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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.60 by root, Mon Oct 23 20:05:27 2006 UTC vs.
Revision 1.94 by root, Sun Nov 26 18:28:37 2006 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_RENAME,
58	REQ_READDIR,	103	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_GROUP, REQ_NOP,	105	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,	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
71	SV *data, *callback;	116	SV *callback, *fh;
72	SV *fh, *fh2;	117	SV *sv1, *sv2;
73	void *dataptr, *data2ptr;	118	void *ptr1, *ptr2;
74	Stat_t *statdata;
75	off_t offset;	119	off_t offs;
76	size_t length;	120	size_t size;
77	ssize_t result;	121	ssize_t result;
78		122
79	STRLEN dataoffset;	123	STRLEN stroffset;
80	int type;	124	int type;
81	int fd, fd2;	125	int int1, int2;
82	int errorno;	126	int errorno;
83	mode_t mode; /* open */	127	mode_t mode; /* open */
84		128
85	unsigned char flags;	129	unsigned char flags;
86	unsigned char pri;	130	unsigned char pri;
…		…
88	SV *self; /* the perl counterpart of this request, if any */	132	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;	134	} aio_cb;
91		135
92	enum {	136	enum {
93	FLAG_CANCELLED = 0x01,	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) */
94	};	140	};
95		141
96	typedef aio_cb *aio_req;	142	typedef aio_cb *aio_req;
97	typedef aio_cb *aio_req_ornot;	143	typedef aio_cb *aio_req_ornot;
98		144
99	enum {	145	enum {
100	PRI_MIN = 4,	146	PRI_MIN = -4,
101	PRI_MAX = -4,	147	PRI_MAX = 4,
102		148
103	DEFAULT_PRI = 0,	149	DEFAULT_PRI = 0,
104	PRI_BIAS = PRI_MIN,	150	PRI_BIAS = -PRI_MIN,
		151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
105	};	152	};
106		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
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;	200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108		201
109	static int started, wanted;	202	static unsigned int started, idle, wanted;
110	static volatile int nreqs;	203
111	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;
112	static int respipe [2];	256	static int respipe [2];
113		257
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		261
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	262	#if WORDACCESS_UNSAFE
119	static volatile aio_req ress, rese; /* queue start, queue end */
120		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 ();
121	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
122	static void req_free (aio_req req);	361	static void req_free (aio_req req);
		362	static void req_cancel (aio_req req);
123		363
124	/* must be called at most once */	364	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
126	{	366	{
127	if (!req->self)	367	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	386	}
147		387
148	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
149	{	389	{
		390	block_sig ();
		391
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
151	{	393	{
152	int old_len = grp->length;	394	int old_len = grp->size;
153		395
154	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
155	{	397	{
156	dSP;	398	dSP;
157		399
158	ENTER;	400	ENTER;
159	SAVETMPS;	401	SAVETMPS;
160	PUSHMARK (SP);	402	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;	404	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
164	SPAGAIN;	406	SPAGAIN;
165	FREETMPS;	407	FREETMPS;
166	LEAVE;	408	LEAVE;
167	}	409	}
168		410
169	/* stop if no progress has been made */	411	/* stop if no progress has been made */
170	if (old_len == grp->length)	412	if (old_len == grp->size)
171	{	413	{
172	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
173	grp->fh2 = 0;	415	grp->sv2 = 0;
174	break;	416	break;
175	}	417	}
176	}	418	}
		419
		420	unblock_sig ();
177	}	421	}
178		422
179	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
180	{	424	{
181	--grp->length;	425	--grp->size;
182		426
183	/* call feeder, if applicable */	427	/* call feeder, if applicable */
184	aio_grp_feed (grp);	428	aio_grp_feed (grp);
185		429
186	/* finish, if done */	430	/* finish, if done */
187	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
188	{	432	{
		433	block_sig ();
		434
189	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
190	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
191	}	444	}
192	}	445	}
193		446
194	static void poll_wait ()	447	static int req_invoke (aio_req req)
195	{	448	{
196	while (nreqs)	449	dSP;
		450
		451	if (req->flags & FLAG_SV1_RO_OFF)
		452	SvREADONLY_off (req->sv1);
		453
		454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
197	{	455	{
198	aio_req req;	456	ENTER;
199	pthread_mutex_lock (&reslock);	457	SAVETMPS;
200	req = ress;	458	PUSHMARK (SP);
201	pthread_mutex_unlock (&reslock);	459	EXTEND (SP, 1);
202		460
203	if (req)	461	switch (req->type)
204	return;	462	{
		463	case REQ_READDIR:
		464	{
		465	SV *rv = &PL_sv_undef;
205		466
206	fd_set rfd;	467	if (req->result >= 0)
207	FD_ZERO(&rfd);	468	{
208	FD_SET(respipe [0], &rfd);	469	int i;
		470	char *buf = req->ptr2;
		471	AV *av = newAV ();
209		472
210	select (respipe [0] + 1, &rfd, 0, 0, 0);	473	av_extend (av, req->result - 1);
		474
		475	for (i = 0; i < req->result; ++i)
		476	{
		477	SV *sv = newSVpv (buf, 0);
		478
		479	av_store (av, i, sv);
		480	buf += SvCUR (sv) + 1;
		481	}
		482
		483	rv = sv_2mortal (newRV_noinc ((SV *)av));
		484	}
		485
		486	PUSHs (rv);
		487	}
		488	break;
		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);
		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;
		551	}
		552
		553	errno = req->errorno;
		554
		555	PUTBACK;
		556	call_sv (req->callback, G_VOID | G_EVAL);
		557	SPAGAIN;
		558
		559	FREETMPS;
		560	LEAVE;
211	}	561	}
212	}
213		562
214	static void req_invoke (aio_req req)
215	{
216	dSP;
217	int errorno = errno;
218
219	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220	return;
221
222	errno = req->errorno;
223
224	ENTER;
225	SAVETMPS;
226	PUSHMARK (SP);
227	EXTEND (SP, 1);
228
229	switch (req->type)
230	{
231	case REQ_READDIR:
232	{
233	SV *rv = &PL_sv_undef;
234
235	if (req->result >= 0)
236	{
237	char *buf = req->data2ptr;
238	AV *av = newAV ();
239
240	while (req->result)
241	{
242	SV *sv = newSVpv (buf, 0);
243
244	av_push (av, sv);
245	buf += SvCUR (sv) + 1;
246	req->result--;
247	}
248
249	rv = sv_2mortal (newRV_noinc ((SV *)av));
250	}
251
252	PUSHs (rv);
253	}
254	break;
255
256	case REQ_OPEN:
257	{
258	/* convert fd to fh */
259	SV *fh;
260
261	PUSHs (sv_2mortal (newSViv (req->result)));
262	PUTBACK;
263	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264	SPAGAIN;
265
266	fh = SvREFCNT_inc (POPs);
267
268	PUSHMARK (SP);
269	XPUSHs (sv_2mortal (fh));
270	}
271	break;
272
273	case REQ_GROUP:
274	req->fd = 2; /* mark group as finished */
275
276	if (req->data)
277	{
278	int i;
279	AV *av = (AV *)req->data;
280
281	EXTEND (SP, AvFILL (av) + 1);
282	for (i = 0; i <= AvFILL (av); ++i)
283	PUSHs (*av_fetch (av, i, 0));
284	}
285	break;
286
287	case REQ_NOP:
288	case REQ_SLEEP:
289	break;
290
291	default:
292	PUSHs (sv_2mortal (newSViv (req->result)));
293	break;
294	}
295
296
297	PUTBACK;
298	call_sv (req->callback, G_VOID | G_EVAL);
299	SPAGAIN;
300
301	FREETMPS;
302	LEAVE;
303
304	errno = errorno;
305
306	if (SvTRUE (ERRSV))
307	{
308	req_free (req);
309	croak (0);
310	}
311	}
312
313	static void req_free (aio_req req)
314	{
315	if (req->grp)	563	if (req->grp)
316	{	564	{
317	aio_req grp = req->grp;	565	aio_req grp = req->grp;
318		566
319	/* unlink request */	567	/* unlink request */
…		…
324	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
325		573
326	aio_grp_dec (grp);	574	aio_grp_dec (grp);
327	}	575	}
328		576
		577	return !SvTRUE (ERRSV);
		578	}
		579
		580	static void req_free (aio_req req)
		581	{
329	if (req->self)	582	if (req->self)
330	{	583	{
331	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
332	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
333	}	586	}
334		587
335	SvREFCNT_dec (req->data);
336	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
337	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
338	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
339	Safefree (req->statdata);
340		592
341	if (req->type == REQ_READDIR && req->result >= 0)	593	if (req->flags & FLAG_PTR2_FREE)
342	free (req->data2ptr);	594	free (req->ptr2);
343		595
344	Safefree (req);	596	Safefree (req);
345	}	597	}
346		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
347	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
348	{	614	{
349	req->flags |= FLAG_CANCELLED;	615	req->flags |= FLAG_CANCELLED;
350		616
351	if (req->type == REQ_GROUP)	617	req_cancel_subs (req);
352	{
353	aio_req sub;
354
355	for (sub = req->grp_first; sub; sub = sub->grp_next)
356	req_cancel (sub);
357	}
358	}
359
360	static int poll_cb ()
361	{
362	dSP;
363	int count = 0;
364	int do_croak = 0;
365	aio_req req;
366
367	for (;;)
368	{
369	pthread_mutex_lock (&reslock);
370	req = ress;
371
372	if (req)
373	{
374	ress = req->next;
375
376	if (!ress)
377	{
378	/* read any signals sent by the worker threads */
379	char buf [32];
380	while (read (respipe [0], buf, 32) == 32)
381	;
382
383	rese = 0;
384	}
385	}
386
387	pthread_mutex_unlock (&reslock);
388
389	if (!req)
390	break;
391
392	--nreqs;
393
394	if (req->type == REQ_QUIT)
395	started--;
396	else if (req->type == REQ_GROUP && req->length)
397	{
398	req->fd = 1; /* mark request as delayed */
399	continue;
400	}
401	else
402	{
403	if (req->type == REQ_READ)
404	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407	SvREADONLY_off (req->data);
408
409	if (req->statdata)
410	{
411	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412	PL_laststatval = req->result;
413	PL_statcache = *(req->statdata);
414	}
415
416	req_invoke (req);
417
418	count++;
419	}
420
421	req_free (req);
422	}
423
424	return count;
425	}	618	}
426		619
427	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
428		621
429	static void start_thread (void)	622	static void start_thread (void)
430	{	623	{
431	sigset_t fullsigset, oldsigset;	624	sigset_t fullsigset, oldsigset;
432	pthread_t tid;
433	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");
434		631
435	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
436	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
437	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
438		638
439	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
		640
		641	LOCK (wrklock);
440	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
441		643
442	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
443	started++;
444
445	sigprocmask (SIG_SETMASK, &oldsigset, 0);
446	}
447
448	static void req_send (aio_req req)
449	{
450	while (started < wanted && nreqs >= started)
451	start_thread ();
452
453	++nreqs;
454
455	pthread_mutex_lock (&reqlock);
456
457	req->next = 0;
458
459	if (reqe)
460	{	645	{
461	reqe->next = req;	646	wrk->prev = &wrk_first;
462	reqe = req;	647	wrk->next = wrk_first.next;
		648	wrk_first.next->prev = wrk;
		649	wrk_first.next = wrk;
		650	++started;
463	}	651	}
464	else	652	else
465	reqe = reqs = req;	653	free (wrk);
466		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);
467	pthread_cond_signal (&reqwait);	680	pthread_cond_signal (&reqwait);
468	pthread_mutex_unlock (&reqlock);	681	UNLOCK (reqlock);
469		682
470	if (nreqs > max_outstanding)	683	unblock_sig ();
471	for (;;)
472	{
473	poll_cb ();
474		684
475	if (nreqs <= max_outstanding)	685	maybe_start_thread ();
476	break;
477
478	poll_wait ();
479	}
480	}	686	}
481		687
482	static void end_thread (void)	688	static void end_thread (void)
483	{	689	{
484	aio_req req;	690	aio_req req;
		691
485	Newz (0, req, 1, aio_cb);	692	Newz (0, req, 1, aio_cb);
		693
486	req->type = REQ_QUIT;	694	req->type = REQ_QUIT;
		695	req->pri = PRI_MAX + PRI_BIAS;
487		696
488	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);
489	}	712	}
490		713
491	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
492	{	715	{
493	if (wanted < nthreads)	716	if (wanted < nthreads)
494	wanted = nthreads;	717	wanted = nthreads;
495	}	718	}
496		719
497	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
498	{	721	{
499	int cur = started;
500
501	if (wanted > nthreads)	722	if (wanted > nthreads)
502	wanted = nthreads;	723	wanted = nthreads;
503		724
504	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)
505	{	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
506	end_thread ();	743	maybe_start_thread ();
507	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
508	}	749	}
		750	}
509		751
510	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 (;;)
511	{	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 [32];
		783	while (read (respipe [0], buf, 32) == 32)
		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
512	poll_wait ();	829	poll_wait ();
513	poll_cb ();	830
		831	++maxreqs;
514	}	832	}
		833
		834	unblock_sig ();
		835	return count;
515	}	836	}
516		837
517	static void create_pipe ()	838	static void create_pipe ()
518	{	839	{
519	if (pipe (respipe))	840	if (pipe (respipe))
…		…
543	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)
544	{	865	{
545	ssize_t res;	866	ssize_t res;
546	off_t ooffset;	867	off_t ooffset;
547		868
548	pthread_mutex_lock (&preadwritelock);	869	LOCK (preadwritelock);
549	ooffset = lseek (fd, 0, SEEK_CUR);	870	ooffset = lseek (fd, 0, SEEK_CUR);
550	lseek (fd, offset, SEEK_SET);	871	lseek (fd, offset, SEEK_SET);
551	res = read (fd, buf, count);	872	res = read (fd, buf, count);
552	lseek (fd, ooffset, SEEK_SET);	873	lseek (fd, ooffset, SEEK_SET);
553	pthread_mutex_unlock (&preadwritelock);	874	UNLOCK (preadwritelock);
554		875
555	return res;	876	return res;
556	}	877	}
557		878
558	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)
559	{	880	{
560	ssize_t res;	881	ssize_t res;
561	off_t ooffset;	882	off_t ooffset;
562		883
563	pthread_mutex_lock (&preadwritelock);	884	LOCK (preadwritelock);
564	ooffset = lseek (fd, 0, SEEK_CUR);	885	ooffset = lseek (fd, 0, SEEK_CUR);
565	lseek (fd, offset, SEEK_SET);	886	lseek (fd, offset, SEEK_SET);
566	res = write (fd, buf, count);	887	res = write (fd, buf, count);
567	lseek (fd, offset, SEEK_SET);	888	lseek (fd, offset, SEEK_SET);
568	pthread_mutex_unlock (&preadwritelock);	889	UNLOCK (preadwritelock);
569		890
570	return res;	891	return res;
571	}	892	}
572	#endif	893	#endif
573		894
574	#if !HAVE_FDATASYNC	895	#if !HAVE_FDATASYNC
575	# define fdatasync fsync	896	# define fdatasync fsync
576	#endif	897	#endif
577		898
578	#if !HAVE_READAHEAD	899	#if !HAVE_READAHEAD
579	# define readahead aio_readahead	900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
580		901
581	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)
582	{	903	{
583	char readahead_buf[4096];	904	dBUF;
584		905
585	while (count > 0)	906	while (count > 0)
586	{	907	{
587	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
588		909
589	pread (fd, readahead_buf, len, offset);	910	pread (fd, aio_buf, len, offset);
590	offset += len;	911	offset += len;
591	count -= len;	912	count -= len;
592	}	913	}
593		914
594	errno = 0;	915	errno = 0;
595	}	916	}
		917
596	#endif	918	#endif
597		919
598	#if !HAVE_READDIR_R	920	#if !HAVE_READDIR_R
599	# define readdir_r aio_readdir_r	921	# define readdir_r aio_readdir_r
600		922
…		…
603	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)
604	{	926	{
605	struct dirent *e;	927	struct dirent *e;
606	int errorno;	928	int errorno;
607		929
608	pthread_mutex_lock (&readdirlock);	930	LOCK (readdirlock);
609		931
610	e = readdir (dirp);	932	e = readdir (dirp);
611	errorno = errno;	933	errorno = errno;
612		934
613	if (e)	935	if (e)
…		…
616	strcpy (ent->d_name, e->d_name);	938	strcpy (ent->d_name, e->d_name);
617	}	939	}
618	else	940	else
619	*res = 0;	941	*res = 0;
620		942
621	pthread_mutex_unlock (&readdirlock);	943	UNLOCK (readdirlock);
622		944
623	errno = errorno;	945	errno = errorno;
624	return e ? 0 : -1;	946	return e ? 0 : -1;
625	}	947	}
626	#endif	948	#endif
627		949
628	/* sendfile always needs emulation */	950	/* sendfile always needs emulation */
629	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)
630	{	952	{
631	ssize_t res;	953	ssize_t res;
632		954
633	if (!count)	955	if (!count)
634	return 0;	956	return 0;
…		…
645	{	967	{
646	off_t sbytes;	968	off_t sbytes;
647	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648		970
649	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
650	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
651	res = sbytes;	973	res = sbytes;
652	}	974	}
653		975
654	# elif __hpux	976	# elif __hpux
655	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
683	#endif	1005	#endif
684	)	1006	)
685	)	1007	)
686	{	1008	{
687	/* emulate sendfile. this is a major pain in the ass */	1009	/* emulate sendfile. this is a major pain in the ass */
688	char buf[4096];	1010	dBUF;
		1011
689	res = 0;	1012	res = 0;
690		1013
691	while (count)	1014	while (count)
692	{	1015	{
693	ssize_t cnt;	1016	ssize_t cnt;
694		1017
695	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
696		1019
697	if (cnt <= 0)	1020	if (cnt <= 0)
698	{	1021	{
699	if (cnt && !res) res = -1;	1022	if (cnt && !res) res = -1;
700	break;	1023	break;
701	}	1024	}
702		1025
703	cnt = write (ofd, buf, cnt);	1026	cnt = write (ofd, aio_buf, cnt);
704		1027
705	if (cnt <= 0)	1028	if (cnt <= 0)
706	{	1029	{
707	if (cnt && !res) res = -1;	1030	if (cnt && !res) res = -1;
708	break;	1031	break;
…		…
716		1039
717	return res;	1040	return res;
718	}	1041	}
719		1042
720	/* read a full directory */	1043	/* read a full directory */
721	static int scandir_ (const char *path, void **namesp)	1044	static void scandir_ (aio_req req, worker *self)
722	{	1045	{
723	DIR *dirp = opendir (path);	1046	DIR *dirp;
724	union	1047	union
725	{	1048	{
726	struct dirent d;	1049	struct dirent d;
727	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
728	} u;	1051	} *u;
729	struct dirent *entp;	1052	struct dirent *entp;
730	char *name, *names;	1053	char *name, *names;
731	int memlen = 4096;	1054	int memlen = 4096;
732	int memofs = 0;	1055	int memofs = 0;
733	int res = 0;	1056	int res = 0;
734	int errorno;	1057	int errorno;
735		1058
736	if (!dirp)	1059	LOCK (wrklock);
737	return -1;	1060	self->dirp = dirp = opendir (req->ptr1);
738		1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
739	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);
740		1116
741	for (;;)	1117	for (;;)
742	{	1118	{
743	errno = 0, readdir_r (dirp, &u.d, &entp);	1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
744		1120
745	if (!entp)	1121	LOCK (reqlock);
746	break;
747
748	name = entp->d_name;
749
750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751	{
752	int len = strlen (name) + 1;
753
754	res++;
755
756	while (memofs + len > memlen)
757	{
758	memlen *= 2;
759	names = realloc (names, memlen);
760	if (!names)
761	break;
762	}
763
764	memcpy (names + memofs, name, len);
765	memofs += len;
766	}
767	}
768
769	errorno = errno;
770	closedir (dirp);
771
772	if (errorno)
773	{
774	free (names);
775	errno = errorno;
776	res = -1;
777	}
778
779	*namesp = (void *)names;
780	return res;
781	}
782
783	/*****************************************************************************/
784
785	static void *aio_proc (void *thr_arg)
786	{
787	aio_req req;
788	int type;
789
790	do
791	{
792	pthread_mutex_lock (&reqlock);
793		1122
794	for (;;)	1123	for (;;)
795	{	1124	{
796	req = reqs;	1125	self->req = req = reqq_shift (&req_queue);
797
798	if (reqs)
799	{
800	reqs = reqs->next;
801	if (!reqs) reqe = 0;
802	}
803		1126
804	if (req)	1127	if (req)
805	break;	1128	break;
806		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 */
807	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
808	}	1151	}
809		1152
810	pthread_mutex_unlock (&reqlock);	1153	--nready;
		1154
		1155	UNLOCK (reqlock);
811		1156
812	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
813	type = req->type; /* remember type for QUIT check */
814		1158
815	if (!(req->flags & FLAG_CANCELLED))	1159	if (!(req->flags & FLAG_CANCELLED))
816	switch (type)	1160	switch (req->type)
817	{	1161	{
818	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;
819	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;
820		1164
821	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;
822	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;
823		1167
824	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;
825	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;
826	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;
827		1171
828	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;
829	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
830	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
831	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
832	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1176	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
833	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1177	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
834	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1178	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1179	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1180	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
835		1181
836	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1182	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
837	case REQ_FSYNC: req->result = fsync (req->fd); break;	1183	case REQ_FSYNC: req->result = fsync (req->int1); break;
838	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1184	case REQ_READDIR: scandir_ (req, self); break;
839		1185
840	case REQ_SLEEP:	1186	case REQ_BUSY:
841	{	1187	{
842	struct timeval tv;	1188	struct timeval tv;
843		1189
844	tv.tv_sec = req->fd;	1190	tv.tv_sec = req->int1;
845	tv.tv_usec = req->fd2;	1191	tv.tv_usec = req->int2;
846		1192
847	req->result = select (0, 0, 0, 0, &tv);	1193	req->result = select (0, 0, 0, 0, &tv);
848	}	1194	}
849		1195
850	case REQ_GROUP:	1196	case REQ_GROUP:
851	case REQ_NOP:	1197	case REQ_NOP:
		1198	break;
		1199
852	case REQ_QUIT:	1200	case REQ_QUIT:
853	break;	1201	goto quit;
854		1202
855	default:	1203	default:
856	req->result = ENOSYS;	1204	req->result = ENOSYS;
857	break;	1205	break;
858	}	1206	}
859		1207
860	req->errorno = errno;	1208	req->errorno = errno;
861		1209
862	pthread_mutex_lock (&reslock);	1210	LOCK (reslock);
863		1211
864	req->next = 0;	1212	++npending;
865		1213
866	if (rese)	1214	if (!reqq_push (&res_queue, req))
867	{	1215	{
868	rese->next = req;
869	rese = req;
870	}
871	else
872	{
873	rese = ress = req;
874
875	/* write a dummy byte to the pipe so fh becomes ready */	1216	/* write a dummy byte to the pipe so fh becomes ready */
876	write (respipe [1], &respipe, 1);	1217	write (respipe [1], &respipe, 1);
		1218
		1219	/* optionally signal the main thread asynchronously */
		1220	if (main_sig)
		1221	pthread_kill (main_tid, main_sig);
877	}	1222	}
878		1223
879	pthread_mutex_unlock (&reslock);	1224	self->req = 0;
		1225	worker_clear (self);
		1226
		1227	UNLOCK (reslock);
880	}	1228	}
881	while (type != REQ_QUIT);	1229
		1230	quit:
		1231	LOCK (wrklock);
		1232	worker_free (self);
		1233	UNLOCK (wrklock);
882		1234
883	return 0;	1235	return 0;
884	}	1236	}
885		1237
886	/*****************************************************************************/	1238	/*****************************************************************************/
887		1239
888	static void atfork_prepare (void)	1240	static void atfork_prepare (void)
889	{	1241	{
890	pthread_mutex_lock (&reqlock);	1242	LOCK (wrklock);
891	pthread_mutex_lock (&reslock);	1243	LOCK (reqlock);
		1244	LOCK (reslock);
892	#if !HAVE_PREADWRITE	1245	#if !HAVE_PREADWRITE
893	pthread_mutex_lock (&preadwritelock);	1246	LOCK (preadwritelock);
894	#endif	1247	#endif
895	#if !HAVE_READDIR_R	1248	#if !HAVE_READDIR_R
896	pthread_mutex_lock (&readdirlock);	1249	LOCK (readdirlock);
897	#endif	1250	#endif
898	}	1251	}
899		1252
900	static void atfork_parent (void)	1253	static void atfork_parent (void)
901	{	1254	{
902	#if !HAVE_READDIR_R	1255	#if !HAVE_READDIR_R
903	pthread_mutex_unlock (&readdirlock);	1256	UNLOCK (readdirlock);
904	#endif	1257	#endif
905	#if !HAVE_PREADWRITE	1258	#if !HAVE_PREADWRITE
906	pthread_mutex_unlock (&preadwritelock);	1259	UNLOCK (preadwritelock);
907	#endif	1260	#endif
908	pthread_mutex_unlock (&reslock);	1261	UNLOCK (reslock);
909	pthread_mutex_unlock (&reqlock);	1262	UNLOCK (reqlock);
		1263	UNLOCK (wrklock);
910	}	1264	}
911		1265
912	static void atfork_child (void)	1266	static void atfork_child (void)
913	{	1267	{
914	aio_req prv;	1268	aio_req prv;
915		1269
916	started = 0;	1270	while (prv = reqq_shift (&req_queue))
		1271	req_free (prv);
917		1272
918	while (reqs)	1273	while (prv = reqq_shift (&res_queue))
		1274	req_free (prv);
		1275
		1276	while (wrk_first.next != &wrk_first)
919	{	1277	{
920	prv = reqs;	1278	worker *wrk = wrk_first.next;
921	reqs = prv->next;	1279
		1280	if (wrk->req)
		1281	req_free (wrk->req);
		1282
		1283	worker_clear (wrk);
922	req_free (prv);	1284	worker_free (wrk);
923	}	1285	}
924		1286
925	reqs = reqe = 0;	1287	started = 0;
926		1288	idle = 0;
927	while (ress)	1289	nreqs = 0;
928	{	1290	nready = 0;
929	prv = ress;	1291	npending = 0;
930	ress = prv->next;
931	req_free (prv);
932	}
933
934	ress = rese = 0;
935		1292
936	close (respipe [0]);	1293	close (respipe [0]);
937	close (respipe [1]);	1294	close (respipe [1]);
938	create_pipe ();	1295	create_pipe ();
939		1296
…		…
966	PROTOTYPES: ENABLE	1323	PROTOTYPES: ENABLE
967		1324
968	BOOT:	1325	BOOT:
969	{	1326	{
970	HV *stash = gv_stashpv ("IO::AIO", 1);	1327	HV *stash = gv_stashpv ("IO::AIO", 1);
		1328
971	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1329	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
972	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1330	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
973	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1331	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1332	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1333	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1334	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1335	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
974		1336
975	create_pipe ();	1337	create_pipe ();
976	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1338	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
977	}	1339	}
978		1340
979	void	1341	void
980	min_parallel (nthreads)	1342	max_poll_reqs (int nreqs)
981	int nthreads
982	PROTOTYPE: $	1343	PROTOTYPE: $
		1344	CODE:
		1345	max_poll_reqs = nreqs;
983		1346
984	void	1347	void
985	max_parallel (nthreads)	1348	max_poll_time (double nseconds)
986	int nthreads
987	PROTOTYPE: $	1349	PROTOTYPE: $
		1350	CODE:
		1351	max_poll_time = nseconds * AIO_TICKS;
		1352
		1353	void
		1354	min_parallel (int nthreads)
		1355	PROTOTYPE: $
		1356
		1357	void
		1358	max_parallel (int nthreads)
		1359	PROTOTYPE: $
		1360
		1361	void
		1362	max_idle (int nthreads)
		1363	PROTOTYPE: $
		1364	CODE:
		1365	set_max_idle (nthreads);
988		1366
989	int	1367	int
990	max_outstanding (nreqs)	1368	max_outstanding (int maxreqs)
991	int nreqs	1369	PROTOTYPE: $
992	PROTOTYPE: $
993	CODE:	1370	CODE:
994	RETVAL = max_outstanding;	1371	RETVAL = max_outstanding;
995	max_outstanding = nreqs;	1372	max_outstanding = maxreqs;
		1373	OUTPUT:
		1374	RETVAL
996		1375
997	void	1376	void
998	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1377	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
999	SV * pathname	1378	SV8 * pathname
1000	int flags	1379	int flags
1001	int mode	1380	int mode
1002	SV * callback	1381	SV * callback
1003	PROTOTYPE: $$$;$	1382	PROTOTYPE: $$$;$
1004	PPCODE:	1383	PPCODE:
1005	{	1384	{
1006	dREQ;	1385	dREQ;
1007		1386
1008	req->type = REQ_OPEN;	1387	req->type = REQ_OPEN;
1009	req->data = newSVsv (pathname);	1388	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011	req->fd = flags;	1390	req->int1 = flags;
1012	req->mode = mode;	1391	req->mode = mode;
1013		1392
1014	REQ_SEND;	1393	REQ_SEND;
1015	}	1394	}
1016		1395
…		…
1026	PPCODE:	1405	PPCODE:
1027	{	1406	{
1028	dREQ;	1407	dREQ;
1029		1408
1030	req->type = ix;	1409	req->type = ix;
1031	req->fh = newSVsv (fh);	1410	req->fh = newSVsv (fh);
1032	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1411	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1033		1412
1034	REQ_SEND (req);	1413	REQ_SEND (req);
1035	}	1414	}
1036		1415
1037	void	1416	void
1038	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1417	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1039	SV * fh	1418	SV * fh
1040	UV offset	1419	UV offset
1041	UV length	1420	UV length
1042	SV * data	1421	SV8 * data
1043	UV dataoffset	1422	UV dataoffset
1044	SV * callback	1423	SV * callback
1045	ALIAS:	1424	ALIAS:
1046	aio_read = REQ_READ	1425	aio_read = REQ_READ
1047	aio_write = REQ_WRITE	1426	aio_write = REQ_WRITE
1048	PROTOTYPE: $$$$$;$	1427	PROTOTYPE: $$$$$;$
1049	PPCODE:	1428	PPCODE:
1050	{	1429	{
1051	aio_req req;
1052	STRLEN svlen;	1430	STRLEN svlen;
1053	char *svptr = SvPVbyte (data, svlen);	1431	char *svptr = SvPVbyte (data, svlen);
1054		1432
1055	SvUPGRADE (data, SVt_PV);	1433	SvUPGRADE (data, SVt_PV);
1056	SvPOK_on (data);	1434	SvPOK_on (data);
…		…
1078		1456
1079	{	1457	{
1080	dREQ;	1458	dREQ;
1081		1459
1082	req->type = ix;	1460	req->type = ix;
1083	req->fh = newSVsv (fh);	1461	req->fh = newSVsv (fh);
1084	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1462	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1085	: IoOFP (sv_2io (fh)));	1463	: IoOFP (sv_2io (fh)));
1086	req->offset = offset;	1464	req->offs = offset;
1087	req->length = length;	1465	req->size = length;
1088	req->data = SvREFCNT_inc (data);	1466	req->sv1 = SvREFCNT_inc (data);
1089	req->dataptr = (char *)svptr + dataoffset;	1467	req->ptr1 = (char *)svptr + dataoffset;
		1468	req->stroffset = dataoffset;
1090		1469
1091	if (!SvREADONLY (data))	1470	if (!SvREADONLY (data))
1092	{	1471	{
1093	SvREADONLY_on (data);	1472	SvREADONLY_on (data);
1094	req->data2ptr = (void *)data;	1473	req->flags |= FLAG_SV1_RO_OFF;
1095	}	1474	}
1096		1475
1097	REQ_SEND;	1476	REQ_SEND;
1098	}	1477	}
		1478	}
		1479
		1480	void
		1481	aio_readlink (path,callback=&PL_sv_undef)
		1482	SV8 * path
		1483	SV * callback
		1484	PROTOTYPE: $$;$
		1485	PPCODE:
		1486	{
		1487	SV *data;
		1488	dREQ;
		1489
		1490	data = newSV (NAME_MAX);
		1491	SvPOK_on (data);
		1492
		1493	req->type = REQ_READLINK;
		1494	req->fh = newSVsv (path);
		1495	req->ptr2 = SvPVbyte_nolen (req->fh);
		1496	req->sv1 = data;
		1497	req->ptr1 = SvPVbyte_nolen (data);
		1498
		1499	REQ_SEND;
1099	}	1500	}
1100		1501
1101	void	1502	void
1102	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1503	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
1103	SV * out_fh	1504	SV * out_fh
…		…
1109	PPCODE:	1510	PPCODE:
1110	{	1511	{
1111	dREQ;	1512	dREQ;
1112		1513
1113	req->type = REQ_SENDFILE;	1514	req->type = REQ_SENDFILE;
1114	req->fh = newSVsv (out_fh);	1515	req->fh = newSVsv (out_fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1116	req->fh2 = newSVsv (in_fh);	1517	req->sv2 = newSVsv (in_fh);
1117	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1518	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1118	req->offset = in_offset;	1519	req->offs = in_offset;
1119	req->length = length;	1520	req->size = length;
1120		1521
1121	REQ_SEND;	1522	REQ_SEND;
1122	}	1523	}
1123		1524
1124	void	1525	void
…		…
1131	PPCODE:	1532	PPCODE:
1132	{	1533	{
1133	dREQ;	1534	dREQ;
1134		1535
1135	req->type = REQ_READAHEAD;	1536	req->type = REQ_READAHEAD;
1136	req->fh = newSVsv (fh);	1537	req->fh = newSVsv (fh);
1137	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1538	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1138	req->offset = offset;	1539	req->offs = offset;
1139	req->length = length;	1540	req->size = length;
1140		1541
1141	REQ_SEND;	1542	REQ_SEND;
1142	}	1543	}
1143		1544
1144	void	1545	void
1145	aio_stat (fh_or_path,callback=&PL_sv_undef)	1546	aio_stat (fh_or_path,callback=&PL_sv_undef)
1146	SV * fh_or_path	1547	SV8 * fh_or_path
1147	SV * callback	1548	SV * callback
1148	ALIAS:	1549	ALIAS:
1149	aio_stat = REQ_STAT	1550	aio_stat = REQ_STAT
1150	aio_lstat = REQ_LSTAT	1551	aio_lstat = REQ_LSTAT
1151	PPCODE:	1552	PPCODE:
1152	{	1553	{
1153	dREQ;	1554	dREQ;
1154		1555
1155	New (0, req->statdata, 1, Stat_t);	1556	req->ptr2 = malloc (sizeof (Stat_t));
1156	if (!req->statdata)	1557	if (!req->ptr2)
1157	{	1558	{
1158	req_free (req);	1559	req_free (req);
1159	croak ("out of memory during aio_req->statdata allocation");	1560	croak ("out of memory during aio_stat statdata allocation");
1160	}	1561	}
		1562
		1563	req->flags |= FLAG_PTR2_FREE;
1161		1564
1162	if (SvPOK (fh_or_path))	1565	if (SvPOK (fh_or_path))
1163	{	1566	{
1164	req->type = ix;	1567	req->type = ix;
1165	req->data = newSVsv (fh_or_path);	1568	req->sv1 = newSVsv (fh_or_path);
1166	req->dataptr = SvPVbyte_nolen (req->data);	1569	req->ptr1 = SvPVbyte_nolen (req->sv1);
1167	}	1570	}
1168	else	1571	else
1169	{	1572	{
1170	req->type = REQ_FSTAT;	1573	req->type = REQ_FSTAT;
1171	req->fh = newSVsv (fh_or_path);	1574	req->fh = newSVsv (fh_or_path);
1172	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1173	}	1576	}
1174		1577
1175	REQ_SEND;	1578	REQ_SEND;
1176	}	1579	}
1177		1580
1178	void	1581	void
1179	aio_unlink (pathname,callback=&PL_sv_undef)	1582	aio_unlink (pathname,callback=&PL_sv_undef)
1180	SV * pathname	1583	SV8 * pathname
1181	SV * callback	1584	SV * callback
1182	ALIAS:	1585	ALIAS:
1183	aio_unlink = REQ_UNLINK	1586	aio_unlink = REQ_UNLINK
1184	aio_rmdir = REQ_RMDIR	1587	aio_rmdir = REQ_RMDIR
1185	aio_readdir = REQ_READDIR	1588	aio_readdir = REQ_READDIR
1186	PPCODE:	1589	PPCODE:
1187	{	1590	{
1188	dREQ;	1591	dREQ;
1189		1592
1190	req->type = ix;	1593	req->type = ix;
1191	req->data = newSVsv (pathname);	1594	req->sv1 = newSVsv (pathname);
1192	req->dataptr = SvPVbyte_nolen (req->data);	1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1193		1596
1194	REQ_SEND;	1597	REQ_SEND;
1195	}	1598	}
1196		1599
1197	void	1600	void
1198	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1601	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1199	SV * oldpath	1602	SV8 * oldpath
1200	SV * newpath	1603	SV8 * newpath
1201	SV * callback	1604	SV * callback
1202	ALIAS:	1605	ALIAS:
1203	aio_link = REQ_LINK	1606	aio_link = REQ_LINK
1204	aio_symlink = REQ_SYMLINK	1607	aio_symlink = REQ_SYMLINK
1205	aio_rename = REQ_RENAME	1608	aio_rename = REQ_RENAME
1206	PPCODE:	1609	PPCODE:
1207	{	1610	{
1208	dREQ;	1611	dREQ;
1209		1612
1210	req->type = ix;	1613	req->type = ix;
1211	req->fh = newSVsv (oldpath);	1614	req->fh = newSVsv (oldpath);
1212	req->data2ptr = SvPVbyte_nolen (req->fh);	1615	req->ptr2 = SvPVbyte_nolen (req->fh);
1213	req->data = newSVsv (newpath);	1616	req->sv1 = newSVsv (newpath);
1214	req->dataptr = SvPVbyte_nolen (req->data);	1617	req->ptr1 = SvPVbyte_nolen (req->sv1);
1215		1618
1216	REQ_SEND;	1619	REQ_SEND;
1217	}	1620	}
1218		1621
1219	void	1622	void
1220	aio_sleep (delay,callback=&PL_sv_undef)	1623	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1221	double delay	1624	SV8 * pathname
1222	SV * callback	1625	SV * callback
		1626	UV mode
		1627	UV dev
1223	PPCODE:	1628	PPCODE:
1224	{	1629	{
1225	dREQ;	1630	dREQ;
		1631
		1632	req->type = REQ_MKNOD;
		1633	req->sv1 = newSVsv (pathname);
		1634	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1635	req->mode = (mode_t)mode;
		1636	req->offs = dev;
		1637
		1638	REQ_SEND;
		1639	}
1226		1640
		1641	void
		1642	aio_busy (delay,callback=&PL_sv_undef)
		1643	double delay
		1644	SV * callback
		1645	PPCODE:
		1646	{
		1647	dREQ;
		1648
1227	req->type = REQ_SLEEP;	1649	req->type = REQ_BUSY;
1228	req->fd = delay < 0. ? 0 : delay;	1650	req->int1 = delay < 0. ? 0 : delay;
1229	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1651	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1230		1652
1231	REQ_SEND;	1653	REQ_SEND;
1232	}	1654	}
1233		1655
1234	void	1656	void
…		…
1238	PPCODE:	1660	PPCODE:
1239	{	1661	{
1240	dREQ;	1662	dREQ;
1241		1663
1242	req->type = REQ_GROUP;	1664	req->type = REQ_GROUP;
		1665
1243	req_send (req);	1666	req_send (req);
1244
1245	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1667	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1246	}	1668	}
1247		1669
1248	void	1670	void
1249	aio_nop (callback=&PL_sv_undef)	1671	aio_nop (callback=&PL_sv_undef)
1250	SV * callback	1672	SV * callback
1251	PPCODE:	1673	PPCODE:
1252	{	1674	{
1253	dREQ;	1675	dREQ;
1254		1676
1255	req->type = REQ_NOP;	1677	req->type = REQ_NOP;
1256		1678
1257	REQ_SEND;	1679	REQ_SEND;
1258	}	1680	}
1259		1681
1260	#if 0	1682	int
1261		1683	aioreq_pri (int pri = 0)
1262	void	1684	PROTOTYPE: ;$
1263	aio_pri (int pri = DEFAULT_PRI)
1264	CODE:	1685	CODE:
		1686	RETVAL = next_pri - PRI_BIAS;
		1687	if (items > 0)
		1688	{
1265	if (pri > PRI_MIN) pri = PRI_MIN;	1689	if (pri < PRI_MIN) pri = PRI_MIN;
1266	if (pri < PRI_MAX) pri = PRI_MAX;	1690	if (pri > PRI_MAX) pri = PRI_MAX;
1267	next_pri = pri + PRI_BIAS;	1691	next_pri = pri + PRI_BIAS;
		1692	}
		1693	OUTPUT:
		1694	RETVAL
1268		1695
1269	#endif	1696	void
		1697	aioreq_nice (int nice = 0)
		1698	CODE:
		1699	nice = next_pri - nice;
		1700	if (nice < PRI_MIN) nice = PRI_MIN;
		1701	if (nice > PRI_MAX) nice = PRI_MAX;
		1702	next_pri = nice + PRI_BIAS;
1270		1703
1271	void	1704	void
1272	flush ()	1705	flush ()
1273	PROTOTYPE:	1706	PROTOTYPE:
1274	CODE:	1707	CODE:
…		…
1276	{	1709	{
1277	poll_wait ();	1710	poll_wait ();
1278	poll_cb ();	1711	poll_cb ();
1279	}	1712	}
1280		1713
1281	void	1714	int
1282	poll()	1715	poll()
1283	PROTOTYPE:	1716	PROTOTYPE:
1284	CODE:	1717	CODE:
1285	if (nreqs)
1286	{
1287	poll_wait ();	1718	poll_wait ();
1288	poll_cb ();	1719	RETVAL = poll_cb ();
1289	}	1720	OUTPUT:
		1721	RETVAL
1290		1722
1291	int	1723	int
1292	poll_fileno()	1724	poll_fileno()
1293	PROTOTYPE:	1725	PROTOTYPE:
1294	CODE:	1726	CODE:
…		…
1306		1738
1307	void	1739	void
1308	poll_wait()	1740	poll_wait()
1309	PROTOTYPE:	1741	PROTOTYPE:
1310	CODE:	1742	CODE:
1311	if (nreqs)
1312	poll_wait ();	1743	poll_wait ();
		1744
		1745	void
		1746	setsig (int signum = SIGIO)
		1747	PROTOTYPE: ;$
		1748	CODE:
		1749	{
		1750	if (block_sig_level)
		1751	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1752
		1753	LOCK (reslock);
		1754	main_tid = pthread_self ();
		1755	main_sig = signum;
		1756	UNLOCK (reslock);
		1757
		1758	if (main_sig && npending)
		1759	pthread_kill (main_tid, main_sig);
		1760	}
		1761
		1762	void
		1763	aio_block (SV *cb)
		1764	PROTOTYPE: &
		1765	PPCODE:
		1766	{
		1767	int count;
		1768
		1769	block_sig ();
		1770	PUSHMARK (SP);
		1771	PUTBACK;
		1772	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1773	SPAGAIN;
		1774	unblock_sig ();
		1775
		1776	if (SvTRUE (ERRSV))
		1777	croak (0);
		1778
		1779	XSRETURN (count);
		1780	}
1313		1781
1314	int	1782	int
1315	nreqs()	1783	nreqs()
1316	PROTOTYPE:	1784	PROTOTYPE:
1317	CODE:	1785	CODE:
1318	RETVAL = nreqs;	1786	RETVAL = nreqs;
1319	OUTPUT:	1787	OUTPUT:
1320	RETVAL	1788	RETVAL
1321		1789
		1790	int
		1791	nready()
		1792	PROTOTYPE:
		1793	CODE:
		1794	RETVAL = get_nready ();
		1795	OUTPUT:
		1796	RETVAL
		1797
		1798	int
		1799	npending()
		1800	PROTOTYPE:
		1801	CODE:
		1802	RETVAL = get_npending ();
		1803	OUTPUT:
		1804	RETVAL
		1805
		1806	int
		1807	nthreads()
		1808	PROTOTYPE:
		1809	CODE:
		1810	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1811	RETVAL = started;
		1812	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1813	OUTPUT:
		1814	RETVAL
		1815
1322	PROTOTYPES: DISABLE	1816	PROTOTYPES: DISABLE
1323		1817
1324	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1818	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325		1819
1326	void	1820	void
1327	cancel (aio_req_ornot req)	1821	cancel (aio_req_ornot req)
1328	PROTOTYPE:
1329	CODE:	1822	CODE:
1330	req_cancel (req);	1823	req_cancel (req);
1331		1824
1332	void	1825	void
1333	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1826	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1342	PPCODE:	1835	PPCODE:
1343	{	1836	{
1344	int i;	1837	int i;
1345	aio_req req;	1838	aio_req req;
1346		1839
		1840	if (main_sig && !block_sig_level)
		1841	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1842
1347	if (grp->fd == 2)	1843	if (grp->int1 == 2)
1348	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1844	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1349		1845
1350	for (i = 1; i < items; ++i )	1846	for (i = 1; i < items; ++i )
1351	{	1847	{
1352	if (GIMME_V != G_VOID)	1848	if (GIMME_V != G_VOID)
…		…
1354		1850
1355	req = SvAIO_REQ (ST (i));	1851	req = SvAIO_REQ (ST (i));
1356		1852
1357	if (req)	1853	if (req)
1358	{	1854	{
1359	++grp->length;	1855	++grp->size;
1360	req->grp = grp;	1856	req->grp = grp;
1361		1857
1362	req->grp_prev = 0;	1858	req->grp_prev = 0;
1363	req->grp_next = grp->grp_first;	1859	req->grp_next = grp->grp_first;
1364		1860
…		…
1369	}	1865	}
1370	}	1866	}
1371	}	1867	}
1372		1868
1373	void	1869	void
		1870	cancel_subs (aio_req_ornot req)
		1871	CODE:
		1872	req_cancel_subs (req);
		1873
		1874	void
1374	result (aio_req grp, ...)	1875	result (aio_req grp, ...)
1375	CODE:	1876	CODE:
1376	{	1877	{
1377	int i;	1878	int i;
		1879	AV *av;
		1880
		1881	grp->errorno = errno;
		1882
1378	AV *av = newAV ();	1883	av = newAV ();
1379		1884
1380	for (i = 1; i < items; ++i )	1885	for (i = 1; i < items; ++i )
1381	av_push (av, newSVsv (ST (i)));	1886	av_push (av, newSVsv (ST (i)));
1382		1887
1383	SvREFCNT_dec (grp->data);	1888	SvREFCNT_dec (grp->sv1);
1384	grp->data = (SV *)av;	1889	grp->sv1 = (SV *)av;
1385	}	1890	}
1386		1891
1387	void	1892	void
		1893	errno (aio_req grp, int errorno = errno)
		1894	CODE:
		1895	grp->errorno = errorno;
		1896
		1897	void
1388	feed_limit (aio_req grp, int limit)	1898	limit (aio_req grp, int limit)
1389	CODE:	1899	CODE:
1390	grp->fd2 = limit;	1900	grp->int2 = limit;
1391	aio_grp_feed (grp);	1901	aio_grp_feed (grp);
1392		1902
1393	void	1903	void
1394	feed (aio_req grp, SV *callback=&PL_sv_undef)	1904	feed (aio_req grp, SV *callback=&PL_sv_undef)
1395	CODE:	1905	CODE:
1396	{	1906	{
1397	SvREFCNT_dec (grp->fh2);	1907	SvREFCNT_dec (grp->sv2);
1398	grp->fh2 = newSVsv (callback);	1908	grp->sv2 = newSVsv (callback);
1399		1909
1400	if (grp->fd2 <= 0)	1910	if (grp->int2 <= 0)
1401	grp->fd2 = 2;	1911	grp->int2 = 2;
1402		1912
1403	aio_grp_feed (grp);	1913	aio_grp_feed (grp);
1404	}	1914	}
1405		1915

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