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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 1.211 by root, Sat Apr 7 00:50:33 2012 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
21# include <sys/mman.h>
22#endif
23
25# if __linux 24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/fiemap.h>
28# define HAVE_FIEMAP 1
29# endif
30#endif
31
32/* perl namespace pollution */
33#undef VERSION
34
35/* perl stupidly overrides readdir and maybe others */
36/* with thread-unsafe versions, imagine that :( */
37#undef readdir
38#undef opendir
39#undef closedir
40
41#ifdef _WIN32
42
43 // perl overrides all those nice libc functions
44
45 #undef malloc
46 #undef free
47 #undef open
48 #undef read
49 #undef write
50 #undef send
51 #undef recv
52 #undef stat
53 #undef lstat
54 #undef fstat
55 #undef truncate
56 #undef ftruncate
57 #undef open
58 #undef link
59 #undef close
60 #undef unlink
61 #undef mkdir
62 #undef rmdir
63 #undef rename
64 #undef lseek
65 #undef opendir
66 #undef readdir
67 #undef closedir
68 #undef chmod
69 #undef fchmod
70 #undef dup
71 #undef dup2
72 #undef abort
73 #undef pipe
74
75 #define EIO_STRUCT_STAT struct _stati64
76 #define EIO_STRUCT_STATI64
77
78#else
79
80 #include <sys/time.h>
26# include <sys/sendfile.h> 81 #include <sys/select.h>
27# elif __freebsd 82 #include <unistd.h>
28# include <sys/socket.h> 83 #include <utime.h>
29# include <sys/uio.h> 84 #include <signal.h>
30# elif __hpux 85
31# include <sys/socket.h> 86 #define EIO_STRUCT_STAT Stat_t
32# elif __solaris /* not yet */ 87
33# include <sys/sendfile.h> 88#endif
89
90/*****************************************************************************/
91
92#if __GNUC__ >= 3
93# define expect(expr,value) __builtin_expect ((expr),(value))
94#else
95# define expect(expr,value) (expr)
96#endif
97
98#define expect_false(expr) expect ((expr) != 0, 0)
99#define expect_true(expr) expect ((expr) != 0, 1)
100
101/*****************************************************************************/
102
103typedef SV SV8; /* byte-sv, used for argument-checking */
104typedef int aio_rfd; /* read file desriptor */
105typedef int aio_wfd; /* write file descriptor */
106
107static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
108
109#define EIO_REQ_MEMBERS \
110 SV *callback; \
111 SV *sv1, *sv2; \
112 SV *sv3, *sv4; \
113 STRLEN stroffset; \
114 SV *self;
115
116#define EIO_NO_WRAPPERS 1
117
118#include "libeio/config.h"
119#include "libeio/eio.h"
120
121static int req_invoke (eio_req *req);
122#define EIO_FINISH(req) req_invoke (req)
123static void req_destroy (eio_req *grp);
124#define EIO_DESTROY(req) req_destroy (req)
125
126#include "libeio/eio.c"
127
128#if !HAVE_POSIX_FADVISE
129# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
130#endif
131
132#if !HAVE_POSIX_MADVISE
133# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
134#endif
135
136#ifndef MAP_ANONYMOUS
137# ifdef MAP_ANON
138# define MAP_ANONYMOUS MAP_ANON
34# else 139# else
35# error sendfile support requested but not available 140# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 141# endif
37#endif 142#endif
38 143
39/* number of seconds after which idle threads exit */ 144/* defines all sorts of constants to 0 unless they are already defined */
40#define IDLE_TIMEOUT 10 145#include "def0.h"
41 146
42/* used for struct dirent, AIX doesn't provide it */ 147#ifndef makedev
43#ifndef NAME_MAX 148# define makedev(maj,min) (((maj) << 8) | (min))
44# define NAME_MAX 4096
45#endif 149#endif
150#ifndef major
151# define major(dev) ((dev) >> 8)
152#endif
153#ifndef minor
154# define minor(dev) ((dev) & 0xff)
155#endif
46 156
47/* buffer size for various temporary buffers */ 157#ifndef PAGESIZE
48#define AIO_BUFSIZE 65536 158# define PAGESIZE sysconf (_SC_PAGESIZE)
159#endif
49 160
50#define dBUF \ 161/*****************************************************************************/
51 char *aio_buf; \ 162
52 LOCK (wrklock); \ 163static void
53 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 164fiemap (eio_req *req)
54 UNLOCK (wrklock); \ 165{
55 if (!aio_buf) \ 166 req->result = -1;
167
168#if HAVE_FIEMAP
169 int count = req->int3;
170
171 /* heuristic: first try with 64 extents if we don't know how many, */
172 /* as most files have (hopefully) fewer than this many extents */
173 /* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
174 if (count < 0)
175 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
176
177 for (;;)
178 {
179 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
180 errno = ENOMEM;
181 if (!fiemap)
56 return -1; 182 return;
57 183
58typedef SV SV8; /* byte-sv, used for argument-checking */ 184 req->ptr1 = fiemap;
185 req->flags |= EIO_FLAG_PTR1_FREE;
186
187 fiemap->fm_start = req->offs;
188 fiemap->fm_length = req->size;
189 fiemap->fm_flags = req->int2;
190 fiemap->fm_extent_count = count;
191
192 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
193 return;
194
195 if (req->int3 >= 0)
196 break; /* when not autosizing we are done */
197
198 if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
199 break; /* autosizing successful, we are done */
200
201 fiemap->fm_flags = req->int2;
202 fiemap->fm_extent_count = 0;
203
204 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
205 return;
206
207 count = fiemap->fm_mapped_extents;
208
209 free (fiemap);
210 }
211
212 req->result = 0;
213
214#else
215 errno = ENOSYS;
216#endif
217}
218
219/*****************************************************************************/
59 220
60enum { 221enum {
61 REQ_QUIT, 222 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
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}; 223};
73 224
74#define AIO_REQ_KLASS "IO::AIO::REQ"
75#define AIO_GRP_KLASS "IO::AIO::GRP"
76
77typedef struct aio_cb
78{
79 struct aio_cb *volatile next;
80
81 SV *callback, *fh;
82 SV *sv1, *sv2;
83 void *ptr1, *ptr2;
84 off_t offs;
85 size_t size;
86 ssize_t result;
87
88 STRLEN stroffset;
89 int type;
90 int int1, int2;
91 int errorno;
92 mode_t mode; /* open */
93
94 unsigned char flags;
95 unsigned char pri;
96
97 SV *self; /* the perl counterpart of this request, if any */
98 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
99} aio_cb;
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; 225typedef eio_req *aio_req;
108typedef aio_cb *aio_req_ornot; 226typedef eio_req *aio_req_ornot;
227typedef eio_wd aio_wd;
109 228
110enum { 229static SV *on_next_submit;
111 PRI_MIN = -4, 230static int next_pri = EIO_PRI_DEFAULT;
112 PRI_MAX = 4, 231static int max_outstanding;
113 232
114 DEFAULT_PRI = 0, 233static s_epipe respipe;
115 PRI_BIAS = -PRI_MIN,
116 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117};
118 234
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;
141
142 if (!main_sig)
143 return;
144
145 sigemptyset (&ss);
146 sigaddset (&ss, main_sig);
147 pthread_sigmask (SIG_BLOCK, &ss, 0);
148}
149
150void unblock_sig ()
151{
152 sigset_t ss;
153
154 if (--block_sig_level)
155 return;
156
157 if (!main_sig)
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 {
190 closedir (wrk->dirp);
191 wrk->dirp = 0;
192 }
193
194 if (wrk->dbuf)
195 {
196 free (wrk->dbuf);
197 wrk->dbuf = 0;
198 }
199}
200
201static void worker_free (worker *wrk)
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;
296
297 --q->size;
298
299 for (pri = NUM_PRI; pri--; )
300 {
301 aio_req req = q->qs[pri];
302
303 if (req)
304 {
305 if (!(q->qs[pri] = req->next))
306 q->qe[pri] = 0;
307
308 return req;
309 }
310 }
311
312 abort ();
313}
314
315static int poll_cb ();
316static int req_invoke (aio_req req);
317static void req_free (aio_req req); 235static void req_destroy (aio_req req);
318static void req_cancel (aio_req req); 236static void req_cancel (aio_req req);
319 237
238static void
239want_poll (void)
240{
241 /* write a dummy byte to the pipe so fh becomes ready */
242 s_epipe_signal (&respipe);
243}
244
245static void
246done_poll (void)
247{
248 /* read any signals sent by the worker threads */
249 s_epipe_drain (&respipe);
250}
251
320/* must be called at most once */ 252/* must be called at most once */
321static SV *req_sv (aio_req req, const char *klass) 253static SV *
254req_sv (aio_req req, HV *stash)
322{ 255{
323 if (!req->self) 256 if (!req->self)
324 { 257 {
325 req->self = (SV *)newHV (); 258 req->self = (SV *)newHV ();
326 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 259 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327 } 260 }
328 261
329 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 262 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330} 263}
331 264
332static aio_req SvAIO_REQ (SV *sv) 265static SV *
266newSVaio_wd (aio_wd wd)
267{
268 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
269}
270
271static aio_req
272SvAIO_REQ (SV *sv)
333{ 273{
334 MAGIC *mg; 274 MAGIC *mg;
335 275
336 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 276 if (!SvROK (sv)
277 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
278 || (SvSTASH (SvRV (sv)) != aio_grp_stash
279 && SvSTASH (SvRV (sv)) != aio_req_stash
280 && !sv_derived_from (sv, "IO::AIO::REQ")))
337 croak ("object of class " AIO_REQ_KLASS " expected"); 281 croak ("object of class IO::AIO::REQ expected");
338 282
339 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 283 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340 284
341 return mg ? (aio_req)mg->mg_ptr : 0; 285 return mg ? (aio_req)mg->mg_ptr : 0;
342} 286}
343 287
288static aio_wd
289SvAIO_WD (SV *sv)
290{
291 if (!SvROK (sv)
292 || SvTYPE (SvRV (sv)) != SVt_PVMG
293 || SvSTASH (SvRV (sv)) != aio_wd_stash)
294 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
295
296 return (aio_wd)(long)SvIVX (SvRV (sv));
297}
298
299static void
344static void aio_grp_feed (aio_req grp) 300aio_grp_feed (aio_req grp)
345{ 301{
346 block_sig (); 302 if (grp->sv2 && SvOK (grp->sv2))
347
348 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349 { 303 {
350 int old_len = grp->size;
351
352 if (grp->sv2 && SvOK (grp->sv2))
353 {
354 dSP; 304 dSP;
355 305
356 ENTER; 306 ENTER;
357 SAVETMPS; 307 SAVETMPS;
358 PUSHMARK (SP); 308 PUSHMARK (SP);
359 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 309 XPUSHs (req_sv (grp, aio_grp_stash));
360 PUTBACK; 310 PUTBACK;
361 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 311 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362 SPAGAIN; 312 SPAGAIN;
363 FREETMPS; 313 FREETMPS;
364 LEAVE; 314 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 } 315 }
375
376 unblock_sig ();
377} 316}
378 317
379static void aio_grp_dec (aio_req grp) 318static void
319req_submit (eio_req *req)
380{ 320{
381 --grp->size; 321 eio_submit (req);
382 322
383 /* call feeder, if applicable */ 323 if (expect_false (on_next_submit))
384 aio_grp_feed (grp);
385
386 /* finish, if done */
387 if (!grp->size && grp->int1)
388 { 324 {
389 block_sig (); 325 dSP;
326 SV *cb = sv_2mortal (on_next_submit);
390 327
391 if (!req_invoke (grp)) 328 on_next_submit = 0;
392 {
393 req_free (grp);
394 unblock_sig ();
395 croak (0);
396 }
397 329
398 req_free (grp); 330 PUSHMARK (SP);
399 unblock_sig (); 331 PUTBACK;
332 call_sv (cb, G_DISCARD | G_EVAL);
400 } 333 }
401} 334}
402 335
336static int
403static int req_invoke (aio_req req) 337req_invoke (eio_req *req)
404{ 338{
405 dSP;
406
407 if (req->flags & FLAG_SV1_RO_OFF) 339 if (req->flags & FLAG_SV2_RO_OFF)
408 SvREADONLY_off (req->sv1); 340 SvREADONLY_off (req->sv2);
409 341
410 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 342 if (!EIO_CANCELLED (req) && req->callback)
411 { 343 {
344 dSP;
345 static SV *sv_result_cache; /* caches the result integer SV */
346 SV *sv_result;
347
412 ENTER; 348 ENTER;
413 SAVETMPS; 349 SAVETMPS;
414 PUSHMARK (SP); 350 PUSHMARK (SP);
415 EXTEND (SP, 1); 351 EXTEND (SP, 1);
416 352
353 /* do not recreate the result IV from scratch each time */
354 if (expect_true (sv_result_cache))
355 {
356 sv_result = sv_result_cache; sv_result_cache = 0;
357 SvIV_set (sv_result, req->result);
358 SvIOK_only (sv_result);
359 }
360 else
361 {
362 sv_result = newSViv (req->result);
363 SvREADONLY_on (sv_result);
364 }
365
417 switch (req->type) 366 switch (req->type)
418 { 367 {
368 case EIO_WD_OPEN:
369 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
370 break;
371
419 case REQ_READDIR: 372 case EIO_READDIR:
420 { 373 {
421 SV *rv = &PL_sv_undef; 374 SV *rv = &PL_sv_undef;
422 375
423 if (req->result >= 0) 376 if (req->result >= 0)
424 { 377 {
425 int i; 378 int i;
426 char *buf = req->ptr2; 379 char *names = (char *)req->ptr2;
380 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427 AV *av = newAV (); 381 AV *av = newAV ();
428 382
429 av_extend (av, req->result - 1); 383 av_extend (av, req->result - 1);
430 384
431 for (i = 0; i < req->result; ++i) 385 for (i = 0; i < req->result; ++i)
432 { 386 {
433 SV *sv = newSVpv (buf, 0); 387 if (req->int1 & EIO_READDIR_DENTS)
388 {
389 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434 390
391 if (req->int1 & EIO_READDIR_CUSTOM2)
392 {
393 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
394 AV *avent = newAV ();
395
396 av_extend (avent, 2);
397
398 if (!sv_type [ent->type])
399 {
400 sv_type [ent->type] = newSViv (ent->type);
401 SvREADONLY_on (sv_type [ent->type]);
402 }
403
404 av_store (avent, 0, namesv);
405 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
406 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
407
408 av_store (av, i, newRV_noinc ((SV *)avent));
409 }
410 else
435 av_store (av, i, sv); 411 av_store (av, i, namesv);
412
413 ++ent;
414 }
415 else
416 {
417 SV *name = newSVpv (names, 0);
418 av_store (av, i, name);
436 buf += SvCUR (sv) + 1; 419 names += SvCUR (name) + 1;
420 }
437 } 421 }
438 422
439 rv = sv_2mortal (newRV_noinc ((SV *)av)); 423 rv = sv_2mortal (newRV_noinc ((SV *)av));
440 } 424 }
441 425
442 PUSHs (rv); 426 PUSHs (rv);
427
428 if (req->int1 & EIO_READDIR_CUSTOM1)
429 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443 } 430 }
444 break; 431 break;
445 432
446 case REQ_OPEN: 433 case EIO_OPEN:
447 { 434 {
448 /* convert fd to fh */ 435 /* convert fd to fh */
449 SV *fh; 436 SV *fh = &PL_sv_undef;
450 437
451 PUSHs (sv_2mortal (newSViv (req->result))); 438 if (req->result >= 0)
452 PUTBACK; 439 {
453 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 440 GV *gv = (GV *)sv_newmortal ();
454 SPAGAIN; 441 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
442 char sym [64];
443 int symlen;
444
445 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
446 gv_init (gv, aio_stash, sym, symlen, 0);
455 447
456 fh = POPs; 448 symlen = snprintf (
457 PUSHMARK (SP); 449 sym,
450 sizeof (sym),
451 "%s&=%d",
452 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
453 (int)req->result
454 );
455
456 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
457 fh = (SV *)gv;
458 }
459
458 XPUSHs (fh); 460 PUSHs (fh);
459 } 461 }
460 break; 462 break;
461 463
464 case EIO_STATVFS:
465 case EIO_FSTATVFS:
466 {
467 SV *rv = &PL_sv_undef;
468
469#ifndef _WIN32
470 if (req->result >= 0)
471 {
472 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
473 HV *hv = newHV ();
474
475 rv = sv_2mortal (newRV_noinc ((SV *)hv));
476
477 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
478 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
479 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
480 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
481 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
482 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
483 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
484 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
485 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
486 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
487 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
488 }
489#endif
490
491 PUSHs (rv);
492 }
493
494 break;
495
462 case REQ_GROUP: 496 case EIO_GROUP:
463 req->int1 = 2; /* mark group as finished */ 497 req->int1 = 2; /* mark group as finished */
464 498
465 if (req->sv1) 499 if (req->sv1)
466 { 500 {
467 int i; 501 int i;
… …
471 for (i = 0; i <= AvFILL (av); ++i) 505 for (i = 0; i <= AvFILL (av); ++i)
472 PUSHs (*av_fetch (av, i, 0)); 506 PUSHs (*av_fetch (av, i, 0));
473 } 507 }
474 break; 508 break;
475 509
476 case REQ_NOP: 510 case EIO_NOP:
477 case REQ_BUSY: 511 case EIO_BUSY:
478 break; 512 break;
479 513
480 case REQ_READLINK: 514 case EIO_READLINK:
515 case EIO_REALPATH:
481 if (req->result > 0) 516 if (req->result > 0)
517 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
518 break;
519
520 case EIO_STAT:
521 case EIO_LSTAT:
522 case EIO_FSTAT:
523 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
524
525 if (!(PL_laststatval = req->result))
526 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
527 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
528
529 PUSHs (sv_result);
530 break;
531
532 case EIO_SEEK:
533 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
534 break;
535
536 case EIO_READ:
537 {
538 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
539 *SvEND (req->sv2) = 0;
540 SvPOK_only (req->sv2);
541 SvSETMAGIC (req->sv2);
542 PUSHs (sv_result);
543 }
544 break;
545
546 case EIO_CUSTOM:
547 if (req->feed == fiemap)
482 { 548 {
483 SvCUR_set (req->sv1, req->result); 549#if HAVE_FIEMAP
484 *SvEND (req->sv1) = 0;
485 PUSHs (req->sv1); 550 if (!req->result)
551 {
552 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
553
554 if (fiemap->fm_extent_count)
555 {
556 AV *av = newAV ();
557 int i;
558
559 while (fiemap->fm_mapped_extents)
560 {
561 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
562 AV *ext_av = newAV ();
563
564 av_store (ext_av, 3, newSVuv (extent->fe_flags));
565 av_store (ext_av, 2, newSVval64 (extent->fe_length));
566 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
567 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
568
569 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
570 }
571
572 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
573 }
574 else
575 {
576 SvIV_set (sv_result, fiemap->fm_mapped_extents);
577 PUSHs (sv_result);
578 }
579 }
580#endif
486 } 581 }
582 else
583 PUSHs (sv_result);
487 break; 584 break;
488 585
489 case REQ_STAT: 586 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
490 case REQ_LSTAT: 587 if (req->result > 0)
491 case REQ_FSTAT: 588 SvIV_set (sv_result, 0);
492 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 589 /* 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;
503 590
504 default: 591 default:
505 PUSHs (sv_2mortal (newSViv (req->result))); 592 PUSHs (sv_result);
506 break; 593 break;
507 } 594 }
508 595
509 errno = req->errorno; 596 errno = req->errorno;
510 597
511 PUTBACK; 598 PUTBACK;
512 call_sv (req->callback, G_VOID | G_EVAL); 599 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513 SPAGAIN; 600 SPAGAIN;
601
602 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
603 SvREFCNT_dec (sv_result);
604 else
605 sv_result_cache = sv_result;
514 606
515 FREETMPS; 607 FREETMPS;
516 LEAVE; 608 LEAVE;
609
610 PUTBACK;
517 } 611 }
518 612
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); 613 return !!SvTRUE (ERRSV);
534} 614}
535 615
536static void req_free (aio_req req) 616static void
617req_destroy (aio_req req)
537{ 618{
538 if (req->self) 619 if (req->self)
539 { 620 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 621 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 622 SvREFCNT_dec (req->self);
542 } 623 }
543 624
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 625 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 626 SvREFCNT_dec (req->sv2);
627 SvREFCNT_dec (req->sv3);
628 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 629 SvREFCNT_dec (req->callback);
548 630
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 631 free (req);
553} 632}
554 633
634static void
555static void req_cancel_subs (aio_req grp) 635req_cancel_subs (aio_req grp)
556{ 636{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 637 if (grp->type != EIO_GROUP)
560 return; 638 return;
561 639
562 SvREFCNT_dec (grp->sv2); 640 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 641 grp->sv2 = 0;
564 642
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 643 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 644}
568 645
569static void req_cancel (aio_req req) 646static void ecb_cold
647create_respipe (void)
570{ 648{
571 req->flags |= FLAG_CANCELLED; 649 if (s_epipe_renew (&respipe))
572 650 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 651}
575 652
576static void *aio_proc(void *arg); 653static void
577 654poll_wait (void)
578static void start_thread (void)
579{ 655{
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) 656 while (eio_nreqs ())
676 { 657 {
677 int size; 658 int size;
678 if (WORDACCESS_UNSAFE) LOCK (reslock); 659
660 X_LOCK (reslock);
679 size = res_queue.size; 661 size = res_queue.size;
680 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 662 X_UNLOCK (reslock);
681 663
682 if (size) 664 if (size)
683 return; 665 return;
684 666
685 maybe_start_thread (); 667 etp_maybe_start_thread ();
686 668
687 FD_ZERO(&rfd); 669 s_epipe_wait (&respipe);
688 FD_SET(respipe [0], &rfd);
689
690 select (respipe [0] + 1, &rfd, 0, 0, 0);
691 } 670 }
692} 671}
693 672
694static int poll_cb () 673static int
674poll_cb (void)
695{ 675{
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 (;;) 676 for (;;)
709 { 677 {
710 for (;;) 678 int res = eio_poll ();
679
680 if (res > 0)
681 croak (0);
682
683 if (!max_outstanding || max_outstanding > eio_nreqs ())
684 return res;
685
686 poll_wait ();
687 }
688}
689
690static void ecb_cold
691reinit (void)
692{
693 create_respipe ();
694
695 if (eio_init (want_poll, done_poll) < 0)
696 croak ("IO::AIO: unable to initialise eio library");
697}
698
699/*****************************************************************************/
700
701#if !_POSIX_MAPPED_FILES
702# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
703# define munmap(addr,length) (errno = ENOSYS, -1)
704#endif
705
706#if !_POSIX_MEMORY_PROTECTION
707# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
708# define PROT_NONE 0
709# define PROT_WRITE 0
710# define MAP_PRIVATE 0
711# define MAP_SHARED 0
712# define MAP_FIXED 0
713#endif
714
715#define MMAP_MAGIC PERL_MAGIC_ext
716
717static int ecb_cold
718mmap_free (pTHX_ SV *sv, MAGIC *mg)
719{
720 int old_errno = errno;
721 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
722 errno = old_errno;
723
724 mg->mg_obj = 0; /* just in case */
725
726 SvREADONLY_off (sv);
727
728 if (SvPVX (sv) != mg->mg_ptr)
729 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
730
731 SvCUR_set (sv, 0);
732 SvPVX (sv) = 0;
733 SvOK_off (sv);
734
735 return 0;
736}
737
738static MGVTBL mmap_vtbl = {
739 0, 0, 0, 0, mmap_free
740};
741
742/*****************************************************************************/
743
744static SV *
745get_cb (SV *cb_sv)
746{
747 SvGETMAGIC (cb_sv);
748 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
749}
750
751static aio_req ecb_noinline
752dreq (SV *callback)
753{
754 SV *cb_cv;
755 aio_req req;
756 int req_pri = next_pri;
757 next_pri = EIO_PRI_DEFAULT;
758
759 cb_cv = get_cb (callback);
760
761 req = calloc (sizeof (*req), 1);
762 if (!req)
763 croak ("out of memory during eio_req allocation");
764
765 req->callback = SvREFCNT_inc (cb_cv);
766 req->pri = req_pri;
767
768 return req;
769}
770
771#define dREQ \
772 aio_req req = dreq (callback); \
773
774#define REQ_SEND \
775 PUTBACK; \
776 req_submit (req); \
777 SPAGAIN; \
778 \
779 if (GIMME_V != G_VOID) \
780 XPUSHs (req_sv (req, aio_req_stash));
781
782ecb_inline void
783req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
784{
785 if (expect_false (SvROK (path)))
786 {
787 SV *rv = SvRV (path);
788 SV *wdob;
789
790 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
711 { 791 {
712 maybe_start_thread (); 792 path = AvARRAY (rv)[1];
793 wdob = AvARRAY (rv)[0];
713 794
714 LOCK (reslock); 795 if (SvOK (wdob))
715 req = reqq_shift (&res_queue);
716
717 if (req)
718 { 796 {
719 --npending; 797 *wd = SvAIO_WD (wdob);
720 798 *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 } 799 }
742 else 800 else
743 { 801 *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 } 802 }
803 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
804 {
805 *wd = (aio_wd)(long)SvIVX (rv);
806 *wdsv = SvREFCNT_inc_NN (rv);
807 *ptr = ".";
808 return; /* path set to "." */
809 }
810 else
811 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
812 }
767 813
768 if (nreqs <= max_outstanding) 814 *pathsv = newSVsv (path);
815 *ptr = SvPVbyte_nolen (*pathsv);
816}
817
818static void ecb_noinline
819req_set_path1 (aio_req req, SV *path)
820{
821 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
822}
823
824static void ecb_noinline
825req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
826{
827 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
828
829 switch (SvTYPE (rv))
830 {
831 case SVt_PVIO:
832 case SVt_PVLV:
833 case SVt_PVGV:
834 req->type = type_fh;
835 req->sv1 = newSVsv (fh_or_path);
836 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
769 break; 837 break;
770 838
771 poll_wait (); 839 default:
772 840 req->type = type_path;
773 ++maxreqs; 841 req_set_path1 (req, fh_or_path);
842 break;
774 } 843 }
775
776 unblock_sig ();
777 return count;
778} 844}
779 845
780static void create_pipe () 846XS(boot_IO__AIO) ecb_cold;
781{
782 if (pipe (respipe))
783 croak ("unable to initialize result pipe");
784 847
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 848MODULE = IO::AIO PACKAGE = IO::AIO
1265 849
1266PROTOTYPES: ENABLE 850PROTOTYPES: ENABLE
1267 851
1268BOOT: 852BOOT:
1269{ 853{
854 static const struct {
855 const char *name;
856 IV iv;
857 } *civ, const_iv[] = {
858# define const_niv(name, value) { # name, (IV) value },
859# define const_iv(name) { # name, (IV) name },
860# define const_eio(name) { # name, (IV) EIO_ ## name },
861
862 /* you have to re-run ./gendef0 after adding/Removing any constants here */
863
864 const_iv (ENOSYS)
865 const_iv (EXDEV)
866 const_iv (EBADR)
867
868 const_iv (O_RDONLY)
869 const_iv (O_WRONLY)
870 const_iv (O_RDWR)
871 const_iv (O_CREAT)
872 const_iv (O_TRUNC)
873 const_iv (O_EXCL)
874 const_iv (O_APPEND)
875
876 const_iv (O_ASYNC)
877 const_iv (O_DIRECT)
878 const_iv (O_NOATIME)
879
880 const_iv (O_CLOEXEC)
881 const_iv (O_NOCTTY)
882 const_iv (O_NOFOLLOW)
883 const_iv (O_NONBLOCK)
884 const_iv (O_EXEC)
885 const_iv (O_SEARCH)
886 const_iv (O_DIRECTORY)
887 const_iv (O_DSYNC)
888 const_iv (O_RSYNC)
889 const_iv (O_SYNC)
890 const_iv (O_TTY_INIT)
891
892 const_iv (S_IFIFO)
893 const_iv (S_IFCHR)
894 const_iv (S_IFBLK)
895 const_iv (S_IFLNK)
896 const_iv (S_IFREG)
897 const_iv (S_IFDIR)
898 const_iv (S_IFWHT)
899 const_iv (S_IFSOCK)
900 const_iv (S_IFMT)
901
902 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
903 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
904 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
905 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
906 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
907 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
908
909 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
910 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
911 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
912 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
913 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
914
915 const_iv (ST_RDONLY)
916 const_iv (ST_NOSUID)
917 const_iv (ST_NODEV)
918 const_iv (ST_NOEXEC)
919 const_iv (ST_SYNCHRONOUS)
920 const_iv (ST_MANDLOCK)
921 const_iv (ST_WRITE)
922 const_iv (ST_APPEND)
923 const_iv (ST_IMMUTABLE)
924 const_iv (ST_NOATIME)
925 const_iv (ST_NODIRATIME)
926 const_iv (ST_RELATIME)
927
928 const_iv (PROT_NONE)
929 const_iv (PROT_EXEC)
930 const_iv (PROT_READ)
931 const_iv (PROT_WRITE)
932
933 /*const_iv (MAP_FIXED)*/
934 const_iv (MAP_PRIVATE)
935 const_iv (MAP_SHARED)
936 const_iv (MAP_ANONYMOUS)
937
938 /* linuxish */
939 const_iv (MAP_HUGETLB)
940 const_iv (MAP_LOCKED)
941 const_iv (MAP_NORESERVE)
942 const_iv (MAP_POPULATE)
943 const_iv (MAP_NONBLOCK)
944
945 const_iv (FIEMAP_FLAG_SYNC)
946 const_iv (FIEMAP_FLAG_XATTR)
947 const_iv (FIEMAP_FLAGS_COMPAT)
948 const_iv (FIEMAP_EXTENT_LAST)
949 const_iv (FIEMAP_EXTENT_UNKNOWN)
950 const_iv (FIEMAP_EXTENT_DELALLOC)
951 const_iv (FIEMAP_EXTENT_ENCODED)
952 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
953 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
954 const_iv (FIEMAP_EXTENT_DATA_INLINE)
955 const_iv (FIEMAP_EXTENT_DATA_TAIL)
956 const_iv (FIEMAP_EXTENT_UNWRITTEN)
957 const_iv (FIEMAP_EXTENT_MERGED)
958 const_iv (FIEMAP_EXTENT_SHARED)
959
960 const_eio (SEEK_SET)
961 const_eio (SEEK_CUR)
962 const_eio (SEEK_END)
963
964 const_eio (MCL_FUTURE)
965 const_eio (MCL_CURRENT)
966
967 const_eio (MS_ASYNC)
968 const_eio (MS_INVALIDATE)
969 const_eio (MS_SYNC)
970
971 const_eio (MT_MODIFY)
972
973 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
974 const_eio (SYNC_FILE_RANGE_WRITE)
975 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
976
977 const_eio (FALLOC_FL_KEEP_SIZE)
978
979 const_eio (READDIR_DENTS)
980 const_eio (READDIR_DIRS_FIRST)
981 const_eio (READDIR_STAT_ORDER)
982 const_eio (READDIR_FOUND_UNKNOWN)
983
984 const_eio (DT_UNKNOWN)
985 const_eio (DT_FIFO)
986 const_eio (DT_CHR)
987 const_eio (DT_DIR)
988 const_eio (DT_BLK)
989 const_eio (DT_REG)
990 const_eio (DT_LNK)
991 const_eio (DT_SOCK)
992 const_eio (DT_WHT)
993 };
994
1270 HV *stash = gv_stashpv ("IO::AIO", 1); 995 aio_stash = gv_stashpv ("IO::AIO" , 1);
996 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
997 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
998 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1271 999
1272 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1000 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1273 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1001 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 1002
1280 create_pipe (); 1003 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282}
1283 1004
1005 reinit ();
1006}
1007
1284void 1008void
1009reinit ()
1010 PROTOTYPE:
1011
1012void
1285max_poll_reqs (int nreqs) 1013max_poll_reqs (unsigned int nreqs)
1286 PROTOTYPE: $ 1014 PROTOTYPE: $
1287 CODE: 1015 CODE:
1288 max_poll_reqs = nreqs; 1016 eio_set_max_poll_reqs (nreqs);
1289 1017
1290void 1018void
1291max_poll_time (double nseconds) 1019max_poll_time (double nseconds)
1292 PROTOTYPE: $ 1020 PROTOTYPE: $
1293 CODE: 1021 CODE:
1294 max_poll_time = nseconds * AIO_TICKS; 1022 eio_set_max_poll_time (nseconds);
1295 1023
1296void 1024void
1297min_parallel (int nthreads) 1025min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299
1300void
1301max_parallel (int nthreads)
1302 PROTOTYPE: $
1303
1304void
1305max_idle (int nthreads)
1306 PROTOTYPE: $ 1026 PROTOTYPE: $
1307 CODE: 1027 CODE:
1308 set_max_idle (nthreads); 1028 eio_set_min_parallel (nthreads);
1309 1029
1310int 1030void
1311max_outstanding (int maxreqs) 1031max_parallel (unsigned int nthreads)
1312 PROTOTYPE: $ 1032 PROTOTYPE: $
1313 CODE: 1033 CODE:
1314 RETVAL = max_outstanding; 1034 eio_set_max_parallel (nthreads);
1035
1036void
1037max_idle (unsigned int nthreads)
1038 PROTOTYPE: $
1039 CODE:
1040 eio_set_max_idle (nthreads);
1041
1042void
1043idle_timeout (unsigned int seconds)
1044 PROTOTYPE: $
1045 CODE:
1046 eio_set_idle_timeout (seconds);
1047
1048void
1049max_outstanding (unsigned int maxreqs)
1050 PROTOTYPE: $
1051 CODE:
1315 max_outstanding = maxreqs; 1052 max_outstanding = maxreqs;
1316 OUTPUT:
1317 RETVAL
1318 1053
1319void 1054void
1320aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1055aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1321 SV8 * pathname
1322 int flags
1323 int mode
1324 SV * callback
1325 PROTOTYPE: $$$;$
1326 PPCODE: 1056 PPCODE:
1327{ 1057{
1328 dREQ; 1058 dREQ;
1329 1059
1060 req->type = EIO_WD_OPEN;
1061 req_set_path1 (req, pathname);
1062
1063 REQ_SEND;
1064}
1065
1066void
1067aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1068 PPCODE:
1069{
1070 dREQ;
1071
1330 req->type = REQ_OPEN; 1072 req->type = EIO_OPEN;
1331 req->sv1 = newSVsv (pathname); 1073 req_set_path1 (req, pathname);
1332 req->ptr1 = SvPVbyte_nolen (req->sv1);
1333 req->int1 = flags; 1074 req->int1 = flags;
1334 req->mode = mode; 1075 req->int2 = mode;
1335 1076
1336 REQ_SEND; 1077 REQ_SEND;
1337} 1078}
1338 1079
1339void 1080void
1340aio_close (fh,callback=&PL_sv_undef) 1081aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341 SV * fh
1342 SV * callback
1343 PROTOTYPE: $;$
1344 ALIAS: 1082 ALIAS:
1345 aio_close = REQ_CLOSE
1346 aio_fsync = REQ_FSYNC 1083 aio_fsync = EIO_FSYNC
1347 aio_fdatasync = REQ_FDATASYNC 1084 aio_fdatasync = EIO_FDATASYNC
1085 aio_syncfs = EIO_SYNCFS
1348 PPCODE: 1086 PPCODE:
1349{ 1087{
1088 int fd = s_fileno_croak (fh, 0);
1350 dREQ; 1089 dREQ;
1351 1090
1352 req->type = ix; 1091 req->type = ix;
1353 req->fh = newSVsv (fh); 1092 req->sv1 = newSVsv (fh);
1354 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1093 req->int1 = fd;
1355 1094
1356 REQ_SEND (req); 1095 REQ_SEND;
1357} 1096}
1358 1097
1359void 1098void
1099aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1100 PPCODE:
1101{
1102 int fd = s_fileno_croak (fh, 0);
1103 dREQ;
1104
1105 req->type = EIO_SYNC_FILE_RANGE;
1106 req->sv1 = newSVsv (fh);
1107 req->int1 = fd;
1108 req->offs = offset;
1109 req->size = nbytes;
1110 req->int2 = flags;
1111
1112 REQ_SEND;
1113}
1114
1115void
1116aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1117 PPCODE:
1118{
1119 int fd = s_fileno_croak (fh, 0);
1120 dREQ;
1121
1122 req->type = EIO_FALLOCATE;
1123 req->sv1 = newSVsv (fh);
1124 req->int1 = fd;
1125 req->int2 = mode;
1126 req->offs = offset;
1127 req->size = len;
1128
1129 REQ_SEND;
1130}
1131
1132void
1133aio_close (SV *fh, SV *callback=&PL_sv_undef)
1134 PPCODE:
1135{
1136 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1137 int fd = s_fileno_croak (fh, 0);
1138 dREQ;
1139
1140 if (expect_false (close_fd < 0))
1141 {
1142 int pipefd [2];
1143
1144 if (
1145#ifdef _WIN32
1146 _pipe (pipefd, 1, _O_BINARY) < 0
1147#else
1148 pipe (pipefd) < 0
1149 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1150#endif
1151 || close (pipefd [1]) < 0
1152 )
1153 abort (); /*D*/
1154
1155 close_fd = pipefd [0];
1156 }
1157
1158 req->type = EIO_DUP2;
1159 req->int1 = close_fd;
1160 req->sv2 = newSVsv (fh);
1161 req->int2 = fd;
1162
1163 REQ_SEND;
1164}
1165
1166void
1167aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1168 PPCODE:
1169{
1170 int fd = s_fileno_croak (fh, 0);
1171 dREQ;
1172
1173 req->type = EIO_SEEK;
1174 req->sv1 = newSVsv (fh);
1175 req->int1 = fd;
1176 req->offs = SvVAL64 (offset);
1177 req->int2 = whence;
1178
1179 REQ_SEND;
1180}
1181
1182void
1360aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1183aio_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: 1184 ALIAS:
1368 aio_read = REQ_READ 1185 aio_read = EIO_READ
1369 aio_write = REQ_WRITE 1186 aio_write = EIO_WRITE
1370 PROTOTYPE: $$$$$;$
1371 PPCODE: 1187 PPCODE:
1372{ 1188{
1373 STRLEN svlen; 1189 STRLEN svlen;
1190 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374 char *svptr = SvPVbyte (data, svlen); 1191 char *svptr = SvPVbyte (data, svlen);
1375 1192 UV len = SvUV (length);
1376 SvUPGRADE (data, SVt_PV);
1377 SvPOK_on (data);
1378 1193
1379 if (dataoffset < 0) 1194 if (dataoffset < 0)
1380 dataoffset += svlen; 1195 dataoffset += svlen;
1381 1196
1382 if (dataoffset < 0 || dataoffset > svlen) 1197 if (dataoffset < 0 || dataoffset > svlen)
1383 croak ("data offset outside of string"); 1198 croak ("dataoffset outside of data scalar");
1384 1199
1385 if (ix == REQ_WRITE) 1200 if (ix == EIO_WRITE)
1386 { 1201 {
1387 /* write: check length and adjust. */ 1202 /* write: check length and adjust. */
1388 if (length < 0 || length + dataoffset > svlen) 1203 if (!SvOK (length) || len + dataoffset > svlen)
1389 length = svlen - dataoffset; 1204 len = svlen - dataoffset;
1390 } 1205 }
1391 else 1206 else
1392 { 1207 {
1393 /* read: grow scalar as necessary */ 1208 /* read: check type and grow scalar as necessary */
1209 SvUPGRADE (data, SVt_PV);
1394 svptr = SvGROW (data, length + dataoffset + 1); 1210 svptr = SvGROW (data, len + dataoffset + 1);
1395 } 1211 }
1396
1397 if (length < 0)
1398 croak ("length must not be negative");
1399 1212
1400 { 1213 {
1401 dREQ; 1214 dREQ;
1402 1215
1403 req->type = ix; 1216 req->type = ix;
1404 req->fh = newSVsv (fh); 1217 req->sv1 = newSVsv (fh);
1405 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1218 req->int1 = fd;
1406 : IoOFP (sv_2io (fh))); 1219 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407 req->offs = offset;
1408 req->size = length; 1220 req->size = len;
1409 req->sv1 = SvREFCNT_inc (data); 1221 req->sv2 = SvREFCNT_inc (data);
1410 req->ptr1 = (char *)svptr + dataoffset; 1222 req->ptr2 = (char *)svptr + dataoffset;
1411 req->stroffset = dataoffset; 1223 req->stroffset = dataoffset;
1412 1224
1413 if (!SvREADONLY (data)) 1225 if (!SvREADONLY (data))
1414 { 1226 {
1415 SvREADONLY_on (data); 1227 SvREADONLY_on (data);
1416 req->flags |= FLAG_SV1_RO_OFF; 1228 req->flags |= FLAG_SV2_RO_OFF;
1417 } 1229 }
1418 1230
1419 REQ_SEND; 1231 REQ_SEND;
1420 } 1232 }
1421} 1233}
1422 1234
1423void 1235void
1424aio_readlink (path,callback=&PL_sv_undef) 1236aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1425 SV8 * path 1237 ALIAS:
1426 SV * callback 1238 aio_readlink = EIO_READLINK
1427 PROTOTYPE: $$;$ 1239 aio_realpath = EIO_REALPATH
1428 PPCODE: 1240 PPCODE:
1429{ 1241{
1430 SV *data;
1431 dREQ; 1242 dREQ;
1432 1243
1433 data = newSV (NAME_MAX);
1434 SvPOK_on (data);
1435
1436 req->type = REQ_READLINK; 1244 req->type = ix;
1437 req->fh = newSVsv (path); 1245 req_set_path1 (req, pathname);
1438 req->ptr2 = SvPVbyte_nolen (req->fh);
1439 req->sv1 = data;
1440 req->ptr1 = SvPVbyte_nolen (data);
1441 1246
1442 REQ_SEND; 1247 REQ_SEND;
1443} 1248}
1444 1249
1445void 1250void
1446aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1251aio_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: $$$$;$
1453 PPCODE: 1252 PPCODE:
1454{ 1253{
1254 int ifd = s_fileno_croak (in_fh , 0);
1255 int ofd = s_fileno_croak (out_fh, 1);
1455 dREQ; 1256 dREQ;
1456 1257
1457 req->type = REQ_SENDFILE; 1258 req->type = EIO_SENDFILE;
1458 req->fh = newSVsv (out_fh); 1259 req->sv1 = newSVsv (out_fh);
1459 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1260 req->int1 = ofd;
1460 req->sv2 = newSVsv (in_fh); 1261 req->sv2 = newSVsv (in_fh);
1461 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1262 req->int2 = ifd;
1462 req->offs = in_offset; 1263 req->offs = in_offset;
1463 req->size = length; 1264 req->size = length;
1464 1265
1465 REQ_SEND; 1266 REQ_SEND;
1466} 1267}
1467 1268
1468void 1269void
1469aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1270aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470 SV * fh
1471 UV offset
1472 IV length
1473 SV * callback
1474 PROTOTYPE: $$$;$
1475 PPCODE: 1271 PPCODE:
1476{ 1272{
1273 int fd = s_fileno_croak (fh, 0);
1477 dREQ; 1274 dREQ;
1478 1275
1479 req->type = REQ_READAHEAD; 1276 req->type = EIO_READAHEAD;
1480 req->fh = newSVsv (fh); 1277 req->sv1 = newSVsv (fh);
1481 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1278 req->int1 = fd;
1482 req->offs = offset; 1279 req->offs = offset;
1483 req->size = length; 1280 req->size = length;
1484 1281
1485 REQ_SEND; 1282 REQ_SEND;
1486} 1283}
1487 1284
1488void 1285void
1489aio_stat (fh_or_path,callback=&PL_sv_undef) 1286aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490 SV8 * fh_or_path
1491 SV * callback
1492 ALIAS: 1287 ALIAS:
1493 aio_stat = REQ_STAT 1288 aio_stat = EIO_STAT
1494 aio_lstat = REQ_LSTAT 1289 aio_lstat = EIO_LSTAT
1290 aio_statvfs = EIO_STATVFS
1495 PPCODE: 1291 PPCODE:
1496{ 1292{
1497 dREQ; 1293 dREQ;
1498 1294
1499 req->ptr2 = malloc (sizeof (Stat_t)); 1295 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 1296
1521 REQ_SEND; 1297 REQ_SEND;
1522} 1298}
1523 1299
1300UV
1301major (UV dev)
1302 ALIAS:
1303 minor = 1
1304 CODE:
1305 RETVAL = ix ? major (dev) : minor (dev);
1306 OUTPUT:
1307 RETVAL
1308
1309UV
1310makedev (UV maj, UV min)
1311 CODE:
1312 RETVAL = makedev (maj, min);
1313 OUTPUT:
1314 RETVAL
1315
1524void 1316void
1317aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1318 PPCODE:
1319{
1320 dREQ;
1321
1322 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1323 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1324 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1325
1326 REQ_SEND;
1327}
1328
1329void
1330aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1331 PPCODE:
1332{
1333 dREQ;
1334
1335 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1336 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1337
1338 REQ_SEND;
1339}
1340
1341void
1342aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1343 PPCODE:
1344{
1345 dREQ;
1346
1347 req->int2 = mode;
1348 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1349
1350 REQ_SEND;
1351}
1352
1353void
1354aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1355 PPCODE:
1356{
1357 dREQ;
1358
1359 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1360 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1361 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1362
1363 REQ_SEND;
1364}
1365
1366void
1367aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1368 PPCODE:
1369{
1370 dREQ;
1371
1372 req->type = EIO_READDIR;
1373 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1374
1375 if (flags & EIO_READDIR_DENTS)
1376 req->int1 |= EIO_READDIR_CUSTOM2;
1377
1378 req_set_path1 (req, pathname);
1379
1380 REQ_SEND;
1381}
1382
1383void
1384aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 req->type = EIO_MKDIR;
1390 req->int2 = mode;
1391 req_set_path1 (req, pathname);
1392
1393 REQ_SEND;
1394}
1395
1396void
1525aio_unlink (pathname,callback=&PL_sv_undef) 1397aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526 SV8 * pathname
1527 SV * callback
1528 ALIAS: 1398 ALIAS:
1529 aio_unlink = REQ_UNLINK 1399 aio_unlink = EIO_UNLINK
1530 aio_rmdir = REQ_RMDIR 1400 aio_rmdir = EIO_RMDIR
1531 aio_readdir = REQ_READDIR 1401 aio_readdir = EIO_READDIR
1532 PPCODE: 1402 PPCODE:
1533{ 1403{
1534 dREQ; 1404 dREQ;
1535 1405
1536 req->type = ix; 1406 req->type = ix;
1537 req->sv1 = newSVsv (pathname); 1407 req_set_path1 (req, pathname);
1538 req->ptr1 = SvPVbyte_nolen (req->sv1);
1539 1408
1540 REQ_SEND; 1409 REQ_SEND;
1541} 1410}
1542 1411
1543void 1412void
1544aio_mkdir (pathname,mode,callback=&PL_sv_undef) 1413aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1545 SV8 * pathname 1414 ALIAS:
1546 UV mode 1415 aio_link = EIO_LINK
1547 SV * callback 1416 aio_symlink = EIO_SYMLINK
1417 aio_rename = EIO_RENAME
1548 PPCODE: 1418 PPCODE:
1549{ 1419{
1550 dREQ; 1420 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; 1421 dREQ;
1572 1422
1573 req->type = ix; 1423 req->type = ix;
1574 req->fh = newSVsv (oldpath); 1424 req_set_path1 (req, oldpath);
1575 req->ptr2 = SvPVbyte_nolen (req->fh); 1425 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1576 req->sv1 = newSVsv (newpath); 1426 req->int3 = (long)wd2;
1577 req->ptr1 = SvPVbyte_nolen (req->sv1);
1578 1427
1579 REQ_SEND; 1428 REQ_SEND;
1580} 1429}
1581 1430
1582void 1431void
1583aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1432aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1584 SV8 * pathname
1585 UV mode
1586 UV dev
1587 SV * callback
1588 PPCODE: 1433 PPCODE:
1589{ 1434{
1590 dREQ; 1435 dREQ;
1591 1436
1592 req->type = REQ_MKNOD; 1437 req->type = EIO_MKNOD;
1593 req->sv1 = newSVsv (pathname);
1594 req->ptr1 = SvPVbyte_nolen (req->sv1);
1595 req->mode = (mode_t)mode; 1438 req->int2 = (mode_t)mode;
1596 req->offs = dev; 1439 req->offs = dev;
1440 req_set_path1 (req, pathname);
1597 1441
1598 REQ_SEND; 1442 REQ_SEND;
1599} 1443}
1600 1444
1601void 1445void
1446aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1447 ALIAS:
1448 aio_mtouch = EIO_MTOUCH
1449 aio_msync = EIO_MSYNC
1450 PPCODE:
1451{
1452 STRLEN svlen;
1453 char *svptr = SvPVbyte (data, svlen);
1454 UV len = SvUV (length);
1455
1456 if (offset < 0)
1457 offset += svlen;
1458
1459 if (offset < 0 || offset > svlen)
1460 croak ("offset outside of scalar");
1461
1462 if (!SvOK (length) || len + offset > svlen)
1463 len = svlen - offset;
1464
1465 {
1466 dREQ;
1467
1468 req->type = ix;
1469 req->sv2 = SvREFCNT_inc (data);
1470 req->ptr2 = (char *)svptr + offset;
1471 req->size = len;
1472 req->int1 = flags;
1473
1474 REQ_SEND;
1475 }
1476}
1477
1478void
1479aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1480 PPCODE:
1481{
1482 STRLEN svlen;
1483 char *svptr = SvPVbyte (data, svlen);
1484 UV len = SvUV (length);
1485
1486 if (offset < 0)
1487 offset += svlen;
1488
1489 if (offset < 0 || offset > svlen)
1490 croak ("offset outside of scalar");
1491
1492 if (!SvOK (length) || len + offset > svlen)
1493 len = svlen - offset;
1494
1495 {
1496 dREQ;
1497
1498 req->type = EIO_MLOCK;
1499 req->sv2 = SvREFCNT_inc (data);
1500 req->ptr2 = (char *)svptr + offset;
1501 req->size = len;
1502
1503 REQ_SEND;
1504 }
1505}
1506
1507void
1508aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1509 PPCODE:
1510{
1511 dREQ;
1512
1513 req->type = EIO_MLOCKALL;
1514 req->int1 = flags;
1515
1516 REQ_SEND;
1517}
1518
1519void
1520aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1521 PPCODE:
1522{
1523 int fd = s_fileno_croak (fh, 0);
1524 dREQ;
1525
1526 req->type = EIO_CUSTOM;
1527 req->sv1 = newSVsv (fh);
1528 req->int1 = fd;
1529
1530 req->feed = fiemap;
1531#if HAVE_FIEMAP
1532 /* keep our fingers crossed that the next two types are 64 bit */
1533 req->offs = start;
1534 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1535 req->int2 = flags;
1536 req->int3 = SvOK (count) ? SvIV (count) : -1;
1537#endif
1538
1539 REQ_SEND;
1540}
1541
1542void
1602aio_busy (delay,callback=&PL_sv_undef) 1543aio_busy (double delay, SV *callback=&PL_sv_undef)
1603 double delay
1604 SV * callback
1605 PPCODE: 1544 PPCODE:
1606{ 1545{
1607 dREQ; 1546 dREQ;
1608 1547
1609 req->type = REQ_BUSY; 1548 req->type = EIO_BUSY;
1610 req->int1 = delay < 0. ? 0 : delay; 1549 req->nv1 = delay < 0. ? 0. : delay;
1611 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612 1550
1613 REQ_SEND; 1551 REQ_SEND;
1614} 1552}
1615 1553
1616void 1554void
1617aio_group (callback=&PL_sv_undef) 1555aio_group (SV *callback=&PL_sv_undef)
1618 SV * callback
1619 PROTOTYPE: ;$
1620 PPCODE: 1556 PPCODE:
1621{ 1557{
1622 dREQ; 1558 dREQ;
1623 1559
1624 req->type = REQ_GROUP; 1560 req->type = EIO_GROUP;
1625 1561
1626 req_send (req); 1562 req_submit (req);
1627 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1563 XPUSHs (req_sv (req, aio_grp_stash));
1628} 1564}
1629 1565
1630void 1566void
1631aio_nop (callback=&PL_sv_undef) 1567aio_nop (SV *callback=&PL_sv_undef)
1632 SV * callback 1568 ALIAS:
1569 aio_nop = EIO_NOP
1570 aio_sync = EIO_SYNC
1633 PPCODE: 1571 PPCODE:
1634{ 1572{
1635 dREQ; 1573 dREQ;
1636 1574
1637 req->type = REQ_NOP; 1575 req->type = ix;
1638 1576
1639 REQ_SEND; 1577 REQ_SEND;
1640} 1578}
1641 1579
1642int 1580int
1643aioreq_pri (int pri = 0) 1581aioreq_pri (int pri = 0)
1644 PROTOTYPE: ;$
1645 CODE: 1582 CODE:
1646 RETVAL = next_pri - PRI_BIAS; 1583 RETVAL = next_pri;
1647 if (items > 0) 1584 if (items > 0)
1648 { 1585 {
1649 if (pri < PRI_MIN) pri = PRI_MIN; 1586 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650 if (pri > PRI_MAX) pri = PRI_MAX; 1587 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651 next_pri = pri + PRI_BIAS; 1588 next_pri = pri;
1652 } 1589 }
1653 OUTPUT: 1590 OUTPUT:
1654 RETVAL 1591 RETVAL
1655 1592
1656void 1593void
1657aioreq_nice (int nice = 0) 1594aioreq_nice (int nice = 0)
1658 CODE: 1595 CODE:
1659 nice = next_pri - nice; 1596 nice = next_pri - nice;
1660 if (nice < PRI_MIN) nice = PRI_MIN; 1597 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661 if (nice > PRI_MAX) nice = PRI_MAX; 1598 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662 next_pri = nice + PRI_BIAS; 1599 next_pri = nice;
1663 1600
1664void 1601void
1665flush () 1602flush ()
1666 PROTOTYPE:
1667 CODE: 1603 CODE:
1668 while (nreqs) 1604 while (eio_nreqs ())
1669 { 1605 {
1670 poll_wait (); 1606 poll_wait ();
1671 poll_cb (); 1607 poll_cb ();
1672 } 1608 }
1673 1609
1674int 1610int
1675poll() 1611poll ()
1676 PROTOTYPE:
1677 CODE: 1612 CODE:
1678 poll_wait (); 1613 poll_wait ();
1679 RETVAL = poll_cb (); 1614 RETVAL = poll_cb ();
1680 OUTPUT: 1615 OUTPUT:
1681 RETVAL 1616 RETVAL
1682 1617
1683int 1618int
1684poll_fileno() 1619poll_fileno ()
1685 PROTOTYPE:
1686 CODE: 1620 CODE:
1687 RETVAL = respipe [0]; 1621 RETVAL = s_epipe_fd (&respipe);
1688 OUTPUT: 1622 OUTPUT:
1689 RETVAL 1623 RETVAL
1690 1624
1691int 1625int
1692poll_cb(...) 1626poll_cb (...)
1693 PROTOTYPE: 1627 PROTOTYPE:
1694 CODE: 1628 CODE:
1695 RETVAL = poll_cb (); 1629 RETVAL = poll_cb ();
1696 OUTPUT: 1630 OUTPUT:
1697 RETVAL 1631 RETVAL
1698 1632
1699void 1633void
1700poll_wait() 1634poll_wait ()
1701 PROTOTYPE:
1702 CODE: 1635 CODE:
1703 poll_wait (); 1636 poll_wait ();
1704 1637
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 1638int
1743nreqs() 1639nreqs ()
1744 PROTOTYPE:
1745 CODE: 1640 CODE:
1746 RETVAL = nreqs; 1641 RETVAL = eio_nreqs ();
1747 OUTPUT: 1642 OUTPUT:
1748 RETVAL 1643 RETVAL
1749 1644
1750int 1645int
1751nready() 1646nready ()
1752 PROTOTYPE:
1753 CODE: 1647 CODE:
1754 RETVAL = get_nready (); 1648 RETVAL = eio_nready ();
1755 OUTPUT: 1649 OUTPUT:
1756 RETVAL 1650 RETVAL
1757 1651
1758int 1652int
1759npending() 1653npending ()
1760 PROTOTYPE:
1761 CODE: 1654 CODE:
1762 RETVAL = get_npending (); 1655 RETVAL = eio_npending ();
1763 OUTPUT: 1656 OUTPUT:
1764 RETVAL 1657 RETVAL
1765 1658
1766int 1659int
1767nthreads() 1660nthreads ()
1768 PROTOTYPE:
1769 CODE: 1661 CODE:
1770 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1662 RETVAL = eio_nthreads ();
1771 RETVAL = started;
1772 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773 OUTPUT: 1663 OUTPUT:
1774 RETVAL 1664 RETVAL
1775 1665
1666int
1667fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1668 CODE:
1669 RETVAL = posix_fadvise (fh, offset, length, advice);
1670 OUTPUT:
1671 RETVAL
1672
1673IV
1674sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1675 CODE:
1676 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1677 OUTPUT:
1678 RETVAL
1679
1680void
1681mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1682 PPCODE:
1683 sv_unmagic (scalar, MMAP_MAGIC);
1684{
1685 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1686 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1687 if (addr == (void *)-1)
1688 XSRETURN_NO;
1689
1690 sv_force_normal (scalar);
1691
1692 /* we store the length in mg_obj, as namlen is I32 :/ */
1693 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1694 ->mg_obj = (SV *)length;
1695
1696 SvUPGRADE (scalar, SVt_PV); /* nop... */
1697
1698 if (!(prot & PROT_WRITE))
1699 SvREADONLY_on (scalar);
1700
1701 if (SvLEN (scalar))
1702 Safefree (SvPVX (scalar));
1703
1704 SvPVX (scalar) = (char *)addr;
1705 SvCUR_set (scalar, length);
1706 SvLEN_set (scalar, 0);
1707 SvPOK_only (scalar);
1708
1709 XSRETURN_YES;
1710}
1711
1712void
1713munmap (SV *scalar)
1714 CODE:
1715 sv_unmagic (scalar, MMAP_MAGIC);
1716
1717int
1718madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1719 ALIAS:
1720 mprotect = 1
1721 CODE:
1722{
1723 STRLEN svlen;
1724 void *addr = SvPVbyte (scalar, svlen);
1725 size_t len = SvUV (length);
1726
1727 if (offset < 0)
1728 offset += svlen;
1729
1730 if (offset < 0 || offset > svlen)
1731 croak ("offset outside of scalar");
1732
1733 if (!SvOK (length) || len + offset > svlen)
1734 len = svlen - offset;
1735
1736 addr = (void *)(((intptr_t)addr) + offset);
1737 eio_page_align (&addr, &len);
1738
1739 switch (ix)
1740 {
1741 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1742 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1743 }
1744}
1745 OUTPUT:
1746 RETVAL
1747
1748int
1749munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1750 CODE:
1751{
1752 STRLEN svlen;
1753 void *addr = SvPVbyte (scalar, svlen);
1754 size_t len = SvUV (length);
1755
1756 if (offset < 0)
1757 offset += svlen;
1758
1759 if (offset < 0 || offset > svlen)
1760 croak ("offset outside of scalar");
1761
1762 if (!SvOK (length) || len + offset > svlen)
1763 len = svlen - offset;
1764
1765 addr = (void *)(((intptr_t)addr) + offset);
1766 eio_page_align (&addr, &len);
1767#if _POSIX_MEMLOCK_RANGE
1768 RETVAL = munlock (addr, len);
1769#else
1770 RETVAL = ((errno = ENOSYS), -1);
1771#endif
1772}
1773 OUTPUT:
1774 RETVAL
1775
1776int
1777munlockall ()
1778 CODE:
1779#if _POSIX_MEMLOCK
1780 munlockall ();
1781#else
1782 RETVAL = -1;
1783 errno = ENOSYS;
1784#endif
1785 OUTPUT:
1786 RETVAL
1787
1788void _on_next_submit (SV *cb)
1789 CODE:
1790 SvREFCNT_dec (on_next_submit);
1791 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1792
1776PROTOTYPES: DISABLE 1793PROTOTYPES: DISABLE
1794
1795MODULE = IO::AIO PACKAGE = IO::AIO::WD
1796
1797BOOT:
1798{
1799 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1800 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1801}
1802
1803void
1804DESTROY (SV *self)
1805 CODE:
1806{
1807 aio_wd wd = SvAIO_WD (self);
1808#if HAVE_AT
1809 {
1810 SV *callback = &PL_sv_undef;
1811 dREQ; /* clobbers next_pri :/ */
1812 next_pri = req->pri; /* restore next_pri */
1813 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1814 req->type = EIO_WD_CLOSE;
1815 req->wd = wd;
1816 REQ_SEND;
1817 }
1818#else
1819 eio_wd_close_sync (wd);
1820#endif
1821}
1777 1822
1778MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1823MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779 1824
1780void 1825void
1781cancel (aio_req_ornot req) 1826cancel (aio_req_ornot req)
1782 CODE: 1827 CODE:
1783 req_cancel (req); 1828 eio_cancel (req);
1784 1829
1785void 1830void
1786cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1831cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787 CODE: 1832 PPCODE:
1833{
1834 if (GIMME_V != G_VOID)
1835 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1836
1837 if (items > 1)
1838 {
1839 SV *cb_cv =get_cb (callback);
1840
1788 SvREFCNT_dec (req->callback); 1841 SvREFCNT_dec (req->callback);
1789 req->callback = newSVsv (callback); 1842 req->callback = SvREFCNT_inc (cb_cv);
1843 }
1844}
1790 1845
1791MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1846MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792 1847
1793void 1848void
1794add (aio_req grp, ...) 1849add (aio_req grp, ...)
1795 PPCODE: 1850 PPCODE:
1796{ 1851{
1797 int i; 1852 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 1853
1803 if (grp->int1 == 2) 1854 if (grp->int1 == 2)
1804 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1855 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805 1856
1806 for (i = 1; i < items; ++i ) 1857 for (i = 1; i < items; ++i )
1807 { 1858 {
1859 aio_req req;
1860
1808 if (GIMME_V != G_VOID) 1861 if (GIMME_V != G_VOID)
1809 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1862 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810 1863
1811 req = SvAIO_REQ (ST (i)); 1864 req = SvAIO_REQ (ST (i));
1812 1865
1813 if (req) 1866 if (req)
1814 { 1867 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 } 1868 }
1827} 1869}
1828 1870
1829void 1871void
1830cancel_subs (aio_req_ornot req) 1872cancel_subs (aio_req_ornot req)
… …
1839 AV *av; 1881 AV *av;
1840 1882
1841 grp->errorno = errno; 1883 grp->errorno = errno;
1842 1884
1843 av = newAV (); 1885 av = newAV ();
1886 av_extend (av, items - 1);
1844 1887
1845 for (i = 1; i < items; ++i ) 1888 for (i = 1; i < items; ++i )
1846 av_push (av, newSVsv (ST (i))); 1889 av_push (av, newSVsv (ST (i)));
1847 1890
1848 SvREFCNT_dec (grp->sv1); 1891 SvREFCNT_dec (grp->sv1);
… …
1855 grp->errorno = errorno; 1898 grp->errorno = errorno;
1856 1899
1857void 1900void
1858limit (aio_req grp, int limit) 1901limit (aio_req grp, int limit)
1859 CODE: 1902 CODE:
1860 grp->int2 = limit; 1903 eio_grp_limit (grp, limit);
1861 aio_grp_feed (grp);
1862 1904
1863void 1905void
1864feed (aio_req grp, SV *callback=&PL_sv_undef) 1906feed (aio_req grp, SV *callback=&PL_sv_undef)
1865 CODE: 1907 CODE:
1866{ 1908{
1867 SvREFCNT_dec (grp->sv2); 1909 SvREFCNT_dec (grp->sv2);
1868 grp->sv2 = newSVsv (callback); 1910 grp->sv2 = newSVsv (callback);
1911 grp->feed = aio_grp_feed;
1869 1912
1870 if (grp->int2 <= 0) 1913 if (grp->int2 <= 0)
1871 grp->int2 = 2; 1914 grp->int2 = 2;
1872 1915
1873 aio_grp_feed (grp); 1916 eio_grp_limit (grp, grp->int2);
1874} 1917}
1875 1918

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