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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 1.218 by root, Fri Jul 27 17:54:40 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/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
30# endif
31#endif
32
33/* perl namespace pollution */
34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
42#ifdef _WIN32
43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
79#else
80
81 #include <sys/time.h>
26# include <sys/sendfile.h> 82 #include <sys/select.h>
27# elif __freebsd 83 #include <unistd.h>
28# include <sys/socket.h> 84 #include <utime.h>
29# include <sys/uio.h> 85 #include <signal.h>
30# elif __hpux 86
31# include <sys/socket.h> 87 #define EIO_STRUCT_STAT Stat_t
32# elif __solaris /* not yet */ 88
33# include <sys/sendfile.h> 89#endif
90
91/*****************************************************************************/
92
93#if __GNUC__ >= 3
94# define expect(expr,value) __builtin_expect ((expr),(value))
95#else
96# define expect(expr,value) (expr)
97#endif
98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 SV *sv3, *sv4; \
114 STRLEN stroffset; \
115 SV *self;
116
117#define EIO_NO_WRAPPERS 1
118
119#include "libeio/config.h"
120#include "libeio/eio.h"
121
122static int req_invoke (eio_req *req);
123#define EIO_FINISH(req) req_invoke (req)
124static void req_destroy (eio_req *grp);
125#define EIO_DESTROY(req) req_destroy (req)
126
127#include "libeio/eio.c"
128
129#if !HAVE_POSIX_FADVISE
130# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
131#endif
132
133#if !HAVE_POSIX_MADVISE
134# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#ifndef MAP_ANONYMOUS
138# ifdef MAP_ANON
139# define MAP_ANONYMOUS MAP_ANON
34# else 140# else
35# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36# endif 142# endif
37#endif 143#endif
38 144
39/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
40#define IDLE_TIMEOUT 10 146#include "def0.h"
41 147
42/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
43#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
44# define NAME_MAX 4096
45#endif 150#endif
151#ifndef major
152# define major(dev) ((dev) >> 8)
153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
46 157
47/* buffer size for various temporary buffers */ 158#ifndef PAGESIZE
48#define AIO_BUFSIZE 65536 159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
49 161
50#define dBUF \ 162/*****************************************************************************/
51 char *aio_buf; \ 163
52 LOCK (wrklock); \ 164static void
53 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 165fiemap (eio_req *req)
54 UNLOCK (wrklock); \ 166{
55 if (!aio_buf) \ 167 req->result = -1;
168
169#if HAVE_FIEMAP
170 int count = req->int3;
171
172 /* heuristic: first try with 72 extents if we don't know how many, */
173 /* as most files have (hopefully) fewer than this many extents */
174 /* in fact, most should have <= 2, so the 72 below is probably overkill */
175 if (count < 0)
176 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
177
178 for (;;)
179 {
180 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
181 errno = ENOMEM;
182 if (!fiemap)
56 return -1; 183 return;
57 184
58typedef SV SV8; /* byte-sv, used for argument-checking */ 185 req->ptr1 = fiemap;
186 req->flags |= EIO_FLAG_PTR1_FREE;
187
188 fiemap->fm_start = req->offs;
189 fiemap->fm_length = req->size;
190 fiemap->fm_flags = req->int2;
191 fiemap->fm_extent_count = count;
192
193 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
194 return;
195
196 if (req->int3 >= 0)
197 break; /* when not autosizing we are done */
198
199 if (!fiemap->fm_mapped_extents)
200 break; /* if file has no segments, we are done */
201
202 if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
203 break; /* autosizing successful, we are done */
204
205 fiemap->fm_flags = req->int2;
206 fiemap->fm_extent_count = 0;
207
208 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
209 return;
210
211 count = fiemap->fm_mapped_extents;
212
213 free (fiemap);
214 }
215
216 req->result = 0;
217
218#else
219 errno = ENOSYS;
220#endif
221}
222
223/*****************************************************************************/
59 224
60enum { 225enum {
61 REQ_QUIT, 226 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}; 227};
73 228
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; 229typedef eio_req *aio_req;
108typedef aio_cb *aio_req_ornot; 230typedef eio_req *aio_req_ornot;
231typedef eio_wd aio_wd;
109 232
110enum { 233static SV *on_next_submit;
111 PRI_MIN = -4, 234static int next_pri = EIO_PRI_DEFAULT;
112 PRI_MAX = 4, 235static int max_outstanding;
113 236
114 DEFAULT_PRI = 0, 237static s_epipe respipe;
115 PRI_BIAS = -PRI_MIN,
116 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117};
118 238
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); 239static void req_destroy (aio_req req);
318static void req_cancel (aio_req req); 240static void req_cancel (aio_req req);
319 241
242static void
243want_poll (void)
244{
245 /* write a dummy byte to the pipe so fh becomes ready */
246 s_epipe_signal (&respipe);
247}
248
249static void
250done_poll (void)
251{
252 /* read any signals sent by the worker threads */
253 s_epipe_drain (&respipe);
254}
255
320/* must be called at most once */ 256/* must be called at most once */
321static SV *req_sv (aio_req req, const char *klass) 257static SV *
258req_sv (aio_req req, HV *stash)
322{ 259{
323 if (!req->self) 260 if (!req->self)
324 { 261 {
325 req->self = (SV *)newHV (); 262 req->self = (SV *)newHV ();
326 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 263 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327 } 264 }
328 265
329 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 266 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330} 267}
331 268
332static aio_req SvAIO_REQ (SV *sv) 269static SV *
270newSVaio_wd (aio_wd wd)
271{
272 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
273}
274
275static aio_req
276SvAIO_REQ (SV *sv)
333{ 277{
334 MAGIC *mg; 278 MAGIC *mg;
335 279
336 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 280 if (!SvROK (sv)
281 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
282 || (SvSTASH (SvRV (sv)) != aio_grp_stash
283 && SvSTASH (SvRV (sv)) != aio_req_stash
284 && !sv_derived_from (sv, "IO::AIO::REQ")))
337 croak ("object of class " AIO_REQ_KLASS " expected"); 285 croak ("object of class IO::AIO::REQ expected");
338 286
339 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 287 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340 288
341 return mg ? (aio_req)mg->mg_ptr : 0; 289 return mg ? (aio_req)mg->mg_ptr : 0;
342} 290}
343 291
292static aio_wd
293SvAIO_WD (SV *sv)
294{
295 if (!SvROK (sv)
296 || SvTYPE (SvRV (sv)) != SVt_PVMG
297 || SvSTASH (SvRV (sv)) != aio_wd_stash)
298 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
299
300 return (aio_wd)(long)SvIVX (SvRV (sv));
301}
302
303static void
344static void aio_grp_feed (aio_req grp) 304aio_grp_feed (aio_req grp)
345{ 305{
346 block_sig (); 306 if (grp->sv2 && SvOK (grp->sv2))
347
348 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349 { 307 {
350 int old_len = grp->size;
351
352 if (grp->sv2 && SvOK (grp->sv2))
353 {
354 dSP; 308 dSP;
355 309
356 ENTER; 310 ENTER;
357 SAVETMPS; 311 SAVETMPS;
358 PUSHMARK (SP); 312 PUSHMARK (SP);
359 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 313 XPUSHs (req_sv (grp, aio_grp_stash));
360 PUTBACK; 314 PUTBACK;
361 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 315 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362 SPAGAIN; 316 SPAGAIN;
363 FREETMPS; 317 FREETMPS;
364 LEAVE; 318 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 } 319 }
375
376 unblock_sig ();
377} 320}
378 321
379static void aio_grp_dec (aio_req grp) 322static void
323req_submit (eio_req *req)
380{ 324{
381 --grp->size; 325 eio_submit (req);
382 326
383 /* call feeder, if applicable */ 327 if (expect_false (on_next_submit))
384 aio_grp_feed (grp);
385
386 /* finish, if done */
387 if (!grp->size && grp->int1)
388 { 328 {
389 block_sig (); 329 dSP;
330 SV *cb = sv_2mortal (on_next_submit);
390 331
391 if (!req_invoke (grp)) 332 on_next_submit = 0;
392 {
393 req_free (grp);
394 unblock_sig ();
395 croak (0);
396 }
397 333
398 req_free (grp); 334 PUSHMARK (SP);
399 unblock_sig (); 335 PUTBACK;
336 call_sv (cb, G_DISCARD | G_EVAL);
400 } 337 }
401} 338}
402 339
340static int
403static int req_invoke (aio_req req) 341req_invoke (eio_req *req)
404{ 342{
405 dSP;
406
407 if (req->flags & FLAG_SV1_RO_OFF) 343 if (req->flags & FLAG_SV2_RO_OFF)
408 SvREADONLY_off (req->sv1); 344 SvREADONLY_off (req->sv2);
409 345
410 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 346 if (!EIO_CANCELLED (req) && req->callback)
411 { 347 {
348 dSP;
349 static SV *sv_result_cache; /* caches the result integer SV */
350 SV *sv_result;
351
412 ENTER; 352 ENTER;
413 SAVETMPS; 353 SAVETMPS;
414 PUSHMARK (SP); 354 PUSHMARK (SP);
415 EXTEND (SP, 1); 355 EXTEND (SP, 1);
416 356
357 /* do not recreate the result IV from scratch each time */
358 if (expect_true (sv_result_cache))
359 {
360 sv_result = sv_result_cache; sv_result_cache = 0;
361 SvIV_set (sv_result, req->result);
362 SvIOK_only (sv_result);
363 }
364 else
365 {
366 sv_result = newSViv (req->result);
367 SvREADONLY_on (sv_result);
368 }
369
417 switch (req->type) 370 switch (req->type)
418 { 371 {
372 case EIO_WD_OPEN:
373 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
374 break;
375
419 case REQ_READDIR: 376 case EIO_READDIR:
420 { 377 {
421 SV *rv = &PL_sv_undef; 378 SV *rv = &PL_sv_undef;
422 379
423 if (req->result >= 0) 380 if (req->result >= 0)
424 { 381 {
425 int i; 382 int i;
426 char *buf = req->ptr2; 383 char *names = (char *)req->ptr2;
384 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427 AV *av = newAV (); 385 AV *av = newAV ();
428 386
429 av_extend (av, req->result - 1); 387 av_extend (av, req->result - 1);
430 388
431 for (i = 0; i < req->result; ++i) 389 for (i = 0; i < req->result; ++i)
432 { 390 {
433 SV *sv = newSVpv (buf, 0); 391 if (req->int1 & EIO_READDIR_DENTS)
392 {
393 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434 394
395 if (req->int1 & EIO_READDIR_CUSTOM2)
396 {
397 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
398 AV *avent = newAV ();
399
400 av_extend (avent, 2);
401
402 if (!sv_type [ent->type])
403 {
404 sv_type [ent->type] = newSViv (ent->type);
405 SvREADONLY_on (sv_type [ent->type]);
406 }
407
408 av_store (avent, 0, namesv);
409 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
410 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
411
412 av_store (av, i, newRV_noinc ((SV *)avent));
413 }
414 else
435 av_store (av, i, sv); 415 av_store (av, i, namesv);
416
417 ++ent;
418 }
419 else
420 {
421 SV *name = newSVpv (names, 0);
422 av_store (av, i, name);
436 buf += SvCUR (sv) + 1; 423 names += SvCUR (name) + 1;
424 }
437 } 425 }
438 426
439 rv = sv_2mortal (newRV_noinc ((SV *)av)); 427 rv = sv_2mortal (newRV_noinc ((SV *)av));
440 } 428 }
441 429
442 PUSHs (rv); 430 PUSHs (rv);
431
432 if (req->int1 & EIO_READDIR_CUSTOM1)
433 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443 } 434 }
444 break; 435 break;
445 436
446 case REQ_OPEN: 437 case EIO_OPEN:
447 { 438 {
448 /* convert fd to fh */ 439 /* convert fd to fh */
449 SV *fh; 440 SV *fh = &PL_sv_undef;
450 441
451 PUSHs (sv_2mortal (newSViv (req->result))); 442 if (req->result >= 0)
452 PUTBACK; 443 {
453 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 444 GV *gv = (GV *)sv_newmortal ();
454 SPAGAIN; 445 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
446 char sym [64];
447 int symlen;
448
449 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
450 gv_init (gv, aio_stash, sym, symlen, 0);
455 451
456 fh = POPs; 452 symlen = snprintf (
457 PUSHMARK (SP); 453 sym,
454 sizeof (sym),
455 "%s&=%d",
456 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
457 (int)req->result
458 );
459
460 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
461 fh = (SV *)gv;
462 }
463
458 XPUSHs (fh); 464 PUSHs (fh);
459 } 465 }
460 break; 466 break;
461 467
468 case EIO_STATVFS:
469 case EIO_FSTATVFS:
470 {
471 SV *rv = &PL_sv_undef;
472
473#ifndef _WIN32
474 if (req->result >= 0)
475 {
476 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
477 HV *hv = newHV ();
478
479 rv = sv_2mortal (newRV_noinc ((SV *)hv));
480
481 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
482 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
483 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
484 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
485 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
486 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
487 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
488 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
489 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
490 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
491 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
492 }
493#endif
494
495 PUSHs (rv);
496 }
497
498 break;
499
462 case REQ_GROUP: 500 case EIO_GROUP:
463 req->int1 = 2; /* mark group as finished */ 501 req->int1 = 2; /* mark group as finished */
464 502
465 if (req->sv1) 503 if (req->sv1)
466 { 504 {
467 int i; 505 int i;
… …
471 for (i = 0; i <= AvFILL (av); ++i) 509 for (i = 0; i <= AvFILL (av); ++i)
472 PUSHs (*av_fetch (av, i, 0)); 510 PUSHs (*av_fetch (av, i, 0));
473 } 511 }
474 break; 512 break;
475 513
476 case REQ_NOP: 514 case EIO_NOP:
477 case REQ_BUSY: 515 case EIO_BUSY:
478 break; 516 break;
479 517
480 case REQ_READLINK: 518 case EIO_READLINK:
519 case EIO_REALPATH:
481 if (req->result > 0) 520 if (req->result > 0)
521 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
522 break;
523
524 case EIO_STAT:
525 case EIO_LSTAT:
526 case EIO_FSTAT:
527 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
528
529 if (!(PL_laststatval = req->result))
530 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
531 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
532
533 PUSHs (sv_result);
534 break;
535
536 case EIO_SEEK:
537 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
538 break;
539
540 case EIO_READ:
541 {
542 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
543 *SvEND (req->sv2) = 0;
544 SvPOK_only (req->sv2);
545 SvSETMAGIC (req->sv2);
546 PUSHs (sv_result);
547 }
548 break;
549
550 case EIO_CUSTOM:
551 if (req->feed == fiemap)
482 { 552 {
483 SvCUR_set (req->sv1, req->result); 553#if HAVE_FIEMAP
484 *SvEND (req->sv1) = 0;
485 PUSHs (req->sv1); 554 if (!req->result)
555 {
556 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
557
558 if (fiemap->fm_extent_count)
559 {
560 AV *av = newAV ();
561 int i;
562
563 while (fiemap->fm_mapped_extents)
564 {
565 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
566 AV *ext_av = newAV ();
567
568 av_store (ext_av, 3, newSVuv (extent->fe_flags));
569 av_store (ext_av, 2, newSVval64 (extent->fe_length));
570 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
571 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
572
573 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
574 }
575
576 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
577 }
578 else
579 {
580 SvIV_set (sv_result, fiemap->fm_mapped_extents);
581 PUSHs (sv_result);
582 }
583 }
584#endif
486 } 585 }
586 else
587 PUSHs (sv_result);
487 break; 588 break;
488 589
489 case REQ_STAT: 590 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
490 case REQ_LSTAT: 591 if (req->result > 0)
491 case REQ_FSTAT: 592 SvIV_set (sv_result, 0);
492 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 593 /* 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;
503 594
504 default: 595 default:
505 PUSHs (sv_2mortal (newSViv (req->result))); 596 PUSHs (sv_result);
506 break; 597 break;
507 } 598 }
508 599
509 errno = req->errorno; 600 errno = req->errorno;
510 601
511 PUTBACK; 602 PUTBACK;
512 call_sv (req->callback, G_VOID | G_EVAL); 603 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513 SPAGAIN; 604 SPAGAIN;
605
606 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
607 SvREFCNT_dec (sv_result);
608 else
609 sv_result_cache = sv_result;
514 610
515 FREETMPS; 611 FREETMPS;
516 LEAVE; 612 LEAVE;
613
614 PUTBACK;
517 } 615 }
518 616
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); 617 return !!SvTRUE (ERRSV);
534} 618}
535 619
536static void req_free (aio_req req) 620static void
621req_destroy (aio_req req)
537{ 622{
538 if (req->self) 623 if (req->self)
539 { 624 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 625 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 626 SvREFCNT_dec (req->self);
542 } 627 }
543 628
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 629 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 630 SvREFCNT_dec (req->sv2);
631 SvREFCNT_dec (req->sv3);
632 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 633 SvREFCNT_dec (req->callback);
548 634
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 635 free (req);
553} 636}
554 637
638static void
555static void req_cancel_subs (aio_req grp) 639req_cancel_subs (aio_req grp)
556{ 640{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 641 if (grp->type != EIO_GROUP)
560 return; 642 return;
561 643
562 SvREFCNT_dec (grp->sv2); 644 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 645 grp->sv2 = 0;
564 646
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 647 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 648}
568 649
569static void req_cancel (aio_req req) 650static void ecb_cold
651create_respipe (void)
570{ 652{
571 req->flags |= FLAG_CANCELLED; 653 if (s_epipe_renew (&respipe))
572 654 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 655}
575 656
576static void *aio_proc(void *arg); 657static void
577 658poll_wait (void)
578static void start_thread (void)
579{ 659{
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) 660 while (eio_nreqs ())
676 { 661 {
677 int size; 662 int size;
678 if (WORDACCESS_UNSAFE) LOCK (reslock); 663
664 X_LOCK (reslock);
679 size = res_queue.size; 665 size = res_queue.size;
680 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 666 X_UNLOCK (reslock);
681 667
682 if (size) 668 if (size)
683 return; 669 return;
684 670
685 maybe_start_thread (); 671 etp_maybe_start_thread ();
686 672
687 FD_ZERO(&rfd); 673 s_epipe_wait (&respipe);
688 FD_SET(respipe [0], &rfd);
689
690 select (respipe [0] + 1, &rfd, 0, 0, 0);
691 } 674 }
692} 675}
693 676
694static int poll_cb () 677static int
678poll_cb (void)
695{ 679{
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 (;;) 680 for (;;)
709 { 681 {
710 for (;;) 682 int res = eio_poll ();
683
684 if (res > 0)
685 croak (0);
686
687 if (!max_outstanding || max_outstanding > eio_nreqs ())
688 return res;
689
690 poll_wait ();
691 }
692}
693
694static void ecb_cold
695reinit (void)
696{
697 create_respipe ();
698
699 if (eio_init (want_poll, done_poll) < 0)
700 croak ("IO::AIO: unable to initialise eio library");
701}
702
703/*****************************************************************************/
704
705#if !_POSIX_MAPPED_FILES
706# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
707# define munmap(addr,length) EIO_ENOSYS ()
708#endif
709
710#if !_POSIX_MEMORY_PROTECTION
711# define mprotect(addr,len,prot) EIO_ENOSYS ()
712# define PROT_NONE 0
713# define PROT_WRITE 0
714# define MAP_PRIVATE 0
715# define MAP_SHARED 0
716# define MAP_FIXED 0
717#endif
718
719#define MMAP_MAGIC PERL_MAGIC_ext
720
721static int ecb_cold
722mmap_free (pTHX_ SV *sv, MAGIC *mg)
723{
724 int old_errno = errno;
725 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
726 errno = old_errno;
727
728 mg->mg_obj = 0; /* just in case */
729
730 SvREADONLY_off (sv);
731
732 if (SvPVX (sv) != mg->mg_ptr)
733 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
734
735 SvCUR_set (sv, 0);
736 SvPVX (sv) = 0;
737 SvOK_off (sv);
738
739 return 0;
740}
741
742static MGVTBL mmap_vtbl = {
743 0, 0, 0, 0, mmap_free
744};
745
746/*****************************************************************************/
747
748static SV *
749get_cb (SV *cb_sv)
750{
751 SvGETMAGIC (cb_sv);
752 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
753}
754
755static aio_req ecb_noinline
756dreq (SV *callback)
757{
758 SV *cb_cv;
759 aio_req req;
760 int req_pri = next_pri;
761 next_pri = EIO_PRI_DEFAULT;
762
763 cb_cv = get_cb (callback);
764
765 req = calloc (sizeof (*req), 1);
766 if (!req)
767 croak ("out of memory during eio_req allocation");
768
769 req->callback = SvREFCNT_inc (cb_cv);
770 req->pri = req_pri;
771
772 return req;
773}
774
775#define dREQ \
776 aio_req req = dreq (callback); \
777
778#define REQ_SEND \
779 PUTBACK; \
780 req_submit (req); \
781 SPAGAIN; \
782 \
783 if (GIMME_V != G_VOID) \
784 XPUSHs (req_sv (req, aio_req_stash));
785
786ecb_inline void
787req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
788{
789 if (expect_false (SvROK (path)))
790 {
791 SV *rv = SvRV (path);
792 SV *wdob;
793
794 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
711 { 795 {
712 maybe_start_thread (); 796 path = AvARRAY (rv)[1];
797 wdob = AvARRAY (rv)[0];
713 798
714 LOCK (reslock); 799 if (SvOK (wdob))
715 req = reqq_shift (&res_queue);
716
717 if (req)
718 { 800 {
719 --npending; 801 *wd = SvAIO_WD (wdob);
720 802 *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 } 803 }
742 else 804 else
743 { 805 *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 } 806 }
807 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
808 {
809 *wd = (aio_wd)(long)SvIVX (rv);
810 *wdsv = SvREFCNT_inc_NN (rv);
811 *ptr = ".";
812 return; /* path set to "." */
813 }
814 else
815 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
816 }
767 817
768 if (nreqs <= max_outstanding) 818 *pathsv = newSVsv (path);
819 *ptr = SvPVbyte_nolen (*pathsv);
820}
821
822static void ecb_noinline
823req_set_path1 (aio_req req, SV *path)
824{
825 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
826}
827
828static void ecb_noinline
829req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
830{
831 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
832
833 switch (SvTYPE (rv))
834 {
835 case SVt_PVIO:
836 case SVt_PVLV:
837 case SVt_PVGV:
838 req->type = type_fh;
839 req->sv1 = newSVsv (fh_or_path);
840 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
769 break; 841 break;
770 842
771 poll_wait (); 843 default:
772 844 req->type = type_path;
773 ++maxreqs; 845 req_set_path1 (req, fh_or_path);
846 break;
774 } 847 }
775
776 unblock_sig ();
777 return count;
778} 848}
779 849
780static void create_pipe () 850XS(boot_IO__AIO) ecb_cold;
781{
782 if (pipe (respipe))
783 croak ("unable to initialize result pipe");
784 851
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 852MODULE = IO::AIO PACKAGE = IO::AIO
1265 853
1266PROTOTYPES: ENABLE 854PROTOTYPES: ENABLE
1267 855
1268BOOT: 856BOOT:
1269{ 857{
858 static const struct {
859 const char *name;
860 IV iv;
861 } *civ, const_iv[] = {
862# define const_niv(name, value) { # name, (IV) value },
863# define const_iv(name) { # name, (IV) name },
864# define const_eio(name) { # name, (IV) EIO_ ## name },
865
866 /* you have to re-run ./gendef0 after adding/Removing any constants here */
867
868 const_iv (ENOSYS)
869 const_iv (EXDEV)
870 const_iv (EBADR)
871
872 const_iv (O_RDONLY)
873 const_iv (O_WRONLY)
874 const_iv (O_RDWR)
875 const_iv (O_CREAT)
876 const_iv (O_TRUNC)
877 const_iv (O_EXCL)
878 const_iv (O_APPEND)
879
880 const_iv (O_ASYNC)
881 const_iv (O_DIRECT)
882 const_iv (O_NOATIME)
883
884 const_iv (O_CLOEXEC)
885 const_iv (O_NOCTTY)
886 const_iv (O_NOFOLLOW)
887 const_iv (O_NONBLOCK)
888 const_iv (O_EXEC)
889 const_iv (O_SEARCH)
890 const_iv (O_DIRECTORY)
891 const_iv (O_DSYNC)
892 const_iv (O_RSYNC)
893 const_iv (O_SYNC)
894 const_iv (O_TTY_INIT)
895
896 const_iv (S_IFIFO)
897 const_iv (S_IFCHR)
898 const_iv (S_IFBLK)
899 const_iv (S_IFLNK)
900 const_iv (S_IFREG)
901 const_iv (S_IFDIR)
902 const_iv (S_IFWHT)
903 const_iv (S_IFSOCK)
904 const_iv (S_IFMT)
905
906 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
907 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
908 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
909 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
910 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
911 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
912
913 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
914 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
915 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
916 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
917 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
918
919 const_iv (ST_RDONLY)
920 const_iv (ST_NOSUID)
921 const_iv (ST_NODEV)
922 const_iv (ST_NOEXEC)
923 const_iv (ST_SYNCHRONOUS)
924 const_iv (ST_MANDLOCK)
925 const_iv (ST_WRITE)
926 const_iv (ST_APPEND)
927 const_iv (ST_IMMUTABLE)
928 const_iv (ST_NOATIME)
929 const_iv (ST_NODIRATIME)
930 const_iv (ST_RELATIME)
931
932 const_iv (PROT_NONE)
933 const_iv (PROT_EXEC)
934 const_iv (PROT_READ)
935 const_iv (PROT_WRITE)
936
937 /*const_iv (MAP_FIXED)*/
938 const_iv (MAP_PRIVATE)
939 const_iv (MAP_SHARED)
940 const_iv (MAP_ANONYMOUS)
941
942 /* linuxish */
943 const_iv (MAP_HUGETLB)
944 const_iv (MAP_LOCKED)
945 const_iv (MAP_NORESERVE)
946 const_iv (MAP_POPULATE)
947 const_iv (MAP_NONBLOCK)
948
949 const_iv (FIEMAP_FLAG_SYNC)
950 const_iv (FIEMAP_FLAG_XATTR)
951 const_iv (FIEMAP_FLAGS_COMPAT)
952 const_iv (FIEMAP_EXTENT_LAST)
953 const_iv (FIEMAP_EXTENT_UNKNOWN)
954 const_iv (FIEMAP_EXTENT_DELALLOC)
955 const_iv (FIEMAP_EXTENT_ENCODED)
956 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
957 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
958 const_iv (FIEMAP_EXTENT_DATA_INLINE)
959 const_iv (FIEMAP_EXTENT_DATA_TAIL)
960 const_iv (FIEMAP_EXTENT_UNWRITTEN)
961 const_iv (FIEMAP_EXTENT_MERGED)
962 const_iv (FIEMAP_EXTENT_SHARED)
963
964 const_iv (SPLICE_F_MOVE)
965 const_iv (SPLICE_F_NONBLOCK)
966 const_iv (SPLICE_F_MORE)
967 const_iv (SPLICE_F_GIFT)
968
969 const_iv (SEEK_DATA)
970 const_iv (SEEK_HOLE)
971
972 /* libeio constants */
973 const_eio (SEEK_SET)
974 const_eio (SEEK_CUR)
975 const_eio (SEEK_END)
976
977 const_eio (MCL_FUTURE)
978 const_eio (MCL_CURRENT)
979
980 const_eio (MS_ASYNC)
981 const_eio (MS_INVALIDATE)
982 const_eio (MS_SYNC)
983
984 const_eio (MT_MODIFY)
985
986 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
987 const_eio (SYNC_FILE_RANGE_WRITE)
988 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
989
990 const_eio (FALLOC_FL_KEEP_SIZE)
991 const_eio (FALLOC_FL_PUNCH_HOLE)
992
993 const_eio (READDIR_DENTS)
994 const_eio (READDIR_DIRS_FIRST)
995 const_eio (READDIR_STAT_ORDER)
996 const_eio (READDIR_FOUND_UNKNOWN)
997
998 const_eio (DT_UNKNOWN)
999 const_eio (DT_FIFO)
1000 const_eio (DT_CHR)
1001 const_eio (DT_DIR)
1002 const_eio (DT_BLK)
1003 const_eio (DT_REG)
1004 const_eio (DT_LNK)
1005 const_eio (DT_SOCK)
1006 const_eio (DT_WHT)
1007 };
1008
1270 HV *stash = gv_stashpv ("IO::AIO", 1); 1009 aio_stash = gv_stashpv ("IO::AIO" , 1);
1010 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1011 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1012 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1271 1013
1272 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1014 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1273 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1015 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 1016
1280 create_pipe (); 1017 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282}
1283 1018
1019 reinit ();
1020}
1021
1284void 1022void
1023reinit ()
1024 PROTOTYPE:
1025
1026void
1285max_poll_reqs (int nreqs) 1027max_poll_reqs (unsigned int nreqs)
1286 PROTOTYPE: $ 1028 PROTOTYPE: $
1287 CODE: 1029 CODE:
1288 max_poll_reqs = nreqs; 1030 eio_set_max_poll_reqs (nreqs);
1289 1031
1290void 1032void
1291max_poll_time (double nseconds) 1033max_poll_time (double nseconds)
1292 PROTOTYPE: $ 1034 PROTOTYPE: $
1293 CODE: 1035 CODE:
1294 max_poll_time = nseconds * AIO_TICKS; 1036 eio_set_max_poll_time (nseconds);
1295 1037
1296void 1038void
1297min_parallel (int nthreads) 1039min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299
1300void
1301max_parallel (int nthreads)
1302 PROTOTYPE: $
1303
1304void
1305max_idle (int nthreads)
1306 PROTOTYPE: $ 1040 PROTOTYPE: $
1307 CODE: 1041 CODE:
1308 set_max_idle (nthreads); 1042 eio_set_min_parallel (nthreads);
1309 1043
1310int 1044void
1311max_outstanding (int maxreqs) 1045max_parallel (unsigned int nthreads)
1312 PROTOTYPE: $ 1046 PROTOTYPE: $
1313 CODE: 1047 CODE:
1314 RETVAL = max_outstanding; 1048 eio_set_max_parallel (nthreads);
1049
1050void
1051max_idle (unsigned int nthreads)
1052 PROTOTYPE: $
1053 CODE:
1054 eio_set_max_idle (nthreads);
1055
1056void
1057idle_timeout (unsigned int seconds)
1058 PROTOTYPE: $
1059 CODE:
1060 eio_set_idle_timeout (seconds);
1061
1062void
1063max_outstanding (unsigned int maxreqs)
1064 PROTOTYPE: $
1065 CODE:
1315 max_outstanding = maxreqs; 1066 max_outstanding = maxreqs;
1316 OUTPUT:
1317 RETVAL
1318 1067
1319void 1068void
1320aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1069aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1321 SV8 * pathname
1322 int flags
1323 int mode
1324 SV * callback
1325 PROTOTYPE: $$$;$
1326 PPCODE: 1070 PPCODE:
1327{ 1071{
1328 dREQ; 1072 dREQ;
1329 1073
1074 req->type = EIO_WD_OPEN;
1075 req_set_path1 (req, pathname);
1076
1077 REQ_SEND;
1078}
1079
1080void
1081aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1082 PPCODE:
1083{
1084 dREQ;
1085
1330 req->type = REQ_OPEN; 1086 req->type = EIO_OPEN;
1331 req->sv1 = newSVsv (pathname); 1087 req_set_path1 (req, pathname);
1332 req->ptr1 = SvPVbyte_nolen (req->sv1);
1333 req->int1 = flags; 1088 req->int1 = flags;
1334 req->mode = mode; 1089 req->int2 = mode;
1335 1090
1336 REQ_SEND; 1091 REQ_SEND;
1337} 1092}
1338 1093
1339void 1094void
1340aio_close (fh,callback=&PL_sv_undef) 1095aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341 SV * fh
1342 SV * callback
1343 PROTOTYPE: $;$
1344 ALIAS: 1096 ALIAS:
1345 aio_close = REQ_CLOSE
1346 aio_fsync = REQ_FSYNC 1097 aio_fsync = EIO_FSYNC
1347 aio_fdatasync = REQ_FDATASYNC 1098 aio_fdatasync = EIO_FDATASYNC
1099 aio_syncfs = EIO_SYNCFS
1348 PPCODE: 1100 PPCODE:
1349{ 1101{
1102 int fd = s_fileno_croak (fh, 0);
1350 dREQ; 1103 dREQ;
1351 1104
1352 req->type = ix; 1105 req->type = ix;
1353 req->fh = newSVsv (fh); 1106 req->sv1 = newSVsv (fh);
1354 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1107 req->int1 = fd;
1355 1108
1356 REQ_SEND (req); 1109 REQ_SEND;
1357} 1110}
1358 1111
1359void 1112void
1113aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1114 PPCODE:
1115{
1116 int fd = s_fileno_croak (fh, 0);
1117 dREQ;
1118
1119 req->type = EIO_SYNC_FILE_RANGE;
1120 req->sv1 = newSVsv (fh);
1121 req->int1 = fd;
1122 req->offs = offset;
1123 req->size = nbytes;
1124 req->int2 = flags;
1125
1126 REQ_SEND;
1127}
1128
1129void
1130aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1131 PPCODE:
1132{
1133 int fd = s_fileno_croak (fh, 0);
1134 dREQ;
1135
1136 req->type = EIO_FALLOCATE;
1137 req->sv1 = newSVsv (fh);
1138 req->int1 = fd;
1139 req->int2 = mode;
1140 req->offs = offset;
1141 req->size = len;
1142
1143 REQ_SEND;
1144}
1145
1146void
1147aio_close (SV *fh, SV *callback=&PL_sv_undef)
1148 PPCODE:
1149{
1150 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1151 int fd = s_fileno_croak (fh, 0);
1152 dREQ;
1153
1154 if (expect_false (close_fd < 0))
1155 {
1156 int pipefd [2];
1157
1158 if (
1159#ifdef _WIN32
1160 _pipe (pipefd, 1, _O_BINARY) < 0
1161#else
1162 pipe (pipefd) < 0
1163 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1164#endif
1165 || close (pipefd [1]) < 0
1166 )
1167 abort (); /*D*/
1168
1169 close_fd = pipefd [0];
1170 }
1171
1172 req->type = EIO_DUP2;
1173 req->int1 = close_fd;
1174 req->sv2 = newSVsv (fh);
1175 req->int2 = fd;
1176
1177 REQ_SEND;
1178}
1179
1180void
1181aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1182 PPCODE:
1183{
1184 int fd = s_fileno_croak (fh, 0);
1185 dREQ;
1186
1187 req->type = EIO_SEEK;
1188 req->sv1 = newSVsv (fh);
1189 req->int1 = fd;
1190 req->offs = SvVAL64 (offset);
1191 req->int2 = whence;
1192
1193 REQ_SEND;
1194}
1195
1196void
1360aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1197aio_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: 1198 ALIAS:
1368 aio_read = REQ_READ 1199 aio_read = EIO_READ
1369 aio_write = REQ_WRITE 1200 aio_write = EIO_WRITE
1370 PROTOTYPE: $$$$$;$
1371 PPCODE: 1201 PPCODE:
1372{ 1202{
1373 STRLEN svlen; 1203 STRLEN svlen;
1204 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374 char *svptr = SvPVbyte (data, svlen); 1205 char *svptr = SvPVbyte (data, svlen);
1375 1206 UV len = SvUV (length);
1376 SvUPGRADE (data, SVt_PV);
1377 SvPOK_on (data);
1378 1207
1379 if (dataoffset < 0) 1208 if (dataoffset < 0)
1380 dataoffset += svlen; 1209 dataoffset += svlen;
1381 1210
1382 if (dataoffset < 0 || dataoffset > svlen) 1211 if (dataoffset < 0 || dataoffset > svlen)
1383 croak ("data offset outside of string"); 1212 croak ("dataoffset outside of data scalar");
1384 1213
1385 if (ix == REQ_WRITE) 1214 if (ix == EIO_WRITE)
1386 { 1215 {
1387 /* write: check length and adjust. */ 1216 /* write: check length and adjust. */
1388 if (length < 0 || length + dataoffset > svlen) 1217 if (!SvOK (length) || len + dataoffset > svlen)
1389 length = svlen - dataoffset; 1218 len = svlen - dataoffset;
1390 } 1219 }
1391 else 1220 else
1392 { 1221 {
1393 /* read: grow scalar as necessary */ 1222 /* read: check type and grow scalar as necessary */
1223 SvUPGRADE (data, SVt_PV);
1224 if (SvLEN (data) >= SvCUR (data))
1394 svptr = SvGROW (data, length + dataoffset + 1); 1225 svptr = SvGROW (data, len + dataoffset + 1);
1226 else if (SvCUR (data) < len + dataoffset)
1227 croak ("length + dataoffset outside of scalar, and cannot grow");
1395 } 1228 }
1396
1397 if (length < 0)
1398 croak ("length must not be negative");
1399 1229
1400 { 1230 {
1401 dREQ; 1231 dREQ;
1402 1232
1403 req->type = ix; 1233 req->type = ix;
1404 req->fh = newSVsv (fh); 1234 req->sv1 = newSVsv (fh);
1405 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1235 req->int1 = fd;
1406 : IoOFP (sv_2io (fh))); 1236 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407 req->offs = offset;
1408 req->size = length; 1237 req->size = len;
1409 req->sv1 = SvREFCNT_inc (data); 1238 req->sv2 = SvREFCNT_inc (data);
1410 req->ptr1 = (char *)svptr + dataoffset; 1239 req->ptr2 = (char *)svptr + dataoffset;
1411 req->stroffset = dataoffset; 1240 req->stroffset = dataoffset;
1412 1241
1413 if (!SvREADONLY (data)) 1242 if (!SvREADONLY (data))
1414 { 1243 {
1415 SvREADONLY_on (data); 1244 SvREADONLY_on (data);
1416 req->flags |= FLAG_SV1_RO_OFF; 1245 req->flags |= FLAG_SV2_RO_OFF;
1417 } 1246 }
1418 1247
1419 REQ_SEND; 1248 REQ_SEND;
1420 } 1249 }
1421} 1250}
1422 1251
1423void 1252void
1424aio_readlink (path,callback=&PL_sv_undef) 1253aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1425 SV8 * path 1254 ALIAS:
1426 SV * callback 1255 aio_readlink = EIO_READLINK
1427 PROTOTYPE: $$;$ 1256 aio_realpath = EIO_REALPATH
1428 PPCODE: 1257 PPCODE:
1429{ 1258{
1430 SV *data;
1431 dREQ; 1259 dREQ;
1432 1260
1433 data = newSV (NAME_MAX);
1434 SvPOK_on (data);
1435
1436 req->type = REQ_READLINK; 1261 req->type = ix;
1437 req->fh = newSVsv (path); 1262 req_set_path1 (req, pathname);
1438 req->ptr2 = SvPVbyte_nolen (req->fh);
1439 req->sv1 = data;
1440 req->ptr1 = SvPVbyte_nolen (data);
1441 1263
1442 REQ_SEND; 1264 REQ_SEND;
1443} 1265}
1444 1266
1445void 1267void
1446aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1268aio_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: $$$$;$
1453 PPCODE: 1269 PPCODE:
1454{ 1270{
1271 int ifd = s_fileno_croak (in_fh , 0);
1272 int ofd = s_fileno_croak (out_fh, 1);
1455 dREQ; 1273 dREQ;
1456 1274
1457 req->type = REQ_SENDFILE; 1275 req->type = EIO_SENDFILE;
1458 req->fh = newSVsv (out_fh); 1276 req->sv1 = newSVsv (out_fh);
1459 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1277 req->int1 = ofd;
1460 req->sv2 = newSVsv (in_fh); 1278 req->sv2 = newSVsv (in_fh);
1461 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1279 req->int2 = ifd;
1462 req->offs = in_offset; 1280 req->offs = in_offset;
1463 req->size = length; 1281 req->size = length;
1464 1282
1465 REQ_SEND; 1283 REQ_SEND;
1466} 1284}
1467 1285
1468void 1286void
1469aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1287aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470 SV * fh
1471 UV offset
1472 IV length
1473 SV * callback
1474 PROTOTYPE: $$$;$
1475 PPCODE: 1288 PPCODE:
1476{ 1289{
1290 int fd = s_fileno_croak (fh, 0);
1477 dREQ; 1291 dREQ;
1478 1292
1479 req->type = REQ_READAHEAD; 1293 req->type = EIO_READAHEAD;
1480 req->fh = newSVsv (fh); 1294 req->sv1 = newSVsv (fh);
1481 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1295 req->int1 = fd;
1482 req->offs = offset; 1296 req->offs = offset;
1483 req->size = length; 1297 req->size = length;
1484 1298
1485 REQ_SEND; 1299 REQ_SEND;
1486} 1300}
1487 1301
1488void 1302void
1489aio_stat (fh_or_path,callback=&PL_sv_undef) 1303aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490 SV8 * fh_or_path
1491 SV * callback
1492 ALIAS: 1304 ALIAS:
1493 aio_stat = REQ_STAT 1305 aio_stat = EIO_STAT
1494 aio_lstat = REQ_LSTAT 1306 aio_lstat = EIO_LSTAT
1307 aio_statvfs = EIO_STATVFS
1495 PPCODE: 1308 PPCODE:
1496{ 1309{
1497 dREQ; 1310 dREQ;
1498 1311
1499 req->ptr2 = malloc (sizeof (Stat_t)); 1312 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 1313
1521 REQ_SEND; 1314 REQ_SEND;
1522} 1315}
1523 1316
1317UV
1318major (UV dev)
1319 ALIAS:
1320 minor = 1
1321 CODE:
1322 RETVAL = ix ? major (dev) : minor (dev);
1323 OUTPUT:
1324 RETVAL
1325
1326UV
1327makedev (UV maj, UV min)
1328 CODE:
1329 RETVAL = makedev (maj, min);
1330 OUTPUT:
1331 RETVAL
1332
1524void 1333void
1334aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1335 PPCODE:
1336{
1337 dREQ;
1338
1339 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1340 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1341 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1342
1343 REQ_SEND;
1344}
1345
1346void
1347aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1348 PPCODE:
1349{
1350 dREQ;
1351
1352 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1353 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1354
1355 REQ_SEND;
1356}
1357
1358void
1359aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1360 PPCODE:
1361{
1362 dREQ;
1363
1364 req->int2 = mode;
1365 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1366
1367 REQ_SEND;
1368}
1369
1370void
1371aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1372 PPCODE:
1373{
1374 dREQ;
1375
1376 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1377 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1378 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1379
1380 REQ_SEND;
1381}
1382
1383void
1384aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1385 PPCODE:
1386{
1387 dREQ;
1388
1389 req->type = EIO_READDIR;
1390 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1391
1392 if (flags & EIO_READDIR_DENTS)
1393 req->int1 |= EIO_READDIR_CUSTOM2;
1394
1395 req_set_path1 (req, pathname);
1396
1397 REQ_SEND;
1398}
1399
1400void
1401aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1402 PPCODE:
1403{
1404 dREQ;
1405
1406 req->type = EIO_MKDIR;
1407 req->int2 = mode;
1408 req_set_path1 (req, pathname);
1409
1410 REQ_SEND;
1411}
1412
1413void
1525aio_unlink (pathname,callback=&PL_sv_undef) 1414aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526 SV8 * pathname
1527 SV * callback
1528 ALIAS: 1415 ALIAS:
1529 aio_unlink = REQ_UNLINK 1416 aio_unlink = EIO_UNLINK
1530 aio_rmdir = REQ_RMDIR 1417 aio_rmdir = EIO_RMDIR
1531 aio_readdir = REQ_READDIR 1418 aio_readdir = EIO_READDIR
1532 PPCODE: 1419 PPCODE:
1533{ 1420{
1534 dREQ; 1421 dREQ;
1535 1422
1536 req->type = ix; 1423 req->type = ix;
1537 req->sv1 = newSVsv (pathname); 1424 req_set_path1 (req, pathname);
1538 req->ptr1 = SvPVbyte_nolen (req->sv1);
1539 1425
1540 REQ_SEND; 1426 REQ_SEND;
1541} 1427}
1542 1428
1543void 1429void
1544aio_mkdir (pathname,mode,callback=&PL_sv_undef) 1430aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1545 SV8 * pathname 1431 ALIAS:
1546 UV mode 1432 aio_link = EIO_LINK
1547 SV * callback 1433 aio_symlink = EIO_SYMLINK
1434 aio_rename = EIO_RENAME
1548 PPCODE: 1435 PPCODE:
1549{ 1436{
1550 dREQ; 1437 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; 1438 dREQ;
1572 1439
1573 req->type = ix; 1440 req->type = ix;
1574 req->fh = newSVsv (oldpath); 1441 req_set_path1 (req, oldpath);
1575 req->ptr2 = SvPVbyte_nolen (req->fh); 1442 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1576 req->sv1 = newSVsv (newpath); 1443 req->int3 = (long)wd2;
1577 req->ptr1 = SvPVbyte_nolen (req->sv1);
1578 1444
1579 REQ_SEND; 1445 REQ_SEND;
1580} 1446}
1581 1447
1582void 1448void
1583aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1449aio_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: 1450 PPCODE:
1589{ 1451{
1590 dREQ; 1452 dREQ;
1591 1453
1592 req->type = REQ_MKNOD; 1454 req->type = EIO_MKNOD;
1593 req->sv1 = newSVsv (pathname);
1594 req->ptr1 = SvPVbyte_nolen (req->sv1);
1595 req->mode = (mode_t)mode; 1455 req->int2 = (mode_t)mode;
1596 req->offs = dev; 1456 req->offs = dev;
1457 req_set_path1 (req, pathname);
1597 1458
1598 REQ_SEND; 1459 REQ_SEND;
1599} 1460}
1600 1461
1601void 1462void
1463aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1464 ALIAS:
1465 aio_mtouch = EIO_MTOUCH
1466 aio_msync = EIO_MSYNC
1467 PPCODE:
1468{
1469 STRLEN svlen;
1470 char *svptr = SvPVbyte (data, svlen);
1471 UV len = SvUV (length);
1472
1473 if (offset < 0)
1474 offset += svlen;
1475
1476 if (offset < 0 || offset > svlen)
1477 croak ("offset outside of scalar");
1478
1479 if (!SvOK (length) || len + offset > svlen)
1480 len = svlen - offset;
1481
1482 {
1483 dREQ;
1484
1485 req->type = ix;
1486 req->sv2 = SvREFCNT_inc (data);
1487 req->ptr2 = (char *)svptr + offset;
1488 req->size = len;
1489 req->int1 = flags;
1490
1491 REQ_SEND;
1492 }
1493}
1494
1495void
1496aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1497 PPCODE:
1498{
1499 STRLEN svlen;
1500 char *svptr = SvPVbyte (data, svlen);
1501 UV len = SvUV (length);
1502
1503 if (offset < 0)
1504 offset += svlen;
1505
1506 if (offset < 0 || offset > svlen)
1507 croak ("offset outside of scalar");
1508
1509 if (!SvOK (length) || len + offset > svlen)
1510 len = svlen - offset;
1511
1512 {
1513 dREQ;
1514
1515 req->type = EIO_MLOCK;
1516 req->sv2 = SvREFCNT_inc (data);
1517 req->ptr2 = (char *)svptr + offset;
1518 req->size = len;
1519
1520 REQ_SEND;
1521 }
1522}
1523
1524void
1525aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1526 PPCODE:
1527{
1528 dREQ;
1529
1530 req->type = EIO_MLOCKALL;
1531 req->int1 = flags;
1532
1533 REQ_SEND;
1534}
1535
1536void
1537aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1538 PPCODE:
1539{
1540 int fd = s_fileno_croak (fh, 0);
1541 dREQ;
1542
1543 req->type = EIO_CUSTOM;
1544 req->sv1 = newSVsv (fh);
1545 req->int1 = fd;
1546
1547 req->feed = fiemap;
1548#if HAVE_FIEMAP
1549 /* keep our fingers crossed that the next two types are 64 bit */
1550 req->offs = start;
1551 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1552 req->int2 = flags;
1553 req->int3 = SvOK (count) ? SvIV (count) : -1;
1554#endif
1555
1556 REQ_SEND;
1557}
1558
1559void
1602aio_busy (delay,callback=&PL_sv_undef) 1560aio_busy (double delay, SV *callback=&PL_sv_undef)
1603 double delay
1604 SV * callback
1605 PPCODE: 1561 PPCODE:
1606{ 1562{
1607 dREQ; 1563 dREQ;
1608 1564
1609 req->type = REQ_BUSY; 1565 req->type = EIO_BUSY;
1610 req->int1 = delay < 0. ? 0 : delay; 1566 req->nv1 = delay < 0. ? 0. : delay;
1611 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612 1567
1613 REQ_SEND; 1568 REQ_SEND;
1614} 1569}
1615 1570
1616void 1571void
1617aio_group (callback=&PL_sv_undef) 1572aio_group (SV *callback=&PL_sv_undef)
1618 SV * callback
1619 PROTOTYPE: ;$
1620 PPCODE: 1573 PPCODE:
1621{ 1574{
1622 dREQ; 1575 dREQ;
1623 1576
1624 req->type = REQ_GROUP; 1577 req->type = EIO_GROUP;
1625 1578
1626 req_send (req); 1579 req_submit (req);
1627 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1580 XPUSHs (req_sv (req, aio_grp_stash));
1628} 1581}
1629 1582
1630void 1583void
1631aio_nop (callback=&PL_sv_undef) 1584aio_nop (SV *callback=&PL_sv_undef)
1632 SV * callback 1585 ALIAS:
1586 aio_nop = EIO_NOP
1587 aio_sync = EIO_SYNC
1633 PPCODE: 1588 PPCODE:
1634{ 1589{
1635 dREQ; 1590 dREQ;
1636 1591
1637 req->type = REQ_NOP; 1592 req->type = ix;
1638 1593
1639 REQ_SEND; 1594 REQ_SEND;
1640} 1595}
1641 1596
1642int 1597int
1643aioreq_pri (int pri = 0) 1598aioreq_pri (int pri = 0)
1644 PROTOTYPE: ;$
1645 CODE: 1599 CODE:
1646 RETVAL = next_pri - PRI_BIAS; 1600 RETVAL = next_pri;
1647 if (items > 0) 1601 if (items > 0)
1648 { 1602 {
1649 if (pri < PRI_MIN) pri = PRI_MIN; 1603 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650 if (pri > PRI_MAX) pri = PRI_MAX; 1604 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651 next_pri = pri + PRI_BIAS; 1605 next_pri = pri;
1652 } 1606 }
1653 OUTPUT: 1607 OUTPUT:
1654 RETVAL 1608 RETVAL
1655 1609
1656void 1610void
1657aioreq_nice (int nice = 0) 1611aioreq_nice (int nice = 0)
1658 CODE: 1612 CODE:
1659 nice = next_pri - nice; 1613 nice = next_pri - nice;
1660 if (nice < PRI_MIN) nice = PRI_MIN; 1614 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661 if (nice > PRI_MAX) nice = PRI_MAX; 1615 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662 next_pri = nice + PRI_BIAS; 1616 next_pri = nice;
1663 1617
1664void 1618void
1665flush () 1619flush ()
1666 PROTOTYPE:
1667 CODE: 1620 CODE:
1668 while (nreqs) 1621 while (eio_nreqs ())
1669 { 1622 {
1670 poll_wait (); 1623 poll_wait ();
1671 poll_cb (); 1624 poll_cb ();
1672 } 1625 }
1673 1626
1674int 1627int
1675poll() 1628poll ()
1676 PROTOTYPE:
1677 CODE: 1629 CODE:
1678 poll_wait (); 1630 poll_wait ();
1679 RETVAL = poll_cb (); 1631 RETVAL = poll_cb ();
1680 OUTPUT: 1632 OUTPUT:
1681 RETVAL 1633 RETVAL
1682 1634
1683int 1635int
1684poll_fileno() 1636poll_fileno ()
1685 PROTOTYPE:
1686 CODE: 1637 CODE:
1687 RETVAL = respipe [0]; 1638 RETVAL = s_epipe_fd (&respipe);
1688 OUTPUT: 1639 OUTPUT:
1689 RETVAL 1640 RETVAL
1690 1641
1691int 1642int
1692poll_cb(...) 1643poll_cb (...)
1693 PROTOTYPE: 1644 PROTOTYPE:
1694 CODE: 1645 CODE:
1695 RETVAL = poll_cb (); 1646 RETVAL = poll_cb ();
1696 OUTPUT: 1647 OUTPUT:
1697 RETVAL 1648 RETVAL
1698 1649
1699void 1650void
1700poll_wait() 1651poll_wait ()
1701 PROTOTYPE:
1702 CODE: 1652 CODE:
1703 poll_wait (); 1653 poll_wait ();
1704 1654
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 1655int
1743nreqs() 1656nreqs ()
1744 PROTOTYPE:
1745 CODE: 1657 CODE:
1746 RETVAL = nreqs; 1658 RETVAL = eio_nreqs ();
1747 OUTPUT: 1659 OUTPUT:
1748 RETVAL 1660 RETVAL
1749 1661
1750int 1662int
1751nready() 1663nready ()
1752 PROTOTYPE:
1753 CODE: 1664 CODE:
1754 RETVAL = get_nready (); 1665 RETVAL = eio_nready ();
1755 OUTPUT: 1666 OUTPUT:
1756 RETVAL 1667 RETVAL
1757 1668
1758int 1669int
1759npending() 1670npending ()
1760 PROTOTYPE:
1761 CODE: 1671 CODE:
1762 RETVAL = get_npending (); 1672 RETVAL = eio_npending ();
1763 OUTPUT: 1673 OUTPUT:
1764 RETVAL 1674 RETVAL
1765 1675
1766int 1676int
1767nthreads() 1677nthreads ()
1768 PROTOTYPE:
1769 CODE: 1678 CODE:
1770 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1679 RETVAL = eio_nthreads ();
1771 RETVAL = started;
1772 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773 OUTPUT: 1680 OUTPUT:
1774 RETVAL 1681 RETVAL
1775 1682
1683int
1684fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1685 CODE:
1686 RETVAL = posix_fadvise (fh, offset, length, advice);
1687 OUTPUT:
1688 RETVAL
1689
1690IV
1691sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1692 CODE:
1693 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1694 OUTPUT:
1695 RETVAL
1696
1697void
1698mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1699 PPCODE:
1700 sv_unmagic (scalar, MMAP_MAGIC);
1701{
1702 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1703 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1704 if (addr == (void *)-1)
1705 XSRETURN_NO;
1706
1707 sv_force_normal (scalar);
1708
1709 /* we store the length in mg_obj, as namlen is I32 :/ */
1710 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1711 ->mg_obj = (SV *)length;
1712
1713 SvUPGRADE (scalar, SVt_PV); /* nop... */
1714
1715 if (!(prot & PROT_WRITE))
1716 SvREADONLY_on (scalar);
1717
1718 if (SvLEN (scalar))
1719 Safefree (SvPVX (scalar));
1720
1721 SvPVX (scalar) = (char *)addr;
1722 SvCUR_set (scalar, length);
1723 SvLEN_set (scalar, 0);
1724 SvPOK_only (scalar);
1725
1726 XSRETURN_YES;
1727}
1728
1729void
1730munmap (SV *scalar)
1731 CODE:
1732 sv_unmagic (scalar, MMAP_MAGIC);
1733
1734int
1735madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1736 ALIAS:
1737 mprotect = 1
1738 CODE:
1739{
1740 STRLEN svlen;
1741 void *addr = SvPVbyte (scalar, svlen);
1742 size_t len = SvUV (length);
1743
1744 if (offset < 0)
1745 offset += svlen;
1746
1747 if (offset < 0 || offset > svlen)
1748 croak ("offset outside of scalar");
1749
1750 if (!SvOK (length) || len + offset > svlen)
1751 len = svlen - offset;
1752
1753 addr = (void *)(((intptr_t)addr) + offset);
1754 eio_page_align (&addr, &len);
1755
1756 switch (ix)
1757 {
1758 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1759 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1760 }
1761}
1762 OUTPUT:
1763 RETVAL
1764
1765int
1766munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1767 CODE:
1768{
1769 STRLEN svlen;
1770 void *addr = SvPVbyte (scalar, svlen);
1771 size_t len = SvUV (length);
1772
1773 if (offset < 0)
1774 offset += svlen;
1775
1776 if (offset < 0 || offset > svlen)
1777 croak ("offset outside of scalar");
1778
1779 if (!SvOK (length) || len + offset > svlen)
1780 len = svlen - offset;
1781
1782 addr = (void *)(((intptr_t)addr) + offset);
1783 eio_page_align (&addr, &len);
1784#if _POSIX_MEMLOCK_RANGE
1785 RETVAL = munlock (addr, len);
1786#else
1787 RETVAL = EIO_ENOSYS ();
1788#endif
1789}
1790 OUTPUT:
1791 RETVAL
1792
1793int
1794munlockall ()
1795 CODE:
1796#if _POSIX_MEMLOCK
1797 munlockall ();
1798#else
1799 RETVAL = EIO_ENOSYS ();
1800#endif
1801 OUTPUT:
1802 RETVAL
1803
1804int
1805splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1806 CODE:
1807{
1808#if HAVE_LINUX_SPLICE
1809 loff_t off_in_, off_out_;
1810 RETVAL = splice (
1811 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1812 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1813 length, flags
1814 );
1815#else
1816 RETVAL = EIO_ENOSYS ();
1817#endif
1818}
1819 OUTPUT:
1820 RETVAL
1821
1822int
1823tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1824 CODE:
1825#if HAVE_LINUX_SPLICE
1826 RETVAL = tee (rfh, wfh, length, flags);
1827#else
1828 RETVAL = EIO_ENOSYS ();
1829#endif
1830 OUTPUT:
1831 RETVAL
1832
1833void _on_next_submit (SV *cb)
1834 CODE:
1835 SvREFCNT_dec (on_next_submit);
1836 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1837
1776PROTOTYPES: DISABLE 1838PROTOTYPES: DISABLE
1839
1840MODULE = IO::AIO PACKAGE = IO::AIO::WD
1841
1842BOOT:
1843{
1844 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1845 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1846}
1847
1848void
1849DESTROY (SV *self)
1850 CODE:
1851{
1852 aio_wd wd = SvAIO_WD (self);
1853#if HAVE_AT
1854 {
1855 SV *callback = &PL_sv_undef;
1856 dREQ; /* clobbers next_pri :/ */
1857 next_pri = req->pri; /* restore next_pri */
1858 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1859 req->type = EIO_WD_CLOSE;
1860 req->wd = wd;
1861 REQ_SEND;
1862 }
1863#else
1864 eio_wd_close_sync (wd);
1865#endif
1866}
1777 1867
1778MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1868MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779 1869
1780void 1870void
1781cancel (aio_req_ornot req) 1871cancel (aio_req_ornot req)
1782 CODE: 1872 CODE:
1783 req_cancel (req); 1873 eio_cancel (req);
1784 1874
1785void 1875void
1786cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1876cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787 CODE: 1877 PPCODE:
1878{
1879 if (GIMME_V != G_VOID)
1880 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1881
1882 if (items > 1)
1883 {
1884 SV *cb_cv =get_cb (callback);
1885
1788 SvREFCNT_dec (req->callback); 1886 SvREFCNT_dec (req->callback);
1789 req->callback = newSVsv (callback); 1887 req->callback = SvREFCNT_inc (cb_cv);
1888 }
1889}
1790 1890
1791MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1891MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792 1892
1793void 1893void
1794add (aio_req grp, ...) 1894add (aio_req grp, ...)
1795 PPCODE: 1895 PPCODE:
1796{ 1896{
1797 int i; 1897 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 1898
1803 if (grp->int1 == 2) 1899 if (grp->int1 == 2)
1804 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1900 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805 1901
1806 for (i = 1; i < items; ++i ) 1902 for (i = 1; i < items; ++i )
1807 { 1903 {
1904 aio_req req;
1905
1808 if (GIMME_V != G_VOID) 1906 if (GIMME_V != G_VOID)
1809 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1907 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810 1908
1811 req = SvAIO_REQ (ST (i)); 1909 req = SvAIO_REQ (ST (i));
1812 1910
1813 if (req) 1911 if (req)
1814 { 1912 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 } 1913 }
1827} 1914}
1828 1915
1829void 1916void
1830cancel_subs (aio_req_ornot req) 1917cancel_subs (aio_req_ornot req)
… …
1839 AV *av; 1926 AV *av;
1840 1927
1841 grp->errorno = errno; 1928 grp->errorno = errno;
1842 1929
1843 av = newAV (); 1930 av = newAV ();
1931 av_extend (av, items - 1);
1844 1932
1845 for (i = 1; i < items; ++i ) 1933 for (i = 1; i < items; ++i )
1846 av_push (av, newSVsv (ST (i))); 1934 av_push (av, newSVsv (ST (i)));
1847 1935
1848 SvREFCNT_dec (grp->sv1); 1936 SvREFCNT_dec (grp->sv1);
… …
1855 grp->errorno = errorno; 1943 grp->errorno = errorno;
1856 1944
1857void 1945void
1858limit (aio_req grp, int limit) 1946limit (aio_req grp, int limit)
1859 CODE: 1947 CODE:
1860 grp->int2 = limit; 1948 eio_grp_limit (grp, limit);
1861 aio_grp_feed (grp);
1862 1949
1863void 1950void
1864feed (aio_req grp, SV *callback=&PL_sv_undef) 1951feed (aio_req grp, SV *callback=&PL_sv_undef)
1865 CODE: 1952 CODE:
1866{ 1953{
1867 SvREFCNT_dec (grp->sv2); 1954 SvREFCNT_dec (grp->sv2);
1868 grp->sv2 = newSVsv (callback); 1955 grp->sv2 = newSVsv (callback);
1956 grp->feed = aio_grp_feed;
1869 1957
1870 if (grp->int2 <= 0) 1958 if (grp->int2 <= 0)
1871 grp->int2 = 2; 1959 grp->int2 = 2;
1872 1960
1873 aio_grp_feed (grp); 1961 eio_grp_limit (grp, grp->int2);
1874} 1962}
1875 1963

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