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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.53 by root, Mon Oct 23 00:17:07 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 ();
106	static void req_invoke (aio_req req);	360	static int req_invoke (aio_req req);
107	static void req_free (aio_req req);	361	static void req_free (aio_req req);
		362	static void req_cancel (aio_req req);
108		363
109	/* must be called at most once */	364	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	365	static SV *req_sv (aio_req req, const char *klass)
111	{	366	{
112	if (!req->self)	367	if (!req->self)
…		…
130	return mg ? (aio_req)mg->mg_ptr : 0;	385	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	386	}
132		387
133	static void aio_grp_feed (aio_req grp)	388	static void aio_grp_feed (aio_req grp)
134	{	389	{
135	while (grp->length < grp->fd2)	390	block_sig ();
		391
		392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
136	{	393	{
137	int old_len = grp->length;	394	int old_len = grp->size;
138		395
139	if (grp->fh2 && SvOK (grp->fh2))	396	if (grp->sv2 && SvOK (grp->sv2))
140	{	397	{
141	dSP;	398	dSP;
142		399
143	ENTER;	400	ENTER;
144	SAVETMPS;	401	SAVETMPS;
145	PUSHMARK (SP);	402	PUSHMARK (SP);
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
147	PUTBACK;	404	PUTBACK;
148	call_sv (grp->fh2, G_VOID | G_EVAL);	405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
149	SPAGAIN;	406	SPAGAIN;
150	FREETMPS;	407	FREETMPS;
151	LEAVE;	408	LEAVE;
152	}	409	}
153		410
154	/* stop if no progress has been made */	411	/* stop if no progress has been made */
155	if (old_len == grp->length)	412	if (old_len == grp->size)
156	{	413	{
157	SvREFCNT_dec (grp->fh2);	414	SvREFCNT_dec (grp->sv2);
158	grp->fh2 = 0;	415	grp->sv2 = 0;
159	break;	416	break;
160	}	417	}
161	}	418	}
		419
		420	unblock_sig ();
162	}	421	}
163		422
164	static void aio_grp_dec (aio_req grp)	423	static void aio_grp_dec (aio_req grp)
165	{	424	{
166	--grp->length;	425	--grp->size;
167		426
168	/* call feeder, if applicable */	427	/* call feeder, if applicable */
169	aio_grp_feed (grp);	428	aio_grp_feed (grp);
170		429
171	/* finish, if done */	430	/* finish, if done */
172	if (!grp->length && grp->fd)	431	if (!grp->size && grp->int1)
173	{	432	{
		433	block_sig ();
		434
174	req_invoke (grp);	435	if (!req_invoke (grp))
		436	{
		437	req_free (grp);
		438	unblock_sig ();
		439	croak (0);
		440	}
		441
175	req_free (grp);	442	req_free (grp);
		443	unblock_sig ();
176	}	444	}
177	}	445	}
178		446
179	static void poll_wait ()	447	static int req_invoke (aio_req req)
180	{	448	{
181	if (nreqs && !ress)	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))
182	{	455	{
183	fd_set rfd;	456	ENTER;
184	FD_ZERO(&rfd);	457	SAVETMPS;
185	FD_SET(respipe [0], &rfd);	458	PUSHMARK (SP);
		459	EXTEND (SP, 1);
186		460
187	select (respipe [0] + 1, &rfd, 0, 0, 0);	461	switch (req->type)
		462	{
		463	case REQ_READDIR:
		464	{
		465	SV *rv = &PL_sv_undef;
		466
		467	if (req->result >= 0)
		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	{
		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;
188	}	561	}
189	}
190		562
191	static void req_invoke (aio_req req)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{
208	case REQ_READDIR:
209	{
210	SV *rv = &PL_sv_undef;
211
212	if (req->result >= 0)
213	{
214	char *buf = req->data2ptr;
215	AV *av = newAV ();
216
217	while (req->result)
218	{
219	SV *sv = newSVpv (buf, 0);
220
221	av_push (av, sv);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_SLEEP:
265	break;
266
267	default:
268	PUSHs (sv_2mortal (newSViv (req->result)));
269	break;
270	}
271
272
273	PUTBACK;
274	call_sv (req->callback, G_VOID | G_EVAL);
275	SPAGAIN;
276
277	FREETMPS;
278	LEAVE;
279
280	errno = errorno;
281
282	if (SvTRUE (ERRSV))
283	{
284	req_free (req);
285	croak (0);
286	}
287	}
288
289	static void req_free (aio_req req)
290	{
291	if (req->grp)	563	if (req->grp)
292	{	564	{
293	aio_req grp = req->grp;	565	aio_req grp = req->grp;
294		566
295	/* unlink request */	567	/* unlink request */
…		…
300	grp->grp_first = req->grp_next;	572	grp->grp_first = req->grp_next;
301		573
302	aio_grp_dec (grp);	574	aio_grp_dec (grp);
303	}	575	}
304		576
		577	return !SvTRUE (ERRSV);
		578	}
		579
		580	static void req_free (aio_req req)
		581	{
305	if (req->self)	582	if (req->self)
306	{	583	{
307	sv_unmagic (req->self, PERL_MAGIC_ext);	584	sv_unmagic (req->self, PERL_MAGIC_ext);
308	SvREFCNT_dec (req->self);	585	SvREFCNT_dec (req->self);
309	}	586	}
310		587
311	SvREFCNT_dec (req->data);
312	SvREFCNT_dec (req->fh);	588	SvREFCNT_dec (req->fh);
		589	SvREFCNT_dec (req->sv1);
313	SvREFCNT_dec (req->fh2);	590	SvREFCNT_dec (req->sv2);
314	SvREFCNT_dec (req->callback);	591	SvREFCNT_dec (req->callback);
315	Safefree (req->statdata);
316		592
317	if (req->type == REQ_READDIR && req->result >= 0)	593	if (req->flags & FLAG_PTR2_FREE)
318	free (req->data2ptr);	594	free (req->ptr2);
319		595
320	Safefree (req);	596	Safefree (req);
321	}	597	}
322		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
323	static void req_cancel (aio_req req)	613	static void req_cancel (aio_req req)
324	{	614	{
325	req->cancelled = 1;	615	req->flags |= FLAG_CANCELLED;
326		616
327	if (req->type == REQ_GROUP)	617	req_cancel_subs (req);
328	{
329	aio_req sub;
330
331	for (sub = req->grp_first; sub; sub = sub->grp_next)
332	req_cancel (sub);
333	}
334	}
335
336	static int poll_cb ()
337	{
338	dSP;
339	int count = 0;
340	int do_croak = 0;
341	aio_req req;
342
343	for (;;)
344	{
345	pthread_mutex_lock (&reslock);
346	req = ress;
347
348	if (req)
349	{
350	ress = req->next;
351
352	if (!ress)
353	{
354	/* read any signals sent by the worker threads */
355	char buf [32];
356	while (read (respipe [0], buf, 32) == 32)
357	;
358
359	rese = 0;
360	}
361	}
362
363	pthread_mutex_unlock (&reslock);
364
365	if (!req)
366	break;
367
368	--nreqs;
369
370	if (req->type == REQ_QUIT)
371	started--;
372	else if (req->type == REQ_GROUP && req->length)
373	{
374	req->fd = 1; /* mark request as delayed */
375	continue;
376	}
377	else
378	{
379	if (req->type == REQ_READ)
380	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
381
382	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
383	SvREADONLY_off (req->data);
384
385	if (req->statdata)
386	{
387	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
388	PL_laststatval = req->result;
389	PL_statcache = *(req->statdata);
390	}
391
392	req_invoke (req);
393
394	count++;
395	}
396
397	req_free (req);
398	}
399
400	return count;
401	}	618	}
402		619
403	static void *aio_proc(void *arg);	620	static void *aio_proc(void *arg);
404		621
405	static void start_thread (void)	622	static void start_thread (void)
406	{	623	{
407	sigset_t fullsigset, oldsigset;	624	sigset_t fullsigset, oldsigset;
408	pthread_t tid;
409	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");
410		631
411	pthread_attr_init (&attr);	632	pthread_attr_init (&attr);
412	pthread_attr_setstacksize (&attr, STACKSIZE);	633	pthread_attr_setstacksize (&attr, STACKSIZE);
413	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
414		638
415	sigfillset (&fullsigset);	639	sigfillset (&fullsigset);
		640
		641	LOCK (wrklock);
416	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
417		643
418	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
419	started++;
420
421	sigprocmask (SIG_SETMASK, &oldsigset, 0);
422	}
423
424	static void req_send (aio_req req)
425	{
426	while (started < wanted && nreqs >= started)
427	start_thread ();
428
429	++nreqs;
430
431	pthread_mutex_lock (&reqlock);
432
433	req->next = 0;
434
435	if (reqe)
436	{	645	{
437	reqe->next = req;	646	wrk->prev = &wrk_first;
438	reqe = req;	647	wrk->next = wrk_first.next;
		648	wrk_first.next->prev = wrk;
		649	wrk_first.next = wrk;
		650	++started;
439	}	651	}
440	else	652	else
441	reqe = reqs = req;	653	free (wrk);
442		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);
443	pthread_cond_signal (&reqwait);	680	pthread_cond_signal (&reqwait);
444	pthread_mutex_unlock (&reqlock);	681	UNLOCK (reqlock);
445		682
446	if (nreqs > max_outstanding)	683	unblock_sig ();
447	for (;;)
448	{
449	poll_cb ();
450		684
451	if (nreqs <= max_outstanding)	685	maybe_start_thread ();
452	break;
453
454	poll_wait ();
455	}
456	}	686	}
457		687
458	static void end_thread (void)	688	static void end_thread (void)
459	{	689	{
460	aio_req req;	690	aio_req req;
		691
461	Newz (0, req, 1, aio_cb);	692	Newz (0, req, 1, aio_cb);
		693
462	req->type = REQ_QUIT;	694	req->type = REQ_QUIT;
		695	req->pri = PRI_MAX + PRI_BIAS;
463		696
464	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);
465	}	712	}
466		713
467	static void min_parallel (int nthreads)	714	static void min_parallel (int nthreads)
468	{	715	{
469	if (wanted < nthreads)	716	if (wanted < nthreads)
470	wanted = nthreads;	717	wanted = nthreads;
471	}	718	}
472		719
473	static void max_parallel (int nthreads)	720	static void max_parallel (int nthreads)
474	{	721	{
475	int cur = started;
476
477	if (wanted > nthreads)	722	if (wanted > nthreads)
478	wanted = nthreads;	723	wanted = nthreads;
479		724
480	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)
481	{	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
482	end_thread ();	743	maybe_start_thread ();
483	cur--;	744
		745	FD_ZERO(&rfd);
		746	FD_SET(respipe [0], &rfd);
		747
		748	select (respipe [0] + 1, &rfd, 0, 0, 0);
484	}	749	}
		750	}
485		751
486	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 (;;)
487	{	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
488	poll_wait ();	829	poll_wait ();
489	poll_cb ();	830
		831	++maxreqs;
490	}	832	}
		833
		834	unblock_sig ();
		835	return count;
491	}	836	}
492		837
493	static void create_pipe ()	838	static void create_pipe ()
494	{	839	{
495	if (pipe (respipe))	840	if (pipe (respipe))
…		…
519	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)
520	{	865	{
521	ssize_t res;	866	ssize_t res;
522	off_t ooffset;	867	off_t ooffset;
523		868
524	pthread_mutex_lock (&preadwritelock);	869	LOCK (preadwritelock);
525	ooffset = lseek (fd, 0, SEEK_CUR);	870	ooffset = lseek (fd, 0, SEEK_CUR);
526	lseek (fd, offset, SEEK_SET);	871	lseek (fd, offset, SEEK_SET);
527	res = read (fd, buf, count);	872	res = read (fd, buf, count);
528	lseek (fd, ooffset, SEEK_SET);	873	lseek (fd, ooffset, SEEK_SET);
529	pthread_mutex_unlock (&preadwritelock);	874	UNLOCK (preadwritelock);
530		875
531	return res;	876	return res;
532	}	877	}
533		878
534	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)
535	{	880	{
536	ssize_t res;	881	ssize_t res;
537	off_t ooffset;	882	off_t ooffset;
538		883
539	pthread_mutex_lock (&preadwritelock);	884	LOCK (preadwritelock);
540	ooffset = lseek (fd, 0, SEEK_CUR);	885	ooffset = lseek (fd, 0, SEEK_CUR);
541	lseek (fd, offset, SEEK_SET);	886	lseek (fd, offset, SEEK_SET);
542	res = write (fd, buf, count);	887	res = write (fd, buf, count);
543	lseek (fd, offset, SEEK_SET);	888	lseek (fd, offset, SEEK_SET);
544	pthread_mutex_unlock (&preadwritelock);	889	UNLOCK (preadwritelock);
545		890
546	return res;	891	return res;
547	}	892	}
548	#endif	893	#endif
549		894
550	#if !HAVE_FDATASYNC	895	#if !HAVE_FDATASYNC
551	# define fdatasync fsync	896	# define fdatasync fsync
552	#endif	897	#endif
553		898
554	#if !HAVE_READAHEAD	899	#if !HAVE_READAHEAD
555	# define readahead aio_readahead	900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
556		901
557	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)
558	{	903	{
559	char readahead_buf[4096];	904	dBUF;
560		905
561	while (count > 0)	906	while (count > 0)
562	{	907	{
563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
564		909
565	pread (fd, readahead_buf, len, offset);	910	pread (fd, aio_buf, len, offset);
566	offset += len;	911	offset += len;
567	count -= len;	912	count -= len;
568	}	913	}
569		914
570	errno = 0;	915	errno = 0;
571	}	916	}
		917
572	#endif	918	#endif
573		919
574	#if !HAVE_READDIR_R	920	#if !HAVE_READDIR_R
575	# define readdir_r aio_readdir_r	921	# define readdir_r aio_readdir_r
576		922
…		…
579	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)
580	{	926	{
581	struct dirent *e;	927	struct dirent *e;
582	int errorno;	928	int errorno;
583		929
584	pthread_mutex_lock (&readdirlock);	930	LOCK (readdirlock);
585		931
586	e = readdir (dirp);	932	e = readdir (dirp);
587	errorno = errno;	933	errorno = errno;
588		934
589	if (e)	935	if (e)
…		…
592	strcpy (ent->d_name, e->d_name);	938	strcpy (ent->d_name, e->d_name);
593	}	939	}
594	else	940	else
595	*res = 0;	941	*res = 0;
596		942
597	pthread_mutex_unlock (&readdirlock);	943	UNLOCK (readdirlock);
598		944
599	errno = errorno;	945	errno = errorno;
600	return e ? 0 : -1;	946	return e ? 0 : -1;
601	}	947	}
602	#endif	948	#endif
603		949
604	/* sendfile always needs emulation */	950	/* sendfile always needs emulation */
605	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)
606	{	952	{
607	ssize_t res;	953	ssize_t res;
608		954
609	if (!count)	955	if (!count)
610	return 0;	956	return 0;
…		…
621	{	967	{
622	off_t sbytes;	968	off_t sbytes;
623	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
624		970
625	if (res < 0 && sbytes)	971	if (res < 0 && sbytes)
626	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
627	res = sbytes;	973	res = sbytes;
628	}	974	}
629		975
630	# elif __hpux	976	# elif __hpux
631	res = sendfile (ofd, ifd, offset, count, 0, 0);	977	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
659	#endif	1005	#endif
660	)	1006	)
661	)	1007	)
662	{	1008	{
663	/* emulate sendfile. this is a major pain in the ass */	1009	/* emulate sendfile. this is a major pain in the ass */
664	char buf[4096];	1010	dBUF;
		1011
665	res = 0;	1012	res = 0;
666		1013
667	while (count)	1014	while (count)
668	{	1015	{
669	ssize_t cnt;	1016	ssize_t cnt;
670		1017
671	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
672		1019
673	if (cnt <= 0)	1020	if (cnt <= 0)
674	{	1021	{
675	if (cnt && !res) res = -1;	1022	if (cnt && !res) res = -1;
676	break;	1023	break;
677	}	1024	}
678		1025
679	cnt = write (ofd, buf, cnt);	1026	cnt = write (ofd, aio_buf, cnt);
680		1027
681	if (cnt <= 0)	1028	if (cnt <= 0)
682	{	1029	{
683	if (cnt && !res) res = -1;	1030	if (cnt && !res) res = -1;
684	break;	1031	break;
…		…
692		1039
693	return res;	1040	return res;
694	}	1041	}
695		1042
696	/* read a full directory */	1043	/* read a full directory */
697	static int scandir_ (const char *path, void **namesp)	1044	static void scandir_ (aio_req req, worker *self)
698	{	1045	{
699	DIR *dirp = opendir (path);	1046	DIR *dirp;
700	union	1047	union
701	{	1048	{
702	struct dirent d;	1049	struct dirent d;
703	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
704	} u;	1051	} *u;
705	struct dirent *entp;	1052	struct dirent *entp;
706	char *name, *names;	1053	char *name, *names;
707	int memlen = 4096;	1054	int memlen = 4096;
708	int memofs = 0;	1055	int memofs = 0;
709	int res = 0;	1056	int res = 0;
710	int errorno;	1057	int errorno;
711		1058
712	if (!dirp)	1059	LOCK (wrklock);
713	return -1;	1060	self->dirp = dirp = opendir (req->ptr1);
714		1061	self->dbuf = u = malloc (sizeof (*u));
		1062	req->flags |= FLAG_PTR2_FREE;
715	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);
716		1116
717	for (;;)	1117	for (;;)
718	{	1118	{
719	errno = 0, readdir_r (dirp, &u.d, &entp);	1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
720		1120
721	if (!entp)	1121	LOCK (reqlock);
722	break;
723
724	name = entp->d_name;
725
726	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
727	{
728	int len = strlen (name) + 1;
729
730	res++;
731
732	while (memofs + len > memlen)
733	{
734	memlen *= 2;
735	names = realloc (names, memlen);
736	if (!names)
737	break;
738	}
739
740	memcpy (names + memofs, name, len);
741	memofs += len;
742	}
743	}
744
745	errorno = errno;
746	closedir (dirp);
747
748	if (errorno)
749	{
750	free (names);
751	errno = errorno;
752	res = -1;
753	}
754
755	*namesp = (void *)names;
756	return res;
757	}
758
759	/*****************************************************************************/
760
761	static void *aio_proc (void *thr_arg)
762	{
763	aio_req req;
764	int type;
765
766	do
767	{
768	pthread_mutex_lock (&reqlock);
769		1122
770	for (;;)	1123	for (;;)
771	{	1124	{
772	req = reqs;	1125	self->req = req = reqq_shift (&req_queue);
773
774	if (reqs)
775	{
776	reqs = reqs->next;
777	if (!reqs) reqe = 0;
778	}
779		1126
780	if (req)	1127	if (req)
781	break;	1128	break;
782		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 */
783	pthread_cond_wait (&reqwait, &reqlock);	1146	pthread_cond_wait (&reqwait, &reqlock);
		1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1148	}
		1149
		1150	--idle;
784	}	1151	}
785		1152
786	pthread_mutex_unlock (&reqlock);	1153	--nready;
		1154
		1155	UNLOCK (reqlock);
787		1156
788	errno = 0; /* strictly unnecessary */	1157	errno = 0; /* strictly unnecessary */
789		1158
790	if (!req->cancelled)	1159	if (!(req->flags & FLAG_CANCELLED))
791	switch (type = req->type) /* remember type for QUIT check */	1160	switch (req->type)
792	{	1161	{
793	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;
794	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;
795		1164
796	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;
797	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;
798		1167
799	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;
800	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;
801	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;
802		1171
803	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;
804	case REQ_CLOSE: req->result = close (req->fd); break;	1173	case REQ_CLOSE: req->result = close (req->int1); break;
805	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
806	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;
807	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
808	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
809	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;
810		1182
811	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
812	case REQ_FSYNC: req->result = fsync (req->fd); break;	1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
813	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1185	case REQ_READDIR: scandir_ (req, self); break;
814		1186
815	case REQ_SLEEP:	1187	case REQ_BUSY:
816	{	1188	{
817	struct timeval tv;	1189	struct timeval tv;
818		1190
819	tv.tv_sec = req->fd;	1191	tv.tv_sec = req->int1;
820	tv.tv_usec = req->fd2;	1192	tv.tv_usec = req->int2;
821		1193
822	req->result = select (0, 0, 0, 0, &tv);	1194	req->result = select (0, 0, 0, 0, &tv);
823	}	1195	}
824		1196
		1197	case REQ_GROUP:
		1198	case REQ_NOP:
		1199	break;
		1200
825	case REQ_QUIT:	1201	case REQ_QUIT:
826	break;	1202	goto quit;
827		1203
828	default:	1204	default:
829	req->result = ENOSYS;	1205	req->result = ENOSYS;
830	break;	1206	break;
831	}	1207	}
832		1208
833	req->errorno = errno;	1209	req->errorno = errno;
834		1210
835	pthread_mutex_lock (&reslock);	1211	LOCK (reslock);
836		1212
837	req->next = 0;	1213	++npending;
838		1214
839	if (rese)	1215	if (!reqq_push (&res_queue, req))
840	{	1216	{
841	rese->next = req;
842	rese = req;
843	}
844	else
845	{
846	rese = ress = req;
847
848	/* write a dummy byte to the pipe so fh becomes ready */	1217	/* write a dummy byte to the pipe so fh becomes ready */
849	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);
850	}	1223	}
851		1224
852	pthread_mutex_unlock (&reslock);	1225	self->req = 0;
		1226	worker_clear (self);
		1227
		1228	UNLOCK (reslock);
853	}	1229	}
854	while (type != REQ_QUIT);	1230
		1231	quit:
		1232	LOCK (wrklock);
		1233	worker_free (self);
		1234	UNLOCK (wrklock);
855		1235
856	return 0;	1236	return 0;
857	}	1237	}
858		1238
859	/*****************************************************************************/	1239	/*****************************************************************************/
860		1240
861	static void atfork_prepare (void)	1241	static void atfork_prepare (void)
862	{	1242	{
863	pthread_mutex_lock (&reqlock);	1243	LOCK (wrklock);
864	pthread_mutex_lock (&reslock);	1244	LOCK (reqlock);
		1245	LOCK (reslock);
865	#if !HAVE_PREADWRITE	1246	#if !HAVE_PREADWRITE
866	pthread_mutex_lock (&preadwritelock);	1247	LOCK (preadwritelock);
867	#endif	1248	#endif
868	#if !HAVE_READDIR_R	1249	#if !HAVE_READDIR_R
869	pthread_mutex_lock (&readdirlock);	1250	LOCK (readdirlock);
870	#endif	1251	#endif
871	}	1252	}
872		1253
873	static void atfork_parent (void)	1254	static void atfork_parent (void)
874	{	1255	{
875	#if !HAVE_READDIR_R	1256	#if !HAVE_READDIR_R
876	pthread_mutex_unlock (&readdirlock);	1257	UNLOCK (readdirlock);
877	#endif	1258	#endif
878	#if !HAVE_PREADWRITE	1259	#if !HAVE_PREADWRITE
879	pthread_mutex_unlock (&preadwritelock);	1260	UNLOCK (preadwritelock);
880	#endif	1261	#endif
881	pthread_mutex_unlock (&reslock);	1262	UNLOCK (reslock);
882	pthread_mutex_unlock (&reqlock);	1263	UNLOCK (reqlock);
		1264	UNLOCK (wrklock);
883	}	1265	}
884		1266
885	static void atfork_child (void)	1267	static void atfork_child (void)
886	{	1268	{
887	aio_req prv;	1269	aio_req prv;
888		1270
889	started = 0;	1271	while (prv = reqq_shift (&req_queue))
		1272	req_free (prv);
890		1273
891	while (reqs)	1274	while (prv = reqq_shift (&res_queue))
		1275	req_free (prv);
		1276
		1277	while (wrk_first.next != &wrk_first)
892	{	1278	{
893	prv = reqs;	1279	worker *wrk = wrk_first.next;
894	reqs = prv->next;	1280
		1281	if (wrk->req)
		1282	req_free (wrk->req);
		1283
		1284	worker_clear (wrk);
895	req_free (prv);	1285	worker_free (wrk);
896	}	1286	}
897		1287
898	reqs = reqe = 0;	1288	started = 0;
899		1289	idle = 0;
900	while (ress)	1290	nreqs = 0;
901	{	1291	nready = 0;
902	prv = ress;	1292	npending = 0;
903	ress = prv->next;
904	req_free (prv);
905	}
906
907	ress = rese = 0;
908		1293
909	close (respipe [0]);	1294	close (respipe [0]);
910	close (respipe [1]);	1295	close (respipe [1]);
911	create_pipe ();	1296	create_pipe ();
912		1297
913	atfork_parent ();	1298	atfork_parent ();
914	}	1299	}
915		1300
916	#define dREQ \	1301	#define dREQ \
917	aio_req req; \	1302	aio_req req; \
		1303	int req_pri = next_pri; \
		1304	next_pri = DEFAULT_PRI + PRI_BIAS; \
918	\	1305	\
919	if (SvOK (callback) && !SvROK (callback)) \	1306	if (SvOK (callback) && !SvROK (callback)) \
920	croak ("callback must be undef or of reference type"); \	1307	croak ("callback must be undef or of reference type"); \
921	\	1308	\
922	Newz (0, req, 1, aio_cb); \	1309	Newz (0, req, 1, aio_cb); \
923	if (!req) \	1310	if (!req) \
924	croak ("out of memory during aio_req allocation"); \	1311	croak ("out of memory during aio_req allocation"); \
925	\	1312	\
926	req->callback = newSVsv (callback)	1313	req->callback = newSVsv (callback); \
		1314	req->pri = req_pri
927		1315
928	#define REQ_SEND \	1316	#define REQ_SEND \
929	req_send (req); \	1317	req_send (req); \
930	\	1318	\
931	if (GIMME_V != G_VOID) \	1319	if (GIMME_V != G_VOID) \
…		…
936	PROTOTYPES: ENABLE	1324	PROTOTYPES: ENABLE
937		1325
938	BOOT:	1326	BOOT:
939	{	1327	{
940	HV *stash = gv_stashpv ("IO::AIO", 1);	1328	HV *stash = gv_stashpv ("IO::AIO", 1);
		1329
941	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
942	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
943	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));
944		1337
945	create_pipe ();	1338	create_pipe ();
946	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
947	}	1340	}
948		1341
949	void	1342	void
950	min_parallel (nthreads)	1343	max_poll_reqs (int nreqs)
951	int nthreads
952	PROTOTYPE: $	1344	PROTOTYPE: $
		1345	CODE:
		1346	max_poll_reqs = nreqs;
953		1347
954	void	1348	void
955	max_parallel (nthreads)	1349	max_poll_time (double nseconds)
956	int nthreads
957	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);
958		1367
959	int	1368	int
960	max_outstanding (nreqs)	1369	max_outstanding (int maxreqs)
961	int nreqs	1370	PROTOTYPE: $
962	PROTOTYPE: $
963	CODE:	1371	CODE:
964	RETVAL = max_outstanding;	1372	RETVAL = max_outstanding;
965	max_outstanding = nreqs;	1373	max_outstanding = maxreqs;
		1374	OUTPUT:
		1375	RETVAL
966		1376
967	void	1377	void
968	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
969	SV * pathname	1379	SV8 * pathname
970	int flags	1380	int flags
971	int mode	1381	int mode
972	SV * callback	1382	SV * callback
973	PROTOTYPE: $$$;$	1383	PROTOTYPE: $$$;$
974	PPCODE:	1384	PPCODE:
975	{	1385	{
976	dREQ;	1386	dREQ;
977		1387
978	req->type = REQ_OPEN;	1388	req->type = REQ_OPEN;
979	req->data = newSVsv (pathname);	1389	req->sv1 = newSVsv (pathname);
980	req->dataptr = SvPVbyte_nolen (req->data);	1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
981	req->fd = flags;	1391	req->int1 = flags;
982	req->mode = mode;	1392	req->mode = mode;
983		1393
984	REQ_SEND;	1394	REQ_SEND;
985	}	1395	}
986		1396
…		…
996	PPCODE:	1406	PPCODE:
997	{	1407	{
998	dREQ;	1408	dREQ;
999		1409
1000	req->type = ix;	1410	req->type = ix;
1001	req->fh = newSVsv (fh);	1411	req->fh = newSVsv (fh);
1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1003		1413
1004	REQ_SEND (req);	1414	REQ_SEND (req);
1005	}	1415	}
1006		1416
1007	void	1417	void
1008	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1009	SV * fh	1419	SV * fh
1010	UV offset	1420	UV offset
1011	UV length	1421	UV length
1012	SV * data	1422	SV8 * data
1013	UV dataoffset	1423	UV dataoffset
1014	SV * callback	1424	SV * callback
1015	ALIAS:	1425	ALIAS:
1016	aio_read = REQ_READ	1426	aio_read = REQ_READ
1017	aio_write = REQ_WRITE	1427	aio_write = REQ_WRITE
1018	PROTOTYPE: $$$$$;$	1428	PROTOTYPE: $$$$$;$
1019	PPCODE:	1429	PPCODE:
1020	{	1430	{
1021	aio_req req;
1022	STRLEN svlen;	1431	STRLEN svlen;
1023	char *svptr = SvPVbyte (data, svlen);	1432	char *svptr = SvPVbyte (data, svlen);
1024		1433
1025	SvUPGRADE (data, SVt_PV);	1434	SvUPGRADE (data, SVt_PV);
1026	SvPOK_on (data);	1435	SvPOK_on (data);
…		…
1038	length = svlen - dataoffset;	1447	length = svlen - dataoffset;
1039	}	1448	}
1040	else	1449	else
1041	{	1450	{
1042	/* read: grow scalar as necessary */	1451	/* read: grow scalar as necessary */
1043	svptr = SvGROW (data, length + dataoffset);	1452	svptr = SvGROW (data, length + dataoffset + 1);
1044	}	1453	}
1045		1454
1046	if (length < 0)	1455	if (length < 0)
1047	croak ("length must not be negative");	1456	croak ("length must not be negative");
1048		1457
1049	{	1458	{
1050	dREQ;	1459	dREQ;
1051		1460
1052	req->type = ix;	1461	req->type = ix;
1053	req->fh = newSVsv (fh);	1462	req->fh = newSVsv (fh);
1054	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1055	: IoOFP (sv_2io (fh)));	1464	: IoOFP (sv_2io (fh)));
1056	req->offset = offset;	1465	req->offs = offset;
1057	req->length = length;	1466	req->size = length;
1058	req->data = SvREFCNT_inc (data);	1467	req->sv1 = SvREFCNT_inc (data);
1059	req->dataptr = (char *)svptr + dataoffset;	1468	req->ptr1 = (char *)svptr + dataoffset;
		1469	req->stroffset = dataoffset;
1060		1470
1061	if (!SvREADONLY (data))	1471	if (!SvREADONLY (data))
1062	{	1472	{
1063	SvREADONLY_on (data);	1473	SvREADONLY_on (data);
1064	req->data2ptr = (void *)data;	1474	req->flags |= FLAG_SV1_RO_OFF;
1065	}	1475	}
1066		1476
1067	REQ_SEND;	1477	REQ_SEND;
1068	}	1478	}
		1479	}
		1480
		1481	void
		1482	aio_readlink (path,callback=&PL_sv_undef)
		1483	SV8 * path
		1484	SV * callback
		1485	PROTOTYPE: $$;$
		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;
1069	}	1501	}
1070		1502
1071	void	1503	void
1072	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)
1073	SV * out_fh	1505	SV * out_fh
…		…
1079	PPCODE:	1511	PPCODE:
1080	{	1512	{
1081	dREQ;	1513	dREQ;
1082		1514
1083	req->type = REQ_SENDFILE;	1515	req->type = REQ_SENDFILE;
1084	req->fh = newSVsv (out_fh);	1516	req->fh = newSVsv (out_fh);
1085	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1086	req->fh2 = newSVsv (in_fh);	1518	req->sv2 = newSVsv (in_fh);
1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1088	req->offset = in_offset;	1520	req->offs = in_offset;
1089	req->length = length;	1521	req->size = length;
1090		1522
1091	REQ_SEND;	1523	REQ_SEND;
1092	}	1524	}
1093		1525
1094	void	1526	void
…		…
1101	PPCODE:	1533	PPCODE:
1102	{	1534	{
1103	dREQ;	1535	dREQ;
1104		1536
1105	req->type = REQ_READAHEAD;	1537	req->type = REQ_READAHEAD;
1106	req->fh = newSVsv (fh);	1538	req->fh = newSVsv (fh);
1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1108	req->offset = offset;	1540	req->offs = offset;
1109	req->length = length;	1541	req->size = length;
1110		1542
1111	REQ_SEND;	1543	REQ_SEND;
1112	}	1544	}
1113		1545
1114	void	1546	void
1115	aio_stat (fh_or_path,callback=&PL_sv_undef)	1547	aio_stat (fh_or_path,callback=&PL_sv_undef)
1116	SV * fh_or_path	1548	SV8 * fh_or_path
1117	SV * callback	1549	SV * callback
1118	ALIAS:	1550	ALIAS:
1119	aio_stat = REQ_STAT	1551	aio_stat = REQ_STAT
1120	aio_lstat = REQ_LSTAT	1552	aio_lstat = REQ_LSTAT
1121	PPCODE:	1553	PPCODE:
1122	{	1554	{
1123	dREQ;	1555	dREQ;
1124		1556
1125	New (0, req->statdata, 1, Stat_t);	1557	req->ptr2 = malloc (sizeof (Stat_t));
1126	if (!req->statdata)	1558	if (!req->ptr2)
1127	{	1559	{
1128	req_free (req);	1560	req_free (req);
1129	croak ("out of memory during aio_req->statdata allocation");	1561	croak ("out of memory during aio_stat statdata allocation");
1130	}	1562	}
		1563
		1564	req->flags |= FLAG_PTR2_FREE;
1131		1565
1132	if (SvPOK (fh_or_path))	1566	if (SvPOK (fh_or_path))
1133	{	1567	{
1134	req->type = ix;	1568	req->type = ix;
1135	req->data = newSVsv (fh_or_path);	1569	req->sv1 = newSVsv (fh_or_path);
1136	req->dataptr = SvPVbyte_nolen (req->data);	1570	req->ptr1 = SvPVbyte_nolen (req->sv1);
1137	}	1571	}
1138	else	1572	else
1139	{	1573	{
1140	req->type = REQ_FSTAT;	1574	req->type = REQ_FSTAT;
1141	req->fh = newSVsv (fh_or_path);	1575	req->fh = newSVsv (fh_or_path);
1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1143	}	1577	}
1144		1578
1145	REQ_SEND;	1579	REQ_SEND;
1146	}	1580	}
1147		1581
1148	void	1582	void
1149	aio_unlink (pathname,callback=&PL_sv_undef)	1583	aio_unlink (pathname,callback=&PL_sv_undef)
1150	SV * pathname	1584	SV8 * pathname
1151	SV * callback	1585	SV * callback
1152	ALIAS:	1586	ALIAS:
1153	aio_unlink = REQ_UNLINK	1587	aio_unlink = REQ_UNLINK
1154	aio_rmdir = REQ_RMDIR	1588	aio_rmdir = REQ_RMDIR
1155	aio_readdir = REQ_READDIR	1589	aio_readdir = REQ_READDIR
1156	PPCODE:	1590	PPCODE:
1157	{	1591	{
1158	dREQ;	1592	dREQ;
1159		1593
1160	req->type = ix;	1594	req->type = ix;
1161	req->data = newSVsv (pathname);	1595	req->sv1 = newSVsv (pathname);
1162	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;
1163		1609
		1610	req->type = REQ_MKDIR;
		1611	req->sv1 = newSVsv (pathname);
		1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1613	req->mode = mode;
		1614
1164	REQ_SEND;	1615	REQ_SEND;
1165	}	1616	}
1166		1617
1167	void	1618	void
1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1169	SV * oldpath	1620	SV8 * oldpath
1170	SV * newpath	1621	SV8 * newpath
1171	SV * callback	1622	SV * callback
1172	ALIAS:	1623	ALIAS:
1173	aio_link = REQ_LINK	1624	aio_link = REQ_LINK
1174	aio_symlink = REQ_SYMLINK	1625	aio_symlink = REQ_SYMLINK
1175	aio_rename = REQ_RENAME	1626	aio_rename = REQ_RENAME
1176	PPCODE:	1627	PPCODE:
1177	{	1628	{
1178	dREQ;	1629	dREQ;
1179		1630
1180	req->type = ix;	1631	req->type = ix;
1181	req->fh = newSVsv (oldpath);	1632	req->fh = newSVsv (oldpath);
1182	req->data2ptr = SvPVbyte_nolen (req->fh);	1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1183	req->data = newSVsv (newpath);	1634	req->sv1 = newSVsv (newpath);
1184	req->dataptr = SvPVbyte_nolen (req->data);	1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1185		1636
1186	REQ_SEND;	1637	REQ_SEND;
1187	}	1638	}
1188		1639
1189	void	1640	void
1190	aio_sleep (delay,callback=&PL_sv_undef)	1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1191	double delay	1642	SV8 * pathname
		1643	UV mode
		1644	UV dev
1192	SV * callback	1645	SV * callback
1193	PPCODE:	1646	PPCODE:
1194	{	1647	{
1195	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	}
1196		1658
		1659	void
		1660	aio_busy (delay,callback=&PL_sv_undef)
		1661	double delay
		1662	SV * callback
		1663	PPCODE:
		1664	{
		1665	dREQ;
		1666
1197	req->type = REQ_SLEEP;	1667	req->type = REQ_BUSY;
1198	req->fd = delay < 0. ? 0 : delay;	1668	req->int1 = delay < 0. ? 0 : delay;
1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1200		1670
1201	REQ_SEND;	1671	REQ_SEND;
1202	}	1672	}
1203		1673
1204	void	1674	void
…		…
1206	SV * callback	1676	SV * callback
1207	PROTOTYPE: ;$	1677	PROTOTYPE: ;$
1208	PPCODE:	1678	PPCODE:
1209	{	1679	{
1210	dREQ;	1680	dREQ;
		1681
1211	req->type = REQ_GROUP;	1682	req->type = REQ_GROUP;
		1683
1212	req_send (req);	1684	req_send (req);
1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1214	}	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;
1215		1721
1216	void	1722	void
1217	flush ()	1723	flush ()
1218	PROTOTYPE:	1724	PROTOTYPE:
1219	CODE:	1725	CODE:
…		…
1221	{	1727	{
1222	poll_wait ();	1728	poll_wait ();
1223	poll_cb ();	1729	poll_cb ();
1224	}	1730	}
1225		1731
1226	void	1732	int
1227	poll()	1733	poll()
1228	PROTOTYPE:	1734	PROTOTYPE:
1229	CODE:	1735	CODE:
1230	if (nreqs)
1231	{
1232	poll_wait ();	1736	poll_wait ();
1233	poll_cb ();	1737	RETVAL = poll_cb ();
1234	}	1738	OUTPUT:
		1739	RETVAL
1235		1740
1236	int	1741	int
1237	poll_fileno()	1742	poll_fileno()
1238	PROTOTYPE:	1743	PROTOTYPE:
1239	CODE:	1744	CODE:
…		…
1251		1756
1252	void	1757	void
1253	poll_wait()	1758	poll_wait()
1254	PROTOTYPE:	1759	PROTOTYPE:
1255	CODE:	1760	CODE:
1256	if (nreqs)
1257	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	}
1258		1799
1259	int	1800	int
1260	nreqs()	1801	nreqs()
1261	PROTOTYPE:	1802	PROTOTYPE:
1262	CODE:	1803	CODE:
1263	RETVAL = nreqs;	1804	RETVAL = nreqs;
1264	OUTPUT:	1805	OUTPUT:
1265	RETVAL	1806	RETVAL
1266		1807
1267	PROTOTYPES: DISABLE	1808	int
1268		1809	nready()
1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1270
1271	void
1272	cancel (aio_req_ornot req)
1273	PROTOTYPE:	1810	PROTOTYPE:
1274	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:
1275	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);
1276		1848
1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1278		1850
1279	void	1851	void
1280	add (aio_req grp, ...)	1852	add (aio_req grp, ...)
1281	PPCODE:	1853	PPCODE:
1282	{	1854	{
1283	int i;	1855	int i;
1284	aio_req req;	1856	aio_req req;
1285		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
1286	if (grp->fd == 2)	1861	if (grp->int1 == 2)
1287	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");
1288		1863
1289	for (i = 1; i < items; ++i )	1864	for (i = 1; i < items; ++i )
1290	{	1865	{
1291	if (GIMME_V != G_VOID)	1866	if (GIMME_V != G_VOID)
…		…
1293		1868
1294	req = SvAIO_REQ (ST (i));	1869	req = SvAIO_REQ (ST (i));
1295		1870
1296	if (req)	1871	if (req)
1297	{	1872	{
1298	++grp->length;	1873	++grp->size;
1299	req->grp = grp;	1874	req->grp = grp;
1300		1875
1301	req->grp_prev = 0;	1876	req->grp_prev = 0;
1302	req->grp_next = grp->grp_first;	1877	req->grp_next = grp->grp_first;
1303		1878
…		…
1308	}	1883	}
1309	}	1884	}
1310	}	1885	}
1311		1886
1312	void	1887	void
		1888	cancel_subs (aio_req_ornot req)
		1889	CODE:
		1890	req_cancel_subs (req);
		1891
		1892	void
1313	result (aio_req grp, ...)	1893	result (aio_req grp, ...)
1314	CODE:	1894	CODE:
1315	{	1895	{
1316	int i;	1896	int i;
		1897	AV *av;
		1898
		1899	grp->errorno = errno;
		1900
1317	AV *av = newAV ();	1901	av = newAV ();
1318		1902
1319	for (i = 1; i < items; ++i )	1903	for (i = 1; i < items; ++i )
1320	av_push (av, newSVsv (ST (i)));	1904	av_push (av, newSVsv (ST (i)));
1321		1905
1322	SvREFCNT_dec (grp->data);	1906	SvREFCNT_dec (grp->sv1);
1323	grp->data = (SV *)av;	1907	grp->sv1 = (SV *)av;
1324	}	1908	}
1325		1909
1326	void	1910	void
1327	lock (aio_req grp)	1911	errno (aio_req grp, int errorno = errno)
		1912	CODE:
		1913	grp->errorno = errorno;
		1914
		1915	void
		1916	limit (aio_req grp, int limit)
1328	CODE:	1917	CODE:
1329	++grp->length;	1918	grp->int2 = limit;
		1919	aio_grp_feed (grp);
1330		1920
1331	void	1921	void
1332	unlock (aio_req grp)	1922	feed (aio_req grp, SV *callback=&PL_sv_undef)
1333	CODE:	1923	CODE:
1334	aio_grp_dec (grp);	1924	{
		1925	SvREFCNT_dec (grp->sv2);
		1926	grp->sv2 = newSVsv (callback);
1335		1927
1336	void	1928	if (grp->int2 <= 0)
1337	feeder_limit (aio_req grp, int limit)	1929	grp->int2 = 2;
1338	CODE:	1930
1339	grp->fd2 = limit;
1340	aio_grp_feed (grp);	1931	aio_grp_feed (grp);
1341
1342	void
1343	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1344	CODE:
1345	{
1346	SvREFCNT_dec (grp->fh2);
1347	grp->fh2 = newSVsv (callback);
1348
1349	if (grp->fd2 <= 0)
1350	grp->fd2 = 2;
1351
1352	aio_grp_feed (grp);
1353	}	1932	}
1354		1933

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