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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.212 by root, Sun Apr 8 00:11:50 2012 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
27#include <limits.h> 16#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 17#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 18#include <sched.h>
32 19
33#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h>
22#endif
23
34# 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>
35# include <sys/sendfile.h> 82 #include <sys/select.h>
36# elif __freebsd 83 #include <unistd.h>
37# include <sys/socket.h> 84 #include <utime.h>
38# include <sys/uio.h> 85 #include <signal.h>
39# elif __hpux 86
40# include <sys/socket.h> 87 #define EIO_STRUCT_STAT Stat_t
41# elif __solaris /* not yet */ 88
42# 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
43# else 140# else
44# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 142# endif
46#endif 143#endif
47 144
48/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 146#include "def0.h"
50 147
51/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
52#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
53# define NAME_MAX 4096
54#endif 150#endif
55 151#ifndef major
56#ifndef PTHREAD_STACK_MIN 152# define major(dev) ((dev) >> 8)
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
60 157
61#if __ia64 158#ifndef PAGESIZE
62# define STACKSIZE 65536 159# define PAGESIZE sysconf (_SC_PAGESIZE)
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 160#endif
64# define STACKSIZE PTHREAD_STACK_MIN 161
162/*****************************************************************************/
163
164static void
165fiemap (eio_req *req)
166{
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)
183 return;
184
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
65#else 215#else
66# define STACKSIZE 16384 216 errno = ENOSYS;
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif 217#endif
79#endif 218}
80 219
81/* buffer size for various temporary buffers */ 220/*****************************************************************************/
82#define AIO_BUFSIZE 65536
83
84#define dBUF \
85 char *aio_buf; \
86 LOCK (wrklock); \
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88 UNLOCK (wrklock); \
89 if (!aio_buf) \
90 return -1;
91 221
92enum { 222enum {
93 REQ_QUIT, 223 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104}; 224};
105 225
106#define AIO_REQ_KLASS "IO::AIO::REQ"
107#define AIO_GRP_KLASS "IO::AIO::GRP"
108
109typedef struct aio_cb
110{
111 struct aio_cb *volatile next;
112
113 SV *callback, *fh;
114 SV *sv1, *sv2;
115 void *ptr1, *ptr2;
116 Stat_t *statdata;
117 off_t offs;
118 size_t size;
119 ssize_t result;
120
121 STRLEN stroffset;
122 int type;
123 int int1, int2;
124 int errorno;
125 mode_t mode; /* open */
126
127 unsigned char flags;
128 unsigned char pri;
129
130 SV *self; /* the perl counterpart of this request, if any */
131 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132} aio_cb;
133
134enum {
135 FLAG_CANCELLED = 0x01,
136 FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */
137};
138
139typedef aio_cb *aio_req; 226typedef eio_req *aio_req;
140typedef aio_cb *aio_req_ornot; 227typedef eio_req *aio_req_ornot;
228typedef eio_wd aio_wd;
141 229
142enum { 230static SV *on_next_submit;
143 PRI_MIN = -4, 231static int next_pri = EIO_PRI_DEFAULT;
144 PRI_MAX = 4, 232static int max_outstanding;
145 233
146 DEFAULT_PRI = 0, 234static s_epipe respipe;
147 PRI_BIAS = -PRI_MIN,
148 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149};
150 235
151#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153static unsigned int max_poll_time = 0;
154static unsigned int max_poll_reqs = 0;
155
156/* calculcate time difference in ~1/AIO_TICKS of a second */
157static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158{
159 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
161}
162
163static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165static unsigned int started, idle, wanted;
166
167#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169#else
170# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171#endif
172
173#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176/* worker threads management */
177static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179typedef struct worker {
180 /* locked by wrklock */
181 struct worker *prev, *next;
182
183 pthread_t tid;
184
185 /* locked by reslock, reqlock or wrklock */
186 aio_req req; /* currently processed request */
187 void *dbuf;
188 DIR *dirp;
189} worker;
190
191static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193static void worker_clear (worker *wrk)
194{
195 if (wrk->dirp)
196 {
197 closedir (wrk->dirp);
198 wrk->dirp = 0;
199 }
200
201 if (wrk->dbuf)
202 {
203 free (wrk->dbuf);
204 wrk->dbuf = 0;
205 }
206}
207
208static void worker_free (worker *wrk)
209{
210 wrk->next->prev = wrk->prev;
211 wrk->prev->next = wrk->next;
212
213 free (wrk);
214}
215
216static volatile unsigned int nreqs, nready, npending;
217static volatile unsigned int max_idle = 4;
218static volatile unsigned int max_outstanding = 0xffffffff;
219static int respipe [2];
220
221static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225#if WORDACCESS_UNSAFE
226
227static unsigned int get_nready ()
228{
229 unsigned int retval;
230
231 LOCK (reqlock);
232 retval = nready;
233 UNLOCK (reqlock);
234
235 return retval;
236}
237
238static unsigned int get_npending ()
239{
240 unsigned int retval;
241
242 LOCK (reslock);
243 retval = npending;
244 UNLOCK (reslock);
245
246 return retval;
247}
248
249static unsigned int get_nthreads ()
250{
251 unsigned int retval;
252
253 LOCK (wrklock);
254 retval = started;
255 UNLOCK (wrklock);
256
257 return retval;
258}
259
260#else
261
262# define get_nready() nready
263# define get_npending() npending
264# define get_nthreads() started
265
266#endif
267
268/*
269 * a somewhat faster data structure might be nice, but
270 * with 8 priorities this actually needs <20 insns
271 * per shift, the most expensive operation.
272 */
273typedef struct {
274 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275 int size;
276} reqq;
277
278static reqq req_queue;
279static reqq res_queue;
280
281int reqq_push (reqq *q, aio_req req)
282{
283 int pri = req->pri;
284 req->next = 0;
285
286 if (q->qe[pri])
287 {
288 q->qe[pri]->next = req;
289 q->qe[pri] = req;
290 }
291 else
292 q->qe[pri] = q->qs[pri] = req;
293
294 return q->size++;
295}
296
297aio_req reqq_shift (reqq *q)
298{
299 int pri;
300
301 if (!q->size)
302 return 0;
303
304 --q->size;
305
306 for (pri = NUM_PRI; pri--; )
307 {
308 aio_req req = q->qs[pri];
309
310 if (req)
311 {
312 if (!(q->qs[pri] = req->next))
313 q->qe[pri] = 0;
314
315 return req;
316 }
317 }
318
319 abort ();
320}
321
322static int poll_cb ();
323static void req_invoke (aio_req req);
324static void req_free (aio_req req); 236static void req_destroy (aio_req req);
325static void req_cancel (aio_req req); 237static void req_cancel (aio_req req);
326 238
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
327/* must be called at most once */ 253/* must be called at most once */
328static SV *req_sv (aio_req req, const char *klass) 254static SV *
255req_sv (aio_req req, HV *stash)
329{ 256{
330 if (!req->self) 257 if (!req->self)
331 { 258 {
332 req->self = (SV *)newHV (); 259 req->self = (SV *)newHV ();
333 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 260 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334 } 261 }
335 262
336 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 263 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337} 264}
338 265
339static 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)
340{ 274{
341 MAGIC *mg; 275 MAGIC *mg;
342 276
343 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")))
344 croak ("object of class " AIO_REQ_KLASS " expected"); 282 croak ("object of class IO::AIO::REQ expected");
345 283
346 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 284 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347 285
348 return mg ? (aio_req)mg->mg_ptr : 0; 286 return mg ? (aio_req)mg->mg_ptr : 0;
349} 287}
350 288
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
351static void aio_grp_feed (aio_req grp) 301aio_grp_feed (aio_req grp)
352{ 302{
353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 303 if (grp->sv2 && SvOK (grp->sv2))
354 { 304 {
355 int old_len = grp->size;
356
357 if (grp->sv2 && SvOK (grp->sv2))
358 {
359 dSP; 305 dSP;
360 306
361 ENTER; 307 ENTER;
362 SAVETMPS; 308 SAVETMPS;
363 PUSHMARK (SP); 309 PUSHMARK (SP);
364 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 310 XPUSHs (req_sv (grp, aio_grp_stash));
365 PUTBACK; 311 PUTBACK;
366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 312 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367 SPAGAIN; 313 SPAGAIN;
368 FREETMPS; 314 FREETMPS;
369 LEAVE; 315 LEAVE;
370 }
371
372 /* stop if no progress has been made */
373 if (old_len == grp->size)
374 {
375 SvREFCNT_dec (grp->sv2);
376 grp->sv2 = 0;
377 break;
378 }
379 } 316 }
380} 317}
381 318
382static void aio_grp_dec (aio_req grp) 319static void
320req_submit (eio_req *req)
383{ 321{
384 --grp->size; 322 eio_submit (req);
385 323
386 /* call feeder, if applicable */ 324 if (expect_false (on_next_submit))
387 aio_grp_feed (grp);
388
389 /* finish, if done */
390 if (!grp->size && grp->int1)
391 { 325 {
392 req_invoke (grp); 326 dSP;
393 req_free (grp); 327 SV *cb = sv_2mortal (on_next_submit);
328
329 on_next_submit = 0;
330
331 PUSHMARK (SP);
332 PUTBACK;
333 call_sv (cb, G_DISCARD | G_EVAL);
394 } 334 }
395} 335}
396 336
337static int
397static void req_invoke (aio_req req) 338req_invoke (eio_req *req)
398{ 339{
399 dSP;
400
401 if (req->flags & FLAG_DATA_RO_OFF) 340 if (req->flags & FLAG_SV2_RO_OFF)
402 SvREADONLY_off (req->sv1); 341 SvREADONLY_off (req->sv2);
403 342
404 if (req->statdata) 343 if (!EIO_CANCELLED (req) && req->callback)
405 { 344 {
406 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 345 dSP;
407 PL_laststatval = req->result; 346 static SV *sv_result_cache; /* caches the result integer SV */
408 PL_statcache = *(req->statdata); 347 SV *sv_result;
409 }
410 348
411 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412 {
413 ENTER; 349 ENTER;
414 SAVETMPS; 350 SAVETMPS;
415 PUSHMARK (SP); 351 PUSHMARK (SP);
416 EXTEND (SP, 1); 352 EXTEND (SP, 1);
417 353
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
418 switch (req->type) 367 switch (req->type)
419 { 368 {
369 case EIO_WD_OPEN:
370 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
371 break;
372
420 case REQ_READDIR: 373 case EIO_READDIR:
421 { 374 {
422 SV *rv = &PL_sv_undef; 375 SV *rv = &PL_sv_undef;
423 376
424 if (req->result >= 0) 377 if (req->result >= 0)
425 { 378 {
426 int i; 379 int i;
427 char *buf = req->ptr2; 380 char *names = (char *)req->ptr2;
381 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428 AV *av = newAV (); 382 AV *av = newAV ();
429 383
430 av_extend (av, req->result - 1); 384 av_extend (av, req->result - 1);
431 385
432 for (i = 0; i < req->result; ++i) 386 for (i = 0; i < req->result; ++i)
433 { 387 {
434 SV *sv = newSVpv (buf, 0); 388 if (req->int1 & EIO_READDIR_DENTS)
389 {
390 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435 391
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
436 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);
437 buf += SvCUR (sv) + 1; 420 names += SvCUR (name) + 1;
421 }
438 } 422 }
439 423
440 rv = sv_2mortal (newRV_noinc ((SV *)av)); 424 rv = sv_2mortal (newRV_noinc ((SV *)av));
441 } 425 }
442 426
443 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))));
444 } 431 }
445 break; 432 break;
446 433
447 case REQ_OPEN: 434 case EIO_OPEN:
448 { 435 {
449 /* convert fd to fh */ 436 /* convert fd to fh */
450 SV *fh; 437 SV *fh = &PL_sv_undef;
451 438
452 PUSHs (sv_2mortal (newSViv (req->result))); 439 if (req->result >= 0)
453 PUTBACK; 440 {
454 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 441 GV *gv = (GV *)sv_newmortal ();
455 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);
456 448
457 fh = SvREFCNT_inc (POPs); 449 symlen = snprintf (
450 sym,
451 sizeof (sym),
452 "%s&=%d",
453 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
454 (int)req->result
455 );
458 456
457 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
458 fh = (SV *)gv;
459 }
460
459 PUSHMARK (SP); 461 PUSHs (fh);
460 XPUSHs (sv_2mortal (fh));
461 } 462 }
462 break; 463 break;
463 464
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
464 case REQ_GROUP: 497 case EIO_GROUP:
465 req->int1 = 2; /* mark group as finished */ 498 req->int1 = 2; /* mark group as finished */
466 499
467 if (req->sv1) 500 if (req->sv1)
468 { 501 {
469 int i; 502 int i;
… …
473 for (i = 0; i <= AvFILL (av); ++i) 506 for (i = 0; i <= AvFILL (av); ++i)
474 PUSHs (*av_fetch (av, i, 0)); 507 PUSHs (*av_fetch (av, i, 0));
475 } 508 }
476 break; 509 break;
477 510
478 case REQ_NOP: 511 case EIO_NOP:
479 case REQ_BUSY: 512 case EIO_BUSY:
480 break; 513 break;
481 514
482 case REQ_READLINK: 515 case EIO_READLINK:
516 case EIO_REALPATH:
483 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)
484 { 549 {
485 SvCUR_set (req->sv1, req->result); 550#if HAVE_FIEMAP
486 *SvEND (req->sv1) = 0;
487 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
488 } 582 }
583 else
584 PUSHs (sv_result);
489 break; 585 break;
490 586
491 case REQ_READ: 587 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
492 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0)); 588 if (req->result > 0)
493 *SvEND (req->sv1) = 0; 589 SvIV_set (sv_result, 0);
494 /* fall through */ 590 /* FALLTHROUGH */
591
495 default: 592 default:
496 PUSHs (sv_2mortal (newSViv (req->result))); 593 PUSHs (sv_result);
497 break; 594 break;
498 } 595 }
499 596
500 errno = req->errorno; 597 errno = req->errorno;
501 598
502 PUTBACK; 599 PUTBACK;
503 call_sv (req->callback, G_VOID | G_EVAL); 600 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504 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;
505 607
506 FREETMPS; 608 FREETMPS;
507 LEAVE; 609 LEAVE;
610
611 PUTBACK;
508 } 612 }
509 613
510 if (req->grp) 614 return !!SvTRUE (ERRSV);
511 {
512 aio_req grp = req->grp;
513
514 /* unlink request */
515 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518 if (grp->grp_first == req)
519 grp->grp_first = req->grp_next;
520
521 aio_grp_dec (grp);
522 }
523
524 if (SvTRUE (ERRSV))
525 {
526 req_free (req);
527 croak (0);
528 }
529} 615}
530 616
531static void req_free (aio_req req) 617static void
618req_destroy (aio_req req)
532{ 619{
533 if (req->self) 620 if (req->self)
534 { 621 {
535 sv_unmagic (req->self, PERL_MAGIC_ext); 622 sv_unmagic (req->self, PERL_MAGIC_ext);
536 SvREFCNT_dec (req->self); 623 SvREFCNT_dec (req->self);
537 } 624 }
538 625
539 SvREFCNT_dec (req->fh);
540 SvREFCNT_dec (req->sv1); 626 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2); 627 SvREFCNT_dec (req->sv2);
628 SvREFCNT_dec (req->sv3);
629 SvREFCNT_dec (req->sv4);
542 SvREFCNT_dec (req->callback); 630 SvREFCNT_dec (req->callback);
543 Safefree (req->statdata);
544 631
545 if (req->type == REQ_READDIR)
546 free (req->ptr2);
547
548 Safefree (req); 632 free (req);
549} 633}
550 634
635static void
551static void req_cancel_subs (aio_req grp) 636req_cancel_subs (aio_req grp)
552{ 637{
553 aio_req sub;
554
555 if (grp->type != REQ_GROUP) 638 if (grp->type != EIO_GROUP)
556 return; 639 return;
557 640
558 SvREFCNT_dec (grp->sv2); 641 SvREFCNT_dec (grp->sv2);
559 grp->sv2 = 0; 642 grp->sv2 = 0;
560 643
561 for (sub = grp->grp_first; sub; sub = sub->grp_next) 644 eio_grp_cancel (grp);
562 req_cancel (sub);
563} 645}
564 646
565static void req_cancel (aio_req req) 647static void ecb_cold
648create_respipe (void)
566{ 649{
567 req->flags |= FLAG_CANCELLED; 650 if (s_epipe_renew (&respipe))
568 651 croak ("IO::AIO: unable to initialize result pipe");
569 req_cancel_subs (req);
570} 652}
571 653
572static void *aio_proc(void *arg); 654static void
573 655poll_wait (void)
574static void start_thread (void)
575{ 656{
576 sigset_t fullsigset, oldsigset;
577 pthread_attr_t attr;
578
579 worker *wrk = calloc (1, sizeof (worker));
580
581 if (!wrk)
582 croak ("unable to allocate worker thread data");
583
584 pthread_attr_init (&attr);
585 pthread_attr_setstacksize (&attr, STACKSIZE);
586 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587#ifdef PTHREAD_SCOPE_PROCESS
588 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589#endif
590
591 sigfillset (&fullsigset);
592
593 LOCK (wrklock);
594 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597 {
598 wrk->prev = &wrk_first;
599 wrk->next = wrk_first.next;
600 wrk_first.next->prev = wrk;
601 wrk_first.next = wrk;
602 ++started;
603 }
604 else
605 free (wrk);
606
607 sigprocmask (SIG_SETMASK, &oldsigset, 0);
608 UNLOCK (wrklock);
609}
610
611static void maybe_start_thread ()
612{
613 if (get_nthreads () >= wanted)
614 return;
615
616 /* todo: maybe use idle here, but might be less exact */
617 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618 return;
619
620 start_thread ();
621}
622
623static void req_send (aio_req req)
624{
625 ++nreqs;
626
627 LOCK (reqlock);
628 ++nready;
629 reqq_push (&req_queue, req);
630 pthread_cond_signal (&reqwait);
631 UNLOCK (reqlock);
632
633 maybe_start_thread ();
634}
635
636static void end_thread (void)
637{
638 aio_req req;
639
640 Newz (0, req, 1, aio_cb);
641
642 req->type = REQ_QUIT;
643 req->pri = PRI_MAX + PRI_BIAS;
644
645 LOCK (reqlock);
646 reqq_push (&req_queue, req);
647 pthread_cond_signal (&reqwait);
648 UNLOCK (reqlock);
649
650 LOCK (wrklock);
651 --started;
652 UNLOCK (wrklock);
653}
654
655static void set_max_idle (int nthreads)
656{
657 if (WORDACCESS_UNSAFE) LOCK (reqlock);
658 max_idle = nthreads <= 0 ? 1 : nthreads;
659 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660}
661
662static void min_parallel (int nthreads)
663{
664 if (wanted < nthreads)
665 wanted = nthreads;
666}
667
668static void max_parallel (int nthreads)
669{
670 if (wanted > nthreads)
671 wanted = nthreads;
672
673 while (started > wanted)
674 end_thread ();
675}
676
677static void poll_wait ()
678{
679 fd_set rfd;
680
681 while (nreqs) 657 while (eio_nreqs ())
682 { 658 {
683 int size; 659 int size;
684 if (WORDACCESS_UNSAFE) LOCK (reslock); 660
661 X_LOCK (reslock);
685 size = res_queue.size; 662 size = res_queue.size;
686 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 663 X_UNLOCK (reslock);
687 664
688 if (size) 665 if (size)
689 return; 666 return;
690 667
691 maybe_start_thread (); 668 etp_maybe_start_thread ();
692 669
693 FD_ZERO(&rfd); 670 s_epipe_wait (&respipe);
694 FD_SET(respipe [0], &rfd);
695
696 select (respipe [0] + 1, &rfd, 0, 0, 0);
697 } 671 }
698} 672}
699 673
700static int poll_cb () 674static int
675poll_cb (void)
701{ 676{
702 dSP;
703 int count = 0;
704 int maxreqs = max_poll_reqs;
705 int do_croak = 0;
706 struct timeval tv_start, tv_now;
707 aio_req req;
708
709 if (max_poll_time)
710 gettimeofday (&tv_start, 0);
711
712 for (;;) 677 for (;;)
713 { 678 {
714 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) (errno = ENOSYS, -1)
704# define munmap(addr,length) (errno = ENOSYS, -1)
705#endif
706
707#if !_POSIX_MEMORY_PROTECTION
708# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
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)
715 { 792 {
716 maybe_start_thread (); 793 path = AvARRAY (rv)[1];
794 wdob = AvARRAY (rv)[0];
717 795
718 LOCK (reslock); 796 if (SvOK (wdob))
719 req = reqq_shift (&res_queue);
720
721 if (req)
722 { 797 {
723 --npending; 798 *wd = SvAIO_WD (wdob);
724 799 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725 if (!res_queue.size)
726 {
727 /* read any signals sent by the worker threads */
728 char buf [32];
729 while (read (respipe [0], buf, 32) == 32)
730 ;
731 }
732 }
733
734 UNLOCK (reslock);
735
736 if (!req)
737 break;
738
739 --nreqs;
740
741 if (req->type == REQ_GROUP && req->size)
742 {
743 req->int1 = 1; /* mark request as delayed */
744 continue;
745 } 800 }
746 else 801 else
747 { 802 *wd = EIO_INVALID_WD;
748 req_invoke (req);
749
750 count++;
751 }
752
753 req_free (req);
754
755 if (maxreqs && !--maxreqs)
756 break;
757
758 if (max_poll_time)
759 {
760 gettimeofday (&tv_now, 0);
761
762 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763 break;
764 }
765 } 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 }
766 814
767 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)));
768 break; 838 break;
769 839
770 poll_wait (); 840 default:
771 841 req->type = type_path;
772 ++maxreqs; 842 req_set_path1 (req, fh_or_path);
843 break;
773 } 844 }
774
775 return count;
776} 845}
777 846
778static void create_pipe () 847XS(boot_IO__AIO) ecb_cold;
779{
780 if (pipe (respipe))
781 croak ("unable to initialize result pipe");
782 848
783 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784 croak ("cannot set result pipe to nonblocking mode");
785
786 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787 croak ("cannot set result pipe to nonblocking mode");
788}
789
790/*****************************************************************************/
791/* work around various missing functions */
792
793#if !HAVE_PREADWRITE
794# define pread aio_pread
795# define pwrite aio_pwrite
796
797/*
798 * make our pread/pwrite safe against themselves, but not against
799 * normal read/write by using a mutex. slows down execution a lot,
800 * but that's your problem, not mine.
801 */
802static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805{
806 ssize_t res;
807 off_t ooffset;
808
809 LOCK (preadwritelock);
810 ooffset = lseek (fd, 0, SEEK_CUR);
811 lseek (fd, offset, SEEK_SET);
812 res = read (fd, buf, count);
813 lseek (fd, ooffset, SEEK_SET);
814 UNLOCK (preadwritelock);
815
816 return res;
817}
818
819static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820{
821 ssize_t res;
822 off_t ooffset;
823
824 LOCK (preadwritelock);
825 ooffset = lseek (fd, 0, SEEK_CUR);
826 lseek (fd, offset, SEEK_SET);
827 res = write (fd, buf, count);
828 lseek (fd, offset, SEEK_SET);
829 UNLOCK (preadwritelock);
830
831 return res;
832}
833#endif
834
835#if !HAVE_FDATASYNC
836# define fdatasync fsync
837#endif
838
839#if !HAVE_READAHEAD
840# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843{
844 dBUF;
845
846 while (count > 0)
847 {
848 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850 pread (fd, aio_buf, len, offset);
851 offset += len;
852 count -= len;
853 }
854
855 errno = 0;
856}
857
858#endif
859
860#if !HAVE_READDIR_R
861# define readdir_r aio_readdir_r
862
863static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866{
867 struct dirent *e;
868 int errorno;
869
870 LOCK (readdirlock);
871
872 e = readdir (dirp);
873 errorno = errno;
874
875 if (e)
876 {
877 *res = ent;
878 strcpy (ent->d_name, e->d_name);
879 }
880 else
881 *res = 0;
882
883 UNLOCK (readdirlock);
884
885 errno = errorno;
886 return e ? 0 : -1;
887}
888#endif
889
890/* sendfile always needs emulation */
891static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892{
893 ssize_t res;
894
895 if (!count)
896 return 0;
897
898#if HAVE_SENDFILE
899# if __linux
900 res = sendfile (ofd, ifd, &offset, count);
901
902# elif __freebsd
903 /*
904 * Of course, the freebsd sendfile is a dire hack with no thoughts
905 * wasted on making it similar to other I/O functions.
906 */
907 {
908 off_t sbytes;
909 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910
911 if (res < 0 && sbytes)
912 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913 res = sbytes;
914 }
915
916# elif __hpux
917 res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919# elif __solaris
920 {
921 struct sendfilevec vec;
922 size_t sbytes;
923
924 vec.sfv_fd = ifd;
925 vec.sfv_flag = 0;
926 vec.sfv_off = offset;
927 vec.sfv_len = count;
928
929 res = sendfilev (ofd, &vec, 1, &sbytes);
930
931 if (res < 0 && sbytes)
932 res = sbytes;
933 }
934
935# endif
936#else
937 res = -1;
938 errno = ENOSYS;
939#endif
940
941 if (res < 0
942 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943#if __solaris
944 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
945#endif
946 )
947 )
948 {
949 /* emulate sendfile. this is a major pain in the ass */
950 dBUF;
951
952 res = 0;
953
954 while (count)
955 {
956 ssize_t cnt;
957
958 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959
960 if (cnt <= 0)
961 {
962 if (cnt && !res) res = -1;
963 break;
964 }
965
966 cnt = write (ofd, aio_buf, cnt);
967
968 if (cnt <= 0)
969 {
970 if (cnt && !res) res = -1;
971 break;
972 }
973
974 offset += cnt;
975 res += cnt;
976 count -= cnt;
977 }
978 }
979
980 return res;
981}
982
983/* read a full directory */
984static void scandir_ (aio_req req, worker *self)
985{
986 DIR *dirp;
987 union
988 {
989 struct dirent d;
990 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991 } *u;
992 struct dirent *entp;
993 char *name, *names;
994 int memlen = 4096;
995 int memofs = 0;
996 int res = 0;
997 int errorno;
998
999 LOCK (wrklock);
1000 self->dirp = dirp = opendir (req->ptr1);
1001 self->dbuf = u = malloc (sizeof (*u));
1002 req->ptr2 = names = malloc (memlen);
1003 UNLOCK (wrklock);
1004
1005 if (dirp && u && names)
1006 for (;;)
1007 {
1008 errno = 0;
1009 readdir_r (dirp, &u->d, &entp);
1010
1011 if (!entp)
1012 break;
1013
1014 name = entp->d_name;
1015
1016 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017 {
1018 int len = strlen (name) + 1;
1019
1020 res++;
1021
1022 while (memofs + len > memlen)
1023 {
1024 memlen *= 2;
1025 LOCK (wrklock);
1026 req->ptr2 = names = realloc (names, memlen);
1027 UNLOCK (wrklock);
1028
1029 if (!names)
1030 break;
1031 }
1032
1033 memcpy (names + memofs, name, len);
1034 memofs += len;
1035 }
1036 }
1037
1038 if (errno)
1039 res = -1;
1040
1041 req->result = res;
1042}
1043
1044/*****************************************************************************/
1045
1046static void *aio_proc (void *thr_arg)
1047{
1048 aio_req req;
1049 struct timespec ts;
1050 worker *self = (worker *)thr_arg;
1051
1052 /* try to distribute timeouts somewhat evenly */
1053 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054 * (1000000000UL / 1024UL);
1055
1056 for (;;)
1057 {
1058 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060 LOCK (reqlock);
1061
1062 for (;;)
1063 {
1064 self->req = req = reqq_shift (&req_queue);
1065
1066 if (req)
1067 break;
1068
1069 ++idle;
1070
1071 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072 == ETIMEDOUT)
1073 {
1074 if (idle > max_idle)
1075 {
1076 --idle;
1077 UNLOCK (reqlock);
1078 LOCK (wrklock);
1079 --started;
1080 UNLOCK (wrklock);
1081 goto quit;
1082 }
1083
1084 /* we are allowed to idle, so do so without any timeout */
1085 pthread_cond_wait (&reqwait, &reqlock);
1086 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087 }
1088
1089 --idle;
1090 }
1091
1092 --nready;
1093
1094 UNLOCK (reqlock);
1095
1096 errno = 0; /* strictly unnecessary */
1097
1098 if (!(req->flags & FLAG_CANCELLED))
1099 switch (req->type)
1100 {
1101 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107 case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108 case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109 case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112 case REQ_CLOSE: req->result = close (req->int1); break;
1113 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122 case REQ_FSYNC: req->result = fsync (req->int1); break;
1123 case REQ_READDIR: scandir_ (req, self); break;
1124
1125 case REQ_BUSY:
1126 {
1127 struct timeval tv;
1128
1129 tv.tv_sec = req->int1;
1130 tv.tv_usec = req->int2;
1131
1132 req->result = select (0, 0, 0, 0, &tv);
1133 }
1134
1135 case REQ_GROUP:
1136 case REQ_NOP:
1137 break;
1138
1139 case REQ_QUIT:
1140 goto quit;
1141
1142 default:
1143 req->result = ENOSYS;
1144 break;
1145 }
1146
1147 req->errorno = errno;
1148
1149 LOCK (reslock);
1150
1151 ++npending;
1152
1153 if (!reqq_push (&res_queue, req))
1154 /* write a dummy byte to the pipe so fh becomes ready */
1155 write (respipe [1], &respipe, 1);
1156
1157 self->req = 0;
1158 worker_clear (self);
1159
1160 UNLOCK (reslock);
1161 }
1162
1163quit:
1164 LOCK (wrklock);
1165 worker_free (self);
1166 UNLOCK (wrklock);
1167
1168 return 0;
1169}
1170
1171/*****************************************************************************/
1172
1173static void atfork_prepare (void)
1174{
1175 LOCK (wrklock);
1176 LOCK (reqlock);
1177 LOCK (reslock);
1178#if !HAVE_PREADWRITE
1179 LOCK (preadwritelock);
1180#endif
1181#if !HAVE_READDIR_R
1182 LOCK (readdirlock);
1183#endif
1184}
1185
1186static void atfork_parent (void)
1187{
1188#if !HAVE_READDIR_R
1189 UNLOCK (readdirlock);
1190#endif
1191#if !HAVE_PREADWRITE
1192 UNLOCK (preadwritelock);
1193#endif
1194 UNLOCK (reslock);
1195 UNLOCK (reqlock);
1196 UNLOCK (wrklock);
1197}
1198
1199static void atfork_child (void)
1200{
1201 aio_req prv;
1202
1203 while (prv = reqq_shift (&req_queue))
1204 req_free (prv);
1205
1206 while (prv = reqq_shift (&res_queue))
1207 req_free (prv);
1208
1209 while (wrk_first.next != &wrk_first)
1210 {
1211 worker *wrk = wrk_first.next;
1212
1213 if (wrk->req)
1214 req_free (wrk->req);
1215
1216 worker_clear (wrk);
1217 worker_free (wrk);
1218 }
1219
1220 started = 0;
1221 idle = 0;
1222 nreqs = 0;
1223 nready = 0;
1224 npending = 0;
1225
1226 close (respipe [0]);
1227 close (respipe [1]);
1228 create_pipe ();
1229
1230 atfork_parent ();
1231}
1232
1233#define dREQ \
1234 aio_req req; \
1235 int req_pri = next_pri; \
1236 next_pri = DEFAULT_PRI + PRI_BIAS; \
1237 \
1238 if (SvOK (callback) && !SvROK (callback)) \
1239 croak ("callback must be undef or of reference type"); \
1240 \
1241 Newz (0, req, 1, aio_cb); \
1242 if (!req) \
1243 croak ("out of memory during aio_req allocation"); \
1244 \
1245 req->callback = newSVsv (callback); \
1246 req->pri = req_pri
1247
1248#define REQ_SEND \
1249 req_send (req); \
1250 \
1251 if (GIMME_V != G_VOID) \
1252 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1253
1254MODULE = IO::AIO PACKAGE = IO::AIO 849MODULE = IO::AIO PACKAGE = IO::AIO
1255 850
1256PROTOTYPES: ENABLE 851PROTOTYPES: ENABLE
1257 852
1258BOOT: 853BOOT:
1259{ 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_eio (SEEK_SET)
962 const_eio (SEEK_CUR)
963 const_eio (SEEK_END)
964
965 const_eio (MCL_FUTURE)
966 const_eio (MCL_CURRENT)
967
968 const_eio (MS_ASYNC)
969 const_eio (MS_INVALIDATE)
970 const_eio (MS_SYNC)
971
972 const_eio (MT_MODIFY)
973
974 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
975 const_eio (SYNC_FILE_RANGE_WRITE)
976 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
977
978 const_eio (FALLOC_FL_KEEP_SIZE)
979
980 const_eio (READDIR_DENTS)
981 const_eio (READDIR_DIRS_FIRST)
982 const_eio (READDIR_STAT_ORDER)
983 const_eio (READDIR_FOUND_UNKNOWN)
984
985 const_eio (DT_UNKNOWN)
986 const_eio (DT_FIFO)
987 const_eio (DT_CHR)
988 const_eio (DT_DIR)
989 const_eio (DT_BLK)
990 const_eio (DT_REG)
991 const_eio (DT_LNK)
992 const_eio (DT_SOCK)
993 const_eio (DT_WHT)
994 };
995
1260 HV *stash = gv_stashpv ("IO::AIO", 1); 996 aio_stash = gv_stashpv ("IO::AIO" , 1);
997 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
998 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
999 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1261 1000
1262 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1001 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1263 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1002 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1264 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268 1003
1269 create_pipe (); 1004 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1270 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1271}
1272 1005
1006 reinit ();
1007}
1008
1273void 1009void
1010reinit ()
1011 PROTOTYPE:
1012
1013void
1274max_poll_reqs (int nreqs) 1014max_poll_reqs (unsigned int nreqs)
1275 PROTOTYPE: $ 1015 PROTOTYPE: $
1276 CODE: 1016 CODE:
1277 max_poll_reqs = nreqs; 1017 eio_set_max_poll_reqs (nreqs);
1278 1018
1279void 1019void
1280max_poll_time (double nseconds) 1020max_poll_time (double nseconds)
1281 PROTOTYPE: $ 1021 PROTOTYPE: $
1282 CODE: 1022 CODE:
1283 max_poll_time = nseconds * AIO_TICKS; 1023 eio_set_max_poll_time (nseconds);
1284 1024
1285void 1025void
1286min_parallel (int nthreads) 1026min_parallel (unsigned int nthreads)
1287 PROTOTYPE: $
1288
1289void
1290max_parallel (int nthreads)
1291 PROTOTYPE: $
1292
1293void
1294max_idle (int nthreads)
1295 PROTOTYPE: $ 1027 PROTOTYPE: $
1296 CODE: 1028 CODE:
1297 set_max_idle (nthreads); 1029 eio_set_min_parallel (nthreads);
1298 1030
1299int 1031void
1300max_outstanding (int maxreqs) 1032max_parallel (unsigned int nthreads)
1301 PROTOTYPE: $ 1033 PROTOTYPE: $
1302 CODE: 1034 CODE:
1303 RETVAL = max_outstanding; 1035 eio_set_max_parallel (nthreads);
1036
1037void
1038max_idle (unsigned int nthreads)
1039 PROTOTYPE: $
1040 CODE:
1041 eio_set_max_idle (nthreads);
1042
1043void
1044idle_timeout (unsigned int seconds)
1045 PROTOTYPE: $
1046 CODE:
1047 eio_set_idle_timeout (seconds);
1048
1049void
1050max_outstanding (unsigned int maxreqs)
1051 PROTOTYPE: $
1052 CODE:
1304 max_outstanding = maxreqs; 1053 max_outstanding = maxreqs;
1305 OUTPUT:
1306 RETVAL
1307 1054
1308void 1055void
1309aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1056aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1310 SV * pathname
1311 int flags
1312 int mode
1313 SV * callback
1314 PROTOTYPE: $$$;$
1315 PPCODE: 1057 PPCODE:
1316{ 1058{
1317 dREQ; 1059 dREQ;
1318 1060
1061 req->type = EIO_WD_OPEN;
1062 req_set_path1 (req, pathname);
1063
1064 REQ_SEND;
1065}
1066
1067void
1068aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1069 PPCODE:
1070{
1071 dREQ;
1072
1319 req->type = REQ_OPEN; 1073 req->type = EIO_OPEN;
1320 req->sv1 = newSVsv (pathname); 1074 req_set_path1 (req, pathname);
1321 req->ptr1 = SvPVbyte_nolen (pathname);
1322 req->int1 = flags; 1075 req->int1 = flags;
1323 req->mode = mode; 1076 req->int2 = mode;
1324 1077
1325 REQ_SEND; 1078 REQ_SEND;
1326} 1079}
1327 1080
1328void 1081void
1329aio_close (fh,callback=&PL_sv_undef) 1082aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330 SV * fh
1331 SV * callback
1332 PROTOTYPE: $;$
1333 ALIAS: 1083 ALIAS:
1334 aio_close = REQ_CLOSE
1335 aio_fsync = REQ_FSYNC 1084 aio_fsync = EIO_FSYNC
1336 aio_fdatasync = REQ_FDATASYNC 1085 aio_fdatasync = EIO_FDATASYNC
1086 aio_syncfs = EIO_SYNCFS
1337 PPCODE: 1087 PPCODE:
1338{ 1088{
1089 int fd = s_fileno_croak (fh, 0);
1339 dREQ; 1090 dREQ;
1340 1091
1341 req->type = ix; 1092 req->type = ix;
1342 req->fh = newSVsv (fh); 1093 req->sv1 = newSVsv (fh);
1343 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1094 req->int1 = fd;
1344 1095
1345 REQ_SEND (req); 1096 REQ_SEND;
1346} 1097}
1347 1098
1348void 1099void
1100aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1101 PPCODE:
1102{
1103 int fd = s_fileno_croak (fh, 0);
1104 dREQ;
1105
1106 req->type = EIO_SYNC_FILE_RANGE;
1107 req->sv1 = newSVsv (fh);
1108 req->int1 = fd;
1109 req->offs = offset;
1110 req->size = nbytes;
1111 req->int2 = flags;
1112
1113 REQ_SEND;
1114}
1115
1116void
1117aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1118 PPCODE:
1119{
1120 int fd = s_fileno_croak (fh, 0);
1121 dREQ;
1122
1123 req->type = EIO_FALLOCATE;
1124 req->sv1 = newSVsv (fh);
1125 req->int1 = fd;
1126 req->int2 = mode;
1127 req->offs = offset;
1128 req->size = len;
1129
1130 REQ_SEND;
1131}
1132
1133void
1134aio_close (SV *fh, SV *callback=&PL_sv_undef)
1135 PPCODE:
1136{
1137 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1138 int fd = s_fileno_croak (fh, 0);
1139 dREQ;
1140
1141 if (expect_false (close_fd < 0))
1142 {
1143 int pipefd [2];
1144
1145 if (
1146#ifdef _WIN32
1147 _pipe (pipefd, 1, _O_BINARY) < 0
1148#else
1149 pipe (pipefd) < 0
1150 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1151#endif
1152 || close (pipefd [1]) < 0
1153 )
1154 abort (); /*D*/
1155
1156 close_fd = pipefd [0];
1157 }
1158
1159 req->type = EIO_DUP2;
1160 req->int1 = close_fd;
1161 req->sv2 = newSVsv (fh);
1162 req->int2 = fd;
1163
1164 REQ_SEND;
1165}
1166
1167void
1168aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1169 PPCODE:
1170{
1171 int fd = s_fileno_croak (fh, 0);
1172 dREQ;
1173
1174 req->type = EIO_SEEK;
1175 req->sv1 = newSVsv (fh);
1176 req->int1 = fd;
1177 req->offs = SvVAL64 (offset);
1178 req->int2 = whence;
1179
1180 REQ_SEND;
1181}
1182
1183void
1349aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1184aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350 SV * fh
1351 UV offset
1352 UV length
1353 SV * data
1354 UV dataoffset
1355 SV * callback
1356 ALIAS: 1185 ALIAS:
1357 aio_read = REQ_READ 1186 aio_read = EIO_READ
1358 aio_write = REQ_WRITE 1187 aio_write = EIO_WRITE
1359 PROTOTYPE: $$$$$;$
1360 PPCODE: 1188 PPCODE:
1361{ 1189{
1362 STRLEN svlen; 1190 STRLEN svlen;
1191 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363 char *svptr = SvPVbyte (data, svlen); 1192 char *svptr = SvPVbyte (data, svlen);
1364 1193 UV len = SvUV (length);
1365 SvUPGRADE (data, SVt_PV);
1366 SvPOK_on (data);
1367 1194
1368 if (dataoffset < 0) 1195 if (dataoffset < 0)
1369 dataoffset += svlen; 1196 dataoffset += svlen;
1370 1197
1371 if (dataoffset < 0 || dataoffset > svlen) 1198 if (dataoffset < 0 || dataoffset > svlen)
1372 croak ("data offset outside of string"); 1199 croak ("dataoffset outside of data scalar");
1373 1200
1374 if (ix == REQ_WRITE) 1201 if (ix == EIO_WRITE)
1375 { 1202 {
1376 /* write: check length and adjust. */ 1203 /* write: check length and adjust. */
1377 if (length < 0 || length + dataoffset > svlen) 1204 if (!SvOK (length) || len + dataoffset > svlen)
1378 length = svlen - dataoffset; 1205 len = svlen - dataoffset;
1379 } 1206 }
1380 else 1207 else
1381 { 1208 {
1382 /* read: grow scalar as necessary */ 1209 /* read: check type and grow scalar as necessary */
1210 SvUPGRADE (data, SVt_PV);
1383 svptr = SvGROW (data, length + dataoffset); 1211 svptr = SvGROW (data, len + dataoffset + 1);
1384 } 1212 }
1385
1386 if (length < 0)
1387 croak ("length must not be negative");
1388 1213
1389 { 1214 {
1390 dREQ; 1215 dREQ;
1391 1216
1392 req->type = ix; 1217 req->type = ix;
1393 req->fh = newSVsv (fh); 1218 req->sv1 = newSVsv (fh);
1394 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1219 req->int1 = fd;
1395 : IoOFP (sv_2io (fh))); 1220 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396 req->offs = offset;
1397 req->size = length; 1221 req->size = len;
1398 req->sv1 = SvREFCNT_inc (data); 1222 req->sv2 = SvREFCNT_inc (data);
1399 req->ptr1 = (char *)svptr + dataoffset; 1223 req->ptr2 = (char *)svptr + dataoffset;
1400 req->stroffset = dataoffset; 1224 req->stroffset = dataoffset;
1401 1225
1402 if (!SvREADONLY (data)) 1226 if (!SvREADONLY (data))
1403 { 1227 {
1404 SvREADONLY_on (data); 1228 SvREADONLY_on (data);
1405 req->flags |= FLAG_DATA_RO_OFF; 1229 req->flags |= FLAG_SV2_RO_OFF;
1406 } 1230 }
1407 1231
1408 REQ_SEND; 1232 REQ_SEND;
1409 } 1233 }
1410} 1234}
1411 1235
1412void 1236void
1413aio_readlink (path,callback=&PL_sv_undef) 1237aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414 SV * path 1238 ALIAS:
1415 SV * callback 1239 aio_readlink = EIO_READLINK
1416 PROTOTYPE: $$;$ 1240 aio_realpath = EIO_REALPATH
1417 PPCODE: 1241 PPCODE:
1418{ 1242{
1419 SV *data;
1420 dREQ; 1243 dREQ;
1421 1244
1422 data = newSV (NAME_MAX);
1423 SvPOK_on (data);
1424
1425 req->type = REQ_READLINK; 1245 req->type = ix;
1426 req->fh = newSVsv (path); 1246 req_set_path1 (req, pathname);
1427 req->ptr2 = SvPVbyte_nolen (path);
1428 req->sv1 = data;
1429 req->ptr1 = SvPVbyte_nolen (data);
1430 1247
1431 REQ_SEND; 1248 REQ_SEND;
1432} 1249}
1433 1250
1434void 1251void
1435aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1252aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1436 SV * out_fh
1437 SV * in_fh
1438 UV in_offset
1439 UV length
1440 SV * callback
1441 PROTOTYPE: $$$$;$
1442 PPCODE: 1253 PPCODE:
1443{ 1254{
1255 int ifd = s_fileno_croak (in_fh , 0);
1256 int ofd = s_fileno_croak (out_fh, 1);
1444 dREQ; 1257 dREQ;
1445 1258
1446 req->type = REQ_SENDFILE; 1259 req->type = EIO_SENDFILE;
1447 req->fh = newSVsv (out_fh); 1260 req->sv1 = newSVsv (out_fh);
1448 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1261 req->int1 = ofd;
1449 req->sv2 = newSVsv (in_fh); 1262 req->sv2 = newSVsv (in_fh);
1450 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1263 req->int2 = ifd;
1451 req->offs = in_offset; 1264 req->offs = in_offset;
1452 req->size = length; 1265 req->size = length;
1453 1266
1454 REQ_SEND; 1267 REQ_SEND;
1455} 1268}
1456 1269
1457void 1270void
1458aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1271aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1459 SV * fh
1460 UV offset
1461 IV length
1462 SV * callback
1463 PROTOTYPE: $$$;$
1464 PPCODE: 1272 PPCODE:
1465{ 1273{
1274 int fd = s_fileno_croak (fh, 0);
1466 dREQ; 1275 dREQ;
1467 1276
1468 req->type = REQ_READAHEAD; 1277 req->type = EIO_READAHEAD;
1469 req->fh = newSVsv (fh); 1278 req->sv1 = newSVsv (fh);
1470 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1279 req->int1 = fd;
1471 req->offs = offset; 1280 req->offs = offset;
1472 req->size = length; 1281 req->size = length;
1473 1282
1474 REQ_SEND; 1283 REQ_SEND;
1475} 1284}
1476 1285
1477void 1286void
1478aio_stat (fh_or_path,callback=&PL_sv_undef) 1287aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479 SV * fh_or_path
1480 SV * callback
1481 ALIAS: 1288 ALIAS:
1482 aio_stat = REQ_STAT 1289 aio_stat = EIO_STAT
1483 aio_lstat = REQ_LSTAT 1290 aio_lstat = EIO_LSTAT
1291 aio_statvfs = EIO_STATVFS
1484 PPCODE: 1292 PPCODE:
1485{ 1293{
1486 dREQ; 1294 dREQ;
1487 1295
1488 New (0, req->statdata, 1, Stat_t); 1296 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1489 if (!req->statdata)
1490 {
1491 req_free (req);
1492 croak ("out of memory during aio_req->statdata allocation");
1493 }
1494
1495 if (SvPOK (fh_or_path))
1496 {
1497 req->type = ix;
1498 req->sv1 = newSVsv (fh_or_path);
1499 req->ptr1 = SvPVbyte_nolen (fh_or_path);
1500 }
1501 else
1502 {
1503 req->type = REQ_FSTAT;
1504 req->fh = newSVsv (fh_or_path);
1505 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506 }
1507 1297
1508 REQ_SEND; 1298 REQ_SEND;
1509} 1299}
1510 1300
1301UV
1302major (UV dev)
1303 ALIAS:
1304 minor = 1
1305 CODE:
1306 RETVAL = ix ? major (dev) : minor (dev);
1307 OUTPUT:
1308 RETVAL
1309
1310UV
1311makedev (UV maj, UV min)
1312 CODE:
1313 RETVAL = makedev (maj, min);
1314 OUTPUT:
1315 RETVAL
1316
1511void 1317void
1318aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1319 PPCODE:
1320{
1321 dREQ;
1322
1323 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1324 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1325 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1326
1327 REQ_SEND;
1328}
1329
1330void
1331aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1332 PPCODE:
1333{
1334 dREQ;
1335
1336 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1337 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1338
1339 REQ_SEND;
1340}
1341
1342void
1343aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1344 PPCODE:
1345{
1346 dREQ;
1347
1348 req->int2 = mode;
1349 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1350
1351 REQ_SEND;
1352}
1353
1354void
1355aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1356 PPCODE:
1357{
1358 dREQ;
1359
1360 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1361 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1362 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1363
1364 REQ_SEND;
1365}
1366
1367void
1368aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1369 PPCODE:
1370{
1371 dREQ;
1372
1373 req->type = EIO_READDIR;
1374 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1375
1376 if (flags & EIO_READDIR_DENTS)
1377 req->int1 |= EIO_READDIR_CUSTOM2;
1378
1379 req_set_path1 (req, pathname);
1380
1381 REQ_SEND;
1382}
1383
1384void
1385aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1386 PPCODE:
1387{
1388 dREQ;
1389
1390 req->type = EIO_MKDIR;
1391 req->int2 = mode;
1392 req_set_path1 (req, pathname);
1393
1394 REQ_SEND;
1395}
1396
1397void
1512aio_unlink (pathname,callback=&PL_sv_undef) 1398aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513 SV * pathname
1514 SV * callback
1515 ALIAS: 1399 ALIAS:
1516 aio_unlink = REQ_UNLINK 1400 aio_unlink = EIO_UNLINK
1517 aio_rmdir = REQ_RMDIR 1401 aio_rmdir = EIO_RMDIR
1518 aio_readdir = REQ_READDIR 1402 aio_readdir = EIO_READDIR
1519 PPCODE: 1403 PPCODE:
1520{ 1404{
1521 dREQ; 1405 dREQ;
1522 1406
1523 req->type = ix; 1407 req->type = ix;
1524 req->sv1 = newSVsv (pathname); 1408 req_set_path1 (req, pathname);
1525 req->ptr1 = SvPVbyte_nolen (pathname); 1409
1526
1527 REQ_SEND; 1410 REQ_SEND;
1528} 1411}
1529 1412
1530void 1413void
1531aio_link (oldpath,newpath,callback=&PL_sv_undef) 1414aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532 SV * oldpath
1533 SV * newpath
1534 SV * callback
1535 ALIAS: 1415 ALIAS:
1536 aio_link = REQ_LINK 1416 aio_link = EIO_LINK
1537 aio_symlink = REQ_SYMLINK 1417 aio_symlink = EIO_SYMLINK
1538 aio_rename = REQ_RENAME 1418 aio_rename = EIO_RENAME
1539 PPCODE: 1419 PPCODE:
1540{ 1420{
1421 eio_wd wd2 = 0;
1541 dREQ; 1422 dREQ;
1542 1423
1543 req->type = ix; 1424 req->type = ix;
1544 req->fh = newSVsv (oldpath); 1425 req_set_path1 (req, oldpath);
1545 req->ptr2 = SvPVbyte_nolen (req->fh); 1426 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1546 req->sv1 = newSVsv (newpath); 1427 req->int3 = (long)wd2;
1547 req->ptr1 = SvPVbyte_nolen (newpath);
1548 1428
1549 REQ_SEND; 1429 REQ_SEND;
1550} 1430}
1551 1431
1552void 1432void
1553aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1433aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554 SV * pathname
1555 SV * callback
1556 UV mode
1557 UV dev
1558 PPCODE: 1434 PPCODE:
1559{ 1435{
1560 dREQ; 1436 dREQ;
1561 1437
1562 req->type = REQ_MKNOD; 1438 req->type = EIO_MKNOD;
1563 req->sv1 = newSVsv (pathname);
1564 req->ptr1 = SvPVbyte_nolen (pathname);
1565 req->mode = (mode_t)mode; 1439 req->int2 = (mode_t)mode;
1566 req->offs = dev; 1440 req->offs = dev;
1441 req_set_path1 (req, pathname);
1567 1442
1568 REQ_SEND; 1443 REQ_SEND;
1569} 1444}
1570 1445
1571void 1446void
1447aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1448 ALIAS:
1449 aio_mtouch = EIO_MTOUCH
1450 aio_msync = EIO_MSYNC
1451 PPCODE:
1452{
1453 STRLEN svlen;
1454 char *svptr = SvPVbyte (data, svlen);
1455 UV len = SvUV (length);
1456
1457 if (offset < 0)
1458 offset += svlen;
1459
1460 if (offset < 0 || offset > svlen)
1461 croak ("offset outside of scalar");
1462
1463 if (!SvOK (length) || len + offset > svlen)
1464 len = svlen - offset;
1465
1466 {
1467 dREQ;
1468
1469 req->type = ix;
1470 req->sv2 = SvREFCNT_inc (data);
1471 req->ptr2 = (char *)svptr + offset;
1472 req->size = len;
1473 req->int1 = flags;
1474
1475 REQ_SEND;
1476 }
1477}
1478
1479void
1480aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1481 PPCODE:
1482{
1483 STRLEN svlen;
1484 char *svptr = SvPVbyte (data, svlen);
1485 UV len = SvUV (length);
1486
1487 if (offset < 0)
1488 offset += svlen;
1489
1490 if (offset < 0 || offset > svlen)
1491 croak ("offset outside of scalar");
1492
1493 if (!SvOK (length) || len + offset > svlen)
1494 len = svlen - offset;
1495
1496 {
1497 dREQ;
1498
1499 req->type = EIO_MLOCK;
1500 req->sv2 = SvREFCNT_inc (data);
1501 req->ptr2 = (char *)svptr + offset;
1502 req->size = len;
1503
1504 REQ_SEND;
1505 }
1506}
1507
1508void
1509aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1510 PPCODE:
1511{
1512 dREQ;
1513
1514 req->type = EIO_MLOCKALL;
1515 req->int1 = flags;
1516
1517 REQ_SEND;
1518}
1519
1520void
1521aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1522 PPCODE:
1523{
1524 int fd = s_fileno_croak (fh, 0);
1525 dREQ;
1526
1527 req->type = EIO_CUSTOM;
1528 req->sv1 = newSVsv (fh);
1529 req->int1 = fd;
1530
1531 req->feed = fiemap;
1532#if HAVE_FIEMAP
1533 /* keep our fingers crossed that the next two types are 64 bit */
1534 req->offs = start;
1535 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1536 req->int2 = flags;
1537 req->int3 = SvOK (count) ? SvIV (count) : -1;
1538#endif
1539
1540 REQ_SEND;
1541}
1542
1543void
1572aio_busy (delay,callback=&PL_sv_undef) 1544aio_busy (double delay, SV *callback=&PL_sv_undef)
1573 double delay
1574 SV * callback
1575 PPCODE: 1545 PPCODE:
1576{ 1546{
1577 dREQ; 1547 dREQ;
1578 1548
1579 req->type = REQ_BUSY; 1549 req->type = EIO_BUSY;
1580 req->int1 = delay < 0. ? 0 : delay; 1550 req->nv1 = delay < 0. ? 0. : delay;
1581 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582 1551
1583 REQ_SEND; 1552 REQ_SEND;
1584} 1553}
1585 1554
1586void 1555void
1587aio_group (callback=&PL_sv_undef) 1556aio_group (SV *callback=&PL_sv_undef)
1588 SV * callback
1589 PROTOTYPE: ;$
1590 PPCODE: 1557 PPCODE:
1591{ 1558{
1592 dREQ; 1559 dREQ;
1593 1560
1594 req->type = REQ_GROUP; 1561 req->type = EIO_GROUP;
1595 1562
1596 req_send (req); 1563 req_submit (req);
1597 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1564 XPUSHs (req_sv (req, aio_grp_stash));
1598} 1565}
1599 1566
1600void 1567void
1601aio_nop (callback=&PL_sv_undef) 1568aio_nop (SV *callback=&PL_sv_undef)
1602 SV * callback 1569 ALIAS:
1570 aio_nop = EIO_NOP
1571 aio_sync = EIO_SYNC
1603 PPCODE: 1572 PPCODE:
1604{ 1573{
1605 dREQ; 1574 dREQ;
1606 1575
1607 req->type = REQ_NOP; 1576 req->type = ix;
1608 1577
1609 REQ_SEND; 1578 REQ_SEND;
1610} 1579}
1611 1580
1612int 1581int
1613aioreq_pri (int pri = 0) 1582aioreq_pri (int pri = 0)
1614 PROTOTYPE: ;$
1615 CODE: 1583 CODE:
1616 RETVAL = next_pri - PRI_BIAS; 1584 RETVAL = next_pri;
1617 if (items > 0) 1585 if (items > 0)
1618 { 1586 {
1619 if (pri < PRI_MIN) pri = PRI_MIN; 1587 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620 if (pri > PRI_MAX) pri = PRI_MAX; 1588 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621 next_pri = pri + PRI_BIAS; 1589 next_pri = pri;
1622 } 1590 }
1623 OUTPUT: 1591 OUTPUT:
1624 RETVAL 1592 RETVAL
1625 1593
1626void 1594void
1627aioreq_nice (int nice = 0) 1595aioreq_nice (int nice = 0)
1628 CODE: 1596 CODE:
1629 nice = next_pri - nice; 1597 nice = next_pri - nice;
1630 if (nice < PRI_MIN) nice = PRI_MIN; 1598 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631 if (nice > PRI_MAX) nice = PRI_MAX; 1599 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632 next_pri = nice + PRI_BIAS; 1600 next_pri = nice;
1633 1601
1634void 1602void
1635flush () 1603flush ()
1636 PROTOTYPE:
1637 CODE: 1604 CODE:
1638 while (nreqs) 1605 while (eio_nreqs ())
1639 { 1606 {
1640 poll_wait (); 1607 poll_wait ();
1641 poll_cb (0); 1608 poll_cb ();
1642 } 1609 }
1643 1610
1644void 1611int
1645poll() 1612poll ()
1646 PROTOTYPE:
1647 CODE: 1613 CODE:
1648 if (nreqs)
1649 {
1650 poll_wait (); 1614 poll_wait ();
1651 poll_cb (0); 1615 RETVAL = poll_cb ();
1652 }
1653
1654int
1655poll_fileno()
1656 PROTOTYPE:
1657 CODE:
1658 RETVAL = respipe [0];
1659 OUTPUT: 1616 OUTPUT:
1660 RETVAL 1617 RETVAL
1661 1618
1662int 1619int
1620poll_fileno ()
1621 CODE:
1622 RETVAL = s_epipe_fd (&respipe);
1623 OUTPUT:
1624 RETVAL
1625
1626int
1663poll_cb(...) 1627poll_cb (...)
1664 PROTOTYPE: 1628 PROTOTYPE:
1665 CODE: 1629 CODE:
1666 RETVAL = poll_cb (); 1630 RETVAL = poll_cb ();
1667 OUTPUT: 1631 OUTPUT:
1668 RETVAL 1632 RETVAL
1669 1633
1670void 1634void
1671poll_wait() 1635poll_wait ()
1672 PROTOTYPE:
1673 CODE: 1636 CODE:
1674 if (nreqs)
1675 poll_wait (); 1637 poll_wait ();
1676 1638
1677int 1639int
1678nreqs() 1640nreqs ()
1679 PROTOTYPE:
1680 CODE: 1641 CODE:
1681 RETVAL = nreqs; 1642 RETVAL = eio_nreqs ();
1682 OUTPUT: 1643 OUTPUT:
1683 RETVAL 1644 RETVAL
1684 1645
1685int 1646int
1686nready() 1647nready ()
1687 PROTOTYPE:
1688 CODE: 1648 CODE:
1689 RETVAL = get_nready (); 1649 RETVAL = eio_nready ();
1690 OUTPUT: 1650 OUTPUT:
1691 RETVAL 1651 RETVAL
1692 1652
1693int 1653int
1694npending() 1654npending ()
1695 PROTOTYPE:
1696 CODE: 1655 CODE:
1697 RETVAL = get_npending (); 1656 RETVAL = eio_npending ();
1698 OUTPUT: 1657 OUTPUT:
1699 RETVAL 1658 RETVAL
1700 1659
1701int 1660int
1702nthreads() 1661nthreads ()
1703 PROTOTYPE:
1704 CODE: 1662 CODE:
1705 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1663 RETVAL = eio_nthreads ();
1706 RETVAL = started;
1707 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708 OUTPUT: 1664 OUTPUT:
1709 RETVAL 1665 RETVAL
1710 1666
1667int
1668fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1669 CODE:
1670 RETVAL = posix_fadvise (fh, offset, length, advice);
1671 OUTPUT:
1672 RETVAL
1673
1674IV
1675sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1676 CODE:
1677 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1678 OUTPUT:
1679 RETVAL
1680
1681void
1682mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
1683 PPCODE:
1684 sv_unmagic (scalar, MMAP_MAGIC);
1685{
1686 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1687 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1688 if (addr == (void *)-1)
1689 XSRETURN_NO;
1690
1691 sv_force_normal (scalar);
1692
1693 /* we store the length in mg_obj, as namlen is I32 :/ */
1694 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1695 ->mg_obj = (SV *)length;
1696
1697 SvUPGRADE (scalar, SVt_PV); /* nop... */
1698
1699 if (!(prot & PROT_WRITE))
1700 SvREADONLY_on (scalar);
1701
1702 if (SvLEN (scalar))
1703 Safefree (SvPVX (scalar));
1704
1705 SvPVX (scalar) = (char *)addr;
1706 SvCUR_set (scalar, length);
1707 SvLEN_set (scalar, 0);
1708 SvPOK_only (scalar);
1709
1710 XSRETURN_YES;
1711}
1712
1713void
1714munmap (SV *scalar)
1715 CODE:
1716 sv_unmagic (scalar, MMAP_MAGIC);
1717
1718int
1719madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1720 ALIAS:
1721 mprotect = 1
1722 CODE:
1723{
1724 STRLEN svlen;
1725 void *addr = SvPVbyte (scalar, svlen);
1726 size_t len = SvUV (length);
1727
1728 if (offset < 0)
1729 offset += svlen;
1730
1731 if (offset < 0 || offset > svlen)
1732 croak ("offset outside of scalar");
1733
1734 if (!SvOK (length) || len + offset > svlen)
1735 len = svlen - offset;
1736
1737 addr = (void *)(((intptr_t)addr) + offset);
1738 eio_page_align (&addr, &len);
1739
1740 switch (ix)
1741 {
1742 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1743 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1744 }
1745}
1746 OUTPUT:
1747 RETVAL
1748
1749int
1750munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1751 CODE:
1752{
1753 STRLEN svlen;
1754 void *addr = SvPVbyte (scalar, svlen);
1755 size_t len = SvUV (length);
1756
1757 if (offset < 0)
1758 offset += svlen;
1759
1760 if (offset < 0 || offset > svlen)
1761 croak ("offset outside of scalar");
1762
1763 if (!SvOK (length) || len + offset > svlen)
1764 len = svlen - offset;
1765
1766 addr = (void *)(((intptr_t)addr) + offset);
1767 eio_page_align (&addr, &len);
1768#if _POSIX_MEMLOCK_RANGE
1769 RETVAL = munlock (addr, len);
1770#else
1771 RETVAL = ((errno = ENOSYS), -1);
1772#endif
1773}
1774 OUTPUT:
1775 RETVAL
1776
1777int
1778munlockall ()
1779 CODE:
1780#if _POSIX_MEMLOCK
1781 munlockall ();
1782#else
1783 RETVAL = -1;
1784 errno = ENOSYS;
1785#endif
1786 OUTPUT:
1787 RETVAL
1788
1789void _on_next_submit (SV *cb)
1790 CODE:
1791 SvREFCNT_dec (on_next_submit);
1792 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1793
1711PROTOTYPES: DISABLE 1794PROTOTYPES: DISABLE
1795
1796MODULE = IO::AIO PACKAGE = IO::AIO::WD
1797
1798BOOT:
1799{
1800 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1801 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1802}
1803
1804void
1805DESTROY (SV *self)
1806 CODE:
1807{
1808 aio_wd wd = SvAIO_WD (self);
1809#if HAVE_AT
1810 {
1811 SV *callback = &PL_sv_undef;
1812 dREQ; /* clobbers next_pri :/ */
1813 next_pri = req->pri; /* restore next_pri */
1814 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1815 req->type = EIO_WD_CLOSE;
1816 req->wd = wd;
1817 REQ_SEND;
1818 }
1819#else
1820 eio_wd_close_sync (wd);
1821#endif
1822}
1712 1823
1713MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1824MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714 1825
1715void 1826void
1716cancel (aio_req_ornot req) 1827cancel (aio_req_ornot req)
1717 CODE: 1828 CODE:
1718 req_cancel (req); 1829 eio_cancel (req);
1719 1830
1720void 1831void
1721cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1832cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722 CODE: 1833 PPCODE:
1834{
1835 if (GIMME_V != G_VOID)
1836 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1837
1838 if (items > 1)
1839 {
1840 SV *cb_cv =get_cb (callback);
1841
1723 SvREFCNT_dec (req->callback); 1842 SvREFCNT_dec (req->callback);
1724 req->callback = newSVsv (callback); 1843 req->callback = SvREFCNT_inc (cb_cv);
1844 }
1845}
1725 1846
1726MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1847MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727 1848
1728void 1849void
1729add (aio_req grp, ...) 1850add (aio_req grp, ...)
1730 PPCODE: 1851 PPCODE:
1731{ 1852{
1732 int i; 1853 int i;
1733 aio_req req;
1734 1854
1735 if (grp->int1 == 2) 1855 if (grp->int1 == 2)
1736 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1856 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737 1857
1738 for (i = 1; i < items; ++i ) 1858 for (i = 1; i < items; ++i )
1739 { 1859 {
1860 aio_req req;
1861
1740 if (GIMME_V != G_VOID) 1862 if (GIMME_V != G_VOID)
1741 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1863 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742 1864
1743 req = SvAIO_REQ (ST (i)); 1865 req = SvAIO_REQ (ST (i));
1744 1866
1745 if (req) 1867 if (req)
1746 { 1868 eio_grp_add (grp, req);
1747 ++grp->size;
1748 req->grp = grp;
1749
1750 req->grp_prev = 0;
1751 req->grp_next = grp->grp_first;
1752
1753 if (grp->grp_first)
1754 grp->grp_first->grp_prev = req;
1755
1756 grp->grp_first = req;
1757 }
1758 } 1869 }
1759} 1870}
1760 1871
1761void 1872void
1762cancel_subs (aio_req_ornot req) 1873cancel_subs (aio_req_ornot req)
… …
1771 AV *av; 1882 AV *av;
1772 1883
1773 grp->errorno = errno; 1884 grp->errorno = errno;
1774 1885
1775 av = newAV (); 1886 av = newAV ();
1887 av_extend (av, items - 1);
1776 1888
1777 for (i = 1; i < items; ++i ) 1889 for (i = 1; i < items; ++i )
1778 av_push (av, newSVsv (ST (i))); 1890 av_push (av, newSVsv (ST (i)));
1779 1891
1780 SvREFCNT_dec (grp->sv1); 1892 SvREFCNT_dec (grp->sv1);
… …
1787 grp->errorno = errorno; 1899 grp->errorno = errorno;
1788 1900
1789void 1901void
1790limit (aio_req grp, int limit) 1902limit (aio_req grp, int limit)
1791 CODE: 1903 CODE:
1792 grp->int2 = limit; 1904 eio_grp_limit (grp, limit);
1793 aio_grp_feed (grp);
1794 1905
1795void 1906void
1796feed (aio_req grp, SV *callback=&PL_sv_undef) 1907feed (aio_req grp, SV *callback=&PL_sv_undef)
1797 CODE: 1908 CODE:
1798{ 1909{
1799 SvREFCNT_dec (grp->sv2); 1910 SvREFCNT_dec (grp->sv2);
1800 grp->sv2 = newSVsv (callback); 1911 grp->sv2 = newSVsv (callback);
1912 grp->feed = aio_grp_feed;
1801 1913
1802 if (grp->int2 <= 0) 1914 if (grp->int2 <= 0)
1803 grp->int2 = 2; 1915 grp->int2 = 2;
1804 1916
1805 aio_grp_feed (grp); 1917 eio_grp_limit (grp, grp->int2);
1806} 1918}
1807 1919

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