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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.96 by root, Sat Dec 23 04:49:37 2006 UTC vs.
Revision 1.269 by root, Thu Nov 29 21:48:44 2018 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#if !defined mg_findext
18 10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
19#include <pthread.h> 11#endif
20 12
21#include <stddef.h> 13#include <stddef.h>
22#include <stdlib.h> 14#include <stdlib.h>
23#include <errno.h> 15#include <errno.h>
24#include <sys/time.h>
25#include <sys/select.h>
26#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
27#include <sys/stat.h> 18#include <sys/stat.h>
28#include <limits.h> 19#include <limits.h>
29#include <unistd.h>
30#include <fcntl.h> 20#include <fcntl.h>
31#include <signal.h>
32#include <sched.h> 21#include <sched.h>
33 22
34#if HAVE_SENDFILE 23/* the incompetent fool that created musl keeps __linux__, refuses
35# if __linux 24 * to implement any linux standard apis, and also has no way to test
25 * for his broken iplementation. don't complain to me if this fails
26 * for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
46#ifdef _WIN32
47
48 // perl overrides all those nice libc functions
49
50 #undef malloc
51 #undef free
52 #undef open
53 #undef read
54 #undef write
55 #undef send
56 #undef recv
57 #undef stat
58 #undef lstat
59 #undef fstat
60 #undef truncate
61 #undef ftruncate
62 #undef open
63 #undef link
64 #undef close
65 #undef unlink
66 #undef mkdir
67 #undef rmdir
68 #undef rename
69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
79 #undef utime
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
86 #include <sys/time.h>
36# include <sys/sendfile.h> 87 #include <sys/select.h>
37# elif __freebsd 88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "config.h"
110
111#if HAVE_SYS_MKDEV_H
38# include <sys/socket.h> 112# include <sys/mkdev.h>
113#elif HAVE_SYS_SYSMACROS_H
114# include <sys/sysmacros.h>
115#endif
116
117#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
39# include <sys/uio.h> 118# include <sys/mman.h>
40# elif __hpux 119#endif
41# include <sys/socket.h> 120
42# elif __solaris /* not yet */ 121#if HAVE_ST_XTIMENSEC
122# define ATIMENSEC PL_statcache.st_atimensec
123# define MTIMENSEC PL_statcache.st_mtimensec
124# define CTIMENSEC PL_statcache.st_ctimensec
125#elif HAVE_ST_XTIMESPEC
126# define ATIMENSEC PL_statcache.st_atim.tv_nsec
127# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
128# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
129#else
130# define ATIMENSEC 0
131# define MTIMENSEC 0
132# define CTIMENSEC 0
133#endif
134
135#if HAVE_ST_BIRTHTIMENSEC
136# define BTIMESEC PL_statcache.st_birthtime
137# define BTIMENSEC PL_statcache.st_birthtimensec
138#elif HAVE_ST_BIRTHTIMESPEC
139# define BTIMESEC PL_statcache.st_birthtim.tv_sec
140# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
141#else
142# define BTIMESEC 0
143# define BTIMENSEC 0
144#endif
145
146#if HAVE_ST_GEN
147# define ST_GEN PL_statcache.st_gen
148#else
149# define ST_GEN 0
150#endif
151
152#include "schmorp.h"
153
154#if HAVE_EVENTFD
43# include <sys/sendfile.h> 155# include <sys/eventfd.h>
156#endif
157
158#if HAVE_TIMERFD
159# include <sys/timerfd.h>
160#endif
161
162#if HAVE_RLIMITS
163 #include <sys/time.h>
164 #include <sys/resource.h>
165#endif
166
167typedef SV SV8; /* byte-sv, used for argument-checking */
168typedef int aio_rfd; /* read file desriptor */
169typedef int aio_wfd; /* write file descriptor */
170
171static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
172
173#define EIO_REQ_MEMBERS \
174 SV *callback; \
175 SV *sv1, *sv2; \
176 SV *sv3, *sv4; \
177 STRLEN stroffset; \
178 SV *self;
179
180#define EIO_NO_WRAPPERS 1
181
182#include "libeio/eio.h"
183
184static int req_invoke (eio_req *req);
185#define EIO_FINISH(req) req_invoke (req)
186static void req_destroy (eio_req *grp);
187#define EIO_DESTROY(req) req_destroy (req)
188
189#include "libeio/eio.c"
190
191#if !HAVE_POSIX_FADVISE
192# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
193#endif
194
195#if !HAVE_POSIX_MADVISE
196# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
197#endif
198
199#ifndef MAP_ANONYMOUS
200# ifdef MAP_ANON
201# define MAP_ANONYMOUS MAP_ANON
44# else 202# else
45# error sendfile support requested but not available 203# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46# endif 204# endif
47#endif 205#endif
48 206
49/* number of seconds after which idle threads exit */ 207#ifndef makedev
50#define IDLE_TIMEOUT 10 208# define makedev(maj,min) (((maj) << 8) | (min))
51
52/* used for struct dirent, AIX doesn't provide it */
53#ifndef NAME_MAX
54# define NAME_MAX 4096
55#endif
56
57#ifndef PTHREAD_STACK_MIN
58/* care for broken platforms, e.g. windows */
59# define PTHREAD_STACK_MIN 16384
60#endif
61
62#if __ia64
63# define STACKSIZE 65536
64#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65# define STACKSIZE PTHREAD_STACK_MIN
66#else
67# define STACKSIZE 16384
68#endif
69
70/* wether word reads are potentially non-atomic.
71 * this is conservatice, likely most arches this runs
72 * on have atomic word read/writes.
73 */
74#ifndef WORDACCESS_UNSAFE
75# if __i386 || __x86_64
76# define WORDACCESS_UNSAFE 0
77# else
78# define WORDACCESS_UNSAFE 1
79# endif 209#endif
210#ifndef major
211# define major(dev) ((dev) >> 8)
80#endif 212#endif
213#ifndef minor
214# define minor(dev) ((dev) & 0xff)
215#endif
81 216
82/* buffer size for various temporary buffers */ 217/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
83#define AIO_BUFSIZE 65536 218#ifdef __sun
219# undef PAGESIZE
220#endif
84 221
85#define dBUF \ 222#if PAGESIZE <= 0
86 char *aio_buf; \ 223# define PAGESIZE sysconf (_SC_PAGESIZE)
87 LOCK (wrklock); \ 224#endif
88 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 225
89 UNLOCK (wrklock); \ 226/*****************************************************************************/
90 if (!aio_buf) \ 227
228#if !_POSIX_MAPPED_FILES
229# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
230# define munmap(addr,length) EIO_ENOSYS ()
231#endif
232
233#if !_POSIX_MEMORY_PROTECTION
234# define mprotect(addr,len,prot) EIO_ENOSYS ()
235#endif
236
237#if !MREMAP_MAYMOVE
238# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
239#endif
240
241#define FOREIGN_MAGIC PERL_MAGIC_ext
242
243static int ecb_cold
244mmap_free (pTHX_ SV *sv, MAGIC *mg)
245{
246 int old_errno = errno;
247 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
248 errno = old_errno;
249
250 mg->mg_obj = 0; /* just in case */
251
252 SvREADONLY_off (sv);
253
254 if (SvPVX (sv) != mg->mg_ptr)
255 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
256
257 SvCUR_set (sv, 0);
258 SvPVX (sv) = 0;
259 SvOK_off (sv);
260
91 return -1; 261 return 0;
262}
92 263
93typedef SV SV8; /* byte-sv, used for argument-checking */ 264static MGVTBL mmap_vtbl = {
94 265 0, 0, 0, 0, mmap_free
95enum {
96 REQ_QUIT,
97 REQ_OPEN, REQ_CLOSE,
98 REQ_READ, REQ_WRITE, REQ_READAHEAD,
99 REQ_SENDFILE,
100 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101 REQ_FSYNC, REQ_FDATASYNC,
102 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
103 REQ_MKNOD, REQ_READDIR,
104 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105 REQ_GROUP, REQ_NOP,
106 REQ_BUSY,
107}; 266};
108 267
109#define AIO_REQ_KLASS "IO::AIO::REQ" 268static int ecb_cold
110#define AIO_GRP_KLASS "IO::AIO::GRP" 269sysfree_free (pTHX_ SV *sv, MAGIC *mg)
111
112typedef struct aio_cb
113{ 270{
114 struct aio_cb *volatile next; 271 free (mg->mg_ptr);
272 mg->mg_obj = 0; /* just in case */
115 273
116 SV *callback, *fh; 274 SvREADONLY_off (sv);
117 SV *sv1, *sv2;
118 void *ptr1, *ptr2;
119 off_t offs;
120 size_t size;
121 ssize_t result;
122 275
123 STRLEN stroffset; 276 if (SvPVX (sv) != mg->mg_ptr)
124 int type; 277 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
125 int int1, int2;
126 int errorno;
127 mode_t mode; /* open */
128 278
129 unsigned char flags; 279 SvCUR_set (sv, 0);
130 unsigned char pri; 280 SvPVX (sv) = 0;
281 SvOK_off (sv);
131 282
132 SV *self; /* the perl counterpart of this request, if any */ 283 return 0;
133 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 284}
134} aio_cb;
135 285
136enum { 286static MGVTBL sysfree_vtbl = {
137 FLAG_CANCELLED = 0x01, /* request was cancelled */ 287 0, 0, 0, 0, sysfree_free
138 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140}; 288};
141 289
142typedef aio_cb *aio_req; 290/*****************************************************************************/
143typedef aio_cb *aio_req_ornot;
144 291
145enum { 292/* helper: set scalar to foreign ptr with custom free */
146 PRI_MIN = -4, 293static void
147 PRI_MAX = 4, 294sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
148
149 DEFAULT_PRI = 0,
150 PRI_BIAS = -PRI_MIN,
151 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152};
153
154#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156static unsigned int max_poll_time = 0;
157static unsigned int max_poll_reqs = 0;
158
159/* calculcate time difference in ~1/AIO_TICKS of a second */
160static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161{ 295{
162 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 296 sv_force_normal (sv);
163 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
164}
165 297
166static pthread_t main_tid; 298 /* we store the length in mg_obj, as namlen is I32 :/ */
167static int main_sig; 299 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
168static int block_sig_level; 300 ->mg_obj = (SV *)length;
169 301
170void block_sig () 302 SvUPGRADE (sv, SVt_PV); /* nop... */
171{
172 sigset_t ss;
173 303
174 if (block_sig_level++) 304 if (SvLEN (sv))
305 Safefree (SvPVX (sv));
306
307 SvPVX (sv) = (char *)addr;
308 SvCUR_set (sv, length);
309 SvLEN_set (sv, 0);
310 SvPOK_only (sv);
311}
312
313static void
314sv_clear_foreign (SV *sv)
315{
316 /* todo: iterate over magic and only free ours, but of course */
317 /* the perl5porters will call that (correct) behaviour buggy */
318 sv_unmagic (sv, FOREIGN_MAGIC);
319}
320
321/*****************************************************************************/
322
323/* defines all sorts of constants to 0 unless they are already defined */
324/* also provides const_iv_ and const_niv_ macros for them */
325#include "def0.h"
326
327/*****************************************************************************/
328
329static void
330fiemap (eio_req *req)
331{
332 req->result = -1;
333
334#if HAVE_FIEMAP
335 /* assume some c99 */
336 struct fiemap *fiemap = 0;
337 size_t end_offset;
338 int count = req->int3;
339
340 req->flags |= EIO_FLAG_PTR1_FREE;
341
342 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
343 /* increase in 3.5kb steps */
344 if (count < 0)
345 count = 8;
346
347 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
348 errno = ENOMEM;
349 if (!fiemap)
175 return; 350 return;
176 351
177 if (!main_sig) 352 req->ptr1 = fiemap;
353
354 fiemap->fm_start = req->offs;
355 fiemap->fm_length = req->size;
356 fiemap->fm_flags = req->int2;
357 fiemap->fm_extent_count = count;
358
359 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
178 return; 360 return;
179 361
180 sigemptyset (&ss); 362 if (req->int3 >= 0 /* not autosizing */
181 sigaddset (&ss, main_sig); 363 || !fiemap->fm_mapped_extents /* no more extents */
182 pthread_sigmask (SIG_BLOCK, &ss, 0); 364 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
183} 365 goto done;
184 366
185void unblock_sig () 367 /* else we have to loop -
186{ 368 * it would be tempting (actually I tried that first) to just query the
187 sigset_t ss; 369 * number of extents needed, but linux often feels like not returning all
370 * extents, without telling us it left any out. this complicates
371 * this quite a bit.
372 */
188 373
189 if (--block_sig_level) 374 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
190 return;
191 375
192 if (!main_sig) 376 for (;;)
193 return;
194
195 sigemptyset (&ss);
196 sigaddset (&ss, main_sig);
197 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198}
199
200static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202static unsigned int started, idle, wanted;
203
204#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206#else
207# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208#endif
209
210#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213/* worker threads management */
214static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216typedef struct worker {
217 /* locked by wrklock */
218 struct worker *prev, *next;
219
220 pthread_t tid;
221
222 /* locked by reslock, reqlock or wrklock */
223 aio_req req; /* currently processed request */
224 void *dbuf;
225 DIR *dirp;
226} worker;
227
228static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230static void worker_clear (worker *wrk)
231{
232 if (wrk->dirp)
233 { 377 {
234 closedir (wrk->dirp); 378 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
235 wrk->dirp = 0; 379 char scratch[3072];
236 } 380 struct fiemap *incmap = (struct fiemap *)scratch;
237 381
238 if (wrk->dbuf) 382 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
239 { 383 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
240 free (wrk->dbuf); 384 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
241 wrk->dbuf = 0; 385 incmap->fm_flags = fiemap->fm_flags;
242 } 386 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
243}
244 387
245static void worker_free (worker *wrk) 388 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
246{
247 wrk->next->prev = wrk->prev;
248 wrk->prev->next = wrk->next;
249
250 free (wrk);
251}
252
253static volatile unsigned int nreqs, nready, npending;
254static volatile unsigned int max_idle = 4;
255static volatile unsigned int max_outstanding = 0xffffffff;
256static int respipe [2];
257
258static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262#if WORDACCESS_UNSAFE
263
264static unsigned int get_nready ()
265{
266 unsigned int retval;
267
268 LOCK (reqlock);
269 retval = nready;
270 UNLOCK (reqlock);
271
272 return retval;
273}
274
275static unsigned int get_npending ()
276{
277 unsigned int retval;
278
279 LOCK (reslock);
280 retval = npending;
281 UNLOCK (reslock);
282
283 return retval;
284}
285
286static unsigned int get_nthreads ()
287{
288 unsigned int retval;
289
290 LOCK (wrklock);
291 retval = started;
292 UNLOCK (wrklock);
293
294 return retval;
295}
296
297#else
298
299# define get_nready() nready
300# define get_npending() npending
301# define get_nthreads() started
302
303#endif
304
305/*
306 * a somewhat faster data structure might be nice, but
307 * with 8 priorities this actually needs <20 insns
308 * per shift, the most expensive operation.
309 */
310typedef struct {
311 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312 int size;
313} reqq;
314
315static reqq req_queue;
316static reqq res_queue;
317
318int reqq_push (reqq *q, aio_req req)
319{
320 int pri = req->pri;
321 req->next = 0;
322
323 if (q->qe[pri])
324 {
325 q->qe[pri]->next = req;
326 q->qe[pri] = req;
327 }
328 else
329 q->qe[pri] = q->qs[pri] = req;
330
331 return q->size++;
332}
333
334aio_req reqq_shift (reqq *q)
335{
336 int pri;
337
338 if (!q->size)
339 return 0; 389 return;
340 390
341 --q->size; 391 if (!incmap->fm_mapped_extents)
392 goto done;
342 393
343 for (pri = NUM_PRI; pri--; ) 394 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
344 { 395 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
345 aio_req req = q->qs[pri]; 396 errno = ENOMEM;
346
347 if (req) 397 if (!fiemap)
398 return;
399
400 req->ptr1 = fiemap;
401
402 for (count = 0; count < incmap->fm_mapped_extents; ++count)
348 { 403 {
349 if (!(q->qs[pri] = req->next)) 404 struct fiemap_extent *e = incmap->fm_extents + count;
350 q->qe[pri] = 0;
351 405
352 return req; 406 if (e->fe_logical + e->fe_length >= end_offset)
407 goto done;
408
409 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
410
411 if (e->fe_flags & FIEMAP_EXTENT_LAST)
412 goto done;
413
353 } 414 }
354 } 415 }
355 416
356 abort (); 417done:
357} 418 req->result = 0;
358 419
359static int poll_cb (); 420#else
360static int req_invoke (aio_req req); 421 errno = ENOSYS;
422#endif
423}
424
425/*****************************************************************************/
426
427static int close_fd; /* dummy fd to close fds via dup2 */
428
429enum {
430 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
431};
432
433typedef eio_req *aio_req;
434typedef eio_req *aio_req_ornot;
435typedef eio_wd aio_wd;
436
437static SV *on_next_submit;
438static int next_pri = EIO_PRI_DEFAULT;
439static int max_outstanding;
440
441static s_epipe respipe;
442
361static void req_free (aio_req req); 443static void req_destroy (aio_req req);
362static void req_cancel (aio_req req); 444static void req_cancel (aio_req req);
363 445
446static void
447want_poll (void)
448{
449 /* write a dummy byte to the pipe so fh becomes ready */
450 s_epipe_signal (&respipe);
451}
452
453static void
454done_poll (void)
455{
456 /* read any signals sent by the worker threads */
457 s_epipe_drain (&respipe);
458}
459
364/* must be called at most once */ 460/* must be called at most once */
365static SV *req_sv (aio_req req, const char *klass) 461static SV *
462req_sv (aio_req req, HV *stash)
366{ 463{
367 if (!req->self) 464 if (!req->self)
368 { 465 {
369 req->self = (SV *)newHV (); 466 req->self = (SV *)newHV ();
370 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 467 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371 } 468 }
372 469
373 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 470 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374} 471}
375 472
376static aio_req SvAIO_REQ (SV *sv) 473static SV *
474newSVaio_wd (aio_wd wd)
475{
476 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
477}
478
479static aio_req
480SvAIO_REQ (SV *sv)
377{ 481{
378 MAGIC *mg; 482 MAGIC *mg;
379 483
380 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 484 if (!SvROK (sv)
485 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
486 || (SvSTASH (SvRV (sv)) != aio_grp_stash
487 && SvSTASH (SvRV (sv)) != aio_req_stash
488 && !sv_derived_from (sv, "IO::AIO::REQ")))
381 croak ("object of class " AIO_REQ_KLASS " expected"); 489 croak ("object of class IO::AIO::REQ expected");
382 490
383 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 491 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384 492
385 return mg ? (aio_req)mg->mg_ptr : 0; 493 return mg ? (aio_req)mg->mg_ptr : 0;
386} 494}
387 495
496static aio_wd
497SvAIO_WD (SV *sv)
498{
499 if (!SvROK (sv)
500 || SvTYPE (SvRV (sv)) != SVt_PVMG
501 || SvSTASH (SvRV (sv)) != aio_wd_stash)
502 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
503
504 return (aio_wd)(long)SvIVX (SvRV (sv));
505}
506
507static SV *
508newmortalFH (int fd, int flags)
509{
510 if (fd < 0)
511 return &PL_sv_undef;
512
513 GV *gv = (GV *)sv_newmortal ();
514 char sym[64];
515 int symlen;
516
517 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
518 gv_init (gv, aio_stash, sym, symlen, 0);
519
520 symlen = snprintf (
521 sym,
522 sizeof (sym),
523 "%s&=%d",
524 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525 fd
526 );
527
528 return do_open (gv, sym, symlen, 0, 0, 0, 0)
529 ? (SV *)gv : &PL_sv_undef;
530}
531
532static void
388static void aio_grp_feed (aio_req grp) 533aio_grp_feed (aio_req grp)
389{ 534{
390 block_sig (); 535 if (grp->sv2 && SvOK (grp->sv2))
391
392 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393 { 536 {
394 int old_len = grp->size;
395
396 if (grp->sv2 && SvOK (grp->sv2))
397 {
398 dSP; 537 dSP;
399 538
400 ENTER; 539 ENTER;
401 SAVETMPS; 540 SAVETMPS;
402 PUSHMARK (SP); 541 PUSHMARK (SP);
403 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 542 XPUSHs (req_sv (grp, aio_grp_stash));
404 PUTBACK; 543 PUTBACK;
405 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 544 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406 SPAGAIN; 545 SPAGAIN;
407 FREETMPS; 546 FREETMPS;
408 LEAVE; 547 LEAVE;
409 }
410
411 /* stop if no progress has been made */
412 if (old_len == grp->size)
413 {
414 SvREFCNT_dec (grp->sv2);
415 grp->sv2 = 0;
416 break;
417 }
418 } 548 }
419
420 unblock_sig ();
421} 549}
422 550
423static void aio_grp_dec (aio_req grp) 551static void
552req_submit (eio_req *req)
424{ 553{
425 --grp->size; 554 eio_submit (req);
426 555
427 /* call feeder, if applicable */ 556 if (expect_false (on_next_submit))
428 aio_grp_feed (grp);
429
430 /* finish, if done */
431 if (!grp->size && grp->int1)
432 { 557 {
433 block_sig (); 558 dSP;
559 SV *cb = sv_2mortal (on_next_submit);
434 560
435 if (!req_invoke (grp)) 561 on_next_submit = 0;
436 {
437 req_free (grp);
438 unblock_sig ();
439 croak (0);
440 }
441 562
442 req_free (grp); 563 PUSHMARK (SP);
443 unblock_sig (); 564 PUTBACK;
565 call_sv (cb, G_DISCARD | G_EVAL);
444 } 566 }
445} 567}
446 568
569static int
447static int req_invoke (aio_req req) 570req_invoke (eio_req *req)
448{ 571{
449 dSP;
450
451 if (req->flags & FLAG_SV1_RO_OFF) 572 if (req->flags & FLAG_SV2_RO_OFF)
452 SvREADONLY_off (req->sv1); 573 SvREADONLY_off (req->sv2);
453 574
454 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 575 if (!EIO_CANCELLED (req) && req->callback)
455 { 576 {
577 dSP;
578 static SV *sv_result_cache; /* caches the result integer SV */
579 SV *sv_result;
580
456 ENTER; 581 ENTER;
457 SAVETMPS; 582 SAVETMPS;
458 PUSHMARK (SP); 583 PUSHMARK (SP);
459 EXTEND (SP, 1); 584 EXTEND (SP, 1);
460 585
586 /* do not recreate the result IV from scratch each time */
587 if (expect_true (sv_result_cache))
588 {
589 sv_result = sv_result_cache; sv_result_cache = 0;
590 SvIV_set (sv_result, req->result);
591 SvIOK_only (sv_result);
592 }
593 else
594 {
595 sv_result = newSViv (req->result);
596 SvREADONLY_on (sv_result);
597 }
598
461 switch (req->type) 599 switch (req->type)
462 { 600 {
601 case EIO_WD_OPEN:
602 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
603 break;
604
463 case REQ_READDIR: 605 case EIO_READDIR:
464 { 606 {
465 SV *rv = &PL_sv_undef; 607 SV *rv = &PL_sv_undef;
466 608
467 if (req->result >= 0) 609 if (req->result >= 0)
468 { 610 {
469 int i; 611 int i;
470 char *buf = req->ptr2; 612 char *names = (char *)req->ptr2;
613 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471 AV *av = newAV (); 614 AV *av = newAV ();
472 615
473 av_extend (av, req->result - 1); 616 av_extend (av, req->result - 1);
474 617
475 for (i = 0; i < req->result; ++i) 618 for (i = 0; i < req->result; ++i)
476 { 619 {
477 SV *sv = newSVpv (buf, 0); 620 if (req->int1 & EIO_READDIR_DENTS)
621 {
622 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478 623
624 if (req->int1 & EIO_READDIR_CUSTOM2)
625 {
626 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
627 AV *avent = newAV ();
628
629 av_extend (avent, 2);
630
631 if (!sv_type [ent->type])
632 {
633 sv_type [ent->type] = newSViv (ent->type);
634 SvREADONLY_on (sv_type [ent->type]);
635 }
636
637 av_store (avent, 0, namesv);
638 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
639 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
640
641 av_store (av, i, newRV_noinc ((SV *)avent));
642 }
643 else
479 av_store (av, i, sv); 644 av_store (av, i, namesv);
645
646 ++ent;
647 }
648 else
649 {
650 SV *name = newSVpv (names, 0);
651 av_store (av, i, name);
480 buf += SvCUR (sv) + 1; 652 names += SvCUR (name) + 1;
653 }
481 } 654 }
482 655
483 rv = sv_2mortal (newRV_noinc ((SV *)av)); 656 rv = sv_2mortal (newRV_noinc ((SV *)av));
484 } 657 }
485 658
486 PUSHs (rv); 659 PUSHs (rv);
660
661 if (req->int1 & EIO_READDIR_CUSTOM1)
662 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487 } 663 }
488 break; 664 break;
489 665
490 case REQ_OPEN: 666 case EIO_OPEN:
667 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
668 break;
669
670 case EIO_STATVFS:
671 case EIO_FSTATVFS:
491 { 672 {
492 /* convert fd to fh */ 673 SV *rv = &PL_sv_undef;
493 SV *fh; 674
675#ifndef _WIN32
676 if (req->result >= 0)
677 {
678 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
679 HV *hv = newHV ();
680 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
681 * chooses to make it a struct.
682 */
683 unsigned long fsid = 0;
684 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
494 685
495 PUSHs (sv_2mortal (newSViv (req->result))); 686 rv = sv_2mortal (newRV_noinc ((SV *)hv));
496 PUTBACK;
497 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
498 SPAGAIN;
499 687
500 fh = POPs; 688 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
501 PUSHMARK (SP); 689 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
690 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
691 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
692 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
693 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
694 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
695 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
696 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
697 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
698 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
699 }
700#endif
701
502 XPUSHs (fh); 702 PUSHs (rv);
503 } 703 }
704
504 break; 705 break;
505 706
506 case REQ_GROUP: 707 case EIO_GROUP:
507 req->int1 = 2; /* mark group as finished */ 708 req->int1 = 2; /* mark group as finished */
508 709
509 if (req->sv1) 710 if (req->sv1)
510 { 711 {
511 int i; 712 int i;
… …
515 for (i = 0; i <= AvFILL (av); ++i) 716 for (i = 0; i <= AvFILL (av); ++i)
516 PUSHs (*av_fetch (av, i, 0)); 717 PUSHs (*av_fetch (av, i, 0));
517 } 718 }
518 break; 719 break;
519 720
520 case REQ_NOP: 721 case EIO_NOP:
521 case REQ_BUSY: 722 case EIO_BUSY:
522 break; 723 break;
523 724
524 case REQ_READLINK: 725 case EIO_READLINK:
726 case EIO_REALPATH:
525 if (req->result > 0) 727 if (req->result > 0)
728 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
729 break;
730
731 case EIO_STAT:
732 case EIO_LSTAT:
733 case EIO_FSTAT:
734 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
735
736 if (!(PL_laststatval = req->result))
737 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
738 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
739
740 PUSHs (sv_result);
741 break;
742
743 case EIO_SEEK:
744 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
745 break;
746
747 case EIO_READ:
748 {
749 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
750 *SvEND (req->sv2) = 0;
751 SvPOK_only (req->sv2);
752 SvSETMAGIC (req->sv2);
753 PUSHs (sv_result);
754 }
755 break;
756
757 case EIO_SLURP:
758 {
759 if (req->result >= 0)
760 {
761 /* if length was originally not known, we steal the malloc'ed memory */
762 if (req->flags & EIO_FLAG_PTR2_FREE)
763 {
764 req->flags &= ~EIO_FLAG_PTR2_FREE;
765 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
766 }
767 else
768 {
769 SvCUR_set (req->sv2, req->result);
770 *SvEND (req->sv2) = 0;
771 SvPOK_only (req->sv2);
772 }
773
774 SvSETMAGIC (req->sv2);
775 }
776
777 PUSHs (sv_result);
778 }
779 break;
780
781 case EIO_CUSTOM:
782 if (req->feed == fiemap)
526 { 783 {
527 SvCUR_set (req->sv1, req->result); 784#if HAVE_FIEMAP
528 *SvEND (req->sv1) = 0;
529 PUSHs (req->sv1); 785 if (!req->result)
786 {
787 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
788
789 if (fiemap->fm_extent_count)
790 {
791 AV *av = newAV ();
792 int i;
793
794 while (fiemap->fm_mapped_extents)
795 {
796 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
797 AV *ext_av = newAV ();
798
799 av_store (ext_av, 3, newSVuv (extent->fe_flags));
800 av_store (ext_av, 2, newSVval64 (extent->fe_length));
801 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
802 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
803
804 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
805 }
806
807 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
808 }
809 else
810 {
811 SvIV_set (sv_result, fiemap->fm_mapped_extents);
812 PUSHs (sv_result);
813 }
814 }
815#endif
530 } 816 }
817 else
818 PUSHs (sv_result);
531 break; 819 break;
532 820
533 case REQ_STAT: 821 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
534 case REQ_LSTAT: 822 if (req->result > 0)
535 case REQ_FSTAT: 823 SvIV_set (sv_result, 0);
536 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 824 /* FALLTHROUGH */
537 PL_laststatval = req->result;
538 PL_statcache = *(Stat_t *)(req->ptr2);
539 PUSHs (sv_2mortal (newSViv (req->result)));
540 break;
541
542 case REQ_READ:
543 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
544 *SvEND (req->sv1) = 0;
545 PUSHs (sv_2mortal (newSViv (req->result)));
546 break;
547 825
548 default: 826 default:
549 PUSHs (sv_2mortal (newSViv (req->result))); 827 PUSHs (sv_result);
550 break; 828 break;
551 } 829 }
552 830
553 errno = req->errorno; 831 errno = req->errorno;
554 832
555 PUTBACK; 833 PUTBACK;
556 call_sv (req->callback, G_VOID | G_EVAL); 834 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557 SPAGAIN; 835 SPAGAIN;
836
837 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
838 SvREFCNT_dec (sv_result);
839 else
840 sv_result_cache = sv_result;
558 841
559 FREETMPS; 842 FREETMPS;
560 LEAVE; 843 LEAVE;
844
845 PUTBACK;
561 } 846 }
562 847
563 if (req->grp)
564 {
565 aio_req grp = req->grp;
566
567 /* unlink request */
568 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571 if (grp->grp_first == req)
572 grp->grp_first = req->grp_next;
573
574 aio_grp_dec (grp);
575 }
576
577 return !SvTRUE (ERRSV); 848 return !!SvTRUE (ERRSV);
578} 849}
579 850
580static void req_free (aio_req req) 851static void
852req_destroy (aio_req req)
581{ 853{
582 if (req->self) 854 if (req->self)
583 { 855 {
584 sv_unmagic (req->self, PERL_MAGIC_ext); 856 sv_unmagic (req->self, PERL_MAGIC_ext);
585 SvREFCNT_dec (req->self); 857 SvREFCNT_dec (req->self);
586 } 858 }
587 859
588 SvREFCNT_dec (req->fh);
589 SvREFCNT_dec (req->sv1); 860 SvREFCNT_dec (req->sv1);
590 SvREFCNT_dec (req->sv2); 861 SvREFCNT_dec (req->sv2);
862 SvREFCNT_dec (req->sv3);
863 SvREFCNT_dec (req->sv4);
591 SvREFCNT_dec (req->callback); 864 SvREFCNT_dec (req->callback);
592 865
593 if (req->flags & FLAG_PTR2_FREE)
594 free (req->ptr2);
595
596 Safefree (req); 866 free (req);
597} 867}
598 868
869static void
599static void req_cancel_subs (aio_req grp) 870req_cancel_subs (aio_req grp)
600{ 871{
601 aio_req sub;
602
603 if (grp->type != REQ_GROUP) 872 if (grp->type != EIO_GROUP)
604 return; 873 return;
605 874
606 SvREFCNT_dec (grp->sv2); 875 SvREFCNT_dec (grp->sv2);
607 grp->sv2 = 0; 876 grp->sv2 = 0;
608 877
609 for (sub = grp->grp_first; sub; sub = sub->grp_next) 878 eio_grp_cancel (grp);
610 req_cancel (sub);
611} 879}
612 880
613static void req_cancel (aio_req req) 881static void ecb_cold
882create_respipe (void)
614{ 883{
615 req->flags |= FLAG_CANCELLED; 884 if (s_epipe_renew (&respipe))
616 885 croak ("IO::AIO: unable to initialize result pipe");
617 req_cancel_subs (req);
618} 886}
619 887
620static void *aio_proc(void *arg); 888static void
621 889poll_wait (void)
622static void start_thread (void)
623{ 890{
624 sigset_t fullsigset, oldsigset;
625 pthread_attr_t attr;
626
627 worker *wrk = calloc (1, sizeof (worker));
628
629 if (!wrk)
630 croak ("unable to allocate worker thread data");
631
632 pthread_attr_init (&attr);
633 pthread_attr_setstacksize (&attr, STACKSIZE);
634 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635#ifdef PTHREAD_SCOPE_PROCESS
636 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637#endif
638
639 sigfillset (&fullsigset);
640
641 LOCK (wrklock);
642 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645 {
646 wrk->prev = &wrk_first;
647 wrk->next = wrk_first.next;
648 wrk_first.next->prev = wrk;
649 wrk_first.next = wrk;
650 ++started;
651 }
652 else
653 free (wrk);
654
655 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656 UNLOCK (wrklock);
657}
658
659static void maybe_start_thread ()
660{
661 if (get_nthreads () >= wanted)
662 return;
663
664 /* todo: maybe use idle here, but might be less exact */
665 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666 return;
667
668 start_thread ();
669}
670
671static void req_send (aio_req req)
672{
673 block_sig ();
674
675 ++nreqs;
676
677 LOCK (reqlock);
678 ++nready;
679 reqq_push (&req_queue, req);
680 pthread_cond_signal (&reqwait);
681 UNLOCK (reqlock);
682
683 unblock_sig ();
684
685 maybe_start_thread ();
686}
687
688static void end_thread (void)
689{
690 aio_req req;
691
692 Newz (0, req, 1, aio_cb);
693
694 req->type = REQ_QUIT;
695 req->pri = PRI_MAX + PRI_BIAS;
696
697 LOCK (reqlock);
698 reqq_push (&req_queue, req);
699 pthread_cond_signal (&reqwait);
700 UNLOCK (reqlock);
701
702 LOCK (wrklock);
703 --started;
704 UNLOCK (wrklock);
705}
706
707static void set_max_idle (int nthreads)
708{
709 if (WORDACCESS_UNSAFE) LOCK (reqlock);
710 max_idle = nthreads <= 0 ? 1 : nthreads;
711 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712}
713
714static void min_parallel (int nthreads)
715{
716 if (wanted < nthreads)
717 wanted = nthreads;
718}
719
720static void max_parallel (int nthreads)
721{
722 if (wanted > nthreads)
723 wanted = nthreads;
724
725 while (started > wanted)
726 end_thread ();
727}
728
729static void poll_wait ()
730{
731 fd_set rfd;
732
733 while (nreqs) 891 while (eio_nreqs ())
734 { 892 {
735 int size; 893 int size;
736 if (WORDACCESS_UNSAFE) LOCK (reslock); 894
895 X_LOCK (EIO_POOL->reslock);
737 size = res_queue.size; 896 size = EIO_POOL->res_queue.size;
738 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 897 X_UNLOCK (EIO_POOL->reslock);
739 898
740 if (size) 899 if (size)
741 return; 900 return;
742 901
743 maybe_start_thread (); 902 etp_maybe_start_thread (EIO_POOL);
744 903
745 FD_ZERO(&rfd); 904 s_epipe_wait (&respipe);
746 FD_SET(respipe [0], &rfd);
747
748 select (respipe [0] + 1, &rfd, 0, 0, 0);
749 } 905 }
750} 906}
751 907
752static int poll_cb () 908static int
909poll_cb (void)
753{ 910{
754 dSP;
755 int count = 0;
756 int maxreqs = max_poll_reqs;
757 int do_croak = 0;
758 struct timeval tv_start, tv_now;
759 aio_req req;
760
761 if (max_poll_time)
762 gettimeofday (&tv_start, 0);
763
764 block_sig ();
765
766 for (;;) 911 for (;;)
767 { 912 {
768 for (;;) 913 int res = eio_poll ();
914
915 if (res > 0)
916 croak (0);
917
918 if (!max_outstanding || max_outstanding > eio_nreqs ())
919 return res;
920
921 poll_wait ();
922 }
923}
924
925static void ecb_cold
926reinit (void)
927{
928 create_respipe ();
929
930 if (eio_init (want_poll, done_poll) < 0)
931 croak ("IO::AIO: unable to initialise eio library");
932}
933
934/*****************************************************************************/
935
936static SV *
937get_cb (SV *cb_sv)
938{
939 SvGETMAGIC (cb_sv);
940 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
941}
942
943static aio_req ecb_noinline
944dreq (SV *callback)
945{
946 SV *cb_cv;
947 aio_req req;
948 int req_pri = next_pri;
949 next_pri = EIO_PRI_DEFAULT;
950
951 cb_cv = get_cb (callback);
952
953 req = calloc (sizeof (*req), 1);
954 if (!req)
955 croak ("out of memory during eio_req allocation");
956
957 req->callback = SvREFCNT_inc (cb_cv);
958 req->pri = req_pri;
959
960 return req;
961}
962
963#define dREQ \
964 aio_req req = dreq (callback); \
965
966#define REQ_SEND \
967 PUTBACK; \
968 req_submit (req); \
969 SPAGAIN; \
970 \
971 if (GIMME_V != G_VOID) \
972 XPUSHs (req_sv (req, aio_req_stash));
973
974ecb_inline void
975req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
976{
977 if (expect_false (SvROK (path)))
978 {
979 SV *rv = SvRV (path);
980 SV *wdob;
981
982 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
769 { 983 {
770 maybe_start_thread (); 984 path = AvARRAY (rv)[1];
985 wdob = AvARRAY (rv)[0];
771 986
772 LOCK (reslock); 987 if (SvOK (wdob))
773 req = reqq_shift (&res_queue);
774
775 if (req)
776 { 988 {
777 --npending; 989 *wd = SvAIO_WD (wdob);
778 990 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
779 if (!res_queue.size)
780 {
781 /* read any signals sent by the worker threads */
782 char buf [4];
783 while (read (respipe [0], buf, 4) == 4)
784 ;
785 }
786 }
787
788 UNLOCK (reslock);
789
790 if (!req)
791 break;
792
793 --nreqs;
794
795 if (req->type == REQ_GROUP && req->size)
796 {
797 req->int1 = 1; /* mark request as delayed */
798 continue;
799 } 991 }
800 else 992 else
801 { 993 *wd = EIO_INVALID_WD;
802 if (!req_invoke (req))
803 {
804 req_free (req);
805 unblock_sig ();
806 croak (0);
807 }
808
809 count++;
810 }
811
812 req_free (req);
813
814 if (maxreqs && !--maxreqs)
815 break;
816
817 if (max_poll_time)
818 {
819 gettimeofday (&tv_now, 0);
820
821 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822 break;
823 }
824 } 994 }
995 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
996 {
997 *wd = (aio_wd)(long)SvIVX (rv);
998 *wdsv = SvREFCNT_inc_NN (rv);
999 *ptr = ".";
1000 return; /* path set to "." */
1001 }
1002 else
1003 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1004 }
825 1005
826 if (nreqs <= max_outstanding) 1006 *pathsv = newSVsv (path);
1007 *ptr = SvPVbyte_nolen (*pathsv);
1008}
1009
1010static void ecb_noinline
1011req_set_path1 (aio_req req, SV *path)
1012{
1013 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1014}
1015
1016static void ecb_noinline
1017req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1018{
1019 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1020
1021 switch (SvTYPE (rv))
1022 {
1023 case SVt_PVIO:
1024 case SVt_PVLV:
1025 case SVt_PVGV:
1026 req->type = type_fh;
1027 req->sv1 = newSVsv (fh_or_path);
1028 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
827 break; 1029 break;
828 1030
829 poll_wait (); 1031 default:
830 1032 req->type = type_path;
831 ++maxreqs; 1033 req_set_path1 (req, fh_or_path);
1034 break;
832 } 1035 }
833
834 unblock_sig ();
835 return count;
836}
837
838static void create_pipe ()
839{
840 if (pipe (respipe))
841 croak ("unable to initialize result pipe");
842
843 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844 croak ("cannot set result pipe to nonblocking mode");
845
846 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847 croak ("cannot set result pipe to nonblocking mode");
848} 1036}
849 1037
850/*****************************************************************************/ 1038/*****************************************************************************/
851/* work around various missing functions */
852 1039
853#if !HAVE_PREADWRITE 1040static void
854# define pread aio_pread 1041ts_set (struct timespec *ts, NV value)
855# define pwrite aio_pwrite
856
857/*
858 * make our pread/pwrite safe against themselves, but not against
859 * normal read/write by using a mutex. slows down execution a lot,
860 * but that's your problem, not mine.
861 */
862static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865{ 1042{
866 ssize_t res; 1043 ts->tv_sec = value;
867 off_t ooffset; 1044 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
868
869 LOCK (preadwritelock);
870 ooffset = lseek (fd, 0, SEEK_CUR);
871 lseek (fd, offset, SEEK_SET);
872 res = read (fd, buf, count);
873 lseek (fd, ooffset, SEEK_SET);
874 UNLOCK (preadwritelock);
875
876 return res;
877} 1045}
878 1046
879static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1047static NV
1048ts_get (const struct timespec *ts)
880{ 1049{
881 ssize_t res; 1050 return ts->tv_sec + ts->tv_nsec * 1e-9;
882 off_t ooffset;
883
884 LOCK (preadwritelock);
885 ooffset = lseek (fd, 0, SEEK_CUR);
886 lseek (fd, offset, SEEK_SET);
887 res = write (fd, buf, count);
888 lseek (fd, offset, SEEK_SET);
889 UNLOCK (preadwritelock);
890
891 return res;
892} 1051}
893#endif
894 1052
895#if !HAVE_FDATASYNC 1053/*****************************************************************************/
896# define fdatasync fsync
897#endif
898 1054
899#if !HAVE_READAHEAD 1055XS(boot_IO__AIO) ecb_cold;
900# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901 1056
902static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1057MODULE = IO::AIO PACKAGE = IO::AIO
903{
904 dBUF;
905 1058
906 while (count > 0) 1059PROTOTYPES: ENABLE
907 {
908 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909 1060
910 pread (fd, aio_buf, len, offset); 1061BOOT:
911 offset += len;
912 count -= len;
913 }
914
915 errno = 0;
916}
917
918#endif
919
920#if !HAVE_READDIR_R
921# define readdir_r aio_readdir_r
922
923static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926{ 1062{
927 struct dirent *e; 1063 static const struct {
928 int errorno; 1064 const char *name;
1065 IV iv;
1066 } *civ, const_iv[] = {
1067# define const_niv(name, value) { # name, (IV) value },
1068# define const_iv(name) { # name, (IV) name },
1069# define const_eio(name) { # name, (IV) EIO_ ## name },
929 1070
930 LOCK (readdirlock); 1071 /* you have to re-run ./gendef0 after adding/removing any constants here */
1072 /* the first block can be undef if missing */
1073 const_iv (ENOSYS)
1074 const_iv (EXDEV)
1075 const_iv (EBADR)
931 1076
932 e = readdir (dirp); 1077 /* for lseek */
933 errorno = errno; 1078 const_iv (SEEK_DATA)
1079 const_iv (SEEK_HOLE)
934 1080
935 if (e) 1081 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
936 { 1082 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
937 *res = ent; 1083 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
938 strcpy (ent->d_name, e->d_name); 1084 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
939 } 1085 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
940 else 1086 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
941 *res = 0;
942 1087
943 UNLOCK (readdirlock); 1088 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
1089 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
1090 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1091 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1092 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
944 1093
945 errno = errorno; 1094 /* the second block will be 0 when missing */
946 return e ? 0 : -1; 1095 const_iv (O_ACCMODE)
947}
948#endif
949 1096
950/* sendfile always needs emulation */ 1097 const_iv (O_RDONLY)
951static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1098 const_iv (O_WRONLY)
952{ 1099 const_iv (O_RDWR)
953 ssize_t res; 1100 const_iv (O_CREAT)
1101 const_iv (O_TRUNC)
1102 const_iv (O_EXCL)
1103 const_iv (O_APPEND)
954 1104
955 if (!count) 1105 const_iv (O_ASYNC)
956 return 0; 1106 const_iv (O_DIRECT)
1107 const_iv (O_NOATIME)
957 1108
958#if HAVE_SENDFILE 1109 const_iv (O_CLOEXEC)
959# if __linux 1110 const_iv (O_NOCTTY)
960 res = sendfile (ofd, ifd, &offset, count); 1111 const_iv (O_NOFOLLOW)
1112 const_iv (O_NONBLOCK)
1113 const_iv (O_EXEC)
1114 const_iv (O_SEARCH)
1115 const_iv (O_DIRECTORY)
1116 const_iv (O_DSYNC)
1117 const_iv (O_RSYNC)
1118 const_iv (O_SYNC)
1119 const_iv (O_PATH)
1120 const_iv (O_TMPFILE)
1121 const_iv (O_TTY_INIT)
961 1122
962# elif __freebsd 1123 const_iv (S_IFIFO)
963 /* 1124 const_iv (S_IFCHR)
964 * Of course, the freebsd sendfile is a dire hack with no thoughts 1125 const_iv (S_IFBLK)
965 * wasted on making it similar to other I/O functions. 1126 const_iv (S_IFLNK)
966 */ 1127 const_iv (S_IFREG)
1128 const_iv (S_IFDIR)
1129 const_iv (S_IFWHT)
1130 const_iv (S_IFSOCK)
1131 const_iv (S_IFMT)
1132
1133 const_iv (ST_RDONLY)
1134 const_iv (ST_NOSUID)
1135 const_iv (ST_NODEV)
1136 const_iv (ST_NOEXEC)
1137 const_iv (ST_SYNCHRONOUS)
1138 const_iv (ST_MANDLOCK)
1139 const_iv (ST_WRITE)
1140 const_iv (ST_APPEND)
1141 const_iv (ST_IMMUTABLE)
1142 const_iv (ST_NOATIME)
1143 const_iv (ST_NODIRATIME)
1144 const_iv (ST_RELATIME)
1145
1146 const_iv (PROT_NONE)
1147 const_iv (PROT_EXEC)
1148 const_iv (PROT_READ)
1149 const_iv (PROT_WRITE)
1150
1151 const_iv (MAP_PRIVATE)
1152 const_iv (MAP_SHARED)
1153 const_iv (MAP_FIXED)
1154 const_iv (MAP_ANONYMOUS)
1155
1156 /* linuxish */
1157 const_iv (MAP_LOCKED)
1158 const_iv (MAP_NORESERVE)
1159 const_iv (MAP_POPULATE)
1160 const_iv (MAP_NONBLOCK)
1161 const_iv (MAP_GROWSDOWN)
1162 const_iv (MAP_32BIT)
1163 const_iv (MAP_HUGETLB)
1164 const_iv (MAP_STACK)
1165
1166 const_iv (MREMAP_MAYMOVE)
1167 const_iv (MREMAP_FIXED)
1168
1169 const_iv (F_DUPFD_CLOEXEC)
1170
1171 const_iv (MSG_CMSG_CLOEXEC)
1172 const_iv (SOCK_CLOEXEC)
1173
1174 const_iv (F_OFD_GETLK)
1175 const_iv (F_OFD_SETLK)
1176 const_iv (F_OFD_GETLKW)
1177
1178 const_iv (FIFREEZE)
1179 const_iv (FITHAW)
1180 const_iv (FITRIM)
1181 const_iv (FICLONE)
1182 const_iv (FICLONERANGE)
1183 const_iv (FIDEDUPERANGE)
1184
1185 const_iv (FS_IOC_GETFLAGS)
1186 const_iv (FS_IOC_SETFLAGS)
1187 const_iv (FS_IOC_GETVERSION)
1188 const_iv (FS_IOC_SETVERSION)
1189 const_iv (FS_IOC_FIEMAP)
1190 const_iv (FS_IOC_FSGETXATTR)
1191 const_iv (FS_IOC_FSSETXATTR)
1192 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1193 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1194 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1195
1196 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1197
1198 const_iv (FS_SECRM_FL)
1199 const_iv (FS_UNRM_FL)
1200 const_iv (FS_COMPR_FL)
1201 const_iv (FS_SYNC_FL)
1202 const_iv (FS_IMMUTABLE_FL)
1203 const_iv (FS_APPEND_FL)
1204 const_iv (FS_NODUMP_FL)
1205 const_iv (FS_NOATIME_FL)
1206 const_iv (FS_DIRTY_FL)
1207 const_iv (FS_COMPRBLK_FL)
1208 const_iv (FS_NOCOMP_FL)
1209 const_iv (FS_ENCRYPT_FL)
1210 const_iv (FS_BTREE_FL)
1211 const_iv (FS_INDEX_FL)
1212 const_iv (FS_JOURNAL_DATA_FL)
1213 const_iv (FS_NOTAIL_FL)
1214 const_iv (FS_DIRSYNC_FL)
1215 const_iv (FS_TOPDIR_FL)
1216 const_iv (FS_FL_USER_MODIFIABLE)
1217
1218 const_iv (FS_XFLAG_REALTIME)
1219 const_iv (FS_XFLAG_PREALLOC)
1220 const_iv (FS_XFLAG_IMMUTABLE)
1221 const_iv (FS_XFLAG_APPEND)
1222 const_iv (FS_XFLAG_SYNC)
1223 const_iv (FS_XFLAG_NOATIME)
1224 const_iv (FS_XFLAG_NODUMP)
1225 const_iv (FS_XFLAG_RTINHERIT)
1226 const_iv (FS_XFLAG_PROJINHERIT)
1227 const_iv (FS_XFLAG_NOSYMLINKS)
1228 const_iv (FS_XFLAG_EXTSIZE)
1229 const_iv (FS_XFLAG_EXTSZINHERIT)
1230 const_iv (FS_XFLAG_NODEFRAG)
1231 const_iv (FS_XFLAG_FILESTREAM)
1232 const_iv (FS_XFLAG_DAX)
1233 const_iv (FS_XFLAG_HASATTR)
1234
1235 const_iv (FIEMAP_FLAG_SYNC)
1236 const_iv (FIEMAP_FLAG_XATTR)
1237 const_iv (FIEMAP_FLAGS_COMPAT)
1238 const_iv (FIEMAP_EXTENT_LAST)
1239 const_iv (FIEMAP_EXTENT_UNKNOWN)
1240 const_iv (FIEMAP_EXTENT_DELALLOC)
1241 const_iv (FIEMAP_EXTENT_ENCODED)
1242 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1243 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1244 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1245 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1246 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1247 const_iv (FIEMAP_EXTENT_MERGED)
1248 const_iv (FIEMAP_EXTENT_SHARED)
1249
1250 const_iv (SPLICE_F_MOVE)
1251 const_iv (SPLICE_F_NONBLOCK)
1252 const_iv (SPLICE_F_MORE)
1253 const_iv (SPLICE_F_GIFT)
1254
1255 const_iv (EFD_CLOEXEC)
1256 const_iv (EFD_NONBLOCK)
1257 const_iv (EFD_SEMAPHORE)
1258
1259 const_iv (CLOCK_REALTIME)
1260 const_iv (CLOCK_MONOTONIC)
1261 const_iv (CLOCK_BOOTTIME)
1262 const_iv (CLOCK_REALTIME_ALARM)
1263 const_iv (CLOCK_BOOTTIME_ALARM)
1264
1265 const_iv (TFD_NONBLOCK)
1266 const_iv (TFD_CLOEXEC)
1267
1268 const_iv (TFD_TIMER_ABSTIME)
1269 const_iv (TFD_TIMER_CANCEL_ON_SET)
1270
1271 /* these are libeio constants, and are independent of gendef0 */
1272 const_eio (SEEK_SET)
1273 const_eio (SEEK_CUR)
1274 const_eio (SEEK_END)
1275
1276 const_eio (MCL_FUTURE)
1277 const_eio (MCL_CURRENT)
1278 const_eio (MCL_ONFAULT)
1279
1280 const_eio (MS_ASYNC)
1281 const_eio (MS_INVALIDATE)
1282 const_eio (MS_SYNC)
1283
1284 const_eio (MT_MODIFY)
1285
1286 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1287 const_eio (SYNC_FILE_RANGE_WRITE)
1288 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1289
1290 const_eio (FALLOC_FL_KEEP_SIZE)
1291 const_eio (FALLOC_FL_PUNCH_HOLE)
1292 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1293 const_eio (FALLOC_FL_ZERO_RANGE)
1294 const_eio (FALLOC_FL_INSERT_RANGE)
1295 const_eio (FALLOC_FL_UNSHARE_RANGE)
1296
1297 const_eio (RENAME_NOREPLACE)
1298 const_eio (RENAME_EXCHANGE)
1299 const_eio (RENAME_WHITEOUT)
1300
1301 const_eio (READDIR_DENTS)
1302 const_eio (READDIR_DIRS_FIRST)
1303 const_eio (READDIR_STAT_ORDER)
1304 const_eio (READDIR_FOUND_UNKNOWN)
1305
1306 const_eio (DT_UNKNOWN)
1307 const_eio (DT_FIFO)
1308 const_eio (DT_CHR)
1309 const_eio (DT_DIR)
1310 const_eio (DT_BLK)
1311 const_eio (DT_REG)
1312 const_eio (DT_LNK)
1313 const_eio (DT_SOCK)
1314 const_eio (DT_WHT)
1315 };
1316
1317 aio_stash = gv_stashpv ("IO::AIO" , 1);
1318 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1319 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1320 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1321
1322 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1323 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1324
1325 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1326
1327 /* allocate dummy pipe fd for aio_close */
967 { 1328 {
968 off_t sbytes; 1329 int pipefd [2];
969 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970 1330
971 if (res < 0 && sbytes) 1331 if (
972 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1332#ifdef _WIN32
973 res = sbytes; 1333 _pipe (pipefd, 1, _O_BINARY) < 0
1334#else
1335 pipe (pipefd) < 0
1336 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1337#endif
1338 || close (pipefd [1]) < 0
1339 )
1340 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1341
1342 close_fd = pipefd [0];
974 } 1343 }
975 1344
976# elif __hpux 1345 reinit ();
977 res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979# elif __solaris
980 {
981 struct sendfilevec vec;
982 size_t sbytes;
983
984 vec.sfv_fd = ifd;
985 vec.sfv_flag = 0;
986 vec.sfv_off = offset;
987 vec.sfv_len = count;
988
989 res = sendfilev (ofd, &vec, 1, &sbytes);
990
991 if (res < 0 && sbytes)
992 res = sbytes;
993 }
994
995# endif
996#else
997 res = -1;
998 errno = ENOSYS;
999#endif
1000
1001 if (res < 0
1002 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003#if __solaris
1004 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005#endif
1006 )
1007 )
1008 {
1009 /* emulate sendfile. this is a major pain in the ass */
1010 dBUF;
1011
1012 res = 0;
1013
1014 while (count)
1015 {
1016 ssize_t cnt;
1017
1018 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020 if (cnt <= 0)
1021 {
1022 if (cnt && !res) res = -1;
1023 break;
1024 }
1025
1026 cnt = write (ofd, aio_buf, cnt);
1027
1028 if (cnt <= 0)
1029 {
1030 if (cnt && !res) res = -1;
1031 break;
1032 }
1033
1034 offset += cnt;
1035 res += cnt;
1036 count -= cnt;
1037 }
1038 }
1039
1040 return res;
1041} 1346}
1042 1347
1043/* read a full directory */
1044static void scandir_ (aio_req req, worker *self)
1045{
1046 DIR *dirp;
1047 union
1048 {
1049 struct dirent d;
1050 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051 } *u;
1052 struct dirent *entp;
1053 char *name, *names;
1054 int memlen = 4096;
1055 int memofs = 0;
1056 int res = 0;
1057 int errorno;
1058
1059 LOCK (wrklock);
1060 self->dirp = dirp = opendir (req->ptr1);
1061 self->dbuf = u = malloc (sizeof (*u));
1062 req->flags |= FLAG_PTR2_FREE;
1063 req->ptr2 = names = malloc (memlen);
1064 UNLOCK (wrklock);
1065
1066 if (dirp && u && names)
1067 for (;;)
1068 {
1069 errno = 0;
1070 readdir_r (dirp, &u->d, &entp);
1071
1072 if (!entp)
1073 break;
1074
1075 name = entp->d_name;
1076
1077 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078 {
1079 int len = strlen (name) + 1;
1080
1081 res++;
1082
1083 while (memofs + len > memlen)
1084 {
1085 memlen *= 2;
1086 LOCK (wrklock);
1087 req->ptr2 = names = realloc (names, memlen);
1088 UNLOCK (wrklock);
1089
1090 if (!names)
1091 break;
1092 }
1093
1094 memcpy (names + memofs, name, len);
1095 memofs += len;
1096 }
1097 }
1098
1099 if (errno)
1100 res = -1;
1101
1102 req->result = res;
1103}
1104
1105/*****************************************************************************/
1106
1107static void *aio_proc (void *thr_arg)
1108{
1109 aio_req req;
1110 struct timespec ts;
1111 worker *self = (worker *)thr_arg;
1112
1113 /* try to distribute timeouts somewhat evenly */
1114 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115 * (1000000000UL / 1024UL);
1116
1117 for (;;)
1118 {
1119 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121 LOCK (reqlock);
1122
1123 for (;;)
1124 {
1125 self->req = req = reqq_shift (&req_queue);
1126
1127 if (req)
1128 break;
1129
1130 ++idle;
1131
1132 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133 == ETIMEDOUT)
1134 {
1135 if (idle > max_idle)
1136 {
1137 --idle;
1138 UNLOCK (reqlock);
1139 LOCK (wrklock);
1140 --started;
1141 UNLOCK (wrklock);
1142 goto quit;
1143 }
1144
1145 /* we are allowed to idle, so do so without any timeout */
1146 pthread_cond_wait (&reqwait, &reqlock);
1147 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148 }
1149
1150 --idle;
1151 }
1152
1153 --nready;
1154
1155 UNLOCK (reqlock);
1156
1157 errno = 0; /* strictly unnecessary */
1158
1159 if (!(req->flags & FLAG_CANCELLED))
1160 switch (req->type)
1161 {
1162 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173 case REQ_CLOSE: req->result = close (req->int1); break;
1174 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1177 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1178 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1179 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1180 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1181
1182 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1183 case REQ_FSYNC: req->result = fsync (req->int1); break;
1184 case REQ_READDIR: scandir_ (req, self); break;
1185
1186 case REQ_BUSY:
1187 {
1188 struct timeval tv;
1189
1190 tv.tv_sec = req->int1;
1191 tv.tv_usec = req->int2;
1192
1193 req->result = select (0, 0, 0, 0, &tv);
1194 }
1195
1196 case REQ_GROUP:
1197 case REQ_NOP:
1198 break;
1199
1200 case REQ_QUIT:
1201 goto quit;
1202
1203 default:
1204 req->result = ENOSYS;
1205 break;
1206 }
1207
1208 req->errorno = errno;
1209
1210 LOCK (reslock);
1211
1212 ++npending;
1213
1214 if (!reqq_push (&res_queue, req))
1215 {
1216 /* write a dummy byte to the pipe so fh becomes ready */
1217 write (respipe [1], &respipe, 1);
1218
1219 /* optionally signal the main thread asynchronously */
1220 if (main_sig)
1221 pthread_kill (main_tid, main_sig);
1222 }
1223
1224 self->req = 0;
1225 worker_clear (self);
1226
1227 UNLOCK (reslock);
1228 }
1229
1230quit:
1231 LOCK (wrklock);
1232 worker_free (self);
1233 UNLOCK (wrklock);
1234
1235 return 0;
1236}
1237
1238/*****************************************************************************/
1239
1240static void atfork_prepare (void)
1241{
1242 LOCK (wrklock);
1243 LOCK (reqlock);
1244 LOCK (reslock);
1245#if !HAVE_PREADWRITE
1246 LOCK (preadwritelock);
1247#endif
1248#if !HAVE_READDIR_R
1249 LOCK (readdirlock);
1250#endif
1251}
1252
1253static void atfork_parent (void)
1254{
1255#if !HAVE_READDIR_R
1256 UNLOCK (readdirlock);
1257#endif
1258#if !HAVE_PREADWRITE
1259 UNLOCK (preadwritelock);
1260#endif
1261 UNLOCK (reslock);
1262 UNLOCK (reqlock);
1263 UNLOCK (wrklock);
1264}
1265
1266static void atfork_child (void)
1267{
1268 aio_req prv;
1269
1270 while (prv = reqq_shift (&req_queue))
1271 req_free (prv);
1272
1273 while (prv = reqq_shift (&res_queue))
1274 req_free (prv);
1275
1276 while (wrk_first.next != &wrk_first)
1277 {
1278 worker *wrk = wrk_first.next;
1279
1280 if (wrk->req)
1281 req_free (wrk->req);
1282
1283 worker_clear (wrk);
1284 worker_free (wrk);
1285 }
1286
1287 started = 0;
1288 idle = 0;
1289 nreqs = 0;
1290 nready = 0;
1291 npending = 0;
1292
1293 close (respipe [0]);
1294 close (respipe [1]);
1295 create_pipe ();
1296
1297 atfork_parent ();
1298}
1299
1300#define dREQ \
1301 aio_req req; \
1302 int req_pri = next_pri; \
1303 next_pri = DEFAULT_PRI + PRI_BIAS; \
1304 \
1305 if (SvOK (callback) && !SvROK (callback)) \
1306 croak ("callback must be undef or of reference type"); \
1307 \
1308 Newz (0, req, 1, aio_cb); \
1309 if (!req) \
1310 croak ("out of memory during aio_req allocation"); \
1311 \
1312 req->callback = newSVsv (callback); \
1313 req->pri = req_pri
1314
1315#define REQ_SEND \
1316 req_send (req); \
1317 \
1318 if (GIMME_V != G_VOID) \
1319 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1320
1321MODULE = IO::AIO PACKAGE = IO::AIO
1322
1323PROTOTYPES: ENABLE
1324
1325BOOT:
1326{
1327 HV *stash = gv_stashpv ("IO::AIO", 1);
1328
1329 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1330 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1331 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1332 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1333 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1334 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1335 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1336
1337 create_pipe ();
1338 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1339}
1340
1341void 1348void
1349reinit ()
1350 PROTOTYPE:
1351
1352void
1342max_poll_reqs (int nreqs) 1353max_poll_reqs (unsigned int nreqs)
1343 PROTOTYPE: $ 1354 PROTOTYPE: $
1344 CODE: 1355 CODE:
1345 max_poll_reqs = nreqs; 1356 eio_set_max_poll_reqs (nreqs);
1346 1357
1347void 1358void
1348max_poll_time (double nseconds) 1359max_poll_time (double nseconds)
1349 PROTOTYPE: $ 1360 PROTOTYPE: $
1350 CODE: 1361 CODE:
1351 max_poll_time = nseconds * AIO_TICKS; 1362 eio_set_max_poll_time (nseconds);
1352 1363
1353void 1364void
1354min_parallel (int nthreads) 1365min_parallel (unsigned int nthreads)
1355 PROTOTYPE: $
1356
1357void
1358max_parallel (int nthreads)
1359 PROTOTYPE: $
1360
1361void
1362max_idle (int nthreads)
1363 PROTOTYPE: $ 1366 PROTOTYPE: $
1364 CODE: 1367 CODE:
1365 set_max_idle (nthreads); 1368 eio_set_min_parallel (nthreads);
1366 1369
1367int 1370void
1368max_outstanding (int maxreqs) 1371max_parallel (unsigned int nthreads)
1369 PROTOTYPE: $ 1372 PROTOTYPE: $
1370 CODE: 1373 CODE:
1371 RETVAL = max_outstanding; 1374 eio_set_max_parallel (nthreads);
1375
1376void
1377max_idle (unsigned int nthreads)
1378 PROTOTYPE: $
1379 CODE:
1380 eio_set_max_idle (nthreads);
1381
1382void
1383idle_timeout (unsigned int seconds)
1384 PROTOTYPE: $
1385 CODE:
1386 eio_set_idle_timeout (seconds);
1387
1388void
1389max_outstanding (unsigned int maxreqs)
1390 PROTOTYPE: $
1391 CODE:
1372 max_outstanding = maxreqs; 1392 max_outstanding = maxreqs;
1373 OUTPUT:
1374 RETVAL
1375 1393
1376void 1394void
1377aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1395aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1378 SV8 * pathname
1379 int flags
1380 int mode
1381 SV * callback
1382 PROTOTYPE: $$$;$
1383 PPCODE: 1396 PPCODE:
1384{ 1397{
1385 dREQ; 1398 dREQ;
1386 1399
1400 req->type = EIO_WD_OPEN;
1401 req_set_path1 (req, pathname);
1402
1403 REQ_SEND;
1404}
1405
1406void
1407aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1408 PPCODE:
1409{
1410 dREQ;
1411
1387 req->type = REQ_OPEN; 1412 req->type = EIO_OPEN;
1388 req->sv1 = newSVsv (pathname); 1413 req_set_path1 (req, pathname);
1389 req->ptr1 = SvPVbyte_nolen (req->sv1);
1390 req->int1 = flags; 1414 req->int1 = flags;
1391 req->mode = mode; 1415 req->int2 = mode;
1392 1416
1393 REQ_SEND; 1417 REQ_SEND;
1394} 1418}
1395 1419
1396void 1420void
1397aio_close (fh,callback=&PL_sv_undef) 1421aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1398 SV * fh
1399 SV * callback
1400 PROTOTYPE: $;$
1401 ALIAS: 1422 ALIAS:
1402 aio_close = REQ_CLOSE
1403 aio_fsync = REQ_FSYNC 1423 aio_fsync = EIO_FSYNC
1404 aio_fdatasync = REQ_FDATASYNC 1424 aio_fdatasync = EIO_FDATASYNC
1425 aio_syncfs = EIO_SYNCFS
1405 PPCODE: 1426 PPCODE:
1406{ 1427{
1428 int fd = s_fileno_croak (fh, 0);
1407 dREQ; 1429 dREQ;
1408 1430
1409 req->type = ix; 1431 req->type = ix;
1410 req->fh = newSVsv (fh); 1432 req->sv1 = newSVsv (fh);
1411 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1433 req->int1 = fd;
1412 1434
1413 REQ_SEND (req); 1435 REQ_SEND;
1414} 1436}
1415 1437
1416void 1438void
1439aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1440 PPCODE:
1441{
1442 int fd = s_fileno_croak (fh, 0);
1443 dREQ;
1444
1445 req->type = EIO_SYNC_FILE_RANGE;
1446 req->sv1 = newSVsv (fh);
1447 req->int1 = fd;
1448 req->offs = offset;
1449 req->size = nbytes;
1450 req->int2 = flags;
1451
1452 REQ_SEND;
1453}
1454
1455void
1456aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1457 PPCODE:
1458{
1459 int fd = s_fileno_croak (fh, 0);
1460 dREQ;
1461
1462 req->type = EIO_FALLOCATE;
1463 req->sv1 = newSVsv (fh);
1464 req->int1 = fd;
1465 req->int2 = mode;
1466 req->offs = offset;
1467 req->size = len;
1468
1469 REQ_SEND;
1470}
1471
1472void
1473aio_close (SV *fh, SV *callback = &PL_sv_undef)
1474 PPCODE:
1475{
1476 int fd = s_fileno_croak (fh, 0);
1477 dREQ;
1478
1479 req->type = EIO_DUP2;
1480 req->int1 = close_fd;
1481 req->sv2 = newSVsv (fh);
1482 req->int2 = fd;
1483
1484 REQ_SEND;
1485}
1486
1487void
1488aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1489 PPCODE:
1490{
1491 int fd = s_fileno_croak (fh, 0);
1492 dREQ;
1493
1494 req->type = EIO_SEEK;
1495 req->sv1 = newSVsv (fh);
1496 req->int1 = fd;
1497 req->offs = SvVAL64 (offset);
1498 req->int2 = whence;
1499
1500 REQ_SEND;
1501}
1502
1503void
1417aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1504aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1418 SV * fh
1419 UV offset
1420 UV length
1421 SV8 * data
1422 UV dataoffset
1423 SV * callback
1424 ALIAS: 1505 ALIAS:
1425 aio_read = REQ_READ 1506 aio_read = EIO_READ
1426 aio_write = REQ_WRITE 1507 aio_write = EIO_WRITE
1427 PROTOTYPE: $$$$$;$
1428 PPCODE: 1508 PPCODE:
1429{ 1509{
1430 STRLEN svlen; 1510 STRLEN svlen;
1511 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1431 char *svptr = SvPVbyte (data, svlen); 1512 char *svptr = SvPVbyte (data, svlen);
1432 1513 UV len = SvUV (length);
1433 SvUPGRADE (data, SVt_PV);
1434 SvPOK_on (data);
1435 1514
1436 if (dataoffset < 0) 1515 if (dataoffset < 0)
1437 dataoffset += svlen; 1516 dataoffset += svlen;
1438 1517
1439 if (dataoffset < 0 || dataoffset > svlen) 1518 if (dataoffset < 0 || dataoffset > svlen)
1440 croak ("data offset outside of string"); 1519 croak ("dataoffset outside of data scalar");
1441 1520
1442 if (ix == REQ_WRITE) 1521 if (ix == EIO_WRITE)
1443 { 1522 {
1444 /* write: check length and adjust. */ 1523 /* write: check length and adjust. */
1445 if (length < 0 || length + dataoffset > svlen) 1524 if (!SvOK (length) || len + dataoffset > svlen)
1446 length = svlen - dataoffset; 1525 len = svlen - dataoffset;
1447 } 1526 }
1448 else 1527 else
1449 { 1528 {
1450 /* read: grow scalar as necessary */ 1529 /* read: check type and grow scalar as necessary */
1530 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1451 svptr = SvGROW (data, length + dataoffset + 1); 1531 svptr = sv_grow (data, len + dataoffset + 1);
1532 else if (SvCUR (data) < len + dataoffset)
1533 croak ("length + dataoffset outside of scalar, and cannot grow");
1452 } 1534 }
1453
1454 if (length < 0)
1455 croak ("length must not be negative");
1456 1535
1457 { 1536 {
1458 dREQ; 1537 dREQ;
1459 1538
1460 req->type = ix; 1539 req->type = ix;
1461 req->fh = newSVsv (fh); 1540 req->sv1 = newSVsv (fh);
1462 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1541 req->int1 = fd;
1463 : IoOFP (sv_2io (fh))); 1542 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464 req->offs = offset;
1465 req->size = length; 1543 req->size = len;
1466 req->sv1 = SvREFCNT_inc (data); 1544 req->sv2 = SvREFCNT_inc (data);
1467 req->ptr1 = (char *)svptr + dataoffset; 1545 req->ptr2 = (char *)svptr + dataoffset;
1468 req->stroffset = dataoffset; 1546 req->stroffset = dataoffset;
1469 1547
1470 if (!SvREADONLY (data)) 1548 if (!SvREADONLY (data))
1471 { 1549 {
1472 SvREADONLY_on (data); 1550 SvREADONLY_on (data);
1473 req->flags |= FLAG_SV1_RO_OFF; 1551 req->flags |= FLAG_SV2_RO_OFF;
1474 } 1552 }
1475 1553
1476 REQ_SEND; 1554 REQ_SEND;
1477 } 1555 }
1478} 1556}
1479 1557
1480void 1558void
1481aio_readlink (path,callback=&PL_sv_undef) 1559aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1482 SV8 * path 1560 ALIAS:
1483 SV * callback 1561 aio_ioctl = EIO_IOCTL
1484 PROTOTYPE: $$;$ 1562 aio_fcntl = EIO_FCNTL
1485 PPCODE: 1563 PPCODE:
1486{ 1564{
1487 SV *data; 1565 int fd = s_fileno_croak (fh, 0);
1566 char *svptr;
1567
1568 if (SvPOK (arg) || !SvNIOK (arg))
1569 {
1570 STRLEN svlen;
1571 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1572#ifdef IOCPARM_LEN
1573 STRLEN need = IOCPARM_LEN (request);
1574#else
1575 STRLEN need = 256;
1576#endif
1577
1578 if (svlen < need)
1579 svptr = SvGROW (arg, need);
1580 }
1581 else
1582 svptr = (char *)SvIV (arg);
1583
1584 {
1585 dREQ;
1586
1587 req->type = ix;
1588 req->sv1 = newSVsv (fh);
1589 req->int1 = fd;
1590 req->int2 = (long)request;
1591 req->sv2 = SvREFCNT_inc (arg);
1592 req->ptr2 = svptr;
1593
1594 REQ_SEND;
1595 }
1596}
1597
1598void
1599aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1600 ALIAS:
1601 aio_readlink = EIO_READLINK
1602 aio_realpath = EIO_REALPATH
1603 PPCODE:
1604{
1488 dREQ; 1605 dREQ;
1489 1606
1490 data = newSV (NAME_MAX);
1491 SvPOK_on (data);
1492
1493 req->type = REQ_READLINK; 1607 req->type = ix;
1494 req->fh = newSVsv (path); 1608 req_set_path1 (req, pathname);
1495 req->ptr2 = SvPVbyte_nolen (req->fh);
1496 req->sv1 = data;
1497 req->ptr1 = SvPVbyte_nolen (data);
1498 1609
1499 REQ_SEND; 1610 REQ_SEND;
1500} 1611}
1501 1612
1502void 1613void
1503aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1614aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1504 SV * out_fh
1505 SV * in_fh
1506 UV in_offset
1507 UV length
1508 SV * callback
1509 PROTOTYPE: $$$$;$
1510 PPCODE: 1615 PPCODE:
1511{ 1616{
1617 int ifd = s_fileno_croak (in_fh , 0);
1618 int ofd = s_fileno_croak (out_fh, 1);
1512 dREQ; 1619 dREQ;
1513 1620
1514 req->type = REQ_SENDFILE; 1621 req->type = EIO_SENDFILE;
1515 req->fh = newSVsv (out_fh); 1622 req->sv1 = newSVsv (out_fh);
1516 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1623 req->int1 = ofd;
1517 req->sv2 = newSVsv (in_fh); 1624 req->sv2 = newSVsv (in_fh);
1518 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1625 req->int2 = ifd;
1519 req->offs = in_offset; 1626 req->offs = in_offset;
1520 req->size = length; 1627 req->size = length;
1521 1628
1522 REQ_SEND; 1629 REQ_SEND;
1523} 1630}
1524 1631
1525void 1632void
1526aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1633aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1527 SV * fh
1528 UV offset
1529 IV length
1530 SV * callback
1531 PROTOTYPE: $$$;$
1532 PPCODE: 1634 PPCODE:
1533{ 1635{
1636 int fd = s_fileno_croak (fh, 0);
1534 dREQ; 1637 dREQ;
1535 1638
1536 req->type = REQ_READAHEAD; 1639 req->type = EIO_READAHEAD;
1537 req->fh = newSVsv (fh); 1640 req->sv1 = newSVsv (fh);
1538 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1641 req->int1 = fd;
1539 req->offs = offset; 1642 req->offs = offset;
1540 req->size = length; 1643 req->size = length;
1541 1644
1542 REQ_SEND; 1645 REQ_SEND;
1543} 1646}
1544 1647
1545void 1648void
1546aio_stat (fh_or_path,callback=&PL_sv_undef) 1649aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1547 SV8 * fh_or_path
1548 SV * callback
1549 ALIAS: 1650 ALIAS:
1550 aio_stat = REQ_STAT 1651 aio_stat = EIO_STAT
1551 aio_lstat = REQ_LSTAT 1652 aio_lstat = EIO_LSTAT
1653 aio_statvfs = EIO_STATVFS
1552 PPCODE: 1654 PPCODE:
1553{ 1655{
1554 dREQ; 1656 dREQ;
1555 1657
1556 req->ptr2 = malloc (sizeof (Stat_t)); 1658 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1557 if (!req->ptr2)
1558 {
1559 req_free (req);
1560 croak ("out of memory during aio_stat statdata allocation");
1561 }
1562
1563 req->flags |= FLAG_PTR2_FREE;
1564
1565 if (SvPOK (fh_or_path))
1566 {
1567 req->type = ix;
1568 req->sv1 = newSVsv (fh_or_path);
1569 req->ptr1 = SvPVbyte_nolen (req->sv1);
1570 }
1571 else
1572 {
1573 req->type = REQ_FSTAT;
1574 req->fh = newSVsv (fh_or_path);
1575 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576 }
1577 1659
1578 REQ_SEND; 1660 REQ_SEND;
1579} 1661}
1580 1662
1581void 1663void
1664st_xtime ()
1665 ALIAS:
1666 st_atime = 0x01
1667 st_mtime = 0x02
1668 st_ctime = 0x04
1669 st_btime = 0x08
1670 st_xtime = 0x0f
1671 PPCODE:
1672 EXTEND (SP, 4);
1673 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1674 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1675 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1676 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1677
1678void
1679st_xtimensec ()
1680 ALIAS:
1681 st_atimensec = 0x01
1682 st_mtimensec = 0x02
1683 st_ctimensec = 0x04
1684 st_btimensec = 0x08
1685 st_xtimensec = 0x0f
1686 st_btimesec = 0x10
1687 st_gen = 0x20
1688 PPCODE:
1689 EXTEND (SP, 4);
1690 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1691 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1692 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1693 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1694 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1695 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1696
1697UV
1698major (UV dev)
1699 ALIAS:
1700 minor = 1
1701 CODE:
1702 RETVAL = ix ? minor (dev) : major (dev);
1703 OUTPUT:
1704 RETVAL
1705
1706UV
1707makedev (UV maj, UV min)
1708 CODE:
1709 RETVAL = makedev (maj, min);
1710 OUTPUT:
1711 RETVAL
1712
1713void
1714aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1715 PPCODE:
1716{
1717 dREQ;
1718
1719 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1720 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1721 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1722
1723 REQ_SEND;
1724}
1725
1726void
1727aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1728 PPCODE:
1729{
1730 dREQ;
1731
1732 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1733 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1734
1735 REQ_SEND;
1736}
1737
1738void
1739aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1740 PPCODE:
1741{
1742 dREQ;
1743
1744 req->int2 = mode;
1745 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1746
1747 REQ_SEND;
1748}
1749
1750void
1751aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1752 PPCODE:
1753{
1754 dREQ;
1755
1756 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1757 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1758 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1759
1760 REQ_SEND;
1761}
1762
1763void
1764aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1765 PPCODE:
1766{
1767 dREQ;
1768
1769 req->type = EIO_READDIR;
1770 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1771
1772 if (flags & EIO_READDIR_DENTS)
1773 req->int1 |= EIO_READDIR_CUSTOM2;
1774
1775 req_set_path1 (req, pathname);
1776
1777 REQ_SEND;
1778}
1779
1780void
1781aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1782 PPCODE:
1783{
1784 dREQ;
1785
1786 req->type = EIO_MKDIR;
1787 req->int2 = mode;
1788 req_set_path1 (req, pathname);
1789
1790 REQ_SEND;
1791}
1792
1793void
1582aio_unlink (pathname,callback=&PL_sv_undef) 1794aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1583 SV8 * pathname
1584 SV * callback
1585 ALIAS: 1795 ALIAS:
1586 aio_unlink = REQ_UNLINK 1796 aio_unlink = EIO_UNLINK
1587 aio_rmdir = REQ_RMDIR 1797 aio_rmdir = EIO_RMDIR
1588 aio_readdir = REQ_READDIR 1798 aio_readdir = EIO_READDIR
1589 PPCODE: 1799 PPCODE:
1590{ 1800{
1591 dREQ; 1801 dREQ;
1592 1802
1593 req->type = ix; 1803 req->type = ix;
1594 req->sv1 = newSVsv (pathname); 1804 req_set_path1 (req, pathname);
1595 req->ptr1 = SvPVbyte_nolen (req->sv1);
1596 1805
1597 REQ_SEND; 1806 REQ_SEND;
1598} 1807}
1599 1808
1600void 1809void
1601aio_link (oldpath,newpath,callback=&PL_sv_undef) 1810aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1602 SV8 * oldpath
1603 SV8 * newpath
1604 SV * callback
1605 ALIAS: 1811 ALIAS:
1606 aio_link = REQ_LINK 1812 aio_link = EIO_LINK
1607 aio_symlink = REQ_SYMLINK 1813 aio_symlink = EIO_SYMLINK
1608 aio_rename = REQ_RENAME 1814 aio_rename = EIO_RENAME
1609 PPCODE: 1815 PPCODE:
1610{ 1816{
1817 eio_wd wd2 = 0;
1611 dREQ; 1818 dREQ;
1612 1819
1613 req->type = ix; 1820 req->type = ix;
1614 req->fh = newSVsv (oldpath); 1821 req_set_path1 (req, oldpath);
1615 req->ptr2 = SvPVbyte_nolen (req->fh); 1822 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1616 req->sv1 = newSVsv (newpath); 1823 req->int3 = (long)wd2;
1617 req->ptr1 = SvPVbyte_nolen (req->sv1);
1618 1824
1619 REQ_SEND; 1825 REQ_SEND;
1620} 1826}
1621 1827
1622void 1828void
1623aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1829aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1624 SV8 * pathname
1625 SV * callback
1626 UV mode
1627 UV dev
1628 PPCODE: 1830 PPCODE:
1629{ 1831{
1832 eio_wd wd2 = 0;
1630 dREQ; 1833 dREQ;
1631 1834
1632 req->type = REQ_MKNOD; 1835 req->type = EIO_RENAME;
1633 req->sv1 = newSVsv (pathname); 1836 req_set_path1 (req, oldpath);
1634 req->ptr1 = SvPVbyte_nolen (req->sv1); 1837 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1635 req->mode = (mode_t)mode; 1838 req->int2 = flags;
1636 req->offs = dev; 1839 req->int3 = (long)wd2;
1637 1840
1638 REQ_SEND; 1841 REQ_SEND;
1639} 1842}
1640 1843
1641void 1844void
1642aio_busy (delay,callback=&PL_sv_undef) 1845aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1643 double delay
1644 SV * callback
1645 PPCODE: 1846 PPCODE:
1646{ 1847{
1647 dREQ; 1848 dREQ;
1648 1849
1649 req->type = REQ_BUSY; 1850 req->type = EIO_MKNOD;
1650 req->int1 = delay < 0. ? 0 : delay; 1851 req->int2 = (mode_t)mode;
1651 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1852 req->offs = dev;
1652 1853 req_set_path1 (req, pathname);
1854
1653 REQ_SEND; 1855 REQ_SEND;
1654} 1856}
1655 1857
1656void 1858void
1657aio_group (callback=&PL_sv_undef) 1859aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1658 SV * callback 1860 ALIAS:
1659 PROTOTYPE: ;$ 1861 aio_mtouch = EIO_MTOUCH
1862 aio_msync = EIO_MSYNC
1660 PPCODE: 1863 PPCODE:
1661{ 1864{
1865 STRLEN svlen;
1866 char *svptr = SvPVbyte (data, svlen);
1867 UV len = SvUV (length);
1868
1869 if (flags < 0)
1870 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1871
1872 if (offset < 0)
1873 offset += svlen;
1874
1875 if (offset < 0 || offset > svlen)
1876 croak ("offset outside of scalar");
1877
1878 if (!SvOK (length) || len + offset > svlen)
1879 len = svlen - offset;
1880
1881 {
1882 dREQ;
1883
1884 req->type = ix;
1885 req->sv2 = SvREFCNT_inc (data);
1886 req->ptr2 = (char *)svptr + offset;
1887 req->size = len;
1888 req->int1 = flags;
1889
1890 REQ_SEND;
1891 }
1892}
1893
1894void
1895aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1896 PPCODE:
1897{
1898 STRLEN svlen;
1899 char *svptr = SvPVbyte (data, svlen);
1900 UV len = SvUV (length);
1901
1902 if (offset < 0)
1903 offset += svlen;
1904
1905 if (offset < 0 || offset > svlen)
1906 croak ("offset outside of scalar");
1907
1908 if (!SvOK (length) || len + offset > svlen)
1909 len = svlen - offset;
1910
1911 {
1912 dREQ;
1913
1914 req->type = EIO_MLOCK;
1915 req->sv2 = SvREFCNT_inc (data);
1916 req->ptr2 = (char *)svptr + offset;
1917 req->size = len;
1918
1919 REQ_SEND;
1920 }
1921}
1922
1923void
1924aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1925 PPCODE:
1926{
1927 dREQ;
1928
1929 req->type = EIO_MLOCKALL;
1930 req->int1 = flags;
1931
1932 REQ_SEND;
1933}
1934
1935void
1936aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1937 PPCODE:
1938{
1939 int fd = s_fileno_croak (fh, 0);
1662 dREQ; 1940 dREQ;
1663 1941
1664 req->type = REQ_GROUP; 1942 req->type = EIO_CUSTOM;
1943 req->sv1 = newSVsv (fh);
1944 req->int1 = fd;
1665 1945
1666 req_send (req); 1946 req->feed = fiemap;
1667 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1947#if HAVE_FIEMAP
1668} 1948 /* keep our fingers crossed that the next two types are 64 bit */
1949 req->offs = start;
1950 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1951 req->int2 = flags;
1952 req->int3 = SvOK (count) ? SvIV (count) : -1;
1953#endif
1669 1954
1955 REQ_SEND;
1956}
1957
1670void 1958void
1671aio_nop (callback=&PL_sv_undef) 1959aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1672 SV * callback 1960 PPCODE:
1961{
1962 char *svptr = 0;
1963
1964 sv_clear_foreign (data);
1965
1966 if (length) /* known length, directly read into scalar */
1967 {
1968 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1969 svptr = sv_grow (data, length + 1);
1970 else if (SvCUR (data) < length)
1971 croak ("length outside of scalar, and cannot grow");
1972 else
1973 svptr = SvPVbyte_nolen (data);
1974 }
1975
1976 {
1977 dREQ;
1978
1979 req->type = EIO_SLURP;
1980 req_set_path1 (req, pathname);
1981 req->offs = offset;
1982 req->size = length;
1983 req->sv2 = SvREFCNT_inc (data);
1984 req->ptr2 = svptr;
1985
1986 if (!SvREADONLY (data))
1987 {
1988 SvREADONLY_on (data);
1989 req->flags |= FLAG_SV2_RO_OFF;
1990 }
1991
1992 REQ_SEND;
1993 }
1994}
1995
1996void
1997aio_busy (double delay, SV *callback = &PL_sv_undef)
1673 PPCODE: 1998 PPCODE:
1674{ 1999{
1675 dREQ; 2000 dREQ;
1676 2001
1677 req->type = REQ_NOP; 2002 req->type = EIO_BUSY;
2003 req->nv1 = delay < 0. ? 0. : delay;
1678 2004
1679 REQ_SEND; 2005 REQ_SEND;
1680} 2006}
1681 2007
2008void
2009aio_group (SV *callback = &PL_sv_undef)
2010 PPCODE:
2011{
2012 dREQ;
2013
2014 req->type = EIO_GROUP;
2015
2016 PUTBACK;
2017 req_submit (req);
2018 SPAGAIN;
2019
2020 XPUSHs (req_sv (req, aio_grp_stash));
2021}
2022
2023void
2024aio_nop (SV *callback = &PL_sv_undef)
2025 ALIAS:
2026 aio_nop = EIO_NOP
2027 aio_sync = EIO_SYNC
2028 PPCODE:
2029{
2030 dREQ;
2031
2032 req->type = ix;
2033
2034 REQ_SEND;
2035}
2036
1682int 2037int
1683aioreq_pri (int pri = 0) 2038aioreq_pri (int pri = NO_INIT)
1684 PROTOTYPE: ;$
1685 CODE: 2039 CODE:
1686 RETVAL = next_pri - PRI_BIAS; 2040 RETVAL = next_pri;
1687 if (items > 0) 2041 if (items > 0)
1688 { 2042 {
1689 if (pri < PRI_MIN) pri = PRI_MIN; 2043 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690 if (pri > PRI_MAX) pri = PRI_MAX; 2044 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691 next_pri = pri + PRI_BIAS; 2045 next_pri = pri;
1692 } 2046 }
1693 OUTPUT: 2047 OUTPUT:
1694 RETVAL 2048 RETVAL
1695 2049
1696void 2050void
1697aioreq_nice (int nice = 0) 2051aioreq_nice (int nice = 0)
1698 CODE: 2052 CODE:
1699 nice = next_pri - nice; 2053 nice = next_pri - nice;
1700 if (nice < PRI_MIN) nice = PRI_MIN; 2054 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701 if (nice > PRI_MAX) nice = PRI_MAX; 2055 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702 next_pri = nice + PRI_BIAS; 2056 next_pri = nice;
1703 2057
1704void 2058void
1705flush () 2059flush ()
1706 PROTOTYPE:
1707 CODE: 2060 CODE:
1708 while (nreqs) 2061 while (eio_nreqs ())
1709 { 2062 {
1710 poll_wait (); 2063 poll_wait ();
1711 poll_cb (); 2064 poll_cb ();
1712 } 2065 }
1713 2066
1714int 2067int
1715poll() 2068poll ()
1716 PROTOTYPE:
1717 CODE: 2069 CODE:
1718 poll_wait (); 2070 poll_wait ();
1719 RETVAL = poll_cb (); 2071 RETVAL = poll_cb ();
1720 OUTPUT: 2072 OUTPUT:
1721 RETVAL 2073 RETVAL
1722 2074
1723int 2075int
1724poll_fileno() 2076poll_fileno ()
1725 PROTOTYPE:
1726 CODE: 2077 CODE:
1727 RETVAL = respipe [0]; 2078 RETVAL = s_epipe_fd (&respipe);
1728 OUTPUT: 2079 OUTPUT:
1729 RETVAL 2080 RETVAL
1730 2081
1731int 2082int
1732poll_cb(...) 2083poll_cb (...)
1733 PROTOTYPE: 2084 PROTOTYPE:
1734 CODE: 2085 CODE:
1735 RETVAL = poll_cb (); 2086 RETVAL = poll_cb ();
1736 OUTPUT: 2087 OUTPUT:
1737 RETVAL 2088 RETVAL
1738 2089
1739void 2090void
1740poll_wait() 2091poll_wait ()
1741 PROTOTYPE:
1742 CODE: 2092 CODE:
1743 poll_wait (); 2093 poll_wait ();
1744 2094
1745void
1746setsig (int signum = SIGIO)
1747 PROTOTYPE: ;$
1748 CODE:
1749{
1750 if (block_sig_level)
1751 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1752
1753 LOCK (reslock);
1754 main_tid = pthread_self ();
1755 main_sig = signum;
1756 UNLOCK (reslock);
1757
1758 if (main_sig && npending)
1759 pthread_kill (main_tid, main_sig);
1760}
1761
1762void
1763aio_block (SV *cb)
1764 PROTOTYPE: &
1765 PPCODE:
1766{
1767 int count;
1768
1769 block_sig ();
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1773 SPAGAIN;
1774 unblock_sig ();
1775
1776 if (SvTRUE (ERRSV))
1777 croak (0);
1778
1779 XSRETURN (count);
1780}
1781
1782int 2095int
1783nreqs() 2096nreqs ()
1784 PROTOTYPE:
1785 CODE: 2097 CODE:
1786 RETVAL = nreqs; 2098 RETVAL = eio_nreqs ();
1787 OUTPUT: 2099 OUTPUT:
1788 RETVAL 2100 RETVAL
1789 2101
1790int 2102int
1791nready() 2103nready ()
1792 PROTOTYPE:
1793 CODE: 2104 CODE:
1794 RETVAL = get_nready (); 2105 RETVAL = eio_nready ();
1795 OUTPUT: 2106 OUTPUT:
1796 RETVAL 2107 RETVAL
1797 2108
1798int 2109int
1799npending() 2110npending ()
1800 PROTOTYPE:
1801 CODE: 2111 CODE:
1802 RETVAL = get_npending (); 2112 RETVAL = eio_npending ();
1803 OUTPUT: 2113 OUTPUT:
1804 RETVAL 2114 RETVAL
1805 2115
1806int 2116int
1807nthreads() 2117nthreads ()
1808 PROTOTYPE:
1809 CODE: 2118 CODE:
1810 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2119 RETVAL = eio_nthreads ();
1811 RETVAL = started;
1812 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813 OUTPUT: 2120 OUTPUT:
1814 RETVAL 2121 RETVAL
1815 2122
2123int
2124fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2125 CODE:
2126 RETVAL = posix_fadvise (fh, offset, length, advice);
2127 OUTPUT:
2128 RETVAL
2129
2130IV
2131sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2132 CODE:
2133 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2134 OUTPUT:
2135 RETVAL
2136
2137void
2138mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2139 PPCODE:
2140 sv_clear_foreign (scalar);
2141{
2142 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2143 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2144 if (addr == (void *)-1)
2145 XSRETURN_NO;
2146
2147 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2148
2149 if (!(prot & PROT_WRITE))
2150 SvREADONLY_on (scalar);
2151
2152 XSRETURN_YES;
2153}
2154
2155void
2156munmap (SV *scalar)
2157 CODE:
2158 sv_clear_foreign (scalar);
2159
2160SV *
2161mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2162 CODE:
2163{
2164 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2165 void *new;
2166
2167 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2168 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2169
2170 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2171
2172 RETVAL = &PL_sv_no;
2173
2174 if (new != (void *)-1)
2175 {
2176 RETVAL = new == (void *)mg->mg_ptr
2177 ? newSVpvn ("0 but true", 10)
2178 : &PL_sv_yes;
2179
2180 mg->mg_ptr = (char *)new;
2181 mg->mg_obj = (SV *)new_length;
2182
2183 SvPVX (scalar) = mg->mg_ptr;
2184 SvCUR_set (scalar, new_length);
2185 }
2186}
2187 OUTPUT:
2188 RETVAL
2189
2190int
2191madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2192 ALIAS:
2193 mprotect = 1
2194 CODE:
2195{
2196 STRLEN svlen;
2197 void *addr = SvPVbyte (scalar, svlen);
2198 STRLEN len = SvUV (length);
2199
2200 if (offset < 0)
2201 offset += svlen;
2202
2203 if (offset < 0 || offset > svlen)
2204 croak ("offset outside of scalar");
2205
2206 if (!SvOK (length) || len + offset > svlen)
2207 len = svlen - offset;
2208
2209 addr = (void *)(((intptr_t)addr) + offset);
2210 eio_page_align (&addr, &len);
2211
2212 switch (ix)
2213 {
2214 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2215 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2216 }
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2223 CODE:
2224{
2225 STRLEN svlen;
2226 void *addr = SvPVbyte (scalar, svlen);
2227 size_t len = SvUV (length);
2228
2229 if (offset < 0)
2230 offset += svlen;
2231
2232 if (offset < 0 || offset > svlen)
2233 croak ("offset outside of scalar");
2234
2235 if (!SvOK (length) || len + offset > svlen)
2236 len = svlen - offset;
2237
2238 addr = (void *)(((intptr_t)addr) + offset);
2239 eio_page_align (&addr, &len);
2240#if _POSIX_MEMLOCK_RANGE
2241 RETVAL = munlock (addr, len);
2242#else
2243 RETVAL = EIO_ENOSYS ();
2244#endif
2245}
2246 OUTPUT:
2247 RETVAL
2248
2249int
2250mlockall (int flags)
2251 CODE:
2252 RETVAL = eio_mlockall_sync (flags);
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257munlockall ()
2258 CODE:
2259#if _POSIX_MEMLOCK
2260 munlockall ();
2261#else
2262 RETVAL = EIO_ENOSYS ();
2263#endif
2264 OUTPUT:
2265 RETVAL
2266
2267int
2268splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2269 CODE:
2270{
2271#if HAVE_LINUX_SPLICE
2272 loff_t off_in_, off_out_;
2273 RETVAL = splice (
2274 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2275 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2276 length, flags
2277 );
2278#else
2279 RETVAL = EIO_ENOSYS ();
2280#endif
2281}
2282 OUTPUT:
2283 RETVAL
2284
2285int
2286tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2287 CODE:
2288#if HAVE_LINUX_SPLICE
2289 RETVAL = tee (rfh, wfh, length, flags);
2290#else
2291 RETVAL = EIO_ENOSYS ();
2292#endif
2293 OUTPUT:
2294 RETVAL
2295
2296int
2297pipesize (aio_rfd rfh, int new_size = -1)
2298 PROTOTYPE: $;$
2299 CODE:
2300#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2301 if (new_size >= 0)
2302 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2303 else
2304 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2305#else
2306 errno = ENOSYS;
2307 RETVAL = -1;
2308#endif
2309 OUTPUT:
2310 RETVAL
2311
2312void
2313pipe2 (int flags = 0)
2314 PROTOTYPE: ;$
2315 PPCODE:
2316{
2317 int fd[2];
2318 int res;
2319
2320 if (flags)
2321#if HAVE_PIPE2
2322 res = pipe2 (fd, flags);
2323#else
2324 res = (errno = ENOSYS, -1);
2325#endif
2326 else
2327 res = pipe (fd);
2328
2329 if (!res)
2330 {
2331 EXTEND (SP, 2);
2332 PUSHs (newmortalFH (fd[0], O_RDONLY));
2333 PUSHs (newmortalFH (fd[1], O_WRONLY));
2334 }
2335}
2336
2337void
2338eventfd (unsigned int initval = 0, int flags = 0)
2339 PPCODE:
2340{
2341 int fd;
2342#if HAVE_EVENTFD
2343 fd = eventfd (initval, flags);
2344#else
2345 fd = (errno = ENOSYS, -1);
2346#endif
2347
2348 XPUSHs (newmortalFH (fd, O_RDWR));
2349}
2350
2351void
2352timerfd_create (int clockid, int flags = 0)
2353 PPCODE:
2354{
2355 int fd;
2356#if HAVE_TIMERFD
2357 fd = timerfd_create (clockid, flags);
2358#else
2359 fd = (errno = ENOSYS, -1);
2360#endif
2361
2362 XPUSHs (newmortalFH (fd, O_RDWR));
2363}
2364
2365void
2366timerfd_settime (SV *fh, int flags, NV interval, NV value)
2367 PPCODE:
2368{
2369 int fd = s_fileno_croak (fh, 0);
2370#if HAVE_TIMERFD
2371 int res;
2372 struct itimerspec its, ots;
2373
2374 ts_set (&its.it_interval, interval);
2375 ts_set (&its.it_value , value);
2376 res = timerfd_settime (fd, flags, &its, &ots);
2377
2378 if (!res)
2379 {
2380 EXTEND (SP, 2);
2381 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2382 PUSHs (newSVnv (ts_get (&ots.it_value)));
2383 }
2384#else
2385 errno = ENOSYS;
2386#endif
2387}
2388
2389void
2390timerfd_gettime (SV *fh)
2391 PPCODE:
2392{
2393 int fd = s_fileno_croak (fh, 0);
2394#if HAVE_TIMERFD
2395 int res;
2396 struct itimerspec ots;
2397 res = timerfd_gettime (fd, &ots);
2398
2399 if (!res)
2400 {
2401 EXTEND (SP, 2);
2402 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2403 PUSHs (newSVnv (ts_get (&ots.it_value)));
2404 }
2405#else
2406 errno = ENOSYS;
2407#endif
2408}
2409
2410UV
2411get_fdlimit ()
2412 CODE:
2413#if HAVE_RLIMITS
2414 struct rlimit rl;
2415 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2416 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2417#endif
2418 XSRETURN_UNDEF;
2419 OUTPUT:
2420 RETVAL
2421
2422void
2423min_fdlimit (UV limit = 0x7fffffffU)
2424 CODE:
2425{
2426#if HAVE_RLIMITS
2427 struct rlimit rl;
2428 rlim_t orig_rlim_max;
2429 UV bit;
2430
2431 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2432 goto fail;
2433
2434 if (rl.rlim_cur == RLIM_INFINITY)
2435 XSRETURN_YES;
2436
2437 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2438
2439 if (rl.rlim_cur < limit)
2440 {
2441 rl.rlim_cur = limit;
2442
2443 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2444 rl.rlim_max = rl.rlim_cur;
2445 }
2446
2447 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2448 XSRETURN_YES;
2449
2450 if (errno == EPERM)
2451 {
2452 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2453 /* our limit overflows a system-wide limit */
2454 /* try an adaptive algorithm, but do not lower the hardlimit */
2455 rl.rlim_max = 0;
2456 for (bit = 0x40000000U; bit; bit >>= 1)
2457 {
2458 rl.rlim_max |= bit;
2459 rl.rlim_cur = rl.rlim_max;
2460
2461 /* nevr decrease the hard limit */
2462 if (rl.rlim_max < orig_rlim_max)
2463 break;
2464
2465 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2466 rl.rlim_max &= ~bit; /* too high, remove bit again */
2467 }
2468
2469 /* now, raise the soft limit to the max permitted */
2470 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2471 {
2472 rl.rlim_cur = rl.rlim_max;
2473 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2474 errno = EPERM;
2475 }
2476 }
2477#endif
2478 fail:
2479 XSRETURN_UNDEF;
2480}
2481
2482void _on_next_submit (SV *cb)
2483 CODE:
2484 SvREFCNT_dec (on_next_submit);
2485 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2486
1816PROTOTYPES: DISABLE 2487PROTOTYPES: DISABLE
2488
2489MODULE = IO::AIO PACKAGE = IO::AIO::WD
2490
2491BOOT:
2492{
2493 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2494 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2495}
2496
2497void
2498DESTROY (SV *self)
2499 CODE:
2500{
2501 aio_wd wd = SvAIO_WD (self);
2502#if HAVE_AT
2503 {
2504 SV *callback = &PL_sv_undef;
2505 dREQ; /* clobbers next_pri :/ */
2506 next_pri = req->pri; /* restore next_pri */
2507 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2508 req->type = EIO_WD_CLOSE;
2509 req->wd = wd;
2510 REQ_SEND;
2511 }
2512#else
2513 eio_wd_close_sync (wd);
2514#endif
2515}
1817 2516
1818MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2517MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819 2518
1820void 2519void
1821cancel (aio_req_ornot req) 2520cancel (aio_req_ornot req)
1822 CODE: 2521 CODE:
1823 req_cancel (req); 2522 eio_cancel (req);
1824 2523
1825void 2524void
1826cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2525cb (aio_req_ornot req, SV *callback = NO_INIT)
1827 CODE: 2526 PPCODE:
2527{
2528 if (GIMME_V != G_VOID)
2529 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2530
2531 if (items > 1)
2532 {
2533 SV *cb_cv = get_cb (callback);
2534
1828 SvREFCNT_dec (req->callback); 2535 SvREFCNT_dec (req->callback);
1829 req->callback = newSVsv (callback); 2536 req->callback = SvREFCNT_inc (cb_cv);
2537 }
2538}
1830 2539
1831MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2540MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832 2541
1833void 2542void
1834add (aio_req grp, ...) 2543add (aio_req grp, ...)
1835 PPCODE: 2544 PPCODE:
1836{ 2545{
1837 int i; 2546 int i;
1838 aio_req req;
1839
1840 if (main_sig && !block_sig_level)
1841 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1842 2547
1843 if (grp->int1 == 2) 2548 if (grp->int1 == 2)
1844 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2549 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845 2550
1846 for (i = 1; i < items; ++i ) 2551 for (i = 1; i < items; ++i )
1847 { 2552 {
2553 aio_req req;
2554
1848 if (GIMME_V != G_VOID) 2555 if (GIMME_V != G_VOID)
1849 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2556 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850 2557
1851 req = SvAIO_REQ (ST (i)); 2558 req = SvAIO_REQ (ST (i));
1852 2559
1853 if (req) 2560 if (req)
1854 { 2561 eio_grp_add (grp, req);
1855 ++grp->size;
1856 req->grp = grp;
1857
1858 req->grp_prev = 0;
1859 req->grp_next = grp->grp_first;
1860
1861 if (grp->grp_first)
1862 grp->grp_first->grp_prev = req;
1863
1864 grp->grp_first = req;
1865 }
1866 } 2562 }
1867} 2563}
1868 2564
1869void 2565void
1870cancel_subs (aio_req_ornot req) 2566cancel_subs (aio_req_ornot req)
… …
1879 AV *av; 2575 AV *av;
1880 2576
1881 grp->errorno = errno; 2577 grp->errorno = errno;
1882 2578
1883 av = newAV (); 2579 av = newAV ();
2580 av_extend (av, items - 1);
1884 2581
1885 for (i = 1; i < items; ++i ) 2582 for (i = 1; i < items; ++i )
1886 av_push (av, newSVsv (ST (i))); 2583 av_push (av, newSVsv (ST (i)));
1887 2584
1888 SvREFCNT_dec (grp->sv1); 2585 SvREFCNT_dec (grp->sv1);
… …
1895 grp->errorno = errorno; 2592 grp->errorno = errorno;
1896 2593
1897void 2594void
1898limit (aio_req grp, int limit) 2595limit (aio_req grp, int limit)
1899 CODE: 2596 CODE:
1900 grp->int2 = limit; 2597 eio_grp_limit (grp, limit);
1901 aio_grp_feed (grp);
1902 2598
1903void 2599void
1904feed (aio_req grp, SV *callback=&PL_sv_undef) 2600feed (aio_req grp, SV *callback = &PL_sv_undef)
1905 CODE: 2601 CODE:
1906{ 2602{
1907 SvREFCNT_dec (grp->sv2); 2603 SvREFCNT_dec (grp->sv2);
1908 grp->sv2 = newSVsv (callback); 2604 grp->sv2 = newSVsv (callback);
2605 grp->feed = aio_grp_feed;
1909 2606
1910 if (grp->int2 <= 0) 2607 if (grp->int2 <= 0)
1911 grp->int2 = 2; 2608 grp->int2 = 2;
1912 2609
1913 aio_grp_feed (grp); 2610 eio_grp_limit (grp, grp->int2);
1914} 2611}
1915 2612

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