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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.109 by root, Sat Oct 6 14:05:19 2007 UTC vs.
Revision 1.268 by root, Thu Nov 29 19:49:48 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
102static HV *stash; 217/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
218#ifdef __sun
219# undef PAGESIZE
220#endif
103 221
104#define dBUF \ 222#if PAGESIZE <= 0
105 char *aio_buf; \ 223# define PAGESIZE sysconf (_SC_PAGESIZE)
106 X_LOCK (wrklock); \ 224#endif
107 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 225
108 X_UNLOCK (wrklock); \ 226/*****************************************************************************/
109 if (!aio_buf) \ 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
110 return -1; 261 return 0;
262}
111 263
112typedef SV SV8; /* byte-sv, used for argument-checking */ 264static MGVTBL mmap_vtbl = {
113 265 0, 0, 0, 0, mmap_free
114enum {
115 REQ_QUIT,
116 REQ_OPEN, REQ_CLOSE,
117 REQ_READ, REQ_WRITE,
118 REQ_READAHEAD, REQ_SENDFILE,
119 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120 REQ_TRUNCATE, REQ_FTRUNCATE,
121 REQ_UTIME, REQ_FUTIME,
122 REQ_CHMOD, REQ_FCHMOD,
123 REQ_CHOWN, REQ_FCHOWN,
124 REQ_FSYNC, REQ_FDATASYNC,
125 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126 REQ_MKNOD, REQ_READDIR,
127 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128 REQ_GROUP, REQ_NOP,
129 REQ_BUSY,
130}; 266};
131 267
132#define AIO_REQ_KLASS "IO::AIO::REQ" 268static int ecb_cold
133#define AIO_GRP_KLASS "IO::AIO::GRP" 269sysfree_free (pTHX_ SV *sv, MAGIC *mg)
134
135typedef struct aio_cb
136{ 270{
137 struct aio_cb *volatile next; 271 free (mg->mg_ptr);
272 mg->mg_obj = 0; /* just in case */
138 273
139 SV *callback; 274 SvREADONLY_off (sv);
140 SV *sv1, *sv2;
141 void *ptr1, *ptr2;
142 off_t offs;
143 size_t size;
144 ssize_t result;
145 double nv1, nv2;
146 275
147 STRLEN stroffset; 276 if (SvPVX (sv) != mg->mg_ptr)
148 int type; 277 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
149 int int1, int2, int3;
150 int errorno;
151 mode_t mode; /* open */
152 278
153 unsigned char flags; 279 SvCUR_set (sv, 0);
154 unsigned char pri; 280 SvPVX (sv) = 0;
281 SvOK_off (sv);
155 282
156 SV *self; /* the perl counterpart of this request, if any */ 283 return 0;
157 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 284}
158} aio_cb;
159 285
160enum { 286static MGVTBL sysfree_vtbl = {
161 FLAG_CANCELLED = 0x01, /* request was cancelled */ 287 0, 0, 0, 0, sysfree_free
162 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164}; 288};
165 289
166typedef aio_cb *aio_req; 290/*****************************************************************************/
167typedef aio_cb *aio_req_ornot;
168 291
169enum { 292/* helper: set scalar to foreign ptr with custom free */
170 PRI_MIN = -4, 293static void
171 PRI_MAX = 4, 294sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
172
173 DEFAULT_PRI = 0,
174 PRI_BIAS = -PRI_MIN,
175 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176};
177
178#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180static unsigned int max_poll_time = 0;
181static unsigned int max_poll_reqs = 0;
182
183/* calculcate time difference in ~1/AIO_TICKS of a second */
184static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185{ 295{
186 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 296 sv_force_normal (sv);
187 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
188}
189 297
190static thread_t main_tid; 298 /* we store the length in mg_obj, as namlen is I32 :/ */
191static int main_sig; 299 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
192static int block_sig_level; 300 ->mg_obj = (SV *)length;
193 301
194void block_sig () 302 SvUPGRADE (sv, SVt_PV); /* nop... */
195{
196 sigset_t ss;
197 303
198 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)
199 return; 350 return;
200 351
201 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)
202 return; 360 return;
203 361
204 sigemptyset (&ss); 362 if (req->int3 >= 0 /* not autosizing */
205 sigaddset (&ss, main_sig); 363 || !fiemap->fm_mapped_extents /* no more extents */
206 pthread_sigmask (SIG_BLOCK, &ss, 0); 364 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207} 365 goto done;
208 366
209void unblock_sig () 367 /* else we have to loop -
210{ 368 * it would be tempting (actually I tried that first) to just query the
211 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 */
212 373
213 if (--block_sig_level) 374 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214 return;
215 375
216 if (!main_sig) 376 for (;;)
217 return;
218
219 sigemptyset (&ss);
220 sigaddset (&ss, main_sig);
221 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222}
223
224static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226static unsigned int started, idle, wanted;
227
228/* worker threads management */
229static mutex_t wrklock = X_MUTEX_INIT;
230
231typedef struct worker {
232 /* locked by wrklock */
233 struct worker *prev, *next;
234
235 thread_t tid;
236
237 /* locked by reslock, reqlock or wrklock */
238 aio_req req; /* currently processed request */
239 void *dbuf;
240 DIR *dirp;
241} worker;
242
243static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245static void worker_clear (worker *wrk)
246{
247 if (wrk->dirp)
248 { 377 {
249 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) */
250 wrk->dirp = 0; 379 char scratch[3072];
251 } 380 struct fiemap *incmap = (struct fiemap *)scratch;
252 381
253 if (wrk->dbuf) 382 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254 { 383 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255 free (wrk->dbuf); 384 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256 wrk->dbuf = 0; 385 incmap->fm_flags = fiemap->fm_flags;
257 } 386 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258}
259 387
260static void worker_free (worker *wrk) 388 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
261{
262 wrk->next->prev = wrk->prev;
263 wrk->prev->next = wrk->next;
264
265 free (wrk);
266}
267
268static volatile unsigned int nreqs, nready, npending;
269static volatile unsigned int max_idle = 4;
270static volatile unsigned int max_outstanding = 0xffffffff;
271static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273static mutex_t reslock = X_MUTEX_INIT;
274static mutex_t reqlock = X_MUTEX_INIT;
275static cond_t reqwait = X_COND_INIT;
276
277#if WORDACCESS_UNSAFE
278
279static unsigned int get_nready ()
280{
281 unsigned int retval;
282
283 X_LOCK (reqlock);
284 retval = nready;
285 X_UNLOCK (reqlock);
286
287 return retval;
288}
289
290static unsigned int get_npending ()
291{
292 unsigned int retval;
293
294 X_LOCK (reslock);
295 retval = npending;
296 X_UNLOCK (reslock);
297
298 return retval;
299}
300
301static unsigned int get_nthreads ()
302{
303 unsigned int retval;
304
305 X_LOCK (wrklock);
306 retval = started;
307 X_UNLOCK (wrklock);
308
309 return retval;
310}
311
312#else
313
314# define get_nready() nready
315# define get_npending() npending
316# define get_nthreads() started
317
318#endif
319
320/*
321 * a somewhat faster data structure might be nice, but
322 * with 8 priorities this actually needs <20 insns
323 * per shift, the most expensive operation.
324 */
325typedef struct {
326 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327 int size;
328} reqq;
329
330static reqq req_queue;
331static reqq res_queue;
332
333int reqq_push (reqq *q, aio_req req)
334{
335 int pri = req->pri;
336 req->next = 0;
337
338 if (q->qe[pri])
339 {
340 q->qe[pri]->next = req;
341 q->qe[pri] = req;
342 }
343 else
344 q->qe[pri] = q->qs[pri] = req;
345
346 return q->size++;
347}
348
349aio_req reqq_shift (reqq *q)
350{
351 int pri;
352
353 if (!q->size)
354 return 0; 389 return;
355 390
356 --q->size; 391 if (!incmap->fm_mapped_extents)
392 goto done;
357 393
358 for (pri = NUM_PRI; pri--; ) 394 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359 { 395 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360 aio_req req = q->qs[pri]; 396 errno = ENOMEM;
361
362 if (req) 397 if (!fiemap)
398 return;
399
400 req->ptr1 = fiemap;
401
402 for (count = 0; count < incmap->fm_mapped_extents; ++count)
363 { 403 {
364 if (!(q->qs[pri] = req->next)) 404 struct fiemap_extent *e = incmap->fm_extents + count;
365 q->qe[pri] = 0;
366 405
367 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
368 } 414 }
369 } 415 }
370 416
371 abort (); 417done:
372} 418 req->result = 0;
373 419
374static int poll_cb (); 420#else
375static 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
376static void req_destroy (aio_req req); 443static void req_destroy (aio_req req);
377static void req_cancel (aio_req req); 444static void req_cancel (aio_req req);
378 445
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
379/* must be called at most once */ 460/* must be called at most once */
380static SV *req_sv (aio_req req, const char *klass) 461static SV *
462req_sv (aio_req req, HV *stash)
381{ 463{
382 if (!req->self) 464 if (!req->self)
383 { 465 {
384 req->self = (SV *)newHV (); 466 req->self = (SV *)newHV ();
385 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 467 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386 } 468 }
387 469
388 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 470 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389} 471}
390 472
391static 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)
392{ 481{
393 MAGIC *mg; 482 MAGIC *mg;
394 483
395 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")))
396 croak ("object of class " AIO_REQ_KLASS " expected"); 489 croak ("object of class IO::AIO::REQ expected");
397 490
398 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 491 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399 492
400 return mg ? (aio_req)mg->mg_ptr : 0; 493 return mg ? (aio_req)mg->mg_ptr : 0;
401} 494}
402 495
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
403static void aio_grp_feed (aio_req grp) 533aio_grp_feed (aio_req grp)
404{ 534{
405 block_sig (); 535 if (grp->sv2 && SvOK (grp->sv2))
406
407 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408 { 536 {
409 int old_len = grp->size;
410
411 if (grp->sv2 && SvOK (grp->sv2))
412 {
413 dSP; 537 dSP;
414 538
415 ENTER; 539 ENTER;
416 SAVETMPS; 540 SAVETMPS;
417 PUSHMARK (SP); 541 PUSHMARK (SP);
418 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 542 XPUSHs (req_sv (grp, aio_grp_stash));
419 PUTBACK; 543 PUTBACK;
420 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 544 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421 SPAGAIN; 545 SPAGAIN;
422 FREETMPS; 546 FREETMPS;
423 LEAVE; 547 LEAVE;
424 }
425
426 /* stop if no progress has been made */
427 if (old_len == grp->size)
428 {
429 SvREFCNT_dec (grp->sv2);
430 grp->sv2 = 0;
431 break;
432 }
433 } 548 }
434
435 unblock_sig ();
436} 549}
437 550
438static void aio_grp_dec (aio_req grp) 551static void
552req_submit (eio_req *req)
439{ 553{
440 --grp->size; 554 eio_submit (req);
441 555
442 /* call feeder, if applicable */ 556 if (expect_false (on_next_submit))
443 aio_grp_feed (grp);
444
445 /* finish, if done */
446 if (!grp->size && grp->int1)
447 { 557 {
448 block_sig (); 558 dSP;
559 SV *cb = sv_2mortal (on_next_submit);
449 560
450 if (!req_invoke (grp)) 561 on_next_submit = 0;
451 {
452 req_destroy (grp);
453 unblock_sig ();
454 croak (0);
455 }
456 562
457 req_destroy (grp); 563 PUSHMARK (SP);
458 unblock_sig (); 564 PUTBACK;
565 call_sv (cb, G_DISCARD | G_EVAL);
459 } 566 }
460} 567}
461 568
569static int
462static int req_invoke (aio_req req) 570req_invoke (eio_req *req)
463{ 571{
464 dSP;
465
466 if (req->flags & FLAG_SV2_RO_OFF) 572 if (req->flags & FLAG_SV2_RO_OFF)
467 SvREADONLY_off (req->sv2); 573 SvREADONLY_off (req->sv2);
468 574
469 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 575 if (!EIO_CANCELLED (req) && req->callback)
470 { 576 {
577 dSP;
578 static SV *sv_result_cache; /* caches the result integer SV */
579 SV *sv_result;
580
471 ENTER; 581 ENTER;
472 SAVETMPS; 582 SAVETMPS;
473 PUSHMARK (SP); 583 PUSHMARK (SP);
474 EXTEND (SP, 1); 584 EXTEND (SP, 1);
475 585
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
476 switch (req->type) 599 switch (req->type)
477 { 600 {
601 case EIO_WD_OPEN:
602 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
603 break;
604
478 case REQ_READDIR: 605 case EIO_READDIR:
479 { 606 {
480 SV *rv = &PL_sv_undef; 607 SV *rv = &PL_sv_undef;
481 608
482 if (req->result >= 0) 609 if (req->result >= 0)
483 { 610 {
484 int i; 611 int i;
485 char *buf = req->ptr2; 612 char *names = (char *)req->ptr2;
613 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486 AV *av = newAV (); 614 AV *av = newAV ();
487 615
488 av_extend (av, req->result - 1); 616 av_extend (av, req->result - 1);
489 617
490 for (i = 0; i < req->result; ++i) 618 for (i = 0; i < req->result; ++i)
491 { 619 {
492 SV *sv = newSVpv (buf, 0); 620 if (req->int1 & EIO_READDIR_DENTS)
621 {
622 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493 623
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
494 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);
495 buf += SvCUR (sv) + 1; 652 names += SvCUR (name) + 1;
653 }
496 } 654 }
497 655
498 rv = sv_2mortal (newRV_noinc ((SV *)av)); 656 rv = sv_2mortal (newRV_noinc ((SV *)av));
499 } 657 }
500 658
501 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))));
502 } 663 }
503 break; 664 break;
504 665
505 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:
506 { 672 {
507 /* convert fd to fh */
508 SV *fh = &PL_sv_undef; 673 SV *rv = &PL_sv_undef;
509 674
675#ifndef _WIN32
510 if (req->result >= 0) 676 if (req->result >= 0)
511 { 677 {
678 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
512 GV *gv = (GV *)sv_newmortal (); 679 HV *hv = newHV ();
513 int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR); 680 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
514 char sym [64]; 681 * chooses to make it a struct.
515 int symlen;
516 682 */
517 symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result); 683 unsigned long fsid = 0;
518 gv_init (gv, stash, sym, symlen, 0); 684 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
519 685
520 symlen = snprintf ( 686 rv = sv_2mortal (newRV_noinc ((SV *)hv));
521 sym,
522 sizeof (sym),
523 "%s&=%d",
524 flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525 req->result
526 );
527 687
528 if (do_open (gv, sym, symlen, 0, 0, 0, 0)) 688 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
529 fh = (SV *)gv; 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);
530 } 699 }
700#endif
531 701
532 PUSHs (fh); 702 PUSHs (rv);
533 } 703 }
704
534 break; 705 break;
535 706
536 case REQ_GROUP: 707 case EIO_GROUP:
537 req->int1 = 2; /* mark group as finished */ 708 req->int1 = 2; /* mark group as finished */
538 709
539 if (req->sv1) 710 if (req->sv1)
540 { 711 {
541 int i; 712 int i;
… …
545 for (i = 0; i <= AvFILL (av); ++i) 716 for (i = 0; i <= AvFILL (av); ++i)
546 PUSHs (*av_fetch (av, i, 0)); 717 PUSHs (*av_fetch (av, i, 0));
547 } 718 }
548 break; 719 break;
549 720
550 case REQ_NOP: 721 case EIO_NOP:
551 case REQ_BUSY: 722 case EIO_BUSY:
552 break; 723 break;
553 724
554 case REQ_READLINK: 725 case EIO_READLINK:
726 case EIO_REALPATH:
555 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)
556 { 783 {
557 SvCUR_set (req->sv2, req->result); 784#if HAVE_FIEMAP
558 *SvEND (req->sv2) = 0;
559 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
560 } 816 }
817 else
818 PUSHs (sv_result);
561 break; 819 break;
562 820
563 case REQ_STAT: 821 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564 case REQ_LSTAT: 822 if (req->result > 0)
565 case REQ_FSTAT: 823 SvIV_set (sv_result, 0);
566 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 824 /* FALLTHROUGH */
567 PL_laststatval = req->result;
568 PL_statcache = *(Stat_t *)(req->ptr2);
569 PUSHs (sv_2mortal (newSViv (req->result)));
570 break;
571
572 case REQ_READ:
573 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574 *SvEND (req->sv2) = 0;
575 PUSHs (sv_2mortal (newSViv (req->result)));
576 break;
577 825
578 default: 826 default:
579 PUSHs (sv_2mortal (newSViv (req->result))); 827 PUSHs (sv_result);
580 break; 828 break;
581 } 829 }
582 830
583 errno = req->errorno; 831 errno = req->errorno;
584 832
585 PUTBACK; 833 PUTBACK;
586 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD); 834 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587 SPAGAIN; 835 SPAGAIN;
588 836
837 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
838 SvREFCNT_dec (sv_result);
839 else
840 sv_result_cache = sv_result;
841
589 FREETMPS; 842 FREETMPS;
590 LEAVE; 843 LEAVE;
591 844
592 PUTBACK; 845 PUTBACK;
593 } 846 }
594 847
595 if (req->grp)
596 {
597 aio_req grp = req->grp;
598
599 /* unlink request */
600 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603 if (grp->grp_first == req)
604 grp->grp_first = req->grp_next;
605
606 aio_grp_dec (grp);
607 }
608
609 return !SvTRUE (ERRSV); 848 return !!SvTRUE (ERRSV);
610} 849}
611 850
851static void
612static void req_destroy (aio_req req) 852req_destroy (aio_req req)
613{ 853{
614 if (req->self) 854 if (req->self)
615 { 855 {
616 sv_unmagic (req->self, PERL_MAGIC_ext); 856 sv_unmagic (req->self, PERL_MAGIC_ext);
617 SvREFCNT_dec (req->self); 857 SvREFCNT_dec (req->self);
618 } 858 }
619 859
620 SvREFCNT_dec (req->sv1); 860 SvREFCNT_dec (req->sv1);
621 SvREFCNT_dec (req->sv2); 861 SvREFCNT_dec (req->sv2);
862 SvREFCNT_dec (req->sv3);
863 SvREFCNT_dec (req->sv4);
622 SvREFCNT_dec (req->callback); 864 SvREFCNT_dec (req->callback);
623 865
624 if (req->flags & FLAG_PTR2_FREE)
625 free (req->ptr2);
626
627 Safefree (req); 866 free (req);
628} 867}
629 868
869static void
630static void req_cancel_subs (aio_req grp) 870req_cancel_subs (aio_req grp)
631{ 871{
632 aio_req sub;
633
634 if (grp->type != REQ_GROUP) 872 if (grp->type != EIO_GROUP)
635 return; 873 return;
636 874
637 SvREFCNT_dec (grp->sv2); 875 SvREFCNT_dec (grp->sv2);
638 grp->sv2 = 0; 876 grp->sv2 = 0;
639 877
640 for (sub = grp->grp_first; sub; sub = sub->grp_next) 878 eio_grp_cancel (grp);
641 req_cancel (sub);
642} 879}
643 880
644static void req_cancel (aio_req req) 881static void ecb_cold
882create_respipe (void)
645{ 883{
646 req->flags |= FLAG_CANCELLED; 884 if (s_epipe_renew (&respipe))
647 885 croak ("IO::AIO: unable to initialize result pipe");
648 req_cancel_subs (req);
649} 886}
650
651#ifdef USE_SOCKETS_AS_HANDLES
652# define TO_SOCKET(x) (win32_get_osfhandle (x))
653#else
654# define TO_SOCKET(x) (x)
655#endif
656 887
657static void 888static void
658create_respipe () 889poll_wait (void)
659{ 890{
660 int old_readfd = respipe [0];
661
662 if (respipe [1] >= 0)
663 respipe_close (TO_SOCKET (respipe [1]));
664
665#ifdef _WIN32
666 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667#else
668 if (pipe (respipe))
669#endif
670 croak ("unable to initialize result pipe");
671
672 if (old_readfd >= 0)
673 {
674 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675 croak ("unable to initialize result pipe(2)");
676
677 respipe_close (respipe [0]);
678 respipe [0] = old_readfd;
679 }
680
681#ifdef _WIN32
682 int arg = 1;
683 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685#else
686 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688#endif
689 croak ("unable to initialize result pipe(3)");
690
691 respipe_osf [0] = TO_SOCKET (respipe [0]);
692 respipe_osf [1] = TO_SOCKET (respipe [1]);
693}
694
695X_THREAD_PROC (aio_proc);
696
697static void start_thread (void)
698{
699 worker *wrk = calloc (1, sizeof (worker));
700
701 if (!wrk)
702 croak ("unable to allocate worker thread data");
703
704 X_LOCK (wrklock);
705
706 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707 {
708 wrk->prev = &wrk_first;
709 wrk->next = wrk_first.next;
710 wrk_first.next->prev = wrk;
711 wrk_first.next = wrk;
712 ++started;
713 }
714 else
715 free (wrk);
716
717 X_UNLOCK (wrklock);
718}
719
720static void maybe_start_thread ()
721{
722 if (get_nthreads () >= wanted)
723 return;
724
725 /* todo: maybe use idle here, but might be less exact */
726 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727 return;
728
729 start_thread ();
730}
731
732static void req_send (aio_req req)
733{
734 block_sig ();
735
736 ++nreqs;
737
738 X_LOCK (reqlock);
739 ++nready;
740 reqq_push (&req_queue, req);
741 X_COND_SIGNAL (reqwait);
742 X_UNLOCK (reqlock);
743
744 unblock_sig ();
745
746 maybe_start_thread ();
747}
748
749static void end_thread (void)
750{
751 aio_req req;
752
753 Newz (0, req, 1, aio_cb);
754
755 req->type = REQ_QUIT;
756 req->pri = PRI_MAX + PRI_BIAS;
757
758 X_LOCK (reqlock);
759 reqq_push (&req_queue, req);
760 X_COND_SIGNAL (reqwait);
761 X_UNLOCK (reqlock);
762
763 X_LOCK (wrklock);
764 --started;
765 X_UNLOCK (wrklock);
766}
767
768static void set_max_idle (int nthreads)
769{
770 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771 max_idle = nthreads <= 0 ? 1 : nthreads;
772 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773}
774
775static void min_parallel (int nthreads)
776{
777 if (wanted < nthreads)
778 wanted = nthreads;
779}
780
781static void max_parallel (int nthreads)
782{
783 if (wanted > nthreads)
784 wanted = nthreads;
785
786 while (started > wanted)
787 end_thread ();
788}
789
790static void poll_wait ()
791{
792 fd_set rfd;
793
794 while (nreqs) 891 while (eio_nreqs ())
795 { 892 {
796 int size; 893 int size;
797 if (WORDACCESS_UNSAFE) X_LOCK (reslock); 894
895 X_LOCK (EIO_POOL->reslock);
798 size = res_queue.size; 896 size = EIO_POOL->res_queue.size;
799 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); 897 X_UNLOCK (EIO_POOL->reslock);
800 898
801 if (size) 899 if (size)
802 return; 900 return;
803 901
804 maybe_start_thread (); 902 etp_maybe_start_thread (EIO_POOL);
805 903
806 FD_ZERO (&rfd); 904 s_epipe_wait (&respipe);
807 FD_SET (respipe [0], &rfd);
808
809 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810 } 905 }
811} 906}
812 907
813static int poll_cb () 908static int
909poll_cb (void)
814{ 910{
815 dSP;
816 int count = 0;
817 int maxreqs = max_poll_reqs;
818 int do_croak = 0;
819 struct timeval tv_start, tv_now;
820 aio_req req;
821
822 if (max_poll_time)
823 gettimeofday (&tv_start, 0);
824
825 block_sig ();
826
827 for (;;) 911 for (;;)
828 { 912 {
829 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)
830 { 983 {
831 maybe_start_thread (); 984 path = AvARRAY (rv)[1];
985 wdob = AvARRAY (rv)[0];
832 986
833 X_LOCK (reslock); 987 if (SvOK (wdob))
834 req = reqq_shift (&res_queue);
835
836 if (req)
837 { 988 {
838 --npending; 989 *wd = SvAIO_WD (wdob);
839 990 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
840 if (!res_queue.size)
841 {
842 /* read any signals sent by the worker threads */
843 char buf [4];
844 while (respipe_read (respipe [0], buf, 4) == 4)
845 ;
846 }
847 }
848
849 X_UNLOCK (reslock);
850
851 if (!req)
852 break;
853
854 --nreqs;
855
856 if (req->type == REQ_GROUP && req->size)
857 {
858 req->int1 = 1; /* mark request as delayed */
859 continue;
860 } 991 }
861 else 992 else
862 { 993 *wd = EIO_INVALID_WD;
863 if (!req_invoke (req))
864 {
865 req_destroy (req);
866 unblock_sig ();
867 croak (0);
868 }
869
870 count++;
871 }
872
873 req_destroy (req);
874
875 if (maxreqs && !--maxreqs)
876 break;
877
878 if (max_poll_time)
879 {
880 gettimeofday (&tv_now, 0);
881
882 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883 break;
884 }
885 } 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 }
886 1005
887 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)));
888 break; 1029 break;
889 1030
890 poll_wait (); 1031 default:
891 1032 req->type = type_path;
892 ++maxreqs; 1033 req_set_path1 (req, fh_or_path);
1034 break;
893 } 1035 }
894
895 unblock_sig ();
896 return count;
897} 1036}
898 1037
899/*****************************************************************************/ 1038/*****************************************************************************/
900/* work around various missing functions */
901 1039
902#if !HAVE_PREADWRITE 1040static void
903# define pread aio_pread 1041ts_set (struct timespec *ts, NV value)
904# define pwrite aio_pwrite
905
906/*
907 * make our pread/pwrite safe against themselves, but not against
908 * normal read/write by using a mutex. slows down execution a lot,
909 * but that's your problem, not mine.
910 */
911static mutex_t preadwritelock = X_MUTEX_INIT;
912
913static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914{ 1042{
915 ssize_t res; 1043 ts->tv_sec = value;
916 off_t ooffset; 1044 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
917
918 X_LOCK (preadwritelock);
919 ooffset = lseek (fd, 0, SEEK_CUR);
920 lseek (fd, offset, SEEK_SET);
921 res = read (fd, buf, count);
922 lseek (fd, ooffset, SEEK_SET);
923 X_UNLOCK (preadwritelock);
924
925 return res;
926} 1045}
927 1046
928static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1047static NV
1048ts_get (const struct timespec *ts)
929{ 1049{
930 ssize_t res; 1050 return ts->tv_sec + ts->tv_nsec * 1e-9;
931 off_t ooffset;
932
933 X_LOCK (preadwritelock);
934 ooffset = lseek (fd, 0, SEEK_CUR);
935 lseek (fd, offset, SEEK_SET);
936 res = write (fd, buf, count);
937 lseek (fd, offset, SEEK_SET);
938 X_UNLOCK (preadwritelock);
939
940 return res;
941} 1051}
942#endif
943 1052
944#ifndef HAVE_FUTIMES 1053/*****************************************************************************/
945 1054
946# define utimes(path,times) aio_utimes (path, times) 1055XS(boot_IO__AIO) ecb_cold;
947# define futimes(fd,times) aio_futimes (fd, times)
948 1056
949int aio_utimes (const char *filename, const struct timeval times[2]) 1057MODULE = IO::AIO PACKAGE = IO::AIO
950{
951 if (times)
952 {
953 struct utimbuf buf;
954 1058
955 buf.actime = times[0].tv_sec; 1059PROTOTYPES: ENABLE
956 buf.modtime = times[1].tv_sec;
957 1060
958 return utime (filename, &buf); 1061BOOT:
959 }
960 else
961 return utime (filename, 0);
962}
963
964int aio_futimes (int fd, const struct timeval tv[2])
965{ 1062{
966 errno = ENOSYS; 1063 static const struct {
967 return -1; 1064 const char *name;
968} 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 },
969 1070
970#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)
971 1076
972#if !HAVE_FDATASYNC 1077 /* for lseek */
973# define fdatasync fsync 1078 const_iv (SEEK_DATA)
974#endif 1079 const_iv (SEEK_HOLE)
975 1080
976#if !HAVE_READAHEAD 1081 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
977# 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)
978 1087
979static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1088 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
980{ 1089 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
981 size_t todo = count; 1090 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
982 dBUF; 1091 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1092 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
983 1093
984 while (todo > 0) 1094 /* the second block will be 0 when missing */
985 { 1095 const_iv (O_ACCMODE)
986 size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987 1096
988 pread (fd, aio_buf, len, offset); 1097 const_iv (O_RDONLY)
989 offset += len; 1098 const_iv (O_WRONLY)
990 todo -= len; 1099 const_iv (O_RDWR)
991 } 1100 const_iv (O_CREAT)
1101 const_iv (O_TRUNC)
1102 const_iv (O_EXCL)
1103 const_iv (O_APPEND)
992 1104
993 errno = 0; 1105 const_iv (O_ASYNC)
994 return count; 1106 const_iv (O_DIRECT)
995} 1107 const_iv (O_NOATIME)
996 1108
997#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)
998 1122
999#if !HAVE_READDIR_R 1123 const_iv (S_IFIFO)
1000# 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)
1001 1132
1002static mutex_t readdirlock = X_MUTEX_INIT; 1133 const_iv (ST_RDONLY)
1003 1134 const_iv (ST_NOSUID)
1004static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res) 1135 const_iv (ST_NODEV)
1005{ 1136 const_iv (ST_NOEXEC)
1006 X_DIRENT *e; 1137 const_iv (ST_SYNCHRONOUS)
1007 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)
1008 1145
1009 X_LOCK (readdirlock); 1146 const_iv (PROT_NONE)
1147 const_iv (PROT_EXEC)
1148 const_iv (PROT_READ)
1149 const_iv (PROT_WRITE)
1010 1150
1011 e = readdir (dirp); 1151 const_iv (MAP_PRIVATE)
1012 errorno = errno; 1152 const_iv (MAP_SHARED)
1153 const_iv (MAP_FIXED)
1154 const_iv (MAP_ANONYMOUS)
1013 1155
1014 if (e) 1156 /* linuxish */
1015 { 1157 const_iv (MAP_LOCKED)
1016 *res = ent; 1158 const_iv (MAP_NORESERVE)
1017 strcpy (ent->d_name, e->d_name); 1159 const_iv (MAP_POPULATE)
1018 } 1160 const_iv (MAP_NONBLOCK)
1019 else 1161 const_iv (MAP_GROWSDOWN)
1020 *res = 0; 1162 const_iv (MAP_32BIT)
1163 const_iv (MAP_HUGETLB)
1164 const_iv (MAP_STACK)
1021 1165
1022 X_UNLOCK (readdirlock); 1166 const_iv (MREMAP_MAYMOVE)
1167 const_iv (MREMAP_FIXED)
1023 1168
1024 errno = errorno; 1169 const_iv (F_DUPFD_CLOEXEC)
1025 return e ? 0 : -1;
1026}
1027#endif
1028 1170
1029/* sendfile always needs emulation */ 1171 const_iv (MSG_CMSG_CLOEXEC)
1030static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1172 const_iv (SOCK_CLOEXEC)
1031{
1032 ssize_t res;
1033 1173
1034 if (!count) 1174 const_iv (F_OFD_GETLK)
1035 return 0; 1175 const_iv (F_OFD_SETLK)
1176 const_iv (F_OFD_GETLKW)
1036 1177
1037#if HAVE_SENDFILE 1178 const_iv (FIFREEZE)
1038# if __linux 1179 const_iv (FITHAW)
1039 res = sendfile (ofd, ifd, &offset, count); 1180 const_iv (FITRIM)
1181 const_iv (FICLONE)
1182 const_iv (FICLONERANGE)
1183 const_iv (FIDEDUPERANGE)
1040 1184
1041# elif __freebsd 1185 const_iv (FS_IOC_GETFLAGS)
1042 /* 1186 const_iv (FS_IOC_SETFLAGS)
1043 * Of course, the freebsd sendfile is a dire hack with no thoughts 1187 const_iv (FS_IOC_GETVERSION)
1044 * wasted on making it similar to other I/O functions. 1188 const_iv (FS_IOC_SETVERSION)
1045 */ 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 */
1046 { 1328 {
1047 off_t sbytes; 1329 int pipefd [2];
1048 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049 1330
1050 if (res < 0 && sbytes) 1331 if (
1051 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1332#ifdef _WIN32
1052 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];
1053 } 1343 }
1054 1344
1055# elif __hpux 1345 reinit ();
1056 res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058# elif __solaris
1059 {
1060 struct sendfilevec vec;
1061 size_t sbytes;
1062
1063 vec.sfv_fd = ifd;
1064 vec.sfv_flag = 0;
1065 vec.sfv_off = offset;
1066 vec.sfv_len = count;
1067
1068 res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070 if (res < 0 && sbytes)
1071 res = sbytes;
1072 }
1073
1074# endif
1075#else
1076 res = -1;
1077 errno = ENOSYS;
1078#endif
1079
1080 if (res < 0
1081 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082#if __solaris
1083 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084#endif
1085 )
1086 )
1087 {
1088 /* emulate sendfile. this is a major pain in the ass */
1089 dBUF;
1090
1091 res = 0;
1092
1093 while (count)
1094 {
1095 ssize_t cnt;
1096
1097 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099 if (cnt <= 0)
1100 {
1101 if (cnt && !res) res = -1;
1102 break;
1103 }
1104
1105 cnt = write (ofd, aio_buf, cnt);
1106
1107 if (cnt <= 0)
1108 {
1109 if (cnt && !res) res = -1;
1110 break;
1111 }
1112
1113 offset += cnt;
1114 res += cnt;
1115 count -= cnt;
1116 }
1117 }
1118
1119 return res;
1120} 1346}
1121 1347
1122/* read a full directory */
1123static void scandir_ (aio_req req, worker *self)
1124{
1125 DIR *dirp;
1126 union
1127 {
1128 X_DIRENT d;
1129 char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130 } *u;
1131 X_DIRENT *entp;
1132 char *name, *names;
1133 int memlen = 4096;
1134 int memofs = 0;
1135 int res = 0;
1136
1137 X_LOCK (wrklock);
1138 self->dirp = dirp = opendir (req->ptr1);
1139 self->dbuf = u = malloc (sizeof (*u));
1140 req->flags |= FLAG_PTR2_FREE;
1141 req->ptr2 = names = malloc (memlen);
1142 X_UNLOCK (wrklock);
1143
1144 if (dirp && u && names)
1145 for (;;)
1146 {
1147 errno = 0;
1148 readdir_r (dirp, &u->d, &entp);
1149
1150 if (!entp)
1151 break;
1152
1153 name = entp->d_name;
1154
1155 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156 {
1157 int len = strlen (name) + 1;
1158
1159 res++;
1160
1161 while (memofs + len > memlen)
1162 {
1163 memlen *= 2;
1164 X_LOCK (wrklock);
1165 req->ptr2 = names = realloc (names, memlen);
1166 X_UNLOCK (wrklock);
1167
1168 if (!names)
1169 break;
1170 }
1171
1172 memcpy (names + memofs, name, len);
1173 memofs += len;
1174 }
1175 }
1176
1177 if (errno)
1178 res = -1;
1179
1180 req->result = res;
1181}
1182
1183/*****************************************************************************/
1184
1185X_THREAD_PROC (aio_proc)
1186{
1187 {//D
1188 aio_req req;
1189 struct timespec ts;
1190 worker *self = (worker *)thr_arg;
1191
1192 /* try to distribute timeouts somewhat randomly */
1193 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195 for (;;)
1196 {
1197 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199 X_LOCK (reqlock);
1200
1201 for (;;)
1202 {
1203 self->req = req = reqq_shift (&req_queue);
1204
1205 if (req)
1206 break;
1207
1208 ++idle;
1209
1210 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211 == ETIMEDOUT)
1212 {
1213 if (idle > max_idle)
1214 {
1215 --idle;
1216 X_UNLOCK (reqlock);
1217 X_LOCK (wrklock);
1218 --started;
1219 X_UNLOCK (wrklock);
1220 goto quit;
1221 }
1222
1223 /* we are allowed to idle, so do so without any timeout */
1224 X_COND_WAIT (reqwait, reqlock);
1225 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226 }
1227
1228 --idle;
1229 }
1230
1231 --nready;
1232
1233 X_UNLOCK (reqlock);
1234
1235 errno = 0; /* strictly unnecessary */
1236
1237 if (!(req->flags & FLAG_CANCELLED))
1238 switch (req->type)
1239 {
1240 case REQ_READ: req->result = req->offs >= 0
1241 ? pread (req->int1, req->ptr1, req->size, req->offs)
1242 : read (req->int1, req->ptr1, req->size); break;
1243 case REQ_WRITE: req->result = req->offs >= 0
1244 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245 : write (req->int1, req->ptr1, req->size); break;
1246
1247 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258 case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259 case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262 case REQ_CLOSE: req->result = close (req->int1); break;
1263 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1273 case REQ_FSYNC: req->result = fsync (req->int1); break;
1274 case REQ_READDIR: scandir_ (req, self); break;
1275
1276 case REQ_BUSY:
1277#ifdef _WIN32
1278 Sleep (req->nv1 * 1000.);
1279#else
1280 {
1281 struct timeval tv;
1282
1283 tv.tv_sec = req->nv1;
1284 tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1285
1286 req->result = select (0, 0, 0, 0, &tv);
1287 }
1288#endif
1289 break;
1290
1291 case REQ_UTIME:
1292 case REQ_FUTIME:
1293 {
1294 struct timeval tv[2];
1295 struct timeval *times;
1296
1297 if (req->nv1 != -1. || req->nv2 != -1.)
1298 {
1299 tv[0].tv_sec = req->nv1;
1300 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1301 tv[1].tv_sec = req->nv2;
1302 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1303
1304 times = tv;
1305 }
1306 else
1307 times = 0;
1308
1309
1310 req->result = req->type == REQ_FUTIME
1311 ? futimes (req->int1, times)
1312 : utimes (req->ptr1, times);
1313 }
1314
1315 case REQ_GROUP:
1316 case REQ_NOP:
1317 break;
1318
1319 case REQ_QUIT:
1320 goto quit;
1321
1322 default:
1323 req->result = -1;
1324 break;
1325 }
1326
1327 req->errorno = errno;
1328
1329 X_LOCK (reslock);
1330
1331 ++npending;
1332
1333 if (!reqq_push (&res_queue, req))
1334 {
1335 /* write a dummy byte to the pipe so fh becomes ready */
1336 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1337
1338 /* optionally signal the main thread asynchronously */
1339 if (main_sig)
1340 pthread_kill (main_tid, main_sig);
1341 }
1342
1343 self->req = 0;
1344 worker_clear (self);
1345
1346 X_UNLOCK (reslock);
1347 }
1348
1349quit:
1350 X_LOCK (wrklock);
1351 worker_free (self);
1352 X_UNLOCK (wrklock);
1353
1354 return 0;
1355 }//D
1356}
1357
1358/*****************************************************************************/
1359
1360static void atfork_prepare (void)
1361{
1362 X_LOCK (wrklock);
1363 X_LOCK (reqlock);
1364 X_LOCK (reslock);
1365#if !HAVE_PREADWRITE
1366 X_LOCK (preadwritelock);
1367#endif
1368#if !HAVE_READDIR_R
1369 X_LOCK (readdirlock);
1370#endif
1371}
1372
1373static void atfork_parent (void)
1374{
1375#if !HAVE_READDIR_R
1376 X_UNLOCK (readdirlock);
1377#endif
1378#if !HAVE_PREADWRITE
1379 X_UNLOCK (preadwritelock);
1380#endif
1381 X_UNLOCK (reslock);
1382 X_UNLOCK (reqlock);
1383 X_UNLOCK (wrklock);
1384}
1385
1386static void atfork_child (void)
1387{
1388 aio_req prv;
1389
1390 while (prv = reqq_shift (&req_queue))
1391 req_destroy (prv);
1392
1393 while (prv = reqq_shift (&res_queue))
1394 req_destroy (prv);
1395
1396 while (wrk_first.next != &wrk_first)
1397 {
1398 worker *wrk = wrk_first.next;
1399
1400 if (wrk->req)
1401 req_destroy (wrk->req);
1402
1403 worker_clear (wrk);
1404 worker_free (wrk);
1405 }
1406
1407 started = 0;
1408 idle = 0;
1409 nreqs = 0;
1410 nready = 0;
1411 npending = 0;
1412
1413 create_respipe ();
1414
1415 atfork_parent ();
1416}
1417
1418#define dREQ \
1419 aio_req req; \
1420 int req_pri = next_pri; \
1421 next_pri = DEFAULT_PRI + PRI_BIAS; \
1422 \
1423 if (SvOK (callback) && !SvROK (callback)) \
1424 croak ("callback must be undef or of reference type"); \
1425 \
1426 Newz (0, req, 1, aio_cb); \
1427 if (!req) \
1428 croak ("out of memory during aio_req allocation"); \
1429 \
1430 req->callback = newSVsv (callback); \
1431 req->pri = req_pri
1432
1433#define REQ_SEND \
1434 req_send (req); \
1435 \
1436 if (GIMME_V != G_VOID) \
1437 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1438
1439MODULE = IO::AIO PACKAGE = IO::AIO
1440
1441PROTOTYPES: ENABLE
1442
1443BOOT:
1444{
1445 stash = gv_stashpv ("IO::AIO", 1);
1446
1447 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1448 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1449 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1450 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1451 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1452#ifdef _WIN32
1453 X_MUTEX_CHECK (wrklock);
1454 X_MUTEX_CHECK (reslock);
1455 X_MUTEX_CHECK (reqlock);
1456 X_MUTEX_CHECK (reqwait);
1457 X_MUTEX_CHECK (preadwritelock);
1458 X_MUTEX_CHECK (readdirlock);
1459
1460 X_COND_CHECK (reqwait);
1461#else
1462 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464#endif
1465
1466 create_respipe ();
1467
1468 X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1469}
1470
1471void 1348void
1349reinit ()
1350 PROTOTYPE:
1351
1352void
1472max_poll_reqs (int nreqs) 1353max_poll_reqs (unsigned int nreqs)
1473 PROTOTYPE: $ 1354 PROTOTYPE: $
1474 CODE: 1355 CODE:
1475 max_poll_reqs = nreqs; 1356 eio_set_max_poll_reqs (nreqs);
1476 1357
1477void 1358void
1478max_poll_time (double nseconds) 1359max_poll_time (double nseconds)
1479 PROTOTYPE: $ 1360 PROTOTYPE: $
1480 CODE: 1361 CODE:
1481 max_poll_time = nseconds * AIO_TICKS; 1362 eio_set_max_poll_time (nseconds);
1482 1363
1483void 1364void
1484min_parallel (int nthreads) 1365min_parallel (unsigned int nthreads)
1485 PROTOTYPE: $
1486
1487void
1488max_parallel (int nthreads)
1489 PROTOTYPE: $
1490
1491void
1492max_idle (int nthreads)
1493 PROTOTYPE: $ 1366 PROTOTYPE: $
1494 CODE: 1367 CODE:
1495 set_max_idle (nthreads); 1368 eio_set_min_parallel (nthreads);
1496 1369
1497int 1370void
1498max_outstanding (int maxreqs) 1371max_parallel (unsigned int nthreads)
1499 PROTOTYPE: $ 1372 PROTOTYPE: $
1500 CODE: 1373 CODE:
1501 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:
1502 max_outstanding = maxreqs; 1392 max_outstanding = maxreqs;
1503 OUTPUT:
1504 RETVAL
1505 1393
1506void 1394void
1507aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1395aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1508 PROTOTYPE: $$$;$
1509 PPCODE: 1396 PPCODE:
1510{ 1397{
1511 dREQ; 1398 dREQ;
1512 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
1513 req->type = REQ_OPEN; 1412 req->type = EIO_OPEN;
1514 req->sv1 = newSVsv (pathname); 1413 req_set_path1 (req, pathname);
1515 req->ptr1 = SvPVbyte_nolen (req->sv1);
1516 req->int1 = flags; 1414 req->int1 = flags;
1517 req->mode = mode; 1415 req->int2 = mode;
1518 1416
1519 REQ_SEND; 1417 REQ_SEND;
1520} 1418}
1521 1419
1522void 1420void
1523aio_fsync (SV *fh, SV *callback=&PL_sv_undef) 1421aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1524 PROTOTYPE: $;$
1525 ALIAS: 1422 ALIAS:
1526 aio_fsync = REQ_FSYNC 1423 aio_fsync = EIO_FSYNC
1527 aio_fdatasync = REQ_FDATASYNC 1424 aio_fdatasync = EIO_FDATASYNC
1425 aio_syncfs = EIO_SYNCFS
1528 PPCODE: 1426 PPCODE:
1529{ 1427{
1428 int fd = s_fileno_croak (fh, 0);
1530 dREQ; 1429 dREQ;
1531 1430
1532 req->type = ix; 1431 req->type = ix;
1533 req->sv1 = newSVsv (fh); 1432 req->sv1 = newSVsv (fh);
1534 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1433 req->int1 = fd;
1535 1434
1536 REQ_SEND (req); 1435 REQ_SEND;
1537} 1436}
1538 1437
1539int
1540_dup (int fd)
1541 PROTOTYPE: $
1542 CODE:
1543 RETVAL = dup (fd);
1544 OUTPUT:
1545 RETVAL
1546
1547void 1438void
1548_aio_close (int fd, SV *callback=&PL_sv_undef) 1439aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1549 PROTOTYPE: $;$
1550 PPCODE: 1440 PPCODE:
1551{ 1441{
1442 int fd = s_fileno_croak (fh, 0);
1552 dREQ; 1443 dREQ;
1553 1444
1554 req->type = REQ_CLOSE; 1445 req->type = EIO_SYNC_FILE_RANGE;
1446 req->sv1 = newSVsv (fh);
1555 req->int1 = fd; 1447 req->int1 = fd;
1448 req->offs = offset;
1449 req->size = nbytes;
1450 req->int2 = flags;
1556 1451
1557 REQ_SEND (req); 1452 REQ_SEND;
1558} 1453}
1559 1454
1560void 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
1561aio_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)
1562 ALIAS: 1505 ALIAS:
1563 aio_read = REQ_READ 1506 aio_read = EIO_READ
1564 aio_write = REQ_WRITE 1507 aio_write = EIO_WRITE
1565 PROTOTYPE: $$$$$;$
1566 PPCODE: 1508 PPCODE:
1567{ 1509{
1568 STRLEN svlen; 1510 STRLEN svlen;
1511 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569 char *svptr = SvPVbyte (data, svlen); 1512 char *svptr = SvPVbyte (data, svlen);
1570 UV len = SvUV (length); 1513 UV len = SvUV (length);
1571 1514
1572 SvUPGRADE (data, SVt_PV);
1573 SvPOK_on (data);
1574
1575 if (dataoffset < 0) 1515 if (dataoffset < 0)
1576 dataoffset += svlen; 1516 dataoffset += svlen;
1577 1517
1578 if (dataoffset < 0 || dataoffset > svlen) 1518 if (dataoffset < 0 || dataoffset > svlen)
1579 croak ("dataoffset outside of data scalar"); 1519 croak ("dataoffset outside of data scalar");
1580 1520
1581 if (ix == REQ_WRITE) 1521 if (ix == EIO_WRITE)
1582 { 1522 {
1583 /* write: check length and adjust. */ 1523 /* write: check length and adjust. */
1584 if (!SvOK (length) || len + dataoffset > svlen) 1524 if (!SvOK (length) || len + dataoffset > svlen)
1585 len = svlen - dataoffset; 1525 len = svlen - dataoffset;
1586 } 1526 }
1587 else 1527 else
1588 { 1528 {
1589 /* read: grow scalar as necessary */ 1529 /* read: check type and grow scalar as necessary */
1530 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1590 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");
1591 } 1534 }
1592
1593 if (len < 0)
1594 croak ("length must not be negative");
1595 1535
1596 { 1536 {
1597 dREQ; 1537 dREQ;
1598 1538
1599 req->type = ix; 1539 req->type = ix;
1600 req->sv1 = newSVsv (fh); 1540 req->sv1 = newSVsv (fh);
1601 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1541 req->int1 = fd;
1602 : IoOFP (sv_2io (fh)));
1603 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1542 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604 req->size = len; 1543 req->size = len;
1605 req->sv2 = SvREFCNT_inc (data); 1544 req->sv2 = SvREFCNT_inc (data);
1606 req->ptr1 = (char *)svptr + dataoffset; 1545 req->ptr2 = (char *)svptr + dataoffset;
1607 req->stroffset = dataoffset; 1546 req->stroffset = dataoffset;
1608 1547
1609 if (!SvREADONLY (data)) 1548 if (!SvREADONLY (data))
1610 { 1549 {
1611 SvREADONLY_on (data); 1550 SvREADONLY_on (data);
… …
1615 REQ_SEND; 1554 REQ_SEND;
1616 } 1555 }
1617} 1556}
1618 1557
1619void 1558void
1620aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1559aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1621 PROTOTYPE: $$;$ 1560 ALIAS:
1561 aio_ioctl = EIO_IOCTL
1562 aio_fcntl = EIO_FCNTL
1622 PPCODE: 1563 PPCODE:
1623{ 1564{
1624 SV *data; 1565 int fd = s_fileno_croak (fh, 0);
1625 dREQ; 1566 char *svptr;
1626 1567
1627 data = newSV (NAME_MAX); 1568 if (SvPOK (arg) || !SvNIOK (arg))
1628 SvPOK_on (data);
1629
1630 req->type = REQ_READLINK;
1631 req->sv1 = newSVsv (path);
1632 req->ptr2 = SvPVbyte_nolen (req->sv1);
1633 req->sv2 = data;
1634 req->ptr1 = SvPVbyte_nolen (data);
1635
1636 REQ_SEND;
1637}
1638
1639void
1640aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1641 PROTOTYPE: $$$$;$
1642 PPCODE:
1643{
1644 dREQ;
1645
1646 req->type = REQ_SENDFILE;
1647 req->sv1 = newSVsv (out_fh);
1648 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1649 req->sv2 = newSVsv (in_fh);
1650 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1651 req->offs = SvVAL64 (in_offset);
1652 req->size = length;
1653
1654 REQ_SEND;
1655}
1656
1657void
1658aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1659 PROTOTYPE: $$$;$
1660 PPCODE:
1661{
1662 dREQ;
1663
1664 req->type = REQ_READAHEAD;
1665 req->sv1 = newSVsv (fh);
1666 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1667 req->offs = SvVAL64 (offset);
1668 req->size = length;
1669
1670 REQ_SEND;
1671}
1672
1673void
1674aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675 ALIAS:
1676 aio_stat = REQ_STAT
1677 aio_lstat = REQ_LSTAT
1678 PPCODE:
1679{
1680 dREQ;
1681
1682 req->ptr2 = malloc (sizeof (Stat_t));
1683 if (!req->ptr2)
1684 { 1569 {
1685 req_destroy (req); 1570 STRLEN svlen;
1686 croak ("out of memory during aio_stat statdata allocation"); 1571 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1687 } 1572#ifdef IOCPARM_LEN
1573 STRLEN need = IOCPARM_LEN (request);
1574#else
1575 STRLEN need = 256;
1576#endif
1688 1577
1689 req->flags |= FLAG_PTR2_FREE; 1578 if (svlen < need)
1690 req->sv1 = newSVsv (fh_or_path); 1579 svptr = SvGROW (arg, need);
1691
1692 if (SvPOK (fh_or_path))
1693 {
1694 req->type = ix;
1695 req->ptr1 = SvPVbyte_nolen (req->sv1);
1696 } 1580 }
1697 else 1581 else
1582 svptr = (char *)SvIV (arg);
1583
1698 { 1584 {
1585 dREQ;
1586
1699 req->type = REQ_FSTAT; 1587 req->type = ix;
1700 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;
1701 } 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);
1702 1609
1703 REQ_SEND; 1610 REQ_SEND;
1704} 1611}
1705 1612
1706void 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
1707aio_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)
1708 PPCODE: 1715 PPCODE:
1709{ 1716{
1710 dREQ; 1717 dREQ;
1711 1718
1712 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1719 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1720 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714 req->sv1 = newSVsv (fh_or_path); 1721 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1715
1716 if (SvPOK (fh_or_path))
1717 {
1718 req->type = REQ_UTIME;
1719 req->ptr1 = SvPVbyte_nolen (req->sv1);
1720 }
1721 else
1722 {
1723 req->type = REQ_FUTIME;
1724 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725 }
1726 1722
1727 REQ_SEND; 1723 REQ_SEND;
1728} 1724}
1729 1725
1730void 1726void
1731aio_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)
1732 PPCODE: 1728 PPCODE:
1733{ 1729{
1734 dREQ; 1730 dREQ;
1735 1731
1736 req->sv1 = newSVsv (fh_or_path);
1737 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1732 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738 1733 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1739 if (SvPOK (fh_or_path))
1740 {
1741 req->type = REQ_TRUNCATE;
1742 req->ptr1 = SvPVbyte_nolen (req->sv1);
1743 }
1744 else
1745 {
1746 req->type = REQ_FTRUNCATE;
1747 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748 }
1749 1734
1750 REQ_SEND; 1735 REQ_SEND;
1751} 1736}
1752 1737
1753void 1738void
1754aio_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)
1755 PPCODE: 1740 PPCODE:
1756{ 1741{
1757 dREQ; 1742 dREQ;
1758 1743
1759 req->mode = mode; 1744 req->int2 = mode;
1760 req->sv1 = newSVsv (fh_or_path); 1745 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1761
1762 if (SvPOK (fh_or_path))
1763 {
1764 req->type = REQ_CHMOD;
1765 req->ptr1 = SvPVbyte_nolen (req->sv1);
1766 }
1767 else
1768 {
1769 req->type = REQ_FCHMOD;
1770 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771 }
1772 1746
1773 REQ_SEND; 1747 REQ_SEND;
1774} 1748}
1775 1749
1776void 1750void
1777aio_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)
1778 PPCODE: 1752 PPCODE:
1779{ 1753{
1780 dREQ; 1754 dREQ;
1781 1755
1782 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1756 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1757 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784 req->sv1 = newSVsv (fh_or_path); 1758 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1785
1786 if (SvPOK (fh_or_path))
1787 {
1788 req->type = REQ_CHOWN;
1789 req->ptr1 = SvPVbyte_nolen (req->sv1);
1790 }
1791 else
1792 {
1793 req->type = REQ_FCHOWN;
1794 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795 }
1796 1759
1797 REQ_SEND; 1760 REQ_SEND;
1798} 1761}
1799 1762
1800void 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
1801aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1794aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1802 ALIAS: 1795 ALIAS:
1803 aio_unlink = REQ_UNLINK 1796 aio_unlink = EIO_UNLINK
1804 aio_rmdir = REQ_RMDIR 1797 aio_rmdir = EIO_RMDIR
1805 aio_readdir = REQ_READDIR 1798 aio_readdir = EIO_READDIR
1806 PPCODE: 1799 PPCODE:
1807{ 1800{
1808 dREQ; 1801 dREQ;
1809 1802
1810 req->type = ix; 1803 req->type = ix;
1811 req->sv1 = newSVsv (pathname); 1804 req_set_path1 (req, pathname);
1812 req->ptr1 = SvPVbyte_nolen (req->sv1);
1813 1805
1814 REQ_SEND; 1806 REQ_SEND;
1815} 1807}
1816 1808
1817void 1809void
1818aio_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
1819 PPCODE: 1815 PPCODE:
1820{ 1816{
1821 dREQ; 1817 eio_wd wd2 = 0;
1822
1823 req->type = REQ_MKDIR;
1824 req->sv1 = newSVsv (pathname);
1825 req->ptr1 = SvPVbyte_nolen (req->sv1);
1826 req->mode = mode;
1827
1828 REQ_SEND;
1829}
1830
1831void
1832aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833 ALIAS:
1834 aio_link = REQ_LINK
1835 aio_symlink = REQ_SYMLINK
1836 aio_rename = REQ_RENAME
1837 PPCODE:
1838{
1839 dREQ; 1818 dREQ;
1840 1819
1841 req->type = ix; 1820 req->type = ix;
1842 req->sv2 = newSVsv (oldpath); 1821 req_set_path1 (req, oldpath);
1843 req->ptr2 = SvPVbyte_nolen (req->sv2); 1822 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1844 req->sv1 = newSVsv (newpath); 1823 req->int3 = (long)wd2;
1845 req->ptr1 = SvPVbyte_nolen (req->sv1);
1846 1824
1847 REQ_SEND; 1825 REQ_SEND;
1848} 1826}
1849 1827
1850void 1828void
1851aio_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)
1852 PPCODE: 1830 PPCODE:
1853{ 1831{
1832 eio_wd wd2 = 0;
1854 dREQ; 1833 dREQ;
1855 1834
1856 req->type = REQ_MKNOD; 1835 req->type = EIO_RENAME;
1857 req->sv1 = newSVsv (pathname); 1836 req_set_path1 (req, oldpath);
1858 req->ptr1 = SvPVbyte_nolen (req->sv1); 1837 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1859 req->mode = (mode_t)mode; 1838 req->int2 = flags;
1860 req->offs = dev; 1839 req->int3 = (long)wd2;
1861 1840
1862 REQ_SEND; 1841 REQ_SEND;
1863} 1842}
1864 1843
1865void 1844void
1866aio_busy (double delay, SV *callback=&PL_sv_undef) 1845aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1867 PPCODE: 1846 PPCODE:
1868{ 1847{
1869 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}
1870 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
1871 req->type = REQ_BUSY; 2002 req->type = EIO_BUSY;
1872 req->nv1 = delay < 0. ? 0. : delay; 2003 req->nv1 = delay < 0. ? 0. : delay;
1873 2004
1874 REQ_SEND; 2005 REQ_SEND;
1875} 2006}
1876 2007
1877void 2008void
1878aio_group (SV *callback=&PL_sv_undef) 2009aio_group (SV *callback = &PL_sv_undef)
1879 PROTOTYPE: ;$
1880 PPCODE: 2010 PPCODE:
1881{ 2011{
1882 dREQ; 2012 dREQ;
1883 2013
1884 req->type = REQ_GROUP; 2014 req->type = EIO_GROUP;
1885 2015
2016 PUTBACK;
1886 req_send (req); 2017 req_submit (req);
2018 SPAGAIN;
2019
1887 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2020 XPUSHs (req_sv (req, aio_grp_stash));
1888} 2021}
1889 2022
1890void 2023void
1891aio_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
1892 PPCODE: 2028 PPCODE:
1893{ 2029{
1894 dREQ; 2030 dREQ;
1895 2031
1896 req->type = REQ_NOP; 2032 req->type = ix;
1897 2033
1898 REQ_SEND; 2034 REQ_SEND;
1899} 2035}
1900 2036
1901int 2037int
1902aioreq_pri (int pri = 0) 2038aioreq_pri (int pri = NO_INIT)
1903 PROTOTYPE: ;$
1904 CODE: 2039 CODE:
1905 RETVAL = next_pri - PRI_BIAS; 2040 RETVAL = next_pri;
1906 if (items > 0) 2041 if (items > 0)
1907 { 2042 {
1908 if (pri < PRI_MIN) pri = PRI_MIN; 2043 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1909 if (pri > PRI_MAX) pri = PRI_MAX; 2044 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1910 next_pri = pri + PRI_BIAS; 2045 next_pri = pri;
1911 } 2046 }
1912 OUTPUT: 2047 OUTPUT:
1913 RETVAL 2048 RETVAL
1914 2049
1915void 2050void
1916aioreq_nice (int nice = 0) 2051aioreq_nice (int nice = 0)
1917 CODE: 2052 CODE:
1918 nice = next_pri - nice; 2053 nice = next_pri - nice;
1919 if (nice < PRI_MIN) nice = PRI_MIN; 2054 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1920 if (nice > PRI_MAX) nice = PRI_MAX; 2055 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1921 next_pri = nice + PRI_BIAS; 2056 next_pri = nice;
1922 2057
1923void 2058void
1924flush () 2059flush ()
1925 PROTOTYPE:
1926 CODE: 2060 CODE:
1927 while (nreqs) 2061 while (eio_nreqs ())
1928 { 2062 {
1929 poll_wait (); 2063 poll_wait ();
1930 poll_cb (); 2064 poll_cb ();
1931 } 2065 }
1932 2066
1933int 2067int
1934poll() 2068poll ()
1935 PROTOTYPE:
1936 CODE: 2069 CODE:
1937 poll_wait (); 2070 poll_wait ();
1938 RETVAL = poll_cb (); 2071 RETVAL = poll_cb ();
1939 OUTPUT: 2072 OUTPUT:
1940 RETVAL 2073 RETVAL
1941 2074
1942int 2075int
1943poll_fileno() 2076poll_fileno ()
1944 PROTOTYPE:
1945 CODE: 2077 CODE:
1946 RETVAL = respipe [0]; 2078 RETVAL = s_epipe_fd (&respipe);
1947 OUTPUT: 2079 OUTPUT:
1948 RETVAL 2080 RETVAL
1949 2081
1950int 2082int
1951poll_cb(...) 2083poll_cb (...)
1952 PROTOTYPE: 2084 PROTOTYPE:
1953 CODE: 2085 CODE:
1954 RETVAL = poll_cb (); 2086 RETVAL = poll_cb ();
1955 OUTPUT: 2087 OUTPUT:
1956 RETVAL 2088 RETVAL
1957 2089
1958void 2090void
1959poll_wait() 2091poll_wait ()
1960 PROTOTYPE:
1961 CODE: 2092 CODE:
1962 poll_wait (); 2093 poll_wait ();
1963 2094
1964void
1965setsig (int signum = SIGIO)
1966 PROTOTYPE: ;$
1967 CODE:
1968{
1969 if (block_sig_level)
1970 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1971
1972 X_LOCK (reslock);
1973 main_tid = pthread_self ();
1974 main_sig = signum;
1975 X_UNLOCK (reslock);
1976
1977 if (main_sig && npending)
1978 pthread_kill (main_tid, main_sig);
1979}
1980
1981void
1982aio_block (SV *cb)
1983 PROTOTYPE: &
1984 PPCODE:
1985{
1986 int count;
1987
1988 block_sig ();
1989 PUSHMARK (SP);
1990 PUTBACK;
1991 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1992 SPAGAIN;
1993 unblock_sig ();
1994
1995 if (SvTRUE (ERRSV))
1996 croak (0);
1997
1998 XSRETURN (count);
1999}
2000
2001int 2095int
2002nreqs() 2096nreqs ()
2003 PROTOTYPE:
2004 CODE: 2097 CODE:
2005 RETVAL = nreqs; 2098 RETVAL = eio_nreqs ();
2006 OUTPUT: 2099 OUTPUT:
2007 RETVAL 2100 RETVAL
2008 2101
2009int 2102int
2010nready() 2103nready ()
2011 PROTOTYPE:
2012 CODE: 2104 CODE:
2013 RETVAL = get_nready (); 2105 RETVAL = eio_nready ();
2014 OUTPUT: 2106 OUTPUT:
2015 RETVAL 2107 RETVAL
2016 2108
2017int 2109int
2018npending() 2110npending ()
2019 PROTOTYPE:
2020 CODE: 2111 CODE:
2021 RETVAL = get_npending (); 2112 RETVAL = eio_npending ();
2022 OUTPUT: 2113 OUTPUT:
2023 RETVAL 2114 RETVAL
2024 2115
2025int 2116int
2026nthreads() 2117nthreads ()
2027 PROTOTYPE:
2028 CODE: 2118 CODE:
2029 if (WORDACCESS_UNSAFE) X_LOCK (wrklock); 2119 RETVAL = eio_nthreads ();
2030 RETVAL = started;
2031 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2032 OUTPUT: 2120 OUTPUT:
2033 RETVAL 2121 RETVAL
2034 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
2250munlockall ()
2251 CODE:
2252#if _POSIX_MEMLOCK
2253 munlockall ();
2254#else
2255 RETVAL = EIO_ENOSYS ();
2256#endif
2257 OUTPUT:
2258 RETVAL
2259
2260int
2261splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2262 CODE:
2263{
2264#if HAVE_LINUX_SPLICE
2265 loff_t off_in_, off_out_;
2266 RETVAL = splice (
2267 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2268 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2269 length, flags
2270 );
2271#else
2272 RETVAL = EIO_ENOSYS ();
2273#endif
2274}
2275 OUTPUT:
2276 RETVAL
2277
2278int
2279tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2280 CODE:
2281#if HAVE_LINUX_SPLICE
2282 RETVAL = tee (rfh, wfh, length, flags);
2283#else
2284 RETVAL = EIO_ENOSYS ();
2285#endif
2286 OUTPUT:
2287 RETVAL
2288
2289int
2290pipesize (aio_rfd rfh, int new_size = -1)
2291 PROTOTYPE: $;$
2292 CODE:
2293#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2294 if (new_size >= 0)
2295 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2296 else
2297 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2298#else
2299 errno = ENOSYS;
2300 RETVAL = -1;
2301#endif
2302 OUTPUT:
2303 RETVAL
2304
2305void
2306pipe2 (int flags = 0)
2307 PROTOTYPE: ;$
2308 PPCODE:
2309{
2310 int fd[2];
2311 int res;
2312
2313 if (flags)
2314#if HAVE_PIPE2
2315 res = pipe2 (fd, flags);
2316#else
2317 res = (errno = ENOSYS, -1);
2318#endif
2319 else
2320 res = pipe (fd);
2321
2322 if (!res)
2323 {
2324 EXTEND (SP, 2);
2325 PUSHs (newmortalFH (fd[0], O_RDONLY));
2326 PUSHs (newmortalFH (fd[1], O_WRONLY));
2327 }
2328}
2329
2330void
2331eventfd (unsigned int initval = 0, int flags = 0)
2332 PPCODE:
2333{
2334 int fd;
2335#if HAVE_EVENTFD
2336 fd = eventfd (initval, flags);
2337#else
2338 fd = (errno = ENOSYS, -1);
2339#endif
2340
2341 XPUSHs (newmortalFH (fd, O_RDWR));
2342}
2343
2344void
2345timerfd_create (int clockid, int flags = 0)
2346 PPCODE:
2347{
2348 int fd;
2349#if HAVE_TIMERFD
2350 fd = timerfd_create (clockid, flags);
2351#else
2352 fd = (errno = ENOSYS, -1);
2353#endif
2354
2355 XPUSHs (newmortalFH (fd, O_RDWR));
2356}
2357
2358void
2359timerfd_settime (SV *fh, int flags, NV interval, NV value)
2360 PPCODE:
2361{
2362 int fd = s_fileno_croak (fh, 0);
2363#if HAVE_TIMERFD
2364 int res;
2365 struct itimerspec its, ots;
2366
2367 ts_set (&its.it_interval, interval);
2368 ts_set (&its.it_value , value);
2369 res = timerfd_settime (fd, flags, &its, &ots);
2370
2371 if (!res)
2372 {
2373 EXTEND (SP, 2);
2374 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2375 PUSHs (newSVnv (ts_get (&ots.it_value)));
2376 }
2377#else
2378 errno = ENOSYS;
2379#endif
2380}
2381
2382void
2383timerfd_gettime (SV *fh)
2384 PPCODE:
2385{
2386 int fd = s_fileno_croak (fh, 0);
2387#if HAVE_TIMERFD
2388 int res;
2389 struct itimerspec ots;
2390 res = timerfd_gettime (fd, &ots);
2391
2392 if (!res)
2393 {
2394 EXTEND (SP, 2);
2395 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2396 PUSHs (newSVnv (ts_get (&ots.it_value)));
2397 }
2398#else
2399 errno = ENOSYS;
2400#endif
2401}
2402
2403UV
2404get_fdlimit ()
2405 CODE:
2406#if HAVE_RLIMITS
2407 struct rlimit rl;
2408 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2409 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2410#endif
2411 XSRETURN_UNDEF;
2412 OUTPUT:
2413 RETVAL
2414
2415void
2416min_fdlimit (UV limit = 0x7fffffffU)
2417 CODE:
2418{
2419#if HAVE_RLIMITS
2420 struct rlimit rl;
2421 rlim_t orig_rlim_max;
2422 UV bit;
2423
2424 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2425 goto fail;
2426
2427 if (rl.rlim_cur == RLIM_INFINITY)
2428 XSRETURN_YES;
2429
2430 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2431
2432 if (rl.rlim_cur < limit)
2433 {
2434 rl.rlim_cur = limit;
2435
2436 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2437 rl.rlim_max = rl.rlim_cur;
2438 }
2439
2440 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2441 XSRETURN_YES;
2442
2443 if (errno == EPERM)
2444 {
2445 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2446 /* our limit overflows a system-wide limit */
2447 /* try an adaptive algorithm, but do not lower the hardlimit */
2448 rl.rlim_max = 0;
2449 for (bit = 0x40000000U; bit; bit >>= 1)
2450 {
2451 rl.rlim_max |= bit;
2452 rl.rlim_cur = rl.rlim_max;
2453
2454 /* nevr decrease the hard limit */
2455 if (rl.rlim_max < orig_rlim_max)
2456 break;
2457
2458 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2459 rl.rlim_max &= ~bit; /* too high, remove bit again */
2460 }
2461
2462 /* now, raise the soft limit to the max permitted */
2463 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2464 {
2465 rl.rlim_cur = rl.rlim_max;
2466 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2467 errno = EPERM;
2468 }
2469 }
2470#endif
2471 fail:
2472 XSRETURN_UNDEF;
2473}
2474
2475void _on_next_submit (SV *cb)
2476 CODE:
2477 SvREFCNT_dec (on_next_submit);
2478 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2479
2035PROTOTYPES: DISABLE 2480PROTOTYPES: DISABLE
2481
2482MODULE = IO::AIO PACKAGE = IO::AIO::WD
2483
2484BOOT:
2485{
2486 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2487 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2488}
2489
2490void
2491DESTROY (SV *self)
2492 CODE:
2493{
2494 aio_wd wd = SvAIO_WD (self);
2495#if HAVE_AT
2496 {
2497 SV *callback = &PL_sv_undef;
2498 dREQ; /* clobbers next_pri :/ */
2499 next_pri = req->pri; /* restore next_pri */
2500 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2501 req->type = EIO_WD_CLOSE;
2502 req->wd = wd;
2503 REQ_SEND;
2504 }
2505#else
2506 eio_wd_close_sync (wd);
2507#endif
2508}
2036 2509
2037MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2510MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2038 2511
2039void 2512void
2040cancel (aio_req_ornot req) 2513cancel (aio_req_ornot req)
2041 CODE: 2514 CODE:
2042 req_cancel (req); 2515 eio_cancel (req);
2043 2516
2044void 2517void
2045cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2518cb (aio_req_ornot req, SV *callback = NO_INIT)
2046 CODE: 2519 PPCODE:
2520{
2521 if (GIMME_V != G_VOID)
2522 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2523
2524 if (items > 1)
2525 {
2526 SV *cb_cv = get_cb (callback);
2527
2047 SvREFCNT_dec (req->callback); 2528 SvREFCNT_dec (req->callback);
2048 req->callback = newSVsv (callback); 2529 req->callback = SvREFCNT_inc (cb_cv);
2530 }
2531}
2049 2532
2050MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2533MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2051 2534
2052void 2535void
2053add (aio_req grp, ...) 2536add (aio_req grp, ...)
2054 PPCODE: 2537 PPCODE:
2055{ 2538{
2056 int i; 2539 int i;
2057 aio_req req;
2058
2059 if (main_sig && !block_sig_level)
2060 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2061 2540
2062 if (grp->int1 == 2) 2541 if (grp->int1 == 2)
2063 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2542 croak ("cannot add requests to IO::AIO::GRP after the group finished");
2064 2543
2065 for (i = 1; i < items; ++i ) 2544 for (i = 1; i < items; ++i )
2066 { 2545 {
2546 aio_req req;
2547
2067 if (GIMME_V != G_VOID) 2548 if (GIMME_V != G_VOID)
2068 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2549 XPUSHs (sv_2mortal (newSVsv (ST (i))));
2069 2550
2070 req = SvAIO_REQ (ST (i)); 2551 req = SvAIO_REQ (ST (i));
2071 2552
2072 if (req) 2553 if (req)
2073 { 2554 eio_grp_add (grp, req);
2074 ++grp->size;
2075 req->grp = grp;
2076
2077 req->grp_prev = 0;
2078 req->grp_next = grp->grp_first;
2079
2080 if (grp->grp_first)
2081 grp->grp_first->grp_prev = req;
2082
2083 grp->grp_first = req;
2084 }
2085 } 2555 }
2086} 2556}
2087 2557
2088void 2558void
2089cancel_subs (aio_req_ornot req) 2559cancel_subs (aio_req_ornot req)
… …
2098 AV *av; 2568 AV *av;
2099 2569
2100 grp->errorno = errno; 2570 grp->errorno = errno;
2101 2571
2102 av = newAV (); 2572 av = newAV ();
2573 av_extend (av, items - 1);
2103 2574
2104 for (i = 1; i < items; ++i ) 2575 for (i = 1; i < items; ++i )
2105 av_push (av, newSVsv (ST (i))); 2576 av_push (av, newSVsv (ST (i)));
2106 2577
2107 SvREFCNT_dec (grp->sv1); 2578 SvREFCNT_dec (grp->sv1);
… …
2114 grp->errorno = errorno; 2585 grp->errorno = errorno;
2115 2586
2116void 2587void
2117limit (aio_req grp, int limit) 2588limit (aio_req grp, int limit)
2118 CODE: 2589 CODE:
2119 grp->int2 = limit; 2590 eio_grp_limit (grp, limit);
2120 aio_grp_feed (grp);
2121 2591
2122void 2592void
2123feed (aio_req grp, SV *callback=&PL_sv_undef) 2593feed (aio_req grp, SV *callback = &PL_sv_undef)
2124 CODE: 2594 CODE:
2125{ 2595{
2126 SvREFCNT_dec (grp->sv2); 2596 SvREFCNT_dec (grp->sv2);
2127 grp->sv2 = newSVsv (callback); 2597 grp->sv2 = newSVsv (callback);
2598 grp->feed = aio_grp_feed;
2128 2599
2129 if (grp->int2 <= 0) 2600 if (grp->int2 <= 0)
2130 grp->int2 = 2; 2601 grp->int2 = 2;
2131 2602
2132 aio_grp_feed (grp); 2603 eio_grp_limit (grp, grp->int2);
2133} 2604}
2134 2605

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