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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.128 by root, Tue Sep 30 14:07:59 2008 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
…		…
13	#include <sys/stat.h>	13	#include <sys/stat.h>
14	#include <limits.h>	14	#include <limits.h>
15	#include <fcntl.h>	15	#include <fcntl.h>
16	#include <sched.h>	16	#include <sched.h>
17		17
		18	/* perl namespace pollution */
		19	#undef VERSION
		20
18	#ifdef _WIN32	21	#ifdef _WIN32
19		22
20	# define SIGIO 0	23	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	24	# undef malloc
23	#undef free	25	# undef free
24		26
25	// perl overrides all those nice win32 functions	27	// perl overrides all those nice win32 functions
26	# undef open	28	# undef open
27	# undef read	29	# undef read
28	# undef write	30	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	56	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	57	# define mkdir(a,b) mkdir (a)
56		58
57	#else	59	#else
58		60
59	# include "autoconf/config.h"
60	# include <sys/time.h>	61	# include <sys/time.h>
61	# include <sys/select.h>	62	# include <sys/select.h>
62	# include <unistd.h>	63	# include <unistd.h>
63	# include <utime.h>	64	# include <utime.h>
64	# include <signal.h>	65	# include <signal.h>
65	typedef struct dirent X_DIRENT;	66	# define EIO_STRUCT_DIRENT struct dirent
66		67
67	#endif	68	#endif
68		69
69	#if HAVE_SENDFILE	70	/* 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
102	#define dBUF \	85	/*****************************************************************************/
103	char *aio_buf; \
104	X_LOCK (wrklock); \
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
106	X_UNLOCK (wrklock); \
107	if (!aio_buf) \
108	return -1;
109		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
		98	static HV *stash;
110	typedef SV SV8; /* byte-sv, used for argument-checking */	99	typedef SV SV8; /* byte-sv, used for argument-checking */
111
112	enum {
113	REQ_QUIT,
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};
129		100
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
132		103
133	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
134	{
135	struct aio_cb *volatile next;
136
137	SV *callback;	105	SV *callback; \
138	SV *sv1, *sv2;	106	SV *sv1, *sv2; \
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144
145	STRLEN stroffset;	107	STRLEN stroffset; \
146	int type;	108	SV *self;
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150		109
151	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
152	unsigned char pri;
153		111
154	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
156	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void aio_grp_feed (eio_req *grp);
		117	#define EIO_FEED(req) aio_grp_feed (req)
		118	static void req_destroy (eio_req *grp);
		119	#define EIO_DESTROY(req) req_destroy (req)
157		120
158	enum {	121	enum {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	122	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};	123	};
163		124
		125	#include "libeio/eio.c"
		126
164	typedef aio_cb *aio_req;	127	typedef eio_req *aio_req;
165	typedef aio_cb *aio_req_ornot;	128	typedef eio_req *aio_req_ornot;
166		129
167	enum {	130	static SV *on_next_submit;
168	PRI_MIN = -4,	131	static int next_pri = EIO_PRI_DEFAULT;
169	PRI_MAX = 4,	132	static int max_outstanding;
170		133
171	DEFAULT_PRI = 0,
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187
188	static thread_t main_tid;
189	static int main_sig;
190	static int block_sig_level;
191
192	void block_sig ()
193	{
194	sigset_t ss;
195
196	if (block_sig_level++)
197	return;
198
199	if (!main_sig)
200	return;
201
202	sigemptyset (&ss);
203	sigaddset (&ss, main_sig);
204	pthread_sigmask (SIG_BLOCK, &ss, 0);
205	}
206
207	void unblock_sig ()
208	{
209	sigset_t ss;
210
211	if (--block_sig_level)
212	return;
213
214	if (!main_sig)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{
247	closedir (wrk->dirp);
248	wrk->dirp = 0;
249	}
250
251	if (wrk->dbuf)
252	{
253	free (wrk->dbuf);
254	wrk->dbuf = 0;
255	}
256	}
257
258	static void worker_free (worker *wrk)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe_osf [2], respipe [2] = { -1, -1 };	134	static int respipe_osf [2], respipe [2] = { -1, -1 };
270		135
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;
353
354	--q->size;
355
356	for (pri = NUM_PRI; pri--; )
357	{
358	aio_req req = q->qs[pri];
359
360	if (req)
361	{
362	if (!(q->qs[pri] = req->next))
363	q->qe[pri] = 0;
364
365	return req;
366	}
367	}
368
369	abort ();
370	}
371
372	static int poll_cb ();
373	static int req_invoke (aio_req req);
374	static void req_destroy (aio_req req);	136	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	137	static void req_cancel (aio_req req);
		138
		139	static void want_poll (void)
		140	{
		141	/* write a dummy byte to the pipe so fh becomes ready */
		142	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		143	}
		144
		145	static void done_poll (void)
		146	{
		147	/* read any signals sent by the worker threads */
		148	char buf [4];
		149	while (respipe_read (respipe [0], buf, 4) == 4)
		150	;
		151	}
376		152
377	/* must be called at most once */	153	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	154	static SV *req_sv (aio_req req, const char *klass)
379	{	155	{
380	if (!req->self)	156	if (!req->self)
…		…
398	return mg ? (aio_req)mg->mg_ptr : 0;	174	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	175	}
400		176
401	static void aio_grp_feed (aio_req grp)	177	static void aio_grp_feed (aio_req grp)
402	{	178	{
403	block_sig ();	179	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	180	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	181	dSP;
412		182
413	ENTER;	183	ENTER;
414	SAVETMPS;	184	SAVETMPS;
415	PUSHMARK (SP);	185	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	186	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
417	PUTBACK;	187	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	188	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	189	SPAGAIN;
420	FREETMPS;	190	FREETMPS;
421	LEAVE;	191	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	192	}
432
433	unblock_sig ();
434	}	193	}
435		194
436	static void aio_grp_dec (aio_req grp)	195	static void req_submit (eio_req *req)
437	{	196	{
438	--grp->size;	197	eio_submit (req);
439		198
440	/* call feeder, if applicable */	199	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	200	{
446	block_sig ();	201	dSP;
		202	SV *cb = sv_2mortal (on_next_submit);
447		203
448	if (!req_invoke (grp))	204	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		205
455	req_destroy (grp);	206	PUSHMARK (SP);
456	unblock_sig ();	207	PUTBACK;
		208	call_sv (cb, G_DISCARD | G_EVAL);
457	}	209	}
458	}	210	}
459		211
460	static int req_invoke (aio_req req)	212	static int req_invoke (eio_req *req)
461	{	213	{
462	dSP;	214	dSP;
463		215
464	if (req->flags & FLAG_SV2_RO_OFF)	216	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	217	SvREADONLY_off (req->sv2);
466		218
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	219	if (!EIO_CANCELLED (req) && req->callback)
468	{	220	{
469	ENTER;	221	ENTER;
470	SAVETMPS;	222	SAVETMPS;
471	PUSHMARK (SP);	223	PUSHMARK (SP);
472	EXTEND (SP, 1);	224	EXTEND (SP, 1);
473		225
474	switch (req->type)	226	switch (req->type)
475	{	227	{
476	case REQ_READDIR:	228	case EIO_READDIR:
477	{	229	{
478	SV *rv = &PL_sv_undef;	230	SV *rv = &PL_sv_undef;
479		231
480	if (req->result >= 0)	232	if (req->result >= 0)
481	{	233	{
…		…
498		250
499	PUSHs (rv);	251	PUSHs (rv);
500	}	252	}
501	break;	253	break;
502		254
503	case REQ_OPEN:	255	case EIO_OPEN:
504	{	256	{
505	/* convert fd to fh */	257	/* convert fd to fh */
506	SV *fh;	258	SV *fh = &PL_sv_undef;
507		259
508	PUSHs (sv_2mortal (newSViv (req->result)));	260	if (req->result >= 0)
509	PUTBACK;	261	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	262	GV *gv = (GV *)sv_newmortal ();
511	SPAGAIN;	263	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		264	char sym [64];
		265	int symlen;
		266
		267	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		268	gv_init (gv, stash, sym, symlen, 0);
512		269
513	fh = POPs;	270	symlen = snprintf (
514	PUSHMARK (SP);	271	sym,
		272	sizeof (sym),
		273	"%s&=%d",
		274	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		275	req->result
		276	);
		277
		278	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		279	fh = (SV *)gv;
		280	}
		281
515	XPUSHs (fh);	282	PUSHs (fh);
516	}	283	}
517	break;	284	break;
518		285
519	case REQ_GROUP:	286	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	287	req->int1 = 2; /* mark group as finished */
521		288
522	if (req->sv1)	289	if (req->sv1)
523	{	290	{
524	int i;	291	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	295	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	296	PUSHs (*av_fetch (av, i, 0));
530	}	297	}
531	break;	298	break;
532		299
533	case REQ_NOP:	300	case EIO_NOP:
534	case REQ_BUSY:	301	case EIO_BUSY:
535	break;	302	break;
536		303
537	case REQ_READLINK:	304	case EIO_READLINK:
538	if (req->result > 0)	305	if (req->result > 0)
539	{	306	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
540	SvCUR_set (req->sv2, req->result);
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);
543	}
544	break;	307	break;
545		308
546	case REQ_STAT:	309	case EIO_STAT:
547	case REQ_LSTAT:	310	case EIO_LSTAT:
548	case REQ_FSTAT:	311	case EIO_FSTAT:
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	312	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
550	PL_laststatval = req->result;	313	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);	314	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));	315	PUSHs (sv_2mortal (newSViv (req->result)));
553	break;	316	break;
554		317
555	case REQ_READ:	318	case EIO_READ:
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	319	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;	320	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));	321	PUSHs (sv_2mortal (newSViv (req->result)));
559	break;	322	break;
560		323
		324	case EIO_DUP2:
		325	if (req->result > 0)
		326	req->result = 0;
		327	/* FALLTHROUGH */
		328
561	default:	329	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	330	PUSHs (sv_2mortal (newSViv (req->result)));
563	break;	331	break;
564	}	332	}
565		333
566	errno = req->errorno;	334	errno = req->errorno;
567		335
568	PUTBACK;	336	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	337	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	338	SPAGAIN;
571		339
572	FREETMPS;	340	FREETMPS;
573	LEAVE;	341	LEAVE;
		342
		343	PUTBACK;
574	}	344	}
575		345
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	346	return !!SvTRUE (ERRSV);
591	}	347	}
592		348
593	static void req_destroy (aio_req req)	349	static void req_destroy (aio_req req)
594	{	350	{
595	if (req->self)	351	if (req->self)
…		…
600		356
601	SvREFCNT_dec (req->sv1);	357	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	358	SvREFCNT_dec (req->sv2);
603	SvREFCNT_dec (req->callback);	359	SvREFCNT_dec (req->callback);
604		360
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	361	Safefree (req);
609	}	362	}
610		363
611	static void req_cancel_subs (aio_req grp)	364	static void req_cancel_subs (aio_req grp)
612	{	365	{
613	aio_req sub;	366	aio_req sub;
614		367
615	if (grp->type != REQ_GROUP)	368	if (grp->type != EIO_GROUP)
616	return;	369	return;
617		370
618	SvREFCNT_dec (grp->sv2);	371	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	372	grp->sv2 = 0;
620		373
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	374	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}
624
625	static void req_cancel (aio_req req)
626	{
627	req->flags |= FLAG_CANCELLED;
628
629	req_cancel_subs (req);
630	}	375	}
631		376
632	#ifdef USE_SOCKETS_AS_HANDLES	377	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))	378	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else	379	#else
635	# define TO_SOCKET(x) (x)	380	# define TO_SOCKET(x) (x)
636	#endif	381	#endif
637		382
638	static void	383	static void
639	create_respipe ()	384	create_respipe (void)
640	{	385	{
641	int old_readfd = respipe [0];	386	int old_readfd = respipe [0];
642		387
643	if (respipe [1] >= 0)	388	if (respipe [1] >= 0)
644	respipe_close (TO_SOCKET (respipe [1]));	389	respipe_close (TO_SOCKET (respipe [1]));
…		…
671		416
672	respipe_osf [0] = TO_SOCKET (respipe [0]);	417	respipe_osf [0] = TO_SOCKET (respipe [0]);
673	respipe_osf [1] = TO_SOCKET (respipe [1]);	418	respipe_osf [1] = TO_SOCKET (respipe [1]);
674	}	419	}
675		420
676	X_THREAD_PROC (aio_proc);
677
678	static void start_thread (void)
679	{
680	worker *wrk = calloc (1, sizeof (worker));
681
682	if (!wrk)
683	croak ("unable to allocate worker thread data");
684
685	X_LOCK (wrklock);
686
687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688	{
689	wrk->prev = &wrk_first;
690	wrk->next = wrk_first.next;
691	wrk_first.next->prev = wrk;
692	wrk_first.next = wrk;
693	++started;
694	}
695	else
696	free (wrk);
697
698	X_UNLOCK (wrklock);
699	}
700
701	static void maybe_start_thread ()
702	{
703	if (get_nthreads () >= wanted)
704	return;
705
706	/* todo: maybe use idle here, but might be less exact */
707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708	return;
709
710	start_thread ();
711	}
712
713	static void req_send (aio_req req)
714	{
715	block_sig ();
716
717	++nreqs;
718
719	X_LOCK (reqlock);
720	++nready;
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	unblock_sig ();
726
727	maybe_start_thread ();
728	}
729
730	static void end_thread (void)
731	{
732	aio_req req;
733
734	Newz (0, req, 1, aio_cb);
735
736	req->type = REQ_QUIT;
737	req->pri = PRI_MAX + PRI_BIAS;
738
739	X_LOCK (reqlock);
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	X_LOCK (wrklock);
745	--started;
746	X_UNLOCK (wrklock);
747	}
748
749	static void set_max_idle (int nthreads)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752	max_idle = nthreads <= 0 ? 1 : nthreads;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754	}
755
756	static void min_parallel (int nthreads)
757	{
758	if (wanted < nthreads)
759	wanted = nthreads;
760	}
761
762	static void max_parallel (int nthreads)
763	{
764	if (wanted > nthreads)
765	wanted = nthreads;
766
767	while (started > wanted)
768	end_thread ();
769	}
770
771	static void poll_wait ()	421	static void poll_wait (void)
772	{	422	{
773	fd_set rfd;	423	fd_set rfd;
774		424
775	while (nreqs)	425	while (eio_nreqs ())
776	{	426	{
777	int size;	427	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	428
		429	X_LOCK (reslock);
779	size = res_queue.size;	430	size = res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	431	X_UNLOCK (reslock);
781		432
782	if (size)	433	if (size)
783	return;	434	return;
784		435
785	maybe_start_thread ();	436	etp_maybe_start_thread ();
786		437
787	FD_ZERO (&rfd);	438	FD_ZERO (&rfd);
788	FD_SET (respipe [0], &rfd);	439	FD_SET (respipe [0], &rfd);
789		440
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);	441	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	442	}
792	}	443	}
793		444
794	static int poll_cb ()	445	static int poll_cb (void)
795	{	446	{
796	dSP;
797	int count = 0;
798	int maxreqs = max_poll_reqs;
799	int do_croak = 0;
800	struct timeval tv_start, tv_now;
801	aio_req req;
802
803	if (max_poll_time)
804	gettimeofday (&tv_start, 0);
805
806	block_sig ();
807
808	for (;;)	447	for (;;)
809	{	448	{
810	for (;;)	449	int res = eio_poll ();
811	{
812	maybe_start_thread ();
813		450
814	X_LOCK (reslock);	451	if (res > 0)
815	req = reqq_shift (&res_queue);
816
817	if (req)
818	{
819	--npending;
820
821	if (!res_queue.size)
822	{
823	/* read any signals sent by the worker threads */
824	char buf [4];
825	while (respipe_read (respipe [0], buf, 4) == 4)
826	;
827	}
828	}
829
830	X_UNLOCK (reslock);
831
832	if (!req)
833	break;
834
835	--nreqs;
836
837	if (req->type == REQ_GROUP && req->size)
838	{
839	req->int1 = 1; /* mark request as delayed */
840	continue;
841	}
842	else
843	{
844	if (!req_invoke (req))
845	{
846	req_destroy (req);
847	unblock_sig ();
848	croak (0);	452	croak (0);
849	}
850		453
851	count++;	454	if (!max_outstanding || max_outstanding > eio_nreqs ())
852	}	455	return res;
853
854	req_destroy (req);
855
856	if (maxreqs && !--maxreqs)
857	break;
858
859	if (max_poll_time)
860	{
861	gettimeofday (&tv_now, 0);
862
863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864	break;
865	}
866	}
867
868	if (nreqs <= max_outstanding)
869	break;
870		456
871	poll_wait ();	457	poll_wait ();
872
873	++maxreqs;
874	}	458	}
875
876	unblock_sig ();
877	return count;
878	}	459	}
879		460
880	/*****************************************************************************/	461	static void atfork_child (void)
881	/* work around various missing functions */
882
883	#if !HAVE_PREADWRITE
884	# define pread aio_pread
885	# define pwrite aio_pwrite
886
887	/*
888	* make our pread/pwrite safe against themselves, but not against
889	* normal read/write by using a mutex. slows down execution a lot,
890	* but that's your problem, not mine.
891	*/
892	static mutex_t preadwritelock = X_MUTEX_INIT;
893
894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895	{	462	{
896	ssize_t res;	463	create_respipe ();
897	off_t ooffset;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}	464	}
908		465
909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	466	static SV *
		467	get_cb (SV *cb_sv)
910	{	468	{
911	ssize_t res;	469	HV *st;
912	off_t ooffset;	470	GV *gvp;
		471	CV *cv;
913		472
914	X_LOCK (preadwritelock);	473	if (!SvOK (cb_sv))
915	ooffset = lseek (fd, 0, SEEK_CUR);
916	lseek (fd, offset, SEEK_SET);
917	res = write (fd, buf, count);
918	lseek (fd, offset, SEEK_SET);
919	X_UNLOCK (preadwritelock);
920
921	return res;
922	}
923	#endif
924
925	#ifndef HAVE_FUTIMES
926
927	# define utimes(path,times) aio_utimes (path, times)
928	# define futimes(fd,times) aio_futimes (fd, times)
929
930	int aio_utimes (const char *filename, const struct timeval times[2])
931	{
932	if (times)
933	{
934	struct utimbuf buf;
935
936	buf.actime = times[0].tv_sec;
937	buf.modtime = times[1].tv_sec;
938
939	return utime (filename, &buf);
940	}
941	else
942	return utime (filename, 0);
943	}
944
945	int aio_futimes (int fd, const struct timeval tv[2])
946	{
947	errno = ENOSYS;
948	return -1;
949	}
950
951	#endif
952
953	#if !HAVE_FDATASYNC
954	# define fdatasync fsync
955	#endif
956
957	#if !HAVE_READAHEAD
958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961	{
962	size_t todo = count;
963	dBUF;
964
965	while (todo > 0)
966	{
967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969	pread (fd, aio_buf, len, offset);
970	offset += len;
971	todo -= len;
972	}
973
974	errno = 0;
975	return count;
976	}
977
978	#endif
979
980	#if !HAVE_READDIR_R
981	# define readdir_r aio_readdir_r
982
983	static mutex_t readdirlock = X_MUTEX_INIT;
984
985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986	{
987	X_DIRENT *e;
988	int errorno;
989
990	X_LOCK (readdirlock);
991
992	e = readdir (dirp);
993	errorno = errno;
994
995	if (e)
996	{
997	*res = ent;
998	strcpy (ent->d_name, e->d_name);
999	}
1000	else
1001	*res = 0;
1002
1003	X_UNLOCK (readdirlock);
1004
1005	errno = errorno;
1006	return e ? 0 : -1;
1007	}
1008	#endif
1009
1010	/* sendfile always needs emulation */
1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012	{
1013	ssize_t res;
1014
1015	if (!count)
1016	return 0;	474	return 0;
1017		475
1018	#if HAVE_SENDFILE	476	cv = sv_2cv (cb_sv, &st, &gvp, 0);
1019	# if __linux
1020	res = sendfile (ofd, ifd, &offset, count);
1021		477
1022	# elif __freebsd	478	if (!cv)
1023	/*	479	croak ("IO::AIO watcher callback must be undef or a CODE reference");
1024	* Of course, the freebsd sendfile is a dire hack with no thoughts
1025	* wasted on making it similar to other I/O functions.
1026	*/
1027	{
1028	off_t sbytes;
1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030		480
1031	if (res < 0 && sbytes)	481	return (SV *)cv;
1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033	res = sbytes;
1034	}
1035
1036	# elif __hpux
1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039	# elif __solaris
1040	{
1041	struct sendfilevec vec;
1042	size_t sbytes;
1043
1044	vec.sfv_fd = ifd;
1045	vec.sfv_flag = 0;
1046	vec.sfv_off = offset;
1047	vec.sfv_len = count;
1048
1049	res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051	if (res < 0 && sbytes)
1052	res = sbytes;
1053	}
1054
1055	# endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060
1061	if (res < 0
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063	#if __solaris
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071
1072	res = 0;
1073
1074	while (count)
1075	{
1076	ssize_t cnt;
1077
1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079
1080	if (cnt <= 0)
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085
1086	cnt = write (ofd, aio_buf, cnt);
1087
1088	if (cnt <= 0)
1089	{
1090	if (cnt && !res) res = -1;
1091	break;
1092	}
1093
1094	offset += cnt;
1095	res += cnt;
1096	count -= cnt;
1097	}
1098	}
1099
1100	return res;
1101	}
1102
1103	/* read a full directory */
1104	static void scandir_ (aio_req req, worker *self)
1105	{
1106	DIR *dirp;
1107	union
1108	{
1109	X_DIRENT d;
1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111	} *u;
1112	X_DIRENT *entp;
1113	char *name, *names;
1114	int memlen = 4096;
1115	int memofs = 0;
1116	int res = 0;
1117
1118	X_LOCK (wrklock);
1119	self->dirp = dirp = opendir (req->ptr1);
1120	self->dbuf = u = malloc (sizeof (*u));
1121	req->flags |= FLAG_PTR2_FREE;
1122	req->ptr2 = names = malloc (memlen);
1123	X_UNLOCK (wrklock);
1124
1125	if (dirp && u && names)
1126	for (;;)
1127	{
1128	errno = 0;
1129	readdir_r (dirp, &u->d, &entp);
1130
1131	if (!entp)
1132	break;
1133
1134	name = entp->d_name;
1135
1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137	{
1138	int len = strlen (name) + 1;
1139
1140	res++;
1141
1142	while (memofs + len > memlen)
1143	{
1144	memlen *= 2;
1145	X_LOCK (wrklock);
1146	req->ptr2 = names = realloc (names, memlen);
1147	X_UNLOCK (wrklock);
1148
1149	if (!names)
1150	break;
1151	}
1152
1153	memcpy (names + memofs, name, len);
1154	memofs += len;
1155	}
1156	}
1157
1158	if (errno)
1159	res = -1;
1160
1161	req->result = res;
1162	}
1163
1164	/*****************************************************************************/
1165
1166	X_THREAD_PROC (aio_proc)
1167	{
1168	{//D
1169	aio_req req;
1170	struct timespec ts;
1171	worker *self = (worker *)thr_arg;
1172
1173	/* try to distribute timeouts somewhat randomly */
1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176	for (;;)
1177	{
1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180	X_LOCK (reqlock);
1181
1182	for (;;)
1183	{
1184	self->req = req = reqq_shift (&req_queue);
1185
1186	if (req)
1187	break;
1188
1189	++idle;
1190
1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192	== ETIMEDOUT)
1193	{
1194	if (idle > max_idle)
1195	{
1196	--idle;
1197	X_UNLOCK (reqlock);
1198	X_LOCK (wrklock);
1199	--started;
1200	X_UNLOCK (wrklock);
1201	goto quit;
1202	}
1203
1204	/* we are allowed to idle, so do so without any timeout */
1205	X_COND_WAIT (reqwait, reqlock);
1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207	}
1208
1209	--idle;
1210	}
1211
1212	--nready;
1213
1214	X_UNLOCK (reqlock);
1215
1216	errno = 0; /* strictly unnecessary */
1217
1218	if (!(req->flags & FLAG_CANCELLED))
1219	switch (req->type)
1220	{
1221	case REQ_READ: req->result = req->offs >= 0
1222	? pread (req->int1, req->ptr1, req->size, req->offs)
1223	: read (req->int1, req->ptr1, req->size); break;
1224	case REQ_WRITE: req->result = req->offs >= 0
1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226	: write (req->int1, req->ptr1, req->size); break;
1227
1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243	case REQ_CLOSE: req->result = close (req->int1); break;
1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
1255	case REQ_READDIR: scandir_ (req, self); break;
1256
1257	case REQ_BUSY:
1258	#ifdef _WIN32
1259	Sleep (req->nv1 * 1000.);
1260	#else
1261	{
1262	struct timeval tv;
1263
1264	tv.tv_sec = req->nv1;
1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267	req->result = select (0, 0, 0, 0, &tv);
1268	}
1269	#endif
1270	break;
1271
1272	case REQ_UTIME:
1273	case REQ_FUTIME:
1274	{
1275	struct timeval tv[2];
1276	struct timeval *times;
1277
1278	if (req->nv1 != -1. || req->nv2 != -1.)
1279	{
1280	tv[0].tv_sec = req->nv1;
1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282	tv[1].tv_sec = req->nv2;
1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285	times = tv;
1286	}
1287	else
1288	times = 0;
1289
1290
1291	req->result = req->type == REQ_FUTIME
1292	? futimes (req->int1, times)
1293	: utimes (req->ptr1, times);
1294	}
1295
1296	case REQ_GROUP:
1297	case REQ_NOP:
1298	break;
1299
1300	case REQ_QUIT:
1301	goto quit;
1302
1303	default:
1304	req->result = -1;
1305	break;
1306	}
1307
1308	req->errorno = errno;
1309
1310	X_LOCK (reslock);
1311
1312	++npending;
1313
1314	if (!reqq_push (&res_queue, req))
1315	{
1316	/* write a dummy byte to the pipe so fh becomes ready */
1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319	/* optionally signal the main thread asynchronously */
1320	if (main_sig)
1321	pthread_kill (main_tid, main_sig);
1322	}
1323
1324	self->req = 0;
1325	worker_clear (self);
1326
1327	X_UNLOCK (reslock);
1328	}
1329
1330	quit:
1331	X_LOCK (wrklock);
1332	worker_free (self);
1333	X_UNLOCK (wrklock);
1334
1335	return 0;
1336	}//D
1337	}
1338
1339	/*****************************************************************************/
1340
1341	static void atfork_prepare (void)
1342	{
1343	X_LOCK (wrklock);
1344	X_LOCK (reqlock);
1345	X_LOCK (reslock);
1346	#if !HAVE_PREADWRITE
1347	X_LOCK (preadwritelock);
1348	#endif
1349	#if !HAVE_READDIR_R
1350	X_LOCK (readdirlock);
1351	#endif
1352	}
1353
1354	static void atfork_parent (void)
1355	{
1356	#if !HAVE_READDIR_R
1357	X_UNLOCK (readdirlock);
1358	#endif
1359	#if !HAVE_PREADWRITE
1360	X_UNLOCK (preadwritelock);
1361	#endif
1362	X_UNLOCK (reslock);
1363	X_UNLOCK (reqlock);
1364	X_UNLOCK (wrklock);
1365	}
1366
1367	static void atfork_child (void)
1368	{
1369	aio_req prv;
1370
1371	while (prv = reqq_shift (&req_queue))
1372	req_destroy (prv);
1373
1374	while (prv = reqq_shift (&res_queue))
1375	req_destroy (prv);
1376
1377	while (wrk_first.next != &wrk_first)
1378	{
1379	worker *wrk = wrk_first.next;
1380
1381	if (wrk->req)
1382	req_destroy (wrk->req);
1383
1384	worker_clear (wrk);
1385	worker_free (wrk);
1386	}
1387
1388	started = 0;
1389	idle = 0;
1390	nreqs = 0;
1391	nready = 0;
1392	npending = 0;
1393
1394	create_respipe ();
1395
1396	atfork_parent ();
1397	}	482	}
1398		483
1399	#define dREQ \	484	#define dREQ \
		485	SV *cb_cv; \
1400	aio_req req; \	486	aio_req req; \
1401	int req_pri = next_pri; \	487	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \	488	next_pri = EIO_PRI_DEFAULT; \
1403	\	489	\
1404	if (SvOK (callback) && !SvROK (callback)) \	490	cb_cv = get_cb (callback); \
1405	croak ("callback must be undef or of reference type"); \
1406	\	491	\
1407	Newz (0, req, 1, aio_cb); \	492	Newz (0, req, 1, eio_req); \
1408	if (!req) \	493	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \	494	croak ("out of memory during eio_req allocation"); \
1410	\	495	\
1411	req->callback = newSVsv (callback); \	496	req->callback = SvREFCNT_inc (cb_cv); \
1412	req->pri = req_pri	497	req->pri = req_pri
1413		498
1414	#define REQ_SEND \	499	#define REQ_SEND \
		500	PUTBACK; \
1415	req_send (req); \	501	req_submit (req); \
		502	SPAGAIN; \
1416	\	503	\
1417	if (GIMME_V != G_VOID) \	504	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));	505	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1419		506
1420	MODULE = IO::AIO PACKAGE = IO::AIO	507	MODULE = IO::AIO PACKAGE = IO::AIO
1421		508
1422	PROTOTYPES: ENABLE	509	PROTOTYPES: ENABLE
1423		510
1424	BOOT:	511	BOOT:
1425	{	512	{
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	513	stash = gv_stashpv ("IO::AIO", 1);
1427		514
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	515	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	516	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	517	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	518	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	519	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433	#ifdef _WIN32	520	#ifndef _WIN32
1434	X_MUTEX_CHECK (wrklock);
1435	X_MUTEX_CHECK (reslock);
1436	X_MUTEX_CHECK (reqlock);
1437	X_MUTEX_CHECK (reqwait);
1438	X_MUTEX_CHECK (preadwritelock);
1439	X_MUTEX_CHECK (readdirlock);
1440
1441	X_COND_CHECK (reqwait);
1442	#else
1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	521	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445	#endif	522	#endif
1446		523
1447	create_respipe ();	524	create_respipe ();
1448		525
1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	526	if (eio_init (want_poll, done_poll) < 0)
		527	croak ("IO::AIO: unable to initialise eio library");
		528
		529	/* atfork child called in fifo order, so before eio's handler */
		530	X_THREAD_ATFORK (0, 0, atfork_child);
1450	}	531	}
1451		532
1452	void	533	void
1453	max_poll_reqs (int nreqs)	534	max_poll_reqs (int nreqs)
1454	PROTOTYPE: $	535	PROTOTYPE: $
1455	CODE:	536	CODE:
1456	max_poll_reqs = nreqs;	537	eio_set_max_poll_reqs (nreqs);
1457		538
1458	void	539	void
1459	max_poll_time (double nseconds)	540	max_poll_time (double nseconds)
1460	PROTOTYPE: $	541	PROTOTYPE: $
1461	CODE:	542	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	543	eio_set_max_poll_time (nseconds);
1463		544
1464	void	545	void
1465	min_parallel (int nthreads)	546	min_parallel (int nthreads)
1466	PROTOTYPE: $	547	PROTOTYPE: $
		548	CODE:
		549	eio_set_min_parallel (nthreads);
1467		550
1468	void	551	void
1469	max_parallel (int nthreads)	552	max_parallel (int nthreads)
1470	PROTOTYPE: $	553	PROTOTYPE: $
		554	CODE:
		555	eio_set_max_parallel (nthreads);
1471		556
1472	void	557	void
1473	max_idle (int nthreads)	558	max_idle (int nthreads)
1474	PROTOTYPE: $	559	PROTOTYPE: $
1475	CODE:	560	CODE:
1476	set_max_idle (nthreads);	561	eio_set_max_idle (nthreads);
1477		562
1478	int	563	void
1479	max_outstanding (int maxreqs)	564	max_outstanding (int maxreqs)
1480	PROTOTYPE: $	565	PROTOTYPE: $
1481	CODE:	566	CODE:
1482	RETVAL = max_outstanding;
1483	max_outstanding = maxreqs;	567	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		568
1487	void	569	void
1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	570	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1489	PROTOTYPE: $$$;$	571	PROTOTYPE: $$$;$
1490	PPCODE:	572	PPCODE:
1491	{	573	{
1492	dREQ;	574	dREQ;
1493		575
1494	req->type = REQ_OPEN;	576	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	577	req->sv1 = newSVsv (pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);	578	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	579	req->int1 = flags;
1498	req->mode = mode;	580	req->int2 = mode;
1499		581
1500	REQ_SEND;	582	REQ_SEND;
1501	}	583	}
1502		584
1503	void	585	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	586	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $;$	587	PROTOTYPE: $;$
1506	ALIAS:	588	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	589	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	590	aio_fdatasync = EIO_FDATASYNC
1510	PPCODE:	591	PPCODE:
1511	{	592	{
1512	dREQ;	593	dREQ;
1513		594
1514	req->type = ix;	595	req->type = ix;
…		…
1517		598
1518	REQ_SEND (req);	599	REQ_SEND (req);
1519	}	600	}
1520		601
1521	void	602	void
		603	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		604	PROTOTYPE: $;$
		605	PPCODE:
		606	{
		607	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		608	dREQ;
		609
		610	if (close_pipe < 0)
		611	{
		612	int pipefd [2];
		613
		614	if (pipe (pipefd) < 0
		615	|| close (pipefd [1]) < 0
		616	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		617	abort (); /*D*/
		618
		619	close_pipe = pipefd [0];
		620	}
		621
		622	req->type = EIO_DUP2;
		623	req->int1 = close_pipe;
		624	req->sv2 = newSVsv (fh);
		625	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		626
		627	REQ_SEND (req);
		628	}
		629
		630	void
1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	631	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1523	ALIAS:	632	ALIAS:
1524	aio_read = REQ_READ	633	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	634	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$	635	PROTOTYPE: $$$$$;$
1527	PPCODE:	636	PPCODE:
1528	{	637	{
1529	STRLEN svlen;	638	STRLEN svlen;
1530	char *svptr = SvPVbyte (data, svlen);	639	char *svptr = SvPVbyte (data, svlen);
…		…
1537	dataoffset += svlen;	646	dataoffset += svlen;
1538		647
1539	if (dataoffset < 0 || dataoffset > svlen)	648	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	649	croak ("dataoffset outside of data scalar");
1541		650
1542	if (ix == REQ_WRITE)	651	if (ix == EIO_WRITE)
1543	{	652	{
1544	/* write: check length and adjust. */	653	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	654	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	655	len = svlen - dataoffset;
1547	}	656	}
…		…
1557	{	666	{
1558	dREQ;	667	dREQ;
1559		668
1560	req->type = ix;	669	req->type = ix;
1561	req->sv1 = newSVsv (fh);	670	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	671	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1563	: IoOFP (sv_2io (fh)));	672	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	673	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	674	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	675	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	676	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	677	req->stroffset = dataoffset;
1569		678
1570	if (!SvREADONLY (data))	679	if (!SvREADONLY (data))
1571	{	680	{
1572	SvREADONLY_on (data);	681	SvREADONLY_on (data);
…		…
1583	PPCODE:	692	PPCODE:
1584	{	693	{
1585	SV *data;	694	SV *data;
1586	dREQ;	695	dREQ;
1587		696
1588	data = newSV (NAME_MAX);
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;	697	req->type = EIO_READLINK;
1592	req->sv1 = newSVsv (path);	698	req->sv1 = newSVsv (path);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);	699	req->ptr1 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596		700
1597	REQ_SEND;	701	REQ_SEND;
1598	}	702	}
1599		703
1600	void	704	void
…		…
1602	PROTOTYPE: $$$$;$	706	PROTOTYPE: $$$$;$
1603	PPCODE:	707	PPCODE:
1604	{	708	{
1605	dREQ;	709	dREQ;
1606		710
1607	req->type = REQ_SENDFILE;	711	req->type = EIO_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);	712	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	713	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1610	req->sv2 = newSVsv (in_fh);	714	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	715	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1612	req->offs = SvVAL64 (in_offset);	716	req->offs = SvVAL64 (in_offset);
…		…
1620	PROTOTYPE: $$$;$	724	PROTOTYPE: $$$;$
1621	PPCODE:	725	PPCODE:
1622	{	726	{
1623	dREQ;	727	dREQ;
1624		728
1625	req->type = REQ_READAHEAD;	729	req->type = EIO_READAHEAD;
1626	req->sv1 = newSVsv (fh);	730	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1628	req->offs = SvVAL64 (offset);	732	req->offs = SvVAL64 (offset);
1629	req->size = length;	733	req->size = length;
1630		734
…		…
1632	}	736	}
1633		737
1634	void	738	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	739	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636	ALIAS:	740	ALIAS:
1637	aio_stat = REQ_STAT	741	aio_stat = EIO_STAT
1638	aio_lstat = REQ_LSTAT	742	aio_lstat = EIO_LSTAT
1639	PPCODE:	743	PPCODE:
1640	{	744	{
1641	dREQ;	745	dREQ;
1642		746
1643	req->ptr2 = malloc (sizeof (Stat_t));
1644	if (!req->ptr2)
1645	{
1646	req_destroy (req);
1647	croak ("out of memory during aio_stat statdata allocation");
1648	}
1649
1650	req->flags |= FLAG_PTR2_FREE;
1651	req->sv1 = newSVsv (fh_or_path);	747	req->sv1 = newSVsv (fh_or_path);
1652		748
1653	if (SvPOK (fh_or_path))	749	if (SvPOK (req->sv1))
1654	{	750	{
1655	req->type = ix;	751	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);	752	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}	753	}
1658	else	754	else
1659	{	755	{
1660	req->type = REQ_FSTAT;	756	req->type = EIO_FSTAT;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	757	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1662	}	758	}
1663		759
1664	REQ_SEND;	760	REQ_SEND;
1665	}	761	}
…		…
1672		768
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	769	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	770	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	771	req->sv1 = newSVsv (fh_or_path);
1676		772
1677	if (SvPOK (fh_or_path))	773	if (SvPOK (req->sv1))
1678	{	774	{
1679	req->type = REQ_UTIME;	775	req->type = EIO_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);	776	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}	777	}
1682	else	778	else
1683	{	779	{
1684	req->type = REQ_FUTIME;	780	req->type = EIO_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	781	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}	782	}
1687		783
1688	REQ_SEND;	784	REQ_SEND;
1689	}	785	}
…		…
1695	dREQ;	791	dREQ;
1696		792
1697	req->sv1 = newSVsv (fh_or_path);	793	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	794	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		795
1700	if (SvPOK (fh_or_path))	796	if (SvPOK (req->sv1))
1701	{	797	{
1702	req->type = REQ_TRUNCATE;	798	req->type = EIO_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);	799	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}	800	}
1705	else	801	else
1706	{	802	{
1707	req->type = REQ_FTRUNCATE;	803	req->type = EIO_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	804	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}	805	}
1710		806
1711	REQ_SEND;	807	REQ_SEND;
1712	}	808	}
1713		809
1714	void	810	void
1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	811	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		812	ALIAS:
		813	aio_chmod = EIO_CHMOD
		814	aio_mkdir = EIO_MKDIR
1716	PPCODE:	815	PPCODE:
1717	{	816	{
1718	dREQ;	817	dREQ;
1719		818
1720	req->mode = mode;	819	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	820	req->sv1 = newSVsv (fh_or_path);
1722		821
1723	if (SvPOK (fh_or_path))	822	if (SvPOK (req->sv1))
1724	{	823	{
1725	req->type = REQ_CHMOD;	824	req->type = ix;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);	825	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}	826	}
1728	else	827	else
1729	{	828	{
1730	req->type = REQ_FCHMOD;	829	req->type = EIO_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	830	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}	831	}
1733		832
1734	REQ_SEND;	833	REQ_SEND;
1735	}	834	}
…		…
1742		841
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	842	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	843	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	844	req->sv1 = newSVsv (fh_or_path);
1746		845
1747	if (SvPOK (fh_or_path))	846	if (SvPOK (req->sv1))
1748	{	847	{
1749	req->type = REQ_CHOWN;	848	req->type = EIO_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);	849	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}	850	}
1752	else	851	else
1753	{	852	{
1754	req->type = REQ_FCHOWN;	853	req->type = EIO_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}	855	}
1757		856
1758	REQ_SEND;	857	REQ_SEND;
1759	}	858	}
1760		859
1761	void	860	void
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	861	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1763	ALIAS:	862	ALIAS:
1764	aio_unlink = REQ_UNLINK	863	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	864	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	865	aio_readdir = EIO_READDIR
1767	PPCODE:	866	PPCODE:
1768	{	867	{
1769	dREQ;	868	dREQ;
1770		869
1771	req->type = ix;	870	req->type = ix;
…		…
1774		873
1775	REQ_SEND;	874	REQ_SEND;
1776	}	875	}
1777		876
1778	void	877	void
1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	878	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		879	ALIAS:
		880	aio_link = EIO_LINK
		881	aio_symlink = EIO_SYMLINK
		882	aio_rename = EIO_RENAME
1780	PPCODE:	883	PPCODE:
1781	{	884	{
1782	dREQ;	885	dREQ;
1783		886
		887	req->type = ix;
		888	req->sv1 = newSVsv (oldpath);
		889	req->ptr1 = SvPVbyte_nolen (req->sv1);
		890	req->sv2 = newSVsv (newpath);
		891	req->ptr2 = SvPVbyte_nolen (req->sv2);
		892
		893	REQ_SEND;
		894	}
		895
		896	void
		897	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		898	PPCODE:
		899	{
		900	dREQ;
		901
1784	req->type = REQ_MKDIR;	902	req->type = EIO_MKNOD;
1785	req->sv1 = newSVsv (pathname);	903	req->sv1 = newSVsv (pathname);
1786	req->ptr1 = SvPVbyte_nolen (req->sv1);	904	req->ptr1 = SvPVbyte_nolen (req->sv1);
1787	req->mode = mode;
1788
1789	REQ_SEND;
1790	}
1791
1792	void
1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:
1795	aio_link = REQ_LINK
1796	aio_symlink = REQ_SYMLINK
1797	aio_rename = REQ_RENAME
1798	PPCODE:
1799	{
1800	dREQ;
1801
1802	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);
1805	req->sv1 = newSVsv (newpath);
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807
1808	REQ_SEND;
1809	}
1810
1811	void
1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1813	PPCODE:
1814	{
1815	dREQ;
1816
1817	req->type = REQ_MKNOD;
1818	req->sv1 = newSVsv (pathname);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);
1820	req->mode = (mode_t)mode;	905	req->int2 = (mode_t)mode;
1821	req->offs = dev;	906	req->offs = dev;
1822		907
1823	REQ_SEND;	908	REQ_SEND;
1824	}	909	}
1825		910
…		…
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	912	aio_busy (double delay, SV *callback=&PL_sv_undef)
1828	PPCODE:	913	PPCODE:
1829	{	914	{
1830	dREQ;	915	dREQ;
1831		916
1832	req->type = REQ_BUSY;	917	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	918	req->nv1 = delay < 0. ? 0. : delay;
1834		919
1835	REQ_SEND;	920	REQ_SEND;
1836	}	921	}
1837		922
…		…
1840	PROTOTYPE: ;$	925	PROTOTYPE: ;$
1841	PPCODE:	926	PPCODE:
1842	{	927	{
1843	dREQ;	928	dREQ;
1844		929
1845	req->type = REQ_GROUP;	930	req->type = EIO_GROUP;
1846		931
1847	req_send (req);	932	req_submit (req);
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	933	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1849	}	934	}
1850		935
1851	void	936	void
1852	aio_nop (SV *callback=&PL_sv_undef)	937	aio_nop (SV *callback=&PL_sv_undef)
		938	ALIAS:
		939	aio_nop = EIO_NOP
		940	aio_sync = EIO_SYNC
1853	PPCODE:	941	PPCODE:
1854	{	942	{
1855	dREQ;	943	dREQ;
1856		944
1857	req->type = REQ_NOP;	945	req->type = ix;
1858		946
1859	REQ_SEND;	947	REQ_SEND;
1860	}	948	}
1861		949
1862	int	950	int
1863	aioreq_pri (int pri = 0)	951	aioreq_pri (int pri = 0)
1864	PROTOTYPE: ;$	952	PROTOTYPE: ;$
1865	CODE:	953	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	954	RETVAL = next_pri;
1867	if (items > 0)	955	if (items > 0)
1868	{	956	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	957	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	958	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	959	next_pri = pri;
1872	}	960	}
1873	OUTPUT:	961	OUTPUT:
1874	RETVAL	962	RETVAL
1875		963
1876	void	964	void
1877	aioreq_nice (int nice = 0)	965	aioreq_nice (int nice = 0)
1878	CODE:	966	CODE:
1879	nice = next_pri - nice;	967	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	968	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	969	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	970	next_pri = nice;
1883		971
1884	void	972	void
1885	flush ()	973	flush ()
1886	PROTOTYPE:	974	PROTOTYPE:
1887	CODE:	975	CODE:
1888	while (nreqs)	976	while (eio_nreqs ())
1889	{	977	{
1890	poll_wait ();	978	poll_wait ();
1891	poll_cb ();	979	poll_cb ();
1892	}	980	}
1893		981
…		…
1920	poll_wait()	1008	poll_wait()
1921	PROTOTYPE:	1009	PROTOTYPE:
1922	CODE:	1010	CODE:
1923	poll_wait ();	1011	poll_wait ();
1924		1012
1925	void
1926	setsig (int signum = SIGIO)
1927	PROTOTYPE: ;$
1928	CODE:
1929	{
1930	if (block_sig_level)
1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933	X_LOCK (reslock);
1934	main_tid = pthread_self ();
1935	main_sig = signum;
1936	X_UNLOCK (reslock);
1937
1938	if (main_sig && npending)
1939	pthread_kill (main_tid, main_sig);
1940	}
1941
1942	void
1943	aio_block (SV *cb)
1944	PROTOTYPE: &
1945	PPCODE:
1946	{
1947	int count;
1948
1949	block_sig ();
1950	PUSHMARK (SP);
1951	PUTBACK;
1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953	SPAGAIN;
1954	unblock_sig ();
1955
1956	if (SvTRUE (ERRSV))
1957	croak (0);
1958
1959	XSRETURN (count);
1960	}
1961
1962	int	1013	int
1963	nreqs()	1014	nreqs()
1964	PROTOTYPE:	1015	PROTOTYPE:
1965	CODE:	1016	CODE:
1966	RETVAL = nreqs;	1017	RETVAL = eio_nreqs ();
1967	OUTPUT:	1018	OUTPUT:
1968	RETVAL	1019	RETVAL
1969		1020
1970	int	1021	int
1971	nready()	1022	nready()
1972	PROTOTYPE:	1023	PROTOTYPE:
1973	CODE:	1024	CODE:
1974	RETVAL = get_nready ();	1025	RETVAL = eio_nready ();
1975	OUTPUT:	1026	OUTPUT:
1976	RETVAL	1027	RETVAL
1977		1028
1978	int	1029	int
1979	npending()	1030	npending()
1980	PROTOTYPE:	1031	PROTOTYPE:
1981	CODE:	1032	CODE:
1982	RETVAL = get_npending ();	1033	RETVAL = eio_npending ();
1983	OUTPUT:	1034	OUTPUT:
1984	RETVAL	1035	RETVAL
1985		1036
1986	int	1037	int
1987	nthreads()	1038	nthreads()
1988	PROTOTYPE:	1039	PROTOTYPE:
1989	CODE:	1040	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1041	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	1042	OUTPUT:
1994	RETVAL	1043	RETVAL
1995		1044
		1045	void _on_next_submit (SV *cb)
		1046	CODE:
		1047	SvREFCNT_dec (on_next_submit);
		1048	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1049
1996	PROTOTYPES: DISABLE	1050	PROTOTYPES: DISABLE
1997		1051
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1052	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		1053
2000	void	1054	void
2001	cancel (aio_req_ornot req)	1055	cancel (aio_req_ornot req)
2002	CODE:	1056	CODE:
2003	req_cancel (req);	1057	eio_cancel (req);
2004		1058
2005	void	1059	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1060	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2007	CODE:	1061	PPCODE:
		1062	{
		1063	if (GIMME_V != G_VOID)
		1064	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1065
		1066	if (items > 1)
		1067	{
		1068	SV *cb_cv = get_cb (callback);
		1069
2008	SvREFCNT_dec (req->callback);	1070	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	1071	req->callback = SvREFCNT_inc (cb_cv);
		1072	}
		1073	}
2010		1074
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1075	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		1076
2013	void	1077	void
2014	add (aio_req grp, ...)	1078	add (aio_req grp, ...)
2015	PPCODE:	1079	PPCODE:
2016	{	1080	{
2017	int i;	1081	int i;
2018	aio_req req;
2019
2020	if (main_sig && !block_sig_level)
2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022		1082
2023	if (grp->int1 == 2)	1083	if (grp->int1 == 2)
2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1084	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025		1085
2026	for (i = 1; i < items; ++i )	1086	for (i = 1; i < items; ++i )
2027	{	1087	{
		1088	aio_req req;
		1089
2028	if (GIMME_V != G_VOID)	1090	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1091	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		1092
2031	req = SvAIO_REQ (ST (i));	1093	req = SvAIO_REQ (ST (i));
2032		1094
2033	if (req)	1095	if (req)
2034	{	1096	eio_grp_add (grp, req);
2035	++grp->size;
2036	req->grp = grp;
2037
2038	req->grp_prev = 0;
2039	req->grp_next = grp->grp_first;
2040
2041	if (grp->grp_first)
2042	grp->grp_first->grp_prev = req;
2043
2044	grp->grp_first = req;
2045	}
2046	}	1097	}
2047	}	1098	}
2048		1099
2049	void	1100	void
2050	cancel_subs (aio_req_ornot req)	1101	cancel_subs (aio_req_ornot req)
…		…
2075	grp->errorno = errorno;	1126	grp->errorno = errorno;
2076		1127
2077	void	1128	void
2078	limit (aio_req grp, int limit)	1129	limit (aio_req grp, int limit)
2079	CODE:	1130	CODE:
2080	grp->int2 = limit;	1131	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		1132
2083	void	1133	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	1134	feed (aio_req grp, SV *callback=&PL_sv_undef)
2085	CODE:	1135	CODE:
2086	{	1136	{
…		…
2088	grp->sv2 = newSVsv (callback);	1138	grp->sv2 = newSVsv (callback);
2089		1139
2090	if (grp->int2 <= 0)	1140	if (grp->int2 <= 0)
2091	grp->int2 = 2;	1141	grp->int2 = 2;
2092		1142
2093	aio_grp_feed (grp);	1143	eio_grp_limit (grp, grp->int2);
2094	}	1144	}
2095		1145

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