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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.108 by root, Thu Oct 4 12:50:35 2007 UTC vs.
Revision 1.139 by root, Tue Apr 21 20:12:56 2009 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	/* perl stupidly overrides readdir and maybe others */
70	# if __linux	71	/* with thread-unsafe versions, imagine that :( */
71	# include <sys/sendfile.h>	72	#undef readdir
72	# elif __freebsd	73	#undef opendir
73	# include <sys/socket.h>	74	#undef closedir
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		75
84	/* number of seconds after which idle threads exit */	76	#define EIO_STRUCT_STAT Stat_t
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		77
95	/* use NV for 32 bit perls as it allows larger offsets */	78	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	79	#if IVSIZE >= 8
97	# define SvVAL64 SvIV	80	# define SvVAL64 SvIV
98	#else	81	#else
99	# define SvVAL64 SvNV	82	# define SvVAL64 SvNV
100	#endif	83	#endif
101		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
102	static HV *stash;	98	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 */	99	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_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		100
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		103
135	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;	105	SV *callback; \
140	SV *sv1, *sv2;	106	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;	107	STRLEN stroffset; \
148	int type;	108	SV *self;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		109
153	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
154	unsigned char pri;
155		111
156	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
158	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
159		118
160	enum {	119	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};	121	};
165		122
		123	#include "libeio/eio.c"
		124
166	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
168		127
169	enum {	128	static SV *on_next_submit;
170	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	130	static int max_outstanding;
172		131
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 ()
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 ()
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 };	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
272		133
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 ()
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 ()
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 ()
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 ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	134	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	135	static void req_cancel (aio_req req);
		136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
378		150
379	/* must be called at most once */	151	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
381	{	153	{
382	if (!req->self)	154	if (!req->self)
…		…
400	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	173	}
402		174
403	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
404	{	176	{
405	block_sig ();	177	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	178	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	179	dSP;
414		180
415	ENTER;	181	ENTER;
416	SAVETMPS;	182	SAVETMPS;
417	PUSHMARK (SP);	183	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
419	PUTBACK;	185	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	187	SPAGAIN;
422	FREETMPS;	188	FREETMPS;
423	LEAVE;	189	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	}	190	}
434
435	unblock_sig ();
436	}	191	}
437		192
438	static void aio_grp_dec (aio_req grp)	193	static void req_submit (eio_req *req)
439	{	194	{
440	--grp->size;	195	eio_submit (req);
441		196
442	/* call feeder, if applicable */	197	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	198	{
448	block_sig ();	199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
449		201
450	if (!req_invoke (grp))	202	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		203
457	req_destroy (grp);	204	PUSHMARK (SP);
458	unblock_sig ();	205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
459	}	207	}
460	}	208	}
461		209
462	static int req_invoke (aio_req req)	210	static int req_invoke (eio_req *req)
463	{	211	{
464	dSP;	212	dSP;
465		213
466	if (req->flags & FLAG_SV2_RO_OFF)	214	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	215	SvREADONLY_off (req->sv2);
468		216
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	217	if (!EIO_CANCELLED (req) && req->callback)
470	{	218	{
471	ENTER;	219	ENTER;
472	SAVETMPS;	220	SAVETMPS;
473	PUSHMARK (SP);	221	PUSHMARK (SP);
474	EXTEND (SP, 1);	222	EXTEND (SP, 1);
475		223
476	switch (req->type)	224	switch (req->type)
477	{	225	{
478	case REQ_READDIR:	226	case EIO_READDIR:
479	{	227	{
480	SV *rv = &PL_sv_undef;	228	SV *rv = &PL_sv_undef;
481		229
482	if (req->result >= 0)	230	if (req->result >= 0)
483	{	231	{
…		…
500		248
501	PUSHs (rv);	249	PUSHs (rv);
502	}	250	}
503	break;	251	break;
504		252
505	case REQ_OPEN:	253	case EIO_OPEN:
506	{	254	{
507	/* convert fd to fh */	255	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	256	SV *fh = &PL_sv_undef;
509		257
510	if (req->result >= 0)	258	if (req->result >= 0)
…		…
527		275
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	277	fh = (SV *)gv;
530	}	278	}
531		279
532	XPUSHs (fh);	280	PUSHs (fh);
533	}	281	}
534	break;	282	break;
535		283
536	case REQ_GROUP:	284	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	285	req->int1 = 2; /* mark group as finished */
538		286
539	if (req->sv1)	287	if (req->sv1)
540	{	288	{
541	int i;	289	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	293	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	294	PUSHs (*av_fetch (av, i, 0));
547	}	295	}
548	break;	296	break;
549		297
550	case REQ_NOP:	298	case EIO_NOP:
551	case REQ_BUSY:	299	case EIO_BUSY:
552	break;	300	break;
553		301
554	case REQ_READLINK:	302	case EIO_READLINK:
555	if (req->result > 0)	303	if (req->result > 0)
556	{	304	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;	305	break;
562		306
563	case REQ_STAT:	307	case EIO_STAT:
564	case REQ_LSTAT:	308	case EIO_LSTAT:
565	case REQ_FSTAT:	309	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	311	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	313	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;	314	break;
571		315
572	case REQ_READ:	316	case EIO_READ:
		317	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	318	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	319	*SvEND (req->sv2) = 0;
		320	SvPOK_only (req->sv2);
		321	SvSETMAGIC (req->sv2);
575	PUSHs (sv_2mortal (newSViv (req->result)));	322	PUSHs (sv_2mortal (newSViv (req->result)));
		323	}
576	break;	324	break;
		325
		326	case EIO_DUP2:
		327	if (req->result > 0)
		328	req->result = 0;
		329	/* FALLTHROUGH */
577		330
578	default:	331	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	332	PUSHs (sv_2mortal (newSViv (req->result)));
580	break;	333	break;
581	}	334	}
582		335
583	errno = req->errorno;	336	errno = req->errorno;
584		337
585	PUTBACK;	338	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL);	339	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	340	SPAGAIN;
588		341
589	FREETMPS;	342	FREETMPS;
590	LEAVE;	343	LEAVE;
		344
		345	PUTBACK;
591	}	346	}
592		347
593	if (req->grp)
594	{
595	aio_req grp = req->grp;
596
597	/* unlink request */
598	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
599	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
600
601	if (grp->grp_first == req)
602	grp->grp_first = req->grp_next;
603
604	aio_grp_dec (grp);
605	}
606
607	return !SvTRUE (ERRSV);	348	return !!SvTRUE (ERRSV);
608	}	349	}
609		350
610	static void req_destroy (aio_req req)	351	static void req_destroy (aio_req req)
611	{	352	{
612	if (req->self)	353	if (req->self)
…		…
617		358
618	SvREFCNT_dec (req->sv1);	359	SvREFCNT_dec (req->sv1);
619	SvREFCNT_dec (req->sv2);	360	SvREFCNT_dec (req->sv2);
620	SvREFCNT_dec (req->callback);	361	SvREFCNT_dec (req->callback);
621		362
622	if (req->flags & FLAG_PTR2_FREE)
623	free (req->ptr2);
624
625	Safefree (req);	363	Safefree (req);
626	}	364	}
627		365
628	static void req_cancel_subs (aio_req grp)	366	static void req_cancel_subs (aio_req grp)
629	{	367	{
630	aio_req sub;	368	aio_req sub;
631		369
632	if (grp->type != REQ_GROUP)	370	if (grp->type != EIO_GROUP)
633	return;	371	return;
634		372
635	SvREFCNT_dec (grp->sv2);	373	SvREFCNT_dec (grp->sv2);
636	grp->sv2 = 0;	374	grp->sv2 = 0;
637		375
638	for (sub = grp->grp_first; sub; sub = sub->grp_next)	376	eio_grp_cancel (grp);
639	req_cancel (sub);
640	}
641
642	static void req_cancel (aio_req req)
643	{
644	req->flags |= FLAG_CANCELLED;
645
646	req_cancel_subs (req);
647	}	377	}
648		378
649	#ifdef USE_SOCKETS_AS_HANDLES	379	#ifdef USE_SOCKETS_AS_HANDLES
650	# define TO_SOCKET(x) (win32_get_osfhandle (x))	380	# define TO_SOCKET(x) (win32_get_osfhandle (x))
651	#else	381	#else
652	# define TO_SOCKET(x) (x)	382	# define TO_SOCKET(x) (x)
653	#endif	383	#endif
654		384
655	static void	385	static void
656	create_respipe ()	386	create_respipe (void)
657	{	387	{
658	int old_readfd = respipe [0];	388	int old_readfd = respipe [0];
659		389
660	if (respipe [1] >= 0)	390	if (respipe [1] >= 0)
661	respipe_close (TO_SOCKET (respipe [1]));	391	respipe_close (TO_SOCKET (respipe [1]));
…		…
688		418
689	respipe_osf [0] = TO_SOCKET (respipe [0]);	419	respipe_osf [0] = TO_SOCKET (respipe [0]);
690	respipe_osf [1] = TO_SOCKET (respipe [1]);	420	respipe_osf [1] = TO_SOCKET (respipe [1]);
691	}	421	}
692		422
693	X_THREAD_PROC (aio_proc);
694
695	static void start_thread (void)
696	{
697	worker *wrk = calloc (1, sizeof (worker));
698
699	if (!wrk)
700	croak ("unable to allocate worker thread data");
701
702	X_LOCK (wrklock);
703
704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
705	{
706	wrk->prev = &wrk_first;
707	wrk->next = wrk_first.next;
708	wrk_first.next->prev = wrk;
709	wrk_first.next = wrk;
710	++started;
711	}
712	else
713	free (wrk);
714
715	X_UNLOCK (wrklock);
716	}
717
718	static void maybe_start_thread ()
719	{
720	if (get_nthreads () >= wanted)
721	return;
722
723	/* todo: maybe use idle here, but might be less exact */
724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
725	return;
726
727	start_thread ();
728	}
729
730	static void req_send (aio_req req)
731	{
732	block_sig ();
733
734	++nreqs;
735
736	X_LOCK (reqlock);
737	++nready;
738	reqq_push (&req_queue, req);
739	X_COND_SIGNAL (reqwait);
740	X_UNLOCK (reqlock);
741
742	unblock_sig ();
743
744	maybe_start_thread ();
745	}
746
747	static void end_thread (void)
748	{
749	aio_req req;
750
751	Newz (0, req, 1, aio_cb);
752
753	req->type = REQ_QUIT;
754	req->pri = PRI_MAX + PRI_BIAS;
755
756	X_LOCK (reqlock);
757	reqq_push (&req_queue, req);
758	X_COND_SIGNAL (reqwait);
759	X_UNLOCK (reqlock);
760
761	X_LOCK (wrklock);
762	--started;
763	X_UNLOCK (wrklock);
764	}
765
766	static void set_max_idle (int nthreads)
767	{
768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
769	max_idle = nthreads <= 0 ? 1 : nthreads;
770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
771	}
772
773	static void min_parallel (int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void max_parallel (int nthreads)
780	{
781	if (wanted > nthreads)
782	wanted = nthreads;
783
784	while (started > wanted)
785	end_thread ();
786	}
787
788	static void poll_wait ()	423	static void poll_wait (void)
789	{	424	{
790	fd_set rfd;	425	fd_set rfd;
791		426
792	while (nreqs)	427	while (eio_nreqs ())
793	{	428	{
794	int size;	429	int size;
795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	430
		431	X_LOCK (reslock);
796	size = res_queue.size;	432	size = res_queue.size;
797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	433	X_UNLOCK (reslock);
798		434
799	if (size)	435	if (size)
800	return;	436	return;
801		437
802	maybe_start_thread ();	438	etp_maybe_start_thread ();
803		439
804	FD_ZERO (&rfd);	440	FD_ZERO (&rfd);
805	FD_SET (respipe [0], &rfd);	441	FD_SET (respipe [0], &rfd);
806		442
807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);	443	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
808	}	444	}
809	}	445	}
810		446
811	static int poll_cb ()	447	static int poll_cb (void)
812	{	448	{
813	dSP;
814	int count = 0;
815	int maxreqs = max_poll_reqs;
816	int do_croak = 0;
817	struct timeval tv_start, tv_now;
818	aio_req req;
819
820	if (max_poll_time)
821	gettimeofday (&tv_start, 0);
822
823	block_sig ();
824
825	for (;;)	449	for (;;)
826	{	450	{
827	for (;;)	451	int res = eio_poll ();
828	{
829	maybe_start_thread ();
830		452
831	X_LOCK (reslock);	453	if (res > 0)
832	req = reqq_shift (&res_queue);
833
834	if (req)
835	{
836	--npending;
837
838	if (!res_queue.size)
839	{
840	/* read any signals sent by the worker threads */
841	char buf [4];
842	while (respipe_read (respipe [0], buf, 4) == 4)
843	;
844	}
845	}
846
847	X_UNLOCK (reslock);
848
849	if (!req)
850	break;
851
852	--nreqs;
853
854	if (req->type == REQ_GROUP && req->size)
855	{
856	req->int1 = 1; /* mark request as delayed */
857	continue;
858	}
859	else
860	{
861	if (!req_invoke (req))
862	{
863	req_destroy (req);
864	unblock_sig ();
865	croak (0);	454	croak (0);
866	}
867		455
868	count++;	456	if (!max_outstanding || max_outstanding > eio_nreqs ())
869	}	457	return res;
870
871	req_destroy (req);
872
873	if (maxreqs && !--maxreqs)
874	break;
875
876	if (max_poll_time)
877	{
878	gettimeofday (&tv_now, 0);
879
880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
881	break;
882	}
883	}
884
885	if (nreqs <= max_outstanding)
886	break;
887		458
888	poll_wait ();	459	poll_wait ();
889
890	++maxreqs;
891	}	460	}
892
893	unblock_sig ();
894	return count;
895	}	461	}
896		462
897	/*****************************************************************************/	463	static void atfork_child (void)
898	/* work around various missing functions */
899
900	#if !HAVE_PREADWRITE
901	# define pread aio_pread
902	# define pwrite aio_pwrite
903
904	/*
905	* make our pread/pwrite safe against themselves, but not against
906	* normal read/write by using a mutex. slows down execution a lot,
907	* but that's your problem, not mine.
908	*/
909	static mutex_t preadwritelock = X_MUTEX_INIT;
910
911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
912	{	464	{
913	ssize_t res;	465	create_respipe ();
914	off_t ooffset;
915
916	X_LOCK (preadwritelock);
917	ooffset = lseek (fd, 0, SEEK_CUR);
918	lseek (fd, offset, SEEK_SET);
919	res = read (fd, buf, count);
920	lseek (fd, ooffset, SEEK_SET);
921	X_UNLOCK (preadwritelock);
922
923	return res;
924	}	466	}
925		467
926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	468	static SV *
		469	get_cb (SV *cb_sv)
927	{	470	{
928	ssize_t res;	471	HV *st;
929	off_t ooffset;	472	GV *gvp;
		473	CV *cv;
930		474
931	X_LOCK (preadwritelock);	475	if (!SvOK (cb_sv))
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, offset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941
942	#ifndef HAVE_FUTIMES
943
944	# define utimes(path,times) aio_utimes (path, times)
945	# define futimes(fd,times) aio_futimes (fd, times)
946
947	int aio_utimes (const char *filename, const struct timeval times[2])
948	{
949	if (times)
950	{
951	struct utimbuf buf;
952
953	buf.actime = times[0].tv_sec;
954	buf.modtime = times[1].tv_sec;
955
956	return utime (filename, &buf);
957	}
958	else
959	return utime (filename, 0);
960	}
961
962	int aio_futimes (int fd, const struct timeval tv[2])
963	{
964	errno = ENOSYS;
965	return -1;
966	}
967
968	#endif
969
970	#if !HAVE_FDATASYNC
971	# define fdatasync fsync
972	#endif
973
974	#if !HAVE_READAHEAD
975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
976
977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
978	{
979	size_t todo = count;
980	dBUF;
981
982	while (todo > 0)
983	{
984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
985
986	pread (fd, aio_buf, len, offset);
987	offset += len;
988	todo -= len;
989	}
990
991	errno = 0;
992	return count;
993	}
994
995	#endif
996
997	#if !HAVE_READDIR_R
998	# define readdir_r aio_readdir_r
999
1000	static mutex_t readdirlock = X_MUTEX_INIT;
1001
1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1003	{
1004	X_DIRENT *e;
1005	int errorno;
1006
1007	X_LOCK (readdirlock);
1008
1009	e = readdir (dirp);
1010	errorno = errno;
1011
1012	if (e)
1013	{
1014	*res = ent;
1015	strcpy (ent->d_name, e->d_name);
1016	}
1017	else
1018	*res = 0;
1019
1020	X_UNLOCK (readdirlock);
1021
1022	errno = errorno;
1023	return e ? 0 : -1;
1024	}
1025	#endif
1026
1027	/* sendfile always needs emulation */
1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1029	{
1030	ssize_t res;
1031
1032	if (!count)
1033	return 0;	476	return 0;
1034		477
1035	#if HAVE_SENDFILE	478	cv = sv_2cv (cb_sv, &st, &gvp, 0);
1036	# if __linux
1037	res = sendfile (ofd, ifd, &offset, count);
1038		479
1039	# elif __freebsd	480	if (!cv)
1040	/*	481	croak ("IO::AIO callback must be undef or a CODE reference");
1041	* Of course, the freebsd sendfile is a dire hack with no thoughts
1042	* wasted on making it similar to other I/O functions.
1043	*/
1044	{
1045	off_t sbytes;
1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1047		482
1048	if (res < 0 && sbytes)	483	return (SV *)cv;
1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1050	res = sbytes;
1051	}
1052
1053	# elif __hpux
1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
1055
1056	# elif __solaris
1057	{
1058	struct sendfilevec vec;
1059	size_t sbytes;
1060
1061	vec.sfv_fd = ifd;
1062	vec.sfv_flag = 0;
1063	vec.sfv_off = offset;
1064	vec.sfv_len = count;
1065
1066	res = sendfilev (ofd, &vec, 1, &sbytes);
1067
1068	if (res < 0 && sbytes)
1069	res = sbytes;
1070	}
1071
1072	# endif
1073	#else
1074	res = -1;
1075	errno = ENOSYS;
1076	#endif
1077
1078	if (res < 0
1079	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1080	#if __solaris
1081	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1082	#endif
1083	)
1084	)
1085	{
1086	/* emulate sendfile. this is a major pain in the ass */
1087	dBUF;
1088
1089	res = 0;
1090
1091	while (count)
1092	{
1093	ssize_t cnt;
1094
1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1096
1097	if (cnt <= 0)
1098	{
1099	if (cnt && !res) res = -1;
1100	break;
1101	}
1102
1103	cnt = write (ofd, aio_buf, cnt);
1104
1105	if (cnt <= 0)
1106	{
1107	if (cnt && !res) res = -1;
1108	break;
1109	}
1110
1111	offset += cnt;
1112	res += cnt;
1113	count -= cnt;
1114	}
1115	}
1116
1117	return res;
1118	}
1119
1120	/* read a full directory */
1121	static void scandir_ (aio_req req, worker *self)
1122	{
1123	DIR *dirp;
1124	union
1125	{
1126	X_DIRENT d;
1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1128	} *u;
1129	X_DIRENT *entp;
1130	char *name, *names;
1131	int memlen = 4096;
1132	int memofs = 0;
1133	int res = 0;
1134
1135	X_LOCK (wrklock);
1136	self->dirp = dirp = opendir (req->ptr1);
1137	self->dbuf = u = malloc (sizeof (*u));
1138	req->flags |= FLAG_PTR2_FREE;
1139	req->ptr2 = names = malloc (memlen);
1140	X_UNLOCK (wrklock);
1141
1142	if (dirp && u && names)
1143	for (;;)
1144	{
1145	errno = 0;
1146	readdir_r (dirp, &u->d, &entp);
1147
1148	if (!entp)
1149	break;
1150
1151	name = entp->d_name;
1152
1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1154	{
1155	int len = strlen (name) + 1;
1156
1157	res++;
1158
1159	while (memofs + len > memlen)
1160	{
1161	memlen *= 2;
1162	X_LOCK (wrklock);
1163	req->ptr2 = names = realloc (names, memlen);
1164	X_UNLOCK (wrklock);
1165
1166	if (!names)
1167	break;
1168	}
1169
1170	memcpy (names + memofs, name, len);
1171	memofs += len;
1172	}
1173	}
1174
1175	if (errno)
1176	res = -1;
1177
1178	req->result = res;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	X_THREAD_PROC (aio_proc)
1184	{
1185	{//D
1186	aio_req req;
1187	struct timespec ts;
1188	worker *self = (worker *)thr_arg;
1189
1190	/* try to distribute timeouts somewhat randomly */
1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1192
1193	for (;;)
1194	{
1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1196
1197	X_LOCK (reqlock);
1198
1199	for (;;)
1200	{
1201	self->req = req = reqq_shift (&req_queue);
1202
1203	if (req)
1204	break;
1205
1206	++idle;
1207
1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1209	== ETIMEDOUT)
1210	{
1211	if (idle > max_idle)
1212	{
1213	--idle;
1214	X_UNLOCK (reqlock);
1215	X_LOCK (wrklock);
1216	--started;
1217	X_UNLOCK (wrklock);
1218	goto quit;
1219	}
1220
1221	/* we are allowed to idle, so do so without any timeout */
1222	X_COND_WAIT (reqwait, reqlock);
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224	}
1225
1226	--idle;
1227	}
1228
1229	--nready;
1230
1231	X_UNLOCK (reqlock);
1232
1233	errno = 0; /* strictly unnecessary */
1234
1235	if (!(req->flags & FLAG_CANCELLED))
1236	switch (req->type)
1237	{
1238	case REQ_READ: req->result = req->offs >= 0
1239	? pread (req->int1, req->ptr1, req->size, req->offs)
1240	: read (req->int1, req->ptr1, req->size); break;
1241	case REQ_WRITE: req->result = req->offs >= 0
1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1243	: write (req->int1, req->ptr1, req->size); break;
1244
1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1247
1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1251
1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1258
1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1269
1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
1272	case REQ_READDIR: scandir_ (req, self); break;
1273
1274	case REQ_BUSY:
1275	#ifdef _WIN32
1276	Sleep (req->nv1 * 1000.);
1277	#else
1278	{
1279	struct timeval tv;
1280
1281	tv.tv_sec = req->nv1;
1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1283
1284	req->result = select (0, 0, 0, 0, &tv);
1285	}
1286	#endif
1287	break;
1288
1289	case REQ_UTIME:
1290	case REQ_FUTIME:
1291	{
1292	struct timeval tv[2];
1293	struct timeval *times;
1294
1295	if (req->nv1 != -1. || req->nv2 != -1.)
1296	{
1297	tv[0].tv_sec = req->nv1;
1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1299	tv[1].tv_sec = req->nv2;
1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1301
1302	times = tv;
1303	}
1304	else
1305	times = 0;
1306
1307
1308	req->result = req->type == REQ_FUTIME
1309	? futimes (req->int1, times)
1310	: utimes (req->ptr1, times);
1311	}
1312
1313	case REQ_GROUP:
1314	case REQ_NOP:
1315	break;
1316
1317	case REQ_QUIT:
1318	goto quit;
1319
1320	default:
1321	req->result = -1;
1322	break;
1323	}
1324
1325	req->errorno = errno;
1326
1327	X_LOCK (reslock);
1328
1329	++npending;
1330
1331	if (!reqq_push (&res_queue, req))
1332	{
1333	/* write a dummy byte to the pipe so fh becomes ready */
1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1335
1336	/* optionally signal the main thread asynchronously */
1337	if (main_sig)
1338	pthread_kill (main_tid, main_sig);
1339	}
1340
1341	self->req = 0;
1342	worker_clear (self);
1343
1344	X_UNLOCK (reslock);
1345	}
1346
1347	quit:
1348	X_LOCK (wrklock);
1349	worker_free (self);
1350	X_UNLOCK (wrklock);
1351
1352	return 0;
1353	}//D
1354	}
1355
1356	/*****************************************************************************/
1357
1358	static void atfork_prepare (void)
1359	{
1360	X_LOCK (wrklock);
1361	X_LOCK (reqlock);
1362	X_LOCK (reslock);
1363	#if !HAVE_PREADWRITE
1364	X_LOCK (preadwritelock);
1365	#endif
1366	#if !HAVE_READDIR_R
1367	X_LOCK (readdirlock);
1368	#endif
1369	}
1370
1371	static void atfork_parent (void)
1372	{
1373	#if !HAVE_READDIR_R
1374	X_UNLOCK (readdirlock);
1375	#endif
1376	#if !HAVE_PREADWRITE
1377	X_UNLOCK (preadwritelock);
1378	#endif
1379	X_UNLOCK (reslock);
1380	X_UNLOCK (reqlock);
1381	X_UNLOCK (wrklock);
1382	}
1383
1384	static void atfork_child (void)
1385	{
1386	aio_req prv;
1387
1388	while (prv = reqq_shift (&req_queue))
1389	req_destroy (prv);
1390
1391	while (prv = reqq_shift (&res_queue))
1392	req_destroy (prv);
1393
1394	while (wrk_first.next != &wrk_first)
1395	{
1396	worker *wrk = wrk_first.next;
1397
1398	if (wrk->req)
1399	req_destroy (wrk->req);
1400
1401	worker_clear (wrk);
1402	worker_free (wrk);
1403	}
1404
1405	started = 0;
1406	idle = 0;
1407	nreqs = 0;
1408	nready = 0;
1409	npending = 0;
1410
1411	create_respipe ();
1412
1413	atfork_parent ();
1414	}	484	}
1415		485
1416	#define dREQ \	486	#define dREQ \
		487	SV *cb_cv; \
1417	aio_req req; \	488	aio_req req; \
1418	int req_pri = next_pri; \	489	int req_pri = next_pri; \
1419	next_pri = DEFAULT_PRI + PRI_BIAS; \	490	next_pri = EIO_PRI_DEFAULT; \
1420	\	491	\
1421	if (SvOK (callback) && !SvROK (callback)) \	492	cb_cv = get_cb (callback); \
1422	croak ("callback must be undef or of reference type"); \
1423	\	493	\
1424	Newz (0, req, 1, aio_cb); \	494	Newz (0, req, 1, eio_req); \
1425	if (!req) \	495	if (!req) \
1426	croak ("out of memory during aio_req allocation"); \	496	croak ("out of memory during eio_req allocation"); \
1427	\	497	\
1428	req->callback = newSVsv (callback); \	498	req->callback = SvREFCNT_inc (cb_cv); \
1429	req->pri = req_pri	499	req->pri = req_pri
1430		500
1431	#define REQ_SEND \	501	#define REQ_SEND \
		502	PUTBACK; \
1432	req_send (req); \	503	req_submit (req); \
		504	SPAGAIN; \
1433	\	505	\
1434	if (GIMME_V != G_VOID) \	506	if (GIMME_V != G_VOID) \
1435	XPUSHs (req_sv (req, AIO_REQ_KLASS));	507	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1436		508
		509	static int
		510	extract_fd (SV *fh, int wr)
		511	{
		512	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		513
		514	if (fd < 0)
		515	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		516
		517	return fd;
		518	}
		519
1437	MODULE = IO::AIO PACKAGE = IO::AIO	520	MODULE = IO::AIO PACKAGE = IO::AIO
1438		521
1439	PROTOTYPES: ENABLE	522	PROTOTYPES: ENABLE
1440		523
1441	BOOT:	524	BOOT:
…		…
1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	528	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	529	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	530	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	531	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	532	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1450	#ifdef _WIN32	533	#ifndef _WIN32
1451	X_MUTEX_CHECK (wrklock);
1452	X_MUTEX_CHECK (reslock);
1453	X_MUTEX_CHECK (reqlock);
1454	X_MUTEX_CHECK (reqwait);
1455	X_MUTEX_CHECK (preadwritelock);
1456	X_MUTEX_CHECK (readdirlock);
1457
1458	X_COND_CHECK (reqwait);
1459	#else
1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	534	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1462	#endif	535	#endif
		536	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		537	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		538	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		539	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
1463		540
1464	create_respipe ();	541	create_respipe ();
1465		542
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	543	if (eio_init (want_poll, done_poll) < 0)
		544	croak ("IO::AIO: unable to initialise eio library");
		545
		546	/* atfork child called in fifo order, so before eio's handler */
		547	X_THREAD_ATFORK (0, 0, atfork_child);
1467	}	548	}
1468		549
1469	void	550	void
1470	max_poll_reqs (int nreqs)	551	max_poll_reqs (int nreqs)
1471	PROTOTYPE: $	552	PROTOTYPE: $
1472	CODE:	553	CODE:
1473	max_poll_reqs = nreqs;	554	eio_set_max_poll_reqs (nreqs);
1474		555
1475	void	556	void
1476	max_poll_time (double nseconds)	557	max_poll_time (double nseconds)
1477	PROTOTYPE: $	558	PROTOTYPE: $
1478	CODE:	559	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	560	eio_set_max_poll_time (nseconds);
1480		561
1481	void	562	void
1482	min_parallel (int nthreads)	563	min_parallel (int nthreads)
1483	PROTOTYPE: $	564	PROTOTYPE: $
		565	CODE:
		566	eio_set_min_parallel (nthreads);
1484		567
1485	void	568	void
1486	max_parallel (int nthreads)	569	max_parallel (int nthreads)
1487	PROTOTYPE: $	570	PROTOTYPE: $
		571	CODE:
		572	eio_set_max_parallel (nthreads);
1488		573
1489	void	574	void
1490	max_idle (int nthreads)	575	max_idle (int nthreads)
1491	PROTOTYPE: $	576	PROTOTYPE: $
1492	CODE:	577	CODE:
1493	set_max_idle (nthreads);	578	eio_set_max_idle (nthreads);
1494		579
1495	int	580	void
1496	max_outstanding (int maxreqs)	581	max_outstanding (int maxreqs)
1497	PROTOTYPE: $	582	PROTOTYPE: $
1498	CODE:	583	CODE:
1499	RETVAL = max_outstanding;
1500	max_outstanding = maxreqs;	584	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		585
1504	void	586	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	587	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$;$	588	PROTOTYPE: $$$;$
1507	PPCODE:	589	PPCODE:
1508	{	590	{
1509	dREQ;	591	dREQ;
1510		592
1511	req->type = REQ_OPEN;	593	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	594	req->sv1 = newSVsv (pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);	595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	596	req->int1 = flags;
1515	req->mode = mode;	597	req->int2 = mode;
1516		598
1517	REQ_SEND;	599	REQ_SEND;
1518	}	600	}
1519		601
1520	void	602	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	603	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1522	PROTOTYPE: $;$	604	PROTOTYPE: $;$
1523	ALIAS:	605	ALIAS:
1524	aio_fsync = REQ_FSYNC	606	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	607	aio_fdatasync = EIO_FDATASYNC
1526	PPCODE:	608	PPCODE:
1527	{	609	{
		610	int fd = extract_fd (fh, 0);
1528	dREQ;	611	dREQ;
1529		612
1530	req->type = ix;	613	req->type = ix;
1531	req->sv1 = newSVsv (fh);	614	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	615	req->int1 = fd;
		616
		617	REQ_SEND (req);
		618	}
		619
		620	void
		621	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		622	PROTOTYPE: $$$$;$
		623	PPCODE:
		624	{
		625	int fd = extract_fd (fh, 0);
		626	dREQ;
		627
		628	req->type = EIO_SYNC_FILE_RANGE;
		629	req->sv1 = newSVsv (fh);
		630	req->int1 = fd;
		631	req->offs = SvVAL64 (offset);
		632	req->size = SvVAL64 (nbytes);
		633	req->int2 = flags;
1533		634
1534	REQ_SEND (req);	635	REQ_SEND (req);
1535	}	636	}
1536		637
1537	void	638	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	639	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $;$	640	PROTOTYPE: $;$
1540	PPCODE:	641	PPCODE:
1541	{	642	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	643	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1543	int fd = PerlIO_fileno (io);	644	int fd = extract_fd (fh, 0);
1544
1545	if (fd < 0)
1546	croak ("aio_close called with fd-less filehandle");
1547
1548	PerlIO_binmode (aTHX_ io, 0, 0, 0);
1549
1550	{
1551	dREQ;	645	dREQ;
1552		646
		647	if (close_pipe < 0)
		648	{
		649	int pipefd [2];
		650
		651	if (pipe (pipefd) < 0
		652	|| close (pipefd [1]) < 0
		653	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		654	abort (); /*D*/
		655
		656	close_pipe = pipefd [0];
		657	}
		658
1553	req->type = REQ_CLOSE;	659	req->type = EIO_DUP2;
		660	req->int1 = close_pipe;
1554	req->sv1 = newSVsv (fh);	661	req->sv2 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	662	req->int2 = fd;
1556		663
1557	REQ_SEND (req);	664	REQ_SEND (req);
1558	}
1559	}	665	}
1560		666
1561	void	667	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	668	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1563	ALIAS:	669	ALIAS:
1564	aio_read = REQ_READ	670	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	671	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$	672	PROTOTYPE: $$$$$;$
1567	PPCODE:	673	PPCODE:
1568	{	674	{
1569	STRLEN svlen;	675	STRLEN svlen;
		676	int fd = extract_fd (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	677	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	678	UV len = SvUV (length);
1572		679
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	680	if (dataoffset < 0)
1577	dataoffset += svlen;	681	dataoffset += svlen;
1578		682
1579	if (dataoffset < 0 || dataoffset > svlen)	683	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	684	croak ("dataoffset outside of data scalar");
1581		685
1582	if (ix == REQ_WRITE)	686	if (ix == EIO_WRITE)
1583	{	687	{
1584	/* write: check length and adjust. */	688	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	689	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	690	len = svlen - dataoffset;
1587	}	691	}
1588	else	692	else
1589	{	693	{
1590	/* read: grow scalar as necessary */	694	/* read: check type and grow scalar as necessary */
		695	SvUPGRADE (data, SVt_PV);
1591	svptr = SvGROW (data, len + dataoffset + 1);	696	svptr = SvGROW (data, len + dataoffset + 1);
1592	}	697	}
1593
1594	if (len < 0)
1595	croak ("length must not be negative");
1596		698
1597	{	699	{
1598	dREQ;	700	dREQ;
1599		701
1600	req->type = ix;	702	req->type = ix;
1601	req->sv1 = newSVsv (fh);	703	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	704	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	705	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	706	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	707	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	708	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	709	req->stroffset = dataoffset;
1609		710
1610	if (!SvREADONLY (data))	711	if (!SvREADONLY (data))
1611	{	712	{
1612	SvREADONLY_on (data);	713	SvREADONLY_on (data);
…		…
1623	PPCODE:	724	PPCODE:
1624	{	725	{
1625	SV *data;	726	SV *data;
1626	dREQ;	727	dREQ;
1627		728
1628	data = newSV (NAME_MAX);
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;	729	req->type = EIO_READLINK;
1632	req->sv1 = newSVsv (path);	730	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);	731	req->ptr1 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636		732
1637	REQ_SEND;	733	REQ_SEND;
1638	}	734	}
1639		735
1640	void	736	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	737	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$	738	PROTOTYPE: $$$$;$
1643	PPCODE:	739	PPCODE:
1644	{	740	{
		741	int ifd = extract_fd (in_fh , 0);
		742	int ofd = extract_fd (out_fh, 0);
1645	dREQ;	743	dREQ;
1646		744
1647	req->type = REQ_SENDFILE;	745	req->type = EIO_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);	746	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	747	req->int1 = ofd;
1650	req->sv2 = newSVsv (in_fh);	748	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	749	req->int2 = ifd;
1652	req->offs = SvVAL64 (in_offset);	750	req->offs = SvVAL64 (in_offset);
1653	req->size = length;	751	req->size = length;
1654		752
1655	REQ_SEND;	753	REQ_SEND;
1656	}	754	}
…		…
1658	void	756	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	757	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$	758	PROTOTYPE: $$$;$
1661	PPCODE:	759	PPCODE:
1662	{	760	{
		761	int fd = extract_fd (fh, 0);
1663	dREQ;	762	dREQ;
1664		763
1665	req->type = REQ_READAHEAD;	764	req->type = EIO_READAHEAD;
1666	req->sv1 = newSVsv (fh);	765	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	766	req->int1 = fd;
1668	req->offs = SvVAL64 (offset);	767	req->offs = SvVAL64 (offset);
1669	req->size = length;	768	req->size = length;
1670		769
1671	REQ_SEND;	770	REQ_SEND;
1672	}	771	}
1673		772
1674	void	773	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	774	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:	775	ALIAS:
1677	aio_stat = REQ_STAT	776	aio_stat = EIO_STAT
1678	aio_lstat = REQ_LSTAT	777	aio_lstat = EIO_LSTAT
1679	PPCODE:	778	PPCODE:
1680	{	779	{
1681	dREQ;	780	dREQ;
1682		781
1683	req->ptr2 = malloc (sizeof (Stat_t));
1684	if (!req->ptr2)
1685	{
1686	req_destroy (req);
1687	croak ("out of memory during aio_stat statdata allocation");
1688	}
1689
1690	req->flags |= FLAG_PTR2_FREE;
1691	req->sv1 = newSVsv (fh_or_path);	782	req->sv1 = newSVsv (fh_or_path);
1692		783
1693	if (SvPOK (fh_or_path))	784	if (SvPOK (req->sv1))
1694	{	785	{
1695	req->type = ix;	786	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);	787	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	788	}
1698	else	789	else
1699	{	790	{
1700	req->type = REQ_FSTAT;	791	req->type = EIO_FSTAT;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	792	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1702	}	793	}
1703		794
1704	REQ_SEND;	795	REQ_SEND;
1705	}	796	}
…		…
1712		803
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	804	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	805	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	806	req->sv1 = newSVsv (fh_or_path);
1716		807
1717	if (SvPOK (fh_or_path))	808	if (SvPOK (req->sv1))
1718	{	809	{
1719	req->type = REQ_UTIME;	810	req->type = EIO_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);	811	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}	812	}
1722	else	813	else
1723	{	814	{
1724	req->type = REQ_FUTIME;	815	req->type = EIO_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	816	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}	817	}
1727		818
1728	REQ_SEND;	819	REQ_SEND;
1729	}	820	}
…		…
1735	dREQ;	826	dREQ;
1736		827
1737	req->sv1 = newSVsv (fh_or_path);	828	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	829	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		830
1740	if (SvPOK (fh_or_path))	831	if (SvPOK (req->sv1))
1741	{	832	{
1742	req->type = REQ_TRUNCATE;	833	req->type = EIO_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);	834	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}	835	}
1745	else	836	else
1746	{	837	{
1747	req->type = REQ_FTRUNCATE;	838	req->type = EIO_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	839	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}	840	}
1750		841
1751	REQ_SEND;	842	REQ_SEND;
1752	}	843	}
1753		844
1754	void	845	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	846	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_chmod = EIO_CHMOD
		849	aio_mkdir = EIO_MKDIR
1756	PPCODE:	850	PPCODE:
1757	{	851	{
1758	dREQ;	852	dREQ;
1759		853
1760	req->mode = mode;	854	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	855	req->sv1 = newSVsv (fh_or_path);
1762		856
1763	if (SvPOK (fh_or_path))	857	if (SvPOK (req->sv1))
1764	{	858	{
1765	req->type = REQ_CHMOD;	859	req->type = ix;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);	860	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}	861	}
1768	else	862	else
1769	{	863	{
1770	req->type = REQ_FCHMOD;	864	req->type = EIO_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	865	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}	866	}
1773		867
1774	REQ_SEND;	868	REQ_SEND;
1775	}	869	}
…		…
1782		876
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	877	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	878	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	879	req->sv1 = newSVsv (fh_or_path);
1786		880
1787	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1788	{	882	{
1789	req->type = REQ_CHOWN;	883	req->type = EIO_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}	885	}
1792	else	886	else
1793	{	887	{
1794	req->type = REQ_FCHOWN;	888	req->type = EIO_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}	890	}
1797		891
1798	REQ_SEND;	892	REQ_SEND;
1799	}	893	}
1800		894
1801	void	895	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	896	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1803	ALIAS:	897	ALIAS:
1804	aio_unlink = REQ_UNLINK	898	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	899	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	900	aio_readdir = EIO_READDIR
1807	PPCODE:	901	PPCODE:
1808	{	902	{
1809	dREQ;	903	dREQ;
1810		904
1811	req->type = ix;	905	req->type = ix;
…		…
1814		908
1815	REQ_SEND;	909	REQ_SEND;
1816	}	910	}
1817		911
1818	void	912	void
1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	913	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		914	ALIAS:
		915	aio_link = EIO_LINK
		916	aio_symlink = EIO_SYMLINK
		917	aio_rename = EIO_RENAME
1820	PPCODE:	918	PPCODE:
1821	{	919	{
1822	dREQ;	920	dREQ;
1823		921
		922	req->type = ix;
		923	req->sv1 = newSVsv (oldpath);
		924	req->ptr1 = SvPVbyte_nolen (req->sv1);
		925	req->sv2 = newSVsv (newpath);
		926	req->ptr2 = SvPVbyte_nolen (req->sv2);
		927
		928	REQ_SEND;
		929	}
		930
		931	void
		932	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		933	PPCODE:
		934	{
		935	dREQ;
		936
1824	req->type = REQ_MKDIR;	937	req->type = EIO_MKNOD;
1825	req->sv1 = newSVsv (pathname);	938	req->sv1 = newSVsv (pathname);
1826	req->ptr1 = SvPVbyte_nolen (req->sv1);	939	req->ptr1 = SvPVbyte_nolen (req->sv1);
1827	req->mode = mode;
1828
1829	REQ_SEND;
1830	}
1831
1832	void
1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1834	ALIAS:
1835	aio_link = REQ_LINK
1836	aio_symlink = REQ_SYMLINK
1837	aio_rename = REQ_RENAME
1838	PPCODE:
1839	{
1840	dREQ;
1841
1842	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);
1845	req->sv1 = newSVsv (newpath);
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847
1848	REQ_SEND;
1849	}
1850
1851	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1853	PPCODE:
1854	{
1855	dREQ;
1856
1857	req->type = REQ_MKNOD;
1858	req->sv1 = newSVsv (pathname);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);
1860	req->mode = (mode_t)mode;	940	req->int2 = (mode_t)mode;
1861	req->offs = dev;	941	req->offs = dev;
1862		942
1863	REQ_SEND;	943	REQ_SEND;
1864	}	944	}
1865		945
…		…
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	947	aio_busy (double delay, SV *callback=&PL_sv_undef)
1868	PPCODE:	948	PPCODE:
1869	{	949	{
1870	dREQ;	950	dREQ;
1871		951
1872	req->type = REQ_BUSY;	952	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	953	req->nv1 = delay < 0. ? 0. : delay;
1874		954
1875	REQ_SEND;	955	REQ_SEND;
1876	}	956	}
1877		957
…		…
1880	PROTOTYPE: ;$	960	PROTOTYPE: ;$
1881	PPCODE:	961	PPCODE:
1882	{	962	{
1883	dREQ;	963	dREQ;
1884		964
1885	req->type = REQ_GROUP;	965	req->type = EIO_GROUP;
1886		966
1887	req_send (req);	967	req_submit (req);
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	968	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1889	}	969	}
1890		970
1891	void	971	void
1892	aio_nop (SV *callback=&PL_sv_undef)	972	aio_nop (SV *callback=&PL_sv_undef)
		973	ALIAS:
		974	aio_nop = EIO_NOP
		975	aio_sync = EIO_SYNC
1893	PPCODE:	976	PPCODE:
1894	{	977	{
1895	dREQ;	978	dREQ;
1896		979
1897	req->type = REQ_NOP;	980	req->type = ix;
1898		981
1899	REQ_SEND;	982	REQ_SEND;
1900	}	983	}
1901		984
1902	int	985	int
1903	aioreq_pri (int pri = 0)	986	aioreq_pri (int pri = 0)
1904	PROTOTYPE: ;$	987	PROTOTYPE: ;$
1905	CODE:	988	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	989	RETVAL = next_pri;
1907	if (items > 0)	990	if (items > 0)
1908	{	991	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	992	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	993	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	994	next_pri = pri;
1912	}	995	}
1913	OUTPUT:	996	OUTPUT:
1914	RETVAL	997	RETVAL
1915		998
1916	void	999	void
1917	aioreq_nice (int nice = 0)	1000	aioreq_nice (int nice = 0)
1918	CODE:	1001	CODE:
1919	nice = next_pri - nice;	1002	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	1003	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	1004	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	1005	next_pri = nice;
1923		1006
1924	void	1007	void
1925	flush ()	1008	flush ()
1926	PROTOTYPE:	1009	PROTOTYPE:
1927	CODE:	1010	CODE:
1928	while (nreqs)	1011	while (eio_nreqs ())
1929	{	1012	{
1930	poll_wait ();	1013	poll_wait ();
1931	poll_cb ();	1014	poll_cb ();
1932	}	1015	}
1933		1016
…		…
1960	poll_wait()	1043	poll_wait()
1961	PROTOTYPE:	1044	PROTOTYPE:
1962	CODE:	1045	CODE:
1963	poll_wait ();	1046	poll_wait ();
1964		1047
1965	void
1966	setsig (int signum = SIGIO)
1967	PROTOTYPE: ;$
1968	CODE:
1969	{
1970	if (block_sig_level)
1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1972
1973	X_LOCK (reslock);
1974	main_tid = pthread_self ();
1975	main_sig = signum;
1976	X_UNLOCK (reslock);
1977
1978	if (main_sig && npending)
1979	pthread_kill (main_tid, main_sig);
1980	}
1981
1982	void
1983	aio_block (SV *cb)
1984	PROTOTYPE: &
1985	PPCODE:
1986	{
1987	int count;
1988
1989	block_sig ();
1990	PUSHMARK (SP);
1991	PUTBACK;
1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1993	SPAGAIN;
1994	unblock_sig ();
1995
1996	if (SvTRUE (ERRSV))
1997	croak (0);
1998
1999	XSRETURN (count);
2000	}
2001
2002	int	1048	int
2003	nreqs()	1049	nreqs()
2004	PROTOTYPE:	1050	PROTOTYPE:
2005	CODE:	1051	CODE:
2006	RETVAL = nreqs;	1052	RETVAL = eio_nreqs ();
2007	OUTPUT:	1053	OUTPUT:
2008	RETVAL	1054	RETVAL
2009		1055
2010	int	1056	int
2011	nready()	1057	nready()
2012	PROTOTYPE:	1058	PROTOTYPE:
2013	CODE:	1059	CODE:
2014	RETVAL = get_nready ();	1060	RETVAL = eio_nready ();
2015	OUTPUT:	1061	OUTPUT:
2016	RETVAL	1062	RETVAL
2017		1063
2018	int	1064	int
2019	npending()	1065	npending()
2020	PROTOTYPE:	1066	PROTOTYPE:
2021	CODE:	1067	CODE:
2022	RETVAL = get_npending ();	1068	RETVAL = eio_npending ();
2023	OUTPUT:	1069	OUTPUT:
2024	RETVAL	1070	RETVAL
2025		1071
2026	int	1072	int
2027	nthreads()	1073	nthreads()
2028	PROTOTYPE:	1074	PROTOTYPE:
2029	CODE:	1075	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1076	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	1077	OUTPUT:
2034	RETVAL	1078	RETVAL
2035		1079
		1080	void _on_next_submit (SV *cb)
		1081	CODE:
		1082	SvREFCNT_dec (on_next_submit);
		1083	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1084
2036	PROTOTYPES: DISABLE	1085	PROTOTYPES: DISABLE
2037		1086
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1087	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		1088
2040	void	1089	void
2041	cancel (aio_req_ornot req)	1090	cancel (aio_req_ornot req)
2042	CODE:	1091	CODE:
2043	req_cancel (req);	1092	eio_cancel (req);
2044		1093
2045	void	1094	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1095	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2047	CODE:	1096	PPCODE:
		1097	{
		1098	if (GIMME_V != G_VOID)
		1099	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1100
		1101	if (items > 1)
		1102	{
		1103	SV *cb_cv = get_cb (callback);
		1104
2048	SvREFCNT_dec (req->callback);	1105	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	1106	req->callback = SvREFCNT_inc (cb_cv);
		1107	}
		1108	}
2050		1109
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1110	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		1111
2053	void	1112	void
2054	add (aio_req grp, ...)	1113	add (aio_req grp, ...)
2055	PPCODE:	1114	PPCODE:
2056	{	1115	{
2057	int i;	1116	int i;
2058	aio_req req;
2059
2060	if (main_sig && !block_sig_level)
2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2062		1117
2063	if (grp->int1 == 2)	1118	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1119	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		1120
2066	for (i = 1; i < items; ++i )	1121	for (i = 1; i < items; ++i )
2067	{	1122	{
		1123	aio_req req;
		1124
2068	if (GIMME_V != G_VOID)	1125	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1126	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		1127
2071	req = SvAIO_REQ (ST (i));	1128	req = SvAIO_REQ (ST (i));
2072		1129
2073	if (req)	1130	if (req)
2074	{	1131	eio_grp_add (grp, req);
2075	++grp->size;
2076	req->grp = grp;
2077
2078	req->grp_prev = 0;
2079	req->grp_next = grp->grp_first;
2080
2081	if (grp->grp_first)
2082	grp->grp_first->grp_prev = req;
2083
2084	grp->grp_first = req;
2085	}
2086	}	1132	}
2087	}	1133	}
2088		1134
2089	void	1135	void
2090	cancel_subs (aio_req_ornot req)	1136	cancel_subs (aio_req_ornot req)
…		…
2115	grp->errorno = errorno;	1161	grp->errorno = errorno;
2116		1162
2117	void	1163	void
2118	limit (aio_req grp, int limit)	1164	limit (aio_req grp, int limit)
2119	CODE:	1165	CODE:
2120	grp->int2 = limit;	1166	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		1167
2123	void	1168	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	1169	feed (aio_req grp, SV *callback=&PL_sv_undef)
2125	CODE:	1170	CODE:
2126	{	1171	{
2127	SvREFCNT_dec (grp->sv2);	1172	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	1173	grp->sv2 = newSVsv (callback);
		1174	grp->feed = aio_grp_feed;
2129		1175
2130	if (grp->int2 <= 0)	1176	if (grp->int2 <= 0)
2131	grp->int2 = 2;	1177	grp->int2 = 2;
2132		1178
2133	aio_grp_feed (grp);	1179	eio_grp_limit (grp, grp->int2);
2134	}	1180	}
2135		1181

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