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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.226 by root, Sun Jan 6 11:48:14 2013 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"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
27#include <limits.h> 16#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 17#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 18#include <sched.h>
32 19
33#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
34# if __linux 24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
30# endif
31#endif
32
33/* perl namespace pollution */
34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
42#ifdef _WIN32
43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
79#else
80
81 #include <sys/time.h>
35# include <sys/sendfile.h> 82 #include <sys/select.h>
36# elif __freebsd 83 #include <unistd.h>
37# include <sys/socket.h> 84 #include <utime.h>
38# include <sys/uio.h> 85 #include <signal.h>
39# elif __hpux 86
40# include <sys/socket.h> 87 #define EIO_STRUCT_STAT Stat_t
41# elif __solaris /* not yet */ 88
42# include <sys/sendfile.h> 89#endif
90
91/*****************************************************************************/
92
93#if __GNUC__ >= 3
94# define expect(expr,value) __builtin_expect ((expr),(value))
95#else
96# define expect(expr,value) (expr)
97#endif
98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 SV *sv3, *sv4; \
114 STRLEN stroffset; \
115 SV *self;
116
117#define EIO_NO_WRAPPERS 1
118
119#include "libeio/config.h"
120#include "libeio/eio.h"
121
122static int req_invoke (eio_req *req);
123#define EIO_FINISH(req) req_invoke (req)
124static void req_destroy (eio_req *grp);
125#define EIO_DESTROY(req) req_destroy (req)
126
127#include "libeio/eio.c"
128
129#if !HAVE_POSIX_FADVISE
130# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
131#endif
132
133#if !HAVE_POSIX_MADVISE
134# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#ifndef MAP_ANONYMOUS
138# ifdef MAP_ANON
139# define MAP_ANONYMOUS MAP_ANON
43# else 140# else
44# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 142# endif
46#endif 143#endif
47 144
48/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 146#include "def0.h"
50 147
51/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
52#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
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 150#endif
151#ifndef major
152# define major(dev) ((dev) >> 8)
79#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
80 157
81/* buffer size for various temporary buffers */ 158#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
83 161
84#define dBUF \ 162/*****************************************************************************/
85 char *aio_buf; \ 163
86 LOCK (wrklock); \ 164static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 165fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 166{
89 if (!aio_buf) \ 167 req->result = -1;
168
169#if HAVE_FIEMAP
170 /* assume some c99 */
171 struct fiemap *fiemap = 0;
172 size_t end_offset;
173 int count = req->int3;
174
175 req->flags |= EIO_FLAG_PTR1_FREE;
176
177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
178 /* increase in 3.5kb steps */
179 if (count < 0)
180 count = 8;
181
182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
183 errno = ENOMEM;
184 if (!fiemap)
90 return -1; 185 return;
91 186
92enum { 187 req->ptr1 = fiemap;
93 REQ_QUIT,
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104};
105 188
106#define AIO_REQ_KLASS "IO::AIO::REQ" 189 fiemap->fm_start = req->offs;
107#define AIO_GRP_KLASS "IO::AIO::GRP" 190 fiemap->fm_length = req->size;
191 fiemap->fm_flags = req->int2;
192 fiemap->fm_extent_count = count;
108 193
109typedef struct aio_cb 194 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
110{ 195 return;
111 struct aio_cb *volatile next;
112 196
113 SV *callback, *fh; 197 if (req->int3 >= 0 /* not autosizing */
114 SV *sv1, *sv2; 198 || !fiemap->fm_mapped_extents /* no more extents */
115 void *ptr1, *ptr2; 199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
116 Stat_t *statdata; 200 goto done;
117 off_t offs;
118 size_t size;
119 ssize_t result;
120 201
121 STRLEN stroffset; 202 /* else we have to loop -
122 int type; 203 * it would be tempting (actually I tried that first) to just query the
123 int int1, int2; 204 * number of extents needed, but linux often feels like not returning all
124 int errorno; 205 * extents, without telling us it left any out. this complicates
125 mode_t mode; /* open */ 206 * this quite a bit.
207 */
126 208
127 unsigned char flags; 209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
128 unsigned char pri;
129 210
130 SV *self; /* the perl counterpart of this request, if any */ 211 for (;;)
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132} aio_cb;
133
134enum {
135 FLAG_CANCELLED = 0x01,
136 FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */
137};
138
139typedef aio_cb *aio_req;
140typedef aio_cb *aio_req_ornot;
141
142enum {
143 PRI_MIN = -4,
144 PRI_MAX = 4,
145
146 DEFAULT_PRI = 0,
147 PRI_BIAS = -PRI_MIN,
148 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149};
150
151#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153static unsigned int max_poll_time = 0;
154static unsigned int max_poll_reqs = 0;
155
156/* calculcate time difference in ~1/AIO_TICKS of a second */
157static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158{
159 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
161}
162
163static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165static unsigned int started, idle, wanted;
166
167#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169#else
170# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171#endif
172
173#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176/* worker threads management */
177static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179typedef struct worker {
180 /* locked by wrklock */
181 struct worker *prev, *next;
182
183 pthread_t tid;
184
185 /* locked by reslock, reqlock or wrklock */
186 aio_req req; /* currently processed request */
187 void *dbuf;
188 DIR *dirp;
189} worker;
190
191static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193static void worker_clear (worker *wrk)
194{
195 if (wrk->dirp)
196 { 212 {
197 closedir (wrk->dirp); 213 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
198 wrk->dirp = 0; 214 char scratch[3072];
199 } 215 struct fiemap *incmap = (struct fiemap *)scratch;
200 216
201 if (wrk->dbuf) 217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
202 { 218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
203 free (wrk->dbuf); 219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
204 wrk->dbuf = 0; 220 incmap->fm_flags = fiemap->fm_flags;
205 } 221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
206}
207 222
208static void worker_free (worker *wrk) 223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
209{
210 wrk->next->prev = wrk->prev;
211 wrk->prev->next = wrk->next;
212
213 free (wrk);
214}
215
216static volatile unsigned int nreqs, nready, npending;
217static volatile unsigned int max_idle = 4;
218static volatile unsigned int max_outstanding = 0xffffffff;
219static int respipe [2];
220
221static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225#if WORDACCESS_UNSAFE
226
227static unsigned int get_nready ()
228{
229 unsigned int retval;
230
231 LOCK (reqlock);
232 retval = nready;
233 UNLOCK (reqlock);
234
235 return retval;
236}
237
238static unsigned int get_npending ()
239{
240 unsigned int retval;
241
242 LOCK (reslock);
243 retval = npending;
244 UNLOCK (reslock);
245
246 return retval;
247}
248
249static unsigned int get_nthreads ()
250{
251 unsigned int retval;
252
253 LOCK (wrklock);
254 retval = started;
255 UNLOCK (wrklock);
256
257 return retval;
258}
259
260#else
261
262# define get_nready() nready
263# define get_npending() npending
264# define get_nthreads() started
265
266#endif
267
268/*
269 * a somewhat faster data structure might be nice, but
270 * with 8 priorities this actually needs <20 insns
271 * per shift, the most expensive operation.
272 */
273typedef struct {
274 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275 int size;
276} reqq;
277
278static reqq req_queue;
279static reqq res_queue;
280
281int reqq_push (reqq *q, aio_req req)
282{
283 int pri = req->pri;
284 req->next = 0;
285
286 if (q->qe[pri])
287 {
288 q->qe[pri]->next = req;
289 q->qe[pri] = req;
290 }
291 else
292 q->qe[pri] = q->qs[pri] = req;
293
294 return q->size++;
295}
296
297aio_req reqq_shift (reqq *q)
298{
299 int pri;
300
301 if (!q->size)
302 return 0; 224 return;
303 225
304 --q->size; 226 if (!incmap->fm_mapped_extents)
227 goto done;
305 228
306 for (pri = NUM_PRI; pri--; ) 229 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
307 { 230 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
308 aio_req req = q->qs[pri]; 231 errno = ENOMEM;
309
310 if (req) 232 if (!fiemap)
233 return;
234
235 req->ptr1 = fiemap;
236
237 for (count = 0; count < incmap->fm_mapped_extents; ++count)
311 { 238 {
312 if (!(q->qs[pri] = req->next)) 239 struct fiemap_extent *e = incmap->fm_extents + count;
313 q->qe[pri] = 0;
314 240
315 return req; 241 if (e->fe_logical + e->fe_length >= end_offset)
242 goto done;
243
244 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
245
246 if (e->fe_flags & FIEMAP_EXTENT_LAST)
247 goto done;
248
316 } 249 }
317 } 250 }
318 251
319 abort (); 252done:
320} 253 req->result = 0;
321 254
322static int poll_cb (); 255#else
323static void req_invoke (aio_req req); 256 errno = ENOSYS;
257#endif
258}
259
260/*****************************************************************************/
261
262enum {
263 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
264};
265
266typedef eio_req *aio_req;
267typedef eio_req *aio_req_ornot;
268typedef eio_wd aio_wd;
269
270static SV *on_next_submit;
271static int next_pri = EIO_PRI_DEFAULT;
272static int max_outstanding;
273
274static s_epipe respipe;
275
324static void req_free (aio_req req); 276static void req_destroy (aio_req req);
325static void req_cancel (aio_req req); 277static void req_cancel (aio_req req);
326 278
279static void
280want_poll (void)
281{
282 /* write a dummy byte to the pipe so fh becomes ready */
283 s_epipe_signal (&respipe);
284}
285
286static void
287done_poll (void)
288{
289 /* read any signals sent by the worker threads */
290 s_epipe_drain (&respipe);
291}
292
327/* must be called at most once */ 293/* must be called at most once */
328static SV *req_sv (aio_req req, const char *klass) 294static SV *
295req_sv (aio_req req, HV *stash)
329{ 296{
330 if (!req->self) 297 if (!req->self)
331 { 298 {
332 req->self = (SV *)newHV (); 299 req->self = (SV *)newHV ();
333 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 300 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334 } 301 }
335 302
336 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 303 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337} 304}
338 305
339static aio_req SvAIO_REQ (SV *sv) 306static SV *
307newSVaio_wd (aio_wd wd)
308{
309 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
310}
311
312static aio_req
313SvAIO_REQ (SV *sv)
340{ 314{
341 MAGIC *mg; 315 MAGIC *mg;
342 316
343 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 317 if (!SvROK (sv)
318 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
319 || (SvSTASH (SvRV (sv)) != aio_grp_stash
320 && SvSTASH (SvRV (sv)) != aio_req_stash
321 && !sv_derived_from (sv, "IO::AIO::REQ")))
344 croak ("object of class " AIO_REQ_KLASS " expected"); 322 croak ("object of class IO::AIO::REQ expected");
345 323
346 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 324 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347 325
348 return mg ? (aio_req)mg->mg_ptr : 0; 326 return mg ? (aio_req)mg->mg_ptr : 0;
349} 327}
350 328
329static aio_wd
330SvAIO_WD (SV *sv)
331{
332 if (!SvROK (sv)
333 || SvTYPE (SvRV (sv)) != SVt_PVMG
334 || SvSTASH (SvRV (sv)) != aio_wd_stash)
335 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
336
337 return (aio_wd)(long)SvIVX (SvRV (sv));
338}
339
340static void
351static void aio_grp_feed (aio_req grp) 341aio_grp_feed (aio_req grp)
352{ 342{
353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 343 if (grp->sv2 && SvOK (grp->sv2))
354 { 344 {
355 int old_len = grp->size;
356
357 if (grp->sv2 && SvOK (grp->sv2))
358 {
359 dSP; 345 dSP;
360 346
361 ENTER; 347 ENTER;
362 SAVETMPS; 348 SAVETMPS;
363 PUSHMARK (SP); 349 PUSHMARK (SP);
364 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 350 XPUSHs (req_sv (grp, aio_grp_stash));
365 PUTBACK; 351 PUTBACK;
366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 352 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367 SPAGAIN; 353 SPAGAIN;
368 FREETMPS; 354 FREETMPS;
369 LEAVE; 355 LEAVE;
370 }
371
372 /* stop if no progress has been made */
373 if (old_len == grp->size)
374 {
375 SvREFCNT_dec (grp->sv2);
376 grp->sv2 = 0;
377 break;
378 }
379 } 356 }
380} 357}
381 358
382static void aio_grp_dec (aio_req grp) 359static void
360req_submit (eio_req *req)
383{ 361{
384 --grp->size; 362 eio_submit (req);
385 363
386 /* call feeder, if applicable */ 364 if (expect_false (on_next_submit))
387 aio_grp_feed (grp);
388
389 /* finish, if done */
390 if (!grp->size && grp->int1)
391 { 365 {
392 req_invoke (grp); 366 dSP;
393 req_free (grp); 367 SV *cb = sv_2mortal (on_next_submit);
368
369 on_next_submit = 0;
370
371 PUSHMARK (SP);
372 PUTBACK;
373 call_sv (cb, G_DISCARD | G_EVAL);
394 } 374 }
395} 375}
396 376
377static int
397static void req_invoke (aio_req req) 378req_invoke (eio_req *req)
398{ 379{
399 dSP;
400
401 if (req->flags & FLAG_DATA_RO_OFF) 380 if (req->flags & FLAG_SV2_RO_OFF)
402 SvREADONLY_off (req->sv1); 381 SvREADONLY_off (req->sv2);
403 382
404 if (req->statdata) 383 if (!EIO_CANCELLED (req) && req->callback)
405 { 384 {
406 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 385 dSP;
407 PL_laststatval = req->result; 386 static SV *sv_result_cache; /* caches the result integer SV */
408 PL_statcache = *(req->statdata); 387 SV *sv_result;
409 }
410 388
411 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412 {
413 ENTER; 389 ENTER;
414 SAVETMPS; 390 SAVETMPS;
415 PUSHMARK (SP); 391 PUSHMARK (SP);
416 EXTEND (SP, 1); 392 EXTEND (SP, 1);
417 393
394 /* do not recreate the result IV from scratch each time */
395 if (expect_true (sv_result_cache))
396 {
397 sv_result = sv_result_cache; sv_result_cache = 0;
398 SvIV_set (sv_result, req->result);
399 SvIOK_only (sv_result);
400 }
401 else
402 {
403 sv_result = newSViv (req->result);
404 SvREADONLY_on (sv_result);
405 }
406
418 switch (req->type) 407 switch (req->type)
419 { 408 {
409 case EIO_WD_OPEN:
410 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
411 break;
412
420 case REQ_READDIR: 413 case EIO_READDIR:
421 { 414 {
422 SV *rv = &PL_sv_undef; 415 SV *rv = &PL_sv_undef;
423 416
424 if (req->result >= 0) 417 if (req->result >= 0)
425 { 418 {
426 int i; 419 int i;
427 char *buf = req->ptr2; 420 char *names = (char *)req->ptr2;
421 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428 AV *av = newAV (); 422 AV *av = newAV ();
429 423
430 av_extend (av, req->result - 1); 424 av_extend (av, req->result - 1);
431 425
432 for (i = 0; i < req->result; ++i) 426 for (i = 0; i < req->result; ++i)
433 { 427 {
434 SV *sv = newSVpv (buf, 0); 428 if (req->int1 & EIO_READDIR_DENTS)
429 {
430 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435 431
432 if (req->int1 & EIO_READDIR_CUSTOM2)
433 {
434 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
435 AV *avent = newAV ();
436
437 av_extend (avent, 2);
438
439 if (!sv_type [ent->type])
440 {
441 sv_type [ent->type] = newSViv (ent->type);
442 SvREADONLY_on (sv_type [ent->type]);
443 }
444
445 av_store (avent, 0, namesv);
446 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
447 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
448
449 av_store (av, i, newRV_noinc ((SV *)avent));
450 }
451 else
436 av_store (av, i, sv); 452 av_store (av, i, namesv);
453
454 ++ent;
455 }
456 else
457 {
458 SV *name = newSVpv (names, 0);
459 av_store (av, i, name);
437 buf += SvCUR (sv) + 1; 460 names += SvCUR (name) + 1;
461 }
438 } 462 }
439 463
440 rv = sv_2mortal (newRV_noinc ((SV *)av)); 464 rv = sv_2mortal (newRV_noinc ((SV *)av));
441 } 465 }
442 466
443 PUSHs (rv); 467 PUSHs (rv);
468
469 if (req->int1 & EIO_READDIR_CUSTOM1)
470 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444 } 471 }
445 break; 472 break;
446 473
447 case REQ_OPEN: 474 case EIO_OPEN:
448 { 475 {
449 /* convert fd to fh */ 476 /* convert fd to fh */
450 SV *fh; 477 SV *fh = &PL_sv_undef;
451 478
452 PUSHs (sv_2mortal (newSViv (req->result))); 479 if (req->result >= 0)
453 PUTBACK; 480 {
454 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 481 GV *gv = (GV *)sv_newmortal ();
455 SPAGAIN; 482 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
483 char sym [64];
484 int symlen;
485
486 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
487 gv_init (gv, aio_stash, sym, symlen, 0);
456 488
457 fh = SvREFCNT_inc (POPs); 489 symlen = snprintf (
490 sym,
491 sizeof (sym),
492 "%s&=%d",
493 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
494 (int)req->result
495 );
458 496
497 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
498 fh = (SV *)gv;
499 }
500
459 PUSHMARK (SP); 501 PUSHs (fh);
460 XPUSHs (sv_2mortal (fh));
461 } 502 }
462 break; 503 break;
463 504
505 case EIO_STATVFS:
506 case EIO_FSTATVFS:
507 {
508 SV *rv = &PL_sv_undef;
509
510#ifndef _WIN32
511 if (req->result >= 0)
512 {
513 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
514 HV *hv = newHV ();
515 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
516 * chooses to make it a struct.
517 */
518 unsigned long fsid = 0;
519 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
520
521 rv = sv_2mortal (newRV_noinc ((SV *)hv));
522
523 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
524 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
525 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
526 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
527 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
528 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
529 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
530 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
531 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
532 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
533 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
534 }
535#endif
536
537 PUSHs (rv);
538 }
539
540 break;
541
464 case REQ_GROUP: 542 case EIO_GROUP:
465 req->int1 = 2; /* mark group as finished */ 543 req->int1 = 2; /* mark group as finished */
466 544
467 if (req->sv1) 545 if (req->sv1)
468 { 546 {
469 int i; 547 int i;
… …
473 for (i = 0; i <= AvFILL (av); ++i) 551 for (i = 0; i <= AvFILL (av); ++i)
474 PUSHs (*av_fetch (av, i, 0)); 552 PUSHs (*av_fetch (av, i, 0));
475 } 553 }
476 break; 554 break;
477 555
478 case REQ_NOP: 556 case EIO_NOP:
479 case REQ_BUSY: 557 case EIO_BUSY:
480 break; 558 break;
481 559
482 case REQ_READLINK: 560 case EIO_READLINK:
561 case EIO_REALPATH:
483 if (req->result > 0) 562 if (req->result > 0)
563 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
564 break;
565
566 case EIO_STAT:
567 case EIO_LSTAT:
568 case EIO_FSTAT:
569 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
570
571 if (!(PL_laststatval = req->result))
572 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
573 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
574
575 PUSHs (sv_result);
576 break;
577
578 case EIO_SEEK:
579 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
580 break;
581
582 case EIO_READ:
583 {
584 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
585 *SvEND (req->sv2) = 0;
586 SvPOK_only (req->sv2);
587 SvSETMAGIC (req->sv2);
588 PUSHs (sv_result);
589 }
590 break;
591
592 case EIO_CUSTOM:
593 if (req->feed == fiemap)
484 { 594 {
485 SvCUR_set (req->sv1, req->result); 595#if HAVE_FIEMAP
486 *SvEND (req->sv1) = 0;
487 PUSHs (req->sv1); 596 if (!req->result)
597 {
598 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
599
600 if (fiemap->fm_extent_count)
601 {
602 AV *av = newAV ();
603 int i;
604
605 while (fiemap->fm_mapped_extents)
606 {
607 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
608 AV *ext_av = newAV ();
609
610 av_store (ext_av, 3, newSVuv (extent->fe_flags));
611 av_store (ext_av, 2, newSVval64 (extent->fe_length));
612 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
613 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
614
615 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
616 }
617
618 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
619 }
620 else
621 {
622 SvIV_set (sv_result, fiemap->fm_mapped_extents);
623 PUSHs (sv_result);
624 }
625 }
626#endif
488 } 627 }
628 else
629 PUSHs (sv_result);
489 break; 630 break;
490 631
491 case REQ_READ: 632 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
492 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 633 if (req->result > 0)
493 *SvEND (req->sv1) = 0; 634 SvIV_set (sv_result, 0);
494 /* fall through */ 635 /* FALLTHROUGH */
636
495 default: 637 default:
496 PUSHs (sv_2mortal (newSViv (req->result))); 638 PUSHs (sv_result);
497 break; 639 break;
498 } 640 }
499 641
500 errno = req->errorno; 642 errno = req->errorno;
501 643
502 PUTBACK; 644 PUTBACK;
503 call_sv (req->callback, G_VOID | G_EVAL); 645 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504 SPAGAIN; 646 SPAGAIN;
647
648 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
649 SvREFCNT_dec (sv_result);
650 else
651 sv_result_cache = sv_result;
505 652
506 FREETMPS; 653 FREETMPS;
507 LEAVE; 654 LEAVE;
655
656 PUTBACK;
508 } 657 }
509 658
510 if (req->grp) 659 return !!SvTRUE (ERRSV);
511 {
512 aio_req grp = req->grp;
513
514 /* unlink request */
515 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518 if (grp->grp_first == req)
519 grp->grp_first = req->grp_next;
520
521 aio_grp_dec (grp);
522 }
523
524 if (SvTRUE (ERRSV))
525 {
526 req_free (req);
527 croak (0);
528 }
529} 660}
530 661
531static void req_free (aio_req req) 662static void
663req_destroy (aio_req req)
532{ 664{
533 if (req->self) 665 if (req->self)
534 { 666 {
535 sv_unmagic (req->self, PERL_MAGIC_ext); 667 sv_unmagic (req->self, PERL_MAGIC_ext);
536 SvREFCNT_dec (req->self); 668 SvREFCNT_dec (req->self);
537 } 669 }
538 670
539 SvREFCNT_dec (req->fh);
540 SvREFCNT_dec (req->sv1); 671 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2); 672 SvREFCNT_dec (req->sv2);
673 SvREFCNT_dec (req->sv3);
674 SvREFCNT_dec (req->sv4);
542 SvREFCNT_dec (req->callback); 675 SvREFCNT_dec (req->callback);
543 Safefree (req->statdata);
544 676
545 if (req->type == REQ_READDIR)
546 free (req->ptr2);
547
548 Safefree (req); 677 free (req);
549} 678}
550 679
680static void
551static void req_cancel_subs (aio_req grp) 681req_cancel_subs (aio_req grp)
552{ 682{
553 aio_req sub;
554
555 if (grp->type != REQ_GROUP) 683 if (grp->type != EIO_GROUP)
556 return; 684 return;
557 685
558 SvREFCNT_dec (grp->sv2); 686 SvREFCNT_dec (grp->sv2);
559 grp->sv2 = 0; 687 grp->sv2 = 0;
560 688
561 for (sub = grp->grp_first; sub; sub = sub->grp_next) 689 eio_grp_cancel (grp);
562 req_cancel (sub);
563} 690}
564 691
565static void req_cancel (aio_req req) 692static void ecb_cold
693create_respipe (void)
566{ 694{
567 req->flags |= FLAG_CANCELLED; 695 if (s_epipe_renew (&respipe))
568 696 croak ("IO::AIO: unable to initialize result pipe");
569 req_cancel_subs (req);
570} 697}
571 698
572static void *aio_proc(void *arg); 699static void
573 700poll_wait (void)
574static void start_thread (void)
575{ 701{
576 sigset_t fullsigset, oldsigset;
577 pthread_attr_t attr;
578
579 worker *wrk = calloc (1, sizeof (worker));
580
581 if (!wrk)
582 croak ("unable to allocate worker thread data");
583
584 pthread_attr_init (&attr);
585 pthread_attr_setstacksize (&attr, STACKSIZE);
586 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587#ifdef PTHREAD_SCOPE_PROCESS
588 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589#endif
590
591 sigfillset (&fullsigset);
592
593 LOCK (wrklock);
594 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597 {
598 wrk->prev = &wrk_first;
599 wrk->next = wrk_first.next;
600 wrk_first.next->prev = wrk;
601 wrk_first.next = wrk;
602 ++started;
603 }
604 else
605 free (wrk);
606
607 sigprocmask (SIG_SETMASK, &oldsigset, 0);
608 UNLOCK (wrklock);
609}
610
611static void maybe_start_thread ()
612{
613 if (get_nthreads () >= wanted)
614 return;
615
616 /* todo: maybe use idle here, but might be less exact */
617 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618 return;
619
620 start_thread ();
621}
622
623static void req_send (aio_req req)
624{
625 ++nreqs;
626
627 LOCK (reqlock);
628 ++nready;
629 reqq_push (&req_queue, req);
630 pthread_cond_signal (&reqwait);
631 UNLOCK (reqlock);
632
633 maybe_start_thread ();
634}
635
636static void end_thread (void)
637{
638 aio_req req;
639
640 Newz (0, req, 1, aio_cb);
641
642 req->type = REQ_QUIT;
643 req->pri = PRI_MAX + PRI_BIAS;
644
645 LOCK (reqlock);
646 reqq_push (&req_queue, req);
647 pthread_cond_signal (&reqwait);
648 UNLOCK (reqlock);
649
650 LOCK (wrklock);
651 --started;
652 UNLOCK (wrklock);
653}
654
655static void set_max_idle (int nthreads)
656{
657 if (WORDACCESS_UNSAFE) LOCK (reqlock);
658 max_idle = nthreads <= 0 ? 1 : nthreads;
659 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660}
661
662static void min_parallel (int nthreads)
663{
664 if (wanted < nthreads)
665 wanted = nthreads;
666}
667
668static void max_parallel (int nthreads)
669{
670 if (wanted > nthreads)
671 wanted = nthreads;
672
673 while (started > wanted)
674 end_thread ();
675}
676
677static void poll_wait ()
678{
679 fd_set rfd;
680
681 while (nreqs) 702 while (eio_nreqs ())
682 { 703 {
683 int size; 704 int size;
684 if (WORDACCESS_UNSAFE) LOCK (reslock); 705
706 X_LOCK (reslock);
685 size = res_queue.size; 707 size = res_queue.size;
686 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 708 X_UNLOCK (reslock);
687 709
688 if (size) 710 if (size)
689 return; 711 return;
690 712
691 maybe_start_thread (); 713 etp_maybe_start_thread ();
692 714
693 FD_ZERO(&rfd); 715 s_epipe_wait (&respipe);
694 FD_SET(respipe [0], &rfd);
695
696 select (respipe [0] + 1, &rfd, 0, 0, 0);
697 } 716 }
698} 717}
699 718
700static int poll_cb () 719static int
720poll_cb (void)
701{ 721{
702 dSP;
703 int count = 0;
704 int maxreqs = max_poll_reqs;
705 int do_croak = 0;
706 struct timeval tv_start, tv_now;
707 aio_req req;
708
709 if (max_poll_time)
710 gettimeofday (&tv_start, 0);
711
712 for (;;) 722 for (;;)
713 { 723 {
714 for (;;) 724 int res = eio_poll ();
725
726 if (res > 0)
727 croak (0);
728
729 if (!max_outstanding || max_outstanding > eio_nreqs ())
730 return res;
731
732 poll_wait ();
733 }
734}
735
736static void ecb_cold
737reinit (void)
738{
739 create_respipe ();
740
741 if (eio_init (want_poll, done_poll) < 0)
742 croak ("IO::AIO: unable to initialise eio library");
743}
744
745/*****************************************************************************/
746
747#if !_POSIX_MAPPED_FILES
748# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
749# define munmap(addr,length) EIO_ENOSYS ()
750#endif
751
752#if !_POSIX_MEMORY_PROTECTION
753# define mprotect(addr,len,prot) EIO_ENOSYS ()
754# define PROT_NONE 0
755# define PROT_WRITE 0
756# define MAP_PRIVATE 0
757# define MAP_SHARED 0
758# define MAP_FIXED 0
759#endif
760
761#define MMAP_MAGIC PERL_MAGIC_ext
762
763static int ecb_cold
764mmap_free (pTHX_ SV *sv, MAGIC *mg)
765{
766 int old_errno = errno;
767 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
768 errno = old_errno;
769
770 mg->mg_obj = 0; /* just in case */
771
772 SvREADONLY_off (sv);
773
774 if (SvPVX (sv) != mg->mg_ptr)
775 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
776
777 SvCUR_set (sv, 0);
778 SvPVX (sv) = 0;
779 SvOK_off (sv);
780
781 return 0;
782}
783
784static MGVTBL mmap_vtbl = {
785 0, 0, 0, 0, mmap_free
786};
787
788/*****************************************************************************/
789
790static SV *
791get_cb (SV *cb_sv)
792{
793 SvGETMAGIC (cb_sv);
794 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
795}
796
797static aio_req ecb_noinline
798dreq (SV *callback)
799{
800 SV *cb_cv;
801 aio_req req;
802 int req_pri = next_pri;
803 next_pri = EIO_PRI_DEFAULT;
804
805 cb_cv = get_cb (callback);
806
807 req = calloc (sizeof (*req), 1);
808 if (!req)
809 croak ("out of memory during eio_req allocation");
810
811 req->callback = SvREFCNT_inc (cb_cv);
812 req->pri = req_pri;
813
814 return req;
815}
816
817#define dREQ \
818 aio_req req = dreq (callback); \
819
820#define REQ_SEND \
821 PUTBACK; \
822 req_submit (req); \
823 SPAGAIN; \
824 \
825 if (GIMME_V != G_VOID) \
826 XPUSHs (req_sv (req, aio_req_stash));
827
828ecb_inline void
829req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
830{
831 if (expect_false (SvROK (path)))
832 {
833 SV *rv = SvRV (path);
834 SV *wdob;
835
836 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715 { 837 {
716 maybe_start_thread (); 838 path = AvARRAY (rv)[1];
839 wdob = AvARRAY (rv)[0];
717 840
718 LOCK (reslock); 841 if (SvOK (wdob))
719 req = reqq_shift (&res_queue);
720
721 if (req)
722 { 842 {
723 --npending; 843 *wd = SvAIO_WD (wdob);
724 844 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725 if (!res_queue.size)
726 {
727 /* read any signals sent by the worker threads */
728 char buf [32];
729 while (read (respipe [0], buf, 32) == 32)
730 ;
731 }
732 }
733
734 UNLOCK (reslock);
735
736 if (!req)
737 break;
738
739 --nreqs;
740
741 if (req->type == REQ_GROUP && req->size)
742 {
743 req->int1 = 1; /* mark request as delayed */
744 continue;
745 } 845 }
746 else 846 else
747 { 847 *wd = EIO_INVALID_WD;
748 req_invoke (req);
749
750 count++;
751 }
752
753 req_free (req);
754
755 if (maxreqs && !--maxreqs)
756 break;
757
758 if (max_poll_time)
759 {
760 gettimeofday (&tv_now, 0);
761
762 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763 break;
764 }
765 } 848 }
849 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
850 {
851 *wd = (aio_wd)(long)SvIVX (rv);
852 *wdsv = SvREFCNT_inc_NN (rv);
853 *ptr = ".";
854 return; /* path set to "." */
855 }
856 else
857 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
858 }
766 859
767 if (nreqs <= max_outstanding) 860 *pathsv = newSVsv (path);
861 *ptr = SvPVbyte_nolen (*pathsv);
862}
863
864static void ecb_noinline
865req_set_path1 (aio_req req, SV *path)
866{
867 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
868}
869
870static void ecb_noinline
871req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
872{
873 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
874
875 switch (SvTYPE (rv))
876 {
877 case SVt_PVIO:
878 case SVt_PVLV:
879 case SVt_PVGV:
880 req->type = type_fh;
881 req->sv1 = newSVsv (fh_or_path);
882 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
768 break; 883 break;
769 884
770 poll_wait (); 885 default:
771 886 req->type = type_path;
772 ++maxreqs; 887 req_set_path1 (req, fh_or_path);
888 break;
773 } 889 }
774
775 return count;
776} 890}
777 891
778static void create_pipe () 892XS(boot_IO__AIO) ecb_cold;
779{
780 if (pipe (respipe))
781 croak ("unable to initialize result pipe");
782 893
783 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784 croak ("cannot set result pipe to nonblocking mode");
785
786 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787 croak ("cannot set result pipe to nonblocking mode");
788}
789
790/*****************************************************************************/
791/* work around various missing functions */
792
793#if !HAVE_PREADWRITE
794# define pread aio_pread
795# define pwrite aio_pwrite
796
797/*
798 * make our pread/pwrite safe against themselves, but not against
799 * normal read/write by using a mutex. slows down execution a lot,
800 * but that's your problem, not mine.
801 */
802static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805{
806 ssize_t res;
807 off_t ooffset;
808
809 LOCK (preadwritelock);
810 ooffset = lseek (fd, 0, SEEK_CUR);
811 lseek (fd, offset, SEEK_SET);
812 res = read (fd, buf, count);
813 lseek (fd, ooffset, SEEK_SET);
814 UNLOCK (preadwritelock);
815
816 return res;
817}
818
819static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820{
821 ssize_t res;
822 off_t ooffset;
823
824 LOCK (preadwritelock);
825 ooffset = lseek (fd, 0, SEEK_CUR);
826 lseek (fd, offset, SEEK_SET);
827 res = write (fd, buf, count);
828 lseek (fd, offset, SEEK_SET);
829 UNLOCK (preadwritelock);
830
831 return res;
832}
833#endif
834
835#if !HAVE_FDATASYNC
836# define fdatasync fsync
837#endif
838
839#if !HAVE_READAHEAD
840# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843{
844 dBUF;
845
846 while (count > 0)
847 {
848 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850 pread (fd, aio_buf, len, offset);
851 offset += len;
852 count -= len;
853 }
854
855 errno = 0;
856}
857
858#endif
859
860#if !HAVE_READDIR_R
861# define readdir_r aio_readdir_r
862
863static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866{
867 struct dirent *e;
868 int errorno;
869
870 LOCK (readdirlock);
871
872 e = readdir (dirp);
873 errorno = errno;
874
875 if (e)
876 {
877 *res = ent;
878 strcpy (ent->d_name, e->d_name);
879 }
880 else
881 *res = 0;
882
883 UNLOCK (readdirlock);
884
885 errno = errorno;
886 return e ? 0 : -1;
887}
888#endif
889
890/* sendfile always needs emulation */
891static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892{
893 ssize_t res;
894
895 if (!count)
896 return 0;
897
898#if HAVE_SENDFILE
899# if __linux
900 res = sendfile (ofd, ifd, &offset, count);
901
902# elif __freebsd
903 /*
904 * Of course, the freebsd sendfile is a dire hack with no thoughts
905 * wasted on making it similar to other I/O functions.
906 */
907 {
908 off_t sbytes;
909 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910
911 if (res < 0 && sbytes)
912 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913 res = sbytes;
914 }
915
916# elif __hpux
917 res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919# elif __solaris
920 {
921 struct sendfilevec vec;
922 size_t sbytes;
923
924 vec.sfv_fd = ifd;
925 vec.sfv_flag = 0;
926 vec.sfv_off = offset;
927 vec.sfv_len = count;
928
929 res = sendfilev (ofd, &vec, 1, &sbytes);
930
931 if (res < 0 && sbytes)
932 res = sbytes;
933 }
934
935# endif
936#else
937 res = -1;
938 errno = ENOSYS;
939#endif
940
941 if (res < 0
942 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943#if __solaris
944 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
945#endif
946 )
947 )
948 {
949 /* emulate sendfile. this is a major pain in the ass */
950 dBUF;
951
952 res = 0;
953
954 while (count)
955 {
956 ssize_t cnt;
957
958 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959
960 if (cnt <= 0)
961 {
962 if (cnt && !res) res = -1;
963 break;
964 }
965
966 cnt = write (ofd, aio_buf, cnt);
967
968 if (cnt <= 0)
969 {
970 if (cnt && !res) res = -1;
971 break;
972 }
973
974 offset += cnt;
975 res += cnt;
976 count -= cnt;
977 }
978 }
979
980 return res;
981}
982
983/* read a full directory */
984static void scandir_ (aio_req req, worker *self)
985{
986 DIR *dirp;
987 union
988 {
989 struct dirent d;
990 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991 } *u;
992 struct dirent *entp;
993 char *name, *names;
994 int memlen = 4096;
995 int memofs = 0;
996 int res = 0;
997 int errorno;
998
999 LOCK (wrklock);
1000 self->dirp = dirp = opendir (req->ptr1);
1001 self->dbuf = u = malloc (sizeof (*u));
1002 req->ptr2 = names = malloc (memlen);
1003 UNLOCK (wrklock);
1004
1005 if (dirp && u && names)
1006 for (;;)
1007 {
1008 errno = 0;
1009 readdir_r (dirp, &u->d, &entp);
1010
1011 if (!entp)
1012 break;
1013
1014 name = entp->d_name;
1015
1016 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017 {
1018 int len = strlen (name) + 1;
1019
1020 res++;
1021
1022 while (memofs + len > memlen)
1023 {
1024 memlen *= 2;
1025 LOCK (wrklock);
1026 req->ptr2 = names = realloc (names, memlen);
1027 UNLOCK (wrklock);
1028
1029 if (!names)
1030 break;
1031 }
1032
1033 memcpy (names + memofs, name, len);
1034 memofs += len;
1035 }
1036 }
1037
1038 if (errno)
1039 res = -1;
1040
1041 req->result = res;
1042}
1043
1044/*****************************************************************************/
1045
1046static void *aio_proc (void *thr_arg)
1047{
1048 aio_req req;
1049 struct timespec ts;
1050 worker *self = (worker *)thr_arg;
1051
1052 /* try to distribute timeouts somewhat evenly */
1053 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054 * (1000000000UL / 1024UL);
1055
1056 for (;;)
1057 {
1058 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060 LOCK (reqlock);
1061
1062 for (;;)
1063 {
1064 self->req = req = reqq_shift (&req_queue);
1065
1066 if (req)
1067 break;
1068
1069 ++idle;
1070
1071 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072 == ETIMEDOUT)
1073 {
1074 if (idle > max_idle)
1075 {
1076 --idle;
1077 UNLOCK (reqlock);
1078 LOCK (wrklock);
1079 --started;
1080 UNLOCK (wrklock);
1081 goto quit;
1082 }
1083
1084 /* we are allowed to idle, so do so without any timeout */
1085 pthread_cond_wait (&reqwait, &reqlock);
1086 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087 }
1088
1089 --idle;
1090 }
1091
1092 --nready;
1093
1094 UNLOCK (reqlock);
1095
1096 errno = 0; /* strictly unnecessary */
1097
1098 if (!(req->flags & FLAG_CANCELLED))
1099 switch (req->type)
1100 {
1101 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107 case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108 case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109 case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112 case REQ_CLOSE: req->result = close (req->int1); break;
1113 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122 case REQ_FSYNC: req->result = fsync (req->int1); break;
1123 case REQ_READDIR: scandir_ (req, self); break;
1124
1125 case REQ_BUSY:
1126 {
1127 struct timeval tv;
1128
1129 tv.tv_sec = req->int1;
1130 tv.tv_usec = req->int2;
1131
1132 req->result = select (0, 0, 0, 0, &tv);
1133 }
1134
1135 case REQ_GROUP:
1136 case REQ_NOP:
1137 break;
1138
1139 case REQ_QUIT:
1140 goto quit;
1141
1142 default:
1143 req->result = ENOSYS;
1144 break;
1145 }
1146
1147 req->errorno = errno;
1148
1149 LOCK (reslock);
1150
1151 ++npending;
1152
1153 if (!reqq_push (&res_queue, req))
1154 /* write a dummy byte to the pipe so fh becomes ready */
1155 write (respipe [1], &respipe, 1);
1156
1157 self->req = 0;
1158 worker_clear (self);
1159
1160 UNLOCK (reslock);
1161 }
1162
1163quit:
1164 LOCK (wrklock);
1165 worker_free (self);
1166 UNLOCK (wrklock);
1167
1168 return 0;
1169}
1170
1171/*****************************************************************************/
1172
1173static void atfork_prepare (void)
1174{
1175 LOCK (wrklock);
1176 LOCK (reqlock);
1177 LOCK (reslock);
1178#if !HAVE_PREADWRITE
1179 LOCK (preadwritelock);
1180#endif
1181#if !HAVE_READDIR_R
1182 LOCK (readdirlock);
1183#endif
1184}
1185
1186static void atfork_parent (void)
1187{
1188#if !HAVE_READDIR_R
1189 UNLOCK (readdirlock);
1190#endif
1191#if !HAVE_PREADWRITE
1192 UNLOCK (preadwritelock);
1193#endif
1194 UNLOCK (reslock);
1195 UNLOCK (reqlock);
1196 UNLOCK (wrklock);
1197}
1198
1199static void atfork_child (void)
1200{
1201 aio_req prv;
1202
1203 while (prv = reqq_shift (&req_queue))
1204 req_free (prv);
1205
1206 while (prv = reqq_shift (&res_queue))
1207 req_free (prv);
1208
1209 while (wrk_first.next != &wrk_first)
1210 {
1211 worker *wrk = wrk_first.next;
1212
1213 if (wrk->req)
1214 req_free (wrk->req);
1215
1216 worker_clear (wrk);
1217 worker_free (wrk);
1218 }
1219
1220 started = 0;
1221 idle = 0;
1222 nreqs = 0;
1223 nready = 0;
1224 npending = 0;
1225
1226 close (respipe [0]);
1227 close (respipe [1]);
1228 create_pipe ();
1229
1230 atfork_parent ();
1231}
1232
1233#define dREQ \
1234 aio_req req; \
1235 int req_pri = next_pri; \
1236 next_pri = DEFAULT_PRI + PRI_BIAS; \
1237 \
1238 if (SvOK (callback) && !SvROK (callback)) \
1239 croak ("callback must be undef or of reference type"); \
1240 \
1241 Newz (0, req, 1, aio_cb); \
1242 if (!req) \
1243 croak ("out of memory during aio_req allocation"); \
1244 \
1245 req->callback = newSVsv (callback); \
1246 req->pri = req_pri
1247
1248#define REQ_SEND \
1249 req_send (req); \
1250 \
1251 if (GIMME_V != G_VOID) \
1252 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1253
1254MODULE = IO::AIO PACKAGE = IO::AIO 894MODULE = IO::AIO PACKAGE = IO::AIO
1255 895
1256PROTOTYPES: ENABLE 896PROTOTYPES: ENABLE
1257 897
1258BOOT: 898BOOT:
1259{ 899{
900 static const struct {
901 const char *name;
902 IV iv;
903 } *civ, const_iv[] = {
904# define const_niv(name, value) { # name, (IV) value },
905# define const_iv(name) { # name, (IV) name },
906# define const_eio(name) { # name, (IV) EIO_ ## name },
907
908 /* you have to re-run ./gendef0 after adding/Removing any constants here */
909
910 const_iv (ENOSYS)
911 const_iv (EXDEV)
912 const_iv (EBADR)
913
914 const_iv (O_RDONLY)
915 const_iv (O_WRONLY)
916 const_iv (O_RDWR)
917 const_iv (O_CREAT)
918 const_iv (O_TRUNC)
919 const_iv (O_EXCL)
920 const_iv (O_APPEND)
921
922 const_iv (O_ASYNC)
923 const_iv (O_DIRECT)
924 const_iv (O_NOATIME)
925
926 const_iv (O_CLOEXEC)
927 const_iv (O_NOCTTY)
928 const_iv (O_NOFOLLOW)
929 const_iv (O_NONBLOCK)
930 const_iv (O_EXEC)
931 const_iv (O_SEARCH)
932 const_iv (O_DIRECTORY)
933 const_iv (O_DSYNC)
934 const_iv (O_RSYNC)
935 const_iv (O_SYNC)
936 const_iv (O_TTY_INIT)
937
938 const_iv (S_IFIFO)
939 const_iv (S_IFCHR)
940 const_iv (S_IFBLK)
941 const_iv (S_IFLNK)
942 const_iv (S_IFREG)
943 const_iv (S_IFDIR)
944 const_iv (S_IFWHT)
945 const_iv (S_IFSOCK)
946 const_iv (S_IFMT)
947
948 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
949 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
950 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
951 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
952 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
953 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
954
955 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
956 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
957 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
958 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
959 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
960
961 const_iv (ST_RDONLY)
962 const_iv (ST_NOSUID)
963 const_iv (ST_NODEV)
964 const_iv (ST_NOEXEC)
965 const_iv (ST_SYNCHRONOUS)
966 const_iv (ST_MANDLOCK)
967 const_iv (ST_WRITE)
968 const_iv (ST_APPEND)
969 const_iv (ST_IMMUTABLE)
970 const_iv (ST_NOATIME)
971 const_iv (ST_NODIRATIME)
972 const_iv (ST_RELATIME)
973
974 const_iv (PROT_NONE)
975 const_iv (PROT_EXEC)
976 const_iv (PROT_READ)
977 const_iv (PROT_WRITE)
978
979 /*const_iv (MAP_FIXED)*/
980 const_iv (MAP_PRIVATE)
981 const_iv (MAP_SHARED)
982 const_iv (MAP_ANONYMOUS)
983
984 /* linuxish */
985 const_iv (MAP_HUGETLB)
986 const_iv (MAP_LOCKED)
987 const_iv (MAP_NORESERVE)
988 const_iv (MAP_POPULATE)
989 const_iv (MAP_NONBLOCK)
990
991 const_iv (FIEMAP_FLAG_SYNC)
992 const_iv (FIEMAP_FLAG_XATTR)
993 const_iv (FIEMAP_FLAGS_COMPAT)
994 const_iv (FIEMAP_EXTENT_LAST)
995 const_iv (FIEMAP_EXTENT_UNKNOWN)
996 const_iv (FIEMAP_EXTENT_DELALLOC)
997 const_iv (FIEMAP_EXTENT_ENCODED)
998 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
999 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1000 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1001 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1002 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1003 const_iv (FIEMAP_EXTENT_MERGED)
1004 const_iv (FIEMAP_EXTENT_SHARED)
1005
1006 const_iv (SPLICE_F_MOVE)
1007 const_iv (SPLICE_F_NONBLOCK)
1008 const_iv (SPLICE_F_MORE)
1009 const_iv (SPLICE_F_GIFT)
1010
1011 const_iv (SEEK_DATA)
1012 const_iv (SEEK_HOLE)
1013
1014 /* libeio constants */
1015 const_eio (SEEK_SET)
1016 const_eio (SEEK_CUR)
1017 const_eio (SEEK_END)
1018
1019 const_eio (MCL_FUTURE)
1020 const_eio (MCL_CURRENT)
1021
1022 const_eio (MS_ASYNC)
1023 const_eio (MS_INVALIDATE)
1024 const_eio (MS_SYNC)
1025
1026 const_eio (MT_MODIFY)
1027
1028 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1029 const_eio (SYNC_FILE_RANGE_WRITE)
1030 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1031
1032 const_eio (FALLOC_FL_KEEP_SIZE)
1033 const_eio (FALLOC_FL_PUNCH_HOLE)
1034
1035 const_eio (READDIR_DENTS)
1036 const_eio (READDIR_DIRS_FIRST)
1037 const_eio (READDIR_STAT_ORDER)
1038 const_eio (READDIR_FOUND_UNKNOWN)
1039
1040 const_eio (DT_UNKNOWN)
1041 const_eio (DT_FIFO)
1042 const_eio (DT_CHR)
1043 const_eio (DT_DIR)
1044 const_eio (DT_BLK)
1045 const_eio (DT_REG)
1046 const_eio (DT_LNK)
1047 const_eio (DT_SOCK)
1048 const_eio (DT_WHT)
1049 };
1050
1260 HV *stash = gv_stashpv ("IO::AIO", 1); 1051 aio_stash = gv_stashpv ("IO::AIO" , 1);
1052 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1053 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1054 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1261 1055
1262 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1056 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1263 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1057 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1264 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268 1058
1269 create_pipe (); 1059 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1270 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1271}
1272 1060
1061 reinit ();
1062}
1063
1273void 1064void
1065reinit ()
1066 PROTOTYPE:
1067
1068void
1274max_poll_reqs (int nreqs) 1069max_poll_reqs (unsigned int nreqs)
1275 PROTOTYPE: $ 1070 PROTOTYPE: $
1276 CODE: 1071 CODE:
1277 max_poll_reqs = nreqs; 1072 eio_set_max_poll_reqs (nreqs);
1278 1073
1279void 1074void
1280max_poll_time (double nseconds) 1075max_poll_time (double nseconds)
1281 PROTOTYPE: $ 1076 PROTOTYPE: $
1282 CODE: 1077 CODE:
1283 max_poll_time = nseconds * AIO_TICKS; 1078 eio_set_max_poll_time (nseconds);
1284 1079
1285void 1080void
1286min_parallel (int nthreads) 1081min_parallel (unsigned int nthreads)
1287 PROTOTYPE: $
1288
1289void
1290max_parallel (int nthreads)
1291 PROTOTYPE: $
1292
1293void
1294max_idle (int nthreads)
1295 PROTOTYPE: $ 1082 PROTOTYPE: $
1296 CODE: 1083 CODE:
1297 set_max_idle (nthreads); 1084 eio_set_min_parallel (nthreads);
1298 1085
1299int 1086void
1300max_outstanding (int maxreqs) 1087max_parallel (unsigned int nthreads)
1301 PROTOTYPE: $ 1088 PROTOTYPE: $
1302 CODE: 1089 CODE:
1303 RETVAL = max_outstanding; 1090 eio_set_max_parallel (nthreads);
1091
1092void
1093max_idle (unsigned int nthreads)
1094 PROTOTYPE: $
1095 CODE:
1096 eio_set_max_idle (nthreads);
1097
1098void
1099idle_timeout (unsigned int seconds)
1100 PROTOTYPE: $
1101 CODE:
1102 eio_set_idle_timeout (seconds);
1103
1104void
1105max_outstanding (unsigned int maxreqs)
1106 PROTOTYPE: $
1107 CODE:
1304 max_outstanding = maxreqs; 1108 max_outstanding = maxreqs;
1305 OUTPUT:
1306 RETVAL
1307 1109
1308void 1110void
1309aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1111aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1310 SV * pathname
1311 int flags
1312 int mode
1313 SV * callback
1314 PROTOTYPE: $$$;$
1315 PPCODE: 1112 PPCODE:
1316{ 1113{
1317 dREQ; 1114 dREQ;
1318 1115
1116 req->type = EIO_WD_OPEN;
1117 req_set_path1 (req, pathname);
1118
1119 REQ_SEND;
1120}
1121
1122void
1123aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1124 PPCODE:
1125{
1126 dREQ;
1127
1319 req->type = REQ_OPEN; 1128 req->type = EIO_OPEN;
1320 req->sv1 = newSVsv (pathname); 1129 req_set_path1 (req, pathname);
1321 req->ptr1 = SvPVbyte_nolen (pathname);
1322 req->int1 = flags; 1130 req->int1 = flags;
1323 req->mode = mode; 1131 req->int2 = mode;
1324 1132
1325 REQ_SEND; 1133 REQ_SEND;
1326} 1134}
1327 1135
1328void 1136void
1329aio_close (fh,callback=&PL_sv_undef) 1137aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330 SV * fh
1331 SV * callback
1332 PROTOTYPE: $;$
1333 ALIAS: 1138 ALIAS:
1334 aio_close = REQ_CLOSE
1335 aio_fsync = REQ_FSYNC 1139 aio_fsync = EIO_FSYNC
1336 aio_fdatasync = REQ_FDATASYNC 1140 aio_fdatasync = EIO_FDATASYNC
1141 aio_syncfs = EIO_SYNCFS
1337 PPCODE: 1142 PPCODE:
1338{ 1143{
1144 int fd = s_fileno_croak (fh, 0);
1339 dREQ; 1145 dREQ;
1340 1146
1341 req->type = ix; 1147 req->type = ix;
1342 req->fh = newSVsv (fh); 1148 req->sv1 = newSVsv (fh);
1343 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1149 req->int1 = fd;
1344 1150
1345 REQ_SEND (req); 1151 REQ_SEND;
1346} 1152}
1347 1153
1348void 1154void
1155aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1156 PPCODE:
1157{
1158 int fd = s_fileno_croak (fh, 0);
1159 dREQ;
1160
1161 req->type = EIO_SYNC_FILE_RANGE;
1162 req->sv1 = newSVsv (fh);
1163 req->int1 = fd;
1164 req->offs = offset;
1165 req->size = nbytes;
1166 req->int2 = flags;
1167
1168 REQ_SEND;
1169}
1170
1171void
1172aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1173 PPCODE:
1174{
1175 int fd = s_fileno_croak (fh, 0);
1176 dREQ;
1177
1178 req->type = EIO_FALLOCATE;
1179 req->sv1 = newSVsv (fh);
1180 req->int1 = fd;
1181 req->int2 = mode;
1182 req->offs = offset;
1183 req->size = len;
1184
1185 REQ_SEND;
1186}
1187
1188void
1189aio_close (SV *fh, SV *callback=&PL_sv_undef)
1190 PPCODE:
1191{
1192 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1193 int fd = s_fileno_croak (fh, 0);
1194 dREQ;
1195
1196 if (expect_false (close_fd < 0))
1197 {
1198 int pipefd [2];
1199
1200 if (
1201#ifdef _WIN32
1202 _pipe (pipefd, 1, _O_BINARY) < 0
1203#else
1204 pipe (pipefd) < 0
1205 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1206#endif
1207 || close (pipefd [1]) < 0
1208 )
1209 abort (); /*D*/
1210
1211 close_fd = pipefd [0];
1212 }
1213
1214 req->type = EIO_DUP2;
1215 req->int1 = close_fd;
1216 req->sv2 = newSVsv (fh);
1217 req->int2 = fd;
1218
1219 REQ_SEND;
1220}
1221
1222void
1223aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1224 PPCODE:
1225{
1226 int fd = s_fileno_croak (fh, 0);
1227 dREQ;
1228
1229 req->type = EIO_SEEK;
1230 req->sv1 = newSVsv (fh);
1231 req->int1 = fd;
1232 req->offs = SvVAL64 (offset);
1233 req->int2 = whence;
1234
1235 REQ_SEND;
1236}
1237
1238void
1349aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1239aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350 SV * fh
1351 UV offset
1352 UV length
1353 SV * data
1354 UV dataoffset
1355 SV * callback
1356 ALIAS: 1240 ALIAS:
1357 aio_read = REQ_READ 1241 aio_read = EIO_READ
1358 aio_write = REQ_WRITE 1242 aio_write = EIO_WRITE
1359 PROTOTYPE: $$$$$;$
1360 PPCODE: 1243 PPCODE:
1361{ 1244{
1362 STRLEN svlen; 1245 STRLEN svlen;
1246 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363 char *svptr = SvPVbyte (data, svlen); 1247 char *svptr = SvPVbyte (data, svlen);
1364 1248 UV len = SvUV (length);
1365 SvUPGRADE (data, SVt_PV);
1366 SvPOK_on (data);
1367 1249
1368 if (dataoffset < 0) 1250 if (dataoffset < 0)
1369 dataoffset += svlen; 1251 dataoffset += svlen;
1370 1252
1371 if (dataoffset < 0 || dataoffset > svlen) 1253 if (dataoffset < 0 || dataoffset > svlen)
1372 croak ("data offset outside of string"); 1254 croak ("dataoffset outside of data scalar");
1373 1255
1374 if (ix == REQ_WRITE) 1256 if (ix == EIO_WRITE)
1375 { 1257 {
1376 /* write: check length and adjust. */ 1258 /* write: check length and adjust. */
1377 if (length < 0 || length + dataoffset > svlen) 1259 if (!SvOK (length) || len + dataoffset > svlen)
1378 length = svlen - dataoffset; 1260 len = svlen - dataoffset;
1379 } 1261 }
1380 else 1262 else
1381 { 1263 {
1382 /* read: grow scalar as necessary */ 1264 /* read: check type and grow scalar as necessary */
1265 SvUPGRADE (data, SVt_PV);
1266 if (SvLEN (data) >= SvCUR (data))
1383 svptr = SvGROW (data, length + dataoffset); 1267 svptr = SvGROW (data, len + dataoffset + 1);
1268 else if (SvCUR (data) < len + dataoffset)
1269 croak ("length + dataoffset outside of scalar, and cannot grow");
1384 } 1270 }
1385
1386 if (length < 0)
1387 croak ("length must not be negative");
1388 1271
1389 { 1272 {
1390 dREQ; 1273 dREQ;
1391 1274
1392 req->type = ix; 1275 req->type = ix;
1393 req->fh = newSVsv (fh); 1276 req->sv1 = newSVsv (fh);
1394 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1277 req->int1 = fd;
1395 : IoOFP (sv_2io (fh))); 1278 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396 req->offs = offset;
1397 req->size = length; 1279 req->size = len;
1398 req->sv1 = SvREFCNT_inc (data); 1280 req->sv2 = SvREFCNT_inc (data);
1399 req->ptr1 = (char *)svptr + dataoffset; 1281 req->ptr2 = (char *)svptr + dataoffset;
1400 req->stroffset = dataoffset; 1282 req->stroffset = dataoffset;
1401 1283
1402 if (!SvREADONLY (data)) 1284 if (!SvREADONLY (data))
1403 { 1285 {
1404 SvREADONLY_on (data); 1286 SvREADONLY_on (data);
1405 req->flags |= FLAG_DATA_RO_OFF; 1287 req->flags |= FLAG_SV2_RO_OFF;
1406 } 1288 }
1407 1289
1408 REQ_SEND; 1290 REQ_SEND;
1409 } 1291 }
1410} 1292}
1411 1293
1412void 1294void
1413aio_readlink (path,callback=&PL_sv_undef) 1295aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414 SV * path 1296 ALIAS:
1415 SV * callback 1297 aio_readlink = EIO_READLINK
1416 PROTOTYPE: $$;$ 1298 aio_realpath = EIO_REALPATH
1417 PPCODE: 1299 PPCODE:
1418{ 1300{
1419 SV *data;
1420 dREQ; 1301 dREQ;
1421 1302
1422 data = newSV (NAME_MAX);
1423 SvPOK_on (data);
1424
1425 req->type = REQ_READLINK; 1303 req->type = ix;
1426 req->fh = newSVsv (path); 1304 req_set_path1 (req, pathname);
1427 req->ptr2 = SvPVbyte_nolen (path);
1428 req->sv1 = data;
1429 req->ptr1 = SvPVbyte_nolen (data);
1430 1305
1431 REQ_SEND; 1306 REQ_SEND;
1432} 1307}
1433 1308
1434void 1309void
1435aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1310aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1436 SV * out_fh
1437 SV * in_fh
1438 UV in_offset
1439 UV length
1440 SV * callback
1441 PROTOTYPE: $$$$;$
1442 PPCODE: 1311 PPCODE:
1443{ 1312{
1313 int ifd = s_fileno_croak (in_fh , 0);
1314 int ofd = s_fileno_croak (out_fh, 1);
1444 dREQ; 1315 dREQ;
1445 1316
1446 req->type = REQ_SENDFILE; 1317 req->type = EIO_SENDFILE;
1447 req->fh = newSVsv (out_fh); 1318 req->sv1 = newSVsv (out_fh);
1448 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1319 req->int1 = ofd;
1449 req->sv2 = newSVsv (in_fh); 1320 req->sv2 = newSVsv (in_fh);
1450 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1321 req->int2 = ifd;
1451 req->offs = in_offset; 1322 req->offs = in_offset;
1452 req->size = length; 1323 req->size = length;
1453 1324
1454 REQ_SEND; 1325 REQ_SEND;
1455} 1326}
1456 1327
1457void 1328void
1458aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1329aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1459 SV * fh
1460 UV offset
1461 IV length
1462 SV * callback
1463 PROTOTYPE: $$$;$
1464 PPCODE: 1330 PPCODE:
1465{ 1331{
1332 int fd = s_fileno_croak (fh, 0);
1466 dREQ; 1333 dREQ;
1467 1334
1468 req->type = REQ_READAHEAD; 1335 req->type = EIO_READAHEAD;
1469 req->fh = newSVsv (fh); 1336 req->sv1 = newSVsv (fh);
1470 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1337 req->int1 = fd;
1471 req->offs = offset; 1338 req->offs = offset;
1472 req->size = length; 1339 req->size = length;
1473 1340
1474 REQ_SEND; 1341 REQ_SEND;
1475} 1342}
1476 1343
1477void 1344void
1478aio_stat (fh_or_path,callback=&PL_sv_undef) 1345aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479 SV * fh_or_path
1480 SV * callback
1481 ALIAS: 1346 ALIAS:
1482 aio_stat = REQ_STAT 1347 aio_stat = EIO_STAT
1483 aio_lstat = REQ_LSTAT 1348 aio_lstat = EIO_LSTAT
1349 aio_statvfs = EIO_STATVFS
1484 PPCODE: 1350 PPCODE:
1485{ 1351{
1486 dREQ; 1352 dREQ;
1487 1353
1488 New (0, req->statdata, 1, Stat_t); 1354 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1489 if (!req->statdata)
1490 {
1491 req_free (req);
1492 croak ("out of memory during aio_req->statdata allocation");
1493 }
1494
1495 if (SvPOK (fh_or_path))
1496 {
1497 req->type = ix;
1498 req->sv1 = newSVsv (fh_or_path);
1499 req->ptr1 = SvPVbyte_nolen (fh_or_path);
1500 }
1501 else
1502 {
1503 req->type = REQ_FSTAT;
1504 req->fh = newSVsv (fh_or_path);
1505 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506 }
1507 1355
1508 REQ_SEND; 1356 REQ_SEND;
1509} 1357}
1510 1358
1359UV
1360major (UV dev)
1361 ALIAS:
1362 minor = 1
1363 CODE:
1364 RETVAL = ix ? major (dev) : minor (dev);
1365 OUTPUT:
1366 RETVAL
1367
1368UV
1369makedev (UV maj, UV min)
1370 CODE:
1371 RETVAL = makedev (maj, min);
1372 OUTPUT:
1373 RETVAL
1374
1511void 1375void
1376aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1377 PPCODE:
1378{
1379 dREQ;
1380
1381 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1382 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1383 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1384
1385 REQ_SEND;
1386}
1387
1388void
1389aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1390 PPCODE:
1391{
1392 dREQ;
1393
1394 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1395 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1396
1397 REQ_SEND;
1398}
1399
1400void
1401aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1402 PPCODE:
1403{
1404 dREQ;
1405
1406 req->int2 = mode;
1407 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1408
1409 REQ_SEND;
1410}
1411
1412void
1413aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1414 PPCODE:
1415{
1416 dREQ;
1417
1418 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1419 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1420 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1421
1422 REQ_SEND;
1423}
1424
1425void
1426aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1427 PPCODE:
1428{
1429 dREQ;
1430
1431 req->type = EIO_READDIR;
1432 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1433
1434 if (flags & EIO_READDIR_DENTS)
1435 req->int1 |= EIO_READDIR_CUSTOM2;
1436
1437 req_set_path1 (req, pathname);
1438
1439 REQ_SEND;
1440}
1441
1442void
1443aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1444 PPCODE:
1445{
1446 dREQ;
1447
1448 req->type = EIO_MKDIR;
1449 req->int2 = mode;
1450 req_set_path1 (req, pathname);
1451
1452 REQ_SEND;
1453}
1454
1455void
1512aio_unlink (pathname,callback=&PL_sv_undef) 1456aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513 SV * pathname
1514 SV * callback
1515 ALIAS: 1457 ALIAS:
1516 aio_unlink = REQ_UNLINK 1458 aio_unlink = EIO_UNLINK
1517 aio_rmdir = REQ_RMDIR 1459 aio_rmdir = EIO_RMDIR
1518 aio_readdir = REQ_READDIR 1460 aio_readdir = EIO_READDIR
1519 PPCODE: 1461 PPCODE:
1520{ 1462{
1521 dREQ; 1463 dREQ;
1522 1464
1523 req->type = ix; 1465 req->type = ix;
1524 req->sv1 = newSVsv (pathname); 1466 req_set_path1 (req, pathname);
1525 req->ptr1 = SvPVbyte_nolen (pathname); 1467
1526
1527 REQ_SEND; 1468 REQ_SEND;
1528} 1469}
1529 1470
1530void 1471void
1531aio_link (oldpath,newpath,callback=&PL_sv_undef) 1472aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532 SV * oldpath
1533 SV * newpath
1534 SV * callback
1535 ALIAS: 1473 ALIAS:
1536 aio_link = REQ_LINK 1474 aio_link = EIO_LINK
1537 aio_symlink = REQ_SYMLINK 1475 aio_symlink = EIO_SYMLINK
1538 aio_rename = REQ_RENAME 1476 aio_rename = EIO_RENAME
1539 PPCODE: 1477 PPCODE:
1540{ 1478{
1479 eio_wd wd2 = 0;
1541 dREQ; 1480 dREQ;
1542 1481
1543 req->type = ix; 1482 req->type = ix;
1544 req->fh = newSVsv (oldpath); 1483 req_set_path1 (req, oldpath);
1545 req->ptr2 = SvPVbyte_nolen (req->fh); 1484 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1546 req->sv1 = newSVsv (newpath); 1485 req->int3 = (long)wd2;
1547 req->ptr1 = SvPVbyte_nolen (newpath);
1548 1486
1549 REQ_SEND; 1487 REQ_SEND;
1550} 1488}
1551 1489
1552void 1490void
1553aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1491aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554 SV * pathname
1555 SV * callback
1556 UV mode
1557 UV dev
1558 PPCODE: 1492 PPCODE:
1559{ 1493{
1560 dREQ; 1494 dREQ;
1561 1495
1562 req->type = REQ_MKNOD; 1496 req->type = EIO_MKNOD;
1563 req->sv1 = newSVsv (pathname);
1564 req->ptr1 = SvPVbyte_nolen (pathname);
1565 req->mode = (mode_t)mode; 1497 req->int2 = (mode_t)mode;
1566 req->offs = dev; 1498 req->offs = dev;
1499 req_set_path1 (req, pathname);
1567 1500
1568 REQ_SEND; 1501 REQ_SEND;
1569} 1502}
1570 1503
1571void 1504void
1505aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1506 ALIAS:
1507 aio_mtouch = EIO_MTOUCH
1508 aio_msync = EIO_MSYNC
1509 PPCODE:
1510{
1511 STRLEN svlen;
1512 char *svptr = SvPVbyte (data, svlen);
1513 UV len = SvUV (length);
1514
1515 if (offset < 0)
1516 offset += svlen;
1517
1518 if (offset < 0 || offset > svlen)
1519 croak ("offset outside of scalar");
1520
1521 if (!SvOK (length) || len + offset > svlen)
1522 len = svlen - offset;
1523
1524 {
1525 dREQ;
1526
1527 req->type = ix;
1528 req->sv2 = SvREFCNT_inc (data);
1529 req->ptr2 = (char *)svptr + offset;
1530 req->size = len;
1531 req->int1 = flags;
1532
1533 REQ_SEND;
1534 }
1535}
1536
1537void
1538aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1539 PPCODE:
1540{
1541 STRLEN svlen;
1542 char *svptr = SvPVbyte (data, svlen);
1543 UV len = SvUV (length);
1544
1545 if (offset < 0)
1546 offset += svlen;
1547
1548 if (offset < 0 || offset > svlen)
1549 croak ("offset outside of scalar");
1550
1551 if (!SvOK (length) || len + offset > svlen)
1552 len = svlen - offset;
1553
1554 {
1555 dREQ;
1556
1557 req->type = EIO_MLOCK;
1558 req->sv2 = SvREFCNT_inc (data);
1559 req->ptr2 = (char *)svptr + offset;
1560 req->size = len;
1561
1562 REQ_SEND;
1563 }
1564}
1565
1566void
1567aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1568 PPCODE:
1569{
1570 dREQ;
1571
1572 req->type = EIO_MLOCKALL;
1573 req->int1 = flags;
1574
1575 REQ_SEND;
1576}
1577
1578void
1579aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1580 PPCODE:
1581{
1582 int fd = s_fileno_croak (fh, 0);
1583 dREQ;
1584
1585 req->type = EIO_CUSTOM;
1586 req->sv1 = newSVsv (fh);
1587 req->int1 = fd;
1588
1589 req->feed = fiemap;
1590#if HAVE_FIEMAP
1591 /* keep our fingers crossed that the next two types are 64 bit */
1592 req->offs = start;
1593 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1594 req->int2 = flags;
1595 req->int3 = SvOK (count) ? SvIV (count) : -1;
1596#endif
1597
1598 REQ_SEND;
1599}
1600
1601void
1572aio_busy (delay,callback=&PL_sv_undef) 1602aio_busy (double delay, SV *callback=&PL_sv_undef)
1573 double delay
1574 SV * callback
1575 PPCODE: 1603 PPCODE:
1576{ 1604{
1577 dREQ; 1605 dREQ;
1578 1606
1579 req->type = REQ_BUSY; 1607 req->type = EIO_BUSY;
1580 req->int1 = delay < 0. ? 0 : delay; 1608 req->nv1 = delay < 0. ? 0. : delay;
1581 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582 1609
1583 REQ_SEND; 1610 REQ_SEND;
1584} 1611}
1585 1612
1586void 1613void
1587aio_group (callback=&PL_sv_undef) 1614aio_group (SV *callback=&PL_sv_undef)
1588 SV * callback
1589 PROTOTYPE: ;$
1590 PPCODE: 1615 PPCODE:
1591{ 1616{
1592 dREQ; 1617 dREQ;
1593 1618
1594 req->type = REQ_GROUP; 1619 req->type = EIO_GROUP;
1595 1620
1596 req_send (req); 1621 req_submit (req);
1597 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1622 XPUSHs (req_sv (req, aio_grp_stash));
1598} 1623}
1599 1624
1600void 1625void
1601aio_nop (callback=&PL_sv_undef) 1626aio_nop (SV *callback=&PL_sv_undef)
1602 SV * callback 1627 ALIAS:
1628 aio_nop = EIO_NOP
1629 aio_sync = EIO_SYNC
1603 PPCODE: 1630 PPCODE:
1604{ 1631{
1605 dREQ; 1632 dREQ;
1606 1633
1607 req->type = REQ_NOP; 1634 req->type = ix;
1608 1635
1609 REQ_SEND; 1636 REQ_SEND;
1610} 1637}
1611 1638
1612int 1639int
1613aioreq_pri (int pri = 0) 1640aioreq_pri (int pri = 0)
1614 PROTOTYPE: ;$
1615 CODE: 1641 CODE:
1616 RETVAL = next_pri - PRI_BIAS; 1642 RETVAL = next_pri;
1617 if (items > 0) 1643 if (items > 0)
1618 { 1644 {
1619 if (pri < PRI_MIN) pri = PRI_MIN; 1645 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620 if (pri > PRI_MAX) pri = PRI_MAX; 1646 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621 next_pri = pri + PRI_BIAS; 1647 next_pri = pri;
1622 } 1648 }
1623 OUTPUT: 1649 OUTPUT:
1624 RETVAL 1650 RETVAL
1625 1651
1626void 1652void
1627aioreq_nice (int nice = 0) 1653aioreq_nice (int nice = 0)
1628 CODE: 1654 CODE:
1629 nice = next_pri - nice; 1655 nice = next_pri - nice;
1630 if (nice < PRI_MIN) nice = PRI_MIN; 1656 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631 if (nice > PRI_MAX) nice = PRI_MAX; 1657 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632 next_pri = nice + PRI_BIAS; 1658 next_pri = nice;
1633 1659
1634void 1660void
1635flush () 1661flush ()
1636 PROTOTYPE:
1637 CODE: 1662 CODE:
1638 while (nreqs) 1663 while (eio_nreqs ())
1639 { 1664 {
1640 poll_wait (); 1665 poll_wait ();
1641 poll_cb (0); 1666 poll_cb ();
1642 } 1667 }
1643 1668
1644void 1669int
1645poll() 1670poll ()
1646 PROTOTYPE:
1647 CODE: 1671 CODE:
1648 if (nreqs)
1649 {
1650 poll_wait (); 1672 poll_wait ();
1651 poll_cb (0); 1673 RETVAL = poll_cb ();
1652 }
1653
1654int
1655poll_fileno()
1656 PROTOTYPE:
1657 CODE:
1658 RETVAL = respipe [0];
1659 OUTPUT: 1674 OUTPUT:
1660 RETVAL 1675 RETVAL
1661 1676
1662int 1677int
1678poll_fileno ()
1679 CODE:
1680 RETVAL = s_epipe_fd (&respipe);
1681 OUTPUT:
1682 RETVAL
1683
1684int
1663poll_cb(...) 1685poll_cb (...)
1664 PROTOTYPE: 1686 PROTOTYPE:
1665 CODE: 1687 CODE:
1666 RETVAL = poll_cb (); 1688 RETVAL = poll_cb ();
1667 OUTPUT: 1689 OUTPUT:
1668 RETVAL 1690 RETVAL
1669 1691
1670void 1692void
1671poll_wait() 1693poll_wait ()
1672 PROTOTYPE:
1673 CODE: 1694 CODE:
1674 if (nreqs)
1675 poll_wait (); 1695 poll_wait ();
1676 1696
1677int 1697int
1678nreqs() 1698nreqs ()
1679 PROTOTYPE:
1680 CODE: 1699 CODE:
1681 RETVAL = nreqs; 1700 RETVAL = eio_nreqs ();
1682 OUTPUT: 1701 OUTPUT:
1683 RETVAL 1702 RETVAL
1684 1703
1685int 1704int
1686nready() 1705nready ()
1687 PROTOTYPE:
1688 CODE: 1706 CODE:
1689 RETVAL = get_nready (); 1707 RETVAL = eio_nready ();
1690 OUTPUT: 1708 OUTPUT:
1691 RETVAL 1709 RETVAL
1692 1710
1693int 1711int
1694npending() 1712npending ()
1695 PROTOTYPE:
1696 CODE: 1713 CODE:
1697 RETVAL = get_npending (); 1714 RETVAL = eio_npending ();
1698 OUTPUT: 1715 OUTPUT:
1699 RETVAL 1716 RETVAL
1700 1717
1701int 1718int
1702nthreads() 1719nthreads ()
1703 PROTOTYPE:
1704 CODE: 1720 CODE:
1705 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1721 RETVAL = eio_nthreads ();
1706 RETVAL = started;
1707 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708 OUTPUT: 1722 OUTPUT:
1709 RETVAL 1723 RETVAL
1710 1724
1725int
1726fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1727 CODE:
1728 RETVAL = posix_fadvise (fh, offset, length, advice);
1729 OUTPUT:
1730 RETVAL
1731
1732IV
1733sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1734 CODE:
1735 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1736 OUTPUT:
1737 RETVAL
1738
1739void
1740mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1741 PPCODE:
1742 sv_unmagic (scalar, MMAP_MAGIC);
1743{
1744 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1745 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1746 if (addr == (void *)-1)
1747 XSRETURN_NO;
1748
1749 sv_force_normal (scalar);
1750
1751 /* we store the length in mg_obj, as namlen is I32 :/ */
1752 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1753 ->mg_obj = (SV *)length;
1754
1755 SvUPGRADE (scalar, SVt_PV); /* nop... */
1756
1757 if (!(prot & PROT_WRITE))
1758 SvREADONLY_on (scalar);
1759
1760 if (SvLEN (scalar))
1761 Safefree (SvPVX (scalar));
1762
1763 SvPVX (scalar) = (char *)addr;
1764 SvCUR_set (scalar, length);
1765 SvLEN_set (scalar, 0);
1766 SvPOK_only (scalar);
1767
1768 XSRETURN_YES;
1769}
1770
1771void
1772munmap (SV *scalar)
1773 CODE:
1774 sv_unmagic (scalar, MMAP_MAGIC);
1775
1776int
1777madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1778 ALIAS:
1779 mprotect = 1
1780 CODE:
1781{
1782 STRLEN svlen;
1783 void *addr = SvPVbyte (scalar, svlen);
1784 size_t len = SvUV (length);
1785
1786 if (offset < 0)
1787 offset += svlen;
1788
1789 if (offset < 0 || offset > svlen)
1790 croak ("offset outside of scalar");
1791
1792 if (!SvOK (length) || len + offset > svlen)
1793 len = svlen - offset;
1794
1795 addr = (void *)(((intptr_t)addr) + offset);
1796 eio_page_align (&addr, &len);
1797
1798 switch (ix)
1799 {
1800 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1801 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1802 }
1803}
1804 OUTPUT:
1805 RETVAL
1806
1807int
1808munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1809 CODE:
1810{
1811 STRLEN svlen;
1812 void *addr = SvPVbyte (scalar, svlen);
1813 size_t len = SvUV (length);
1814
1815 if (offset < 0)
1816 offset += svlen;
1817
1818 if (offset < 0 || offset > svlen)
1819 croak ("offset outside of scalar");
1820
1821 if (!SvOK (length) || len + offset > svlen)
1822 len = svlen - offset;
1823
1824 addr = (void *)(((intptr_t)addr) + offset);
1825 eio_page_align (&addr, &len);
1826#if _POSIX_MEMLOCK_RANGE
1827 RETVAL = munlock (addr, len);
1828#else
1829 RETVAL = EIO_ENOSYS ();
1830#endif
1831}
1832 OUTPUT:
1833 RETVAL
1834
1835int
1836munlockall ()
1837 CODE:
1838#if _POSIX_MEMLOCK
1839 munlockall ();
1840#else
1841 RETVAL = EIO_ENOSYS ();
1842#endif
1843 OUTPUT:
1844 RETVAL
1845
1846int
1847splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1848 CODE:
1849{
1850#if HAVE_LINUX_SPLICE
1851 loff_t off_in_, off_out_;
1852 RETVAL = splice (
1853 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1854 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1855 length, flags
1856 );
1857#else
1858 RETVAL = EIO_ENOSYS ();
1859#endif
1860}
1861 OUTPUT:
1862 RETVAL
1863
1864int
1865tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1866 CODE:
1867#if HAVE_LINUX_SPLICE
1868 RETVAL = tee (rfh, wfh, length, flags);
1869#else
1870 RETVAL = EIO_ENOSYS ();
1871#endif
1872 OUTPUT:
1873 RETVAL
1874
1875void _on_next_submit (SV *cb)
1876 CODE:
1877 SvREFCNT_dec (on_next_submit);
1878 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1879
1711PROTOTYPES: DISABLE 1880PROTOTYPES: DISABLE
1881
1882MODULE = IO::AIO PACKAGE = IO::AIO::WD
1883
1884BOOT:
1885{
1886 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1887 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1888}
1889
1890void
1891DESTROY (SV *self)
1892 CODE:
1893{
1894 aio_wd wd = SvAIO_WD (self);
1895#if HAVE_AT
1896 {
1897 SV *callback = &PL_sv_undef;
1898 dREQ; /* clobbers next_pri :/ */
1899 next_pri = req->pri; /* restore next_pri */
1900 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1901 req->type = EIO_WD_CLOSE;
1902 req->wd = wd;
1903 REQ_SEND;
1904 }
1905#else
1906 eio_wd_close_sync (wd);
1907#endif
1908}
1712 1909
1713MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1910MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714 1911
1715void 1912void
1716cancel (aio_req_ornot req) 1913cancel (aio_req_ornot req)
1717 CODE: 1914 CODE:
1718 req_cancel (req); 1915 eio_cancel (req);
1719 1916
1720void 1917void
1721cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1918cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722 CODE: 1919 PPCODE:
1920{
1921 if (GIMME_V != G_VOID)
1922 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1923
1924 if (items > 1)
1925 {
1926 SV *cb_cv =get_cb (callback);
1927
1723 SvREFCNT_dec (req->callback); 1928 SvREFCNT_dec (req->callback);
1724 req->callback = newSVsv (callback); 1929 req->callback = SvREFCNT_inc (cb_cv);
1930 }
1931}
1725 1932
1726MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1933MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727 1934
1728void 1935void
1729add (aio_req grp, ...) 1936add (aio_req grp, ...)
1730 PPCODE: 1937 PPCODE:
1731{ 1938{
1732 int i; 1939 int i;
1733 aio_req req;
1734 1940
1735 if (grp->int1 == 2) 1941 if (grp->int1 == 2)
1736 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1942 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737 1943
1738 for (i = 1; i < items; ++i ) 1944 for (i = 1; i < items; ++i )
1739 { 1945 {
1946 aio_req req;
1947
1740 if (GIMME_V != G_VOID) 1948 if (GIMME_V != G_VOID)
1741 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1949 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742 1950
1743 req = SvAIO_REQ (ST (i)); 1951 req = SvAIO_REQ (ST (i));
1744 1952
1745 if (req) 1953 if (req)
1746 { 1954 eio_grp_add (grp, req);
1747 ++grp->size;
1748 req->grp = grp;
1749
1750 req->grp_prev = 0;
1751 req->grp_next = grp->grp_first;
1752
1753 if (grp->grp_first)
1754 grp->grp_first->grp_prev = req;
1755
1756 grp->grp_first = req;
1757 }
1758 } 1955 }
1759} 1956}
1760 1957
1761void 1958void
1762cancel_subs (aio_req_ornot req) 1959cancel_subs (aio_req_ornot req)
… …
1771 AV *av; 1968 AV *av;
1772 1969
1773 grp->errorno = errno; 1970 grp->errorno = errno;
1774 1971
1775 av = newAV (); 1972 av = newAV ();
1973 av_extend (av, items - 1);
1776 1974
1777 for (i = 1; i < items; ++i ) 1975 for (i = 1; i < items; ++i )
1778 av_push (av, newSVsv (ST (i))); 1976 av_push (av, newSVsv (ST (i)));
1779 1977
1780 SvREFCNT_dec (grp->sv1); 1978 SvREFCNT_dec (grp->sv1);
… …
1787 grp->errorno = errorno; 1985 grp->errorno = errorno;
1788 1986
1789void 1987void
1790limit (aio_req grp, int limit) 1988limit (aio_req grp, int limit)
1791 CODE: 1989 CODE:
1792 grp->int2 = limit; 1990 eio_grp_limit (grp, limit);
1793 aio_grp_feed (grp);
1794 1991
1795void 1992void
1796feed (aio_req grp, SV *callback=&PL_sv_undef) 1993feed (aio_req grp, SV *callback=&PL_sv_undef)
1797 CODE: 1994 CODE:
1798{ 1995{
1799 SvREFCNT_dec (grp->sv2); 1996 SvREFCNT_dec (grp->sv2);
1800 grp->sv2 = newSVsv (callback); 1997 grp->sv2 = newSVsv (callback);
1998 grp->feed = aio_grp_feed;
1801 1999
1802 if (grp->int2 <= 0) 2000 if (grp->int2 <= 0)
1803 grp->int2 = 2; 2001 grp->int2 = 2;
1804 2002
1805 aio_grp_feed (grp); 2003 eio_grp_limit (grp, grp->int2);
1806} 2004}
1807 2005

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