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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.231 by root, Wed Feb 11 19:32:36 2015 UTC

1#include "xthread.h" 1#include "libeio/xthread.h"
2 2
3#include <errno.h> 3#include <errno.h>
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8 8
9#include "autoconf/config.h" 9#include "schmorp.h"
10 10
11#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h> 12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 14#include <sys/types.h>
17#include <sys/stat.h> 15#include <sys/stat.h>
18#include <limits.h> 16#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 17#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 18#include <sched.h>
23 19
24#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25# if __linux
26# include <sys/sendfile.h>
27# elif __freebsd
28# include <sys/socket.h>
29# include <sys/uio.h> 21# include <sys/mman.h>
30# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. on't complain if this fails for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
46#ifdef _WIN32
47
48 // perl overrides all those nice libc functions
49
50 #undef malloc
51 #undef free
52 #undef open
53 #undef read
54 #undef write
55 #undef send
56 #undef recv
57 #undef stat
58 #undef lstat
59 #undef fstat
60 #undef truncate
61 #undef ftruncate
62 #undef open
63 #undef link
64 #undef close
65 #undef unlink
66 #undef mkdir
67 #undef rmdir
68 #undef rename
69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
79
80 #define EIO_STRUCT_STAT struct _stati64
81 #define EIO_STRUCT_STATI64
82
83#else
84
31# include <sys/socket.h> 85 #include <sys/time.h>
32# elif __solaris /* not yet */
33# include <sys/sendfile.h> 86 #include <sys/select.h>
87 #include <unistd.h>
88 #include <utime.h>
89 #include <signal.h>
90
91 #define EIO_STRUCT_STAT Stat_t
92
93#endif
94
95/*****************************************************************************/
96
97#if __GNUC__ >= 3
98# define expect(expr,value) __builtin_expect ((expr),(value))
99#else
100# define expect(expr,value) (expr)
101#endif
102
103#define expect_false(expr) expect ((expr) != 0, 0)
104#define expect_true(expr) expect ((expr) != 0, 1)
105
106/*****************************************************************************/
107
108typedef SV SV8; /* byte-sv, used for argument-checking */
109typedef int aio_rfd; /* read file desriptor */
110typedef int aio_wfd; /* write file descriptor */
111
112static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
113
114#define EIO_REQ_MEMBERS \
115 SV *callback; \
116 SV *sv1, *sv2; \
117 SV *sv3, *sv4; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/config.h"
124#include "libeio/eio.h"
125
126static int req_invoke (eio_req *req);
127#define EIO_FINISH(req) req_invoke (req)
128static void req_destroy (eio_req *grp);
129#define EIO_DESTROY(req) req_destroy (req)
130
131#include "libeio/eio.c"
132
133#if !HAVE_POSIX_FADVISE
134# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#if !HAVE_POSIX_MADVISE
138# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
139#endif
140
141#ifndef MAP_ANONYMOUS
142# ifdef MAP_ANON
143# define MAP_ANONYMOUS MAP_ANON
34# else 144# else
35# error sendfile support requested but not available 145# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 146# endif
37#endif 147#endif
38 148
39/* number of seconds after which idle threads exit */ 149/* defines all sorts of constants to 0 unless they are already defined */
40#define IDLE_TIMEOUT 10 150#include "def0.h"
41 151
42/* used for struct dirent, AIX doesn't provide it */ 152#ifndef makedev
43#ifndef NAME_MAX 153# define makedev(maj,min) (((maj) << 8) | (min))
44# define NAME_MAX 4096
45#endif 154#endif
155#ifndef major
156# define major(dev) ((dev) >> 8)
157#endif
158#ifndef minor
159# define minor(dev) ((dev) & 0xff)
160#endif
46 161
47/* buffer size for various temporary buffers */ 162#if PAGESIZE <= 0
48#define AIO_BUFSIZE 65536 163# define PAGESIZE sysconf (_SC_PAGESIZE)
164#endif
49 165
50#define dBUF \ 166/*****************************************************************************/
51 char *aio_buf; \
52 LOCK (wrklock); \
53 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
54 UNLOCK (wrklock); \
55 if (!aio_buf) \
56 return -1;
57 167
58typedef SV SV8; /* byte-sv, used for argument-checking */ 168static void
59 169fiemap (eio_req *req)
60enum {
61 REQ_QUIT,
62 REQ_OPEN, REQ_CLOSE,
63 REQ_READ, REQ_WRITE, REQ_READAHEAD,
64 REQ_SENDFILE,
65 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66 REQ_FSYNC, REQ_FDATASYNC,
67 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68 REQ_MKNOD, REQ_READDIR,
69 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70 REQ_GROUP, REQ_NOP,
71 REQ_BUSY,
72};
73
74#define AIO_REQ_KLASS "IO::AIO::REQ"
75#define AIO_GRP_KLASS "IO::AIO::GRP"
76
77typedef struct aio_cb
78{ 170{
79 struct aio_cb *volatile next; 171 req->result = -1;
80 172
81 SV *callback, *fh; 173#if HAVE_FIEMAP
82 SV *sv1, *sv2; 174 /* assume some c99 */
83 void *ptr1, *ptr2; 175 struct fiemap *fiemap = 0;
84 off_t offs; 176 size_t end_offset;
85 size_t size; 177 int count = req->int3;
86 ssize_t result;
87 178
88 STRLEN stroffset; 179 req->flags |= EIO_FLAG_PTR1_FREE;
89 int type;
90 int int1, int2;
91 int errorno;
92 mode_t mode; /* open */
93 180
94 unsigned char flags; 181 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
95 unsigned char pri; 182 /* increase in 3.5kb steps */
183 if (count < 0)
184 count = 8;
96 185
97 SV *self; /* the perl counterpart of this request, if any */ 186 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
98 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 187 errno = ENOMEM;
99} aio_cb; 188 if (!fiemap)
100
101enum {
102 FLAG_CANCELLED = 0x01, /* request was cancelled */
103 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105};
106
107typedef aio_cb *aio_req;
108typedef aio_cb *aio_req_ornot;
109
110enum {
111 PRI_MIN = -4,
112 PRI_MAX = 4,
113
114 DEFAULT_PRI = 0,
115 PRI_BIAS = -PRI_MIN,
116 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117};
118
119#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121static unsigned int max_poll_time = 0;
122static unsigned int max_poll_reqs = 0;
123
124/* calculcate time difference in ~1/AIO_TICKS of a second */
125static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126{
127 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
129}
130
131static thread_t main_tid;
132static int main_sig;
133static int block_sig_level;
134
135void block_sig ()
136{
137 sigset_t ss;
138
139 if (block_sig_level++)
140 return; 189 return;
141 190
142 if (!main_sig) 191 req->ptr1 = fiemap;
192
193 fiemap->fm_start = req->offs;
194 fiemap->fm_length = req->size;
195 fiemap->fm_flags = req->int2;
196 fiemap->fm_extent_count = count;
197
198 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
143 return; 199 return;
144 200
145 sigemptyset (&ss); 201 if (req->int3 >= 0 /* not autosizing */
146 sigaddset (&ss, main_sig); 202 || !fiemap->fm_mapped_extents /* no more extents */
147 pthread_sigmask (SIG_BLOCK, &ss, 0); 203 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
148} 204 goto done;
149 205
150void unblock_sig () 206 /* else we have to loop -
151{ 207 * it would be tempting (actually I tried that first) to just query the
152 sigset_t ss; 208 * number of extents needed, but linux often feels like not returning all
209 * extents, without telling us it left any out. this complicates
210 * this quite a bit.
211 */
153 212
154 if (--block_sig_level) 213 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
155 return;
156 214
157 if (!main_sig) 215 for (;;)
158 return;
159
160 sigemptyset (&ss);
161 sigaddset (&ss, main_sig);
162 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163}
164
165static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167static unsigned int started, idle, wanted;
168
169/* worker threads management */
170static mutex_t wrklock = MUTEX_INIT;
171
172typedef struct worker {
173 /* locked by wrklock */
174 struct worker *prev, *next;
175
176 thread_t tid;
177
178 /* locked by reslock, reqlock or wrklock */
179 aio_req req; /* currently processed request */
180 void *dbuf;
181 DIR *dirp;
182} worker;
183
184static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186static void worker_clear (worker *wrk)
187{
188 if (wrk->dirp)
189 { 216 {
190 closedir (wrk->dirp); 217 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
191 wrk->dirp = 0; 218 char scratch[3072];
192 } 219 struct fiemap *incmap = (struct fiemap *)scratch;
193 220
194 if (wrk->dbuf) 221 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
195 { 222 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
196 free (wrk->dbuf); 223 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
197 wrk->dbuf = 0; 224 incmap->fm_flags = fiemap->fm_flags;
198 } 225 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
199}
200 226
201static void worker_free (worker *wrk) 227 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
202{
203 wrk->next->prev = wrk->prev;
204 wrk->prev->next = wrk->next;
205
206 free (wrk);
207}
208
209static volatile unsigned int nreqs, nready, npending;
210static volatile unsigned int max_idle = 4;
211static volatile unsigned int max_outstanding = 0xffffffff;
212static int respipe [2];
213
214static mutex_t reslock = MUTEX_INIT;
215static mutex_t reqlock = MUTEX_INIT;
216static cond_t reqwait = COND_INIT;
217
218#if WORDACCESS_UNSAFE
219
220static unsigned int get_nready ()
221{
222 unsigned int retval;
223
224 LOCK (reqlock);
225 retval = nready;
226 UNLOCK (reqlock);
227
228 return retval;
229}
230
231static unsigned int get_npending ()
232{
233 unsigned int retval;
234
235 LOCK (reslock);
236 retval = npending;
237 UNLOCK (reslock);
238
239 return retval;
240}
241
242static unsigned int get_nthreads ()
243{
244 unsigned int retval;
245
246 LOCK (wrklock);
247 retval = started;
248 UNLOCK (wrklock);
249
250 return retval;
251}
252
253#else
254
255# define get_nready() nready
256# define get_npending() npending
257# define get_nthreads() started
258
259#endif
260
261/*
262 * a somewhat faster data structure might be nice, but
263 * with 8 priorities this actually needs <20 insns
264 * per shift, the most expensive operation.
265 */
266typedef struct {
267 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268 int size;
269} reqq;
270
271static reqq req_queue;
272static reqq res_queue;
273
274int reqq_push (reqq *q, aio_req req)
275{
276 int pri = req->pri;
277 req->next = 0;
278
279 if (q->qe[pri])
280 {
281 q->qe[pri]->next = req;
282 q->qe[pri] = req;
283 }
284 else
285 q->qe[pri] = q->qs[pri] = req;
286
287 return q->size++;
288}
289
290aio_req reqq_shift (reqq *q)
291{
292 int pri;
293
294 if (!q->size)
295 return 0; 228 return;
296 229
297 --q->size; 230 if (!incmap->fm_mapped_extents)
231 goto done;
298 232
299 for (pri = NUM_PRI; pri--; ) 233 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
300 { 234 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
301 aio_req req = q->qs[pri]; 235 errno = ENOMEM;
302
303 if (req) 236 if (!fiemap)
237 return;
238
239 req->ptr1 = fiemap;
240
241 for (count = 0; count < incmap->fm_mapped_extents; ++count)
304 { 242 {
305 if (!(q->qs[pri] = req->next)) 243 struct fiemap_extent *e = incmap->fm_extents + count;
306 q->qe[pri] = 0;
307 244
308 return req; 245 if (e->fe_logical + e->fe_length >= end_offset)
246 goto done;
247
248 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
249
250 if (e->fe_flags & FIEMAP_EXTENT_LAST)
251 goto done;
252
309 } 253 }
310 } 254 }
311 255
312 abort (); 256done:
313} 257 req->result = 0;
314 258
315static int poll_cb (); 259#else
316static int req_invoke (aio_req req); 260 errno = ENOSYS;
261#endif
262}
263
264/*****************************************************************************/
265
266enum {
267 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
268};
269
270typedef eio_req *aio_req;
271typedef eio_req *aio_req_ornot;
272typedef eio_wd aio_wd;
273
274static SV *on_next_submit;
275static int next_pri = EIO_PRI_DEFAULT;
276static int max_outstanding;
277
278static s_epipe respipe;
279
317static void req_free (aio_req req); 280static void req_destroy (aio_req req);
318static void req_cancel (aio_req req); 281static void req_cancel (aio_req req);
319 282
283static void
284want_poll (void)
285{
286 /* write a dummy byte to the pipe so fh becomes ready */
287 s_epipe_signal (&respipe);
288}
289
290static void
291done_poll (void)
292{
293 /* read any signals sent by the worker threads */
294 s_epipe_drain (&respipe);
295}
296
320/* must be called at most once */ 297/* must be called at most once */
321static SV *req_sv (aio_req req, const char *klass) 298static SV *
299req_sv (aio_req req, HV *stash)
322{ 300{
323 if (!req->self) 301 if (!req->self)
324 { 302 {
325 req->self = (SV *)newHV (); 303 req->self = (SV *)newHV ();
326 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327 } 305 }
328 306
329 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 307 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330} 308}
331 309
332static aio_req SvAIO_REQ (SV *sv) 310static SV *
311newSVaio_wd (aio_wd wd)
312{
313 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
314}
315
316static aio_req
317SvAIO_REQ (SV *sv)
333{ 318{
334 MAGIC *mg; 319 MAGIC *mg;
335 320
336 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 321 if (!SvROK (sv)
322 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
323 || (SvSTASH (SvRV (sv)) != aio_grp_stash
324 && SvSTASH (SvRV (sv)) != aio_req_stash
325 && !sv_derived_from (sv, "IO::AIO::REQ")))
337 croak ("object of class " AIO_REQ_KLASS " expected"); 326 croak ("object of class IO::AIO::REQ expected");
338 327
339 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 328 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340 329
341 return mg ? (aio_req)mg->mg_ptr : 0; 330 return mg ? (aio_req)mg->mg_ptr : 0;
342} 331}
343 332
333static aio_wd
334SvAIO_WD (SV *sv)
335{
336 if (!SvROK (sv)
337 || SvTYPE (SvRV (sv)) != SVt_PVMG
338 || SvSTASH (SvRV (sv)) != aio_wd_stash)
339 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
340
341 return (aio_wd)(long)SvIVX (SvRV (sv));
342}
343
344static void
344static void aio_grp_feed (aio_req grp) 345aio_grp_feed (aio_req grp)
345{ 346{
346 block_sig (); 347 if (grp->sv2 && SvOK (grp->sv2))
347
348 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349 { 348 {
350 int old_len = grp->size;
351
352 if (grp->sv2 && SvOK (grp->sv2))
353 {
354 dSP; 349 dSP;
355 350
356 ENTER; 351 ENTER;
357 SAVETMPS; 352 SAVETMPS;
358 PUSHMARK (SP); 353 PUSHMARK (SP);
359 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 354 XPUSHs (req_sv (grp, aio_grp_stash));
360 PUTBACK; 355 PUTBACK;
361 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 356 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362 SPAGAIN; 357 SPAGAIN;
363 FREETMPS; 358 FREETMPS;
364 LEAVE; 359 LEAVE;
365 }
366
367 /* stop if no progress has been made */
368 if (old_len == grp->size)
369 {
370 SvREFCNT_dec (grp->sv2);
371 grp->sv2 = 0;
372 break;
373 }
374 } 360 }
375
376 unblock_sig ();
377} 361}
378 362
379static void aio_grp_dec (aio_req grp) 363static void
364req_submit (eio_req *req)
380{ 365{
381 --grp->size; 366 eio_submit (req);
382 367
383 /* call feeder, if applicable */ 368 if (expect_false (on_next_submit))
384 aio_grp_feed (grp);
385
386 /* finish, if done */
387 if (!grp->size && grp->int1)
388 { 369 {
389 block_sig (); 370 dSP;
371 SV *cb = sv_2mortal (on_next_submit);
390 372
391 if (!req_invoke (grp)) 373 on_next_submit = 0;
392 {
393 req_free (grp);
394 unblock_sig ();
395 croak (0);
396 }
397 374
398 req_free (grp); 375 PUSHMARK (SP);
399 unblock_sig (); 376 PUTBACK;
377 call_sv (cb, G_DISCARD | G_EVAL);
400 } 378 }
401} 379}
402 380
381static int
403static int req_invoke (aio_req req) 382req_invoke (eio_req *req)
404{ 383{
405 dSP;
406
407 if (req->flags & FLAG_SV1_RO_OFF) 384 if (req->flags & FLAG_SV2_RO_OFF)
408 SvREADONLY_off (req->sv1); 385 SvREADONLY_off (req->sv2);
409 386
410 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 387 if (!EIO_CANCELLED (req) && req->callback)
411 { 388 {
389 dSP;
390 static SV *sv_result_cache; /* caches the result integer SV */
391 SV *sv_result;
392
412 ENTER; 393 ENTER;
413 SAVETMPS; 394 SAVETMPS;
414 PUSHMARK (SP); 395 PUSHMARK (SP);
415 EXTEND (SP, 1); 396 EXTEND (SP, 1);
416 397
398 /* do not recreate the result IV from scratch each time */
399 if (expect_true (sv_result_cache))
400 {
401 sv_result = sv_result_cache; sv_result_cache = 0;
402 SvIV_set (sv_result, req->result);
403 SvIOK_only (sv_result);
404 }
405 else
406 {
407 sv_result = newSViv (req->result);
408 SvREADONLY_on (sv_result);
409 }
410
417 switch (req->type) 411 switch (req->type)
418 { 412 {
413 case EIO_WD_OPEN:
414 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
415 break;
416
419 case REQ_READDIR: 417 case EIO_READDIR:
420 { 418 {
421 SV *rv = &PL_sv_undef; 419 SV *rv = &PL_sv_undef;
422 420
423 if (req->result >= 0) 421 if (req->result >= 0)
424 { 422 {
425 int i; 423 int i;
426 char *buf = req->ptr2; 424 char *names = (char *)req->ptr2;
425 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427 AV *av = newAV (); 426 AV *av = newAV ();
428 427
429 av_extend (av, req->result - 1); 428 av_extend (av, req->result - 1);
430 429
431 for (i = 0; i < req->result; ++i) 430 for (i = 0; i < req->result; ++i)
432 { 431 {
433 SV *sv = newSVpv (buf, 0); 432 if (req->int1 & EIO_READDIR_DENTS)
433 {
434 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434 435
436 if (req->int1 & EIO_READDIR_CUSTOM2)
437 {
438 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
439 AV *avent = newAV ();
440
441 av_extend (avent, 2);
442
443 if (!sv_type [ent->type])
444 {
445 sv_type [ent->type] = newSViv (ent->type);
446 SvREADONLY_on (sv_type [ent->type]);
447 }
448
449 av_store (avent, 0, namesv);
450 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
451 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
452
453 av_store (av, i, newRV_noinc ((SV *)avent));
454 }
455 else
435 av_store (av, i, sv); 456 av_store (av, i, namesv);
457
458 ++ent;
459 }
460 else
461 {
462 SV *name = newSVpv (names, 0);
463 av_store (av, i, name);
436 buf += SvCUR (sv) + 1; 464 names += SvCUR (name) + 1;
465 }
437 } 466 }
438 467
439 rv = sv_2mortal (newRV_noinc ((SV *)av)); 468 rv = sv_2mortal (newRV_noinc ((SV *)av));
440 } 469 }
441 470
442 PUSHs (rv); 471 PUSHs (rv);
472
473 if (req->int1 & EIO_READDIR_CUSTOM1)
474 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443 } 475 }
444 break; 476 break;
445 477
446 case REQ_OPEN: 478 case EIO_OPEN:
447 { 479 {
448 /* convert fd to fh */ 480 /* convert fd to fh */
449 SV *fh; 481 SV *fh = &PL_sv_undef;
450 482
451 PUSHs (sv_2mortal (newSViv (req->result))); 483 if (req->result >= 0)
452 PUTBACK; 484 {
453 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 485 GV *gv = (GV *)sv_newmortal ();
454 SPAGAIN; 486 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
487 char sym [64];
488 int symlen;
489
490 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
491 gv_init (gv, aio_stash, sym, symlen, 0);
455 492
456 fh = POPs; 493 symlen = snprintf (
457 PUSHMARK (SP); 494 sym,
495 sizeof (sym),
496 "%s&=%d",
497 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
498 (int)req->result
499 );
500
501 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
502 fh = (SV *)gv;
503 }
504
458 XPUSHs (fh); 505 PUSHs (fh);
459 } 506 }
460 break; 507 break;
461 508
509 case EIO_STATVFS:
510 case EIO_FSTATVFS:
511 {
512 SV *rv = &PL_sv_undef;
513
514#ifndef _WIN32
515 if (req->result >= 0)
516 {
517 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
518 HV *hv = newHV ();
519 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
520 * chooses to make it a struct.
521 */
522 unsigned long fsid = 0;
523 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
524
525 rv = sv_2mortal (newRV_noinc ((SV *)hv));
526
527 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
528 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
529 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
530 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
531 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
532 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
533 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
534 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
535 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
536 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
537 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
538 }
539#endif
540
541 PUSHs (rv);
542 }
543
544 break;
545
462 case REQ_GROUP: 546 case EIO_GROUP:
463 req->int1 = 2; /* mark group as finished */ 547 req->int1 = 2; /* mark group as finished */
464 548
465 if (req->sv1) 549 if (req->sv1)
466 { 550 {
467 int i; 551 int i;
… …
471 for (i = 0; i <= AvFILL (av); ++i) 555 for (i = 0; i <= AvFILL (av); ++i)
472 PUSHs (*av_fetch (av, i, 0)); 556 PUSHs (*av_fetch (av, i, 0));
473 } 557 }
474 break; 558 break;
475 559
476 case REQ_NOP: 560 case EIO_NOP:
477 case REQ_BUSY: 561 case EIO_BUSY:
478 break; 562 break;
479 563
480 case REQ_READLINK: 564 case EIO_READLINK:
565 case EIO_REALPATH:
481 if (req->result > 0) 566 if (req->result > 0)
567 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
568 break;
569
570 case EIO_STAT:
571 case EIO_LSTAT:
572 case EIO_FSTAT:
573 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
574
575 if (!(PL_laststatval = req->result))
576 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
577 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
578
579 PUSHs (sv_result);
580 break;
581
582 case EIO_SEEK:
583 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
584 break;
585
586 case EIO_READ:
587 {
588 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
589 *SvEND (req->sv2) = 0;
590 SvPOK_only (req->sv2);
591 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result);
593 }
594 break;
595
596 case EIO_CUSTOM:
597 if (req->feed == fiemap)
482 { 598 {
483 SvCUR_set (req->sv1, req->result); 599#if HAVE_FIEMAP
484 *SvEND (req->sv1) = 0;
485 PUSHs (req->sv1); 600 if (!req->result)
601 {
602 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
603
604 if (fiemap->fm_extent_count)
605 {
606 AV *av = newAV ();
607 int i;
608
609 while (fiemap->fm_mapped_extents)
610 {
611 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
612 AV *ext_av = newAV ();
613
614 av_store (ext_av, 3, newSVuv (extent->fe_flags));
615 av_store (ext_av, 2, newSVval64 (extent->fe_length));
616 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
617 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
618
619 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
620 }
621
622 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
623 }
624 else
625 {
626 SvIV_set (sv_result, fiemap->fm_mapped_extents);
627 PUSHs (sv_result);
628 }
629 }
630#endif
486 } 631 }
632 else
633 PUSHs (sv_result);
487 break; 634 break;
488 635
489 case REQ_STAT: 636 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
490 case REQ_LSTAT: 637 if (req->result > 0)
491 case REQ_FSTAT: 638 SvIV_set (sv_result, 0);
492 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 639 /* FALLTHROUGH */
493 PL_laststatval = req->result;
494 PL_statcache = *(Stat_t *)(req->ptr2);
495 PUSHs (sv_2mortal (newSViv (req->result)));
496 break;
497
498 case REQ_READ:
499 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
500 *SvEND (req->sv1) = 0;
501 PUSHs (sv_2mortal (newSViv (req->result)));
502 break;
503 640
504 default: 641 default:
505 PUSHs (sv_2mortal (newSViv (req->result))); 642 PUSHs (sv_result);
506 break; 643 break;
507 } 644 }
508 645
509 errno = req->errorno; 646 errno = req->errorno;
510 647
511 PUTBACK; 648 PUTBACK;
512 call_sv (req->callback, G_VOID | G_EVAL); 649 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513 SPAGAIN; 650 SPAGAIN;
651
652 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
653 SvREFCNT_dec (sv_result);
654 else
655 sv_result_cache = sv_result;
514 656
515 FREETMPS; 657 FREETMPS;
516 LEAVE; 658 LEAVE;
659
660 PUTBACK;
517 } 661 }
518 662
519 if (req->grp)
520 {
521 aio_req grp = req->grp;
522
523 /* unlink request */
524 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527 if (grp->grp_first == req)
528 grp->grp_first = req->grp_next;
529
530 aio_grp_dec (grp);
531 }
532
533 return !SvTRUE (ERRSV); 663 return !!SvTRUE (ERRSV);
534} 664}
535 665
536static void req_free (aio_req req) 666static void
667req_destroy (aio_req req)
537{ 668{
538 if (req->self) 669 if (req->self)
539 { 670 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 671 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 672 SvREFCNT_dec (req->self);
542 } 673 }
543 674
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 675 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 676 SvREFCNT_dec (req->sv2);
677 SvREFCNT_dec (req->sv3);
678 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 679 SvREFCNT_dec (req->callback);
548 680
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 681 free (req);
553} 682}
554 683
684static void
555static void req_cancel_subs (aio_req grp) 685req_cancel_subs (aio_req grp)
556{ 686{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 687 if (grp->type != EIO_GROUP)
560 return; 688 return;
561 689
562 SvREFCNT_dec (grp->sv2); 690 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 691 grp->sv2 = 0;
564 692
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 693 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 694}
568 695
569static void req_cancel (aio_req req) 696static void ecb_cold
697create_respipe (void)
570{ 698{
571 req->flags |= FLAG_CANCELLED; 699 if (s_epipe_renew (&respipe))
572 700 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 701}
575 702
576static void *aio_proc(void *arg); 703static void
577 704poll_wait (void)
578static void start_thread (void)
579{ 705{
580 worker *wrk = calloc (1, sizeof (worker));
581
582 if (!wrk)
583 croak ("unable to allocate worker thread data");
584
585 LOCK (wrklock);
586
587 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588 {
589 wrk->prev = &wrk_first;
590 wrk->next = wrk_first.next;
591 wrk_first.next->prev = wrk;
592 wrk_first.next = wrk;
593 ++started;
594 }
595 else
596 free (wrk);
597
598 UNLOCK (wrklock);
599}
600
601static void maybe_start_thread ()
602{
603 if (get_nthreads () >= wanted)
604 return;
605
606 /* todo: maybe use idle here, but might be less exact */
607 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608 return;
609
610 start_thread ();
611}
612
613static void req_send (aio_req req)
614{
615 block_sig ();
616
617 ++nreqs;
618
619 LOCK (reqlock);
620 ++nready;
621 reqq_push (&req_queue, req);
622 COND_SIGNAL (reqwait);
623 UNLOCK (reqlock);
624
625 unblock_sig ();
626
627 maybe_start_thread ();
628}
629
630static void end_thread (void)
631{
632 aio_req req;
633
634 Newz (0, req, 1, aio_cb);
635
636 req->type = REQ_QUIT;
637 req->pri = PRI_MAX + PRI_BIAS;
638
639 LOCK (reqlock);
640 reqq_push (&req_queue, req);
641 COND_SIGNAL (reqwait);
642 UNLOCK (reqlock);
643
644 LOCK (wrklock);
645 --started;
646 UNLOCK (wrklock);
647}
648
649static void set_max_idle (int nthreads)
650{
651 if (WORDACCESS_UNSAFE) LOCK (reqlock);
652 max_idle = nthreads <= 0 ? 1 : nthreads;
653 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654}
655
656static void min_parallel (int nthreads)
657{
658 if (wanted < nthreads)
659 wanted = nthreads;
660}
661
662static void max_parallel (int nthreads)
663{
664 if (wanted > nthreads)
665 wanted = nthreads;
666
667 while (started > wanted)
668 end_thread ();
669}
670
671static void poll_wait ()
672{
673 fd_set rfd;
674
675 while (nreqs) 706 while (eio_nreqs ())
676 { 707 {
677 int size; 708 int size;
678 if (WORDACCESS_UNSAFE) LOCK (reslock); 709
710 X_LOCK (reslock);
679 size = res_queue.size; 711 size = res_queue.size;
680 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 712 X_UNLOCK (reslock);
681 713
682 if (size) 714 if (size)
683 return; 715 return;
684 716
685 maybe_start_thread (); 717 etp_maybe_start_thread ();
686 718
687 FD_ZERO(&rfd); 719 s_epipe_wait (&respipe);
688 FD_SET(respipe [0], &rfd);
689
690 select (respipe [0] + 1, &rfd, 0, 0, 0);
691 } 720 }
692} 721}
693 722
694static int poll_cb () 723static int
724poll_cb (void)
695{ 725{
696 dSP;
697 int count = 0;
698 int maxreqs = max_poll_reqs;
699 int do_croak = 0;
700 struct timeval tv_start, tv_now;
701 aio_req req;
702
703 if (max_poll_time)
704 gettimeofday (&tv_start, 0);
705
706 block_sig ();
707
708 for (;;) 726 for (;;)
709 { 727 {
710 for (;;) 728 int res = eio_poll ();
729
730 if (res > 0)
731 croak (0);
732
733 if (!max_outstanding || max_outstanding > eio_nreqs ())
734 return res;
735
736 poll_wait ();
737 }
738}
739
740static void ecb_cold
741reinit (void)
742{
743 create_respipe ();
744
745 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library");
747}
748
749/*****************************************************************************/
750
751#if !_POSIX_MAPPED_FILES
752# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753# define munmap(addr,length) EIO_ENOSYS ()
754#endif
755
756#if !_POSIX_MEMORY_PROTECTION
757# define mprotect(addr,len,prot) EIO_ENOSYS ()
758# define PROT_NONE 0
759# define PROT_WRITE 0
760# define MAP_PRIVATE 0
761# define MAP_SHARED 0
762# define MAP_FIXED 0
763#endif
764
765#define MMAP_MAGIC PERL_MAGIC_ext
766
767static int ecb_cold
768mmap_free (pTHX_ SV *sv, MAGIC *mg)
769{
770 int old_errno = errno;
771 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
772 errno = old_errno;
773
774 mg->mg_obj = 0; /* just in case */
775
776 SvREADONLY_off (sv);
777
778 if (SvPVX (sv) != mg->mg_ptr)
779 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
780
781 SvCUR_set (sv, 0);
782 SvPVX (sv) = 0;
783 SvOK_off (sv);
784
785 return 0;
786}
787
788static MGVTBL mmap_vtbl = {
789 0, 0, 0, 0, mmap_free
790};
791
792/*****************************************************************************/
793
794static SV *
795get_cb (SV *cb_sv)
796{
797 SvGETMAGIC (cb_sv);
798 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
799}
800
801static aio_req ecb_noinline
802dreq (SV *callback)
803{
804 SV *cb_cv;
805 aio_req req;
806 int req_pri = next_pri;
807 next_pri = EIO_PRI_DEFAULT;
808
809 cb_cv = get_cb (callback);
810
811 req = calloc (sizeof (*req), 1);
812 if (!req)
813 croak ("out of memory during eio_req allocation");
814
815 req->callback = SvREFCNT_inc (cb_cv);
816 req->pri = req_pri;
817
818 return req;
819}
820
821#define dREQ \
822 aio_req req = dreq (callback); \
823
824#define REQ_SEND \
825 PUTBACK; \
826 req_submit (req); \
827 SPAGAIN; \
828 \
829 if (GIMME_V != G_VOID) \
830 XPUSHs (req_sv (req, aio_req_stash));
831
832ecb_inline void
833req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
834{
835 if (expect_false (SvROK (path)))
836 {
837 SV *rv = SvRV (path);
838 SV *wdob;
839
840 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
711 { 841 {
712 maybe_start_thread (); 842 path = AvARRAY (rv)[1];
843 wdob = AvARRAY (rv)[0];
713 844
714 LOCK (reslock); 845 if (SvOK (wdob))
715 req = reqq_shift (&res_queue);
716
717 if (req)
718 { 846 {
719 --npending; 847 *wd = SvAIO_WD (wdob);
720 848 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
721 if (!res_queue.size)
722 {
723 /* read any signals sent by the worker threads */
724 char buf [4];
725 while (read (respipe [0], buf, 4) == 4)
726 ;
727 }
728 }
729
730 UNLOCK (reslock);
731
732 if (!req)
733 break;
734
735 --nreqs;
736
737 if (req->type == REQ_GROUP && req->size)
738 {
739 req->int1 = 1; /* mark request as delayed */
740 continue;
741 } 849 }
742 else 850 else
743 { 851 *wd = EIO_INVALID_WD;
744 if (!req_invoke (req))
745 {
746 req_free (req);
747 unblock_sig ();
748 croak (0);
749 }
750
751 count++;
752 }
753
754 req_free (req);
755
756 if (maxreqs && !--maxreqs)
757 break;
758
759 if (max_poll_time)
760 {
761 gettimeofday (&tv_now, 0);
762
763 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764 break;
765 }
766 } 852 }
853 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
854 {
855 *wd = (aio_wd)(long)SvIVX (rv);
856 *wdsv = SvREFCNT_inc_NN (rv);
857 *ptr = ".";
858 return; /* path set to "." */
859 }
860 else
861 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
862 }
767 863
768 if (nreqs <= max_outstanding) 864 *pathsv = newSVsv (path);
865 *ptr = SvPVbyte_nolen (*pathsv);
866}
867
868static void ecb_noinline
869req_set_path1 (aio_req req, SV *path)
870{
871 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
872}
873
874static void ecb_noinline
875req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
876{
877 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
878
879 switch (SvTYPE (rv))
880 {
881 case SVt_PVIO:
882 case SVt_PVLV:
883 case SVt_PVGV:
884 req->type = type_fh;
885 req->sv1 = newSVsv (fh_or_path);
886 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
769 break; 887 break;
770 888
771 poll_wait (); 889 default:
772 890 req->type = type_path;
773 ++maxreqs; 891 req_set_path1 (req, fh_or_path);
892 break;
774 } 893 }
775
776 unblock_sig ();
777 return count;
778} 894}
779 895
780static void create_pipe () 896XS(boot_IO__AIO) ecb_cold;
781{
782 if (pipe (respipe))
783 croak ("unable to initialize result pipe");
784 897
785 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
786 croak ("cannot set result pipe to nonblocking mode");
787
788 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789 croak ("cannot set result pipe to nonblocking mode");
790}
791
792/*****************************************************************************/
793/* work around various missing functions */
794
795#if !HAVE_PREADWRITE
796# define pread aio_pread
797# define pwrite aio_pwrite
798
799/*
800 * make our pread/pwrite safe against themselves, but not against
801 * normal read/write by using a mutex. slows down execution a lot,
802 * but that's your problem, not mine.
803 */
804static mutex_t preadwritelock = MUTEX_INIT;
805
806static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807{
808 ssize_t res;
809 off_t ooffset;
810
811 LOCK (preadwritelock);
812 ooffset = lseek (fd, 0, SEEK_CUR);
813 lseek (fd, offset, SEEK_SET);
814 res = read (fd, buf, count);
815 lseek (fd, ooffset, SEEK_SET);
816 UNLOCK (preadwritelock);
817
818 return res;
819}
820
821static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822{
823 ssize_t res;
824 off_t ooffset;
825
826 LOCK (preadwritelock);
827 ooffset = lseek (fd, 0, SEEK_CUR);
828 lseek (fd, offset, SEEK_SET);
829 res = write (fd, buf, count);
830 lseek (fd, offset, SEEK_SET);
831 UNLOCK (preadwritelock);
832
833 return res;
834}
835#endif
836
837#if !HAVE_FDATASYNC
838# define fdatasync fsync
839#endif
840
841#if !HAVE_READAHEAD
842# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845{
846 dBUF;
847
848 while (count > 0)
849 {
850 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852 pread (fd, aio_buf, len, offset);
853 offset += len;
854 count -= len;
855 }
856
857 errno = 0;
858}
859
860#endif
861
862#if !HAVE_READDIR_R
863# define readdir_r aio_readdir_r
864
865static mutex_t readdirlock = MUTEX_INIT;
866
867static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868{
869 struct dirent *e;
870 int errorno;
871
872 LOCK (readdirlock);
873
874 e = readdir (dirp);
875 errorno = errno;
876
877 if (e)
878 {
879 *res = ent;
880 strcpy (ent->d_name, e->d_name);
881 }
882 else
883 *res = 0;
884
885 UNLOCK (readdirlock);
886
887 errno = errorno;
888 return e ? 0 : -1;
889}
890#endif
891
892/* sendfile always needs emulation */
893static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894{
895 ssize_t res;
896
897 if (!count)
898 return 0;
899
900#if HAVE_SENDFILE
901# if __linux
902 res = sendfile (ofd, ifd, &offset, count);
903
904# elif __freebsd
905 /*
906 * Of course, the freebsd sendfile is a dire hack with no thoughts
907 * wasted on making it similar to other I/O functions.
908 */
909 {
910 off_t sbytes;
911 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913 if (res < 0 && sbytes)
914 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915 res = sbytes;
916 }
917
918# elif __hpux
919 res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921# elif __solaris
922 {
923 struct sendfilevec vec;
924 size_t sbytes;
925
926 vec.sfv_fd = ifd;
927 vec.sfv_flag = 0;
928 vec.sfv_off = offset;
929 vec.sfv_len = count;
930
931 res = sendfilev (ofd, &vec, 1, &sbytes);
932
933 if (res < 0 && sbytes)
934 res = sbytes;
935 }
936
937# endif
938#else
939 res = -1;
940 errno = ENOSYS;
941#endif
942
943 if (res < 0
944 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
945#if __solaris
946 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
947#endif
948 )
949 )
950 {
951 /* emulate sendfile. this is a major pain in the ass */
952 dBUF;
953
954 res = 0;
955
956 while (count)
957 {
958 ssize_t cnt;
959
960 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
961
962 if (cnt <= 0)
963 {
964 if (cnt && !res) res = -1;
965 break;
966 }
967
968 cnt = write (ofd, aio_buf, cnt);
969
970 if (cnt <= 0)
971 {
972 if (cnt && !res) res = -1;
973 break;
974 }
975
976 offset += cnt;
977 res += cnt;
978 count -= cnt;
979 }
980 }
981
982 return res;
983}
984
985/* read a full directory */
986static void scandir_ (aio_req req, worker *self)
987{
988 DIR *dirp;
989 union
990 {
991 struct dirent d;
992 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993 } *u;
994 struct dirent *entp;
995 char *name, *names;
996 int memlen = 4096;
997 int memofs = 0;
998 int res = 0;
999 int errorno;
1000
1001 LOCK (wrklock);
1002 self->dirp = dirp = opendir (req->ptr1);
1003 self->dbuf = u = malloc (sizeof (*u));
1004 req->flags |= FLAG_PTR2_FREE;
1005 req->ptr2 = names = malloc (memlen);
1006 UNLOCK (wrklock);
1007
1008 if (dirp && u && names)
1009 for (;;)
1010 {
1011 errno = 0;
1012 readdir_r (dirp, &u->d, &entp);
1013
1014 if (!entp)
1015 break;
1016
1017 name = entp->d_name;
1018
1019 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020 {
1021 int len = strlen (name) + 1;
1022
1023 res++;
1024
1025 while (memofs + len > memlen)
1026 {
1027 memlen *= 2;
1028 LOCK (wrklock);
1029 req->ptr2 = names = realloc (names, memlen);
1030 UNLOCK (wrklock);
1031
1032 if (!names)
1033 break;
1034 }
1035
1036 memcpy (names + memofs, name, len);
1037 memofs += len;
1038 }
1039 }
1040
1041 if (errno)
1042 res = -1;
1043
1044 req->result = res;
1045}
1046
1047/*****************************************************************************/
1048
1049static void *aio_proc (void *thr_arg)
1050{
1051 aio_req req;
1052 struct timespec ts;
1053 worker *self = (worker *)thr_arg;
1054
1055 /* try to distribute timeouts somewhat evenly */
1056 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057 * (1000000000UL / 1024UL);
1058
1059 for (;;)
1060 {
1061 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063 LOCK (reqlock);
1064
1065 for (;;)
1066 {
1067 self->req = req = reqq_shift (&req_queue);
1068
1069 if (req)
1070 break;
1071
1072 ++idle;
1073
1074 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075 == ETIMEDOUT)
1076 {
1077 if (idle > max_idle)
1078 {
1079 --idle;
1080 UNLOCK (reqlock);
1081 LOCK (wrklock);
1082 --started;
1083 UNLOCK (wrklock);
1084 goto quit;
1085 }
1086
1087 /* we are allowed to idle, so do so without any timeout */
1088 COND_WAIT (reqwait, reqlock);
1089 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090 }
1091
1092 --idle;
1093 }
1094
1095 --nready;
1096
1097 UNLOCK (reqlock);
1098
1099 errno = 0; /* strictly unnecessary */
1100
1101 if (!(req->flags & FLAG_CANCELLED))
1102 switch (req->type)
1103 {
1104 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115 case REQ_CLOSE: req->result = close (req->int1); break;
1116 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126 case REQ_FSYNC: req->result = fsync (req->int1); break;
1127 case REQ_READDIR: scandir_ (req, self); break;
1128
1129 case REQ_BUSY:
1130 {
1131 struct timeval tv;
1132
1133 tv.tv_sec = req->int1;
1134 tv.tv_usec = req->int2;
1135
1136 req->result = select (0, 0, 0, 0, &tv);
1137 }
1138
1139 case REQ_GROUP:
1140 case REQ_NOP:
1141 break;
1142
1143 case REQ_QUIT:
1144 goto quit;
1145
1146 default:
1147 req->result = ENOSYS;
1148 break;
1149 }
1150
1151 req->errorno = errno;
1152
1153 LOCK (reslock);
1154
1155 ++npending;
1156
1157 if (!reqq_push (&res_queue, req))
1158 {
1159 /* write a dummy byte to the pipe so fh becomes ready */
1160 write (respipe [1], &respipe, 1);
1161
1162 /* optionally signal the main thread asynchronously */
1163 if (main_sig)
1164 pthread_kill (main_tid, main_sig);
1165 }
1166
1167 self->req = 0;
1168 worker_clear (self);
1169
1170 UNLOCK (reslock);
1171 }
1172
1173quit:
1174 LOCK (wrklock);
1175 worker_free (self);
1176 UNLOCK (wrklock);
1177
1178 return 0;
1179}
1180
1181/*****************************************************************************/
1182
1183static void atfork_prepare (void)
1184{
1185 LOCK (wrklock);
1186 LOCK (reqlock);
1187 LOCK (reslock);
1188#if !HAVE_PREADWRITE
1189 LOCK (preadwritelock);
1190#endif
1191#if !HAVE_READDIR_R
1192 LOCK (readdirlock);
1193#endif
1194}
1195
1196static void atfork_parent (void)
1197{
1198#if !HAVE_READDIR_R
1199 UNLOCK (readdirlock);
1200#endif
1201#if !HAVE_PREADWRITE
1202 UNLOCK (preadwritelock);
1203#endif
1204 UNLOCK (reslock);
1205 UNLOCK (reqlock);
1206 UNLOCK (wrklock);
1207}
1208
1209static void atfork_child (void)
1210{
1211 aio_req prv;
1212
1213 while (prv = reqq_shift (&req_queue))
1214 req_free (prv);
1215
1216 while (prv = reqq_shift (&res_queue))
1217 req_free (prv);
1218
1219 while (wrk_first.next != &wrk_first)
1220 {
1221 worker *wrk = wrk_first.next;
1222
1223 if (wrk->req)
1224 req_free (wrk->req);
1225
1226 worker_clear (wrk);
1227 worker_free (wrk);
1228 }
1229
1230 started = 0;
1231 idle = 0;
1232 nreqs = 0;
1233 nready = 0;
1234 npending = 0;
1235
1236 close (respipe [0]);
1237 close (respipe [1]);
1238 create_pipe ();
1239
1240 atfork_parent ();
1241}
1242
1243#define dREQ \
1244 aio_req req; \
1245 int req_pri = next_pri; \
1246 next_pri = DEFAULT_PRI + PRI_BIAS; \
1247 \
1248 if (SvOK (callback) && !SvROK (callback)) \
1249 croak ("callback must be undef or of reference type"); \
1250 \
1251 Newz (0, req, 1, aio_cb); \
1252 if (!req) \
1253 croak ("out of memory during aio_req allocation"); \
1254 \
1255 req->callback = newSVsv (callback); \
1256 req->pri = req_pri
1257
1258#define REQ_SEND \
1259 req_send (req); \
1260 \
1261 if (GIMME_V != G_VOID) \
1262 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1263
1264MODULE = IO::AIO PACKAGE = IO::AIO 898MODULE = IO::AIO PACKAGE = IO::AIO
1265 899
1266PROTOTYPES: ENABLE 900PROTOTYPES: ENABLE
1267 901
1268BOOT: 902BOOT:
1269{ 903{
904 static const struct {
905 const char *name;
906 IV iv;
907 } *civ, const_iv[] = {
908# define const_niv(name, value) { # name, (IV) value },
909# define const_iv(name) { # name, (IV) name },
910# define const_eio(name) { # name, (IV) EIO_ ## name },
911
912 /* you have to re-run ./gendef0 after adding/Removing any constants here */
913
914 const_iv (ENOSYS)
915 const_iv (EXDEV)
916 const_iv (EBADR)
917
918 const_iv (O_RDONLY)
919 const_iv (O_WRONLY)
920 const_iv (O_RDWR)
921 const_iv (O_CREAT)
922 const_iv (O_TRUNC)
923 const_iv (O_EXCL)
924 const_iv (O_APPEND)
925
926 const_iv (O_ASYNC)
927 const_iv (O_DIRECT)
928 const_iv (O_NOATIME)
929
930 const_iv (O_CLOEXEC)
931 const_iv (O_NOCTTY)
932 const_iv (O_NOFOLLOW)
933 const_iv (O_NONBLOCK)
934 const_iv (O_EXEC)
935 const_iv (O_SEARCH)
936 const_iv (O_DIRECTORY)
937 const_iv (O_DSYNC)
938 const_iv (O_RSYNC)
939 const_iv (O_SYNC)
940 const_iv (O_TTY_INIT)
941
942 const_iv (S_IFIFO)
943 const_iv (S_IFCHR)
944 const_iv (S_IFBLK)
945 const_iv (S_IFLNK)
946 const_iv (S_IFREG)
947 const_iv (S_IFDIR)
948 const_iv (S_IFWHT)
949 const_iv (S_IFSOCK)
950 const_iv (S_IFMT)
951
952 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
953 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
954 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
955 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
956 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
957 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
958
959 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
960 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
961 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
962 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
963 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
964
965 const_iv (ST_RDONLY)
966 const_iv (ST_NOSUID)
967 const_iv (ST_NODEV)
968 const_iv (ST_NOEXEC)
969 const_iv (ST_SYNCHRONOUS)
970 const_iv (ST_MANDLOCK)
971 const_iv (ST_WRITE)
972 const_iv (ST_APPEND)
973 const_iv (ST_IMMUTABLE)
974 const_iv (ST_NOATIME)
975 const_iv (ST_NODIRATIME)
976 const_iv (ST_RELATIME)
977
978 const_iv (PROT_NONE)
979 const_iv (PROT_EXEC)
980 const_iv (PROT_READ)
981 const_iv (PROT_WRITE)
982
983 /*const_iv (MAP_FIXED)*/
984 const_iv (MAP_PRIVATE)
985 const_iv (MAP_SHARED)
986 const_iv (MAP_ANONYMOUS)
987
988 /* linuxish */
989 const_iv (MAP_HUGETLB)
990 const_iv (MAP_LOCKED)
991 const_iv (MAP_NORESERVE)
992 const_iv (MAP_POPULATE)
993 const_iv (MAP_NONBLOCK)
994
995 const_iv (FIEMAP_FLAG_SYNC)
996 const_iv (FIEMAP_FLAG_XATTR)
997 const_iv (FIEMAP_FLAGS_COMPAT)
998 const_iv (FIEMAP_EXTENT_LAST)
999 const_iv (FIEMAP_EXTENT_UNKNOWN)
1000 const_iv (FIEMAP_EXTENT_DELALLOC)
1001 const_iv (FIEMAP_EXTENT_ENCODED)
1002 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1003 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1004 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1005 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1006 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1007 const_iv (FIEMAP_EXTENT_MERGED)
1008 const_iv (FIEMAP_EXTENT_SHARED)
1009
1010 const_iv (SPLICE_F_MOVE)
1011 const_iv (SPLICE_F_NONBLOCK)
1012 const_iv (SPLICE_F_MORE)
1013 const_iv (SPLICE_F_GIFT)
1014
1015 const_iv (SEEK_DATA)
1016 const_iv (SEEK_HOLE)
1017
1018 /* libeio constants */
1019 const_eio (SEEK_SET)
1020 const_eio (SEEK_CUR)
1021 const_eio (SEEK_END)
1022
1023 const_eio (MCL_FUTURE)
1024 const_eio (MCL_CURRENT)
1025
1026 const_eio (MS_ASYNC)
1027 const_eio (MS_INVALIDATE)
1028 const_eio (MS_SYNC)
1029
1030 const_eio (MT_MODIFY)
1031
1032 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1033 const_eio (SYNC_FILE_RANGE_WRITE)
1034 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1035
1036 const_eio (FALLOC_FL_KEEP_SIZE)
1037 const_eio (FALLOC_FL_PUNCH_HOLE)
1038
1039 const_eio (READDIR_DENTS)
1040 const_eio (READDIR_DIRS_FIRST)
1041 const_eio (READDIR_STAT_ORDER)
1042 const_eio (READDIR_FOUND_UNKNOWN)
1043
1044 const_eio (DT_UNKNOWN)
1045 const_eio (DT_FIFO)
1046 const_eio (DT_CHR)
1047 const_eio (DT_DIR)
1048 const_eio (DT_BLK)
1049 const_eio (DT_REG)
1050 const_eio (DT_LNK)
1051 const_eio (DT_SOCK)
1052 const_eio (DT_WHT)
1053 };
1054
1270 HV *stash = gv_stashpv ("IO::AIO", 1); 1055 aio_stash = gv_stashpv ("IO::AIO" , 1);
1056 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1057 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1058 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1271 1059
1272 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1060 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1273 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1061 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1274 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279 1062
1280 create_pipe (); 1063 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282}
1283 1064
1065 reinit ();
1066}
1067
1284void 1068void
1069reinit ()
1070 PROTOTYPE:
1071
1072void
1285max_poll_reqs (int nreqs) 1073max_poll_reqs (unsigned int nreqs)
1286 PROTOTYPE: $ 1074 PROTOTYPE: $
1287 CODE: 1075 CODE:
1288 max_poll_reqs = nreqs; 1076 eio_set_max_poll_reqs (nreqs);
1289 1077
1290void 1078void
1291max_poll_time (double nseconds) 1079max_poll_time (double nseconds)
1292 PROTOTYPE: $ 1080 PROTOTYPE: $
1293 CODE: 1081 CODE:
1294 max_poll_time = nseconds * AIO_TICKS; 1082 eio_set_max_poll_time (nseconds);
1295 1083
1296void 1084void
1297min_parallel (int nthreads) 1085min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299
1300void
1301max_parallel (int nthreads)
1302 PROTOTYPE: $
1303
1304void
1305max_idle (int nthreads)
1306 PROTOTYPE: $ 1086 PROTOTYPE: $
1307 CODE: 1087 CODE:
1308 set_max_idle (nthreads); 1088 eio_set_min_parallel (nthreads);
1309 1089
1310int 1090void
1311max_outstanding (int maxreqs) 1091max_parallel (unsigned int nthreads)
1312 PROTOTYPE: $ 1092 PROTOTYPE: $
1313 CODE: 1093 CODE:
1314 RETVAL = max_outstanding; 1094 eio_set_max_parallel (nthreads);
1095
1096void
1097max_idle (unsigned int nthreads)
1098 PROTOTYPE: $
1099 CODE:
1100 eio_set_max_idle (nthreads);
1101
1102void
1103idle_timeout (unsigned int seconds)
1104 PROTOTYPE: $
1105 CODE:
1106 eio_set_idle_timeout (seconds);
1107
1108void
1109max_outstanding (unsigned int maxreqs)
1110 PROTOTYPE: $
1111 CODE:
1315 max_outstanding = maxreqs; 1112 max_outstanding = maxreqs;
1316 OUTPUT:
1317 RETVAL
1318 1113
1319void 1114void
1320aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1115aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1321 SV8 * pathname
1322 int flags
1323 int mode
1324 SV * callback
1325 PROTOTYPE: $$$;$
1326 PPCODE: 1116 PPCODE:
1327{ 1117{
1328 dREQ; 1118 dREQ;
1329 1119
1120 req->type = EIO_WD_OPEN;
1121 req_set_path1 (req, pathname);
1122
1123 REQ_SEND;
1124}
1125
1126void
1127aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1128 PPCODE:
1129{
1130 dREQ;
1131
1330 req->type = REQ_OPEN; 1132 req->type = EIO_OPEN;
1331 req->sv1 = newSVsv (pathname); 1133 req_set_path1 (req, pathname);
1332 req->ptr1 = SvPVbyte_nolen (req->sv1);
1333 req->int1 = flags; 1134 req->int1 = flags;
1334 req->mode = mode; 1135 req->int2 = mode;
1335 1136
1336 REQ_SEND; 1137 REQ_SEND;
1337} 1138}
1338 1139
1339void 1140void
1340aio_close (fh,callback=&PL_sv_undef) 1141aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341 SV * fh
1342 SV * callback
1343 PROTOTYPE: $;$
1344 ALIAS: 1142 ALIAS:
1345 aio_close = REQ_CLOSE
1346 aio_fsync = REQ_FSYNC 1143 aio_fsync = EIO_FSYNC
1347 aio_fdatasync = REQ_FDATASYNC 1144 aio_fdatasync = EIO_FDATASYNC
1145 aio_syncfs = EIO_SYNCFS
1348 PPCODE: 1146 PPCODE:
1349{ 1147{
1148 int fd = s_fileno_croak (fh, 0);
1350 dREQ; 1149 dREQ;
1351 1150
1352 req->type = ix; 1151 req->type = ix;
1353 req->fh = newSVsv (fh); 1152 req->sv1 = newSVsv (fh);
1354 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1153 req->int1 = fd;
1355 1154
1356 REQ_SEND (req); 1155 REQ_SEND;
1357} 1156}
1358 1157
1359void 1158void
1159aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1160 PPCODE:
1161{
1162 int fd = s_fileno_croak (fh, 0);
1163 dREQ;
1164
1165 req->type = EIO_SYNC_FILE_RANGE;
1166 req->sv1 = newSVsv (fh);
1167 req->int1 = fd;
1168 req->offs = offset;
1169 req->size = nbytes;
1170 req->int2 = flags;
1171
1172 REQ_SEND;
1173}
1174
1175void
1176aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1177 PPCODE:
1178{
1179 int fd = s_fileno_croak (fh, 0);
1180 dREQ;
1181
1182 req->type = EIO_FALLOCATE;
1183 req->sv1 = newSVsv (fh);
1184 req->int1 = fd;
1185 req->int2 = mode;
1186 req->offs = offset;
1187 req->size = len;
1188
1189 REQ_SEND;
1190}
1191
1192void
1193aio_close (SV *fh, SV *callback=&PL_sv_undef)
1194 PPCODE:
1195{
1196 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1197 int fd = s_fileno_croak (fh, 0);
1198 dREQ;
1199
1200 if (expect_false (close_fd < 0))
1201 {
1202 int pipefd [2];
1203
1204 if (
1205#ifdef _WIN32
1206 _pipe (pipefd, 1, _O_BINARY) < 0
1207#else
1208 pipe (pipefd) < 0
1209 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1210#endif
1211 || close (pipefd [1]) < 0
1212 )
1213 abort (); /*D*/
1214
1215 close_fd = pipefd [0];
1216 }
1217
1218 req->type = EIO_DUP2;
1219 req->int1 = close_fd;
1220 req->sv2 = newSVsv (fh);
1221 req->int2 = fd;
1222
1223 REQ_SEND;
1224}
1225
1226void
1227aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1228 PPCODE:
1229{
1230 int fd = s_fileno_croak (fh, 0);
1231 dREQ;
1232
1233 req->type = EIO_SEEK;
1234 req->sv1 = newSVsv (fh);
1235 req->int1 = fd;
1236 req->offs = SvVAL64 (offset);
1237 req->int2 = whence;
1238
1239 REQ_SEND;
1240}
1241
1242void
1360aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1243aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361 SV * fh
1362 UV offset
1363 UV length
1364 SV8 * data
1365 UV dataoffset
1366 SV * callback
1367 ALIAS: 1244 ALIAS:
1368 aio_read = REQ_READ 1245 aio_read = EIO_READ
1369 aio_write = REQ_WRITE 1246 aio_write = EIO_WRITE
1370 PROTOTYPE: $$$$$;$
1371 PPCODE: 1247 PPCODE:
1372{ 1248{
1373 STRLEN svlen; 1249 STRLEN svlen;
1250 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374 char *svptr = SvPVbyte (data, svlen); 1251 char *svptr = SvPVbyte (data, svlen);
1375 1252 UV len = SvUV (length);
1376 SvUPGRADE (data, SVt_PV);
1377 SvPOK_on (data);
1378 1253
1379 if (dataoffset < 0) 1254 if (dataoffset < 0)
1380 dataoffset += svlen; 1255 dataoffset += svlen;
1381 1256
1382 if (dataoffset < 0 || dataoffset > svlen) 1257 if (dataoffset < 0 || dataoffset > svlen)
1383 croak ("data offset outside of string"); 1258 croak ("dataoffset outside of data scalar");
1384 1259
1385 if (ix == REQ_WRITE) 1260 if (ix == EIO_WRITE)
1386 { 1261 {
1387 /* write: check length and adjust. */ 1262 /* write: check length and adjust. */
1388 if (length < 0 || length + dataoffset > svlen) 1263 if (!SvOK (length) || len + dataoffset > svlen)
1389 length = svlen - dataoffset; 1264 len = svlen - dataoffset;
1390 } 1265 }
1391 else 1266 else
1392 { 1267 {
1393 /* read: grow scalar as necessary */ 1268 /* read: check type and grow scalar as necessary */
1269 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1394 svptr = SvGROW (data, length + dataoffset + 1); 1270 svptr = sv_grow (data, len + dataoffset + 1);
1271 else if (SvCUR (data) < len + dataoffset)
1272 croak ("length + dataoffset outside of scalar, and cannot grow");
1395 } 1273 }
1396
1397 if (length < 0)
1398 croak ("length must not be negative");
1399 1274
1400 { 1275 {
1401 dREQ; 1276 dREQ;
1402 1277
1403 req->type = ix; 1278 req->type = ix;
1404 req->fh = newSVsv (fh); 1279 req->sv1 = newSVsv (fh);
1405 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1280 req->int1 = fd;
1406 : IoOFP (sv_2io (fh))); 1281 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407 req->offs = offset;
1408 req->size = length; 1282 req->size = len;
1409 req->sv1 = SvREFCNT_inc (data); 1283 req->sv2 = SvREFCNT_inc (data);
1410 req->ptr1 = (char *)svptr + dataoffset; 1284 req->ptr2 = (char *)svptr + dataoffset;
1411 req->stroffset = dataoffset; 1285 req->stroffset = dataoffset;
1412 1286
1413 if (!SvREADONLY (data)) 1287 if (!SvREADONLY (data))
1414 { 1288 {
1415 SvREADONLY_on (data); 1289 SvREADONLY_on (data);
1416 req->flags |= FLAG_SV1_RO_OFF; 1290 req->flags |= FLAG_SV2_RO_OFF;
1417 } 1291 }
1418 1292
1419 REQ_SEND; 1293 REQ_SEND;
1420 } 1294 }
1421} 1295}
1422 1296
1423void 1297void
1424aio_readlink (path,callback=&PL_sv_undef) 1298aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1425 SV8 * path 1299 ALIAS:
1426 SV * callback 1300 aio_readlink = EIO_READLINK
1427 PROTOTYPE: $$;$ 1301 aio_realpath = EIO_REALPATH
1428 PPCODE: 1302 PPCODE:
1429{ 1303{
1430 SV *data;
1431 dREQ; 1304 dREQ;
1432 1305
1433 data = newSV (NAME_MAX);
1434 SvPOK_on (data);
1435
1436 req->type = REQ_READLINK; 1306 req->type = ix;
1437 req->fh = newSVsv (path); 1307 req_set_path1 (req, pathname);
1438 req->ptr2 = SvPVbyte_nolen (req->fh);
1439 req->sv1 = data;
1440 req->ptr1 = SvPVbyte_nolen (data);
1441 1308
1442 REQ_SEND; 1309 REQ_SEND;
1443} 1310}
1444 1311
1445void 1312void
1446aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1313aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447 SV * out_fh
1448 SV * in_fh
1449 UV in_offset
1450 UV length
1451 SV * callback
1452 PROTOTYPE: $$$$;$
1453 PPCODE: 1314 PPCODE:
1454{ 1315{
1316 int ifd = s_fileno_croak (in_fh , 0);
1317 int ofd = s_fileno_croak (out_fh, 1);
1455 dREQ; 1318 dREQ;
1456 1319
1457 req->type = REQ_SENDFILE; 1320 req->type = EIO_SENDFILE;
1458 req->fh = newSVsv (out_fh); 1321 req->sv1 = newSVsv (out_fh);
1459 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1322 req->int1 = ofd;
1460 req->sv2 = newSVsv (in_fh); 1323 req->sv2 = newSVsv (in_fh);
1461 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1324 req->int2 = ifd;
1462 req->offs = in_offset; 1325 req->offs = in_offset;
1463 req->size = length; 1326 req->size = length;
1464 1327
1465 REQ_SEND; 1328 REQ_SEND;
1466} 1329}
1467 1330
1468void 1331void
1469aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1332aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470 SV * fh
1471 UV offset
1472 IV length
1473 SV * callback
1474 PROTOTYPE: $$$;$
1475 PPCODE: 1333 PPCODE:
1476{ 1334{
1335 int fd = s_fileno_croak (fh, 0);
1477 dREQ; 1336 dREQ;
1478 1337
1479 req->type = REQ_READAHEAD; 1338 req->type = EIO_READAHEAD;
1480 req->fh = newSVsv (fh); 1339 req->sv1 = newSVsv (fh);
1481 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1340 req->int1 = fd;
1482 req->offs = offset; 1341 req->offs = offset;
1483 req->size = length; 1342 req->size = length;
1484 1343
1485 REQ_SEND; 1344 REQ_SEND;
1486} 1345}
1487 1346
1488void 1347void
1489aio_stat (fh_or_path,callback=&PL_sv_undef) 1348aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490 SV8 * fh_or_path
1491 SV * callback
1492 ALIAS: 1349 ALIAS:
1493 aio_stat = REQ_STAT 1350 aio_stat = EIO_STAT
1494 aio_lstat = REQ_LSTAT 1351 aio_lstat = EIO_LSTAT
1352 aio_statvfs = EIO_STATVFS
1495 PPCODE: 1353 PPCODE:
1496{ 1354{
1497 dREQ; 1355 dREQ;
1498 1356
1499 req->ptr2 = malloc (sizeof (Stat_t)); 1357 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1500 if (!req->ptr2)
1501 {
1502 req_free (req);
1503 croak ("out of memory during aio_stat statdata allocation");
1504 }
1505
1506 req->flags |= FLAG_PTR2_FREE;
1507
1508 if (SvPOK (fh_or_path))
1509 {
1510 req->type = ix;
1511 req->sv1 = newSVsv (fh_or_path);
1512 req->ptr1 = SvPVbyte_nolen (req->sv1);
1513 }
1514 else
1515 {
1516 req->type = REQ_FSTAT;
1517 req->fh = newSVsv (fh_or_path);
1518 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519 }
1520 1358
1521 REQ_SEND; 1359 REQ_SEND;
1522} 1360}
1523 1361
1362UV
1363major (UV dev)
1364 ALIAS:
1365 minor = 1
1366 CODE:
1367 RETVAL = ix ? major (dev) : minor (dev);
1368 OUTPUT:
1369 RETVAL
1370
1371UV
1372makedev (UV maj, UV min)
1373 CODE:
1374 RETVAL = makedev (maj, min);
1375 OUTPUT:
1376 RETVAL
1377
1524void 1378void
1379aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1380 PPCODE:
1381{
1382 dREQ;
1383
1384 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1385 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1386 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1387
1388 REQ_SEND;
1389}
1390
1391void
1392aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1393 PPCODE:
1394{
1395 dREQ;
1396
1397 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1398 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1399
1400 REQ_SEND;
1401}
1402
1403void
1404aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1405 PPCODE:
1406{
1407 dREQ;
1408
1409 req->int2 = mode;
1410 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1411
1412 REQ_SEND;
1413}
1414
1415void
1416aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1417 PPCODE:
1418{
1419 dREQ;
1420
1421 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1422 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1423 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1424
1425 REQ_SEND;
1426}
1427
1428void
1429aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1430 PPCODE:
1431{
1432 dREQ;
1433
1434 req->type = EIO_READDIR;
1435 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1436
1437 if (flags & EIO_READDIR_DENTS)
1438 req->int1 |= EIO_READDIR_CUSTOM2;
1439
1440 req_set_path1 (req, pathname);
1441
1442 REQ_SEND;
1443}
1444
1445void
1446aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1447 PPCODE:
1448{
1449 dREQ;
1450
1451 req->type = EIO_MKDIR;
1452 req->int2 = mode;
1453 req_set_path1 (req, pathname);
1454
1455 REQ_SEND;
1456}
1457
1458void
1525aio_unlink (pathname,callback=&PL_sv_undef) 1459aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526 SV8 * pathname
1527 SV * callback
1528 ALIAS: 1460 ALIAS:
1529 aio_unlink = REQ_UNLINK 1461 aio_unlink = EIO_UNLINK
1530 aio_rmdir = REQ_RMDIR 1462 aio_rmdir = EIO_RMDIR
1531 aio_readdir = REQ_READDIR 1463 aio_readdir = EIO_READDIR
1532 PPCODE: 1464 PPCODE:
1533{ 1465{
1534 dREQ; 1466 dREQ;
1535 1467
1536 req->type = ix; 1468 req->type = ix;
1537 req->sv1 = newSVsv (pathname); 1469 req_set_path1 (req, pathname);
1538 req->ptr1 = SvPVbyte_nolen (req->sv1);
1539 1470
1540 REQ_SEND; 1471 REQ_SEND;
1541} 1472}
1542 1473
1543void 1474void
1544aio_mkdir (pathname,mode,callback=&PL_sv_undef) 1475aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1545 SV8 * pathname 1476 ALIAS:
1546 UV mode 1477 aio_link = EIO_LINK
1547 SV * callback 1478 aio_symlink = EIO_SYMLINK
1479 aio_rename = EIO_RENAME
1548 PPCODE: 1480 PPCODE:
1549{ 1481{
1550 dREQ; 1482 eio_wd wd2 = 0;
1551
1552 req->type = REQ_MKDIR;
1553 req->sv1 = newSVsv (pathname);
1554 req->ptr1 = SvPVbyte_nolen (req->sv1);
1555 req->mode = mode;
1556
1557 REQ_SEND;
1558}
1559
1560void
1561aio_link (oldpath,newpath,callback=&PL_sv_undef)
1562 SV8 * oldpath
1563 SV8 * newpath
1564 SV * callback
1565 ALIAS:
1566 aio_link = REQ_LINK
1567 aio_symlink = REQ_SYMLINK
1568 aio_rename = REQ_RENAME
1569 PPCODE:
1570{
1571 dREQ; 1483 dREQ;
1572 1484
1573 req->type = ix; 1485 req->type = ix;
1574 req->fh = newSVsv (oldpath); 1486 req_set_path1 (req, oldpath);
1575 req->ptr2 = SvPVbyte_nolen (req->fh); 1487 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1576 req->sv1 = newSVsv (newpath); 1488 req->int3 = (long)wd2;
1577 req->ptr1 = SvPVbyte_nolen (req->sv1);
1578 1489
1579 REQ_SEND; 1490 REQ_SEND;
1580} 1491}
1581 1492
1582void 1493void
1583aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1494aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1584 SV8 * pathname
1585 UV mode
1586 UV dev
1587 SV * callback
1588 PPCODE: 1495 PPCODE:
1589{ 1496{
1590 dREQ; 1497 dREQ;
1591 1498
1592 req->type = REQ_MKNOD; 1499 req->type = EIO_MKNOD;
1593 req->sv1 = newSVsv (pathname);
1594 req->ptr1 = SvPVbyte_nolen (req->sv1);
1595 req->mode = (mode_t)mode; 1500 req->int2 = (mode_t)mode;
1596 req->offs = dev; 1501 req->offs = dev;
1502 req_set_path1 (req, pathname);
1597 1503
1598 REQ_SEND; 1504 REQ_SEND;
1599} 1505}
1600 1506
1601void 1507void
1508aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1509 ALIAS:
1510 aio_mtouch = EIO_MTOUCH
1511 aio_msync = EIO_MSYNC
1512 PPCODE:
1513{
1514 STRLEN svlen;
1515 char *svptr = SvPVbyte (data, svlen);
1516 UV len = SvUV (length);
1517
1518 if (offset < 0)
1519 offset += svlen;
1520
1521 if (offset < 0 || offset > svlen)
1522 croak ("offset outside of scalar");
1523
1524 if (!SvOK (length) || len + offset > svlen)
1525 len = svlen - offset;
1526
1527 {
1528 dREQ;
1529
1530 req->type = ix;
1531 req->sv2 = SvREFCNT_inc (data);
1532 req->ptr2 = (char *)svptr + offset;
1533 req->size = len;
1534 req->int1 = flags;
1535
1536 REQ_SEND;
1537 }
1538}
1539
1540void
1541aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1542 PPCODE:
1543{
1544 STRLEN svlen;
1545 char *svptr = SvPVbyte (data, svlen);
1546 UV len = SvUV (length);
1547
1548 if (offset < 0)
1549 offset += svlen;
1550
1551 if (offset < 0 || offset > svlen)
1552 croak ("offset outside of scalar");
1553
1554 if (!SvOK (length) || len + offset > svlen)
1555 len = svlen - offset;
1556
1557 {
1558 dREQ;
1559
1560 req->type = EIO_MLOCK;
1561 req->sv2 = SvREFCNT_inc (data);
1562 req->ptr2 = (char *)svptr + offset;
1563 req->size = len;
1564
1565 REQ_SEND;
1566 }
1567}
1568
1569void
1570aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1571 PPCODE:
1572{
1573 dREQ;
1574
1575 req->type = EIO_MLOCKALL;
1576 req->int1 = flags;
1577
1578 REQ_SEND;
1579}
1580
1581void
1582aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1583 PPCODE:
1584{
1585 int fd = s_fileno_croak (fh, 0);
1586 dREQ;
1587
1588 req->type = EIO_CUSTOM;
1589 req->sv1 = newSVsv (fh);
1590 req->int1 = fd;
1591
1592 req->feed = fiemap;
1593#if HAVE_FIEMAP
1594 /* keep our fingers crossed that the next two types are 64 bit */
1595 req->offs = start;
1596 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1597 req->int2 = flags;
1598 req->int3 = SvOK (count) ? SvIV (count) : -1;
1599#endif
1600
1601 REQ_SEND;
1602}
1603
1604void
1602aio_busy (delay,callback=&PL_sv_undef) 1605aio_busy (double delay, SV *callback=&PL_sv_undef)
1603 double delay
1604 SV * callback
1605 PPCODE: 1606 PPCODE:
1606{ 1607{
1607 dREQ; 1608 dREQ;
1608 1609
1609 req->type = REQ_BUSY; 1610 req->type = EIO_BUSY;
1610 req->int1 = delay < 0. ? 0 : delay; 1611 req->nv1 = delay < 0. ? 0. : delay;
1611 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612 1612
1613 REQ_SEND; 1613 REQ_SEND;
1614} 1614}
1615 1615
1616void 1616void
1617aio_group (callback=&PL_sv_undef) 1617aio_group (SV *callback=&PL_sv_undef)
1618 SV * callback
1619 PROTOTYPE: ;$
1620 PPCODE: 1618 PPCODE:
1621{ 1619{
1622 dREQ; 1620 dREQ;
1623 1621
1624 req->type = REQ_GROUP; 1622 req->type = EIO_GROUP;
1625 1623
1624 PUTBACK;
1626 req_send (req); 1625 req_submit (req);
1626 SPAGAIN;
1627
1627 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1628 XPUSHs (req_sv (req, aio_grp_stash));
1628} 1629}
1629 1630
1630void 1631void
1631aio_nop (callback=&PL_sv_undef) 1632aio_nop (SV *callback=&PL_sv_undef)
1632 SV * callback 1633 ALIAS:
1634 aio_nop = EIO_NOP
1635 aio_sync = EIO_SYNC
1633 PPCODE: 1636 PPCODE:
1634{ 1637{
1635 dREQ; 1638 dREQ;
1636 1639
1637 req->type = REQ_NOP; 1640 req->type = ix;
1638 1641
1639 REQ_SEND; 1642 REQ_SEND;
1640} 1643}
1641 1644
1642int 1645int
1643aioreq_pri (int pri = 0) 1646aioreq_pri (int pri = 0)
1644 PROTOTYPE: ;$
1645 CODE: 1647 CODE:
1646 RETVAL = next_pri - PRI_BIAS; 1648 RETVAL = next_pri;
1647 if (items > 0) 1649 if (items > 0)
1648 { 1650 {
1649 if (pri < PRI_MIN) pri = PRI_MIN; 1651 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650 if (pri > PRI_MAX) pri = PRI_MAX; 1652 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651 next_pri = pri + PRI_BIAS; 1653 next_pri = pri;
1652 } 1654 }
1653 OUTPUT: 1655 OUTPUT:
1654 RETVAL 1656 RETVAL
1655 1657
1656void 1658void
1657aioreq_nice (int nice = 0) 1659aioreq_nice (int nice = 0)
1658 CODE: 1660 CODE:
1659 nice = next_pri - nice; 1661 nice = next_pri - nice;
1660 if (nice < PRI_MIN) nice = PRI_MIN; 1662 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661 if (nice > PRI_MAX) nice = PRI_MAX; 1663 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662 next_pri = nice + PRI_BIAS; 1664 next_pri = nice;
1663 1665
1664void 1666void
1665flush () 1667flush ()
1666 PROTOTYPE:
1667 CODE: 1668 CODE:
1668 while (nreqs) 1669 while (eio_nreqs ())
1669 { 1670 {
1670 poll_wait (); 1671 poll_wait ();
1671 poll_cb (); 1672 poll_cb ();
1672 } 1673 }
1673 1674
1674int 1675int
1675poll() 1676poll ()
1676 PROTOTYPE:
1677 CODE: 1677 CODE:
1678 poll_wait (); 1678 poll_wait ();
1679 RETVAL = poll_cb (); 1679 RETVAL = poll_cb ();
1680 OUTPUT: 1680 OUTPUT:
1681 RETVAL 1681 RETVAL
1682 1682
1683int 1683int
1684poll_fileno() 1684poll_fileno ()
1685 PROTOTYPE:
1686 CODE: 1685 CODE:
1687 RETVAL = respipe [0]; 1686 RETVAL = s_epipe_fd (&respipe);
1688 OUTPUT: 1687 OUTPUT:
1689 RETVAL 1688 RETVAL
1690 1689
1691int 1690int
1692poll_cb(...) 1691poll_cb (...)
1693 PROTOTYPE: 1692 PROTOTYPE:
1694 CODE: 1693 CODE:
1695 RETVAL = poll_cb (); 1694 RETVAL = poll_cb ();
1696 OUTPUT: 1695 OUTPUT:
1697 RETVAL 1696 RETVAL
1698 1697
1699void 1698void
1700poll_wait() 1699poll_wait ()
1701 PROTOTYPE:
1702 CODE: 1700 CODE:
1703 poll_wait (); 1701 poll_wait ();
1704 1702
1705void
1706setsig (int signum = SIGIO)
1707 PROTOTYPE: ;$
1708 CODE:
1709{
1710 if (block_sig_level)
1711 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713 LOCK (reslock);
1714 main_tid = pthread_self ();
1715 main_sig = signum;
1716 UNLOCK (reslock);
1717
1718 if (main_sig && npending)
1719 pthread_kill (main_tid, main_sig);
1720}
1721
1722void
1723aio_block (SV *cb)
1724 PROTOTYPE: &
1725 PPCODE:
1726{
1727 int count;
1728
1729 block_sig ();
1730 PUSHMARK (SP);
1731 PUTBACK;
1732 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733 SPAGAIN;
1734 unblock_sig ();
1735
1736 if (SvTRUE (ERRSV))
1737 croak (0);
1738
1739 XSRETURN (count);
1740}
1741
1742int 1703int
1743nreqs() 1704nreqs ()
1744 PROTOTYPE:
1745 CODE: 1705 CODE:
1746 RETVAL = nreqs; 1706 RETVAL = eio_nreqs ();
1747 OUTPUT: 1707 OUTPUT:
1748 RETVAL 1708 RETVAL
1749 1709
1750int 1710int
1751nready() 1711nready ()
1752 PROTOTYPE:
1753 CODE: 1712 CODE:
1754 RETVAL = get_nready (); 1713 RETVAL = eio_nready ();
1755 OUTPUT: 1714 OUTPUT:
1756 RETVAL 1715 RETVAL
1757 1716
1758int 1717int
1759npending() 1718npending ()
1760 PROTOTYPE:
1761 CODE: 1719 CODE:
1762 RETVAL = get_npending (); 1720 RETVAL = eio_npending ();
1763 OUTPUT: 1721 OUTPUT:
1764 RETVAL 1722 RETVAL
1765 1723
1766int 1724int
1767nthreads() 1725nthreads ()
1768 PROTOTYPE:
1769 CODE: 1726 CODE:
1770 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1727 RETVAL = eio_nthreads ();
1771 RETVAL = started;
1772 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773 OUTPUT: 1728 OUTPUT:
1774 RETVAL 1729 RETVAL
1775 1730
1731int
1732fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1733 CODE:
1734 RETVAL = posix_fadvise (fh, offset, length, advice);
1735 OUTPUT:
1736 RETVAL
1737
1738IV
1739sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1740 CODE:
1741 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1742 OUTPUT:
1743 RETVAL
1744
1745void
1746mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1747 PPCODE:
1748 sv_unmagic (scalar, MMAP_MAGIC);
1749{
1750 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1751 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1752 if (addr == (void *)-1)
1753 XSRETURN_NO;
1754
1755 sv_force_normal (scalar);
1756
1757 /* we store the length in mg_obj, as namlen is I32 :/ */
1758 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1759 ->mg_obj = (SV *)length;
1760
1761 SvUPGRADE (scalar, SVt_PV); /* nop... */
1762
1763 if (!(prot & PROT_WRITE))
1764 SvREADONLY_on (scalar);
1765
1766 if (SvLEN (scalar))
1767 Safefree (SvPVX (scalar));
1768
1769 SvPVX (scalar) = (char *)addr;
1770 SvCUR_set (scalar, length);
1771 SvLEN_set (scalar, 0);
1772 SvPOK_only (scalar);
1773
1774 XSRETURN_YES;
1775}
1776
1777void
1778munmap (SV *scalar)
1779 CODE:
1780 sv_unmagic (scalar, MMAP_MAGIC);
1781
1782int
1783madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1784 ALIAS:
1785 mprotect = 1
1786 CODE:
1787{
1788 STRLEN svlen;
1789 void *addr = SvPVbyte (scalar, svlen);
1790 STRLEN len = SvUV (length);
1791
1792 if (offset < 0)
1793 offset += svlen;
1794
1795 if (offset < 0 || offset > svlen)
1796 croak ("offset outside of scalar");
1797
1798 if (!SvOK (length) || len + offset > svlen)
1799 len = svlen - offset;
1800
1801 addr = (void *)(((intptr_t)addr) + offset);
1802 eio_page_align (&addr, &len);
1803
1804 switch (ix)
1805 {
1806 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1807 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1808 }
1809}
1810 OUTPUT:
1811 RETVAL
1812
1813int
1814munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1815 CODE:
1816{
1817 STRLEN svlen;
1818 void *addr = SvPVbyte (scalar, svlen);
1819 size_t len = SvUV (length);
1820
1821 if (offset < 0)
1822 offset += svlen;
1823
1824 if (offset < 0 || offset > svlen)
1825 croak ("offset outside of scalar");
1826
1827 if (!SvOK (length) || len + offset > svlen)
1828 len = svlen - offset;
1829
1830 addr = (void *)(((intptr_t)addr) + offset);
1831 eio_page_align (&addr, &len);
1832#if _POSIX_MEMLOCK_RANGE
1833 RETVAL = munlock (addr, len);
1834#else
1835 RETVAL = EIO_ENOSYS ();
1836#endif
1837}
1838 OUTPUT:
1839 RETVAL
1840
1841int
1842munlockall ()
1843 CODE:
1844#if _POSIX_MEMLOCK
1845 munlockall ();
1846#else
1847 RETVAL = EIO_ENOSYS ();
1848#endif
1849 OUTPUT:
1850 RETVAL
1851
1852int
1853splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1854 CODE:
1855{
1856#if HAVE_LINUX_SPLICE
1857 loff_t off_in_, off_out_;
1858 RETVAL = splice (
1859 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1860 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1861 length, flags
1862 );
1863#else
1864 RETVAL = EIO_ENOSYS ();
1865#endif
1866}
1867 OUTPUT:
1868 RETVAL
1869
1870int
1871tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1872 CODE:
1873#if HAVE_LINUX_SPLICE
1874 RETVAL = tee (rfh, wfh, length, flags);
1875#else
1876 RETVAL = EIO_ENOSYS ();
1877#endif
1878 OUTPUT:
1879 RETVAL
1880
1881int
1882pipesize (aio_rfd rfh, int new_size = -1)
1883 PROTOTYPE: $;$
1884 CODE:
1885#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1886 if (new_size >= 0)
1887 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1888 else
1889 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1890#else
1891 errno = ENOSYS;
1892 RETVAL = -1;
1893#endif
1894 OUTPUT:
1895 RETVAL
1896
1897void _on_next_submit (SV *cb)
1898 CODE:
1899 SvREFCNT_dec (on_next_submit);
1900 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1901
1776PROTOTYPES: DISABLE 1902PROTOTYPES: DISABLE
1903
1904MODULE = IO::AIO PACKAGE = IO::AIO::WD
1905
1906BOOT:
1907{
1908 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1909 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1910}
1911
1912void
1913DESTROY (SV *self)
1914 CODE:
1915{
1916 aio_wd wd = SvAIO_WD (self);
1917#if HAVE_AT
1918 {
1919 SV *callback = &PL_sv_undef;
1920 dREQ; /* clobbers next_pri :/ */
1921 next_pri = req->pri; /* restore next_pri */
1922 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1923 req->type = EIO_WD_CLOSE;
1924 req->wd = wd;
1925 REQ_SEND;
1926 }
1927#else
1928 eio_wd_close_sync (wd);
1929#endif
1930}
1777 1931
1778MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1932MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779 1933
1780void 1934void
1781cancel (aio_req_ornot req) 1935cancel (aio_req_ornot req)
1782 CODE: 1936 CODE:
1783 req_cancel (req); 1937 eio_cancel (req);
1784 1938
1785void 1939void
1786cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1940cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787 CODE: 1941 PPCODE:
1942{
1943 if (GIMME_V != G_VOID)
1944 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1945
1946 if (items > 1)
1947 {
1948 SV *cb_cv =get_cb (callback);
1949
1788 SvREFCNT_dec (req->callback); 1950 SvREFCNT_dec (req->callback);
1789 req->callback = newSVsv (callback); 1951 req->callback = SvREFCNT_inc (cb_cv);
1952 }
1953}
1790 1954
1791MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1955MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792 1956
1793void 1957void
1794add (aio_req grp, ...) 1958add (aio_req grp, ...)
1795 PPCODE: 1959 PPCODE:
1796{ 1960{
1797 int i; 1961 int i;
1798 aio_req req;
1799
1800 if (main_sig && !block_sig_level)
1801 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802 1962
1803 if (grp->int1 == 2) 1963 if (grp->int1 == 2)
1804 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1964 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805 1965
1806 for (i = 1; i < items; ++i ) 1966 for (i = 1; i < items; ++i )
1807 { 1967 {
1968 aio_req req;
1969
1808 if (GIMME_V != G_VOID) 1970 if (GIMME_V != G_VOID)
1809 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1971 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810 1972
1811 req = SvAIO_REQ (ST (i)); 1973 req = SvAIO_REQ (ST (i));
1812 1974
1813 if (req) 1975 if (req)
1814 { 1976 eio_grp_add (grp, req);
1815 ++grp->size;
1816 req->grp = grp;
1817
1818 req->grp_prev = 0;
1819 req->grp_next = grp->grp_first;
1820
1821 if (grp->grp_first)
1822 grp->grp_first->grp_prev = req;
1823
1824 grp->grp_first = req;
1825 }
1826 } 1977 }
1827} 1978}
1828 1979
1829void 1980void
1830cancel_subs (aio_req_ornot req) 1981cancel_subs (aio_req_ornot req)
… …
1839 AV *av; 1990 AV *av;
1840 1991
1841 grp->errorno = errno; 1992 grp->errorno = errno;
1842 1993
1843 av = newAV (); 1994 av = newAV ();
1995 av_extend (av, items - 1);
1844 1996
1845 for (i = 1; i < items; ++i ) 1997 for (i = 1; i < items; ++i )
1846 av_push (av, newSVsv (ST (i))); 1998 av_push (av, newSVsv (ST (i)));
1847 1999
1848 SvREFCNT_dec (grp->sv1); 2000 SvREFCNT_dec (grp->sv1);
… …
1855 grp->errorno = errorno; 2007 grp->errorno = errorno;
1856 2008
1857void 2009void
1858limit (aio_req grp, int limit) 2010limit (aio_req grp, int limit)
1859 CODE: 2011 CODE:
1860 grp->int2 = limit; 2012 eio_grp_limit (grp, limit);
1861 aio_grp_feed (grp);
1862 2013
1863void 2014void
1864feed (aio_req grp, SV *callback=&PL_sv_undef) 2015feed (aio_req grp, SV *callback=&PL_sv_undef)
1865 CODE: 2016 CODE:
1866{ 2017{
1867 SvREFCNT_dec (grp->sv2); 2018 SvREFCNT_dec (grp->sv2);
1868 grp->sv2 = newSVsv (callback); 2019 grp->sv2 = newSVsv (callback);
2020 grp->feed = aio_grp_feed;
1869 2021
1870 if (grp->int2 <= 0) 2022 if (grp->int2 <= 0)
1871 grp->int2 = 2; 2023 grp->int2 = 2;
1872 2024
1873 aio_grp_feed (grp); 2025 eio_grp_limit (grp, grp->int2);
1874} 2026}
1875 2027

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