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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 2006 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC

1/* solaris */ 1#include "libeio/xthread.h"
2#define _POSIX_PTHREAD_SEMANTICS 1
3
4#if __linux && !defined(_GNU_SOURCE)
5# define _GNU_SOURCE
6#endif
7
8/* just in case */
9#define _REENTRANT 1
10 2
11#include <errno.h> 3#include <errno.h>
12 4
13#include "EXTERN.h" 5#include "EXTERN.h"
14#include "perl.h" 6#include "perl.h"
15#include "XSUB.h" 7#include "XSUB.h"
16 8
17#include "autoconf/config.h" 9#include "schmorp.h"
18
19#include <pthread.h>
20 10
21#include <stddef.h> 11#include <stddef.h>
12#include <stdlib.h>
22#include <errno.h> 13#include <errno.h>
23#include <sys/time.h>
24#include <sys/select.h>
25#include <sys/types.h> 14#include <sys/types.h>
26#include <sys/stat.h> 15#include <sys/stat.h>
27#include <limits.h> 16#include <limits.h>
28#include <unistd.h>
29#include <fcntl.h> 17#include <fcntl.h>
30#include <signal.h>
31#include <sched.h> 18#include <sched.h>
32 19
33#if HAVE_SENDFILE 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34# if __linux
35# include <sys/sendfile.h>
36# elif __freebsd
37# include <sys/socket.h>
38# include <sys/uio.h> 21# include <sys/mman.h>
39# elif __hpux 22#endif
23
24/* the incompetent fool that created musl keeps __linux__, refuses
25 * to implement any linux standard apis, and also has no way to test
26 * for his broken iplementation. don't complain to me if this fails
27 * for you.
28 */
29#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
30# include <linux/fs.h>
31# ifdef FS_IOC_FIEMAP
32# include <linux/types.h>
33# include <linux/fiemap.h>
34# define HAVE_FIEMAP 1
35# endif
36#endif
37
38/* perl namespace pollution */
39#undef VERSION
40
41/* perl stupidly overrides readdir and maybe others */
42/* with thread-unsafe versions, imagine that :( */
43#undef readdir
44#undef opendir
45#undef closedir
46
47#ifdef _WIN32
48
49 // perl overrides all those nice libc functions
50
51 #undef malloc
52 #undef free
53 #undef open
54 #undef read
55 #undef write
56 #undef send
57 #undef recv
58 #undef stat
59 #undef lstat
60 #undef fstat
61 #undef truncate
62 #undef ftruncate
63 #undef open
64 #undef link
65 #undef close
66 #undef unlink
67 #undef mkdir
68 #undef rmdir
69 #undef rename
70 #undef lseek
71 #undef opendir
72 #undef readdir
73 #undef closedir
74 #undef chmod
75 #undef fchmod
76 #undef dup
77 #undef dup2
78 #undef abort
79 #undef pipe
80
81 #define EIO_STRUCT_STAT struct _stati64
82 #define EIO_STRUCT_STATI64
83
84#else
85
40# include <sys/socket.h> 86 #include <sys/time.h>
41# elif __solaris /* not yet */
42# include <sys/sendfile.h> 87 #include <sys/select.h>
88 #include <unistd.h>
89 #include <utime.h>
90 #include <signal.h>
91
92 #define EIO_STRUCT_STAT Stat_t
93
94#endif
95
96/*****************************************************************************/
97
98#if __GNUC__ >= 3
99# define expect(expr,value) __builtin_expect ((expr),(value))
100#else
101# define expect(expr,value) (expr)
102#endif
103
104#define expect_false(expr) expect ((expr) != 0, 0)
105#define expect_true(expr) expect ((expr) != 0, 1)
106
107/*****************************************************************************/
108
109#include "libeio/config.h"
110
111#if HAVE_RLIMITS
112 #include <sys/time.h>
113 #include <sys/resource.h>
114#endif
115
116typedef SV SV8; /* byte-sv, used for argument-checking */
117typedef int aio_rfd; /* read file desriptor */
118typedef int aio_wfd; /* write file descriptor */
119
120static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
121
122#define EIO_REQ_MEMBERS \
123 SV *callback; \
124 SV *sv1, *sv2; \
125 SV *sv3, *sv4; \
126 STRLEN stroffset; \
127 SV *self;
128
129#define EIO_NO_WRAPPERS 1
130
131#include "libeio/eio.h"
132
133static int req_invoke (eio_req *req);
134#define EIO_FINISH(req) req_invoke (req)
135static void req_destroy (eio_req *grp);
136#define EIO_DESTROY(req) req_destroy (req)
137
138#include "libeio/eio.c"
139
140#if !HAVE_POSIX_FADVISE
141# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
142#endif
143
144#if !HAVE_POSIX_MADVISE
145# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
146#endif
147
148#ifndef MAP_ANONYMOUS
149# ifdef MAP_ANON
150# define MAP_ANONYMOUS MAP_ANON
43# else 151# else
44# error sendfile support requested but not available 152# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 153# endif
46#endif 154#endif
47 155
48/* number of seconds after which idle threads exit */ 156/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 157/* also provides const_iv_ and const_niv_ macros for them */
158#include "def0.h"
50 159
51/* used for struct dirent, AIX doesn't provide it */ 160#ifndef makedev
52#ifndef NAME_MAX 161# define makedev(maj,min) (((maj) << 8) | (min))
53# define NAME_MAX 4096
54#endif
55
56#ifndef PTHREAD_STACK_MIN
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif
60
61#if __ia64
62# define STACKSIZE 65536
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64# define STACKSIZE PTHREAD_STACK_MIN
65#else
66# define STACKSIZE 16384
67#endif
68
69/* wether word reads are potentially non-atomic.
70 * this is conservatice, likely most arches this runs
71 * on have atomic word read/writes.
72 */
73#ifndef WORDACCESS_UNSAFE
74# if __i386 || __x86_64
75# define WORDACCESS_UNSAFE 0
76# else
77# define WORDACCESS_UNSAFE 1
78# endif 162#endif
163#ifndef major
164# define major(dev) ((dev) >> 8)
79#endif 165#endif
166#ifndef minor
167# define minor(dev) ((dev) & 0xff)
168#endif
80 169
81/* buffer size for various temporary buffers */ 170#if PAGESIZE <= 0
82#define AIO_BUFSIZE 65536 171# define PAGESIZE sysconf (_SC_PAGESIZE)
172#endif
83 173
84#define dBUF \ 174/*****************************************************************************/
85 char *aio_buf; \ 175
86 LOCK (wrklock); \ 176static void
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 177fiemap (eio_req *req)
88 UNLOCK (wrklock); \ 178{
89 if (!aio_buf) \ 179 req->result = -1;
180
181#if HAVE_FIEMAP
182 /* assume some c99 */
183 struct fiemap *fiemap = 0;
184 size_t end_offset;
185 int count = req->int3;
186
187 req->flags |= EIO_FLAG_PTR1_FREE;
188
189 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
190 /* increase in 3.5kb steps */
191 if (count < 0)
192 count = 8;
193
194 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
195 errno = ENOMEM;
196 if (!fiemap)
90 return -1; 197 return;
91 198
92typedef SV SV8; /* byte-sv, used for argument-checking */ 199 req->ptr1 = fiemap;
93 200
94enum { 201 fiemap->fm_start = req->offs;
95 REQ_QUIT, 202 fiemap->fm_length = req->size;
96 REQ_OPEN, REQ_CLOSE, 203 fiemap->fm_flags = req->int2;
97 REQ_READ, REQ_WRITE, REQ_READAHEAD, 204 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};
107 205
108#define AIO_REQ_KLASS "IO::AIO::REQ" 206 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
109#define AIO_GRP_KLASS "IO::AIO::GRP" 207 return;
110 208
111typedef struct aio_cb 209 if (req->int3 >= 0 /* not autosizing */
112{ 210 || !fiemap->fm_mapped_extents /* no more extents */
113 struct aio_cb *volatile next; 211 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
212 goto done;
114 213
115 SV *callback, *fh; 214 /* else we have to loop -
116 SV *sv1, *sv2; 215 * it would be tempting (actually I tried that first) to just query the
117 void *ptr1, *ptr2; 216 * number of extents needed, but linux often feels like not returning all
118 off_t offs; 217 * extents, without telling us it left any out. this complicates
119 size_t size; 218 * this quite a bit.
120 ssize_t result; 219 */
121 220
122 STRLEN stroffset; 221 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 */
127 222
128 unsigned char flags; 223 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 { 224 {
199 closedir (wrk->dirp); 225 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
200 wrk->dirp = 0; 226 char scratch[3072];
201 } 227 struct fiemap *incmap = (struct fiemap *)scratch;
202 228
203 if (wrk->dbuf) 229 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
204 { 230 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
205 free (wrk->dbuf); 231 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
206 wrk->dbuf = 0; 232 incmap->fm_flags = fiemap->fm_flags;
207 } 233 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
208}
209 234
210static void worker_free (worker *wrk) 235 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; 236 return;
305 237
306 --q->size; 238 if (!incmap->fm_mapped_extents)
239 goto done;
307 240
308 for (pri = NUM_PRI; pri--; ) 241 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
309 { 242 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
310 aio_req req = q->qs[pri]; 243 errno = ENOMEM;
311
312 if (req) 244 if (!fiemap)
245 return;
246
247 req->ptr1 = fiemap;
248
249 for (count = 0; count < incmap->fm_mapped_extents; ++count)
313 { 250 {
314 if (!(q->qs[pri] = req->next)) 251 struct fiemap_extent *e = incmap->fm_extents + count;
315 q->qe[pri] = 0;
316 252
317 return req; 253 if (e->fe_logical + e->fe_length >= end_offset)
254 goto done;
255
256 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
257
258 if (e->fe_flags & FIEMAP_EXTENT_LAST)
259 goto done;
260
318 } 261 }
319 } 262 }
320 263
321 abort (); 264done:
322} 265 req->result = 0;
323 266
324static int poll_cb (); 267#else
325static void req_invoke (aio_req req); 268 errno = ENOSYS;
269#endif
270}
271
272/*****************************************************************************/
273
274enum {
275 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
276};
277
278typedef eio_req *aio_req;
279typedef eio_req *aio_req_ornot;
280typedef eio_wd aio_wd;
281
282static SV *on_next_submit;
283static int next_pri = EIO_PRI_DEFAULT;
284static int max_outstanding;
285
286static s_epipe respipe;
287
326static void req_free (aio_req req); 288static void req_destroy (aio_req req);
327static void req_cancel (aio_req req); 289static void req_cancel (aio_req req);
328 290
291static void
292want_poll (void)
293{
294 /* write a dummy byte to the pipe so fh becomes ready */
295 s_epipe_signal (&respipe);
296}
297
298static void
299done_poll (void)
300{
301 /* read any signals sent by the worker threads */
302 s_epipe_drain (&respipe);
303}
304
329/* must be called at most once */ 305/* must be called at most once */
330static SV *req_sv (aio_req req, const char *klass) 306static SV *
307req_sv (aio_req req, HV *stash)
331{ 308{
332 if (!req->self) 309 if (!req->self)
333 { 310 {
334 req->self = (SV *)newHV (); 311 req->self = (SV *)newHV ();
335 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 312 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336 } 313 }
337 314
338 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 315 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339} 316}
340 317
341static aio_req SvAIO_REQ (SV *sv) 318static SV *
319newSVaio_wd (aio_wd wd)
320{
321 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
322}
323
324static aio_req
325SvAIO_REQ (SV *sv)
342{ 326{
343 MAGIC *mg; 327 MAGIC *mg;
344 328
345 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 329 if (!SvROK (sv)
330 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
331 || (SvSTASH (SvRV (sv)) != aio_grp_stash
332 && SvSTASH (SvRV (sv)) != aio_req_stash
333 && !sv_derived_from (sv, "IO::AIO::REQ")))
346 croak ("object of class " AIO_REQ_KLASS " expected"); 334 croak ("object of class IO::AIO::REQ expected");
347 335
348 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 336 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349 337
350 return mg ? (aio_req)mg->mg_ptr : 0; 338 return mg ? (aio_req)mg->mg_ptr : 0;
351} 339}
352 340
341static aio_wd
342SvAIO_WD (SV *sv)
343{
344 if (!SvROK (sv)
345 || SvTYPE (SvRV (sv)) != SVt_PVMG
346 || SvSTASH (SvRV (sv)) != aio_wd_stash)
347 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
348
349 return (aio_wd)(long)SvIVX (SvRV (sv));
350}
351
352static SV *
353newmortalFH (int fd, int flags)
354{
355 if (fd < 0)
356 return &PL_sv_undef;
357
358 GV *gv = (GV *)sv_newmortal ();
359 char sym[64];
360 int symlen;
361
362 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
363 gv_init (gv, aio_stash, sym, symlen, 0);
364
365 symlen = snprintf (
366 sym,
367 sizeof (sym),
368 "%s&=%d",
369 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
370 fd
371 );
372
373 return do_open (gv, sym, symlen, 0, 0, 0, 0)
374 ? (SV *)gv : &PL_sv_undef;
375}
376
377static void
353static void aio_grp_feed (aio_req grp) 378aio_grp_feed (aio_req grp)
354{ 379{
355 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 380 if (grp->sv2 && SvOK (grp->sv2))
356 { 381 {
357 int old_len = grp->size;
358
359 if (grp->sv2 && SvOK (grp->sv2))
360 {
361 dSP; 382 dSP;
362 383
363 ENTER; 384 ENTER;
364 SAVETMPS; 385 SAVETMPS;
365 PUSHMARK (SP); 386 PUSHMARK (SP);
366 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 387 XPUSHs (req_sv (grp, aio_grp_stash));
367 PUTBACK; 388 PUTBACK;
368 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 389 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369 SPAGAIN; 390 SPAGAIN;
370 FREETMPS; 391 FREETMPS;
371 LEAVE; 392 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 } 393 }
382} 394}
383 395
384static void aio_grp_dec (aio_req grp) 396static void
397req_submit (eio_req *req)
385{ 398{
386 --grp->size; 399 eio_submit (req);
387 400
388 /* call feeder, if applicable */ 401 if (expect_false (on_next_submit))
389 aio_grp_feed (grp);
390
391 /* finish, if done */
392 if (!grp->size && grp->int1)
393 { 402 {
394 req_invoke (grp); 403 dSP;
395 req_free (grp); 404 SV *cb = sv_2mortal (on_next_submit);
405
406 on_next_submit = 0;
407
408 PUSHMARK (SP);
409 PUTBACK;
410 call_sv (cb, G_DISCARD | G_EVAL);
396 } 411 }
397} 412}
398 413
414static int
399static void req_invoke (aio_req req) 415req_invoke (eio_req *req)
400{ 416{
401 dSP;
402
403 if (req->flags & FLAG_SV1_RO_OFF) 417 if (req->flags & FLAG_SV2_RO_OFF)
404 SvREADONLY_off (req->sv1); 418 SvREADONLY_off (req->sv2);
405 419
406 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 420 if (!EIO_CANCELLED (req) && req->callback)
407 { 421 {
422 dSP;
423 static SV *sv_result_cache; /* caches the result integer SV */
424 SV *sv_result;
425
408 ENTER; 426 ENTER;
409 SAVETMPS; 427 SAVETMPS;
410 PUSHMARK (SP); 428 PUSHMARK (SP);
411 EXTEND (SP, 1); 429 EXTEND (SP, 1);
412 430
431 /* do not recreate the result IV from scratch each time */
432 if (expect_true (sv_result_cache))
433 {
434 sv_result = sv_result_cache; sv_result_cache = 0;
435 SvIV_set (sv_result, req->result);
436 SvIOK_only (sv_result);
437 }
438 else
439 {
440 sv_result = newSViv (req->result);
441 SvREADONLY_on (sv_result);
442 }
443
413 switch (req->type) 444 switch (req->type)
414 { 445 {
446 case EIO_WD_OPEN:
447 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
448 break;
449
415 case REQ_READDIR: 450 case EIO_READDIR:
416 { 451 {
417 SV *rv = &PL_sv_undef; 452 SV *rv = &PL_sv_undef;
418 453
419 if (req->result >= 0) 454 if (req->result >= 0)
420 { 455 {
421 int i; 456 int i;
422 char *buf = req->ptr2; 457 char *names = (char *)req->ptr2;
458 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423 AV *av = newAV (); 459 AV *av = newAV ();
424 460
425 av_extend (av, req->result - 1); 461 av_extend (av, req->result - 1);
426 462
427 for (i = 0; i < req->result; ++i) 463 for (i = 0; i < req->result; ++i)
428 { 464 {
429 SV *sv = newSVpv (buf, 0); 465 if (req->int1 & EIO_READDIR_DENTS)
466 {
467 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430 468
469 if (req->int1 & EIO_READDIR_CUSTOM2)
470 {
471 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
472 AV *avent = newAV ();
473
474 av_extend (avent, 2);
475
476 if (!sv_type [ent->type])
477 {
478 sv_type [ent->type] = newSViv (ent->type);
479 SvREADONLY_on (sv_type [ent->type]);
480 }
481
482 av_store (avent, 0, namesv);
483 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
484 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
485
486 av_store (av, i, newRV_noinc ((SV *)avent));
487 }
488 else
431 av_store (av, i, sv); 489 av_store (av, i, namesv);
490
491 ++ent;
492 }
493 else
494 {
495 SV *name = newSVpv (names, 0);
496 av_store (av, i, name);
432 buf += SvCUR (sv) + 1; 497 names += SvCUR (name) + 1;
498 }
433 } 499 }
434 500
435 rv = sv_2mortal (newRV_noinc ((SV *)av)); 501 rv = sv_2mortal (newRV_noinc ((SV *)av));
436 } 502 }
437 503
438 PUSHs (rv); 504 PUSHs (rv);
505
506 if (req->int1 & EIO_READDIR_CUSTOM1)
507 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439 } 508 }
440 break; 509 break;
441 510
442 case REQ_OPEN: 511 case EIO_OPEN:
512 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
513 break;
514
515 case EIO_STATVFS:
516 case EIO_FSTATVFS:
443 { 517 {
444 /* convert fd to fh */ 518 SV *rv = &PL_sv_undef;
445 SV *fh; 519
520#ifndef _WIN32
521 if (req->result >= 0)
522 {
523 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
524 HV *hv = newHV ();
525 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
526 * chooses to make it a struct.
527 */
528 unsigned long fsid = 0;
529 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
446 530
447 PUSHs (sv_2mortal (newSViv (req->result))); 531 rv = sv_2mortal (newRV_noinc ((SV *)hv));
448 PUTBACK;
449 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
450 SPAGAIN;
451 532
452 fh = SvREFCNT_inc (POPs); 533 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
534 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
535 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
536 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
537 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
538 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
539 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
540 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
541 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
542 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
543 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
544 }
545#endif
453 546
454 PUSHMARK (SP); 547 PUSHs (rv);
455 XPUSHs (sv_2mortal (fh));
456 } 548 }
549
457 break; 550 break;
458 551
459 case REQ_GROUP: 552 case EIO_GROUP:
460 req->int1 = 2; /* mark group as finished */ 553 req->int1 = 2; /* mark group as finished */
461 554
462 if (req->sv1) 555 if (req->sv1)
463 { 556 {
464 int i; 557 int i;
… …
468 for (i = 0; i <= AvFILL (av); ++i) 561 for (i = 0; i <= AvFILL (av); ++i)
469 PUSHs (*av_fetch (av, i, 0)); 562 PUSHs (*av_fetch (av, i, 0));
470 } 563 }
471 break; 564 break;
472 565
473 case REQ_NOP: 566 case EIO_NOP:
474 case REQ_BUSY: 567 case EIO_BUSY:
475 break; 568 break;
476 569
477 case REQ_READLINK: 570 case EIO_READLINK:
571 case EIO_REALPATH:
478 if (req->result > 0) 572 if (req->result > 0)
573 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
574 break;
575
576 case EIO_STAT:
577 case EIO_LSTAT:
578 case EIO_FSTAT:
579 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
580
581 if (!(PL_laststatval = req->result))
582 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
583 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
584
585 PUSHs (sv_result);
586 break;
587
588 case EIO_SEEK:
589 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
590 break;
591
592 case EIO_READ:
593 {
594 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
595 *SvEND (req->sv2) = 0;
596 SvPOK_only (req->sv2);
597 SvSETMAGIC (req->sv2);
598 PUSHs (sv_result);
599 }
600 break;
601
602 case EIO_CUSTOM:
603 if (req->feed == fiemap)
479 { 604 {
480 SvCUR_set (req->sv1, req->result); 605#if HAVE_FIEMAP
481 *SvEND (req->sv1) = 0;
482 PUSHs (req->sv1); 606 if (!req->result)
607 {
608 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
609
610 if (fiemap->fm_extent_count)
611 {
612 AV *av = newAV ();
613 int i;
614
615 while (fiemap->fm_mapped_extents)
616 {
617 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
618 AV *ext_av = newAV ();
619
620 av_store (ext_av, 3, newSVuv (extent->fe_flags));
621 av_store (ext_av, 2, newSVval64 (extent->fe_length));
622 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
623 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
624
625 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
626 }
627
628 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
629 }
630 else
631 {
632 SvIV_set (sv_result, fiemap->fm_mapped_extents);
633 PUSHs (sv_result);
634 }
635 }
636#endif
483 } 637 }
638 else
639 PUSHs (sv_result);
484 break; 640 break;
485 641
486 case REQ_STAT: 642 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
487 case REQ_LSTAT: 643 if (req->result > 0)
488 case REQ_FSTAT: 644 SvIV_set (sv_result, 0);
489 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 645 /* 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;
500 646
501 default: 647 default:
502 PUSHs (sv_2mortal (newSViv (req->result))); 648 PUSHs (sv_result);
503 break; 649 break;
504 } 650 }
505 651
506 errno = req->errorno; 652 errno = req->errorno;
507 653
508 PUTBACK; 654 PUTBACK;
509 call_sv (req->callback, G_VOID | G_EVAL); 655 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510 SPAGAIN; 656 SPAGAIN;
657
658 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
659 SvREFCNT_dec (sv_result);
660 else
661 sv_result_cache = sv_result;
511 662
512 FREETMPS; 663 FREETMPS;
513 LEAVE; 664 LEAVE;
665
666 PUTBACK;
514 } 667 }
515 668
516 if (req->grp) 669 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} 670}
536 671
537static void req_free (aio_req req) 672static void
673req_destroy (aio_req req)
538{ 674{
539 if (req->self) 675 if (req->self)
540 { 676 {
541 sv_unmagic (req->self, PERL_MAGIC_ext); 677 sv_unmagic (req->self, PERL_MAGIC_ext);
542 SvREFCNT_dec (req->self); 678 SvREFCNT_dec (req->self);
543 } 679 }
544 680
545 SvREFCNT_dec (req->fh);
546 SvREFCNT_dec (req->sv1); 681 SvREFCNT_dec (req->sv1);
547 SvREFCNT_dec (req->sv2); 682 SvREFCNT_dec (req->sv2);
683 SvREFCNT_dec (req->sv3);
684 SvREFCNT_dec (req->sv4);
548 SvREFCNT_dec (req->callback); 685 SvREFCNT_dec (req->callback);
549 686
550 if (req->flags & FLAG_PTR2_FREE)
551 free (req->ptr2);
552
553 Safefree (req); 687 free (req);
554} 688}
555 689
690static void
556static void req_cancel_subs (aio_req grp) 691req_cancel_subs (aio_req grp)
557{ 692{
558 aio_req sub;
559
560 if (grp->type != REQ_GROUP) 693 if (grp->type != EIO_GROUP)
561 return; 694 return;
562 695
563 SvREFCNT_dec (grp->sv2); 696 SvREFCNT_dec (grp->sv2);
564 grp->sv2 = 0; 697 grp->sv2 = 0;
565 698
566 for (sub = grp->grp_first; sub; sub = sub->grp_next) 699 eio_grp_cancel (grp);
567 req_cancel (sub);
568} 700}
569 701
570static void req_cancel (aio_req req) 702static void ecb_cold
703create_respipe (void)
571{ 704{
572 req->flags |= FLAG_CANCELLED; 705 if (s_epipe_renew (&respipe))
573 706 croak ("IO::AIO: unable to initialize result pipe");
574 req_cancel_subs (req);
575} 707}
576 708
577static void *aio_proc(void *arg); 709static void
578 710poll_wait (void)
579static void start_thread (void)
580{ 711{
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) 712 while (eio_nreqs ())
687 { 713 {
688 int size; 714 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 715
716 X_LOCK (EIO_POOL->reslock);
690 size = res_queue.size; 717 size = EIO_POOL->res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 718 X_UNLOCK (EIO_POOL->reslock);
692 719
693 if (size) 720 if (size)
694 return; 721 return;
695 722
696 maybe_start_thread (); 723 etp_maybe_start_thread (EIO_POOL);
697 724
698 FD_ZERO(&rfd); 725 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 726 }
703} 727}
704 728
705static int poll_cb () 729static int
730poll_cb (void)
706{ 731{
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 (;;) 732 for (;;)
718 { 733 {
719 for (;;) 734 int res = eio_poll ();
735
736 if (res > 0)
737 croak (0);
738
739 if (!max_outstanding || max_outstanding > eio_nreqs ())
740 return res;
741
742 poll_wait ();
743 }
744}
745
746static void ecb_cold
747reinit (void)
748{
749 create_respipe ();
750
751 if (eio_init (want_poll, done_poll) < 0)
752 croak ("IO::AIO: unable to initialise eio library");
753}
754
755/*****************************************************************************/
756
757#if !_POSIX_MAPPED_FILES
758# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
759# define munmap(addr,length) EIO_ENOSYS ()
760#endif
761
762#if !_POSIX_MEMORY_PROTECTION
763# define mprotect(addr,len,prot) EIO_ENOSYS ()
764#endif
765
766#define MMAP_MAGIC PERL_MAGIC_ext
767
768static int ecb_cold
769mmap_free (pTHX_ SV *sv, MAGIC *mg)
770{
771 int old_errno = errno;
772 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
773 errno = old_errno;
774
775 mg->mg_obj = 0; /* just in case */
776
777 SvREADONLY_off (sv);
778
779 if (SvPVX (sv) != mg->mg_ptr)
780 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
781
782 SvCUR_set (sv, 0);
783 SvPVX (sv) = 0;
784 SvOK_off (sv);
785
786 return 0;
787}
788
789static MGVTBL mmap_vtbl = {
790 0, 0, 0, 0, mmap_free
791};
792
793/*****************************************************************************/
794
795static SV *
796get_cb (SV *cb_sv)
797{
798 SvGETMAGIC (cb_sv);
799 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
800}
801
802static aio_req ecb_noinline
803dreq (SV *callback)
804{
805 SV *cb_cv;
806 aio_req req;
807 int req_pri = next_pri;
808 next_pri = EIO_PRI_DEFAULT;
809
810 cb_cv = get_cb (callback);
811
812 req = calloc (sizeof (*req), 1);
813 if (!req)
814 croak ("out of memory during eio_req allocation");
815
816 req->callback = SvREFCNT_inc (cb_cv);
817 req->pri = req_pri;
818
819 return req;
820}
821
822#define dREQ \
823 aio_req req = dreq (callback); \
824
825#define REQ_SEND \
826 PUTBACK; \
827 req_submit (req); \
828 SPAGAIN; \
829 \
830 if (GIMME_V != G_VOID) \
831 XPUSHs (req_sv (req, aio_req_stash));
832
833ecb_inline void
834req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
835{
836 if (expect_false (SvROK (path)))
837 {
838 SV *rv = SvRV (path);
839 SV *wdob;
840
841 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
720 { 842 {
721 maybe_start_thread (); 843 path = AvARRAY (rv)[1];
844 wdob = AvARRAY (rv)[0];
722 845
723 LOCK (reslock); 846 if (SvOK (wdob))
724 req = reqq_shift (&res_queue);
725
726 if (req)
727 { 847 {
728 --npending; 848 *wd = SvAIO_WD (wdob);
729 849 *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 } 850 }
751 else 851 else
752 { 852 *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 } 853 }
854 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
855 {
856 *wd = (aio_wd)(long)SvIVX (rv);
857 *wdsv = SvREFCNT_inc_NN (rv);
858 *ptr = ".";
859 return; /* path set to "." */
860 }
861 else
862 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
863 }
771 864
772 if (nreqs <= max_outstanding) 865 *pathsv = newSVsv (path);
866 *ptr = SvPVbyte_nolen (*pathsv);
867}
868
869static void ecb_noinline
870req_set_path1 (aio_req req, SV *path)
871{
872 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
873}
874
875static void ecb_noinline
876req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
877{
878 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
879
880 switch (SvTYPE (rv))
881 {
882 case SVt_PVIO:
883 case SVt_PVLV:
884 case SVt_PVGV:
885 req->type = type_fh;
886 req->sv1 = newSVsv (fh_or_path);
887 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773 break; 888 break;
774 889
775 poll_wait (); 890 default:
776 891 req->type = type_path;
777 ++maxreqs; 892 req_set_path1 (req, fh_or_path);
893 break;
778 } 894 }
779
780 return count;
781} 895}
782 896
783static void create_pipe () 897XS(boot_IO__AIO) ecb_cold;
784{
785 if (pipe (respipe))
786 croak ("unable to initialize result pipe");
787 898
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 899MODULE = IO::AIO PACKAGE = IO::AIO
1261 900
1262PROTOTYPES: ENABLE 901PROTOTYPES: ENABLE
1263 902
1264BOOT: 903BOOT:
1265{ 904{
905 static const struct {
906 const char *name;
907 IV iv;
908 } *civ, const_iv[] = {
909# define const_niv(name, value) { # name, (IV) value },
910# define const_iv(name) { # name, (IV) name },
911# define const_eio(name) { # name, (IV) EIO_ ## name },
912
913 /* you have to re-run ./gendef0 after adding/removing any constants here */
914 /* the first block can be undef if missing */
915 const_iv (ENOSYS)
916 const_iv (EXDEV)
917 const_iv (EBADR)
918
919 /* for lseek */
920 const_iv (SEEK_DATA)
921 const_iv (SEEK_HOLE)
922
923 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
924 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
925 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
926 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
927 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
928 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
929
930 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
931 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
932 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
933 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
934 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
935
936 /* the second block will be 0 when missing */
937 const_iv (O_RDONLY)
938 const_iv (O_WRONLY)
939 const_iv (O_RDWR)
940 const_iv (O_CREAT)
941 const_iv (O_TRUNC)
942 const_iv (O_EXCL)
943 const_iv (O_APPEND)
944
945 const_iv (O_ASYNC)
946 const_iv (O_DIRECT)
947 const_iv (O_NOATIME)
948
949 const_iv (O_CLOEXEC)
950 const_iv (O_NOCTTY)
951 const_iv (O_NOFOLLOW)
952 const_iv (O_NONBLOCK)
953 const_iv (O_EXEC)
954 const_iv (O_SEARCH)
955 const_iv (O_DIRECTORY)
956 const_iv (O_DSYNC)
957 const_iv (O_RSYNC)
958 const_iv (O_SYNC)
959 const_iv (O_PATH)
960 const_iv (O_TMPFILE)
961 const_iv (O_TTY_INIT)
962
963 const_iv (S_IFIFO)
964 const_iv (S_IFCHR)
965 const_iv (S_IFBLK)
966 const_iv (S_IFLNK)
967 const_iv (S_IFREG)
968 const_iv (S_IFDIR)
969 const_iv (S_IFWHT)
970 const_iv (S_IFSOCK)
971 const_iv (S_IFMT)
972
973 const_iv (ST_RDONLY)
974 const_iv (ST_NOSUID)
975 const_iv (ST_NODEV)
976 const_iv (ST_NOEXEC)
977 const_iv (ST_SYNCHRONOUS)
978 const_iv (ST_MANDLOCK)
979 const_iv (ST_WRITE)
980 const_iv (ST_APPEND)
981 const_iv (ST_IMMUTABLE)
982 const_iv (ST_NOATIME)
983 const_iv (ST_NODIRATIME)
984 const_iv (ST_RELATIME)
985
986 const_iv (PROT_NONE)
987 const_iv (PROT_EXEC)
988 const_iv (PROT_READ)
989 const_iv (PROT_WRITE)
990
991 const_iv (MAP_PRIVATE)
992 const_iv (MAP_SHARED)
993 const_iv (MAP_FIXED)
994 const_iv (MAP_ANONYMOUS)
995
996 /* linuxish */
997 const_iv (MAP_LOCKED)
998 const_iv (MAP_NORESERVE)
999 const_iv (MAP_POPULATE)
1000 const_iv (MAP_NONBLOCK)
1001 const_iv (MAP_GROWSDOWN)
1002 const_iv (MAP_32BIT)
1003 const_iv (MAP_HUGETLB)
1004 const_iv (MAP_STACK)
1005
1006 const_iv (F_DUPFD_CLOEXEC)
1007
1008 const_iv (F_OFD_GETLK)
1009 const_iv (F_OFD_SETLK)
1010 const_iv (F_OFD_GETLKW)
1011
1012 const_iv (FIFREEZE)
1013 const_iv (FITHAW)
1014 const_iv (FITRIM)
1015 const_iv (FICLONE)
1016 const_iv (FICLONERANGE)
1017 const_iv (FIDEDUPERANGE)
1018
1019 const_iv (FS_IOC_GETFLAGS)
1020 const_iv (FS_IOC_SETFLAGS)
1021 const_iv (FS_IOC_GETVERSION)
1022 const_iv (FS_IOC_SETVERSION)
1023 const_iv (FS_IOC_FIEMAP)
1024 const_iv (FS_IOC_FSGETXATTR)
1025 const_iv (FS_IOC_FSSETXATTR)
1026 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1027 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1028 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1029
1030 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1031
1032 const_iv (FS_SECRM_FL)
1033 const_iv (FS_UNRM_FL)
1034 const_iv (FS_COMPR_FL)
1035 const_iv (FS_SYNC_FL)
1036 const_iv (FS_IMMUTABLE_FL)
1037 const_iv (FS_APPEND_FL)
1038 const_iv (FS_NODUMP_FL)
1039 const_iv (FS_NOATIME_FL)
1040 const_iv (FS_DIRTY_FL)
1041 const_iv (FS_COMPRBLK_FL)
1042 const_iv (FS_NOCOMP_FL)
1043 const_iv (FS_ENCRYPT_FL)
1044 const_iv (FS_BTREE_FL)
1045 const_iv (FS_INDEX_FL)
1046 const_iv (FS_JOURNAL_DATA_FL)
1047 const_iv (FS_NOTAIL_FL)
1048 const_iv (FS_DIRSYNC_FL)
1049 const_iv (FS_TOPDIR_FL)
1050 const_iv (FS_FL_USER_MODIFIABLE)
1051
1052 const_iv (FS_XFLAG_REALTIME)
1053 const_iv (FS_XFLAG_PREALLOC)
1054 const_iv (FS_XFLAG_IMMUTABLE)
1055 const_iv (FS_XFLAG_APPEND)
1056 const_iv (FS_XFLAG_SYNC)
1057 const_iv (FS_XFLAG_NOATIME)
1058 const_iv (FS_XFLAG_NODUMP)
1059 const_iv (FS_XFLAG_RTINHERIT)
1060 const_iv (FS_XFLAG_PROJINHERIT)
1061 const_iv (FS_XFLAG_NOSYMLINKS)
1062 const_iv (FS_XFLAG_EXTSIZE)
1063 const_iv (FS_XFLAG_EXTSZINHERIT)
1064 const_iv (FS_XFLAG_NODEFRAG)
1065 const_iv (FS_XFLAG_FILESTREAM)
1066 const_iv (FS_XFLAG_DAX)
1067 const_iv (FS_XFLAG_HASATTR)
1068
1069 const_iv (FIEMAP_FLAG_SYNC)
1070 const_iv (FIEMAP_FLAG_XATTR)
1071 const_iv (FIEMAP_FLAGS_COMPAT)
1072 const_iv (FIEMAP_EXTENT_LAST)
1073 const_iv (FIEMAP_EXTENT_UNKNOWN)
1074 const_iv (FIEMAP_EXTENT_DELALLOC)
1075 const_iv (FIEMAP_EXTENT_ENCODED)
1076 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1077 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1078 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1079 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1080 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1081 const_iv (FIEMAP_EXTENT_MERGED)
1082 const_iv (FIEMAP_EXTENT_SHARED)
1083
1084 const_iv (SPLICE_F_MOVE)
1085 const_iv (SPLICE_F_NONBLOCK)
1086 const_iv (SPLICE_F_MORE)
1087 const_iv (SPLICE_F_GIFT)
1088
1089 /* these are libeio constants, and are independent of gendef0 */
1090 const_eio (SEEK_SET)
1091 const_eio (SEEK_CUR)
1092 const_eio (SEEK_END)
1093
1094 const_eio (MCL_FUTURE)
1095 const_eio (MCL_CURRENT)
1096
1097 const_eio (MS_ASYNC)
1098 const_eio (MS_INVALIDATE)
1099 const_eio (MS_SYNC)
1100
1101 const_eio (MT_MODIFY)
1102
1103 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1104 const_eio (SYNC_FILE_RANGE_WRITE)
1105 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1106
1107 const_eio (FALLOC_FL_KEEP_SIZE)
1108 const_eio (FALLOC_FL_PUNCH_HOLE)
1109 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1110 const_eio (FALLOC_FL_ZERO_RANGE)
1111 const_eio (FALLOC_FL_INSERT_RANGE)
1112 const_eio (FALLOC_FL_UNSHARE_RANGE)
1113
1114 const_eio (RENAME_NOREPLACE)
1115 const_eio (RENAME_EXCHANGE)
1116 const_eio (RENAME_WHITEOUT)
1117
1118 const_eio (READDIR_DENTS)
1119 const_eio (READDIR_DIRS_FIRST)
1120 const_eio (READDIR_STAT_ORDER)
1121 const_eio (READDIR_FOUND_UNKNOWN)
1122
1123 const_eio (DT_UNKNOWN)
1124 const_eio (DT_FIFO)
1125 const_eio (DT_CHR)
1126 const_eio (DT_DIR)
1127 const_eio (DT_BLK)
1128 const_eio (DT_REG)
1129 const_eio (DT_LNK)
1130 const_eio (DT_SOCK)
1131 const_eio (DT_WHT)
1132 };
1133
1266 HV *stash = gv_stashpv ("IO::AIO", 1); 1134 aio_stash = gv_stashpv ("IO::AIO" , 1);
1135 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1136 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1137 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1267 1138
1268 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1139 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1269 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1140 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 1141
1275 create_pipe (); 1142 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1276 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1277}
1278 1143
1144 reinit ();
1145}
1146
1279void 1147void
1148reinit ()
1149 PROTOTYPE:
1150
1151void
1280max_poll_reqs (int nreqs) 1152max_poll_reqs (unsigned int nreqs)
1281 PROTOTYPE: $ 1153 PROTOTYPE: $
1282 CODE: 1154 CODE:
1283 max_poll_reqs = nreqs; 1155 eio_set_max_poll_reqs (nreqs);
1284 1156
1285void 1157void
1286max_poll_time (double nseconds) 1158max_poll_time (double nseconds)
1287 PROTOTYPE: $ 1159 PROTOTYPE: $
1288 CODE: 1160 CODE:
1289 max_poll_time = nseconds * AIO_TICKS; 1161 eio_set_max_poll_time (nseconds);
1290 1162
1291void 1163void
1292min_parallel (int nthreads) 1164min_parallel (unsigned int nthreads)
1293 PROTOTYPE: $
1294
1295void
1296max_parallel (int nthreads)
1297 PROTOTYPE: $
1298
1299void
1300max_idle (int nthreads)
1301 PROTOTYPE: $ 1165 PROTOTYPE: $
1302 CODE: 1166 CODE:
1303 set_max_idle (nthreads); 1167 eio_set_min_parallel (nthreads);
1304 1168
1305int 1169void
1306max_outstanding (int maxreqs) 1170max_parallel (unsigned int nthreads)
1307 PROTOTYPE: $ 1171 PROTOTYPE: $
1308 CODE: 1172 CODE:
1309 RETVAL = max_outstanding; 1173 eio_set_max_parallel (nthreads);
1174
1175void
1176max_idle (unsigned int nthreads)
1177 PROTOTYPE: $
1178 CODE:
1179 eio_set_max_idle (nthreads);
1180
1181void
1182idle_timeout (unsigned int seconds)
1183 PROTOTYPE: $
1184 CODE:
1185 eio_set_idle_timeout (seconds);
1186
1187void
1188max_outstanding (unsigned int maxreqs)
1189 PROTOTYPE: $
1190 CODE:
1310 max_outstanding = maxreqs; 1191 max_outstanding = maxreqs;
1311 OUTPUT:
1312 RETVAL
1313 1192
1314void 1193void
1315aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1194aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1316 SV8 * pathname
1317 int flags
1318 int mode
1319 SV * callback
1320 PROTOTYPE: $$$;$
1321 PPCODE: 1195 PPCODE:
1322{ 1196{
1323 dREQ; 1197 dREQ;
1324 1198
1199 req->type = EIO_WD_OPEN;
1200 req_set_path1 (req, pathname);
1201
1202 REQ_SEND;
1203}
1204
1205void
1206aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1207 PPCODE:
1208{
1209 dREQ;
1210
1325 req->type = REQ_OPEN; 1211 req->type = EIO_OPEN;
1326 req->sv1 = newSVsv (pathname); 1212 req_set_path1 (req, pathname);
1327 req->ptr1 = SvPVbyte_nolen (req->sv1);
1328 req->int1 = flags; 1213 req->int1 = flags;
1329 req->mode = mode; 1214 req->int2 = mode;
1330 1215
1331 REQ_SEND; 1216 REQ_SEND;
1332} 1217}
1333 1218
1334void 1219void
1335aio_close (fh,callback=&PL_sv_undef) 1220aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1336 SV * fh
1337 SV * callback
1338 PROTOTYPE: $;$
1339 ALIAS: 1221 ALIAS:
1340 aio_close = REQ_CLOSE
1341 aio_fsync = REQ_FSYNC 1222 aio_fsync = EIO_FSYNC
1342 aio_fdatasync = REQ_FDATASYNC 1223 aio_fdatasync = EIO_FDATASYNC
1224 aio_syncfs = EIO_SYNCFS
1343 PPCODE: 1225 PPCODE:
1344{ 1226{
1227 int fd = s_fileno_croak (fh, 0);
1345 dREQ; 1228 dREQ;
1346 1229
1347 req->type = ix; 1230 req->type = ix;
1348 req->fh = newSVsv (fh); 1231 req->sv1 = newSVsv (fh);
1349 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1232 req->int1 = fd;
1350 1233
1351 REQ_SEND (req); 1234 REQ_SEND;
1352} 1235}
1353 1236
1354void 1237void
1238aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1239 PPCODE:
1240{
1241 int fd = s_fileno_croak (fh, 0);
1242 dREQ;
1243
1244 req->type = EIO_SYNC_FILE_RANGE;
1245 req->sv1 = newSVsv (fh);
1246 req->int1 = fd;
1247 req->offs = offset;
1248 req->size = nbytes;
1249 req->int2 = flags;
1250
1251 REQ_SEND;
1252}
1253
1254void
1255aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1256 PPCODE:
1257{
1258 int fd = s_fileno_croak (fh, 0);
1259 dREQ;
1260
1261 req->type = EIO_FALLOCATE;
1262 req->sv1 = newSVsv (fh);
1263 req->int1 = fd;
1264 req->int2 = mode;
1265 req->offs = offset;
1266 req->size = len;
1267
1268 REQ_SEND;
1269}
1270
1271void
1272aio_close (SV *fh, SV *callback = &PL_sv_undef)
1273 PPCODE:
1274{
1275 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1276 int fd = s_fileno_croak (fh, 0);
1277 dREQ;
1278
1279 if (expect_false (close_fd < 0))
1280 {
1281 int pipefd [2];
1282
1283 if (
1284#ifdef _WIN32
1285 _pipe (pipefd, 1, _O_BINARY) < 0
1286#else
1287 pipe (pipefd) < 0
1288 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1289#endif
1290 || close (pipefd [1]) < 0
1291 )
1292 abort (); /*D*/
1293
1294 close_fd = pipefd [0];
1295 }
1296
1297 req->type = EIO_DUP2;
1298 req->int1 = close_fd;
1299 req->sv2 = newSVsv (fh);
1300 req->int2 = fd;
1301
1302 REQ_SEND;
1303}
1304
1305void
1306aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1307 PPCODE:
1308{
1309 int fd = s_fileno_croak (fh, 0);
1310 dREQ;
1311
1312 req->type = EIO_SEEK;
1313 req->sv1 = newSVsv (fh);
1314 req->int1 = fd;
1315 req->offs = SvVAL64 (offset);
1316 req->int2 = whence;
1317
1318 REQ_SEND;
1319}
1320
1321void
1355aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1322aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1356 SV * fh
1357 UV offset
1358 UV length
1359 SV8 * data
1360 UV dataoffset
1361 SV * callback
1362 ALIAS: 1323 ALIAS:
1363 aio_read = REQ_READ 1324 aio_read = EIO_READ
1364 aio_write = REQ_WRITE 1325 aio_write = EIO_WRITE
1365 PROTOTYPE: $$$$$;$
1366 PPCODE: 1326 PPCODE:
1367{ 1327{
1368 STRLEN svlen; 1328 STRLEN svlen;
1329 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369 char *svptr = SvPVbyte (data, svlen); 1330 char *svptr = SvPVbyte (data, svlen);
1370 1331 UV len = SvUV (length);
1371 SvUPGRADE (data, SVt_PV);
1372 SvPOK_on (data);
1373 1332
1374 if (dataoffset < 0) 1333 if (dataoffset < 0)
1375 dataoffset += svlen; 1334 dataoffset += svlen;
1376 1335
1377 if (dataoffset < 0 || dataoffset > svlen) 1336 if (dataoffset < 0 || dataoffset > svlen)
1378 croak ("data offset outside of string"); 1337 croak ("dataoffset outside of data scalar");
1379 1338
1380 if (ix == REQ_WRITE) 1339 if (ix == EIO_WRITE)
1381 { 1340 {
1382 /* write: check length and adjust. */ 1341 /* write: check length and adjust. */
1383 if (length < 0 || length + dataoffset > svlen) 1342 if (!SvOK (length) || len + dataoffset > svlen)
1384 length = svlen - dataoffset; 1343 len = svlen - dataoffset;
1385 } 1344 }
1386 else 1345 else
1387 { 1346 {
1388 /* read: grow scalar as necessary */ 1347 /* read: check type and grow scalar as necessary */
1348 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1389 svptr = SvGROW (data, length + dataoffset); 1349 svptr = sv_grow (data, len + dataoffset + 1);
1350 else if (SvCUR (data) < len + dataoffset)
1351 croak ("length + dataoffset outside of scalar, and cannot grow");
1390 } 1352 }
1391
1392 if (length < 0)
1393 croak ("length must not be negative");
1394 1353
1395 { 1354 {
1396 dREQ; 1355 dREQ;
1397 1356
1398 req->type = ix; 1357 req->type = ix;
1399 req->fh = newSVsv (fh); 1358 req->sv1 = newSVsv (fh);
1400 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1359 req->int1 = fd;
1401 : IoOFP (sv_2io (fh))); 1360 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402 req->offs = offset;
1403 req->size = length; 1361 req->size = len;
1404 req->sv1 = SvREFCNT_inc (data); 1362 req->sv2 = SvREFCNT_inc (data);
1405 req->ptr1 = (char *)svptr + dataoffset; 1363 req->ptr2 = (char *)svptr + dataoffset;
1406 req->stroffset = dataoffset; 1364 req->stroffset = dataoffset;
1407 1365
1408 if (!SvREADONLY (data)) 1366 if (!SvREADONLY (data))
1409 { 1367 {
1410 SvREADONLY_on (data); 1368 SvREADONLY_on (data);
1411 req->flags |= FLAG_SV1_RO_OFF; 1369 req->flags |= FLAG_SV2_RO_OFF;
1412 } 1370 }
1413 1371
1414 REQ_SEND; 1372 REQ_SEND;
1415 } 1373 }
1416} 1374}
1417 1375
1418void 1376void
1419aio_readlink (path,callback=&PL_sv_undef) 1377aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1420 SV8 * path 1378 ALIAS:
1421 SV * callback 1379 aio_ioctl = EIO_IOCTL
1422 PROTOTYPE: $$;$ 1380 aio_fcntl = EIO_FCNTL
1423 PPCODE: 1381 PPCODE:
1424{ 1382{
1425 SV *data; 1383 int fd = s_fileno_croak (fh, 0);
1384 char *svptr;
1385
1386 if (SvPOK (arg) || !SvNIOK (arg))
1387 {
1388 STRLEN svlen;
1389 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1390#ifdef IOCPARM_LEN
1391 STRLEN need = IOCPARM_LEN (request);
1392#else
1393 STRLEN need = 256;
1394#endif
1395
1396 if (svlen < need)
1397 svptr = SvGROW (arg, need);
1398 }
1399 else
1400 svptr = (char *)SvIV (arg);
1401
1402 {
1403 dREQ;
1404
1405 req->type = ix;
1406 req->sv1 = newSVsv (fh);
1407 req->int1 = fd;
1408 req->int2 = (long)request;
1409 req->sv2 = SvREFCNT_inc (arg);
1410 req->ptr2 = svptr;
1411
1412 REQ_SEND;
1413 }
1414}
1415
1416void
1417aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1418 ALIAS:
1419 aio_readlink = EIO_READLINK
1420 aio_realpath = EIO_REALPATH
1421 PPCODE:
1422{
1426 dREQ; 1423 dREQ;
1427 1424
1428 data = newSV (NAME_MAX);
1429 SvPOK_on (data);
1430
1431 req->type = REQ_READLINK; 1425 req->type = ix;
1432 req->fh = newSVsv (path); 1426 req_set_path1 (req, pathname);
1433 req->ptr2 = SvPVbyte_nolen (req->fh);
1434 req->sv1 = data;
1435 req->ptr1 = SvPVbyte_nolen (data);
1436 1427
1437 REQ_SEND; 1428 REQ_SEND;
1438} 1429}
1439 1430
1440void 1431void
1441aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1432aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1442 SV * out_fh
1443 SV * in_fh
1444 UV in_offset
1445 UV length
1446 SV * callback
1447 PROTOTYPE: $$$$;$
1448 PPCODE: 1433 PPCODE:
1449{ 1434{
1435 int ifd = s_fileno_croak (in_fh , 0);
1436 int ofd = s_fileno_croak (out_fh, 1);
1450 dREQ; 1437 dREQ;
1451 1438
1452 req->type = REQ_SENDFILE; 1439 req->type = EIO_SENDFILE;
1453 req->fh = newSVsv (out_fh); 1440 req->sv1 = newSVsv (out_fh);
1454 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1441 req->int1 = ofd;
1455 req->sv2 = newSVsv (in_fh); 1442 req->sv2 = newSVsv (in_fh);
1456 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1443 req->int2 = ifd;
1457 req->offs = in_offset; 1444 req->offs = in_offset;
1458 req->size = length; 1445 req->size = length;
1459 1446
1460 REQ_SEND; 1447 REQ_SEND;
1461} 1448}
1462 1449
1463void 1450void
1464aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1451aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1465 SV * fh
1466 UV offset
1467 IV length
1468 SV * callback
1469 PROTOTYPE: $$$;$
1470 PPCODE: 1452 PPCODE:
1471{ 1453{
1454 int fd = s_fileno_croak (fh, 0);
1472 dREQ; 1455 dREQ;
1473 1456
1474 req->type = REQ_READAHEAD; 1457 req->type = EIO_READAHEAD;
1475 req->fh = newSVsv (fh); 1458 req->sv1 = newSVsv (fh);
1476 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1459 req->int1 = fd;
1477 req->offs = offset; 1460 req->offs = offset;
1478 req->size = length; 1461 req->size = length;
1479 1462
1480 REQ_SEND; 1463 REQ_SEND;
1481} 1464}
1482 1465
1483void 1466void
1484aio_stat (fh_or_path,callback=&PL_sv_undef) 1467aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1485 SV8 * fh_or_path
1486 SV * callback
1487 ALIAS: 1468 ALIAS:
1488 aio_stat = REQ_STAT 1469 aio_stat = EIO_STAT
1489 aio_lstat = REQ_LSTAT 1470 aio_lstat = EIO_LSTAT
1471 aio_statvfs = EIO_STATVFS
1490 PPCODE: 1472 PPCODE:
1491{ 1473{
1492 dREQ; 1474 dREQ;
1493 1475
1494 req->ptr2 = malloc (sizeof (Stat_t)); 1476 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 1477
1516 REQ_SEND; 1478 REQ_SEND;
1517} 1479}
1518 1480
1481UV
1482major (UV dev)
1483 ALIAS:
1484 minor = 1
1485 CODE:
1486 RETVAL = ix ? minor (dev) : major (dev);
1487 OUTPUT:
1488 RETVAL
1489
1490UV
1491makedev (UV maj, UV min)
1492 CODE:
1493 RETVAL = makedev (maj, min);
1494 OUTPUT:
1495 RETVAL
1496
1519void 1497void
1498aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1499 PPCODE:
1500{
1501 dREQ;
1502
1503 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1504 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1505 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1506
1507 REQ_SEND;
1508}
1509
1510void
1511aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1512 PPCODE:
1513{
1514 dREQ;
1515
1516 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1517 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1524 PPCODE:
1525{
1526 dREQ;
1527
1528 req->int2 = mode;
1529 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1530
1531 REQ_SEND;
1532}
1533
1534void
1535aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1536 PPCODE:
1537{
1538 dREQ;
1539
1540 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1541 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1542 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1543
1544 REQ_SEND;
1545}
1546
1547void
1548aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1549 PPCODE:
1550{
1551 dREQ;
1552
1553 req->type = EIO_READDIR;
1554 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1555
1556 if (flags & EIO_READDIR_DENTS)
1557 req->int1 |= EIO_READDIR_CUSTOM2;
1558
1559 req_set_path1 (req, pathname);
1560
1561 REQ_SEND;
1562}
1563
1564void
1565aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1566 PPCODE:
1567{
1568 dREQ;
1569
1570 req->type = EIO_MKDIR;
1571 req->int2 = mode;
1572 req_set_path1 (req, pathname);
1573
1574 REQ_SEND;
1575}
1576
1577void
1520aio_unlink (pathname,callback=&PL_sv_undef) 1578aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1521 SV8 * pathname
1522 SV * callback
1523 ALIAS: 1579 ALIAS:
1524 aio_unlink = REQ_UNLINK 1580 aio_unlink = EIO_UNLINK
1525 aio_rmdir = REQ_RMDIR 1581 aio_rmdir = EIO_RMDIR
1526 aio_readdir = REQ_READDIR 1582 aio_readdir = EIO_READDIR
1527 PPCODE: 1583 PPCODE:
1528{ 1584{
1529 dREQ; 1585 dREQ;
1530 1586
1531 req->type = ix; 1587 req->type = ix;
1532 req->sv1 = newSVsv (pathname); 1588 req_set_path1 (req, pathname);
1533 req->ptr1 = SvPVbyte_nolen (req->sv1);
1534 1589
1535 REQ_SEND; 1590 REQ_SEND;
1536} 1591}
1537 1592
1538void 1593void
1539aio_link (oldpath,newpath,callback=&PL_sv_undef) 1594aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1540 SV8 * oldpath
1541 SV8 * newpath
1542 SV * callback
1543 ALIAS: 1595 ALIAS:
1544 aio_link = REQ_LINK 1596 aio_link = EIO_LINK
1545 aio_symlink = REQ_SYMLINK 1597 aio_symlink = EIO_SYMLINK
1546 aio_rename = REQ_RENAME 1598 aio_rename = EIO_RENAME
1547 PPCODE: 1599 PPCODE:
1548{ 1600{
1601 eio_wd wd2 = 0;
1549 dREQ; 1602 dREQ;
1550 1603
1551 req->type = ix; 1604 req->type = ix;
1552 req->fh = newSVsv (oldpath); 1605 req_set_path1 (req, oldpath);
1553 req->ptr2 = SvPVbyte_nolen (req->fh); 1606 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1554 req->sv1 = newSVsv (newpath); 1607 req->int3 = (long)wd2;
1555 req->ptr1 = SvPVbyte_nolen (req->sv1);
1556 1608
1557 REQ_SEND; 1609 REQ_SEND;
1558} 1610}
1559 1611
1560void 1612void
1561aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1613aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1562 SV8 * pathname
1563 SV * callback
1564 UV mode
1565 UV dev
1566 PPCODE: 1614 PPCODE:
1567{ 1615{
1616 eio_wd wd2 = 0;
1568 dREQ; 1617 dREQ;
1569 1618
1570 req->type = REQ_MKNOD; 1619 req->type = EIO_RENAME;
1571 req->sv1 = newSVsv (pathname); 1620 req_set_path1 (req, oldpath);
1572 req->ptr1 = SvPVbyte_nolen (req->sv1); 1621 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1573 req->mode = (mode_t)mode; 1622 req->int2 = flags;
1574 req->offs = dev; 1623 req->int3 = (long)wd2;
1575 1624
1576 REQ_SEND; 1625 REQ_SEND;
1577} 1626}
1578 1627
1579void 1628void
1580aio_busy (delay,callback=&PL_sv_undef) 1629aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1581 double delay
1582 SV * callback
1583 PPCODE: 1630 PPCODE:
1584{ 1631{
1585 dREQ; 1632 dREQ;
1586 1633
1587 req->type = REQ_BUSY; 1634 req->type = EIO_MKNOD;
1588 req->int1 = delay < 0. ? 0 : delay; 1635 req->int2 = (mode_t)mode;
1589 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1); 1636 req->offs = dev;
1590 1637 req_set_path1 (req, pathname);
1638
1591 REQ_SEND; 1639 REQ_SEND;
1592} 1640}
1593 1641
1594void 1642void
1595aio_group (callback=&PL_sv_undef) 1643aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1596 SV * callback 1644 ALIAS:
1597 PROTOTYPE: ;$ 1645 aio_mtouch = EIO_MTOUCH
1646 aio_msync = EIO_MSYNC
1598 PPCODE: 1647 PPCODE:
1599{ 1648{
1649 STRLEN svlen;
1650 char *svptr = SvPVbyte (data, svlen);
1651 UV len = SvUV (length);
1652
1653 if (flags < 0)
1654 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1655
1656 if (offset < 0)
1657 offset += svlen;
1658
1659 if (offset < 0 || offset > svlen)
1660 croak ("offset outside of scalar");
1661
1662 if (!SvOK (length) || len + offset > svlen)
1663 len = svlen - offset;
1664
1665 {
1666 dREQ;
1667
1668 req->type = ix;
1669 req->sv2 = SvREFCNT_inc (data);
1670 req->ptr2 = (char *)svptr + offset;
1671 req->size = len;
1672 req->int1 = flags;
1673
1674 REQ_SEND;
1675 }
1676}
1677
1678void
1679aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1680 PPCODE:
1681{
1682 STRLEN svlen;
1683 char *svptr = SvPVbyte (data, svlen);
1684 UV len = SvUV (length);
1685
1686 if (offset < 0)
1687 offset += svlen;
1688
1689 if (offset < 0 || offset > svlen)
1690 croak ("offset outside of scalar");
1691
1692 if (!SvOK (length) || len + offset > svlen)
1693 len = svlen - offset;
1694
1695 {
1696 dREQ;
1697
1698 req->type = EIO_MLOCK;
1699 req->sv2 = SvREFCNT_inc (data);
1700 req->ptr2 = (char *)svptr + offset;
1701 req->size = len;
1702
1703 REQ_SEND;
1704 }
1705}
1706
1707void
1708aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1709 PPCODE:
1710{
1711 dREQ;
1712
1713 req->type = EIO_MLOCKALL;
1714 req->int1 = flags;
1715
1716 REQ_SEND;
1717}
1718
1719void
1720aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1721 PPCODE:
1722{
1723 int fd = s_fileno_croak (fh, 0);
1600 dREQ; 1724 dREQ;
1601 1725
1602 req->type = REQ_GROUP; 1726 req->type = EIO_CUSTOM;
1727 req->sv1 = newSVsv (fh);
1728 req->int1 = fd;
1603 1729
1604 req_send (req); 1730 req->feed = fiemap;
1605 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1731#if HAVE_FIEMAP
1606} 1732 /* keep our fingers crossed that the next two types are 64 bit */
1733 req->offs = start;
1734 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1735 req->int2 = flags;
1736 req->int3 = SvOK (count) ? SvIV (count) : -1;
1737#endif
1607 1738
1739 REQ_SEND;
1740}
1741
1608void 1742void
1609aio_nop (callback=&PL_sv_undef) 1743aio_busy (double delay, SV *callback = &PL_sv_undef)
1610 SV * callback
1611 PPCODE: 1744 PPCODE:
1612{ 1745{
1613 dREQ; 1746 dREQ;
1614 1747
1615 req->type = REQ_NOP; 1748 req->type = EIO_BUSY;
1749 req->nv1 = delay < 0. ? 0. : delay;
1616 1750
1617 REQ_SEND; 1751 REQ_SEND;
1618} 1752}
1619 1753
1754void
1755aio_group (SV *callback = &PL_sv_undef)
1756 PPCODE:
1757{
1758 dREQ;
1759
1760 req->type = EIO_GROUP;
1761
1762 PUTBACK;
1763 req_submit (req);
1764 SPAGAIN;
1765
1766 XPUSHs (req_sv (req, aio_grp_stash));
1767}
1768
1769void
1770aio_nop (SV *callback = &PL_sv_undef)
1771 ALIAS:
1772 aio_nop = EIO_NOP
1773 aio_sync = EIO_SYNC
1774 PPCODE:
1775{
1776 dREQ;
1777
1778 req->type = ix;
1779
1780 REQ_SEND;
1781}
1782
1620int 1783int
1621aioreq_pri (int pri = 0) 1784aioreq_pri (int pri = NO_INIT)
1622 PROTOTYPE: ;$
1623 CODE: 1785 CODE:
1624 RETVAL = next_pri - PRI_BIAS; 1786 RETVAL = next_pri;
1625 if (items > 0) 1787 if (items > 0)
1626 { 1788 {
1627 if (pri < PRI_MIN) pri = PRI_MIN; 1789 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628 if (pri > PRI_MAX) pri = PRI_MAX; 1790 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629 next_pri = pri + PRI_BIAS; 1791 next_pri = pri;
1630 } 1792 }
1631 OUTPUT: 1793 OUTPUT:
1632 RETVAL 1794 RETVAL
1633 1795
1634void 1796void
1635aioreq_nice (int nice = 0) 1797aioreq_nice (int nice = 0)
1636 CODE: 1798 CODE:
1637 nice = next_pri - nice; 1799 nice = next_pri - nice;
1638 if (nice < PRI_MIN) nice = PRI_MIN; 1800 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639 if (nice > PRI_MAX) nice = PRI_MAX; 1801 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640 next_pri = nice + PRI_BIAS; 1802 next_pri = nice;
1641 1803
1642void 1804void
1643flush () 1805flush ()
1644 PROTOTYPE:
1645 CODE: 1806 CODE:
1646 while (nreqs) 1807 while (eio_nreqs ())
1647 { 1808 {
1648 poll_wait (); 1809 poll_wait ();
1649 poll_cb (); 1810 poll_cb ();
1650 } 1811 }
1651 1812
1652int 1813int
1653poll() 1814poll ()
1654 PROTOTYPE:
1655 CODE: 1815 CODE:
1656 poll_wait (); 1816 poll_wait ();
1657 RETVAL = poll_cb (); 1817 RETVAL = poll_cb ();
1658 OUTPUT: 1818 OUTPUT:
1659 RETVAL 1819 RETVAL
1660 1820
1661int 1821int
1662poll_fileno() 1822poll_fileno ()
1663 PROTOTYPE:
1664 CODE: 1823 CODE:
1665 RETVAL = respipe [0]; 1824 RETVAL = s_epipe_fd (&respipe);
1666 OUTPUT: 1825 OUTPUT:
1667 RETVAL 1826 RETVAL
1668 1827
1669int 1828int
1670poll_cb(...) 1829poll_cb (...)
1671 PROTOTYPE: 1830 PROTOTYPE:
1672 CODE: 1831 CODE:
1673 RETVAL = poll_cb (); 1832 RETVAL = poll_cb ();
1674 OUTPUT: 1833 OUTPUT:
1675 RETVAL 1834 RETVAL
1676 1835
1677void 1836void
1678poll_wait() 1837poll_wait ()
1679 PROTOTYPE:
1680 CODE: 1838 CODE:
1681 poll_wait (); 1839 poll_wait ();
1682 1840
1683int 1841int
1684nreqs() 1842nreqs ()
1685 PROTOTYPE:
1686 CODE: 1843 CODE:
1687 RETVAL = nreqs; 1844 RETVAL = eio_nreqs ();
1688 OUTPUT: 1845 OUTPUT:
1689 RETVAL 1846 RETVAL
1690 1847
1691int 1848int
1692nready() 1849nready ()
1693 PROTOTYPE:
1694 CODE: 1850 CODE:
1695 RETVAL = get_nready (); 1851 RETVAL = eio_nready ();
1696 OUTPUT: 1852 OUTPUT:
1697 RETVAL 1853 RETVAL
1698 1854
1699int 1855int
1700npending() 1856npending ()
1701 PROTOTYPE:
1702 CODE: 1857 CODE:
1703 RETVAL = get_npending (); 1858 RETVAL = eio_npending ();
1704 OUTPUT: 1859 OUTPUT:
1705 RETVAL 1860 RETVAL
1706 1861
1707int 1862int
1708nthreads() 1863nthreads ()
1709 PROTOTYPE:
1710 CODE: 1864 CODE:
1711 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1865 RETVAL = eio_nthreads ();
1712 RETVAL = started;
1713 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714 OUTPUT: 1866 OUTPUT:
1715 RETVAL 1867 RETVAL
1716 1868
1869int
1870fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1871 CODE:
1872 RETVAL = posix_fadvise (fh, offset, length, advice);
1873 OUTPUT:
1874 RETVAL
1875
1876IV
1877sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1878 CODE:
1879 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1880 OUTPUT:
1881 RETVAL
1882
1883void
1884mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1885 PPCODE:
1886 sv_unmagic (scalar, MMAP_MAGIC);
1887{
1888 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1889 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1890 if (addr == (void *)-1)
1891 XSRETURN_NO;
1892
1893 sv_force_normal (scalar);
1894
1895 /* we store the length in mg_obj, as namlen is I32 :/ */
1896 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1897 ->mg_obj = (SV *)length;
1898
1899 SvUPGRADE (scalar, SVt_PV); /* nop... */
1900
1901 if (!(prot & PROT_WRITE))
1902 SvREADONLY_on (scalar);
1903
1904 if (SvLEN (scalar))
1905 Safefree (SvPVX (scalar));
1906
1907 SvPVX (scalar) = (char *)addr;
1908 SvCUR_set (scalar, length);
1909 SvLEN_set (scalar, 0);
1910 SvPOK_only (scalar);
1911
1912 XSRETURN_YES;
1913}
1914
1915void
1916munmap (SV *scalar)
1917 CODE:
1918 sv_unmagic (scalar, MMAP_MAGIC);
1919
1920int
1921madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1922 ALIAS:
1923 mprotect = 1
1924 CODE:
1925{
1926 STRLEN svlen;
1927 void *addr = SvPVbyte (scalar, svlen);
1928 STRLEN len = SvUV (length);
1929
1930 if (offset < 0)
1931 offset += svlen;
1932
1933 if (offset < 0 || offset > svlen)
1934 croak ("offset outside of scalar");
1935
1936 if (!SvOK (length) || len + offset > svlen)
1937 len = svlen - offset;
1938
1939 addr = (void *)(((intptr_t)addr) + offset);
1940 eio_page_align (&addr, &len);
1941
1942 switch (ix)
1943 {
1944 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1945 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1946 }
1947}
1948 OUTPUT:
1949 RETVAL
1950
1951int
1952munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
1953 CODE:
1954{
1955 STRLEN svlen;
1956 void *addr = SvPVbyte (scalar, svlen);
1957 size_t len = SvUV (length);
1958
1959 if (offset < 0)
1960 offset += svlen;
1961
1962 if (offset < 0 || offset > svlen)
1963 croak ("offset outside of scalar");
1964
1965 if (!SvOK (length) || len + offset > svlen)
1966 len = svlen - offset;
1967
1968 addr = (void *)(((intptr_t)addr) + offset);
1969 eio_page_align (&addr, &len);
1970#if _POSIX_MEMLOCK_RANGE
1971 RETVAL = munlock (addr, len);
1972#else
1973 RETVAL = EIO_ENOSYS ();
1974#endif
1975}
1976 OUTPUT:
1977 RETVAL
1978
1979int
1980munlockall ()
1981 CODE:
1982#if _POSIX_MEMLOCK
1983 munlockall ();
1984#else
1985 RETVAL = EIO_ENOSYS ();
1986#endif
1987 OUTPUT:
1988 RETVAL
1989
1990int
1991splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1992 CODE:
1993{
1994#if HAVE_LINUX_SPLICE
1995 loff_t off_in_, off_out_;
1996 RETVAL = splice (
1997 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1998 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1999 length, flags
2000 );
2001#else
2002 RETVAL = EIO_ENOSYS ();
2003#endif
2004}
2005 OUTPUT:
2006 RETVAL
2007
2008int
2009tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2010 CODE:
2011#if HAVE_LINUX_SPLICE
2012 RETVAL = tee (rfh, wfh, length, flags);
2013#else
2014 RETVAL = EIO_ENOSYS ();
2015#endif
2016 OUTPUT:
2017 RETVAL
2018
2019int
2020pipesize (aio_rfd rfh, int new_size = -1)
2021 PROTOTYPE: $;$
2022 CODE:
2023#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2024 if (new_size >= 0)
2025 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2026 else
2027 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2028#else
2029 errno = ENOSYS;
2030 RETVAL = -1;
2031#endif
2032 OUTPUT:
2033 RETVAL
2034
2035void
2036pipe2 (int flags = 0)
2037 PROTOTYPE: ;$
2038 PPCODE:
2039{
2040 int fd[2];
2041 int res;
2042
2043 if (flags)
2044#if HAVE_PIPE2
2045 res = pipe2 (fd, flags);
2046#else
2047 res = (errno = ENOSYS, -1);
2048#endif
2049 else
2050 res = pipe (fd);
2051
2052 if (!res)
2053 {
2054 EXTEND (SP, 2);
2055 PUSHs (newmortalFH (fd[0], O_RDONLY));
2056 PUSHs (newmortalFH (fd[1], O_WRONLY));
2057 }
2058}
2059
2060UV
2061get_fdlimit ()
2062 CODE:
2063#if HAVE_RLIMITS
2064 struct rlimit rl;
2065 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2066 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2067#endif
2068 XSRETURN_UNDEF;
2069 OUTPUT:
2070 RETVAL
2071
2072void
2073min_fdlimit (UV limit = 0x7fffffffU)
2074 CODE:
2075{
2076#if HAVE_RLIMITS
2077 struct rlimit rl;
2078 rlim_t orig_rlim_max;
2079 UV bit;
2080
2081 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2082 goto fail;
2083
2084 if (rl.rlim_cur == RLIM_INFINITY)
2085 XSRETURN_YES;
2086
2087 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2088
2089 if (rl.rlim_cur < limit)
2090 {
2091 rl.rlim_cur = limit;
2092
2093 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2094 rl.rlim_max = rl.rlim_cur;
2095 }
2096
2097 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2098 XSRETURN_YES;
2099
2100 if (errno == EPERM)
2101 {
2102 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2103 /* our limit overflows a system-wide limit */
2104 /* try an adaptive algorithm, but do not lower the hardlimit */
2105 rl.rlim_max = 0;
2106 for (bit = 0x40000000U; bit; bit >>= 1)
2107 {
2108 rl.rlim_max |= bit;
2109 rl.rlim_cur = rl.rlim_max;
2110
2111 /* nevr decrease the hard limit */
2112 if (rl.rlim_max < orig_rlim_max)
2113 break;
2114
2115 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2116 rl.rlim_max &= ~bit; /* too high, remove bit again */
2117 }
2118
2119 /* now, raise the soft limit to the max permitted */
2120 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2121 {
2122 rl.rlim_cur = rl.rlim_max;
2123 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2124 errno = EPERM;
2125 }
2126 }
2127#endif
2128 fail:
2129 XSRETURN_UNDEF;
2130}
2131
2132void _on_next_submit (SV *cb)
2133 CODE:
2134 SvREFCNT_dec (on_next_submit);
2135 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2136
1717PROTOTYPES: DISABLE 2137PROTOTYPES: DISABLE
2138
2139MODULE = IO::AIO PACKAGE = IO::AIO::WD
2140
2141BOOT:
2142{
2143 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2144 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2145}
2146
2147void
2148DESTROY (SV *self)
2149 CODE:
2150{
2151 aio_wd wd = SvAIO_WD (self);
2152#if HAVE_AT
2153 {
2154 SV *callback = &PL_sv_undef;
2155 dREQ; /* clobbers next_pri :/ */
2156 next_pri = req->pri; /* restore next_pri */
2157 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2158 req->type = EIO_WD_CLOSE;
2159 req->wd = wd;
2160 REQ_SEND;
2161 }
2162#else
2163 eio_wd_close_sync (wd);
2164#endif
2165}
1718 2166
1719MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2167MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720 2168
1721void 2169void
1722cancel (aio_req_ornot req) 2170cancel (aio_req_ornot req)
1723 CODE: 2171 CODE:
1724 req_cancel (req); 2172 eio_cancel (req);
1725 2173
1726void 2174void
1727cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2175cb (aio_req_ornot req, SV *callback = NO_INIT)
1728 CODE: 2176 PPCODE:
2177{
2178 if (GIMME_V != G_VOID)
2179 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2180
2181 if (items > 1)
2182 {
2183 SV *cb_cv = get_cb (callback);
2184
1729 SvREFCNT_dec (req->callback); 2185 SvREFCNT_dec (req->callback);
1730 req->callback = newSVsv (callback); 2186 req->callback = SvREFCNT_inc (cb_cv);
2187 }
2188}
1731 2189
1732MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2190MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733 2191
1734void 2192void
1735add (aio_req grp, ...) 2193add (aio_req grp, ...)
1736 PPCODE: 2194 PPCODE:
1737{ 2195{
1738 int i; 2196 int i;
1739 aio_req req;
1740 2197
1741 if (grp->int1 == 2) 2198 if (grp->int1 == 2)
1742 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2199 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743 2200
1744 for (i = 1; i < items; ++i ) 2201 for (i = 1; i < items; ++i )
1745 { 2202 {
2203 aio_req req;
2204
1746 if (GIMME_V != G_VOID) 2205 if (GIMME_V != G_VOID)
1747 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2206 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748 2207
1749 req = SvAIO_REQ (ST (i)); 2208 req = SvAIO_REQ (ST (i));
1750 2209
1751 if (req) 2210 if (req)
1752 { 2211 eio_grp_add (grp, req);
1753 ++grp->size;
1754 req->grp = grp;
1755
1756 req->grp_prev = 0;
1757 req->grp_next = grp->grp_first;
1758
1759 if (grp->grp_first)
1760 grp->grp_first->grp_prev = req;
1761
1762 grp->grp_first = req;
1763 }
1764 } 2212 }
1765} 2213}
1766 2214
1767void 2215void
1768cancel_subs (aio_req_ornot req) 2216cancel_subs (aio_req_ornot req)
… …
1777 AV *av; 2225 AV *av;
1778 2226
1779 grp->errorno = errno; 2227 grp->errorno = errno;
1780 2228
1781 av = newAV (); 2229 av = newAV ();
2230 av_extend (av, items - 1);
1782 2231
1783 for (i = 1; i < items; ++i ) 2232 for (i = 1; i < items; ++i )
1784 av_push (av, newSVsv (ST (i))); 2233 av_push (av, newSVsv (ST (i)));
1785 2234
1786 SvREFCNT_dec (grp->sv1); 2235 SvREFCNT_dec (grp->sv1);
… …
1793 grp->errorno = errorno; 2242 grp->errorno = errorno;
1794 2243
1795void 2244void
1796limit (aio_req grp, int limit) 2245limit (aio_req grp, int limit)
1797 CODE: 2246 CODE:
1798 grp->int2 = limit; 2247 eio_grp_limit (grp, limit);
1799 aio_grp_feed (grp);
1800 2248
1801void 2249void
1802feed (aio_req grp, SV *callback=&PL_sv_undef) 2250feed (aio_req grp, SV *callback = &PL_sv_undef)
1803 CODE: 2251 CODE:
1804{ 2252{
1805 SvREFCNT_dec (grp->sv2); 2253 SvREFCNT_dec (grp->sv2);
1806 grp->sv2 = newSVsv (callback); 2254 grp->sv2 = newSVsv (callback);
2255 grp->feed = aio_grp_feed;
1807 2256
1808 if (grp->int2 <= 0) 2257 if (grp->int2 <= 0)
1809 grp->int2 = 2; 2258 grp->int2 = 2;
1810 2259
1811 aio_grp_feed (grp); 2260 eio_grp_limit (grp, grp->int2);
1812} 2261}
1813 2262

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