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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.113 by root, Wed Apr 16 16:45:18 2008 UTC vs.
Revision 1.116 by root, Sat May 10 19:25:33 2008 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"
…		…
15	#include <fcntl.h>	15	#include <fcntl.h>
16	#include <sched.h>	16	#include <sched.h>
17		17
18	#ifdef _WIN32	18	#ifdef _WIN32
19		19
20	# define SIGIO 0	20	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	21	# undef malloc
23	#undef free	22	# undef free
24		23
25	// perl overrides all those nice win32 functions	24	// perl overrides all those nice win32 functions
26	# undef open	25	# undef open
27	# undef read	26	# undef read
28	# undef write	27	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	53	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	54	# define mkdir(a,b) mkdir (a)
56		55
57	#else	56	#else
58		57
59	# include "autoconf/config.h"
60	# include <sys/time.h>	58	# include <sys/time.h>
61	# include <sys/select.h>	59	# include <sys/select.h>
62	# include <unistd.h>	60	# include <unistd.h>
63	# include <utime.h>	61	# include <utime.h>
64	# include <signal.h>	62	# include <signal.h>
65	typedef struct dirent X_DIRENT;	63	# define EIO_STRUCT_DIRENT struct dirent
66		64
67	#endif	65	#endif
68		66
69	#if HAVE_SENDFILE	67	#define EIO_STRUCT_STAT Stat_t
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif
82	#endif
83
84	/* number of seconds after which idle threads exit */
85	#define IDLE_TIMEOUT 10
86
87	/* used for struct dirent, AIX doesn't provide it */
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		68
95	/* use NV for 32 bit perls as it allows larger offsets */	69	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	70	#if IVSIZE >= 8
97	# define SvVAL64 SvIV	71	# define SvVAL64 SvIV
98	#else	72	#else
99	# define SvVAL64 SvNV	73	# define SvVAL64 SvNV
100	#endif	74	#endif
101		75
102	static HV *stash;	76	static HV *stash;
103
104	#define dBUF \
105	char *aio_buf; \
106	X_LOCK (wrklock); \
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
108	X_UNLOCK (wrklock); \
109	if (!aio_buf) \
110	return -1;
111
112	typedef SV SV8; /* byte-sv, used for argument-checking */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
113
114	enum {
115	REQ_QUIT,
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};
131		78
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		81
135	typedef struct aio_cb	82	#define EIO_COMMON \
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;	83	SV *callback; \
140	SV *sv1, *sv2;	84	SV *sv1, *sv2; \
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;	85	STRLEN stroffset; \
148	int type;	86	SV *self
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		87
153	unsigned char flags;	88	#include "libeio/eio.h"
154	unsigned char pri;
155		89
156	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
158	} aio_cb;	92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
159		96
160	enum {	97	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};	99	};
165		100
		101	#include "libeio/eio.c"
		102
166	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
168		105
169	enum {	106	static int max_outstanding = 0;
170	PRI_MIN = -4,
171	PRI_MAX = 4,
172		107
173	DEFAULT_PRI = 0,
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig (void)
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig (void)
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
225		109
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
272		111
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready (void)
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending (void)
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads (void)
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb (void);
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	112	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	113	static void req_cancel (aio_req req);
		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
378		128
379	/* must be called at most once */	129	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
381	{	131	{
382	if (!req->self)	132	if (!req->self)
…		…
400	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	151	}
402		152
403	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
404	{	154	{
405	block_sig ();	155	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	156	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	157	dSP;
414		158
415	ENTER;	159	ENTER;
416	SAVETMPS;	160	SAVETMPS;
417	PUSHMARK (SP);	161	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
419	PUTBACK;	163	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	165	SPAGAIN;
422	FREETMPS;	166	FREETMPS;
423	LEAVE;	167	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	168	}
434
435	unblock_sig ();
436	}	169	}
437		170
438	static void aio_grp_dec (aio_req grp)
439	{
440	--grp->size;
441
442	/* call feeder, if applicable */
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{
448	block_sig ();
449
450	if (!req_invoke (grp))
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456
457	req_destroy (grp);
458	unblock_sig ();
459	}
460	}
461
462	static int req_invoke (aio_req req)	171	static int req_invoke (eio_req *req)
463	{	172	{
464	dSP;	173	dSP;
465		174
466	if (req->flags & FLAG_SV2_RO_OFF)	175	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	176	SvREADONLY_off (req->sv2);
468		177
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
470	{	179	{
471	ENTER;	180	ENTER;
472	SAVETMPS;	181	SAVETMPS;
473	PUSHMARK (SP);	182	PUSHMARK (SP);
474	EXTEND (SP, 1);	183	EXTEND (SP, 1);
475		184
476	switch (req->type)	185	switch (req->type)
477	{	186	{
478	case REQ_READDIR:	187	case EIO_READDIR:
479	{	188	{
480	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
481		190
482	if (req->result >= 0)	191	if (req->result >= 0)
483	{	192	{
…		…
500		209
501	PUSHs (rv);	210	PUSHs (rv);
502	}	211	}
503	break;	212	break;
504		213
505	case REQ_OPEN:	214	case EIO_OPEN:
506	{	215	{
507	/* convert fd to fh */	216	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	217	SV *fh = &PL_sv_undef;
509		218
510	if (req->result >= 0)	219	if (req->result >= 0)
…		…
531		240
532	PUSHs (fh);	241	PUSHs (fh);
533	}	242	}
534	break;	243	break;
535		244
536	case REQ_GROUP:	245	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
538		247
539	if (req->sv1)	248	if (req->sv1)
540	{	249	{
541	int i;	250	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
547	}	256	}
548	break;	257	break;
549		258
550	case REQ_NOP:	259	case EIO_NOP:
551	case REQ_BUSY:	260	case EIO_BUSY:
552	break;	261	break;
553		262
554	case REQ_READLINK:	263	case EIO_READLINK:
555	if (req->result > 0)	264	if (req->result > 0)
556	{	265	{
557	SvCUR_set (req->sv2, req->result);	266	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;	267	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);	268	PUSHs (req->sv2);
560	}	269	}
561	break;	270	break;
562		271
563	case REQ_STAT:	272	case EIO_STAT:
564	case REQ_LSTAT:	273	case EIO_LSTAT:
565	case REQ_FSTAT:	274	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	276	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	278	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;	279	break;
571		280
572	case REQ_READ:	281	case EIO_READ:
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	283	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	284	PUSHs (sv_2mortal (newSViv (req->result)));
576	break;	285	break;
577		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
578	default:	292	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
580	break;	294	break;
581	}	295	}
582		296
…		…
590	LEAVE;	304	LEAVE;
591		305
592	PUTBACK;	306	PUTBACK;
593	}	307	}
594		308
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	309	return !!SvTRUE (ERRSV);
610	}	310	}
611		311
612	static void req_destroy (aio_req req)	312	static void req_destroy (aio_req req)
613	{	313	{
614	if (req->self)	314	if (req->self)
…		…
619		319
620	SvREFCNT_dec (req->sv1);	320	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	321	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
623		323
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	324	Safefree (req);
628	}	325	}
629		326
630	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
631	{	328	{
632	aio_req sub;	329	aio_req sub;
633		330
634	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
635	return;	332	return;
636		333
637	SvREFCNT_dec (grp->sv2);	334	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	335	grp->sv2 = 0;
639		336
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}	338	}
650		339
651	#ifdef USE_SOCKETS_AS_HANDLES	340	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else	342	#else
…		…
690		379
691	respipe_osf [0] = TO_SOCKET (respipe [0]);	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}	382	}
694		383
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread (void)
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait (void)	384	static void poll_wait (void)
791	{	385	{
792	fd_set rfd;	386	fd_set rfd;
793		387
794	while (nreqs)	388	while (eio_nreqs ())
795	{	389	{
796	int size;	390	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	391
		392	X_LOCK (reslock);
798	size = res_queue.size;	393	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	394	X_UNLOCK (reslock);
800		395
801	if (size)	396	if (size)
802	return;	397	return;
803		398
804	maybe_start_thread ();	399	maybe_start_thread ();
…		…
810	}	405	}
811	}	406	}
812		407
813	static int poll_cb (void)	408	static int poll_cb (void)
814	{	409	{
815	dSP;	410	int res;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821		411
822	if (max_poll_time)	412	do
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)
828	{	413	{
829	for (;;)	414	res = eio_poll ();
830	{
831	maybe_start_thread ();
832		415
833	X_LOCK (reslock);	416	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	417	croak (0);
868	}
869
870	count++;
871	}
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889
890	poll_wait ();
891
892	++maxreqs;
893	}	418	}
894		419	while (max_outstanding && max_outstanding <= eio_nreqs ());
895	unblock_sig ();
896	return count;
897	}
898
899	/*****************************************************************************/
900	/* work around various missing functions */
901
902	#if !HAVE_PREADWRITE
903	# define pread aio_pread
904	# define pwrite aio_pwrite
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924		420
925	return res;	421	return res;
926	}	422	}
927		423
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079
1080	if (res < 0
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182
1183	static int
1184	aio_close (int fd)
1185	{
1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1187
1188	X_LOCK (wrklock);
1189
1190	if (close_pipe < 0)
1191	{
1192	int pipefd [2];
1193
1194	if (pipe (pipefd) < 0
1195	|| close (pipefd [1]) < 0
1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
1197	{
1198	X_UNLOCK (wrklock);
1199	return -1;
1200	}
1201
1202	close_pipe = pipefd [0];
1203	}
1204
1205	X_UNLOCK (wrklock);
1206
1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
1208	}
1209
1210	/*****************************************************************************/
1211
1212	X_THREAD_PROC (aio_proc)
1213	{
1214	aio_req req;
1215	struct timespec ts;
1216	worker *self = (worker *)thr_arg;
1217
1218	/* try to distribute timeouts somewhat randomly */
1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1220
1221	for (;;)
1222	{
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224
1225	X_LOCK (reqlock);
1226
1227	for (;;)
1228	{
1229	self->req = req = reqq_shift (&req_queue);
1230
1231	if (req)
1232	break;
1233
1234	++idle;
1235
1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1237	== ETIMEDOUT)
1238	{
1239	if (idle > max_idle)
1240	{
1241	--idle;
1242	X_UNLOCK (reqlock);
1243	X_LOCK (wrklock);
1244	--started;
1245	X_UNLOCK (wrklock);
1246	goto quit;
1247	}
1248
1249	/* we are allowed to idle, so do so without any timeout */
1250	X_COND_WAIT (reqwait, reqlock);
1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1252	}
1253
1254	--idle;
1255	}
1256
1257	--nready;
1258
1259	X_UNLOCK (reqlock);
1260
1261	errno = 0; /* strictly unnecessary */
1262
1263	if (!(req->flags & FLAG_CANCELLED))
1264	switch (req->type)
1265	{
1266	case REQ_READ: req->result = req->offs >= 0
1267	? pread (req->int1, req->ptr1, req->size, req->offs)
1268	: read (req->int1, req->ptr1, req->size); break;
1269	case REQ_WRITE: req->result = req->offs >= 0
1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1271	: write (req->int1, req->ptr1, req->size); break;
1272
1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1275
1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1279
1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1286
1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1297
1298	case REQ_SYNC: req->result = 0; sync (); break;
1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1301
1302	case REQ_READDIR: scandir_ (req, self); break;
1303
1304	case REQ_BUSY:
1305	#ifdef _WIN32
1306	Sleep (req->nv1 * 1000.);
1307	#else
1308	{
1309	struct timeval tv;
1310
1311	tv.tv_sec = req->nv1;
1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1313
1314	req->result = select (0, 0, 0, 0, &tv);
1315	}
1316	#endif
1317	break;
1318
1319	case REQ_UTIME:
1320	case REQ_FUTIME:
1321	{
1322	struct timeval tv[2];
1323	struct timeval *times;
1324
1325	if (req->nv1 != -1. || req->nv2 != -1.)
1326	{
1327	tv[0].tv_sec = req->nv1;
1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1329	tv[1].tv_sec = req->nv2;
1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1331
1332	times = tv;
1333	}
1334	else
1335	times = 0;
1336
1337
1338	req->result = req->type == REQ_FUTIME
1339	? futimes (req->int1, times)
1340	: utimes (req->ptr1, times);
1341	}
1342
1343	case REQ_GROUP:
1344	case REQ_NOP:
1345	break;
1346
1347	case REQ_QUIT:
1348	goto quit;
1349
1350	default:
1351	req->result = -1;
1352	break;
1353	}
1354
1355	req->errorno = errno;
1356
1357	X_LOCK (reslock);
1358
1359	++npending;
1360
1361	if (!reqq_push (&res_queue, req))
1362	{
1363	/* write a dummy byte to the pipe so fh becomes ready */
1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1365
1366	/* optionally signal the main thread asynchronously */
1367	if (main_sig)
1368	pthread_kill (main_tid, main_sig);
1369	}
1370
1371	self->req = 0;
1372	worker_clear (self);
1373
1374	X_UNLOCK (reslock);
1375	}
1376
1377	quit:
1378	X_LOCK (wrklock);
1379	worker_free (self);
1380	X_UNLOCK (wrklock);
1381
1382	return 0;
1383	}
1384
1385	/*****************************************************************************/
1386
1387	static void atfork_prepare (void)
1388	{
1389	X_LOCK (wrklock);
1390	X_LOCK (reqlock);
1391	X_LOCK (reslock);
1392	#if !HAVE_PREADWRITE
1393	X_LOCK (preadwritelock);
1394	#endif
1395	#if !HAVE_READDIR_R
1396	X_LOCK (readdirlock);
1397	#endif
1398	}
1399
1400	static void atfork_parent (void)
1401	{
1402	#if !HAVE_READDIR_R
1403	X_UNLOCK (readdirlock);
1404	#endif
1405	#if !HAVE_PREADWRITE
1406	X_UNLOCK (preadwritelock);
1407	#endif
1408	X_UNLOCK (reslock);
1409	X_UNLOCK (reqlock);
1410	X_UNLOCK (wrklock);
1411	}
1412
1413	static void atfork_child (void)	424	static void atfork_child (void)
1414	{	425	{
1415	aio_req prv;
1416
1417	while (prv = reqq_shift (&req_queue))
1418	req_destroy (prv);
1419
1420	while (prv = reqq_shift (&res_queue))
1421	req_destroy (prv);
1422
1423	while (wrk_first.next != &wrk_first)
1424	{
1425	worker *wrk = wrk_first.next;
1426
1427	if (wrk->req)
1428	req_destroy (wrk->req);
1429
1430	worker_clear (wrk);
1431	worker_free (wrk);
1432	}
1433
1434	started = 0;
1435	idle = 0;
1436	nreqs = 0;
1437	nready = 0;
1438	npending = 0;
1439
1440	create_respipe ();	426	create_respipe ();
1441
1442	atfork_parent ();
1443	}	427	}
1444		428
1445	#define dREQ \	429	#define dREQ \
1446	aio_req req; \	430	aio_req req; \
1447	int req_pri = next_pri; \	431	int req_pri = next_pri; \
1448	next_pri = DEFAULT_PRI + PRI_BIAS; \	432	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1449	\	433	\
1450	if (SvOK (callback) && !SvROK (callback)) \	434	if (SvOK (callback) && !SvROK (callback)) \
1451	croak ("callback must be undef or of reference type"); \	435	croak ("callback must be undef or of reference type"); \
1452	\	436	\
1453	Newz (0, req, 1, aio_cb); \	437	Newz (0, req, 1, eio_req); \
1454	if (!req) \	438	if (!req) \
1455	croak ("out of memory during aio_req allocation"); \	439	croak ("out of memory during eio_req allocation"); \
1456	\	440	\
1457	req->callback = newSVsv (callback); \	441	req->callback = newSVsv (callback); \
1458	req->pri = req_pri	442	req->pri = req_pri
1459		443
1460	#define REQ_SEND \	444	#define REQ_SEND \
1461	req_send (req); \	445	eio_submit (req); \
1462	\	446	\
1463	if (GIMME_V != G_VOID) \	447	if (GIMME_V != G_VOID) \
1464	XPUSHs (req_sv (req, AIO_REQ_KLASS));	448	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1465		449
1466	MODULE = IO::AIO PACKAGE = IO::AIO	450	MODULE = IO::AIO PACKAGE = IO::AIO
…		…
1485	X_MUTEX_CHECK (readdirlock);	469	X_MUTEX_CHECK (readdirlock);
1486		470
1487	X_COND_CHECK (reqwait);	471	X_COND_CHECK (reqwait);
1488	#else	472	#else
1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	473	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1491	#endif	474	#endif
1492		475
1493	create_respipe ();	476	create_respipe ();
1494		477
1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	478	if (eio_init (want_poll, done_poll) < 0)
		479	croak ("IO::AIO: unable to initialise eio library");
		480
		481	/* atfork child called in fifo order, so before eio's handler */
		482	X_THREAD_ATFORK (0, 0, atfork_child);
1496	}	483	}
1497		484
1498	void	485	void
1499	max_poll_reqs (int nreqs)	486	max_poll_reqs (int nreqs)
1500	PROTOTYPE: $	487	PROTOTYPE: $
1501	CODE:	488	CODE:
1502	max_poll_reqs = nreqs;	489	eio_set_max_poll_reqs (nreqs);
1503		490
1504	void	491	void
1505	max_poll_time (double nseconds)	492	max_poll_time (double nseconds)
1506	PROTOTYPE: $	493	PROTOTYPE: $
1507	CODE:	494	CODE:
1508	max_poll_time = nseconds * AIO_TICKS;	495	eio_set_max_poll_time (nseconds);
1509		496
1510	void	497	void
1511	min_parallel (int nthreads)	498	min_parallel (int nthreads)
1512	PROTOTYPE: $	499	PROTOTYPE: $
		500	CODE:
		501	eio_set_min_parallel (nthreads);
1513		502
1514	void	503	void
1515	max_parallel (int nthreads)	504	max_parallel (int nthreads)
1516	PROTOTYPE: $	505	PROTOTYPE: $
		506	CODE:
		507	eio_set_max_parallel (nthreads);
1517		508
1518	void	509	void
1519	max_idle (int nthreads)	510	max_idle (int nthreads)
1520	PROTOTYPE: $	511	PROTOTYPE: $
1521	CODE:	512	CODE:
1522	set_max_idle (nthreads);	513	eio_set_max_idle (nthreads);
1523		514
1524	int	515	void
1525	max_outstanding (int maxreqs)	516	max_outstanding (int maxreqs)
1526	PROTOTYPE: $	517	PROTOTYPE: $
1527	CODE:	518	CODE:
1528	RETVAL = max_outstanding;
1529	max_outstanding = maxreqs;	519	max_outstanding = maxreqs;
1530	OUTPUT:
1531	RETVAL
1532		520
1533	void	521	void
1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	522	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1535	PROTOTYPE: $$$;$	523	PROTOTYPE: $$$;$
1536	PPCODE:	524	PPCODE:
1537	{	525	{
1538	dREQ;	526	dREQ;
1539		527
1540	req->type = REQ_OPEN;	528	req->type = EIO_OPEN;
1541	req->sv1 = newSVsv (pathname);	529	req->sv1 = newSVsv (pathname);
1542	req->ptr1 = SvPVbyte_nolen (req->sv1);	530	req->ptr1 = SvPVbyte_nolen (req->sv1);
1543	req->int1 = flags;	531	req->int1 = flags;
1544	req->mode = mode;	532	req->int2 = mode;
1545		533
1546	REQ_SEND;	534	REQ_SEND;
1547	}	535	}
1548		536
1549	void	537	void
1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	538	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$	539	PROTOTYPE: $;$
1552	ALIAS:	540	ALIAS:
1553	aio_fsync = REQ_FSYNC	541	aio_fsync = EIO_FSYNC
1554	aio_fdatasync = REQ_FDATASYNC	542	aio_fdatasync = EIO_FDATASYNC
1555	PPCODE:	543	PPCODE:
1556	{	544	{
1557	dREQ;	545	dREQ;
1558		546
1559	req->type = ix;	547	req->type = ix;
…		…
1566	void	554	void
1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)	555	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1568	PROTOTYPE: $;$	556	PROTOTYPE: $;$
1569	PPCODE:	557	PPCODE:
1570	{	558	{
		559	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1571	dREQ;	560	dREQ;
1572		561
		562	if (close_pipe < 0)
		563	{
		564	int pipefd [2];
		565
		566	if (pipe (pipefd) < 0
		567	|| close (pipefd [1]) < 0
		568	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		569	abort (); /*D*/
		570
		571	close_pipe = pipefd [0];
		572	}
		573
1573	req->type = REQ_CLOSE;	574	req->type = EIO_DUP2;
		575	req->int1 = close_pipe;
		576	req->sv2 = newSVsv (fh);
1574	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	577	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1575		578
1576	REQ_SEND (req);	579	REQ_SEND (req);
1577	}	580	}
1578		581
1579	void	582	void
1580	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	583	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1581	ALIAS:	584	ALIAS:
1582	aio_read = REQ_READ	585	aio_read = EIO_READ
1583	aio_write = REQ_WRITE	586	aio_write = EIO_WRITE
1584	PROTOTYPE: $$$$$;$	587	PROTOTYPE: $$$$$;$
1585	PPCODE:	588	PPCODE:
1586	{	589	{
1587	STRLEN svlen;	590	STRLEN svlen;
1588	char *svptr = SvPVbyte (data, svlen);	591	char *svptr = SvPVbyte (data, svlen);
…		…
1595	dataoffset += svlen;	598	dataoffset += svlen;
1596		599
1597	if (dataoffset < 0 || dataoffset > svlen)	600	if (dataoffset < 0 || dataoffset > svlen)
1598	croak ("dataoffset outside of data scalar");	601	croak ("dataoffset outside of data scalar");
1599		602
1600	if (ix == REQ_WRITE)	603	if (ix == EIO_WRITE)
1601	{	604	{
1602	/* write: check length and adjust. */	605	/* write: check length and adjust. */
1603	if (!SvOK (length) || len + dataoffset > svlen)	606	if (!SvOK (length) || len + dataoffset > svlen)
1604	len = svlen - dataoffset;	607	len = svlen - dataoffset;
1605	}	608	}
…		…
1615	{	618	{
1616	dREQ;	619	dREQ;
1617		620
1618	req->type = ix;	621	req->type = ix;
1619	req->sv1 = newSVsv (fh);	622	req->sv1 = newSVsv (fh);
1620	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	623	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1621	: IoOFP (sv_2io (fh)));	624	: IoOFP (sv_2io (fh)));
1622	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	625	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1623	req->size = len;	626	req->size = len;
1624	req->sv2 = SvREFCNT_inc (data);	627	req->sv2 = SvREFCNT_inc (data);
1625	req->ptr1 = (char *)svptr + dataoffset;	628	req->ptr2 = (char *)svptr + dataoffset;
1626	req->stroffset = dataoffset;	629	req->stroffset = dataoffset;
1627		630
1628	if (!SvREADONLY (data))	631	if (!SvREADONLY (data))
1629	{	632	{
1630	SvREADONLY_on (data);	633	SvREADONLY_on (data);
…		…
1644	dREQ;	647	dREQ;
1645		648
1646	data = newSV (NAME_MAX);	649	data = newSV (NAME_MAX);
1647	SvPOK_on (data);	650	SvPOK_on (data);
1648		651
1649	req->type = REQ_READLINK;	652	req->type = EIO_READLINK;
1650	req->sv1 = newSVsv (path);	653	req->sv1 = newSVsv (path);
1651	req->ptr2 = SvPVbyte_nolen (req->sv1);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1652	req->sv2 = data;	655	req->sv2 = data;
1653	req->ptr1 = SvPVbyte_nolen (data);	656	req->ptr2 = SvPVbyte_nolen (data);
1654		657
1655	REQ_SEND;	658	REQ_SEND;
1656	}	659	}
1657		660
1658	void	661	void
…		…
1660	PROTOTYPE: $$$$;$	663	PROTOTYPE: $$$$;$
1661	PPCODE:	664	PPCODE:
1662	{	665	{
1663	dREQ;	666	dREQ;
1664		667
1665	req->type = REQ_SENDFILE;	668	req->type = EIO_SENDFILE;
1666	req->sv1 = newSVsv (out_fh);	669	req->sv1 = newSVsv (out_fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	670	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1668	req->sv2 = newSVsv (in_fh);	671	req->sv2 = newSVsv (in_fh);
1669	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	672	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1670	req->offs = SvVAL64 (in_offset);	673	req->offs = SvVAL64 (in_offset);
…		…
1678	PROTOTYPE: $$$;$	681	PROTOTYPE: $$$;$
1679	PPCODE:	682	PPCODE:
1680	{	683	{
1681	dREQ;	684	dREQ;
1682		685
1683	req->type = REQ_READAHEAD;	686	req->type = EIO_READAHEAD;
1684	req->sv1 = newSVsv (fh);	687	req->sv1 = newSVsv (fh);
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1686	req->offs = SvVAL64 (offset);	689	req->offs = SvVAL64 (offset);
1687	req->size = length;	690	req->size = length;
1688		691
…		…
1690	}	693	}
1691		694
1692	void	695	void
1693	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	696	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1694	ALIAS:	697	ALIAS:
1695	aio_stat = REQ_STAT	698	aio_stat = EIO_STAT
1696	aio_lstat = REQ_LSTAT	699	aio_lstat = EIO_LSTAT
1697	PPCODE:	700	PPCODE:
1698	{	701	{
1699	dREQ;	702	dREQ;
1700		703
1701	req->ptr2 = malloc (sizeof (Stat_t));	704	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1702	if (!req->ptr2)	705	if (!req->ptr2)
1703	{	706	{
1704	req_destroy (req);	707	req_destroy (req);
1705	croak ("out of memory during aio_stat statdata allocation");	708	croak ("out of memory during aio_stat statdata allocation");
1706	}	709	}
1707		710
1708	req->flags |= FLAG_PTR2_FREE;	711	req->flags |= EIO_FLAG_PTR2_FREE;
1709	req->sv1 = newSVsv (fh_or_path);	712	req->sv1 = newSVsv (fh_or_path);
1710		713
1711	if (SvPOK (fh_or_path))	714	if (SvPOK (fh_or_path))
1712	{	715	{
1713	req->type = ix;	716	req->type = ix;
1714	req->ptr1 = SvPVbyte_nolen (req->sv1);	717	req->ptr1 = SvPVbyte_nolen (req->sv1);
1715	}	718	}
1716	else	719	else
1717	{	720	{
1718	req->type = REQ_FSTAT;	721	req->type = EIO_FSTAT;
1719	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	722	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1720	}	723	}
1721		724
1722	REQ_SEND;	725	REQ_SEND;
1723	}	726	}
…		…
1732	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	735	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1733	req->sv1 = newSVsv (fh_or_path);	736	req->sv1 = newSVsv (fh_or_path);
1734		737
1735	if (SvPOK (fh_or_path))	738	if (SvPOK (fh_or_path))
1736	{	739	{
1737	req->type = REQ_UTIME;	740	req->type = EIO_UTIME;
1738	req->ptr1 = SvPVbyte_nolen (req->sv1);	741	req->ptr1 = SvPVbyte_nolen (req->sv1);
1739	}	742	}
1740	else	743	else
1741	{	744	{
1742	req->type = REQ_FUTIME;	745	req->type = EIO_FUTIME;
1743	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	746	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1744	}	747	}
1745		748
1746	REQ_SEND;	749	REQ_SEND;
1747	}	750	}
…		…
1755	req->sv1 = newSVsv (fh_or_path);	758	req->sv1 = newSVsv (fh_or_path);
1756	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	759	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1757		760
1758	if (SvPOK (fh_or_path))	761	if (SvPOK (fh_or_path))
1759	{	762	{
1760	req->type = REQ_TRUNCATE;	763	req->type = EIO_TRUNCATE;
1761	req->ptr1 = SvPVbyte_nolen (req->sv1);	764	req->ptr1 = SvPVbyte_nolen (req->sv1);
1762	}	765	}
1763	else	766	else
1764	{	767	{
1765	req->type = REQ_FTRUNCATE;	768	req->type = EIO_FTRUNCATE;
1766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	769	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1767	}	770	}
1768		771
1769	REQ_SEND;	772	REQ_SEND;
1770	}	773	}
1771		774
1772	void	775	void
1773	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	776	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		777	ALIAS:
		778	aio_chmod = EIO_CHMOD
		779	aio_fchmod = EIO_FCHMOD
		780	aio_mkdir = EIO_MKDIR
1774	PPCODE:	781	PPCODE:
1775	{	782	{
1776	dREQ;	783	dREQ;
1777		784
		785	req->type = ix;
1778	req->mode = mode;	786	req->int2 = mode;
1779	req->sv1 = newSVsv (fh_or_path);	787	req->sv1 = newSVsv (fh_or_path);
1780		788
1781	if (SvPOK (fh_or_path))	789	if (ix == EIO_FCHMOD)
1782	{	790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1783	req->type = REQ_CHMOD;
1784	req->ptr1 = SvPVbyte_nolen (req->sv1);
1785	}
1786	else	791	else
1787	{	792	req->ptr1 = SvPVbyte_nolen (req->sv1);
1788	req->type = REQ_FCHMOD;
1789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1790	}
1791		793
1792	REQ_SEND;	794	REQ_SEND;
1793	}	795	}
1794		796
1795	void	797	void
…		…
1802	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1803	req->sv1 = newSVsv (fh_or_path);	805	req->sv1 = newSVsv (fh_or_path);
1804		806
1805	if (SvPOK (fh_or_path))	807	if (SvPOK (fh_or_path))
1806	{	808	{
1807	req->type = REQ_CHOWN;	809	req->type = EIO_CHOWN;
1808	req->ptr1 = SvPVbyte_nolen (req->sv1);	810	req->ptr1 = SvPVbyte_nolen (req->sv1);
1809	}	811	}
1810	else	812	else
1811	{	813	{
1812	req->type = REQ_FCHOWN;	814	req->type = EIO_FCHOWN;
1813	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1814	}	816	}
1815		817
1816	REQ_SEND;	818	REQ_SEND;
1817	}	819	}
1818		820
1819	void	821	void
1820	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1821	ALIAS:	823	ALIAS:
1822	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1823	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1824	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1825	PPCODE:	827	PPCODE:
1826	{	828	{
1827	dREQ;	829	dREQ;
1828		830
1829	req->type = ix;	831	req->type = ix;
…		…
1832		834
1833	REQ_SEND;	835	REQ_SEND;
1834	}	836	}
1835		837
1836	void	838	void
1837	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_link = EIO_LINK
		842	aio_symlink = EIO_SYMLINK
		843	aio_rename = EIO_RENAME
1838	PPCODE:	844	PPCODE:
1839	{	845	{
1840	dREQ;	846	dREQ;
1841		847
		848	req->type = ix;
		849	req->sv1 = newSVsv (oldpath);
		850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
		853
		854	REQ_SEND;
		855	}
		856
		857	void
		858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
1842	req->type = REQ_MKDIR;	863	req->type = EIO_MKNOD;
1843	req->sv1 = newSVsv (pathname);	864	req->sv1 = newSVsv (pathname);
1844	req->ptr1 = SvPVbyte_nolen (req->sv1);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1845	req->mode = mode;
1846
1847	REQ_SEND;
1848	}
1849
1850	void
1851	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1852	ALIAS:
1853	aio_link = REQ_LINK
1854	aio_symlink = REQ_SYMLINK
1855	aio_rename = REQ_RENAME
1856	PPCODE:
1857	{
1858	dREQ;
1859
1860	req->type = ix;
1861	req->sv2 = newSVsv (oldpath);
1862	req->ptr2 = SvPVbyte_nolen (req->sv2);
1863	req->sv1 = newSVsv (newpath);
1864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1865
1866	REQ_SEND;
1867	}
1868
1869	void
1870	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1871	PPCODE:
1872	{
1873	dREQ;
1874
1875	req->type = REQ_MKNOD;
1876	req->sv1 = newSVsv (pathname);
1877	req->ptr1 = SvPVbyte_nolen (req->sv1);
1878	req->mode = (mode_t)mode;	866	req->int2 = (mode_t)mode;
1879	req->offs = dev;	867	req->offs = dev;
1880		868
1881	REQ_SEND;	869	REQ_SEND;
1882	}	870	}
1883		871
…		…
1885	aio_busy (double delay, SV *callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1886	PPCODE:	874	PPCODE:
1887	{	875	{
1888	dREQ;	876	dREQ;
1889		877
1890	req->type = REQ_BUSY;	878	req->type = EIO_BUSY;
1891	req->nv1 = delay < 0. ? 0. : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1892		880
1893	REQ_SEND;	881	REQ_SEND;
1894	}	882	}
1895		883
…		…
1898	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1899	PPCODE:	887	PPCODE:
1900	{	888	{
1901	dREQ;	889	dREQ;
1902		890
1903	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
1904		892
1905	req_send (req);	893	eio_submit (req);
1906	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1907	}	895	}
1908		896
1909	void	897	void
1910	aio_nop (SV *callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
1911	ALIAS:	899	ALIAS:
1912	aio_nop = REQ_NOP	900	aio_nop = EIO_NOP
1913	aio_sync = REQ_SYNC	901	aio_sync = EIO_SYNC
1914	PPCODE:	902	PPCODE:
1915	{	903	{
1916	dREQ;	904	dREQ;
1917		905
1918	req->type = ix;	906	req->type = ix;
…		…
1922		910
1923	int	911	int
1924	aioreq_pri (int pri = 0)	912	aioreq_pri (int pri = 0)
1925	PROTOTYPE: ;$	913	PROTOTYPE: ;$
1926	CODE:	914	CODE:
1927	RETVAL = next_pri - PRI_BIAS;	915	RETVAL = next_pri - EIO_PRI_BIAS;
1928	if (items > 0)	916	if (items > 0)
1929	{	917	{
1930	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1931	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1932	next_pri = pri + PRI_BIAS;	920	next_pri = pri + EIO_PRI_BIAS;
1933	}	921	}
1934	OUTPUT:	922	OUTPUT:
1935	RETVAL	923	RETVAL
1936		924
1937	void	925	void
1938	aioreq_nice (int nice = 0)	926	aioreq_nice (int nice = 0)
1939	CODE:	927	CODE:
1940	nice = next_pri - nice;	928	nice = next_pri - nice;
1941	if (nice < PRI_MIN) nice = PRI_MIN;	929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1942	if (nice > PRI_MAX) nice = PRI_MAX;	930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1943	next_pri = nice + PRI_BIAS;	931	next_pri = nice + EIO_PRI_BIAS;
1944		932
1945	void	933	void
1946	flush ()	934	flush ()
1947	PROTOTYPE:	935	PROTOTYPE:
1948	CODE:	936	CODE:
1949	while (nreqs)	937	while (eio_nreqs ())
1950	{	938	{
1951	poll_wait ();	939	poll_wait ();
1952	poll_cb ();	940	poll_cb ();
1953	}	941	}
1954		942
…		…
1981	poll_wait()	969	poll_wait()
1982	PROTOTYPE:	970	PROTOTYPE:
1983	CODE:	971	CODE:
1984	poll_wait ();	972	poll_wait ();
1985		973
1986	void
1987	setsig (int signum = SIGIO)
1988	PROTOTYPE: ;$
1989	CODE:
1990	{
1991	if (block_sig_level)
1992	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1993
1994	X_LOCK (reslock);
1995	main_tid = pthread_self ();
1996	main_sig = signum;
1997	X_UNLOCK (reslock);
1998
1999	if (main_sig && npending)
2000	pthread_kill (main_tid, main_sig);
2001	}
2002
2003	void
2004	aio_block (SV *cb)
2005	PROTOTYPE: &
2006	PPCODE:
2007	{
2008	int count;
2009
2010	block_sig ();
2011	PUSHMARK (SP);
2012	PUTBACK;
2013	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
2014	unblock_sig ();
2015
2016	if (SvTRUE (ERRSV))
2017	croak (0);
2018
2019	XSRETURN (count);
2020	}
2021
2022	int	974	int
2023	nreqs()	975	nreqs()
2024	PROTOTYPE:	976	PROTOTYPE:
2025	CODE:	977	CODE:
2026	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
2027	OUTPUT:	979	OUTPUT:
2028	RETVAL	980	RETVAL
2029		981
2030	int	982	int
2031	nready()	983	nready()
2032	PROTOTYPE:	984	PROTOTYPE:
2033	CODE:	985	CODE:
2034	RETVAL = get_nready ();	986	RETVAL = eio_nready ();
2035	OUTPUT:	987	OUTPUT:
2036	RETVAL	988	RETVAL
2037		989
2038	int	990	int
2039	npending()	991	npending()
2040	PROTOTYPE:	992	PROTOTYPE:
2041	CODE:	993	CODE:
2042	RETVAL = get_npending ();	994	RETVAL = eio_npending ();
2043	OUTPUT:	995	OUTPUT:
2044	RETVAL	996	RETVAL
2045		997
2046	int	998	int
2047	nthreads()	999	nthreads()
…		…
2058	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1010	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2059		1011
2060	void	1012	void
2061	cancel (aio_req_ornot req)	1013	cancel (aio_req_ornot req)
2062	CODE:	1014	CODE:
2063	req_cancel (req);	1015	eio_cancel (req);
2064		1016
2065	void	1017	void
2066	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1018	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2067	CODE:	1019	CODE:
2068	SvREFCNT_dec (req->callback);	1020	SvREFCNT_dec (req->callback);
…		…
2073	void	1025	void
2074	add (aio_req grp, ...)	1026	add (aio_req grp, ...)
2075	PPCODE:	1027	PPCODE:
2076	{	1028	{
2077	int i;	1029	int i;
2078	aio_req req;
2079
2080	if (main_sig && !block_sig_level)
2081	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2082		1030
2083	if (grp->int1 == 2)	1031	if (grp->int1 == 2)
2084	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1032	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2085		1033
2086	for (i = 1; i < items; ++i )	1034	for (i = 1; i < items; ++i )
2087	{	1035	{
		1036	aio_req req;
		1037
2088	if (GIMME_V != G_VOID)	1038	if (GIMME_V != G_VOID)
2089	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1039	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2090		1040
2091	req = SvAIO_REQ (ST (i));	1041	req = SvAIO_REQ (ST (i));
2092		1042
2093	if (req)	1043	if (req)
2094	{	1044	eio_grp_add (grp, req);
2095	++grp->size;
2096	req->grp = grp;
2097
2098	req->grp_prev = 0;
2099	req->grp_next = grp->grp_first;
2100
2101	if (grp->grp_first)
2102	grp->grp_first->grp_prev = req;
2103
2104	grp->grp_first = req;
2105	}
2106	}	1045	}
2107	}	1046	}
2108		1047
2109	void	1048	void
2110	cancel_subs (aio_req_ornot req)	1049	cancel_subs (aio_req_ornot req)
…		…
2135	grp->errorno = errorno;	1074	grp->errorno = errorno;
2136		1075
2137	void	1076	void
2138	limit (aio_req grp, int limit)	1077	limit (aio_req grp, int limit)
2139	CODE:	1078	CODE:
2140	grp->int2 = limit;	1079	eio_grp_limit (grp, limit);
2141	aio_grp_feed (grp);
2142		1080
2143	void	1081	void
2144	feed (aio_req grp, SV *callback=&PL_sv_undef)	1082	feed (aio_req grp, SV *callback=&PL_sv_undef)
2145	CODE:	1083	CODE:
2146	{	1084	{
…		…
2148	grp->sv2 = newSVsv (callback);	1086	grp->sv2 = newSVsv (callback);
2149		1087
2150	if (grp->int2 <= 0)	1088	if (grp->int2 <= 0)
2151	grp->int2 = 2;	1089	grp->int2 = 2;
2152		1090
2153	aio_grp_feed (grp);	1091	eio_grp_limit (grp, grp->int2);
2154	}	1092	}
2155		1093

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