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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.112 by root, Tue Apr 1 19:40:47 2008 UTC vs.
Revision 1.124 by root, Thu May 29 03:20:40 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
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	56	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	57	# define mkdir(a,b) mkdir (a)
56		58
57	#else	59	#else
58		60
59	# include "autoconf/config.h"
60	# include <sys/time.h>	61	# include <sys/time.h>
61	# include <sys/select.h>	62	# include <sys/select.h>
62	# include <unistd.h>	63	# include <unistd.h>
63	# include <utime.h>	64	# include <utime.h>
64	# include <signal.h>	65	# include <signal.h>
65	typedef struct dirent X_DIRENT;	66	# define EIO_STRUCT_DIRENT struct dirent
66		67
67	#endif	68	#endif
68		69
69	#if HAVE_SENDFILE	70	#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		71
95	/* use NV for 32 bit perls as it allows larger offsets */	72	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	73	#if IVSIZE >= 8
97	# define SvVAL64 SvIV	74	# define SvVAL64 SvIV
98	#else	75	#else
99	# define SvVAL64 SvNV	76	# define SvVAL64 SvNV
100	#endif	77	#endif
101		78
102	static HV *stash;	79	static HV *stash;
103
104	#define dBUF \
105	char *aio_buf; \
106	X_LOCK (wrklock); \
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
108	X_UNLOCK (wrklock); \
109	if (!aio_buf) \
110	return -1;
111
112	typedef SV SV8; /* byte-sv, used for argument-checking */	80	typedef SV SV8; /* byte-sv, used for argument-checking */
113
114	enum {
115	REQ_QUIT,
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};
131		81
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		84
135	typedef struct aio_cb	85	#define EIO_REQ_MEMBERS \
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;	86	SV *callback; \
140	SV *sv1, *sv2;	87	SV *sv1, *sv2; \
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;	88	STRLEN stroffset; \
148	int type;	89	SV *self;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		90
153	unsigned char flags;	91	#define EIO_NO_WRAPPERS 1
154	unsigned char pri;
155		92
156	SV *self; /* the perl counterpart of this request, if any */	93	#include "libeio/eio.h"
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94
158	} aio_cb;	95	static int req_invoke (eio_req *req);
		96	#define EIO_FINISH(req) req_invoke (req)
		97	static void aio_grp_feed (eio_req *grp);
		98	#define EIO_FEED(req) aio_grp_feed (req)
		99	static void req_destroy (eio_req *grp);
		100	#define EIO_DESTROY(req) req_destroy (req)
159		101
160	enum {	102	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	103	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};	104	};
165		105
		106	#include "libeio/eio.c"
		107
166	typedef aio_cb *aio_req;	108	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	109	typedef eio_req *aio_req_ornot;
168		110
169	enum {	111	static SV *on_next_submit;
170	PRI_MIN = -4,	112	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	113	static int max_outstanding;
172		114
173	DEFAULT_PRI = 0,
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig (void)
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig (void)
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };	115	static int respipe_osf [2], respipe [2] = { -1, -1 };
272		116
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready (void)
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending (void)
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads (void)
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb (void);
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	117	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	118	static void req_cancel (aio_req req);
		119
		120	static void want_poll (void)
		121	{
		122	/* write a dummy byte to the pipe so fh becomes ready */
		123	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		124	}
		125
		126	static void done_poll (void)
		127	{
		128	/* read any signals sent by the worker threads */
		129	char buf [4];
		130	while (respipe_read (respipe [0], buf, 4) == 4)
		131	;
		132	}
378		133
379	/* must be called at most once */	134	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	135	static SV *req_sv (aio_req req, const char *klass)
381	{	136	{
382	if (!req->self)	137	if (!req->self)
…		…
400	return mg ? (aio_req)mg->mg_ptr : 0;	155	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	156	}
402		157
403	static void aio_grp_feed (aio_req grp)	158	static void aio_grp_feed (aio_req grp)
404	{	159	{
405	block_sig ();	160	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	161	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	162	dSP;
414		163
415	ENTER;	164	ENTER;
416	SAVETMPS;	165	SAVETMPS;
417	PUSHMARK (SP);	166	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	167	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
419	PUTBACK;	168	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	169	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	170	SPAGAIN;
422	FREETMPS;	171	FREETMPS;
423	LEAVE;	172	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	173	}
434
435	unblock_sig ();
436	}	174	}
437		175
438	static void aio_grp_dec (aio_req grp)	176	static void req_submit (eio_req *req)
439	{	177	{
440	--grp->size;	178	eio_submit (req);
441		179
442	/* call feeder, if applicable */	180	if (on_next_submit)
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	181	{
448	block_sig ();	182	dSP;
		183	SV *cb = sv_2mortal (on_next_submit);
449		184
450	if (!req_invoke (grp))	185	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		186
457	req_destroy (grp);	187	PUSHMARK (SP);
458	unblock_sig ();	188	PUTBACK;
		189	call_sv (cb, G_DISCARD | G_EVAL);
459	}	190	}
460	}	191	}
461		192
462	static int req_invoke (aio_req req)	193	static int req_invoke (eio_req *req)
463	{	194	{
464	dSP;	195	dSP;
465		196
466	if (req->flags & FLAG_SV2_RO_OFF)	197	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	198	SvREADONLY_off (req->sv2);
468		199
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	200	if (!EIO_CANCELLED (req) && SvOK (req->callback))
470	{	201	{
471	ENTER;	202	ENTER;
472	SAVETMPS;	203	SAVETMPS;
473	PUSHMARK (SP);	204	PUSHMARK (SP);
474	EXTEND (SP, 1);	205	EXTEND (SP, 1);
475		206
476	switch (req->type)	207	switch (req->type)
477	{	208	{
478	case REQ_READDIR:	209	case EIO_READDIR:
479	{	210	{
480	SV *rv = &PL_sv_undef;	211	SV *rv = &PL_sv_undef;
481		212
482	if (req->result >= 0)	213	if (req->result >= 0)
483	{	214	{
…		…
500		231
501	PUSHs (rv);	232	PUSHs (rv);
502	}	233	}
503	break;	234	break;
504		235
505	case REQ_OPEN:	236	case EIO_OPEN:
506	{	237	{
507	/* convert fd to fh */	238	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	239	SV *fh = &PL_sv_undef;
509		240
510	if (req->result >= 0)	241	if (req->result >= 0)
…		…
531		262
532	PUSHs (fh);	263	PUSHs (fh);
533	}	264	}
534	break;	265	break;
535		266
536	case REQ_GROUP:	267	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	268	req->int1 = 2; /* mark group as finished */
538		269
539	if (req->sv1)	270	if (req->sv1)
540	{	271	{
541	int i;	272	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	276	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	277	PUSHs (*av_fetch (av, i, 0));
547	}	278	}
548	break;	279	break;
549		280
550	case REQ_NOP:	281	case EIO_NOP:
551	case REQ_BUSY:	282	case EIO_BUSY:
552	break;	283	break;
553		284
554	case REQ_READLINK:	285	case EIO_READLINK:
555	if (req->result > 0)	286	if (req->result > 0)
556	{	287	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	288	break;
562		289
563	case REQ_STAT:	290	case EIO_STAT:
564	case REQ_LSTAT:	291	case EIO_LSTAT:
565	case REQ_FSTAT:	292	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	293	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	294	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	295	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	296	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;	297	break;
571		298
572	case REQ_READ:	299	case EIO_READ:
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	300	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	301	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	302	PUSHs (sv_2mortal (newSViv (req->result)));
576	break;	303	break;
577		304
		305	case EIO_DUP2:
		306	if (req->result > 0)
		307	req->result = 0;
		308	/* FALLTHROUGH */
		309
578	default:	310	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	311	PUSHs (sv_2mortal (newSViv (req->result)));
580	break;	312	break;
581	}	313	}
582		314
…		…
590	LEAVE;	322	LEAVE;
591		323
592	PUTBACK;	324	PUTBACK;
593	}	325	}
594		326
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	327	return !!SvTRUE (ERRSV);
610	}	328	}
611		329
612	static void req_destroy (aio_req req)	330	static void req_destroy (aio_req req)
613	{	331	{
614	if (req->self)	332	if (req->self)
…		…
619		337
620	SvREFCNT_dec (req->sv1);	338	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	339	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	340	SvREFCNT_dec (req->callback);
623		341
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	342	Safefree (req);
628	}	343	}
629		344
630	static void req_cancel_subs (aio_req grp)	345	static void req_cancel_subs (aio_req grp)
631	{	346	{
632	aio_req sub;	347	aio_req sub;
633		348
634	if (grp->type != REQ_GROUP)	349	if (grp->type != EIO_GROUP)
635	return;	350	return;
636		351
637	SvREFCNT_dec (grp->sv2);	352	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	353	grp->sv2 = 0;
639		354
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	355	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}	356	}
650		357
651	#ifdef USE_SOCKETS_AS_HANDLES	358	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))	359	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else	360	#else
…		…
690		397
691	respipe_osf [0] = TO_SOCKET (respipe [0]);	398	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);	399	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}	400	}
694		401
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread (void)
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait (void)	402	static void poll_wait (void)
791	{	403	{
792	fd_set rfd;	404	fd_set rfd;
793		405
794	while (nreqs)	406	while (eio_nreqs ())
795	{	407	{
796	int size;	408	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	409
		410	X_LOCK (reslock);
798	size = res_queue.size;	411	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	412	X_UNLOCK (reslock);
800		413
801	if (size)	414	if (size)
802	return;	415	return;
803		416
804	maybe_start_thread ();	417	etp_maybe_start_thread ();
805		418
806	FD_ZERO (&rfd);	419	FD_ZERO (&rfd);
807	FD_SET (respipe [0], &rfd);	420	FD_SET (respipe [0], &rfd);
808		421
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);	422	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	423	}
811	}	424	}
812		425
813	static int poll_cb (void)	426	static int poll_cb (void)
814	{	427	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	428	for (;;)
828	{	429	{
829	for (;;)	430	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		431
833	X_LOCK (reslock);	432	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	433	croak (0);
868	}
869		434
870	count++;	435	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	436	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		437
890	poll_wait ();	438	poll_wait ();
891
892	++maxreqs;
893	}	439	}
894
895	unblock_sig ();
896	return count;
897	}
898
899	/*****************************************************************************/
900	/* work around various missing functions */
901
902	#if !HAVE_PREADWRITE
903	# define pread aio_pread
904	# define pwrite aio_pwrite
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079
1080	if (res < 0
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182
1183	/*****************************************************************************/
1184
1185	X_THREAD_PROC (aio_proc)
1186	{
1187	aio_req req;
1188	struct timespec ts;
1189	worker *self = (worker *)thr_arg;
1190
1191	/* try to distribute timeouts somewhat randomly */
1192	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1193
1194	for (;;)
1195	{
1196	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1197
1198	X_LOCK (reqlock);
1199
1200	for (;;)
1201	{
1202	self->req = req = reqq_shift (&req_queue);
1203
1204	if (req)
1205	break;
1206
1207	++idle;
1208
1209	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1210	== ETIMEDOUT)
1211	{
1212	if (idle > max_idle)
1213	{
1214	--idle;
1215	X_UNLOCK (reqlock);
1216	X_LOCK (wrklock);
1217	--started;
1218	X_UNLOCK (wrklock);
1219	goto quit;
1220	}
1221
1222	/* we are allowed to idle, so do so without any timeout */
1223	X_COND_WAIT (reqwait, reqlock);
1224	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1225	}
1226
1227	--idle;
1228	}
1229
1230	--nready;
1231
1232	X_UNLOCK (reqlock);
1233
1234	errno = 0; /* strictly unnecessary */
1235
1236	if (!(req->flags & FLAG_CANCELLED))
1237	switch (req->type)
1238	{
1239	case REQ_READ: req->result = req->offs >= 0
1240	? pread (req->int1, req->ptr1, req->size, req->offs)
1241	: read (req->int1, req->ptr1, req->size); break;
1242	case REQ_WRITE: req->result = req->offs >= 0
1243	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1244	: write (req->int1, req->ptr1, req->size); break;
1245
1246	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1247	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1248
1249	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1252
1253	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1254	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1255	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1256	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1257	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1258	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1259
1260	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1261	case REQ_CLOSE: req->result = close (req->int1); break;
1262	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1263	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1264	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1265	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1266	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1267	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1268	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1269	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1270
1271	case REQ_SYNC: req->result = 0; sync (); break;
1272	case REQ_FSYNC: req->result = fsync (req->int1); break;
1273	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1274
1275	case REQ_READDIR: scandir_ (req, self); break;
1276
1277	case REQ_BUSY:
1278	#ifdef _WIN32
1279	Sleep (req->nv1 * 1000.);
1280	#else
1281	{
1282	struct timeval tv;
1283
1284	tv.tv_sec = req->nv1;
1285	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1286
1287	req->result = select (0, 0, 0, 0, &tv);
1288	}
1289	#endif
1290	break;
1291
1292	case REQ_UTIME:
1293	case REQ_FUTIME:
1294	{
1295	struct timeval tv[2];
1296	struct timeval *times;
1297
1298	if (req->nv1 != -1. || req->nv2 != -1.)
1299	{
1300	tv[0].tv_sec = req->nv1;
1301	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1302	tv[1].tv_sec = req->nv2;
1303	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1304
1305	times = tv;
1306	}
1307	else
1308	times = 0;
1309
1310
1311	req->result = req->type == REQ_FUTIME
1312	? futimes (req->int1, times)
1313	: utimes (req->ptr1, times);
1314	}
1315
1316	case REQ_GROUP:
1317	case REQ_NOP:
1318	break;
1319
1320	case REQ_QUIT:
1321	goto quit;
1322
1323	default:
1324	req->result = -1;
1325	break;
1326	}
1327
1328	req->errorno = errno;
1329
1330	X_LOCK (reslock);
1331
1332	++npending;
1333
1334	if (!reqq_push (&res_queue, req))
1335	{
1336	/* write a dummy byte to the pipe so fh becomes ready */
1337	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1338
1339	/* optionally signal the main thread asynchronously */
1340	if (main_sig)
1341	pthread_kill (main_tid, main_sig);
1342	}
1343
1344	self->req = 0;
1345	worker_clear (self);
1346
1347	X_UNLOCK (reslock);
1348	}
1349
1350	quit:
1351	X_LOCK (wrklock);
1352	worker_free (self);
1353	X_UNLOCK (wrklock);
1354
1355	return 0;
1356	}
1357
1358	/*****************************************************************************/
1359
1360	static void atfork_prepare (void)
1361	{
1362	X_LOCK (wrklock);
1363	X_LOCK (reqlock);
1364	X_LOCK (reslock);
1365	#if !HAVE_PREADWRITE
1366	X_LOCK (preadwritelock);
1367	#endif
1368	#if !HAVE_READDIR_R
1369	X_LOCK (readdirlock);
1370	#endif
1371	}
1372
1373	static void atfork_parent (void)
1374	{
1375	#if !HAVE_READDIR_R
1376	X_UNLOCK (readdirlock);
1377	#endif
1378	#if !HAVE_PREADWRITE
1379	X_UNLOCK (preadwritelock);
1380	#endif
1381	X_UNLOCK (reslock);
1382	X_UNLOCK (reqlock);
1383	X_UNLOCK (wrklock);
1384	}	440	}
1385		441
1386	static void atfork_child (void)	442	static void atfork_child (void)
1387	{	443	{
1388	aio_req prv;
1389
1390	while (prv = reqq_shift (&req_queue))
1391	req_destroy (prv);
1392
1393	while (prv = reqq_shift (&res_queue))
1394	req_destroy (prv);
1395
1396	while (wrk_first.next != &wrk_first)
1397	{
1398	worker *wrk = wrk_first.next;
1399
1400	if (wrk->req)
1401	req_destroy (wrk->req);
1402
1403	worker_clear (wrk);
1404	worker_free (wrk);
1405	}
1406
1407	started = 0;
1408	idle = 0;
1409	nreqs = 0;
1410	nready = 0;
1411	npending = 0;
1412
1413	create_respipe ();	444	create_respipe ();
1414
1415	atfork_parent ();
1416	}	445	}
1417		446
1418	#define dREQ \	447	#define dREQ \
1419	aio_req req; \	448	aio_req req; \
1420	int req_pri = next_pri; \	449	int req_pri = next_pri; \
1421	next_pri = DEFAULT_PRI + PRI_BIAS; \	450	next_pri = EIO_PRI_DEFAULT; \
1422	\	451	\
1423	if (SvOK (callback) && !SvROK (callback)) \	452	if (SvOK (callback) && !SvROK (callback)) \
1424	croak ("callback must be undef or of reference type"); \	453	croak ("callback must be undef or of reference type"); \
1425	\	454	\
1426	Newz (0, req, 1, aio_cb); \	455	Newz (0, req, 1, eio_req); \
1427	if (!req) \	456	if (!req) \
1428	croak ("out of memory during aio_req allocation"); \	457	croak ("out of memory during eio_req allocation"); \
1429	\	458	\
1430	req->callback = newSVsv (callback); \	459	req->callback = newSVsv (callback); \
1431	req->pri = req_pri	460	req->pri = req_pri
1432		461
1433	#define REQ_SEND \	462	#define REQ_SEND \
1434	req_send (req); \	463	req_submit (req); \
1435	\	464	\
1436	if (GIMME_V != G_VOID) \	465	if (GIMME_V != G_VOID) \
1437	XPUSHs (req_sv (req, AIO_REQ_KLASS));	466	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1438		467
1439	MODULE = IO::AIO PACKAGE = IO::AIO	468	MODULE = IO::AIO PACKAGE = IO::AIO
…		…
1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	476	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	477	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	478	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	479	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	480	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1452	#ifdef _WIN32	481	#ifndef _WIN32
1453	X_MUTEX_CHECK (wrklock);
1454	X_MUTEX_CHECK (reslock);
1455	X_MUTEX_CHECK (reqlock);
1456	X_MUTEX_CHECK (reqwait);
1457	X_MUTEX_CHECK (preadwritelock);
1458	X_MUTEX_CHECK (readdirlock);
1459
1460	X_COND_CHECK (reqwait);
1461	#else
1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	482	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464	#endif	483	#endif
1465		484
1466	create_respipe ();	485	create_respipe ();
1467		486
1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	487	if (eio_init (want_poll, done_poll) < 0)
		488	croak ("IO::AIO: unable to initialise eio library");
		489
		490	/* atfork child called in fifo order, so before eio's handler */
		491	X_THREAD_ATFORK (0, 0, atfork_child);
1469	}	492	}
1470		493
1471	void	494	void
1472	max_poll_reqs (int nreqs)	495	max_poll_reqs (int nreqs)
1473	PROTOTYPE: $	496	PROTOTYPE: $
1474	CODE:	497	CODE:
1475	max_poll_reqs = nreqs;	498	eio_set_max_poll_reqs (nreqs);
1476		499
1477	void	500	void
1478	max_poll_time (double nseconds)	501	max_poll_time (double nseconds)
1479	PROTOTYPE: $	502	PROTOTYPE: $
1480	CODE:	503	CODE:
1481	max_poll_time = nseconds * AIO_TICKS;	504	eio_set_max_poll_time (nseconds);
1482		505
1483	void	506	void
1484	min_parallel (int nthreads)	507	min_parallel (int nthreads)
1485	PROTOTYPE: $	508	PROTOTYPE: $
		509	CODE:
		510	eio_set_min_parallel (nthreads);
1486		511
1487	void	512	void
1488	max_parallel (int nthreads)	513	max_parallel (int nthreads)
1489	PROTOTYPE: $	514	PROTOTYPE: $
		515	CODE:
		516	eio_set_max_parallel (nthreads);
1490		517
1491	void	518	void
1492	max_idle (int nthreads)	519	max_idle (int nthreads)
1493	PROTOTYPE: $	520	PROTOTYPE: $
1494	CODE:	521	CODE:
1495	set_max_idle (nthreads);	522	eio_set_max_idle (nthreads);
1496		523
1497	int	524	void
1498	max_outstanding (int maxreqs)	525	max_outstanding (int maxreqs)
1499	PROTOTYPE: $	526	PROTOTYPE: $
1500	CODE:	527	CODE:
1501	RETVAL = max_outstanding;
1502	max_outstanding = maxreqs;	528	max_outstanding = maxreqs;
1503	OUTPUT:
1504	RETVAL
1505		529
1506	void	530	void
1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	531	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1508	PROTOTYPE: $$$;$	532	PROTOTYPE: $$$;$
1509	PPCODE:	533	PPCODE:
1510	{	534	{
1511	dREQ;	535	dREQ;
1512		536
1513	req->type = REQ_OPEN;	537	req->type = EIO_OPEN;
1514	req->sv1 = newSVsv (pathname);	538	req->sv1 = newSVsv (pathname);
1515	req->ptr1 = SvPVbyte_nolen (req->sv1);	539	req->ptr1 = SvPVbyte_nolen (req->sv1);
1516	req->int1 = flags;	540	req->int1 = flags;
1517	req->mode = mode;	541	req->int2 = mode;
1518		542
1519	REQ_SEND;	543	REQ_SEND;
1520	}	544	}
1521		545
1522	void	546	void
1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	547	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $;$	548	PROTOTYPE: $;$
1525	ALIAS:	549	ALIAS:
1526	aio_fsync = REQ_FSYNC	550	aio_fsync = EIO_FSYNC
1527	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = EIO_FDATASYNC
1528	PPCODE:	552	PPCODE:
1529	{	553	{
1530	dREQ;	554	dREQ;
1531		555
1532	req->type = ix;	556	req->type = ix;
…		…
1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	558	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1535		559
1536	REQ_SEND (req);	560	REQ_SEND (req);
1537	}	561	}
1538		562
1539	int
1540	_dup (int fd)
1541	PROTOTYPE: $
1542	CODE:
1543	RETVAL = dup (fd);
1544	OUTPUT:
1545	RETVAL
1546
1547	void	563	void
1548	_aio_close (int fd, SV *callback=&PL_sv_undef)	564	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1549	PROTOTYPE: $;$	565	PROTOTYPE: $;$
1550	PPCODE:	566	PPCODE:
1551	{	567	{
		568	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1552	dREQ;	569	dREQ;
1553		570
		571	if (close_pipe < 0)
		572	{
		573	int pipefd [2];
		574
		575	if (pipe (pipefd) < 0
		576	|| close (pipefd [1]) < 0
		577	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		578	abort (); /*D*/
		579
		580	close_pipe = pipefd [0];
		581	}
		582
1554	req->type = REQ_CLOSE;	583	req->type = EIO_DUP2;
1555	req->int1 = fd;	584	req->int1 = close_pipe;
		585	req->sv2 = newSVsv (fh);
		586	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1556		587
1557	REQ_SEND (req);	588	REQ_SEND (req);
1558	}	589	}
1559		590
1560	void	591	void
1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	592	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1562	ALIAS:	593	ALIAS:
1563	aio_read = REQ_READ	594	aio_read = EIO_READ
1564	aio_write = REQ_WRITE	595	aio_write = EIO_WRITE
1565	PROTOTYPE: $$$$$;$	596	PROTOTYPE: $$$$$;$
1566	PPCODE:	597	PPCODE:
1567	{	598	{
1568	STRLEN svlen;	599	STRLEN svlen;
1569	char *svptr = SvPVbyte (data, svlen);	600	char *svptr = SvPVbyte (data, svlen);
…		…
1576	dataoffset += svlen;	607	dataoffset += svlen;
1577		608
1578	if (dataoffset < 0 || dataoffset > svlen)	609	if (dataoffset < 0 || dataoffset > svlen)
1579	croak ("dataoffset outside of data scalar");	610	croak ("dataoffset outside of data scalar");
1580		611
1581	if (ix == REQ_WRITE)	612	if (ix == EIO_WRITE)
1582	{	613	{
1583	/* write: check length and adjust. */	614	/* write: check length and adjust. */
1584	if (!SvOK (length) || len + dataoffset > svlen)	615	if (!SvOK (length) || len + dataoffset > svlen)
1585	len = svlen - dataoffset;	616	len = svlen - dataoffset;
1586	}	617	}
…		…
1596	{	627	{
1597	dREQ;	628	dREQ;
1598		629
1599	req->type = ix;	630	req->type = ix;
1600	req->sv1 = newSVsv (fh);	631	req->sv1 = newSVsv (fh);
1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	632	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1602	: IoOFP (sv_2io (fh)));	633	: IoOFP (sv_2io (fh)));
1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	634	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604	req->size = len;	635	req->size = len;
1605	req->sv2 = SvREFCNT_inc (data);	636	req->sv2 = SvREFCNT_inc (data);
1606	req->ptr1 = (char *)svptr + dataoffset;	637	req->ptr2 = (char *)svptr + dataoffset;
1607	req->stroffset = dataoffset;	638	req->stroffset = dataoffset;
1608		639
1609	if (!SvREADONLY (data))	640	if (!SvREADONLY (data))
1610	{	641	{
1611	SvREADONLY_on (data);	642	SvREADONLY_on (data);
…		…
1622	PPCODE:	653	PPCODE:
1623	{	654	{
1624	SV *data;	655	SV *data;
1625	dREQ;	656	dREQ;
1626		657
1627	data = newSV (NAME_MAX);
1628	SvPOK_on (data);
1629
1630	req->type = REQ_READLINK;	658	req->type = EIO_READLINK;
1631	req->sv1 = newSVsv (path);	659	req->sv1 = newSVsv (path);
1632	req->ptr2 = SvPVbyte_nolen (req->sv1);	660	req->ptr1 = SvPVbyte_nolen (req->sv1);
1633	req->sv2 = data;
1634	req->ptr1 = SvPVbyte_nolen (data);
1635		661
1636	REQ_SEND;	662	REQ_SEND;
1637	}	663	}
1638		664
1639	void	665	void
…		…
1641	PROTOTYPE: $$$$;$	667	PROTOTYPE: $$$$;$
1642	PPCODE:	668	PPCODE:
1643	{	669	{
1644	dREQ;	670	dREQ;
1645		671
1646	req->type = REQ_SENDFILE;	672	req->type = EIO_SENDFILE;
1647	req->sv1 = newSVsv (out_fh);	673	req->sv1 = newSVsv (out_fh);
1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1649	req->sv2 = newSVsv (in_fh);	675	req->sv2 = newSVsv (in_fh);
1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	676	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1651	req->offs = SvVAL64 (in_offset);	677	req->offs = SvVAL64 (in_offset);
…		…
1659	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1660	PPCODE:	686	PPCODE:
1661	{	687	{
1662	dREQ;	688	dREQ;
1663		689
1664	req->type = REQ_READAHEAD;	690	req->type = EIO_READAHEAD;
1665	req->sv1 = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1667	req->offs = SvVAL64 (offset);	693	req->offs = SvVAL64 (offset);
1668	req->size = length;	694	req->size = length;
1669		695
…		…
1671	}	697	}
1672		698
1673	void	699	void
1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	700	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675	ALIAS:	701	ALIAS:
1676	aio_stat = REQ_STAT	702	aio_stat = EIO_STAT
1677	aio_lstat = REQ_LSTAT	703	aio_lstat = EIO_LSTAT
1678	PPCODE:	704	PPCODE:
1679	{	705	{
1680	dREQ;	706	dREQ;
1681		707
1682	req->ptr2 = malloc (sizeof (Stat_t));
1683	if (!req->ptr2)
1684	{
1685	req_destroy (req);
1686	croak ("out of memory during aio_stat statdata allocation");
1687	}
1688
1689	req->flags |= FLAG_PTR2_FREE;
1690	req->sv1 = newSVsv (fh_or_path);	708	req->sv1 = newSVsv (fh_or_path);
1691		709
1692	if (SvPOK (fh_or_path))	710	if (SvPOK (req->sv1))
1693	{	711	{
1694	req->type = ix;	712	req->type = ix;
1695	req->ptr1 = SvPVbyte_nolen (req->sv1);	713	req->ptr1 = SvPVbyte_nolen (req->sv1);
1696	}	714	}
1697	else	715	else
1698	{	716	{
1699	req->type = REQ_FSTAT;	717	req->type = EIO_FSTAT;
1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	718	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1701	}	719	}
1702		720
1703	REQ_SEND;	721	REQ_SEND;
1704	}	722	}
…		…
1711		729
1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	730	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	731	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714	req->sv1 = newSVsv (fh_or_path);	732	req->sv1 = newSVsv (fh_or_path);
1715		733
1716	if (SvPOK (fh_or_path))	734	if (SvPOK (req->sv1))
1717	{	735	{
1718	req->type = REQ_UTIME;	736	req->type = EIO_UTIME;
1719	req->ptr1 = SvPVbyte_nolen (req->sv1);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
1720	}	738	}
1721	else	739	else
1722	{	740	{
1723	req->type = REQ_FUTIME;	741	req->type = EIO_FUTIME;
1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725	}	743	}
1726		744
1727	REQ_SEND;	745	REQ_SEND;
1728	}	746	}
…		…
1734	dREQ;	752	dREQ;
1735		753
1736	req->sv1 = newSVsv (fh_or_path);	754	req->sv1 = newSVsv (fh_or_path);
1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	755	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738		756
1739	if (SvPOK (fh_or_path))	757	if (SvPOK (req->sv1))
1740	{	758	{
1741	req->type = REQ_TRUNCATE;	759	req->type = EIO_TRUNCATE;
1742	req->ptr1 = SvPVbyte_nolen (req->sv1);	760	req->ptr1 = SvPVbyte_nolen (req->sv1);
1743	}	761	}
1744	else	762	else
1745	{	763	{
1746	req->type = REQ_FTRUNCATE;	764	req->type = EIO_FTRUNCATE;
1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	765	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748	}	766	}
1749		767
1750	REQ_SEND;	768	REQ_SEND;
1751	}	769	}
1752		770
1753	void	771	void
1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	772	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		773	ALIAS:
		774	aio_chmod = EIO_CHMOD
		775	aio_mkdir = EIO_MKDIR
1755	PPCODE:	776	PPCODE:
1756	{	777	{
1757	dREQ;	778	dREQ;
1758		779
1759	req->mode = mode;	780	req->int2 = mode;
1760	req->sv1 = newSVsv (fh_or_path);	781	req->sv1 = newSVsv (fh_or_path);
1761		782
1762	if (SvPOK (fh_or_path))	783	if (SvPOK (req->sv1))
1763	{	784	{
1764	req->type = REQ_CHMOD;	785	req->type = ix;
1765	req->ptr1 = SvPVbyte_nolen (req->sv1);	786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1766	}	787	}
1767	else	788	else
1768	{	789	{
1769	req->type = REQ_FCHMOD;	790	req->type = EIO_FCHMOD;
1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	791	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771	}	792	}
1772		793
1773	REQ_SEND;	794	REQ_SEND;
1774	}	795	}
…		…
1781		802
1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784	req->sv1 = newSVsv (fh_or_path);	805	req->sv1 = newSVsv (fh_or_path);
1785		806
1786	if (SvPOK (fh_or_path))	807	if (SvPOK (req->sv1))
1787	{	808	{
1788	req->type = REQ_CHOWN;	809	req->type = EIO_CHOWN;
1789	req->ptr1 = SvPVbyte_nolen (req->sv1);	810	req->ptr1 = SvPVbyte_nolen (req->sv1);
1790	}	811	}
1791	else	812	else
1792	{	813	{
1793	req->type = REQ_FCHOWN;	814	req->type = EIO_FCHOWN;
1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795	}	816	}
1796		817
1797	REQ_SEND;	818	REQ_SEND;
1798	}	819	}
1799		820
1800	void	821	void
1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1802	ALIAS:	823	ALIAS:
1803	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1804	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1805	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1806	PPCODE:	827	PPCODE:
1807	{	828	{
1808	dREQ;	829	dREQ;
1809		830
1810	req->type = ix;	831	req->type = ix;
…		…
1813		834
1814	REQ_SEND;	835	REQ_SEND;
1815	}	836	}
1816		837
1817	void	838	void
1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_link = EIO_LINK
		842	aio_symlink = EIO_SYMLINK
		843	aio_rename = EIO_RENAME
1819	PPCODE:	844	PPCODE:
1820	{	845	{
1821	dREQ;	846	dREQ;
1822		847
		848	req->type = ix;
		849	req->sv1 = newSVsv (oldpath);
		850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
		853
		854	REQ_SEND;
		855	}
		856
		857	void
		858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
1823	req->type = REQ_MKDIR;	863	req->type = EIO_MKNOD;
1824	req->sv1 = newSVsv (pathname);	864	req->sv1 = newSVsv (pathname);
1825	req->ptr1 = SvPVbyte_nolen (req->sv1);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1826	req->mode = mode;
1827
1828	REQ_SEND;
1829	}
1830
1831	void
1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833	ALIAS:
1834	aio_link = REQ_LINK
1835	aio_symlink = REQ_SYMLINK
1836	aio_rename = REQ_RENAME
1837	PPCODE:
1838	{
1839	dREQ;
1840
1841	req->type = ix;
1842	req->sv2 = newSVsv (oldpath);
1843	req->ptr2 = SvPVbyte_nolen (req->sv2);
1844	req->sv1 = newSVsv (newpath);
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846
1847	REQ_SEND;
1848	}
1849
1850	void
1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1852	PPCODE:
1853	{
1854	dREQ;
1855
1856	req->type = REQ_MKNOD;
1857	req->sv1 = newSVsv (pathname);
1858	req->ptr1 = SvPVbyte_nolen (req->sv1);
1859	req->mode = (mode_t)mode;	866	req->int2 = (mode_t)mode;
1860	req->offs = dev;	867	req->offs = dev;
1861		868
1862	REQ_SEND;	869	REQ_SEND;
1863	}	870	}
1864		871
…		…
1866	aio_busy (double delay, SV *callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1867	PPCODE:	874	PPCODE:
1868	{	875	{
1869	dREQ;	876	dREQ;
1870		877
1871	req->type = REQ_BUSY;	878	req->type = EIO_BUSY;
1872	req->nv1 = delay < 0. ? 0. : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1873		880
1874	REQ_SEND;	881	REQ_SEND;
1875	}	882	}
1876		883
…		…
1879	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1880	PPCODE:	887	PPCODE:
1881	{	888	{
1882	dREQ;	889	dREQ;
1883		890
1884	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
1885		892
1886	req_send (req);	893	eio_submit (req);
1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1888	}	895	}
1889		896
1890	void	897	void
1891	aio_nop (SV *callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
1892	ALIAS:	899	ALIAS:
1893	aio_nop = REQ_NOP	900	aio_nop = EIO_NOP
1894	aio_sync = REQ_SYNC	901	aio_sync = EIO_SYNC
1895	PPCODE:	902	PPCODE:
1896	{	903	{
1897	dREQ;	904	dREQ;
1898		905
1899	req->type = ix;	906	req->type = ix;
…		…
1903		910
1904	int	911	int
1905	aioreq_pri (int pri = 0)	912	aioreq_pri (int pri = 0)
1906	PROTOTYPE: ;$	913	PROTOTYPE: ;$
1907	CODE:	914	CODE:
1908	RETVAL = next_pri - PRI_BIAS;	915	RETVAL = next_pri;
1909	if (items > 0)	916	if (items > 0)
1910	{	917	{
1911	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1912	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1913	next_pri = pri + PRI_BIAS;	920	next_pri = pri;
1914	}	921	}
1915	OUTPUT:	922	OUTPUT:
1916	RETVAL	923	RETVAL
1917		924
1918	void	925	void
1919	aioreq_nice (int nice = 0)	926	aioreq_nice (int nice = 0)
1920	CODE:	927	CODE:
1921	nice = next_pri - nice;	928	nice = next_pri - nice;
1922	if (nice < PRI_MIN) nice = PRI_MIN;	929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1923	if (nice > PRI_MAX) nice = PRI_MAX;	930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1924	next_pri = nice + PRI_BIAS;	931	next_pri = nice;
1925		932
1926	void	933	void
1927	flush ()	934	flush ()
1928	PROTOTYPE:	935	PROTOTYPE:
1929	CODE:	936	CODE:
1930	while (nreqs)	937	while (eio_nreqs ())
1931	{	938	{
1932	poll_wait ();	939	poll_wait ();
1933	poll_cb ();	940	poll_cb ();
1934	}	941	}
1935		942
…		…
1962	poll_wait()	969	poll_wait()
1963	PROTOTYPE:	970	PROTOTYPE:
1964	CODE:	971	CODE:
1965	poll_wait ();	972	poll_wait ();
1966		973
1967	void
1968	setsig (int signum = SIGIO)
1969	PROTOTYPE: ;$
1970	CODE:
1971	{
1972	if (block_sig_level)
1973	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1974
1975	X_LOCK (reslock);
1976	main_tid = pthread_self ();
1977	main_sig = signum;
1978	X_UNLOCK (reslock);
1979
1980	if (main_sig && npending)
1981	pthread_kill (main_tid, main_sig);
1982	}
1983
1984	void
1985	aio_block (SV *cb)
1986	PROTOTYPE: &
1987	PPCODE:
1988	{
1989	int count;
1990
1991	block_sig ();
1992	PUSHMARK (SP);
1993	PUTBACK;
1994	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1995	unblock_sig ();
1996
1997	if (SvTRUE (ERRSV))
1998	croak (0);
1999
2000	XSRETURN (count);
2001	}
2002
2003	int	974	int
2004	nreqs()	975	nreqs()
2005	PROTOTYPE:	976	PROTOTYPE:
2006	CODE:	977	CODE:
2007	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
2008	OUTPUT:	979	OUTPUT:
2009	RETVAL	980	RETVAL
2010		981
2011	int	982	int
2012	nready()	983	nready()
2013	PROTOTYPE:	984	PROTOTYPE:
2014	CODE:	985	CODE:
2015	RETVAL = get_nready ();	986	RETVAL = eio_nready ();
2016	OUTPUT:	987	OUTPUT:
2017	RETVAL	988	RETVAL
2018		989
2019	int	990	int
2020	npending()	991	npending()
2021	PROTOTYPE:	992	PROTOTYPE:
2022	CODE:	993	CODE:
2023	RETVAL = get_npending ();	994	RETVAL = eio_npending ();
2024	OUTPUT:	995	OUTPUT:
2025	RETVAL	996	RETVAL
2026		997
2027	int	998	int
2028	nthreads()	999	nthreads()
2029	PROTOTYPE:	1000	PROTOTYPE:
2030	CODE:	1001	CODE:
2031	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1002	RETVAL = eio_nthreads ();
2032	RETVAL = started;
2033	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2034	OUTPUT:	1003	OUTPUT:
2035	RETVAL	1004	RETVAL
2036		1005
		1006	void _on_next_submit (SV *cb)
		1007	CODE:
		1008	SvREFCNT_dec (on_next_submit);
		1009	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1010
2037	PROTOTYPES: DISABLE	1011	PROTOTYPES: DISABLE
2038		1012
2039	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1013	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2040		1014
2041	void	1015	void
2042	cancel (aio_req_ornot req)	1016	cancel (aio_req_ornot req)
2043	CODE:	1017	CODE:
2044	req_cancel (req);	1018	eio_cancel (req);
2045		1019
2046	void	1020	void
2047	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1021	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2048	CODE:	1022	CODE:
2049	SvREFCNT_dec (req->callback);	1023	SvREFCNT_dec (req->callback);
…		…
2054	void	1028	void
2055	add (aio_req grp, ...)	1029	add (aio_req grp, ...)
2056	PPCODE:	1030	PPCODE:
2057	{	1031	{
2058	int i;	1032	int i;
2059	aio_req req;
2060
2061	if (main_sig && !block_sig_level)
2062	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2063		1033
2064	if (grp->int1 == 2)	1034	if (grp->int1 == 2)
2065	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1035	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2066		1036
2067	for (i = 1; i < items; ++i )	1037	for (i = 1; i < items; ++i )
2068	{	1038	{
		1039	aio_req req;
		1040
2069	if (GIMME_V != G_VOID)	1041	if (GIMME_V != G_VOID)
2070	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1042	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2071		1043
2072	req = SvAIO_REQ (ST (i));	1044	req = SvAIO_REQ (ST (i));
2073		1045
2074	if (req)	1046	if (req)
2075	{	1047	eio_grp_add (grp, req);
2076	++grp->size;
2077	req->grp = grp;
2078
2079	req->grp_prev = 0;
2080	req->grp_next = grp->grp_first;
2081
2082	if (grp->grp_first)
2083	grp->grp_first->grp_prev = req;
2084
2085	grp->grp_first = req;
2086	}
2087	}	1048	}
2088	}	1049	}
2089		1050
2090	void	1051	void
2091	cancel_subs (aio_req_ornot req)	1052	cancel_subs (aio_req_ornot req)
…		…
2116	grp->errorno = errorno;	1077	grp->errorno = errorno;
2117		1078
2118	void	1079	void
2119	limit (aio_req grp, int limit)	1080	limit (aio_req grp, int limit)
2120	CODE:	1081	CODE:
2121	grp->int2 = limit;	1082	eio_grp_limit (grp, limit);
2122	aio_grp_feed (grp);
2123		1083
2124	void	1084	void
2125	feed (aio_req grp, SV *callback=&PL_sv_undef)	1085	feed (aio_req grp, SV *callback=&PL_sv_undef)
2126	CODE:	1086	CODE:
2127	{	1087	{
…		…
2129	grp->sv2 = newSVsv (callback);	1089	grp->sv2 = newSVsv (callback);
2130		1090
2131	if (grp->int2 <= 0)	1091	if (grp->int2 <= 0)
2132	grp->int2 = 2;	1092	grp->int2 = 2;
2133		1093
2134	aio_grp_feed (grp);	1094	eio_grp_limit (grp, grp->int2);
2135	}	1095	}
2136		1096

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