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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.267 by root, Sat Aug 25 19:25:32 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 8
9#include "autoconf/config.h" 9#if !defined mg_findext
10# define mg_findext(sv,type,vtbl) mg_find (sv, type)
11#endif
10 12
11#include <stddef.h> 13#include <stddef.h>
12#include <stdlib.h> 14#include <stdlib.h>
13#include <errno.h> 15#include <errno.h>
14#include <sys/time.h>
15#include <sys/select.h>
16#include <sys/types.h> 16#include <sys/types.h>
17#include <sys/socket.h>
17#include <sys/stat.h> 18#include <sys/stat.h>
18#include <limits.h> 19#include <limits.h>
19#include <unistd.h>
20#include <fcntl.h> 20#include <fcntl.h>
21#include <signal.h>
22#include <sched.h> 21#include <sched.h>
22
23#if HAVE_SYS_MKDEV_H
24# include <sys/mkdev.h>
25#elif HAVE_SYS_SYSMACROS_H
26# include <sys/sysmacros.h>
27#endif
28
29#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30# include <sys/mman.h>
31#endif
32
33/* the incompetent fool that created musl keeps __linux__, refuses
34 * to implement any linux standard apis, and also has no way to test
35 * for his broken iplementation. don't complain to me if this fails
36 * for you.
37 */
38#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
39# include <linux/fs.h>
40# ifdef FS_IOC_FIEMAP
41# include <linux/types.h>
42# include <linux/fiemap.h>
43# define HAVE_FIEMAP 1
44# endif
45#endif
46
47/* perl namespace pollution */
48#undef VERSION
49
50/* perl stupidly overrides readdir and maybe others */
51/* with thread-unsafe versions, imagine that :( */
52#undef readdir
53#undef opendir
54#undef closedir
55
56#ifdef _WIN32
57
58 // perl overrides all those nice libc functions
59
60 #undef malloc
61 #undef free
62 #undef open
63 #undef read
64 #undef write
65 #undef send
66 #undef recv
67 #undef stat
68 #undef lstat
69 #undef fstat
70 #undef truncate
71 #undef ftruncate
72 #undef open
73 #undef link
74 #undef close
75 #undef unlink
76 #undef mkdir
77 #undef rmdir
78 #undef rename
79 #undef lseek
80 #undef opendir
81 #undef readdir
82 #undef closedir
83 #undef chmod
84 #undef fchmod
85 #undef dup
86 #undef dup2
87 #undef abort
88 #undef pipe
89 #undef utime
90
91 #define EIO_STRUCT_STAT struct _stati64
92 #define EIO_STRUCT_STATI64
93
94#else
95
96 #include <sys/time.h>
97 #include <sys/select.h>
98 #include <unistd.h>
23#include <utime.h> 99 #include <utime.h>
100 #include <signal.h>
24 101
102 #define EIO_STRUCT_STAT Stat_t
103
104#endif
105
106/*****************************************************************************/
107
108#if __GNUC__ >= 3
109# define expect(expr,value) __builtin_expect ((expr),(value))
110#else
111# define expect(expr,value) (expr)
112#endif
113
114#define expect_false(expr) expect ((expr) != 0, 0)
115#define expect_true(expr) expect ((expr) != 0, 1)
116
117/*****************************************************************************/
118
119#include "config.h"
120
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
25#if HAVE_SENDFILE 146#if HAVE_ST_GEN
26# if __linux 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
27# include <sys/sendfile.h> 155# include <sys/eventfd.h>
28# elif __freebsd 156#endif
29# include <sys/socket.h> 157
158#if HAVE_TIMERFD
30# include <sys/uio.h> 159# include <sys/timerfd.h>
31# elif __hpux 160#endif
161
162#if HAVE_RLIMITS
163 #include <sys/time.h>
32# include <sys/socket.h> 164 #include <sys/resource.h>
33# elif __solaris /* not yet */ 165#endif
34# include <sys/sendfile.h> 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
35# else 202# else
36# error sendfile support requested but not available 203# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37# endif 204# endif
38#endif 205#endif
39 206
40/* number of seconds after which idle threads exit */ 207#ifndef makedev
41#define IDLE_TIMEOUT 10 208# define makedev(maj,min) (((maj) << 8) | (min))
42
43/* used for struct dirent, AIX doesn't provide it */
44#ifndef NAME_MAX
45# define NAME_MAX 4096
46#endif 209#endif
47 210#ifndef major
48/* buffer size for various temporary buffers */ 211# define major(dev) ((dev) >> 8)
49#define AIO_BUFSIZE 65536
50
51/* use NV for 32 bit perls as it allows larger offsets */
52#if IVSIZE >= 8
53# define SvVAL64 SvIV
54#else
55# define SvVAL64 SvNV
56#endif 212#endif
213#ifndef minor
214# define minor(dev) ((dev) & 0xff)
215#endif
57 216
58#define dBUF \ 217/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
59 char *aio_buf; \ 218#ifdef __sun
60 LOCK (wrklock); \ 219# undef PAGESIZE
61 self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ 220#endif
62 UNLOCK (wrklock); \ 221
63 if (!aio_buf) \ 222#if PAGESIZE <= 0
223# define PAGESIZE sysconf (_SC_PAGESIZE)
224#endif
225
226/*****************************************************************************/
227
228#if !_POSIX_MAPPED_FILES
229# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
230# define munmap(addr,length) EIO_ENOSYS ()
231#endif
232
233#if !_POSIX_MEMORY_PROTECTION
234# define mprotect(addr,len,prot) EIO_ENOSYS ()
235#endif
236
237#if !MREMAP_MAYMOVE
238# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
239#endif
240
241#define FOREIGN_MAGIC PERL_MAGIC_ext
242
243static int ecb_cold
244mmap_free (pTHX_ SV *sv, MAGIC *mg)
245{
246 int old_errno = errno;
247 munmap (mg->mg_ptr, (size_t)mg->mg_obj);
248 errno = old_errno;
249
250 mg->mg_obj = 0; /* just in case */
251
252 SvREADONLY_off (sv);
253
254 if (SvPVX (sv) != mg->mg_ptr)
255 croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
256
257 SvCUR_set (sv, 0);
258 SvPVX (sv) = 0;
259 SvOK_off (sv);
260
64 return -1; 261 return 0;
262}
65 263
66typedef SV SV8; /* byte-sv, used for argument-checking */ 264static MGVTBL mmap_vtbl = {
67 265 0, 0, 0, 0, mmap_free
68enum {
69 REQ_QUIT,
70 REQ_OPEN, REQ_CLOSE,
71 REQ_READ, REQ_WRITE,
72 REQ_READAHEAD, REQ_SENDFILE,
73 REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74 REQ_UTIME, REQ_FUTIME,
75 REQ_CHMOD, REQ_FCHMOD,
76 REQ_CHOWN, REQ_FCHOWN,
77 REQ_FSYNC, REQ_FDATASYNC,
78 REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79 REQ_MKNOD, REQ_READDIR,
80 REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81 REQ_GROUP, REQ_NOP,
82 REQ_BUSY,
83}; 266};
84 267
85#define AIO_REQ_KLASS "IO::AIO::REQ" 268static int ecb_cold
86#define AIO_GRP_KLASS "IO::AIO::GRP" 269sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88typedef struct aio_cb
89{ 270{
90 struct aio_cb *volatile next; 271 free (mg->mg_ptr);
272 mg->mg_obj = 0; /* just in case */
91 273
92 SV *callback; 274 SvREADONLY_off (sv);
93 SV *sv1, *sv2;
94 void *ptr1, *ptr2;
95 off_t offs;
96 size_t size;
97 ssize_t result;
98 double nv1, nv2;
99 275
100 STRLEN stroffset; 276 if (SvPVX (sv) != mg->mg_ptr)
101 int type; 277 croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102 int int1, int2, int3;
103 int errorno;
104 mode_t mode; /* open */
105 278
106 unsigned char flags; 279 SvCUR_set (sv, 0);
107 unsigned char pri; 280 SvPVX (sv) = 0;
281 SvOK_off (sv);
108 282
109 SV *self; /* the perl counterpart of this request, if any */ 283 return 0;
110 struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; 284}
111} aio_cb;
112 285
113enum { 286static MGVTBL sysfree_vtbl = {
114 FLAG_CANCELLED = 0x01, /* request was cancelled */ 287 0, 0, 0, 0, sysfree_free
115 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116 FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117}; 288};
118 289
119typedef aio_cb *aio_req; 290/*****************************************************************************/
120typedef aio_cb *aio_req_ornot;
121 291
122enum { 292/* helper: set scalar to foreign ptr with custom free */
123 PRI_MIN = -4, 293static void
124 PRI_MAX = 4, 294sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
125
126 DEFAULT_PRI = 0,
127 PRI_BIAS = -PRI_MIN,
128 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129};
130
131#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133static unsigned int max_poll_time = 0;
134static unsigned int max_poll_reqs = 0;
135
136/* calculcate time difference in ~1/AIO_TICKS of a second */
137static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138{ 295{
139 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS 296 sv_force_normal (sv);
140 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
141}
142 297
143static thread_t main_tid; 298 /* we store the length in mg_obj, as namlen is I32 :/ */
144static int main_sig; 299 sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
145static int block_sig_level; 300 ->mg_obj = (SV *)length;
146 301
147void block_sig () 302 SvUPGRADE (sv, SVt_PV); /* nop... */
148{
149 sigset_t ss;
150 303
151 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)
152 return; 350 return;
153 351
154 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)
155 return; 360 return;
156 361
157 sigemptyset (&ss); 362 if (req->int3 >= 0 /* not autosizing */
158 sigaddset (&ss, main_sig); 363 || !fiemap->fm_mapped_extents /* no more extents */
159 pthread_sigmask (SIG_BLOCK, &ss, 0); 364 || fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160} 365 goto done;
161 366
162void unblock_sig () 367 /* else we have to loop -
163{ 368 * it would be tempting (actually I tried that first) to just query the
164 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 */
165 373
166 if (--block_sig_level) 374 end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167 return;
168 375
169 if (!main_sig) 376 for (;;)
170 return;
171
172 sigemptyset (&ss);
173 sigaddset (&ss, main_sig);
174 pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175}
176
177static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179static unsigned int started, idle, wanted;
180
181/* worker threads management */
182static mutex_t wrklock = MUTEX_INIT;
183
184typedef struct worker {
185 /* locked by wrklock */
186 struct worker *prev, *next;
187
188 thread_t tid;
189
190 /* locked by reslock, reqlock or wrklock */
191 aio_req req; /* currently processed request */
192 void *dbuf;
193 DIR *dirp;
194} worker;
195
196static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198static void worker_clear (worker *wrk)
199{
200 if (wrk->dirp)
201 { 377 {
202 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) */
203 wrk->dirp = 0; 379 char scratch[3072];
204 } 380 struct fiemap *incmap = (struct fiemap *)scratch;
205 381
206 if (wrk->dbuf) 382 incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207 { 383 + fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208 free (wrk->dbuf); 384 incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209 wrk->dbuf = 0; 385 incmap->fm_flags = fiemap->fm_flags;
210 } 386 incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211}
212 387
213static void worker_free (worker *wrk) 388 if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
214{
215 wrk->next->prev = wrk->prev;
216 wrk->prev->next = wrk->next;
217
218 free (wrk);
219}
220
221static volatile unsigned int nreqs, nready, npending;
222static volatile unsigned int max_idle = 4;
223static volatile unsigned int max_outstanding = 0xffffffff;
224static int respipe [2];
225
226static mutex_t reslock = MUTEX_INIT;
227static mutex_t reqlock = MUTEX_INIT;
228static cond_t reqwait = COND_INIT;
229
230#if WORDACCESS_UNSAFE
231
232static unsigned int get_nready ()
233{
234 unsigned int retval;
235
236 LOCK (reqlock);
237 retval = nready;
238 UNLOCK (reqlock);
239
240 return retval;
241}
242
243static unsigned int get_npending ()
244{
245 unsigned int retval;
246
247 LOCK (reslock);
248 retval = npending;
249 UNLOCK (reslock);
250
251 return retval;
252}
253
254static unsigned int get_nthreads ()
255{
256 unsigned int retval;
257
258 LOCK (wrklock);
259 retval = started;
260 UNLOCK (wrklock);
261
262 return retval;
263}
264
265#else
266
267# define get_nready() nready
268# define get_npending() npending
269# define get_nthreads() started
270
271#endif
272
273/*
274 * a somewhat faster data structure might be nice, but
275 * with 8 priorities this actually needs <20 insns
276 * per shift, the most expensive operation.
277 */
278typedef struct {
279 aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280 int size;
281} reqq;
282
283static reqq req_queue;
284static reqq res_queue;
285
286int reqq_push (reqq *q, aio_req req)
287{
288 int pri = req->pri;
289 req->next = 0;
290
291 if (q->qe[pri])
292 {
293 q->qe[pri]->next = req;
294 q->qe[pri] = req;
295 }
296 else
297 q->qe[pri] = q->qs[pri] = req;
298
299 return q->size++;
300}
301
302aio_req reqq_shift (reqq *q)
303{
304 int pri;
305
306 if (!q->size)
307 return 0; 389 return;
308 390
309 --q->size; 391 if (!incmap->fm_mapped_extents)
392 goto done;
310 393
311 for (pri = NUM_PRI; pri--; ) 394 count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312 { 395 fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313 aio_req req = q->qs[pri]; 396 errno = ENOMEM;
314
315 if (req) 397 if (!fiemap)
398 return;
399
400 req->ptr1 = fiemap;
401
402 for (count = 0; count < incmap->fm_mapped_extents; ++count)
316 { 403 {
317 if (!(q->qs[pri] = req->next)) 404 struct fiemap_extent *e = incmap->fm_extents + count;
318 q->qe[pri] = 0;
319 405
320 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
321 } 414 }
322 } 415 }
323 416
324 abort (); 417done:
325} 418 req->result = 0;
326 419
327static int poll_cb (); 420#else
328static 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
329static void req_destroy (aio_req req); 443static void req_destroy (aio_req req);
330static void req_cancel (aio_req req); 444static void req_cancel (aio_req req);
331 445
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
332/* must be called at most once */ 460/* must be called at most once */
333static SV *req_sv (aio_req req, const char *klass) 461static SV *
462req_sv (aio_req req, HV *stash)
334{ 463{
335 if (!req->self) 464 if (!req->self)
336 { 465 {
337 req->self = (SV *)newHV (); 466 req->self = (SV *)newHV ();
338 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); 467 sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339 } 468 }
340 469
341 return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); 470 return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342} 471}
343 472
344static 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)
345{ 481{
346 MAGIC *mg; 482 MAGIC *mg;
347 483
348 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")))
349 croak ("object of class " AIO_REQ_KLASS " expected"); 489 croak ("object of class IO::AIO::REQ expected");
350 490
351 mg = mg_find (SvRV (sv), PERL_MAGIC_ext); 491 mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352 492
353 return mg ? (aio_req)mg->mg_ptr : 0; 493 return mg ? (aio_req)mg->mg_ptr : 0;
354} 494}
355 495
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
356static void aio_grp_feed (aio_req grp) 533aio_grp_feed (aio_req grp)
357{ 534{
358 block_sig (); 535 if (grp->sv2 && SvOK (grp->sv2))
359
360 while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361 { 536 {
362 int old_len = grp->size;
363
364 if (grp->sv2 && SvOK (grp->sv2))
365 {
366 dSP; 537 dSP;
367 538
368 ENTER; 539 ENTER;
369 SAVETMPS; 540 SAVETMPS;
370 PUSHMARK (SP); 541 PUSHMARK (SP);
371 XPUSHs (req_sv (grp, AIO_GRP_KLASS)); 542 XPUSHs (req_sv (grp, aio_grp_stash));
372 PUTBACK; 543 PUTBACK;
373 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR); 544 call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374 SPAGAIN; 545 SPAGAIN;
375 FREETMPS; 546 FREETMPS;
376 LEAVE; 547 LEAVE;
377 }
378
379 /* stop if no progress has been made */
380 if (old_len == grp->size)
381 {
382 SvREFCNT_dec (grp->sv2);
383 grp->sv2 = 0;
384 break;
385 }
386 } 548 }
387
388 unblock_sig ();
389} 549}
390 550
391static void aio_grp_dec (aio_req grp) 551static void
552req_submit (eio_req *req)
392{ 553{
393 --grp->size; 554 eio_submit (req);
394 555
395 /* call feeder, if applicable */ 556 if (expect_false (on_next_submit))
396 aio_grp_feed (grp);
397
398 /* finish, if done */
399 if (!grp->size && grp->int1)
400 { 557 {
401 block_sig (); 558 dSP;
559 SV *cb = sv_2mortal (on_next_submit);
402 560
403 if (!req_invoke (grp)) 561 on_next_submit = 0;
404 {
405 req_destroy (grp);
406 unblock_sig ();
407 croak (0);
408 }
409 562
410 req_destroy (grp); 563 PUSHMARK (SP);
411 unblock_sig (); 564 PUTBACK;
565 call_sv (cb, G_DISCARD | G_EVAL);
412 } 566 }
413} 567}
414 568
569static int
415static int req_invoke (aio_req req) 570req_invoke (eio_req *req)
416{ 571{
417 dSP;
418
419 if (req->flags & FLAG_SV2_RO_OFF) 572 if (req->flags & FLAG_SV2_RO_OFF)
420 SvREADONLY_off (req->sv2); 573 SvREADONLY_off (req->sv2);
421 574
422 if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) 575 if (!EIO_CANCELLED (req) && req->callback)
423 { 576 {
577 dSP;
578 static SV *sv_result_cache; /* caches the result integer SV */
579 SV *sv_result;
580
424 ENTER; 581 ENTER;
425 SAVETMPS; 582 SAVETMPS;
426 PUSHMARK (SP); 583 PUSHMARK (SP);
427 EXTEND (SP, 1); 584 EXTEND (SP, 1);
428 585
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
429 switch (req->type) 599 switch (req->type)
430 { 600 {
601 case EIO_WD_OPEN:
602 PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
603 break;
604
431 case REQ_READDIR: 605 case EIO_READDIR:
432 { 606 {
433 SV *rv = &PL_sv_undef; 607 SV *rv = &PL_sv_undef;
434 608
435 if (req->result >= 0) 609 if (req->result >= 0)
436 { 610 {
437 int i; 611 int i;
438 char *buf = req->ptr2; 612 char *names = (char *)req->ptr2;
613 eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439 AV *av = newAV (); 614 AV *av = newAV ();
440 615
441 av_extend (av, req->result - 1); 616 av_extend (av, req->result - 1);
442 617
443 for (i = 0; i < req->result; ++i) 618 for (i = 0; i < req->result; ++i)
444 { 619 {
445 SV *sv = newSVpv (buf, 0); 620 if (req->int1 & EIO_READDIR_DENTS)
621 {
622 SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446 623
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
447 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);
448 buf += SvCUR (sv) + 1; 652 names += SvCUR (name) + 1;
653 }
449 } 654 }
450 655
451 rv = sv_2mortal (newRV_noinc ((SV *)av)); 656 rv = sv_2mortal (newRV_noinc ((SV *)av));
452 } 657 }
453 658
454 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))));
455 } 663 }
456 break; 664 break;
457 665
458 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:
459 { 672 {
460 /* convert fd to fh */ 673 SV *rv = &PL_sv_undef;
461 SV *fh; 674
675#ifndef _WIN32
676 if (req->result >= 0)
677 {
678 EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
679 HV *hv = newHV ();
680 /* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
681 * chooses to make it a struct.
682 */
683 unsigned long fsid = 0;
684 memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
462 685
463 PUSHs (sv_2mortal (newSViv (req->result))); 686 rv = sv_2mortal (newRV_noinc ((SV *)hv));
464 PUTBACK;
465 call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466 SPAGAIN;
467 687
468 fh = POPs; 688 hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469 PUSHMARK (SP); 689 hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
690 hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
691 hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
692 hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
693 hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
694 hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
695 hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
696 hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
697 hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
698 hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
699 }
700#endif
701
470 XPUSHs (fh); 702 PUSHs (rv);
471 } 703 }
704
472 break; 705 break;
473 706
474 case REQ_GROUP: 707 case EIO_GROUP:
475 req->int1 = 2; /* mark group as finished */ 708 req->int1 = 2; /* mark group as finished */
476 709
477 if (req->sv1) 710 if (req->sv1)
478 { 711 {
479 int i; 712 int i;
… …
483 for (i = 0; i <= AvFILL (av); ++i) 716 for (i = 0; i <= AvFILL (av); ++i)
484 PUSHs (*av_fetch (av, i, 0)); 717 PUSHs (*av_fetch (av, i, 0));
485 } 718 }
486 break; 719 break;
487 720
488 case REQ_NOP: 721 case EIO_NOP:
489 case REQ_BUSY: 722 case EIO_BUSY:
490 break; 723 break;
491 724
492 case REQ_READLINK: 725 case EIO_READLINK:
726 case EIO_REALPATH:
493 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)
494 { 783 {
495 SvCUR_set (req->sv2, req->result); 784#if HAVE_FIEMAP
496 *SvEND (req->sv2) = 0;
497 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
498 } 816 }
817 else
818 PUSHs (sv_result);
499 break; 819 break;
500 820
501 case REQ_STAT: 821 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502 case REQ_LSTAT: 822 if (req->result > 0)
503 case REQ_FSTAT: 823 SvIV_set (sv_result, 0);
504 PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; 824 /* FALLTHROUGH */
505 PL_laststatval = req->result;
506 PL_statcache = *(Stat_t *)(req->ptr2);
507 PUSHs (sv_2mortal (newSViv (req->result)));
508 break;
509
510 case REQ_READ:
511 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512 *SvEND (req->sv2) = 0;
513 PUSHs (sv_2mortal (newSViv (req->result)));
514 break;
515 825
516 default: 826 default:
517 PUSHs (sv_2mortal (newSViv (req->result))); 827 PUSHs (sv_result);
518 break; 828 break;
519 } 829 }
520 830
521 errno = req->errorno; 831 errno = req->errorno;
522 832
523 PUTBACK; 833 PUTBACK;
524 call_sv (req->callback, G_VOID | G_EVAL); 834 call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525 SPAGAIN; 835 SPAGAIN;
836
837 if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
838 SvREFCNT_dec (sv_result);
839 else
840 sv_result_cache = sv_result;
526 841
527 FREETMPS; 842 FREETMPS;
528 LEAVE; 843 LEAVE;
844
845 PUTBACK;
529 } 846 }
530 847
531 if (req->grp)
532 {
533 aio_req grp = req->grp;
534
535 /* unlink request */
536 if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537 if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539 if (grp->grp_first == req)
540 grp->grp_first = req->grp_next;
541
542 aio_grp_dec (grp);
543 }
544
545 return !SvTRUE (ERRSV); 848 return !!SvTRUE (ERRSV);
546} 849}
547 850
851static void
548static void req_destroy (aio_req req) 852req_destroy (aio_req req)
549{ 853{
550 if (req->self) 854 if (req->self)
551 { 855 {
552 sv_unmagic (req->self, PERL_MAGIC_ext); 856 sv_unmagic (req->self, PERL_MAGIC_ext);
553 SvREFCNT_dec (req->self); 857 SvREFCNT_dec (req->self);
554 } 858 }
555 859
556 SvREFCNT_dec (req->sv1); 860 SvREFCNT_dec (req->sv1);
557 SvREFCNT_dec (req->sv2); 861 SvREFCNT_dec (req->sv2);
862 SvREFCNT_dec (req->sv3);
863 SvREFCNT_dec (req->sv4);
558 SvREFCNT_dec (req->callback); 864 SvREFCNT_dec (req->callback);
559 865
560 if (req->flags & FLAG_PTR2_FREE)
561 free (req->ptr2);
562
563 Safefree (req); 866 free (req);
564} 867}
565 868
869static void
566static void req_cancel_subs (aio_req grp) 870req_cancel_subs (aio_req grp)
567{ 871{
568 aio_req sub;
569
570 if (grp->type != REQ_GROUP) 872 if (grp->type != EIO_GROUP)
571 return; 873 return;
572 874
573 SvREFCNT_dec (grp->sv2); 875 SvREFCNT_dec (grp->sv2);
574 grp->sv2 = 0; 876 grp->sv2 = 0;
575 877
576 for (sub = grp->grp_first; sub; sub = sub->grp_next) 878 eio_grp_cancel (grp);
577 req_cancel (sub);
578} 879}
579 880
580static void req_cancel (aio_req req) 881static void ecb_cold
882create_respipe (void)
581{ 883{
582 req->flags |= FLAG_CANCELLED; 884 if (s_epipe_renew (&respipe))
583 885 croak ("IO::AIO: unable to initialize result pipe");
584 req_cancel_subs (req);
585} 886}
586 887
587static void *aio_proc (void *arg); 888static void
588 889poll_wait (void)
589static void start_thread (void)
590{ 890{
591 worker *wrk = calloc (1, sizeof (worker));
592
593 if (!wrk)
594 croak ("unable to allocate worker thread data");
595
596 LOCK (wrklock);
597
598 if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599 {
600 wrk->prev = &wrk_first;
601 wrk->next = wrk_first.next;
602 wrk_first.next->prev = wrk;
603 wrk_first.next = wrk;
604 ++started;
605 }
606 else
607 free (wrk);
608
609 UNLOCK (wrklock);
610}
611
612static void maybe_start_thread ()
613{
614 if (get_nthreads () >= wanted)
615 return;
616
617 /* todo: maybe use idle here, but might be less exact */
618 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619 return;
620
621 start_thread ();
622}
623
624static void req_send (aio_req req)
625{
626 block_sig ();
627
628 ++nreqs;
629
630 LOCK (reqlock);
631 ++nready;
632 reqq_push (&req_queue, req);
633 COND_SIGNAL (reqwait);
634 UNLOCK (reqlock);
635
636 unblock_sig ();
637
638 maybe_start_thread ();
639}
640
641static void end_thread (void)
642{
643 aio_req req;
644
645 Newz (0, req, 1, aio_cb);
646
647 req->type = REQ_QUIT;
648 req->pri = PRI_MAX + PRI_BIAS;
649
650 LOCK (reqlock);
651 reqq_push (&req_queue, req);
652 COND_SIGNAL (reqwait);
653 UNLOCK (reqlock);
654
655 LOCK (wrklock);
656 --started;
657 UNLOCK (wrklock);
658}
659
660static void set_max_idle (int nthreads)
661{
662 if (WORDACCESS_UNSAFE) LOCK (reqlock);
663 max_idle = nthreads <= 0 ? 1 : nthreads;
664 if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665}
666
667static void min_parallel (int nthreads)
668{
669 if (wanted < nthreads)
670 wanted = nthreads;
671}
672
673static void max_parallel (int nthreads)
674{
675 if (wanted > nthreads)
676 wanted = nthreads;
677
678 while (started > wanted)
679 end_thread ();
680}
681
682static void poll_wait ()
683{
684 fd_set rfd;
685
686 while (nreqs) 891 while (eio_nreqs ())
687 { 892 {
688 int size; 893 int size;
689 if (WORDACCESS_UNSAFE) LOCK (reslock); 894
895 X_LOCK (EIO_POOL->reslock);
690 size = res_queue.size; 896 size = EIO_POOL->res_queue.size;
691 if (WORDACCESS_UNSAFE) UNLOCK (reslock); 897 X_UNLOCK (EIO_POOL->reslock);
692 898
693 if (size) 899 if (size)
694 return; 900 return;
695 901
696 maybe_start_thread (); 902 etp_maybe_start_thread (EIO_POOL);
697 903
698 FD_ZERO(&rfd); 904 s_epipe_wait (&respipe);
699 FD_SET(respipe [0], &rfd);
700
701 select (respipe [0] + 1, &rfd, 0, 0, 0);
702 } 905 }
703} 906}
704 907
705static int poll_cb () 908static int
909poll_cb (void)
706{ 910{
707 dSP;
708 int count = 0;
709 int maxreqs = max_poll_reqs;
710 int do_croak = 0;
711 struct timeval tv_start, tv_now;
712 aio_req req;
713
714 if (max_poll_time)
715 gettimeofday (&tv_start, 0);
716
717 block_sig ();
718
719 for (;;) 911 for (;;)
720 { 912 {
721 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)
722 { 983 {
723 maybe_start_thread (); 984 path = AvARRAY (rv)[1];
985 wdob = AvARRAY (rv)[0];
724 986
725 LOCK (reslock); 987 if (SvOK (wdob))
726 req = reqq_shift (&res_queue);
727
728 if (req)
729 { 988 {
730 --npending; 989 *wd = SvAIO_WD (wdob);
731 990 *wdsv = SvREFCNT_inc_NN (SvRV (wdob));
732 if (!res_queue.size)
733 {
734 /* read any signals sent by the worker threads */
735 char buf [4];
736 while (read (respipe [0], buf, 4) == 4)
737 ;
738 }
739 }
740
741 UNLOCK (reslock);
742
743 if (!req)
744 break;
745
746 --nreqs;
747
748 if (req->type == REQ_GROUP && req->size)
749 {
750 req->int1 = 1; /* mark request as delayed */
751 continue;
752 } 991 }
753 else 992 else
754 { 993 *wd = EIO_INVALID_WD;
755 if (!req_invoke (req))
756 {
757 req_destroy (req);
758 unblock_sig ();
759 croak (0);
760 }
761
762 count++;
763 }
764
765 req_destroy (req);
766
767 if (maxreqs && !--maxreqs)
768 break;
769
770 if (max_poll_time)
771 {
772 gettimeofday (&tv_now, 0);
773
774 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775 break;
776 }
777 } 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 }
778 1005
779 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)));
780 break; 1029 break;
781 1030
782 poll_wait (); 1031 default:
783 1032 req->type = type_path;
784 ++maxreqs; 1033 req_set_path1 (req, fh_or_path);
1034 break;
785 } 1035 }
786
787 unblock_sig ();
788 return count;
789}
790
791static void create_pipe ()
792{
793 if (pipe (respipe))
794 croak ("unable to initialize result pipe");
795
796 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797 croak ("cannot set result pipe to nonblocking mode");
798
799 if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800 croak ("cannot set result pipe to nonblocking mode");
801} 1036}
802 1037
803/*****************************************************************************/ 1038/*****************************************************************************/
804/* work around various missing functions */
805 1039
806#if !HAVE_PREADWRITE 1040static void
807# define pread aio_pread 1041ts_set (struct timespec *ts, NV value)
808# define pwrite aio_pwrite
809
810/*
811 * make our pread/pwrite safe against themselves, but not against
812 * normal read/write by using a mutex. slows down execution a lot,
813 * but that's your problem, not mine.
814 */
815static mutex_t preadwritelock = MUTEX_INIT;
816
817static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818{ 1042{
819 ssize_t res; 1043 ts->tv_sec = value;
820 off_t ooffset; 1044 ts->tv_nsec = (value - ts->tv_sec) * 1e9;
821
822 LOCK (preadwritelock);
823 ooffset = lseek (fd, 0, SEEK_CUR);
824 lseek (fd, offset, SEEK_SET);
825 res = read (fd, buf, count);
826 lseek (fd, ooffset, SEEK_SET);
827 UNLOCK (preadwritelock);
828
829 return res;
830} 1045}
831 1046
832static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) 1047static NV
1048ts_get (const struct timespec *ts)
833{ 1049{
834 ssize_t res; 1050 return ts->tv_sec + ts->tv_nsec * 1e-9;
835 off_t ooffset;
836
837 LOCK (preadwritelock);
838 ooffset = lseek (fd, 0, SEEK_CUR);
839 lseek (fd, offset, SEEK_SET);
840 res = write (fd, buf, count);
841 lseek (fd, offset, SEEK_SET);
842 UNLOCK (preadwritelock);
843
844 return res;
845} 1051}
846#endif
847 1052
848#ifndef HAVE_FUTIMES 1053/*****************************************************************************/
849 1054
850# define utimes(path,times) aio_utimes (path, times) 1055XS(boot_IO__AIO) ecb_cold;
851# define futimes(fd,times) aio_futimes (fd, times)
852 1056
853int aio_utimes (const char *filename, const struct timeval times[2]) 1057MODULE = IO::AIO PACKAGE = IO::AIO
854{
855 if (times)
856 {
857 struct utimbuf buf;
858 1058
859 buf.actime = times[0].tv_sec; 1059PROTOTYPES: ENABLE
860 buf.modtime = times[1].tv_sec;
861 1060
862 return utime (filename, &buf); 1061BOOT:
863 }
864 else
865 return utime (filename, 0);
866}
867
868int aio_futimes (int fd, const struct timeval tv[2])
869{ 1062{
870 errno = ENOSYS; 1063 static const struct {
871 return -1; 1064 const char *name;
872} 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 },
873 1070
874#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)
875 1076
876#if !HAVE_FDATASYNC 1077 /* for lseek */
877# define fdatasync fsync 1078 const_iv (SEEK_DATA)
878#endif 1079 const_iv (SEEK_HOLE)
879 1080
880#if !HAVE_READAHEAD 1081 const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
881# 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)
882 1087
883static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) 1088 const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
884{ 1089 const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
885 dBUF; 1090 const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
1091 const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
1092 const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
886 1093
887 while (count > 0) 1094 /* the second block will be 0 when missing */
888 { 1095 const_iv (O_ACCMODE)
889 size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890 1096
891 pread (fd, aio_buf, len, offset); 1097 const_iv (O_RDONLY)
892 offset += len; 1098 const_iv (O_WRONLY)
893 count -= len; 1099 const_iv (O_RDWR)
894 } 1100 const_iv (O_CREAT)
1101 const_iv (O_TRUNC)
1102 const_iv (O_EXCL)
1103 const_iv (O_APPEND)
895 1104
896 errno = 0; 1105 const_iv (O_ASYNC)
897} 1106 const_iv (O_DIRECT)
1107 const_iv (O_NOATIME)
898 1108
899#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)
900 1122
901#if !HAVE_READDIR_R 1123 const_iv (S_IFIFO)
902# 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)
903 1132
904static mutex_t readdirlock = MUTEX_INIT; 1133 const_iv (ST_RDONLY)
905 1134 const_iv (ST_NOSUID)
906static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) 1135 const_iv (ST_NODEV)
907{ 1136 const_iv (ST_NOEXEC)
908 struct dirent *e; 1137 const_iv (ST_SYNCHRONOUS)
909 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)
910 1145
911 LOCK (readdirlock); 1146 const_iv (PROT_NONE)
1147 const_iv (PROT_EXEC)
1148 const_iv (PROT_READ)
1149 const_iv (PROT_WRITE)
912 1150
913 e = readdir (dirp); 1151 const_iv (MAP_PRIVATE)
914 errorno = errno; 1152 const_iv (MAP_SHARED)
1153 const_iv (MAP_FIXED)
1154 const_iv (MAP_ANONYMOUS)
915 1155
916 if (e) 1156 /* linuxish */
917 { 1157 const_iv (MAP_LOCKED)
918 *res = ent; 1158 const_iv (MAP_NORESERVE)
919 strcpy (ent->d_name, e->d_name); 1159 const_iv (MAP_POPULATE)
920 } 1160 const_iv (MAP_NONBLOCK)
921 else 1161 const_iv (MAP_GROWSDOWN)
922 *res = 0; 1162 const_iv (MAP_32BIT)
1163 const_iv (MAP_HUGETLB)
1164 const_iv (MAP_STACK)
923 1165
924 UNLOCK (readdirlock); 1166 const_iv (MREMAP_MAYMOVE)
1167 const_iv (MREMAP_FIXED)
925 1168
926 errno = errorno; 1169 const_iv (F_DUPFD_CLOEXEC)
927 return e ? 0 : -1;
928}
929#endif
930 1170
931/* sendfile always needs emulation */ 1171 const_iv (MSG_CMSG_CLOEXEC)
932static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) 1172 const_iv (SOCK_CLOEXEC)
933{
934 ssize_t res;
935 1173
936 if (!count) 1174 const_iv (F_OFD_GETLK)
937 return 0; 1175 const_iv (F_OFD_SETLK)
1176 const_iv (F_OFD_GETLKW)
938 1177
939#if HAVE_SENDFILE 1178 const_iv (FIFREEZE)
940# if __linux 1179 const_iv (FITHAW)
941 res = sendfile (ofd, ifd, &offset, count); 1180 const_iv (FITRIM)
1181 const_iv (FICLONE)
1182 const_iv (FICLONERANGE)
1183 const_iv (FIDEDUPERANGE)
942 1184
943# elif __freebsd 1185 const_iv (FS_IOC_GETFLAGS)
944 /* 1186 const_iv (FS_IOC_SETFLAGS)
945 * Of course, the freebsd sendfile is a dire hack with no thoughts 1187 const_iv (FS_IOC_GETVERSION)
946 * wasted on making it similar to other I/O functions. 1188 const_iv (FS_IOC_SETVERSION)
947 */ 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
1279 const_eio (MS_ASYNC)
1280 const_eio (MS_INVALIDATE)
1281 const_eio (MS_SYNC)
1282
1283 const_eio (MT_MODIFY)
1284
1285 const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
1286 const_eio (SYNC_FILE_RANGE_WRITE)
1287 const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
1288
1289 const_eio (FALLOC_FL_KEEP_SIZE)
1290 const_eio (FALLOC_FL_PUNCH_HOLE)
1291 const_eio (FALLOC_FL_COLLAPSE_RANGE)
1292 const_eio (FALLOC_FL_ZERO_RANGE)
1293 const_eio (FALLOC_FL_INSERT_RANGE)
1294 const_eio (FALLOC_FL_UNSHARE_RANGE)
1295
1296 const_eio (RENAME_NOREPLACE)
1297 const_eio (RENAME_EXCHANGE)
1298 const_eio (RENAME_WHITEOUT)
1299
1300 const_eio (READDIR_DENTS)
1301 const_eio (READDIR_DIRS_FIRST)
1302 const_eio (READDIR_STAT_ORDER)
1303 const_eio (READDIR_FOUND_UNKNOWN)
1304
1305 const_eio (DT_UNKNOWN)
1306 const_eio (DT_FIFO)
1307 const_eio (DT_CHR)
1308 const_eio (DT_DIR)
1309 const_eio (DT_BLK)
1310 const_eio (DT_REG)
1311 const_eio (DT_LNK)
1312 const_eio (DT_SOCK)
1313 const_eio (DT_WHT)
1314 };
1315
1316 aio_stash = gv_stashpv ("IO::AIO" , 1);
1317 aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1318 aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1319 aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1320
1321 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1322 newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1323
1324 newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1325
1326 /* allocate dummy pipe fd for aio_close */
948 { 1327 {
949 off_t sbytes; 1328 int pipefd [2];
950 res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951 1329
952 if (res < 0 && sbytes) 1330 if (
953 /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ 1331#ifdef _WIN32
954 res = sbytes; 1332 _pipe (pipefd, 1, _O_BINARY) < 0
1333#else
1334 pipe (pipefd) < 0
1335 || fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
1336#endif
1337 || close (pipefd [1]) < 0
1338 )
1339 croak ("IO::AIO: unable to create dummy pipe for aio_close");
1340
1341 close_fd = pipefd [0];
955 } 1342 }
956 1343
957# elif __hpux 1344 reinit ();
958 res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960# elif __solaris
961 {
962 struct sendfilevec vec;
963 size_t sbytes;
964
965 vec.sfv_fd = ifd;
966 vec.sfv_flag = 0;
967 vec.sfv_off = offset;
968 vec.sfv_len = count;
969
970 res = sendfilev (ofd, &vec, 1, &sbytes);
971
972 if (res < 0 && sbytes)
973 res = sbytes;
974 }
975
976# endif
977#else
978 res = -1;
979 errno = ENOSYS;
980#endif
981
982 if (res < 0
983 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984#if __solaris
985 || errno == EAFNOSUPPORT || errno == EPROTOTYPE
986#endif
987 )
988 )
989 {
990 /* emulate sendfile. this is a major pain in the ass */
991 dBUF;
992
993 res = 0;
994
995 while (count)
996 {
997 ssize_t cnt;
998
999 cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001 if (cnt <= 0)
1002 {
1003 if (cnt && !res) res = -1;
1004 break;
1005 }
1006
1007 cnt = write (ofd, aio_buf, cnt);
1008
1009 if (cnt <= 0)
1010 {
1011 if (cnt && !res) res = -1;
1012 break;
1013 }
1014
1015 offset += cnt;
1016 res += cnt;
1017 count -= cnt;
1018 }
1019 }
1020
1021 return res;
1022} 1345}
1023 1346
1024/* read a full directory */
1025static void scandir_ (aio_req req, worker *self)
1026{
1027 DIR *dirp;
1028 union
1029 {
1030 struct dirent d;
1031 char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032 } *u;
1033 struct dirent *entp;
1034 char *name, *names;
1035 int memlen = 4096;
1036 int memofs = 0;
1037 int res = 0;
1038 int errorno;
1039
1040 LOCK (wrklock);
1041 self->dirp = dirp = opendir (req->ptr1);
1042 self->dbuf = u = malloc (sizeof (*u));
1043 req->flags |= FLAG_PTR2_FREE;
1044 req->ptr2 = names = malloc (memlen);
1045 UNLOCK (wrklock);
1046
1047 if (dirp && u && names)
1048 for (;;)
1049 {
1050 errno = 0;
1051 readdir_r (dirp, &u->d, &entp);
1052
1053 if (!entp)
1054 break;
1055
1056 name = entp->d_name;
1057
1058 if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059 {
1060 int len = strlen (name) + 1;
1061
1062 res++;
1063
1064 while (memofs + len > memlen)
1065 {
1066 memlen *= 2;
1067 LOCK (wrklock);
1068 req->ptr2 = names = realloc (names, memlen);
1069 UNLOCK (wrklock);
1070
1071 if (!names)
1072 break;
1073 }
1074
1075 memcpy (names + memofs, name, len);
1076 memofs += len;
1077 }
1078 }
1079
1080 if (errno)
1081 res = -1;
1082
1083 req->result = res;
1084}
1085
1086/*****************************************************************************/
1087
1088static void *aio_proc (void *thr_arg)
1089{
1090 aio_req req;
1091 struct timespec ts;
1092 worker *self = (worker *)thr_arg;
1093
1094 /* try to distribute timeouts somewhat evenly */
1095 ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096 * (1000000000UL / 1024UL);
1097
1098 for (;;)
1099 {
1100 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102 LOCK (reqlock);
1103
1104 for (;;)
1105 {
1106 self->req = req = reqq_shift (&req_queue);
1107
1108 if (req)
1109 break;
1110
1111 ++idle;
1112
1113 if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114 == ETIMEDOUT)
1115 {
1116 if (idle > max_idle)
1117 {
1118 --idle;
1119 UNLOCK (reqlock);
1120 LOCK (wrklock);
1121 --started;
1122 UNLOCK (wrklock);
1123 goto quit;
1124 }
1125
1126 /* we are allowed to idle, so do so without any timeout */
1127 COND_WAIT (reqwait, reqlock);
1128 ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129 }
1130
1131 --idle;
1132 }
1133
1134 --nready;
1135
1136 UNLOCK (reqlock);
1137
1138 errno = 0; /* strictly unnecessary */
1139
1140 if (!(req->flags & FLAG_CANCELLED))
1141 switch (req->type)
1142 {
1143 case REQ_READ: req->result = req->offs >= 0
1144 ? pread (req->int1, req->ptr1, req->size, req->offs)
1145 : read (req->int1, req->ptr1, req->size); break;
1146 case REQ_WRITE: req->result = req->offs >= 0
1147 ? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148 : write (req->int1, req->ptr1, req->size); break;
1149
1150 case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151 case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153 case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154 case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155 case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157 case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158 case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159 case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160 case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162 case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163 case REQ_CLOSE: req->result = close (req->int1); break;
1164 case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165 case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166 case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167 case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168 case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169 case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170 case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171 case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173 case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174 case REQ_FSYNC: req->result = fsync (req->int1); break;
1175 case REQ_READDIR: scandir_ (req, self); break;
1176
1177 case REQ_BUSY:
1178 {
1179 struct timeval tv;
1180
1181 tv.tv_sec = req->nv1;
1182 tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184 req->result = select (0, 0, 0, 0, &tv);
1185 }
1186
1187 case REQ_UTIME:
1188 case REQ_FUTIME:
1189 {
1190 struct timeval tv[2];
1191 struct timeval *times;
1192
1193 if (req->nv1 != -1. || req->nv2 != -1.)
1194 {
1195 tv[0].tv_sec = req->nv1;
1196 tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197 tv[1].tv_sec = req->nv2;
1198 tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200 times = tv;
1201 }
1202 else
1203 times = 0;
1204
1205
1206 req->result = req->type == REQ_FUTIME
1207 ? futimes (req->int1, times)
1208 : utimes (req->ptr1, times);
1209 }
1210
1211 case REQ_GROUP:
1212 case REQ_NOP:
1213 break;
1214
1215 case REQ_QUIT:
1216 goto quit;
1217
1218 default:
1219 req->result = -1;
1220 break;
1221 }
1222
1223 req->errorno = errno;
1224
1225 LOCK (reslock);
1226
1227 ++npending;
1228
1229 if (!reqq_push (&res_queue, req))
1230 {
1231 /* write a dummy byte to the pipe so fh becomes ready */
1232 write (respipe [1], &respipe, 1);
1233
1234 /* optionally signal the main thread asynchronously */
1235 if (main_sig)
1236 pthread_kill (main_tid, main_sig);
1237 }
1238
1239 self->req = 0;
1240 worker_clear (self);
1241
1242 UNLOCK (reslock);
1243 }
1244
1245quit:
1246 LOCK (wrklock);
1247 worker_free (self);
1248 UNLOCK (wrklock);
1249
1250 return 0;
1251}
1252
1253/*****************************************************************************/
1254
1255static void atfork_prepare (void)
1256{
1257 LOCK (wrklock);
1258 LOCK (reqlock);
1259 LOCK (reslock);
1260#if !HAVE_PREADWRITE
1261 LOCK (preadwritelock);
1262#endif
1263#if !HAVE_READDIR_R
1264 LOCK (readdirlock);
1265#endif
1266}
1267
1268static void atfork_parent (void)
1269{
1270#if !HAVE_READDIR_R
1271 UNLOCK (readdirlock);
1272#endif
1273#if !HAVE_PREADWRITE
1274 UNLOCK (preadwritelock);
1275#endif
1276 UNLOCK (reslock);
1277 UNLOCK (reqlock);
1278 UNLOCK (wrklock);
1279}
1280
1281static void atfork_child (void)
1282{
1283 aio_req prv;
1284
1285 while (prv = reqq_shift (&req_queue))
1286 req_destroy (prv);
1287
1288 while (prv = reqq_shift (&res_queue))
1289 req_destroy (prv);
1290
1291 while (wrk_first.next != &wrk_first)
1292 {
1293 worker *wrk = wrk_first.next;
1294
1295 if (wrk->req)
1296 req_destroy (wrk->req);
1297
1298 worker_clear (wrk);
1299 worker_free (wrk);
1300 }
1301
1302 started = 0;
1303 idle = 0;
1304 nreqs = 0;
1305 nready = 0;
1306 npending = 0;
1307
1308 close (respipe [0]);
1309 close (respipe [1]);
1310 create_pipe ();
1311
1312 atfork_parent ();
1313}
1314
1315#define dREQ \
1316 aio_req req; \
1317 int req_pri = next_pri; \
1318 next_pri = DEFAULT_PRI + PRI_BIAS; \
1319 \
1320 if (SvOK (callback) && !SvROK (callback)) \
1321 croak ("callback must be undef or of reference type"); \
1322 \
1323 Newz (0, req, 1, aio_cb); \
1324 if (!req) \
1325 croak ("out of memory during aio_req allocation"); \
1326 \
1327 req->callback = newSVsv (callback); \
1328 req->pri = req_pri
1329
1330#define REQ_SEND \
1331 req_send (req); \
1332 \
1333 if (GIMME_V != G_VOID) \
1334 XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335
1336MODULE = IO::AIO PACKAGE = IO::AIO
1337
1338PROTOTYPES: ENABLE
1339
1340BOOT:
1341{
1342 HV *stash = gv_stashpv ("IO::AIO", 1);
1343
1344 newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1345 newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1346 newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347 newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348 newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349 newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350 newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351
1352 create_pipe ();
1353 ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354}
1355
1356void 1347void
1348reinit ()
1349 PROTOTYPE:
1350
1351void
1357max_poll_reqs (int nreqs) 1352max_poll_reqs (unsigned int nreqs)
1358 PROTOTYPE: $ 1353 PROTOTYPE: $
1359 CODE: 1354 CODE:
1360 max_poll_reqs = nreqs; 1355 eio_set_max_poll_reqs (nreqs);
1361 1356
1362void 1357void
1363max_poll_time (double nseconds) 1358max_poll_time (double nseconds)
1364 PROTOTYPE: $ 1359 PROTOTYPE: $
1365 CODE: 1360 CODE:
1366 max_poll_time = nseconds * AIO_TICKS; 1361 eio_set_max_poll_time (nseconds);
1367 1362
1368void 1363void
1369min_parallel (int nthreads) 1364min_parallel (unsigned int nthreads)
1370 PROTOTYPE: $
1371
1372void
1373max_parallel (int nthreads)
1374 PROTOTYPE: $
1375
1376void
1377max_idle (int nthreads)
1378 PROTOTYPE: $ 1365 PROTOTYPE: $
1379 CODE: 1366 CODE:
1380 set_max_idle (nthreads); 1367 eio_set_min_parallel (nthreads);
1381 1368
1382int 1369void
1383max_outstanding (int maxreqs) 1370max_parallel (unsigned int nthreads)
1384 PROTOTYPE: $ 1371 PROTOTYPE: $
1385 CODE: 1372 CODE:
1386 RETVAL = max_outstanding; 1373 eio_set_max_parallel (nthreads);
1374
1375void
1376max_idle (unsigned int nthreads)
1377 PROTOTYPE: $
1378 CODE:
1379 eio_set_max_idle (nthreads);
1380
1381void
1382idle_timeout (unsigned int seconds)
1383 PROTOTYPE: $
1384 CODE:
1385 eio_set_idle_timeout (seconds);
1386
1387void
1388max_outstanding (unsigned int maxreqs)
1389 PROTOTYPE: $
1390 CODE:
1387 max_outstanding = maxreqs; 1391 max_outstanding = maxreqs;
1388 OUTPUT:
1389 RETVAL
1390 1392
1391void 1393void
1392aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef) 1394aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393 PROTOTYPE: $$$;$
1394 PPCODE: 1395 PPCODE:
1395{ 1396{
1396 dREQ; 1397 dREQ;
1397 1398
1399 req->type = EIO_WD_OPEN;
1400 req_set_path1 (req, pathname);
1401
1402 REQ_SEND;
1403}
1404
1405void
1406aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
1407 PPCODE:
1408{
1409 dREQ;
1410
1398 req->type = REQ_OPEN; 1411 req->type = EIO_OPEN;
1399 req->sv1 = newSVsv (pathname); 1412 req_set_path1 (req, pathname);
1400 req->ptr1 = SvPVbyte_nolen (req->sv1);
1401 req->int1 = flags; 1413 req->int1 = flags;
1402 req->mode = mode; 1414 req->int2 = mode;
1403 1415
1404 REQ_SEND; 1416 REQ_SEND;
1405} 1417}
1406 1418
1407void 1419void
1408aio_close (SV *fh, SV *callback=&PL_sv_undef) 1420aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409 PROTOTYPE: $;$
1410 ALIAS: 1421 ALIAS:
1411 aio_close = REQ_CLOSE
1412 aio_fsync = REQ_FSYNC 1422 aio_fsync = EIO_FSYNC
1413 aio_fdatasync = REQ_FDATASYNC 1423 aio_fdatasync = EIO_FDATASYNC
1424 aio_syncfs = EIO_SYNCFS
1414 PPCODE: 1425 PPCODE:
1415{ 1426{
1427 int fd = s_fileno_croak (fh, 0);
1416 dREQ; 1428 dREQ;
1417 1429
1418 req->type = ix; 1430 req->type = ix;
1419 req->sv1 = newSVsv (fh); 1431 req->sv1 = newSVsv (fh);
1420 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh))); 1432 req->int1 = fd;
1421 1433
1422 REQ_SEND (req); 1434 REQ_SEND;
1423} 1435}
1424 1436
1425void 1437void
1438aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1439 PPCODE:
1440{
1441 int fd = s_fileno_croak (fh, 0);
1442 dREQ;
1443
1444 req->type = EIO_SYNC_FILE_RANGE;
1445 req->sv1 = newSVsv (fh);
1446 req->int1 = fd;
1447 req->offs = offset;
1448 req->size = nbytes;
1449 req->int2 = flags;
1450
1451 REQ_SEND;
1452}
1453
1454void
1455aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
1456 PPCODE:
1457{
1458 int fd = s_fileno_croak (fh, 0);
1459 dREQ;
1460
1461 req->type = EIO_FALLOCATE;
1462 req->sv1 = newSVsv (fh);
1463 req->int1 = fd;
1464 req->int2 = mode;
1465 req->offs = offset;
1466 req->size = len;
1467
1468 REQ_SEND;
1469}
1470
1471void
1472aio_close (SV *fh, SV *callback = &PL_sv_undef)
1473 PPCODE:
1474{
1475 int fd = s_fileno_croak (fh, 0);
1476 dREQ;
1477
1478 req->type = EIO_DUP2;
1479 req->int1 = close_fd;
1480 req->sv2 = newSVsv (fh);
1481 req->int2 = fd;
1482
1483 REQ_SEND;
1484}
1485
1486void
1487aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1488 PPCODE:
1489{
1490 int fd = s_fileno_croak (fh, 0);
1491 dREQ;
1492
1493 req->type = EIO_SEEK;
1494 req->sv1 = newSVsv (fh);
1495 req->int1 = fd;
1496 req->offs = SvVAL64 (offset);
1497 req->int2 = whence;
1498
1499 REQ_SEND;
1500}
1501
1502void
1426aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1503aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427 ALIAS: 1504 ALIAS:
1428 aio_read = REQ_READ 1505 aio_read = EIO_READ
1429 aio_write = REQ_WRITE 1506 aio_write = EIO_WRITE
1430 PROTOTYPE: $$$$$;$
1431 PPCODE: 1507 PPCODE:
1432{ 1508{
1433 STRLEN svlen; 1509 STRLEN svlen;
1510 int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434 char *svptr = SvPVbyte (data, svlen); 1511 char *svptr = SvPVbyte (data, svlen);
1435 UV len = SvUV (length); 1512 UV len = SvUV (length);
1436 1513
1437 SvUPGRADE (data, SVt_PV);
1438 SvPOK_on (data);
1439
1440 if (dataoffset < 0) 1514 if (dataoffset < 0)
1441 dataoffset += svlen; 1515 dataoffset += svlen;
1442 1516
1443 if (dataoffset < 0 || dataoffset > svlen) 1517 if (dataoffset < 0 || dataoffset > svlen)
1444 croak ("dataoffset outside of data scalar"); 1518 croak ("dataoffset outside of data scalar");
1445 1519
1446 if (ix == REQ_WRITE) 1520 if (ix == EIO_WRITE)
1447 { 1521 {
1448 /* write: check length and adjust. */ 1522 /* write: check length and adjust. */
1449 if (!SvOK (length) || len + dataoffset > svlen) 1523 if (!SvOK (length) || len + dataoffset > svlen)
1450 len = svlen - dataoffset; 1524 len = svlen - dataoffset;
1451 } 1525 }
1452 else 1526 else
1453 { 1527 {
1454 /* read: grow scalar as necessary */ 1528 /* read: check type and grow scalar as necessary */
1529 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1455 svptr = SvGROW (data, len + dataoffset + 1); 1530 svptr = sv_grow (data, len + dataoffset + 1);
1531 else if (SvCUR (data) < len + dataoffset)
1532 croak ("length + dataoffset outside of scalar, and cannot grow");
1456 } 1533 }
1457
1458 if (len < 0)
1459 croak ("length must not be negative");
1460 1534
1461 { 1535 {
1462 dREQ; 1536 dREQ;
1463 1537
1464 req->type = ix; 1538 req->type = ix;
1465 req->sv1 = newSVsv (fh); 1539 req->sv1 = newSVsv (fh);
1466 req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) 1540 req->int1 = fd;
1467 : IoOFP (sv_2io (fh)));
1468 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1; 1541 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469 req->size = len; 1542 req->size = len;
1470 req->sv2 = SvREFCNT_inc (data); 1543 req->sv2 = SvREFCNT_inc (data);
1471 req->ptr1 = (char *)svptr + dataoffset; 1544 req->ptr2 = (char *)svptr + dataoffset;
1472 req->stroffset = dataoffset; 1545 req->stroffset = dataoffset;
1473 1546
1474 if (!SvREADONLY (data)) 1547 if (!SvREADONLY (data))
1475 { 1548 {
1476 SvREADONLY_on (data); 1549 SvREADONLY_on (data);
… …
1480 REQ_SEND; 1553 REQ_SEND;
1481 } 1554 }
1482} 1555}
1483 1556
1484void 1557void
1485aio_readlink (SV8 *path, SV *callback=&PL_sv_undef) 1558aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1486 PROTOTYPE: $$;$ 1559 ALIAS:
1560 aio_ioctl = EIO_IOCTL
1561 aio_fcntl = EIO_FCNTL
1487 PPCODE: 1562 PPCODE:
1488{ 1563{
1489 SV *data; 1564 int fd = s_fileno_croak (fh, 0);
1490 dREQ; 1565 char *svptr;
1491 1566
1492 data = newSV (NAME_MAX); 1567 if (SvPOK (arg) || !SvNIOK (arg))
1493 SvPOK_on (data);
1494
1495 req->type = REQ_READLINK;
1496 req->sv1 = newSVsv (path);
1497 req->ptr2 = SvPVbyte_nolen (req->sv1);
1498 req->sv2 = data;
1499 req->ptr1 = SvPVbyte_nolen (data);
1500
1501 REQ_SEND;
1502}
1503
1504void
1505aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1506 PROTOTYPE: $$$$;$
1507 PPCODE:
1508{
1509 dREQ;
1510
1511 req->type = REQ_SENDFILE;
1512 req->sv1 = newSVsv (out_fh);
1513 req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1514 req->sv2 = newSVsv (in_fh);
1515 req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1516 req->offs = SvVAL64 (in_offset);
1517 req->size = length;
1518
1519 REQ_SEND;
1520}
1521
1522void
1523aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1524 PROTOTYPE: $$$;$
1525 PPCODE:
1526{
1527 dREQ;
1528
1529 req->type = REQ_READAHEAD;
1530 req->sv1 = newSVsv (fh);
1531 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1532 req->offs = SvVAL64 (offset);
1533 req->size = length;
1534
1535 REQ_SEND;
1536}
1537
1538void
1539aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540 ALIAS:
1541 aio_stat = REQ_STAT
1542 aio_lstat = REQ_LSTAT
1543 PPCODE:
1544{
1545 dREQ;
1546
1547 req->ptr2 = malloc (sizeof (Stat_t));
1548 if (!req->ptr2)
1549 { 1568 {
1550 req_destroy (req); 1569 STRLEN svlen;
1551 croak ("out of memory during aio_stat statdata allocation"); 1570 /* perl uses IOCPARM_LEN for fcntl, so we do, too */
1552 } 1571#ifdef IOCPARM_LEN
1572 STRLEN need = IOCPARM_LEN (request);
1573#else
1574 STRLEN need = 256;
1575#endif
1553 1576
1554 req->flags |= FLAG_PTR2_FREE; 1577 if (svlen < need)
1555 req->sv1 = newSVsv (fh_or_path); 1578 svptr = SvGROW (arg, need);
1556
1557 if (SvPOK (fh_or_path))
1558 {
1559 req->type = ix;
1560 req->ptr1 = SvPVbyte_nolen (req->sv1);
1561 } 1579 }
1562 else 1580 else
1581 svptr = (char *)SvIV (arg);
1582
1563 { 1583 {
1584 dREQ;
1585
1564 req->type = REQ_FSTAT; 1586 req->type = ix;
1565 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); 1587 req->sv1 = newSVsv (fh);
1588 req->int1 = fd;
1589 req->int2 = (long)request;
1590 req->sv2 = SvREFCNT_inc (arg);
1591 req->ptr2 = svptr;
1592
1593 REQ_SEND;
1566 } 1594 }
1595}
1596
1597void
1598aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1599 ALIAS:
1600 aio_readlink = EIO_READLINK
1601 aio_realpath = EIO_REALPATH
1602 PPCODE:
1603{
1604 dREQ;
1605
1606 req->type = ix;
1607 req_set_path1 (req, pathname);
1567 1608
1568 REQ_SEND; 1609 REQ_SEND;
1569} 1610}
1570 1611
1571void 1612void
1613aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1614 PPCODE:
1615{
1616 int ifd = s_fileno_croak (in_fh , 0);
1617 int ofd = s_fileno_croak (out_fh, 1);
1618 dREQ;
1619
1620 req->type = EIO_SENDFILE;
1621 req->sv1 = newSVsv (out_fh);
1622 req->int1 = ofd;
1623 req->sv2 = newSVsv (in_fh);
1624 req->int2 = ifd;
1625 req->offs = in_offset;
1626 req->size = length;
1627
1628 REQ_SEND;
1629}
1630
1631void
1632aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1633 PPCODE:
1634{
1635 int fd = s_fileno_croak (fh, 0);
1636 dREQ;
1637
1638 req->type = EIO_READAHEAD;
1639 req->sv1 = newSVsv (fh);
1640 req->int1 = fd;
1641 req->offs = offset;
1642 req->size = length;
1643
1644 REQ_SEND;
1645}
1646
1647void
1648aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1649 ALIAS:
1650 aio_stat = EIO_STAT
1651 aio_lstat = EIO_LSTAT
1652 aio_statvfs = EIO_STATVFS
1653 PPCODE:
1654{
1655 dREQ;
1656
1657 req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1658
1659 REQ_SEND;
1660}
1661
1662void
1663st_xtime ()
1664 ALIAS:
1665 st_atime = 0x01
1666 st_mtime = 0x02
1667 st_ctime = 0x04
1668 st_btime = 0x08
1669 st_xtime = 0x0f
1670 PPCODE:
1671 EXTEND (SP, 4);
1672 if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
1673 if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
1674 if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
1675 if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
1676
1677void
1678st_xtimensec ()
1679 ALIAS:
1680 st_atimensec = 0x01
1681 st_mtimensec = 0x02
1682 st_ctimensec = 0x04
1683 st_btimensec = 0x08
1684 st_xtimensec = 0x0f
1685 st_btimesec = 0x10
1686 st_gen = 0x20
1687 PPCODE:
1688 EXTEND (SP, 4);
1689 if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
1690 if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
1691 if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
1692 if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
1693 if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
1694 if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
1695
1696UV
1697major (UV dev)
1698 ALIAS:
1699 minor = 1
1700 CODE:
1701 RETVAL = ix ? minor (dev) : major (dev);
1702 OUTPUT:
1703 RETVAL
1704
1705UV
1706makedev (UV maj, UV min)
1707 CODE:
1708 RETVAL = makedev (maj, min);
1709 OUTPUT:
1710 RETVAL
1711
1712void
1572aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef) 1713aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1573 PPCODE: 1714 PPCODE:
1574{ 1715{
1575 dREQ; 1716 dREQ;
1576 1717
1577 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.; 1718 req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.; 1719 req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579 req->sv1 = newSVsv (fh_or_path); 1720 req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1580
1581 if (SvPOK (fh_or_path))
1582 {
1583 req->type = REQ_UTIME;
1584 req->ptr1 = SvPVbyte_nolen (req->sv1);
1585 }
1586 else
1587 {
1588 req->type = REQ_FUTIME;
1589 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590 }
1591 1721
1592 REQ_SEND; 1722 REQ_SEND;
1593} 1723}
1594 1724
1595void 1725void
1596aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) 1726aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1597 PPCODE: 1727 PPCODE:
1598{ 1728{
1599 dREQ; 1729 dREQ;
1600 1730
1601 req->mode = mode; 1731 req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1602 req->sv1 = newSVsv (fh_or_path); 1732 req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1603
1604 if (SvPOK (fh_or_path))
1605 {
1606 req->type = REQ_CHMOD;
1607 req->ptr1 = SvPVbyte_nolen (req->sv1);
1608 }
1609 else
1610 {
1611 req->type = REQ_FCHMOD;
1612 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613 }
1614 1733
1615 REQ_SEND; 1734 REQ_SEND;
1616} 1735}
1617 1736
1618void 1737void
1738aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1739 PPCODE:
1740{
1741 dREQ;
1742
1743 req->int2 = mode;
1744 req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1745
1746 REQ_SEND;
1747}
1748
1749void
1619aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef) 1750aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1620 PPCODE: 1751 PPCODE:
1621{ 1752{
1622 dREQ; 1753 dREQ;
1623 1754
1624 req->int2 = SvOK (uid) ? SvIV (uid) : -1; 1755 req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625 req->int3 = SvOK (gid) ? SvIV (gid) : -1; 1756 req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626 req->sv1 = newSVsv (fh_or_path); 1757 req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1627
1628 if (SvPOK (fh_or_path))
1629 {
1630 req->type = REQ_CHOWN;
1631 req->ptr1 = SvPVbyte_nolen (req->sv1);
1632 }
1633 else
1634 {
1635 req->type = REQ_FCHOWN;
1636 req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637 }
1638 1758
1639 REQ_SEND; 1759 REQ_SEND;
1640} 1760}
1641 1761
1642void 1762void
1763aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
1764 PPCODE:
1765{
1766 dREQ;
1767
1768 req->type = EIO_READDIR;
1769 req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
1770
1771 if (flags & EIO_READDIR_DENTS)
1772 req->int1 |= EIO_READDIR_CUSTOM2;
1773
1774 req_set_path1 (req, pathname);
1775
1776 REQ_SEND;
1777}
1778
1779void
1780aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
1781 PPCODE:
1782{
1783 dREQ;
1784
1785 req->type = EIO_MKDIR;
1786 req->int2 = mode;
1787 req_set_path1 (req, pathname);
1788
1789 REQ_SEND;
1790}
1791
1792void
1643aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) 1793aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1644 ALIAS: 1794 ALIAS:
1645 aio_unlink = REQ_UNLINK 1795 aio_unlink = EIO_UNLINK
1646 aio_rmdir = REQ_RMDIR 1796 aio_rmdir = EIO_RMDIR
1647 aio_readdir = REQ_READDIR 1797 aio_readdir = EIO_READDIR
1648 PPCODE: 1798 PPCODE:
1649{ 1799{
1650 dREQ; 1800 dREQ;
1651 1801
1652 req->type = ix; 1802 req->type = ix;
1653 req->sv1 = newSVsv (pathname); 1803 req_set_path1 (req, pathname);
1654 req->ptr1 = SvPVbyte_nolen (req->sv1);
1655 1804
1656 REQ_SEND; 1805 REQ_SEND;
1657} 1806}
1658 1807
1659void 1808void
1660aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) 1809aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1810 ALIAS:
1811 aio_link = EIO_LINK
1812 aio_symlink = EIO_SYMLINK
1813 aio_rename = EIO_RENAME
1661 PPCODE: 1814 PPCODE:
1662{ 1815{
1663 dREQ; 1816 eio_wd wd2 = 0;
1664
1665 req->type = REQ_MKDIR;
1666 req->sv1 = newSVsv (pathname);
1667 req->ptr1 = SvPVbyte_nolen (req->sv1);
1668 req->mode = mode;
1669
1670 REQ_SEND;
1671}
1672
1673void
1674aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675 ALIAS:
1676 aio_link = REQ_LINK
1677 aio_symlink = REQ_SYMLINK
1678 aio_rename = REQ_RENAME
1679 PPCODE:
1680{
1681 dREQ; 1817 dREQ;
1682 1818
1683 req->type = ix; 1819 req->type = ix;
1684 req->sv2 = newSVsv (oldpath); 1820 req_set_path1 (req, oldpath);
1685 req->ptr2 = SvPVbyte_nolen (req->sv2); 1821 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1686 req->sv1 = newSVsv (newpath); 1822 req->int3 = (long)wd2;
1687 req->ptr1 = SvPVbyte_nolen (req->sv1);
1688 1823
1689 REQ_SEND; 1824 REQ_SEND;
1690} 1825}
1691 1826
1692void 1827void
1693aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef) 1828aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1694 PPCODE: 1829 PPCODE:
1695{ 1830{
1831 eio_wd wd2 = 0;
1696 dREQ; 1832 dREQ;
1697 1833
1698 req->type = REQ_MKNOD; 1834 req->type = EIO_RENAME;
1699 req->sv1 = newSVsv (pathname); 1835 req_set_path1 (req, oldpath);
1700 req->ptr1 = SvPVbyte_nolen (req->sv1); 1836 req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1701 req->mode = (mode_t)mode; 1837 req->int2 = flags;
1702 req->offs = dev; 1838 req->int3 = (long)wd2;
1703 1839
1704 REQ_SEND; 1840 REQ_SEND;
1705} 1841}
1706 1842
1707void 1843void
1708aio_busy (double delay, SV *callback=&PL_sv_undef) 1844aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1709 PPCODE: 1845 PPCODE:
1710{ 1846{
1711 dREQ; 1847 dREQ;
1848
1849 req->type = EIO_MKNOD;
1850 req->int2 = (mode_t)mode;
1851 req->offs = dev;
1852 req_set_path1 (req, pathname);
1853
1854 REQ_SEND;
1855}
1712 1856
1857void
1858aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
1859 ALIAS:
1860 aio_mtouch = EIO_MTOUCH
1861 aio_msync = EIO_MSYNC
1862 PPCODE:
1863{
1864 STRLEN svlen;
1865 char *svptr = SvPVbyte (data, svlen);
1866 UV len = SvUV (length);
1867
1868 if (flags < 0)
1869 flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1870
1871 if (offset < 0)
1872 offset += svlen;
1873
1874 if (offset < 0 || offset > svlen)
1875 croak ("offset outside of scalar");
1876
1877 if (!SvOK (length) || len + offset > svlen)
1878 len = svlen - offset;
1879
1880 {
1881 dREQ;
1882
1883 req->type = ix;
1884 req->sv2 = SvREFCNT_inc (data);
1885 req->ptr2 = (char *)svptr + offset;
1886 req->size = len;
1887 req->int1 = flags;
1888
1889 REQ_SEND;
1890 }
1891}
1892
1893void
1894aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
1895 PPCODE:
1896{
1897 STRLEN svlen;
1898 char *svptr = SvPVbyte (data, svlen);
1899 UV len = SvUV (length);
1900
1901 if (offset < 0)
1902 offset += svlen;
1903
1904 if (offset < 0 || offset > svlen)
1905 croak ("offset outside of scalar");
1906
1907 if (!SvOK (length) || len + offset > svlen)
1908 len = svlen - offset;
1909
1910 {
1911 dREQ;
1912
1913 req->type = EIO_MLOCK;
1914 req->sv2 = SvREFCNT_inc (data);
1915 req->ptr2 = (char *)svptr + offset;
1916 req->size = len;
1917
1918 REQ_SEND;
1919 }
1920}
1921
1922void
1923aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
1924 PPCODE:
1925{
1926 dREQ;
1927
1928 req->type = EIO_MLOCKALL;
1929 req->int1 = flags;
1930
1931 REQ_SEND;
1932}
1933
1934void
1935aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
1936 PPCODE:
1937{
1938 int fd = s_fileno_croak (fh, 0);
1939 dREQ;
1940
1941 req->type = EIO_CUSTOM;
1942 req->sv1 = newSVsv (fh);
1943 req->int1 = fd;
1944
1945 req->feed = fiemap;
1946#if HAVE_FIEMAP
1947 /* keep our fingers crossed that the next two types are 64 bit */
1948 req->offs = start;
1949 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1950 req->int2 = flags;
1951 req->int3 = SvOK (count) ? SvIV (count) : -1;
1952#endif
1953
1954 REQ_SEND;
1955}
1956
1957void
1958aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1959 PPCODE:
1960{
1961 char *svptr = 0;
1962
1963 sv_clear_foreign (data);
1964
1965 if (length) /* known length, directly read into scalar */
1966 {
1967 if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1968 svptr = sv_grow (data, length + 1);
1969 else if (SvCUR (data) < length)
1970 croak ("length outside of scalar, and cannot grow");
1971 else
1972 svptr = SvPVbyte_nolen (data);
1973 }
1974
1975 {
1976 dREQ;
1977
1978 req->type = EIO_SLURP;
1979 req_set_path1 (req, pathname);
1980 req->offs = offset;
1981 req->size = length;
1982 req->sv2 = SvREFCNT_inc (data);
1983 req->ptr2 = svptr;
1984
1985 if (!SvREADONLY (data))
1986 {
1987 SvREADONLY_on (data);
1988 req->flags |= FLAG_SV2_RO_OFF;
1989 }
1990
1991 REQ_SEND;
1992 }
1993}
1994
1995void
1996aio_busy (double delay, SV *callback = &PL_sv_undef)
1997 PPCODE:
1998{
1999 dREQ;
2000
1713 req->type = REQ_BUSY; 2001 req->type = EIO_BUSY;
1714 req->nv1 = delay < 0. ? 0. : delay; 2002 req->nv1 = delay < 0. ? 0. : delay;
1715 2003
1716 REQ_SEND; 2004 REQ_SEND;
1717} 2005}
1718 2006
1719void 2007void
1720aio_group (SV *callback=&PL_sv_undef) 2008aio_group (SV *callback = &PL_sv_undef)
1721 PROTOTYPE: ;$
1722 PPCODE: 2009 PPCODE:
1723{ 2010{
1724 dREQ; 2011 dREQ;
1725 2012
1726 req->type = REQ_GROUP; 2013 req->type = EIO_GROUP;
1727 2014
2015 PUTBACK;
1728 req_send (req); 2016 req_submit (req);
2017 SPAGAIN;
2018
1729 XPUSHs (req_sv (req, AIO_GRP_KLASS)); 2019 XPUSHs (req_sv (req, aio_grp_stash));
1730} 2020}
1731 2021
1732void 2022void
1733aio_nop (SV *callback=&PL_sv_undef) 2023aio_nop (SV *callback = &PL_sv_undef)
2024 ALIAS:
2025 aio_nop = EIO_NOP
2026 aio_sync = EIO_SYNC
1734 PPCODE: 2027 PPCODE:
1735{ 2028{
1736 dREQ; 2029 dREQ;
1737 2030
1738 req->type = REQ_NOP; 2031 req->type = ix;
1739 2032
1740 REQ_SEND; 2033 REQ_SEND;
1741} 2034}
1742 2035
1743int 2036int
1744aioreq_pri (int pri = 0) 2037aioreq_pri (int pri = NO_INIT)
1745 PROTOTYPE: ;$
1746 CODE: 2038 CODE:
1747 RETVAL = next_pri - PRI_BIAS; 2039 RETVAL = next_pri;
1748 if (items > 0) 2040 if (items > 0)
1749 { 2041 {
1750 if (pri < PRI_MIN) pri = PRI_MIN; 2042 if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751 if (pri > PRI_MAX) pri = PRI_MAX; 2043 if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752 next_pri = pri + PRI_BIAS; 2044 next_pri = pri;
1753 } 2045 }
1754 OUTPUT: 2046 OUTPUT:
1755 RETVAL 2047 RETVAL
1756 2048
1757void 2049void
1758aioreq_nice (int nice = 0) 2050aioreq_nice (int nice = 0)
1759 CODE: 2051 CODE:
1760 nice = next_pri - nice; 2052 nice = next_pri - nice;
1761 if (nice < PRI_MIN) nice = PRI_MIN; 2053 if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762 if (nice > PRI_MAX) nice = PRI_MAX; 2054 if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763 next_pri = nice + PRI_BIAS; 2055 next_pri = nice;
1764 2056
1765void 2057void
1766flush () 2058flush ()
1767 PROTOTYPE:
1768 CODE: 2059 CODE:
1769 while (nreqs) 2060 while (eio_nreqs ())
1770 { 2061 {
1771 poll_wait (); 2062 poll_wait ();
1772 poll_cb (); 2063 poll_cb ();
1773 } 2064 }
1774 2065
1775int 2066int
1776poll() 2067poll ()
1777 PROTOTYPE:
1778 CODE: 2068 CODE:
1779 poll_wait (); 2069 poll_wait ();
1780 RETVAL = poll_cb (); 2070 RETVAL = poll_cb ();
1781 OUTPUT: 2071 OUTPUT:
1782 RETVAL 2072 RETVAL
1783 2073
1784int 2074int
1785poll_fileno() 2075poll_fileno ()
1786 PROTOTYPE:
1787 CODE: 2076 CODE:
1788 RETVAL = respipe [0]; 2077 RETVAL = s_epipe_fd (&respipe);
1789 OUTPUT: 2078 OUTPUT:
1790 RETVAL 2079 RETVAL
1791 2080
1792int 2081int
1793poll_cb(...) 2082poll_cb (...)
1794 PROTOTYPE: 2083 PROTOTYPE:
1795 CODE: 2084 CODE:
1796 RETVAL = poll_cb (); 2085 RETVAL = poll_cb ();
1797 OUTPUT: 2086 OUTPUT:
1798 RETVAL 2087 RETVAL
1799 2088
1800void 2089void
1801poll_wait() 2090poll_wait ()
1802 PROTOTYPE:
1803 CODE: 2091 CODE:
1804 poll_wait (); 2092 poll_wait ();
1805 2093
1806void
1807setsig (int signum = SIGIO)
1808 PROTOTYPE: ;$
1809 CODE:
1810{
1811 if (block_sig_level)
1812 croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814 LOCK (reslock);
1815 main_tid = pthread_self ();
1816 main_sig = signum;
1817 UNLOCK (reslock);
1818
1819 if (main_sig && npending)
1820 pthread_kill (main_tid, main_sig);
1821}
1822
1823void
1824aio_block (SV *cb)
1825 PROTOTYPE: &
1826 PPCODE:
1827{
1828 int count;
1829
1830 block_sig ();
1831 PUSHMARK (SP);
1832 PUTBACK;
1833 count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834 SPAGAIN;
1835 unblock_sig ();
1836
1837 if (SvTRUE (ERRSV))
1838 croak (0);
1839
1840 XSRETURN (count);
1841}
1842
1843int 2094int
1844nreqs() 2095nreqs ()
1845 PROTOTYPE:
1846 CODE: 2096 CODE:
1847 RETVAL = nreqs; 2097 RETVAL = eio_nreqs ();
1848 OUTPUT: 2098 OUTPUT:
1849 RETVAL 2099 RETVAL
1850 2100
1851int 2101int
1852nready() 2102nready ()
1853 PROTOTYPE:
1854 CODE: 2103 CODE:
1855 RETVAL = get_nready (); 2104 RETVAL = eio_nready ();
1856 OUTPUT: 2105 OUTPUT:
1857 RETVAL 2106 RETVAL
1858 2107
1859int 2108int
1860npending() 2109npending ()
1861 PROTOTYPE:
1862 CODE: 2110 CODE:
1863 RETVAL = get_npending (); 2111 RETVAL = eio_npending ();
1864 OUTPUT: 2112 OUTPUT:
1865 RETVAL 2113 RETVAL
1866 2114
1867int 2115int
1868nthreads() 2116nthreads ()
1869 PROTOTYPE:
1870 CODE: 2117 CODE:
1871 if (WORDACCESS_UNSAFE) LOCK (wrklock); 2118 RETVAL = eio_nthreads ();
1872 RETVAL = started;
1873 if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874 OUTPUT: 2119 OUTPUT:
1875 RETVAL 2120 RETVAL
1876 2121
2122int
2123fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
2124 CODE:
2125 RETVAL = posix_fadvise (fh, offset, length, advice);
2126 OUTPUT:
2127 RETVAL
2128
2129IV
2130sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
2131 CODE:
2132 RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
2133 OUTPUT:
2134 RETVAL
2135
2136void
2137mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
2138 PPCODE:
2139 sv_clear_foreign (scalar);
2140{
2141 int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
2142 void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
2143 if (addr == (void *)-1)
2144 XSRETURN_NO;
2145
2146 sv_set_foreign (scalar, &mmap_vtbl, addr, length);
2147
2148 if (!(prot & PROT_WRITE))
2149 SvREADONLY_on (scalar);
2150
2151 XSRETURN_YES;
2152}
2153
2154void
2155munmap (SV *scalar)
2156 CODE:
2157 sv_clear_foreign (scalar);
2158
2159SV *
2160mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
2161 CODE:
2162{
2163 MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
2164 void *new;
2165
2166 if (!mg || SvPVX (scalar) != mg->mg_ptr)
2167 croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
2168
2169 new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
2170
2171 RETVAL = &PL_sv_no;
2172
2173 if (new != (void *)-1)
2174 {
2175 RETVAL = new == (void *)mg->mg_ptr
2176 ? newSVpvn ("0 but true", 10)
2177 : &PL_sv_yes;
2178
2179 mg->mg_ptr = (char *)new;
2180 mg->mg_obj = (SV *)new_length;
2181
2182 SvPVX (scalar) = mg->mg_ptr;
2183 SvCUR_set (scalar, new_length);
2184 }
2185}
2186 OUTPUT:
2187 RETVAL
2188
2189int
2190madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
2191 ALIAS:
2192 mprotect = 1
2193 CODE:
2194{
2195 STRLEN svlen;
2196 void *addr = SvPVbyte (scalar, svlen);
2197 STRLEN len = SvUV (length);
2198
2199 if (offset < 0)
2200 offset += svlen;
2201
2202 if (offset < 0 || offset > svlen)
2203 croak ("offset outside of scalar");
2204
2205 if (!SvOK (length) || len + offset > svlen)
2206 len = svlen - offset;
2207
2208 addr = (void *)(((intptr_t)addr) + offset);
2209 eio_page_align (&addr, &len);
2210
2211 switch (ix)
2212 {
2213 case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
2214 case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
2215 }
2216}
2217 OUTPUT:
2218 RETVAL
2219
2220int
2221munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
2222 CODE:
2223{
2224 STRLEN svlen;
2225 void *addr = SvPVbyte (scalar, svlen);
2226 size_t len = SvUV (length);
2227
2228 if (offset < 0)
2229 offset += svlen;
2230
2231 if (offset < 0 || offset > svlen)
2232 croak ("offset outside of scalar");
2233
2234 if (!SvOK (length) || len + offset > svlen)
2235 len = svlen - offset;
2236
2237 addr = (void *)(((intptr_t)addr) + offset);
2238 eio_page_align (&addr, &len);
2239#if _POSIX_MEMLOCK_RANGE
2240 RETVAL = munlock (addr, len);
2241#else
2242 RETVAL = EIO_ENOSYS ();
2243#endif
2244}
2245 OUTPUT:
2246 RETVAL
2247
2248int
2249munlockall ()
2250 CODE:
2251#if _POSIX_MEMLOCK
2252 munlockall ();
2253#else
2254 RETVAL = EIO_ENOSYS ();
2255#endif
2256 OUTPUT:
2257 RETVAL
2258
2259int
2260splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
2261 CODE:
2262{
2263#if HAVE_LINUX_SPLICE
2264 loff_t off_in_, off_out_;
2265 RETVAL = splice (
2266 rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
2267 wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
2268 length, flags
2269 );
2270#else
2271 RETVAL = EIO_ENOSYS ();
2272#endif
2273}
2274 OUTPUT:
2275 RETVAL
2276
2277int
2278tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
2279 CODE:
2280#if HAVE_LINUX_SPLICE
2281 RETVAL = tee (rfh, wfh, length, flags);
2282#else
2283 RETVAL = EIO_ENOSYS ();
2284#endif
2285 OUTPUT:
2286 RETVAL
2287
2288int
2289pipesize (aio_rfd rfh, int new_size = -1)
2290 PROTOTYPE: $;$
2291 CODE:
2292#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
2293 if (new_size >= 0)
2294 RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
2295 else
2296 RETVAL = fcntl (rfh, F_GETPIPE_SZ);
2297#else
2298 errno = ENOSYS;
2299 RETVAL = -1;
2300#endif
2301 OUTPUT:
2302 RETVAL
2303
2304void
2305pipe2 (int flags = 0)
2306 PROTOTYPE: ;$
2307 PPCODE:
2308{
2309 int fd[2];
2310 int res;
2311
2312 if (flags)
2313#if HAVE_PIPE2
2314 res = pipe2 (fd, flags);
2315#else
2316 res = (errno = ENOSYS, -1);
2317#endif
2318 else
2319 res = pipe (fd);
2320
2321 if (!res)
2322 {
2323 EXTEND (SP, 2);
2324 PUSHs (newmortalFH (fd[0], O_RDONLY));
2325 PUSHs (newmortalFH (fd[1], O_WRONLY));
2326 }
2327}
2328
2329void
2330eventfd (unsigned int initval = 0, int flags = 0)
2331 PPCODE:
2332{
2333 int fd;
2334#if HAVE_EVENTFD
2335 fd = eventfd (initval, flags);
2336#else
2337 fd = (errno = ENOSYS, -1);
2338#endif
2339
2340 XPUSHs (newmortalFH (fd, O_RDWR));
2341}
2342
2343void
2344timerfd_create (int clockid, int flags = 0)
2345 PPCODE:
2346{
2347 int fd;
2348#if HAVE_TIMERFD
2349 fd = timerfd_create (clockid, flags);
2350#else
2351 fd = (errno = ENOSYS, -1);
2352#endif
2353
2354 XPUSHs (newmortalFH (fd, O_RDWR));
2355}
2356
2357void
2358timerfd_settime (SV *fh, int flags, NV interval, NV value)
2359 PPCODE:
2360{
2361 int fd = s_fileno_croak (fh, 0);
2362#if HAVE_TIMERFD
2363 int res;
2364 struct itimerspec its, ots;
2365
2366 ts_set (&its.it_interval, interval);
2367 ts_set (&its.it_value , value);
2368 res = timerfd_settime (fd, flags, &its, &ots);
2369
2370 if (!res)
2371 {
2372 EXTEND (SP, 2);
2373 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2374 PUSHs (newSVnv (ts_get (&ots.it_value)));
2375 }
2376#else
2377 errno = ENOSYS;
2378#endif
2379}
2380
2381void
2382timerfd_gettime (SV *fh)
2383 PPCODE:
2384{
2385 int fd = s_fileno_croak (fh, 0);
2386#if HAVE_TIMERFD
2387 int res;
2388 struct itimerspec ots;
2389 res = timerfd_gettime (fd, &ots);
2390
2391 if (!res)
2392 {
2393 EXTEND (SP, 2);
2394 PUSHs (newSVnv (ts_get (&ots.it_interval)));
2395 PUSHs (newSVnv (ts_get (&ots.it_value)));
2396 }
2397#else
2398 errno = ENOSYS;
2399#endif
2400}
2401
2402UV
2403get_fdlimit ()
2404 CODE:
2405#if HAVE_RLIMITS
2406 struct rlimit rl;
2407 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2408 XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
2409#endif
2410 XSRETURN_UNDEF;
2411 OUTPUT:
2412 RETVAL
2413
2414void
2415min_fdlimit (UV limit = 0x7fffffffU)
2416 CODE:
2417{
2418#if HAVE_RLIMITS
2419 struct rlimit rl;
2420 rlim_t orig_rlim_max;
2421 UV bit;
2422
2423 if (0 != getrlimit (RLIMIT_NOFILE, &rl))
2424 goto fail;
2425
2426 if (rl.rlim_cur == RLIM_INFINITY)
2427 XSRETURN_YES;
2428
2429 orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
2430
2431 if (rl.rlim_cur < limit)
2432 {
2433 rl.rlim_cur = limit;
2434
2435 if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
2436 rl.rlim_max = rl.rlim_cur;
2437 }
2438
2439 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2440 XSRETURN_YES;
2441
2442 if (errno == EPERM)
2443 {
2444 /* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
2445 /* our limit overflows a system-wide limit */
2446 /* try an adaptive algorithm, but do not lower the hardlimit */
2447 rl.rlim_max = 0;
2448 for (bit = 0x40000000U; bit; bit >>= 1)
2449 {
2450 rl.rlim_max |= bit;
2451 rl.rlim_cur = rl.rlim_max;
2452
2453 /* nevr decrease the hard limit */
2454 if (rl.rlim_max < orig_rlim_max)
2455 break;
2456
2457 if (0 != setrlimit (RLIMIT_NOFILE, &rl))
2458 rl.rlim_max &= ~bit; /* too high, remove bit again */
2459 }
2460
2461 /* now, raise the soft limit to the max permitted */
2462 if (0 == getrlimit (RLIMIT_NOFILE, &rl))
2463 {
2464 rl.rlim_cur = rl.rlim_max;
2465 if (0 == setrlimit (RLIMIT_NOFILE, &rl))
2466 errno = EPERM;
2467 }
2468 }
2469#endif
2470 fail:
2471 XSRETURN_UNDEF;
2472}
2473
2474void _on_next_submit (SV *cb)
2475 CODE:
2476 SvREFCNT_dec (on_next_submit);
2477 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
2478
1877PROTOTYPES: DISABLE 2479PROTOTYPES: DISABLE
2480
2481MODULE = IO::AIO PACKAGE = IO::AIO::WD
2482
2483BOOT:
2484{
2485 newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
2486 newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
2487}
2488
2489void
2490DESTROY (SV *self)
2491 CODE:
2492{
2493 aio_wd wd = SvAIO_WD (self);
2494#if HAVE_AT
2495 {
2496 SV *callback = &PL_sv_undef;
2497 dREQ; /* clobbers next_pri :/ */
2498 next_pri = req->pri; /* restore next_pri */
2499 req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
2500 req->type = EIO_WD_CLOSE;
2501 req->wd = wd;
2502 REQ_SEND;
2503 }
2504#else
2505 eio_wd_close_sync (wd);
2506#endif
2507}
1878 2508
1879MODULE = IO::AIO PACKAGE = IO::AIO::REQ 2509MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880 2510
1881void 2511void
1882cancel (aio_req_ornot req) 2512cancel (aio_req_ornot req)
1883 CODE: 2513 CODE:
1884 req_cancel (req); 2514 eio_cancel (req);
1885 2515
1886void 2516void
1887cb (aio_req_ornot req, SV *callback=&PL_sv_undef) 2517cb (aio_req_ornot req, SV *callback = NO_INIT)
1888 CODE: 2518 PPCODE:
2519{
2520 if (GIMME_V != G_VOID)
2521 XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
2522
2523 if (items > 1)
2524 {
2525 SV *cb_cv = get_cb (callback);
2526
1889 SvREFCNT_dec (req->callback); 2527 SvREFCNT_dec (req->callback);
1890 req->callback = newSVsv (callback); 2528 req->callback = SvREFCNT_inc (cb_cv);
2529 }
2530}
1891 2531
1892MODULE = IO::AIO PACKAGE = IO::AIO::GRP 2532MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893 2533
1894void 2534void
1895add (aio_req grp, ...) 2535add (aio_req grp, ...)
1896 PPCODE: 2536 PPCODE:
1897{ 2537{
1898 int i; 2538 int i;
1899 aio_req req;
1900
1901 if (main_sig && !block_sig_level)
1902 croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903 2539
1904 if (grp->int1 == 2) 2540 if (grp->int1 == 2)
1905 croak ("cannot add requests to IO::AIO::GRP after the group finished"); 2541 croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906 2542
1907 for (i = 1; i < items; ++i ) 2543 for (i = 1; i < items; ++i )
1908 { 2544 {
2545 aio_req req;
2546
1909 if (GIMME_V != G_VOID) 2547 if (GIMME_V != G_VOID)
1910 XPUSHs (sv_2mortal (newSVsv (ST (i)))); 2548 XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911 2549
1912 req = SvAIO_REQ (ST (i)); 2550 req = SvAIO_REQ (ST (i));
1913 2551
1914 if (req) 2552 if (req)
1915 { 2553 eio_grp_add (grp, req);
1916 ++grp->size;
1917 req->grp = grp;
1918
1919 req->grp_prev = 0;
1920 req->grp_next = grp->grp_first;
1921
1922 if (grp->grp_first)
1923 grp->grp_first->grp_prev = req;
1924
1925 grp->grp_first = req;
1926 }
1927 } 2554 }
1928} 2555}
1929 2556
1930void 2557void
1931cancel_subs (aio_req_ornot req) 2558cancel_subs (aio_req_ornot req)
… …
1940 AV *av; 2567 AV *av;
1941 2568
1942 grp->errorno = errno; 2569 grp->errorno = errno;
1943 2570
1944 av = newAV (); 2571 av = newAV ();
2572 av_extend (av, items - 1);
1945 2573
1946 for (i = 1; i < items; ++i ) 2574 for (i = 1; i < items; ++i )
1947 av_push (av, newSVsv (ST (i))); 2575 av_push (av, newSVsv (ST (i)));
1948 2576
1949 SvREFCNT_dec (grp->sv1); 2577 SvREFCNT_dec (grp->sv1);
… …
1956 grp->errorno = errorno; 2584 grp->errorno = errorno;
1957 2585
1958void 2586void
1959limit (aio_req grp, int limit) 2587limit (aio_req grp, int limit)
1960 CODE: 2588 CODE:
1961 grp->int2 = limit; 2589 eio_grp_limit (grp, limit);
1962 aio_grp_feed (grp);
1963 2590
1964void 2591void
1965feed (aio_req grp, SV *callback=&PL_sv_undef) 2592feed (aio_req grp, SV *callback = &PL_sv_undef)
1966 CODE: 2593 CODE:
1967{ 2594{
1968 SvREFCNT_dec (grp->sv2); 2595 SvREFCNT_dec (grp->sv2);
1969 grp->sv2 = newSVsv (callback); 2596 grp->sv2 = newSVsv (callback);
2597 grp->feed = aio_grp_feed;
1970 2598
1971 if (grp->int2 <= 0) 2599 if (grp->int2 <= 0)
1972 grp->int2 = 2; 2600 grp->int2 = 2;
1973 2601
1974 aio_grp_feed (grp); 2602 eio_grp_limit (grp, grp->int2);
1975} 2603}
1976 2604

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