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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC

1	#define _REENTRANT 1	1	#include "xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "autoconf/config.h"
9		10
10	#include <pthread.h>
11
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>	14	#include <sys/time.h>
15	#include <sys/select.h>	15	#include <sys/select.h>
16	#include <sys/types.h>	16	#include <sys/types.h>
17	#include <sys/stat.h>	17	#include <sys/stat.h>
18	#include <limits.h>	18	#include <limits.h>
19	#include <unistd.h>	19	#include <unistd.h>
20	#include <fcntl.h>	20	#include <fcntl.h>
21	#include <signal.h>	21	#include <signal.h>
22	#include <sched.h>	22	#include <sched.h>
		23	#include <utime.h>
23		24
24	#if HAVE_SENDFILE	25	#if HAVE_SENDFILE
25	# if __linux	26	# if __linux
26	# include <sys/sendfile.h>	27	# include <sys/sendfile.h>
27	# elif __freebsd	28	# elif __freebsd
…		…
34	# else	35	# else
35	# error sendfile support requested but not available	36	# error sendfile support requested but not available
36	# endif	37	# endif
37	#endif	38	#endif
38		39
		40	/* number of seconds after which idle threads exit */
		41	#define IDLE_TIMEOUT 10
		42
39	/* used for struct dirent, AIX doesn't provide it */	43	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	44	#ifndef NAME_MAX
41	# define NAME_MAX 4096	45	# define NAME_MAX 4096
42	#endif	46	#endif
43		47
44	#if __ia64	48	/* buffer size for various temporary buffers */
45	# define STACKSIZE 65536	49	#define AIO_BUFSIZE 65536
		50
		51	/* use NV for 32 bit perls as it allows larger offsets */
		52	#if IVSIZE >= 8
		53	# define SvVAL64 SvIV
46	#else	54	#else
47	# define STACKSIZE 8192	55	# define SvVAL64 SvNV
48	#endif	56	#endif
		57
		58	#define dBUF \
		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 */
49		67
50	enum {	68	enum {
51	REQ_QUIT,	69	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	70	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	71	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	72	REQ_READAHEAD, REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		74	REQ_UTIME, REQ_FUTIME,
		75	REQ_CHMOD, REQ_FCHMOD,
		76	REQ_CHOWN, REQ_FCHOWN,
56	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	79	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	81	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	82	REQ_BUSY,
62	};	83	};
63		84
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	86	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		87
67	typedef struct aio_cb	88	typedef struct aio_cb
68	{	89	{
69	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
70		91
		92	SV *callback;
		93	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;
		101	int type;
		102	int int1, int2, int3;
		103	int errorno;
		104	mode_t mode; /* open */
		105
		106	unsigned char flags;
		107	unsigned char pri;
		108
		109	SV *self; /* the perl counterpart of this request, if any */
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;	111	} aio_cb;
		112
		113	enum {
		114	FLAG_CANCELLED = 0x01, /* request was cancelled */
		115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
		117	};
90		118
91	typedef aio_cb *aio_req;	119	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	120	typedef aio_cb *aio_req_ornot;
93		121
		122	enum {
		123	PRI_MIN = -4,
		124	PRI_MAX = 4,
		125
		126	DEFAULT_PRI = 0,
		127	PRI_BIAS = -PRI_MIN,
		128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		129	};
		130
		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
94	static int started, wanted;	179	static unsigned int started, idle, wanted;
95	static volatile int nreqs;	180
96	static int max_outstanding = 1<<30;	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;
97	static int respipe [2];	224	static int respipe [2];
98		225
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	226	static mutex_t reslock = MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	227	static mutex_t reqlock = MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	228	static cond_t reqwait = COND_INIT;
102		229
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	230	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		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);
106	static void req_free (aio_req req);	330	static void req_cancel (aio_req req);
107		331
108	/* must be called at most once */	332	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
110	{	334	{
111	if (!req->self)	335	if (!req->self)
…		…
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
118	}	342	}
119		343
120	static aio_req SvAIO_REQ (SV *sv)	344	static aio_req SvAIO_REQ (SV *sv)
121	{	345	{
		346	MAGIC *mg;
		347
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
123	croak ("object of class " AIO_REQ_KLASS " expected");	349	croak ("object of class " AIO_REQ_KLASS " expected");
124		350
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		352
127	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	354	}
129		355
130	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
131	{	357	{
132	while (grp->length < grp->fd2)	358	block_sig ();
		359
		360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
133	{	361	{
134	int old_len = grp->length;	362	int old_len = grp->size;
135		363
136	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
137	{	365	{
138	dSP;	366	dSP;
139		367
140	ENTER;	368	ENTER;
141	SAVETMPS;	369	SAVETMPS;
142	PUSHMARK (SP);	370	PUSHMARK (SP);
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
144	PUTBACK;	372	PUTBACK;
145	call_sv (grp->fh2, G_VOID | G_EVAL);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
146	SPAGAIN;	374	SPAGAIN;
147	FREETMPS;	375	FREETMPS;
148	LEAVE;	376	LEAVE;
149	}	377	}
150		378
151	/* stop if no progress has been made */	379	/* stop if no progress has been made */
152	if (old_len == grp->length)	380	if (old_len == grp->size)
153	{	381	{
154	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
155	grp->fh2 = 0;	383	grp->sv2 = 0;
156	break;	384	break;
157	}	385	}
158	}	386	}
159	}
160		387
161	static void poll_wait ()	388	unblock_sig ();
		389	}
		390
		391	static void aio_grp_dec (aio_req grp)
162	{	392	{
163	if (nreqs && !ress)	393	--grp->size;
		394
		395	/* call feeder, if applicable */
		396	aio_grp_feed (grp);
		397
		398	/* finish, if done */
		399	if (!grp->size && grp->int1)
164	{	400	{
165	fd_set rfd;	401	block_sig ();
166	FD_ZERO(&rfd);
167	FD_SET(respipe [0], &rfd);
168		402
169	select (respipe [0] + 1, &rfd, 0, 0, 0);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
		410	req_destroy (grp);
		411	unblock_sig ();
170	}	412	}
171	}	413	}
172		414
173	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
174	{	416	{
175	dSP;	417	dSP;
176	int errorno = errno;
177		418
178	if (req->cancelled || !SvOK (req->callback))	419	if (req->flags & FLAG_SV2_RO_OFF)
179	return;	420	SvREADONLY_off (req->sv2);
180		421
181	errno = req->errorno;	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
182
183	ENTER;
184	SAVETMPS;
185	PUSHMARK (SP);
186	EXTEND (SP, 1);
187
188	switch (req->type)
189	{	423	{
190	case REQ_READDIR:	424	ENTER;
		425	SAVETMPS;
		426	PUSHMARK (SP);
		427	EXTEND (SP, 1);
		428
		429	switch (req->type)
191	{	430	{
192	SV *rv = &PL_sv_undef;	431	case REQ_READDIR:
193
194	if (req->result >= 0)
195	{	432	{
196	char *buf = req->data2ptr;	433	SV *rv = &PL_sv_undef;
197	AV *av = newAV ();
198		434
199	while (req->result)	435	if (req->result >= 0)
200	{	436	{
		437	int i;
		438	char *buf = req->ptr2;
		439	AV *av = newAV ();
		440
		441	av_extend (av, req->result - 1);
		442
		443	for (i = 0; i < req->result; ++i)
		444	{
201	SV *sv = newSVpv (buf, 0);	445	SV *sv = newSVpv (buf, 0);
202		446
203	av_push (av, sv);	447	av_store (av, i, sv);
204	buf += SvCUR (sv) + 1;	448	buf += SvCUR (sv) + 1;
205	req->result--;	449	}
		450
		451	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}	452	}
207		453
208	rv = sv_2mortal (newRV_noinc ((SV *)av));	454	PUSHs (rv);
209	}	455	}
		456	break;
210		457
		458	case REQ_OPEN:
		459	{
		460	/* convert fd to fh */
		461	SV *fh;
		462
		463	PUSHs (sv_2mortal (newSViv (req->result)));
		464	PUTBACK;
		465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		466	SPAGAIN;
		467
		468	fh = POPs;
		469	PUSHMARK (SP);
211	PUSHs (rv);	470	XPUSHs (fh);
		471	}
		472	break;
		473
		474	case REQ_GROUP:
		475	req->int1 = 2; /* mark group as finished */
		476
		477	if (req->sv1)
		478	{
		479	int i;
		480	AV *av = (AV *)req->sv1;
		481
		482	EXTEND (SP, AvFILL (av) + 1);
		483	for (i = 0; i <= AvFILL (av); ++i)
		484	PUSHs (*av_fetch (av, i, 0));
		485	}
		486	break;
		487
		488	case REQ_NOP:
		489	case REQ_BUSY:
		490	break;
		491
		492	case REQ_READLINK:
		493	if (req->result > 0)
		494	{
		495	SvCUR_set (req->sv2, req->result);
		496	*SvEND (req->sv2) = 0;
		497	PUSHs (req->sv2);
		498	}
		499	break;
		500
		501	case REQ_STAT:
		502	case REQ_LSTAT:
		503	case REQ_FSTAT:
		504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		505	PL_laststatval = req->result;
		506	PL_statcache = *(Stat_t *)(req->ptr2);
		507	PUSHs (sv_2mortal (newSViv (req->result)));
		508	break;
		509
		510	case REQ_READ:
		511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		512	*SvEND (req->sv2) = 0;
		513	PUSHs (sv_2mortal (newSViv (req->result)));
		514	break;
		515
		516	default:
		517	PUSHs (sv_2mortal (newSViv (req->result)));
		518	break;
212	}	519	}
213	break;
214		520
215	case REQ_OPEN:	521	errno = req->errorno;
216	{
217	/* convert fd to fh */
218	SV *fh;
219		522
220	PUSHs (sv_2mortal (newSViv (req->result)));
221	PUTBACK;	523	PUTBACK;
222	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
223	SPAGAIN;	525	SPAGAIN;
224		526
225	fh = SvREFCNT_inc (POPs);	527	FREETMPS;
226		528	LEAVE;
227	PUSHMARK (SP);
228	XPUSHs (sv_2mortal (fh));
229	}
230	break;
231
232	case REQ_GROUP:
233	req->fd = 2; /* mark group as finished */
234
235	if (req->data)
236	{
237	int i;
238	AV *av = (AV *)req->data;
239
240	EXTEND (SP, AvFILL (av) + 1);
241	for (i = 0; i <= AvFILL (av); ++i)
242	PUSHs (*av_fetch (av, i, 0));
243	}
244	break;
245
246	case REQ_SLEEP:
247	break;
248
249	default:
250	PUSHs (sv_2mortal (newSViv (req->result)));
251	break;
252	}	529	}
253		530
254
255	PUTBACK;
256	call_sv (req->callback, G_VOID | G_EVAL);
257	SPAGAIN;
258
259	if (SvTRUE (ERRSV))
260	{
261	req_free (req);
262	croak (0);
263	}
264
265	FREETMPS;
266	LEAVE;
267
268	errno = errorno;
269	}
270
271	static void req_free (aio_req req)
272	{
273	if (req->grp)	531	if (req->grp)
274	{	532	{
275	aio_req grp = req->grp;	533	aio_req grp = req->grp;
276		534
277	/* unlink request */	535	/* unlink request */
…		…
279	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;	537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280		538
281	if (grp->grp_first == req)	539	if (grp->grp_first == req)
282	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
283		541
284	--grp->length;
285
286	/* call feeder, if applicable */
287	aio_grp_feed (grp);	542	aio_grp_dec (grp);
288
289	/* finish, if done */
290	if (!grp->length && grp->fd)
291	{
292	req_invoke (grp);
293	req_free (grp);
294	}
295	}	543	}
296		544
		545	return !SvTRUE (ERRSV);
		546	}
		547
		548	static void req_destroy (aio_req req)
		549	{
297	if (req->self)	550	if (req->self)
298	{	551	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
301	}	554	}
302		555
303	SvREFCNT_dec (req->data);
304	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
305	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
306	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);
308		559
309	if (req->type == REQ_READDIR && req->result >= 0)	560	if (req->flags & FLAG_PTR2_FREE)
310	free (req->data2ptr);	561	free (req->ptr2);
311		562
312	Safefree (req);	563	Safefree (req);
313	}	564	}
314		565
		566	static void req_cancel_subs (aio_req grp)
		567	{
		568	aio_req sub;
		569
		570	if (grp->type != REQ_GROUP)
		571	return;
		572
		573	SvREFCNT_dec (grp->sv2);
		574	grp->sv2 = 0;
		575
		576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		577	req_cancel (sub);
		578	}
		579
315	static void req_cancel (aio_req req)	580	static void req_cancel (aio_req req)
316	{	581	{
317	req->cancelled = 1;	582	req->flags |= FLAG_CANCELLED;
318		583
319	if (req->type == REQ_GROUP)	584	req_cancel_subs (req);
		585	}
		586
		587	static void *aio_proc (void *arg);
		588
		589	static void start_thread (void)
		590	{
		591	worker *wrk = calloc (1, sizeof (worker));
		592
		593	if (!wrk)
		594	croak ("unable to allocate worker thread data");
		595
		596	LOCK (wrklock);
		597
		598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
320	{	599	{
321	aio_req sub;	600	wrk->prev = &wrk_first;
		601	wrk->next = wrk_first.next;
		602	wrk_first.next->prev = wrk;
		603	wrk_first.next = wrk;
		604	++started;
		605	}
		606	else
		607	free (wrk);
322		608
323	for (sub = req->grp_first; sub; sub = sub->grp_next)	609	UNLOCK (wrklock);
324	req_cancel (sub);	610	}
		611
		612	static void maybe_start_thread ()
		613	{
		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	}
		623
		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 ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
		687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
		696	maybe_start_thread ();
		697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
325	}	702	}
326	}	703	}
327		704
328	static int poll_cb ()	705	static int poll_cb ()
329	{	706	{
330	dSP;	707	dSP;
331	int count = 0;	708	int count = 0;
		709	int maxreqs = max_poll_reqs;
332	int do_croak = 0;	710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
333	aio_req req;	712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
334		718
335	for (;;)	719	for (;;)
336	{	720	{
337	pthread_mutex_lock (&reslock);	721	for (;;)
338	req = ress;
339
340	if (req)
341	{	722	{
342	ress = req->next;	723	maybe_start_thread ();
343		724
		725	LOCK (reslock);
		726	req = reqq_shift (&res_queue);
		727
344	if (!ress)	728	if (req)
345	{	729	{
		730	--npending;
		731
		732	if (!res_queue.size)
		733	{
346	/* read any signals sent by the worker threads */	734	/* read any signals sent by the worker threads */
347	char buf [32];	735	char buf [4];
348	while (read (respipe [0], buf, 32) == 32)	736	while (read (respipe [0], buf, 4) == 4)
		737	;
349	;	738	}
		739	}
350		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);
		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)
351	rese = 0;	775	break;
352	}	776	}
353	}	777	}
354		778
355	pthread_mutex_unlock (&reslock);	779	if (nreqs <= max_outstanding)
356
357	if (!req)
358	break;	780	break;
359		781
360	nreqs--;	782	poll_wait ();
361		783
362	if (req->type == REQ_QUIT)	784	++maxreqs;
363	started--;
364	else if (req->type == REQ_GROUP && req->length)
365	{
366	req->fd = 1; /* mark request as delayed */
367	continue;
368	}
369	else
370	{
371	if (req->type == REQ_READ)
372	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
373
374	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
375	SvREADONLY_off (req->data);
376
377	if (req->statdata)
378	{
379	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
380	PL_laststatval = req->result;
381	PL_statcache = *(req->statdata);
382	}
383
384	req_invoke (req);
385
386	count++;
387	}
388
389	req_free (req);
390	}	785	}
391		786
		787	unblock_sig ();
392	return count;	788	return count;
393	}
394
395	static void *aio_proc(void *arg);
396
397	static void start_thread (void)
398	{
399	sigset_t fullsigset, oldsigset;
400	pthread_t tid;
401	pthread_attr_t attr;
402
403	pthread_attr_init (&attr);
404	pthread_attr_setstacksize (&attr, STACKSIZE);
405	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
406
407	sigfillset (&fullsigset);
408	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
409
410	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
411	started++;
412
413	sigprocmask (SIG_SETMASK, &oldsigset, 0);
414	}
415
416	static void req_send (aio_req req)
417	{
418	while (started < wanted && nreqs >= started)
419	start_thread ();
420
421	nreqs++;
422
423	pthread_mutex_lock (&reqlock);
424
425	req->next = 0;
426
427	if (reqe)
428	{
429	reqe->next = req;
430	reqe = req;
431	}
432	else
433	reqe = reqs = req;
434
435	pthread_cond_signal (&reqwait);
436	pthread_mutex_unlock (&reqlock);
437
438	if (nreqs > max_outstanding)
439	for (;;)
440	{
441	poll_cb ();
442
443	if (nreqs <= max_outstanding)
444	break;
445
446	poll_wait ();
447	}
448	}
449
450	static void end_thread (void)
451	{
452	aio_req req;
453	Newz (0, req, 1, aio_cb);
454	req->type = REQ_QUIT;
455
456	req_send (req);
457	}
458
459	static void min_parallel (int nthreads)
460	{
461	if (wanted < nthreads)
462	wanted = nthreads;
463	}
464
465	static void max_parallel (int nthreads)
466	{
467	int cur = started;
468
469	if (wanted > nthreads)
470	wanted = nthreads;
471
472	while (cur > wanted)
473	{
474	end_thread ();
475	cur--;
476	}
477
478	while (started > wanted)
479	{
480	poll_wait ();
481	poll_cb ();
482	}
483	}	789	}
484		790
485	static void create_pipe ()	791	static void create_pipe ()
486	{	792	{
487	if (pipe (respipe))	793	if (pipe (respipe))
…		…
504	/*	810	/*
505	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
506	* normal read/write by using a mutex. slows down execution a lot,	812	* normal read/write by using a mutex. slows down execution a lot,
507	* but that's your problem, not mine.	813	* but that's your problem, not mine.
508	*/	814	*/
509	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
510		816
511	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
512	{	818	{
513	ssize_t res;	819	ssize_t res;
514	off_t ooffset;	820	off_t ooffset;
515		821
516	pthread_mutex_lock (&preadwritelock);	822	LOCK (preadwritelock);
517	ooffset = lseek (fd, 0, SEEK_CUR);	823	ooffset = lseek (fd, 0, SEEK_CUR);
518	lseek (fd, offset, SEEK_SET);	824	lseek (fd, offset, SEEK_SET);
519	res = read (fd, buf, count);	825	res = read (fd, buf, count);
520	lseek (fd, ooffset, SEEK_SET);	826	lseek (fd, ooffset, SEEK_SET);
521	pthread_mutex_unlock (&preadwritelock);	827	UNLOCK (preadwritelock);
522		828
523	return res;	829	return res;
524	}	830	}
525		831
526	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
527	{	833	{
528	ssize_t res;	834	ssize_t res;
529	off_t ooffset;	835	off_t ooffset;
530		836
531	pthread_mutex_lock (&preadwritelock);	837	LOCK (preadwritelock);
532	ooffset = lseek (fd, 0, SEEK_CUR);	838	ooffset = lseek (fd, 0, SEEK_CUR);
533	lseek (fd, offset, SEEK_SET);	839	lseek (fd, offset, SEEK_SET);
534	res = write (fd, buf, count);	840	res = write (fd, buf, count);
535	lseek (fd, offset, SEEK_SET);	841	lseek (fd, offset, SEEK_SET);
536	pthread_mutex_unlock (&preadwritelock);	842	UNLOCK (preadwritelock);
537		843
538	return res;	844	return res;
539	}	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
540	#endif	874	#endif
541		875
542	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
543	# define fdatasync fsync	877	# define fdatasync fsync
544	#endif	878	#endif
545		879
546	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
547	# define readahead aio_readahead	881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
548		882
549	static ssize_t readahead (int fd, off_t offset, size_t count)	883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
550	{	884	{
551	char readahead_buf[4096];	885	dBUF;
552		886
553	while (count > 0)	887	while (count > 0)
554	{	888	{
555	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
556		890
557	pread (fd, readahead_buf, len, offset);	891	pread (fd, aio_buf, len, offset);
558	offset += len;	892	offset += len;
559	count -= len;	893	count -= len;
560	}	894	}
561		895
562	errno = 0;	896	errno = 0;
563	}	897	}
		898
564	#endif	899	#endif
565		900
566	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
567	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
568		903
569	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
570		905
571	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
572	{	907	{
573	struct dirent *e;	908	struct dirent *e;
574	int errorno;	909	int errorno;
575		910
576	pthread_mutex_lock (&readdirlock);	911	LOCK (readdirlock);
577		912
578	e = readdir (dirp);	913	e = readdir (dirp);
579	errorno = errno;	914	errorno = errno;
580		915
581	if (e)	916	if (e)
…		…
584	strcpy (ent->d_name, e->d_name);	919	strcpy (ent->d_name, e->d_name);
585	}	920	}
586	else	921	else
587	*res = 0;	922	*res = 0;
588		923
589	pthread_mutex_unlock (&readdirlock);	924	UNLOCK (readdirlock);
590		925
591	errno = errorno;	926	errno = errorno;
592	return e ? 0 : -1;	927	return e ? 0 : -1;
593	}	928	}
594	#endif	929	#endif
595		930
596	/* sendfile always needs emulation */	931	/* sendfile always needs emulation */
597	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
598	{	933	{
599	ssize_t res;	934	ssize_t res;
600		935
601	if (!count)	936	if (!count)
602	return 0;	937	return 0;
…		…
613	{	948	{
614	off_t sbytes;	949	off_t sbytes;
615	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
616		951
617	if (res < 0 && sbytes)	952	if (res < 0 && sbytes)
618	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
619	res = sbytes;	954	res = sbytes;
620	}	955	}
621		956
622	# elif __hpux	957	# elif __hpux
623	res = sendfile (ofd, ifd, offset, count, 0, 0);	958	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
651	#endif	986	#endif
652	)	987	)
653	)	988	)
654	{	989	{
655	/* emulate sendfile. this is a major pain in the ass */	990	/* emulate sendfile. this is a major pain in the ass */
656	char buf[4096];	991	dBUF;
		992
657	res = 0;	993	res = 0;
658		994
659	while (count)	995	while (count)
660	{	996	{
661	ssize_t cnt;	997	ssize_t cnt;
662		998
663	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
664		1000
665	if (cnt <= 0)	1001	if (cnt <= 0)
666	{	1002	{
667	if (cnt && !res) res = -1;	1003	if (cnt && !res) res = -1;
668	break;	1004	break;
669	}	1005	}
670		1006
671	cnt = write (ofd, buf, cnt);	1007	cnt = write (ofd, aio_buf, cnt);
672		1008
673	if (cnt <= 0)	1009	if (cnt <= 0)
674	{	1010	{
675	if (cnt && !res) res = -1;	1011	if (cnt && !res) res = -1;
676	break;	1012	break;
…		…
684		1020
685	return res;	1021	return res;
686	}	1022	}
687		1023
688	/* read a full directory */	1024	/* read a full directory */
689	static int scandir_ (const char *path, void **namesp)	1025	static void scandir_ (aio_req req, worker *self)
690	{	1026	{
691	DIR *dirp = opendir (path);	1027	DIR *dirp;
692	union	1028	union
693	{	1029	{
694	struct dirent d;	1030	struct dirent d;
695	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696	} u;	1032	} *u;
697	struct dirent *entp;	1033	struct dirent *entp;
698	char *name, *names;	1034	char *name, *names;
699	int memlen = 4096;	1035	int memlen = 4096;
700	int memofs = 0;	1036	int memofs = 0;
701	int res = 0;	1037	int res = 0;
702	int errorno;	1038	int errorno;
703		1039
704	if (!dirp)	1040	LOCK (wrklock);
705	return -1;	1041	self->dirp = dirp = opendir (req->ptr1);
706		1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
707	names = malloc (memlen);	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);
708		1097
709	for (;;)	1098	for (;;)
710	{	1099	{
711	errno = 0, readdir_r (dirp, &u.d, &entp);	1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
712		1101
713	if (!entp)	1102	LOCK (reqlock);
714	break;
715
716	name = entp->d_name;
717
718	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
719	{
720	int len = strlen (name) + 1;
721
722	res++;
723
724	while (memofs + len > memlen)
725	{
726	memlen *= 2;
727	names = realloc (names, memlen);
728	if (!names)
729	break;
730	}
731
732	memcpy (names + memofs, name, len);
733	memofs += len;
734	}
735	}
736
737	errorno = errno;
738	closedir (dirp);
739
740	if (errorno)
741	{
742	free (names);
743	errno = errorno;
744	res = -1;
745	}
746
747	*namesp = (void *)names;
748	return res;
749	}
750
751	/*****************************************************************************/
752
753	static void *aio_proc (void *thr_arg)
754	{
755	aio_req req;
756	int type;
757
758	do
759	{
760	pthread_mutex_lock (&reqlock);
761		1103
762	for (;;)	1104	for (;;)
763	{	1105	{
764	req = reqs;	1106	self->req = req = reqq_shift (&req_queue);
765
766	if (reqs)
767	{
768	reqs = reqs->next;
769	if (!reqs) reqe = 0;
770	}
771		1107
772	if (req)	1108	if (req)
773	break;	1109	break;
774		1110
775	pthread_cond_wait (&reqwait, &reqlock);	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;
776	}	1132	}
777		1133
778	pthread_mutex_unlock (&reqlock);	1134	--nready;
		1135
		1136	UNLOCK (reqlock);
779		1137
780	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
781		1139
782	if (!req->cancelled)	1140	if (!(req->flags & FLAG_CANCELLED))
783	switch (req->type)	1141	switch (req->type)
784	{	1142	{
785	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
786	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	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;
787		1149
788	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
789	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
790		1152
791	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
792	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
793	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
794		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
795	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
796	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
797	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
798	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
799	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
800	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
801	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); 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;
802		1172
803	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
804	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
805	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
806		1176
807	case REQ_SLEEP:	1177	case REQ_BUSY:
808	{	1178	{
809	struct timeval tv;	1179	struct timeval tv;
810		1180
811	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
812	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
813		1183
814	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
815	}	1185	}
816		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
817	case REQ_QUIT:	1215	case REQ_QUIT:
818	break;	1216	goto quit;
819		1217
820	default:	1218	default:
821	req->result = ENOSYS;	1219	req->result = -1;
822	break;	1220	break;
823	}	1221	}
824		1222
825	req->errorno = errno;	1223	req->errorno = errno;
826		1224
827	pthread_mutex_lock (&reslock);	1225	LOCK (reslock);
828		1226
829	req->next = 0;	1227	++npending;
830		1228
831	if (rese)	1229	if (!reqq_push (&res_queue, req))
832	{	1230	{
833	rese->next = req;
834	rese = req;
835	}
836	else
837	{
838	rese = ress = req;
839
840	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
841	write (respipe [1], &respipe, 1);	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);
842	}	1237	}
843		1238
844	pthread_mutex_unlock (&reslock);	1239	self->req = 0;
		1240	worker_clear (self);
		1241
		1242	UNLOCK (reslock);
845	}	1243	}
846	while (type != REQ_QUIT);	1244
		1245	quit:
		1246	LOCK (wrklock);
		1247	worker_free (self);
		1248	UNLOCK (wrklock);
847		1249
848	return 0;	1250	return 0;
849	}	1251	}
850		1252
851	/*****************************************************************************/	1253	/*****************************************************************************/
852		1254
853	static void atfork_prepare (void)	1255	static void atfork_prepare (void)
854	{	1256	{
855	pthread_mutex_lock (&reqlock);	1257	LOCK (wrklock);
856	pthread_mutex_lock (&reslock);	1258	LOCK (reqlock);
		1259	LOCK (reslock);
857	#if !HAVE_PREADWRITE	1260	#if !HAVE_PREADWRITE
858	pthread_mutex_lock (&preadwritelock);	1261	LOCK (preadwritelock);
859	#endif	1262	#endif
860	#if !HAVE_READDIR_R	1263	#if !HAVE_READDIR_R
861	pthread_mutex_lock (&readdirlock);	1264	LOCK (readdirlock);
862	#endif	1265	#endif
863	}	1266	}
864		1267
865	static void atfork_parent (void)	1268	static void atfork_parent (void)
866	{	1269	{
867	#if !HAVE_READDIR_R	1270	#if !HAVE_READDIR_R
868	pthread_mutex_unlock (&readdirlock);	1271	UNLOCK (readdirlock);
869	#endif	1272	#endif
870	#if !HAVE_PREADWRITE	1273	#if !HAVE_PREADWRITE
871	pthread_mutex_unlock (&preadwritelock);	1274	UNLOCK (preadwritelock);
872	#endif	1275	#endif
873	pthread_mutex_unlock (&reslock);	1276	UNLOCK (reslock);
874	pthread_mutex_unlock (&reqlock);	1277	UNLOCK (reqlock);
		1278	UNLOCK (wrklock);
875	}	1279	}
876		1280
877	static void atfork_child (void)	1281	static void atfork_child (void)
878	{	1282	{
879	aio_req prv;	1283	aio_req prv;
880		1284
881	started = 0;	1285	while (prv = reqq_shift (&req_queue))
		1286	req_destroy (prv);
882		1287
883	while (reqs)	1288	while (prv = reqq_shift (&res_queue))
		1289	req_destroy (prv);
		1290
		1291	while (wrk_first.next != &wrk_first)
884	{	1292	{
885	prv = reqs;	1293	worker *wrk = wrk_first.next;
886	reqs = prv->next;	1294
		1295	if (wrk->req)
		1296	req_destroy (wrk->req);
		1297
		1298	worker_clear (wrk);
887	req_free (prv);	1299	worker_free (wrk);
888	}	1300	}
889		1301
890	reqs = reqe = 0;	1302	started = 0;
891		1303	idle = 0;
892	while (ress)	1304	nreqs = 0;
893	{	1305	nready = 0;
894	prv = ress;	1306	npending = 0;
895	ress = prv->next;
896	req_free (prv);
897	}
898
899	ress = rese = 0;
900		1307
901	close (respipe [0]);	1308	close (respipe [0]);
902	close (respipe [1]);	1309	close (respipe [1]);
903	create_pipe ();	1310	create_pipe ();
904		1311
905	atfork_parent ();	1312	atfork_parent ();
906	}	1313	}
907		1314
908	#define dREQ \	1315	#define dREQ \
909	aio_req req; \	1316	aio_req req; \
		1317	int req_pri = next_pri; \
		1318	next_pri = DEFAULT_PRI + PRI_BIAS; \
910	\	1319	\
911	if (SvOK (callback) && !SvROK (callback)) \	1320	if (SvOK (callback) && !SvROK (callback)) \
912	croak ("callback must be undef or of reference type"); \	1321	croak ("callback must be undef or of reference type"); \
913	\	1322	\
914	Newz (0, req, 1, aio_cb); \	1323	Newz (0, req, 1, aio_cb); \
915	if (!req) \	1324	if (!req) \
916	croak ("out of memory during aio_req allocation"); \	1325	croak ("out of memory during aio_req allocation"); \
917	\	1326	\
918	req->callback = newSVsv (callback)	1327	req->callback = newSVsv (callback); \
		1328	req->pri = req_pri
919		1329
920	#define REQ_SEND \	1330	#define REQ_SEND \
921	req_send (req); \	1331	req_send (req); \
922	\	1332	\
923	if (GIMME_V != G_VOID) \	1333	if (GIMME_V != G_VOID) \
…		…
928	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
929		1339
930	BOOT:	1340	BOOT:
931	{	1341	{
932	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
933	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
936		1351
937	create_pipe ();	1352	create_pipe ();
938	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
939	}	1354	}
940		1355
941	void	1356	void
942	min_parallel (nthreads)	1357	max_poll_reqs (int nreqs)
943	int nthreads
944	PROTOTYPE: $	1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
945		1361
946	void	1362	void
947	max_parallel (nthreads)	1363	max_poll_time (double nseconds)
948	int nthreads
949	PROTOTYPE: $	1364	PROTOTYPE: $
		1365	CODE:
		1366	max_poll_time = nseconds * AIO_TICKS;
		1367
		1368	void
		1369	min_parallel (int nthreads)
		1370	PROTOTYPE: $
		1371
		1372	void
		1373	max_parallel (int nthreads)
		1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
950		1381
951	int	1382	int
952	max_outstanding (nreqs)	1383	max_outstanding (int maxreqs)
953	int nreqs	1384	PROTOTYPE: $
954	PROTOTYPE: $
955	CODE:	1385	CODE:
956	RETVAL = max_outstanding;	1386	RETVAL = max_outstanding;
957	max_outstanding = nreqs;	1387	max_outstanding = maxreqs;
		1388	OUTPUT:
		1389	RETVAL
958		1390
959	void	1391	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
961	SV * pathname
962	int flags
963	int mode
964	SV * callback
965	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
966	PPCODE:	1394	PPCODE:
967	{	1395	{
968	dREQ;	1396	dREQ;
969		1397
970	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
971	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
972	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
973	req->fd = flags;	1401	req->int1 = flags;
974	req->mode = mode;	1402	req->mode = mode;
975		1403
976	REQ_SEND;	1404	REQ_SEND;
977	}	1405	}
978		1406
979	void	1407	void
980	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
981	SV * fh
982	SV * callback
983	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
984	ALIAS:	1410	ALIAS:
985	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
986	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
987	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
988	PPCODE:	1414	PPCODE:
989	{	1415	{
990	dREQ;	1416	dREQ;
991		1417
992	req->type = ix;	1418	req->type = ix;
993	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
995		1421
996	REQ_SEND (req);	1422	REQ_SEND (req);
997	}	1423	}
998		1424
999	void	1425	void
1000	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1001	SV * fh
1002	UV offset
1003	UV length
1004	SV * data
1005	UV dataoffset
1006	SV * callback
1007	ALIAS:	1427	ALIAS:
1008	aio_read = REQ_READ	1428	aio_read = REQ_READ
1009	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1010	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1011	PPCODE:	1431	PPCODE:
1012	{	1432	{
1013	aio_req req;
1014	STRLEN svlen;	1433	STRLEN svlen;
1015	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
1016		1435
1017	SvUPGRADE (data, SVt_PV);	1436	SvUPGRADE (data, SVt_PV);
1018	SvPOK_on (data);	1437	SvPOK_on (data);
…		…
1030	length = svlen - dataoffset;	1449	length = svlen - dataoffset;
1031	}	1450	}
1032	else	1451	else
1033	{	1452	{
1034	/* read: grow scalar as necessary */	1453	/* read: grow scalar as necessary */
1035	svptr = SvGROW (data, length + dataoffset);	1454	svptr = SvGROW (data, length + dataoffset + 1);
1036	}	1455	}
1037		1456
1038	if (length < 0)	1457	if (length < 0)
1039	croak ("length must not be negative");	1458	croak ("length must not be negative");
1040		1459
1041	{	1460	{
1042	dREQ;	1461	dREQ;
1043		1462
1044	req->type = ix;	1463	req->type = ix;
1045	req->fh = newSVsv (fh);	1464	req->sv1 = newSVsv (fh);
1046	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1047	: IoOFP (sv_2io (fh)));	1466	: IoOFP (sv_2io (fh)));
1048	req->offset = offset;	1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1049	req->length = length;	1468	req->size = length;
1050	req->data = SvREFCNT_inc (data);	1469	req->sv2 = SvREFCNT_inc (data);
1051	req->dataptr = (char *)svptr + dataoffset;	1470	req->ptr1 = (char *)svptr + dataoffset;
		1471	req->stroffset = dataoffset;
1052		1472
1053	if (!SvREADONLY (data))	1473	if (!SvREADONLY (data))
1054	{	1474	{
1055	SvREADONLY_on (data);	1475	SvREADONLY_on (data);
1056	req->data2ptr = (void *)data;	1476	req->flags |= FLAG_SV2_RO_OFF;
1057	}	1477	}
1058		1478
1059	REQ_SEND;	1479	REQ_SEND;
1060	}	1480	}
1061	}	1481	}
1062		1482
1063	void	1483	void
		1484	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1485	PROTOTYPE: $$;$
		1486	PPCODE:
		1487	{
		1488	SV *data;
		1489	dREQ;
		1490
		1491	data = newSV (NAME_MAX);
		1492	SvPOK_on (data);
		1493
		1494	req->type = REQ_READLINK;
		1495	req->sv1 = newSVsv (path);
		1496	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1497	req->sv2 = data;
		1498	req->ptr1 = SvPVbyte_nolen (data);
		1499
		1500	REQ_SEND;
		1501	}
		1502
		1503	void
1064	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1065	SV * out_fh
1066	SV * in_fh
1067	UV in_offset
1068	UV length
1069	SV * callback
1070	PROTOTYPE: $$$$;$	1505	PROTOTYPE: $$$$;$
1071	PPCODE:	1506	PPCODE:
1072	{	1507	{
1073	dREQ;	1508	dREQ;
1074		1509
1075	req->type = REQ_SENDFILE;	1510	req->type = REQ_SENDFILE;
1076	req->fh = newSVsv (out_fh);	1511	req->sv1 = newSVsv (out_fh);
1077	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1078	req->fh2 = newSVsv (in_fh);	1513	req->sv2 = newSVsv (in_fh);
1079	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1080	req->offset = in_offset;	1515	req->offs = SvVAL64 (in_offset);
1081	req->length = length;	1516	req->size = length;
1082		1517
1083	REQ_SEND;	1518	REQ_SEND;
1084	}	1519	}
1085		1520
1086	void	1521	void
1087	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1088	SV * fh
1089	UV offset
1090	IV length
1091	SV * callback
1092	PROTOTYPE: $$$;$	1523	PROTOTYPE: $$$;$
1093	PPCODE:	1524	PPCODE:
1094	{	1525	{
1095	dREQ;	1526	dREQ;
1096		1527
1097	req->type = REQ_READAHEAD;	1528	req->type = REQ_READAHEAD;
1098	req->fh = newSVsv (fh);	1529	req->sv1 = newSVsv (fh);
1099	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1100	req->offset = offset;	1531	req->offs = SvVAL64 (offset);
1101	req->length = length;	1532	req->size = length;
1102		1533
1103	REQ_SEND;	1534	REQ_SEND;
1104	}	1535	}
1105		1536
1106	void	1537	void
1107	aio_stat (fh_or_path,callback=&PL_sv_undef)	1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1108	SV * fh_or_path
1109	SV * callback
1110	ALIAS:	1539	ALIAS:
1111	aio_stat = REQ_STAT	1540	aio_stat = REQ_STAT
1112	aio_lstat = REQ_LSTAT	1541	aio_lstat = REQ_LSTAT
1113	PPCODE:	1542	PPCODE:
1114	{	1543	{
1115	dREQ;	1544	dREQ;
1116		1545
1117	New (0, req->statdata, 1, Stat_t);	1546	req->ptr2 = malloc (sizeof (Stat_t));
1118	if (!req->statdata)	1547	if (!req->ptr2)
1119	{	1548	{
1120	req_free (req);	1549	req_destroy (req);
1121	croak ("out of memory during aio_req->statdata allocation");	1550	croak ("out of memory during aio_stat statdata allocation");
1122	}	1551	}
		1552
		1553	req->flags |= FLAG_PTR2_FREE;
		1554	req->sv1 = newSVsv (fh_or_path);
1123		1555
1124	if (SvPOK (fh_or_path))	1556	if (SvPOK (fh_or_path))
1125	{	1557	{
1126	req->type = ix;	1558	req->type = ix;
1127	req->data = newSVsv (fh_or_path);
1128	req->dataptr = SvPVbyte_nolen (req->data);	1559	req->ptr1 = SvPVbyte_nolen (req->sv1);
1129	}	1560	}
1130	else	1561	else
1131	{	1562	{
1132	req->type = REQ_FSTAT;	1563	req->type = REQ_FSTAT;
1133	req->fh = newSVsv (fh_or_path);
1134	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1135	}	1565	}
1136		1566
1137	REQ_SEND;	1567	REQ_SEND;
1138	}	1568	}
1139		1569
1140	void	1570	void
		1571	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1578	req->sv1 = newSVsv (fh_or_path);
		1579
		1580	if (SvPOK (fh_or_path))
		1581	{
		1582	req->type = REQ_UTIME;
		1583	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1584	}
		1585	else
		1586	{
		1587	req->type = REQ_FUTIME;
		1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1589	}
		1590
		1591	REQ_SEND;
		1592	}
		1593
		1594	void
		1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1596	PPCODE:
		1597	{
		1598	dREQ;
		1599
		1600	req->mode = mode;
		1601	req->sv1 = newSVsv (fh_or_path);
		1602
		1603	if (SvPOK (fh_or_path))
		1604	{
		1605	req->type = REQ_CHMOD;
		1606	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1607	}
		1608	else
		1609	{
		1610	req->type = REQ_FCHMOD;
		1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1612	}
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1619	PPCODE:
		1620	{
		1621	dREQ;
		1622
		1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1625	req->sv1 = newSVsv (fh_or_path);
		1626
		1627	if (SvPOK (fh_or_path))
		1628	{
		1629	req->type = REQ_CHOWN;
		1630	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1631	}
		1632	else
		1633	{
		1634	req->type = REQ_FCHOWN;
		1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1636	}
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
1141	aio_unlink (pathname,callback=&PL_sv_undef)	1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1142	SV * pathname
1143	SV * callback
1144	ALIAS:	1643	ALIAS:
1145	aio_unlink = REQ_UNLINK	1644	aio_unlink = REQ_UNLINK
1146	aio_rmdir = REQ_RMDIR	1645	aio_rmdir = REQ_RMDIR
1147	aio_readdir = REQ_READDIR	1646	aio_readdir = REQ_READDIR
1148	PPCODE:	1647	PPCODE:
1149	{	1648	{
1150	dREQ;	1649	dREQ;
1151		1650
1152	req->type = ix;	1651	req->type = ix;
1153	req->data = newSVsv (pathname);	1652	req->sv1 = newSVsv (pathname);
1154	req->dataptr = SvPVbyte_nolen (req->data);	1653	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1654
		1655	REQ_SEND;
		1656	}
		1657
		1658	void
		1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1660	PPCODE:
		1661	{
		1662	dREQ;
1155		1663
		1664	req->type = REQ_MKDIR;
		1665	req->sv1 = newSVsv (pathname);
		1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1667	req->mode = mode;
		1668
1156	REQ_SEND;	1669	REQ_SEND;
1157	}	1670	}
1158		1671
1159	void	1672	void
1160	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1161	SV * oldpath
1162	SV * newpath
1163	SV * callback
1164	ALIAS:	1674	ALIAS:
1165	aio_link = REQ_LINK	1675	aio_link = REQ_LINK
1166	aio_symlink = REQ_SYMLINK	1676	aio_symlink = REQ_SYMLINK
1167	aio_rename = REQ_RENAME	1677	aio_rename = REQ_RENAME
1168	PPCODE:	1678	PPCODE:
1169	{	1679	{
1170	dREQ;	1680	dREQ;
1171		1681
1172	req->type = ix;	1682	req->type = ix;
1173	req->fh = newSVsv (oldpath);	1683	req->sv2 = newSVsv (oldpath);
1174	req->data2ptr = SvPVbyte_nolen (req->fh);	1684	req->ptr2 = SvPVbyte_nolen (req->sv2);
1175	req->data = newSVsv (newpath);	1685	req->sv1 = newSVsv (newpath);
1176	req->dataptr = SvPVbyte_nolen (req->data);	1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1177		1687
1178	REQ_SEND;	1688	REQ_SEND;
1179	}	1689	}
1180		1690
1181	void	1691	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1183	double delay
1184	SV * callback
1185	PPCODE:	1693	PPCODE:
1186	{	1694	{
1187	dREQ;	1695	dREQ;
1188		1696
1189	req->type = REQ_SLEEP;	1697	req->type = REQ_MKNOD;
1190	req->fd = delay < 0. ? 0 : delay;	1698	req->sv1 = newSVsv (pathname);
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1699	req->ptr1 = SvPVbyte_nolen (req->sv1);
1192		1700	req->mode = (mode_t)mode;
		1701	req->offs = dev;
		1702
1193	REQ_SEND;	1703	REQ_SEND;
1194	}	1704	}
1195		1705
1196	void	1706	void
		1707	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
		1711
		1712	req->type = REQ_BUSY;
		1713	req->nv1 = delay < 0. ? 0. : delay;
		1714
		1715	REQ_SEND;
		1716	}
		1717
		1718	void
1197	aio_group (callback=&PL_sv_undef)	1719	aio_group (SV *callback=&PL_sv_undef)
1198	SV * callback
1199	PROTOTYPE: ;$	1720	PROTOTYPE: ;$
1200	PPCODE:	1721	PPCODE:
1201	{	1722	{
1202	dREQ;	1723	dREQ;
		1724
1203	req->type = REQ_GROUP;	1725	req->type = REQ_GROUP;
		1726
1204	req_send (req);	1727	req_send (req);
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1206	}	1729	}
		1730
		1731	void
		1732	aio_nop (SV *callback=&PL_sv_undef)
		1733	PPCODE:
		1734	{
		1735	dREQ;
		1736
		1737	req->type = REQ_NOP;
		1738
		1739	REQ_SEND;
		1740	}
		1741
		1742	int
		1743	aioreq_pri (int pri = 0)
		1744	PROTOTYPE: ;$
		1745	CODE:
		1746	RETVAL = next_pri - PRI_BIAS;
		1747	if (items > 0)
		1748	{
		1749	if (pri < PRI_MIN) pri = PRI_MIN;
		1750	if (pri > PRI_MAX) pri = PRI_MAX;
		1751	next_pri = pri + PRI_BIAS;
		1752	}
		1753	OUTPUT:
		1754	RETVAL
		1755
		1756	void
		1757	aioreq_nice (int nice = 0)
		1758	CODE:
		1759	nice = next_pri - nice;
		1760	if (nice < PRI_MIN) nice = PRI_MIN;
		1761	if (nice > PRI_MAX) nice = PRI_MAX;
		1762	next_pri = nice + PRI_BIAS;
1207		1763
1208	void	1764	void
1209	flush ()	1765	flush ()
1210	PROTOTYPE:	1766	PROTOTYPE:
1211	CODE:	1767	CODE:
…		…
1213	{	1769	{
1214	poll_wait ();	1770	poll_wait ();
1215	poll_cb ();	1771	poll_cb ();
1216	}	1772	}
1217		1773
1218	void	1774	int
1219	poll()	1775	poll()
1220	PROTOTYPE:	1776	PROTOTYPE:
1221	CODE:	1777	CODE:
1222	if (nreqs)
1223	{
1224	poll_wait ();	1778	poll_wait ();
1225	poll_cb ();	1779	RETVAL = poll_cb ();
1226	}	1780	OUTPUT:
		1781	RETVAL
1227		1782
1228	int	1783	int
1229	poll_fileno()	1784	poll_fileno()
1230	PROTOTYPE:	1785	PROTOTYPE:
1231	CODE:	1786	CODE:
…		…
1243		1798
1244	void	1799	void
1245	poll_wait()	1800	poll_wait()
1246	PROTOTYPE:	1801	PROTOTYPE:
1247	CODE:	1802	CODE:
1248	if (nreqs)
1249	poll_wait ();	1803	poll_wait ();
		1804
		1805	void
		1806	setsig (int signum = SIGIO)
		1807	PROTOTYPE: ;$
		1808	CODE:
		1809	{
		1810	if (block_sig_level)
		1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1812
		1813	LOCK (reslock);
		1814	main_tid = pthread_self ();
		1815	main_sig = signum;
		1816	UNLOCK (reslock);
		1817
		1818	if (main_sig && npending)
		1819	pthread_kill (main_tid, main_sig);
		1820	}
		1821
		1822	void
		1823	aio_block (SV *cb)
		1824	PROTOTYPE: &
		1825	PPCODE:
		1826	{
		1827	int count;
		1828
		1829	block_sig ();
		1830	PUSHMARK (SP);
		1831	PUTBACK;
		1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1833	SPAGAIN;
		1834	unblock_sig ();
		1835
		1836	if (SvTRUE (ERRSV))
		1837	croak (0);
		1838
		1839	XSRETURN (count);
		1840	}
1250		1841
1251	int	1842	int
1252	nreqs()	1843	nreqs()
1253	PROTOTYPE:	1844	PROTOTYPE:
1254	CODE:	1845	CODE:
1255	RETVAL = nreqs;	1846	RETVAL = nreqs;
1256	OUTPUT:	1847	OUTPUT:
1257	RETVAL	1848	RETVAL
1258		1849
1259	PROTOTYPES: DISABLE	1850	int
1260		1851	nready()
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262
1263	void
1264	cancel (aio_req_ornot req)
1265	PROTOTYPE:	1852	PROTOTYPE:
1266	CODE:	1853	CODE:
		1854	RETVAL = get_nready ();
		1855	OUTPUT:
		1856	RETVAL
		1857
		1858	int
		1859	npending()
		1860	PROTOTYPE:
		1861	CODE:
		1862	RETVAL = get_npending ();
		1863	OUTPUT:
		1864	RETVAL
		1865
		1866	int
		1867	nthreads()
		1868	PROTOTYPE:
		1869	CODE:
		1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1871	RETVAL = started;
		1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	PROTOTYPES: DISABLE
		1877
		1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1879
		1880	void
		1881	cancel (aio_req_ornot req)
		1882	CODE:
1267	req_cancel (req);	1883	req_cancel (req);
		1884
		1885	void
		1886	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1887	CODE:
		1888	SvREFCNT_dec (req->callback);
		1889	req->callback = newSVsv (callback);
1268		1890
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1891	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		1892
1271	void	1893	void
1272	add (aio_req grp, ...)	1894	add (aio_req grp, ...)
1273	PPCODE:	1895	PPCODE:
1274	{	1896	{
1275	int i;	1897	int i;
		1898	aio_req req;
1276		1899
		1900	if (main_sig && !block_sig_level)
		1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1902
1277	if (grp->fd == 2)	1903	if (grp->int1 == 2)
1278	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279		1905
1280	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1281	{	1907	{
1282	if (GIMME_V != G_VOID)	1908	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1909	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		1910
1285	aio_req req = SvAIO_REQ (ST (i));	1911	req = SvAIO_REQ (ST (i));
1286		1912
1287	if (req)	1913	if (req)
1288	{	1914	{
1289	++grp->length;	1915	++grp->size;
1290	req->grp = grp;	1916	req->grp = grp;
1291		1917
1292	req->grp_prev = 0;	1918	req->grp_prev = 0;
1293	req->grp_next = grp->grp_first;	1919	req->grp_next = grp->grp_first;
1294		1920
…		…
1299	}	1925	}
1300	}	1926	}
1301	}	1927	}
1302		1928
1303	void	1929	void
		1930	cancel_subs (aio_req_ornot req)
		1931	CODE:
		1932	req_cancel_subs (req);
		1933
		1934	void
1304	result (aio_req grp, ...)	1935	result (aio_req grp, ...)
		1936	CODE:
		1937	{
		1938	int i;
		1939	AV *av;
		1940
		1941	grp->errorno = errno;
		1942
		1943	av = newAV ();
		1944
		1945	for (i = 1; i < items; ++i )
		1946	av_push (av, newSVsv (ST (i)));
		1947
		1948	SvREFCNT_dec (grp->sv1);
		1949	grp->sv1 = (SV *)av;
		1950	}
		1951
		1952	void
		1953	errno (aio_req grp, int errorno = errno)
		1954	CODE:
		1955	grp->errorno = errorno;
		1956
		1957	void
		1958	limit (aio_req grp, int limit)
1305	CODE:	1959	CODE:
1306	{	1960	grp->int2 = limit;
1307	int i;	1961	aio_grp_feed (grp);
1308	AV *av = newAV ();
1309		1962
1310	for (i = 1; i < items; ++i )
1311	av_push (av, newSVsv (ST (i)));
1312
1313	SvREFCNT_dec (grp->data);
1314	grp->data = (SV *)av;
1315	}
1316
1317	void	1963	void
1318	feeder_limit (aio_req grp, int limit)	1964	feed (aio_req grp, SV *callback=&PL_sv_undef)
1319	CODE:	1965	CODE:
1320	grp->fd2 = limit;	1966	{
		1967	SvREFCNT_dec (grp->sv2);
		1968	grp->sv2 = newSVsv (callback);
		1969
		1970	if (grp->int2 <= 0)
		1971	grp->int2 = 2;
		1972
1321	aio_grp_feed (grp);	1973	aio_grp_feed (grp);
1322
1323	void
1324	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1325	CODE:
1326	{
1327	SvREFCNT_dec (grp->fh2);
1328	grp->fh2 = newSVsv (callback);
1329
1330	if (grp->fd2 <= 0)
1331	grp->fd2 = 2;
1332
1333	aio_grp_feed (grp);
1334	}	1974	}
1335		1975

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