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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.96 by root, Sat Dec 23 04:49:37 2006 UTC vs.
Revision 1.271 by root, Fri Dec 28 12:43:00 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"
8#include "perliol.h"
16 9
17#include "autoconf/config.h" 10#if !defined mg_findext
18 11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
19#include <pthread.h> 12#endif
20 13
21#include <stddef.h> 14#include <stddef.h>
22#include <stdlib.h> 15#include <stdlib.h>
23#include <errno.h> 16#include <errno.h>
24#include <sys/time.h>
25#include <sys/select.h>
26#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
27#include <sys/stat.h> 19#include <sys/stat.h>
28#include <limits.h> 20#include <limits.h>
29#include <unistd.h>
30#include <fcntl.h> 21#include <fcntl.h>
31#include <signal.h>
32#include <sched.h> 22#include <sched.h>
33 23
34#if HAVE_SENDFILE 24/* the incompetent fool that created musl keeps __linux__, refuses
35# if __linux 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 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
36# include <sys/sendfile.h> 88 #include <sys/select.h>
37# elif __freebsd 89 #include <unistd.h>
90 #include <utime.h>
91 #include <signal.h>
92
93 #define EIO_STRUCT_STAT Stat_t
94
95#endif
96
97/*****************************************************************************/
98
99#if __GNUC__ >= 3
100# define expect(expr,value) __builtin_expect ((expr),(value))
101#else
102# define expect(expr,value) (expr)
103#endif
104
105#define expect_false(expr) expect ((expr) != 0, 0)
106#define expect_true(expr) expect ((expr) != 0, 1)
107
108/*****************************************************************************/
109
110#include "config.h"
111
112#if HAVE_SYS_MKDEV_H
38# include <sys/socket.h> 113# include <sys/mkdev.h>
114#elif HAVE_SYS_SYSMACROS_H
115# include <sys/sysmacros.h>
116#endif
117
118#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
39# include <sys/uio.h> 119# include <sys/mman.h>
40# elif __hpux 120#endif
41# include <sys/socket.h> 121
42# elif __solaris /* not yet */ 122#if HAVE_ST_XTIMENSEC
123# define ATIMENSEC PL_statcache.st_atimensec
124# define MTIMENSEC PL_statcache.st_mtimensec
125# define CTIMENSEC PL_statcache.st_ctimensec
126#elif HAVE_ST_XTIMESPEC
127# define ATIMENSEC PL_statcache.st_atim.tv_nsec
128# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
129# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
130#else
131# define ATIMENSEC 0
132# define MTIMENSEC 0
133# define CTIMENSEC 0
134#endif
135
136#if HAVE_ST_BIRTHTIMENSEC
137# define BTIMESEC PL_statcache.st_birthtime
138# define BTIMENSEC PL_statcache.st_birthtimensec
139#elif HAVE_ST_BIRTHTIMESPEC
140# define BTIMESEC PL_statcache.st_birthtim.tv_sec
141# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
142#else
143# define BTIMESEC 0
144# define BTIMENSEC 0
145#endif
146
147#if HAVE_ST_GEN
148# define ST_GEN PL_statcache.st_gen
149#else
150# define ST_GEN 0
151#endif
152
153#include "schmorp.h"
154
155#if HAVE_EVENTFD
43# include <sys/sendfile.h> 156# include <sys/eventfd.h>
157#endif
158
159#if HAVE_TIMERFD
160# include <sys/timerfd.h>
161#endif
162
163#if HAVE_RLIMITS
164 #include <sys/time.h>
165 #include <sys/resource.h>
166#endif
167
168typedef SV SV8; /* byte-sv, used for argument-checking */
169typedef int aio_rfd; /* read file desriptor */
170typedef int aio_wfd; /* write file descriptor */
171
172static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
173
174#define EIO_REQ_MEMBERS \
175 SV *callback; \
176 SV *sv1, *sv2; \
177 SV *sv3, *sv4; \
178 STRLEN stroffset; \
179 SV *self;
180
181#define EIO_NO_WRAPPERS 1
182
183#include "libeio/eio.h"
184
185static int req_invoke (eio_req *req);
186#define EIO_FINISH(req) req_invoke (req)
187static void req_destroy (eio_req *grp);
188#define EIO_DESTROY(req) req_destroy (req)
189
190#include "libeio/eio.c"
191
192#if !HAVE_POSIX_FADVISE
193# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
194#endif
195
196#if !HAVE_POSIX_MADVISE
197# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
198#endif
199
200#ifndef MAP_ANONYMOUS
201# ifdef MAP_ANON
202# define MAP_ANONYMOUS MAP_ANON
44# else 203# else
45# error sendfile support requested but not available 204# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46# endif 205# endif
47#endif 206#endif
48 207
49/* number of seconds after which idle threads exit */ 208#ifndef makedev
50#define IDLE_TIMEOUT 10 209# define makedev(maj,min) (((maj) << 8) | (min))
51
52/* used for struct dirent, AIX doesn't provide it */
53#ifndef NAME_MAX
54# define NAME_MAX 4096
55#endif
56
57#ifndef PTHREAD_STACK_MIN
58/* care for broken platforms, e.g. windows */
59# define PTHREAD_STACK_MIN 16384
60#endif
61
62#if __ia64
63# define STACKSIZE 65536
64#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65# define STACKSIZE PTHREAD_STACK_MIN
66#else
67# define STACKSIZE 16384
68#endif
69
70/* wether word reads are potentially non-atomic.
71 * this is conservatice, likely most arches this runs
72 * on have atomic word read/writes.
73 */
74#ifndef WORDACCESS_UNSAFE
75# if __i386 || __x86_64
76# define WORDACCESS_UNSAFE 0
77# else
78# define WORDACCESS_UNSAFE 1
79# endif 210#endif
211#ifndef major
212# define major(dev) ((dev) >> 8)
80#endif 213#endif
214#ifndef minor
215# define minor(dev) ((dev) & 0xff)
216#endif
81 217
82/* buffer size for various temporary buffers */ 218/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
83#define AIO_BUFSIZE 65536 219#ifdef __sun
220# undef PAGESIZE
221#endif
84 222
85#define dBUF \ 223#if PAGESIZE <= 0
86 char *aio_buf; \ 224# define PAGESIZE sysconf (_SC_PAGESIZE)
87 LOCK (wrklock); \ 225#endif
88 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 226
89 UNLOCK (wrklock); \ 227/*****************************************************************************/
90 if (!aio_buf) \ 228
229#if !_POSIX_MAPPED_FILES
230# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
231# define munmap(addr,length) EIO_ENOSYS ()
232#endif
233
234#if !_POSIX_MEMORY_PROTECTION
235# define mprotect(addr,len,prot) EIO_ENOSYS ()
236#endif
237
238#if !MREMAP_MAYMOVE
239# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
240#endif
241
242#define FOREIGN_MAGIC PERL_MAGIC_ext
243
244static int ecb_cold
245mmap_free (pTHX_ SV *sv, MAGIC *mg)
246{
247 int old_errno = errno;
248 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
249 errno = old_errno;
250
251 mg->mg_obj = 0; /* just in case */
252
253 SvREADONLY_off (sv);
254
255 if (SvPVX (sv) != mg->mg_ptr)
256 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
257
258 SvCUR_set (sv, 0);
259 SvPVX (sv) = 0;
260 SvOK_off (sv);
261
91 return -1; 262 return 0;
263}
92 264
93typedef SV SV8; /* byte-sv, used for argument-checking */ 265static MGVTBL mmap_vtbl = {
94 266 0, 0, 0, 0, mmap_free
95enum {
96 REQ_QUIT,
97 REQ_OPEN, REQ_CLOSE,
98 REQ_READ, REQ_WRITE, REQ_READAHEAD,
99 REQ_SENDFILE,
100 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101 REQ_FSYNC, REQ_FDATASYNC,
102 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
103 REQ_MKNOD, REQ_READDIR,
104 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105 REQ_GROUP, REQ_NOP,
106 REQ_BUSY,
107}; 267};
108 268
109#define AIO_REQ_KLASS "IO::AIO::REQ" 269static int ecb_cold
110#define AIO_GRP_KLASS "IO::AIO::GRP" 270sysfree_free (pTHX_ SV *sv, MAGIC *mg)
111
112typedef struct aio_cb
113{ 271{
114 struct aio_cb *volatile next; 272 free (mg->mg_ptr);
273 mg->mg_obj = 0; /* just in case */
115 274
116 SV *callback, *fh; 275 SvREADONLY_off (sv);
117 SV *sv1, *sv2;
118 void *ptr1, *ptr2;
119 off_t offs;
120 size_t size;
121 ssize_t result;
122 276
123 STRLEN stroffset; 277 if (SvPVX (sv) != mg->mg_ptr)
124 int type; 278 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
125 int int1, int2;
126 int errorno;
127 mode_t mode; /* open */
128 279
129 unsigned char flags; 280 SvCUR_set (sv, 0);
130 unsigned char pri; 281 SvPVX (sv) = 0;
282 SvOK_off (sv);
131 283
132 SV *self; /* the perl counterpart of this request, if any */ 284 return 0;
133 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 285}
134} aio_cb;
135 286
136enum { 287static MGVTBL sysfree_vtbl = {
137 FLAG_CANCELLED = 0x01, /* request was cancelled */ 288 0, 0, 0, 0, sysfree_free
138 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140}; 289};
141 290
142typedef aio_cb *aio_req; 291/*****************************************************************************/
143typedef aio_cb *aio_req_ornot;
144 292
145enum { 293/* helper: set scalar to foreign ptr with custom free */
146 PRI_MIN = -4, 294static void
147 PRI_MAX = 4, 295sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
148
149 DEFAULT_PRI = 0,
150 PRI_BIAS = -PRI_MIN,
151 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152};
153
154#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156static unsigned int max_poll_time = 0;
157static unsigned int max_poll_reqs = 0;
158
159/* calculcate time difference in ~1/AIO_TICKS of a second */
160static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161{ 296{
162 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 297 sv_force_normal (sv);
163 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
164}
165 298
166static pthread_t main_tid; 299 /* we store the length in mg_obj, as namlen is I32 :/ */
167static int main_sig; 300 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
168static int block_sig_level; 301 ->mg_obj = (SV *)length;
169 302
170void block_sig () 303 SvUPGRADE (sv, SVt_PV); /* nop... */
171{
172 sigset_t ss;
173 304
174 if (block_sig_level++) 305 if (SvLEN (sv))
306 Safefree (SvPVX (sv));
307
308 SvPVX (sv) = (char *)addr;
309 SvCUR_set (sv, length);
310 SvLEN_set (sv, 0);
311 SvPOK_only (sv);
312}
313
314static void
315sv_clear_foreign (SV *sv)
316{
317 /* todo: iterate over magic and only free ours, but of course */
318 /* the perl5porters will call that (correct) behaviour buggy */
319 sv_unmagic (sv, FOREIGN_MAGIC);
320}
321
322/*****************************************************************************/
323
324/* defines all sorts of constants to 0 unless they are already defined */
325/* also provides const_iv_ and const_niv_ macros for them */
326#include "def0.h"
327
328/*****************************************************************************/
329
330static void
331fiemap (eio_req *req)
332{
333 req->result = -1;
334
335#if HAVE_FIEMAP
336 /* assume some c99 */
337 struct fiemap *fiemap = 0;
338 size_t end_offset;
339 int count = req->int3;
340
341 req->flags |= EIO_FLAG_PTR1_FREE;
342
343 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
344 /* increase in 3.5kb steps */
345 if (count < 0)
346 count = 8;
347
348 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
349 errno = ENOMEM;
350 if (!fiemap)
175 return; 351 return;
176 352
177 if (!main_sig) 353 req->ptr1 = fiemap;
354
355 fiemap->fm_start = req->offs;
356 fiemap->fm_length = req->size;
357 fiemap->fm_flags = req->int2;
358 fiemap->fm_extent_count = count;
359
360 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
178 return; 361 return;
179 362
180 sigemptyset (&ss); 363 if (req->int3 >= 0 /* not autosizing */
181 sigaddset (&ss, main_sig); 364 || !fiemap->fm_mapped_extents /* no more extents */
182 pthread_sigmask (SIG_BLOCK, &ss, 0); 365 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
183} 366 goto done;
184 367
185void unblock_sig () 368 /* else we have to loop -
186{ 369 * it would be tempting (actually I tried that first) to just query the
187 sigset_t ss; 370 * number of extents needed, but linux often feels like not returning all
371 * extents, without telling us it left any out. this complicates
372 * this quite a bit.
373 */
188 374
189 if (--block_sig_level) 375 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
190 return;
191 376
192 if (!main_sig) 377 for (;;)
193 return;
194
195 sigemptyset (&ss);
196 sigaddset (&ss, main_sig);
197 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198}
199
200static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202static unsigned int started, idle, wanted;
203
204#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206#else
207# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208#endif
209
210#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213/* worker threads management */
214static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216typedef struct worker {
217 /* locked by wrklock */
218 struct worker *prev, *next;
219
220 pthread_t tid;
221
222 /* locked by reslock, reqlock or wrklock */
223 aio_req req; /* currently processed request */
224 void *dbuf;
225 DIR *dirp;
226} worker;
227
228static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230static void worker_clear (worker *wrk)
231{
232 if (wrk->dirp)
233 { 378 {
234 closedir (wrk->dirp); 379 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
235 wrk->dirp = 0; 380 char scratch[3072];
236 } 381 struct fiemap *incmap = (struct fiemap *)scratch;
237 382
238 if (wrk->dbuf) 383 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
239 { 384 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
240 free (wrk->dbuf); 385 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
241 wrk->dbuf = 0; 386 incmap->fm_flags = fiemap->fm_flags;
242 } 387 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
243}
244 388
245static void worker_free (worker *wrk) 389 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
246{
247 wrk->next->prev = wrk->prev;
248 wrk->prev->next = wrk->next;
249
250 free (wrk);
251}
252
253static volatile unsigned int nreqs, nready, npending;
254static volatile unsigned int max_idle = 4;
255static volatile unsigned int max_outstanding = 0xffffffff;
256static int respipe [2];
257
258static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262#if WORDACCESS_UNSAFE
263
264static unsigned int get_nready ()
265{
266 unsigned int retval;
267
268 LOCK (reqlock);
269 retval = nready;
270 UNLOCK (reqlock);
271
272 return retval;
273}
274
275static unsigned int get_npending ()
276{
277 unsigned int retval;
278
279 LOCK (reslock);
280 retval = npending;
281 UNLOCK (reslock);
282
283 return retval;
284}
285
286static unsigned int get_nthreads ()
287{
288 unsigned int retval;
289
290 LOCK (wrklock);
291 retval = started;
292 UNLOCK (wrklock);
293
294 return retval;
295}
296
297#else
298
299# define get_nready() nready
300# define get_npending() npending
301# define get_nthreads() started
302
303#endif
304
305/*
306 * a somewhat faster data structure might be nice, but
307 * with 8 priorities this actually needs <20 insns
308 * per shift, the most expensive operation.
309 */
310typedef struct {
311 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312 int size;
313} reqq;
314
315static reqq req_queue;
316static reqq res_queue;
317
318int reqq_push (reqq *q, aio_req req)
319{
320 int pri = req->pri;
321 req->next = 0;
322
323 if (q->qe[pri])
324 {
325 q->qe[pri]->next = req;
326 q->qe[pri] = req;
327 }
328 else
329 q->qe[pri] = q->qs[pri] = req;
330
331 return q->size++;
332}
333
334aio_req reqq_shift (reqq *q)
335{
336 int pri;
337
338 if (!q->size)
339 return 0; 390 return;
340 391
341 --q->size; 392 if (!incmap->fm_mapped_extents)
393 goto done;
342 394
343 for (pri = NUM_PRI; pri--; ) 395 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
344 { 396 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
345 aio_req req = q->qs[pri]; 397 errno = ENOMEM;
346
347 if (req) 398 if (!fiemap)
399 return;
400
401 req->ptr1 = fiemap;
402
403 for (count = 0; count < incmap->fm_mapped_extents; ++count)
348 { 404 {
349 if (!(q->qs[pri] = req->next)) 405 struct fiemap_extent *e = incmap->fm_extents + count;
350 q->qe[pri] = 0;
351 406
352 return req; 407 if (e->fe_logical + e->fe_length >= end_offset)
408 goto done;
409
410 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
411
412 if (e->fe_flags & FIEMAP_EXTENT_LAST)
413 goto done;
414
353 } 415 }
354 } 416 }
355 417
356 abort (); 418done:
357} 419 req->result = 0;
358 420
359static int poll_cb (); 421#else
360static int req_invoke (aio_req req); 422 errno = ENOSYS;
423#endif
424}
425
426/*****************************************************************************/
427
428static int close_fd; /* dummy fd to close fds via dup2 */
429
430enum {
431 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
432};
433
434typedef eio_req *aio_req;
435typedef eio_req *aio_req_ornot;
436typedef eio_wd aio_wd;
437
438static SV *on_next_submit;
439static int next_pri = EIO_PRI_DEFAULT;
440static int max_outstanding;
441
442static s_epipe respipe;
443
361static void req_free (aio_req req); 444static void req_destroy (aio_req req);
362static void req_cancel (aio_req req); 445static void req_cancel (aio_req req);
363 446
447static void
448want_poll (void)
449{
450 /* write a dummy byte to the pipe so fh becomes ready */
451 s_epipe_signal (&respipe);
452}
453
454static void
455done_poll (void)
456{
457 /* read any signals sent by the worker threads */
458 s_epipe_drain (&respipe);
459}
460
364/* must be called at most once */ 461/* must be called at most once */
365static SV *req_sv (aio_req req, const char *klass) 462static SV *
463req_sv (aio_req req, HV *stash)
366{ 464{
367 if (!req->self) 465 if (!req->self)
368 { 466 {
369 req->self = (SV *)newHV (); 467 req->self = (SV *)newHV ();
370 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 468 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371 } 469 }
372 470
373 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 471 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374} 472}
375 473
376static aio_req SvAIO_REQ (SV *sv) 474static SV *
475newSVaio_wd (aio_wd wd)
476{
477 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
478}
479
480static aio_req
481SvAIO_REQ (SV *sv)
377{ 482{
378 MAGIC *mg; 483 MAGIC *mg;
379 484
380 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 485 if (!SvROK (sv)
486 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
487 || (SvSTASH (SvRV (sv)) != aio_grp_stash
488 && SvSTASH (SvRV (sv)) != aio_req_stash
489 && !sv_derived_from (sv, "IO::AIO::REQ")))
381 croak ("object of class " AIO_REQ_KLASS " expected"); 490 croak ("object of class IO::AIO::REQ expected");
382 491
383 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 492 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384 493
385 return mg ? (aio_req)mg->mg_ptr : 0; 494 return mg ? (aio_req)mg->mg_ptr : 0;
386} 495}
387 496
497static aio_wd
498SvAIO_WD (SV *sv)
499{
500 if (!SvROK (sv)
501 || SvTYPE (SvRV (sv)) != SVt_PVMG
502 || SvSTASH (SvRV (sv)) != aio_wd_stash)
503 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
504
505 return (aio_wd)(long)SvIVX (SvRV (sv));
506}
507
508static SV *
509newmortalFH (int fd, int flags)
510{
511 if (fd < 0)
512 return &PL_sv_undef;
513
514 GV *gv = (GV *)sv_newmortal ();
515 char sym[64];
516 int symlen;
517
518 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
519 gv_init (gv, aio_stash, sym, symlen, 0);
520
521 symlen = snprintf (
522 sym,
523 sizeof (sym),
524 "%s&=%d",
525 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
526 fd
527 );
528
529 return do_open (gv, sym, symlen, 0, 0, 0, 0)
530 ? (SV *)gv : &PL_sv_undef;
531}
532
533static void
388static void aio_grp_feed (aio_req grp) 534aio_grp_feed (aio_req grp)
389{ 535{
390 block_sig (); 536 if (grp->sv2 && SvOK (grp->sv2))
391
392 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393 { 537 {
394 int old_len = grp->size;
395
396 if (grp->sv2 && SvOK (grp->sv2))
397 {
398 dSP; 538 dSP;
399 539
400 ENTER; 540 ENTER;
401 SAVETMPS; 541 SAVETMPS;
402 PUSHMARK (SP); 542 PUSHMARK (SP);
403 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 543 XPUSHs (req_sv (grp, aio_grp_stash));
404 PUTBACK; 544 PUTBACK;
405 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 545 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406 SPAGAIN; 546 SPAGAIN;
407 FREETMPS; 547 FREETMPS;
408 LEAVE; 548 LEAVE;
409 }
410
411 /* stop if no progress has been made */
412 if (old_len == grp->size)
413 {
414 SvREFCNT_dec (grp->sv2);
415 grp->sv2 = 0;
416 break;
417 }
418 } 549 }
419
420 unblock_sig ();
421} 550}
422 551
423static void aio_grp_dec (aio_req grp) 552static void
553req_submit (eio_req *req)
424{ 554{
425 --grp->size; 555 eio_submit (req);
426 556
427 /* call feeder, if applicable */ 557 if (expect_false (on_next_submit))
428 aio_grp_feed (grp);
429
430 /* finish, if done */
431 if (!grp->size && grp->int1)
432 { 558 {
433 block_sig (); 559 dSP;
560 SV *cb = sv_2mortal (on_next_submit);
434 561
435 if (!req_invoke (grp)) 562 on_next_submit = 0;
436 {
437 req_free (grp);
438 unblock_sig ();
439 croak (0);
440 }
441 563
442 req_free (grp); 564 PUSHMARK (SP);
443 unblock_sig (); 565 PUTBACK;
566 call_sv (cb, G_DISCARD | G_EVAL);
444 } 567 }
445} 568}
446 569
570static int
447static int req_invoke (aio_req req) 571req_invoke (eio_req *req)
448{ 572{
449 dSP;
450
451 if (req->flags & FLAG_SV1_RO_OFF) 573 if (req->flags & FLAG_SV2_RO_OFF)
452 SvREADONLY_off (req->sv1); 574 SvREADONLY_off (req->sv2);
453 575
454 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 576 if (!EIO_CANCELLED (req) && req->callback)
455 { 577 {
578 dSP;
579 static SV *sv_result_cache; /* caches the result integer SV */
580 SV *sv_result;
581
456 ENTER; 582 ENTER;
457 SAVETMPS; 583 SAVETMPS;
458 PUSHMARK (SP); 584 PUSHMARK (SP);
459 EXTEND (SP, 1); 585 EXTEND (SP, 1);
460 586
587 /* do not recreate the result IV from scratch each time */
588 if (expect_true (sv_result_cache))
589 {
590 sv_result = sv_result_cache; sv_result_cache = 0;
591 SvIV_set (sv_result, req->result);
592 SvIOK_only (sv_result);
593 }
594 else
595 {
596 sv_result = newSViv (req->result);
597 SvREADONLY_on (sv_result);
598 }
599
461 switch (req->type) 600 switch (req->type)
462 { 601 {
602 case EIO_WD_OPEN:
603 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
604 break;
605
463 case REQ_READDIR: 606 case EIO_READDIR:
464 { 607 {
465 SV *rv = &PL_sv_undef; 608 SV *rv = &PL_sv_undef;
466 609
467 if (req->result >= 0) 610 if (req->result >= 0)
468 { 611 {
469 int i; 612 int i;
470 char *buf = req->ptr2; 613 char *names = (char *)req->ptr2;
614 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471 AV *av = newAV (); 615 AV *av = newAV ();
472 616
473 av_extend (av, req->result - 1); 617 av_extend (av, req->result - 1);
474 618
475 for (i = 0; i < req->result; ++i) 619 for (i = 0; i < req->result; ++i)
476 { 620 {
477 SV *sv = newSVpv (buf, 0); 621 if (req->int1 & EIO_READDIR_DENTS)
622 {
623 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478 624
625 if (req->int1 & EIO_READDIR_CUSTOM2)
626 {
627 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
628 AV *avent = newAV ();
629
630 av_extend (avent, 2);
631
632 if (!sv_type [ent->type])
633 {
634 sv_type [ent->type] = newSViv (ent->type);
635 SvREADONLY_on (sv_type [ent->type]);
636 }
637
638 av_store (avent, 0, namesv);
639 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
640 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
641
642 av_store (av, i, newRV_noinc ((SV *)avent));
643 }
644 else
479 av_store (av, i, sv); 645 av_store (av, i, namesv);
646
647 ++ent;
648 }
649 else
650 {
651 SV *name = newSVpv (names, 0);
652 av_store (av, i, name);
480 buf += SvCUR (sv) + 1; 653 names += SvCUR (name) + 1;
654 }
481 } 655 }
482 656
483 rv = sv_2mortal (newRV_noinc ((SV *)av)); 657 rv = sv_2mortal (newRV_noinc ((SV *)av));
484 } 658 }
485 659
486 PUSHs (rv); 660 PUSHs (rv);
661
662 if (req->int1 & EIO_READDIR_CUSTOM1)
663 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487 } 664 }
488 break; 665 break;
489 666
490 case REQ_OPEN: 667 case EIO_OPEN:
668 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
669 break;
670
671 case EIO_STATVFS:
672 case EIO_FSTATVFS:
491 { 673 {
492 /* convert fd to fh */ 674 SV *rv = &PL_sv_undef;
493 SV *fh; 675
676#ifndef _WIN32
677 if (req->result >= 0)
678 {
679 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
680 HV *hv = newHV ();
681 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
682 * chooses to make it a struct.
683 */
684 unsigned long fsid = 0;
685 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
494 686
495 PUSHs (sv_2mortal (newSViv (req->result))); 687 rv = sv_2mortal (newRV_noinc ((SV *)hv));
496 PUTBACK;
497 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
498 SPAGAIN;
499 688
500 fh = POPs; 689 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
501 PUSHMARK (SP); 690 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
691 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
692 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
693 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
694 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
695 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
696 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
697 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
698 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
699 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
700 }
701#endif
702
502 XPUSHs (fh); 703 PUSHs (rv);
503 } 704 }
705
504 break; 706 break;
505 707
506 case REQ_GROUP: 708 case EIO_GROUP:
507 req->int1 = 2; /* mark group as finished */ 709 req->int1 = 2; /* mark group as finished */
508 710
509 if (req->sv1) 711 if (req->sv1)
510 { 712 {
511 int i; 713 int i;
… …
515 for (i = 0; i <= AvFILL (av); ++i) 717 for (i = 0; i <= AvFILL (av); ++i)
516 PUSHs (*av_fetch (av, i, 0)); 718 PUSHs (*av_fetch (av, i, 0));
517 } 719 }
518 break; 720 break;
519 721
520 case REQ_NOP: 722 case EIO_NOP:
521 case REQ_BUSY: 723 case EIO_BUSY:
522 break; 724 break;
523 725
524 case REQ_READLINK: 726 case EIO_READLINK:
727 case EIO_REALPATH:
525 if (req->result > 0) 728 if (req->result > 0)
729 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
730 break;
731
732 case EIO_STAT:
733 case EIO_LSTAT:
734 case EIO_FSTAT:
735 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
736
737 if (!(PL_laststatval = req->result))
738 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
739 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
740
741 PUSHs (sv_result);
742 break;
743
744 case EIO_SEEK:
745 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
746 break;
747
748 case EIO_READ:
749 {
750 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
751 *SvEND (req->sv2) = 0;
752 SvPOK_only (req->sv2);
753 SvSETMAGIC (req->sv2);
754 PUSHs (sv_result);
755 }
756 break;
757
758 case EIO_SLURP:
759 {
760 if (req->result >= 0)
761 {
762 /* if length was originally not known, we steal the malloc'ed memory */
763 if (req->flags & EIO_FLAG_PTR2_FREE)
764 {
765 req->flags &= ~EIO_FLAG_PTR2_FREE;
766 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
767 }
768 else
769 {
770 SvCUR_set (req->sv2, req->result);
771 *SvEND (req->sv2) = 0;
772 SvPOK_only (req->sv2);
773 }
774
775 SvSETMAGIC (req->sv2);
776 }
777
778 PUSHs (sv_result);
779 }
780 break;
781
782 case EIO_CUSTOM:
783 if (req->feed == fiemap)
526 { 784 {
527 SvCUR_set (req->sv1, req->result); 785#if HAVE_FIEMAP
528 *SvEND (req->sv1) = 0;
529 PUSHs (req->sv1); 786 if (!req->result)
787 {
788 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
789
790 if (fiemap->fm_extent_count)
791 {
792 AV *av = newAV ();
793 int i;
794
795 while (fiemap->fm_mapped_extents)
796 {
797 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
798 AV *ext_av = newAV ();
799
800 av_store (ext_av, 3, newSVuv (extent->fe_flags));
801 av_store (ext_av, 2, newSVval64 (extent->fe_length));
802 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
803 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
804
805 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
806 }
807
808 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809 }
810 else
811 {
812 SvIV_set (sv_result, fiemap->fm_mapped_extents);
813 PUSHs (sv_result);
814 }
815 }
816#endif
530 } 817 }
818 else
819 PUSHs (sv_result);
531 break; 820 break;
532 821
533 case REQ_STAT: 822 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
534 case REQ_LSTAT: 823 if (req->result > 0)
535 case REQ_FSTAT: 824 SvIV_set (sv_result, 0);
536 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 825 /* FALLTHROUGH */
537 PL_laststatval = req->result;
538 PL_statcache = *(Stat_t *)(req->ptr2);
539 PUSHs (sv_2mortal (newSViv (req->result)));
540 break;
541
542 case REQ_READ:
543 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
544 *SvEND (req->sv1) = 0;
545 PUSHs (sv_2mortal (newSViv (req->result)));
546 break;
547 826
548 default: 827 default:
549 PUSHs (sv_2mortal (newSViv (req->result))); 828 PUSHs (sv_result);
550 break; 829 break;
551 } 830 }
552 831
553 errno = req->errorno; 832 errno = req->errorno;
554 833
555 PUTBACK; 834 PUTBACK;
556 call_sv (req->callback, G_VOID | G_EVAL); 835 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557 SPAGAIN; 836 SPAGAIN;
837
838 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
839 SvREFCNT_dec (sv_result);
840 else
841 sv_result_cache = sv_result;
558 842
559 FREETMPS; 843 FREETMPS;
560 LEAVE; 844 LEAVE;
845
846 PUTBACK;
561 } 847 }
562 848
563 if (req->grp)
564 {
565 aio_req grp = req->grp;
566
567 /* unlink request */
568 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571 if (grp->grp_first == req)
572 grp->grp_first = req->grp_next;
573
574 aio_grp_dec (grp);
575 }
576
577 return !SvTRUE (ERRSV); 849 return !!SvTRUE (ERRSV);
578} 850}
579 851
580static void req_free (aio_req req) 852static void
853req_destroy (aio_req req)
581{ 854{
582 if (req->self) 855 if (req->self)
583 { 856 {
584 sv_unmagic (req->self, PERL_MAGIC_ext); 857 sv_unmagic (req->self, PERL_MAGIC_ext);
585 SvREFCNT_dec (req->self); 858 SvREFCNT_dec (req->self);
586 } 859 }
587 860
588 SvREFCNT_dec (req->fh);
589 SvREFCNT_dec (req->sv1); 861 SvREFCNT_dec (req->sv1);
590 SvREFCNT_dec (req->sv2); 862 SvREFCNT_dec (req->sv2);
863 SvREFCNT_dec (req->sv3);
864 SvREFCNT_dec (req->sv4);
591 SvREFCNT_dec (req->callback); 865 SvREFCNT_dec (req->callback);
592 866
593 if (req->flags & FLAG_PTR2_FREE)
594 free (req->ptr2);
595
596 Safefree (req); 867 free (req);
597} 868}
598 869
870static void
599static void req_cancel_subs (aio_req grp) 871req_cancel_subs (aio_req grp)
600{ 872{
601 aio_req sub;
602
603 if (grp->type != REQ_GROUP) 873 if (grp->type != EIO_GROUP)
604 return; 874 return;
605 875
606 SvREFCNT_dec (grp->sv2); 876 SvREFCNT_dec (grp->sv2);
607 grp->sv2 = 0; 877 grp->sv2 = 0;
608 878
609 for (sub = grp->grp_first; sub; sub = sub->grp_next) 879 eio_grp_cancel (grp);
610 req_cancel (sub);
611} 880}
612 881
613static void req_cancel (aio_req req) 882static void ecb_cold
883create_respipe (void)
614{ 884{
615 req->flags |= FLAG_CANCELLED; 885 if (s_epipe_renew (&respipe))
616 886 croak ("IO::AIO: unable to initialize result pipe");
617 req_cancel_subs (req);
618} 887}
619 888
620static void *aio_proc(void *arg); 889static void
621 890poll_wait (void)
622static void start_thread (void)
623{ 891{
624 sigset_t fullsigset, oldsigset;
625 pthread_attr_t attr;
626
627 worker *wrk = calloc (1, sizeof (worker));
628
629 if (!wrk)
630 croak ("unable to allocate worker thread data");
631
632 pthread_attr_init (&attr);
633 pthread_attr_setstacksize (&attr, STACKSIZE);
634 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635#ifdef PTHREAD_SCOPE_PROCESS
636 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637#endif
638
639 sigfillset (&fullsigset);
640
641 LOCK (wrklock);
642 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645 {
646 wrk->prev = &wrk_first;
647 wrk->next = wrk_first.next;
648 wrk_first.next->prev = wrk;
649 wrk_first.next = wrk;
650 ++started;
651 }
652 else
653 free (wrk);
654
655 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656 UNLOCK (wrklock);
657}
658
659static void maybe_start_thread ()
660{
661 if (get_nthreads () >= wanted)
662 return;
663
664 /* todo: maybe use idle here, but might be less exact */
665 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666 return;
667
668 start_thread ();
669}
670
671static void req_send (aio_req req)
672{
673 block_sig ();
674
675 ++nreqs;
676
677 LOCK (reqlock);
678 ++nready;
679 reqq_push (&req_queue, req);
680 pthread_cond_signal (&reqwait);
681 UNLOCK (reqlock);
682
683 unblock_sig ();
684
685 maybe_start_thread ();
686}
687
688static void end_thread (void)
689{
690 aio_req req;
691
692 Newz (0, req, 1, aio_cb);
693
694 req->type = REQ_QUIT;
695 req->pri = PRI_MAX + PRI_BIAS;
696
697 LOCK (reqlock);
698 reqq_push (&req_queue, req);
699 pthread_cond_signal (&reqwait);
700 UNLOCK (reqlock);
701
702 LOCK (wrklock);
703 --started;
704 UNLOCK (wrklock);
705}
706
707static void set_max_idle (int nthreads)
708{
709 if (WORDACCESS_UNSAFE) LOCK (reqlock);
710 max_idle = nthreads <= 0 ? 1 : nthreads;
711 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712}
713
714static void min_parallel (int nthreads)
715{
716 if (wanted < nthreads)
717 wanted = nthreads;
718}
719
720static void max_parallel (int nthreads)
721{
722 if (wanted > nthreads)
723 wanted = nthreads;
724
725 while (started > wanted)
726 end_thread ();
727}
728
729static void poll_wait ()
730{
731 fd_set rfd;
732
733 while (nreqs) 892 while (eio_nreqs ())
734 { 893 {
735 int size; 894 int size;
736 if (WORDACCESS_UNSAFE) LOCK (reslock); 895
896 X_LOCK (EIO_POOL->reslock);
737 size = res_queue.size; 897 size = EIO_POOL->res_queue.size;
738 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 898 X_UNLOCK (EIO_POOL->reslock);
739 899
740 if (size) 900 if (size)
741 return; 901 return;
742 902
743 maybe_start_thread (); 903 etp_maybe_start_thread (EIO_POOL);
744 904
745 FD_ZERO(&rfd); 905 s_epipe_wait (&respipe);
746 FD_SET(respipe [0], &rfd);
747
748 select (respipe [0] + 1, &rfd, 0, 0, 0);
749 } 906 }
750} 907}
751 908
752static int poll_cb () 909static int
910poll_cb (void)
753{ 911{
754 dSP;
755 int count = 0;
756 int maxreqs = max_poll_reqs;
757 int do_croak = 0;
758 struct timeval tv_start, tv_now;
759 aio_req req;
760
761 if (max_poll_time)
762 gettimeofday (&tv_start, 0);
763
764 block_sig ();
765
766 for (;;) 912 for (;;)
767 { 913 {
768 for (;;) 914 int res = eio_poll ();
915
916 if (res > 0)
917 croak (0);
918
919 if (!max_outstanding || max_outstanding > eio_nreqs ())
920 return res;
921
922 poll_wait ();
923 }
924}
925
926static void ecb_cold
927reinit (void)
928{
929 create_respipe ();
930
931 if (eio_init (want_poll, done_poll) < 0)
932 croak ("IO::AIO: unable to initialise eio library");
933}
934
935/*****************************************************************************/
936
937static SV *
938get_cb (SV *cb_sv)
939{
940 SvGETMAGIC (cb_sv);
941 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
942}
943
944static aio_req ecb_noinline
945dreq (SV *callback)
946{
947 SV *cb_cv;
948 aio_req req;
949 int req_pri = next_pri;
950 next_pri = EIO_PRI_DEFAULT;
951
952 cb_cv = get_cb (callback);
953
954 req = calloc (sizeof (*req), 1);
955 if (!req)
956 croak ("out of memory during eio_req allocation");
957
958 req->callback = SvREFCNT_inc (cb_cv);
959 req->pri = req_pri;
960
961 return req;
962}
963
964#define dREQ \
965 aio_req req = dreq (callback); \
966
967#define REQ_SEND \
968 PUTBACK; \
969 req_submit (req); \
970 SPAGAIN; \
971 \
972 if (GIMME_V != G_VOID) \
973 XPUSHs (req_sv (req, aio_req_stash));
974
975ecb_inline void
976req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
977{
978 if (expect_false (SvROK (path)))
979 {
980 SV *rv = SvRV (path);
981 SV *wdob;
982
983 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
769 { 984 {
770 maybe_start_thread (); 985 path = AvARRAY (rv)[1];
986 wdob = AvARRAY (rv)[0];
771 987
772 LOCK (reslock); 988 if (SvOK (wdob))
773 req = reqq_shift (&res_queue);
774
775 if (req)
776 { 989 {
777 --npending; 990 *wd = SvAIO_WD (wdob);
778 991 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
779 if (!res_queue.size)
780 {
781 /* read any signals sent by the worker threads */
782 char buf [4];
783 while (read (respipe [0], buf, 4) == 4)
784 ;
785 }
786 }
787
788 UNLOCK (reslock);
789
790 if (!req)
791 break;
792
793 --nreqs;
794
795 if (req->type == REQ_GROUP && req->size)
796 {
797 req->int1 = 1; /* mark request as delayed */
798 continue;
799 } 992 }
800 else 993 else
801 { 994 *wd = EIO_INVALID_WD;
802 if (!req_invoke (req))
803 {
804 req_free (req);
805 unblock_sig ();
806 croak (0);
807 }
808
809 count++;
810 }
811
812 req_free (req);
813
814 if (maxreqs && !--maxreqs)
815 break;
816
817 if (max_poll_time)
818 {
819 gettimeofday (&tv_now, 0);
820
821 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822 break;
823 }
824 } 995 }
996 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
997 {
998 *wd = (aio_wd)(long)SvIVX (rv);
999 *wdsv = SvREFCNT_inc_NN (rv);
1000 *ptr = ".";
1001 return; /* path set to "." */
1002 }
1003 else
1004 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1005 }
825 1006
826 if (nreqs <= max_outstanding) 1007 *pathsv = newSVsv (path);
1008 *ptr = SvPVbyte_nolen (*pathsv);
1009}
1010
1011static void ecb_noinline
1012req_set_path1 (aio_req req, SV *path)
1013{
1014 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1015}
1016
1017static void ecb_noinline
1018req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1019{
1020 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1021
1022 switch (SvTYPE (rv))
1023 {
1024 case SVt_PVIO:
1025 case SVt_PVLV:
1026 case SVt_PVGV:
1027 req->type = type_fh;
1028 req->sv1 = newSVsv (fh_or_path);
1029 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
827 break; 1030 break;
828 1031
829 poll_wait (); 1032 default:
830 1033 req->type = type_path;
831 ++maxreqs; 1034 req_set_path1 (req, fh_or_path);
1035 break;
832 } 1036 }
833
834 unblock_sig ();
835 return count;
836}
837
838static void create_pipe ()
839{
840 if (pipe (respipe))
841 croak ("unable to initialize result pipe");
842
843 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844 croak ("cannot set result pipe to nonblocking mode");
845
846 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847 croak ("cannot set result pipe to nonblocking mode");
848} 1037}
849 1038
850/*****************************************************************************/ 1039/*****************************************************************************/
851/* work around various missing functions */
852 1040
853#if !HAVE_PREADWRITE 1041static void
854# define pread aio_pread 1042ts_set (struct timespec *ts, NV value)
855# define pwrite aio_pwrite
856
857/*
858 * make our pread/pwrite safe against themselves, but not against
859 * normal read/write by using a mutex. slows down execution a lot,
860 * but that's your problem, not mine.
861 */
862static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865{ 1043{
866 ssize_t res; 1044 ts->tv_sec = value;
867 off_t ooffset; 1045 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
868
869 LOCK (preadwritelock);
870 ooffset = lseek (fd, 0, SEEK_CUR);
871 lseek (fd, offset, SEEK_SET);
872 res = read (fd, buf, count);
873 lseek (fd, ooffset, SEEK_SET);
874 UNLOCK (preadwritelock);
875
876 return res;
877} 1046}
878 1047
879static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1048static NV
1049ts_get (const struct timespec *ts)
880{ 1050{
881 ssize_t res; 1051 return ts->tv_sec + ts->tv_nsec * 1e-9;
882 off_t ooffset;
883
884 LOCK (preadwritelock);
885 ooffset = lseek (fd, 0, SEEK_CUR);
886 lseek (fd, offset, SEEK_SET);
887 res = write (fd, buf, count);
888 lseek (fd, offset, SEEK_SET);
889 UNLOCK (preadwritelock);
890
891 return res;
892} 1052}
893#endif
894 1053
895#if !HAVE_FDATASYNC 1054/*****************************************************************************/
896# define fdatasync fsync
897#endif
898 1055
899#if !HAVE_READAHEAD 1056XS(boot_IO__AIO) ecb_cold;
900# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901 1057
902static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1058MODULE = IO::AIO PACKAGE = IO::AIO
903{
904 dBUF;
905 1059
906 while (count > 0) 1060PROTOTYPES: ENABLE
907 {
908 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909 1061
910 pread (fd, aio_buf, len, offset); 1062BOOT:
911 offset += len;
912 count -= len;
913 }
914
915 errno = 0;
916}
917
918#endif
919
920#if !HAVE_READDIR_R
921# define readdir_r aio_readdir_r
922
923static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926{ 1063{
927 struct dirent *e; 1064 static const struct {
928 int errorno; 1065 const char *name;
1066 IV iv;
1067 } *civ, const_iv[] = {
1068# define const_niv(name, value) { # name, (IV) value },
1069# define const_iv(name) { # name, (IV) name },
1070# define const_eio(name) { # name, (IV) EIO_ ## name },
929 1071
930 LOCK (readdirlock); 1072 /* you have to re-run ./gendef0 after adding/removing any constants here */
1073 /* the first block can be undef if missing */
1074 const_iv (ENOSYS)
1075 const_iv (EXDEV)
1076 const_iv (EBADR)
931 1077
932 e = readdir (dirp); 1078 /* for lseek */
933 errorno = errno; 1079 const_iv (SEEK_DATA)
1080 const_iv (SEEK_HOLE)
934 1081
935 if (e) 1082 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
936 { 1083 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
937 *res = ent; 1084 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
938 strcpy (ent->d_name, e->d_name); 1085 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
939 } 1086 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
940 else 1087 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
941 *res = 0;
942 1088
943 UNLOCK (readdirlock); 1089 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1090 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1091 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1092 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1093 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
944 1094
945 errno = errorno; 1095 /* the second block will be 0 when missing */
946 return e ? 0 : -1; 1096 const_iv (O_ACCMODE)
947}
948#endif
949 1097
950/* sendfile always needs emulation */ 1098 const_iv (O_RDONLY)
951static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1099 const_iv (O_WRONLY)
952{ 1100 const_iv (O_RDWR)
953 ssize_t res; 1101 const_iv (O_CREAT)
1102 const_iv (O_TRUNC)
1103 const_iv (O_EXCL)
1104 const_iv (O_APPEND)
954 1105
955 if (!count) 1106 const_iv (O_ASYNC)
956 return 0; 1107 const_iv (O_DIRECT)
1108 const_iv (O_NOATIME)
957 1109
958#if HAVE_SENDFILE 1110 const_iv (O_CLOEXEC)
959# if __linux 1111 const_iv (O_NOCTTY)
960 res = sendfile (ofd, ifd, &offset, count); 1112 const_iv (O_NOFOLLOW)
1113 const_iv (O_NONBLOCK)
1114 const_iv (O_EXEC)
1115 const_iv (O_SEARCH)
1116 const_iv (O_DIRECTORY)
1117 const_iv (O_DSYNC)
1118 const_iv (O_RSYNC)
1119 const_iv (O_SYNC)
1120 const_iv (O_PATH)
1121 const_iv (O_TMPFILE)
1122 const_iv (O_TTY_INIT)
961 1123
962# elif __freebsd 1124 const_iv (S_IFIFO)
963 /* 1125 const_iv (S_IFCHR)
964 * Of course, the freebsd sendfile is a dire hack with no thoughts 1126 const_iv (S_IFBLK)
965 * wasted on making it similar to other I/O functions. 1127 const_iv (S_IFLNK)
966 */ 1128 const_iv (S_IFREG)
1129 const_iv (S_IFDIR)
1130 const_iv (S_IFWHT)
1131 const_iv (S_IFSOCK)
1132 const_iv (S_IFMT)
1133
1134 const_iv (ST_RDONLY)
1135 const_iv (ST_NOSUID)
1136 const_iv (ST_NODEV)
1137 const_iv (ST_NOEXEC)
1138 const_iv (ST_SYNCHRONOUS)
1139 const_iv (ST_MANDLOCK)
1140 const_iv (ST_WRITE)
1141 const_iv (ST_APPEND)
1142 const_iv (ST_IMMUTABLE)
1143 const_iv (ST_NOATIME)
1144 const_iv (ST_NODIRATIME)
1145 const_iv (ST_RELATIME)
1146
1147 const_iv (PROT_NONE)
1148 const_iv (PROT_EXEC)
1149 const_iv (PROT_READ)
1150 const_iv (PROT_WRITE)
1151
1152 const_iv (MAP_PRIVATE)
1153 const_iv (MAP_SHARED)
1154 const_iv (MAP_FIXED)
1155 const_iv (MAP_ANONYMOUS)
1156
1157 /* linuxish */
1158 const_iv (MAP_LOCKED)
1159 const_iv (MAP_NORESERVE)
1160 const_iv (MAP_POPULATE)
1161 const_iv (MAP_NONBLOCK)
1162 const_iv (MAP_GROWSDOWN)
1163 const_iv (MAP_32BIT)
1164 const_iv (MAP_HUGETLB)
1165 const_iv (MAP_STACK)
1166
1167 const_iv (MREMAP_MAYMOVE)
1168 const_iv (MREMAP_FIXED)
1169
1170 const_iv (F_DUPFD_CLOEXEC)
1171
1172 const_iv (MSG_CMSG_CLOEXEC)
1173 const_iv (SOCK_CLOEXEC)
1174
1175 const_iv (F_OFD_GETLK)
1176 const_iv (F_OFD_SETLK)
1177 const_iv (F_OFD_GETLKW)
1178
1179 const_iv (FIFREEZE)
1180 const_iv (FITHAW)
1181 const_iv (FITRIM)
1182 const_iv (FICLONE)
1183 const_iv (FICLONERANGE)
1184 const_iv (FIDEDUPERANGE)
1185
1186 const_iv (FS_IOC_GETFLAGS)
1187 const_iv (FS_IOC_SETFLAGS)
1188 const_iv (FS_IOC_GETVERSION)
1189 const_iv (FS_IOC_SETVERSION)
1190 const_iv (FS_IOC_FIEMAP)
1191 const_iv (FS_IOC_FSGETXATTR)
1192 const_iv (FS_IOC_FSSETXATTR)
1193 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1194 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1195 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1196
1197 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1198
1199 const_iv (FS_SECRM_FL)
1200 const_iv (FS_UNRM_FL)
1201 const_iv (FS_COMPR_FL)
1202 const_iv (FS_SYNC_FL)
1203 const_iv (FS_IMMUTABLE_FL)
1204 const_iv (FS_APPEND_FL)
1205 const_iv (FS_NODUMP_FL)
1206 const_iv (FS_NOATIME_FL)
1207 const_iv (FS_DIRTY_FL)
1208 const_iv (FS_COMPRBLK_FL)
1209 const_iv (FS_NOCOMP_FL)
1210 const_iv (FS_ENCRYPT_FL)
1211 const_iv (FS_BTREE_FL)
1212 const_iv (FS_INDEX_FL)
1213 const_iv (FS_JOURNAL_DATA_FL)
1214 const_iv (FS_NOTAIL_FL)
1215 const_iv (FS_DIRSYNC_FL)
1216 const_iv (FS_TOPDIR_FL)
1217 const_iv (FS_FL_USER_MODIFIABLE)
1218
1219 const_iv (FS_XFLAG_REALTIME)
1220 const_iv (FS_XFLAG_PREALLOC)
1221 const_iv (FS_XFLAG_IMMUTABLE)
1222 const_iv (FS_XFLAG_APPEND)
1223 const_iv (FS_XFLAG_SYNC)
1224 const_iv (FS_XFLAG_NOATIME)
1225 const_iv (FS_XFLAG_NODUMP)
1226 const_iv (FS_XFLAG_RTINHERIT)
1227 const_iv (FS_XFLAG_PROJINHERIT)
1228 const_iv (FS_XFLAG_NOSYMLINKS)
1229 const_iv (FS_XFLAG_EXTSIZE)
1230 const_iv (FS_XFLAG_EXTSZINHERIT)
1231 const_iv (FS_XFLAG_NODEFRAG)
1232 const_iv (FS_XFLAG_FILESTREAM)
1233 const_iv (FS_XFLAG_DAX)
1234 const_iv (FS_XFLAG_HASATTR)
1235
1236 const_iv (FIEMAP_FLAG_SYNC)
1237 const_iv (FIEMAP_FLAG_XATTR)
1238 const_iv (FIEMAP_FLAGS_COMPAT)
1239 const_iv (FIEMAP_EXTENT_LAST)
1240 const_iv (FIEMAP_EXTENT_UNKNOWN)
1241 const_iv (FIEMAP_EXTENT_DELALLOC)
1242 const_iv (FIEMAP_EXTENT_ENCODED)
1243 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1244 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1245 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1246 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1247 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1248 const_iv (FIEMAP_EXTENT_MERGED)
1249 const_iv (FIEMAP_EXTENT_SHARED)
1250
1251 const_iv (SPLICE_F_MOVE)
1252 const_iv (SPLICE_F_NONBLOCK)
1253 const_iv (SPLICE_F_MORE)
1254 const_iv (SPLICE_F_GIFT)
1255
1256 const_iv (EFD_CLOEXEC)
1257 const_iv (EFD_NONBLOCK)
1258 const_iv (EFD_SEMAPHORE)
1259
1260 const_iv (CLOCK_REALTIME)
1261 const_iv (CLOCK_MONOTONIC)
1262 const_iv (CLOCK_BOOTTIME)
1263 const_iv (CLOCK_REALTIME_ALARM)
1264 const_iv (CLOCK_BOOTTIME_ALARM)
1265
1266 const_iv (TFD_NONBLOCK)
1267 const_iv (TFD_CLOEXEC)
1268
1269 const_iv (TFD_TIMER_ABSTIME)
1270 const_iv (TFD_TIMER_CANCEL_ON_SET)
1271
1272 /* these are libeio constants, and are independent of gendef0 */
1273 const_eio (SEEK_SET)
1274 const_eio (SEEK_CUR)
1275 const_eio (SEEK_END)
1276
1277 const_eio (MCL_FUTURE)
1278 const_eio (MCL_CURRENT)
1279 const_eio (MCL_ONFAULT)
1280
1281 const_eio (MS_ASYNC)
1282 const_eio (MS_INVALIDATE)
1283 const_eio (MS_SYNC)
1284
1285 const_eio (MT_MODIFY)
1286
1287 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1288 const_eio (SYNC_FILE_RANGE_WRITE)
1289 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1290
1291 const_eio (FALLOC_FL_KEEP_SIZE)
1292 const_eio (FALLOC_FL_PUNCH_HOLE)
1293 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1294 const_eio (FALLOC_FL_ZERO_RANGE)
1295 const_eio (FALLOC_FL_INSERT_RANGE)
1296 const_eio (FALLOC_FL_UNSHARE_RANGE)
1297
1298 const_eio (RENAME_NOREPLACE)
1299 const_eio (RENAME_EXCHANGE)
1300 const_eio (RENAME_WHITEOUT)
1301
1302 const_eio (READDIR_DENTS)
1303 const_eio (READDIR_DIRS_FIRST)
1304 const_eio (READDIR_STAT_ORDER)
1305 const_eio (READDIR_FOUND_UNKNOWN)
1306
1307 const_eio (DT_UNKNOWN)
1308 const_eio (DT_FIFO)
1309 const_eio (DT_CHR)
1310 const_eio (DT_DIR)
1311 const_eio (DT_BLK)
1312 const_eio (DT_REG)
1313 const_eio (DT_LNK)
1314 const_eio (DT_SOCK)
1315 const_eio (DT_WHT)
1316 };
1317
1318 aio_stash = gv_stashpv ("IO::AIO" , 1);
1319 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1320 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1321 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1322
1323 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1324 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1325
1326 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1327
1328 /* allocate dummy pipe fd for aio_close */
967 { 1329 {
968 off_t sbytes; 1330 int pipefd [2];
969 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970 1331
971 if (res < 0 && sbytes) 1332 if (
972 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1333#ifdef _WIN32
973 res = sbytes; 1334 _pipe (pipefd, 1, _O_BINARY) < 0
1335#else
1336 pipe (pipefd) < 0
1337 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1338#endif
1339 || close (pipefd [1]) < 0
1340 )
1341 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1342
1343 close_fd = pipefd [0];
974 } 1344 }
975 1345
976# elif __hpux 1346 reinit ();
977 res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979# elif __solaris
980 {
981 struct sendfilevec vec;
982 size_t sbytes;
983
984 vec.sfv_fd = ifd;
985 vec.sfv_flag = 0;
986 vec.sfv_off = offset;
987 vec.sfv_len = count;
988
989 res = sendfilev (ofd, &vec, 1, &sbytes);
990
991 if (res < 0 && sbytes)
992 res = sbytes;
993 }
994
995# endif
996#else
997 res = -1;
998 errno = ENOSYS;
999#endif
1000
1001 if (res < 0
1002 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003#if __solaris
1004 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005#endif
1006 )
1007 )
1008 {
1009 /* emulate sendfile. this is a major pain in the ass */
1010 dBUF;
1011
1012 res = 0;
1013
1014 while (count)
1015 {
1016 ssize_t cnt;
1017
1018 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020 if (cnt <= 0)
1021 {
1022 if (cnt && !res) res = -1;
1023 break;
1024 }
1025
1026 cnt = write (ofd, aio_buf, cnt);
1027
1028 if (cnt <= 0)
1029 {
1030 if (cnt && !res) res = -1;
1031 break;
1032 }
1033
1034 offset += cnt;
1035 res += cnt;
1036 count -= cnt;
1037 }
1038 }
1039
1040 return res;
1041} 1347}
1042 1348
1043/* read a full directory */
1044static void scandir_ (aio_req req, worker *self)
1045{
1046 DIR *dirp;
1047 union
1048 {
1049 struct dirent d;
1050 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051 } *u;
1052 struct dirent *entp;
1053 char *name, *names;
1054 int memlen = 4096;
1055 int memofs = 0;
1056 int res = 0;
1057 int errorno;
1058
1059 LOCK (wrklock);
1060 self->dirp = dirp = opendir (req->ptr1);
1061 self->dbuf = u = malloc (sizeof (*u));
1062 req->flags |= FLAG_PTR2_FREE;
1063 req->ptr2 = names = malloc (memlen);
1064 UNLOCK (wrklock);
1065
1066 if (dirp && u && names)
1067 for (;;)
1068 {
1069 errno = 0;
1070 readdir_r (dirp, &u->d, &entp);
1071
1072 if (!entp)
1073 break;
1074
1075 name = entp->d_name;
1076
1077 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078 {
1079 int len = strlen (name) + 1;
1080
1081 res++;
1082
1083 while (memofs + len > memlen)
1084 {
1085 memlen *= 2;
1086 LOCK (wrklock);
1087 req->ptr2 = names = realloc (names, memlen);
1088 UNLOCK (wrklock);
1089
1090 if (!names)
1091 break;
1092 }
1093
1094 memcpy (names + memofs, name, len);
1095 memofs += len;
1096 }
1097 }
1098
1099 if (errno)
1100 res = -1;
1101
1102 req->result = res;
1103}
1104
1105/*****************************************************************************/
1106
1107static void *aio_proc (void *thr_arg)
1108{
1109 aio_req req;
1110 struct timespec ts;
1111 worker *self = (worker *)thr_arg;
1112
1113 /* try to distribute timeouts somewhat evenly */
1114 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115 * (1000000000UL / 1024UL);
1116
1117 for (;;)
1118 {
1119 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121 LOCK (reqlock);
1122
1123 for (;;)
1124 {
1125 self->req = req = reqq_shift (&req_queue);
1126
1127 if (req)
1128 break;
1129
1130 ++idle;
1131
1132 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133 == ETIMEDOUT)
1134 {
1135 if (idle > max_idle)
1136 {
1137 --idle;
1138 UNLOCK (reqlock);
1139 LOCK (wrklock);
1140 --started;
1141 UNLOCK (wrklock);
1142 goto quit;
1143 }
1144
1145 /* we are allowed to idle, so do so without any timeout */
1146 pthread_cond_wait (&reqwait, &reqlock);
1147 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148 }
1149
1150 --idle;
1151 }
1152
1153 --nready;
1154
1155 UNLOCK (reqlock);
1156
1157 errno = 0; /* strictly unnecessary */
1158
1159 if (!(req->flags & FLAG_CANCELLED))
1160 switch (req->type)
1161 {
1162 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173 case REQ_CLOSE: req->result = close (req->int1); break;
1174 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1177 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1178 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1179 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1180 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1181
1182 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1183 case REQ_FSYNC: req->result = fsync (req->int1); break;
1184 case REQ_READDIR: scandir_ (req, self); break;
1185
1186 case REQ_BUSY:
1187 {
1188 struct timeval tv;
1189
1190 tv.tv_sec = req->int1;
1191 tv.tv_usec = req->int2;
1192
1193 req->result = select (0, 0, 0, 0, &tv);
1194 }
1195
1196 case REQ_GROUP:
1197 case REQ_NOP:
1198 break;
1199
1200 case REQ_QUIT:
1201 goto quit;
1202
1203 default:
1204 req->result = ENOSYS;
1205 break;
1206 }
1207
1208 req->errorno = errno;
1209
1210 LOCK (reslock);
1211
1212 ++npending;
1213
1214 if (!reqq_push (&res_queue, req))
1215 {
1216 /* write a dummy byte to the pipe so fh becomes ready */
1217 write (respipe [1], &respipe, 1);
1218
1219 /* optionally signal the main thread asynchronously */
1220 if (main_sig)
1221 pthread_kill (main_tid, main_sig);
1222 }
1223
1224 self->req = 0;
1225 worker_clear (self);
1226
1227 UNLOCK (reslock);
1228 }
1229
1230quit:
1231 LOCK (wrklock);
1232 worker_free (self);
1233 UNLOCK (wrklock);
1234
1235 return 0;
1236}
1237
1238/*****************************************************************************/
1239
1240static void atfork_prepare (void)
1241{
1242 LOCK (wrklock);
1243 LOCK (reqlock);
1244 LOCK (reslock);
1245#if !HAVE_PREADWRITE
1246 LOCK (preadwritelock);
1247#endif
1248#if !HAVE_READDIR_R
1249 LOCK (readdirlock);
1250#endif
1251}
1252
1253static void atfork_parent (void)
1254{
1255#if !HAVE_READDIR_R
1256 UNLOCK (readdirlock);
1257#endif
1258#if !HAVE_PREADWRITE
1259 UNLOCK (preadwritelock);
1260#endif
1261 UNLOCK (reslock);
1262 UNLOCK (reqlock);
1263 UNLOCK (wrklock);
1264}
1265
1266static void atfork_child (void)
1267{
1268 aio_req prv;
1269
1270 while (prv = reqq_shift (&req_queue))
1271 req_free (prv);
1272
1273 while (prv = reqq_shift (&res_queue))
1274 req_free (prv);
1275
1276 while (wrk_first.next != &wrk_first)
1277 {
1278 worker *wrk = wrk_first.next;
1279
1280 if (wrk->req)
1281 req_free (wrk->req);
1282
1283 worker_clear (wrk);
1284 worker_free (wrk);
1285 }
1286
1287 started = 0;
1288 idle = 0;
1289 nreqs = 0;
1290 nready = 0;
1291 npending = 0;
1292
1293 close (respipe [0]);
1294 close (respipe [1]);
1295 create_pipe ();
1296
1297 atfork_parent ();
1298}
1299
1300#define dREQ \
1301 aio_req req; \
1302 int req_pri = next_pri; \
1303 next_pri = DEFAULT_PRI + PRI_BIAS; \
1304 \
1305 if (SvOK (callback) && !SvROK (callback)) \
1306 croak ("callback must be undef or of reference type"); \
1307 \
1308 Newz (0, req, 1, aio_cb); \
1309 if (!req) \
1310 croak ("out of memory during aio_req allocation"); \
1311 \
1312 req->callback = newSVsv (callback); \
1313 req->pri = req_pri
1314
1315#define REQ_SEND \
1316 req_send (req); \
1317 \
1318 if (GIMME_V != G_VOID) \
1319 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1320
1321MODULE = IO::AIO PACKAGE = IO::AIO
1322
1323PROTOTYPES: ENABLE
1324
1325BOOT:
1326{
1327 HV *stash = gv_stashpv ("IO::AIO", 1);
1328
1329 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1330 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1331 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1332 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1333 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1334 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1335 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1336
1337 create_pipe ();
1338 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1339}
1340
1341void 1349void
1350reinit ()
1351 PROTOTYPE:
1352
1353void
1342max_poll_reqs (int nreqs) 1354max_poll_reqs (unsigned int nreqs)
1343 PROTOTYPE: $ 1355 PROTOTYPE: $
1344 CODE: 1356 CODE:
1345 max_poll_reqs = nreqs; 1357 eio_set_max_poll_reqs (nreqs);
1346 1358
1347void 1359void
1348max_poll_time (double nseconds) 1360max_poll_time (double nseconds)
1349 PROTOTYPE: $ 1361 PROTOTYPE: $
1350 CODE: 1362 CODE:
1351 max_poll_time = nseconds * AIO_TICKS; 1363 eio_set_max_poll_time (nseconds);
1352 1364
1353void 1365void
1354min_parallel (int nthreads) 1366min_parallel (unsigned int nthreads)
1355 PROTOTYPE: $
1356
1357void
1358max_parallel (int nthreads)
1359 PROTOTYPE: $
1360
1361void
1362max_idle (int nthreads)
1363 PROTOTYPE: $ 1367 PROTOTYPE: $
1364 CODE: 1368 CODE:
1365 set_max_idle (nthreads); 1369 eio_set_min_parallel (nthreads);
1366 1370
1367int 1371void
1368max_outstanding (int maxreqs) 1372max_parallel (unsigned int nthreads)
1369 PROTOTYPE: $ 1373 PROTOTYPE: $
1370 CODE: 1374 CODE:
1371 RETVAL = max_outstanding; 1375 eio_set_max_parallel (nthreads);
1376
1377void
1378max_idle (unsigned int nthreads)
1379 PROTOTYPE: $
1380 CODE:
1381 eio_set_max_idle (nthreads);
1382
1383void
1384idle_timeout (unsigned int seconds)
1385 PROTOTYPE: $
1386 CODE:
1387 eio_set_idle_timeout (seconds);
1388
1389void
1390max_outstanding (unsigned int maxreqs)
1391 PROTOTYPE: $
1392 CODE:
1372 max_outstanding = maxreqs; 1393 max_outstanding = maxreqs;
1373 OUTPUT:
1374 RETVAL
1375 1394
1376void 1395void
1377aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1396aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1378 SV8 * pathname
1379 int flags
1380 int mode
1381 SV * callback
1382 PROTOTYPE: $$$;$
1383 PPCODE: 1397 PPCODE:
1384{ 1398{
1385 dREQ; 1399 dREQ;
1386 1400
1401 req->type = EIO_WD_OPEN;
1402 req_set_path1 (req, pathname);
1403
1404 REQ_SEND;
1405}
1406
1407void
1408aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1409 PPCODE:
1410{
1411 dREQ;
1412
1387 req->type = REQ_OPEN; 1413 req->type = EIO_OPEN;
1388 req->sv1 = newSVsv (pathname); 1414 req_set_path1 (req, pathname);
1389 req->ptr1 = SvPVbyte_nolen (req->sv1);
1390 req->int1 = flags; 1415 req->int1 = flags;
1391 req->mode = mode; 1416 req->int2 = mode;
1392 1417
1393 REQ_SEND; 1418 REQ_SEND;
1394} 1419}
1395 1420
1396void 1421void
1397aio_close (fh,callback=&PL_sv_undef) 1422aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1398 SV * fh
1399 SV * callback
1400 PROTOTYPE: $;$
1401 ALIAS: 1423 ALIAS:
1402 aio_close = REQ_CLOSE
1403 aio_fsync = REQ_FSYNC 1424 aio_fsync = EIO_FSYNC
1404 aio_fdatasync = REQ_FDATASYNC 1425 aio_fdatasync = EIO_FDATASYNC
1426 aio_syncfs = EIO_SYNCFS
1405 PPCODE: 1427 PPCODE:
1406{ 1428{
1429 int fd = s_fileno_croak (fh, 0);
1407 dREQ; 1430 dREQ;
1408 1431
1409 req->type = ix; 1432 req->type = ix;
1410 req->fh = newSVsv (fh); 1433 req->sv1 = newSVsv (fh);
1411 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1434 req->int1 = fd;
1412 1435
1413 REQ_SEND (req); 1436 REQ_SEND;
1414} 1437}
1415 1438
1416void 1439void
1417aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1440aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1418 SV * fh 1441 PPCODE:
1419 UV offset
1420 UV length
1421 SV8 * data
1422 UV dataoffset
1423 SV * callback
1424 ALIAS:
1425 aio_read = REQ_READ
1426 aio_write = REQ_WRITE
1427 PROTOTYPE: $$$$$;$
1428 PPCODE:
1429{ 1442{
1430 STRLEN svlen; 1443 int fd = s_fileno_croak (fh, 0);
1431 char *svptr = SvPVbyte (data, svlen); 1444 dREQ;
1432 1445
1433 SvUPGRADE (data, SVt_PV); 1446 req->type = EIO_SYNC_FILE_RANGE;
1434 SvPOK_on (data); 1447 req->sv1 = newSVsv (fh);
1448 req->int1 = fd;
1449 req->offs = offset;
1450 req->size = nbytes;
1451 req->int2 = flags;
1435 1452
1436 if (dataoffset < 0) 1453 REQ_SEND;
1437 dataoffset += svlen; 1454}
1438 1455
1439 if (dataoffset < 0 || dataoffset > svlen) 1456void
1440 croak ("data offset outside of string"); 1457aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1458 PPCODE:
1459{
1460 int fd = s_fileno_croak (fh, 0);
1461 dREQ;
1441 1462
1442 if (ix == REQ_WRITE) 1463 req->type = EIO_FALLOCATE;
1464 req->sv1 = newSVsv (fh);
1465 req->int1 = fd;
1466 req->int2 = mode;
1467 req->offs = offset;
1468 req->size = len;
1469
1470 REQ_SEND;
1471}
1472
1473void
1474aio_close (SV *fh, SV *callback = &PL_sv_undef)
1475 PPCODE:
1476{
1477 dREQ;
1478 int fd = s_fileno_croak (fh, 0);
1479
1480 /* partially duplicate logic in s_fileno */
1481 SvGETMAGIC (fh);
1482
1483 if (SvROK (fh))
1484 {
1485 fh = SvRV (fh);
1486 SvGETMAGIC (fh);
1487 }
1488
1489 if (SvTYPE (fh) == SVt_PVGV)
1443 { 1490 {
1444 /* write: check length and adjust. */ 1491 /* perl filehandle */
1445 if (length < 0 || length + dataoffset > svlen) 1492 PerlIOUnix_refcnt_inc (fd);
1446 length = svlen - dataoffset; 1493 do_close ((GV *)fh, 1);
1494
1495 req->type = EIO_CLOSE;
1496 req->int1 = fd;
1497 req->sv2 = newSVsv (fh);
1447 } 1498 }
1448 else 1499 else
1449 { 1500 {
1450 /* read: grow scalar as necessary */ 1501 /* fd number */
1451 svptr = SvGROW (data, length + dataoffset + 1); 1502 req->type = EIO_DUP2;
1503 req->int1 = close_fd;
1504 req->sv2 = newSVsv (fh);
1505 req->int2 = fd;
1452 } 1506 }
1453 1507
1508 REQ_SEND;
1509}
1510
1511void
1512aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1513 PPCODE:
1514{
1515 int fd = s_fileno_croak (fh, 0);
1516 dREQ;
1517
1518 req->type = EIO_SEEK;
1519 req->sv1 = newSVsv (fh);
1520 req->int1 = fd;
1521 req->offs = SvVAL64 (offset);
1522 req->int2 = whence;
1523
1524 REQ_SEND;
1525}
1526
1527void
1528aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1529 ALIAS:
1530 aio_read = EIO_READ
1531 aio_write = EIO_WRITE
1532 PPCODE:
1533{
1534 STRLEN svlen;
1535 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1536 char *svptr = SvPVbyte (data, svlen);
1537 UV len = SvUV (length);
1538
1454 if (length < 0) 1539 if (dataoffset < 0)
1455 croak ("length must not be negative"); 1540 dataoffset += svlen;
1541
1542 if (dataoffset < 0 || dataoffset > svlen)
1543 croak ("dataoffset outside of data scalar");
1544
1545 if (ix == EIO_WRITE)
1546 {
1547 /* write: check length and adjust. */
1548 if (!SvOK (length) || len + dataoffset > svlen)
1549 len = svlen - dataoffset;
1550 }
1551 else
1552 {
1553 /* read: check type and grow scalar as necessary */
1554 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1555 svptr = sv_grow (data, len + dataoffset + 1);
1556 else if (SvCUR (data) < len + dataoffset)
1557 croak ("length + dataoffset outside of scalar, and cannot grow");
1558 }
1456 1559
1457 { 1560 {
1458 dREQ; 1561 dREQ;
1459 1562
1460 req->type = ix; 1563 req->type = ix;
1461 req->fh = newSVsv (fh); 1564 req->sv1 = newSVsv (fh);
1462 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1565 req->int1 = fd;
1463 : IoOFP (sv_2io (fh))); 1566 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464 req->offs = offset;
1465 req->size = length; 1567 req->size = len;
1466 req->sv1 = SvREFCNT_inc (data); 1568 req->sv2 = SvREFCNT_inc (data);
1467 req->ptr1 = (char *)svptr + dataoffset; 1569 req->ptr2 = (char *)svptr + dataoffset;
1468 req->stroffset = dataoffset; 1570 req->stroffset = dataoffset;
1469 1571
1470 if (!SvREADONLY (data)) 1572 if (!SvREADONLY (data))
1471 { 1573 {
1472 SvREADONLY_on (data); 1574 SvREADONLY_on (data);
1473 req->flags |= FLAG_SV1_RO_OFF; 1575 req->flags |= FLAG_SV2_RO_OFF;
1474 } 1576 }
1475 1577
1476 REQ_SEND; 1578 REQ_SEND;
1477 } 1579 }
1478} 1580}
1479 1581
1480void 1582void
1481aio_readlink (path,callback=&PL_sv_undef) 1583aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1482 SV8 * path 1584 ALIAS:
1483 SV * callback 1585 aio_ioctl = EIO_IOCTL
1484 PROTOTYPE: $$;$ 1586 aio_fcntl = EIO_FCNTL
1485 PPCODE: 1587 PPCODE:
1486{ 1588{
1487 SV *data; 1589 int fd = s_fileno_croak (fh, 0);
1590 char *svptr;
1591
1592 if (SvPOK (arg) || !SvNIOK (arg))
1593 {
1594 STRLEN svlen;
1595 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1596#ifdef IOCPARM_LEN
1597 STRLEN need = IOCPARM_LEN (request);
1598#else
1599 STRLEN need = 256;
1600#endif
1601
1602 if (svlen < need)
1603 svptr = SvGROW (arg, need);
1604 }
1605 else
1606 svptr = (char *)SvIV (arg);
1607
1608 {
1609 dREQ;
1610
1611 req->type = ix;
1612 req->sv1 = newSVsv (fh);
1613 req->int1 = fd;
1614 req->int2 = (long)request;
1615 req->sv2 = SvREFCNT_inc (arg);
1616 req->ptr2 = svptr;
1617
1618 REQ_SEND;
1619 }
1620}
1621
1622void
1623aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1624 ALIAS:
1625 aio_readlink = EIO_READLINK
1626 aio_realpath = EIO_REALPATH
1627 PPCODE:
1628{
1488 dREQ; 1629 dREQ;
1489 1630
1490 data = newSV (NAME_MAX);
1491 SvPOK_on (data);
1492
1493 req->type = REQ_READLINK; 1631 req->type = ix;
1494 req->fh = newSVsv (path); 1632 req_set_path1 (req, pathname);
1495 req->ptr2 = SvPVbyte_nolen (req->fh);
1496 req->sv1 = data;
1497 req->ptr1 = SvPVbyte_nolen (data);
1498 1633
1499 REQ_SEND; 1634 REQ_SEND;
1500} 1635}
1501 1636
1502void 1637void
1503aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1638aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1504 SV * out_fh
1505 SV * in_fh
1506 UV in_offset
1507 UV length
1508 SV * callback
1509 PROTOTYPE: $$$$;$
1510 PPCODE: 1639 PPCODE:
1511{ 1640{
1641 int ifd = s_fileno_croak (in_fh , 0);
1642 int ofd = s_fileno_croak (out_fh, 1);
1512 dREQ; 1643 dREQ;
1513 1644
1514 req->type = REQ_SENDFILE; 1645 req->type = EIO_SENDFILE;
1515 req->fh = newSVsv (out_fh); 1646 req->sv1 = newSVsv (out_fh);
1516 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1647 req->int1 = ofd;
1517 req->sv2 = newSVsv (in_fh); 1648 req->sv2 = newSVsv (in_fh);
1518 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1649 req->int2 = ifd;
1519 req->offs = in_offset; 1650 req->offs = in_offset;
1520 req->size = length; 1651 req->size = length;
1521 1652
1522 REQ_SEND; 1653 REQ_SEND;
1523} 1654}
1524 1655
1525void 1656void
1526aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1657aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1527 SV * fh
1528 UV offset
1529 IV length
1530 SV * callback
1531 PROTOTYPE: $$$;$
1532 PPCODE: 1658 PPCODE:
1533{ 1659{
1660 int fd = s_fileno_croak (fh, 0);
1534 dREQ; 1661 dREQ;
1535 1662
1536 req->type = REQ_READAHEAD; 1663 req->type = EIO_READAHEAD;
1537 req->fh = newSVsv (fh); 1664 req->sv1 = newSVsv (fh);
1538 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1665 req->int1 = fd;
1539 req->offs = offset; 1666 req->offs = offset;
1540 req->size = length; 1667 req->size = length;
1541 1668
1542 REQ_SEND; 1669 REQ_SEND;
1543} 1670}
1544 1671
1545void 1672void
1546aio_stat (fh_or_path,callback=&PL_sv_undef) 1673aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1547 SV8 * fh_or_path
1548 SV * callback
1549 ALIAS: 1674 ALIAS:
1550 aio_stat = REQ_STAT 1675 aio_stat = EIO_STAT
1551 aio_lstat = REQ_LSTAT 1676 aio_lstat = EIO_LSTAT
1677 aio_statvfs = EIO_STATVFS
1552 PPCODE: 1678 PPCODE:
1553{ 1679{
1554 dREQ; 1680 dREQ;
1555 1681
1556 req->ptr2 = malloc (sizeof (Stat_t)); 1682 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1557 if (!req->ptr2)
1558 {
1559 req_free (req);
1560 croak ("out of memory during aio_stat statdata allocation");
1561 }
1562
1563 req->flags |= FLAG_PTR2_FREE;
1564
1565 if (SvPOK (fh_or_path))
1566 {
1567 req->type = ix;
1568 req->sv1 = newSVsv (fh_or_path);
1569 req->ptr1 = SvPVbyte_nolen (req->sv1);
1570 }
1571 else
1572 {
1573 req->type = REQ_FSTAT;
1574 req->fh = newSVsv (fh_or_path);
1575 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576 }
1577 1683
1578 REQ_SEND; 1684 REQ_SEND;
1579} 1685}
1580 1686
1581void 1687void
1688st_xtime ()
1689 ALIAS:
1690 st_atime = 0x01
1691 st_mtime = 0x02
1692 st_ctime = 0x04
1693 st_btime = 0x08
1694 st_xtime = 0x0f
1695 PPCODE:
1696 EXTEND (SP, 4);
1697 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1698 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1699 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1700 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1701
1702void
1703st_xtimensec ()
1704 ALIAS:
1705 st_atimensec = 0x01
1706 st_mtimensec = 0x02
1707 st_ctimensec = 0x04
1708 st_btimensec = 0x08
1709 st_xtimensec = 0x0f
1710 st_btimesec = 0x10
1711 st_gen = 0x20
1712 PPCODE:
1713 EXTEND (SP, 4);
1714 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1715 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1716 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1717 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1718 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1719 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1720
1721UV
1722major (UV dev)
1723 ALIAS:
1724 minor = 1
1725 CODE:
1726 RETVAL = ix ? minor (dev) : major (dev);
1727 OUTPUT:
1728 RETVAL
1729
1730UV
1731makedev (UV maj, UV min)
1732 CODE:
1733 RETVAL = makedev (maj, min);
1734 OUTPUT:
1735 RETVAL
1736
1737void
1738aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1739 PPCODE:
1740{
1741 dREQ;
1742
1743 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1744 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1745 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1746
1747 REQ_SEND;
1748}
1749
1750void
1751aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1752 PPCODE:
1753{
1754 dREQ;
1755
1756 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1757 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1758
1759 REQ_SEND;
1760}
1761
1762void
1763aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1764 PPCODE:
1765{
1766 dREQ;
1767
1768 req->int2 = mode;
1769 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1770
1771 REQ_SEND;
1772}
1773
1774void
1775aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1776 PPCODE:
1777{
1778 dREQ;
1779
1780 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1781 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1782 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1783
1784 REQ_SEND;
1785}
1786
1787void
1788aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1789 PPCODE:
1790{
1791 dREQ;
1792
1793 req->type = EIO_READDIR;
1794 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1795
1796 if (flags & EIO_READDIR_DENTS)
1797 req->int1 |= EIO_READDIR_CUSTOM2;
1798
1799 req_set_path1 (req, pathname);
1800
1801 REQ_SEND;
1802}
1803
1804void
1805aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1806 PPCODE:
1807{
1808 dREQ;
1809
1810 req->type = EIO_MKDIR;
1811 req->int2 = mode;
1812 req_set_path1 (req, pathname);
1813
1814 REQ_SEND;
1815}
1816
1817void
1582aio_unlink (pathname,callback=&PL_sv_undef) 1818aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1583 SV8 * pathname
1584 SV * callback
1585 ALIAS: 1819 ALIAS:
1586 aio_unlink = REQ_UNLINK 1820 aio_unlink = EIO_UNLINK
1587 aio_rmdir = REQ_RMDIR 1821 aio_rmdir = EIO_RMDIR
1588 aio_readdir = REQ_READDIR 1822 aio_readdir = EIO_READDIR
1589 PPCODE: 1823 PPCODE:
1590{ 1824{
1591 dREQ; 1825 dREQ;
1592 1826
1593 req->type = ix; 1827 req->type = ix;
1594 req->sv1 = newSVsv (pathname); 1828 req_set_path1 (req, pathname);
1595 req->ptr1 = SvPVbyte_nolen (req->sv1);
1596 1829
1597 REQ_SEND; 1830 REQ_SEND;
1598} 1831}
1599 1832
1600void 1833void
1601aio_link (oldpath,newpath,callback=&PL_sv_undef) 1834aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1602 SV8 * oldpath
1603 SV8 * newpath
1604 SV * callback
1605 ALIAS: 1835 ALIAS:
1606 aio_link = REQ_LINK 1836 aio_link = EIO_LINK
1607 aio_symlink = REQ_SYMLINK 1837 aio_symlink = EIO_SYMLINK
1608 aio_rename = REQ_RENAME 1838 aio_rename = EIO_RENAME
1609 PPCODE: 1839 PPCODE:
1610{ 1840{
1841 eio_wd wd2 = 0;
1611 dREQ; 1842 dREQ;
1612 1843
1613 req->type = ix; 1844 req->type = ix;
1614 req->fh = newSVsv (oldpath); 1845 req_set_path1 (req, oldpath);
1615 req->ptr2 = SvPVbyte_nolen (req->fh); 1846 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1616 req->sv1 = newSVsv (newpath); 1847 req->int3 = (long)wd2;
1617 req->ptr1 = SvPVbyte_nolen (req->sv1);
1618 1848
1619 REQ_SEND; 1849 REQ_SEND;
1620} 1850}
1621 1851
1622void 1852void
1623aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1853aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1624 SV8 * pathname
1625 SV * callback
1626 UV mode
1627 UV dev
1628 PPCODE: 1854 PPCODE:
1629{ 1855{
1856 eio_wd wd2 = 0;
1630 dREQ; 1857 dREQ;
1631 1858
1632 req->type = REQ_MKNOD; 1859 req->type = EIO_RENAME;
1633 req->sv1 = newSVsv (pathname); 1860 req_set_path1 (req, oldpath);
1634 req->ptr1 = SvPVbyte_nolen (req->sv1); 1861 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1635 req->mode = (mode_t)mode; 1862 req->int2 = flags;
1636 req->offs = dev; 1863 req->int3 = (long)wd2;
1637 1864
1638 REQ_SEND; 1865 REQ_SEND;
1639} 1866}
1640 1867
1641void 1868void
1642aio_busy (delay,callback=&PL_sv_undef) 1869aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1643 double delay
1644 SV * callback
1645 PPCODE: 1870 PPCODE:
1646{ 1871{
1647 dREQ; 1872 dREQ;
1648 1873
1649 req->type = REQ_BUSY; 1874 req->type = EIO_MKNOD;
1650 req->int1 = delay < 0. ? 0 : delay; 1875 req->int2 = (mode_t)mode;
1651 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1876 req->offs = dev;
1652 1877 req_set_path1 (req, pathname);
1878
1653 REQ_SEND; 1879 REQ_SEND;
1654} 1880}
1655 1881
1656void 1882void
1657aio_group (callback=&PL_sv_undef) 1883aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1658 SV * callback 1884 ALIAS:
1659 PROTOTYPE: ;$ 1885 aio_mtouch = EIO_MTOUCH
1886 aio_msync = EIO_MSYNC
1660 PPCODE: 1887 PPCODE:
1661{ 1888{
1889 STRLEN svlen;
1890 char *svptr = SvPVbyte (data, svlen);
1891 UV len = SvUV (length);
1892
1893 if (flags < 0)
1894 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1895
1896 if (offset < 0)
1897 offset += svlen;
1898
1899 if (offset < 0 || offset > svlen)
1900 croak ("offset outside of scalar");
1901
1902 if (!SvOK (length) || len + offset > svlen)
1903 len = svlen - offset;
1904
1905 {
1906 dREQ;
1907
1908 req->type = ix;
1909 req->sv2 = SvREFCNT_inc (data);
1910 req->ptr2 = (char *)svptr + offset;
1911 req->size = len;
1912 req->int1 = flags;
1913
1914 REQ_SEND;
1915 }
1916}
1917
1918void
1919aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1920 PPCODE:
1921{
1922 STRLEN svlen;
1923 char *svptr = SvPVbyte (data, svlen);
1924 UV len = SvUV (length);
1925
1926 if (offset < 0)
1927 offset += svlen;
1928
1929 if (offset < 0 || offset > svlen)
1930 croak ("offset outside of scalar");
1931
1932 if (!SvOK (length) || len + offset > svlen)
1933 len = svlen - offset;
1934
1935 {
1936 dREQ;
1937
1938 req->type = EIO_MLOCK;
1939 req->sv2 = SvREFCNT_inc (data);
1940 req->ptr2 = (char *)svptr + offset;
1941 req->size = len;
1942
1943 REQ_SEND;
1944 }
1945}
1946
1947void
1948aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1949 PPCODE:
1950{
1951 dREQ;
1952
1953 req->type = EIO_MLOCKALL;
1954 req->int1 = flags;
1955
1956 REQ_SEND;
1957}
1958
1959void
1960aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1961 PPCODE:
1962{
1963 int fd = s_fileno_croak (fh, 0);
1662 dREQ; 1964 dREQ;
1663 1965
1664 req->type = REQ_GROUP; 1966 req->type = EIO_CUSTOM;
1967 req->sv1 = newSVsv (fh);
1968 req->int1 = fd;
1665 1969
1666 req_send (req); 1970 req->feed = fiemap;
1667 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1971#if HAVE_FIEMAP
1668} 1972 /* keep our fingers crossed that the next two types are 64 bit */
1973 req->offs = start;
1974 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1975 req->int2 = flags;
1976 req->int3 = SvOK (count) ? SvIV (count) : -1;
1977#endif
1669 1978
1979 REQ_SEND;
1980}
1981
1670void 1982void
1671aio_nop (callback=&PL_sv_undef) 1983aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1672 SV * callback 1984 PPCODE:
1985{
1986 char *svptr = 0;
1987
1988 sv_clear_foreign (data);
1989
1990 if (length) /* known length, directly read into scalar */
1991 {
1992 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1993 svptr = sv_grow (data, length + 1);
1994 else if (SvCUR (data) < length)
1995 croak ("length outside of scalar, and cannot grow");
1996 else
1997 svptr = SvPVbyte_nolen (data);
1998 }
1999
2000 {
2001 dREQ;
2002
2003 req->type = EIO_SLURP;
2004 req_set_path1 (req, pathname);
2005 req->offs = offset;
2006 req->size = length;
2007 req->sv2 = SvREFCNT_inc (data);
2008 req->ptr2 = svptr;
2009
2010 if (!SvREADONLY (data))
2011 {
2012 SvREADONLY_on (data);
2013 req->flags |= FLAG_SV2_RO_OFF;
2014 }
2015
2016 REQ_SEND;
2017 }
2018}
2019
2020void
2021aio_busy (double delay, SV *callback = &PL_sv_undef)
1673 PPCODE: 2022 PPCODE:
1674{ 2023{
1675 dREQ; 2024 dREQ;
1676 2025
1677 req->type = REQ_NOP; 2026 req->type = EIO_BUSY;
2027 req->nv1 = delay < 0. ? 0. : delay;
1678 2028
1679 REQ_SEND; 2029 REQ_SEND;
1680} 2030}
1681 2031
2032void
2033aio_group (SV *callback = &PL_sv_undef)
2034 PPCODE:
2035{
2036 dREQ;
2037
2038 req->type = EIO_GROUP;
2039
2040 PUTBACK;
2041 req_submit (req);
2042 SPAGAIN;
2043
2044 XPUSHs (req_sv (req, aio_grp_stash));
2045}
2046
2047void
2048aio_nop (SV *callback = &PL_sv_undef)
2049 ALIAS:
2050 aio_nop = EIO_NOP
2051 aio_sync = EIO_SYNC
2052 PPCODE:
2053{
2054 dREQ;
2055
2056 req->type = ix;
2057
2058 REQ_SEND;
2059}
2060
1682int 2061int
1683aioreq_pri (int pri = 0) 2062aioreq_pri (int pri = NO_INIT)
1684 PROTOTYPE: ;$
1685 CODE: 2063 CODE:
1686 RETVAL = next_pri - PRI_BIAS; 2064 RETVAL = next_pri;
1687 if (items > 0) 2065 if (items > 0)
1688 { 2066 {
1689 if (pri < PRI_MIN) pri = PRI_MIN; 2067 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690 if (pri > PRI_MAX) pri = PRI_MAX; 2068 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691 next_pri = pri + PRI_BIAS; 2069 next_pri = pri;
1692 } 2070 }
1693 OUTPUT: 2071 OUTPUT:
1694 RETVAL 2072 RETVAL
1695 2073
1696void 2074void
1697aioreq_nice (int nice = 0) 2075aioreq_nice (int nice = 0)
1698 CODE: 2076 CODE:
1699 nice = next_pri - nice; 2077 nice = next_pri - nice;
1700 if (nice < PRI_MIN) nice = PRI_MIN; 2078 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701 if (nice > PRI_MAX) nice = PRI_MAX; 2079 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702 next_pri = nice + PRI_BIAS; 2080 next_pri = nice;
1703 2081
1704void 2082void
1705flush () 2083flush ()
1706 PROTOTYPE:
1707 CODE: 2084 CODE:
1708 while (nreqs) 2085 while (eio_nreqs ())
1709 { 2086 {
1710 poll_wait (); 2087 poll_wait ();
1711 poll_cb (); 2088 poll_cb ();
1712 } 2089 }
1713 2090
1714int 2091int
1715poll() 2092poll ()
1716 PROTOTYPE:
1717 CODE: 2093 CODE:
1718 poll_wait (); 2094 poll_wait ();
1719 RETVAL = poll_cb (); 2095 RETVAL = poll_cb ();
1720 OUTPUT: 2096 OUTPUT:
1721 RETVAL 2097 RETVAL
1722 2098
1723int 2099int
1724poll_fileno() 2100poll_fileno ()
1725 PROTOTYPE:
1726 CODE: 2101 CODE:
1727 RETVAL = respipe [0]; 2102 RETVAL = s_epipe_fd (&respipe);
1728 OUTPUT: 2103 OUTPUT:
1729 RETVAL 2104 RETVAL
1730 2105
1731int 2106int
1732poll_cb(...) 2107poll_cb (...)
1733 PROTOTYPE: 2108 PROTOTYPE:
1734 CODE: 2109 CODE:
1735 RETVAL = poll_cb (); 2110 RETVAL = poll_cb ();
1736 OUTPUT: 2111 OUTPUT:
1737 RETVAL 2112 RETVAL
1738 2113
1739void 2114void
1740poll_wait() 2115poll_wait ()
1741 PROTOTYPE:
1742 CODE: 2116 CODE:
1743 poll_wait (); 2117 poll_wait ();
1744 2118
1745void
1746setsig (int signum = SIGIO)
1747 PROTOTYPE: ;$
1748 CODE:
1749{
1750 if (block_sig_level)
1751 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1752
1753 LOCK (reslock);
1754 main_tid = pthread_self ();
1755 main_sig = signum;
1756 UNLOCK (reslock);
1757
1758 if (main_sig && npending)
1759 pthread_kill (main_tid, main_sig);
1760}
1761
1762void
1763aio_block (SV *cb)
1764 PROTOTYPE: &
1765 PPCODE:
1766{
1767 int count;
1768
1769 block_sig ();
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1773 SPAGAIN;
1774 unblock_sig ();
1775
1776 if (SvTRUE (ERRSV))
1777 croak (0);
1778
1779 XSRETURN (count);
1780}
1781
1782int 2119int
1783nreqs() 2120nreqs ()
1784 PROTOTYPE:
1785 CODE: 2121 CODE:
1786 RETVAL = nreqs; 2122 RETVAL = eio_nreqs ();
1787 OUTPUT: 2123 OUTPUT:
1788 RETVAL 2124 RETVAL
1789 2125
1790int 2126int
1791nready() 2127nready ()
1792 PROTOTYPE:
1793 CODE: 2128 CODE:
1794 RETVAL = get_nready (); 2129 RETVAL = eio_nready ();
1795 OUTPUT: 2130 OUTPUT:
1796 RETVAL 2131 RETVAL
1797 2132
1798int 2133int
1799npending() 2134npending ()
1800 PROTOTYPE:
1801 CODE: 2135 CODE:
1802 RETVAL = get_npending (); 2136 RETVAL = eio_npending ();
1803 OUTPUT: 2137 OUTPUT:
1804 RETVAL 2138 RETVAL
1805 2139
1806int 2140int
1807nthreads() 2141nthreads ()
1808 PROTOTYPE:
1809 CODE: 2142 CODE:
1810 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2143 RETVAL = eio_nthreads ();
1811 RETVAL = started;
1812 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813 OUTPUT: 2144 OUTPUT:
1814 RETVAL 2145 RETVAL
1815 2146
2147int
2148fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2149 CODE:
2150 RETVAL = posix_fadvise (fh, offset, length, advice);
2151 OUTPUT:
2152 RETVAL
2153
2154IV
2155sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2156 CODE:
2157 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2158 OUTPUT:
2159 RETVAL
2160
2161void
2162mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2163 PPCODE:
2164 sv_clear_foreign (scalar);
2165{
2166 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2167 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2168 if (addr == (void *)-1)
2169 XSRETURN_NO;
2170
2171 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2172
2173 if (!(prot & PROT_WRITE))
2174 SvREADONLY_on (scalar);
2175
2176 XSRETURN_YES;
2177}
2178
2179void
2180munmap (SV *scalar)
2181 CODE:
2182 sv_clear_foreign (scalar);
2183
2184SV *
2185mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2186 CODE:
2187{
2188 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2189 void *new;
2190
2191 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2192 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2193
2194 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2195
2196 RETVAL = &PL_sv_no;
2197
2198 if (new != (void *)-1)
2199 {
2200 RETVAL = new == (void *)mg->mg_ptr
2201 ? newSVpvn ("0 but true", 10)
2202 : &PL_sv_yes;
2203
2204 mg->mg_ptr = (char *)new;
2205 mg->mg_obj = (SV *)new_length;
2206
2207 SvPVX (scalar) = mg->mg_ptr;
2208 SvCUR_set (scalar, new_length);
2209 }
2210}
2211 OUTPUT:
2212 RETVAL
2213
2214int
2215madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2216 ALIAS:
2217 mprotect = 1
2218 CODE:
2219{
2220 STRLEN svlen;
2221 void *addr = SvPVbyte (scalar, svlen);
2222 STRLEN len = SvUV (length);
2223
2224 if (offset < 0)
2225 offset += svlen;
2226
2227 if (offset < 0 || offset > svlen)
2228 croak ("offset outside of scalar");
2229
2230 if (!SvOK (length) || len + offset > svlen)
2231 len = svlen - offset;
2232
2233 addr = (void *)(((intptr_t)addr) + offset);
2234 eio_page_align (&addr, &len);
2235
2236 switch (ix)
2237 {
2238 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2239 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2240 }
2241}
2242 OUTPUT:
2243 RETVAL
2244
2245int
2246munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2247 CODE:
2248{
2249 STRLEN svlen;
2250 void *addr = SvPVbyte (scalar, svlen);
2251 size_t len = SvUV (length);
2252
2253 if (offset < 0)
2254 offset += svlen;
2255
2256 if (offset < 0 || offset > svlen)
2257 croak ("offset outside of scalar");
2258
2259 if (!SvOK (length) || len + offset > svlen)
2260 len = svlen - offset;
2261
2262 addr = (void *)(((intptr_t)addr) + offset);
2263 eio_page_align (&addr, &len);
2264#if _POSIX_MEMLOCK_RANGE
2265 RETVAL = munlock (addr, len);
2266#else
2267 RETVAL = EIO_ENOSYS ();
2268#endif
2269}
2270 OUTPUT:
2271 RETVAL
2272
2273int
2274mlockall (int flags)
2275 PROTOTYPE: $;
2276 CODE:
2277 RETVAL = eio_mlockall_sync (flags);
2278 OUTPUT:
2279 RETVAL
2280
2281int
2282munlockall ()
2283 CODE:
2284#if _POSIX_MEMLOCK
2285 munlockall ();
2286#else
2287 RETVAL = EIO_ENOSYS ();
2288#endif
2289 OUTPUT:
2290 RETVAL
2291
2292int
2293splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2294 CODE:
2295{
2296#if HAVE_LINUX_SPLICE
2297 loff_t off_in_, off_out_;
2298 RETVAL = splice (
2299 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2300 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2301 length, flags
2302 );
2303#else
2304 RETVAL = EIO_ENOSYS ();
2305#endif
2306}
2307 OUTPUT:
2308 RETVAL
2309
2310int
2311tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2312 CODE:
2313#if HAVE_LINUX_SPLICE
2314 RETVAL = tee (rfh, wfh, length, flags);
2315#else
2316 RETVAL = EIO_ENOSYS ();
2317#endif
2318 OUTPUT:
2319 RETVAL
2320
2321int
2322pipesize (aio_rfd rfh, int new_size = -1)
2323 PROTOTYPE: $;$
2324 CODE:
2325#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2326 if (new_size >= 0)
2327 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2328 else
2329 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2330#else
2331 errno = ENOSYS;
2332 RETVAL = -1;
2333#endif
2334 OUTPUT:
2335 RETVAL
2336
2337void
2338pipe2 (int flags = 0)
2339 PROTOTYPE: ;$
2340 PPCODE:
2341{
2342 int fd[2];
2343 int res;
2344
2345 if (flags)
2346#if HAVE_PIPE2
2347 res = pipe2 (fd, flags);
2348#else
2349 res = (errno = ENOSYS, -1);
2350#endif
2351 else
2352 res = pipe (fd);
2353
2354 if (!res)
2355 {
2356 EXTEND (SP, 2);
2357 PUSHs (newmortalFH (fd[0], O_RDONLY));
2358 PUSHs (newmortalFH (fd[1], O_WRONLY));
2359 }
2360}
2361
2362void
2363eventfd (unsigned int initval = 0, int flags = 0)
2364 PPCODE:
2365{
2366 int fd;
2367#if HAVE_EVENTFD
2368 fd = eventfd (initval, flags);
2369#else
2370 fd = (errno = ENOSYS, -1);
2371#endif
2372
2373 XPUSHs (newmortalFH (fd, O_RDWR));
2374}
2375
2376void
2377timerfd_create (int clockid, int flags = 0)
2378 PPCODE:
2379{
2380 int fd;
2381#if HAVE_TIMERFD
2382 fd = timerfd_create (clockid, flags);
2383#else
2384 fd = (errno = ENOSYS, -1);
2385#endif
2386
2387 XPUSHs (newmortalFH (fd, O_RDWR));
2388}
2389
2390void
2391timerfd_settime (SV *fh, int flags, NV interval, NV value)
2392 PPCODE:
2393{
2394 int fd = s_fileno_croak (fh, 0);
2395#if HAVE_TIMERFD
2396 int res;
2397 struct itimerspec its, ots;
2398
2399 ts_set (&its.it_interval, interval);
2400 ts_set (&its.it_value , value);
2401 res = timerfd_settime (fd, flags, &its, &ots);
2402
2403 if (!res)
2404 {
2405 EXTEND (SP, 2);
2406 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2407 PUSHs (newSVnv (ts_get (&ots.it_value)));
2408 }
2409#else
2410 errno = ENOSYS;
2411#endif
2412}
2413
2414void
2415timerfd_gettime (SV *fh)
2416 PPCODE:
2417{
2418 int fd = s_fileno_croak (fh, 0);
2419#if HAVE_TIMERFD
2420 int res;
2421 struct itimerspec ots;
2422 res = timerfd_gettime (fd, &ots);
2423
2424 if (!res)
2425 {
2426 EXTEND (SP, 2);
2427 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2428 PUSHs (newSVnv (ts_get (&ots.it_value)));
2429 }
2430#else
2431 errno = ENOSYS;
2432#endif
2433}
2434
2435UV
2436get_fdlimit ()
2437 CODE:
2438#if HAVE_RLIMITS
2439 struct rlimit rl;
2440 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2441 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2442#endif
2443 XSRETURN_UNDEF;
2444 OUTPUT:
2445 RETVAL
2446
2447void
2448min_fdlimit (UV limit = 0x7fffffffU)
2449 CODE:
2450{
2451#if HAVE_RLIMITS
2452 struct rlimit rl;
2453 rlim_t orig_rlim_max;
2454 UV bit;
2455
2456 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2457 goto fail;
2458
2459 if (rl.rlim_cur == RLIM_INFINITY)
2460 XSRETURN_YES;
2461
2462 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2463
2464 if (rl.rlim_cur < limit)
2465 {
2466 rl.rlim_cur = limit;
2467
2468 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2469 rl.rlim_max = rl.rlim_cur;
2470 }
2471
2472 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2473 XSRETURN_YES;
2474
2475 if (errno == EPERM)
2476 {
2477 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2478 /* our limit overflows a system-wide limit */
2479 /* try an adaptive algorithm, but do not lower the hardlimit */
2480 rl.rlim_max = 0;
2481 for (bit = 0x40000000U; bit; bit >>= 1)
2482 {
2483 rl.rlim_max |= bit;
2484 rl.rlim_cur = rl.rlim_max;
2485
2486 /* nevr decrease the hard limit */
2487 if (rl.rlim_max < orig_rlim_max)
2488 break;
2489
2490 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2491 rl.rlim_max &= ~bit; /* too high, remove bit again */
2492 }
2493
2494 /* now, raise the soft limit to the max permitted */
2495 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2496 {
2497 rl.rlim_cur = rl.rlim_max;
2498 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2499 errno = EPERM;
2500 }
2501 }
2502#endif
2503 fail:
2504 XSRETURN_UNDEF;
2505}
2506
2507void _on_next_submit (SV *cb)
2508 CODE:
2509 SvREFCNT_dec (on_next_submit);
2510 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2511
1816PROTOTYPES: DISABLE 2512PROTOTYPES: DISABLE
2513
2514MODULE = IO::AIO PACKAGE = IO::AIO::WD
2515
2516BOOT:
2517{
2518 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2519 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2520}
2521
2522void
2523DESTROY (SV *self)
2524 CODE:
2525{
2526 aio_wd wd = SvAIO_WD (self);
2527#if HAVE_AT
2528 {
2529 SV *callback = &PL_sv_undef;
2530 dREQ; /* clobbers next_pri :/ */
2531 next_pri = req->pri; /* restore next_pri */
2532 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2533 req->type = EIO_WD_CLOSE;
2534 req->wd = wd;
2535 REQ_SEND;
2536 }
2537#else
2538 eio_wd_close_sync (wd);
2539#endif
2540}
1817 2541
1818MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2542MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819 2543
1820void 2544void
1821cancel (aio_req_ornot req) 2545cancel (aio_req_ornot req)
1822 CODE: 2546 CODE:
1823 req_cancel (req); 2547 eio_cancel (req);
1824 2548
1825void 2549void
1826cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2550cb (aio_req_ornot req, SV *callback = NO_INIT)
1827 CODE: 2551 PPCODE:
2552{
2553 if (GIMME_V != G_VOID)
2554 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2555
2556 if (items > 1)
2557 {
2558 SV *cb_cv = get_cb (callback);
2559
1828 SvREFCNT_dec (req->callback); 2560 SvREFCNT_dec (req->callback);
1829 req->callback = newSVsv (callback); 2561 req->callback = SvREFCNT_inc (cb_cv);
2562 }
2563}
1830 2564
1831MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2565MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832 2566
1833void 2567void
1834add (aio_req grp, ...) 2568add (aio_req grp, ...)
1835 PPCODE: 2569 PPCODE:
1836{ 2570{
1837 int i; 2571 int i;
1838 aio_req req;
1839
1840 if (main_sig && !block_sig_level)
1841 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1842 2572
1843 if (grp->int1 == 2) 2573 if (grp->int1 == 2)
1844 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2574 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845 2575
1846 for (i = 1; i < items; ++i ) 2576 for (i = 1; i < items; ++i )
1847 { 2577 {
2578 aio_req req;
2579
1848 if (GIMME_V != G_VOID) 2580 if (GIMME_V != G_VOID)
1849 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2581 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850 2582
1851 req = SvAIO_REQ (ST (i)); 2583 req = SvAIO_REQ (ST (i));
1852 2584
1853 if (req) 2585 if (req)
1854 { 2586 eio_grp_add (grp, req);
1855 ++grp->size;
1856 req->grp = grp;
1857
1858 req->grp_prev = 0;
1859 req->grp_next = grp->grp_first;
1860
1861 if (grp->grp_first)
1862 grp->grp_first->grp_prev = req;
1863
1864 grp->grp_first = req;
1865 }
1866 } 2587 }
1867} 2588}
1868 2589
1869void 2590void
1870cancel_subs (aio_req_ornot req) 2591cancel_subs (aio_req_ornot req)
… …
1879 AV *av; 2600 AV *av;
1880 2601
1881 grp->errorno = errno; 2602 grp->errorno = errno;
1882 2603
1883 av = newAV (); 2604 av = newAV ();
2605 av_extend (av, items - 1);
1884 2606
1885 for (i = 1; i < items; ++i ) 2607 for (i = 1; i < items; ++i )
1886 av_push (av, newSVsv (ST (i))); 2608 av_push (av, newSVsv (ST (i)));
1887 2609
1888 SvREFCNT_dec (grp->sv1); 2610 SvREFCNT_dec (grp->sv1);
… …
1895 grp->errorno = errorno; 2617 grp->errorno = errorno;
1896 2618
1897void 2619void
1898limit (aio_req grp, int limit) 2620limit (aio_req grp, int limit)
1899 CODE: 2621 CODE:
1900 grp->int2 = limit; 2622 eio_grp_limit (grp, limit);
1901 aio_grp_feed (grp);
1902 2623
1903void 2624void
1904feed (aio_req grp, SV *callback=&PL_sv_undef) 2625feed (aio_req grp, SV *callback = &PL_sv_undef)
1905 CODE: 2626 CODE:
1906{ 2627{
1907 SvREFCNT_dec (grp->sv2); 2628 SvREFCNT_dec (grp->sv2);
1908 grp->sv2 = newSVsv (callback); 2629 grp->sv2 = newSVsv (callback);
2630 grp->feed = aio_grp_feed;
1909 2631
1910 if (grp->int2 <= 0) 2632 if (grp->int2 <= 0)
1911 grp->int2 = 2; 2633 grp->int2 = 2;
1912 2634
1913 aio_grp_feed (grp); 2635 eio_grp_limit (grp, grp->int2);
1914} 2636}
1915 2637

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