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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC vs.
Revision 1.251 by root, Sat Jan 6 01:04:42 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/* number of seconds after which idle threads exit */ 156/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 157/* also provides const_iv_ and const_niv_ macros for them */
158#include "def0.h"
50 159
51/* used for struct dirent, AIX doesn't provide it */ 160#ifndef makedev
52#ifndef NAME_MAX 161# define makedev(maj,min) (((maj) << 8) | (min))
53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDREAD_UNSAFE
74# if __i386 || __x86_64
75# define WORDREAD_UNSAFE 0
76# else
77# define WORDREAD_UNSAFE 1
78# endif 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
79#endif 165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
80 169
81/* buffer size for various temporary buffers */ 170#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
83 173
84#define dBUF \ 174/*****************************************************************************/
85 char *aio_buf; \ 175
86 LOCK (wrklock); \ 176#if !_POSIX_MAPPED_FILES
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 177# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
88 UNLOCK (wrklock); \ 178# define munmap(addr,length) EIO_ENOSYS ()
89 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
90 return -1; 205 return 0;
206}
91 207
92enum { 208static MGVTBL mmap_vtbl = {
93 REQ_QUIT, 209 0, 0, 0, 0, mmap_free
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104}; 210};
105 211
106#define AIO_REQ_KLASS "IO::AIO::REQ" 212static int ecb_cold
107#define AIO_GRP_KLASS "IO::AIO::GRP" 213sysfree_free (pTHX_ SV *sv, MAGIC *mg)
108
109typedef struct aio_cb
110{ 214{
111 struct aio_cb *volatile next; 215 free (mg->mg_ptr);
216 mg->mg_obj = 0; /* just in case */
112 217
113 SV *data, *callback; 218 SvREADONLY_off (sv);
114 SV *fh, *fh2;
115 void *dataptr, *data2ptr;
116 Stat_t *statdata;
117 off_t offset;
118 size_t length;
119 ssize_t result;
120 219
121 STRLEN dataoffset; 220 if (SvPVX (sv) != mg->mg_ptr)
122 int type; 221 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
123 int fd, fd2;
124 int errorno;
125 mode_t mode; /* open */
126 222
127 unsigned char flags; 223 SvCUR_set (sv, 0);
128 unsigned char pri; 224 SvPVX (sv) = 0;
225 SvOK_off (sv);
129 226
130 SV *self; /* the perl counterpart of this request, if any */ 227 return 0;
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 228}
132} aio_cb;
133 229
134enum { 230static MGVTBL sysfree_vtbl = {
135 FLAG_CANCELLED = 0x01, 231 0, 0, 0, 0, sysfree_free
136}; 232};
137 233
138typedef aio_cb *aio_req; 234/*****************************************************************************/
139typedef aio_cb *aio_req_ornot;
140 235
141enum { 236/* helper: set scalar to foreign ptr with custom free */
142 PRI_MIN = -4, 237static void
143 PRI_MAX = 4, 238sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
144
145 DEFAULT_PRI = 0,
146 PRI_BIAS = -PRI_MIN,
147 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148};
149
150static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152static unsigned int started, idle, wanted;
153
154#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156#else
157# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158#endif
159
160#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163/* worker threads management */
164static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166typedef struct worker {
167 /* locked by wrklock */
168 struct worker *prev, *next;
169
170 pthread_t tid;
171
172 /* locked by reslock, reqlock or wrklock */
173 aio_req req; /* currently processed request */
174 void *dbuf;
175 DIR *dirp;
176} worker;
177
178static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180static void worker_clear (worker *wrk)
181{ 239{
182 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 (;;)
183 { 315 {
184 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) */
185 wrk->dirp = 0; 317 char scratch[3072];
186 } 318 struct fiemap *incmap = (struct fiemap *)scratch;
187 319
188 if (wrk->dbuf) 320 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
189 { 321 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
190 free (wrk->dbuf); 322 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
191 wrk->dbuf = 0; 323 incmap->fm_flags = fiemap->fm_flags;
192 } 324 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
193}
194 325
195static void worker_free (worker *wrk) 326 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
196{
197 wrk->next->prev = wrk->prev;
198 wrk->prev->next = wrk->next;
199
200 free (wrk);
201}
202
203static volatile unsigned int nreqs, nready, npending;
204static volatile unsigned int max_idle = 4;
205static volatile unsigned int max_outstanding = 0xffffffff;
206static int respipe [2];
207
208static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212#if WORDREAD_UNSAFE
213
214static unsigned int get_nready ()
215{
216 unsigned int retval;
217
218 LOCK (reqlock);
219 retval = nready;
220 UNLOCK (reqlock);
221
222 return retval;
223}
224
225static unsigned int get_npending ()
226{
227 unsigned int retval;
228
229 LOCK (reslock);
230 retval = npending;
231 UNLOCK (reslock);
232
233 return retval;
234}
235
236#else
237
238# define get_nready() nready
239# define get_npending() npending
240
241#endif
242
243/*
244 * a somewhat faster data structure might be nice, but
245 * with 8 priorities this actually needs <20 insns
246 * per shift, the most expensive operation.
247 */
248typedef struct {
249 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250 int size;
251} reqq;
252
253static reqq req_queue;
254static reqq res_queue;
255
256int reqq_push (reqq *q, aio_req req)
257{
258 int pri = req->pri;
259 req->next = 0;
260
261 if (q->qe[pri])
262 {
263 q->qe[pri]->next = req;
264 q->qe[pri] = req;
265 }
266 else
267 q->qe[pri] = q->qs[pri] = req;
268
269 return q->size++;
270}
271
272aio_req reqq_shift (reqq *q)
273{
274 int pri;
275
276 if (!q->size)
277 return 0; 327 return;
278 328
279 --q->size; 329 if (!incmap->fm_mapped_extents)
330 goto done;
280 331
281 for (pri = NUM_PRI; pri--; ) 332 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
282 { 333 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
283 aio_req req = q->qs[pri]; 334 errno = ENOMEM;
284
285 if (req) 335 if (!fiemap)
336 return;
337
338 req->ptr1 = fiemap;
339
340 for (count = 0; count < incmap->fm_mapped_extents; ++count)
286 { 341 {
287 if (!(q->qs[pri] = req->next)) 342 struct fiemap_extent *e = incmap->fm_extents + count;
288 q->qe[pri] = 0;
289 343
290 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
291 } 352 }
292 } 353 }
293 354
294 abort (); 355done:
295} 356 req->result = 0;
296 357
297static int poll_cb (int max); 358#else
298static 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
299static void req_free (aio_req req); 379static void req_destroy (aio_req req);
300static void req_cancel (aio_req req); 380static void req_cancel (aio_req req);
301 381
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
302/* must be called at most once */ 396/* must be called at most once */
303static SV *req_sv (aio_req req, const char *klass) 397static SV *
398req_sv (aio_req req, HV *stash)
304{ 399{
305 if (!req->self) 400 if (!req->self)
306 { 401 {
307 req->self = (SV *)newHV (); 402 req->self = (SV *)newHV ();
308 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 403 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
309 } 404 }
310 405
311 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 406 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
312} 407}
313 408
314static 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)
315{ 417{
316 MAGIC *mg; 418 MAGIC *mg;
317 419
318 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")))
319 croak ("object of class " AIO_REQ_KLASS " expected"); 425 croak ("object of class IO::AIO::REQ expected");
320 426
321 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 427 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
322 428
323 return mg ? (aio_req)mg->mg_ptr : 0; 429 return mg ? (aio_req)mg->mg_ptr : 0;
324} 430}
325 431
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
326static void aio_grp_feed (aio_req grp) 469aio_grp_feed (aio_req grp)
327{ 470{
328 while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) 471 if (grp->sv2 && SvOK (grp->sv2))
329 { 472 {
330 int old_len = grp->length;
331
332 if (grp->fh2 && SvOK (grp->fh2))
333 {
334 dSP; 473 dSP;
335 474
336 ENTER; 475 ENTER;
337 SAVETMPS; 476 SAVETMPS;
338 PUSHMARK (SP); 477 PUSHMARK (SP);
339 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 478 XPUSHs (req_sv (grp, aio_grp_stash));
340 PUTBACK; 479 PUTBACK;
341 call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); 480 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342 SPAGAIN; 481 SPAGAIN;
343 FREETMPS; 482 FREETMPS;
344 LEAVE; 483 LEAVE;
345 }
346
347 /* stop if no progress has been made */
348 if (old_len == grp->length)
349 {
350 SvREFCNT_dec (grp->fh2);
351 grp->fh2 = 0;
352 break;
353 }
354 } 484 }
355} 485}
356 486
357static void aio_grp_dec (aio_req grp) 487static void
488req_submit (eio_req *req)
358{ 489{
359 --grp->length; 490 eio_submit (req);
360 491
361 /* call feeder, if applicable */ 492 if (expect_false (on_next_submit))
362 aio_grp_feed (grp);
363
364 /* finish, if done */
365 if (!grp->length && grp->fd)
366 { 493 {
367 req_invoke (grp); 494 dSP;
368 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);
369 } 502 }
370} 503}
371 504
505static int
372static void req_invoke (aio_req req) 506req_invoke (eio_req *req)
373{ 507{
374 dSP; 508 if (req->flags & FLAG_SV2_RO_OFF)
509 SvREADONLY_off (req->sv2);
375 510
376 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 511 if (!EIO_CANCELLED (req) && req->callback)
377 { 512 {
513 dSP;
514 static SV *sv_result_cache; /* caches the result integer SV */
515 SV *sv_result;
516
378 ENTER; 517 ENTER;
379 SAVETMPS; 518 SAVETMPS;
380 PUSHMARK (SP); 519 PUSHMARK (SP);
381 EXTEND (SP, 1); 520 EXTEND (SP, 1);
382 521
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
383 switch (req->type) 535 switch (req->type)
384 { 536 {
537 case EIO_WD_OPEN:
538 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
539 break;
540
385 case REQ_READDIR: 541 case EIO_READDIR:
386 { 542 {
387 SV *rv = &PL_sv_undef; 543 SV *rv = &PL_sv_undef;
388 544
389 if (req->result >= 0) 545 if (req->result >= 0)
390 { 546 {
391 int i; 547 int i;
392 char *buf = req->data2ptr; 548 char *names = (char *)req->ptr2;
549 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
393 AV *av = newAV (); 550 AV *av = newAV ();
394 551
395 av_extend (av, req->result - 1); 552 av_extend (av, req->result - 1);
396 553
397 for (i = 0; i < req->result; ++i) 554 for (i = 0; i < req->result; ++i)
398 { 555 {
399 SV *sv = newSVpv (buf, 0); 556 if (req->int1 & EIO_READDIR_DENTS)
557 {
558 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
400 559
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
401 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);
402 buf += SvCUR (sv) + 1; 588 names += SvCUR (name) + 1;
589 }
403 } 590 }
404 591
405 rv = sv_2mortal (newRV_noinc ((SV *)av)); 592 rv = sv_2mortal (newRV_noinc ((SV *)av));
406 } 593 }
407 594
408 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))));
409 } 599 }
410 break; 600 break;
411 601
412 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:
413 { 608 {
414 /* convert fd to fh */ 609 SV *rv = &PL_sv_undef;
415 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));
416 621
417 PUSHs (sv_2mortal (newSViv (req->result))); 622 rv = sv_2mortal (newRV_noinc ((SV *)hv));
418 PUTBACK;
419 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
420 SPAGAIN;
421 623
422 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
423 637
424 PUSHMARK (SP); 638 PUSHs (rv);
425 XPUSHs (sv_2mortal (fh));
426 } 639 }
640
427 break; 641 break;
428 642
429 case REQ_GROUP: 643 case EIO_GROUP:
430 req->fd = 2; /* mark group as finished */ 644 req->int1 = 2; /* mark group as finished */
431 645
432 if (req->data) 646 if (req->sv1)
433 { 647 {
434 int i; 648 int i;
435 AV *av = (AV *)req->data; 649 AV *av = (AV *)req->sv1;
436 650
437 EXTEND (SP, AvFILL (av) + 1); 651 EXTEND (SP, AvFILL (av) + 1);
438 for (i = 0; i <= AvFILL (av); ++i) 652 for (i = 0; i <= AvFILL (av); ++i)
439 PUSHs (*av_fetch (av, i, 0)); 653 PUSHs (*av_fetch (av, i, 0));
440 } 654 }
441 break; 655 break;
442 656
443 case REQ_NOP: 657 case EIO_NOP:
444 case REQ_BUSY: 658 case EIO_BUSY:
445 break; 659 break;
446 660
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 SvCUR_set (req->sv2, req->result);
705 }
706
707 PUSHs (sv_result);
708 }
709 break;
710
711 case EIO_CUSTOM:
712 if (req->feed == fiemap)
713 {
714#if HAVE_FIEMAP
715 if (!req->result)
716 {
717 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
718
719 if (fiemap->fm_extent_count)
720 {
721 AV *av = newAV ();
722 int i;
723
724 while (fiemap->fm_mapped_extents)
725 {
726 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
727 AV *ext_av = newAV ();
728
729 av_store (ext_av, 3, newSVuv (extent->fe_flags));
730 av_store (ext_av, 2, newSVval64 (extent->fe_length));
731 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
732 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
733
734 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
735 }
736
737 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
738 }
739 else
740 {
741 SvIV_set (sv_result, fiemap->fm_mapped_extents);
742 PUSHs (sv_result);
743 }
744 }
745#endif
746 }
747 else
748 PUSHs (sv_result);
749 break;
750
751 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
752 if (req->result > 0)
753 SvIV_set (sv_result, 0);
754 /* FALLTHROUGH */
755
447 default: 756 default:
448 PUSHs (sv_2mortal (newSViv (req->result))); 757 PUSHs (sv_result);
449 break; 758 break;
450 } 759 }
451 760
452 errno = req->errorno; 761 errno = req->errorno;
453 762
454 PUTBACK; 763 PUTBACK;
455 call_sv (req->callback, G_VOID | G_EVAL); 764 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456 SPAGAIN; 765 SPAGAIN;
766
767 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
768 SvREFCNT_dec (sv_result);
769 else
770 sv_result_cache = sv_result;
457 771
458 FREETMPS; 772 FREETMPS;
459 LEAVE; 773 LEAVE;
774
775 PUTBACK;
460 } 776 }
461 777
462 if (req->grp) 778 return !!SvTRUE (ERRSV);
463 {
464 aio_req grp = req->grp;
465
466 /* unlink request */
467 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470 if (grp->grp_first == req)
471 grp->grp_first = req->grp_next;
472
473 aio_grp_dec (grp);
474 }
475
476 if (SvTRUE (ERRSV))
477 {
478 req_free (req);
479 croak (0);
480 }
481} 779}
482 780
483static void req_free (aio_req req) 781static void
782req_destroy (aio_req req)
484{ 783{
485 if (req->self) 784 if (req->self)
486 { 785 {
487 sv_unmagic (req->self, PERL_MAGIC_ext); 786 sv_unmagic (req->self, PERL_MAGIC_ext);
488 SvREFCNT_dec (req->self); 787 SvREFCNT_dec (req->self);
489 } 788 }
490 789
491 SvREFCNT_dec (req->data);
492 SvREFCNT_dec (req->fh); 790 SvREFCNT_dec (req->sv1);
493 SvREFCNT_dec (req->fh2); 791 SvREFCNT_dec (req->sv2);
792 SvREFCNT_dec (req->sv3);
793 SvREFCNT_dec (req->sv4);
494 SvREFCNT_dec (req->callback); 794 SvREFCNT_dec (req->callback);
495 Safefree (req->statdata);
496 795
497 if (req->type == REQ_READDIR)
498 free (req->data2ptr);
499
500 Safefree (req); 796 free (req);
501} 797}
502 798
799static void
503static void req_cancel_subs (aio_req grp) 800req_cancel_subs (aio_req grp)
504{ 801{
505 aio_req sub;
506
507 if (grp->type != REQ_GROUP) 802 if (grp->type != EIO_GROUP)
508 return; 803 return;
509 804
510 SvREFCNT_dec (grp->fh2); 805 SvREFCNT_dec (grp->sv2);
511 grp->fh2 = 0; 806 grp->sv2 = 0;
512 807
513 for (sub = grp->grp_first; sub; sub = sub->grp_next) 808 eio_grp_cancel (grp);
514 req_cancel (sub);
515} 809}
516 810
517static void req_cancel (aio_req req) 811static void ecb_cold
812create_respipe (void)
518{ 813{
519 req->flags |= FLAG_CANCELLED; 814 if (s_epipe_renew (&respipe))
520 815 croak ("IO::AIO: unable to initialize result pipe");
521 req_cancel_subs (req);
522} 816}
523 817
524static void *aio_proc(void *arg); 818static void
525 819poll_wait (void)
526static void start_thread (void)
527{ 820{
528 sigset_t fullsigset, oldsigset;
529 pthread_attr_t attr;
530
531 worker *wrk = calloc (1, sizeof (worker));
532
533 if (!wrk)
534 croak ("unable to allocate worker thread data");
535
536 pthread_attr_init (&attr);
537 pthread_attr_setstacksize (&attr, STACKSIZE);
538 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539#ifdef PTHREAD_SCOPE_PROCESS
540 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541#endif
542
543 sigfillset (&fullsigset);
544
545 LOCK (wrklock);
546 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
547
548 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
549 {
550 wrk->prev = &wrk_first;
551 wrk->next = wrk_first.next;
552 wrk_first.next->prev = wrk;
553 wrk_first.next = wrk;
554 ++started;
555 }
556 else
557 free (wrk);
558
559 sigprocmask (SIG_SETMASK, &oldsigset, 0);
560 UNLOCK (wrklock);
561}
562
563static void maybe_start_thread ()
564{
565 if (started >= wanted)
566 return;
567
568 /* todo: maybe use idle here, but might be less exact */
569 if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570 return;
571
572 start_thread ();
573}
574
575static void req_send (aio_req req)
576{
577 ++nreqs;
578
579 LOCK (reqlock);
580 ++nready;
581 reqq_push (&req_queue, req);
582 pthread_cond_signal (&reqwait);
583 UNLOCK (reqlock);
584
585 maybe_start_thread ();
586}
587
588static void end_thread (void)
589{
590 aio_req req;
591
592 Newz (0, req, 1, aio_cb);
593
594 req->type = REQ_QUIT;
595 req->pri = PRI_MAX + PRI_BIAS;
596
597 LOCK (reqlock);
598 reqq_push (&req_queue, req);
599 pthread_cond_signal (&reqwait);
600 UNLOCK (reqlock);
601
602 LOCK (wrklock);
603 --started;
604 UNLOCK (wrklock);
605}
606
607static void min_parallel (int nthreads)
608{
609 if (wanted < nthreads)
610 wanted = nthreads;
611}
612
613static void max_parallel (int nthreads)
614{
615 if (wanted > nthreads)
616 wanted = nthreads;
617
618 while (started > wanted)
619 end_thread ();
620}
621
622static void poll_wait ()
623{
624 fd_set rfd;
625
626 while (nreqs) 821 while (eio_nreqs ())
627 { 822 {
628 int size; 823 int size;
629 if (WORDREAD_UNSAFE) LOCK (reslock); 824
825 X_LOCK (EIO_POOL->reslock);
630 size = res_queue.size; 826 size = EIO_POOL->res_queue.size;
631 if (WORDREAD_UNSAFE) UNLOCK (reslock); 827 X_UNLOCK (EIO_POOL->reslock);
632 828
633 if (size) 829 if (size)
634 return; 830 return;
635 831
636 maybe_start_thread (); 832 etp_maybe_start_thread (EIO_POOL);
637 833
638 FD_ZERO(&rfd); 834 s_epipe_wait (&respipe);
639 FD_SET(respipe [0], &rfd);
640
641 select (respipe [0] + 1, &rfd, 0, 0, 0);
642 } 835 }
643} 836}
644 837
645static int poll_cb (int max) 838static int
839poll_cb (void)
646{ 840{
647 dSP;
648 int count = 0;
649 int do_croak = 0;
650 aio_req req;
651
652 for (;;) 841 for (;;)
653 { 842 {
654 while (max <= 0 || count < max) 843 int res = eio_poll ();
844
845 if (res > 0)
846 croak (0);
847
848 if (!max_outstanding || max_outstanding > eio_nreqs ())
849 return res;
850
851 poll_wait ();
852 }
853}
854
855static void ecb_cold
856reinit (void)
857{
858 create_respipe ();
859
860 if (eio_init (want_poll, done_poll) < 0)
861 croak ("IO::AIO: unable to initialise eio library");
862}
863
864/*****************************************************************************/
865
866static SV *
867get_cb (SV *cb_sv)
868{
869 SvGETMAGIC (cb_sv);
870 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
871}
872
873static aio_req ecb_noinline
874dreq (SV *callback)
875{
876 SV *cb_cv;
877 aio_req req;
878 int req_pri = next_pri;
879 next_pri = EIO_PRI_DEFAULT;
880
881 cb_cv = get_cb (callback);
882
883 req = calloc (sizeof (*req), 1);
884 if (!req)
885 croak ("out of memory during eio_req allocation");
886
887 req->callback = SvREFCNT_inc (cb_cv);
888 req->pri = req_pri;
889
890 return req;
891}
892
893#define dREQ \
894 aio_req req = dreq (callback); \
895
896#define REQ_SEND \
897 PUTBACK; \
898 req_submit (req); \
899 SPAGAIN; \
900 \
901 if (GIMME_V != G_VOID) \
902 XPUSHs (req_sv (req, aio_req_stash));
903
904ecb_inline void
905req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
906{
907 if (expect_false (SvROK (path)))
908 {
909 SV *rv = SvRV (path);
910 SV *wdob;
911
912 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
655 { 913 {
656 maybe_start_thread (); 914 path = AvARRAY (rv)[1];
915 wdob = AvARRAY (rv)[0];
657 916
658 LOCK (reslock); 917 if (SvOK (wdob))
659 req = reqq_shift (&res_queue);
660
661 if (req)
662 { 918 {
663 --npending; 919 *wd = SvAIO_WD (wdob);
664 920 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
665 if (!res_queue.size)
666 {
667 /* read any signals sent by the worker threads */
668 char buf [32];
669 while (read (respipe [0], buf, 32) == 32)
670 ;
671 }
672 }
673
674 UNLOCK (reslock);
675
676 if (!req)
677 break;
678
679 --nreqs;
680
681 if (req->type == REQ_GROUP && req->length)
682 {
683 req->fd = 1; /* mark request as delayed */
684 continue;
685 } 921 }
686 else 922 else
687 { 923 *wd = EIO_INVALID_WD;
688 if (req->type == REQ_READ)
689 SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691 if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692 SvREADONLY_off (req->data);
693
694 if (req->statdata)
695 {
696 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697 PL_laststatval = req->result;
698 PL_statcache = *(req->statdata);
699 }
700
701 req_invoke (req);
702
703 count++;
704 }
705
706 req_free (req);
707 } 924 }
925 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
926 {
927 *wd = (aio_wd)(long)SvIVX (rv);
928 *wdsv = SvREFCNT_inc_NN (rv);
929 *ptr = ".";
930 return; /* path set to "." */
931 }
932 else
933 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
934 }
708 935
709 if (nreqs <= max_outstanding) 936 *pathsv = newSVsv (path);
937 *ptr = SvPVbyte_nolen (*pathsv);
938}
939
940static void ecb_noinline
941req_set_path1 (aio_req req, SV *path)
942{
943 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
944}
945
946static void ecb_noinline
947req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
948{
949 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
950
951 switch (SvTYPE (rv))
952 {
953 case SVt_PVIO:
954 case SVt_PVLV:
955 case SVt_PVGV:
956 req->type = type_fh;
957 req->sv1 = newSVsv (fh_or_path);
958 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
710 break; 959 break;
711 960
712 poll_wait (); 961 default:
713 962 req->type = type_path;
714 max = 0; 963 req_set_path1 (req, fh_or_path);
964 break;
715 } 965 }
716
717 return count;
718} 966}
719 967
720static void create_pipe () 968XS(boot_IO__AIO) ecb_cold;
721{
722 if (pipe (respipe))
723 croak ("unable to initialize result pipe");
724 969
725 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726 croak ("cannot set result pipe to nonblocking mode");
727
728 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729 croak ("cannot set result pipe to nonblocking mode");
730}
731
732/*****************************************************************************/
733/* work around various missing functions */
734
735#if !HAVE_PREADWRITE
736# define pread aio_pread
737# define pwrite aio_pwrite
738
739/*
740 * make our pread/pwrite safe against themselves, but not against
741 * normal read/write by using a mutex. slows down execution a lot,
742 * but that's your problem, not mine.
743 */
744static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747{
748 ssize_t res;
749 off_t ooffset;
750
751 LOCK (preadwritelock);
752 ooffset = lseek (fd, 0, SEEK_CUR);
753 lseek (fd, offset, SEEK_SET);
754 res = read (fd, buf, count);
755 lseek (fd, ooffset, SEEK_SET);
756 UNLOCK (preadwritelock);
757
758 return res;
759}
760
761static ssize_t pwrite (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 = write (fd, buf, count);
770 lseek (fd, offset, SEEK_SET);
771 UNLOCK (preadwritelock);
772
773 return res;
774}
775#endif
776
777#if !HAVE_FDATASYNC
778# define fdatasync fsync
779#endif
780
781#if !HAVE_READAHEAD
782# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785{
786 dBUF;
787
788 while (count > 0)
789 {
790 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792 pread (fd, aio_buf, len, offset);
793 offset += len;
794 count -= len;
795 }
796
797 errno = 0;
798}
799
800#endif
801
802#if !HAVE_READDIR_R
803# define readdir_r aio_readdir_r
804
805static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808{
809 struct dirent *e;
810 int errorno;
811
812 LOCK (readdirlock);
813
814 e = readdir (dirp);
815 errorno = errno;
816
817 if (e)
818 {
819 *res = ent;
820 strcpy (ent->d_name, e->d_name);
821 }
822 else
823 *res = 0;
824
825 UNLOCK (readdirlock);
826
827 errno = errorno;
828 return e ? 0 : -1;
829}
830#endif
831
832/* sendfile always needs emulation */
833static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834{
835 ssize_t res;
836
837 if (!count)
838 return 0;
839
840#if HAVE_SENDFILE
841# if __linux
842 res = sendfile (ofd, ifd, &offset, count);
843
844# elif __freebsd
845 /*
846 * Of course, the freebsd sendfile is a dire hack with no thoughts
847 * wasted on making it similar to other I/O functions.
848 */
849 {
850 off_t sbytes;
851 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852
853 if (res < 0 && sbytes)
854 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855 res = sbytes;
856 }
857
858# elif __hpux
859 res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861# elif __solaris
862 {
863 struct sendfilevec vec;
864 size_t sbytes;
865
866 vec.sfv_fd = ifd;
867 vec.sfv_flag = 0;
868 vec.sfv_off = offset;
869 vec.sfv_len = count;
870
871 res = sendfilev (ofd, &vec, 1, &sbytes);
872
873 if (res < 0 && sbytes)
874 res = sbytes;
875 }
876
877# endif
878#else
879 res = -1;
880 errno = ENOSYS;
881#endif
882
883 if (res < 0
884 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
885#if __solaris
886 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
887#endif
888 )
889 )
890 {
891 /* emulate sendfile. this is a major pain in the ass */
892 dBUF;
893
894 res = 0;
895
896 while (count)
897 {
898 ssize_t cnt;
899
900 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
901
902 if (cnt <= 0)
903 {
904 if (cnt && !res) res = -1;
905 break;
906 }
907
908 cnt = write (ofd, aio_buf, cnt);
909
910 if (cnt <= 0)
911 {
912 if (cnt && !res) res = -1;
913 break;
914 }
915
916 offset += cnt;
917 res += cnt;
918 count -= cnt;
919 }
920 }
921
922 return res;
923}
924
925/* read a full directory */
926static void scandir_ (aio_req req, worker *self)
927{
928 DIR *dirp;
929 union
930 {
931 struct dirent d;
932 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933 } *u;
934 struct dirent *entp;
935 char *name, *names;
936 int memlen = 4096;
937 int memofs = 0;
938 int res = 0;
939 int errorno;
940
941 LOCK (wrklock);
942 self->dirp = dirp = opendir (req->dataptr);
943 self->dbuf = u = malloc (sizeof (*u));
944 req->data2ptr = names = malloc (memlen);
945 UNLOCK (wrklock);
946
947 if (dirp && u && names)
948 for (;;)
949 {
950 errno = 0;
951 readdir_r (dirp, &u->d, &entp);
952
953 if (!entp)
954 break;
955
956 name = entp->d_name;
957
958 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959 {
960 int len = strlen (name) + 1;
961
962 res++;
963
964 while (memofs + len > memlen)
965 {
966 memlen *= 2;
967 LOCK (wrklock);
968 req->data2ptr = names = realloc (names, memlen);
969 UNLOCK (wrklock);
970
971 if (!names)
972 break;
973 }
974
975 memcpy (names + memofs, name, len);
976 memofs += len;
977 }
978 }
979
980 if (errno)
981 res = -1;
982
983 req->result = res;
984}
985
986/*****************************************************************************/
987
988static void *aio_proc (void *thr_arg)
989{
990 aio_req req;
991 struct timespec ts;
992 worker *self = (worker *)thr_arg;
993
994 /* try to distribute timeouts somewhat evenly */
995 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996 * (1000000000UL / 1024UL);
997
998 for (;;)
999 {
1000 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002 LOCK (reqlock);
1003
1004 for (;;)
1005 {
1006 self->req = req = reqq_shift (&req_queue);
1007
1008 if (req)
1009 break;
1010
1011 ++idle;
1012
1013 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014 == ETIMEDOUT)
1015 {
1016 if (idle > max_idle)
1017 {
1018 --idle;
1019 UNLOCK (reqlock);
1020 LOCK (wrklock);
1021 --started;
1022 UNLOCK (wrklock);
1023 goto quit;
1024 }
1025
1026 /* we are allowed to idle, so do so without any timeout */
1027 pthread_cond_wait (&reqwait, &reqlock);
1028 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029 }
1030
1031 --idle;
1032 }
1033
1034 --nready;
1035
1036 UNLOCK (reqlock);
1037
1038 errno = 0; /* strictly unnecessary */
1039
1040 if (!(req->flags & FLAG_CANCELLED))
1041 switch (req->type)
1042 {
1043 case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044 case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046 case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047 case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049 case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050 case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051 case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053 case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054 case REQ_CLOSE: req->result = close (req->fd); break;
1055 case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056 case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057 case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058 case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059 case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060 case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062 case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063 case REQ_FSYNC: req->result = fsync (req->fd); break;
1064 case REQ_READDIR: scandir_ (req, self); break;
1065
1066 case REQ_BUSY:
1067 {
1068 struct timeval tv;
1069
1070 tv.tv_sec = req->fd;
1071 tv.tv_usec = req->fd2;
1072
1073 req->result = select (0, 0, 0, 0, &tv);
1074 }
1075
1076 case REQ_GROUP:
1077 case REQ_NOP:
1078 break;
1079
1080 case REQ_QUIT:
1081 goto quit;
1082
1083 default:
1084 req->result = ENOSYS;
1085 break;
1086 }
1087
1088 req->errorno = errno;
1089
1090 LOCK (reslock);
1091
1092 ++npending;
1093
1094 if (!reqq_push (&res_queue, req))
1095 /* write a dummy byte to the pipe so fh becomes ready */
1096 write (respipe [1], &respipe, 1);
1097
1098 self->req = 0;
1099 worker_clear (self);
1100
1101 UNLOCK (reslock);
1102 }
1103
1104quit:
1105 LOCK (wrklock);
1106 worker_free (self);
1107 UNLOCK (wrklock);
1108
1109 return 0;
1110}
1111
1112/*****************************************************************************/
1113
1114static void atfork_prepare (void)
1115{
1116 LOCK (wrklock);
1117 LOCK (reqlock);
1118 LOCK (reslock);
1119#if !HAVE_PREADWRITE
1120 LOCK (preadwritelock);
1121#endif
1122#if !HAVE_READDIR_R
1123 LOCK (readdirlock);
1124#endif
1125}
1126
1127static void atfork_parent (void)
1128{
1129#if !HAVE_READDIR_R
1130 UNLOCK (readdirlock);
1131#endif
1132#if !HAVE_PREADWRITE
1133 UNLOCK (preadwritelock);
1134#endif
1135 UNLOCK (reslock);
1136 UNLOCK (reqlock);
1137 UNLOCK (wrklock);
1138}
1139
1140static void atfork_child (void)
1141{
1142 aio_req prv;
1143
1144 while (prv = reqq_shift (&req_queue))
1145 req_free (prv);
1146
1147 while (prv = reqq_shift (&res_queue))
1148 req_free (prv);
1149
1150 while (wrk_first.next != &wrk_first)
1151 {
1152 worker *wrk = wrk_first.next;
1153
1154 if (wrk->req)
1155 req_free (wrk->req);
1156
1157 worker_clear (wrk);
1158 worker_free (wrk);
1159 }
1160
1161 started = 0;
1162 idle = 0;
1163 nreqs = 0;
1164 nready = 0;
1165 npending = 0;
1166
1167 close (respipe [0]);
1168 close (respipe [1]);
1169 create_pipe ();
1170
1171 atfork_parent ();
1172}
1173
1174#define dREQ \
1175 aio_req req; \
1176 int req_pri = next_pri; \
1177 next_pri = DEFAULT_PRI + PRI_BIAS; \
1178 \
1179 if (SvOK (callback) && !SvROK (callback)) \
1180 croak ("callback must be undef or of reference type"); \
1181 \
1182 Newz (0, req, 1, aio_cb); \
1183 if (!req) \
1184 croak ("out of memory during aio_req allocation"); \
1185 \
1186 req->callback = newSVsv (callback); \
1187 req->pri = req_pri
1188
1189#define REQ_SEND \
1190 req_send (req); \
1191 \
1192 if (GIMME_V != G_VOID) \
1193 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194
1195MODULE = IO::AIO PACKAGE = IO::AIO 970MODULE = IO::AIO PACKAGE = IO::AIO
1196 971
1197PROTOTYPES: ENABLE 972PROTOTYPES: ENABLE
1198 973
1199BOOT: 974BOOT:
1200{ 975{
976 static const struct {
977 const char *name;
978 IV iv;
979 } *civ, const_iv[] = {
980# define const_niv(name, value) { # name, (IV) value },
981# define const_iv(name) { # name, (IV) name },
982# define const_eio(name) { # name, (IV) EIO_ ## name },
983
984 /* you have to re-run ./gendef0 after adding/removing any constants here */
985 /* the first block can be undef if missing */
986 const_iv (ENOSYS)
987 const_iv (EXDEV)
988 const_iv (EBADR)
989
990 /* for lseek */
991 const_iv (SEEK_DATA)
992 const_iv (SEEK_HOLE)
993
994 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
995 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
996 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
997 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
998 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
999 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1000
1001 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1002 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1003 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1004 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1005 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1006
1007 /* the second block will be 0 when missing */
1008 const_iv (O_RDONLY)
1009 const_iv (O_WRONLY)
1010 const_iv (O_RDWR)
1011 const_iv (O_CREAT)
1012 const_iv (O_TRUNC)
1013 const_iv (O_EXCL)
1014 const_iv (O_APPEND)
1015
1016 const_iv (O_ASYNC)
1017 const_iv (O_DIRECT)
1018 const_iv (O_NOATIME)
1019
1020 const_iv (O_CLOEXEC)
1021 const_iv (O_NOCTTY)
1022 const_iv (O_NOFOLLOW)
1023 const_iv (O_NONBLOCK)
1024 const_iv (O_EXEC)
1025 const_iv (O_SEARCH)
1026 const_iv (O_DIRECTORY)
1027 const_iv (O_DSYNC)
1028 const_iv (O_RSYNC)
1029 const_iv (O_SYNC)
1030 const_iv (O_PATH)
1031 const_iv (O_TMPFILE)
1032 const_iv (O_TTY_INIT)
1033
1034 const_iv (S_IFIFO)
1035 const_iv (S_IFCHR)
1036 const_iv (S_IFBLK)
1037 const_iv (S_IFLNK)
1038 const_iv (S_IFREG)
1039 const_iv (S_IFDIR)
1040 const_iv (S_IFWHT)
1041 const_iv (S_IFSOCK)
1042 const_iv (S_IFMT)
1043
1044 const_iv (ST_RDONLY)
1045 const_iv (ST_NOSUID)
1046 const_iv (ST_NODEV)
1047 const_iv (ST_NOEXEC)
1048 const_iv (ST_SYNCHRONOUS)
1049 const_iv (ST_MANDLOCK)
1050 const_iv (ST_WRITE)
1051 const_iv (ST_APPEND)
1052 const_iv (ST_IMMUTABLE)
1053 const_iv (ST_NOATIME)
1054 const_iv (ST_NODIRATIME)
1055 const_iv (ST_RELATIME)
1056
1057 const_iv (PROT_NONE)
1058 const_iv (PROT_EXEC)
1059 const_iv (PROT_READ)
1060 const_iv (PROT_WRITE)
1061
1062 const_iv (MAP_PRIVATE)
1063 const_iv (MAP_SHARED)
1064 const_iv (MAP_FIXED)
1065 const_iv (MAP_ANONYMOUS)
1066
1067 /* linuxish */
1068 const_iv (MAP_LOCKED)
1069 const_iv (MAP_NORESERVE)
1070 const_iv (MAP_POPULATE)
1071 const_iv (MAP_NONBLOCK)
1072 const_iv (MAP_GROWSDOWN)
1073 const_iv (MAP_32BIT)
1074 const_iv (MAP_HUGETLB)
1075 const_iv (MAP_STACK)
1076
1077 const_iv (F_DUPFD_CLOEXEC)
1078
1079 const_iv (F_OFD_GETLK)
1080 const_iv (F_OFD_SETLK)
1081 const_iv (F_OFD_GETLKW)
1082
1083 const_iv (FIFREEZE)
1084 const_iv (FITHAW)
1085 const_iv (FITRIM)
1086 const_iv (FICLONE)
1087 const_iv (FICLONERANGE)
1088 const_iv (FIDEDUPERANGE)
1089
1090 const_iv (FS_IOC_GETFLAGS)
1091 const_iv (FS_IOC_SETFLAGS)
1092 const_iv (FS_IOC_GETVERSION)
1093 const_iv (FS_IOC_SETVERSION)
1094 const_iv (FS_IOC_FIEMAP)
1095 const_iv (FS_IOC_FSGETXATTR)
1096 const_iv (FS_IOC_FSSETXATTR)
1097 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1098 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1099 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1100
1101 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1102
1103 const_iv (FS_SECRM_FL)
1104 const_iv (FS_UNRM_FL)
1105 const_iv (FS_COMPR_FL)
1106 const_iv (FS_SYNC_FL)
1107 const_iv (FS_IMMUTABLE_FL)
1108 const_iv (FS_APPEND_FL)
1109 const_iv (FS_NODUMP_FL)
1110 const_iv (FS_NOATIME_FL)
1111 const_iv (FS_DIRTY_FL)
1112 const_iv (FS_COMPRBLK_FL)
1113 const_iv (FS_NOCOMP_FL)
1114 const_iv (FS_ENCRYPT_FL)
1115 const_iv (FS_BTREE_FL)
1116 const_iv (FS_INDEX_FL)
1117 const_iv (FS_JOURNAL_DATA_FL)
1118 const_iv (FS_NOTAIL_FL)
1119 const_iv (FS_DIRSYNC_FL)
1120 const_iv (FS_TOPDIR_FL)
1121 const_iv (FS_FL_USER_MODIFIABLE)
1122
1123 const_iv (FS_XFLAG_REALTIME)
1124 const_iv (FS_XFLAG_PREALLOC)
1125 const_iv (FS_XFLAG_IMMUTABLE)
1126 const_iv (FS_XFLAG_APPEND)
1127 const_iv (FS_XFLAG_SYNC)
1128 const_iv (FS_XFLAG_NOATIME)
1129 const_iv (FS_XFLAG_NODUMP)
1130 const_iv (FS_XFLAG_RTINHERIT)
1131 const_iv (FS_XFLAG_PROJINHERIT)
1132 const_iv (FS_XFLAG_NOSYMLINKS)
1133 const_iv (FS_XFLAG_EXTSIZE)
1134 const_iv (FS_XFLAG_EXTSZINHERIT)
1135 const_iv (FS_XFLAG_NODEFRAG)
1136 const_iv (FS_XFLAG_FILESTREAM)
1137 const_iv (FS_XFLAG_DAX)
1138 const_iv (FS_XFLAG_HASATTR)
1139
1140 const_iv (FIEMAP_FLAG_SYNC)
1141 const_iv (FIEMAP_FLAG_XATTR)
1142 const_iv (FIEMAP_FLAGS_COMPAT)
1143 const_iv (FIEMAP_EXTENT_LAST)
1144 const_iv (FIEMAP_EXTENT_UNKNOWN)
1145 const_iv (FIEMAP_EXTENT_DELALLOC)
1146 const_iv (FIEMAP_EXTENT_ENCODED)
1147 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1148 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1149 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1150 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1151 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1152 const_iv (FIEMAP_EXTENT_MERGED)
1153 const_iv (FIEMAP_EXTENT_SHARED)
1154
1155 const_iv (SPLICE_F_MOVE)
1156 const_iv (SPLICE_F_NONBLOCK)
1157 const_iv (SPLICE_F_MORE)
1158 const_iv (SPLICE_F_GIFT)
1159
1160 /* these are libeio constants, and are independent of gendef0 */
1161 const_eio (SEEK_SET)
1162 const_eio (SEEK_CUR)
1163 const_eio (SEEK_END)
1164
1165 const_eio (MCL_FUTURE)
1166 const_eio (MCL_CURRENT)
1167
1168 const_eio (MS_ASYNC)
1169 const_eio (MS_INVALIDATE)
1170 const_eio (MS_SYNC)
1171
1172 const_eio (MT_MODIFY)
1173
1174 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1175 const_eio (SYNC_FILE_RANGE_WRITE)
1176 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1177
1178 const_eio (FALLOC_FL_KEEP_SIZE)
1179 const_eio (FALLOC_FL_PUNCH_HOLE)
1180 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1181 const_eio (FALLOC_FL_ZERO_RANGE)
1182 const_eio (FALLOC_FL_INSERT_RANGE)
1183 const_eio (FALLOC_FL_UNSHARE_RANGE)
1184
1185 const_eio (RENAME_NOREPLACE)
1186 const_eio (RENAME_EXCHANGE)
1187 const_eio (RENAME_WHITEOUT)
1188
1189 const_eio (READDIR_DENTS)
1190 const_eio (READDIR_DIRS_FIRST)
1191 const_eio (READDIR_STAT_ORDER)
1192 const_eio (READDIR_FOUND_UNKNOWN)
1193
1194 const_eio (DT_UNKNOWN)
1195 const_eio (DT_FIFO)
1196 const_eio (DT_CHR)
1197 const_eio (DT_DIR)
1198 const_eio (DT_BLK)
1199 const_eio (DT_REG)
1200 const_eio (DT_LNK)
1201 const_eio (DT_SOCK)
1202 const_eio (DT_WHT)
1203 };
1204
1201 HV *stash = gv_stashpv ("IO::AIO", 1); 1205 aio_stash = gv_stashpv ("IO::AIO" , 1);
1206 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1207 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1208 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1202 1209
1203 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1210 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1204 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1211 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1205 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1209 1212
1210 create_pipe (); 1213 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1211 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1212}
1213 1214
1215 reinit ();
1216}
1217
1214void 1218void
1215min_parallel (int nthreads) 1219reinit ()
1216 PROTOTYPE: $ 1220 PROTOTYPE:
1217 1221
1218void 1222void
1219max_parallel (int nthreads) 1223max_poll_reqs (unsigned int nreqs)
1220 PROTOTYPE: $
1221
1222int
1223max_outstanding (int maxreqs)
1224 PROTOTYPE: $ 1224 PROTOTYPE: $
1225 CODE: 1225 CODE:
1226 RETVAL = max_outstanding; 1226 eio_set_max_poll_reqs (nreqs);
1227
1228void
1229max_poll_time (double nseconds)
1230 PROTOTYPE: $
1231 CODE:
1232 eio_set_max_poll_time (nseconds);
1233
1234void
1235min_parallel (unsigned int nthreads)
1236 PROTOTYPE: $
1237 CODE:
1238 eio_set_min_parallel (nthreads);
1239
1240void
1241max_parallel (unsigned int nthreads)
1242 PROTOTYPE: $
1243 CODE:
1244 eio_set_max_parallel (nthreads);
1245
1246void
1247max_idle (unsigned int nthreads)
1248 PROTOTYPE: $
1249 CODE:
1250 eio_set_max_idle (nthreads);
1251
1252void
1253idle_timeout (unsigned int seconds)
1254 PROTOTYPE: $
1255 CODE:
1256 eio_set_idle_timeout (seconds);
1257
1258void
1259max_outstanding (unsigned int maxreqs)
1260 PROTOTYPE: $
1261 CODE:
1227 max_outstanding = maxreqs; 1262 max_outstanding = maxreqs;
1228 OUTPUT:
1229 RETVAL
1230 1263
1231void 1264void
1232aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1265aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1233 SV * pathname
1234 int flags
1235 int mode
1236 SV * callback
1237 PROTOTYPE: $$$;$
1238 PPCODE: 1266 PPCODE:
1239{ 1267{
1240 dREQ; 1268 dREQ;
1241 1269
1242 req->type = REQ_OPEN; 1270 req->type = EIO_WD_OPEN;
1243 req->data = newSVsv (pathname); 1271 req_set_path1 (req, pathname);
1244 req->dataptr = SvPVbyte_nolen (req->data);
1245 req->fd = flags;
1246 req->mode = mode;
1247 1272
1248 REQ_SEND; 1273 REQ_SEND;
1249} 1274}
1250 1275
1251void 1276void
1277aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1278 PPCODE:
1279{
1280 dREQ;
1281
1282 req->type = EIO_OPEN;
1283 req_set_path1 (req, pathname);
1284 req->int1 = flags;
1285 req->int2 = mode;
1286
1287 REQ_SEND;
1288}
1289
1290void
1252aio_close (fh,callback=&PL_sv_undef) 1291aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1253 SV * fh
1254 SV * callback
1255 PROTOTYPE: $;$
1256 ALIAS: 1292 ALIAS:
1257 aio_close = REQ_CLOSE
1258 aio_fsync = REQ_FSYNC 1293 aio_fsync = EIO_FSYNC
1259 aio_fdatasync = REQ_FDATASYNC 1294 aio_fdatasync = EIO_FDATASYNC
1295 aio_syncfs = EIO_SYNCFS
1260 PPCODE: 1296 PPCODE:
1261{ 1297{
1298 int fd = s_fileno_croak (fh, 0);
1262 dREQ; 1299 dREQ;
1263 1300
1264 req->type = ix; 1301 req->type = ix;
1265 req->fh = newSVsv (fh); 1302 req->sv1 = newSVsv (fh);
1266 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); 1303 req->int1 = fd;
1267 1304
1268 REQ_SEND (req); 1305 REQ_SEND;
1269} 1306}
1270 1307
1271void 1308void
1309aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1310 PPCODE:
1311{
1312 int fd = s_fileno_croak (fh, 0);
1313 dREQ;
1314
1315 req->type = EIO_SYNC_FILE_RANGE;
1316 req->sv1 = newSVsv (fh);
1317 req->int1 = fd;
1318 req->offs = offset;
1319 req->size = nbytes;
1320 req->int2 = flags;
1321
1322 REQ_SEND;
1323}
1324
1325void
1326aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1327 PPCODE:
1328{
1329 int fd = s_fileno_croak (fh, 0);
1330 dREQ;
1331
1332 req->type = EIO_FALLOCATE;
1333 req->sv1 = newSVsv (fh);
1334 req->int1 = fd;
1335 req->int2 = mode;
1336 req->offs = offset;
1337 req->size = len;
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_close (SV *fh, SV *callback = &PL_sv_undef)
1344 PPCODE:
1345{
1346 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1347 int fd = s_fileno_croak (fh, 0);
1348 dREQ;
1349
1350 if (expect_false (close_fd < 0))
1351 {
1352 int pipefd [2];
1353
1354 if (
1355#ifdef _WIN32
1356 _pipe (pipefd, 1, _O_BINARY) < 0
1357#else
1358 pipe (pipefd) < 0
1359 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1360#endif
1361 || close (pipefd [1]) < 0
1362 )
1363 abort (); /*D*/
1364
1365 close_fd = pipefd [0];
1366 }
1367
1368 req->type = EIO_DUP2;
1369 req->int1 = close_fd;
1370 req->sv2 = newSVsv (fh);
1371 req->int2 = fd;
1372
1373 REQ_SEND;
1374}
1375
1376void
1377aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1378 PPCODE:
1379{
1380 int fd = s_fileno_croak (fh, 0);
1381 dREQ;
1382
1383 req->type = EIO_SEEK;
1384 req->sv1 = newSVsv (fh);
1385 req->int1 = fd;
1386 req->offs = SvVAL64 (offset);
1387 req->int2 = whence;
1388
1389 REQ_SEND;
1390}
1391
1392void
1272aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1393aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1273 SV * fh
1274 UV offset
1275 UV length
1276 SV * data
1277 UV dataoffset
1278 SV * callback
1279 ALIAS: 1394 ALIAS:
1280 aio_read = REQ_READ 1395 aio_read = EIO_READ
1281 aio_write = REQ_WRITE 1396 aio_write = EIO_WRITE
1282 PROTOTYPE: $$$$$;$
1283 PPCODE: 1397 PPCODE:
1284{ 1398{
1285 aio_req req;
1286 STRLEN svlen; 1399 STRLEN svlen;
1400 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1287 char *svptr = SvPVbyte (data, svlen); 1401 char *svptr = SvPVbyte (data, svlen);
1288 1402 UV len = SvUV (length);
1289 SvUPGRADE (data, SVt_PV);
1290 SvPOK_on (data);
1291 1403
1292 if (dataoffset < 0) 1404 if (dataoffset < 0)
1293 dataoffset += svlen; 1405 dataoffset += svlen;
1294 1406
1295 if (dataoffset < 0 || dataoffset > svlen) 1407 if (dataoffset < 0 || dataoffset > svlen)
1296 croak ("data offset outside of string"); 1408 croak ("dataoffset outside of data scalar");
1297 1409
1298 if (ix == REQ_WRITE) 1410 if (ix == EIO_WRITE)
1299 { 1411 {
1300 /* write: check length and adjust. */ 1412 /* write: check length and adjust. */
1301 if (length < 0 || length + dataoffset > svlen) 1413 if (!SvOK (length) || len + dataoffset > svlen)
1302 length = svlen - dataoffset; 1414 len = svlen - dataoffset;
1303 } 1415 }
1304 else 1416 else
1305 { 1417 {
1306 /* read: grow scalar as necessary */ 1418 /* read: check type and grow scalar as necessary */
1419 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1307 svptr = SvGROW (data, length + dataoffset); 1420 svptr = sv_grow (data, len + dataoffset);
1421 else if (SvCUR (data) < len + dataoffset)
1422 croak ("length + dataoffset outside of scalar, and cannot grow");
1308 } 1423 }
1309
1310 if (length < 0)
1311 croak ("length must not be negative");
1312 1424
1313 { 1425 {
1314 dREQ; 1426 dREQ;
1315 1427
1316 req->type = ix; 1428 req->type = ix;
1317 req->fh = newSVsv (fh); 1429 req->sv1 = newSVsv (fh);
1318 req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1430 req->int1 = fd;
1319 : IoOFP (sv_2io (fh))); 1431 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320 req->offset = offset; 1432 req->size = len;
1321 req->length = length;
1322 req->data = SvREFCNT_inc (data); 1433 req->sv2 = SvREFCNT_inc (data);
1323 req->dataptr = (char *)svptr + dataoffset; 1434 req->ptr2 = (char *)svptr + dataoffset;
1435 req->stroffset = dataoffset;
1324 1436
1325 if (!SvREADONLY (data)) 1437 if (!SvREADONLY (data))
1326 { 1438 {
1327 SvREADONLY_on (data); 1439 SvREADONLY_on (data);
1328 req->data2ptr = (void *)data; 1440 req->flags |= FLAG_SV2_RO_OFF;
1329 } 1441 }
1330 1442
1331 REQ_SEND; 1443 REQ_SEND;
1332 } 1444 }
1333} 1445}
1334 1446
1335void 1447void
1336aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1448aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1337 SV * out_fh 1449 ALIAS:
1338 SV * in_fh 1450 aio_ioctl = EIO_IOCTL
1339 UV in_offset 1451 aio_fcntl = EIO_FCNTL
1340 UV length
1341 SV * callback
1342 PROTOTYPE: $$$$;$
1343 PPCODE: 1452 PPCODE:
1344{ 1453{
1345 dREQ; 1454 int fd = s_fileno_croak (fh, 0);
1455 char *svptr;
1346 1456
1347 req->type = REQ_SENDFILE; 1457 if (SvPOK (arg) || !SvNIOK (arg))
1348 req->fh = newSVsv (out_fh);
1349 req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1350 req->fh2 = newSVsv (in_fh);
1351 req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1352 req->offset = in_offset;
1353 req->length = length;
1354
1355 REQ_SEND;
1356}
1357
1358void
1359aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1360 SV * fh
1361 UV offset
1362 IV length
1363 SV * callback
1364 PROTOTYPE: $$$;$
1365 PPCODE:
1366{
1367 dREQ;
1368
1369 req->type = REQ_READAHEAD;
1370 req->fh = newSVsv (fh);
1371 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1372 req->offset = offset;
1373 req->length = length;
1374
1375 REQ_SEND;
1376}
1377
1378void
1379aio_stat (fh_or_path,callback=&PL_sv_undef)
1380 SV * fh_or_path
1381 SV * callback
1382 ALIAS:
1383 aio_stat = REQ_STAT
1384 aio_lstat = REQ_LSTAT
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 New (0, req->statdata, 1, Stat_t);
1390 if (!req->statdata)
1391 { 1458 {
1392 req_free (req); 1459 STRLEN svlen;
1393 croak ("out of memory during aio_req->statdata allocation"); 1460 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1394 } 1461#ifdef IOCPARM_LEN
1462 STRLEN need = IOCPARM_LEN (request);
1463#else
1464 STRLEN need = 256;
1465#endif
1395 1466
1396 if (SvPOK (fh_or_path)) 1467 if (svlen < need)
1397 { 1468 svptr = SvGROW (arg, need);
1398 req->type = ix;
1399 req->data = newSVsv (fh_or_path);
1400 req->dataptr = SvPVbyte_nolen (req->data);
1401 } 1469 }
1402 else 1470 else
1471 svptr = (char *)SvIV (arg);
1472
1403 { 1473 {
1474 dREQ;
1475
1404 req->type = REQ_FSTAT; 1476 req->type = ix;
1405 req->fh = newSVsv (fh_or_path); 1477 req->sv1 = newSVsv (fh);
1406 req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1478 req->int1 = fd;
1479 req->int2 = (long)request;
1480 req->sv2 = SvREFCNT_inc (arg);
1481 req->ptr2 = svptr;
1482
1483 REQ_SEND;
1407 } 1484 }
1485}
1486
1487void
1488aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1489 ALIAS:
1490 aio_readlink = EIO_READLINK
1491 aio_realpath = EIO_REALPATH
1492 PPCODE:
1493{
1494 dREQ;
1495
1496 req->type = ix;
1497 req_set_path1 (req, pathname);
1408 1498
1409 REQ_SEND; 1499 REQ_SEND;
1410} 1500}
1411 1501
1412void 1502void
1413aio_unlink (pathname,callback=&PL_sv_undef) 1503aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1414 SV * pathname 1504 PPCODE:
1415 SV * callback 1505{
1506 int ifd = s_fileno_croak (in_fh , 0);
1507 int ofd = s_fileno_croak (out_fh, 1);
1508 dREQ;
1509
1510 req->type = EIO_SENDFILE;
1511 req->sv1 = newSVsv (out_fh);
1512 req->int1 = ofd;
1513 req->sv2 = newSVsv (in_fh);
1514 req->int2 = ifd;
1515 req->offs = in_offset;
1516 req->size = length;
1517
1518 REQ_SEND;
1519}
1520
1521void
1522aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1523 PPCODE:
1524{
1525 int fd = s_fileno_croak (fh, 0);
1526 dREQ;
1527
1528 req->type = EIO_READAHEAD;
1529 req->sv1 = newSVsv (fh);
1530 req->int1 = fd;
1531 req->offs = offset;
1532 req->size = length;
1533
1534 REQ_SEND;
1535}
1536
1537void
1538aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1416 ALIAS: 1539 ALIAS:
1540 aio_stat = EIO_STAT
1541 aio_lstat = EIO_LSTAT
1542 aio_statvfs = EIO_STATVFS
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1548
1549 REQ_SEND;
1550}
1551
1552UV
1553major (UV dev)
1554 ALIAS:
1555 minor = 1
1556 CODE:
1557 RETVAL = ix ? minor (dev) : major (dev);
1558 OUTPUT:
1559 RETVAL
1560
1561UV
1562makedev (UV maj, UV min)
1563 CODE:
1564 RETVAL = makedev (maj, min);
1565 OUTPUT:
1566 RETVAL
1567
1568void
1569aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1570 PPCODE:
1571{
1572 dREQ;
1573
1574 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1575 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1576 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1577
1578 REQ_SEND;
1579}
1580
1581void
1582aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1583 PPCODE:
1584{
1585 dREQ;
1586
1587 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1588 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1589
1590 REQ_SEND;
1591}
1592
1593void
1594aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1595 PPCODE:
1596{
1597 dREQ;
1598
1599 req->int2 = mode;
1600 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1601
1602 REQ_SEND;
1603}
1604
1605void
1606aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1607 PPCODE:
1608{
1609 dREQ;
1610
1611 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1612 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1613 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1614
1615 REQ_SEND;
1616}
1617
1618void
1619aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1620 PPCODE:
1621{
1622 dREQ;
1623
1624 req->type = EIO_READDIR;
1625 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1626
1627 if (flags & EIO_READDIR_DENTS)
1628 req->int1 |= EIO_READDIR_CUSTOM2;
1629
1630 req_set_path1 (req, pathname);
1631
1632 REQ_SEND;
1633}
1634
1635void
1636aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1637 PPCODE:
1638{
1639 dREQ;
1640
1641 req->type = EIO_MKDIR;
1642 req->int2 = mode;
1643 req_set_path1 (req, pathname);
1644
1645 REQ_SEND;
1646}
1647
1648void
1649aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1650 ALIAS:
1417 aio_unlink = REQ_UNLINK 1651 aio_unlink = EIO_UNLINK
1418 aio_rmdir = REQ_RMDIR 1652 aio_rmdir = EIO_RMDIR
1419 aio_readdir = REQ_READDIR 1653 aio_readdir = EIO_READDIR
1420 PPCODE: 1654 PPCODE:
1421{ 1655{
1422 dREQ; 1656 dREQ;
1423 1657
1424 req->type = ix; 1658 req->type = ix;
1425 req->data = newSVsv (pathname); 1659 req_set_path1 (req, pathname);
1426 req->dataptr = SvPVbyte_nolen (req->data); 1660
1427
1428 REQ_SEND; 1661 REQ_SEND;
1429} 1662}
1430 1663
1431void 1664void
1432aio_link (oldpath,newpath,callback=&PL_sv_undef) 1665aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1433 SV * oldpath
1434 SV * newpath
1435 SV * callback
1436 ALIAS: 1666 ALIAS:
1437 aio_link = REQ_LINK 1667 aio_link = EIO_LINK
1438 aio_symlink = REQ_SYMLINK 1668 aio_symlink = EIO_SYMLINK
1439 aio_rename = REQ_RENAME 1669 aio_rename = EIO_RENAME
1440 PPCODE: 1670 PPCODE:
1441{ 1671{
1672 eio_wd wd2 = 0;
1442 dREQ; 1673 dREQ;
1443 1674
1444 req->type = ix; 1675 req->type = ix;
1445 req->fh = newSVsv (oldpath); 1676 req_set_path1 (req, oldpath);
1446 req->data2ptr = SvPVbyte_nolen (req->fh); 1677 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1447 req->data = newSVsv (newpath); 1678 req->int3 = (long)wd2;
1448 req->dataptr = SvPVbyte_nolen (req->data);
1449 1679
1450 REQ_SEND; 1680 REQ_SEND;
1451} 1681}
1452 1682
1453void 1683void
1454aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1684aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1455 SV * pathname
1456 SV * callback
1457 UV mode
1458 UV dev
1459 PPCODE: 1685 PPCODE:
1460{ 1686{
1687 eio_wd wd2 = 0;
1461 dREQ; 1688 dREQ;
1462 1689
1463 req->type = REQ_MKNOD; 1690 req->type = EIO_RENAME;
1464 req->data = newSVsv (pathname); 1691 req_set_path1 (req, oldpath);
1465 req->dataptr = SvPVbyte_nolen (req->data); 1692 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1466 req->mode = (mode_t)mode; 1693 req->int2 = flags;
1467 req->offset = dev; 1694 req->int3 = (long)wd2;
1468 1695
1469 REQ_SEND; 1696 REQ_SEND;
1470} 1697}
1471 1698
1472void 1699void
1473aio_busy (delay,callback=&PL_sv_undef) 1700aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1474 double delay
1475 SV * callback
1476 PPCODE: 1701 PPCODE:
1477{ 1702{
1478 dREQ; 1703 dREQ;
1479 1704
1480 req->type = REQ_BUSY; 1705 req->type = EIO_MKNOD;
1481 req->fd = delay < 0. ? 0 : delay; 1706 req->int2 = (mode_t)mode;
1482 req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); 1707 req->offs = dev;
1483 1708 req_set_path1 (req, pathname);
1709
1484 REQ_SEND; 1710 REQ_SEND;
1485} 1711}
1486 1712
1487void 1713void
1488aio_group (callback=&PL_sv_undef) 1714aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1489 SV * callback 1715 ALIAS:
1490 PROTOTYPE: ;$ 1716 aio_mtouch = EIO_MTOUCH
1717 aio_msync = EIO_MSYNC
1491 PPCODE: 1718 PPCODE:
1492{ 1719{
1720 STRLEN svlen;
1721 char *svptr = SvPVbyte (data, svlen);
1722 UV len = SvUV (length);
1723
1724 if (flags < 0)
1725 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1726
1727 if (offset < 0)
1728 offset += svlen;
1729
1730 if (offset < 0 || offset > svlen)
1731 croak ("offset outside of scalar");
1732
1733 if (!SvOK (length) || len + offset > svlen)
1734 len = svlen - offset;
1735
1736 {
1737 dREQ;
1738
1739 req->type = ix;
1740 req->sv2 = SvREFCNT_inc (data);
1741 req->ptr2 = (char *)svptr + offset;
1742 req->size = len;
1743 req->int1 = flags;
1744
1745 REQ_SEND;
1746 }
1747}
1748
1749void
1750aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1751 PPCODE:
1752{
1753 STRLEN svlen;
1754 char *svptr = SvPVbyte (data, svlen);
1755 UV len = SvUV (length);
1756
1757 if (offset < 0)
1758 offset += svlen;
1759
1760 if (offset < 0 || offset > svlen)
1761 croak ("offset outside of scalar");
1762
1763 if (!SvOK (length) || len + offset > svlen)
1764 len = svlen - offset;
1765
1766 {
1767 dREQ;
1768
1769 req->type = EIO_MLOCK;
1770 req->sv2 = SvREFCNT_inc (data);
1771 req->ptr2 = (char *)svptr + offset;
1772 req->size = len;
1773
1774 REQ_SEND;
1775 }
1776}
1777
1778void
1779aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1780 PPCODE:
1781{
1782 dREQ;
1783
1784 req->type = EIO_MLOCKALL;
1785 req->int1 = flags;
1786
1787 REQ_SEND;
1788}
1789
1790void
1791aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1792 PPCODE:
1793{
1794 int fd = s_fileno_croak (fh, 0);
1493 dREQ; 1795 dREQ;
1494 1796
1495 req->type = REQ_GROUP; 1797 req->type = EIO_CUSTOM;
1496 req_send (req); 1798 req->sv1 = newSVsv (fh);
1799 req->int1 = fd;
1497 1800
1498 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1801 req->feed = fiemap;
1499} 1802#if HAVE_FIEMAP
1803 /* keep our fingers crossed that the next two types are 64 bit */
1804 req->offs = start;
1805 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1806 req->int2 = flags;
1807 req->int3 = SvOK (count) ? SvIV (count) : -1;
1808#endif
1500 1809
1810 REQ_SEND;
1811}
1812
1501void 1813void
1502aio_nop (callback=&PL_sv_undef) 1814aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1503 SV * callback 1815 PPCODE:
1816{
1817 char *svptr = 0;
1818
1819 sv_clear_foreign (data);
1820
1821 if (length) /* known length, directly read into scalar */
1822 {
1823 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1824 svptr = sv_grow (data, length);
1825 else if (SvCUR (data) < length)
1826 croak ("length outside of scalar, and cannot grow");
1827 else
1828 svptr = SvPVbyte_nolen (data);
1829 }
1830
1831 {
1832 dREQ;
1833
1834 req->type = EIO_SLURP;
1835 req_set_path1 (req, pathname);
1836 req->offs = offset;
1837 req->size = length;
1838 req->sv2 = SvREFCNT_inc (data);
1839 req->ptr2 = svptr;
1840
1841 if (!SvREADONLY (data))
1842 {
1843 SvREADONLY_on (data);
1844 req->flags |= FLAG_SV2_RO_OFF;
1845 }
1846
1847 REQ_SEND;
1848 }
1849}
1850
1851void
1852aio_busy (double delay, SV *callback = &PL_sv_undef)
1504 PPCODE: 1853 PPCODE:
1505{ 1854{
1506 dREQ; 1855 dREQ;
1507 1856
1508 req->type = REQ_NOP; 1857 req->type = EIO_BUSY;
1858 req->nv1 = delay < 0. ? 0. : delay;
1509 1859
1510 REQ_SEND; 1860 REQ_SEND;
1511} 1861}
1512 1862
1863void
1864aio_group (SV *callback = &PL_sv_undef)
1865 PPCODE:
1866{
1867 dREQ;
1868
1869 req->type = EIO_GROUP;
1870
1871 PUTBACK;
1872 req_submit (req);
1873 SPAGAIN;
1874
1875 XPUSHs (req_sv (req, aio_grp_stash));
1876}
1877
1878void
1879aio_nop (SV *callback = &PL_sv_undef)
1880 ALIAS:
1881 aio_nop = EIO_NOP
1882 aio_sync = EIO_SYNC
1883 PPCODE:
1884{
1885 dREQ;
1886
1887 req->type = ix;
1888
1889 REQ_SEND;
1890}
1891
1513int 1892int
1514aioreq_pri (int pri = 0) 1893aioreq_pri (int pri = NO_INIT)
1515 PROTOTYPE: ;$
1516 CODE: 1894 CODE:
1517 RETVAL = next_pri - PRI_BIAS; 1895 RETVAL = next_pri;
1518 if (items > 0) 1896 if (items > 0)
1519 { 1897 {
1520 if (pri < PRI_MIN) pri = PRI_MIN; 1898 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521 if (pri > PRI_MAX) pri = PRI_MAX; 1899 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522 next_pri = pri + PRI_BIAS; 1900 next_pri = pri;
1523 } 1901 }
1524 OUTPUT: 1902 OUTPUT:
1525 RETVAL 1903 RETVAL
1526 1904
1527void 1905void
1528aioreq_nice (int nice = 0) 1906aioreq_nice (int nice = 0)
1529 CODE: 1907 CODE:
1530 nice = next_pri - nice; 1908 nice = next_pri - nice;
1531 if (nice < PRI_MIN) nice = PRI_MIN; 1909 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532 if (nice > PRI_MAX) nice = PRI_MAX; 1910 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533 next_pri = nice + PRI_BIAS; 1911 next_pri = nice;
1534 1912
1535void 1913void
1536flush () 1914flush ()
1915 CODE:
1916 while (eio_nreqs ())
1917 {
1918 poll_wait ();
1919 poll_cb ();
1920 }
1921
1922int
1923poll ()
1924 CODE:
1925 poll_wait ();
1926 RETVAL = poll_cb ();
1927 OUTPUT:
1928 RETVAL
1929
1930int
1931poll_fileno ()
1932 CODE:
1933 RETVAL = s_epipe_fd (&respipe);
1934 OUTPUT:
1935 RETVAL
1936
1937int
1938poll_cb (...)
1537 PROTOTYPE: 1939 PROTOTYPE:
1538 CODE: 1940 CODE:
1539 while (nreqs)
1540 {
1541 poll_wait ();
1542 poll_cb (0); 1941 RETVAL = poll_cb ();
1543 }
1544
1545void
1546poll()
1547 PROTOTYPE:
1548 CODE:
1549 if (nreqs)
1550 {
1551 poll_wait ();
1552 poll_cb (0);
1553 }
1554
1555int
1556poll_fileno()
1557 PROTOTYPE:
1558 CODE:
1559 RETVAL = respipe [0];
1560 OUTPUT: 1942 OUTPUT:
1561 RETVAL 1943 RETVAL
1562 1944
1945void
1946poll_wait ()
1947 CODE:
1948 poll_wait ();
1949
1563int 1950int
1564poll_cb(...) 1951nreqs ()
1565 PROTOTYPE:
1566 CODE: 1952 CODE:
1567 RETVAL = poll_cb (0); 1953 RETVAL = eio_nreqs ();
1568 OUTPUT: 1954 OUTPUT:
1569 RETVAL 1955 RETVAL
1570 1956
1571int 1957int
1572poll_some(int max = 0) 1958nready ()
1573 PROTOTYPE: $
1574 CODE: 1959 CODE:
1575 RETVAL = poll_cb (max); 1960 RETVAL = eio_nready ();
1576 OUTPUT: 1961 OUTPUT:
1577 RETVAL 1962 RETVAL
1578 1963
1579void 1964int
1580poll_wait() 1965npending ()
1581 PROTOTYPE:
1582 CODE: 1966 CODE:
1583 if (nreqs) 1967 RETVAL = eio_npending ();
1584 poll_wait ();
1585
1586int
1587nreqs()
1588 PROTOTYPE:
1589 CODE:
1590 RETVAL = nreqs;
1591 OUTPUT: 1968 OUTPUT:
1592 RETVAL 1969 RETVAL
1593 1970
1594int 1971int
1595nready() 1972nthreads ()
1596 PROTOTYPE:
1597 CODE: 1973 CODE:
1598 RETVAL = get_nready (); 1974 RETVAL = eio_nthreads ();
1599 OUTPUT: 1975 OUTPUT:
1600 RETVAL 1976 RETVAL
1601 1977
1602int 1978int
1603npending() 1979fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1604 PROTOTYPE: 1980 CODE:
1981 RETVAL = posix_fadvise (fh, offset, length, advice);
1982 OUTPUT:
1983 RETVAL
1984
1985IV
1986sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1987 CODE:
1988 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1989 OUTPUT:
1990 RETVAL
1991
1992void
1993mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1994 PPCODE:
1995 sv_clear_foreign (scalar);
1996{
1997 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1998 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1999 if (addr == (void *)-1)
2000 XSRETURN_NO;
2001
2002 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2003
2004 if (!(prot & PROT_WRITE))
2005 SvREADONLY_on (scalar);
2006
2007 XSRETURN_YES;
2008}
2009
2010void
2011munmap (SV *scalar)
1605 CODE: 2012 CODE:
1606 RETVAL = get_npending (); 2013 sv_clear_foreign (scalar);
2014
2015int
2016madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2017 ALIAS:
2018 mprotect = 1
2019 CODE:
2020{
2021 STRLEN svlen;
2022 void *addr = SvPVbyte (scalar, svlen);
2023 STRLEN len = SvUV (length);
2024
2025 if (offset < 0)
2026 offset += svlen;
2027
2028 if (offset < 0 || offset > svlen)
2029 croak ("offset outside of scalar");
2030
2031 if (!SvOK (length) || len + offset > svlen)
2032 len = svlen - offset;
2033
2034 addr = (void *)(((intptr_t)addr) + offset);
2035 eio_page_align (&addr, &len);
2036
2037 switch (ix)
2038 {
2039 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2040 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2041 }
2042}
1607 OUTPUT: 2043 OUTPUT:
1608 RETVAL 2044 RETVAL
2045
2046int
2047munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
2048 CODE:
2049{
2050 STRLEN svlen;
2051 void *addr = SvPVbyte (scalar, svlen);
2052 size_t len = SvUV (length);
2053
2054 if (offset < 0)
2055 offset += svlen;
2056
2057 if (offset < 0 || offset > svlen)
2058 croak ("offset outside of scalar");
2059
2060 if (!SvOK (length) || len + offset > svlen)
2061 len = svlen - offset;
2062
2063 addr = (void *)(((intptr_t)addr) + offset);
2064 eio_page_align (&addr, &len);
2065#if _POSIX_MEMLOCK_RANGE
2066 RETVAL = munlock (addr, len);
2067#else
2068 RETVAL = EIO_ENOSYS ();
2069#endif
2070}
2071 OUTPUT:
2072 RETVAL
2073
2074int
2075munlockall ()
2076 CODE:
2077#if _POSIX_MEMLOCK
2078 munlockall ();
2079#else
2080 RETVAL = EIO_ENOSYS ();
2081#endif
2082 OUTPUT:
2083 RETVAL
2084
2085int
2086splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2087 CODE:
2088{
2089#if HAVE_LINUX_SPLICE
2090 loff_t off_in_, off_out_;
2091 RETVAL = splice (
2092 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2093 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2094 length, flags
2095 );
2096#else
2097 RETVAL = EIO_ENOSYS ();
2098#endif
2099}
2100 OUTPUT:
2101 RETVAL
2102
2103int
2104tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2105 CODE:
2106#if HAVE_LINUX_SPLICE
2107 RETVAL = tee (rfh, wfh, length, flags);
2108#else
2109 RETVAL = EIO_ENOSYS ();
2110#endif
2111 OUTPUT:
2112 RETVAL
2113
2114int
2115pipesize (aio_rfd rfh, int new_size = -1)
2116 PROTOTYPE: $;$
2117 CODE:
2118#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2119 if (new_size >= 0)
2120 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2121 else
2122 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2123#else
2124 errno = ENOSYS;
2125 RETVAL = -1;
2126#endif
2127 OUTPUT:
2128 RETVAL
2129
2130void
2131pipe2 (int flags = 0)
2132 PROTOTYPE: ;$
2133 PPCODE:
2134{
2135 int fd[2];
2136 int res;
2137
2138 if (flags)
2139#if HAVE_PIPE2
2140 res = pipe2 (fd, flags);
2141#else
2142 res = (errno = ENOSYS, -1);
2143#endif
2144 else
2145 res = pipe (fd);
2146
2147 if (!res)
2148 {
2149 EXTEND (SP, 2);
2150 PUSHs (newmortalFH (fd[0], O_RDONLY));
2151 PUSHs (newmortalFH (fd[1], O_WRONLY));
2152 }
2153}
2154
2155UV
2156get_fdlimit ()
2157 CODE:
2158#if HAVE_RLIMITS
2159 struct rlimit rl;
2160 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2161 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2162#endif
2163 XSRETURN_UNDEF;
2164 OUTPUT:
2165 RETVAL
2166
2167void
2168min_fdlimit (UV limit = 0x7fffffffU)
2169 CODE:
2170{
2171#if HAVE_RLIMITS
2172 struct rlimit rl;
2173 rlim_t orig_rlim_max;
2174 UV bit;
2175
2176 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2177 goto fail;
2178
2179 if (rl.rlim_cur == RLIM_INFINITY)
2180 XSRETURN_YES;
2181
2182 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2183
2184 if (rl.rlim_cur < limit)
2185 {
2186 rl.rlim_cur = limit;
2187
2188 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2189 rl.rlim_max = rl.rlim_cur;
2190 }
2191
2192 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2193 XSRETURN_YES;
2194
2195 if (errno == EPERM)
2196 {
2197 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2198 /* our limit overflows a system-wide limit */
2199 /* try an adaptive algorithm, but do not lower the hardlimit */
2200 rl.rlim_max = 0;
2201 for (bit = 0x40000000U; bit; bit >>= 1)
2202 {
2203 rl.rlim_max |= bit;
2204 rl.rlim_cur = rl.rlim_max;
2205
2206 /* nevr decrease the hard limit */
2207 if (rl.rlim_max < orig_rlim_max)
2208 break;
2209
2210 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2211 rl.rlim_max &= ~bit; /* too high, remove bit again */
2212 }
2213
2214 /* now, raise the soft limit to the max permitted */
2215 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2216 {
2217 rl.rlim_cur = rl.rlim_max;
2218 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2219 errno = EPERM;
2220 }
2221 }
2222#endif
2223 fail:
2224 XSRETURN_UNDEF;
2225}
2226
2227void _on_next_submit (SV *cb)
2228 CODE:
2229 SvREFCNT_dec (on_next_submit);
2230 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1609 2231
1610PROTOTYPES: DISABLE 2232PROTOTYPES: DISABLE
2233
2234MODULE = IO::AIO PACKAGE = IO::AIO::WD
2235
2236BOOT:
2237{
2238 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2239 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2240}
2241
2242void
2243DESTROY (SV *self)
2244 CODE:
2245{
2246 aio_wd wd = SvAIO_WD (self);
2247#if HAVE_AT
2248 {
2249 SV *callback = &PL_sv_undef;
2250 dREQ; /* clobbers next_pri :/ */
2251 next_pri = req->pri; /* restore next_pri */
2252 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2253 req->type = EIO_WD_CLOSE;
2254 req->wd = wd;
2255 REQ_SEND;
2256 }
2257#else
2258 eio_wd_close_sync (wd);
2259#endif
2260}
1611 2261
1612MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2262MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613 2263
1614void 2264void
1615cancel (aio_req_ornot req) 2265cancel (aio_req_ornot req)
1616 CODE: 2266 CODE:
1617 req_cancel (req); 2267 eio_cancel (req);
1618 2268
1619void 2269void
1620cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2270cb (aio_req_ornot req, SV *callback = NO_INIT)
1621 CODE: 2271 PPCODE:
2272{
2273 if (GIMME_V != G_VOID)
2274 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2275
2276 if (items > 1)
2277 {
2278 SV *cb_cv = get_cb (callback);
2279
1622 SvREFCNT_dec (req->callback); 2280 SvREFCNT_dec (req->callback);
1623 req->callback = newSVsv (callback); 2281 req->callback = SvREFCNT_inc (cb_cv);
2282 }
2283}
1624 2284
1625MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2285MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1626 2286
1627void 2287void
1628add (aio_req grp, ...) 2288add (aio_req grp, ...)
1629 PPCODE: 2289 PPCODE:
1630{ 2290{
1631 int i; 2291 int i;
1632 aio_req req;
1633 2292
1634 if (grp->fd == 2) 2293 if (grp->int1 == 2)
1635 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2294 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1636 2295
1637 for (i = 1; i < items; ++i ) 2296 for (i = 1; i < items; ++i )
1638 { 2297 {
2298 aio_req req;
2299
1639 if (GIMME_V != G_VOID) 2300 if (GIMME_V != G_VOID)
1640 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2301 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641 2302
1642 req = SvAIO_REQ (ST (i)); 2303 req = SvAIO_REQ (ST (i));
1643 2304
1644 if (req) 2305 if (req)
1645 { 2306 eio_grp_add (grp, req);
1646 ++grp->length;
1647 req->grp = grp;
1648
1649 req->grp_prev = 0;
1650 req->grp_next = grp->grp_first;
1651
1652 if (grp->grp_first)
1653 grp->grp_first->grp_prev = req;
1654
1655 grp->grp_first = req;
1656 }
1657 } 2307 }
1658} 2308}
1659 2309
1660void 2310void
1661cancel_subs (aio_req_ornot req) 2311cancel_subs (aio_req_ornot req)
… …
1670 AV *av; 2320 AV *av;
1671 2321
1672 grp->errorno = errno; 2322 grp->errorno = errno;
1673 2323
1674 av = newAV (); 2324 av = newAV ();
2325 av_extend (av, items - 1);
1675 2326
1676 for (i = 1; i < items; ++i ) 2327 for (i = 1; i < items; ++i )
1677 av_push (av, newSVsv (ST (i))); 2328 av_push (av, newSVsv (ST (i)));
1678 2329
1679 SvREFCNT_dec (grp->data); 2330 SvREFCNT_dec (grp->sv1);
1680 grp->data = (SV *)av; 2331 grp->sv1 = (SV *)av;
1681} 2332}
1682 2333
1683void 2334void
1684errno (aio_req grp, int errorno = errno) 2335errno (aio_req grp, int errorno = errno)
1685 CODE: 2336 CODE:
1686 grp->errorno = errorno; 2337 grp->errorno = errorno;
1687 2338
1688void 2339void
1689limit (aio_req grp, int limit) 2340limit (aio_req grp, int limit)
1690 CODE: 2341 CODE:
1691 grp->fd2 = limit; 2342 eio_grp_limit (grp, limit);
1692 aio_grp_feed (grp);
1693 2343
1694void 2344void
1695feed (aio_req grp, SV *callback=&PL_sv_undef) 2345feed (aio_req grp, SV *callback = &PL_sv_undef)
1696 CODE: 2346 CODE:
1697{ 2347{
1698 SvREFCNT_dec (grp->fh2); 2348 SvREFCNT_dec (grp->sv2);
1699 grp->fh2 = newSVsv (callback); 2349 grp->sv2 = newSVsv (callback);
2350 grp->feed = aio_grp_feed;
1700 2351
1701 if (grp->fd2 <= 0) 2352 if (grp->int2 <= 0)
1702 grp->fd2 = 2; 2353 grp->int2 = 2;
1703 2354
1704 aio_grp_feed (grp); 2355 eio_grp_limit (grp, grp->int2);
1705} 2356}
1706 2357

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