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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.104 by root, Sun Jul 8 11:05:36 2007 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 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	#define dBUF \	76	static HV *stash;
103	char *aio_buf; \
104	X_LOCK (wrklock); \
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
106	X_UNLOCK (wrklock); \
107	if (!aio_buf) \
108	return -1;
109
110	typedef SV SV8; /* byte-sv, used for argument-checking */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
111
112	enum {
113	REQ_QUIT,
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};
129		78
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
132		81
133	typedef struct aio_cb	82	#define EIO_COMMON \
134	{
135	struct aio_cb *volatile next;
136
137	SV *callback;	83	SV *callback; \
138	SV *sv1, *sv2;	84	SV *sv1, *sv2; \
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144
145	STRLEN stroffset;	85	STRLEN stroffset; \
146	int type;	86	SV *self
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150		87
151	unsigned char flags;	88	#include "libeio/eio.h"
152	unsigned char pri;
153		89
154	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
156	} 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)
157		96
158	enum {	97	enum {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};	99	};
163		100
		101	#include "libeio/eio.c"
		102
164	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
165	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
166		105
167	enum {	106	static unsigned int max_outstanding = 0x7fffffff;
168	PRI_MIN = -4,
169	PRI_MAX = 4,
170		107
171	DEFAULT_PRI = 0,
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187
188	static thread_t main_tid;
189	static int main_sig;
190	static int block_sig_level;
191
192	void block_sig ()
193	{
194	sigset_t ss;
195
196	if (block_sig_level++)
197	return;
198
199	if (!main_sig)
200	return;
201
202	sigemptyset (&ss);
203	sigaddset (&ss, main_sig);
204	pthread_sigmask (SIG_BLOCK, &ss, 0);
205	}
206
207	void unblock_sig ()
208	{
209	sigset_t ss;
210
211	if (--block_sig_level)
212	return;
213
214	if (!main_sig)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
223		109
224	static unsigned int started, idle, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
225		111
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{
247	closedir (wrk->dirp);
248	wrk->dirp = 0;
249	}
250
251	if (wrk->dbuf)
252	{
253	free (wrk->dbuf);
254	wrk->dbuf = 0;
255	}
256	}
257
258	static void worker_free (worker *wrk)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe [2], respipe_osf [2];
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;
353
354	--q->size;
355
356	for (pri = NUM_PRI; pri--; )
357	{
358	aio_req req = q->qs[pri];
359
360	if (req)
361	{
362	if (!(q->qs[pri] = req->next))
363	q->qe[pri] = 0;
364
365	return req;
366	}
367	}
368
369	abort ();
370	}
371
372	static int poll_cb ();
373	static int req_invoke (aio_req req);
374	static void req_destroy (aio_req req);	112	static void req_destroy (aio_req req);
375	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	}
376		128
377	/* must be called at most once */	129	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
379	{	131	{
380	if (!req->self)	132	if (!req->self)
…		…
398	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	151	}
400		152
401	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
402	{	154	{
403	block_sig ();	155	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	156	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	157	dSP;
412		158
413	ENTER;	159	ENTER;
414	SAVETMPS;	160	SAVETMPS;
415	PUSHMARK (SP);	161	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
417	PUTBACK;	163	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	165	SPAGAIN;
420	FREETMPS;	166	FREETMPS;
421	LEAVE;	167	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	168	}
432
433	unblock_sig ();
434	}	169	}
435		170
436	static void aio_grp_dec (aio_req grp)
437	{
438	--grp->size;
439
440	/* call feeder, if applicable */
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{
446	block_sig ();
447
448	if (!req_invoke (grp))
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454
455	req_destroy (grp);
456	unblock_sig ();
457	}
458	}
459
460	static int req_invoke (aio_req req)	171	static int req_invoke (eio_req *req)
461	{	172	{
462	dSP;	173	dSP;
463		174
464	if (req->flags & FLAG_SV2_RO_OFF)	175	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	176	SvREADONLY_off (req->sv2);
466		177
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
468	{	179	{
469	ENTER;	180	ENTER;
470	SAVETMPS;	181	SAVETMPS;
471	PUSHMARK (SP);	182	PUSHMARK (SP);
472	EXTEND (SP, 1);	183	EXTEND (SP, 1);
473		184
474	switch (req->type)	185	switch (req->type)
475	{	186	{
476	case REQ_READDIR:	187	case EIO_READDIR:
477	{	188	{
478	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
479		190
480	if (req->result >= 0)	191	if (req->result >= 0)
481	{	192	{
…		…
498		209
499	PUSHs (rv);	210	PUSHs (rv);
500	}	211	}
501	break;	212	break;
502		213
503	case REQ_OPEN:	214	case EIO_OPEN:
504	{	215	{
505	/* convert fd to fh */	216	/* convert fd to fh */
506	SV *fh;	217	SV *fh = &PL_sv_undef;
507		218
508	PUSHs (sv_2mortal (newSViv (req->result)));	219	if (req->result >= 0)
509	PUTBACK;	220	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	221	GV *gv = (GV *)sv_newmortal ();
511	SPAGAIN;	222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
512		228
513	fh = POPs;	229	symlen = snprintf (
514	PUSHMARK (SP);	230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
515	XPUSHs (fh);	241	PUSHs (fh);
516	}	242	}
517	break;	243	break;
518		244
519	case REQ_GROUP:	245	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
521		247
522	if (req->sv1)	248	if (req->sv1)
523	{	249	{
524	int i;	250	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
530	}	256	}
531	break;	257	break;
532		258
533	case REQ_NOP:	259	case EIO_NOP:
534	case REQ_BUSY:	260	case EIO_BUSY:
535	break;	261	break;
536		262
537	case REQ_READLINK:	263	case EIO_READLINK:
538	if (req->result > 0)	264	if (req->result > 0)
539	{	265	{
540	SvCUR_set (req->sv2, req->result);	266	SvCUR_set (req->sv2, req->result);
541	*SvEND (req->sv2) = 0;	267	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);	268	PUSHs (req->sv2);
543	}	269	}
544	break;	270	break;
545		271
546	case REQ_STAT:	272	case EIO_STAT:
547	case REQ_LSTAT:	273	case EIO_LSTAT:
548	case REQ_FSTAT:	274	case EIO_FSTAT:
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
550	PL_laststatval = req->result;	276	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);	277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));	278	PUSHs (sv_2mortal (newSViv (req->result)));
553	break;	279	break;
554		280
555	case REQ_READ:	281	case EIO_READ:
556	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));
557	*SvEND (req->sv2) = 0;	283	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));	284	PUSHs (sv_2mortal (newSViv (req->result)));
559	break;	285	break;
560		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
561	default:	292	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
563	break;	294	break;
564	}	295	}
565		296
566	errno = req->errorno;	297	errno = req->errorno;
567		298
568	PUTBACK;	299	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	301	SPAGAIN;
571		302
572	FREETMPS;	303	FREETMPS;
573	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
574	}	307	}
575		308
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	309	return !!SvTRUE (ERRSV);
591	}	310	}
592		311
593	static void req_destroy (aio_req req)	312	static void req_destroy (aio_req req)
594	{	313	{
595	if (req->self)	314	if (req->self)
…		…
600		319
601	SvREFCNT_dec (req->sv1);	320	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	321	SvREFCNT_dec (req->sv2);
603	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
604		323
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	324	Safefree (req);
609	}	325	}
610		326
611	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
612	{	328	{
613	aio_req sub;	329	aio_req sub;
614		330
615	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
616	return;	332	return;
617		333
618	SvREFCNT_dec (grp->sv2);	334	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	335	grp->sv2 = 0;
620		336
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}
624
625	static void req_cancel (aio_req req)
626	{
627	req->flags |= FLAG_CANCELLED;
628
629	req_cancel_subs (req);
630	}	338	}
631		339
632	#ifdef USE_SOCKETS_AS_HANDLES	340	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else	342	#else
635	# define TO_SOCKET(x) (x)	343	# define TO_SOCKET(x) (x)
636	#endif	344	#endif
637		345
638	static void	346	static void
639	create_pipe (int fd[2])	347	create_respipe (void)
640	{	348	{
		349	int old_readfd = respipe [0];
		350
		351	if (respipe [1] >= 0)
		352	respipe_close (TO_SOCKET (respipe [1]));
		353
		354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
		358	#endif
		359	croak ("unable to initialize result pipe");
		360
		361	if (old_readfd >= 0)
		362	{
		363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		364	croak ("unable to initialize result pipe(2)");
		365
		366	respipe_close (respipe [0]);
		367	respipe [0] = old_readfd;
		368	}
		369
641	#ifdef _WIN32	370	#ifdef _WIN32
642	int arg = 1;	371	int arg = 1;
643	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, fd)
644	|| ioctlsocket (TO_SOCKET (fd [0]), FIONBIO, &arg)	372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
645	|| ioctlsocket (TO_SOCKET (fd [1]), FIONBIO, &arg))	373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
646	#else	374	#else
647	if (pipe (fd)
648	|| fcntl (fd [0], F_SETFL, O_NONBLOCK)	375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
649	|| fcntl (fd [1], F_SETFL, O_NONBLOCK))	376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
650	#endif	377	#endif
651	croak ("unable to initialize result pipe");	378	croak ("unable to initialize result pipe(3)");
652		379
653	respipe_osf [0] = TO_SOCKET (respipe [0]);	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
654	respipe_osf [1] = TO_SOCKET (respipe [1]);	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
655	}	382	}
656		383
657	X_THREAD_PROC (aio_proc);
658
659	static void start_thread (void)
660	{
661	worker *wrk = calloc (1, sizeof (worker));
662
663	if (!wrk)
664	croak ("unable to allocate worker thread data");
665
666	X_LOCK (wrklock);
667
668	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
669	{
670	wrk->prev = &wrk_first;
671	wrk->next = wrk_first.next;
672	wrk_first.next->prev = wrk;
673	wrk_first.next = wrk;
674	++started;
675	}
676	else
677	free (wrk);
678
679	X_UNLOCK (wrklock);
680	}
681
682	static void maybe_start_thread ()
683	{
684	if (get_nthreads () >= wanted)
685	return;
686
687	/* todo: maybe use idle here, but might be less exact */
688	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
689	return;
690
691	start_thread ();
692	}
693
694	static void req_send (aio_req req)
695	{
696	block_sig ();
697
698	++nreqs;
699
700	X_LOCK (reqlock);
701	++nready;
702	reqq_push (&req_queue, req);
703	X_COND_SIGNAL (reqwait);
704	X_UNLOCK (reqlock);
705
706	unblock_sig ();
707
708	maybe_start_thread ();
709	}
710
711	static void end_thread (void)
712	{
713	aio_req req;
714
715	Newz (0, req, 1, aio_cb);
716
717	req->type = REQ_QUIT;
718	req->pri = PRI_MAX + PRI_BIAS;
719
720	X_LOCK (reqlock);
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	X_LOCK (wrklock);
726	--started;
727	X_UNLOCK (wrklock);
728	}
729
730	static void set_max_idle (int nthreads)
731	{
732	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
733	max_idle = nthreads <= 0 ? 1 : nthreads;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
735	}
736
737	static void min_parallel (int nthreads)
738	{
739	if (wanted < nthreads)
740	wanted = nthreads;
741	}
742
743	static void max_parallel (int nthreads)
744	{
745	if (wanted > nthreads)
746	wanted = nthreads;
747
748	while (started > wanted)
749	end_thread ();
750	}
751
752	static void poll_wait ()	384	static void poll_wait (void)
753	{	385	{
754	fd_set rfd;	386	fd_set rfd;
755		387
756	while (nreqs)	388	while (eio_nreqs ())
757	{	389	{
758	int size;	390	int size;
759	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	391
		392	X_LOCK (reslock);
760	size = res_queue.size;	393	size = res_queue.size;
761	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	394	X_UNLOCK (reslock);
762		395
763	if (size)	396	if (size)
764	return;	397	return;
765		398
766	maybe_start_thread ();	399	maybe_start_thread ();
…		…
770		403
771	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
772	}	405	}
773	}	406	}
774		407
775	static int poll_cb ()	408	static int poll_cb (void)
776	{	409	{
777	dSP;	410	int res = eio_poll ();
778	int count = 0;
779	int maxreqs = max_poll_reqs;
780	int do_croak = 0;
781	struct timeval tv_start, tv_now;
782	aio_req req;
783		411
784	if (max_poll_time)	412	if (res > 0)
785	gettimeofday (&tv_start, 0);	413	croak (0);
786
787	block_sig ();
788
789	for (;;)
790	{
791	for (;;)
792	{
793	maybe_start_thread ();
794
795	X_LOCK (reslock);
796	req = reqq_shift (&res_queue);
797
798	if (req)
799	{
800	--npending;
801
802	if (!res_queue.size)
803	{
804	/* read any signals sent by the worker threads */
805	char buf [4];
806	while (PerlSock_recv (respipe [0], buf, 4, 0) == 4)
807	;
808	}
809	}
810
811	X_UNLOCK (reslock);
812
813	if (!req)
814	break;
815
816	--nreqs;
817
818	if (req->type == REQ_GROUP && req->size)
819	{
820	req->int1 = 1; /* mark request as delayed */
821	continue;
822	}
823	else
824	{
825	if (!req_invoke (req))
826	{
827	req_destroy (req);
828	unblock_sig ();
829	croak (0);
830	}
831
832	count++;
833	}
834
835	req_destroy (req);
836
837	if (maxreqs && !--maxreqs)
838	break;
839
840	if (max_poll_time)
841	{
842	gettimeofday (&tv_now, 0);
843
844	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
845	break;
846	}
847	}
848
849	if (nreqs <= max_outstanding)
850	break;
851
852	poll_wait ();
853
854	++maxreqs;
855	}
856
857	unblock_sig ();
858	return count;
859	}
860
861	/*****************************************************************************/
862	/* work around various missing functions */
863
864	#if !HAVE_PREADWRITE
865	# define pread aio_pread
866	# define pwrite aio_pwrite
867
868	/*
869	* make our pread/pwrite safe against themselves, but not against
870	* normal read/write by using a mutex. slows down execution a lot,
871	* but that's your problem, not mine.
872	*/
873	static mutex_t preadwritelock = X_MUTEX_INIT;
874
875	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
876	{
877	ssize_t res;
878	off_t ooffset;
879
880	X_LOCK (preadwritelock);
881	ooffset = lseek (fd, 0, SEEK_CUR);
882	lseek (fd, offset, SEEK_SET);
883	res = read (fd, buf, count);
884	lseek (fd, ooffset, SEEK_SET);
885	X_UNLOCK (preadwritelock);
886		414
887	return res;	415	return res;
888	}
889
890	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
891	{
892	ssize_t res;
893	off_t ooffset;
894
895	X_LOCK (preadwritelock);
896	ooffset = lseek (fd, 0, SEEK_CUR);
897	lseek (fd, offset, SEEK_SET);
898	res = write (fd, buf, count);
899	lseek (fd, offset, SEEK_SET);
900	X_UNLOCK (preadwritelock);
901
902	return res;
903	}
904	#endif
905
906	#ifndef HAVE_FUTIMES
907
908	# define utimes(path,times) aio_utimes (path, times)
909	# define futimes(fd,times) aio_futimes (fd, times)
910
911	int aio_utimes (const char *filename, const struct timeval times[2])
912	{
913	if (times)
914	{
915	struct utimbuf buf;
916
917	buf.actime = times[0].tv_sec;
918	buf.modtime = times[1].tv_sec;
919
920	return utime (filename, &buf);
921	}
922	else
923	return utime (filename, 0);
924	}
925
926	int aio_futimes (int fd, const struct timeval tv[2])
927	{
928	errno = ENOSYS;
929	return -1;
930	}
931
932	#endif
933
934	#if !HAVE_FDATASYNC
935	# define fdatasync fsync
936	#endif
937
938	#if !HAVE_READAHEAD
939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
940
941	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
942	{
943	size_t todo = count;
944	dBUF;
945
946	while (todo > 0)
947	{
948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
949
950	pread (fd, aio_buf, len, offset);
951	offset += len;
952	todo -= len;
953	}
954
955	errno = 0;
956	return count;
957	}
958
959	#endif
960
961	#if !HAVE_READDIR_R
962	# define readdir_r aio_readdir_r
963
964	static mutex_t readdirlock = X_MUTEX_INIT;
965
966	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
967	{
968	X_DIRENT *e;
969	int errorno;
970
971	X_LOCK (readdirlock);
972
973	e = readdir (dirp);
974	errorno = errno;
975
976	if (e)
977	{
978	*res = ent;
979	strcpy (ent->d_name, e->d_name);
980	}
981	else
982	*res = 0;
983
984	X_UNLOCK (readdirlock);
985
986	errno = errorno;
987	return e ? 0 : -1;
988	}
989	#endif
990
991	/* sendfile always needs emulation */
992	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
993	{
994	ssize_t res;
995
996	if (!count)
997	return 0;
998
999	#if HAVE_SENDFILE
1000	# if __linux
1001	res = sendfile (ofd, ifd, &offset, count);
1002
1003	# elif __freebsd
1004	/*
1005	* Of course, the freebsd sendfile is a dire hack with no thoughts
1006	* wasted on making it similar to other I/O functions.
1007	*/
1008	{
1009	off_t sbytes;
1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1011
1012	if (res < 0 && sbytes)
1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1014	res = sbytes;
1015	}
1016
1017	# elif __hpux
1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
1019
1020	# elif __solaris
1021	{
1022	struct sendfilevec vec;
1023	size_t sbytes;
1024
1025	vec.sfv_fd = ifd;
1026	vec.sfv_flag = 0;
1027	vec.sfv_off = offset;
1028	vec.sfv_len = count;
1029
1030	res = sendfilev (ofd, &vec, 1, &sbytes);
1031
1032	if (res < 0 && sbytes)
1033	res = sbytes;
1034	}
1035
1036	# endif
1037	#else
1038	res = -1;
1039	errno = ENOSYS;
1040	#endif
1041
1042	if (res < 0
1043	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1044	#if __solaris
1045	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1046	#endif
1047	)
1048	)
1049	{
1050	/* emulate sendfile. this is a major pain in the ass */
1051	dBUF;
1052
1053	res = 0;
1054
1055	while (count)
1056	{
1057	ssize_t cnt;
1058
1059	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1060
1061	if (cnt <= 0)
1062	{
1063	if (cnt && !res) res = -1;
1064	break;
1065	}
1066
1067	cnt = write (ofd, aio_buf, cnt);
1068
1069	if (cnt <= 0)
1070	{
1071	if (cnt && !res) res = -1;
1072	break;
1073	}
1074
1075	offset += cnt;
1076	res += cnt;
1077	count -= cnt;
1078	}
1079	}
1080
1081	return res;
1082	}
1083
1084	/* read a full directory */
1085	static void scandir_ (aio_req req, worker *self)
1086	{
1087	DIR *dirp;
1088	union
1089	{
1090	X_DIRENT d;
1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1092	} *u;
1093	X_DIRENT *entp;
1094	char *name, *names;
1095	int memlen = 4096;
1096	int memofs = 0;
1097	int res = 0;
1098
1099	X_LOCK (wrklock);
1100	self->dirp = dirp = opendir (req->ptr1);
1101	self->dbuf = u = malloc (sizeof (*u));
1102	req->flags |= FLAG_PTR2_FREE;
1103	req->ptr2 = names = malloc (memlen);
1104	X_UNLOCK (wrklock);
1105
1106	if (dirp && u && names)
1107	for (;;)
1108	{
1109	errno = 0;
1110	readdir_r (dirp, &u->d, &entp);
1111
1112	if (!entp)
1113	break;
1114
1115	name = entp->d_name;
1116
1117	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1118	{
1119	int len = strlen (name) + 1;
1120
1121	res++;
1122
1123	while (memofs + len > memlen)
1124	{
1125	memlen *= 2;
1126	X_LOCK (wrklock);
1127	req->ptr2 = names = realloc (names, memlen);
1128	X_UNLOCK (wrklock);
1129
1130	if (!names)
1131	break;
1132	}
1133
1134	memcpy (names + memofs, name, len);
1135	memofs += len;
1136	}
1137	}
1138
1139	if (errno)
1140	res = -1;
1141
1142	req->result = res;
1143	}
1144
1145	/*****************************************************************************/
1146
1147	X_THREAD_PROC (aio_proc)
1148	{
1149	{//D
1150	aio_req req;
1151	struct timespec ts;
1152	worker *self = (worker *)thr_arg;
1153
1154	/* try to distribute timeouts somewhat randomly */
1155	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1156
1157	for (;;)
1158	{
1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1160
1161	X_LOCK (reqlock);
1162
1163	for (;;)
1164	{
1165	self->req = req = reqq_shift (&req_queue);
1166
1167	if (req)
1168	break;
1169
1170	++idle;
1171
1172	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1173	== ETIMEDOUT)
1174	{
1175	if (idle > max_idle)
1176	{
1177	--idle;
1178	X_UNLOCK (reqlock);
1179	X_LOCK (wrklock);
1180	--started;
1181	X_UNLOCK (wrklock);
1182	goto quit;
1183	}
1184
1185	/* we are allowed to idle, so do so without any timeout */
1186	X_COND_WAIT (reqwait, reqlock);
1187	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1188	}
1189
1190	--idle;
1191	}
1192
1193	--nready;
1194
1195	X_UNLOCK (reqlock);
1196
1197	errno = 0; /* strictly unnecessary */
1198
1199	if (!(req->flags & FLAG_CANCELLED))
1200	switch (req->type)
1201	{
1202	case REQ_READ: req->result = req->offs >= 0
1203	? pread (req->int1, req->ptr1, req->size, req->offs)
1204	: read (req->int1, req->ptr1, req->size); break;
1205	case REQ_WRITE: req->result = req->offs >= 0
1206	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1207	: write (req->int1, req->ptr1, req->size); break;
1208
1209	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1210	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1211
1212	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1213	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1214	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1215
1216	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1217	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1218	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1219	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1220	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1221	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1222
1223	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1224	case REQ_CLOSE: req->result = close (req->int1); break;
1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1226	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1227	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1230	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1231	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1232	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1233
1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
1236	case REQ_READDIR: scandir_ (req, self); break;
1237
1238	case REQ_BUSY:
1239	#ifdef _WIN32
1240	Sleep (req->nv1 * 1000.);
1241	#else
1242	{
1243	struct timeval tv;
1244
1245	tv.tv_sec = req->nv1;
1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1247
1248	req->result = select (0, 0, 0, 0, &tv);
1249	}
1250	#endif
1251	break;
1252
1253	case REQ_UTIME:
1254	case REQ_FUTIME:
1255	{
1256	struct timeval tv[2];
1257	struct timeval *times;
1258
1259	if (req->nv1 != -1. || req->nv2 != -1.)
1260	{
1261	tv[0].tv_sec = req->nv1;
1262	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1263	tv[1].tv_sec = req->nv2;
1264	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1265
1266	times = tv;
1267	}
1268	else
1269	times = 0;
1270
1271
1272	req->result = req->type == REQ_FUTIME
1273	? futimes (req->int1, times)
1274	: utimes (req->ptr1, times);
1275	}
1276
1277	case REQ_GROUP:
1278	case REQ_NOP:
1279	break;
1280
1281	case REQ_QUIT:
1282	goto quit;
1283
1284	default:
1285	req->result = -1;
1286	break;
1287	}
1288
1289	req->errorno = errno;
1290
1291	X_LOCK (reslock);
1292
1293	++npending;
1294
1295	if (!reqq_push (&res_queue, req))
1296	{
1297	/* write a dummy byte to the pipe so fh becomes ready */
1298	send (respipe_osf [1], (const void *)&respipe_osf, 1, 0);
1299
1300	/* optionally signal the main thread asynchronously */
1301	if (main_sig)
1302	pthread_kill (main_tid, main_sig);
1303	}
1304
1305	self->req = 0;
1306	worker_clear (self);
1307
1308	X_UNLOCK (reslock);
1309	}
1310
1311	quit:
1312	X_LOCK (wrklock);
1313	worker_free (self);
1314	X_UNLOCK (wrklock);
1315
1316	return 0;
1317	}//D
1318	}
1319
1320	/*****************************************************************************/
1321
1322	static void atfork_prepare (void)
1323	{
1324	X_LOCK (wrklock);
1325	X_LOCK (reqlock);
1326	X_LOCK (reslock);
1327	#if !HAVE_PREADWRITE
1328	X_LOCK (preadwritelock);
1329	#endif
1330	#if !HAVE_READDIR_R
1331	X_LOCK (readdirlock);
1332	#endif
1333	}
1334
1335	static void atfork_parent (void)
1336	{
1337	#if !HAVE_READDIR_R
1338	X_UNLOCK (readdirlock);
1339	#endif
1340	#if !HAVE_PREADWRITE
1341	X_UNLOCK (preadwritelock);
1342	#endif
1343	X_UNLOCK (reslock);
1344	X_UNLOCK (reqlock);
1345	X_UNLOCK (wrklock);
1346	}
1347
1348	static void atfork_child (void)
1349	{
1350	aio_req prv;
1351
1352	while (prv = reqq_shift (&req_queue))
1353	req_destroy (prv);
1354
1355	while (prv = reqq_shift (&res_queue))
1356	req_destroy (prv);
1357
1358	while (wrk_first.next != &wrk_first)
1359	{
1360	worker *wrk = wrk_first.next;
1361
1362	if (wrk->req)
1363	req_destroy (wrk->req);
1364
1365	worker_clear (wrk);
1366	worker_free (wrk);
1367	}
1368
1369	started = 0;
1370	idle = 0;
1371	nreqs = 0;
1372	nready = 0;
1373	npending = 0;
1374
1375	PerlSock_closesocket (respipe [0]);
1376	PerlSock_closesocket (respipe [1]);
1377
1378	create_pipe (respipe);
1379
1380	atfork_parent ();
1381	}	416	}
1382		417
1383	#define dREQ \	418	#define dREQ \
1384	aio_req req; \	419	aio_req req; \
1385	int req_pri = next_pri; \	420	int req_pri = next_pri; \
1386	next_pri = DEFAULT_PRI + PRI_BIAS; \	421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1387	\	422	\
1388	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
1389	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
1390	\	425	\
1391	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
1392	if (!req) \	427	if (!req) \
1393	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
1394	\	429	\
1395	req->callback = newSVsv (callback); \	430	req->callback = newSVsv (callback); \
1396	req->pri = req_pri	431	req->pri = req_pri
1397		432
1398	#define REQ_SEND \	433	#define REQ_SEND \
1399	req_send (req); \	434	eio_submit (req); \
1400	\	435	\
1401	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
1402	XPUSHs (req_sv (req, AIO_REQ_KLASS));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1403		438
1404	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
1405		440
1406	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
1407		442
1408	BOOT:	443	BOOT:
1409	{	444	{
1410	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
1411		446
1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1414	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1415	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
…		…
1423	X_MUTEX_CHECK (readdirlock);	458	X_MUTEX_CHECK (readdirlock);
1424		459
1425	X_COND_CHECK (reqwait);	460	X_COND_CHECK (reqwait);
1426	#else	461	#else
1427	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1428	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1429	#endif	463	#endif
1430		464
1431	create_pipe (respipe);	465	create_respipe ();
1432		466
1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
1434	}	469	}
1435		470
1436	void	471	void
1437	max_poll_reqs (int nreqs)	472	max_poll_reqs (int nreqs)
1438	PROTOTYPE: $	473	PROTOTYPE: $
1439	CODE:	474	CODE:
1440	max_poll_reqs = nreqs;	475	eio_set_max_poll_reqs (nreqs);
1441		476
1442	void	477	void
1443	max_poll_time (double nseconds)	478	max_poll_time (double nseconds)
1444	PROTOTYPE: $	479	PROTOTYPE: $
1445	CODE:	480	CODE:
1446	max_poll_time = nseconds * AIO_TICKS;	481	eio_set_max_poll_time (nseconds);
1447		482
1448	void	483	void
1449	min_parallel (int nthreads)	484	min_parallel (int nthreads)
1450	PROTOTYPE: $	485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
1451		488
1452	void	489	void
1453	max_parallel (int nthreads)	490	max_parallel (int nthreads)
1454	PROTOTYPE: $	491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
1455		494
1456	void	495	void
1457	max_idle (int nthreads)	496	max_idle (int nthreads)
1458	PROTOTYPE: $	497	PROTOTYPE: $
1459	CODE:	498	CODE:
1460	set_max_idle (nthreads);	499	eio_set_max_idle (nthreads);
1461		500
1462	int	501	void
1463	max_outstanding (int maxreqs)	502	max_outstanding (int maxreqs)
1464	PROTOTYPE: $	503	PROTOTYPE: $
1465	CODE:	504	CODE:
1466	RETVAL = max_outstanding;
1467	max_outstanding = maxreqs;	505	max_outstanding = maxreqs;
1468	OUTPUT:
1469	RETVAL
1470		506
1471	void	507	void
1472	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1473	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
1474	PPCODE:	510	PPCODE:
1475	{	511	{
1476	dREQ;	512	dREQ;
1477		513
1478	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
1479	req->sv1 = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
1480	req->ptr1 = SvPVbyte_nolen (req->sv1);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
1481	req->int1 = flags;	517	req->int1 = flags;
1482	req->mode = mode;	518	req->int2 = mode;
1483		519
1484	REQ_SEND;	520	REQ_SEND;
1485	}	521	}
1486		522
1487	void	523	void
1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1489	PROTOTYPE: $;$	525	PROTOTYPE: $;$
1490	ALIAS:	526	ALIAS:
1491	aio_close = REQ_CLOSE
1492	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
1493	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
1494	PPCODE:	529	PPCODE:
1495	{	530	{
1496	dREQ;	531	dREQ;
1497		532
1498	req->type = ix;	533	req->type = ix;
…		…
1501		536
1502	REQ_SEND (req);	537	REQ_SEND (req);
1503	}	538	}
1504		539
1505	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
1506	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1507	ALIAS:	570	ALIAS:
1508	aio_read = REQ_READ	571	aio_read = EIO_READ
1509	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
1510	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
1511	PPCODE:	574	PPCODE:
1512	{	575	{
1513	STRLEN svlen;	576	STRLEN svlen;
1514	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
…		…
1521	dataoffset += svlen;	584	dataoffset += svlen;
1522		585
1523	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
1524	croak ("dataoffset outside of data scalar");	587	croak ("dataoffset outside of data scalar");
1525		588
1526	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
1527	{	590	{
1528	/* write: check length and adjust. */	591	/* write: check length and adjust. */
1529	if (!SvOK (length) || len + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
1530	len = svlen - dataoffset;	593	len = svlen - dataoffset;
1531	}	594	}
…		…
1541	{	604	{
1542	dREQ;	605	dREQ;
1543		606
1544	req->type = ix;	607	req->type = ix;
1545	req->sv1 = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1547	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1549	req->size = len;	612	req->size = len;
1550	req->sv2 = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
1551	req->ptr1 = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
1552	req->stroffset = dataoffset;	615	req->stroffset = dataoffset;
1553		616
1554	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
1555	{	618	{
1556	SvREADONLY_on (data);	619	SvREADONLY_on (data);
…		…
1570	dREQ;	633	dREQ;
1571		634
1572	data = newSV (NAME_MAX);	635	data = newSV (NAME_MAX);
1573	SvPOK_on (data);	636	SvPOK_on (data);
1574		637
1575	req->type = REQ_READLINK;	638	req->type = EIO_READLINK;
1576	req->sv1 = newSVsv (path);	639	req->sv1 = newSVsv (path);
1577	req->ptr2 = SvPVbyte_nolen (req->sv1);	640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1578	req->sv2 = data;	641	req->sv2 = data;
1579	req->ptr1 = SvPVbyte_nolen (data);	642	req->ptr2 = SvPVbyte_nolen (data);
1580		643
1581	REQ_SEND;	644	REQ_SEND;
1582	}	645	}
1583		646
1584	void	647	void
…		…
1586	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
1587	PPCODE:	650	PPCODE:
1588	{	651	{
1589	dREQ;	652	dREQ;
1590		653
1591	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1592	req->sv1 = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1594	req->sv2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1596	req->offs = SvVAL64 (in_offset);	659	req->offs = SvVAL64 (in_offset);
…		…
1604	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1605	PPCODE:	668	PPCODE:
1606	{	669	{
1607	dREQ;	670	dREQ;
1608		671
1609	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1610	req->sv1 = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1612	req->offs = SvVAL64 (offset);	675	req->offs = SvVAL64 (offset);
1613	req->size = length;	676	req->size = length;
1614		677
…		…
1616	}	679	}
1617		680
1618	void	681	void
1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1620	ALIAS:	683	ALIAS:
1621	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1622	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1623	PPCODE:	686	PPCODE:
1624	{	687	{
1625	dREQ;	688	dREQ;
1626		689
1627	req->ptr2 = malloc (sizeof (Stat_t));	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1628	if (!req->ptr2)	691	if (!req->ptr2)
1629	{	692	{
1630	req_destroy (req);	693	req_destroy (req);
1631	croak ("out of memory during aio_stat statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1632	}	695	}
1633		696
1634	req->flags |= FLAG_PTR2_FREE;	697	req->flags |= EIO_FLAG_PTR2_FREE;
1635	req->sv1 = newSVsv (fh_or_path);	698	req->sv1 = newSVsv (fh_or_path);
1636		699
1637	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1638	{	701	{
1639	req->type = ix;	702	req->type = ix;
1640	req->ptr1 = SvPVbyte_nolen (req->sv1);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1641	}	704	}
1642	else	705	else
1643	{	706	{
1644	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1646	}	709	}
1647		710
1648	REQ_SEND;	711	REQ_SEND;
1649	}	712	}
…		…
1658	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1659	req->sv1 = newSVsv (fh_or_path);	722	req->sv1 = newSVsv (fh_or_path);
1660		723
1661	if (SvPOK (fh_or_path))	724	if (SvPOK (fh_or_path))
1662	{	725	{
1663	req->type = REQ_UTIME;	726	req->type = EIO_UTIME;
1664	req->ptr1 = SvPVbyte_nolen (req->sv1);	727	req->ptr1 = SvPVbyte_nolen (req->sv1);
1665	}	728	}
1666	else	729	else
1667	{	730	{
1668	req->type = REQ_FUTIME;	731	req->type = EIO_FUTIME;
1669	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1670	}	733	}
1671		734
1672	REQ_SEND;	735	REQ_SEND;
1673	}	736	}
…		…
1681	req->sv1 = newSVsv (fh_or_path);	744	req->sv1 = newSVsv (fh_or_path);
1682	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1683		746
1684	if (SvPOK (fh_or_path))	747	if (SvPOK (fh_or_path))
1685	{	748	{
1686	req->type = REQ_TRUNCATE;	749	req->type = EIO_TRUNCATE;
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);	750	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688	}	751	}
1689	else	752	else
1690	{	753	{
1691	req->type = REQ_FTRUNCATE;	754	req->type = EIO_FTRUNCATE;
1692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1693	}	756	}
1694		757
1695	REQ_SEND;	758	REQ_SEND;
1696	}	759	}
1697		760
1698	void	761	void
1699	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
1700	PPCODE:	767	PPCODE:
1701	{	768	{
1702	dREQ;	769	dREQ;
1703		770
		771	req->type = ix;
1704	req->mode = mode;	772	req->int2 = mode;
1705	req->sv1 = newSVsv (fh_or_path);	773	req->sv1 = newSVsv (fh_or_path);
1706		774
1707	if (SvPOK (fh_or_path))	775	if (ix == EIO_FCHMOD)
1708	{	776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	req->type = REQ_CHMOD;
1710	req->ptr1 = SvPVbyte_nolen (req->sv1);
1711	}
1712	else	777	else
1713	{	778	req->ptr1 = SvPVbyte_nolen (req->sv1);
1714	req->type = REQ_FCHMOD;
1715	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1716	}
1717		779
1718	REQ_SEND;	780	REQ_SEND;
1719	}	781	}
1720		782
1721	void	783	void
…		…
1728	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1729	req->sv1 = newSVsv (fh_or_path);	791	req->sv1 = newSVsv (fh_or_path);
1730		792
1731	if (SvPOK (fh_or_path))	793	if (SvPOK (fh_or_path))
1732	{	794	{
1733	req->type = REQ_CHOWN;	795	req->type = EIO_CHOWN;
1734	req->ptr1 = SvPVbyte_nolen (req->sv1);	796	req->ptr1 = SvPVbyte_nolen (req->sv1);
1735	}	797	}
1736	else	798	else
1737	{	799	{
1738	req->type = REQ_FCHOWN;	800	req->type = EIO_FCHOWN;
1739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1740	}	802	}
1741		803
1742	REQ_SEND;	804	REQ_SEND;
1743	}	805	}
1744		806
1745	void	807	void
1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1747	ALIAS:	809	ALIAS:
1748	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1749	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1750	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1751	PPCODE:	813	PPCODE:
1752	{	814	{
1753	dREQ;	815	dREQ;
1754		816
1755	req->type = ix;	817	req->type = ix;
…		…
1758		820
1759	REQ_SEND;	821	REQ_SEND;
1760	}	822	}
1761		823
1762	void	824	void
1763	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
1764	PPCODE:	830	PPCODE:
1765	{	831	{
1766	dREQ;	832	dREQ;
1767		833
		834	req->type = ix;
		835	req->sv1 = newSVsv (oldpath);
		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
		837	req->sv2 = newSVsv (newpath);
		838	req->ptr2 = SvPVbyte_nolen (req->sv2);
		839
		840	REQ_SEND;
		841	}
		842
		843	void
		844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		845	PPCODE:
		846	{
		847	dREQ;
		848
1768	req->type = REQ_MKDIR;	849	req->type = EIO_MKNOD;
1769	req->sv1 = newSVsv (pathname);	850	req->sv1 = newSVsv (pathname);
1770	req->ptr1 = SvPVbyte_nolen (req->sv1);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1771	req->mode = mode;
1772
1773	REQ_SEND;
1774	}
1775
1776	void
1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1778	ALIAS:
1779	aio_link = REQ_LINK
1780	aio_symlink = REQ_SYMLINK
1781	aio_rename = REQ_RENAME
1782	PPCODE:
1783	{
1784	dREQ;
1785
1786	req->type = ix;
1787	req->sv2 = newSVsv (oldpath);
1788	req->ptr2 = SvPVbyte_nolen (req->sv2);
1789	req->sv1 = newSVsv (newpath);
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791
1792	REQ_SEND;
1793	}
1794
1795	void
1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1797	PPCODE:
1798	{
1799	dREQ;
1800
1801	req->type = REQ_MKNOD;
1802	req->sv1 = newSVsv (pathname);
1803	req->ptr1 = SvPVbyte_nolen (req->sv1);
1804	req->mode = (mode_t)mode;	852	req->int2 = (mode_t)mode;
1805	req->offs = dev;	853	req->offs = dev;
1806		854
1807	REQ_SEND;	855	REQ_SEND;
1808	}	856	}
1809		857
…		…
1811	aio_busy (double delay, SV *callback=&PL_sv_undef)	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
1812	PPCODE:	860	PPCODE:
1813	{	861	{
1814	dREQ;	862	dREQ;
1815		863
1816	req->type = REQ_BUSY;	864	req->type = EIO_BUSY;
1817	req->nv1 = delay < 0. ? 0. : delay;	865	req->nv1 = delay < 0. ? 0. : delay;
1818		866
1819	REQ_SEND;	867	REQ_SEND;
1820	}	868	}
1821		869
…		…
1824	PROTOTYPE: ;$	872	PROTOTYPE: ;$
1825	PPCODE:	873	PPCODE:
1826	{	874	{
1827	dREQ;	875	dREQ;
1828		876
1829	req->type = REQ_GROUP;	877	req->type = EIO_GROUP;
1830		878
1831	req_send (req);	879	eio_submit (req);
1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1833	}	881	}
1834		882
1835	void	883	void
1836	aio_nop (SV *callback=&PL_sv_undef)	884	aio_nop (SV *callback=&PL_sv_undef)
		885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
1837	PPCODE:	888	PPCODE:
1838	{	889	{
1839	dREQ;	890	dREQ;
1840		891
1841	req->type = REQ_NOP;	892	req->type = ix;
1842		893
1843	REQ_SEND;	894	REQ_SEND;
1844	}	895	}
1845		896
1846	int	897	int
1847	aioreq_pri (int pri = 0)	898	aioreq_pri (int pri = 0)
1848	PROTOTYPE: ;$	899	PROTOTYPE: ;$
1849	CODE:	900	CODE:
1850	RETVAL = next_pri - PRI_BIAS;	901	RETVAL = next_pri - EIO_PRI_BIAS;
1851	if (items > 0)	902	if (items > 0)
1852	{	903	{
1853	if (pri < PRI_MIN) pri = PRI_MIN;	904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1854	if (pri > PRI_MAX) pri = PRI_MAX;	905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1855	next_pri = pri + PRI_BIAS;	906	next_pri = pri + EIO_PRI_BIAS;
1856	}	907	}
1857	OUTPUT:	908	OUTPUT:
1858	RETVAL	909	RETVAL
1859		910
1860	void	911	void
1861	aioreq_nice (int nice = 0)	912	aioreq_nice (int nice = 0)
1862	CODE:	913	CODE:
1863	nice = next_pri - nice;	914	nice = next_pri - nice;
1864	if (nice < PRI_MIN) nice = PRI_MIN;	915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1865	if (nice > PRI_MAX) nice = PRI_MAX;	916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1866	next_pri = nice + PRI_BIAS;	917	next_pri = nice + EIO_PRI_BIAS;
1867		918
1868	void	919	void
1869	flush ()	920	flush ()
1870	PROTOTYPE:	921	PROTOTYPE:
1871	CODE:	922	CODE:
…		…
1904	poll_wait()	955	poll_wait()
1905	PROTOTYPE:	956	PROTOTYPE:
1906	CODE:	957	CODE:
1907	poll_wait ();	958	poll_wait ();
1908		959
1909	void
1910	setsig (int signum = SIGIO)
1911	PROTOTYPE: ;$
1912	CODE:
1913	{
1914	if (block_sig_level)
1915	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1916
1917	X_LOCK (reslock);
1918	main_tid = pthread_self ();
1919	main_sig = signum;
1920	X_UNLOCK (reslock);
1921
1922	if (main_sig && npending)
1923	pthread_kill (main_tid, main_sig);
1924	}
1925
1926	void
1927	aio_block (SV *cb)
1928	PROTOTYPE: &
1929	PPCODE:
1930	{
1931	int count;
1932
1933	block_sig ();
1934	PUSHMARK (SP);
1935	PUTBACK;
1936	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1937	SPAGAIN;
1938	unblock_sig ();
1939
1940	if (SvTRUE (ERRSV))
1941	croak (0);
1942
1943	XSRETURN (count);
1944	}
1945
1946	int	960	int
1947	nreqs()	961	nreqs()
1948	PROTOTYPE:	962	PROTOTYPE:
1949	CODE:	963	CODE:
1950	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1951	OUTPUT:	965	OUTPUT:
1952	RETVAL	966	RETVAL
1953		967
1954	int	968	int
1955	nready()	969	nready()
1956	PROTOTYPE:	970	PROTOTYPE:
1957	CODE:	971	CODE:
1958	RETVAL = get_nready ();	972	RETVAL = eio_nready ();
1959	OUTPUT:	973	OUTPUT:
1960	RETVAL	974	RETVAL
1961		975
1962	int	976	int
1963	npending()	977	npending()
1964	PROTOTYPE:	978	PROTOTYPE:
1965	CODE:	979	CODE:
1966	RETVAL = get_npending ();	980	RETVAL = eio_npending ();
1967	OUTPUT:	981	OUTPUT:
1968	RETVAL	982	RETVAL
1969		983
1970	int	984	int
1971	nthreads()	985	nthreads()
…		…
1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1983		997
1984	void	998	void
1985	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1986	CODE:	1000	CODE:
1987	req_cancel (req);	1001	eio_cancel (req);
1988		1002
1989	void	1003	void
1990	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1991	CODE:	1005	CODE:
1992	SvREFCNT_dec (req->callback);	1006	SvREFCNT_dec (req->callback);
…		…
1997	void	1011	void
1998	add (aio_req grp, ...)	1012	add (aio_req grp, ...)
1999	PPCODE:	1013	PPCODE:
2000	{	1014	{
2001	int i;	1015	int i;
2002	aio_req req;
2003
2004	if (main_sig && !block_sig_level)
2005	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2006		1016
2007	if (grp->int1 == 2)	1017	if (grp->int1 == 2)
2008	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2009		1019
2010	for (i = 1; i < items; ++i )	1020	for (i = 1; i < items; ++i )
2011	{	1021	{
		1022	aio_req req;
		1023
2012	if (GIMME_V != G_VOID)	1024	if (GIMME_V != G_VOID)
2013	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2014		1026
2015	req = SvAIO_REQ (ST (i));	1027	req = SvAIO_REQ (ST (i));
2016		1028
2017	if (req)	1029	if (req)
2018	{	1030	eio_grp_add (grp, req);
2019	++grp->size;
2020	req->grp = grp;
2021
2022	req->grp_prev = 0;
2023	req->grp_next = grp->grp_first;
2024
2025	if (grp->grp_first)
2026	grp->grp_first->grp_prev = req;
2027
2028	grp->grp_first = req;
2029	}
2030	}	1031	}
2031	}	1032	}
2032		1033
2033	void	1034	void
2034	cancel_subs (aio_req_ornot req)	1035	cancel_subs (aio_req_ornot req)
…		…
2059	grp->errorno = errorno;	1060	grp->errorno = errorno;
2060		1061
2061	void	1062	void
2062	limit (aio_req grp, int limit)	1063	limit (aio_req grp, int limit)
2063	CODE:	1064	CODE:
2064	grp->int2 = limit;	1065	eio_grp_limit (grp, limit);
2065	aio_grp_feed (grp);
2066		1066
2067	void	1067	void
2068	feed (aio_req grp, SV *callback=&PL_sv_undef)	1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
2069	CODE:	1069	CODE:
2070	{	1070	{
…		…
2072	grp->sv2 = newSVsv (callback);	1072	grp->sv2 = newSVsv (callback);
2073		1073
2074	if (grp->int2 <= 0)	1074	if (grp->int2 <= 0)
2075	grp->int2 = 2;	1075	grp->int2 = 2;
2076		1076
2077	aio_grp_feed (grp);	1077	eio_grp_limit (grp, grp->int2);
2078	}	1078	}
2079		1079

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