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/cvs/IO-AIO/AIO.xs
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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 1.213 by root, Tue Apr 10 05:01:33 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/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 64 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 maybe 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_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
200 break; /* autosizing successful, we are done */
201
202 fiemap->fm_flags = req->int2;
203 fiemap->fm_extent_count = 0;
204
205 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
206 return;
207
208 count = fiemap->fm_mapped_extents;
209
210 free (fiemap);
211 }
212
213 req->result = 0;
214
215#else
216 errno = ENOSYS;
217#endif
218}
219
220/*****************************************************************************/
59 221
60enum { 222enum {
61 REQ_QUIT, 223 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}; 224};
73 225
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; 226typedef eio_req *aio_req;
108typedef aio_cb *aio_req_ornot; 227typedef eio_req *aio_req_ornot;
228typedef eio_wd aio_wd;
109 229
110enum { 230static SV *on_next_submit;
111 PRI_MIN = -4, 231static int next_pri = EIO_PRI_DEFAULT;
112 PRI_MAX = 4, 232static int max_outstanding;
113 233
114 DEFAULT_PRI = 0, 234static s_epipe respipe;
115 PRI_BIAS = -PRI_MIN,
116 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117};
118 235
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); 236static void req_destroy (aio_req req);
318static void req_cancel (aio_req req); 237static void req_cancel (aio_req req);
319 238
239static void
240want_poll (void)
241{
242 /* write a dummy byte to the pipe so fh becomes ready */
243 s_epipe_signal (&respipe);
244}
245
246static void
247done_poll (void)
248{
249 /* read any signals sent by the worker threads */
250 s_epipe_drain (&respipe);
251}
252
320/* must be called at most once */ 253/* must be called at most once */
321static SV *req_sv (aio_req req, const char *klass) 254static SV *
255req_sv (aio_req req, HV *stash)
322{ 256{
323 if (!req->self) 257 if (!req->self)
324 { 258 {
325 req->self = (SV *)newHV (); 259 req->self = (SV *)newHV ();
326 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 260 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327 } 261 }
328 262
329 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 263 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330} 264}
331 265
332static aio_req SvAIO_REQ (SV *sv) 266static SV *
267newSVaio_wd (aio_wd wd)
268{
269 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
270}
271
272static aio_req
273SvAIO_REQ (SV *sv)
333{ 274{
334 MAGIC *mg; 275 MAGIC *mg;
335 276
336 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 277 if (!SvROK (sv)
278 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
279 || (SvSTASH (SvRV (sv)) != aio_grp_stash
280 && SvSTASH (SvRV (sv)) != aio_req_stash
281 && !sv_derived_from (sv, "IO::AIO::REQ")))
337 croak ("object of class " AIO_REQ_KLASS " expected"); 282 croak ("object of class IO::AIO::REQ expected");
338 283
339 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 284 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340 285
341 return mg ? (aio_req)mg->mg_ptr : 0; 286 return mg ? (aio_req)mg->mg_ptr : 0;
342} 287}
343 288
289static aio_wd
290SvAIO_WD (SV *sv)
291{
292 if (!SvROK (sv)
293 || SvTYPE (SvRV (sv)) != SVt_PVMG
294 || SvSTASH (SvRV (sv)) != aio_wd_stash)
295 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
296
297 return (aio_wd)(long)SvIVX (SvRV (sv));
298}
299
300static void
344static void aio_grp_feed (aio_req grp) 301aio_grp_feed (aio_req grp)
345{ 302{
346 block_sig (); 303 if (grp->sv2 && SvOK (grp->sv2))
347
348 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349 { 304 {
350 int old_len = grp->size;
351
352 if (grp->sv2 && SvOK (grp->sv2))
353 {
354 dSP; 305 dSP;
355 306
356 ENTER; 307 ENTER;
357 SAVETMPS; 308 SAVETMPS;
358 PUSHMARK (SP); 309 PUSHMARK (SP);
359 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 310 XPUSHs (req_sv (grp, aio_grp_stash));
360 PUTBACK; 311 PUTBACK;
361 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 312 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362 SPAGAIN; 313 SPAGAIN;
363 FREETMPS; 314 FREETMPS;
364 LEAVE; 315 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 } 316 }
375
376 unblock_sig ();
377} 317}
378 318
379static void aio_grp_dec (aio_req grp) 319static void
320req_submit (eio_req *req)
380{ 321{
381 --grp->size; 322 eio_submit (req);
382 323
383 /* call feeder, if applicable */ 324 if (expect_false (on_next_submit))
384 aio_grp_feed (grp);
385
386 /* finish, if done */
387 if (!grp->size && grp->int1)
388 { 325 {
389 block_sig (); 326 dSP;
327 SV *cb = sv_2mortal (on_next_submit);
390 328
391 if (!req_invoke (grp)) 329 on_next_submit = 0;
392 {
393 req_free (grp);
394 unblock_sig ();
395 croak (0);
396 }
397 330
398 req_free (grp); 331 PUSHMARK (SP);
399 unblock_sig (); 332 PUTBACK;
333 call_sv (cb, G_DISCARD | G_EVAL);
400 } 334 }
401} 335}
402 336
337static int
403static int req_invoke (aio_req req) 338req_invoke (eio_req *req)
404{ 339{
405 dSP;
406
407 if (req->flags & FLAG_SV1_RO_OFF) 340 if (req->flags & FLAG_SV2_RO_OFF)
408 SvREADONLY_off (req->sv1); 341 SvREADONLY_off (req->sv2);
409 342
410 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 343 if (!EIO_CANCELLED (req) && req->callback)
411 { 344 {
345 dSP;
346 static SV *sv_result_cache; /* caches the result integer SV */
347 SV *sv_result;
348
412 ENTER; 349 ENTER;
413 SAVETMPS; 350 SAVETMPS;
414 PUSHMARK (SP); 351 PUSHMARK (SP);
415 EXTEND (SP, 1); 352 EXTEND (SP, 1);
416 353
354 /* do not recreate the result IV from scratch each time */
355 if (expect_true (sv_result_cache))
356 {
357 sv_result = sv_result_cache; sv_result_cache = 0;
358 SvIV_set (sv_result, req->result);
359 SvIOK_only (sv_result);
360 }
361 else
362 {
363 sv_result = newSViv (req->result);
364 SvREADONLY_on (sv_result);
365 }
366
417 switch (req->type) 367 switch (req->type)
418 { 368 {
369 case EIO_WD_OPEN:
370 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
371 break;
372
419 case REQ_READDIR: 373 case EIO_READDIR:
420 { 374 {
421 SV *rv = &PL_sv_undef; 375 SV *rv = &PL_sv_undef;
422 376
423 if (req->result >= 0) 377 if (req->result >= 0)
424 { 378 {
425 int i; 379 int i;
426 char *buf = req->ptr2; 380 char *names = (char *)req->ptr2;
381 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427 AV *av = newAV (); 382 AV *av = newAV ();
428 383
429 av_extend (av, req->result - 1); 384 av_extend (av, req->result - 1);
430 385
431 for (i = 0; i < req->result; ++i) 386 for (i = 0; i < req->result; ++i)
432 { 387 {
433 SV *sv = newSVpv (buf, 0); 388 if (req->int1 & EIO_READDIR_DENTS)
389 {
390 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434 391
392 if (req->int1 & EIO_READDIR_CUSTOM2)
393 {
394 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
395 AV *avent = newAV ();
396
397 av_extend (avent, 2);
398
399 if (!sv_type [ent->type])
400 {
401 sv_type [ent->type] = newSViv (ent->type);
402 SvREADONLY_on (sv_type [ent->type]);
403 }
404
405 av_store (avent, 0, namesv);
406 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
407 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
408
409 av_store (av, i, newRV_noinc ((SV *)avent));
410 }
411 else
435 av_store (av, i, sv); 412 av_store (av, i, namesv);
413
414 ++ent;
415 }
416 else
417 {
418 SV *name = newSVpv (names, 0);
419 av_store (av, i, name);
436 buf += SvCUR (sv) + 1; 420 names += SvCUR (name) + 1;
421 }
437 } 422 }
438 423
439 rv = sv_2mortal (newRV_noinc ((SV *)av)); 424 rv = sv_2mortal (newRV_noinc ((SV *)av));
440 } 425 }
441 426
442 PUSHs (rv); 427 PUSHs (rv);
428
429 if (req->int1 & EIO_READDIR_CUSTOM1)
430 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443 } 431 }
444 break; 432 break;
445 433
446 case REQ_OPEN: 434 case EIO_OPEN:
447 { 435 {
448 /* convert fd to fh */ 436 /* convert fd to fh */
449 SV *fh; 437 SV *fh = &PL_sv_undef;
450 438
451 PUSHs (sv_2mortal (newSViv (req->result))); 439 if (req->result >= 0)
452 PUTBACK; 440 {
453 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 441 GV *gv = (GV *)sv_newmortal ();
454 SPAGAIN; 442 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
443 char sym [64];
444 int symlen;
445
446 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
447 gv_init (gv, aio_stash, sym, symlen, 0);
455 448
456 fh = POPs; 449 symlen = snprintf (
457 PUSHMARK (SP); 450 sym,
451 sizeof (sym),
452 "%s&=%d",
453 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
454 (int)req->result
455 );
456
457 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
458 fh = (SV *)gv;
459 }
460
458 XPUSHs (fh); 461 PUSHs (fh);
459 } 462 }
460 break; 463 break;
461 464
465 case EIO_STATVFS:
466 case EIO_FSTATVFS:
467 {
468 SV *rv = &PL_sv_undef;
469
470#ifndef _WIN32
471 if (req->result >= 0)
472 {
473 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
474 HV *hv = newHV ();
475
476 rv = sv_2mortal (newRV_noinc ((SV *)hv));
477
478 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
479 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
480 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
481 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
482 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
483 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
484 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
485 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
486 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
487 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
488 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
489 }
490#endif
491
492 PUSHs (rv);
493 }
494
495 break;
496
462 case REQ_GROUP: 497 case EIO_GROUP:
463 req->int1 = 2; /* mark group as finished */ 498 req->int1 = 2; /* mark group as finished */
464 499
465 if (req->sv1) 500 if (req->sv1)
466 { 501 {
467 int i; 502 int i;
… …
471 for (i = 0; i <= AvFILL (av); ++i) 506 for (i = 0; i <= AvFILL (av); ++i)
472 PUSHs (*av_fetch (av, i, 0)); 507 PUSHs (*av_fetch (av, i, 0));
473 } 508 }
474 break; 509 break;
475 510
476 case REQ_NOP: 511 case EIO_NOP:
477 case REQ_BUSY: 512 case EIO_BUSY:
478 break; 513 break;
479 514
480 case REQ_READLINK: 515 case EIO_READLINK:
516 case EIO_REALPATH:
481 if (req->result > 0) 517 if (req->result > 0)
518 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
519 break;
520
521 case EIO_STAT:
522 case EIO_LSTAT:
523 case EIO_FSTAT:
524 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
525
526 if (!(PL_laststatval = req->result))
527 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
528 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
529
530 PUSHs (sv_result);
531 break;
532
533 case EIO_SEEK:
534 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
535 break;
536
537 case EIO_READ:
538 {
539 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
540 *SvEND (req->sv2) = 0;
541 SvPOK_only (req->sv2);
542 SvSETMAGIC (req->sv2);
543 PUSHs (sv_result);
544 }
545 break;
546
547 case EIO_CUSTOM:
548 if (req->feed == fiemap)
482 { 549 {
483 SvCUR_set (req->sv1, req->result); 550#if HAVE_FIEMAP
484 *SvEND (req->sv1) = 0;
485 PUSHs (req->sv1); 551 if (!req->result)
552 {
553 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
554
555 if (fiemap->fm_extent_count)
556 {
557 AV *av = newAV ();
558 int i;
559
560 while (fiemap->fm_mapped_extents)
561 {
562 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
563 AV *ext_av = newAV ();
564
565 av_store (ext_av, 3, newSVuv (extent->fe_flags));
566 av_store (ext_av, 2, newSVval64 (extent->fe_length));
567 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
568 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
569
570 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
571 }
572
573 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
574 }
575 else
576 {
577 SvIV_set (sv_result, fiemap->fm_mapped_extents);
578 PUSHs (sv_result);
579 }
580 }
581#endif
486 } 582 }
583 else
584 PUSHs (sv_result);
487 break; 585 break;
488 586
489 case REQ_STAT: 587 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
490 case REQ_LSTAT: 588 if (req->result > 0)
491 case REQ_FSTAT: 589 SvIV_set (sv_result, 0);
492 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 590 /* 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;
503 591
504 default: 592 default:
505 PUSHs (sv_2mortal (newSViv (req->result))); 593 PUSHs (sv_result);
506 break; 594 break;
507 } 595 }
508 596
509 errno = req->errorno; 597 errno = req->errorno;
510 598
511 PUTBACK; 599 PUTBACK;
512 call_sv (req->callback, G_VOID | G_EVAL); 600 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513 SPAGAIN; 601 SPAGAIN;
602
603 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
604 SvREFCNT_dec (sv_result);
605 else
606 sv_result_cache = sv_result;
514 607
515 FREETMPS; 608 FREETMPS;
516 LEAVE; 609 LEAVE;
610
611 PUTBACK;
517 } 612 }
518 613
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); 614 return !!SvTRUE (ERRSV);
534} 615}
535 616
536static void req_free (aio_req req) 617static void
618req_destroy (aio_req req)
537{ 619{
538 if (req->self) 620 if (req->self)
539 { 621 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 622 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 623 SvREFCNT_dec (req->self);
542 } 624 }
543 625
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 626 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 627 SvREFCNT_dec (req->sv2);
628 SvREFCNT_dec (req->sv3);
629 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 630 SvREFCNT_dec (req->callback);
548 631
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 632 free (req);
553} 633}
554 634
635static void
555static void req_cancel_subs (aio_req grp) 636req_cancel_subs (aio_req grp)
556{ 637{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 638 if (grp->type != EIO_GROUP)
560 return; 639 return;
561 640
562 SvREFCNT_dec (grp->sv2); 641 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 642 grp->sv2 = 0;
564 643
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 644 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 645}
568 646
569static void req_cancel (aio_req req) 647static void ecb_cold
648create_respipe (void)
570{ 649{
571 req->flags |= FLAG_CANCELLED; 650 if (s_epipe_renew (&respipe))
572 651 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 652}
575 653
576static void *aio_proc(void *arg); 654static void
577 655poll_wait (void)
578static void start_thread (void)
579{ 656{
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) 657 while (eio_nreqs ())
676 { 658 {
677 int size; 659 int size;
678 if (WORDACCESS_UNSAFE) LOCK (reslock); 660
661 X_LOCK (reslock);
679 size = res_queue.size; 662 size = res_queue.size;
680 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 663 X_UNLOCK (reslock);
681 664
682 if (size) 665 if (size)
683 return; 666 return;
684 667
685 maybe_start_thread (); 668 etp_maybe_start_thread ();
686 669
687 FD_ZERO(&rfd); 670 s_epipe_wait (&respipe);
688 FD_SET(respipe [0], &rfd);
689
690 select (respipe [0] + 1, &rfd, 0, 0, 0);
691 } 671 }
692} 672}
693 673
694static int poll_cb () 674static int
675poll_cb (void)
695{ 676{
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 (;;) 677 for (;;)
709 { 678 {
710 for (;;) 679 int res = eio_poll ();
680
681 if (res > 0)
682 croak (0);
683
684 if (!max_outstanding || max_outstanding > eio_nreqs ())
685 return res;
686
687 poll_wait ();
688 }
689}
690
691static void ecb_cold
692reinit (void)
693{
694 create_respipe ();
695
696 if (eio_init (want_poll, done_poll) < 0)
697 croak ("IO::AIO: unable to initialise eio library");
698}
699
700/*****************************************************************************/
701
702#if !_POSIX_MAPPED_FILES
703# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
704# define munmap(addr,length) EIO_ENOSYS ()
705#endif
706
707#if !_POSIX_MEMORY_PROTECTION
708# define mprotect(addr,len,prot) EIO_ENOSYS ()
709# define PROT_NONE 0
710# define PROT_WRITE 0
711# define MAP_PRIVATE 0
712# define MAP_SHARED 0
713# define MAP_FIXED 0
714#endif
715
716#define MMAP_MAGIC PERL_MAGIC_ext
717
718static int ecb_cold
719mmap_free (pTHX_ SV *sv, MAGIC *mg)
720{
721 int old_errno = errno;
722 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
723 errno = old_errno;
724
725 mg->mg_obj = 0; /* just in case */
726
727 SvREADONLY_off (sv);
728
729 if (SvPVX (sv) != mg->mg_ptr)
730 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
731
732 SvCUR_set (sv, 0);
733 SvPVX (sv) = 0;
734 SvOK_off (sv);
735
736 return 0;
737}
738
739static MGVTBL mmap_vtbl = {
740 0, 0, 0, 0, mmap_free
741};
742
743/*****************************************************************************/
744
745static SV *
746get_cb (SV *cb_sv)
747{
748 SvGETMAGIC (cb_sv);
749 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
750}
751
752static aio_req ecb_noinline
753dreq (SV *callback)
754{
755 SV *cb_cv;
756 aio_req req;
757 int req_pri = next_pri;
758 next_pri = EIO_PRI_DEFAULT;
759
760 cb_cv = get_cb (callback);
761
762 req = calloc (sizeof (*req), 1);
763 if (!req)
764 croak ("out of memory during eio_req allocation");
765
766 req->callback = SvREFCNT_inc (cb_cv);
767 req->pri = req_pri;
768
769 return req;
770}
771
772#define dREQ \
773 aio_req req = dreq (callback); \
774
775#define REQ_SEND \
776 PUTBACK; \
777 req_submit (req); \
778 SPAGAIN; \
779 \
780 if (GIMME_V != G_VOID) \
781 XPUSHs (req_sv (req, aio_req_stash));
782
783ecb_inline void
784req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
785{
786 if (expect_false (SvROK (path)))
787 {
788 SV *rv = SvRV (path);
789 SV *wdob;
790
791 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
711 { 792 {
712 maybe_start_thread (); 793 path = AvARRAY (rv)[1];
794 wdob = AvARRAY (rv)[0];
713 795
714 LOCK (reslock); 796 if (SvOK (wdob))
715 req = reqq_shift (&res_queue);
716
717 if (req)
718 { 797 {
719 --npending; 798 *wd = SvAIO_WD (wdob);
720 799 *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 } 800 }
742 else 801 else
743 { 802 *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 } 803 }
804 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
805 {
806 *wd = (aio_wd)(long)SvIVX (rv);
807 *wdsv = SvREFCNT_inc_NN (rv);
808 *ptr = ".";
809 return; /* path set to "." */
810 }
811 else
812 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
813 }
767 814
768 if (nreqs <= max_outstanding) 815 *pathsv = newSVsv (path);
816 *ptr = SvPVbyte_nolen (*pathsv);
817}
818
819static void ecb_noinline
820req_set_path1 (aio_req req, SV *path)
821{
822 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
823}
824
825static void ecb_noinline
826req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
827{
828 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
829
830 switch (SvTYPE (rv))
831 {
832 case SVt_PVIO:
833 case SVt_PVLV:
834 case SVt_PVGV:
835 req->type = type_fh;
836 req->sv1 = newSVsv (fh_or_path);
837 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
769 break; 838 break;
770 839
771 poll_wait (); 840 default:
772 841 req->type = type_path;
773 ++maxreqs; 842 req_set_path1 (req, fh_or_path);
843 break;
774 } 844 }
775
776 unblock_sig ();
777 return count;
778} 845}
779 846
780static void create_pipe () 847XS(boot_IO__AIO) ecb_cold;
781{
782 if (pipe (respipe))
783 croak ("unable to initialize result pipe");
784 848
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 849MODULE = IO::AIO PACKAGE = IO::AIO
1265 850
1266PROTOTYPES: ENABLE 851PROTOTYPES: ENABLE
1267 852
1268BOOT: 853BOOT:
1269{ 854{
855 static const struct {
856 const char *name;
857 IV iv;
858 } *civ, const_iv[] = {
859# define const_niv(name, value) { # name, (IV) value },
860# define const_iv(name) { # name, (IV) name },
861# define const_eio(name) { # name, (IV) EIO_ ## name },
862
863 /* you have to re-run ./gendef0 after adding/Removing any constants here */
864
865 const_iv (ENOSYS)
866 const_iv (EXDEV)
867 const_iv (EBADR)
868
869 const_iv (O_RDONLY)
870 const_iv (O_WRONLY)
871 const_iv (O_RDWR)
872 const_iv (O_CREAT)
873 const_iv (O_TRUNC)
874 const_iv (O_EXCL)
875 const_iv (O_APPEND)
876
877 const_iv (O_ASYNC)
878 const_iv (O_DIRECT)
879 const_iv (O_NOATIME)
880
881 const_iv (O_CLOEXEC)
882 const_iv (O_NOCTTY)
883 const_iv (O_NOFOLLOW)
884 const_iv (O_NONBLOCK)
885 const_iv (O_EXEC)
886 const_iv (O_SEARCH)
887 const_iv (O_DIRECTORY)
888 const_iv (O_DSYNC)
889 const_iv (O_RSYNC)
890 const_iv (O_SYNC)
891 const_iv (O_TTY_INIT)
892
893 const_iv (S_IFIFO)
894 const_iv (S_IFCHR)
895 const_iv (S_IFBLK)
896 const_iv (S_IFLNK)
897 const_iv (S_IFREG)
898 const_iv (S_IFDIR)
899 const_iv (S_IFWHT)
900 const_iv (S_IFSOCK)
901 const_iv (S_IFMT)
902
903 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
904 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
905 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
906 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
907 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
908 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
909
910 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
911 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
912 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
913 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
914 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
915
916 const_iv (ST_RDONLY)
917 const_iv (ST_NOSUID)
918 const_iv (ST_NODEV)
919 const_iv (ST_NOEXEC)
920 const_iv (ST_SYNCHRONOUS)
921 const_iv (ST_MANDLOCK)
922 const_iv (ST_WRITE)
923 const_iv (ST_APPEND)
924 const_iv (ST_IMMUTABLE)
925 const_iv (ST_NOATIME)
926 const_iv (ST_NODIRATIME)
927 const_iv (ST_RELATIME)
928
929 const_iv (PROT_NONE)
930 const_iv (PROT_EXEC)
931 const_iv (PROT_READ)
932 const_iv (PROT_WRITE)
933
934 /*const_iv (MAP_FIXED)*/
935 const_iv (MAP_PRIVATE)
936 const_iv (MAP_SHARED)
937 const_iv (MAP_ANONYMOUS)
938
939 /* linuxish */
940 const_iv (MAP_HUGETLB)
941 const_iv (MAP_LOCKED)
942 const_iv (MAP_NORESERVE)
943 const_iv (MAP_POPULATE)
944 const_iv (MAP_NONBLOCK)
945
946 const_iv (FIEMAP_FLAG_SYNC)
947 const_iv (FIEMAP_FLAG_XATTR)
948 const_iv (FIEMAP_FLAGS_COMPAT)
949 const_iv (FIEMAP_EXTENT_LAST)
950 const_iv (FIEMAP_EXTENT_UNKNOWN)
951 const_iv (FIEMAP_EXTENT_DELALLOC)
952 const_iv (FIEMAP_EXTENT_ENCODED)
953 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
954 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
955 const_iv (FIEMAP_EXTENT_DATA_INLINE)
956 const_iv (FIEMAP_EXTENT_DATA_TAIL)
957 const_iv (FIEMAP_EXTENT_UNWRITTEN)
958 const_iv (FIEMAP_EXTENT_MERGED)
959 const_iv (FIEMAP_EXTENT_SHARED)
960
961 const_iv (SPLICE_F_MOVE)
962 const_iv (SPLICE_F_NONBLOCK)
963 const_iv (SPLICE_F_MORE)
964 const_iv (SPLICE_F_GIFT)
965
966 const_iv (SEEK_DATA)
967 const_iv (SEEK_HOLE)
968
969 /* libeio constants */
970 const_eio (SEEK_SET)
971 const_eio (SEEK_CUR)
972 const_eio (SEEK_END)
973
974 const_eio (MCL_FUTURE)
975 const_eio (MCL_CURRENT)
976
977 const_eio (MS_ASYNC)
978 const_eio (MS_INVALIDATE)
979 const_eio (MS_SYNC)
980
981 const_eio (MT_MODIFY)
982
983 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
984 const_eio (SYNC_FILE_RANGE_WRITE)
985 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
986
987 const_eio (FALLOC_FL_KEEP_SIZE)
988
989 const_eio (READDIR_DENTS)
990 const_eio (READDIR_DIRS_FIRST)
991 const_eio (READDIR_STAT_ORDER)
992 const_eio (READDIR_FOUND_UNKNOWN)
993
994 const_eio (DT_UNKNOWN)
995 const_eio (DT_FIFO)
996 const_eio (DT_CHR)
997 const_eio (DT_DIR)
998 const_eio (DT_BLK)
999 const_eio (DT_REG)
1000 const_eio (DT_LNK)
1001 const_eio (DT_SOCK)
1002 const_eio (DT_WHT)
1003 };
1004
1270 HV *stash = gv_stashpv ("IO::AIO", 1); 1005 aio_stash = gv_stashpv ("IO::AIO" , 1);
1006 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1007 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1008 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1271 1009
1272 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1010 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1273 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1011 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 1012
1280 create_pipe (); 1013 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282}
1283 1014
1015 reinit ();
1016}
1017
1284void 1018void
1019reinit ()
1020 PROTOTYPE:
1021
1022void
1285max_poll_reqs (int nreqs) 1023max_poll_reqs (unsigned int nreqs)
1286 PROTOTYPE: $ 1024 PROTOTYPE: $
1287 CODE: 1025 CODE:
1288 max_poll_reqs = nreqs; 1026 eio_set_max_poll_reqs (nreqs);
1289 1027
1290void 1028void
1291max_poll_time (double nseconds) 1029max_poll_time (double nseconds)
1292 PROTOTYPE: $ 1030 PROTOTYPE: $
1293 CODE: 1031 CODE:
1294 max_poll_time = nseconds * AIO_TICKS; 1032 eio_set_max_poll_time (nseconds);
1295 1033
1296void 1034void
1297min_parallel (int nthreads) 1035min_parallel (unsigned int nthreads)
1298 PROTOTYPE: $
1299
1300void
1301max_parallel (int nthreads)
1302 PROTOTYPE: $
1303
1304void
1305max_idle (int nthreads)
1306 PROTOTYPE: $ 1036 PROTOTYPE: $
1307 CODE: 1037 CODE:
1308 set_max_idle (nthreads); 1038 eio_set_min_parallel (nthreads);
1309 1039
1310int 1040void
1311max_outstanding (int maxreqs) 1041max_parallel (unsigned int nthreads)
1312 PROTOTYPE: $ 1042 PROTOTYPE: $
1313 CODE: 1043 CODE:
1314 RETVAL = max_outstanding; 1044 eio_set_max_parallel (nthreads);
1045
1046void
1047max_idle (unsigned int nthreads)
1048 PROTOTYPE: $
1049 CODE:
1050 eio_set_max_idle (nthreads);
1051
1052void
1053idle_timeout (unsigned int seconds)
1054 PROTOTYPE: $
1055 CODE:
1056 eio_set_idle_timeout (seconds);
1057
1058void
1059max_outstanding (unsigned int maxreqs)
1060 PROTOTYPE: $
1061 CODE:
1315 max_outstanding = maxreqs; 1062 max_outstanding = maxreqs;
1316 OUTPUT:
1317 RETVAL
1318 1063
1319void 1064void
1320aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1065aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1321 SV8 * pathname
1322 int flags
1323 int mode
1324 SV * callback
1325 PROTOTYPE: $$$;$
1326 PPCODE: 1066 PPCODE:
1327{ 1067{
1328 dREQ; 1068 dREQ;
1329 1069
1070 req->type = EIO_WD_OPEN;
1071 req_set_path1 (req, pathname);
1072
1073 REQ_SEND;
1074}
1075
1076void
1077aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1078 PPCODE:
1079{
1080 dREQ;
1081
1330 req->type = REQ_OPEN; 1082 req->type = EIO_OPEN;
1331 req->sv1 = newSVsv (pathname); 1083 req_set_path1 (req, pathname);
1332 req->ptr1 = SvPVbyte_nolen (req->sv1);
1333 req->int1 = flags; 1084 req->int1 = flags;
1334 req->mode = mode; 1085 req->int2 = mode;
1335 1086
1336 REQ_SEND; 1087 REQ_SEND;
1337} 1088}
1338 1089
1339void 1090void
1340aio_close (fh,callback=&PL_sv_undef) 1091aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341 SV * fh
1342 SV * callback
1343 PROTOTYPE: $;$
1344 ALIAS: 1092 ALIAS:
1345 aio_close = REQ_CLOSE
1346 aio_fsync = REQ_FSYNC 1093 aio_fsync = EIO_FSYNC
1347 aio_fdatasync = REQ_FDATASYNC 1094 aio_fdatasync = EIO_FDATASYNC
1095 aio_syncfs = EIO_SYNCFS
1348 PPCODE: 1096 PPCODE:
1349{ 1097{
1098 int fd = s_fileno_croak (fh, 0);
1350 dREQ; 1099 dREQ;
1351 1100
1352 req->type = ix; 1101 req->type = ix;
1353 req->fh = newSVsv (fh); 1102 req->sv1 = newSVsv (fh);
1354 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1103 req->int1 = fd;
1355 1104
1356 REQ_SEND (req); 1105 REQ_SEND;
1357} 1106}
1358 1107
1359void 1108void
1109aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1110 PPCODE:
1111{
1112 int fd = s_fileno_croak (fh, 0);
1113 dREQ;
1114
1115 req->type = EIO_SYNC_FILE_RANGE;
1116 req->sv1 = newSVsv (fh);
1117 req->int1 = fd;
1118 req->offs = offset;
1119 req->size = nbytes;
1120 req->int2 = flags;
1121
1122 REQ_SEND;
1123}
1124
1125void
1126aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1127 PPCODE:
1128{
1129 int fd = s_fileno_croak (fh, 0);
1130 dREQ;
1131
1132 req->type = EIO_FALLOCATE;
1133 req->sv1 = newSVsv (fh);
1134 req->int1 = fd;
1135 req->int2 = mode;
1136 req->offs = offset;
1137 req->size = len;
1138
1139 REQ_SEND;
1140}
1141
1142void
1143aio_close (SV *fh, SV *callback=&PL_sv_undef)
1144 PPCODE:
1145{
1146 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1147 int fd = s_fileno_croak (fh, 0);
1148 dREQ;
1149
1150 if (expect_false (close_fd < 0))
1151 {
1152 int pipefd [2];
1153
1154 if (
1155#ifdef _WIN32
1156 _pipe (pipefd, 1, _O_BINARY) < 0
1157#else
1158 pipe (pipefd) < 0
1159 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1160#endif
1161 || close (pipefd [1]) < 0
1162 )
1163 abort (); /*D*/
1164
1165 close_fd = pipefd [0];
1166 }
1167
1168 req->type = EIO_DUP2;
1169 req->int1 = close_fd;
1170 req->sv2 = newSVsv (fh);
1171 req->int2 = fd;
1172
1173 REQ_SEND;
1174}
1175
1176void
1177aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1178 PPCODE:
1179{
1180 int fd = s_fileno_croak (fh, 0);
1181 dREQ;
1182
1183 req->type = EIO_SEEK;
1184 req->sv1 = newSVsv (fh);
1185 req->int1 = fd;
1186 req->offs = SvVAL64 (offset);
1187 req->int2 = whence;
1188
1189 REQ_SEND;
1190}
1191
1192void
1360aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1193aio_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: 1194 ALIAS:
1368 aio_read = REQ_READ 1195 aio_read = EIO_READ
1369 aio_write = REQ_WRITE 1196 aio_write = EIO_WRITE
1370 PROTOTYPE: $$$$$;$
1371 PPCODE: 1197 PPCODE:
1372{ 1198{
1373 STRLEN svlen; 1199 STRLEN svlen;
1200 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374 char *svptr = SvPVbyte (data, svlen); 1201 char *svptr = SvPVbyte (data, svlen);
1375 1202 UV len = SvUV (length);
1376 SvUPGRADE (data, SVt_PV);
1377 SvPOK_on (data);
1378 1203
1379 if (dataoffset < 0) 1204 if (dataoffset < 0)
1380 dataoffset += svlen; 1205 dataoffset += svlen;
1381 1206
1382 if (dataoffset < 0 || dataoffset > svlen) 1207 if (dataoffset < 0 || dataoffset > svlen)
1383 croak ("data offset outside of string"); 1208 croak ("dataoffset outside of data scalar");
1384 1209
1385 if (ix == REQ_WRITE) 1210 if (ix == EIO_WRITE)
1386 { 1211 {
1387 /* write: check length and adjust. */ 1212 /* write: check length and adjust. */
1388 if (length < 0 || length + dataoffset > svlen) 1213 if (!SvOK (length) || len + dataoffset > svlen)
1389 length = svlen - dataoffset; 1214 len = svlen - dataoffset;
1390 } 1215 }
1391 else 1216 else
1392 { 1217 {
1393 /* read: grow scalar as necessary */ 1218 /* read: check type and grow scalar as necessary */
1219 SvUPGRADE (data, SVt_PV);
1394 svptr = SvGROW (data, length + dataoffset + 1); 1220 svptr = SvGROW (data, len + dataoffset + 1);
1395 } 1221 }
1396
1397 if (length < 0)
1398 croak ("length must not be negative");
1399 1222
1400 { 1223 {
1401 dREQ; 1224 dREQ;
1402 1225
1403 req->type = ix; 1226 req->type = ix;
1404 req->fh = newSVsv (fh); 1227 req->sv1 = newSVsv (fh);
1405 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1228 req->int1 = fd;
1406 : IoOFP (sv_2io (fh))); 1229 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407 req->offs = offset;
1408 req->size = length; 1230 req->size = len;
1409 req->sv1 = SvREFCNT_inc (data); 1231 req->sv2 = SvREFCNT_inc (data);
1410 req->ptr1 = (char *)svptr + dataoffset; 1232 req->ptr2 = (char *)svptr + dataoffset;
1411 req->stroffset = dataoffset; 1233 req->stroffset = dataoffset;
1412 1234
1413 if (!SvREADONLY (data)) 1235 if (!SvREADONLY (data))
1414 { 1236 {
1415 SvREADONLY_on (data); 1237 SvREADONLY_on (data);
1416 req->flags |= FLAG_SV1_RO_OFF; 1238 req->flags |= FLAG_SV2_RO_OFF;
1417 } 1239 }
1418 1240
1419 REQ_SEND; 1241 REQ_SEND;
1420 } 1242 }
1421} 1243}
1422 1244
1423void 1245void
1424aio_readlink (path,callback=&PL_sv_undef) 1246aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1425 SV8 * path 1247 ALIAS:
1426 SV * callback 1248 aio_readlink = EIO_READLINK
1427 PROTOTYPE: $$;$ 1249 aio_realpath = EIO_REALPATH
1428 PPCODE: 1250 PPCODE:
1429{ 1251{
1430 SV *data;
1431 dREQ; 1252 dREQ;
1432 1253
1433 data = newSV (NAME_MAX);
1434 SvPOK_on (data);
1435
1436 req->type = REQ_READLINK; 1254 req->type = ix;
1437 req->fh = newSVsv (path); 1255 req_set_path1 (req, pathname);
1438 req->ptr2 = SvPVbyte_nolen (req->fh);
1439 req->sv1 = data;
1440 req->ptr1 = SvPVbyte_nolen (data);
1441 1256
1442 REQ_SEND; 1257 REQ_SEND;
1443} 1258}
1444 1259
1445void 1260void
1446aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1261aio_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: $$$$;$
1453 PPCODE: 1262 PPCODE:
1454{ 1263{
1264 int ifd = s_fileno_croak (in_fh , 0);
1265 int ofd = s_fileno_croak (out_fh, 1);
1455 dREQ; 1266 dREQ;
1456 1267
1457 req->type = REQ_SENDFILE; 1268 req->type = EIO_SENDFILE;
1458 req->fh = newSVsv (out_fh); 1269 req->sv1 = newSVsv (out_fh);
1459 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1270 req->int1 = ofd;
1460 req->sv2 = newSVsv (in_fh); 1271 req->sv2 = newSVsv (in_fh);
1461 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1272 req->int2 = ifd;
1462 req->offs = in_offset; 1273 req->offs = in_offset;
1463 req->size = length; 1274 req->size = length;
1464 1275
1465 REQ_SEND; 1276 REQ_SEND;
1466} 1277}
1467 1278
1468void 1279void
1469aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1280aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470 SV * fh
1471 UV offset
1472 IV length
1473 SV * callback
1474 PROTOTYPE: $$$;$
1475 PPCODE: 1281 PPCODE:
1476{ 1282{
1283 int fd = s_fileno_croak (fh, 0);
1477 dREQ; 1284 dREQ;
1478 1285
1479 req->type = REQ_READAHEAD; 1286 req->type = EIO_READAHEAD;
1480 req->fh = newSVsv (fh); 1287 req->sv1 = newSVsv (fh);
1481 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1288 req->int1 = fd;
1482 req->offs = offset; 1289 req->offs = offset;
1483 req->size = length; 1290 req->size = length;
1484 1291
1485 REQ_SEND; 1292 REQ_SEND;
1486} 1293}
1487 1294
1488void 1295void
1489aio_stat (fh_or_path,callback=&PL_sv_undef) 1296aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490 SV8 * fh_or_path
1491 SV * callback
1492 ALIAS: 1297 ALIAS:
1493 aio_stat = REQ_STAT 1298 aio_stat = EIO_STAT
1494 aio_lstat = REQ_LSTAT 1299 aio_lstat = EIO_LSTAT
1300 aio_statvfs = EIO_STATVFS
1495 PPCODE: 1301 PPCODE:
1496{ 1302{
1497 dREQ; 1303 dREQ;
1498 1304
1499 req->ptr2 = malloc (sizeof (Stat_t)); 1305 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 1306
1521 REQ_SEND; 1307 REQ_SEND;
1522} 1308}
1523 1309
1310UV
1311major (UV dev)
1312 ALIAS:
1313 minor = 1
1314 CODE:
1315 RETVAL = ix ? major (dev) : minor (dev);
1316 OUTPUT:
1317 RETVAL
1318
1319UV
1320makedev (UV maj, UV min)
1321 CODE:
1322 RETVAL = makedev (maj, min);
1323 OUTPUT:
1324 RETVAL
1325
1524void 1326void
1327aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1328 PPCODE:
1329{
1330 dREQ;
1331
1332 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1333 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1334 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1335
1336 REQ_SEND;
1337}
1338
1339void
1340aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1341 PPCODE:
1342{
1343 dREQ;
1344
1345 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1346 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1347
1348 REQ_SEND;
1349}
1350
1351void
1352aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1353 PPCODE:
1354{
1355 dREQ;
1356
1357 req->int2 = mode;
1358 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1359
1360 REQ_SEND;
1361}
1362
1363void
1364aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1365 PPCODE:
1366{
1367 dREQ;
1368
1369 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1370 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1371 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1372
1373 REQ_SEND;
1374}
1375
1376void
1377aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1378 PPCODE:
1379{
1380 dREQ;
1381
1382 req->type = EIO_READDIR;
1383 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1384
1385 if (flags & EIO_READDIR_DENTS)
1386 req->int1 |= EIO_READDIR_CUSTOM2;
1387
1388 req_set_path1 (req, pathname);
1389
1390 REQ_SEND;
1391}
1392
1393void
1394aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1395 PPCODE:
1396{
1397 dREQ;
1398
1399 req->type = EIO_MKDIR;
1400 req->int2 = mode;
1401 req_set_path1 (req, pathname);
1402
1403 REQ_SEND;
1404}
1405
1406void
1525aio_unlink (pathname,callback=&PL_sv_undef) 1407aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526 SV8 * pathname
1527 SV * callback
1528 ALIAS: 1408 ALIAS:
1529 aio_unlink = REQ_UNLINK 1409 aio_unlink = EIO_UNLINK
1530 aio_rmdir = REQ_RMDIR 1410 aio_rmdir = EIO_RMDIR
1531 aio_readdir = REQ_READDIR 1411 aio_readdir = EIO_READDIR
1532 PPCODE: 1412 PPCODE:
1533{ 1413{
1534 dREQ; 1414 dREQ;
1535 1415
1536 req->type = ix; 1416 req->type = ix;
1537 req->sv1 = newSVsv (pathname); 1417 req_set_path1 (req, pathname);
1538 req->ptr1 = SvPVbyte_nolen (req->sv1);
1539 1418
1540 REQ_SEND; 1419 REQ_SEND;
1541} 1420}
1542 1421
1543void 1422void
1544aio_mkdir (pathname,mode,callback=&PL_sv_undef) 1423aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1545 SV8 * pathname 1424 ALIAS:
1546 UV mode 1425 aio_link = EIO_LINK
1547 SV * callback 1426 aio_symlink = EIO_SYMLINK
1427 aio_rename = EIO_RENAME
1548 PPCODE: 1428 PPCODE:
1549{ 1429{
1550 dREQ; 1430 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; 1431 dREQ;
1572 1432
1573 req->type = ix; 1433 req->type = ix;
1574 req->fh = newSVsv (oldpath); 1434 req_set_path1 (req, oldpath);
1575 req->ptr2 = SvPVbyte_nolen (req->fh); 1435 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1576 req->sv1 = newSVsv (newpath); 1436 req->int3 = (long)wd2;
1577 req->ptr1 = SvPVbyte_nolen (req->sv1);
1578 1437
1579 REQ_SEND; 1438 REQ_SEND;
1580} 1439}
1581 1440
1582void 1441void
1583aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1442aio_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: 1443 PPCODE:
1589{ 1444{
1590 dREQ; 1445 dREQ;
1591 1446
1592 req->type = REQ_MKNOD; 1447 req->type = EIO_MKNOD;
1593 req->sv1 = newSVsv (pathname);
1594 req->ptr1 = SvPVbyte_nolen (req->sv1);
1595 req->mode = (mode_t)mode; 1448 req->int2 = (mode_t)mode;
1596 req->offs = dev; 1449 req->offs = dev;
1450 req_set_path1 (req, pathname);
1597 1451
1598 REQ_SEND; 1452 REQ_SEND;
1599} 1453}
1600 1454
1601void 1455void
1456aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1457 ALIAS:
1458 aio_mtouch = EIO_MTOUCH
1459 aio_msync = EIO_MSYNC
1460 PPCODE:
1461{
1462 STRLEN svlen;
1463 char *svptr = SvPVbyte (data, svlen);
1464 UV len = SvUV (length);
1465
1466 if (offset < 0)
1467 offset += svlen;
1468
1469 if (offset < 0 || offset > svlen)
1470 croak ("offset outside of scalar");
1471
1472 if (!SvOK (length) || len + offset > svlen)
1473 len = svlen - offset;
1474
1475 {
1476 dREQ;
1477
1478 req->type = ix;
1479 req->sv2 = SvREFCNT_inc (data);
1480 req->ptr2 = (char *)svptr + offset;
1481 req->size = len;
1482 req->int1 = flags;
1483
1484 REQ_SEND;
1485 }
1486}
1487
1488void
1489aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1490 PPCODE:
1491{
1492 STRLEN svlen;
1493 char *svptr = SvPVbyte (data, svlen);
1494 UV len = SvUV (length);
1495
1496 if (offset < 0)
1497 offset += svlen;
1498
1499 if (offset < 0 || offset > svlen)
1500 croak ("offset outside of scalar");
1501
1502 if (!SvOK (length) || len + offset > svlen)
1503 len = svlen - offset;
1504
1505 {
1506 dREQ;
1507
1508 req->type = EIO_MLOCK;
1509 req->sv2 = SvREFCNT_inc (data);
1510 req->ptr2 = (char *)svptr + offset;
1511 req->size = len;
1512
1513 REQ_SEND;
1514 }
1515}
1516
1517void
1518aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1519 PPCODE:
1520{
1521 dREQ;
1522
1523 req->type = EIO_MLOCKALL;
1524 req->int1 = flags;
1525
1526 REQ_SEND;
1527}
1528
1529void
1530aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1531 PPCODE:
1532{
1533 int fd = s_fileno_croak (fh, 0);
1534 dREQ;
1535
1536 req->type = EIO_CUSTOM;
1537 req->sv1 = newSVsv (fh);
1538 req->int1 = fd;
1539
1540 req->feed = fiemap;
1541#if HAVE_FIEMAP
1542 /* keep our fingers crossed that the next two types are 64 bit */
1543 req->offs = start;
1544 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1545 req->int2 = flags;
1546 req->int3 = SvOK (count) ? SvIV (count) : -1;
1547#endif
1548
1549 REQ_SEND;
1550}
1551
1552void
1602aio_busy (delay,callback=&PL_sv_undef) 1553aio_busy (double delay, SV *callback=&PL_sv_undef)
1603 double delay
1604 SV * callback
1605 PPCODE: 1554 PPCODE:
1606{ 1555{
1607 dREQ; 1556 dREQ;
1608 1557
1609 req->type = REQ_BUSY; 1558 req->type = EIO_BUSY;
1610 req->int1 = delay < 0. ? 0 : delay; 1559 req->nv1 = delay < 0. ? 0. : delay;
1611 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612 1560
1613 REQ_SEND; 1561 REQ_SEND;
1614} 1562}
1615 1563
1616void 1564void
1617aio_group (callback=&PL_sv_undef) 1565aio_group (SV *callback=&PL_sv_undef)
1618 SV * callback
1619 PROTOTYPE: ;$
1620 PPCODE: 1566 PPCODE:
1621{ 1567{
1622 dREQ; 1568 dREQ;
1623 1569
1624 req->type = REQ_GROUP; 1570 req->type = EIO_GROUP;
1625 1571
1626 req_send (req); 1572 req_submit (req);
1627 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1573 XPUSHs (req_sv (req, aio_grp_stash));
1628} 1574}
1629 1575
1630void 1576void
1631aio_nop (callback=&PL_sv_undef) 1577aio_nop (SV *callback=&PL_sv_undef)
1632 SV * callback 1578 ALIAS:
1579 aio_nop = EIO_NOP
1580 aio_sync = EIO_SYNC
1633 PPCODE: 1581 PPCODE:
1634{ 1582{
1635 dREQ; 1583 dREQ;
1636 1584
1637 req->type = REQ_NOP; 1585 req->type = ix;
1638 1586
1639 REQ_SEND; 1587 REQ_SEND;
1640} 1588}
1641 1589
1642int 1590int
1643aioreq_pri (int pri = 0) 1591aioreq_pri (int pri = 0)
1644 PROTOTYPE: ;$
1645 CODE: 1592 CODE:
1646 RETVAL = next_pri - PRI_BIAS; 1593 RETVAL = next_pri;
1647 if (items > 0) 1594 if (items > 0)
1648 { 1595 {
1649 if (pri < PRI_MIN) pri = PRI_MIN; 1596 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650 if (pri > PRI_MAX) pri = PRI_MAX; 1597 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651 next_pri = pri + PRI_BIAS; 1598 next_pri = pri;
1652 } 1599 }
1653 OUTPUT: 1600 OUTPUT:
1654 RETVAL 1601 RETVAL
1655 1602
1656void 1603void
1657aioreq_nice (int nice = 0) 1604aioreq_nice (int nice = 0)
1658 CODE: 1605 CODE:
1659 nice = next_pri - nice; 1606 nice = next_pri - nice;
1660 if (nice < PRI_MIN) nice = PRI_MIN; 1607 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661 if (nice > PRI_MAX) nice = PRI_MAX; 1608 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662 next_pri = nice + PRI_BIAS; 1609 next_pri = nice;
1663 1610
1664void 1611void
1665flush () 1612flush ()
1666 PROTOTYPE:
1667 CODE: 1613 CODE:
1668 while (nreqs) 1614 while (eio_nreqs ())
1669 { 1615 {
1670 poll_wait (); 1616 poll_wait ();
1671 poll_cb (); 1617 poll_cb ();
1672 } 1618 }
1673 1619
1674int 1620int
1675poll() 1621poll ()
1676 PROTOTYPE:
1677 CODE: 1622 CODE:
1678 poll_wait (); 1623 poll_wait ();
1679 RETVAL = poll_cb (); 1624 RETVAL = poll_cb ();
1680 OUTPUT: 1625 OUTPUT:
1681 RETVAL 1626 RETVAL
1682 1627
1683int 1628int
1684poll_fileno() 1629poll_fileno ()
1685 PROTOTYPE:
1686 CODE: 1630 CODE:
1687 RETVAL = respipe [0]; 1631 RETVAL = s_epipe_fd (&respipe);
1688 OUTPUT: 1632 OUTPUT:
1689 RETVAL 1633 RETVAL
1690 1634
1691int 1635int
1692poll_cb(...) 1636poll_cb (...)
1693 PROTOTYPE: 1637 PROTOTYPE:
1694 CODE: 1638 CODE:
1695 RETVAL = poll_cb (); 1639 RETVAL = poll_cb ();
1696 OUTPUT: 1640 OUTPUT:
1697 RETVAL 1641 RETVAL
1698 1642
1699void 1643void
1700poll_wait() 1644poll_wait ()
1701 PROTOTYPE:
1702 CODE: 1645 CODE:
1703 poll_wait (); 1646 poll_wait ();
1704 1647
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 1648int
1743nreqs() 1649nreqs ()
1744 PROTOTYPE:
1745 CODE: 1650 CODE:
1746 RETVAL = nreqs; 1651 RETVAL = eio_nreqs ();
1747 OUTPUT: 1652 OUTPUT:
1748 RETVAL 1653 RETVAL
1749 1654
1750int 1655int
1751nready() 1656nready ()
1752 PROTOTYPE:
1753 CODE: 1657 CODE:
1754 RETVAL = get_nready (); 1658 RETVAL = eio_nready ();
1755 OUTPUT: 1659 OUTPUT:
1756 RETVAL 1660 RETVAL
1757 1661
1758int 1662int
1759npending() 1663npending ()
1760 PROTOTYPE:
1761 CODE: 1664 CODE:
1762 RETVAL = get_npending (); 1665 RETVAL = eio_npending ();
1763 OUTPUT: 1666 OUTPUT:
1764 RETVAL 1667 RETVAL
1765 1668
1766int 1669int
1767nthreads() 1670nthreads ()
1768 PROTOTYPE:
1769 CODE: 1671 CODE:
1770 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1672 RETVAL = eio_nthreads ();
1771 RETVAL = started;
1772 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773 OUTPUT: 1673 OUTPUT:
1774 RETVAL 1674 RETVAL
1775 1675
1676int
1677fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1678 CODE:
1679 RETVAL = posix_fadvise (fh, offset, length, advice);
1680 OUTPUT:
1681 RETVAL
1682
1683IV
1684sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1685 CODE:
1686 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1687 OUTPUT:
1688 RETVAL
1689
1690void
1691mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1692 PPCODE:
1693 sv_unmagic (scalar, MMAP_MAGIC);
1694{
1695 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1696 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1697 if (addr == (void *)-1)
1698 XSRETURN_NO;
1699
1700 sv_force_normal (scalar);
1701
1702 /* we store the length in mg_obj, as namlen is I32 :/ */
1703 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1704 ->mg_obj = (SV *)length;
1705
1706 SvUPGRADE (scalar, SVt_PV); /* nop... */
1707
1708 if (!(prot & PROT_WRITE))
1709 SvREADONLY_on (scalar);
1710
1711 if (SvLEN (scalar))
1712 Safefree (SvPVX (scalar));
1713
1714 SvPVX (scalar) = (char *)addr;
1715 SvCUR_set (scalar, length);
1716 SvLEN_set (scalar, 0);
1717 SvPOK_only (scalar);
1718
1719 XSRETURN_YES;
1720}
1721
1722void
1723munmap (SV *scalar)
1724 CODE:
1725 sv_unmagic (scalar, MMAP_MAGIC);
1726
1727int
1728madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1729 ALIAS:
1730 mprotect = 1
1731 CODE:
1732{
1733 STRLEN svlen;
1734 void *addr = SvPVbyte (scalar, svlen);
1735 size_t len = SvUV (length);
1736
1737 if (offset < 0)
1738 offset += svlen;
1739
1740 if (offset < 0 || offset > svlen)
1741 croak ("offset outside of scalar");
1742
1743 if (!SvOK (length) || len + offset > svlen)
1744 len = svlen - offset;
1745
1746 addr = (void *)(((intptr_t)addr) + offset);
1747 eio_page_align (&addr, &len);
1748
1749 switch (ix)
1750 {
1751 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1752 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1753 }
1754}
1755 OUTPUT:
1756 RETVAL
1757
1758int
1759munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1760 CODE:
1761{
1762 STRLEN svlen;
1763 void *addr = SvPVbyte (scalar, svlen);
1764 size_t len = SvUV (length);
1765
1766 if (offset < 0)
1767 offset += svlen;
1768
1769 if (offset < 0 || offset > svlen)
1770 croak ("offset outside of scalar");
1771
1772 if (!SvOK (length) || len + offset > svlen)
1773 len = svlen - offset;
1774
1775 addr = (void *)(((intptr_t)addr) + offset);
1776 eio_page_align (&addr, &len);
1777#if _POSIX_MEMLOCK_RANGE
1778 RETVAL = munlock (addr, len);
1779#else
1780 RETVAL = EIO_ENOSYS ();
1781#endif
1782}
1783 OUTPUT:
1784 RETVAL
1785
1786int
1787munlockall ()
1788 CODE:
1789#if _POSIX_MEMLOCK
1790 munlockall ();
1791#else
1792 RETVAL = EIO_ENOSYS ();
1793#endif
1794 OUTPUT:
1795 RETVAL
1796
1797int
1798splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1799 CODE:
1800{
1801#if HAVE_LINUX_SPLICE
1802 loff_t off_in_, off_out_;
1803 RETVAL = splice (
1804 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1805 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1806 length, flags
1807 );
1808#else
1809 RETVAL = EIO_ENOSYS ();
1810#endif
1811}
1812 OUTPUT:
1813 RETVAL
1814
1815int
1816tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1817 CODE:
1818#if HAVE_LINUX_SPLICE
1819 RETVAL = tee (rfh, wfh, length, flags);
1820#else
1821 RETVAL = EIO_ENOSYS ();
1822#endif
1823 OUTPUT:
1824 RETVAL
1825
1826void _on_next_submit (SV *cb)
1827 CODE:
1828 SvREFCNT_dec (on_next_submit);
1829 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1830
1776PROTOTYPES: DISABLE 1831PROTOTYPES: DISABLE
1832
1833MODULE = IO::AIO PACKAGE = IO::AIO::WD
1834
1835BOOT:
1836{
1837 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1838 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1839}
1840
1841void
1842DESTROY (SV *self)
1843 CODE:
1844{
1845 aio_wd wd = SvAIO_WD (self);
1846#if HAVE_AT
1847 {
1848 SV *callback = &PL_sv_undef;
1849 dREQ; /* clobbers next_pri :/ */
1850 next_pri = req->pri; /* restore next_pri */
1851 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1852 req->type = EIO_WD_CLOSE;
1853 req->wd = wd;
1854 REQ_SEND;
1855 }
1856#else
1857 eio_wd_close_sync (wd);
1858#endif
1859}
1777 1860
1778MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1861MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779 1862
1780void 1863void
1781cancel (aio_req_ornot req) 1864cancel (aio_req_ornot req)
1782 CODE: 1865 CODE:
1783 req_cancel (req); 1866 eio_cancel (req);
1784 1867
1785void 1868void
1786cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1869cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787 CODE: 1870 PPCODE:
1871{
1872 if (GIMME_V != G_VOID)
1873 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1874
1875 if (items > 1)
1876 {
1877 SV *cb_cv =get_cb (callback);
1878
1788 SvREFCNT_dec (req->callback); 1879 SvREFCNT_dec (req->callback);
1789 req->callback = newSVsv (callback); 1880 req->callback = SvREFCNT_inc (cb_cv);
1881 }
1882}
1790 1883
1791MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1884MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792 1885
1793void 1886void
1794add (aio_req grp, ...) 1887add (aio_req grp, ...)
1795 PPCODE: 1888 PPCODE:
1796{ 1889{
1797 int i; 1890 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 1891
1803 if (grp->int1 == 2) 1892 if (grp->int1 == 2)
1804 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1893 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805 1894
1806 for (i = 1; i < items; ++i ) 1895 for (i = 1; i < items; ++i )
1807 { 1896 {
1897 aio_req req;
1898
1808 if (GIMME_V != G_VOID) 1899 if (GIMME_V != G_VOID)
1809 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1900 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810 1901
1811 req = SvAIO_REQ (ST (i)); 1902 req = SvAIO_REQ (ST (i));
1812 1903
1813 if (req) 1904 if (req)
1814 { 1905 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 } 1906 }
1827} 1907}
1828 1908
1829void 1909void
1830cancel_subs (aio_req_ornot req) 1910cancel_subs (aio_req_ornot req)
… …
1839 AV *av; 1919 AV *av;
1840 1920
1841 grp->errorno = errno; 1921 grp->errorno = errno;
1842 1922
1843 av = newAV (); 1923 av = newAV ();
1924 av_extend (av, items - 1);
1844 1925
1845 for (i = 1; i < items; ++i ) 1926 for (i = 1; i < items; ++i )
1846 av_push (av, newSVsv (ST (i))); 1927 av_push (av, newSVsv (ST (i)));
1847 1928
1848 SvREFCNT_dec (grp->sv1); 1929 SvREFCNT_dec (grp->sv1);
… …
1855 grp->errorno = errorno; 1936 grp->errorno = errorno;
1856 1937
1857void 1938void
1858limit (aio_req grp, int limit) 1939limit (aio_req grp, int limit)
1859 CODE: 1940 CODE:
1860 grp->int2 = limit; 1941 eio_grp_limit (grp, limit);
1861 aio_grp_feed (grp);
1862 1942
1863void 1943void
1864feed (aio_req grp, SV *callback=&PL_sv_undef) 1944feed (aio_req grp, SV *callback=&PL_sv_undef)
1865 CODE: 1945 CODE:
1866{ 1946{
1867 SvREFCNT_dec (grp->sv2); 1947 SvREFCNT_dec (grp->sv2);
1868 grp->sv2 = newSVsv (callback); 1948 grp->sv2 = newSVsv (callback);
1949 grp->feed = aio_grp_feed;
1869 1950
1870 if (grp->int2 <= 0) 1951 if (grp->int2 <= 0)
1871 grp->int2 = 2; 1952 grp->int2 = 2;
1872 1953
1873 aio_grp_feed (grp); 1954 eio_grp_limit (grp, grp->int2);
1874} 1955}
1875 1956

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