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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC vs.
Revision 1.274 by root, Sun Mar 10 12:16:48 2019 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
8#include "perliol.h"
16 9
17#include "autoconf/config.h" 10#if !defined mg_findext
18 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
19#include <pthread.h> 12#endif
20 13
21#include <stddef.h> 14#include <stddef.h>
15#include <stdlib.h>
22#include <errno.h> 16#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
26#include <sys/stat.h> 19#include <sys/stat.h>
27#include <limits.h> 20#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 21#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 22#include <sched.h>
32 23
33#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
34# if __linux 25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
35# include <sys/sendfile.h> 88 #include <sys/select.h>
36# elif __freebsd 89 #include <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
37# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
119# include <sys/mman.h>
120#endif
121
122#if HAVE_SYS_UIO_H
38# include <sys/uio.h> 123# include <sys/uio.h>
39# elif __hpux 124#endif
40# include <sys/socket.h> 125
41# elif __solaris /* not yet */ 126#if HAVE_ST_XTIMENSEC
127# define ATIMENSEC PL_statcache.st_atimensec
128# define MTIMENSEC PL_statcache.st_mtimensec
129# define CTIMENSEC PL_statcache.st_ctimensec
130#elif HAVE_ST_XTIMESPEC
131# define ATIMENSEC PL_statcache.st_atim.tv_nsec
132# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
133# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
134#else
135# define ATIMENSEC 0
136# define MTIMENSEC 0
137# define CTIMENSEC 0
138#endif
139
140#if HAVE_ST_BIRTHTIMENSEC
141# define BTIMESEC PL_statcache.st_birthtime
142# define BTIMENSEC PL_statcache.st_birthtimensec
143#elif HAVE_ST_BIRTHTIMESPEC
144# define BTIMESEC PL_statcache.st_birthtim.tv_sec
145# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
146#else
147# define BTIMESEC 0
148# define BTIMENSEC 0
149#endif
150
151#if HAVE_ST_GEN
152# define ST_GEN PL_statcache.st_gen
153#else
154# define ST_GEN 0
155#endif
156
157#include "schmorp.h"
158
159#if HAVE_EVENTFD
42# include <sys/sendfile.h> 160# include <sys/eventfd.h>
161#endif
162
163#if HAVE_TIMERFD
164# include <sys/timerfd.h>
165#endif
166
167#if HAVE_RLIMITS
168 #include <sys/time.h>
169 #include <sys/resource.h>
170#endif
171
172typedef SV SV8; /* byte-sv, used for argument-checking */
173typedef int aio_rfd; /* read file desriptor */
174typedef int aio_wfd; /* write file descriptor */
175
176static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
177
178#define EIO_REQ_MEMBERS \
179 SV *callback; \
180 SV *sv1, *sv2; \
181 SV *sv3, *sv4; \
182 STRLEN stroffset; \
183 SV *self;
184
185#define EIO_NO_WRAPPERS 1
186
187#include "libeio/eio.h"
188
189static int req_invoke (eio_req *req);
190#define EIO_FINISH(req) req_invoke (req)
191static void req_destroy (eio_req *grp);
192#define EIO_DESTROY(req) req_destroy (req)
193
194#include "libeio/eio.c"
195
196#if !HAVE_POSIX_FADVISE
197# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#if !HAVE_POSIX_MADVISE
201# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
202#endif
203
204#ifndef MAP_ANONYMOUS
205# ifdef MAP_ANON
206# define MAP_ANONYMOUS MAP_ANON
43# else 207# else
44# error sendfile support requested but not available 208# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 209# endif
46#endif 210#endif
47 211
48/* number of seconds after which idle threads exit */ 212#ifndef makedev
49#define IDLE_TIMEOUT 10 213# define makedev(maj,min) (((maj) << 8) | (min))
50
51/* used for struct dirent, AIX doesn't provide it */
52#ifndef NAME_MAX
53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif 214#endif
215#ifndef major
216# define major(dev) ((dev) >> 8)
79#endif 217#endif
218#ifndef minor
219# define minor(dev) ((dev) & 0xff)
220#endif
80 221
81/* buffer size for various temporary buffers */ 222/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
82#define AIO_BUFSIZE 65536 223#ifdef __sun
224# undef PAGESIZE
225#endif
83 226
84#define dBUF \ 227#if PAGESIZE <= 0
85 char *aio_buf; \ 228# define PAGESIZE sysconf (_SC_PAGESIZE)
86 LOCK (wrklock); \ 229#endif
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 230
88 UNLOCK (wrklock); \ 231/*****************************************************************************/
89 if (!aio_buf) \ 232
233#if !_POSIX_MAPPED_FILES
234# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
235# define munmap(addr,length) EIO_ENOSYS ()
236#endif
237
238#if !_POSIX_MEMORY_PROTECTION
239# define mprotect(addr,len,prot) EIO_ENOSYS ()
240#endif
241
242#if !MREMAP_MAYMOVE
243# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
244#endif
245
246#define FOREIGN_MAGIC PERL_MAGIC_ext
247
248static int ecb_cold
249mmap_free (pTHX_ SV *sv, MAGIC *mg)
250{
251 int old_errno = errno;
252 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
253 errno = old_errno;
254
255 mg->mg_obj = 0; /* just in case */
256
257 SvREADONLY_off (sv);
258
259 if (SvPVX (sv) != mg->mg_ptr)
260 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
261
262 SvCUR_set (sv, 0);
263 SvPVX (sv) = 0;
264 SvOK_off (sv);
265
90 return -1; 266 return 0;
267}
91 268
92typedef SV SV8; /* byte-sv, used for argument-checking */ 269static MGVTBL mmap_vtbl = {
93 270 0, 0, 0, 0, mmap_free
94enum {
95 REQ_QUIT,
96 REQ_OPEN, REQ_CLOSE,
97 REQ_READ, REQ_WRITE, REQ_READAHEAD,
98 REQ_SENDFILE,
99 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100 REQ_FSYNC, REQ_FDATASYNC,
101 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102 REQ_MKNOD, REQ_READDIR,
103 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104 REQ_GROUP, REQ_NOP,
105 REQ_BUSY,
106}; 271};
107 272
108#define AIO_REQ_KLASS "IO::AIO::REQ" 273static int ecb_cold
109#define AIO_GRP_KLASS "IO::AIO::GRP" 274sysfree_free (pTHX_ SV *sv, MAGIC *mg)
110
111typedef struct aio_cb
112{ 275{
113 struct aio_cb *volatile next; 276 free (mg->mg_ptr);
277 mg->mg_obj = 0; /* just in case */
114 278
115 SV *callback, *fh; 279 SvREADONLY_off (sv);
116 SV *sv1, *sv2;
117 void *ptr1, *ptr2;
118 off_t offs;
119 size_t size;
120 ssize_t result;
121 280
122 STRLEN stroffset; 281 if (SvPVX (sv) != mg->mg_ptr)
123 int type; 282 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
124 int int1, int2;
125 int errorno;
126 mode_t mode; /* open */
127 283
128 unsigned char flags; 284 SvCUR_set (sv, 0);
129 unsigned char pri; 285 SvPVX (sv) = 0;
286 SvOK_off (sv);
130 287
131 SV *self; /* the perl counterpart of this request, if any */ 288 return 0;
132 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 289}
133} aio_cb;
134 290
135enum { 291static MGVTBL sysfree_vtbl = {
136 FLAG_CANCELLED = 0x01, /* request was cancelled */ 292 0, 0, 0, 0, sysfree_free
137 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139}; 293};
140 294
141typedef aio_cb *aio_req; 295/*****************************************************************************/
142typedef aio_cb *aio_req_ornot;
143 296
144enum { 297/* helper: set scalar to foreign ptr with custom free */
145 PRI_MIN = -4, 298static void
146 PRI_MAX = 4, 299sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
147
148 DEFAULT_PRI = 0,
149 PRI_BIAS = -PRI_MIN,
150 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151};
152
153#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155static unsigned int max_poll_time = 0;
156static unsigned int max_poll_reqs = 0;
157
158/* calculcate time difference in ~1/AIO_TICKS of a second */
159static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160{ 300{
161 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 301 sv_force_normal (sv);
162 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
163}
164 302
165static int next_pri = DEFAULT_PRI + PRI_BIAS; 303 /* we store the length in mg_obj, as namlen is I32 :/ */
304 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
305 ->mg_obj = (SV *)length;
166 306
167static unsigned int started, idle, wanted; 307 SvUPGRADE (sv, SVt_PV); /* nop... */
168 308
169#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) 309 if (SvLEN (sv))
170# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP 310 Safefree (SvPVX (sv));
171#else
172# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173#endif
174 311
175#define LOCK(mutex) pthread_mutex_lock (&(mutex)) 312 SvPVX (sv) = (char *)addr;
176#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) 313 SvCUR_set (sv, length);
314 SvLEN_set (sv, 0);
315 SvPOK_only (sv);
316}
177 317
178/* worker threads management */ 318static void
179static pthread_mutex_t wrklock = AIO_MUTEX_INIT; 319sv_clear_foreign (SV *sv)
180
181typedef struct worker {
182 /* locked by wrklock */
183 struct worker *prev, *next;
184
185 pthread_t tid;
186
187 /* locked by reslock, reqlock or wrklock */
188 aio_req req; /* currently processed request */
189 void *dbuf;
190 DIR *dirp;
191} worker;
192
193static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195static void worker_clear (worker *wrk)
196{ 320{
197 if (wrk->dirp) 321 /* todo: iterate over magic and only free ours, but of course */
322 /* the perl5porters will call that (correct) behaviour buggy */
323 sv_unmagic (sv, FOREIGN_MAGIC);
324}
325
326/*****************************************************************************/
327
328/* defines all sorts of constants to 0 unless they are already defined */
329/* also provides const_iv_ and const_niv_ macros for them */
330#include "def0.h"
331
332/*****************************************************************************/
333
334static void
335fiemap (eio_req *req)
336{
337 req->result = -1;
338
339#if HAVE_FIEMAP
340 /* assume some c99 */
341 struct fiemap *fiemap = 0;
342 size_t end_offset;
343 int count = req->int3;
344
345 req->flags |= EIO_FLAG_PTR1_FREE;
346
347 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
348 /* increase in 3.5kb steps */
349 if (count < 0)
350 count = 8;
351
352 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
353 errno = ENOMEM;
354 if (!fiemap)
355 return;
356
357 req->ptr1 = fiemap;
358
359 fiemap->fm_start = req->offs;
360 fiemap->fm_length = req->size;
361 fiemap->fm_flags = req->int2;
362 fiemap->fm_extent_count = count;
363
364 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
365 return;
366
367 if (req->int3 >= 0 /* not autosizing */
368 || !fiemap->fm_mapped_extents /* no more extents */
369 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
370 goto done;
371
372 /* else we have to loop -
373 * it would be tempting (actually I tried that first) to just query the
374 * number of extents needed, but linux often feels like not returning all
375 * extents, without telling us it left any out. this complicates
376 * this quite a bit.
377 */
378
379 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
380
381 for (;;)
198 { 382 {
199 closedir (wrk->dirp); 383 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
200 wrk->dirp = 0; 384 char scratch[3072];
201 } 385 struct fiemap *incmap = (struct fiemap *)scratch;
202 386
203 if (wrk->dbuf) 387 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 388 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 389 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 390 incmap->fm_flags = fiemap->fm_flags;
207 } 391 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 392
210static void worker_free (worker *wrk) 393 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
211{
212 wrk->next->prev = wrk->prev;
213 wrk->prev->next = wrk->next;
214
215 free (wrk);
216}
217
218static volatile unsigned int nreqs, nready, npending;
219static volatile unsigned int max_idle = 4;
220static volatile unsigned int max_outstanding = 0xffffffff;
221static int respipe [2];
222
223static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227#if WORDACCESS_UNSAFE
228
229static unsigned int get_nready ()
230{
231 unsigned int retval;
232
233 LOCK (reqlock);
234 retval = nready;
235 UNLOCK (reqlock);
236
237 return retval;
238}
239
240static unsigned int get_npending ()
241{
242 unsigned int retval;
243
244 LOCK (reslock);
245 retval = npending;
246 UNLOCK (reslock);
247
248 return retval;
249}
250
251static unsigned int get_nthreads ()
252{
253 unsigned int retval;
254
255 LOCK (wrklock);
256 retval = started;
257 UNLOCK (wrklock);
258
259 return retval;
260}
261
262#else
263
264# define get_nready() nready
265# define get_npending() npending
266# define get_nthreads() started
267
268#endif
269
270/*
271 * a somewhat faster data structure might be nice, but
272 * with 8 priorities this actually needs <20 insns
273 * per shift, the most expensive operation.
274 */
275typedef struct {
276 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277 int size;
278} reqq;
279
280static reqq req_queue;
281static reqq res_queue;
282
283int reqq_push (reqq *q, aio_req req)
284{
285 int pri = req->pri;
286 req->next = 0;
287
288 if (q->qe[pri])
289 {
290 q->qe[pri]->next = req;
291 q->qe[pri] = req;
292 }
293 else
294 q->qe[pri] = q->qs[pri] = req;
295
296 return q->size++;
297}
298
299aio_req reqq_shift (reqq *q)
300{
301 int pri;
302
303 if (!q->size)
304 return 0; 394 return;
305 395
306 --q->size; 396 if (!incmap->fm_mapped_extents)
397 goto done;
307 398
308 for (pri = NUM_PRI; pri--; ) 399 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
309 { 400 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
310 aio_req req = q->qs[pri]; 401 errno = ENOMEM;
311
312 if (req) 402 if (!fiemap)
403 return;
404
405 req->ptr1 = fiemap;
406
407 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 408 {
314 if (!(q->qs[pri] = req->next)) 409 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 410
317 return req; 411 if (e->fe_logical + e->fe_length >= end_offset)
412 goto done;
413
414 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
415
416 if (e->fe_flags & FIEMAP_EXTENT_LAST)
417 goto done;
418
318 } 419 }
319 } 420 }
320 421
321 abort (); 422done:
322} 423 req->result = 0;
323 424
324static int poll_cb (); 425#else
325static void req_invoke (aio_req req); 426 errno = ENOSYS;
427#endif
428}
429
430/*****************************************************************************/
431
432static int close_fd; /* dummy fd to close fds via dup2 */
433
434enum {
435 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
436};
437
438typedef eio_req *aio_req;
439typedef eio_req *aio_req_ornot;
440typedef eio_wd aio_wd;
441
442static SV *on_next_submit;
443static int next_pri = EIO_PRI_DEFAULT;
444static int max_outstanding;
445
446static s_epipe respipe;
447
326static void req_free (aio_req req); 448static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 449static void req_cancel (aio_req req);
328 450
451static void
452want_poll (void)
453{
454 /* write a dummy byte to the pipe so fh becomes ready */
455 s_epipe_signal (&respipe);
456}
457
458static void
459done_poll (void)
460{
461 /* read any signals sent by the worker threads */
462 s_epipe_drain (&respipe);
463}
464
329/* must be called at most once */ 465/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 466static SV *
467req_sv (aio_req req, HV *stash)
331{ 468{
332 if (!req->self) 469 if (!req->self)
333 { 470 {
334 req->self = (SV *)newHV (); 471 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 472 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 473 }
337 474
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 475 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 476}
340 477
341static aio_req SvAIO_REQ (SV *sv) 478static SV *
479newSVaio_wd (aio_wd wd)
480{
481 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
482}
483
484static aio_req
485SvAIO_REQ (SV *sv)
342{ 486{
343 MAGIC *mg; 487 MAGIC *mg;
344 488
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 489 if (!SvROK (sv)
490 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
491 || (SvSTASH (SvRV (sv)) != aio_grp_stash
492 && SvSTASH (SvRV (sv)) != aio_req_stash
493 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 494 croak ("object of class IO::AIO::REQ expected");
347 495
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 496 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 497
350 return mg ? (aio_req)mg->mg_ptr : 0; 498 return mg ? (aio_req)mg->mg_ptr : 0;
351} 499}
352 500
501static aio_wd
502SvAIO_WD (SV *sv)
503{
504 if (!SvROK (sv)
505 || SvTYPE (SvRV (sv)) != SVt_PVMG
506 || SvSTASH (SvRV (sv)) != aio_wd_stash)
507 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
508
509 return (aio_wd)(long)SvIVX (SvRV (sv));
510}
511
512static SV *
513newmortalFH (int fd, int flags)
514{
515 if (fd < 0)
516 return &PL_sv_undef;
517
518 GV *gv = (GV *)sv_newmortal ();
519 char sym[64];
520 int symlen;
521
522 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
523 gv_init (gv, aio_stash, sym, symlen, 0);
524
525 symlen = snprintf (
526 sym,
527 sizeof (sym),
528 "%s&=%d",
529 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
530 fd
531 );
532
533 return do_open (gv, sym, symlen, 0, 0, 0, 0)
534 ? (SV *)gv : &PL_sv_undef;
535}
536
537static void
353static void aio_grp_feed (aio_req grp) 538aio_grp_feed (aio_req grp)
354{ 539{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 540 if (grp->sv2 && SvOK (grp->sv2))
356 { 541 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 542 dSP;
362 543
363 ENTER; 544 ENTER;
364 SAVETMPS; 545 SAVETMPS;
365 PUSHMARK (SP); 546 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 547 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 548 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 549 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 550 SPAGAIN;
370 FREETMPS; 551 FREETMPS;
371 LEAVE; 552 LEAVE;
372 }
373
374 /* stop if no progress has been made */
375 if (old_len == grp->size)
376 {
377 SvREFCNT_dec (grp->sv2);
378 grp->sv2 = 0;
379 break;
380 }
381 } 553 }
382} 554}
383 555
384static void aio_grp_dec (aio_req grp) 556static void
557req_submit (eio_req *req)
385{ 558{
386 --grp->size; 559 eio_submit (req);
387 560
388 /* call feeder, if applicable */ 561 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 562 {
394 req_invoke (grp); 563 dSP;
395 req_free (grp); 564 SV *cb = sv_2mortal (on_next_submit);
565
566 on_next_submit = 0;
567
568 PUSHMARK (SP);
569 PUTBACK;
570 call_sv (cb, G_DISCARD | G_EVAL);
396 } 571 }
397} 572}
398 573
574static int
399static void req_invoke (aio_req req) 575req_invoke (eio_req *req)
400{ 576{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 577 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 578 SvREADONLY_off (req->sv2);
405 579
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 580 if (!EIO_CANCELLED (req) && req->callback)
407 { 581 {
582 dSP;
583 static SV *sv_result_cache; /* caches the result integer SV */
584 SV *sv_result;
585
408 ENTER; 586 ENTER;
409 SAVETMPS; 587 SAVETMPS;
410 PUSHMARK (SP); 588 PUSHMARK (SP);
411 EXTEND (SP, 1); 589 EXTEND (SP, 1);
412 590
591 /* do not recreate the result IV from scratch each time */
592 if (expect_true (sv_result_cache))
593 {
594 sv_result = sv_result_cache; sv_result_cache = 0;
595 SvIV_set (sv_result, req->result);
596 SvIOK_only (sv_result);
597 }
598 else
599 {
600 sv_result = newSViv (req->result);
601 SvREADONLY_on (sv_result);
602 }
603
413 switch (req->type) 604 switch (req->type)
414 { 605 {
606 case EIO_WD_OPEN:
607 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
608 break;
609
415 case REQ_READDIR: 610 case EIO_READDIR:
416 { 611 {
417 SV *rv = &PL_sv_undef; 612 SV *rv = &PL_sv_undef;
418 613
419 if (req->result >= 0) 614 if (req->result >= 0)
420 { 615 {
421 int i; 616 int i;
422 char *buf = req->ptr2; 617 char *names = (char *)req->ptr2;
618 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 619 AV *av = newAV ();
424 620
425 av_extend (av, req->result - 1); 621 av_extend (av, req->result - 1);
426 622
427 for (i = 0; i < req->result; ++i) 623 for (i = 0; i < req->result; ++i)
428 { 624 {
429 SV *sv = newSVpv (buf, 0); 625 if (req->int1 & EIO_READDIR_DENTS)
626 {
627 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 628
629 if (req->int1 & EIO_READDIR_CUSTOM2)
630 {
631 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
632 AV *avent = newAV ();
633
634 av_extend (avent, 2);
635
636 if (!sv_type [ent->type])
637 {
638 sv_type [ent->type] = newSViv (ent->type);
639 SvREADONLY_on (sv_type [ent->type]);
640 }
641
642 av_store (avent, 0, namesv);
643 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
644 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
645
646 av_store (av, i, newRV_noinc ((SV *)avent));
647 }
648 else
431 av_store (av, i, sv); 649 av_store (av, i, namesv);
650
651 ++ent;
652 }
653 else
654 {
655 SV *name = newSVpv (names, 0);
656 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 657 names += SvCUR (name) + 1;
658 }
433 } 659 }
434 660
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 661 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 662 }
437 663
438 PUSHs (rv); 664 PUSHs (rv);
665
666 if (req->int1 & EIO_READDIR_CUSTOM1)
667 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 668 }
440 break; 669 break;
441 670
442 case REQ_OPEN: 671 case EIO_OPEN:
672 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
673 break;
674
675 case EIO_STATVFS:
676 case EIO_FSTATVFS:
443 { 677 {
444 /* convert fd to fh */ 678 SV *rv = &PL_sv_undef;
445 SV *fh; 679
680#ifndef _WIN32
681 if (req->result >= 0)
682 {
683 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
684 HV *hv = newHV ();
685 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
686 * chooses to make it a struct.
687 */
688 unsigned long fsid = 0;
689 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
446 690
447 PUSHs (sv_2mortal (newSViv (req->result))); 691 rv = sv_2mortal (newRV_noinc ((SV *)hv));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451 692
452 fh = POPs; 693 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
453 PUSHMARK (SP); 694 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
695 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
696 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
697 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
698 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
699 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
700 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
701 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
702 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
703 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
704 }
705#endif
706
454 XPUSHs (fh); 707 PUSHs (rv);
455 } 708 }
709
456 break; 710 break;
457 711
458 case REQ_GROUP: 712 case EIO_GROUP:
459 req->int1 = 2; /* mark group as finished */ 713 req->int1 = 2; /* mark group as finished */
460 714
461 if (req->sv1) 715 if (req->sv1)
462 { 716 {
463 int i; 717 int i;
… …
467 for (i = 0; i <= AvFILL (av); ++i) 721 for (i = 0; i <= AvFILL (av); ++i)
468 PUSHs (*av_fetch (av, i, 0)); 722 PUSHs (*av_fetch (av, i, 0));
469 } 723 }
470 break; 724 break;
471 725
472 case REQ_NOP: 726 case EIO_NOP:
473 case REQ_BUSY: 727 case EIO_BUSY:
474 break; 728 break;
475 729
476 case REQ_READLINK: 730 case EIO_READLINK:
731 case EIO_REALPATH:
477 if (req->result > 0) 732 if (req->result > 0)
733 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
734 break;
735
736 case EIO_STAT:
737 case EIO_LSTAT:
738 case EIO_FSTAT:
739 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
740
741 if (!(PL_laststatval = req->result))
742 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
743 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
744
745 PUSHs (sv_result);
746 break;
747
748 case EIO_SEEK:
749 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
750 break;
751
752 case EIO_READ:
753 {
754 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
755 *SvEND (req->sv2) = 0;
756 SvPOK_only (req->sv2);
757 SvSETMAGIC (req->sv2);
758 PUSHs (sv_result);
759 }
760 break;
761
762 case EIO_SLURP:
763 {
764 if (req->result >= 0)
765 {
766 /* if length was originally not known, we steal the malloc'ed memory */
767 if (req->flags & EIO_FLAG_PTR2_FREE)
768 {
769 req->flags &= ~EIO_FLAG_PTR2_FREE;
770 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
771 }
772 else
773 {
774 SvCUR_set (req->sv2, req->result);
775 *SvEND (req->sv2) = 0;
776 SvPOK_only (req->sv2);
777 }
778
779 SvSETMAGIC (req->sv2);
780 }
781
782 PUSHs (sv_result);
783 }
784 break;
785
786 case EIO_CUSTOM:
787 if (req->feed == fiemap)
478 { 788 {
479 SvCUR_set (req->sv1, req->result); 789#if HAVE_FIEMAP
480 *SvEND (req->sv1) = 0;
481 PUSHs (req->sv1); 790 if (!req->result)
791 {
792 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
793
794 if (fiemap->fm_extent_count)
795 {
796 AV *av = newAV ();
797 int i;
798
799 while (fiemap->fm_mapped_extents)
800 {
801 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
802 AV *ext_av = newAV ();
803
804 av_store (ext_av, 3, newSVuv (extent->fe_flags));
805 av_store (ext_av, 2, newSVval64 (extent->fe_length));
806 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
807 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
808
809 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
810 }
811
812 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
813 }
814 else
815 {
816 SvIV_set (sv_result, fiemap->fm_mapped_extents);
817 PUSHs (sv_result);
818 }
819 }
820#endif
482 } 821 }
822 else
823 PUSHs (sv_result);
483 break; 824 break;
484 825
485 case REQ_STAT: 826#if 0
486 case REQ_LSTAT: 827 case EIO_CLOSE:
487 case REQ_FSTAT: 828 PerlIOUnix_refcnt_dec (req->int1);
488 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
489 PL_laststatval = req->result;
490 PL_statcache = *(Stat_t *)(req->ptr2);
491 PUSHs (sv_2mortal (newSViv (req->result)));
492 break; 829 break;
830#endif
493 831
494 case REQ_READ: 832 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
495 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 833 if (req->result > 0)
496 *SvEND (req->sv1) = 0; 834 SvIV_set (sv_result, 0);
497 PUSHs (sv_2mortal (newSViv (req->result))); 835 /* FALLTHROUGH */
498 break;
499 836
500 default: 837 default:
501 PUSHs (sv_2mortal (newSViv (req->result))); 838 PUSHs (sv_result);
502 break; 839 break;
503 } 840 }
504 841
505 errno = req->errorno; 842 errno = req->errorno;
506 843
507 PUTBACK; 844 PUTBACK;
508 call_sv (req->callback, G_VOID | G_EVAL); 845 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509 SPAGAIN; 846 SPAGAIN;
847
848 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
849 SvREFCNT_dec (sv_result);
850 else
851 sv_result_cache = sv_result;
510 852
511 FREETMPS; 853 FREETMPS;
512 LEAVE; 854 LEAVE;
855
856 PUTBACK;
513 } 857 }
514 858
515 if (req->grp) 859 return !!SvTRUE (ERRSV);
516 {
517 aio_req grp = req->grp;
518
519 /* unlink request */
520 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
521 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
522
523 if (grp->grp_first == req)
524 grp->grp_first = req->grp_next;
525
526 aio_grp_dec (grp);
527 }
528
529 if (SvTRUE (ERRSV))
530 {
531 req_free (req);
532 croak (0);
533 }
534} 860}
535 861
536static void req_free (aio_req req) 862static void
863req_destroy (aio_req req)
537{ 864{
538 if (req->self) 865 if (req->self)
539 { 866 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 867 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 868 SvREFCNT_dec (req->self);
542 } 869 }
543 870
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 871 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 872 SvREFCNT_dec (req->sv2);
873 SvREFCNT_dec (req->sv3);
874 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 875 SvREFCNT_dec (req->callback);
548 876
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 877 free (req);
553} 878}
554 879
880static void
555static void req_cancel_subs (aio_req grp) 881req_cancel_subs (aio_req grp)
556{ 882{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 883 if (grp->type != EIO_GROUP)
560 return; 884 return;
561 885
562 SvREFCNT_dec (grp->sv2); 886 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 887 grp->sv2 = 0;
564 888
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 889 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 890}
568 891
569static void req_cancel (aio_req req) 892static void ecb_cold
893create_respipe (void)
570{ 894{
571 req->flags |= FLAG_CANCELLED; 895 if (s_epipe_renew (&respipe))
572 896 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 897}
575 898
576static void *aio_proc(void *arg); 899static void
577 900poll_wait (void)
578static void start_thread (void)
579{ 901{
580 sigset_t fullsigset, oldsigset;
581 pthread_attr_t attr;
582
583 worker *wrk = calloc (1, sizeof (worker));
584
585 if (!wrk)
586 croak ("unable to allocate worker thread data");
587
588 pthread_attr_init (&attr);
589 pthread_attr_setstacksize (&attr, STACKSIZE);
590 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
591#ifdef PTHREAD_SCOPE_PROCESS
592 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
593#endif
594
595 sigfillset (&fullsigset);
596
597 LOCK (wrklock);
598 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
599
600 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
601 {
602 wrk->prev = &wrk_first;
603 wrk->next = wrk_first.next;
604 wrk_first.next->prev = wrk;
605 wrk_first.next = wrk;
606 ++started;
607 }
608 else
609 free (wrk);
610
611 sigprocmask (SIG_SETMASK, &oldsigset, 0);
612 UNLOCK (wrklock);
613}
614
615static void maybe_start_thread ()
616{
617 if (get_nthreads () >= wanted)
618 return;
619
620 /* todo: maybe use idle here, but might be less exact */
621 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
622 return;
623
624 start_thread ();
625}
626
627static void req_send (aio_req req)
628{
629 ++nreqs;
630
631 LOCK (reqlock);
632 ++nready;
633 reqq_push (&req_queue, req);
634 pthread_cond_signal (&reqwait);
635 UNLOCK (reqlock);
636
637 maybe_start_thread ();
638}
639
640static void end_thread (void)
641{
642 aio_req req;
643
644 Newz (0, req, 1, aio_cb);
645
646 req->type = REQ_QUIT;
647 req->pri = PRI_MAX + PRI_BIAS;
648
649 LOCK (reqlock);
650 reqq_push (&req_queue, req);
651 pthread_cond_signal (&reqwait);
652 UNLOCK (reqlock);
653
654 LOCK (wrklock);
655 --started;
656 UNLOCK (wrklock);
657}
658
659static void set_max_idle (int nthreads)
660{
661 if (WORDACCESS_UNSAFE) LOCK (reqlock);
662 max_idle = nthreads <= 0 ? 1 : nthreads;
663 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
664}
665
666static void min_parallel (int nthreads)
667{
668 if (wanted < nthreads)
669 wanted = nthreads;
670}
671
672static void max_parallel (int nthreads)
673{
674 if (wanted > nthreads)
675 wanted = nthreads;
676
677 while (started > wanted)
678 end_thread ();
679}
680
681static void poll_wait ()
682{
683 fd_set rfd;
684
685 while (nreqs) 902 while (eio_nreqs ())
686 { 903 {
687 int size; 904 int size;
688 if (WORDACCESS_UNSAFE) LOCK (reslock); 905
906 X_LOCK (EIO_POOL->reslock);
689 size = res_queue.size; 907 size = EIO_POOL->res_queue.size;
690 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 908 X_UNLOCK (EIO_POOL->reslock);
691 909
692 if (size) 910 if (size)
693 return; 911 return;
694 912
695 maybe_start_thread (); 913 etp_maybe_start_thread (EIO_POOL);
696 914
697 FD_ZERO(&rfd); 915 s_epipe_wait (&respipe);
698 FD_SET(respipe [0], &rfd);
699
700 select (respipe [0] + 1, &rfd, 0, 0, 0);
701 } 916 }
702} 917}
703 918
704static int poll_cb () 919static int
920poll_cb (void)
705{ 921{
706 dSP;
707 int count = 0;
708 int maxreqs = max_poll_reqs;
709 int do_croak = 0;
710 struct timeval tv_start, tv_now;
711 aio_req req;
712
713 if (max_poll_time)
714 gettimeofday (&tv_start, 0);
715
716 for (;;) 922 for (;;)
717 { 923 {
718 for (;;) 924 int res = eio_poll ();
925
926 if (res > 0)
927 croak (0);
928
929 if (!max_outstanding || max_outstanding > eio_nreqs ())
930 return res;
931
932 poll_wait ();
933 }
934}
935
936static void ecb_cold
937reinit (void)
938{
939 create_respipe ();
940
941 if (eio_init (want_poll, done_poll) < 0)
942 croak ("IO::AIO: unable to initialise eio library");
943}
944
945/*****************************************************************************/
946
947static SV *
948get_cb (SV *cb_sv)
949{
950 SvGETMAGIC (cb_sv);
951 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
952}
953
954static aio_req ecb_noinline
955dreq (SV *callback)
956{
957 SV *cb_cv;
958 aio_req req;
959 int req_pri = next_pri;
960 next_pri = EIO_PRI_DEFAULT;
961
962 cb_cv = get_cb (callback);
963
964 req = calloc (sizeof (*req), 1);
965 if (!req)
966 croak ("out of memory during eio_req allocation");
967
968 req->callback = SvREFCNT_inc (cb_cv);
969 req->pri = req_pri;
970
971 return req;
972}
973
974#define dREQ \
975 aio_req req = dreq (callback); \
976
977#define REQ_SEND \
978 PUTBACK; \
979 req_submit (req); \
980 SPAGAIN; \
981 \
982 if (GIMME_V != G_VOID) \
983 XPUSHs (req_sv (req, aio_req_stash));
984
985ecb_inline void
986req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
987{
988 if (expect_false (SvROK (path)))
989 {
990 SV *rv = SvRV (path);
991 SV *wdob;
992
993 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
719 { 994 {
720 maybe_start_thread (); 995 path = AvARRAY (rv)[1];
996 wdob = AvARRAY (rv)[0];
721 997
722 LOCK (reslock); 998 if (SvOK (wdob))
723 req = reqq_shift (&res_queue);
724
725 if (req)
726 { 999 {
727 --npending; 1000 *wd = SvAIO_WD (wdob);
728 1001 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
729 if (!res_queue.size)
730 {
731 /* read any signals sent by the worker threads */
732 char buf [32];
733 while (read (respipe [0], buf, 32) == 32)
734 ;
735 }
736 }
737
738 UNLOCK (reslock);
739
740 if (!req)
741 break;
742
743 --nreqs;
744
745 if (req->type == REQ_GROUP && req->size)
746 {
747 req->int1 = 1; /* mark request as delayed */
748 continue;
749 } 1002 }
750 else 1003 else
751 { 1004 *wd = EIO_INVALID_WD;
752 req_invoke (req);
753
754 count++;
755 }
756
757 req_free (req);
758
759 if (maxreqs && !--maxreqs)
760 break;
761
762 if (max_poll_time)
763 {
764 gettimeofday (&tv_now, 0);
765
766 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
767 break;
768 }
769 } 1005 }
1006 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1007 {
1008 *wd = (aio_wd)(long)SvIVX (rv);
1009 *wdsv = SvREFCNT_inc_NN (rv);
1010 *ptr = ".";
1011 return; /* path set to "." */
1012 }
1013 else
1014 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1015 }
770 1016
771 if (nreqs <= max_outstanding) 1017 *pathsv = newSVsv (path);
1018 *ptr = SvPVbyte_nolen (*pathsv);
1019}
1020
1021static void ecb_noinline
1022req_set_path1 (aio_req req, SV *path)
1023{
1024 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1025}
1026
1027static void ecb_noinline
1028req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1029{
1030 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1031
1032 switch (SvTYPE (rv))
1033 {
1034 case SVt_PVIO:
1035 case SVt_PVLV:
1036 case SVt_PVGV:
1037 req->type = type_fh;
1038 req->sv1 = newSVsv (fh_or_path);
1039 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
772 break; 1040 break;
773 1041
774 poll_wait (); 1042 default:
775 1043 req->type = type_path;
776 ++maxreqs; 1044 req_set_path1 (req, fh_or_path);
1045 break;
777 } 1046 }
778
779 return count;
780}
781
782static void create_pipe ()
783{
784 if (pipe (respipe))
785 croak ("unable to initialize result pipe");
786
787 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
788 croak ("cannot set result pipe to nonblocking mode");
789
790 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
791 croak ("cannot set result pipe to nonblocking mode");
792} 1047}
793 1048
794/*****************************************************************************/ 1049/*****************************************************************************/
795/* work around various missing functions */
796 1050
797#if !HAVE_PREADWRITE 1051static void
798# define pread aio_pread 1052ts_set (struct timespec *ts, NV value)
799# define pwrite aio_pwrite
800
801/*
802 * make our pread/pwrite safe against themselves, but not against
803 * normal read/write by using a mutex. slows down execution a lot,
804 * but that's your problem, not mine.
805 */
806static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
807
808static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
809{ 1053{
810 ssize_t res; 1054 ts->tv_sec = value;
811 off_t ooffset; 1055 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
812
813 LOCK (preadwritelock);
814 ooffset = lseek (fd, 0, SEEK_CUR);
815 lseek (fd, offset, SEEK_SET);
816 res = read (fd, buf, count);
817 lseek (fd, ooffset, SEEK_SET);
818 UNLOCK (preadwritelock);
819
820 return res;
821} 1056}
822 1057
823static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1058static NV
1059ts_get (const struct timespec *ts)
824{ 1060{
825 ssize_t res; 1061 return ts->tv_sec + ts->tv_nsec * 1e-9;
826 off_t ooffset;
827
828 LOCK (preadwritelock);
829 ooffset = lseek (fd, 0, SEEK_CUR);
830 lseek (fd, offset, SEEK_SET);
831 res = write (fd, buf, count);
832 lseek (fd, offset, SEEK_SET);
833 UNLOCK (preadwritelock);
834
835 return res;
836} 1062}
837#endif
838 1063
839#if !HAVE_FDATASYNC 1064/*****************************************************************************/
840# define fdatasync fsync
841#endif
842 1065
843#if !HAVE_READAHEAD 1066XS(boot_IO__AIO) ecb_cold;
844# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
845 1067
846static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1068MODULE = IO::AIO PACKAGE = IO::AIO
847{
848 dBUF;
849 1069
850 while (count > 0) 1070PROTOTYPES: ENABLE
851 {
852 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
853 1071
854 pread (fd, aio_buf, len, offset); 1072BOOT:
855 offset += len;
856 count -= len;
857 }
858
859 errno = 0;
860}
861
862#endif
863
864#if !HAVE_READDIR_R
865# define readdir_r aio_readdir_r
866
867static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
868
869static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
870{ 1073{
871 struct dirent *e; 1074 static const struct {
872 int errorno; 1075 const char *name;
1076 IV iv;
1077 } *civ, const_iv[] = {
1078# define const_niv(name, value) { # name, (IV) value },
1079# define const_iv(name) { # name, (IV) name },
1080# define const_eio(name) { # name, (IV) EIO_ ## name },
873 1081
874 LOCK (readdirlock); 1082 /* you have to re-run ./gendef0 after adding/removing any constants here */
1083 /* the first block can be undef if missing */
1084 const_iv (ENOSYS)
1085 const_iv (EXDEV)
1086 const_iv (EBADR)
875 1087
876 e = readdir (dirp); 1088 /* for lseek */
877 errorno = errno; 1089 const_iv (SEEK_DATA)
1090 const_iv (SEEK_HOLE)
878 1091
879 if (e) 1092 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
880 { 1093 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
881 *res = ent; 1094 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
882 strcpy (ent->d_name, e->d_name); 1095 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
883 } 1096 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
884 else 1097 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
885 *res = 0;
886 1098
887 UNLOCK (readdirlock); 1099 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1100 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1101 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1102 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1103 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
888 1104
889 errno = errorno; 1105 /* the second block will be 0 when missing */
890 return e ? 0 : -1; 1106 const_iv (O_ACCMODE)
891}
892#endif
893 1107
894/* sendfile always needs emulation */ 1108 const_iv (O_RDONLY)
895static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1109 const_iv (O_WRONLY)
896{ 1110 const_iv (O_RDWR)
897 ssize_t res; 1111 const_iv (O_CREAT)
1112 const_iv (O_TRUNC)
1113 const_iv (O_EXCL)
1114 const_iv (O_APPEND)
898 1115
899 if (!count) 1116 const_iv (O_ASYNC)
900 return 0; 1117 const_iv (O_DIRECT)
1118 const_iv (O_NOATIME)
901 1119
902#if HAVE_SENDFILE 1120 const_iv (O_CLOEXEC)
903# if __linux 1121 const_iv (O_NOCTTY)
904 res = sendfile (ofd, ifd, &offset, count); 1122 const_iv (O_NOFOLLOW)
1123 const_iv (O_NONBLOCK)
1124 const_iv (O_EXEC)
1125 const_iv (O_SEARCH)
1126 const_iv (O_DIRECTORY)
1127 const_iv (O_DSYNC)
1128 const_iv (O_RSYNC)
1129 const_iv (O_SYNC)
1130 const_iv (O_PATH)
1131 const_iv (O_TMPFILE)
1132 const_iv (O_TTY_INIT)
905 1133
906# elif __freebsd 1134 const_iv (S_IFIFO)
907 /* 1135 const_iv (S_IFCHR)
908 * Of course, the freebsd sendfile is a dire hack with no thoughts 1136 const_iv (S_IFBLK)
909 * wasted on making it similar to other I/O functions. 1137 const_iv (S_IFLNK)
910 */ 1138 const_iv (S_IFREG)
1139 const_iv (S_IFDIR)
1140 const_iv (S_IFWHT)
1141 const_iv (S_IFSOCK)
1142 const_iv (S_IFMT)
1143
1144 const_iv (ST_RDONLY)
1145 const_iv (ST_NOSUID)
1146 const_iv (ST_NODEV)
1147 const_iv (ST_NOEXEC)
1148 const_iv (ST_SYNCHRONOUS)
1149 const_iv (ST_MANDLOCK)
1150 const_iv (ST_WRITE)
1151 const_iv (ST_APPEND)
1152 const_iv (ST_IMMUTABLE)
1153 const_iv (ST_NOATIME)
1154 const_iv (ST_NODIRATIME)
1155 const_iv (ST_RELATIME)
1156
1157 const_iv (PROT_NONE)
1158 const_iv (PROT_EXEC)
1159 const_iv (PROT_READ)
1160 const_iv (PROT_WRITE)
1161
1162 const_iv (MAP_PRIVATE)
1163 const_iv (MAP_SHARED)
1164 const_iv (MAP_FIXED)
1165 const_iv (MAP_ANONYMOUS)
1166
1167 /* linuxish */
1168 const_iv (MAP_LOCKED)
1169 const_iv (MAP_NORESERVE)
1170 const_iv (MAP_POPULATE)
1171 const_iv (MAP_NONBLOCK)
1172 const_iv (MAP_GROWSDOWN)
1173 const_iv (MAP_32BIT)
1174 const_iv (MAP_HUGETLB)
1175 const_iv (MAP_STACK)
1176
1177 const_iv (MREMAP_MAYMOVE)
1178 const_iv (MREMAP_FIXED)
1179
1180 const_iv (F_DUPFD_CLOEXEC)
1181
1182 const_iv (MSG_CMSG_CLOEXEC)
1183 const_iv (SOCK_CLOEXEC)
1184
1185 const_iv (F_OFD_GETLK)
1186 const_iv (F_OFD_SETLK)
1187 const_iv (F_OFD_GETLKW)
1188
1189 const_iv (FIFREEZE)
1190 const_iv (FITHAW)
1191 const_iv (FITRIM)
1192 const_iv (FICLONE)
1193 const_iv (FICLONERANGE)
1194 const_iv (FIDEDUPERANGE)
1195
1196 const_iv (FS_IOC_GETFLAGS)
1197 const_iv (FS_IOC_SETFLAGS)
1198 const_iv (FS_IOC_GETVERSION)
1199 const_iv (FS_IOC_SETVERSION)
1200 const_iv (FS_IOC_FIEMAP)
1201 const_iv (FS_IOC_FSGETXATTR)
1202 const_iv (FS_IOC_FSSETXATTR)
1203 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1204 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1205 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1206
1207 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1208
1209 const_iv (FS_SECRM_FL)
1210 const_iv (FS_UNRM_FL)
1211 const_iv (FS_COMPR_FL)
1212 const_iv (FS_SYNC_FL)
1213 const_iv (FS_IMMUTABLE_FL)
1214 const_iv (FS_APPEND_FL)
1215 const_iv (FS_NODUMP_FL)
1216 const_iv (FS_NOATIME_FL)
1217 const_iv (FS_DIRTY_FL)
1218 const_iv (FS_COMPRBLK_FL)
1219 const_iv (FS_NOCOMP_FL)
1220 const_iv (FS_ENCRYPT_FL)
1221 const_iv (FS_BTREE_FL)
1222 const_iv (FS_INDEX_FL)
1223 const_iv (FS_JOURNAL_DATA_FL)
1224 const_iv (FS_NOTAIL_FL)
1225 const_iv (FS_DIRSYNC_FL)
1226 const_iv (FS_TOPDIR_FL)
1227 const_iv (FS_FL_USER_MODIFIABLE)
1228
1229 const_iv (FS_XFLAG_REALTIME)
1230 const_iv (FS_XFLAG_PREALLOC)
1231 const_iv (FS_XFLAG_IMMUTABLE)
1232 const_iv (FS_XFLAG_APPEND)
1233 const_iv (FS_XFLAG_SYNC)
1234 const_iv (FS_XFLAG_NOATIME)
1235 const_iv (FS_XFLAG_NODUMP)
1236 const_iv (FS_XFLAG_RTINHERIT)
1237 const_iv (FS_XFLAG_PROJINHERIT)
1238 const_iv (FS_XFLAG_NOSYMLINKS)
1239 const_iv (FS_XFLAG_EXTSIZE)
1240 const_iv (FS_XFLAG_EXTSZINHERIT)
1241 const_iv (FS_XFLAG_NODEFRAG)
1242 const_iv (FS_XFLAG_FILESTREAM)
1243 const_iv (FS_XFLAG_DAX)
1244 const_iv (FS_XFLAG_HASATTR)
1245
1246 const_iv (FIEMAP_FLAG_SYNC)
1247 const_iv (FIEMAP_FLAG_XATTR)
1248 const_iv (FIEMAP_FLAGS_COMPAT)
1249 const_iv (FIEMAP_EXTENT_LAST)
1250 const_iv (FIEMAP_EXTENT_UNKNOWN)
1251 const_iv (FIEMAP_EXTENT_DELALLOC)
1252 const_iv (FIEMAP_EXTENT_ENCODED)
1253 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1254 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1255 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1256 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1257 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1258 const_iv (FIEMAP_EXTENT_MERGED)
1259 const_iv (FIEMAP_EXTENT_SHARED)
1260
1261 const_iv (SPLICE_F_MOVE)
1262 const_iv (SPLICE_F_NONBLOCK)
1263 const_iv (SPLICE_F_MORE)
1264 const_iv (SPLICE_F_GIFT)
1265
1266 const_iv (EFD_CLOEXEC)
1267 const_iv (EFD_NONBLOCK)
1268 const_iv (EFD_SEMAPHORE)
1269
1270 const_iv (CLOCK_REALTIME)
1271 const_iv (CLOCK_MONOTONIC)
1272 const_iv (CLOCK_BOOTTIME)
1273 const_iv (CLOCK_REALTIME_ALARM)
1274 const_iv (CLOCK_BOOTTIME_ALARM)
1275
1276 const_iv (TFD_NONBLOCK)
1277 const_iv (TFD_CLOEXEC)
1278
1279 const_iv (TFD_TIMER_ABSTIME)
1280 const_iv (TFD_TIMER_CANCEL_ON_SET)
1281
1282 /* these are libeio constants, and are independent of gendef0 */
1283 const_eio (SEEK_SET)
1284 const_eio (SEEK_CUR)
1285 const_eio (SEEK_END)
1286
1287 const_eio (MCL_FUTURE)
1288 const_eio (MCL_CURRENT)
1289 const_eio (MCL_ONFAULT)
1290
1291 const_eio (MS_ASYNC)
1292 const_eio (MS_INVALIDATE)
1293 const_eio (MS_SYNC)
1294
1295 const_eio (MT_MODIFY)
1296
1297 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1298 const_eio (SYNC_FILE_RANGE_WRITE)
1299 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1300
1301 const_eio (FALLOC_FL_KEEP_SIZE)
1302 const_eio (FALLOC_FL_PUNCH_HOLE)
1303 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1304 const_eio (FALLOC_FL_ZERO_RANGE)
1305 const_eio (FALLOC_FL_INSERT_RANGE)
1306 const_eio (FALLOC_FL_UNSHARE_RANGE)
1307
1308 const_eio (RENAME_NOREPLACE)
1309 const_eio (RENAME_EXCHANGE)
1310 const_eio (RENAME_WHITEOUT)
1311
1312 const_eio (READDIR_DENTS)
1313 const_eio (READDIR_DIRS_FIRST)
1314 const_eio (READDIR_STAT_ORDER)
1315 const_eio (READDIR_FOUND_UNKNOWN)
1316
1317 const_eio (DT_UNKNOWN)
1318 const_eio (DT_FIFO)
1319 const_eio (DT_CHR)
1320 const_eio (DT_DIR)
1321 const_eio (DT_BLK)
1322 const_eio (DT_REG)
1323 const_eio (DT_LNK)
1324 const_eio (DT_SOCK)
1325 const_eio (DT_WHT)
1326 };
1327
1328 aio_stash = gv_stashpv ("IO::AIO" , 1);
1329 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1330 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1331 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1332
1333 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1334 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1335
1336 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1337
1338 /* allocate dummy pipe fd for aio_close */
911 { 1339 {
912 off_t sbytes; 1340 int pipefd [2];
913 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
914 1341
915 if (res < 0 && sbytes) 1342 if (
916 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1343#ifdef _WIN32
917 res = sbytes; 1344 _pipe (pipefd, 1, _O_BINARY) < 0
1345#else
1346 pipe (pipefd) < 0
1347 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1348#endif
1349 || close (pipefd [1]) < 0
1350 )
1351 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1352
1353 close_fd = pipefd [0];
918 } 1354 }
919 1355
920# elif __hpux 1356 reinit ();
921 res = sendfile (ofd, ifd, offset, count, 0, 0);
922
923# elif __solaris
924 {
925 struct sendfilevec vec;
926 size_t sbytes;
927
928 vec.sfv_fd = ifd;
929 vec.sfv_flag = 0;
930 vec.sfv_off = offset;
931 vec.sfv_len = count;
932
933 res = sendfilev (ofd, &vec, 1, &sbytes);
934
935 if (res < 0 && sbytes)
936 res = sbytes;
937 }
938
939# endif
940#else
941 res = -1;
942 errno = ENOSYS;
943#endif
944
945 if (res < 0
946 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
947#if __solaris
948 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
949#endif
950 )
951 )
952 {
953 /* emulate sendfile. this is a major pain in the ass */
954 dBUF;
955
956 res = 0;
957
958 while (count)
959 {
960 ssize_t cnt;
961
962 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
963
964 if (cnt <= 0)
965 {
966 if (cnt && !res) res = -1;
967 break;
968 }
969
970 cnt = write (ofd, aio_buf, cnt);
971
972 if (cnt <= 0)
973 {
974 if (cnt && !res) res = -1;
975 break;
976 }
977
978 offset += cnt;
979 res += cnt;
980 count -= cnt;
981 }
982 }
983
984 return res;
985} 1357}
986 1358
987/* read a full directory */
988static void scandir_ (aio_req req, worker *self)
989{
990 DIR *dirp;
991 union
992 {
993 struct dirent d;
994 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
995 } *u;
996 struct dirent *entp;
997 char *name, *names;
998 int memlen = 4096;
999 int memofs = 0;
1000 int res = 0;
1001 int errorno;
1002
1003 LOCK (wrklock);
1004 self->dirp = dirp = opendir (req->ptr1);
1005 self->dbuf = u = malloc (sizeof (*u));
1006 req->flags |= FLAG_PTR2_FREE;
1007 req->ptr2 = names = malloc (memlen);
1008 UNLOCK (wrklock);
1009
1010 if (dirp && u && names)
1011 for (;;)
1012 {
1013 errno = 0;
1014 readdir_r (dirp, &u->d, &entp);
1015
1016 if (!entp)
1017 break;
1018
1019 name = entp->d_name;
1020
1021 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1022 {
1023 int len = strlen (name) + 1;
1024
1025 res++;
1026
1027 while (memofs + len > memlen)
1028 {
1029 memlen *= 2;
1030 LOCK (wrklock);
1031 req->ptr2 = names = realloc (names, memlen);
1032 UNLOCK (wrklock);
1033
1034 if (!names)
1035 break;
1036 }
1037
1038 memcpy (names + memofs, name, len);
1039 memofs += len;
1040 }
1041 }
1042
1043 if (errno)
1044 res = -1;
1045
1046 req->result = res;
1047}
1048
1049/*****************************************************************************/
1050
1051static void *aio_proc (void *thr_arg)
1052{
1053 aio_req req;
1054 struct timespec ts;
1055 worker *self = (worker *)thr_arg;
1056
1057 /* try to distribute timeouts somewhat evenly */
1058 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1059 * (1000000000UL / 1024UL);
1060
1061 for (;;)
1062 {
1063 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1064
1065 LOCK (reqlock);
1066
1067 for (;;)
1068 {
1069 self->req = req = reqq_shift (&req_queue);
1070
1071 if (req)
1072 break;
1073
1074 ++idle;
1075
1076 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1077 == ETIMEDOUT)
1078 {
1079 if (idle > max_idle)
1080 {
1081 --idle;
1082 UNLOCK (reqlock);
1083 LOCK (wrklock);
1084 --started;
1085 UNLOCK (wrklock);
1086 goto quit;
1087 }
1088
1089 /* we are allowed to idle, so do so without any timeout */
1090 pthread_cond_wait (&reqwait, &reqlock);
1091 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1092 }
1093
1094 --idle;
1095 }
1096
1097 --nready;
1098
1099 UNLOCK (reqlock);
1100
1101 errno = 0; /* strictly unnecessary */
1102
1103 if (!(req->flags & FLAG_CANCELLED))
1104 switch (req->type)
1105 {
1106 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1107 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1108
1109 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1110 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1111
1112 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1113 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1114 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1115
1116 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1117 case REQ_CLOSE: req->result = close (req->int1); break;
1118 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1119 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1120 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1121 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1122 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1123 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1124 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1125
1126 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1127 case REQ_FSYNC: req->result = fsync (req->int1); break;
1128 case REQ_READDIR: scandir_ (req, self); break;
1129
1130 case REQ_BUSY:
1131 {
1132 struct timeval tv;
1133
1134 tv.tv_sec = req->int1;
1135 tv.tv_usec = req->int2;
1136
1137 req->result = select (0, 0, 0, 0, &tv);
1138 }
1139
1140 case REQ_GROUP:
1141 case REQ_NOP:
1142 break;
1143
1144 case REQ_QUIT:
1145 goto quit;
1146
1147 default:
1148 req->result = ENOSYS;
1149 break;
1150 }
1151
1152 req->errorno = errno;
1153
1154 LOCK (reslock);
1155
1156 ++npending;
1157
1158 if (!reqq_push (&res_queue, req))
1159 /* write a dummy byte to the pipe so fh becomes ready */
1160 write (respipe [1], &respipe, 1);
1161
1162 self->req = 0;
1163 worker_clear (self);
1164
1165 UNLOCK (reslock);
1166 }
1167
1168quit:
1169 LOCK (wrklock);
1170 worker_free (self);
1171 UNLOCK (wrklock);
1172
1173 return 0;
1174}
1175
1176/*****************************************************************************/
1177
1178static void atfork_prepare (void)
1179{
1180 LOCK (wrklock);
1181 LOCK (reqlock);
1182 LOCK (reslock);
1183#if !HAVE_PREADWRITE
1184 LOCK (preadwritelock);
1185#endif
1186#if !HAVE_READDIR_R
1187 LOCK (readdirlock);
1188#endif
1189}
1190
1191static void atfork_parent (void)
1192{
1193#if !HAVE_READDIR_R
1194 UNLOCK (readdirlock);
1195#endif
1196#if !HAVE_PREADWRITE
1197 UNLOCK (preadwritelock);
1198#endif
1199 UNLOCK (reslock);
1200 UNLOCK (reqlock);
1201 UNLOCK (wrklock);
1202}
1203
1204static void atfork_child (void)
1205{
1206 aio_req prv;
1207
1208 while (prv = reqq_shift (&req_queue))
1209 req_free (prv);
1210
1211 while (prv = reqq_shift (&res_queue))
1212 req_free (prv);
1213
1214 while (wrk_first.next != &wrk_first)
1215 {
1216 worker *wrk = wrk_first.next;
1217
1218 if (wrk->req)
1219 req_free (wrk->req);
1220
1221 worker_clear (wrk);
1222 worker_free (wrk);
1223 }
1224
1225 started = 0;
1226 idle = 0;
1227 nreqs = 0;
1228 nready = 0;
1229 npending = 0;
1230
1231 close (respipe [0]);
1232 close (respipe [1]);
1233 create_pipe ();
1234
1235 atfork_parent ();
1236}
1237
1238#define dREQ \
1239 aio_req req; \
1240 int req_pri = next_pri; \
1241 next_pri = DEFAULT_PRI + PRI_BIAS; \
1242 \
1243 if (SvOK (callback) && !SvROK (callback)) \
1244 croak ("callback must be undef or of reference type"); \
1245 \
1246 Newz (0, req, 1, aio_cb); \
1247 if (!req) \
1248 croak ("out of memory during aio_req allocation"); \
1249 \
1250 req->callback = newSVsv (callback); \
1251 req->pri = req_pri
1252
1253#define REQ_SEND \
1254 req_send (req); \
1255 \
1256 if (GIMME_V != G_VOID) \
1257 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1258
1259MODULE = IO::AIO PACKAGE = IO::AIO
1260
1261PROTOTYPES: ENABLE
1262
1263BOOT:
1264{
1265 HV *stash = gv_stashpv ("IO::AIO", 1);
1266
1267 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1268 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1269 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1270 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1271 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1272 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1273
1274 create_pipe ();
1275 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1276}
1277
1278void 1359void
1360reinit ()
1361 PROTOTYPE:
1362
1363void
1279max_poll_reqs (int nreqs) 1364max_poll_reqs (unsigned int nreqs)
1280 PROTOTYPE: $ 1365 PROTOTYPE: $
1281 CODE: 1366 CODE:
1282 max_poll_reqs = nreqs; 1367 eio_set_max_poll_reqs (nreqs);
1283 1368
1284void 1369void
1285max_poll_time (double nseconds) 1370max_poll_time (double nseconds)
1286 PROTOTYPE: $ 1371 PROTOTYPE: $
1287 CODE: 1372 CODE:
1288 max_poll_time = nseconds * AIO_TICKS; 1373 eio_set_max_poll_time (nseconds);
1289 1374
1290void 1375void
1291min_parallel (int nthreads) 1376min_parallel (unsigned int nthreads)
1292 PROTOTYPE: $
1293
1294void
1295max_parallel (int nthreads)
1296 PROTOTYPE: $
1297
1298void
1299max_idle (int nthreads)
1300 PROTOTYPE: $ 1377 PROTOTYPE: $
1301 CODE: 1378 CODE:
1302 set_max_idle (nthreads); 1379 eio_set_min_parallel (nthreads);
1303 1380
1304int 1381void
1305max_outstanding (int maxreqs) 1382max_parallel (unsigned int nthreads)
1306 PROTOTYPE: $ 1383 PROTOTYPE: $
1307 CODE: 1384 CODE:
1308 RETVAL = max_outstanding; 1385 eio_set_max_parallel (nthreads);
1386
1387void
1388max_idle (unsigned int nthreads)
1389 PROTOTYPE: $
1390 CODE:
1391 eio_set_max_idle (nthreads);
1392
1393void
1394idle_timeout (unsigned int seconds)
1395 PROTOTYPE: $
1396 CODE:
1397 eio_set_idle_timeout (seconds);
1398
1399void
1400max_outstanding (unsigned int maxreqs)
1401 PROTOTYPE: $
1402 CODE:
1309 max_outstanding = maxreqs; 1403 max_outstanding = maxreqs;
1310 OUTPUT:
1311 RETVAL
1312 1404
1313void 1405void
1314aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1406aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1315 SV8 * pathname
1316 int flags
1317 int mode
1318 SV * callback
1319 PROTOTYPE: $$$;$
1320 PPCODE: 1407 PPCODE:
1321{ 1408{
1322 dREQ; 1409 dREQ;
1323 1410
1411 req->type = EIO_WD_OPEN;
1412 req_set_path1 (req, pathname);
1413
1414 REQ_SEND;
1415}
1416
1417void
1418aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1419 PPCODE:
1420{
1421 dREQ;
1422
1324 req->type = REQ_OPEN; 1423 req->type = EIO_OPEN;
1325 req->sv1 = newSVsv (pathname); 1424 req_set_path1 (req, pathname);
1326 req->ptr1 = SvPVbyte_nolen (req->sv1);
1327 req->int1 = flags; 1425 req->int1 = flags;
1328 req->mode = mode; 1426 req->int2 = mode;
1329 1427
1330 REQ_SEND; 1428 REQ_SEND;
1331} 1429}
1332 1430
1333void 1431void
1334aio_close (fh,callback=&PL_sv_undef) 1432aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1335 SV * fh
1336 SV * callback
1337 PROTOTYPE: $;$
1338 ALIAS: 1433 ALIAS:
1339 aio_close = REQ_CLOSE
1340 aio_fsync = REQ_FSYNC 1434 aio_fsync = EIO_FSYNC
1341 aio_fdatasync = REQ_FDATASYNC 1435 aio_fdatasync = EIO_FDATASYNC
1436 aio_syncfs = EIO_SYNCFS
1342 PPCODE: 1437 PPCODE:
1343{ 1438{
1439 int fd = s_fileno_croak (fh, 0);
1344 dREQ; 1440 dREQ;
1345 1441
1346 req->type = ix; 1442 req->type = ix;
1347 req->fh = newSVsv (fh); 1443 req->sv1 = newSVsv (fh);
1348 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1444 req->int1 = fd;
1349 1445
1350 REQ_SEND (req); 1446 REQ_SEND;
1351} 1447}
1352 1448
1353void 1449void
1450aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1451 PPCODE:
1452{
1453 int fd = s_fileno_croak (fh, 0);
1454 dREQ;
1455
1456 req->type = EIO_SYNC_FILE_RANGE;
1457 req->sv1 = newSVsv (fh);
1458 req->int1 = fd;
1459 req->offs = offset;
1460 req->size = nbytes;
1461 req->int2 = flags;
1462
1463 REQ_SEND;
1464}
1465
1466void
1467aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1468 PPCODE:
1469{
1470 int fd = s_fileno_croak (fh, 0);
1471 dREQ;
1472
1473 req->type = EIO_FALLOCATE;
1474 req->sv1 = newSVsv (fh);
1475 req->int1 = fd;
1476 req->int2 = mode;
1477 req->offs = offset;
1478 req->size = len;
1479
1480 REQ_SEND;
1481}
1482
1483void
1484aio_close (SV *fh, SV *callback = &PL_sv_undef)
1485 PPCODE:
1486{
1487 int fd = s_fileno_croak (fh, 0);
1488 dREQ;
1489#if 0
1490 /* partially duplicate logic in s_fileno */
1491 SvGETMAGIC (fh);
1492
1493 if (SvROK (fh))
1494 {
1495 fh = SvRV (fh);
1496 SvGETMAGIC (fh);
1497 }
1498
1499 if (SvTYPE (fh) == SVt_PVGV)
1500 {
1501 /* perl filehandle */
1502 PerlIOUnix_refcnt_inc (fd);
1503 do_close ((GV *)fh, 1);
1504
1505 req->type = EIO_CLOSE;
1506 req->int1 = fd;
1507 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1508 }
1509 else
1510#endif
1511 {
1512 /* fd number */
1513 req->type = EIO_DUP2;
1514 req->int1 = close_fd;
1515 req->sv2 = newSVsv (fh);
1516 req->int2 = fd;
1517 }
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1524 PPCODE:
1525{
1526 int fd = s_fileno_croak (fh, 0);
1527 dREQ;
1528
1529 req->type = EIO_SEEK;
1530 req->sv1 = newSVsv (fh);
1531 req->int1 = fd;
1532 req->offs = SvVAL64 (offset);
1533 req->int2 = whence;
1534
1535 REQ_SEND;
1536}
1537
1538void
1354aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1539aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1355 SV * fh
1356 UV offset
1357 UV length
1358 SV8 * data
1359 UV dataoffset
1360 SV * callback
1361 ALIAS: 1540 ALIAS:
1362 aio_read = REQ_READ 1541 aio_read = EIO_READ
1363 aio_write = REQ_WRITE 1542 aio_write = EIO_WRITE
1364 PROTOTYPE: $$$$$;$
1365 PPCODE: 1543 PPCODE:
1366{ 1544{
1367 STRLEN svlen; 1545 STRLEN svlen;
1546 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1368 char *svptr = SvPVbyte (data, svlen); 1547 char *svptr = SvPVbyte (data, svlen);
1369 1548 UV len = SvUV (length);
1370 SvUPGRADE (data, SVt_PV);
1371 SvPOK_on (data);
1372 1549
1373 if (dataoffset < 0) 1550 if (dataoffset < 0)
1374 dataoffset += svlen; 1551 dataoffset += svlen;
1375 1552
1376 if (dataoffset < 0 || dataoffset > svlen) 1553 if (dataoffset < 0 || dataoffset > svlen)
1377 croak ("data offset outside of string"); 1554 croak ("dataoffset outside of data scalar");
1378 1555
1379 if (ix == REQ_WRITE) 1556 if (ix == EIO_WRITE)
1380 { 1557 {
1381 /* write: check length and adjust. */ 1558 /* write: check length and adjust. */
1382 if (length < 0 || length + dataoffset > svlen) 1559 if (!SvOK (length) || len + dataoffset > svlen)
1383 length = svlen - dataoffset; 1560 len = svlen - dataoffset;
1384 } 1561 }
1385 else 1562 else
1386 { 1563 {
1387 /* read: grow scalar as necessary */ 1564 /* read: check type and grow scalar as necessary */
1565 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1388 svptr = SvGROW (data, length + dataoffset); 1566 svptr = sv_grow (data, len + dataoffset + 1);
1567 else if (SvCUR (data) < len + dataoffset)
1568 croak ("length + dataoffset outside of scalar, and cannot grow");
1389 } 1569 }
1390
1391 if (length < 0)
1392 croak ("length must not be negative");
1393 1570
1394 { 1571 {
1395 dREQ; 1572 dREQ;
1396 1573
1397 req->type = ix; 1574 req->type = ix;
1398 req->fh = newSVsv (fh); 1575 req->sv1 = newSVsv (fh);
1399 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1576 req->int1 = fd;
1400 : IoOFP (sv_2io (fh))); 1577 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1401 req->offs = offset;
1402 req->size = length; 1578 req->size = len;
1403 req->sv1 = SvREFCNT_inc (data); 1579 req->sv2 = SvREFCNT_inc (data);
1404 req->ptr1 = (char *)svptr + dataoffset; 1580 req->ptr2 = (char *)svptr + dataoffset;
1405 req->stroffset = dataoffset; 1581 req->stroffset = dataoffset;
1406 1582
1407 if (!SvREADONLY (data)) 1583 if (!SvREADONLY (data))
1408 { 1584 {
1409 SvREADONLY_on (data); 1585 SvREADONLY_on (data);
1410 req->flags |= FLAG_SV1_RO_OFF; 1586 req->flags |= FLAG_SV2_RO_OFF;
1411 } 1587 }
1412 1588
1413 REQ_SEND; 1589 REQ_SEND;
1414 } 1590 }
1415} 1591}
1416 1592
1417void 1593void
1418aio_readlink (path,callback=&PL_sv_undef) 1594aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1419 SV8 * path 1595 ALIAS:
1420 SV * callback 1596 aio_ioctl = EIO_IOCTL
1421 PROTOTYPE: $$;$ 1597 aio_fcntl = EIO_FCNTL
1422 PPCODE: 1598 PPCODE:
1423{ 1599{
1424 SV *data; 1600 int fd = s_fileno_croak (fh, 0);
1601 char *svptr;
1602
1603 if (SvPOK (arg) || !SvNIOK (arg))
1604 {
1605 STRLEN svlen;
1606 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1607#ifdef IOCPARM_LEN
1608 STRLEN need = IOCPARM_LEN (request);
1609#else
1610 STRLEN need = 256;
1611#endif
1612
1613 if (svlen < need)
1614 svptr = SvGROW (arg, need);
1615 }
1616 else
1617 svptr = (char *)SvIV (arg);
1618
1619 {
1620 dREQ;
1621
1622 req->type = ix;
1623 req->sv1 = newSVsv (fh);
1624 req->int1 = fd;
1625 req->int2 = (long)request;
1626 req->sv2 = SvREFCNT_inc (arg);
1627 req->ptr2 = svptr;
1628
1629 REQ_SEND;
1630 }
1631}
1632
1633void
1634aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1635 ALIAS:
1636 aio_readlink = EIO_READLINK
1637 aio_realpath = EIO_REALPATH
1638 PPCODE:
1639{
1425 dREQ; 1640 dREQ;
1426 1641
1427 data = newSV (NAME_MAX);
1428 SvPOK_on (data);
1429
1430 req->type = REQ_READLINK; 1642 req->type = ix;
1431 req->fh = newSVsv (path); 1643 req_set_path1 (req, pathname);
1432 req->ptr2 = SvPVbyte_nolen (req->fh);
1433 req->sv1 = data;
1434 req->ptr1 = SvPVbyte_nolen (data);
1435 1644
1436 REQ_SEND; 1645 REQ_SEND;
1437} 1646}
1438 1647
1439void 1648void
1440aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1649aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1441 SV * out_fh
1442 SV * in_fh
1443 UV in_offset
1444 UV length
1445 SV * callback
1446 PROTOTYPE: $$$$;$
1447 PPCODE: 1650 PPCODE:
1448{ 1651{
1652 int ifd = s_fileno_croak (in_fh , 0);
1653 int ofd = s_fileno_croak (out_fh, 1);
1449 dREQ; 1654 dREQ;
1450 1655
1451 req->type = REQ_SENDFILE; 1656 req->type = EIO_SENDFILE;
1452 req->fh = newSVsv (out_fh); 1657 req->sv1 = newSVsv (out_fh);
1453 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1658 req->int1 = ofd;
1454 req->sv2 = newSVsv (in_fh); 1659 req->sv2 = newSVsv (in_fh);
1455 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1660 req->int2 = ifd;
1456 req->offs = in_offset; 1661 req->offs = in_offset;
1457 req->size = length; 1662 req->size = length;
1458 1663
1459 REQ_SEND; 1664 REQ_SEND;
1460} 1665}
1461 1666
1462void 1667void
1463aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1668aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1464 SV * fh
1465 UV offset
1466 IV length
1467 SV * callback
1468 PROTOTYPE: $$$;$
1469 PPCODE: 1669 PPCODE:
1470{ 1670{
1671 int fd = s_fileno_croak (fh, 0);
1471 dREQ; 1672 dREQ;
1472 1673
1473 req->type = REQ_READAHEAD; 1674 req->type = EIO_READAHEAD;
1474 req->fh = newSVsv (fh); 1675 req->sv1 = newSVsv (fh);
1475 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1676 req->int1 = fd;
1476 req->offs = offset; 1677 req->offs = offset;
1477 req->size = length; 1678 req->size = length;
1478 1679
1479 REQ_SEND; 1680 REQ_SEND;
1480} 1681}
1481 1682
1482void 1683void
1483aio_stat (fh_or_path,callback=&PL_sv_undef) 1684aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1484 SV8 * fh_or_path
1485 SV * callback
1486 ALIAS: 1685 ALIAS:
1487 aio_stat = REQ_STAT 1686 aio_stat = EIO_STAT
1488 aio_lstat = REQ_LSTAT 1687 aio_lstat = EIO_LSTAT
1688 aio_statvfs = EIO_STATVFS
1489 PPCODE: 1689 PPCODE:
1490{ 1690{
1491 dREQ; 1691 dREQ;
1492 1692
1493 req->ptr2 = malloc (sizeof (Stat_t)); 1693 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1494 if (!req->ptr2)
1495 {
1496 req_free (req);
1497 croak ("out of memory during aio_stat statdata allocation");
1498 }
1499
1500 req->flags |= FLAG_PTR2_FREE;
1501
1502 if (SvPOK (fh_or_path))
1503 {
1504 req->type = ix;
1505 req->sv1 = newSVsv (fh_or_path);
1506 req->ptr1 = SvPVbyte_nolen (req->sv1);
1507 }
1508 else
1509 {
1510 req->type = REQ_FSTAT;
1511 req->fh = newSVsv (fh_or_path);
1512 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1513 }
1514 1694
1515 REQ_SEND; 1695 REQ_SEND;
1516} 1696}
1517 1697
1518void 1698void
1699st_xtime ()
1700 ALIAS:
1701 st_atime = 0x01
1702 st_mtime = 0x02
1703 st_ctime = 0x04
1704 st_btime = 0x08
1705 st_xtime = 0x0f
1706 PPCODE:
1707 EXTEND (SP, 4);
1708 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1709 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1710 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1711 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1712
1713void
1714st_xtimensec ()
1715 ALIAS:
1716 st_atimensec = 0x01
1717 st_mtimensec = 0x02
1718 st_ctimensec = 0x04
1719 st_btimensec = 0x08
1720 st_xtimensec = 0x0f
1721 st_btimesec = 0x10
1722 st_gen = 0x20
1723 PPCODE:
1724 EXTEND (SP, 4);
1725 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1726 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1727 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1728 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1729 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1730 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1731
1732UV
1733major (UV dev)
1734 ALIAS:
1735 minor = 1
1736 CODE:
1737 RETVAL = ix ? minor (dev) : major (dev);
1738 OUTPUT:
1739 RETVAL
1740
1741UV
1742makedev (UV maj, UV min)
1743 CODE:
1744 RETVAL = makedev (maj, min);
1745 OUTPUT:
1746 RETVAL
1747
1748void
1749aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1750 PPCODE:
1751{
1752 dREQ;
1753
1754 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1755 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1756 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1757
1758 REQ_SEND;
1759}
1760
1761void
1762aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1763 PPCODE:
1764{
1765 dREQ;
1766
1767 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1768 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1769
1770 REQ_SEND;
1771}
1772
1773void
1774aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1775 PPCODE:
1776{
1777 dREQ;
1778
1779 req->int2 = mode;
1780 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1781
1782 REQ_SEND;
1783}
1784
1785void
1786aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1787 PPCODE:
1788{
1789 dREQ;
1790
1791 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1792 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1793 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1794
1795 REQ_SEND;
1796}
1797
1798void
1799aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1800 PPCODE:
1801{
1802 dREQ;
1803
1804 req->type = EIO_READDIR;
1805 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1806
1807 if (flags & EIO_READDIR_DENTS)
1808 req->int1 |= EIO_READDIR_CUSTOM2;
1809
1810 req_set_path1 (req, pathname);
1811
1812 REQ_SEND;
1813}
1814
1815void
1816aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1817 PPCODE:
1818{
1819 dREQ;
1820
1821 req->type = EIO_MKDIR;
1822 req->int2 = mode;
1823 req_set_path1 (req, pathname);
1824
1825 REQ_SEND;
1826}
1827
1828void
1519aio_unlink (pathname,callback=&PL_sv_undef) 1829aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1520 SV8 * pathname
1521 SV * callback
1522 ALIAS: 1830 ALIAS:
1523 aio_unlink = REQ_UNLINK 1831 aio_unlink = EIO_UNLINK
1524 aio_rmdir = REQ_RMDIR 1832 aio_rmdir = EIO_RMDIR
1525 aio_readdir = REQ_READDIR 1833 aio_readdir = EIO_READDIR
1526 PPCODE: 1834 PPCODE:
1527{ 1835{
1528 dREQ; 1836 dREQ;
1529 1837
1530 req->type = ix; 1838 req->type = ix;
1531 req->sv1 = newSVsv (pathname); 1839 req_set_path1 (req, pathname);
1532 req->ptr1 = SvPVbyte_nolen (req->sv1);
1533 1840
1534 REQ_SEND; 1841 REQ_SEND;
1535} 1842}
1536 1843
1537void 1844void
1538aio_link (oldpath,newpath,callback=&PL_sv_undef) 1845aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1539 SV8 * oldpath
1540 SV8 * newpath
1541 SV * callback
1542 ALIAS: 1846 ALIAS:
1543 aio_link = REQ_LINK 1847 aio_link = EIO_LINK
1544 aio_symlink = REQ_SYMLINK 1848 aio_symlink = EIO_SYMLINK
1545 aio_rename = REQ_RENAME 1849 aio_rename = EIO_RENAME
1546 PPCODE: 1850 PPCODE:
1547{ 1851{
1852 eio_wd wd2 = 0;
1548 dREQ; 1853 dREQ;
1549 1854
1550 req->type = ix; 1855 req->type = ix;
1551 req->fh = newSVsv (oldpath); 1856 req_set_path1 (req, oldpath);
1552 req->ptr2 = SvPVbyte_nolen (req->fh); 1857 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1553 req->sv1 = newSVsv (newpath); 1858 req->int3 = (long)wd2;
1554 req->ptr1 = SvPVbyte_nolen (req->sv1);
1555 1859
1556 REQ_SEND; 1860 REQ_SEND;
1557} 1861}
1558 1862
1559void 1863void
1560aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1864aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1561 SV8 * pathname
1562 SV * callback
1563 UV mode
1564 UV dev
1565 PPCODE: 1865 PPCODE:
1566{ 1866{
1867 eio_wd wd2 = 0;
1567 dREQ; 1868 dREQ;
1568 1869
1569 req->type = REQ_MKNOD; 1870 req->type = EIO_RENAME;
1570 req->sv1 = newSVsv (pathname); 1871 req_set_path1 (req, oldpath);
1571 req->ptr1 = SvPVbyte_nolen (req->sv1); 1872 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1572 req->mode = (mode_t)mode; 1873 req->int2 = flags;
1573 req->offs = dev; 1874 req->int3 = (long)wd2;
1574 1875
1575 REQ_SEND; 1876 REQ_SEND;
1576} 1877}
1577 1878
1578void 1879void
1579aio_busy (delay,callback=&PL_sv_undef) 1880aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1580 double delay
1581 SV * callback
1582 PPCODE: 1881 PPCODE:
1583{ 1882{
1584 dREQ; 1883 dREQ;
1585 1884
1586 req->type = REQ_BUSY; 1885 req->type = EIO_MKNOD;
1587 req->int1 = delay < 0. ? 0 : delay; 1886 req->int2 = (mode_t)mode;
1588 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1887 req->offs = dev;
1589 1888 req_set_path1 (req, pathname);
1889
1590 REQ_SEND; 1890 REQ_SEND;
1591} 1891}
1592 1892
1593void 1893void
1594aio_group (callback=&PL_sv_undef) 1894aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1595 SV * callback 1895 ALIAS:
1596 PROTOTYPE: ;$ 1896 aio_mtouch = EIO_MTOUCH
1897 aio_msync = EIO_MSYNC
1597 PPCODE: 1898 PPCODE:
1598{ 1899{
1900 STRLEN svlen;
1901 char *svptr = SvPVbyte (data, svlen);
1902 UV len = SvUV (length);
1903
1904 if (flags < 0)
1905 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1906
1907 if (offset < 0)
1908 offset += svlen;
1909
1910 if (offset < 0 || offset > svlen)
1911 croak ("offset outside of scalar");
1912
1913 if (!SvOK (length) || len + offset > svlen)
1914 len = svlen - offset;
1915
1916 {
1917 dREQ;
1918
1919 req->type = ix;
1920 req->sv2 = SvREFCNT_inc (data);
1921 req->ptr2 = (char *)svptr + offset;
1922 req->size = len;
1923 req->int1 = flags;
1924
1925 REQ_SEND;
1926 }
1927}
1928
1929void
1930aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1931 PPCODE:
1932{
1933 STRLEN svlen;
1934 char *svptr = SvPVbyte (data, svlen);
1935 UV len = SvUV (length);
1936
1937 if (offset < 0)
1938 offset += svlen;
1939
1940 if (offset < 0 || offset > svlen)
1941 croak ("offset outside of scalar");
1942
1943 if (!SvOK (length) || len + offset > svlen)
1944 len = svlen - offset;
1945
1946 {
1947 dREQ;
1948
1949 req->type = EIO_MLOCK;
1950 req->sv2 = SvREFCNT_inc (data);
1951 req->ptr2 = (char *)svptr + offset;
1952 req->size = len;
1953
1954 REQ_SEND;
1955 }
1956}
1957
1958void
1959aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1960 PPCODE:
1961{
1962 dREQ;
1963
1964 req->type = EIO_MLOCKALL;
1965 req->int1 = flags;
1966
1967 REQ_SEND;
1968}
1969
1970void
1971aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1972 PPCODE:
1973{
1974 int fd = s_fileno_croak (fh, 0);
1599 dREQ; 1975 dREQ;
1600 1976
1601 req->type = REQ_GROUP; 1977 req->type = EIO_CUSTOM;
1978 req->sv1 = newSVsv (fh);
1979 req->int1 = fd;
1602 1980
1603 req_send (req); 1981 req->feed = fiemap;
1604 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1982#if HAVE_FIEMAP
1605} 1983 /* keep our fingers crossed that the next two types are 64 bit */
1984 req->offs = start;
1985 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1986 req->int2 = flags;
1987 req->int3 = SvOK (count) ? SvIV (count) : -1;
1988#endif
1606 1989
1990 REQ_SEND;
1991}
1992
1607void 1993void
1608aio_nop (callback=&PL_sv_undef) 1994aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1609 SV * callback 1995 PPCODE:
1996{
1997 char *svptr = 0;
1998
1999 sv_clear_foreign (data);
2000
2001 if (length) /* known length, directly read into scalar */
2002 {
2003 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2004 svptr = sv_grow (data, length + 1);
2005 else if (SvCUR (data) < length)
2006 croak ("length outside of scalar, and cannot grow");
2007 else
2008 svptr = SvPVbyte_nolen (data);
2009 }
2010
2011 {
2012 dREQ;
2013
2014 req->type = EIO_SLURP;
2015 req_set_path1 (req, pathname);
2016 req->offs = offset;
2017 req->size = length;
2018 req->sv2 = SvREFCNT_inc (data);
2019 req->ptr2 = svptr;
2020
2021 if (!SvREADONLY (data))
2022 {
2023 SvREADONLY_on (data);
2024 req->flags |= FLAG_SV2_RO_OFF;
2025 }
2026
2027 REQ_SEND;
2028 }
2029}
2030
2031void
2032aio_busy (double delay, SV *callback = &PL_sv_undef)
1610 PPCODE: 2033 PPCODE:
1611{ 2034{
1612 dREQ; 2035 dREQ;
1613 2036
1614 req->type = REQ_NOP; 2037 req->type = EIO_BUSY;
2038 req->nv1 = delay < 0. ? 0. : delay;
1615 2039
1616 REQ_SEND; 2040 REQ_SEND;
1617} 2041}
1618 2042
2043void
2044aio_group (SV *callback = &PL_sv_undef)
2045 PPCODE:
2046{
2047 dREQ;
2048
2049 req->type = EIO_GROUP;
2050
2051 PUTBACK;
2052 req_submit (req);
2053 SPAGAIN;
2054
2055 XPUSHs (req_sv (req, aio_grp_stash));
2056}
2057
2058void
2059aio_nop (SV *callback = &PL_sv_undef)
2060 ALIAS:
2061 aio_nop = EIO_NOP
2062 aio_sync = EIO_SYNC
2063 PPCODE:
2064{
2065 dREQ;
2066
2067 req->type = ix;
2068
2069 REQ_SEND;
2070}
2071
1619int 2072int
1620aioreq_pri (int pri = 0) 2073aioreq_pri (int pri = NO_INIT)
1621 PROTOTYPE: ;$
1622 CODE: 2074 CODE:
1623 RETVAL = next_pri - PRI_BIAS; 2075 RETVAL = next_pri;
1624 if (items > 0) 2076 if (items > 0)
1625 { 2077 {
1626 if (pri < PRI_MIN) pri = PRI_MIN; 2078 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1627 if (pri > PRI_MAX) pri = PRI_MAX; 2079 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1628 next_pri = pri + PRI_BIAS; 2080 next_pri = pri;
1629 } 2081 }
1630 OUTPUT: 2082 OUTPUT:
1631 RETVAL 2083 RETVAL
1632 2084
1633void 2085void
1634aioreq_nice (int nice = 0) 2086aioreq_nice (int nice = 0)
1635 CODE: 2087 CODE:
1636 nice = next_pri - nice; 2088 nice = next_pri - nice;
1637 if (nice < PRI_MIN) nice = PRI_MIN; 2089 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1638 if (nice > PRI_MAX) nice = PRI_MAX; 2090 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1639 next_pri = nice + PRI_BIAS; 2091 next_pri = nice;
1640 2092
1641void 2093void
1642flush () 2094flush ()
1643 PROTOTYPE:
1644 CODE: 2095 CODE:
1645 while (nreqs) 2096 while (eio_nreqs ())
1646 { 2097 {
1647 poll_wait (); 2098 poll_wait ();
1648 poll_cb (); 2099 poll_cb ();
1649 } 2100 }
1650 2101
1651int 2102int
1652poll() 2103poll ()
1653 PROTOTYPE:
1654 CODE: 2104 CODE:
1655 poll_wait (); 2105 poll_wait ();
1656 RETVAL = poll_cb (); 2106 RETVAL = poll_cb ();
1657 OUTPUT: 2107 OUTPUT:
1658 RETVAL 2108 RETVAL
1659 2109
1660int 2110int
1661poll_fileno() 2111poll_fileno ()
1662 PROTOTYPE:
1663 CODE: 2112 CODE:
1664 RETVAL = respipe [0]; 2113 RETVAL = s_epipe_fd (&respipe);
1665 OUTPUT: 2114 OUTPUT:
1666 RETVAL 2115 RETVAL
1667 2116
1668int 2117int
1669poll_cb(...) 2118poll_cb (...)
1670 PROTOTYPE: 2119 PROTOTYPE:
1671 CODE: 2120 CODE:
1672 RETVAL = poll_cb (); 2121 RETVAL = poll_cb ();
1673 OUTPUT: 2122 OUTPUT:
1674 RETVAL 2123 RETVAL
1675 2124
1676void 2125void
1677poll_wait() 2126poll_wait ()
1678 PROTOTYPE:
1679 CODE: 2127 CODE:
1680 poll_wait (); 2128 poll_wait ();
1681 2129
1682int 2130int
1683nreqs() 2131nreqs ()
1684 PROTOTYPE:
1685 CODE: 2132 CODE:
1686 RETVAL = nreqs; 2133 RETVAL = eio_nreqs ();
1687 OUTPUT: 2134 OUTPUT:
1688 RETVAL 2135 RETVAL
1689 2136
1690int 2137int
1691nready() 2138nready ()
1692 PROTOTYPE:
1693 CODE: 2139 CODE:
1694 RETVAL = get_nready (); 2140 RETVAL = eio_nready ();
1695 OUTPUT: 2141 OUTPUT:
1696 RETVAL 2142 RETVAL
1697 2143
1698int 2144int
1699npending() 2145npending ()
1700 PROTOTYPE:
1701 CODE: 2146 CODE:
1702 RETVAL = get_npending (); 2147 RETVAL = eio_npending ();
1703 OUTPUT: 2148 OUTPUT:
1704 RETVAL 2149 RETVAL
1705 2150
1706int 2151int
1707nthreads() 2152nthreads ()
1708 PROTOTYPE:
1709 CODE: 2153 CODE:
1710 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2154 RETVAL = eio_nthreads ();
1711 RETVAL = started;
1712 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1713 OUTPUT: 2155 OUTPUT:
1714 RETVAL 2156 RETVAL
1715 2157
2158int
2159fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2160 CODE:
2161 RETVAL = posix_fadvise (fh, offset, length, advice);
2162 OUTPUT:
2163 RETVAL
2164
2165IV
2166sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2167 CODE:
2168 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2169 OUTPUT:
2170 RETVAL
2171
2172void
2173mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2174 PPCODE:
2175 sv_clear_foreign (scalar);
2176{
2177 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2178 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2179 if (addr == (void *)-1)
2180 XSRETURN_NO;
2181
2182 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2183
2184 if (!(prot & PROT_WRITE))
2185 SvREADONLY_on (scalar);
2186
2187 XSRETURN_YES;
2188}
2189
2190void
2191munmap (SV *scalar)
2192 CODE:
2193 sv_clear_foreign (scalar);
2194
2195SV *
2196mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2197 CODE:
2198{
2199 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2200 void *new;
2201
2202 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2203 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2204
2205 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2206
2207 RETVAL = &PL_sv_no;
2208
2209 if (new != (void *)-1)
2210 {
2211 RETVAL = new == (void *)mg->mg_ptr
2212 ? newSVpvn ("0 but true", 10)
2213 : &PL_sv_yes;
2214
2215 mg->mg_ptr = (char *)new;
2216 mg->mg_obj = (SV *)new_length;
2217
2218 SvPVX (scalar) = mg->mg_ptr;
2219 SvCUR_set (scalar, new_length);
2220 }
2221}
2222 OUTPUT:
2223 RETVAL
2224
2225int
2226madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2227 ALIAS:
2228 mprotect = 1
2229 CODE:
2230{
2231 STRLEN svlen;
2232 void *addr = SvPVbyte (scalar, svlen);
2233 STRLEN len = SvUV (length);
2234
2235 if (offset < 0)
2236 offset += svlen;
2237
2238 if (offset < 0 || offset > svlen)
2239 croak ("offset outside of scalar");
2240
2241 if (!SvOK (length) || len + offset > svlen)
2242 len = svlen - offset;
2243
2244 addr = (void *)(((intptr_t)addr) + offset);
2245 eio_page_align (&addr, &len);
2246
2247 switch (ix)
2248 {
2249 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2250 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2251 }
2252}
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2258 CODE:
2259{
2260 STRLEN svlen;
2261 void *addr = SvPVbyte (scalar, svlen);
2262 size_t len = SvUV (length);
2263
2264 if (offset < 0)
2265 offset += svlen;
2266
2267 if (offset < 0 || offset > svlen)
2268 croak ("offset outside of scalar");
2269
2270 if (!SvOK (length) || len + offset > svlen)
2271 len = svlen - offset;
2272
2273 addr = (void *)(((intptr_t)addr) + offset);
2274 eio_page_align (&addr, &len);
2275#if _POSIX_MEMLOCK_RANGE
2276 RETVAL = munlock (addr, len);
2277#else
2278 RETVAL = EIO_ENOSYS ();
2279#endif
2280}
2281 OUTPUT:
2282 RETVAL
2283
2284int
2285mlockall (int flags)
2286 PROTOTYPE: $;
2287 CODE:
2288 RETVAL = eio_mlockall_sync (flags);
2289 OUTPUT:
2290 RETVAL
2291
2292int
2293munlockall ()
2294 CODE:
2295#if _POSIX_MEMLOCK
2296 munlockall ();
2297#else
2298 RETVAL = EIO_ENOSYS ();
2299#endif
2300 OUTPUT:
2301 RETVAL
2302
2303int
2304splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2305 CODE:
2306{
2307#if HAVE_LINUX_SPLICE
2308 loff_t off_in_, off_out_;
2309 RETVAL = splice (
2310 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2311 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2312 length, flags
2313 );
2314#else
2315 RETVAL = EIO_ENOSYS ();
2316#endif
2317}
2318 OUTPUT:
2319 RETVAL
2320
2321int
2322tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2323 CODE:
2324#if HAVE_LINUX_SPLICE
2325 RETVAL = tee (rfh, wfh, length, flags);
2326#else
2327 RETVAL = EIO_ENOSYS ();
2328#endif
2329 OUTPUT:
2330 RETVAL
2331
2332int
2333pipesize (aio_rfd rfh, int new_size = -1)
2334 PROTOTYPE: $;$
2335 CODE:
2336#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2337 if (new_size >= 0)
2338 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2339 else
2340 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2341#else
2342 errno = ENOSYS;
2343 RETVAL = -1;
2344#endif
2345 OUTPUT:
2346 RETVAL
2347
2348void
2349pipe2 (int flags = 0)
2350 PROTOTYPE: ;$
2351 PPCODE:
2352{
2353 int fd[2];
2354 int res;
2355
2356 if (flags)
2357#if HAVE_PIPE2
2358 res = pipe2 (fd, flags);
2359#else
2360 res = (errno = ENOSYS, -1);
2361#endif
2362 else
2363 res = pipe (fd);
2364
2365 if (!res)
2366 {
2367 EXTEND (SP, 2);
2368 PUSHs (newmortalFH (fd[0], O_RDONLY));
2369 PUSHs (newmortalFH (fd[1], O_WRONLY));
2370 }
2371}
2372
2373void
2374eventfd (unsigned int initval = 0, int flags = 0)
2375 PPCODE:
2376{
2377 int fd;
2378#if HAVE_EVENTFD
2379 fd = eventfd (initval, flags);
2380#else
2381 fd = (errno = ENOSYS, -1);
2382#endif
2383
2384 XPUSHs (newmortalFH (fd, O_RDWR));
2385}
2386
2387void
2388timerfd_create (int clockid, int flags = 0)
2389 PPCODE:
2390{
2391 int fd;
2392#if HAVE_TIMERFD
2393 fd = timerfd_create (clockid, flags);
2394#else
2395 fd = (errno = ENOSYS, -1);
2396#endif
2397
2398 XPUSHs (newmortalFH (fd, O_RDWR));
2399}
2400
2401void
2402timerfd_settime (SV *fh, int flags, NV interval, NV value)
2403 PPCODE:
2404{
2405 int fd = s_fileno_croak (fh, 0);
2406#if HAVE_TIMERFD
2407 int res;
2408 struct itimerspec its, ots;
2409
2410 ts_set (&its.it_interval, interval);
2411 ts_set (&its.it_value , value);
2412 res = timerfd_settime (fd, flags, &its, &ots);
2413
2414 if (!res)
2415 {
2416 EXTEND (SP, 2);
2417 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2418 PUSHs (newSVnv (ts_get (&ots.it_value)));
2419 }
2420#else
2421 errno = ENOSYS;
2422#endif
2423}
2424
2425void
2426timerfd_gettime (SV *fh)
2427 PPCODE:
2428{
2429 int fd = s_fileno_croak (fh, 0);
2430#if HAVE_TIMERFD
2431 int res;
2432 struct itimerspec ots;
2433 res = timerfd_gettime (fd, &ots);
2434
2435 if (!res)
2436 {
2437 EXTEND (SP, 2);
2438 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2439 PUSHs (newSVnv (ts_get (&ots.it_value)));
2440 }
2441#else
2442 errno = ENOSYS;
2443#endif
2444}
2445
2446UV
2447get_fdlimit ()
2448 CODE:
2449#if HAVE_RLIMITS
2450 struct rlimit rl;
2451 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2452 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2453#endif
2454 XSRETURN_UNDEF;
2455 OUTPUT:
2456 RETVAL
2457
2458void
2459min_fdlimit (UV limit = 0x7fffffffU)
2460 CODE:
2461{
2462#if HAVE_RLIMITS
2463 struct rlimit rl;
2464 rlim_t orig_rlim_max;
2465 UV bit;
2466
2467 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2468 goto fail;
2469
2470 if (rl.rlim_cur == RLIM_INFINITY)
2471 XSRETURN_YES;
2472
2473 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2474
2475 if (rl.rlim_cur < limit)
2476 {
2477 rl.rlim_cur = limit;
2478
2479 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2480 rl.rlim_max = rl.rlim_cur;
2481 }
2482
2483 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2484 XSRETURN_YES;
2485
2486 if (errno == EPERM)
2487 {
2488 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2489 /* our limit overflows a system-wide limit */
2490 /* try an adaptive algorithm, but do not lower the hardlimit */
2491 rl.rlim_max = 0;
2492 for (bit = 0x40000000U; bit; bit >>= 1)
2493 {
2494 rl.rlim_max |= bit;
2495 rl.rlim_cur = rl.rlim_max;
2496
2497 /* nevr decrease the hard limit */
2498 if (rl.rlim_max < orig_rlim_max)
2499 break;
2500
2501 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2502 rl.rlim_max &= ~bit; /* too high, remove bit again */
2503 }
2504
2505 /* now, raise the soft limit to the max permitted */
2506 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2507 {
2508 rl.rlim_cur = rl.rlim_max;
2509 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2510 errno = EPERM;
2511 }
2512 }
2513#endif
2514 fail:
2515 XSRETURN_UNDEF;
2516}
2517
2518void _on_next_submit (SV *cb)
2519 CODE:
2520 SvREFCNT_dec (on_next_submit);
2521 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2522
1716PROTOTYPES: DISABLE 2523PROTOTYPES: DISABLE
2524
2525MODULE = IO::AIO PACKAGE = IO::AIO::WD
2526
2527BOOT:
2528{
2529 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2530 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2531}
2532
2533void
2534DESTROY (SV *self)
2535 CODE:
2536{
2537 aio_wd wd = SvAIO_WD (self);
2538#if HAVE_AT
2539 {
2540 SV *callback = &PL_sv_undef;
2541 dREQ; /* clobbers next_pri :/ */
2542 next_pri = req->pri; /* restore next_pri */
2543 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2544 req->type = EIO_WD_CLOSE;
2545 req->wd = wd;
2546 REQ_SEND;
2547 }
2548#else
2549 eio_wd_close_sync (wd);
2550#endif
2551}
1717 2552
1718MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2553MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1719 2554
1720void 2555void
1721cancel (aio_req_ornot req) 2556cancel (aio_req_ornot req)
1722 CODE: 2557 CODE:
1723 req_cancel (req); 2558 eio_cancel (req);
1724 2559
1725void 2560void
1726cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2561cb (aio_req_ornot req, SV *callback = NO_INIT)
1727 CODE: 2562 PPCODE:
2563{
2564 if (GIMME_V != G_VOID)
2565 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2566
2567 if (items > 1)
2568 {
2569 SV *cb_cv = get_cb (callback);
2570
1728 SvREFCNT_dec (req->callback); 2571 SvREFCNT_dec (req->callback);
1729 req->callback = newSVsv (callback); 2572 req->callback = SvREFCNT_inc (cb_cv);
2573 }
2574}
1730 2575
1731MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2576MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1732 2577
1733void 2578void
1734add (aio_req grp, ...) 2579add (aio_req grp, ...)
1735 PPCODE: 2580 PPCODE:
1736{ 2581{
1737 int i; 2582 int i;
1738 aio_req req;
1739 2583
1740 if (grp->int1 == 2) 2584 if (grp->int1 == 2)
1741 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2585 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742 2586
1743 for (i = 1; i < items; ++i ) 2587 for (i = 1; i < items; ++i )
1744 { 2588 {
2589 aio_req req;
2590
1745 if (GIMME_V != G_VOID) 2591 if (GIMME_V != G_VOID)
1746 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2592 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1747 2593
1748 req = SvAIO_REQ (ST (i)); 2594 req = SvAIO_REQ (ST (i));
1749 2595
1750 if (req) 2596 if (req)
1751 { 2597 eio_grp_add (grp, req);
1752 ++grp->size;
1753 req->grp = grp;
1754
1755 req->grp_prev = 0;
1756 req->grp_next = grp->grp_first;
1757
1758 if (grp->grp_first)
1759 grp->grp_first->grp_prev = req;
1760
1761 grp->grp_first = req;
1762 }
1763 } 2598 }
1764} 2599}
1765 2600
1766void 2601void
1767cancel_subs (aio_req_ornot req) 2602cancel_subs (aio_req_ornot req)
… …
1776 AV *av; 2611 AV *av;
1777 2612
1778 grp->errorno = errno; 2613 grp->errorno = errno;
1779 2614
1780 av = newAV (); 2615 av = newAV ();
2616 av_extend (av, items - 1);
1781 2617
1782 for (i = 1; i < items; ++i ) 2618 for (i = 1; i < items; ++i )
1783 av_push (av, newSVsv (ST (i))); 2619 av_push (av, newSVsv (ST (i)));
1784 2620
1785 SvREFCNT_dec (grp->sv1); 2621 SvREFCNT_dec (grp->sv1);
… …
1792 grp->errorno = errorno; 2628 grp->errorno = errorno;
1793 2629
1794void 2630void
1795limit (aio_req grp, int limit) 2631limit (aio_req grp, int limit)
1796 CODE: 2632 CODE:
1797 grp->int2 = limit; 2633 eio_grp_limit (grp, limit);
1798 aio_grp_feed (grp);
1799 2634
1800void 2635void
1801feed (aio_req grp, SV *callback=&PL_sv_undef) 2636feed (aio_req grp, SV *callback = &PL_sv_undef)
1802 CODE: 2637 CODE:
1803{ 2638{
1804 SvREFCNT_dec (grp->sv2); 2639 SvREFCNT_dec (grp->sv2);
1805 grp->sv2 = newSVsv (callback); 2640 grp->sv2 = newSVsv (callback);
2641 grp->feed = aio_grp_feed;
1806 2642
1807 if (grp->int2 <= 0) 2643 if (grp->int2 <= 0)
1808 grp->int2 = 2; 2644 grp->int2 = 2;
1809 2645
1810 aio_grp_feed (grp); 2646 eio_grp_limit (grp, grp->int2);
1811} 2647}
1812 2648

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