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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.122 by root, Tue May 13 19:35:16 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		71
43	/* used for struct dirent, AIX doesn't provide it */	72	/* use NV for 32 bit perls as it allows larger offsets */
44	#ifndef NAME_MAX	73	#if IVSIZE >= 8
45	# define NAME_MAX 4096	74	# define SvVAL64 SvIV
		75	#else
		76	# define SvVAL64 SvNV
46	#endif	77	#endif
47		78
48	/* buffer size for various temporary buffers */	79	static HV *stash;
49	#define AIO_BUFSIZE 65536
50
51	#define dBUF \
52	char *aio_buf; \
53	LOCK (wrklock); \
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
55	UNLOCK (wrklock); \
56	if (!aio_buf) \
57	return -1;
58
59	typedef SV SV8; /* byte-sv, used for argument-checking */	80	typedef SV SV8; /* byte-sv, used for argument-checking */
60
61	enum {
62	REQ_QUIT,
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};
77		81
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
80		84
81	typedef struct aio_cb	85	#define EIO_REQ_MEMBERS \
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;	86	SV *callback; \
86	SV *sv1, *sv2;	87	SV *sv1, *sv2; \
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;	88	STRLEN stroffset; \
94	int type;	89	SV *self;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98		90
99	unsigned char flags;	91	#define EIO_NO_WRAPPERS 1
100	unsigned char pri;
101		92
102	SV *self; /* the perl counterpart of this request, if any */	93	#include "libeio/eio.h"
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94
104	} 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)
105		101
106	enum {	102	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	103	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};	104	};
111		105
		106	#include "libeio/eio.c"
		107
112	typedef aio_cb *aio_req;	108	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	109	typedef eio_req *aio_req_ornot;
114		110
115	enum {	111	static SV *on_next_submit;
116	PRI_MIN = -4,	112	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	113	static int max_outstanding;
118		114
119	DEFAULT_PRI = 0,	115	static int respipe_osf [2], respipe [2] = { -1, -1 };
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		116
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	117	static void req_destroy (aio_req req);
323	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	}
324		133
325	/* must be called at most once */	134	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	135	static SV *req_sv (aio_req req, const char *klass)
327	{	136	{
328	if (!req->self)	137	if (!req->self)
…		…
346	return mg ? (aio_req)mg->mg_ptr : 0;	155	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	156	}
348		157
349	static void aio_grp_feed (aio_req grp)	158	static void aio_grp_feed (aio_req grp)
350	{	159	{
351	block_sig ();	160	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	161	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	162	dSP;
360		163
361	ENTER;	164	ENTER;
362	SAVETMPS;	165	SAVETMPS;
363	PUSHMARK (SP);	166	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	167	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
365	PUTBACK;	168	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	169	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	170	SPAGAIN;
368	FREETMPS;	171	FREETMPS;
369	LEAVE;	172	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	173	}
380
381	unblock_sig ();
382	}	174	}
383		175
384	static void aio_grp_dec (aio_req grp)	176	static void req_submit (eio_req *req)
385	{	177	{
386	--grp->size;	178	eio_submit (req);
387		179
388	/* call feeder, if applicable */	180	if (on_next_submit)
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	181	{
394	block_sig ();	182	dSP;
		183	SV *cb = sv_2mortal (on_next_submit);
395		184
396	if (!req_invoke (grp))	185	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		186
403	req_free (grp);	187	PUSHMARK (SP);
404	unblock_sig ();	188	PUTBACK;
		189	call_sv (cb, G_DISCARD | G_EVAL);
405	}	190	}
406	}	191	}
407		192
408	static int req_invoke (aio_req req)	193	static int req_invoke (eio_req *req)
409	{	194	{
410	dSP;	195	dSP;
411		196
412	if (req->flags & FLAG_SV1_RO_OFF)	197	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv1);	198	SvREADONLY_off (req->sv2);
414		199
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	200	if (!EIO_CANCELLED (req) && SvOK (req->callback))
416	{	201	{
417	ENTER;	202	ENTER;
418	SAVETMPS;	203	SAVETMPS;
419	PUSHMARK (SP);	204	PUSHMARK (SP);
420	EXTEND (SP, 1);	205	EXTEND (SP, 1);
421		206
422	switch (req->type)	207	switch (req->type)
423	{	208	{
424	case REQ_READDIR:	209	case EIO_READDIR:
425	{	210	{
426	SV *rv = &PL_sv_undef;	211	SV *rv = &PL_sv_undef;
427		212
428	if (req->result >= 0)	213	if (req->result >= 0)
429	{	214	{
…		…
446		231
447	PUSHs (rv);	232	PUSHs (rv);
448	}	233	}
449	break;	234	break;
450		235
451	case REQ_OPEN:	236	case EIO_OPEN:
452	{	237	{
453	/* convert fd to fh */	238	/* convert fd to fh */
454	SV *fh;	239	SV *fh = &PL_sv_undef;
455		240
456	PUSHs (sv_2mortal (newSViv (req->result)));	241	if (req->result >= 0)
457	PUTBACK;	242	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	243	GV *gv = (GV *)sv_newmortal ();
459	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);
460		250
461	fh = POPs;	251	symlen = snprintf (
462	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
463	XPUSHs (fh);	263	PUSHs (fh);
464	}	264	}
465	break;	265	break;
466		266
467	case REQ_GROUP:	267	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	268	req->int1 = 2; /* mark group as finished */
469		269
470	if (req->sv1)	270	if (req->sv1)
471	{	271	{
472	int i;	272	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	276	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	277	PUSHs (*av_fetch (av, i, 0));
478	}	278	}
479	break;	279	break;
480		280
481	case REQ_NOP:	281	case EIO_NOP:
482	case REQ_BUSY:	282	case EIO_BUSY:
483	break;	283	break;
484		284
485	case REQ_READLINK:	285	case EIO_READLINK:
486	if (req->result > 0)	286	if (req->result > 0)
487	{	287	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);
491	}
492	break;	288	break;
493		289
494	case REQ_STAT:	290	case EIO_STAT:
495	case REQ_LSTAT:	291	case EIO_LSTAT:
496	case REQ_FSTAT:	292	case EIO_FSTAT:
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	293	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
498	PL_laststatval = req->result;	294	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);	295	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));	296	PUSHs (sv_2mortal (newSViv (req->result)));
501	break;	297	break;
502		298
503	case REQ_READ:	299	case EIO_READ:
504	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));
505	*SvEND (req->sv2) = 0;	301	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));	302	PUSHs (sv_2mortal (newSViv (req->result)));
507	break;	303	break;
508		304
		305	case EIO_DUP2:
		306	if (req->result > 0)
		307	req->result = 0;
		308	/* FALLTHROUGH */
		309
509	default:	310	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	311	PUSHs (sv_2mortal (newSViv (req->result)));
511	break;	312	break;
512	}	313	}
513		314
514	errno = req->errorno;	315	errno = req->errorno;
515		316
516	PUTBACK;	317	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	318	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	319	SPAGAIN;
519		320
520	FREETMPS;	321	FREETMPS;
521	LEAVE;	322	LEAVE;
		323
		324	PUTBACK;
522	}	325	}
523		326
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	327	return !!SvTRUE (ERRSV);
539	}	328	}
540		329
541	static void req_free (aio_req req)	330	static void req_destroy (aio_req req)
542	{	331	{
543	if (req->self)	332	if (req->self)
544	{	333	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	334	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	335	SvREFCNT_dec (req->self);
…		…
548		337
549	SvREFCNT_dec (req->sv1);	338	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	339	SvREFCNT_dec (req->sv2);
551	SvREFCNT_dec (req->callback);	340	SvREFCNT_dec (req->callback);
552		341
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	342	Safefree (req);
557	}	343	}
558		344
559	static void req_cancel_subs (aio_req grp)	345	static void req_cancel_subs (aio_req grp)
560	{	346	{
561	aio_req sub;	347	aio_req sub;
562		348
563	if (grp->type != REQ_GROUP)	349	if (grp->type != EIO_GROUP)
564	return;	350	return;
565		351
566	SvREFCNT_dec (grp->sv2);	352	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	353	grp->sv2 = 0;
568		354
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	355	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	356	}
572		357
573	static void req_cancel (aio_req req)	358	#ifdef USE_SOCKETS_AS_HANDLES
574	{	359	# define TO_SOCKET(x) (win32_get_osfhandle (x))
575	req->flags |= FLAG_CANCELLED;	360	#else
		361	# define TO_SOCKET(x) (x)
		362	#endif
576		363
577	req_cancel_subs (req);	364	static void
578	}	365	create_respipe (void)
579
580	static void *aio_proc(void *arg);
581
582	static void start_thread (void)
583	{	366	{
584	worker *wrk = calloc (1, sizeof (worker));	367	int old_readfd = respipe [0];
585		368
586	if (!wrk)	369	if (respipe [1] >= 0)
587	croak ("unable to allocate worker thread data");	370	respipe_close (TO_SOCKET (respipe [1]));
588		371
589	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");
590		378
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	379	if (old_readfd >= 0)
592	{	380	{
593	wrk->prev = &wrk_first;	381	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
594	wrk->next = wrk_first.next;	382	croak ("unable to initialize result pipe(2)");
595	wrk_first.next->prev = wrk;	383
596	wrk_first.next = wrk;	384	respipe_close (respipe [0]);
597	++started;	385	respipe [0] = old_readfd;
598	}	386	}
599	else
600	free (wrk);
601		387
602	UNLOCK (wrklock);	388	#ifdef _WIN32
603	}	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)");
604		397
605	static void maybe_start_thread ()	398	respipe_osf [0] = TO_SOCKET (respipe [0]);
606	{	399	respipe_osf [1] = TO_SOCKET (respipe [1]);
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}	400	}
616		401
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()	402	static void poll_wait (void)
676	{	403	{
677	fd_set rfd;	404	fd_set rfd;
678		405
679	while (nreqs)	406	while (eio_nreqs ())
680	{	407	{
681	int size;	408	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	409
		410	X_LOCK (reslock);
683	size = res_queue.size;	411	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	412	X_UNLOCK (reslock);
685		413
686	if (size)	414	if (size)
687	return;	415	return;
688		416
689	maybe_start_thread ();	417	maybe_start_thread ();
690		418
691	FD_ZERO(&rfd);	419	FD_ZERO (&rfd);
692	FD_SET(respipe [0], &rfd);	420	FD_SET (respipe [0], &rfd);
693		421
694	select (respipe [0] + 1, &rfd, 0, 0, 0);	422	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	423	}
696	}	424	}
697		425
698	static int poll_cb ()	426	static int poll_cb (void)
699	{	427	{
700	dSP;	428	int res;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706		429
707	if (max_poll_time)	430	do
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)
713	{	431	{
714	for (;;)	432	res = eio_poll ();
715	{
716	maybe_start_thread ();
717		433
718	LOCK (reslock);	434	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);	435	croak (0);
753	}
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;
774
775	poll_wait ();
776
777	++maxreqs;
778	}	436	}
779		437	while (max_outstanding && max_outstanding <= eio_nreqs ());
780	unblock_sig ();
781	return count;
782	}
783
784	static void create_pipe ()
785	{
786	if (pipe (respipe))
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}
795
796	/*****************************************************************************/
797	/* work around various missing functions */
798
799	#if !HAVE_PREADWRITE
800	# define pread aio_pread
801	# define pwrite aio_pwrite
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821		438
822	return res;	439	return res;
823	}	440	}
824		441
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974
975	if (res < 0
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
977	#if __solaris
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985
986	res = 0;
987
988	while (count)
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993
994	if (cnt <= 0)
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999
1000	cnt = write (ofd, aio_buf, cnt);
1001
1002	if (cnt <= 0)
1003	{
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;
1015	}
1016
1017	/* read a full directory */
1018	static void scandir_ (aio_req req, worker *self)
1019	{
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078
1079	/*****************************************************************************/
1080
1081	static void *aio_proc (void *thr_arg)
1082	{
1083	aio_req req;
1084	struct timespec ts;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)	442	static void atfork_child (void)
1271	{	443	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();	444	create_respipe ();
1300
1301	atfork_parent ();
1302	}	445	}
1303		446
1304	#define dREQ \	447	#define dREQ \
1305	aio_req req; \	448	aio_req req; \
1306	int req_pri = next_pri; \	449	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \	450	next_pri = EIO_PRI_DEFAULT; \
1308	\	451	\
1309	if (SvOK (callback) && !SvROK (callback)) \	452	if (SvOK (callback) && !SvROK (callback)) \
1310	croak ("callback must be undef or of reference type"); \	453	croak ("callback must be undef or of reference type"); \
1311	\	454	\
1312	Newz (0, req, 1, aio_cb); \	455	Newz (0, req, 1, eio_req); \
1313	if (!req) \	456	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \	457	croak ("out of memory during eio_req allocation"); \
1315	\	458	\
1316	req->callback = newSVsv (callback); \	459	req->callback = newSVsv (callback); \
1317	req->pri = req_pri	460	req->pri = req_pri
1318		461
1319	#define REQ_SEND \	462	#define REQ_SEND \
1320	req_send (req); \	463	req_submit (req); \
1321	\	464	\
1322	if (GIMME_V != G_VOID) \	465	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));	466	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1324		467
1325	MODULE = IO::AIO PACKAGE = IO::AIO	468	MODULE = IO::AIO PACKAGE = IO::AIO
1326		469
1327	PROTOTYPES: ENABLE	470	PROTOTYPES: ENABLE
1328		471
1329	BOOT:	472	BOOT:
1330	{	473	{
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	474	stash = gv_stashpv ("IO::AIO", 1);
1332		475
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	476	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	477	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	478	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	479	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	480	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		481	#ifndef _WIN32
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	482	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));	483	#endif
1340		484
1341	create_pipe ();	485	create_respipe ();
1342	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);
1343	}	492	}
1344		493
1345	void	494	void
1346	max_poll_reqs (int nreqs)	495	max_poll_reqs (int nreqs)
1347	PROTOTYPE: $	496	PROTOTYPE: $
1348	CODE:	497	CODE:
1349	max_poll_reqs = nreqs;	498	eio_set_max_poll_reqs (nreqs);
1350		499
1351	void	500	void
1352	max_poll_time (double nseconds)	501	max_poll_time (double nseconds)
1353	PROTOTYPE: $	502	PROTOTYPE: $
1354	CODE:	503	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	504	eio_set_max_poll_time (nseconds);
1356		505
1357	void	506	void
1358	min_parallel (int nthreads)	507	min_parallel (int nthreads)
1359	PROTOTYPE: $	508	PROTOTYPE: $
		509	CODE:
		510	eio_set_min_parallel (nthreads);
1360		511
1361	void	512	void
1362	max_parallel (int nthreads)	513	max_parallel (int nthreads)
1363	PROTOTYPE: $	514	PROTOTYPE: $
		515	CODE:
		516	eio_set_max_parallel (nthreads);
1364		517
1365	void	518	void
1366	max_idle (int nthreads)	519	max_idle (int nthreads)
1367	PROTOTYPE: $	520	PROTOTYPE: $
1368	CODE:	521	CODE:
1369	set_max_idle (nthreads);	522	eio_set_max_idle (nthreads);
1370		523
1371	int	524	void
1372	max_outstanding (int maxreqs)	525	max_outstanding (int maxreqs)
1373	PROTOTYPE: $	526	PROTOTYPE: $
1374	CODE:	527	CODE:
1375	RETVAL = max_outstanding;
1376	max_outstanding = maxreqs;	528	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		529
1380	void	530	void
1381	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)
1382	PROTOTYPE: $$$;$	532	PROTOTYPE: $$$;$
1383	PPCODE:	533	PPCODE:
1384	{	534	{
1385	dREQ;	535	dREQ;
1386		536
1387	req->type = REQ_OPEN;	537	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	538	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	539	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	540	req->int1 = flags;
1391	req->mode = mode;	541	req->int2 = mode;
1392		542
1393	REQ_SEND;	543	REQ_SEND;
1394	}	544	}
1395		545
1396	void	546	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	547	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$	548	PROTOTYPE: $;$
1399	ALIAS:	549	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	550	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = EIO_FDATASYNC
1403	PPCODE:	552	PPCODE:
1404	{	553	{
1405	dREQ;	554	dREQ;
1406		555
1407	req->type = ix;	556	req->type = ix;
…		…
1410		559
1411	REQ_SEND (req);	560	REQ_SEND (req);
1412	}	561	}
1413		562
1414	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
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	592	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:	593	ALIAS:
1417	aio_read = REQ_READ	594	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	595	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$	596	PROTOTYPE: $$$$$;$
1420	PPCODE:	597	PPCODE:
1421	{	598	{
1422	STRLEN svlen;	599	STRLEN svlen;
1423	char *svptr = SvPVbyte (data, svlen);	600	char *svptr = SvPVbyte (data, svlen);
		601	UV len = SvUV (length);
1424		602
1425	SvUPGRADE (data, SVt_PV);	603	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);	604	SvPOK_on (data);
1427		605
1428	if (dataoffset < 0)	606	if (dataoffset < 0)
1429	dataoffset += svlen;	607	dataoffset += svlen;
1430		608
1431	if (dataoffset < 0 || dataoffset > svlen)	609	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	610	croak ("dataoffset outside of data scalar");
1433		611
1434	if (ix == REQ_WRITE)	612	if (ix == EIO_WRITE)
1435	{	613	{
1436	/* write: check length and adjust. */	614	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	615	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	616	len = svlen - dataoffset;
1439	}	617	}
1440	else	618	else
1441	{	619	{
1442	/* read: grow scalar as necessary */	620	/* read: grow scalar as necessary */
1443	svptr = SvGROW (data, length + dataoffset + 1);	621	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	622	}
1445		623
1446	if (length < 0)	624	if (len < 0)
1447	croak ("length must not be negative");	625	croak ("length must not be negative");
1448		626
1449	{	627	{
1450	dREQ;	628	dREQ;
1451		629
1452	req->type = ix;	630	req->type = ix;
1453	req->sv1 = newSVsv (fh);	631	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	632	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1455	: IoOFP (sv_2io (fh)));	633	: IoOFP (sv_2io (fh)));
1456	req->offs = offset;	634	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1457	req->size = length;	635	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	636	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	637	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	638	req->stroffset = dataoffset;
1461		639
1462	if (!SvREADONLY (data))	640	if (!SvREADONLY (data))
1463	{	641	{
1464	SvREADONLY_on (data);	642	SvREADONLY_on (data);
1465	req->flags |= FLAG_SV1_RO_OFF;	643	req->flags |= FLAG_SV2_RO_OFF;
1466	}	644	}
1467		645
1468	REQ_SEND;	646	REQ_SEND;
1469	}	647	}
1470	}	648	}
…		…
1475	PPCODE:	653	PPCODE:
1476	{	654	{
1477	SV *data;	655	SV *data;
1478	dREQ;	656	dREQ;
1479		657
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	658	req->type = EIO_READLINK;
1484	req->sv1 = newSVsv (path);	659	req->sv1 = newSVsv (path);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);	660	req->ptr1 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		661
1489	REQ_SEND;	662	REQ_SEND;
1490	}	663	}
1491		664
1492	void	665	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	666	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$	667	PROTOTYPE: $$$$;$
1495	PPCODE:	668	PPCODE:
1496	{	669	{
1497	dREQ;	670	dREQ;
1498		671
1499	req->type = REQ_SENDFILE;	672	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	673	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1502	req->sv2 = newSVsv (in_fh);	675	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	676	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1504	req->offs = in_offset;	677	req->offs = SvVAL64 (in_offset);
1505	req->size = length;	678	req->size = length;
1506		679
1507	REQ_SEND;	680	REQ_SEND;
1508	}	681	}
1509		682
1510	void	683	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	684	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1513	PPCODE:	686	PPCODE:
1514	{	687	{
1515	dREQ;	688	dREQ;
1516		689
1517	req->type = REQ_READAHEAD;	690	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1520	req->offs = offset;	693	req->offs = SvVAL64 (offset);
1521	req->size = length;	694	req->size = length;
1522		695
1523	REQ_SEND;	696	REQ_SEND;
1524	}	697	}
1525		698
1526	void	699	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	700	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	701	ALIAS:
1529	aio_stat = REQ_STAT	702	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	703	aio_lstat = EIO_LSTAT
1531	PPCODE:	704	PPCODE:
1532	{	705	{
1533	dREQ;	706	dREQ;
1534		707
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);	708	req->sv1 = newSVsv (fh_or_path);
1544		709
1545	if (SvPOK (fh_or_path))	710	if (SvPOK (req->sv1))
1546	{	711	{
1547	req->type = ix;	712	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);	713	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}	714	}
1550	else	715	else
1551	{	716	{
1552	req->type = REQ_FSTAT;	717	req->type = EIO_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	718	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}	719	}
1555		720
1556	REQ_SEND;	721	REQ_SEND;
1557	}	722	}
…		…
1564		729
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	730	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	731	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	732	req->sv1 = newSVsv (fh_or_path);
1568		733
1569	if (SvPOK (fh_or_path))	734	if (SvPOK (req->sv1))
1570	{	735	{
1571	req->type = REQ_UTIME;	736	req->type = EIO_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}	738	}
1574	else	739	else
1575	{	740	{
1576	req->type = REQ_FUTIME;	741	req->type = EIO_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}	743	}
1579		744
1580	REQ_SEND;	745	REQ_SEND;
1581	}	746	}
1582		747
1583	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
1584	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
1585	PPCODE:	776	PPCODE:
1586	{	777	{
1587	dREQ;	778	dREQ;
1588		779
1589	req->mode = mode;	780	req->int2 = mode;
1590	req->sv1 = newSVsv (fh_or_path);	781	req->sv1 = newSVsv (fh_or_path);
1591		782
1592	if (SvPOK (fh_or_path))	783	if (SvPOK (req->sv1))
1593	{	784	{
1594	req->type = REQ_CHMOD;	785	req->type = ix;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);	786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}	787	}
1597	else	788	else
1598	{	789	{
1599	req->type = REQ_FCHMOD;	790	req->type = EIO_FCHMOD;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	791	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}	792	}
1602		793
1603	REQ_SEND;	794	REQ_SEND;
1604	}	795	}
…		…
1611		802
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	805	req->sv1 = newSVsv (fh_or_path);
1615		806
1616	if (SvPOK (fh_or_path))	807	if (SvPOK (req->sv1))
1617	{	808	{
1618	req->type = REQ_CHOWN;	809	req->type = EIO_CHOWN;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);	810	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}	811	}
1621	else	812	else
1622	{	813	{
1623	req->type = REQ_FCHOWN;	814	req->type = EIO_FCHOWN;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}	816	}
1626		817
1627	REQ_SEND;	818	REQ_SEND;
1628	}	819	}
1629		820
1630	void	821	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	823	ALIAS:
1633	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1636	PPCODE:	827	PPCODE:
1637	{	828	{
1638	dREQ;	829	dREQ;
1639		830
1640	req->type = ix;	831	req->type = ix;
…		…
1643		834
1644	REQ_SEND;	835	REQ_SEND;
1645	}	836	}
1646		837
1647	void	838	void
1648	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
1649	PPCODE:	844	PPCODE:
1650	{	845	{
1651	dREQ;	846	dREQ;
1652		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
1653	req->type = REQ_MKDIR;	863	req->type = EIO_MKNOD;
1654	req->sv1 = newSVsv (pathname);	864	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:
1664	aio_link = REQ_LINK
1665	aio_symlink = REQ_SYMLINK
1666	aio_rename = REQ_RENAME
1667	PPCODE:
1668	{
1669	dREQ;
1670
1671	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676
1677	REQ_SEND;
1678	}
1679
1680	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1682	PPCODE:
1683	{
1684	dREQ;
1685
1686	req->type = REQ_MKNOD;
1687	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;	866	req->int2 = (mode_t)mode;
1690	req->offs = dev;	867	req->offs = dev;
1691		868
1692	REQ_SEND;	869	REQ_SEND;
1693	}	870	}
1694		871
…		…
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	874	PPCODE:
1698	{	875	{
1699	dREQ;	876	dREQ;
1700		877
1701	req->type = REQ_BUSY;	878	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1703		880
1704	REQ_SEND;	881	REQ_SEND;
1705	}	882	}
1706		883
…		…
1709	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1710	PPCODE:	887	PPCODE:
1711	{	888	{
1712	dREQ;	889	dREQ;
1713		890
1714	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
1715		892
1716	req_send (req);	893	eio_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1718	}	895	}
1719		896
1720	void	897	void
1721	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
1722	PPCODE:	902	PPCODE:
1723	{	903	{
1724	dREQ;	904	dREQ;
1725		905
1726	req->type = REQ_NOP;	906	req->type = ix;
1727		907
1728	REQ_SEND;	908	REQ_SEND;
1729	}	909	}
1730		910
1731	int	911	int
1732	aioreq_pri (int pri = 0)	912	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$	913	PROTOTYPE: ;$
1734	CODE:	914	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	915	RETVAL = next_pri;
1736	if (items > 0)	916	if (items > 0)
1737	{	917	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	920	next_pri = pri;
1741	}	921	}
1742	OUTPUT:	922	OUTPUT:
1743	RETVAL	923	RETVAL
1744		924
1745	void	925	void
1746	aioreq_nice (int nice = 0)	926	aioreq_nice (int nice = 0)
1747	CODE:	927	CODE:
1748	nice = next_pri - nice;	928	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	931	next_pri = nice;
1752		932
1753	void	933	void
1754	flush ()	934	flush ()
1755	PROTOTYPE:	935	PROTOTYPE:
1756	CODE:	936	CODE:
1757	while (nreqs)	937	while (eio_nreqs ())
1758	{	938	{
1759	poll_wait ();	939	poll_wait ();
1760	poll_cb ();	940	poll_cb ();
1761	}	941	}
1762		942
…		…
1789	poll_wait()	969	poll_wait()
1790	PROTOTYPE:	970	PROTOTYPE:
1791	CODE:	971	CODE:
1792	poll_wait ();	972	poll_wait ();
1793		973
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	974	int
1832	nreqs()	975	nreqs()
1833	PROTOTYPE:	976	PROTOTYPE:
1834	CODE:	977	CODE:
1835	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1836	OUTPUT:	979	OUTPUT:
1837	RETVAL	980	RETVAL
1838		981
1839	int	982	int
1840	nready()	983	nready()
1841	PROTOTYPE:	984	PROTOTYPE:
1842	CODE:	985	CODE:
1843	RETVAL = get_nready ();	986	RETVAL = eio_nready ();
1844	OUTPUT:	987	OUTPUT:
1845	RETVAL	988	RETVAL
1846		989
1847	int	990	int
1848	npending()	991	npending()
1849	PROTOTYPE:	992	PROTOTYPE:
1850	CODE:	993	CODE:
1851	RETVAL = get_npending ();	994	RETVAL = eio_npending ();
1852	OUTPUT:	995	OUTPUT:
1853	RETVAL	996	RETVAL
1854		997
1855	int	998	int
1856	nthreads()	999	nthreads()
1857	PROTOTYPE:	1000	PROTOTYPE:
1858	CODE:	1001	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1002	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1003	OUTPUT:
1863	RETVAL	1004	RETVAL
1864		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
1865	PROTOTYPES: DISABLE	1011	PROTOTYPES: DISABLE
1866		1012
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1013	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1014
1869	void	1015	void
1870	cancel (aio_req_ornot req)	1016	cancel (aio_req_ornot req)
1871	CODE:	1017	CODE:
1872	req_cancel (req);	1018	eio_cancel (req);
1873		1019
1874	void	1020	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1021	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1022	CODE:
1877	SvREFCNT_dec (req->callback);	1023	SvREFCNT_dec (req->callback);
…		…
1882	void	1028	void
1883	add (aio_req grp, ...)	1029	add (aio_req grp, ...)
1884	PPCODE:	1030	PPCODE:
1885	{	1031	{
1886	int i;	1032	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1033
1892	if (grp->int1 == 2)	1034	if (grp->int1 == 2)
1893	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");
1894		1036
1895	for (i = 1; i < items; ++i )	1037	for (i = 1; i < items; ++i )
1896	{	1038	{
		1039	aio_req req;
		1040
1897	if (GIMME_V != G_VOID)	1041	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1042	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1043
1900	req = SvAIO_REQ (ST (i));	1044	req = SvAIO_REQ (ST (i));
1901		1045
1902	if (req)	1046	if (req)
1903	{	1047	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1048	}
1916	}	1049	}
1917		1050
1918	void	1051	void
1919	cancel_subs (aio_req_ornot req)	1052	cancel_subs (aio_req_ornot req)
…		…
1944	grp->errorno = errorno;	1077	grp->errorno = errorno;
1945		1078
1946	void	1079	void
1947	limit (aio_req grp, int limit)	1080	limit (aio_req grp, int limit)
1948	CODE:	1081	CODE:
1949	grp->int2 = limit;	1082	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1083
1952	void	1084	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1085	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1086	CODE:
1955	{	1087	{
…		…
1957	grp->sv2 = newSVsv (callback);	1089	grp->sv2 = newSVsv (callback);
1958		1090
1959	if (grp->int2 <= 0)	1091	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1092	grp->int2 = 2;
1961		1093
1962	aio_grp_feed (grp);	1094	eio_grp_limit (grp, grp->int2);
1963	}	1095	}
1964		1096

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