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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.110 by root, Sun Dec 2 20:54:33 2007 UTC vs.
Revision 1.134 by root, Sun Apr 19 13:05:06 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_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};
131		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)
…		…
531		279
532	PUSHs (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:
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	317	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	318	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	319	PUSHs (sv_2mortal (newSViv (req->result)));
576	break;	320	break;
577		321
		322	case EIO_DUP2:
		323	if (req->result > 0)
		324	req->result = 0;
		325	/* FALLTHROUGH */
		326
578	default:	327	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	328	PUSHs (sv_2mortal (newSViv (req->result)));
580	break;	329	break;
581	}	330	}
582		331
…		…
590	LEAVE;	339	LEAVE;
591		340
592	PUTBACK;	341	PUTBACK;
593	}	342	}
594		343
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	344	return !!SvTRUE (ERRSV);
610	}	345	}
611		346
612	static void req_destroy (aio_req req)	347	static void req_destroy (aio_req req)
613	{	348	{
614	if (req->self)	349	if (req->self)
…		…
619		354
620	SvREFCNT_dec (req->sv1);	355	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	356	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	357	SvREFCNT_dec (req->callback);
623		358
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	359	Safefree (req);
628	}	360	}
629		361
630	static void req_cancel_subs (aio_req grp)	362	static void req_cancel_subs (aio_req grp)
631	{	363	{
632	aio_req sub;	364	aio_req sub;
633		365
634	if (grp->type != REQ_GROUP)	366	if (grp->type != EIO_GROUP)
635	return;	367	return;
636		368
637	SvREFCNT_dec (grp->sv2);	369	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	370	grp->sv2 = 0;
639		371
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	372	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}	373	}
650		374
651	#ifdef USE_SOCKETS_AS_HANDLES	375	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))	376	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else	377	#else
654	# define TO_SOCKET(x) (x)	378	# define TO_SOCKET(x) (x)
655	#endif	379	#endif
656		380
657	static void	381	static void
658	create_respipe ()	382	create_respipe (void)
659	{	383	{
660	int old_readfd = respipe [0];	384	int old_readfd = respipe [0];
661		385
662	if (respipe [1] >= 0)	386	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));	387	respipe_close (TO_SOCKET (respipe [1]));
…		…
690		414
691	respipe_osf [0] = TO_SOCKET (respipe [0]);	415	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);	416	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}	417	}
694		418
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread ()
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait ()	419	static void poll_wait (void)
791	{	420	{
792	fd_set rfd;	421	fd_set rfd;
793		422
794	while (nreqs)	423	while (eio_nreqs ())
795	{	424	{
796	int size;	425	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	426
		427	X_LOCK (reslock);
798	size = res_queue.size;	428	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	429	X_UNLOCK (reslock);
800		430
801	if (size)	431	if (size)
802	return;	432	return;
803		433
804	maybe_start_thread ();	434	etp_maybe_start_thread ();
805		435
806	FD_ZERO (&rfd);	436	FD_ZERO (&rfd);
807	FD_SET (respipe [0], &rfd);	437	FD_SET (respipe [0], &rfd);
808		438
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);	439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	440	}
811	}	441	}
812		442
813	static int poll_cb ()	443	static int poll_cb (void)
814	{	444	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	445	for (;;)
828	{	446	{
829	for (;;)	447	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		448
833	X_LOCK (reslock);	449	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	450	croak (0);
868	}
869		451
870	count++;	452	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	453	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		454
890	poll_wait ();	455	poll_wait ();
891
892	++maxreqs;
893	}	456	}
894
895	unblock_sig ();
896	return count;
897	}	457	}
898		458
899	/*****************************************************************************/	459	static void atfork_child (void)
900	/* work around various missing functions */
901
902	#if !HAVE_PREADWRITE
903	# define pread aio_pread
904	# define pwrite aio_pwrite
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{	460	{
915	ssize_t res;	461	create_respipe ();
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}	462	}
927		463
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	464	static SV *
		465	get_cb (SV *cb_sv)
929	{	466	{
930	ssize_t res;	467	HV *st;
931	off_t ooffset;	468	GV *gvp;
		469	CV *cv;
932		470
933	X_LOCK (preadwritelock);	471	if (!SvOK (cb_sv))
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;	472	return 0;
1036		473
1037	#if HAVE_SENDFILE	474	cv = sv_2cv (cb_sv, &st, &gvp, 0);
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040		475
1041	# elif __freebsd	476	if (!cv)
1042	/*	477	croak ("IO::AIO callback must be undef or a CODE reference");
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049		478
1050	if (res < 0 && sbytes)	479	return (SV *)cv;
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079
1080	if (res < 0
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182
1183	/*****************************************************************************/
1184
1185	X_THREAD_PROC (aio_proc)
1186	{
1187	{//D
1188	aio_req req;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_SYNC: req->result = 0; sync (); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1275
1276	case REQ_READDIR: scandir_ (req, self); break;
1277
1278	case REQ_BUSY:
1279	#ifdef _WIN32
1280	Sleep (req->nv1 * 1000.);
1281	#else
1282	{
1283	struct timeval tv;
1284
1285	tv.tv_sec = req->nv1;
1286	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1287
1288	req->result = select (0, 0, 0, 0, &tv);
1289	}
1290	#endif
1291	break;
1292
1293	case REQ_UTIME:
1294	case REQ_FUTIME:
1295	{
1296	struct timeval tv[2];
1297	struct timeval *times;
1298
1299	if (req->nv1 != -1. || req->nv2 != -1.)
1300	{
1301	tv[0].tv_sec = req->nv1;
1302	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1303	tv[1].tv_sec = req->nv2;
1304	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1305
1306	times = tv;
1307	}
1308	else
1309	times = 0;
1310
1311
1312	req->result = req->type == REQ_FUTIME
1313	? futimes (req->int1, times)
1314	: utimes (req->ptr1, times);
1315	}
1316
1317	case REQ_GROUP:
1318	case REQ_NOP:
1319	break;
1320
1321	case REQ_QUIT:
1322	goto quit;
1323
1324	default:
1325	req->result = -1;
1326	break;
1327	}
1328
1329	req->errorno = errno;
1330
1331	X_LOCK (reslock);
1332
1333	++npending;
1334
1335	if (!reqq_push (&res_queue, req))
1336	{
1337	/* write a dummy byte to the pipe so fh becomes ready */
1338	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1339
1340	/* optionally signal the main thread asynchronously */
1341	if (main_sig)
1342	pthread_kill (main_tid, main_sig);
1343	}
1344
1345	self->req = 0;
1346	worker_clear (self);
1347
1348	X_UNLOCK (reslock);
1349	}
1350
1351	quit:
1352	X_LOCK (wrklock);
1353	worker_free (self);
1354	X_UNLOCK (wrklock);
1355
1356	return 0;
1357	}//D
1358	}
1359
1360	/*****************************************************************************/
1361
1362	static void atfork_prepare (void)
1363	{
1364	X_LOCK (wrklock);
1365	X_LOCK (reqlock);
1366	X_LOCK (reslock);
1367	#if !HAVE_PREADWRITE
1368	X_LOCK (preadwritelock);
1369	#endif
1370	#if !HAVE_READDIR_R
1371	X_LOCK (readdirlock);
1372	#endif
1373	}
1374
1375	static void atfork_parent (void)
1376	{
1377	#if !HAVE_READDIR_R
1378	X_UNLOCK (readdirlock);
1379	#endif
1380	#if !HAVE_PREADWRITE
1381	X_UNLOCK (preadwritelock);
1382	#endif
1383	X_UNLOCK (reslock);
1384	X_UNLOCK (reqlock);
1385	X_UNLOCK (wrklock);
1386	}
1387
1388	static void atfork_child (void)
1389	{
1390	aio_req prv;
1391
1392	while (prv = reqq_shift (&req_queue))
1393	req_destroy (prv);
1394
1395	while (prv = reqq_shift (&res_queue))
1396	req_destroy (prv);
1397
1398	while (wrk_first.next != &wrk_first)
1399	{
1400	worker *wrk = wrk_first.next;
1401
1402	if (wrk->req)
1403	req_destroy (wrk->req);
1404
1405	worker_clear (wrk);
1406	worker_free (wrk);
1407	}
1408
1409	started = 0;
1410	idle = 0;
1411	nreqs = 0;
1412	nready = 0;
1413	npending = 0;
1414
1415	create_respipe ();
1416
1417	atfork_parent ();
1418	}	480	}
1419		481
1420	#define dREQ \	482	#define dREQ \
		483	SV *cb_cv; \
1421	aio_req req; \	484	aio_req req; \
1422	int req_pri = next_pri; \	485	int req_pri = next_pri; \
1423	next_pri = DEFAULT_PRI + PRI_BIAS; \	486	next_pri = EIO_PRI_DEFAULT; \
1424	\	487	\
1425	if (SvOK (callback) && !SvROK (callback)) \	488	cb_cv = get_cb (callback); \
1426	croak ("callback must be undef or of reference type"); \
1427	\	489	\
1428	Newz (0, req, 1, aio_cb); \	490	Newz (0, req, 1, eio_req); \
1429	if (!req) \	491	if (!req) \
1430	croak ("out of memory during aio_req allocation"); \	492	croak ("out of memory during eio_req allocation"); \
1431	\	493	\
1432	req->callback = newSVsv (callback); \	494	req->callback = SvREFCNT_inc (cb_cv); \
1433	req->pri = req_pri	495	req->pri = req_pri
1434		496
1435	#define REQ_SEND \	497	#define REQ_SEND \
		498	PUTBACK; \
1436	req_send (req); \	499	req_submit (req); \
		500	SPAGAIN; \
1437	\	501	\
1438	if (GIMME_V != G_VOID) \	502	if (GIMME_V != G_VOID) \
1439	XPUSHs (req_sv (req, AIO_REQ_KLASS));	503	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1440		504
1441	MODULE = IO::AIO PACKAGE = IO::AIO	505	MODULE = IO::AIO PACKAGE = IO::AIO
…		…
1449	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	513	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1450	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	514	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1451	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	515	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1452	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	516	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1453	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	517	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1454	#ifdef _WIN32	518	#ifndef _WIN32
1455	X_MUTEX_CHECK (wrklock);
1456	X_MUTEX_CHECK (reslock);
1457	X_MUTEX_CHECK (reqlock);
1458	X_MUTEX_CHECK (reqwait);
1459	X_MUTEX_CHECK (preadwritelock);
1460	X_MUTEX_CHECK (readdirlock);
1461
1462	X_COND_CHECK (reqwait);
1463	#else
1464	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	519	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1465	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1466	#endif	520	#endif
		521	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		522	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		523	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		524	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
1467		525
1468	create_respipe ();	526	create_respipe ();
1469		527
1470	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	528	if (eio_init (want_poll, done_poll) < 0)
		529	croak ("IO::AIO: unable to initialise eio library");
		530
		531	/* atfork child called in fifo order, so before eio's handler */
		532	X_THREAD_ATFORK (0, 0, atfork_child);
1471	}	533	}
1472		534
1473	void	535	void
1474	max_poll_reqs (int nreqs)	536	max_poll_reqs (int nreqs)
1475	PROTOTYPE: $	537	PROTOTYPE: $
1476	CODE:	538	CODE:
1477	max_poll_reqs = nreqs;	539	eio_set_max_poll_reqs (nreqs);
1478		540
1479	void	541	void
1480	max_poll_time (double nseconds)	542	max_poll_time (double nseconds)
1481	PROTOTYPE: $	543	PROTOTYPE: $
1482	CODE:	544	CODE:
1483	max_poll_time = nseconds * AIO_TICKS;	545	eio_set_max_poll_time (nseconds);
1484		546
1485	void	547	void
1486	min_parallel (int nthreads)	548	min_parallel (int nthreads)
1487	PROTOTYPE: $	549	PROTOTYPE: $
		550	CODE:
		551	eio_set_min_parallel (nthreads);
1488		552
1489	void	553	void
1490	max_parallel (int nthreads)	554	max_parallel (int nthreads)
1491	PROTOTYPE: $	555	PROTOTYPE: $
		556	CODE:
		557	eio_set_max_parallel (nthreads);
1492		558
1493	void	559	void
1494	max_idle (int nthreads)	560	max_idle (int nthreads)
1495	PROTOTYPE: $	561	PROTOTYPE: $
1496	CODE:	562	CODE:
1497	set_max_idle (nthreads);	563	eio_set_max_idle (nthreads);
1498		564
1499	int	565	void
1500	max_outstanding (int maxreqs)	566	max_outstanding (int maxreqs)
1501	PROTOTYPE: $	567	PROTOTYPE: $
1502	CODE:	568	CODE:
1503	RETVAL = max_outstanding;
1504	max_outstanding = maxreqs;	569	max_outstanding = maxreqs;
1505	OUTPUT:
1506	RETVAL
1507		570
1508	void	571	void
1509	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	572	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1510	PROTOTYPE: $$$;$	573	PROTOTYPE: $$$;$
1511	PPCODE:	574	PPCODE:
1512	{	575	{
1513	dREQ;	576	dREQ;
1514		577
1515	req->type = REQ_OPEN;	578	req->type = EIO_OPEN;
1516	req->sv1 = newSVsv (pathname);	579	req->sv1 = newSVsv (pathname);
1517	req->ptr1 = SvPVbyte_nolen (req->sv1);	580	req->ptr1 = SvPVbyte_nolen (req->sv1);
1518	req->int1 = flags;	581	req->int1 = flags;
1519	req->mode = mode;	582	req->int2 = mode;
1520		583
1521	REQ_SEND;	584	REQ_SEND;
1522	}	585	}
1523		586
1524	void	587	void
1525	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	588	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1526	PROTOTYPE: $;$	589	PROTOTYPE: $;$
1527	ALIAS:	590	ALIAS:
1528	aio_fsync = REQ_FSYNC	591	aio_fsync = EIO_FSYNC
1529	aio_fdatasync = REQ_FDATASYNC	592	aio_fdatasync = EIO_FDATASYNC
1530	PPCODE:	593	PPCODE:
1531	{	594	{
1532	dREQ;	595	dREQ;
1533		596
1534	req->type = ix;	597	req->type = ix;
…		…
1536	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	599	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1537		600
1538	REQ_SEND (req);	601	REQ_SEND (req);
1539	}	602	}
1540		603
1541	int	604	void
1542	_dup (int fd)	605	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
1543	PROTOTYPE: $	606	PROTOTYPE: $$$$;$
1544	CODE:	607	PPCODE:
1545	RETVAL = dup (fd);	608	{
1546	OUTPUT:	609	dREQ;
1547	RETVAL
1548		610
		611	req->type = EIO_SYNC_FILE_RANGE;
		612	req->sv1 = newSVsv (fh);
		613	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		614	req->offs = SvVAL64 (offset);
		615	req->size = SvVAL64 (nbytes);
		616	req->int2 = flags;
		617
		618	REQ_SEND (req);
		619	}
		620
1549	void	621	void
1550	_aio_close (int fd, SV *callback=&PL_sv_undef)	622	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$	623	PROTOTYPE: $;$
1552	PPCODE:	624	PPCODE:
1553	{	625	{
		626	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1554	dREQ;	627	dREQ;
1555		628
		629	if (close_pipe < 0)
		630	{
		631	int pipefd [2];
		632
		633	if (pipe (pipefd) < 0
		634	|| close (pipefd [1]) < 0
		635	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		636	abort (); /*D*/
		637
		638	close_pipe = pipefd [0];
		639	}
		640
1556	req->type = REQ_CLOSE;	641	req->type = EIO_DUP2;
1557	req->int1 = fd;	642	req->int1 = close_pipe;
		643	req->sv2 = newSVsv (fh);
		644	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1558		645
1559	REQ_SEND (req);	646	REQ_SEND (req);
1560	}	647	}
1561		648
1562	void	649	void
1563	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	650	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1564	ALIAS:	651	ALIAS:
1565	aio_read = REQ_READ	652	aio_read = EIO_READ
1566	aio_write = REQ_WRITE	653	aio_write = EIO_WRITE
1567	PROTOTYPE: $$$$$;$	654	PROTOTYPE: $$$$$;$
1568	PPCODE:	655	PPCODE:
1569	{	656	{
1570	STRLEN svlen;	657	STRLEN svlen;
1571	char *svptr = SvPVbyte (data, svlen);	658	char *svptr = SvPVbyte (data, svlen);
1572	UV len = SvUV (length);	659	UV len = SvUV (length);
		660	int fd;
		661
		662	if (SvTYPE (data) > SVt_PVMG)
		663	croak ("illegal data argument '%s', must be plain scalar string", SvPV_nolen (data));
1573		664
1574	SvUPGRADE (data, SVt_PV);	665	SvUPGRADE (data, SVt_PV);
1575	SvPOK_on (data);	666	SvPOK_only (data);
1576		667
1577	if (dataoffset < 0)	668	if (dataoffset < 0)
1578	dataoffset += svlen;	669	dataoffset += svlen;
1579		670
1580	if (dataoffset < 0 || dataoffset > svlen)	671	if (dataoffset < 0 || dataoffset > svlen)
1581	croak ("dataoffset outside of data scalar");	672	croak ("dataoffset outside of data scalar");
1582		673
1583	if (ix == REQ_WRITE)	674	if (ix == EIO_WRITE)
1584	{	675	{
1585	/* write: check length and adjust. */	676	/* write: check length and adjust. */
1586	if (!SvOK (length) || len + dataoffset > svlen)	677	if (!SvOK (length) || len + dataoffset > svlen)
1587	len = svlen - dataoffset;	678	len = svlen - dataoffset;
1588	}	679	}
…		…
1593	}	684	}
1594		685
1595	if (len < 0)	686	if (len < 0)
1596	croak ("length must not be negative");	687	croak ("length must not be negative");
1597		688
		689	fd = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
		690	: IoOFP (sv_2io (fh)));
		691
		692	if (fd < 0)
		693	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		694
1598	{	695	{
1599	dREQ;	696	dREQ;
1600		697
1601	req->type = ix;	698	req->type = ix;
1602	req->sv1 = newSVsv (fh);	699	req->sv1 = newSVsv (fh);
1603	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	700	req->int1 = df;
1604	: IoOFP (sv_2io (fh)));
1605	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	701	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1606	req->size = len;	702	req->size = len;
1607	req->sv2 = SvREFCNT_inc (data);	703	req->sv2 = SvREFCNT_inc (data);
1608	req->ptr1 = (char *)svptr + dataoffset;	704	req->ptr2 = (char *)svptr + dataoffset;
1609	req->stroffset = dataoffset;	705	req->stroffset = dataoffset;
1610		706
1611	if (!SvREADONLY (data))	707	if (!SvREADONLY (data))
1612	{	708	{
1613	SvREADONLY_on (data);	709	SvREADONLY_on (data);
…		…
1624	PPCODE:	720	PPCODE:
1625	{	721	{
1626	SV *data;	722	SV *data;
1627	dREQ;	723	dREQ;
1628		724
1629	data = newSV (NAME_MAX);
1630	SvPOK_on (data);
1631
1632	req->type = REQ_READLINK;	725	req->type = EIO_READLINK;
1633	req->sv1 = newSVsv (path);	726	req->sv1 = newSVsv (path);
1634	req->ptr2 = SvPVbyte_nolen (req->sv1);	727	req->ptr1 = SvPVbyte_nolen (req->sv1);
1635	req->sv2 = data;
1636	req->ptr1 = SvPVbyte_nolen (data);
1637		728
1638	REQ_SEND;	729	REQ_SEND;
1639	}	730	}
1640		731
1641	void	732	void
…		…
1643	PROTOTYPE: $$$$;$	734	PROTOTYPE: $$$$;$
1644	PPCODE:	735	PPCODE:
1645	{	736	{
1646	dREQ;	737	dREQ;
1647		738
1648	req->type = REQ_SENDFILE;	739	req->type = EIO_SENDFILE;
1649	req->sv1 = newSVsv (out_fh);	740	req->sv1 = newSVsv (out_fh);
1650	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	741	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1651	req->sv2 = newSVsv (in_fh);	742	req->sv2 = newSVsv (in_fh);
1652	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	743	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1653	req->offs = SvVAL64 (in_offset);	744	req->offs = SvVAL64 (in_offset);
…		…
1661	PROTOTYPE: $$$;$	752	PROTOTYPE: $$$;$
1662	PPCODE:	753	PPCODE:
1663	{	754	{
1664	dREQ;	755	dREQ;
1665		756
1666	req->type = REQ_READAHEAD;	757	req->type = EIO_READAHEAD;
1667	req->sv1 = newSVsv (fh);	758	req->sv1 = newSVsv (fh);
1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	759	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1669	req->offs = SvVAL64 (offset);	760	req->offs = SvVAL64 (offset);
1670	req->size = length;	761	req->size = length;
1671		762
…		…
1673	}	764	}
1674		765
1675	void	766	void
1676	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	767	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1677	ALIAS:	768	ALIAS:
1678	aio_stat = REQ_STAT	769	aio_stat = EIO_STAT
1679	aio_lstat = REQ_LSTAT	770	aio_lstat = EIO_LSTAT
1680	PPCODE:	771	PPCODE:
1681	{	772	{
1682	dREQ;	773	dREQ;
1683		774
1684	req->ptr2 = malloc (sizeof (Stat_t));
1685	if (!req->ptr2)
1686	{
1687	req_destroy (req);
1688	croak ("out of memory during aio_stat statdata allocation");
1689	}
1690
1691	req->flags |= FLAG_PTR2_FREE;
1692	req->sv1 = newSVsv (fh_or_path);	775	req->sv1 = newSVsv (fh_or_path);
1693		776
1694	if (SvPOK (fh_or_path))	777	if (SvPOK (req->sv1))
1695	{	778	{
1696	req->type = ix;	779	req->type = ix;
1697	req->ptr1 = SvPVbyte_nolen (req->sv1);	780	req->ptr1 = SvPVbyte_nolen (req->sv1);
1698	}	781	}
1699	else	782	else
1700	{	783	{
1701	req->type = REQ_FSTAT;	784	req->type = EIO_FSTAT;
1702	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	785	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1703	}	786	}
1704		787
1705	REQ_SEND;	788	REQ_SEND;
1706	}	789	}
…		…
1713		796
1714	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	797	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1715	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	798	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1716	req->sv1 = newSVsv (fh_or_path);	799	req->sv1 = newSVsv (fh_or_path);
1717		800
1718	if (SvPOK (fh_or_path))	801	if (SvPOK (req->sv1))
1719	{	802	{
1720	req->type = REQ_UTIME;	803	req->type = EIO_UTIME;
1721	req->ptr1 = SvPVbyte_nolen (req->sv1);	804	req->ptr1 = SvPVbyte_nolen (req->sv1);
1722	}	805	}
1723	else	806	else
1724	{	807	{
1725	req->type = REQ_FUTIME;	808	req->type = EIO_FUTIME;
1726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	809	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1727	}	810	}
1728		811
1729	REQ_SEND;	812	REQ_SEND;
1730	}	813	}
…		…
1736	dREQ;	819	dREQ;
1737		820
1738	req->sv1 = newSVsv (fh_or_path);	821	req->sv1 = newSVsv (fh_or_path);
1739	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	822	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1740		823
1741	if (SvPOK (fh_or_path))	824	if (SvPOK (req->sv1))
1742	{	825	{
1743	req->type = REQ_TRUNCATE;	826	req->type = EIO_TRUNCATE;
1744	req->ptr1 = SvPVbyte_nolen (req->sv1);	827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1745	}	828	}
1746	else	829	else
1747	{	830	{
1748	req->type = REQ_FTRUNCATE;	831	req->type = EIO_FTRUNCATE;
1749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	832	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1750	}	833	}
1751		834
1752	REQ_SEND;	835	REQ_SEND;
1753	}	836	}
1754		837
1755	void	838	void
1756	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	839	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_chmod = EIO_CHMOD
		842	aio_mkdir = EIO_MKDIR
1757	PPCODE:	843	PPCODE:
1758	{	844	{
1759	dREQ;	845	dREQ;
1760		846
1761	req->mode = mode;	847	req->int2 = mode;
1762	req->sv1 = newSVsv (fh_or_path);	848	req->sv1 = newSVsv (fh_or_path);
1763		849
1764	if (SvPOK (fh_or_path))	850	if (SvPOK (req->sv1))
1765	{	851	{
1766	req->type = REQ_CHMOD;	852	req->type = ix;
1767	req->ptr1 = SvPVbyte_nolen (req->sv1);	853	req->ptr1 = SvPVbyte_nolen (req->sv1);
1768	}	854	}
1769	else	855	else
1770	{	856	{
1771	req->type = REQ_FCHMOD;	857	req->type = EIO_FCHMOD;
1772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	858	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1773	}	859	}
1774		860
1775	REQ_SEND;	861	REQ_SEND;
1776	}	862	}
…		…
1783		869
1784	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	870	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1785	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	871	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1786	req->sv1 = newSVsv (fh_or_path);	872	req->sv1 = newSVsv (fh_or_path);
1787		873
1788	if (SvPOK (fh_or_path))	874	if (SvPOK (req->sv1))
1789	{	875	{
1790	req->type = REQ_CHOWN;	876	req->type = EIO_CHOWN;
1791	req->ptr1 = SvPVbyte_nolen (req->sv1);	877	req->ptr1 = SvPVbyte_nolen (req->sv1);
1792	}	878	}
1793	else	879	else
1794	{	880	{
1795	req->type = REQ_FCHOWN;	881	req->type = EIO_FCHOWN;
1796	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1797	}	883	}
1798		884
1799	REQ_SEND;	885	REQ_SEND;
1800	}	886	}
1801		887
1802	void	888	void
1803	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	889	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1804	ALIAS:	890	ALIAS:
1805	aio_unlink = REQ_UNLINK	891	aio_unlink = EIO_UNLINK
1806	aio_rmdir = REQ_RMDIR	892	aio_rmdir = EIO_RMDIR
1807	aio_readdir = REQ_READDIR	893	aio_readdir = EIO_READDIR
1808	PPCODE:	894	PPCODE:
1809	{	895	{
1810	dREQ;	896	dREQ;
1811		897
1812	req->type = ix;	898	req->type = ix;
…		…
1815		901
1816	REQ_SEND;	902	REQ_SEND;
1817	}	903	}
1818		904
1819	void	905	void
1820	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	906	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		907	ALIAS:
		908	aio_link = EIO_LINK
		909	aio_symlink = EIO_SYMLINK
		910	aio_rename = EIO_RENAME
1821	PPCODE:	911	PPCODE:
1822	{	912	{
1823	dREQ;	913	dREQ;
1824		914
		915	req->type = ix;
		916	req->sv1 = newSVsv (oldpath);
		917	req->ptr1 = SvPVbyte_nolen (req->sv1);
		918	req->sv2 = newSVsv (newpath);
		919	req->ptr2 = SvPVbyte_nolen (req->sv2);
		920
		921	REQ_SEND;
		922	}
		923
		924	void
		925	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		926	PPCODE:
		927	{
		928	dREQ;
		929
1825	req->type = REQ_MKDIR;	930	req->type = EIO_MKNOD;
1826	req->sv1 = newSVsv (pathname);	931	req->sv1 = newSVsv (pathname);
1827	req->ptr1 = SvPVbyte_nolen (req->sv1);	932	req->ptr1 = SvPVbyte_nolen (req->sv1);
1828	req->mode = mode;
1829
1830	REQ_SEND;
1831	}
1832
1833	void
1834	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1835	ALIAS:
1836	aio_link = REQ_LINK
1837	aio_symlink = REQ_SYMLINK
1838	aio_rename = REQ_RENAME
1839	PPCODE:
1840	{
1841	dREQ;
1842
1843	req->type = ix;
1844	req->sv2 = newSVsv (oldpath);
1845	req->ptr2 = SvPVbyte_nolen (req->sv2);
1846	req->sv1 = newSVsv (newpath);
1847	req->ptr1 = SvPVbyte_nolen (req->sv1);
1848
1849	REQ_SEND;
1850	}
1851
1852	void
1853	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1854	PPCODE:
1855	{
1856	dREQ;
1857
1858	req->type = REQ_MKNOD;
1859	req->sv1 = newSVsv (pathname);
1860	req->ptr1 = SvPVbyte_nolen (req->sv1);
1861	req->mode = (mode_t)mode;	933	req->int2 = (mode_t)mode;
1862	req->offs = dev;	934	req->offs = dev;
1863		935
1864	REQ_SEND;	936	REQ_SEND;
1865	}	937	}
1866		938
…		…
1868	aio_busy (double delay, SV *callback=&PL_sv_undef)	940	aio_busy (double delay, SV *callback=&PL_sv_undef)
1869	PPCODE:	941	PPCODE:
1870	{	942	{
1871	dREQ;	943	dREQ;
1872		944
1873	req->type = REQ_BUSY;	945	req->type = EIO_BUSY;
1874	req->nv1 = delay < 0. ? 0. : delay;	946	req->nv1 = delay < 0. ? 0. : delay;
1875		947
1876	REQ_SEND;	948	REQ_SEND;
1877	}	949	}
1878		950
…		…
1881	PROTOTYPE: ;$	953	PROTOTYPE: ;$
1882	PPCODE:	954	PPCODE:
1883	{	955	{
1884	dREQ;	956	dREQ;
1885		957
1886	req->type = REQ_GROUP;	958	req->type = EIO_GROUP;
1887		959
1888	req_send (req);	960	req_submit (req);
1889	XPUSHs (req_sv (req, AIO_GRP_KLASS));	961	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1890	}	962	}
1891		963
1892	void	964	void
1893	aio_nop (SV *callback=&PL_sv_undef)	965	aio_nop (SV *callback=&PL_sv_undef)
1894	ALIAS:	966	ALIAS:
1895	aio_nop = REQ_NOP	967	aio_nop = EIO_NOP
1896	aio_sync = REQ_SYNC	968	aio_sync = EIO_SYNC
1897	PPCODE:	969	PPCODE:
1898	{	970	{
1899	dREQ;	971	dREQ;
1900		972
1901	req->type = ix;	973	req->type = ix;
…		…
1905		977
1906	int	978	int
1907	aioreq_pri (int pri = 0)	979	aioreq_pri (int pri = 0)
1908	PROTOTYPE: ;$	980	PROTOTYPE: ;$
1909	CODE:	981	CODE:
1910	RETVAL = next_pri - PRI_BIAS;	982	RETVAL = next_pri;
1911	if (items > 0)	983	if (items > 0)
1912	{	984	{
1913	if (pri < PRI_MIN) pri = PRI_MIN;	985	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1914	if (pri > PRI_MAX) pri = PRI_MAX;	986	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1915	next_pri = pri + PRI_BIAS;	987	next_pri = pri;
1916	}	988	}
1917	OUTPUT:	989	OUTPUT:
1918	RETVAL	990	RETVAL
1919		991
1920	void	992	void
1921	aioreq_nice (int nice = 0)	993	aioreq_nice (int nice = 0)
1922	CODE:	994	CODE:
1923	nice = next_pri - nice;	995	nice = next_pri - nice;
1924	if (nice < PRI_MIN) nice = PRI_MIN;	996	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1925	if (nice > PRI_MAX) nice = PRI_MAX;	997	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1926	next_pri = nice + PRI_BIAS;	998	next_pri = nice;
1927		999
1928	void	1000	void
1929	flush ()	1001	flush ()
1930	PROTOTYPE:	1002	PROTOTYPE:
1931	CODE:	1003	CODE:
1932	while (nreqs)	1004	while (eio_nreqs ())
1933	{	1005	{
1934	poll_wait ();	1006	poll_wait ();
1935	poll_cb ();	1007	poll_cb ();
1936	}	1008	}
1937		1009
…		…
1964	poll_wait()	1036	poll_wait()
1965	PROTOTYPE:	1037	PROTOTYPE:
1966	CODE:	1038	CODE:
1967	poll_wait ();	1039	poll_wait ();
1968		1040
1969	void
1970	setsig (int signum = SIGIO)
1971	PROTOTYPE: ;$
1972	CODE:
1973	{
1974	if (block_sig_level)
1975	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1976
1977	X_LOCK (reslock);
1978	main_tid = pthread_self ();
1979	main_sig = signum;
1980	X_UNLOCK (reslock);
1981
1982	if (main_sig && npending)
1983	pthread_kill (main_tid, main_sig);
1984	}
1985
1986	void
1987	aio_block (SV *cb)
1988	PROTOTYPE: &
1989	PPCODE:
1990	{
1991	int count;
1992
1993	block_sig ();
1994	PUSHMARK (SP);
1995	PUTBACK;
1996	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1997	SPAGAIN;
1998	unblock_sig ();
1999
2000	if (SvTRUE (ERRSV))
2001	croak (0);
2002
2003	XSRETURN (count);
2004	}
2005
2006	int	1041	int
2007	nreqs()	1042	nreqs()
2008	PROTOTYPE:	1043	PROTOTYPE:
2009	CODE:	1044	CODE:
2010	RETVAL = nreqs;	1045	RETVAL = eio_nreqs ();
2011	OUTPUT:	1046	OUTPUT:
2012	RETVAL	1047	RETVAL
2013		1048
2014	int	1049	int
2015	nready()	1050	nready()
2016	PROTOTYPE:	1051	PROTOTYPE:
2017	CODE:	1052	CODE:
2018	RETVAL = get_nready ();	1053	RETVAL = eio_nready ();
2019	OUTPUT:	1054	OUTPUT:
2020	RETVAL	1055	RETVAL
2021		1056
2022	int	1057	int
2023	npending()	1058	npending()
2024	PROTOTYPE:	1059	PROTOTYPE:
2025	CODE:	1060	CODE:
2026	RETVAL = get_npending ();	1061	RETVAL = eio_npending ();
2027	OUTPUT:	1062	OUTPUT:
2028	RETVAL	1063	RETVAL
2029		1064
2030	int	1065	int
2031	nthreads()	1066	nthreads()
2032	PROTOTYPE:	1067	PROTOTYPE:
2033	CODE:	1068	CODE:
2034	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1069	RETVAL = eio_nthreads ();
2035	RETVAL = started;
2036	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2037	OUTPUT:	1070	OUTPUT:
2038	RETVAL	1071	RETVAL
2039		1072
		1073	void _on_next_submit (SV *cb)
		1074	CODE:
		1075	SvREFCNT_dec (on_next_submit);
		1076	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1077
2040	PROTOTYPES: DISABLE	1078	PROTOTYPES: DISABLE
2041		1079
2042	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1080	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2043		1081
2044	void	1082	void
2045	cancel (aio_req_ornot req)	1083	cancel (aio_req_ornot req)
2046	CODE:	1084	CODE:
2047	req_cancel (req);	1085	eio_cancel (req);
2048		1086
2049	void	1087	void
2050	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1088	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2051	CODE:	1089	PPCODE:
		1090	{
		1091	if (GIMME_V != G_VOID)
		1092	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1093
		1094	if (items > 1)
		1095	{
		1096	SV *cb_cv = get_cb (callback);
		1097
2052	SvREFCNT_dec (req->callback);	1098	SvREFCNT_dec (req->callback);
2053	req->callback = newSVsv (callback);	1099	req->callback = SvREFCNT_inc (cb_cv);
		1100	}
		1101	}
2054		1102
2055	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1103	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2056		1104
2057	void	1105	void
2058	add (aio_req grp, ...)	1106	add (aio_req grp, ...)
2059	PPCODE:	1107	PPCODE:
2060	{	1108	{
2061	int i;	1109	int i;
2062	aio_req req;
2063
2064	if (main_sig && !block_sig_level)
2065	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2066		1110
2067	if (grp->int1 == 2)	1111	if (grp->int1 == 2)
2068	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1112	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2069		1113
2070	for (i = 1; i < items; ++i )	1114	for (i = 1; i < items; ++i )
2071	{	1115	{
		1116	aio_req req;
		1117
2072	if (GIMME_V != G_VOID)	1118	if (GIMME_V != G_VOID)
2073	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1119	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2074		1120
2075	req = SvAIO_REQ (ST (i));	1121	req = SvAIO_REQ (ST (i));
2076		1122
2077	if (req)	1123	if (req)
2078	{	1124	eio_grp_add (grp, req);
2079	++grp->size;
2080	req->grp = grp;
2081
2082	req->grp_prev = 0;
2083	req->grp_next = grp->grp_first;
2084
2085	if (grp->grp_first)
2086	grp->grp_first->grp_prev = req;
2087
2088	grp->grp_first = req;
2089	}
2090	}	1125	}
2091	}	1126	}
2092		1127
2093	void	1128	void
2094	cancel_subs (aio_req_ornot req)	1129	cancel_subs (aio_req_ornot req)
…		…
2119	grp->errorno = errorno;	1154	grp->errorno = errorno;
2120		1155
2121	void	1156	void
2122	limit (aio_req grp, int limit)	1157	limit (aio_req grp, int limit)
2123	CODE:	1158	CODE:
2124	grp->int2 = limit;	1159	eio_grp_limit (grp, limit);
2125	aio_grp_feed (grp);
2126		1160
2127	void	1161	void
2128	feed (aio_req grp, SV *callback=&PL_sv_undef)	1162	feed (aio_req grp, SV *callback=&PL_sv_undef)
2129	CODE:	1163	CODE:
2130	{	1164	{
2131	SvREFCNT_dec (grp->sv2);	1165	SvREFCNT_dec (grp->sv2);
2132	grp->sv2 = newSVsv (callback);	1166	grp->sv2 = newSVsv (callback);
		1167	grp->feed = aio_grp_feed;
2133		1168
2134	if (grp->int2 <= 0)	1169	if (grp->int2 <= 0)
2135	grp->int2 = 2;	1170	grp->int2 = 2;
2136		1171
2137	aio_grp_feed (grp);	1172	eio_grp_limit (grp, grp->int2);
2138	}	1173	}
2139		1174

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