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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC vs.
Revision 1.121 by root, Tue May 13 18:50:27 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"
…		…
13	#include <sys/stat.h>	13	#include <sys/stat.h>
14	#include <limits.h>	14	#include <limits.h>
15	#include <fcntl.h>	15	#include <fcntl.h>
16	#include <sched.h>	16	#include <sched.h>
17		17
		18	/* perl namespace pollution */
		19	#undef VERSION
		20
18	#ifdef _WIN32	21	#ifdef _WIN32
19		22
20	# define SIGIO 0	23	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	24	# undef malloc
23	#undef free	25	# undef free
24		26
25	// perl overrides all those nice win32 functions	27	// perl overrides all those nice win32 functions
26	# undef open	28	# undef open
27	# undef read	29	# undef read
28	# undef write	30	# undef write
		31	# undef send
		32	# undef recv
29	# undef stat	33	# undef stat
30	# undef fstat	34	# undef fstat
31	# define lstat stat	35	# define lstat stat
32	# undef truncate	36	# undef truncate
33	# undef ftruncate	37	# undef ftruncate
…		…
52	# define closedir(fd) (errno = ENOSYS, -1)	56	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)	57	# define mkdir(a,b) mkdir (a)
54		58
55	#else	59	#else
56		60
57	# include "autoconf/config.h"
58	# include <sys/time.h>	61	# include <sys/time.h>
59	# include <sys/select.h>	62	# include <sys/select.h>
60	# include <unistd.h>	63	# include <unistd.h>
61	# include <utime.h>	64	# include <utime.h>
62	# include <signal.h>	65	# include <signal.h>
63	typedef struct dirent X_DIRENT;	66	# define EIO_STRUCT_DIRENT struct dirent
64		67
65	#endif	68	#endif
66		69
67	#if HAVE_SENDFILE	70	#define EIO_STRUCT_STAT Stat_t
68	# if __linux
69	# include <sys/sendfile.h>
70	# elif __freebsd
71	# include <sys/socket.h>
72	# include <sys/uio.h>
73	# elif __hpux
74	# include <sys/socket.h>
75	# elif __solaris /* not yet */
76	# include <sys/sendfile.h>
77	# else
78	# error sendfile support requested but not available
79	# endif
80	#endif
81
82	/* number of seconds after which idle threads exit */
83	#define IDLE_TIMEOUT 10
84
85	/* used for struct dirent, AIX doesn't provide it */
86	#ifndef NAME_MAX
87	# define NAME_MAX 4096
88	#endif
89
90	/* buffer size for various temporary buffers */
91	#define AIO_BUFSIZE 65536
92		71
93	/* use NV for 32 bit perls as it allows larger offsets */	72	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8	73	#if IVSIZE >= 8
95	# define SvVAL64 SvIV	74	# define SvVAL64 SvIV
96	#else	75	#else
97	# define SvVAL64 SvNV	76	# define SvVAL64 SvNV
98	#endif	77	#endif
99		78
100	#define dBUF \	79	static HV *stash;
101	char *aio_buf; \
102	X_LOCK (wrklock); \
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
104	X_UNLOCK (wrklock); \
105	if (!aio_buf) \
106	return -1;
107
108	typedef SV SV8; /* byte-sv, used for argument-checking */	80	typedef SV SV8; /* byte-sv, used for argument-checking */
109
110	enum {
111	REQ_QUIT,
112	REQ_OPEN, REQ_CLOSE,
113	REQ_READ, REQ_WRITE,
114	REQ_READAHEAD, REQ_SENDFILE,
115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
116	REQ_TRUNCATE, REQ_FTRUNCATE,
117	REQ_UTIME, REQ_FUTIME,
118	REQ_CHMOD, REQ_FCHMOD,
119	REQ_CHOWN, REQ_FCHOWN,
120	REQ_FSYNC, REQ_FDATASYNC,
121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
122	REQ_MKNOD, REQ_READDIR,
123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
124	REQ_GROUP, REQ_NOP,
125	REQ_BUSY,
126	};
127		81
128	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
130		84
131	typedef struct aio_cb	85	#define EIO_REQ_MEMBERS \
132	{
133	struct aio_cb *volatile next;
134
135	SV *callback;	86	SV *callback; \
136	SV *sv1, *sv2;	87	SV *sv1, *sv2; \
137	void *ptr1, *ptr2;
138	off_t offs;
139	size_t size;
140	ssize_t result;
141	double nv1, nv2;
142
143	STRLEN stroffset;	88	STRLEN stroffset; \
144	int type;	89	SV *self;
145	int int1, int2, int3;
146	int errorno;
147	mode_t mode; /* open */
148		90
149	unsigned char flags;	91	#include "libeio/eio.h"
150	unsigned char pri;
151		92
152	SV *self; /* the perl counterpart of this request, if any */	93	static int req_invoke (eio_req *req);
153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94	#define EIO_FINISH(req) req_invoke (req)
154	} aio_cb;	95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
155		99
156	enum {	100	enum {
157	FLAG_CANCELLED = 0x01, /* request was cancelled */
158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
160	};	102	};
161		103
		104	#include "libeio/eio.c"
		105
162	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
163	typedef aio_cb *aio_req_ornot;	107	typedef eio_req *aio_req_ornot;
164		108
165	enum {	109	static SV *on_next_submit;
166	PRI_MIN = -4,	110	static int next_pri = EIO_PRI_DEFAULT;
167	PRI_MAX = 4,	111	static int max_outstanding;
168		112
169	DEFAULT_PRI = 0,	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173		114
174	#define AIO_TICKS ((1000000 + 1023) >> 10)
175
176	static unsigned int max_poll_time = 0;
177	static unsigned int max_poll_reqs = 0;
178
179	/* calculcate time difference in ~1/AIO_TICKS of a second */
180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
181	{
182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
184	}
185
186	static thread_t main_tid;
187	static int main_sig;
188	static int block_sig_level;
189
190	void block_sig ()
191	{
192	sigset_t ss;
193
194	if (block_sig_level++)
195	return;
196
197	if (!main_sig)
198	return;
199
200	sigemptyset (&ss);
201	sigaddset (&ss, main_sig);
202	pthread_sigmask (SIG_BLOCK, &ss, 0);
203	}
204
205	void unblock_sig ()
206	{
207	sigset_t ss;
208
209	if (--block_sig_level)
210	return;
211
212	if (!main_sig)
213	return;
214
215	sigemptyset (&ss);
216	sigaddset (&ss, main_sig);
217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
218	}
219
220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
221
222	static unsigned int started, idle, wanted;
223
224	/* worker threads management */
225	static mutex_t wrklock = X_MUTEX_INIT;
226
227	typedef struct worker {
228	/* locked by wrklock */
229	struct worker *prev, *next;
230
231	thread_t tid;
232
233	/* locked by reslock, reqlock or wrklock */
234	aio_req req; /* currently processed request */
235	void *dbuf;
236	DIR *dirp;
237	} worker;
238
239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
240
241	static void worker_clear (worker *wrk)
242	{
243	if (wrk->dirp)
244	{
245	closedir (wrk->dirp);
246	wrk->dirp = 0;
247	}
248
249	if (wrk->dbuf)
250	{
251	free (wrk->dbuf);
252	wrk->dbuf = 0;
253	}
254	}
255
256	static void worker_free (worker *wrk)
257	{
258	wrk->next->prev = wrk->prev;
259	wrk->prev->next = wrk->next;
260
261	free (wrk);
262	}
263
264	static volatile unsigned int nreqs, nready, npending;
265	static volatile unsigned int max_idle = 4;
266	static volatile unsigned int max_outstanding = 0xffffffff;
267	static int respipe [2];
268
269	static mutex_t reslock = X_MUTEX_INIT;
270	static mutex_t reqlock = X_MUTEX_INIT;
271	static cond_t reqwait = X_COND_INIT;
272
273	#if WORDACCESS_UNSAFE
274
275	static unsigned int get_nready ()
276	{
277	unsigned int retval;
278
279	X_LOCK (reqlock);
280	retval = nready;
281	X_UNLOCK (reqlock);
282
283	return retval;
284	}
285
286	static unsigned int get_npending ()
287	{
288	unsigned int retval;
289
290	X_LOCK (reslock);
291	retval = npending;
292	X_UNLOCK (reslock);
293
294	return retval;
295	}
296
297	static unsigned int get_nthreads ()
298	{
299	unsigned int retval;
300
301	X_LOCK (wrklock);
302	retval = started;
303	X_UNLOCK (wrklock);
304
305	return retval;
306	}
307
308	#else
309
310	# define get_nready() nready
311	# define get_npending() npending
312	# define get_nthreads() started
313
314	#endif
315
316	/*
317	* a somewhat faster data structure might be nice, but
318	* with 8 priorities this actually needs <20 insns
319	* per shift, the most expensive operation.
320	*/
321	typedef struct {
322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
323	int size;
324	} reqq;
325
326	static reqq req_queue;
327	static reqq res_queue;
328
329	int reqq_push (reqq *q, aio_req req)
330	{
331	int pri = req->pri;
332	req->next = 0;
333
334	if (q->qe[pri])
335	{
336	q->qe[pri]->next = req;
337	q->qe[pri] = req;
338	}
339	else
340	q->qe[pri] = q->qs[pri] = req;
341
342	return q->size++;
343	}
344
345	aio_req reqq_shift (reqq *q)
346	{
347	int pri;
348
349	if (!q->size)
350	return 0;
351
352	--q->size;
353
354	for (pri = NUM_PRI; pri--; )
355	{
356	aio_req req = q->qs[pri];
357
358	if (req)
359	{
360	if (!(q->qs[pri] = req->next))
361	q->qe[pri] = 0;
362
363	return req;
364	}
365	}
366
367	abort ();
368	}
369
370	static int poll_cb ();
371	static int req_invoke (aio_req req);
372	static void req_destroy (aio_req req);	115	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	116	static void req_cancel (aio_req req);
		117
		118	static void want_poll (void)
		119	{
		120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
374		131
375	/* must be called at most once */	132	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	133	static SV *req_sv (aio_req req, const char *klass)
377	{	134	{
378	if (!req->self)	135	if (!req->self)
…		…
396	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	154	}
398		155
399	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
400	{	157	{
401	block_sig ();	158	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	159	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	160	dSP;
410		161
411	ENTER;	162	ENTER;
412	SAVETMPS;	163	SAVETMPS;
413	PUSHMARK (SP);	164	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
415	PUTBACK;	166	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	168	SPAGAIN;
418	FREETMPS;	169	FREETMPS;
419	LEAVE;	170	LEAVE;
420	}
421
422	/* stop if no progress has been made */
423	if (old_len == grp->size)
424	{
425	SvREFCNT_dec (grp->sv2);
426	grp->sv2 = 0;
427	break;
428	}
429	}	171	}
430
431	unblock_sig ();
432	}	172	}
433		173
434	static void aio_grp_dec (aio_req grp)	174	static void req_submit (eio_req *req)
435	{	175	{
436	--grp->size;	176	eio_submit (req);
437		177
438	/* call feeder, if applicable */	178	if (on_next_submit)
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	179	{
444	block_sig ();	180	dSP;
		181	SV *cb = sv_2mortal (on_next_submit);
445		182
446	if (!req_invoke (grp))	183	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		184
453	req_destroy (grp);	185	PUSHMARK (SP);
454	unblock_sig ();	186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
455	}	188	}
456	}	189	}
457		190
458	static int req_invoke (aio_req req)	191	static int req_invoke (eio_req *req)
459	{	192	{
460	dSP;	193	dSP;
461		194
462	if (req->flags & FLAG_SV2_RO_OFF)	195	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	196	SvREADONLY_off (req->sv2);
464		197
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
466	{	199	{
467	ENTER;	200	ENTER;
468	SAVETMPS;	201	SAVETMPS;
469	PUSHMARK (SP);	202	PUSHMARK (SP);
470	EXTEND (SP, 1);	203	EXTEND (SP, 1);
471		204
472	switch (req->type)	205	switch (req->type)
473	{	206	{
474	case REQ_READDIR:	207	case EIO_READDIR:
475	{	208	{
476	SV *rv = &PL_sv_undef;	209	SV *rv = &PL_sv_undef;
477		210
478	if (req->result >= 0)	211	if (req->result >= 0)
479	{	212	{
…		…
496		229
497	PUSHs (rv);	230	PUSHs (rv);
498	}	231	}
499	break;	232	break;
500		233
501	case REQ_OPEN:	234	case EIO_OPEN:
502	{	235	{
503	/* convert fd to fh */	236	/* convert fd to fh */
504	SV *fh;	237	SV *fh = &PL_sv_undef;
505		238
506	PUSHs (sv_2mortal (newSViv (req->result)));	239	if (req->result >= 0)
507	PUTBACK;	240	{
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	241	GV *gv = (GV *)sv_newmortal ();
509	SPAGAIN;	242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
510		248
511	fh = POPs;	249	symlen = snprintf (
512	PUSHMARK (SP);	250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
		255	);
		256
		257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		258	fh = (SV *)gv;
		259	}
		260
513	XPUSHs (fh);	261	PUSHs (fh);
514	}	262	}
515	break;	263	break;
516		264
517	case REQ_GROUP:	265	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	266	req->int1 = 2; /* mark group as finished */
519		267
520	if (req->sv1)	268	if (req->sv1)
521	{	269	{
522	int i;	270	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	274	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	275	PUSHs (*av_fetch (av, i, 0));
528	}	276	}
529	break;	277	break;
530		278
531	case REQ_NOP:	279	case EIO_NOP:
532	case REQ_BUSY:	280	case EIO_BUSY:
533	break;	281	break;
534		282
535	case REQ_READLINK:	283	case EIO_READLINK:
536	if (req->result > 0)	284	if (req->result > 0)
537	{	285	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
538	SvCUR_set (req->sv2, req->result);
539	*SvEND (req->sv2) = 0;
540	PUSHs (req->sv2);
541	}
542	break;	286	break;
543		287
544	case REQ_STAT:	288	case EIO_STAT:
545	case REQ_LSTAT:	289	case EIO_LSTAT:
546	case REQ_FSTAT:	290	case EIO_FSTAT:
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	291	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;	292	PL_laststatval = req->result;
549	PL_statcache = *(Stat_t *)(req->ptr2);	293	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));	294	PUSHs (sv_2mortal (newSViv (req->result)));
551	break;	295	break;
552		296
553	case REQ_READ:	297	case EIO_READ:
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	298	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;	299	*SvEND (req->sv2) = 0;
556	PUSHs (sv_2mortal (newSViv (req->result)));	300	PUSHs (sv_2mortal (newSViv (req->result)));
557	break;	301	break;
558		302
		303	case EIO_DUP2:
		304	if (req->result > 0)
		305	req->result = 0;
		306	/* FALLTHROUGH */
		307
559	default:	308	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	309	PUSHs (sv_2mortal (newSViv (req->result)));
561	break;	310	break;
562	}	311	}
563		312
564	errno = req->errorno;	313	errno = req->errorno;
565		314
566	PUTBACK;	315	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	316	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	317	SPAGAIN;
569		318
570	FREETMPS;	319	FREETMPS;
571	LEAVE;	320	LEAVE;
		321
		322	PUTBACK;
572	}	323	}
573		324
574	if (req->grp)
575	{
576	aio_req grp = req->grp;
577
578	/* unlink request */
579	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
580	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
581
582	if (grp->grp_first == req)
583	grp->grp_first = req->grp_next;
584
585	aio_grp_dec (grp);
586	}
587
588	return !SvTRUE (ERRSV);	325	return !!SvTRUE (ERRSV);
589	}	326	}
590		327
591	static void req_destroy (aio_req req)	328	static void req_destroy (aio_req req)
592	{	329	{
593	if (req->self)	330	if (req->self)
…		…
598		335
599	SvREFCNT_dec (req->sv1);	336	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	337	SvREFCNT_dec (req->sv2);
601	SvREFCNT_dec (req->callback);	338	SvREFCNT_dec (req->callback);
602		339
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	340	Safefree (req);
607	}	341	}
608		342
609	static void req_cancel_subs (aio_req grp)	343	static void req_cancel_subs (aio_req grp)
610	{	344	{
611	aio_req sub;	345	aio_req sub;
612		346
613	if (grp->type != REQ_GROUP)	347	if (grp->type != EIO_GROUP)
614	return;	348	return;
615		349
616	SvREFCNT_dec (grp->sv2);	350	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	351	grp->sv2 = 0;
618		352
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	353	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	354	}
622		355
623	static void req_cancel (aio_req req)	356	#ifdef USE_SOCKETS_AS_HANDLES
624	{	357	# define TO_SOCKET(x) (win32_get_osfhandle (x))
625	req->flags |= FLAG_CANCELLED;	358	#else
		359	# define TO_SOCKET(x) (x)
		360	#endif
626		361
627	req_cancel_subs (req);	362	static void
628	}	363	create_respipe (void)
629
630	X_THREAD_PROC (aio_proc);
631
632	static void start_thread (void)
633	{	364	{
634	worker *wrk = calloc (1, sizeof (worker));	365	int old_readfd = respipe [0];
635		366
636	if (!wrk)	367	if (respipe [1] >= 0)
637	croak ("unable to allocate worker thread data");	368	respipe_close (TO_SOCKET (respipe [1]));
638		369
639	X_LOCK (wrklock);	370	#ifdef _WIN32
		371	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		372	#else
		373	if (pipe (respipe))
		374	#endif
		375	croak ("unable to initialize result pipe");
640		376
641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	377	if (old_readfd >= 0)
642	{	378	{
643	wrk->prev = &wrk_first;	379	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
644	wrk->next = wrk_first.next;	380	croak ("unable to initialize result pipe(2)");
645	wrk_first.next->prev = wrk;	381
646	wrk_first.next = wrk;	382	respipe_close (respipe [0]);
647	++started;	383	respipe [0] = old_readfd;
648	}	384	}
649	else
650	free (wrk);
651		385
652	X_UNLOCK (wrklock);	386	#ifdef _WIN32
653	}	387	int arg = 1;
		388	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		389	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		390	#else
		391	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		392	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		393	#endif
		394	croak ("unable to initialize result pipe(3)");
654		395
655	static void maybe_start_thread ()	396	respipe_osf [0] = TO_SOCKET (respipe [0]);
656	{	397	respipe_osf [1] = TO_SOCKET (respipe [1]);
657	if (get_nthreads () >= wanted)
658	return;
659
660	/* todo: maybe use idle here, but might be less exact */
661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
662	return;
663
664	start_thread ();
665	}	398	}
666		399
667	static void req_send (aio_req req)
668	{
669	block_sig ();
670
671	++nreqs;
672
673	X_LOCK (reqlock);
674	++nready;
675	reqq_push (&req_queue, req);
676	X_COND_SIGNAL (reqwait);
677	X_UNLOCK (reqlock);
678
679	unblock_sig ();
680
681	maybe_start_thread ();
682	}
683
684	static void end_thread (void)
685	{
686	aio_req req;
687
688	Newz (0, req, 1, aio_cb);
689
690	req->type = REQ_QUIT;
691	req->pri = PRI_MAX + PRI_BIAS;
692
693	X_LOCK (reqlock);
694	reqq_push (&req_queue, req);
695	X_COND_SIGNAL (reqwait);
696	X_UNLOCK (reqlock);
697
698	X_LOCK (wrklock);
699	--started;
700	X_UNLOCK (wrklock);
701	}
702
703	static void set_max_idle (int nthreads)
704	{
705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
706	max_idle = nthreads <= 0 ? 1 : nthreads;
707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
708	}
709
710	static void min_parallel (int nthreads)
711	{
712	if (wanted < nthreads)
713	wanted = nthreads;
714	}
715
716	static void max_parallel (int nthreads)
717	{
718	if (wanted > nthreads)
719	wanted = nthreads;
720
721	while (started > wanted)
722	end_thread ();
723	}
724
725	static void poll_wait ()	400	static void poll_wait (void)
726	{	401	{
727	fd_set rfd;	402	fd_set rfd;
728		403
729	while (nreqs)	404	while (eio_nreqs ())
730	{	405	{
731	int size;	406	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	407
		408	X_LOCK (reslock);
733	size = res_queue.size;	409	size = res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	410	X_UNLOCK (reslock);
735		411
736	if (size)	412	if (size)
737	return;	413	return;
738		414
739	maybe_start_thread ();	415	maybe_start_thread ();
740		416
741	FD_ZERO(&rfd);	417	FD_ZERO (&rfd);
742	FD_SET(respipe [0], &rfd);	418	FD_SET (respipe [0], &rfd);
743		419
744	select (respipe [0] + 1, &rfd, 0, 0, 0);	420	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	421	}
746	}	422	}
747		423
748	static int poll_cb ()	424	static int poll_cb (void)
749	{	425	{
750	dSP;	426	int res;
751	int count = 0;
752	int maxreqs = max_poll_reqs;
753	int do_croak = 0;
754	struct timeval tv_start, tv_now;
755	aio_req req;
756		427
757	if (max_poll_time)	428	do
758	gettimeofday (&tv_start, 0);
759
760	block_sig ();
761
762	for (;;)
763	{	429	{
764	for (;;)	430	res = eio_poll ();
765	{
766	maybe_start_thread ();
767		431
768	X_LOCK (reslock);	432	if (res > 0)
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{
773	--npending;
774
775	if (!res_queue.size)
776	{
777	/* read any signals sent by the worker threads */
778	char buf [4];
779	while (read (respipe [0], buf, 4) == 4)
780	;
781	}
782	}
783
784	X_UNLOCK (reslock);
785
786	if (!req)
787	break;
788
789	--nreqs;
790
791	if (req->type == REQ_GROUP && req->size)
792	{
793	req->int1 = 1; /* mark request as delayed */
794	continue;
795	}
796	else
797	{
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);	433	croak (0);
803	}
804
805	count++;
806	}
807
808	req_destroy (req);
809
810	if (maxreqs && !--maxreqs)
811	break;
812
813	if (max_poll_time)
814	{
815	gettimeofday (&tv_now, 0);
816
817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
818	break;
819	}
820	}
821
822	if (nreqs <= max_outstanding)
823	break;
824
825	poll_wait ();
826
827	++maxreqs;
828	}	434	}
829		435	while (max_outstanding && max_outstanding <= eio_nreqs ());
830	unblock_sig ();
831	return count;
832	}
833
834	/*****************************************************************************/
835	/* work around various missing functions */
836
837	#if !HAVE_PREADWRITE
838	# define pread aio_pread
839	# define pwrite aio_pwrite
840
841	/*
842	* make our pread/pwrite safe against themselves, but not against
843	* normal read/write by using a mutex. slows down execution a lot,
844	* but that's your problem, not mine.
845	*/
846	static mutex_t preadwritelock = X_MUTEX_INIT;
847
848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
849	{
850	ssize_t res;
851	off_t ooffset;
852
853	X_LOCK (preadwritelock);
854	ooffset = lseek (fd, 0, SEEK_CUR);
855	lseek (fd, offset, SEEK_SET);
856	res = read (fd, buf, count);
857	lseek (fd, ooffset, SEEK_SET);
858	X_UNLOCK (preadwritelock);
859		436
860	return res;	437	return res;
861	}	438	}
862		439
863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
864	{
865	ssize_t res;
866	off_t ooffset;
867
868	X_LOCK (preadwritelock);
869	ooffset = lseek (fd, 0, SEEK_CUR);
870	lseek (fd, offset, SEEK_SET);
871	res = write (fd, buf, count);
872	lseek (fd, offset, SEEK_SET);
873	X_UNLOCK (preadwritelock);
874
875	return res;
876	}
877	#endif
878
879	#ifndef HAVE_FUTIMES
880
881	# define utimes(path,times) aio_utimes (path, times)
882	# define futimes(fd,times) aio_futimes (fd, times)
883
884	int aio_utimes (const char *filename, const struct timeval times[2])
885	{
886	if (times)
887	{
888	struct utimbuf buf;
889
890	buf.actime = times[0].tv_sec;
891	buf.modtime = times[1].tv_sec;
892
893	return utime (filename, &buf);
894	}
895	else
896	return utime (filename, 0);
897	}
898
899	int aio_futimes (int fd, const struct timeval tv[2])
900	{
901	errno = ENOSYS;
902	return -1;
903	}
904
905	#endif
906
907	#if !HAVE_FDATASYNC
908	# define fdatasync fsync
909	#endif
910
911	#if !HAVE_READAHEAD
912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
913
914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
915	{
916	size_t todo = count;
917	dBUF;
918
919	while (todo > 0)
920	{
921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
922
923	pread (fd, aio_buf, len, offset);
924	offset += len;
925	todo -= len;
926	}
927
928	errno = 0;
929	return count;
930	}
931
932	#endif
933
934	#if !HAVE_READDIR_R
935	# define readdir_r aio_readdir_r
936
937	static mutex_t readdirlock = X_MUTEX_INIT;
938
939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
940	{
941	X_DIRENT *e;
942	int errorno;
943
944	X_LOCK (readdirlock);
945
946	e = readdir (dirp);
947	errorno = errno;
948
949	if (e)
950	{
951	*res = ent;
952	strcpy (ent->d_name, e->d_name);
953	}
954	else
955	*res = 0;
956
957	X_UNLOCK (readdirlock);
958
959	errno = errorno;
960	return e ? 0 : -1;
961	}
962	#endif
963
964	/* sendfile always needs emulation */
965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
966	{
967	ssize_t res;
968
969	if (!count)
970	return 0;
971
972	#if HAVE_SENDFILE
973	# if __linux
974	res = sendfile (ofd, ifd, &offset, count);
975
976	# elif __freebsd
977	/*
978	* Of course, the freebsd sendfile is a dire hack with no thoughts
979	* wasted on making it similar to other I/O functions.
980	*/
981	{
982	off_t sbytes;
983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
984
985	if (res < 0 && sbytes)
986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
987	res = sbytes;
988	}
989
990	# elif __hpux
991	res = sendfile (ofd, ifd, offset, count, 0, 0);
992
993	# elif __solaris
994	{
995	struct sendfilevec vec;
996	size_t sbytes;
997
998	vec.sfv_fd = ifd;
999	vec.sfv_flag = 0;
1000	vec.sfv_off = offset;
1001	vec.sfv_len = count;
1002
1003	res = sendfilev (ofd, &vec, 1, &sbytes);
1004
1005	if (res < 0 && sbytes)
1006	res = sbytes;
1007	}
1008
1009	# endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014
1015	if (res < 0
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1017	#if __solaris
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1019	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025
1026	res = 0;
1027
1028	while (count)
1029	{
1030	ssize_t cnt;
1031
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1033
1034	if (cnt <= 0)
1035	{
1036	if (cnt && !res) res = -1;
1037	break;
1038	}
1039
1040	cnt = write (ofd, aio_buf, cnt);
1041
1042	if (cnt <= 0)
1043	{
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047
1048	offset += cnt;
1049	res += cnt;
1050	count -= cnt;
1051	}
1052	}
1053
1054	return res;
1055	}
1056
1057	/* read a full directory */
1058	static void scandir_ (aio_req req, worker *self)
1059	{
1060	DIR *dirp;
1061	union
1062	{
1063	X_DIRENT d;
1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1065	} *u;
1066	X_DIRENT *entp;
1067	char *name, *names;
1068	int memlen = 4096;
1069	int memofs = 0;
1070	int res = 0;
1071
1072	X_LOCK (wrklock);
1073	self->dirp = dirp = opendir (req->ptr1);
1074	self->dbuf = u = malloc (sizeof (*u));
1075	req->flags |= FLAG_PTR2_FREE;
1076	req->ptr2 = names = malloc (memlen);
1077	X_UNLOCK (wrklock);
1078
1079	if (dirp && u && names)
1080	for (;;)
1081	{
1082	errno = 0;
1083	readdir_r (dirp, &u->d, &entp);
1084
1085	if (!entp)
1086	break;
1087
1088	name = entp->d_name;
1089
1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1091	{
1092	int len = strlen (name) + 1;
1093
1094	res++;
1095
1096	while (memofs + len > memlen)
1097	{
1098	memlen *= 2;
1099	X_LOCK (wrklock);
1100	req->ptr2 = names = realloc (names, memlen);
1101	X_UNLOCK (wrklock);
1102
1103	if (!names)
1104	break;
1105	}
1106
1107	memcpy (names + memofs, name, len);
1108	memofs += len;
1109	}
1110	}
1111
1112	if (errno)
1113	res = -1;
1114
1115	req->result = res;
1116	}
1117
1118	/*****************************************************************************/
1119
1120	X_THREAD_PROC (aio_proc)
1121	{
1122	{//D
1123	aio_req req;
1124	struct timespec ts;
1125	worker *self = (worker *)thr_arg;
1126
1127	/* try to distribute timeouts somewhat randomly */
1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1129
1130	for (;;)
1131	{
1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1133
1134	X_LOCK (reqlock);
1135
1136	for (;;)
1137	{
1138	self->req = req = reqq_shift (&req_queue);
1139
1140	if (req)
1141	break;
1142
1143	++idle;
1144
1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1146	== ETIMEDOUT)
1147	{
1148	if (idle > max_idle)
1149	{
1150	--idle;
1151	X_UNLOCK (reqlock);
1152	X_LOCK (wrklock);
1153	--started;
1154	X_UNLOCK (wrklock);
1155	goto quit;
1156	}
1157
1158	/* we are allowed to idle, so do so without any timeout */
1159	X_COND_WAIT (reqwait, reqlock);
1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1161	}
1162
1163	--idle;
1164	}
1165
1166	--nready;
1167
1168	X_UNLOCK (reqlock);
1169
1170	errno = 0; /* strictly unnecessary */
1171
1172	if (!(req->flags & FLAG_CANCELLED))
1173	switch (req->type)
1174	{
1175	case REQ_READ: req->result = req->offs >= 0
1176	? pread (req->int1, req->ptr1, req->size, req->offs)
1177	: read (req->int1, req->ptr1, req->size); break;
1178	case REQ_WRITE: req->result = req->offs >= 0
1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1180	: write (req->int1, req->ptr1, req->size); break;
1181
1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1184
1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1188
1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1195
1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1197	case REQ_CLOSE: req->result = close (req->int1); break;
1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1206
1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
1209	case REQ_READDIR: scandir_ (req, self); break;
1210
1211	case REQ_BUSY:
1212	#ifdef _WIN32
1213	Sleep (req->nv1 * 1000.);
1214	#else
1215	{
1216	struct timeval tv;
1217
1218	tv.tv_sec = req->nv1;
1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1220
1221	req->result = select (0, 0, 0, 0, &tv);
1222	}
1223	#endif
1224	break;
1225
1226	case REQ_UTIME:
1227	case REQ_FUTIME:
1228	{
1229	struct timeval tv[2];
1230	struct timeval *times;
1231
1232	if (req->nv1 != -1. || req->nv2 != -1.)
1233	{
1234	tv[0].tv_sec = req->nv1;
1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1236	tv[1].tv_sec = req->nv2;
1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1238
1239	times = tv;
1240	}
1241	else
1242	times = 0;
1243
1244
1245	req->result = req->type == REQ_FUTIME
1246	? futimes (req->int1, times)
1247	: utimes (req->ptr1, times);
1248	}
1249
1250	case REQ_GROUP:
1251	case REQ_NOP:
1252	break;
1253
1254	case REQ_QUIT:
1255	goto quit;
1256
1257	default:
1258	req->result = -1;
1259	break;
1260	}
1261
1262	req->errorno = errno;
1263
1264	X_LOCK (reslock);
1265
1266	++npending;
1267
1268	if (!reqq_push (&res_queue, req))
1269	{
1270	/* write a dummy byte to the pipe so fh becomes ready */
1271	write (respipe [1], &respipe, 1);
1272
1273	/* optionally signal the main thread asynchronously */
1274	if (main_sig)
1275	pthread_kill (main_tid, main_sig);
1276	}
1277
1278	self->req = 0;
1279	worker_clear (self);
1280
1281	X_UNLOCK (reslock);
1282	}
1283
1284	quit:
1285	X_LOCK (wrklock);
1286	worker_free (self);
1287	X_UNLOCK (wrklock);
1288
1289	return 0;
1290	}//D
1291	}
1292
1293	/*****************************************************************************/
1294
1295	static void atfork_prepare (void)
1296	{
1297	X_LOCK (wrklock);
1298	X_LOCK (reqlock);
1299	X_LOCK (reslock);
1300	#if !HAVE_PREADWRITE
1301	X_LOCK (preadwritelock);
1302	#endif
1303	#if !HAVE_READDIR_R
1304	X_LOCK (readdirlock);
1305	#endif
1306	}
1307
1308	static void atfork_parent (void)
1309	{
1310	#if !HAVE_READDIR_R
1311	X_UNLOCK (readdirlock);
1312	#endif
1313	#if !HAVE_PREADWRITE
1314	X_UNLOCK (preadwritelock);
1315	#endif
1316	X_UNLOCK (reslock);
1317	X_UNLOCK (reqlock);
1318	X_UNLOCK (wrklock);
1319	}
1320
1321	static void atfork_child (void)	440	static void atfork_child (void)
1322	{	441	{
1323	aio_req prv;	442	create_respipe ();
1324
1325	while (prv = reqq_shift (&req_queue))
1326	req_destroy (prv);
1327
1328	while (prv = reqq_shift (&res_queue))
1329	req_destroy (prv);
1330
1331	while (wrk_first.next != &wrk_first)
1332	{
1333	worker *wrk = wrk_first.next;
1334
1335	if (wrk->req)
1336	req_destroy (wrk->req);
1337
1338	worker_clear (wrk);
1339	worker_free (wrk);
1340	}
1341
1342	started = 0;
1343	idle = 0;
1344	nreqs = 0;
1345	nready = 0;
1346	npending = 0;
1347
1348	close (respipe [0]);
1349	close (respipe [1]);
1350
1351	if (!create_pipe (respipe))
1352	croak ("cannot set result pipe to nonblocking mode");
1353
1354	atfork_parent ();
1355	}	443	}
1356		444
1357	#define dREQ \	445	#define dREQ \
1358	aio_req req; \	446	aio_req req; \
1359	int req_pri = next_pri; \	447	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \	448	next_pri = EIO_PRI_DEFAULT; \
1361	\	449	\
1362	if (SvOK (callback) && !SvROK (callback)) \	450	if (SvOK (callback) && !SvROK (callback)) \
1363	croak ("callback must be undef or of reference type"); \	451	croak ("callback must be undef or of reference type"); \
1364	\	452	\
1365	Newz (0, req, 1, aio_cb); \	453	Newz (0, req, 1, eio_req); \
1366	if (!req) \	454	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \	455	croak ("out of memory during eio_req allocation"); \
1368	\	456	\
1369	req->callback = newSVsv (callback); \	457	req->callback = newSVsv (callback); \
1370	req->pri = req_pri	458	req->pri = req_pri
1371		459
1372	#define REQ_SEND \	460	#define REQ_SEND \
1373	req_send (req); \	461	req_submit (req); \
1374	\	462	\
1375	if (GIMME_V != G_VOID) \	463	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));	464	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1377		465
1378	MODULE = IO::AIO PACKAGE = IO::AIO	466	MODULE = IO::AIO PACKAGE = IO::AIO
1379		467
1380	PROTOTYPES: ENABLE	468	PROTOTYPES: ENABLE
1381		469
1382	BOOT:	470	BOOT:
1383	{	471	{
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	472	stash = gv_stashpv ("IO::AIO", 1);
1385		473
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
…		…
1393	X_MUTEX_CHECK (reslock);	481	X_MUTEX_CHECK (reslock);
1394	X_MUTEX_CHECK (reqlock);	482	X_MUTEX_CHECK (reqlock);
1395	X_MUTEX_CHECK (reqwait);	483	X_MUTEX_CHECK (reqwait);
1396	X_MUTEX_CHECK (preadwritelock);	484	X_MUTEX_CHECK (preadwritelock);
1397	X_MUTEX_CHECK (readdirlock);	485	X_MUTEX_CHECK (readdirlock);
		486
		487	X_COND_CHECK (reqwait);
1398	#else	488	#else
1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1401	#endif	490	#endif
1402		491
1403	if (!create_pipe (respipe))	492	create_respipe ();
1404	croak ("cannot set result pipe to nonblocking mode");
1405		493
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	494	if (eio_init (want_poll, done_poll) < 0)
		495	croak ("IO::AIO: unable to initialise eio library");
		496
		497	/* atfork child called in fifo order, so before eio's handler */
		498	X_THREAD_ATFORK (0, 0, atfork_child);
1407	}	499	}
1408		500
1409	void	501	void
1410	max_poll_reqs (int nreqs)	502	max_poll_reqs (int nreqs)
1411	PROTOTYPE: $	503	PROTOTYPE: $
1412	CODE:	504	CODE:
1413	max_poll_reqs = nreqs;	505	eio_set_max_poll_reqs (nreqs);
1414		506
1415	void	507	void
1416	max_poll_time (double nseconds)	508	max_poll_time (double nseconds)
1417	PROTOTYPE: $	509	PROTOTYPE: $
1418	CODE:	510	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	511	eio_set_max_poll_time (nseconds);
1420		512
1421	void	513	void
1422	min_parallel (int nthreads)	514	min_parallel (int nthreads)
1423	PROTOTYPE: $	515	PROTOTYPE: $
		516	CODE:
		517	eio_set_min_parallel (nthreads);
1424		518
1425	void	519	void
1426	max_parallel (int nthreads)	520	max_parallel (int nthreads)
1427	PROTOTYPE: $	521	PROTOTYPE: $
		522	CODE:
		523	eio_set_max_parallel (nthreads);
1428		524
1429	void	525	void
1430	max_idle (int nthreads)	526	max_idle (int nthreads)
1431	PROTOTYPE: $	527	PROTOTYPE: $
1432	CODE:	528	CODE:
1433	set_max_idle (nthreads);	529	eio_set_max_idle (nthreads);
1434		530
1435	int	531	void
1436	max_outstanding (int maxreqs)	532	max_outstanding (int maxreqs)
1437	PROTOTYPE: $	533	PROTOTYPE: $
1438	CODE:	534	CODE:
1439	RETVAL = max_outstanding;
1440	max_outstanding = maxreqs;	535	max_outstanding = maxreqs;
1441	OUTPUT:
1442	RETVAL
1443		536
1444	void	537	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	538	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1446	PROTOTYPE: $$$;$	539	PROTOTYPE: $$$;$
1447	PPCODE:	540	PPCODE:
1448	{	541	{
1449	dREQ;	542	dREQ;
1450		543
1451	req->type = REQ_OPEN;	544	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	545	req->sv1 = newSVsv (pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);	546	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	547	req->int1 = flags;
1455	req->mode = mode;	548	req->int2 = mode;
1456		549
1457	REQ_SEND;	550	REQ_SEND;
1458	}	551	}
1459		552
1460	void	553	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	554	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1462	PROTOTYPE: $;$	555	PROTOTYPE: $;$
1463	ALIAS:	556	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC	557	aio_fsync = EIO_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC	558	aio_fdatasync = EIO_FDATASYNC
1467	PPCODE:	559	PPCODE:
1468	{	560	{
1469	dREQ;	561	dREQ;
1470		562
1471	req->type = ix;	563	req->type = ix;
…		…
1474		566
1475	REQ_SEND (req);	567	REQ_SEND (req);
1476	}	568	}
1477		569
1478	void	570	void
		571	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		572	PROTOTYPE: $;$
		573	PPCODE:
		574	{
		575	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		576	dREQ;
		577
		578	if (close_pipe < 0)
		579	{
		580	int pipefd [2];
		581
		582	if (pipe (pipefd) < 0
		583	|| close (pipefd [1]) < 0
		584	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		585	abort (); /*D*/
		586
		587	close_pipe = pipefd [0];
		588	}
		589
		590	req->type = EIO_DUP2;
		591	req->int1 = close_pipe;
		592	req->sv2 = newSVsv (fh);
		593	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		594
		595	REQ_SEND (req);
		596	}
		597
		598	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	599	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1480	ALIAS:	600	ALIAS:
1481	aio_read = REQ_READ	601	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	602	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$	603	PROTOTYPE: $$$$$;$
1484	PPCODE:	604	PPCODE:
1485	{	605	{
1486	STRLEN svlen;	606	STRLEN svlen;
1487	char *svptr = SvPVbyte (data, svlen);	607	char *svptr = SvPVbyte (data, svlen);
…		…
1494	dataoffset += svlen;	614	dataoffset += svlen;
1495		615
1496	if (dataoffset < 0 || dataoffset > svlen)	616	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	617	croak ("dataoffset outside of data scalar");
1498		618
1499	if (ix == REQ_WRITE)	619	if (ix == EIO_WRITE)
1500	{	620	{
1501	/* write: check length and adjust. */	621	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	622	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	623	len = svlen - dataoffset;
1504	}	624	}
…		…
1514	{	634	{
1515	dREQ;	635	dREQ;
1516		636
1517	req->type = ix;	637	req->type = ix;
1518	req->sv1 = newSVsv (fh);	638	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	639	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1520	: IoOFP (sv_2io (fh)));	640	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	642	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	643	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	644	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	645	req->stroffset = dataoffset;
1526		646
1527	if (!SvREADONLY (data))	647	if (!SvREADONLY (data))
1528	{	648	{
1529	SvREADONLY_on (data);	649	SvREADONLY_on (data);
…		…
1540	PPCODE:	660	PPCODE:
1541	{	661	{
1542	SV *data;	662	SV *data;
1543	dREQ;	663	dREQ;
1544		664
1545	data = newSV (NAME_MAX);
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;	665	req->type = EIO_READLINK;
1549	req->sv1 = newSVsv (path);	666	req->sv1 = newSVsv (path);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);	667	req->ptr1 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553		668
1554	REQ_SEND;	669	REQ_SEND;
1555	}	670	}
1556		671
1557	void	672	void
…		…
1559	PROTOTYPE: $$$$;$	674	PROTOTYPE: $$$$;$
1560	PPCODE:	675	PPCODE:
1561	{	676	{
1562	dREQ;	677	dREQ;
1563		678
1564	req->type = REQ_SENDFILE;	679	req->type = EIO_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);	680	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	681	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1567	req->sv2 = newSVsv (in_fh);	682	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	683	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1569	req->offs = SvVAL64 (in_offset);	684	req->offs = SvVAL64 (in_offset);
…		…
1577	PROTOTYPE: $$$;$	692	PROTOTYPE: $$$;$
1578	PPCODE:	693	PPCODE:
1579	{	694	{
1580	dREQ;	695	dREQ;
1581		696
1582	req->type = REQ_READAHEAD;	697	req->type = EIO_READAHEAD;
1583	req->sv1 = newSVsv (fh);	698	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	699	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1585	req->offs = SvVAL64 (offset);	700	req->offs = SvVAL64 (offset);
1586	req->size = length;	701	req->size = length;
1587		702
…		…
1589	}	704	}
1590		705
1591	void	706	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	707	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:	708	ALIAS:
1594	aio_stat = REQ_STAT	709	aio_stat = EIO_STAT
1595	aio_lstat = REQ_LSTAT	710	aio_lstat = EIO_LSTAT
1596	PPCODE:	711	PPCODE:
1597	{	712	{
1598	dREQ;	713	dREQ;
1599		714
1600	req->ptr2 = malloc (sizeof (Stat_t));
1601	if (!req->ptr2)
1602	{
1603	req_destroy (req);
1604	croak ("out of memory during aio_stat statdata allocation");
1605	}
1606
1607	req->flags |= FLAG_PTR2_FREE;
1608	req->sv1 = newSVsv (fh_or_path);	715	req->sv1 = newSVsv (fh_or_path);
1609		716
1610	if (SvPOK (fh_or_path))	717	if (SvPOK (req->sv1))
1611	{	718	{
1612	req->type = ix;	719	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);	720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}	721	}
1615	else	722	else
1616	{	723	{
1617	req->type = REQ_FSTAT;	724	req->type = EIO_FSTAT;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1619	}	726	}
1620		727
1621	REQ_SEND;	728	REQ_SEND;
1622	}	729	}
…		…
1629		736
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	737	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	738	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	739	req->sv1 = newSVsv (fh_or_path);
1633		740
1634	if (SvPOK (fh_or_path))	741	if (SvPOK (req->sv1))
1635	{	742	{
1636	req->type = REQ_UTIME;	743	req->type = EIO_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);	744	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}	745	}
1639	else	746	else
1640	{	747	{
1641	req->type = REQ_FUTIME;	748	req->type = EIO_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}	750	}
1644		751
1645	REQ_SEND;	752	REQ_SEND;
1646	}	753	}
…		…
1652	dREQ;	759	dREQ;
1653		760
1654	req->sv1 = newSVsv (fh_or_path);	761	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	762	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		763
1657	if (SvPOK (fh_or_path))	764	if (SvPOK (req->sv1))
1658	{	765	{
1659	req->type = REQ_TRUNCATE;	766	req->type = EIO_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);	767	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}	768	}
1662	else	769	else
1663	{	770	{
1664	req->type = REQ_FTRUNCATE;	771	req->type = EIO_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}	773	}
1667		774
1668	REQ_SEND;	775	REQ_SEND;
1669	}	776	}
1670		777
1671	void	778	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	779	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		780	ALIAS:
		781	aio_chmod = EIO_CHMOD
		782	aio_mkdir = EIO_MKDIR
1673	PPCODE:	783	PPCODE:
1674	{	784	{
1675	dREQ;	785	dREQ;
1676		786
1677	req->mode = mode;	787	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	788	req->sv1 = newSVsv (fh_or_path);
1679		789
1680	if (SvPOK (fh_or_path))	790	if (SvPOK (req->sv1))
1681	{	791	{
1682	req->type = REQ_CHMOD;	792	req->type = ix;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);	793	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}	794	}
1685	else	795	else
1686	{	796	{
1687	req->type = REQ_FCHMOD;	797	req->type = EIO_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	798	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}	799	}
1690		800
1691	REQ_SEND;	801	REQ_SEND;
1692	}	802	}
…		…
1699		809
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	810	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	811	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	812	req->sv1 = newSVsv (fh_or_path);
1703		813
1704	if (SvPOK (fh_or_path))	814	if (SvPOK (req->sv1))
1705	{	815	{
1706	req->type = REQ_CHOWN;	816	req->type = EIO_CHOWN;
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);	817	req->ptr1 = SvPVbyte_nolen (req->sv1);
1708	}	818	}
1709	else	819	else
1710	{	820	{
1711	req->type = REQ_FCHOWN;	821	req->type = EIO_FCHOWN;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1713	}	823	}
1714		824
1715	REQ_SEND;	825	REQ_SEND;
1716	}	826	}
1717		827
1718	void	828	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	829	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1720	ALIAS:	830	ALIAS:
1721	aio_unlink = REQ_UNLINK	831	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	832	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	833	aio_readdir = EIO_READDIR
1724	PPCODE:	834	PPCODE:
1725	{	835	{
1726	dREQ;	836	dREQ;
1727		837
1728	req->type = ix;	838	req->type = ix;
…		…
1731		841
1732	REQ_SEND;	842	REQ_SEND;
1733	}	843	}
1734		844
1735	void	845	void
1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	846	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_link = EIO_LINK
		849	aio_symlink = EIO_SYMLINK
		850	aio_rename = EIO_RENAME
1737	PPCODE:	851	PPCODE:
1738	{	852	{
1739	dREQ;	853	dREQ;
1740		854
		855	req->type = ix;
		856	req->sv1 = newSVsv (oldpath);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858	req->sv2 = newSVsv (newpath);
		859	req->ptr2 = SvPVbyte_nolen (req->sv2);
		860
		861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		866	PPCODE:
		867	{
		868	dREQ;
		869
1741	req->type = REQ_MKDIR;	870	req->type = EIO_MKNOD;
1742	req->sv1 = newSVsv (pathname);	871	req->sv1 = newSVsv (pathname);
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);	872	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	req->mode = mode;
1745
1746	REQ_SEND;
1747	}
1748
1749	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:
1752	aio_link = REQ_LINK
1753	aio_symlink = REQ_SYMLINK
1754	aio_rename = REQ_RENAME
1755	PPCODE:
1756	{
1757	dREQ;
1758
1759	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);
1762	req->sv1 = newSVsv (newpath);
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764
1765	REQ_SEND;
1766	}
1767
1768	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1770	PPCODE:
1771	{
1772	dREQ;
1773
1774	req->type = REQ_MKNOD;
1775	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	873	req->int2 = (mode_t)mode;
1778	req->offs = dev;	874	req->offs = dev;
1779		875
1780	REQ_SEND;	876	REQ_SEND;
1781	}	877	}
1782		878
…		…
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	880	aio_busy (double delay, SV *callback=&PL_sv_undef)
1785	PPCODE:	881	PPCODE:
1786	{	882	{
1787	dREQ;	883	dREQ;
1788		884
1789	req->type = REQ_BUSY;	885	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	886	req->nv1 = delay < 0. ? 0. : delay;
1791		887
1792	REQ_SEND;	888	REQ_SEND;
1793	}	889	}
1794		890
…		…
1797	PROTOTYPE: ;$	893	PROTOTYPE: ;$
1798	PPCODE:	894	PPCODE:
1799	{	895	{
1800	dREQ;	896	dREQ;
1801		897
1802	req->type = REQ_GROUP;	898	req->type = EIO_GROUP;
1803		899
1804	req_send (req);	900	eio_submit (req);
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	901	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1806	}	902	}
1807		903
1808	void	904	void
1809	aio_nop (SV *callback=&PL_sv_undef)	905	aio_nop (SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_nop = EIO_NOP
		908	aio_sync = EIO_SYNC
1810	PPCODE:	909	PPCODE:
1811	{	910	{
1812	dREQ;	911	dREQ;
1813		912
1814	req->type = REQ_NOP;	913	req->type = ix;
1815		914
1816	REQ_SEND;	915	REQ_SEND;
1817	}	916	}
1818		917
1819	int	918	int
1820	aioreq_pri (int pri = 0)	919	aioreq_pri (int pri = 0)
1821	PROTOTYPE: ;$	920	PROTOTYPE: ;$
1822	CODE:	921	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	922	RETVAL = next_pri;
1824	if (items > 0)	923	if (items > 0)
1825	{	924	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	925	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	926	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	927	next_pri = pri;
1829	}	928	}
1830	OUTPUT:	929	OUTPUT:
1831	RETVAL	930	RETVAL
1832		931
1833	void	932	void
1834	aioreq_nice (int nice = 0)	933	aioreq_nice (int nice = 0)
1835	CODE:	934	CODE:
1836	nice = next_pri - nice;	935	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	936	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	937	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	938	next_pri = nice;
1840		939
1841	void	940	void
1842	flush ()	941	flush ()
1843	PROTOTYPE:	942	PROTOTYPE:
1844	CODE:	943	CODE:
1845	while (nreqs)	944	while (eio_nreqs ())
1846	{	945	{
1847	poll_wait ();	946	poll_wait ();
1848	poll_cb ();	947	poll_cb ();
1849	}	948	}
1850		949
…		…
1877	poll_wait()	976	poll_wait()
1878	PROTOTYPE:	977	PROTOTYPE:
1879	CODE:	978	CODE:
1880	poll_wait ();	979	poll_wait ();
1881		980
1882	void
1883	setsig (int signum = SIGIO)
1884	PROTOTYPE: ;$
1885	CODE:
1886	{
1887	if (block_sig_level)
1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1889
1890	X_LOCK (reslock);
1891	main_tid = pthread_self ();
1892	main_sig = signum;
1893	X_UNLOCK (reslock);
1894
1895	if (main_sig && npending)
1896	pthread_kill (main_tid, main_sig);
1897	}
1898
1899	void
1900	aio_block (SV *cb)
1901	PROTOTYPE: &
1902	PPCODE:
1903	{
1904	int count;
1905
1906	block_sig ();
1907	PUSHMARK (SP);
1908	PUTBACK;
1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1910	SPAGAIN;
1911	unblock_sig ();
1912
1913	if (SvTRUE (ERRSV))
1914	croak (0);
1915
1916	XSRETURN (count);
1917	}
1918
1919	int	981	int
1920	nreqs()	982	nreqs()
1921	PROTOTYPE:	983	PROTOTYPE:
1922	CODE:	984	CODE:
1923	RETVAL = nreqs;	985	RETVAL = eio_nreqs ();
1924	OUTPUT:	986	OUTPUT:
1925	RETVAL	987	RETVAL
1926		988
1927	int	989	int
1928	nready()	990	nready()
1929	PROTOTYPE:	991	PROTOTYPE:
1930	CODE:	992	CODE:
1931	RETVAL = get_nready ();	993	RETVAL = eio_nready ();
1932	OUTPUT:	994	OUTPUT:
1933	RETVAL	995	RETVAL
1934		996
1935	int	997	int
1936	npending()	998	npending()
1937	PROTOTYPE:	999	PROTOTYPE:
1938	CODE:	1000	CODE:
1939	RETVAL = get_npending ();	1001	RETVAL = eio_npending ();
1940	OUTPUT:	1002	OUTPUT:
1941	RETVAL	1003	RETVAL
1942		1004
1943	int	1005	int
1944	nthreads()	1006	nthreads()
…		…
1948	RETVAL = started;	1010	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);	1011	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1012	OUTPUT:
1951	RETVAL	1013	RETVAL
1952		1014
		1015	void _on_next_submit (SV *cb)
		1016	CODE:
		1017	SvREFCNT_dec (on_next_submit);
		1018	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1019
1953	PROTOTYPES: DISABLE	1020	PROTOTYPES: DISABLE
1954		1021
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1022	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		1023
1957	void	1024	void
1958	cancel (aio_req_ornot req)	1025	cancel (aio_req_ornot req)
1959	CODE:	1026	CODE:
1960	req_cancel (req);	1027	eio_cancel (req);
1961		1028
1962	void	1029	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1030	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1964	CODE:	1031	CODE:
1965	SvREFCNT_dec (req->callback);	1032	SvREFCNT_dec (req->callback);
…		…
1970	void	1037	void
1971	add (aio_req grp, ...)	1038	add (aio_req grp, ...)
1972	PPCODE:	1039	PPCODE:
1973	{	1040	{
1974	int i;	1041	int i;
1975	aio_req req;
1976
1977	if (main_sig && !block_sig_level)
1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1979		1042
1980	if (grp->int1 == 2)	1043	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1044	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		1045
1983	for (i = 1; i < items; ++i )	1046	for (i = 1; i < items; ++i )
1984	{	1047	{
		1048	aio_req req;
		1049
1985	if (GIMME_V != G_VOID)	1050	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1051	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		1052
1988	req = SvAIO_REQ (ST (i));	1053	req = SvAIO_REQ (ST (i));
1989		1054
1990	if (req)	1055	if (req)
1991	{	1056	eio_grp_add (grp, req);
1992	++grp->size;
1993	req->grp = grp;
1994
1995	req->grp_prev = 0;
1996	req->grp_next = grp->grp_first;
1997
1998	if (grp->grp_first)
1999	grp->grp_first->grp_prev = req;
2000
2001	grp->grp_first = req;
2002	}
2003	}	1057	}
2004	}	1058	}
2005		1059
2006	void	1060	void
2007	cancel_subs (aio_req_ornot req)	1061	cancel_subs (aio_req_ornot req)
…		…
2032	grp->errorno = errorno;	1086	grp->errorno = errorno;
2033		1087
2034	void	1088	void
2035	limit (aio_req grp, int limit)	1089	limit (aio_req grp, int limit)
2036	CODE:	1090	CODE:
2037	grp->int2 = limit;	1091	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		1092
2040	void	1093	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	1094	feed (aio_req grp, SV *callback=&PL_sv_undef)
2042	CODE:	1095	CODE:
2043	{	1096	{
…		…
2045	grp->sv2 = newSVsv (callback);	1098	grp->sv2 = newSVsv (callback);
2046		1099
2047	if (grp->int2 <= 0)	1100	if (grp->int2 <= 0)
2048	grp->int2 = 2;	1101	grp->int2 = 2;
2049		1102
2050	aio_grp_feed (grp);	1103	eio_grp_limit (grp, grp->int2);
2051	}	1104	}
2052		1105

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