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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 2018 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
27#include <limits.h> 16#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 17#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 18#include <sched.h>
32 19
33#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34# if __linux
35# include <sys/sendfile.h>
36# elif __freebsd
37# include <sys/socket.h>
38# include <sys/uio.h> 21# include <sys/mman.h>
39# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
40# include <sys/socket.h> 86 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
43# else 151# else
44# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 153# endif
46#endif 154#endif
47 155
48/* used for struct dirent, AIX doesn't provide it */ 156/* defines all sorts of constants to 0 unless they are already defined */
49#ifndef NAME_MAX 157/* also provides const_iv_ and const_niv_ macros for them */
50# define NAME_MAX 4096 158#include "def0.h"
51#endif
52 159
53#ifndef PTHREAD_STACK_MIN 160#ifndef makedev
54/* care for broken platforms, e.g. windows */ 161# define makedev(maj,min) (((maj) << 8) | (min))
55# define PTHREAD_STACK_MIN 16384
56#endif
57
58#if __ia64
59# define STACKSIZE 65536
60#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61# define STACKSIZE PTHREAD_STACK_MIN
62#else
63# define STACKSIZE 16384
64#endif
65
66/* wether word reads are potentially non-atomic.
67 * this is conservatice, likely most arches this runs
68 * on have atomic word read/writes.
69 */
70#ifndef WORDREAD_UNSAFE
71# if __i386 || __x86_64
72# define WORDREAD_UNSAFE 0
73# else
74# define WORDREAD_UNSAFE 1
75# endif 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
76#endif 165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
77 169
78/* buffer size for various temporary buffers */ 170#if PAGESIZE <= 0
79#define AIO_BUFSIZE 65536 171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
80 173
81#define dBUF \ 174/*****************************************************************************/
82 char *aio_buf; \ 175
83 LOCK (wrklock); \ 176#if !_POSIX_MAPPED_FILES
84 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 177# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
85 UNLOCK (wrklock); \ 178# define munmap(addr,length) EIO_ENOSYS ()
86 if (!aio_buf) \ 179#endif
180
181#if !_POSIX_MEMORY_PROTECTION
182# define mprotect(addr,len,prot) EIO_ENOSYS ()
183#endif
184
185#define FOREIGN_MAGIC PERL_MAGIC_ext
186
187static int ecb_cold
188mmap_free (pTHX_ SV *sv, MAGIC *mg)
189{
190 int old_errno = errno;
191 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
192 errno = old_errno;
193
194 mg->mg_obj = 0; /* just in case */
195
196 SvREADONLY_off (sv);
197
198 if (SvPVX (sv) != mg->mg_ptr)
199 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
200
201 SvCUR_set (sv, 0);
202 SvPVX (sv) = 0;
203 SvOK_off (sv);
204
87 return -1; 205 return 0;
206}
88 207
89enum { 208static MGVTBL mmap_vtbl = {
90 REQ_QUIT, 209 0, 0, 0, 0, mmap_free
91 REQ_OPEN, REQ_CLOSE,
92 REQ_READ, REQ_WRITE, REQ_READAHEAD,
93 REQ_SENDFILE,
94 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95 REQ_FSYNC, REQ_FDATASYNC,
96 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97 REQ_READDIR,
98 REQ_LINK, REQ_SYMLINK,
99 REQ_GROUP, REQ_NOP,
100 REQ_BUSY,
101}; 210};
102 211
103#define AIO_REQ_KLASS "IO::AIO::REQ" 212static int ecb_cold
104#define AIO_GRP_KLASS "IO::AIO::GRP" 213sysfree_free (pTHX_ SV *sv, MAGIC *mg)
105
106typedef struct aio_cb
107{ 214{
108 struct aio_cb *volatile next; 215 free (mg->mg_ptr);
216 mg->mg_obj = 0; /* just in case */
109 217
110 SV *data, *callback; 218 SvREADONLY_off (sv);
111 SV *fh, *fh2;
112 void *dataptr, *data2ptr;
113 Stat_t *statdata;
114 off_t offset;
115 size_t length;
116 ssize_t result;
117 219
118 STRLEN dataoffset; 220 if (SvPVX (sv) != mg->mg_ptr)
119 int type; 221 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
120 int fd, fd2;
121 int errorno;
122 mode_t mode; /* open */
123 222
124 unsigned char flags; 223 SvCUR_set (sv, 0);
125 unsigned char pri; 224 SvPVX (sv) = 0;
225 SvOK_off (sv);
126 226
127 SV *self; /* the perl counterpart of this request, if any */ 227 return 0;
128 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 228}
129} aio_cb;
130 229
131enum { 230static MGVTBL sysfree_vtbl = {
132 FLAG_CANCELLED = 0x01, 231 0, 0, 0, 0, sysfree_free
133}; 232};
134 233
135typedef aio_cb *aio_req; 234/*****************************************************************************/
136typedef aio_cb *aio_req_ornot;
137 235
138enum { 236/* helper: set scalar to foreign ptr with custom free */
139 PRI_MIN = -4, 237static void
140 PRI_MAX = 4, 238sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
141
142 DEFAULT_PRI = 0,
143 PRI_BIAS = -PRI_MIN,
144 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145};
146
147static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149static unsigned int started, wanted;
150
151#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153#else
154# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155#endif
156
157#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160/* worker threads management */
161static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163typedef struct worker {
164 /* locked by wrklock */
165 struct worker *prev, *next;
166
167 pthread_t tid;
168
169 /* locked by reslock, reqlock or wrklock */
170 aio_req req; /* currently processed request */
171 void *dbuf;
172 DIR *dirp;
173} worker;
174
175static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177static void worker_clear (worker *wrk)
178{ 239{
179 if (wrk->dirp) 240 sv_force_normal (sv);
241
242 /* we store the length in mg_obj, as namlen is I32 :/ */
243 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
244 ->mg_obj = (SV *)length;
245
246 SvUPGRADE (sv, SVt_PV); /* nop... */
247
248 if (SvLEN (sv))
249 Safefree (SvPVX (sv));
250
251 SvPVX (sv) = (char *)addr;
252 SvCUR_set (sv, length);
253 SvLEN_set (sv, 0);
254 SvPOK_only (sv);
255}
256
257static void
258sv_clear_foreign (SV *sv)
259{
260 /* todo: iterate over magic and only free ours, but of course */
261 /* the perl5porters will call that (correct) behaviour buggy */
262 sv_unmagic (sv, FOREIGN_MAGIC);
263}
264
265/*****************************************************************************/
266
267static void
268fiemap (eio_req *req)
269{
270 req->result = -1;
271
272#if HAVE_FIEMAP
273 /* assume some c99 */
274 struct fiemap *fiemap = 0;
275 size_t end_offset;
276 int count = req->int3;
277
278 req->flags |= EIO_FLAG_PTR1_FREE;
279
280 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
281 /* increase in 3.5kb steps */
282 if (count < 0)
283 count = 8;
284
285 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
286 errno = ENOMEM;
287 if (!fiemap)
288 return;
289
290 req->ptr1 = fiemap;
291
292 fiemap->fm_start = req->offs;
293 fiemap->fm_length = req->size;
294 fiemap->fm_flags = req->int2;
295 fiemap->fm_extent_count = count;
296
297 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
298 return;
299
300 if (req->int3 >= 0 /* not autosizing */
301 || !fiemap->fm_mapped_extents /* no more extents */
302 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
303 goto done;
304
305 /* else we have to loop -
306 * it would be tempting (actually I tried that first) to just query the
307 * number of extents needed, but linux often feels like not returning all
308 * extents, without telling us it left any out. this complicates
309 * this quite a bit.
310 */
311
312 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
313
314 for (;;)
180 { 315 {
181 closedir (wrk->dirp); 316 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
182 wrk->dirp = 0; 317 char scratch[3072];
183 } 318 struct fiemap *incmap = (struct fiemap *)scratch;
184 319
185 if (wrk->dbuf) 320 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
186 { 321 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
187 free (wrk->dbuf); 322 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
188 wrk->dbuf = 0; 323 incmap->fm_flags = fiemap->fm_flags;
189 } 324 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
190}
191 325
192static void worker_free (worker *wrk) 326 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
193{
194 wrk->next->prev = wrk->prev;
195 wrk->prev->next = wrk->next;
196
197 free (wrk);
198}
199
200static volatile unsigned int nreqs, nready, npending;
201static volatile unsigned int max_outstanding = 0xffffffff;
202static int respipe [2];
203
204static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208#if WORDREAD_UNSAFE
209
210static unsigned int get_nready ()
211{
212 unsigned int retval;
213
214 LOCK (reqlock);
215 retval = nready;
216 UNLOCK (reqlock);
217
218 return retval;
219}
220
221static unsigned int get_npending ()
222{
223 unsigned int retval;
224
225 LOCK (reslock);
226 retval = npending;
227 UNLOCK (reslock);
228
229 return retval;
230}
231
232#else
233
234# define get_nready() nready
235# define get_npending() npending
236
237#endif
238
239/*
240 * a somewhat faster data structure might be nice, but
241 * with 8 priorities this actually needs <20 insns
242 * per shift, the most expensive operation.
243 */
244typedef struct {
245 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246 int size;
247} reqq;
248
249static reqq req_queue;
250static reqq res_queue;
251
252int reqq_push (reqq *q, aio_req req)
253{
254 int pri = req->pri;
255 req->next = 0;
256
257 if (q->qe[pri])
258 {
259 q->qe[pri]->next = req;
260 q->qe[pri] = req;
261 }
262 else
263 q->qe[pri] = q->qs[pri] = req;
264
265 return q->size++;
266}
267
268aio_req reqq_shift (reqq *q)
269{
270 int pri;
271
272 if (!q->size)
273 return 0; 327 return;
274 328
275 --q->size; 329 if (!incmap->fm_mapped_extents)
330 goto done;
276 331
277 for (pri = NUM_PRI; pri--; ) 332 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
278 { 333 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
279 aio_req req = q->qs[pri]; 334 errno = ENOMEM;
280
281 if (req) 335 if (!fiemap)
336 return;
337
338 req->ptr1 = fiemap;
339
340 for (count = 0; count < incmap->fm_mapped_extents; ++count)
282 { 341 {
283 if (!(q->qs[pri] = req->next)) 342 struct fiemap_extent *e = incmap->fm_extents + count;
284 q->qe[pri] = 0;
285 343
286 return req; 344 if (e->fe_logical + e->fe_length >= end_offset)
345 goto done;
346
347 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
348
349 if (e->fe_flags & FIEMAP_EXTENT_LAST)
350 goto done;
351
287 } 352 }
288 } 353 }
289 354
290 abort (); 355done:
291} 356 req->result = 0;
292 357
293static int poll_cb (int max); 358#else
294static void req_invoke (aio_req req); 359 errno = ENOSYS;
360#endif
361}
362
363/*****************************************************************************/
364
365enum {
366 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
367};
368
369typedef eio_req *aio_req;
370typedef eio_req *aio_req_ornot;
371typedef eio_wd aio_wd;
372
373static SV *on_next_submit;
374static int next_pri = EIO_PRI_DEFAULT;
375static int max_outstanding;
376
377static s_epipe respipe;
378
295static void req_free (aio_req req); 379static void req_destroy (aio_req req);
296static void req_cancel (aio_req req); 380static void req_cancel (aio_req req);
297 381
382static void
383want_poll (void)
384{
385 /* write a dummy byte to the pipe so fh becomes ready */
386 s_epipe_signal (&respipe);
387}
388
389static void
390done_poll (void)
391{
392 /* read any signals sent by the worker threads */
393 s_epipe_drain (&respipe);
394}
395
298/* must be called at most once */ 396/* must be called at most once */
299static SV *req_sv (aio_req req, const char *klass) 397static SV *
398req_sv (aio_req req, HV *stash)
300{ 399{
301 if (!req->self) 400 if (!req->self)
302 { 401 {
303 req->self = (SV *)newHV (); 402 req->self = (SV *)newHV ();
304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 403 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305 } 404 }
306 405
307 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 406 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308} 407}
309 408
310static aio_req SvAIO_REQ (SV *sv) 409static SV *
410newSVaio_wd (aio_wd wd)
411{
412 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
413}
414
415static aio_req
416SvAIO_REQ (SV *sv)
311{ 417{
312 MAGIC *mg; 418 MAGIC *mg;
313 419
314 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 420 if (!SvROK (sv)
421 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
422 || (SvSTASH (SvRV (sv)) != aio_grp_stash
423 && SvSTASH (SvRV (sv)) != aio_req_stash
424 && !sv_derived_from (sv, "IO::AIO::REQ")))
315 croak ("object of class " AIO_REQ_KLASS " expected"); 425 croak ("object of class IO::AIO::REQ expected");
316 426
317 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 427 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318 428
319 return mg ? (aio_req)mg->mg_ptr : 0; 429 return mg ? (aio_req)mg->mg_ptr : 0;
320} 430}
321 431
432static aio_wd
433SvAIO_WD (SV *sv)
434{
435 if (!SvROK (sv)
436 || SvTYPE (SvRV (sv)) != SVt_PVMG
437 || SvSTASH (SvRV (sv)) != aio_wd_stash)
438 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
439
440 return (aio_wd)(long)SvIVX (SvRV (sv));
441}
442
443static SV *
444newmortalFH (int fd, int flags)
445{
446 if (fd < 0)
447 return &PL_sv_undef;
448
449 GV *gv = (GV *)sv_newmortal ();
450 char sym[64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
454 gv_init (gv, aio_stash, sym, symlen, 0);
455
456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 fd
462 );
463
464 return do_open (gv, sym, symlen, 0, 0, 0, 0)
465 ? (SV *)gv : &PL_sv_undef;
466}
467
468static void
322static void aio_grp_feed (aio_req grp) 469aio_grp_feed (aio_req grp)
323{ 470{
324 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 471 if (grp->sv2 && SvOK (grp->sv2))
325 { 472 {
326 int old_len = grp->length;
327
328 if (grp->fh2 && SvOK (grp->fh2))
329 {
330 dSP; 473 dSP;
331 474
332 ENTER; 475 ENTER;
333 SAVETMPS; 476 SAVETMPS;
334 PUSHMARK (SP); 477 PUSHMARK (SP);
335 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 478 XPUSHs (req_sv (grp, aio_grp_stash));
336 PUTBACK; 479 PUTBACK;
337 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 480 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338 SPAGAIN; 481 SPAGAIN;
339 FREETMPS; 482 FREETMPS;
340 LEAVE; 483 LEAVE;
341 }
342
343 /* stop if no progress has been made */
344 if (old_len == grp->length)
345 {
346 SvREFCNT_dec (grp->fh2);
347 grp->fh2 = 0;
348 break;
349 }
350 } 484 }
351} 485}
352 486
353static void aio_grp_dec (aio_req grp) 487static void
488req_submit (eio_req *req)
354{ 489{
355 --grp->length; 490 eio_submit (req);
356 491
357 /* call feeder, if applicable */ 492 if (expect_false (on_next_submit))
358 aio_grp_feed (grp);
359
360 /* finish, if done */
361 if (!grp->length && grp->fd)
362 { 493 {
363 req_invoke (grp); 494 dSP;
364 req_free (grp); 495 SV *cb = sv_2mortal (on_next_submit);
496
497 on_next_submit = 0;
498
499 PUSHMARK (SP);
500 PUTBACK;
501 call_sv (cb, G_DISCARD | G_EVAL);
365 } 502 }
366} 503}
367 504
505static int
368static void req_invoke (aio_req req) 506req_invoke (eio_req *req)
369{ 507{
370 dSP; 508 if (req->flags & FLAG_SV2_RO_OFF)
509 SvREADONLY_off (req->sv2);
371 510
372 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 511 if (!EIO_CANCELLED (req) && req->callback)
373 { 512 {
513 dSP;
514 static SV *sv_result_cache; /* caches the result integer SV */
515 SV *sv_result;
516
374 ENTER; 517 ENTER;
375 SAVETMPS; 518 SAVETMPS;
376 PUSHMARK (SP); 519 PUSHMARK (SP);
377 EXTEND (SP, 1); 520 EXTEND (SP, 1);
378 521
522 /* do not recreate the result IV from scratch each time */
523 if (expect_true (sv_result_cache))
524 {
525 sv_result = sv_result_cache; sv_result_cache = 0;
526 SvIV_set (sv_result, req->result);
527 SvIOK_only (sv_result);
528 }
529 else
530 {
531 sv_result = newSViv (req->result);
532 SvREADONLY_on (sv_result);
533 }
534
379 switch (req->type) 535 switch (req->type)
380 { 536 {
537 case EIO_WD_OPEN:
538 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
539 break;
540
381 case REQ_READDIR: 541 case EIO_READDIR:
382 { 542 {
383 SV *rv = &PL_sv_undef; 543 SV *rv = &PL_sv_undef;
384 544
385 if (req->result >= 0) 545 if (req->result >= 0)
386 { 546 {
387 int i; 547 int i;
388 char *buf = req->data2ptr; 548 char *names = (char *)req->ptr2;
549 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389 AV *av = newAV (); 550 AV *av = newAV ();
390 551
391 av_extend (av, req->result - 1); 552 av_extend (av, req->result - 1);
392 553
393 for (i = 0; i < req->result; ++i) 554 for (i = 0; i < req->result; ++i)
394 { 555 {
395 SV *sv = newSVpv (buf, 0); 556 if (req->int1 & EIO_READDIR_DENTS)
557 {
558 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396 559
560 if (req->int1 & EIO_READDIR_CUSTOM2)
561 {
562 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
563 AV *avent = newAV ();
564
565 av_extend (avent, 2);
566
567 if (!sv_type [ent->type])
568 {
569 sv_type [ent->type] = newSViv (ent->type);
570 SvREADONLY_on (sv_type [ent->type]);
571 }
572
573 av_store (avent, 0, namesv);
574 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
575 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
576
577 av_store (av, i, newRV_noinc ((SV *)avent));
578 }
579 else
397 av_store (av, i, sv); 580 av_store (av, i, namesv);
581
582 ++ent;
583 }
584 else
585 {
586 SV *name = newSVpv (names, 0);
587 av_store (av, i, name);
398 buf += SvCUR (sv) + 1; 588 names += SvCUR (name) + 1;
589 }
399 } 590 }
400 591
401 rv = sv_2mortal (newRV_noinc ((SV *)av)); 592 rv = sv_2mortal (newRV_noinc ((SV *)av));
402 } 593 }
403 594
404 PUSHs (rv); 595 PUSHs (rv);
596
597 if (req->int1 & EIO_READDIR_CUSTOM1)
598 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405 } 599 }
406 break; 600 break;
407 601
408 case REQ_OPEN: 602 case EIO_OPEN:
603 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
604 break;
605
606 case EIO_STATVFS:
607 case EIO_FSTATVFS:
409 { 608 {
410 /* convert fd to fh */ 609 SV *rv = &PL_sv_undef;
411 SV *fh; 610
611#ifndef _WIN32
612 if (req->result >= 0)
613 {
614 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
615 HV *hv = newHV ();
616 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
617 * chooses to make it a struct.
618 */
619 unsigned long fsid = 0;
620 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
412 621
413 PUSHs (sv_2mortal (newSViv (req->result))); 622 rv = sv_2mortal (newRV_noinc ((SV *)hv));
414 PUTBACK;
415 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
416 SPAGAIN;
417 623
418 fh = SvREFCNT_inc (POPs); 624 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
625 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
626 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
627 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
628 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
629 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
630 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
631 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
632 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
633 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
634 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
635 }
636#endif
419 637
420 PUSHMARK (SP); 638 PUSHs (rv);
421 XPUSHs (sv_2mortal (fh));
422 } 639 }
640
423 break; 641 break;
424 642
425 case REQ_GROUP: 643 case EIO_GROUP:
426 req->fd = 2; /* mark group as finished */ 644 req->int1 = 2; /* mark group as finished */
427 645
428 if (req->data) 646 if (req->sv1)
429 { 647 {
430 int i; 648 int i;
431 AV *av = (AV *)req->data; 649 AV *av = (AV *)req->sv1;
432 650
433 EXTEND (SP, AvFILL (av) + 1); 651 EXTEND (SP, AvFILL (av) + 1);
434 for (i = 0; i <= AvFILL (av); ++i) 652 for (i = 0; i <= AvFILL (av); ++i)
435 PUSHs (*av_fetch (av, i, 0)); 653 PUSHs (*av_fetch (av, i, 0));
436 } 654 }
437 break; 655 break;
438 656
439 case REQ_NOP: 657 case EIO_NOP:
440 case REQ_BUSY: 658 case EIO_BUSY:
441 break; 659 break;
442 660
661 case EIO_READLINK:
662 case EIO_REALPATH:
663 if (req->result > 0)
664 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
665 break;
666
667 case EIO_STAT:
668 case EIO_LSTAT:
669 case EIO_FSTAT:
670 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
671
672 if (!(PL_laststatval = req->result))
673 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
674 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
675
676 PUSHs (sv_result);
677 break;
678
679 case EIO_SEEK:
680 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
681 break;
682
683 case EIO_READ:
684 {
685 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
686 *SvEND (req->sv2) = 0;
687 SvPOK_only (req->sv2);
688 SvSETMAGIC (req->sv2);
689 PUSHs (sv_result);
690 }
691 break;
692
693 case EIO_SLURP:
694 {
695 if (req->result >= 0)
696 {
697 /* if length was originally not known, we steal the malloc'ed memory */
698 if (req->flags & EIO_FLAG_PTR2_FREE)
699 {
700 req->flags &= ~EIO_FLAG_PTR2_FREE;
701 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
702 }
703 else
704 {
705 SvCUR_set (req->sv2, req->result);
706 *SvEND (req->sv2) = 0;
707 SvPOK_only (req->sv2);
708 }
709
710 SvSETMAGIC (req->sv2);
711 }
712
713 PUSHs (sv_result);
714 }
715 break;
716
717 case EIO_CUSTOM:
718 if (req->feed == fiemap)
719 {
720#if HAVE_FIEMAP
721 if (!req->result)
722 {
723 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
724
725 if (fiemap->fm_extent_count)
726 {
727 AV *av = newAV ();
728 int i;
729
730 while (fiemap->fm_mapped_extents)
731 {
732 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
733 AV *ext_av = newAV ();
734
735 av_store (ext_av, 3, newSVuv (extent->fe_flags));
736 av_store (ext_av, 2, newSVval64 (extent->fe_length));
737 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
738 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
739
740 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
741 }
742
743 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
744 }
745 else
746 {
747 SvIV_set (sv_result, fiemap->fm_mapped_extents);
748 PUSHs (sv_result);
749 }
750 }
751#endif
752 }
753 else
754 PUSHs (sv_result);
755 break;
756
757 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
758 if (req->result > 0)
759 SvIV_set (sv_result, 0);
760 /* FALLTHROUGH */
761
443 default: 762 default:
444 PUSHs (sv_2mortal (newSViv (req->result))); 763 PUSHs (sv_result);
445 break; 764 break;
446 } 765 }
447 766
448 errno = req->errorno; 767 errno = req->errorno;
449 768
450 PUTBACK; 769 PUTBACK;
451 call_sv (req->callback, G_VOID | G_EVAL); 770 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452 SPAGAIN; 771 SPAGAIN;
772
773 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
774 SvREFCNT_dec (sv_result);
775 else
776 sv_result_cache = sv_result;
453 777
454 FREETMPS; 778 FREETMPS;
455 LEAVE; 779 LEAVE;
780
781 PUTBACK;
456 } 782 }
457 783
458 if (req->grp) 784 return !!SvTRUE (ERRSV);
459 {
460 aio_req grp = req->grp;
461
462 /* unlink request */
463 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466 if (grp->grp_first == req)
467 grp->grp_first = req->grp_next;
468
469 aio_grp_dec (grp);
470 }
471
472 if (SvTRUE (ERRSV))
473 {
474 req_free (req);
475 croak (0);
476 }
477} 785}
478 786
479static void req_free (aio_req req) 787static void
788req_destroy (aio_req req)
480{ 789{
481 if (req->self) 790 if (req->self)
482 { 791 {
483 sv_unmagic (req->self, PERL_MAGIC_ext); 792 sv_unmagic (req->self, PERL_MAGIC_ext);
484 SvREFCNT_dec (req->self); 793 SvREFCNT_dec (req->self);
485 } 794 }
486 795
487 SvREFCNT_dec (req->data);
488 SvREFCNT_dec (req->fh); 796 SvREFCNT_dec (req->sv1);
489 SvREFCNT_dec (req->fh2); 797 SvREFCNT_dec (req->sv2);
798 SvREFCNT_dec (req->sv3);
799 SvREFCNT_dec (req->sv4);
490 SvREFCNT_dec (req->callback); 800 SvREFCNT_dec (req->callback);
491 Safefree (req->statdata);
492 801
493 if (req->type == REQ_READDIR)
494 free (req->data2ptr);
495
496 Safefree (req); 802 free (req);
497} 803}
498 804
805static void
499static void req_cancel_subs (aio_req grp) 806req_cancel_subs (aio_req grp)
500{ 807{
501 aio_req sub;
502
503 if (grp->type != REQ_GROUP) 808 if (grp->type != EIO_GROUP)
504 return; 809 return;
505 810
506 SvREFCNT_dec (grp->fh2); 811 SvREFCNT_dec (grp->sv2);
507 grp->fh2 = 0; 812 grp->sv2 = 0;
508 813
509 for (sub = grp->grp_first; sub; sub = sub->grp_next) 814 eio_grp_cancel (grp);
510 req_cancel (sub);
511} 815}
512 816
513static void req_cancel (aio_req req) 817static void ecb_cold
818create_respipe (void)
514{ 819{
515 req->flags |= FLAG_CANCELLED; 820 if (s_epipe_renew (&respipe))
516 821 croak ("IO::AIO: unable to initialize result pipe");
517 req_cancel_subs (req);
518} 822}
519 823
520static void *aio_proc(void *arg); 824static void
521 825poll_wait (void)
522static void start_thread (void)
523{ 826{
524 sigset_t fullsigset, oldsigset;
525 pthread_attr_t attr;
526
527 worker *wrk = calloc (1, sizeof (worker));
528
529 if (!wrk)
530 croak ("unable to allocate worker thread data");
531
532 pthread_attr_init (&attr);
533 pthread_attr_setstacksize (&attr, STACKSIZE);
534 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535#ifdef PTHREAD_SCOPE_PROCESS
536 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537#endif
538
539 sigfillset (&fullsigset);
540
541 LOCK (wrklock);
542 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545 {
546 wrk->prev = &wrk_first;
547 wrk->next = wrk_first.next;
548 wrk_first.next->prev = wrk;
549 wrk_first.next = wrk;
550 ++started;
551 }
552 else
553 free (wrk);
554
555 sigprocmask (SIG_SETMASK, &oldsigset, 0);
556 UNLOCK (wrklock);
557}
558
559static void maybe_start_thread ()
560{
561#if 0
562 static struct timeval last;
563 struct timeval diff, now;
564#endif
565
566 if (started >= wanted)
567 return;
568
569 if (nready <= nreqs - get_nready () - get_npending ())
570 return;
571
572#if 0
573 gettimeofday (&now, 0);
574
575 diff.tv_sec = now.tv_sec - last.tv_sec;
576 diff.tv_usec = now.tv_usec - last.tv_usec;
577
578 if (diff.tv_usec < 0)
579 {
580 --diff.tv_sec;
581 diff.tv_usec += 1000000;
582 }
583
584 if (!diff.tv_sec && diff.tv_usec < 10000)
585 return;
586
587 last = now;
588#endif
589
590 start_thread ();
591}
592
593static void req_send (aio_req req)
594{
595 ++nreqs;
596
597 LOCK (reqlock);
598 ++nready;
599 reqq_push (&req_queue, req);
600 pthread_cond_signal (&reqwait);
601 UNLOCK (reqlock);
602
603 maybe_start_thread ();
604}
605
606static void end_thread (void)
607{
608 aio_req req;
609
610 Newz (0, req, 1, aio_cb);
611
612 req->type = REQ_QUIT;
613 req->pri = PRI_MAX + PRI_BIAS;
614
615 req_send (req);
616
617 LOCK (wrklock);
618 --started;
619 UNLOCK (wrklock);
620}
621
622static void min_parallel (int nthreads)
623{
624 if (wanted < nthreads)
625 wanted = nthreads;
626}
627
628static void max_parallel (int nthreads)
629{
630 if (wanted > nthreads)
631 wanted = nthreads;
632
633 while (started > wanted)
634 end_thread ();
635}
636
637static void poll_wait ()
638{
639 fd_set rfd;
640
641 while (nreqs) 827 while (eio_nreqs ())
642 { 828 {
643 int size; 829 int size;
644 if (WORDREAD_UNSAFE) LOCK (reslock); 830
831 X_LOCK (EIO_POOL->reslock);
645 size = res_queue.size; 832 size = EIO_POOL->res_queue.size;
646 if (WORDREAD_UNSAFE) UNLOCK (reslock); 833 X_UNLOCK (EIO_POOL->reslock);
647 834
648 if (size) 835 if (size)
649 return; 836 return;
650 837
651 maybe_start_thread (); 838 etp_maybe_start_thread (EIO_POOL);
652 839
653 FD_ZERO(&rfd); 840 s_epipe_wait (&respipe);
654 FD_SET(respipe [0], &rfd);
655
656 select (respipe [0] + 1, &rfd, 0, 0, 0);
657 } 841 }
658} 842}
659 843
660static int poll_cb (int max) 844static int
845poll_cb (void)
661{ 846{
662 dSP;
663 int count = 0;
664 int do_croak = 0;
665 aio_req req;
666
667 for (;;) 847 for (;;)
668 { 848 {
669 while (max <= 0 || count < max) 849 int res = eio_poll ();
850
851 if (res > 0)
852 croak (0);
853
854 if (!max_outstanding || max_outstanding > eio_nreqs ())
855 return res;
856
857 poll_wait ();
858 }
859}
860
861static void ecb_cold
862reinit (void)
863{
864 create_respipe ();
865
866 if (eio_init (want_poll, done_poll) < 0)
867 croak ("IO::AIO: unable to initialise eio library");
868}
869
870/*****************************************************************************/
871
872static SV *
873get_cb (SV *cb_sv)
874{
875 SvGETMAGIC (cb_sv);
876 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
877}
878
879static aio_req ecb_noinline
880dreq (SV *callback)
881{
882 SV *cb_cv;
883 aio_req req;
884 int req_pri = next_pri;
885 next_pri = EIO_PRI_DEFAULT;
886
887 cb_cv = get_cb (callback);
888
889 req = calloc (sizeof (*req), 1);
890 if (!req)
891 croak ("out of memory during eio_req allocation");
892
893 req->callback = SvREFCNT_inc (cb_cv);
894 req->pri = req_pri;
895
896 return req;
897}
898
899#define dREQ \
900 aio_req req = dreq (callback); \
901
902#define REQ_SEND \
903 PUTBACK; \
904 req_submit (req); \
905 SPAGAIN; \
906 \
907 if (GIMME_V != G_VOID) \
908 XPUSHs (req_sv (req, aio_req_stash));
909
910ecb_inline void
911req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
912{
913 if (expect_false (SvROK (path)))
914 {
915 SV *rv = SvRV (path);
916 SV *wdob;
917
918 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
670 { 919 {
671 maybe_start_thread (); 920 path = AvARRAY (rv)[1];
921 wdob = AvARRAY (rv)[0];
672 922
673 LOCK (reslock); 923 if (SvOK (wdob))
674 req = reqq_shift (&res_queue);
675
676 if (req)
677 { 924 {
678 --npending; 925 *wd = SvAIO_WD (wdob);
679 926 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
680 if (!res_queue.size)
681 {
682 /* read any signals sent by the worker threads */
683 char buf [32];
684 while (read (respipe [0], buf, 32) == 32)
685 ;
686 }
687 }
688
689 UNLOCK (reslock);
690
691 if (!req)
692 break;
693
694 --nreqs;
695
696 if (req->type == REQ_GROUP && req->length)
697 {
698 req->fd = 1; /* mark request as delayed */
699 continue;
700 } 927 }
701 else 928 else
702 { 929 *wd = EIO_INVALID_WD;
703 if (req->type == REQ_READ)
704 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707 SvREADONLY_off (req->data);
708
709 if (req->statdata)
710 {
711 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712 PL_laststatval = req->result;
713 PL_statcache = *(req->statdata);
714 }
715
716 req_invoke (req);
717
718 count++;
719 }
720
721 req_free (req);
722 } 930 }
931 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
932 {
933 *wd = (aio_wd)(long)SvIVX (rv);
934 *wdsv = SvREFCNT_inc_NN (rv);
935 *ptr = ".";
936 return; /* path set to "." */
937 }
938 else
939 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
940 }
723 941
724 if (nreqs <= max_outstanding) 942 *pathsv = newSVsv (path);
943 *ptr = SvPVbyte_nolen (*pathsv);
944}
945
946static void ecb_noinline
947req_set_path1 (aio_req req, SV *path)
948{
949 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
950}
951
952static void ecb_noinline
953req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
954{
955 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
956
957 switch (SvTYPE (rv))
958 {
959 case SVt_PVIO:
960 case SVt_PVLV:
961 case SVt_PVGV:
962 req->type = type_fh;
963 req->sv1 = newSVsv (fh_or_path);
964 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
725 break; 965 break;
726 966
727 poll_wait (); 967 default:
728 968 req->type = type_path;
729 max = 0; 969 req_set_path1 (req, fh_or_path);
970 break;
730 } 971 }
731
732 return count;
733} 972}
734 973
735static void create_pipe () 974XS(boot_IO__AIO) ecb_cold;
736{
737 if (pipe (respipe))
738 croak ("unable to initialize result pipe");
739 975
740 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741 croak ("cannot set result pipe to nonblocking mode");
742
743 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744 croak ("cannot set result pipe to nonblocking mode");
745}
746
747/*****************************************************************************/
748/* work around various missing functions */
749
750#if !HAVE_PREADWRITE
751# define pread aio_pread
752# define pwrite aio_pwrite
753
754/*
755 * make our pread/pwrite safe against themselves, but not against
756 * normal read/write by using a mutex. slows down execution a lot,
757 * but that's your problem, not mine.
758 */
759static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762{
763 ssize_t res;
764 off_t ooffset;
765
766 LOCK (preadwritelock);
767 ooffset = lseek (fd, 0, SEEK_CUR);
768 lseek (fd, offset, SEEK_SET);
769 res = read (fd, buf, count);
770 lseek (fd, ooffset, SEEK_SET);
771 UNLOCK (preadwritelock);
772
773 return res;
774}
775
776static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777{
778 ssize_t res;
779 off_t ooffset;
780
781 LOCK (preadwritelock);
782 ooffset = lseek (fd, 0, SEEK_CUR);
783 lseek (fd, offset, SEEK_SET);
784 res = write (fd, buf, count);
785 lseek (fd, offset, SEEK_SET);
786 UNLOCK (preadwritelock);
787
788 return res;
789}
790#endif
791
792#if !HAVE_FDATASYNC
793# define fdatasync fsync
794#endif
795
796#if !HAVE_READAHEAD
797# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800{
801 dBUF;
802
803 while (count > 0)
804 {
805 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807 pread (fd, aio_buf, len, offset);
808 offset += len;
809 count -= len;
810 }
811
812 errno = 0;
813}
814
815#endif
816
817#if !HAVE_READDIR_R
818# define readdir_r aio_readdir_r
819
820static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823{
824 struct dirent *e;
825 int errorno;
826
827 LOCK (readdirlock);
828
829 e = readdir (dirp);
830 errorno = errno;
831
832 if (e)
833 {
834 *res = ent;
835 strcpy (ent->d_name, e->d_name);
836 }
837 else
838 *res = 0;
839
840 UNLOCK (readdirlock);
841
842 errno = errorno;
843 return e ? 0 : -1;
844}
845#endif
846
847/* sendfile always needs emulation */
848static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849{
850 ssize_t res;
851
852 if (!count)
853 return 0;
854
855#if HAVE_SENDFILE
856# if __linux
857 res = sendfile (ofd, ifd, &offset, count);
858
859# elif __freebsd
860 /*
861 * Of course, the freebsd sendfile is a dire hack with no thoughts
862 * wasted on making it similar to other I/O functions.
863 */
864 {
865 off_t sbytes;
866 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868 if (res < 0 && sbytes)
869 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870 res = sbytes;
871 }
872
873# elif __hpux
874 res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876# elif __solaris
877 {
878 struct sendfilevec vec;
879 size_t sbytes;
880
881 vec.sfv_fd = ifd;
882 vec.sfv_flag = 0;
883 vec.sfv_off = offset;
884 vec.sfv_len = count;
885
886 res = sendfilev (ofd, &vec, 1, &sbytes);
887
888 if (res < 0 && sbytes)
889 res = sbytes;
890 }
891
892# endif
893#else
894 res = -1;
895 errno = ENOSYS;
896#endif
897
898 if (res < 0
899 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900#if __solaris
901 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
902#endif
903 )
904 )
905 {
906 /* emulate sendfile. this is a major pain in the ass */
907 dBUF;
908
909 res = 0;
910
911 while (count)
912 {
913 ssize_t cnt;
914
915 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917 if (cnt <= 0)
918 {
919 if (cnt && !res) res = -1;
920 break;
921 }
922
923 cnt = write (ofd, aio_buf, cnt);
924
925 if (cnt <= 0)
926 {
927 if (cnt && !res) res = -1;
928 break;
929 }
930
931 offset += cnt;
932 res += cnt;
933 count -= cnt;
934 }
935 }
936
937 return res;
938}
939
940/* read a full directory */
941static void scandir_ (aio_req req, worker *self)
942{
943 DIR *dirp;
944 union
945 {
946 struct dirent d;
947 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948 } *u;
949 struct dirent *entp;
950 char *name, *names;
951 int memlen = 4096;
952 int memofs = 0;
953 int res = 0;
954 int errorno;
955
956 LOCK (wrklock);
957 self->dirp = dirp = opendir (req->dataptr);
958 self->dbuf = u = malloc (sizeof (*u));
959 req->data2ptr = names = malloc (memlen);
960 UNLOCK (wrklock);
961
962 if (dirp && u && names)
963 for (;;)
964 {
965 errno = 0;
966 readdir_r (dirp, &u->d, &entp);
967
968 if (!entp)
969 break;
970
971 name = entp->d_name;
972
973 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974 {
975 int len = strlen (name) + 1;
976
977 res++;
978
979 while (memofs + len > memlen)
980 {
981 memlen *= 2;
982 LOCK (wrklock);
983 req->data2ptr = names = realloc (names, memlen);
984 UNLOCK (wrklock);
985
986 if (!names)
987 break;
988 }
989
990 memcpy (names + memofs, name, len);
991 memofs += len;
992 }
993 }
994
995 if (errno)
996 res = -1;
997
998 req->result = res;
999}
1000
1001/*****************************************************************************/
1002
1003static void *aio_proc (void *thr_arg)
1004{
1005 aio_req req;
1006 worker *self = (worker *)thr_arg;
1007
1008 for (;;)
1009 {
1010 LOCK (reqlock);
1011
1012 for (;;)
1013 {
1014 self->req = req = reqq_shift (&req_queue);
1015
1016 if (req)
1017 break;
1018
1019 pthread_cond_wait (&reqwait, &reqlock);
1020 }
1021
1022 --nready;
1023
1024 UNLOCK (reqlock);
1025
1026 errno = 0; /* strictly unnecessary */
1027
1028 if (!(req->flags & FLAG_CANCELLED))
1029 switch (req->type)
1030 {
1031 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042 case REQ_CLOSE: req->result = close (req->fd); break;
1043 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048
1049 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1050 case REQ_FSYNC: req->result = fsync (req->fd); break;
1051 case REQ_READDIR: scandir_ (req, self); break;
1052
1053 case REQ_BUSY:
1054 {
1055 struct timeval tv;
1056
1057 tv.tv_sec = req->fd;
1058 tv.tv_usec = req->fd2;
1059
1060 req->result = select (0, 0, 0, 0, &tv);
1061 }
1062
1063 case REQ_GROUP:
1064 case REQ_NOP:
1065 break;
1066
1067 case REQ_QUIT:
1068 LOCK (wrklock);
1069 worker_free (self);
1070 --started;
1071 UNLOCK (wrklock);
1072 return 0;
1073
1074 default:
1075 req->result = ENOSYS;
1076 break;
1077 }
1078
1079 req->errorno = errno;
1080
1081 LOCK (reslock);
1082
1083 ++npending;
1084
1085 if (!reqq_push (&res_queue, req))
1086 /* write a dummy byte to the pipe so fh becomes ready */
1087 write (respipe [1], &respipe, 1);
1088
1089 self->req = 0;
1090 worker_clear (self);
1091
1092 UNLOCK (reslock);
1093 }
1094}
1095
1096/*****************************************************************************/
1097
1098static void atfork_prepare (void)
1099{
1100 LOCK (wrklock);
1101 LOCK (reqlock);
1102 LOCK (reslock);
1103#if !HAVE_PREADWRITE
1104 LOCK (preadwritelock);
1105#endif
1106#if !HAVE_READDIR_R
1107 LOCK (readdirlock);
1108#endif
1109}
1110
1111static void atfork_parent (void)
1112{
1113#if !HAVE_READDIR_R
1114 UNLOCK (readdirlock);
1115#endif
1116#if !HAVE_PREADWRITE
1117 UNLOCK (preadwritelock);
1118#endif
1119 UNLOCK (reslock);
1120 UNLOCK (reqlock);
1121 UNLOCK (wrklock);
1122}
1123
1124static void atfork_child (void)
1125{
1126 aio_req prv;
1127
1128 while (prv = reqq_shift (&req_queue))
1129 req_free (prv);
1130
1131 while (prv = reqq_shift (&res_queue))
1132 req_free (prv);
1133
1134 while (wrk_first.next != &wrk_first)
1135 {
1136 worker *wrk = wrk_first.next;
1137
1138 if (wrk->req)
1139 req_free (wrk->req);
1140
1141 worker_clear (wrk);
1142 worker_free (wrk);
1143 }
1144
1145 started = 0;
1146 nreqs = 0;
1147
1148 close (respipe [0]);
1149 close (respipe [1]);
1150 create_pipe ();
1151
1152 atfork_parent ();
1153}
1154
1155#define dREQ \
1156 aio_req req; \
1157 int req_pri = next_pri; \
1158 next_pri = DEFAULT_PRI + PRI_BIAS; \
1159 \
1160 if (SvOK (callback) && !SvROK (callback)) \
1161 croak ("callback must be undef or of reference type"); \
1162 \
1163 Newz (0, req, 1, aio_cb); \
1164 if (!req) \
1165 croak ("out of memory during aio_req allocation"); \
1166 \
1167 req->callback = newSVsv (callback); \
1168 req->pri = req_pri
1169
1170#define REQ_SEND \
1171 req_send (req); \
1172 \
1173 if (GIMME_V != G_VOID) \
1174 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1175
1176MODULE = IO::AIO PACKAGE = IO::AIO 976MODULE = IO::AIO PACKAGE = IO::AIO
1177 977
1178PROTOTYPES: ENABLE 978PROTOTYPES: ENABLE
1179 979
1180BOOT: 980BOOT:
1181{ 981{
982 static const struct {
983 const char *name;
984 IV iv;
985 } *civ, const_iv[] = {
986# define const_niv(name, value) { # name, (IV) value },
987# define const_iv(name) { # name, (IV) name },
988# define const_eio(name) { # name, (IV) EIO_ ## name },
989
990 /* you have to re-run ./gendef0 after adding/removing any constants here */
991 /* the first block can be undef if missing */
992 const_iv (ENOSYS)
993 const_iv (EXDEV)
994 const_iv (EBADR)
995
996 /* for lseek */
997 const_iv (SEEK_DATA)
998 const_iv (SEEK_HOLE)
999
1000 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
1001 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1002 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1003 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1004 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1005 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1006
1007 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1008 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1009 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1010 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1011 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1012
1013 /* the second block will be 0 when missing */
1014 const_iv (O_RDONLY)
1015 const_iv (O_WRONLY)
1016 const_iv (O_RDWR)
1017 const_iv (O_CREAT)
1018 const_iv (O_TRUNC)
1019 const_iv (O_EXCL)
1020 const_iv (O_APPEND)
1021
1022 const_iv (O_ASYNC)
1023 const_iv (O_DIRECT)
1024 const_iv (O_NOATIME)
1025
1026 const_iv (O_CLOEXEC)
1027 const_iv (O_NOCTTY)
1028 const_iv (O_NOFOLLOW)
1029 const_iv (O_NONBLOCK)
1030 const_iv (O_EXEC)
1031 const_iv (O_SEARCH)
1032 const_iv (O_DIRECTORY)
1033 const_iv (O_DSYNC)
1034 const_iv (O_RSYNC)
1035 const_iv (O_SYNC)
1036 const_iv (O_PATH)
1037 const_iv (O_TMPFILE)
1038 const_iv (O_TTY_INIT)
1039
1040 const_iv (S_IFIFO)
1041 const_iv (S_IFCHR)
1042 const_iv (S_IFBLK)
1043 const_iv (S_IFLNK)
1044 const_iv (S_IFREG)
1045 const_iv (S_IFDIR)
1046 const_iv (S_IFWHT)
1047 const_iv (S_IFSOCK)
1048 const_iv (S_IFMT)
1049
1050 const_iv (ST_RDONLY)
1051 const_iv (ST_NOSUID)
1052 const_iv (ST_NODEV)
1053 const_iv (ST_NOEXEC)
1054 const_iv (ST_SYNCHRONOUS)
1055 const_iv (ST_MANDLOCK)
1056 const_iv (ST_WRITE)
1057 const_iv (ST_APPEND)
1058 const_iv (ST_IMMUTABLE)
1059 const_iv (ST_NOATIME)
1060 const_iv (ST_NODIRATIME)
1061 const_iv (ST_RELATIME)
1062
1063 const_iv (PROT_NONE)
1064 const_iv (PROT_EXEC)
1065 const_iv (PROT_READ)
1066 const_iv (PROT_WRITE)
1067
1068 const_iv (MAP_PRIVATE)
1069 const_iv (MAP_SHARED)
1070 const_iv (MAP_FIXED)
1071 const_iv (MAP_ANONYMOUS)
1072
1073 /* linuxish */
1074 const_iv (MAP_LOCKED)
1075 const_iv (MAP_NORESERVE)
1076 const_iv (MAP_POPULATE)
1077 const_iv (MAP_NONBLOCK)
1078 const_iv (MAP_GROWSDOWN)
1079 const_iv (MAP_32BIT)
1080 const_iv (MAP_HUGETLB)
1081 const_iv (MAP_STACK)
1082
1083 const_iv (F_DUPFD_CLOEXEC)
1084
1085 const_iv (F_OFD_GETLK)
1086 const_iv (F_OFD_SETLK)
1087 const_iv (F_OFD_GETLKW)
1088
1089 const_iv (FIFREEZE)
1090 const_iv (FITHAW)
1091 const_iv (FITRIM)
1092 const_iv (FICLONE)
1093 const_iv (FICLONERANGE)
1094 const_iv (FIDEDUPERANGE)
1095
1096 const_iv (FS_IOC_GETFLAGS)
1097 const_iv (FS_IOC_SETFLAGS)
1098 const_iv (FS_IOC_GETVERSION)
1099 const_iv (FS_IOC_SETVERSION)
1100 const_iv (FS_IOC_FIEMAP)
1101 const_iv (FS_IOC_FSGETXATTR)
1102 const_iv (FS_IOC_FSSETXATTR)
1103 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1104 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1105 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1106
1107 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1108
1109 const_iv (FS_SECRM_FL)
1110 const_iv (FS_UNRM_FL)
1111 const_iv (FS_COMPR_FL)
1112 const_iv (FS_SYNC_FL)
1113 const_iv (FS_IMMUTABLE_FL)
1114 const_iv (FS_APPEND_FL)
1115 const_iv (FS_NODUMP_FL)
1116 const_iv (FS_NOATIME_FL)
1117 const_iv (FS_DIRTY_FL)
1118 const_iv (FS_COMPRBLK_FL)
1119 const_iv (FS_NOCOMP_FL)
1120 const_iv (FS_ENCRYPT_FL)
1121 const_iv (FS_BTREE_FL)
1122 const_iv (FS_INDEX_FL)
1123 const_iv (FS_JOURNAL_DATA_FL)
1124 const_iv (FS_NOTAIL_FL)
1125 const_iv (FS_DIRSYNC_FL)
1126 const_iv (FS_TOPDIR_FL)
1127 const_iv (FS_FL_USER_MODIFIABLE)
1128
1129 const_iv (FS_XFLAG_REALTIME)
1130 const_iv (FS_XFLAG_PREALLOC)
1131 const_iv (FS_XFLAG_IMMUTABLE)
1132 const_iv (FS_XFLAG_APPEND)
1133 const_iv (FS_XFLAG_SYNC)
1134 const_iv (FS_XFLAG_NOATIME)
1135 const_iv (FS_XFLAG_NODUMP)
1136 const_iv (FS_XFLAG_RTINHERIT)
1137 const_iv (FS_XFLAG_PROJINHERIT)
1138 const_iv (FS_XFLAG_NOSYMLINKS)
1139 const_iv (FS_XFLAG_EXTSIZE)
1140 const_iv (FS_XFLAG_EXTSZINHERIT)
1141 const_iv (FS_XFLAG_NODEFRAG)
1142 const_iv (FS_XFLAG_FILESTREAM)
1143 const_iv (FS_XFLAG_DAX)
1144 const_iv (FS_XFLAG_HASATTR)
1145
1146 const_iv (FIEMAP_FLAG_SYNC)
1147 const_iv (FIEMAP_FLAG_XATTR)
1148 const_iv (FIEMAP_FLAGS_COMPAT)
1149 const_iv (FIEMAP_EXTENT_LAST)
1150 const_iv (FIEMAP_EXTENT_UNKNOWN)
1151 const_iv (FIEMAP_EXTENT_DELALLOC)
1152 const_iv (FIEMAP_EXTENT_ENCODED)
1153 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1154 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1155 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1156 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1157 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1158 const_iv (FIEMAP_EXTENT_MERGED)
1159 const_iv (FIEMAP_EXTENT_SHARED)
1160
1161 const_iv (SPLICE_F_MOVE)
1162 const_iv (SPLICE_F_NONBLOCK)
1163 const_iv (SPLICE_F_MORE)
1164 const_iv (SPLICE_F_GIFT)
1165
1166 /* these are libeio constants, and are independent of gendef0 */
1167 const_eio (SEEK_SET)
1168 const_eio (SEEK_CUR)
1169 const_eio (SEEK_END)
1170
1171 const_eio (MCL_FUTURE)
1172 const_eio (MCL_CURRENT)
1173
1174 const_eio (MS_ASYNC)
1175 const_eio (MS_INVALIDATE)
1176 const_eio (MS_SYNC)
1177
1178 const_eio (MT_MODIFY)
1179
1180 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1181 const_eio (SYNC_FILE_RANGE_WRITE)
1182 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1183
1184 const_eio (FALLOC_FL_KEEP_SIZE)
1185 const_eio (FALLOC_FL_PUNCH_HOLE)
1186 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1187 const_eio (FALLOC_FL_ZERO_RANGE)
1188 const_eio (FALLOC_FL_INSERT_RANGE)
1189 const_eio (FALLOC_FL_UNSHARE_RANGE)
1190
1191 const_eio (RENAME_NOREPLACE)
1192 const_eio (RENAME_EXCHANGE)
1193 const_eio (RENAME_WHITEOUT)
1194
1195 const_eio (READDIR_DENTS)
1196 const_eio (READDIR_DIRS_FIRST)
1197 const_eio (READDIR_STAT_ORDER)
1198 const_eio (READDIR_FOUND_UNKNOWN)
1199
1200 const_eio (DT_UNKNOWN)
1201 const_eio (DT_FIFO)
1202 const_eio (DT_CHR)
1203 const_eio (DT_DIR)
1204 const_eio (DT_BLK)
1205 const_eio (DT_REG)
1206 const_eio (DT_LNK)
1207 const_eio (DT_SOCK)
1208 const_eio (DT_WHT)
1209 };
1210
1182 HV *stash = gv_stashpv ("IO::AIO", 1); 1211 aio_stash = gv_stashpv ("IO::AIO" , 1);
1183 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1212 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1184 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1213 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1185 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); 1214 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1186 1215
1187 create_pipe (); 1216 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1188 pthread_atfork (atfork_prepare, atfork_parent, atfork_child); 1217 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1189 1218
1190 start_thread (); 1219 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1191}
1192 1220
1221 reinit ();
1222}
1223
1193void 1224void
1194min_parallel (int nthreads) 1225reinit ()
1195 PROTOTYPE: $ 1226 PROTOTYPE:
1196 1227
1197void 1228void
1198max_parallel (int nthreads) 1229max_poll_reqs (unsigned int nreqs)
1199 PROTOTYPE: $
1200
1201int
1202max_outstanding (int maxreqs)
1203 PROTOTYPE: $ 1230 PROTOTYPE: $
1204 CODE: 1231 CODE:
1205 RETVAL = max_outstanding; 1232 eio_set_max_poll_reqs (nreqs);
1233
1234void
1235max_poll_time (double nseconds)
1236 PROTOTYPE: $
1237 CODE:
1238 eio_set_max_poll_time (nseconds);
1239
1240void
1241min_parallel (unsigned int nthreads)
1242 PROTOTYPE: $
1243 CODE:
1244 eio_set_min_parallel (nthreads);
1245
1246void
1247max_parallel (unsigned int nthreads)
1248 PROTOTYPE: $
1249 CODE:
1250 eio_set_max_parallel (nthreads);
1251
1252void
1253max_idle (unsigned int nthreads)
1254 PROTOTYPE: $
1255 CODE:
1256 eio_set_max_idle (nthreads);
1257
1258void
1259idle_timeout (unsigned int seconds)
1260 PROTOTYPE: $
1261 CODE:
1262 eio_set_idle_timeout (seconds);
1263
1264void
1265max_outstanding (unsigned int maxreqs)
1266 PROTOTYPE: $
1267 CODE:
1206 max_outstanding = maxreqs; 1268 max_outstanding = maxreqs;
1207 OUTPUT:
1208 RETVAL
1209 1269
1210void 1270void
1211aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1271aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1212 SV * pathname
1213 int flags
1214 int mode
1215 SV * callback
1216 PROTOTYPE: $$$;$
1217 PPCODE: 1272 PPCODE:
1218{ 1273{
1219 dREQ; 1274 dREQ;
1220 1275
1221 req->type = REQ_OPEN; 1276 req->type = EIO_WD_OPEN;
1222 req->data = newSVsv (pathname); 1277 req_set_path1 (req, pathname);
1223 req->dataptr = SvPVbyte_nolen (req->data);
1224 req->fd = flags;
1225 req->mode = mode;
1226 1278
1227 REQ_SEND; 1279 REQ_SEND;
1228} 1280}
1229 1281
1230void 1282void
1283aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1284 PPCODE:
1285{
1286 dREQ;
1287
1288 req->type = EIO_OPEN;
1289 req_set_path1 (req, pathname);
1290 req->int1 = flags;
1291 req->int2 = mode;
1292
1293 REQ_SEND;
1294}
1295
1296void
1231aio_close (fh,callback=&PL_sv_undef) 1297aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1232 SV * fh
1233 SV * callback
1234 PROTOTYPE: $;$
1235 ALIAS: 1298 ALIAS:
1236 aio_close = REQ_CLOSE
1237 aio_fsync = REQ_FSYNC 1299 aio_fsync = EIO_FSYNC
1238 aio_fdatasync = REQ_FDATASYNC 1300 aio_fdatasync = EIO_FDATASYNC
1301 aio_syncfs = EIO_SYNCFS
1239 PPCODE: 1302 PPCODE:
1240{ 1303{
1304 int fd = s_fileno_croak (fh, 0);
1241 dREQ; 1305 dREQ;
1242 1306
1243 req->type = ix; 1307 req->type = ix;
1244 req->fh = newSVsv (fh); 1308 req->sv1 = newSVsv (fh);
1245 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1309 req->int1 = fd;
1246 1310
1247 REQ_SEND (req); 1311 REQ_SEND;
1248} 1312}
1249 1313
1250void 1314void
1315aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1316 PPCODE:
1317{
1318 int fd = s_fileno_croak (fh, 0);
1319 dREQ;
1320
1321 req->type = EIO_SYNC_FILE_RANGE;
1322 req->sv1 = newSVsv (fh);
1323 req->int1 = fd;
1324 req->offs = offset;
1325 req->size = nbytes;
1326 req->int2 = flags;
1327
1328 REQ_SEND;
1329}
1330
1331void
1332aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1333 PPCODE:
1334{
1335 int fd = s_fileno_croak (fh, 0);
1336 dREQ;
1337
1338 req->type = EIO_FALLOCATE;
1339 req->sv1 = newSVsv (fh);
1340 req->int1 = fd;
1341 req->int2 = mode;
1342 req->offs = offset;
1343 req->size = len;
1344
1345 REQ_SEND;
1346}
1347
1348void
1349aio_close (SV *fh, SV *callback = &PL_sv_undef)
1350 PPCODE:
1351{
1352 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1353 int fd = s_fileno_croak (fh, 0);
1354 dREQ;
1355
1356 if (expect_false (close_fd < 0))
1357 {
1358 int pipefd [2];
1359
1360 if (
1361#ifdef _WIN32
1362 _pipe (pipefd, 1, _O_BINARY) < 0
1363#else
1364 pipe (pipefd) < 0
1365 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1366#endif
1367 || close (pipefd [1]) < 0
1368 )
1369 abort (); /*D*/
1370
1371 close_fd = pipefd [0];
1372 }
1373
1374 req->type = EIO_DUP2;
1375 req->int1 = close_fd;
1376 req->sv2 = newSVsv (fh);
1377 req->int2 = fd;
1378
1379 REQ_SEND;
1380}
1381
1382void
1383aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1384 PPCODE:
1385{
1386 int fd = s_fileno_croak (fh, 0);
1387 dREQ;
1388
1389 req->type = EIO_SEEK;
1390 req->sv1 = newSVsv (fh);
1391 req->int1 = fd;
1392 req->offs = SvVAL64 (offset);
1393 req->int2 = whence;
1394
1395 REQ_SEND;
1396}
1397
1398void
1251aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1399aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1252 SV * fh
1253 UV offset
1254 UV length
1255 SV * data
1256 UV dataoffset
1257 SV * callback
1258 ALIAS: 1400 ALIAS:
1259 aio_read = REQ_READ 1401 aio_read = EIO_READ
1260 aio_write = REQ_WRITE 1402 aio_write = EIO_WRITE
1261 PROTOTYPE: $$$$$;$
1262 PPCODE: 1403 PPCODE:
1263{ 1404{
1264 aio_req req;
1265 STRLEN svlen; 1405 STRLEN svlen;
1406 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1266 char *svptr = SvPVbyte (data, svlen); 1407 char *svptr = SvPVbyte (data, svlen);
1267 1408 UV len = SvUV (length);
1268 SvUPGRADE (data, SVt_PV);
1269 SvPOK_on (data);
1270 1409
1271 if (dataoffset < 0) 1410 if (dataoffset < 0)
1272 dataoffset += svlen; 1411 dataoffset += svlen;
1273 1412
1274 if (dataoffset < 0 || dataoffset > svlen) 1413 if (dataoffset < 0 || dataoffset > svlen)
1275 croak ("data offset outside of string"); 1414 croak ("dataoffset outside of data scalar");
1276 1415
1277 if (ix == REQ_WRITE) 1416 if (ix == EIO_WRITE)
1278 { 1417 {
1279 /* write: check length and adjust. */ 1418 /* write: check length and adjust. */
1280 if (length < 0 || length + dataoffset > svlen) 1419 if (!SvOK (length) || len + dataoffset > svlen)
1281 length = svlen - dataoffset; 1420 len = svlen - dataoffset;
1282 } 1421 }
1283 else 1422 else
1284 { 1423 {
1285 /* read: grow scalar as necessary */ 1424 /* read: check type and grow scalar as necessary */
1425 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1286 svptr = SvGROW (data, length + dataoffset); 1426 svptr = sv_grow (data, len + dataoffset + 1);
1427 else if (SvCUR (data) < len + dataoffset)
1428 croak ("length + dataoffset outside of scalar, and cannot grow");
1287 } 1429 }
1288
1289 if (length < 0)
1290 croak ("length must not be negative");
1291 1430
1292 { 1431 {
1293 dREQ; 1432 dREQ;
1294 1433
1295 req->type = ix; 1434 req->type = ix;
1296 req->fh = newSVsv (fh); 1435 req->sv1 = newSVsv (fh);
1297 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1436 req->int1 = fd;
1298 : IoOFP (sv_2io (fh))); 1437 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1299 req->offset = offset; 1438 req->size = len;
1300 req->length = length;
1301 req->data = SvREFCNT_inc (data); 1439 req->sv2 = SvREFCNT_inc (data);
1302 req->dataptr = (char *)svptr + dataoffset; 1440 req->ptr2 = (char *)svptr + dataoffset;
1441 req->stroffset = dataoffset;
1303 1442
1304 if (!SvREADONLY (data)) 1443 if (!SvREADONLY (data))
1305 { 1444 {
1306 SvREADONLY_on (data); 1445 SvREADONLY_on (data);
1307 req->data2ptr = (void *)data; 1446 req->flags |= FLAG_SV2_RO_OFF;
1308 } 1447 }
1309 1448
1310 REQ_SEND; 1449 REQ_SEND;
1311 } 1450 }
1312} 1451}
1313 1452
1314void 1453void
1315aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1454aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1316 SV * out_fh 1455 ALIAS:
1317 SV * in_fh 1456 aio_ioctl = EIO_IOCTL
1318 UV in_offset 1457 aio_fcntl = EIO_FCNTL
1319 UV length
1320 SV * callback
1321 PROTOTYPE: $$$$;$
1322 PPCODE: 1458 PPCODE:
1323{ 1459{
1324 dREQ; 1460 int fd = s_fileno_croak (fh, 0);
1461 char *svptr;
1325 1462
1326 req->type = REQ_SENDFILE; 1463 if (SvPOK (arg) || !SvNIOK (arg))
1327 req->fh = newSVsv (out_fh);
1328 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1329 req->fh2 = newSVsv (in_fh);
1330 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1331 req->offset = in_offset;
1332 req->length = length;
1333
1334 REQ_SEND;
1335}
1336
1337void
1338aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1339 SV * fh
1340 UV offset
1341 IV length
1342 SV * callback
1343 PROTOTYPE: $$$;$
1344 PPCODE:
1345{
1346 dREQ;
1347
1348 req->type = REQ_READAHEAD;
1349 req->fh = newSVsv (fh);
1350 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1351 req->offset = offset;
1352 req->length = length;
1353
1354 REQ_SEND;
1355}
1356
1357void
1358aio_stat (fh_or_path,callback=&PL_sv_undef)
1359 SV * fh_or_path
1360 SV * callback
1361 ALIAS:
1362 aio_stat = REQ_STAT
1363 aio_lstat = REQ_LSTAT
1364 PPCODE:
1365{
1366 dREQ;
1367
1368 New (0, req->statdata, 1, Stat_t);
1369 if (!req->statdata)
1370 { 1464 {
1371 req_free (req); 1465 STRLEN svlen;
1372 croak ("out of memory during aio_req->statdata allocation"); 1466 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1373 } 1467#ifdef IOCPARM_LEN
1468 STRLEN need = IOCPARM_LEN (request);
1469#else
1470 STRLEN need = 256;
1471#endif
1374 1472
1375 if (SvPOK (fh_or_path)) 1473 if (svlen < need)
1376 { 1474 svptr = SvGROW (arg, need);
1377 req->type = ix;
1378 req->data = newSVsv (fh_or_path);
1379 req->dataptr = SvPVbyte_nolen (req->data);
1380 } 1475 }
1381 else 1476 else
1477 svptr = (char *)SvIV (arg);
1478
1382 { 1479 {
1480 dREQ;
1481
1383 req->type = REQ_FSTAT; 1482 req->type = ix;
1384 req->fh = newSVsv (fh_or_path); 1483 req->sv1 = newSVsv (fh);
1385 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1484 req->int1 = fd;
1485 req->int2 = (long)request;
1486 req->sv2 = SvREFCNT_inc (arg);
1487 req->ptr2 = svptr;
1488
1489 REQ_SEND;
1386 } 1490 }
1491}
1492
1493void
1494aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1495 ALIAS:
1496 aio_readlink = EIO_READLINK
1497 aio_realpath = EIO_REALPATH
1498 PPCODE:
1499{
1500 dREQ;
1501
1502 req->type = ix;
1503 req_set_path1 (req, pathname);
1387 1504
1388 REQ_SEND; 1505 REQ_SEND;
1389} 1506}
1390 1507
1391void 1508void
1392aio_unlink (pathname,callback=&PL_sv_undef) 1509aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1393 SV * pathname 1510 PPCODE:
1394 SV * callback 1511{
1512 int ifd = s_fileno_croak (in_fh , 0);
1513 int ofd = s_fileno_croak (out_fh, 1);
1514 dREQ;
1515
1516 req->type = EIO_SENDFILE;
1517 req->sv1 = newSVsv (out_fh);
1518 req->int1 = ofd;
1519 req->sv2 = newSVsv (in_fh);
1520 req->int2 = ifd;
1521 req->offs = in_offset;
1522 req->size = length;
1523
1524 REQ_SEND;
1525}
1526
1527void
1528aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1529 PPCODE:
1530{
1531 int fd = s_fileno_croak (fh, 0);
1532 dREQ;
1533
1534 req->type = EIO_READAHEAD;
1535 req->sv1 = newSVsv (fh);
1536 req->int1 = fd;
1537 req->offs = offset;
1538 req->size = length;
1539
1540 REQ_SEND;
1541}
1542
1543void
1544aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1395 ALIAS: 1545 ALIAS:
1546 aio_stat = EIO_STAT
1547 aio_lstat = EIO_LSTAT
1548 aio_statvfs = EIO_STATVFS
1549 PPCODE:
1550{
1551 dREQ;
1552
1553 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1554
1555 REQ_SEND;
1556}
1557
1558UV
1559major (UV dev)
1560 ALIAS:
1561 minor = 1
1562 CODE:
1563 RETVAL = ix ? minor (dev) : major (dev);
1564 OUTPUT:
1565 RETVAL
1566
1567UV
1568makedev (UV maj, UV min)
1569 CODE:
1570 RETVAL = makedev (maj, min);
1571 OUTPUT:
1572 RETVAL
1573
1574void
1575aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1576 PPCODE:
1577{
1578 dREQ;
1579
1580 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1581 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1582 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1583
1584 REQ_SEND;
1585}
1586
1587void
1588aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1589 PPCODE:
1590{
1591 dREQ;
1592
1593 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1594 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1595
1596 REQ_SEND;
1597}
1598
1599void
1600aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1601 PPCODE:
1602{
1603 dREQ;
1604
1605 req->int2 = mode;
1606 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1607
1608 REQ_SEND;
1609}
1610
1611void
1612aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1613 PPCODE:
1614{
1615 dREQ;
1616
1617 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1618 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1619 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1620
1621 REQ_SEND;
1622}
1623
1624void
1625aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1626 PPCODE:
1627{
1628 dREQ;
1629
1630 req->type = EIO_READDIR;
1631 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1632
1633 if (flags & EIO_READDIR_DENTS)
1634 req->int1 |= EIO_READDIR_CUSTOM2;
1635
1636 req_set_path1 (req, pathname);
1637
1638 REQ_SEND;
1639}
1640
1641void
1642aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1643 PPCODE:
1644{
1645 dREQ;
1646
1647 req->type = EIO_MKDIR;
1648 req->int2 = mode;
1649 req_set_path1 (req, pathname);
1650
1651 REQ_SEND;
1652}
1653
1654void
1655aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1656 ALIAS:
1396 aio_unlink = REQ_UNLINK 1657 aio_unlink = EIO_UNLINK
1397 aio_rmdir = REQ_RMDIR 1658 aio_rmdir = EIO_RMDIR
1398 aio_readdir = REQ_READDIR 1659 aio_readdir = EIO_READDIR
1399 PPCODE: 1660 PPCODE:
1400{ 1661{
1401 dREQ; 1662 dREQ;
1402 1663
1403 req->type = ix; 1664 req->type = ix;
1404 req->data = newSVsv (pathname); 1665 req_set_path1 (req, pathname);
1405 req->dataptr = SvPVbyte_nolen (req->data); 1666
1406
1407 REQ_SEND; 1667 REQ_SEND;
1408} 1668}
1409 1669
1410void 1670void
1411aio_link (oldpath,newpath,callback=&PL_sv_undef) 1671aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1412 SV * oldpath
1413 SV * newpath
1414 SV * callback
1415 ALIAS: 1672 ALIAS:
1416 aio_link = REQ_LINK 1673 aio_link = EIO_LINK
1417 aio_symlink = REQ_SYMLINK 1674 aio_symlink = EIO_SYMLINK
1418 aio_rename = REQ_RENAME 1675 aio_rename = EIO_RENAME
1419 PPCODE: 1676 PPCODE:
1420{ 1677{
1678 eio_wd wd2 = 0;
1421 dREQ; 1679 dREQ;
1422 1680
1423 req->type = ix; 1681 req->type = ix;
1424 req->fh = newSVsv (oldpath); 1682 req_set_path1 (req, oldpath);
1425 req->data2ptr = SvPVbyte_nolen (req->fh); 1683 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1426 req->data = newSVsv (newpath); 1684 req->int3 = (long)wd2;
1427 req->dataptr = SvPVbyte_nolen (req->data);
1428 1685
1429 REQ_SEND; 1686 REQ_SEND;
1430} 1687}
1431 1688
1432void 1689void
1433aio_busy (delay,callback=&PL_sv_undef) 1690aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1434 double delay
1435 SV * callback
1436 PPCODE: 1691 PPCODE:
1437{ 1692{
1693 eio_wd wd2 = 0;
1438 dREQ; 1694 dREQ;
1439 1695
1440 req->type = REQ_BUSY; 1696 req->type = EIO_RENAME;
1441 req->fd = delay < 0. ? 0 : delay; 1697 req_set_path1 (req, oldpath);
1442 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1698 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1443 1699 req->int2 = flags;
1700 req->int3 = (long)wd2;
1701
1444 REQ_SEND; 1702 REQ_SEND;
1445} 1703}
1446 1704
1447void 1705void
1448aio_group (callback=&PL_sv_undef) 1706aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1449 SV * callback 1707 PPCODE:
1450 PROTOTYPE: ;$ 1708{
1709 dREQ;
1710
1711 req->type = EIO_MKNOD;
1712 req->int2 = (mode_t)mode;
1713 req->offs = dev;
1714 req_set_path1 (req, pathname);
1715
1716 REQ_SEND;
1717}
1718
1719void
1720aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1721 ALIAS:
1722 aio_mtouch = EIO_MTOUCH
1723 aio_msync = EIO_MSYNC
1451 PPCODE: 1724 PPCODE:
1452{ 1725{
1726 STRLEN svlen;
1727 char *svptr = SvPVbyte (data, svlen);
1728 UV len = SvUV (length);
1729
1730 if (flags < 0)
1731 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1732
1733 if (offset < 0)
1734 offset += svlen;
1735
1736 if (offset < 0 || offset > svlen)
1737 croak ("offset outside of scalar");
1738
1739 if (!SvOK (length) || len + offset > svlen)
1740 len = svlen - offset;
1741
1742 {
1743 dREQ;
1744
1745 req->type = ix;
1746 req->sv2 = SvREFCNT_inc (data);
1747 req->ptr2 = (char *)svptr + offset;
1748 req->size = len;
1749 req->int1 = flags;
1750
1751 REQ_SEND;
1752 }
1753}
1754
1755void
1756aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1757 PPCODE:
1758{
1759 STRLEN svlen;
1760 char *svptr = SvPVbyte (data, svlen);
1761 UV len = SvUV (length);
1762
1763 if (offset < 0)
1764 offset += svlen;
1765
1766 if (offset < 0 || offset > svlen)
1767 croak ("offset outside of scalar");
1768
1769 if (!SvOK (length) || len + offset > svlen)
1770 len = svlen - offset;
1771
1772 {
1773 dREQ;
1774
1775 req->type = EIO_MLOCK;
1776 req->sv2 = SvREFCNT_inc (data);
1777 req->ptr2 = (char *)svptr + offset;
1778 req->size = len;
1779
1780 REQ_SEND;
1781 }
1782}
1783
1784void
1785aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1786 PPCODE:
1787{
1788 dREQ;
1789
1790 req->type = EIO_MLOCKALL;
1791 req->int1 = flags;
1792
1793 REQ_SEND;
1794}
1795
1796void
1797aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1798 PPCODE:
1799{
1800 int fd = s_fileno_croak (fh, 0);
1453 dREQ; 1801 dREQ;
1454 1802
1455 req->type = REQ_GROUP; 1803 req->type = EIO_CUSTOM;
1456 req_send (req); 1804 req->sv1 = newSVsv (fh);
1805 req->int1 = fd;
1457 1806
1458 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1807 req->feed = fiemap;
1459} 1808#if HAVE_FIEMAP
1809 /* keep our fingers crossed that the next two types are 64 bit */
1810 req->offs = start;
1811 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1812 req->int2 = flags;
1813 req->int3 = SvOK (count) ? SvIV (count) : -1;
1814#endif
1460 1815
1816 REQ_SEND;
1817}
1818
1461void 1819void
1462aio_nop (callback=&PL_sv_undef) 1820aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1463 SV * callback 1821 PPCODE:
1822{
1823 char *svptr = 0;
1824
1825 sv_clear_foreign (data);
1826
1827 if (length) /* known length, directly read into scalar */
1828 {
1829 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1830 svptr = sv_grow (data, length + 1);
1831 else if (SvCUR (data) < length)
1832 croak ("length outside of scalar, and cannot grow");
1833 else
1834 svptr = SvPVbyte_nolen (data);
1835 }
1836
1837 {
1838 dREQ;
1839
1840 req->type = EIO_SLURP;
1841 req_set_path1 (req, pathname);
1842 req->offs = offset;
1843 req->size = length;
1844 req->sv2 = SvREFCNT_inc (data);
1845 req->ptr2 = svptr;
1846
1847 if (!SvREADONLY (data))
1848 {
1849 SvREADONLY_on (data);
1850 req->flags |= FLAG_SV2_RO_OFF;
1851 }
1852
1853 REQ_SEND;
1854 }
1855}
1856
1857void
1858aio_busy (double delay, SV *callback = &PL_sv_undef)
1464 PPCODE: 1859 PPCODE:
1465{ 1860{
1466 dREQ; 1861 dREQ;
1467 1862
1468 req->type = REQ_NOP; 1863 req->type = EIO_BUSY;
1864 req->nv1 = delay < 0. ? 0. : delay;
1469 1865
1470 REQ_SEND; 1866 REQ_SEND;
1471} 1867}
1472 1868
1869void
1870aio_group (SV *callback = &PL_sv_undef)
1871 PPCODE:
1872{
1873 dREQ;
1874
1875 req->type = EIO_GROUP;
1876
1877 PUTBACK;
1878 req_submit (req);
1879 SPAGAIN;
1880
1881 XPUSHs (req_sv (req, aio_grp_stash));
1882}
1883
1884void
1885aio_nop (SV *callback = &PL_sv_undef)
1886 ALIAS:
1887 aio_nop = EIO_NOP
1888 aio_sync = EIO_SYNC
1889 PPCODE:
1890{
1891 dREQ;
1892
1893 req->type = ix;
1894
1895 REQ_SEND;
1896}
1897
1473int 1898int
1474aioreq_pri (int pri = 0) 1899aioreq_pri (int pri = NO_INIT)
1475 PROTOTYPE: ;$
1476 CODE: 1900 CODE:
1477 RETVAL = next_pri - PRI_BIAS; 1901 RETVAL = next_pri;
1478 if (items > 0) 1902 if (items > 0)
1479 { 1903 {
1480 if (pri < PRI_MIN) pri = PRI_MIN; 1904 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1481 if (pri > PRI_MAX) pri = PRI_MAX; 1905 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1482 next_pri = pri + PRI_BIAS; 1906 next_pri = pri;
1483 } 1907 }
1484 OUTPUT: 1908 OUTPUT:
1485 RETVAL 1909 RETVAL
1486 1910
1487void 1911void
1488aioreq_nice (int nice = 0) 1912aioreq_nice (int nice = 0)
1489 CODE: 1913 CODE:
1490 nice = next_pri - nice; 1914 nice = next_pri - nice;
1491 if (nice < PRI_MIN) nice = PRI_MIN; 1915 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1492 if (nice > PRI_MAX) nice = PRI_MAX; 1916 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1493 next_pri = nice + PRI_BIAS; 1917 next_pri = nice;
1494 1918
1495void 1919void
1496flush () 1920flush ()
1921 CODE:
1922 while (eio_nreqs ())
1923 {
1924 poll_wait ();
1925 poll_cb ();
1926 }
1927
1928int
1929poll ()
1930 CODE:
1931 poll_wait ();
1932 RETVAL = poll_cb ();
1933 OUTPUT:
1934 RETVAL
1935
1936int
1937poll_fileno ()
1938 CODE:
1939 RETVAL = s_epipe_fd (&respipe);
1940 OUTPUT:
1941 RETVAL
1942
1943int
1944poll_cb (...)
1497 PROTOTYPE: 1945 PROTOTYPE:
1498 CODE: 1946 CODE:
1499 while (nreqs)
1500 {
1501 poll_wait ();
1502 poll_cb (0); 1947 RETVAL = poll_cb ();
1503 }
1504
1505void
1506poll()
1507 PROTOTYPE:
1508 CODE:
1509 if (nreqs)
1510 {
1511 poll_wait ();
1512 poll_cb (0);
1513 }
1514
1515int
1516poll_fileno()
1517 PROTOTYPE:
1518 CODE:
1519 RETVAL = respipe [0];
1520 OUTPUT: 1948 OUTPUT:
1521 RETVAL 1949 RETVAL
1522 1950
1951void
1952poll_wait ()
1953 CODE:
1954 poll_wait ();
1955
1523int 1956int
1524poll_cb(...) 1957nreqs ()
1525 PROTOTYPE:
1526 CODE: 1958 CODE:
1527 RETVAL = poll_cb (0); 1959 RETVAL = eio_nreqs ();
1528 OUTPUT: 1960 OUTPUT:
1529 RETVAL 1961 RETVAL
1530 1962
1531int 1963int
1532poll_some(int max = 0) 1964nready ()
1533 PROTOTYPE: $
1534 CODE: 1965 CODE:
1535 RETVAL = poll_cb (max); 1966 RETVAL = eio_nready ();
1536 OUTPUT: 1967 OUTPUT:
1537 RETVAL 1968 RETVAL
1538 1969
1539void 1970int
1540poll_wait() 1971npending ()
1541 PROTOTYPE:
1542 CODE: 1972 CODE:
1543 if (nreqs) 1973 RETVAL = eio_npending ();
1544 poll_wait ();
1545
1546int
1547nreqs()
1548 PROTOTYPE:
1549 CODE:
1550 RETVAL = nreqs;
1551 OUTPUT: 1974 OUTPUT:
1552 RETVAL 1975 RETVAL
1553 1976
1554int 1977int
1555nready() 1978nthreads ()
1556 PROTOTYPE:
1557 CODE: 1979 CODE:
1558 RETVAL = get_nready (); 1980 RETVAL = eio_nthreads ();
1559 OUTPUT: 1981 OUTPUT:
1560 RETVAL 1982 RETVAL
1561 1983
1562int 1984int
1563npending() 1985fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1564 PROTOTYPE: 1986 CODE:
1987 RETVAL = posix_fadvise (fh, offset, length, advice);
1988 OUTPUT:
1989 RETVAL
1990
1991IV
1992sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1993 CODE:
1994 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1995 OUTPUT:
1996 RETVAL
1997
1998void
1999mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2000 PPCODE:
2001 sv_clear_foreign (scalar);
2002{
2003 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2004 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2005 if (addr == (void *)-1)
2006 XSRETURN_NO;
2007
2008 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2009
2010 if (!(prot & PROT_WRITE))
2011 SvREADONLY_on (scalar);
2012
2013 XSRETURN_YES;
2014}
2015
2016void
2017munmap (SV *scalar)
1565 CODE: 2018 CODE:
1566 RETVAL = get_npending (); 2019 sv_clear_foreign (scalar);
2020
2021int
2022madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2023 ALIAS:
2024 mprotect = 1
2025 CODE:
2026{
2027 STRLEN svlen;
2028 void *addr = SvPVbyte (scalar, svlen);
2029 STRLEN len = SvUV (length);
2030
2031 if (offset < 0)
2032 offset += svlen;
2033
2034 if (offset < 0 || offset > svlen)
2035 croak ("offset outside of scalar");
2036
2037 if (!SvOK (length) || len + offset > svlen)
2038 len = svlen - offset;
2039
2040 addr = (void *)(((intptr_t)addr) + offset);
2041 eio_page_align (&addr, &len);
2042
2043 switch (ix)
2044 {
2045 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2046 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2047 }
2048}
1567 OUTPUT: 2049 OUTPUT:
1568 RETVAL 2050 RETVAL
2051
2052int
2053munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2054 CODE:
2055{
2056 STRLEN svlen;
2057 void *addr = SvPVbyte (scalar, svlen);
2058 size_t len = SvUV (length);
2059
2060 if (offset < 0)
2061 offset += svlen;
2062
2063 if (offset < 0 || offset > svlen)
2064 croak ("offset outside of scalar");
2065
2066 if (!SvOK (length) || len + offset > svlen)
2067 len = svlen - offset;
2068
2069 addr = (void *)(((intptr_t)addr) + offset);
2070 eio_page_align (&addr, &len);
2071#if _POSIX_MEMLOCK_RANGE
2072 RETVAL = munlock (addr, len);
2073#else
2074 RETVAL = EIO_ENOSYS ();
2075#endif
2076}
2077 OUTPUT:
2078 RETVAL
2079
2080int
2081munlockall ()
2082 CODE:
2083#if _POSIX_MEMLOCK
2084 munlockall ();
2085#else
2086 RETVAL = EIO_ENOSYS ();
2087#endif
2088 OUTPUT:
2089 RETVAL
2090
2091int
2092splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2093 CODE:
2094{
2095#if HAVE_LINUX_SPLICE
2096 loff_t off_in_, off_out_;
2097 RETVAL = splice (
2098 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2099 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2100 length, flags
2101 );
2102#else
2103 RETVAL = EIO_ENOSYS ();
2104#endif
2105}
2106 OUTPUT:
2107 RETVAL
2108
2109int
2110tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2111 CODE:
2112#if HAVE_LINUX_SPLICE
2113 RETVAL = tee (rfh, wfh, length, flags);
2114#else
2115 RETVAL = EIO_ENOSYS ();
2116#endif
2117 OUTPUT:
2118 RETVAL
2119
2120int
2121pipesize (aio_rfd rfh, int new_size = -1)
2122 PROTOTYPE: $;$
2123 CODE:
2124#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2125 if (new_size >= 0)
2126 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2127 else
2128 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2129#else
2130 errno = ENOSYS;
2131 RETVAL = -1;
2132#endif
2133 OUTPUT:
2134 RETVAL
2135
2136void
2137pipe2 (int flags = 0)
2138 PROTOTYPE: ;$
2139 PPCODE:
2140{
2141 int fd[2];
2142 int res;
2143
2144 if (flags)
2145#if HAVE_PIPE2
2146 res = pipe2 (fd, flags);
2147#else
2148 res = (errno = ENOSYS, -1);
2149#endif
2150 else
2151 res = pipe (fd);
2152
2153 if (!res)
2154 {
2155 EXTEND (SP, 2);
2156 PUSHs (newmortalFH (fd[0], O_RDONLY));
2157 PUSHs (newmortalFH (fd[1], O_WRONLY));
2158 }
2159}
2160
2161UV
2162get_fdlimit ()
2163 CODE:
2164#if HAVE_RLIMITS
2165 struct rlimit rl;
2166 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2167 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2168#endif
2169 XSRETURN_UNDEF;
2170 OUTPUT:
2171 RETVAL
2172
2173void
2174min_fdlimit (UV limit = 0x7fffffffU)
2175 CODE:
2176{
2177#if HAVE_RLIMITS
2178 struct rlimit rl;
2179 rlim_t orig_rlim_max;
2180 UV bit;
2181
2182 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2183 goto fail;
2184
2185 if (rl.rlim_cur == RLIM_INFINITY)
2186 XSRETURN_YES;
2187
2188 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2189
2190 if (rl.rlim_cur < limit)
2191 {
2192 rl.rlim_cur = limit;
2193
2194 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2195 rl.rlim_max = rl.rlim_cur;
2196 }
2197
2198 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2199 XSRETURN_YES;
2200
2201 if (errno == EPERM)
2202 {
2203 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2204 /* our limit overflows a system-wide limit */
2205 /* try an adaptive algorithm, but do not lower the hardlimit */
2206 rl.rlim_max = 0;
2207 for (bit = 0x40000000U; bit; bit >>= 1)
2208 {
2209 rl.rlim_max |= bit;
2210 rl.rlim_cur = rl.rlim_max;
2211
2212 /* nevr decrease the hard limit */
2213 if (rl.rlim_max < orig_rlim_max)
2214 break;
2215
2216 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2217 rl.rlim_max &= ~bit; /* too high, remove bit again */
2218 }
2219
2220 /* now, raise the soft limit to the max permitted */
2221 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2222 {
2223 rl.rlim_cur = rl.rlim_max;
2224 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2225 errno = EPERM;
2226 }
2227 }
2228#endif
2229 fail:
2230 XSRETURN_UNDEF;
2231}
2232
2233void _on_next_submit (SV *cb)
2234 CODE:
2235 SvREFCNT_dec (on_next_submit);
2236 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1569 2237
1570PROTOTYPES: DISABLE 2238PROTOTYPES: DISABLE
2239
2240MODULE = IO::AIO PACKAGE = IO::AIO::WD
2241
2242BOOT:
2243{
2244 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2245 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2246}
2247
2248void
2249DESTROY (SV *self)
2250 CODE:
2251{
2252 aio_wd wd = SvAIO_WD (self);
2253#if HAVE_AT
2254 {
2255 SV *callback = &PL_sv_undef;
2256 dREQ; /* clobbers next_pri :/ */
2257 next_pri = req->pri; /* restore next_pri */
2258 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2259 req->type = EIO_WD_CLOSE;
2260 req->wd = wd;
2261 REQ_SEND;
2262 }
2263#else
2264 eio_wd_close_sync (wd);
2265#endif
2266}
1571 2267
1572MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2268MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1573 2269
1574void 2270void
1575cancel (aio_req_ornot req) 2271cancel (aio_req_ornot req)
1576 CODE: 2272 CODE:
1577 req_cancel (req); 2273 eio_cancel (req);
1578 2274
1579void 2275void
1580cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2276cb (aio_req_ornot req, SV *callback = NO_INIT)
1581 CODE: 2277 PPCODE:
2278{
2279 if (GIMME_V != G_VOID)
2280 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2281
2282 if (items > 1)
2283 {
2284 SV *cb_cv = get_cb (callback);
2285
1582 SvREFCNT_dec (req->callback); 2286 SvREFCNT_dec (req->callback);
1583 req->callback = newSVsv (callback); 2287 req->callback = SvREFCNT_inc (cb_cv);
2288 }
2289}
1584 2290
1585MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2291MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1586 2292
1587void 2293void
1588add (aio_req grp, ...) 2294add (aio_req grp, ...)
1589 PPCODE: 2295 PPCODE:
1590{ 2296{
1591 int i; 2297 int i;
1592 aio_req req;
1593 2298
1594 if (grp->fd == 2) 2299 if (grp->int1 == 2)
1595 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2300 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1596 2301
1597 for (i = 1; i < items; ++i ) 2302 for (i = 1; i < items; ++i )
1598 { 2303 {
2304 aio_req req;
2305
1599 if (GIMME_V != G_VOID) 2306 if (GIMME_V != G_VOID)
1600 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2307 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1601 2308
1602 req = SvAIO_REQ (ST (i)); 2309 req = SvAIO_REQ (ST (i));
1603 2310
1604 if (req) 2311 if (req)
1605 { 2312 eio_grp_add (grp, req);
1606 ++grp->length;
1607 req->grp = grp;
1608
1609 req->grp_prev = 0;
1610 req->grp_next = grp->grp_first;
1611
1612 if (grp->grp_first)
1613 grp->grp_first->grp_prev = req;
1614
1615 grp->grp_first = req;
1616 }
1617 } 2313 }
1618} 2314}
1619 2315
1620void 2316void
1621cancel_subs (aio_req_ornot req) 2317cancel_subs (aio_req_ornot req)
… …
1630 AV *av; 2326 AV *av;
1631 2327
1632 grp->errorno = errno; 2328 grp->errorno = errno;
1633 2329
1634 av = newAV (); 2330 av = newAV ();
2331 av_extend (av, items - 1);
1635 2332
1636 for (i = 1; i < items; ++i ) 2333 for (i = 1; i < items; ++i )
1637 av_push (av, newSVsv (ST (i))); 2334 av_push (av, newSVsv (ST (i)));
1638 2335
1639 SvREFCNT_dec (grp->data); 2336 SvREFCNT_dec (grp->sv1);
1640 grp->data = (SV *)av; 2337 grp->sv1 = (SV *)av;
1641} 2338}
1642 2339
1643void 2340void
1644errno (aio_req grp, int errorno = errno) 2341errno (aio_req grp, int errorno = errno)
1645 CODE: 2342 CODE:
1646 grp->errorno = errorno; 2343 grp->errorno = errorno;
1647 2344
1648void 2345void
1649limit (aio_req grp, int limit) 2346limit (aio_req grp, int limit)
1650 CODE: 2347 CODE:
1651 grp->fd2 = limit; 2348 eio_grp_limit (grp, limit);
1652 aio_grp_feed (grp);
1653 2349
1654void 2350void
1655feed (aio_req grp, SV *callback=&PL_sv_undef) 2351feed (aio_req grp, SV *callback = &PL_sv_undef)
1656 CODE: 2352 CODE:
1657{ 2353{
1658 SvREFCNT_dec (grp->fh2); 2354 SvREFCNT_dec (grp->sv2);
1659 grp->fh2 = newSVsv (callback); 2355 grp->sv2 = newSVsv (callback);
2356 grp->feed = aio_grp_feed;
1660 2357
1661 if (grp->fd2 <= 0) 2358 if (grp->int2 <= 0)
1662 grp->fd2 = 2; 2359 grp->int2 = 2;
1663 2360
1664 aio_grp_feed (grp); 2361 eio_grp_limit (grp, grp->int2);
1665} 2362}
1666 2363

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