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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 1.237 by root, Thu Jun 25 18:08:47 2015 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. on't complain if this fails for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
46#ifdef _WIN32
47
48 // perl overrides all those nice libc functions
49
50 #undef malloc
51 #undef free
52 #undef open
53 #undef read
54 #undef write
55 #undef send
56 #undef recv
57 #undef stat
58 #undef lstat
59 #undef fstat
60 #undef truncate
61 #undef ftruncate
62 #undef open
63 #undef link
64 #undef close
65 #undef unlink
66 #undef mkdir
67 #undef rmdir
68 #undef rename
69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
79
80 #define EIO_STRUCT_STAT struct _stati64
81 #define EIO_STRUCT_STATI64
82
83#else
84
40# include <sys/socket.h> 85 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 86 #include <sys/select.h>
87 #include <unistd.h>
88 #include <utime.h>
89 #include <signal.h>
90
91 #define EIO_STRUCT_STAT Stat_t
92
93#endif
94
95/*****************************************************************************/
96
97#if __GNUC__ >= 3
98# define expect(expr,value) __builtin_expect ((expr),(value))
99#else
100# define expect(expr,value) (expr)
101#endif
102
103#define expect_false(expr) expect ((expr) != 0, 0)
104#define expect_true(expr) expect ((expr) != 0, 1)
105
106/*****************************************************************************/
107
108typedef SV SV8; /* byte-sv, used for argument-checking */
109typedef int aio_rfd; /* read file desriptor */
110typedef int aio_wfd; /* write file descriptor */
111
112static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
113
114#define EIO_REQ_MEMBERS \
115 SV *callback; \
116 SV *sv1, *sv2; \
117 SV *sv3, *sv4; \
118 STRLEN stroffset; \
119 SV *self;
120
121#define EIO_NO_WRAPPERS 1
122
123#include "libeio/config.h"
124#include "libeio/eio.h"
125
126static int req_invoke (eio_req *req);
127#define EIO_FINISH(req) req_invoke (req)
128static void req_destroy (eio_req *grp);
129#define EIO_DESTROY(req) req_destroy (req)
130
131#include "libeio/eio.c"
132
133#if !HAVE_POSIX_FADVISE
134# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#if !HAVE_POSIX_MADVISE
138# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
139#endif
140
141#ifndef MAP_ANONYMOUS
142# ifdef MAP_ANON
143# define MAP_ANONYMOUS MAP_ANON
43# else 144# else
44# error sendfile support requested but not available 145# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 146# endif
46#endif 147#endif
47 148
48/* number of seconds after which idle threads exit */ 149/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 150/* also provides const_iv_ and const_niv_ macros for them */
151#include "def0.h"
50 152
51/* used for struct dirent, AIX doesn't provide it */ 153#ifndef makedev
52#ifndef NAME_MAX 154# 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 155#endif
156#ifndef major
157# define major(dev) ((dev) >> 8)
79#endif 158#endif
159#ifndef minor
160# define minor(dev) ((dev) & 0xff)
161#endif
80 162
81/* buffer size for various temporary buffers */ 163#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 164# define PAGESIZE sysconf (_SC_PAGESIZE)
165#endif
83 166
84#define dBUF \ 167/*****************************************************************************/
85 char *aio_buf; \ 168
86 LOCK (wrklock); \ 169static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 170fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 171{
89 if (!aio_buf) \ 172 req->result = -1;
173
174#if HAVE_FIEMAP
175 /* assume some c99 */
176 struct fiemap *fiemap = 0;
177 size_t end_offset;
178 int count = req->int3;
179
180 req->flags |= EIO_FLAG_PTR1_FREE;
181
182 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
183 /* increase in 3.5kb steps */
184 if (count < 0)
185 count = 8;
186
187 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
188 errno = ENOMEM;
189 if (!fiemap)
90 return -1; 190 return;
91 191
92typedef SV SV8; /* byte-sv, used for argument-checking */ 192 req->ptr1 = fiemap;
93 193
94enum { 194 fiemap->fm_start = req->offs;
95 REQ_QUIT, 195 fiemap->fm_length = req->size;
96 REQ_OPEN, REQ_CLOSE, 196 fiemap->fm_flags = req->int2;
97 REQ_READ, REQ_WRITE, REQ_READAHEAD, 197 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};
107 198
108#define AIO_REQ_KLASS "IO::AIO::REQ" 199 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
109#define AIO_GRP_KLASS "IO::AIO::GRP" 200 return;
110 201
111typedef struct aio_cb 202 if (req->int3 >= 0 /* not autosizing */
112{ 203 || !fiemap->fm_mapped_extents /* no more extents */
113 struct aio_cb *volatile next; 204 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
205 goto done;
114 206
115 SV *callback, *fh; 207 /* else we have to loop -
116 SV *sv1, *sv2; 208 * it would be tempting (actually I tried that first) to just query the
117 void *ptr1, *ptr2; 209 * number of extents needed, but linux often feels like not returning all
118 off_t offs; 210 * extents, without telling us it left any out. this complicates
119 size_t size; 211 * this quite a bit.
120 ssize_t result; 212 */
121 213
122 STRLEN stroffset; 214 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 */
127 215
128 unsigned char flags; 216 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 { 217 {
199 closedir (wrk->dirp); 218 /* 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; 219 char scratch[3072];
201 } 220 struct fiemap *incmap = (struct fiemap *)scratch;
202 221
203 if (wrk->dbuf) 222 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 223 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 224 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 225 incmap->fm_flags = fiemap->fm_flags;
207 } 226 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 227
210static void worker_free (worker *wrk) 228 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; 229 return;
305 230
306 --q->size; 231 if (!incmap->fm_mapped_extents)
232 goto done;
307 233
308 for (pri = NUM_PRI; pri--; ) 234 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
309 { 235 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
310 aio_req req = q->qs[pri]; 236 errno = ENOMEM;
311
312 if (req) 237 if (!fiemap)
238 return;
239
240 req->ptr1 = fiemap;
241
242 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 243 {
314 if (!(q->qs[pri] = req->next)) 244 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 245
317 return req; 246 if (e->fe_logical + e->fe_length >= end_offset)
247 goto done;
248
249 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
250
251 if (e->fe_flags & FIEMAP_EXTENT_LAST)
252 goto done;
253
318 } 254 }
319 } 255 }
320 256
321 abort (); 257done:
322} 258 req->result = 0;
323 259
324static int poll_cb (); 260#else
325static void req_invoke (aio_req req); 261 errno = ENOSYS;
262#endif
263}
264
265/*****************************************************************************/
266
267enum {
268 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
269};
270
271typedef eio_req *aio_req;
272typedef eio_req *aio_req_ornot;
273typedef eio_wd aio_wd;
274
275static SV *on_next_submit;
276static int next_pri = EIO_PRI_DEFAULT;
277static int max_outstanding;
278
279static s_epipe respipe;
280
326static void req_free (aio_req req); 281static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 282static void req_cancel (aio_req req);
328 283
284static void
285want_poll (void)
286{
287 /* write a dummy byte to the pipe so fh becomes ready */
288 s_epipe_signal (&respipe);
289}
290
291static void
292done_poll (void)
293{
294 /* read any signals sent by the worker threads */
295 s_epipe_drain (&respipe);
296}
297
329/* must be called at most once */ 298/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 299static SV *
300req_sv (aio_req req, HV *stash)
331{ 301{
332 if (!req->self) 302 if (!req->self)
333 { 303 {
334 req->self = (SV *)newHV (); 304 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 305 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 306 }
337 307
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 308 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 309}
340 310
341static aio_req SvAIO_REQ (SV *sv) 311static SV *
312newSVaio_wd (aio_wd wd)
313{
314 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
315}
316
317static aio_req
318SvAIO_REQ (SV *sv)
342{ 319{
343 MAGIC *mg; 320 MAGIC *mg;
344 321
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 322 if (!SvROK (sv)
323 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
324 || (SvSTASH (SvRV (sv)) != aio_grp_stash
325 && SvSTASH (SvRV (sv)) != aio_req_stash
326 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 327 croak ("object of class IO::AIO::REQ expected");
347 328
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 329 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 330
350 return mg ? (aio_req)mg->mg_ptr : 0; 331 return mg ? (aio_req)mg->mg_ptr : 0;
351} 332}
352 333
334static aio_wd
335SvAIO_WD (SV *sv)
336{
337 if (!SvROK (sv)
338 || SvTYPE (SvRV (sv)) != SVt_PVMG
339 || SvSTASH (SvRV (sv)) != aio_wd_stash)
340 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
341
342 return (aio_wd)(long)SvIVX (SvRV (sv));
343}
344
345static SV *
346newmortalFH (int fd, int flags)
347{
348 if (fd < 0)
349 return &PL_sv_undef;
350
351 GV *gv = (GV *)sv_newmortal ();
352 char sym[64];
353 int symlen;
354
355 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
356 gv_init (gv, aio_stash, sym, symlen, 0);
357
358 symlen = snprintf (
359 sym,
360 sizeof (sym),
361 "%s&=%d",
362 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
363 fd
364 );
365
366 return do_open (gv, sym, symlen, 0, 0, 0, 0)
367 ? (SV *)gv : &PL_sv_undef;
368}
369
370static void
353static void aio_grp_feed (aio_req grp) 371aio_grp_feed (aio_req grp)
354{ 372{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 373 if (grp->sv2 && SvOK (grp->sv2))
356 { 374 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 375 dSP;
362 376
363 ENTER; 377 ENTER;
364 SAVETMPS; 378 SAVETMPS;
365 PUSHMARK (SP); 379 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 380 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 381 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 382 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 383 SPAGAIN;
370 FREETMPS; 384 FREETMPS;
371 LEAVE; 385 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 } 386 }
382} 387}
383 388
384static void aio_grp_dec (aio_req grp) 389static void
390req_submit (eio_req *req)
385{ 391{
386 --grp->size; 392 eio_submit (req);
387 393
388 /* call feeder, if applicable */ 394 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 395 {
394 req_invoke (grp); 396 dSP;
395 req_free (grp); 397 SV *cb = sv_2mortal (on_next_submit);
398
399 on_next_submit = 0;
400
401 PUSHMARK (SP);
402 PUTBACK;
403 call_sv (cb, G_DISCARD | G_EVAL);
396 } 404 }
397} 405}
398 406
407static int
399static void req_invoke (aio_req req) 408req_invoke (eio_req *req)
400{ 409{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 410 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 411 SvREADONLY_off (req->sv2);
405 412
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 413 if (!EIO_CANCELLED (req) && req->callback)
407 { 414 {
415 dSP;
416 static SV *sv_result_cache; /* caches the result integer SV */
417 SV *sv_result;
418
408 ENTER; 419 ENTER;
409 SAVETMPS; 420 SAVETMPS;
410 PUSHMARK (SP); 421 PUSHMARK (SP);
411 EXTEND (SP, 1); 422 EXTEND (SP, 1);
412 423
424 /* do not recreate the result IV from scratch each time */
425 if (expect_true (sv_result_cache))
426 {
427 sv_result = sv_result_cache; sv_result_cache = 0;
428 SvIV_set (sv_result, req->result);
429 SvIOK_only (sv_result);
430 }
431 else
432 {
433 sv_result = newSViv (req->result);
434 SvREADONLY_on (sv_result);
435 }
436
413 switch (req->type) 437 switch (req->type)
414 { 438 {
439 case EIO_WD_OPEN:
440 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
441 break;
442
415 case REQ_READDIR: 443 case EIO_READDIR:
416 { 444 {
417 SV *rv = &PL_sv_undef; 445 SV *rv = &PL_sv_undef;
418 446
419 if (req->result >= 0) 447 if (req->result >= 0)
420 { 448 {
421 int i; 449 int i;
422 char *buf = req->ptr2; 450 char *names = (char *)req->ptr2;
451 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 452 AV *av = newAV ();
424 453
425 av_extend (av, req->result - 1); 454 av_extend (av, req->result - 1);
426 455
427 for (i = 0; i < req->result; ++i) 456 for (i = 0; i < req->result; ++i)
428 { 457 {
429 SV *sv = newSVpv (buf, 0); 458 if (req->int1 & EIO_READDIR_DENTS)
459 {
460 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 461
462 if (req->int1 & EIO_READDIR_CUSTOM2)
463 {
464 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
465 AV *avent = newAV ();
466
467 av_extend (avent, 2);
468
469 if (!sv_type [ent->type])
470 {
471 sv_type [ent->type] = newSViv (ent->type);
472 SvREADONLY_on (sv_type [ent->type]);
473 }
474
475 av_store (avent, 0, namesv);
476 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
477 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
478
479 av_store (av, i, newRV_noinc ((SV *)avent));
480 }
481 else
431 av_store (av, i, sv); 482 av_store (av, i, namesv);
483
484 ++ent;
485 }
486 else
487 {
488 SV *name = newSVpv (names, 0);
489 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 490 names += SvCUR (name) + 1;
491 }
433 } 492 }
434 493
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 494 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 495 }
437 496
438 PUSHs (rv); 497 PUSHs (rv);
498
499 if (req->int1 & EIO_READDIR_CUSTOM1)
500 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 501 }
440 break; 502 break;
441 503
442 case REQ_OPEN: 504 case EIO_OPEN:
505 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
506 break;
507
508 case EIO_STATVFS:
509 case EIO_FSTATVFS:
443 { 510 {
444 /* convert fd to fh */ 511 SV *rv = &PL_sv_undef;
445 SV *fh; 512
513#ifndef _WIN32
514 if (req->result >= 0)
515 {
516 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
517 HV *hv = newHV ();
518 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
519 * chooses to make it a struct.
520 */
521 unsigned long fsid = 0;
522 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
446 523
447 PUSHs (sv_2mortal (newSViv (req->result))); 524 rv = sv_2mortal (newRV_noinc ((SV *)hv));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451 525
452 fh = POPs; 526 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
453 PUSHMARK (SP); 527 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
528 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
529 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
530 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
531 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
532 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
533 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
534 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
535 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
536 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
537 }
538#endif
539
454 XPUSHs (fh); 540 PUSHs (rv);
455 } 541 }
542
456 break; 543 break;
457 544
458 case REQ_GROUP: 545 case EIO_GROUP:
459 req->int1 = 2; /* mark group as finished */ 546 req->int1 = 2; /* mark group as finished */
460 547
461 if (req->sv1) 548 if (req->sv1)
462 { 549 {
463 int i; 550 int i;
… …
467 for (i = 0; i <= AvFILL (av); ++i) 554 for (i = 0; i <= AvFILL (av); ++i)
468 PUSHs (*av_fetch (av, i, 0)); 555 PUSHs (*av_fetch (av, i, 0));
469 } 556 }
470 break; 557 break;
471 558
472 case REQ_NOP: 559 case EIO_NOP:
473 case REQ_BUSY: 560 case EIO_BUSY:
474 break; 561 break;
475 562
476 case REQ_READLINK: 563 case EIO_READLINK:
564 case EIO_REALPATH:
477 if (req->result > 0) 565 if (req->result > 0)
566 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
567 break;
568
569 case EIO_STAT:
570 case EIO_LSTAT:
571 case EIO_FSTAT:
572 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
573
574 if (!(PL_laststatval = req->result))
575 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
576 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
577
578 PUSHs (sv_result);
579 break;
580
581 case EIO_SEEK:
582 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
583 break;
584
585 case EIO_READ:
586 {
587 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
588 *SvEND (req->sv2) = 0;
589 SvPOK_only (req->sv2);
590 SvSETMAGIC (req->sv2);
591 PUSHs (sv_result);
592 }
593 break;
594
595 case EIO_CUSTOM:
596 if (req->feed == fiemap)
478 { 597 {
479 SvCUR_set (req->sv1, req->result); 598#if HAVE_FIEMAP
480 *SvEND (req->sv1) = 0;
481 PUSHs (req->sv1); 599 if (!req->result)
600 {
601 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
602
603 if (fiemap->fm_extent_count)
604 {
605 AV *av = newAV ();
606 int i;
607
608 while (fiemap->fm_mapped_extents)
609 {
610 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
611 AV *ext_av = newAV ();
612
613 av_store (ext_av, 3, newSVuv (extent->fe_flags));
614 av_store (ext_av, 2, newSVval64 (extent->fe_length));
615 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
616 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
617
618 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
619 }
620
621 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
622 }
623 else
624 {
625 SvIV_set (sv_result, fiemap->fm_mapped_extents);
626 PUSHs (sv_result);
627 }
628 }
629#endif
482 } 630 }
631 else
632 PUSHs (sv_result);
483 break; 633 break;
484 634
485 case REQ_STAT: 635 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
486 case REQ_LSTAT: 636 if (req->result > 0)
487 case REQ_FSTAT: 637 SvIV_set (sv_result, 0);
488 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 638 /* 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;
499 639
500 default: 640 default:
501 PUSHs (sv_2mortal (newSViv (req->result))); 641 PUSHs (sv_result);
502 break; 642 break;
503 } 643 }
504 644
505 errno = req->errorno; 645 errno = req->errorno;
506 646
507 PUTBACK; 647 PUTBACK;
508 call_sv (req->callback, G_VOID | G_EVAL); 648 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509 SPAGAIN; 649 SPAGAIN;
650
651 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
652 SvREFCNT_dec (sv_result);
653 else
654 sv_result_cache = sv_result;
510 655
511 FREETMPS; 656 FREETMPS;
512 LEAVE; 657 LEAVE;
658
659 PUTBACK;
513 } 660 }
514 661
515 if (req->grp) 662 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} 663}
535 664
536static void req_free (aio_req req) 665static void
666req_destroy (aio_req req)
537{ 667{
538 if (req->self) 668 if (req->self)
539 { 669 {
540 sv_unmagic (req->self, PERL_MAGIC_ext); 670 sv_unmagic (req->self, PERL_MAGIC_ext);
541 SvREFCNT_dec (req->self); 671 SvREFCNT_dec (req->self);
542 } 672 }
543 673
544 SvREFCNT_dec (req->fh);
545 SvREFCNT_dec (req->sv1); 674 SvREFCNT_dec (req->sv1);
546 SvREFCNT_dec (req->sv2); 675 SvREFCNT_dec (req->sv2);
676 SvREFCNT_dec (req->sv3);
677 SvREFCNT_dec (req->sv4);
547 SvREFCNT_dec (req->callback); 678 SvREFCNT_dec (req->callback);
548 679
549 if (req->flags & FLAG_PTR2_FREE)
550 free (req->ptr2);
551
552 Safefree (req); 680 free (req);
553} 681}
554 682
683static void
555static void req_cancel_subs (aio_req grp) 684req_cancel_subs (aio_req grp)
556{ 685{
557 aio_req sub;
558
559 if (grp->type != REQ_GROUP) 686 if (grp->type != EIO_GROUP)
560 return; 687 return;
561 688
562 SvREFCNT_dec (grp->sv2); 689 SvREFCNT_dec (grp->sv2);
563 grp->sv2 = 0; 690 grp->sv2 = 0;
564 691
565 for (sub = grp->grp_first; sub; sub = sub->grp_next) 692 eio_grp_cancel (grp);
566 req_cancel (sub);
567} 693}
568 694
569static void req_cancel (aio_req req) 695static void ecb_cold
696create_respipe (void)
570{ 697{
571 req->flags |= FLAG_CANCELLED; 698 if (s_epipe_renew (&respipe))
572 699 croak ("IO::AIO: unable to initialize result pipe");
573 req_cancel_subs (req);
574} 700}
575 701
576static void *aio_proc(void *arg); 702static void
577 703poll_wait (void)
578static void start_thread (void)
579{ 704{
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) 705 while (eio_nreqs ())
686 { 706 {
687 int size; 707 int size;
688 if (WORDACCESS_UNSAFE) LOCK (reslock); 708
709 X_LOCK (EIO_POOL->reslock);
689 size = res_queue.size; 710 size = EIO_POOL->res_queue.size;
690 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 711 X_UNLOCK (EIO_POOL->reslock);
691 712
692 if (size) 713 if (size)
693 return; 714 return;
694 715
695 maybe_start_thread (); 716 etp_maybe_start_thread (EIO_POOL);
696 717
697 FD_ZERO(&rfd); 718 s_epipe_wait (&respipe);
698 FD_SET(respipe [0], &rfd);
699
700 select (respipe [0] + 1, &rfd, 0, 0, 0);
701 } 719 }
702} 720}
703 721
704static int poll_cb () 722static int
723poll_cb (void)
705{ 724{
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 (;;) 725 for (;;)
717 { 726 {
718 for (;;) 727 int res = eio_poll ();
728
729 if (res > 0)
730 croak (0);
731
732 if (!max_outstanding || max_outstanding > eio_nreqs ())
733 return res;
734
735 poll_wait ();
736 }
737}
738
739static void ecb_cold
740reinit (void)
741{
742 create_respipe ();
743
744 if (eio_init (want_poll, done_poll) < 0)
745 croak ("IO::AIO: unable to initialise eio library");
746}
747
748/*****************************************************************************/
749
750#if !_POSIX_MAPPED_FILES
751# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
752# define munmap(addr,length) EIO_ENOSYS ()
753#endif
754
755#if !_POSIX_MEMORY_PROTECTION
756# define mprotect(addr,len,prot) EIO_ENOSYS ()
757#endif
758
759#define MMAP_MAGIC PERL_MAGIC_ext
760
761static int ecb_cold
762mmap_free (pTHX_ SV *sv, MAGIC *mg)
763{
764 int old_errno = errno;
765 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
766 errno = old_errno;
767
768 mg->mg_obj = 0; /* just in case */
769
770 SvREADONLY_off (sv);
771
772 if (SvPVX (sv) != mg->mg_ptr)
773 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
774
775 SvCUR_set (sv, 0);
776 SvPVX (sv) = 0;
777 SvOK_off (sv);
778
779 return 0;
780}
781
782static MGVTBL mmap_vtbl = {
783 0, 0, 0, 0, mmap_free
784};
785
786/*****************************************************************************/
787
788static SV *
789get_cb (SV *cb_sv)
790{
791 SvGETMAGIC (cb_sv);
792 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
793}
794
795static aio_req ecb_noinline
796dreq (SV *callback)
797{
798 SV *cb_cv;
799 aio_req req;
800 int req_pri = next_pri;
801 next_pri = EIO_PRI_DEFAULT;
802
803 cb_cv = get_cb (callback);
804
805 req = calloc (sizeof (*req), 1);
806 if (!req)
807 croak ("out of memory during eio_req allocation");
808
809 req->callback = SvREFCNT_inc (cb_cv);
810 req->pri = req_pri;
811
812 return req;
813}
814
815#define dREQ \
816 aio_req req = dreq (callback); \
817
818#define REQ_SEND \
819 PUTBACK; \
820 req_submit (req); \
821 SPAGAIN; \
822 \
823 if (GIMME_V != G_VOID) \
824 XPUSHs (req_sv (req, aio_req_stash));
825
826ecb_inline void
827req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
828{
829 if (expect_false (SvROK (path)))
830 {
831 SV *rv = SvRV (path);
832 SV *wdob;
833
834 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
719 { 835 {
720 maybe_start_thread (); 836 path = AvARRAY (rv)[1];
837 wdob = AvARRAY (rv)[0];
721 838
722 LOCK (reslock); 839 if (SvOK (wdob))
723 req = reqq_shift (&res_queue);
724
725 if (req)
726 { 840 {
727 --npending; 841 *wd = SvAIO_WD (wdob);
728 842 *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 } 843 }
750 else 844 else
751 { 845 *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 } 846 }
847 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
848 {
849 *wd = (aio_wd)(long)SvIVX (rv);
850 *wdsv = SvREFCNT_inc_NN (rv);
851 *ptr = ".";
852 return; /* path set to "." */
853 }
854 else
855 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
856 }
770 857
771 if (nreqs <= max_outstanding) 858 *pathsv = newSVsv (path);
859 *ptr = SvPVbyte_nolen (*pathsv);
860}
861
862static void ecb_noinline
863req_set_path1 (aio_req req, SV *path)
864{
865 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
866}
867
868static void ecb_noinline
869req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
870{
871 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
872
873 switch (SvTYPE (rv))
874 {
875 case SVt_PVIO:
876 case SVt_PVLV:
877 case SVt_PVGV:
878 req->type = type_fh;
879 req->sv1 = newSVsv (fh_or_path);
880 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
772 break; 881 break;
773 882
774 poll_wait (); 883 default:
775 884 req->type = type_path;
776 ++maxreqs; 885 req_set_path1 (req, fh_or_path);
886 break;
777 } 887 }
778
779 return count;
780} 888}
781 889
782static void create_pipe () 890XS(boot_IO__AIO) ecb_cold;
783{
784 if (pipe (respipe))
785 croak ("unable to initialize result pipe");
786 891
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 892MODULE = IO::AIO PACKAGE = IO::AIO
1260 893
1261PROTOTYPES: ENABLE 894PROTOTYPES: ENABLE
1262 895
1263BOOT: 896BOOT:
1264{ 897{
898 static const struct {
899 const char *name;
900 IV iv;
901 } *civ, const_iv[] = {
902# define const_niv(name, value) { # name, (IV) value },
903# define const_iv(name) { # name, (IV) name },
904# define const_eio(name) { # name, (IV) EIO_ ## name },
905
906 /* you have to re-run ./gendef0 after adding/removing any constants here */
907 /* the first block can be undef if missing */
908 const_iv (ENOSYS)
909 const_iv (EXDEV)
910 const_iv (EBADR)
911
912 /* for lseek */
913 const_iv (SEEK_DATA)
914 const_iv (SEEK_HOLE)
915
916 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
917 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
918 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
919 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
920 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
921 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
922
923 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
924 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
925 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
926 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
927 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
928
929 /* the second block will be 0 when missing */
930 const_iv (O_RDONLY)
931 const_iv (O_WRONLY)
932 const_iv (O_RDWR)
933 const_iv (O_CREAT)
934 const_iv (O_TRUNC)
935 const_iv (O_EXCL)
936 const_iv (O_APPEND)
937
938 const_iv (O_ASYNC)
939 const_iv (O_DIRECT)
940 const_iv (O_NOATIME)
941
942 const_iv (O_CLOEXEC)
943 const_iv (O_NOCTTY)
944 const_iv (O_NOFOLLOW)
945 const_iv (O_NONBLOCK)
946 const_iv (O_EXEC)
947 const_iv (O_SEARCH)
948 const_iv (O_DIRECTORY)
949 const_iv (O_DSYNC)
950 const_iv (O_RSYNC)
951 const_iv (O_SYNC)
952 const_iv (O_PATH)
953 const_iv (O_TMPFILE)
954 const_iv (O_TTY_INIT)
955
956 const_iv (S_IFIFO)
957 const_iv (S_IFCHR)
958 const_iv (S_IFBLK)
959 const_iv (S_IFLNK)
960 const_iv (S_IFREG)
961 const_iv (S_IFDIR)
962 const_iv (S_IFWHT)
963 const_iv (S_IFSOCK)
964 const_iv (S_IFMT)
965
966 const_iv (ST_RDONLY)
967 const_iv (ST_NOSUID)
968 const_iv (ST_NODEV)
969 const_iv (ST_NOEXEC)
970 const_iv (ST_SYNCHRONOUS)
971 const_iv (ST_MANDLOCK)
972 const_iv (ST_WRITE)
973 const_iv (ST_APPEND)
974 const_iv (ST_IMMUTABLE)
975 const_iv (ST_NOATIME)
976 const_iv (ST_NODIRATIME)
977 const_iv (ST_RELATIME)
978
979 const_iv (PROT_NONE)
980 const_iv (PROT_EXEC)
981 const_iv (PROT_READ)
982 const_iv (PROT_WRITE)
983
984 const_iv (MAP_PRIVATE)
985 const_iv (MAP_SHARED)
986 const_iv (MAP_FIXED)
987 const_iv (MAP_ANONYMOUS)
988
989 /* linuxish */
990 const_iv (MAP_HUGETLB)
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 (FIEMAP_FLAG_SYNC)
1001 const_iv (FIEMAP_FLAG_XATTR)
1002 const_iv (FIEMAP_FLAGS_COMPAT)
1003 const_iv (FIEMAP_EXTENT_LAST)
1004 const_iv (FIEMAP_EXTENT_UNKNOWN)
1005 const_iv (FIEMAP_EXTENT_DELALLOC)
1006 const_iv (FIEMAP_EXTENT_ENCODED)
1007 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1008 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1009 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1010 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1011 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1012 const_iv (FIEMAP_EXTENT_MERGED)
1013 const_iv (FIEMAP_EXTENT_SHARED)
1014
1015 const_iv (SPLICE_F_MOVE)
1016 const_iv (SPLICE_F_NONBLOCK)
1017 const_iv (SPLICE_F_MORE)
1018 const_iv (SPLICE_F_GIFT)
1019
1020 /* these are libeio constants, and are independent of gendef0 */
1021 const_eio (SEEK_SET)
1022 const_eio (SEEK_CUR)
1023 const_eio (SEEK_END)
1024
1025 const_eio (MCL_FUTURE)
1026 const_eio (MCL_CURRENT)
1027
1028 const_eio (MS_ASYNC)
1029 const_eio (MS_INVALIDATE)
1030 const_eio (MS_SYNC)
1031
1032 const_eio (MT_MODIFY)
1033
1034 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1035 const_eio (SYNC_FILE_RANGE_WRITE)
1036 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1037
1038 const_eio (FALLOC_FL_KEEP_SIZE)
1039 const_eio (FALLOC_FL_PUNCH_HOLE)
1040 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1041 const_eio (FALLOC_FL_ZERO_RANGE)
1042
1043 const_eio (READDIR_DENTS)
1044 const_eio (READDIR_DIRS_FIRST)
1045 const_eio (READDIR_STAT_ORDER)
1046 const_eio (READDIR_FOUND_UNKNOWN)
1047
1048 const_eio (DT_UNKNOWN)
1049 const_eio (DT_FIFO)
1050 const_eio (DT_CHR)
1051 const_eio (DT_DIR)
1052 const_eio (DT_BLK)
1053 const_eio (DT_REG)
1054 const_eio (DT_LNK)
1055 const_eio (DT_SOCK)
1056 const_eio (DT_WHT)
1057 };
1058
1265 HV *stash = gv_stashpv ("IO::AIO", 1); 1059 aio_stash = gv_stashpv ("IO::AIO" , 1);
1060 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1061 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1062 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1266 1063
1267 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1064 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1268 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1065 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 1066
1274 create_pipe (); 1067 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1275 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1276}
1277 1068
1069 reinit ();
1070}
1071
1278void 1072void
1073reinit ()
1074 PROTOTYPE:
1075
1076void
1279max_poll_reqs (int nreqs) 1077max_poll_reqs (unsigned int nreqs)
1280 PROTOTYPE: $ 1078 PROTOTYPE: $
1281 CODE: 1079 CODE:
1282 max_poll_reqs = nreqs; 1080 eio_set_max_poll_reqs (nreqs);
1283 1081
1284void 1082void
1285max_poll_time (double nseconds) 1083max_poll_time (double nseconds)
1286 PROTOTYPE: $ 1084 PROTOTYPE: $
1287 CODE: 1085 CODE:
1288 max_poll_time = nseconds * AIO_TICKS; 1086 eio_set_max_poll_time (nseconds);
1289 1087
1290void 1088void
1291min_parallel (int nthreads) 1089min_parallel (unsigned int nthreads)
1292 PROTOTYPE: $
1293
1294void
1295max_parallel (int nthreads)
1296 PROTOTYPE: $
1297
1298void
1299max_idle (int nthreads)
1300 PROTOTYPE: $ 1090 PROTOTYPE: $
1301 CODE: 1091 CODE:
1302 set_max_idle (nthreads); 1092 eio_set_min_parallel (nthreads);
1303 1093
1304int 1094void
1305max_outstanding (int maxreqs) 1095max_parallel (unsigned int nthreads)
1306 PROTOTYPE: $ 1096 PROTOTYPE: $
1307 CODE: 1097 CODE:
1308 RETVAL = max_outstanding; 1098 eio_set_max_parallel (nthreads);
1099
1100void
1101max_idle (unsigned int nthreads)
1102 PROTOTYPE: $
1103 CODE:
1104 eio_set_max_idle (nthreads);
1105
1106void
1107idle_timeout (unsigned int seconds)
1108 PROTOTYPE: $
1109 CODE:
1110 eio_set_idle_timeout (seconds);
1111
1112void
1113max_outstanding (unsigned int maxreqs)
1114 PROTOTYPE: $
1115 CODE:
1309 max_outstanding = maxreqs; 1116 max_outstanding = maxreqs;
1310 OUTPUT:
1311 RETVAL
1312 1117
1313void 1118void
1314aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1119aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1315 SV8 * pathname
1316 int flags
1317 int mode
1318 SV * callback
1319 PROTOTYPE: $$$;$
1320 PPCODE: 1120 PPCODE:
1321{ 1121{
1322 dREQ; 1122 dREQ;
1323 1123
1124 req->type = EIO_WD_OPEN;
1125 req_set_path1 (req, pathname);
1126
1127 REQ_SEND;
1128}
1129
1130void
1131aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1132 PPCODE:
1133{
1134 dREQ;
1135
1324 req->type = REQ_OPEN; 1136 req->type = EIO_OPEN;
1325 req->sv1 = newSVsv (pathname); 1137 req_set_path1 (req, pathname);
1326 req->ptr1 = SvPVbyte_nolen (req->sv1);
1327 req->int1 = flags; 1138 req->int1 = flags;
1328 req->mode = mode; 1139 req->int2 = mode;
1329 1140
1330 REQ_SEND; 1141 REQ_SEND;
1331} 1142}
1332 1143
1333void 1144void
1334aio_close (fh,callback=&PL_sv_undef) 1145aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1335 SV * fh
1336 SV * callback
1337 PROTOTYPE: $;$
1338 ALIAS: 1146 ALIAS:
1339 aio_close = REQ_CLOSE
1340 aio_fsync = REQ_FSYNC 1147 aio_fsync = EIO_FSYNC
1341 aio_fdatasync = REQ_FDATASYNC 1148 aio_fdatasync = EIO_FDATASYNC
1149 aio_syncfs = EIO_SYNCFS
1342 PPCODE: 1150 PPCODE:
1343{ 1151{
1152 int fd = s_fileno_croak (fh, 0);
1344 dREQ; 1153 dREQ;
1345 1154
1346 req->type = ix; 1155 req->type = ix;
1347 req->fh = newSVsv (fh); 1156 req->sv1 = newSVsv (fh);
1348 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1157 req->int1 = fd;
1349 1158
1350 REQ_SEND (req); 1159 REQ_SEND;
1351} 1160}
1352 1161
1353void 1162void
1163aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1164 PPCODE:
1165{
1166 int fd = s_fileno_croak (fh, 0);
1167 dREQ;
1168
1169 req->type = EIO_SYNC_FILE_RANGE;
1170 req->sv1 = newSVsv (fh);
1171 req->int1 = fd;
1172 req->offs = offset;
1173 req->size = nbytes;
1174 req->int2 = flags;
1175
1176 REQ_SEND;
1177}
1178
1179void
1180aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1181 PPCODE:
1182{
1183 int fd = s_fileno_croak (fh, 0);
1184 dREQ;
1185
1186 req->type = EIO_FALLOCATE;
1187 req->sv1 = newSVsv (fh);
1188 req->int1 = fd;
1189 req->int2 = mode;
1190 req->offs = offset;
1191 req->size = len;
1192
1193 REQ_SEND;
1194}
1195
1196void
1197aio_close (SV *fh, SV *callback = &PL_sv_undef)
1198 PPCODE:
1199{
1200 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1201 int fd = s_fileno_croak (fh, 0);
1202 dREQ;
1203
1204 if (expect_false (close_fd < 0))
1205 {
1206 int pipefd [2];
1207
1208 if (
1209#ifdef _WIN32
1210 _pipe (pipefd, 1, _O_BINARY) < 0
1211#else
1212 pipe (pipefd) < 0
1213 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1214#endif
1215 || close (pipefd [1]) < 0
1216 )
1217 abort (); /*D*/
1218
1219 close_fd = pipefd [0];
1220 }
1221
1222 req->type = EIO_DUP2;
1223 req->int1 = close_fd;
1224 req->sv2 = newSVsv (fh);
1225 req->int2 = fd;
1226
1227 REQ_SEND;
1228}
1229
1230void
1231aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1232 PPCODE:
1233{
1234 int fd = s_fileno_croak (fh, 0);
1235 dREQ;
1236
1237 req->type = EIO_SEEK;
1238 req->sv1 = newSVsv (fh);
1239 req->int1 = fd;
1240 req->offs = SvVAL64 (offset);
1241 req->int2 = whence;
1242
1243 REQ_SEND;
1244}
1245
1246void
1354aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1247aio_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: 1248 ALIAS:
1362 aio_read = REQ_READ 1249 aio_read = EIO_READ
1363 aio_write = REQ_WRITE 1250 aio_write = EIO_WRITE
1364 PROTOTYPE: $$$$$;$
1365 PPCODE: 1251 PPCODE:
1366{ 1252{
1367 STRLEN svlen; 1253 STRLEN svlen;
1254 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1368 char *svptr = SvPVbyte (data, svlen); 1255 char *svptr = SvPVbyte (data, svlen);
1369 1256 UV len = SvUV (length);
1370 SvUPGRADE (data, SVt_PV);
1371 SvPOK_on (data);
1372 1257
1373 if (dataoffset < 0) 1258 if (dataoffset < 0)
1374 dataoffset += svlen; 1259 dataoffset += svlen;
1375 1260
1376 if (dataoffset < 0 || dataoffset > svlen) 1261 if (dataoffset < 0 || dataoffset > svlen)
1377 croak ("data offset outside of string"); 1262 croak ("dataoffset outside of data scalar");
1378 1263
1379 if (ix == REQ_WRITE) 1264 if (ix == EIO_WRITE)
1380 { 1265 {
1381 /* write: check length and adjust. */ 1266 /* write: check length and adjust. */
1382 if (length < 0 || length + dataoffset > svlen) 1267 if (!SvOK (length) || len + dataoffset > svlen)
1383 length = svlen - dataoffset; 1268 len = svlen - dataoffset;
1384 } 1269 }
1385 else 1270 else
1386 { 1271 {
1387 /* read: grow scalar as necessary */ 1272 /* read: check type and grow scalar as necessary */
1273 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1388 svptr = SvGROW (data, length + dataoffset); 1274 svptr = sv_grow (data, len + dataoffset + 1);
1275 else if (SvCUR (data) < len + dataoffset)
1276 croak ("length + dataoffset outside of scalar, and cannot grow");
1389 } 1277 }
1390
1391 if (length < 0)
1392 croak ("length must not be negative");
1393 1278
1394 { 1279 {
1395 dREQ; 1280 dREQ;
1396 1281
1397 req->type = ix; 1282 req->type = ix;
1398 req->fh = newSVsv (fh); 1283 req->sv1 = newSVsv (fh);
1399 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1284 req->int1 = fd;
1400 : IoOFP (sv_2io (fh))); 1285 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1401 req->offs = offset;
1402 req->size = length; 1286 req->size = len;
1403 req->sv1 = SvREFCNT_inc (data); 1287 req->sv2 = SvREFCNT_inc (data);
1404 req->ptr1 = (char *)svptr + dataoffset; 1288 req->ptr2 = (char *)svptr + dataoffset;
1405 req->stroffset = dataoffset; 1289 req->stroffset = dataoffset;
1406 1290
1407 if (!SvREADONLY (data)) 1291 if (!SvREADONLY (data))
1408 { 1292 {
1409 SvREADONLY_on (data); 1293 SvREADONLY_on (data);
1410 req->flags |= FLAG_SV1_RO_OFF; 1294 req->flags |= FLAG_SV2_RO_OFF;
1411 } 1295 }
1412 1296
1413 REQ_SEND; 1297 REQ_SEND;
1414 } 1298 }
1415} 1299}
1416 1300
1417void 1301void
1418aio_readlink (path,callback=&PL_sv_undef) 1302aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1419 SV8 * path 1303 ALIAS:
1420 SV * callback 1304 aio_readlink = EIO_READLINK
1421 PROTOTYPE: $$;$ 1305 aio_realpath = EIO_REALPATH
1422 PPCODE: 1306 PPCODE:
1423{ 1307{
1424 SV *data;
1425 dREQ; 1308 dREQ;
1426 1309
1427 data = newSV (NAME_MAX);
1428 SvPOK_on (data);
1429
1430 req->type = REQ_READLINK; 1310 req->type = ix;
1431 req->fh = newSVsv (path); 1311 req_set_path1 (req, pathname);
1432 req->ptr2 = SvPVbyte_nolen (req->fh);
1433 req->sv1 = data;
1434 req->ptr1 = SvPVbyte_nolen (data);
1435 1312
1436 REQ_SEND; 1313 REQ_SEND;
1437} 1314}
1438 1315
1439void 1316void
1440aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1317aio_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: $$$$;$
1447 PPCODE: 1318 PPCODE:
1448{ 1319{
1320 int ifd = s_fileno_croak (in_fh , 0);
1321 int ofd = s_fileno_croak (out_fh, 1);
1449 dREQ; 1322 dREQ;
1450 1323
1451 req->type = REQ_SENDFILE; 1324 req->type = EIO_SENDFILE;
1452 req->fh = newSVsv (out_fh); 1325 req->sv1 = newSVsv (out_fh);
1453 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1326 req->int1 = ofd;
1454 req->sv2 = newSVsv (in_fh); 1327 req->sv2 = newSVsv (in_fh);
1455 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1328 req->int2 = ifd;
1456 req->offs = in_offset; 1329 req->offs = in_offset;
1457 req->size = length; 1330 req->size = length;
1458 1331
1459 REQ_SEND; 1332 REQ_SEND;
1460} 1333}
1461 1334
1462void 1335void
1463aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1336aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1464 SV * fh
1465 UV offset
1466 IV length
1467 SV * callback
1468 PROTOTYPE: $$$;$
1469 PPCODE: 1337 PPCODE:
1470{ 1338{
1339 int fd = s_fileno_croak (fh, 0);
1471 dREQ; 1340 dREQ;
1472 1341
1473 req->type = REQ_READAHEAD; 1342 req->type = EIO_READAHEAD;
1474 req->fh = newSVsv (fh); 1343 req->sv1 = newSVsv (fh);
1475 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1344 req->int1 = fd;
1476 req->offs = offset; 1345 req->offs = offset;
1477 req->size = length; 1346 req->size = length;
1478 1347
1479 REQ_SEND; 1348 REQ_SEND;
1480} 1349}
1481 1350
1482void 1351void
1483aio_stat (fh_or_path,callback=&PL_sv_undef) 1352aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1484 SV8 * fh_or_path
1485 SV * callback
1486 ALIAS: 1353 ALIAS:
1487 aio_stat = REQ_STAT 1354 aio_stat = EIO_STAT
1488 aio_lstat = REQ_LSTAT 1355 aio_lstat = EIO_LSTAT
1356 aio_statvfs = EIO_STATVFS
1489 PPCODE: 1357 PPCODE:
1490{ 1358{
1491 dREQ; 1359 dREQ;
1492 1360
1493 req->ptr2 = malloc (sizeof (Stat_t)); 1361 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 1362
1515 REQ_SEND; 1363 REQ_SEND;
1516} 1364}
1517 1365
1366UV
1367major (UV dev)
1368 ALIAS:
1369 minor = 1
1370 CODE:
1371 RETVAL = ix ? major (dev) : minor (dev);
1372 OUTPUT:
1373 RETVAL
1374
1375UV
1376makedev (UV maj, UV min)
1377 CODE:
1378 RETVAL = makedev (maj, min);
1379 OUTPUT:
1380 RETVAL
1381
1518void 1382void
1383aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1384 PPCODE:
1385{
1386 dREQ;
1387
1388 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1389 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1390 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1391
1392 REQ_SEND;
1393}
1394
1395void
1396aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1397 PPCODE:
1398{
1399 dREQ;
1400
1401 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1403
1404 REQ_SEND;
1405}
1406
1407void
1408aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1409 PPCODE:
1410{
1411 dREQ;
1412
1413 req->int2 = mode;
1414 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1415
1416 REQ_SEND;
1417}
1418
1419void
1420aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1421 PPCODE:
1422{
1423 dREQ;
1424
1425 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1426 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1427 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1428
1429 REQ_SEND;
1430}
1431
1432void
1433aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1434 PPCODE:
1435{
1436 dREQ;
1437
1438 req->type = EIO_READDIR;
1439 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1440
1441 if (flags & EIO_READDIR_DENTS)
1442 req->int1 |= EIO_READDIR_CUSTOM2;
1443
1444 req_set_path1 (req, pathname);
1445
1446 REQ_SEND;
1447}
1448
1449void
1450aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1451 PPCODE:
1452{
1453 dREQ;
1454
1455 req->type = EIO_MKDIR;
1456 req->int2 = mode;
1457 req_set_path1 (req, pathname);
1458
1459 REQ_SEND;
1460}
1461
1462void
1519aio_unlink (pathname,callback=&PL_sv_undef) 1463aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1520 SV8 * pathname
1521 SV * callback
1522 ALIAS: 1464 ALIAS:
1523 aio_unlink = REQ_UNLINK 1465 aio_unlink = EIO_UNLINK
1524 aio_rmdir = REQ_RMDIR 1466 aio_rmdir = EIO_RMDIR
1525 aio_readdir = REQ_READDIR 1467 aio_readdir = EIO_READDIR
1526 PPCODE: 1468 PPCODE:
1527{ 1469{
1528 dREQ; 1470 dREQ;
1529 1471
1530 req->type = ix; 1472 req->type = ix;
1531 req->sv1 = newSVsv (pathname); 1473 req_set_path1 (req, pathname);
1532 req->ptr1 = SvPVbyte_nolen (req->sv1);
1533 1474
1534 REQ_SEND; 1475 REQ_SEND;
1535} 1476}
1536 1477
1537void 1478void
1538aio_link (oldpath,newpath,callback=&PL_sv_undef) 1479aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1539 SV8 * oldpath
1540 SV8 * newpath
1541 SV * callback
1542 ALIAS: 1480 ALIAS:
1543 aio_link = REQ_LINK 1481 aio_link = EIO_LINK
1544 aio_symlink = REQ_SYMLINK 1482 aio_symlink = EIO_SYMLINK
1545 aio_rename = REQ_RENAME 1483 aio_rename = EIO_RENAME
1546 PPCODE: 1484 PPCODE:
1547{ 1485{
1486 eio_wd wd2 = 0;
1548 dREQ; 1487 dREQ;
1549 1488
1550 req->type = ix; 1489 req->type = ix;
1551 req->fh = newSVsv (oldpath); 1490 req_set_path1 (req, oldpath);
1552 req->ptr2 = SvPVbyte_nolen (req->fh); 1491 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1553 req->sv1 = newSVsv (newpath); 1492 req->int3 = (long)wd2;
1554 req->ptr1 = SvPVbyte_nolen (req->sv1);
1555 1493
1556 REQ_SEND; 1494 REQ_SEND;
1557} 1495}
1558 1496
1559void 1497void
1560aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1498aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1561 SV8 * pathname
1562 SV * callback
1563 UV mode
1564 UV dev
1565 PPCODE: 1499 PPCODE:
1566{ 1500{
1567 dREQ; 1501 dREQ;
1568 1502
1569 req->type = REQ_MKNOD; 1503 req->type = EIO_MKNOD;
1570 req->sv1 = newSVsv (pathname);
1571 req->ptr1 = SvPVbyte_nolen (req->sv1);
1572 req->mode = (mode_t)mode; 1504 req->int2 = (mode_t)mode;
1573 req->offs = dev; 1505 req->offs = dev;
1506 req_set_path1 (req, pathname);
1574 1507
1575 REQ_SEND; 1508 REQ_SEND;
1576} 1509}
1577 1510
1578void 1511void
1512aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1513 ALIAS:
1514 aio_mtouch = EIO_MTOUCH
1515 aio_msync = EIO_MSYNC
1516 PPCODE:
1517{
1518 STRLEN svlen;
1519 char *svptr = SvPVbyte (data, svlen);
1520 UV len = SvUV (length);
1521
1522 if (offset < 0)
1523 offset += svlen;
1524
1525 if (offset < 0 || offset > svlen)
1526 croak ("offset outside of scalar");
1527
1528 if (!SvOK (length) || len + offset > svlen)
1529 len = svlen - offset;
1530
1531 {
1532 dREQ;
1533
1534 req->type = ix;
1535 req->sv2 = SvREFCNT_inc (data);
1536 req->ptr2 = (char *)svptr + offset;
1537 req->size = len;
1538 req->int1 = flags;
1539
1540 REQ_SEND;
1541 }
1542}
1543
1544void
1545aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1546 PPCODE:
1547{
1548 STRLEN svlen;
1549 char *svptr = SvPVbyte (data, svlen);
1550 UV len = SvUV (length);
1551
1552 if (offset < 0)
1553 offset += svlen;
1554
1555 if (offset < 0 || offset > svlen)
1556 croak ("offset outside of scalar");
1557
1558 if (!SvOK (length) || len + offset > svlen)
1559 len = svlen - offset;
1560
1561 {
1562 dREQ;
1563
1564 req->type = EIO_MLOCK;
1565 req->sv2 = SvREFCNT_inc (data);
1566 req->ptr2 = (char *)svptr + offset;
1567 req->size = len;
1568
1569 REQ_SEND;
1570 }
1571}
1572
1573void
1574aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1575 PPCODE:
1576{
1577 dREQ;
1578
1579 req->type = EIO_MLOCKALL;
1580 req->int1 = flags;
1581
1582 REQ_SEND;
1583}
1584
1585void
1586aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1587 PPCODE:
1588{
1589 int fd = s_fileno_croak (fh, 0);
1590 dREQ;
1591
1592 req->type = EIO_CUSTOM;
1593 req->sv1 = newSVsv (fh);
1594 req->int1 = fd;
1595
1596 req->feed = fiemap;
1597#if HAVE_FIEMAP
1598 /* keep our fingers crossed that the next two types are 64 bit */
1599 req->offs = start;
1600 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1601 req->int2 = flags;
1602 req->int3 = SvOK (count) ? SvIV (count) : -1;
1603#endif
1604
1605 REQ_SEND;
1606}
1607
1608void
1579aio_busy (delay,callback=&PL_sv_undef) 1609aio_busy (double delay, SV *callback = &PL_sv_undef)
1580 double delay
1581 SV * callback
1582 PPCODE: 1610 PPCODE:
1583{ 1611{
1584 dREQ; 1612 dREQ;
1585 1613
1586 req->type = REQ_BUSY; 1614 req->type = EIO_BUSY;
1587 req->int1 = delay < 0. ? 0 : delay; 1615 req->nv1 = delay < 0. ? 0. : delay;
1588 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1589 1616
1590 REQ_SEND; 1617 REQ_SEND;
1591} 1618}
1592 1619
1593void 1620void
1594aio_group (callback=&PL_sv_undef) 1621aio_group (SV *callback = &PL_sv_undef)
1595 SV * callback
1596 PROTOTYPE: ;$
1597 PPCODE: 1622 PPCODE:
1598{ 1623{
1599 dREQ; 1624 dREQ;
1600 1625
1601 req->type = REQ_GROUP; 1626 req->type = EIO_GROUP;
1602 1627
1628 PUTBACK;
1603 req_send (req); 1629 req_submit (req);
1630 SPAGAIN;
1631
1604 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1632 XPUSHs (req_sv (req, aio_grp_stash));
1605} 1633}
1606 1634
1607void 1635void
1608aio_nop (callback=&PL_sv_undef) 1636aio_nop (SV *callback = &PL_sv_undef)
1609 SV * callback 1637 ALIAS:
1638 aio_nop = EIO_NOP
1639 aio_sync = EIO_SYNC
1610 PPCODE: 1640 PPCODE:
1611{ 1641{
1612 dREQ; 1642 dREQ;
1613 1643
1614 req->type = REQ_NOP; 1644 req->type = ix;
1615 1645
1616 REQ_SEND; 1646 REQ_SEND;
1617} 1647}
1618 1648
1619int 1649int
1620aioreq_pri (int pri = 0) 1650aioreq_pri (int pri = NO_INIT)
1621 PROTOTYPE: ;$
1622 CODE: 1651 CODE:
1623 RETVAL = next_pri - PRI_BIAS; 1652 RETVAL = next_pri;
1624 if (items > 0) 1653 if (items > 0)
1625 { 1654 {
1626 if (pri < PRI_MIN) pri = PRI_MIN; 1655 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1627 if (pri > PRI_MAX) pri = PRI_MAX; 1656 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1628 next_pri = pri + PRI_BIAS; 1657 next_pri = pri;
1629 } 1658 }
1630 OUTPUT: 1659 OUTPUT:
1631 RETVAL 1660 RETVAL
1632 1661
1633void 1662void
1634aioreq_nice (int nice = 0) 1663aioreq_nice (int nice = 0)
1635 CODE: 1664 CODE:
1636 nice = next_pri - nice; 1665 nice = next_pri - nice;
1637 if (nice < PRI_MIN) nice = PRI_MIN; 1666 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1638 if (nice > PRI_MAX) nice = PRI_MAX; 1667 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1639 next_pri = nice + PRI_BIAS; 1668 next_pri = nice;
1640 1669
1641void 1670void
1642flush () 1671flush ()
1643 PROTOTYPE:
1644 CODE: 1672 CODE:
1645 while (nreqs) 1673 while (eio_nreqs ())
1646 { 1674 {
1647 poll_wait (); 1675 poll_wait ();
1648 poll_cb (); 1676 poll_cb ();
1649 } 1677 }
1650 1678
1651int 1679int
1652poll() 1680poll ()
1653 PROTOTYPE:
1654 CODE: 1681 CODE:
1655 poll_wait (); 1682 poll_wait ();
1656 RETVAL = poll_cb (); 1683 RETVAL = poll_cb ();
1657 OUTPUT: 1684 OUTPUT:
1658 RETVAL 1685 RETVAL
1659 1686
1660int 1687int
1661poll_fileno() 1688poll_fileno ()
1662 PROTOTYPE:
1663 CODE: 1689 CODE:
1664 RETVAL = respipe [0]; 1690 RETVAL = s_epipe_fd (&respipe);
1665 OUTPUT: 1691 OUTPUT:
1666 RETVAL 1692 RETVAL
1667 1693
1668int 1694int
1669poll_cb(...) 1695poll_cb (...)
1670 PROTOTYPE: 1696 PROTOTYPE:
1671 CODE: 1697 CODE:
1672 RETVAL = poll_cb (); 1698 RETVAL = poll_cb ();
1673 OUTPUT: 1699 OUTPUT:
1674 RETVAL 1700 RETVAL
1675 1701
1676void 1702void
1677poll_wait() 1703poll_wait ()
1678 PROTOTYPE:
1679 CODE: 1704 CODE:
1680 poll_wait (); 1705 poll_wait ();
1681 1706
1682int 1707int
1683nreqs() 1708nreqs ()
1684 PROTOTYPE:
1685 CODE: 1709 CODE:
1686 RETVAL = nreqs; 1710 RETVAL = eio_nreqs ();
1687 OUTPUT: 1711 OUTPUT:
1688 RETVAL 1712 RETVAL
1689 1713
1690int 1714int
1691nready() 1715nready ()
1692 PROTOTYPE:
1693 CODE: 1716 CODE:
1694 RETVAL = get_nready (); 1717 RETVAL = eio_nready ();
1695 OUTPUT: 1718 OUTPUT:
1696 RETVAL 1719 RETVAL
1697 1720
1698int 1721int
1699npending() 1722npending ()
1700 PROTOTYPE:
1701 CODE: 1723 CODE:
1702 RETVAL = get_npending (); 1724 RETVAL = eio_npending ();
1703 OUTPUT: 1725 OUTPUT:
1704 RETVAL 1726 RETVAL
1705 1727
1706int 1728int
1707nthreads() 1729nthreads ()
1708 PROTOTYPE:
1709 CODE: 1730 CODE:
1710 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1731 RETVAL = eio_nthreads ();
1711 RETVAL = started;
1712 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1713 OUTPUT: 1732 OUTPUT:
1714 RETVAL 1733 RETVAL
1715 1734
1735int
1736fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1737 CODE:
1738 RETVAL = posix_fadvise (fh, offset, length, advice);
1739 OUTPUT:
1740 RETVAL
1741
1742IV
1743sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1744 CODE:
1745 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1746 OUTPUT:
1747 RETVAL
1748
1749void
1750mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1751 PPCODE:
1752 sv_unmagic (scalar, MMAP_MAGIC);
1753{
1754 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1755 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1756 if (addr == (void *)-1)
1757 XSRETURN_NO;
1758
1759 sv_force_normal (scalar);
1760
1761 /* we store the length in mg_obj, as namlen is I32 :/ */
1762 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1763 ->mg_obj = (SV *)length;
1764
1765 SvUPGRADE (scalar, SVt_PV); /* nop... */
1766
1767 if (!(prot & PROT_WRITE))
1768 SvREADONLY_on (scalar);
1769
1770 if (SvLEN (scalar))
1771 Safefree (SvPVX (scalar));
1772
1773 SvPVX (scalar) = (char *)addr;
1774 SvCUR_set (scalar, length);
1775 SvLEN_set (scalar, 0);
1776 SvPOK_only (scalar);
1777
1778 XSRETURN_YES;
1779}
1780
1781void
1782munmap (SV *scalar)
1783 CODE:
1784 sv_unmagic (scalar, MMAP_MAGIC);
1785
1786int
1787madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1788 ALIAS:
1789 mprotect = 1
1790 CODE:
1791{
1792 STRLEN svlen;
1793 void *addr = SvPVbyte (scalar, svlen);
1794 STRLEN len = SvUV (length);
1795
1796 if (offset < 0)
1797 offset += svlen;
1798
1799 if (offset < 0 || offset > svlen)
1800 croak ("offset outside of scalar");
1801
1802 if (!SvOK (length) || len + offset > svlen)
1803 len = svlen - offset;
1804
1805 addr = (void *)(((intptr_t)addr) + offset);
1806 eio_page_align (&addr, &len);
1807
1808 switch (ix)
1809 {
1810 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1811 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1812 }
1813}
1814 OUTPUT:
1815 RETVAL
1816
1817int
1818munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1819 CODE:
1820{
1821 STRLEN svlen;
1822 void *addr = SvPVbyte (scalar, svlen);
1823 size_t len = SvUV (length);
1824
1825 if (offset < 0)
1826 offset += svlen;
1827
1828 if (offset < 0 || offset > svlen)
1829 croak ("offset outside of scalar");
1830
1831 if (!SvOK (length) || len + offset > svlen)
1832 len = svlen - offset;
1833
1834 addr = (void *)(((intptr_t)addr) + offset);
1835 eio_page_align (&addr, &len);
1836#if _POSIX_MEMLOCK_RANGE
1837 RETVAL = munlock (addr, len);
1838#else
1839 RETVAL = EIO_ENOSYS ();
1840#endif
1841}
1842 OUTPUT:
1843 RETVAL
1844
1845int
1846munlockall ()
1847 CODE:
1848#if _POSIX_MEMLOCK
1849 munlockall ();
1850#else
1851 RETVAL = EIO_ENOSYS ();
1852#endif
1853 OUTPUT:
1854 RETVAL
1855
1856int
1857splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1858 CODE:
1859{
1860#if HAVE_LINUX_SPLICE
1861 loff_t off_in_, off_out_;
1862 RETVAL = splice (
1863 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1864 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1865 length, flags
1866 );
1867#else
1868 RETVAL = EIO_ENOSYS ();
1869#endif
1870}
1871 OUTPUT:
1872 RETVAL
1873
1874int
1875tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1876 CODE:
1877#if HAVE_LINUX_SPLICE
1878 RETVAL = tee (rfh, wfh, length, flags);
1879#else
1880 RETVAL = EIO_ENOSYS ();
1881#endif
1882 OUTPUT:
1883 RETVAL
1884
1885int
1886pipesize (aio_rfd rfh, int new_size = -1)
1887 PROTOTYPE: $;$
1888 CODE:
1889#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1890 if (new_size >= 0)
1891 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1892 else
1893 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1894#else
1895 errno = ENOSYS;
1896 RETVAL = -1;
1897#endif
1898 OUTPUT:
1899 RETVAL
1900
1901void
1902pipe2 (int flags = 0)
1903 PROTOTYPE: ;$
1904 PPCODE:
1905{
1906 int fd[2];
1907 int res;
1908
1909 if (flags)
1910#if HAVE_PIPE2
1911 res = pipe2 (fd, flags);
1912#else
1913 res = (errno = ENOSYS, -1);
1914#endif
1915 else
1916 res = pipe (fd);
1917
1918 if (!res)
1919 {
1920 EXTEND (SP, 2);
1921 PUSHs (newmortalFH (fd[0], O_RDONLY));
1922 PUSHs (newmortalFH (fd[1], O_WRONLY));
1923 }
1924}
1925
1926void _on_next_submit (SV *cb)
1927 CODE:
1928 SvREFCNT_dec (on_next_submit);
1929 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1930
1716PROTOTYPES: DISABLE 1931PROTOTYPES: DISABLE
1932
1933MODULE = IO::AIO PACKAGE = IO::AIO::WD
1934
1935BOOT:
1936{
1937 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1938 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1939}
1940
1941void
1942DESTROY (SV *self)
1943 CODE:
1944{
1945 aio_wd wd = SvAIO_WD (self);
1946#if HAVE_AT
1947 {
1948 SV *callback = &PL_sv_undef;
1949 dREQ; /* clobbers next_pri :/ */
1950 next_pri = req->pri; /* restore next_pri */
1951 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1952 req->type = EIO_WD_CLOSE;
1953 req->wd = wd;
1954 REQ_SEND;
1955 }
1956#else
1957 eio_wd_close_sync (wd);
1958#endif
1959}
1717 1960
1718MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1961MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1719 1962
1720void 1963void
1721cancel (aio_req_ornot req) 1964cancel (aio_req_ornot req)
1722 CODE: 1965 CODE:
1723 req_cancel (req); 1966 eio_cancel (req);
1724 1967
1725void 1968void
1726cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1969cb (aio_req_ornot req, SV *callback = NO_INIT)
1727 CODE: 1970 PPCODE:
1971{
1972 if (GIMME_V != G_VOID)
1973 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1974
1975 if (items > 1)
1976 {
1977 SV *cb_cv = get_cb (callback);
1978
1728 SvREFCNT_dec (req->callback); 1979 SvREFCNT_dec (req->callback);
1729 req->callback = newSVsv (callback); 1980 req->callback = SvREFCNT_inc (cb_cv);
1981 }
1982}
1730 1983
1731MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1984MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1732 1985
1733void 1986void
1734add (aio_req grp, ...) 1987add (aio_req grp, ...)
1735 PPCODE: 1988 PPCODE:
1736{ 1989{
1737 int i; 1990 int i;
1738 aio_req req;
1739 1991
1740 if (grp->int1 == 2) 1992 if (grp->int1 == 2)
1741 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1993 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742 1994
1743 for (i = 1; i < items; ++i ) 1995 for (i = 1; i < items; ++i )
1744 { 1996 {
1997 aio_req req;
1998
1745 if (GIMME_V != G_VOID) 1999 if (GIMME_V != G_VOID)
1746 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2000 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1747 2001
1748 req = SvAIO_REQ (ST (i)); 2002 req = SvAIO_REQ (ST (i));
1749 2003
1750 if (req) 2004 if (req)
1751 { 2005 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 } 2006 }
1764} 2007}
1765 2008
1766void 2009void
1767cancel_subs (aio_req_ornot req) 2010cancel_subs (aio_req_ornot req)
… …
1776 AV *av; 2019 AV *av;
1777 2020
1778 grp->errorno = errno; 2021 grp->errorno = errno;
1779 2022
1780 av = newAV (); 2023 av = newAV ();
2024 av_extend (av, items - 1);
1781 2025
1782 for (i = 1; i < items; ++i ) 2026 for (i = 1; i < items; ++i )
1783 av_push (av, newSVsv (ST (i))); 2027 av_push (av, newSVsv (ST (i)));
1784 2028
1785 SvREFCNT_dec (grp->sv1); 2029 SvREFCNT_dec (grp->sv1);
… …
1792 grp->errorno = errorno; 2036 grp->errorno = errorno;
1793 2037
1794void 2038void
1795limit (aio_req grp, int limit) 2039limit (aio_req grp, int limit)
1796 CODE: 2040 CODE:
1797 grp->int2 = limit; 2041 eio_grp_limit (grp, limit);
1798 aio_grp_feed (grp);
1799 2042
1800void 2043void
1801feed (aio_req grp, SV *callback=&PL_sv_undef) 2044feed (aio_req grp, SV *callback = &PL_sv_undef)
1802 CODE: 2045 CODE:
1803{ 2046{
1804 SvREFCNT_dec (grp->sv2); 2047 SvREFCNT_dec (grp->sv2);
1805 grp->sv2 = newSVsv (callback); 2048 grp->sv2 = newSVsv (callback);
2049 grp->feed = aio_grp_feed;
1806 2050
1807 if (grp->int2 <= 0) 2051 if (grp->int2 <= 0)
1808 grp->int2 = 2; 2052 grp->int2 = 2;
1809 2053
1810 aio_grp_feed (grp); 2054 eio_grp_limit (grp, grp->int2);
1811} 2055}
1812 2056

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