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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.91 by root, Wed Nov 8 01:57:43 2006 UTC vs.
Revision 1.234 by root, Thu Jun 25 15:20:11 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#include "def0.h"
50 151
51/* used for struct dirent, AIX doesn't provide it */ 152#ifndef makedev
52#ifndef NAME_MAX 153# 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 154#endif
155#ifndef major
156# define major(dev) ((dev) >> 8)
79#endif 157#endif
158#ifndef minor
159# define minor(dev) ((dev) & 0xff)
160#endif
80 161
81/* buffer size for various temporary buffers */ 162#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 163# define PAGESIZE sysconf (_SC_PAGESIZE)
164#endif
83 165
84#define dBUF \ 166/*****************************************************************************/
85 char *aio_buf; \ 167
86 LOCK (wrklock); \ 168static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 169fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 170{
89 if (!aio_buf) \ 171 req->result = -1;
172
173#if HAVE_FIEMAP
174 /* assume some c99 */
175 struct fiemap *fiemap = 0;
176 size_t end_offset;
177 int count = req->int3;
178
179 req->flags |= EIO_FLAG_PTR1_FREE;
180
181 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
182 /* increase in 3.5kb steps */
183 if (count < 0)
184 count = 8;
185
186 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
187 errno = ENOMEM;
188 if (!fiemap)
90 return -1; 189 return;
91 190
92typedef SV SV8; /* byte-sv, used for argument-checking */ 191 req->ptr1 = fiemap;
93 192
94enum { 193 fiemap->fm_start = req->offs;
95 REQ_QUIT, 194 fiemap->fm_length = req->size;
96 REQ_OPEN, REQ_CLOSE, 195 fiemap->fm_flags = req->int2;
97 REQ_READ, REQ_WRITE, REQ_READAHEAD, 196 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};
107 197
108#define AIO_REQ_KLASS "IO::AIO::REQ" 198 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
109#define AIO_GRP_KLASS "IO::AIO::GRP" 199 return;
110 200
111typedef struct aio_cb 201 if (req->int3 >= 0 /* not autosizing */
112{ 202 || !fiemap->fm_mapped_extents /* no more extents */
113 struct aio_cb *volatile next; 203 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
204 goto done;
114 205
115 SV *callback, *fh; 206 /* else we have to loop -
116 SV *sv1, *sv2; 207 * it would be tempting (actually I tried that first) to just query the
117 void *ptr1, *ptr2; 208 * number of extents needed, but linux often feels like not returning all
118 off_t offs; 209 * extents, without telling us it left any out. this complicates
119 size_t size; 210 * this quite a bit.
120 ssize_t result; 211 */
121 212
122 STRLEN stroffset; 213 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 */
127 214
128 unsigned char flags; 215 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 { 216 {
199 closedir (wrk->dirp); 217 /* 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; 218 char scratch[3072];
201 } 219 struct fiemap *incmap = (struct fiemap *)scratch;
202 220
203 if (wrk->dbuf) 221 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 222 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 223 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 224 incmap->fm_flags = fiemap->fm_flags;
207 } 225 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 226
210static void worker_free (worker *wrk) 227 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; 228 return;
305 229
306 --q->size; 230 if (!incmap->fm_mapped_extents)
231 goto done;
307 232
308 for (pri = NUM_PRI; pri--; ) 233 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
309 { 234 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
310 aio_req req = q->qs[pri]; 235 errno = ENOMEM;
311
312 if (req) 236 if (!fiemap)
237 return;
238
239 req->ptr1 = fiemap;
240
241 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 242 {
314 if (!(q->qs[pri] = req->next)) 243 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 244
317 return req; 245 if (e->fe_logical + e->fe_length >= end_offset)
246 goto done;
247
248 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
249
250 if (e->fe_flags & FIEMAP_EXTENT_LAST)
251 goto done;
252
318 } 253 }
319 } 254 }
320 255
321 abort (); 256done:
322} 257 req->result = 0;
323 258
324static int poll_cb (); 259#else
325static void req_invoke (aio_req req); 260 errno = ENOSYS;
261#endif
262}
263
264/*****************************************************************************/
265
266enum {
267 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
268};
269
270typedef eio_req *aio_req;
271typedef eio_req *aio_req_ornot;
272typedef eio_wd aio_wd;
273
274static SV *on_next_submit;
275static int next_pri = EIO_PRI_DEFAULT;
276static int max_outstanding;
277
278static s_epipe respipe;
279
326static void req_free (aio_req req); 280static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 281static void req_cancel (aio_req req);
328 282
283static void
284want_poll (void)
285{
286 /* write a dummy byte to the pipe so fh becomes ready */
287 s_epipe_signal (&respipe);
288}
289
290static void
291done_poll (void)
292{
293 /* read any signals sent by the worker threads */
294 s_epipe_drain (&respipe);
295}
296
329/* must be called at most once */ 297/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 298static SV *
299req_sv (aio_req req, HV *stash)
331{ 300{
332 if (!req->self) 301 if (!req->self)
333 { 302 {
334 req->self = (SV *)newHV (); 303 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 304 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 305 }
337 306
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 307 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 308}
340 309
341static aio_req SvAIO_REQ (SV *sv) 310static SV *
311newSVaio_wd (aio_wd wd)
312{
313 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
314}
315
316static aio_req
317SvAIO_REQ (SV *sv)
342{ 318{
343 MAGIC *mg; 319 MAGIC *mg;
344 320
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 321 if (!SvROK (sv)
322 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
323 || (SvSTASH (SvRV (sv)) != aio_grp_stash
324 && SvSTASH (SvRV (sv)) != aio_req_stash
325 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 326 croak ("object of class IO::AIO::REQ expected");
347 327
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 328 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 329
350 return mg ? (aio_req)mg->mg_ptr : 0; 330 return mg ? (aio_req)mg->mg_ptr : 0;
351} 331}
352 332
333static aio_wd
334SvAIO_WD (SV *sv)
335{
336 if (!SvROK (sv)
337 || SvTYPE (SvRV (sv)) != SVt_PVMG
338 || SvSTASH (SvRV (sv)) != aio_wd_stash)
339 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
340
341 return (aio_wd)(long)SvIVX (SvRV (sv));
342}
343
344static SV *
345newmortalFH (int fd, int flags)
346{
347 if (fd < 0)
348 return &PL_sv_undef;
349
350 GV *gv = (GV *)sv_newmortal ();
351 char sym[64];
352 int symlen;
353
354 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
355 gv_init (gv, aio_stash, sym, symlen, 0);
356
357 symlen = snprintf (
358 sym,
359 sizeof (sym),
360 "%s&=%d",
361 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
362 fd
363 );
364
365 return do_open (gv, sym, symlen, 0, 0, 0, 0)
366 ? (SV *)gv : &PL_sv_undef;
367}
368
369static void
353static void aio_grp_feed (aio_req grp) 370aio_grp_feed (aio_req grp)
354{ 371{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 372 if (grp->sv2 && SvOK (grp->sv2))
356 { 373 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 374 dSP;
362 375
363 ENTER; 376 ENTER;
364 SAVETMPS; 377 SAVETMPS;
365 PUSHMARK (SP); 378 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 379 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 380 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 381 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 382 SPAGAIN;
370 FREETMPS; 383 FREETMPS;
371 LEAVE; 384 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 } 385 }
382} 386}
383 387
384static void aio_grp_dec (aio_req grp) 388static void
389req_submit (eio_req *req)
385{ 390{
386 --grp->size; 391 eio_submit (req);
387 392
388 /* call feeder, if applicable */ 393 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 394 {
394 req_invoke (grp); 395 dSP;
395 req_free (grp); 396 SV *cb = sv_2mortal (on_next_submit);
397
398 on_next_submit = 0;
399
400 PUSHMARK (SP);
401 PUTBACK;
402 call_sv (cb, G_DISCARD | G_EVAL);
396 } 403 }
397} 404}
398 405
406static int
399static void req_invoke (aio_req req) 407req_invoke (eio_req *req)
400{ 408{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 409 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 410 SvREADONLY_off (req->sv2);
405 411
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 412 if (!EIO_CANCELLED (req) && req->callback)
407 { 413 {
414 dSP;
415 static SV *sv_result_cache; /* caches the result integer SV */
416 SV *sv_result;
417
408 ENTER; 418 ENTER;
409 SAVETMPS; 419 SAVETMPS;
410 PUSHMARK (SP); 420 PUSHMARK (SP);
411 EXTEND (SP, 1); 421 EXTEND (SP, 1);
412 422
423 /* do not recreate the result IV from scratch each time */
424 if (expect_true (sv_result_cache))
425 {
426 sv_result = sv_result_cache; sv_result_cache = 0;
427 SvIV_set (sv_result, req->result);
428 SvIOK_only (sv_result);
429 }
430 else
431 {
432 sv_result = newSViv (req->result);
433 SvREADONLY_on (sv_result);
434 }
435
413 switch (req->type) 436 switch (req->type)
414 { 437 {
438 case EIO_WD_OPEN:
439 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
440 break;
441
415 case REQ_READDIR: 442 case EIO_READDIR:
416 { 443 {
417 SV *rv = &PL_sv_undef; 444 SV *rv = &PL_sv_undef;
418 445
419 if (req->result >= 0) 446 if (req->result >= 0)
420 { 447 {
421 int i; 448 int i;
422 char *buf = req->ptr2; 449 char *names = (char *)req->ptr2;
450 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 451 AV *av = newAV ();
424 452
425 av_extend (av, req->result - 1); 453 av_extend (av, req->result - 1);
426 454
427 for (i = 0; i < req->result; ++i) 455 for (i = 0; i < req->result; ++i)
428 { 456 {
429 SV *sv = newSVpv (buf, 0); 457 if (req->int1 & EIO_READDIR_DENTS)
458 {
459 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 460
461 if (req->int1 & EIO_READDIR_CUSTOM2)
462 {
463 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
464 AV *avent = newAV ();
465
466 av_extend (avent, 2);
467
468 if (!sv_type [ent->type])
469 {
470 sv_type [ent->type] = newSViv (ent->type);
471 SvREADONLY_on (sv_type [ent->type]);
472 }
473
474 av_store (avent, 0, namesv);
475 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
476 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
477
478 av_store (av, i, newRV_noinc ((SV *)avent));
479 }
480 else
431 av_store (av, i, sv); 481 av_store (av, i, namesv);
482
483 ++ent;
484 }
485 else
486 {
487 SV *name = newSVpv (names, 0);
488 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 489 names += SvCUR (name) + 1;
490 }
433 } 491 }
434 492
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 493 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 494 }
437 495
438 PUSHs (rv); 496 PUSHs (rv);
497
498 if (req->int1 & EIO_READDIR_CUSTOM1)
499 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 500 }
440 break; 501 break;
441 502
442 case REQ_OPEN: 503 case EIO_OPEN:
504 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
505 break;
506
507 case EIO_STATVFS:
508 case EIO_FSTATVFS:
443 { 509 {
444 /* convert fd to fh */ 510 SV *rv = &PL_sv_undef;
445 SV *fh; 511
512#ifndef _WIN32
513 if (req->result >= 0)
514 {
515 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
516 HV *hv = newHV ();
517 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
518 * chooses to make it a struct.
519 */
520 unsigned long fsid = 0;
521 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
446 522
447 PUSHs (sv_2mortal (newSViv (req->result))); 523 rv = sv_2mortal (newRV_noinc ((SV *)hv));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451 524
452 fh = SvREFCNT_inc (POPs); 525 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
526 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
527 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
528 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
529 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
530 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
531 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
532 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
533 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
534 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
535 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
536 }
537#endif
453 538
454 PUSHMARK (SP); 539 PUSHs (rv);
455 XPUSHs (sv_2mortal (fh));
456 } 540 }
541
457 break; 542 break;
458 543
459 case REQ_GROUP: 544 case EIO_GROUP:
460 req->int1 = 2; /* mark group as finished */ 545 req->int1 = 2; /* mark group as finished */
461 546
462 if (req->sv1) 547 if (req->sv1)
463 { 548 {
464 int i; 549 int i;
… …
468 for (i = 0; i <= AvFILL (av); ++i) 553 for (i = 0; i <= AvFILL (av); ++i)
469 PUSHs (*av_fetch (av, i, 0)); 554 PUSHs (*av_fetch (av, i, 0));
470 } 555 }
471 break; 556 break;
472 557
473 case REQ_NOP: 558 case EIO_NOP:
474 case REQ_BUSY: 559 case EIO_BUSY:
475 break; 560 break;
476 561
477 case REQ_READLINK: 562 case EIO_READLINK:
563 case EIO_REALPATH:
478 if (req->result > 0) 564 if (req->result > 0)
565 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
566 break;
567
568 case EIO_STAT:
569 case EIO_LSTAT:
570 case EIO_FSTAT:
571 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
572
573 if (!(PL_laststatval = req->result))
574 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
575 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
576
577 PUSHs (sv_result);
578 break;
579
580 case EIO_SEEK:
581 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
582 break;
583
584 case EIO_READ:
585 {
586 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
587 *SvEND (req->sv2) = 0;
588 SvPOK_only (req->sv2);
589 SvSETMAGIC (req->sv2);
590 PUSHs (sv_result);
591 }
592 break;
593
594 case EIO_CUSTOM:
595 if (req->feed == fiemap)
479 { 596 {
480 SvCUR_set (req->sv1, req->result); 597#if HAVE_FIEMAP
481 *SvEND (req->sv1) = 0;
482 PUSHs (req->sv1); 598 if (!req->result)
599 {
600 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
601
602 if (fiemap->fm_extent_count)
603 {
604 AV *av = newAV ();
605 int i;
606
607 while (fiemap->fm_mapped_extents)
608 {
609 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
610 AV *ext_av = newAV ();
611
612 av_store (ext_av, 3, newSVuv (extent->fe_flags));
613 av_store (ext_av, 2, newSVval64 (extent->fe_length));
614 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
615 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
616
617 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
618 }
619
620 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
621 }
622 else
623 {
624 SvIV_set (sv_result, fiemap->fm_mapped_extents);
625 PUSHs (sv_result);
626 }
627 }
628#endif
483 } 629 }
630 else
631 PUSHs (sv_result);
484 break; 632 break;
485 633
486 case REQ_STAT: 634 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
487 case REQ_LSTAT: 635 if (req->result > 0)
488 case REQ_FSTAT: 636 SvIV_set (sv_result, 0);
489 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 637 /* FALLTHROUGH */
490 PL_laststatval = req->result;
491 PL_statcache = *(Stat_t *)(req->ptr2);
492 PUSHs (sv_2mortal (newSViv (req->result)));
493 break;
494
495 case REQ_READ:
496 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
497 *SvEND (req->sv1) = 0;
498 PUSHs (sv_2mortal (newSViv (req->result)));
499 break;
500 638
501 default: 639 default:
502 PUSHs (sv_2mortal (newSViv (req->result))); 640 PUSHs (sv_result);
503 break; 641 break;
504 } 642 }
505 643
506 errno = req->errorno; 644 errno = req->errorno;
507 645
508 PUTBACK; 646 PUTBACK;
509 call_sv (req->callback, G_VOID | G_EVAL); 647 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510 SPAGAIN; 648 SPAGAIN;
649
650 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
651 SvREFCNT_dec (sv_result);
652 else
653 sv_result_cache = sv_result;
511 654
512 FREETMPS; 655 FREETMPS;
513 LEAVE; 656 LEAVE;
657
658 PUTBACK;
514 } 659 }
515 660
516 if (req->grp) 661 return !!SvTRUE (ERRSV);
517 {
518 aio_req grp = req->grp;
519
520 /* unlink request */
521 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524 if (grp->grp_first == req)
525 grp->grp_first = req->grp_next;
526
527 aio_grp_dec (grp);
528 }
529
530 if (SvTRUE (ERRSV))
531 {
532 req_free (req);
533 croak (0);
534 }
535} 662}
536 663
537static void req_free (aio_req req) 664static void
665req_destroy (aio_req req)
538{ 666{
539 if (req->self) 667 if (req->self)
540 { 668 {
541 sv_unmagic (req->self, PERL_MAGIC_ext); 669 sv_unmagic (req->self, PERL_MAGIC_ext);
542 SvREFCNT_dec (req->self); 670 SvREFCNT_dec (req->self);
543 } 671 }
544 672
545 SvREFCNT_dec (req->fh);
546 SvREFCNT_dec (req->sv1); 673 SvREFCNT_dec (req->sv1);
547 SvREFCNT_dec (req->sv2); 674 SvREFCNT_dec (req->sv2);
675 SvREFCNT_dec (req->sv3);
676 SvREFCNT_dec (req->sv4);
548 SvREFCNT_dec (req->callback); 677 SvREFCNT_dec (req->callback);
549 678
550 if (req->flags & FLAG_PTR2_FREE)
551 free (req->ptr2);
552
553 Safefree (req); 679 free (req);
554} 680}
555 681
682static void
556static void req_cancel_subs (aio_req grp) 683req_cancel_subs (aio_req grp)
557{ 684{
558 aio_req sub;
559
560 if (grp->type != REQ_GROUP) 685 if (grp->type != EIO_GROUP)
561 return; 686 return;
562 687
563 SvREFCNT_dec (grp->sv2); 688 SvREFCNT_dec (grp->sv2);
564 grp->sv2 = 0; 689 grp->sv2 = 0;
565 690
566 for (sub = grp->grp_first; sub; sub = sub->grp_next) 691 eio_grp_cancel (grp);
567 req_cancel (sub);
568} 692}
569 693
570static void req_cancel (aio_req req) 694static void ecb_cold
695create_respipe (void)
571{ 696{
572 req->flags |= FLAG_CANCELLED; 697 if (s_epipe_renew (&respipe))
573 698 croak ("IO::AIO: unable to initialize result pipe");
574 req_cancel_subs (req);
575} 699}
576 700
577static void *aio_proc(void *arg); 701static void
578 702poll_wait (void)
579static void start_thread (void)
580{ 703{
581 sigset_t fullsigset, oldsigset;
582 pthread_attr_t attr;
583
584 worker *wrk = calloc (1, sizeof (worker));
585
586 if (!wrk)
587 croak ("unable to allocate worker thread data");
588
589 pthread_attr_init (&attr);
590 pthread_attr_setstacksize (&attr, STACKSIZE);
591 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592#ifdef PTHREAD_SCOPE_PROCESS
593 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594#endif
595
596 sigfillset (&fullsigset);
597
598 LOCK (wrklock);
599 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602 {
603 wrk->prev = &wrk_first;
604 wrk->next = wrk_first.next;
605 wrk_first.next->prev = wrk;
606 wrk_first.next = wrk;
607 ++started;
608 }
609 else
610 free (wrk);
611
612 sigprocmask (SIG_SETMASK, &oldsigset, 0);
613 UNLOCK (wrklock);
614}
615
616static void maybe_start_thread ()
617{
618 if (get_nthreads () >= wanted)
619 return;
620
621 /* todo: maybe use idle here, but might be less exact */
622 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623 return;
624
625 start_thread ();
626}
627
628static void req_send (aio_req req)
629{
630 ++nreqs;
631
632 LOCK (reqlock);
633 ++nready;
634 reqq_push (&req_queue, req);
635 pthread_cond_signal (&reqwait);
636 UNLOCK (reqlock);
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 pthread_cond_signal (&reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 704 while (eio_nreqs ())
687 { 705 {
688 int size; 706 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 707
708 X_LOCK (reslock);
690 size = res_queue.size; 709 size = res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 710 X_UNLOCK (reslock);
692 711
693 if (size) 712 if (size)
694 return; 713 return;
695 714
696 maybe_start_thread (); 715 etp_maybe_start_thread ();
697 716
698 FD_ZERO(&rfd); 717 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 718 }
703} 719}
704 720
705static int poll_cb () 721static int
722poll_cb (void)
706{ 723{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 for (;;) 724 for (;;)
718 { 725 {
719 for (;;) 726 int res = eio_poll ();
727
728 if (res > 0)
729 croak (0);
730
731 if (!max_outstanding || max_outstanding > eio_nreqs ())
732 return res;
733
734 poll_wait ();
735 }
736}
737
738static void ecb_cold
739reinit (void)
740{
741 create_respipe ();
742
743 if (eio_init (want_poll, done_poll) < 0)
744 croak ("IO::AIO: unable to initialise eio library");
745}
746
747/*****************************************************************************/
748
749#if !_POSIX_MAPPED_FILES
750# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
751# define munmap(addr,length) EIO_ENOSYS ()
752#endif
753
754#if !_POSIX_MEMORY_PROTECTION
755# define mprotect(addr,len,prot) EIO_ENOSYS ()
756# define PROT_NONE 0
757# define PROT_WRITE 0
758# define MAP_PRIVATE 0
759# define MAP_SHARED 0
760# define MAP_FIXED 0
761#endif
762
763#define MMAP_MAGIC PERL_MAGIC_ext
764
765static int ecb_cold
766mmap_free (pTHX_ SV *sv, MAGIC *mg)
767{
768 int old_errno = errno;
769 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
770 errno = old_errno;
771
772 mg->mg_obj = 0; /* just in case */
773
774 SvREADONLY_off (sv);
775
776 if (SvPVX (sv) != mg->mg_ptr)
777 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
778
779 SvCUR_set (sv, 0);
780 SvPVX (sv) = 0;
781 SvOK_off (sv);
782
783 return 0;
784}
785
786static MGVTBL mmap_vtbl = {
787 0, 0, 0, 0, mmap_free
788};
789
790/*****************************************************************************/
791
792static SV *
793get_cb (SV *cb_sv)
794{
795 SvGETMAGIC (cb_sv);
796 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
797}
798
799static aio_req ecb_noinline
800dreq (SV *callback)
801{
802 SV *cb_cv;
803 aio_req req;
804 int req_pri = next_pri;
805 next_pri = EIO_PRI_DEFAULT;
806
807 cb_cv = get_cb (callback);
808
809 req = calloc (sizeof (*req), 1);
810 if (!req)
811 croak ("out of memory during eio_req allocation");
812
813 req->callback = SvREFCNT_inc (cb_cv);
814 req->pri = req_pri;
815
816 return req;
817}
818
819#define dREQ \
820 aio_req req = dreq (callback); \
821
822#define REQ_SEND \
823 PUTBACK; \
824 req_submit (req); \
825 SPAGAIN; \
826 \
827 if (GIMME_V != G_VOID) \
828 XPUSHs (req_sv (req, aio_req_stash));
829
830ecb_inline void
831req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
832{
833 if (expect_false (SvROK (path)))
834 {
835 SV *rv = SvRV (path);
836 SV *wdob;
837
838 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
720 { 839 {
721 maybe_start_thread (); 840 path = AvARRAY (rv)[1];
841 wdob = AvARRAY (rv)[0];
722 842
723 LOCK (reslock); 843 if (SvOK (wdob))
724 req = reqq_shift (&res_queue);
725
726 if (req)
727 { 844 {
728 --npending; 845 *wd = SvAIO_WD (wdob);
729 846 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
730 if (!res_queue.size)
731 {
732 /* read any signals sent by the worker threads */
733 char buf [32];
734 while (read (respipe [0], buf, 32) == 32)
735 ;
736 }
737 }
738
739 UNLOCK (reslock);
740
741 if (!req)
742 break;
743
744 --nreqs;
745
746 if (req->type == REQ_GROUP && req->size)
747 {
748 req->int1 = 1; /* mark request as delayed */
749 continue;
750 } 847 }
751 else 848 else
752 { 849 *wd = EIO_INVALID_WD;
753 req_invoke (req);
754
755 count++;
756 }
757
758 req_free (req);
759
760 if (maxreqs && !--maxreqs)
761 break;
762
763 if (max_poll_time)
764 {
765 gettimeofday (&tv_now, 0);
766
767 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768 break;
769 }
770 } 850 }
851 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
852 {
853 *wd = (aio_wd)(long)SvIVX (rv);
854 *wdsv = SvREFCNT_inc_NN (rv);
855 *ptr = ".";
856 return; /* path set to "." */
857 }
858 else
859 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
860 }
771 861
772 if (nreqs <= max_outstanding) 862 *pathsv = newSVsv (path);
863 *ptr = SvPVbyte_nolen (*pathsv);
864}
865
866static void ecb_noinline
867req_set_path1 (aio_req req, SV *path)
868{
869 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
870}
871
872static void ecb_noinline
873req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
874{
875 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
876
877 switch (SvTYPE (rv))
878 {
879 case SVt_PVIO:
880 case SVt_PVLV:
881 case SVt_PVGV:
882 req->type = type_fh;
883 req->sv1 = newSVsv (fh_or_path);
884 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773 break; 885 break;
774 886
775 poll_wait (); 887 default:
776 888 req->type = type_path;
777 ++maxreqs; 889 req_set_path1 (req, fh_or_path);
890 break;
778 } 891 }
779
780 return count;
781} 892}
782 893
783static void create_pipe () 894XS(boot_IO__AIO) ecb_cold;
784{
785 if (pipe (respipe))
786 croak ("unable to initialize result pipe");
787 895
788 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789 croak ("cannot set result pipe to nonblocking mode");
790
791 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792 croak ("cannot set result pipe to nonblocking mode");
793}
794
795/*****************************************************************************/
796/* work around various missing functions */
797
798#if !HAVE_PREADWRITE
799# define pread aio_pread
800# define pwrite aio_pwrite
801
802/*
803 * make our pread/pwrite safe against themselves, but not against
804 * normal read/write by using a mutex. slows down execution a lot,
805 * but that's your problem, not mine.
806 */
807static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810{
811 ssize_t res;
812 off_t ooffset;
813
814 LOCK (preadwritelock);
815 ooffset = lseek (fd, 0, SEEK_CUR);
816 lseek (fd, offset, SEEK_SET);
817 res = read (fd, buf, count);
818 lseek (fd, ooffset, SEEK_SET);
819 UNLOCK (preadwritelock);
820
821 return res;
822}
823
824static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825{
826 ssize_t res;
827 off_t ooffset;
828
829 LOCK (preadwritelock);
830 ooffset = lseek (fd, 0, SEEK_CUR);
831 lseek (fd, offset, SEEK_SET);
832 res = write (fd, buf, count);
833 lseek (fd, offset, SEEK_SET);
834 UNLOCK (preadwritelock);
835
836 return res;
837}
838#endif
839
840#if !HAVE_FDATASYNC
841# define fdatasync fsync
842#endif
843
844#if !HAVE_READAHEAD
845# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848{
849 dBUF;
850
851 while (count > 0)
852 {
853 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855 pread (fd, aio_buf, len, offset);
856 offset += len;
857 count -= len;
858 }
859
860 errno = 0;
861}
862
863#endif
864
865#if !HAVE_READDIR_R
866# define readdir_r aio_readdir_r
867
868static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871{
872 struct dirent *e;
873 int errorno;
874
875 LOCK (readdirlock);
876
877 e = readdir (dirp);
878 errorno = errno;
879
880 if (e)
881 {
882 *res = ent;
883 strcpy (ent->d_name, e->d_name);
884 }
885 else
886 *res = 0;
887
888 UNLOCK (readdirlock);
889
890 errno = errorno;
891 return e ? 0 : -1;
892}
893#endif
894
895/* sendfile always needs emulation */
896static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897{
898 ssize_t res;
899
900 if (!count)
901 return 0;
902
903#if HAVE_SENDFILE
904# if __linux
905 res = sendfile (ofd, ifd, &offset, count);
906
907# elif __freebsd
908 /*
909 * Of course, the freebsd sendfile is a dire hack with no thoughts
910 * wasted on making it similar to other I/O functions.
911 */
912 {
913 off_t sbytes;
914 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916 if (res < 0 && sbytes)
917 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918 res = sbytes;
919 }
920
921# elif __hpux
922 res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924# elif __solaris
925 {
926 struct sendfilevec vec;
927 size_t sbytes;
928
929 vec.sfv_fd = ifd;
930 vec.sfv_flag = 0;
931 vec.sfv_off = offset;
932 vec.sfv_len = count;
933
934 res = sendfilev (ofd, &vec, 1, &sbytes);
935
936 if (res < 0 && sbytes)
937 res = sbytes;
938 }
939
940# endif
941#else
942 res = -1;
943 errno = ENOSYS;
944#endif
945
946 if (res < 0
947 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948#if __solaris
949 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
950#endif
951 )
952 )
953 {
954 /* emulate sendfile. this is a major pain in the ass */
955 dBUF;
956
957 res = 0;
958
959 while (count)
960 {
961 ssize_t cnt;
962
963 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965 if (cnt <= 0)
966 {
967 if (cnt && !res) res = -1;
968 break;
969 }
970
971 cnt = write (ofd, aio_buf, cnt);
972
973 if (cnt <= 0)
974 {
975 if (cnt && !res) res = -1;
976 break;
977 }
978
979 offset += cnt;
980 res += cnt;
981 count -= cnt;
982 }
983 }
984
985 return res;
986}
987
988/* read a full directory */
989static void scandir_ (aio_req req, worker *self)
990{
991 DIR *dirp;
992 union
993 {
994 struct dirent d;
995 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996 } *u;
997 struct dirent *entp;
998 char *name, *names;
999 int memlen = 4096;
1000 int memofs = 0;
1001 int res = 0;
1002 int errorno;
1003
1004 LOCK (wrklock);
1005 self->dirp = dirp = opendir (req->ptr1);
1006 self->dbuf = u = malloc (sizeof (*u));
1007 req->flags |= FLAG_PTR2_FREE;
1008 req->ptr2 = names = malloc (memlen);
1009 UNLOCK (wrklock);
1010
1011 if (dirp && u && names)
1012 for (;;)
1013 {
1014 errno = 0;
1015 readdir_r (dirp, &u->d, &entp);
1016
1017 if (!entp)
1018 break;
1019
1020 name = entp->d_name;
1021
1022 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023 {
1024 int len = strlen (name) + 1;
1025
1026 res++;
1027
1028 while (memofs + len > memlen)
1029 {
1030 memlen *= 2;
1031 LOCK (wrklock);
1032 req->ptr2 = names = realloc (names, memlen);
1033 UNLOCK (wrklock);
1034
1035 if (!names)
1036 break;
1037 }
1038
1039 memcpy (names + memofs, name, len);
1040 memofs += len;
1041 }
1042 }
1043
1044 if (errno)
1045 res = -1;
1046
1047 req->result = res;
1048}
1049
1050/*****************************************************************************/
1051
1052static void *aio_proc (void *thr_arg)
1053{
1054 aio_req req;
1055 struct timespec ts;
1056 worker *self = (worker *)thr_arg;
1057
1058 /* try to distribute timeouts somewhat evenly */
1059 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060 * (1000000000UL / 1024UL);
1061
1062 for (;;)
1063 {
1064 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066 LOCK (reqlock);
1067
1068 for (;;)
1069 {
1070 self->req = req = reqq_shift (&req_queue);
1071
1072 if (req)
1073 break;
1074
1075 ++idle;
1076
1077 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078 == ETIMEDOUT)
1079 {
1080 if (idle > max_idle)
1081 {
1082 --idle;
1083 UNLOCK (reqlock);
1084 LOCK (wrklock);
1085 --started;
1086 UNLOCK (wrklock);
1087 goto quit;
1088 }
1089
1090 /* we are allowed to idle, so do so without any timeout */
1091 pthread_cond_wait (&reqwait, &reqlock);
1092 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093 }
1094
1095 --idle;
1096 }
1097
1098 --nready;
1099
1100 UNLOCK (reqlock);
1101
1102 errno = 0; /* strictly unnecessary */
1103
1104 if (!(req->flags & FLAG_CANCELLED))
1105 switch (req->type)
1106 {
1107 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118 case REQ_CLOSE: req->result = close (req->int1); break;
1119 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128 case REQ_FSYNC: req->result = fsync (req->int1); break;
1129 case REQ_READDIR: scandir_ (req, self); break;
1130
1131 case REQ_BUSY:
1132 {
1133 struct timeval tv;
1134
1135 tv.tv_sec = req->int1;
1136 tv.tv_usec = req->int2;
1137
1138 req->result = select (0, 0, 0, 0, &tv);
1139 }
1140
1141 case REQ_GROUP:
1142 case REQ_NOP:
1143 break;
1144
1145 case REQ_QUIT:
1146 goto quit;
1147
1148 default:
1149 req->result = ENOSYS;
1150 break;
1151 }
1152
1153 req->errorno = errno;
1154
1155 LOCK (reslock);
1156
1157 ++npending;
1158
1159 if (!reqq_push (&res_queue, req))
1160 /* write a dummy byte to the pipe so fh becomes ready */
1161 write (respipe [1], &respipe, 1);
1162
1163 self->req = 0;
1164 worker_clear (self);
1165
1166 UNLOCK (reslock);
1167 }
1168
1169quit:
1170 LOCK (wrklock);
1171 worker_free (self);
1172 UNLOCK (wrklock);
1173
1174 return 0;
1175}
1176
1177/*****************************************************************************/
1178
1179static void atfork_prepare (void)
1180{
1181 LOCK (wrklock);
1182 LOCK (reqlock);
1183 LOCK (reslock);
1184#if !HAVE_PREADWRITE
1185 LOCK (preadwritelock);
1186#endif
1187#if !HAVE_READDIR_R
1188 LOCK (readdirlock);
1189#endif
1190}
1191
1192static void atfork_parent (void)
1193{
1194#if !HAVE_READDIR_R
1195 UNLOCK (readdirlock);
1196#endif
1197#if !HAVE_PREADWRITE
1198 UNLOCK (preadwritelock);
1199#endif
1200 UNLOCK (reslock);
1201 UNLOCK (reqlock);
1202 UNLOCK (wrklock);
1203}
1204
1205static void atfork_child (void)
1206{
1207 aio_req prv;
1208
1209 while (prv = reqq_shift (&req_queue))
1210 req_free (prv);
1211
1212 while (prv = reqq_shift (&res_queue))
1213 req_free (prv);
1214
1215 while (wrk_first.next != &wrk_first)
1216 {
1217 worker *wrk = wrk_first.next;
1218
1219 if (wrk->req)
1220 req_free (wrk->req);
1221
1222 worker_clear (wrk);
1223 worker_free (wrk);
1224 }
1225
1226 started = 0;
1227 idle = 0;
1228 nreqs = 0;
1229 nready = 0;
1230 npending = 0;
1231
1232 close (respipe [0]);
1233 close (respipe [1]);
1234 create_pipe ();
1235
1236 atfork_parent ();
1237}
1238
1239#define dREQ \
1240 aio_req req; \
1241 int req_pri = next_pri; \
1242 next_pri = DEFAULT_PRI + PRI_BIAS; \
1243 \
1244 if (SvOK (callback) && !SvROK (callback)) \
1245 croak ("callback must be undef or of reference type"); \
1246 \
1247 Newz (0, req, 1, aio_cb); \
1248 if (!req) \
1249 croak ("out of memory during aio_req allocation"); \
1250 \
1251 req->callback = newSVsv (callback); \
1252 req->pri = req_pri
1253
1254#define REQ_SEND \
1255 req_send (req); \
1256 \
1257 if (GIMME_V != G_VOID) \
1258 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259
1260MODULE = IO::AIO PACKAGE = IO::AIO 896MODULE = IO::AIO PACKAGE = IO::AIO
1261 897
1262PROTOTYPES: ENABLE 898PROTOTYPES: ENABLE
1263 899
1264BOOT: 900BOOT:
1265{ 901{
902 static const struct {
903 const char *name;
904 IV iv;
905 } *civ, const_iv[] = {
906# define const_niv(name, value) { # name, (IV) value },
907# define const_iv(name) { # name, (IV) name },
908# define const_eio(name) { # name, (IV) EIO_ ## name },
909
910 /* you have to re-run ./gendef0 after adding/Removing any constants here */
911
912 const_iv (ENOSYS)
913 const_iv (EXDEV)
914 const_iv (EBADR)
915
916 const_iv (O_RDONLY)
917 const_iv (O_WRONLY)
918 const_iv (O_RDWR)
919 const_iv (O_CREAT)
920 const_iv (O_TRUNC)
921 const_iv (O_EXCL)
922 const_iv (O_APPEND)
923
924 const_iv (O_ASYNC)
925 const_iv (O_DIRECT)
926 const_iv (O_NOATIME)
927
928 const_iv (O_CLOEXEC)
929 const_iv (O_NOCTTY)
930 const_iv (O_NOFOLLOW)
931 const_iv (O_NONBLOCK)
932 const_iv (O_EXEC)
933 const_iv (O_SEARCH)
934 const_iv (O_DIRECTORY)
935 const_iv (O_DSYNC)
936 const_iv (O_RSYNC)
937 const_iv (O_SYNC)
938 const_iv (O_PATH)
939 const_iv (O_TMPFILE)
940 const_iv (O_TTY_INIT)
941
942 const_iv (S_IFIFO)
943 const_iv (S_IFCHR)
944 const_iv (S_IFBLK)
945 const_iv (S_IFLNK)
946 const_iv (S_IFREG)
947 const_iv (S_IFDIR)
948 const_iv (S_IFWHT)
949 const_iv (S_IFSOCK)
950 const_iv (S_IFMT)
951
952 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
953 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
954 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
955 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
956 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
957 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
958
959 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
960 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
961 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
962 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
963 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
964
965 const_iv (ST_RDONLY)
966 const_iv (ST_NOSUID)
967 const_iv (ST_NODEV)
968 const_iv (ST_NOEXEC)
969 const_iv (ST_SYNCHRONOUS)
970 const_iv (ST_MANDLOCK)
971 const_iv (ST_WRITE)
972 const_iv (ST_APPEND)
973 const_iv (ST_IMMUTABLE)
974 const_iv (ST_NOATIME)
975 const_iv (ST_NODIRATIME)
976 const_iv (ST_RELATIME)
977
978 const_iv (PROT_NONE)
979 const_iv (PROT_EXEC)
980 const_iv (PROT_READ)
981 const_iv (PROT_WRITE)
982
983 /*const_iv (MAP_FIXED)*/
984 const_iv (MAP_PRIVATE)
985 const_iv (MAP_SHARED)
986 const_iv (MAP_ANONYMOUS)
987
988 /* linuxish */
989 const_iv (MAP_HUGETLB)
990 const_iv (MAP_LOCKED)
991 const_iv (MAP_NORESERVE)
992 const_iv (MAP_POPULATE)
993 const_iv (MAP_NONBLOCK)
994
995 const_iv (FIEMAP_FLAG_SYNC)
996 const_iv (FIEMAP_FLAG_XATTR)
997 const_iv (FIEMAP_FLAGS_COMPAT)
998 const_iv (FIEMAP_EXTENT_LAST)
999 const_iv (FIEMAP_EXTENT_UNKNOWN)
1000 const_iv (FIEMAP_EXTENT_DELALLOC)
1001 const_iv (FIEMAP_EXTENT_ENCODED)
1002 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1003 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1004 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1005 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1006 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1007 const_iv (FIEMAP_EXTENT_MERGED)
1008 const_iv (FIEMAP_EXTENT_SHARED)
1009
1010 const_iv (SPLICE_F_MOVE)
1011 const_iv (SPLICE_F_NONBLOCK)
1012 const_iv (SPLICE_F_MORE)
1013 const_iv (SPLICE_F_GIFT)
1014
1015 const_iv (SEEK_DATA)
1016 const_iv (SEEK_HOLE)
1017
1018 /* libeio constants */
1019 const_eio (SEEK_SET)
1020 const_eio (SEEK_CUR)
1021 const_eio (SEEK_END)
1022
1023 const_eio (MCL_FUTURE)
1024 const_eio (MCL_CURRENT)
1025
1026 const_eio (MS_ASYNC)
1027 const_eio (MS_INVALIDATE)
1028 const_eio (MS_SYNC)
1029
1030 const_eio (MT_MODIFY)
1031
1032 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1033 const_eio (SYNC_FILE_RANGE_WRITE)
1034 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1035
1036 const_eio (FALLOC_FL_KEEP_SIZE)
1037 const_eio (FALLOC_FL_PUNCH_HOLE)
1038 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1039 const_eio (FALLOC_FL_ZERO_RANGE)
1040
1041 const_eio (READDIR_DENTS)
1042 const_eio (READDIR_DIRS_FIRST)
1043 const_eio (READDIR_STAT_ORDER)
1044 const_eio (READDIR_FOUND_UNKNOWN)
1045
1046 const_eio (DT_UNKNOWN)
1047 const_eio (DT_FIFO)
1048 const_eio (DT_CHR)
1049 const_eio (DT_DIR)
1050 const_eio (DT_BLK)
1051 const_eio (DT_REG)
1052 const_eio (DT_LNK)
1053 const_eio (DT_SOCK)
1054 const_eio (DT_WHT)
1055 };
1056
1266 HV *stash = gv_stashpv ("IO::AIO", 1); 1057 aio_stash = gv_stashpv ("IO::AIO" , 1);
1058 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1059 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1060 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1267 1061
1268 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1062 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1269 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1063 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1270 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274 1064
1275 create_pipe (); 1065 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1276 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1277}
1278 1066
1067 reinit ();
1068}
1069
1279void 1070void
1071reinit ()
1072 PROTOTYPE:
1073
1074void
1280max_poll_reqs (int nreqs) 1075max_poll_reqs (unsigned int nreqs)
1281 PROTOTYPE: $ 1076 PROTOTYPE: $
1282 CODE: 1077 CODE:
1283 max_poll_reqs = nreqs; 1078 eio_set_max_poll_reqs (nreqs);
1284 1079
1285void 1080void
1286max_poll_time (double nseconds) 1081max_poll_time (double nseconds)
1287 PROTOTYPE: $ 1082 PROTOTYPE: $
1288 CODE: 1083 CODE:
1289 max_poll_time = nseconds * AIO_TICKS; 1084 eio_set_max_poll_time (nseconds);
1290 1085
1291void 1086void
1292min_parallel (int nthreads) 1087min_parallel (unsigned int nthreads)
1293 PROTOTYPE: $
1294
1295void
1296max_parallel (int nthreads)
1297 PROTOTYPE: $
1298
1299void
1300max_idle (int nthreads)
1301 PROTOTYPE: $ 1088 PROTOTYPE: $
1302 CODE: 1089 CODE:
1303 set_max_idle (nthreads); 1090 eio_set_min_parallel (nthreads);
1304 1091
1305int 1092void
1306max_outstanding (int maxreqs) 1093max_parallel (unsigned int nthreads)
1307 PROTOTYPE: $ 1094 PROTOTYPE: $
1308 CODE: 1095 CODE:
1309 RETVAL = max_outstanding; 1096 eio_set_max_parallel (nthreads);
1097
1098void
1099max_idle (unsigned int nthreads)
1100 PROTOTYPE: $
1101 CODE:
1102 eio_set_max_idle (nthreads);
1103
1104void
1105idle_timeout (unsigned int seconds)
1106 PROTOTYPE: $
1107 CODE:
1108 eio_set_idle_timeout (seconds);
1109
1110void
1111max_outstanding (unsigned int maxreqs)
1112 PROTOTYPE: $
1113 CODE:
1310 max_outstanding = maxreqs; 1114 max_outstanding = maxreqs;
1311 OUTPUT:
1312 RETVAL
1313 1115
1314void 1116void
1315aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1117aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1316 SV8 * pathname
1317 int flags
1318 int mode
1319 SV * callback
1320 PROTOTYPE: $$$;$
1321 PPCODE: 1118 PPCODE:
1322{ 1119{
1323 dREQ; 1120 dREQ;
1324 1121
1122 req->type = EIO_WD_OPEN;
1123 req_set_path1 (req, pathname);
1124
1125 REQ_SEND;
1126}
1127
1128void
1129aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1130 PPCODE:
1131{
1132 dREQ;
1133
1325 req->type = REQ_OPEN; 1134 req->type = EIO_OPEN;
1326 req->sv1 = newSVsv (pathname); 1135 req_set_path1 (req, pathname);
1327 req->ptr1 = SvPVbyte_nolen (req->sv1);
1328 req->int1 = flags; 1136 req->int1 = flags;
1329 req->mode = mode; 1137 req->int2 = mode;
1330 1138
1331 REQ_SEND; 1139 REQ_SEND;
1332} 1140}
1333 1141
1334void 1142void
1335aio_close (fh,callback=&PL_sv_undef) 1143aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1336 SV * fh
1337 SV * callback
1338 PROTOTYPE: $;$
1339 ALIAS: 1144 ALIAS:
1340 aio_close = REQ_CLOSE
1341 aio_fsync = REQ_FSYNC 1145 aio_fsync = EIO_FSYNC
1342 aio_fdatasync = REQ_FDATASYNC 1146 aio_fdatasync = EIO_FDATASYNC
1147 aio_syncfs = EIO_SYNCFS
1343 PPCODE: 1148 PPCODE:
1344{ 1149{
1150 int fd = s_fileno_croak (fh, 0);
1345 dREQ; 1151 dREQ;
1346 1152
1347 req->type = ix; 1153 req->type = ix;
1348 req->fh = newSVsv (fh); 1154 req->sv1 = newSVsv (fh);
1349 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1155 req->int1 = fd;
1350 1156
1351 REQ_SEND (req); 1157 REQ_SEND;
1352} 1158}
1353 1159
1354void 1160void
1161aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1162 PPCODE:
1163{
1164 int fd = s_fileno_croak (fh, 0);
1165 dREQ;
1166
1167 req->type = EIO_SYNC_FILE_RANGE;
1168 req->sv1 = newSVsv (fh);
1169 req->int1 = fd;
1170 req->offs = offset;
1171 req->size = nbytes;
1172 req->int2 = flags;
1173
1174 REQ_SEND;
1175}
1176
1177void
1178aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1179 PPCODE:
1180{
1181 int fd = s_fileno_croak (fh, 0);
1182 dREQ;
1183
1184 req->type = EIO_FALLOCATE;
1185 req->sv1 = newSVsv (fh);
1186 req->int1 = fd;
1187 req->int2 = mode;
1188 req->offs = offset;
1189 req->size = len;
1190
1191 REQ_SEND;
1192}
1193
1194void
1195aio_close (SV *fh, SV *callback = &PL_sv_undef)
1196 PPCODE:
1197{
1198 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1199 int fd = s_fileno_croak (fh, 0);
1200 dREQ;
1201
1202 if (expect_false (close_fd < 0))
1203 {
1204 int pipefd [2];
1205
1206 if (
1207#ifdef _WIN32
1208 _pipe (pipefd, 1, _O_BINARY) < 0
1209#else
1210 pipe (pipefd) < 0
1211 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1212#endif
1213 || close (pipefd [1]) < 0
1214 )
1215 abort (); /*D*/
1216
1217 close_fd = pipefd [0];
1218 }
1219
1220 req->type = EIO_DUP2;
1221 req->int1 = close_fd;
1222 req->sv2 = newSVsv (fh);
1223 req->int2 = fd;
1224
1225 REQ_SEND;
1226}
1227
1228void
1229aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1230 PPCODE:
1231{
1232 int fd = s_fileno_croak (fh, 0);
1233 dREQ;
1234
1235 req->type = EIO_SEEK;
1236 req->sv1 = newSVsv (fh);
1237 req->int1 = fd;
1238 req->offs = SvVAL64 (offset);
1239 req->int2 = whence;
1240
1241 REQ_SEND;
1242}
1243
1244void
1355aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1245aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1356 SV * fh
1357 UV offset
1358 UV length
1359 SV8 * data
1360 UV dataoffset
1361 SV * callback
1362 ALIAS: 1246 ALIAS:
1363 aio_read = REQ_READ 1247 aio_read = EIO_READ
1364 aio_write = REQ_WRITE 1248 aio_write = EIO_WRITE
1365 PROTOTYPE: $$$$$;$
1366 PPCODE: 1249 PPCODE:
1367{ 1250{
1368 STRLEN svlen; 1251 STRLEN svlen;
1252 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369 char *svptr = SvPVbyte (data, svlen); 1253 char *svptr = SvPVbyte (data, svlen);
1370 1254 UV len = SvUV (length);
1371 SvUPGRADE (data, SVt_PV);
1372 SvPOK_on (data);
1373 1255
1374 if (dataoffset < 0) 1256 if (dataoffset < 0)
1375 dataoffset += svlen; 1257 dataoffset += svlen;
1376 1258
1377 if (dataoffset < 0 || dataoffset > svlen) 1259 if (dataoffset < 0 || dataoffset > svlen)
1378 croak ("data offset outside of string"); 1260 croak ("dataoffset outside of data scalar");
1379 1261
1380 if (ix == REQ_WRITE) 1262 if (ix == EIO_WRITE)
1381 { 1263 {
1382 /* write: check length and adjust. */ 1264 /* write: check length and adjust. */
1383 if (length < 0 || length + dataoffset > svlen) 1265 if (!SvOK (length) || len + dataoffset > svlen)
1384 length = svlen - dataoffset; 1266 len = svlen - dataoffset;
1385 } 1267 }
1386 else 1268 else
1387 { 1269 {
1388 /* read: grow scalar as necessary */ 1270 /* read: check type and grow scalar as necessary */
1271 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1389 svptr = SvGROW (data, length + dataoffset); 1272 svptr = sv_grow (data, len + dataoffset + 1);
1273 else if (SvCUR (data) < len + dataoffset)
1274 croak ("length + dataoffset outside of scalar, and cannot grow");
1390 } 1275 }
1391
1392 if (length < 0)
1393 croak ("length must not be negative");
1394 1276
1395 { 1277 {
1396 dREQ; 1278 dREQ;
1397 1279
1398 req->type = ix; 1280 req->type = ix;
1399 req->fh = newSVsv (fh); 1281 req->sv1 = newSVsv (fh);
1400 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1282 req->int1 = fd;
1401 : IoOFP (sv_2io (fh))); 1283 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402 req->offs = offset;
1403 req->size = length; 1284 req->size = len;
1404 req->sv1 = SvREFCNT_inc (data); 1285 req->sv2 = SvREFCNT_inc (data);
1405 req->ptr1 = (char *)svptr + dataoffset; 1286 req->ptr2 = (char *)svptr + dataoffset;
1406 req->stroffset = dataoffset; 1287 req->stroffset = dataoffset;
1407 1288
1408 if (!SvREADONLY (data)) 1289 if (!SvREADONLY (data))
1409 { 1290 {
1410 SvREADONLY_on (data); 1291 SvREADONLY_on (data);
1411 req->flags |= FLAG_SV1_RO_OFF; 1292 req->flags |= FLAG_SV2_RO_OFF;
1412 } 1293 }
1413 1294
1414 REQ_SEND; 1295 REQ_SEND;
1415 } 1296 }
1416} 1297}
1417 1298
1418void 1299void
1419aio_readlink (path,callback=&PL_sv_undef) 1300aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1420 SV8 * path 1301 ALIAS:
1421 SV * callback 1302 aio_readlink = EIO_READLINK
1422 PROTOTYPE: $$;$ 1303 aio_realpath = EIO_REALPATH
1423 PPCODE: 1304 PPCODE:
1424{ 1305{
1425 SV *data;
1426 dREQ; 1306 dREQ;
1427 1307
1428 data = newSV (NAME_MAX);
1429 SvPOK_on (data);
1430
1431 req->type = REQ_READLINK; 1308 req->type = ix;
1432 req->fh = newSVsv (path); 1309 req_set_path1 (req, pathname);
1433 req->ptr2 = SvPVbyte_nolen (req->fh);
1434 req->sv1 = data;
1435 req->ptr1 = SvPVbyte_nolen (data);
1436 1310
1437 REQ_SEND; 1311 REQ_SEND;
1438} 1312}
1439 1313
1440void 1314void
1441aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1315aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1442 SV * out_fh
1443 SV * in_fh
1444 UV in_offset
1445 UV length
1446 SV * callback
1447 PROTOTYPE: $$$$;$
1448 PPCODE: 1316 PPCODE:
1449{ 1317{
1318 int ifd = s_fileno_croak (in_fh , 0);
1319 int ofd = s_fileno_croak (out_fh, 1);
1450 dREQ; 1320 dREQ;
1451 1321
1452 req->type = REQ_SENDFILE; 1322 req->type = EIO_SENDFILE;
1453 req->fh = newSVsv (out_fh); 1323 req->sv1 = newSVsv (out_fh);
1454 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1324 req->int1 = ofd;
1455 req->sv2 = newSVsv (in_fh); 1325 req->sv2 = newSVsv (in_fh);
1456 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1326 req->int2 = ifd;
1457 req->offs = in_offset; 1327 req->offs = in_offset;
1458 req->size = length; 1328 req->size = length;
1459 1329
1460 REQ_SEND; 1330 REQ_SEND;
1461} 1331}
1462 1332
1463void 1333void
1464aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1334aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1465 SV * fh
1466 UV offset
1467 IV length
1468 SV * callback
1469 PROTOTYPE: $$$;$
1470 PPCODE: 1335 PPCODE:
1471{ 1336{
1337 int fd = s_fileno_croak (fh, 0);
1472 dREQ; 1338 dREQ;
1473 1339
1474 req->type = REQ_READAHEAD; 1340 req->type = EIO_READAHEAD;
1475 req->fh = newSVsv (fh); 1341 req->sv1 = newSVsv (fh);
1476 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1342 req->int1 = fd;
1477 req->offs = offset; 1343 req->offs = offset;
1478 req->size = length; 1344 req->size = length;
1479 1345
1480 REQ_SEND; 1346 REQ_SEND;
1481} 1347}
1482 1348
1483void 1349void
1484aio_stat (fh_or_path,callback=&PL_sv_undef) 1350aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1485 SV8 * fh_or_path
1486 SV * callback
1487 ALIAS: 1351 ALIAS:
1488 aio_stat = REQ_STAT 1352 aio_stat = EIO_STAT
1489 aio_lstat = REQ_LSTAT 1353 aio_lstat = EIO_LSTAT
1354 aio_statvfs = EIO_STATVFS
1490 PPCODE: 1355 PPCODE:
1491{ 1356{
1492 dREQ; 1357 dREQ;
1493 1358
1494 req->ptr2 = malloc (sizeof (Stat_t)); 1359 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1495 if (!req->ptr2)
1496 {
1497 req_free (req);
1498 croak ("out of memory during aio_stat statdata allocation");
1499 }
1500
1501 req->flags |= FLAG_PTR2_FREE;
1502
1503 if (SvPOK (fh_or_path))
1504 {
1505 req->type = ix;
1506 req->sv1 = newSVsv (fh_or_path);
1507 req->ptr1 = SvPVbyte_nolen (req->sv1);
1508 }
1509 else
1510 {
1511 req->type = REQ_FSTAT;
1512 req->fh = newSVsv (fh_or_path);
1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514 }
1515 1360
1516 REQ_SEND; 1361 REQ_SEND;
1517} 1362}
1518 1363
1364UV
1365major (UV dev)
1366 ALIAS:
1367 minor = 1
1368 CODE:
1369 RETVAL = ix ? major (dev) : minor (dev);
1370 OUTPUT:
1371 RETVAL
1372
1373UV
1374makedev (UV maj, UV min)
1375 CODE:
1376 RETVAL = makedev (maj, min);
1377 OUTPUT:
1378 RETVAL
1379
1519void 1380void
1381aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1382 PPCODE:
1383{
1384 dREQ;
1385
1386 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1387 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1388 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1389
1390 REQ_SEND;
1391}
1392
1393void
1394aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1395 PPCODE:
1396{
1397 dREQ;
1398
1399 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1400 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1401
1402 REQ_SEND;
1403}
1404
1405void
1406aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1407 PPCODE:
1408{
1409 dREQ;
1410
1411 req->int2 = mode;
1412 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1413
1414 REQ_SEND;
1415}
1416
1417void
1418aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1419 PPCODE:
1420{
1421 dREQ;
1422
1423 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1424 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1425 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1426
1427 REQ_SEND;
1428}
1429
1430void
1431aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1432 PPCODE:
1433{
1434 dREQ;
1435
1436 req->type = EIO_READDIR;
1437 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1438
1439 if (flags & EIO_READDIR_DENTS)
1440 req->int1 |= EIO_READDIR_CUSTOM2;
1441
1442 req_set_path1 (req, pathname);
1443
1444 REQ_SEND;
1445}
1446
1447void
1448aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1449 PPCODE:
1450{
1451 dREQ;
1452
1453 req->type = EIO_MKDIR;
1454 req->int2 = mode;
1455 req_set_path1 (req, pathname);
1456
1457 REQ_SEND;
1458}
1459
1460void
1520aio_unlink (pathname,callback=&PL_sv_undef) 1461aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1521 SV8 * pathname
1522 SV * callback
1523 ALIAS: 1462 ALIAS:
1524 aio_unlink = REQ_UNLINK 1463 aio_unlink = EIO_UNLINK
1525 aio_rmdir = REQ_RMDIR 1464 aio_rmdir = EIO_RMDIR
1526 aio_readdir = REQ_READDIR 1465 aio_readdir = EIO_READDIR
1527 PPCODE: 1466 PPCODE:
1528{ 1467{
1529 dREQ; 1468 dREQ;
1530 1469
1531 req->type = ix; 1470 req->type = ix;
1532 req->sv1 = newSVsv (pathname); 1471 req_set_path1 (req, pathname);
1533 req->ptr1 = SvPVbyte_nolen (req->sv1);
1534 1472
1535 REQ_SEND; 1473 REQ_SEND;
1536} 1474}
1537 1475
1538void 1476void
1539aio_link (oldpath,newpath,callback=&PL_sv_undef) 1477aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1540 SV8 * oldpath
1541 SV8 * newpath
1542 SV * callback
1543 ALIAS: 1478 ALIAS:
1544 aio_link = REQ_LINK 1479 aio_link = EIO_LINK
1545 aio_symlink = REQ_SYMLINK 1480 aio_symlink = EIO_SYMLINK
1546 aio_rename = REQ_RENAME 1481 aio_rename = EIO_RENAME
1547 PPCODE: 1482 PPCODE:
1548{ 1483{
1484 eio_wd wd2 = 0;
1549 dREQ; 1485 dREQ;
1550 1486
1551 req->type = ix; 1487 req->type = ix;
1552 req->fh = newSVsv (oldpath); 1488 req_set_path1 (req, oldpath);
1553 req->ptr2 = SvPVbyte_nolen (req->fh); 1489 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1554 req->sv1 = newSVsv (newpath); 1490 req->int3 = (long)wd2;
1555 req->ptr1 = SvPVbyte_nolen (req->sv1);
1556 1491
1557 REQ_SEND; 1492 REQ_SEND;
1558} 1493}
1559 1494
1560void 1495void
1561aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1496aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1562 SV8 * pathname
1563 SV * callback
1564 UV mode
1565 UV dev
1566 PPCODE: 1497 PPCODE:
1567{ 1498{
1568 dREQ; 1499 dREQ;
1569 1500
1570 req->type = REQ_MKNOD; 1501 req->type = EIO_MKNOD;
1571 req->sv1 = newSVsv (pathname);
1572 req->ptr1 = SvPVbyte_nolen (req->sv1);
1573 req->mode = (mode_t)mode; 1502 req->int2 = (mode_t)mode;
1574 req->offs = dev; 1503 req->offs = dev;
1504 req_set_path1 (req, pathname);
1575 1505
1576 REQ_SEND; 1506 REQ_SEND;
1577} 1507}
1578 1508
1579void 1509void
1510aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1511 ALIAS:
1512 aio_mtouch = EIO_MTOUCH
1513 aio_msync = EIO_MSYNC
1514 PPCODE:
1515{
1516 STRLEN svlen;
1517 char *svptr = SvPVbyte (data, svlen);
1518 UV len = SvUV (length);
1519
1520 if (offset < 0)
1521 offset += svlen;
1522
1523 if (offset < 0 || offset > svlen)
1524 croak ("offset outside of scalar");
1525
1526 if (!SvOK (length) || len + offset > svlen)
1527 len = svlen - offset;
1528
1529 {
1530 dREQ;
1531
1532 req->type = ix;
1533 req->sv2 = SvREFCNT_inc (data);
1534 req->ptr2 = (char *)svptr + offset;
1535 req->size = len;
1536 req->int1 = flags;
1537
1538 REQ_SEND;
1539 }
1540}
1541
1542void
1543aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1544 PPCODE:
1545{
1546 STRLEN svlen;
1547 char *svptr = SvPVbyte (data, svlen);
1548 UV len = SvUV (length);
1549
1550 if (offset < 0)
1551 offset += svlen;
1552
1553 if (offset < 0 || offset > svlen)
1554 croak ("offset outside of scalar");
1555
1556 if (!SvOK (length) || len + offset > svlen)
1557 len = svlen - offset;
1558
1559 {
1560 dREQ;
1561
1562 req->type = EIO_MLOCK;
1563 req->sv2 = SvREFCNT_inc (data);
1564 req->ptr2 = (char *)svptr + offset;
1565 req->size = len;
1566
1567 REQ_SEND;
1568 }
1569}
1570
1571void
1572aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1573 PPCODE:
1574{
1575 dREQ;
1576
1577 req->type = EIO_MLOCKALL;
1578 req->int1 = flags;
1579
1580 REQ_SEND;
1581}
1582
1583void
1584aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1585 PPCODE:
1586{
1587 int fd = s_fileno_croak (fh, 0);
1588 dREQ;
1589
1590 req->type = EIO_CUSTOM;
1591 req->sv1 = newSVsv (fh);
1592 req->int1 = fd;
1593
1594 req->feed = fiemap;
1595#if HAVE_FIEMAP
1596 /* keep our fingers crossed that the next two types are 64 bit */
1597 req->offs = start;
1598 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1599 req->int2 = flags;
1600 req->int3 = SvOK (count) ? SvIV (count) : -1;
1601#endif
1602
1603 REQ_SEND;
1604}
1605
1606void
1580aio_busy (delay,callback=&PL_sv_undef) 1607aio_busy (double delay, SV *callback = &PL_sv_undef)
1581 double delay
1582 SV * callback
1583 PPCODE: 1608 PPCODE:
1584{ 1609{
1585 dREQ; 1610 dREQ;
1586 1611
1587 req->type = REQ_BUSY; 1612 req->type = EIO_BUSY;
1588 req->int1 = delay < 0. ? 0 : delay; 1613 req->nv1 = delay < 0. ? 0. : delay;
1589 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590 1614
1591 REQ_SEND; 1615 REQ_SEND;
1592} 1616}
1593 1617
1594void 1618void
1595aio_group (callback=&PL_sv_undef) 1619aio_group (SV *callback = &PL_sv_undef)
1596 SV * callback
1597 PROTOTYPE: ;$
1598 PPCODE: 1620 PPCODE:
1599{ 1621{
1600 dREQ; 1622 dREQ;
1601 1623
1602 req->type = REQ_GROUP; 1624 req->type = EIO_GROUP;
1603 1625
1626 PUTBACK;
1604 req_send (req); 1627 req_submit (req);
1628 SPAGAIN;
1629
1605 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1630 XPUSHs (req_sv (req, aio_grp_stash));
1606} 1631}
1607 1632
1608void 1633void
1609aio_nop (callback=&PL_sv_undef) 1634aio_nop (SV *callback = &PL_sv_undef)
1610 SV * callback 1635 ALIAS:
1636 aio_nop = EIO_NOP
1637 aio_sync = EIO_SYNC
1611 PPCODE: 1638 PPCODE:
1612{ 1639{
1613 dREQ; 1640 dREQ;
1614 1641
1615 req->type = REQ_NOP; 1642 req->type = ix;
1616 1643
1617 REQ_SEND; 1644 REQ_SEND;
1618} 1645}
1619 1646
1620int 1647int
1621aioreq_pri (int pri = 0) 1648aioreq_pri (int pri = NO_INIT)
1622 PROTOTYPE: ;$
1623 CODE: 1649 CODE:
1624 RETVAL = next_pri - PRI_BIAS; 1650 RETVAL = next_pri;
1625 if (items > 0) 1651 if (items > 0)
1626 { 1652 {
1627 if (pri < PRI_MIN) pri = PRI_MIN; 1653 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628 if (pri > PRI_MAX) pri = PRI_MAX; 1654 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629 next_pri = pri + PRI_BIAS; 1655 next_pri = pri;
1630 } 1656 }
1631 OUTPUT: 1657 OUTPUT:
1632 RETVAL 1658 RETVAL
1633 1659
1634void 1660void
1635aioreq_nice (int nice = 0) 1661aioreq_nice (int nice = 0)
1636 CODE: 1662 CODE:
1637 nice = next_pri - nice; 1663 nice = next_pri - nice;
1638 if (nice < PRI_MIN) nice = PRI_MIN; 1664 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639 if (nice > PRI_MAX) nice = PRI_MAX; 1665 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640 next_pri = nice + PRI_BIAS; 1666 next_pri = nice;
1641 1667
1642void 1668void
1643flush () 1669flush ()
1644 PROTOTYPE:
1645 CODE: 1670 CODE:
1646 while (nreqs) 1671 while (eio_nreqs ())
1647 { 1672 {
1648 poll_wait (); 1673 poll_wait ();
1649 poll_cb (); 1674 poll_cb ();
1650 } 1675 }
1651 1676
1652int 1677int
1653poll() 1678poll ()
1654 PROTOTYPE:
1655 CODE: 1679 CODE:
1656 if (nreqs)
1657 {
1658 poll_wait (); 1680 poll_wait ();
1659 RETVAL = poll_cb (); 1681 RETVAL = poll_cb ();
1660 }
1661 else
1662 RETVAL = 0;
1663 OUTPUT: 1682 OUTPUT:
1664 RETVAL 1683 RETVAL
1665 1684
1666int 1685int
1667poll_fileno() 1686poll_fileno ()
1668 PROTOTYPE:
1669 CODE: 1687 CODE:
1670 RETVAL = respipe [0]; 1688 RETVAL = s_epipe_fd (&respipe);
1671 OUTPUT: 1689 OUTPUT:
1672 RETVAL 1690 RETVAL
1673 1691
1674int 1692int
1675poll_cb(...) 1693poll_cb (...)
1676 PROTOTYPE: 1694 PROTOTYPE:
1677 CODE: 1695 CODE:
1678 RETVAL = poll_cb (); 1696 RETVAL = poll_cb ();
1679 OUTPUT: 1697 OUTPUT:
1680 RETVAL 1698 RETVAL
1681 1699
1682void 1700void
1683poll_wait() 1701poll_wait ()
1684 PROTOTYPE:
1685 CODE: 1702 CODE:
1686 if (nreqs)
1687 poll_wait (); 1703 poll_wait ();
1688 1704
1689int 1705int
1690nreqs() 1706nreqs ()
1691 PROTOTYPE:
1692 CODE: 1707 CODE:
1693 RETVAL = nreqs; 1708 RETVAL = eio_nreqs ();
1694 OUTPUT: 1709 OUTPUT:
1695 RETVAL 1710 RETVAL
1696 1711
1697int 1712int
1698nready() 1713nready ()
1699 PROTOTYPE:
1700 CODE: 1714 CODE:
1701 RETVAL = get_nready (); 1715 RETVAL = eio_nready ();
1702 OUTPUT: 1716 OUTPUT:
1703 RETVAL 1717 RETVAL
1704 1718
1705int 1719int
1706npending() 1720npending ()
1707 PROTOTYPE:
1708 CODE: 1721 CODE:
1709 RETVAL = get_npending (); 1722 RETVAL = eio_npending ();
1710 OUTPUT: 1723 OUTPUT:
1711 RETVAL 1724 RETVAL
1712 1725
1713int 1726int
1714nthreads() 1727nthreads ()
1715 PROTOTYPE:
1716 CODE: 1728 CODE:
1717 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1729 RETVAL = eio_nthreads ();
1718 RETVAL = started;
1719 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1720 OUTPUT: 1730 OUTPUT:
1721 RETVAL 1731 RETVAL
1722 1732
1733int
1734fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1735 CODE:
1736 RETVAL = posix_fadvise (fh, offset, length, advice);
1737 OUTPUT:
1738 RETVAL
1739
1740IV
1741sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1742 CODE:
1743 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1744 OUTPUT:
1745 RETVAL
1746
1747void
1748mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1749 PPCODE:
1750 sv_unmagic (scalar, MMAP_MAGIC);
1751{
1752 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1753 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1754 if (addr == (void *)-1)
1755 XSRETURN_NO;
1756
1757 sv_force_normal (scalar);
1758
1759 /* we store the length in mg_obj, as namlen is I32 :/ */
1760 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1761 ->mg_obj = (SV *)length;
1762
1763 SvUPGRADE (scalar, SVt_PV); /* nop... */
1764
1765 if (!(prot & PROT_WRITE))
1766 SvREADONLY_on (scalar);
1767
1768 if (SvLEN (scalar))
1769 Safefree (SvPVX (scalar));
1770
1771 SvPVX (scalar) = (char *)addr;
1772 SvCUR_set (scalar, length);
1773 SvLEN_set (scalar, 0);
1774 SvPOK_only (scalar);
1775
1776 XSRETURN_YES;
1777}
1778
1779void
1780munmap (SV *scalar)
1781 CODE:
1782 sv_unmagic (scalar, MMAP_MAGIC);
1783
1784int
1785madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1786 ALIAS:
1787 mprotect = 1
1788 CODE:
1789{
1790 STRLEN svlen;
1791 void *addr = SvPVbyte (scalar, svlen);
1792 STRLEN len = SvUV (length);
1793
1794 if (offset < 0)
1795 offset += svlen;
1796
1797 if (offset < 0 || offset > svlen)
1798 croak ("offset outside of scalar");
1799
1800 if (!SvOK (length) || len + offset > svlen)
1801 len = svlen - offset;
1802
1803 addr = (void *)(((intptr_t)addr) + offset);
1804 eio_page_align (&addr, &len);
1805
1806 switch (ix)
1807 {
1808 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1809 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1810 }
1811}
1812 OUTPUT:
1813 RETVAL
1814
1815int
1816munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1817 CODE:
1818{
1819 STRLEN svlen;
1820 void *addr = SvPVbyte (scalar, svlen);
1821 size_t len = SvUV (length);
1822
1823 if (offset < 0)
1824 offset += svlen;
1825
1826 if (offset < 0 || offset > svlen)
1827 croak ("offset outside of scalar");
1828
1829 if (!SvOK (length) || len + offset > svlen)
1830 len = svlen - offset;
1831
1832 addr = (void *)(((intptr_t)addr) + offset);
1833 eio_page_align (&addr, &len);
1834#if _POSIX_MEMLOCK_RANGE
1835 RETVAL = munlock (addr, len);
1836#else
1837 RETVAL = EIO_ENOSYS ();
1838#endif
1839}
1840 OUTPUT:
1841 RETVAL
1842
1843int
1844munlockall ()
1845 CODE:
1846#if _POSIX_MEMLOCK
1847 munlockall ();
1848#else
1849 RETVAL = EIO_ENOSYS ();
1850#endif
1851 OUTPUT:
1852 RETVAL
1853
1854int
1855splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1856 CODE:
1857{
1858#if HAVE_LINUX_SPLICE
1859 loff_t off_in_, off_out_;
1860 RETVAL = splice (
1861 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1862 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1863 length, flags
1864 );
1865#else
1866 RETVAL = EIO_ENOSYS ();
1867#endif
1868}
1869 OUTPUT:
1870 RETVAL
1871
1872int
1873tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1874 CODE:
1875#if HAVE_LINUX_SPLICE
1876 RETVAL = tee (rfh, wfh, length, flags);
1877#else
1878 RETVAL = EIO_ENOSYS ();
1879#endif
1880 OUTPUT:
1881 RETVAL
1882
1883int
1884pipesize (aio_rfd rfh, int new_size = -1)
1885 PROTOTYPE: $;$
1886 CODE:
1887#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
1888 if (new_size >= 0)
1889 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
1890 else
1891 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
1892#else
1893 errno = ENOSYS;
1894 RETVAL = -1;
1895#endif
1896 OUTPUT:
1897 RETVAL
1898
1899void
1900pipe2 (int flags = 0)
1901 PROTOTYPE: ;$
1902 PPCODE:
1903{
1904 int fd[2];
1905 int res;
1906
1907 if (flags)
1908#if HAVE_PIPE2
1909 res = pipe2 (fd, flags);
1910#else
1911 res = (errno = ENOSYS, -1);
1912#endif
1913 else
1914 res = pipe (fd);
1915
1916 if (!res)
1917 {
1918 EXTEND (SP, 2);
1919 PUSHs (newmortalFH (fd[0], O_RDONLY));
1920 PUSHs (newmortalFH (fd[1], O_WRONLY));
1921 }
1922}
1923
1924void _on_next_submit (SV *cb)
1925 CODE:
1926 SvREFCNT_dec (on_next_submit);
1927 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1928
1723PROTOTYPES: DISABLE 1929PROTOTYPES: DISABLE
1930
1931MODULE = IO::AIO PACKAGE = IO::AIO::WD
1932
1933BOOT:
1934{
1935 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1936 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1937}
1938
1939void
1940DESTROY (SV *self)
1941 CODE:
1942{
1943 aio_wd wd = SvAIO_WD (self);
1944#if HAVE_AT
1945 {
1946 SV *callback = &PL_sv_undef;
1947 dREQ; /* clobbers next_pri :/ */
1948 next_pri = req->pri; /* restore next_pri */
1949 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1950 req->type = EIO_WD_CLOSE;
1951 req->wd = wd;
1952 REQ_SEND;
1953 }
1954#else
1955 eio_wd_close_sync (wd);
1956#endif
1957}
1724 1958
1725MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1959MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1726 1960
1727void 1961void
1728cancel (aio_req_ornot req) 1962cancel (aio_req_ornot req)
1729 CODE: 1963 CODE:
1730 req_cancel (req); 1964 eio_cancel (req);
1731 1965
1732void 1966void
1733cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1967cb (aio_req_ornot req, SV *callback = NO_INIT)
1734 CODE: 1968 PPCODE:
1969{
1970 if (GIMME_V != G_VOID)
1971 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1972
1973 if (items > 1)
1974 {
1975 SV *cb_cv = get_cb (callback);
1976
1735 SvREFCNT_dec (req->callback); 1977 SvREFCNT_dec (req->callback);
1736 req->callback = newSVsv (callback); 1978 req->callback = SvREFCNT_inc (cb_cv);
1979 }
1980}
1737 1981
1738MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1982MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1739 1983
1740void 1984void
1741add (aio_req grp, ...) 1985add (aio_req grp, ...)
1742 PPCODE: 1986 PPCODE:
1743{ 1987{
1744 int i; 1988 int i;
1745 aio_req req;
1746 1989
1747 if (grp->int1 == 2) 1990 if (grp->int1 == 2)
1748 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1991 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1749 1992
1750 for (i = 1; i < items; ++i ) 1993 for (i = 1; i < items; ++i )
1751 { 1994 {
1995 aio_req req;
1996
1752 if (GIMME_V != G_VOID) 1997 if (GIMME_V != G_VOID)
1753 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1998 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1754 1999
1755 req = SvAIO_REQ (ST (i)); 2000 req = SvAIO_REQ (ST (i));
1756 2001
1757 if (req) 2002 if (req)
1758 { 2003 eio_grp_add (grp, req);
1759 ++grp->size;
1760 req->grp = grp;
1761
1762 req->grp_prev = 0;
1763 req->grp_next = grp->grp_first;
1764
1765 if (grp->grp_first)
1766 grp->grp_first->grp_prev = req;
1767
1768 grp->grp_first = req;
1769 }
1770 } 2004 }
1771} 2005}
1772 2006
1773void 2007void
1774cancel_subs (aio_req_ornot req) 2008cancel_subs (aio_req_ornot req)
… …
1783 AV *av; 2017 AV *av;
1784 2018
1785 grp->errorno = errno; 2019 grp->errorno = errno;
1786 2020
1787 av = newAV (); 2021 av = newAV ();
2022 av_extend (av, items - 1);
1788 2023
1789 for (i = 1; i < items; ++i ) 2024 for (i = 1; i < items; ++i )
1790 av_push (av, newSVsv (ST (i))); 2025 av_push (av, newSVsv (ST (i)));
1791 2026
1792 SvREFCNT_dec (grp->sv1); 2027 SvREFCNT_dec (grp->sv1);
… …
1799 grp->errorno = errorno; 2034 grp->errorno = errorno;
1800 2035
1801void 2036void
1802limit (aio_req grp, int limit) 2037limit (aio_req grp, int limit)
1803 CODE: 2038 CODE:
1804 grp->int2 = limit; 2039 eio_grp_limit (grp, limit);
1805 aio_grp_feed (grp);
1806 2040
1807void 2041void
1808feed (aio_req grp, SV *callback=&PL_sv_undef) 2042feed (aio_req grp, SV *callback = &PL_sv_undef)
1809 CODE: 2043 CODE:
1810{ 2044{
1811 SvREFCNT_dec (grp->sv2); 2045 SvREFCNT_dec (grp->sv2);
1812 grp->sv2 = newSVsv (callback); 2046 grp->sv2 = newSVsv (callback);
2047 grp->feed = aio_grp_feed;
1813 2048
1814 if (grp->int2 <= 0) 2049 if (grp->int2 <= 0)
1815 grp->int2 = 2; 2050 grp->int2 = 2;
1816 2051
1817 aio_grp_feed (grp); 2052 eio_grp_limit (grp, grp->int2);
1818} 2053}
1819 2054

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