ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/IO-AIO/AIO.xs
(Generate patch)

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.267 by root, Sat Aug 25 19:25:32 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#if HAVE_SYS_MKDEV_H
22# if __linux
23# include <sys/sendfile.h>
24# elif __freebsd
25# include <sys/socket.h> 24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
26# include <sys/sysmacros.h>
27#endif
28
29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
26# include <sys/uio.h> 30# include <sys/mman.h>
27# elif __hpux 31#endif
32
33/* the incompetent fool that created musl keeps __linux__, refuses
34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89 #undef utime
90
91 #define EIO_STRUCT_STAT struct _stati64
92 #define EIO_STRUCT_STATI64
93
94#else
95
28# include <sys/socket.h> 96 #include <sys/time.h>
29# elif __solaris /* not yet */
30# include <sys/sendfile.h> 97 #include <sys/select.h>
98 #include <unistd.h>
99 #include <utime.h>
100 #include <signal.h>
101
102 #define EIO_STRUCT_STAT Stat_t
103
104#endif
105
106/*****************************************************************************/
107
108#if __GNUC__ >= 3
109# define expect(expr,value) __builtin_expect ((expr),(value))
110#else
111# define expect(expr,value) (expr)
112#endif
113
114#define expect_false(expr) expect ((expr) != 0, 0)
115#define expect_true(expr) expect ((expr) != 0, 1)
116
117/*****************************************************************************/
118
119#include "config.h"
120
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
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
1279 const_eio (MS_ASYNC)
1280 const_eio (MS_INVALIDATE)
1281 const_eio (MS_SYNC)
1282
1283 const_eio (MT_MODIFY)
1284
1285 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1286 const_eio (SYNC_FILE_RANGE_WRITE)
1287 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1288
1289 const_eio (FALLOC_FL_KEEP_SIZE)
1290 const_eio (FALLOC_FL_PUNCH_HOLE)
1291 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1292 const_eio (FALLOC_FL_ZERO_RANGE)
1293 const_eio (FALLOC_FL_INSERT_RANGE)
1294 const_eio (FALLOC_FL_UNSHARE_RANGE)
1295
1296 const_eio (RENAME_NOREPLACE)
1297 const_eio (RENAME_EXCHANGE)
1298 const_eio (RENAME_WHITEOUT)
1299
1300 const_eio (READDIR_DENTS)
1301 const_eio (READDIR_DIRS_FIRST)
1302 const_eio (READDIR_STAT_ORDER)
1303 const_eio (READDIR_FOUND_UNKNOWN)
1304
1305 const_eio (DT_UNKNOWN)
1306 const_eio (DT_FIFO)
1307 const_eio (DT_CHR)
1308 const_eio (DT_DIR)
1309 const_eio (DT_BLK)
1310 const_eio (DT_REG)
1311 const_eio (DT_LNK)
1312 const_eio (DT_SOCK)
1313 const_eio (DT_WHT)
1314 };
1315
1316 aio_stash = gv_stashpv ("IO::AIO" , 1);
1317 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1318 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1319 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1320
1321 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1322 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1323
1324 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1325
1326 /* allocate dummy pipe fd for aio_close */
1327 {
1328 int pipefd [2];
1329
1330 if (
1331#ifdef _WIN32
1332 _pipe (pipefd, 1, _O_BINARY) < 0
1333#else
1334 pipe (pipefd) < 0
1335 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1336#endif
1337 || close (pipefd [1]) < 0
1338 )
1339 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1340
1341 close_fd = pipefd [0];
1342 }
1343
1344 reinit ();
1345}
1346
783void 1347void
784min_parallel(nthreads) 1348reinit ()
785 int nthreads 1349 PROTOTYPE:
1350
1351void
1352max_poll_reqs (unsigned int nreqs)
786 PROTOTYPE: $ 1353 PROTOTYPE: $
1354 CODE:
1355 eio_set_max_poll_reqs (nreqs);
787 1356
788void 1357void
789max_parallel(nthreads) 1358max_poll_time (double nseconds)
790 int nthreads
791 PROTOTYPE: $ 1359 PROTOTYPE: $
792
793int
794max_outstanding(nreqs)
795 int nreqs
796 PROTOTYPE: $
797 CODE: 1360 CODE:
798 RETVAL = max_outstanding; 1361 eio_set_max_poll_time (nseconds);
1362
1363void
1364min_parallel (unsigned int nthreads)
1365 PROTOTYPE: $
1366 CODE:
1367 eio_set_min_parallel (nthreads);
1368
1369void
1370max_parallel (unsigned int nthreads)
1371 PROTOTYPE: $
1372 CODE:
1373 eio_set_max_parallel (nthreads);
1374
1375void
1376max_idle (unsigned int nthreads)
1377 PROTOTYPE: $
1378 CODE:
1379 eio_set_max_idle (nthreads);
1380
1381void
1382idle_timeout (unsigned int seconds)
1383 PROTOTYPE: $
1384 CODE:
1385 eio_set_idle_timeout (seconds);
1386
1387void
1388max_outstanding (unsigned int maxreqs)
1389 PROTOTYPE: $
1390 CODE:
799 max_outstanding = nreqs; 1391 max_outstanding = maxreqs;
800 1392
801void 1393void
802aio_open(pathname,flags,mode,callback=&PL_sv_undef) 1394aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
803 SV * pathname
804 int flags
805 int mode
806 SV * callback
807 PROTOTYPE: $$$;$
808 CODE: 1395 PPCODE:
809{ 1396{
810 dREQ; 1397 dREQ;
811 1398
1399 req->type = EIO_WD_OPEN;
1400 req_set_path1 (req, pathname);
1401
1402 REQ_SEND;
1403}
1404
1405void
1406aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1407 PPCODE:
1408{
1409 dREQ;
1410
812 req->type = REQ_OPEN; 1411 req->type = EIO_OPEN;
813 req->data = newSVsv (pathname); 1412 req_set_path1 (req, pathname);
814 req->dataptr = SvPVbyte_nolen (req->data);
815 req->fd = flags; 1413 req->int1 = flags;
816 req->mode = mode; 1414 req->int2 = mode;
817 1415
818 send_req (req); 1416 REQ_SEND;
819} 1417}
820 1418
821void 1419void
822aio_close(fh,callback=&PL_sv_undef) 1420aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
823 SV * fh
824 SV * callback
825 PROTOTYPE: $;$
826 ALIAS: 1421 ALIAS:
827 aio_close = REQ_CLOSE
828 aio_fsync = REQ_FSYNC 1422 aio_fsync = EIO_FSYNC
829 aio_fdatasync = REQ_FDATASYNC 1423 aio_fdatasync = EIO_FDATASYNC
1424 aio_syncfs = EIO_SYNCFS
830 CODE: 1425 PPCODE:
831{ 1426{
1427 int fd = s_fileno_croak (fh, 0);
832 dREQ; 1428 dREQ;
833 1429
834 req->type = ix; 1430 req->type = ix;
835 req->fh = newSVsv (fh); 1431 req->sv1 = newSVsv (fh);
836 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1432 req->int1 = fd;
837 1433
838 send_req (req); 1434 REQ_SEND;
839} 1435}
840 1436
841void 1437void
1438aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1439 PPCODE:
1440{
1441 int fd = s_fileno_croak (fh, 0);
1442 dREQ;
1443
1444 req->type = EIO_SYNC_FILE_RANGE;
1445 req->sv1 = newSVsv (fh);
1446 req->int1 = fd;
1447 req->offs = offset;
1448 req->size = nbytes;
1449 req->int2 = flags;
1450
1451 REQ_SEND;
1452}
1453
1454void
1455aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1456 PPCODE:
1457{
1458 int fd = s_fileno_croak (fh, 0);
1459 dREQ;
1460
1461 req->type = EIO_FALLOCATE;
1462 req->sv1 = newSVsv (fh);
1463 req->int1 = fd;
1464 req->int2 = mode;
1465 req->offs = offset;
1466 req->size = len;
1467
1468 REQ_SEND;
1469}
1470
1471void
1472aio_close (SV *fh, SV *callback = &PL_sv_undef)
1473 PPCODE:
1474{
1475 int fd = s_fileno_croak (fh, 0);
1476 dREQ;
1477
1478 req->type = EIO_DUP2;
1479 req->int1 = close_fd;
1480 req->sv2 = newSVsv (fh);
1481 req->int2 = fd;
1482
1483 REQ_SEND;
1484}
1485
1486void
1487aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1488 PPCODE:
1489{
1490 int fd = s_fileno_croak (fh, 0);
1491 dREQ;
1492
1493 req->type = EIO_SEEK;
1494 req->sv1 = newSVsv (fh);
1495 req->int1 = fd;
1496 req->offs = SvVAL64 (offset);
1497 req->int2 = whence;
1498
1499 REQ_SEND;
1500}
1501
1502void
842aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1503aio_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: 1504 ALIAS:
850 aio_read = REQ_READ 1505 aio_read = EIO_READ
851 aio_write = REQ_WRITE 1506 aio_write = EIO_WRITE
852 PROTOTYPE: $$$$$;$
853 CODE: 1507 PPCODE:
854{ 1508{
855 aio_req req;
856 STRLEN svlen; 1509 STRLEN svlen;
1510 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
857 char *svptr = SvPVbyte (data, svlen); 1511 char *svptr = SvPVbyte (data, svlen);
858 1512 UV len = SvUV (length);
859 SvUPGRADE (data, SVt_PV);
860 SvPOK_on (data);
861 1513
862 if (dataoffset < 0) 1514 if (dataoffset < 0)
863 dataoffset += svlen; 1515 dataoffset += svlen;
864 1516
865 if (dataoffset < 0 || dataoffset > svlen) 1517 if (dataoffset < 0 || dataoffset > svlen)
866 croak ("data offset outside of string"); 1518 croak ("dataoffset outside of data scalar");
867 1519
868 if (ix == REQ_WRITE) 1520 if (ix == EIO_WRITE)
869 { 1521 {
870 /* write: check length and adjust. */ 1522 /* write: check length and adjust. */
871 if (length < 0 || length + dataoffset > svlen) 1523 if (!SvOK (length) || len + dataoffset > svlen)
872 length = svlen - dataoffset; 1524 len = svlen - dataoffset;
873 } 1525 }
874 else 1526 else
875 { 1527 {
876 /* read: grow scalar as necessary */ 1528 /* read: check type and grow scalar as necessary */
1529 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
877 svptr = SvGROW (data, length + dataoffset); 1530 svptr = sv_grow (data, len + dataoffset + 1);
1531 else if (SvCUR (data) < len + dataoffset)
1532 croak ("length + dataoffset outside of scalar, and cannot grow");
878 } 1533 }
879
880 if (length < 0)
881 croak ("length must not be negative");
882 1534
883 { 1535 {
884 dREQ; 1536 dREQ;
885 1537
886 req->type = ix; 1538 req->type = ix;
887 req->fh = newSVsv (fh); 1539 req->sv1 = newSVsv (fh);
888 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1540 req->int1 = fd;
889 : IoOFP (sv_2io (fh))); 1541 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
890 req->offset = offset; 1542 req->size = len;
891 req->length = length;
892 req->data = SvREFCNT_inc (data); 1543 req->sv2 = SvREFCNT_inc (data);
893 req->dataptr = (char *)svptr + dataoffset; 1544 req->ptr2 = (char *)svptr + dataoffset;
1545 req->stroffset = dataoffset;
894 1546
895 if (!SvREADONLY (data)) 1547 if (!SvREADONLY (data))
896 { 1548 {
897 SvREADONLY_on (data); 1549 SvREADONLY_on (data);
898 req->data2ptr = (void *)data; 1550 req->flags |= FLAG_SV2_RO_OFF;
899 } 1551 }
900 1552
901 send_req (req); 1553 REQ_SEND;
902 } 1554 }
903} 1555}
904 1556
905void 1557void
906aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1558aio_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: 1559 ALIAS:
953 aio_stat = REQ_STAT 1560 aio_ioctl = EIO_IOCTL
954 aio_lstat = REQ_LSTAT 1561 aio_fcntl = EIO_FCNTL
955 CODE: 1562 PPCODE:
956{ 1563{
957 dREQ; 1564 int fd = s_fileno_croak (fh, 0);
1565 char *svptr;
958 1566
959 New (0, req->statdata, 1, Stat_t); 1567 if (SvPOK (arg) || !SvNIOK (arg))
960 if (!req->statdata)
961 { 1568 {
962 free_req (req); 1569 STRLEN svlen;
963 croak ("out of memory during aio_req->statdata allocation"); 1570 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
964 } 1571#ifdef IOCPARM_LEN
1572 STRLEN need = IOCPARM_LEN (request);
1573#else
1574 STRLEN need = 256;
1575#endif
965 1576
966 if (SvPOK (fh_or_path)) 1577 if (svlen < need)
967 { 1578 svptr = SvGROW (arg, need);
968 req->type = ix;
969 req->data = newSVsv (fh_or_path);
970 req->dataptr = SvPVbyte_nolen (req->data);
971 } 1579 }
972 else 1580 else
1581 svptr = (char *)SvIV (arg);
1582
973 { 1583 {
1584 dREQ;
1585
974 req->type = REQ_FSTAT; 1586 req->type = ix;
975 req->fh = newSVsv (fh_or_path); 1587 req->sv1 = newSVsv (fh);
976 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1588 req->int1 = fd;
1589 req->int2 = (long)request;
1590 req->sv2 = SvREFCNT_inc (arg);
1591 req->ptr2 = svptr;
1592
1593 REQ_SEND;
977 } 1594 }
978
979 send_req (req);
980} 1595}
981 1596
982void 1597void
983aio_unlink(pathname,callback=&PL_sv_undef) 1598aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
984 SV * pathname
985 SV * callback
986 ALIAS: 1599 ALIAS:
987 aio_unlink = REQ_UNLINK 1600 aio_readlink = EIO_READLINK
988 aio_rmdir = REQ_RMDIR 1601 aio_realpath = EIO_REALPATH
1602 PPCODE:
1603{
1604 dREQ;
1605
1606 req->type = ix;
1607 req_set_path1 (req, pathname);
1608
1609 REQ_SEND;
1610}
1611
1612void
1613aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1614 PPCODE:
1615{
1616 int ifd = s_fileno_croak (in_fh , 0);
1617 int ofd = s_fileno_croak (out_fh, 1);
1618 dREQ;
1619
1620 req->type = EIO_SENDFILE;
1621 req->sv1 = newSVsv (out_fh);
1622 req->int1 = ofd;
1623 req->sv2 = newSVsv (in_fh);
1624 req->int2 = ifd;
1625 req->offs = in_offset;
1626 req->size = length;
1627
1628 REQ_SEND;
1629}
1630
1631void
1632aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1633 PPCODE:
1634{
1635 int fd = s_fileno_croak (fh, 0);
1636 dREQ;
1637
1638 req->type = EIO_READAHEAD;
1639 req->sv1 = newSVsv (fh);
1640 req->int1 = fd;
1641 req->offs = offset;
1642 req->size = length;
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1649 ALIAS:
1650 aio_stat = EIO_STAT
1651 aio_lstat = EIO_LSTAT
1652 aio_statvfs = EIO_STATVFS
1653 PPCODE:
1654{
1655 dREQ;
1656
1657 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1658
1659 REQ_SEND;
1660}
1661
1662void
1663st_xtime ()
1664 ALIAS:
1665 st_atime = 0x01
1666 st_mtime = 0x02
1667 st_ctime = 0x04
1668 st_btime = 0x08
1669 st_xtime = 0x0f
1670 PPCODE:
1671 EXTEND (SP, 4);
1672 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1673 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1674 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1675 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1676
1677void
1678st_xtimensec ()
1679 ALIAS:
1680 st_atimensec = 0x01
1681 st_mtimensec = 0x02
1682 st_ctimensec = 0x04
1683 st_btimensec = 0x08
1684 st_xtimensec = 0x0f
1685 st_btimesec = 0x10
1686 st_gen = 0x20
1687 PPCODE:
1688 EXTEND (SP, 4);
1689 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1690 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1691 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1692 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1693 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1694 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1695
1696UV
1697major (UV dev)
1698 ALIAS:
1699 minor = 1
989 CODE: 1700 CODE:
1701 RETVAL = ix ? minor (dev) : major (dev);
1702 OUTPUT:
1703 RETVAL
1704
1705UV
1706makedev (UV maj, UV min)
1707 CODE:
1708 RETVAL = makedev (maj, min);
1709 OUTPUT:
1710 RETVAL
1711
1712void
1713aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1714 PPCODE:
1715{
1716 dREQ;
1717
1718 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1719 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1720 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1721
1722 REQ_SEND;
1723}
1724
1725void
1726aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1727 PPCODE:
1728{
1729 dREQ;
1730
1731 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1732 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1733
1734 REQ_SEND;
1735}
1736
1737void
1738aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1739 PPCODE:
1740{
1741 dREQ;
1742
1743 req->int2 = mode;
1744 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1745
1746 REQ_SEND;
1747}
1748
1749void
1750aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1751 PPCODE:
1752{
1753 dREQ;
1754
1755 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1756 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1757 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1758
1759 REQ_SEND;
1760}
1761
1762void
1763aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1764 PPCODE:
1765{
1766 dREQ;
1767
1768 req->type = EIO_READDIR;
1769 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1770
1771 if (flags & EIO_READDIR_DENTS)
1772 req->int1 |= EIO_READDIR_CUSTOM2;
1773
1774 req_set_path1 (req, pathname);
1775
1776 REQ_SEND;
1777}
1778
1779void
1780aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1781 PPCODE:
1782{
1783 dREQ;
1784
1785 req->type = EIO_MKDIR;
1786 req->int2 = mode;
1787 req_set_path1 (req, pathname);
1788
1789 REQ_SEND;
1790}
1791
1792void
1793aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1794 ALIAS:
1795 aio_unlink = EIO_UNLINK
1796 aio_rmdir = EIO_RMDIR
1797 aio_readdir = EIO_READDIR
1798 PPCODE:
990{ 1799{
991 dREQ; 1800 dREQ;
992 1801
993 req->type = ix; 1802 req->type = ix;
994 req->data = newSVsv (pathname); 1803 req_set_path1 (req, pathname);
995 req->dataptr = SvPVbyte_nolen (req->data);
996
997 send_req (req);
998}
999 1804
1805 REQ_SEND;
1806}
1807
1000void 1808void
1001aio_symlink(oldpath,newpath,callback=&PL_sv_undef) 1809aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1002 SV * oldpath 1810 ALIAS:
1003 SV * newpath 1811 aio_link = EIO_LINK
1004 SV * callback 1812 aio_symlink = EIO_SYMLINK
1813 aio_rename = EIO_RENAME
1005 CODE: 1814 PPCODE:
1006{ 1815{
1816 eio_wd wd2 = 0;
1007 dREQ; 1817 dREQ;
1008 1818
1009 req->type = REQ_SYMLINK; 1819 req->type = ix;
1010 req->fh = newSVsv (oldpath); 1820 req_set_path1 (req, oldpath);
1011 req->data2ptr = SvPVbyte_nolen (req->fh); 1821 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1012 req->data = newSVsv (newpath); 1822 req->int3 = (long)wd2;
1013 req->dataptr = SvPVbyte_nolen (req->data);
1014 1823
1015 send_req (req); 1824 REQ_SEND;
1016} 1825}
1017 1826
1018void 1827void
1019aio_readdir(pathname,callback=&PL_sv_undef) 1828aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1020 SV * pathname
1021 SV * callback
1022 CODE: 1829 PPCODE:
1023{ 1830{
1831 eio_wd wd2 = 0;
1024 dREQ; 1832 dREQ;
1025 1833
1026 req->type = REQ_READDIR; 1834 req->type = EIO_RENAME;
1027 req->data = newSVsv (pathname); 1835 req_set_path1 (req, oldpath);
1028 req->dataptr = SvPVbyte_nolen (req->data); 1836 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1837 req->int2 = flags;
1838 req->int3 = (long)wd2;
1029 1839
1030 send_req (req); 1840 REQ_SEND;
1031} 1841}
1032 1842
1033void 1843void
1034flush() 1844aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1035 PROTOTYPE: 1845 PPCODE:
1846{
1847 dREQ;
1848
1849 req->type = EIO_MKNOD;
1850 req->int2 = (mode_t)mode;
1851 req->offs = dev;
1852 req_set_path1 (req, pathname);
1853
1854 REQ_SEND;
1855}
1856
1857void
1858aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1859 ALIAS:
1860 aio_mtouch = EIO_MTOUCH
1861 aio_msync = EIO_MSYNC
1862 PPCODE:
1863{
1864 STRLEN svlen;
1865 char *svptr = SvPVbyte (data, svlen);
1866 UV len = SvUV (length);
1867
1868 if (flags < 0)
1869 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1870
1871 if (offset < 0)
1872 offset += svlen;
1873
1874 if (offset < 0 || offset > svlen)
1875 croak ("offset outside of scalar");
1876
1877 if (!SvOK (length) || len + offset > svlen)
1878 len = svlen - offset;
1879
1880 {
1881 dREQ;
1882
1883 req->type = ix;
1884 req->sv2 = SvREFCNT_inc (data);
1885 req->ptr2 = (char *)svptr + offset;
1886 req->size = len;
1887 req->int1 = flags;
1888
1889 REQ_SEND;
1890 }
1891}
1892
1893void
1894aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1895 PPCODE:
1896{
1897 STRLEN svlen;
1898 char *svptr = SvPVbyte (data, svlen);
1899 UV len = SvUV (length);
1900
1901 if (offset < 0)
1902 offset += svlen;
1903
1904 if (offset < 0 || offset > svlen)
1905 croak ("offset outside of scalar");
1906
1907 if (!SvOK (length) || len + offset > svlen)
1908 len = svlen - offset;
1909
1910 {
1911 dREQ;
1912
1913 req->type = EIO_MLOCK;
1914 req->sv2 = SvREFCNT_inc (data);
1915 req->ptr2 = (char *)svptr + offset;
1916 req->size = len;
1917
1918 REQ_SEND;
1919 }
1920}
1921
1922void
1923aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1924 PPCODE:
1925{
1926 dREQ;
1927
1928 req->type = EIO_MLOCKALL;
1929 req->int1 = flags;
1930
1931 REQ_SEND;
1932}
1933
1934void
1935aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1936 PPCODE:
1937{
1938 int fd = s_fileno_croak (fh, 0);
1939 dREQ;
1940
1941 req->type = EIO_CUSTOM;
1942 req->sv1 = newSVsv (fh);
1943 req->int1 = fd;
1944
1945 req->feed = fiemap;
1946#if HAVE_FIEMAP
1947 /* keep our fingers crossed that the next two types are 64 bit */
1948 req->offs = start;
1949 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1950 req->int2 = flags;
1951 req->int3 = SvOK (count) ? SvIV (count) : -1;
1952#endif
1953
1954 REQ_SEND;
1955}
1956
1957void
1958aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1959 PPCODE:
1960{
1961 char *svptr = 0;
1962
1963 sv_clear_foreign (data);
1964
1965 if (length) /* known length, directly read into scalar */
1966 {
1967 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1968 svptr = sv_grow (data, length + 1);
1969 else if (SvCUR (data) < length)
1970 croak ("length outside of scalar, and cannot grow");
1971 else
1972 svptr = SvPVbyte_nolen (data);
1973 }
1974
1975 {
1976 dREQ;
1977
1978 req->type = EIO_SLURP;
1979 req_set_path1 (req, pathname);
1980 req->offs = offset;
1981 req->size = length;
1982 req->sv2 = SvREFCNT_inc (data);
1983 req->ptr2 = svptr;
1984
1985 if (!SvREADONLY (data))
1986 {
1987 SvREADONLY_on (data);
1988 req->flags |= FLAG_SV2_RO_OFF;
1989 }
1990
1991 REQ_SEND;
1992 }
1993}
1994
1995void
1996aio_busy (double delay, SV *callback = &PL_sv_undef)
1997 PPCODE:
1998{
1999 dREQ;
2000
2001 req->type = EIO_BUSY;
2002 req->nv1 = delay < 0. ? 0. : delay;
2003
2004 REQ_SEND;
2005}
2006
2007void
2008aio_group (SV *callback = &PL_sv_undef)
2009 PPCODE:
2010{
2011 dREQ;
2012
2013 req->type = EIO_GROUP;
2014
2015 PUTBACK;
2016 req_submit (req);
2017 SPAGAIN;
2018
2019 XPUSHs (req_sv (req, aio_grp_stash));
2020}
2021
2022void
2023aio_nop (SV *callback = &PL_sv_undef)
2024 ALIAS:
2025 aio_nop = EIO_NOP
2026 aio_sync = EIO_SYNC
2027 PPCODE:
2028{
2029 dREQ;
2030
2031 req->type = ix;
2032
2033 REQ_SEND;
2034}
2035
2036int
2037aioreq_pri (int pri = NO_INIT)
1036 CODE: 2038 CODE:
2039 RETVAL = next_pri;
2040 if (items > 0)
2041 {
2042 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
2043 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
2044 next_pri = pri;
2045 }
2046 OUTPUT:
2047 RETVAL
2048
2049void
2050aioreq_nice (int nice = 0)
2051 CODE:
2052 nice = next_pri - nice;
2053 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
2054 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
2055 next_pri = nice;
2056
2057void
2058flush ()
2059 CODE:
1037 while (nreqs) 2060 while (eio_nreqs ())
1038 { 2061 {
1039 poll_wait (); 2062 poll_wait ();
1040 poll_cb (); 2063 poll_cb ();
1041 } 2064 }
1042 2065
1043void 2066int
1044poll() 2067poll ()
1045 PROTOTYPE:
1046 CODE: 2068 CODE:
1047 if (nreqs)
1048 {
1049 poll_wait (); 2069 poll_wait ();
1050 poll_cb (); 2070 RETVAL = poll_cb ();
1051 }
1052
1053int
1054poll_fileno()
1055 PROTOTYPE:
1056 CODE:
1057 RETVAL = respipe [0];
1058 OUTPUT: 2071 OUTPUT:
1059 RETVAL 2072 RETVAL
1060 2073
1061int 2074int
2075poll_fileno ()
2076 CODE:
2077 RETVAL = s_epipe_fd (&respipe);
2078 OUTPUT:
2079 RETVAL
2080
2081int
1062poll_cb(...) 2082poll_cb (...)
1063 PROTOTYPE: 2083 PROTOTYPE:
1064 CODE: 2084 CODE:
1065 RETVAL = poll_cb (); 2085 RETVAL = poll_cb ();
1066 OUTPUT: 2086 OUTPUT:
1067 RETVAL 2087 RETVAL
1068 2088
1069void 2089void
1070poll_wait() 2090poll_wait ()
1071 PROTOTYPE:
1072 CODE: 2091 CODE:
1073 if (nreqs)
1074 poll_wait (); 2092 poll_wait ();
1075 2093
1076int 2094int
1077nreqs() 2095nreqs ()
1078 PROTOTYPE:
1079 CODE: 2096 CODE:
1080 RETVAL = nreqs; 2097 RETVAL = eio_nreqs ();
1081 OUTPUT: 2098 OUTPUT:
1082 RETVAL 2099 RETVAL
1083 2100
2101int
2102nready ()
2103 CODE:
2104 RETVAL = eio_nready ();
2105 OUTPUT:
2106 RETVAL
2107
2108int
2109npending ()
2110 CODE:
2111 RETVAL = eio_npending ();
2112 OUTPUT:
2113 RETVAL
2114
2115int
2116nthreads ()
2117 CODE:
2118 RETVAL = eio_nthreads ();
2119 OUTPUT:
2120 RETVAL
2121
2122int
2123fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2124 CODE:
2125 RETVAL = posix_fadvise (fh, offset, length, advice);
2126 OUTPUT:
2127 RETVAL
2128
2129IV
2130sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2131 CODE:
2132 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2133 OUTPUT:
2134 RETVAL
2135
2136void
2137mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2138 PPCODE:
2139 sv_clear_foreign (scalar);
2140{
2141 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2142 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2143 if (addr == (void *)-1)
2144 XSRETURN_NO;
2145
2146 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2147
2148 if (!(prot & PROT_WRITE))
2149 SvREADONLY_on (scalar);
2150
2151 XSRETURN_YES;
2152}
2153
2154void
2155munmap (SV *scalar)
2156 CODE:
2157 sv_clear_foreign (scalar);
2158
2159SV *
2160mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2161 CODE:
2162{
2163 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2164 void *new;
2165
2166 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2167 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2168
2169 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2170
2171 RETVAL = &PL_sv_no;
2172
2173 if (new != (void *)-1)
2174 {
2175 RETVAL = new == (void *)mg->mg_ptr
2176 ? newSVpvn ("0 but true", 10)
2177 : &PL_sv_yes;
2178
2179 mg->mg_ptr = (char *)new;
2180 mg->mg_obj = (SV *)new_length;
2181
2182 SvPVX (scalar) = mg->mg_ptr;
2183 SvCUR_set (scalar, new_length);
2184 }
2185}
2186 OUTPUT:
2187 RETVAL
2188
2189int
2190madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2191 ALIAS:
2192 mprotect = 1
2193 CODE:
2194{
2195 STRLEN svlen;
2196 void *addr = SvPVbyte (scalar, svlen);
2197 STRLEN len = SvUV (length);
2198
2199 if (offset < 0)
2200 offset += svlen;
2201
2202 if (offset < 0 || offset > svlen)
2203 croak ("offset outside of scalar");
2204
2205 if (!SvOK (length) || len + offset > svlen)
2206 len = svlen - offset;
2207
2208 addr = (void *)(((intptr_t)addr) + offset);
2209 eio_page_align (&addr, &len);
2210
2211 switch (ix)
2212 {
2213 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2214 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2215 }
2216}
2217 OUTPUT:
2218 RETVAL
2219
2220int
2221munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2222 CODE:
2223{
2224 STRLEN svlen;
2225 void *addr = SvPVbyte (scalar, svlen);
2226 size_t len = SvUV (length);
2227
2228 if (offset < 0)
2229 offset += svlen;
2230
2231 if (offset < 0 || offset > svlen)
2232 croak ("offset outside of scalar");
2233
2234 if (!SvOK (length) || len + offset > svlen)
2235 len = svlen - offset;
2236
2237 addr = (void *)(((intptr_t)addr) + offset);
2238 eio_page_align (&addr, &len);
2239#if _POSIX_MEMLOCK_RANGE
2240 RETVAL = munlock (addr, len);
2241#else
2242 RETVAL = EIO_ENOSYS ();
2243#endif
2244}
2245 OUTPUT:
2246 RETVAL
2247
2248int
2249munlockall ()
2250 CODE:
2251#if _POSIX_MEMLOCK
2252 munlockall ();
2253#else
2254 RETVAL = EIO_ENOSYS ();
2255#endif
2256 OUTPUT:
2257 RETVAL
2258
2259int
2260splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2261 CODE:
2262{
2263#if HAVE_LINUX_SPLICE
2264 loff_t off_in_, off_out_;
2265 RETVAL = splice (
2266 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2267 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2268 length, flags
2269 );
2270#else
2271 RETVAL = EIO_ENOSYS ();
2272#endif
2273}
2274 OUTPUT:
2275 RETVAL
2276
2277int
2278tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2279 CODE:
2280#if HAVE_LINUX_SPLICE
2281 RETVAL = tee (rfh, wfh, length, flags);
2282#else
2283 RETVAL = EIO_ENOSYS ();
2284#endif
2285 OUTPUT:
2286 RETVAL
2287
2288int
2289pipesize (aio_rfd rfh, int new_size = -1)
2290 PROTOTYPE: $;$
2291 CODE:
2292#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2293 if (new_size >= 0)
2294 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2295 else
2296 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2297#else
2298 errno = ENOSYS;
2299 RETVAL = -1;
2300#endif
2301 OUTPUT:
2302 RETVAL
2303
2304void
2305pipe2 (int flags = 0)
2306 PROTOTYPE: ;$
2307 PPCODE:
2308{
2309 int fd[2];
2310 int res;
2311
2312 if (flags)
2313#if HAVE_PIPE2
2314 res = pipe2 (fd, flags);
2315#else
2316 res = (errno = ENOSYS, -1);
2317#endif
2318 else
2319 res = pipe (fd);
2320
2321 if (!res)
2322 {
2323 EXTEND (SP, 2);
2324 PUSHs (newmortalFH (fd[0], O_RDONLY));
2325 PUSHs (newmortalFH (fd[1], O_WRONLY));
2326 }
2327}
2328
2329void
2330eventfd (unsigned int initval = 0, int flags = 0)
2331 PPCODE:
2332{
2333 int fd;
2334#if HAVE_EVENTFD
2335 fd = eventfd (initval, flags);
2336#else
2337 fd = (errno = ENOSYS, -1);
2338#endif
2339
2340 XPUSHs (newmortalFH (fd, O_RDWR));
2341}
2342
2343void
2344timerfd_create (int clockid, int flags = 0)
2345 PPCODE:
2346{
2347 int fd;
2348#if HAVE_TIMERFD
2349 fd = timerfd_create (clockid, flags);
2350#else
2351 fd = (errno = ENOSYS, -1);
2352#endif
2353
2354 XPUSHs (newmortalFH (fd, O_RDWR));
2355}
2356
2357void
2358timerfd_settime (SV *fh, int flags, NV interval, NV value)
2359 PPCODE:
2360{
2361 int fd = s_fileno_croak (fh, 0);
2362#if HAVE_TIMERFD
2363 int res;
2364 struct itimerspec its, ots;
2365
2366 ts_set (&its.it_interval, interval);
2367 ts_set (&its.it_value , value);
2368 res = timerfd_settime (fd, flags, &its, &ots);
2369
2370 if (!res)
2371 {
2372 EXTEND (SP, 2);
2373 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2374 PUSHs (newSVnv (ts_get (&ots.it_value)));
2375 }
2376#else
2377 errno = ENOSYS;
2378#endif
2379}
2380
2381void
2382timerfd_gettime (SV *fh)
2383 PPCODE:
2384{
2385 int fd = s_fileno_croak (fh, 0);
2386#if HAVE_TIMERFD
2387 int res;
2388 struct itimerspec ots;
2389 res = timerfd_gettime (fd, &ots);
2390
2391 if (!res)
2392 {
2393 EXTEND (SP, 2);
2394 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2395 PUSHs (newSVnv (ts_get (&ots.it_value)));
2396 }
2397#else
2398 errno = ENOSYS;
2399#endif
2400}
2401
2402UV
2403get_fdlimit ()
2404 CODE:
2405#if HAVE_RLIMITS
2406 struct rlimit rl;
2407 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2408 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2409#endif
2410 XSRETURN_UNDEF;
2411 OUTPUT:
2412 RETVAL
2413
2414void
2415min_fdlimit (UV limit = 0x7fffffffU)
2416 CODE:
2417{
2418#if HAVE_RLIMITS
2419 struct rlimit rl;
2420 rlim_t orig_rlim_max;
2421 UV bit;
2422
2423 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2424 goto fail;
2425
2426 if (rl.rlim_cur == RLIM_INFINITY)
2427 XSRETURN_YES;
2428
2429 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2430
2431 if (rl.rlim_cur < limit)
2432 {
2433 rl.rlim_cur = limit;
2434
2435 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2436 rl.rlim_max = rl.rlim_cur;
2437 }
2438
2439 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2440 XSRETURN_YES;
2441
2442 if (errno == EPERM)
2443 {
2444 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2445 /* our limit overflows a system-wide limit */
2446 /* try an adaptive algorithm, but do not lower the hardlimit */
2447 rl.rlim_max = 0;
2448 for (bit = 0x40000000U; bit; bit >>= 1)
2449 {
2450 rl.rlim_max |= bit;
2451 rl.rlim_cur = rl.rlim_max;
2452
2453 /* nevr decrease the hard limit */
2454 if (rl.rlim_max < orig_rlim_max)
2455 break;
2456
2457 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2458 rl.rlim_max &= ~bit; /* too high, remove bit again */
2459 }
2460
2461 /* now, raise the soft limit to the max permitted */
2462 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2463 {
2464 rl.rlim_cur = rl.rlim_max;
2465 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2466 errno = EPERM;
2467 }
2468 }
2469#endif
2470 fail:
2471 XSRETURN_UNDEF;
2472}
2473
2474void _on_next_submit (SV *cb)
2475 CODE:
2476 SvREFCNT_dec (on_next_submit);
2477 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2478
2479PROTOTYPES: DISABLE
2480
2481MODULE = IO::AIO PACKAGE = IO::AIO::WD
2482
2483BOOT:
2484{
2485 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2486 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2487}
2488
2489void
2490DESTROY (SV *self)
2491 CODE:
2492{
2493 aio_wd wd = SvAIO_WD (self);
2494#if HAVE_AT
2495 {
2496 SV *callback = &PL_sv_undef;
2497 dREQ; /* clobbers next_pri :/ */
2498 next_pri = req->pri; /* restore next_pri */
2499 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2500 req->type = EIO_WD_CLOSE;
2501 req->wd = wd;
2502 REQ_SEND;
2503 }
2504#else
2505 eio_wd_close_sync (wd);
2506#endif
2507}
2508
2509MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2510
2511void
2512cancel (aio_req_ornot req)
2513 CODE:
2514 eio_cancel (req);
2515
2516void
2517cb (aio_req_ornot req, SV *callback = NO_INIT)
2518 PPCODE:
2519{
2520 if (GIMME_V != G_VOID)
2521 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2522
2523 if (items > 1)
2524 {
2525 SV *cb_cv = get_cb (callback);
2526
2527 SvREFCNT_dec (req->callback);
2528 req->callback = SvREFCNT_inc (cb_cv);
2529 }
2530}
2531
2532MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2533
2534void
2535add (aio_req grp, ...)
2536 PPCODE:
2537{
2538 int i;
2539
2540 if (grp->int1 == 2)
2541 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2542
2543 for (i = 1; i < items; ++i )
2544 {
2545 aio_req req;
2546
2547 if (GIMME_V != G_VOID)
2548 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2549
2550 req = SvAIO_REQ (ST (i));
2551
2552 if (req)
2553 eio_grp_add (grp, req);
2554 }
2555}
2556
2557void
2558cancel_subs (aio_req_ornot req)
2559 CODE:
2560 req_cancel_subs (req);
2561
2562void
2563result (aio_req grp, ...)
2564 CODE:
2565{
2566 int i;
2567 AV *av;
2568
2569 grp->errorno = errno;
2570
2571 av = newAV ();
2572 av_extend (av, items - 1);
2573
2574 for (i = 1; i < items; ++i )
2575 av_push (av, newSVsv (ST (i)));
2576
2577 SvREFCNT_dec (grp->sv1);
2578 grp->sv1 = (SV *)av;
2579}
2580
2581void
2582errno (aio_req grp, int errorno = errno)
2583 CODE:
2584 grp->errorno = errorno;
2585
2586void
2587limit (aio_req grp, int limit)
2588 CODE:
2589 eio_grp_limit (grp, limit);
2590
2591void
2592feed (aio_req grp, SV *callback = &PL_sv_undef)
2593 CODE:
2594{
2595 SvREFCNT_dec (grp->sv2);
2596 grp->sv2 = newSVsv (callback);
2597 grp->feed = aio_grp_feed;
2598
2599 if (grp->int2 <= 0)
2600 grp->int2 = 2;
2601
2602 eio_grp_limit (grp, grp->int2);
2603}
2604

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines