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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.270 by root, Thu Nov 29 21:51:22 2018 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#if !defined mg_findext
9 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
10#include <pthread.h> 11#endif
11 12
12#include <stddef.h> 13#include <stddef.h>
14#include <stdlib.h>
15#include <errno.h>
13#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
14#include <sys/stat.h> 18#include <sys/stat.h>
15#include <limits.h> 19#include <limits.h>
16#include <unistd.h>
17#include <fcntl.h> 20#include <fcntl.h>
18#include <signal.h>
19#include <sched.h> 21#include <sched.h>
20 22
21#if HAVE_SENDFILE 23/* the incompetent fool that created musl keeps __linux__, refuses
22# if __linux 24 * to implement any linux standard apis, and also has no way to test
25 * for his broken iplementation. don't complain to me if this fails
26 * 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 #undef utime
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
86 #include <sys/time.h>
23# include <sys/sendfile.h> 87 #include <sys/select.h>
24# elif __freebsd 88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "config.h"
110
111#if HAVE_SYS_MKDEV_H
25# include <sys/socket.h> 112# include <sys/mkdev.h>
113#elif HAVE_SYS_SYSMACROS_H
114# include <sys/sysmacros.h>
115#endif
116
117#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
26# include <sys/uio.h> 118# include <sys/mman.h>
27# elif __hpux 119#endif
28# include <sys/socket.h> 120
29# elif __solaris /* not yet */ 121#if HAVE_ST_XTIMENSEC
122# define ATIMENSEC PL_statcache.st_atimensec
123# define MTIMENSEC PL_statcache.st_mtimensec
124# define CTIMENSEC PL_statcache.st_ctimensec
125#elif HAVE_ST_XTIMESPEC
126# define ATIMENSEC PL_statcache.st_atim.tv_nsec
127# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
128# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
129#else
130# define ATIMENSEC 0
131# define MTIMENSEC 0
132# define CTIMENSEC 0
133#endif
134
135#if HAVE_ST_BIRTHTIMENSEC
136# define BTIMESEC PL_statcache.st_birthtime
137# define BTIMENSEC PL_statcache.st_birthtimensec
138#elif HAVE_ST_BIRTHTIMESPEC
139# define BTIMESEC PL_statcache.st_birthtim.tv_sec
140# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
141#else
142# define BTIMESEC 0
143# define BTIMENSEC 0
144#endif
145
146#if HAVE_ST_GEN
147# define ST_GEN PL_statcache.st_gen
148#else
149# define ST_GEN 0
150#endif
151
152#include "schmorp.h"
153
154#if HAVE_EVENTFD
30# include <sys/sendfile.h> 155# include <sys/eventfd.h>
156#endif
157
158#if HAVE_TIMERFD
159# include <sys/timerfd.h>
160#endif
161
162#if HAVE_RLIMITS
163 #include <sys/time.h>
164 #include <sys/resource.h>
165#endif
166
167typedef SV SV8; /* byte-sv, used for argument-checking */
168typedef int aio_rfd; /* read file desriptor */
169typedef int aio_wfd; /* write file descriptor */
170
171static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
172
173#define EIO_REQ_MEMBERS \
174 SV *callback; \
175 SV *sv1, *sv2; \
176 SV *sv3, *sv4; \
177 STRLEN stroffset; \
178 SV *self;
179
180#define EIO_NO_WRAPPERS 1
181
182#include "libeio/eio.h"
183
184static int req_invoke (eio_req *req);
185#define EIO_FINISH(req) req_invoke (req)
186static void req_destroy (eio_req *grp);
187#define EIO_DESTROY(req) req_destroy (req)
188
189#include "libeio/eio.c"
190
191#if !HAVE_POSIX_FADVISE
192# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
193#endif
194
195#if !HAVE_POSIX_MADVISE
196# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
197#endif
198
199#ifndef MAP_ANONYMOUS
200# ifdef MAP_ANON
201# define MAP_ANONYMOUS MAP_ANON
31# else 202# else
32# error sendfile support requested but not available 203# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
33# endif 204# endif
34#endif 205#endif
35 206
36#if __ia64 207#ifndef makedev
37# define STACKSIZE 65536 208# define makedev(maj,min) (((maj) << 8) | (min))
38#else
39# define STACKSIZE 8192
40#endif 209#endif
210#ifndef major
211# define major(dev) ((dev) >> 8)
212#endif
213#ifndef minor
214# define minor(dev) ((dev) & 0xff)
215#endif
41 216
42enum { 217/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
43 REQ_QUIT, 218#ifdef __sun
44 REQ_OPEN, REQ_CLOSE, 219# undef PAGESIZE
45 REQ_READ, REQ_WRITE, REQ_READAHEAD, 220#endif
46 REQ_SENDFILE, 221
47 REQ_STAT, REQ_LSTAT, REQ_FSTAT, 222#if PAGESIZE <= 0
48 REQ_FSYNC, REQ_FDATASYNC, 223# define PAGESIZE sysconf (_SC_PAGESIZE)
49 REQ_UNLINK, REQ_RMDIR, 224#endif
50 REQ_READDIR, 225
51 REQ_SYMLINK, 226/*****************************************************************************/
227
228#if !_POSIX_MAPPED_FILES
229# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
230# define munmap(addr,length) EIO_ENOSYS ()
231#endif
232
233#if !_POSIX_MEMORY_PROTECTION
234# define mprotect(addr,len,prot) EIO_ENOSYS ()
235#endif
236
237#if !MREMAP_MAYMOVE
238# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
239#endif
240
241#define FOREIGN_MAGIC PERL_MAGIC_ext
242
243static int ecb_cold
244mmap_free (pTHX_ SV *sv, MAGIC *mg)
245{
246 int old_errno = errno;
247 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
248 errno = old_errno;
249
250 mg->mg_obj = 0; /* just in case */
251
252 SvREADONLY_off (sv);
253
254 if (SvPVX (sv) != mg->mg_ptr)
255 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
256
257 SvCUR_set (sv, 0);
258 SvPVX (sv) = 0;
259 SvOK_off (sv);
260
261 return 0;
262}
263
264static MGVTBL mmap_vtbl = {
265 0, 0, 0, 0, mmap_free
52}; 266};
53 267
54typedef struct aio_cb { 268static int ecb_cold
55 struct aio_cb *volatile next; 269sysfree_free (pTHX_ SV *sv, MAGIC *mg)
56
57 int type;
58
59 /* should receive a cleanup, with unions */
60 int fd, fd2;
61 off_t offset;
62 size_t length;
63 ssize_t result;
64 mode_t mode; /* open */
65 int errorno;
66 SV *data, *callback;
67 SV *fh, *fh2;
68 void *dataptr, *data2ptr;
69 STRLEN dataoffset;
70
71 Stat_t *statdata;
72} aio_cb;
73
74typedef aio_cb *aio_req;
75
76static int started, wanted;
77static volatile int nreqs;
78static int max_outstanding = 1<<30;
79static int respipe [2];
80
81static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
82static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
83static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84
85static volatile aio_req reqs, reqe; /* queue start, queue end */
86static volatile aio_req ress, rese; /* queue start, queue end */
87
88static void free_req (aio_req req)
89{ 270{
90 if (req->data) 271 free (mg->mg_ptr);
91 SvREFCNT_dec (req->data); 272 mg->mg_obj = 0; /* just in case */
92 273
93 if (req->fh) 274 SvREADONLY_off (sv);
94 SvREFCNT_dec (req->fh);
95 275
96 if (req->fh2) 276 if (SvPVX (sv) != mg->mg_ptr)
97 SvREFCNT_dec (req->fh2); 277 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
98 278
99 if (req->statdata) 279 SvCUR_set (sv, 0);
100 Safefree (req->statdata); 280 SvPVX (sv) = 0;
281 SvOK_off (sv);
101 282
102 if (req->callback) 283 return 0;
103 SvREFCNT_dec (req->callback);
104
105 if (req->type == REQ_READDIR && req->result >= 0)
106 free (req->data2ptr);
107
108 Safefree (req);
109} 284}
110 285
286static MGVTBL sysfree_vtbl = {
287 0, 0, 0, 0, sysfree_free
288};
289
290/*****************************************************************************/
291
292/* helper: set scalar to foreign ptr with custom free */
111static void 293static void
112poll_wait () 294sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
113{ 295{
114 if (nreqs && !ress) 296 sv_force_normal (sv);
115 {
116 fd_set rfd;
117 FD_ZERO(&rfd);
118 FD_SET(respipe [0], &rfd);
119 297
120 select (respipe [0] + 1, &rfd, 0, 0, 0); 298 /* we store the length in mg_obj, as namlen is I32 :/ */
121 } 299 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
122} 300 ->mg_obj = (SV *)length;
123 301
302 SvUPGRADE (sv, SVt_PV); /* nop... */
303
304 if (SvLEN (sv))
305 Safefree (SvPVX (sv));
306
307 SvPVX (sv) = (char *)addr;
308 SvCUR_set (sv, length);
309 SvLEN_set (sv, 0);
310 SvPOK_only (sv);
311}
312
124static int 313static void
125poll_cb () 314sv_clear_foreign (SV *sv)
126{ 315{
127 dSP; 316 /* todo: iterate over magic and only free ours, but of course */
317 /* the perl5porters will call that (correct) behaviour buggy */
318 sv_unmagic (sv, FOREIGN_MAGIC);
319}
320
321/*****************************************************************************/
322
323/* defines all sorts of constants to 0 unless they are already defined */
324/* also provides const_iv_ and const_niv_ macros for them */
325#include "def0.h"
326
327/*****************************************************************************/
328
329static void
330fiemap (eio_req *req)
331{
332 req->result = -1;
333
334#if HAVE_FIEMAP
335 /* assume some c99 */
336 struct fiemap *fiemap = 0;
337 size_t end_offset;
338 int count = req->int3;
339
340 req->flags |= EIO_FLAG_PTR1_FREE;
341
342 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
343 /* increase in 3.5kb steps */
344 if (count < 0)
128 int count = 0; 345 count = 8;
129 int do_croak = 0; 346
130 aio_req req; 347 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
348 errno = ENOMEM;
349 if (!fiemap)
350 return;
351
352 req->ptr1 = fiemap;
353
354 fiemap->fm_start = req->offs;
355 fiemap->fm_length = req->size;
356 fiemap->fm_flags = req->int2;
357 fiemap->fm_extent_count = count;
358
359 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
360 return;
361
362 if (req->int3 >= 0 /* not autosizing */
363 || !fiemap->fm_mapped_extents /* no more extents */
364 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
365 goto done;
366
367 /* else we have to loop -
368 * it would be tempting (actually I tried that first) to just query the
369 * number of extents needed, but linux often feels like not returning all
370 * extents, without telling us it left any out. this complicates
371 * this quite a bit.
372 */
373
374 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
131 375
132 for (;;) 376 for (;;)
133 { 377 {
134 pthread_mutex_lock (&reslock); 378 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
135 req = ress; 379 char scratch[3072];
380 struct fiemap *incmap = (struct fiemap *)scratch;
136 381
382 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
383 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
384 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
385 incmap->fm_flags = fiemap->fm_flags;
386 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
387
388 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
389 return;
390
391 if (!incmap->fm_mapped_extents)
392 goto done;
393
394 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
395 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
396 errno = ENOMEM;
137 if (req) 397 if (!fiemap)
398 return;
399
400 req->ptr1 = fiemap;
401
402 for (count = 0; count < incmap->fm_mapped_extents; ++count)
138 { 403 {
139 ress = req->next; 404 struct fiemap_extent *e = incmap->fm_extents + count;
140 405
141 if (!ress) 406 if (e->fe_logical + e->fe_length >= end_offset)
142 { 407 goto done;
143 /* read any signals sent by the worker threads */
144 char buf [32];
145 while (read (respipe [0], buf, 32) == 32)
146 ;
147 408
148 rese = 0; 409 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
149 }
150 }
151 410
152 pthread_mutex_unlock (&reslock); 411 if (e->fe_flags & FIEMAP_EXTENT_LAST)
412 goto done;
153 413
154 if (!req)
155 break;
156
157 nreqs--;
158
159 if (req->type == REQ_QUIT)
160 started--;
161 else
162 {
163 int errorno = errno;
164 errno = req->errorno;
165
166 if (req->type == REQ_READ)
167 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170 SvREADONLY_off (req->data);
171
172 if (req->statdata)
173 {
174 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175 PL_laststatval = req->result;
176 PL_statcache = *(req->statdata);
177 }
178
179 ENTER;
180 PUSHMARK (SP);
181
182 if (req->type == REQ_READDIR)
183 {
184 SV *rv = &PL_sv_undef;
185
186 if (req->result >= 0)
187 {
188 char *buf = req->data2ptr;
189 AV *av = newAV ();
190
191 while (req->result)
192 {
193 SV *sv = newSVpv (buf, 0);
194
195 av_push (av, sv);
196 buf += SvCUR (sv) + 1;
197 req->result--;
198 }
199
200 rv = sv_2mortal (newRV_noinc ((SV *)av));
201 }
202
203 XPUSHs (rv);
204 }
205 else
206 {
207 XPUSHs (sv_2mortal (newSViv (req->result)));
208
209 if (req->type == REQ_OPEN)
210 {
211 /* convert fd to fh */
212 SV *fh;
213
214 PUTBACK;
215 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216 SPAGAIN;
217
218 fh = SvREFCNT_inc (POPs);
219
220 PUSHMARK (SP);
221 XPUSHs (sv_2mortal (fh));
222 }
223 }
224
225 if (SvOK (req->callback))
226 {
227 PUTBACK;
228 call_sv (req->callback, G_VOID | G_EVAL);
229 SPAGAIN;
230
231 if (SvTRUE (ERRSV))
232 {
233 free_req (req);
234 croak (0);
235 }
236 }
237
238 LEAVE;
239
240 errno = errorno;
241 count++;
242 }
243
244 free_req (req);
245 }
246
247 return count;
248}
249
250static void *aio_proc(void *arg);
251
252static void
253start_thread (void)
254{
255 sigset_t fullsigset, oldsigset;
256 pthread_t tid;
257 pthread_attr_t attr;
258
259 pthread_attr_init (&attr);
260 pthread_attr_setstacksize (&attr, STACKSIZE);
261 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262
263 sigfillset (&fullsigset);
264 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265
266 if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
267 started++;
268
269 sigprocmask (SIG_SETMASK, &oldsigset, 0);
270}
271
272static void
273send_req (aio_req req)
274{
275 while (started < wanted && nreqs >= started)
276 start_thread ();
277
278 nreqs++;
279
280 pthread_mutex_lock (&reqlock);
281
282 req->next = 0;
283
284 if (reqe)
285 {
286 reqe->next = req;
287 reqe = req;
288 }
289 else
290 reqe = reqs = req;
291
292 pthread_cond_signal (&reqwait);
293 pthread_mutex_unlock (&reqlock);
294
295 if (nreqs > max_outstanding)
296 for (;;)
297 {
298 poll_cb ();
299
300 if (nreqs <= max_outstanding)
301 break;
302
303 poll_wait ();
304 }
305}
306
307static void
308end_thread (void)
309{
310 aio_req req;
311 Newz (0, req, 1, aio_cb);
312 req->type = REQ_QUIT;
313
314 send_req (req);
315}
316
317static void min_parallel (int nthreads)
318{
319 if (wanted < nthreads)
320 wanted = nthreads;
321}
322
323static void max_parallel (int nthreads)
324{
325 int cur = started;
326
327 if (wanted > nthreads)
328 wanted = nthreads;
329
330 while (cur > wanted)
331 {
332 end_thread ();
333 cur--;
334 }
335
336 while (started > wanted)
337 {
338 poll_wait ();
339 poll_cb ();
340 }
341}
342
343static void create_pipe ()
344{
345 if (pipe (respipe))
346 croak ("unable to initialize result pipe");
347
348 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
349 croak ("cannot set result pipe to nonblocking mode");
350
351 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
352 croak ("cannot set result pipe to nonblocking mode");
353}
354
355/*****************************************************************************/
356/* work around various missing functions */
357
358#if !HAVE_PREADWRITE
359# define pread aio_pread
360# define pwrite aio_pwrite
361
362/*
363 * make our pread/pwrite safe against themselves, but not against
364 * normal read/write by using a mutex. slows down execution a lot,
365 * but that's your problem, not mine.
366 */
367static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368
369static ssize_t
370pread (int fd, void *buf, size_t count, off_t offset)
371{
372 ssize_t res;
373 off_t ooffset;
374
375 pthread_mutex_lock (&preadwritelock);
376 ooffset = lseek (fd, 0, SEEK_CUR);
377 lseek (fd, offset, SEEK_SET);
378 res = read (fd, buf, count);
379 lseek (fd, ooffset, SEEK_SET);
380 pthread_mutex_unlock (&preadwritelock);
381
382 return res;
383}
384
385static ssize_t
386pwrite (int fd, void *buf, size_t count, off_t offset)
387{
388 ssize_t res;
389 off_t ooffset;
390
391 pthread_mutex_lock (&preadwritelock);
392 ooffset = lseek (fd, 0, SEEK_CUR);
393 lseek (fd, offset, SEEK_SET);
394 res = write (fd, buf, count);
395 lseek (fd, offset, SEEK_SET);
396 pthread_mutex_unlock (&preadwritelock);
397
398 return res;
399}
400#endif
401
402#if !HAVE_FDATASYNC
403# define fdatasync fsync
404#endif
405
406#if !HAVE_READAHEAD
407# define readahead aio_readahead
408
409static ssize_t
410readahead (int fd, off_t offset, size_t count)
411{
412 char readahead_buf[4096];
413
414 while (count > 0)
415 {
416 size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
417
418 pread (fd, readahead_buf, len, offset);
419 offset += len;
420 count -= len;
421 }
422
423 errno = 0;
424}
425#endif
426
427#if !HAVE_READDIR_R
428# define readdir_r aio_readdir_r
429
430static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431
432static int
433readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434{
435 struct dirent *e;
436 int errorno;
437
438 pthread_mutex_lock (&readdirlock);
439
440 e = readdir (dirp);
441 errorno = errno;
442
443 if (e)
444 {
445 *res = ent;
446 strcpy (ent->d_name, e->d_name);
447 }
448 else
449 *res = 0;
450
451 pthread_mutex_unlock (&readdirlock);
452
453 errno = errorno;
454 return e ? 0 : -1;
455}
456#endif
457
458/* sendfile always needs emulation */
459static ssize_t
460sendfile_ (int ofd, int ifd, off_t offset, size_t count)
461{
462 ssize_t res;
463
464 if (!count)
465 return 0;
466
467#if HAVE_SENDFILE
468# if __linux
469 res = sendfile (ofd, ifd, &offset, count);
470
471# elif __freebsd
472 /*
473 * Of course, the freebsd sendfile is a dire hack with no thoughts
474 * wasted on making it similar to other I/O functions.
475 */
476 {
477 off_t sbytes;
478 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479
480 if (res < 0 && sbytes)
481 /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
482 res = sbytes;
483 }
484
485# elif __hpux
486 res = sendfile (ofd, ifd, offset, count, 0, 0);
487
488# elif __solaris
489 {
490 struct sendfilevec vec;
491 size_t sbytes;
492
493 vec.sfv_fd = ifd;
494 vec.sfv_flag = 0;
495 vec.sfv_off = offset;
496 vec.sfv_len = count;
497
498 res = sendfilev (ofd, &vec, 1, &sbytes);
499
500 if (res < 0 && sbytes)
501 res = sbytes;
502 }
503
504# else
505 res = -1;
506 errno = ENOSYS;
507# endif
508#endif
509
510 if (res < 0
511 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512#if __solaris
513 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
514#endif
515 )
516 )
517 {
518 /* emulate sendfile. this is a major pain in the ass */
519 char buf[4096];
520 res = 0;
521
522 for (;;)
523 {
524 ssize_t cnt;
525
526 cnt = pread (ifd, buf, 4096, offset);
527
528 if (cnt <= 0)
529 {
530 if (cnt && !res) res = -1;
531 break;
532 }
533
534 cnt = write (ofd, buf, cnt);
535
536 if (cnt <= 0)
537 {
538 if (cnt && !res) res = -1;
539 break;
540 }
541
542 offset += cnt;
543 res += cnt;
544 } 414 }
545 } 415 }
546 416
547 return res; 417done:
548} 418 req->result = 0;
549 419
550/* read a full directory */ 420#else
421 errno = ENOSYS;
422#endif
423}
424
425/*****************************************************************************/
426
427static int close_fd; /* dummy fd to close fds via dup2 */
428
429enum {
430 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
431};
432
433typedef eio_req *aio_req;
434typedef eio_req *aio_req_ornot;
435typedef eio_wd aio_wd;
436
437static SV *on_next_submit;
438static int next_pri = EIO_PRI_DEFAULT;
439static int max_outstanding;
440
441static s_epipe respipe;
442
443static void req_destroy (aio_req req);
444static void req_cancel (aio_req req);
445
446static void
447want_poll (void)
448{
449 /* write a dummy byte to the pipe so fh becomes ready */
450 s_epipe_signal (&respipe);
451}
452
453static void
454done_poll (void)
455{
456 /* read any signals sent by the worker threads */
457 s_epipe_drain (&respipe);
458}
459
460/* must be called at most once */
461static SV *
462req_sv (aio_req req, HV *stash)
463{
464 if (!req->self)
465 {
466 req->self = (SV *)newHV ();
467 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
468 }
469
470 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
471}
472
473static SV *
474newSVaio_wd (aio_wd wd)
475{
476 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
477}
478
479static aio_req
480SvAIO_REQ (SV *sv)
481{
482 MAGIC *mg;
483
484 if (!SvROK (sv)
485 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
486 || (SvSTASH (SvRV (sv)) != aio_grp_stash
487 && SvSTASH (SvRV (sv)) != aio_req_stash
488 && !sv_derived_from (sv, "IO::AIO::REQ")))
489 croak ("object of class IO::AIO::REQ expected");
490
491 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
492
493 return mg ? (aio_req)mg->mg_ptr : 0;
494}
495
496static aio_wd
497SvAIO_WD (SV *sv)
498{
499 if (!SvROK (sv)
500 || SvTYPE (SvRV (sv)) != SVt_PVMG
501 || SvSTASH (SvRV (sv)) != aio_wd_stash)
502 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
503
504 return (aio_wd)(long)SvIVX (SvRV (sv));
505}
506
507static SV *
508newmortalFH (int fd, int flags)
509{
510 if (fd < 0)
511 return &PL_sv_undef;
512
513 GV *gv = (GV *)sv_newmortal ();
514 char sym[64];
515 int symlen;
516
517 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
518 gv_init (gv, aio_stash, sym, symlen, 0);
519
520 symlen = snprintf (
521 sym,
522 sizeof (sym),
523 "%s&=%d",
524 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525 fd
526 );
527
528 return do_open (gv, sym, symlen, 0, 0, 0, 0)
529 ? (SV *)gv : &PL_sv_undef;
530}
531
532static void
533aio_grp_feed (aio_req grp)
534{
535 if (grp->sv2 && SvOK (grp->sv2))
536 {
537 dSP;
538
539 ENTER;
540 SAVETMPS;
541 PUSHMARK (SP);
542 XPUSHs (req_sv (grp, aio_grp_stash));
543 PUTBACK;
544 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
545 SPAGAIN;
546 FREETMPS;
547 LEAVE;
548 }
549}
550
551static void
552req_submit (eio_req *req)
553{
554 eio_submit (req);
555
556 if (expect_false (on_next_submit))
557 {
558 dSP;
559 SV *cb = sv_2mortal (on_next_submit);
560
561 on_next_submit = 0;
562
563 PUSHMARK (SP);
564 PUTBACK;
565 call_sv (cb, G_DISCARD | G_EVAL);
566 }
567}
568
551static int 569static int
552scandir_ (const char *path, void **namesp) 570req_invoke (eio_req *req)
553{ 571{
554 DIR *dirp = opendir (path); 572 if (req->flags & FLAG_SV2_RO_OFF)
555 union 573 SvREADONLY_off (req->sv2);
556 {
557 struct dirent d;
558 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
559 } u;
560 struct dirent *entp;
561 char *name, *names;
562 int memlen = 4096;
563 int memofs = 0;
564 int res = 0;
565 int errorno;
566 574
567 if (!dirp) 575 if (!EIO_CANCELLED (req) && req->callback)
568 return -1;
569
570 names = malloc (memlen);
571
572 for (;;)
573 { 576 {
574 errno = 0, readdir_r (dirp, &u.d, &entp); 577 dSP;
578 static SV *sv_result_cache; /* caches the result integer SV */
579 SV *sv_result;
575 580
576 if (!entp) 581 ENTER;
577 break; 582 SAVETMPS;
583 PUSHMARK (SP);
584 EXTEND (SP, 1);
578 585
579 name = entp->d_name; 586 /* do not recreate the result IV from scratch each time */
580 587 if (expect_true (sv_result_cache))
581 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
582 { 588 {
583 int len = strlen (name) + 1; 589 sv_result = sv_result_cache; sv_result_cache = 0;
584 590 SvIV_set (sv_result, req->result);
585 res++; 591 SvIOK_only (sv_result);
586
587 while (memofs + len > memlen)
588 {
589 memlen *= 2;
590 names = realloc (names, memlen);
591 if (!names)
592 break;
593 }
594
595 memcpy (names + memofs, name, len);
596 memofs += len;
597 }
598 }
599
600 errorno = errno;
601 closedir (dirp);
602
603 if (errorno)
604 {
605 free (names);
606 errno = errorno;
607 res = -1;
608 }
609
610 *namesp = (void *)names;
611 return res;
612}
613
614/*****************************************************************************/
615
616static void *
617aio_proc (void *thr_arg)
618{
619 aio_req req;
620 int type;
621
622 do
623 {
624 pthread_mutex_lock (&reqlock);
625
626 for (;;)
627 {
628 req = reqs;
629
630 if (reqs)
631 {
632 reqs = reqs->next;
633 if (!reqs) reqe = 0;
634 }
635
636 if (req)
637 break;
638
639 pthread_cond_wait (&reqwait, &reqlock);
640 }
641
642 pthread_mutex_unlock (&reqlock);
643
644 errno = 0; /* strictly unnecessary */
645
646 type = req->type;
647
648 switch (type)
649 {
650 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
651 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
652
653 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
654 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
655
656 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659
660 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661 case REQ_CLOSE: req->result = close (req->fd); break;
662 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
664 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665
666 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667 case REQ_FSYNC: req->result = fsync (req->fd); break;
668 case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
669
670 case REQ_QUIT:
671 break;
672
673 default:
674 req->result = ENOSYS;
675 break;
676 }
677
678 req->errorno = errno;
679
680 pthread_mutex_lock (&reslock);
681
682 req->next = 0;
683
684 if (rese)
685 {
686 rese->next = req;
687 rese = req;
688 } 592 }
689 else 593 else
690 { 594 {
691 rese = ress = req; 595 sv_result = newSViv (req->result);
692 596 SvREADONLY_on (sv_result);
693 /* write a dummy byte to the pipe so fh becomes ready */
694 write (respipe [1], &respipe, 1);
695 } 597 }
696 598
697 pthread_mutex_unlock (&reslock); 599 switch (req->type)
600 {
601 case EIO_WD_OPEN:
602 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
603 break;
604
605 case EIO_READDIR:
606 {
607 SV *rv = &PL_sv_undef;
608
609 if (req->result >= 0)
610 {
611 int i;
612 char *names = (char *)req->ptr2;
613 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
614 AV *av = newAV ();
615
616 av_extend (av, req->result - 1);
617
618 for (i = 0; i < req->result; ++i)
619 {
620 if (req->int1 & EIO_READDIR_DENTS)
621 {
622 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
623
624 if (req->int1 & EIO_READDIR_CUSTOM2)
625 {
626 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
627 AV *avent = newAV ();
628
629 av_extend (avent, 2);
630
631 if (!sv_type [ent->type])
632 {
633 sv_type [ent->type] = newSViv (ent->type);
634 SvREADONLY_on (sv_type [ent->type]);
635 }
636
637 av_store (avent, 0, namesv);
638 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
639 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
640
641 av_store (av, i, newRV_noinc ((SV *)avent));
642 }
643 else
644 av_store (av, i, namesv);
645
646 ++ent;
647 }
648 else
649 {
650 SV *name = newSVpv (names, 0);
651 av_store (av, i, name);
652 names += SvCUR (name) + 1;
653 }
654 }
655
656 rv = sv_2mortal (newRV_noinc ((SV *)av));
657 }
658
659 PUSHs (rv);
660
661 if (req->int1 & EIO_READDIR_CUSTOM1)
662 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
663 }
664 break;
665
666 case EIO_OPEN:
667 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
668 break;
669
670 case EIO_STATVFS:
671 case EIO_FSTATVFS:
672 {
673 SV *rv = &PL_sv_undef;
674
675#ifndef _WIN32
676 if (req->result >= 0)
677 {
678 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
679 HV *hv = newHV ();
680 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
681 * chooses to make it a struct.
682 */
683 unsigned long fsid = 0;
684 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
685
686 rv = sv_2mortal (newRV_noinc ((SV *)hv));
687
688 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
689 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
690 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
691 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
692 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
693 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
694 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
695 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
696 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
697 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
698 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
699 }
700#endif
701
702 PUSHs (rv);
703 }
704
705 break;
706
707 case EIO_GROUP:
708 req->int1 = 2; /* mark group as finished */
709
710 if (req->sv1)
711 {
712 int i;
713 AV *av = (AV *)req->sv1;
714
715 EXTEND (SP, AvFILL (av) + 1);
716 for (i = 0; i <= AvFILL (av); ++i)
717 PUSHs (*av_fetch (av, i, 0));
718 }
719 break;
720
721 case EIO_NOP:
722 case EIO_BUSY:
723 break;
724
725 case EIO_READLINK:
726 case EIO_REALPATH:
727 if (req->result > 0)
728 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
729 break;
730
731 case EIO_STAT:
732 case EIO_LSTAT:
733 case EIO_FSTAT:
734 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
735
736 if (!(PL_laststatval = req->result))
737 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
738 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
739
740 PUSHs (sv_result);
741 break;
742
743 case EIO_SEEK:
744 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
745 break;
746
747 case EIO_READ:
748 {
749 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
750 *SvEND (req->sv2) = 0;
751 SvPOK_only (req->sv2);
752 SvSETMAGIC (req->sv2);
753 PUSHs (sv_result);
754 }
755 break;
756
757 case EIO_SLURP:
758 {
759 if (req->result >= 0)
760 {
761 /* if length was originally not known, we steal the malloc'ed memory */
762 if (req->flags & EIO_FLAG_PTR2_FREE)
763 {
764 req->flags &= ~EIO_FLAG_PTR2_FREE;
765 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
766 }
767 else
768 {
769 SvCUR_set (req->sv2, req->result);
770 *SvEND (req->sv2) = 0;
771 SvPOK_only (req->sv2);
772 }
773
774 SvSETMAGIC (req->sv2);
775 }
776
777 PUSHs (sv_result);
778 }
779 break;
780
781 case EIO_CUSTOM:
782 if (req->feed == fiemap)
783 {
784#if HAVE_FIEMAP
785 if (!req->result)
786 {
787 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
788
789 if (fiemap->fm_extent_count)
790 {
791 AV *av = newAV ();
792 int i;
793
794 while (fiemap->fm_mapped_extents)
795 {
796 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
797 AV *ext_av = newAV ();
798
799 av_store (ext_av, 3, newSVuv (extent->fe_flags));
800 av_store (ext_av, 2, newSVval64 (extent->fe_length));
801 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
802 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
803
804 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
805 }
806
807 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
808 }
809 else
810 {
811 SvIV_set (sv_result, fiemap->fm_mapped_extents);
812 PUSHs (sv_result);
813 }
814 }
815#endif
816 }
817 else
818 PUSHs (sv_result);
819 break;
820
821 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
822 if (req->result > 0)
823 SvIV_set (sv_result, 0);
824 /* FALLTHROUGH */
825
826 default:
827 PUSHs (sv_result);
828 break;
829 }
830
831 errno = req->errorno;
832
833 PUTBACK;
834 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
835 SPAGAIN;
836
837 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
838 SvREFCNT_dec (sv_result);
839 else
840 sv_result_cache = sv_result;
841
842 FREETMPS;
843 LEAVE;
844
845 PUTBACK;
698 } 846 }
699 while (type != REQ_QUIT);
700 847
848 return !!SvTRUE (ERRSV);
849}
850
851static void
852req_destroy (aio_req req)
853{
854 if (req->self)
855 {
856 sv_unmagic (req->self, PERL_MAGIC_ext);
857 SvREFCNT_dec (req->self);
858 }
859
860 SvREFCNT_dec (req->sv1);
861 SvREFCNT_dec (req->sv2);
862 SvREFCNT_dec (req->sv3);
863 SvREFCNT_dec (req->sv4);
864 SvREFCNT_dec (req->callback);
865
866 free (req);
867}
868
869static void
870req_cancel_subs (aio_req grp)
871{
872 if (grp->type != EIO_GROUP)
701 return 0; 873 return;
874
875 SvREFCNT_dec (grp->sv2);
876 grp->sv2 = 0;
877
878 eio_grp_cancel (grp);
879}
880
881static void ecb_cold
882create_respipe (void)
883{
884 if (s_epipe_renew (&respipe))
885 croak ("IO::AIO: unable to initialize result pipe");
886}
887
888static void
889poll_wait (void)
890{
891 while (eio_nreqs ())
892 {
893 int size;
894
895 X_LOCK (EIO_POOL->reslock);
896 size = EIO_POOL->res_queue.size;
897 X_UNLOCK (EIO_POOL->reslock);
898
899 if (size)
900 return;
901
902 etp_maybe_start_thread (EIO_POOL);
903
904 s_epipe_wait (&respipe);
905 }
906}
907
908static int
909poll_cb (void)
910{
911 for (;;)
912 {
913 int res = eio_poll ();
914
915 if (res > 0)
916 croak (0);
917
918 if (!max_outstanding || max_outstanding > eio_nreqs ())
919 return res;
920
921 poll_wait ();
922 }
923}
924
925static void ecb_cold
926reinit (void)
927{
928 create_respipe ();
929
930 if (eio_init (want_poll, done_poll) < 0)
931 croak ("IO::AIO: unable to initialise eio library");
702} 932}
703 933
704/*****************************************************************************/ 934/*****************************************************************************/
705 935
706static void atfork_prepare (void) 936static SV *
937get_cb (SV *cb_sv)
707{ 938{
708 pthread_mutex_lock (&reqlock); 939 SvGETMAGIC (cb_sv);
709 pthread_mutex_lock (&reslock); 940 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
710#if !HAVE_PREADWRITE
711 pthread_mutex_lock (&preadwritelock);
712#endif
713#if !HAVE_READDIR_R
714 pthread_mutex_lock (&readdirlock);
715#endif
716} 941}
717 942
718static void atfork_parent (void) 943static aio_req ecb_noinline
944dreq (SV *callback)
719{ 945{
720#if !HAVE_READDIR_R 946 SV *cb_cv;
721 pthread_mutex_unlock (&readdirlock);
722#endif
723#if !HAVE_PREADWRITE
724 pthread_mutex_unlock (&preadwritelock);
725#endif
726 pthread_mutex_unlock (&reslock);
727 pthread_mutex_unlock (&reqlock);
728}
729
730static void atfork_child (void)
731{
732 aio_req prv; 947 aio_req req;
948 int req_pri = next_pri;
949 next_pri = EIO_PRI_DEFAULT;
733 950
734 started = 0; 951 cb_cv = get_cb (callback);
735 952
736 while (reqs) 953 req = calloc (sizeof (*req), 1);
954 if (!req)
955 croak ("out of memory during eio_req allocation");
956
957 req->callback = SvREFCNT_inc (cb_cv);
958 req->pri = req_pri;
959
960 return req;
961}
962
963#define dREQ \
964 aio_req req = dreq (callback); \
965
966#define REQ_SEND \
967 PUTBACK; \
968 req_submit (req); \
969 SPAGAIN; \
970 \
971 if (GIMME_V != G_VOID) \
972 XPUSHs (req_sv (req, aio_req_stash));
973
974ecb_inline void
975req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
976{
977 if (expect_false (SvROK (path)))
737 { 978 {
738 prv = reqs; 979 SV *rv = SvRV (path);
739 reqs = prv->next; 980 SV *wdob;
740 free_req (prv); 981
982 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
983 {
984 path = AvARRAY (rv)[1];
985 wdob = AvARRAY (rv)[0];
986
987 if (SvOK (wdob))
988 {
989 *wd = SvAIO_WD (wdob);
990 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
991 }
992 else
993 *wd = EIO_INVALID_WD;
994 }
995 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
996 {
997 *wd = (aio_wd)(long)SvIVX (rv);
998 *wdsv = SvREFCNT_inc_NN (rv);
999 *ptr = ".";
1000 return; /* path set to "." */
1001 }
1002 else
1003 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
741 } 1004 }
742 1005
743 reqs = reqe = 0; 1006 *pathsv = newSVsv (path);
744 1007 *ptr = SvPVbyte_nolen (*pathsv);
745 while (ress) 1008}
1009
1010static void ecb_noinline
1011req_set_path1 (aio_req req, SV *path)
1012{
1013 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1014}
1015
1016static void ecb_noinline
1017req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1018{
1019 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1020
1021 switch (SvTYPE (rv))
746 { 1022 {
747 prv = ress; 1023 case SVt_PVIO:
748 ress = prv->next; 1024 case SVt_PVLV:
749 free_req (prv); 1025 case SVt_PVGV:
1026 req->type = type_fh;
1027 req->sv1 = newSVsv (fh_or_path);
1028 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1029 break;
1030
1031 default:
1032 req->type = type_path;
1033 req_set_path1 (req, fh_or_path);
1034 break;
750 } 1035 }
751
752 ress = rese = 0;
753
754 close (respipe [0]);
755 close (respipe [1]);
756 create_pipe ();
757
758 atfork_parent ();
759} 1036}
760 1037
761#define dREQ \ 1038/*****************************************************************************/
762 aio_req req; \ 1039
763 \ 1040static void
764 if (SvOK (callback) && !SvROK (callback)) \ 1041ts_set (struct timespec *ts, NV value)
765 croak ("clalback must be undef or of reference type"); \ 1042{
766 \ 1043 ts->tv_sec = value;
767 Newz (0, req, 1, aio_cb); \ 1044 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
768 if (!req) \ 1045}
769 croak ("out of memory during aio_req allocation"); \ 1046
770 \ 1047static NV
771 req->callback = newSVsv (callback); 1048ts_get (const struct timespec *ts)
772 1049{
1050 return ts->tv_sec + ts->tv_nsec * 1e-9;
1051}
1052
1053/*****************************************************************************/
1054
1055XS(boot_IO__AIO) ecb_cold;
1056
773MODULE = IO::AIO PACKAGE = IO::AIO 1057MODULE = IO::AIO PACKAGE = IO::AIO
774 1058
775PROTOTYPES: ENABLE 1059PROTOTYPES: ENABLE
776 1060
777BOOT: 1061BOOT:
778{ 1062{
779 create_pipe (); 1063 static const struct {
780 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1064 const char *name;
781} 1065 IV iv;
1066 } *civ, const_iv[] = {
1067# define const_niv(name, value) { # name, (IV) value },
1068# define const_iv(name) { # name, (IV) name },
1069# define const_eio(name) { # name, (IV) EIO_ ## name },
782 1070
1071 /* you have to re-run ./gendef0 after adding/removing any constants here */
1072 /* the first block can be undef if missing */
1073 const_iv (ENOSYS)
1074 const_iv (EXDEV)
1075 const_iv (EBADR)
1076
1077 /* for lseek */
1078 const_iv (SEEK_DATA)
1079 const_iv (SEEK_HOLE)
1080
1081 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1082 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1083 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1084 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1085 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1086 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1087
1088 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1089 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1090 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1091 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1092 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1093
1094 /* the second block will be 0 when missing */
1095 const_iv (O_ACCMODE)
1096
1097 const_iv (O_RDONLY)
1098 const_iv (O_WRONLY)
1099 const_iv (O_RDWR)
1100 const_iv (O_CREAT)
1101 const_iv (O_TRUNC)
1102 const_iv (O_EXCL)
1103 const_iv (O_APPEND)
1104
1105 const_iv (O_ASYNC)
1106 const_iv (O_DIRECT)
1107 const_iv (O_NOATIME)
1108
1109 const_iv (O_CLOEXEC)
1110 const_iv (O_NOCTTY)
1111 const_iv (O_NOFOLLOW)
1112 const_iv (O_NONBLOCK)
1113 const_iv (O_EXEC)
1114 const_iv (O_SEARCH)
1115 const_iv (O_DIRECTORY)
1116 const_iv (O_DSYNC)
1117 const_iv (O_RSYNC)
1118 const_iv (O_SYNC)
1119 const_iv (O_PATH)
1120 const_iv (O_TMPFILE)
1121 const_iv (O_TTY_INIT)
1122
1123 const_iv (S_IFIFO)
1124 const_iv (S_IFCHR)
1125 const_iv (S_IFBLK)
1126 const_iv (S_IFLNK)
1127 const_iv (S_IFREG)
1128 const_iv (S_IFDIR)
1129 const_iv (S_IFWHT)
1130 const_iv (S_IFSOCK)
1131 const_iv (S_IFMT)
1132
1133 const_iv (ST_RDONLY)
1134 const_iv (ST_NOSUID)
1135 const_iv (ST_NODEV)
1136 const_iv (ST_NOEXEC)
1137 const_iv (ST_SYNCHRONOUS)
1138 const_iv (ST_MANDLOCK)
1139 const_iv (ST_WRITE)
1140 const_iv (ST_APPEND)
1141 const_iv (ST_IMMUTABLE)
1142 const_iv (ST_NOATIME)
1143 const_iv (ST_NODIRATIME)
1144 const_iv (ST_RELATIME)
1145
1146 const_iv (PROT_NONE)
1147 const_iv (PROT_EXEC)
1148 const_iv (PROT_READ)
1149 const_iv (PROT_WRITE)
1150
1151 const_iv (MAP_PRIVATE)
1152 const_iv (MAP_SHARED)
1153 const_iv (MAP_FIXED)
1154 const_iv (MAP_ANONYMOUS)
1155
1156 /* linuxish */
1157 const_iv (MAP_LOCKED)
1158 const_iv (MAP_NORESERVE)
1159 const_iv (MAP_POPULATE)
1160 const_iv (MAP_NONBLOCK)
1161 const_iv (MAP_GROWSDOWN)
1162 const_iv (MAP_32BIT)
1163 const_iv (MAP_HUGETLB)
1164 const_iv (MAP_STACK)
1165
1166 const_iv (MREMAP_MAYMOVE)
1167 const_iv (MREMAP_FIXED)
1168
1169 const_iv (F_DUPFD_CLOEXEC)
1170
1171 const_iv (MSG_CMSG_CLOEXEC)
1172 const_iv (SOCK_CLOEXEC)
1173
1174 const_iv (F_OFD_GETLK)
1175 const_iv (F_OFD_SETLK)
1176 const_iv (F_OFD_GETLKW)
1177
1178 const_iv (FIFREEZE)
1179 const_iv (FITHAW)
1180 const_iv (FITRIM)
1181 const_iv (FICLONE)
1182 const_iv (FICLONERANGE)
1183 const_iv (FIDEDUPERANGE)
1184
1185 const_iv (FS_IOC_GETFLAGS)
1186 const_iv (FS_IOC_SETFLAGS)
1187 const_iv (FS_IOC_GETVERSION)
1188 const_iv (FS_IOC_SETVERSION)
1189 const_iv (FS_IOC_FIEMAP)
1190 const_iv (FS_IOC_FSGETXATTR)
1191 const_iv (FS_IOC_FSSETXATTR)
1192 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1193 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1194 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1195
1196 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1197
1198 const_iv (FS_SECRM_FL)
1199 const_iv (FS_UNRM_FL)
1200 const_iv (FS_COMPR_FL)
1201 const_iv (FS_SYNC_FL)
1202 const_iv (FS_IMMUTABLE_FL)
1203 const_iv (FS_APPEND_FL)
1204 const_iv (FS_NODUMP_FL)
1205 const_iv (FS_NOATIME_FL)
1206 const_iv (FS_DIRTY_FL)
1207 const_iv (FS_COMPRBLK_FL)
1208 const_iv (FS_NOCOMP_FL)
1209 const_iv (FS_ENCRYPT_FL)
1210 const_iv (FS_BTREE_FL)
1211 const_iv (FS_INDEX_FL)
1212 const_iv (FS_JOURNAL_DATA_FL)
1213 const_iv (FS_NOTAIL_FL)
1214 const_iv (FS_DIRSYNC_FL)
1215 const_iv (FS_TOPDIR_FL)
1216 const_iv (FS_FL_USER_MODIFIABLE)
1217
1218 const_iv (FS_XFLAG_REALTIME)
1219 const_iv (FS_XFLAG_PREALLOC)
1220 const_iv (FS_XFLAG_IMMUTABLE)
1221 const_iv (FS_XFLAG_APPEND)
1222 const_iv (FS_XFLAG_SYNC)
1223 const_iv (FS_XFLAG_NOATIME)
1224 const_iv (FS_XFLAG_NODUMP)
1225 const_iv (FS_XFLAG_RTINHERIT)
1226 const_iv (FS_XFLAG_PROJINHERIT)
1227 const_iv (FS_XFLAG_NOSYMLINKS)
1228 const_iv (FS_XFLAG_EXTSIZE)
1229 const_iv (FS_XFLAG_EXTSZINHERIT)
1230 const_iv (FS_XFLAG_NODEFRAG)
1231 const_iv (FS_XFLAG_FILESTREAM)
1232 const_iv (FS_XFLAG_DAX)
1233 const_iv (FS_XFLAG_HASATTR)
1234
1235 const_iv (FIEMAP_FLAG_SYNC)
1236 const_iv (FIEMAP_FLAG_XATTR)
1237 const_iv (FIEMAP_FLAGS_COMPAT)
1238 const_iv (FIEMAP_EXTENT_LAST)
1239 const_iv (FIEMAP_EXTENT_UNKNOWN)
1240 const_iv (FIEMAP_EXTENT_DELALLOC)
1241 const_iv (FIEMAP_EXTENT_ENCODED)
1242 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1243 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1244 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1245 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1246 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1247 const_iv (FIEMAP_EXTENT_MERGED)
1248 const_iv (FIEMAP_EXTENT_SHARED)
1249
1250 const_iv (SPLICE_F_MOVE)
1251 const_iv (SPLICE_F_NONBLOCK)
1252 const_iv (SPLICE_F_MORE)
1253 const_iv (SPLICE_F_GIFT)
1254
1255 const_iv (EFD_CLOEXEC)
1256 const_iv (EFD_NONBLOCK)
1257 const_iv (EFD_SEMAPHORE)
1258
1259 const_iv (CLOCK_REALTIME)
1260 const_iv (CLOCK_MONOTONIC)
1261 const_iv (CLOCK_BOOTTIME)
1262 const_iv (CLOCK_REALTIME_ALARM)
1263 const_iv (CLOCK_BOOTTIME_ALARM)
1264
1265 const_iv (TFD_NONBLOCK)
1266 const_iv (TFD_CLOEXEC)
1267
1268 const_iv (TFD_TIMER_ABSTIME)
1269 const_iv (TFD_TIMER_CANCEL_ON_SET)
1270
1271 /* these are libeio constants, and are independent of gendef0 */
1272 const_eio (SEEK_SET)
1273 const_eio (SEEK_CUR)
1274 const_eio (SEEK_END)
1275
1276 const_eio (MCL_FUTURE)
1277 const_eio (MCL_CURRENT)
1278 const_eio (MCL_ONFAULT)
1279
1280 const_eio (MS_ASYNC)
1281 const_eio (MS_INVALIDATE)
1282 const_eio (MS_SYNC)
1283
1284 const_eio (MT_MODIFY)
1285
1286 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1287 const_eio (SYNC_FILE_RANGE_WRITE)
1288 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1289
1290 const_eio (FALLOC_FL_KEEP_SIZE)
1291 const_eio (FALLOC_FL_PUNCH_HOLE)
1292 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1293 const_eio (FALLOC_FL_ZERO_RANGE)
1294 const_eio (FALLOC_FL_INSERT_RANGE)
1295 const_eio (FALLOC_FL_UNSHARE_RANGE)
1296
1297 const_eio (RENAME_NOREPLACE)
1298 const_eio (RENAME_EXCHANGE)
1299 const_eio (RENAME_WHITEOUT)
1300
1301 const_eio (READDIR_DENTS)
1302 const_eio (READDIR_DIRS_FIRST)
1303 const_eio (READDIR_STAT_ORDER)
1304 const_eio (READDIR_FOUND_UNKNOWN)
1305
1306 const_eio (DT_UNKNOWN)
1307 const_eio (DT_FIFO)
1308 const_eio (DT_CHR)
1309 const_eio (DT_DIR)
1310 const_eio (DT_BLK)
1311 const_eio (DT_REG)
1312 const_eio (DT_LNK)
1313 const_eio (DT_SOCK)
1314 const_eio (DT_WHT)
1315 };
1316
1317 aio_stash = gv_stashpv ("IO::AIO" , 1);
1318 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1319 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1320 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1321
1322 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1323 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1324
1325 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1326
1327 /* allocate dummy pipe fd for aio_close */
1328 {
1329 int pipefd [2];
1330
1331 if (
1332#ifdef _WIN32
1333 _pipe (pipefd, 1, _O_BINARY) < 0
1334#else
1335 pipe (pipefd) < 0
1336 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1337#endif
1338 || close (pipefd [1]) < 0
1339 )
1340 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1341
1342 close_fd = pipefd [0];
1343 }
1344
1345 reinit ();
1346}
1347
783void 1348void
784min_parallel(nthreads) 1349reinit ()
785 int nthreads 1350 PROTOTYPE:
1351
1352void
1353max_poll_reqs (unsigned int nreqs)
786 PROTOTYPE: $ 1354 PROTOTYPE: $
1355 CODE:
1356 eio_set_max_poll_reqs (nreqs);
787 1357
788void 1358void
789max_parallel(nthreads) 1359max_poll_time (double nseconds)
790 int nthreads
791 PROTOTYPE: $ 1360 PROTOTYPE: $
792
793int
794max_outstanding(nreqs)
795 int nreqs
796 PROTOTYPE: $
797 CODE: 1361 CODE:
798 RETVAL = max_outstanding; 1362 eio_set_max_poll_time (nseconds);
1363
1364void
1365min_parallel (unsigned int nthreads)
1366 PROTOTYPE: $
1367 CODE:
1368 eio_set_min_parallel (nthreads);
1369
1370void
1371max_parallel (unsigned int nthreads)
1372 PROTOTYPE: $
1373 CODE:
1374 eio_set_max_parallel (nthreads);
1375
1376void
1377max_idle (unsigned int nthreads)
1378 PROTOTYPE: $
1379 CODE:
1380 eio_set_max_idle (nthreads);
1381
1382void
1383idle_timeout (unsigned int seconds)
1384 PROTOTYPE: $
1385 CODE:
1386 eio_set_idle_timeout (seconds);
1387
1388void
1389max_outstanding (unsigned int maxreqs)
1390 PROTOTYPE: $
1391 CODE:
799 max_outstanding = nreqs; 1392 max_outstanding = maxreqs;
800 1393
801void 1394void
802aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1395aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
803 SV * pathname
804 int flags
805 int mode
806 SV * callback
807 PROTOTYPE: $$$;$
808 CODE: 1396 PPCODE:
809{ 1397{
810 dREQ; 1398 dREQ;
811 1399
1400 req->type = EIO_WD_OPEN;
1401 req_set_path1 (req, pathname);
1402
1403 REQ_SEND;
1404}
1405
1406void
1407aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1408 PPCODE:
1409{
1410 dREQ;
1411
812 req->type = REQ_OPEN; 1412 req->type = EIO_OPEN;
813 req->data = newSVsv (pathname); 1413 req_set_path1 (req, pathname);
814 req->dataptr = SvPVbyte_nolen (req->data);
815 req->fd = flags; 1414 req->int1 = flags;
816 req->mode = mode; 1415 req->int2 = mode;
817 1416
818 send_req (req); 1417 REQ_SEND;
819} 1418}
820 1419
821void 1420void
822aio_close(fh,callback=&PL_sv_undef) 1421aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
823 SV * fh
824 SV * callback
825 PROTOTYPE: $;$
826 ALIAS: 1422 ALIAS:
827 aio_close = REQ_CLOSE
828 aio_fsync = REQ_FSYNC 1423 aio_fsync = EIO_FSYNC
829 aio_fdatasync = REQ_FDATASYNC 1424 aio_fdatasync = EIO_FDATASYNC
1425 aio_syncfs = EIO_SYNCFS
830 CODE: 1426 PPCODE:
831{ 1427{
1428 int fd = s_fileno_croak (fh, 0);
832 dREQ; 1429 dREQ;
833 1430
834 req->type = ix; 1431 req->type = ix;
835 req->fh = newSVsv (fh); 1432 req->sv1 = newSVsv (fh);
836 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1433 req->int1 = fd;
837 1434
838 send_req (req); 1435 REQ_SEND;
839} 1436}
840 1437
841void 1438void
1439aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1440 PPCODE:
1441{
1442 int fd = s_fileno_croak (fh, 0);
1443 dREQ;
1444
1445 req->type = EIO_SYNC_FILE_RANGE;
1446 req->sv1 = newSVsv (fh);
1447 req->int1 = fd;
1448 req->offs = offset;
1449 req->size = nbytes;
1450 req->int2 = flags;
1451
1452 REQ_SEND;
1453}
1454
1455void
1456aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1457 PPCODE:
1458{
1459 int fd = s_fileno_croak (fh, 0);
1460 dREQ;
1461
1462 req->type = EIO_FALLOCATE;
1463 req->sv1 = newSVsv (fh);
1464 req->int1 = fd;
1465 req->int2 = mode;
1466 req->offs = offset;
1467 req->size = len;
1468
1469 REQ_SEND;
1470}
1471
1472void
1473aio_close (SV *fh, SV *callback = &PL_sv_undef)
1474 PPCODE:
1475{
1476 int fd = s_fileno_croak (fh, 0);
1477 dREQ;
1478
1479 req->type = EIO_DUP2;
1480 req->int1 = close_fd;
1481 req->sv2 = newSVsv (fh);
1482 req->int2 = fd;
1483
1484 REQ_SEND;
1485}
1486
1487void
1488aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1489 PPCODE:
1490{
1491 int fd = s_fileno_croak (fh, 0);
1492 dREQ;
1493
1494 req->type = EIO_SEEK;
1495 req->sv1 = newSVsv (fh);
1496 req->int1 = fd;
1497 req->offs = SvVAL64 (offset);
1498 req->int2 = whence;
1499
1500 REQ_SEND;
1501}
1502
1503void
842aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1504aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
843 SV * fh
844 UV offset
845 UV length
846 SV * data
847 UV dataoffset
848 SV * callback
849 ALIAS: 1505 ALIAS:
850 aio_read = REQ_READ 1506 aio_read = EIO_READ
851 aio_write = REQ_WRITE 1507 aio_write = EIO_WRITE
852 PROTOTYPE: $$$$$;$
853 CODE: 1508 PPCODE:
854{ 1509{
855 aio_req req;
856 STRLEN svlen; 1510 STRLEN svlen;
1511 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
857 char *svptr = SvPVbyte (data, svlen); 1512 char *svptr = SvPVbyte (data, svlen);
858 1513 UV len = SvUV (length);
859 SvUPGRADE (data, SVt_PV);
860 SvPOK_on (data);
861 1514
862 if (dataoffset < 0) 1515 if (dataoffset < 0)
863 dataoffset += svlen; 1516 dataoffset += svlen;
864 1517
865 if (dataoffset < 0 || dataoffset > svlen) 1518 if (dataoffset < 0 || dataoffset > svlen)
866 croak ("data offset outside of string"); 1519 croak ("dataoffset outside of data scalar");
867 1520
868 if (ix == REQ_WRITE) 1521 if (ix == EIO_WRITE)
869 { 1522 {
870 /* write: check length and adjust. */ 1523 /* write: check length and adjust. */
871 if (length < 0 || length + dataoffset > svlen) 1524 if (!SvOK (length) || len + dataoffset > svlen)
872 length = svlen - dataoffset; 1525 len = svlen - dataoffset;
873 } 1526 }
874 else 1527 else
875 { 1528 {
876 /* read: grow scalar as necessary */ 1529 /* read: check type and grow scalar as necessary */
1530 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
877 svptr = SvGROW (data, length + dataoffset); 1531 svptr = sv_grow (data, len + dataoffset + 1);
1532 else if (SvCUR (data) < len + dataoffset)
1533 croak ("length + dataoffset outside of scalar, and cannot grow");
878 } 1534 }
879
880 if (length < 0)
881 croak ("length must not be negative");
882 1535
883 { 1536 {
884 dREQ; 1537 dREQ;
885 1538
886 req->type = ix; 1539 req->type = ix;
887 req->fh = newSVsv (fh); 1540 req->sv1 = newSVsv (fh);
888 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1541 req->int1 = fd;
889 : IoOFP (sv_2io (fh))); 1542 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
890 req->offset = offset; 1543 req->size = len;
891 req->length = length;
892 req->data = SvREFCNT_inc (data); 1544 req->sv2 = SvREFCNT_inc (data);
893 req->dataptr = (char *)svptr + dataoffset; 1545 req->ptr2 = (char *)svptr + dataoffset;
1546 req->stroffset = dataoffset;
894 1547
895 if (!SvREADONLY (data)) 1548 if (!SvREADONLY (data))
896 { 1549 {
897 SvREADONLY_on (data); 1550 SvREADONLY_on (data);
898 req->data2ptr = (void *)data; 1551 req->flags |= FLAG_SV2_RO_OFF;
899 } 1552 }
900 1553
901 send_req (req); 1554 REQ_SEND;
902 } 1555 }
903} 1556}
904 1557
905void 1558void
906aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1559aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
907 SV * out_fh
908 SV * in_fh
909 UV in_offset
910 UV length
911 SV * callback
912 PROTOTYPE: $$$$;$
913 CODE:
914{
915 dREQ;
916
917 req->type = REQ_SENDFILE;
918 req->fh = newSVsv (out_fh);
919 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
920 req->fh2 = newSVsv (in_fh);
921 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
922 req->offset = in_offset;
923 req->length = length;
924
925 send_req (req);
926}
927
928void
929aio_readahead(fh,offset,length,callback=&PL_sv_undef)
930 SV * fh
931 UV offset
932 IV length
933 SV * callback
934 PROTOTYPE: $$$;$
935 CODE:
936{
937 dREQ;
938
939 req->type = REQ_READAHEAD;
940 req->fh = newSVsv (fh);
941 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
942 req->offset = offset;
943 req->length = length;
944
945 send_req (req);
946}
947
948void
949aio_stat(fh_or_path,callback=&PL_sv_undef)
950 SV * fh_or_path
951 SV * callback
952 ALIAS: 1560 ALIAS:
953 aio_stat = REQ_STAT 1561 aio_ioctl = EIO_IOCTL
954 aio_lstat = REQ_LSTAT 1562 aio_fcntl = EIO_FCNTL
955 CODE: 1563 PPCODE:
956{ 1564{
957 dREQ; 1565 int fd = s_fileno_croak (fh, 0);
1566 char *svptr;
958 1567
959 New (0, req->statdata, 1, Stat_t); 1568 if (SvPOK (arg) || !SvNIOK (arg))
960 if (!req->statdata)
961 { 1569 {
962 free_req (req); 1570 STRLEN svlen;
963 croak ("out of memory during aio_req->statdata allocation"); 1571 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
964 } 1572#ifdef IOCPARM_LEN
1573 STRLEN need = IOCPARM_LEN (request);
1574#else
1575 STRLEN need = 256;
1576#endif
965 1577
966 if (SvPOK (fh_or_path)) 1578 if (svlen < need)
967 { 1579 svptr = SvGROW (arg, need);
968 req->type = ix;
969 req->data = newSVsv (fh_or_path);
970 req->dataptr = SvPVbyte_nolen (req->data);
971 } 1580 }
972 else 1581 else
1582 svptr = (char *)SvIV (arg);
1583
973 { 1584 {
1585 dREQ;
1586
974 req->type = REQ_FSTAT; 1587 req->type = ix;
975 req->fh = newSVsv (fh_or_path); 1588 req->sv1 = newSVsv (fh);
976 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1589 req->int1 = fd;
1590 req->int2 = (long)request;
1591 req->sv2 = SvREFCNT_inc (arg);
1592 req->ptr2 = svptr;
1593
1594 REQ_SEND;
977 } 1595 }
978
979 send_req (req);
980} 1596}
981 1597
982void 1598void
983aio_unlink(pathname,callback=&PL_sv_undef) 1599aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
984 SV * pathname
985 SV * callback
986 ALIAS: 1600 ALIAS:
987 aio_unlink = REQ_UNLINK 1601 aio_readlink = EIO_READLINK
988 aio_rmdir = REQ_RMDIR 1602 aio_realpath = EIO_REALPATH
1603 PPCODE:
1604{
1605 dREQ;
1606
1607 req->type = ix;
1608 req_set_path1 (req, pathname);
1609
1610 REQ_SEND;
1611}
1612
1613void
1614aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1615 PPCODE:
1616{
1617 int ifd = s_fileno_croak (in_fh , 0);
1618 int ofd = s_fileno_croak (out_fh, 1);
1619 dREQ;
1620
1621 req->type = EIO_SENDFILE;
1622 req->sv1 = newSVsv (out_fh);
1623 req->int1 = ofd;
1624 req->sv2 = newSVsv (in_fh);
1625 req->int2 = ifd;
1626 req->offs = in_offset;
1627 req->size = length;
1628
1629 REQ_SEND;
1630}
1631
1632void
1633aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1634 PPCODE:
1635{
1636 int fd = s_fileno_croak (fh, 0);
1637 dREQ;
1638
1639 req->type = EIO_READAHEAD;
1640 req->sv1 = newSVsv (fh);
1641 req->int1 = fd;
1642 req->offs = offset;
1643 req->size = length;
1644
1645 REQ_SEND;
1646}
1647
1648void
1649aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1650 ALIAS:
1651 aio_stat = EIO_STAT
1652 aio_lstat = EIO_LSTAT
1653 aio_statvfs = EIO_STATVFS
1654 PPCODE:
1655{
1656 dREQ;
1657
1658 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1659
1660 REQ_SEND;
1661}
1662
1663void
1664st_xtime ()
1665 ALIAS:
1666 st_atime = 0x01
1667 st_mtime = 0x02
1668 st_ctime = 0x04
1669 st_btime = 0x08
1670 st_xtime = 0x0f
1671 PPCODE:
1672 EXTEND (SP, 4);
1673 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1674 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1675 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1676 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1677
1678void
1679st_xtimensec ()
1680 ALIAS:
1681 st_atimensec = 0x01
1682 st_mtimensec = 0x02
1683 st_ctimensec = 0x04
1684 st_btimensec = 0x08
1685 st_xtimensec = 0x0f
1686 st_btimesec = 0x10
1687 st_gen = 0x20
1688 PPCODE:
1689 EXTEND (SP, 4);
1690 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1691 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1692 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1693 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1694 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1695 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1696
1697UV
1698major (UV dev)
1699 ALIAS:
1700 minor = 1
989 CODE: 1701 CODE:
1702 RETVAL = ix ? minor (dev) : major (dev);
1703 OUTPUT:
1704 RETVAL
1705
1706UV
1707makedev (UV maj, UV min)
1708 CODE:
1709 RETVAL = makedev (maj, min);
1710 OUTPUT:
1711 RETVAL
1712
1713void
1714aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1715 PPCODE:
1716{
1717 dREQ;
1718
1719 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1720 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1721 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1722
1723 REQ_SEND;
1724}
1725
1726void
1727aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1728 PPCODE:
1729{
1730 dREQ;
1731
1732 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1733 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1734
1735 REQ_SEND;
1736}
1737
1738void
1739aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1740 PPCODE:
1741{
1742 dREQ;
1743
1744 req->int2 = mode;
1745 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1746
1747 REQ_SEND;
1748}
1749
1750void
1751aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1752 PPCODE:
1753{
1754 dREQ;
1755
1756 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1757 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1758 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1759
1760 REQ_SEND;
1761}
1762
1763void
1764aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1765 PPCODE:
1766{
1767 dREQ;
1768
1769 req->type = EIO_READDIR;
1770 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1771
1772 if (flags & EIO_READDIR_DENTS)
1773 req->int1 |= EIO_READDIR_CUSTOM2;
1774
1775 req_set_path1 (req, pathname);
1776
1777 REQ_SEND;
1778}
1779
1780void
1781aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1782 PPCODE:
1783{
1784 dREQ;
1785
1786 req->type = EIO_MKDIR;
1787 req->int2 = mode;
1788 req_set_path1 (req, pathname);
1789
1790 REQ_SEND;
1791}
1792
1793void
1794aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1795 ALIAS:
1796 aio_unlink = EIO_UNLINK
1797 aio_rmdir = EIO_RMDIR
1798 aio_readdir = EIO_READDIR
1799 PPCODE:
990{ 1800{
991 dREQ; 1801 dREQ;
992 1802
993 req->type = ix; 1803 req->type = ix;
994 req->data = newSVsv (pathname); 1804 req_set_path1 (req, pathname);
995 req->dataptr = SvPVbyte_nolen (req->data);
996
997 send_req (req);
998}
999 1805
1806 REQ_SEND;
1807}
1808
1000void 1809void
1001aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1810aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1002 SV * oldpath 1811 ALIAS:
1003 SV * newpath 1812 aio_link = EIO_LINK
1004 SV * callback 1813 aio_symlink = EIO_SYMLINK
1814 aio_rename = EIO_RENAME
1005 CODE: 1815 PPCODE:
1006{ 1816{
1817 eio_wd wd2 = 0;
1007 dREQ; 1818 dREQ;
1008 1819
1009 req->type = REQ_SYMLINK; 1820 req->type = ix;
1010 req->fh = newSVsv (oldpath); 1821 req_set_path1 (req, oldpath);
1011 req->data2ptr = SvPVbyte_nolen (req->fh); 1822 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1012 req->data = newSVsv (newpath); 1823 req->int3 = (long)wd2;
1013 req->dataptr = SvPVbyte_nolen (req->data);
1014 1824
1015 send_req (req); 1825 REQ_SEND;
1016} 1826}
1017 1827
1018void 1828void
1019aio_readdir(pathname,callback=&PL_sv_undef) 1829aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1020 SV * pathname
1021 SV * callback
1022 CODE: 1830 PPCODE:
1023{ 1831{
1832 eio_wd wd2 = 0;
1024 dREQ; 1833 dREQ;
1025 1834
1026 req->type = REQ_READDIR; 1835 req->type = EIO_RENAME;
1027 req->data = newSVsv (pathname); 1836 req_set_path1 (req, oldpath);
1028 req->dataptr = SvPVbyte_nolen (req->data); 1837 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1838 req->int2 = flags;
1839 req->int3 = (long)wd2;
1029 1840
1030 send_req (req); 1841 REQ_SEND;
1031} 1842}
1032 1843
1033void 1844void
1034flush() 1845aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1035 PROTOTYPE: 1846 PPCODE:
1847{
1848 dREQ;
1849
1850 req->type = EIO_MKNOD;
1851 req->int2 = (mode_t)mode;
1852 req->offs = dev;
1853 req_set_path1 (req, pathname);
1854
1855 REQ_SEND;
1856}
1857
1858void
1859aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1860 ALIAS:
1861 aio_mtouch = EIO_MTOUCH
1862 aio_msync = EIO_MSYNC
1863 PPCODE:
1864{
1865 STRLEN svlen;
1866 char *svptr = SvPVbyte (data, svlen);
1867 UV len = SvUV (length);
1868
1869 if (flags < 0)
1870 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1871
1872 if (offset < 0)
1873 offset += svlen;
1874
1875 if (offset < 0 || offset > svlen)
1876 croak ("offset outside of scalar");
1877
1878 if (!SvOK (length) || len + offset > svlen)
1879 len = svlen - offset;
1880
1881 {
1882 dREQ;
1883
1884 req->type = ix;
1885 req->sv2 = SvREFCNT_inc (data);
1886 req->ptr2 = (char *)svptr + offset;
1887 req->size = len;
1888 req->int1 = flags;
1889
1890 REQ_SEND;
1891 }
1892}
1893
1894void
1895aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1896 PPCODE:
1897{
1898 STRLEN svlen;
1899 char *svptr = SvPVbyte (data, svlen);
1900 UV len = SvUV (length);
1901
1902 if (offset < 0)
1903 offset += svlen;
1904
1905 if (offset < 0 || offset > svlen)
1906 croak ("offset outside of scalar");
1907
1908 if (!SvOK (length) || len + offset > svlen)
1909 len = svlen - offset;
1910
1911 {
1912 dREQ;
1913
1914 req->type = EIO_MLOCK;
1915 req->sv2 = SvREFCNT_inc (data);
1916 req->ptr2 = (char *)svptr + offset;
1917 req->size = len;
1918
1919 REQ_SEND;
1920 }
1921}
1922
1923void
1924aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1925 PPCODE:
1926{
1927 dREQ;
1928
1929 req->type = EIO_MLOCKALL;
1930 req->int1 = flags;
1931
1932 REQ_SEND;
1933}
1934
1935void
1936aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1937 PPCODE:
1938{
1939 int fd = s_fileno_croak (fh, 0);
1940 dREQ;
1941
1942 req->type = EIO_CUSTOM;
1943 req->sv1 = newSVsv (fh);
1944 req->int1 = fd;
1945
1946 req->feed = fiemap;
1947#if HAVE_FIEMAP
1948 /* keep our fingers crossed that the next two types are 64 bit */
1949 req->offs = start;
1950 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1951 req->int2 = flags;
1952 req->int3 = SvOK (count) ? SvIV (count) : -1;
1953#endif
1954
1955 REQ_SEND;
1956}
1957
1958void
1959aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1960 PPCODE:
1961{
1962 char *svptr = 0;
1963
1964 sv_clear_foreign (data);
1965
1966 if (length) /* known length, directly read into scalar */
1967 {
1968 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1969 svptr = sv_grow (data, length + 1);
1970 else if (SvCUR (data) < length)
1971 croak ("length outside of scalar, and cannot grow");
1972 else
1973 svptr = SvPVbyte_nolen (data);
1974 }
1975
1976 {
1977 dREQ;
1978
1979 req->type = EIO_SLURP;
1980 req_set_path1 (req, pathname);
1981 req->offs = offset;
1982 req->size = length;
1983 req->sv2 = SvREFCNT_inc (data);
1984 req->ptr2 = svptr;
1985
1986 if (!SvREADONLY (data))
1987 {
1988 SvREADONLY_on (data);
1989 req->flags |= FLAG_SV2_RO_OFF;
1990 }
1991
1992 REQ_SEND;
1993 }
1994}
1995
1996void
1997aio_busy (double delay, SV *callback = &PL_sv_undef)
1998 PPCODE:
1999{
2000 dREQ;
2001
2002 req->type = EIO_BUSY;
2003 req->nv1 = delay < 0. ? 0. : delay;
2004
2005 REQ_SEND;
2006}
2007
2008void
2009aio_group (SV *callback = &PL_sv_undef)
2010 PPCODE:
2011{
2012 dREQ;
2013
2014 req->type = EIO_GROUP;
2015
2016 PUTBACK;
2017 req_submit (req);
2018 SPAGAIN;
2019
2020 XPUSHs (req_sv (req, aio_grp_stash));
2021}
2022
2023void
2024aio_nop (SV *callback = &PL_sv_undef)
2025 ALIAS:
2026 aio_nop = EIO_NOP
2027 aio_sync = EIO_SYNC
2028 PPCODE:
2029{
2030 dREQ;
2031
2032 req->type = ix;
2033
2034 REQ_SEND;
2035}
2036
2037int
2038aioreq_pri (int pri = NO_INIT)
1036 CODE: 2039 CODE:
2040 RETVAL = next_pri;
2041 if (items > 0)
2042 {
2043 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2044 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2045 next_pri = pri;
2046 }
2047 OUTPUT:
2048 RETVAL
2049
2050void
2051aioreq_nice (int nice = 0)
2052 CODE:
2053 nice = next_pri - nice;
2054 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2055 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2056 next_pri = nice;
2057
2058void
2059flush ()
2060 CODE:
1037 while (nreqs) 2061 while (eio_nreqs ())
1038 { 2062 {
1039 poll_wait (); 2063 poll_wait ();
1040 poll_cb (); 2064 poll_cb ();
1041 } 2065 }
1042 2066
1043void 2067int
1044poll() 2068poll ()
1045 PROTOTYPE:
1046 CODE: 2069 CODE:
1047 if (nreqs)
1048 {
1049 poll_wait (); 2070 poll_wait ();
1050 poll_cb (); 2071 RETVAL = poll_cb ();
1051 }
1052
1053int
1054poll_fileno()
1055 PROTOTYPE:
1056 CODE:
1057 RETVAL = respipe [0];
1058 OUTPUT: 2072 OUTPUT:
1059 RETVAL 2073 RETVAL
1060 2074
1061int 2075int
2076poll_fileno ()
2077 CODE:
2078 RETVAL = s_epipe_fd (&respipe);
2079 OUTPUT:
2080 RETVAL
2081
2082int
1062poll_cb(...) 2083poll_cb (...)
1063 PROTOTYPE: 2084 PROTOTYPE:
1064 CODE: 2085 CODE:
1065 RETVAL = poll_cb (); 2086 RETVAL = poll_cb ();
1066 OUTPUT: 2087 OUTPUT:
1067 RETVAL 2088 RETVAL
1068 2089
1069void 2090void
1070poll_wait() 2091poll_wait ()
1071 PROTOTYPE:
1072 CODE: 2092 CODE:
1073 if (nreqs)
1074 poll_wait (); 2093 poll_wait ();
1075 2094
1076int 2095int
1077nreqs() 2096nreqs ()
1078 PROTOTYPE:
1079 CODE: 2097 CODE:
1080 RETVAL = nreqs; 2098 RETVAL = eio_nreqs ();
1081 OUTPUT: 2099 OUTPUT:
1082 RETVAL 2100 RETVAL
1083 2101
2102int
2103nready ()
2104 CODE:
2105 RETVAL = eio_nready ();
2106 OUTPUT:
2107 RETVAL
2108
2109int
2110npending ()
2111 CODE:
2112 RETVAL = eio_npending ();
2113 OUTPUT:
2114 RETVAL
2115
2116int
2117nthreads ()
2118 CODE:
2119 RETVAL = eio_nthreads ();
2120 OUTPUT:
2121 RETVAL
2122
2123int
2124fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2125 CODE:
2126 RETVAL = posix_fadvise (fh, offset, length, advice);
2127 OUTPUT:
2128 RETVAL
2129
2130IV
2131sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2132 CODE:
2133 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2134 OUTPUT:
2135 RETVAL
2136
2137void
2138mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2139 PPCODE:
2140 sv_clear_foreign (scalar);
2141{
2142 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2143 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2144 if (addr == (void *)-1)
2145 XSRETURN_NO;
2146
2147 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2148
2149 if (!(prot & PROT_WRITE))
2150 SvREADONLY_on (scalar);
2151
2152 XSRETURN_YES;
2153}
2154
2155void
2156munmap (SV *scalar)
2157 CODE:
2158 sv_clear_foreign (scalar);
2159
2160SV *
2161mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2162 CODE:
2163{
2164 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2165 void *new;
2166
2167 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2168 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2169
2170 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2171
2172 RETVAL = &PL_sv_no;
2173
2174 if (new != (void *)-1)
2175 {
2176 RETVAL = new == (void *)mg->mg_ptr
2177 ? newSVpvn ("0 but true", 10)
2178 : &PL_sv_yes;
2179
2180 mg->mg_ptr = (char *)new;
2181 mg->mg_obj = (SV *)new_length;
2182
2183 SvPVX (scalar) = mg->mg_ptr;
2184 SvCUR_set (scalar, new_length);
2185 }
2186}
2187 OUTPUT:
2188 RETVAL
2189
2190int
2191madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2192 ALIAS:
2193 mprotect = 1
2194 CODE:
2195{
2196 STRLEN svlen;
2197 void *addr = SvPVbyte (scalar, svlen);
2198 STRLEN len = SvUV (length);
2199
2200 if (offset < 0)
2201 offset += svlen;
2202
2203 if (offset < 0 || offset > svlen)
2204 croak ("offset outside of scalar");
2205
2206 if (!SvOK (length) || len + offset > svlen)
2207 len = svlen - offset;
2208
2209 addr = (void *)(((intptr_t)addr) + offset);
2210 eio_page_align (&addr, &len);
2211
2212 switch (ix)
2213 {
2214 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2215 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2216 }
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2223 CODE:
2224{
2225 STRLEN svlen;
2226 void *addr = SvPVbyte (scalar, svlen);
2227 size_t len = SvUV (length);
2228
2229 if (offset < 0)
2230 offset += svlen;
2231
2232 if (offset < 0 || offset > svlen)
2233 croak ("offset outside of scalar");
2234
2235 if (!SvOK (length) || len + offset > svlen)
2236 len = svlen - offset;
2237
2238 addr = (void *)(((intptr_t)addr) + offset);
2239 eio_page_align (&addr, &len);
2240#if _POSIX_MEMLOCK_RANGE
2241 RETVAL = munlock (addr, len);
2242#else
2243 RETVAL = EIO_ENOSYS ();
2244#endif
2245}
2246 OUTPUT:
2247 RETVAL
2248
2249int
2250mlockall (int flags)
2251 PROTOTYPE: $;
2252 CODE:
2253 RETVAL = eio_mlockall_sync (flags);
2254 OUTPUT:
2255 RETVAL
2256
2257int
2258munlockall ()
2259 CODE:
2260#if _POSIX_MEMLOCK
2261 munlockall ();
2262#else
2263 RETVAL = EIO_ENOSYS ();
2264#endif
2265 OUTPUT:
2266 RETVAL
2267
2268int
2269splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2270 CODE:
2271{
2272#if HAVE_LINUX_SPLICE
2273 loff_t off_in_, off_out_;
2274 RETVAL = splice (
2275 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2276 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2277 length, flags
2278 );
2279#else
2280 RETVAL = EIO_ENOSYS ();
2281#endif
2282}
2283 OUTPUT:
2284 RETVAL
2285
2286int
2287tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2288 CODE:
2289#if HAVE_LINUX_SPLICE
2290 RETVAL = tee (rfh, wfh, length, flags);
2291#else
2292 RETVAL = EIO_ENOSYS ();
2293#endif
2294 OUTPUT:
2295 RETVAL
2296
2297int
2298pipesize (aio_rfd rfh, int new_size = -1)
2299 PROTOTYPE: $;$
2300 CODE:
2301#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2302 if (new_size >= 0)
2303 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2304 else
2305 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2306#else
2307 errno = ENOSYS;
2308 RETVAL = -1;
2309#endif
2310 OUTPUT:
2311 RETVAL
2312
2313void
2314pipe2 (int flags = 0)
2315 PROTOTYPE: ;$
2316 PPCODE:
2317{
2318 int fd[2];
2319 int res;
2320
2321 if (flags)
2322#if HAVE_PIPE2
2323 res = pipe2 (fd, flags);
2324#else
2325 res = (errno = ENOSYS, -1);
2326#endif
2327 else
2328 res = pipe (fd);
2329
2330 if (!res)
2331 {
2332 EXTEND (SP, 2);
2333 PUSHs (newmortalFH (fd[0], O_RDONLY));
2334 PUSHs (newmortalFH (fd[1], O_WRONLY));
2335 }
2336}
2337
2338void
2339eventfd (unsigned int initval = 0, int flags = 0)
2340 PPCODE:
2341{
2342 int fd;
2343#if HAVE_EVENTFD
2344 fd = eventfd (initval, flags);
2345#else
2346 fd = (errno = ENOSYS, -1);
2347#endif
2348
2349 XPUSHs (newmortalFH (fd, O_RDWR));
2350}
2351
2352void
2353timerfd_create (int clockid, int flags = 0)
2354 PPCODE:
2355{
2356 int fd;
2357#if HAVE_TIMERFD
2358 fd = timerfd_create (clockid, flags);
2359#else
2360 fd = (errno = ENOSYS, -1);
2361#endif
2362
2363 XPUSHs (newmortalFH (fd, O_RDWR));
2364}
2365
2366void
2367timerfd_settime (SV *fh, int flags, NV interval, NV value)
2368 PPCODE:
2369{
2370 int fd = s_fileno_croak (fh, 0);
2371#if HAVE_TIMERFD
2372 int res;
2373 struct itimerspec its, ots;
2374
2375 ts_set (&its.it_interval, interval);
2376 ts_set (&its.it_value , value);
2377 res = timerfd_settime (fd, flags, &its, &ots);
2378
2379 if (!res)
2380 {
2381 EXTEND (SP, 2);
2382 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2383 PUSHs (newSVnv (ts_get (&ots.it_value)));
2384 }
2385#else
2386 errno = ENOSYS;
2387#endif
2388}
2389
2390void
2391timerfd_gettime (SV *fh)
2392 PPCODE:
2393{
2394 int fd = s_fileno_croak (fh, 0);
2395#if HAVE_TIMERFD
2396 int res;
2397 struct itimerspec ots;
2398 res = timerfd_gettime (fd, &ots);
2399
2400 if (!res)
2401 {
2402 EXTEND (SP, 2);
2403 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2404 PUSHs (newSVnv (ts_get (&ots.it_value)));
2405 }
2406#else
2407 errno = ENOSYS;
2408#endif
2409}
2410
2411UV
2412get_fdlimit ()
2413 CODE:
2414#if HAVE_RLIMITS
2415 struct rlimit rl;
2416 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2417 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2418#endif
2419 XSRETURN_UNDEF;
2420 OUTPUT:
2421 RETVAL
2422
2423void
2424min_fdlimit (UV limit = 0x7fffffffU)
2425 CODE:
2426{
2427#if HAVE_RLIMITS
2428 struct rlimit rl;
2429 rlim_t orig_rlim_max;
2430 UV bit;
2431
2432 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2433 goto fail;
2434
2435 if (rl.rlim_cur == RLIM_INFINITY)
2436 XSRETURN_YES;
2437
2438 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2439
2440 if (rl.rlim_cur < limit)
2441 {
2442 rl.rlim_cur = limit;
2443
2444 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2445 rl.rlim_max = rl.rlim_cur;
2446 }
2447
2448 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2449 XSRETURN_YES;
2450
2451 if (errno == EPERM)
2452 {
2453 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2454 /* our limit overflows a system-wide limit */
2455 /* try an adaptive algorithm, but do not lower the hardlimit */
2456 rl.rlim_max = 0;
2457 for (bit = 0x40000000U; bit; bit >>= 1)
2458 {
2459 rl.rlim_max |= bit;
2460 rl.rlim_cur = rl.rlim_max;
2461
2462 /* nevr decrease the hard limit */
2463 if (rl.rlim_max < orig_rlim_max)
2464 break;
2465
2466 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2467 rl.rlim_max &= ~bit; /* too high, remove bit again */
2468 }
2469
2470 /* now, raise the soft limit to the max permitted */
2471 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2472 {
2473 rl.rlim_cur = rl.rlim_max;
2474 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2475 errno = EPERM;
2476 }
2477 }
2478#endif
2479 fail:
2480 XSRETURN_UNDEF;
2481}
2482
2483void _on_next_submit (SV *cb)
2484 CODE:
2485 SvREFCNT_dec (on_next_submit);
2486 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2487
2488PROTOTYPES: DISABLE
2489
2490MODULE = IO::AIO PACKAGE = IO::AIO::WD
2491
2492BOOT:
2493{
2494 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2495 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2496}
2497
2498void
2499DESTROY (SV *self)
2500 CODE:
2501{
2502 aio_wd wd = SvAIO_WD (self);
2503#if HAVE_AT
2504 {
2505 SV *callback = &PL_sv_undef;
2506 dREQ; /* clobbers next_pri :/ */
2507 next_pri = req->pri; /* restore next_pri */
2508 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2509 req->type = EIO_WD_CLOSE;
2510 req->wd = wd;
2511 REQ_SEND;
2512 }
2513#else
2514 eio_wd_close_sync (wd);
2515#endif
2516}
2517
2518MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2519
2520void
2521cancel (aio_req_ornot req)
2522 CODE:
2523 eio_cancel (req);
2524
2525void
2526cb (aio_req_ornot req, SV *callback = NO_INIT)
2527 PPCODE:
2528{
2529 if (GIMME_V != G_VOID)
2530 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2531
2532 if (items > 1)
2533 {
2534 SV *cb_cv = get_cb (callback);
2535
2536 SvREFCNT_dec (req->callback);
2537 req->callback = SvREFCNT_inc (cb_cv);
2538 }
2539}
2540
2541MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2542
2543void
2544add (aio_req grp, ...)
2545 PPCODE:
2546{
2547 int i;
2548
2549 if (grp->int1 == 2)
2550 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2551
2552 for (i = 1; i < items; ++i )
2553 {
2554 aio_req req;
2555
2556 if (GIMME_V != G_VOID)
2557 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2558
2559 req = SvAIO_REQ (ST (i));
2560
2561 if (req)
2562 eio_grp_add (grp, req);
2563 }
2564}
2565
2566void
2567cancel_subs (aio_req_ornot req)
2568 CODE:
2569 req_cancel_subs (req);
2570
2571void
2572result (aio_req grp, ...)
2573 CODE:
2574{
2575 int i;
2576 AV *av;
2577
2578 grp->errorno = errno;
2579
2580 av = newAV ();
2581 av_extend (av, items - 1);
2582
2583 for (i = 1; i < items; ++i )
2584 av_push (av, newSVsv (ST (i)));
2585
2586 SvREFCNT_dec (grp->sv1);
2587 grp->sv1 = (SV *)av;
2588}
2589
2590void
2591errno (aio_req grp, int errorno = errno)
2592 CODE:
2593 grp->errorno = errorno;
2594
2595void
2596limit (aio_req grp, int limit)
2597 CODE:
2598 eio_grp_limit (grp, limit);
2599
2600void
2601feed (aio_req grp, SV *callback = &PL_sv_undef)
2602 CODE:
2603{
2604 SvREFCNT_dec (grp->sv2);
2605 grp->sv2 = newSVsv (callback);
2606 grp->feed = aio_grp_feed;
2607
2608 if (grp->int2 <= 0)
2609 grp->int2 = 2;
2610
2611 eio_grp_limit (grp, grp->int2);
2612}
2613

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