ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 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"
…		…
9		18
10	#include <pthread.h>	19	#include <pthread.h>
11		20
12	#include <stddef.h>	21	#include <stddef.h>
13	#include <errno.h>	22	#include <errno.h>
		23	#include <sys/time.h>
		24	#include <sys/select.h>
14	#include <sys/types.h>	25	#include <sys/types.h>
15	#include <sys/stat.h>	26	#include <sys/stat.h>
16	#include <limits.h>	27	#include <limits.h>
17	#include <unistd.h>	28	#include <unistd.h>
18	#include <fcntl.h>	29	#include <fcntl.h>
…		…
37	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
38	#ifndef NAME_MAX	49	#ifndef NAME_MAX
39	# define NAME_MAX 4096	50	# define NAME_MAX 4096
40	#endif	51	#endif
41		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
42	#if __ia64	58	#if __ia64
43	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	62	#else
45	# define STACKSIZE 8192	63	# define STACKSIZE 16384
46	#endif	64	#endif
		65
		66	/* buffer size for various temporary buffers */
		67	#define AIO_BUFSIZE 65536
		68
		69	#define dBUF \
		70	char *aio_buf; \
		71	LOCK (wrklock); \
		72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		73	UNLOCK (wrklock); \
		74	if (!aio_buf) \
		75	return -1;
47		76
48	enum {	77	enum {
49	REQ_QUIT,	78	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	79	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	83	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	85	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	86	REQ_LINK, REQ_SYMLINK,
		87	REQ_GROUP, REQ_NOP,
		88	REQ_BUSY,
58	};	89	};
59		90
60	#define AIO_CB_KLASS "IO::AIO::CB"	91	#define AIO_REQ_KLASS "IO::AIO::REQ"
		92	#define AIO_GRP_KLASS "IO::AIO::GRP"
61		93
62	typedef struct aio_cb	94	typedef struct aio_cb
63	{	95	{
64	struct aio_cb *grp_prev, *grp_next;
65	struct aio_grp *grp;
66
67	struct aio_cb *volatile next;	96	struct aio_cb *volatile next;
68
69	SV *self; /* the perl counterpart of this request, if any */
70		97
71	SV *data, *callback;	98	SV *data, *callback;
72	SV *fh, *fh2;	99	SV *fh, *fh2;
73	void *dataptr, *data2ptr;	100	void *dataptr, *data2ptr;
74	Stat_t *statdata;	101	Stat_t *statdata;
75	off_t offset;	102	off_t offset;
76	size_t length;	103	size_t length;
77	ssize_t result;	104	ssize_t result;
78		105
		106	STRLEN dataoffset;
79	int type;	107	int type;
80	int fd, fd2;	108	int fd, fd2;
81	int errorno;	109	int errorno;
82	STRLEN dataoffset;
83	mode_t mode; /* open */	110	mode_t mode; /* open */
		111
84	unsigned char cancelled;	112	unsigned char flags;
		113	unsigned char pri;
		114
		115	SV *self; /* the perl counterpart of this request, if any */
		116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
85	} aio_cb;	117	} aio_cb;
		118
		119	enum {
		120	FLAG_CANCELLED = 0x01,
		121	};
86		122
87	typedef aio_cb *aio_req;	123	typedef aio_cb *aio_req;
88	typedef aio_cb *aio_req_ornot;	124	typedef aio_cb *aio_req_ornot;
89		125
		126	enum {
		127	PRI_MIN = -4,
		128	PRI_MAX = 4,
		129
		130	DEFAULT_PRI = 0,
		131	PRI_BIAS = -PRI_MIN,
		132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		133	};
		134
		135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		136
90	static int started, wanted;	137	static unsigned int started, wanted;
91	static volatile int nreqs;	138	static volatile unsigned int nreqs;
92	static int max_outstanding = 1<<30;	139	static volatile unsigned int max_outstanding = 0xffffffff;
93	static int respipe [2];	140	static int respipe [2];
94		141
		142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		144	#else
		145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		146	#endif
		147
		148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		150
		151	/* worker threads management */
		152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		153
		154	typedef struct worker {
		155	/* locked by wrklock */
		156	struct worker *prev, *next;
		157
		158	pthread_t tid;
		159
		160	/* locked by reslock, reqlock or wrklock */
		161	aio_req req; /* currently processed request */
		162	void *dbuf;
		163	DIR *dirp;
		164	} worker;
		165
		166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		167
		168	static void worker_clear (worker *wrk)
		169	{
		170	if (wrk->dirp)
		171	{
		172	closedir (wrk->dirp);
		173	wrk->dirp = 0;
		174	}
		175
		176	if (wrk->dbuf)
		177	{
		178	free (wrk->dbuf);
		179	wrk->dbuf = 0;
		180	}
		181	}
		182
		183	static void worker_free (worker *wrk)
		184	{
		185	wrk->next->prev = wrk->prev;
		186	wrk->prev->next = wrk->next;
		187
		188	free (wrk);
		189	}
		190
95	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
96	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
97	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
98		194
99	static volatile aio_req reqs, reqe; /* queue start, queue end */	195	/*
100	static volatile aio_req ress, rese; /* queue start, queue end */	196	* a somewhat faster data structure might be nice, but
101		197	* with 8 priorities this actually needs <20 insns
		198	* per shift, the most expensive operation.
		199	*/
102	typedef struct aio_grp	200	typedef struct {
103	{	201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
104	struct aio_cb *first, *last;	202	int size;
105	SV *callback;	203	} reqq;
106	int busycount;
107	} aio_grp;
108		204
109	static void aio_grp_begin (aio_grp *grp)	205	static reqq req_queue;
110	{	206	static reqq res_queue;
111	++grp->busycount;
112	}
113		207
114	static void aio_grp_end (aio_grp *grp)	208	int reqq_push (reqq *q, aio_req req)
115	{	209	{
116	--grp->busycount;	210	int pri = req->pri;
		211	req->next = 0;
117		212
118	if (grp->busycount)	213	if (q->qe[pri])
		214	{
		215	q->qe[pri]->next = req;
		216	q->qe[pri] = req;
		217	}
		218	else
		219	q->qe[pri] = q->qs[pri] = req;
		220
		221	return q->size++;
		222	}
		223
		224	aio_req reqq_shift (reqq *q)
		225	{
		226	int pri;
		227
		228	if (!q->size)
119	return;	229	return 0;
120		230
121	SvREFCNT_dec (grp->callback);	231	--q->size;
122	grp->callback = 0;
123	}
124		232
125	static aio_grp *aio_grp_new ()	233	for (pri = NUM_PRI; pri--; )
126	{	234	{
127	aio_grp *grp;	235	aio_req req = q->qs[pri];
128		236
129	Newz (0, grp, 1, aio_grp);	237	if (req)
130	aio_grp_begin (grp);	238	{
		239	if (!(q->qs[pri] = req->next))
		240	q->qe[pri] = 0;
131		241
132	return grp;	242	return req;
		243	}
		244	}
		245
		246	abort ();
133	}	247	}
		248
		249	static int poll_cb (int max);
		250	static void req_invoke (aio_req req);
		251	static void req_free (aio_req req);
		252	static void req_cancel (aio_req req);
134		253
135	/* must be called at most once */	254	/* must be called at most once */
136	static SV *req_sv (aio_req req)	255	static SV *req_sv (aio_req req, const char *klass)
137	{	256	{
		257	if (!req->self)
		258	{
138	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
139	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
140		262
141	return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
142	}	264	}
143		265
144	static aio_req SvAIO_REQ (SV *sv)	266	static aio_req SvAIO_REQ (SV *sv)
145	{	267	{
		268	MAGIC *mg;
		269
146	if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv))	270	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
147	croak ("object of class " AIO_CB_KLASS " expected");	271	croak ("object of class " AIO_REQ_KLASS " expected");
148		272
149	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
150		274
151	return mg ? (aio_req)mg->mg_ptr : 0;	275	return mg ? (aio_req)mg->mg_ptr : 0;
		276	}
		277
		278	static void aio_grp_feed (aio_req grp)
		279	{
		280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		281	{
		282	int old_len = grp->length;
		283
		284	if (grp->fh2 && SvOK (grp->fh2))
		285	{
		286	dSP;
		287
		288	ENTER;
		289	SAVETMPS;
		290	PUSHMARK (SP);
		291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		292	PUTBACK;
		293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		294	SPAGAIN;
		295	FREETMPS;
		296	LEAVE;
		297	}
		298
		299	/* stop if no progress has been made */
		300	if (old_len == grp->length)
		301	{
		302	SvREFCNT_dec (grp->fh2);
		303	grp->fh2 = 0;
		304	break;
		305	}
		306	}
		307	}
		308
		309	static void aio_grp_dec (aio_req grp)
		310	{
		311	--grp->length;
		312
		313	/* call feeder, if applicable */
		314	aio_grp_feed (grp);
		315
		316	/* finish, if done */
		317	if (!grp->length && grp->fd)
		318	{
		319	req_invoke (grp);
		320	req_free (grp);
		321	}
		322	}
		323
		324	static void poll_wait ()
		325	{
		326	fd_set rfd;
		327
		328	while (nreqs)
		329	{
		330	int size;
		331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		332	LOCK (reslock);
		333	#endif
		334	size = res_queue.size;
		335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		336	UNLOCK (reslock);
		337	#endif
		338
		339	if (size)
		340	return;
		341
		342	FD_ZERO(&rfd);
		343	FD_SET(respipe [0], &rfd);
		344
		345	select (respipe [0] + 1, &rfd, 0, 0, 0);
		346	}
		347	}
		348
		349	static void req_invoke (aio_req req)
		350	{
		351	dSP;
		352
		353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		354	{
		355	errno = req->errorno;
		356
		357	ENTER;
		358	SAVETMPS;
		359	PUSHMARK (SP);
		360	EXTEND (SP, 1);
		361
		362	switch (req->type)
		363	{
		364	case REQ_READDIR:
		365	{
		366	SV *rv = &PL_sv_undef;
		367
		368	if (req->result >= 0)
		369	{
		370	int i;
		371	char *buf = req->data2ptr;
		372	AV *av = newAV ();
		373
		374	av_extend (av, req->result - 1);
		375
		376	for (i = 0; i < req->result; ++i)
		377	{
		378	SV *sv = newSVpv (buf, 0);
		379
		380	av_store (av, i, sv);
		381	buf += SvCUR (sv) + 1;
		382	}
		383
		384	rv = sv_2mortal (newRV_noinc ((SV *)av));
		385	}
		386
		387	PUSHs (rv);
		388	}
		389	break;
		390
		391	case REQ_OPEN:
		392	{
		393	/* convert fd to fh */
		394	SV *fh;
		395
		396	PUSHs (sv_2mortal (newSViv (req->result)));
		397	PUTBACK;
		398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		399	SPAGAIN;
		400
		401	fh = SvREFCNT_inc (POPs);
		402
		403	PUSHMARK (SP);
		404	XPUSHs (sv_2mortal (fh));
		405	}
		406	break;
		407
		408	case REQ_GROUP:
		409	req->fd = 2; /* mark group as finished */
		410
		411	if (req->data)
		412	{
		413	int i;
		414	AV *av = (AV *)req->data;
		415
		416	EXTEND (SP, AvFILL (av) + 1);
		417	for (i = 0; i <= AvFILL (av); ++i)
		418	PUSHs (*av_fetch (av, i, 0));
		419	}
		420	break;
		421
		422	case REQ_NOP:
		423	case REQ_BUSY:
		424	break;
		425
		426	default:
		427	PUSHs (sv_2mortal (newSViv (req->result)));
		428	break;
		429	}
		430
		431
		432	PUTBACK;
		433	call_sv (req->callback, G_VOID | G_EVAL);
		434	SPAGAIN;
		435
		436	FREETMPS;
		437	LEAVE;
		438	}
		439
		440	if (req->grp)
		441	{
		442	aio_req grp = req->grp;
		443
		444	/* unlink request */
		445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		447
		448	if (grp->grp_first == req)
		449	grp->grp_first = req->grp_next;
		450
		451	aio_grp_dec (grp);
		452	}
		453
		454	if (SvTRUE (ERRSV))
		455	{
		456	req_free (req);
		457	croak (0);
		458	}
152	}	459	}
153		460
154	static void req_free (aio_req req)	461	static void req_free (aio_req req)
155	{	462	{
156	if (req->self)	463	if (req->self)
157	{	464	{
158	sv_unmagic (req->self, PERL_MAGIC_ext);	465	sv_unmagic (req->self, PERL_MAGIC_ext);
159	SvREFCNT_dec (req->self);	466	SvREFCNT_dec (req->self);
160	}	467	}
161		468
162	if (req->data)
163	SvREFCNT_dec (req->data);	469	SvREFCNT_dec (req->data);
164
165	if (req->fh)
166	SvREFCNT_dec (req->fh);	470	SvREFCNT_dec (req->fh);
167
168	if (req->fh2)
169	SvREFCNT_dec (req->fh2);	471	SvREFCNT_dec (req->fh2);
170
171	if (req->statdata)
172	Safefree (req->statdata);
173
174	if (req->callback)
175	SvREFCNT_dec (req->callback);	472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
176		474
177	if (req->type == REQ_READDIR && req->result >= 0)	475	if (req->type == REQ_READDIR)
178	free (req->data2ptr);	476	free (req->data2ptr);
179		477
180	Safefree (req);	478	Safefree (req);
181	}	479	}
182		480
183	static void	481	static void req_cancel_subs (aio_req grp)
184	poll_wait ()
185	{	482	{
186	if (nreqs && !ress)	483	aio_req sub;
187	{
188	fd_set rfd;
189	FD_ZERO(&rfd);
190	FD_SET(respipe [0], &rfd);
191		484
192	select (respipe [0] + 1, &rfd, 0, 0, 0);	485	if (grp->type != REQ_GROUP)
193	}	486	return;
194	}
195		487
196	static int	488	SvREFCNT_dec (grp->fh2);
197	poll_cb ()	489	grp->fh2 = 0;
		490
		491	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		492	req_cancel (sub);
		493	}
		494
		495	static void req_cancel (aio_req req)
		496	{
		497	req->flags |= FLAG_CANCELLED;
		498
		499	req_cancel_subs (req);
		500	}
		501
		502	static int poll_cb (int max)
198	{	503	{
199	dSP;	504	dSP;
200	int count = 0;	505	int count = 0;
201	int do_croak = 0;	506	int do_croak = 0;
202	aio_req req;	507	aio_req req;
203		508
204	for (;;)	509	for (;;)
205	{	510	{
206	pthread_mutex_lock (&reslock);	511	while (max <= 0 || count < max)
207	req = ress;
208
209	if (req)
210	{	512	{
211	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
212		515
213	if (!ress)	516	if (req)
214	{	517	{
		518	if (!res_queue.size)
		519	{
215	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
216	char buf [32];	521	char buf [32];
217	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
218	;	524	}
219
220	rese = 0;
221	}	525	}
222	}
223		526
224	pthread_mutex_unlock (&reslock);	527	UNLOCK (reslock);
225		528
226	if (!req)	529	if (!req)
227	break;	530	break;
228		531
229	nreqs--;	532	--nreqs;
230		533
231	if (req->type == REQ_QUIT)	534	if (req->type == REQ_QUIT)
232	started--;	535	--started;
233	else	536	else if (req->type == REQ_GROUP && req->length)
234	{
235	int errorno = errno;
236	errno = req->errorno;
237
238	if (req->type == REQ_READ)
239	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
240
241	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
242	SvREADONLY_off (req->data);
243
244	if (req->statdata)
245	{	537	{
246	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	538	req->fd = 1; /* mark request as delayed */
247	PL_laststatval = req->result;	539	continue;
248	PL_statcache = *(req->statdata);
249	}
250
251	ENTER;
252	PUSHMARK (SP);
253
254	if (req->type == REQ_READDIR)
255	{
256	SV *rv = &PL_sv_undef;
257
258	if (req->result >= 0)
259	{
260	char *buf = req->data2ptr;
261	AV *av = newAV ();
262
263	while (req->result)
264	{
265	SV *sv = newSVpv (buf, 0);
266
267	av_push (av, sv);
268	buf += SvCUR (sv) + 1;
269	req->result--;
270	}
271
272	rv = sv_2mortal (newRV_noinc ((SV *)av));
273	}
274
275	XPUSHs (rv);
276	}	540	}
277	else	541	else
278	{	542	{
279	XPUSHs (sv_2mortal (newSViv (req->result)));
280
281	if (req->type == REQ_OPEN)	543	if (req->type == REQ_READ)
		544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		545
		546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		547	SvREADONLY_off (req->data);
		548
		549	if (req->statdata)
282	{	550	{
283	/* convert fd to fh */	551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
284	SV *fh;	552	PL_laststatval = req->result;
285		553	PL_statcache = *(req->statdata);
286	PUTBACK;
287	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
288	SPAGAIN;
289
290	fh = SvREFCNT_inc (POPs);
291
292	PUSHMARK (SP);
293	XPUSHs (sv_2mortal (fh));
294	}	554	}
		555
		556	req_invoke (req);
		557
		558	count++;
295	}	559	}
296		560
297	if (SvOK (req->callback) && !req->cancelled)
298	{
299	PUTBACK;
300	call_sv (req->callback, G_VOID | G_EVAL);
301	SPAGAIN;
302
303	if (SvTRUE (ERRSV))
304	{
305	req_free (req);	561	req_free (req);
306	croak (0);
307	}
308	}
309
310	LEAVE;
311
312	errno = errorno;
313	count++;
314	}	562	}
315		563
316	req_free (req);	564	if (nreqs <= max_outstanding)
		565	break;
		566
		567	poll_wait ();
		568
		569	max = 0;
317	}	570	}
318		571
319	return count;	572	return count;
320	}	573	}
321		574
322	static void *aio_proc(void *arg);	575	static void *aio_proc(void *arg);
323		576
324	static void
325	start_thread (void)	577	static void start_thread (void)
326	{	578	{
327	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
328	pthread_t tid;
329	pthread_attr_t attr;	580	pthread_attr_t attr;
		581
		582	worker *wrk = calloc (1, sizeof (worker));
		583
		584	if (!wrk)
		585	croak ("unable to allocate worker thread data");
330		586
331	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
332	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
333	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
334		590
335	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
336	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
337		595
338	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		597	{
		598	wrk->prev = &wrk_first;
		599	wrk->next = wrk_first.next;
		600	wrk_first.next->prev = wrk;
		601	wrk_first.next = wrk;
339	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
340		606
341	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
342	}	609	}
343		610
344	static void
345	req_send (aio_req req)	611	static void req_send (aio_req req)
346	{	612	{
347	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
348	start_thread ();	614	start_thread ();
349		615
350	nreqs++;	616	++nreqs;
351		617
352	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
353		619	reqq_push (&req_queue, req);
354	req->next = 0;
355
356	if (reqe)
357	{
358	reqe->next = req;
359	reqe = req;
360	}
361	else
362	reqe = reqs = req;
363
364	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
365	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
366
367	if (nreqs > max_outstanding)
368	for (;;)
369	{
370	poll_cb ();
371
372	if (nreqs <= max_outstanding)
373	break;
374
375	poll_wait ();
376	}
377	}	622	}
378		623
379	static void	624	static void end_thread (void)
380	end_thread (void)
381	{	625	{
382	aio_req req;	626	aio_req req;
		627
383	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
384	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
385		632
386	req_send (req);	633	req_send (req);
387	}	634	}
388		635
389	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
…		…
406	}	653	}
407		654
408	while (started > wanted)	655	while (started > wanted)
409	{	656	{
410	poll_wait ();	657	poll_wait ();
411	poll_cb ();	658	poll_cb (0);
412	}	659	}
413	}	660	}
414		661
415	static void create_pipe ()	662	static void create_pipe ()
416	{	663	{
…		…
436	* normal read/write by using a mutex. slows down execution a lot,	683	* normal read/write by using a mutex. slows down execution a lot,
437	* but that's your problem, not mine.	684	* but that's your problem, not mine.
438	*/	685	*/
439	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
440		687
441	static ssize_t	688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
442	pread (int fd, void *buf, size_t count, off_t offset)
443	{	689	{
444	ssize_t res;	690	ssize_t res;
445	off_t ooffset;	691	off_t ooffset;
446		692
447	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
448	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
449	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
450	res = read (fd, buf, count);	696	res = read (fd, buf, count);
451	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
452	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
453		699
454	return res;	700	return res;
455	}	701	}
456		702
457	static ssize_t
458	pwrite (int fd, void *buf, size_t count, off_t offset)	703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
459	{	704	{
460	ssize_t res;	705	ssize_t res;
461	off_t ooffset;	706	off_t ooffset;
462		707
463	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
464	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
465	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
466	res = write (fd, buf, count);	711	res = write (fd, buf, count);
467	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
468	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
469		714
470	return res;	715	return res;
471	}	716	}
472	#endif	717	#endif
473		718
474	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
475	# define fdatasync fsync	720	# define fdatasync fsync
476	#endif	721	#endif
477		722
478	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
479	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
480		725
481	static ssize_t	726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
482	readahead (int fd, off_t offset, size_t count)
483	{	727	{
484	char readahead_buf[4096];	728	dBUF;
485		729
486	while (count > 0)	730	while (count > 0)
487	{	731	{
488	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
489		733
490	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
491	offset += len;	735	offset += len;
492	count -= len;	736	count -= len;
493	}	737	}
494		738
495	errno = 0;	739	errno = 0;
496	}	740	}
		741
497	#endif	742	#endif
498		743
499	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
500	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
501		746
502	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503		748
504	static int
505	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
506	{	750	{
507	struct dirent *e;	751	struct dirent *e;
508	int errorno;	752	int errorno;
509		753
510	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
511		755
512	e = readdir (dirp);	756	e = readdir (dirp);
513	errorno = errno;	757	errorno = errno;
514		758
515	if (e)	759	if (e)
…		…
518	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
519	}	763	}
520	else	764	else
521	*res = 0;	765	*res = 0;
522		766
523	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
524		768
525	errno = errorno;	769	errno = errorno;
526	return e ? 0 : -1;	770	return e ? 0 : -1;
527	}	771	}
528	#endif	772	#endif
529		773
530	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
531	static ssize_t
532	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
533	{	776	{
534	ssize_t res;	777	ssize_t res;
535		778
536	if (!count)	779	if (!count)
537	return 0;	780	return 0;
…		…
548	{	791	{
549	off_t sbytes;	792	off_t sbytes;
550	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
551		794
552	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
553	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
554	res = sbytes;	797	res = sbytes;
555	}	798	}
556		799
557	# elif __hpux	800	# elif __hpux
558	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
586	#endif	829	#endif
587	)	830	)
588	)	831	)
589	{	832	{
590	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
591	char buf[4096];	834	dBUF;
		835
592	res = 0;	836	res = 0;
593		837
594	while (count)	838	while (count)
595	{	839	{
596	ssize_t cnt;	840	ssize_t cnt;
597		841
598	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
599		843
600	if (cnt <= 0)	844	if (cnt <= 0)
601	{	845	{
602	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
603	break;	847	break;
604	}	848	}
605		849
606	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
607		851
608	if (cnt <= 0)	852	if (cnt <= 0)
609	{	853	{
610	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
611	break;	855	break;
…		…
619		863
620	return res;	864	return res;
621	}	865	}
622		866
623	/* read a full directory */	867	/* read a full directory */
624	static int	868	static void scandir_ (aio_req req, worker *self)
625	scandir_ (const char *path, void **namesp)
626	{	869	{
627	DIR *dirp = opendir (path);	870	DIR *dirp;
628	union	871	union
629	{	872	{
630	struct dirent d;	873	struct dirent d;
631	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
632	} u;	875	} *u;
633	struct dirent *entp;	876	struct dirent *entp;
634	char *name, *names;	877	char *name, *names;
635	int memlen = 4096;	878	int memlen = 4096;
636	int memofs = 0;	879	int memofs = 0;
637	int res = 0;	880	int res = 0;
638	int errorno;	881	int errorno;
639		882
640	if (!dirp)	883	LOCK (wrklock);
641	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
642		885	self->dbuf = u = malloc (sizeof (*u));
643	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
644		888
		889	if (dirp && u && names)
645	for (;;)	890	for (;;)
646	{	891	{
		892	errno = 0;
647	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
648		894
649	if (!entp)	895	if (!entp)
650	break;	896	break;
651		897
652	name = entp->d_name;	898	name = entp->d_name;
653		899
654	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
655	{	901	{
656	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
657		903
658	res++;	904	res++;
659		905
660	while (memofs + len > memlen)	906	while (memofs + len > memlen)
661	{	907	{
662	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
663	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
664	if (!names)	913	if (!names)
665	break;	914	break;
666	}	915	}
667		916
668	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
669	memofs += len;	918	memofs += len;
670	}	919	}
671	}	920	}
672		921
673	errorno = errno;
674	closedir (dirp);
675
676	if (errorno)	922	if (errno)
677	{
678	free (names);
679	errno = errorno;
680	res = -1;	923	res = -1;
681	}	924
682		925	req->result = res;
683	*namesp = (void *)names;
684	return res;
685	}	926	}
686		927
687	/*****************************************************************************/	928	/*****************************************************************************/
688		929
689	static void *
690	aio_proc (void *thr_arg)	930	static void *aio_proc (void *thr_arg)
691	{	931	{
692	aio_req req;	932	aio_req req;
693	int type;	933	int type;
		934	worker *self = (worker *)thr_arg;
694		935
695	do	936	do
696	{	937	{
697	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
698		939
699	for (;;)	940	for (;;)
700	{	941	{
701	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
702
703	if (reqs)
704	{
705	reqs = reqs->next;
706	if (!reqs) reqe = 0;
707	}
708		943
709	if (req)	944	if (req)
710	break;	945	break;
711		946
712	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
713	}	948	}
714		949
715	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
716		951
717	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
718		954
719	if (!req->cancelled)	955	if (!(req->flags & FLAG_CANCELLED))
720	switch (req->type)	956	switch (type)
721	{	957	{
722	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
723	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
724		960
725	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
726	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
727		963
728	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
729	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
730	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
731		967
…		…
737	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
738	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
739		975
740	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
741	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
742	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
743		979
		980	case REQ_BUSY:
		981	{
		982	struct timeval tv;
		983
		984	tv.tv_sec = req->fd;
		985	tv.tv_usec = req->fd2;
		986
		987	req->result = select (0, 0, 0, 0, &tv);
		988	}
		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
744	case REQ_QUIT:	992	case REQ_QUIT:
745	break;	993	break;
746		994
747	default:	995	default:
748	req->result = ENOSYS;	996	req->result = ENOSYS;
749	break;	997	break;
750	}	998	}
751		999
752	req->errorno = errno;	1000	req->errorno = errno;
753		1001
754	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
755		1003
756	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
757
758	if (rese)
759	{
760	rese->next = req;
761	rese = req;
762	}
763	else
764	{
765	rese = ress = req;
766
767	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
768	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
769	}
770		1007
771	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
772	}	1012	}
773	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
774		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
775	return 0;	1019	return 0;
776	}	1020	}
777		1021
778	/*****************************************************************************/	1022	/*****************************************************************************/
779		1023
780	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
781	{	1025	{
782	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
783	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
784	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
785	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
786	#endif	1031	#endif
787	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
788	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
789	#endif	1034	#endif
790	}	1035	}
791		1036
792	static void atfork_parent (void)	1037	static void atfork_parent (void)
793	{	1038	{
794	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
795	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
796	#endif	1041	#endif
797	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
798	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
799	#endif	1044	#endif
800	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
801	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
802	}	1048	}
803		1049
804	static void atfork_child (void)	1050	static void atfork_child (void)
805	{	1051	{
806	aio_req prv;	1052	aio_req prv;
807		1053
		1054	while (prv = reqq_shift (&req_queue))
		1055	req_free (prv);
		1056
		1057	while (prv = reqq_shift (&res_queue))
		1058	req_free (prv);
		1059
		1060	while (wrk_first.next != &wrk_first)
		1061	{
		1062	worker *wrk = wrk_first.next;
		1063
		1064	if (wrk->req)
		1065	req_free (wrk->req);
		1066
		1067	worker_clear (wrk);
		1068	worker_free (wrk);
		1069	}
		1070
808	started = 0;	1071	started = 0;
809		1072	nreqs = 0;
810	while (reqs)
811	{
812	prv = reqs;
813	reqs = prv->next;
814	req_free (prv);
815	}
816
817	reqs = reqe = 0;
818
819	while (ress)
820	{
821	prv = ress;
822	ress = prv->next;
823	req_free (prv);
824	}
825
826	ress = rese = 0;
827		1073
828	close (respipe [0]);	1074	close (respipe [0]);
829	close (respipe [1]);	1075	close (respipe [1]);
830	create_pipe ();	1076	create_pipe ();
831		1077
832	atfork_parent ();	1078	atfork_parent ();
833	}	1079	}
834		1080
835	#define dREQ \	1081	#define dREQ \
836	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
837	\	1085	\
838	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
839	croak ("callback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
840	\	1088	\
841	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
842	if (!req) \	1090	if (!req) \
843	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
844	\	1092	\
845	req->callback = newSVsv (callback)	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
846		1095
847	#define REQ_SEND \	1096	#define REQ_SEND \
848	req_send (req); \	1097	req_send (req); \
849	\	1098	\
850	if (GIMME_V != G_VOID) \	1099	if (GIMME_V != G_VOID) \
851	XPUSHs (req_sv (req));	1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));
852		1101
853	MODULE = IO::AIO PACKAGE = IO::AIO	1102	MODULE = IO::AIO PACKAGE = IO::AIO
854		1103
855	PROTOTYPES: ENABLE	1104	PROTOTYPES: ENABLE
856		1105
…		…
864	create_pipe ();	1113	create_pipe ();
865	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
866	}	1115	}
867		1116
868	void	1117	void
869	min_parallel (nthreads)	1118	min_parallel (int nthreads)
870	int nthreads
871	PROTOTYPE: $	1119	PROTOTYPE: $
872		1120
873	void	1121	void
874	max_parallel (nthreads)	1122	max_parallel (int nthreads)
875	int nthreads
876	PROTOTYPE: $	1123	PROTOTYPE: $
877		1124
878	int	1125	int
879	max_outstanding (nreqs)	1126	max_outstanding (int maxreqs)
880	int nreqs	1127	PROTOTYPE: $
881	PROTOTYPE: $
882	CODE:	1128	CODE:
883	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
884	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
885		1133
886	void	1134	void
887	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
888	SV * pathname	1136	SV * pathname
889	int flags	1137	int flags
…		…
1103	req->dataptr = SvPVbyte_nolen (req->data);	1351	req->dataptr = SvPVbyte_nolen (req->data);
1104		1352
1105	REQ_SEND;	1353	REQ_SEND;
1106	}	1354	}
1107		1355
1108	#if 0
1109
1110	# undocumented, because it does not cancel active requests
1111	void	1356	void
1112	cancel_most_requests ()	1357	aio_busy (delay,callback=&PL_sv_undef)
		1358	double delay
		1359	SV * callback
		1360	PPCODE:
		1361	{
		1362	dREQ;
		1363
		1364	req->type = REQ_BUSY;
		1365	req->fd = delay < 0. ? 0 : delay;
		1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1367
		1368	REQ_SEND;
		1369	}
		1370
		1371	void
		1372	aio_group (callback=&PL_sv_undef)
		1373	SV * callback
1113	PROTOTYPE:	1374	PROTOTYPE: ;$
1114	CODE:	1375	PPCODE:
1115	{	1376	{
1116	aio_req *req;	1377	dREQ;
1117		1378
1118	pthread_mutex_lock (&reqlock);	1379	req->type = REQ_GROUP;
1119	for (req = reqs; req; req = req->next)	1380	req_send (req);
1120	req->flags |= 1;
1121	pthread_mutex_unlock (&reqlock);
1122		1381
1123	pthread_mutex_lock (&reslock);	1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1124	for (req = ress; req; req = req->next)
1125	req->flags |= 1;
1126	pthread_mutex_unlock (&reslock);
1127	}	1383	}
1128		1384
1129	#endif	1385	void
		1386	aio_nop (callback=&PL_sv_undef)
		1387	SV * callback
		1388	PPCODE:
		1389	{
		1390	dREQ;
		1391
		1392	req->type = REQ_NOP;
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aioreq_pri (int pri = DEFAULT_PRI)
		1399	CODE:
		1400	if (pri < PRI_MIN) pri = PRI_MIN;
		1401	if (pri > PRI_MAX) pri = PRI_MAX;
		1402	next_pri = pri + PRI_BIAS;
		1403
		1404	void
		1405	aioreq_nice (int nice = 0)
		1406	CODE:
		1407	nice = next_pri - nice;
		1408	if (nice < PRI_MIN) nice = PRI_MIN;
		1409	if (nice > PRI_MAX) nice = PRI_MAX;
		1410	next_pri = nice + PRI_BIAS;
1130		1411
1131	void	1412	void
1132	flush ()	1413	flush ()
1133	PROTOTYPE:	1414	PROTOTYPE:
1134	CODE:	1415	CODE:
1135	while (nreqs)	1416	while (nreqs)
1136	{	1417	{
1137	poll_wait ();	1418	poll_wait ();
1138	poll_cb ();	1419	poll_cb (0);
1139	}	1420	}
1140		1421
1141	void	1422	void
1142	poll()	1423	poll()
1143	PROTOTYPE:	1424	PROTOTYPE:
1144	CODE:	1425	CODE:
1145	if (nreqs)	1426	if (nreqs)
1146	{	1427	{
1147	poll_wait ();	1428	poll_wait ();
1148	poll_cb ();	1429	poll_cb (0);
1149	}	1430	}
1150		1431
1151	int	1432	int
1152	poll_fileno()	1433	poll_fileno()
1153	PROTOTYPE:	1434	PROTOTYPE:
…		…
1158		1439
1159	int	1440	int
1160	poll_cb(...)	1441	poll_cb(...)
1161	PROTOTYPE:	1442	PROTOTYPE:
1162	CODE:	1443	CODE:
1163	RETVAL = poll_cb ();	1444	RETVAL = poll_cb (0);
		1445	OUTPUT:
		1446	RETVAL
		1447
		1448	int
		1449	poll_some(int max = 0)
		1450	PROTOTYPE: $
		1451	CODE:
		1452	RETVAL = poll_cb (max);
1164	OUTPUT:	1453	OUTPUT:
1165	RETVAL	1454	RETVAL
1166		1455
1167	void	1456	void
1168	poll_wait()	1457	poll_wait()
…		…
1177	CODE:	1466	CODE:
1178	RETVAL = nreqs;	1467	RETVAL = nreqs;
1179	OUTPUT:	1468	OUTPUT:
1180	RETVAL	1469	RETVAL
1181		1470
		1471	PROTOTYPES: DISABLE
		1472
1182	MODULE = IO::AIO PACKAGE = IO::AIO::CB	1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1183		1474
1184	void	1475	void
1185	cancel (aio_req_ornot req)	1476	cancel (aio_req_ornot req)
1186	PROTOTYPE:
1187	CODE:	1477	CODE:
1188	req->cancelled = 1;	1478	req_cancel (req);
1189		1479
		1480	void
		1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1482	CODE:
		1483	SvREFCNT_dec (req->callback);
		1484	req->callback = newSVsv (callback);
		1485
		1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1487
		1488	void
		1489	add (aio_req grp, ...)
		1490	PPCODE:
		1491	{
		1492	int i;
		1493	aio_req req;
		1494
		1495	if (grp->fd == 2)
		1496	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1497
		1498	for (i = 1; i < items; ++i )
		1499	{
		1500	if (GIMME_V != G_VOID)
		1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1502
		1503	req = SvAIO_REQ (ST (i));
		1504
		1505	if (req)
		1506	{
		1507	++grp->length;
		1508	req->grp = grp;
		1509
		1510	req->grp_prev = 0;
		1511	req->grp_next = grp->grp_first;
		1512
		1513	if (grp->grp_first)
		1514	grp->grp_first->grp_prev = req;
		1515
		1516	grp->grp_first = req;
		1517	}
		1518	}
		1519	}
		1520
		1521	void
		1522	cancel_subs (aio_req_ornot req)
		1523	CODE:
		1524	req_cancel_subs (req);
		1525
		1526	void
		1527	result (aio_req grp, ...)
		1528	CODE:
		1529	{
		1530	int i;
		1531	AV *av = newAV ();
		1532
		1533	for (i = 1; i < items; ++i )
		1534	av_push (av, newSVsv (ST (i)));
		1535
		1536	SvREFCNT_dec (grp->data);
		1537	grp->data = (SV *)av;
		1538	}
		1539
		1540	void
		1541	limit (aio_req grp, int limit)
		1542	CODE:
		1543	grp->fd2 = limit;
		1544	aio_grp_feed (grp);
		1545
		1546	void
		1547	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1548	CODE:
		1549	{
		1550	SvREFCNT_dec (grp->fh2);
		1551	grp->fh2 = newSVsv (callback);
		1552
		1553	if (grp->fd2 <= 0)
		1554	grp->fd2 = 2;
		1555
		1556	aio_grp_feed (grp);
		1557	}
		1558

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines