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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.269 by root, Thu Nov 29 21:48:44 2018 UTC

1#include "xthread.h" 1#include "libeio/xthread.h"
2 2
3#include <errno.h> 3#include <errno.h>
4 4
5#include "EXTERN.h" 5#include "EXTERN.h"
6#include "perl.h" 6#include "perl.h"
7#include "XSUB.h" 7#include "XSUB.h"
8
9#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
8 12
9#include <stddef.h> 13#include <stddef.h>
10#include <stdlib.h> 14#include <stdlib.h>
11#include <errno.h> 15#include <errno.h>
12#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
13#include <sys/stat.h> 18#include <sys/stat.h>
14#include <limits.h> 19#include <limits.h>
15#include <fcntl.h> 20#include <fcntl.h>
16#include <sched.h> 21#include <sched.h>
17 22
23/* the incompetent fool that created musl keeps __linux__, refuses
24 * to implement any linux standard apis, and also has no way to test
25 * for his broken iplementation. don't complain to me if this fails
26 * for you.
27 */
28#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
29# include <linux/fs.h>
30# ifdef FS_IOC_FIEMAP
31# include <linux/types.h>
32# include <linux/fiemap.h>
33# define HAVE_FIEMAP 1
34# endif
35#endif
36
37/* perl namespace pollution */
38#undef VERSION
39
40/* perl stupidly overrides readdir and maybe others */
41/* with thread-unsafe versions, imagine that :( */
42#undef readdir
43#undef opendir
44#undef closedir
45
18#ifdef _WIN32 46#ifdef _WIN32
19 47
20# define SIGIO 0 48 // perl overrides all those nice libc functions
21 typedef Direntry_t X_DIRENT; 49
22#undef malloc 50 #undef malloc
23#undef free 51 #undef free
24
25// perl overrides all those nice win32 functions
26# undef open 52 #undef open
27# undef read 53 #undef read
28# undef write 54 #undef write
29# undef send 55 #undef send
30# undef recv 56 #undef recv
31# undef stat 57 #undef stat
58 #undef lstat
32# undef fstat 59 #undef fstat
33# define lstat stat
34# undef truncate 60 #undef truncate
35# undef ftruncate 61 #undef ftruncate
36# undef open 62 #undef open
63 #undef link
37# undef close 64 #undef close
38# undef unlink 65 #undef unlink
66 #undef mkdir
39# undef rmdir 67 #undef rmdir
40# undef rename 68 #undef rename
41# undef lseek 69 #undef lseek
70 #undef opendir
71 #undef readdir
72 #undef closedir
73 #undef chmod
74 #undef fchmod
75 #undef dup
76 #undef dup2
77 #undef abort
78 #undef pipe
79 #undef utime
42 80
43# define chown(a,b,c) (errno = ENOSYS, -1) 81 #define EIO_STRUCT_STAT struct _stati64
44# define fchown(a,b,c) (errno = ENOSYS, -1) 82 #define EIO_STRUCT_STATI64
45# define fchmod(a,b) (errno = ENOSYS, -1)
46# define symlink(a,b) (errno = ENOSYS, -1)
47# define readlink(a,b,c) (errno = ENOSYS, -1)
48# define mknod(a,b,c) (errno = ENOSYS, -1)
49# define truncate(a,b) (errno = ENOSYS, -1)
50# define ftruncate(fd,o) chsize ((fd), (o))
51# define fsync(fd) _commit (fd)
52# define opendir(fd) (errno = ENOSYS, 0)
53# define readdir(fd) (errno = ENOSYS, -1)
54# define closedir(fd) (errno = ENOSYS, -1)
55# define mkdir(a,b) mkdir (a)
56 83
57#else 84#else
58 85
59# include "autoconf/config.h"
60# include <sys/time.h> 86 #include <sys/time.h>
61# include <sys/select.h> 87 #include <sys/select.h>
62# include <unistd.h> 88 #include <unistd.h>
63# include <utime.h> 89 #include <utime.h>
64# include <signal.h> 90 #include <signal.h>
65 typedef struct dirent X_DIRENT;
66 91
67#endif 92 #define EIO_STRUCT_STAT Stat_t
68 93
69#if HAVE_SENDFILE 94#endif
70# if __linux 95
71# include <sys/sendfile.h> 96/*****************************************************************************/
72# elif __freebsd 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 "config.h"
110
111#if HAVE_SYS_MKDEV_H
73# include <sys/socket.h> 112# include <sys/mkdev.h>
113#elif HAVE_SYS_SYSMACROS_H
114# include <sys/sysmacros.h>
115#endif
116
117#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
74# include <sys/uio.h> 118# include <sys/mman.h>
75# elif __hpux 119#endif
76# include <sys/socket.h> 120
77# elif __solaris /* not yet */ 121#if HAVE_ST_XTIMENSEC
122# define ATIMENSEC PL_statcache.st_atimensec
123# define MTIMENSEC PL_statcache.st_mtimensec
124# define CTIMENSEC PL_statcache.st_ctimensec
125#elif HAVE_ST_XTIMESPEC
126# define ATIMENSEC PL_statcache.st_atim.tv_nsec
127# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
128# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
129#else
130# define ATIMENSEC 0
131# define MTIMENSEC 0
132# define CTIMENSEC 0
133#endif
134
135#if HAVE_ST_BIRTHTIMENSEC
136# define BTIMESEC PL_statcache.st_birthtime
137# define BTIMENSEC PL_statcache.st_birthtimensec
138#elif HAVE_ST_BIRTHTIMESPEC
139# define BTIMESEC PL_statcache.st_birthtim.tv_sec
140# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
141#else
142# define BTIMESEC 0
143# define BTIMENSEC 0
144#endif
145
146#if HAVE_ST_GEN
147# define ST_GEN PL_statcache.st_gen
148#else
149# define ST_GEN 0
150#endif
151
152#include "schmorp.h"
153
154#if HAVE_EVENTFD
78# include <sys/sendfile.h> 155# include <sys/eventfd.h>
156#endif
157
158#if HAVE_TIMERFD
159# include <sys/timerfd.h>
160#endif
161
162#if HAVE_RLIMITS
163 #include <sys/time.h>
164 #include <sys/resource.h>
165#endif
166
167typedef SV SV8; /* byte-sv, used for argument-checking */
168typedef int aio_rfd; /* read file desriptor */
169typedef int aio_wfd; /* write file descriptor */
170
171static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
172
173#define EIO_REQ_MEMBERS \
174 SV *callback; \
175 SV *sv1, *sv2; \
176 SV *sv3, *sv4; \
177 STRLEN stroffset; \
178 SV *self;
179
180#define EIO_NO_WRAPPERS 1
181
182#include "libeio/eio.h"
183
184static int req_invoke (eio_req *req);
185#define EIO_FINISH(req) req_invoke (req)
186static void req_destroy (eio_req *grp);
187#define EIO_DESTROY(req) req_destroy (req)
188
189#include "libeio/eio.c"
190
191#if !HAVE_POSIX_FADVISE
192# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
193#endif
194
195#if !HAVE_POSIX_MADVISE
196# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
197#endif
198
199#ifndef MAP_ANONYMOUS
200# ifdef MAP_ANON
201# define MAP_ANONYMOUS MAP_ANON
79# else 202# else
80# error sendfile support requested but not available 203# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81# endif 204# endif
82#endif 205#endif
83 206
84/* number of seconds after which idle threads exit */ 207#ifndef makedev
85#define IDLE_TIMEOUT 10 208# define makedev(maj,min) (((maj) << 8) | (min))
86
87/* used for struct dirent, AIX doesn't provide it */
88#ifndef NAME_MAX
89# define NAME_MAX 4096
90#endif 209#endif
91 210#ifndef major
92/* buffer size for various temporary buffers */ 211# define major(dev) ((dev) >> 8)
93#define AIO_BUFSIZE 65536
94
95/* use NV for 32 bit perls as it allows larger offsets */
96#if IVSIZE >= 8
97# define SvVAL64 SvIV
98#else
99# define SvVAL64 SvNV
100#endif 212#endif
213#ifndef minor
214# define minor(dev) ((dev) & 0xff)
215#endif
101 216
102#define dBUF \ 217/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
103 char *aio_buf; \ 218#ifdef __sun
104 X_LOCK (wrklock); \ 219# undef PAGESIZE
105 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 220#endif
106 X_UNLOCK (wrklock); \ 221
107 if (!aio_buf) \ 222#if PAGESIZE <= 0
223# define PAGESIZE sysconf (_SC_PAGESIZE)
224#endif
225
226/*****************************************************************************/
227
228#if !_POSIX_MAPPED_FILES
229# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
230# define munmap(addr,length) EIO_ENOSYS ()
231#endif
232
233#if !_POSIX_MEMORY_PROTECTION
234# define mprotect(addr,len,prot) EIO_ENOSYS ()
235#endif
236
237#if !MREMAP_MAYMOVE
238# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
239#endif
240
241#define FOREIGN_MAGIC PERL_MAGIC_ext
242
243static int ecb_cold
244mmap_free (pTHX_ SV *sv, MAGIC *mg)
245{
246 int old_errno = errno;
247 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
248 errno = old_errno;
249
250 mg->mg_obj = 0; /* just in case */
251
252 SvREADONLY_off (sv);
253
254 if (SvPVX (sv) != mg->mg_ptr)
255 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
256
257 SvCUR_set (sv, 0);
258 SvPVX (sv) = 0;
259 SvOK_off (sv);
260
108 return -1; 261 return 0;
262}
109 263
110typedef SV SV8; /* byte-sv, used for argument-checking */ 264static MGVTBL mmap_vtbl = {
111 265 0, 0, 0, 0, mmap_free
112enum {
113 REQ_QUIT,
114 REQ_OPEN, REQ_CLOSE,
115 REQ_READ, REQ_WRITE,
116 REQ_READAHEAD, REQ_SENDFILE,
117 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118 REQ_TRUNCATE, REQ_FTRUNCATE,
119 REQ_UTIME, REQ_FUTIME,
120 REQ_CHMOD, REQ_FCHMOD,
121 REQ_CHOWN, REQ_FCHOWN,
122 REQ_FSYNC, REQ_FDATASYNC,
123 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124 REQ_MKNOD, REQ_READDIR,
125 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126 REQ_GROUP, REQ_NOP,
127 REQ_BUSY,
128}; 266};
129 267
130#define AIO_REQ_KLASS "IO::AIO::REQ" 268static int ecb_cold
131#define AIO_GRP_KLASS "IO::AIO::GRP" 269sysfree_free (pTHX_ SV *sv, MAGIC *mg)
132
133typedef struct aio_cb
134{ 270{
135 struct aio_cb *volatile next; 271 free (mg->mg_ptr);
272 mg->mg_obj = 0; /* just in case */
136 273
137 SV *callback; 274 SvREADONLY_off (sv);
138 SV *sv1, *sv2;
139 void *ptr1, *ptr2;
140 off_t offs;
141 size_t size;
142 ssize_t result;
143 double nv1, nv2;
144 275
145 STRLEN stroffset; 276 if (SvPVX (sv) != mg->mg_ptr)
146 int type; 277 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
147 int int1, int2, int3;
148 int errorno;
149 mode_t mode; /* open */
150 278
151 unsigned char flags; 279 SvCUR_set (sv, 0);
152 unsigned char pri; 280 SvPVX (sv) = 0;
281 SvOK_off (sv);
153 282
154 SV *self; /* the perl counterpart of this request, if any */ 283 return 0;
155 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 284}
156} aio_cb;
157 285
158enum { 286static MGVTBL sysfree_vtbl = {
159 FLAG_CANCELLED = 0x01, /* request was cancelled */ 287 0, 0, 0, 0, sysfree_free
160 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162}; 288};
163 289
164typedef aio_cb *aio_req; 290/*****************************************************************************/
165typedef aio_cb *aio_req_ornot;
166 291
167enum { 292/* helper: set scalar to foreign ptr with custom free */
168 PRI_MIN = -4, 293static void
169 PRI_MAX = 4, 294sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
170
171 DEFAULT_PRI = 0,
172 PRI_BIAS = -PRI_MIN,
173 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174};
175
176#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178static unsigned int max_poll_time = 0;
179static unsigned int max_poll_reqs = 0;
180
181/* calculcate time difference in ~1/AIO_TICKS of a second */
182static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183{ 295{
184 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 296 sv_force_normal (sv);
185 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
186}
187 297
188static thread_t main_tid; 298 /* we store the length in mg_obj, as namlen is I32 :/ */
189static int main_sig; 299 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
190static int block_sig_level; 300 ->mg_obj = (SV *)length;
191 301
192void block_sig () 302 SvUPGRADE (sv, SVt_PV); /* nop... */
193{
194 sigset_t ss;
195 303
196 if (block_sig_level++) 304 if (SvLEN (sv))
305 Safefree (SvPVX (sv));
306
307 SvPVX (sv) = (char *)addr;
308 SvCUR_set (sv, length);
309 SvLEN_set (sv, 0);
310 SvPOK_only (sv);
311}
312
313static void
314sv_clear_foreign (SV *sv)
315{
316 /* todo: iterate over magic and only free ours, but of course */
317 /* the perl5porters will call that (correct) behaviour buggy */
318 sv_unmagic (sv, FOREIGN_MAGIC);
319}
320
321/*****************************************************************************/
322
323/* defines all sorts of constants to 0 unless they are already defined */
324/* also provides const_iv_ and const_niv_ macros for them */
325#include "def0.h"
326
327/*****************************************************************************/
328
329static void
330fiemap (eio_req *req)
331{
332 req->result = -1;
333
334#if HAVE_FIEMAP
335 /* assume some c99 */
336 struct fiemap *fiemap = 0;
337 size_t end_offset;
338 int count = req->int3;
339
340 req->flags |= EIO_FLAG_PTR1_FREE;
341
342 /* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
343 /* increase in 3.5kb steps */
344 if (count < 0)
345 count = 8;
346
347 fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
348 errno = ENOMEM;
349 if (!fiemap)
197 return; 350 return;
198 351
199 if (!main_sig) 352 req->ptr1 = fiemap;
353
354 fiemap->fm_start = req->offs;
355 fiemap->fm_length = req->size;
356 fiemap->fm_flags = req->int2;
357 fiemap->fm_extent_count = count;
358
359 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
200 return; 360 return;
201 361
202 sigemptyset (&ss); 362 if (req->int3 >= 0 /* not autosizing */
203 sigaddset (&ss, main_sig); 363 || !fiemap->fm_mapped_extents /* no more extents */
204 pthread_sigmask (SIG_BLOCK, &ss, 0); 364 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
205} 365 goto done;
206 366
207void unblock_sig () 367 /* else we have to loop -
208{ 368 * it would be tempting (actually I tried that first) to just query the
209 sigset_t ss; 369 * number of extents needed, but linux often feels like not returning all
370 * extents, without telling us it left any out. this complicates
371 * this quite a bit.
372 */
210 373
211 if (--block_sig_level) 374 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
212 return;
213 375
214 if (!main_sig) 376 for (;;)
215 return;
216
217 sigemptyset (&ss);
218 sigaddset (&ss, main_sig);
219 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220}
221
222static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224static unsigned int started, idle, wanted;
225
226/* worker threads management */
227static mutex_t wrklock = X_MUTEX_INIT;
228
229typedef struct worker {
230 /* locked by wrklock */
231 struct worker *prev, *next;
232
233 thread_t tid;
234
235 /* locked by reslock, reqlock or wrklock */
236 aio_req req; /* currently processed request */
237 void *dbuf;
238 DIR *dirp;
239} worker;
240
241static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243static void worker_clear (worker *wrk)
244{
245 if (wrk->dirp)
246 { 377 {
247 closedir (wrk->dirp); 378 /* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
248 wrk->dirp = 0; 379 char scratch[3072];
249 } 380 struct fiemap *incmap = (struct fiemap *)scratch;
250 381
251 if (wrk->dbuf) 382 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
252 { 383 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
253 free (wrk->dbuf); 384 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
254 wrk->dbuf = 0; 385 incmap->fm_flags = fiemap->fm_flags;
255 } 386 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
256}
257 387
258static void worker_free (worker *wrk) 388 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
259{
260 wrk->next->prev = wrk->prev;
261 wrk->prev->next = wrk->next;
262
263 free (wrk);
264}
265
266static volatile unsigned int nreqs, nready, npending;
267static volatile unsigned int max_idle = 4;
268static volatile unsigned int max_outstanding = 0xffffffff;
269static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271static mutex_t reslock = X_MUTEX_INIT;
272static mutex_t reqlock = X_MUTEX_INIT;
273static cond_t reqwait = X_COND_INIT;
274
275#if WORDACCESS_UNSAFE
276
277static unsigned int get_nready ()
278{
279 unsigned int retval;
280
281 X_LOCK (reqlock);
282 retval = nready;
283 X_UNLOCK (reqlock);
284
285 return retval;
286}
287
288static unsigned int get_npending ()
289{
290 unsigned int retval;
291
292 X_LOCK (reslock);
293 retval = npending;
294 X_UNLOCK (reslock);
295
296 return retval;
297}
298
299static unsigned int get_nthreads ()
300{
301 unsigned int retval;
302
303 X_LOCK (wrklock);
304 retval = started;
305 X_UNLOCK (wrklock);
306
307 return retval;
308}
309
310#else
311
312# define get_nready() nready
313# define get_npending() npending
314# define get_nthreads() started
315
316#endif
317
318/*
319 * a somewhat faster data structure might be nice, but
320 * with 8 priorities this actually needs <20 insns
321 * per shift, the most expensive operation.
322 */
323typedef struct {
324 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325 int size;
326} reqq;
327
328static reqq req_queue;
329static reqq res_queue;
330
331int reqq_push (reqq *q, aio_req req)
332{
333 int pri = req->pri;
334 req->next = 0;
335
336 if (q->qe[pri])
337 {
338 q->qe[pri]->next = req;
339 q->qe[pri] = req;
340 }
341 else
342 q->qe[pri] = q->qs[pri] = req;
343
344 return q->size++;
345}
346
347aio_req reqq_shift (reqq *q)
348{
349 int pri;
350
351 if (!q->size)
352 return 0; 389 return;
353 390
354 --q->size; 391 if (!incmap->fm_mapped_extents)
392 goto done;
355 393
356 for (pri = NUM_PRI; pri--; ) 394 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
357 { 395 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
358 aio_req req = q->qs[pri]; 396 errno = ENOMEM;
359
360 if (req) 397 if (!fiemap)
398 return;
399
400 req->ptr1 = fiemap;
401
402 for (count = 0; count < incmap->fm_mapped_extents; ++count)
361 { 403 {
362 if (!(q->qs[pri] = req->next)) 404 struct fiemap_extent *e = incmap->fm_extents + count;
363 q->qe[pri] = 0;
364 405
365 return req; 406 if (e->fe_logical + e->fe_length >= end_offset)
407 goto done;
408
409 fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
410
411 if (e->fe_flags & FIEMAP_EXTENT_LAST)
412 goto done;
413
366 } 414 }
367 } 415 }
368 416
369 abort (); 417done:
370} 418 req->result = 0;
371 419
372static int poll_cb (); 420#else
373static int req_invoke (aio_req req); 421 errno = ENOSYS;
422#endif
423}
424
425/*****************************************************************************/
426
427static int close_fd; /* dummy fd to close fds via dup2 */
428
429enum {
430 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
431};
432
433typedef eio_req *aio_req;
434typedef eio_req *aio_req_ornot;
435typedef eio_wd aio_wd;
436
437static SV *on_next_submit;
438static int next_pri = EIO_PRI_DEFAULT;
439static int max_outstanding;
440
441static s_epipe respipe;
442
374static void req_destroy (aio_req req); 443static void req_destroy (aio_req req);
375static void req_cancel (aio_req req); 444static void req_cancel (aio_req req);
376 445
446static void
447want_poll (void)
448{
449 /* write a dummy byte to the pipe so fh becomes ready */
450 s_epipe_signal (&respipe);
451}
452
453static void
454done_poll (void)
455{
456 /* read any signals sent by the worker threads */
457 s_epipe_drain (&respipe);
458}
459
377/* must be called at most once */ 460/* must be called at most once */
378static SV *req_sv (aio_req req, const char *klass) 461static SV *
462req_sv (aio_req req, HV *stash)
379{ 463{
380 if (!req->self) 464 if (!req->self)
381 { 465 {
382 req->self = (SV *)newHV (); 466 req->self = (SV *)newHV ();
383 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 467 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384 } 468 }
385 469
386 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 470 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387} 471}
388 472
389static aio_req SvAIO_REQ (SV *sv) 473static SV *
474newSVaio_wd (aio_wd wd)
475{
476 return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
477}
478
479static aio_req
480SvAIO_REQ (SV *sv)
390{ 481{
391 MAGIC *mg; 482 MAGIC *mg;
392 483
393 if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) 484 if (!SvROK (sv)
485 /* for speed reasons, we do not verify that SvROK actually has a stash ptr */
486 || (SvSTASH (SvRV (sv)) != aio_grp_stash
487 && SvSTASH (SvRV (sv)) != aio_req_stash
488 && !sv_derived_from (sv, "IO::AIO::REQ")))
394 croak ("object of class " AIO_REQ_KLASS " expected"); 489 croak ("object of class IO::AIO::REQ expected");
395 490
396 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 491 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397 492
398 return mg ? (aio_req)mg->mg_ptr : 0; 493 return mg ? (aio_req)mg->mg_ptr : 0;
399} 494}
400 495
496static aio_wd
497SvAIO_WD (SV *sv)
498{
499 if (!SvROK (sv)
500 || SvTYPE (SvRV (sv)) != SVt_PVMG
501 || SvSTASH (SvRV (sv)) != aio_wd_stash)
502 croak ("IO::AIO: expected a working directory object as returned by aio_wd");
503
504 return (aio_wd)(long)SvIVX (SvRV (sv));
505}
506
507static SV *
508newmortalFH (int fd, int flags)
509{
510 if (fd < 0)
511 return &PL_sv_undef;
512
513 GV *gv = (GV *)sv_newmortal ();
514 char sym[64];
515 int symlen;
516
517 symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
518 gv_init (gv, aio_stash, sym, symlen, 0);
519
520 symlen = snprintf (
521 sym,
522 sizeof (sym),
523 "%s&=%d",
524 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525 fd
526 );
527
528 return do_open (gv, sym, symlen, 0, 0, 0, 0)
529 ? (SV *)gv : &PL_sv_undef;
530}
531
532static void
401static void aio_grp_feed (aio_req grp) 533aio_grp_feed (aio_req grp)
402{ 534{
403 block_sig (); 535 if (grp->sv2 && SvOK (grp->sv2))
404
405 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406 { 536 {
407 int old_len = grp->size;
408
409 if (grp->sv2 && SvOK (grp->sv2))
410 {
411 dSP; 537 dSP;
412 538
413 ENTER; 539 ENTER;
414 SAVETMPS; 540 SAVETMPS;
415 PUSHMARK (SP); 541 PUSHMARK (SP);
416 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 542 XPUSHs (req_sv (grp, aio_grp_stash));
417 PUTBACK; 543 PUTBACK;
418 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 544 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419 SPAGAIN; 545 SPAGAIN;
420 FREETMPS; 546 FREETMPS;
421 LEAVE; 547 LEAVE;
422 }
423
424 /* stop if no progress has been made */
425 if (old_len == grp->size)
426 {
427 SvREFCNT_dec (grp->sv2);
428 grp->sv2 = 0;
429 break;
430 }
431 } 548 }
432
433 unblock_sig ();
434} 549}
435 550
436static void aio_grp_dec (aio_req grp) 551static void
552req_submit (eio_req *req)
437{ 553{
438 --grp->size; 554 eio_submit (req);
439 555
440 /* call feeder, if applicable */ 556 if (expect_false (on_next_submit))
441 aio_grp_feed (grp);
442
443 /* finish, if done */
444 if (!grp->size && grp->int1)
445 { 557 {
446 block_sig (); 558 dSP;
559 SV *cb = sv_2mortal (on_next_submit);
447 560
448 if (!req_invoke (grp)) 561 on_next_submit = 0;
449 {
450 req_destroy (grp);
451 unblock_sig ();
452 croak (0);
453 }
454 562
455 req_destroy (grp); 563 PUSHMARK (SP);
456 unblock_sig (); 564 PUTBACK;
565 call_sv (cb, G_DISCARD | G_EVAL);
457 } 566 }
458} 567}
459 568
569static int
460static int req_invoke (aio_req req) 570req_invoke (eio_req *req)
461{ 571{
462 dSP;
463
464 if (req->flags & FLAG_SV2_RO_OFF) 572 if (req->flags & FLAG_SV2_RO_OFF)
465 SvREADONLY_off (req->sv2); 573 SvREADONLY_off (req->sv2);
466 574
467 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 575 if (!EIO_CANCELLED (req) && req->callback)
468 { 576 {
577 dSP;
578 static SV *sv_result_cache; /* caches the result integer SV */
579 SV *sv_result;
580
469 ENTER; 581 ENTER;
470 SAVETMPS; 582 SAVETMPS;
471 PUSHMARK (SP); 583 PUSHMARK (SP);
472 EXTEND (SP, 1); 584 EXTEND (SP, 1);
473 585
586 /* do not recreate the result IV from scratch each time */
587 if (expect_true (sv_result_cache))
588 {
589 sv_result = sv_result_cache; sv_result_cache = 0;
590 SvIV_set (sv_result, req->result);
591 SvIOK_only (sv_result);
592 }
593 else
594 {
595 sv_result = newSViv (req->result);
596 SvREADONLY_on (sv_result);
597 }
598
474 switch (req->type) 599 switch (req->type)
475 { 600 {
601 case EIO_WD_OPEN:
602 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
603 break;
604
476 case REQ_READDIR: 605 case EIO_READDIR:
477 { 606 {
478 SV *rv = &PL_sv_undef; 607 SV *rv = &PL_sv_undef;
479 608
480 if (req->result >= 0) 609 if (req->result >= 0)
481 { 610 {
482 int i; 611 int i;
483 char *buf = req->ptr2; 612 char *names = (char *)req->ptr2;
613 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484 AV *av = newAV (); 614 AV *av = newAV ();
485 615
486 av_extend (av, req->result - 1); 616 av_extend (av, req->result - 1);
487 617
488 for (i = 0; i < req->result; ++i) 618 for (i = 0; i < req->result; ++i)
489 { 619 {
490 SV *sv = newSVpv (buf, 0); 620 if (req->int1 & EIO_READDIR_DENTS)
621 {
622 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491 623
624 if (req->int1 & EIO_READDIR_CUSTOM2)
625 {
626 static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
627 AV *avent = newAV ();
628
629 av_extend (avent, 2);
630
631 if (!sv_type [ent->type])
632 {
633 sv_type [ent->type] = newSViv (ent->type);
634 SvREADONLY_on (sv_type [ent->type]);
635 }
636
637 av_store (avent, 0, namesv);
638 av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
639 av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
640
641 av_store (av, i, newRV_noinc ((SV *)avent));
642 }
643 else
492 av_store (av, i, sv); 644 av_store (av, i, namesv);
645
646 ++ent;
647 }
648 else
649 {
650 SV *name = newSVpv (names, 0);
651 av_store (av, i, name);
493 buf += SvCUR (sv) + 1; 652 names += SvCUR (name) + 1;
653 }
494 } 654 }
495 655
496 rv = sv_2mortal (newRV_noinc ((SV *)av)); 656 rv = sv_2mortal (newRV_noinc ((SV *)av));
497 } 657 }
498 658
499 PUSHs (rv); 659 PUSHs (rv);
660
661 if (req->int1 & EIO_READDIR_CUSTOM1)
662 XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500 } 663 }
501 break; 664 break;
502 665
503 case REQ_OPEN: 666 case EIO_OPEN:
667 PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
668 break;
669
670 case EIO_STATVFS:
671 case EIO_FSTATVFS:
504 { 672 {
505 /* convert fd to fh */ 673 SV *rv = &PL_sv_undef;
506 SV *fh; 674
675#ifndef _WIN32
676 if (req->result >= 0)
677 {
678 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
679 HV *hv = newHV ();
680 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
681 * chooses to make it a struct.
682 */
683 unsigned long fsid = 0;
684 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
507 685
508 PUSHs (sv_2mortal (newSViv (req->result))); 686 rv = sv_2mortal (newRV_noinc ((SV *)hv));
509 PUTBACK;
510 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
511 SPAGAIN;
512 687
513 fh = POPs; 688 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
514 PUSHMARK (SP); 689 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
690 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
691 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
692 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
693 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
694 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
695 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
696 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
697 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
698 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
699 }
700#endif
701
515 XPUSHs (fh); 702 PUSHs (rv);
516 } 703 }
704
517 break; 705 break;
518 706
519 case REQ_GROUP: 707 case EIO_GROUP:
520 req->int1 = 2; /* mark group as finished */ 708 req->int1 = 2; /* mark group as finished */
521 709
522 if (req->sv1) 710 if (req->sv1)
523 { 711 {
524 int i; 712 int i;
… …
528 for (i = 0; i <= AvFILL (av); ++i) 716 for (i = 0; i <= AvFILL (av); ++i)
529 PUSHs (*av_fetch (av, i, 0)); 717 PUSHs (*av_fetch (av, i, 0));
530 } 718 }
531 break; 719 break;
532 720
533 case REQ_NOP: 721 case EIO_NOP:
534 case REQ_BUSY: 722 case EIO_BUSY:
535 break; 723 break;
536 724
537 case REQ_READLINK: 725 case EIO_READLINK:
726 case EIO_REALPATH:
538 if (req->result > 0) 727 if (req->result > 0)
728 PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
729 break;
730
731 case EIO_STAT:
732 case EIO_LSTAT:
733 case EIO_FSTAT:
734 PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
735
736 if (!(PL_laststatval = req->result))
737 /* if compilation fails here then perl's Stat_t is not struct _stati64 */
738 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
739
740 PUSHs (sv_result);
741 break;
742
743 case EIO_SEEK:
744 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
745 break;
746
747 case EIO_READ:
748 {
749 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
750 *SvEND (req->sv2) = 0;
751 SvPOK_only (req->sv2);
752 SvSETMAGIC (req->sv2);
753 PUSHs (sv_result);
754 }
755 break;
756
757 case EIO_SLURP:
758 {
759 if (req->result >= 0)
760 {
761 /* if length was originally not known, we steal the malloc'ed memory */
762 if (req->flags & EIO_FLAG_PTR2_FREE)
763 {
764 req->flags &= ~EIO_FLAG_PTR2_FREE;
765 sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
766 }
767 else
768 {
769 SvCUR_set (req->sv2, req->result);
770 *SvEND (req->sv2) = 0;
771 SvPOK_only (req->sv2);
772 }
773
774 SvSETMAGIC (req->sv2);
775 }
776
777 PUSHs (sv_result);
778 }
779 break;
780
781 case EIO_CUSTOM:
782 if (req->feed == fiemap)
539 { 783 {
540 SvCUR_set (req->sv2, req->result); 784#if HAVE_FIEMAP
541 *SvEND (req->sv2) = 0;
542 PUSHs (req->sv2); 785 if (!req->result)
786 {
787 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
788
789 if (fiemap->fm_extent_count)
790 {
791 AV *av = newAV ();
792 int i;
793
794 while (fiemap->fm_mapped_extents)
795 {
796 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
797 AV *ext_av = newAV ();
798
799 av_store (ext_av, 3, newSVuv (extent->fe_flags));
800 av_store (ext_av, 2, newSVval64 (extent->fe_length));
801 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
802 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
803
804 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
805 }
806
807 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
808 }
809 else
810 {
811 SvIV_set (sv_result, fiemap->fm_mapped_extents);
812 PUSHs (sv_result);
813 }
814 }
815#endif
543 } 816 }
817 else
818 PUSHs (sv_result);
544 break; 819 break;
545 820
546 case REQ_STAT: 821 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
547 case REQ_LSTAT: 822 if (req->result > 0)
548 case REQ_FSTAT: 823 SvIV_set (sv_result, 0);
549 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 824 /* FALLTHROUGH */
550 PL_laststatval = req->result;
551 PL_statcache = *(Stat_t *)(req->ptr2);
552 PUSHs (sv_2mortal (newSViv (req->result)));
553 break;
554
555 case REQ_READ:
556 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557 *SvEND (req->sv2) = 0;
558 PUSHs (sv_2mortal (newSViv (req->result)));
559 break;
560 825
561 default: 826 default:
562 PUSHs (sv_2mortal (newSViv (req->result))); 827 PUSHs (sv_result);
563 break; 828 break;
564 } 829 }
565 830
566 errno = req->errorno; 831 errno = req->errorno;
567 832
568 PUTBACK; 833 PUTBACK;
569 call_sv (req->callback, G_VOID | G_EVAL); 834 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570 SPAGAIN; 835 SPAGAIN;
836
837 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
838 SvREFCNT_dec (sv_result);
839 else
840 sv_result_cache = sv_result;
571 841
572 FREETMPS; 842 FREETMPS;
573 LEAVE; 843 LEAVE;
844
845 PUTBACK;
574 } 846 }
575 847
576 if (req->grp)
577 {
578 aio_req grp = req->grp;
579
580 /* unlink request */
581 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584 if (grp->grp_first == req)
585 grp->grp_first = req->grp_next;
586
587 aio_grp_dec (grp);
588 }
589
590 return !SvTRUE (ERRSV); 848 return !!SvTRUE (ERRSV);
591} 849}
592 850
851static void
593static void req_destroy (aio_req req) 852req_destroy (aio_req req)
594{ 853{
595 if (req->self) 854 if (req->self)
596 { 855 {
597 sv_unmagic (req->self, PERL_MAGIC_ext); 856 sv_unmagic (req->self, PERL_MAGIC_ext);
598 SvREFCNT_dec (req->self); 857 SvREFCNT_dec (req->self);
599 } 858 }
600 859
601 SvREFCNT_dec (req->sv1); 860 SvREFCNT_dec (req->sv1);
602 SvREFCNT_dec (req->sv2); 861 SvREFCNT_dec (req->sv2);
862 SvREFCNT_dec (req->sv3);
863 SvREFCNT_dec (req->sv4);
603 SvREFCNT_dec (req->callback); 864 SvREFCNT_dec (req->callback);
604 865
605 if (req->flags & FLAG_PTR2_FREE)
606 free (req->ptr2);
607
608 Safefree (req); 866 free (req);
609} 867}
610 868
869static void
611static void req_cancel_subs (aio_req grp) 870req_cancel_subs (aio_req grp)
612{ 871{
613 aio_req sub;
614
615 if (grp->type != REQ_GROUP) 872 if (grp->type != EIO_GROUP)
616 return; 873 return;
617 874
618 SvREFCNT_dec (grp->sv2); 875 SvREFCNT_dec (grp->sv2);
619 grp->sv2 = 0; 876 grp->sv2 = 0;
620 877
621 for (sub = grp->grp_first; sub; sub = sub->grp_next) 878 eio_grp_cancel (grp);
622 req_cancel (sub);
623} 879}
624 880
625static void req_cancel (aio_req req) 881static void ecb_cold
882create_respipe (void)
626{ 883{
627 req->flags |= FLAG_CANCELLED; 884 if (s_epipe_renew (&respipe))
628 885 croak ("IO::AIO: unable to initialize result pipe");
629 req_cancel_subs (req);
630} 886}
631
632#ifdef USE_SOCKETS_AS_HANDLES
633# define TO_SOCKET(x) (win32_get_osfhandle (x))
634#else
635# define TO_SOCKET(x) (x)
636#endif
637 887
638static void 888static void
639create_respipe () 889poll_wait (void)
640{ 890{
641 int old_readfd = respipe [0];
642
643 if (respipe [1] >= 0)
644 respipe_close (TO_SOCKET (respipe [1]));
645
646#ifdef _WIN32
647 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648#else
649 if (pipe (respipe))
650#endif
651 croak ("unable to initialize result pipe");
652
653 if (old_readfd >= 0)
654 {
655 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656 croak ("unable to initialize result pipe(2)");
657
658 respipe_close (respipe [0]);
659 respipe [0] = old_readfd;
660 }
661
662#ifdef _WIN32
663 int arg = 1;
664 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666#else
667 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669#endif
670 croak ("unable to initialize result pipe(3)");
671
672 respipe_osf [0] = TO_SOCKET (respipe [0]);
673 respipe_osf [1] = TO_SOCKET (respipe [1]);
674}
675
676X_THREAD_PROC (aio_proc);
677
678static void start_thread (void)
679{
680 worker *wrk = calloc (1, sizeof (worker));
681
682 if (!wrk)
683 croak ("unable to allocate worker thread data");
684
685 X_LOCK (wrklock);
686
687 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688 {
689 wrk->prev = &wrk_first;
690 wrk->next = wrk_first.next;
691 wrk_first.next->prev = wrk;
692 wrk_first.next = wrk;
693 ++started;
694 }
695 else
696 free (wrk);
697
698 X_UNLOCK (wrklock);
699}
700
701static void maybe_start_thread ()
702{
703 if (get_nthreads () >= wanted)
704 return;
705
706 /* todo: maybe use idle here, but might be less exact */
707 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708 return;
709
710 start_thread ();
711}
712
713static void req_send (aio_req req)
714{
715 block_sig ();
716
717 ++nreqs;
718
719 X_LOCK (reqlock);
720 ++nready;
721 reqq_push (&req_queue, req);
722 X_COND_SIGNAL (reqwait);
723 X_UNLOCK (reqlock);
724
725 unblock_sig ();
726
727 maybe_start_thread ();
728}
729
730static void end_thread (void)
731{
732 aio_req req;
733
734 Newz (0, req, 1, aio_cb);
735
736 req->type = REQ_QUIT;
737 req->pri = PRI_MAX + PRI_BIAS;
738
739 X_LOCK (reqlock);
740 reqq_push (&req_queue, req);
741 X_COND_SIGNAL (reqwait);
742 X_UNLOCK (reqlock);
743
744 X_LOCK (wrklock);
745 --started;
746 X_UNLOCK (wrklock);
747}
748
749static void set_max_idle (int nthreads)
750{
751 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752 max_idle = nthreads <= 0 ? 1 : nthreads;
753 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754}
755
756static void min_parallel (int nthreads)
757{
758 if (wanted < nthreads)
759 wanted = nthreads;
760}
761
762static void max_parallel (int nthreads)
763{
764 if (wanted > nthreads)
765 wanted = nthreads;
766
767 while (started > wanted)
768 end_thread ();
769}
770
771static void poll_wait ()
772{
773 fd_set rfd;
774
775 while (nreqs) 891 while (eio_nreqs ())
776 { 892 {
777 int size; 893 int size;
778 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 894
895 X_LOCK (EIO_POOL->reslock);
779 size = res_queue.size; 896 size = EIO_POOL->res_queue.size;
780 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 897 X_UNLOCK (EIO_POOL->reslock);
781 898
782 if (size) 899 if (size)
783 return; 900 return;
784 901
785 maybe_start_thread (); 902 etp_maybe_start_thread (EIO_POOL);
786 903
787 FD_ZERO (&rfd); 904 s_epipe_wait (&respipe);
788 FD_SET (respipe [0], &rfd);
789
790 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791 } 905 }
792} 906}
793 907
794static int poll_cb () 908static int
909poll_cb (void)
795{ 910{
796 dSP;
797 int count = 0;
798 int maxreqs = max_poll_reqs;
799 int do_croak = 0;
800 struct timeval tv_start, tv_now;
801 aio_req req;
802
803 if (max_poll_time)
804 gettimeofday (&tv_start, 0);
805
806 block_sig ();
807
808 for (;;) 911 for (;;)
809 { 912 {
810 for (;;) 913 int res = eio_poll ();
914
915 if (res > 0)
916 croak (0);
917
918 if (!max_outstanding || max_outstanding > eio_nreqs ())
919 return res;
920
921 poll_wait ();
922 }
923}
924
925static void ecb_cold
926reinit (void)
927{
928 create_respipe ();
929
930 if (eio_init (want_poll, done_poll) < 0)
931 croak ("IO::AIO: unable to initialise eio library");
932}
933
934/*****************************************************************************/
935
936static SV *
937get_cb (SV *cb_sv)
938{
939 SvGETMAGIC (cb_sv);
940 return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
941}
942
943static aio_req ecb_noinline
944dreq (SV *callback)
945{
946 SV *cb_cv;
947 aio_req req;
948 int req_pri = next_pri;
949 next_pri = EIO_PRI_DEFAULT;
950
951 cb_cv = get_cb (callback);
952
953 req = calloc (sizeof (*req), 1);
954 if (!req)
955 croak ("out of memory during eio_req allocation");
956
957 req->callback = SvREFCNT_inc (cb_cv);
958 req->pri = req_pri;
959
960 return req;
961}
962
963#define dREQ \
964 aio_req req = dreq (callback); \
965
966#define REQ_SEND \
967 PUTBACK; \
968 req_submit (req); \
969 SPAGAIN; \
970 \
971 if (GIMME_V != G_VOID) \
972 XPUSHs (req_sv (req, aio_req_stash));
973
974ecb_inline void
975req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
976{
977 if (expect_false (SvROK (path)))
978 {
979 SV *rv = SvRV (path);
980 SV *wdob;
981
982 if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
811 { 983 {
812 maybe_start_thread (); 984 path = AvARRAY (rv)[1];
985 wdob = AvARRAY (rv)[0];
813 986
814 X_LOCK (reslock); 987 if (SvOK (wdob))
815 req = reqq_shift (&res_queue);
816
817 if (req)
818 { 988 {
819 --npending; 989 *wd = SvAIO_WD (wdob);
820 990 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
821 if (!res_queue.size)
822 {
823 /* read any signals sent by the worker threads */
824 char buf [4];
825 while (respipe_read (respipe [0], buf, 4) == 4)
826 ;
827 }
828 }
829
830 X_UNLOCK (reslock);
831
832 if (!req)
833 break;
834
835 --nreqs;
836
837 if (req->type == REQ_GROUP && req->size)
838 {
839 req->int1 = 1; /* mark request as delayed */
840 continue;
841 } 991 }
842 else 992 else
843 { 993 *wd = EIO_INVALID_WD;
844 if (!req_invoke (req))
845 {
846 req_destroy (req);
847 unblock_sig ();
848 croak (0);
849 }
850
851 count++;
852 }
853
854 req_destroy (req);
855
856 if (maxreqs && !--maxreqs)
857 break;
858
859 if (max_poll_time)
860 {
861 gettimeofday (&tv_now, 0);
862
863 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864 break;
865 }
866 } 994 }
995 else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
996 {
997 *wd = (aio_wd)(long)SvIVX (rv);
998 *wdsv = SvREFCNT_inc_NN (rv);
999 *ptr = ".";
1000 return; /* path set to "." */
1001 }
1002 else
1003 croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
1004 }
867 1005
868 if (nreqs <= max_outstanding) 1006 *pathsv = newSVsv (path);
1007 *ptr = SvPVbyte_nolen (*pathsv);
1008}
1009
1010static void ecb_noinline
1011req_set_path1 (aio_req req, SV *path)
1012{
1013 req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
1014}
1015
1016static void ecb_noinline
1017req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
1018{
1019 SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
1020
1021 switch (SvTYPE (rv))
1022 {
1023 case SVt_PVIO:
1024 case SVt_PVLV:
1025 case SVt_PVGV:
1026 req->type = type_fh;
1027 req->sv1 = newSVsv (fh_or_path);
1028 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
869 break; 1029 break;
870 1030
871 poll_wait (); 1031 default:
872 1032 req->type = type_path;
873 ++maxreqs; 1033 req_set_path1 (req, fh_or_path);
1034 break;
874 } 1035 }
875
876 unblock_sig ();
877 return count;
878} 1036}
879 1037
880/*****************************************************************************/ 1038/*****************************************************************************/
881/* work around various missing functions */
882 1039
883#if !HAVE_PREADWRITE 1040static void
884# define pread aio_pread 1041ts_set (struct timespec *ts, NV value)
885# define pwrite aio_pwrite
886
887/*
888 * make our pread/pwrite safe against themselves, but not against
889 * normal read/write by using a mutex. slows down execution a lot,
890 * but that's your problem, not mine.
891 */
892static mutex_t preadwritelock = X_MUTEX_INIT;
893
894static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895{ 1042{
896 ssize_t res; 1043 ts->tv_sec = value;
897 off_t ooffset; 1044 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
898
899 X_LOCK (preadwritelock);
900 ooffset = lseek (fd, 0, SEEK_CUR);
901 lseek (fd, offset, SEEK_SET);
902 res = read (fd, buf, count);
903 lseek (fd, ooffset, SEEK_SET);
904 X_UNLOCK (preadwritelock);
905
906 return res;
907} 1045}
908 1046
909static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1047static NV
1048ts_get (const struct timespec *ts)
910{ 1049{
911 ssize_t res; 1050 return ts->tv_sec + ts->tv_nsec * 1e-9;
912 off_t ooffset;
913
914 X_LOCK (preadwritelock);
915 ooffset = lseek (fd, 0, SEEK_CUR);
916 lseek (fd, offset, SEEK_SET);
917 res = write (fd, buf, count);
918 lseek (fd, offset, SEEK_SET);
919 X_UNLOCK (preadwritelock);
920
921 return res;
922} 1051}
923#endif
924 1052
925#ifndef HAVE_FUTIMES 1053/*****************************************************************************/
926 1054
927# define utimes(path,times) aio_utimes (path, times) 1055XS(boot_IO__AIO) ecb_cold;
928# define futimes(fd,times) aio_futimes (fd, times)
929 1056
930int aio_utimes (const char *filename, const struct timeval times[2]) 1057MODULE = IO::AIO PACKAGE = IO::AIO
931{
932 if (times)
933 {
934 struct utimbuf buf;
935 1058
936 buf.actime = times[0].tv_sec; 1059PROTOTYPES: ENABLE
937 buf.modtime = times[1].tv_sec;
938 1060
939 return utime (filename, &buf); 1061BOOT:
940 }
941 else
942 return utime (filename, 0);
943}
944
945int aio_futimes (int fd, const struct timeval tv[2])
946{ 1062{
947 errno = ENOSYS; 1063 static const struct {
948 return -1; 1064 const char *name;
949} 1065 IV iv;
1066 } *civ, const_iv[] = {
1067# define const_niv(name, value) { # name, (IV) value },
1068# define const_iv(name) { # name, (IV) name },
1069# define const_eio(name) { # name, (IV) EIO_ ## name },
950 1070
951#endif 1071 /* you have to re-run ./gendef0 after adding/removing any constants here */
1072 /* the first block can be undef if missing */
1073 const_iv (ENOSYS)
1074 const_iv (EXDEV)
1075 const_iv (EBADR)
952 1076
953#if !HAVE_FDATASYNC 1077 /* for lseek */
954# define fdatasync fsync 1078 const_iv (SEEK_DATA)
955#endif 1079 const_iv (SEEK_HOLE)
956 1080
957#if !HAVE_READAHEAD 1081 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
958# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) 1082 const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
1083 const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
1084 const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
1085 const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
1086 const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
959 1087
960static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1088 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
961{ 1089 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
962 size_t todo = count; 1090 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
963 dBUF; 1091 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1092 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
964 1093
965 while (todo > 0) 1094 /* the second block will be 0 when missing */
966 { 1095 const_iv (O_ACCMODE)
967 size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968 1096
969 pread (fd, aio_buf, len, offset); 1097 const_iv (O_RDONLY)
970 offset += len; 1098 const_iv (O_WRONLY)
971 todo -= len; 1099 const_iv (O_RDWR)
972 } 1100 const_iv (O_CREAT)
1101 const_iv (O_TRUNC)
1102 const_iv (O_EXCL)
1103 const_iv (O_APPEND)
973 1104
974 errno = 0; 1105 const_iv (O_ASYNC)
975 return count; 1106 const_iv (O_DIRECT)
976} 1107 const_iv (O_NOATIME)
977 1108
978#endif 1109 const_iv (O_CLOEXEC)
1110 const_iv (O_NOCTTY)
1111 const_iv (O_NOFOLLOW)
1112 const_iv (O_NONBLOCK)
1113 const_iv (O_EXEC)
1114 const_iv (O_SEARCH)
1115 const_iv (O_DIRECTORY)
1116 const_iv (O_DSYNC)
1117 const_iv (O_RSYNC)
1118 const_iv (O_SYNC)
1119 const_iv (O_PATH)
1120 const_iv (O_TMPFILE)
1121 const_iv (O_TTY_INIT)
979 1122
980#if !HAVE_READDIR_R 1123 const_iv (S_IFIFO)
981# define readdir_r aio_readdir_r 1124 const_iv (S_IFCHR)
1125 const_iv (S_IFBLK)
1126 const_iv (S_IFLNK)
1127 const_iv (S_IFREG)
1128 const_iv (S_IFDIR)
1129 const_iv (S_IFWHT)
1130 const_iv (S_IFSOCK)
1131 const_iv (S_IFMT)
982 1132
983static mutex_t readdirlock = X_MUTEX_INIT; 1133 const_iv (ST_RDONLY)
984 1134 const_iv (ST_NOSUID)
985static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res) 1135 const_iv (ST_NODEV)
986{ 1136 const_iv (ST_NOEXEC)
987 X_DIRENT *e; 1137 const_iv (ST_SYNCHRONOUS)
988 int errorno; 1138 const_iv (ST_MANDLOCK)
1139 const_iv (ST_WRITE)
1140 const_iv (ST_APPEND)
1141 const_iv (ST_IMMUTABLE)
1142 const_iv (ST_NOATIME)
1143 const_iv (ST_NODIRATIME)
1144 const_iv (ST_RELATIME)
989 1145
990 X_LOCK (readdirlock); 1146 const_iv (PROT_NONE)
1147 const_iv (PROT_EXEC)
1148 const_iv (PROT_READ)
1149 const_iv (PROT_WRITE)
991 1150
992 e = readdir (dirp); 1151 const_iv (MAP_PRIVATE)
993 errorno = errno; 1152 const_iv (MAP_SHARED)
1153 const_iv (MAP_FIXED)
1154 const_iv (MAP_ANONYMOUS)
994 1155
995 if (e) 1156 /* linuxish */
996 { 1157 const_iv (MAP_LOCKED)
997 *res = ent; 1158 const_iv (MAP_NORESERVE)
998 strcpy (ent->d_name, e->d_name); 1159 const_iv (MAP_POPULATE)
999 } 1160 const_iv (MAP_NONBLOCK)
1000 else 1161 const_iv (MAP_GROWSDOWN)
1001 *res = 0; 1162 const_iv (MAP_32BIT)
1163 const_iv (MAP_HUGETLB)
1164 const_iv (MAP_STACK)
1002 1165
1003 X_UNLOCK (readdirlock); 1166 const_iv (MREMAP_MAYMOVE)
1167 const_iv (MREMAP_FIXED)
1004 1168
1005 errno = errorno; 1169 const_iv (F_DUPFD_CLOEXEC)
1006 return e ? 0 : -1;
1007}
1008#endif
1009 1170
1010/* sendfile always needs emulation */ 1171 const_iv (MSG_CMSG_CLOEXEC)
1011static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1172 const_iv (SOCK_CLOEXEC)
1012{
1013 ssize_t res;
1014 1173
1015 if (!count) 1174 const_iv (F_OFD_GETLK)
1016 return 0; 1175 const_iv (F_OFD_SETLK)
1176 const_iv (F_OFD_GETLKW)
1017 1177
1018#if HAVE_SENDFILE 1178 const_iv (FIFREEZE)
1019# if __linux 1179 const_iv (FITHAW)
1020 res = sendfile (ofd, ifd, &offset, count); 1180 const_iv (FITRIM)
1181 const_iv (FICLONE)
1182 const_iv (FICLONERANGE)
1183 const_iv (FIDEDUPERANGE)
1021 1184
1022# elif __freebsd 1185 const_iv (FS_IOC_GETFLAGS)
1023 /* 1186 const_iv (FS_IOC_SETFLAGS)
1024 * Of course, the freebsd sendfile is a dire hack with no thoughts 1187 const_iv (FS_IOC_GETVERSION)
1025 * wasted on making it similar to other I/O functions. 1188 const_iv (FS_IOC_SETVERSION)
1026 */ 1189 const_iv (FS_IOC_FIEMAP)
1190 const_iv (FS_IOC_FSGETXATTR)
1191 const_iv (FS_IOC_FSSETXATTR)
1192 const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
1193 const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
1194 const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
1195
1196 const_iv (FS_KEY_DESCRIPTOR_SIZE)
1197
1198 const_iv (FS_SECRM_FL)
1199 const_iv (FS_UNRM_FL)
1200 const_iv (FS_COMPR_FL)
1201 const_iv (FS_SYNC_FL)
1202 const_iv (FS_IMMUTABLE_FL)
1203 const_iv (FS_APPEND_FL)
1204 const_iv (FS_NODUMP_FL)
1205 const_iv (FS_NOATIME_FL)
1206 const_iv (FS_DIRTY_FL)
1207 const_iv (FS_COMPRBLK_FL)
1208 const_iv (FS_NOCOMP_FL)
1209 const_iv (FS_ENCRYPT_FL)
1210 const_iv (FS_BTREE_FL)
1211 const_iv (FS_INDEX_FL)
1212 const_iv (FS_JOURNAL_DATA_FL)
1213 const_iv (FS_NOTAIL_FL)
1214 const_iv (FS_DIRSYNC_FL)
1215 const_iv (FS_TOPDIR_FL)
1216 const_iv (FS_FL_USER_MODIFIABLE)
1217
1218 const_iv (FS_XFLAG_REALTIME)
1219 const_iv (FS_XFLAG_PREALLOC)
1220 const_iv (FS_XFLAG_IMMUTABLE)
1221 const_iv (FS_XFLAG_APPEND)
1222 const_iv (FS_XFLAG_SYNC)
1223 const_iv (FS_XFLAG_NOATIME)
1224 const_iv (FS_XFLAG_NODUMP)
1225 const_iv (FS_XFLAG_RTINHERIT)
1226 const_iv (FS_XFLAG_PROJINHERIT)
1227 const_iv (FS_XFLAG_NOSYMLINKS)
1228 const_iv (FS_XFLAG_EXTSIZE)
1229 const_iv (FS_XFLAG_EXTSZINHERIT)
1230 const_iv (FS_XFLAG_NODEFRAG)
1231 const_iv (FS_XFLAG_FILESTREAM)
1232 const_iv (FS_XFLAG_DAX)
1233 const_iv (FS_XFLAG_HASATTR)
1234
1235 const_iv (FIEMAP_FLAG_SYNC)
1236 const_iv (FIEMAP_FLAG_XATTR)
1237 const_iv (FIEMAP_FLAGS_COMPAT)
1238 const_iv (FIEMAP_EXTENT_LAST)
1239 const_iv (FIEMAP_EXTENT_UNKNOWN)
1240 const_iv (FIEMAP_EXTENT_DELALLOC)
1241 const_iv (FIEMAP_EXTENT_ENCODED)
1242 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
1243 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
1244 const_iv (FIEMAP_EXTENT_DATA_INLINE)
1245 const_iv (FIEMAP_EXTENT_DATA_TAIL)
1246 const_iv (FIEMAP_EXTENT_UNWRITTEN)
1247 const_iv (FIEMAP_EXTENT_MERGED)
1248 const_iv (FIEMAP_EXTENT_SHARED)
1249
1250 const_iv (SPLICE_F_MOVE)
1251 const_iv (SPLICE_F_NONBLOCK)
1252 const_iv (SPLICE_F_MORE)
1253 const_iv (SPLICE_F_GIFT)
1254
1255 const_iv (EFD_CLOEXEC)
1256 const_iv (EFD_NONBLOCK)
1257 const_iv (EFD_SEMAPHORE)
1258
1259 const_iv (CLOCK_REALTIME)
1260 const_iv (CLOCK_MONOTONIC)
1261 const_iv (CLOCK_BOOTTIME)
1262 const_iv (CLOCK_REALTIME_ALARM)
1263 const_iv (CLOCK_BOOTTIME_ALARM)
1264
1265 const_iv (TFD_NONBLOCK)
1266 const_iv (TFD_CLOEXEC)
1267
1268 const_iv (TFD_TIMER_ABSTIME)
1269 const_iv (TFD_TIMER_CANCEL_ON_SET)
1270
1271 /* these are libeio constants, and are independent of gendef0 */
1272 const_eio (SEEK_SET)
1273 const_eio (SEEK_CUR)
1274 const_eio (SEEK_END)
1275
1276 const_eio (MCL_FUTURE)
1277 const_eio (MCL_CURRENT)
1278 const_eio (MCL_ONFAULT)
1279
1280 const_eio (MS_ASYNC)
1281 const_eio (MS_INVALIDATE)
1282 const_eio (MS_SYNC)
1283
1284 const_eio (MT_MODIFY)
1285
1286 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1287 const_eio (SYNC_FILE_RANGE_WRITE)
1288 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1289
1290 const_eio (FALLOC_FL_KEEP_SIZE)
1291 const_eio (FALLOC_FL_PUNCH_HOLE)
1292 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1293 const_eio (FALLOC_FL_ZERO_RANGE)
1294 const_eio (FALLOC_FL_INSERT_RANGE)
1295 const_eio (FALLOC_FL_UNSHARE_RANGE)
1296
1297 const_eio (RENAME_NOREPLACE)
1298 const_eio (RENAME_EXCHANGE)
1299 const_eio (RENAME_WHITEOUT)
1300
1301 const_eio (READDIR_DENTS)
1302 const_eio (READDIR_DIRS_FIRST)
1303 const_eio (READDIR_STAT_ORDER)
1304 const_eio (READDIR_FOUND_UNKNOWN)
1305
1306 const_eio (DT_UNKNOWN)
1307 const_eio (DT_FIFO)
1308 const_eio (DT_CHR)
1309 const_eio (DT_DIR)
1310 const_eio (DT_BLK)
1311 const_eio (DT_REG)
1312 const_eio (DT_LNK)
1313 const_eio (DT_SOCK)
1314 const_eio (DT_WHT)
1315 };
1316
1317 aio_stash = gv_stashpv ("IO::AIO" , 1);
1318 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1319 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1320 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1321
1322 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1323 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1324
1325 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1326
1327 /* allocate dummy pipe fd for aio_close */
1027 { 1328 {
1028 off_t sbytes; 1329 int pipefd [2];
1029 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030 1330
1031 if (res < 0 && sbytes) 1331 if (
1032 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1332#ifdef _WIN32
1033 res = sbytes; 1333 _pipe (pipefd, 1, _O_BINARY) < 0
1334#else
1335 pipe (pipefd) < 0
1336 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1337#endif
1338 || close (pipefd [1]) < 0
1339 )
1340 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1341
1342 close_fd = pipefd [0];
1034 } 1343 }
1035 1344
1036# elif __hpux 1345 reinit ();
1037 res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039# elif __solaris
1040 {
1041 struct sendfilevec vec;
1042 size_t sbytes;
1043
1044 vec.sfv_fd = ifd;
1045 vec.sfv_flag = 0;
1046 vec.sfv_off = offset;
1047 vec.sfv_len = count;
1048
1049 res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051 if (res < 0 && sbytes)
1052 res = sbytes;
1053 }
1054
1055# endif
1056#else
1057 res = -1;
1058 errno = ENOSYS;
1059#endif
1060
1061 if (res < 0
1062 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063#if __solaris
1064 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065#endif
1066 )
1067 )
1068 {
1069 /* emulate sendfile. this is a major pain in the ass */
1070 dBUF;
1071
1072 res = 0;
1073
1074 while (count)
1075 {
1076 ssize_t cnt;
1077
1078 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079
1080 if (cnt <= 0)
1081 {
1082 if (cnt && !res) res = -1;
1083 break;
1084 }
1085
1086 cnt = write (ofd, aio_buf, cnt);
1087
1088 if (cnt <= 0)
1089 {
1090 if (cnt && !res) res = -1;
1091 break;
1092 }
1093
1094 offset += cnt;
1095 res += cnt;
1096 count -= cnt;
1097 }
1098 }
1099
1100 return res;
1101} 1346}
1102 1347
1103/* read a full directory */
1104static void scandir_ (aio_req req, worker *self)
1105{
1106 DIR *dirp;
1107 union
1108 {
1109 X_DIRENT d;
1110 char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111 } *u;
1112 X_DIRENT *entp;
1113 char *name, *names;
1114 int memlen = 4096;
1115 int memofs = 0;
1116 int res = 0;
1117
1118 X_LOCK (wrklock);
1119 self->dirp = dirp = opendir (req->ptr1);
1120 self->dbuf = u = malloc (sizeof (*u));
1121 req->flags |= FLAG_PTR2_FREE;
1122 req->ptr2 = names = malloc (memlen);
1123 X_UNLOCK (wrklock);
1124
1125 if (dirp && u && names)
1126 for (;;)
1127 {
1128 errno = 0;
1129 readdir_r (dirp, &u->d, &entp);
1130
1131 if (!entp)
1132 break;
1133
1134 name = entp->d_name;
1135
1136 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137 {
1138 int len = strlen (name) + 1;
1139
1140 res++;
1141
1142 while (memofs + len > memlen)
1143 {
1144 memlen *= 2;
1145 X_LOCK (wrklock);
1146 req->ptr2 = names = realloc (names, memlen);
1147 X_UNLOCK (wrklock);
1148
1149 if (!names)
1150 break;
1151 }
1152
1153 memcpy (names + memofs, name, len);
1154 memofs += len;
1155 }
1156 }
1157
1158 if (errno)
1159 res = -1;
1160
1161 req->result = res;
1162}
1163
1164/*****************************************************************************/
1165
1166X_THREAD_PROC (aio_proc)
1167{
1168 {//D
1169 aio_req req;
1170 struct timespec ts;
1171 worker *self = (worker *)thr_arg;
1172
1173 /* try to distribute timeouts somewhat randomly */
1174 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176 for (;;)
1177 {
1178 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180 X_LOCK (reqlock);
1181
1182 for (;;)
1183 {
1184 self->req = req = reqq_shift (&req_queue);
1185
1186 if (req)
1187 break;
1188
1189 ++idle;
1190
1191 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192 == ETIMEDOUT)
1193 {
1194 if (idle > max_idle)
1195 {
1196 --idle;
1197 X_UNLOCK (reqlock);
1198 X_LOCK (wrklock);
1199 --started;
1200 X_UNLOCK (wrklock);
1201 goto quit;
1202 }
1203
1204 /* we are allowed to idle, so do so without any timeout */
1205 X_COND_WAIT (reqwait, reqlock);
1206 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207 }
1208
1209 --idle;
1210 }
1211
1212 --nready;
1213
1214 X_UNLOCK (reqlock);
1215
1216 errno = 0; /* strictly unnecessary */
1217
1218 if (!(req->flags & FLAG_CANCELLED))
1219 switch (req->type)
1220 {
1221 case REQ_READ: req->result = req->offs >= 0
1222 ? pread (req->int1, req->ptr1, req->size, req->offs)
1223 : read (req->int1, req->ptr1, req->size); break;
1224 case REQ_WRITE: req->result = req->offs >= 0
1225 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226 : write (req->int1, req->ptr1, req->size); break;
1227
1228 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239 case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240 case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243 case REQ_CLOSE: req->result = close (req->int1); break;
1244 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254 case REQ_FSYNC: req->result = fsync (req->int1); break;
1255 case REQ_READDIR: scandir_ (req, self); break;
1256
1257 case REQ_BUSY:
1258#ifdef _WIN32
1259 Sleep (req->nv1 * 1000.);
1260#else
1261 {
1262 struct timeval tv;
1263
1264 tv.tv_sec = req->nv1;
1265 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267 req->result = select (0, 0, 0, 0, &tv);
1268 }
1269#endif
1270 break;
1271
1272 case REQ_UTIME:
1273 case REQ_FUTIME:
1274 {
1275 struct timeval tv[2];
1276 struct timeval *times;
1277
1278 if (req->nv1 != -1. || req->nv2 != -1.)
1279 {
1280 tv[0].tv_sec = req->nv1;
1281 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282 tv[1].tv_sec = req->nv2;
1283 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285 times = tv;
1286 }
1287 else
1288 times = 0;
1289
1290
1291 req->result = req->type == REQ_FUTIME
1292 ? futimes (req->int1, times)
1293 : utimes (req->ptr1, times);
1294 }
1295
1296 case REQ_GROUP:
1297 case REQ_NOP:
1298 break;
1299
1300 case REQ_QUIT:
1301 goto quit;
1302
1303 default:
1304 req->result = -1;
1305 break;
1306 }
1307
1308 req->errorno = errno;
1309
1310 X_LOCK (reslock);
1311
1312 ++npending;
1313
1314 if (!reqq_push (&res_queue, req))
1315 {
1316 /* write a dummy byte to the pipe so fh becomes ready */
1317 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319 /* optionally signal the main thread asynchronously */
1320 if (main_sig)
1321 pthread_kill (main_tid, main_sig);
1322 }
1323
1324 self->req = 0;
1325 worker_clear (self);
1326
1327 X_UNLOCK (reslock);
1328 }
1329
1330quit:
1331 X_LOCK (wrklock);
1332 worker_free (self);
1333 X_UNLOCK (wrklock);
1334
1335 return 0;
1336 }//D
1337}
1338
1339/*****************************************************************************/
1340
1341static void atfork_prepare (void)
1342{
1343 X_LOCK (wrklock);
1344 X_LOCK (reqlock);
1345 X_LOCK (reslock);
1346#if !HAVE_PREADWRITE
1347 X_LOCK (preadwritelock);
1348#endif
1349#if !HAVE_READDIR_R
1350 X_LOCK (readdirlock);
1351#endif
1352}
1353
1354static void atfork_parent (void)
1355{
1356#if !HAVE_READDIR_R
1357 X_UNLOCK (readdirlock);
1358#endif
1359#if !HAVE_PREADWRITE
1360 X_UNLOCK (preadwritelock);
1361#endif
1362 X_UNLOCK (reslock);
1363 X_UNLOCK (reqlock);
1364 X_UNLOCK (wrklock);
1365}
1366
1367static void atfork_child (void)
1368{
1369 aio_req prv;
1370
1371 while (prv = reqq_shift (&req_queue))
1372 req_destroy (prv);
1373
1374 while (prv = reqq_shift (&res_queue))
1375 req_destroy (prv);
1376
1377 while (wrk_first.next != &wrk_first)
1378 {
1379 worker *wrk = wrk_first.next;
1380
1381 if (wrk->req)
1382 req_destroy (wrk->req);
1383
1384 worker_clear (wrk);
1385 worker_free (wrk);
1386 }
1387
1388 started = 0;
1389 idle = 0;
1390 nreqs = 0;
1391 nready = 0;
1392 npending = 0;
1393
1394 create_respipe ();
1395
1396 atfork_parent ();
1397}
1398
1399#define dREQ \
1400 aio_req req; \
1401 int req_pri = next_pri; \
1402 next_pri = DEFAULT_PRI + PRI_BIAS; \
1403 \
1404 if (SvOK (callback) && !SvROK (callback)) \
1405 croak ("callback must be undef or of reference type"); \
1406 \
1407 Newz (0, req, 1, aio_cb); \
1408 if (!req) \
1409 croak ("out of memory during aio_req allocation"); \
1410 \
1411 req->callback = newSVsv (callback); \
1412 req->pri = req_pri
1413
1414#define REQ_SEND \
1415 req_send (req); \
1416 \
1417 if (GIMME_V != G_VOID) \
1418 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1419
1420MODULE = IO::AIO PACKAGE = IO::AIO
1421
1422PROTOTYPES: ENABLE
1423
1424BOOT:
1425{
1426 HV *stash = gv_stashpv ("IO::AIO", 1);
1427
1428 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1429 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1430 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433#ifdef _WIN32
1434 X_MUTEX_CHECK (wrklock);
1435 X_MUTEX_CHECK (reslock);
1436 X_MUTEX_CHECK (reqlock);
1437 X_MUTEX_CHECK (reqwait);
1438 X_MUTEX_CHECK (preadwritelock);
1439 X_MUTEX_CHECK (readdirlock);
1440
1441 X_COND_CHECK (reqwait);
1442#else
1443 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445#endif
1446
1447 create_respipe ();
1448
1449 X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1450}
1451
1452void 1348void
1349reinit ()
1350 PROTOTYPE:
1351
1352void
1453max_poll_reqs (int nreqs) 1353max_poll_reqs (unsigned int nreqs)
1454 PROTOTYPE: $ 1354 PROTOTYPE: $
1455 CODE: 1355 CODE:
1456 max_poll_reqs = nreqs; 1356 eio_set_max_poll_reqs (nreqs);
1457 1357
1458void 1358void
1459max_poll_time (double nseconds) 1359max_poll_time (double nseconds)
1460 PROTOTYPE: $ 1360 PROTOTYPE: $
1461 CODE: 1361 CODE:
1462 max_poll_time = nseconds * AIO_TICKS; 1362 eio_set_max_poll_time (nseconds);
1463 1363
1464void 1364void
1465min_parallel (int nthreads) 1365min_parallel (unsigned int nthreads)
1466 PROTOTYPE: $
1467
1468void
1469max_parallel (int nthreads)
1470 PROTOTYPE: $
1471
1472void
1473max_idle (int nthreads)
1474 PROTOTYPE: $ 1366 PROTOTYPE: $
1475 CODE: 1367 CODE:
1476 set_max_idle (nthreads); 1368 eio_set_min_parallel (nthreads);
1477 1369
1478int 1370void
1479max_outstanding (int maxreqs) 1371max_parallel (unsigned int nthreads)
1480 PROTOTYPE: $ 1372 PROTOTYPE: $
1481 CODE: 1373 CODE:
1482 RETVAL = max_outstanding; 1374 eio_set_max_parallel (nthreads);
1375
1376void
1377max_idle (unsigned int nthreads)
1378 PROTOTYPE: $
1379 CODE:
1380 eio_set_max_idle (nthreads);
1381
1382void
1383idle_timeout (unsigned int seconds)
1384 PROTOTYPE: $
1385 CODE:
1386 eio_set_idle_timeout (seconds);
1387
1388void
1389max_outstanding (unsigned int maxreqs)
1390 PROTOTYPE: $
1391 CODE:
1483 max_outstanding = maxreqs; 1392 max_outstanding = maxreqs;
1484 OUTPUT:
1485 RETVAL
1486 1393
1487void 1394void
1488aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1395aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1489 PROTOTYPE: $$$;$
1490 PPCODE: 1396 PPCODE:
1491{ 1397{
1492 dREQ; 1398 dREQ;
1493 1399
1400 req->type = EIO_WD_OPEN;
1401 req_set_path1 (req, pathname);
1402
1403 REQ_SEND;
1404}
1405
1406void
1407aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1408 PPCODE:
1409{
1410 dREQ;
1411
1494 req->type = REQ_OPEN; 1412 req->type = EIO_OPEN;
1495 req->sv1 = newSVsv (pathname); 1413 req_set_path1 (req, pathname);
1496 req->ptr1 = SvPVbyte_nolen (req->sv1);
1497 req->int1 = flags; 1414 req->int1 = flags;
1498 req->mode = mode; 1415 req->int2 = mode;
1499 1416
1500 REQ_SEND; 1417 REQ_SEND;
1501} 1418}
1502 1419
1503void 1420void
1504aio_close (SV *fh, SV *callback=&PL_sv_undef) 1421aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1505 PROTOTYPE: $;$
1506 ALIAS: 1422 ALIAS:
1507 aio_close = REQ_CLOSE
1508 aio_fsync = REQ_FSYNC 1423 aio_fsync = EIO_FSYNC
1509 aio_fdatasync = REQ_FDATASYNC 1424 aio_fdatasync = EIO_FDATASYNC
1425 aio_syncfs = EIO_SYNCFS
1510 PPCODE: 1426 PPCODE:
1511{ 1427{
1428 int fd = s_fileno_croak (fh, 0);
1512 dREQ; 1429 dREQ;
1513 1430
1514 req->type = ix; 1431 req->type = ix;
1515 req->sv1 = newSVsv (fh); 1432 req->sv1 = newSVsv (fh);
1516 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1433 req->int1 = fd;
1517 1434
1518 REQ_SEND (req); 1435 REQ_SEND;
1519} 1436}
1520 1437
1521void 1438void
1439aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1440 PPCODE:
1441{
1442 int fd = s_fileno_croak (fh, 0);
1443 dREQ;
1444
1445 req->type = EIO_SYNC_FILE_RANGE;
1446 req->sv1 = newSVsv (fh);
1447 req->int1 = fd;
1448 req->offs = offset;
1449 req->size = nbytes;
1450 req->int2 = flags;
1451
1452 REQ_SEND;
1453}
1454
1455void
1456aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1457 PPCODE:
1458{
1459 int fd = s_fileno_croak (fh, 0);
1460 dREQ;
1461
1462 req->type = EIO_FALLOCATE;
1463 req->sv1 = newSVsv (fh);
1464 req->int1 = fd;
1465 req->int2 = mode;
1466 req->offs = offset;
1467 req->size = len;
1468
1469 REQ_SEND;
1470}
1471
1472void
1473aio_close (SV *fh, SV *callback = &PL_sv_undef)
1474 PPCODE:
1475{
1476 int fd = s_fileno_croak (fh, 0);
1477 dREQ;
1478
1479 req->type = EIO_DUP2;
1480 req->int1 = close_fd;
1481 req->sv2 = newSVsv (fh);
1482 req->int2 = fd;
1483
1484 REQ_SEND;
1485}
1486
1487void
1488aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1489 PPCODE:
1490{
1491 int fd = s_fileno_croak (fh, 0);
1492 dREQ;
1493
1494 req->type = EIO_SEEK;
1495 req->sv1 = newSVsv (fh);
1496 req->int1 = fd;
1497 req->offs = SvVAL64 (offset);
1498 req->int2 = whence;
1499
1500 REQ_SEND;
1501}
1502
1503void
1522aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1504aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1523 ALIAS: 1505 ALIAS:
1524 aio_read = REQ_READ 1506 aio_read = EIO_READ
1525 aio_write = REQ_WRITE 1507 aio_write = EIO_WRITE
1526 PROTOTYPE: $$$$$;$
1527 PPCODE: 1508 PPCODE:
1528{ 1509{
1529 STRLEN svlen; 1510 STRLEN svlen;
1511 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530 char *svptr = SvPVbyte (data, svlen); 1512 char *svptr = SvPVbyte (data, svlen);
1531 UV len = SvUV (length); 1513 UV len = SvUV (length);
1532 1514
1533 SvUPGRADE (data, SVt_PV);
1534 SvPOK_on (data);
1535
1536 if (dataoffset < 0) 1515 if (dataoffset < 0)
1537 dataoffset += svlen; 1516 dataoffset += svlen;
1538 1517
1539 if (dataoffset < 0 || dataoffset > svlen) 1518 if (dataoffset < 0 || dataoffset > svlen)
1540 croak ("dataoffset outside of data scalar"); 1519 croak ("dataoffset outside of data scalar");
1541 1520
1542 if (ix == REQ_WRITE) 1521 if (ix == EIO_WRITE)
1543 { 1522 {
1544 /* write: check length and adjust. */ 1523 /* write: check length and adjust. */
1545 if (!SvOK (length) || len + dataoffset > svlen) 1524 if (!SvOK (length) || len + dataoffset > svlen)
1546 len = svlen - dataoffset; 1525 len = svlen - dataoffset;
1547 } 1526 }
1548 else 1527 else
1549 { 1528 {
1550 /* read: grow scalar as necessary */ 1529 /* read: check type and grow scalar as necessary */
1530 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1551 svptr = SvGROW (data, len + dataoffset + 1); 1531 svptr = sv_grow (data, len + dataoffset + 1);
1532 else if (SvCUR (data) < len + dataoffset)
1533 croak ("length + dataoffset outside of scalar, and cannot grow");
1552 } 1534 }
1553
1554 if (len < 0)
1555 croak ("length must not be negative");
1556 1535
1557 { 1536 {
1558 dREQ; 1537 dREQ;
1559 1538
1560 req->type = ix; 1539 req->type = ix;
1561 req->sv1 = newSVsv (fh); 1540 req->sv1 = newSVsv (fh);
1562 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1541 req->int1 = fd;
1563 : IoOFP (sv_2io (fh)));
1564 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1542 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565 req->size = len; 1543 req->size = len;
1566 req->sv2 = SvREFCNT_inc (data); 1544 req->sv2 = SvREFCNT_inc (data);
1567 req->ptr1 = (char *)svptr + dataoffset; 1545 req->ptr2 = (char *)svptr + dataoffset;
1568 req->stroffset = dataoffset; 1546 req->stroffset = dataoffset;
1569 1547
1570 if (!SvREADONLY (data)) 1548 if (!SvREADONLY (data))
1571 { 1549 {
1572 SvREADONLY_on (data); 1550 SvREADONLY_on (data);
… …
1576 REQ_SEND; 1554 REQ_SEND;
1577 } 1555 }
1578} 1556}
1579 1557
1580void 1558void
1581aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1559aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1582 PROTOTYPE: $$;$ 1560 ALIAS:
1561 aio_ioctl = EIO_IOCTL
1562 aio_fcntl = EIO_FCNTL
1583 PPCODE: 1563 PPCODE:
1584{ 1564{
1585 SV *data; 1565 int fd = s_fileno_croak (fh, 0);
1586 dREQ; 1566 char *svptr;
1587 1567
1588 data = newSV (NAME_MAX); 1568 if (SvPOK (arg) || !SvNIOK (arg))
1589 SvPOK_on (data);
1590
1591 req->type = REQ_READLINK;
1592 req->sv1 = newSVsv (path);
1593 req->ptr2 = SvPVbyte_nolen (req->sv1);
1594 req->sv2 = data;
1595 req->ptr1 = SvPVbyte_nolen (data);
1596
1597 REQ_SEND;
1598}
1599
1600void
1601aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1602 PROTOTYPE: $$$$;$
1603 PPCODE:
1604{
1605 dREQ;
1606
1607 req->type = REQ_SENDFILE;
1608 req->sv1 = newSVsv (out_fh);
1609 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1610 req->sv2 = newSVsv (in_fh);
1611 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1612 req->offs = SvVAL64 (in_offset);
1613 req->size = length;
1614
1615 REQ_SEND;
1616}
1617
1618void
1619aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1620 PROTOTYPE: $$$;$
1621 PPCODE:
1622{
1623 dREQ;
1624
1625 req->type = REQ_READAHEAD;
1626 req->sv1 = newSVsv (fh);
1627 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1628 req->offs = SvVAL64 (offset);
1629 req->size = length;
1630
1631 REQ_SEND;
1632}
1633
1634void
1635aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636 ALIAS:
1637 aio_stat = REQ_STAT
1638 aio_lstat = REQ_LSTAT
1639 PPCODE:
1640{
1641 dREQ;
1642
1643 req->ptr2 = malloc (sizeof (Stat_t));
1644 if (!req->ptr2)
1645 { 1569 {
1646 req_destroy (req); 1570 STRLEN svlen;
1647 croak ("out of memory during aio_stat statdata allocation"); 1571 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1648 } 1572#ifdef IOCPARM_LEN
1573 STRLEN need = IOCPARM_LEN (request);
1574#else
1575 STRLEN need = 256;
1576#endif
1649 1577
1650 req->flags |= FLAG_PTR2_FREE; 1578 if (svlen < need)
1651 req->sv1 = newSVsv (fh_or_path); 1579 svptr = SvGROW (arg, need);
1652
1653 if (SvPOK (fh_or_path))
1654 {
1655 req->type = ix;
1656 req->ptr1 = SvPVbyte_nolen (req->sv1);
1657 } 1580 }
1658 else 1581 else
1582 svptr = (char *)SvIV (arg);
1583
1659 { 1584 {
1585 dREQ;
1586
1660 req->type = REQ_FSTAT; 1587 req->type = ix;
1661 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1588 req->sv1 = newSVsv (fh);
1589 req->int1 = fd;
1590 req->int2 = (long)request;
1591 req->sv2 = SvREFCNT_inc (arg);
1592 req->ptr2 = svptr;
1593
1594 REQ_SEND;
1662 } 1595 }
1596}
1597
1598void
1599aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1600 ALIAS:
1601 aio_readlink = EIO_READLINK
1602 aio_realpath = EIO_REALPATH
1603 PPCODE:
1604{
1605 dREQ;
1606
1607 req->type = ix;
1608 req_set_path1 (req, pathname);
1663 1609
1664 REQ_SEND; 1610 REQ_SEND;
1665} 1611}
1666 1612
1667void 1613void
1614aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1615 PPCODE:
1616{
1617 int ifd = s_fileno_croak (in_fh , 0);
1618 int ofd = s_fileno_croak (out_fh, 1);
1619 dREQ;
1620
1621 req->type = EIO_SENDFILE;
1622 req->sv1 = newSVsv (out_fh);
1623 req->int1 = ofd;
1624 req->sv2 = newSVsv (in_fh);
1625 req->int2 = ifd;
1626 req->offs = in_offset;
1627 req->size = length;
1628
1629 REQ_SEND;
1630}
1631
1632void
1633aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1634 PPCODE:
1635{
1636 int fd = s_fileno_croak (fh, 0);
1637 dREQ;
1638
1639 req->type = EIO_READAHEAD;
1640 req->sv1 = newSVsv (fh);
1641 req->int1 = fd;
1642 req->offs = offset;
1643 req->size = length;
1644
1645 REQ_SEND;
1646}
1647
1648void
1649aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1650 ALIAS:
1651 aio_stat = EIO_STAT
1652 aio_lstat = EIO_LSTAT
1653 aio_statvfs = EIO_STATVFS
1654 PPCODE:
1655{
1656 dREQ;
1657
1658 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1659
1660 REQ_SEND;
1661}
1662
1663void
1664st_xtime ()
1665 ALIAS:
1666 st_atime = 0x01
1667 st_mtime = 0x02
1668 st_ctime = 0x04
1669 st_btime = 0x08
1670 st_xtime = 0x0f
1671 PPCODE:
1672 EXTEND (SP, 4);
1673 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1674 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1675 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1676 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1677
1678void
1679st_xtimensec ()
1680 ALIAS:
1681 st_atimensec = 0x01
1682 st_mtimensec = 0x02
1683 st_ctimensec = 0x04
1684 st_btimensec = 0x08
1685 st_xtimensec = 0x0f
1686 st_btimesec = 0x10
1687 st_gen = 0x20
1688 PPCODE:
1689 EXTEND (SP, 4);
1690 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1691 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1692 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1693 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1694 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1695 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1696
1697UV
1698major (UV dev)
1699 ALIAS:
1700 minor = 1
1701 CODE:
1702 RETVAL = ix ? minor (dev) : major (dev);
1703 OUTPUT:
1704 RETVAL
1705
1706UV
1707makedev (UV maj, UV min)
1708 CODE:
1709 RETVAL = makedev (maj, min);
1710 OUTPUT:
1711 RETVAL
1712
1713void
1668aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1714aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1669 PPCODE: 1715 PPCODE:
1670{ 1716{
1671 dREQ; 1717 dREQ;
1672 1718
1673 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1719 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1720 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675 req->sv1 = newSVsv (fh_or_path); 1721 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1676
1677 if (SvPOK (fh_or_path))
1678 {
1679 req->type = REQ_UTIME;
1680 req->ptr1 = SvPVbyte_nolen (req->sv1);
1681 }
1682 else
1683 {
1684 req->type = REQ_FUTIME;
1685 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686 }
1687 1722
1688 REQ_SEND; 1723 REQ_SEND;
1689} 1724}
1690 1725
1691void 1726void
1692aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef) 1727aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1693 PPCODE: 1728 PPCODE:
1694{ 1729{
1695 dREQ; 1730 dREQ;
1696 1731
1697 req->sv1 = newSVsv (fh_or_path);
1698 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1732 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699 1733 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1700 if (SvPOK (fh_or_path))
1701 {
1702 req->type = REQ_TRUNCATE;
1703 req->ptr1 = SvPVbyte_nolen (req->sv1);
1704 }
1705 else
1706 {
1707 req->type = REQ_FTRUNCATE;
1708 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709 }
1710 1734
1711 REQ_SEND; 1735 REQ_SEND;
1712} 1736}
1713 1737
1714void 1738void
1715aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1739aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1716 PPCODE: 1740 PPCODE:
1717{ 1741{
1718 dREQ; 1742 dREQ;
1719 1743
1720 req->mode = mode; 1744 req->int2 = mode;
1721 req->sv1 = newSVsv (fh_or_path); 1745 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1722
1723 if (SvPOK (fh_or_path))
1724 {
1725 req->type = REQ_CHMOD;
1726 req->ptr1 = SvPVbyte_nolen (req->sv1);
1727 }
1728 else
1729 {
1730 req->type = REQ_FCHMOD;
1731 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732 }
1733 1746
1734 REQ_SEND; 1747 REQ_SEND;
1735} 1748}
1736 1749
1737void 1750void
1738aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) 1751aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1739 PPCODE: 1752 PPCODE:
1740{ 1753{
1741 dREQ; 1754 dREQ;
1742 1755
1743 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1756 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1757 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745 req->sv1 = newSVsv (fh_or_path); 1758 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1746
1747 if (SvPOK (fh_or_path))
1748 {
1749 req->type = REQ_CHOWN;
1750 req->ptr1 = SvPVbyte_nolen (req->sv1);
1751 }
1752 else
1753 {
1754 req->type = REQ_FCHOWN;
1755 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756 }
1757 1759
1758 REQ_SEND; 1760 REQ_SEND;
1759} 1761}
1760 1762
1761void 1763void
1764aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1765 PPCODE:
1766{
1767 dREQ;
1768
1769 req->type = EIO_READDIR;
1770 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1771
1772 if (flags & EIO_READDIR_DENTS)
1773 req->int1 |= EIO_READDIR_CUSTOM2;
1774
1775 req_set_path1 (req, pathname);
1776
1777 REQ_SEND;
1778}
1779
1780void
1781aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1782 PPCODE:
1783{
1784 dREQ;
1785
1786 req->type = EIO_MKDIR;
1787 req->int2 = mode;
1788 req_set_path1 (req, pathname);
1789
1790 REQ_SEND;
1791}
1792
1793void
1762aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1794aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1763 ALIAS: 1795 ALIAS:
1764 aio_unlink = REQ_UNLINK 1796 aio_unlink = EIO_UNLINK
1765 aio_rmdir = REQ_RMDIR 1797 aio_rmdir = EIO_RMDIR
1766 aio_readdir = REQ_READDIR 1798 aio_readdir = EIO_READDIR
1767 PPCODE: 1799 PPCODE:
1768{ 1800{
1769 dREQ; 1801 dREQ;
1770 1802
1771 req->type = ix; 1803 req->type = ix;
1772 req->sv1 = newSVsv (pathname); 1804 req_set_path1 (req, pathname);
1773 req->ptr1 = SvPVbyte_nolen (req->sv1);
1774 1805
1775 REQ_SEND; 1806 REQ_SEND;
1776} 1807}
1777 1808
1778void 1809void
1779aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) 1810aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1811 ALIAS:
1812 aio_link = EIO_LINK
1813 aio_symlink = EIO_SYMLINK
1814 aio_rename = EIO_RENAME
1780 PPCODE: 1815 PPCODE:
1781{ 1816{
1782 dREQ; 1817 eio_wd wd2 = 0;
1783
1784 req->type = REQ_MKDIR;
1785 req->sv1 = newSVsv (pathname);
1786 req->ptr1 = SvPVbyte_nolen (req->sv1);
1787 req->mode = mode;
1788
1789 REQ_SEND;
1790}
1791
1792void
1793aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794 ALIAS:
1795 aio_link = REQ_LINK
1796 aio_symlink = REQ_SYMLINK
1797 aio_rename = REQ_RENAME
1798 PPCODE:
1799{
1800 dREQ; 1818 dREQ;
1801 1819
1802 req->type = ix; 1820 req->type = ix;
1803 req->sv2 = newSVsv (oldpath); 1821 req_set_path1 (req, oldpath);
1804 req->ptr2 = SvPVbyte_nolen (req->sv2); 1822 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1805 req->sv1 = newSVsv (newpath); 1823 req->int3 = (long)wd2;
1806 req->ptr1 = SvPVbyte_nolen (req->sv1);
1807 1824
1808 REQ_SEND; 1825 REQ_SEND;
1809} 1826}
1810 1827
1811void 1828void
1812aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1829aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1813 PPCODE: 1830 PPCODE:
1814{ 1831{
1832 eio_wd wd2 = 0;
1815 dREQ; 1833 dREQ;
1816 1834
1817 req->type = REQ_MKNOD; 1835 req->type = EIO_RENAME;
1818 req->sv1 = newSVsv (pathname); 1836 req_set_path1 (req, oldpath);
1819 req->ptr1 = SvPVbyte_nolen (req->sv1); 1837 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1820 req->mode = (mode_t)mode; 1838 req->int2 = flags;
1821 req->offs = dev; 1839 req->int3 = (long)wd2;
1822 1840
1823 REQ_SEND; 1841 REQ_SEND;
1824} 1842}
1825 1843
1826void 1844void
1827aio_busy (double delay, SV *callback=&PL_sv_undef) 1845aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1828 PPCODE: 1846 PPCODE:
1829{ 1847{
1830 dREQ; 1848 dREQ;
1849
1850 req->type = EIO_MKNOD;
1851 req->int2 = (mode_t)mode;
1852 req->offs = dev;
1853 req_set_path1 (req, pathname);
1854
1855 REQ_SEND;
1856}
1831 1857
1858void
1859aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1860 ALIAS:
1861 aio_mtouch = EIO_MTOUCH
1862 aio_msync = EIO_MSYNC
1863 PPCODE:
1864{
1865 STRLEN svlen;
1866 char *svptr = SvPVbyte (data, svlen);
1867 UV len = SvUV (length);
1868
1869 if (flags < 0)
1870 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1871
1872 if (offset < 0)
1873 offset += svlen;
1874
1875 if (offset < 0 || offset > svlen)
1876 croak ("offset outside of scalar");
1877
1878 if (!SvOK (length) || len + offset > svlen)
1879 len = svlen - offset;
1880
1881 {
1882 dREQ;
1883
1884 req->type = ix;
1885 req->sv2 = SvREFCNT_inc (data);
1886 req->ptr2 = (char *)svptr + offset;
1887 req->size = len;
1888 req->int1 = flags;
1889
1890 REQ_SEND;
1891 }
1892}
1893
1894void
1895aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1896 PPCODE:
1897{
1898 STRLEN svlen;
1899 char *svptr = SvPVbyte (data, svlen);
1900 UV len = SvUV (length);
1901
1902 if (offset < 0)
1903 offset += svlen;
1904
1905 if (offset < 0 || offset > svlen)
1906 croak ("offset outside of scalar");
1907
1908 if (!SvOK (length) || len + offset > svlen)
1909 len = svlen - offset;
1910
1911 {
1912 dREQ;
1913
1914 req->type = EIO_MLOCK;
1915 req->sv2 = SvREFCNT_inc (data);
1916 req->ptr2 = (char *)svptr + offset;
1917 req->size = len;
1918
1919 REQ_SEND;
1920 }
1921}
1922
1923void
1924aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1925 PPCODE:
1926{
1927 dREQ;
1928
1929 req->type = EIO_MLOCKALL;
1930 req->int1 = flags;
1931
1932 REQ_SEND;
1933}
1934
1935void
1936aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1937 PPCODE:
1938{
1939 int fd = s_fileno_croak (fh, 0);
1940 dREQ;
1941
1942 req->type = EIO_CUSTOM;
1943 req->sv1 = newSVsv (fh);
1944 req->int1 = fd;
1945
1946 req->feed = fiemap;
1947#if HAVE_FIEMAP
1948 /* keep our fingers crossed that the next two types are 64 bit */
1949 req->offs = start;
1950 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1951 req->int2 = flags;
1952 req->int3 = SvOK (count) ? SvIV (count) : -1;
1953#endif
1954
1955 REQ_SEND;
1956}
1957
1958void
1959aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1960 PPCODE:
1961{
1962 char *svptr = 0;
1963
1964 sv_clear_foreign (data);
1965
1966 if (length) /* known length, directly read into scalar */
1967 {
1968 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1969 svptr = sv_grow (data, length + 1);
1970 else if (SvCUR (data) < length)
1971 croak ("length outside of scalar, and cannot grow");
1972 else
1973 svptr = SvPVbyte_nolen (data);
1974 }
1975
1976 {
1977 dREQ;
1978
1979 req->type = EIO_SLURP;
1980 req_set_path1 (req, pathname);
1981 req->offs = offset;
1982 req->size = length;
1983 req->sv2 = SvREFCNT_inc (data);
1984 req->ptr2 = svptr;
1985
1986 if (!SvREADONLY (data))
1987 {
1988 SvREADONLY_on (data);
1989 req->flags |= FLAG_SV2_RO_OFF;
1990 }
1991
1992 REQ_SEND;
1993 }
1994}
1995
1996void
1997aio_busy (double delay, SV *callback = &PL_sv_undef)
1998 PPCODE:
1999{
2000 dREQ;
2001
1832 req->type = REQ_BUSY; 2002 req->type = EIO_BUSY;
1833 req->nv1 = delay < 0. ? 0. : delay; 2003 req->nv1 = delay < 0. ? 0. : delay;
1834 2004
1835 REQ_SEND; 2005 REQ_SEND;
1836} 2006}
1837 2007
1838void 2008void
1839aio_group (SV *callback=&PL_sv_undef) 2009aio_group (SV *callback = &PL_sv_undef)
1840 PROTOTYPE: ;$
1841 PPCODE: 2010 PPCODE:
1842{ 2011{
1843 dREQ; 2012 dREQ;
1844 2013
1845 req->type = REQ_GROUP; 2014 req->type = EIO_GROUP;
1846 2015
2016 PUTBACK;
1847 req_send (req); 2017 req_submit (req);
2018 SPAGAIN;
2019
1848 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2020 XPUSHs (req_sv (req, aio_grp_stash));
1849} 2021}
1850 2022
1851void 2023void
1852aio_nop (SV *callback=&PL_sv_undef) 2024aio_nop (SV *callback = &PL_sv_undef)
2025 ALIAS:
2026 aio_nop = EIO_NOP
2027 aio_sync = EIO_SYNC
1853 PPCODE: 2028 PPCODE:
1854{ 2029{
1855 dREQ; 2030 dREQ;
1856 2031
1857 req->type = REQ_NOP; 2032 req->type = ix;
1858 2033
1859 REQ_SEND; 2034 REQ_SEND;
1860} 2035}
1861 2036
1862int 2037int
1863aioreq_pri (int pri = 0) 2038aioreq_pri (int pri = NO_INIT)
1864 PROTOTYPE: ;$
1865 CODE: 2039 CODE:
1866 RETVAL = next_pri - PRI_BIAS; 2040 RETVAL = next_pri;
1867 if (items > 0) 2041 if (items > 0)
1868 { 2042 {
1869 if (pri < PRI_MIN) pri = PRI_MIN; 2043 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870 if (pri > PRI_MAX) pri = PRI_MAX; 2044 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871 next_pri = pri + PRI_BIAS; 2045 next_pri = pri;
1872 } 2046 }
1873 OUTPUT: 2047 OUTPUT:
1874 RETVAL 2048 RETVAL
1875 2049
1876void 2050void
1877aioreq_nice (int nice = 0) 2051aioreq_nice (int nice = 0)
1878 CODE: 2052 CODE:
1879 nice = next_pri - nice; 2053 nice = next_pri - nice;
1880 if (nice < PRI_MIN) nice = PRI_MIN; 2054 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881 if (nice > PRI_MAX) nice = PRI_MAX; 2055 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882 next_pri = nice + PRI_BIAS; 2056 next_pri = nice;
1883 2057
1884void 2058void
1885flush () 2059flush ()
1886 PROTOTYPE:
1887 CODE: 2060 CODE:
1888 while (nreqs) 2061 while (eio_nreqs ())
1889 { 2062 {
1890 poll_wait (); 2063 poll_wait ();
1891 poll_cb (); 2064 poll_cb ();
1892 } 2065 }
1893 2066
1894int 2067int
1895poll() 2068poll ()
1896 PROTOTYPE:
1897 CODE: 2069 CODE:
1898 poll_wait (); 2070 poll_wait ();
1899 RETVAL = poll_cb (); 2071 RETVAL = poll_cb ();
1900 OUTPUT: 2072 OUTPUT:
1901 RETVAL 2073 RETVAL
1902 2074
1903int 2075int
1904poll_fileno() 2076poll_fileno ()
1905 PROTOTYPE:
1906 CODE: 2077 CODE:
1907 RETVAL = respipe [0]; 2078 RETVAL = s_epipe_fd (&respipe);
1908 OUTPUT: 2079 OUTPUT:
1909 RETVAL 2080 RETVAL
1910 2081
1911int 2082int
1912poll_cb(...) 2083poll_cb (...)
1913 PROTOTYPE: 2084 PROTOTYPE:
1914 CODE: 2085 CODE:
1915 RETVAL = poll_cb (); 2086 RETVAL = poll_cb ();
1916 OUTPUT: 2087 OUTPUT:
1917 RETVAL 2088 RETVAL
1918 2089
1919void 2090void
1920poll_wait() 2091poll_wait ()
1921 PROTOTYPE:
1922 CODE: 2092 CODE:
1923 poll_wait (); 2093 poll_wait ();
1924 2094
1925void
1926setsig (int signum = SIGIO)
1927 PROTOTYPE: ;$
1928 CODE:
1929{
1930 if (block_sig_level)
1931 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933 X_LOCK (reslock);
1934 main_tid = pthread_self ();
1935 main_sig = signum;
1936 X_UNLOCK (reslock);
1937
1938 if (main_sig && npending)
1939 pthread_kill (main_tid, main_sig);
1940}
1941
1942void
1943aio_block (SV *cb)
1944 PROTOTYPE: &
1945 PPCODE:
1946{
1947 int count;
1948
1949 block_sig ();
1950 PUSHMARK (SP);
1951 PUTBACK;
1952 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953 SPAGAIN;
1954 unblock_sig ();
1955
1956 if (SvTRUE (ERRSV))
1957 croak (0);
1958
1959 XSRETURN (count);
1960}
1961
1962int 2095int
1963nreqs() 2096nreqs ()
1964 PROTOTYPE:
1965 CODE: 2097 CODE:
1966 RETVAL = nreqs; 2098 RETVAL = eio_nreqs ();
1967 OUTPUT: 2099 OUTPUT:
1968 RETVAL 2100 RETVAL
1969 2101
1970int 2102int
1971nready() 2103nready ()
1972 PROTOTYPE:
1973 CODE: 2104 CODE:
1974 RETVAL = get_nready (); 2105 RETVAL = eio_nready ();
1975 OUTPUT: 2106 OUTPUT:
1976 RETVAL 2107 RETVAL
1977 2108
1978int 2109int
1979npending() 2110npending ()
1980 PROTOTYPE:
1981 CODE: 2111 CODE:
1982 RETVAL = get_npending (); 2112 RETVAL = eio_npending ();
1983 OUTPUT: 2113 OUTPUT:
1984 RETVAL 2114 RETVAL
1985 2115
1986int 2116int
1987nthreads() 2117nthreads ()
1988 PROTOTYPE:
1989 CODE: 2118 CODE:
1990 if (WORDACCESS_UNSAFE) X_LOCK (wrklock); 2119 RETVAL = eio_nthreads ();
1991 RETVAL = started;
1992 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993 OUTPUT: 2120 OUTPUT:
1994 RETVAL 2121 RETVAL
1995 2122
2123int
2124fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2125 CODE:
2126 RETVAL = posix_fadvise (fh, offset, length, advice);
2127 OUTPUT:
2128 RETVAL
2129
2130IV
2131sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2132 CODE:
2133 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2134 OUTPUT:
2135 RETVAL
2136
2137void
2138mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2139 PPCODE:
2140 sv_clear_foreign (scalar);
2141{
2142 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2143 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2144 if (addr == (void *)-1)
2145 XSRETURN_NO;
2146
2147 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2148
2149 if (!(prot & PROT_WRITE))
2150 SvREADONLY_on (scalar);
2151
2152 XSRETURN_YES;
2153}
2154
2155void
2156munmap (SV *scalar)
2157 CODE:
2158 sv_clear_foreign (scalar);
2159
2160SV *
2161mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2162 CODE:
2163{
2164 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2165 void *new;
2166
2167 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2168 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2169
2170 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2171
2172 RETVAL = &PL_sv_no;
2173
2174 if (new != (void *)-1)
2175 {
2176 RETVAL = new == (void *)mg->mg_ptr
2177 ? newSVpvn ("0 but true", 10)
2178 : &PL_sv_yes;
2179
2180 mg->mg_ptr = (char *)new;
2181 mg->mg_obj = (SV *)new_length;
2182
2183 SvPVX (scalar) = mg->mg_ptr;
2184 SvCUR_set (scalar, new_length);
2185 }
2186}
2187 OUTPUT:
2188 RETVAL
2189
2190int
2191madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2192 ALIAS:
2193 mprotect = 1
2194 CODE:
2195{
2196 STRLEN svlen;
2197 void *addr = SvPVbyte (scalar, svlen);
2198 STRLEN len = SvUV (length);
2199
2200 if (offset < 0)
2201 offset += svlen;
2202
2203 if (offset < 0 || offset > svlen)
2204 croak ("offset outside of scalar");
2205
2206 if (!SvOK (length) || len + offset > svlen)
2207 len = svlen - offset;
2208
2209 addr = (void *)(((intptr_t)addr) + offset);
2210 eio_page_align (&addr, &len);
2211
2212 switch (ix)
2213 {
2214 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2215 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2216 }
2217}
2218 OUTPUT:
2219 RETVAL
2220
2221int
2222munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2223 CODE:
2224{
2225 STRLEN svlen;
2226 void *addr = SvPVbyte (scalar, svlen);
2227 size_t len = SvUV (length);
2228
2229 if (offset < 0)
2230 offset += svlen;
2231
2232 if (offset < 0 || offset > svlen)
2233 croak ("offset outside of scalar");
2234
2235 if (!SvOK (length) || len + offset > svlen)
2236 len = svlen - offset;
2237
2238 addr = (void *)(((intptr_t)addr) + offset);
2239 eio_page_align (&addr, &len);
2240#if _POSIX_MEMLOCK_RANGE
2241 RETVAL = munlock (addr, len);
2242#else
2243 RETVAL = EIO_ENOSYS ();
2244#endif
2245}
2246 OUTPUT:
2247 RETVAL
2248
2249int
2250mlockall (int flags)
2251 CODE:
2252 RETVAL = eio_mlockall_sync (flags);
2253 OUTPUT:
2254 RETVAL
2255
2256int
2257munlockall ()
2258 CODE:
2259#if _POSIX_MEMLOCK
2260 munlockall ();
2261#else
2262 RETVAL = EIO_ENOSYS ();
2263#endif
2264 OUTPUT:
2265 RETVAL
2266
2267int
2268splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2269 CODE:
2270{
2271#if HAVE_LINUX_SPLICE
2272 loff_t off_in_, off_out_;
2273 RETVAL = splice (
2274 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2275 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2276 length, flags
2277 );
2278#else
2279 RETVAL = EIO_ENOSYS ();
2280#endif
2281}
2282 OUTPUT:
2283 RETVAL
2284
2285int
2286tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2287 CODE:
2288#if HAVE_LINUX_SPLICE
2289 RETVAL = tee (rfh, wfh, length, flags);
2290#else
2291 RETVAL = EIO_ENOSYS ();
2292#endif
2293 OUTPUT:
2294 RETVAL
2295
2296int
2297pipesize (aio_rfd rfh, int new_size = -1)
2298 PROTOTYPE: $;$
2299 CODE:
2300#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2301 if (new_size >= 0)
2302 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2303 else
2304 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2305#else
2306 errno = ENOSYS;
2307 RETVAL = -1;
2308#endif
2309 OUTPUT:
2310 RETVAL
2311
2312void
2313pipe2 (int flags = 0)
2314 PROTOTYPE: ;$
2315 PPCODE:
2316{
2317 int fd[2];
2318 int res;
2319
2320 if (flags)
2321#if HAVE_PIPE2
2322 res = pipe2 (fd, flags);
2323#else
2324 res = (errno = ENOSYS, -1);
2325#endif
2326 else
2327 res = pipe (fd);
2328
2329 if (!res)
2330 {
2331 EXTEND (SP, 2);
2332 PUSHs (newmortalFH (fd[0], O_RDONLY));
2333 PUSHs (newmortalFH (fd[1], O_WRONLY));
2334 }
2335}
2336
2337void
2338eventfd (unsigned int initval = 0, int flags = 0)
2339 PPCODE:
2340{
2341 int fd;
2342#if HAVE_EVENTFD
2343 fd = eventfd (initval, flags);
2344#else
2345 fd = (errno = ENOSYS, -1);
2346#endif
2347
2348 XPUSHs (newmortalFH (fd, O_RDWR));
2349}
2350
2351void
2352timerfd_create (int clockid, int flags = 0)
2353 PPCODE:
2354{
2355 int fd;
2356#if HAVE_TIMERFD
2357 fd = timerfd_create (clockid, flags);
2358#else
2359 fd = (errno = ENOSYS, -1);
2360#endif
2361
2362 XPUSHs (newmortalFH (fd, O_RDWR));
2363}
2364
2365void
2366timerfd_settime (SV *fh, int flags, NV interval, NV value)
2367 PPCODE:
2368{
2369 int fd = s_fileno_croak (fh, 0);
2370#if HAVE_TIMERFD
2371 int res;
2372 struct itimerspec its, ots;
2373
2374 ts_set (&its.it_interval, interval);
2375 ts_set (&its.it_value , value);
2376 res = timerfd_settime (fd, flags, &its, &ots);
2377
2378 if (!res)
2379 {
2380 EXTEND (SP, 2);
2381 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2382 PUSHs (newSVnv (ts_get (&ots.it_value)));
2383 }
2384#else
2385 errno = ENOSYS;
2386#endif
2387}
2388
2389void
2390timerfd_gettime (SV *fh)
2391 PPCODE:
2392{
2393 int fd = s_fileno_croak (fh, 0);
2394#if HAVE_TIMERFD
2395 int res;
2396 struct itimerspec ots;
2397 res = timerfd_gettime (fd, &ots);
2398
2399 if (!res)
2400 {
2401 EXTEND (SP, 2);
2402 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2403 PUSHs (newSVnv (ts_get (&ots.it_value)));
2404 }
2405#else
2406 errno = ENOSYS;
2407#endif
2408}
2409
2410UV
2411get_fdlimit ()
2412 CODE:
2413#if HAVE_RLIMITS
2414 struct rlimit rl;
2415 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2416 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2417#endif
2418 XSRETURN_UNDEF;
2419 OUTPUT:
2420 RETVAL
2421
2422void
2423min_fdlimit (UV limit = 0x7fffffffU)
2424 CODE:
2425{
2426#if HAVE_RLIMITS
2427 struct rlimit rl;
2428 rlim_t orig_rlim_max;
2429 UV bit;
2430
2431 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2432 goto fail;
2433
2434 if (rl.rlim_cur == RLIM_INFINITY)
2435 XSRETURN_YES;
2436
2437 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2438
2439 if (rl.rlim_cur < limit)
2440 {
2441 rl.rlim_cur = limit;
2442
2443 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2444 rl.rlim_max = rl.rlim_cur;
2445 }
2446
2447 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2448 XSRETURN_YES;
2449
2450 if (errno == EPERM)
2451 {
2452 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2453 /* our limit overflows a system-wide limit */
2454 /* try an adaptive algorithm, but do not lower the hardlimit */
2455 rl.rlim_max = 0;
2456 for (bit = 0x40000000U; bit; bit >>= 1)
2457 {
2458 rl.rlim_max |= bit;
2459 rl.rlim_cur = rl.rlim_max;
2460
2461 /* nevr decrease the hard limit */
2462 if (rl.rlim_max < orig_rlim_max)
2463 break;
2464
2465 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2466 rl.rlim_max &= ~bit; /* too high, remove bit again */
2467 }
2468
2469 /* now, raise the soft limit to the max permitted */
2470 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2471 {
2472 rl.rlim_cur = rl.rlim_max;
2473 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2474 errno = EPERM;
2475 }
2476 }
2477#endif
2478 fail:
2479 XSRETURN_UNDEF;
2480}
2481
2482void _on_next_submit (SV *cb)
2483 CODE:
2484 SvREFCNT_dec (on_next_submit);
2485 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2486
1996PROTOTYPES: DISABLE 2487PROTOTYPES: DISABLE
2488
2489MODULE = IO::AIO PACKAGE = IO::AIO::WD
2490
2491BOOT:
2492{
2493 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2494 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2495}
2496
2497void
2498DESTROY (SV *self)
2499 CODE:
2500{
2501 aio_wd wd = SvAIO_WD (self);
2502#if HAVE_AT
2503 {
2504 SV *callback = &PL_sv_undef;
2505 dREQ; /* clobbers next_pri :/ */
2506 next_pri = req->pri; /* restore next_pri */
2507 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2508 req->type = EIO_WD_CLOSE;
2509 req->wd = wd;
2510 REQ_SEND;
2511 }
2512#else
2513 eio_wd_close_sync (wd);
2514#endif
2515}
1997 2516
1998MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2517MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999 2518
2000void 2519void
2001cancel (aio_req_ornot req) 2520cancel (aio_req_ornot req)
2002 CODE: 2521 CODE:
2003 req_cancel (req); 2522 eio_cancel (req);
2004 2523
2005void 2524void
2006cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2525cb (aio_req_ornot req, SV *callback = NO_INIT)
2007 CODE: 2526 PPCODE:
2527{
2528 if (GIMME_V != G_VOID)
2529 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2530
2531 if (items > 1)
2532 {
2533 SV *cb_cv = get_cb (callback);
2534
2008 SvREFCNT_dec (req->callback); 2535 SvREFCNT_dec (req->callback);
2009 req->callback = newSVsv (callback); 2536 req->callback = SvREFCNT_inc (cb_cv);
2537 }
2538}
2010 2539
2011MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2540MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012 2541
2013void 2542void
2014add (aio_req grp, ...) 2543add (aio_req grp, ...)
2015 PPCODE: 2544 PPCODE:
2016{ 2545{
2017 int i; 2546 int i;
2018 aio_req req;
2019
2020 if (main_sig && !block_sig_level)
2021 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022 2547
2023 if (grp->int1 == 2) 2548 if (grp->int1 == 2)
2024 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2549 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025 2550
2026 for (i = 1; i < items; ++i ) 2551 for (i = 1; i < items; ++i )
2027 { 2552 {
2553 aio_req req;
2554
2028 if (GIMME_V != G_VOID) 2555 if (GIMME_V != G_VOID)
2029 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2556 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030 2557
2031 req = SvAIO_REQ (ST (i)); 2558 req = SvAIO_REQ (ST (i));
2032 2559
2033 if (req) 2560 if (req)
2034 { 2561 eio_grp_add (grp, req);
2035 ++grp->size;
2036 req->grp = grp;
2037
2038 req->grp_prev = 0;
2039 req->grp_next = grp->grp_first;
2040
2041 if (grp->grp_first)
2042 grp->grp_first->grp_prev = req;
2043
2044 grp->grp_first = req;
2045 }
2046 } 2562 }
2047} 2563}
2048 2564
2049void 2565void
2050cancel_subs (aio_req_ornot req) 2566cancel_subs (aio_req_ornot req)
… …
2059 AV *av; 2575 AV *av;
2060 2576
2061 grp->errorno = errno; 2577 grp->errorno = errno;
2062 2578
2063 av = newAV (); 2579 av = newAV ();
2580 av_extend (av, items - 1);
2064 2581
2065 for (i = 1; i < items; ++i ) 2582 for (i = 1; i < items; ++i )
2066 av_push (av, newSVsv (ST (i))); 2583 av_push (av, newSVsv (ST (i)));
2067 2584
2068 SvREFCNT_dec (grp->sv1); 2585 SvREFCNT_dec (grp->sv1);
… …
2075 grp->errorno = errorno; 2592 grp->errorno = errorno;
2076 2593
2077void 2594void
2078limit (aio_req grp, int limit) 2595limit (aio_req grp, int limit)
2079 CODE: 2596 CODE:
2080 grp->int2 = limit; 2597 eio_grp_limit (grp, limit);
2081 aio_grp_feed (grp);
2082 2598
2083void 2599void
2084feed (aio_req grp, SV *callback=&PL_sv_undef) 2600feed (aio_req grp, SV *callback = &PL_sv_undef)
2085 CODE: 2601 CODE:
2086{ 2602{
2087 SvREFCNT_dec (grp->sv2); 2603 SvREFCNT_dec (grp->sv2);
2088 grp->sv2 = newSVsv (callback); 2604 grp->sv2 = newSVsv (callback);
2605 grp->feed = aio_grp_feed;
2089 2606
2090 if (grp->int2 <= 0) 2607 if (grp->int2 <= 0)
2091 grp->int2 = 2; 2608 grp->int2 = 2;
2092 2609
2093 aio_grp_feed (grp); 2610 eio_grp_limit (grp, grp->int2);
2094} 2611}
2095 2612

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