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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC vs.
Revision 1.247 by root, Fri Jun 23 22:09:50 2017 UTC

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

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