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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 1.97 by root, Sun Jan 7 22:59:57 2007 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	17	#include "autoconf/config.h"
9		18
10	#include <pthread.h>	19	#include <pthread.h>
11		20
12	#include <stddef.h>	21	#include <stddef.h>
		22	#include <stdlib.h>
13	#include <errno.h>	23	#include <errno.h>
14	#include <sys/time.h>	24	#include <sys/time.h>
15	#include <sys/select.h>	25	#include <sys/select.h>
16	#include <sys/types.h>	26	#include <sys/types.h>
17	#include <sys/stat.h>	27	#include <sys/stat.h>
…		…
34	# else	44	# else
35	# error sendfile support requested but not available	45	# error sendfile support requested but not available
36	# endif	46	# endif
37	#endif	47	#endif
38		48
		49	/* number of seconds after which idle threads exit */
		50	#define IDLE_TIMEOUT 10
		51
39	/* used for struct dirent, AIX doesn't provide it */	52	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	53	#ifndef NAME_MAX
41	# define NAME_MAX 4096	54	# define NAME_MAX 4096
42	#endif	55	#endif
43		56
		57	#ifndef PTHREAD_STACK_MIN
		58	/* care for broken platforms, e.g. windows */
		59	# define PTHREAD_STACK_MIN 16384
		60	#endif
		61
44	#if __ia64	62	#if __ia64
45	# define STACKSIZE 65536	63	# define STACKSIZE 65536
		64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		65	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	66	#else
47	# define STACKSIZE 8192	67	# define STACKSIZE 16384
48	#endif	68	#endif
		69
		70	/* wether word reads are potentially non-atomic.
		71	* this is conservatice, likely most arches this runs
		72	* on have atomic word read/writes.
		73	*/
		74	#ifndef WORDACCESS_UNSAFE
		75	# if __i386 || __x86_64
		76	# define WORDACCESS_UNSAFE 0
		77	# else
		78	# define WORDACCESS_UNSAFE 1
		79	# endif
		80	#endif
		81
		82	/* buffer size for various temporary buffers */
		83	#define AIO_BUFSIZE 65536
		84
		85	#define dBUF \
		86	char *aio_buf; \
		87	LOCK (wrklock); \
		88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		89	UNLOCK (wrklock); \
		90	if (!aio_buf) \
		91	return -1;
		92
		93	typedef SV SV8; /* byte-sv, used for argument-checking */
49		94
50	enum {	95	enum {
51	REQ_QUIT,	96	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	97	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,	99	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	101	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	105	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	106	REQ_BUSY,
62	};	107	};
63		108
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		111
67	typedef struct aio_cb	112	typedef struct aio_cb
68	{	113	{
69	struct aio_cb *volatile next;	114	struct aio_cb *volatile next;
70		115
		116	SV *callback, *fh;
		117	SV *sv1, *sv2;
		118	void *ptr1, *ptr2;
		119	off_t offs;
		120	size_t size;
		121	ssize_t result;
		122
		123	STRLEN stroffset;
		124	int type;
		125	int int1, int2;
		126	int errorno;
		127	mode_t mode; /* open */
		128
		129	unsigned char flags;
		130	unsigned char pri;
		131
		132	SV *self; /* the perl counterpart of this request, if any */
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	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;	134	} aio_cb;
		135
		136	enum {
		137	FLAG_CANCELLED = 0x01, /* request was cancelled */
		138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
		140	};
90		141
91	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
93		144
		145	enum {
		146	PRI_MIN = -4,
		147	PRI_MAX = 4,
		148
		149	DEFAULT_PRI = 0,
		150	PRI_BIAS = -PRI_MIN,
		151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		152	};
		153
		154	#define AIO_TICKS ((1000000 + 1023) >> 10)
		155
		156	static unsigned int max_poll_time = 0;
		157	static unsigned int max_poll_reqs = 0;
		158
		159	/* calculcate time difference in ~1/AIO_TICKS of a second */
		160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		161	{
		162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		164	}
		165
		166	static pthread_t main_tid;
		167	static int main_sig;
		168	static int block_sig_level;
		169
		170	void block_sig ()
		171	{
		172	sigset_t ss;
		173
		174	if (block_sig_level++)
		175	return;
		176
		177	if (!main_sig)
		178	return;
		179
		180	sigemptyset (&ss);
		181	sigaddset (&ss, main_sig);
		182	pthread_sigmask (SIG_BLOCK, &ss, 0);
		183	}
		184
		185	void unblock_sig ()
		186	{
		187	sigset_t ss;
		188
		189	if (--block_sig_level)
		190	return;
		191
		192	if (!main_sig)
		193	return;
		194
		195	sigemptyset (&ss);
		196	sigaddset (&ss, main_sig);
		197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		198	}
		199
		200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		201
94	static int started, wanted;	202	static unsigned int started, idle, wanted;
95	static volatile int nreqs;	203
96	static int max_outstanding = 1<<30;	204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		206	#else
		207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		208	#endif
		209
		210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		212
		213	/* worker threads management */
		214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		215
		216	typedef struct worker {
		217	/* locked by wrklock */
		218	struct worker *prev, *next;
		219
		220	pthread_t tid;
		221
		222	/* locked by reslock, reqlock or wrklock */
		223	aio_req req; /* currently processed request */
		224	void *dbuf;
		225	DIR *dirp;
		226	} worker;
		227
		228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		229
		230	static void worker_clear (worker *wrk)
		231	{
		232	if (wrk->dirp)
		233	{
		234	closedir (wrk->dirp);
		235	wrk->dirp = 0;
		236	}
		237
		238	if (wrk->dbuf)
		239	{
		240	free (wrk->dbuf);
		241	wrk->dbuf = 0;
		242	}
		243	}
		244
		245	static void worker_free (worker *wrk)
		246	{
		247	wrk->next->prev = wrk->prev;
		248	wrk->prev->next = wrk->next;
		249
		250	free (wrk);
		251	}
		252
		253	static volatile unsigned int nreqs, nready, npending;
		254	static volatile unsigned int max_idle = 4;
		255	static volatile unsigned int max_outstanding = 0xffffffff;
97	static int respipe [2];	256	static int respipe [2];
98		257
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		261
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	262	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		263
		264	static unsigned int get_nready ()
		265	{
		266	unsigned int retval;
		267
		268	LOCK (reqlock);
		269	retval = nready;
		270	UNLOCK (reqlock);
		271
		272	return retval;
		273	}
		274
		275	static unsigned int get_npending ()
		276	{
		277	unsigned int retval;
		278
		279	LOCK (reslock);
		280	retval = npending;
		281	UNLOCK (reslock);
		282
		283	return retval;
		284	}
		285
		286	static unsigned int get_nthreads ()
		287	{
		288	unsigned int retval;
		289
		290	LOCK (wrklock);
		291	retval = started;
		292	UNLOCK (wrklock);
		293
		294	return retval;
		295	}
		296
		297	#else
		298
		299	# define get_nready() nready
		300	# define get_npending() npending
		301	# define get_nthreads() started
		302
		303	#endif
		304
		305	/*
		306	* a somewhat faster data structure might be nice, but
		307	* with 8 priorities this actually needs <20 insns
		308	* per shift, the most expensive operation.
		309	*/
		310	typedef struct {
		311	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		312	int size;
		313	} reqq;
		314
		315	static reqq req_queue;
		316	static reqq res_queue;
		317
		318	int reqq_push (reqq *q, aio_req req)
		319	{
		320	int pri = req->pri;
		321	req->next = 0;
		322
		323	if (q->qe[pri])
		324	{
		325	q->qe[pri]->next = req;
		326	q->qe[pri] = req;
		327	}
		328	else
		329	q->qe[pri] = q->qs[pri] = req;
		330
		331	return q->size++;
		332	}
		333
		334	aio_req reqq_shift (reqq *q)
		335	{
		336	int pri;
		337
		338	if (!q->size)
		339	return 0;
		340
		341	--q->size;
		342
		343	for (pri = NUM_PRI; pri--; )
		344	{
		345	aio_req req = q->qs[pri];
		346
		347	if (req)
		348	{
		349	if (!(q->qs[pri] = req->next))
		350	q->qe[pri] = 0;
		351
		352	return req;
		353	}
		354	}
		355
		356	abort ();
		357	}
		358
		359	static int poll_cb ();
		360	static int req_invoke (aio_req req);
106	static void req_free (aio_req req);	361	static void req_free (aio_req req);
		362	static void req_cancel (aio_req req);
107		363
108	/* must be called at most once */	364	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
110	{	366	{
111	if (!req->self)	367	if (!req->self)
…		…
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
118	}	374	}
119		375
120	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
121	{	377	{
		378	MAGIC *mg;
		379
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	380	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
123	croak ("object of class " AIO_REQ_KLASS " expected");	381	croak ("object of class " AIO_REQ_KLASS " expected");
124		382
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		384
127	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	386	}
129		387
130	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
131	{	389	{
132	while (grp->length < grp->fd2)	390	block_sig ();
		391
		392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
133	{	393	{
134	int old_len = grp->length;	394	int old_len = grp->size;
135		395
136	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
137	{	397	{
138	dSP;	398	dSP;
139		399
140	ENTER;	400	ENTER;
141	SAVETMPS;	401	SAVETMPS;
142	PUSHMARK (SP);	402	PUSHMARK (SP);
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
144	PUTBACK;	404	PUTBACK;
145	call_sv (grp->fh2, G_VOID | G_EVAL);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
146	SPAGAIN;	406	SPAGAIN;
147	FREETMPS;	407	FREETMPS;
148	LEAVE;	408	LEAVE;
149	}	409	}
150		410
151	/* stop if no progress has been made */	411	/* stop if no progress has been made */
152	if (old_len == grp->length)	412	if (old_len == grp->size)
153	{	413	{
154	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
155	grp->fh2 = 0;	415	grp->sv2 = 0;
156	break;	416	break;
157	}	417	}
158	}	418	}
159	}
160		419
161	static void poll_wait ()	420	unblock_sig ();
		421	}
		422
		423	static void aio_grp_dec (aio_req grp)
162	{	424	{
163	if (nreqs && !ress)	425	--grp->size;
		426
		427	/* call feeder, if applicable */
		428	aio_grp_feed (grp);
		429
		430	/* finish, if done */
		431	if (!grp->size && grp->int1)
164	{	432	{
165	fd_set rfd;	433	block_sig ();
166	FD_ZERO(&rfd);
167	FD_SET(respipe [0], &rfd);
168		434
169	select (respipe [0] + 1, &rfd, 0, 0, 0);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
		442	req_free (grp);
		443	unblock_sig ();
170	}	444	}
171	}	445	}
172		446
173	static void req_invoke (aio_req req)	447	static int req_invoke (aio_req req)
174	{	448	{
175	dSP;	449	dSP;
176	int errorno = errno;
177		450
178	if (req->cancelled || !SvOK (req->callback))	451	if (req->flags & FLAG_SV1_RO_OFF)
179	return;	452	SvREADONLY_off (req->sv1);
180		453
181	errno = req->errorno;	454	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	{	455	{
190	case REQ_READDIR:	456	ENTER;
		457	SAVETMPS;
		458	PUSHMARK (SP);
		459	EXTEND (SP, 1);
		460
		461	switch (req->type)
191	{	462	{
192	SV *rv = &PL_sv_undef;	463	case REQ_READDIR:
193
194	if (req->result >= 0)
195	{	464	{
196	char *buf = req->data2ptr;	465	SV *rv = &PL_sv_undef;
197	AV *av = newAV ();
198		466
199	while (req->result)	467	if (req->result >= 0)
200	{	468	{
		469	int i;
		470	char *buf = req->ptr2;
		471	AV *av = newAV ();
		472
		473	av_extend (av, req->result - 1);
		474
		475	for (i = 0; i < req->result; ++i)
		476	{
201	SV *sv = newSVpv (buf, 0);	477	SV *sv = newSVpv (buf, 0);
202		478
203	av_push (av, sv);	479	av_store (av, i, sv);
204	buf += SvCUR (sv) + 1;	480	buf += SvCUR (sv) + 1;
205	req->result--;	481	}
		482
		483	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}	484	}
207		485
208	rv = sv_2mortal (newRV_noinc ((SV *)av));	486	PUSHs (rv);
209	}	487	}
		488	break;
210		489
		490	case REQ_OPEN:
		491	{
		492	/* convert fd to fh */
		493	SV *fh;
		494
		495	PUSHs (sv_2mortal (newSViv (req->result)));
		496	PUTBACK;
		497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		498	SPAGAIN;
		499
		500	fh = POPs;
		501	PUSHMARK (SP);
211	PUSHs (rv);	502	XPUSHs (fh);
		503	}
		504	break;
		505
		506	case REQ_GROUP:
		507	req->int1 = 2; /* mark group as finished */
		508
		509	if (req->sv1)
		510	{
		511	int i;
		512	AV *av = (AV *)req->sv1;
		513
		514	EXTEND (SP, AvFILL (av) + 1);
		515	for (i = 0; i <= AvFILL (av); ++i)
		516	PUSHs (*av_fetch (av, i, 0));
		517	}
		518	break;
		519
		520	case REQ_NOP:
		521	case REQ_BUSY:
		522	break;
		523
		524	case REQ_READLINK:
		525	if (req->result > 0)
		526	{
		527	SvCUR_set (req->sv1, req->result);
		528	*SvEND (req->sv1) = 0;
		529	PUSHs (req->sv1);
		530	}
		531	break;
		532
		533	case REQ_STAT:
		534	case REQ_LSTAT:
		535	case REQ_FSTAT:
		536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		537	PL_laststatval = req->result;
		538	PL_statcache = *(Stat_t *)(req->ptr2);
		539	PUSHs (sv_2mortal (newSViv (req->result)));
		540	break;
		541
		542	case REQ_READ:
		543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
		544	*SvEND (req->sv1) = 0;
		545	PUSHs (sv_2mortal (newSViv (req->result)));
		546	break;
		547
		548	default:
		549	PUSHs (sv_2mortal (newSViv (req->result)));
		550	break;
212	}	551	}
213	break;
214		552
215	case REQ_OPEN:	553	errno = req->errorno;
216	{
217	/* convert fd to fh */
218	SV *fh;
219		554
220	PUSHs (sv_2mortal (newSViv (req->result)));
221	PUTBACK;	555	PUTBACK;
222	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	556	call_sv (req->callback, G_VOID | G_EVAL);
223	SPAGAIN;	557	SPAGAIN;
224		558
225	fh = SvREFCNT_inc (POPs);	559	FREETMPS;
226		560	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	}	561	}
253		562
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)	563	if (req->grp)
274	{	564	{
275	aio_req grp = req->grp;	565	aio_req grp = req->grp;
276		566
277	/* unlink request */	567	/* unlink request */
…		…
279	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;	569	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280		570
281	if (grp->grp_first == req)	571	if (grp->grp_first == req)
282	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
283		573
284	--grp->length;
285
286	/* call feeder, if applicable */
287	aio_grp_feed (grp);	574	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	}	575	}
296		576
		577	return !SvTRUE (ERRSV);
		578	}
		579
		580	static void req_free (aio_req req)
		581	{
297	if (req->self)	582	if (req->self)
298	{	583	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
301	}	586	}
302		587
303	SvREFCNT_dec (req->data);
304	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
305	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
306	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);
308		592
309	if (req->type == REQ_READDIR && req->result >= 0)	593	if (req->flags & FLAG_PTR2_FREE)
310	free (req->data2ptr);	594	free (req->ptr2);
311		595
312	Safefree (req);	596	Safefree (req);
313	}	597	}
314		598
		599	static void req_cancel_subs (aio_req grp)
		600	{
		601	aio_req sub;
		602
		603	if (grp->type != REQ_GROUP)
		604	return;
		605
		606	SvREFCNT_dec (grp->sv2);
		607	grp->sv2 = 0;
		608
		609	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		610	req_cancel (sub);
		611	}
		612
315	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
316	{	614	{
317	req->cancelled = 1;	615	req->flags |= FLAG_CANCELLED;
318		616
319	if (req->type == REQ_GROUP)	617	req_cancel_subs (req);
320	{
321	aio_req sub;
322
323	for (sub = req->grp_first; sub; sub = sub->grp_next)
324	req_cancel (sub);
325	}
326	}
327
328	static int poll_cb ()
329	{
330	dSP;
331	int count = 0;
332	int do_croak = 0;
333	aio_req req;
334
335	for (;;)
336	{
337	pthread_mutex_lock (&reslock);
338	req = ress;
339
340	if (req)
341	{
342	ress = req->next;
343
344	if (!ress)
345	{
346	/* read any signals sent by the worker threads */
347	char buf [32];
348	while (read (respipe [0], buf, 32) == 32)
349	;
350
351	rese = 0;
352	}
353	}
354
355	pthread_mutex_unlock (&reslock);
356
357	if (!req)
358	break;
359
360	nreqs--;
361
362	if (req->type == REQ_QUIT)
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	}
391
392	return count;
393	}	618	}
394		619
395	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
396		621
397	static void start_thread (void)	622	static void start_thread (void)
398	{	623	{
399	sigset_t fullsigset, oldsigset;	624	sigset_t fullsigset, oldsigset;
400	pthread_t tid;
401	pthread_attr_t attr;	625	pthread_attr_t attr;
		626
		627	worker *wrk = calloc (1, sizeof (worker));
		628
		629	if (!wrk)
		630	croak ("unable to allocate worker thread data");
402		631
403	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
404	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
405	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		635	#ifdef PTHREAD_SCOPE_PROCESS
		636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		637	#endif
406		638
407	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
		640
		641	LOCK (wrklock);
408	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
409		643
410	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 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	{	645	{
429	reqe->next = req;	646	wrk->prev = &wrk_first;
430	reqe = req;	647	wrk->next = wrk_first.next;
		648	wrk_first.next->prev = wrk;
		649	wrk_first.next = wrk;
		650	++started;
431	}	651	}
432	else	652	else
433	reqe = reqs = req;	653	free (wrk);
434		654
		655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
		656	UNLOCK (wrklock);
		657	}
		658
		659	static void maybe_start_thread ()
		660	{
		661	if (get_nthreads () >= wanted)
		662	return;
		663
		664	/* todo: maybe use idle here, but might be less exact */
		665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		666	return;
		667
		668	start_thread ();
		669	}
		670
		671	static void req_send (aio_req req)
		672	{
		673	block_sig ();
		674
		675	++nreqs;
		676
		677	LOCK (reqlock);
		678	++nready;
		679	reqq_push (&req_queue, req);
435	pthread_cond_signal (&reqwait);	680	pthread_cond_signal (&reqwait);
436	pthread_mutex_unlock (&reqlock);	681	UNLOCK (reqlock);
437		682
438	if (nreqs > max_outstanding)	683	unblock_sig ();
439	for (;;)
440	{
441	poll_cb ();
442		684
443	if (nreqs <= max_outstanding)	685	maybe_start_thread ();
444	break;
445
446	poll_wait ();
447	}
448	}	686	}
449		687
450	static void end_thread (void)	688	static void end_thread (void)
451	{	689	{
452	aio_req req;	690	aio_req req;
		691
453	Newz (0, req, 1, aio_cb);	692	Newz (0, req, 1, aio_cb);
		693
454	req->type = REQ_QUIT;	694	req->type = REQ_QUIT;
		695	req->pri = PRI_MAX + PRI_BIAS;
455		696
456	req_send (req);	697	LOCK (reqlock);
		698	reqq_push (&req_queue, req);
		699	pthread_cond_signal (&reqwait);
		700	UNLOCK (reqlock);
		701
		702	LOCK (wrklock);
		703	--started;
		704	UNLOCK (wrklock);
		705	}
		706
		707	static void set_max_idle (int nthreads)
		708	{
		709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		710	max_idle = nthreads <= 0 ? 1 : nthreads;
		711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
457	}	712	}
458		713
459	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
460	{	715	{
461	if (wanted < nthreads)	716	if (wanted < nthreads)
462	wanted = nthreads;	717	wanted = nthreads;
463	}	718	}
464		719
465	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
466	{	721	{
467	int cur = started;
468
469	if (wanted > nthreads)	722	if (wanted > nthreads)
470	wanted = nthreads;	723	wanted = nthreads;
471		724
472	while (cur > wanted)	725	while (started > wanted)
		726	end_thread ();
		727	}
		728
		729	static void poll_wait ()
		730	{
		731	fd_set rfd;
		732
		733	while (nreqs)
473	{	734	{
		735	int size;
		736	if (WORDACCESS_UNSAFE) LOCK (reslock);
		737	size = res_queue.size;
		738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		739
		740	if (size)
		741	return;
		742
474	end_thread ();	743	maybe_start_thread ();
475	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
476	}	749	}
		750	}
477		751
478	while (started > wanted)	752	static int poll_cb ()
		753	{
		754	dSP;
		755	int count = 0;
		756	int maxreqs = max_poll_reqs;
		757	int do_croak = 0;
		758	struct timeval tv_start, tv_now;
		759	aio_req req;
		760
		761	if (max_poll_time)
		762	gettimeofday (&tv_start, 0);
		763
		764	block_sig ();
		765
		766	for (;;)
479	{	767	{
		768	for (;;)
		769	{
		770	maybe_start_thread ();
		771
		772	LOCK (reslock);
		773	req = reqq_shift (&res_queue);
		774
		775	if (req)
		776	{
		777	--npending;
		778
		779	if (!res_queue.size)
		780	{
		781	/* read any signals sent by the worker threads */
		782	char buf [4];
		783	while (read (respipe [0], buf, 4) == 4)
		784	;
		785	}
		786	}
		787
		788	UNLOCK (reslock);
		789
		790	if (!req)
		791	break;
		792
		793	--nreqs;
		794
		795	if (req->type == REQ_GROUP && req->size)
		796	{
		797	req->int1 = 1; /* mark request as delayed */
		798	continue;
		799	}
		800	else
		801	{
		802	if (!req_invoke (req))
		803	{
		804	req_free (req);
		805	unblock_sig ();
		806	croak (0);
		807	}
		808
		809	count++;
		810	}
		811
		812	req_free (req);
		813
		814	if (maxreqs && !--maxreqs)
		815	break;
		816
		817	if (max_poll_time)
		818	{
		819	gettimeofday (&tv_now, 0);
		820
		821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		822	break;
		823	}
		824	}
		825
		826	if (nreqs <= max_outstanding)
		827	break;
		828
480	poll_wait ();	829	poll_wait ();
481	poll_cb ();	830
		831	++maxreqs;
482	}	832	}
		833
		834	unblock_sig ();
		835	return count;
483	}	836	}
484		837
485	static void create_pipe ()	838	static void create_pipe ()
486	{	839	{
487	if (pipe (respipe))	840	if (pipe (respipe))
…		…
511	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
512	{	865	{
513	ssize_t res;	866	ssize_t res;
514	off_t ooffset;	867	off_t ooffset;
515		868
516	pthread_mutex_lock (&preadwritelock);	869	LOCK (preadwritelock);
517	ooffset = lseek (fd, 0, SEEK_CUR);	870	ooffset = lseek (fd, 0, SEEK_CUR);
518	lseek (fd, offset, SEEK_SET);	871	lseek (fd, offset, SEEK_SET);
519	res = read (fd, buf, count);	872	res = read (fd, buf, count);
520	lseek (fd, ooffset, SEEK_SET);	873	lseek (fd, ooffset, SEEK_SET);
521	pthread_mutex_unlock (&preadwritelock);	874	UNLOCK (preadwritelock);
522		875
523	return res;	876	return res;
524	}	877	}
525		878
526	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
527	{	880	{
528	ssize_t res;	881	ssize_t res;
529	off_t ooffset;	882	off_t ooffset;
530		883
531	pthread_mutex_lock (&preadwritelock);	884	LOCK (preadwritelock);
532	ooffset = lseek (fd, 0, SEEK_CUR);	885	ooffset = lseek (fd, 0, SEEK_CUR);
533	lseek (fd, offset, SEEK_SET);	886	lseek (fd, offset, SEEK_SET);
534	res = write (fd, buf, count);	887	res = write (fd, buf, count);
535	lseek (fd, offset, SEEK_SET);	888	lseek (fd, offset, SEEK_SET);
536	pthread_mutex_unlock (&preadwritelock);	889	UNLOCK (preadwritelock);
537		890
538	return res;	891	return res;
539	}	892	}
540	#endif	893	#endif
541		894
542	#if !HAVE_FDATASYNC	895	#if !HAVE_FDATASYNC
543	# define fdatasync fsync	896	# define fdatasync fsync
544	#endif	897	#endif
545		898
546	#if !HAVE_READAHEAD	899	#if !HAVE_READAHEAD
547	# define readahead aio_readahead	900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
548		901
549	static ssize_t readahead (int fd, off_t offset, size_t count)	902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
550	{	903	{
551	char readahead_buf[4096];	904	dBUF;
552		905
553	while (count > 0)	906	while (count > 0)
554	{	907	{
555	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
556		909
557	pread (fd, readahead_buf, len, offset);	910	pread (fd, aio_buf, len, offset);
558	offset += len;	911	offset += len;
559	count -= len;	912	count -= len;
560	}	913	}
561		914
562	errno = 0;	915	errno = 0;
563	}	916	}
		917
564	#endif	918	#endif
565		919
566	#if !HAVE_READDIR_R	920	#if !HAVE_READDIR_R
567	# define readdir_r aio_readdir_r	921	# define readdir_r aio_readdir_r
568		922
…		…
571	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
572	{	926	{
573	struct dirent *e;	927	struct dirent *e;
574	int errorno;	928	int errorno;
575		929
576	pthread_mutex_lock (&readdirlock);	930	LOCK (readdirlock);
577		931
578	e = readdir (dirp);	932	e = readdir (dirp);
579	errorno = errno;	933	errorno = errno;
580		934
581	if (e)	935	if (e)
…		…
584	strcpy (ent->d_name, e->d_name);	938	strcpy (ent->d_name, e->d_name);
585	}	939	}
586	else	940	else
587	*res = 0;	941	*res = 0;
588		942
589	pthread_mutex_unlock (&readdirlock);	943	UNLOCK (readdirlock);
590		944
591	errno = errorno;	945	errno = errorno;
592	return e ? 0 : -1;	946	return e ? 0 : -1;
593	}	947	}
594	#endif	948	#endif
595		949
596	/* sendfile always needs emulation */	950	/* sendfile always needs emulation */
597	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
598	{	952	{
599	ssize_t res;	953	ssize_t res;
600		954
601	if (!count)	955	if (!count)
602	return 0;	956	return 0;
…		…
613	{	967	{
614	off_t sbytes;	968	off_t sbytes;
615	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
616		970
617	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
618	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
619	res = sbytes;	973	res = sbytes;
620	}	974	}
621		975
622	# elif __hpux	976	# elif __hpux
623	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
651	#endif	1005	#endif
652	)	1006	)
653	)	1007	)
654	{	1008	{
655	/* emulate sendfile. this is a major pain in the ass */	1009	/* emulate sendfile. this is a major pain in the ass */
656	char buf[4096];	1010	dBUF;
		1011
657	res = 0;	1012	res = 0;
658		1013
659	while (count)	1014	while (count)
660	{	1015	{
661	ssize_t cnt;	1016	ssize_t cnt;
662		1017
663	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
664		1019
665	if (cnt <= 0)	1020	if (cnt <= 0)
666	{	1021	{
667	if (cnt && !res) res = -1;	1022	if (cnt && !res) res = -1;
668	break;	1023	break;
669	}	1024	}
670		1025
671	cnt = write (ofd, buf, cnt);	1026	cnt = write (ofd, aio_buf, cnt);
672		1027
673	if (cnt <= 0)	1028	if (cnt <= 0)
674	{	1029	{
675	if (cnt && !res) res = -1;	1030	if (cnt && !res) res = -1;
676	break;	1031	break;
…		…
684		1039
685	return res;	1040	return res;
686	}	1041	}
687		1042
688	/* read a full directory */	1043	/* read a full directory */
689	static int scandir_ (const char *path, void **namesp)	1044	static void scandir_ (aio_req req, worker *self)
690	{	1045	{
691	DIR *dirp = opendir (path);	1046	DIR *dirp;
692	union	1047	union
693	{	1048	{
694	struct dirent d;	1049	struct dirent d;
695	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696	} u;	1051	} *u;
697	struct dirent *entp;	1052	struct dirent *entp;
698	char *name, *names;	1053	char *name, *names;
699	int memlen = 4096;	1054	int memlen = 4096;
700	int memofs = 0;	1055	int memofs = 0;
701	int res = 0;	1056	int res = 0;
702	int errorno;	1057	int errorno;
703		1058
704	if (!dirp)	1059	LOCK (wrklock);
705	return -1;	1060	self->dirp = dirp = opendir (req->ptr1);
706		1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
707	names = malloc (memlen);	1063	req->ptr2 = names = malloc (memlen);
		1064	UNLOCK (wrklock);
		1065
		1066	if (dirp && u && names)
		1067	for (;;)
		1068	{
		1069	errno = 0;
		1070	readdir_r (dirp, &u->d, &entp);
		1071
		1072	if (!entp)
		1073	break;
		1074
		1075	name = entp->d_name;
		1076
		1077	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1078	{
		1079	int len = strlen (name) + 1;
		1080
		1081	res++;
		1082
		1083	while (memofs + len > memlen)
		1084	{
		1085	memlen *= 2;
		1086	LOCK (wrklock);
		1087	req->ptr2 = names = realloc (names, memlen);
		1088	UNLOCK (wrklock);
		1089
		1090	if (!names)
		1091	break;
		1092	}
		1093
		1094	memcpy (names + memofs, name, len);
		1095	memofs += len;
		1096	}
		1097	}
		1098
		1099	if (errno)
		1100	res = -1;
		1101
		1102	req->result = res;
		1103	}
		1104
		1105	/*****************************************************************************/
		1106
		1107	static void *aio_proc (void *thr_arg)
		1108	{
		1109	aio_req req;
		1110	struct timespec ts;
		1111	worker *self = (worker *)thr_arg;
		1112
		1113	/* try to distribute timeouts somewhat evenly */
		1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1115	* (1000000000UL / 1024UL);
708		1116
709	for (;;)	1117	for (;;)
710	{	1118	{
711	errno = 0, readdir_r (dirp, &u.d, &entp);	1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
712		1120
713	if (!entp)	1121	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		1122
762	for (;;)	1123	for (;;)
763	{	1124	{
764	req = reqs;	1125	self->req = req = reqq_shift (&req_queue);
765
766	if (reqs)
767	{
768	reqs = reqs->next;
769	if (!reqs) reqe = 0;
770	}
771		1126
772	if (req)	1127	if (req)
773	break;	1128	break;
774		1129
		1130	++idle;
		1131
		1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1133	== ETIMEDOUT)
		1134	{
		1135	if (idle > max_idle)
		1136	{
		1137	--idle;
		1138	UNLOCK (reqlock);
		1139	LOCK (wrklock);
		1140	--started;
		1141	UNLOCK (wrklock);
		1142	goto quit;
		1143	}
		1144
		1145	/* we are allowed to idle, so do so without any timeout */
775	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
776	}	1151	}
777		1152
778	pthread_mutex_unlock (&reqlock);	1153	--nready;
		1154
		1155	UNLOCK (reqlock);
779		1156
780	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
781		1158
782	if (!req->cancelled)	1159	if (!(req->flags & FLAG_CANCELLED))
783	switch (req->type)	1160	switch (req->type)
784	{	1161	{
785	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
786	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
787		1164
788	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1165	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;	1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
790		1167
791	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1168	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;	1169	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;	1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
794		1171
795	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
796	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
797	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
798	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
799	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
800	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
801	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
802		1182
803	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
804	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
805	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
806		1186
807	case REQ_SLEEP:	1187	case REQ_BUSY:
808	{	1188	{
809	struct timeval tv;	1189	struct timeval tv;
810		1190
811	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
812	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
813		1193
814	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
815	}	1195	}
816		1196
		1197	case REQ_GROUP:
		1198	case REQ_NOP:
		1199	break;
		1200
817	case REQ_QUIT:	1201	case REQ_QUIT:
818	break;	1202	goto quit;
819		1203
820	default:	1204	default:
821	req->result = ENOSYS;	1205	req->result = ENOSYS;
822	break;	1206	break;
823	}	1207	}
824		1208
825	req->errorno = errno;	1209	req->errorno = errno;
826		1210
827	pthread_mutex_lock (&reslock);	1211	LOCK (reslock);
828		1212
829	req->next = 0;	1213	++npending;
830		1214
831	if (rese)	1215	if (!reqq_push (&res_queue, req))
832	{	1216	{
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 */	1217	/* write a dummy byte to the pipe so fh becomes ready */
841	write (respipe [1], &respipe, 1);	1218	write (respipe [1], &respipe, 1);
		1219
		1220	/* optionally signal the main thread asynchronously */
		1221	if (main_sig)
		1222	pthread_kill (main_tid, main_sig);
842	}	1223	}
843		1224
844	pthread_mutex_unlock (&reslock);	1225	self->req = 0;
		1226	worker_clear (self);
		1227
		1228	UNLOCK (reslock);
845	}	1229	}
846	while (type != REQ_QUIT);	1230
		1231	quit:
		1232	LOCK (wrklock);
		1233	worker_free (self);
		1234	UNLOCK (wrklock);
847		1235
848	return 0;	1236	return 0;
849	}	1237	}
850		1238
851	/*****************************************************************************/	1239	/*****************************************************************************/
852		1240
853	static void atfork_prepare (void)	1241	static void atfork_prepare (void)
854	{	1242	{
855	pthread_mutex_lock (&reqlock);	1243	LOCK (wrklock);
856	pthread_mutex_lock (&reslock);	1244	LOCK (reqlock);
		1245	LOCK (reslock);
857	#if !HAVE_PREADWRITE	1246	#if !HAVE_PREADWRITE
858	pthread_mutex_lock (&preadwritelock);	1247	LOCK (preadwritelock);
859	#endif	1248	#endif
860	#if !HAVE_READDIR_R	1249	#if !HAVE_READDIR_R
861	pthread_mutex_lock (&readdirlock);	1250	LOCK (readdirlock);
862	#endif	1251	#endif
863	}	1252	}
864		1253
865	static void atfork_parent (void)	1254	static void atfork_parent (void)
866	{	1255	{
867	#if !HAVE_READDIR_R	1256	#if !HAVE_READDIR_R
868	pthread_mutex_unlock (&readdirlock);	1257	UNLOCK (readdirlock);
869	#endif	1258	#endif
870	#if !HAVE_PREADWRITE	1259	#if !HAVE_PREADWRITE
871	pthread_mutex_unlock (&preadwritelock);	1260	UNLOCK (preadwritelock);
872	#endif	1261	#endif
873	pthread_mutex_unlock (&reslock);	1262	UNLOCK (reslock);
874	pthread_mutex_unlock (&reqlock);	1263	UNLOCK (reqlock);
		1264	UNLOCK (wrklock);
875	}	1265	}
876		1266
877	static void atfork_child (void)	1267	static void atfork_child (void)
878	{	1268	{
879	aio_req prv;	1269	aio_req prv;
880		1270
881	started = 0;	1271	while (prv = reqq_shift (&req_queue))
		1272	req_free (prv);
882		1273
883	while (reqs)	1274	while (prv = reqq_shift (&res_queue))
		1275	req_free (prv);
		1276
		1277	while (wrk_first.next != &wrk_first)
884	{	1278	{
885	prv = reqs;	1279	worker *wrk = wrk_first.next;
886	reqs = prv->next;	1280
		1281	if (wrk->req)
		1282	req_free (wrk->req);
		1283
		1284	worker_clear (wrk);
887	req_free (prv);	1285	worker_free (wrk);
888	}	1286	}
889		1287
890	reqs = reqe = 0;	1288	started = 0;
891		1289	idle = 0;
892	while (ress)	1290	nreqs = 0;
893	{	1291	nready = 0;
894	prv = ress;	1292	npending = 0;
895	ress = prv->next;
896	req_free (prv);
897	}
898
899	ress = rese = 0;
900		1293
901	close (respipe [0]);	1294	close (respipe [0]);
902	close (respipe [1]);	1295	close (respipe [1]);
903	create_pipe ();	1296	create_pipe ();
904		1297
905	atfork_parent ();	1298	atfork_parent ();
906	}	1299	}
907		1300
908	#define dREQ \	1301	#define dREQ \
909	aio_req req; \	1302	aio_req req; \
		1303	int req_pri = next_pri; \
		1304	next_pri = DEFAULT_PRI + PRI_BIAS; \
910	\	1305	\
911	if (SvOK (callback) && !SvROK (callback)) \	1306	if (SvOK (callback) && !SvROK (callback)) \
912	croak ("callback must be undef or of reference type"); \	1307	croak ("callback must be undef or of reference type"); \
913	\	1308	\
914	Newz (0, req, 1, aio_cb); \	1309	Newz (0, req, 1, aio_cb); \
915	if (!req) \	1310	if (!req) \
916	croak ("out of memory during aio_req allocation"); \	1311	croak ("out of memory during aio_req allocation"); \
917	\	1312	\
918	req->callback = newSVsv (callback)	1313	req->callback = newSVsv (callback); \
		1314	req->pri = req_pri
919		1315
920	#define REQ_SEND \	1316	#define REQ_SEND \
921	req_send (req); \	1317	req_send (req); \
922	\	1318	\
923	if (GIMME_V != G_VOID) \	1319	if (GIMME_V != G_VOID) \
…		…
928	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
929		1325
930	BOOT:	1326	BOOT:
931	{	1327	{
932	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
933	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
936		1337
937	create_pipe ();	1338	create_pipe ();
938	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
939	}	1340	}
940		1341
941	void	1342	void
942	min_parallel (nthreads)	1343	max_poll_reqs (int nreqs)
943	int nthreads
944	PROTOTYPE: $	1344	PROTOTYPE: $
		1345	CODE:
		1346	max_poll_reqs = nreqs;
945		1347
946	void	1348	void
947	max_parallel (nthreads)	1349	max_poll_time (double nseconds)
948	int nthreads
949	PROTOTYPE: $	1350	PROTOTYPE: $
		1351	CODE:
		1352	max_poll_time = nseconds * AIO_TICKS;
		1353
		1354	void
		1355	min_parallel (int nthreads)
		1356	PROTOTYPE: $
		1357
		1358	void
		1359	max_parallel (int nthreads)
		1360	PROTOTYPE: $
		1361
		1362	void
		1363	max_idle (int nthreads)
		1364	PROTOTYPE: $
		1365	CODE:
		1366	set_max_idle (nthreads);
950		1367
951	int	1368	int
952	max_outstanding (nreqs)	1369	max_outstanding (int maxreqs)
953	int nreqs	1370	PROTOTYPE: $
954	PROTOTYPE: $
955	CODE:	1371	CODE:
956	RETVAL = max_outstanding;	1372	RETVAL = max_outstanding;
957	max_outstanding = nreqs;	1373	max_outstanding = maxreqs;
		1374	OUTPUT:
		1375	RETVAL
958		1376
959	void	1377	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
961	SV * pathname	1379	SV8 * pathname
962	int flags	1380	int flags
963	int mode	1381	int mode
964	SV * callback	1382	SV * callback
965	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
966	PPCODE:	1384	PPCODE:
967	{	1385	{
968	dREQ;	1386	dREQ;
969		1387
970	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
971	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
972	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
973	req->fd = flags;	1391	req->int1 = flags;
974	req->mode = mode;	1392	req->mode = mode;
975		1393
976	REQ_SEND;	1394	REQ_SEND;
977	}	1395	}
978		1396
…		…
988	PPCODE:	1406	PPCODE:
989	{	1407	{
990	dREQ;	1408	dREQ;
991		1409
992	req->type = ix;	1410	req->type = ix;
993	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
994	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
995		1413
996	REQ_SEND (req);	1414	REQ_SEND (req);
997	}	1415	}
998		1416
999	void	1417	void
1000	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1001	SV * fh	1419	SV * fh
1002	UV offset	1420	UV offset
1003	UV length	1421	UV length
1004	SV * data	1422	SV8 * data
1005	UV dataoffset	1423	UV dataoffset
1006	SV * callback	1424	SV * callback
1007	ALIAS:	1425	ALIAS:
1008	aio_read = REQ_READ	1426	aio_read = REQ_READ
1009	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1010	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1011	PPCODE:	1429	PPCODE:
1012	{	1430	{
1013	aio_req req;
1014	STRLEN svlen;	1431	STRLEN svlen;
1015	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1016		1433
1017	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1018	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1030	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1031	}	1448	}
1032	else	1449	else
1033	{	1450	{
1034	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1035	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1036	}	1453	}
1037		1454
1038	if (length < 0)	1455	if (length < 0)
1039	croak ("length must not be negative");	1456	croak ("length must not be negative");
1040		1457
1041	{	1458	{
1042	dREQ;	1459	dREQ;
1043		1460
1044	req->type = ix;	1461	req->type = ix;
1045	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1046	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1047	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1048	req->offset = offset;	1465	req->offs = offset;
1049	req->length = length;	1466	req->size = length;
1050	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1051	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1052		1470
1053	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1054	{	1472	{
1055	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1056	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1057	}	1475	}
1058		1476
1059	REQ_SEND;	1477	REQ_SEND;
1060	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		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->fh = newSVsv (path);
		1496	req->ptr2 = SvPVbyte_nolen (req->fh);
		1497	req->sv1 = data;
		1498	req->ptr1 = SvPVbyte_nolen (data);
		1499
		1500	REQ_SEND;
1061	}	1501	}
1062		1502
1063	void	1503	void
1064	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1065	SV * out_fh	1505	SV * out_fh
…		…
1071	PPCODE:	1511	PPCODE:
1072	{	1512	{
1073	dREQ;	1513	dREQ;
1074		1514
1075	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1076	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1077	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1078	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1079	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1080	req->offset = in_offset;	1520	req->offs = in_offset;
1081	req->length = length;	1521	req->size = length;
1082		1522
1083	REQ_SEND;	1523	REQ_SEND;
1084	}	1524	}
1085		1525
1086	void	1526	void
…		…
1093	PPCODE:	1533	PPCODE:
1094	{	1534	{
1095	dREQ;	1535	dREQ;
1096		1536
1097	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1098	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1099	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1100	req->offset = offset;	1540	req->offs = offset;
1101	req->length = length;	1541	req->size = length;
1102		1542
1103	REQ_SEND;	1543	REQ_SEND;
1104	}	1544	}
1105		1545
1106	void	1546	void
1107	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1108	SV * fh_or_path	1548	SV8 * fh_or_path
1109	SV * callback	1549	SV * callback
1110	ALIAS:	1550	ALIAS:
1111	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1112	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1113	PPCODE:	1553	PPCODE:
1114	{	1554	{
1115	dREQ;	1555	dREQ;
1116		1556
1117	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1118	if (!req->statdata)	1558	if (!req->ptr2)
1119	{	1559	{
1120	req_free (req);	1560	req_free (req);
1121	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1122	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1123		1565
1124	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1125	{	1567	{
1126	req->type = ix;	1568	req->type = ix;
1127	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1128	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1129	}	1571	}
1130	else	1572	else
1131	{	1573	{
1132	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1133	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1134	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1135	}	1577	}
1136		1578
1137	REQ_SEND;	1579	REQ_SEND;
1138	}	1580	}
1139		1581
1140	void	1582	void
1141	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1142	SV * pathname	1584	SV8 * pathname
1143	SV * callback	1585	SV * callback
1144	ALIAS:	1586	ALIAS:
1145	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1146	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1147	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1148	PPCODE:	1590	PPCODE:
1149	{	1591	{
1150	dREQ;	1592	dREQ;
1151		1593
1152	req->type = ix;	1594	req->type = ix;
1153	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1154	req->dataptr = SvPVbyte_nolen (req->data);	1596	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
		1603	SV8 * pathname
		1604	UV mode
		1605	SV * callback
		1606	PPCODE:
		1607	{
		1608	dREQ;
1155		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1156	REQ_SEND;	1615	REQ_SEND;
1157	}	1616	}
1158		1617
1159	void	1618	void
1160	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1161	SV * oldpath	1620	SV8 * oldpath
1162	SV * newpath	1621	SV8 * newpath
1163	SV * callback	1622	SV * callback
1164	ALIAS:	1623	ALIAS:
1165	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1166	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1167	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1168	PPCODE:	1627	PPCODE:
1169	{	1628	{
1170	dREQ;	1629	dREQ;
1171		1630
1172	req->type = ix;	1631	req->type = ix;
1173	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1174	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1175	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1176	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1177		1636
1178	REQ_SEND;	1637	REQ_SEND;
1179	}	1638	}
1180		1639
1181	void	1640	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1183	double delay	1642	SV8 * pathname
		1643	UV mode
		1644	UV dev
1184	SV * callback	1645	SV * callback
1185	PPCODE:	1646	PPCODE:
1186	{	1647	{
1187	dREQ;	1648	dREQ;
		1649
		1650	req->type = REQ_MKNOD;
		1651	req->sv1 = newSVsv (pathname);
		1652	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1653	req->mode = (mode_t)mode;
		1654	req->offs = dev;
		1655
		1656	REQ_SEND;
		1657	}
1188		1658
		1659	void
		1660	aio_busy (delay,callback=&PL_sv_undef)
		1661	double delay
		1662	SV * callback
		1663	PPCODE:
		1664	{
		1665	dREQ;
		1666
1189	req->type = REQ_SLEEP;	1667	req->type = REQ_BUSY;
1190	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1192		1670
1193	REQ_SEND;	1671	REQ_SEND;
1194	}	1672	}
1195		1673
1196	void	1674	void
…		…
1198	SV * callback	1676	SV * callback
1199	PROTOTYPE: ;$	1677	PROTOTYPE: ;$
1200	PPCODE:	1678	PPCODE:
1201	{	1679	{
1202	dREQ;	1680	dREQ;
		1681
1203	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1204	req_send (req);	1684	req_send (req);
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1206	}	1686	}
		1687
		1688	void
		1689	aio_nop (callback=&PL_sv_undef)
		1690	SV * callback
		1691	PPCODE:
		1692	{
		1693	dREQ;
		1694
		1695	req->type = REQ_NOP;
		1696
		1697	REQ_SEND;
		1698	}
		1699
		1700	int
		1701	aioreq_pri (int pri = 0)
		1702	PROTOTYPE: ;$
		1703	CODE:
		1704	RETVAL = next_pri - PRI_BIAS;
		1705	if (items > 0)
		1706	{
		1707	if (pri < PRI_MIN) pri = PRI_MIN;
		1708	if (pri > PRI_MAX) pri = PRI_MAX;
		1709	next_pri = pri + PRI_BIAS;
		1710	}
		1711	OUTPUT:
		1712	RETVAL
		1713
		1714	void
		1715	aioreq_nice (int nice = 0)
		1716	CODE:
		1717	nice = next_pri - nice;
		1718	if (nice < PRI_MIN) nice = PRI_MIN;
		1719	if (nice > PRI_MAX) nice = PRI_MAX;
		1720	next_pri = nice + PRI_BIAS;
1207		1721
1208	void	1722	void
1209	flush ()	1723	flush ()
1210	PROTOTYPE:	1724	PROTOTYPE:
1211	CODE:	1725	CODE:
…		…
1213	{	1727	{
1214	poll_wait ();	1728	poll_wait ();
1215	poll_cb ();	1729	poll_cb ();
1216	}	1730	}
1217		1731
1218	void	1732	int
1219	poll()	1733	poll()
1220	PROTOTYPE:	1734	PROTOTYPE:
1221	CODE:	1735	CODE:
1222	if (nreqs)
1223	{
1224	poll_wait ();	1736	poll_wait ();
1225	poll_cb ();	1737	RETVAL = poll_cb ();
1226	}	1738	OUTPUT:
		1739	RETVAL
1227		1740
1228	int	1741	int
1229	poll_fileno()	1742	poll_fileno()
1230	PROTOTYPE:	1743	PROTOTYPE:
1231	CODE:	1744	CODE:
…		…
1243		1756
1244	void	1757	void
1245	poll_wait()	1758	poll_wait()
1246	PROTOTYPE:	1759	PROTOTYPE:
1247	CODE:	1760	CODE:
1248	if (nreqs)
1249	poll_wait ();	1761	poll_wait ();
		1762
		1763	void
		1764	setsig (int signum = SIGIO)
		1765	PROTOTYPE: ;$
		1766	CODE:
		1767	{
		1768	if (block_sig_level)
		1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1770
		1771	LOCK (reslock);
		1772	main_tid = pthread_self ();
		1773	main_sig = signum;
		1774	UNLOCK (reslock);
		1775
		1776	if (main_sig && npending)
		1777	pthread_kill (main_tid, main_sig);
		1778	}
		1779
		1780	void
		1781	aio_block (SV *cb)
		1782	PROTOTYPE: &
		1783	PPCODE:
		1784	{
		1785	int count;
		1786
		1787	block_sig ();
		1788	PUSHMARK (SP);
		1789	PUTBACK;
		1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1791	SPAGAIN;
		1792	unblock_sig ();
		1793
		1794	if (SvTRUE (ERRSV))
		1795	croak (0);
		1796
		1797	XSRETURN (count);
		1798	}
1250		1799
1251	int	1800	int
1252	nreqs()	1801	nreqs()
1253	PROTOTYPE:	1802	PROTOTYPE:
1254	CODE:	1803	CODE:
1255	RETVAL = nreqs;	1804	RETVAL = nreqs;
1256	OUTPUT:	1805	OUTPUT:
1257	RETVAL	1806	RETVAL
1258		1807
1259	PROTOTYPES: DISABLE	1808	int
1260		1809	nready()
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262
1263	void
1264	cancel (aio_req_ornot req)
1265	PROTOTYPE:	1810	PROTOTYPE:
1266	CODE:	1811	CODE:
		1812	RETVAL = get_nready ();
		1813	OUTPUT:
		1814	RETVAL
		1815
		1816	int
		1817	npending()
		1818	PROTOTYPE:
		1819	CODE:
		1820	RETVAL = get_npending ();
		1821	OUTPUT:
		1822	RETVAL
		1823
		1824	int
		1825	nthreads()
		1826	PROTOTYPE:
		1827	CODE:
		1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1829	RETVAL = started;
		1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1831	OUTPUT:
		1832	RETVAL
		1833
		1834	PROTOTYPES: DISABLE
		1835
		1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1837
		1838	void
		1839	cancel (aio_req_ornot req)
		1840	CODE:
1267	req_cancel (req);	1841	req_cancel (req);
		1842
		1843	void
		1844	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1845	CODE:
		1846	SvREFCNT_dec (req->callback);
		1847	req->callback = newSVsv (callback);
1268		1848
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		1850
1271	void	1851	void
1272	add (aio_req grp, ...)	1852	add (aio_req grp, ...)
1273	PPCODE:	1853	PPCODE:
1274	{	1854	{
1275	int i;	1855	int i;
		1856	aio_req req;
1276		1857
		1858	if (main_sig && !block_sig_level)
		1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1860
1277	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1278	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279		1863
1280	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1281	{	1865	{
1282	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1867	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		1868
1285	aio_req req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1286		1870
1287	if (req)	1871	if (req)
1288	{	1872	{
1289	++grp->length;	1873	++grp->size;
1290	req->grp = grp;	1874	req->grp = grp;
1291		1875
1292	req->grp_prev = 0;	1876	req->grp_prev = 0;
1293	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1294		1878
…		…
1299	}	1883	}
1300	}	1884	}
1301	}	1885	}
1302		1886
1303	void	1887	void
		1888	cancel_subs (aio_req_ornot req)
		1889	CODE:
		1890	req_cancel_subs (req);
		1891
		1892	void
1304	result (aio_req grp, ...)	1893	result (aio_req grp, ...)
		1894	CODE:
		1895	{
		1896	int i;
		1897	AV *av;
		1898
		1899	grp->errorno = errno;
		1900
		1901	av = newAV ();
		1902
		1903	for (i = 1; i < items; ++i )
		1904	av_push (av, newSVsv (ST (i)));
		1905
		1906	SvREFCNT_dec (grp->sv1);
		1907	grp->sv1 = (SV *)av;
		1908	}
		1909
		1910	void
		1911	errno (aio_req grp, int errorno = errno)
		1912	CODE:
		1913	grp->errorno = errorno;
		1914
		1915	void
		1916	limit (aio_req grp, int limit)
1305	CODE:	1917	CODE:
1306	{	1918	grp->int2 = limit;
1307	int i;	1919	aio_grp_feed (grp);
1308	AV *av = newAV ();
1309		1920
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	1921	void
1318	feeder_limit (aio_req grp, int limit)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1319	CODE:	1923	CODE:
1320	grp->fd2 = limit;	1924	{
		1925	SvREFCNT_dec (grp->sv2);
		1926	grp->sv2 = newSVsv (callback);
		1927
		1928	if (grp->int2 <= 0)
		1929	grp->int2 = 2;
		1930
1321	aio_grp_feed (grp);	1931	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	}	1932	}
1335		1933

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