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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.273 by root, Mon Mar 4 10:28:38 2019 UTC

1#include "xthread.h" 1#include "libeio/xthread.h"
2 2
3#include <errno.h> 3#include <errno.h>
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8#include "perliol.h"
8 9
9#include "autoconf/config.h" 10#if !defined mg_findext
11# define mg_findext(sv,type,vtbl) mg_find (sv, type)
12#endif
10 13
11#include <stddef.h> 14#include <stddef.h>
12#include <stdlib.h> 15#include <stdlib.h>
13#include <errno.h> 16#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 17#include <sys/types.h>
18#include <sys/socket.h>
17#include <sys/stat.h> 19#include <sys/stat.h>
18#include <limits.h> 20#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 21#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 22#include <sched.h>
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80 #undef utime
81
82 #define EIO_STRUCT_STAT struct _stati64
83 #define EIO_STRUCT_STATI64
84
85#else
86
87 #include <sys/time.h>
88 #include <sys/select.h>
89 #include <unistd.h>
23#include <utime.h> 90 #include <utime.h>
91 #include <signal.h>
24 92
25#if HAVE_SENDFILE 93 #define EIO_STRUCT_STAT Stat_t
26# if __linux 94
27# include <sys/sendfile.h> 95#endif
28# elif __freebsd 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
29# 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
30# include <sys/uio.h> 119# include <sys/mman.h>
31# elif __hpux 120#endif
32# include <sys/socket.h> 121
33# 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
34# 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
35# else 203# else
36# error sendfile support requested but not available 204# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37# endif 205# endif
38#endif 206#endif
39 207
40/* number of seconds after which idle threads exit */ 208#ifndef makedev
41#define IDLE_TIMEOUT 10 209# define makedev(maj,min) (((maj) << 8) | (min))
42
43/* used for struct dirent, AIX doesn't provide it */
44#ifndef NAME_MAX
45# define NAME_MAX 4096
46#endif 210#endif
47 211#ifndef major
48/* buffer size for various temporary buffers */ 212# define major(dev) ((dev) >> 8)
49#define AIO_BUFSIZE 65536
50
51/* use NV for 32 bit perls as it allows larger offsets */
52#if IVSIZE >= 8
53# define SvVAL64 SvIV
54#else
55# define SvVAL64 SvNV
56#endif 213#endif
214#ifndef minor
215# define minor(dev) ((dev) & 0xff)
216#endif
57 217
58#define dBUF \ 218/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
59 char *aio_buf; \ 219#ifdef __sun
60 LOCK (wrklock); \ 220# undef PAGESIZE
61 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 221#endif
62 UNLOCK (wrklock); \ 222
63 if (!aio_buf) \ 223#if PAGESIZE <= 0
224# define PAGESIZE sysconf (_SC_PAGESIZE)
225#endif
226
227/*****************************************************************************/
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
64 return -1; 262 return 0;
263}
65 264
66typedef SV SV8; /* byte-sv, used for argument-checking */ 265static MGVTBL mmap_vtbl = {
67 266 0, 0, 0, 0, mmap_free
68enum {
69 REQ_QUIT,
70 REQ_OPEN, REQ_CLOSE,
71 REQ_READ, REQ_WRITE,
72 REQ_READAHEAD, REQ_SENDFILE,
73 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74 REQ_UTIME, REQ_FUTIME,
75 REQ_CHMOD, REQ_FCHMOD,
76 REQ_CHOWN, REQ_FCHOWN,
77 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79 REQ_MKNOD, REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81 REQ_GROUP, REQ_NOP,
82 REQ_BUSY,
83}; 267};
84 268
85#define AIO_REQ_KLASS "IO::AIO::REQ" 269static int ecb_cold
86#define AIO_GRP_KLASS "IO::AIO::GRP" 270sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88typedef struct aio_cb
89{ 271{
90 struct aio_cb *volatile next; 272 free (mg->mg_ptr);
273 mg->mg_obj = 0; /* just in case */
91 274
92 SV *callback; 275 SvREADONLY_off (sv);
93 SV *sv1, *sv2;
94 void *ptr1, *ptr2;
95 off_t offs;
96 size_t size;
97 ssize_t result;
98 double nv1, nv2;
99 276
100 STRLEN stroffset; 277 if (SvPVX (sv) != mg->mg_ptr)
101 int type; 278 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102 int int1, int2, int3;
103 int errorno;
104 mode_t mode; /* open */
105 279
106 unsigned char flags; 280 SvCUR_set (sv, 0);
107 unsigned char pri; 281 SvPVX (sv) = 0;
282 SvOK_off (sv);
108 283
109 SV *self; /* the perl counterpart of this request, if any */ 284 return 0;
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 285}
111} aio_cb;
112 286
113enum { 287static MGVTBL sysfree_vtbl = {
114 FLAG_CANCELLED = 0x01, /* request was cancelled */ 288 0, 0, 0, 0, sysfree_free
115 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117}; 289};
118 290
119typedef aio_cb *aio_req; 291/*****************************************************************************/
120typedef aio_cb *aio_req_ornot;
121 292
122enum { 293/* helper: set scalar to foreign ptr with custom free */
123 PRI_MIN = -4, 294static void
124 PRI_MAX = 4, 295sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
125
126 DEFAULT_PRI = 0,
127 PRI_BIAS = -PRI_MIN,
128 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129};
130
131#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133static unsigned int max_poll_time = 0;
134static unsigned int max_poll_reqs = 0;
135
136/* calculcate time difference in ~1/AIO_TICKS of a second */
137static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138{ 296{
139 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 297 sv_force_normal (sv);
140 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
141}
142 298
143static thread_t main_tid; 299 /* we store the length in mg_obj, as namlen is I32 :/ */
144static int main_sig; 300 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
145static int block_sig_level; 301 ->mg_obj = (SV *)length;
146 302
147void block_sig () 303 SvUPGRADE (sv, SVt_PV); /* nop... */
148{
149 sigset_t ss;
150 304
151 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)
152 return; 351 return;
153 352
154 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)
155 return; 361 return;
156 362
157 sigemptyset (&ss); 363 if (req->int3 >= 0 /* not autosizing */
158 sigaddset (&ss, main_sig); 364 || !fiemap->fm_mapped_extents /* no more extents */
159 pthread_sigmask (SIG_BLOCK, &ss, 0); 365 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160} 366 goto done;
161 367
162void unblock_sig () 368 /* else we have to loop -
163{ 369 * it would be tempting (actually I tried that first) to just query the
164 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 */
165 374
166 if (--block_sig_level) 375 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167 return;
168 376
169 if (!main_sig) 377 for (;;)
170 return;
171
172 sigemptyset (&ss);
173 sigaddset (&ss, main_sig);
174 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175}
176
177static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179static unsigned int started, idle, wanted;
180
181/* worker threads management */
182static mutex_t wrklock = MUTEX_INIT;
183
184typedef struct worker {
185 /* locked by wrklock */
186 struct worker *prev, *next;
187
188 thread_t tid;
189
190 /* locked by reslock, reqlock or wrklock */
191 aio_req req; /* currently processed request */
192 void *dbuf;
193 DIR *dirp;
194} worker;
195
196static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198static void worker_clear (worker *wrk)
199{
200 if (wrk->dirp)
201 { 378 {
202 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) */
203 wrk->dirp = 0; 380 char scratch[3072];
204 } 381 struct fiemap *incmap = (struct fiemap *)scratch;
205 382
206 if (wrk->dbuf) 383 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207 { 384 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208 free (wrk->dbuf); 385 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209 wrk->dbuf = 0; 386 incmap->fm_flags = fiemap->fm_flags;
210 } 387 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211}
212 388
213static void worker_free (worker *wrk) 389 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
214{
215 wrk->next->prev = wrk->prev;
216 wrk->prev->next = wrk->next;
217
218 free (wrk);
219}
220
221static volatile unsigned int nreqs, nready, npending;
222static volatile unsigned int max_idle = 4;
223static volatile unsigned int max_outstanding = 0xffffffff;
224static int respipe [2];
225
226static mutex_t reslock = MUTEX_INIT;
227static mutex_t reqlock = MUTEX_INIT;
228static cond_t reqwait = COND_INIT;
229
230#if WORDACCESS_UNSAFE
231
232static unsigned int get_nready ()
233{
234 unsigned int retval;
235
236 LOCK (reqlock);
237 retval = nready;
238 UNLOCK (reqlock);
239
240 return retval;
241}
242
243static unsigned int get_npending ()
244{
245 unsigned int retval;
246
247 LOCK (reslock);
248 retval = npending;
249 UNLOCK (reslock);
250
251 return retval;
252}
253
254static unsigned int get_nthreads ()
255{
256 unsigned int retval;
257
258 LOCK (wrklock);
259 retval = started;
260 UNLOCK (wrklock);
261
262 return retval;
263}
264
265#else
266
267# define get_nready() nready
268# define get_npending() npending
269# define get_nthreads() started
270
271#endif
272
273/*
274 * a somewhat faster data structure might be nice, but
275 * with 8 priorities this actually needs <20 insns
276 * per shift, the most expensive operation.
277 */
278typedef struct {
279 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280 int size;
281} reqq;
282
283static reqq req_queue;
284static reqq res_queue;
285
286int reqq_push (reqq *q, aio_req req)
287{
288 int pri = req->pri;
289 req->next = 0;
290
291 if (q->qe[pri])
292 {
293 q->qe[pri]->next = req;
294 q->qe[pri] = req;
295 }
296 else
297 q->qe[pri] = q->qs[pri] = req;
298
299 return q->size++;
300}
301
302aio_req reqq_shift (reqq *q)
303{
304 int pri;
305
306 if (!q->size)
307 return 0; 390 return;
308 391
309 --q->size; 392 if (!incmap->fm_mapped_extents)
393 goto done;
310 394
311 for (pri = NUM_PRI; pri--; ) 395 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312 { 396 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313 aio_req req = q->qs[pri]; 397 errno = ENOMEM;
314
315 if (req) 398 if (!fiemap)
399 return;
400
401 req->ptr1 = fiemap;
402
403 for (count = 0; count < incmap->fm_mapped_extents; ++count)
316 { 404 {
317 if (!(q->qs[pri] = req->next)) 405 struct fiemap_extent *e = incmap->fm_extents + count;
318 q->qe[pri] = 0;
319 406
320 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
321 } 415 }
322 } 416 }
323 417
324 abort (); 418done:
325} 419 req->result = 0;
326 420
327static int poll_cb (); 421#else
328static 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
329static void req_destroy (aio_req req); 444static void req_destroy (aio_req req);
330static void req_cancel (aio_req req); 445static void req_cancel (aio_req req);
331 446
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
332/* must be called at most once */ 461/* must be called at most once */
333static SV *req_sv (aio_req req, const char *klass) 462static SV *
463req_sv (aio_req req, HV *stash)
334{ 464{
335 if (!req->self) 465 if (!req->self)
336 { 466 {
337 req->self = (SV *)newHV (); 467 req->self = (SV *)newHV ();
338 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 468 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339 } 469 }
340 470
341 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 471 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342} 472}
343 473
344static 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)
345{ 482{
346 MAGIC *mg; 483 MAGIC *mg;
347 484
348 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")))
349 croak ("object of class " AIO_REQ_KLASS " expected"); 490 croak ("object of class IO::AIO::REQ expected");
350 491
351 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 492 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352 493
353 return mg ? (aio_req)mg->mg_ptr : 0; 494 return mg ? (aio_req)mg->mg_ptr : 0;
354} 495}
355 496
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
356static void aio_grp_feed (aio_req grp) 534aio_grp_feed (aio_req grp)
357{ 535{
358 block_sig (); 536 if (grp->sv2 && SvOK (grp->sv2))
359
360 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361 { 537 {
362 int old_len = grp->size;
363
364 if (grp->sv2 && SvOK (grp->sv2))
365 {
366 dSP; 538 dSP;
367 539
368 ENTER; 540 ENTER;
369 SAVETMPS; 541 SAVETMPS;
370 PUSHMARK (SP); 542 PUSHMARK (SP);
371 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 543 XPUSHs (req_sv (grp, aio_grp_stash));
372 PUTBACK; 544 PUTBACK;
373 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 545 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374 SPAGAIN; 546 SPAGAIN;
375 FREETMPS; 547 FREETMPS;
376 LEAVE; 548 LEAVE;
377 }
378
379 /* stop if no progress has been made */
380 if (old_len == grp->size)
381 {
382 SvREFCNT_dec (grp->sv2);
383 grp->sv2 = 0;
384 break;
385 }
386 } 549 }
387
388 unblock_sig ();
389} 550}
390 551
391static void aio_grp_dec (aio_req grp) 552static void
553req_submit (eio_req *req)
392{ 554{
393 --grp->size; 555 eio_submit (req);
394 556
395 /* call feeder, if applicable */ 557 if (expect_false (on_next_submit))
396 aio_grp_feed (grp);
397
398 /* finish, if done */
399 if (!grp->size && grp->int1)
400 { 558 {
401 block_sig (); 559 dSP;
560 SV *cb = sv_2mortal (on_next_submit);
402 561
403 if (!req_invoke (grp)) 562 on_next_submit = 0;
404 {
405 req_destroy (grp);
406 unblock_sig ();
407 croak (0);
408 }
409 563
410 req_destroy (grp); 564 PUSHMARK (SP);
411 unblock_sig (); 565 PUTBACK;
566 call_sv (cb, G_DISCARD | G_EVAL);
412 } 567 }
413} 568}
414 569
570static int
415static int req_invoke (aio_req req) 571req_invoke (eio_req *req)
416{ 572{
417 dSP;
418
419 if (req->flags & FLAG_SV2_RO_OFF) 573 if (req->flags & FLAG_SV2_RO_OFF)
420 SvREADONLY_off (req->sv2); 574 SvREADONLY_off (req->sv2);
421 575
422 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 576 if (!EIO_CANCELLED (req) && req->callback)
423 { 577 {
578 dSP;
579 static SV *sv_result_cache; /* caches the result integer SV */
580 SV *sv_result;
581
424 ENTER; 582 ENTER;
425 SAVETMPS; 583 SAVETMPS;
426 PUSHMARK (SP); 584 PUSHMARK (SP);
427 EXTEND (SP, 1); 585 EXTEND (SP, 1);
428 586
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
429 switch (req->type) 600 switch (req->type)
430 { 601 {
602 case EIO_WD_OPEN:
603 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
604 break;
605
431 case REQ_READDIR: 606 case EIO_READDIR:
432 { 607 {
433 SV *rv = &PL_sv_undef; 608 SV *rv = &PL_sv_undef;
434 609
435 if (req->result >= 0) 610 if (req->result >= 0)
436 { 611 {
437 int i; 612 int i;
438 char *buf = req->ptr2; 613 char *names = (char *)req->ptr2;
614 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439 AV *av = newAV (); 615 AV *av = newAV ();
440 616
441 av_extend (av, req->result - 1); 617 av_extend (av, req->result - 1);
442 618
443 for (i = 0; i < req->result; ++i) 619 for (i = 0; i < req->result; ++i)
444 { 620 {
445 SV *sv = newSVpv (buf, 0); 621 if (req->int1 & EIO_READDIR_DENTS)
622 {
623 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446 624
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
447 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);
448 buf += SvCUR (sv) + 1; 653 names += SvCUR (name) + 1;
654 }
449 } 655 }
450 656
451 rv = sv_2mortal (newRV_noinc ((SV *)av)); 657 rv = sv_2mortal (newRV_noinc ((SV *)av));
452 } 658 }
453 659
454 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))));
455 } 664 }
456 break; 665 break;
457 666
458 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:
459 { 673 {
460 /* convert fd to fh */ 674 SV *rv = &PL_sv_undef;
461 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));
462 686
463 PUSHs (sv_2mortal (newSViv (req->result))); 687 rv = sv_2mortal (newRV_noinc ((SV *)hv));
464 PUTBACK;
465 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466 SPAGAIN;
467 688
468 fh = POPs; 689 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469 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
470 XPUSHs (fh); 703 PUSHs (rv);
471 } 704 }
705
472 break; 706 break;
473 707
474 case REQ_GROUP: 708 case EIO_GROUP:
475 req->int1 = 2; /* mark group as finished */ 709 req->int1 = 2; /* mark group as finished */
476 710
477 if (req->sv1) 711 if (req->sv1)
478 { 712 {
479 int i; 713 int i;
… …
483 for (i = 0; i <= AvFILL (av); ++i) 717 for (i = 0; i <= AvFILL (av); ++i)
484 PUSHs (*av_fetch (av, i, 0)); 718 PUSHs (*av_fetch (av, i, 0));
485 } 719 }
486 break; 720 break;
487 721
488 case REQ_NOP: 722 case EIO_NOP:
489 case REQ_BUSY: 723 case EIO_BUSY:
490 break; 724 break;
491 725
492 case REQ_READLINK: 726 case EIO_READLINK:
727 case EIO_REALPATH:
493 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)
494 { 784 {
495 SvCUR_set (req->sv2, req->result); 785#if HAVE_FIEMAP
496 *SvEND (req->sv2) = 0;
497 PUSHs (req->sv2); 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
498 } 817 }
818 else
819 PUSHs (sv_result);
499 break; 820 break;
500 821
501 case REQ_STAT: 822#if 0
502 case REQ_LSTAT: 823 case EIO_CLOSE:
503 case REQ_FSTAT: 824 PerlIOUnix_refcnt_dec (req->int1);
504 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
505 PL_laststatval = req->result;
506 PL_statcache = *(Stat_t *)(req->ptr2);
507 PUSHs (sv_2mortal (newSViv (req->result)));
508 break; 825 break;
826#endif
509 827
510 case REQ_READ: 828 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
511 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); 829 if (req->result > 0)
512 *SvEND (req->sv2) = 0; 830 SvIV_set (sv_result, 0);
513 PUSHs (sv_2mortal (newSViv (req->result))); 831 /* FALLTHROUGH */
514 break;
515 832
516 default: 833 default:
517 PUSHs (sv_2mortal (newSViv (req->result))); 834 PUSHs (sv_result);
518 break; 835 break;
519 } 836 }
520 837
521 errno = req->errorno; 838 errno = req->errorno;
522 839
523 PUTBACK; 840 PUTBACK;
524 call_sv (req->callback, G_VOID | G_EVAL); 841 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525 SPAGAIN; 842 SPAGAIN;
843
844 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
845 SvREFCNT_dec (sv_result);
846 else
847 sv_result_cache = sv_result;
526 848
527 FREETMPS; 849 FREETMPS;
528 LEAVE; 850 LEAVE;
851
852 PUTBACK;
529 } 853 }
530 854
531 if (req->grp)
532 {
533 aio_req grp = req->grp;
534
535 /* unlink request */
536 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539 if (grp->grp_first == req)
540 grp->grp_first = req->grp_next;
541
542 aio_grp_dec (grp);
543 }
544
545 return !SvTRUE (ERRSV); 855 return !!SvTRUE (ERRSV);
546} 856}
547 857
858static void
548static void req_destroy (aio_req req) 859req_destroy (aio_req req)
549{ 860{
550 if (req->self) 861 if (req->self)
551 { 862 {
552 sv_unmagic (req->self, PERL_MAGIC_ext); 863 sv_unmagic (req->self, PERL_MAGIC_ext);
553 SvREFCNT_dec (req->self); 864 SvREFCNT_dec (req->self);
554 } 865 }
555 866
556 SvREFCNT_dec (req->sv1); 867 SvREFCNT_dec (req->sv1);
557 SvREFCNT_dec (req->sv2); 868 SvREFCNT_dec (req->sv2);
869 SvREFCNT_dec (req->sv3);
870 SvREFCNT_dec (req->sv4);
558 SvREFCNT_dec (req->callback); 871 SvREFCNT_dec (req->callback);
559 872
560 if (req->flags & FLAG_PTR2_FREE)
561 free (req->ptr2);
562
563 Safefree (req); 873 free (req);
564} 874}
565 875
876static void
566static void req_cancel_subs (aio_req grp) 877req_cancel_subs (aio_req grp)
567{ 878{
568 aio_req sub;
569
570 if (grp->type != REQ_GROUP) 879 if (grp->type != EIO_GROUP)
571 return; 880 return;
572 881
573 SvREFCNT_dec (grp->sv2); 882 SvREFCNT_dec (grp->sv2);
574 grp->sv2 = 0; 883 grp->sv2 = 0;
575 884
576 for (sub = grp->grp_first; sub; sub = sub->grp_next) 885 eio_grp_cancel (grp);
577 req_cancel (sub);
578} 886}
579 887
580static void req_cancel (aio_req req) 888static void ecb_cold
889create_respipe (void)
581{ 890{
582 req->flags |= FLAG_CANCELLED; 891 if (s_epipe_renew (&respipe))
583 892 croak ("IO::AIO: unable to initialize result pipe");
584 req_cancel_subs (req);
585} 893}
586 894
587static void *aio_proc (void *arg); 895static void
588 896poll_wait (void)
589static void start_thread (void)
590{ 897{
591 worker *wrk = calloc (1, sizeof (worker));
592
593 if (!wrk)
594 croak ("unable to allocate worker thread data");
595
596 LOCK (wrklock);
597
598 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599 {
600 wrk->prev = &wrk_first;
601 wrk->next = wrk_first.next;
602 wrk_first.next->prev = wrk;
603 wrk_first.next = wrk;
604 ++started;
605 }
606 else
607 free (wrk);
608
609 UNLOCK (wrklock);
610}
611
612static void maybe_start_thread ()
613{
614 if (get_nthreads () >= wanted)
615 return;
616
617 /* todo: maybe use idle here, but might be less exact */
618 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619 return;
620
621 start_thread ();
622}
623
624static void req_send (aio_req req)
625{
626 block_sig ();
627
628 ++nreqs;
629
630 LOCK (reqlock);
631 ++nready;
632 reqq_push (&req_queue, req);
633 COND_SIGNAL (reqwait);
634 UNLOCK (reqlock);
635
636 unblock_sig ();
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 COND_SIGNAL (reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 898 while (eio_nreqs ())
687 { 899 {
688 int size; 900 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 901
902 X_LOCK (EIO_POOL->reslock);
690 size = res_queue.size; 903 size = EIO_POOL->res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 904 X_UNLOCK (EIO_POOL->reslock);
692 905
693 if (size) 906 if (size)
694 return; 907 return;
695 908
696 maybe_start_thread (); 909 etp_maybe_start_thread (EIO_POOL);
697 910
698 FD_ZERO(&rfd); 911 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 912 }
703} 913}
704 914
705static int poll_cb () 915static int
916poll_cb (void)
706{ 917{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 block_sig ();
718
719 for (;;) 918 for (;;)
720 { 919 {
721 for (;;) 920 int res = eio_poll ();
921
922 if (res > 0)
923 croak (0);
924
925 if (!max_outstanding || max_outstanding > eio_nreqs ())
926 return res;
927
928 poll_wait ();
929 }
930}
931
932static void ecb_cold
933reinit (void)
934{
935 create_respipe ();
936
937 if (eio_init (want_poll, done_poll) < 0)
938 croak ("IO::AIO: unable to initialise eio library");
939}
940
941/*****************************************************************************/
942
943static SV *
944get_cb (SV *cb_sv)
945{
946 SvGETMAGIC (cb_sv);
947 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
948}
949
950static aio_req ecb_noinline
951dreq (SV *callback)
952{
953 SV *cb_cv;
954 aio_req req;
955 int req_pri = next_pri;
956 next_pri = EIO_PRI_DEFAULT;
957
958 cb_cv = get_cb (callback);
959
960 req = calloc (sizeof (*req), 1);
961 if (!req)
962 croak ("out of memory during eio_req allocation");
963
964 req->callback = SvREFCNT_inc (cb_cv);
965 req->pri = req_pri;
966
967 return req;
968}
969
970#define dREQ \
971 aio_req req = dreq (callback); \
972
973#define REQ_SEND \
974 PUTBACK; \
975 req_submit (req); \
976 SPAGAIN; \
977 \
978 if (GIMME_V != G_VOID) \
979 XPUSHs (req_sv (req, aio_req_stash));
980
981ecb_inline void
982req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
983{
984 if (expect_false (SvROK (path)))
985 {
986 SV *rv = SvRV (path);
987 SV *wdob;
988
989 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722 { 990 {
723 maybe_start_thread (); 991 path = AvARRAY (rv)[1];
992 wdob = AvARRAY (rv)[0];
724 993
725 LOCK (reslock); 994 if (SvOK (wdob))
726 req = reqq_shift (&res_queue);
727
728 if (req)
729 { 995 {
730 --npending; 996 *wd = SvAIO_WD (wdob);
731 997 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
732 if (!res_queue.size)
733 {
734 /* read any signals sent by the worker threads */
735 char buf [4];
736 while (read (respipe [0], buf, 4) == 4)
737 ;
738 }
739 }
740
741 UNLOCK (reslock);
742
743 if (!req)
744 break;
745
746 --nreqs;
747
748 if (req->type == REQ_GROUP && req->size)
749 {
750 req->int1 = 1; /* mark request as delayed */
751 continue;
752 } 998 }
753 else 999 else
754 { 1000 *wd = EIO_INVALID_WD;
755 if (!req_invoke (req))
756 {
757 req_destroy (req);
758 unblock_sig ();
759 croak (0);
760 }
761
762 count++;
763 }
764
765 req_destroy (req);
766
767 if (maxreqs && !--maxreqs)
768 break;
769
770 if (max_poll_time)
771 {
772 gettimeofday (&tv_now, 0);
773
774 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775 break;
776 }
777 } 1001 }
1002 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
1003 {
1004 *wd = (aio_wd)(long)SvIVX (rv);
1005 *wdsv = SvREFCNT_inc_NN (rv);
1006 *ptr = ".";
1007 return; /* path set to "." */
1008 }
1009 else
1010 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1011 }
778 1012
779 if (nreqs <= max_outstanding) 1013 *pathsv = newSVsv (path);
1014 *ptr = SvPVbyte_nolen (*pathsv);
1015}
1016
1017static void ecb_noinline
1018req_set_path1 (aio_req req, SV *path)
1019{
1020 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1021}
1022
1023static void ecb_noinline
1024req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1025{
1026 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1027
1028 switch (SvTYPE (rv))
1029 {
1030 case SVt_PVIO:
1031 case SVt_PVLV:
1032 case SVt_PVGV:
1033 req->type = type_fh;
1034 req->sv1 = newSVsv (fh_or_path);
1035 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780 break; 1036 break;
781 1037
782 poll_wait (); 1038 default:
783 1039 req->type = type_path;
784 ++maxreqs; 1040 req_set_path1 (req, fh_or_path);
1041 break;
785 } 1042 }
786
787 unblock_sig ();
788 return count;
789}
790
791static void create_pipe ()
792{
793 if (pipe (respipe))
794 croak ("unable to initialize result pipe");
795
796 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797 croak ("cannot set result pipe to nonblocking mode");
798
799 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800 croak ("cannot set result pipe to nonblocking mode");
801} 1043}
802 1044
803/*****************************************************************************/ 1045/*****************************************************************************/
804/* work around various missing functions */
805 1046
806#if !HAVE_PREADWRITE 1047static void
807# define pread aio_pread 1048ts_set (struct timespec *ts, NV value)
808# define pwrite aio_pwrite
809
810/*
811 * make our pread/pwrite safe against themselves, but not against
812 * normal read/write by using a mutex. slows down execution a lot,
813 * but that's your problem, not mine.
814 */
815static mutex_t preadwritelock = MUTEX_INIT;
816
817static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818{ 1049{
819 ssize_t res; 1050 ts->tv_sec = value;
820 off_t ooffset; 1051 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
821
822 LOCK (preadwritelock);
823 ooffset = lseek (fd, 0, SEEK_CUR);
824 lseek (fd, offset, SEEK_SET);
825 res = read (fd, buf, count);
826 lseek (fd, ooffset, SEEK_SET);
827 UNLOCK (preadwritelock);
828
829 return res;
830} 1052}
831 1053
832static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1054static NV
1055ts_get (const struct timespec *ts)
833{ 1056{
834 ssize_t res; 1057 return ts->tv_sec + ts->tv_nsec * 1e-9;
835 off_t ooffset;
836
837 LOCK (preadwritelock);
838 ooffset = lseek (fd, 0, SEEK_CUR);
839 lseek (fd, offset, SEEK_SET);
840 res = write (fd, buf, count);
841 lseek (fd, offset, SEEK_SET);
842 UNLOCK (preadwritelock);
843
844 return res;
845} 1058}
846#endif
847 1059
848#ifndef HAVE_FUTIMES 1060/*****************************************************************************/
849 1061
850# define utimes(path,times) aio_utimes (path, times) 1062XS(boot_IO__AIO) ecb_cold;
851# define futimes(fd,times) aio_futimes (fd, times)
852 1063
853int aio_utimes (const char *filename, const struct timeval times[2]) 1064MODULE = IO::AIO PACKAGE = IO::AIO
854{
855 if (times)
856 {
857 struct utimbuf buf;
858 1065
859 buf.actime = times[0].tv_sec; 1066PROTOTYPES: ENABLE
860 buf.modtime = times[1].tv_sec;
861 1067
862 return utime (filename, &buf); 1068BOOT:
863 }
864 else
865 return utime (filename, 0);
866}
867
868int aio_futimes (int fd, const struct timeval tv[2])
869{ 1069{
870 errno = ENOSYS; 1070 static const struct {
871 return -1; 1071 const char *name;
872} 1072 IV iv;
1073 } *civ, const_iv[] = {
1074# define const_niv(name, value) { # name, (IV) value },
1075# define const_iv(name) { # name, (IV) name },
1076# define const_eio(name) { # name, (IV) EIO_ ## name },
873 1077
874#endif 1078 /* you have to re-run ./gendef0 after adding/removing any constants here */
1079 /* the first block can be undef if missing */
1080 const_iv (ENOSYS)
1081 const_iv (EXDEV)
1082 const_iv (EBADR)
875 1083
876#if !HAVE_FDATASYNC 1084 /* for lseek */
877# define fdatasync fsync 1085 const_iv (SEEK_DATA)
878#endif 1086 const_iv (SEEK_HOLE)
879 1087
880#if !HAVE_READAHEAD 1088 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
881# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) 1089 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1090 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1091 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1092 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1093 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
882 1094
883static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1095 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
884{ 1096 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
885 dBUF; 1097 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1098 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1099 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
886 1100
887 while (count > 0) 1101 /* the second block will be 0 when missing */
888 { 1102 const_iv (O_ACCMODE)
889 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890 1103
891 pread (fd, aio_buf, len, offset); 1104 const_iv (O_RDONLY)
892 offset += len; 1105 const_iv (O_WRONLY)
893 count -= len; 1106 const_iv (O_RDWR)
894 } 1107 const_iv (O_CREAT)
1108 const_iv (O_TRUNC)
1109 const_iv (O_EXCL)
1110 const_iv (O_APPEND)
895 1111
896 errno = 0; 1112 const_iv (O_ASYNC)
897} 1113 const_iv (O_DIRECT)
1114 const_iv (O_NOATIME)
898 1115
899#endif 1116 const_iv (O_CLOEXEC)
1117 const_iv (O_NOCTTY)
1118 const_iv (O_NOFOLLOW)
1119 const_iv (O_NONBLOCK)
1120 const_iv (O_EXEC)
1121 const_iv (O_SEARCH)
1122 const_iv (O_DIRECTORY)
1123 const_iv (O_DSYNC)
1124 const_iv (O_RSYNC)
1125 const_iv (O_SYNC)
1126 const_iv (O_PATH)
1127 const_iv (O_TMPFILE)
1128 const_iv (O_TTY_INIT)
900 1129
901#if !HAVE_READDIR_R 1130 const_iv (S_IFIFO)
902# define readdir_r aio_readdir_r 1131 const_iv (S_IFCHR)
1132 const_iv (S_IFBLK)
1133 const_iv (S_IFLNK)
1134 const_iv (S_IFREG)
1135 const_iv (S_IFDIR)
1136 const_iv (S_IFWHT)
1137 const_iv (S_IFSOCK)
1138 const_iv (S_IFMT)
903 1139
904static mutex_t readdirlock = MUTEX_INIT; 1140 const_iv (ST_RDONLY)
905 1141 const_iv (ST_NOSUID)
906static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 1142 const_iv (ST_NODEV)
907{ 1143 const_iv (ST_NOEXEC)
908 struct dirent *e; 1144 const_iv (ST_SYNCHRONOUS)
909 int errorno; 1145 const_iv (ST_MANDLOCK)
1146 const_iv (ST_WRITE)
1147 const_iv (ST_APPEND)
1148 const_iv (ST_IMMUTABLE)
1149 const_iv (ST_NOATIME)
1150 const_iv (ST_NODIRATIME)
1151 const_iv (ST_RELATIME)
910 1152
911 LOCK (readdirlock); 1153 const_iv (PROT_NONE)
1154 const_iv (PROT_EXEC)
1155 const_iv (PROT_READ)
1156 const_iv (PROT_WRITE)
912 1157
913 e = readdir (dirp); 1158 const_iv (MAP_PRIVATE)
914 errorno = errno; 1159 const_iv (MAP_SHARED)
1160 const_iv (MAP_FIXED)
1161 const_iv (MAP_ANONYMOUS)
915 1162
916 if (e) 1163 /* linuxish */
917 { 1164 const_iv (MAP_LOCKED)
918 *res = ent; 1165 const_iv (MAP_NORESERVE)
919 strcpy (ent->d_name, e->d_name); 1166 const_iv (MAP_POPULATE)
920 } 1167 const_iv (MAP_NONBLOCK)
921 else 1168 const_iv (MAP_GROWSDOWN)
922 *res = 0; 1169 const_iv (MAP_32BIT)
1170 const_iv (MAP_HUGETLB)
1171 const_iv (MAP_STACK)
923 1172
924 UNLOCK (readdirlock); 1173 const_iv (MREMAP_MAYMOVE)
1174 const_iv (MREMAP_FIXED)
925 1175
926 errno = errorno; 1176 const_iv (F_DUPFD_CLOEXEC)
927 return e ? 0 : -1;
928}
929#endif
930 1177
931/* sendfile always needs emulation */ 1178 const_iv (MSG_CMSG_CLOEXEC)
932static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1179 const_iv (SOCK_CLOEXEC)
933{
934 ssize_t res;
935 1180
936 if (!count) 1181 const_iv (F_OFD_GETLK)
937 return 0; 1182 const_iv (F_OFD_SETLK)
1183 const_iv (F_OFD_GETLKW)
938 1184
939#if HAVE_SENDFILE 1185 const_iv (FIFREEZE)
940# if __linux 1186 const_iv (FITHAW)
941 res = sendfile (ofd, ifd, &offset, count); 1187 const_iv (FITRIM)
1188 const_iv (FICLONE)
1189 const_iv (FICLONERANGE)
1190 const_iv (FIDEDUPERANGE)
942 1191
943# elif __freebsd 1192 const_iv (FS_IOC_GETFLAGS)
944 /* 1193 const_iv (FS_IOC_SETFLAGS)
945 * Of course, the freebsd sendfile is a dire hack with no thoughts 1194 const_iv (FS_IOC_GETVERSION)
946 * wasted on making it similar to other I/O functions. 1195 const_iv (FS_IOC_SETVERSION)
947 */ 1196 const_iv (FS_IOC_FIEMAP)
1197 const_iv (FS_IOC_FSGETXATTR)
1198 const_iv (FS_IOC_FSSETXATTR)
1199 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1200 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1201 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1202
1203 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1204
1205 const_iv (FS_SECRM_FL)
1206 const_iv (FS_UNRM_FL)
1207 const_iv (FS_COMPR_FL)
1208 const_iv (FS_SYNC_FL)
1209 const_iv (FS_IMMUTABLE_FL)
1210 const_iv (FS_APPEND_FL)
1211 const_iv (FS_NODUMP_FL)
1212 const_iv (FS_NOATIME_FL)
1213 const_iv (FS_DIRTY_FL)
1214 const_iv (FS_COMPRBLK_FL)
1215 const_iv (FS_NOCOMP_FL)
1216 const_iv (FS_ENCRYPT_FL)
1217 const_iv (FS_BTREE_FL)
1218 const_iv (FS_INDEX_FL)
1219 const_iv (FS_JOURNAL_DATA_FL)
1220 const_iv (FS_NOTAIL_FL)
1221 const_iv (FS_DIRSYNC_FL)
1222 const_iv (FS_TOPDIR_FL)
1223 const_iv (FS_FL_USER_MODIFIABLE)
1224
1225 const_iv (FS_XFLAG_REALTIME)
1226 const_iv (FS_XFLAG_PREALLOC)
1227 const_iv (FS_XFLAG_IMMUTABLE)
1228 const_iv (FS_XFLAG_APPEND)
1229 const_iv (FS_XFLAG_SYNC)
1230 const_iv (FS_XFLAG_NOATIME)
1231 const_iv (FS_XFLAG_NODUMP)
1232 const_iv (FS_XFLAG_RTINHERIT)
1233 const_iv (FS_XFLAG_PROJINHERIT)
1234 const_iv (FS_XFLAG_NOSYMLINKS)
1235 const_iv (FS_XFLAG_EXTSIZE)
1236 const_iv (FS_XFLAG_EXTSZINHERIT)
1237 const_iv (FS_XFLAG_NODEFRAG)
1238 const_iv (FS_XFLAG_FILESTREAM)
1239 const_iv (FS_XFLAG_DAX)
1240 const_iv (FS_XFLAG_HASATTR)
1241
1242 const_iv (FIEMAP_FLAG_SYNC)
1243 const_iv (FIEMAP_FLAG_XATTR)
1244 const_iv (FIEMAP_FLAGS_COMPAT)
1245 const_iv (FIEMAP_EXTENT_LAST)
1246 const_iv (FIEMAP_EXTENT_UNKNOWN)
1247 const_iv (FIEMAP_EXTENT_DELALLOC)
1248 const_iv (FIEMAP_EXTENT_ENCODED)
1249 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1250 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1251 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1252 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1253 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1254 const_iv (FIEMAP_EXTENT_MERGED)
1255 const_iv (FIEMAP_EXTENT_SHARED)
1256
1257 const_iv (SPLICE_F_MOVE)
1258 const_iv (SPLICE_F_NONBLOCK)
1259 const_iv (SPLICE_F_MORE)
1260 const_iv (SPLICE_F_GIFT)
1261
1262 const_iv (EFD_CLOEXEC)
1263 const_iv (EFD_NONBLOCK)
1264 const_iv (EFD_SEMAPHORE)
1265
1266 const_iv (CLOCK_REALTIME)
1267 const_iv (CLOCK_MONOTONIC)
1268 const_iv (CLOCK_BOOTTIME)
1269 const_iv (CLOCK_REALTIME_ALARM)
1270 const_iv (CLOCK_BOOTTIME_ALARM)
1271
1272 const_iv (TFD_NONBLOCK)
1273 const_iv (TFD_CLOEXEC)
1274
1275 const_iv (TFD_TIMER_ABSTIME)
1276 const_iv (TFD_TIMER_CANCEL_ON_SET)
1277
1278 /* these are libeio constants, and are independent of gendef0 */
1279 const_eio (SEEK_SET)
1280 const_eio (SEEK_CUR)
1281 const_eio (SEEK_END)
1282
1283 const_eio (MCL_FUTURE)
1284 const_eio (MCL_CURRENT)
1285 const_eio (MCL_ONFAULT)
1286
1287 const_eio (MS_ASYNC)
1288 const_eio (MS_INVALIDATE)
1289 const_eio (MS_SYNC)
1290
1291 const_eio (MT_MODIFY)
1292
1293 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1294 const_eio (SYNC_FILE_RANGE_WRITE)
1295 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1296
1297 const_eio (FALLOC_FL_KEEP_SIZE)
1298 const_eio (FALLOC_FL_PUNCH_HOLE)
1299 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1300 const_eio (FALLOC_FL_ZERO_RANGE)
1301 const_eio (FALLOC_FL_INSERT_RANGE)
1302 const_eio (FALLOC_FL_UNSHARE_RANGE)
1303
1304 const_eio (RENAME_NOREPLACE)
1305 const_eio (RENAME_EXCHANGE)
1306 const_eio (RENAME_WHITEOUT)
1307
1308 const_eio (READDIR_DENTS)
1309 const_eio (READDIR_DIRS_FIRST)
1310 const_eio (READDIR_STAT_ORDER)
1311 const_eio (READDIR_FOUND_UNKNOWN)
1312
1313 const_eio (DT_UNKNOWN)
1314 const_eio (DT_FIFO)
1315 const_eio (DT_CHR)
1316 const_eio (DT_DIR)
1317 const_eio (DT_BLK)
1318 const_eio (DT_REG)
1319 const_eio (DT_LNK)
1320 const_eio (DT_SOCK)
1321 const_eio (DT_WHT)
1322 };
1323
1324 aio_stash = gv_stashpv ("IO::AIO" , 1);
1325 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1326 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1327 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1328
1329 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1330 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1331
1332 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1333
1334 /* allocate dummy pipe fd for aio_close */
948 { 1335 {
949 off_t sbytes; 1336 int pipefd [2];
950 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951 1337
952 if (res < 0 && sbytes) 1338 if (
953 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1339#ifdef _WIN32
954 res = sbytes; 1340 _pipe (pipefd, 1, _O_BINARY) < 0
1341#else
1342 pipe (pipefd) < 0
1343 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1344#endif
1345 || close (pipefd [1]) < 0
1346 )
1347 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1348
1349 close_fd = pipefd [0];
955 } 1350 }
956 1351
957# elif __hpux 1352 reinit ();
958 res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960# elif __solaris
961 {
962 struct sendfilevec vec;
963 size_t sbytes;
964
965 vec.sfv_fd = ifd;
966 vec.sfv_flag = 0;
967 vec.sfv_off = offset;
968 vec.sfv_len = count;
969
970 res = sendfilev (ofd, &vec, 1, &sbytes);
971
972 if (res < 0 && sbytes)
973 res = sbytes;
974 }
975
976# endif
977#else
978 res = -1;
979 errno = ENOSYS;
980#endif
981
982 if (res < 0
983 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984#if __solaris
985 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
986#endif
987 )
988 )
989 {
990 /* emulate sendfile. this is a major pain in the ass */
991 dBUF;
992
993 res = 0;
994
995 while (count)
996 {
997 ssize_t cnt;
998
999 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001 if (cnt <= 0)
1002 {
1003 if (cnt && !res) res = -1;
1004 break;
1005 }
1006
1007 cnt = write (ofd, aio_buf, cnt);
1008
1009 if (cnt <= 0)
1010 {
1011 if (cnt && !res) res = -1;
1012 break;
1013 }
1014
1015 offset += cnt;
1016 res += cnt;
1017 count -= cnt;
1018 }
1019 }
1020
1021 return res;
1022} 1353}
1023 1354
1024/* read a full directory */
1025static void scandir_ (aio_req req, worker *self)
1026{
1027 DIR *dirp;
1028 union
1029 {
1030 struct dirent d;
1031 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032 } *u;
1033 struct dirent *entp;
1034 char *name, *names;
1035 int memlen = 4096;
1036 int memofs = 0;
1037 int res = 0;
1038 int errorno;
1039
1040 LOCK (wrklock);
1041 self->dirp = dirp = opendir (req->ptr1);
1042 self->dbuf = u = malloc (sizeof (*u));
1043 req->flags |= FLAG_PTR2_FREE;
1044 req->ptr2 = names = malloc (memlen);
1045 UNLOCK (wrklock);
1046
1047 if (dirp && u && names)
1048 for (;;)
1049 {
1050 errno = 0;
1051 readdir_r (dirp, &u->d, &entp);
1052
1053 if (!entp)
1054 break;
1055
1056 name = entp->d_name;
1057
1058 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059 {
1060 int len = strlen (name) + 1;
1061
1062 res++;
1063
1064 while (memofs + len > memlen)
1065 {
1066 memlen *= 2;
1067 LOCK (wrklock);
1068 req->ptr2 = names = realloc (names, memlen);
1069 UNLOCK (wrklock);
1070
1071 if (!names)
1072 break;
1073 }
1074
1075 memcpy (names + memofs, name, len);
1076 memofs += len;
1077 }
1078 }
1079
1080 if (errno)
1081 res = -1;
1082
1083 req->result = res;
1084}
1085
1086/*****************************************************************************/
1087
1088static void *aio_proc (void *thr_arg)
1089{
1090 aio_req req;
1091 struct timespec ts;
1092 worker *self = (worker *)thr_arg;
1093
1094 /* try to distribute timeouts somewhat evenly */
1095 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096 * (1000000000UL / 1024UL);
1097
1098 for (;;)
1099 {
1100 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102 LOCK (reqlock);
1103
1104 for (;;)
1105 {
1106 self->req = req = reqq_shift (&req_queue);
1107
1108 if (req)
1109 break;
1110
1111 ++idle;
1112
1113 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114 == ETIMEDOUT)
1115 {
1116 if (idle > max_idle)
1117 {
1118 --idle;
1119 UNLOCK (reqlock);
1120 LOCK (wrklock);
1121 --started;
1122 UNLOCK (wrklock);
1123 goto quit;
1124 }
1125
1126 /* we are allowed to idle, so do so without any timeout */
1127 COND_WAIT (reqwait, reqlock);
1128 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129 }
1130
1131 --idle;
1132 }
1133
1134 --nready;
1135
1136 UNLOCK (reqlock);
1137
1138 errno = 0; /* strictly unnecessary */
1139
1140 if (!(req->flags & FLAG_CANCELLED))
1141 switch (req->type)
1142 {
1143 case REQ_READ: req->result = req->offs >= 0
1144 ? pread (req->int1, req->ptr1, req->size, req->offs)
1145 : read (req->int1, req->ptr1, req->size); break;
1146 case REQ_WRITE: req->result = req->offs >= 0
1147 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148 : write (req->int1, req->ptr1, req->size); break;
1149
1150 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163 case REQ_CLOSE: req->result = close (req->int1); break;
1164 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174 case REQ_FSYNC: req->result = fsync (req->int1); break;
1175 case REQ_READDIR: scandir_ (req, self); break;
1176
1177 case REQ_BUSY:
1178 {
1179 struct timeval tv;
1180
1181 tv.tv_sec = req->nv1;
1182 tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184 req->result = select (0, 0, 0, 0, &tv);
1185 }
1186
1187 case REQ_UTIME:
1188 case REQ_FUTIME:
1189 {
1190 struct timeval tv[2];
1191 struct timeval *times;
1192
1193 if (req->nv1 != -1. || req->nv2 != -1.)
1194 {
1195 tv[0].tv_sec = req->nv1;
1196 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197 tv[1].tv_sec = req->nv2;
1198 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200 times = tv;
1201 }
1202 else
1203 times = 0;
1204
1205
1206 req->result = req->type == REQ_FUTIME
1207 ? futimes (req->int1, times)
1208 : utimes (req->ptr1, times);
1209 }
1210
1211 case REQ_GROUP:
1212 case REQ_NOP:
1213 break;
1214
1215 case REQ_QUIT:
1216 goto quit;
1217
1218 default:
1219 req->result = -1;
1220 break;
1221 }
1222
1223 req->errorno = errno;
1224
1225 LOCK (reslock);
1226
1227 ++npending;
1228
1229 if (!reqq_push (&res_queue, req))
1230 {
1231 /* write a dummy byte to the pipe so fh becomes ready */
1232 write (respipe [1], &respipe, 1);
1233
1234 /* optionally signal the main thread asynchronously */
1235 if (main_sig)
1236 pthread_kill (main_tid, main_sig);
1237 }
1238
1239 self->req = 0;
1240 worker_clear (self);
1241
1242 UNLOCK (reslock);
1243 }
1244
1245quit:
1246 LOCK (wrklock);
1247 worker_free (self);
1248 UNLOCK (wrklock);
1249
1250 return 0;
1251}
1252
1253/*****************************************************************************/
1254
1255static void atfork_prepare (void)
1256{
1257 LOCK (wrklock);
1258 LOCK (reqlock);
1259 LOCK (reslock);
1260#if !HAVE_PREADWRITE
1261 LOCK (preadwritelock);
1262#endif
1263#if !HAVE_READDIR_R
1264 LOCK (readdirlock);
1265#endif
1266}
1267
1268static void atfork_parent (void)
1269{
1270#if !HAVE_READDIR_R
1271 UNLOCK (readdirlock);
1272#endif
1273#if !HAVE_PREADWRITE
1274 UNLOCK (preadwritelock);
1275#endif
1276 UNLOCK (reslock);
1277 UNLOCK (reqlock);
1278 UNLOCK (wrklock);
1279}
1280
1281static void atfork_child (void)
1282{
1283 aio_req prv;
1284
1285 while (prv = reqq_shift (&req_queue))
1286 req_destroy (prv);
1287
1288 while (prv = reqq_shift (&res_queue))
1289 req_destroy (prv);
1290
1291 while (wrk_first.next != &wrk_first)
1292 {
1293 worker *wrk = wrk_first.next;
1294
1295 if (wrk->req)
1296 req_destroy (wrk->req);
1297
1298 worker_clear (wrk);
1299 worker_free (wrk);
1300 }
1301
1302 started = 0;
1303 idle = 0;
1304 nreqs = 0;
1305 nready = 0;
1306 npending = 0;
1307
1308 close (respipe [0]);
1309 close (respipe [1]);
1310 create_pipe ();
1311
1312 atfork_parent ();
1313}
1314
1315#define dREQ \
1316 aio_req req; \
1317 int req_pri = next_pri; \
1318 next_pri = DEFAULT_PRI + PRI_BIAS; \
1319 \
1320 if (SvOK (callback) && !SvROK (callback)) \
1321 croak ("callback must be undef or of reference type"); \
1322 \
1323 Newz (0, req, 1, aio_cb); \
1324 if (!req) \
1325 croak ("out of memory during aio_req allocation"); \
1326 \
1327 req->callback = newSVsv (callback); \
1328 req->pri = req_pri
1329
1330#define REQ_SEND \
1331 req_send (req); \
1332 \
1333 if (GIMME_V != G_VOID) \
1334 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335
1336MODULE = IO::AIO PACKAGE = IO::AIO
1337
1338PROTOTYPES: ENABLE
1339
1340BOOT:
1341{
1342 HV *stash = gv_stashpv ("IO::AIO", 1);
1343
1344 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1345 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1346 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351
1352 create_pipe ();
1353 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354}
1355
1356void 1355void
1356reinit ()
1357 PROTOTYPE:
1358
1359void
1357max_poll_reqs (int nreqs) 1360max_poll_reqs (unsigned int nreqs)
1358 PROTOTYPE: $ 1361 PROTOTYPE: $
1359 CODE: 1362 CODE:
1360 max_poll_reqs = nreqs; 1363 eio_set_max_poll_reqs (nreqs);
1361 1364
1362void 1365void
1363max_poll_time (double nseconds) 1366max_poll_time (double nseconds)
1364 PROTOTYPE: $ 1367 PROTOTYPE: $
1365 CODE: 1368 CODE:
1366 max_poll_time = nseconds * AIO_TICKS; 1369 eio_set_max_poll_time (nseconds);
1367 1370
1368void 1371void
1369min_parallel (int nthreads) 1372min_parallel (unsigned int nthreads)
1370 PROTOTYPE: $
1371
1372void
1373max_parallel (int nthreads)
1374 PROTOTYPE: $
1375
1376void
1377max_idle (int nthreads)
1378 PROTOTYPE: $ 1373 PROTOTYPE: $
1379 CODE: 1374 CODE:
1380 set_max_idle (nthreads); 1375 eio_set_min_parallel (nthreads);
1381 1376
1382int 1377void
1383max_outstanding (int maxreqs) 1378max_parallel (unsigned int nthreads)
1384 PROTOTYPE: $ 1379 PROTOTYPE: $
1385 CODE: 1380 CODE:
1386 RETVAL = max_outstanding; 1381 eio_set_max_parallel (nthreads);
1382
1383void
1384max_idle (unsigned int nthreads)
1385 PROTOTYPE: $
1386 CODE:
1387 eio_set_max_idle (nthreads);
1388
1389void
1390idle_timeout (unsigned int seconds)
1391 PROTOTYPE: $
1392 CODE:
1393 eio_set_idle_timeout (seconds);
1394
1395void
1396max_outstanding (unsigned int maxreqs)
1397 PROTOTYPE: $
1398 CODE:
1387 max_outstanding = maxreqs; 1399 max_outstanding = maxreqs;
1388 OUTPUT:
1389 RETVAL
1390 1400
1391void 1401void
1392aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1402aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393 PROTOTYPE: $$$;$
1394 PPCODE: 1403 PPCODE:
1395{ 1404{
1396 dREQ; 1405 dREQ;
1397 1406
1407 req->type = EIO_WD_OPEN;
1408 req_set_path1 (req, pathname);
1409
1410 REQ_SEND;
1411}
1412
1413void
1414aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1415 PPCODE:
1416{
1417 dREQ;
1418
1398 req->type = REQ_OPEN; 1419 req->type = EIO_OPEN;
1399 req->sv1 = newSVsv (pathname); 1420 req_set_path1 (req, pathname);
1400 req->ptr1 = SvPVbyte_nolen (req->sv1);
1401 req->int1 = flags; 1421 req->int1 = flags;
1402 req->mode = mode; 1422 req->int2 = mode;
1403 1423
1404 REQ_SEND; 1424 REQ_SEND;
1405} 1425}
1406 1426
1407void 1427void
1408aio_close (SV *fh, SV *callback=&PL_sv_undef) 1428aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409 PROTOTYPE: $;$
1410 ALIAS: 1429 ALIAS:
1411 aio_close = REQ_CLOSE
1412 aio_fsync = REQ_FSYNC 1430 aio_fsync = EIO_FSYNC
1413 aio_fdatasync = REQ_FDATASYNC 1431 aio_fdatasync = EIO_FDATASYNC
1432 aio_syncfs = EIO_SYNCFS
1414 PPCODE: 1433 PPCODE:
1415{ 1434{
1435 int fd = s_fileno_croak (fh, 0);
1416 dREQ; 1436 dREQ;
1417 1437
1418 req->type = ix; 1438 req->type = ix;
1419 req->sv1 = newSVsv (fh); 1439 req->sv1 = newSVsv (fh);
1420 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1440 req->int1 = fd;
1421 1441
1422 REQ_SEND (req); 1442 REQ_SEND;
1423} 1443}
1424 1444
1425void 1445void
1446aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1447 PPCODE:
1448{
1449 int fd = s_fileno_croak (fh, 0);
1450 dREQ;
1451
1452 req->type = EIO_SYNC_FILE_RANGE;
1453 req->sv1 = newSVsv (fh);
1454 req->int1 = fd;
1455 req->offs = offset;
1456 req->size = nbytes;
1457 req->int2 = flags;
1458
1459 REQ_SEND;
1460}
1461
1462void
1463aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1464 PPCODE:
1465{
1466 int fd = s_fileno_croak (fh, 0);
1467 dREQ;
1468
1469 req->type = EIO_FALLOCATE;
1470 req->sv1 = newSVsv (fh);
1471 req->int1 = fd;
1472 req->int2 = mode;
1473 req->offs = offset;
1474 req->size = len;
1475
1476 REQ_SEND;
1477}
1478
1479void
1480aio_close (SV *fh, SV *callback = &PL_sv_undef)
1481 PPCODE:
1482{
1483 int fd = s_fileno_croak (fh, 0);
1484 dREQ;
1485#if 0
1486 /* partially duplicate logic in s_fileno */
1487 SvGETMAGIC (fh);
1488
1489 if (SvROK (fh))
1490 {
1491 fh = SvRV (fh);
1492 SvGETMAGIC (fh);
1493 }
1494
1495 if (SvTYPE (fh) == SVt_PVGV)
1496 {
1497 /* perl filehandle */
1498 PerlIOUnix_refcnt_inc (fd);
1499 do_close ((GV *)fh, 1);
1500
1501 req->type = EIO_CLOSE;
1502 req->int1 = fd;
1503 /*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
1504 }
1505 else
1506#endif
1507 {
1508 /* fd number */
1509 req->type = EIO_DUP2;
1510 req->int1 = close_fd;
1511 req->sv2 = newSVsv (fh);
1512 req->int2 = fd;
1513 }
1514
1515 REQ_SEND;
1516}
1517
1518void
1519aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1520 PPCODE:
1521{
1522 int fd = s_fileno_croak (fh, 0);
1523 dREQ;
1524
1525 req->type = EIO_SEEK;
1526 req->sv1 = newSVsv (fh);
1527 req->int1 = fd;
1528 req->offs = SvVAL64 (offset);
1529 req->int2 = whence;
1530
1531 REQ_SEND;
1532}
1533
1534void
1426aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1535aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427 ALIAS: 1536 ALIAS:
1428 aio_read = REQ_READ 1537 aio_read = EIO_READ
1429 aio_write = REQ_WRITE 1538 aio_write = EIO_WRITE
1430 PROTOTYPE: $$$$$;$
1431 PPCODE: 1539 PPCODE:
1432{ 1540{
1433 STRLEN svlen; 1541 STRLEN svlen;
1542 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434 char *svptr = SvPVbyte (data, svlen); 1543 char *svptr = SvPVbyte (data, svlen);
1435 UV len = SvUV (length); 1544 UV len = SvUV (length);
1436 1545
1437 SvUPGRADE (data, SVt_PV);
1438 SvPOK_on (data);
1439
1440 if (dataoffset < 0) 1546 if (dataoffset < 0)
1441 dataoffset += svlen; 1547 dataoffset += svlen;
1442 1548
1443 if (dataoffset < 0 || dataoffset > svlen) 1549 if (dataoffset < 0 || dataoffset > svlen)
1444 croak ("dataoffset outside of data scalar"); 1550 croak ("dataoffset outside of data scalar");
1445 1551
1446 if (ix == REQ_WRITE) 1552 if (ix == EIO_WRITE)
1447 { 1553 {
1448 /* write: check length and adjust. */ 1554 /* write: check length and adjust. */
1449 if (!SvOK (length) || len + dataoffset > svlen) 1555 if (!SvOK (length) || len + dataoffset > svlen)
1450 len = svlen - dataoffset; 1556 len = svlen - dataoffset;
1451 } 1557 }
1452 else 1558 else
1453 { 1559 {
1454 /* read: grow scalar as necessary */ 1560 /* read: check type and grow scalar as necessary */
1561 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1455 svptr = SvGROW (data, len + dataoffset + 1); 1562 svptr = sv_grow (data, len + dataoffset + 1);
1563 else if (SvCUR (data) < len + dataoffset)
1564 croak ("length + dataoffset outside of scalar, and cannot grow");
1456 } 1565 }
1457
1458 if (len < 0)
1459 croak ("length must not be negative");
1460 1566
1461 { 1567 {
1462 dREQ; 1568 dREQ;
1463 1569
1464 req->type = ix; 1570 req->type = ix;
1465 req->sv1 = newSVsv (fh); 1571 req->sv1 = newSVsv (fh);
1466 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1572 req->int1 = fd;
1467 : IoOFP (sv_2io (fh)));
1468 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1573 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469 req->size = len; 1574 req->size = len;
1470 req->sv2 = SvREFCNT_inc (data); 1575 req->sv2 = SvREFCNT_inc (data);
1471 req->ptr1 = (char *)svptr + dataoffset; 1576 req->ptr2 = (char *)svptr + dataoffset;
1472 req->stroffset = dataoffset; 1577 req->stroffset = dataoffset;
1473 1578
1474 if (!SvREADONLY (data)) 1579 if (!SvREADONLY (data))
1475 { 1580 {
1476 SvREADONLY_on (data); 1581 SvREADONLY_on (data);
… …
1480 REQ_SEND; 1585 REQ_SEND;
1481 } 1586 }
1482} 1587}
1483 1588
1484void 1589void
1485aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1590aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1486 PROTOTYPE: $$;$ 1591 ALIAS:
1592 aio_ioctl = EIO_IOCTL
1593 aio_fcntl = EIO_FCNTL
1487 PPCODE: 1594 PPCODE:
1488{ 1595{
1489 SV *data; 1596 int fd = s_fileno_croak (fh, 0);
1490 dREQ; 1597 char *svptr;
1491 1598
1492 data = newSV (NAME_MAX); 1599 if (SvPOK (arg) || !SvNIOK (arg))
1493 SvPOK_on (data);
1494
1495 req->type = REQ_READLINK;
1496 req->sv1 = newSVsv (path);
1497 req->ptr2 = SvPVbyte_nolen (req->sv1);
1498 req->sv2 = data;
1499 req->ptr1 = SvPVbyte_nolen (data);
1500
1501 REQ_SEND;
1502}
1503
1504void
1505aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1506 PROTOTYPE: $$$$;$
1507 PPCODE:
1508{
1509 dREQ;
1510
1511 req->type = REQ_SENDFILE;
1512 req->sv1 = newSVsv (out_fh);
1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1514 req->sv2 = newSVsv (in_fh);
1515 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1516 req->offs = SvVAL64 (in_offset);
1517 req->size = length;
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1524 PROTOTYPE: $$$;$
1525 PPCODE:
1526{
1527 dREQ;
1528
1529 req->type = REQ_READAHEAD;
1530 req->sv1 = newSVsv (fh);
1531 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1532 req->offs = SvVAL64 (offset);
1533 req->size = length;
1534
1535 REQ_SEND;
1536}
1537
1538void
1539aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540 ALIAS:
1541 aio_stat = REQ_STAT
1542 aio_lstat = REQ_LSTAT
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req->ptr2 = malloc (sizeof (Stat_t));
1548 if (!req->ptr2)
1549 { 1600 {
1550 req_destroy (req); 1601 STRLEN svlen;
1551 croak ("out of memory during aio_stat statdata allocation"); 1602 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1552 } 1603#ifdef IOCPARM_LEN
1604 STRLEN need = IOCPARM_LEN (request);
1605#else
1606 STRLEN need = 256;
1607#endif
1553 1608
1554 req->flags |= FLAG_PTR2_FREE; 1609 if (svlen < need)
1555 req->sv1 = newSVsv (fh_or_path); 1610 svptr = SvGROW (arg, need);
1556
1557 if (SvPOK (fh_or_path))
1558 {
1559 req->type = ix;
1560 req->ptr1 = SvPVbyte_nolen (req->sv1);
1561 } 1611 }
1562 else 1612 else
1613 svptr = (char *)SvIV (arg);
1614
1563 { 1615 {
1616 dREQ;
1617
1564 req->type = REQ_FSTAT; 1618 req->type = ix;
1565 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1619 req->sv1 = newSVsv (fh);
1620 req->int1 = fd;
1621 req->int2 = (long)request;
1622 req->sv2 = SvREFCNT_inc (arg);
1623 req->ptr2 = svptr;
1624
1625 REQ_SEND;
1566 } 1626 }
1627}
1628
1629void
1630aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1631 ALIAS:
1632 aio_readlink = EIO_READLINK
1633 aio_realpath = EIO_REALPATH
1634 PPCODE:
1635{
1636 dREQ;
1637
1638 req->type = ix;
1639 req_set_path1 (req, pathname);
1567 1640
1568 REQ_SEND; 1641 REQ_SEND;
1569} 1642}
1570 1643
1571void 1644void
1645aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1646 PPCODE:
1647{
1648 int ifd = s_fileno_croak (in_fh , 0);
1649 int ofd = s_fileno_croak (out_fh, 1);
1650 dREQ;
1651
1652 req->type = EIO_SENDFILE;
1653 req->sv1 = newSVsv (out_fh);
1654 req->int1 = ofd;
1655 req->sv2 = newSVsv (in_fh);
1656 req->int2 = ifd;
1657 req->offs = in_offset;
1658 req->size = length;
1659
1660 REQ_SEND;
1661}
1662
1663void
1664aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1665 PPCODE:
1666{
1667 int fd = s_fileno_croak (fh, 0);
1668 dREQ;
1669
1670 req->type = EIO_READAHEAD;
1671 req->sv1 = newSVsv (fh);
1672 req->int1 = fd;
1673 req->offs = offset;
1674 req->size = length;
1675
1676 REQ_SEND;
1677}
1678
1679void
1680aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1681 ALIAS:
1682 aio_stat = EIO_STAT
1683 aio_lstat = EIO_LSTAT
1684 aio_statvfs = EIO_STATVFS
1685 PPCODE:
1686{
1687 dREQ;
1688
1689 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1690
1691 REQ_SEND;
1692}
1693
1694void
1695st_xtime ()
1696 ALIAS:
1697 st_atime = 0x01
1698 st_mtime = 0x02
1699 st_ctime = 0x04
1700 st_btime = 0x08
1701 st_xtime = 0x0f
1702 PPCODE:
1703 EXTEND (SP, 4);
1704 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1705 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1706 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1707 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1708
1709void
1710st_xtimensec ()
1711 ALIAS:
1712 st_atimensec = 0x01
1713 st_mtimensec = 0x02
1714 st_ctimensec = 0x04
1715 st_btimensec = 0x08
1716 st_xtimensec = 0x0f
1717 st_btimesec = 0x10
1718 st_gen = 0x20
1719 PPCODE:
1720 EXTEND (SP, 4);
1721 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1722 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1723 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1724 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1725 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1726 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1727
1728UV
1729major (UV dev)
1730 ALIAS:
1731 minor = 1
1732 CODE:
1733 RETVAL = ix ? minor (dev) : major (dev);
1734 OUTPUT:
1735 RETVAL
1736
1737UV
1738makedev (UV maj, UV min)
1739 CODE:
1740 RETVAL = makedev (maj, min);
1741 OUTPUT:
1742 RETVAL
1743
1744void
1572aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1745aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1573 PPCODE: 1746 PPCODE:
1574{ 1747{
1575 dREQ; 1748 dREQ;
1576 1749
1577 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1750 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1751 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579 req->sv1 = newSVsv (fh_or_path); 1752 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1580
1581 if (SvPOK (fh_or_path))
1582 {
1583 req->type = REQ_UTIME;
1584 req->ptr1 = SvPVbyte_nolen (req->sv1);
1585 }
1586 else
1587 {
1588 req->type = REQ_FUTIME;
1589 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590 }
1591 1753
1592 REQ_SEND; 1754 REQ_SEND;
1593} 1755}
1594 1756
1595void 1757void
1596aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1758aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1597 PPCODE: 1759 PPCODE:
1598{ 1760{
1599 dREQ; 1761 dREQ;
1600 1762
1601 req->mode = mode; 1763 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1602 req->sv1 = newSVsv (fh_or_path); 1764 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1603
1604 if (SvPOK (fh_or_path))
1605 {
1606 req->type = REQ_CHMOD;
1607 req->ptr1 = SvPVbyte_nolen (req->sv1);
1608 }
1609 else
1610 {
1611 req->type = REQ_FCHMOD;
1612 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613 }
1614 1765
1615 REQ_SEND; 1766 REQ_SEND;
1616} 1767}
1617 1768
1618void 1769void
1770aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1771 PPCODE:
1772{
1773 dREQ;
1774
1775 req->int2 = mode;
1776 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1777
1778 REQ_SEND;
1779}
1780
1781void
1619aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) 1782aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1620 PPCODE: 1783 PPCODE:
1621{ 1784{
1622 dREQ; 1785 dREQ;
1623 1786
1624 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1787 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1788 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626 req->sv1 = newSVsv (fh_or_path); 1789 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1627
1628 if (SvPOK (fh_or_path))
1629 {
1630 req->type = REQ_CHOWN;
1631 req->ptr1 = SvPVbyte_nolen (req->sv1);
1632 }
1633 else
1634 {
1635 req->type = REQ_FCHOWN;
1636 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637 }
1638 1790
1639 REQ_SEND; 1791 REQ_SEND;
1640} 1792}
1641 1793
1642void 1794void
1795aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1796 PPCODE:
1797{
1798 dREQ;
1799
1800 req->type = EIO_READDIR;
1801 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1802
1803 if (flags & EIO_READDIR_DENTS)
1804 req->int1 |= EIO_READDIR_CUSTOM2;
1805
1806 req_set_path1 (req, pathname);
1807
1808 REQ_SEND;
1809}
1810
1811void
1812aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1813 PPCODE:
1814{
1815 dREQ;
1816
1817 req->type = EIO_MKDIR;
1818 req->int2 = mode;
1819 req_set_path1 (req, pathname);
1820
1821 REQ_SEND;
1822}
1823
1824void
1643aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1825aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1644 ALIAS: 1826 ALIAS:
1645 aio_unlink = REQ_UNLINK 1827 aio_unlink = EIO_UNLINK
1646 aio_rmdir = REQ_RMDIR 1828 aio_rmdir = EIO_RMDIR
1647 aio_readdir = REQ_READDIR 1829 aio_readdir = EIO_READDIR
1648 PPCODE: 1830 PPCODE:
1649{ 1831{
1650 dREQ; 1832 dREQ;
1651 1833
1652 req->type = ix; 1834 req->type = ix;
1653 req->sv1 = newSVsv (pathname); 1835 req_set_path1 (req, pathname);
1654 req->ptr1 = SvPVbyte_nolen (req->sv1);
1655 1836
1656 REQ_SEND; 1837 REQ_SEND;
1657} 1838}
1658 1839
1659void 1840void
1660aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) 1841aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1842 ALIAS:
1843 aio_link = EIO_LINK
1844 aio_symlink = EIO_SYMLINK
1845 aio_rename = EIO_RENAME
1661 PPCODE: 1846 PPCODE:
1662{ 1847{
1663 dREQ; 1848 eio_wd wd2 = 0;
1664
1665 req->type = REQ_MKDIR;
1666 req->sv1 = newSVsv (pathname);
1667 req->ptr1 = SvPVbyte_nolen (req->sv1);
1668 req->mode = mode;
1669
1670 REQ_SEND;
1671}
1672
1673void
1674aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675 ALIAS:
1676 aio_link = REQ_LINK
1677 aio_symlink = REQ_SYMLINK
1678 aio_rename = REQ_RENAME
1679 PPCODE:
1680{
1681 dREQ; 1849 dREQ;
1682 1850
1683 req->type = ix; 1851 req->type = ix;
1684 req->sv2 = newSVsv (oldpath); 1852 req_set_path1 (req, oldpath);
1685 req->ptr2 = SvPVbyte_nolen (req->sv2); 1853 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1686 req->sv1 = newSVsv (newpath); 1854 req->int3 = (long)wd2;
1687 req->ptr1 = SvPVbyte_nolen (req->sv1);
1688 1855
1689 REQ_SEND; 1856 REQ_SEND;
1690} 1857}
1691 1858
1692void 1859void
1693aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1860aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1694 PPCODE: 1861 PPCODE:
1695{ 1862{
1863 eio_wd wd2 = 0;
1696 dREQ; 1864 dREQ;
1697 1865
1698 req->type = REQ_MKNOD; 1866 req->type = EIO_RENAME;
1699 req->sv1 = newSVsv (pathname); 1867 req_set_path1 (req, oldpath);
1700 req->ptr1 = SvPVbyte_nolen (req->sv1); 1868 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1701 req->mode = (mode_t)mode; 1869 req->int2 = flags;
1702 req->offs = dev; 1870 req->int3 = (long)wd2;
1703 1871
1704 REQ_SEND; 1872 REQ_SEND;
1705} 1873}
1706 1874
1707void 1875void
1708aio_busy (double delay, SV *callback=&PL_sv_undef) 1876aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1709 PPCODE: 1877 PPCODE:
1710{ 1878{
1711 dREQ; 1879 dREQ;
1880
1881 req->type = EIO_MKNOD;
1882 req->int2 = (mode_t)mode;
1883 req->offs = dev;
1884 req_set_path1 (req, pathname);
1885
1886 REQ_SEND;
1887}
1712 1888
1889void
1890aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1891 ALIAS:
1892 aio_mtouch = EIO_MTOUCH
1893 aio_msync = EIO_MSYNC
1894 PPCODE:
1895{
1896 STRLEN svlen;
1897 char *svptr = SvPVbyte (data, svlen);
1898 UV len = SvUV (length);
1899
1900 if (flags < 0)
1901 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1902
1903 if (offset < 0)
1904 offset += svlen;
1905
1906 if (offset < 0 || offset > svlen)
1907 croak ("offset outside of scalar");
1908
1909 if (!SvOK (length) || len + offset > svlen)
1910 len = svlen - offset;
1911
1912 {
1913 dREQ;
1914
1915 req->type = ix;
1916 req->sv2 = SvREFCNT_inc (data);
1917 req->ptr2 = (char *)svptr + offset;
1918 req->size = len;
1919 req->int1 = flags;
1920
1921 REQ_SEND;
1922 }
1923}
1924
1925void
1926aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1927 PPCODE:
1928{
1929 STRLEN svlen;
1930 char *svptr = SvPVbyte (data, svlen);
1931 UV len = SvUV (length);
1932
1933 if (offset < 0)
1934 offset += svlen;
1935
1936 if (offset < 0 || offset > svlen)
1937 croak ("offset outside of scalar");
1938
1939 if (!SvOK (length) || len + offset > svlen)
1940 len = svlen - offset;
1941
1942 {
1943 dREQ;
1944
1945 req->type = EIO_MLOCK;
1946 req->sv2 = SvREFCNT_inc (data);
1947 req->ptr2 = (char *)svptr + offset;
1948 req->size = len;
1949
1950 REQ_SEND;
1951 }
1952}
1953
1954void
1955aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1956 PPCODE:
1957{
1958 dREQ;
1959
1960 req->type = EIO_MLOCKALL;
1961 req->int1 = flags;
1962
1963 REQ_SEND;
1964}
1965
1966void
1967aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1968 PPCODE:
1969{
1970 int fd = s_fileno_croak (fh, 0);
1971 dREQ;
1972
1973 req->type = EIO_CUSTOM;
1974 req->sv1 = newSVsv (fh);
1975 req->int1 = fd;
1976
1977 req->feed = fiemap;
1978#if HAVE_FIEMAP
1979 /* keep our fingers crossed that the next two types are 64 bit */
1980 req->offs = start;
1981 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1982 req->int2 = flags;
1983 req->int3 = SvOK (count) ? SvIV (count) : -1;
1984#endif
1985
1986 REQ_SEND;
1987}
1988
1989void
1990aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1991 PPCODE:
1992{
1993 char *svptr = 0;
1994
1995 sv_clear_foreign (data);
1996
1997 if (length) /* known length, directly read into scalar */
1998 {
1999 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
2000 svptr = sv_grow (data, length + 1);
2001 else if (SvCUR (data) < length)
2002 croak ("length outside of scalar, and cannot grow");
2003 else
2004 svptr = SvPVbyte_nolen (data);
2005 }
2006
2007 {
2008 dREQ;
2009
2010 req->type = EIO_SLURP;
2011 req_set_path1 (req, pathname);
2012 req->offs = offset;
2013 req->size = length;
2014 req->sv2 = SvREFCNT_inc (data);
2015 req->ptr2 = svptr;
2016
2017 if (!SvREADONLY (data))
2018 {
2019 SvREADONLY_on (data);
2020 req->flags |= FLAG_SV2_RO_OFF;
2021 }
2022
2023 REQ_SEND;
2024 }
2025}
2026
2027void
2028aio_busy (double delay, SV *callback = &PL_sv_undef)
2029 PPCODE:
2030{
2031 dREQ;
2032
1713 req->type = REQ_BUSY; 2033 req->type = EIO_BUSY;
1714 req->nv1 = delay < 0. ? 0. : delay; 2034 req->nv1 = delay < 0. ? 0. : delay;
1715 2035
1716 REQ_SEND; 2036 REQ_SEND;
1717} 2037}
1718 2038
1719void 2039void
1720aio_group (SV *callback=&PL_sv_undef) 2040aio_group (SV *callback = &PL_sv_undef)
1721 PROTOTYPE: ;$
1722 PPCODE: 2041 PPCODE:
1723{ 2042{
1724 dREQ; 2043 dREQ;
1725 2044
1726 req->type = REQ_GROUP; 2045 req->type = EIO_GROUP;
1727 2046
2047 PUTBACK;
1728 req_send (req); 2048 req_submit (req);
2049 SPAGAIN;
2050
1729 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2051 XPUSHs (req_sv (req, aio_grp_stash));
1730} 2052}
1731 2053
1732void 2054void
1733aio_nop (SV *callback=&PL_sv_undef) 2055aio_nop (SV *callback = &PL_sv_undef)
2056 ALIAS:
2057 aio_nop = EIO_NOP
2058 aio_sync = EIO_SYNC
1734 PPCODE: 2059 PPCODE:
1735{ 2060{
1736 dREQ; 2061 dREQ;
1737 2062
1738 req->type = REQ_NOP; 2063 req->type = ix;
1739 2064
1740 REQ_SEND; 2065 REQ_SEND;
1741} 2066}
1742 2067
1743int 2068int
1744aioreq_pri (int pri = 0) 2069aioreq_pri (int pri = NO_INIT)
1745 PROTOTYPE: ;$
1746 CODE: 2070 CODE:
1747 RETVAL = next_pri - PRI_BIAS; 2071 RETVAL = next_pri;
1748 if (items > 0) 2072 if (items > 0)
1749 { 2073 {
1750 if (pri < PRI_MIN) pri = PRI_MIN; 2074 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751 if (pri > PRI_MAX) pri = PRI_MAX; 2075 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752 next_pri = pri + PRI_BIAS; 2076 next_pri = pri;
1753 } 2077 }
1754 OUTPUT: 2078 OUTPUT:
1755 RETVAL 2079 RETVAL
1756 2080
1757void 2081void
1758aioreq_nice (int nice = 0) 2082aioreq_nice (int nice = 0)
1759 CODE: 2083 CODE:
1760 nice = next_pri - nice; 2084 nice = next_pri - nice;
1761 if (nice < PRI_MIN) nice = PRI_MIN; 2085 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762 if (nice > PRI_MAX) nice = PRI_MAX; 2086 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763 next_pri = nice + PRI_BIAS; 2087 next_pri = nice;
1764 2088
1765void 2089void
1766flush () 2090flush ()
1767 PROTOTYPE:
1768 CODE: 2091 CODE:
1769 while (nreqs) 2092 while (eio_nreqs ())
1770 { 2093 {
1771 poll_wait (); 2094 poll_wait ();
1772 poll_cb (); 2095 poll_cb ();
1773 } 2096 }
1774 2097
1775int 2098int
1776poll() 2099poll ()
1777 PROTOTYPE:
1778 CODE: 2100 CODE:
1779 poll_wait (); 2101 poll_wait ();
1780 RETVAL = poll_cb (); 2102 RETVAL = poll_cb ();
1781 OUTPUT: 2103 OUTPUT:
1782 RETVAL 2104 RETVAL
1783 2105
1784int 2106int
1785poll_fileno() 2107poll_fileno ()
1786 PROTOTYPE:
1787 CODE: 2108 CODE:
1788 RETVAL = respipe [0]; 2109 RETVAL = s_epipe_fd (&respipe);
1789 OUTPUT: 2110 OUTPUT:
1790 RETVAL 2111 RETVAL
1791 2112
1792int 2113int
1793poll_cb(...) 2114poll_cb (...)
1794 PROTOTYPE: 2115 PROTOTYPE:
1795 CODE: 2116 CODE:
1796 RETVAL = poll_cb (); 2117 RETVAL = poll_cb ();
1797 OUTPUT: 2118 OUTPUT:
1798 RETVAL 2119 RETVAL
1799 2120
1800void 2121void
1801poll_wait() 2122poll_wait ()
1802 PROTOTYPE:
1803 CODE: 2123 CODE:
1804 poll_wait (); 2124 poll_wait ();
1805 2125
1806void
1807setsig (int signum = SIGIO)
1808 PROTOTYPE: ;$
1809 CODE:
1810{
1811 if (block_sig_level)
1812 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814 LOCK (reslock);
1815 main_tid = pthread_self ();
1816 main_sig = signum;
1817 UNLOCK (reslock);
1818
1819 if (main_sig && npending)
1820 pthread_kill (main_tid, main_sig);
1821}
1822
1823void
1824aio_block (SV *cb)
1825 PROTOTYPE: &
1826 PPCODE:
1827{
1828 int count;
1829
1830 block_sig ();
1831 PUSHMARK (SP);
1832 PUTBACK;
1833 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834 SPAGAIN;
1835 unblock_sig ();
1836
1837 if (SvTRUE (ERRSV))
1838 croak (0);
1839
1840 XSRETURN (count);
1841}
1842
1843int 2126int
1844nreqs() 2127nreqs ()
1845 PROTOTYPE:
1846 CODE: 2128 CODE:
1847 RETVAL = nreqs; 2129 RETVAL = eio_nreqs ();
1848 OUTPUT: 2130 OUTPUT:
1849 RETVAL 2131 RETVAL
1850 2132
1851int 2133int
1852nready() 2134nready ()
1853 PROTOTYPE:
1854 CODE: 2135 CODE:
1855 RETVAL = get_nready (); 2136 RETVAL = eio_nready ();
1856 OUTPUT: 2137 OUTPUT:
1857 RETVAL 2138 RETVAL
1858 2139
1859int 2140int
1860npending() 2141npending ()
1861 PROTOTYPE:
1862 CODE: 2142 CODE:
1863 RETVAL = get_npending (); 2143 RETVAL = eio_npending ();
1864 OUTPUT: 2144 OUTPUT:
1865 RETVAL 2145 RETVAL
1866 2146
1867int 2147int
1868nthreads() 2148nthreads ()
1869 PROTOTYPE:
1870 CODE: 2149 CODE:
1871 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2150 RETVAL = eio_nthreads ();
1872 RETVAL = started;
1873 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874 OUTPUT: 2151 OUTPUT:
1875 RETVAL 2152 RETVAL
1876 2153
2154int
2155fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2156 CODE:
2157 RETVAL = posix_fadvise (fh, offset, length, advice);
2158 OUTPUT:
2159 RETVAL
2160
2161IV
2162sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2163 CODE:
2164 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2165 OUTPUT:
2166 RETVAL
2167
2168void
2169mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2170 PPCODE:
2171 sv_clear_foreign (scalar);
2172{
2173 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2174 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2175 if (addr == (void *)-1)
2176 XSRETURN_NO;
2177
2178 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2179
2180 if (!(prot & PROT_WRITE))
2181 SvREADONLY_on (scalar);
2182
2183 XSRETURN_YES;
2184}
2185
2186void
2187munmap (SV *scalar)
2188 CODE:
2189 sv_clear_foreign (scalar);
2190
2191SV *
2192mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2193 CODE:
2194{
2195 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2196 void *new;
2197
2198 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2199 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2200
2201 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2202
2203 RETVAL = &PL_sv_no;
2204
2205 if (new != (void *)-1)
2206 {
2207 RETVAL = new == (void *)mg->mg_ptr
2208 ? newSVpvn ("0 but true", 10)
2209 : &PL_sv_yes;
2210
2211 mg->mg_ptr = (char *)new;
2212 mg->mg_obj = (SV *)new_length;
2213
2214 SvPVX (scalar) = mg->mg_ptr;
2215 SvCUR_set (scalar, new_length);
2216 }
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2223 ALIAS:
2224 mprotect = 1
2225 CODE:
2226{
2227 STRLEN svlen;
2228 void *addr = SvPVbyte (scalar, svlen);
2229 STRLEN len = SvUV (length);
2230
2231 if (offset < 0)
2232 offset += svlen;
2233
2234 if (offset < 0 || offset > svlen)
2235 croak ("offset outside of scalar");
2236
2237 if (!SvOK (length) || len + offset > svlen)
2238 len = svlen - offset;
2239
2240 addr = (void *)(((intptr_t)addr) + offset);
2241 eio_page_align (&addr, &len);
2242
2243 switch (ix)
2244 {
2245 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2246 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2247 }
2248}
2249 OUTPUT:
2250 RETVAL
2251
2252int
2253munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2254 CODE:
2255{
2256 STRLEN svlen;
2257 void *addr = SvPVbyte (scalar, svlen);
2258 size_t len = SvUV (length);
2259
2260 if (offset < 0)
2261 offset += svlen;
2262
2263 if (offset < 0 || offset > svlen)
2264 croak ("offset outside of scalar");
2265
2266 if (!SvOK (length) || len + offset > svlen)
2267 len = svlen - offset;
2268
2269 addr = (void *)(((intptr_t)addr) + offset);
2270 eio_page_align (&addr, &len);
2271#if _POSIX_MEMLOCK_RANGE
2272 RETVAL = munlock (addr, len);
2273#else
2274 RETVAL = EIO_ENOSYS ();
2275#endif
2276}
2277 OUTPUT:
2278 RETVAL
2279
2280int
2281mlockall (int flags)
2282 PROTOTYPE: $;
2283 CODE:
2284 RETVAL = eio_mlockall_sync (flags);
2285 OUTPUT:
2286 RETVAL
2287
2288int
2289munlockall ()
2290 CODE:
2291#if _POSIX_MEMLOCK
2292 munlockall ();
2293#else
2294 RETVAL = EIO_ENOSYS ();
2295#endif
2296 OUTPUT:
2297 RETVAL
2298
2299int
2300splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2301 CODE:
2302{
2303#if HAVE_LINUX_SPLICE
2304 loff_t off_in_, off_out_;
2305 RETVAL = splice (
2306 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2307 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2308 length, flags
2309 );
2310#else
2311 RETVAL = EIO_ENOSYS ();
2312#endif
2313}
2314 OUTPUT:
2315 RETVAL
2316
2317int
2318tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2319 CODE:
2320#if HAVE_LINUX_SPLICE
2321 RETVAL = tee (rfh, wfh, length, flags);
2322#else
2323 RETVAL = EIO_ENOSYS ();
2324#endif
2325 OUTPUT:
2326 RETVAL
2327
2328int
2329pipesize (aio_rfd rfh, int new_size = -1)
2330 PROTOTYPE: $;$
2331 CODE:
2332#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2333 if (new_size >= 0)
2334 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2335 else
2336 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2337#else
2338 errno = ENOSYS;
2339 RETVAL = -1;
2340#endif
2341 OUTPUT:
2342 RETVAL
2343
2344void
2345pipe2 (int flags = 0)
2346 PROTOTYPE: ;$
2347 PPCODE:
2348{
2349 int fd[2];
2350 int res;
2351
2352 if (flags)
2353#if HAVE_PIPE2
2354 res = pipe2 (fd, flags);
2355#else
2356 res = (errno = ENOSYS, -1);
2357#endif
2358 else
2359 res = pipe (fd);
2360
2361 if (!res)
2362 {
2363 EXTEND (SP, 2);
2364 PUSHs (newmortalFH (fd[0], O_RDONLY));
2365 PUSHs (newmortalFH (fd[1], O_WRONLY));
2366 }
2367}
2368
2369void
2370eventfd (unsigned int initval = 0, int flags = 0)
2371 PPCODE:
2372{
2373 int fd;
2374#if HAVE_EVENTFD
2375 fd = eventfd (initval, flags);
2376#else
2377 fd = (errno = ENOSYS, -1);
2378#endif
2379
2380 XPUSHs (newmortalFH (fd, O_RDWR));
2381}
2382
2383void
2384timerfd_create (int clockid, int flags = 0)
2385 PPCODE:
2386{
2387 int fd;
2388#if HAVE_TIMERFD
2389 fd = timerfd_create (clockid, flags);
2390#else
2391 fd = (errno = ENOSYS, -1);
2392#endif
2393
2394 XPUSHs (newmortalFH (fd, O_RDWR));
2395}
2396
2397void
2398timerfd_settime (SV *fh, int flags, NV interval, NV value)
2399 PPCODE:
2400{
2401 int fd = s_fileno_croak (fh, 0);
2402#if HAVE_TIMERFD
2403 int res;
2404 struct itimerspec its, ots;
2405
2406 ts_set (&its.it_interval, interval);
2407 ts_set (&its.it_value , value);
2408 res = timerfd_settime (fd, flags, &its, &ots);
2409
2410 if (!res)
2411 {
2412 EXTEND (SP, 2);
2413 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2414 PUSHs (newSVnv (ts_get (&ots.it_value)));
2415 }
2416#else
2417 errno = ENOSYS;
2418#endif
2419}
2420
2421void
2422timerfd_gettime (SV *fh)
2423 PPCODE:
2424{
2425 int fd = s_fileno_croak (fh, 0);
2426#if HAVE_TIMERFD
2427 int res;
2428 struct itimerspec ots;
2429 res = timerfd_gettime (fd, &ots);
2430
2431 if (!res)
2432 {
2433 EXTEND (SP, 2);
2434 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2435 PUSHs (newSVnv (ts_get (&ots.it_value)));
2436 }
2437#else
2438 errno = ENOSYS;
2439#endif
2440}
2441
2442UV
2443get_fdlimit ()
2444 CODE:
2445#if HAVE_RLIMITS
2446 struct rlimit rl;
2447 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2448 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2449#endif
2450 XSRETURN_UNDEF;
2451 OUTPUT:
2452 RETVAL
2453
2454void
2455min_fdlimit (UV limit = 0x7fffffffU)
2456 CODE:
2457{
2458#if HAVE_RLIMITS
2459 struct rlimit rl;
2460 rlim_t orig_rlim_max;
2461 UV bit;
2462
2463 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2464 goto fail;
2465
2466 if (rl.rlim_cur == RLIM_INFINITY)
2467 XSRETURN_YES;
2468
2469 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2470
2471 if (rl.rlim_cur < limit)
2472 {
2473 rl.rlim_cur = limit;
2474
2475 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2476 rl.rlim_max = rl.rlim_cur;
2477 }
2478
2479 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2480 XSRETURN_YES;
2481
2482 if (errno == EPERM)
2483 {
2484 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2485 /* our limit overflows a system-wide limit */
2486 /* try an adaptive algorithm, but do not lower the hardlimit */
2487 rl.rlim_max = 0;
2488 for (bit = 0x40000000U; bit; bit >>= 1)
2489 {
2490 rl.rlim_max |= bit;
2491 rl.rlim_cur = rl.rlim_max;
2492
2493 /* nevr decrease the hard limit */
2494 if (rl.rlim_max < orig_rlim_max)
2495 break;
2496
2497 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2498 rl.rlim_max &= ~bit; /* too high, remove bit again */
2499 }
2500
2501 /* now, raise the soft limit to the max permitted */
2502 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2503 {
2504 rl.rlim_cur = rl.rlim_max;
2505 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2506 errno = EPERM;
2507 }
2508 }
2509#endif
2510 fail:
2511 XSRETURN_UNDEF;
2512}
2513
2514void _on_next_submit (SV *cb)
2515 CODE:
2516 SvREFCNT_dec (on_next_submit);
2517 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2518
1877PROTOTYPES: DISABLE 2519PROTOTYPES: DISABLE
2520
2521MODULE = IO::AIO PACKAGE = IO::AIO::WD
2522
2523BOOT:
2524{
2525 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2526 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2527}
2528
2529void
2530DESTROY (SV *self)
2531 CODE:
2532{
2533 aio_wd wd = SvAIO_WD (self);
2534#if HAVE_AT
2535 {
2536 SV *callback = &PL_sv_undef;
2537 dREQ; /* clobbers next_pri :/ */
2538 next_pri = req->pri; /* restore next_pri */
2539 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2540 req->type = EIO_WD_CLOSE;
2541 req->wd = wd;
2542 REQ_SEND;
2543 }
2544#else
2545 eio_wd_close_sync (wd);
2546#endif
2547}
1878 2548
1879MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2549MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880 2550
1881void 2551void
1882cancel (aio_req_ornot req) 2552cancel (aio_req_ornot req)
1883 CODE: 2553 CODE:
1884 req_cancel (req); 2554 eio_cancel (req);
1885 2555
1886void 2556void
1887cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2557cb (aio_req_ornot req, SV *callback = NO_INIT)
1888 CODE: 2558 PPCODE:
2559{
2560 if (GIMME_V != G_VOID)
2561 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2562
2563 if (items > 1)
2564 {
2565 SV *cb_cv = get_cb (callback);
2566
1889 SvREFCNT_dec (req->callback); 2567 SvREFCNT_dec (req->callback);
1890 req->callback = newSVsv (callback); 2568 req->callback = SvREFCNT_inc (cb_cv);
2569 }
2570}
1891 2571
1892MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2572MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893 2573
1894void 2574void
1895add (aio_req grp, ...) 2575add (aio_req grp, ...)
1896 PPCODE: 2576 PPCODE:
1897{ 2577{
1898 int i; 2578 int i;
1899 aio_req req;
1900
1901 if (main_sig && !block_sig_level)
1902 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903 2579
1904 if (grp->int1 == 2) 2580 if (grp->int1 == 2)
1905 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2581 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906 2582
1907 for (i = 1; i < items; ++i ) 2583 for (i = 1; i < items; ++i )
1908 { 2584 {
2585 aio_req req;
2586
1909 if (GIMME_V != G_VOID) 2587 if (GIMME_V != G_VOID)
1910 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2588 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911 2589
1912 req = SvAIO_REQ (ST (i)); 2590 req = SvAIO_REQ (ST (i));
1913 2591
1914 if (req) 2592 if (req)
1915 { 2593 eio_grp_add (grp, req);
1916 ++grp->size;
1917 req->grp = grp;
1918
1919 req->grp_prev = 0;
1920 req->grp_next = grp->grp_first;
1921
1922 if (grp->grp_first)
1923 grp->grp_first->grp_prev = req;
1924
1925 grp->grp_first = req;
1926 }
1927 } 2594 }
1928} 2595}
1929 2596
1930void 2597void
1931cancel_subs (aio_req_ornot req) 2598cancel_subs (aio_req_ornot req)
… …
1940 AV *av; 2607 AV *av;
1941 2608
1942 grp->errorno = errno; 2609 grp->errorno = errno;
1943 2610
1944 av = newAV (); 2611 av = newAV ();
2612 av_extend (av, items - 1);
1945 2613
1946 for (i = 1; i < items; ++i ) 2614 for (i = 1; i < items; ++i )
1947 av_push (av, newSVsv (ST (i))); 2615 av_push (av, newSVsv (ST (i)));
1948 2616
1949 SvREFCNT_dec (grp->sv1); 2617 SvREFCNT_dec (grp->sv1);
… …
1956 grp->errorno = errorno; 2624 grp->errorno = errorno;
1957 2625
1958void 2626void
1959limit (aio_req grp, int limit) 2627limit (aio_req grp, int limit)
1960 CODE: 2628 CODE:
1961 grp->int2 = limit; 2629 eio_grp_limit (grp, limit);
1962 aio_grp_feed (grp);
1963 2630
1964void 2631void
1965feed (aio_req grp, SV *callback=&PL_sv_undef) 2632feed (aio_req grp, SV *callback = &PL_sv_undef)
1966 CODE: 2633 CODE:
1967{ 2634{
1968 SvREFCNT_dec (grp->sv2); 2635 SvREFCNT_dec (grp->sv2);
1969 grp->sv2 = newSVsv (callback); 2636 grp->sv2 = newSVsv (callback);
2637 grp->feed = aio_grp_feed;
1970 2638
1971 if (grp->int2 <= 0) 2639 if (grp->int2 <= 0)
1972 grp->int2 = 2; 2640 grp->int2 = 2;
1973 2641
1974 aio_grp_feed (grp); 2642 eio_grp_limit (grp, grp->int2);
1975} 2643}
1976 2644

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