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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 2006 UTC vs.
Revision 1.222 by root, Fri Aug 24 15:33:40 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
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
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 150#endif
151#ifndef major
152# define major(dev) ((dev) >> 8)
79#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
80 157
81/* buffer size for various temporary buffers */ 158#ifndef PAGESIZE
82#define AIO_BUFSIZE 65536 159# define PAGESIZE sysconf (_SC_PAGESIZE)
160#endif
83 161
84#define dBUF \ 162/*****************************************************************************/
85 char *aio_buf; \ 163
86 LOCK (wrklock); \ 164static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 165fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 166{
89 if (!aio_buf) \ 167 req->result = -1;
168
169#if HAVE_FIEMAP
170 /* assume some c99 */
171 struct fiemap *fiemap = 0;
172 size_t end_offset;
173 int count = req->int3;
174
175 req->flags |= EIO_FLAG_PTR1_FREE;
176
177 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
178 /* increase in 3.5kb steps */
179 if (count < 0)
180 count = 8;
181
182 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
183 errno = ENOMEM;
184 if (!fiemap)
90 return -1; 185 return;
91 186
92typedef SV SV8; /* byte-sv, used for argument-checking */ 187 req->ptr1 = fiemap;
93 188
94enum { 189 fiemap->fm_start = req->offs;
95 REQ_QUIT, 190 fiemap->fm_length = req->size;
96 REQ_OPEN, REQ_CLOSE, 191 fiemap->fm_flags = req->int2;
97 REQ_READ, REQ_WRITE, REQ_READAHEAD, 192 fiemap->fm_extent_count = count;
98 REQ_SENDFILE,
99 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100 REQ_FSYNC, REQ_FDATASYNC,
101 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102 REQ_MKNOD, REQ_READDIR,
103 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104 REQ_GROUP, REQ_NOP,
105 REQ_BUSY,
106};
107 193
108#define AIO_REQ_KLASS "IO::AIO::REQ" 194 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
109#define AIO_GRP_KLASS "IO::AIO::GRP" 195 return;
110 196
111typedef struct aio_cb 197 if (req->int3 >= 0 /* not autosizing */
112{ 198 || !fiemap->fm_mapped_extents /* no more extents */
113 struct aio_cb *volatile next; 199 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
200 goto done;
114 201
115 SV *callback, *fh; 202 /* else we have to loop -
116 SV *sv1, *sv2; 203 * it would be tempting (atcually I tried that first) to just query the
117 void *ptr1, *ptr2; 204 * number of extents needed, but linux often feels like not returning all
118 off_t offs; 205 * extents, without telling us it left any out. this complicates
119 size_t size; 206 * this quite a bit.
120 ssize_t result; 207 */
121 208
122 STRLEN stroffset; 209 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
123 int type;
124 int int1, int2;
125 int errorno;
126 mode_t mode; /* open */
127 210
128 unsigned char flags; 211 for (;;)
129 unsigned char pri;
130
131 SV *self; /* the perl counterpart of this request, if any */
132 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133} aio_cb;
134
135enum {
136 FLAG_CANCELLED = 0x01, /* request was cancelled */
137 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139};
140
141typedef aio_cb *aio_req;
142typedef aio_cb *aio_req_ornot;
143
144enum {
145 PRI_MIN = -4,
146 PRI_MAX = 4,
147
148 DEFAULT_PRI = 0,
149 PRI_BIAS = -PRI_MIN,
150 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151};
152
153#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155static unsigned int max_poll_time = 0;
156static unsigned int max_poll_reqs = 0;
157
158/* calculcate time difference in ~1/AIO_TICKS of a second */
159static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160{
161 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
163}
164
165static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167static unsigned int started, idle, wanted;
168
169#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171#else
172# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173#endif
174
175#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178/* worker threads management */
179static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181typedef struct worker {
182 /* locked by wrklock */
183 struct worker *prev, *next;
184
185 pthread_t tid;
186
187 /* locked by reslock, reqlock or wrklock */
188 aio_req req; /* currently processed request */
189 void *dbuf;
190 DIR *dirp;
191} worker;
192
193static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195static void worker_clear (worker *wrk)
196{
197 if (wrk->dirp)
198 { 212 {
199 closedir (wrk->dirp); 213 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
200 wrk->dirp = 0; 214 char scratch[3072];
201 } 215 struct fiemap *incmap = (struct fiemap *)scratch;
202 216
203 if (wrk->dbuf) 217 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 218 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 219 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 220 incmap->fm_flags = fiemap->fm_flags;
207 } 221 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 222
210static void worker_free (worker *wrk) 223 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap))
211{
212 wrk->next->prev = wrk->prev;
213 wrk->prev->next = wrk->next;
214
215 free (wrk);
216}
217
218static volatile unsigned int nreqs, nready, npending;
219static volatile unsigned int max_idle = 4;
220static volatile unsigned int max_outstanding = 0xffffffff;
221static int respipe [2];
222
223static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227#if WORDACCESS_UNSAFE
228
229static unsigned int get_nready ()
230{
231 unsigned int retval;
232
233 LOCK (reqlock);
234 retval = nready;
235 UNLOCK (reqlock);
236
237 return retval;
238}
239
240static unsigned int get_npending ()
241{
242 unsigned int retval;
243
244 LOCK (reslock);
245 retval = npending;
246 UNLOCK (reslock);
247
248 return retval;
249}
250
251static unsigned int get_nthreads ()
252{
253 unsigned int retval;
254
255 LOCK (wrklock);
256 retval = started;
257 UNLOCK (wrklock);
258
259 return retval;
260}
261
262#else
263
264# define get_nready() nready
265# define get_npending() npending
266# define get_nthreads() started
267
268#endif
269
270/*
271 * a somewhat faster data structure might be nice, but
272 * with 8 priorities this actually needs <20 insns
273 * per shift, the most expensive operation.
274 */
275typedef struct {
276 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277 int size;
278} reqq;
279
280static reqq req_queue;
281static reqq res_queue;
282
283int reqq_push (reqq *q, aio_req req)
284{
285 int pri = req->pri;
286 req->next = 0;
287
288 if (q->qe[pri])
289 {
290 q->qe[pri]->next = req;
291 q->qe[pri] = req;
292 }
293 else
294 q->qe[pri] = q->qs[pri] = req;
295
296 return q->size++;
297}
298
299aio_req reqq_shift (reqq *q)
300{
301 int pri;
302
303 if (!q->size)
304 return 0; 224 return;
305 225
306 --q->size; 226 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
307 227 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
308 for (pri = NUM_PRI; pri--; ) 228 errno = ENOMEM;
309 {
310 aio_req req = q->qs[pri];
311
312 if (req) 229 if (!fiemap)
230 return;
231
232 req->ptr1 = fiemap;
233
234 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 235 {
314 if (!(q->qs[pri] = req->next)) 236 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 237
317 return req; 238 if (e->fe_logical + e->fe_length >= end_offset)
239 goto done;
240
241 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
242
243 if (e->fe_flags & FIEMAP_EXTENT_LAST)
244 goto done;
245
318 } 246 }
319 } 247 }
320 248
321 abort (); 249done:
322} 250 req->result = 0;
323 251
324static int poll_cb (); 252#else
325static void req_invoke (aio_req req); 253 errno = ENOSYS;
254#endif
255}
256
257/*****************************************************************************/
258
259enum {
260 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
261};
262
263typedef eio_req *aio_req;
264typedef eio_req *aio_req_ornot;
265typedef eio_wd aio_wd;
266
267static SV *on_next_submit;
268static int next_pri = EIO_PRI_DEFAULT;
269static int max_outstanding;
270
271static s_epipe respipe;
272
326static void req_free (aio_req req); 273static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 274static void req_cancel (aio_req req);
328 275
276static void
277want_poll (void)
278{
279 /* write a dummy byte to the pipe so fh becomes ready */
280 s_epipe_signal (&respipe);
281}
282
283static void
284done_poll (void)
285{
286 /* read any signals sent by the worker threads */
287 s_epipe_drain (&respipe);
288}
289
329/* must be called at most once */ 290/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 291static SV *
292req_sv (aio_req req, HV *stash)
331{ 293{
332 if (!req->self) 294 if (!req->self)
333 { 295 {
334 req->self = (SV *)newHV (); 296 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 297 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 298 }
337 299
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 300 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 301}
340 302
341static aio_req SvAIO_REQ (SV *sv) 303static SV *
304newSVaio_wd (aio_wd wd)
305{
306 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
307}
308
309static aio_req
310SvAIO_REQ (SV *sv)
342{ 311{
343 MAGIC *mg; 312 MAGIC *mg;
344 313
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 314 if (!SvROK (sv)
315 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
316 || (SvSTASH (SvRV (sv)) != aio_grp_stash
317 && SvSTASH (SvRV (sv)) != aio_req_stash
318 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 319 croak ("object of class IO::AIO::REQ expected");
347 320
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 321 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 322
350 return mg ? (aio_req)mg->mg_ptr : 0; 323 return mg ? (aio_req)mg->mg_ptr : 0;
351} 324}
352 325
326static aio_wd
327SvAIO_WD (SV *sv)
328{
329 if (!SvROK (sv)
330 || SvTYPE (SvRV (sv)) != SVt_PVMG
331 || SvSTASH (SvRV (sv)) != aio_wd_stash)
332 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
333
334 return (aio_wd)(long)SvIVX (SvRV (sv));
335}
336
337static void
353static void aio_grp_feed (aio_req grp) 338aio_grp_feed (aio_req grp)
354{ 339{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 340 if (grp->sv2 && SvOK (grp->sv2))
356 { 341 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 342 dSP;
362 343
363 ENTER; 344 ENTER;
364 SAVETMPS; 345 SAVETMPS;
365 PUSHMARK (SP); 346 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 347 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 348 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 349 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 350 SPAGAIN;
370 FREETMPS; 351 FREETMPS;
371 LEAVE; 352 LEAVE;
372 }
373
374 /* stop if no progress has been made */
375 if (old_len == grp->size)
376 {
377 SvREFCNT_dec (grp->sv2);
378 grp->sv2 = 0;
379 break;
380 }
381 } 353 }
382} 354}
383 355
384static void aio_grp_dec (aio_req grp) 356static void
357req_submit (eio_req *req)
385{ 358{
386 --grp->size; 359 eio_submit (req);
387 360
388 /* call feeder, if applicable */ 361 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 362 {
394 req_invoke (grp); 363 dSP;
395 req_free (grp); 364 SV *cb = sv_2mortal (on_next_submit);
365
366 on_next_submit = 0;
367
368 PUSHMARK (SP);
369 PUTBACK;
370 call_sv (cb, G_DISCARD | G_EVAL);
396 } 371 }
397} 372}
398 373
374static int
399static void req_invoke (aio_req req) 375req_invoke (eio_req *req)
400{ 376{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 377 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 378 SvREADONLY_off (req->sv2);
405 379
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 380 if (!EIO_CANCELLED (req) && req->callback)
407 { 381 {
382 dSP;
383 static SV *sv_result_cache; /* caches the result integer SV */
384 SV *sv_result;
385
408 ENTER; 386 ENTER;
409 SAVETMPS; 387 SAVETMPS;
410 PUSHMARK (SP); 388 PUSHMARK (SP);
411 EXTEND (SP, 1); 389 EXTEND (SP, 1);
412 390
391 /* do not recreate the result IV from scratch each time */
392 if (expect_true (sv_result_cache))
393 {
394 sv_result = sv_result_cache; sv_result_cache = 0;
395 SvIV_set (sv_result, req->result);
396 SvIOK_only (sv_result);
397 }
398 else
399 {
400 sv_result = newSViv (req->result);
401 SvREADONLY_on (sv_result);
402 }
403
413 switch (req->type) 404 switch (req->type)
414 { 405 {
406 case EIO_WD_OPEN:
407 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
408 break;
409
415 case REQ_READDIR: 410 case EIO_READDIR:
416 { 411 {
417 SV *rv = &PL_sv_undef; 412 SV *rv = &PL_sv_undef;
418 413
419 if (req->result >= 0) 414 if (req->result >= 0)
420 { 415 {
421 int i; 416 int i;
422 char *buf = req->ptr2; 417 char *names = (char *)req->ptr2;
418 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 419 AV *av = newAV ();
424 420
425 av_extend (av, req->result - 1); 421 av_extend (av, req->result - 1);
426 422
427 for (i = 0; i < req->result; ++i) 423 for (i = 0; i < req->result; ++i)
428 { 424 {
429 SV *sv = newSVpv (buf, 0); 425 if (req->int1 & EIO_READDIR_DENTS)
426 {
427 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 428
429 if (req->int1 & EIO_READDIR_CUSTOM2)
430 {
431 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
432 AV *avent = newAV ();
433
434 av_extend (avent, 2);
435
436 if (!sv_type [ent->type])
437 {
438 sv_type [ent->type] = newSViv (ent->type);
439 SvREADONLY_on (sv_type [ent->type]);
440 }
441
442 av_store (avent, 0, namesv);
443 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
444 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
445
446 av_store (av, i, newRV_noinc ((SV *)avent));
447 }
448 else
431 av_store (av, i, sv); 449 av_store (av, i, namesv);
450
451 ++ent;
452 }
453 else
454 {
455 SV *name = newSVpv (names, 0);
456 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 457 names += SvCUR (name) + 1;
458 }
433 } 459 }
434 460
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 461 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 462 }
437 463
438 PUSHs (rv); 464 PUSHs (rv);
465
466 if (req->int1 & EIO_READDIR_CUSTOM1)
467 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 468 }
440 break; 469 break;
441 470
442 case REQ_OPEN: 471 case EIO_OPEN:
443 { 472 {
444 /* convert fd to fh */ 473 /* convert fd to fh */
445 SV *fh; 474 SV *fh = &PL_sv_undef;
446 475
447 PUSHs (sv_2mortal (newSViv (req->result))); 476 if (req->result >= 0)
448 PUTBACK; 477 {
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 478 GV *gv = (GV *)sv_newmortal ();
450 SPAGAIN; 479 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
480 char sym [64];
481 int symlen;
482
483 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
484 gv_init (gv, aio_stash, sym, symlen, 0);
451 485
452 fh = SvREFCNT_inc (POPs); 486 symlen = snprintf (
487 sym,
488 sizeof (sym),
489 "%s&=%d",
490 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
491 (int)req->result
492 );
453 493
494 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
495 fh = (SV *)gv;
496 }
497
454 PUSHMARK (SP); 498 PUSHs (fh);
455 XPUSHs (sv_2mortal (fh));
456 } 499 }
457 break; 500 break;
458 501
502 case EIO_STATVFS:
503 case EIO_FSTATVFS:
504 {
505 SV *rv = &PL_sv_undef;
506
507#ifndef _WIN32
508 if (req->result >= 0)
509 {
510 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
511 HV *hv = newHV ();
512
513 rv = sv_2mortal (newRV_noinc ((SV *)hv));
514
515 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
516 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
517 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
518 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
519 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
520 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
521 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
522 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
523 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
524 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
525 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
526 }
527#endif
528
529 PUSHs (rv);
530 }
531
532 break;
533
459 case REQ_GROUP: 534 case EIO_GROUP:
460 req->int1 = 2; /* mark group as finished */ 535 req->int1 = 2; /* mark group as finished */
461 536
462 if (req->sv1) 537 if (req->sv1)
463 { 538 {
464 int i; 539 int i;
… …
468 for (i = 0; i <= AvFILL (av); ++i) 543 for (i = 0; i <= AvFILL (av); ++i)
469 PUSHs (*av_fetch (av, i, 0)); 544 PUSHs (*av_fetch (av, i, 0));
470 } 545 }
471 break; 546 break;
472 547
473 case REQ_NOP: 548 case EIO_NOP:
474 case REQ_BUSY: 549 case EIO_BUSY:
475 break; 550 break;
476 551
477 case REQ_READLINK: 552 case EIO_READLINK:
553 case EIO_REALPATH:
478 if (req->result > 0) 554 if (req->result > 0)
555 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
556 break;
557
558 case EIO_STAT:
559 case EIO_LSTAT:
560 case EIO_FSTAT:
561 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
562
563 if (!(PL_laststatval = req->result))
564 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
565 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
566
567 PUSHs (sv_result);
568 break;
569
570 case EIO_SEEK:
571 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
572 break;
573
574 case EIO_READ:
575 {
576 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
577 *SvEND (req->sv2) = 0;
578 SvPOK_only (req->sv2);
579 SvSETMAGIC (req->sv2);
580 PUSHs (sv_result);
581 }
582 break;
583
584 case EIO_CUSTOM:
585 if (req->feed == fiemap)
479 { 586 {
480 SvCUR_set (req->sv1, req->result); 587#if HAVE_FIEMAP
481 *SvEND (req->sv1) = 0;
482 PUSHs (req->sv1); 588 if (!req->result)
589 {
590 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
591
592 if (fiemap->fm_extent_count)
593 {
594 AV *av = newAV ();
595 int i;
596
597 while (fiemap->fm_mapped_extents)
598 {
599 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
600 AV *ext_av = newAV ();
601
602 av_store (ext_av, 3, newSVuv (extent->fe_flags));
603 av_store (ext_av, 2, newSVval64 (extent->fe_length));
604 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
605 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
606
607 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
608 }
609
610 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
611 }
612 else
613 {
614 SvIV_set (sv_result, fiemap->fm_mapped_extents);
615 PUSHs (sv_result);
616 }
617 }
618#endif
483 } 619 }
620 else
621 PUSHs (sv_result);
484 break; 622 break;
485 623
486 case REQ_STAT: 624 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
487 case REQ_LSTAT: 625 if (req->result > 0)
488 case REQ_FSTAT: 626 SvIV_set (sv_result, 0);
489 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 627 /* FALLTHROUGH */
490 PL_laststatval = req->result;
491 PL_statcache = *(Stat_t *)(req->ptr2);
492 PUSHs (sv_2mortal (newSViv (req->result)));
493 break;
494
495 case REQ_READ:
496 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
497 *SvEND (req->sv1) = 0;
498 PUSHs (sv_2mortal (newSViv (req->result)));
499 break;
500 628
501 default: 629 default:
502 PUSHs (sv_2mortal (newSViv (req->result))); 630 PUSHs (sv_result);
503 break; 631 break;
504 } 632 }
505 633
506 errno = req->errorno; 634 errno = req->errorno;
507 635
508 PUTBACK; 636 PUTBACK;
509 call_sv (req->callback, G_VOID | G_EVAL); 637 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510 SPAGAIN; 638 SPAGAIN;
639
640 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
641 SvREFCNT_dec (sv_result);
642 else
643 sv_result_cache = sv_result;
511 644
512 FREETMPS; 645 FREETMPS;
513 LEAVE; 646 LEAVE;
647
648 PUTBACK;
514 } 649 }
515 650
516 if (req->grp) 651 return !!SvTRUE (ERRSV);
517 {
518 aio_req grp = req->grp;
519
520 /* unlink request */
521 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524 if (grp->grp_first == req)
525 grp->grp_first = req->grp_next;
526
527 aio_grp_dec (grp);
528 }
529
530 if (SvTRUE (ERRSV))
531 {
532 req_free (req);
533 croak (0);
534 }
535} 652}
536 653
537static void req_free (aio_req req) 654static void
655req_destroy (aio_req req)
538{ 656{
539 if (req->self) 657 if (req->self)
540 { 658 {
541 sv_unmagic (req->self, PERL_MAGIC_ext); 659 sv_unmagic (req->self, PERL_MAGIC_ext);
542 SvREFCNT_dec (req->self); 660 SvREFCNT_dec (req->self);
543 } 661 }
544 662
545 SvREFCNT_dec (req->fh);
546 SvREFCNT_dec (req->sv1); 663 SvREFCNT_dec (req->sv1);
547 SvREFCNT_dec (req->sv2); 664 SvREFCNT_dec (req->sv2);
665 SvREFCNT_dec (req->sv3);
666 SvREFCNT_dec (req->sv4);
548 SvREFCNT_dec (req->callback); 667 SvREFCNT_dec (req->callback);
549 668
550 if (req->flags & FLAG_PTR2_FREE)
551 free (req->ptr2);
552
553 Safefree (req); 669 free (req);
554} 670}
555 671
672static void
556static void req_cancel_subs (aio_req grp) 673req_cancel_subs (aio_req grp)
557{ 674{
558 aio_req sub;
559
560 if (grp->type != REQ_GROUP) 675 if (grp->type != EIO_GROUP)
561 return; 676 return;
562 677
563 SvREFCNT_dec (grp->sv2); 678 SvREFCNT_dec (grp->sv2);
564 grp->sv2 = 0; 679 grp->sv2 = 0;
565 680
566 for (sub = grp->grp_first; sub; sub = sub->grp_next) 681 eio_grp_cancel (grp);
567 req_cancel (sub);
568} 682}
569 683
570static void req_cancel (aio_req req) 684static void ecb_cold
685create_respipe (void)
571{ 686{
572 req->flags |= FLAG_CANCELLED; 687 if (s_epipe_renew (&respipe))
573 688 croak ("IO::AIO: unable to initialize result pipe");
574 req_cancel_subs (req);
575} 689}
576 690
577static void *aio_proc(void *arg); 691static void
578 692poll_wait (void)
579static void start_thread (void)
580{ 693{
581 sigset_t fullsigset, oldsigset;
582 pthread_attr_t attr;
583
584 worker *wrk = calloc (1, sizeof (worker));
585
586 if (!wrk)
587 croak ("unable to allocate worker thread data");
588
589 pthread_attr_init (&attr);
590 pthread_attr_setstacksize (&attr, STACKSIZE);
591 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592#ifdef PTHREAD_SCOPE_PROCESS
593 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594#endif
595
596 sigfillset (&fullsigset);
597
598 LOCK (wrklock);
599 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602 {
603 wrk->prev = &wrk_first;
604 wrk->next = wrk_first.next;
605 wrk_first.next->prev = wrk;
606 wrk_first.next = wrk;
607 ++started;
608 }
609 else
610 free (wrk);
611
612 sigprocmask (SIG_SETMASK, &oldsigset, 0);
613 UNLOCK (wrklock);
614}
615
616static void maybe_start_thread ()
617{
618 if (get_nthreads () >= wanted)
619 return;
620
621 /* todo: maybe use idle here, but might be less exact */
622 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623 return;
624
625 start_thread ();
626}
627
628static void req_send (aio_req req)
629{
630 ++nreqs;
631
632 LOCK (reqlock);
633 ++nready;
634 reqq_push (&req_queue, req);
635 pthread_cond_signal (&reqwait);
636 UNLOCK (reqlock);
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 pthread_cond_signal (&reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 694 while (eio_nreqs ())
687 { 695 {
688 int size; 696 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 697
698 X_LOCK (reslock);
690 size = res_queue.size; 699 size = res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 700 X_UNLOCK (reslock);
692 701
693 if (size) 702 if (size)
694 return; 703 return;
695 704
696 maybe_start_thread (); 705 etp_maybe_start_thread ();
697 706
698 FD_ZERO(&rfd); 707 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 708 }
703} 709}
704 710
705static int poll_cb () 711static int
712poll_cb (void)
706{ 713{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 for (;;) 714 for (;;)
718 { 715 {
719 for (;;) 716 int res = eio_poll ();
717
718 if (res > 0)
719 croak (0);
720
721 if (!max_outstanding || max_outstanding > eio_nreqs ())
722 return res;
723
724 poll_wait ();
725 }
726}
727
728static void ecb_cold
729reinit (void)
730{
731 create_respipe ();
732
733 if (eio_init (want_poll, done_poll) < 0)
734 croak ("IO::AIO: unable to initialise eio library");
735}
736
737/*****************************************************************************/
738
739#if !_POSIX_MAPPED_FILES
740# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
741# define munmap(addr,length) EIO_ENOSYS ()
742#endif
743
744#if !_POSIX_MEMORY_PROTECTION
745# define mprotect(addr,len,prot) EIO_ENOSYS ()
746# define PROT_NONE 0
747# define PROT_WRITE 0
748# define MAP_PRIVATE 0
749# define MAP_SHARED 0
750# define MAP_FIXED 0
751#endif
752
753#define MMAP_MAGIC PERL_MAGIC_ext
754
755static int ecb_cold
756mmap_free (pTHX_ SV *sv, MAGIC *mg)
757{
758 int old_errno = errno;
759 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
760 errno = old_errno;
761
762 mg->mg_obj = 0; /* just in case */
763
764 SvREADONLY_off (sv);
765
766 if (SvPVX (sv) != mg->mg_ptr)
767 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
768
769 SvCUR_set (sv, 0);
770 SvPVX (sv) = 0;
771 SvOK_off (sv);
772
773 return 0;
774}
775
776static MGVTBL mmap_vtbl = {
777 0, 0, 0, 0, mmap_free
778};
779
780/*****************************************************************************/
781
782static SV *
783get_cb (SV *cb_sv)
784{
785 SvGETMAGIC (cb_sv);
786 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
787}
788
789static aio_req ecb_noinline
790dreq (SV *callback)
791{
792 SV *cb_cv;
793 aio_req req;
794 int req_pri = next_pri;
795 next_pri = EIO_PRI_DEFAULT;
796
797 cb_cv = get_cb (callback);
798
799 req = calloc (sizeof (*req), 1);
800 if (!req)
801 croak ("out of memory during eio_req allocation");
802
803 req->callback = SvREFCNT_inc (cb_cv);
804 req->pri = req_pri;
805
806 return req;
807}
808
809#define dREQ \
810 aio_req req = dreq (callback); \
811
812#define REQ_SEND \
813 PUTBACK; \
814 req_submit (req); \
815 SPAGAIN; \
816 \
817 if (GIMME_V != G_VOID) \
818 XPUSHs (req_sv (req, aio_req_stash));
819
820ecb_inline void
821req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
822{
823 if (expect_false (SvROK (path)))
824 {
825 SV *rv = SvRV (path);
826 SV *wdob;
827
828 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
720 { 829 {
721 maybe_start_thread (); 830 path = AvARRAY (rv)[1];
831 wdob = AvARRAY (rv)[0];
722 832
723 LOCK (reslock); 833 if (SvOK (wdob))
724 req = reqq_shift (&res_queue);
725
726 if (req)
727 { 834 {
728 --npending; 835 *wd = SvAIO_WD (wdob);
729 836 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
730 if (!res_queue.size)
731 {
732 /* read any signals sent by the worker threads */
733 char buf [32];
734 while (read (respipe [0], buf, 32) == 32)
735 ;
736 }
737 }
738
739 UNLOCK (reslock);
740
741 if (!req)
742 break;
743
744 --nreqs;
745
746 if (req->type == REQ_GROUP && req->size)
747 {
748 req->int1 = 1; /* mark request as delayed */
749 continue;
750 } 837 }
751 else 838 else
752 { 839 *wd = EIO_INVALID_WD;
753 req_invoke (req);
754
755 count++;
756 }
757
758 req_free (req);
759
760 if (maxreqs && !--maxreqs)
761 break;
762
763 if (max_poll_time)
764 {
765 gettimeofday (&tv_now, 0);
766
767 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768 break;
769 }
770 } 840 }
841 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
842 {
843 *wd = (aio_wd)(long)SvIVX (rv);
844 *wdsv = SvREFCNT_inc_NN (rv);
845 *ptr = ".";
846 return; /* path set to "." */
847 }
848 else
849 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
850 }
771 851
772 if (nreqs <= max_outstanding) 852 *pathsv = newSVsv (path);
853 *ptr = SvPVbyte_nolen (*pathsv);
854}
855
856static void ecb_noinline
857req_set_path1 (aio_req req, SV *path)
858{
859 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
860}
861
862static void ecb_noinline
863req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
864{
865 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
866
867 switch (SvTYPE (rv))
868 {
869 case SVt_PVIO:
870 case SVt_PVLV:
871 case SVt_PVGV:
872 req->type = type_fh;
873 req->sv1 = newSVsv (fh_or_path);
874 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773 break; 875 break;
774 876
775 poll_wait (); 877 default:
776 878 req->type = type_path;
777 ++maxreqs; 879 req_set_path1 (req, fh_or_path);
880 break;
778 } 881 }
779
780 return count;
781} 882}
782 883
783static void create_pipe () 884XS(boot_IO__AIO) ecb_cold;
784{
785 if (pipe (respipe))
786 croak ("unable to initialize result pipe");
787 885
788 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789 croak ("cannot set result pipe to nonblocking mode");
790
791 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792 croak ("cannot set result pipe to nonblocking mode");
793}
794
795/*****************************************************************************/
796/* work around various missing functions */
797
798#if !HAVE_PREADWRITE
799# define pread aio_pread
800# define pwrite aio_pwrite
801
802/*
803 * make our pread/pwrite safe against themselves, but not against
804 * normal read/write by using a mutex. slows down execution a lot,
805 * but that's your problem, not mine.
806 */
807static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810{
811 ssize_t res;
812 off_t ooffset;
813
814 LOCK (preadwritelock);
815 ooffset = lseek (fd, 0, SEEK_CUR);
816 lseek (fd, offset, SEEK_SET);
817 res = read (fd, buf, count);
818 lseek (fd, ooffset, SEEK_SET);
819 UNLOCK (preadwritelock);
820
821 return res;
822}
823
824static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825{
826 ssize_t res;
827 off_t ooffset;
828
829 LOCK (preadwritelock);
830 ooffset = lseek (fd, 0, SEEK_CUR);
831 lseek (fd, offset, SEEK_SET);
832 res = write (fd, buf, count);
833 lseek (fd, offset, SEEK_SET);
834 UNLOCK (preadwritelock);
835
836 return res;
837}
838#endif
839
840#if !HAVE_FDATASYNC
841# define fdatasync fsync
842#endif
843
844#if !HAVE_READAHEAD
845# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848{
849 dBUF;
850
851 while (count > 0)
852 {
853 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855 pread (fd, aio_buf, len, offset);
856 offset += len;
857 count -= len;
858 }
859
860 errno = 0;
861}
862
863#endif
864
865#if !HAVE_READDIR_R
866# define readdir_r aio_readdir_r
867
868static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871{
872 struct dirent *e;
873 int errorno;
874
875 LOCK (readdirlock);
876
877 e = readdir (dirp);
878 errorno = errno;
879
880 if (e)
881 {
882 *res = ent;
883 strcpy (ent->d_name, e->d_name);
884 }
885 else
886 *res = 0;
887
888 UNLOCK (readdirlock);
889
890 errno = errorno;
891 return e ? 0 : -1;
892}
893#endif
894
895/* sendfile always needs emulation */
896static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897{
898 ssize_t res;
899
900 if (!count)
901 return 0;
902
903#if HAVE_SENDFILE
904# if __linux
905 res = sendfile (ofd, ifd, &offset, count);
906
907# elif __freebsd
908 /*
909 * Of course, the freebsd sendfile is a dire hack with no thoughts
910 * wasted on making it similar to other I/O functions.
911 */
912 {
913 off_t sbytes;
914 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916 if (res < 0 && sbytes)
917 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918 res = sbytes;
919 }
920
921# elif __hpux
922 res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924# elif __solaris
925 {
926 struct sendfilevec vec;
927 size_t sbytes;
928
929 vec.sfv_fd = ifd;
930 vec.sfv_flag = 0;
931 vec.sfv_off = offset;
932 vec.sfv_len = count;
933
934 res = sendfilev (ofd, &vec, 1, &sbytes);
935
936 if (res < 0 && sbytes)
937 res = sbytes;
938 }
939
940# endif
941#else
942 res = -1;
943 errno = ENOSYS;
944#endif
945
946 if (res < 0
947 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948#if __solaris
949 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
950#endif
951 )
952 )
953 {
954 /* emulate sendfile. this is a major pain in the ass */
955 dBUF;
956
957 res = 0;
958
959 while (count)
960 {
961 ssize_t cnt;
962
963 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965 if (cnt <= 0)
966 {
967 if (cnt && !res) res = -1;
968 break;
969 }
970
971 cnt = write (ofd, aio_buf, cnt);
972
973 if (cnt <= 0)
974 {
975 if (cnt && !res) res = -1;
976 break;
977 }
978
979 offset += cnt;
980 res += cnt;
981 count -= cnt;
982 }
983 }
984
985 return res;
986}
987
988/* read a full directory */
989static void scandir_ (aio_req req, worker *self)
990{
991 DIR *dirp;
992 union
993 {
994 struct dirent d;
995 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996 } *u;
997 struct dirent *entp;
998 char *name, *names;
999 int memlen = 4096;
1000 int memofs = 0;
1001 int res = 0;
1002 int errorno;
1003
1004 LOCK (wrklock);
1005 self->dirp = dirp = opendir (req->ptr1);
1006 self->dbuf = u = malloc (sizeof (*u));
1007 req->flags |= FLAG_PTR2_FREE;
1008 req->ptr2 = names = malloc (memlen);
1009 UNLOCK (wrklock);
1010
1011 if (dirp && u && names)
1012 for (;;)
1013 {
1014 errno = 0;
1015 readdir_r (dirp, &u->d, &entp);
1016
1017 if (!entp)
1018 break;
1019
1020 name = entp->d_name;
1021
1022 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023 {
1024 int len = strlen (name) + 1;
1025
1026 res++;
1027
1028 while (memofs + len > memlen)
1029 {
1030 memlen *= 2;
1031 LOCK (wrklock);
1032 req->ptr2 = names = realloc (names, memlen);
1033 UNLOCK (wrklock);
1034
1035 if (!names)
1036 break;
1037 }
1038
1039 memcpy (names + memofs, name, len);
1040 memofs += len;
1041 }
1042 }
1043
1044 if (errno)
1045 res = -1;
1046
1047 req->result = res;
1048}
1049
1050/*****************************************************************************/
1051
1052static void *aio_proc (void *thr_arg)
1053{
1054 aio_req req;
1055 struct timespec ts;
1056 worker *self = (worker *)thr_arg;
1057
1058 /* try to distribute timeouts somewhat evenly */
1059 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060 * (1000000000UL / 1024UL);
1061
1062 for (;;)
1063 {
1064 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066 LOCK (reqlock);
1067
1068 for (;;)
1069 {
1070 self->req = req = reqq_shift (&req_queue);
1071
1072 if (req)
1073 break;
1074
1075 ++idle;
1076
1077 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078 == ETIMEDOUT)
1079 {
1080 if (idle > max_idle)
1081 {
1082 --idle;
1083 UNLOCK (reqlock);
1084 LOCK (wrklock);
1085 --started;
1086 UNLOCK (wrklock);
1087 goto quit;
1088 }
1089
1090 /* we are allowed to idle, so do so without any timeout */
1091 pthread_cond_wait (&reqwait, &reqlock);
1092 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093 }
1094
1095 --idle;
1096 }
1097
1098 --nready;
1099
1100 UNLOCK (reqlock);
1101
1102 errno = 0; /* strictly unnecessary */
1103
1104 if (!(req->flags & FLAG_CANCELLED))
1105 switch (req->type)
1106 {
1107 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118 case REQ_CLOSE: req->result = close (req->int1); break;
1119 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128 case REQ_FSYNC: req->result = fsync (req->int1); break;
1129 case REQ_READDIR: scandir_ (req, self); break;
1130
1131 case REQ_BUSY:
1132 {
1133 struct timeval tv;
1134
1135 tv.tv_sec = req->int1;
1136 tv.tv_usec = req->int2;
1137
1138 req->result = select (0, 0, 0, 0, &tv);
1139 }
1140
1141 case REQ_GROUP:
1142 case REQ_NOP:
1143 break;
1144
1145 case REQ_QUIT:
1146 goto quit;
1147
1148 default:
1149 req->result = ENOSYS;
1150 break;
1151 }
1152
1153 req->errorno = errno;
1154
1155 LOCK (reslock);
1156
1157 ++npending;
1158
1159 if (!reqq_push (&res_queue, req))
1160 /* write a dummy byte to the pipe so fh becomes ready */
1161 write (respipe [1], &respipe, 1);
1162
1163 self->req = 0;
1164 worker_clear (self);
1165
1166 UNLOCK (reslock);
1167 }
1168
1169quit:
1170 LOCK (wrklock);
1171 worker_free (self);
1172 UNLOCK (wrklock);
1173
1174 return 0;
1175}
1176
1177/*****************************************************************************/
1178
1179static void atfork_prepare (void)
1180{
1181 LOCK (wrklock);
1182 LOCK (reqlock);
1183 LOCK (reslock);
1184#if !HAVE_PREADWRITE
1185 LOCK (preadwritelock);
1186#endif
1187#if !HAVE_READDIR_R
1188 LOCK (readdirlock);
1189#endif
1190}
1191
1192static void atfork_parent (void)
1193{
1194#if !HAVE_READDIR_R
1195 UNLOCK (readdirlock);
1196#endif
1197#if !HAVE_PREADWRITE
1198 UNLOCK (preadwritelock);
1199#endif
1200 UNLOCK (reslock);
1201 UNLOCK (reqlock);
1202 UNLOCK (wrklock);
1203}
1204
1205static void atfork_child (void)
1206{
1207 aio_req prv;
1208
1209 while (prv = reqq_shift (&req_queue))
1210 req_free (prv);
1211
1212 while (prv = reqq_shift (&res_queue))
1213 req_free (prv);
1214
1215 while (wrk_first.next != &wrk_first)
1216 {
1217 worker *wrk = wrk_first.next;
1218
1219 if (wrk->req)
1220 req_free (wrk->req);
1221
1222 worker_clear (wrk);
1223 worker_free (wrk);
1224 }
1225
1226 started = 0;
1227 idle = 0;
1228 nreqs = 0;
1229 nready = 0;
1230 npending = 0;
1231
1232 close (respipe [0]);
1233 close (respipe [1]);
1234 create_pipe ();
1235
1236 atfork_parent ();
1237}
1238
1239#define dREQ \
1240 aio_req req; \
1241 int req_pri = next_pri; \
1242 next_pri = DEFAULT_PRI + PRI_BIAS; \
1243 \
1244 if (SvOK (callback) && !SvROK (callback)) \
1245 croak ("callback must be undef or of reference type"); \
1246 \
1247 Newz (0, req, 1, aio_cb); \
1248 if (!req) \
1249 croak ("out of memory during aio_req allocation"); \
1250 \
1251 req->callback = newSVsv (callback); \
1252 req->pri = req_pri
1253
1254#define REQ_SEND \
1255 req_send (req); \
1256 \
1257 if (GIMME_V != G_VOID) \
1258 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259
1260MODULE = IO::AIO PACKAGE = IO::AIO 886MODULE = IO::AIO PACKAGE = IO::AIO
1261 887
1262PROTOTYPES: ENABLE 888PROTOTYPES: ENABLE
1263 889
1264BOOT: 890BOOT:
1265{ 891{
892 static const struct {
893 const char *name;
894 IV iv;
895 } *civ, const_iv[] = {
896# define const_niv(name, value) { # name, (IV) value },
897# define const_iv(name) { # name, (IV) name },
898# define const_eio(name) { # name, (IV) EIO_ ## name },
899
900 /* you have to re-run ./gendef0 after adding/Removing any constants here */
901
902 const_iv (ENOSYS)
903 const_iv (EXDEV)
904 const_iv (EBADR)
905
906 const_iv (O_RDONLY)
907 const_iv (O_WRONLY)
908 const_iv (O_RDWR)
909 const_iv (O_CREAT)
910 const_iv (O_TRUNC)
911 const_iv (O_EXCL)
912 const_iv (O_APPEND)
913
914 const_iv (O_ASYNC)
915 const_iv (O_DIRECT)
916 const_iv (O_NOATIME)
917
918 const_iv (O_CLOEXEC)
919 const_iv (O_NOCTTY)
920 const_iv (O_NOFOLLOW)
921 const_iv (O_NONBLOCK)
922 const_iv (O_EXEC)
923 const_iv (O_SEARCH)
924 const_iv (O_DIRECTORY)
925 const_iv (O_DSYNC)
926 const_iv (O_RSYNC)
927 const_iv (O_SYNC)
928 const_iv (O_TTY_INIT)
929
930 const_iv (S_IFIFO)
931 const_iv (S_IFCHR)
932 const_iv (S_IFBLK)
933 const_iv (S_IFLNK)
934 const_iv (S_IFREG)
935 const_iv (S_IFDIR)
936 const_iv (S_IFWHT)
937 const_iv (S_IFSOCK)
938 const_iv (S_IFMT)
939
940 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
941 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
942 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
943 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
944 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
945 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
946
947 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
948 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
949 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
950 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
951 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
952
953 const_iv (ST_RDONLY)
954 const_iv (ST_NOSUID)
955 const_iv (ST_NODEV)
956 const_iv (ST_NOEXEC)
957 const_iv (ST_SYNCHRONOUS)
958 const_iv (ST_MANDLOCK)
959 const_iv (ST_WRITE)
960 const_iv (ST_APPEND)
961 const_iv (ST_IMMUTABLE)
962 const_iv (ST_NOATIME)
963 const_iv (ST_NODIRATIME)
964 const_iv (ST_RELATIME)
965
966 const_iv (PROT_NONE)
967 const_iv (PROT_EXEC)
968 const_iv (PROT_READ)
969 const_iv (PROT_WRITE)
970
971 /*const_iv (MAP_FIXED)*/
972 const_iv (MAP_PRIVATE)
973 const_iv (MAP_SHARED)
974 const_iv (MAP_ANONYMOUS)
975
976 /* linuxish */
977 const_iv (MAP_HUGETLB)
978 const_iv (MAP_LOCKED)
979 const_iv (MAP_NORESERVE)
980 const_iv (MAP_POPULATE)
981 const_iv (MAP_NONBLOCK)
982
983 const_iv (FIEMAP_FLAG_SYNC)
984 const_iv (FIEMAP_FLAG_XATTR)
985 const_iv (FIEMAP_FLAGS_COMPAT)
986 const_iv (FIEMAP_EXTENT_LAST)
987 const_iv (FIEMAP_EXTENT_UNKNOWN)
988 const_iv (FIEMAP_EXTENT_DELALLOC)
989 const_iv (FIEMAP_EXTENT_ENCODED)
990 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
991 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
992 const_iv (FIEMAP_EXTENT_DATA_INLINE)
993 const_iv (FIEMAP_EXTENT_DATA_TAIL)
994 const_iv (FIEMAP_EXTENT_UNWRITTEN)
995 const_iv (FIEMAP_EXTENT_MERGED)
996 const_iv (FIEMAP_EXTENT_SHARED)
997
998 const_iv (SPLICE_F_MOVE)
999 const_iv (SPLICE_F_NONBLOCK)
1000 const_iv (SPLICE_F_MORE)
1001 const_iv (SPLICE_F_GIFT)
1002
1003 const_iv (SEEK_DATA)
1004 const_iv (SEEK_HOLE)
1005
1006 /* libeio constants */
1007 const_eio (SEEK_SET)
1008 const_eio (SEEK_CUR)
1009 const_eio (SEEK_END)
1010
1011 const_eio (MCL_FUTURE)
1012 const_eio (MCL_CURRENT)
1013
1014 const_eio (MS_ASYNC)
1015 const_eio (MS_INVALIDATE)
1016 const_eio (MS_SYNC)
1017
1018 const_eio (MT_MODIFY)
1019
1020 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1021 const_eio (SYNC_FILE_RANGE_WRITE)
1022 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1023
1024 const_eio (FALLOC_FL_KEEP_SIZE)
1025 const_eio (FALLOC_FL_PUNCH_HOLE)
1026
1027 const_eio (READDIR_DENTS)
1028 const_eio (READDIR_DIRS_FIRST)
1029 const_eio (READDIR_STAT_ORDER)
1030 const_eio (READDIR_FOUND_UNKNOWN)
1031
1032 const_eio (DT_UNKNOWN)
1033 const_eio (DT_FIFO)
1034 const_eio (DT_CHR)
1035 const_eio (DT_DIR)
1036 const_eio (DT_BLK)
1037 const_eio (DT_REG)
1038 const_eio (DT_LNK)
1039 const_eio (DT_SOCK)
1040 const_eio (DT_WHT)
1041 };
1042
1266 HV *stash = gv_stashpv ("IO::AIO", 1); 1043 aio_stash = gv_stashpv ("IO::AIO" , 1);
1044 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1045 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1046 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1267 1047
1268 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1048 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1269 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1049 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1270 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274 1050
1275 create_pipe (); 1051 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1276 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1277}
1278 1052
1053 reinit ();
1054}
1055
1279void 1056void
1057reinit ()
1058 PROTOTYPE:
1059
1060void
1280max_poll_reqs (int nreqs) 1061max_poll_reqs (unsigned int nreqs)
1281 PROTOTYPE: $ 1062 PROTOTYPE: $
1282 CODE: 1063 CODE:
1283 max_poll_reqs = nreqs; 1064 eio_set_max_poll_reqs (nreqs);
1284 1065
1285void 1066void
1286max_poll_time (double nseconds) 1067max_poll_time (double nseconds)
1287 PROTOTYPE: $ 1068 PROTOTYPE: $
1288 CODE: 1069 CODE:
1289 max_poll_time = nseconds * AIO_TICKS; 1070 eio_set_max_poll_time (nseconds);
1290 1071
1291void 1072void
1292min_parallel (int nthreads) 1073min_parallel (unsigned int nthreads)
1293 PROTOTYPE: $
1294
1295void
1296max_parallel (int nthreads)
1297 PROTOTYPE: $
1298
1299void
1300max_idle (int nthreads)
1301 PROTOTYPE: $ 1074 PROTOTYPE: $
1302 CODE: 1075 CODE:
1303 set_max_idle (nthreads); 1076 eio_set_min_parallel (nthreads);
1304 1077
1305int 1078void
1306max_outstanding (int maxreqs) 1079max_parallel (unsigned int nthreads)
1307 PROTOTYPE: $ 1080 PROTOTYPE: $
1308 CODE: 1081 CODE:
1309 RETVAL = max_outstanding; 1082 eio_set_max_parallel (nthreads);
1083
1084void
1085max_idle (unsigned int nthreads)
1086 PROTOTYPE: $
1087 CODE:
1088 eio_set_max_idle (nthreads);
1089
1090void
1091idle_timeout (unsigned int seconds)
1092 PROTOTYPE: $
1093 CODE:
1094 eio_set_idle_timeout (seconds);
1095
1096void
1097max_outstanding (unsigned int maxreqs)
1098 PROTOTYPE: $
1099 CODE:
1310 max_outstanding = maxreqs; 1100 max_outstanding = maxreqs;
1311 OUTPUT:
1312 RETVAL
1313 1101
1314void 1102void
1315aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1103aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1316 SV8 * pathname
1317 int flags
1318 int mode
1319 SV * callback
1320 PROTOTYPE: $$$;$
1321 PPCODE: 1104 PPCODE:
1322{ 1105{
1323 dREQ; 1106 dREQ;
1324 1107
1108 req->type = EIO_WD_OPEN;
1109 req_set_path1 (req, pathname);
1110
1111 REQ_SEND;
1112}
1113
1114void
1115aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1116 PPCODE:
1117{
1118 dREQ;
1119
1325 req->type = REQ_OPEN; 1120 req->type = EIO_OPEN;
1326 req->sv1 = newSVsv (pathname); 1121 req_set_path1 (req, pathname);
1327 req->ptr1 = SvPVbyte_nolen (req->sv1);
1328 req->int1 = flags; 1122 req->int1 = flags;
1329 req->mode = mode; 1123 req->int2 = mode;
1330 1124
1331 REQ_SEND; 1125 REQ_SEND;
1332} 1126}
1333 1127
1334void 1128void
1335aio_close (fh,callback=&PL_sv_undef) 1129aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336 SV * fh
1337 SV * callback
1338 PROTOTYPE: $;$
1339 ALIAS: 1130 ALIAS:
1340 aio_close = REQ_CLOSE
1341 aio_fsync = REQ_FSYNC 1131 aio_fsync = EIO_FSYNC
1342 aio_fdatasync = REQ_FDATASYNC 1132 aio_fdatasync = EIO_FDATASYNC
1133 aio_syncfs = EIO_SYNCFS
1343 PPCODE: 1134 PPCODE:
1344{ 1135{
1136 int fd = s_fileno_croak (fh, 0);
1345 dREQ; 1137 dREQ;
1346 1138
1347 req->type = ix; 1139 req->type = ix;
1348 req->fh = newSVsv (fh); 1140 req->sv1 = newSVsv (fh);
1349 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1141 req->int1 = fd;
1350 1142
1351 REQ_SEND (req); 1143 REQ_SEND;
1352} 1144}
1353 1145
1354void 1146void
1147aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1148 PPCODE:
1149{
1150 int fd = s_fileno_croak (fh, 0);
1151 dREQ;
1152
1153 req->type = EIO_SYNC_FILE_RANGE;
1154 req->sv1 = newSVsv (fh);
1155 req->int1 = fd;
1156 req->offs = offset;
1157 req->size = nbytes;
1158 req->int2 = flags;
1159
1160 REQ_SEND;
1161}
1162
1163void
1164aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1165 PPCODE:
1166{
1167 int fd = s_fileno_croak (fh, 0);
1168 dREQ;
1169
1170 req->type = EIO_FALLOCATE;
1171 req->sv1 = newSVsv (fh);
1172 req->int1 = fd;
1173 req->int2 = mode;
1174 req->offs = offset;
1175 req->size = len;
1176
1177 REQ_SEND;
1178}
1179
1180void
1181aio_close (SV *fh, SV *callback=&PL_sv_undef)
1182 PPCODE:
1183{
1184 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1185 int fd = s_fileno_croak (fh, 0);
1186 dREQ;
1187
1188 if (expect_false (close_fd < 0))
1189 {
1190 int pipefd [2];
1191
1192 if (
1193#ifdef _WIN32
1194 _pipe (pipefd, 1, _O_BINARY) < 0
1195#else
1196 pipe (pipefd) < 0
1197 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1198#endif
1199 || close (pipefd [1]) < 0
1200 )
1201 abort (); /*D*/
1202
1203 close_fd = pipefd [0];
1204 }
1205
1206 req->type = EIO_DUP2;
1207 req->int1 = close_fd;
1208 req->sv2 = newSVsv (fh);
1209 req->int2 = fd;
1210
1211 REQ_SEND;
1212}
1213
1214void
1215aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1216 PPCODE:
1217{
1218 int fd = s_fileno_croak (fh, 0);
1219 dREQ;
1220
1221 req->type = EIO_SEEK;
1222 req->sv1 = newSVsv (fh);
1223 req->int1 = fd;
1224 req->offs = SvVAL64 (offset);
1225 req->int2 = whence;
1226
1227 REQ_SEND;
1228}
1229
1230void
1355aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1231aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356 SV * fh
1357 UV offset
1358 UV length
1359 SV8 * data
1360 UV dataoffset
1361 SV * callback
1362 ALIAS: 1232 ALIAS:
1363 aio_read = REQ_READ 1233 aio_read = EIO_READ
1364 aio_write = REQ_WRITE 1234 aio_write = EIO_WRITE
1365 PROTOTYPE: $$$$$;$
1366 PPCODE: 1235 PPCODE:
1367{ 1236{
1368 STRLEN svlen; 1237 STRLEN svlen;
1238 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369 char *svptr = SvPVbyte (data, svlen); 1239 char *svptr = SvPVbyte (data, svlen);
1370 1240 UV len = SvUV (length);
1371 SvUPGRADE (data, SVt_PV);
1372 SvPOK_on (data);
1373 1241
1374 if (dataoffset < 0) 1242 if (dataoffset < 0)
1375 dataoffset += svlen; 1243 dataoffset += svlen;
1376 1244
1377 if (dataoffset < 0 || dataoffset > svlen) 1245 if (dataoffset < 0 || dataoffset > svlen)
1378 croak ("data offset outside of string"); 1246 croak ("dataoffset outside of data scalar");
1379 1247
1380 if (ix == REQ_WRITE) 1248 if (ix == EIO_WRITE)
1381 { 1249 {
1382 /* write: check length and adjust. */ 1250 /* write: check length and adjust. */
1383 if (length < 0 || length + dataoffset > svlen) 1251 if (!SvOK (length) || len + dataoffset > svlen)
1384 length = svlen - dataoffset; 1252 len = svlen - dataoffset;
1385 } 1253 }
1386 else 1254 else
1387 { 1255 {
1388 /* read: grow scalar as necessary */ 1256 /* read: check type and grow scalar as necessary */
1257 SvUPGRADE (data, SVt_PV);
1258 if (SvLEN (data) >= SvCUR (data))
1389 svptr = SvGROW (data, length + dataoffset); 1259 svptr = SvGROW (data, len + dataoffset + 1);
1260 else if (SvCUR (data) < len + dataoffset)
1261 croak ("length + dataoffset outside of scalar, and cannot grow");
1390 } 1262 }
1391
1392 if (length < 0)
1393 croak ("length must not be negative");
1394 1263
1395 { 1264 {
1396 dREQ; 1265 dREQ;
1397 1266
1398 req->type = ix; 1267 req->type = ix;
1399 req->fh = newSVsv (fh); 1268 req->sv1 = newSVsv (fh);
1400 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1269 req->int1 = fd;
1401 : IoOFP (sv_2io (fh))); 1270 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402 req->offs = offset;
1403 req->size = length; 1271 req->size = len;
1404 req->sv1 = SvREFCNT_inc (data); 1272 req->sv2 = SvREFCNT_inc (data);
1405 req->ptr1 = (char *)svptr + dataoffset; 1273 req->ptr2 = (char *)svptr + dataoffset;
1406 req->stroffset = dataoffset; 1274 req->stroffset = dataoffset;
1407 1275
1408 if (!SvREADONLY (data)) 1276 if (!SvREADONLY (data))
1409 { 1277 {
1410 SvREADONLY_on (data); 1278 SvREADONLY_on (data);
1411 req->flags |= FLAG_SV1_RO_OFF; 1279 req->flags |= FLAG_SV2_RO_OFF;
1412 } 1280 }
1413 1281
1414 REQ_SEND; 1282 REQ_SEND;
1415 } 1283 }
1416} 1284}
1417 1285
1418void 1286void
1419aio_readlink (path,callback=&PL_sv_undef) 1287aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1420 SV8 * path 1288 ALIAS:
1421 SV * callback 1289 aio_readlink = EIO_READLINK
1422 PROTOTYPE: $$;$ 1290 aio_realpath = EIO_REALPATH
1423 PPCODE: 1291 PPCODE:
1424{ 1292{
1425 SV *data;
1426 dREQ; 1293 dREQ;
1427 1294
1428 data = newSV (NAME_MAX);
1429 SvPOK_on (data);
1430
1431 req->type = REQ_READLINK; 1295 req->type = ix;
1432 req->fh = newSVsv (path); 1296 req_set_path1 (req, pathname);
1433 req->ptr2 = SvPVbyte_nolen (req->fh);
1434 req->sv1 = data;
1435 req->ptr1 = SvPVbyte_nolen (data);
1436 1297
1437 REQ_SEND; 1298 REQ_SEND;
1438} 1299}
1439 1300
1440void 1301void
1441aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1302aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1442 SV * out_fh
1443 SV * in_fh
1444 UV in_offset
1445 UV length
1446 SV * callback
1447 PROTOTYPE: $$$$;$
1448 PPCODE: 1303 PPCODE:
1449{ 1304{
1305 int ifd = s_fileno_croak (in_fh , 0);
1306 int ofd = s_fileno_croak (out_fh, 1);
1450 dREQ; 1307 dREQ;
1451 1308
1452 req->type = REQ_SENDFILE; 1309 req->type = EIO_SENDFILE;
1453 req->fh = newSVsv (out_fh); 1310 req->sv1 = newSVsv (out_fh);
1454 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1311 req->int1 = ofd;
1455 req->sv2 = newSVsv (in_fh); 1312 req->sv2 = newSVsv (in_fh);
1456 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1313 req->int2 = ifd;
1457 req->offs = in_offset; 1314 req->offs = in_offset;
1458 req->size = length; 1315 req->size = length;
1459 1316
1460 REQ_SEND; 1317 REQ_SEND;
1461} 1318}
1462 1319
1463void 1320void
1464aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1321aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465 SV * fh
1466 UV offset
1467 IV length
1468 SV * callback
1469 PROTOTYPE: $$$;$
1470 PPCODE: 1322 PPCODE:
1471{ 1323{
1324 int fd = s_fileno_croak (fh, 0);
1472 dREQ; 1325 dREQ;
1473 1326
1474 req->type = REQ_READAHEAD; 1327 req->type = EIO_READAHEAD;
1475 req->fh = newSVsv (fh); 1328 req->sv1 = newSVsv (fh);
1476 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1329 req->int1 = fd;
1477 req->offs = offset; 1330 req->offs = offset;
1478 req->size = length; 1331 req->size = length;
1479 1332
1480 REQ_SEND; 1333 REQ_SEND;
1481} 1334}
1482 1335
1483void 1336void
1484aio_stat (fh_or_path,callback=&PL_sv_undef) 1337aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485 SV8 * fh_or_path
1486 SV * callback
1487 ALIAS: 1338 ALIAS:
1488 aio_stat = REQ_STAT 1339 aio_stat = EIO_STAT
1489 aio_lstat = REQ_LSTAT 1340 aio_lstat = EIO_LSTAT
1341 aio_statvfs = EIO_STATVFS
1490 PPCODE: 1342 PPCODE:
1491{ 1343{
1492 dREQ; 1344 dREQ;
1493 1345
1494 req->ptr2 = malloc (sizeof (Stat_t)); 1346 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1495 if (!req->ptr2)
1496 {
1497 req_free (req);
1498 croak ("out of memory during aio_stat statdata allocation");
1499 }
1500
1501 req->flags |= FLAG_PTR2_FREE;
1502
1503 if (SvPOK (fh_or_path))
1504 {
1505 req->type = ix;
1506 req->sv1 = newSVsv (fh_or_path);
1507 req->ptr1 = SvPVbyte_nolen (req->sv1);
1508 }
1509 else
1510 {
1511 req->type = REQ_FSTAT;
1512 req->fh = newSVsv (fh_or_path);
1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514 }
1515 1347
1516 REQ_SEND; 1348 REQ_SEND;
1517} 1349}
1518 1350
1351UV
1352major (UV dev)
1353 ALIAS:
1354 minor = 1
1355 CODE:
1356 RETVAL = ix ? major (dev) : minor (dev);
1357 OUTPUT:
1358 RETVAL
1359
1360UV
1361makedev (UV maj, UV min)
1362 CODE:
1363 RETVAL = makedev (maj, min);
1364 OUTPUT:
1365 RETVAL
1366
1519void 1367void
1368aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1369 PPCODE:
1370{
1371 dREQ;
1372
1373 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1374 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1375 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1376
1377 REQ_SEND;
1378}
1379
1380void
1381aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1382 PPCODE:
1383{
1384 dREQ;
1385
1386 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1387 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1388
1389 REQ_SEND;
1390}
1391
1392void
1393aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1394 PPCODE:
1395{
1396 dREQ;
1397
1398 req->int2 = mode;
1399 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1400
1401 REQ_SEND;
1402}
1403
1404void
1405aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1406 PPCODE:
1407{
1408 dREQ;
1409
1410 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1411 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1412 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1413
1414 REQ_SEND;
1415}
1416
1417void
1418aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1419 PPCODE:
1420{
1421 dREQ;
1422
1423 req->type = EIO_READDIR;
1424 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1425
1426 if (flags & EIO_READDIR_DENTS)
1427 req->int1 |= EIO_READDIR_CUSTOM2;
1428
1429 req_set_path1 (req, pathname);
1430
1431 REQ_SEND;
1432}
1433
1434void
1435aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1436 PPCODE:
1437{
1438 dREQ;
1439
1440 req->type = EIO_MKDIR;
1441 req->int2 = mode;
1442 req_set_path1 (req, pathname);
1443
1444 REQ_SEND;
1445}
1446
1447void
1520aio_unlink (pathname,callback=&PL_sv_undef) 1448aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521 SV8 * pathname
1522 SV * callback
1523 ALIAS: 1449 ALIAS:
1524 aio_unlink = REQ_UNLINK 1450 aio_unlink = EIO_UNLINK
1525 aio_rmdir = REQ_RMDIR 1451 aio_rmdir = EIO_RMDIR
1526 aio_readdir = REQ_READDIR 1452 aio_readdir = EIO_READDIR
1527 PPCODE: 1453 PPCODE:
1528{ 1454{
1529 dREQ; 1455 dREQ;
1530 1456
1531 req->type = ix; 1457 req->type = ix;
1532 req->sv1 = newSVsv (pathname); 1458 req_set_path1 (req, pathname);
1533 req->ptr1 = SvPVbyte_nolen (req->sv1);
1534 1459
1535 REQ_SEND; 1460 REQ_SEND;
1536} 1461}
1537 1462
1538void 1463void
1539aio_link (oldpath,newpath,callback=&PL_sv_undef) 1464aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540 SV8 * oldpath
1541 SV8 * newpath
1542 SV * callback
1543 ALIAS: 1465 ALIAS:
1544 aio_link = REQ_LINK 1466 aio_link = EIO_LINK
1545 aio_symlink = REQ_SYMLINK 1467 aio_symlink = EIO_SYMLINK
1546 aio_rename = REQ_RENAME 1468 aio_rename = EIO_RENAME
1547 PPCODE: 1469 PPCODE:
1548{ 1470{
1471 eio_wd wd2 = 0;
1549 dREQ; 1472 dREQ;
1550 1473
1551 req->type = ix; 1474 req->type = ix;
1552 req->fh = newSVsv (oldpath); 1475 req_set_path1 (req, oldpath);
1553 req->ptr2 = SvPVbyte_nolen (req->fh); 1476 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1554 req->sv1 = newSVsv (newpath); 1477 req->int3 = (long)wd2;
1555 req->ptr1 = SvPVbyte_nolen (req->sv1);
1556 1478
1557 REQ_SEND; 1479 REQ_SEND;
1558} 1480}
1559 1481
1560void 1482void
1561aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1483aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562 SV8 * pathname
1563 SV * callback
1564 UV mode
1565 UV dev
1566 PPCODE: 1484 PPCODE:
1567{ 1485{
1568 dREQ; 1486 dREQ;
1569 1487
1570 req->type = REQ_MKNOD; 1488 req->type = EIO_MKNOD;
1571 req->sv1 = newSVsv (pathname);
1572 req->ptr1 = SvPVbyte_nolen (req->sv1);
1573 req->mode = (mode_t)mode; 1489 req->int2 = (mode_t)mode;
1574 req->offs = dev; 1490 req->offs = dev;
1491 req_set_path1 (req, pathname);
1575 1492
1576 REQ_SEND; 1493 REQ_SEND;
1577} 1494}
1578 1495
1579void 1496void
1497aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1498 ALIAS:
1499 aio_mtouch = EIO_MTOUCH
1500 aio_msync = EIO_MSYNC
1501 PPCODE:
1502{
1503 STRLEN svlen;
1504 char *svptr = SvPVbyte (data, svlen);
1505 UV len = SvUV (length);
1506
1507 if (offset < 0)
1508 offset += svlen;
1509
1510 if (offset < 0 || offset > svlen)
1511 croak ("offset outside of scalar");
1512
1513 if (!SvOK (length) || len + offset > svlen)
1514 len = svlen - offset;
1515
1516 {
1517 dREQ;
1518
1519 req->type = ix;
1520 req->sv2 = SvREFCNT_inc (data);
1521 req->ptr2 = (char *)svptr + offset;
1522 req->size = len;
1523 req->int1 = flags;
1524
1525 REQ_SEND;
1526 }
1527}
1528
1529void
1530aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1531 PPCODE:
1532{
1533 STRLEN svlen;
1534 char *svptr = SvPVbyte (data, svlen);
1535 UV len = SvUV (length);
1536
1537 if (offset < 0)
1538 offset += svlen;
1539
1540 if (offset < 0 || offset > svlen)
1541 croak ("offset outside of scalar");
1542
1543 if (!SvOK (length) || len + offset > svlen)
1544 len = svlen - offset;
1545
1546 {
1547 dREQ;
1548
1549 req->type = EIO_MLOCK;
1550 req->sv2 = SvREFCNT_inc (data);
1551 req->ptr2 = (char *)svptr + offset;
1552 req->size = len;
1553
1554 REQ_SEND;
1555 }
1556}
1557
1558void
1559aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1560 PPCODE:
1561{
1562 dREQ;
1563
1564 req->type = EIO_MLOCKALL;
1565 req->int1 = flags;
1566
1567 REQ_SEND;
1568}
1569
1570void
1571aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1572 PPCODE:
1573{
1574 int fd = s_fileno_croak (fh, 0);
1575 dREQ;
1576
1577 req->type = EIO_CUSTOM;
1578 req->sv1 = newSVsv (fh);
1579 req->int1 = fd;
1580
1581 req->feed = fiemap;
1582#if HAVE_FIEMAP
1583 /* keep our fingers crossed that the next two types are 64 bit */
1584 req->offs = start;
1585 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1586 req->int2 = flags;
1587 req->int3 = SvOK (count) ? SvIV (count) : -1;
1588#endif
1589
1590 REQ_SEND;
1591}
1592
1593void
1580aio_busy (delay,callback=&PL_sv_undef) 1594aio_busy (double delay, SV *callback=&PL_sv_undef)
1581 double delay
1582 SV * callback
1583 PPCODE: 1595 PPCODE:
1584{ 1596{
1585 dREQ; 1597 dREQ;
1586 1598
1587 req->type = REQ_BUSY; 1599 req->type = EIO_BUSY;
1588 req->int1 = delay < 0. ? 0 : delay; 1600 req->nv1 = delay < 0. ? 0. : delay;
1589 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590 1601
1591 REQ_SEND; 1602 REQ_SEND;
1592} 1603}
1593 1604
1594void 1605void
1595aio_group (callback=&PL_sv_undef) 1606aio_group (SV *callback=&PL_sv_undef)
1596 SV * callback
1597 PROTOTYPE: ;$
1598 PPCODE: 1607 PPCODE:
1599{ 1608{
1600 dREQ; 1609 dREQ;
1601 1610
1602 req->type = REQ_GROUP; 1611 req->type = EIO_GROUP;
1603 1612
1604 req_send (req); 1613 req_submit (req);
1605 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1614 XPUSHs (req_sv (req, aio_grp_stash));
1606} 1615}
1607 1616
1608void 1617void
1609aio_nop (callback=&PL_sv_undef) 1618aio_nop (SV *callback=&PL_sv_undef)
1610 SV * callback 1619 ALIAS:
1620 aio_nop = EIO_NOP
1621 aio_sync = EIO_SYNC
1611 PPCODE: 1622 PPCODE:
1612{ 1623{
1613 dREQ; 1624 dREQ;
1614 1625
1615 req->type = REQ_NOP; 1626 req->type = ix;
1616 1627
1617 REQ_SEND; 1628 REQ_SEND;
1618} 1629}
1619 1630
1620int 1631int
1621aioreq_pri (int pri = 0) 1632aioreq_pri (int pri = 0)
1622 PROTOTYPE: ;$
1623 CODE: 1633 CODE:
1624 RETVAL = next_pri - PRI_BIAS; 1634 RETVAL = next_pri;
1625 if (items > 0) 1635 if (items > 0)
1626 { 1636 {
1627 if (pri < PRI_MIN) pri = PRI_MIN; 1637 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628 if (pri > PRI_MAX) pri = PRI_MAX; 1638 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629 next_pri = pri + PRI_BIAS; 1639 next_pri = pri;
1630 } 1640 }
1631 OUTPUT: 1641 OUTPUT:
1632 RETVAL 1642 RETVAL
1633 1643
1634void 1644void
1635aioreq_nice (int nice = 0) 1645aioreq_nice (int nice = 0)
1636 CODE: 1646 CODE:
1637 nice = next_pri - nice; 1647 nice = next_pri - nice;
1638 if (nice < PRI_MIN) nice = PRI_MIN; 1648 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639 if (nice > PRI_MAX) nice = PRI_MAX; 1649 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640 next_pri = nice + PRI_BIAS; 1650 next_pri = nice;
1641 1651
1642void 1652void
1643flush () 1653flush ()
1644 PROTOTYPE:
1645 CODE: 1654 CODE:
1646 while (nreqs) 1655 while (eio_nreqs ())
1647 { 1656 {
1648 poll_wait (); 1657 poll_wait ();
1649 poll_cb (); 1658 poll_cb ();
1650 } 1659 }
1651 1660
1652int 1661int
1653poll() 1662poll ()
1654 PROTOTYPE:
1655 CODE: 1663 CODE:
1656 poll_wait (); 1664 poll_wait ();
1657 RETVAL = poll_cb (); 1665 RETVAL = poll_cb ();
1658 OUTPUT: 1666 OUTPUT:
1659 RETVAL 1667 RETVAL
1660 1668
1661int 1669int
1662poll_fileno() 1670poll_fileno ()
1663 PROTOTYPE:
1664 CODE: 1671 CODE:
1665 RETVAL = respipe [0]; 1672 RETVAL = s_epipe_fd (&respipe);
1666 OUTPUT: 1673 OUTPUT:
1667 RETVAL 1674 RETVAL
1668 1675
1669int 1676int
1670poll_cb(...) 1677poll_cb (...)
1671 PROTOTYPE: 1678 PROTOTYPE:
1672 CODE: 1679 CODE:
1673 RETVAL = poll_cb (); 1680 RETVAL = poll_cb ();
1674 OUTPUT: 1681 OUTPUT:
1675 RETVAL 1682 RETVAL
1676 1683
1677void 1684void
1678poll_wait() 1685poll_wait ()
1679 PROTOTYPE:
1680 CODE: 1686 CODE:
1681 poll_wait (); 1687 poll_wait ();
1682 1688
1683int 1689int
1684nreqs() 1690nreqs ()
1685 PROTOTYPE:
1686 CODE: 1691 CODE:
1687 RETVAL = nreqs; 1692 RETVAL = eio_nreqs ();
1688 OUTPUT: 1693 OUTPUT:
1689 RETVAL 1694 RETVAL
1690 1695
1691int 1696int
1692nready() 1697nready ()
1693 PROTOTYPE:
1694 CODE: 1698 CODE:
1695 RETVAL = get_nready (); 1699 RETVAL = eio_nready ();
1696 OUTPUT: 1700 OUTPUT:
1697 RETVAL 1701 RETVAL
1698 1702
1699int 1703int
1700npending() 1704npending ()
1701 PROTOTYPE:
1702 CODE: 1705 CODE:
1703 RETVAL = get_npending (); 1706 RETVAL = eio_npending ();
1704 OUTPUT: 1707 OUTPUT:
1705 RETVAL 1708 RETVAL
1706 1709
1707int 1710int
1708nthreads() 1711nthreads ()
1709 PROTOTYPE:
1710 CODE: 1712 CODE:
1711 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1713 RETVAL = eio_nthreads ();
1712 RETVAL = started;
1713 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714 OUTPUT: 1714 OUTPUT:
1715 RETVAL 1715 RETVAL
1716 1716
1717int
1718fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1719 CODE:
1720 RETVAL = posix_fadvise (fh, offset, length, advice);
1721 OUTPUT:
1722 RETVAL
1723
1724IV
1725sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1726 CODE:
1727 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1728 OUTPUT:
1729 RETVAL
1730
1731void
1732mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1733 PPCODE:
1734 sv_unmagic (scalar, MMAP_MAGIC);
1735{
1736 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1737 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1738 if (addr == (void *)-1)
1739 XSRETURN_NO;
1740
1741 sv_force_normal (scalar);
1742
1743 /* we store the length in mg_obj, as namlen is I32 :/ */
1744 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1745 ->mg_obj = (SV *)length;
1746
1747 SvUPGRADE (scalar, SVt_PV); /* nop... */
1748
1749 if (!(prot & PROT_WRITE))
1750 SvREADONLY_on (scalar);
1751
1752 if (SvLEN (scalar))
1753 Safefree (SvPVX (scalar));
1754
1755 SvPVX (scalar) = (char *)addr;
1756 SvCUR_set (scalar, length);
1757 SvLEN_set (scalar, 0);
1758 SvPOK_only (scalar);
1759
1760 XSRETURN_YES;
1761}
1762
1763void
1764munmap (SV *scalar)
1765 CODE:
1766 sv_unmagic (scalar, MMAP_MAGIC);
1767
1768int
1769madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1770 ALIAS:
1771 mprotect = 1
1772 CODE:
1773{
1774 STRLEN svlen;
1775 void *addr = SvPVbyte (scalar, svlen);
1776 size_t len = SvUV (length);
1777
1778 if (offset < 0)
1779 offset += svlen;
1780
1781 if (offset < 0 || offset > svlen)
1782 croak ("offset outside of scalar");
1783
1784 if (!SvOK (length) || len + offset > svlen)
1785 len = svlen - offset;
1786
1787 addr = (void *)(((intptr_t)addr) + offset);
1788 eio_page_align (&addr, &len);
1789
1790 switch (ix)
1791 {
1792 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1793 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1794 }
1795}
1796 OUTPUT:
1797 RETVAL
1798
1799int
1800munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1801 CODE:
1802{
1803 STRLEN svlen;
1804 void *addr = SvPVbyte (scalar, svlen);
1805 size_t len = SvUV (length);
1806
1807 if (offset < 0)
1808 offset += svlen;
1809
1810 if (offset < 0 || offset > svlen)
1811 croak ("offset outside of scalar");
1812
1813 if (!SvOK (length) || len + offset > svlen)
1814 len = svlen - offset;
1815
1816 addr = (void *)(((intptr_t)addr) + offset);
1817 eio_page_align (&addr, &len);
1818#if _POSIX_MEMLOCK_RANGE
1819 RETVAL = munlock (addr, len);
1820#else
1821 RETVAL = EIO_ENOSYS ();
1822#endif
1823}
1824 OUTPUT:
1825 RETVAL
1826
1827int
1828munlockall ()
1829 CODE:
1830#if _POSIX_MEMLOCK
1831 munlockall ();
1832#else
1833 RETVAL = EIO_ENOSYS ();
1834#endif
1835 OUTPUT:
1836 RETVAL
1837
1838int
1839splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1840 CODE:
1841{
1842#if HAVE_LINUX_SPLICE
1843 loff_t off_in_, off_out_;
1844 RETVAL = splice (
1845 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1846 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1847 length, flags
1848 );
1849#else
1850 RETVAL = EIO_ENOSYS ();
1851#endif
1852}
1853 OUTPUT:
1854 RETVAL
1855
1856int
1857tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1858 CODE:
1859#if HAVE_LINUX_SPLICE
1860 RETVAL = tee (rfh, wfh, length, flags);
1861#else
1862 RETVAL = EIO_ENOSYS ();
1863#endif
1864 OUTPUT:
1865 RETVAL
1866
1867void _on_next_submit (SV *cb)
1868 CODE:
1869 SvREFCNT_dec (on_next_submit);
1870 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1871
1717PROTOTYPES: DISABLE 1872PROTOTYPES: DISABLE
1873
1874MODULE = IO::AIO PACKAGE = IO::AIO::WD
1875
1876BOOT:
1877{
1878 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1879 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1880}
1881
1882void
1883DESTROY (SV *self)
1884 CODE:
1885{
1886 aio_wd wd = SvAIO_WD (self);
1887#if HAVE_AT
1888 {
1889 SV *callback = &PL_sv_undef;
1890 dREQ; /* clobbers next_pri :/ */
1891 next_pri = req->pri; /* restore next_pri */
1892 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1893 req->type = EIO_WD_CLOSE;
1894 req->wd = wd;
1895 REQ_SEND;
1896 }
1897#else
1898 eio_wd_close_sync (wd);
1899#endif
1900}
1718 1901
1719MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1902MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720 1903
1721void 1904void
1722cancel (aio_req_ornot req) 1905cancel (aio_req_ornot req)
1723 CODE: 1906 CODE:
1724 req_cancel (req); 1907 eio_cancel (req);
1725 1908
1726void 1909void
1727cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1910cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728 CODE: 1911 PPCODE:
1912{
1913 if (GIMME_V != G_VOID)
1914 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1915
1916 if (items > 1)
1917 {
1918 SV *cb_cv =get_cb (callback);
1919
1729 SvREFCNT_dec (req->callback); 1920 SvREFCNT_dec (req->callback);
1730 req->callback = newSVsv (callback); 1921 req->callback = SvREFCNT_inc (cb_cv);
1922 }
1923}
1731 1924
1732MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1925MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733 1926
1734void 1927void
1735add (aio_req grp, ...) 1928add (aio_req grp, ...)
1736 PPCODE: 1929 PPCODE:
1737{ 1930{
1738 int i; 1931 int i;
1739 aio_req req;
1740 1932
1741 if (grp->int1 == 2) 1933 if (grp->int1 == 2)
1742 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1934 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743 1935
1744 for (i = 1; i < items; ++i ) 1936 for (i = 1; i < items; ++i )
1745 { 1937 {
1938 aio_req req;
1939
1746 if (GIMME_V != G_VOID) 1940 if (GIMME_V != G_VOID)
1747 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1941 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748 1942
1749 req = SvAIO_REQ (ST (i)); 1943 req = SvAIO_REQ (ST (i));
1750 1944
1751 if (req) 1945 if (req)
1752 { 1946 eio_grp_add (grp, req);
1753 ++grp->size;
1754 req->grp = grp;
1755
1756 req->grp_prev = 0;
1757 req->grp_next = grp->grp_first;
1758
1759 if (grp->grp_first)
1760 grp->grp_first->grp_prev = req;
1761
1762 grp->grp_first = req;
1763 }
1764 } 1947 }
1765} 1948}
1766 1949
1767void 1950void
1768cancel_subs (aio_req_ornot req) 1951cancel_subs (aio_req_ornot req)
… …
1777 AV *av; 1960 AV *av;
1778 1961
1779 grp->errorno = errno; 1962 grp->errorno = errno;
1780 1963
1781 av = newAV (); 1964 av = newAV ();
1965 av_extend (av, items - 1);
1782 1966
1783 for (i = 1; i < items; ++i ) 1967 for (i = 1; i < items; ++i )
1784 av_push (av, newSVsv (ST (i))); 1968 av_push (av, newSVsv (ST (i)));
1785 1969
1786 SvREFCNT_dec (grp->sv1); 1970 SvREFCNT_dec (grp->sv1);
… …
1793 grp->errorno = errorno; 1977 grp->errorno = errorno;
1794 1978
1795void 1979void
1796limit (aio_req grp, int limit) 1980limit (aio_req grp, int limit)
1797 CODE: 1981 CODE:
1798 grp->int2 = limit; 1982 eio_grp_limit (grp, limit);
1799 aio_grp_feed (grp);
1800 1983
1801void 1984void
1802feed (aio_req grp, SV *callback=&PL_sv_undef) 1985feed (aio_req grp, SV *callback=&PL_sv_undef)
1803 CODE: 1986 CODE:
1804{ 1987{
1805 SvREFCNT_dec (grp->sv2); 1988 SvREFCNT_dec (grp->sv2);
1806 grp->sv2 = newSVsv (callback); 1989 grp->sv2 = newSVsv (callback);
1990 grp->feed = aio_grp_feed;
1807 1991
1808 if (grp->int2 <= 0) 1992 if (grp->int2 <= 0)
1809 grp->int2 = 2; 1993 grp->int2 = 2;
1810 1994
1811 aio_grp_feed (grp); 1995 eio_grp_limit (grp, grp->int2);
1812} 1996}
1813 1997

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