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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.96 by root, Sat Dec 23 04:49:37 2006 UTC vs.
Revision 1.225 by root, Sat Dec 29 09:35:39 2012 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
22#include <stdlib.h> 12#include <stdlib.h>
23#include <errno.h> 13#include <errno.h>
24#include <sys/time.h>
25#include <sys/select.h>
26#include <sys/types.h> 14#include <sys/types.h>
27#include <sys/stat.h> 15#include <sys/stat.h>
28#include <limits.h> 16#include <limits.h>
29#include <unistd.h>
30#include <fcntl.h> 17#include <fcntl.h>
31#include <signal.h>
32#include <sched.h> 18#include <sched.h>
33 19
34#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
35# if __linux 24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
30# endif
31#endif
32
33/* perl namespace pollution */
34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
42#ifdef _WIN32
43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
79#else
80
81 #include <sys/time.h>
36# include <sys/sendfile.h> 82 #include <sys/select.h>
37# elif __freebsd 83 #include <unistd.h>
38# include <sys/socket.h> 84 #include <utime.h>
39# include <sys/uio.h> 85 #include <signal.h>
40# elif __hpux 86
41# include <sys/socket.h> 87 #define EIO_STRUCT_STAT Stat_t
42# elif __solaris /* not yet */ 88
43# include <sys/sendfile.h> 89#endif
90
91/*****************************************************************************/
92
93#if __GNUC__ >= 3
94# define expect(expr,value) __builtin_expect ((expr),(value))
95#else
96# define expect(expr,value) (expr)
97#endif
98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 SV *sv3, *sv4; \
114 STRLEN stroffset; \
115 SV *self;
116
117#define EIO_NO_WRAPPERS 1
118
119#include "libeio/config.h"
120#include "libeio/eio.h"
121
122static int req_invoke (eio_req *req);
123#define EIO_FINISH(req) req_invoke (req)
124static void req_destroy (eio_req *grp);
125#define EIO_DESTROY(req) req_destroy (req)
126
127#include "libeio/eio.c"
128
129#if !HAVE_POSIX_FADVISE
130# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
131#endif
132
133#if !HAVE_POSIX_MADVISE
134# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#ifndef MAP_ANONYMOUS
138# ifdef MAP_ANON
139# define MAP_ANONYMOUS MAP_ANON
44# else 140# else
45# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46# endif 142# endif
47#endif 143#endif
48 144
49/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
50#define IDLE_TIMEOUT 10 146#include "def0.h"
51 147
52/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
53#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
54# define NAME_MAX 4096
55#endif
56
57#ifndef PTHREAD_STACK_MIN
58/* care for broken platforms, e.g. windows */
59# define PTHREAD_STACK_MIN 16384
60#endif
61
62#if __ia64
63# define STACKSIZE 65536
64#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65# define STACKSIZE PTHREAD_STACK_MIN
66#else
67# define STACKSIZE 16384
68#endif
69
70/* wether word reads are potentially non-atomic.
71 * this is conservatice, likely most arches this runs
72 * on have atomic word read/writes.
73 */
74#ifndef WORDACCESS_UNSAFE
75# if __i386 || __x86_64
76# define WORDACCESS_UNSAFE 0
77# else
78# define WORDACCESS_UNSAFE 1
79# endif 150#endif
151#ifndef major
152# define major(dev) ((dev) >> 8)
80#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
81 157
82/* buffer size for various temporary buffers */ 158#if PAGESIZE <= 0
83#define AIO_BUFSIZE 65536 159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
84 161
85#define dBUF \ 162/*****************************************************************************/
86 char *aio_buf; \
87 LOCK (wrklock); \
88 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
89 UNLOCK (wrklock); \
90 if (!aio_buf) \
91 return -1;
92 163
93typedef SV SV8; /* byte-sv, used for argument-checking */ 164static void
94 165fiemap (eio_req *req)
95enum {
96 REQ_QUIT,
97 REQ_OPEN, REQ_CLOSE,
98 REQ_READ, REQ_WRITE, REQ_READAHEAD,
99 REQ_SENDFILE,
100 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101 REQ_FSYNC, REQ_FDATASYNC,
102 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
103 REQ_MKNOD, REQ_READDIR,
104 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105 REQ_GROUP, REQ_NOP,
106 REQ_BUSY,
107};
108
109#define AIO_REQ_KLASS "IO::AIO::REQ"
110#define AIO_GRP_KLASS "IO::AIO::GRP"
111
112typedef struct aio_cb
113{ 166{
114 struct aio_cb *volatile next; 167 req->result = -1;
115 168
116 SV *callback, *fh; 169#if HAVE_FIEMAP
117 SV *sv1, *sv2; 170 /* assume some c99 */
118 void *ptr1, *ptr2; 171 struct fiemap *fiemap = 0;
119 off_t offs; 172 size_t end_offset;
120 size_t size; 173 int count = req->int3;
121 ssize_t result;
122 174
123 STRLEN stroffset; 175 req->flags |= EIO_FLAG_PTR1_FREE;
124 int type;
125 int int1, int2;
126 int errorno;
127 mode_t mode; /* open */
128 176
129 unsigned char flags; 177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
130 unsigned char pri; 178 /* increase in 3.5kb steps */
179 if (count < 0)
180 count = 8;
131 181
132 SV *self; /* the perl counterpart of this request, if any */ 182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
133 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 183 errno = ENOMEM;
134} aio_cb; 184 if (!fiemap)
135
136enum {
137 FLAG_CANCELLED = 0x01, /* request was cancelled */
138 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140};
141
142typedef aio_cb *aio_req;
143typedef aio_cb *aio_req_ornot;
144
145enum {
146 PRI_MIN = -4,
147 PRI_MAX = 4,
148
149 DEFAULT_PRI = 0,
150 PRI_BIAS = -PRI_MIN,
151 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152};
153
154#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156static unsigned int max_poll_time = 0;
157static unsigned int max_poll_reqs = 0;
158
159/* calculcate time difference in ~1/AIO_TICKS of a second */
160static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161{
162 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
163 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
164}
165
166static pthread_t main_tid;
167static int main_sig;
168static int block_sig_level;
169
170void block_sig ()
171{
172 sigset_t ss;
173
174 if (block_sig_level++)
175 return; 185 return;
176 186
177 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)
178 return; 195 return;
179 196
180 sigemptyset (&ss); 197 if (req->int3 >= 0 /* not autosizing */
181 sigaddset (&ss, main_sig); 198 || !fiemap->fm_mapped_extents /* no more extents */
182 pthread_sigmask (SIG_BLOCK, &ss, 0); 199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
183} 200 goto done;
184 201
185void unblock_sig () 202 /* else we have to loop -
186{ 203 * it would be tempting (atcually I tried that first) to just query the
187 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 */
188 208
189 if (--block_sig_level) 209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
190 return;
191 210
192 if (!main_sig) 211 for (;;)
193 return;
194
195 sigemptyset (&ss);
196 sigaddset (&ss, main_sig);
197 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198}
199
200static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202static unsigned int started, idle, wanted;
203
204#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206#else
207# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208#endif
209
210#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213/* worker threads management */
214static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216typedef struct worker {
217 /* locked by wrklock */
218 struct worker *prev, *next;
219
220 pthread_t tid;
221
222 /* locked by reslock, reqlock or wrklock */
223 aio_req req; /* currently processed request */
224 void *dbuf;
225 DIR *dirp;
226} worker;
227
228static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230static void worker_clear (worker *wrk)
231{
232 if (wrk->dirp)
233 { 212 {
234 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) */
235 wrk->dirp = 0; 214 char scratch[3072];
236 } 215 struct fiemap *incmap = (struct fiemap *)scratch;
237 216
238 if (wrk->dbuf) 217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
239 { 218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
240 free (wrk->dbuf); 219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
241 wrk->dbuf = 0; 220 incmap->fm_flags = fiemap->fm_flags;
242 } 221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
243}
244 222
245static void worker_free (worker *wrk) 223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
246{
247 wrk->next->prev = wrk->prev;
248 wrk->prev->next = wrk->next;
249
250 free (wrk);
251}
252
253static volatile unsigned int nreqs, nready, npending;
254static volatile unsigned int max_idle = 4;
255static volatile unsigned int max_outstanding = 0xffffffff;
256static int respipe [2];
257
258static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262#if WORDACCESS_UNSAFE
263
264static unsigned int get_nready ()
265{
266 unsigned int retval;
267
268 LOCK (reqlock);
269 retval = nready;
270 UNLOCK (reqlock);
271
272 return retval;
273}
274
275static unsigned int get_npending ()
276{
277 unsigned int retval;
278
279 LOCK (reslock);
280 retval = npending;
281 UNLOCK (reslock);
282
283 return retval;
284}
285
286static unsigned int get_nthreads ()
287{
288 unsigned int retval;
289
290 LOCK (wrklock);
291 retval = started;
292 UNLOCK (wrklock);
293
294 return retval;
295}
296
297#else
298
299# define get_nready() nready
300# define get_npending() npending
301# define get_nthreads() started
302
303#endif
304
305/*
306 * a somewhat faster data structure might be nice, but
307 * with 8 priorities this actually needs <20 insns
308 * per shift, the most expensive operation.
309 */
310typedef struct {
311 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312 int size;
313} reqq;
314
315static reqq req_queue;
316static reqq res_queue;
317
318int reqq_push (reqq *q, aio_req req)
319{
320 int pri = req->pri;
321 req->next = 0;
322
323 if (q->qe[pri])
324 {
325 q->qe[pri]->next = req;
326 q->qe[pri] = req;
327 }
328 else
329 q->qe[pri] = q->qs[pri] = req;
330
331 return q->size++;
332}
333
334aio_req reqq_shift (reqq *q)
335{
336 int pri;
337
338 if (!q->size)
339 return 0; 224 return;
340 225
341 --q->size; 226 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
342 227 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
343 for (pri = NUM_PRI; pri--; ) 228 errno = ENOMEM;
344 {
345 aio_req req = q->qs[pri];
346
347 if (req) 229 if (!fiemap)
230 return;
231
232 req->ptr1 = fiemap;
233
234 for (count = 0; count < incmap->fm_mapped_extents; ++count)
348 { 235 {
349 if (!(q->qs[pri] = req->next)) 236 struct fiemap_extent *e = incmap->fm_extents + count;
350 q->qe[pri] = 0;
351 237
352 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
353 } 246 }
354 } 247 }
355 248
356 abort (); 249done:
357} 250 req->result = 0;
358 251
359static int poll_cb (); 252#else
360static 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
361static void req_free (aio_req req); 273static void req_destroy (aio_req req);
362static void req_cancel (aio_req req); 274static void req_cancel (aio_req req);
363 275
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
364/* must be called at most once */ 290/* must be called at most once */
365static SV *req_sv (aio_req req, const char *klass) 291static SV *
292req_sv (aio_req req, HV *stash)
366{ 293{
367 if (!req->self) 294 if (!req->self)
368 { 295 {
369 req->self = (SV *)newHV (); 296 req->self = (SV *)newHV ();
370 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 297 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371 } 298 }
372 299
373 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 300 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374} 301}
375 302
376static 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)
377{ 311{
378 MAGIC *mg; 312 MAGIC *mg;
379 313
380 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")))
381 croak ("object of class " AIO_REQ_KLASS " expected"); 319 croak ("object of class IO::AIO::REQ expected");
382 320
383 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 321 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384 322
385 return mg ? (aio_req)mg->mg_ptr : 0; 323 return mg ? (aio_req)mg->mg_ptr : 0;
386} 324}
387 325
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
388static void aio_grp_feed (aio_req grp) 338aio_grp_feed (aio_req grp)
389{ 339{
390 block_sig (); 340 if (grp->sv2 && SvOK (grp->sv2))
391
392 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393 { 341 {
394 int old_len = grp->size;
395
396 if (grp->sv2 && SvOK (grp->sv2))
397 {
398 dSP; 342 dSP;
399 343
400 ENTER; 344 ENTER;
401 SAVETMPS; 345 SAVETMPS;
402 PUSHMARK (SP); 346 PUSHMARK (SP);
403 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 347 XPUSHs (req_sv (grp, aio_grp_stash));
404 PUTBACK; 348 PUTBACK;
405 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 349 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406 SPAGAIN; 350 SPAGAIN;
407 FREETMPS; 351 FREETMPS;
408 LEAVE; 352 LEAVE;
409 }
410
411 /* stop if no progress has been made */
412 if (old_len == grp->size)
413 {
414 SvREFCNT_dec (grp->sv2);
415 grp->sv2 = 0;
416 break;
417 }
418 } 353 }
419
420 unblock_sig ();
421} 354}
422 355
423static void aio_grp_dec (aio_req grp) 356static void
357req_submit (eio_req *req)
424{ 358{
425 --grp->size; 359 eio_submit (req);
426 360
427 /* call feeder, if applicable */ 361 if (expect_false (on_next_submit))
428 aio_grp_feed (grp);
429
430 /* finish, if done */
431 if (!grp->size && grp->int1)
432 { 362 {
433 block_sig (); 363 dSP;
364 SV *cb = sv_2mortal (on_next_submit);
434 365
435 if (!req_invoke (grp)) 366 on_next_submit = 0;
436 {
437 req_free (grp);
438 unblock_sig ();
439 croak (0);
440 }
441 367
442 req_free (grp); 368 PUSHMARK (SP);
443 unblock_sig (); 369 PUTBACK;
370 call_sv (cb, G_DISCARD | G_EVAL);
444 } 371 }
445} 372}
446 373
374static int
447static int req_invoke (aio_req req) 375req_invoke (eio_req *req)
448{ 376{
449 dSP;
450
451 if (req->flags & FLAG_SV1_RO_OFF) 377 if (req->flags & FLAG_SV2_RO_OFF)
452 SvREADONLY_off (req->sv1); 378 SvREADONLY_off (req->sv2);
453 379
454 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 380 if (!EIO_CANCELLED (req) && req->callback)
455 { 381 {
382 dSP;
383 static SV *sv_result_cache; /* caches the result integer SV */
384 SV *sv_result;
385
456 ENTER; 386 ENTER;
457 SAVETMPS; 387 SAVETMPS;
458 PUSHMARK (SP); 388 PUSHMARK (SP);
459 EXTEND (SP, 1); 389 EXTEND (SP, 1);
460 390
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
461 switch (req->type) 404 switch (req->type)
462 { 405 {
406 case EIO_WD_OPEN:
407 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
408 break;
409
463 case REQ_READDIR: 410 case EIO_READDIR:
464 { 411 {
465 SV *rv = &PL_sv_undef; 412 SV *rv = &PL_sv_undef;
466 413
467 if (req->result >= 0) 414 if (req->result >= 0)
468 { 415 {
469 int i; 416 int i;
470 char *buf = req->ptr2; 417 char *names = (char *)req->ptr2;
418 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471 AV *av = newAV (); 419 AV *av = newAV ();
472 420
473 av_extend (av, req->result - 1); 421 av_extend (av, req->result - 1);
474 422
475 for (i = 0; i < req->result; ++i) 423 for (i = 0; i < req->result; ++i)
476 { 424 {
477 SV *sv = newSVpv (buf, 0); 425 if (req->int1 & EIO_READDIR_DENTS)
426 {
427 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478 428
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
479 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);
480 buf += SvCUR (sv) + 1; 457 names += SvCUR (name) + 1;
458 }
481 } 459 }
482 460
483 rv = sv_2mortal (newRV_noinc ((SV *)av)); 461 rv = sv_2mortal (newRV_noinc ((SV *)av));
484 } 462 }
485 463
486 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))));
487 } 468 }
488 break; 469 break;
489 470
490 case REQ_OPEN: 471 case EIO_OPEN:
491 { 472 {
492 /* convert fd to fh */ 473 /* convert fd to fh */
493 SV *fh; 474 SV *fh = &PL_sv_undef;
494 475
495 PUSHs (sv_2mortal (newSViv (req->result))); 476 if (req->result >= 0)
496 PUTBACK; 477 {
497 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 478 GV *gv = (GV *)sv_newmortal ();
498 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);
499 485
500 fh = POPs; 486 symlen = snprintf (
501 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
502 XPUSHs (fh); 498 PUSHs (fh);
503 } 499 }
504 break; 500 break;
505 501
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 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
513 * chooses to make it a struct.
514 */
515 unsigned long fsid = 0;
516 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
517
518 rv = sv_2mortal (newRV_noinc ((SV *)hv));
519
520 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
521 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
522 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
523 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
524 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
525 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
526 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
527 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
528 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
529 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
530 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
531 }
532#endif
533
534 PUSHs (rv);
535 }
536
537 break;
538
506 case REQ_GROUP: 539 case EIO_GROUP:
507 req->int1 = 2; /* mark group as finished */ 540 req->int1 = 2; /* mark group as finished */
508 541
509 if (req->sv1) 542 if (req->sv1)
510 { 543 {
511 int i; 544 int i;
… …
515 for (i = 0; i <= AvFILL (av); ++i) 548 for (i = 0; i <= AvFILL (av); ++i)
516 PUSHs (*av_fetch (av, i, 0)); 549 PUSHs (*av_fetch (av, i, 0));
517 } 550 }
518 break; 551 break;
519 552
520 case REQ_NOP: 553 case EIO_NOP:
521 case REQ_BUSY: 554 case EIO_BUSY:
522 break; 555 break;
523 556
524 case REQ_READLINK: 557 case EIO_READLINK:
558 case EIO_REALPATH:
525 if (req->result > 0) 559 if (req->result > 0)
560 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
561 break;
562
563 case EIO_STAT:
564 case EIO_LSTAT:
565 case EIO_FSTAT:
566 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567
568 if (!(PL_laststatval = req->result))
569 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
570 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
571
572 PUSHs (sv_result);
573 break;
574
575 case EIO_SEEK:
576 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
577 break;
578
579 case EIO_READ:
580 {
581 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
582 *SvEND (req->sv2) = 0;
583 SvPOK_only (req->sv2);
584 SvSETMAGIC (req->sv2);
585 PUSHs (sv_result);
586 }
587 break;
588
589 case EIO_CUSTOM:
590 if (req->feed == fiemap)
526 { 591 {
527 SvCUR_set (req->sv1, req->result); 592#if HAVE_FIEMAP
528 *SvEND (req->sv1) = 0;
529 PUSHs (req->sv1); 593 if (!req->result)
594 {
595 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
596
597 if (fiemap->fm_extent_count)
598 {
599 AV *av = newAV ();
600 int i;
601
602 while (fiemap->fm_mapped_extents)
603 {
604 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
605 AV *ext_av = newAV ();
606
607 av_store (ext_av, 3, newSVuv (extent->fe_flags));
608 av_store (ext_av, 2, newSVval64 (extent->fe_length));
609 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
610 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
611
612 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
613 }
614
615 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
616 }
617 else
618 {
619 SvIV_set (sv_result, fiemap->fm_mapped_extents);
620 PUSHs (sv_result);
621 }
622 }
623#endif
530 } 624 }
625 else
626 PUSHs (sv_result);
531 break; 627 break;
532 628
533 case REQ_STAT: 629 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
534 case REQ_LSTAT: 630 if (req->result > 0)
535 case REQ_FSTAT: 631 SvIV_set (sv_result, 0);
536 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 632 /* FALLTHROUGH */
537 PL_laststatval = req->result;
538 PL_statcache = *(Stat_t *)(req->ptr2);
539 PUSHs (sv_2mortal (newSViv (req->result)));
540 break;
541
542 case REQ_READ:
543 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
544 *SvEND (req->sv1) = 0;
545 PUSHs (sv_2mortal (newSViv (req->result)));
546 break;
547 633
548 default: 634 default:
549 PUSHs (sv_2mortal (newSViv (req->result))); 635 PUSHs (sv_result);
550 break; 636 break;
551 } 637 }
552 638
553 errno = req->errorno; 639 errno = req->errorno;
554 640
555 PUTBACK; 641 PUTBACK;
556 call_sv (req->callback, G_VOID | G_EVAL); 642 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557 SPAGAIN; 643 SPAGAIN;
644
645 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
646 SvREFCNT_dec (sv_result);
647 else
648 sv_result_cache = sv_result;
558 649
559 FREETMPS; 650 FREETMPS;
560 LEAVE; 651 LEAVE;
652
653 PUTBACK;
561 } 654 }
562 655
563 if (req->grp)
564 {
565 aio_req grp = req->grp;
566
567 /* unlink request */
568 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571 if (grp->grp_first == req)
572 grp->grp_first = req->grp_next;
573
574 aio_grp_dec (grp);
575 }
576
577 return !SvTRUE (ERRSV); 656 return !!SvTRUE (ERRSV);
578} 657}
579 658
580static void req_free (aio_req req) 659static void
660req_destroy (aio_req req)
581{ 661{
582 if (req->self) 662 if (req->self)
583 { 663 {
584 sv_unmagic (req->self, PERL_MAGIC_ext); 664 sv_unmagic (req->self, PERL_MAGIC_ext);
585 SvREFCNT_dec (req->self); 665 SvREFCNT_dec (req->self);
586 } 666 }
587 667
588 SvREFCNT_dec (req->fh);
589 SvREFCNT_dec (req->sv1); 668 SvREFCNT_dec (req->sv1);
590 SvREFCNT_dec (req->sv2); 669 SvREFCNT_dec (req->sv2);
670 SvREFCNT_dec (req->sv3);
671 SvREFCNT_dec (req->sv4);
591 SvREFCNT_dec (req->callback); 672 SvREFCNT_dec (req->callback);
592 673
593 if (req->flags & FLAG_PTR2_FREE)
594 free (req->ptr2);
595
596 Safefree (req); 674 free (req);
597} 675}
598 676
677static void
599static void req_cancel_subs (aio_req grp) 678req_cancel_subs (aio_req grp)
600{ 679{
601 aio_req sub;
602
603 if (grp->type != REQ_GROUP) 680 if (grp->type != EIO_GROUP)
604 return; 681 return;
605 682
606 SvREFCNT_dec (grp->sv2); 683 SvREFCNT_dec (grp->sv2);
607 grp->sv2 = 0; 684 grp->sv2 = 0;
608 685
609 for (sub = grp->grp_first; sub; sub = sub->grp_next) 686 eio_grp_cancel (grp);
610 req_cancel (sub);
611} 687}
612 688
613static void req_cancel (aio_req req) 689static void ecb_cold
690create_respipe (void)
614{ 691{
615 req->flags |= FLAG_CANCELLED; 692 if (s_epipe_renew (&respipe))
616 693 croak ("IO::AIO: unable to initialize result pipe");
617 req_cancel_subs (req);
618} 694}
619 695
620static void *aio_proc(void *arg); 696static void
621 697poll_wait (void)
622static void start_thread (void)
623{ 698{
624 sigset_t fullsigset, oldsigset;
625 pthread_attr_t attr;
626
627 worker *wrk = calloc (1, sizeof (worker));
628
629 if (!wrk)
630 croak ("unable to allocate worker thread data");
631
632 pthread_attr_init (&attr);
633 pthread_attr_setstacksize (&attr, STACKSIZE);
634 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635#ifdef PTHREAD_SCOPE_PROCESS
636 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637#endif
638
639 sigfillset (&fullsigset);
640
641 LOCK (wrklock);
642 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645 {
646 wrk->prev = &wrk_first;
647 wrk->next = wrk_first.next;
648 wrk_first.next->prev = wrk;
649 wrk_first.next = wrk;
650 ++started;
651 }
652 else
653 free (wrk);
654
655 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656 UNLOCK (wrklock);
657}
658
659static void maybe_start_thread ()
660{
661 if (get_nthreads () >= wanted)
662 return;
663
664 /* todo: maybe use idle here, but might be less exact */
665 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666 return;
667
668 start_thread ();
669}
670
671static void req_send (aio_req req)
672{
673 block_sig ();
674
675 ++nreqs;
676
677 LOCK (reqlock);
678 ++nready;
679 reqq_push (&req_queue, req);
680 pthread_cond_signal (&reqwait);
681 UNLOCK (reqlock);
682
683 unblock_sig ();
684
685 maybe_start_thread ();
686}
687
688static void end_thread (void)
689{
690 aio_req req;
691
692 Newz (0, req, 1, aio_cb);
693
694 req->type = REQ_QUIT;
695 req->pri = PRI_MAX + PRI_BIAS;
696
697 LOCK (reqlock);
698 reqq_push (&req_queue, req);
699 pthread_cond_signal (&reqwait);
700 UNLOCK (reqlock);
701
702 LOCK (wrklock);
703 --started;
704 UNLOCK (wrklock);
705}
706
707static void set_max_idle (int nthreads)
708{
709 if (WORDACCESS_UNSAFE) LOCK (reqlock);
710 max_idle = nthreads <= 0 ? 1 : nthreads;
711 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712}
713
714static void min_parallel (int nthreads)
715{
716 if (wanted < nthreads)
717 wanted = nthreads;
718}
719
720static void max_parallel (int nthreads)
721{
722 if (wanted > nthreads)
723 wanted = nthreads;
724
725 while (started > wanted)
726 end_thread ();
727}
728
729static void poll_wait ()
730{
731 fd_set rfd;
732
733 while (nreqs) 699 while (eio_nreqs ())
734 { 700 {
735 int size; 701 int size;
736 if (WORDACCESS_UNSAFE) LOCK (reslock); 702
703 X_LOCK (reslock);
737 size = res_queue.size; 704 size = res_queue.size;
738 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 705 X_UNLOCK (reslock);
739 706
740 if (size) 707 if (size)
741 return; 708 return;
742 709
743 maybe_start_thread (); 710 etp_maybe_start_thread ();
744 711
745 FD_ZERO(&rfd); 712 s_epipe_wait (&respipe);
746 FD_SET(respipe [0], &rfd);
747
748 select (respipe [0] + 1, &rfd, 0, 0, 0);
749 } 713 }
750} 714}
751 715
752static int poll_cb () 716static int
717poll_cb (void)
753{ 718{
754 dSP;
755 int count = 0;
756 int maxreqs = max_poll_reqs;
757 int do_croak = 0;
758 struct timeval tv_start, tv_now;
759 aio_req req;
760
761 if (max_poll_time)
762 gettimeofday (&tv_start, 0);
763
764 block_sig ();
765
766 for (;;) 719 for (;;)
767 { 720 {
768 for (;;) 721 int res = eio_poll ();
722
723 if (res > 0)
724 croak (0);
725
726 if (!max_outstanding || max_outstanding > eio_nreqs ())
727 return res;
728
729 poll_wait ();
730 }
731}
732
733static void ecb_cold
734reinit (void)
735{
736 create_respipe ();
737
738 if (eio_init (want_poll, done_poll) < 0)
739 croak ("IO::AIO: unable to initialise eio library");
740}
741
742/*****************************************************************************/
743
744#if !_POSIX_MAPPED_FILES
745# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
746# define munmap(addr,length) EIO_ENOSYS ()
747#endif
748
749#if !_POSIX_MEMORY_PROTECTION
750# define mprotect(addr,len,prot) EIO_ENOSYS ()
751# define PROT_NONE 0
752# define PROT_WRITE 0
753# define MAP_PRIVATE 0
754# define MAP_SHARED 0
755# define MAP_FIXED 0
756#endif
757
758#define MMAP_MAGIC PERL_MAGIC_ext
759
760static int ecb_cold
761mmap_free (pTHX_ SV *sv, MAGIC *mg)
762{
763 int old_errno = errno;
764 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
765 errno = old_errno;
766
767 mg->mg_obj = 0; /* just in case */
768
769 SvREADONLY_off (sv);
770
771 if (SvPVX (sv) != mg->mg_ptr)
772 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
773
774 SvCUR_set (sv, 0);
775 SvPVX (sv) = 0;
776 SvOK_off (sv);
777
778 return 0;
779}
780
781static MGVTBL mmap_vtbl = {
782 0, 0, 0, 0, mmap_free
783};
784
785/*****************************************************************************/
786
787static SV *
788get_cb (SV *cb_sv)
789{
790 SvGETMAGIC (cb_sv);
791 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
792}
793
794static aio_req ecb_noinline
795dreq (SV *callback)
796{
797 SV *cb_cv;
798 aio_req req;
799 int req_pri = next_pri;
800 next_pri = EIO_PRI_DEFAULT;
801
802 cb_cv = get_cb (callback);
803
804 req = calloc (sizeof (*req), 1);
805 if (!req)
806 croak ("out of memory during eio_req allocation");
807
808 req->callback = SvREFCNT_inc (cb_cv);
809 req->pri = req_pri;
810
811 return req;
812}
813
814#define dREQ \
815 aio_req req = dreq (callback); \
816
817#define REQ_SEND \
818 PUTBACK; \
819 req_submit (req); \
820 SPAGAIN; \
821 \
822 if (GIMME_V != G_VOID) \
823 XPUSHs (req_sv (req, aio_req_stash));
824
825ecb_inline void
826req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
827{
828 if (expect_false (SvROK (path)))
829 {
830 SV *rv = SvRV (path);
831 SV *wdob;
832
833 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
769 { 834 {
770 maybe_start_thread (); 835 path = AvARRAY (rv)[1];
836 wdob = AvARRAY (rv)[0];
771 837
772 LOCK (reslock); 838 if (SvOK (wdob))
773 req = reqq_shift (&res_queue);
774
775 if (req)
776 { 839 {
777 --npending; 840 *wd = SvAIO_WD (wdob);
778 841 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
779 if (!res_queue.size)
780 {
781 /* read any signals sent by the worker threads */
782 char buf [4];
783 while (read (respipe [0], buf, 4) == 4)
784 ;
785 }
786 }
787
788 UNLOCK (reslock);
789
790 if (!req)
791 break;
792
793 --nreqs;
794
795 if (req->type == REQ_GROUP && req->size)
796 {
797 req->int1 = 1; /* mark request as delayed */
798 continue;
799 } 842 }
800 else 843 else
801 { 844 *wd = EIO_INVALID_WD;
802 if (!req_invoke (req))
803 {
804 req_free (req);
805 unblock_sig ();
806 croak (0);
807 }
808
809 count++;
810 }
811
812 req_free (req);
813
814 if (maxreqs && !--maxreqs)
815 break;
816
817 if (max_poll_time)
818 {
819 gettimeofday (&tv_now, 0);
820
821 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822 break;
823 }
824 } 845 }
846 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
847 {
848 *wd = (aio_wd)(long)SvIVX (rv);
849 *wdsv = SvREFCNT_inc_NN (rv);
850 *ptr = ".";
851 return; /* path set to "." */
852 }
853 else
854 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
855 }
825 856
826 if (nreqs <= max_outstanding) 857 *pathsv = newSVsv (path);
858 *ptr = SvPVbyte_nolen (*pathsv);
859}
860
861static void ecb_noinline
862req_set_path1 (aio_req req, SV *path)
863{
864 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
865}
866
867static void ecb_noinline
868req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
869{
870 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
871
872 switch (SvTYPE (rv))
873 {
874 case SVt_PVIO:
875 case SVt_PVLV:
876 case SVt_PVGV:
877 req->type = type_fh;
878 req->sv1 = newSVsv (fh_or_path);
879 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
827 break; 880 break;
828 881
829 poll_wait (); 882 default:
830 883 req->type = type_path;
831 ++maxreqs; 884 req_set_path1 (req, fh_or_path);
885 break;
832 } 886 }
833
834 unblock_sig ();
835 return count;
836} 887}
837 888
838static void create_pipe () 889XS(boot_IO__AIO) ecb_cold;
839{
840 if (pipe (respipe))
841 croak ("unable to initialize result pipe");
842 890
843 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844 croak ("cannot set result pipe to nonblocking mode");
845
846 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847 croak ("cannot set result pipe to nonblocking mode");
848}
849
850/*****************************************************************************/
851/* work around various missing functions */
852
853#if !HAVE_PREADWRITE
854# define pread aio_pread
855# define pwrite aio_pwrite
856
857/*
858 * make our pread/pwrite safe against themselves, but not against
859 * normal read/write by using a mutex. slows down execution a lot,
860 * but that's your problem, not mine.
861 */
862static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865{
866 ssize_t res;
867 off_t ooffset;
868
869 LOCK (preadwritelock);
870 ooffset = lseek (fd, 0, SEEK_CUR);
871 lseek (fd, offset, SEEK_SET);
872 res = read (fd, buf, count);
873 lseek (fd, ooffset, SEEK_SET);
874 UNLOCK (preadwritelock);
875
876 return res;
877}
878
879static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
880{
881 ssize_t res;
882 off_t ooffset;
883
884 LOCK (preadwritelock);
885 ooffset = lseek (fd, 0, SEEK_CUR);
886 lseek (fd, offset, SEEK_SET);
887 res = write (fd, buf, count);
888 lseek (fd, offset, SEEK_SET);
889 UNLOCK (preadwritelock);
890
891 return res;
892}
893#endif
894
895#if !HAVE_FDATASYNC
896# define fdatasync fsync
897#endif
898
899#if !HAVE_READAHEAD
900# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901
902static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
903{
904 dBUF;
905
906 while (count > 0)
907 {
908 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909
910 pread (fd, aio_buf, len, offset);
911 offset += len;
912 count -= len;
913 }
914
915 errno = 0;
916}
917
918#endif
919
920#if !HAVE_READDIR_R
921# define readdir_r aio_readdir_r
922
923static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926{
927 struct dirent *e;
928 int errorno;
929
930 LOCK (readdirlock);
931
932 e = readdir (dirp);
933 errorno = errno;
934
935 if (e)
936 {
937 *res = ent;
938 strcpy (ent->d_name, e->d_name);
939 }
940 else
941 *res = 0;
942
943 UNLOCK (readdirlock);
944
945 errno = errorno;
946 return e ? 0 : -1;
947}
948#endif
949
950/* sendfile always needs emulation */
951static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
952{
953 ssize_t res;
954
955 if (!count)
956 return 0;
957
958#if HAVE_SENDFILE
959# if __linux
960 res = sendfile (ofd, ifd, &offset, count);
961
962# elif __freebsd
963 /*
964 * Of course, the freebsd sendfile is a dire hack with no thoughts
965 * wasted on making it similar to other I/O functions.
966 */
967 {
968 off_t sbytes;
969 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970
971 if (res < 0 && sbytes)
972 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
973 res = sbytes;
974 }
975
976# elif __hpux
977 res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979# elif __solaris
980 {
981 struct sendfilevec vec;
982 size_t sbytes;
983
984 vec.sfv_fd = ifd;
985 vec.sfv_flag = 0;
986 vec.sfv_off = offset;
987 vec.sfv_len = count;
988
989 res = sendfilev (ofd, &vec, 1, &sbytes);
990
991 if (res < 0 && sbytes)
992 res = sbytes;
993 }
994
995# endif
996#else
997 res = -1;
998 errno = ENOSYS;
999#endif
1000
1001 if (res < 0
1002 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003#if __solaris
1004 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005#endif
1006 )
1007 )
1008 {
1009 /* emulate sendfile. this is a major pain in the ass */
1010 dBUF;
1011
1012 res = 0;
1013
1014 while (count)
1015 {
1016 ssize_t cnt;
1017
1018 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020 if (cnt <= 0)
1021 {
1022 if (cnt && !res) res = -1;
1023 break;
1024 }
1025
1026 cnt = write (ofd, aio_buf, cnt);
1027
1028 if (cnt <= 0)
1029 {
1030 if (cnt && !res) res = -1;
1031 break;
1032 }
1033
1034 offset += cnt;
1035 res += cnt;
1036 count -= cnt;
1037 }
1038 }
1039
1040 return res;
1041}
1042
1043/* read a full directory */
1044static void scandir_ (aio_req req, worker *self)
1045{
1046 DIR *dirp;
1047 union
1048 {
1049 struct dirent d;
1050 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051 } *u;
1052 struct dirent *entp;
1053 char *name, *names;
1054 int memlen = 4096;
1055 int memofs = 0;
1056 int res = 0;
1057 int errorno;
1058
1059 LOCK (wrklock);
1060 self->dirp = dirp = opendir (req->ptr1);
1061 self->dbuf = u = malloc (sizeof (*u));
1062 req->flags |= FLAG_PTR2_FREE;
1063 req->ptr2 = names = malloc (memlen);
1064 UNLOCK (wrklock);
1065
1066 if (dirp && u && names)
1067 for (;;)
1068 {
1069 errno = 0;
1070 readdir_r (dirp, &u->d, &entp);
1071
1072 if (!entp)
1073 break;
1074
1075 name = entp->d_name;
1076
1077 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078 {
1079 int len = strlen (name) + 1;
1080
1081 res++;
1082
1083 while (memofs + len > memlen)
1084 {
1085 memlen *= 2;
1086 LOCK (wrklock);
1087 req->ptr2 = names = realloc (names, memlen);
1088 UNLOCK (wrklock);
1089
1090 if (!names)
1091 break;
1092 }
1093
1094 memcpy (names + memofs, name, len);
1095 memofs += len;
1096 }
1097 }
1098
1099 if (errno)
1100 res = -1;
1101
1102 req->result = res;
1103}
1104
1105/*****************************************************************************/
1106
1107static void *aio_proc (void *thr_arg)
1108{
1109 aio_req req;
1110 struct timespec ts;
1111 worker *self = (worker *)thr_arg;
1112
1113 /* try to distribute timeouts somewhat evenly */
1114 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115 * (1000000000UL / 1024UL);
1116
1117 for (;;)
1118 {
1119 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121 LOCK (reqlock);
1122
1123 for (;;)
1124 {
1125 self->req = req = reqq_shift (&req_queue);
1126
1127 if (req)
1128 break;
1129
1130 ++idle;
1131
1132 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133 == ETIMEDOUT)
1134 {
1135 if (idle > max_idle)
1136 {
1137 --idle;
1138 UNLOCK (reqlock);
1139 LOCK (wrklock);
1140 --started;
1141 UNLOCK (wrklock);
1142 goto quit;
1143 }
1144
1145 /* we are allowed to idle, so do so without any timeout */
1146 pthread_cond_wait (&reqwait, &reqlock);
1147 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148 }
1149
1150 --idle;
1151 }
1152
1153 --nready;
1154
1155 UNLOCK (reqlock);
1156
1157 errno = 0; /* strictly unnecessary */
1158
1159 if (!(req->flags & FLAG_CANCELLED))
1160 switch (req->type)
1161 {
1162 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173 case REQ_CLOSE: req->result = close (req->int1); break;
1174 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1177 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1178 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1179 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1180 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1181
1182 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1183 case REQ_FSYNC: req->result = fsync (req->int1); break;
1184 case REQ_READDIR: scandir_ (req, self); break;
1185
1186 case REQ_BUSY:
1187 {
1188 struct timeval tv;
1189
1190 tv.tv_sec = req->int1;
1191 tv.tv_usec = req->int2;
1192
1193 req->result = select (0, 0, 0, 0, &tv);
1194 }
1195
1196 case REQ_GROUP:
1197 case REQ_NOP:
1198 break;
1199
1200 case REQ_QUIT:
1201 goto quit;
1202
1203 default:
1204 req->result = ENOSYS;
1205 break;
1206 }
1207
1208 req->errorno = errno;
1209
1210 LOCK (reslock);
1211
1212 ++npending;
1213
1214 if (!reqq_push (&res_queue, req))
1215 {
1216 /* write a dummy byte to the pipe so fh becomes ready */
1217 write (respipe [1], &respipe, 1);
1218
1219 /* optionally signal the main thread asynchronously */
1220 if (main_sig)
1221 pthread_kill (main_tid, main_sig);
1222 }
1223
1224 self->req = 0;
1225 worker_clear (self);
1226
1227 UNLOCK (reslock);
1228 }
1229
1230quit:
1231 LOCK (wrklock);
1232 worker_free (self);
1233 UNLOCK (wrklock);
1234
1235 return 0;
1236}
1237
1238/*****************************************************************************/
1239
1240static void atfork_prepare (void)
1241{
1242 LOCK (wrklock);
1243 LOCK (reqlock);
1244 LOCK (reslock);
1245#if !HAVE_PREADWRITE
1246 LOCK (preadwritelock);
1247#endif
1248#if !HAVE_READDIR_R
1249 LOCK (readdirlock);
1250#endif
1251}
1252
1253static void atfork_parent (void)
1254{
1255#if !HAVE_READDIR_R
1256 UNLOCK (readdirlock);
1257#endif
1258#if !HAVE_PREADWRITE
1259 UNLOCK (preadwritelock);
1260#endif
1261 UNLOCK (reslock);
1262 UNLOCK (reqlock);
1263 UNLOCK (wrklock);
1264}
1265
1266static void atfork_child (void)
1267{
1268 aio_req prv;
1269
1270 while (prv = reqq_shift (&req_queue))
1271 req_free (prv);
1272
1273 while (prv = reqq_shift (&res_queue))
1274 req_free (prv);
1275
1276 while (wrk_first.next != &wrk_first)
1277 {
1278 worker *wrk = wrk_first.next;
1279
1280 if (wrk->req)
1281 req_free (wrk->req);
1282
1283 worker_clear (wrk);
1284 worker_free (wrk);
1285 }
1286
1287 started = 0;
1288 idle = 0;
1289 nreqs = 0;
1290 nready = 0;
1291 npending = 0;
1292
1293 close (respipe [0]);
1294 close (respipe [1]);
1295 create_pipe ();
1296
1297 atfork_parent ();
1298}
1299
1300#define dREQ \
1301 aio_req req; \
1302 int req_pri = next_pri; \
1303 next_pri = DEFAULT_PRI + PRI_BIAS; \
1304 \
1305 if (SvOK (callback) && !SvROK (callback)) \
1306 croak ("callback must be undef or of reference type"); \
1307 \
1308 Newz (0, req, 1, aio_cb); \
1309 if (!req) \
1310 croak ("out of memory during aio_req allocation"); \
1311 \
1312 req->callback = newSVsv (callback); \
1313 req->pri = req_pri
1314
1315#define REQ_SEND \
1316 req_send (req); \
1317 \
1318 if (GIMME_V != G_VOID) \
1319 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1320
1321MODULE = IO::AIO PACKAGE = IO::AIO 891MODULE = IO::AIO PACKAGE = IO::AIO
1322 892
1323PROTOTYPES: ENABLE 893PROTOTYPES: ENABLE
1324 894
1325BOOT: 895BOOT:
1326{ 896{
897 static const struct {
898 const char *name;
899 IV iv;
900 } *civ, const_iv[] = {
901# define const_niv(name, value) { # name, (IV) value },
902# define const_iv(name) { # name, (IV) name },
903# define const_eio(name) { # name, (IV) EIO_ ## name },
904
905 /* you have to re-run ./gendef0 after adding/Removing any constants here */
906
907 const_iv (ENOSYS)
908 const_iv (EXDEV)
909 const_iv (EBADR)
910
911 const_iv (O_RDONLY)
912 const_iv (O_WRONLY)
913 const_iv (O_RDWR)
914 const_iv (O_CREAT)
915 const_iv (O_TRUNC)
916 const_iv (O_EXCL)
917 const_iv (O_APPEND)
918
919 const_iv (O_ASYNC)
920 const_iv (O_DIRECT)
921 const_iv (O_NOATIME)
922
923 const_iv (O_CLOEXEC)
924 const_iv (O_NOCTTY)
925 const_iv (O_NOFOLLOW)
926 const_iv (O_NONBLOCK)
927 const_iv (O_EXEC)
928 const_iv (O_SEARCH)
929 const_iv (O_DIRECTORY)
930 const_iv (O_DSYNC)
931 const_iv (O_RSYNC)
932 const_iv (O_SYNC)
933 const_iv (O_TTY_INIT)
934
935 const_iv (S_IFIFO)
936 const_iv (S_IFCHR)
937 const_iv (S_IFBLK)
938 const_iv (S_IFLNK)
939 const_iv (S_IFREG)
940 const_iv (S_IFDIR)
941 const_iv (S_IFWHT)
942 const_iv (S_IFSOCK)
943 const_iv (S_IFMT)
944
945 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
946 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
947 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
948 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
949 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
950 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
951
952 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
953 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
954 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
955 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
956 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
957
958 const_iv (ST_RDONLY)
959 const_iv (ST_NOSUID)
960 const_iv (ST_NODEV)
961 const_iv (ST_NOEXEC)
962 const_iv (ST_SYNCHRONOUS)
963 const_iv (ST_MANDLOCK)
964 const_iv (ST_WRITE)
965 const_iv (ST_APPEND)
966 const_iv (ST_IMMUTABLE)
967 const_iv (ST_NOATIME)
968 const_iv (ST_NODIRATIME)
969 const_iv (ST_RELATIME)
970
971 const_iv (PROT_NONE)
972 const_iv (PROT_EXEC)
973 const_iv (PROT_READ)
974 const_iv (PROT_WRITE)
975
976 /*const_iv (MAP_FIXED)*/
977 const_iv (MAP_PRIVATE)
978 const_iv (MAP_SHARED)
979 const_iv (MAP_ANONYMOUS)
980
981 /* linuxish */
982 const_iv (MAP_HUGETLB)
983 const_iv (MAP_LOCKED)
984 const_iv (MAP_NORESERVE)
985 const_iv (MAP_POPULATE)
986 const_iv (MAP_NONBLOCK)
987
988 const_iv (FIEMAP_FLAG_SYNC)
989 const_iv (FIEMAP_FLAG_XATTR)
990 const_iv (FIEMAP_FLAGS_COMPAT)
991 const_iv (FIEMAP_EXTENT_LAST)
992 const_iv (FIEMAP_EXTENT_UNKNOWN)
993 const_iv (FIEMAP_EXTENT_DELALLOC)
994 const_iv (FIEMAP_EXTENT_ENCODED)
995 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
996 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
997 const_iv (FIEMAP_EXTENT_DATA_INLINE)
998 const_iv (FIEMAP_EXTENT_DATA_TAIL)
999 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1000 const_iv (FIEMAP_EXTENT_MERGED)
1001 const_iv (FIEMAP_EXTENT_SHARED)
1002
1003 const_iv (SPLICE_F_MOVE)
1004 const_iv (SPLICE_F_NONBLOCK)
1005 const_iv (SPLICE_F_MORE)
1006 const_iv (SPLICE_F_GIFT)
1007
1008 const_iv (SEEK_DATA)
1009 const_iv (SEEK_HOLE)
1010
1011 /* libeio constants */
1012 const_eio (SEEK_SET)
1013 const_eio (SEEK_CUR)
1014 const_eio (SEEK_END)
1015
1016 const_eio (MCL_FUTURE)
1017 const_eio (MCL_CURRENT)
1018
1019 const_eio (MS_ASYNC)
1020 const_eio (MS_INVALIDATE)
1021 const_eio (MS_SYNC)
1022
1023 const_eio (MT_MODIFY)
1024
1025 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1026 const_eio (SYNC_FILE_RANGE_WRITE)
1027 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1028
1029 const_eio (FALLOC_FL_KEEP_SIZE)
1030 const_eio (FALLOC_FL_PUNCH_HOLE)
1031
1032 const_eio (READDIR_DENTS)
1033 const_eio (READDIR_DIRS_FIRST)
1034 const_eio (READDIR_STAT_ORDER)
1035 const_eio (READDIR_FOUND_UNKNOWN)
1036
1037 const_eio (DT_UNKNOWN)
1038 const_eio (DT_FIFO)
1039 const_eio (DT_CHR)
1040 const_eio (DT_DIR)
1041 const_eio (DT_BLK)
1042 const_eio (DT_REG)
1043 const_eio (DT_LNK)
1044 const_eio (DT_SOCK)
1045 const_eio (DT_WHT)
1046 };
1047
1327 HV *stash = gv_stashpv ("IO::AIO", 1); 1048 aio_stash = gv_stashpv ("IO::AIO" , 1);
1049 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1050 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1051 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1328 1052
1329 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1053 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1330 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1054 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1331 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1332 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1333 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1334 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1335 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1336 1055
1337 create_pipe (); 1056 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1338 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1339}
1340 1057
1058 reinit ();
1059}
1060
1341void 1061void
1062reinit ()
1063 PROTOTYPE:
1064
1065void
1342max_poll_reqs (int nreqs) 1066max_poll_reqs (unsigned int nreqs)
1343 PROTOTYPE: $ 1067 PROTOTYPE: $
1344 CODE: 1068 CODE:
1345 max_poll_reqs = nreqs; 1069 eio_set_max_poll_reqs (nreqs);
1346 1070
1347void 1071void
1348max_poll_time (double nseconds) 1072max_poll_time (double nseconds)
1349 PROTOTYPE: $ 1073 PROTOTYPE: $
1350 CODE: 1074 CODE:
1351 max_poll_time = nseconds * AIO_TICKS; 1075 eio_set_max_poll_time (nseconds);
1352 1076
1353void 1077void
1354min_parallel (int nthreads) 1078min_parallel (unsigned int nthreads)
1355 PROTOTYPE: $
1356
1357void
1358max_parallel (int nthreads)
1359 PROTOTYPE: $
1360
1361void
1362max_idle (int nthreads)
1363 PROTOTYPE: $ 1079 PROTOTYPE: $
1364 CODE: 1080 CODE:
1365 set_max_idle (nthreads); 1081 eio_set_min_parallel (nthreads);
1366 1082
1367int 1083void
1368max_outstanding (int maxreqs) 1084max_parallel (unsigned int nthreads)
1369 PROTOTYPE: $ 1085 PROTOTYPE: $
1370 CODE: 1086 CODE:
1371 RETVAL = max_outstanding; 1087 eio_set_max_parallel (nthreads);
1088
1089void
1090max_idle (unsigned int nthreads)
1091 PROTOTYPE: $
1092 CODE:
1093 eio_set_max_idle (nthreads);
1094
1095void
1096idle_timeout (unsigned int seconds)
1097 PROTOTYPE: $
1098 CODE:
1099 eio_set_idle_timeout (seconds);
1100
1101void
1102max_outstanding (unsigned int maxreqs)
1103 PROTOTYPE: $
1104 CODE:
1372 max_outstanding = maxreqs; 1105 max_outstanding = maxreqs;
1373 OUTPUT:
1374 RETVAL
1375 1106
1376void 1107void
1377aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1108aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1378 SV8 * pathname
1379 int flags
1380 int mode
1381 SV * callback
1382 PROTOTYPE: $$$;$
1383 PPCODE: 1109 PPCODE:
1384{ 1110{
1385 dREQ; 1111 dREQ;
1386 1112
1113 req->type = EIO_WD_OPEN;
1114 req_set_path1 (req, pathname);
1115
1116 REQ_SEND;
1117}
1118
1119void
1120aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1121 PPCODE:
1122{
1123 dREQ;
1124
1387 req->type = REQ_OPEN; 1125 req->type = EIO_OPEN;
1388 req->sv1 = newSVsv (pathname); 1126 req_set_path1 (req, pathname);
1389 req->ptr1 = SvPVbyte_nolen (req->sv1);
1390 req->int1 = flags; 1127 req->int1 = flags;
1391 req->mode = mode; 1128 req->int2 = mode;
1392 1129
1393 REQ_SEND; 1130 REQ_SEND;
1394} 1131}
1395 1132
1396void 1133void
1397aio_close (fh,callback=&PL_sv_undef) 1134aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398 SV * fh
1399 SV * callback
1400 PROTOTYPE: $;$
1401 ALIAS: 1135 ALIAS:
1402 aio_close = REQ_CLOSE
1403 aio_fsync = REQ_FSYNC 1136 aio_fsync = EIO_FSYNC
1404 aio_fdatasync = REQ_FDATASYNC 1137 aio_fdatasync = EIO_FDATASYNC
1138 aio_syncfs = EIO_SYNCFS
1405 PPCODE: 1139 PPCODE:
1406{ 1140{
1141 int fd = s_fileno_croak (fh, 0);
1407 dREQ; 1142 dREQ;
1408 1143
1409 req->type = ix; 1144 req->type = ix;
1410 req->fh = newSVsv (fh); 1145 req->sv1 = newSVsv (fh);
1411 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1146 req->int1 = fd;
1412 1147
1413 REQ_SEND (req); 1148 REQ_SEND;
1414} 1149}
1415 1150
1416void 1151void
1152aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1153 PPCODE:
1154{
1155 int fd = s_fileno_croak (fh, 0);
1156 dREQ;
1157
1158 req->type = EIO_SYNC_FILE_RANGE;
1159 req->sv1 = newSVsv (fh);
1160 req->int1 = fd;
1161 req->offs = offset;
1162 req->size = nbytes;
1163 req->int2 = flags;
1164
1165 REQ_SEND;
1166}
1167
1168void
1169aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1170 PPCODE:
1171{
1172 int fd = s_fileno_croak (fh, 0);
1173 dREQ;
1174
1175 req->type = EIO_FALLOCATE;
1176 req->sv1 = newSVsv (fh);
1177 req->int1 = fd;
1178 req->int2 = mode;
1179 req->offs = offset;
1180 req->size = len;
1181
1182 REQ_SEND;
1183}
1184
1185void
1186aio_close (SV *fh, SV *callback=&PL_sv_undef)
1187 PPCODE:
1188{
1189 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1190 int fd = s_fileno_croak (fh, 0);
1191 dREQ;
1192
1193 if (expect_false (close_fd < 0))
1194 {
1195 int pipefd [2];
1196
1197 if (
1198#ifdef _WIN32
1199 _pipe (pipefd, 1, _O_BINARY) < 0
1200#else
1201 pipe (pipefd) < 0
1202 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1203#endif
1204 || close (pipefd [1]) < 0
1205 )
1206 abort (); /*D*/
1207
1208 close_fd = pipefd [0];
1209 }
1210
1211 req->type = EIO_DUP2;
1212 req->int1 = close_fd;
1213 req->sv2 = newSVsv (fh);
1214 req->int2 = fd;
1215
1216 REQ_SEND;
1217}
1218
1219void
1220aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1221 PPCODE:
1222{
1223 int fd = s_fileno_croak (fh, 0);
1224 dREQ;
1225
1226 req->type = EIO_SEEK;
1227 req->sv1 = newSVsv (fh);
1228 req->int1 = fd;
1229 req->offs = SvVAL64 (offset);
1230 req->int2 = whence;
1231
1232 REQ_SEND;
1233}
1234
1235void
1417aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1236aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1418 SV * fh
1419 UV offset
1420 UV length
1421 SV8 * data
1422 UV dataoffset
1423 SV * callback
1424 ALIAS: 1237 ALIAS:
1425 aio_read = REQ_READ 1238 aio_read = EIO_READ
1426 aio_write = REQ_WRITE 1239 aio_write = EIO_WRITE
1427 PROTOTYPE: $$$$$;$
1428 PPCODE: 1240 PPCODE:
1429{ 1241{
1430 STRLEN svlen; 1242 STRLEN svlen;
1243 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1431 char *svptr = SvPVbyte (data, svlen); 1244 char *svptr = SvPVbyte (data, svlen);
1432 1245 UV len = SvUV (length);
1433 SvUPGRADE (data, SVt_PV);
1434 SvPOK_on (data);
1435 1246
1436 if (dataoffset < 0) 1247 if (dataoffset < 0)
1437 dataoffset += svlen; 1248 dataoffset += svlen;
1438 1249
1439 if (dataoffset < 0 || dataoffset > svlen) 1250 if (dataoffset < 0 || dataoffset > svlen)
1440 croak ("data offset outside of string"); 1251 croak ("dataoffset outside of data scalar");
1441 1252
1442 if (ix == REQ_WRITE) 1253 if (ix == EIO_WRITE)
1443 { 1254 {
1444 /* write: check length and adjust. */ 1255 /* write: check length and adjust. */
1445 if (length < 0 || length + dataoffset > svlen) 1256 if (!SvOK (length) || len + dataoffset > svlen)
1446 length = svlen - dataoffset; 1257 len = svlen - dataoffset;
1447 } 1258 }
1448 else 1259 else
1449 { 1260 {
1450 /* read: grow scalar as necessary */ 1261 /* read: check type and grow scalar as necessary */
1262 SvUPGRADE (data, SVt_PV);
1263 if (SvLEN (data) >= SvCUR (data))
1451 svptr = SvGROW (data, length + dataoffset + 1); 1264 svptr = SvGROW (data, len + dataoffset + 1);
1265 else if (SvCUR (data) < len + dataoffset)
1266 croak ("length + dataoffset outside of scalar, and cannot grow");
1452 } 1267 }
1453
1454 if (length < 0)
1455 croak ("length must not be negative");
1456 1268
1457 { 1269 {
1458 dREQ; 1270 dREQ;
1459 1271
1460 req->type = ix; 1272 req->type = ix;
1461 req->fh = newSVsv (fh); 1273 req->sv1 = newSVsv (fh);
1462 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1274 req->int1 = fd;
1463 : IoOFP (sv_2io (fh))); 1275 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464 req->offs = offset;
1465 req->size = length; 1276 req->size = len;
1466 req->sv1 = SvREFCNT_inc (data); 1277 req->sv2 = SvREFCNT_inc (data);
1467 req->ptr1 = (char *)svptr + dataoffset; 1278 req->ptr2 = (char *)svptr + dataoffset;
1468 req->stroffset = dataoffset; 1279 req->stroffset = dataoffset;
1469 1280
1470 if (!SvREADONLY (data)) 1281 if (!SvREADONLY (data))
1471 { 1282 {
1472 SvREADONLY_on (data); 1283 SvREADONLY_on (data);
1473 req->flags |= FLAG_SV1_RO_OFF; 1284 req->flags |= FLAG_SV2_RO_OFF;
1474 } 1285 }
1475 1286
1476 REQ_SEND; 1287 REQ_SEND;
1477 } 1288 }
1478} 1289}
1479 1290
1480void 1291void
1481aio_readlink (path,callback=&PL_sv_undef) 1292aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1482 SV8 * path 1293 ALIAS:
1483 SV * callback 1294 aio_readlink = EIO_READLINK
1484 PROTOTYPE: $$;$ 1295 aio_realpath = EIO_REALPATH
1485 PPCODE: 1296 PPCODE:
1486{ 1297{
1487 SV *data;
1488 dREQ; 1298 dREQ;
1489 1299
1490 data = newSV (NAME_MAX);
1491 SvPOK_on (data);
1492
1493 req->type = REQ_READLINK; 1300 req->type = ix;
1494 req->fh = newSVsv (path); 1301 req_set_path1 (req, pathname);
1495 req->ptr2 = SvPVbyte_nolen (req->fh);
1496 req->sv1 = data;
1497 req->ptr1 = SvPVbyte_nolen (data);
1498 1302
1499 REQ_SEND; 1303 REQ_SEND;
1500} 1304}
1501 1305
1502void 1306void
1503aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1307aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1504 SV * out_fh
1505 SV * in_fh
1506 UV in_offset
1507 UV length
1508 SV * callback
1509 PROTOTYPE: $$$$;$
1510 PPCODE: 1308 PPCODE:
1511{ 1309{
1310 int ifd = s_fileno_croak (in_fh , 0);
1311 int ofd = s_fileno_croak (out_fh, 1);
1512 dREQ; 1312 dREQ;
1513 1313
1514 req->type = REQ_SENDFILE; 1314 req->type = EIO_SENDFILE;
1515 req->fh = newSVsv (out_fh); 1315 req->sv1 = newSVsv (out_fh);
1516 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1316 req->int1 = ofd;
1517 req->sv2 = newSVsv (in_fh); 1317 req->sv2 = newSVsv (in_fh);
1518 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1318 req->int2 = ifd;
1519 req->offs = in_offset; 1319 req->offs = in_offset;
1520 req->size = length; 1320 req->size = length;
1521 1321
1522 REQ_SEND; 1322 REQ_SEND;
1523} 1323}
1524 1324
1525void 1325void
1526aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1326aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1527 SV * fh
1528 UV offset
1529 IV length
1530 SV * callback
1531 PROTOTYPE: $$$;$
1532 PPCODE: 1327 PPCODE:
1533{ 1328{
1329 int fd = s_fileno_croak (fh, 0);
1534 dREQ; 1330 dREQ;
1535 1331
1536 req->type = REQ_READAHEAD; 1332 req->type = EIO_READAHEAD;
1537 req->fh = newSVsv (fh); 1333 req->sv1 = newSVsv (fh);
1538 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1334 req->int1 = fd;
1539 req->offs = offset; 1335 req->offs = offset;
1540 req->size = length; 1336 req->size = length;
1541 1337
1542 REQ_SEND; 1338 REQ_SEND;
1543} 1339}
1544 1340
1545void 1341void
1546aio_stat (fh_or_path,callback=&PL_sv_undef) 1342aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1547 SV8 * fh_or_path
1548 SV * callback
1549 ALIAS: 1343 ALIAS:
1550 aio_stat = REQ_STAT 1344 aio_stat = EIO_STAT
1551 aio_lstat = REQ_LSTAT 1345 aio_lstat = EIO_LSTAT
1346 aio_statvfs = EIO_STATVFS
1552 PPCODE: 1347 PPCODE:
1553{ 1348{
1554 dREQ; 1349 dREQ;
1555 1350
1556 req->ptr2 = malloc (sizeof (Stat_t)); 1351 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1557 if (!req->ptr2)
1558 {
1559 req_free (req);
1560 croak ("out of memory during aio_stat statdata allocation");
1561 }
1562
1563 req->flags |= FLAG_PTR2_FREE;
1564
1565 if (SvPOK (fh_or_path))
1566 {
1567 req->type = ix;
1568 req->sv1 = newSVsv (fh_or_path);
1569 req->ptr1 = SvPVbyte_nolen (req->sv1);
1570 }
1571 else
1572 {
1573 req->type = REQ_FSTAT;
1574 req->fh = newSVsv (fh_or_path);
1575 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576 }
1577 1352
1578 REQ_SEND; 1353 REQ_SEND;
1579} 1354}
1580 1355
1356UV
1357major (UV dev)
1358 ALIAS:
1359 minor = 1
1360 CODE:
1361 RETVAL = ix ? major (dev) : minor (dev);
1362 OUTPUT:
1363 RETVAL
1364
1365UV
1366makedev (UV maj, UV min)
1367 CODE:
1368 RETVAL = makedev (maj, min);
1369 OUTPUT:
1370 RETVAL
1371
1581void 1372void
1373aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1374 PPCODE:
1375{
1376 dREQ;
1377
1378 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1379 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1380 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1381
1382 REQ_SEND;
1383}
1384
1385void
1386aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1387 PPCODE:
1388{
1389 dREQ;
1390
1391 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1392 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1393
1394 REQ_SEND;
1395}
1396
1397void
1398aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1399 PPCODE:
1400{
1401 dREQ;
1402
1403 req->int2 = mode;
1404 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1405
1406 REQ_SEND;
1407}
1408
1409void
1410aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1411 PPCODE:
1412{
1413 dREQ;
1414
1415 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1416 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1417 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1418
1419 REQ_SEND;
1420}
1421
1422void
1423aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1424 PPCODE:
1425{
1426 dREQ;
1427
1428 req->type = EIO_READDIR;
1429 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1430
1431 if (flags & EIO_READDIR_DENTS)
1432 req->int1 |= EIO_READDIR_CUSTOM2;
1433
1434 req_set_path1 (req, pathname);
1435
1436 REQ_SEND;
1437}
1438
1439void
1440aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1441 PPCODE:
1442{
1443 dREQ;
1444
1445 req->type = EIO_MKDIR;
1446 req->int2 = mode;
1447 req_set_path1 (req, pathname);
1448
1449 REQ_SEND;
1450}
1451
1452void
1582aio_unlink (pathname,callback=&PL_sv_undef) 1453aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1583 SV8 * pathname
1584 SV * callback
1585 ALIAS: 1454 ALIAS:
1586 aio_unlink = REQ_UNLINK 1455 aio_unlink = EIO_UNLINK
1587 aio_rmdir = REQ_RMDIR 1456 aio_rmdir = EIO_RMDIR
1588 aio_readdir = REQ_READDIR 1457 aio_readdir = EIO_READDIR
1589 PPCODE: 1458 PPCODE:
1590{ 1459{
1591 dREQ; 1460 dREQ;
1592 1461
1593 req->type = ix; 1462 req->type = ix;
1594 req->sv1 = newSVsv (pathname); 1463 req_set_path1 (req, pathname);
1595 req->ptr1 = SvPVbyte_nolen (req->sv1);
1596 1464
1597 REQ_SEND; 1465 REQ_SEND;
1598} 1466}
1599 1467
1600void 1468void
1601aio_link (oldpath,newpath,callback=&PL_sv_undef) 1469aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1602 SV8 * oldpath
1603 SV8 * newpath
1604 SV * callback
1605 ALIAS: 1470 ALIAS:
1606 aio_link = REQ_LINK 1471 aio_link = EIO_LINK
1607 aio_symlink = REQ_SYMLINK 1472 aio_symlink = EIO_SYMLINK
1608 aio_rename = REQ_RENAME 1473 aio_rename = EIO_RENAME
1609 PPCODE: 1474 PPCODE:
1610{ 1475{
1476 eio_wd wd2 = 0;
1611 dREQ; 1477 dREQ;
1612 1478
1613 req->type = ix; 1479 req->type = ix;
1614 req->fh = newSVsv (oldpath); 1480 req_set_path1 (req, oldpath);
1615 req->ptr2 = SvPVbyte_nolen (req->fh); 1481 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1616 req->sv1 = newSVsv (newpath); 1482 req->int3 = (long)wd2;
1617 req->ptr1 = SvPVbyte_nolen (req->sv1);
1618 1483
1619 REQ_SEND; 1484 REQ_SEND;
1620} 1485}
1621 1486
1622void 1487void
1623aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1488aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1624 SV8 * pathname
1625 SV * callback
1626 UV mode
1627 UV dev
1628 PPCODE: 1489 PPCODE:
1629{ 1490{
1630 dREQ; 1491 dREQ;
1631 1492
1632 req->type = REQ_MKNOD; 1493 req->type = EIO_MKNOD;
1633 req->sv1 = newSVsv (pathname);
1634 req->ptr1 = SvPVbyte_nolen (req->sv1);
1635 req->mode = (mode_t)mode; 1494 req->int2 = (mode_t)mode;
1636 req->offs = dev; 1495 req->offs = dev;
1496 req_set_path1 (req, pathname);
1637 1497
1638 REQ_SEND; 1498 REQ_SEND;
1639} 1499}
1640 1500
1641void 1501void
1502aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1503 ALIAS:
1504 aio_mtouch = EIO_MTOUCH
1505 aio_msync = EIO_MSYNC
1506 PPCODE:
1507{
1508 STRLEN svlen;
1509 char *svptr = SvPVbyte (data, svlen);
1510 UV len = SvUV (length);
1511
1512 if (offset < 0)
1513 offset += svlen;
1514
1515 if (offset < 0 || offset > svlen)
1516 croak ("offset outside of scalar");
1517
1518 if (!SvOK (length) || len + offset > svlen)
1519 len = svlen - offset;
1520
1521 {
1522 dREQ;
1523
1524 req->type = ix;
1525 req->sv2 = SvREFCNT_inc (data);
1526 req->ptr2 = (char *)svptr + offset;
1527 req->size = len;
1528 req->int1 = flags;
1529
1530 REQ_SEND;
1531 }
1532}
1533
1534void
1535aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1536 PPCODE:
1537{
1538 STRLEN svlen;
1539 char *svptr = SvPVbyte (data, svlen);
1540 UV len = SvUV (length);
1541
1542 if (offset < 0)
1543 offset += svlen;
1544
1545 if (offset < 0 || offset > svlen)
1546 croak ("offset outside of scalar");
1547
1548 if (!SvOK (length) || len + offset > svlen)
1549 len = svlen - offset;
1550
1551 {
1552 dREQ;
1553
1554 req->type = EIO_MLOCK;
1555 req->sv2 = SvREFCNT_inc (data);
1556 req->ptr2 = (char *)svptr + offset;
1557 req->size = len;
1558
1559 REQ_SEND;
1560 }
1561}
1562
1563void
1564aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1565 PPCODE:
1566{
1567 dREQ;
1568
1569 req->type = EIO_MLOCKALL;
1570 req->int1 = flags;
1571
1572 REQ_SEND;
1573}
1574
1575void
1576aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1577 PPCODE:
1578{
1579 int fd = s_fileno_croak (fh, 0);
1580 dREQ;
1581
1582 req->type = EIO_CUSTOM;
1583 req->sv1 = newSVsv (fh);
1584 req->int1 = fd;
1585
1586 req->feed = fiemap;
1587#if HAVE_FIEMAP
1588 /* keep our fingers crossed that the next two types are 64 bit */
1589 req->offs = start;
1590 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1591 req->int2 = flags;
1592 req->int3 = SvOK (count) ? SvIV (count) : -1;
1593#endif
1594
1595 REQ_SEND;
1596}
1597
1598void
1642aio_busy (delay,callback=&PL_sv_undef) 1599aio_busy (double delay, SV *callback=&PL_sv_undef)
1643 double delay
1644 SV * callback
1645 PPCODE: 1600 PPCODE:
1646{ 1601{
1647 dREQ; 1602 dREQ;
1648 1603
1649 req->type = REQ_BUSY; 1604 req->type = EIO_BUSY;
1650 req->int1 = delay < 0. ? 0 : delay; 1605 req->nv1 = delay < 0. ? 0. : delay;
1651 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1652 1606
1653 REQ_SEND; 1607 REQ_SEND;
1654} 1608}
1655 1609
1656void 1610void
1657aio_group (callback=&PL_sv_undef) 1611aio_group (SV *callback=&PL_sv_undef)
1658 SV * callback
1659 PROTOTYPE: ;$
1660 PPCODE: 1612 PPCODE:
1661{ 1613{
1662 dREQ; 1614 dREQ;
1663 1615
1664 req->type = REQ_GROUP; 1616 req->type = EIO_GROUP;
1665 1617
1666 req_send (req); 1618 req_submit (req);
1667 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1619 XPUSHs (req_sv (req, aio_grp_stash));
1668} 1620}
1669 1621
1670void 1622void
1671aio_nop (callback=&PL_sv_undef) 1623aio_nop (SV *callback=&PL_sv_undef)
1672 SV * callback 1624 ALIAS:
1625 aio_nop = EIO_NOP
1626 aio_sync = EIO_SYNC
1673 PPCODE: 1627 PPCODE:
1674{ 1628{
1675 dREQ; 1629 dREQ;
1676 1630
1677 req->type = REQ_NOP; 1631 req->type = ix;
1678 1632
1679 REQ_SEND; 1633 REQ_SEND;
1680} 1634}
1681 1635
1682int 1636int
1683aioreq_pri (int pri = 0) 1637aioreq_pri (int pri = 0)
1684 PROTOTYPE: ;$
1685 CODE: 1638 CODE:
1686 RETVAL = next_pri - PRI_BIAS; 1639 RETVAL = next_pri;
1687 if (items > 0) 1640 if (items > 0)
1688 { 1641 {
1689 if (pri < PRI_MIN) pri = PRI_MIN; 1642 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690 if (pri > PRI_MAX) pri = PRI_MAX; 1643 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691 next_pri = pri + PRI_BIAS; 1644 next_pri = pri;
1692 } 1645 }
1693 OUTPUT: 1646 OUTPUT:
1694 RETVAL 1647 RETVAL
1695 1648
1696void 1649void
1697aioreq_nice (int nice = 0) 1650aioreq_nice (int nice = 0)
1698 CODE: 1651 CODE:
1699 nice = next_pri - nice; 1652 nice = next_pri - nice;
1700 if (nice < PRI_MIN) nice = PRI_MIN; 1653 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701 if (nice > PRI_MAX) nice = PRI_MAX; 1654 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702 next_pri = nice + PRI_BIAS; 1655 next_pri = nice;
1703 1656
1704void 1657void
1705flush () 1658flush ()
1706 PROTOTYPE:
1707 CODE: 1659 CODE:
1708 while (nreqs) 1660 while (eio_nreqs ())
1709 { 1661 {
1710 poll_wait (); 1662 poll_wait ();
1711 poll_cb (); 1663 poll_cb ();
1712 } 1664 }
1713 1665
1714int 1666int
1715poll() 1667poll ()
1716 PROTOTYPE:
1717 CODE: 1668 CODE:
1718 poll_wait (); 1669 poll_wait ();
1719 RETVAL = poll_cb (); 1670 RETVAL = poll_cb ();
1720 OUTPUT: 1671 OUTPUT:
1721 RETVAL 1672 RETVAL
1722 1673
1723int 1674int
1724poll_fileno() 1675poll_fileno ()
1725 PROTOTYPE:
1726 CODE: 1676 CODE:
1727 RETVAL = respipe [0]; 1677 RETVAL = s_epipe_fd (&respipe);
1728 OUTPUT: 1678 OUTPUT:
1729 RETVAL 1679 RETVAL
1730 1680
1731int 1681int
1732poll_cb(...) 1682poll_cb (...)
1733 PROTOTYPE: 1683 PROTOTYPE:
1734 CODE: 1684 CODE:
1735 RETVAL = poll_cb (); 1685 RETVAL = poll_cb ();
1736 OUTPUT: 1686 OUTPUT:
1737 RETVAL 1687 RETVAL
1738 1688
1739void 1689void
1740poll_wait() 1690poll_wait ()
1741 PROTOTYPE:
1742 CODE: 1691 CODE:
1743 poll_wait (); 1692 poll_wait ();
1744 1693
1745void
1746setsig (int signum = SIGIO)
1747 PROTOTYPE: ;$
1748 CODE:
1749{
1750 if (block_sig_level)
1751 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1752
1753 LOCK (reslock);
1754 main_tid = pthread_self ();
1755 main_sig = signum;
1756 UNLOCK (reslock);
1757
1758 if (main_sig && npending)
1759 pthread_kill (main_tid, main_sig);
1760}
1761
1762void
1763aio_block (SV *cb)
1764 PROTOTYPE: &
1765 PPCODE:
1766{
1767 int count;
1768
1769 block_sig ();
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1773 SPAGAIN;
1774 unblock_sig ();
1775
1776 if (SvTRUE (ERRSV))
1777 croak (0);
1778
1779 XSRETURN (count);
1780}
1781
1782int 1694int
1783nreqs() 1695nreqs ()
1784 PROTOTYPE:
1785 CODE: 1696 CODE:
1786 RETVAL = nreqs; 1697 RETVAL = eio_nreqs ();
1787 OUTPUT: 1698 OUTPUT:
1788 RETVAL 1699 RETVAL
1789 1700
1790int 1701int
1791nready() 1702nready ()
1792 PROTOTYPE:
1793 CODE: 1703 CODE:
1794 RETVAL = get_nready (); 1704 RETVAL = eio_nready ();
1795 OUTPUT: 1705 OUTPUT:
1796 RETVAL 1706 RETVAL
1797 1707
1798int 1708int
1799npending() 1709npending ()
1800 PROTOTYPE:
1801 CODE: 1710 CODE:
1802 RETVAL = get_npending (); 1711 RETVAL = eio_npending ();
1803 OUTPUT: 1712 OUTPUT:
1804 RETVAL 1713 RETVAL
1805 1714
1806int 1715int
1807nthreads() 1716nthreads ()
1808 PROTOTYPE:
1809 CODE: 1717 CODE:
1810 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1718 RETVAL = eio_nthreads ();
1811 RETVAL = started;
1812 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813 OUTPUT: 1719 OUTPUT:
1814 RETVAL 1720 RETVAL
1815 1721
1722int
1723fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1724 CODE:
1725 RETVAL = posix_fadvise (fh, offset, length, advice);
1726 OUTPUT:
1727 RETVAL
1728
1729IV
1730sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1731 CODE:
1732 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1733 OUTPUT:
1734 RETVAL
1735
1736void
1737mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1738 PPCODE:
1739 sv_unmagic (scalar, MMAP_MAGIC);
1740{
1741 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1742 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1743 if (addr == (void *)-1)
1744 XSRETURN_NO;
1745
1746 sv_force_normal (scalar);
1747
1748 /* we store the length in mg_obj, as namlen is I32 :/ */
1749 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1750 ->mg_obj = (SV *)length;
1751
1752 SvUPGRADE (scalar, SVt_PV); /* nop... */
1753
1754 if (!(prot & PROT_WRITE))
1755 SvREADONLY_on (scalar);
1756
1757 if (SvLEN (scalar))
1758 Safefree (SvPVX (scalar));
1759
1760 SvPVX (scalar) = (char *)addr;
1761 SvCUR_set (scalar, length);
1762 SvLEN_set (scalar, 0);
1763 SvPOK_only (scalar);
1764
1765 XSRETURN_YES;
1766}
1767
1768void
1769munmap (SV *scalar)
1770 CODE:
1771 sv_unmagic (scalar, MMAP_MAGIC);
1772
1773int
1774madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1775 ALIAS:
1776 mprotect = 1
1777 CODE:
1778{
1779 STRLEN svlen;
1780 void *addr = SvPVbyte (scalar, svlen);
1781 size_t len = SvUV (length);
1782
1783 if (offset < 0)
1784 offset += svlen;
1785
1786 if (offset < 0 || offset > svlen)
1787 croak ("offset outside of scalar");
1788
1789 if (!SvOK (length) || len + offset > svlen)
1790 len = svlen - offset;
1791
1792 addr = (void *)(((intptr_t)addr) + offset);
1793 eio_page_align (&addr, &len);
1794
1795 switch (ix)
1796 {
1797 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1798 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1799 }
1800}
1801 OUTPUT:
1802 RETVAL
1803
1804int
1805munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1806 CODE:
1807{
1808 STRLEN svlen;
1809 void *addr = SvPVbyte (scalar, svlen);
1810 size_t len = SvUV (length);
1811
1812 if (offset < 0)
1813 offset += svlen;
1814
1815 if (offset < 0 || offset > svlen)
1816 croak ("offset outside of scalar");
1817
1818 if (!SvOK (length) || len + offset > svlen)
1819 len = svlen - offset;
1820
1821 addr = (void *)(((intptr_t)addr) + offset);
1822 eio_page_align (&addr, &len);
1823#if _POSIX_MEMLOCK_RANGE
1824 RETVAL = munlock (addr, len);
1825#else
1826 RETVAL = EIO_ENOSYS ();
1827#endif
1828}
1829 OUTPUT:
1830 RETVAL
1831
1832int
1833munlockall ()
1834 CODE:
1835#if _POSIX_MEMLOCK
1836 munlockall ();
1837#else
1838 RETVAL = EIO_ENOSYS ();
1839#endif
1840 OUTPUT:
1841 RETVAL
1842
1843int
1844splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1845 CODE:
1846{
1847#if HAVE_LINUX_SPLICE
1848 loff_t off_in_, off_out_;
1849 RETVAL = splice (
1850 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1851 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1852 length, flags
1853 );
1854#else
1855 RETVAL = EIO_ENOSYS ();
1856#endif
1857}
1858 OUTPUT:
1859 RETVAL
1860
1861int
1862tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1863 CODE:
1864#if HAVE_LINUX_SPLICE
1865 RETVAL = tee (rfh, wfh, length, flags);
1866#else
1867 RETVAL = EIO_ENOSYS ();
1868#endif
1869 OUTPUT:
1870 RETVAL
1871
1872void _on_next_submit (SV *cb)
1873 CODE:
1874 SvREFCNT_dec (on_next_submit);
1875 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1876
1816PROTOTYPES: DISABLE 1877PROTOTYPES: DISABLE
1878
1879MODULE = IO::AIO PACKAGE = IO::AIO::WD
1880
1881BOOT:
1882{
1883 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1884 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1885}
1886
1887void
1888DESTROY (SV *self)
1889 CODE:
1890{
1891 aio_wd wd = SvAIO_WD (self);
1892#if HAVE_AT
1893 {
1894 SV *callback = &PL_sv_undef;
1895 dREQ; /* clobbers next_pri :/ */
1896 next_pri = req->pri; /* restore next_pri */
1897 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1898 req->type = EIO_WD_CLOSE;
1899 req->wd = wd;
1900 REQ_SEND;
1901 }
1902#else
1903 eio_wd_close_sync (wd);
1904#endif
1905}
1817 1906
1818MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1907MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819 1908
1820void 1909void
1821cancel (aio_req_ornot req) 1910cancel (aio_req_ornot req)
1822 CODE: 1911 CODE:
1823 req_cancel (req); 1912 eio_cancel (req);
1824 1913
1825void 1914void
1826cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1915cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1827 CODE: 1916 PPCODE:
1917{
1918 if (GIMME_V != G_VOID)
1919 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1920
1921 if (items > 1)
1922 {
1923 SV *cb_cv =get_cb (callback);
1924
1828 SvREFCNT_dec (req->callback); 1925 SvREFCNT_dec (req->callback);
1829 req->callback = newSVsv (callback); 1926 req->callback = SvREFCNT_inc (cb_cv);
1927 }
1928}
1830 1929
1831MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1930MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832 1931
1833void 1932void
1834add (aio_req grp, ...) 1933add (aio_req grp, ...)
1835 PPCODE: 1934 PPCODE:
1836{ 1935{
1837 int i; 1936 int i;
1838 aio_req req;
1839
1840 if (main_sig && !block_sig_level)
1841 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1842 1937
1843 if (grp->int1 == 2) 1938 if (grp->int1 == 2)
1844 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1939 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845 1940
1846 for (i = 1; i < items; ++i ) 1941 for (i = 1; i < items; ++i )
1847 { 1942 {
1943 aio_req req;
1944
1848 if (GIMME_V != G_VOID) 1945 if (GIMME_V != G_VOID)
1849 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1946 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850 1947
1851 req = SvAIO_REQ (ST (i)); 1948 req = SvAIO_REQ (ST (i));
1852 1949
1853 if (req) 1950 if (req)
1854 { 1951 eio_grp_add (grp, req);
1855 ++grp->size;
1856 req->grp = grp;
1857
1858 req->grp_prev = 0;
1859 req->grp_next = grp->grp_first;
1860
1861 if (grp->grp_first)
1862 grp->grp_first->grp_prev = req;
1863
1864 grp->grp_first = req;
1865 }
1866 } 1952 }
1867} 1953}
1868 1954
1869void 1955void
1870cancel_subs (aio_req_ornot req) 1956cancel_subs (aio_req_ornot req)
… …
1879 AV *av; 1965 AV *av;
1880 1966
1881 grp->errorno = errno; 1967 grp->errorno = errno;
1882 1968
1883 av = newAV (); 1969 av = newAV ();
1970 av_extend (av, items - 1);
1884 1971
1885 for (i = 1; i < items; ++i ) 1972 for (i = 1; i < items; ++i )
1886 av_push (av, newSVsv (ST (i))); 1973 av_push (av, newSVsv (ST (i)));
1887 1974
1888 SvREFCNT_dec (grp->sv1); 1975 SvREFCNT_dec (grp->sv1);
… …
1895 grp->errorno = errorno; 1982 grp->errorno = errorno;
1896 1983
1897void 1984void
1898limit (aio_req grp, int limit) 1985limit (aio_req grp, int limit)
1899 CODE: 1986 CODE:
1900 grp->int2 = limit; 1987 eio_grp_limit (grp, limit);
1901 aio_grp_feed (grp);
1902 1988
1903void 1989void
1904feed (aio_req grp, SV *callback=&PL_sv_undef) 1990feed (aio_req grp, SV *callback=&PL_sv_undef)
1905 CODE: 1991 CODE:
1906{ 1992{
1907 SvREFCNT_dec (grp->sv2); 1993 SvREFCNT_dec (grp->sv2);
1908 grp->sv2 = newSVsv (callback); 1994 grp->sv2 = newSVsv (callback);
1995 grp->feed = aio_grp_feed;
1909 1996
1910 if (grp->int2 <= 0) 1997 if (grp->int2 <= 0)
1911 grp->int2 = 2; 1998 grp->int2 = 2;
1912 1999
1913 aio_grp_feed (grp); 2000 eio_grp_limit (grp, grp->int2);
1914} 2001}
1915 2002

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