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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs.
Revision 1.102 by root, Sun Jun 3 09:44:17 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 *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
72		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
73	SV *self; /* the perl counterpart of this request, if any */	109	SV *self; /* the perl counterpart of this request, if any */
74		110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
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	{
		335	if (!req->self)
		336	{
111	req->self = (SV *)newHV ();	337	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		339	}
113		340
114	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)));
115	}	342	}
116		343
117	static aio_req SvAIO_REQ (SV *sv)	344	static aio_req SvAIO_REQ (SV *sv)
118	{	345	{
		346	MAGIC *mg;
		347
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	349	croak ("object of class " AIO_REQ_KLASS " expected");
121		350
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		352
124	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	354	}
126		355
127	static void poll_wait ()	356	static void aio_grp_feed (aio_req grp)
128	{	357	{
129	if (nreqs && !ress)	358	block_sig ();
		359
		360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
130	{	361	{
131	fd_set rfd;	362	int old_len = grp->size;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		363
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	364	if (grp->sv2 && SvOK (grp->sv2))
		365	{
		366	dSP;
		367
		368	ENTER;
		369	SAVETMPS;
		370	PUSHMARK (SP);
		371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		372	PUTBACK;
		373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		374	SPAGAIN;
		375	FREETMPS;
		376	LEAVE;
		377	}
		378
		379	/* stop if no progress has been made */
		380	if (old_len == grp->size)
		381	{
		382	SvREFCNT_dec (grp->sv2);
		383	grp->sv2 = 0;
		384	break;
		385	}
136	}	386	}
137	}
138		387
		388	unblock_sig ();
		389	}
		390
		391	static void aio_grp_dec (aio_req grp)
		392	{
		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)
		400	{
		401	block_sig ();
		402
		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 ();
		412	}
		413	}
		414
139	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
140	{	416	{
141	dSP;	417	dSP;
142	int errorno = errno;
143		418
144	if (req->cancelled || !SvOK (req->callback))	419	if (req->flags & FLAG_SV2_RO_OFF)
145	return;	420	SvREADONLY_off (req->sv2);
146		421
147	errno = req->errorno;	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	423	{
154	case REQ_READDIR:	424	ENTER;
		425	SAVETMPS;
		426	PUSHMARK (SP);
		427	EXTEND (SP, 1);
		428
		429	switch (req->type)
155	{	430	{
156	SV *rv = &PL_sv_undef;	431	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	432	{
160	char *buf = req->data2ptr;	433	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		434
163	while (req->result)	435	if (req->result >= 0)
164	{	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	{
165	SV *sv = newSVpv (buf, 0);	445	SV *sv = newSVpv (buf, 0);
166		446
167	av_push (av, sv);	447	av_store (av, i, sv);
168	buf += SvCUR (sv) + 1;	448	buf += SvCUR (sv) + 1;
169	req->result--;	449	}
		450
		451	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	452	}
171		453
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	454	PUSHs (rv);
173	}	455	}
		456	break;
174		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);
175	XPUSHs (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;
176	}	519	}
177	break;
178		520
179	case REQ_OPEN:	521	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		522
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	523	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
187	SPAGAIN;	525	SPAGAIN;
188		526
189	fh = SvREFCNT_inc (POPs);	527	FREETMPS;
190		528	LEAVE;
191	PUSHMARK (SP);
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	529	}
204		530
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}
220
221	static void req_free (aio_req req)
222	{
223	if (req->grp)	531	if (req->grp)
224	{	532	{
225	aio_req grp = req->grp;	533	aio_req grp = req->grp;
226		534
227	/* unlink request */	535	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;	536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;	537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
230		538
231	if (grp->grp_next == grp && grp->fd)	539	if (grp->grp_first == req)
232	{	540	grp->grp_first = req->grp_next;
233	req_invoke (grp);	541
234	req_free (grp);	542	aio_grp_dec (grp);
235	}
236	}	543	}
237		544
		545	return !SvTRUE (ERRSV);
		546	}
		547
		548	static void req_destroy (aio_req req)
		549	{
238	if (req->self)	550	if (req->self)
239	{	551	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
242	}	554	}
243		555
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
258		559
259	if (req->type == REQ_READDIR && req->result >= 0)	560	if (req->flags & FLAG_PTR2_FREE)
260	free (req->data2ptr);	561	free (req->ptr2);
261		562
262	Safefree (req);	563	Safefree (req);
263	}	564	}
264		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
265	static void req_cancel (aio_req req)	580	static void req_cancel (aio_req req)
266	{	581	{
267	req->cancelled = 1;	582	req->flags |= FLAG_CANCELLED;
268		583
269	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))
270	{	599	{
271	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);
272		608
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	609	UNLOCK (wrklock);
274	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);
275	}	702	}
276	}	703	}
277		704
278	static int poll_cb ()	705	static int poll_cb ()
279	{	706	{
280	dSP;	707	dSP;
281	int count = 0;	708	int count = 0;
		709	int maxreqs = max_poll_reqs;
282	int do_croak = 0;	710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
283	aio_req req;	712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
284		718
285	for (;;)	719	for (;;)
286	{	720	{
287	pthread_mutex_lock (&reslock);	721	for (;;)
288	req = ress;
289
290	if (req)
291	{	722	{
292	ress = req->next;	723	maybe_start_thread ();
293		724
		725	LOCK (reslock);
		726	req = reqq_shift (&res_queue);
		727
294	if (!ress)	728	if (req)
295	{	729	{
		730	--npending;
		731
		732	if (!res_queue.size)
		733	{
296	/* read any signals sent by the worker threads */	734	/* read any signals sent by the worker threads */
297	char buf [32];	735	char buf [4];
298	while (read (respipe [0], buf, 32) == 32)	736	while (read (respipe [0], buf, 4) == 4)
		737	;
299	;	738	}
		739	}
300		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)
301	rese = 0;	775	break;
302	}	776	}
303	}	777	}
304		778
305	pthread_mutex_unlock (&reslock);	779	if (nreqs <= max_outstanding)
306
307	if (!req)
308	break;	780	break;
309		781
310	nreqs--;	782	poll_wait ();
311		783
312	if (req->type == REQ_QUIT)	784	++maxreqs;
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{
316	req->fd = 1; /* mark request as delayed */
317	continue;
318	}
319	else
320	{
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	785	}
341		786
		787	unblock_sig ();
342	return count;	788	return count;
343	}
344
345	static void *aio_proc(void *arg);
346
347	static void start_thread (void)
348	{
349	sigset_t fullsigset, oldsigset;
350	pthread_t tid;
351	pthread_attr_t attr;
352
353	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357	sigfillset (&fullsigset);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361	started++;
362
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
364	}
365
366	static void req_send (aio_req req)
367	{
368	while (started < wanted && nreqs >= started)
369	start_thread ();
370
371	nreqs++;
372
373	pthread_mutex_lock (&reqlock);
374
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}
399
400	static void end_thread (void)
401	{
402	aio_req req;
403	Newz (0, req, 1, aio_cb);
404	req->type = REQ_QUIT;
405
406	req_send (req);
407	}
408
409	static void min_parallel (int nthreads)
410	{
411	if (wanted < nthreads)
412	wanted = nthreads;
413	}
414
415	static void max_parallel (int nthreads)
416	{
417	int cur = started;
418
419	if (wanted > nthreads)
420	wanted = nthreads;
421
422	while (cur > wanted)
423	{
424	end_thread ();
425	cur--;
426	}
427
428	while (started > wanted)
429	{
430	poll_wait ();
431	poll_cb ();
432	}
433	}	789	}
434		790
435	static void create_pipe ()	791	static void create_pipe ()
436	{	792	{
437	if (pipe (respipe))	793	if (pipe (respipe))
…		…
454	/*	810	/*
455	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
456	* 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,
457	* but that's your problem, not mine.	813	* but that's your problem, not mine.
458	*/	814	*/
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
460		816
461	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)
462	{	818	{
463	ssize_t res;	819	ssize_t res;
464	off_t ooffset;	820	off_t ooffset;
465		821
466	pthread_mutex_lock (&preadwritelock);	822	LOCK (preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);	823	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);	824	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);	825	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);	826	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);	827	UNLOCK (preadwritelock);
472		828
473	return res;	829	return res;
474	}	830	}
475		831
476	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)
477	{	833	{
478	ssize_t res;	834	ssize_t res;
479	off_t ooffset;	835	off_t ooffset;
480		836
481	pthread_mutex_lock (&preadwritelock);	837	LOCK (preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);	838	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);	839	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);	840	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);	841	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);	842	UNLOCK (preadwritelock);
487		843
488	return res;	844	return res;
489	}	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
490	#endif	874	#endif
491		875
492	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
493	# define fdatasync fsync	877	# define fdatasync fsync
494	#endif	878	#endif
495		879
496	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
498		882
499	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)
500	{	884	{
501	char readahead_buf[4096];	885	dBUF;
502		886
503	while (count > 0)	887	while (count > 0)
504	{	888	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
506		890
507	pread (fd, readahead_buf, len, offset);	891	pread (fd, aio_buf, len, offset);
508	offset += len;	892	offset += len;
509	count -= len;	893	count -= len;
510	}	894	}
511		895
512	errno = 0;	896	errno = 0;
513	}	897	}
		898
514	#endif	899	#endif
515		900
516	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
518		903
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
520		905
521	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)
522	{	907	{
523	struct dirent *e;	908	struct dirent *e;
524	int errorno;	909	int errorno;
525		910
526	pthread_mutex_lock (&readdirlock);	911	LOCK (readdirlock);
527		912
528	e = readdir (dirp);	913	e = readdir (dirp);
529	errorno = errno;	914	errorno = errno;
530		915
531	if (e)	916	if (e)
…		…
534	strcpy (ent->d_name, e->d_name);	919	strcpy (ent->d_name, e->d_name);
535	}	920	}
536	else	921	else
537	*res = 0;	922	*res = 0;
538		923
539	pthread_mutex_unlock (&readdirlock);	924	UNLOCK (readdirlock);
540		925
541	errno = errorno;	926	errno = errorno;
542	return e ? 0 : -1;	927	return e ? 0 : -1;
543	}	928	}
544	#endif	929	#endif
545		930
546	/* sendfile always needs emulation */	931	/* sendfile always needs emulation */
547	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)
548	{	933	{
549	ssize_t res;	934	ssize_t res;
550		935
551	if (!count)	936	if (!count)
552	return 0;	937	return 0;
…		…
563	{	948	{
564	off_t sbytes;	949	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566		951
567	if (res < 0 && sbytes)	952	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
569	res = sbytes;	954	res = sbytes;
570	}	955	}
571		956
572	# elif __hpux	957	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);	958	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
601	#endif	986	#endif
602	)	987	)
603	)	988	)
604	{	989	{
605	/* emulate sendfile. this is a major pain in the ass */	990	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	991	dBUF;
		992
607	res = 0;	993	res = 0;
608		994
609	while (count)	995	while (count)
610	{	996	{
611	ssize_t cnt;	997	ssize_t cnt;
612		998
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		1000
615	if (cnt <= 0)	1001	if (cnt <= 0)
616	{	1002	{
617	if (cnt && !res) res = -1;	1003	if (cnt && !res) res = -1;
618	break;	1004	break;
619	}	1005	}
620		1006
621	cnt = write (ofd, buf, cnt);	1007	cnt = write (ofd, aio_buf, cnt);
622		1008
623	if (cnt <= 0)	1009	if (cnt <= 0)
624	{	1010	{
625	if (cnt && !res) res = -1;	1011	if (cnt && !res) res = -1;
626	break;	1012	break;
…		…
634		1020
635	return res;	1021	return res;
636	}	1022	}
637		1023
638	/* read a full directory */	1024	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)	1025	static void scandir_ (aio_req req, worker *self)
640	{	1026	{
641	DIR *dirp = opendir (path);	1027	DIR *dirp;
642	union	1028	union
643	{	1029	{
644	struct dirent d;	1030	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;	1032	} *u;
647	struct dirent *entp;	1033	struct dirent *entp;
648	char *name, *names;	1034	char *name, *names;
649	int memlen = 4096;	1035	int memlen = 4096;
650	int memofs = 0;	1036	int memofs = 0;
651	int res = 0;	1037	int res = 0;
652	int errorno;	1038	int errorno;
653		1039
654	if (!dirp)	1040	LOCK (wrklock);
655	return -1;	1041	self->dirp = dirp = opendir (req->ptr1);
656		1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
657	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);
658		1097
659	for (;;)	1098	for (;;)
660	{	1099	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);	1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
662		1101
663	if (!entp)	1102	LOCK (reqlock);
664	break;
665
666	name = entp->d_name;
667
668	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669	{
670	int len = strlen (name) + 1;
671
672	res++;
673
674	while (memofs + len > memlen)
675	{
676	memlen *= 2;
677	names = realloc (names, memlen);
678	if (!names)
679	break;
680	}
681
682	memcpy (names + memofs, name, len);
683	memofs += len;
684	}
685	}
686
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;
695	}
696
697	*namesp = (void *)names;
698	return res;
699	}
700
701	/*****************************************************************************/
702
703	static void *aio_proc (void *thr_arg)
704	{
705	aio_req req;
706	int type;
707
708	do
709	{
710	pthread_mutex_lock (&reqlock);
711		1103
712	for (;;)	1104	for (;;)
713	{	1105	{
714	req = reqs;	1106	self->req = req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		1107
722	if (req)	1108	if (req)
723	break;	1109	break;
724		1110
725	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;
726	}	1132	}
727		1133
728	pthread_mutex_unlock (&reqlock);	1134	--nready;
		1135
		1136	UNLOCK (reqlock);
729		1137
730	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
731		1139
732	if (!req->cancelled)	1140	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	1141	switch (req->type)
734	{	1142	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
736	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;
737		1149
738	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;
739	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;
740		1152
741	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;
742	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;
743	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;
744		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
745	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;
746	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
748	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;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
751	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;
752		1172
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
756		1176
757	case REQ_SLEEP:	1177	case REQ_BUSY:
758	{	1178	{
759	struct timeval tv;	1179	struct timeval tv;
760		1180
761	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
762	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
763		1183
764	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
765	}	1185	}
766		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
767	case REQ_QUIT:	1215	case REQ_QUIT:
768	break;	1216	goto quit;
769		1217
770	default:	1218	default:
771	req->result = ENOSYS;	1219	req->result = -1;
772	break;	1220	break;
773	}	1221	}
774		1222
775	req->errorno = errno;	1223	req->errorno = errno;
776		1224
777	pthread_mutex_lock (&reslock);	1225	LOCK (reslock);
778		1226
779	req->next = 0;	1227	++npending;
780		1228
781	if (rese)	1229	if (!reqq_push (&res_queue, req))
782	{	1230	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
791	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);
792	}	1237	}
793		1238
794	pthread_mutex_unlock (&reslock);	1239	self->req = 0;
		1240	worker_clear (self);
		1241
		1242	UNLOCK (reslock);
795	}	1243	}
796	while (type != REQ_QUIT);	1244
		1245	quit:
		1246	LOCK (wrklock);
		1247	worker_free (self);
		1248	UNLOCK (wrklock);
797		1249
798	return 0;	1250	return 0;
799	}	1251	}
800		1252
801	/*****************************************************************************/	1253	/*****************************************************************************/
802		1254
803	static void atfork_prepare (void)	1255	static void atfork_prepare (void)
804	{	1256	{
805	pthread_mutex_lock (&reqlock);	1257	LOCK (wrklock);
806	pthread_mutex_lock (&reslock);	1258	LOCK (reqlock);
		1259	LOCK (reslock);
807	#if !HAVE_PREADWRITE	1260	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);	1261	LOCK (preadwritelock);
809	#endif	1262	#endif
810	#if !HAVE_READDIR_R	1263	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);	1264	LOCK (readdirlock);
812	#endif	1265	#endif
813	}	1266	}
814		1267
815	static void atfork_parent (void)	1268	static void atfork_parent (void)
816	{	1269	{
817	#if !HAVE_READDIR_R	1270	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);	1271	UNLOCK (readdirlock);
819	#endif	1272	#endif
820	#if !HAVE_PREADWRITE	1273	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);	1274	UNLOCK (preadwritelock);
822	#endif	1275	#endif
823	pthread_mutex_unlock (&reslock);	1276	UNLOCK (reslock);
824	pthread_mutex_unlock (&reqlock);	1277	UNLOCK (reqlock);
		1278	UNLOCK (wrklock);
825	}	1279	}
826		1280
827	static void atfork_child (void)	1281	static void atfork_child (void)
828	{	1282	{
829	aio_req prv;	1283	aio_req prv;
830		1284
831	started = 0;	1285	while (prv = reqq_shift (&req_queue))
		1286	req_destroy (prv);
832		1287
833	while (reqs)	1288	while (prv = reqq_shift (&res_queue))
		1289	req_destroy (prv);
		1290
		1291	while (wrk_first.next != &wrk_first)
834	{	1292	{
835	prv = reqs;	1293	worker *wrk = wrk_first.next;
836	reqs = prv->next;	1294
		1295	if (wrk->req)
		1296	req_destroy (wrk->req);
		1297
		1298	worker_clear (wrk);
837	req_free (prv);	1299	worker_free (wrk);
838	}	1300	}
839		1301
840	reqs = reqe = 0;	1302	started = 0;
841		1303	idle = 0;
842	while (ress)	1304	nreqs = 0;
843	{	1305	nready = 0;
844	prv = ress;	1306	npending = 0;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850		1307
851	close (respipe [0]);	1308	close (respipe [0]);
852	close (respipe [1]);	1309	close (respipe [1]);
853	create_pipe ();	1310	create_pipe ();
854		1311
855	atfork_parent ();	1312	atfork_parent ();
856	}	1313	}
857		1314
858	#define dREQ \	1315	#define dREQ \
859	aio_req req; \	1316	aio_req req; \
		1317	int req_pri = next_pri; \
		1318	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	1319	\
861	if (SvOK (callback) && !SvROK (callback)) \	1320	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	1321	croak ("callback must be undef or of reference type"); \
863	\	1322	\
864	Newz (0, req, 1, aio_cb); \	1323	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1324	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1325	croak ("out of memory during aio_req allocation"); \
867	\	1326	\
868	req->callback = newSVsv (callback)	1327	req->callback = newSVsv (callback); \
		1328	req->pri = req_pri
869		1329
870	#define REQ_SEND \	1330	#define REQ_SEND \
871	req_send (req); \	1331	req_send (req); \
872	\	1332	\
873	if (GIMME_V != G_VOID) \	1333	if (GIMME_V != G_VOID) \
…		…
878	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
879		1339
880	BOOT:	1340	BOOT:
881	{	1341	{
882	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
885	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));
886		1351
887	create_pipe ();	1352	create_pipe ();
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
889	}	1354	}
890		1355
891	void	1356	void
892	min_parallel (nthreads)	1357	max_poll_reqs (int nreqs)
893	int nthreads
894	PROTOTYPE: $	1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
895		1361
896	void	1362	void
897	max_parallel (nthreads)	1363	max_poll_time (double nseconds)
898	int nthreads
899	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);
900		1381
901	int	1382	int
902	max_outstanding (nreqs)	1383	max_outstanding (int maxreqs)
903	int nreqs	1384	PROTOTYPE: $
904	PROTOTYPE: $
905	CODE:	1385	CODE:
906	RETVAL = max_outstanding;	1386	RETVAL = max_outstanding;
907	max_outstanding = nreqs;	1387	max_outstanding = maxreqs;
		1388	OUTPUT:
		1389	RETVAL
908		1390
909	void	1391	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
911	SV * pathname
912	int flags
913	int mode
914	SV * callback
915	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
916	PPCODE:	1394	PPCODE:
917	{	1395	{
918	dREQ;	1396	dREQ;
919		1397
920	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
921	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
922	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
923	req->fd = flags;	1401	req->int1 = flags;
924	req->mode = mode;	1402	req->mode = mode;
925		1403
926	REQ_SEND;	1404	REQ_SEND;
927	}	1405	}
928		1406
929	void	1407	void
930	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
934	ALIAS:	1410	ALIAS:
935	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
937	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
938	PPCODE:	1414	PPCODE:
939	{	1415	{
940	dREQ;	1416	dREQ;
941		1417
942	req->type = ix;	1418	req->type = ix;
943	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
945		1421
946	REQ_SEND (req);	1422	REQ_SEND (req);
947	}	1423	}
948		1424
949	void	1425	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
951	SV * fh
952	UV offset
953	UV length
954	SV * data
955	UV dataoffset
956	SV * callback
957	ALIAS:	1427	ALIAS:
958	aio_read = REQ_READ	1428	aio_read = REQ_READ
959	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
960	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
961	PPCODE:	1431	PPCODE:
962	{	1432	{
963	aio_req req;
964	STRLEN svlen;	1433	STRLEN svlen;
965	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
		1435	UV len = SvUV (length);
966		1436
967	SvUPGRADE (data, SVt_PV);	1437	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);	1438	SvPOK_on (data);
969		1439
970	if (dataoffset < 0)	1440	if (dataoffset < 0)
971	dataoffset += svlen;	1441	dataoffset += svlen;
972		1442
973	if (dataoffset < 0 || dataoffset > svlen)	1443	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	1444	croak ("dataoffset outside of data scalar");
975		1445
976	if (ix == REQ_WRITE)	1446	if (ix == REQ_WRITE)
977	{	1447	{
978	/* write: check length and adjust. */	1448	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	1449	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	1450	len = svlen - dataoffset;
981	}	1451	}
982	else	1452	else
983	{	1453	{
984	/* read: grow scalar as necessary */	1454	/* read: grow scalar as necessary */
985	svptr = SvGROW (data, length + dataoffset);	1455	svptr = SvGROW (data, len + dataoffset + 1);
986	}	1456	}
987		1457
988	if (length < 0)	1458	if (len < 0)
989	croak ("length must not be negative");	1459	croak ("length must not be negative");
990		1460
991	{	1461	{
992	dREQ;	1462	dREQ;
993		1463
994	req->type = ix;	1464	req->type = ix;
995	req->fh = newSVsv (fh);	1465	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
997	: IoOFP (sv_2io (fh)));	1467	: IoOFP (sv_2io (fh)));
		1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	1469	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	1470	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	1471	req->ptr1 = (char *)svptr + dataoffset;
		1472	req->stroffset = dataoffset;
1002		1473
1003	if (!SvREADONLY (data))	1474	if (!SvREADONLY (data))
1004	{	1475	{
1005	SvREADONLY_on (data);	1476	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	1477	req->flags |= FLAG_SV2_RO_OFF;
1007	}	1478	}
1008		1479
1009	REQ_SEND;	1480	REQ_SEND;
1010	}	1481	}
1011	}	1482	}
1012		1483
1013	void	1484	void
		1485	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1486	PROTOTYPE: $$;$
		1487	PPCODE:
		1488	{
		1489	SV *data;
		1490	dREQ;
		1491
		1492	data = newSV (NAME_MAX);
		1493	SvPOK_on (data);
		1494
		1495	req->type = REQ_READLINK;
		1496	req->sv1 = newSVsv (path);
		1497	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1498	req->sv2 = data;
		1499	req->ptr1 = SvPVbyte_nolen (data);
		1500
		1501	REQ_SEND;
		1502	}
		1503
		1504	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1015	SV * out_fh
1016	SV * in_fh
1017	UV in_offset
1018	UV length
1019	SV * callback
1020	PROTOTYPE: $$$$;$	1506	PROTOTYPE: $$$$;$
1021	PPCODE:	1507	PPCODE:
1022	{	1508	{
1023	dREQ;	1509	dREQ;
1024		1510
1025	req->type = REQ_SENDFILE;	1511	req->type = REQ_SENDFILE;
1026	req->fh = newSVsv (out_fh);	1512	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1028	req->fh2 = newSVsv (in_fh);	1514	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1030	req->offset = in_offset;	1516	req->offs = SvVAL64 (in_offset);
1031	req->length = length;	1517	req->size = length;
1032		1518
1033	REQ_SEND;	1519	REQ_SEND;
1034	}	1520	}
1035		1521
1036	void	1522	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$	1524	PROTOTYPE: $$$;$
1043	PPCODE:	1525	PPCODE:
1044	{	1526	{
1045	dREQ;	1527	dREQ;
1046		1528
1047	req->type = REQ_READAHEAD;	1529	req->type = REQ_READAHEAD;
1048	req->fh = newSVsv (fh);	1530	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1050	req->offset = offset;	1532	req->offs = SvVAL64 (offset);
1051	req->length = length;	1533	req->size = length;
1052		1534
1053	REQ_SEND;	1535	REQ_SEND;
1054	}	1536	}
1055		1537
1056	void	1538	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	1540	ALIAS:
1061	aio_stat = REQ_STAT	1541	aio_stat = REQ_STAT
1062	aio_lstat = REQ_LSTAT	1542	aio_lstat = REQ_LSTAT
1063	PPCODE:	1543	PPCODE:
1064	{	1544	{
1065	dREQ;	1545	dREQ;
1066		1546
1067	New (0, req->statdata, 1, Stat_t);	1547	req->ptr2 = malloc (sizeof (Stat_t));
1068	if (!req->statdata)	1548	if (!req->ptr2)
1069	{	1549	{
1070	req_free (req);	1550	req_destroy (req);
1071	croak ("out of memory during aio_req->statdata allocation");	1551	croak ("out of memory during aio_stat statdata allocation");
1072	}	1552	}
		1553
		1554	req->flags |= FLAG_PTR2_FREE;
		1555	req->sv1 = newSVsv (fh_or_path);
1073		1556
1074	if (SvPOK (fh_or_path))	1557	if (SvPOK (fh_or_path))
1075	{	1558	{
1076	req->type = ix;	1559	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);	1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1079	}	1561	}
1080	else	1562	else
1081	{	1563	{
1082	req->type = REQ_FSTAT;	1564	req->type = REQ_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}	1566	}
1086		1567
1087	REQ_SEND;	1568	REQ_SEND;
1088	}	1569	}
1089		1570
1090	void	1571	void
		1572	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1579	req->sv1 = newSVsv (fh_or_path);
		1580
		1581	if (SvPOK (fh_or_path))
		1582	{
		1583	req->type = REQ_UTIME;
		1584	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1585	}
		1586	else
		1587	{
		1588	req->type = REQ_FUTIME;
		1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1590	}
		1591
		1592	REQ_SEND;
		1593	}
		1594
		1595	void
		1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1597	PPCODE:
		1598	{
		1599	dREQ;
		1600
		1601	req->mode = mode;
		1602	req->sv1 = newSVsv (fh_or_path);
		1603
		1604	if (SvPOK (fh_or_path))
		1605	{
		1606	req->type = REQ_CHMOD;
		1607	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1608	}
		1609	else
		1610	{
		1611	req->type = REQ_FCHMOD;
		1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1613	}
		1614
		1615	REQ_SEND;
		1616	}
		1617
		1618	void
		1619	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1626	req->sv1 = newSVsv (fh_or_path);
		1627
		1628	if (SvPOK (fh_or_path))
		1629	{
		1630	req->type = REQ_CHOWN;
		1631	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1632	}
		1633	else
		1634	{
		1635	req->type = REQ_FCHOWN;
		1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1637	}
		1638
		1639	REQ_SEND;
		1640	}
		1641
		1642	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	1644	ALIAS:
1095	aio_unlink = REQ_UNLINK	1645	aio_unlink = REQ_UNLINK
1096	aio_rmdir = REQ_RMDIR	1646	aio_rmdir = REQ_RMDIR
1097	aio_readdir = REQ_READDIR	1647	aio_readdir = REQ_READDIR
1098	PPCODE:	1648	PPCODE:
1099	{	1649	{
1100	dREQ;	1650	dREQ;
1101		1651
1102	req->type = ix;	1652	req->type = ix;
1103	req->data = newSVsv (pathname);	1653	req->sv1 = newSVsv (pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	1654	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1655
		1656	REQ_SEND;
		1657	}
		1658
		1659	void
		1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1661	PPCODE:
		1662	{
		1663	dREQ;
1105		1664
		1665	req->type = REQ_MKDIR;
		1666	req->sv1 = newSVsv (pathname);
		1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1668	req->mode = mode;
		1669
1106	REQ_SEND;	1670	REQ_SEND;
1107	}	1671	}
1108		1672
1109	void	1673	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:	1675	ALIAS:
1115	aio_link = REQ_LINK	1676	aio_link = REQ_LINK
1116	aio_symlink = REQ_SYMLINK	1677	aio_symlink = REQ_SYMLINK
1117	aio_rename = REQ_RENAME	1678	aio_rename = REQ_RENAME
1118	PPCODE:	1679	PPCODE:
1119	{	1680	{
1120	dREQ;	1681	dREQ;
1121		1682
1122	req->type = ix;	1683	req->type = ix;
1123	req->fh = newSVsv (oldpath);	1684	req->sv2 = newSVsv (oldpath);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1125	req->data = newSVsv (newpath);	1686	req->sv1 = newSVsv (newpath);
1126	req->dataptr = SvPVbyte_nolen (req->data);	1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1127		1688
1128	REQ_SEND;	1689	REQ_SEND;
1129	}	1690	}
1130		1691
1131	void	1692	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1694	PPCODE:
1136	{	1695	{
1137	dREQ;	1696	dREQ;
1138		1697
1139	req->type = REQ_SLEEP;	1698	req->type = REQ_MKNOD;
1140	req->fd = delay < 0. ? 0 : delay;	1699	req->sv1 = newSVsv (pathname);
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
1142		1701	req->mode = (mode_t)mode;
		1702	req->offs = dev;
		1703
1143	REQ_SEND;	1704	REQ_SEND;
1144	}	1705	}
1145		1706
1146	void	1707	void
		1708	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->type = REQ_BUSY;
		1714	req->nv1 = delay < 0. ? 0. : delay;
		1715
		1716	REQ_SEND;
		1717	}
		1718
		1719	void
1147	aio_group (callback=&PL_sv_undef)	1720	aio_group (SV *callback=&PL_sv_undef)
1148	SV * callback
1149	PROTOTYPE: ;$	1721	PROTOTYPE: ;$
1150	PPCODE:	1722	PPCODE:
1151	{	1723	{
1152	dREQ;	1724	dREQ;
		1725
1153	req->type = REQ_GROUP;	1726	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1727
1157	req_send (req);	1728	req_send (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	1730	}
		1731
		1732	void
		1733	aio_nop (SV *callback=&PL_sv_undef)
		1734	PPCODE:
		1735	{
		1736	dREQ;
		1737
		1738	req->type = REQ_NOP;
		1739
		1740	REQ_SEND;
		1741	}
		1742
		1743	int
		1744	aioreq_pri (int pri = 0)
		1745	PROTOTYPE: ;$
		1746	CODE:
		1747	RETVAL = next_pri - PRI_BIAS;
		1748	if (items > 0)
		1749	{
		1750	if (pri < PRI_MIN) pri = PRI_MIN;
		1751	if (pri > PRI_MAX) pri = PRI_MAX;
		1752	next_pri = pri + PRI_BIAS;
		1753	}
		1754	OUTPUT:
		1755	RETVAL
		1756
		1757	void
		1758	aioreq_nice (int nice = 0)
		1759	CODE:
		1760	nice = next_pri - nice;
		1761	if (nice < PRI_MIN) nice = PRI_MIN;
		1762	if (nice > PRI_MAX) nice = PRI_MAX;
		1763	next_pri = nice + PRI_BIAS;
1160		1764
1161	void	1765	void
1162	flush ()	1766	flush ()
1163	PROTOTYPE:	1767	PROTOTYPE:
1164	CODE:	1768	CODE:
…		…
1166	{	1770	{
1167	poll_wait ();	1771	poll_wait ();
1168	poll_cb ();	1772	poll_cb ();
1169	}	1773	}
1170		1774
1171	void	1775	int
1172	poll()	1776	poll()
1173	PROTOTYPE:	1777	PROTOTYPE:
1174	CODE:	1778	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();	1779	poll_wait ();
1178	poll_cb ();	1780	RETVAL = poll_cb ();
1179	}	1781	OUTPUT:
		1782	RETVAL
1180		1783
1181	int	1784	int
1182	poll_fileno()	1785	poll_fileno()
1183	PROTOTYPE:	1786	PROTOTYPE:
1184	CODE:	1787	CODE:
…		…
1196		1799
1197	void	1800	void
1198	poll_wait()	1801	poll_wait()
1199	PROTOTYPE:	1802	PROTOTYPE:
1200	CODE:	1803	CODE:
1201	if (nreqs)
1202	poll_wait ();	1804	poll_wait ();
		1805
		1806	void
		1807	setsig (int signum = SIGIO)
		1808	PROTOTYPE: ;$
		1809	CODE:
		1810	{
		1811	if (block_sig_level)
		1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1813
		1814	LOCK (reslock);
		1815	main_tid = pthread_self ();
		1816	main_sig = signum;
		1817	UNLOCK (reslock);
		1818
		1819	if (main_sig && npending)
		1820	pthread_kill (main_tid, main_sig);
		1821	}
		1822
		1823	void
		1824	aio_block (SV *cb)
		1825	PROTOTYPE: &
		1826	PPCODE:
		1827	{
		1828	int count;
		1829
		1830	block_sig ();
		1831	PUSHMARK (SP);
		1832	PUTBACK;
		1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1834	SPAGAIN;
		1835	unblock_sig ();
		1836
		1837	if (SvTRUE (ERRSV))
		1838	croak (0);
		1839
		1840	XSRETURN (count);
		1841	}
1203		1842
1204	int	1843	int
1205	nreqs()	1844	nreqs()
1206	PROTOTYPE:	1845	PROTOTYPE:
1207	CODE:	1846	CODE:
1208	RETVAL = nreqs;	1847	RETVAL = nreqs;
1209	OUTPUT:	1848	OUTPUT:
1210	RETVAL	1849	RETVAL
1211		1850
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1851	int
1213		1852	nready()
1214	void
1215	cancel (aio_req_ornot req)
1216	PROTOTYPE:	1853	PROTOTYPE:
1217	CODE:	1854	CODE:
		1855	RETVAL = get_nready ();
		1856	OUTPUT:
		1857	RETVAL
		1858
		1859	int
		1860	npending()
		1861	PROTOTYPE:
		1862	CODE:
		1863	RETVAL = get_npending ();
		1864	OUTPUT:
		1865	RETVAL
		1866
		1867	int
		1868	nthreads()
		1869	PROTOTYPE:
		1870	CODE:
		1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1872	RETVAL = started;
		1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1874	OUTPUT:
		1875	RETVAL
		1876
		1877	PROTOTYPES: DISABLE
		1878
		1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1880
		1881	void
		1882	cancel (aio_req_ornot req)
		1883	CODE:
1218	req_cancel (req);	1884	req_cancel (req);
1219		1885
		1886	void
		1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1888	CODE:
		1889	SvREFCNT_dec (req->callback);
		1890	req->callback = newSVsv (callback);
		1891
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1892	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1893
1222	void	1894	void
1223	add (aio_req grp, ...)	1895	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1896	PPCODE:
1226	{	1897	{
1227	int i;	1898	int i;
		1899	aio_req req;
		1900
		1901	if (main_sig && !block_sig_level)
		1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1903
		1904	if (grp->int1 == 2)
		1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		1906
1229	for (i = 1; i < items; ++i )	1907	for (i = 1; i < items; ++i )
1230	{	1908	{
1231	if (GIMME_V != G_VOID)	1909	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1911
1234	aio_req req = SvAIO_REQ (ST (i));	1912	req = SvAIO_REQ (ST (i));
1235		1913
1236	if (req)	1914	if (req)
1237	{	1915	{
1238	req->grp_prev = grp;	1916	++grp->size;
1239	req->grp_next = grp->grp_next;
1240	grp->grp_next->grp_prev = req;
1241	grp->grp_next = req;
1242
1243	req->grp = grp;	1917	req->grp = grp;
		1918
		1919	req->grp_prev = 0;
		1920	req->grp_next = grp->grp_first;
		1921
		1922	if (grp->grp_first)
		1923	grp->grp_first->grp_prev = req;
		1924
		1925	grp->grp_first = req;
1244	}	1926	}
1245	}	1927	}
1246	}	1928	}
1247		1929
		1930	void
		1931	cancel_subs (aio_req_ornot req)
		1932	CODE:
		1933	req_cancel_subs (req);
		1934
		1935	void
		1936	result (aio_req grp, ...)
		1937	CODE:
		1938	{
		1939	int i;
		1940	AV *av;
		1941
		1942	grp->errorno = errno;
		1943
		1944	av = newAV ();
		1945
		1946	for (i = 1; i < items; ++i )
		1947	av_push (av, newSVsv (ST (i)));
		1948
		1949	SvREFCNT_dec (grp->sv1);
		1950	grp->sv1 = (SV *)av;
		1951	}
		1952
		1953	void
		1954	errno (aio_req grp, int errorno = errno)
		1955	CODE:
		1956	grp->errorno = errorno;
		1957
		1958	void
		1959	limit (aio_req grp, int limit)
		1960	CODE:
		1961	grp->int2 = limit;
		1962	aio_grp_feed (grp);
		1963
		1964	void
		1965	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1966	CODE:
		1967	{
		1968	SvREFCNT_dec (grp->sv2);
		1969	grp->sv2 = newSVsv (callback);
		1970
		1971	if (grp->int2 <= 0)
		1972	grp->int2 = 2;
		1973
		1974	aio_grp_feed (grp);
		1975	}
		1976

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