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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 1.250 by root, Fri Sep 22 05:20:39 2017 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
34# if __linux
35# include <sys/sendfile.h>
36# elif __freebsd
37# include <sys/socket.h>
38# include <sys/uio.h> 21# include <sys/mman.h>
39# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
40# include <sys/socket.h> 86 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
43# else 151# else
44# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 153# endif
46#endif 154#endif
47 155
48/* number of seconds after which idle threads exit */ 156/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 157/* also provides const_iv_ and const_niv_ macros for them */
158#include "def0.h"
50 159
51/* used for struct dirent, AIX doesn't provide it */ 160#ifndef makedev
52#ifndef NAME_MAX 161# 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 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
79#endif 165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
80 169
81/* buffer size for various temporary buffers */ 170#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
83 173
84#define dBUF \ 174/*****************************************************************************/
85 char *aio_buf; \ 175
86 LOCK (wrklock); \ 176static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 177fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 178{
89 if (!aio_buf) \ 179 req->result = -1;
180
181#if HAVE_FIEMAP
182 /* assume some c99 */
183 struct fiemap *fiemap = 0;
184 size_t end_offset;
185 int count = req->int3;
186
187 req->flags |= EIO_FLAG_PTR1_FREE;
188
189 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
190 /* increase in 3.5kb steps */
191 if (count < 0)
192 count = 8;
193
194 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
195 errno = ENOMEM;
196 if (!fiemap)
90 return -1; 197 return;
91 198
92enum { 199 req->ptr1 = fiemap;
93 REQ_QUIT,
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};
105 200
106#define AIO_REQ_KLASS "IO::AIO::REQ" 201 fiemap->fm_start = req->offs;
107#define AIO_GRP_KLASS "IO::AIO::GRP" 202 fiemap->fm_length = req->size;
203 fiemap->fm_flags = req->int2;
204 fiemap->fm_extent_count = count;
108 205
109typedef struct aio_cb 206 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
110{ 207 return;
111 struct aio_cb *volatile next;
112 208
113 SV *callback, *fh; 209 if (req->int3 >= 0 /* not autosizing */
114 SV *sv1, *sv2; 210 || !fiemap->fm_mapped_extents /* no more extents */
115 void *ptr1, *ptr2; 211 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
116 Stat_t *statdata; 212 goto done;
117 off_t offs;
118 size_t size;
119 ssize_t result;
120 213
121 STRLEN stroffset; 214 /* else we have to loop -
122 int type; 215 * it would be tempting (actually I tried that first) to just query the
123 int int1, int2; 216 * number of extents needed, but linux often feels like not returning all
124 int errorno; 217 * extents, without telling us it left any out. this complicates
125 mode_t mode; /* open */ 218 * this quite a bit.
219 */
126 220
127 unsigned char flags; 221 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
128 unsigned char pri;
129 222
130 SV *self; /* the perl counterpart of this request, if any */ 223 for (;;)
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;
140typedef aio_cb *aio_req_ornot;
141
142enum {
143 PRI_MIN = -4,
144 PRI_MAX = 4,
145
146 DEFAULT_PRI = 0,
147 PRI_BIAS = -PRI_MIN,
148 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149};
150
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 { 224 {
197 closedir (wrk->dirp); 225 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
198 wrk->dirp = 0; 226 char scratch[3072];
199 } 227 struct fiemap *incmap = (struct fiemap *)scratch;
200 228
201 if (wrk->dbuf) 229 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
202 { 230 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
203 free (wrk->dbuf); 231 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
204 wrk->dbuf = 0; 232 incmap->fm_flags = fiemap->fm_flags;
205 } 233 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
206}
207 234
208static void worker_free (worker *wrk) 235 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
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; 236 return;
303 237
304 --q->size; 238 if (!incmap->fm_mapped_extents)
239 goto done;
305 240
306 for (pri = NUM_PRI; pri--; ) 241 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
307 { 242 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
308 aio_req req = q->qs[pri]; 243 errno = ENOMEM;
309
310 if (req) 244 if (!fiemap)
245 return;
246
247 req->ptr1 = fiemap;
248
249 for (count = 0; count < incmap->fm_mapped_extents; ++count)
311 { 250 {
312 if (!(q->qs[pri] = req->next)) 251 struct fiemap_extent *e = incmap->fm_extents + count;
313 q->qe[pri] = 0;
314 252
315 return req; 253 if (e->fe_logical + e->fe_length >= end_offset)
254 goto done;
255
256 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
257
258 if (e->fe_flags & FIEMAP_EXTENT_LAST)
259 goto done;
260
316 } 261 }
317 } 262 }
318 263
319 abort (); 264done:
320} 265 req->result = 0;
321 266
322static int poll_cb (); 267#else
323static void req_invoke (aio_req req); 268 errno = ENOSYS;
269#endif
270}
271
272/*****************************************************************************/
273
274enum {
275 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
276};
277
278typedef eio_req *aio_req;
279typedef eio_req *aio_req_ornot;
280typedef eio_wd aio_wd;
281
282static SV *on_next_submit;
283static int next_pri = EIO_PRI_DEFAULT;
284static int max_outstanding;
285
286static s_epipe respipe;
287
324static void req_free (aio_req req); 288static void req_destroy (aio_req req);
325static void req_cancel (aio_req req); 289static void req_cancel (aio_req req);
326 290
291static void
292want_poll (void)
293{
294 /* write a dummy byte to the pipe so fh becomes ready */
295 s_epipe_signal (&respipe);
296}
297
298static void
299done_poll (void)
300{
301 /* read any signals sent by the worker threads */
302 s_epipe_drain (&respipe);
303}
304
327/* must be called at most once */ 305/* must be called at most once */
328static SV *req_sv (aio_req req, const char *klass) 306static SV *
307req_sv (aio_req req, HV *stash)
329{ 308{
330 if (!req->self) 309 if (!req->self)
331 { 310 {
332 req->self = (SV *)newHV (); 311 req->self = (SV *)newHV ();
333 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 312 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334 } 313 }
335 314
336 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 315 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337} 316}
338 317
339static aio_req SvAIO_REQ (SV *sv) 318static SV *
319newSVaio_wd (aio_wd wd)
320{
321 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
322}
323
324static aio_req
325SvAIO_REQ (SV *sv)
340{ 326{
341 MAGIC *mg; 327 MAGIC *mg;
342 328
343 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 329 if (!SvROK (sv)
330 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
331 || (SvSTASH (SvRV (sv)) != aio_grp_stash
332 && SvSTASH (SvRV (sv)) != aio_req_stash
333 && !sv_derived_from (sv, "IO::AIO::REQ")))
344 croak ("object of class " AIO_REQ_KLASS " expected"); 334 croak ("object of class IO::AIO::REQ expected");
345 335
346 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 336 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347 337
348 return mg ? (aio_req)mg->mg_ptr : 0; 338 return mg ? (aio_req)mg->mg_ptr : 0;
349} 339}
350 340
341static aio_wd
342SvAIO_WD (SV *sv)
343{
344 if (!SvROK (sv)
345 || SvTYPE (SvRV (sv)) != SVt_PVMG
346 || SvSTASH (SvRV (sv)) != aio_wd_stash)
347 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
348
349 return (aio_wd)(long)SvIVX (SvRV (sv));
350}
351
352static SV *
353newmortalFH (int fd, int flags)
354{
355 if (fd < 0)
356 return &PL_sv_undef;
357
358 GV *gv = (GV *)sv_newmortal ();
359 char sym[64];
360 int symlen;
361
362 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
363 gv_init (gv, aio_stash, sym, symlen, 0);
364
365 symlen = snprintf (
366 sym,
367 sizeof (sym),
368 "%s&=%d",
369 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
370 fd
371 );
372
373 return do_open (gv, sym, symlen, 0, 0, 0, 0)
374 ? (SV *)gv : &PL_sv_undef;
375}
376
377static void
351static void aio_grp_feed (aio_req grp) 378aio_grp_feed (aio_req grp)
352{ 379{
353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 380 if (grp->sv2 && SvOK (grp->sv2))
354 { 381 {
355 int old_len = grp->size;
356
357 if (grp->sv2 && SvOK (grp->sv2))
358 {
359 dSP; 382 dSP;
360 383
361 ENTER; 384 ENTER;
362 SAVETMPS; 385 SAVETMPS;
363 PUSHMARK (SP); 386 PUSHMARK (SP);
364 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 387 XPUSHs (req_sv (grp, aio_grp_stash));
365 PUTBACK; 388 PUTBACK;
366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 389 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367 SPAGAIN; 390 SPAGAIN;
368 FREETMPS; 391 FREETMPS;
369 LEAVE; 392 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 } 393 }
380} 394}
381 395
382static void aio_grp_dec (aio_req grp) 396static void
397req_submit (eio_req *req)
383{ 398{
384 --grp->size; 399 eio_submit (req);
385 400
386 /* call feeder, if applicable */ 401 if (expect_false (on_next_submit))
387 aio_grp_feed (grp);
388
389 /* finish, if done */
390 if (!grp->size && grp->int1)
391 { 402 {
392 req_invoke (grp); 403 dSP;
393 req_free (grp); 404 SV *cb = sv_2mortal (on_next_submit);
405
406 on_next_submit = 0;
407
408 PUSHMARK (SP);
409 PUTBACK;
410 call_sv (cb, G_DISCARD | G_EVAL);
394 } 411 }
395} 412}
396 413
414static int
397static void req_invoke (aio_req req) 415req_invoke (eio_req *req)
398{ 416{
399 dSP;
400
401 if (req->flags & FLAG_DATA_RO_OFF) 417 if (req->flags & FLAG_SV2_RO_OFF)
402 SvREADONLY_off (req->sv1); 418 SvREADONLY_off (req->sv2);
403 419
404 if (req->statdata) 420 if (!EIO_CANCELLED (req) && req->callback)
405 { 421 {
406 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 422 dSP;
407 PL_laststatval = req->result; 423 static SV *sv_result_cache; /* caches the result integer SV */
408 PL_statcache = *(req->statdata); 424 SV *sv_result;
409 }
410 425
411 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412 {
413 ENTER; 426 ENTER;
414 SAVETMPS; 427 SAVETMPS;
415 PUSHMARK (SP); 428 PUSHMARK (SP);
416 EXTEND (SP, 1); 429 EXTEND (SP, 1);
417 430
431 /* do not recreate the result IV from scratch each time */
432 if (expect_true (sv_result_cache))
433 {
434 sv_result = sv_result_cache; sv_result_cache = 0;
435 SvIV_set (sv_result, req->result);
436 SvIOK_only (sv_result);
437 }
438 else
439 {
440 sv_result = newSViv (req->result);
441 SvREADONLY_on (sv_result);
442 }
443
418 switch (req->type) 444 switch (req->type)
419 { 445 {
446 case EIO_WD_OPEN:
447 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
448 break;
449
420 case REQ_READDIR: 450 case EIO_READDIR:
421 { 451 {
422 SV *rv = &PL_sv_undef; 452 SV *rv = &PL_sv_undef;
423 453
424 if (req->result >= 0) 454 if (req->result >= 0)
425 { 455 {
426 int i; 456 int i;
427 char *buf = req->ptr2; 457 char *names = (char *)req->ptr2;
458 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428 AV *av = newAV (); 459 AV *av = newAV ();
429 460
430 av_extend (av, req->result - 1); 461 av_extend (av, req->result - 1);
431 462
432 for (i = 0; i < req->result; ++i) 463 for (i = 0; i < req->result; ++i)
433 { 464 {
434 SV *sv = newSVpv (buf, 0); 465 if (req->int1 & EIO_READDIR_DENTS)
466 {
467 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435 468
469 if (req->int1 & EIO_READDIR_CUSTOM2)
470 {
471 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
472 AV *avent = newAV ();
473
474 av_extend (avent, 2);
475
476 if (!sv_type [ent->type])
477 {
478 sv_type [ent->type] = newSViv (ent->type);
479 SvREADONLY_on (sv_type [ent->type]);
480 }
481
482 av_store (avent, 0, namesv);
483 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
484 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
485
486 av_store (av, i, newRV_noinc ((SV *)avent));
487 }
488 else
436 av_store (av, i, sv); 489 av_store (av, i, namesv);
490
491 ++ent;
492 }
493 else
494 {
495 SV *name = newSVpv (names, 0);
496 av_store (av, i, name);
437 buf += SvCUR (sv) + 1; 497 names += SvCUR (name) + 1;
498 }
438 } 499 }
439 500
440 rv = sv_2mortal (newRV_noinc ((SV *)av)); 501 rv = sv_2mortal (newRV_noinc ((SV *)av));
441 } 502 }
442 503
443 PUSHs (rv); 504 PUSHs (rv);
505
506 if (req->int1 & EIO_READDIR_CUSTOM1)
507 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444 } 508 }
445 break; 509 break;
446 510
447 case REQ_OPEN: 511 case EIO_OPEN:
512 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
513 break;
514
515 case EIO_STATVFS:
516 case EIO_FSTATVFS:
448 { 517 {
449 /* convert fd to fh */ 518 SV *rv = &PL_sv_undef;
450 SV *fh; 519
520#ifndef _WIN32
521 if (req->result >= 0)
522 {
523 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
524 HV *hv = newHV ();
525 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
526 * chooses to make it a struct.
527 */
528 unsigned long fsid = 0;
529 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
451 530
452 PUSHs (sv_2mortal (newSViv (req->result))); 531 rv = sv_2mortal (newRV_noinc ((SV *)hv));
453 PUTBACK;
454 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
455 SPAGAIN;
456 532
457 fh = SvREFCNT_inc (POPs); 533 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
534 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
535 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
536 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
537 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
538 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
539 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
540 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
541 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
542 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
543 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
544 }
545#endif
458 546
459 PUSHMARK (SP); 547 PUSHs (rv);
460 XPUSHs (sv_2mortal (fh));
461 } 548 }
549
462 break; 550 break;
463 551
464 case REQ_GROUP: 552 case EIO_GROUP:
465 req->int1 = 2; /* mark group as finished */ 553 req->int1 = 2; /* mark group as finished */
466 554
467 if (req->sv1) 555 if (req->sv1)
468 { 556 {
469 int i; 557 int i;
… …
473 for (i = 0; i <= AvFILL (av); ++i) 561 for (i = 0; i <= AvFILL (av); ++i)
474 PUSHs (*av_fetch (av, i, 0)); 562 PUSHs (*av_fetch (av, i, 0));
475 } 563 }
476 break; 564 break;
477 565
478 case REQ_NOP: 566 case EIO_NOP:
479 case REQ_BUSY: 567 case EIO_BUSY:
480 break; 568 break;
481 569
482 case REQ_READLINK: 570 case EIO_READLINK:
571 case EIO_REALPATH:
483 if (req->result > 0) 572 if (req->result > 0)
573 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
574 break;
575
576 case EIO_STAT:
577 case EIO_LSTAT:
578 case EIO_FSTAT:
579 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
580
581 if (!(PL_laststatval = req->result))
582 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
583 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
584
585 PUSHs (sv_result);
586 break;
587
588 case EIO_SEEK:
589 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
590 break;
591
592 case EIO_READ:
593 {
594 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
595 *SvEND (req->sv2) = 0;
596 SvPOK_only (req->sv2);
597 SvSETMAGIC (req->sv2);
598 PUSHs (sv_result);
599 }
600 break;
601
602 case EIO_CUSTOM:
603 if (req->feed == fiemap)
484 { 604 {
485 SvCUR_set (req->sv1, req->result); 605#if HAVE_FIEMAP
486 *SvEND (req->sv1) = 0;
487 PUSHs (req->sv1); 606 if (!req->result)
607 {
608 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
609
610 if (fiemap->fm_extent_count)
611 {
612 AV *av = newAV ();
613 int i;
614
615 while (fiemap->fm_mapped_extents)
616 {
617 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
618 AV *ext_av = newAV ();
619
620 av_store (ext_av, 3, newSVuv (extent->fe_flags));
621 av_store (ext_av, 2, newSVval64 (extent->fe_length));
622 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
623 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
624
625 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
626 }
627
628 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
629 }
630 else
631 {
632 SvIV_set (sv_result, fiemap->fm_mapped_extents);
633 PUSHs (sv_result);
634 }
635 }
636#endif
488 } 637 }
638 else
639 PUSHs (sv_result);
489 break; 640 break;
490 641
491 case REQ_READ: 642 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)); 643 if (req->result > 0)
493 *SvEND (req->sv1) = 0; 644 SvIV_set (sv_result, 0);
494 /* fall through */ 645 /* FALLTHROUGH */
646
495 default: 647 default:
496 PUSHs (sv_2mortal (newSViv (req->result))); 648 PUSHs (sv_result);
497 break; 649 break;
498 } 650 }
499 651
500 errno = req->errorno; 652 errno = req->errorno;
501 653
502 PUTBACK; 654 PUTBACK;
503 call_sv (req->callback, G_VOID | G_EVAL); 655 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504 SPAGAIN; 656 SPAGAIN;
657
658 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
659 SvREFCNT_dec (sv_result);
660 else
661 sv_result_cache = sv_result;
505 662
506 FREETMPS; 663 FREETMPS;
507 LEAVE; 664 LEAVE;
665
666 PUTBACK;
508 } 667 }
509 668
510 if (req->grp) 669 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} 670}
530 671
531static void req_free (aio_req req) 672static void
673req_destroy (aio_req req)
532{ 674{
533 if (req->self) 675 if (req->self)
534 { 676 {
535 sv_unmagic (req->self, PERL_MAGIC_ext); 677 sv_unmagic (req->self, PERL_MAGIC_ext);
536 SvREFCNT_dec (req->self); 678 SvREFCNT_dec (req->self);
537 } 679 }
538 680
539 SvREFCNT_dec (req->fh);
540 SvREFCNT_dec (req->sv1); 681 SvREFCNT_dec (req->sv1);
541 SvREFCNT_dec (req->sv2); 682 SvREFCNT_dec (req->sv2);
683 SvREFCNT_dec (req->sv3);
684 SvREFCNT_dec (req->sv4);
542 SvREFCNT_dec (req->callback); 685 SvREFCNT_dec (req->callback);
543 Safefree (req->statdata);
544 686
545 if (req->type == REQ_READDIR)
546 free (req->ptr2);
547
548 Safefree (req); 687 free (req);
549} 688}
550 689
690static void
551static void req_cancel_subs (aio_req grp) 691req_cancel_subs (aio_req grp)
552{ 692{
553 aio_req sub;
554
555 if (grp->type != REQ_GROUP) 693 if (grp->type != EIO_GROUP)
556 return; 694 return;
557 695
558 SvREFCNT_dec (grp->sv2); 696 SvREFCNT_dec (grp->sv2);
559 grp->sv2 = 0; 697 grp->sv2 = 0;
560 698
561 for (sub = grp->grp_first; sub; sub = sub->grp_next) 699 eio_grp_cancel (grp);
562 req_cancel (sub);
563} 700}
564 701
565static void req_cancel (aio_req req) 702static void ecb_cold
703create_respipe (void)
566{ 704{
567 req->flags |= FLAG_CANCELLED; 705 if (s_epipe_renew (&respipe))
568 706 croak ("IO::AIO: unable to initialize result pipe");
569 req_cancel_subs (req);
570} 707}
571 708
572static void *aio_proc(void *arg); 709static void
573 710poll_wait (void)
574static void start_thread (void)
575{ 711{
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) 712 while (eio_nreqs ())
682 { 713 {
683 int size; 714 int size;
684 if (WORDACCESS_UNSAFE) LOCK (reslock); 715
716 X_LOCK (EIO_POOL->reslock);
685 size = res_queue.size; 717 size = EIO_POOL->res_queue.size;
686 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 718 X_UNLOCK (EIO_POOL->reslock);
687 719
688 if (size) 720 if (size)
689 return; 721 return;
690 722
691 maybe_start_thread (); 723 etp_maybe_start_thread (EIO_POOL);
692 724
693 FD_ZERO(&rfd); 725 s_epipe_wait (&respipe);
694 FD_SET(respipe [0], &rfd);
695
696 select (respipe [0] + 1, &rfd, 0, 0, 0);
697 } 726 }
698} 727}
699 728
700static int poll_cb () 729static int
730poll_cb (void)
701{ 731{
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 (;;) 732 for (;;)
713 { 733 {
714 for (;;) 734 int res = eio_poll ();
735
736 if (res > 0)
737 croak (0);
738
739 if (!max_outstanding || max_outstanding > eio_nreqs ())
740 return res;
741
742 poll_wait ();
743 }
744}
745
746static void ecb_cold
747reinit (void)
748{
749 create_respipe ();
750
751 if (eio_init (want_poll, done_poll) < 0)
752 croak ("IO::AIO: unable to initialise eio library");
753}
754
755/*****************************************************************************/
756
757#if !_POSIX_MAPPED_FILES
758# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
759# define munmap(addr,length) EIO_ENOSYS ()
760#endif
761
762#if !_POSIX_MEMORY_PROTECTION
763# define mprotect(addr,len,prot) EIO_ENOSYS ()
764#endif
765
766#define MMAP_MAGIC PERL_MAGIC_ext
767
768static int ecb_cold
769mmap_free (pTHX_ SV *sv, MAGIC *mg)
770{
771 int old_errno = errno;
772 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
773 errno = old_errno;
774
775 mg->mg_obj = 0; /* just in case */
776
777 SvREADONLY_off (sv);
778
779 if (SvPVX (sv) != mg->mg_ptr)
780 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
781
782 SvCUR_set (sv, 0);
783 SvPVX (sv) = 0;
784 SvOK_off (sv);
785
786 return 0;
787}
788
789static MGVTBL mmap_vtbl = {
790 0, 0, 0, 0, mmap_free
791};
792
793/*****************************************************************************/
794
795static SV *
796get_cb (SV *cb_sv)
797{
798 SvGETMAGIC (cb_sv);
799 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
800}
801
802static aio_req ecb_noinline
803dreq (SV *callback)
804{
805 SV *cb_cv;
806 aio_req req;
807 int req_pri = next_pri;
808 next_pri = EIO_PRI_DEFAULT;
809
810 cb_cv = get_cb (callback);
811
812 req = calloc (sizeof (*req), 1);
813 if (!req)
814 croak ("out of memory during eio_req allocation");
815
816 req->callback = SvREFCNT_inc (cb_cv);
817 req->pri = req_pri;
818
819 return req;
820}
821
822#define dREQ \
823 aio_req req = dreq (callback); \
824
825#define REQ_SEND \
826 PUTBACK; \
827 req_submit (req); \
828 SPAGAIN; \
829 \
830 if (GIMME_V != G_VOID) \
831 XPUSHs (req_sv (req, aio_req_stash));
832
833ecb_inline void
834req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
835{
836 if (expect_false (SvROK (path)))
837 {
838 SV *rv = SvRV (path);
839 SV *wdob;
840
841 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715 { 842 {
716 maybe_start_thread (); 843 path = AvARRAY (rv)[1];
844 wdob = AvARRAY (rv)[0];
717 845
718 LOCK (reslock); 846 if (SvOK (wdob))
719 req = reqq_shift (&res_queue);
720
721 if (req)
722 { 847 {
723 --npending; 848 *wd = SvAIO_WD (wdob);
724 849 *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 } 850 }
746 else 851 else
747 { 852 *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 } 853 }
854 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
855 {
856 *wd = (aio_wd)(long)SvIVX (rv);
857 *wdsv = SvREFCNT_inc_NN (rv);
858 *ptr = ".";
859 return; /* path set to "." */
860 }
861 else
862 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
863 }
766 864
767 if (nreqs <= max_outstanding) 865 *pathsv = newSVsv (path);
866 *ptr = SvPVbyte_nolen (*pathsv);
867}
868
869static void ecb_noinline
870req_set_path1 (aio_req req, SV *path)
871{
872 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
873}
874
875static void ecb_noinline
876req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
877{
878 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
879
880 switch (SvTYPE (rv))
881 {
882 case SVt_PVIO:
883 case SVt_PVLV:
884 case SVt_PVGV:
885 req->type = type_fh;
886 req->sv1 = newSVsv (fh_or_path);
887 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
768 break; 888 break;
769 889
770 poll_wait (); 890 default:
771 891 req->type = type_path;
772 ++maxreqs; 892 req_set_path1 (req, fh_or_path);
893 break;
773 } 894 }
774
775 return count;
776} 895}
777 896
778static void create_pipe () 897XS(boot_IO__AIO) ecb_cold;
779{
780 if (pipe (respipe))
781 croak ("unable to initialize result pipe");
782 898
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 899MODULE = IO::AIO PACKAGE = IO::AIO
1255 900
1256PROTOTYPES: ENABLE 901PROTOTYPES: ENABLE
1257 902
1258BOOT: 903BOOT:
1259{ 904{
905 static const struct {
906 const char *name;
907 IV iv;
908 } *civ, const_iv[] = {
909# define const_niv(name, value) { # name, (IV) value },
910# define const_iv(name) { # name, (IV) name },
911# define const_eio(name) { # name, (IV) EIO_ ## name },
912
913 /* you have to re-run ./gendef0 after adding/removing any constants here */
914 /* the first block can be undef if missing */
915 const_iv (ENOSYS)
916 const_iv (EXDEV)
917 const_iv (EBADR)
918
919 /* for lseek */
920 const_iv (SEEK_DATA)
921 const_iv (SEEK_HOLE)
922
923 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
924 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
925 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
926 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
927 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
928 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
929
930 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
931 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
932 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
933 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
934 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
935
936 /* the second block will be 0 when missing */
937 const_iv (O_RDONLY)
938 const_iv (O_WRONLY)
939 const_iv (O_RDWR)
940 const_iv (O_CREAT)
941 const_iv (O_TRUNC)
942 const_iv (O_EXCL)
943 const_iv (O_APPEND)
944
945 const_iv (O_ASYNC)
946 const_iv (O_DIRECT)
947 const_iv (O_NOATIME)
948
949 const_iv (O_CLOEXEC)
950 const_iv (O_NOCTTY)
951 const_iv (O_NOFOLLOW)
952 const_iv (O_NONBLOCK)
953 const_iv (O_EXEC)
954 const_iv (O_SEARCH)
955 const_iv (O_DIRECTORY)
956 const_iv (O_DSYNC)
957 const_iv (O_RSYNC)
958 const_iv (O_SYNC)
959 const_iv (O_PATH)
960 const_iv (O_TMPFILE)
961 const_iv (O_TTY_INIT)
962
963 const_iv (S_IFIFO)
964 const_iv (S_IFCHR)
965 const_iv (S_IFBLK)
966 const_iv (S_IFLNK)
967 const_iv (S_IFREG)
968 const_iv (S_IFDIR)
969 const_iv (S_IFWHT)
970 const_iv (S_IFSOCK)
971 const_iv (S_IFMT)
972
973 const_iv (ST_RDONLY)
974 const_iv (ST_NOSUID)
975 const_iv (ST_NODEV)
976 const_iv (ST_NOEXEC)
977 const_iv (ST_SYNCHRONOUS)
978 const_iv (ST_MANDLOCK)
979 const_iv (ST_WRITE)
980 const_iv (ST_APPEND)
981 const_iv (ST_IMMUTABLE)
982 const_iv (ST_NOATIME)
983 const_iv (ST_NODIRATIME)
984 const_iv (ST_RELATIME)
985
986 const_iv (PROT_NONE)
987 const_iv (PROT_EXEC)
988 const_iv (PROT_READ)
989 const_iv (PROT_WRITE)
990
991 const_iv (MAP_PRIVATE)
992 const_iv (MAP_SHARED)
993 const_iv (MAP_FIXED)
994 const_iv (MAP_ANONYMOUS)
995
996 /* linuxish */
997 const_iv (MAP_LOCKED)
998 const_iv (MAP_NORESERVE)
999 const_iv (MAP_POPULATE)
1000 const_iv (MAP_NONBLOCK)
1001 const_iv (MAP_GROWSDOWN)
1002 const_iv (MAP_32BIT)
1003 const_iv (MAP_HUGETLB)
1004 const_iv (MAP_STACK)
1005
1006 const_iv (F_DUPFD_CLOEXEC)
1007
1008 const_iv (F_OFD_GETLK)
1009 const_iv (F_OFD_SETLK)
1010 const_iv (F_OFD_GETLKW)
1011
1012 const_iv (FIFREEZE)
1013 const_iv (FITHAW)
1014 const_iv (FITRIM)
1015 const_iv (FICLONE)
1016 const_iv (FICLONERANGE)
1017 const_iv (FIDEDUPERANGE)
1018
1019 const_iv (FS_IOC_GETFLAGS)
1020 const_iv (FS_IOC_SETFLAGS)
1021 const_iv (FS_IOC_GETVERSION)
1022 const_iv (FS_IOC_SETVERSION)
1023 const_iv (FS_IOC_FIEMAP)
1024 const_iv (FS_IOC_FSGETXATTR)
1025 const_iv (FS_IOC_FSSETXATTR)
1026 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1027 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1028 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1029
1030 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1031
1032 const_iv (FS_SECRM_FL)
1033 const_iv (FS_UNRM_FL)
1034 const_iv (FS_COMPR_FL)
1035 const_iv (FS_SYNC_FL)
1036 const_iv (FS_IMMUTABLE_FL)
1037 const_iv (FS_APPEND_FL)
1038 const_iv (FS_NODUMP_FL)
1039 const_iv (FS_NOATIME_FL)
1040 const_iv (FS_DIRTY_FL)
1041 const_iv (FS_COMPRBLK_FL)
1042 const_iv (FS_NOCOMP_FL)
1043 const_iv (FS_ENCRYPT_FL)
1044 const_iv (FS_BTREE_FL)
1045 const_iv (FS_INDEX_FL)
1046 const_iv (FS_JOURNAL_DATA_FL)
1047 const_iv (FS_NOTAIL_FL)
1048 const_iv (FS_DIRSYNC_FL)
1049 const_iv (FS_TOPDIR_FL)
1050 const_iv (FS_FL_USER_MODIFIABLE)
1051
1052 const_iv (FS_XFLAG_REALTIME)
1053 const_iv (FS_XFLAG_PREALLOC)
1054 const_iv (FS_XFLAG_IMMUTABLE)
1055 const_iv (FS_XFLAG_APPEND)
1056 const_iv (FS_XFLAG_SYNC)
1057 const_iv (FS_XFLAG_NOATIME)
1058 const_iv (FS_XFLAG_NODUMP)
1059 const_iv (FS_XFLAG_RTINHERIT)
1060 const_iv (FS_XFLAG_PROJINHERIT)
1061 const_iv (FS_XFLAG_NOSYMLINKS)
1062 const_iv (FS_XFLAG_EXTSIZE)
1063 const_iv (FS_XFLAG_EXTSZINHERIT)
1064 const_iv (FS_XFLAG_NODEFRAG)
1065 const_iv (FS_XFLAG_FILESTREAM)
1066 const_iv (FS_XFLAG_DAX)
1067 const_iv (FS_XFLAG_HASATTR)
1068
1069 const_iv (FIEMAP_FLAG_SYNC)
1070 const_iv (FIEMAP_FLAG_XATTR)
1071 const_iv (FIEMAP_FLAGS_COMPAT)
1072 const_iv (FIEMAP_EXTENT_LAST)
1073 const_iv (FIEMAP_EXTENT_UNKNOWN)
1074 const_iv (FIEMAP_EXTENT_DELALLOC)
1075 const_iv (FIEMAP_EXTENT_ENCODED)
1076 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1077 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1078 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1079 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1080 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1081 const_iv (FIEMAP_EXTENT_MERGED)
1082 const_iv (FIEMAP_EXTENT_SHARED)
1083
1084 const_iv (SPLICE_F_MOVE)
1085 const_iv (SPLICE_F_NONBLOCK)
1086 const_iv (SPLICE_F_MORE)
1087 const_iv (SPLICE_F_GIFT)
1088
1089 /* these are libeio constants, and are independent of gendef0 */
1090 const_eio (SEEK_SET)
1091 const_eio (SEEK_CUR)
1092 const_eio (SEEK_END)
1093
1094 const_eio (MCL_FUTURE)
1095 const_eio (MCL_CURRENT)
1096
1097 const_eio (MS_ASYNC)
1098 const_eio (MS_INVALIDATE)
1099 const_eio (MS_SYNC)
1100
1101 const_eio (MT_MODIFY)
1102
1103 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1104 const_eio (SYNC_FILE_RANGE_WRITE)
1105 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1106
1107 const_eio (FALLOC_FL_KEEP_SIZE)
1108 const_eio (FALLOC_FL_PUNCH_HOLE)
1109 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1110 const_eio (FALLOC_FL_ZERO_RANGE)
1111 const_eio (FALLOC_FL_INSERT_RANGE)
1112 const_eio (FALLOC_FL_UNSHARE_RANGE)
1113
1114 const_eio (RENAME_NOREPLACE)
1115 const_eio (RENAME_EXCHANGE)
1116 const_eio (RENAME_WHITEOUT)
1117
1118 const_eio (READDIR_DENTS)
1119 const_eio (READDIR_DIRS_FIRST)
1120 const_eio (READDIR_STAT_ORDER)
1121 const_eio (READDIR_FOUND_UNKNOWN)
1122
1123 const_eio (DT_UNKNOWN)
1124 const_eio (DT_FIFO)
1125 const_eio (DT_CHR)
1126 const_eio (DT_DIR)
1127 const_eio (DT_BLK)
1128 const_eio (DT_REG)
1129 const_eio (DT_LNK)
1130 const_eio (DT_SOCK)
1131 const_eio (DT_WHT)
1132 };
1133
1260 HV *stash = gv_stashpv ("IO::AIO", 1); 1134 aio_stash = gv_stashpv ("IO::AIO" , 1);
1135 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1136 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1137 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1261 1138
1262 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1139 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1263 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1140 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 1141
1269 create_pipe (); 1142 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1270 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1271}
1272 1143
1144 reinit ();
1145}
1146
1273void 1147void
1148reinit ()
1149 PROTOTYPE:
1150
1151void
1274max_poll_reqs (int nreqs) 1152max_poll_reqs (unsigned int nreqs)
1275 PROTOTYPE: $ 1153 PROTOTYPE: $
1276 CODE: 1154 CODE:
1277 max_poll_reqs = nreqs; 1155 eio_set_max_poll_reqs (nreqs);
1278 1156
1279void 1157void
1280max_poll_time (double nseconds) 1158max_poll_time (double nseconds)
1281 PROTOTYPE: $ 1159 PROTOTYPE: $
1282 CODE: 1160 CODE:
1283 max_poll_time = nseconds * AIO_TICKS; 1161 eio_set_max_poll_time (nseconds);
1284 1162
1285void 1163void
1286min_parallel (int nthreads) 1164min_parallel (unsigned int nthreads)
1287 PROTOTYPE: $
1288
1289void
1290max_parallel (int nthreads)
1291 PROTOTYPE: $
1292
1293void
1294max_idle (int nthreads)
1295 PROTOTYPE: $ 1165 PROTOTYPE: $
1296 CODE: 1166 CODE:
1297 set_max_idle (nthreads); 1167 eio_set_min_parallel (nthreads);
1298 1168
1299int 1169void
1300max_outstanding (int maxreqs) 1170max_parallel (unsigned int nthreads)
1301 PROTOTYPE: $ 1171 PROTOTYPE: $
1302 CODE: 1172 CODE:
1303 RETVAL = max_outstanding; 1173 eio_set_max_parallel (nthreads);
1174
1175void
1176max_idle (unsigned int nthreads)
1177 PROTOTYPE: $
1178 CODE:
1179 eio_set_max_idle (nthreads);
1180
1181void
1182idle_timeout (unsigned int seconds)
1183 PROTOTYPE: $
1184 CODE:
1185 eio_set_idle_timeout (seconds);
1186
1187void
1188max_outstanding (unsigned int maxreqs)
1189 PROTOTYPE: $
1190 CODE:
1304 max_outstanding = maxreqs; 1191 max_outstanding = maxreqs;
1305 OUTPUT:
1306 RETVAL
1307 1192
1308void 1193void
1309aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1194aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1310 SV * pathname
1311 int flags
1312 int mode
1313 SV * callback
1314 PROTOTYPE: $$$;$
1315 PPCODE: 1195 PPCODE:
1316{ 1196{
1317 dREQ; 1197 dREQ;
1318 1198
1199 req->type = EIO_WD_OPEN;
1200 req_set_path1 (req, pathname);
1201
1202 REQ_SEND;
1203}
1204
1205void
1206aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1207 PPCODE:
1208{
1209 dREQ;
1210
1319 req->type = REQ_OPEN; 1211 req->type = EIO_OPEN;
1320 req->sv1 = newSVsv (pathname); 1212 req_set_path1 (req, pathname);
1321 req->ptr1 = SvPVbyte_nolen (pathname);
1322 req->int1 = flags; 1213 req->int1 = flags;
1323 req->mode = mode; 1214 req->int2 = mode;
1324 1215
1325 REQ_SEND; 1216 REQ_SEND;
1326} 1217}
1327 1218
1328void 1219void
1329aio_close (fh,callback=&PL_sv_undef) 1220aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1330 SV * fh
1331 SV * callback
1332 PROTOTYPE: $;$
1333 ALIAS: 1221 ALIAS:
1334 aio_close = REQ_CLOSE
1335 aio_fsync = REQ_FSYNC 1222 aio_fsync = EIO_FSYNC
1336 aio_fdatasync = REQ_FDATASYNC 1223 aio_fdatasync = EIO_FDATASYNC
1224 aio_syncfs = EIO_SYNCFS
1337 PPCODE: 1225 PPCODE:
1338{ 1226{
1227 int fd = s_fileno_croak (fh, 0);
1339 dREQ; 1228 dREQ;
1340 1229
1341 req->type = ix; 1230 req->type = ix;
1342 req->fh = newSVsv (fh); 1231 req->sv1 = newSVsv (fh);
1343 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1232 req->int1 = fd;
1344 1233
1345 REQ_SEND (req); 1234 REQ_SEND;
1346} 1235}
1347 1236
1348void 1237void
1238aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1239 PPCODE:
1240{
1241 int fd = s_fileno_croak (fh, 0);
1242 dREQ;
1243
1244 req->type = EIO_SYNC_FILE_RANGE;
1245 req->sv1 = newSVsv (fh);
1246 req->int1 = fd;
1247 req->offs = offset;
1248 req->size = nbytes;
1249 req->int2 = flags;
1250
1251 REQ_SEND;
1252}
1253
1254void
1255aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1256 PPCODE:
1257{
1258 int fd = s_fileno_croak (fh, 0);
1259 dREQ;
1260
1261 req->type = EIO_FALLOCATE;
1262 req->sv1 = newSVsv (fh);
1263 req->int1 = fd;
1264 req->int2 = mode;
1265 req->offs = offset;
1266 req->size = len;
1267
1268 REQ_SEND;
1269}
1270
1271void
1272aio_close (SV *fh, SV *callback = &PL_sv_undef)
1273 PPCODE:
1274{
1275 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1276 int fd = s_fileno_croak (fh, 0);
1277 dREQ;
1278
1279 if (expect_false (close_fd < 0))
1280 {
1281 int pipefd [2];
1282
1283 if (
1284#ifdef _WIN32
1285 _pipe (pipefd, 1, _O_BINARY) < 0
1286#else
1287 pipe (pipefd) < 0
1288 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1289#endif
1290 || close (pipefd [1]) < 0
1291 )
1292 abort (); /*D*/
1293
1294 close_fd = pipefd [0];
1295 }
1296
1297 req->type = EIO_DUP2;
1298 req->int1 = close_fd;
1299 req->sv2 = newSVsv (fh);
1300 req->int2 = fd;
1301
1302 REQ_SEND;
1303}
1304
1305void
1306aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1307 PPCODE:
1308{
1309 int fd = s_fileno_croak (fh, 0);
1310 dREQ;
1311
1312 req->type = EIO_SEEK;
1313 req->sv1 = newSVsv (fh);
1314 req->int1 = fd;
1315 req->offs = SvVAL64 (offset);
1316 req->int2 = whence;
1317
1318 REQ_SEND;
1319}
1320
1321void
1349aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1322aio_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: 1323 ALIAS:
1357 aio_read = REQ_READ 1324 aio_read = EIO_READ
1358 aio_write = REQ_WRITE 1325 aio_write = EIO_WRITE
1359 PROTOTYPE: $$$$$;$
1360 PPCODE: 1326 PPCODE:
1361{ 1327{
1362 STRLEN svlen; 1328 STRLEN svlen;
1329 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363 char *svptr = SvPVbyte (data, svlen); 1330 char *svptr = SvPVbyte (data, svlen);
1364 1331 UV len = SvUV (length);
1365 SvUPGRADE (data, SVt_PV);
1366 SvPOK_on (data);
1367 1332
1368 if (dataoffset < 0) 1333 if (dataoffset < 0)
1369 dataoffset += svlen; 1334 dataoffset += svlen;
1370 1335
1371 if (dataoffset < 0 || dataoffset > svlen) 1336 if (dataoffset < 0 || dataoffset > svlen)
1372 croak ("data offset outside of string"); 1337 croak ("dataoffset outside of data scalar");
1373 1338
1374 if (ix == REQ_WRITE) 1339 if (ix == EIO_WRITE)
1375 { 1340 {
1376 /* write: check length and adjust. */ 1341 /* write: check length and adjust. */
1377 if (length < 0 || length + dataoffset > svlen) 1342 if (!SvOK (length) || len + dataoffset > svlen)
1378 length = svlen - dataoffset; 1343 len = svlen - dataoffset;
1379 } 1344 }
1380 else 1345 else
1381 { 1346 {
1382 /* read: grow scalar as necessary */ 1347 /* read: check type and grow scalar as necessary */
1348 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1383 svptr = SvGROW (data, length + dataoffset); 1349 svptr = sv_grow (data, len + dataoffset + 1);
1350 else if (SvCUR (data) < len + dataoffset)
1351 croak ("length + dataoffset outside of scalar, and cannot grow");
1384 } 1352 }
1385
1386 if (length < 0)
1387 croak ("length must not be negative");
1388 1353
1389 { 1354 {
1390 dREQ; 1355 dREQ;
1391 1356
1392 req->type = ix; 1357 req->type = ix;
1393 req->fh = newSVsv (fh); 1358 req->sv1 = newSVsv (fh);
1394 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1359 req->int1 = fd;
1395 : IoOFP (sv_2io (fh))); 1360 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396 req->offs = offset;
1397 req->size = length; 1361 req->size = len;
1398 req->sv1 = SvREFCNT_inc (data); 1362 req->sv2 = SvREFCNT_inc (data);
1399 req->ptr1 = (char *)svptr + dataoffset; 1363 req->ptr2 = (char *)svptr + dataoffset;
1400 req->stroffset = dataoffset; 1364 req->stroffset = dataoffset;
1401 1365
1402 if (!SvREADONLY (data)) 1366 if (!SvREADONLY (data))
1403 { 1367 {
1404 SvREADONLY_on (data); 1368 SvREADONLY_on (data);
1405 req->flags |= FLAG_DATA_RO_OFF; 1369 req->flags |= FLAG_SV2_RO_OFF;
1406 } 1370 }
1407 1371
1408 REQ_SEND; 1372 REQ_SEND;
1409 } 1373 }
1410} 1374}
1411 1375
1412void 1376void
1413aio_readlink (path,callback=&PL_sv_undef) 1377aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1414 SV * path 1378 ALIAS:
1415 SV * callback 1379 aio_ioctl = EIO_IOCTL
1416 PROTOTYPE: $$;$ 1380 aio_fcntl = EIO_FCNTL
1417 PPCODE: 1381 PPCODE:
1418{ 1382{
1419 SV *data; 1383 int fd = s_fileno_croak (fh, 0);
1384 char *svptr;
1385
1386 if (SvPOK (arg) || !SvNIOK (arg))
1387 {
1388 STRLEN svlen;
1389 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1390#ifdef IOCPARM_LEN
1391 STRLEN need = IOCPARM_LEN (request);
1392#else
1393 STRLEN need = 256;
1394#endif
1395
1396 if (svlen < need)
1397 svptr = SvGROW (arg, need);
1398 }
1399 else
1400 svptr = (char *)SvIV (arg);
1401
1402 {
1403 dREQ;
1404
1405 req->type = ix;
1406 req->sv1 = newSVsv (fh);
1407 req->int1 = fd;
1408 req->int2 = (long)request;
1409 req->sv2 = SvREFCNT_inc (arg);
1410 req->ptr2 = svptr;
1411
1412 REQ_SEND;
1413 }
1414}
1415
1416void
1417aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1418 ALIAS:
1419 aio_readlink = EIO_READLINK
1420 aio_realpath = EIO_REALPATH
1421 PPCODE:
1422{
1420 dREQ; 1423 dREQ;
1421 1424
1422 data = newSV (NAME_MAX);
1423 SvPOK_on (data);
1424
1425 req->type = REQ_READLINK; 1425 req->type = ix;
1426 req->fh = newSVsv (path); 1426 req_set_path1 (req, pathname);
1427 req->ptr2 = SvPVbyte_nolen (path);
1428 req->sv1 = data;
1429 req->ptr1 = SvPVbyte_nolen (data);
1430 1427
1431 REQ_SEND; 1428 REQ_SEND;
1432} 1429}
1433 1430
1434void 1431void
1435aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1432aio_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: $$$$;$
1442 PPCODE: 1433 PPCODE:
1443{ 1434{
1435 int ifd = s_fileno_croak (in_fh , 0);
1436 int ofd = s_fileno_croak (out_fh, 1);
1444 dREQ; 1437 dREQ;
1445 1438
1446 req->type = REQ_SENDFILE; 1439 req->type = EIO_SENDFILE;
1447 req->fh = newSVsv (out_fh); 1440 req->sv1 = newSVsv (out_fh);
1448 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1441 req->int1 = ofd;
1449 req->sv2 = newSVsv (in_fh); 1442 req->sv2 = newSVsv (in_fh);
1450 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1443 req->int2 = ifd;
1451 req->offs = in_offset; 1444 req->offs = in_offset;
1452 req->size = length; 1445 req->size = length;
1453 1446
1454 REQ_SEND; 1447 REQ_SEND;
1455} 1448}
1456 1449
1457void 1450void
1458aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1451aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1459 SV * fh
1460 UV offset
1461 IV length
1462 SV * callback
1463 PROTOTYPE: $$$;$
1464 PPCODE: 1452 PPCODE:
1465{ 1453{
1454 int fd = s_fileno_croak (fh, 0);
1466 dREQ; 1455 dREQ;
1467 1456
1468 req->type = REQ_READAHEAD; 1457 req->type = EIO_READAHEAD;
1469 req->fh = newSVsv (fh); 1458 req->sv1 = newSVsv (fh);
1470 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1459 req->int1 = fd;
1471 req->offs = offset; 1460 req->offs = offset;
1472 req->size = length; 1461 req->size = length;
1473 1462
1474 REQ_SEND; 1463 REQ_SEND;
1475} 1464}
1476 1465
1477void 1466void
1478aio_stat (fh_or_path,callback=&PL_sv_undef) 1467aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1479 SV * fh_or_path
1480 SV * callback
1481 ALIAS: 1468 ALIAS:
1482 aio_stat = REQ_STAT 1469 aio_stat = EIO_STAT
1483 aio_lstat = REQ_LSTAT 1470 aio_lstat = EIO_LSTAT
1471 aio_statvfs = EIO_STATVFS
1484 PPCODE: 1472 PPCODE:
1485{ 1473{
1486 dREQ; 1474 dREQ;
1487 1475
1488 New (0, req->statdata, 1, Stat_t); 1476 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 1477
1508 REQ_SEND; 1478 REQ_SEND;
1509} 1479}
1510 1480
1481UV
1482major (UV dev)
1483 ALIAS:
1484 minor = 1
1485 CODE:
1486 RETVAL = ix ? minor (dev) : major (dev);
1487 OUTPUT:
1488 RETVAL
1489
1490UV
1491makedev (UV maj, UV min)
1492 CODE:
1493 RETVAL = makedev (maj, min);
1494 OUTPUT:
1495 RETVAL
1496
1511void 1497void
1498aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1499 PPCODE:
1500{
1501 dREQ;
1502
1503 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1504 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1505 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1506
1507 REQ_SEND;
1508}
1509
1510void
1511aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1512 PPCODE:
1513{
1514 dREQ;
1515
1516 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1517 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1524 PPCODE:
1525{
1526 dREQ;
1527
1528 req->int2 = mode;
1529 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1530
1531 REQ_SEND;
1532}
1533
1534void
1535aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1536 PPCODE:
1537{
1538 dREQ;
1539
1540 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1541 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1542 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1543
1544 REQ_SEND;
1545}
1546
1547void
1548aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1549 PPCODE:
1550{
1551 dREQ;
1552
1553 req->type = EIO_READDIR;
1554 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1555
1556 if (flags & EIO_READDIR_DENTS)
1557 req->int1 |= EIO_READDIR_CUSTOM2;
1558
1559 req_set_path1 (req, pathname);
1560
1561 REQ_SEND;
1562}
1563
1564void
1565aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1566 PPCODE:
1567{
1568 dREQ;
1569
1570 req->type = EIO_MKDIR;
1571 req->int2 = mode;
1572 req_set_path1 (req, pathname);
1573
1574 REQ_SEND;
1575}
1576
1577void
1512aio_unlink (pathname,callback=&PL_sv_undef) 1578aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1513 SV * pathname
1514 SV * callback
1515 ALIAS: 1579 ALIAS:
1516 aio_unlink = REQ_UNLINK 1580 aio_unlink = EIO_UNLINK
1517 aio_rmdir = REQ_RMDIR 1581 aio_rmdir = EIO_RMDIR
1518 aio_readdir = REQ_READDIR 1582 aio_readdir = EIO_READDIR
1519 PPCODE: 1583 PPCODE:
1520{ 1584{
1521 dREQ; 1585 dREQ;
1522 1586
1523 req->type = ix; 1587 req->type = ix;
1524 req->sv1 = newSVsv (pathname); 1588 req_set_path1 (req, pathname);
1525 req->ptr1 = SvPVbyte_nolen (pathname); 1589
1526
1527 REQ_SEND; 1590 REQ_SEND;
1528} 1591}
1529 1592
1530void 1593void
1531aio_link (oldpath,newpath,callback=&PL_sv_undef) 1594aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1532 SV * oldpath
1533 SV * newpath
1534 SV * callback
1535 ALIAS: 1595 ALIAS:
1536 aio_link = REQ_LINK 1596 aio_link = EIO_LINK
1537 aio_symlink = REQ_SYMLINK 1597 aio_symlink = EIO_SYMLINK
1538 aio_rename = REQ_RENAME 1598 aio_rename = EIO_RENAME
1539 PPCODE: 1599 PPCODE:
1540{ 1600{
1601 eio_wd wd2 = 0;
1541 dREQ; 1602 dREQ;
1542 1603
1543 req->type = ix; 1604 req->type = ix;
1544 req->fh = newSVsv (oldpath); 1605 req_set_path1 (req, oldpath);
1545 req->ptr2 = SvPVbyte_nolen (req->fh); 1606 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1546 req->sv1 = newSVsv (newpath); 1607 req->int3 = (long)wd2;
1547 req->ptr1 = SvPVbyte_nolen (newpath);
1548 1608
1549 REQ_SEND; 1609 REQ_SEND;
1550} 1610}
1551 1611
1552void 1612void
1553aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1613aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1554 SV * pathname
1555 SV * callback
1556 UV mode
1557 UV dev
1558 PPCODE: 1614 PPCODE:
1559{ 1615{
1616 eio_wd wd2 = 0;
1560 dREQ; 1617 dREQ;
1561 1618
1562 req->type = REQ_MKNOD; 1619 req->type = EIO_RENAME;
1563 req->sv1 = newSVsv (pathname); 1620 req_set_path1 (req, oldpath);
1564 req->ptr1 = SvPVbyte_nolen (pathname); 1621 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1565 req->mode = (mode_t)mode; 1622 req->int2 = flags;
1566 req->offs = dev; 1623 req->int3 = (long)wd2;
1567 1624
1568 REQ_SEND; 1625 REQ_SEND;
1569} 1626}
1570 1627
1571void 1628void
1572aio_busy (delay,callback=&PL_sv_undef) 1629aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1573 double delay
1574 SV * callback
1575 PPCODE: 1630 PPCODE:
1576{ 1631{
1577 dREQ; 1632 dREQ;
1578 1633
1579 req->type = REQ_BUSY; 1634 req->type = EIO_MKNOD;
1580 req->int1 = delay < 0. ? 0 : delay; 1635 req->int2 = (mode_t)mode;
1581 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1636 req->offs = dev;
1582 1637 req_set_path1 (req, pathname);
1638
1583 REQ_SEND; 1639 REQ_SEND;
1584} 1640}
1585 1641
1586void 1642void
1587aio_group (callback=&PL_sv_undef) 1643aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1588 SV * callback 1644 ALIAS:
1589 PROTOTYPE: ;$ 1645 aio_mtouch = EIO_MTOUCH
1646 aio_msync = EIO_MSYNC
1590 PPCODE: 1647 PPCODE:
1591{ 1648{
1649 STRLEN svlen;
1650 char *svptr = SvPVbyte (data, svlen);
1651 UV len = SvUV (length);
1652
1653 if (flags < 0)
1654 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1655
1656 if (offset < 0)
1657 offset += svlen;
1658
1659 if (offset < 0 || offset > svlen)
1660 croak ("offset outside of scalar");
1661
1662 if (!SvOK (length) || len + offset > svlen)
1663 len = svlen - offset;
1664
1665 {
1666 dREQ;
1667
1668 req->type = ix;
1669 req->sv2 = SvREFCNT_inc (data);
1670 req->ptr2 = (char *)svptr + offset;
1671 req->size = len;
1672 req->int1 = flags;
1673
1674 REQ_SEND;
1675 }
1676}
1677
1678void
1679aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1680 PPCODE:
1681{
1682 STRLEN svlen;
1683 char *svptr = SvPVbyte (data, svlen);
1684 UV len = SvUV (length);
1685
1686 if (offset < 0)
1687 offset += svlen;
1688
1689 if (offset < 0 || offset > svlen)
1690 croak ("offset outside of scalar");
1691
1692 if (!SvOK (length) || len + offset > svlen)
1693 len = svlen - offset;
1694
1695 {
1696 dREQ;
1697
1698 req->type = EIO_MLOCK;
1699 req->sv2 = SvREFCNT_inc (data);
1700 req->ptr2 = (char *)svptr + offset;
1701 req->size = len;
1702
1703 REQ_SEND;
1704 }
1705}
1706
1707void
1708aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1709 PPCODE:
1710{
1711 dREQ;
1712
1713 req->type = EIO_MLOCKALL;
1714 req->int1 = flags;
1715
1716 REQ_SEND;
1717}
1718
1719void
1720aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1721 PPCODE:
1722{
1723 int fd = s_fileno_croak (fh, 0);
1592 dREQ; 1724 dREQ;
1593 1725
1594 req->type = REQ_GROUP; 1726 req->type = EIO_CUSTOM;
1727 req->sv1 = newSVsv (fh);
1728 req->int1 = fd;
1595 1729
1596 req_send (req); 1730 req->feed = fiemap;
1597 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1731#if HAVE_FIEMAP
1598} 1732 /* keep our fingers crossed that the next two types are 64 bit */
1733 req->offs = start;
1734 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1735 req->int2 = flags;
1736 req->int3 = SvOK (count) ? SvIV (count) : -1;
1737#endif
1599 1738
1739 REQ_SEND;
1740}
1741
1600void 1742void
1601aio_nop (callback=&PL_sv_undef) 1743aio_busy (double delay, SV *callback = &PL_sv_undef)
1602 SV * callback
1603 PPCODE: 1744 PPCODE:
1604{ 1745{
1605 dREQ; 1746 dREQ;
1606 1747
1607 req->type = REQ_NOP; 1748 req->type = EIO_BUSY;
1749 req->nv1 = delay < 0. ? 0. : delay;
1608 1750
1609 REQ_SEND; 1751 REQ_SEND;
1610} 1752}
1611 1753
1754void
1755aio_group (SV *callback = &PL_sv_undef)
1756 PPCODE:
1757{
1758 dREQ;
1759
1760 req->type = EIO_GROUP;
1761
1762 PUTBACK;
1763 req_submit (req);
1764 SPAGAIN;
1765
1766 XPUSHs (req_sv (req, aio_grp_stash));
1767}
1768
1769void
1770aio_nop (SV *callback = &PL_sv_undef)
1771 ALIAS:
1772 aio_nop = EIO_NOP
1773 aio_sync = EIO_SYNC
1774 PPCODE:
1775{
1776 dREQ;
1777
1778 req->type = ix;
1779
1780 REQ_SEND;
1781}
1782
1612int 1783int
1613aioreq_pri (int pri = 0) 1784aioreq_pri (int pri = NO_INIT)
1614 PROTOTYPE: ;$
1615 CODE: 1785 CODE:
1616 RETVAL = next_pri - PRI_BIAS; 1786 RETVAL = next_pri;
1617 if (items > 0) 1787 if (items > 0)
1618 { 1788 {
1619 if (pri < PRI_MIN) pri = PRI_MIN; 1789 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620 if (pri > PRI_MAX) pri = PRI_MAX; 1790 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621 next_pri = pri + PRI_BIAS; 1791 next_pri = pri;
1622 } 1792 }
1623 OUTPUT: 1793 OUTPUT:
1624 RETVAL 1794 RETVAL
1625 1795
1626void 1796void
1627aioreq_nice (int nice = 0) 1797aioreq_nice (int nice = 0)
1628 CODE: 1798 CODE:
1629 nice = next_pri - nice; 1799 nice = next_pri - nice;
1630 if (nice < PRI_MIN) nice = PRI_MIN; 1800 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631 if (nice > PRI_MAX) nice = PRI_MAX; 1801 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632 next_pri = nice + PRI_BIAS; 1802 next_pri = nice;
1633 1803
1634void 1804void
1635flush () 1805flush ()
1636 PROTOTYPE:
1637 CODE: 1806 CODE:
1638 while (nreqs) 1807 while (eio_nreqs ())
1639 { 1808 {
1640 poll_wait (); 1809 poll_wait ();
1641 poll_cb (0); 1810 poll_cb ();
1642 } 1811 }
1643 1812
1644void 1813int
1645poll() 1814poll ()
1646 PROTOTYPE:
1647 CODE: 1815 CODE:
1648 if (nreqs)
1649 {
1650 poll_wait (); 1816 poll_wait ();
1651 poll_cb (0); 1817 RETVAL = poll_cb ();
1652 }
1653
1654int
1655poll_fileno()
1656 PROTOTYPE:
1657 CODE:
1658 RETVAL = respipe [0];
1659 OUTPUT: 1818 OUTPUT:
1660 RETVAL 1819 RETVAL
1661 1820
1662int 1821int
1822poll_fileno ()
1823 CODE:
1824 RETVAL = s_epipe_fd (&respipe);
1825 OUTPUT:
1826 RETVAL
1827
1828int
1663poll_cb(...) 1829poll_cb (...)
1664 PROTOTYPE: 1830 PROTOTYPE:
1665 CODE: 1831 CODE:
1666 RETVAL = poll_cb (); 1832 RETVAL = poll_cb ();
1667 OUTPUT: 1833 OUTPUT:
1668 RETVAL 1834 RETVAL
1669 1835
1670void 1836void
1671poll_wait() 1837poll_wait ()
1672 PROTOTYPE:
1673 CODE: 1838 CODE:
1674 if (nreqs)
1675 poll_wait (); 1839 poll_wait ();
1676 1840
1677int 1841int
1678nreqs() 1842nreqs ()
1679 PROTOTYPE:
1680 CODE: 1843 CODE:
1681 RETVAL = nreqs; 1844 RETVAL = eio_nreqs ();
1682 OUTPUT: 1845 OUTPUT:
1683 RETVAL 1846 RETVAL
1684 1847
1685int 1848int
1686nready() 1849nready ()
1687 PROTOTYPE:
1688 CODE: 1850 CODE:
1689 RETVAL = get_nready (); 1851 RETVAL = eio_nready ();
1690 OUTPUT: 1852 OUTPUT:
1691 RETVAL 1853 RETVAL
1692 1854
1693int 1855int
1694npending() 1856npending ()
1695 PROTOTYPE:
1696 CODE: 1857 CODE:
1697 RETVAL = get_npending (); 1858 RETVAL = eio_npending ();
1698 OUTPUT: 1859 OUTPUT:
1699 RETVAL 1860 RETVAL
1700 1861
1701int 1862int
1702nthreads() 1863nthreads ()
1703 PROTOTYPE:
1704 CODE: 1864 CODE:
1705 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1865 RETVAL = eio_nthreads ();
1706 RETVAL = started;
1707 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708 OUTPUT: 1866 OUTPUT:
1709 RETVAL 1867 RETVAL
1710 1868
1869int
1870fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1871 CODE:
1872 RETVAL = posix_fadvise (fh, offset, length, advice);
1873 OUTPUT:
1874 RETVAL
1875
1876IV
1877sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1878 CODE:
1879 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1880 OUTPUT:
1881 RETVAL
1882
1883void
1884mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1885 PPCODE:
1886 sv_unmagic (scalar, MMAP_MAGIC);
1887{
1888 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1889 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1890 if (addr == (void *)-1)
1891 XSRETURN_NO;
1892
1893 sv_force_normal (scalar);
1894
1895 /* we store the length in mg_obj, as namlen is I32 :/ */
1896 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1897 ->mg_obj = (SV *)length;
1898
1899 SvUPGRADE (scalar, SVt_PV); /* nop... */
1900
1901 if (!(prot & PROT_WRITE))
1902 SvREADONLY_on (scalar);
1903
1904 if (SvLEN (scalar))
1905 Safefree (SvPVX (scalar));
1906
1907 SvPVX (scalar) = (char *)addr;
1908 SvCUR_set (scalar, length);
1909 SvLEN_set (scalar, 0);
1910 SvPOK_only (scalar);
1911
1912 XSRETURN_YES;
1913}
1914
1915void
1916munmap (SV *scalar)
1917 CODE:
1918 sv_unmagic (scalar, MMAP_MAGIC);
1919
1920int
1921madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1922 ALIAS:
1923 mprotect = 1
1924 CODE:
1925{
1926 STRLEN svlen;
1927 void *addr = SvPVbyte (scalar, svlen);
1928 STRLEN len = SvUV (length);
1929
1930 if (offset < 0)
1931 offset += svlen;
1932
1933 if (offset < 0 || offset > svlen)
1934 croak ("offset outside of scalar");
1935
1936 if (!SvOK (length) || len + offset > svlen)
1937 len = svlen - offset;
1938
1939 addr = (void *)(((intptr_t)addr) + offset);
1940 eio_page_align (&addr, &len);
1941
1942 switch (ix)
1943 {
1944 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1945 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1946 }
1947}
1948 OUTPUT:
1949 RETVAL
1950
1951int
1952munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1953 CODE:
1954{
1955 STRLEN svlen;
1956 void *addr = SvPVbyte (scalar, svlen);
1957 size_t len = SvUV (length);
1958
1959 if (offset < 0)
1960 offset += svlen;
1961
1962 if (offset < 0 || offset > svlen)
1963 croak ("offset outside of scalar");
1964
1965 if (!SvOK (length) || len + offset > svlen)
1966 len = svlen - offset;
1967
1968 addr = (void *)(((intptr_t)addr) + offset);
1969 eio_page_align (&addr, &len);
1970#if _POSIX_MEMLOCK_RANGE
1971 RETVAL = munlock (addr, len);
1972#else
1973 RETVAL = EIO_ENOSYS ();
1974#endif
1975}
1976 OUTPUT:
1977 RETVAL
1978
1979int
1980munlockall ()
1981 CODE:
1982#if _POSIX_MEMLOCK
1983 munlockall ();
1984#else
1985 RETVAL = EIO_ENOSYS ();
1986#endif
1987 OUTPUT:
1988 RETVAL
1989
1990int
1991splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1992 CODE:
1993{
1994#if HAVE_LINUX_SPLICE
1995 loff_t off_in_, off_out_;
1996 RETVAL = splice (
1997 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1998 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1999 length, flags
2000 );
2001#else
2002 RETVAL = EIO_ENOSYS ();
2003#endif
2004}
2005 OUTPUT:
2006 RETVAL
2007
2008int
2009tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2010 CODE:
2011#if HAVE_LINUX_SPLICE
2012 RETVAL = tee (rfh, wfh, length, flags);
2013#else
2014 RETVAL = EIO_ENOSYS ();
2015#endif
2016 OUTPUT:
2017 RETVAL
2018
2019int
2020pipesize (aio_rfd rfh, int new_size = -1)
2021 PROTOTYPE: $;$
2022 CODE:
2023#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2024 if (new_size >= 0)
2025 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2026 else
2027 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2028#else
2029 errno = ENOSYS;
2030 RETVAL = -1;
2031#endif
2032 OUTPUT:
2033 RETVAL
2034
2035void
2036pipe2 (int flags = 0)
2037 PROTOTYPE: ;$
2038 PPCODE:
2039{
2040 int fd[2];
2041 int res;
2042
2043 if (flags)
2044#if HAVE_PIPE2
2045 res = pipe2 (fd, flags);
2046#else
2047 res = (errno = ENOSYS, -1);
2048#endif
2049 else
2050 res = pipe (fd);
2051
2052 if (!res)
2053 {
2054 EXTEND (SP, 2);
2055 PUSHs (newmortalFH (fd[0], O_RDONLY));
2056 PUSHs (newmortalFH (fd[1], O_WRONLY));
2057 }
2058}
2059
2060UV
2061get_fdlimit ()
2062 CODE:
2063#if HAVE_RLIMITS
2064 struct rlimit rl;
2065 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2066 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2067#endif
2068 XSRETURN_UNDEF;
2069 OUTPUT:
2070 RETVAL
2071
2072void
2073min_fdlimit (UV limit = 0x7fffffffU)
2074 CODE:
2075{
2076#if HAVE_RLIMITS
2077 struct rlimit rl;
2078 rlim_t orig_rlim_max;
2079 UV bit;
2080
2081 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2082 goto fail;
2083
2084 if (rl.rlim_cur == RLIM_INFINITY)
2085 XSRETURN_YES;
2086
2087 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2088
2089 if (rl.rlim_cur < limit)
2090 {
2091 rl.rlim_cur = limit;
2092
2093 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2094 rl.rlim_max = rl.rlim_cur;
2095 }
2096
2097 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2098 XSRETURN_YES;
2099
2100 if (errno == EPERM)
2101 {
2102 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2103 /* our limit overflows a system-wide limit */
2104 /* try an adaptive algorithm, but do not lower the hardlimit */
2105 rl.rlim_max = 0;
2106 for (bit = 0x40000000U; bit; bit >>= 1)
2107 {
2108 rl.rlim_max |= bit;
2109 rl.rlim_cur = rl.rlim_max;
2110
2111 /* nevr decrease the hard limit */
2112 if (rl.rlim_max < orig_rlim_max)
2113 break;
2114
2115 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2116 rl.rlim_max &= ~bit; /* too high, remove bit again */
2117 }
2118
2119 /* now, raise the soft limit to the max permitted */
2120 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2121 {
2122 rl.rlim_cur = rl.rlim_max;
2123 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2124 errno = EPERM;
2125 }
2126 }
2127#endif
2128 fail:
2129 XSRETURN_UNDEF;
2130}
2131
2132void _on_next_submit (SV *cb)
2133 CODE:
2134 SvREFCNT_dec (on_next_submit);
2135 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2136
1711PROTOTYPES: DISABLE 2137PROTOTYPES: DISABLE
2138
2139MODULE = IO::AIO PACKAGE = IO::AIO::WD
2140
2141BOOT:
2142{
2143 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2144 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2145}
2146
2147void
2148DESTROY (SV *self)
2149 CODE:
2150{
2151 aio_wd wd = SvAIO_WD (self);
2152#if HAVE_AT
2153 {
2154 SV *callback = &PL_sv_undef;
2155 dREQ; /* clobbers next_pri :/ */
2156 next_pri = req->pri; /* restore next_pri */
2157 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2158 req->type = EIO_WD_CLOSE;
2159 req->wd = wd;
2160 REQ_SEND;
2161 }
2162#else
2163 eio_wd_close_sync (wd);
2164#endif
2165}
1712 2166
1713MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2167MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714 2168
1715void 2169void
1716cancel (aio_req_ornot req) 2170cancel (aio_req_ornot req)
1717 CODE: 2171 CODE:
1718 req_cancel (req); 2172 eio_cancel (req);
1719 2173
1720void 2174void
1721cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2175cb (aio_req_ornot req, SV *callback = NO_INIT)
1722 CODE: 2176 PPCODE:
2177{
2178 if (GIMME_V != G_VOID)
2179 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2180
2181 if (items > 1)
2182 {
2183 SV *cb_cv = get_cb (callback);
2184
1723 SvREFCNT_dec (req->callback); 2185 SvREFCNT_dec (req->callback);
1724 req->callback = newSVsv (callback); 2186 req->callback = SvREFCNT_inc (cb_cv);
2187 }
2188}
1725 2189
1726MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2190MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727 2191
1728void 2192void
1729add (aio_req grp, ...) 2193add (aio_req grp, ...)
1730 PPCODE: 2194 PPCODE:
1731{ 2195{
1732 int i; 2196 int i;
1733 aio_req req;
1734 2197
1735 if (grp->int1 == 2) 2198 if (grp->int1 == 2)
1736 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2199 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737 2200
1738 for (i = 1; i < items; ++i ) 2201 for (i = 1; i < items; ++i )
1739 { 2202 {
2203 aio_req req;
2204
1740 if (GIMME_V != G_VOID) 2205 if (GIMME_V != G_VOID)
1741 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2206 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742 2207
1743 req = SvAIO_REQ (ST (i)); 2208 req = SvAIO_REQ (ST (i));
1744 2209
1745 if (req) 2210 if (req)
1746 { 2211 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 } 2212 }
1759} 2213}
1760 2214
1761void 2215void
1762cancel_subs (aio_req_ornot req) 2216cancel_subs (aio_req_ornot req)
… …
1771 AV *av; 2225 AV *av;
1772 2226
1773 grp->errorno = errno; 2227 grp->errorno = errno;
1774 2228
1775 av = newAV (); 2229 av = newAV ();
2230 av_extend (av, items - 1);
1776 2231
1777 for (i = 1; i < items; ++i ) 2232 for (i = 1; i < items; ++i )
1778 av_push (av, newSVsv (ST (i))); 2233 av_push (av, newSVsv (ST (i)));
1779 2234
1780 SvREFCNT_dec (grp->sv1); 2235 SvREFCNT_dec (grp->sv1);
… …
1787 grp->errorno = errorno; 2242 grp->errorno = errorno;
1788 2243
1789void 2244void
1790limit (aio_req grp, int limit) 2245limit (aio_req grp, int limit)
1791 CODE: 2246 CODE:
1792 grp->int2 = limit; 2247 eio_grp_limit (grp, limit);
1793 aio_grp_feed (grp);
1794 2248
1795void 2249void
1796feed (aio_req grp, SV *callback=&PL_sv_undef) 2250feed (aio_req grp, SV *callback = &PL_sv_undef)
1797 CODE: 2251 CODE:
1798{ 2252{
1799 SvREFCNT_dec (grp->sv2); 2253 SvREFCNT_dec (grp->sv2);
1800 grp->sv2 = newSVsv (callback); 2254 grp->sv2 = newSVsv (callback);
2255 grp->feed = aio_grp_feed;
1801 2256
1802 if (grp->int2 <= 0) 2257 if (grp->int2 <= 0)
1803 grp->int2 = 2; 2258 grp->int2 = 2;
1804 2259
1805 aio_grp_feed (grp); 2260 eio_grp_limit (grp, grp->int2);
1806} 2261}
1807 2262

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