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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.223 by root, Tue Aug 28 03:13:33 2012 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>
19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
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>
82 #include <sys/select.h>
83 #include <unistd.h>
23#include <utime.h> 84 #include <utime.h>
85 #include <signal.h>
24 86
25#if HAVE_SENDFILE 87 #define EIO_STRUCT_STAT Stat_t
26# if __linux 88
27# include <sys/sendfile.h> 89#endif
28# elif __freebsd 90
29# include <sys/socket.h> 91/*****************************************************************************/
30# include <sys/uio.h> 92
31# elif __hpux 93#if __GNUC__ >= 3
32# include <sys/socket.h> 94# define expect(expr,value) __builtin_expect ((expr),(value))
33# elif __solaris /* not yet */ 95#else
34# include <sys/sendfile.h> 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
35# else 140# else
36# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37# endif 142# endif
38#endif 143#endif
39 144
40/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
41#define IDLE_TIMEOUT 10 146#include "def0.h"
42 147
43/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
44#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
45# define NAME_MAX 4096
46#endif 150#endif
47 151#ifndef major
48/* buffer size for various temporary buffers */ 152# define major(dev) ((dev) >> 8)
49#define AIO_BUFSIZE 65536
50
51/* use NV for 32 bit perls as it allows larger offsets */
52#if IVSIZE >= 8
53# define SvVAL64 SvIV
54#else
55# define SvVAL64 SvNV
56#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
57 157
58#define dBUF \ 158#ifndef PAGESIZE
59 char *aio_buf; \ 159# define PAGESIZE sysconf (_SC_PAGESIZE)
60 LOCK (wrklock); \ 160#endif
61 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
62 UNLOCK (wrklock); \
63 if (!aio_buf) \
64 return -1;
65 161
66typedef SV SV8; /* byte-sv, used for argument-checking */ 162/*****************************************************************************/
67 163
68enum { 164static void
69 REQ_QUIT, 165fiemap (eio_req *req)
70 REQ_OPEN, REQ_CLOSE,
71 REQ_READ, REQ_WRITE,
72 REQ_READAHEAD, REQ_SENDFILE,
73 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74 REQ_UTIME, REQ_FUTIME,
75 REQ_CHMOD, REQ_FCHMOD,
76 REQ_CHOWN, REQ_FCHOWN,
77 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79 REQ_MKNOD, REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81 REQ_GROUP, REQ_NOP,
82 REQ_BUSY,
83};
84
85#define AIO_REQ_KLASS "IO::AIO::REQ"
86#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88typedef struct aio_cb
89{ 166{
90 struct aio_cb *volatile next; 167 req->result = -1;
91 168
92 SV *callback; 169#if HAVE_FIEMAP
93 SV *sv1, *sv2; 170 /* assume some c99 */
94 void *ptr1, *ptr2; 171 struct fiemap *fiemap = 0;
95 off_t offs; 172 size_t end_offset;
96 size_t size; 173 int count = req->int3;
97 ssize_t result;
98 double nv1, nv2;
99 174
100 STRLEN stroffset; 175 req->flags |= EIO_FLAG_PTR1_FREE;
101 int type;
102 int int1, int2, int3;
103 int errorno;
104 mode_t mode; /* open */
105 176
106 unsigned char flags; 177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
107 unsigned char pri; 178 /* increase in 3.5kb steps */
179 if (count < 0)
180 count = 8;
108 181
109 SV *self; /* the perl counterpart of this request, if any */ 182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 183 errno = ENOMEM;
111} aio_cb; 184 if (!fiemap)
112
113enum {
114 FLAG_CANCELLED = 0x01, /* request was cancelled */
115 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117};
118
119typedef aio_cb *aio_req;
120typedef aio_cb *aio_req_ornot;
121
122enum {
123 PRI_MIN = -4,
124 PRI_MAX = 4,
125
126 DEFAULT_PRI = 0,
127 PRI_BIAS = -PRI_MIN,
128 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129};
130
131#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133static unsigned int max_poll_time = 0;
134static unsigned int max_poll_reqs = 0;
135
136/* calculcate time difference in ~1/AIO_TICKS of a second */
137static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138{
139 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
141}
142
143static thread_t main_tid;
144static int main_sig;
145static int block_sig_level;
146
147void block_sig ()
148{
149 sigset_t ss;
150
151 if (block_sig_level++)
152 return; 185 return;
153 186
154 if (!main_sig) 187 req->ptr1 = fiemap;
188
189 fiemap->fm_start = req->offs;
190 fiemap->fm_length = req->size;
191 fiemap->fm_flags = req->int2;
192 fiemap->fm_extent_count = count;
193
194 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
155 return; 195 return;
156 196
157 sigemptyset (&ss); 197 if (req->int3 >= 0 /* not autosizing */
158 sigaddset (&ss, main_sig); 198 || !fiemap->fm_mapped_extents /* no more extents */
159 pthread_sigmask (SIG_BLOCK, &ss, 0); 199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160} 200 goto done;
161 201
162void unblock_sig () 202 /* else we have to loop -
163{ 203 * it would be tempting (atcually I tried that first) to just query the
164 sigset_t ss; 204 * number of extents needed, but linux often feels like not returning all
205 * extents, without telling us it left any out. this complicates
206 * this quite a bit.
207 */
165 208
166 if (--block_sig_level) 209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167 return;
168 210
169 if (!main_sig) 211 for (;;)
170 return;
171
172 sigemptyset (&ss);
173 sigaddset (&ss, main_sig);
174 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175}
176
177static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179static unsigned int started, idle, wanted;
180
181/* worker threads management */
182static mutex_t wrklock = MUTEX_INIT;
183
184typedef struct worker {
185 /* locked by wrklock */
186 struct worker *prev, *next;
187
188 thread_t tid;
189
190 /* locked by reslock, reqlock or wrklock */
191 aio_req req; /* currently processed request */
192 void *dbuf;
193 DIR *dirp;
194} worker;
195
196static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198static void worker_clear (worker *wrk)
199{
200 if (wrk->dirp)
201 { 212 {
202 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) */
203 wrk->dirp = 0; 214 char scratch[3072];
204 } 215 struct fiemap *incmap = (struct fiemap *)scratch;
205 216
206 if (wrk->dbuf) 217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207 { 218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208 free (wrk->dbuf); 219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209 wrk->dbuf = 0; 220 incmap->fm_flags = fiemap->fm_flags;
210 } 221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211}
212 222
213static void worker_free (worker *wrk) 223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
214{
215 wrk->next->prev = wrk->prev;
216 wrk->prev->next = wrk->next;
217
218 free (wrk);
219}
220
221static volatile unsigned int nreqs, nready, npending;
222static volatile unsigned int max_idle = 4;
223static volatile unsigned int max_outstanding = 0xffffffff;
224static int respipe [2];
225
226static mutex_t reslock = MUTEX_INIT;
227static mutex_t reqlock = MUTEX_INIT;
228static cond_t reqwait = COND_INIT;
229
230#if WORDACCESS_UNSAFE
231
232static unsigned int get_nready ()
233{
234 unsigned int retval;
235
236 LOCK (reqlock);
237 retval = nready;
238 UNLOCK (reqlock);
239
240 return retval;
241}
242
243static unsigned int get_npending ()
244{
245 unsigned int retval;
246
247 LOCK (reslock);
248 retval = npending;
249 UNLOCK (reslock);
250
251 return retval;
252}
253
254static unsigned int get_nthreads ()
255{
256 unsigned int retval;
257
258 LOCK (wrklock);
259 retval = started;
260 UNLOCK (wrklock);
261
262 return retval;
263}
264
265#else
266
267# define get_nready() nready
268# define get_npending() npending
269# define get_nthreads() started
270
271#endif
272
273/*
274 * a somewhat faster data structure might be nice, but
275 * with 8 priorities this actually needs <20 insns
276 * per shift, the most expensive operation.
277 */
278typedef struct {
279 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280 int size;
281} reqq;
282
283static reqq req_queue;
284static reqq res_queue;
285
286int reqq_push (reqq *q, aio_req req)
287{
288 int pri = req->pri;
289 req->next = 0;
290
291 if (q->qe[pri])
292 {
293 q->qe[pri]->next = req;
294 q->qe[pri] = req;
295 }
296 else
297 q->qe[pri] = q->qs[pri] = req;
298
299 return q->size++;
300}
301
302aio_req reqq_shift (reqq *q)
303{
304 int pri;
305
306 if (!q->size)
307 return 0; 224 return;
308 225
309 --q->size; 226 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
310 227 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
311 for (pri = NUM_PRI; pri--; ) 228 errno = ENOMEM;
312 {
313 aio_req req = q->qs[pri];
314
315 if (req) 229 if (!fiemap)
230 return;
231
232 req->ptr1 = fiemap;
233
234 for (count = 0; count < incmap->fm_mapped_extents; ++count)
316 { 235 {
317 if (!(q->qs[pri] = req->next)) 236 struct fiemap_extent *e = incmap->fm_extents + count;
318 q->qe[pri] = 0;
319 237
320 return req; 238 if (e->fe_logical + e->fe_length >= end_offset)
239 goto done;
240
241 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
242
243 if (e->fe_flags & FIEMAP_EXTENT_LAST)
244 goto done;
245
321 } 246 }
322 } 247 }
323 248
324 abort (); 249done:
325} 250 req->result = 0;
326 251
327static int poll_cb (); 252#else
328static int req_invoke (aio_req req); 253 errno = ENOSYS;
254#endif
255}
256
257/*****************************************************************************/
258
259enum {
260 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
261};
262
263typedef eio_req *aio_req;
264typedef eio_req *aio_req_ornot;
265typedef eio_wd aio_wd;
266
267static SV *on_next_submit;
268static int next_pri = EIO_PRI_DEFAULT;
269static int max_outstanding;
270
271static s_epipe respipe;
272
329static void req_destroy (aio_req req); 273static void req_destroy (aio_req req);
330static void req_cancel (aio_req req); 274static void req_cancel (aio_req req);
331 275
276static void
277want_poll (void)
278{
279 /* write a dummy byte to the pipe so fh becomes ready */
280 s_epipe_signal (&respipe);
281}
282
283static void
284done_poll (void)
285{
286 /* read any signals sent by the worker threads */
287 s_epipe_drain (&respipe);
288}
289
332/* must be called at most once */ 290/* must be called at most once */
333static SV *req_sv (aio_req req, const char *klass) 291static SV *
292req_sv (aio_req req, HV *stash)
334{ 293{
335 if (!req->self) 294 if (!req->self)
336 { 295 {
337 req->self = (SV *)newHV (); 296 req->self = (SV *)newHV ();
338 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 297 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339 } 298 }
340 299
341 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 300 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342} 301}
343 302
344static aio_req SvAIO_REQ (SV *sv) 303static SV *
304newSVaio_wd (aio_wd wd)
305{
306 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
307}
308
309static aio_req
310SvAIO_REQ (SV *sv)
345{ 311{
346 MAGIC *mg; 312 MAGIC *mg;
347 313
348 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 314 if (!SvROK (sv)
315 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
316 || (SvSTASH (SvRV (sv)) != aio_grp_stash
317 && SvSTASH (SvRV (sv)) != aio_req_stash
318 && !sv_derived_from (sv, "IO::AIO::REQ")))
349 croak ("object of class " AIO_REQ_KLASS " expected"); 319 croak ("object of class IO::AIO::REQ expected");
350 320
351 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 321 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352 322
353 return mg ? (aio_req)mg->mg_ptr : 0; 323 return mg ? (aio_req)mg->mg_ptr : 0;
354} 324}
355 325
326static aio_wd
327SvAIO_WD (SV *sv)
328{
329 if (!SvROK (sv)
330 || SvTYPE (SvRV (sv)) != SVt_PVMG
331 || SvSTASH (SvRV (sv)) != aio_wd_stash)
332 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
333
334 return (aio_wd)(long)SvIVX (SvRV (sv));
335}
336
337static void
356static void aio_grp_feed (aio_req grp) 338aio_grp_feed (aio_req grp)
357{ 339{
358 block_sig (); 340 if (grp->sv2 && SvOK (grp->sv2))
359
360 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361 { 341 {
362 int old_len = grp->size;
363
364 if (grp->sv2 && SvOK (grp->sv2))
365 {
366 dSP; 342 dSP;
367 343
368 ENTER; 344 ENTER;
369 SAVETMPS; 345 SAVETMPS;
370 PUSHMARK (SP); 346 PUSHMARK (SP);
371 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 347 XPUSHs (req_sv (grp, aio_grp_stash));
372 PUTBACK; 348 PUTBACK;
373 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 349 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374 SPAGAIN; 350 SPAGAIN;
375 FREETMPS; 351 FREETMPS;
376 LEAVE; 352 LEAVE;
377 }
378
379 /* stop if no progress has been made */
380 if (old_len == grp->size)
381 {
382 SvREFCNT_dec (grp->sv2);
383 grp->sv2 = 0;
384 break;
385 }
386 } 353 }
387
388 unblock_sig ();
389} 354}
390 355
391static void aio_grp_dec (aio_req grp) 356static void
357req_submit (eio_req *req)
392{ 358{
393 --grp->size; 359 eio_submit (req);
394 360
395 /* call feeder, if applicable */ 361 if (expect_false (on_next_submit))
396 aio_grp_feed (grp);
397
398 /* finish, if done */
399 if (!grp->size && grp->int1)
400 { 362 {
401 block_sig (); 363 dSP;
364 SV *cb = sv_2mortal (on_next_submit);
402 365
403 if (!req_invoke (grp)) 366 on_next_submit = 0;
404 {
405 req_destroy (grp);
406 unblock_sig ();
407 croak (0);
408 }
409 367
410 req_destroy (grp); 368 PUSHMARK (SP);
411 unblock_sig (); 369 PUTBACK;
370 call_sv (cb, G_DISCARD | G_EVAL);
412 } 371 }
413} 372}
414 373
374static int
415static int req_invoke (aio_req req) 375req_invoke (eio_req *req)
416{ 376{
417 dSP;
418
419 if (req->flags & FLAG_SV2_RO_OFF) 377 if (req->flags & FLAG_SV2_RO_OFF)
420 SvREADONLY_off (req->sv2); 378 SvREADONLY_off (req->sv2);
421 379
422 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 380 if (!EIO_CANCELLED (req) && req->callback)
423 { 381 {
382 dSP;
383 static SV *sv_result_cache; /* caches the result integer SV */
384 SV *sv_result;
385
424 ENTER; 386 ENTER;
425 SAVETMPS; 387 SAVETMPS;
426 PUSHMARK (SP); 388 PUSHMARK (SP);
427 EXTEND (SP, 1); 389 EXTEND (SP, 1);
428 390
391 /* do not recreate the result IV from scratch each time */
392 if (expect_true (sv_result_cache))
393 {
394 sv_result = sv_result_cache; sv_result_cache = 0;
395 SvIV_set (sv_result, req->result);
396 SvIOK_only (sv_result);
397 }
398 else
399 {
400 sv_result = newSViv (req->result);
401 SvREADONLY_on (sv_result);
402 }
403
429 switch (req->type) 404 switch (req->type)
430 { 405 {
406 case EIO_WD_OPEN:
407 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
408 break;
409
431 case REQ_READDIR: 410 case EIO_READDIR:
432 { 411 {
433 SV *rv = &PL_sv_undef; 412 SV *rv = &PL_sv_undef;
434 413
435 if (req->result >= 0) 414 if (req->result >= 0)
436 { 415 {
437 int i; 416 int i;
438 char *buf = req->ptr2; 417 char *names = (char *)req->ptr2;
418 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439 AV *av = newAV (); 419 AV *av = newAV ();
440 420
441 av_extend (av, req->result - 1); 421 av_extend (av, req->result - 1);
442 422
443 for (i = 0; i < req->result; ++i) 423 for (i = 0; i < req->result; ++i)
444 { 424 {
445 SV *sv = newSVpv (buf, 0); 425 if (req->int1 & EIO_READDIR_DENTS)
426 {
427 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446 428
429 if (req->int1 & EIO_READDIR_CUSTOM2)
430 {
431 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
432 AV *avent = newAV ();
433
434 av_extend (avent, 2);
435
436 if (!sv_type [ent->type])
437 {
438 sv_type [ent->type] = newSViv (ent->type);
439 SvREADONLY_on (sv_type [ent->type]);
440 }
441
442 av_store (avent, 0, namesv);
443 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
444 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
445
446 av_store (av, i, newRV_noinc ((SV *)avent));
447 }
448 else
447 av_store (av, i, sv); 449 av_store (av, i, namesv);
450
451 ++ent;
452 }
453 else
454 {
455 SV *name = newSVpv (names, 0);
456 av_store (av, i, name);
448 buf += SvCUR (sv) + 1; 457 names += SvCUR (name) + 1;
458 }
449 } 459 }
450 460
451 rv = sv_2mortal (newRV_noinc ((SV *)av)); 461 rv = sv_2mortal (newRV_noinc ((SV *)av));
452 } 462 }
453 463
454 PUSHs (rv); 464 PUSHs (rv);
465
466 if (req->int1 & EIO_READDIR_CUSTOM1)
467 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455 } 468 }
456 break; 469 break;
457 470
458 case REQ_OPEN: 471 case EIO_OPEN:
459 { 472 {
460 /* convert fd to fh */ 473 /* convert fd to fh */
461 SV *fh; 474 SV *fh = &PL_sv_undef;
462 475
463 PUSHs (sv_2mortal (newSViv (req->result))); 476 if (req->result >= 0)
464 PUTBACK; 477 {
465 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 478 GV *gv = (GV *)sv_newmortal ();
466 SPAGAIN; 479 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
480 char sym [64];
481 int symlen;
482
483 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
484 gv_init (gv, aio_stash, sym, symlen, 0);
467 485
468 fh = POPs; 486 symlen = snprintf (
469 PUSHMARK (SP); 487 sym,
488 sizeof (sym),
489 "%s&=%d",
490 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
491 (int)req->result
492 );
493
494 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
495 fh = (SV *)gv;
496 }
497
470 XPUSHs (fh); 498 PUSHs (fh);
471 } 499 }
472 break; 500 break;
473 501
502 case EIO_STATVFS:
503 case EIO_FSTATVFS:
504 {
505 SV *rv = &PL_sv_undef;
506
507#ifndef _WIN32
508 if (req->result >= 0)
509 {
510 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
511 HV *hv = newHV ();
512
513 rv = sv_2mortal (newRV_noinc ((SV *)hv));
514
515 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
516 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
517 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
518 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
519 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
520 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
521 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
522 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
523 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
524 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
525 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
526 }
527#endif
528
529 PUSHs (rv);
530 }
531
532 break;
533
474 case REQ_GROUP: 534 case EIO_GROUP:
475 req->int1 = 2; /* mark group as finished */ 535 req->int1 = 2; /* mark group as finished */
476 536
477 if (req->sv1) 537 if (req->sv1)
478 { 538 {
479 int i; 539 int i;
… …
483 for (i = 0; i <= AvFILL (av); ++i) 543 for (i = 0; i <= AvFILL (av); ++i)
484 PUSHs (*av_fetch (av, i, 0)); 544 PUSHs (*av_fetch (av, i, 0));
485 } 545 }
486 break; 546 break;
487 547
488 case REQ_NOP: 548 case EIO_NOP:
489 case REQ_BUSY: 549 case EIO_BUSY:
490 break; 550 break;
491 551
492 case REQ_READLINK: 552 case EIO_READLINK:
553 case EIO_REALPATH:
493 if (req->result > 0) 554 if (req->result > 0)
555 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
556 break;
557
558 case EIO_STAT:
559 case EIO_LSTAT:
560 case EIO_FSTAT:
561 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
562
563 if (!(PL_laststatval = req->result))
564 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
565 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
566
567 PUSHs (sv_result);
568 break;
569
570 case EIO_SEEK:
571 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
572 break;
573
574 case EIO_READ:
575 {
576 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
577 *SvEND (req->sv2) = 0;
578 SvPOK_only (req->sv2);
579 SvSETMAGIC (req->sv2);
580 PUSHs (sv_result);
581 }
582 break;
583
584 case EIO_CUSTOM:
585 if (req->feed == fiemap)
494 { 586 {
495 SvCUR_set (req->sv2, req->result); 587#if HAVE_FIEMAP
496 *SvEND (req->sv2) = 0;
497 PUSHs (req->sv2); 588 if (!req->result)
589 {
590 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
591
592 if (fiemap->fm_extent_count)
593 {
594 AV *av = newAV ();
595 int i;
596
597 while (fiemap->fm_mapped_extents)
598 {
599 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
600 AV *ext_av = newAV ();
601
602 av_store (ext_av, 3, newSVuv (extent->fe_flags));
603 av_store (ext_av, 2, newSVval64 (extent->fe_length));
604 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
605 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
606
607 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
608 }
609
610 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
611 }
612 else
613 {
614 SvIV_set (sv_result, fiemap->fm_mapped_extents);
615 PUSHs (sv_result);
616 }
617 }
618#endif
498 } 619 }
620 else
621 PUSHs (sv_result);
499 break; 622 break;
500 623
501 case REQ_STAT: 624 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502 case REQ_LSTAT: 625 if (req->result > 0)
503 case REQ_FSTAT: 626 SvIV_set (sv_result, 0);
504 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 627 /* FALLTHROUGH */
505 PL_laststatval = req->result;
506 PL_statcache = *(Stat_t *)(req->ptr2);
507 PUSHs (sv_2mortal (newSViv (req->result)));
508 break;
509
510 case REQ_READ:
511 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512 *SvEND (req->sv2) = 0;
513 PUSHs (sv_2mortal (newSViv (req->result)));
514 break;
515 628
516 default: 629 default:
517 PUSHs (sv_2mortal (newSViv (req->result))); 630 PUSHs (sv_result);
518 break; 631 break;
519 } 632 }
520 633
521 errno = req->errorno; 634 errno = req->errorno;
522 635
523 PUTBACK; 636 PUTBACK;
524 call_sv (req->callback, G_VOID | G_EVAL); 637 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525 SPAGAIN; 638 SPAGAIN;
639
640 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
641 SvREFCNT_dec (sv_result);
642 else
643 sv_result_cache = sv_result;
526 644
527 FREETMPS; 645 FREETMPS;
528 LEAVE; 646 LEAVE;
647
648 PUTBACK;
529 } 649 }
530 650
531 if (req->grp)
532 {
533 aio_req grp = req->grp;
534
535 /* unlink request */
536 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539 if (grp->grp_first == req)
540 grp->grp_first = req->grp_next;
541
542 aio_grp_dec (grp);
543 }
544
545 return !SvTRUE (ERRSV); 651 return !!SvTRUE (ERRSV);
546} 652}
547 653
654static void
548static void req_destroy (aio_req req) 655req_destroy (aio_req req)
549{ 656{
550 if (req->self) 657 if (req->self)
551 { 658 {
552 sv_unmagic (req->self, PERL_MAGIC_ext); 659 sv_unmagic (req->self, PERL_MAGIC_ext);
553 SvREFCNT_dec (req->self); 660 SvREFCNT_dec (req->self);
554 } 661 }
555 662
556 SvREFCNT_dec (req->sv1); 663 SvREFCNT_dec (req->sv1);
557 SvREFCNT_dec (req->sv2); 664 SvREFCNT_dec (req->sv2);
665 SvREFCNT_dec (req->sv3);
666 SvREFCNT_dec (req->sv4);
558 SvREFCNT_dec (req->callback); 667 SvREFCNT_dec (req->callback);
559 668
560 if (req->flags & FLAG_PTR2_FREE)
561 free (req->ptr2);
562
563 Safefree (req); 669 free (req);
564} 670}
565 671
672static void
566static void req_cancel_subs (aio_req grp) 673req_cancel_subs (aio_req grp)
567{ 674{
568 aio_req sub;
569
570 if (grp->type != REQ_GROUP) 675 if (grp->type != EIO_GROUP)
571 return; 676 return;
572 677
573 SvREFCNT_dec (grp->sv2); 678 SvREFCNT_dec (grp->sv2);
574 grp->sv2 = 0; 679 grp->sv2 = 0;
575 680
576 for (sub = grp->grp_first; sub; sub = sub->grp_next) 681 eio_grp_cancel (grp);
577 req_cancel (sub);
578} 682}
579 683
580static void req_cancel (aio_req req) 684static void ecb_cold
685create_respipe (void)
581{ 686{
582 req->flags |= FLAG_CANCELLED; 687 if (s_epipe_renew (&respipe))
583 688 croak ("IO::AIO: unable to initialize result pipe");
584 req_cancel_subs (req);
585} 689}
586 690
587static void *aio_proc (void *arg); 691static void
588 692poll_wait (void)
589static void start_thread (void)
590{ 693{
591 worker *wrk = calloc (1, sizeof (worker));
592
593 if (!wrk)
594 croak ("unable to allocate worker thread data");
595
596 LOCK (wrklock);
597
598 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599 {
600 wrk->prev = &wrk_first;
601 wrk->next = wrk_first.next;
602 wrk_first.next->prev = wrk;
603 wrk_first.next = wrk;
604 ++started;
605 }
606 else
607 free (wrk);
608
609 UNLOCK (wrklock);
610}
611
612static void maybe_start_thread ()
613{
614 if (get_nthreads () >= wanted)
615 return;
616
617 /* todo: maybe use idle here, but might be less exact */
618 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619 return;
620
621 start_thread ();
622}
623
624static void req_send (aio_req req)
625{
626 block_sig ();
627
628 ++nreqs;
629
630 LOCK (reqlock);
631 ++nready;
632 reqq_push (&req_queue, req);
633 COND_SIGNAL (reqwait);
634 UNLOCK (reqlock);
635
636 unblock_sig ();
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 COND_SIGNAL (reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 694 while (eio_nreqs ())
687 { 695 {
688 int size; 696 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 697
698 X_LOCK (reslock);
690 size = res_queue.size; 699 size = res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 700 X_UNLOCK (reslock);
692 701
693 if (size) 702 if (size)
694 return; 703 return;
695 704
696 maybe_start_thread (); 705 etp_maybe_start_thread ();
697 706
698 FD_ZERO(&rfd); 707 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 708 }
703} 709}
704 710
705static int poll_cb () 711static int
712poll_cb (void)
706{ 713{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 block_sig ();
718
719 for (;;) 714 for (;;)
720 { 715 {
721 for (;;) 716 int res = eio_poll ();
717
718 if (res > 0)
719 croak (0);
720
721 if (!max_outstanding || max_outstanding > eio_nreqs ())
722 return res;
723
724 poll_wait ();
725 }
726}
727
728static void ecb_cold
729reinit (void)
730{
731 create_respipe ();
732
733 if (eio_init (want_poll, done_poll) < 0)
734 croak ("IO::AIO: unable to initialise eio library");
735}
736
737/*****************************************************************************/
738
739#if !_POSIX_MAPPED_FILES
740# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
741# define munmap(addr,length) EIO_ENOSYS ()
742#endif
743
744#if !_POSIX_MEMORY_PROTECTION
745# define mprotect(addr,len,prot) EIO_ENOSYS ()
746# define PROT_NONE 0
747# define PROT_WRITE 0
748# define MAP_PRIVATE 0
749# define MAP_SHARED 0
750# define MAP_FIXED 0
751#endif
752
753#define MMAP_MAGIC PERL_MAGIC_ext
754
755static int ecb_cold
756mmap_free (pTHX_ SV *sv, MAGIC *mg)
757{
758 int old_errno = errno;
759 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
760 errno = old_errno;
761
762 mg->mg_obj = 0; /* just in case */
763
764 SvREADONLY_off (sv);
765
766 if (SvPVX (sv) != mg->mg_ptr)
767 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
768
769 SvCUR_set (sv, 0);
770 SvPVX (sv) = 0;
771 SvOK_off (sv);
772
773 return 0;
774}
775
776static MGVTBL mmap_vtbl = {
777 0, 0, 0, 0, mmap_free
778};
779
780/*****************************************************************************/
781
782static SV *
783get_cb (SV *cb_sv)
784{
785 SvGETMAGIC (cb_sv);
786 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
787}
788
789static aio_req ecb_noinline
790dreq (SV *callback)
791{
792 SV *cb_cv;
793 aio_req req;
794 int req_pri = next_pri;
795 next_pri = EIO_PRI_DEFAULT;
796
797 cb_cv = get_cb (callback);
798
799 req = calloc (sizeof (*req), 1);
800 if (!req)
801 croak ("out of memory during eio_req allocation");
802
803 req->callback = SvREFCNT_inc (cb_cv);
804 req->pri = req_pri;
805
806 return req;
807}
808
809#define dREQ \
810 aio_req req = dreq (callback); \
811
812#define REQ_SEND \
813 PUTBACK; \
814 req_submit (req); \
815 SPAGAIN; \
816 \
817 if (GIMME_V != G_VOID) \
818 XPUSHs (req_sv (req, aio_req_stash));
819
820ecb_inline void
821req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
822{
823 if (expect_false (SvROK (path)))
824 {
825 SV *rv = SvRV (path);
826 SV *wdob;
827
828 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722 { 829 {
723 maybe_start_thread (); 830 path = AvARRAY (rv)[1];
831 wdob = AvARRAY (rv)[0];
724 832
725 LOCK (reslock); 833 if (SvOK (wdob))
726 req = reqq_shift (&res_queue);
727
728 if (req)
729 { 834 {
730 --npending; 835 *wd = SvAIO_WD (wdob);
731 836 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
732 if (!res_queue.size)
733 {
734 /* read any signals sent by the worker threads */
735 char buf [4];
736 while (read (respipe [0], buf, 4) == 4)
737 ;
738 }
739 }
740
741 UNLOCK (reslock);
742
743 if (!req)
744 break;
745
746 --nreqs;
747
748 if (req->type == REQ_GROUP && req->size)
749 {
750 req->int1 = 1; /* mark request as delayed */
751 continue;
752 } 837 }
753 else 838 else
754 { 839 *wd = EIO_INVALID_WD;
755 if (!req_invoke (req))
756 {
757 req_destroy (req);
758 unblock_sig ();
759 croak (0);
760 }
761
762 count++;
763 }
764
765 req_destroy (req);
766
767 if (maxreqs && !--maxreqs)
768 break;
769
770 if (max_poll_time)
771 {
772 gettimeofday (&tv_now, 0);
773
774 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775 break;
776 }
777 } 840 }
841 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
842 {
843 *wd = (aio_wd)(long)SvIVX (rv);
844 *wdsv = SvREFCNT_inc_NN (rv);
845 *ptr = ".";
846 return; /* path set to "." */
847 }
848 else
849 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
850 }
778 851
779 if (nreqs <= max_outstanding) 852 *pathsv = newSVsv (path);
853 *ptr = SvPVbyte_nolen (*pathsv);
854}
855
856static void ecb_noinline
857req_set_path1 (aio_req req, SV *path)
858{
859 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
860}
861
862static void ecb_noinline
863req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
864{
865 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
866
867 switch (SvTYPE (rv))
868 {
869 case SVt_PVIO:
870 case SVt_PVLV:
871 case SVt_PVGV:
872 req->type = type_fh;
873 req->sv1 = newSVsv (fh_or_path);
874 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780 break; 875 break;
781 876
782 poll_wait (); 877 default:
783 878 req->type = type_path;
784 ++maxreqs; 879 req_set_path1 (req, fh_or_path);
880 break;
785 } 881 }
786
787 unblock_sig ();
788 return count;
789} 882}
790 883
791static void create_pipe () 884XS(boot_IO__AIO) ecb_cold;
792{
793 if (pipe (respipe))
794 croak ("unable to initialize result pipe");
795 885
796 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797 croak ("cannot set result pipe to nonblocking mode");
798
799 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800 croak ("cannot set result pipe to nonblocking mode");
801}
802
803/*****************************************************************************/
804/* work around various missing functions */
805
806#if !HAVE_PREADWRITE
807# define pread aio_pread
808# define pwrite aio_pwrite
809
810/*
811 * make our pread/pwrite safe against themselves, but not against
812 * normal read/write by using a mutex. slows down execution a lot,
813 * but that's your problem, not mine.
814 */
815static mutex_t preadwritelock = MUTEX_INIT;
816
817static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818{
819 ssize_t res;
820 off_t ooffset;
821
822 LOCK (preadwritelock);
823 ooffset = lseek (fd, 0, SEEK_CUR);
824 lseek (fd, offset, SEEK_SET);
825 res = read (fd, buf, count);
826 lseek (fd, ooffset, SEEK_SET);
827 UNLOCK (preadwritelock);
828
829 return res;
830}
831
832static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833{
834 ssize_t res;
835 off_t ooffset;
836
837 LOCK (preadwritelock);
838 ooffset = lseek (fd, 0, SEEK_CUR);
839 lseek (fd, offset, SEEK_SET);
840 res = write (fd, buf, count);
841 lseek (fd, offset, SEEK_SET);
842 UNLOCK (preadwritelock);
843
844 return res;
845}
846#endif
847
848#ifndef HAVE_FUTIMES
849
850# define utimes(path,times) aio_utimes (path, times)
851# define futimes(fd,times) aio_futimes (fd, times)
852
853int aio_utimes (const char *filename, const struct timeval times[2])
854{
855 if (times)
856 {
857 struct utimbuf buf;
858
859 buf.actime = times[0].tv_sec;
860 buf.modtime = times[1].tv_sec;
861
862 return utime (filename, &buf);
863 }
864 else
865 return utime (filename, 0);
866}
867
868int aio_futimes (int fd, const struct timeval tv[2])
869{
870 errno = ENOSYS;
871 return -1;
872}
873
874#endif
875
876#if !HAVE_FDATASYNC
877# define fdatasync fsync
878#endif
879
880#if !HAVE_READAHEAD
881# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884{
885 dBUF;
886
887 while (count > 0)
888 {
889 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891 pread (fd, aio_buf, len, offset);
892 offset += len;
893 count -= len;
894 }
895
896 errno = 0;
897}
898
899#endif
900
901#if !HAVE_READDIR_R
902# define readdir_r aio_readdir_r
903
904static mutex_t readdirlock = MUTEX_INIT;
905
906static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907{
908 struct dirent *e;
909 int errorno;
910
911 LOCK (readdirlock);
912
913 e = readdir (dirp);
914 errorno = errno;
915
916 if (e)
917 {
918 *res = ent;
919 strcpy (ent->d_name, e->d_name);
920 }
921 else
922 *res = 0;
923
924 UNLOCK (readdirlock);
925
926 errno = errorno;
927 return e ? 0 : -1;
928}
929#endif
930
931/* sendfile always needs emulation */
932static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933{
934 ssize_t res;
935
936 if (!count)
937 return 0;
938
939#if HAVE_SENDFILE
940# if __linux
941 res = sendfile (ofd, ifd, &offset, count);
942
943# elif __freebsd
944 /*
945 * Of course, the freebsd sendfile is a dire hack with no thoughts
946 * wasted on making it similar to other I/O functions.
947 */
948 {
949 off_t sbytes;
950 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952 if (res < 0 && sbytes)
953 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954 res = sbytes;
955 }
956
957# elif __hpux
958 res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960# elif __solaris
961 {
962 struct sendfilevec vec;
963 size_t sbytes;
964
965 vec.sfv_fd = ifd;
966 vec.sfv_flag = 0;
967 vec.sfv_off = offset;
968 vec.sfv_len = count;
969
970 res = sendfilev (ofd, &vec, 1, &sbytes);
971
972 if (res < 0 && sbytes)
973 res = sbytes;
974 }
975
976# endif
977#else
978 res = -1;
979 errno = ENOSYS;
980#endif
981
982 if (res < 0
983 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984#if __solaris
985 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
986#endif
987 )
988 )
989 {
990 /* emulate sendfile. this is a major pain in the ass */
991 dBUF;
992
993 res = 0;
994
995 while (count)
996 {
997 ssize_t cnt;
998
999 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001 if (cnt <= 0)
1002 {
1003 if (cnt && !res) res = -1;
1004 break;
1005 }
1006
1007 cnt = write (ofd, aio_buf, cnt);
1008
1009 if (cnt <= 0)
1010 {
1011 if (cnt && !res) res = -1;
1012 break;
1013 }
1014
1015 offset += cnt;
1016 res += cnt;
1017 count -= cnt;
1018 }
1019 }
1020
1021 return res;
1022}
1023
1024/* read a full directory */
1025static void scandir_ (aio_req req, worker *self)
1026{
1027 DIR *dirp;
1028 union
1029 {
1030 struct dirent d;
1031 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032 } *u;
1033 struct dirent *entp;
1034 char *name, *names;
1035 int memlen = 4096;
1036 int memofs = 0;
1037 int res = 0;
1038 int errorno;
1039
1040 LOCK (wrklock);
1041 self->dirp = dirp = opendir (req->ptr1);
1042 self->dbuf = u = malloc (sizeof (*u));
1043 req->flags |= FLAG_PTR2_FREE;
1044 req->ptr2 = names = malloc (memlen);
1045 UNLOCK (wrklock);
1046
1047 if (dirp && u && names)
1048 for (;;)
1049 {
1050 errno = 0;
1051 readdir_r (dirp, &u->d, &entp);
1052
1053 if (!entp)
1054 break;
1055
1056 name = entp->d_name;
1057
1058 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059 {
1060 int len = strlen (name) + 1;
1061
1062 res++;
1063
1064 while (memofs + len > memlen)
1065 {
1066 memlen *= 2;
1067 LOCK (wrklock);
1068 req->ptr2 = names = realloc (names, memlen);
1069 UNLOCK (wrklock);
1070
1071 if (!names)
1072 break;
1073 }
1074
1075 memcpy (names + memofs, name, len);
1076 memofs += len;
1077 }
1078 }
1079
1080 if (errno)
1081 res = -1;
1082
1083 req->result = res;
1084}
1085
1086/*****************************************************************************/
1087
1088static void *aio_proc (void *thr_arg)
1089{
1090 aio_req req;
1091 struct timespec ts;
1092 worker *self = (worker *)thr_arg;
1093
1094 /* try to distribute timeouts somewhat evenly */
1095 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096 * (1000000000UL / 1024UL);
1097
1098 for (;;)
1099 {
1100 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102 LOCK (reqlock);
1103
1104 for (;;)
1105 {
1106 self->req = req = reqq_shift (&req_queue);
1107
1108 if (req)
1109 break;
1110
1111 ++idle;
1112
1113 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114 == ETIMEDOUT)
1115 {
1116 if (idle > max_idle)
1117 {
1118 --idle;
1119 UNLOCK (reqlock);
1120 LOCK (wrklock);
1121 --started;
1122 UNLOCK (wrklock);
1123 goto quit;
1124 }
1125
1126 /* we are allowed to idle, so do so without any timeout */
1127 COND_WAIT (reqwait, reqlock);
1128 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129 }
1130
1131 --idle;
1132 }
1133
1134 --nready;
1135
1136 UNLOCK (reqlock);
1137
1138 errno = 0; /* strictly unnecessary */
1139
1140 if (!(req->flags & FLAG_CANCELLED))
1141 switch (req->type)
1142 {
1143 case REQ_READ: req->result = req->offs >= 0
1144 ? pread (req->int1, req->ptr1, req->size, req->offs)
1145 : read (req->int1, req->ptr1, req->size); break;
1146 case REQ_WRITE: req->result = req->offs >= 0
1147 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148 : write (req->int1, req->ptr1, req->size); break;
1149
1150 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163 case REQ_CLOSE: req->result = close (req->int1); break;
1164 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174 case REQ_FSYNC: req->result = fsync (req->int1); break;
1175 case REQ_READDIR: scandir_ (req, self); break;
1176
1177 case REQ_BUSY:
1178 {
1179 struct timeval tv;
1180
1181 tv.tv_sec = req->nv1;
1182 tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184 req->result = select (0, 0, 0, 0, &tv);
1185 }
1186
1187 case REQ_UTIME:
1188 case REQ_FUTIME:
1189 {
1190 struct timeval tv[2];
1191 struct timeval *times;
1192
1193 if (req->nv1 != -1. || req->nv2 != -1.)
1194 {
1195 tv[0].tv_sec = req->nv1;
1196 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197 tv[1].tv_sec = req->nv2;
1198 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200 times = tv;
1201 }
1202 else
1203 times = 0;
1204
1205
1206 req->result = req->type == REQ_FUTIME
1207 ? futimes (req->int1, times)
1208 : utimes (req->ptr1, times);
1209 }
1210
1211 case REQ_GROUP:
1212 case REQ_NOP:
1213 break;
1214
1215 case REQ_QUIT:
1216 goto quit;
1217
1218 default:
1219 req->result = -1;
1220 break;
1221 }
1222
1223 req->errorno = errno;
1224
1225 LOCK (reslock);
1226
1227 ++npending;
1228
1229 if (!reqq_push (&res_queue, req))
1230 {
1231 /* write a dummy byte to the pipe so fh becomes ready */
1232 write (respipe [1], &respipe, 1);
1233
1234 /* optionally signal the main thread asynchronously */
1235 if (main_sig)
1236 pthread_kill (main_tid, main_sig);
1237 }
1238
1239 self->req = 0;
1240 worker_clear (self);
1241
1242 UNLOCK (reslock);
1243 }
1244
1245quit:
1246 LOCK (wrklock);
1247 worker_free (self);
1248 UNLOCK (wrklock);
1249
1250 return 0;
1251}
1252
1253/*****************************************************************************/
1254
1255static void atfork_prepare (void)
1256{
1257 LOCK (wrklock);
1258 LOCK (reqlock);
1259 LOCK (reslock);
1260#if !HAVE_PREADWRITE
1261 LOCK (preadwritelock);
1262#endif
1263#if !HAVE_READDIR_R
1264 LOCK (readdirlock);
1265#endif
1266}
1267
1268static void atfork_parent (void)
1269{
1270#if !HAVE_READDIR_R
1271 UNLOCK (readdirlock);
1272#endif
1273#if !HAVE_PREADWRITE
1274 UNLOCK (preadwritelock);
1275#endif
1276 UNLOCK (reslock);
1277 UNLOCK (reqlock);
1278 UNLOCK (wrklock);
1279}
1280
1281static void atfork_child (void)
1282{
1283 aio_req prv;
1284
1285 while (prv = reqq_shift (&req_queue))
1286 req_destroy (prv);
1287
1288 while (prv = reqq_shift (&res_queue))
1289 req_destroy (prv);
1290
1291 while (wrk_first.next != &wrk_first)
1292 {
1293 worker *wrk = wrk_first.next;
1294
1295 if (wrk->req)
1296 req_destroy (wrk->req);
1297
1298 worker_clear (wrk);
1299 worker_free (wrk);
1300 }
1301
1302 started = 0;
1303 idle = 0;
1304 nreqs = 0;
1305 nready = 0;
1306 npending = 0;
1307
1308 close (respipe [0]);
1309 close (respipe [1]);
1310 create_pipe ();
1311
1312 atfork_parent ();
1313}
1314
1315#define dREQ \
1316 aio_req req; \
1317 int req_pri = next_pri; \
1318 next_pri = DEFAULT_PRI + PRI_BIAS; \
1319 \
1320 if (SvOK (callback) && !SvROK (callback)) \
1321 croak ("callback must be undef or of reference type"); \
1322 \
1323 Newz (0, req, 1, aio_cb); \
1324 if (!req) \
1325 croak ("out of memory during aio_req allocation"); \
1326 \
1327 req->callback = newSVsv (callback); \
1328 req->pri = req_pri
1329
1330#define REQ_SEND \
1331 req_send (req); \
1332 \
1333 if (GIMME_V != G_VOID) \
1334 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335
1336MODULE = IO::AIO PACKAGE = IO::AIO 886MODULE = IO::AIO PACKAGE = IO::AIO
1337 887
1338PROTOTYPES: ENABLE 888PROTOTYPES: ENABLE
1339 889
1340BOOT: 890BOOT:
1341{ 891{
892 static const struct {
893 const char *name;
894 IV iv;
895 } *civ, const_iv[] = {
896# define const_niv(name, value) { # name, (IV) value },
897# define const_iv(name) { # name, (IV) name },
898# define const_eio(name) { # name, (IV) EIO_ ## name },
899
900 /* you have to re-run ./gendef0 after adding/Removing any constants here */
901
902 const_iv (ENOSYS)
903 const_iv (EXDEV)
904 const_iv (EBADR)
905
906 const_iv (O_RDONLY)
907 const_iv (O_WRONLY)
908 const_iv (O_RDWR)
909 const_iv (O_CREAT)
910 const_iv (O_TRUNC)
911 const_iv (O_EXCL)
912 const_iv (O_APPEND)
913
914 const_iv (O_ASYNC)
915 const_iv (O_DIRECT)
916 const_iv (O_NOATIME)
917
918 const_iv (O_CLOEXEC)
919 const_iv (O_NOCTTY)
920 const_iv (O_NOFOLLOW)
921 const_iv (O_NONBLOCK)
922 const_iv (O_EXEC)
923 const_iv (O_SEARCH)
924 const_iv (O_DIRECTORY)
925 const_iv (O_DSYNC)
926 const_iv (O_RSYNC)
927 const_iv (O_SYNC)
928 const_iv (O_TTY_INIT)
929
930 const_iv (S_IFIFO)
931 const_iv (S_IFCHR)
932 const_iv (S_IFBLK)
933 const_iv (S_IFLNK)
934 const_iv (S_IFREG)
935 const_iv (S_IFDIR)
936 const_iv (S_IFWHT)
937 const_iv (S_IFSOCK)
938 const_iv (S_IFMT)
939
940 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
941 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
942 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
943 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
944 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
945 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
946
947 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
948 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
949 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
950 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
951 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
952
953 const_iv (ST_RDONLY)
954 const_iv (ST_NOSUID)
955 const_iv (ST_NODEV)
956 const_iv (ST_NOEXEC)
957 const_iv (ST_SYNCHRONOUS)
958 const_iv (ST_MANDLOCK)
959 const_iv (ST_WRITE)
960 const_iv (ST_APPEND)
961 const_iv (ST_IMMUTABLE)
962 const_iv (ST_NOATIME)
963 const_iv (ST_NODIRATIME)
964 const_iv (ST_RELATIME)
965
966 const_iv (PROT_NONE)
967 const_iv (PROT_EXEC)
968 const_iv (PROT_READ)
969 const_iv (PROT_WRITE)
970
971 /*const_iv (MAP_FIXED)*/
972 const_iv (MAP_PRIVATE)
973 const_iv (MAP_SHARED)
974 const_iv (MAP_ANONYMOUS)
975
976 /* linuxish */
977 const_iv (MAP_HUGETLB)
978 const_iv (MAP_LOCKED)
979 const_iv (MAP_NORESERVE)
980 const_iv (MAP_POPULATE)
981 const_iv (MAP_NONBLOCK)
982
983 const_iv (FIEMAP_FLAG_SYNC)
984 const_iv (FIEMAP_FLAG_XATTR)
985 const_iv (FIEMAP_FLAGS_COMPAT)
986 const_iv (FIEMAP_EXTENT_LAST)
987 const_iv (FIEMAP_EXTENT_UNKNOWN)
988 const_iv (FIEMAP_EXTENT_DELALLOC)
989 const_iv (FIEMAP_EXTENT_ENCODED)
990 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
991 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
992 const_iv (FIEMAP_EXTENT_DATA_INLINE)
993 const_iv (FIEMAP_EXTENT_DATA_TAIL)
994 const_iv (FIEMAP_EXTENT_UNWRITTEN)
995 const_iv (FIEMAP_EXTENT_MERGED)
996 const_iv (FIEMAP_EXTENT_SHARED)
997
998 const_iv (SPLICE_F_MOVE)
999 const_iv (SPLICE_F_NONBLOCK)
1000 const_iv (SPLICE_F_MORE)
1001 const_iv (SPLICE_F_GIFT)
1002
1003 const_iv (SEEK_DATA)
1004 const_iv (SEEK_HOLE)
1005
1006 /* libeio constants */
1007 const_eio (SEEK_SET)
1008 const_eio (SEEK_CUR)
1009 const_eio (SEEK_END)
1010
1011 const_eio (MCL_FUTURE)
1012 const_eio (MCL_CURRENT)
1013
1014 const_eio (MS_ASYNC)
1015 const_eio (MS_INVALIDATE)
1016 const_eio (MS_SYNC)
1017
1018 const_eio (MT_MODIFY)
1019
1020 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1021 const_eio (SYNC_FILE_RANGE_WRITE)
1022 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1023
1024 const_eio (FALLOC_FL_KEEP_SIZE)
1025 const_eio (FALLOC_FL_PUNCH_HOLE)
1026
1027 const_eio (READDIR_DENTS)
1028 const_eio (READDIR_DIRS_FIRST)
1029 const_eio (READDIR_STAT_ORDER)
1030 const_eio (READDIR_FOUND_UNKNOWN)
1031
1032 const_eio (DT_UNKNOWN)
1033 const_eio (DT_FIFO)
1034 const_eio (DT_CHR)
1035 const_eio (DT_DIR)
1036 const_eio (DT_BLK)
1037 const_eio (DT_REG)
1038 const_eio (DT_LNK)
1039 const_eio (DT_SOCK)
1040 const_eio (DT_WHT)
1041 };
1042
1342 HV *stash = gv_stashpv ("IO::AIO", 1); 1043 aio_stash = gv_stashpv ("IO::AIO" , 1);
1044 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1045 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1046 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1343 1047
1344 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1048 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1345 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1049 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1346 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351 1050
1352 create_pipe (); 1051 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1353 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354}
1355 1052
1053 reinit ();
1054}
1055
1356void 1056void
1057reinit ()
1058 PROTOTYPE:
1059
1060void
1357max_poll_reqs (int nreqs) 1061max_poll_reqs (unsigned int nreqs)
1358 PROTOTYPE: $ 1062 PROTOTYPE: $
1359 CODE: 1063 CODE:
1360 max_poll_reqs = nreqs; 1064 eio_set_max_poll_reqs (nreqs);
1361 1065
1362void 1066void
1363max_poll_time (double nseconds) 1067max_poll_time (double nseconds)
1364 PROTOTYPE: $ 1068 PROTOTYPE: $
1365 CODE: 1069 CODE:
1366 max_poll_time = nseconds * AIO_TICKS; 1070 eio_set_max_poll_time (nseconds);
1367 1071
1368void 1072void
1369min_parallel (int nthreads) 1073min_parallel (unsigned int nthreads)
1370 PROTOTYPE: $
1371
1372void
1373max_parallel (int nthreads)
1374 PROTOTYPE: $
1375
1376void
1377max_idle (int nthreads)
1378 PROTOTYPE: $ 1074 PROTOTYPE: $
1379 CODE: 1075 CODE:
1380 set_max_idle (nthreads); 1076 eio_set_min_parallel (nthreads);
1381 1077
1382int 1078void
1383max_outstanding (int maxreqs) 1079max_parallel (unsigned int nthreads)
1384 PROTOTYPE: $ 1080 PROTOTYPE: $
1385 CODE: 1081 CODE:
1386 RETVAL = max_outstanding; 1082 eio_set_max_parallel (nthreads);
1083
1084void
1085max_idle (unsigned int nthreads)
1086 PROTOTYPE: $
1087 CODE:
1088 eio_set_max_idle (nthreads);
1089
1090void
1091idle_timeout (unsigned int seconds)
1092 PROTOTYPE: $
1093 CODE:
1094 eio_set_idle_timeout (seconds);
1095
1096void
1097max_outstanding (unsigned int maxreqs)
1098 PROTOTYPE: $
1099 CODE:
1387 max_outstanding = maxreqs; 1100 max_outstanding = maxreqs;
1388 OUTPUT: 1101
1389 RETVAL 1102void
1103aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1104 PPCODE:
1105{
1106 dREQ;
1107
1108 req->type = EIO_WD_OPEN;
1109 req_set_path1 (req, pathname);
1110
1111 REQ_SEND;
1112}
1390 1113
1391void 1114void
1392aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1115aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393 PROTOTYPE: $$$;$
1394 PPCODE: 1116 PPCODE:
1395{ 1117{
1396 dREQ; 1118 dREQ;
1397 1119
1398 req->type = REQ_OPEN; 1120 req->type = EIO_OPEN;
1399 req->sv1 = newSVsv (pathname); 1121 req_set_path1 (req, pathname);
1400 req->ptr1 = SvPVbyte_nolen (req->sv1);
1401 req->int1 = flags; 1122 req->int1 = flags;
1402 req->mode = mode; 1123 req->int2 = mode;
1403 1124
1404 REQ_SEND; 1125 REQ_SEND;
1405} 1126}
1406 1127
1407void 1128void
1408aio_close (SV *fh, SV *callback=&PL_sv_undef) 1129aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1409 PROTOTYPE: $;$
1410 ALIAS: 1130 ALIAS:
1411 aio_close = REQ_CLOSE
1412 aio_fsync = REQ_FSYNC 1131 aio_fsync = EIO_FSYNC
1413 aio_fdatasync = REQ_FDATASYNC 1132 aio_fdatasync = EIO_FDATASYNC
1133 aio_syncfs = EIO_SYNCFS
1414 PPCODE: 1134 PPCODE:
1415{ 1135{
1136 int fd = s_fileno_croak (fh, 0);
1416 dREQ; 1137 dREQ;
1417 1138
1418 req->type = ix; 1139 req->type = ix;
1419 req->sv1 = newSVsv (fh); 1140 req->sv1 = newSVsv (fh);
1420 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1141 req->int1 = fd;
1421 1142
1422 REQ_SEND (req); 1143 REQ_SEND;
1144}
1145
1146void
1147aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1148 PPCODE:
1149{
1150 int fd = s_fileno_croak (fh, 0);
1151 dREQ;
1152
1153 req->type = EIO_SYNC_FILE_RANGE;
1154 req->sv1 = newSVsv (fh);
1155 req->int1 = fd;
1156 req->offs = offset;
1157 req->size = nbytes;
1158 req->int2 = flags;
1159
1160 REQ_SEND;
1161}
1162
1163void
1164aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1165 PPCODE:
1166{
1167 int fd = s_fileno_croak (fh, 0);
1168 dREQ;
1169
1170 req->type = EIO_FALLOCATE;
1171 req->sv1 = newSVsv (fh);
1172 req->int1 = fd;
1173 req->int2 = mode;
1174 req->offs = offset;
1175 req->size = len;
1176
1177 REQ_SEND;
1178}
1179
1180void
1181aio_close (SV *fh, SV *callback=&PL_sv_undef)
1182 PPCODE:
1183{
1184 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1185 int fd = s_fileno_croak (fh, 0);
1186 dREQ;
1187
1188 if (expect_false (close_fd < 0))
1189 {
1190 int pipefd [2];
1191
1192 if (
1193#ifdef _WIN32
1194 _pipe (pipefd, 1, _O_BINARY) < 0
1195#else
1196 pipe (pipefd) < 0
1197 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1198#endif
1199 || close (pipefd [1]) < 0
1200 )
1201 abort (); /*D*/
1202
1203 close_fd = pipefd [0];
1204 }
1205
1206 req->type = EIO_DUP2;
1207 req->int1 = close_fd;
1208 req->sv2 = newSVsv (fh);
1209 req->int2 = fd;
1210
1211 REQ_SEND;
1212}
1213
1214void
1215aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1216 PPCODE:
1217{
1218 int fd = s_fileno_croak (fh, 0);
1219 dREQ;
1220
1221 req->type = EIO_SEEK;
1222 req->sv1 = newSVsv (fh);
1223 req->int1 = fd;
1224 req->offs = SvVAL64 (offset);
1225 req->int2 = whence;
1226
1227 REQ_SEND;
1423} 1228}
1424 1229
1425void 1230void
1426aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1231aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1427 ALIAS: 1232 ALIAS:
1428 aio_read = REQ_READ 1233 aio_read = EIO_READ
1429 aio_write = REQ_WRITE 1234 aio_write = EIO_WRITE
1430 PROTOTYPE: $$$$$;$
1431 PPCODE: 1235 PPCODE:
1432{ 1236{
1433 STRLEN svlen; 1237 STRLEN svlen;
1238 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434 char *svptr = SvPVbyte (data, svlen); 1239 char *svptr = SvPVbyte (data, svlen);
1435 UV len = SvUV (length); 1240 UV len = SvUV (length);
1436 1241
1437 SvUPGRADE (data, SVt_PV);
1438 SvPOK_on (data);
1439
1440 if (dataoffset < 0) 1242 if (dataoffset < 0)
1441 dataoffset += svlen; 1243 dataoffset += svlen;
1442 1244
1443 if (dataoffset < 0 || dataoffset > svlen) 1245 if (dataoffset < 0 || dataoffset > svlen)
1444 croak ("dataoffset outside of data scalar"); 1246 croak ("dataoffset outside of data scalar");
1445 1247
1446 if (ix == REQ_WRITE) 1248 if (ix == EIO_WRITE)
1447 { 1249 {
1448 /* write: check length and adjust. */ 1250 /* write: check length and adjust. */
1449 if (!SvOK (length) || len + dataoffset > svlen) 1251 if (!SvOK (length) || len + dataoffset > svlen)
1450 len = svlen - dataoffset; 1252 len = svlen - dataoffset;
1451 } 1253 }
1452 else 1254 else
1453 { 1255 {
1454 /* read: grow scalar as necessary */ 1256 /* read: check type and grow scalar as necessary */
1257 SvUPGRADE (data, SVt_PV);
1258 if (SvLEN (data) >= SvCUR (data))
1455 svptr = SvGROW (data, len + dataoffset + 1); 1259 svptr = SvGROW (data, len + dataoffset + 1);
1260 else if (SvCUR (data) < len + dataoffset)
1261 croak ("length + dataoffset outside of scalar, and cannot grow");
1456 } 1262 }
1457
1458 if (len < 0)
1459 croak ("length must not be negative");
1460 1263
1461 { 1264 {
1462 dREQ; 1265 dREQ;
1463 1266
1464 req->type = ix; 1267 req->type = ix;
1465 req->sv1 = newSVsv (fh); 1268 req->sv1 = newSVsv (fh);
1466 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1269 req->int1 = fd;
1467 : IoOFP (sv_2io (fh)));
1468 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1270 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469 req->size = len; 1271 req->size = len;
1470 req->sv2 = SvREFCNT_inc (data); 1272 req->sv2 = SvREFCNT_inc (data);
1471 req->ptr1 = (char *)svptr + dataoffset; 1273 req->ptr2 = (char *)svptr + dataoffset;
1472 req->stroffset = dataoffset; 1274 req->stroffset = dataoffset;
1473 1275
1474 if (!SvREADONLY (data)) 1276 if (!SvREADONLY (data))
1475 { 1277 {
1476 SvREADONLY_on (data); 1278 SvREADONLY_on (data);
… …
1480 REQ_SEND; 1282 REQ_SEND;
1481 } 1283 }
1482} 1284}
1483 1285
1484void 1286void
1485aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1287aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1486 PROTOTYPE: $$;$ 1288 ALIAS:
1289 aio_readlink = EIO_READLINK
1290 aio_realpath = EIO_REALPATH
1487 PPCODE: 1291 PPCODE:
1488{ 1292{
1489 SV *data;
1490 dREQ; 1293 dREQ;
1491 1294
1492 data = newSV (NAME_MAX);
1493 SvPOK_on (data);
1494
1495 req->type = REQ_READLINK; 1295 req->type = ix;
1496 req->sv1 = newSVsv (path); 1296 req_set_path1 (req, pathname);
1497 req->ptr2 = SvPVbyte_nolen (req->sv1);
1498 req->sv2 = data;
1499 req->ptr1 = SvPVbyte_nolen (data);
1500 1297
1501 REQ_SEND; 1298 REQ_SEND;
1502} 1299}
1503 1300
1504void 1301void
1505aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef) 1302aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1506 PROTOTYPE: $$$$;$
1507 PPCODE: 1303 PPCODE:
1508{ 1304{
1305 int ifd = s_fileno_croak (in_fh , 0);
1306 int ofd = s_fileno_croak (out_fh, 1);
1509 dREQ; 1307 dREQ;
1510 1308
1511 req->type = REQ_SENDFILE; 1309 req->type = EIO_SENDFILE;
1512 req->sv1 = newSVsv (out_fh); 1310 req->sv1 = newSVsv (out_fh);
1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1311 req->int1 = ofd;
1514 req->sv2 = newSVsv (in_fh); 1312 req->sv2 = newSVsv (in_fh);
1515 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1313 req->int2 = ifd;
1516 req->offs = SvVAL64 (in_offset); 1314 req->offs = in_offset;
1517 req->size = length; 1315 req->size = length;
1518 1316
1519 REQ_SEND; 1317 REQ_SEND;
1520} 1318}
1521 1319
1522void 1320void
1523aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef) 1321aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1524 PROTOTYPE: $$$;$
1525 PPCODE: 1322 PPCODE:
1526{ 1323{
1324 int fd = s_fileno_croak (fh, 0);
1527 dREQ; 1325 dREQ;
1528 1326
1529 req->type = REQ_READAHEAD; 1327 req->type = EIO_READAHEAD;
1530 req->sv1 = newSVsv (fh); 1328 req->sv1 = newSVsv (fh);
1531 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1329 req->int1 = fd;
1532 req->offs = SvVAL64 (offset); 1330 req->offs = offset;
1533 req->size = length; 1331 req->size = length;
1534 1332
1535 REQ_SEND; 1333 REQ_SEND;
1536} 1334}
1537 1335
1538void 1336void
1539aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef) 1337aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540 ALIAS: 1338 ALIAS:
1541 aio_stat = REQ_STAT 1339 aio_stat = EIO_STAT
1542 aio_lstat = REQ_LSTAT 1340 aio_lstat = EIO_LSTAT
1341 aio_statvfs = EIO_STATVFS
1543 PPCODE: 1342 PPCODE:
1544{ 1343{
1545 dREQ; 1344 dREQ;
1546 1345
1547 req->ptr2 = malloc (sizeof (Stat_t)); 1346 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1548 if (!req->ptr2)
1549 {
1550 req_destroy (req);
1551 croak ("out of memory during aio_stat statdata allocation");
1552 }
1553
1554 req->flags |= FLAG_PTR2_FREE;
1555 req->sv1 = newSVsv (fh_or_path);
1556
1557 if (SvPOK (fh_or_path))
1558 {
1559 req->type = ix;
1560 req->ptr1 = SvPVbyte_nolen (req->sv1);
1561 }
1562 else
1563 {
1564 req->type = REQ_FSTAT;
1565 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1566 }
1567 1347
1568 REQ_SEND; 1348 REQ_SEND;
1569} 1349}
1350
1351UV
1352major (UV dev)
1353 ALIAS:
1354 minor = 1
1355 CODE:
1356 RETVAL = ix ? major (dev) : minor (dev);
1357 OUTPUT:
1358 RETVAL
1359
1360UV
1361makedev (UV maj, UV min)
1362 CODE:
1363 RETVAL = makedev (maj, min);
1364 OUTPUT:
1365 RETVAL
1570 1366
1571void 1367void
1572aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1368aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1573 PPCODE: 1369 PPCODE:
1574{ 1370{
1575 dREQ; 1371 dREQ;
1576 1372
1577 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1373 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1374 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579 req->sv1 = newSVsv (fh_or_path); 1375 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1580 1376
1581 if (SvPOK (fh_or_path)) 1377 REQ_SEND;
1582 { 1378}
1583 req->type = REQ_UTIME; 1379
1584 req->ptr1 = SvPVbyte_nolen (req->sv1); 1380void
1585 } 1381aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1586 else 1382 PPCODE:
1587 { 1383{
1588 req->type = REQ_FUTIME; 1384 dREQ;
1589 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1385
1590 } 1386 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1387 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1591 1388
1592 REQ_SEND; 1389 REQ_SEND;
1593} 1390}
1594 1391
1595void 1392void
1596aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1393aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1597 PPCODE: 1394 PPCODE:
1598{ 1395{
1599 dREQ; 1396 dREQ;
1600 1397
1601 req->mode = mode; 1398 req->int2 = mode;
1602 req->sv1 = newSVsv (fh_or_path); 1399 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1603
1604 if (SvPOK (fh_or_path))
1605 {
1606 req->type = REQ_CHMOD;
1607 req->ptr1 = SvPVbyte_nolen (req->sv1);
1608 }
1609 else
1610 {
1611 req->type = REQ_FCHMOD;
1612 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613 }
1614 1400
1615 REQ_SEND; 1401 REQ_SEND;
1616} 1402}
1617 1403
1618void 1404void
… …
1621{ 1407{
1622 dREQ; 1408 dREQ;
1623 1409
1624 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1410 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1411 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626 req->sv1 = newSVsv (fh_or_path); 1412 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1627 1413
1628 if (SvPOK (fh_or_path)) 1414 REQ_SEND;
1629 { 1415}
1630 req->type = REQ_CHOWN; 1416
1631 req->ptr1 = SvPVbyte_nolen (req->sv1); 1417void
1632 } 1418aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1633 else 1419 PPCODE:
1634 { 1420{
1635 req->type = REQ_FCHOWN; 1421 dREQ;
1636 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1422
1637 } 1423 req->type = EIO_READDIR;
1424 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1425
1426 if (flags & EIO_READDIR_DENTS)
1427 req->int1 |= EIO_READDIR_CUSTOM2;
1428
1429 req_set_path1 (req, pathname);
1430
1431 REQ_SEND;
1432}
1433
1434void
1435aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1436 PPCODE:
1437{
1438 dREQ;
1439
1440 req->type = EIO_MKDIR;
1441 req->int2 = mode;
1442 req_set_path1 (req, pathname);
1638 1443
1639 REQ_SEND; 1444 REQ_SEND;
1640} 1445}
1641 1446
1642void 1447void
1643aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1448aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1644 ALIAS: 1449 ALIAS:
1645 aio_unlink = REQ_UNLINK 1450 aio_unlink = EIO_UNLINK
1646 aio_rmdir = REQ_RMDIR 1451 aio_rmdir = EIO_RMDIR
1647 aio_readdir = REQ_READDIR 1452 aio_readdir = EIO_READDIR
1648 PPCODE: 1453 PPCODE:
1649{ 1454{
1650 dREQ; 1455 dREQ;
1651 1456
1652 req->type = ix; 1457 req->type = ix;
1653 req->sv1 = newSVsv (pathname); 1458 req_set_path1 (req, pathname);
1654 req->ptr1 = SvPVbyte_nolen (req->sv1);
1655
1656 REQ_SEND;
1657}
1658
1659void
1660aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1661 PPCODE:
1662{
1663 dREQ;
1664
1665 req->type = REQ_MKDIR;
1666 req->sv1 = newSVsv (pathname);
1667 req->ptr1 = SvPVbyte_nolen (req->sv1);
1668 req->mode = mode;
1669 1459
1670 REQ_SEND; 1460 REQ_SEND;
1671} 1461}
1672 1462
1673void 1463void
1674aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef) 1464aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675 ALIAS: 1465 ALIAS:
1676 aio_link = REQ_LINK 1466 aio_link = EIO_LINK
1677 aio_symlink = REQ_SYMLINK 1467 aio_symlink = EIO_SYMLINK
1678 aio_rename = REQ_RENAME 1468 aio_rename = EIO_RENAME
1679 PPCODE: 1469 PPCODE:
1680{ 1470{
1471 eio_wd wd2 = 0;
1681 dREQ; 1472 dREQ;
1682 1473
1683 req->type = ix; 1474 req->type = ix;
1684 req->sv2 = newSVsv (oldpath); 1475 req_set_path1 (req, oldpath);
1685 req->ptr2 = SvPVbyte_nolen (req->sv2); 1476 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1686 req->sv1 = newSVsv (newpath); 1477 req->int3 = (long)wd2;
1687 req->ptr1 = SvPVbyte_nolen (req->sv1);
1688 1478
1689 REQ_SEND; 1479 REQ_SEND;
1690} 1480}
1691 1481
1692void 1482void
1693aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1483aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1694 PPCODE: 1484 PPCODE:
1695{ 1485{
1696 dREQ; 1486 dREQ;
1697 1487
1698 req->type = REQ_MKNOD; 1488 req->type = EIO_MKNOD;
1699 req->sv1 = newSVsv (pathname);
1700 req->ptr1 = SvPVbyte_nolen (req->sv1);
1701 req->mode = (mode_t)mode; 1489 req->int2 = (mode_t)mode;
1702 req->offs = dev; 1490 req->offs = dev;
1491 req_set_path1 (req, pathname);
1703 1492
1704 REQ_SEND; 1493 REQ_SEND;
1705} 1494}
1706 1495
1707void 1496void
1497aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1498 ALIAS:
1499 aio_mtouch = EIO_MTOUCH
1500 aio_msync = EIO_MSYNC
1501 PPCODE:
1502{
1503 STRLEN svlen;
1504 char *svptr = SvPVbyte (data, svlen);
1505 UV len = SvUV (length);
1506
1507 if (offset < 0)
1508 offset += svlen;
1509
1510 if (offset < 0 || offset > svlen)
1511 croak ("offset outside of scalar");
1512
1513 if (!SvOK (length) || len + offset > svlen)
1514 len = svlen - offset;
1515
1516 {
1517 dREQ;
1518
1519 req->type = ix;
1520 req->sv2 = SvREFCNT_inc (data);
1521 req->ptr2 = (char *)svptr + offset;
1522 req->size = len;
1523 req->int1 = flags;
1524
1525 REQ_SEND;
1526 }
1527}
1528
1529void
1530aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1531 PPCODE:
1532{
1533 STRLEN svlen;
1534 char *svptr = SvPVbyte (data, svlen);
1535 UV len = SvUV (length);
1536
1537 if (offset < 0)
1538 offset += svlen;
1539
1540 if (offset < 0 || offset > svlen)
1541 croak ("offset outside of scalar");
1542
1543 if (!SvOK (length) || len + offset > svlen)
1544 len = svlen - offset;
1545
1546 {
1547 dREQ;
1548
1549 req->type = EIO_MLOCK;
1550 req->sv2 = SvREFCNT_inc (data);
1551 req->ptr2 = (char *)svptr + offset;
1552 req->size = len;
1553
1554 REQ_SEND;
1555 }
1556}
1557
1558void
1559aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1560 PPCODE:
1561{
1562 dREQ;
1563
1564 req->type = EIO_MLOCKALL;
1565 req->int1 = flags;
1566
1567 REQ_SEND;
1568}
1569
1570void
1571aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1572 PPCODE:
1573{
1574 int fd = s_fileno_croak (fh, 0);
1575 dREQ;
1576
1577 req->type = EIO_CUSTOM;
1578 req->sv1 = newSVsv (fh);
1579 req->int1 = fd;
1580
1581 req->feed = fiemap;
1582#if HAVE_FIEMAP
1583 /* keep our fingers crossed that the next two types are 64 bit */
1584 req->offs = start;
1585 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1586 req->int2 = flags;
1587 req->int3 = SvOK (count) ? SvIV (count) : -1;
1588#endif
1589
1590 REQ_SEND;
1591}
1592
1593void
1708aio_busy (double delay, SV *callback=&PL_sv_undef) 1594aio_busy (double delay, SV *callback=&PL_sv_undef)
1709 PPCODE: 1595 PPCODE:
1710{ 1596{
1711 dREQ; 1597 dREQ;
1712 1598
1713 req->type = REQ_BUSY; 1599 req->type = EIO_BUSY;
1714 req->nv1 = delay < 0. ? 0. : delay; 1600 req->nv1 = delay < 0. ? 0. : delay;
1715 1601
1716 REQ_SEND; 1602 REQ_SEND;
1717} 1603}
1718 1604
1719void 1605void
1720aio_group (SV *callback=&PL_sv_undef) 1606aio_group (SV *callback=&PL_sv_undef)
1721 PROTOTYPE: ;$
1722 PPCODE: 1607 PPCODE:
1723{ 1608{
1724 dREQ; 1609 dREQ;
1725 1610
1726 req->type = REQ_GROUP; 1611 req->type = EIO_GROUP;
1727 1612
1728 req_send (req); 1613 req_submit (req);
1729 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1614 XPUSHs (req_sv (req, aio_grp_stash));
1730} 1615}
1731 1616
1732void 1617void
1733aio_nop (SV *callback=&PL_sv_undef) 1618aio_nop (SV *callback=&PL_sv_undef)
1619 ALIAS:
1620 aio_nop = EIO_NOP
1621 aio_sync = EIO_SYNC
1734 PPCODE: 1622 PPCODE:
1735{ 1623{
1736 dREQ; 1624 dREQ;
1737 1625
1738 req->type = REQ_NOP; 1626 req->type = ix;
1739 1627
1740 REQ_SEND; 1628 REQ_SEND;
1741} 1629}
1742 1630
1743int 1631int
1744aioreq_pri (int pri = 0) 1632aioreq_pri (int pri = 0)
1745 PROTOTYPE: ;$
1746 CODE: 1633 CODE:
1747 RETVAL = next_pri - PRI_BIAS; 1634 RETVAL = next_pri;
1748 if (items > 0) 1635 if (items > 0)
1749 { 1636 {
1750 if (pri < PRI_MIN) pri = PRI_MIN; 1637 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751 if (pri > PRI_MAX) pri = PRI_MAX; 1638 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752 next_pri = pri + PRI_BIAS; 1639 next_pri = pri;
1753 } 1640 }
1754 OUTPUT: 1641 OUTPUT:
1755 RETVAL 1642 RETVAL
1756 1643
1757void 1644void
1758aioreq_nice (int nice = 0) 1645aioreq_nice (int nice = 0)
1759 CODE: 1646 CODE:
1760 nice = next_pri - nice; 1647 nice = next_pri - nice;
1761 if (nice < PRI_MIN) nice = PRI_MIN; 1648 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762 if (nice > PRI_MAX) nice = PRI_MAX; 1649 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763 next_pri = nice + PRI_BIAS; 1650 next_pri = nice;
1764 1651
1765void 1652void
1766flush () 1653flush ()
1767 PROTOTYPE:
1768 CODE: 1654 CODE:
1769 while (nreqs) 1655 while (eio_nreqs ())
1770 { 1656 {
1771 poll_wait (); 1657 poll_wait ();
1772 poll_cb (); 1658 poll_cb ();
1773 } 1659 }
1774 1660
1775int 1661int
1776poll() 1662poll ()
1777 PROTOTYPE:
1778 CODE: 1663 CODE:
1779 poll_wait (); 1664 poll_wait ();
1780 RETVAL = poll_cb (); 1665 RETVAL = poll_cb ();
1781 OUTPUT: 1666 OUTPUT:
1782 RETVAL 1667 RETVAL
1783 1668
1784int 1669int
1785poll_fileno() 1670poll_fileno ()
1786 PROTOTYPE:
1787 CODE: 1671 CODE:
1788 RETVAL = respipe [0]; 1672 RETVAL = s_epipe_fd (&respipe);
1789 OUTPUT: 1673 OUTPUT:
1790 RETVAL 1674 RETVAL
1791 1675
1792int 1676int
1793poll_cb(...) 1677poll_cb (...)
1794 PROTOTYPE: 1678 PROTOTYPE:
1795 CODE: 1679 CODE:
1796 RETVAL = poll_cb (); 1680 RETVAL = poll_cb ();
1797 OUTPUT: 1681 OUTPUT:
1798 RETVAL 1682 RETVAL
1799 1683
1800void 1684void
1801poll_wait() 1685poll_wait ()
1802 PROTOTYPE:
1803 CODE: 1686 CODE:
1804 poll_wait (); 1687 poll_wait ();
1805 1688
1806void
1807setsig (int signum = SIGIO)
1808 PROTOTYPE: ;$
1809 CODE:
1810{
1811 if (block_sig_level)
1812 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814 LOCK (reslock);
1815 main_tid = pthread_self ();
1816 main_sig = signum;
1817 UNLOCK (reslock);
1818
1819 if (main_sig && npending)
1820 pthread_kill (main_tid, main_sig);
1821}
1822
1823void
1824aio_block (SV *cb)
1825 PROTOTYPE: &
1826 PPCODE:
1827{
1828 int count;
1829
1830 block_sig ();
1831 PUSHMARK (SP);
1832 PUTBACK;
1833 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834 SPAGAIN;
1835 unblock_sig ();
1836
1837 if (SvTRUE (ERRSV))
1838 croak (0);
1839
1840 XSRETURN (count);
1841}
1842
1843int 1689int
1844nreqs() 1690nreqs ()
1845 PROTOTYPE:
1846 CODE: 1691 CODE:
1847 RETVAL = nreqs; 1692 RETVAL = eio_nreqs ();
1848 OUTPUT: 1693 OUTPUT:
1849 RETVAL 1694 RETVAL
1850 1695
1851int 1696int
1852nready() 1697nready ()
1853 PROTOTYPE:
1854 CODE: 1698 CODE:
1855 RETVAL = get_nready (); 1699 RETVAL = eio_nready ();
1856 OUTPUT: 1700 OUTPUT:
1857 RETVAL 1701 RETVAL
1858 1702
1859int 1703int
1860npending() 1704npending ()
1861 PROTOTYPE:
1862 CODE: 1705 CODE:
1863 RETVAL = get_npending (); 1706 RETVAL = eio_npending ();
1864 OUTPUT: 1707 OUTPUT:
1865 RETVAL 1708 RETVAL
1866 1709
1867int 1710int
1868nthreads() 1711nthreads ()
1869 PROTOTYPE:
1870 CODE: 1712 CODE:
1871 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1713 RETVAL = eio_nthreads ();
1872 RETVAL = started;
1873 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874 OUTPUT: 1714 OUTPUT:
1875 RETVAL 1715 RETVAL
1876 1716
1717int
1718fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1719 CODE:
1720 RETVAL = posix_fadvise (fh, offset, length, advice);
1721 OUTPUT:
1722 RETVAL
1723
1724IV
1725sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1726 CODE:
1727 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1728 OUTPUT:
1729 RETVAL
1730
1731void
1732mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1733 PPCODE:
1734 sv_unmagic (scalar, MMAP_MAGIC);
1735{
1736 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1737 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1738 if (addr == (void *)-1)
1739 XSRETURN_NO;
1740
1741 sv_force_normal (scalar);
1742
1743 /* we store the length in mg_obj, as namlen is I32 :/ */
1744 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1745 ->mg_obj = (SV *)length;
1746
1747 SvUPGRADE (scalar, SVt_PV); /* nop... */
1748
1749 if (!(prot & PROT_WRITE))
1750 SvREADONLY_on (scalar);
1751
1752 if (SvLEN (scalar))
1753 Safefree (SvPVX (scalar));
1754
1755 SvPVX (scalar) = (char *)addr;
1756 SvCUR_set (scalar, length);
1757 SvLEN_set (scalar, 0);
1758 SvPOK_only (scalar);
1759
1760 XSRETURN_YES;
1761}
1762
1763void
1764munmap (SV *scalar)
1765 CODE:
1766 sv_unmagic (scalar, MMAP_MAGIC);
1767
1768int
1769madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1770 ALIAS:
1771 mprotect = 1
1772 CODE:
1773{
1774 STRLEN svlen;
1775 void *addr = SvPVbyte (scalar, svlen);
1776 size_t len = SvUV (length);
1777
1778 if (offset < 0)
1779 offset += svlen;
1780
1781 if (offset < 0 || offset > svlen)
1782 croak ("offset outside of scalar");
1783
1784 if (!SvOK (length) || len + offset > svlen)
1785 len = svlen - offset;
1786
1787 addr = (void *)(((intptr_t)addr) + offset);
1788 eio_page_align (&addr, &len);
1789
1790 switch (ix)
1791 {
1792 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1793 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1794 }
1795}
1796 OUTPUT:
1797 RETVAL
1798
1799int
1800munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1801 CODE:
1802{
1803 STRLEN svlen;
1804 void *addr = SvPVbyte (scalar, svlen);
1805 size_t len = SvUV (length);
1806
1807 if (offset < 0)
1808 offset += svlen;
1809
1810 if (offset < 0 || offset > svlen)
1811 croak ("offset outside of scalar");
1812
1813 if (!SvOK (length) || len + offset > svlen)
1814 len = svlen - offset;
1815
1816 addr = (void *)(((intptr_t)addr) + offset);
1817 eio_page_align (&addr, &len);
1818#if _POSIX_MEMLOCK_RANGE
1819 RETVAL = munlock (addr, len);
1820#else
1821 RETVAL = EIO_ENOSYS ();
1822#endif
1823}
1824 OUTPUT:
1825 RETVAL
1826
1827int
1828munlockall ()
1829 CODE:
1830#if _POSIX_MEMLOCK
1831 munlockall ();
1832#else
1833 RETVAL = EIO_ENOSYS ();
1834#endif
1835 OUTPUT:
1836 RETVAL
1837
1838int
1839splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1840 CODE:
1841{
1842#if HAVE_LINUX_SPLICE
1843 loff_t off_in_, off_out_;
1844 RETVAL = splice (
1845 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1846 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1847 length, flags
1848 );
1849#else
1850 RETVAL = EIO_ENOSYS ();
1851#endif
1852}
1853 OUTPUT:
1854 RETVAL
1855
1856int
1857tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1858 CODE:
1859#if HAVE_LINUX_SPLICE
1860 RETVAL = tee (rfh, wfh, length, flags);
1861#else
1862 RETVAL = EIO_ENOSYS ();
1863#endif
1864 OUTPUT:
1865 RETVAL
1866
1867void _on_next_submit (SV *cb)
1868 CODE:
1869 SvREFCNT_dec (on_next_submit);
1870 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1871
1877PROTOTYPES: DISABLE 1872PROTOTYPES: DISABLE
1873
1874MODULE = IO::AIO PACKAGE = IO::AIO::WD
1875
1876BOOT:
1877{
1878 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1879 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1880}
1881
1882void
1883DESTROY (SV *self)
1884 CODE:
1885{
1886 aio_wd wd = SvAIO_WD (self);
1887#if HAVE_AT
1888 {
1889 SV *callback = &PL_sv_undef;
1890 dREQ; /* clobbers next_pri :/ */
1891 next_pri = req->pri; /* restore next_pri */
1892 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1893 req->type = EIO_WD_CLOSE;
1894 req->wd = wd;
1895 REQ_SEND;
1896 }
1897#else
1898 eio_wd_close_sync (wd);
1899#endif
1900}
1878 1901
1879MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1902MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880 1903
1881void 1904void
1882cancel (aio_req_ornot req) 1905cancel (aio_req_ornot req)
1883 CODE: 1906 CODE:
1884 req_cancel (req); 1907 eio_cancel (req);
1885 1908
1886void 1909void
1887cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1910cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1888 CODE: 1911 PPCODE:
1912{
1913 if (GIMME_V != G_VOID)
1914 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1915
1916 if (items > 1)
1917 {
1918 SV *cb_cv =get_cb (callback);
1919
1889 SvREFCNT_dec (req->callback); 1920 SvREFCNT_dec (req->callback);
1890 req->callback = newSVsv (callback); 1921 req->callback = SvREFCNT_inc (cb_cv);
1922 }
1923}
1891 1924
1892MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1925MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893 1926
1894void 1927void
1895add (aio_req grp, ...) 1928add (aio_req grp, ...)
1896 PPCODE: 1929 PPCODE:
1897{ 1930{
1898 int i; 1931 int i;
1899 aio_req req;
1900
1901 if (main_sig && !block_sig_level)
1902 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903 1932
1904 if (grp->int1 == 2) 1933 if (grp->int1 == 2)
1905 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1934 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906 1935
1907 for (i = 1; i < items; ++i ) 1936 for (i = 1; i < items; ++i )
1908 { 1937 {
1938 aio_req req;
1939
1909 if (GIMME_V != G_VOID) 1940 if (GIMME_V != G_VOID)
1910 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1941 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911 1942
1912 req = SvAIO_REQ (ST (i)); 1943 req = SvAIO_REQ (ST (i));
1913 1944
1914 if (req) 1945 if (req)
1915 { 1946 eio_grp_add (grp, req);
1916 ++grp->size;
1917 req->grp = grp;
1918
1919 req->grp_prev = 0;
1920 req->grp_next = grp->grp_first;
1921
1922 if (grp->grp_first)
1923 grp->grp_first->grp_prev = req;
1924
1925 grp->grp_first = req;
1926 }
1927 } 1947 }
1928} 1948}
1929 1949
1930void 1950void
1931cancel_subs (aio_req_ornot req) 1951cancel_subs (aio_req_ornot req)
… …
1940 AV *av; 1960 AV *av;
1941 1961
1942 grp->errorno = errno; 1962 grp->errorno = errno;
1943 1963
1944 av = newAV (); 1964 av = newAV ();
1965 av_extend (av, items - 1);
1945 1966
1946 for (i = 1; i < items; ++i ) 1967 for (i = 1; i < items; ++i )
1947 av_push (av, newSVsv (ST (i))); 1968 av_push (av, newSVsv (ST (i)));
1948 1969
1949 SvREFCNT_dec (grp->sv1); 1970 SvREFCNT_dec (grp->sv1);
… …
1956 grp->errorno = errorno; 1977 grp->errorno = errorno;
1957 1978
1958void 1979void
1959limit (aio_req grp, int limit) 1980limit (aio_req grp, int limit)
1960 CODE: 1981 CODE:
1961 grp->int2 = limit; 1982 eio_grp_limit (grp, limit);
1962 aio_grp_feed (grp);
1963 1983
1964void 1984void
1965feed (aio_req grp, SV *callback=&PL_sv_undef) 1985feed (aio_req grp, SV *callback=&PL_sv_undef)
1966 CODE: 1986 CODE:
1967{ 1987{
1968 SvREFCNT_dec (grp->sv2); 1988 SvREFCNT_dec (grp->sv2);
1969 grp->sv2 = newSVsv (callback); 1989 grp->sv2 = newSVsv (callback);
1990 grp->feed = aio_grp_feed;
1970 1991
1971 if (grp->int2 <= 0) 1992 if (grp->int2 <= 0)
1972 grp->int2 = 2; 1993 grp->int2 = 2;
1973 1994
1974 aio_grp_feed (grp); 1995 eio_grp_limit (grp, grp->int2);
1975} 1996}
1976 1997

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