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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 2008 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"
10
11	#include <stddef.h>	9	#include <stddef.h>
12	#include <stdlib.h>	10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define EIO_STRUCT_DIRENT Direntry_t
		21	# undef malloc
		22	# undef free
		23
		24	// perl overrides all those nice win32 functions
		25	# undef open
		26	# undef read
		27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
		56	#else
		57
		58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
23	#include <utime.h>	61	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	62	# include <signal.h>
31	# elif __hpux	63	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	64
33	# elif __solaris /* not yet */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif
38	#endif	65	#endif
39		66
40	/* number of seconds after which idle threads exit */	67	#define EIO_STRUCT_STAT Stat_t
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		68
51	/* use NV for 32 bit perls as it allows larger offsets */	69	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	70	#if IVSIZE >= 8
53	# define SvVAL64 SvIV	71	# define SvVAL64 SvIV
54	#else	72	#else
55	# define SvVAL64 SvNV	73	# define SvVAL64 SvNV
56	#endif	74	#endif
57		75
58	#define dBUF \	76	static HV *stash;
59	char *aio_buf; \
60	LOCK (wrklock); \
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
62	UNLOCK (wrklock); \
63	if (!aio_buf) \
64	return -1;
65
66	typedef SV SV8; /* byte-sv, used for argument-checking */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
67
68	enum {
69	REQ_QUIT,
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		78
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		81
88	typedef struct aio_cb	82	#define EIO_COMMON \
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;	83	SV *callback; \
93	SV *sv1, *sv2;	84	SV *sv1, *sv2; \
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;	85	STRLEN stroffset; \
101	int type;	86	SV *self
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		87
106	unsigned char flags;	88	#include "libeio/eio.h"
107	unsigned char pri;
108		89
109	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
111	} aio_cb;	92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
112		96
113	enum {	97	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};	99	};
118		100
		101	#include "libeio/eio.c"
		102
119	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
121		105
122	enum {	106	static unsigned int max_outstanding = 0x7fffffff;
123	PRI_MIN = -4,
124	PRI_MAX = 4,
125		107
126	DEFAULT_PRI = 0,
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
178		109
179	static unsigned int started, idle, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
180		111
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	112	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	113	static void req_cancel (aio_req req);
		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
331		128
332	/* must be called at most once */	129	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
334	{	131	{
335	if (!req->self)	132	if (!req->self)
…		…
353	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	151	}
355		152
356	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
357	{	154	{
358	block_sig ();	155	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	156	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	157	dSP;
367		158
368	ENTER;	159	ENTER;
369	SAVETMPS;	160	SAVETMPS;
370	PUSHMARK (SP);	161	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
372	PUTBACK;	163	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	165	SPAGAIN;
375	FREETMPS;	166	FREETMPS;
376	LEAVE;	167	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	168	}
387
388	unblock_sig ();
389	}	169	}
390		170
391	static void aio_grp_dec (aio_req grp)
392	{
393	--grp->size;
394
395	/* call feeder, if applicable */
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{
401	block_sig ();
402
403	if (!req_invoke (grp))
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409
410	req_destroy (grp);
411	unblock_sig ();
412	}
413	}
414
415	static int req_invoke (aio_req req)	171	static int req_invoke (eio_req *req)
416	{	172	{
417	dSP;	173	dSP;
418		174
419	if (req->flags & FLAG_SV2_RO_OFF)	175	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	176	SvREADONLY_off (req->sv2);
421		177
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
423	{	179	{
424	ENTER;	180	ENTER;
425	SAVETMPS;	181	SAVETMPS;
426	PUSHMARK (SP);	182	PUSHMARK (SP);
427	EXTEND (SP, 1);	183	EXTEND (SP, 1);
428		184
429	switch (req->type)	185	switch (req->type)
430	{	186	{
431	case REQ_READDIR:	187	case EIO_READDIR:
432	{	188	{
433	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
434		190
435	if (req->result >= 0)	191	if (req->result >= 0)
436	{	192	{
…		…
453		209
454	PUSHs (rv);	210	PUSHs (rv);
455	}	211	}
456	break;	212	break;
457		213
458	case REQ_OPEN:	214	case EIO_OPEN:
459	{	215	{
460	/* convert fd to fh */	216	/* convert fd to fh */
461	SV *fh;	217	SV *fh = &PL_sv_undef;
462		218
463	PUSHs (sv_2mortal (newSViv (req->result)));	219	if (req->result >= 0)
464	PUTBACK;	220	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	221	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
467		228
468	fh = POPs;	229	symlen = snprintf (
469	PUSHMARK (SP);	230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
470	XPUSHs (fh);	241	PUSHs (fh);
471	}	242	}
472	break;	243	break;
473		244
474	case REQ_GROUP:	245	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
476		247
477	if (req->sv1)	248	if (req->sv1)
478	{	249	{
479	int i;	250	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
485	}	256	}
486	break;	257	break;
487		258
488	case REQ_NOP:	259	case EIO_NOP:
489	case REQ_BUSY:	260	case EIO_BUSY:
490	break;	261	break;
491		262
492	case REQ_READLINK:	263	case EIO_READLINK:
493	if (req->result > 0)	264	if (req->result > 0)
494	{	265	{
495	SvCUR_set (req->sv2, req->result);	266	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;	267	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);	268	PUSHs (req->sv2);
498	}	269	}
499	break;	270	break;
500		271
501	case REQ_STAT:	272	case EIO_STAT:
502	case REQ_LSTAT:	273	case EIO_LSTAT:
503	case REQ_FSTAT:	274	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	276	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	278	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;	279	break;
509		280
510	case REQ_READ:	281	case EIO_READ:
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	283	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));	284	PUSHs (sv_2mortal (newSViv (req->result)));
514	break;	285	break;
515		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
516	default:	292	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
518	break;	294	break;
519	}	295	}
520		296
521	errno = req->errorno;	297	errno = req->errorno;
522		298
523	PUTBACK;	299	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	301	SPAGAIN;
526		302
527	FREETMPS;	303	FREETMPS;
528	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
529	}	307	}
530		308
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	309	return !!SvTRUE (ERRSV);
546	}	310	}
547		311
548	static void req_destroy (aio_req req)	312	static void req_destroy (aio_req req)
549	{	313	{
550	if (req->self)	314	if (req->self)
…		…
555		319
556	SvREFCNT_dec (req->sv1);	320	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	321	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
559		323
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	324	Safefree (req);
564	}	325	}
565		326
566	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
567	{	328	{
568	aio_req sub;	329	aio_req sub;
569		330
570	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
571	return;	332	return;
572		333
573	SvREFCNT_dec (grp->sv2);	334	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	335	grp->sv2 = 0;
575		336
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	338	}
579		339
580	static void req_cancel (aio_req req)	340	#ifdef USE_SOCKETS_AS_HANDLES
581	{	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
582	req->flags |= FLAG_CANCELLED;	342	#else
		343	# define TO_SOCKET(x) (x)
		344	#endif
583		345
584	req_cancel_subs (req);	346	static void
585	}	347	create_respipe (void)
586
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{	348	{
591	worker *wrk = calloc (1, sizeof (worker));	349	int old_readfd = respipe [0];
592		350
593	if (!wrk)	351	if (respipe [1] >= 0)
594	croak ("unable to allocate worker thread data");	352	respipe_close (TO_SOCKET (respipe [1]));
595		353
596	LOCK (wrklock);	354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
		358	#endif
		359	croak ("unable to initialize result pipe");
597		360
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	361	if (old_readfd >= 0)
599	{	362	{
600	wrk->prev = &wrk_first;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
601	wrk->next = wrk_first.next;	364	croak ("unable to initialize result pipe(2)");
602	wrk_first.next->prev = wrk;	365
603	wrk_first.next = wrk;	366	respipe_close (respipe [0]);
604	++started;	367	respipe [0] = old_readfd;
605	}	368	}
606	else
607	free (wrk);
608		369
609	UNLOCK (wrklock);	370	#ifdef _WIN32
610	}	371	int arg = 1;
		372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		374	#else
		375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		377	#endif
		378	croak ("unable to initialize result pipe(3)");
611		379
612	static void maybe_start_thread ()	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
613	{	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}	382	}
623		383
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	384	static void poll_wait (void)
683	{	385	{
684	fd_set rfd;	386	fd_set rfd;
685		387
686	while (nreqs)	388	while (eio_nreqs ())
687	{	389	{
688	int size;	390	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	391
		392	X_LOCK (reslock);
690	size = res_queue.size;	393	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	394	X_UNLOCK (reslock);
692		395
693	if (size)	396	if (size)
694	return;	397	return;
695		398
696	maybe_start_thread ();	399	maybe_start_thread ();
697		400
698	FD_ZERO(&rfd);	401	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	402	FD_SET (respipe [0], &rfd);
700		403
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	405	}
703	}	406	}
704		407
705	static int poll_cb ()	408	static int poll_cb (void)
706	{	409	{
707	dSP;	410	int res = eio_poll ();
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713		411
714	if (max_poll_time)	412	if (res > 0)
715	gettimeofday (&tv_start, 0);	413	croak (0);
716
717	block_sig ();
718
719	for (;;)
720	{
721	for (;;)
722	{
723	maybe_start_thread ();
724
725	LOCK (reslock);
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);
760	}
761
762	count++;
763	}
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781
782	poll_wait ();
783
784	++maxreqs;
785	}
786
787	unblock_sig ();
788	return count;
789	}
790
791	static void create_pipe ()
792	{
793	if (pipe (respipe))
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}
802
803	/*****************************************************************************/
804	/* work around various missing functions */
805
806	#if !HAVE_PREADWRITE
807	# define pread aio_pread
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{
819	ssize_t res;
820	off_t ooffset;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828		414
829	return res;	415	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085
1086	/*****************************************************************************/
1087
1088	static void *aio_proc (void *thr_arg)
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}	416	}
1314		417
1315	#define dREQ \	418	#define dREQ \
1316	aio_req req; \	419	aio_req req; \
1317	int req_pri = next_pri; \	420	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1319	\	422	\
1320	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
1321	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
1322	\	425	\
1323	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
1324	if (!req) \	427	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
1326	\	429	\
1327	req->callback = newSVsv (callback); \	430	req->callback = newSVsv (callback); \
1328	req->pri = req_pri	431	req->pri = req_pri
1329		432
1330	#define REQ_SEND \	433	#define REQ_SEND \
1331	req_send (req); \	434	eio_submit (req); \
1332	\	435	\
1333	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335		438
1336	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
1337		440
1338	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
1339		442
1340	BOOT:	443	BOOT:
1341	{	444	{
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
1343		446
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
		459
		460	X_COND_CHECK (reqwait);
		461	#else
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));	463	#endif
1351		464
1352	create_pipe ();	465	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
1354	}	469	}
1355		470
1356	void	471	void
1357	max_poll_reqs (int nreqs)	472	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	473	PROTOTYPE: $
1359	CODE:	474	CODE:
1360	max_poll_reqs = nreqs;	475	eio_set_max_poll_reqs (nreqs);
1361		476
1362	void	477	void
1363	max_poll_time (double nseconds)	478	max_poll_time (double nseconds)
1364	PROTOTYPE: $	479	PROTOTYPE: $
1365	CODE:	480	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	481	eio_set_max_poll_time (nseconds);
1367		482
1368	void	483	void
1369	min_parallel (int nthreads)	484	min_parallel (int nthreads)
1370	PROTOTYPE: $	485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
1371		488
1372	void	489	void
1373	max_parallel (int nthreads)	490	max_parallel (int nthreads)
1374	PROTOTYPE: $	491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
1375		494
1376	void	495	void
1377	max_idle (int nthreads)	496	max_idle (int nthreads)
1378	PROTOTYPE: $	497	PROTOTYPE: $
1379	CODE:	498	CODE:
1380	set_max_idle (nthreads);	499	eio_set_max_idle (nthreads);
1381		500
1382	int	501	void
1383	max_outstanding (int maxreqs)	502	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	503	PROTOTYPE: $
1385	CODE:	504	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	505	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		506
1391	void	507	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
1394	PPCODE:	510	PPCODE:
1395	{	511	{
1396	dREQ;	512	dREQ;
1397		513
1398	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	517	req->int1 = flags;
1402	req->mode = mode;	518	req->int2 = mode;
1403		519
1404	REQ_SEND;	520	REQ_SEND;
1405	}	521	}
1406		522
1407	void	523	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	525	PROTOTYPE: $;$
1410	ALIAS:	526	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
1414	PPCODE:	529	PPCODE:
1415	{	530	{
1416	dREQ;	531	dREQ;
1417		532
1418	req->type = ix;	533	req->type = ix;
…		…
1421		536
1422	REQ_SEND (req);	537	REQ_SEND (req);
1423	}	538	}
1424		539
1425	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:	570	ALIAS:
1428	aio_read = REQ_READ	571	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
1431	PPCODE:	574	PPCODE:
1432	{	575	{
1433	STRLEN svlen;	576	STRLEN svlen;
1434	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
…		…
1441	dataoffset += svlen;	584	dataoffset += svlen;
1442		585
1443	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	587	croak ("dataoffset outside of data scalar");
1445		588
1446	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
1447	{	590	{
1448	/* write: check length and adjust. */	591	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	593	len = svlen - dataoffset;
1451	}	594	}
…		…
1461	{	604	{
1462	dREQ;	605	dREQ;
1463		606
1464	req->type = ix;	607	req->type = ix;
1465	req->sv1 = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1467	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	612	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	615	req->stroffset = dataoffset;
1473		616
1474	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
1475	{	618	{
1476	SvREADONLY_on (data);	619	SvREADONLY_on (data);
…		…
1490	dREQ;	633	dREQ;
1491		634
1492	data = newSV (NAME_MAX);	635	data = newSV (NAME_MAX);
1493	SvPOK_on (data);	636	SvPOK_on (data);
1494		637
1495	req->type = REQ_READLINK;	638	req->type = EIO_READLINK;
1496	req->sv1 = newSVsv (path);	639	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);	640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;	641	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);	642	req->ptr2 = SvPVbyte_nolen (data);
1500		643
1501	REQ_SEND;	644	REQ_SEND;
1502	}	645	}
1503		646
1504	void	647	void
…		…
1506	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
1507	PPCODE:	650	PPCODE:
1508	{	651	{
1509	dREQ;	652	dREQ;
1510		653
1511	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1514	req->sv2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1516	req->offs = SvVAL64 (in_offset);	659	req->offs = SvVAL64 (in_offset);
…		…
1524	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1525	PPCODE:	668	PPCODE:
1526	{	669	{
1527	dREQ;	670	dREQ;
1528		671
1529	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1530	req->sv1 = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1532	req->offs = SvVAL64 (offset);	675	req->offs = SvVAL64 (offset);
1533	req->size = length;	676	req->size = length;
1534		677
…		…
1536	}	679	}
1537		680
1538	void	681	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:	683	ALIAS:
1541	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1542	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1543	PPCODE:	686	PPCODE:
1544	{	687	{
1545	dREQ;	688	dREQ;
1546		689
1547	req->ptr2 = malloc (sizeof (Stat_t));	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1548	if (!req->ptr2)	691	if (!req->ptr2)
1549	{	692	{
1550	req_destroy (req);	693	req_destroy (req);
1551	croak ("out of memory during aio_stat statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1552	}	695	}
1553		696
1554	req->flags |= FLAG_PTR2_FREE;	697	req->flags |= EIO_FLAG_PTR2_FREE;
1555	req->sv1 = newSVsv (fh_or_path);	698	req->sv1 = newSVsv (fh_or_path);
1556		699
1557	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1558	{	701	{
1559	req->type = ix;	702	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	704	}
1562	else	705	else
1563	{	706	{
1564	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1566	}	709	}
1567		710
1568	REQ_SEND;	711	REQ_SEND;
1569	}	712	}
…		…
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	722	req->sv1 = newSVsv (fh_or_path);
1580		723
1581	if (SvPOK (fh_or_path))	724	if (SvPOK (fh_or_path))
1582	{	725	{
1583	req->type = REQ_UTIME;	726	req->type = EIO_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);	727	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}	728	}
1586	else	729	else
1587	{	730	{
1588	req->type = REQ_FUTIME;	731	req->type = EIO_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}	733	}
1591		734
1592	REQ_SEND;	735	REQ_SEND;
1593	}	736	}
1594		737
1595	void	738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
1597	PPCODE:	767	PPCODE:
1598	{	768	{
1599	dREQ;	769	dREQ;
1600		770
		771	req->type = ix;
1601	req->mode = mode;	772	req->int2 = mode;
1602	req->sv1 = newSVsv (fh_or_path);	773	req->sv1 = newSVsv (fh_or_path);
1603		774
1604	if (SvPOK (fh_or_path))	775	if (ix == EIO_FCHMOD)
1605	{	776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1606	req->type = REQ_CHMOD;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}
1609	else	777	else
1610	{	778	req->ptr1 = SvPVbyte_nolen (req->sv1);
1611	req->type = REQ_FCHMOD;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}
1614		779
1615	REQ_SEND;	780	REQ_SEND;
1616	}	781	}
1617		782
1618	void	783	void
…		…
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	791	req->sv1 = newSVsv (fh_or_path);
1627		792
1628	if (SvPOK (fh_or_path))	793	if (SvPOK (fh_or_path))
1629	{	794	{
1630	req->type = REQ_CHOWN;	795	req->type = EIO_CHOWN;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);	796	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}	797	}
1633	else	798	else
1634	{	799	{
1635	req->type = REQ_FCHOWN;	800	req->type = EIO_FCHOWN;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}	802	}
1638		803
1639	REQ_SEND;	804	REQ_SEND;
1640	}	805	}
1641		806
1642	void	807	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1644	ALIAS:	809	ALIAS:
1645	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1648	PPCODE:	813	PPCODE:
1649	{	814	{
1650	dREQ;	815	dREQ;
1651		816
1652	req->type = ix;	817	req->type = ix;
…		…
1655		820
1656	REQ_SEND;	821	REQ_SEND;
1657	}	822	}
1658		823
1659	void	824	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
1661	PPCODE:	830	PPCODE:
1662	{	831	{
1663	dREQ;	832	dREQ;
1664		833
		834	req->type = ix;
		835	req->sv1 = newSVsv (oldpath);
		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
		837	req->sv2 = newSVsv (newpath);
		838	req->ptr2 = SvPVbyte_nolen (req->sv2);
		839
		840	REQ_SEND;
		841	}
		842
		843	void
		844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		845	PPCODE:
		846	{
		847	dREQ;
		848
1665	req->type = REQ_MKDIR;	849	req->type = EIO_MKNOD;
1666	req->sv1 = newSVsv (pathname);	850	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_link = REQ_LINK
1677	aio_symlink = REQ_SYMLINK
1678	aio_rename = REQ_RENAME
1679	PPCODE:
1680	{
1681	dREQ;
1682
1683	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1686	req->sv1 = newSVsv (newpath);
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688
1689	REQ_SEND;
1690	}
1691
1692	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1694	PPCODE:
1695	{
1696	dREQ;
1697
1698	req->type = REQ_MKNOD;
1699	req->sv1 = newSVsv (pathname);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
1701	req->mode = (mode_t)mode;	852	req->int2 = (mode_t)mode;
1702	req->offs = dev;	853	req->offs = dev;
1703		854
1704	REQ_SEND;	855	REQ_SEND;
1705	}	856	}
1706		857
…		…
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
1709	PPCODE:	860	PPCODE:
1710	{	861	{
1711	dREQ;	862	dREQ;
1712		863
1713	req->type = REQ_BUSY;	864	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	865	req->nv1 = delay < 0. ? 0. : delay;
1715		866
1716	REQ_SEND;	867	REQ_SEND;
1717	}	868	}
1718		869
…		…
1721	PROTOTYPE: ;$	872	PROTOTYPE: ;$
1722	PPCODE:	873	PPCODE:
1723	{	874	{
1724	dREQ;	875	dREQ;
1725		876
1726	req->type = REQ_GROUP;	877	req->type = EIO_GROUP;
1727		878
1728	req_send (req);	879	eio_submit (req);
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1730	}	881	}
1731		882
1732	void	883	void
1733	aio_nop (SV *callback=&PL_sv_undef)	884	aio_nop (SV *callback=&PL_sv_undef)
		885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
1734	PPCODE:	888	PPCODE:
1735	{	889	{
1736	dREQ;	890	dREQ;
1737		891
1738	req->type = REQ_NOP;	892	req->type = ix;
1739		893
1740	REQ_SEND;	894	REQ_SEND;
1741	}	895	}
1742		896
1743	int	897	int
1744	aioreq_pri (int pri = 0)	898	aioreq_pri (int pri = 0)
1745	PROTOTYPE: ;$	899	PROTOTYPE: ;$
1746	CODE:	900	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	901	RETVAL = next_pri - EIO_PRI_BIAS;
1748	if (items > 0)	902	if (items > 0)
1749	{	903	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	906	next_pri = pri + EIO_PRI_BIAS;
1753	}	907	}
1754	OUTPUT:	908	OUTPUT:
1755	RETVAL	909	RETVAL
1756		910
1757	void	911	void
1758	aioreq_nice (int nice = 0)	912	aioreq_nice (int nice = 0)
1759	CODE:	913	CODE:
1760	nice = next_pri - nice;	914	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	917	next_pri = nice + EIO_PRI_BIAS;
1764		918
1765	void	919	void
1766	flush ()	920	flush ()
1767	PROTOTYPE:	921	PROTOTYPE:
1768	CODE:	922	CODE:
…		…
1801	poll_wait()	955	poll_wait()
1802	PROTOTYPE:	956	PROTOTYPE:
1803	CODE:	957	CODE:
1804	poll_wait ();	958	poll_wait ();
1805		959
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	960	int
1844	nreqs()	961	nreqs()
1845	PROTOTYPE:	962	PROTOTYPE:
1846	CODE:	963	CODE:
1847	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1848	OUTPUT:	965	OUTPUT:
1849	RETVAL	966	RETVAL
1850		967
1851	int	968	int
1852	nready()	969	nready()
1853	PROTOTYPE:	970	PROTOTYPE:
1854	CODE:	971	CODE:
1855	RETVAL = get_nready ();	972	RETVAL = eio_nready ();
1856	OUTPUT:	973	OUTPUT:
1857	RETVAL	974	RETVAL
1858		975
1859	int	976	int
1860	npending()	977	npending()
1861	PROTOTYPE:	978	PROTOTYPE:
1862	CODE:	979	CODE:
1863	RETVAL = get_npending ();	980	RETVAL = eio_npending ();
1864	OUTPUT:	981	OUTPUT:
1865	RETVAL	982	RETVAL
1866		983
1867	int	984	int
1868	nthreads()	985	nthreads()
1869	PROTOTYPE:	986	PROTOTYPE:
1870	CODE:	987	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1872	RETVAL = started;	989	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1874	OUTPUT:	991	OUTPUT:
1875	RETVAL	992	RETVAL
1876		993
1877	PROTOTYPES: DISABLE	994	PROTOTYPES: DISABLE
1878		995
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		997
1881	void	998	void
1882	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1883	CODE:	1000	CODE:
1884	req_cancel (req);	1001	eio_cancel (req);
1885		1002
1886	void	1003	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1888	CODE:	1005	CODE:
1889	SvREFCNT_dec (req->callback);	1006	SvREFCNT_dec (req->callback);
…		…
1894	void	1011	void
1895	add (aio_req grp, ...)	1012	add (aio_req grp, ...)
1896	PPCODE:	1013	PPCODE:
1897	{	1014	{
1898	int i;	1015	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		1016
1904	if (grp->int1 == 2)	1017	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		1019
1907	for (i = 1; i < items; ++i )	1020	for (i = 1; i < items; ++i )
1908	{	1021	{
		1022	aio_req req;
		1023
1909	if (GIMME_V != G_VOID)	1024	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		1026
1912	req = SvAIO_REQ (ST (i));	1027	req = SvAIO_REQ (ST (i));
1913		1028
1914	if (req)	1029	if (req)
1915	{	1030	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	1031	}
1928	}	1032	}
1929		1033
1930	void	1034	void
1931	cancel_subs (aio_req_ornot req)	1035	cancel_subs (aio_req_ornot req)
…		…
1956	grp->errorno = errorno;	1060	grp->errorno = errorno;
1957		1061
1958	void	1062	void
1959	limit (aio_req grp, int limit)	1063	limit (aio_req grp, int limit)
1960	CODE:	1064	CODE:
1961	grp->int2 = limit;	1065	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		1066
1964	void	1067	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1966	CODE:	1069	CODE:
1967	{	1070	{
…		…
1969	grp->sv2 = newSVsv (callback);	1072	grp->sv2 = newSVsv (callback);
1970		1073
1971	if (grp->int2 <= 0)	1074	if (grp->int2 <= 0)
1972	grp->int2 = 2;	1075	grp->int2 = 2;
1973		1076
1974	aio_grp_feed (grp);	1077	eio_grp_limit (grp, grp->int2);
1975	}	1078	}
1976		1079

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