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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC vs.
Revision 1.249 by root, Fri Jun 23 23:50:25 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
109typedef SV SV8; /* byte-sv, used for argument-checking */
110typedef int aio_rfd; /* read file desriptor */
111typedef int aio_wfd; /* write file descriptor */
112
113static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
114
115#define EIO_REQ_MEMBERS \
116 SV *callback; \
117 SV *sv1, *sv2; \
118 SV *sv3, *sv4; \
119 STRLEN stroffset; \
120 SV *self;
121
122#define EIO_NO_WRAPPERS 1
123
124#include "libeio/config.h"
125#include "libeio/eio.h"
126
127static int req_invoke (eio_req *req);
128#define EIO_FINISH(req) req_invoke (req)
129static void req_destroy (eio_req *grp);
130#define EIO_DESTROY(req) req_destroy (req)
131
132#include "libeio/eio.c"
133
134#if !HAVE_POSIX_FADVISE
135# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
136#endif
137
138#if !HAVE_POSIX_MADVISE
139# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
140#endif
141
142#ifndef MAP_ANONYMOUS
143# ifdef MAP_ANON
144# define MAP_ANONYMOUS MAP_ANON
43# else 145# else
44# error sendfile support requested but not available 146# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 147# endif
46#endif 148#endif
47 149
48/* number of seconds after which idle threads exit */ 150/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 151/* also provides const_iv_ and const_niv_ macros for them */
152#include "def0.h"
50 153
51/* used for struct dirent, AIX doesn't provide it */ 154#ifndef makedev
52#ifndef NAME_MAX 155# 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 156#endif
157#ifndef major
158# define major(dev) ((dev) >> 8)
79#endif 159#endif
160#ifndef minor
161# define minor(dev) ((dev) & 0xff)
162#endif
80 163
81/* buffer size for various temporary buffers */ 164#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 165# define PAGESIZE sysconf (_SC_PAGESIZE)
166#endif
83 167
84#define dBUF \ 168/*****************************************************************************/
85 char *aio_buf; \ 169
86 LOCK (wrklock); \ 170static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 171fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 172{
89 if (!aio_buf) \ 173 req->result = -1;
174
175#if HAVE_FIEMAP
176 /* assume some c99 */
177 struct fiemap *fiemap = 0;
178 size_t end_offset;
179 int count = req->int3;
180
181 req->flags |= EIO_FLAG_PTR1_FREE;
182
183 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
184 /* increase in 3.5kb steps */
185 if (count < 0)
186 count = 8;
187
188 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
189 errno = ENOMEM;
190 if (!fiemap)
90 return -1; 191 return;
91 192
92typedef SV SV8; /* byte-sv, used for argument-checking */ 193 req->ptr1 = fiemap;
93 194
94enum { 195 fiemap->fm_start = req->offs;
95 REQ_QUIT, 196 fiemap->fm_length = req->size;
96 REQ_OPEN, REQ_CLOSE, 197 fiemap->fm_flags = req->int2;
97 REQ_READ, REQ_WRITE, REQ_READAHEAD, 198 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};
107 199
108#define AIO_REQ_KLASS "IO::AIO::REQ" 200 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
109#define AIO_GRP_KLASS "IO::AIO::GRP" 201 return;
110 202
111typedef struct aio_cb 203 if (req->int3 >= 0 /* not autosizing */
112{ 204 || !fiemap->fm_mapped_extents /* no more extents */
113 struct aio_cb *volatile next; 205 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
206 goto done;
114 207
115 SV *callback, *fh; 208 /* else we have to loop -
116 SV *sv1, *sv2; 209 * it would be tempting (actually I tried that first) to just query the
117 void *ptr1, *ptr2; 210 * number of extents needed, but linux often feels like not returning all
118 off_t offs; 211 * extents, without telling us it left any out. this complicates
119 size_t size; 212 * this quite a bit.
120 ssize_t result; 213 */
121 214
122 STRLEN stroffset; 215 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 */
127 216
128 unsigned char flags; 217 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 { 218 {
199 closedir (wrk->dirp); 219 /* 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; 220 char scratch[3072];
201 } 221 struct fiemap *incmap = (struct fiemap *)scratch;
202 222
203 if (wrk->dbuf) 223 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 224 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 225 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 226 incmap->fm_flags = fiemap->fm_flags;
207 } 227 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 228
210static void worker_free (worker *wrk) 229 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
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; 230 return;
305 231
306 --q->size; 232 if (!incmap->fm_mapped_extents)
233 goto done;
307 234
308 for (pri = NUM_PRI; pri--; ) 235 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
309 { 236 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
310 aio_req req = q->qs[pri]; 237 errno = ENOMEM;
311
312 if (req) 238 if (!fiemap)
239 return;
240
241 req->ptr1 = fiemap;
242
243 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 244 {
314 if (!(q->qs[pri] = req->next)) 245 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 246
317 return req; 247 if (e->fe_logical + e->fe_length >= end_offset)
248 goto done;
249
250 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
251
252 if (e->fe_flags & FIEMAP_EXTENT_LAST)
253 goto done;
254
318 } 255 }
319 } 256 }
320 257
321 abort (); 258done:
322} 259 req->result = 0;
323 260
324static int poll_cb (); 261#else
325static void req_invoke (aio_req req); 262 errno = ENOSYS;
263#endif
264}
265
266/*****************************************************************************/
267
268enum {
269 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
270};
271
272typedef eio_req *aio_req;
273typedef eio_req *aio_req_ornot;
274typedef eio_wd aio_wd;
275
276static SV *on_next_submit;
277static int next_pri = EIO_PRI_DEFAULT;
278static int max_outstanding;
279
280static s_epipe respipe;
281
326static void req_free (aio_req req); 282static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 283static void req_cancel (aio_req req);
328 284
285static void
286want_poll (void)
287{
288 /* write a dummy byte to the pipe so fh becomes ready */
289 s_epipe_signal (&respipe);
290}
291
292static void
293done_poll (void)
294{
295 /* read any signals sent by the worker threads */
296 s_epipe_drain (&respipe);
297}
298
329/* must be called at most once */ 299/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 300static SV *
301req_sv (aio_req req, HV *stash)
331{ 302{
332 if (!req->self) 303 if (!req->self)
333 { 304 {
334 req->self = (SV *)newHV (); 305 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 306 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 307 }
337 308
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 309 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 310}
340 311
341static aio_req SvAIO_REQ (SV *sv) 312static SV *
313newSVaio_wd (aio_wd wd)
314{
315 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
316}
317
318static aio_req
319SvAIO_REQ (SV *sv)
342{ 320{
343 MAGIC *mg; 321 MAGIC *mg;
344 322
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 323 if (!SvROK (sv)
324 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
325 || (SvSTASH (SvRV (sv)) != aio_grp_stash
326 && SvSTASH (SvRV (sv)) != aio_req_stash
327 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 328 croak ("object of class IO::AIO::REQ expected");
347 329
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 330 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 331
350 return mg ? (aio_req)mg->mg_ptr : 0; 332 return mg ? (aio_req)mg->mg_ptr : 0;
351} 333}
352 334
335static aio_wd
336SvAIO_WD (SV *sv)
337{
338 if (!SvROK (sv)
339 || SvTYPE (SvRV (sv)) != SVt_PVMG
340 || SvSTASH (SvRV (sv)) != aio_wd_stash)
341 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
342
343 return (aio_wd)(long)SvIVX (SvRV (sv));
344}
345
346static SV *
347newmortalFH (int fd, int flags)
348{
349 if (fd < 0)
350 return &PL_sv_undef;
351
352 GV *gv = (GV *)sv_newmortal ();
353 char sym[64];
354 int symlen;
355
356 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
357 gv_init (gv, aio_stash, sym, symlen, 0);
358
359 symlen = snprintf (
360 sym,
361 sizeof (sym),
362 "%s&=%d",
363 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
364 fd
365 );
366
367 return do_open (gv, sym, symlen, 0, 0, 0, 0)
368 ? (SV *)gv : &PL_sv_undef;
369}
370
371static void
353static void aio_grp_feed (aio_req grp) 372aio_grp_feed (aio_req grp)
354{ 373{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 374 if (grp->sv2 && SvOK (grp->sv2))
356 { 375 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 376 dSP;
362 377
363 ENTER; 378 ENTER;
364 SAVETMPS; 379 SAVETMPS;
365 PUSHMARK (SP); 380 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 381 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 382 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 383 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 384 SPAGAIN;
370 FREETMPS; 385 FREETMPS;
371 LEAVE; 386 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 } 387 }
382} 388}
383 389
384static void aio_grp_dec (aio_req grp) 390static void
391req_submit (eio_req *req)
385{ 392{
386 --grp->size; 393 eio_submit (req);
387 394
388 /* call feeder, if applicable */ 395 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 396 {
394 req_invoke (grp); 397 dSP;
395 req_free (grp); 398 SV *cb = sv_2mortal (on_next_submit);
399
400 on_next_submit = 0;
401
402 PUSHMARK (SP);
403 PUTBACK;
404 call_sv (cb, G_DISCARD | G_EVAL);
396 } 405 }
397} 406}
398 407
408static int
399static void req_invoke (aio_req req) 409req_invoke (eio_req *req)
400{ 410{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 411 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 412 SvREADONLY_off (req->sv2);
405 413
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 414 if (!EIO_CANCELLED (req) && req->callback)
407 { 415 {
416 dSP;
417 static SV *sv_result_cache; /* caches the result integer SV */
418 SV *sv_result;
419
408 ENTER; 420 ENTER;
409 SAVETMPS; 421 SAVETMPS;
410 PUSHMARK (SP); 422 PUSHMARK (SP);
411 EXTEND (SP, 1); 423 EXTEND (SP, 1);
412 424
425 /* do not recreate the result IV from scratch each time */
426 if (expect_true (sv_result_cache))
427 {
428 sv_result = sv_result_cache; sv_result_cache = 0;
429 SvIV_set (sv_result, req->result);
430 SvIOK_only (sv_result);
431 }
432 else
433 {
434 sv_result = newSViv (req->result);
435 SvREADONLY_on (sv_result);
436 }
437
413 switch (req->type) 438 switch (req->type)
414 { 439 {
440 case EIO_WD_OPEN:
441 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
442 break;
443
415 case REQ_READDIR: 444 case EIO_READDIR:
416 { 445 {
417 SV *rv = &PL_sv_undef; 446 SV *rv = &PL_sv_undef;
418 447
419 if (req->result >= 0) 448 if (req->result >= 0)
420 { 449 {
421 int i; 450 int i;
422 char *buf = req->ptr2; 451 char *names = (char *)req->ptr2;
452 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 453 AV *av = newAV ();
424 454
425 av_extend (av, req->result - 1); 455 av_extend (av, req->result - 1);
426 456
427 for (i = 0; i < req->result; ++i) 457 for (i = 0; i < req->result; ++i)
428 { 458 {
429 SV *sv = newSVpv (buf, 0); 459 if (req->int1 & EIO_READDIR_DENTS)
460 {
461 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 462
463 if (req->int1 & EIO_READDIR_CUSTOM2)
464 {
465 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
466 AV *avent = newAV ();
467
468 av_extend (avent, 2);
469
470 if (!sv_type [ent->type])
471 {
472 sv_type [ent->type] = newSViv (ent->type);
473 SvREADONLY_on (sv_type [ent->type]);
474 }
475
476 av_store (avent, 0, namesv);
477 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
478 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
479
480 av_store (av, i, newRV_noinc ((SV *)avent));
481 }
482 else
431 av_store (av, i, sv); 483 av_store (av, i, namesv);
484
485 ++ent;
486 }
487 else
488 {
489 SV *name = newSVpv (names, 0);
490 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 491 names += SvCUR (name) + 1;
492 }
433 } 493 }
434 494
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 495 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 496 }
437 497
438 PUSHs (rv); 498 PUSHs (rv);
499
500 if (req->int1 & EIO_READDIR_CUSTOM1)
501 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 502 }
440 break; 503 break;
441 504
442 case REQ_OPEN: 505 case EIO_OPEN:
506 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
507 break;
508
509 case EIO_STATVFS:
510 case EIO_FSTATVFS:
443 { 511 {
444 /* convert fd to fh */ 512 SV *rv = &PL_sv_undef;
445 SV *fh; 513
514#ifndef _WIN32
515 if (req->result >= 0)
516 {
517 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
518 HV *hv = newHV ();
519 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
520 * chooses to make it a struct.
521 */
522 unsigned long fsid = 0;
523 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
446 524
447 PUSHs (sv_2mortal (newSViv (req->result))); 525 rv = sv_2mortal (newRV_noinc ((SV *)hv));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451 526
452 fh = POPs; 527 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
453 PUSHMARK (SP); 528 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
529 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
530 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
531 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
532 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
533 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
534 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
535 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
536 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
537 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
538 }
539#endif
540
454 XPUSHs (fh); 541 PUSHs (rv);
455 } 542 }
543
456 break; 544 break;
457 545
458 case REQ_GROUP: 546 case EIO_GROUP:
459 req->int1 = 2; /* mark group as finished */ 547 req->int1 = 2; /* mark group as finished */
460 548
461 if (req->sv1) 549 if (req->sv1)
462 { 550 {
463 int i; 551 int i;
… …
467 for (i = 0; i <= AvFILL (av); ++i) 555 for (i = 0; i <= AvFILL (av); ++i)
468 PUSHs (*av_fetch (av, i, 0)); 556 PUSHs (*av_fetch (av, i, 0));
469 } 557 }
470 break; 558 break;
471 559
472 case REQ_NOP: 560 case EIO_NOP:
473 case REQ_BUSY: 561 case EIO_BUSY:
474 break; 562 break;
475 563
476 case REQ_READLINK: 564 case EIO_READLINK:
565 case EIO_REALPATH:
477 if (req->result > 0) 566 if (req->result > 0)
567 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
568 break;
569
570 case EIO_STAT:
571 case EIO_LSTAT:
572 case EIO_FSTAT:
573 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
574
575 if (!(PL_laststatval = req->result))
576 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
577 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
578
579 PUSHs (sv_result);
580 break;
581
582 case EIO_SEEK:
583 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
584 break;
585
586 case EIO_READ:
587 {
588 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
589 *SvEND (req->sv2) = 0;
590 SvPOK_only (req->sv2);
591 SvSETMAGIC (req->sv2);
592 PUSHs (sv_result);
593 }
594 break;
595
596 case EIO_CUSTOM:
597 if (req->feed == fiemap)
478 { 598 {
479 SvCUR_set (req->sv1, req->result); 599#if HAVE_FIEMAP
480 *SvEND (req->sv1) = 0;
481 PUSHs (req->sv1); 600 if (!req->result)
601 {
602 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
603
604 if (fiemap->fm_extent_count)
605 {
606 AV *av = newAV ();
607 int i;
608
609 while (fiemap->fm_mapped_extents)
610 {
611 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
612 AV *ext_av = newAV ();
613
614 av_store (ext_av, 3, newSVuv (extent->fe_flags));
615 av_store (ext_av, 2, newSVval64 (extent->fe_length));
616 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
617 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
618
619 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
620 }
621
622 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
623 }
624 else
625 {
626 SvIV_set (sv_result, fiemap->fm_mapped_extents);
627 PUSHs (sv_result);
628 }
629 }
630#endif
482 } 631 }
632 else
633 PUSHs (sv_result);
483 break; 634 break;
484 635
485 case REQ_STAT: 636 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
486 case REQ_LSTAT: 637 if (req->result > 0)
487 case REQ_FSTAT: 638 SvIV_set (sv_result, 0);
488 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 639 /* FALLTHROUGH */
489 PL_laststatval = req->result;
490 PL_statcache = *(Stat_t *)(req->ptr2);
491 PUSHs (sv_2mortal (newSViv (req->result)));
492 break;
493
494 case REQ_READ:
495 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
496 *SvEND (req->sv1) = 0;
497 PUSHs (sv_2mortal (newSViv (req->result)));
498 break;
499 640
500 default: 641 default:
501 PUSHs (sv_2mortal (newSViv (req->result))); 642 PUSHs (sv_result);
502 break; 643 break;
503 } 644 }
504 645
505 errno = req->errorno; 646 errno = req->errorno;
506 647
507 PUTBACK; 648 PUTBACK;
508 call_sv (req->callback, G_VOID | G_EVAL); 649 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509 SPAGAIN; 650 SPAGAIN;
651
652 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
653 SvREFCNT_dec (sv_result);
654 else
655 sv_result_cache = sv_result;
510 656
511 FREETMPS; 657 FREETMPS;
512 LEAVE; 658 LEAVE;
659
660 PUTBACK;
513 } 661 }
514 662
515 if (req->grp) 663 return !!SvTRUE (ERRSV);
516 {
517 aio_req grp = req->grp;
518
519 /* unlink request */
520 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
521 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
522
523 if (grp->grp_first == req)
524 grp->grp_first = req->grp_next;
525
526 aio_grp_dec (grp);
527 }
528
529 if (SvTRUE (ERRSV))
530 {
531 req_free (req);
532 croak (0);
533 }
534} 664}
535 665
536static void req_free (aio_req req) 666static void
667req_destroy (aio_req req)
537{ 668{
538 if (req->self) 669 if (req->self)
539 { 670 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 671 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 672 SvREFCNT_dec (req->self);
542 } 673 }
543 674
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 675 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 676 SvREFCNT_dec (req->sv2);
677 SvREFCNT_dec (req->sv3);
678 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 679 SvREFCNT_dec (req->callback);
548 680
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 681 free (req);
553} 682}
554 683
684static void
555static void req_cancel_subs (aio_req grp) 685req_cancel_subs (aio_req grp)
556{ 686{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 687 if (grp->type != EIO_GROUP)
560 return; 688 return;
561 689
562 SvREFCNT_dec (grp->sv2); 690 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 691 grp->sv2 = 0;
564 692
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 693 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 694}
568 695
569static void req_cancel (aio_req req) 696static void ecb_cold
697create_respipe (void)
570{ 698{
571 req->flags |= FLAG_CANCELLED; 699 if (s_epipe_renew (&respipe))
572 700 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 701}
575 702
576static void *aio_proc(void *arg); 703static void
577 704poll_wait (void)
578static void start_thread (void)
579{ 705{
580 sigset_t fullsigset, oldsigset;
581 pthread_attr_t attr;
582
583 worker *wrk = calloc (1, sizeof (worker));
584
585 if (!wrk)
586 croak ("unable to allocate worker thread data");
587
588 pthread_attr_init (&attr);
589 pthread_attr_setstacksize (&attr, STACKSIZE);
590 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
591#ifdef PTHREAD_SCOPE_PROCESS
592 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
593#endif
594
595 sigfillset (&fullsigset);
596
597 LOCK (wrklock);
598 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
599
600 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
601 {
602 wrk->prev = &wrk_first;
603 wrk->next = wrk_first.next;
604 wrk_first.next->prev = wrk;
605 wrk_first.next = wrk;
606 ++started;
607 }
608 else
609 free (wrk);
610
611 sigprocmask (SIG_SETMASK, &oldsigset, 0);
612 UNLOCK (wrklock);
613}
614
615static void maybe_start_thread ()
616{
617 if (get_nthreads () >= wanted)
618 return;
619
620 /* todo: maybe use idle here, but might be less exact */
621 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
622 return;
623
624 start_thread ();
625}
626
627static void req_send (aio_req req)
628{
629 ++nreqs;
630
631 LOCK (reqlock);
632 ++nready;
633 reqq_push (&req_queue, req);
634 pthread_cond_signal (&reqwait);
635 UNLOCK (reqlock);
636
637 maybe_start_thread ();
638}
639
640static void end_thread (void)
641{
642 aio_req req;
643
644 Newz (0, req, 1, aio_cb);
645
646 req->type = REQ_QUIT;
647 req->pri = PRI_MAX + PRI_BIAS;
648
649 LOCK (reqlock);
650 reqq_push (&req_queue, req);
651 pthread_cond_signal (&reqwait);
652 UNLOCK (reqlock);
653
654 LOCK (wrklock);
655 --started;
656 UNLOCK (wrklock);
657}
658
659static void set_max_idle (int nthreads)
660{
661 if (WORDACCESS_UNSAFE) LOCK (reqlock);
662 max_idle = nthreads <= 0 ? 1 : nthreads;
663 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
664}
665
666static void min_parallel (int nthreads)
667{
668 if (wanted < nthreads)
669 wanted = nthreads;
670}
671
672static void max_parallel (int nthreads)
673{
674 if (wanted > nthreads)
675 wanted = nthreads;
676
677 while (started > wanted)
678 end_thread ();
679}
680
681static void poll_wait ()
682{
683 fd_set rfd;
684
685 while (nreqs) 706 while (eio_nreqs ())
686 { 707 {
687 int size; 708 int size;
688 if (WORDACCESS_UNSAFE) LOCK (reslock); 709
710 X_LOCK (EIO_POOL->reslock);
689 size = res_queue.size; 711 size = EIO_POOL->res_queue.size;
690 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 712 X_UNLOCK (EIO_POOL->reslock);
691 713
692 if (size) 714 if (size)
693 return; 715 return;
694 716
695 maybe_start_thread (); 717 etp_maybe_start_thread (EIO_POOL);
696 718
697 FD_ZERO(&rfd); 719 s_epipe_wait (&respipe);
698 FD_SET(respipe [0], &rfd);
699
700 select (respipe [0] + 1, &rfd, 0, 0, 0);
701 } 720 }
702} 721}
703 722
704static int poll_cb () 723static int
724poll_cb (void)
705{ 725{
706 dSP;
707 int count = 0;
708 int maxreqs = max_poll_reqs;
709 int do_croak = 0;
710 struct timeval tv_start, tv_now;
711 aio_req req;
712
713 if (max_poll_time)
714 gettimeofday (&tv_start, 0);
715
716 for (;;) 726 for (;;)
717 { 727 {
718 for (;;) 728 int res = eio_poll ();
729
730 if (res > 0)
731 croak (0);
732
733 if (!max_outstanding || max_outstanding > eio_nreqs ())
734 return res;
735
736 poll_wait ();
737 }
738}
739
740static void ecb_cold
741reinit (void)
742{
743 create_respipe ();
744
745 if (eio_init (want_poll, done_poll) < 0)
746 croak ("IO::AIO: unable to initialise eio library");
747}
748
749/*****************************************************************************/
750
751#if !_POSIX_MAPPED_FILES
752# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
753# define munmap(addr,length) EIO_ENOSYS ()
754#endif
755
756#if !_POSIX_MEMORY_PROTECTION
757# define mprotect(addr,len,prot) EIO_ENOSYS ()
758#endif
759
760#define MMAP_MAGIC PERL_MAGIC_ext
761
762static int ecb_cold
763mmap_free (pTHX_ SV *sv, MAGIC *mg)
764{
765 int old_errno = errno;
766 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
767 errno = old_errno;
768
769 mg->mg_obj = 0; /* just in case */
770
771 SvREADONLY_off (sv);
772
773 if (SvPVX (sv) != mg->mg_ptr)
774 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
775
776 SvCUR_set (sv, 0);
777 SvPVX (sv) = 0;
778 SvOK_off (sv);
779
780 return 0;
781}
782
783static MGVTBL mmap_vtbl = {
784 0, 0, 0, 0, mmap_free
785};
786
787/*****************************************************************************/
788
789static SV *
790get_cb (SV *cb_sv)
791{
792 SvGETMAGIC (cb_sv);
793 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
794}
795
796static aio_req ecb_noinline
797dreq (SV *callback)
798{
799 SV *cb_cv;
800 aio_req req;
801 int req_pri = next_pri;
802 next_pri = EIO_PRI_DEFAULT;
803
804 cb_cv = get_cb (callback);
805
806 req = calloc (sizeof (*req), 1);
807 if (!req)
808 croak ("out of memory during eio_req allocation");
809
810 req->callback = SvREFCNT_inc (cb_cv);
811 req->pri = req_pri;
812
813 return req;
814}
815
816#define dREQ \
817 aio_req req = dreq (callback); \
818
819#define REQ_SEND \
820 PUTBACK; \
821 req_submit (req); \
822 SPAGAIN; \
823 \
824 if (GIMME_V != G_VOID) \
825 XPUSHs (req_sv (req, aio_req_stash));
826
827ecb_inline void
828req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
829{
830 if (expect_false (SvROK (path)))
831 {
832 SV *rv = SvRV (path);
833 SV *wdob;
834
835 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
719 { 836 {
720 maybe_start_thread (); 837 path = AvARRAY (rv)[1];
838 wdob = AvARRAY (rv)[0];
721 839
722 LOCK (reslock); 840 if (SvOK (wdob))
723 req = reqq_shift (&res_queue);
724
725 if (req)
726 { 841 {
727 --npending; 842 *wd = SvAIO_WD (wdob);
728 843 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
729 if (!res_queue.size)
730 {
731 /* read any signals sent by the worker threads */
732 char buf [32];
733 while (read (respipe [0], buf, 32) == 32)
734 ;
735 }
736 }
737
738 UNLOCK (reslock);
739
740 if (!req)
741 break;
742
743 --nreqs;
744
745 if (req->type == REQ_GROUP && req->size)
746 {
747 req->int1 = 1; /* mark request as delayed */
748 continue;
749 } 844 }
750 else 845 else
751 { 846 *wd = EIO_INVALID_WD;
752 req_invoke (req);
753
754 count++;
755 }
756
757 req_free (req);
758
759 if (maxreqs && !--maxreqs)
760 break;
761
762 if (max_poll_time)
763 {
764 gettimeofday (&tv_now, 0);
765
766 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
767 break;
768 }
769 } 847 }
848 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
849 {
850 *wd = (aio_wd)(long)SvIVX (rv);
851 *wdsv = SvREFCNT_inc_NN (rv);
852 *ptr = ".";
853 return; /* path set to "." */
854 }
855 else
856 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
857 }
770 858
771 if (nreqs <= max_outstanding) 859 *pathsv = newSVsv (path);
860 *ptr = SvPVbyte_nolen (*pathsv);
861}
862
863static void ecb_noinline
864req_set_path1 (aio_req req, SV *path)
865{
866 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
867}
868
869static void ecb_noinline
870req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
871{
872 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
873
874 switch (SvTYPE (rv))
875 {
876 case SVt_PVIO:
877 case SVt_PVLV:
878 case SVt_PVGV:
879 req->type = type_fh;
880 req->sv1 = newSVsv (fh_or_path);
881 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
772 break; 882 break;
773 883
774 poll_wait (); 884 default:
775 885 req->type = type_path;
776 ++maxreqs; 886 req_set_path1 (req, fh_or_path);
887 break;
777 } 888 }
778
779 return count;
780} 889}
781 890
782static void create_pipe () 891XS(boot_IO__AIO) ecb_cold;
783{
784 if (pipe (respipe))
785 croak ("unable to initialize result pipe");
786 892
787 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
788 croak ("cannot set result pipe to nonblocking mode");
789
790 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
791 croak ("cannot set result pipe to nonblocking mode");
792}
793
794/*****************************************************************************/
795/* work around various missing functions */
796
797#if !HAVE_PREADWRITE
798# define pread aio_pread
799# define pwrite aio_pwrite
800
801/*
802 * make our pread/pwrite safe against themselves, but not against
803 * normal read/write by using a mutex. slows down execution a lot,
804 * but that's your problem, not mine.
805 */
806static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
807
808static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
809{
810 ssize_t res;
811 off_t ooffset;
812
813 LOCK (preadwritelock);
814 ooffset = lseek (fd, 0, SEEK_CUR);
815 lseek (fd, offset, SEEK_SET);
816 res = read (fd, buf, count);
817 lseek (fd, ooffset, SEEK_SET);
818 UNLOCK (preadwritelock);
819
820 return res;
821}
822
823static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
824{
825 ssize_t res;
826 off_t ooffset;
827
828 LOCK (preadwritelock);
829 ooffset = lseek (fd, 0, SEEK_CUR);
830 lseek (fd, offset, SEEK_SET);
831 res = write (fd, buf, count);
832 lseek (fd, offset, SEEK_SET);
833 UNLOCK (preadwritelock);
834
835 return res;
836}
837#endif
838
839#if !HAVE_FDATASYNC
840# define fdatasync fsync
841#endif
842
843#if !HAVE_READAHEAD
844# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
845
846static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
847{
848 dBUF;
849
850 while (count > 0)
851 {
852 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
853
854 pread (fd, aio_buf, len, offset);
855 offset += len;
856 count -= len;
857 }
858
859 errno = 0;
860}
861
862#endif
863
864#if !HAVE_READDIR_R
865# define readdir_r aio_readdir_r
866
867static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
868
869static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
870{
871 struct dirent *e;
872 int errorno;
873
874 LOCK (readdirlock);
875
876 e = readdir (dirp);
877 errorno = errno;
878
879 if (e)
880 {
881 *res = ent;
882 strcpy (ent->d_name, e->d_name);
883 }
884 else
885 *res = 0;
886
887 UNLOCK (readdirlock);
888
889 errno = errorno;
890 return e ? 0 : -1;
891}
892#endif
893
894/* sendfile always needs emulation */
895static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
896{
897 ssize_t res;
898
899 if (!count)
900 return 0;
901
902#if HAVE_SENDFILE
903# if __linux
904 res = sendfile (ofd, ifd, &offset, count);
905
906# elif __freebsd
907 /*
908 * Of course, the freebsd sendfile is a dire hack with no thoughts
909 * wasted on making it similar to other I/O functions.
910 */
911 {
912 off_t sbytes;
913 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
914
915 if (res < 0 && sbytes)
916 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
917 res = sbytes;
918 }
919
920# elif __hpux
921 res = sendfile (ofd, ifd, offset, count, 0, 0);
922
923# elif __solaris
924 {
925 struct sendfilevec vec;
926 size_t sbytes;
927
928 vec.sfv_fd = ifd;
929 vec.sfv_flag = 0;
930 vec.sfv_off = offset;
931 vec.sfv_len = count;
932
933 res = sendfilev (ofd, &vec, 1, &sbytes);
934
935 if (res < 0 && sbytes)
936 res = sbytes;
937 }
938
939# endif
940#else
941 res = -1;
942 errno = ENOSYS;
943#endif
944
945 if (res < 0
946 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
947#if __solaris
948 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
949#endif
950 )
951 )
952 {
953 /* emulate sendfile. this is a major pain in the ass */
954 dBUF;
955
956 res = 0;
957
958 while (count)
959 {
960 ssize_t cnt;
961
962 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
963
964 if (cnt <= 0)
965 {
966 if (cnt && !res) res = -1;
967 break;
968 }
969
970 cnt = write (ofd, aio_buf, cnt);
971
972 if (cnt <= 0)
973 {
974 if (cnt && !res) res = -1;
975 break;
976 }
977
978 offset += cnt;
979 res += cnt;
980 count -= cnt;
981 }
982 }
983
984 return res;
985}
986
987/* read a full directory */
988static void scandir_ (aio_req req, worker *self)
989{
990 DIR *dirp;
991 union
992 {
993 struct dirent d;
994 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
995 } *u;
996 struct dirent *entp;
997 char *name, *names;
998 int memlen = 4096;
999 int memofs = 0;
1000 int res = 0;
1001 int errorno;
1002
1003 LOCK (wrklock);
1004 self->dirp = dirp = opendir (req->ptr1);
1005 self->dbuf = u = malloc (sizeof (*u));
1006 req->flags |= FLAG_PTR2_FREE;
1007 req->ptr2 = names = malloc (memlen);
1008 UNLOCK (wrklock);
1009
1010 if (dirp && u && names)
1011 for (;;)
1012 {
1013 errno = 0;
1014 readdir_r (dirp, &u->d, &entp);
1015
1016 if (!entp)
1017 break;
1018
1019 name = entp->d_name;
1020
1021 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1022 {
1023 int len = strlen (name) + 1;
1024
1025 res++;
1026
1027 while (memofs + len > memlen)
1028 {
1029 memlen *= 2;
1030 LOCK (wrklock);
1031 req->ptr2 = names = realloc (names, memlen);
1032 UNLOCK (wrklock);
1033
1034 if (!names)
1035 break;
1036 }
1037
1038 memcpy (names + memofs, name, len);
1039 memofs += len;
1040 }
1041 }
1042
1043 if (errno)
1044 res = -1;
1045
1046 req->result = res;
1047}
1048
1049/*****************************************************************************/
1050
1051static void *aio_proc (void *thr_arg)
1052{
1053 aio_req req;
1054 struct timespec ts;
1055 worker *self = (worker *)thr_arg;
1056
1057 /* try to distribute timeouts somewhat evenly */
1058 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1059 * (1000000000UL / 1024UL);
1060
1061 for (;;)
1062 {
1063 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1064
1065 LOCK (reqlock);
1066
1067 for (;;)
1068 {
1069 self->req = req = reqq_shift (&req_queue);
1070
1071 if (req)
1072 break;
1073
1074 ++idle;
1075
1076 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1077 == ETIMEDOUT)
1078 {
1079 if (idle > max_idle)
1080 {
1081 --idle;
1082 UNLOCK (reqlock);
1083 LOCK (wrklock);
1084 --started;
1085 UNLOCK (wrklock);
1086 goto quit;
1087 }
1088
1089 /* we are allowed to idle, so do so without any timeout */
1090 pthread_cond_wait (&reqwait, &reqlock);
1091 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1092 }
1093
1094 --idle;
1095 }
1096
1097 --nready;
1098
1099 UNLOCK (reqlock);
1100
1101 errno = 0; /* strictly unnecessary */
1102
1103 if (!(req->flags & FLAG_CANCELLED))
1104 switch (req->type)
1105 {
1106 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1107 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1108
1109 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1110 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1111
1112 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1113 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1114 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1115
1116 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1117 case REQ_CLOSE: req->result = close (req->int1); break;
1118 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1119 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1120 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1121 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1122 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1123 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1124 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1125
1126 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1127 case REQ_FSYNC: req->result = fsync (req->int1); break;
1128 case REQ_READDIR: scandir_ (req, self); break;
1129
1130 case REQ_BUSY:
1131 {
1132 struct timeval tv;
1133
1134 tv.tv_sec = req->int1;
1135 tv.tv_usec = req->int2;
1136
1137 req->result = select (0, 0, 0, 0, &tv);
1138 }
1139
1140 case REQ_GROUP:
1141 case REQ_NOP:
1142 break;
1143
1144 case REQ_QUIT:
1145 goto quit;
1146
1147 default:
1148 req->result = ENOSYS;
1149 break;
1150 }
1151
1152 req->errorno = errno;
1153
1154 LOCK (reslock);
1155
1156 ++npending;
1157
1158 if (!reqq_push (&res_queue, req))
1159 /* write a dummy byte to the pipe so fh becomes ready */
1160 write (respipe [1], &respipe, 1);
1161
1162 self->req = 0;
1163 worker_clear (self);
1164
1165 UNLOCK (reslock);
1166 }
1167
1168quit:
1169 LOCK (wrklock);
1170 worker_free (self);
1171 UNLOCK (wrklock);
1172
1173 return 0;
1174}
1175
1176/*****************************************************************************/
1177
1178static void atfork_prepare (void)
1179{
1180 LOCK (wrklock);
1181 LOCK (reqlock);
1182 LOCK (reslock);
1183#if !HAVE_PREADWRITE
1184 LOCK (preadwritelock);
1185#endif
1186#if !HAVE_READDIR_R
1187 LOCK (readdirlock);
1188#endif
1189}
1190
1191static void atfork_parent (void)
1192{
1193#if !HAVE_READDIR_R
1194 UNLOCK (readdirlock);
1195#endif
1196#if !HAVE_PREADWRITE
1197 UNLOCK (preadwritelock);
1198#endif
1199 UNLOCK (reslock);
1200 UNLOCK (reqlock);
1201 UNLOCK (wrklock);
1202}
1203
1204static void atfork_child (void)
1205{
1206 aio_req prv;
1207
1208 while (prv = reqq_shift (&req_queue))
1209 req_free (prv);
1210
1211 while (prv = reqq_shift (&res_queue))
1212 req_free (prv);
1213
1214 while (wrk_first.next != &wrk_first)
1215 {
1216 worker *wrk = wrk_first.next;
1217
1218 if (wrk->req)
1219 req_free (wrk->req);
1220
1221 worker_clear (wrk);
1222 worker_free (wrk);
1223 }
1224
1225 started = 0;
1226 idle = 0;
1227 nreqs = 0;
1228 nready = 0;
1229 npending = 0;
1230
1231 close (respipe [0]);
1232 close (respipe [1]);
1233 create_pipe ();
1234
1235 atfork_parent ();
1236}
1237
1238#define dREQ \
1239 aio_req req; \
1240 int req_pri = next_pri; \
1241 next_pri = DEFAULT_PRI + PRI_BIAS; \
1242 \
1243 if (SvOK (callback) && !SvROK (callback)) \
1244 croak ("callback must be undef or of reference type"); \
1245 \
1246 Newz (0, req, 1, aio_cb); \
1247 if (!req) \
1248 croak ("out of memory during aio_req allocation"); \
1249 \
1250 req->callback = newSVsv (callback); \
1251 req->pri = req_pri
1252
1253#define REQ_SEND \
1254 req_send (req); \
1255 \
1256 if (GIMME_V != G_VOID) \
1257 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1258
1259MODULE = IO::AIO PACKAGE = IO::AIO 893MODULE = IO::AIO PACKAGE = IO::AIO
1260 894
1261PROTOTYPES: ENABLE 895PROTOTYPES: ENABLE
1262 896
1263BOOT: 897BOOT:
1264{ 898{
899 static const struct {
900 const char *name;
901 IV iv;
902 } *civ, const_iv[] = {
903# define const_niv(name, value) { # name, (IV) value },
904# define const_iv(name) { # name, (IV) name },
905# define const_eio(name) { # name, (IV) EIO_ ## name },
906
907 /* you have to re-run ./gendef0 after adding/removing any constants here */
908 /* the first block can be undef if missing */
909 const_iv (ENOSYS)
910 const_iv (EXDEV)
911 const_iv (EBADR)
912
913 /* for lseek */
914 const_iv (SEEK_DATA)
915 const_iv (SEEK_HOLE)
916
917 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
918 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
919 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
920 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
921 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
922 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
923
924 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
925 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
926 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
927 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
928 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
929
930 /* the second block will be 0 when missing */
931 const_iv (O_RDONLY)
932 const_iv (O_WRONLY)
933 const_iv (O_RDWR)
934 const_iv (O_CREAT)
935 const_iv (O_TRUNC)
936 const_iv (O_EXCL)
937 const_iv (O_APPEND)
938
939 const_iv (O_ASYNC)
940 const_iv (O_DIRECT)
941 const_iv (O_NOATIME)
942
943 const_iv (O_CLOEXEC)
944 const_iv (O_NOCTTY)
945 const_iv (O_NOFOLLOW)
946 const_iv (O_NONBLOCK)
947 const_iv (O_EXEC)
948 const_iv (O_SEARCH)
949 const_iv (O_DIRECTORY)
950 const_iv (O_DSYNC)
951 const_iv (O_RSYNC)
952 const_iv (O_SYNC)
953 const_iv (O_PATH)
954 const_iv (O_TMPFILE)
955 const_iv (O_TTY_INIT)
956
957 const_iv (S_IFIFO)
958 const_iv (S_IFCHR)
959 const_iv (S_IFBLK)
960 const_iv (S_IFLNK)
961 const_iv (S_IFREG)
962 const_iv (S_IFDIR)
963 const_iv (S_IFWHT)
964 const_iv (S_IFSOCK)
965 const_iv (S_IFMT)
966
967 const_iv (ST_RDONLY)
968 const_iv (ST_NOSUID)
969 const_iv (ST_NODEV)
970 const_iv (ST_NOEXEC)
971 const_iv (ST_SYNCHRONOUS)
972 const_iv (ST_MANDLOCK)
973 const_iv (ST_WRITE)
974 const_iv (ST_APPEND)
975 const_iv (ST_IMMUTABLE)
976 const_iv (ST_NOATIME)
977 const_iv (ST_NODIRATIME)
978 const_iv (ST_RELATIME)
979
980 const_iv (PROT_NONE)
981 const_iv (PROT_EXEC)
982 const_iv (PROT_READ)
983 const_iv (PROT_WRITE)
984
985 const_iv (MAP_PRIVATE)
986 const_iv (MAP_SHARED)
987 const_iv (MAP_FIXED)
988 const_iv (MAP_ANONYMOUS)
989
990 /* linuxish */
991 const_iv (MAP_LOCKED)
992 const_iv (MAP_NORESERVE)
993 const_iv (MAP_POPULATE)
994 const_iv (MAP_NONBLOCK)
995 const_iv (MAP_GROWSDOWN)
996 const_iv (MAP_32BIT)
997 const_iv (MAP_HUGETLB)
998 const_iv (MAP_STACK)
999
1000 const_iv (F_DUPFD_CLOEXEC)
1001
1002 const_iv (F_OFD_GETLK)
1003 const_iv (F_OFD_SETLK)
1004 const_iv (F_OFD_GETLKW)
1005
1006 const_iv (FIFREEZE)
1007 const_iv (FITHAW)
1008 const_iv (FITRIM)
1009 const_iv (FICLONE)
1010 const_iv (FICLONERANGE)
1011 const_iv (FIDEDUPERANGE)
1012
1013 const_iv (FS_IOC_GETFLAGS)
1014 const_iv (FS_IOC_SETFLAGS)
1015 const_iv (FS_IOC_GETVERSION)
1016 const_iv (FS_IOC_SETVERSION)
1017 const_iv (FS_IOC_FIEMAP)
1018 const_iv (FS_IOC_FSGETXATTR)
1019 const_iv (FS_IOC_FSSETXATTR)
1020 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1021 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1022 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1023
1024 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1025
1026 const_iv (FS_SECRM_FL)
1027 const_iv (FS_UNRM_FL)
1028 const_iv (FS_COMPR_FL)
1029 const_iv (FS_SYNC_FL)
1030 const_iv (FS_IMMUTABLE_FL)
1031 const_iv (FS_APPEND_FL)
1032 const_iv (FS_NODUMP_FL)
1033 const_iv (FS_NOATIME_FL)
1034 const_iv (FS_DIRTY_FL)
1035 const_iv (FS_COMPRBLK_FL)
1036 const_iv (FS_NOCOMP_FL)
1037 const_iv (FS_ENCRYPT_FL)
1038 const_iv (FS_BTREE_FL)
1039 const_iv (FS_INDEX_FL)
1040 const_iv (FS_JOURNAL_DATA_FL)
1041 const_iv (FS_NOTAIL_FL)
1042 const_iv (FS_DIRSYNC_FL)
1043 const_iv (FS_TOPDIR_FL)
1044 const_iv (FS_FL_USER_MODIFIABLE)
1045
1046 const_iv (FS_XFLAG_REALTIME)
1047 const_iv (FS_XFLAG_PREALLOC)
1048 const_iv (FS_XFLAG_IMMUTABLE)
1049 const_iv (FS_XFLAG_APPEND)
1050 const_iv (FS_XFLAG_SYNC)
1051 const_iv (FS_XFLAG_NOATIME)
1052 const_iv (FS_XFLAG_NODUMP)
1053 const_iv (FS_XFLAG_RTINHERIT)
1054 const_iv (FS_XFLAG_PROJINHERIT)
1055 const_iv (FS_XFLAG_NOSYMLINKS)
1056 const_iv (FS_XFLAG_EXTSIZE)
1057 const_iv (FS_XFLAG_EXTSZINHERIT)
1058 const_iv (FS_XFLAG_NODEFRAG)
1059 const_iv (FS_XFLAG_FILESTREAM)
1060 const_iv (FS_XFLAG_DAX)
1061 const_iv (FS_XFLAG_HASATTR)
1062
1063 const_iv (FIEMAP_FLAG_SYNC)
1064 const_iv (FIEMAP_FLAG_XATTR)
1065 const_iv (FIEMAP_FLAGS_COMPAT)
1066 const_iv (FIEMAP_EXTENT_LAST)
1067 const_iv (FIEMAP_EXTENT_UNKNOWN)
1068 const_iv (FIEMAP_EXTENT_DELALLOC)
1069 const_iv (FIEMAP_EXTENT_ENCODED)
1070 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1071 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1072 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1073 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1074 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1075 const_iv (FIEMAP_EXTENT_MERGED)
1076 const_iv (FIEMAP_EXTENT_SHARED)
1077
1078 const_iv (SPLICE_F_MOVE)
1079 const_iv (SPLICE_F_NONBLOCK)
1080 const_iv (SPLICE_F_MORE)
1081 const_iv (SPLICE_F_GIFT)
1082
1083 /* these are libeio constants, and are independent of gendef0 */
1084 const_eio (SEEK_SET)
1085 const_eio (SEEK_CUR)
1086 const_eio (SEEK_END)
1087
1088 const_eio (MCL_FUTURE)
1089 const_eio (MCL_CURRENT)
1090
1091 const_eio (MS_ASYNC)
1092 const_eio (MS_INVALIDATE)
1093 const_eio (MS_SYNC)
1094
1095 const_eio (MT_MODIFY)
1096
1097 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1098 const_eio (SYNC_FILE_RANGE_WRITE)
1099 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1100
1101 const_eio (FALLOC_FL_KEEP_SIZE)
1102 const_eio (FALLOC_FL_PUNCH_HOLE)
1103 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1104 const_eio (FALLOC_FL_ZERO_RANGE)
1105 const_eio (FALLOC_FL_INSERT_RANGE)
1106 const_eio (FALLOC_FL_UNSHARE_RANGE)
1107
1108 const_eio (RENAME_NOREPLACE)
1109 const_eio (RENAME_EXCHANGE)
1110 const_eio (RENAME_WHITEOUT)
1111
1112 const_eio (READDIR_DENTS)
1113 const_eio (READDIR_DIRS_FIRST)
1114 const_eio (READDIR_STAT_ORDER)
1115 const_eio (READDIR_FOUND_UNKNOWN)
1116
1117 const_eio (DT_UNKNOWN)
1118 const_eio (DT_FIFO)
1119 const_eio (DT_CHR)
1120 const_eio (DT_DIR)
1121 const_eio (DT_BLK)
1122 const_eio (DT_REG)
1123 const_eio (DT_LNK)
1124 const_eio (DT_SOCK)
1125 const_eio (DT_WHT)
1126 };
1127
1265 HV *stash = gv_stashpv ("IO::AIO", 1); 1128 aio_stash = gv_stashpv ("IO::AIO" , 1);
1129 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1130 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1131 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1266 1132
1267 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1133 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1268 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1134 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1269 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1270 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1271 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1272 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1273 1135
1274 create_pipe (); 1136 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1275 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1276}
1277 1137
1138 reinit ();
1139}
1140
1278void 1141void
1142reinit ()
1143 PROTOTYPE:
1144
1145void
1279max_poll_reqs (int nreqs) 1146max_poll_reqs (unsigned int nreqs)
1280 PROTOTYPE: $ 1147 PROTOTYPE: $
1281 CODE: 1148 CODE:
1282 max_poll_reqs = nreqs; 1149 eio_set_max_poll_reqs (nreqs);
1283 1150
1284void 1151void
1285max_poll_time (double nseconds) 1152max_poll_time (double nseconds)
1286 PROTOTYPE: $ 1153 PROTOTYPE: $
1287 CODE: 1154 CODE:
1288 max_poll_time = nseconds * AIO_TICKS; 1155 eio_set_max_poll_time (nseconds);
1289 1156
1290void 1157void
1291min_parallel (int nthreads) 1158min_parallel (unsigned int nthreads)
1292 PROTOTYPE: $
1293
1294void
1295max_parallel (int nthreads)
1296 PROTOTYPE: $
1297
1298void
1299max_idle (int nthreads)
1300 PROTOTYPE: $ 1159 PROTOTYPE: $
1301 CODE: 1160 CODE:
1302 set_max_idle (nthreads); 1161 eio_set_min_parallel (nthreads);
1303 1162
1304int 1163void
1305max_outstanding (int maxreqs) 1164max_parallel (unsigned int nthreads)
1306 PROTOTYPE: $ 1165 PROTOTYPE: $
1307 CODE: 1166 CODE:
1308 RETVAL = max_outstanding; 1167 eio_set_max_parallel (nthreads);
1168
1169void
1170max_idle (unsigned int nthreads)
1171 PROTOTYPE: $
1172 CODE:
1173 eio_set_max_idle (nthreads);
1174
1175void
1176idle_timeout (unsigned int seconds)
1177 PROTOTYPE: $
1178 CODE:
1179 eio_set_idle_timeout (seconds);
1180
1181void
1182max_outstanding (unsigned int maxreqs)
1183 PROTOTYPE: $
1184 CODE:
1309 max_outstanding = maxreqs; 1185 max_outstanding = maxreqs;
1310 OUTPUT:
1311 RETVAL
1312 1186
1313void 1187void
1314aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1188aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1315 SV8 * pathname
1316 int flags
1317 int mode
1318 SV * callback
1319 PROTOTYPE: $$$;$
1320 PPCODE: 1189 PPCODE:
1321{ 1190{
1322 dREQ; 1191 dREQ;
1323 1192
1193 req->type = EIO_WD_OPEN;
1194 req_set_path1 (req, pathname);
1195
1196 REQ_SEND;
1197}
1198
1199void
1200aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1201 PPCODE:
1202{
1203 dREQ;
1204
1324 req->type = REQ_OPEN; 1205 req->type = EIO_OPEN;
1325 req->sv1 = newSVsv (pathname); 1206 req_set_path1 (req, pathname);
1326 req->ptr1 = SvPVbyte_nolen (req->sv1);
1327 req->int1 = flags; 1207 req->int1 = flags;
1328 req->mode = mode; 1208 req->int2 = mode;
1329 1209
1330 REQ_SEND; 1210 REQ_SEND;
1331} 1211}
1332 1212
1333void 1213void
1334aio_close (fh,callback=&PL_sv_undef) 1214aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1335 SV * fh
1336 SV * callback
1337 PROTOTYPE: $;$
1338 ALIAS: 1215 ALIAS:
1339 aio_close = REQ_CLOSE
1340 aio_fsync = REQ_FSYNC 1216 aio_fsync = EIO_FSYNC
1341 aio_fdatasync = REQ_FDATASYNC 1217 aio_fdatasync = EIO_FDATASYNC
1218 aio_syncfs = EIO_SYNCFS
1342 PPCODE: 1219 PPCODE:
1343{ 1220{
1221 int fd = s_fileno_croak (fh, 0);
1344 dREQ; 1222 dREQ;
1345 1223
1346 req->type = ix; 1224 req->type = ix;
1347 req->fh = newSVsv (fh); 1225 req->sv1 = newSVsv (fh);
1348 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1226 req->int1 = fd;
1349 1227
1350 REQ_SEND (req); 1228 REQ_SEND;
1351} 1229}
1352 1230
1353void 1231void
1232aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1233 PPCODE:
1234{
1235 int fd = s_fileno_croak (fh, 0);
1236 dREQ;
1237
1238 req->type = EIO_SYNC_FILE_RANGE;
1239 req->sv1 = newSVsv (fh);
1240 req->int1 = fd;
1241 req->offs = offset;
1242 req->size = nbytes;
1243 req->int2 = flags;
1244
1245 REQ_SEND;
1246}
1247
1248void
1249aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1250 PPCODE:
1251{
1252 int fd = s_fileno_croak (fh, 0);
1253 dREQ;
1254
1255 req->type = EIO_FALLOCATE;
1256 req->sv1 = newSVsv (fh);
1257 req->int1 = fd;
1258 req->int2 = mode;
1259 req->offs = offset;
1260 req->size = len;
1261
1262 REQ_SEND;
1263}
1264
1265void
1266aio_close (SV *fh, SV *callback = &PL_sv_undef)
1267 PPCODE:
1268{
1269 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1270 int fd = s_fileno_croak (fh, 0);
1271 dREQ;
1272
1273 if (expect_false (close_fd < 0))
1274 {
1275 int pipefd [2];
1276
1277 if (
1278#ifdef _WIN32
1279 _pipe (pipefd, 1, _O_BINARY) < 0
1280#else
1281 pipe (pipefd) < 0
1282 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1283#endif
1284 || close (pipefd [1]) < 0
1285 )
1286 abort (); /*D*/
1287
1288 close_fd = pipefd [0];
1289 }
1290
1291 req->type = EIO_DUP2;
1292 req->int1 = close_fd;
1293 req->sv2 = newSVsv (fh);
1294 req->int2 = fd;
1295
1296 REQ_SEND;
1297}
1298
1299void
1300aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1301 PPCODE:
1302{
1303 int fd = s_fileno_croak (fh, 0);
1304 dREQ;
1305
1306 req->type = EIO_SEEK;
1307 req->sv1 = newSVsv (fh);
1308 req->int1 = fd;
1309 req->offs = SvVAL64 (offset);
1310 req->int2 = whence;
1311
1312 REQ_SEND;
1313}
1314
1315void
1354aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1316aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1355 SV * fh
1356 UV offset
1357 UV length
1358 SV8 * data
1359 UV dataoffset
1360 SV * callback
1361 ALIAS: 1317 ALIAS:
1362 aio_read = REQ_READ 1318 aio_read = EIO_READ
1363 aio_write = REQ_WRITE 1319 aio_write = EIO_WRITE
1364 PROTOTYPE: $$$$$;$
1365 PPCODE: 1320 PPCODE:
1366{ 1321{
1367 STRLEN svlen; 1322 STRLEN svlen;
1323 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1368 char *svptr = SvPVbyte (data, svlen); 1324 char *svptr = SvPVbyte (data, svlen);
1369 1325 UV len = SvUV (length);
1370 SvUPGRADE (data, SVt_PV);
1371 SvPOK_on (data);
1372 1326
1373 if (dataoffset < 0) 1327 if (dataoffset < 0)
1374 dataoffset += svlen; 1328 dataoffset += svlen;
1375 1329
1376 if (dataoffset < 0 || dataoffset > svlen) 1330 if (dataoffset < 0 || dataoffset > svlen)
1377 croak ("data offset outside of string"); 1331 croak ("dataoffset outside of data scalar");
1378 1332
1379 if (ix == REQ_WRITE) 1333 if (ix == EIO_WRITE)
1380 { 1334 {
1381 /* write: check length and adjust. */ 1335 /* write: check length and adjust. */
1382 if (length < 0 || length + dataoffset > svlen) 1336 if (!SvOK (length) || len + dataoffset > svlen)
1383 length = svlen - dataoffset; 1337 len = svlen - dataoffset;
1384 } 1338 }
1385 else 1339 else
1386 { 1340 {
1387 /* read: grow scalar as necessary */ 1341 /* read: check type and grow scalar as necessary */
1342 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1388 svptr = SvGROW (data, length + dataoffset); 1343 svptr = sv_grow (data, len + dataoffset + 1);
1344 else if (SvCUR (data) < len + dataoffset)
1345 croak ("length + dataoffset outside of scalar, and cannot grow");
1389 } 1346 }
1390
1391 if (length < 0)
1392 croak ("length must not be negative");
1393 1347
1394 { 1348 {
1395 dREQ; 1349 dREQ;
1396 1350
1397 req->type = ix; 1351 req->type = ix;
1398 req->fh = newSVsv (fh); 1352 req->sv1 = newSVsv (fh);
1399 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1353 req->int1 = fd;
1400 : IoOFP (sv_2io (fh))); 1354 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1401 req->offs = offset;
1402 req->size = length; 1355 req->size = len;
1403 req->sv1 = SvREFCNT_inc (data); 1356 req->sv2 = SvREFCNT_inc (data);
1404 req->ptr1 = (char *)svptr + dataoffset; 1357 req->ptr2 = (char *)svptr + dataoffset;
1405 req->stroffset = dataoffset; 1358 req->stroffset = dataoffset;
1406 1359
1407 if (!SvREADONLY (data)) 1360 if (!SvREADONLY (data))
1408 { 1361 {
1409 SvREADONLY_on (data); 1362 SvREADONLY_on (data);
1410 req->flags |= FLAG_SV1_RO_OFF; 1363 req->flags |= FLAG_SV2_RO_OFF;
1411 } 1364 }
1412 1365
1413 REQ_SEND; 1366 REQ_SEND;
1414 } 1367 }
1415} 1368}
1416 1369
1417void 1370void
1418aio_readlink (path,callback=&PL_sv_undef) 1371aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1419 SV8 * path 1372 ALIAS:
1420 SV * callback 1373 aio_ioctl = EIO_IOCTL
1421 PROTOTYPE: $$;$ 1374 aio_fcntl = EIO_FCNTL
1422 PPCODE: 1375 PPCODE:
1423{ 1376{
1424 SV *data; 1377 int fd = s_fileno_croak (fh, 0);
1378 char *svptr;
1379
1380 if (SvPOK (arg) || !SvNIOK (arg))
1381 {
1382 STRLEN svlen;
1383 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1384#ifdef IOCPARM_LEN
1385 STRLEN need = IOCPARM_LEN (request);
1386#else
1387 STRLEN need = 256;
1388#endif
1389
1390 if (svlen < need)
1391 svptr = SvGROW (arg, need);
1392 }
1393 else
1394 svptr = (char *)SvIV (arg);
1395
1396 {
1397 dREQ;
1398
1399 req->type = ix;
1400 req->sv1 = newSVsv (fh);
1401 req->int1 = fd;
1402 req->int2 = (long)request;
1403 req->sv2 = SvREFCNT_inc (arg);
1404 req->ptr2 = svptr;
1405
1406 REQ_SEND;
1407 }
1408}
1409
1410void
1411aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1412 ALIAS:
1413 aio_readlink = EIO_READLINK
1414 aio_realpath = EIO_REALPATH
1415 PPCODE:
1416{
1425 dREQ; 1417 dREQ;
1426 1418
1427 data = newSV (NAME_MAX);
1428 SvPOK_on (data);
1429
1430 req->type = REQ_READLINK; 1419 req->type = ix;
1431 req->fh = newSVsv (path); 1420 req_set_path1 (req, pathname);
1432 req->ptr2 = SvPVbyte_nolen (req->fh);
1433 req->sv1 = data;
1434 req->ptr1 = SvPVbyte_nolen (data);
1435 1421
1436 REQ_SEND; 1422 REQ_SEND;
1437} 1423}
1438 1424
1439void 1425void
1440aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1426aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1441 SV * out_fh
1442 SV * in_fh
1443 UV in_offset
1444 UV length
1445 SV * callback
1446 PROTOTYPE: $$$$;$
1447 PPCODE: 1427 PPCODE:
1448{ 1428{
1429 int ifd = s_fileno_croak (in_fh , 0);
1430 int ofd = s_fileno_croak (out_fh, 1);
1449 dREQ; 1431 dREQ;
1450 1432
1451 req->type = REQ_SENDFILE; 1433 req->type = EIO_SENDFILE;
1452 req->fh = newSVsv (out_fh); 1434 req->sv1 = newSVsv (out_fh);
1453 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1435 req->int1 = ofd;
1454 req->sv2 = newSVsv (in_fh); 1436 req->sv2 = newSVsv (in_fh);
1455 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1437 req->int2 = ifd;
1456 req->offs = in_offset; 1438 req->offs = in_offset;
1457 req->size = length; 1439 req->size = length;
1458 1440
1459 REQ_SEND; 1441 REQ_SEND;
1460} 1442}
1461 1443
1462void 1444void
1463aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1445aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1464 SV * fh
1465 UV offset
1466 IV length
1467 SV * callback
1468 PROTOTYPE: $$$;$
1469 PPCODE: 1446 PPCODE:
1470{ 1447{
1448 int fd = s_fileno_croak (fh, 0);
1471 dREQ; 1449 dREQ;
1472 1450
1473 req->type = REQ_READAHEAD; 1451 req->type = EIO_READAHEAD;
1474 req->fh = newSVsv (fh); 1452 req->sv1 = newSVsv (fh);
1475 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1453 req->int1 = fd;
1476 req->offs = offset; 1454 req->offs = offset;
1477 req->size = length; 1455 req->size = length;
1478 1456
1479 REQ_SEND; 1457 REQ_SEND;
1480} 1458}
1481 1459
1482void 1460void
1483aio_stat (fh_or_path,callback=&PL_sv_undef) 1461aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1484 SV8 * fh_or_path
1485 SV * callback
1486 ALIAS: 1462 ALIAS:
1487 aio_stat = REQ_STAT 1463 aio_stat = EIO_STAT
1488 aio_lstat = REQ_LSTAT 1464 aio_lstat = EIO_LSTAT
1465 aio_statvfs = EIO_STATVFS
1489 PPCODE: 1466 PPCODE:
1490{ 1467{
1491 dREQ; 1468 dREQ;
1492 1469
1493 req->ptr2 = malloc (sizeof (Stat_t)); 1470 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1494 if (!req->ptr2)
1495 {
1496 req_free (req);
1497 croak ("out of memory during aio_stat statdata allocation");
1498 }
1499
1500 req->flags |= FLAG_PTR2_FREE;
1501
1502 if (SvPOK (fh_or_path))
1503 {
1504 req->type = ix;
1505 req->sv1 = newSVsv (fh_or_path);
1506 req->ptr1 = SvPVbyte_nolen (req->sv1);
1507 }
1508 else
1509 {
1510 req->type = REQ_FSTAT;
1511 req->fh = newSVsv (fh_or_path);
1512 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1513 }
1514 1471
1515 REQ_SEND; 1472 REQ_SEND;
1516} 1473}
1517 1474
1475UV
1476major (UV dev)
1477 ALIAS:
1478 minor = 1
1479 CODE:
1480 RETVAL = ix ? minor (dev) : major (dev);
1481 OUTPUT:
1482 RETVAL
1483
1484UV
1485makedev (UV maj, UV min)
1486 CODE:
1487 RETVAL = makedev (maj, min);
1488 OUTPUT:
1489 RETVAL
1490
1518void 1491void
1492aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1493 PPCODE:
1494{
1495 dREQ;
1496
1497 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1498 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1499 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1500
1501 REQ_SEND;
1502}
1503
1504void
1505aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1506 PPCODE:
1507{
1508 dREQ;
1509
1510 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1511 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1512
1513 REQ_SEND;
1514}
1515
1516void
1517aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1518 PPCODE:
1519{
1520 dREQ;
1521
1522 req->int2 = mode;
1523 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1524
1525 REQ_SEND;
1526}
1527
1528void
1529aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1530 PPCODE:
1531{
1532 dREQ;
1533
1534 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1535 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1536 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1537
1538 REQ_SEND;
1539}
1540
1541void
1542aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req->type = EIO_READDIR;
1548 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1549
1550 if (flags & EIO_READDIR_DENTS)
1551 req->int1 |= EIO_READDIR_CUSTOM2;
1552
1553 req_set_path1 (req, pathname);
1554
1555 REQ_SEND;
1556}
1557
1558void
1559aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1560 PPCODE:
1561{
1562 dREQ;
1563
1564 req->type = EIO_MKDIR;
1565 req->int2 = mode;
1566 req_set_path1 (req, pathname);
1567
1568 REQ_SEND;
1569}
1570
1571void
1519aio_unlink (pathname,callback=&PL_sv_undef) 1572aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1520 SV8 * pathname
1521 SV * callback
1522 ALIAS: 1573 ALIAS:
1523 aio_unlink = REQ_UNLINK 1574 aio_unlink = EIO_UNLINK
1524 aio_rmdir = REQ_RMDIR 1575 aio_rmdir = EIO_RMDIR
1525 aio_readdir = REQ_READDIR 1576 aio_readdir = EIO_READDIR
1526 PPCODE: 1577 PPCODE:
1527{ 1578{
1528 dREQ; 1579 dREQ;
1529 1580
1530 req->type = ix; 1581 req->type = ix;
1531 req->sv1 = newSVsv (pathname); 1582 req_set_path1 (req, pathname);
1532 req->ptr1 = SvPVbyte_nolen (req->sv1);
1533 1583
1534 REQ_SEND; 1584 REQ_SEND;
1535} 1585}
1536 1586
1537void 1587void
1538aio_link (oldpath,newpath,callback=&PL_sv_undef) 1588aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1539 SV8 * oldpath
1540 SV8 * newpath
1541 SV * callback
1542 ALIAS: 1589 ALIAS:
1543 aio_link = REQ_LINK 1590 aio_link = EIO_LINK
1544 aio_symlink = REQ_SYMLINK 1591 aio_symlink = EIO_SYMLINK
1545 aio_rename = REQ_RENAME 1592 aio_rename = EIO_RENAME
1546 PPCODE: 1593 PPCODE:
1547{ 1594{
1595 eio_wd wd2 = 0;
1548 dREQ; 1596 dREQ;
1549 1597
1550 req->type = ix; 1598 req->type = ix;
1551 req->fh = newSVsv (oldpath); 1599 req_set_path1 (req, oldpath);
1552 req->ptr2 = SvPVbyte_nolen (req->fh); 1600 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1553 req->sv1 = newSVsv (newpath); 1601 req->int3 = (long)wd2;
1554 req->ptr1 = SvPVbyte_nolen (req->sv1);
1555 1602
1556 REQ_SEND; 1603 REQ_SEND;
1557} 1604}
1558 1605
1559void 1606void
1560aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1607aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1561 SV8 * pathname
1562 SV * callback
1563 UV mode
1564 UV dev
1565 PPCODE: 1608 PPCODE:
1566{ 1609{
1610 eio_wd wd2 = 0;
1567 dREQ; 1611 dREQ;
1568 1612
1569 req->type = REQ_MKNOD; 1613 req->type = EIO_RENAME;
1570 req->sv1 = newSVsv (pathname); 1614 req_set_path1 (req, oldpath);
1571 req->ptr1 = SvPVbyte_nolen (req->sv1); 1615 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1572 req->mode = (mode_t)mode; 1616 req->int2 = flags;
1573 req->offs = dev; 1617 req->int3 = (long)wd2;
1574 1618
1575 REQ_SEND; 1619 REQ_SEND;
1576} 1620}
1577 1621
1578void 1622void
1579aio_busy (delay,callback=&PL_sv_undef) 1623aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1580 double delay
1581 SV * callback
1582 PPCODE: 1624 PPCODE:
1583{ 1625{
1584 dREQ; 1626 dREQ;
1585 1627
1586 req->type = REQ_BUSY; 1628 req->type = EIO_MKNOD;
1587 req->int1 = delay < 0. ? 0 : delay; 1629 req->int2 = (mode_t)mode;
1588 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1630 req->offs = dev;
1589 1631 req_set_path1 (req, pathname);
1632
1590 REQ_SEND; 1633 REQ_SEND;
1591} 1634}
1592 1635
1593void 1636void
1594aio_group (callback=&PL_sv_undef) 1637aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1595 SV * callback 1638 ALIAS:
1596 PROTOTYPE: ;$ 1639 aio_mtouch = EIO_MTOUCH
1640 aio_msync = EIO_MSYNC
1597 PPCODE: 1641 PPCODE:
1598{ 1642{
1643 STRLEN svlen;
1644 char *svptr = SvPVbyte (data, svlen);
1645 UV len = SvUV (length);
1646
1647 if (flags < 0)
1648 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1649
1650 if (offset < 0)
1651 offset += svlen;
1652
1653 if (offset < 0 || offset > svlen)
1654 croak ("offset outside of scalar");
1655
1656 if (!SvOK (length) || len + offset > svlen)
1657 len = svlen - offset;
1658
1659 {
1660 dREQ;
1661
1662 req->type = ix;
1663 req->sv2 = SvREFCNT_inc (data);
1664 req->ptr2 = (char *)svptr + offset;
1665 req->size = len;
1666 req->int1 = flags;
1667
1668 REQ_SEND;
1669 }
1670}
1671
1672void
1673aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1674 PPCODE:
1675{
1676 STRLEN svlen;
1677 char *svptr = SvPVbyte (data, svlen);
1678 UV len = SvUV (length);
1679
1680 if (offset < 0)
1681 offset += svlen;
1682
1683 if (offset < 0 || offset > svlen)
1684 croak ("offset outside of scalar");
1685
1686 if (!SvOK (length) || len + offset > svlen)
1687 len = svlen - offset;
1688
1689 {
1690 dREQ;
1691
1692 req->type = EIO_MLOCK;
1693 req->sv2 = SvREFCNT_inc (data);
1694 req->ptr2 = (char *)svptr + offset;
1695 req->size = len;
1696
1697 REQ_SEND;
1698 }
1699}
1700
1701void
1702aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1703 PPCODE:
1704{
1705 dREQ;
1706
1707 req->type = EIO_MLOCKALL;
1708 req->int1 = flags;
1709
1710 REQ_SEND;
1711}
1712
1713void
1714aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1715 PPCODE:
1716{
1717 int fd = s_fileno_croak (fh, 0);
1599 dREQ; 1718 dREQ;
1600 1719
1601 req->type = REQ_GROUP; 1720 req->type = EIO_CUSTOM;
1721 req->sv1 = newSVsv (fh);
1722 req->int1 = fd;
1602 1723
1603 req_send (req); 1724 req->feed = fiemap;
1604 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1725#if HAVE_FIEMAP
1605} 1726 /* keep our fingers crossed that the next two types are 64 bit */
1727 req->offs = start;
1728 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1729 req->int2 = flags;
1730 req->int3 = SvOK (count) ? SvIV (count) : -1;
1731#endif
1606 1732
1733 REQ_SEND;
1734}
1735
1607void 1736void
1608aio_nop (callback=&PL_sv_undef) 1737aio_busy (double delay, SV *callback = &PL_sv_undef)
1609 SV * callback
1610 PPCODE: 1738 PPCODE:
1611{ 1739{
1612 dREQ; 1740 dREQ;
1613 1741
1614 req->type = REQ_NOP; 1742 req->type = EIO_BUSY;
1743 req->nv1 = delay < 0. ? 0. : delay;
1615 1744
1616 REQ_SEND; 1745 REQ_SEND;
1617} 1746}
1618 1747
1748void
1749aio_group (SV *callback = &PL_sv_undef)
1750 PPCODE:
1751{
1752 dREQ;
1753
1754 req->type = EIO_GROUP;
1755
1756 PUTBACK;
1757 req_submit (req);
1758 SPAGAIN;
1759
1760 XPUSHs (req_sv (req, aio_grp_stash));
1761}
1762
1763void
1764aio_nop (SV *callback = &PL_sv_undef)
1765 ALIAS:
1766 aio_nop = EIO_NOP
1767 aio_sync = EIO_SYNC
1768 PPCODE:
1769{
1770 dREQ;
1771
1772 req->type = ix;
1773
1774 REQ_SEND;
1775}
1776
1619int 1777int
1620aioreq_pri (int pri = 0) 1778aioreq_pri (int pri = NO_INIT)
1621 PROTOTYPE: ;$
1622 CODE: 1779 CODE:
1623 RETVAL = next_pri - PRI_BIAS; 1780 RETVAL = next_pri;
1624 if (items > 0) 1781 if (items > 0)
1625 { 1782 {
1626 if (pri < PRI_MIN) pri = PRI_MIN; 1783 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1627 if (pri > PRI_MAX) pri = PRI_MAX; 1784 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1628 next_pri = pri + PRI_BIAS; 1785 next_pri = pri;
1629 } 1786 }
1630 OUTPUT: 1787 OUTPUT:
1631 RETVAL 1788 RETVAL
1632 1789
1633void 1790void
1634aioreq_nice (int nice = 0) 1791aioreq_nice (int nice = 0)
1635 CODE: 1792 CODE:
1636 nice = next_pri - nice; 1793 nice = next_pri - nice;
1637 if (nice < PRI_MIN) nice = PRI_MIN; 1794 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1638 if (nice > PRI_MAX) nice = PRI_MAX; 1795 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1639 next_pri = nice + PRI_BIAS; 1796 next_pri = nice;
1640 1797
1641void 1798void
1642flush () 1799flush ()
1643 PROTOTYPE:
1644 CODE: 1800 CODE:
1645 while (nreqs) 1801 while (eio_nreqs ())
1646 { 1802 {
1647 poll_wait (); 1803 poll_wait ();
1648 poll_cb (); 1804 poll_cb ();
1649 } 1805 }
1650 1806
1651int 1807int
1652poll() 1808poll ()
1653 PROTOTYPE:
1654 CODE: 1809 CODE:
1655 poll_wait (); 1810 poll_wait ();
1656 RETVAL = poll_cb (); 1811 RETVAL = poll_cb ();
1657 OUTPUT: 1812 OUTPUT:
1658 RETVAL 1813 RETVAL
1659 1814
1660int 1815int
1661poll_fileno() 1816poll_fileno ()
1662 PROTOTYPE:
1663 CODE: 1817 CODE:
1664 RETVAL = respipe [0]; 1818 RETVAL = s_epipe_fd (&respipe);
1665 OUTPUT: 1819 OUTPUT:
1666 RETVAL 1820 RETVAL
1667 1821
1668int 1822int
1669poll_cb(...) 1823poll_cb (...)
1670 PROTOTYPE: 1824 PROTOTYPE:
1671 CODE: 1825 CODE:
1672 RETVAL = poll_cb (); 1826 RETVAL = poll_cb ();
1673 OUTPUT: 1827 OUTPUT:
1674 RETVAL 1828 RETVAL
1675 1829
1676void 1830void
1677poll_wait() 1831poll_wait ()
1678 PROTOTYPE:
1679 CODE: 1832 CODE:
1680 poll_wait (); 1833 poll_wait ();
1681 1834
1682int 1835int
1683nreqs() 1836nreqs ()
1684 PROTOTYPE:
1685 CODE: 1837 CODE:
1686 RETVAL = nreqs; 1838 RETVAL = eio_nreqs ();
1687 OUTPUT: 1839 OUTPUT:
1688 RETVAL 1840 RETVAL
1689 1841
1690int 1842int
1691nready() 1843nready ()
1692 PROTOTYPE:
1693 CODE: 1844 CODE:
1694 RETVAL = get_nready (); 1845 RETVAL = eio_nready ();
1695 OUTPUT: 1846 OUTPUT:
1696 RETVAL 1847 RETVAL
1697 1848
1698int 1849int
1699npending() 1850npending ()
1700 PROTOTYPE:
1701 CODE: 1851 CODE:
1702 RETVAL = get_npending (); 1852 RETVAL = eio_npending ();
1703 OUTPUT: 1853 OUTPUT:
1704 RETVAL 1854 RETVAL
1705 1855
1706int 1856int
1707nthreads() 1857nthreads ()
1708 PROTOTYPE:
1709 CODE: 1858 CODE:
1710 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1859 RETVAL = eio_nthreads ();
1711 RETVAL = started;
1712 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1713 OUTPUT: 1860 OUTPUT:
1714 RETVAL 1861 RETVAL
1715 1862
1863int
1864fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1865 CODE:
1866 RETVAL = posix_fadvise (fh, offset, length, advice);
1867 OUTPUT:
1868 RETVAL
1869
1870IV
1871sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1872 CODE:
1873 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1874 OUTPUT:
1875 RETVAL
1876
1877void
1878mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1879 PPCODE:
1880 sv_unmagic (scalar, MMAP_MAGIC);
1881{
1882 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1883 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1884 if (addr == (void *)-1)
1885 XSRETURN_NO;
1886
1887 sv_force_normal (scalar);
1888
1889 /* we store the length in mg_obj, as namlen is I32 :/ */
1890 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1891 ->mg_obj = (SV *)length;
1892
1893 SvUPGRADE (scalar, SVt_PV); /* nop... */
1894
1895 if (!(prot & PROT_WRITE))
1896 SvREADONLY_on (scalar);
1897
1898 if (SvLEN (scalar))
1899 Safefree (SvPVX (scalar));
1900
1901 SvPVX (scalar) = (char *)addr;
1902 SvCUR_set (scalar, length);
1903 SvLEN_set (scalar, 0);
1904 SvPOK_only (scalar);
1905
1906 XSRETURN_YES;
1907}
1908
1909void
1910munmap (SV *scalar)
1911 CODE:
1912 sv_unmagic (scalar, MMAP_MAGIC);
1913
1914int
1915madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1916 ALIAS:
1917 mprotect = 1
1918 CODE:
1919{
1920 STRLEN svlen;
1921 void *addr = SvPVbyte (scalar, svlen);
1922 STRLEN len = SvUV (length);
1923
1924 if (offset < 0)
1925 offset += svlen;
1926
1927 if (offset < 0 || offset > svlen)
1928 croak ("offset outside of scalar");
1929
1930 if (!SvOK (length) || len + offset > svlen)
1931 len = svlen - offset;
1932
1933 addr = (void *)(((intptr_t)addr) + offset);
1934 eio_page_align (&addr, &len);
1935
1936 switch (ix)
1937 {
1938 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1939 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1940 }
1941}
1942 OUTPUT:
1943 RETVAL
1944
1945int
1946munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1947 CODE:
1948{
1949 STRLEN svlen;
1950 void *addr = SvPVbyte (scalar, svlen);
1951 size_t len = SvUV (length);
1952
1953 if (offset < 0)
1954 offset += svlen;
1955
1956 if (offset < 0 || offset > svlen)
1957 croak ("offset outside of scalar");
1958
1959 if (!SvOK (length) || len + offset > svlen)
1960 len = svlen - offset;
1961
1962 addr = (void *)(((intptr_t)addr) + offset);
1963 eio_page_align (&addr, &len);
1964#if _POSIX_MEMLOCK_RANGE
1965 RETVAL = munlock (addr, len);
1966#else
1967 RETVAL = EIO_ENOSYS ();
1968#endif
1969}
1970 OUTPUT:
1971 RETVAL
1972
1973int
1974munlockall ()
1975 CODE:
1976#if _POSIX_MEMLOCK
1977 munlockall ();
1978#else
1979 RETVAL = EIO_ENOSYS ();
1980#endif
1981 OUTPUT:
1982 RETVAL
1983
1984int
1985splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1986 CODE:
1987{
1988#if HAVE_LINUX_SPLICE
1989 loff_t off_in_, off_out_;
1990 RETVAL = splice (
1991 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1992 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1993 length, flags
1994 );
1995#else
1996 RETVAL = EIO_ENOSYS ();
1997#endif
1998}
1999 OUTPUT:
2000 RETVAL
2001
2002int
2003tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2004 CODE:
2005#if HAVE_LINUX_SPLICE
2006 RETVAL = tee (rfh, wfh, length, flags);
2007#else
2008 RETVAL = EIO_ENOSYS ();
2009#endif
2010 OUTPUT:
2011 RETVAL
2012
2013int
2014pipesize (aio_rfd rfh, int new_size = -1)
2015 PROTOTYPE: $;$
2016 CODE:
2017#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2018 if (new_size >= 0)
2019 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2020 else
2021 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2022#else
2023 errno = ENOSYS;
2024 RETVAL = -1;
2025#endif
2026 OUTPUT:
2027 RETVAL
2028
2029void
2030pipe2 (int flags = 0)
2031 PROTOTYPE: ;$
2032 PPCODE:
2033{
2034 int fd[2];
2035 int res;
2036
2037 if (flags)
2038#if HAVE_PIPE2
2039 res = pipe2 (fd, flags);
2040#else
2041 res = (errno = ENOSYS, -1);
2042#endif
2043 else
2044 res = pipe (fd);
2045
2046 if (!res)
2047 {
2048 EXTEND (SP, 2);
2049 PUSHs (newmortalFH (fd[0], O_RDONLY));
2050 PUSHs (newmortalFH (fd[1], O_WRONLY));
2051 }
2052}
2053
2054void _on_next_submit (SV *cb)
2055 CODE:
2056 SvREFCNT_dec (on_next_submit);
2057 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2058
1716PROTOTYPES: DISABLE 2059PROTOTYPES: DISABLE
2060
2061MODULE = IO::AIO PACKAGE = IO::AIO::WD
2062
2063BOOT:
2064{
2065 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2066 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2067}
2068
2069void
2070DESTROY (SV *self)
2071 CODE:
2072{
2073 aio_wd wd = SvAIO_WD (self);
2074#if HAVE_AT
2075 {
2076 SV *callback = &PL_sv_undef;
2077 dREQ; /* clobbers next_pri :/ */
2078 next_pri = req->pri; /* restore next_pri */
2079 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2080 req->type = EIO_WD_CLOSE;
2081 req->wd = wd;
2082 REQ_SEND;
2083 }
2084#else
2085 eio_wd_close_sync (wd);
2086#endif
2087}
1717 2088
1718MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2089MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1719 2090
1720void 2091void
1721cancel (aio_req_ornot req) 2092cancel (aio_req_ornot req)
1722 CODE: 2093 CODE:
1723 req_cancel (req); 2094 eio_cancel (req);
1724 2095
1725void 2096void
1726cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2097cb (aio_req_ornot req, SV *callback = NO_INIT)
1727 CODE: 2098 PPCODE:
2099{
2100 if (GIMME_V != G_VOID)
2101 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2102
2103 if (items > 1)
2104 {
2105 SV *cb_cv = get_cb (callback);
2106
1728 SvREFCNT_dec (req->callback); 2107 SvREFCNT_dec (req->callback);
1729 req->callback = newSVsv (callback); 2108 req->callback = SvREFCNT_inc (cb_cv);
2109 }
2110}
1730 2111
1731MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2112MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1732 2113
1733void 2114void
1734add (aio_req grp, ...) 2115add (aio_req grp, ...)
1735 PPCODE: 2116 PPCODE:
1736{ 2117{
1737 int i; 2118 int i;
1738 aio_req req;
1739 2119
1740 if (grp->int1 == 2) 2120 if (grp->int1 == 2)
1741 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2121 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742 2122
1743 for (i = 1; i < items; ++i ) 2123 for (i = 1; i < items; ++i )
1744 { 2124 {
2125 aio_req req;
2126
1745 if (GIMME_V != G_VOID) 2127 if (GIMME_V != G_VOID)
1746 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2128 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1747 2129
1748 req = SvAIO_REQ (ST (i)); 2130 req = SvAIO_REQ (ST (i));
1749 2131
1750 if (req) 2132 if (req)
1751 { 2133 eio_grp_add (grp, req);
1752 ++grp->size;
1753 req->grp = grp;
1754
1755 req->grp_prev = 0;
1756 req->grp_next = grp->grp_first;
1757
1758 if (grp->grp_first)
1759 grp->grp_first->grp_prev = req;
1760
1761 grp->grp_first = req;
1762 }
1763 } 2134 }
1764} 2135}
1765 2136
1766void 2137void
1767cancel_subs (aio_req_ornot req) 2138cancel_subs (aio_req_ornot req)
… …
1776 AV *av; 2147 AV *av;
1777 2148
1778 grp->errorno = errno; 2149 grp->errorno = errno;
1779 2150
1780 av = newAV (); 2151 av = newAV ();
2152 av_extend (av, items - 1);
1781 2153
1782 for (i = 1; i < items; ++i ) 2154 for (i = 1; i < items; ++i )
1783 av_push (av, newSVsv (ST (i))); 2155 av_push (av, newSVsv (ST (i)));
1784 2156
1785 SvREFCNT_dec (grp->sv1); 2157 SvREFCNT_dec (grp->sv1);
… …
1792 grp->errorno = errorno; 2164 grp->errorno = errorno;
1793 2165
1794void 2166void
1795limit (aio_req grp, int limit) 2167limit (aio_req grp, int limit)
1796 CODE: 2168 CODE:
1797 grp->int2 = limit; 2169 eio_grp_limit (grp, limit);
1798 aio_grp_feed (grp);
1799 2170
1800void 2171void
1801feed (aio_req grp, SV *callback=&PL_sv_undef) 2172feed (aio_req grp, SV *callback = &PL_sv_undef)
1802 CODE: 2173 CODE:
1803{ 2174{
1804 SvREFCNT_dec (grp->sv2); 2175 SvREFCNT_dec (grp->sv2);
1805 grp->sv2 = newSVsv (callback); 2176 grp->sv2 = newSVsv (callback);
2177 grp->feed = aio_grp_feed;
1806 2178
1807 if (grp->int2 <= 0) 2179 if (grp->int2 <= 0)
1808 grp->int2 = 2; 2180 grp->int2 = 2;
1809 2181
1810 aio_grp_feed (grp); 2182 eio_grp_limit (grp, grp->int2);
1811} 2183}
1812 2184

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