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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.87 by root, Mon Oct 30 23:42:27 2006 UTC vs.
Revision 1.219 by root, Fri Jul 27 18:43:25 2012 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
21# include <sys/mman.h>
22#endif
23
34# if __linux 24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/types.h>
28# include <linux/fiemap.h>
29# define HAVE_FIEMAP 1
30# endif
31#endif
32
33/* perl namespace pollution */
34#undef VERSION
35
36/* perl stupidly overrides readdir and maybe others */
37/* with thread-unsafe versions, imagine that :( */
38#undef readdir
39#undef opendir
40#undef closedir
41
42#ifdef _WIN32
43
44 // perl overrides all those nice libc functions
45
46 #undef malloc
47 #undef free
48 #undef open
49 #undef read
50 #undef write
51 #undef send
52 #undef recv
53 #undef stat
54 #undef lstat
55 #undef fstat
56 #undef truncate
57 #undef ftruncate
58 #undef open
59 #undef link
60 #undef close
61 #undef unlink
62 #undef mkdir
63 #undef rmdir
64 #undef rename
65 #undef lseek
66 #undef opendir
67 #undef readdir
68 #undef closedir
69 #undef chmod
70 #undef fchmod
71 #undef dup
72 #undef dup2
73 #undef abort
74 #undef pipe
75
76 #define EIO_STRUCT_STAT struct _stati64
77 #define EIO_STRUCT_STATI64
78
79#else
80
81 #include <sys/time.h>
35# include <sys/sendfile.h> 82 #include <sys/select.h>
36# elif __freebsd 83 #include <unistd.h>
37# include <sys/socket.h> 84 #include <utime.h>
38# include <sys/uio.h> 85 #include <signal.h>
39# elif __hpux 86
40# include <sys/socket.h> 87 #define EIO_STRUCT_STAT Stat_t
41# elif __solaris /* not yet */ 88
42# include <sys/sendfile.h> 89#endif
90
91/*****************************************************************************/
92
93#if __GNUC__ >= 3
94# define expect(expr,value) __builtin_expect ((expr),(value))
95#else
96# define expect(expr,value) (expr)
97#endif
98
99#define expect_false(expr) expect ((expr) != 0, 0)
100#define expect_true(expr) expect ((expr) != 0, 1)
101
102/*****************************************************************************/
103
104typedef SV SV8; /* byte-sv, used for argument-checking */
105typedef int aio_rfd; /* read file desriptor */
106typedef int aio_wfd; /* write file descriptor */
107
108static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
109
110#define EIO_REQ_MEMBERS \
111 SV *callback; \
112 SV *sv1, *sv2; \
113 SV *sv3, *sv4; \
114 STRLEN stroffset; \
115 SV *self;
116
117#define EIO_NO_WRAPPERS 1
118
119#include "libeio/config.h"
120#include "libeio/eio.h"
121
122static int req_invoke (eio_req *req);
123#define EIO_FINISH(req) req_invoke (req)
124static void req_destroy (eio_req *grp);
125#define EIO_DESTROY(req) req_destroy (req)
126
127#include "libeio/eio.c"
128
129#if !HAVE_POSIX_FADVISE
130# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
131#endif
132
133#if !HAVE_POSIX_MADVISE
134# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
135#endif
136
137#ifndef MAP_ANONYMOUS
138# ifdef MAP_ANON
139# define MAP_ANONYMOUS MAP_ANON
43# else 140# else
44# error sendfile support requested but not available 141# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45# endif 142# endif
46#endif 143#endif
47 144
48/* number of seconds after which idle threads exit */ 145/* defines all sorts of constants to 0 unless they are already defined */
49#define IDLE_TIMEOUT 10 146#include "def0.h"
50 147
51/* used for struct dirent, AIX doesn't provide it */ 148#ifndef makedev
52#ifndef NAME_MAX 149# define makedev(maj,min) (((maj) << 8) | (min))
53# define NAME_MAX 4096
54#endif 150#endif
55 151#ifndef major
56#ifndef PTHREAD_STACK_MIN 152# define major(dev) ((dev) >> 8)
57/* care for broken platforms, e.g. windows */
58# define PTHREAD_STACK_MIN 16384
59#endif 153#endif
154#ifndef minor
155# define minor(dev) ((dev) & 0xff)
156#endif
60 157
61#if __ia64 158#ifndef PAGESIZE
62# define STACKSIZE 65536 159# define PAGESIZE sysconf (_SC_PAGESIZE)
63#elif __i386 || __x86_64 /* 16k is unreasonably high :( */ 160#endif
64# define STACKSIZE PTHREAD_STACK_MIN 161
162/*****************************************************************************/
163
164static void
165fiemap (eio_req *req)
166{
167 req->result = -1;
168
169#if HAVE_FIEMAP
170 int count = req->int3;
171
172 /* heuristic: first try with 72 extents if we don't know how many, */
173 /* as most files have (hopefully) fewer than this many extents */
174 /* in fact, most should have <= 2, so the 72 below is probably overkill */
175 if (count < 0)
176 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
177
178 for (;;)
179 {
180 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
181 errno = ENOMEM;
182 if (!fiemap)
183 return;
184
185 req->ptr1 = fiemap;
186 req->flags |= EIO_FLAG_PTR1_FREE;
187
188 fiemap->fm_start = req->offs;
189 fiemap->fm_length = req->size;
190 fiemap->fm_flags = req->int2;
191 fiemap->fm_extent_count = count;
192
193 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
194 return;
195
196 if (req->int3 >= 0)
197 break; /* when not autosizing we are done */
198
199 if (fiemap->fm_mapped_extents < count)
200 /* either autosizing succeeded,
201 * or the file had no extents
202 * or we luckily had enough space */
203 break;
204
205 /* some kernels overwrite fm_length, so just reset everything */
206 fiemap->fm_start = req->offs;
207 fiemap->fm_length = req->size;
208 fiemap->fm_flags = req->int2;
209 fiemap->fm_extent_count = 0;
210
211 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
212 return;
213
214 /* to work around a kernel bug, we allocate one more */
215 count = fiemap->fm_mapped_extents + 1;
216
217 free (fiemap);
218 }
219
220 req->result = 0;
221
65#else 222#else
66# define STACKSIZE 16384 223 errno = ENOSYS;
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 224#endif
79#endif 225}
80 226
81/* buffer size for various temporary buffers */ 227/*****************************************************************************/
82#define AIO_BUFSIZE 65536
83
84#define dBUF \
85 char *aio_buf; \
86 LOCK (wrklock); \
87 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88 UNLOCK (wrklock); \
89 if (!aio_buf) \
90 return -1;
91 228
92enum { 229enum {
93 REQ_QUIT, 230 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94 REQ_OPEN, REQ_CLOSE,
95 REQ_READ, REQ_WRITE, REQ_READAHEAD,
96 REQ_SENDFILE,
97 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98 REQ_FSYNC, REQ_FDATASYNC,
99 REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100 REQ_MKNOD, REQ_READDIR,
101 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102 REQ_GROUP, REQ_NOP,
103 REQ_BUSY,
104}; 231};
105 232
106#define AIO_REQ_KLASS "IO::AIO::REQ"
107#define AIO_GRP_KLASS "IO::AIO::GRP"
108
109typedef struct aio_cb
110{
111 struct aio_cb *volatile next;
112
113 SV *callback, *fh;
114 SV *sv1, *sv2;
115 void *ptr1, *ptr2;
116 off_t offs;
117 size_t size;
118 ssize_t result;
119
120 STRLEN stroffset;
121 int type;
122 int int1, int2;
123 int errorno;
124 mode_t mode; /* open */
125
126 unsigned char flags;
127 unsigned char pri;
128
129 SV *self; /* the perl counterpart of this request, if any */
130 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
131} aio_cb;
132
133enum {
134 FLAG_CANCELLED = 0x01,
135 FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
136 FLAG_PTR2_FREE = 0x80, /* need free(ptr2) */
137};
138
139typedef aio_cb *aio_req; 233typedef eio_req *aio_req;
140typedef aio_cb *aio_req_ornot; 234typedef eio_req *aio_req_ornot;
235typedef eio_wd aio_wd;
141 236
142enum { 237static SV *on_next_submit;
143 PRI_MIN = -4, 238static int next_pri = EIO_PRI_DEFAULT;
144 PRI_MAX = 4, 239static int max_outstanding;
145 240
146 DEFAULT_PRI = 0, 241static s_epipe respipe;
147 PRI_BIAS = -PRI_MIN,
148 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149};
150 242
151#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153static unsigned int max_poll_time = 0;
154static unsigned int max_poll_reqs = 0;
155
156/* calculcate time difference in ~1/AIO_TICKS of a second */
157static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158{
159 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
161}
162
163static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165static unsigned int started, idle, wanted;
166
167#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169#else
170# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171#endif
172
173#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176/* worker threads management */
177static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179typedef struct worker {
180 /* locked by wrklock */
181 struct worker *prev, *next;
182
183 pthread_t tid;
184
185 /* locked by reslock, reqlock or wrklock */
186 aio_req req; /* currently processed request */
187 void *dbuf;
188 DIR *dirp;
189} worker;
190
191static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193static void worker_clear (worker *wrk)
194{
195 if (wrk->dirp)
196 {
197 closedir (wrk->dirp);
198 wrk->dirp = 0;
199 }
200
201 if (wrk->dbuf)
202 {
203 free (wrk->dbuf);
204 wrk->dbuf = 0;
205 }
206}
207
208static void worker_free (worker *wrk)
209{
210 wrk->next->prev = wrk->prev;
211 wrk->prev->next = wrk->next;
212
213 free (wrk);
214}
215
216static volatile unsigned int nreqs, nready, npending;
217static volatile unsigned int max_idle = 4;
218static volatile unsigned int max_outstanding = 0xffffffff;
219static int respipe [2];
220
221static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225#if WORDACCESS_UNSAFE
226
227static unsigned int get_nready ()
228{
229 unsigned int retval;
230
231 LOCK (reqlock);
232 retval = nready;
233 UNLOCK (reqlock);
234
235 return retval;
236}
237
238static unsigned int get_npending ()
239{
240 unsigned int retval;
241
242 LOCK (reslock);
243 retval = npending;
244 UNLOCK (reslock);
245
246 return retval;
247}
248
249static unsigned int get_nthreads ()
250{
251 unsigned int retval;
252
253 LOCK (wrklock);
254 retval = started;
255 UNLOCK (wrklock);
256
257 return retval;
258}
259
260#else
261
262# define get_nready() nready
263# define get_npending() npending
264# define get_nthreads() started
265
266#endif
267
268/*
269 * a somewhat faster data structure might be nice, but
270 * with 8 priorities this actually needs <20 insns
271 * per shift, the most expensive operation.
272 */
273typedef struct {
274 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275 int size;
276} reqq;
277
278static reqq req_queue;
279static reqq res_queue;
280
281int reqq_push (reqq *q, aio_req req)
282{
283 int pri = req->pri;
284 req->next = 0;
285
286 if (q->qe[pri])
287 {
288 q->qe[pri]->next = req;
289 q->qe[pri] = req;
290 }
291 else
292 q->qe[pri] = q->qs[pri] = req;
293
294 return q->size++;
295}
296
297aio_req reqq_shift (reqq *q)
298{
299 int pri;
300
301 if (!q->size)
302 return 0;
303
304 --q->size;
305
306 for (pri = NUM_PRI; pri--; )
307 {
308 aio_req req = q->qs[pri];
309
310 if (req)
311 {
312 if (!(q->qs[pri] = req->next))
313 q->qe[pri] = 0;
314
315 return req;
316 }
317 }
318
319 abort ();
320}
321
322static int poll_cb ();
323static void req_invoke (aio_req req);
324static void req_free (aio_req req); 243static void req_destroy (aio_req req);
325static void req_cancel (aio_req req); 244static void req_cancel (aio_req req);
326 245
246static void
247want_poll (void)
248{
249 /* write a dummy byte to the pipe so fh becomes ready */
250 s_epipe_signal (&respipe);
251}
252
253static void
254done_poll (void)
255{
256 /* read any signals sent by the worker threads */
257 s_epipe_drain (&respipe);
258}
259
327/* must be called at most once */ 260/* must be called at most once */
328static SV *req_sv (aio_req req, const char *klass) 261static SV *
262req_sv (aio_req req, HV *stash)
329{ 263{
330 if (!req->self) 264 if (!req->self)
331 { 265 {
332 req->self = (SV *)newHV (); 266 req->self = (SV *)newHV ();
333 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 267 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334 } 268 }
335 269
336 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 270 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337} 271}
338 272
339static aio_req SvAIO_REQ (SV *sv) 273static SV *
274newSVaio_wd (aio_wd wd)
275{
276 return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
277}
278
279static aio_req
280SvAIO_REQ (SV *sv)
340{ 281{
341 MAGIC *mg; 282 MAGIC *mg;
342 283
343 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 284 if (!SvROK (sv)
285 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
286 || (SvSTASH (SvRV (sv)) != aio_grp_stash
287 && SvSTASH (SvRV (sv)) != aio_req_stash
288 && !sv_derived_from (sv, "IO::AIO::REQ")))
344 croak ("object of class " AIO_REQ_KLASS " expected"); 289 croak ("object of class IO::AIO::REQ expected");
345 290
346 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 291 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347 292
348 return mg ? (aio_req)mg->mg_ptr : 0; 293 return mg ? (aio_req)mg->mg_ptr : 0;
349} 294}
350 295
296static aio_wd
297SvAIO_WD (SV *sv)
298{
299 if (!SvROK (sv)
300 || SvTYPE (SvRV (sv)) != SVt_PVMG
301 || SvSTASH (SvRV (sv)) != aio_wd_stash)
302 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
303
304 return (aio_wd)(long)SvIVX (SvRV (sv));
305}
306
307static void
351static void aio_grp_feed (aio_req grp) 308aio_grp_feed (aio_req grp)
352{ 309{
353 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED)) 310 if (grp->sv2 && SvOK (grp->sv2))
354 { 311 {
355 int old_len = grp->size;
356
357 if (grp->sv2 && SvOK (grp->sv2))
358 {
359 dSP; 312 dSP;
360 313
361 ENTER; 314 ENTER;
362 SAVETMPS; 315 SAVETMPS;
363 PUSHMARK (SP); 316 PUSHMARK (SP);
364 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 317 XPUSHs (req_sv (grp, aio_grp_stash));
365 PUTBACK; 318 PUTBACK;
366 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 319 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367 SPAGAIN; 320 SPAGAIN;
368 FREETMPS; 321 FREETMPS;
369 LEAVE; 322 LEAVE;
370 }
371
372 /* stop if no progress has been made */
373 if (old_len == grp->size)
374 {
375 SvREFCNT_dec (grp->sv2);
376 grp->sv2 = 0;
377 break;
378 }
379 } 323 }
380} 324}
381 325
382static void aio_grp_dec (aio_req grp) 326static void
327req_submit (eio_req *req)
383{ 328{
384 --grp->size; 329 eio_submit (req);
385 330
386 /* call feeder, if applicable */ 331 if (expect_false (on_next_submit))
387 aio_grp_feed (grp);
388
389 /* finish, if done */
390 if (!grp->size && grp->int1)
391 { 332 {
392 req_invoke (grp); 333 dSP;
393 req_free (grp); 334 SV *cb = sv_2mortal (on_next_submit);
335
336 on_next_submit = 0;
337
338 PUSHMARK (SP);
339 PUTBACK;
340 call_sv (cb, G_DISCARD | G_EVAL);
394 } 341 }
395} 342}
396 343
344static int
397static void req_invoke (aio_req req) 345req_invoke (eio_req *req)
398{ 346{
399 dSP;
400
401 if (req->flags & FLAG_SV1_RO_OFF) 347 if (req->flags & FLAG_SV2_RO_OFF)
402 SvREADONLY_off (req->sv1); 348 SvREADONLY_off (req->sv2);
403 349
404 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 350 if (!EIO_CANCELLED (req) && req->callback)
405 { 351 {
352 dSP;
353 static SV *sv_result_cache; /* caches the result integer SV */
354 SV *sv_result;
355
406 ENTER; 356 ENTER;
407 SAVETMPS; 357 SAVETMPS;
408 PUSHMARK (SP); 358 PUSHMARK (SP);
409 EXTEND (SP, 1); 359 EXTEND (SP, 1);
410 360
361 /* do not recreate the result IV from scratch each time */
362 if (expect_true (sv_result_cache))
363 {
364 sv_result = sv_result_cache; sv_result_cache = 0;
365 SvIV_set (sv_result, req->result);
366 SvIOK_only (sv_result);
367 }
368 else
369 {
370 sv_result = newSViv (req->result);
371 SvREADONLY_on (sv_result);
372 }
373
411 switch (req->type) 374 switch (req->type)
412 { 375 {
376 case EIO_WD_OPEN:
377 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
378 break;
379
413 case REQ_READDIR: 380 case EIO_READDIR:
414 { 381 {
415 SV *rv = &PL_sv_undef; 382 SV *rv = &PL_sv_undef;
416 383
417 if (req->result >= 0) 384 if (req->result >= 0)
418 { 385 {
419 int i; 386 int i;
420 char *buf = req->ptr2; 387 char *names = (char *)req->ptr2;
388 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
421 AV *av = newAV (); 389 AV *av = newAV ();
422 390
423 av_extend (av, req->result - 1); 391 av_extend (av, req->result - 1);
424 392
425 for (i = 0; i < req->result; ++i) 393 for (i = 0; i < req->result; ++i)
426 { 394 {
427 SV *sv = newSVpv (buf, 0); 395 if (req->int1 & EIO_READDIR_DENTS)
396 {
397 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
428 398
399 if (req->int1 & EIO_READDIR_CUSTOM2)
400 {
401 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
402 AV *avent = newAV ();
403
404 av_extend (avent, 2);
405
406 if (!sv_type [ent->type])
407 {
408 sv_type [ent->type] = newSViv (ent->type);
409 SvREADONLY_on (sv_type [ent->type]);
410 }
411
412 av_store (avent, 0, namesv);
413 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
414 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
415
416 av_store (av, i, newRV_noinc ((SV *)avent));
417 }
418 else
429 av_store (av, i, sv); 419 av_store (av, i, namesv);
420
421 ++ent;
422 }
423 else
424 {
425 SV *name = newSVpv (names, 0);
426 av_store (av, i, name);
430 buf += SvCUR (sv) + 1; 427 names += SvCUR (name) + 1;
428 }
431 } 429 }
432 430
433 rv = sv_2mortal (newRV_noinc ((SV *)av)); 431 rv = sv_2mortal (newRV_noinc ((SV *)av));
434 } 432 }
435 433
436 PUSHs (rv); 434 PUSHs (rv);
435
436 if (req->int1 & EIO_READDIR_CUSTOM1)
437 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
437 } 438 }
438 break; 439 break;
439 440
440 case REQ_OPEN: 441 case EIO_OPEN:
441 { 442 {
442 /* convert fd to fh */ 443 /* convert fd to fh */
443 SV *fh; 444 SV *fh = &PL_sv_undef;
444 445
445 PUSHs (sv_2mortal (newSViv (req->result))); 446 if (req->result >= 0)
446 PUTBACK; 447 {
447 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); 448 GV *gv = (GV *)sv_newmortal ();
448 SPAGAIN; 449 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
450 char sym [64];
451 int symlen;
452
453 symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
454 gv_init (gv, aio_stash, sym, symlen, 0);
449 455
450 fh = SvREFCNT_inc (POPs); 456 symlen = snprintf (
457 sym,
458 sizeof (sym),
459 "%s&=%d",
460 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
461 (int)req->result
462 );
451 463
464 if (do_open (gv, sym, symlen, 0, 0, 0, 0))
465 fh = (SV *)gv;
466 }
467
452 PUSHMARK (SP); 468 PUSHs (fh);
453 XPUSHs (sv_2mortal (fh));
454 } 469 }
455 break; 470 break;
456 471
472 case EIO_STATVFS:
473 case EIO_FSTATVFS:
474 {
475 SV *rv = &PL_sv_undef;
476
477#ifndef _WIN32
478 if (req->result >= 0)
479 {
480 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
481 HV *hv = newHV ();
482
483 rv = sv_2mortal (newRV_noinc ((SV *)hv));
484
485 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
486 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
487 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
488 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
489 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
490 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
491 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
492 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
493 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
494 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
495 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
496 }
497#endif
498
499 PUSHs (rv);
500 }
501
502 break;
503
457 case REQ_GROUP: 504 case EIO_GROUP:
458 req->int1 = 2; /* mark group as finished */ 505 req->int1 = 2; /* mark group as finished */
459 506
460 if (req->sv1) 507 if (req->sv1)
461 { 508 {
462 int i; 509 int i;
… …
466 for (i = 0; i <= AvFILL (av); ++i) 513 for (i = 0; i <= AvFILL (av); ++i)
467 PUSHs (*av_fetch (av, i, 0)); 514 PUSHs (*av_fetch (av, i, 0));
468 } 515 }
469 break; 516 break;
470 517
471 case REQ_NOP: 518 case EIO_NOP:
472 case REQ_BUSY: 519 case EIO_BUSY:
473 break; 520 break;
474 521
475 case REQ_READLINK: 522 case EIO_READLINK:
523 case EIO_REALPATH:
476 if (req->result > 0) 524 if (req->result > 0)
525 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
526 break;
527
528 case EIO_STAT:
529 case EIO_LSTAT:
530 case EIO_FSTAT:
531 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
532
533 if (!(PL_laststatval = req->result))
534 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
535 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
536
537 PUSHs (sv_result);
538 break;
539
540 case EIO_SEEK:
541 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
542 break;
543
544 case EIO_READ:
545 {
546 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
547 *SvEND (req->sv2) = 0;
548 SvPOK_only (req->sv2);
549 SvSETMAGIC (req->sv2);
550 PUSHs (sv_result);
551 }
552 break;
553
554 case EIO_CUSTOM:
555 if (req->feed == fiemap)
477 { 556 {
478 SvCUR_set (req->sv1, req->result); 557#if HAVE_FIEMAP
479 *SvEND (req->sv1) = 0;
480 PUSHs (req->sv1); 558 if (!req->result)
559 {
560 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
561
562 if (fiemap->fm_extent_count)
563 {
564 AV *av = newAV ();
565 int i;
566
567 while (fiemap->fm_mapped_extents)
568 {
569 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
570 AV *ext_av = newAV ();
571
572 av_store (ext_av, 3, newSVuv (extent->fe_flags));
573 av_store (ext_av, 2, newSVval64 (extent->fe_length));
574 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
575 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
576
577 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
578 }
579
580 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
581 }
582 else
583 {
584 SvIV_set (sv_result, fiemap->fm_mapped_extents);
585 PUSHs (sv_result);
586 }
587 }
588#endif
481 } 589 }
590 else
591 PUSHs (sv_result);
482 break; 592 break;
483 593
484 case REQ_STAT: 594 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
485 case REQ_LSTAT: 595 if (req->result > 0)
486 case REQ_FSTAT: 596 SvIV_set (sv_result, 0);
487 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 597 /* FALLTHROUGH */
488 PL_laststatval = req->result;
489 PL_statcache = *(Stat_t *)(req->ptr2);
490 PUSHs (sv_2mortal (newSViv (req->result)));
491 break;
492
493 case REQ_READ:
494 SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
495 *SvEND (req->sv1) = 0;
496 PUSHs (sv_2mortal (newSViv (req->result)));
497 break;
498 598
499 default: 599 default:
500 PUSHs (sv_2mortal (newSViv (req->result))); 600 PUSHs (sv_result);
501 break; 601 break;
502 } 602 }
503 603
504 errno = req->errorno; 604 errno = req->errorno;
505 605
506 PUTBACK; 606 PUTBACK;
507 call_sv (req->callback, G_VOID | G_EVAL); 607 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
508 SPAGAIN; 608 SPAGAIN;
609
610 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
611 SvREFCNT_dec (sv_result);
612 else
613 sv_result_cache = sv_result;
509 614
510 FREETMPS; 615 FREETMPS;
511 LEAVE; 616 LEAVE;
617
618 PUTBACK;
512 } 619 }
513 620
514 if (req->grp) 621 return !!SvTRUE (ERRSV);
515 {
516 aio_req grp = req->grp;
517
518 /* unlink request */
519 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
520 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
521
522 if (grp->grp_first == req)
523 grp->grp_first = req->grp_next;
524
525 aio_grp_dec (grp);
526 }
527
528 if (SvTRUE (ERRSV))
529 {
530 req_free (req);
531 croak (0);
532 }
533} 622}
534 623
535static void req_free (aio_req req) 624static void
625req_destroy (aio_req req)
536{ 626{
537 if (req->self) 627 if (req->self)
538 { 628 {
539 sv_unmagic (req->self, PERL_MAGIC_ext); 629 sv_unmagic (req->self, PERL_MAGIC_ext);
540 SvREFCNT_dec (req->self); 630 SvREFCNT_dec (req->self);
541 } 631 }
542 632
543 SvREFCNT_dec (req->fh);
544 SvREFCNT_dec (req->sv1); 633 SvREFCNT_dec (req->sv1);
545 SvREFCNT_dec (req->sv2); 634 SvREFCNT_dec (req->sv2);
635 SvREFCNT_dec (req->sv3);
636 SvREFCNT_dec (req->sv4);
546 SvREFCNT_dec (req->callback); 637 SvREFCNT_dec (req->callback);
547 638
548 if (req->flags & FLAG_PTR2_FREE)
549 free (req->ptr2);
550
551 Safefree (req); 639 free (req);
552} 640}
553 641
642static void
554static void req_cancel_subs (aio_req grp) 643req_cancel_subs (aio_req grp)
555{ 644{
556 aio_req sub;
557
558 if (grp->type != REQ_GROUP) 645 if (grp->type != EIO_GROUP)
559 return; 646 return;
560 647
561 SvREFCNT_dec (grp->sv2); 648 SvREFCNT_dec (grp->sv2);
562 grp->sv2 = 0; 649 grp->sv2 = 0;
563 650
564 for (sub = grp->grp_first; sub; sub = sub->grp_next) 651 eio_grp_cancel (grp);
565 req_cancel (sub);
566} 652}
567 653
568static void req_cancel (aio_req req) 654static void ecb_cold
655create_respipe (void)
569{ 656{
570 req->flags |= FLAG_CANCELLED; 657 if (s_epipe_renew (&respipe))
571 658 croak ("IO::AIO: unable to initialize result pipe");
572 req_cancel_subs (req);
573} 659}
574 660
575static void *aio_proc(void *arg); 661static void
576 662poll_wait (void)
577static void start_thread (void)
578{ 663{
579 sigset_t fullsigset, oldsigset;
580 pthread_attr_t attr;
581
582 worker *wrk = calloc (1, sizeof (worker));
583
584 if (!wrk)
585 croak ("unable to allocate worker thread data");
586
587 pthread_attr_init (&attr);
588 pthread_attr_setstacksize (&attr, STACKSIZE);
589 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590#ifdef PTHREAD_SCOPE_PROCESS
591 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
592#endif
593
594 sigfillset (&fullsigset);
595
596 LOCK (wrklock);
597 sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
598
599 if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
600 {
601 wrk->prev = &wrk_first;
602 wrk->next = wrk_first.next;
603 wrk_first.next->prev = wrk;
604 wrk_first.next = wrk;
605 ++started;
606 }
607 else
608 free (wrk);
609
610 sigprocmask (SIG_SETMASK, &oldsigset, 0);
611 UNLOCK (wrklock);
612}
613
614static void maybe_start_thread ()
615{
616 if (get_nthreads () >= wanted)
617 return;
618
619 /* todo: maybe use idle here, but might be less exact */
620 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
621 return;
622
623 start_thread ();
624}
625
626static void req_send (aio_req req)
627{
628 ++nreqs;
629
630 LOCK (reqlock);
631 ++nready;
632 reqq_push (&req_queue, req);
633 pthread_cond_signal (&reqwait);
634 UNLOCK (reqlock);
635
636 maybe_start_thread ();
637}
638
639static void end_thread (void)
640{
641 aio_req req;
642
643 Newz (0, req, 1, aio_cb);
644
645 req->type = REQ_QUIT;
646 req->pri = PRI_MAX + PRI_BIAS;
647
648 LOCK (reqlock);
649 reqq_push (&req_queue, req);
650 pthread_cond_signal (&reqwait);
651 UNLOCK (reqlock);
652
653 LOCK (wrklock);
654 --started;
655 UNLOCK (wrklock);
656}
657
658static void set_max_idle (int nthreads)
659{
660 if (WORDACCESS_UNSAFE) LOCK (reqlock);
661 max_idle = nthreads <= 0 ? 1 : nthreads;
662 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
663}
664
665static void min_parallel (int nthreads)
666{
667 if (wanted < nthreads)
668 wanted = nthreads;
669}
670
671static void max_parallel (int nthreads)
672{
673 if (wanted > nthreads)
674 wanted = nthreads;
675
676 while (started > wanted)
677 end_thread ();
678}
679
680static void poll_wait ()
681{
682 fd_set rfd;
683
684 while (nreqs) 664 while (eio_nreqs ())
685 { 665 {
686 int size; 666 int size;
687 if (WORDACCESS_UNSAFE) LOCK (reslock); 667
668 X_LOCK (reslock);
688 size = res_queue.size; 669 size = res_queue.size;
689 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 670 X_UNLOCK (reslock);
690 671
691 if (size) 672 if (size)
692 return; 673 return;
693 674
694 maybe_start_thread (); 675 etp_maybe_start_thread ();
695 676
696 FD_ZERO(&rfd); 677 s_epipe_wait (&respipe);
697 FD_SET(respipe [0], &rfd);
698
699 select (respipe [0] + 1, &rfd, 0, 0, 0);
700 } 678 }
701} 679}
702 680
703static int poll_cb () 681static int
682poll_cb (void)
704{ 683{
705 dSP;
706 int count = 0;
707 int maxreqs = max_poll_reqs;
708 int do_croak = 0;
709 struct timeval tv_start, tv_now;
710 aio_req req;
711
712 if (max_poll_time)
713 gettimeofday (&tv_start, 0);
714
715 for (;;) 684 for (;;)
716 { 685 {
717 for (;;) 686 int res = eio_poll ();
687
688 if (res > 0)
689 croak (0);
690
691 if (!max_outstanding || max_outstanding > eio_nreqs ())
692 return res;
693
694 poll_wait ();
695 }
696}
697
698static void ecb_cold
699reinit (void)
700{
701 create_respipe ();
702
703 if (eio_init (want_poll, done_poll) < 0)
704 croak ("IO::AIO: unable to initialise eio library");
705}
706
707/*****************************************************************************/
708
709#if !_POSIX_MAPPED_FILES
710# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
711# define munmap(addr,length) EIO_ENOSYS ()
712#endif
713
714#if !_POSIX_MEMORY_PROTECTION
715# define mprotect(addr,len,prot) EIO_ENOSYS ()
716# define PROT_NONE 0
717# define PROT_WRITE 0
718# define MAP_PRIVATE 0
719# define MAP_SHARED 0
720# define MAP_FIXED 0
721#endif
722
723#define MMAP_MAGIC PERL_MAGIC_ext
724
725static int ecb_cold
726mmap_free (pTHX_ SV *sv, MAGIC *mg)
727{
728 int old_errno = errno;
729 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
730 errno = old_errno;
731
732 mg->mg_obj = 0; /* just in case */
733
734 SvREADONLY_off (sv);
735
736 if (SvPVX (sv) != mg->mg_ptr)
737 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
738
739 SvCUR_set (sv, 0);
740 SvPVX (sv) = 0;
741 SvOK_off (sv);
742
743 return 0;
744}
745
746static MGVTBL mmap_vtbl = {
747 0, 0, 0, 0, mmap_free
748};
749
750/*****************************************************************************/
751
752static SV *
753get_cb (SV *cb_sv)
754{
755 SvGETMAGIC (cb_sv);
756 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
757}
758
759static aio_req ecb_noinline
760dreq (SV *callback)
761{
762 SV *cb_cv;
763 aio_req req;
764 int req_pri = next_pri;
765 next_pri = EIO_PRI_DEFAULT;
766
767 cb_cv = get_cb (callback);
768
769 req = calloc (sizeof (*req), 1);
770 if (!req)
771 croak ("out of memory during eio_req allocation");
772
773 req->callback = SvREFCNT_inc (cb_cv);
774 req->pri = req_pri;
775
776 return req;
777}
778
779#define dREQ \
780 aio_req req = dreq (callback); \
781
782#define REQ_SEND \
783 PUTBACK; \
784 req_submit (req); \
785 SPAGAIN; \
786 \
787 if (GIMME_V != G_VOID) \
788 XPUSHs (req_sv (req, aio_req_stash));
789
790ecb_inline void
791req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
792{
793 if (expect_false (SvROK (path)))
794 {
795 SV *rv = SvRV (path);
796 SV *wdob;
797
798 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
718 { 799 {
719 maybe_start_thread (); 800 path = AvARRAY (rv)[1];
801 wdob = AvARRAY (rv)[0];
720 802
721 LOCK (reslock); 803 if (SvOK (wdob))
722 req = reqq_shift (&res_queue);
723
724 if (req)
725 { 804 {
726 --npending; 805 *wd = SvAIO_WD (wdob);
727 806 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
728 if (!res_queue.size)
729 {
730 /* read any signals sent by the worker threads */
731 char buf [32];
732 while (read (respipe [0], buf, 32) == 32)
733 ;
734 }
735 }
736
737 UNLOCK (reslock);
738
739 if (!req)
740 break;
741
742 --nreqs;
743
744 if (req->type == REQ_GROUP && req->size)
745 {
746 req->int1 = 1; /* mark request as delayed */
747 continue;
748 } 807 }
749 else 808 else
750 { 809 *wd = EIO_INVALID_WD;
751 req_invoke (req);
752
753 count++;
754 }
755
756 req_free (req);
757
758 if (maxreqs && !--maxreqs)
759 break;
760
761 if (max_poll_time)
762 {
763 gettimeofday (&tv_now, 0);
764
765 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
766 break;
767 }
768 } 810 }
811 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
812 {
813 *wd = (aio_wd)(long)SvIVX (rv);
814 *wdsv = SvREFCNT_inc_NN (rv);
815 *ptr = ".";
816 return; /* path set to "." */
817 }
818 else
819 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
820 }
769 821
770 if (nreqs <= max_outstanding) 822 *pathsv = newSVsv (path);
823 *ptr = SvPVbyte_nolen (*pathsv);
824}
825
826static void ecb_noinline
827req_set_path1 (aio_req req, SV *path)
828{
829 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
830}
831
832static void ecb_noinline
833req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
834{
835 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
836
837 switch (SvTYPE (rv))
838 {
839 case SVt_PVIO:
840 case SVt_PVLV:
841 case SVt_PVGV:
842 req->type = type_fh;
843 req->sv1 = newSVsv (fh_or_path);
844 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
771 break; 845 break;
772 846
773 poll_wait (); 847 default:
774 848 req->type = type_path;
775 ++maxreqs; 849 req_set_path1 (req, fh_or_path);
850 break;
776 } 851 }
777
778 return count;
779} 852}
780 853
781static void create_pipe () 854XS(boot_IO__AIO) ecb_cold;
782{
783 if (pipe (respipe))
784 croak ("unable to initialize result pipe");
785 855
786 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
787 croak ("cannot set result pipe to nonblocking mode");
788
789 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
790 croak ("cannot set result pipe to nonblocking mode");
791}
792
793/*****************************************************************************/
794/* work around various missing functions */
795
796#if !HAVE_PREADWRITE
797# define pread aio_pread
798# define pwrite aio_pwrite
799
800/*
801 * make our pread/pwrite safe against themselves, but not against
802 * normal read/write by using a mutex. slows down execution a lot,
803 * but that's your problem, not mine.
804 */
805static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
806
807static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
808{
809 ssize_t res;
810 off_t ooffset;
811
812 LOCK (preadwritelock);
813 ooffset = lseek (fd, 0, SEEK_CUR);
814 lseek (fd, offset, SEEK_SET);
815 res = read (fd, buf, count);
816 lseek (fd, ooffset, SEEK_SET);
817 UNLOCK (preadwritelock);
818
819 return res;
820}
821
822static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
823{
824 ssize_t res;
825 off_t ooffset;
826
827 LOCK (preadwritelock);
828 ooffset = lseek (fd, 0, SEEK_CUR);
829 lseek (fd, offset, SEEK_SET);
830 res = write (fd, buf, count);
831 lseek (fd, offset, SEEK_SET);
832 UNLOCK (preadwritelock);
833
834 return res;
835}
836#endif
837
838#if !HAVE_FDATASYNC
839# define fdatasync fsync
840#endif
841
842#if !HAVE_READAHEAD
843# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
844
845static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
846{
847 dBUF;
848
849 while (count > 0)
850 {
851 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
852
853 pread (fd, aio_buf, len, offset);
854 offset += len;
855 count -= len;
856 }
857
858 errno = 0;
859}
860
861#endif
862
863#if !HAVE_READDIR_R
864# define readdir_r aio_readdir_r
865
866static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
867
868static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
869{
870 struct dirent *e;
871 int errorno;
872
873 LOCK (readdirlock);
874
875 e = readdir (dirp);
876 errorno = errno;
877
878 if (e)
879 {
880 *res = ent;
881 strcpy (ent->d_name, e->d_name);
882 }
883 else
884 *res = 0;
885
886 UNLOCK (readdirlock);
887
888 errno = errorno;
889 return e ? 0 : -1;
890}
891#endif
892
893/* sendfile always needs emulation */
894static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
895{
896 ssize_t res;
897
898 if (!count)
899 return 0;
900
901#if HAVE_SENDFILE
902# if __linux
903 res = sendfile (ofd, ifd, &offset, count);
904
905# elif __freebsd
906 /*
907 * Of course, the freebsd sendfile is a dire hack with no thoughts
908 * wasted on making it similar to other I/O functions.
909 */
910 {
911 off_t sbytes;
912 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
913
914 if (res < 0 && sbytes)
915 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
916 res = sbytes;
917 }
918
919# elif __hpux
920 res = sendfile (ofd, ifd, offset, count, 0, 0);
921
922# elif __solaris
923 {
924 struct sendfilevec vec;
925 size_t sbytes;
926
927 vec.sfv_fd = ifd;
928 vec.sfv_flag = 0;
929 vec.sfv_off = offset;
930 vec.sfv_len = count;
931
932 res = sendfilev (ofd, &vec, 1, &sbytes);
933
934 if (res < 0 && sbytes)
935 res = sbytes;
936 }
937
938# endif
939#else
940 res = -1;
941 errno = ENOSYS;
942#endif
943
944 if (res < 0
945 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
946#if __solaris
947 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
948#endif
949 )
950 )
951 {
952 /* emulate sendfile. this is a major pain in the ass */
953 dBUF;
954
955 res = 0;
956
957 while (count)
958 {
959 ssize_t cnt;
960
961 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
962
963 if (cnt <= 0)
964 {
965 if (cnt && !res) res = -1;
966 break;
967 }
968
969 cnt = write (ofd, aio_buf, cnt);
970
971 if (cnt <= 0)
972 {
973 if (cnt && !res) res = -1;
974 break;
975 }
976
977 offset += cnt;
978 res += cnt;
979 count -= cnt;
980 }
981 }
982
983 return res;
984}
985
986/* read a full directory */
987static void scandir_ (aio_req req, worker *self)
988{
989 DIR *dirp;
990 union
991 {
992 struct dirent d;
993 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
994 } *u;
995 struct dirent *entp;
996 char *name, *names;
997 int memlen = 4096;
998 int memofs = 0;
999 int res = 0;
1000 int errorno;
1001
1002 LOCK (wrklock);
1003 self->dirp = dirp = opendir (req->ptr1);
1004 self->dbuf = u = malloc (sizeof (*u));
1005 req->flags |= FLAG_PTR2_FREE;
1006 req->ptr2 = names = malloc (memlen);
1007 UNLOCK (wrklock);
1008
1009 if (dirp && u && names)
1010 for (;;)
1011 {
1012 errno = 0;
1013 readdir_r (dirp, &u->d, &entp);
1014
1015 if (!entp)
1016 break;
1017
1018 name = entp->d_name;
1019
1020 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1021 {
1022 int len = strlen (name) + 1;
1023
1024 res++;
1025
1026 while (memofs + len > memlen)
1027 {
1028 memlen *= 2;
1029 LOCK (wrklock);
1030 req->ptr2 = names = realloc (names, memlen);
1031 UNLOCK (wrklock);
1032
1033 if (!names)
1034 break;
1035 }
1036
1037 memcpy (names + memofs, name, len);
1038 memofs += len;
1039 }
1040 }
1041
1042 if (errno)
1043 res = -1;
1044
1045 req->result = res;
1046}
1047
1048/*****************************************************************************/
1049
1050static void *aio_proc (void *thr_arg)
1051{
1052 aio_req req;
1053 struct timespec ts;
1054 worker *self = (worker *)thr_arg;
1055
1056 /* try to distribute timeouts somewhat evenly */
1057 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1058 * (1000000000UL / 1024UL);
1059
1060 for (;;)
1061 {
1062 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1063
1064 LOCK (reqlock);
1065
1066 for (;;)
1067 {
1068 self->req = req = reqq_shift (&req_queue);
1069
1070 if (req)
1071 break;
1072
1073 ++idle;
1074
1075 if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1076 == ETIMEDOUT)
1077 {
1078 if (idle > max_idle)
1079 {
1080 --idle;
1081 UNLOCK (reqlock);
1082 LOCK (wrklock);
1083 --started;
1084 UNLOCK (wrklock);
1085 goto quit;
1086 }
1087
1088 /* we are allowed to idle, so do so without any timeout */
1089 pthread_cond_wait (&reqwait, &reqlock);
1090 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1091 }
1092
1093 --idle;
1094 }
1095
1096 --nready;
1097
1098 UNLOCK (reqlock);
1099
1100 errno = 0; /* strictly unnecessary */
1101
1102 if (!(req->flags & FLAG_CANCELLED))
1103 switch (req->type)
1104 {
1105 case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1106 case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1107
1108 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1109 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1110
1111 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1112 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1113 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1114
1115 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1116 case REQ_CLOSE: req->result = close (req->int1); break;
1117 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1118 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1119 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126 case REQ_FSYNC: req->result = fsync (req->int1); break;
1127 case REQ_READDIR: scandir_ (req, self); break;
1128
1129 case REQ_BUSY:
1130 {
1131 struct timeval tv;
1132
1133 tv.tv_sec = req->int1;
1134 tv.tv_usec = req->int2;
1135
1136 req->result = select (0, 0, 0, 0, &tv);
1137 }
1138
1139 case REQ_GROUP:
1140 case REQ_NOP:
1141 break;
1142
1143 case REQ_QUIT:
1144 goto quit;
1145
1146 default:
1147 req->result = ENOSYS;
1148 break;
1149 }
1150
1151 req->errorno = errno;
1152
1153 LOCK (reslock);
1154
1155 ++npending;
1156
1157 if (!reqq_push (&res_queue, req))
1158 /* write a dummy byte to the pipe so fh becomes ready */
1159 write (respipe [1], &respipe, 1);
1160
1161 self->req = 0;
1162 worker_clear (self);
1163
1164 UNLOCK (reslock);
1165 }
1166
1167quit:
1168 LOCK (wrklock);
1169 worker_free (self);
1170 UNLOCK (wrklock);
1171
1172 return 0;
1173}
1174
1175/*****************************************************************************/
1176
1177static void atfork_prepare (void)
1178{
1179 LOCK (wrklock);
1180 LOCK (reqlock);
1181 LOCK (reslock);
1182#if !HAVE_PREADWRITE
1183 LOCK (preadwritelock);
1184#endif
1185#if !HAVE_READDIR_R
1186 LOCK (readdirlock);
1187#endif
1188}
1189
1190static void atfork_parent (void)
1191{
1192#if !HAVE_READDIR_R
1193 UNLOCK (readdirlock);
1194#endif
1195#if !HAVE_PREADWRITE
1196 UNLOCK (preadwritelock);
1197#endif
1198 UNLOCK (reslock);
1199 UNLOCK (reqlock);
1200 UNLOCK (wrklock);
1201}
1202
1203static void atfork_child (void)
1204{
1205 aio_req prv;
1206
1207 while (prv = reqq_shift (&req_queue))
1208 req_free (prv);
1209
1210 while (prv = reqq_shift (&res_queue))
1211 req_free (prv);
1212
1213 while (wrk_first.next != &wrk_first)
1214 {
1215 worker *wrk = wrk_first.next;
1216
1217 if (wrk->req)
1218 req_free (wrk->req);
1219
1220 worker_clear (wrk);
1221 worker_free (wrk);
1222 }
1223
1224 started = 0;
1225 idle = 0;
1226 nreqs = 0;
1227 nready = 0;
1228 npending = 0;
1229
1230 close (respipe [0]);
1231 close (respipe [1]);
1232 create_pipe ();
1233
1234 atfork_parent ();
1235}
1236
1237#define dREQ \
1238 aio_req req; \
1239 int req_pri = next_pri; \
1240 next_pri = DEFAULT_PRI + PRI_BIAS; \
1241 \
1242 if (SvOK (callback) && !SvROK (callback)) \
1243 croak ("callback must be undef or of reference type"); \
1244 \
1245 Newz (0, req, 1, aio_cb); \
1246 if (!req) \
1247 croak ("out of memory during aio_req allocation"); \
1248 \
1249 req->callback = newSVsv (callback); \
1250 req->pri = req_pri
1251
1252#define REQ_SEND \
1253 req_send (req); \
1254 \
1255 if (GIMME_V != G_VOID) \
1256 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1257
1258MODULE = IO::AIO PACKAGE = IO::AIO 856MODULE = IO::AIO PACKAGE = IO::AIO
1259 857
1260PROTOTYPES: ENABLE 858PROTOTYPES: ENABLE
1261 859
1262BOOT: 860BOOT:
1263{ 861{
862 static const struct {
863 const char *name;
864 IV iv;
865 } *civ, const_iv[] = {
866# define const_niv(name, value) { # name, (IV) value },
867# define const_iv(name) { # name, (IV) name },
868# define const_eio(name) { # name, (IV) EIO_ ## name },
869
870 /* you have to re-run ./gendef0 after adding/Removing any constants here */
871
872 const_iv (ENOSYS)
873 const_iv (EXDEV)
874 const_iv (EBADR)
875
876 const_iv (O_RDONLY)
877 const_iv (O_WRONLY)
878 const_iv (O_RDWR)
879 const_iv (O_CREAT)
880 const_iv (O_TRUNC)
881 const_iv (O_EXCL)
882 const_iv (O_APPEND)
883
884 const_iv (O_ASYNC)
885 const_iv (O_DIRECT)
886 const_iv (O_NOATIME)
887
888 const_iv (O_CLOEXEC)
889 const_iv (O_NOCTTY)
890 const_iv (O_NOFOLLOW)
891 const_iv (O_NONBLOCK)
892 const_iv (O_EXEC)
893 const_iv (O_SEARCH)
894 const_iv (O_DIRECTORY)
895 const_iv (O_DSYNC)
896 const_iv (O_RSYNC)
897 const_iv (O_SYNC)
898 const_iv (O_TTY_INIT)
899
900 const_iv (S_IFIFO)
901 const_iv (S_IFCHR)
902 const_iv (S_IFBLK)
903 const_iv (S_IFLNK)
904 const_iv (S_IFREG)
905 const_iv (S_IFDIR)
906 const_iv (S_IFWHT)
907 const_iv (S_IFSOCK)
908 const_iv (S_IFMT)
909
910 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
911 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
912 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
913 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
914 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
915 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
916
917 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
918 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
919 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
920 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
921 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
922
923 const_iv (ST_RDONLY)
924 const_iv (ST_NOSUID)
925 const_iv (ST_NODEV)
926 const_iv (ST_NOEXEC)
927 const_iv (ST_SYNCHRONOUS)
928 const_iv (ST_MANDLOCK)
929 const_iv (ST_WRITE)
930 const_iv (ST_APPEND)
931 const_iv (ST_IMMUTABLE)
932 const_iv (ST_NOATIME)
933 const_iv (ST_NODIRATIME)
934 const_iv (ST_RELATIME)
935
936 const_iv (PROT_NONE)
937 const_iv (PROT_EXEC)
938 const_iv (PROT_READ)
939 const_iv (PROT_WRITE)
940
941 /*const_iv (MAP_FIXED)*/
942 const_iv (MAP_PRIVATE)
943 const_iv (MAP_SHARED)
944 const_iv (MAP_ANONYMOUS)
945
946 /* linuxish */
947 const_iv (MAP_HUGETLB)
948 const_iv (MAP_LOCKED)
949 const_iv (MAP_NORESERVE)
950 const_iv (MAP_POPULATE)
951 const_iv (MAP_NONBLOCK)
952
953 const_iv (FIEMAP_FLAG_SYNC)
954 const_iv (FIEMAP_FLAG_XATTR)
955 const_iv (FIEMAP_FLAGS_COMPAT)
956 const_iv (FIEMAP_EXTENT_LAST)
957 const_iv (FIEMAP_EXTENT_UNKNOWN)
958 const_iv (FIEMAP_EXTENT_DELALLOC)
959 const_iv (FIEMAP_EXTENT_ENCODED)
960 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
961 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
962 const_iv (FIEMAP_EXTENT_DATA_INLINE)
963 const_iv (FIEMAP_EXTENT_DATA_TAIL)
964 const_iv (FIEMAP_EXTENT_UNWRITTEN)
965 const_iv (FIEMAP_EXTENT_MERGED)
966 const_iv (FIEMAP_EXTENT_SHARED)
967
968 const_iv (SPLICE_F_MOVE)
969 const_iv (SPLICE_F_NONBLOCK)
970 const_iv (SPLICE_F_MORE)
971 const_iv (SPLICE_F_GIFT)
972
973 const_iv (SEEK_DATA)
974 const_iv (SEEK_HOLE)
975
976 /* libeio constants */
977 const_eio (SEEK_SET)
978 const_eio (SEEK_CUR)
979 const_eio (SEEK_END)
980
981 const_eio (MCL_FUTURE)
982 const_eio (MCL_CURRENT)
983
984 const_eio (MS_ASYNC)
985 const_eio (MS_INVALIDATE)
986 const_eio (MS_SYNC)
987
988 const_eio (MT_MODIFY)
989
990 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
991 const_eio (SYNC_FILE_RANGE_WRITE)
992 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
993
994 const_eio (FALLOC_FL_KEEP_SIZE)
995 const_eio (FALLOC_FL_PUNCH_HOLE)
996
997 const_eio (READDIR_DENTS)
998 const_eio (READDIR_DIRS_FIRST)
999 const_eio (READDIR_STAT_ORDER)
1000 const_eio (READDIR_FOUND_UNKNOWN)
1001
1002 const_eio (DT_UNKNOWN)
1003 const_eio (DT_FIFO)
1004 const_eio (DT_CHR)
1005 const_eio (DT_DIR)
1006 const_eio (DT_BLK)
1007 const_eio (DT_REG)
1008 const_eio (DT_LNK)
1009 const_eio (DT_SOCK)
1010 const_eio (DT_WHT)
1011 };
1012
1264 HV *stash = gv_stashpv ("IO::AIO", 1); 1013 aio_stash = gv_stashpv ("IO::AIO" , 1);
1014 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1015 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1016 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1265 1017
1266 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); 1018 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1267 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); 1019 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1268 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1269 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1270 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1271 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1272 1020
1273 create_pipe (); 1021 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1274 pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1275}
1276 1022
1023 reinit ();
1024}
1025
1277void 1026void
1027reinit ()
1028 PROTOTYPE:
1029
1030void
1278max_poll_reqs (int nreqs) 1031max_poll_reqs (unsigned int nreqs)
1279 PROTOTYPE: $ 1032 PROTOTYPE: $
1280 CODE: 1033 CODE:
1281 max_poll_reqs = nreqs; 1034 eio_set_max_poll_reqs (nreqs);
1282 1035
1283void 1036void
1284max_poll_time (double nseconds) 1037max_poll_time (double nseconds)
1285 PROTOTYPE: $ 1038 PROTOTYPE: $
1286 CODE: 1039 CODE:
1287 max_poll_time = nseconds * AIO_TICKS; 1040 eio_set_max_poll_time (nseconds);
1288 1041
1289void 1042void
1290min_parallel (int nthreads) 1043min_parallel (unsigned int nthreads)
1291 PROTOTYPE: $
1292
1293void
1294max_parallel (int nthreads)
1295 PROTOTYPE: $
1296
1297void
1298max_idle (int nthreads)
1299 PROTOTYPE: $ 1044 PROTOTYPE: $
1300 CODE: 1045 CODE:
1301 set_max_idle (nthreads); 1046 eio_set_min_parallel (nthreads);
1302 1047
1303int 1048void
1304max_outstanding (int maxreqs) 1049max_parallel (unsigned int nthreads)
1305 PROTOTYPE: $ 1050 PROTOTYPE: $
1306 CODE: 1051 CODE:
1307 RETVAL = max_outstanding; 1052 eio_set_max_parallel (nthreads);
1053
1054void
1055max_idle (unsigned int nthreads)
1056 PROTOTYPE: $
1057 CODE:
1058 eio_set_max_idle (nthreads);
1059
1060void
1061idle_timeout (unsigned int seconds)
1062 PROTOTYPE: $
1063 CODE:
1064 eio_set_idle_timeout (seconds);
1065
1066void
1067max_outstanding (unsigned int maxreqs)
1068 PROTOTYPE: $
1069 CODE:
1308 max_outstanding = maxreqs; 1070 max_outstanding = maxreqs;
1309 OUTPUT:
1310 RETVAL
1311 1071
1312void 1072void
1313aio_open (pathname,flags,mode,callback=&PL_sv_undef) 1073aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1314 SV * pathname
1315 int flags
1316 int mode
1317 SV * callback
1318 PROTOTYPE: $$$;$
1319 PPCODE: 1074 PPCODE:
1320{ 1075{
1321 dREQ; 1076 dREQ;
1322 1077
1078 req->type = EIO_WD_OPEN;
1079 req_set_path1 (req, pathname);
1080
1081 REQ_SEND;
1082}
1083
1084void
1085aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1086 PPCODE:
1087{
1088 dREQ;
1089
1323 req->type = REQ_OPEN; 1090 req->type = EIO_OPEN;
1324 req->sv1 = newSVsv (pathname); 1091 req_set_path1 (req, pathname);
1325 req->ptr1 = SvPVbyte_nolen (pathname);
1326 req->int1 = flags; 1092 req->int1 = flags;
1327 req->mode = mode; 1093 req->int2 = mode;
1328 1094
1329 REQ_SEND; 1095 REQ_SEND;
1330} 1096}
1331 1097
1332void 1098void
1333aio_close (fh,callback=&PL_sv_undef) 1099aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1334 SV * fh
1335 SV * callback
1336 PROTOTYPE: $;$
1337 ALIAS: 1100 ALIAS:
1338 aio_close = REQ_CLOSE
1339 aio_fsync = REQ_FSYNC 1101 aio_fsync = EIO_FSYNC
1340 aio_fdatasync = REQ_FDATASYNC 1102 aio_fdatasync = EIO_FDATASYNC
1103 aio_syncfs = EIO_SYNCFS
1341 PPCODE: 1104 PPCODE:
1342{ 1105{
1106 int fd = s_fileno_croak (fh, 0);
1343 dREQ; 1107 dREQ;
1344 1108
1345 req->type = ix; 1109 req->type = ix;
1346 req->fh = newSVsv (fh); 1110 req->sv1 = newSVsv (fh);
1347 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1111 req->int1 = fd;
1348 1112
1349 REQ_SEND (req); 1113 REQ_SEND;
1350} 1114}
1351 1115
1352void 1116void
1117aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1118 PPCODE:
1119{
1120 int fd = s_fileno_croak (fh, 0);
1121 dREQ;
1122
1123 req->type = EIO_SYNC_FILE_RANGE;
1124 req->sv1 = newSVsv (fh);
1125 req->int1 = fd;
1126 req->offs = offset;
1127 req->size = nbytes;
1128 req->int2 = flags;
1129
1130 REQ_SEND;
1131}
1132
1133void
1134aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1135 PPCODE:
1136{
1137 int fd = s_fileno_croak (fh, 0);
1138 dREQ;
1139
1140 req->type = EIO_FALLOCATE;
1141 req->sv1 = newSVsv (fh);
1142 req->int1 = fd;
1143 req->int2 = mode;
1144 req->offs = offset;
1145 req->size = len;
1146
1147 REQ_SEND;
1148}
1149
1150void
1151aio_close (SV *fh, SV *callback=&PL_sv_undef)
1152 PPCODE:
1153{
1154 static int close_fd = -1; /* dummy fd to close fds via dup2 */
1155 int fd = s_fileno_croak (fh, 0);
1156 dREQ;
1157
1158 if (expect_false (close_fd < 0))
1159 {
1160 int pipefd [2];
1161
1162 if (
1163#ifdef _WIN32
1164 _pipe (pipefd, 1, _O_BINARY) < 0
1165#else
1166 pipe (pipefd) < 0
1167 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1168#endif
1169 || close (pipefd [1]) < 0
1170 )
1171 abort (); /*D*/
1172
1173 close_fd = pipefd [0];
1174 }
1175
1176 req->type = EIO_DUP2;
1177 req->int1 = close_fd;
1178 req->sv2 = newSVsv (fh);
1179 req->int2 = fd;
1180
1181 REQ_SEND;
1182}
1183
1184void
1185aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1186 PPCODE:
1187{
1188 int fd = s_fileno_croak (fh, 0);
1189 dREQ;
1190
1191 req->type = EIO_SEEK;
1192 req->sv1 = newSVsv (fh);
1193 req->int1 = fd;
1194 req->offs = SvVAL64 (offset);
1195 req->int2 = whence;
1196
1197 REQ_SEND;
1198}
1199
1200void
1353aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) 1201aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1354 SV * fh
1355 UV offset
1356 UV length
1357 SV * data
1358 UV dataoffset
1359 SV * callback
1360 ALIAS: 1202 ALIAS:
1361 aio_read = REQ_READ 1203 aio_read = EIO_READ
1362 aio_write = REQ_WRITE 1204 aio_write = EIO_WRITE
1363 PROTOTYPE: $$$$$;$
1364 PPCODE: 1205 PPCODE:
1365{ 1206{
1366 STRLEN svlen; 1207 STRLEN svlen;
1208 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1367 char *svptr = SvPVbyte (data, svlen); 1209 char *svptr = SvPVbyte (data, svlen);
1368 1210 UV len = SvUV (length);
1369 SvUPGRADE (data, SVt_PV);
1370 SvPOK_on (data);
1371 1211
1372 if (dataoffset < 0) 1212 if (dataoffset < 0)
1373 dataoffset += svlen; 1213 dataoffset += svlen;
1374 1214
1375 if (dataoffset < 0 || dataoffset > svlen) 1215 if (dataoffset < 0 || dataoffset > svlen)
1376 croak ("data offset outside of string"); 1216 croak ("dataoffset outside of data scalar");
1377 1217
1378 if (ix == REQ_WRITE) 1218 if (ix == EIO_WRITE)
1379 { 1219 {
1380 /* write: check length and adjust. */ 1220 /* write: check length and adjust. */
1381 if (length < 0 || length + dataoffset > svlen) 1221 if (!SvOK (length) || len + dataoffset > svlen)
1382 length = svlen - dataoffset; 1222 len = svlen - dataoffset;
1383 } 1223 }
1384 else 1224 else
1385 { 1225 {
1386 /* read: grow scalar as necessary */ 1226 /* read: check type and grow scalar as necessary */
1227 SvUPGRADE (data, SVt_PV);
1228 if (SvLEN (data) >= SvCUR (data))
1387 svptr = SvGROW (data, length + dataoffset); 1229 svptr = SvGROW (data, len + dataoffset + 1);
1230 else if (SvCUR (data) < len + dataoffset)
1231 croak ("length + dataoffset outside of scalar, and cannot grow");
1388 } 1232 }
1389
1390 if (length < 0)
1391 croak ("length must not be negative");
1392 1233
1393 { 1234 {
1394 dREQ; 1235 dREQ;
1395 1236
1396 req->type = ix; 1237 req->type = ix;
1397 req->fh = newSVsv (fh); 1238 req->sv1 = newSVsv (fh);
1398 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1239 req->int1 = fd;
1399 : IoOFP (sv_2io (fh))); 1240 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1400 req->offs = offset;
1401 req->size = length; 1241 req->size = len;
1402 req->sv1 = SvREFCNT_inc (data); 1242 req->sv2 = SvREFCNT_inc (data);
1403 req->ptr1 = (char *)svptr + dataoffset; 1243 req->ptr2 = (char *)svptr + dataoffset;
1404 req->stroffset = dataoffset; 1244 req->stroffset = dataoffset;
1405 1245
1406 if (!SvREADONLY (data)) 1246 if (!SvREADONLY (data))
1407 { 1247 {
1408 SvREADONLY_on (data); 1248 SvREADONLY_on (data);
1409 req->flags |= FLAG_SV1_RO_OFF; 1249 req->flags |= FLAG_SV2_RO_OFF;
1410 } 1250 }
1411 1251
1412 REQ_SEND; 1252 REQ_SEND;
1413 } 1253 }
1414} 1254}
1415 1255
1416void 1256void
1417aio_readlink (path,callback=&PL_sv_undef) 1257aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1418 SV * path 1258 ALIAS:
1419 SV * callback 1259 aio_readlink = EIO_READLINK
1420 PROTOTYPE: $$;$ 1260 aio_realpath = EIO_REALPATH
1421 PPCODE: 1261 PPCODE:
1422{ 1262{
1423 SV *data;
1424 dREQ; 1263 dREQ;
1425 1264
1426 data = newSV (NAME_MAX);
1427 SvPOK_on (data);
1428
1429 req->type = REQ_READLINK; 1265 req->type = ix;
1430 req->fh = newSVsv (path); 1266 req_set_path1 (req, pathname);
1431 req->ptr2 = SvPVbyte_nolen (path);
1432 req->sv1 = data;
1433 req->ptr1 = SvPVbyte_nolen (data);
1434 1267
1435 REQ_SEND; 1268 REQ_SEND;
1436} 1269}
1437 1270
1438void 1271void
1439aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) 1272aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1440 SV * out_fh
1441 SV * in_fh
1442 UV in_offset
1443 UV length
1444 SV * callback
1445 PROTOTYPE: $$$$;$
1446 PPCODE: 1273 PPCODE:
1447{ 1274{
1275 int ifd = s_fileno_croak (in_fh , 0);
1276 int ofd = s_fileno_croak (out_fh, 1);
1448 dREQ; 1277 dREQ;
1449 1278
1450 req->type = REQ_SENDFILE; 1279 req->type = EIO_SENDFILE;
1451 req->fh = newSVsv (out_fh); 1280 req->sv1 = newSVsv (out_fh);
1452 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh))); 1281 req->int1 = ofd;
1453 req->sv2 = newSVsv (in_fh); 1282 req->sv2 = newSVsv (in_fh);
1454 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); 1283 req->int2 = ifd;
1455 req->offs = in_offset; 1284 req->offs = in_offset;
1456 req->size = length; 1285 req->size = length;
1457 1286
1458 REQ_SEND; 1287 REQ_SEND;
1459} 1288}
1460 1289
1461void 1290void
1462aio_readahead (fh,offset,length,callback=&PL_sv_undef) 1291aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1463 SV * fh
1464 UV offset
1465 IV length
1466 SV * callback
1467 PROTOTYPE: $$$;$
1468 PPCODE: 1292 PPCODE:
1469{ 1293{
1294 int fd = s_fileno_croak (fh, 0);
1470 dREQ; 1295 dREQ;
1471 1296
1472 req->type = REQ_READAHEAD; 1297 req->type = EIO_READAHEAD;
1473 req->fh = newSVsv (fh); 1298 req->sv1 = newSVsv (fh);
1474 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1299 req->int1 = fd;
1475 req->offs = offset; 1300 req->offs = offset;
1476 req->size = length; 1301 req->size = length;
1477 1302
1478 REQ_SEND; 1303 REQ_SEND;
1479} 1304}
1480 1305
1481void 1306void
1482aio_stat (fh_or_path,callback=&PL_sv_undef) 1307aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1483 SV * fh_or_path
1484 SV * callback
1485 ALIAS: 1308 ALIAS:
1486 aio_stat = REQ_STAT 1309 aio_stat = EIO_STAT
1487 aio_lstat = REQ_LSTAT 1310 aio_lstat = EIO_LSTAT
1311 aio_statvfs = EIO_STATVFS
1488 PPCODE: 1312 PPCODE:
1489{ 1313{
1490 dREQ; 1314 dREQ;
1491 1315
1492 req->ptr2 = malloc (sizeof (Stat_t)); 1316 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1493 if (!req->ptr2)
1494 {
1495 req_free (req);
1496 croak ("out of memory during aio_req statdata allocation");
1497 }
1498
1499 req->flags |= FLAG_PTR2_FREE;
1500
1501 if (SvPOK (fh_or_path))
1502 {
1503 req->type = ix;
1504 req->sv1 = newSVsv (fh_or_path);
1505 req->ptr1 = SvPVbyte_nolen (fh_or_path);
1506 }
1507 else
1508 {
1509 req->type = REQ_FSTAT;
1510 req->fh = newSVsv (fh_or_path);
1511 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1512 }
1513 1317
1514 REQ_SEND; 1318 REQ_SEND;
1515} 1319}
1516 1320
1321UV
1322major (UV dev)
1323 ALIAS:
1324 minor = 1
1325 CODE:
1326 RETVAL = ix ? major (dev) : minor (dev);
1327 OUTPUT:
1328 RETVAL
1329
1330UV
1331makedev (UV maj, UV min)
1332 CODE:
1333 RETVAL = makedev (maj, min);
1334 OUTPUT:
1335 RETVAL
1336
1517void 1337void
1338aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1339 PPCODE:
1340{
1341 dREQ;
1342
1343 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1344 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1345 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1346
1347 REQ_SEND;
1348}
1349
1350void
1351aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1352 PPCODE:
1353{
1354 dREQ;
1355
1356 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1357 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1358
1359 REQ_SEND;
1360}
1361
1362void
1363aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1364 PPCODE:
1365{
1366 dREQ;
1367
1368 req->int2 = mode;
1369 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1370
1371 REQ_SEND;
1372}
1373
1374void
1375aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
1376 PPCODE:
1377{
1378 dREQ;
1379
1380 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1381 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1382 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1383
1384 REQ_SEND;
1385}
1386
1387void
1388aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1389 PPCODE:
1390{
1391 dREQ;
1392
1393 req->type = EIO_READDIR;
1394 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1395
1396 if (flags & EIO_READDIR_DENTS)
1397 req->int1 |= EIO_READDIR_CUSTOM2;
1398
1399 req_set_path1 (req, pathname);
1400
1401 REQ_SEND;
1402}
1403
1404void
1405aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1406 PPCODE:
1407{
1408 dREQ;
1409
1410 req->type = EIO_MKDIR;
1411 req->int2 = mode;
1412 req_set_path1 (req, pathname);
1413
1414 REQ_SEND;
1415}
1416
1417void
1518aio_unlink (pathname,callback=&PL_sv_undef) 1418aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1519 SV * pathname
1520 SV * callback
1521 ALIAS: 1419 ALIAS:
1522 aio_unlink = REQ_UNLINK 1420 aio_unlink = EIO_UNLINK
1523 aio_rmdir = REQ_RMDIR 1421 aio_rmdir = EIO_RMDIR
1524 aio_readdir = REQ_READDIR 1422 aio_readdir = EIO_READDIR
1525 PPCODE: 1423 PPCODE:
1526{ 1424{
1527 dREQ; 1425 dREQ;
1528 1426
1529 req->type = ix; 1427 req->type = ix;
1530 req->sv1 = newSVsv (pathname); 1428 req_set_path1 (req, pathname);
1531 req->ptr1 = SvPVbyte_nolen (pathname);
1532 1429
1533 REQ_SEND; 1430 REQ_SEND;
1534} 1431}
1535 1432
1536void 1433void
1537aio_link (oldpath,newpath,callback=&PL_sv_undef) 1434aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1538 SV * oldpath
1539 SV * newpath
1540 SV * callback
1541 ALIAS: 1435 ALIAS:
1542 aio_link = REQ_LINK 1436 aio_link = EIO_LINK
1543 aio_symlink = REQ_SYMLINK 1437 aio_symlink = EIO_SYMLINK
1544 aio_rename = REQ_RENAME 1438 aio_rename = EIO_RENAME
1545 PPCODE: 1439 PPCODE:
1546{ 1440{
1441 eio_wd wd2 = 0;
1547 dREQ; 1442 dREQ;
1548 1443
1549 req->type = ix; 1444 req->type = ix;
1550 req->fh = newSVsv (oldpath); 1445 req_set_path1 (req, oldpath);
1551 req->ptr2 = SvPVbyte_nolen (req->fh); 1446 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1552 req->sv1 = newSVsv (newpath); 1447 req->int3 = (long)wd2;
1553 req->ptr1 = SvPVbyte_nolen (newpath);
1554 1448
1555 REQ_SEND; 1449 REQ_SEND;
1556} 1450}
1557 1451
1558void 1452void
1559aio_mknod (pathname,mode,dev,callback=&PL_sv_undef) 1453aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1560 SV * pathname
1561 SV * callback
1562 UV mode
1563 UV dev
1564 PPCODE: 1454 PPCODE:
1565{ 1455{
1566 dREQ; 1456 dREQ;
1567 1457
1568 req->type = REQ_MKNOD; 1458 req->type = EIO_MKNOD;
1569 req->sv1 = newSVsv (pathname);
1570 req->ptr1 = SvPVbyte_nolen (pathname);
1571 req->mode = (mode_t)mode; 1459 req->int2 = (mode_t)mode;
1572 req->offs = dev; 1460 req->offs = dev;
1461 req_set_path1 (req, pathname);
1573 1462
1574 REQ_SEND; 1463 REQ_SEND;
1575} 1464}
1576 1465
1577void 1466void
1467aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1468 ALIAS:
1469 aio_mtouch = EIO_MTOUCH
1470 aio_msync = EIO_MSYNC
1471 PPCODE:
1472{
1473 STRLEN svlen;
1474 char *svptr = SvPVbyte (data, svlen);
1475 UV len = SvUV (length);
1476
1477 if (offset < 0)
1478 offset += svlen;
1479
1480 if (offset < 0 || offset > svlen)
1481 croak ("offset outside of scalar");
1482
1483 if (!SvOK (length) || len + offset > svlen)
1484 len = svlen - offset;
1485
1486 {
1487 dREQ;
1488
1489 req->type = ix;
1490 req->sv2 = SvREFCNT_inc (data);
1491 req->ptr2 = (char *)svptr + offset;
1492 req->size = len;
1493 req->int1 = flags;
1494
1495 REQ_SEND;
1496 }
1497}
1498
1499void
1500aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
1501 PPCODE:
1502{
1503 STRLEN svlen;
1504 char *svptr = SvPVbyte (data, svlen);
1505 UV len = SvUV (length);
1506
1507 if (offset < 0)
1508 offset += svlen;
1509
1510 if (offset < 0 || offset > svlen)
1511 croak ("offset outside of scalar");
1512
1513 if (!SvOK (length) || len + offset > svlen)
1514 len = svlen - offset;
1515
1516 {
1517 dREQ;
1518
1519 req->type = EIO_MLOCK;
1520 req->sv2 = SvREFCNT_inc (data);
1521 req->ptr2 = (char *)svptr + offset;
1522 req->size = len;
1523
1524 REQ_SEND;
1525 }
1526}
1527
1528void
1529aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
1530 PPCODE:
1531{
1532 dREQ;
1533
1534 req->type = EIO_MLOCKALL;
1535 req->int1 = flags;
1536
1537 REQ_SEND;
1538}
1539
1540void
1541aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1542 PPCODE:
1543{
1544 int fd = s_fileno_croak (fh, 0);
1545 dREQ;
1546
1547 req->type = EIO_CUSTOM;
1548 req->sv1 = newSVsv (fh);
1549 req->int1 = fd;
1550
1551 req->feed = fiemap;
1552#if HAVE_FIEMAP
1553 /* keep our fingers crossed that the next two types are 64 bit */
1554 req->offs = start;
1555 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1556 req->int2 = flags;
1557 req->int3 = SvOK (count) ? SvIV (count) : -1;
1558#endif
1559
1560 REQ_SEND;
1561}
1562
1563void
1578aio_busy (delay,callback=&PL_sv_undef) 1564aio_busy (double delay, SV *callback=&PL_sv_undef)
1579 double delay
1580 SV * callback
1581 PPCODE: 1565 PPCODE:
1582{ 1566{
1583 dREQ; 1567 dREQ;
1584 1568
1585 req->type = REQ_BUSY; 1569 req->type = EIO_BUSY;
1586 req->int1 = delay < 0. ? 0 : delay; 1570 req->nv1 = delay < 0. ? 0. : delay;
1587 req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1588 1571
1589 REQ_SEND; 1572 REQ_SEND;
1590} 1573}
1591 1574
1592void 1575void
1593aio_group (callback=&PL_sv_undef) 1576aio_group (SV *callback=&PL_sv_undef)
1594 SV * callback
1595 PROTOTYPE: ;$
1596 PPCODE: 1577 PPCODE:
1597{ 1578{
1598 dREQ; 1579 dREQ;
1599 1580
1600 req->type = REQ_GROUP; 1581 req->type = EIO_GROUP;
1601 1582
1602 req_send (req); 1583 req_submit (req);
1603 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 1584 XPUSHs (req_sv (req, aio_grp_stash));
1604} 1585}
1605 1586
1606void 1587void
1607aio_nop (callback=&PL_sv_undef) 1588aio_nop (SV *callback=&PL_sv_undef)
1608 SV * callback 1589 ALIAS:
1590 aio_nop = EIO_NOP
1591 aio_sync = EIO_SYNC
1609 PPCODE: 1592 PPCODE:
1610{ 1593{
1611 dREQ; 1594 dREQ;
1612 1595
1613 req->type = REQ_NOP; 1596 req->type = ix;
1614 1597
1615 REQ_SEND; 1598 REQ_SEND;
1616} 1599}
1617 1600
1618int 1601int
1619aioreq_pri (int pri = 0) 1602aioreq_pri (int pri = 0)
1620 PROTOTYPE: ;$
1621 CODE: 1603 CODE:
1622 RETVAL = next_pri - PRI_BIAS; 1604 RETVAL = next_pri;
1623 if (items > 0) 1605 if (items > 0)
1624 { 1606 {
1625 if (pri < PRI_MIN) pri = PRI_MIN; 1607 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1626 if (pri > PRI_MAX) pri = PRI_MAX; 1608 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1627 next_pri = pri + PRI_BIAS; 1609 next_pri = pri;
1628 } 1610 }
1629 OUTPUT: 1611 OUTPUT:
1630 RETVAL 1612 RETVAL
1631 1613
1632void 1614void
1633aioreq_nice (int nice = 0) 1615aioreq_nice (int nice = 0)
1634 CODE: 1616 CODE:
1635 nice = next_pri - nice; 1617 nice = next_pri - nice;
1636 if (nice < PRI_MIN) nice = PRI_MIN; 1618 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1637 if (nice > PRI_MAX) nice = PRI_MAX; 1619 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1638 next_pri = nice + PRI_BIAS; 1620 next_pri = nice;
1639 1621
1640void 1622void
1641flush () 1623flush ()
1642 PROTOTYPE:
1643 CODE: 1624 CODE:
1644 while (nreqs) 1625 while (eio_nreqs ())
1645 { 1626 {
1646 poll_wait (); 1627 poll_wait ();
1647 poll_cb (0); 1628 poll_cb ();
1648 } 1629 }
1649 1630
1650void 1631int
1651poll() 1632poll ()
1652 PROTOTYPE:
1653 CODE: 1633 CODE:
1654 if (nreqs)
1655 {
1656 poll_wait (); 1634 poll_wait ();
1657 poll_cb (0); 1635 RETVAL = poll_cb ();
1658 }
1659
1660int
1661poll_fileno()
1662 PROTOTYPE:
1663 CODE:
1664 RETVAL = respipe [0];
1665 OUTPUT: 1636 OUTPUT:
1666 RETVAL 1637 RETVAL
1667 1638
1668int 1639int
1640poll_fileno ()
1641 CODE:
1642 RETVAL = s_epipe_fd (&respipe);
1643 OUTPUT:
1644 RETVAL
1645
1646int
1669poll_cb(...) 1647poll_cb (...)
1670 PROTOTYPE: 1648 PROTOTYPE:
1671 CODE: 1649 CODE:
1672 RETVAL = poll_cb (); 1650 RETVAL = poll_cb ();
1673 OUTPUT: 1651 OUTPUT:
1674 RETVAL 1652 RETVAL
1675 1653
1676void 1654void
1677poll_wait() 1655poll_wait ()
1678 PROTOTYPE:
1679 CODE: 1656 CODE:
1680 if (nreqs)
1681 poll_wait (); 1657 poll_wait ();
1682 1658
1683int 1659int
1684nreqs() 1660nreqs ()
1685 PROTOTYPE:
1686 CODE: 1661 CODE:
1687 RETVAL = nreqs; 1662 RETVAL = eio_nreqs ();
1688 OUTPUT: 1663 OUTPUT:
1689 RETVAL 1664 RETVAL
1690 1665
1691int 1666int
1692nready() 1667nready ()
1693 PROTOTYPE:
1694 CODE: 1668 CODE:
1695 RETVAL = get_nready (); 1669 RETVAL = eio_nready ();
1696 OUTPUT: 1670 OUTPUT:
1697 RETVAL 1671 RETVAL
1698 1672
1699int 1673int
1700npending() 1674npending ()
1701 PROTOTYPE:
1702 CODE: 1675 CODE:
1703 RETVAL = get_npending (); 1676 RETVAL = eio_npending ();
1704 OUTPUT: 1677 OUTPUT:
1705 RETVAL 1678 RETVAL
1706 1679
1707int 1680int
1708nthreads() 1681nthreads ()
1709 PROTOTYPE:
1710 CODE: 1682 CODE:
1711 if (WORDACCESS_UNSAFE) LOCK (wrklock); 1683 RETVAL = eio_nthreads ();
1712 RETVAL = started;
1713 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714 OUTPUT: 1684 OUTPUT:
1715 RETVAL 1685 RETVAL
1716 1686
1687int
1688fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1689 CODE:
1690 RETVAL = posix_fadvise (fh, offset, length, advice);
1691 OUTPUT:
1692 RETVAL
1693
1694IV
1695sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
1696 CODE:
1697 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
1698 OUTPUT:
1699 RETVAL
1700
1701void
1702mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
1703 PPCODE:
1704 sv_unmagic (scalar, MMAP_MAGIC);
1705{
1706 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
1707 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
1708 if (addr == (void *)-1)
1709 XSRETURN_NO;
1710
1711 sv_force_normal (scalar);
1712
1713 /* we store the length in mg_obj, as namlen is I32 :/ */
1714 sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
1715 ->mg_obj = (SV *)length;
1716
1717 SvUPGRADE (scalar, SVt_PV); /* nop... */
1718
1719 if (!(prot & PROT_WRITE))
1720 SvREADONLY_on (scalar);
1721
1722 if (SvLEN (scalar))
1723 Safefree (SvPVX (scalar));
1724
1725 SvPVX (scalar) = (char *)addr;
1726 SvCUR_set (scalar, length);
1727 SvLEN_set (scalar, 0);
1728 SvPOK_only (scalar);
1729
1730 XSRETURN_YES;
1731}
1732
1733void
1734munmap (SV *scalar)
1735 CODE:
1736 sv_unmagic (scalar, MMAP_MAGIC);
1737
1738int
1739madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
1740 ALIAS:
1741 mprotect = 1
1742 CODE:
1743{
1744 STRLEN svlen;
1745 void *addr = SvPVbyte (scalar, svlen);
1746 size_t len = SvUV (length);
1747
1748 if (offset < 0)
1749 offset += svlen;
1750
1751 if (offset < 0 || offset > svlen)
1752 croak ("offset outside of scalar");
1753
1754 if (!SvOK (length) || len + offset > svlen)
1755 len = svlen - offset;
1756
1757 addr = (void *)(((intptr_t)addr) + offset);
1758 eio_page_align (&addr, &len);
1759
1760 switch (ix)
1761 {
1762 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
1763 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
1764 }
1765}
1766 OUTPUT:
1767 RETVAL
1768
1769int
1770munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
1771 CODE:
1772{
1773 STRLEN svlen;
1774 void *addr = SvPVbyte (scalar, svlen);
1775 size_t len = SvUV (length);
1776
1777 if (offset < 0)
1778 offset += svlen;
1779
1780 if (offset < 0 || offset > svlen)
1781 croak ("offset outside of scalar");
1782
1783 if (!SvOK (length) || len + offset > svlen)
1784 len = svlen - offset;
1785
1786 addr = (void *)(((intptr_t)addr) + offset);
1787 eio_page_align (&addr, &len);
1788#if _POSIX_MEMLOCK_RANGE
1789 RETVAL = munlock (addr, len);
1790#else
1791 RETVAL = EIO_ENOSYS ();
1792#endif
1793}
1794 OUTPUT:
1795 RETVAL
1796
1797int
1798munlockall ()
1799 CODE:
1800#if _POSIX_MEMLOCK
1801 munlockall ();
1802#else
1803 RETVAL = EIO_ENOSYS ();
1804#endif
1805 OUTPUT:
1806 RETVAL
1807
1808int
1809splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
1810 CODE:
1811{
1812#if HAVE_LINUX_SPLICE
1813 loff_t off_in_, off_out_;
1814 RETVAL = splice (
1815 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
1816 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
1817 length, flags
1818 );
1819#else
1820 RETVAL = EIO_ENOSYS ();
1821#endif
1822}
1823 OUTPUT:
1824 RETVAL
1825
1826int
1827tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
1828 CODE:
1829#if HAVE_LINUX_SPLICE
1830 RETVAL = tee (rfh, wfh, length, flags);
1831#else
1832 RETVAL = EIO_ENOSYS ();
1833#endif
1834 OUTPUT:
1835 RETVAL
1836
1837void _on_next_submit (SV *cb)
1838 CODE:
1839 SvREFCNT_dec (on_next_submit);
1840 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1841
1717PROTOTYPES: DISABLE 1842PROTOTYPES: DISABLE
1843
1844MODULE = IO::AIO PACKAGE = IO::AIO::WD
1845
1846BOOT:
1847{
1848 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
1849 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
1850}
1851
1852void
1853DESTROY (SV *self)
1854 CODE:
1855{
1856 aio_wd wd = SvAIO_WD (self);
1857#if HAVE_AT
1858 {
1859 SV *callback = &PL_sv_undef;
1860 dREQ; /* clobbers next_pri :/ */
1861 next_pri = req->pri; /* restore next_pri */
1862 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
1863 req->type = EIO_WD_CLOSE;
1864 req->wd = wd;
1865 REQ_SEND;
1866 }
1867#else
1868 eio_wd_close_sync (wd);
1869#endif
1870}
1718 1871
1719MODULE = IO::AIO PACKAGE = IO::AIO::REQ 1872MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720 1873
1721void 1874void
1722cancel (aio_req_ornot req) 1875cancel (aio_req_ornot req)
1723 CODE: 1876 CODE:
1724 req_cancel (req); 1877 eio_cancel (req);
1725 1878
1726void 1879void
1727cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 1880cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728 CODE: 1881 PPCODE:
1882{
1883 if (GIMME_V != G_VOID)
1884 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1885
1886 if (items > 1)
1887 {
1888 SV *cb_cv =get_cb (callback);
1889
1729 SvREFCNT_dec (req->callback); 1890 SvREFCNT_dec (req->callback);
1730 req->callback = newSVsv (callback); 1891 req->callback = SvREFCNT_inc (cb_cv);
1892 }
1893}
1731 1894
1732MODULE = IO::AIO PACKAGE = IO::AIO::GRP 1895MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733 1896
1734void 1897void
1735add (aio_req grp, ...) 1898add (aio_req grp, ...)
1736 PPCODE: 1899 PPCODE:
1737{ 1900{
1738 int i; 1901 int i;
1739 aio_req req;
1740 1902
1741 if (grp->int1 == 2) 1903 if (grp->int1 == 2)
1742 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 1904 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743 1905
1744 for (i = 1; i < items; ++i ) 1906 for (i = 1; i < items; ++i )
1745 { 1907 {
1908 aio_req req;
1909
1746 if (GIMME_V != G_VOID) 1910 if (GIMME_V != G_VOID)
1747 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 1911 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748 1912
1749 req = SvAIO_REQ (ST (i)); 1913 req = SvAIO_REQ (ST (i));
1750 1914
1751 if (req) 1915 if (req)
1752 { 1916 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 } 1917 }
1765} 1918}
1766 1919
1767void 1920void
1768cancel_subs (aio_req_ornot req) 1921cancel_subs (aio_req_ornot req)
… …
1777 AV *av; 1930 AV *av;
1778 1931
1779 grp->errorno = errno; 1932 grp->errorno = errno;
1780 1933
1781 av = newAV (); 1934 av = newAV ();
1935 av_extend (av, items - 1);
1782 1936
1783 for (i = 1; i < items; ++i ) 1937 for (i = 1; i < items; ++i )
1784 av_push (av, newSVsv (ST (i))); 1938 av_push (av, newSVsv (ST (i)));
1785 1939
1786 SvREFCNT_dec (grp->sv1); 1940 SvREFCNT_dec (grp->sv1);
… …
1793 grp->errorno = errorno; 1947 grp->errorno = errorno;
1794 1948
1795void 1949void
1796limit (aio_req grp, int limit) 1950limit (aio_req grp, int limit)
1797 CODE: 1951 CODE:
1798 grp->int2 = limit; 1952 eio_grp_limit (grp, limit);
1799 aio_grp_feed (grp);
1800 1953
1801void 1954void
1802feed (aio_req grp, SV *callback=&PL_sv_undef) 1955feed (aio_req grp, SV *callback=&PL_sv_undef)
1803 CODE: 1956 CODE:
1804{ 1957{
1805 SvREFCNT_dec (grp->sv2); 1958 SvREFCNT_dec (grp->sv2);
1806 grp->sv2 = newSVsv (callback); 1959 grp->sv2 = newSVsv (callback);
1960 grp->feed = aio_grp_feed;
1807 1961
1808 if (grp->int2 <= 0) 1962 if (grp->int2 <= 0)
1809 grp->int2 = 2; 1963 grp->int2 = 2;
1810 1964
1811 aio_grp_feed (grp); 1965 eio_grp_limit (grp, grp->int2);
1812} 1966}
1813 1967

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