANGE)
1194 const_iv (FIDEDUPERANGE)
1195
1196 const_iv (FS_IOC_GETFLAGS)
1197 const_iv (FS_IOC_SETFLAGS)
1198 const_iv (FS_IOC_GETVERSION)
1199 const_iv (FS_IOC_SETVERSION)
1200 const_iv (FS_IOC_FIEMAP)
1201 const_iv (FS_IOC_FSGETXATTR)
1202 const_iv (FS_IOC_FSSETXATTR)
1203 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1204 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1205 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1206
1207 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1208
1209 const_iv (FS_SECRM_FL)
1210 const_iv (FS_UNRM_FL)
1211 const_iv (FS_COMPR_FL)
1212 const_iv (FS_SYNC_FL)
1213 const_iv (FS_IMMUTABLE_FL)
1214 const_iv (FS_APPEND_FL)
1215 const_iv (FS_NODUMP_FL)
1216 const_iv (FS_NOATIME_FL)
1217 const_iv (FS_DIRTY_FL)
1218 const_iv (FS_COMPRBLK_FL)
1219 const_iv (FS_NOCOMP_FL)
1220 const_iv (FS_ENCRYPT_FL)
1221 const_iv (FS_BTREE_FL)
1222 const_iv (FS_INDEX_FL)
1223 const_iv (FS_JOURNAL_DATA_FL)
1224 const_iv (FS_NOTAIL_FL)
1225 const_iv (FS_DIRSYNC_FL)
1226 const_iv (FS_TOPDIR_FL)
1227 const_iv (FS_FL_USER_MODIFIABLE)
1228
1229 const_iv (FS_XFLAG_REALTIME)
1230 const_iv (FS_XFLAG_PREALLOC)
1231 const_iv (FS_XFLAG_IMMUTABLE)
1232 const_iv (FS_XFLAG_APPEND)
1233 const_iv (FS_XFLAG_SYNC)
1234 const_iv (FS_XFLAG_NOATIME)
1235 const_iv (FS_XFLAG_NODUMP)
1236 const_iv (FS_XFLAG_RTINHERIT)
1237 const_iv (FS_XFLAG_PROJINHERIT)
1238 const_iv (FS_XFLAG_NOSYMLINKS)
1239 const_iv (FS_XFLAG_EXTSIZE)
1240 const_iv (FS_XFLAG_EXTSZINHERIT)
1241 const_iv (FS_XFLAG_NODEFRAG)
1242 const_iv (FS_XFLAG_FILESTREAM)
1243 const_iv (FS_XFLAG_DAX)
1244 const_iv (FS_XFLAG_HASATTR)
1245
1246 const_iv (FIEMAP_FLAG_SYNC)
1247 const_iv (FIEMAP_FLAG_XATTR)
1248 const_iv (FIEMAP_FLAGS_COMPAT)
1249 const_iv (FIEMAP_EXTENT_LAST)
1250 const_iv (FIEMAP_EXTENT_UNKNOWN)
1251 const_iv (FIEMAP_EXTENT_DELALLOC)
1252 const_iv (FIEMAP_EXTENT_ENCODED)
1253 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1254 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1255 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1256 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1257 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1258 const_iv (FIEMAP_EXTENT_MERGED)
1259 const_iv (FIEMAP_EXTENT_SHARED)
1260
1261 const_iv (SPLICE_F_MOVE)
1262 const_iv (SPLICE_F_NONBLOCK)
1263 const_iv (SPLICE_F_MORE)
1264 const_iv (SPLICE_F_GIFT)
1265
1266 const_iv (EFD_CLOEXEC)
1267 const_iv (EFD_NONBLOCK)
1268 const_iv (EFD_SEMAPHORE)
1269
1270 const_iv (CLOCK_REALTIME)
1271 const_iv (CLOCK_MONOTONIC)
1272 const_iv (CLOCK_BOOTTIME)
1273 const_iv (CLOCK_REALTIME_ALARM)
1274 const_iv (CLOCK_BOOTTIME_ALARM)
1275
1276 const_iv (TFD_NONBLOCK)
1277 const_iv (TFD_CLOEXEC)
1278
1279 const_iv (TFD_TIMER_ABSTIME)
1280 const_iv (TFD_TIMER_CANCEL_ON_SET)
1281
1282 /* these are libeio constants, and are independent of gendef0 */
1283 const_eio (SEEK_SET)
1284 const_eio (SEEK_CUR)
1285 const_eio (SEEK_END)
1286
1287 const_eio (MCL_FUTURE)
1288 const_eio (MCL_CURRENT)
1289 const_eio (MCL_ONFAULT)
1290
1291 const_eio (MS_ASYNC)
1292 const_eio (MS_INVALIDATE)
1293 const_eio (MS_SYNC)
1294
1295 const_eio (MT_MODIFY)
1296
1297 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1298 const_eio (SYNC_FILE_RANGE_WRITE)
1299 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1300
1301 const_eio (FALLOC_FL_KEEP_SIZE)
1302 const_eio (FALLOC_FL_PUNCH_HOLE)
1303 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1304 const_eio (FALLOC_FL_ZERO_RANGE)
1305 const_eio (FALLOC_FL_INSERT_RANGE)
1306 const_eio (FALLOC_FL_UNSHARE_RANGE)
1307
1308 const_eio (RENAME_NOREPLACE)
1309 const_eio (RENAME_EXCHANGE)
1310 const_eio (RENAME_WHITEOUT)
1311
1312 const_eio (READDIR_DENTS)
1313 const_eio (READDIR_DIRS_FIRST)
1314 const_eio (READDIR_STAT_ORDER)
1315 const_eio (READDIR_FOUND_UNKNOWN)
1316
1317 const_eio (DT_UNKNOWN)
1318 const_eio (DT_FIFO)
1319 const_eio (DT_CHR)
1320 const_eio (DT_DIR)
1321 const_eio (DT_BLK)
1322 const_eio (DT_REG)
1323 const_eio (DT_LNK)
1324 const_eio (DT_SOCK)
1325 const_eio (DT_WHT)
1326 };
1327
1328 aio_stash = gv_stashpv ("IO::AIO" , 1);
1329 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1330 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1331 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1332
1333 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1334 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1335
1336 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1337
1338 /* allocate dummy pipe fd for aio_close */
1339 {
1340 int pipefd [2];
1341
1342 if (
1343#ifdef _WIN32
1344 _pipe (pipefd, 1, _O_BINARY) < 0
1345#else
1346 pipe (pipefd) < 0
1347 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1348#endif
1349 || close (pipefd [1]) < 0
1350 )
1351 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1352
1353 close_fd = pipefd [0];
1354 }
1355
1356 reinit ();
1357}
1358
791void 1359void
792min_parallel (nthreads) 1360reinit ()
793 int nthreads 1361 PROTOTYPE:
1362
1363void
1364max_poll_reqs (unsigned int nreqs)
794 PROTOTYPE: $ 1365 PROTOTYPE: $
1366 CODE:
1367 eio_set_max_poll_reqs (nreqs);
795 1368
796void 1369void
797max_parallel (nthreads) 1370max_poll_time (double nseconds)
798 int nthreads
799 PROTOTYPE: $ 1371 PROTOTYPE: $
800
801int
802max_outstanding (nreqs)
803 int nreqs
804 PROTOTYPE: $
805 CODE: 1372 CODE:
806 RETVAL = max_outstanding; 1373 eio_set_max_poll_time (nseconds);
1374
1375void
1376min_parallel (unsigned int nthreads)
1377 PROTOTYPE: $
1378 CODE:
1379 eio_set_min_parallel (nthreads);
1380
1381void
1382max_parallel (unsigned int nthreads)
1383 PROTOTYPE: $
1384 CODE:
1385 eio_set_max_parallel (nthreads);
1386
1387void
1388max_idle (unsigned int nthreads)
1389 PROTOTYPE: $
1390 CODE:
1391 eio_set_max_idle (nthreads);
1392
1393void
1394idle_timeout (unsigned int seconds)
1395 PROTOTYPE: $
1396 CODE:
1397 eio_set_idle_timeout (seconds);
1398
1399void
1400max_outstanding (unsigned int maxreqs)
1401 PROTOTYPE: $
1402 CODE:
807 max_outstanding = nreqs; 1403 max_outstanding = maxreqs;
808 1404
809void 1405void
810aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1406aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
811 SV * pathname
812 int flags
813 int mode
814 SV * callback
815 PROTOTYPE: $$$;$
816 CODE: 1407 PPCODE:
817{ 1408{
818 dREQ; 1409 dREQ;
819 1410
1411 req->type = EIO_WD_OPEN;
1412 req_set_path1 (req, pathname);
1413
1414 REQ_SEND;
1415}
1416
1417void
1418aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1419 PPCODE:
1420{
1421 dREQ;
1422
820 req->type = REQ_OPEN; 1423 req->type = EIO_OPEN;
821 req->data = newSVsv (pathname); 1424 req_set_path1 (req, pathname);
822 req->dataptr = SvPVbyte_nolen (req->data);
823 req->fd = flags; 1425 req->int1 = flags;
824 req->mode = mode; 1426 req->int2 = mode;
825 1427
826 send_req (req); 1428 REQ_SEND;
827} 1429}
828 1430
829void 1431void
830aio_close (fh,callback=&PL_sv_undef) 1432aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
831 SV * fh
832 SV * callback
833 PROTOTYPE: $;$
834 ALIAS: 1433 ALIAS:
835 aio_close = REQ_CLOSE
836 aio_fsync = REQ_FSYNC 1434 aio_fsync = EIO_FSYNC
837 aio_fdatasync = REQ_FDATASYNC 1435 aio_fdatasync = EIO_FDATASYNC
1436 aio_syncfs = EIO_SYNCFS
838 CODE: 1437 PPCODE:
839{ 1438{
1439 int fd = s_fileno_croak (fh, 0);
840 dREQ; 1440 dREQ;
841 1441
842 req->type = ix; 1442 req->type = ix;
843 req->fh = newSVsv (fh); 1443 req->sv1 = newSVsv (fh);
844 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1444 req->int1 = fd;
845 1445
846 send_req (req); 1446 REQ_SEND;
847} 1447}
848 1448
849void 1449void
1450aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1451 PPCODE:
1452{
1453 int fd = s_fileno_croak (fh, 0);
1454 dREQ;
1455
1456 req->type = EIO_SYNC_FILE_RANGE;
1457 req->sv1 = newSVsv (fh);
1458 req->int1 = fd;
1459 req->offs = offset;
1460 req->size = nbytes;
1461 req->int2 = flags;
1462
1463 REQ_SEND;
1464}
1465
1466void
1467aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1468 PPCODE:
1469{
1470 int fd = s_fileno_croak (fh, 0);
1471 dREQ;
1472
1473 req->type = EIO_FALLOCATE;
1474 req->sv1 = newSVsv (fh);
1475 req->int1 = fd;
1476 req->int2 = mode;
1477 req->offs = offset;
1478 req->size = len;
1479
1480 REQ_SEND;
1481}
1482
1483void
1484aio_close (SV *fh, SV *callback = &PL_sv_undef)
1485 PPCODE:
1486{
1487 int fd = s_fileno_croak (fh, 0);
1488 dREQ;
1489#if 0
1490 /* partially duplicate logic in s_fileno */
1491 SvGETMAGIC (fh);
1492
1493 if (SvROK (fh))
1494 {
1495 fh = SvRV (fh);
1496 SvGETMAGIC (fh);
1497 }
1498
1499 if (SvTYPE (fh) == SVt_PVGV)
1500 {
1501 /* perl filehandle */
1502 PerlIOUnix_refcnt_inc (fd);
1503 do_close ((GV *)fh, 1);
1504
1505 req->type = EIO_CLOSE;
1506 req->int1 = fd;
1507 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1508 }
1509 else
1510#endif
1511 {
1512 /* fd number */
1513 req->type = EIO_DUP2;
1514 req->int1 = close_fd;
1515 req->sv2 = newSVsv (fh);
1516 req->int2 = fd;
1517 }
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1524 PPCODE:
1525{
1526 int fd = s_fileno_croak (fh, 0);
1527 dREQ;
1528
1529 req->type = EIO_SEEK;
1530 req->sv1 = newSVsv (fh);
1531 req->int1 = fd;
1532 req->offs = SvVAL64 (offset);
1533 req->int2 = whence;
1534
1535 REQ_SEND;
1536}
1537
1538void
850aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1539aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
851 SV * fh
852 UV offset
853 UV length
854 SV * data
855 UV dataoffset
856 SV * callback
857 ALIAS: 1540 ALIAS:
858 aio_read = REQ_READ 1541 aio_read = EIO_READ
859 aio_write = REQ_WRITE 1542 aio_write = EIO_WRITE
860 PROTOTYPE: $$$$$;$
861 CODE: 1543 PPCODE:
862{ 1544{
863 aio_req req;
864 STRLEN svlen; 1545 STRLEN svlen;
1546 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
865 char *svptr = SvPVbyte (data, svlen); 1547 char *svptr = SvPVbyte (data, svlen);
866 1548 UV len = SvUV (length);
867 SvUPGRADE (data, SVt_PV);
868 SvPOK_on (data);
869 1549
870 if (dataoffset < 0) 1550 if (dataoffset < 0)
871 dataoffset += svlen; 1551 dataoffset += svlen;
872 1552
873 if (dataoffset < 0 || dataoffset > svlen) 1553 if (dataoffset < 0 || dataoffset > svlen)
874 croak ("data offset outside of string"); 1554 croak ("dataoffset outside of data scalar");
875 1555
876 if (ix == REQ_WRITE) 1556 if (ix == EIO_WRITE)
877 { 1557 {
878 /* write: check length and adjust. */ 1558 /* write: check length and adjust. */
879 if (length < 0 || length + dataoffset > svlen) 1559 if (!SvOK (length) || len + dataoffset > svlen)
880 length = svlen - dataoffset; 1560 len = svlen - dataoffset;
881 } 1561 }
882 else 1562 else
883 { 1563 {
884 /* read: grow scalar as necessary */ 1564 /* read: check type and grow scalar as necessary */
1565 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
885 svptr = SvGROW (data, length + dataoffset); 1566 svptr = sv_grow (data, len + dataoffset + 1);
1567 else if (SvCUR (data) < len + dataoffset)
1568 croak ("length + dataoffset outside of scalar, and cannot grow");
886 } 1569 }
887
888 if (length < 0)
889 croak ("length must not be negative");
890 1570
891 { 1571 {
892 dREQ; 1572 dREQ;
893 1573
894 req->type = ix; 1574 req->type = ix;
895 req->fh = newSVsv (fh); 1575 req->sv1 = newSVsv (fh);
896 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1576 req->int1 = fd;
897 : IoOFP (sv_2io (fh))); 1577 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
898 req->offset = offset; 1578 req->size = len;
899 req->length = length;
900 req->data = SvREFCNT_inc (data); 1579 req->sv2 = SvREFCNT_inc (data);
901 req->dataptr = (char *)svptr + dataoffset; 1580 req->ptr2 = (char *)svptr + dataoffset;
1581 req->stroffset = dataoffset;
902 1582
903 if (!SvREADONLY (data)) 1583 if (!SvREADONLY (data))
904 { 1584 {
905 SvREADONLY_on (data); 1585 SvREADONLY_on (data);
906 req->data2ptr = (void *)data; 1586 req->flags |= FLAG_SV2_RO_OFF;
907 } 1587 }
908 1588
909 send_req (req); 1589 REQ_SEND;
910 } 1590 }
911} 1591}
912 1592
913void 1593void
914aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1594aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
915 SV * out_fh
916 SV * in_fh
917 UV in_offset
918 UV length
919 SV * callback
920 PROTOTYPE: $$$$;$
921 CODE:
922{
923 dREQ;
924
925 req->type = REQ_SENDFILE;
926 req->fh = newSVsv (out_fh);
927 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
928 req->fh2 = newSVsv (in_fh);
929 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
930 req->offset = in_offset;
931 req->length = length;
932
933 send_req (req);
934}
935
936void
937aio_readahead (fh,offset,length,callback=&PL_sv_undef)
938 SV * fh
939 UV offset
940 IV length
941 SV * callback
942 PROTOTYPE: $$$;$
943 CODE:
944{
945 dREQ;
946
947 req->type = REQ_READAHEAD;
948 req->fh = newSVsv (fh);
949 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
950 req->offset = offset;
951 req->length = length;
952
953 send_req (req);
954}
955
956void
957aio_stat (fh_or_path,callback=&PL_sv_undef)
958 SV * fh_or_path
959 SV * callback
960 ALIAS: 1595 ALIAS:
961 aio_stat = REQ_STAT 1596 aio_ioctl = EIO_IOCTL
962 aio_lstat = REQ_LSTAT 1597 aio_fcntl = EIO_FCNTL
963 CODE: 1598 PPCODE:
964{ 1599{
965 dREQ; 1600 int fd = s_fileno_croak (fh, 0);
1601 char *svptr;
966 1602
967 New (0, req->statdata, 1, Stat_t); 1603 if (SvPOK (arg) || !SvNIOK (arg))
968 if (!req->statdata)
969 { 1604 {
970 free_req (req); 1605 STRLEN svlen;
971 croak ("out of memory during aio_req->statdata allocation"); 1606 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
972 } 1607#ifdef IOCPARM_LEN
1608 STRLEN need = IOCPARM_LEN (request);
1609#else
1610 STRLEN need = 256;
1611#endif
973 1612
974 if (SvPOK (fh_or_path)) 1613 if (svlen < need)
975 { 1614 svptr = SvGROW (arg, need);
976 req->type = ix;
977 req->data = newSVsv (fh_or_path);
978 req->dataptr = SvPVbyte_nolen (req->data);
979 } 1615 }
980 else 1616 else
1617 svptr = (char *)SvIV (arg);
1618
981 { 1619 {
1620 dREQ;
1621
982 req->type = REQ_FSTAT; 1622 req->type = ix;
983 req->fh = newSVsv (fh_or_path); 1623 req->sv1 = newSVsv (fh);
984 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1624 req->int1 = fd;
1625 req->int2 = (long)request;
1626 req->sv2 = SvREFCNT_inc (arg);
1627 req->ptr2 = svptr;
1628
1629 REQ_SEND;
985 } 1630 }
986
987 send_req (req);
988} 1631}
989 1632
990void 1633void
991aio_unlink (pathname,callback=&PL_sv_undef) 1634aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
992 SV * pathname
993 SV * callback
994 ALIAS: 1635 ALIAS:
995 aio_unlink = REQ_UNLINK
996 aio_rmdir = REQ_RMDIR
997 aio_readdir = REQ_READDIR 1636 aio_readlink = EIO_READLINK
1637 aio_realpath = EIO_REALPATH
1638 PPCODE:
1639{
1640 dREQ;
1641
1642 req->type = ix;
1643 req_set_path1 (req, pathname);
1644
1645 REQ_SEND;
1646}
1647
1648void
1649aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1650 PPCODE:
1651{
1652 int ifd = s_fileno_croak (in_fh , 0);
1653 int ofd = s_fileno_croak (out_fh, 1);
1654 dREQ;
1655
1656 req->type = EIO_SENDFILE;
1657 req->sv1 = newSVsv (out_fh);
1658 req->int1 = ofd;
1659 req->sv2 = newSVsv (in_fh);
1660 req->int2 = ifd;
1661 req->offs = in_offset;
1662 req->size = length;
1663
1664 REQ_SEND;
1665}
1666
1667void
1668aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1669 PPCODE:
1670{
1671 int fd = s_fileno_croak (fh, 0);
1672 dREQ;
1673
1674 req->type = EIO_READAHEAD;
1675 req->sv1 = newSVsv (fh);
1676 req->int1 = fd;
1677 req->offs = offset;
1678 req->size = length;
1679
1680 REQ_SEND;
1681}
1682
1683void
1684aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1685 ALIAS:
1686 aio_stat = EIO_STAT
1687 aio_lstat = EIO_LSTAT
1688 aio_statvfs = EIO_STATVFS
1689 PPCODE:
1690{
1691 dREQ;
1692
1693 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1694
1695 REQ_SEND;
1696}
1697
1698void
1699st_xtime ()
1700 ALIAS:
1701 st_atime = 0x01
1702 st_mtime = 0x02
1703 st_ctime = 0x04
1704 st_btime = 0x08
1705 st_xtime = 0x0f
1706 PPCODE:
1707 EXTEND (SP, 4);
1708 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1709 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1710 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1711 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1712
1713void
1714st_xtimensec ()
1715 ALIAS:
1716 st_atimensec = 0x01
1717 st_mtimensec = 0x02
1718 st_ctimensec = 0x04
1719 st_btimensec = 0x08
1720 st_xtimensec = 0x0f
1721 st_btimesec = 0x10
1722 st_gen = 0x20
1723 PPCODE:
1724 EXTEND (SP, 4);
1725 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1726 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1727 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1728 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1729 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1730 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1731
1732UV
1733major (UV dev)
1734 ALIAS:
1735 minor = 1
998 CODE: 1736 CODE:
1737 RETVAL = ix ? minor (dev) : major (dev);
1738 OUTPUT:
1739 RETVAL
1740
1741UV
1742makedev (UV maj, UV min)
1743 CODE:
1744 RETVAL = makedev (maj, min);
1745 OUTPUT:
1746 RETVAL
1747
1748void
1749aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1750 PPCODE:
1751{
1752 dREQ;
1753
1754 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1755 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1756 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1757
1758 REQ_SEND;
1759}
1760
1761void
1762aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1763 PPCODE:
1764{
1765 dREQ;
1766
1767 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1768 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1769
1770 REQ_SEND;
1771}
1772
1773void
1774aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1775 PPCODE:
1776{
1777 dREQ;
1778
1779 req->int2 = mode;
1780 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1781
1782 REQ_SEND;
1783}
1784
1785void
1786aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1787 PPCODE:
1788{
1789 dREQ;
1790
1791 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1792 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1793 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1794
1795 REQ_SEND;
1796}
1797
1798void
1799aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1800 PPCODE:
1801{
1802 dREQ;
1803
1804 req->type = EIO_READDIR;
1805 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1806
1807 if (flags & EIO_READDIR_DENTS)
1808 req->int1 |= EIO_READDIR_CUSTOM2;
1809
1810 req_set_path1 (req, pathname);
1811
1812 REQ_SEND;
1813}
1814
1815void
1816aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1817 PPCODE:
1818{
1819 dREQ;
1820
1821 req->type = EIO_MKDIR;
1822 req->int2 = mode;
1823 req_set_path1 (req, pathname);
1824
1825 REQ_SEND;
1826}
1827
1828void
1829aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1830 ALIAS:
1831 aio_unlink = EIO_UNLINK
1832 aio_rmdir = EIO_RMDIR
1833 aio_readdir = EIO_READDIR
1834 PPCODE:
999{ 1835{
1000 dREQ; 1836 dREQ;
1001 1837
1002 req->type = ix; 1838 req->type = ix;
1003 req->data = newSVsv (pathname); 1839 req_set_path1 (req, pathname);
1004 req->dataptr = SvPVbyte_nolen (req->data);
1005
1006 send_req (req);
1007}
1008 1840
1841 REQ_SEND;
1842}
1843
1009void 1844void
1010aio_link (oldpath,newpath,callback=&PL_sv_undef) 1845aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1011 SV * oldpath
1012 SV * newpath
1013 SV * callback
1014 ALIAS: 1846 ALIAS:
1015 aio_link = REQ_LINK 1847 aio_link = EIO_LINK
1016 aio_symlink = REQ_SYMLINK 1848 aio_symlink = EIO_SYMLINK
1017 aio_rename = REQ_RENAME 1849 aio_rename = EIO_RENAME
1018 CODE: 1850 PPCODE:
1019{ 1851{
1852 eio_wd wd2 = 0;
1020 dREQ; 1853 dREQ;
1021 1854
1022 req->type = ix; 1855 req->type = ix;
1023 req->fh = newSVsv (oldpath); 1856 req_set_path1 (req, oldpath);
1024 req->data2ptr = SvPVbyte_nolen (req->fh); 1857 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1025 req->data = newSVsv (newpath); 1858 req->int3 = (long)wd2;
1026 req->dataptr = SvPVbyte_nolen (req->data);
1027 1859
1028 send_req (req); 1860 REQ_SEND;
1029} 1861}
1862
1863void
1864aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1865 PPCODE:
1866{
1867 eio_wd wd2 = 0;
1868 dREQ;
1869
1870 req->type = EIO_RENAME;
1871 req_set_path1 (req, oldpath);
1872 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1873 req->int2 = flags;
1874 req->int3 = (long)wd2;
1875
1876 REQ_SEND;
1877}
1878
1879void
1880aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1881 PPCODE:
1882{
1883 dREQ;
1884
1885 req->type = EIO_MKNOD;
1886 req->int2 = (mode_t)mode;
1887 req->offs = dev;
1888 req_set_path1 (req, pathname);
1889
1890 REQ_SEND;
1891}
1892
1893void
1894aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1895 ALIAS:
1896 aio_mtouch = EIO_MTOUCH
1897 aio_msync = EIO_MSYNC
1898 PPCODE:
1899{
1900 STRLEN svlen;
1901 char *svptr = SvPVbyte (data, svlen);
1902 UV len = SvUV (length);
1903
1904 if (flags < 0)
1905 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1906
1907 if (offset < 0)
1908 offset += svlen;
1909
1910 if (offset < 0 || offset > svlen)
1911 croak ("offset outside of scalar");
1912
1913 if (!SvOK (length) || len + offset > svlen)
1914 len = svlen - offset;
1915
1916 {
1917 dREQ;
1918
1919 req->type = ix;
1920 req->sv2 = SvREFCNT_inc (data);
1921 req->ptr2 = (char *)svptr + offset;
1922 req->size = len;
1923 req->int1 = flags;
1924
1925 REQ_SEND;
1926 }
1927}
1928
1929void
1930aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1931 PPCODE:
1932{
1933 STRLEN svlen;
1934 char *svptr = SvPVbyte (data, svlen);
1935 UV len = SvUV (length);
1936
1937 if (offset < 0)
1938 offset += svlen;
1939
1940 if (offset < 0 || offset > svlen)
1941 croak ("offset outside of scalar");
1942
1943 if (!SvOK (length) || len + offset > svlen)
1944 len = svlen - offset;
1945
1946 {
1947 dREQ;
1948
1949 req->type = EIO_MLOCK;
1950 req->sv2 = SvREFCNT_inc (data);
1951 req->ptr2 = (char *)svptr + offset;
1952 req->size = len;
1953
1954 REQ_SEND;
1955 }
1956}
1957
1958void
1959aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1960 PPCODE:
1961{
1962 dREQ;
1963
1964 req->type = EIO_MLOCKALL;
1965 req->int1 = flags;
1966
1967 REQ_SEND;
1968}
1969
1970void
1971aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1972 PPCODE:
1973{
1974 int fd = s_fileno_croak (fh, 0);
1975 dREQ;
1976
1977 req->type = EIO_CUSTOM;
1978 req->sv1 = newSVsv (fh);
1979 req->int1 = fd;
1980
1981 req->feed = fiemap;
1982#if HAVE_FIEMAP
1983 /* keep our fingers crossed that the next two types are 64 bit */
1984 req->offs = start;
1985 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1986 req->int2 = flags;
1987 req->int3 = SvOK (count) ? SvIV (count) : -1;
1988#endif
1989
1990 REQ_SEND;
1991}
1992
1993void
1994aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1995 PPCODE:
1996{
1997 char *svptr = 0;
1998
1999 sv_clear_foreign (data);
2000
2001 if (length) /* known length, directly read into scalar */
2002 {
2003 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2004 svptr = sv_grow (data, length + 1);
2005 else if (SvCUR (data) < length)
2006 croak ("length outside of scalar, and cannot grow");
2007 else
2008 svptr = SvPVbyte_nolen (data);
2009 }
2010
2011 {
2012 dREQ;
2013
2014 req->type = EIO_SLURP;
2015 req_set_path1 (req, pathname);
2016 req->offs = offset;
2017 req->size = length;
2018 req->sv2 = SvREFCNT_inc (data);
2019 req->ptr2 = svptr;
2020
2021 if (!SvREADONLY (data))
2022 {
2023 SvREADONLY_on (data);
2024 req->flags |= FLAG_SV2_RO_OFF;
2025 }
2026
2027 REQ_SEND;
2028 }
2029}
2030
2031void
2032aio_busy (double delay, SV *callback = &PL_sv_undef)
2033 PPCODE:
2034{
2035 dREQ;
2036
2037 req->type = EIO_BUSY;
2038 req->nv1 = delay < 0. ? 0. : delay;
2039
2040 REQ_SEND;
2041}
2042
2043void
2044aio_group (SV *callback = &PL_sv_undef)
2045 PPCODE:
2046{
2047 dREQ;
2048
2049 req->type = EIO_GROUP;
2050
2051 PUTBACK;
2052 req_submit (req);
2053 SPAGAIN;
2054
2055 XPUSHs (req_sv (req, aio_grp_stash));
2056}
2057
2058void
2059aio_nop (SV *callback = &PL_sv_undef)
2060 ALIAS:
2061 aio_nop = EIO_NOP
2062 aio_sync = EIO_SYNC
2063 PPCODE:
2064{
2065 dREQ;
2066
2067 req->type = ix;
2068
2069 REQ_SEND;
2070}
2071
2072int
2073aioreq_pri (int pri = NO_INIT)
2074 CODE:
2075 RETVAL = next_pri;
2076 if (items > 0)
2077 {
2078 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2079 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2080 next_pri = pri;
2081 }
2082 OUTPUT:
2083 RETVAL
2084
2085void
2086aioreq_nice (int nice = 0)
2087 CODE:
2088 nice = next_pri - nice;
2089 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2090 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2091 next_pri = nice;
1030 2092
1031void 2093void
1032flush () 2094flush ()
1033 PROTOTYPE:
1034 CODE: 2095 CODE:
1035 while (nreqs) 2096 while (eio_nreqs ())
1036 { 2097 {
1037 poll_wait (); 2098 poll_wait ();
1038 poll_cb (); 2099 poll_cb ();
1039 } 2100 }
1040 2101
1041void 2102int
1042poll() 2103poll ()
1043 PROTOTYPE:
1044 CODE: 2104 CODE:
1045 if (nreqs)
1046 {
1047 poll_wait (); 2105 poll_wait ();
1048 poll_cb (); 2106 RETVAL = poll_cb ();
1049 }
1050
1051int
1052poll_fileno()
1053 PROTOTYPE:
1054 CODE:
1055 RETVAL = respipe [0];
1056 OUTPUT: 2107 OUTPUT:
1057 RETVAL 2108 RETVAL
1058 2109
1059int 2110int
2111poll_fileno ()
2112 CODE:
2113 RETVAL = s_epipe_fd (&respipe);
2114 OUTPUT:
2115 RETVAL
2116
2117int
1060poll_cb(...) 2118poll_cb (...)
1061 PROTOTYPE: 2119 PROTOTYPE:
1062 CODE: 2120 CODE:
1063 RETVAL = poll_cb (); 2121 RETVAL = poll_cb ();
1064 OUTPUT: 2122 OUTPUT:
1065 RETVAL 2123 RETVAL
1066 2124
1067void 2125void
1068poll_wait() 2126poll_wait ()
1069 PROTOTYPE:
1070 CODE: 2127 CODE:
1071 if (nreqs)
1072 poll_wait (); 2128 poll_wait ();
1073 2129
1074int 2130int
1075nreqs() 2131nreqs ()
1076 PROTOTYPE:
1077 CODE: 2132 CODE:
1078 RETVAL = nreqs; 2133 RETVAL = eio_nreqs ();
1079 OUTPUT: 2134 OUTPUT:
1080 RETVAL 2135 RETVAL
1081 2136
2137int
2138nready ()
2139 CODE:
2140 RETVAL = eio_nready ();
2141 OUTPUT:
2142 RETVAL
2143
2144int
2145npending ()
2146 CODE:
2147 RETVAL = eio_npending ();
2148 OUTPUT:
2149 RETVAL
2150
2151int
2152nthreads ()
2153 CODE:
2154 RETVAL = eio_nthreads ();
2155 OUTPUT:
2156 RETVAL
2157
2158int
2159fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2160 CODE:
2161 RETVAL = posix_fadvise (fh, offset, length, advice);
2162 OUTPUT:
2163 RETVAL
2164
2165IV
2166sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2167 CODE:
2168 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2169 OUTPUT:
2170 RETVAL
2171
2172void
2173mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2174 PPCODE:
2175 sv_clear_foreign (scalar);
2176{
2177 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2178 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2179 if (addr == (void *)-1)
2180 XSRETURN_NO;
2181
2182 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2183
2184 if (!(prot & PROT_WRITE))
2185 SvREADONLY_on (scalar);
2186
2187 XSRETURN_YES;
2188}
2189
2190void
2191munmap (SV *scalar)
2192 CODE:
2193 sv_clear_foreign (scalar);
2194
2195SV *
2196mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2197 CODE:
2198{
2199 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2200 void *new;
2201
2202 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2203 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2204
2205 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2206
2207 RETVAL = &PL_sv_no;
2208
2209 if (new != (void *)-1)
2210 {
2211 RETVAL = new == (void *)mg->mg_ptr
2212 ? newSVpvn ("0 but true", 10)
2213 : &PL_sv_yes;
2214
2215 mg->mg_ptr = (char *)new;
2216 mg->mg_obj = (SV *)new_length;
2217
2218 SvPVX (scalar) = mg->mg_ptr;
2219 SvCUR_set (scalar, new_length);
2220 }
2221}
2222 OUTPUT:
2223 RETVAL
2224
2225int
2226madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2227 ALIAS:
2228 mprotect = 1
2229 CODE:
2230{
2231 STRLEN svlen;
2232 void *addr = SvPVbyte (scalar, svlen);
2233 STRLEN len = SvUV (length);
2234
2235 if (offset < 0)
2236 offset += svlen;
2237
2238 if (offset < 0 || offset > svlen)
2239 croak ("offset outside of scalar");
2240
2241 if (!SvOK (length) || len + offset > svlen)
2242 len = svlen - offset;
2243
2244 addr = (void *)(((intptr_t)addr) + offset);
2245 eio_page_align (&addr, &len);
2246
2247 switch (ix)
2248 {
2249 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2250 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2251 }
2252}
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2258 CODE:
2259{
2260 STRLEN svlen;
2261 void *addr = SvPVbyte (scalar, svlen);
2262 size_t len = SvUV (length);
2263
2264 if (offset < 0)
2265 offset += svlen;
2266
2267 if (offset < 0 || offset > svlen)
2268 croak ("offset outside of scalar");
2269
2270 if (!SvOK (length) || len + offset > svlen)
2271 len = svlen - offset;
2272
2273 addr = (void *)(((intptr_t)addr) + offset);
2274 eio_page_align (&addr, &len);
2275#if _POSIX_MEMLOCK_RANGE
2276 RETVAL = munlock (addr, len);
2277#else
2278 RETVAL = EIO_ENOSYS ();
2279#endif
2280}
2281 OUTPUT:
2282 RETVAL
2283
2284int
2285mlockall (int flags)
2286 PROTOTYPE: $;
2287 CODE:
2288 RETVAL = eio_mlockall_sync (flags);
2289 OUTPUT:
2290 RETVAL
2291
2292int
2293munlockall ()
2294 CODE:
2295#if _POSIX_MEMLOCK
2296 munlockall ();
2297#else
2298 RETVAL = EIO_ENOSYS ();
2299#endif
2300 OUTPUT:
2301 RETVAL
2302
2303int
2304splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2305 CODE:
2306{
2307#if HAVE_LINUX_SPLICE
2308 loff_t off_in_, off_out_;
2309 RETVAL = splice (
2310 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2311 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2312 length, flags
2313 );
2314#else
2315 RETVAL = EIO_ENOSYS ();
2316#endif
2317}
2318 OUTPUT:
2319 RETVAL
2320
2321int
2322tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2323 CODE:
2324#if HAVE_LINUX_SPLICE
2325 RETVAL = tee (rfh, wfh, length, flags);
2326#else
2327 RETVAL = EIO_ENOSYS ();
2328#endif
2329 OUTPUT:
2330 RETVAL
2331
2332int
2333pipesize (aio_rfd rfh, int new_size = -1)
2334 PROTOTYPE: $;$
2335 CODE:
2336#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2337 if (new_size >= 0)
2338 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2339 else
2340 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2341#else
2342 errno = ENOSYS;
2343 RETVAL = -1;
2344#endif
2345 OUTPUT:
2346 RETVAL
2347
2348void
2349pipe2 (int flags = 0)
2350 PROTOTYPE: ;$
2351 PPCODE:
2352{
2353 int fd[2];
2354 int res;
2355
2356 if (flags)
2357#if HAVE_PIPE2
2358 res = pipe2 (fd, flags);
2359#else
2360 res = (errno = ENOSYS, -1);
2361#endif
2362 else
2363 res = pipe (fd);
2364
2365 if (!res)
2366 {
2367 EXTEND (SP, 2);
2368 PUSHs (newmortalFH (fd[0], O_RDONLY));
2369 PUSHs (newmortalFH (fd[1], O_WRONLY));
2370 }
2371}
2372
2373void
2374eventfd (unsigned int initval = 0, int flags = 0)
2375 PPCODE:
2376{
2377 int fd;
2378#if HAVE_EVENTFD
2379 fd = eventfd (initval, flags);
2380#else
2381 fd = (errno = ENOSYS, -1);
2382#endif
2383
2384 XPUSHs (newmortalFH (fd, O_RDWR));
2385}
2386
2387void
2388timerfd_create (int clockid, int flags = 0)
2389 PPCODE:
2390{
2391 int fd;
2392#if HAVE_TIMERFD
2393 fd = timerfd_create (clockid, flags);
2394#else
2395 fd = (errno = ENOSYS, -1);
2396#endif
2397
2398 XPUSHs (newmortalFH (fd, O_RDWR));
2399}
2400
2401void
2402timerfd_settime (SV *fh, int flags, NV interval, NV value)
2403 PPCODE:
2404{
2405 int fd = s_fileno_croak (fh, 0);
2406#if HAVE_TIMERFD
2407 int res;
2408 struct itimerspec its, ots;
2409
2410 ts_set (&its.it_interval, interval);
2411 ts_set (&its.it_value , value);
2412 res = timerfd_settime (fd, flags, &its, &ots);
2413
2414 if (!res)
2415 {
2416 EXTEND (SP, 2);
2417 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2418 PUSHs (newSVnv (ts_get (&ots.it_value)));
2419 }
2420#else
2421 errno = ENOSYS;
2422#endif
2423}
2424
2425void
2426timerfd_gettime (SV *fh)
2427 PPCODE:
2428{
2429 int fd = s_fileno_croak (fh, 0);
2430#if HAVE_TIMERFD
2431 int res;
2432 struct itimerspec ots;
2433 res = timerfd_gettime (fd, &ots);
2434
2435 if (!res)
2436 {
2437 EXTEND (SP, 2);
2438 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2439 PUSHs (newSVnv (ts_get (&ots.it_value)));
2440 }
2441#else
2442 errno = ENOSYS;
2443#endif
2444}
2445
2446UV
2447get_fdlimit ()
2448 CODE:
2449#if HAVE_RLIMITS
2450 struct rlimit rl;
2451 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2452 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2453#endif
2454 XSRETURN_UNDEF;
2455 OUTPUT:
2456 RETVAL
2457
2458void
2459min_fdlimit (UV limit = 0x7fffffffU)
2460 CODE:
2461{
2462#if HAVE_RLIMITS
2463 struct rlimit rl;
2464 rlim_t orig_rlim_max;
2465 UV bit;
2466
2467 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2468 goto fail;
2469
2470 if (rl.rlim_cur == RLIM_INFINITY)
2471 XSRETURN_YES;
2472
2473 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2474
2475 if (rl.rlim_cur < limit)
2476 {
2477 rl.rlim_cur = limit;
2478
2479 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2480 rl.rlim_max = rl.rlim_cur;
2481 }
2482
2483 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2484 XSRETURN_YES;
2485
2486 if (errno == EPERM)
2487 {
2488 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2489 /* our limit overflows a system-wide limit */
2490 /* try an adaptive algorithm, but do not lower the hardlimit */
2491 rl.rlim_max = 0;
2492 for (bit = 0x40000000U; bit; bit >>= 1)
2493 {
2494 rl.rlim_max |= bit;
2495 rl.rlim_cur = rl.rlim_max;
2496
2497 /* nevr decrease the hard limit */
2498 if (rl.rlim_max < orig_rlim_max)
2499 break;
2500
2501 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2502 rl.rlim_max &= ~bit; /* too high, remove bit again */
2503 }
2504
2505 /* now, raise the soft limit to the max permitted */
2506 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2507 {
2508 rl.rlim_cur = rl.rlim_max;
2509 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2510 errno = EPERM;
2511 }
2512 }
2513#endif
2514 fail:
2515 XSRETURN_UNDEF;
2516}
2517
2518void _on_next_submit (SV *cb)
2519 CODE:
2520 SvREFCNT_dec (on_next_submit);
2521 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2522
2523PROTOTYPES: DISABLE
2524
2525MODULE = IO::AIO PACKAGE = IO::AIO::WD
2526
2527BOOT:
2528{
2529 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2530 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2531}
2532
2533void
2534DESTROY (SV *self)
2535 CODE:
2536{
2537 aio_wd wd = SvAIO_WD (self);
2538#if HAVE_AT
2539 {
2540 SV *callback = &PL_sv_undef;
2541 dREQ; /* clobbers next_pri :/ */
2542 next_pri = req->pri; /* restore next_pri */
2543 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2544 req->type = EIO_WD_CLOSE;
2545 req->wd = wd;
2546 REQ_SEND;
2547 }
2548#else
2549 eio_wd_close_sync (wd);
2550#endif
2551}
2552
2553MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2554
2555void
2556cancel (aio_req_ornot req)
2557 CODE:
2558 eio_cancel (req);
2559
2560void
2561cb (aio_req_ornot req, SV *callback = NO_INIT)
2562 PPCODE:
2563{
2564 if (GIMME_V != G_VOID)
2565 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2566
2567 if (items > 1)
2568 {
2569 SV *cb_cv = get_cb (callback);
2570
2571 SvREFCNT_dec (req->callback);
2572 req->callback = SvREFCNT_inc (cb_cv);
2573 }
2574}
2575
2576MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2577
2578void
2579add (aio_req grp, ...)
2580 PPCODE:
2581{
2582 int i;
2583
2584 if (grp->int1 == 2)
2585 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2586
2587 for (i = 1; i < items; ++i )
2588 {
2589 aio_req req;
2590
2591 if (GIMME_V != G_VOID)
2592 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2593
2594 req = SvAIO_REQ (ST (i));
2595
2596 if (req)
2597 eio_grp_add (grp, req);
2598 }
2599}
2600
2601void
2602cancel_subs (aio_req_ornot req)
2603 CODE:
2604 req_cancel_subs (req);
2605
2606void
2607result (aio_req grp, ...)
2608 CODE:
2609{
2610 int i;
2611 AV *av;
2612
2613 grp->errorno = errno;
2614
2615 av = newAV ();
2616 av_extend (av, items - 1);
2617
2618 for (i = 1; i < items; ++i )
2619 av_push (av, newSVsv (ST (i)));
2620
2621 SvREFCNT_dec (grp->sv1);
2622 grp->sv1 = (SV *)av;
2623}
2624
2625void
2626errno (aio_req grp, int errorno = errno)
2627 CODE:
2628 grp->errorno = errorno;
2629
2630void
2631limit (aio_req grp, int limit)
2632 CODE:
2633 eio_grp_limit (grp, limit);
2634
2635void
2636feed (aio_req grp, SV *callback = &PL_sv_undef)
2637 CODE:
2638{
2639 SvREFCNT_dec (grp->sv2);
2640 grp->sv2 = newSVsv (callback);
2641 grp->feed = aio_grp_feed;
2642
2643 if (grp->int2 <= 0)
2644 grp->int2 = 2;
2645
2646 eio_grp_limit (grp, grp->int2);
2647}
2648

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