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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.123 by root, Sat May 17 12:17:25 2008 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"
10
11	#include <stddef.h>	9	#include <stddef.h>
12	#include <stdlib.h>	10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
		17
		18	/* perl namespace pollution */
		19	#undef VERSION
		20
		21	#ifdef _WIN32
		22
		23	# define EIO_STRUCT_DIRENT Direntry_t
		24	# undef malloc
		25	# undef free
		26
		27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
		59	#else
		60
		61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
23	#include <utime.h>	64	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	65	# include <signal.h>
31	# elif __hpux	66	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	67
33	# elif __solaris /* not yet */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif
38	#endif	68	#endif
39		69
40	/* number of seconds after which idle threads exit */	70	#define EIO_STRUCT_STAT Stat_t
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		71
51	/* use NV for 32 bit perls as it allows larger offsets */	72	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	73	#if IVSIZE >= 8
53	# define SvVAL64 SvIV	74	# define SvVAL64 SvIV
54	#else	75	#else
55	# define SvVAL64 SvNV	76	# define SvVAL64 SvNV
56	#endif	77	#endif
57		78
58	#define dBUF \	79	static HV *stash;
59	char *aio_buf; \
60	LOCK (wrklock); \
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
62	UNLOCK (wrklock); \
63	if (!aio_buf) \
64	return -1;
65
66	typedef SV SV8; /* byte-sv, used for argument-checking */	80	typedef SV SV8; /* byte-sv, used for argument-checking */
67
68	enum {
69	REQ_QUIT,
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		81
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		84
88	typedef struct aio_cb	85	#define EIO_REQ_MEMBERS \
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;	86	SV *callback; \
93	SV *sv1, *sv2;	87	SV *sv1, *sv2; \
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;	88	STRLEN stroffset; \
101	int type;	89	SV *self;
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		90
106	unsigned char flags;	91	#define EIO_NO_WRAPPERS 1
107	unsigned char pri;
108		92
109	SV *self; /* the perl counterpart of this request, if any */	93	#include "libeio/eio.h"
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94
111	} aio_cb;	95	static int req_invoke (eio_req *req);
		96	#define EIO_FINISH(req) req_invoke (req)
		97	static void aio_grp_feed (eio_req *grp);
		98	#define EIO_FEED(req) aio_grp_feed (req)
		99	static void req_destroy (eio_req *grp);
		100	#define EIO_DESTROY(req) req_destroy (req)
112		101
113	enum {	102	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	103	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};	104	};
118		105
		106	#include "libeio/eio.c"
		107
119	typedef aio_cb *aio_req;	108	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	109	typedef eio_req *aio_req_ornot;
121		110
122	enum {	111	static SV *on_next_submit;
123	PRI_MIN = -4,	112	static int next_pri = EIO_PRI_DEFAULT;
124	PRI_MAX = 4,	113	static int max_outstanding;
125		114
126	DEFAULT_PRI = 0,	115	static int respipe_osf [2], respipe [2] = { -1, -1 };
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130		116
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	117	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	118	static void req_cancel (aio_req req);
		119
		120	static void want_poll (void)
		121	{
		122	/* write a dummy byte to the pipe so fh becomes ready */
		123	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		124	}
		125
		126	static void done_poll (void)
		127	{
		128	/* read any signals sent by the worker threads */
		129	char buf [4];
		130	while (respipe_read (respipe [0], buf, 4) == 4)
		131	;
		132	}
331		133
332	/* must be called at most once */	134	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	135	static SV *req_sv (aio_req req, const char *klass)
334	{	136	{
335	if (!req->self)	137	if (!req->self)
…		…
353	return mg ? (aio_req)mg->mg_ptr : 0;	155	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	156	}
355		157
356	static void aio_grp_feed (aio_req grp)	158	static void aio_grp_feed (aio_req grp)
357	{	159	{
358	block_sig ();	160	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	161	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	162	dSP;
367		163
368	ENTER;	164	ENTER;
369	SAVETMPS;	165	SAVETMPS;
370	PUSHMARK (SP);	166	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	167	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
372	PUTBACK;	168	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	169	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	170	SPAGAIN;
375	FREETMPS;	171	FREETMPS;
376	LEAVE;	172	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	173	}
387
388	unblock_sig ();
389	}	174	}
390		175
391	static void aio_grp_dec (aio_req grp)	176	static void req_submit (eio_req *req)
392	{	177	{
393	--grp->size;	178	eio_submit (req);
394		179
395	/* call feeder, if applicable */	180	if (on_next_submit)
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	181	{
401	block_sig ();	182	dSP;
		183	SV *cb = sv_2mortal (on_next_submit);
402		184
403	if (!req_invoke (grp))	185	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		186
410	req_destroy (grp);	187	PUSHMARK (SP);
411	unblock_sig ();	188	PUTBACK;
		189	call_sv (cb, G_DISCARD | G_EVAL);
412	}	190	}
413	}	191	}
414		192
415	static int req_invoke (aio_req req)	193	static int req_invoke (eio_req *req)
416	{	194	{
417	dSP;	195	dSP;
418		196
419	if (req->flags & FLAG_SV2_RO_OFF)	197	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	198	SvREADONLY_off (req->sv2);
421		199
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	200	if (!EIO_CANCELLED (req) && SvOK (req->callback))
423	{	201	{
424	ENTER;	202	ENTER;
425	SAVETMPS;	203	SAVETMPS;
426	PUSHMARK (SP);	204	PUSHMARK (SP);
427	EXTEND (SP, 1);	205	EXTEND (SP, 1);
428		206
429	switch (req->type)	207	switch (req->type)
430	{	208	{
431	case REQ_READDIR:	209	case EIO_READDIR:
432	{	210	{
433	SV *rv = &PL_sv_undef;	211	SV *rv = &PL_sv_undef;
434		212
435	if (req->result >= 0)	213	if (req->result >= 0)
436	{	214	{
…		…
453		231
454	PUSHs (rv);	232	PUSHs (rv);
455	}	233	}
456	break;	234	break;
457		235
458	case REQ_OPEN:	236	case EIO_OPEN:
459	{	237	{
460	/* convert fd to fh */	238	/* convert fd to fh */
461	SV *fh;	239	SV *fh = &PL_sv_undef;
462		240
463	PUSHs (sv_2mortal (newSViv (req->result)));	241	if (req->result >= 0)
464	PUTBACK;	242	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	243	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	244	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		245	char sym [64];
		246	int symlen;
		247
		248	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		249	gv_init (gv, stash, sym, symlen, 0);
467		250
468	fh = POPs;	251	symlen = snprintf (
469	PUSHMARK (SP);	252	sym,
		253	sizeof (sym),
		254	"%s&=%d",
		255	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		256	req->result
		257	);
		258
		259	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		260	fh = (SV *)gv;
		261	}
		262
470	XPUSHs (fh);	263	PUSHs (fh);
471	}	264	}
472	break;	265	break;
473		266
474	case REQ_GROUP:	267	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	268	req->int1 = 2; /* mark group as finished */
476		269
477	if (req->sv1)	270	if (req->sv1)
478	{	271	{
479	int i;	272	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	276	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	277	PUSHs (*av_fetch (av, i, 0));
485	}	278	}
486	break;	279	break;
487		280
488	case REQ_NOP:	281	case EIO_NOP:
489	case REQ_BUSY:	282	case EIO_BUSY:
490	break;	283	break;
491		284
492	case REQ_READLINK:	285	case EIO_READLINK:
493	if (req->result > 0)	286	if (req->result > 0)
494	{	287	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
495	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);
498	}
499	break;	288	break;
500		289
501	case REQ_STAT:	290	case EIO_STAT:
502	case REQ_LSTAT:	291	case EIO_LSTAT:
503	case REQ_FSTAT:	292	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	293	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	294	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	295	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	296	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;	297	break;
509		298
510	case REQ_READ:	299	case EIO_READ:
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	300	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	301	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));	302	PUSHs (sv_2mortal (newSViv (req->result)));
514	break;	303	break;
515		304
		305	case EIO_DUP2:
		306	if (req->result > 0)
		307	req->result = 0;
		308	/* FALLTHROUGH */
		309
516	default:	310	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	311	PUSHs (sv_2mortal (newSViv (req->result)));
518	break;	312	break;
519	}	313	}
520		314
521	errno = req->errorno;	315	errno = req->errorno;
522		316
523	PUTBACK;	317	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	318	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	319	SPAGAIN;
526		320
527	FREETMPS;	321	FREETMPS;
528	LEAVE;	322	LEAVE;
		323
		324	PUTBACK;
529	}	325	}
530		326
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	327	return !!SvTRUE (ERRSV);
546	}	328	}
547		329
548	static void req_destroy (aio_req req)	330	static void req_destroy (aio_req req)
549	{	331	{
550	if (req->self)	332	if (req->self)
…		…
555		337
556	SvREFCNT_dec (req->sv1);	338	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	339	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	340	SvREFCNT_dec (req->callback);
559		341
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	342	Safefree (req);
564	}	343	}
565		344
566	static void req_cancel_subs (aio_req grp)	345	static void req_cancel_subs (aio_req grp)
567	{	346	{
568	aio_req sub;	347	aio_req sub;
569		348
570	if (grp->type != REQ_GROUP)	349	if (grp->type != EIO_GROUP)
571	return;	350	return;
572		351
573	SvREFCNT_dec (grp->sv2);	352	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	353	grp->sv2 = 0;
575		354
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	355	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	356	}
579		357
580	static void req_cancel (aio_req req)	358	#ifdef USE_SOCKETS_AS_HANDLES
581	{	359	# define TO_SOCKET(x) (win32_get_osfhandle (x))
582	req->flags |= FLAG_CANCELLED;	360	#else
		361	# define TO_SOCKET(x) (x)
		362	#endif
583		363
584	req_cancel_subs (req);	364	static void
585	}	365	create_respipe (void)
586
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{	366	{
591	worker *wrk = calloc (1, sizeof (worker));	367	int old_readfd = respipe [0];
592		368
593	if (!wrk)	369	if (respipe [1] >= 0)
594	croak ("unable to allocate worker thread data");	370	respipe_close (TO_SOCKET (respipe [1]));
595		371
596	LOCK (wrklock);	372	#ifdef _WIN32
		373	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		374	#else
		375	if (pipe (respipe))
		376	#endif
		377	croak ("unable to initialize result pipe");
597		378
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	379	if (old_readfd >= 0)
599	{	380	{
600	wrk->prev = &wrk_first;	381	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
601	wrk->next = wrk_first.next;	382	croak ("unable to initialize result pipe(2)");
602	wrk_first.next->prev = wrk;	383
603	wrk_first.next = wrk;	384	respipe_close (respipe [0]);
604	++started;	385	respipe [0] = old_readfd;
605	}	386	}
606	else
607	free (wrk);
608		387
609	UNLOCK (wrklock);	388	#ifdef _WIN32
610	}	389	int arg = 1;
		390	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		391	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		392	#else
		393	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		394	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		395	#endif
		396	croak ("unable to initialize result pipe(3)");
611		397
612	static void maybe_start_thread ()	398	respipe_osf [0] = TO_SOCKET (respipe [0]);
613	{	399	respipe_osf [1] = TO_SOCKET (respipe [1]);
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}	400	}
623		401
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	402	static void poll_wait (void)
683	{	403	{
684	fd_set rfd;	404	fd_set rfd;
685		405
686	while (nreqs)	406	while (eio_nreqs ())
687	{	407	{
688	int size;	408	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	409
		410	X_LOCK (reslock);
690	size = res_queue.size;	411	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	412	X_UNLOCK (reslock);
692		413
693	if (size)	414	if (size)
694	return;	415	return;
695		416
696	maybe_start_thread ();	417	etp_maybe_start_thread ();
697		418
698	FD_ZERO(&rfd);	419	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	420	FD_SET (respipe [0], &rfd);
700		421
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	422	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	423	}
703	}	424	}
704		425
705	static int poll_cb ()	426	static int poll_cb (void)
706	{	427	{
707	dSP;	428	int res;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713		429
714	if (max_poll_time)	430	do
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)
720	{	431	{
721	for (;;)	432	res = eio_poll ();
722	{
723	maybe_start_thread ();
724		433
725	LOCK (reslock);	434	if (res > 0)
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);	435	croak (0);
760	}
761
762	count++;
763	}
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781
782	poll_wait ();
783
784	++maxreqs;
785	}	436	}
786		437	while (max_outstanding && max_outstanding <= eio_nreqs ());
787	unblock_sig ();
788	return count;
789	}
790
791	static void create_pipe ()
792	{
793	if (pipe (respipe))
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}
802
803	/*****************************************************************************/
804	/* work around various missing functions */
805
806	#if !HAVE_PREADWRITE
807	# define pread aio_pread
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{
819	ssize_t res;
820	off_t ooffset;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828		438
829	return res;	439	return res;
830	}	440	}
831		441
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085
1086	/*****************************************************************************/
1087
1088	static void *aio_proc (void *thr_arg)
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)	442	static void atfork_child (void)
1282	{	443	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();	444	create_respipe ();
1311
1312	atfork_parent ();
1313	}	445	}
1314		446
1315	#define dREQ \	447	#define dREQ \
1316	aio_req req; \	448	aio_req req; \
1317	int req_pri = next_pri; \	449	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	450	next_pri = EIO_PRI_DEFAULT; \
1319	\	451	\
1320	if (SvOK (callback) && !SvROK (callback)) \	452	if (SvOK (callback) && !SvROK (callback)) \
1321	croak ("callback must be undef or of reference type"); \	453	croak ("callback must be undef or of reference type"); \
1322	\	454	\
1323	Newz (0, req, 1, aio_cb); \	455	Newz (0, req, 1, eio_req); \
1324	if (!req) \	456	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	457	croak ("out of memory during eio_req allocation"); \
1326	\	458	\
1327	req->callback = newSVsv (callback); \	459	req->callback = newSVsv (callback); \
1328	req->pri = req_pri	460	req->pri = req_pri
1329		461
1330	#define REQ_SEND \	462	#define REQ_SEND \
1331	req_send (req); \	463	req_submit (req); \
1332	\	464	\
1333	if (GIMME_V != G_VOID) \	465	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	466	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335		467
1336	MODULE = IO::AIO PACKAGE = IO::AIO	468	MODULE = IO::AIO PACKAGE = IO::AIO
1337		469
1338	PROTOTYPES: ENABLE	470	PROTOTYPES: ENABLE
1339		471
1340	BOOT:	472	BOOT:
1341	{	473	{
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	474	stash = gv_stashpv ("IO::AIO", 1);
1343		475
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	476	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	477	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	478	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	479	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	480	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		481	#ifndef _WIN32
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	482	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));	483	#endif
1351		484
1352	create_pipe ();	485	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	486
		487	if (eio_init (want_poll, done_poll) < 0)
		488	croak ("IO::AIO: unable to initialise eio library");
		489
		490	/* atfork child called in fifo order, so before eio's handler */
		491	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	492	}
1355		493
1356	void	494	void
1357	max_poll_reqs (int nreqs)	495	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	496	PROTOTYPE: $
1359	CODE:	497	CODE:
1360	max_poll_reqs = nreqs;	498	eio_set_max_poll_reqs (nreqs);
1361		499
1362	void	500	void
1363	max_poll_time (double nseconds)	501	max_poll_time (double nseconds)
1364	PROTOTYPE: $	502	PROTOTYPE: $
1365	CODE:	503	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	504	eio_set_max_poll_time (nseconds);
1367		505
1368	void	506	void
1369	min_parallel (int nthreads)	507	min_parallel (int nthreads)
1370	PROTOTYPE: $	508	PROTOTYPE: $
		509	CODE:
		510	eio_set_min_parallel (nthreads);
1371		511
1372	void	512	void
1373	max_parallel (int nthreads)	513	max_parallel (int nthreads)
1374	PROTOTYPE: $	514	PROTOTYPE: $
		515	CODE:
		516	eio_set_max_parallel (nthreads);
1375		517
1376	void	518	void
1377	max_idle (int nthreads)	519	max_idle (int nthreads)
1378	PROTOTYPE: $	520	PROTOTYPE: $
1379	CODE:	521	CODE:
1380	set_max_idle (nthreads);	522	eio_set_max_idle (nthreads);
1381		523
1382	int	524	void
1383	max_outstanding (int maxreqs)	525	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	526	PROTOTYPE: $
1385	CODE:	527	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	528	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		529
1391	void	530	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	531	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	532	PROTOTYPE: $$$;$
1394	PPCODE:	533	PPCODE:
1395	{	534	{
1396	dREQ;	535	dREQ;
1397		536
1398	req->type = REQ_OPEN;	537	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	538	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	539	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	540	req->int1 = flags;
1402	req->mode = mode;	541	req->int2 = mode;
1403		542
1404	REQ_SEND;	543	REQ_SEND;
1405	}	544	}
1406		545
1407	void	546	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	547	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	548	PROTOTYPE: $;$
1410	ALIAS:	549	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC	550	aio_fsync = EIO_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = EIO_FDATASYNC
1414	PPCODE:	552	PPCODE:
1415	{	553	{
1416	dREQ;	554	dREQ;
1417		555
1418	req->type = ix;	556	req->type = ix;
…		…
1421		559
1422	REQ_SEND (req);	560	REQ_SEND (req);
1423	}	561	}
1424		562
1425	void	563	void
		564	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		565	PROTOTYPE: $;$
		566	PPCODE:
		567	{
		568	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		569	dREQ;
		570
		571	if (close_pipe < 0)
		572	{
		573	int pipefd [2];
		574
		575	if (pipe (pipefd) < 0
		576	|| close (pipefd [1]) < 0
		577	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		578	abort (); /*D*/
		579
		580	close_pipe = pipefd [0];
		581	}
		582
		583	req->type = EIO_DUP2;
		584	req->int1 = close_pipe;
		585	req->sv2 = newSVsv (fh);
		586	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		587
		588	REQ_SEND (req);
		589	}
		590
		591	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	592	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:	593	ALIAS:
1428	aio_read = REQ_READ	594	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	595	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	596	PROTOTYPE: $$$$$;$
1431	PPCODE:	597	PPCODE:
1432	{	598	{
1433	STRLEN svlen;	599	STRLEN svlen;
1434	char *svptr = SvPVbyte (data, svlen);	600	char *svptr = SvPVbyte (data, svlen);
…		…
1441	dataoffset += svlen;	607	dataoffset += svlen;
1442		608
1443	if (dataoffset < 0 || dataoffset > svlen)	609	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	610	croak ("dataoffset outside of data scalar");
1445		611
1446	if (ix == REQ_WRITE)	612	if (ix == EIO_WRITE)
1447	{	613	{
1448	/* write: check length and adjust. */	614	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	615	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	616	len = svlen - dataoffset;
1451	}	617	}
…		…
1461	{	627	{
1462	dREQ;	628	dREQ;
1463		629
1464	req->type = ix;	630	req->type = ix;
1465	req->sv1 = newSVsv (fh);	631	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	632	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1467	: IoOFP (sv_2io (fh)));	633	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	634	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	635	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	636	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	637	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	638	req->stroffset = dataoffset;
1473		639
1474	if (!SvREADONLY (data))	640	if (!SvREADONLY (data))
1475	{	641	{
1476	SvREADONLY_on (data);	642	SvREADONLY_on (data);
…		…
1487	PPCODE:	653	PPCODE:
1488	{	654	{
1489	SV *data;	655	SV *data;
1490	dREQ;	656	dREQ;
1491		657
1492	data = newSV (NAME_MAX);
1493	SvPOK_on (data);
1494
1495	req->type = REQ_READLINK;	658	req->type = EIO_READLINK;
1496	req->sv1 = newSVsv (path);	659	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);	660	req->ptr1 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);
1500		661
1501	REQ_SEND;	662	REQ_SEND;
1502	}	663	}
1503		664
1504	void	665	void
…		…
1506	PROTOTYPE: $$$$;$	667	PROTOTYPE: $$$$;$
1507	PPCODE:	668	PPCODE:
1508	{	669	{
1509	dREQ;	670	dREQ;
1510		671
1511	req->type = REQ_SENDFILE;	672	req->type = EIO_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);	673	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1514	req->sv2 = newSVsv (in_fh);	675	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	676	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1516	req->offs = SvVAL64 (in_offset);	677	req->offs = SvVAL64 (in_offset);
…		…
1524	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1525	PPCODE:	686	PPCODE:
1526	{	687	{
1527	dREQ;	688	dREQ;
1528		689
1529	req->type = REQ_READAHEAD;	690	req->type = EIO_READAHEAD;
1530	req->sv1 = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1532	req->offs = SvVAL64 (offset);	693	req->offs = SvVAL64 (offset);
1533	req->size = length;	694	req->size = length;
1534		695
…		…
1536	}	697	}
1537		698
1538	void	699	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	700	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:	701	ALIAS:
1541	aio_stat = REQ_STAT	702	aio_stat = EIO_STAT
1542	aio_lstat = REQ_LSTAT	703	aio_lstat = EIO_LSTAT
1543	PPCODE:	704	PPCODE:
1544	{	705	{
1545	dREQ;	706	dREQ;
1546		707
1547	req->ptr2 = malloc (sizeof (Stat_t));
1548	if (!req->ptr2)
1549	{
1550	req_destroy (req);
1551	croak ("out of memory during aio_stat statdata allocation");
1552	}
1553
1554	req->flags |= FLAG_PTR2_FREE;
1555	req->sv1 = newSVsv (fh_or_path);	708	req->sv1 = newSVsv (fh_or_path);
1556		709
1557	if (SvPOK (fh_or_path))	710	if (SvPOK (req->sv1))
1558	{	711	{
1559	req->type = ix;	712	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);	713	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	714	}
1562	else	715	else
1563	{	716	{
1564	req->type = REQ_FSTAT;	717	req->type = EIO_FSTAT;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	718	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1566	}	719	}
1567		720
1568	REQ_SEND;	721	REQ_SEND;
1569	}	722	}
…		…
1576		729
1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	730	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	731	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	732	req->sv1 = newSVsv (fh_or_path);
1580		733
1581	if (SvPOK (fh_or_path))	734	if (SvPOK (req->sv1))
1582	{	735	{
1583	req->type = REQ_UTIME;	736	req->type = EIO_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}	738	}
1586	else	739	else
1587	{	740	{
1588	req->type = REQ_FUTIME;	741	req->type = EIO_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}	743	}
1591		744
1592	REQ_SEND;	745	REQ_SEND;
1593	}	746	}
1594		747
1595	void	748	void
		749	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		750	PPCODE:
		751	{
		752	dREQ;
		753
		754	req->sv1 = newSVsv (fh_or_path);
		755	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		756
		757	if (SvPOK (req->sv1))
		758	{
		759	req->type = EIO_TRUNCATE;
		760	req->ptr1 = SvPVbyte_nolen (req->sv1);
		761	}
		762	else
		763	{
		764	req->type = EIO_FTRUNCATE;
		765	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		766	}
		767
		768	REQ_SEND;
		769	}
		770
		771	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	772	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		773	ALIAS:
		774	aio_chmod = EIO_CHMOD
		775	aio_mkdir = EIO_MKDIR
1597	PPCODE:	776	PPCODE:
1598	{	777	{
1599	dREQ;	778	dREQ;
1600		779
1601	req->mode = mode;	780	req->int2 = mode;
1602	req->sv1 = newSVsv (fh_or_path);	781	req->sv1 = newSVsv (fh_or_path);
1603		782
1604	if (SvPOK (fh_or_path))	783	if (SvPOK (req->sv1))
1605	{	784	{
1606	req->type = REQ_CHMOD;	785	req->type = ix;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);	786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}	787	}
1609	else	788	else
1610	{	789	{
1611	req->type = REQ_FCHMOD;	790	req->type = EIO_FCHMOD;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	791	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}	792	}
1614		793
1615	REQ_SEND;	794	REQ_SEND;
1616	}	795	}
…		…
1623		802
1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	805	req->sv1 = newSVsv (fh_or_path);
1627		806
1628	if (SvPOK (fh_or_path))	807	if (SvPOK (req->sv1))
1629	{	808	{
1630	req->type = REQ_CHOWN;	809	req->type = EIO_CHOWN;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);	810	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}	811	}
1633	else	812	else
1634	{	813	{
1635	req->type = REQ_FCHOWN;	814	req->type = EIO_FCHOWN;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}	816	}
1638		817
1639	REQ_SEND;	818	REQ_SEND;
1640	}	819	}
1641		820
1642	void	821	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1644	ALIAS:	823	ALIAS:
1645	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1648	PPCODE:	827	PPCODE:
1649	{	828	{
1650	dREQ;	829	dREQ;
1651		830
1652	req->type = ix;	831	req->type = ix;
…		…
1655		834
1656	REQ_SEND;	835	REQ_SEND;
1657	}	836	}
1658		837
1659	void	838	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_link = EIO_LINK
		842	aio_symlink = EIO_SYMLINK
		843	aio_rename = EIO_RENAME
1661	PPCODE:	844	PPCODE:
1662	{	845	{
1663	dREQ;	846	dREQ;
1664		847
		848	req->type = ix;
		849	req->sv1 = newSVsv (oldpath);
		850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
		853
		854	REQ_SEND;
		855	}
		856
		857	void
		858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
1665	req->type = REQ_MKDIR;	863	req->type = EIO_MKNOD;
1666	req->sv1 = newSVsv (pathname);	864	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_link = REQ_LINK
1677	aio_symlink = REQ_SYMLINK
1678	aio_rename = REQ_RENAME
1679	PPCODE:
1680	{
1681	dREQ;
1682
1683	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1686	req->sv1 = newSVsv (newpath);
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688
1689	REQ_SEND;
1690	}
1691
1692	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1694	PPCODE:
1695	{
1696	dREQ;
1697
1698	req->type = REQ_MKNOD;
1699	req->sv1 = newSVsv (pathname);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
1701	req->mode = (mode_t)mode;	866	req->int2 = (mode_t)mode;
1702	req->offs = dev;	867	req->offs = dev;
1703		868
1704	REQ_SEND;	869	REQ_SEND;
1705	}	870	}
1706		871
…		…
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1709	PPCODE:	874	PPCODE:
1710	{	875	{
1711	dREQ;	876	dREQ;
1712		877
1713	req->type = REQ_BUSY;	878	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1715		880
1716	REQ_SEND;	881	REQ_SEND;
1717	}	882	}
1718		883
…		…
1721	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1722	PPCODE:	887	PPCODE:
1723	{	888	{
1724	dREQ;	889	dREQ;
1725		890
1726	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
1727		892
1728	req_send (req);	893	eio_submit (req);
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1730	}	895	}
1731		896
1732	void	897	void
1733	aio_nop (SV *callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
		899	ALIAS:
		900	aio_nop = EIO_NOP
		901	aio_sync = EIO_SYNC
1734	PPCODE:	902	PPCODE:
1735	{	903	{
1736	dREQ;	904	dREQ;
1737		905
1738	req->type = REQ_NOP;	906	req->type = ix;
1739		907
1740	REQ_SEND;	908	REQ_SEND;
1741	}	909	}
1742		910
1743	int	911	int
1744	aioreq_pri (int pri = 0)	912	aioreq_pri (int pri = 0)
1745	PROTOTYPE: ;$	913	PROTOTYPE: ;$
1746	CODE:	914	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	915	RETVAL = next_pri;
1748	if (items > 0)	916	if (items > 0)
1749	{	917	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	920	next_pri = pri;
1753	}	921	}
1754	OUTPUT:	922	OUTPUT:
1755	RETVAL	923	RETVAL
1756		924
1757	void	925	void
1758	aioreq_nice (int nice = 0)	926	aioreq_nice (int nice = 0)
1759	CODE:	927	CODE:
1760	nice = next_pri - nice;	928	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	931	next_pri = nice;
1764		932
1765	void	933	void
1766	flush ()	934	flush ()
1767	PROTOTYPE:	935	PROTOTYPE:
1768	CODE:	936	CODE:
1769	while (nreqs)	937	while (eio_nreqs ())
1770	{	938	{
1771	poll_wait ();	939	poll_wait ();
1772	poll_cb ();	940	poll_cb ();
1773	}	941	}
1774		942
…		…
1801	poll_wait()	969	poll_wait()
1802	PROTOTYPE:	970	PROTOTYPE:
1803	CODE:	971	CODE:
1804	poll_wait ();	972	poll_wait ();
1805		973
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	974	int
1844	nreqs()	975	nreqs()
1845	PROTOTYPE:	976	PROTOTYPE:
1846	CODE:	977	CODE:
1847	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1848	OUTPUT:	979	OUTPUT:
1849	RETVAL	980	RETVAL
1850		981
1851	int	982	int
1852	nready()	983	nready()
1853	PROTOTYPE:	984	PROTOTYPE:
1854	CODE:	985	CODE:
1855	RETVAL = get_nready ();	986	RETVAL = eio_nready ();
1856	OUTPUT:	987	OUTPUT:
1857	RETVAL	988	RETVAL
1858		989
1859	int	990	int
1860	npending()	991	npending()
1861	PROTOTYPE:	992	PROTOTYPE:
1862	CODE:	993	CODE:
1863	RETVAL = get_npending ();	994	RETVAL = eio_npending ();
1864	OUTPUT:	995	OUTPUT:
1865	RETVAL	996	RETVAL
1866		997
1867	int	998	int
1868	nthreads()	999	nthreads()
1869	PROTOTYPE:	1000	PROTOTYPE:
1870	CODE:	1001	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1002	RETVAL = eio_nthreads ();
1872	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874	OUTPUT:	1003	OUTPUT:
1875	RETVAL	1004	RETVAL
1876		1005
		1006	void _on_next_submit (SV *cb)
		1007	CODE:
		1008	SvREFCNT_dec (on_next_submit);
		1009	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1010
1877	PROTOTYPES: DISABLE	1011	PROTOTYPES: DISABLE
1878		1012
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1013	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		1014
1881	void	1015	void
1882	cancel (aio_req_ornot req)	1016	cancel (aio_req_ornot req)
1883	CODE:	1017	CODE:
1884	req_cancel (req);	1018	eio_cancel (req);
1885		1019
1886	void	1020	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1021	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1888	CODE:	1022	CODE:
1889	SvREFCNT_dec (req->callback);	1023	SvREFCNT_dec (req->callback);
…		…
1894	void	1028	void
1895	add (aio_req grp, ...)	1029	add (aio_req grp, ...)
1896	PPCODE:	1030	PPCODE:
1897	{	1031	{
1898	int i;	1032	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		1033
1904	if (grp->int1 == 2)	1034	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1035	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		1036
1907	for (i = 1; i < items; ++i )	1037	for (i = 1; i < items; ++i )
1908	{	1038	{
		1039	aio_req req;
		1040
1909	if (GIMME_V != G_VOID)	1041	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1042	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		1043
1912	req = SvAIO_REQ (ST (i));	1044	req = SvAIO_REQ (ST (i));
1913		1045
1914	if (req)	1046	if (req)
1915	{	1047	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	1048	}
1928	}	1049	}
1929		1050
1930	void	1051	void
1931	cancel_subs (aio_req_ornot req)	1052	cancel_subs (aio_req_ornot req)
…		…
1956	grp->errorno = errorno;	1077	grp->errorno = errorno;
1957		1078
1958	void	1079	void
1959	limit (aio_req grp, int limit)	1080	limit (aio_req grp, int limit)
1960	CODE:	1081	CODE:
1961	grp->int2 = limit;	1082	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		1083
1964	void	1084	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	1085	feed (aio_req grp, SV *callback=&PL_sv_undef)
1966	CODE:	1086	CODE:
1967	{	1087	{
…		…
1969	grp->sv2 = newSVsv (callback);	1089	grp->sv2 = newSVsv (callback);
1970		1090
1971	if (grp->int2 <= 0)	1091	if (grp->int2 <= 0)
1972	grp->int2 = 2;	1092	grp->int2 = 2;
1973		1093
1974	aio_grp_feed (grp);	1094	eio_grp_limit (grp, grp->int2);
1975	}	1095	}
1976		1096

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