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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.248 by root, Fri Jun 23 22:33:06 2017 UTC

1#include "xthread.h" 1#include "libeio/xthread.h"
2 2
3#include <errno.h> 3#include <errno.h>
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8 8
9#include "autoconf/config.h" 9#include "schmorp.h"
10 10
11#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h> 12#include <stdlib.h>
13#include <errno.h> 13#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 14#include <sys/types.h>
17#include <sys/stat.h> 15#include <sys/stat.h>
18#include <limits.h> 16#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 17#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 18#include <sched.h>
23 19
24#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25# if __linux
26# include <sys/sendfile.h>
27# elif __freebsd
28# include <sys/socket.h>
29# include <sys/uio.h> 21# include <sys/mman.h>
30# 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
31# include <sys/socket.h> 86 #include <sys/time.h>
32# elif __solaris /* not yet */
33# 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
34# else 145# else
35# error sendfile support requested but not available 146# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 147# endif
37#endif 148#endif
38 149
39/* number of seconds after which idle threads exit */ 150/* defines all sorts of constants to 0 unless they are already defined */
40#define IDLE_TIMEOUT 10 151/* also provides const_iv_ and const_niv_ macros for them */
152#include "def0.h"
41 153
42/* used for struct dirent, AIX doesn't provide it */ 154#ifndef makedev
43#ifndef NAME_MAX 155# define makedev(maj,min) (((maj) << 8) | (min))
44# define NAME_MAX 4096
45#endif 156#endif
157#ifndef major
158# define major(dev) ((dev) >> 8)
159#endif
160#ifndef minor
161# define minor(dev) ((dev) & 0xff)
162#endif
46 163
47/* buffer size for various temporary buffers */ 164#if PAGESIZE <= 0
48#define AIO_BUFSIZE 65536 165# define PAGESIZE sysconf (_SC_PAGESIZE)
166#endif
49 167
50#define dBUF \ 168/*****************************************************************************/
51 char *aio_buf; \
52 LOCK (wrklock); \
53 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
54 UNLOCK (wrklock); \
55 if (!aio_buf) \
56 return -1;
57 169
58typedef SV SV8; /* byte-sv, used for argument-checking */ 170static void
59 171fiemap (eio_req *req)
60enum {
61 REQ_QUIT,
62 REQ_OPEN, REQ_CLOSE,
63 REQ_READ, REQ_WRITE, REQ_READAHEAD,
64 REQ_SENDFILE,
65 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66 REQ_FSYNC, REQ_FDATASYNC,
67 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68 REQ_MKNOD, REQ_READDIR,
69 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70 REQ_GROUP, REQ_NOP,
71 REQ_BUSY,
72};
73
74#define AIO_REQ_KLASS "IO::AIO::REQ"
75#define AIO_GRP_KLASS "IO::AIO::GRP"
76
77typedef struct aio_cb
78{ 172{
79 struct aio_cb *volatile next; 173 req->result = -1;
80 174
81 SV *callback, *fh; 175#if HAVE_FIEMAP
82 SV *sv1, *sv2; 176 /* assume some c99 */
83 void *ptr1, *ptr2; 177 struct fiemap *fiemap = 0;
84 off_t offs; 178 size_t end_offset;
85 size_t size; 179 int count = req->int3;
86 ssize_t result;
87 180
88 STRLEN stroffset; 181 req->flags |= EIO_FLAG_PTR1_FREE;
89 int type;
90 int int1, int2;
91 int errorno;
92 mode_t mode; /* open */
93 182
94 unsigned char flags; 183 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
95 unsigned char pri; 184 /* increase in 3.5kb steps */
185 if (count < 0)
186 count = 8;
96 187
97 SV *self; /* the perl counterpart of this request, if any */ 188 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
98 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 189 errno = ENOMEM;
99} aio_cb; 190 if (!fiemap)
100
101enum {
102 FLAG_CANCELLED = 0x01, /* request was cancelled */
103 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105};
106
107typedef aio_cb *aio_req;
108typedef aio_cb *aio_req_ornot;
109
110enum {
111 PRI_MIN = -4,
112 PRI_MAX = 4,
113
114 DEFAULT_PRI = 0,
115 PRI_BIAS = -PRI_MIN,
116 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117};
118
119#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121static unsigned int max_poll_time = 0;
122static unsigned int max_poll_reqs = 0;
123
124/* calculcate time difference in ~1/AIO_TICKS of a second */
125static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126{
127 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
129}
130
131static thread_t main_tid;
132static int main_sig;
133static int block_sig_level;
134
135void block_sig ()
136{
137 sigset_t ss;
138
139 if (block_sig_level++)
140 return; 191 return;
141 192
142 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)
143 return; 201 return;
144 202
145 sigemptyset (&ss); 203 if (req->int3 >= 0 /* not autosizing */
146 sigaddset (&ss, main_sig); 204 || !fiemap->fm_mapped_extents /* no more extents */
147 pthread_sigmask (SIG_BLOCK, &ss, 0); 205 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
148} 206 goto done;
149 207
150void unblock_sig () 208 /* else we have to loop -
151{ 209 * it would be tempting (actually I tried that first) to just query the
152 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 */
153 214
154 if (--block_sig_level) 215 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
155 return;
156 216
157 if (!main_sig) 217 for (;;)
158 return;
159
160 sigemptyset (&ss);
161 sigaddset (&ss, main_sig);
162 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163}
164
165static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167static unsigned int started, idle, wanted;
168
169/* worker threads management */
170static mutex_t wrklock = MUTEX_INIT;
171
172typedef struct worker {
173 /* locked by wrklock */
174 struct worker *prev, *next;
175
176 thread_t tid;
177
178 /* locked by reslock, reqlock or wrklock */
179 aio_req req; /* currently processed request */
180 void *dbuf;
181 DIR *dirp;
182} worker;
183
184static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186static void worker_clear (worker *wrk)
187{
188 if (wrk->dirp)
189 { 218 {
190 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) */
191 wrk->dirp = 0; 220 char scratch[3072];
192 } 221 struct fiemap *incmap = (struct fiemap *)scratch;
193 222
194 if (wrk->dbuf) 223 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
195 { 224 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
196 free (wrk->dbuf); 225 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
197 wrk->dbuf = 0; 226 incmap->fm_flags = fiemap->fm_flags;
198 } 227 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
199}
200 228
201static void worker_free (worker *wrk) 229 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
202{
203 wrk->next->prev = wrk->prev;
204 wrk->prev->next = wrk->next;
205
206 free (wrk);
207}
208
209static volatile unsigned int nreqs, nready, npending;
210static volatile unsigned int max_idle = 4;
211static volatile unsigned int max_outstanding = 0xffffffff;
212static int respipe [2];
213
214static mutex_t reslock = MUTEX_INIT;
215static mutex_t reqlock = MUTEX_INIT;
216static cond_t reqwait = COND_INIT;
217
218#if WORDACCESS_UNSAFE
219
220static unsigned int get_nready ()
221{
222 unsigned int retval;
223
224 LOCK (reqlock);
225 retval = nready;
226 UNLOCK (reqlock);
227
228 return retval;
229}
230
231static unsigned int get_npending ()
232{
233 unsigned int retval;
234
235 LOCK (reslock);
236 retval = npending;
237 UNLOCK (reslock);
238
239 return retval;
240}
241
242static unsigned int get_nthreads ()
243{
244 unsigned int retval;
245
246 LOCK (wrklock);
247 retval = started;
248 UNLOCK (wrklock);
249
250 return retval;
251}
252
253#else
254
255# define get_nready() nready
256# define get_npending() npending
257# define get_nthreads() started
258
259#endif
260
261/*
262 * a somewhat faster data structure might be nice, but
263 * with 8 priorities this actually needs <20 insns
264 * per shift, the most expensive operation.
265 */
266typedef struct {
267 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268 int size;
269} reqq;
270
271static reqq req_queue;
272static reqq res_queue;
273
274int reqq_push (reqq *q, aio_req req)
275{
276 int pri = req->pri;
277 req->next = 0;
278
279 if (q->qe[pri])
280 {
281 q->qe[pri]->next = req;
282 q->qe[pri] = req;
283 }
284 else
285 q->qe[pri] = q->qs[pri] = req;
286
287 return q->size++;
288}
289
290aio_req reqq_shift (reqq *q)
291{
292 int pri;
293
294 if (!q->size)
295 return 0; 230 return;
296 231
297 --q->size; 232 if (!incmap->fm_mapped_extents)
233 goto done;
298 234
299 for (pri = NUM_PRI; pri--; ) 235 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
300 { 236 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
301 aio_req req = q->qs[pri]; 237 errno = ENOMEM;
302
303 if (req) 238 if (!fiemap)
239 return;
240
241 req->ptr1 = fiemap;
242
243 for (count = 0; count < incmap->fm_mapped_extents; ++count)
304 { 244 {
305 if (!(q->qs[pri] = req->next)) 245 struct fiemap_extent *e = incmap->fm_extents + count;
306 q->qe[pri] = 0;
307 246
308 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
309 } 255 }
310 } 256 }
311 257
312 abort (); 258done:
313} 259 req->result = 0;
314 260
315static int poll_cb (); 261#else
316static 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
317static void req_free (aio_req req); 282static void req_destroy (aio_req req);
318static void req_cancel (aio_req req); 283static void req_cancel (aio_req req);
319 284
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
320/* must be called at most once */ 299/* must be called at most once */
321static SV *req_sv (aio_req req, const char *klass) 300static SV *
301req_sv (aio_req req, HV *stash)
322{ 302{
323 if (!req->self) 303 if (!req->self)
324 { 304 {
325 req->self = (SV *)newHV (); 305 req->self = (SV *)newHV ();
326 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 306 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327 } 307 }
328 308
329 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 309 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330} 310}
331 311
332static 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)
333{ 320{
334 MAGIC *mg; 321 MAGIC *mg;
335 322
336 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")))
337 croak ("object of class " AIO_REQ_KLASS " expected"); 328 croak ("object of class IO::AIO::REQ expected");
338 329
339 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 330 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340 331
341 return mg ? (aio_req)mg->mg_ptr : 0; 332 return mg ? (aio_req)mg->mg_ptr : 0;
342} 333}
343 334
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
344static void aio_grp_feed (aio_req grp) 372aio_grp_feed (aio_req grp)
345{ 373{
346 block_sig (); 374 if (grp->sv2 && SvOK (grp->sv2))
347
348 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349 { 375 {
350 int old_len = grp->size;
351
352 if (grp->sv2 && SvOK (grp->sv2))
353 {
354 dSP; 376 dSP;
355 377
356 ENTER; 378 ENTER;
357 SAVETMPS; 379 SAVETMPS;
358 PUSHMARK (SP); 380 PUSHMARK (SP);
359 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 381 XPUSHs (req_sv (grp, aio_grp_stash));
360 PUTBACK; 382 PUTBACK;
361 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 383 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362 SPAGAIN; 384 SPAGAIN;
363 FREETMPS; 385 FREETMPS;
364 LEAVE; 386 LEAVE;
365 }
366
367 /* stop if no progress has been made */
368 if (old_len == grp->size)
369 {
370 SvREFCNT_dec (grp->sv2);
371 grp->sv2 = 0;
372 break;
373 }
374 } 387 }
375
376 unblock_sig ();
377} 388}
378 389
379static void aio_grp_dec (aio_req grp) 390static void
391req_submit (eio_req *req)
380{ 392{
381 --grp->size; 393 eio_submit (req);
382 394
383 /* call feeder, if applicable */ 395 if (expect_false (on_next_submit))
384 aio_grp_feed (grp);
385
386 /* finish, if done */
387 if (!grp->size && grp->int1)
388 { 396 {
389 block_sig (); 397 dSP;
398 SV *cb = sv_2mortal (on_next_submit);
390 399
391 if (!req_invoke (grp)) 400 on_next_submit = 0;
392 {
393 req_free (grp);
394 unblock_sig ();
395 croak (0);
396 }
397 401
398 req_free (grp); 402 PUSHMARK (SP);
399 unblock_sig (); 403 PUTBACK;
404 call_sv (cb, G_DISCARD | G_EVAL);
400 } 405 }
401} 406}
402 407
408static int
403static int req_invoke (aio_req req) 409req_invoke (eio_req *req)
404{ 410{
405 dSP;
406
407 if (req->flags & FLAG_SV1_RO_OFF) 411 if (req->flags & FLAG_SV2_RO_OFF)
408 SvREADONLY_off (req->sv1); 412 SvREADONLY_off (req->sv2);
409 413
410 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 414 if (!EIO_CANCELLED (req) && req->callback)
411 { 415 {
416 dSP;
417 static SV *sv_result_cache; /* caches the result integer SV */
418 SV *sv_result;
419
412 ENTER; 420 ENTER;
413 SAVETMPS; 421 SAVETMPS;
414 PUSHMARK (SP); 422 PUSHMARK (SP);
415 EXTEND (SP, 1); 423 EXTEND (SP, 1);
416 424
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
417 switch (req->type) 438 switch (req->type)
418 { 439 {
440 case EIO_WD_OPEN:
441 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
442 break;
443
419 case REQ_READDIR: 444 case EIO_READDIR:
420 { 445 {
421 SV *rv = &PL_sv_undef; 446 SV *rv = &PL_sv_undef;
422 447
423 if (req->result >= 0) 448 if (req->result >= 0)
424 { 449 {
425 int i; 450 int i;
426 char *buf = req->ptr2; 451 char *names = (char *)req->ptr2;
452 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427 AV *av = newAV (); 453 AV *av = newAV ();
428 454
429 av_extend (av, req->result - 1); 455 av_extend (av, req->result - 1);
430 456
431 for (i = 0; i < req->result; ++i) 457 for (i = 0; i < req->result; ++i)
432 { 458 {
433 SV *sv = newSVpv (buf, 0); 459 if (req->int1 & EIO_READDIR_DENTS)
460 {
461 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434 462
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
435 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);
436 buf += SvCUR (sv) + 1; 491 names += SvCUR (name) + 1;
492 }
437 } 493 }
438 494
439 rv = sv_2mortal (newRV_noinc ((SV *)av)); 495 rv = sv_2mortal (newRV_noinc ((SV *)av));
440 } 496 }
441 497
442 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))));
443 } 502 }
444 break; 503 break;
445 504
446 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:
447 { 511 {
448 /* convert fd to fh */ 512 SV *rv = &PL_sv_undef;
449 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));
450 524
451 PUSHs (sv_2mortal (newSViv (req->result))); 525 rv = sv_2mortal (newRV_noinc ((SV *)hv));
452 PUTBACK;
453 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
454 SPAGAIN;
455 526
456 fh = POPs; 527 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
457 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
458 XPUSHs (fh); 541 PUSHs (rv);
459 } 542 }
543
460 break; 544 break;
461 545
462 case REQ_GROUP: 546 case EIO_GROUP:
463 req->int1 = 2; /* mark group as finished */ 547 req->int1 = 2; /* mark group as finished */
464 548
465 if (req->sv1) 549 if (req->sv1)
466 { 550 {
467 int i; 551 int i;
… …
471 for (i = 0; i <= AvFILL (av); ++i) 555 for (i = 0; i <= AvFILL (av); ++i)
472 PUSHs (*av_fetch (av, i, 0)); 556 PUSHs (*av_fetch (av, i, 0));
473 } 557 }
474 break; 558 break;
475 559
476 case REQ_NOP: 560 case EIO_NOP:
477 case REQ_BUSY: 561 case EIO_BUSY:
478 break; 562 break;
479 563
480 case REQ_READLINK: 564 case EIO_READLINK:
565 case EIO_REALPATH:
481 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)
482 { 598 {
483 SvCUR_set (req->sv1, req->result); 599#if HAVE_FIEMAP
484 *SvEND (req->sv1) = 0;
485 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
486 } 631 }
632 else
633 PUSHs (sv_result);
487 break; 634 break;
488 635
489 case REQ_STAT: 636 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
490 case REQ_LSTAT: 637 if (req->result > 0)
491 case REQ_FSTAT: 638 SvIV_set (sv_result, 0);
492 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 639 /* FALLTHROUGH */
493 PL_laststatval = req->result;
494 PL_statcache = *(Stat_t *)(req->ptr2);
495 PUSHs (sv_2mortal (newSViv (req->result)));
496 break;
497
498 case REQ_READ:
499 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
500 *SvEND (req->sv1) = 0;
501 PUSHs (sv_2mortal (newSViv (req->result)));
502 break;
503 640
504 default: 641 default:
505 PUSHs (sv_2mortal (newSViv (req->result))); 642 PUSHs (sv_result);
506 break; 643 break;
507 } 644 }
508 645
509 errno = req->errorno; 646 errno = req->errorno;
510 647
511 PUTBACK; 648 PUTBACK;
512 call_sv (req->callback, G_VOID | G_EVAL); 649 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513 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;
514 656
515 FREETMPS; 657 FREETMPS;
516 LEAVE; 658 LEAVE;
659
660 PUTBACK;
517 } 661 }
518 662
519 if (req->grp)
520 {
521 aio_req grp = req->grp;
522
523 /* unlink request */
524 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527 if (grp->grp_first == req)
528 grp->grp_first = req->grp_next;
529
530 aio_grp_dec (grp);
531 }
532
533 return !SvTRUE (ERRSV); 663 return !!SvTRUE (ERRSV);
534} 664}
535 665
536static void req_free (aio_req req) 666static void
667req_destroy (aio_req req)
537{ 668{
538 if (req->self) 669 if (req->self)
539 { 670 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 671 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 672 SvREFCNT_dec (req->self);
542 } 673 }
543 674
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 675 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 676 SvREFCNT_dec (req->sv2);
677 SvREFCNT_dec (req->sv3);
678 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 679 SvREFCNT_dec (req->callback);
548 680
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 681 free (req);
553} 682}
554 683
684static void
555static void req_cancel_subs (aio_req grp) 685req_cancel_subs (aio_req grp)
556{ 686{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 687 if (grp->type != EIO_GROUP)
560 return; 688 return;
561 689
562 SvREFCNT_dec (grp->sv2); 690 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 691 grp->sv2 = 0;
564 692
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 693 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 694}
568 695
569static void req_cancel (aio_req req) 696static void ecb_cold
697create_respipe (void)
570{ 698{
571 req->flags |= FLAG_CANCELLED; 699 if (s_epipe_renew (&respipe))
572 700 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 701}
575 702
576static void *aio_proc(void *arg); 703static void
577 704poll_wait (void)
578static void start_thread (void)
579{ 705{
580 worker *wrk = calloc (1, sizeof (worker));
581
582 if (!wrk)
583 croak ("unable to allocate worker thread data");
584
585 LOCK (wrklock);
586
587 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588 {
589 wrk->prev = &wrk_first;
590 wrk->next = wrk_first.next;
591 wrk_first.next->prev = wrk;
592 wrk_first.next = wrk;
593 ++started;
594 }
595 else
596 free (wrk);
597
598 UNLOCK (wrklock);
599}
600
601static void maybe_start_thread ()
602{
603 if (get_nthreads () >= wanted)
604 return;
605
606 /* todo: maybe use idle here, but might be less exact */
607 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608 return;
609
610 start_thread ();
611}
612
613static void req_send (aio_req req)
614{
615 block_sig ();
616
617 ++nreqs;
618
619 LOCK (reqlock);
620 ++nready;
621 reqq_push (&req_queue, req);
622 COND_SIGNAL (reqwait);
623 UNLOCK (reqlock);
624
625 unblock_sig ();
626
627 maybe_start_thread ();
628}
629
630static void end_thread (void)
631{
632 aio_req req;
633
634 Newz (0, req, 1, aio_cb);
635
636 req->type = REQ_QUIT;
637 req->pri = PRI_MAX + PRI_BIAS;
638
639 LOCK (reqlock);
640 reqq_push (&req_queue, req);
641 COND_SIGNAL (reqwait);
642 UNLOCK (reqlock);
643
644 LOCK (wrklock);
645 --started;
646 UNLOCK (wrklock);
647}
648
649static void set_max_idle (int nthreads)
650{
651 if (WORDACCESS_UNSAFE) LOCK (reqlock);
652 max_idle = nthreads <= 0 ? 1 : nthreads;
653 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654}
655
656static void min_parallel (int nthreads)
657{
658 if (wanted < nthreads)
659 wanted = nthreads;
660}
661
662static void max_parallel (int nthreads)
663{
664 if (wanted > nthreads)
665 wanted = nthreads;
666
667 while (started > wanted)
668 end_thread ();
669}
670
671static void poll_wait ()
672{
673 fd_set rfd;
674
675 while (nreqs) 706 while (eio_nreqs ())
676 { 707 {
677 int size; 708 int size;
678 if (WORDACCESS_UNSAFE) LOCK (reslock); 709
710 X_LOCK (EIO_POOL->reslock);
679 size = res_queue.size; 711 size = EIO_POOL->res_queue.size;
680 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 712 X_UNLOCK (EIO_POOL->reslock);
681 713
682 if (size) 714 if (size)
683 return; 715 return;
684 716
685 maybe_start_thread (); 717 etp_maybe_start_thread (EIO_POOL);
686 718
687 FD_ZERO(&rfd); 719 s_epipe_wait (&respipe);
688 FD_SET(respipe [0], &rfd);
689
690 select (respipe [0] + 1, &rfd, 0, 0, 0);
691 } 720 }
692} 721}
693 722
694static int poll_cb () 723static int
724poll_cb (void)
695{ 725{
696 dSP;
697 int count = 0;
698 int maxreqs = max_poll_reqs;
699 int do_croak = 0;
700 struct timeval tv_start, tv_now;
701 aio_req req;
702
703 if (max_poll_time)
704 gettimeofday (&tv_start, 0);
705
706 block_sig ();
707
708 for (;;) 726 for (;;)
709 { 727 {
710 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)
711 { 836 {
712 maybe_start_thread (); 837 path = AvARRAY (rv)[1];
838 wdob = AvARRAY (rv)[0];
713 839
714 LOCK (reslock); 840 if (SvOK (wdob))
715 req = reqq_shift (&res_queue);
716
717 if (req)
718 { 841 {
719 --npending; 842 *wd = SvAIO_WD (wdob);
720 843 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
721 if (!res_queue.size)
722 {
723 /* read any signals sent by the worker threads */
724 char buf [4];
725 while (read (respipe [0], buf, 4) == 4)
726 ;
727 }
728 }
729
730 UNLOCK (reslock);
731
732 if (!req)
733 break;
734
735 --nreqs;
736
737 if (req->type == REQ_GROUP && req->size)
738 {
739 req->int1 = 1; /* mark request as delayed */
740 continue;
741 } 844 }
742 else 845 else
743 { 846 *wd = EIO_INVALID_WD;
744 if (!req_invoke (req))
745 {
746 req_free (req);
747 unblock_sig ();
748 croak (0);
749 }
750
751 count++;
752 }
753
754 req_free (req);
755
756 if (maxreqs && !--maxreqs)
757 break;
758
759 if (max_poll_time)
760 {
761 gettimeofday (&tv_now, 0);
762
763 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764 break;
765 }
766 } 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 }
767 858
768 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)));
769 break; 882 break;
770 883
771 poll_wait (); 884 default:
772 885 req->type = type_path;
773 ++maxreqs; 886 req_set_path1 (req, fh_or_path);
887 break;
774 } 888 }
775
776 unblock_sig ();
777 return count;
778} 889}
779 890
780static void create_pipe () 891XS(boot_IO__AIO) ecb_cold;
781{
782 if (pipe (respipe))
783 croak ("unable to initialize result pipe");
784 892
785 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
786 croak ("cannot set result pipe to nonblocking mode");
787
788 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789 croak ("cannot set result pipe to nonblocking mode");
790}
791
792/*****************************************************************************/
793/* work around various missing functions */
794
795#if !HAVE_PREADWRITE
796# define pread aio_pread
797# define pwrite aio_pwrite
798
799/*
800 * make our pread/pwrite safe against themselves, but not against
801 * normal read/write by using a mutex. slows down execution a lot,
802 * but that's your problem, not mine.
803 */
804static mutex_t preadwritelock = MUTEX_INIT;
805
806static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807{
808 ssize_t res;
809 off_t ooffset;
810
811 LOCK (preadwritelock);
812 ooffset = lseek (fd, 0, SEEK_CUR);
813 lseek (fd, offset, SEEK_SET);
814 res = read (fd, buf, count);
815 lseek (fd, ooffset, SEEK_SET);
816 UNLOCK (preadwritelock);
817
818 return res;
819}
820
821static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822{
823 ssize_t res;
824 off_t ooffset;
825
826 LOCK (preadwritelock);
827 ooffset = lseek (fd, 0, SEEK_CUR);
828 lseek (fd, offset, SEEK_SET);
829 res = write (fd, buf, count);
830 lseek (fd, offset, SEEK_SET);
831 UNLOCK (preadwritelock);
832
833 return res;
834}
835#endif
836
837#if !HAVE_FDATASYNC
838# define fdatasync fsync
839#endif
840
841#if !HAVE_READAHEAD
842# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845{
846 dBUF;
847
848 while (count > 0)
849 {
850 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852 pread (fd, aio_buf, len, offset);
853 offset += len;
854 count -= len;
855 }
856
857 errno = 0;
858}
859
860#endif
861
862#if !HAVE_READDIR_R
863# define readdir_r aio_readdir_r
864
865static mutex_t readdirlock = MUTEX_INIT;
866
867static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868{
869 struct dirent *e;
870 int errorno;
871
872 LOCK (readdirlock);
873
874 e = readdir (dirp);
875 errorno = errno;
876
877 if (e)
878 {
879 *res = ent;
880 strcpy (ent->d_name, e->d_name);
881 }
882 else
883 *res = 0;
884
885 UNLOCK (readdirlock);
886
887 errno = errorno;
888 return e ? 0 : -1;
889}
890#endif
891
892/* sendfile always needs emulation */
893static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894{
895 ssize_t res;
896
897 if (!count)
898 return 0;
899
900#if HAVE_SENDFILE
901# if __linux
902 res = sendfile (ofd, ifd, &offset, count);
903
904# elif __freebsd
905 /*
906 * Of course, the freebsd sendfile is a dire hack with no thoughts
907 * wasted on making it similar to other I/O functions.
908 */
909 {
910 off_t sbytes;
911 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913 if (res < 0 && sbytes)
914 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915 res = sbytes;
916 }
917
918# elif __hpux
919 res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921# elif __solaris
922 {
923 struct sendfilevec vec;
924 size_t sbytes;
925
926 vec.sfv_fd = ifd;
927 vec.sfv_flag = 0;
928 vec.sfv_off = offset;
929 vec.sfv_len = count;
930
931 res = sendfilev (ofd, &vec, 1, &sbytes);
932
933 if (res < 0 && sbytes)
934 res = sbytes;
935 }
936
937# endif
938#else
939 res = -1;
940 errno = ENOSYS;
941#endif
942
943 if (res < 0
944 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
945#if __solaris
946 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
947#endif
948 )
949 )
950 {
951 /* emulate sendfile. this is a major pain in the ass */
952 dBUF;
953
954 res = 0;
955
956 while (count)
957 {
958 ssize_t cnt;
959
960 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
961
962 if (cnt <= 0)
963 {
964 if (cnt && !res) res = -1;
965 break;
966 }
967
968 cnt = write (ofd, aio_buf, cnt);
969
970 if (cnt <= 0)
971 {
972 if (cnt && !res) res = -1;
973 break;
974 }
975
976 offset += cnt;
977 res += cnt;
978 count -= cnt;
979 }
980 }
981
982 return res;
983}
984
985/* read a full directory */
986static void scandir_ (aio_req req, worker *self)
987{
988 DIR *dirp;
989 union
990 {
991 struct dirent d;
992 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993 } *u;
994 struct dirent *entp;
995 char *name, *names;
996 int memlen = 4096;
997 int memofs = 0;
998 int res = 0;
999 int errorno;
1000
1001 LOCK (wrklock);
1002 self->dirp = dirp = opendir (req->ptr1);
1003 self->dbuf = u = malloc (sizeof (*u));
1004 req->flags |= FLAG_PTR2_FREE;
1005 req->ptr2 = names = malloc (memlen);
1006 UNLOCK (wrklock);
1007
1008 if (dirp && u && names)
1009 for (;;)
1010 {
1011 errno = 0;
1012 readdir_r (dirp, &u->d, &entp);
1013
1014 if (!entp)
1015 break;
1016
1017 name = entp->d_name;
1018
1019 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020 {
1021 int len = strlen (name) + 1;
1022
1023 res++;
1024
1025 while (memofs + len > memlen)
1026 {
1027 memlen *= 2;
1028 LOCK (wrklock);
1029 req->ptr2 = names = realloc (names, memlen);
1030 UNLOCK (wrklock);
1031
1032 if (!names)
1033 break;
1034 }
1035
1036 memcpy (names + memofs, name, len);
1037 memofs += len;
1038 }
1039 }
1040
1041 if (errno)
1042 res = -1;
1043
1044 req->result = res;
1045}
1046
1047/*****************************************************************************/
1048
1049static void *aio_proc (void *thr_arg)
1050{
1051 aio_req req;
1052 struct timespec ts;
1053 worker *self = (worker *)thr_arg;
1054
1055 /* try to distribute timeouts somewhat evenly */
1056 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057 * (1000000000UL / 1024UL);
1058
1059 for (;;)
1060 {
1061 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063 LOCK (reqlock);
1064
1065 for (;;)
1066 {
1067 self->req = req = reqq_shift (&req_queue);
1068
1069 if (req)
1070 break;
1071
1072 ++idle;
1073
1074 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075 == ETIMEDOUT)
1076 {
1077 if (idle > max_idle)
1078 {
1079 --idle;
1080 UNLOCK (reqlock);
1081 LOCK (wrklock);
1082 --started;
1083 UNLOCK (wrklock);
1084 goto quit;
1085 }
1086
1087 /* we are allowed to idle, so do so without any timeout */
1088 COND_WAIT (reqwait, reqlock);
1089 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090 }
1091
1092 --idle;
1093 }
1094
1095 --nready;
1096
1097 UNLOCK (reqlock);
1098
1099 errno = 0; /* strictly unnecessary */
1100
1101 if (!(req->flags & FLAG_CANCELLED))
1102 switch (req->type)
1103 {
1104 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115 case REQ_CLOSE: req->result = close (req->int1); break;
1116 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126 case REQ_FSYNC: req->result = fsync (req->int1); break;
1127 case REQ_READDIR: scandir_ (req, self); break;
1128
1129 case REQ_BUSY:
1130 {
1131 struct timeval tv;
1132
1133 tv.tv_sec = req->int1;
1134 tv.tv_usec = req->int2;
1135
1136 req->result = select (0, 0, 0, 0, &tv);
1137 }
1138
1139 case REQ_GROUP:
1140 case REQ_NOP:
1141 break;
1142
1143 case REQ_QUIT:
1144 goto quit;
1145
1146 default:
1147 req->result = ENOSYS;
1148 break;
1149 }
1150
1151 req->errorno = errno;
1152
1153 LOCK (reslock);
1154
1155 ++npending;
1156
1157 if (!reqq_push (&res_queue, req))
1158 {
1159 /* write a dummy byte to the pipe so fh becomes ready */
1160 write (respipe [1], &respipe, 1);
1161
1162 /* optionally signal the main thread asynchronously */
1163 if (main_sig)
1164 pthread_kill (main_tid, main_sig);
1165 }
1166
1167 self->req = 0;
1168 worker_clear (self);
1169
1170 UNLOCK (reslock);
1171 }
1172
1173quit:
1174 LOCK (wrklock);
1175 worker_free (self);
1176 UNLOCK (wrklock);
1177
1178 return 0;
1179}
1180
1181/*****************************************************************************/
1182
1183static void atfork_prepare (void)
1184{
1185 LOCK (wrklock);
1186 LOCK (reqlock);
1187 LOCK (reslock);
1188#if !HAVE_PREADWRITE
1189 LOCK (preadwritelock);
1190#endif
1191#if !HAVE_READDIR_R
1192 LOCK (readdirlock);
1193#endif
1194}
1195
1196static void atfork_parent (void)
1197{
1198#if !HAVE_READDIR_R
1199 UNLOCK (readdirlock);
1200#endif
1201#if !HAVE_PREADWRITE
1202 UNLOCK (preadwritelock);
1203#endif
1204 UNLOCK (reslock);
1205 UNLOCK (reqlock);
1206 UNLOCK (wrklock);
1207}
1208
1209static void atfork_child (void)
1210{
1211 aio_req prv;
1212
1213 while (prv = reqq_shift (&req_queue))
1214 req_free (prv);
1215
1216 while (prv = reqq_shift (&res_queue))
1217 req_free (prv);
1218
1219 while (wrk_first.next != &wrk_first)
1220 {
1221 worker *wrk = wrk_first.next;
1222
1223 if (wrk->req)
1224 req_free (wrk->req);
1225
1226 worker_clear (wrk);
1227 worker_free (wrk);
1228 }
1229
1230 started = 0;
1231 idle = 0;
1232 nreqs = 0;
1233 nready = 0;
1234 npending = 0;
1235
1236 close (respipe [0]);
1237 close (respipe [1]);
1238 create_pipe ();
1239
1240 atfork_parent ();
1241}
1242
1243#define dREQ \
1244 aio_req req; \
1245 int req_pri = next_pri; \
1246 next_pri = DEFAULT_PRI + PRI_BIAS; \
1247 \
1248 if (SvOK (callback) && !SvROK (callback)) \
1249 croak ("callback must be undef or of reference type"); \
1250 \
1251 Newz (0, req, 1, aio_cb); \
1252 if (!req) \
1253 croak ("out of memory during aio_req allocation"); \
1254 \
1255 req->callback = newSVsv (callback); \
1256 req->pri = req_pri
1257
1258#define REQ_SEND \
1259 req_send (req); \
1260 \
1261 if (GIMME_V != G_VOID) \
1262 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1263
1264MODULE = IO::AIO PACKAGE = IO::AIO 893MODULE = IO::AIO PACKAGE = IO::AIO
1265 894
1266PROTOTYPES: ENABLE 895PROTOTYPES: ENABLE
1267 896
1268BOOT: 897BOOT:
1269{ 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 const_eio (FALLOC_FL_INSET_RANGE)
1106 const_eio (FALLOC_FL_UNSHARE_RANGE)
1107
1108 const_eio (RENAME_NOREPLACE)
1109 const_eio (RENAME_EXCHANGE)
1110 const_eio (RENAME_WHITEOUT)
1111
1112 const_eio (READDIR_DENTS)
1113 const_eio (READDIR_DIRS_FIRST)
1114 const_eio (READDIR_STAT_ORDER)
1115 const_eio (READDIR_FOUND_UNKNOWN)
1116
1117 const_eio (DT_UNKNOWN)
1118 const_eio (DT_FIFO)
1119 const_eio (DT_CHR)
1120 const_eio (DT_DIR)
1121 const_eio (DT_BLK)
1122 const_eio (DT_REG)
1123 const_eio (DT_LNK)
1124 const_eio (DT_SOCK)
1125 const_eio (DT_WHT)
1126 };
1127
1270 HV *stash = gv_stashpv ("IO::AIO", 1); 1128 aio_stash = gv_stashpv ("IO::AIO" , 1);
1129 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1130 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1131 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1271 1132
1272 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1133 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1273 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1134 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1274 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279 1135
1280 create_pipe (); 1136 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282}
1283 1137
1138 reinit ();
1139}
1140
1284void 1141void
1142reinit ()
1143 PROTOTYPE:
1144
1145void
1285max_poll_reqs (int nreqs) 1146max_poll_reqs (unsigned int nreqs)
1286 PROTOTYPE: $ 1147 PROTOTYPE: $
1287 CODE: 1148 CODE:
1288 max_poll_reqs = nreqs; 1149 eio_set_max_poll_reqs (nreqs);
1289 1150
1290void 1151void
1291max_poll_time (double nseconds) 1152max_poll_time (double nseconds)
1292 PROTOTYPE: $ 1153 PROTOTYPE: $
1293 CODE: 1154 CODE:
1294 max_poll_time = nseconds * AIO_TICKS; 1155 eio_set_max_poll_time (nseconds);
1295 1156
1296void 1157void
1297min_parallel (int nthreads) 1158min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299
1300void
1301max_parallel (int nthreads)
1302 PROTOTYPE: $
1303
1304void
1305max_idle (int nthreads)
1306 PROTOTYPE: $ 1159 PROTOTYPE: $
1307 CODE: 1160 CODE:
1308 set_max_idle (nthreads); 1161 eio_set_min_parallel (nthreads);
1309 1162
1310int 1163void
1311max_outstanding (int maxreqs) 1164max_parallel (unsigned int nthreads)
1312 PROTOTYPE: $ 1165 PROTOTYPE: $
1313 CODE: 1166 CODE:
1314 RETVAL = max_outstanding; 1167 eio_set_max_parallel (nthreads);
1168
1169void
1170max_idle (unsigned int nthreads)
1171 PROTOTYPE: $
1172 CODE:
1173 eio_set_max_idle (nthreads);
1174
1175void
1176idle_timeout (unsigned int seconds)
1177 PROTOTYPE: $
1178 CODE:
1179 eio_set_idle_timeout (seconds);
1180
1181void
1182max_outstanding (unsigned int maxreqs)
1183 PROTOTYPE: $
1184 CODE:
1315 max_outstanding = maxreqs; 1185 max_outstanding = maxreqs;
1316 OUTPUT:
1317 RETVAL
1318 1186
1319void 1187void
1320aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1188aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1321 SV8 * pathname
1322 int flags
1323 int mode
1324 SV * callback
1325 PROTOTYPE: $$$;$
1326 PPCODE: 1189 PPCODE:
1327{ 1190{
1328 dREQ; 1191 dREQ;
1329 1192
1193 req->type = EIO_WD_OPEN;
1194 req_set_path1 (req, pathname);
1195
1196 REQ_SEND;
1197}
1198
1199void
1200aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1201 PPCODE:
1202{
1203 dREQ;
1204
1330 req->type = REQ_OPEN; 1205 req->type = EIO_OPEN;
1331 req->sv1 = newSVsv (pathname); 1206 req_set_path1 (req, pathname);
1332 req->ptr1 = SvPVbyte_nolen (req->sv1);
1333 req->int1 = flags; 1207 req->int1 = flags;
1334 req->mode = mode; 1208 req->int2 = mode;
1335 1209
1336 REQ_SEND; 1210 REQ_SEND;
1337} 1211}
1338 1212
1339void 1213void
1340aio_close (fh,callback=&PL_sv_undef) 1214aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1341 SV * fh
1342 SV * callback
1343 PROTOTYPE: $;$
1344 ALIAS: 1215 ALIAS:
1345 aio_close = REQ_CLOSE
1346 aio_fsync = REQ_FSYNC 1216 aio_fsync = EIO_FSYNC
1347 aio_fdatasync = REQ_FDATASYNC 1217 aio_fdatasync = EIO_FDATASYNC
1218 aio_syncfs = EIO_SYNCFS
1348 PPCODE: 1219 PPCODE:
1349{ 1220{
1221 int fd = s_fileno_croak (fh, 0);
1350 dREQ; 1222 dREQ;
1351 1223
1352 req->type = ix; 1224 req->type = ix;
1353 req->fh = newSVsv (fh); 1225 req->sv1 = newSVsv (fh);
1354 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1226 req->int1 = fd;
1355 1227
1356 REQ_SEND (req); 1228 REQ_SEND;
1357} 1229}
1358 1230
1359void 1231void
1232aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1233 PPCODE:
1234{
1235 int fd = s_fileno_croak (fh, 0);
1236 dREQ;
1237
1238 req->type = EIO_SYNC_FILE_RANGE;
1239 req->sv1 = newSVsv (fh);
1240 req->int1 = fd;
1241 req->offs = offset;
1242 req->size = nbytes;
1243 req->int2 = flags;
1244
1245 REQ_SEND;
1246}
1247
1248void
1249aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1250 PPCODE:
1251{
1252 int fd = s_fileno_croak (fh, 0);
1253 dREQ;
1254
1255 req->type = EIO_FALLOCATE;
1256 req->sv1 = newSVsv (fh);
1257 req->int1 = fd;
1258 req->int2 = mode;
1259 req->offs = offset;
1260 req->size = len;
1261
1262 REQ_SEND;
1263}
1264
1265void
1266aio_close (SV *fh, SV *callback = &PL_sv_undef)
1267 PPCODE:
1268{
1269 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1270 int fd = s_fileno_croak (fh, 0);
1271 dREQ;
1272
1273 if (expect_false (close_fd < 0))
1274 {
1275 int pipefd [2];
1276
1277 if (
1278#ifdef _WIN32
1279 _pipe (pipefd, 1, _O_BINARY) < 0
1280#else
1281 pipe (pipefd) < 0
1282 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1283#endif
1284 || close (pipefd [1]) < 0
1285 )
1286 abort (); /*D*/
1287
1288 close_fd = pipefd [0];
1289 }
1290
1291 req->type = EIO_DUP2;
1292 req->int1 = close_fd;
1293 req->sv2 = newSVsv (fh);
1294 req->int2 = fd;
1295
1296 REQ_SEND;
1297}
1298
1299void
1300aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1301 PPCODE:
1302{
1303 int fd = s_fileno_croak (fh, 0);
1304 dREQ;
1305
1306 req->type = EIO_SEEK;
1307 req->sv1 = newSVsv (fh);
1308 req->int1 = fd;
1309 req->offs = SvVAL64 (offset);
1310 req->int2 = whence;
1311
1312 REQ_SEND;
1313}
1314
1315void
1360aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1316aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1361 SV * fh
1362 UV offset
1363 UV length
1364 SV8 * data
1365 UV dataoffset
1366 SV * callback
1367 ALIAS: 1317 ALIAS:
1368 aio_read = REQ_READ 1318 aio_read = EIO_READ
1369 aio_write = REQ_WRITE 1319 aio_write = EIO_WRITE
1370 PROTOTYPE: $$$$$;$
1371 PPCODE: 1320 PPCODE:
1372{ 1321{
1373 STRLEN svlen; 1322 STRLEN svlen;
1323 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374 char *svptr = SvPVbyte (data, svlen); 1324 char *svptr = SvPVbyte (data, svlen);
1375 1325 UV len = SvUV (length);
1376 SvUPGRADE (data, SVt_PV);
1377 SvPOK_on (data);
1378 1326
1379 if (dataoffset < 0) 1327 if (dataoffset < 0)
1380 dataoffset += svlen; 1328 dataoffset += svlen;
1381 1329
1382 if (dataoffset < 0 || dataoffset > svlen) 1330 if (dataoffset < 0 || dataoffset > svlen)
1383 croak ("data offset outside of string"); 1331 croak ("dataoffset outside of data scalar");
1384 1332
1385 if (ix == REQ_WRITE) 1333 if (ix == EIO_WRITE)
1386 { 1334 {
1387 /* write: check length and adjust. */ 1335 /* write: check length and adjust. */
1388 if (length < 0 || length + dataoffset > svlen) 1336 if (!SvOK (length) || len + dataoffset > svlen)
1389 length = svlen - dataoffset; 1337 len = svlen - dataoffset;
1390 } 1338 }
1391 else 1339 else
1392 { 1340 {
1393 /* read: grow scalar as necessary */ 1341 /* read: check type and grow scalar as necessary */
1342 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1394 svptr = SvGROW (data, length + dataoffset + 1); 1343 svptr = sv_grow (data, len + dataoffset + 1);
1344 else if (SvCUR (data) < len + dataoffset)
1345 croak ("length + dataoffset outside of scalar, and cannot grow");
1395 } 1346 }
1396
1397 if (length < 0)
1398 croak ("length must not be negative");
1399 1347
1400 { 1348 {
1401 dREQ; 1349 dREQ;
1402 1350
1403 req->type = ix; 1351 req->type = ix;
1404 req->fh = newSVsv (fh); 1352 req->sv1 = newSVsv (fh);
1405 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1353 req->int1 = fd;
1406 : IoOFP (sv_2io (fh))); 1354 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407 req->offs = offset;
1408 req->size = length; 1355 req->size = len;
1409 req->sv1 = SvREFCNT_inc (data); 1356 req->sv2 = SvREFCNT_inc (data);
1410 req->ptr1 = (char *)svptr + dataoffset; 1357 req->ptr2 = (char *)svptr + dataoffset;
1411 req->stroffset = dataoffset; 1358 req->stroffset = dataoffset;
1412 1359
1413 if (!SvREADONLY (data)) 1360 if (!SvREADONLY (data))
1414 { 1361 {
1415 SvREADONLY_on (data); 1362 SvREADONLY_on (data);
1416 req->flags |= FLAG_SV1_RO_OFF; 1363 req->flags |= FLAG_SV2_RO_OFF;
1417 } 1364 }
1418 1365
1419 REQ_SEND; 1366 REQ_SEND;
1420 } 1367 }
1421} 1368}
1422 1369
1423void 1370void
1424aio_readlink (path,callback=&PL_sv_undef) 1371aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1425 SV8 * path 1372 ALIAS:
1426 SV * callback 1373 aio_ioctl = EIO_IOCTL
1427 PROTOTYPE: $$;$ 1374 aio_fcntl = EIO_FCNTL
1428 PPCODE: 1375 PPCODE:
1429{ 1376{
1430 SV *data; 1377 int fd = s_fileno_croak (fh, 0);
1378 char *svptr;
1379
1380 if (SvPOK (arg) || !SvNIOK (arg))
1381 {
1382 STRLEN svlen;
1383 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1384#ifdef IOCPARM_LEN
1385 STRLEN need = IOCPARM_LEN (request);
1386#else
1387 STRLEN need = 256;
1388#endif
1389
1390 if (svlen < need)
1391 svptr = SvGROW (arg, need);
1392 }
1393 else
1394 svptr = (char *)SvIV (arg);
1395
1396 {
1397 dREQ;
1398
1399 req->type = ix;
1400 req->sv1 = newSVsv (fh);
1401 req->int1 = fd;
1402 req->int2 = (long)request;
1403 req->sv2 = SvREFCNT_inc (arg);
1404 req->ptr2 = svptr;
1405
1406 REQ_SEND;
1407 }
1408}
1409
1410void
1411aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1412 ALIAS:
1413 aio_readlink = EIO_READLINK
1414 aio_realpath = EIO_REALPATH
1415 PPCODE:
1416{
1431 dREQ; 1417 dREQ;
1432 1418
1433 data = newSV (NAME_MAX);
1434 SvPOK_on (data);
1435
1436 req->type = REQ_READLINK; 1419 req->type = ix;
1437 req->fh = newSVsv (path); 1420 req_set_path1 (req, pathname);
1438 req->ptr2 = SvPVbyte_nolen (req->fh);
1439 req->sv1 = data;
1440 req->ptr1 = SvPVbyte_nolen (data);
1441 1421
1442 REQ_SEND; 1422 REQ_SEND;
1443} 1423}
1444 1424
1445void 1425void
1446aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1426aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1447 SV * out_fh
1448 SV * in_fh
1449 UV in_offset
1450 UV length
1451 SV * callback
1452 PROTOTYPE: $$$$;$
1453 PPCODE: 1427 PPCODE:
1454{ 1428{
1429 int ifd = s_fileno_croak (in_fh , 0);
1430 int ofd = s_fileno_croak (out_fh, 1);
1455 dREQ; 1431 dREQ;
1456 1432
1457 req->type = REQ_SENDFILE; 1433 req->type = EIO_SENDFILE;
1458 req->fh = newSVsv (out_fh); 1434 req->sv1 = newSVsv (out_fh);
1459 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1435 req->int1 = ofd;
1460 req->sv2 = newSVsv (in_fh); 1436 req->sv2 = newSVsv (in_fh);
1461 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1437 req->int2 = ifd;
1462 req->offs = in_offset; 1438 req->offs = in_offset;
1463 req->size = length; 1439 req->size = length;
1464 1440
1465 REQ_SEND; 1441 REQ_SEND;
1466} 1442}
1467 1443
1468void 1444void
1469aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1445aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1470 SV * fh
1471 UV offset
1472 IV length
1473 SV * callback
1474 PROTOTYPE: $$$;$
1475 PPCODE: 1446 PPCODE:
1476{ 1447{
1448 int fd = s_fileno_croak (fh, 0);
1477 dREQ; 1449 dREQ;
1478 1450
1479 req->type = REQ_READAHEAD; 1451 req->type = EIO_READAHEAD;
1480 req->fh = newSVsv (fh); 1452 req->sv1 = newSVsv (fh);
1481 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1453 req->int1 = fd;
1482 req->offs = offset; 1454 req->offs = offset;
1483 req->size = length; 1455 req->size = length;
1484 1456
1485 REQ_SEND; 1457 REQ_SEND;
1486} 1458}
1487 1459
1488void 1460void
1489aio_stat (fh_or_path,callback=&PL_sv_undef) 1461aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1490 SV8 * fh_or_path
1491 SV * callback
1492 ALIAS: 1462 ALIAS:
1493 aio_stat = REQ_STAT 1463 aio_stat = EIO_STAT
1494 aio_lstat = REQ_LSTAT 1464 aio_lstat = EIO_LSTAT
1465 aio_statvfs = EIO_STATVFS
1495 PPCODE: 1466 PPCODE:
1496{ 1467{
1497 dREQ; 1468 dREQ;
1498 1469
1499 req->ptr2 = malloc (sizeof (Stat_t)); 1470 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1500 if (!req->ptr2)
1501 {
1502 req_free (req);
1503 croak ("out of memory during aio_stat statdata allocation");
1504 }
1505
1506 req->flags |= FLAG_PTR2_FREE;
1507
1508 if (SvPOK (fh_or_path))
1509 {
1510 req->type = ix;
1511 req->sv1 = newSVsv (fh_or_path);
1512 req->ptr1 = SvPVbyte_nolen (req->sv1);
1513 }
1514 else
1515 {
1516 req->type = REQ_FSTAT;
1517 req->fh = newSVsv (fh_or_path);
1518 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519 }
1520 1471
1521 REQ_SEND; 1472 REQ_SEND;
1522} 1473}
1523 1474
1475UV
1476major (UV dev)
1477 ALIAS:
1478 minor = 1
1479 CODE:
1480 RETVAL = ix ? minor (dev) : major (dev);
1481 OUTPUT:
1482 RETVAL
1483
1484UV
1485makedev (UV maj, UV min)
1486 CODE:
1487 RETVAL = makedev (maj, min);
1488 OUTPUT:
1489 RETVAL
1490
1524void 1491void
1492aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1493 PPCODE:
1494{
1495 dREQ;
1496
1497 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1498 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1499 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1500
1501 REQ_SEND;
1502}
1503
1504void
1505aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1506 PPCODE:
1507{
1508 dREQ;
1509
1510 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1511 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1512
1513 REQ_SEND;
1514}
1515
1516void
1517aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1518 PPCODE:
1519{
1520 dREQ;
1521
1522 req->int2 = mode;
1523 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1524
1525 REQ_SEND;
1526}
1527
1528void
1529aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1530 PPCODE:
1531{
1532 dREQ;
1533
1534 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1535 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1536 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1537
1538 REQ_SEND;
1539}
1540
1541void
1542aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req->type = EIO_READDIR;
1548 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1549
1550 if (flags & EIO_READDIR_DENTS)
1551 req->int1 |= EIO_READDIR_CUSTOM2;
1552
1553 req_set_path1 (req, pathname);
1554
1555 REQ_SEND;
1556}
1557
1558void
1559aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1560 PPCODE:
1561{
1562 dREQ;
1563
1564 req->type = EIO_MKDIR;
1565 req->int2 = mode;
1566 req_set_path1 (req, pathname);
1567
1568 REQ_SEND;
1569}
1570
1571void
1525aio_unlink (pathname,callback=&PL_sv_undef) 1572aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1526 SV8 * pathname
1527 SV * callback
1528 ALIAS: 1573 ALIAS:
1529 aio_unlink = REQ_UNLINK 1574 aio_unlink = EIO_UNLINK
1530 aio_rmdir = REQ_RMDIR 1575 aio_rmdir = EIO_RMDIR
1531 aio_readdir = REQ_READDIR 1576 aio_readdir = EIO_READDIR
1532 PPCODE: 1577 PPCODE:
1533{ 1578{
1534 dREQ; 1579 dREQ;
1535 1580
1536 req->type = ix; 1581 req->type = ix;
1537 req->sv1 = newSVsv (pathname); 1582 req_set_path1 (req, pathname);
1538 req->ptr1 = SvPVbyte_nolen (req->sv1);
1539 1583
1540 REQ_SEND; 1584 REQ_SEND;
1541} 1585}
1542 1586
1543void 1587void
1544aio_mkdir (pathname,mode,callback=&PL_sv_undef) 1588aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1545 SV8 * pathname 1589 ALIAS:
1546 UV mode 1590 aio_link = EIO_LINK
1547 SV * callback 1591 aio_symlink = EIO_SYMLINK
1592 aio_rename = EIO_RENAME
1548 PPCODE: 1593 PPCODE:
1549{ 1594{
1550 dREQ; 1595 eio_wd wd2 = 0;
1551
1552 req->type = REQ_MKDIR;
1553 req->sv1 = newSVsv (pathname);
1554 req->ptr1 = SvPVbyte_nolen (req->sv1);
1555 req->mode = mode;
1556
1557 REQ_SEND;
1558}
1559
1560void
1561aio_link (oldpath,newpath,callback=&PL_sv_undef)
1562 SV8 * oldpath
1563 SV8 * newpath
1564 SV * callback
1565 ALIAS:
1566 aio_link = REQ_LINK
1567 aio_symlink = REQ_SYMLINK
1568 aio_rename = REQ_RENAME
1569 PPCODE:
1570{
1571 dREQ; 1596 dREQ;
1572 1597
1573 req->type = ix; 1598 req->type = ix;
1574 req->fh = newSVsv (oldpath); 1599 req_set_path1 (req, oldpath);
1575 req->ptr2 = SvPVbyte_nolen (req->fh); 1600 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1576 req->sv1 = newSVsv (newpath); 1601 req->int3 = (long)wd2;
1577 req->ptr1 = SvPVbyte_nolen (req->sv1);
1578 1602
1579 REQ_SEND; 1603 REQ_SEND;
1580} 1604}
1581 1605
1582void 1606void
1583aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1607aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1584 SV8 * pathname
1585 UV mode
1586 UV dev
1587 SV * callback
1588 PPCODE: 1608 PPCODE:
1589{ 1609{
1610 eio_wd wd2 = 0;
1590 dREQ; 1611 dREQ;
1591 1612
1592 req->type = REQ_MKNOD; 1613 req->type = EIO_RENAME;
1593 req->sv1 = newSVsv (pathname); 1614 req_set_path1 (req, oldpath);
1594 req->ptr1 = SvPVbyte_nolen (req->sv1); 1615 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1595 req->mode = (mode_t)mode; 1616 req->int2 = flags;
1596 req->offs = dev; 1617 req->int3 = (long)wd2;
1597 1618
1598 REQ_SEND; 1619 REQ_SEND;
1599} 1620}
1600 1621
1601void 1622void
1602aio_busy (delay,callback=&PL_sv_undef) 1623aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1603 double delay
1604 SV * callback
1605 PPCODE: 1624 PPCODE:
1606{ 1625{
1607 dREQ; 1626 dREQ;
1608 1627
1609 req->type = REQ_BUSY; 1628 req->type = EIO_MKNOD;
1610 req->int1 = delay < 0. ? 0 : delay; 1629 req->int2 = (mode_t)mode;
1611 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1630 req->offs = dev;
1612 1631 req_set_path1 (req, pathname);
1632
1613 REQ_SEND; 1633 REQ_SEND;
1614} 1634}
1615 1635
1616void 1636void
1617aio_group (callback=&PL_sv_undef) 1637aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1618 SV * callback 1638 ALIAS:
1619 PROTOTYPE: ;$ 1639 aio_mtouch = EIO_MTOUCH
1640 aio_msync = EIO_MSYNC
1620 PPCODE: 1641 PPCODE:
1621{ 1642{
1643 STRLEN svlen;
1644 char *svptr = SvPVbyte (data, svlen);
1645 UV len = SvUV (length);
1646
1647 if (flags < 0)
1648 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1649
1650 if (offset < 0)
1651 offset += svlen;
1652
1653 if (offset < 0 || offset > svlen)
1654 croak ("offset outside of scalar");
1655
1656 if (!SvOK (length) || len + offset > svlen)
1657 len = svlen - offset;
1658
1659 {
1660 dREQ;
1661
1662 req->type = ix;
1663 req->sv2 = SvREFCNT_inc (data);
1664 req->ptr2 = (char *)svptr + offset;
1665 req->size = len;
1666 req->int1 = flags;
1667
1668 REQ_SEND;
1669 }
1670}
1671
1672void
1673aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1674 PPCODE:
1675{
1676 STRLEN svlen;
1677 char *svptr = SvPVbyte (data, svlen);
1678 UV len = SvUV (length);
1679
1680 if (offset < 0)
1681 offset += svlen;
1682
1683 if (offset < 0 || offset > svlen)
1684 croak ("offset outside of scalar");
1685
1686 if (!SvOK (length) || len + offset > svlen)
1687 len = svlen - offset;
1688
1689 {
1690 dREQ;
1691
1692 req->type = EIO_MLOCK;
1693 req->sv2 = SvREFCNT_inc (data);
1694 req->ptr2 = (char *)svptr + offset;
1695 req->size = len;
1696
1697 REQ_SEND;
1698 }
1699}
1700
1701void
1702aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1703 PPCODE:
1704{
1705 dREQ;
1706
1707 req->type = EIO_MLOCKALL;
1708 req->int1 = flags;
1709
1710 REQ_SEND;
1711}
1712
1713void
1714aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1715 PPCODE:
1716{
1717 int fd = s_fileno_croak (fh, 0);
1622 dREQ; 1718 dREQ;
1623 1719
1624 req->type = REQ_GROUP; 1720 req->type = EIO_CUSTOM;
1721 req->sv1 = newSVsv (fh);
1722 req->int1 = fd;
1625 1723
1626 req_send (req); 1724 req->feed = fiemap;
1627 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1725#if HAVE_FIEMAP
1628} 1726 /* keep our fingers crossed that the next two types are 64 bit */
1727 req->offs = start;
1728 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1729 req->int2 = flags;
1730 req->int3 = SvOK (count) ? SvIV (count) : -1;
1731#endif
1629 1732
1733 REQ_SEND;
1734}
1735
1630void 1736void
1631aio_nop (callback=&PL_sv_undef) 1737aio_busy (double delay, SV *callback = &PL_sv_undef)
1632 SV * callback
1633 PPCODE: 1738 PPCODE:
1634{ 1739{
1635 dREQ; 1740 dREQ;
1636 1741
1637 req->type = REQ_NOP; 1742 req->type = EIO_BUSY;
1743 req->nv1 = delay < 0. ? 0. : delay;
1638 1744
1639 REQ_SEND; 1745 REQ_SEND;
1640} 1746}
1641 1747
1748void
1749aio_group (SV *callback = &PL_sv_undef)
1750 PPCODE:
1751{
1752 dREQ;
1753
1754 req->type = EIO_GROUP;
1755
1756 PUTBACK;
1757 req_submit (req);
1758 SPAGAIN;
1759
1760 XPUSHs (req_sv (req, aio_grp_stash));
1761}
1762
1763void
1764aio_nop (SV *callback = &PL_sv_undef)
1765 ALIAS:
1766 aio_nop = EIO_NOP
1767 aio_sync = EIO_SYNC
1768 PPCODE:
1769{
1770 dREQ;
1771
1772 req->type = ix;
1773
1774 REQ_SEND;
1775}
1776
1642int 1777int
1643aioreq_pri (int pri = 0) 1778aioreq_pri (int pri = NO_INIT)
1644 PROTOTYPE: ;$
1645 CODE: 1779 CODE:
1646 RETVAL = next_pri - PRI_BIAS; 1780 RETVAL = next_pri;
1647 if (items > 0) 1781 if (items > 0)
1648 { 1782 {
1649 if (pri < PRI_MIN) pri = PRI_MIN; 1783 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650 if (pri > PRI_MAX) pri = PRI_MAX; 1784 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651 next_pri = pri + PRI_BIAS; 1785 next_pri = pri;
1652 } 1786 }
1653 OUTPUT: 1787 OUTPUT:
1654 RETVAL 1788 RETVAL
1655 1789
1656void 1790void
1657aioreq_nice (int nice = 0) 1791aioreq_nice (int nice = 0)
1658 CODE: 1792 CODE:
1659 nice = next_pri - nice; 1793 nice = next_pri - nice;
1660 if (nice < PRI_MIN) nice = PRI_MIN; 1794 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661 if (nice > PRI_MAX) nice = PRI_MAX; 1795 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662 next_pri = nice + PRI_BIAS; 1796 next_pri = nice;
1663 1797
1664void 1798void
1665flush () 1799flush ()
1666 PROTOTYPE:
1667 CODE: 1800 CODE:
1668 while (nreqs) 1801 while (eio_nreqs ())
1669 { 1802 {
1670 poll_wait (); 1803 poll_wait ();
1671 poll_cb (); 1804 poll_cb ();
1672 } 1805 }
1673 1806
1674int 1807int
1675poll() 1808poll ()
1676 PROTOTYPE:
1677 CODE: 1809 CODE:
1678 poll_wait (); 1810 poll_wait ();
1679 RETVAL = poll_cb (); 1811 RETVAL = poll_cb ();
1680 OUTPUT: 1812 OUTPUT:
1681 RETVAL 1813 RETVAL
1682 1814
1683int 1815int
1684poll_fileno() 1816poll_fileno ()
1685 PROTOTYPE:
1686 CODE: 1817 CODE:
1687 RETVAL = respipe [0]; 1818 RETVAL = s_epipe_fd (&respipe);
1688 OUTPUT: 1819 OUTPUT:
1689 RETVAL 1820 RETVAL
1690 1821
1691int 1822int
1692poll_cb(...) 1823poll_cb (...)
1693 PROTOTYPE: 1824 PROTOTYPE:
1694 CODE: 1825 CODE:
1695 RETVAL = poll_cb (); 1826 RETVAL = poll_cb ();
1696 OUTPUT: 1827 OUTPUT:
1697 RETVAL 1828 RETVAL
1698 1829
1699void 1830void
1700poll_wait() 1831poll_wait ()
1701 PROTOTYPE:
1702 CODE: 1832 CODE:
1703 poll_wait (); 1833 poll_wait ();
1704 1834
1705void
1706setsig (int signum = SIGIO)
1707 PROTOTYPE: ;$
1708 CODE:
1709{
1710 if (block_sig_level)
1711 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713 LOCK (reslock);
1714 main_tid = pthread_self ();
1715 main_sig = signum;
1716 UNLOCK (reslock);
1717
1718 if (main_sig && npending)
1719 pthread_kill (main_tid, main_sig);
1720}
1721
1722void
1723aio_block (SV *cb)
1724 PROTOTYPE: &
1725 PPCODE:
1726{
1727 int count;
1728
1729 block_sig ();
1730 PUSHMARK (SP);
1731 PUTBACK;
1732 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733 SPAGAIN;
1734 unblock_sig ();
1735
1736 if (SvTRUE (ERRSV))
1737 croak (0);
1738
1739 XSRETURN (count);
1740}
1741
1742int 1835int
1743nreqs() 1836nreqs ()
1744 PROTOTYPE:
1745 CODE: 1837 CODE:
1746 RETVAL = nreqs; 1838 RETVAL = eio_nreqs ();
1747 OUTPUT: 1839 OUTPUT:
1748 RETVAL 1840 RETVAL
1749 1841
1750int 1842int
1751nready() 1843nready ()
1752 PROTOTYPE:
1753 CODE: 1844 CODE:
1754 RETVAL = get_nready (); 1845 RETVAL = eio_nready ();
1755 OUTPUT: 1846 OUTPUT:
1756 RETVAL 1847 RETVAL
1757 1848
1758int 1849int
1759npending() 1850npending ()
1760 PROTOTYPE:
1761 CODE: 1851 CODE:
1762 RETVAL = get_npending (); 1852 RETVAL = eio_npending ();
1763 OUTPUT: 1853 OUTPUT:
1764 RETVAL 1854 RETVAL
1765 1855
1766int 1856int
1767nthreads() 1857nthreads ()
1768 PROTOTYPE:
1769 CODE: 1858 CODE:
1770 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1859 RETVAL = eio_nthreads ();
1771 RETVAL = started;
1772 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773 OUTPUT: 1860 OUTPUT:
1774 RETVAL 1861 RETVAL
1775 1862
1863int
1864fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1865 CODE:
1866 RETVAL = posix_fadvise (fh, offset, length, advice);
1867 OUTPUT:
1868 RETVAL
1869
1870IV
1871sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1872 CODE:
1873 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1874 OUTPUT:
1875 RETVAL
1876
1877void
1878mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1879 PPCODE:
1880 sv_unmagic (scalar, MMAP_MAGIC);
1881{
1882 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1883 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1884 if (addr == (void *)-1)
1885 XSRETURN_NO;
1886
1887 sv_force_normal (scalar);
1888
1889 /* we store the length in mg_obj, as namlen is I32 :/ */
1890 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1891 ->mg_obj = (SV *)length;
1892
1893 SvUPGRADE (scalar, SVt_PV); /* nop... */
1894
1895 if (!(prot & PROT_WRITE))
1896 SvREADONLY_on (scalar);
1897
1898 if (SvLEN (scalar))
1899 Safefree (SvPVX (scalar));
1900
1901 SvPVX (scalar) = (char *)addr;
1902 SvCUR_set (scalar, length);
1903 SvLEN_set (scalar, 0);
1904 SvPOK_only (scalar);
1905
1906 XSRETURN_YES;
1907}
1908
1909void
1910munmap (SV *scalar)
1911 CODE:
1912 sv_unmagic (scalar, MMAP_MAGIC);
1913
1914int
1915madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1916 ALIAS:
1917 mprotect = 1
1918 CODE:
1919{
1920 STRLEN svlen;
1921 void *addr = SvPVbyte (scalar, svlen);
1922 STRLEN len = SvUV (length);
1923
1924 if (offset < 0)
1925 offset += svlen;
1926
1927 if (offset < 0 || offset > svlen)
1928 croak ("offset outside of scalar");
1929
1930 if (!SvOK (length) || len + offset > svlen)
1931 len = svlen - offset;
1932
1933 addr = (void *)(((intptr_t)addr) + offset);
1934 eio_page_align (&addr, &len);
1935
1936 switch (ix)
1937 {
1938 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1939 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1940 }
1941}
1942 OUTPUT:
1943 RETVAL
1944
1945int
1946munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1947 CODE:
1948{
1949 STRLEN svlen;
1950 void *addr = SvPVbyte (scalar, svlen);
1951 size_t len = SvUV (length);
1952
1953 if (offset < 0)
1954 offset += svlen;
1955
1956 if (offset < 0 || offset > svlen)
1957 croak ("offset outside of scalar");
1958
1959 if (!SvOK (length) || len + offset > svlen)
1960 len = svlen - offset;
1961
1962 addr = (void *)(((intptr_t)addr) + offset);
1963 eio_page_align (&addr, &len);
1964#if _POSIX_MEMLOCK_RANGE
1965 RETVAL = munlock (addr, len);
1966#else
1967 RETVAL = EIO_ENOSYS ();
1968#endif
1969}
1970 OUTPUT:
1971 RETVAL
1972
1973int
1974munlockall ()
1975 CODE:
1976#if _POSIX_MEMLOCK
1977 munlockall ();
1978#else
1979 RETVAL = EIO_ENOSYS ();
1980#endif
1981 OUTPUT:
1982 RETVAL
1983
1984int
1985splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1986 CODE:
1987{
1988#if HAVE_LINUX_SPLICE
1989 loff_t off_in_, off_out_;
1990 RETVAL = splice (
1991 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1992 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1993 length, flags
1994 );
1995#else
1996 RETVAL = EIO_ENOSYS ();
1997#endif
1998}
1999 OUTPUT:
2000 RETVAL
2001
2002int
2003tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2004 CODE:
2005#if HAVE_LINUX_SPLICE
2006 RETVAL = tee (rfh, wfh, length, flags);
2007#else
2008 RETVAL = EIO_ENOSYS ();
2009#endif
2010 OUTPUT:
2011 RETVAL
2012
2013int
2014pipesize (aio_rfd rfh, int new_size = -1)
2015 PROTOTYPE: $;$
2016 CODE:
2017#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2018 if (new_size >= 0)
2019 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2020 else
2021 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2022#else
2023 errno = ENOSYS;
2024 RETVAL = -1;
2025#endif
2026 OUTPUT:
2027 RETVAL
2028
2029void
2030pipe2 (int flags = 0)
2031 PROTOTYPE: ;$
2032 PPCODE:
2033{
2034 int fd[2];
2035 int res;
2036
2037 if (flags)
2038#if HAVE_PIPE2
2039 res = pipe2 (fd, flags);
2040#else
2041 res = (errno = ENOSYS, -1);
2042#endif
2043 else
2044 res = pipe (fd);
2045
2046 if (!res)
2047 {
2048 EXTEND (SP, 2);
2049 PUSHs (newmortalFH (fd[0], O_RDONLY));
2050 PUSHs (newmortalFH (fd[1], O_WRONLY));
2051 }
2052}
2053
2054void _on_next_submit (SV *cb)
2055 CODE:
2056 SvREFCNT_dec (on_next_submit);
2057 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2058
1776PROTOTYPES: DISABLE 2059PROTOTYPES: DISABLE
2060
2061MODULE = IO::AIO PACKAGE = IO::AIO::WD
2062
2063BOOT:
2064{
2065 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2066 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2067}
2068
2069void
2070DESTROY (SV *self)
2071 CODE:
2072{
2073 aio_wd wd = SvAIO_WD (self);
2074#if HAVE_AT
2075 {
2076 SV *callback = &PL_sv_undef;
2077 dREQ; /* clobbers next_pri :/ */
2078 next_pri = req->pri; /* restore next_pri */
2079 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2080 req->type = EIO_WD_CLOSE;
2081 req->wd = wd;
2082 REQ_SEND;
2083 }
2084#else
2085 eio_wd_close_sync (wd);
2086#endif
2087}
1777 2088
1778MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2089MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779 2090
1780void 2091void
1781cancel (aio_req_ornot req) 2092cancel (aio_req_ornot req)
1782 CODE: 2093 CODE:
1783 req_cancel (req); 2094 eio_cancel (req);
1784 2095
1785void 2096void
1786cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2097cb (aio_req_ornot req, SV *callback = NO_INIT)
1787 CODE: 2098 PPCODE:
2099{
2100 if (GIMME_V != G_VOID)
2101 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2102
2103 if (items > 1)
2104 {
2105 SV *cb_cv = get_cb (callback);
2106
1788 SvREFCNT_dec (req->callback); 2107 SvREFCNT_dec (req->callback);
1789 req->callback = newSVsv (callback); 2108 req->callback = SvREFCNT_inc (cb_cv);
2109 }
2110}
1790 2111
1791MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2112MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792 2113
1793void 2114void
1794add (aio_req grp, ...) 2115add (aio_req grp, ...)
1795 PPCODE: 2116 PPCODE:
1796{ 2117{
1797 int i; 2118 int i;
1798 aio_req req;
1799
1800 if (main_sig && !block_sig_level)
1801 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802 2119
1803 if (grp->int1 == 2) 2120 if (grp->int1 == 2)
1804 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2121 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805 2122
1806 for (i = 1; i < items; ++i ) 2123 for (i = 1; i < items; ++i )
1807 { 2124 {
2125 aio_req req;
2126
1808 if (GIMME_V != G_VOID) 2127 if (GIMME_V != G_VOID)
1809 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2128 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810 2129
1811 req = SvAIO_REQ (ST (i)); 2130 req = SvAIO_REQ (ST (i));
1812 2131
1813 if (req) 2132 if (req)
1814 { 2133 eio_grp_add (grp, req);
1815 ++grp->size;
1816 req->grp = grp;
1817
1818 req->grp_prev = 0;
1819 req->grp_next = grp->grp_first;
1820
1821 if (grp->grp_first)
1822 grp->grp_first->grp_prev = req;
1823
1824 grp->grp_first = req;
1825 }
1826 } 2134 }
1827} 2135}
1828 2136
1829void 2137void
1830cancel_subs (aio_req_ornot req) 2138cancel_subs (aio_req_ornot req)
… …
1839 AV *av; 2147 AV *av;
1840 2148
1841 grp->errorno = errno; 2149 grp->errorno = errno;
1842 2150
1843 av = newAV (); 2151 av = newAV ();
2152 av_extend (av, items - 1);
1844 2153
1845 for (i = 1; i < items; ++i ) 2154 for (i = 1; i < items; ++i )
1846 av_push (av, newSVsv (ST (i))); 2155 av_push (av, newSVsv (ST (i)));
1847 2156
1848 SvREFCNT_dec (grp->sv1); 2157 SvREFCNT_dec (grp->sv1);
… …
1855 grp->errorno = errorno; 2164 grp->errorno = errorno;
1856 2165
1857void 2166void
1858limit (aio_req grp, int limit) 2167limit (aio_req grp, int limit)
1859 CODE: 2168 CODE:
1860 grp->int2 = limit; 2169 eio_grp_limit (grp, limit);
1861 aio_grp_feed (grp);
1862 2170
1863void 2171void
1864feed (aio_req grp, SV *callback=&PL_sv_undef) 2172feed (aio_req grp, SV *callback = &PL_sv_undef)
1865 CODE: 2173 CODE:
1866{ 2174{
1867 SvREFCNT_dec (grp->sv2); 2175 SvREFCNT_dec (grp->sv2);
1868 grp->sv2 = newSVsv (callback); 2176 grp->sv2 = newSVsv (callback);
2177 grp->feed = aio_grp_feed;
1869 2178
1870 if (grp->int2 <= 0) 2179 if (grp->int2 <= 0)
1871 grp->int2 = 2; 2180 grp->int2 = 2;
1872 2181
1873 aio_grp_feed (grp); 2182 eio_grp_limit (grp, grp->int2);
1874} 2183}
1875 2184

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