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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.46 by root, Sun Oct 22 00:49:29 2006 UTC vs.
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC

1	#define _REENTRANT 1	1	#include "xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define SIGIO 0
		21	typedef Direntry_t X_DIRENT;
		22	#undef malloc
		23	#undef free
		24
		25	// perl overrides all those nice win32 functions
		26	# undef open
		27	# undef read
		28	# undef write
		29	# undef send
		30	# undef recv
		31	# undef stat
		32	# undef fstat
		33	# define lstat stat
		34	# undef truncate
		35	# undef ftruncate
		36	# undef open
		37	# undef close
		38	# undef unlink
		39	# undef rmdir
		40	# undef rename
		41	# undef lseek
		42
		43	# define chown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchown(a,b,c) (errno = ENOSYS, -1)
		45	# define fchmod(a,b) (errno = ENOSYS, -1)
		46	# define symlink(a,b) (errno = ENOSYS, -1)
		47	# define readlink(a,b,c) (errno = ENOSYS, -1)
		48	# define mknod(a,b,c) (errno = ENOSYS, -1)
		49	# define truncate(a,b) (errno = ENOSYS, -1)
		50	# define ftruncate(fd,o) chsize ((fd), (o))
		51	# define fsync(fd) _commit (fd)
		52	# define opendir(fd) (errno = ENOSYS, 0)
		53	# define readdir(fd) (errno = ENOSYS, -1)
		54	# define closedir(fd) (errno = ENOSYS, -1)
		55	# define mkdir(a,b) mkdir (a)
		56
		57	#else
		58
		59	# include "autoconf/config.h"
		60	# include <sys/time.h>
		61	# include <sys/select.h>
		62	# include <unistd.h>
		63	# include <utime.h>
		64	# include <signal.h>
		65	typedef struct dirent X_DIRENT;
		66
		67	#endif
23		68
24	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
25	# if __linux	70	# if __linux
26	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
27	# elif __freebsd	72	# elif __freebsd
…		…
34	# else	79	# else
35	# error sendfile support requested but not available	80	# error sendfile support requested but not available
36	# endif	81	# endif
37	#endif	82	#endif
38		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
39	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	88	#ifndef NAME_MAX
41	# define NAME_MAX 4096	89	# define NAME_MAX 4096
42	#endif	90	#endif
43		91
44	#if __ia64	92	/* buffer size for various temporary buffers */
45	# define STACKSIZE 65536	93	#define AIO_BUFSIZE 65536
		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
46	#else	98	#else
47	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
48	#endif	100	#endif
		101
		102	#define dBUF \
		103	char *aio_buf; \
		104	X_LOCK (wrklock); \
		105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		106	X_UNLOCK (wrklock); \
		107	if (!aio_buf) \
		108	return -1;
		109
		110	typedef SV SV8; /* byte-sv, used for argument-checking */
49		111
50	enum {	112	enum {
51	REQ_QUIT,	113	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		118	REQ_TRUNCATE, REQ_FTRUNCATE,
		119	REQ_UTIME, REQ_FUTIME,
		120	REQ_CHMOD, REQ_FCHMOD,
		121	REQ_CHOWN, REQ_FCHOWN,
56	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	126	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	127	REQ_BUSY,
62	};	128	};
63		129
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	131	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		132
67	typedef struct aio_cb	133	typedef struct aio_cb
68	{	134	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
72		136
		137	SV *callback;
		138	SV *sv1, *sv2;
		139	void *ptr1, *ptr2;
		140	off_t offs;
		141	size_t size;
		142	ssize_t result;
		143	double nv1, nv2;
		144
		145	STRLEN stroffset;
		146	int type;
		147	int int1, int2, int3;
		148	int errorno;
		149	mode_t mode; /* open */
		150
		151	unsigned char flags;
		152	unsigned char pri;
		153
73	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
74		155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;	156	} aio_cb;
		157
		158	enum {
		159	FLAG_CANCELLED = 0x01, /* request was cancelled */
		160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
		162	};
90		163
91	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
93		166
		167	enum {
		168	PRI_MIN = -4,
		169	PRI_MAX = 4,
		170
		171	DEFAULT_PRI = 0,
		172	PRI_BIAS = -PRI_MIN,
		173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		174	};
		175
		176	#define AIO_TICKS ((1000000 + 1023) >> 10)
		177
		178	static unsigned int max_poll_time = 0;
		179	static unsigned int max_poll_reqs = 0;
		180
		181	/* calculcate time difference in ~1/AIO_TICKS of a second */
		182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		183	{
		184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		186	}
		187
		188	static thread_t main_tid;
		189	static int main_sig;
		190	static int block_sig_level;
		191
		192	void block_sig ()
		193	{
		194	sigset_t ss;
		195
		196	if (block_sig_level++)
		197	return;
		198
		199	if (!main_sig)
		200	return;
		201
		202	sigemptyset (&ss);
		203	sigaddset (&ss, main_sig);
		204	pthread_sigmask (SIG_BLOCK, &ss, 0);
		205	}
		206
		207	void unblock_sig ()
		208	{
		209	sigset_t ss;
		210
		211	if (--block_sig_level)
		212	return;
		213
		214	if (!main_sig)
		215	return;
		216
		217	sigemptyset (&ss);
		218	sigaddset (&ss, main_sig);
		219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		220	}
		221
		222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		223
94	static int started, wanted;	224	static unsigned int started, idle, wanted;
95	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];
98		225
		226	/* worker threads management */
		227	static mutex_t wrklock = X_MUTEX_INIT;
		228
		229	typedef struct worker {
		230	/* locked by wrklock */
		231	struct worker *prev, *next;
		232
		233	thread_t tid;
		234
		235	/* locked by reslock, reqlock or wrklock */
		236	aio_req req; /* currently processed request */
		237	void *dbuf;
		238	DIR *dirp;
		239	} worker;
		240
		241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		242
		243	static void worker_clear (worker *wrk)
		244	{
		245	if (wrk->dirp)
		246	{
		247	closedir (wrk->dirp);
		248	wrk->dirp = 0;
		249	}
		250
		251	if (wrk->dbuf)
		252	{
		253	free (wrk->dbuf);
		254	wrk->dbuf = 0;
		255	}
		256	}
		257
		258	static void worker_free (worker *wrk)
		259	{
		260	wrk->next->prev = wrk->prev;
		261	wrk->prev->next = wrk->next;
		262
		263	free (wrk);
		264	}
		265
		266	static volatile unsigned int nreqs, nready, npending;
		267	static volatile unsigned int max_idle = 4;
		268	static volatile unsigned int max_outstanding = 0xffffffff;
		269	static int respipe_osf [2], respipe [2] = { -1, -1 };
		270
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	271	static mutex_t reslock = X_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	272	static mutex_t reqlock = X_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	273	static cond_t reqwait = X_COND_INIT;
102		274
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	275	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		276
		277	static unsigned int get_nready ()
		278	{
		279	unsigned int retval;
		280
		281	X_LOCK (reqlock);
		282	retval = nready;
		283	X_UNLOCK (reqlock);
		284
		285	return retval;
		286	}
		287
		288	static unsigned int get_npending ()
		289	{
		290	unsigned int retval;
		291
		292	X_LOCK (reslock);
		293	retval = npending;
		294	X_UNLOCK (reslock);
		295
		296	return retval;
		297	}
		298
		299	static unsigned int get_nthreads ()
		300	{
		301	unsigned int retval;
		302
		303	X_LOCK (wrklock);
		304	retval = started;
		305	X_UNLOCK (wrklock);
		306
		307	return retval;
		308	}
		309
		310	#else
		311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
		316	#endif
		317
		318	/*
		319	* a somewhat faster data structure might be nice, but
		320	* with 8 priorities this actually needs <20 insns
		321	* per shift, the most expensive operation.
		322	*/
		323	typedef struct {
		324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		325	int size;
		326	} reqq;
		327
		328	static reqq req_queue;
		329	static reqq res_queue;
		330
		331	int reqq_push (reqq *q, aio_req req)
		332	{
		333	int pri = req->pri;
		334	req->next = 0;
		335
		336	if (q->qe[pri])
		337	{
		338	q->qe[pri]->next = req;
		339	q->qe[pri] = req;
		340	}
		341	else
		342	q->qe[pri] = q->qs[pri] = req;
		343
		344	return q->size++;
		345	}
		346
		347	aio_req reqq_shift (reqq *q)
		348	{
		349	int pri;
		350
		351	if (!q->size)
		352	return 0;
		353
		354	--q->size;
		355
		356	for (pri = NUM_PRI; pri--; )
		357	{
		358	aio_req req = q->qs[pri];
		359
		360	if (req)
		361	{
		362	if (!(q->qs[pri] = req->next))
		363	q->qe[pri] = 0;
		364
		365	return req;
		366	}
		367	}
		368
		369	abort ();
		370	}
		371
		372	static int poll_cb ();
		373	static int req_invoke (aio_req req);
		374	static void req_destroy (aio_req req);
106	static void req_free (aio_req req);	375	static void req_cancel (aio_req req);
107		376
108	/* must be called at most once */	377	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
110	{	379	{
		380	if (!req->self)
		381	{
111	req->self = (SV *)newHV ();	382	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		384	}
113		385
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	387	}
116		388
117	static aio_req SvAIO_REQ (SV *sv)	389	static aio_req SvAIO_REQ (SV *sv)
118	{	390	{
		391	MAGIC *mg;
		392
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	394	croak ("object of class " AIO_REQ_KLASS " expected");
121		395
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		397
124	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	399	}
126		400
127	static void poll_wait ()	401	static void aio_grp_feed (aio_req grp)
128	{	402	{
129	if (nreqs && !ress)	403	block_sig ();
		404
		405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
130	{	406	{
131	fd_set rfd;	407	int old_len = grp->size;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		408
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	409	if (grp->sv2 && SvOK (grp->sv2))
		410	{
		411	dSP;
		412
		413	ENTER;
		414	SAVETMPS;
		415	PUSHMARK (SP);
		416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		417	PUTBACK;
		418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		419	SPAGAIN;
		420	FREETMPS;
		421	LEAVE;
		422	}
		423
		424	/* stop if no progress has been made */
		425	if (old_len == grp->size)
		426	{
		427	SvREFCNT_dec (grp->sv2);
		428	grp->sv2 = 0;
		429	break;
		430	}
136	}	431	}
137	}
138		432
		433	unblock_sig ();
		434	}
		435
		436	static void aio_grp_dec (aio_req grp)
		437	{
		438	--grp->size;
		439
		440	/* call feeder, if applicable */
		441	aio_grp_feed (grp);
		442
		443	/* finish, if done */
		444	if (!grp->size && grp->int1)
		445	{
		446	block_sig ();
		447
		448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
		455	req_destroy (grp);
		456	unblock_sig ();
		457	}
		458	}
		459
139	static void req_invoke (aio_req req)	460	static int req_invoke (aio_req req)
140	{	461	{
141	dSP;	462	dSP;
142	int errorno = errno;
143		463
144	if (req->cancelled || !SvOK (req->callback))	464	if (req->flags & FLAG_SV2_RO_OFF)
145	return;	465	SvREADONLY_off (req->sv2);
146		466
147	errno = req->errorno;	467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	468	{
154	case REQ_READDIR:	469	ENTER;
		470	SAVETMPS;
		471	PUSHMARK (SP);
		472	EXTEND (SP, 1);
		473
		474	switch (req->type)
155	{	475	{
156	SV *rv = &PL_sv_undef;	476	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	477	{
160	char *buf = req->data2ptr;	478	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		479
163	while (req->result)	480	if (req->result >= 0)
164	{	481	{
		482	int i;
		483	char *buf = req->ptr2;
		484	AV *av = newAV ();
		485
		486	av_extend (av, req->result - 1);
		487
		488	for (i = 0; i < req->result; ++i)
		489	{
165	SV *sv = newSVpv (buf, 0);	490	SV *sv = newSVpv (buf, 0);
166		491
167	av_push (av, sv);	492	av_store (av, i, sv);
168	buf += SvCUR (sv) + 1;	493	buf += SvCUR (sv) + 1;
169	req->result--;	494	}
		495
		496	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	497	}
171		498
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	499	PUSHs (rv);
173	}	500	}
		501	break;
174		502
		503	case REQ_OPEN:
		504	{
		505	/* convert fd to fh */
		506	SV *fh;
		507
		508	PUSHs (sv_2mortal (newSViv (req->result)));
		509	PUTBACK;
		510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		511	SPAGAIN;
		512
		513	fh = POPs;
		514	PUSHMARK (SP);
175	XPUSHs (rv);	515	XPUSHs (fh);
		516	}
		517	break;
		518
		519	case REQ_GROUP:
		520	req->int1 = 2; /* mark group as finished */
		521
		522	if (req->sv1)
		523	{
		524	int i;
		525	AV *av = (AV *)req->sv1;
		526
		527	EXTEND (SP, AvFILL (av) + 1);
		528	for (i = 0; i <= AvFILL (av); ++i)
		529	PUSHs (*av_fetch (av, i, 0));
		530	}
		531	break;
		532
		533	case REQ_NOP:
		534	case REQ_BUSY:
		535	break;
		536
		537	case REQ_READLINK:
		538	if (req->result > 0)
		539	{
		540	SvCUR_set (req->sv2, req->result);
		541	*SvEND (req->sv2) = 0;
		542	PUSHs (req->sv2);
		543	}
		544	break;
		545
		546	case REQ_STAT:
		547	case REQ_LSTAT:
		548	case REQ_FSTAT:
		549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		550	PL_laststatval = req->result;
		551	PL_statcache = *(Stat_t *)(req->ptr2);
		552	PUSHs (sv_2mortal (newSViv (req->result)));
		553	break;
		554
		555	case REQ_READ:
		556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		557	*SvEND (req->sv2) = 0;
		558	PUSHs (sv_2mortal (newSViv (req->result)));
		559	break;
		560
		561	default:
		562	PUSHs (sv_2mortal (newSViv (req->result)));
		563	break;
176	}	564	}
177	break;
178		565
179	case REQ_OPEN:	566	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		567
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	568	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	569	call_sv (req->callback, G_VOID | G_EVAL);
187	SPAGAIN;	570	SPAGAIN;
188		571
189	fh = SvREFCNT_inc (POPs);	572	FREETMPS;
190		573	LEAVE;
191	PUSHMARK (SP);
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	574	}
204		575
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}
220
221	static void req_free (aio_req req)
222	{
223	if (req->grp)	576	if (req->grp)
224	{	577	{
225	aio_req grp = req->grp;	578	aio_req grp = req->grp;
226		579
227	/* unlink request */	580	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;	581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;	582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
230		583
231	if (grp->grp_next == grp && grp->fd)	584	if (grp->grp_first == req)
232	{	585	grp->grp_first = req->grp_next;
233	req_invoke (grp);	586
234	req_free (grp);	587	aio_grp_dec (grp);
235	}
236	}	588	}
237		589
		590	return !SvTRUE (ERRSV);
		591	}
		592
		593	static void req_destroy (aio_req req)
		594	{
238	if (req->self)	595	if (req->self)
239	{	596	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
242	}	599	}
243		600
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
258		604
259	if (req->type == REQ_READDIR && req->result >= 0)	605	if (req->flags & FLAG_PTR2_FREE)
260	free (req->data2ptr);	606	free (req->ptr2);
261		607
262	Safefree (req);	608	Safefree (req);
263	}	609	}
264		610
		611	static void req_cancel_subs (aio_req grp)
		612	{
		613	aio_req sub;
		614
		615	if (grp->type != REQ_GROUP)
		616	return;
		617
		618	SvREFCNT_dec (grp->sv2);
		619	grp->sv2 = 0;
		620
		621	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		622	req_cancel (sub);
		623	}
		624
265	static void req_cancel (aio_req req)	625	static void req_cancel (aio_req req)
266	{	626	{
267	req->cancelled = 1;	627	req->flags |= FLAG_CANCELLED;
268		628
269	if (req->type == REQ_GROUP)	629	req_cancel_subs (req);
		630	}
		631
		632	#ifdef USE_SOCKETS_AS_HANDLES
		633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		634	#else
		635	# define TO_SOCKET(x) (x)
		636	#endif
		637
		638	static void
		639	create_respipe ()
		640	{
		641	int old_readfd = respipe [0];
		642
		643	if (respipe [1] >= 0)
		644	respipe_close (TO_SOCKET (respipe [1]));
		645
		646	#ifdef _WIN32
		647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		648	#else
		649	if (pipe (respipe))
		650	#endif
		651	croak ("unable to initialize result pipe");
		652
		653	if (old_readfd >= 0)
270	{	654	{
271	aio_req sub;	655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		656	croak ("unable to initialize result pipe(2)");
272		657
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	658	respipe_close (respipe [0]);
274	req_cancel (sub);	659	respipe [0] = old_readfd;
		660	}
		661
		662	#ifdef _WIN32
		663	int arg = 1;
		664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		666	#else
		667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		669	#endif
		670	croak ("unable to initialize result pipe(3)");
		671
		672	respipe_osf [0] = TO_SOCKET (respipe [0]);
		673	respipe_osf [1] = TO_SOCKET (respipe [1]);
		674	}
		675
		676	X_THREAD_PROC (aio_proc);
		677
		678	static void start_thread (void)
		679	{
		680	worker *wrk = calloc (1, sizeof (worker));
		681
		682	if (!wrk)
		683	croak ("unable to allocate worker thread data");
		684
		685	X_LOCK (wrklock);
		686
		687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		688	{
		689	wrk->prev = &wrk_first;
		690	wrk->next = wrk_first.next;
		691	wrk_first.next->prev = wrk;
		692	wrk_first.next = wrk;
		693	++started;
		694	}
		695	else
		696	free (wrk);
		697
		698	X_UNLOCK (wrklock);
		699	}
		700
		701	static void maybe_start_thread ()
		702	{
		703	if (get_nthreads () >= wanted)
		704	return;
		705
		706	/* todo: maybe use idle here, but might be less exact */
		707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		708	return;
		709
		710	start_thread ();
		711	}
		712
		713	static void req_send (aio_req req)
		714	{
		715	block_sig ();
		716
		717	++nreqs;
		718
		719	X_LOCK (reqlock);
		720	++nready;
		721	reqq_push (&req_queue, req);
		722	X_COND_SIGNAL (reqwait);
		723	X_UNLOCK (reqlock);
		724
		725	unblock_sig ();
		726
		727	maybe_start_thread ();
		728	}
		729
		730	static void end_thread (void)
		731	{
		732	aio_req req;
		733
		734	Newz (0, req, 1, aio_cb);
		735
		736	req->type = REQ_QUIT;
		737	req->pri = PRI_MAX + PRI_BIAS;
		738
		739	X_LOCK (reqlock);
		740	reqq_push (&req_queue, req);
		741	X_COND_SIGNAL (reqwait);
		742	X_UNLOCK (reqlock);
		743
		744	X_LOCK (wrklock);
		745	--started;
		746	X_UNLOCK (wrklock);
		747	}
		748
		749	static void set_max_idle (int nthreads)
		750	{
		751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		752	max_idle = nthreads <= 0 ? 1 : nthreads;
		753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		754	}
		755
		756	static void min_parallel (int nthreads)
		757	{
		758	if (wanted < nthreads)
		759	wanted = nthreads;
		760	}
		761
		762	static void max_parallel (int nthreads)
		763	{
		764	if (wanted > nthreads)
		765	wanted = nthreads;
		766
		767	while (started > wanted)
		768	end_thread ();
		769	}
		770
		771	static void poll_wait ()
		772	{
		773	fd_set rfd;
		774
		775	while (nreqs)
		776	{
		777	int size;
		778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		779	size = res_queue.size;
		780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		781
		782	if (size)
		783	return;
		784
		785	maybe_start_thread ();
		786
		787	FD_ZERO (&rfd);
		788	FD_SET (respipe [0], &rfd);
		789
		790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
275	}	791	}
276	}	792	}
277		793
278	static int poll_cb ()	794	static int poll_cb ()
279	{	795	{
280	dSP;	796	dSP;
281	int count = 0;	797	int count = 0;
		798	int maxreqs = max_poll_reqs;
282	int do_croak = 0;	799	int do_croak = 0;
		800	struct timeval tv_start, tv_now;
283	aio_req req;	801	aio_req req;
		802
		803	if (max_poll_time)
		804	gettimeofday (&tv_start, 0);
		805
		806	block_sig ();
284		807
285	for (;;)	808	for (;;)
286	{	809	{
287	pthread_mutex_lock (&reslock);	810	for (;;)
288	req = ress;
289
290	if (req)
291	{	811	{
292	ress = req->next;	812	maybe_start_thread ();
293		813
		814	X_LOCK (reslock);
		815	req = reqq_shift (&res_queue);
		816
294	if (!ress)	817	if (req)
295	{	818	{
		819	--npending;
		820
		821	if (!res_queue.size)
		822	{
296	/* read any signals sent by the worker threads */	823	/* read any signals sent by the worker threads */
297	char buf [32];	824	char buf [4];
298	while (read (respipe [0], buf, 32) == 32)	825	while (respipe_read (respipe [0], buf, 4) == 4)
		826	;
299	;	827	}
		828	}
300		829
		830	X_UNLOCK (reslock);
		831
		832	if (!req)
		833	break;
		834
		835	--nreqs;
		836
		837	if (req->type == REQ_GROUP && req->size)
		838	{
		839	req->int1 = 1; /* mark request as delayed */
		840	continue;
		841	}
		842	else
		843	{
		844	if (!req_invoke (req))
		845	{
		846	req_destroy (req);
		847	unblock_sig ();
		848	croak (0);
		849	}
		850
		851	count++;
		852	}
		853
		854	req_destroy (req);
		855
		856	if (maxreqs && !--maxreqs)
		857	break;
		858
		859	if (max_poll_time)
		860	{
		861	gettimeofday (&tv_now, 0);
		862
		863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
301	rese = 0;	864	break;
302	}	865	}
303	}	866	}
304		867
305	pthread_mutex_unlock (&reslock);	868	if (nreqs <= max_outstanding)
306
307	if (!req)
308	break;	869	break;
309		870
310	nreqs--;	871	poll_wait ();
311		872
312	if (req->type == REQ_QUIT)	873	++maxreqs;
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{
316	req->fd = 1; /* mark request as delayed */
317	continue;
318	}
319	else
320	{
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	874	}
341		875
		876	unblock_sig ();
342	return count;	877	return count;
343	}
344
345	static void *aio_proc(void *arg);
346
347	static void start_thread (void)
348	{
349	sigset_t fullsigset, oldsigset;
350	pthread_t tid;
351	pthread_attr_t attr;
352
353	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357	sigfillset (&fullsigset);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361	started++;
362
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
364	}
365
366	static void req_send (aio_req req)
367	{
368	while (started < wanted && nreqs >= started)
369	start_thread ();
370
371	nreqs++;
372
373	pthread_mutex_lock (&reqlock);
374
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}
399
400	static void end_thread (void)
401	{
402	aio_req req;
403	Newz (0, req, 1, aio_cb);
404	req->type = REQ_QUIT;
405
406	req_send (req);
407	}
408
409	static void min_parallel (int nthreads)
410	{
411	if (wanted < nthreads)
412	wanted = nthreads;
413	}
414
415	static void max_parallel (int nthreads)
416	{
417	int cur = started;
418
419	if (wanted > nthreads)
420	wanted = nthreads;
421
422	while (cur > wanted)
423	{
424	end_thread ();
425	cur--;
426	}
427
428	while (started > wanted)
429	{
430	poll_wait ();
431	poll_cb ();
432	}
433	}
434
435	static void create_pipe ()
436	{
437	if (pipe (respipe))
438	croak ("unable to initialize result pipe");
439
440	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
441	croak ("cannot set result pipe to nonblocking mode");
442
443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
444	croak ("cannot set result pipe to nonblocking mode");
445	}	878	}
446		879
447	/*****************************************************************************/	880	/*****************************************************************************/
448	/* work around various missing functions */	881	/* work around various missing functions */
449		882
…		…
454	/*	887	/*
455	* make our pread/pwrite safe against themselves, but not against	888	* make our pread/pwrite safe against themselves, but not against
456	* normal read/write by using a mutex. slows down execution a lot,	889	* normal read/write by using a mutex. slows down execution a lot,
457	* but that's your problem, not mine.	890	* but that's your problem, not mine.
458	*/	891	*/
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	892	static mutex_t preadwritelock = X_MUTEX_INIT;
460		893
461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
462	{	895	{
463	ssize_t res;	896	ssize_t res;
464	off_t ooffset;	897	off_t ooffset;
465		898
466	pthread_mutex_lock (&preadwritelock);	899	X_LOCK (preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);	900	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);	901	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);	902	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);	903	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);	904	X_UNLOCK (preadwritelock);
472		905
473	return res;	906	return res;
474	}	907	}
475		908
476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
477	{	910	{
478	ssize_t res;	911	ssize_t res;
479	off_t ooffset;	912	off_t ooffset;
480		913
481	pthread_mutex_lock (&preadwritelock);	914	X_LOCK (preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);	915	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);	916	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);	917	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);	918	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);	919	X_UNLOCK (preadwritelock);
487		920
488	return res;	921	return res;
489	}	922	}
		923	#endif
		924
		925	#ifndef HAVE_FUTIMES
		926
		927	# define utimes(path,times) aio_utimes (path, times)
		928	# define futimes(fd,times) aio_futimes (fd, times)
		929
		930	int aio_utimes (const char *filename, const struct timeval times[2])
		931	{
		932	if (times)
		933	{
		934	struct utimbuf buf;
		935
		936	buf.actime = times[0].tv_sec;
		937	buf.modtime = times[1].tv_sec;
		938
		939	return utime (filename, &buf);
		940	}
		941	else
		942	return utime (filename, 0);
		943	}
		944
		945	int aio_futimes (int fd, const struct timeval tv[2])
		946	{
		947	errno = ENOSYS;
		948	return -1;
		949	}
		950
490	#endif	951	#endif
491		952
492	#if !HAVE_FDATASYNC	953	#if !HAVE_FDATASYNC
493	# define fdatasync fsync	954	# define fdatasync fsync
494	#endif	955	#endif
495		956
496	#if !HAVE_READAHEAD	957	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
498		959
499	static ssize_t readahead (int fd, off_t offset, size_t count)	960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
500	{	961	{
501	char readahead_buf[4096];	962	size_t todo = count;
		963	dBUF;
502		964
503	while (count > 0)	965	while (todo > 0)
504	{	966	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
506		968
507	pread (fd, readahead_buf, len, offset);	969	pread (fd, aio_buf, len, offset);
508	offset += len;	970	offset += len;
509	count -= len;	971	todo -= len;
510	}	972	}
511		973
512	errno = 0;	974	errno = 0;
		975	return count;
513	}	976	}
		977
514	#endif	978	#endif
515		979
516	#if !HAVE_READDIR_R	980	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r	981	# define readdir_r aio_readdir_r
518		982
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	983	static mutex_t readdirlock = X_MUTEX_INIT;
520		984
521	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
522	{	986	{
523	struct dirent *e;	987	X_DIRENT *e;
524	int errorno;	988	int errorno;
525		989
526	pthread_mutex_lock (&readdirlock);	990	X_LOCK (readdirlock);
527		991
528	e = readdir (dirp);	992	e = readdir (dirp);
529	errorno = errno;	993	errorno = errno;
530		994
531	if (e)	995	if (e)
…		…
534	strcpy (ent->d_name, e->d_name);	998	strcpy (ent->d_name, e->d_name);
535	}	999	}
536	else	1000	else
537	*res = 0;	1001	*res = 0;
538		1002
539	pthread_mutex_unlock (&readdirlock);	1003	X_UNLOCK (readdirlock);
540		1004
541	errno = errorno;	1005	errno = errorno;
542	return e ? 0 : -1;	1006	return e ? 0 : -1;
543	}	1007	}
544	#endif	1008	#endif
545		1009
546	/* sendfile always needs emulation */	1010	/* sendfile always needs emulation */
547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
548	{	1012	{
549	ssize_t res;	1013	ssize_t res;
550		1014
551	if (!count)	1015	if (!count)
552	return 0;	1016	return 0;
…		…
563	{	1027	{
564	off_t sbytes;	1028	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566		1030
567	if (res < 0 && sbytes)	1031	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
569	res = sbytes;	1033	res = sbytes;
570	}	1034	}
571		1035
572	# elif __hpux	1036	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);	1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
601	#endif	1065	#endif
602	)	1066	)
603	)	1067	)
604	{	1068	{
605	/* emulate sendfile. this is a major pain in the ass */	1069	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	1070	dBUF;
		1071
607	res = 0;	1072	res = 0;
608		1073
609	while (count)	1074	while (count)
610	{	1075	{
611	ssize_t cnt;	1076	ssize_t cnt;
612		1077
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		1079
615	if (cnt <= 0)	1080	if (cnt <= 0)
616	{	1081	{
617	if (cnt && !res) res = -1;	1082	if (cnt && !res) res = -1;
618	break;	1083	break;
619	}	1084	}
620		1085
621	cnt = write (ofd, buf, cnt);	1086	cnt = write (ofd, aio_buf, cnt);
622		1087
623	if (cnt <= 0)	1088	if (cnt <= 0)
624	{	1089	{
625	if (cnt && !res) res = -1;	1090	if (cnt && !res) res = -1;
626	break;	1091	break;
…		…
634		1099
635	return res;	1100	return res;
636	}	1101	}
637		1102
638	/* read a full directory */	1103	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)	1104	static void scandir_ (aio_req req, worker *self)
640	{	1105	{
641	DIR *dirp = opendir (path);	1106	DIR *dirp;
642	union	1107	union
643	{	1108	{
644	struct dirent d;	1109	X_DIRENT d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
646	} u;	1111	} *u;
647	struct dirent *entp;	1112	X_DIRENT *entp;
648	char *name, *names;	1113	char *name, *names;
649	int memlen = 4096;	1114	int memlen = 4096;
650	int memofs = 0;	1115	int memofs = 0;
651	int res = 0;	1116	int res = 0;
652	int errorno;
653		1117
654	if (!dirp)	1118	X_LOCK (wrklock);
655	return -1;	1119	self->dirp = dirp = opendir (req->ptr1);
656		1120	self->dbuf = u = malloc (sizeof (*u));
		1121	req->flags |= FLAG_PTR2_FREE;
657	names = malloc (memlen);	1122	req->ptr2 = names = malloc (memlen);
		1123	X_UNLOCK (wrklock);
		1124
		1125	if (dirp && u && names)
		1126	for (;;)
		1127	{
		1128	errno = 0;
		1129	readdir_r (dirp, &u->d, &entp);
		1130
		1131	if (!entp)
		1132	break;
		1133
		1134	name = entp->d_name;
		1135
		1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1137	{
		1138	int len = strlen (name) + 1;
		1139
		1140	res++;
		1141
		1142	while (memofs + len > memlen)
		1143	{
		1144	memlen *= 2;
		1145	X_LOCK (wrklock);
		1146	req->ptr2 = names = realloc (names, memlen);
		1147	X_UNLOCK (wrklock);
		1148
		1149	if (!names)
		1150	break;
		1151	}
		1152
		1153	memcpy (names + memofs, name, len);
		1154	memofs += len;
		1155	}
		1156	}
		1157
		1158	if (errno)
		1159	res = -1;
		1160
		1161	req->result = res;
		1162	}
		1163
		1164	/*****************************************************************************/
		1165
		1166	X_THREAD_PROC (aio_proc)
		1167	{
		1168	{//D
		1169	aio_req req;
		1170	struct timespec ts;
		1171	worker *self = (worker *)thr_arg;
		1172
		1173	/* try to distribute timeouts somewhat randomly */
		1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
658		1175
659	for (;;)	1176	for (;;)
660	{	1177	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);	1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
662		1179
663	if (!entp)	1180	X_LOCK (reqlock);
664	break;
665
666	name = entp->d_name;
667
668	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669	{
670	int len = strlen (name) + 1;
671
672	res++;
673
674	while (memofs + len > memlen)
675	{
676	memlen *= 2;
677	names = realloc (names, memlen);
678	if (!names)
679	break;
680	}
681
682	memcpy (names + memofs, name, len);
683	memofs += len;
684	}
685	}
686
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;
695	}
696
697	*namesp = (void *)names;
698	return res;
699	}
700
701	/*****************************************************************************/
702
703	static void *aio_proc (void *thr_arg)
704	{
705	aio_req req;
706	int type;
707
708	do
709	{
710	pthread_mutex_lock (&reqlock);
711		1181
712	for (;;)	1182	for (;;)
713	{	1183	{
714	req = reqs;	1184	self->req = req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		1185
722	if (req)	1186	if (req)
723	break;	1187	break;
724		1188
725	pthread_cond_wait (&reqwait, &reqlock);	1189	++idle;
		1190
		1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1192	== ETIMEDOUT)
		1193	{
		1194	if (idle > max_idle)
		1195	{
		1196	--idle;
		1197	X_UNLOCK (reqlock);
		1198	X_LOCK (wrklock);
		1199	--started;
		1200	X_UNLOCK (wrklock);
		1201	goto quit;
		1202	}
		1203
		1204	/* we are allowed to idle, so do so without any timeout */
		1205	X_COND_WAIT (reqwait, reqlock);
		1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1207	}
		1208
		1209	--idle;
726	}	1210	}
727		1211
728	pthread_mutex_unlock (&reqlock);	1212	--nready;
		1213
		1214	X_UNLOCK (reqlock);
729		1215
730	errno = 0; /* strictly unnecessary */	1216	errno = 0; /* strictly unnecessary */
731		1217
732	if (!req->cancelled)	1218	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	1219	switch (req->type)
734	{	1220	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1221	case REQ_READ: req->result = req->offs >= 0
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1222	? pread (req->int1, req->ptr1, req->size, req->offs)
		1223	: read (req->int1, req->ptr1, req->size); break;
		1224	case REQ_WRITE: req->result = req->offs >= 0
		1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1226	: write (req->int1, req->ptr1, req->size); break;
737		1227
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
740		1230
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
744		1234
		1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1241
745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
746	case REQ_CLOSE: req->result = close (req->fd); break;	1243	case REQ_CLOSE: req->result = close (req->int1); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
752		1252
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1255	case REQ_READDIR: scandir_ (req, self); break;
756		1256
757	case REQ_SLEEP:	1257	case REQ_BUSY:
		1258	#ifdef _WIN32
		1259	Sleep (req->nv1 * 1000.);
		1260	#else
758	{	1261	{
759	struct timeval tv;	1262	struct timeval tv;
760		1263
761	tv.tv_sec = req->fd;	1264	tv.tv_sec = req->nv1;
762	tv.tv_usec = req->fd2;	1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
763		1266
764	req->result = select (0, 0, 0, 0, &tv);	1267	req->result = select (0, 0, 0, 0, &tv);
765	}	1268	}
		1269	#endif
		1270	break;
		1271
		1272	case REQ_UTIME:
		1273	case REQ_FUTIME:
		1274	{
		1275	struct timeval tv[2];
		1276	struct timeval *times;
		1277
		1278	if (req->nv1 != -1. || req->nv2 != -1.)
		1279	{
		1280	tv[0].tv_sec = req->nv1;
		1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1282	tv[1].tv_sec = req->nv2;
		1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1284
		1285	times = tv;
		1286	}
		1287	else
		1288	times = 0;
		1289
		1290
		1291	req->result = req->type == REQ_FUTIME
		1292	? futimes (req->int1, times)
		1293	: utimes (req->ptr1, times);
		1294	}
		1295
		1296	case REQ_GROUP:
		1297	case REQ_NOP:
		1298	break;
766		1299
767	case REQ_QUIT:	1300	case REQ_QUIT:
768	break;	1301	goto quit;
769		1302
770	default:	1303	default:
771	req->result = ENOSYS;	1304	req->result = -1;
772	break;	1305	break;
773	}	1306	}
774		1307
775	req->errorno = errno;	1308	req->errorno = errno;
776		1309
777	pthread_mutex_lock (&reslock);	1310	X_LOCK (reslock);
778		1311
779	req->next = 0;	1312	++npending;
780		1313
781	if (rese)	1314	if (!reqq_push (&res_queue, req))
782	{	1315	{
783	rese->next = req;	1316	/* write a dummy byte to the pipe so fh becomes ready */
784	rese = req;	1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1318
		1319	/* optionally signal the main thread asynchronously */
		1320	if (main_sig)
		1321	pthread_kill (main_tid, main_sig);
785	}	1322	}
786	else
787	{
788	rese = ress = req;
789		1323
790	/* write a dummy byte to the pipe so fh becomes ready */	1324	self->req = 0;
791	write (respipe [1], &respipe, 1);	1325	worker_clear (self);
792	}
793		1326
794	pthread_mutex_unlock (&reslock);	1327	X_UNLOCK (reslock);
795	}	1328	}
796	while (type != REQ_QUIT);	1329
		1330	quit:
		1331	X_LOCK (wrklock);
		1332	worker_free (self);
		1333	X_UNLOCK (wrklock);
797		1334
798	return 0;	1335	return 0;
		1336	}//D
799	}	1337	}
800		1338
801	/*****************************************************************************/	1339	/*****************************************************************************/
802		1340
803	static void atfork_prepare (void)	1341	static void atfork_prepare (void)
804	{	1342	{
805	pthread_mutex_lock (&reqlock);	1343	X_LOCK (wrklock);
806	pthread_mutex_lock (&reslock);	1344	X_LOCK (reqlock);
		1345	X_LOCK (reslock);
807	#if !HAVE_PREADWRITE	1346	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);	1347	X_LOCK (preadwritelock);
809	#endif	1348	#endif
810	#if !HAVE_READDIR_R	1349	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);	1350	X_LOCK (readdirlock);
812	#endif	1351	#endif
813	}	1352	}
814		1353
815	static void atfork_parent (void)	1354	static void atfork_parent (void)
816	{	1355	{
817	#if !HAVE_READDIR_R	1356	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);	1357	X_UNLOCK (readdirlock);
819	#endif	1358	#endif
820	#if !HAVE_PREADWRITE	1359	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);	1360	X_UNLOCK (preadwritelock);
822	#endif	1361	#endif
823	pthread_mutex_unlock (&reslock);	1362	X_UNLOCK (reslock);
824	pthread_mutex_unlock (&reqlock);	1363	X_UNLOCK (reqlock);
		1364	X_UNLOCK (wrklock);
825	}	1365	}
826		1366
827	static void atfork_child (void)	1367	static void atfork_child (void)
828	{	1368	{
829	aio_req prv;	1369	aio_req prv;
830		1370
831	started = 0;	1371	while (prv = reqq_shift (&req_queue))
		1372	req_destroy (prv);
832		1373
833	while (reqs)	1374	while (prv = reqq_shift (&res_queue))
		1375	req_destroy (prv);
		1376
		1377	while (wrk_first.next != &wrk_first)
834	{	1378	{
835	prv = reqs;	1379	worker *wrk = wrk_first.next;
836	reqs = prv->next;	1380
		1381	if (wrk->req)
		1382	req_destroy (wrk->req);
		1383
		1384	worker_clear (wrk);
837	req_free (prv);	1385	worker_free (wrk);
838	}	1386	}
839		1387
840	reqs = reqe = 0;	1388	started = 0;
841		1389	idle = 0;
842	while (ress)	1390	nreqs = 0;
843	{	1391	nready = 0;
844	prv = ress;	1392	npending = 0;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850		1393
851	close (respipe [0]);
852	close (respipe [1]);
853	create_pipe ();	1394	create_respipe ();
854		1395
855	atfork_parent ();	1396	atfork_parent ();
856	}	1397	}
857		1398
858	#define dREQ \	1399	#define dREQ \
859	aio_req req; \	1400	aio_req req; \
		1401	int req_pri = next_pri; \
		1402	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	1403	\
861	if (SvOK (callback) && !SvROK (callback)) \	1404	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	1405	croak ("callback must be undef or of reference type"); \
863	\	1406	\
864	Newz (0, req, 1, aio_cb); \	1407	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1408	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1409	croak ("out of memory during aio_req allocation"); \
867	\	1410	\
868	req->callback = newSVsv (callback)	1411	req->callback = newSVsv (callback); \
		1412	req->pri = req_pri
869		1413
870	#define REQ_SEND \	1414	#define REQ_SEND \
871	req_send (req); \	1415	req_send (req); \
872	\	1416	\
873	if (GIMME_V != G_VOID) \	1417	if (GIMME_V != G_VOID) \
…		…
878	PROTOTYPES: ENABLE	1422	PROTOTYPES: ENABLE
879		1423
880	BOOT:	1424	BOOT:
881	{	1425	{
882	HV *stash = gv_stashpv ("IO::AIO", 1);	1426	HV *stash = gv_stashpv ("IO::AIO", 1);
		1427
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1433	#ifdef _WIN32
		1434	X_MUTEX_CHECK (wrklock);
		1435	X_MUTEX_CHECK (reslock);
		1436	X_MUTEX_CHECK (reqlock);
		1437	X_MUTEX_CHECK (reqwait);
		1438	X_MUTEX_CHECK (preadwritelock);
		1439	X_MUTEX_CHECK (readdirlock);
886		1440
887	create_pipe ();	1441	X_COND_CHECK (reqwait);
		1442	#else
		1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1445	#endif
		1446
		1447	create_respipe ();
		1448
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
889	}	1450	}
890		1451
891	void	1452	void
892	min_parallel (nthreads)	1453	max_poll_reqs (int nreqs)
893	int nthreads
894	PROTOTYPE: $	1454	PROTOTYPE: $
		1455	CODE:
		1456	max_poll_reqs = nreqs;
895		1457
896	void	1458	void
897	max_parallel (nthreads)	1459	max_poll_time (double nseconds)
898	int nthreads
899	PROTOTYPE: $	1460	PROTOTYPE: $
		1461	CODE:
		1462	max_poll_time = nseconds * AIO_TICKS;
		1463
		1464	void
		1465	min_parallel (int nthreads)
		1466	PROTOTYPE: $
		1467
		1468	void
		1469	max_parallel (int nthreads)
		1470	PROTOTYPE: $
		1471
		1472	void
		1473	max_idle (int nthreads)
		1474	PROTOTYPE: $
		1475	CODE:
		1476	set_max_idle (nthreads);
900		1477
901	int	1478	int
902	max_outstanding (nreqs)	1479	max_outstanding (int maxreqs)
903	int nreqs	1480	PROTOTYPE: $
904	PROTOTYPE: $
905	CODE:	1481	CODE:
906	RETVAL = max_outstanding;	1482	RETVAL = max_outstanding;
907	max_outstanding = nreqs;	1483	max_outstanding = maxreqs;
		1484	OUTPUT:
		1485	RETVAL
908		1486
909	void	1487	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
911	SV * pathname
912	int flags
913	int mode
914	SV * callback
915	PROTOTYPE: $$$;$	1489	PROTOTYPE: $$$;$
916	PPCODE:	1490	PPCODE:
917	{	1491	{
918	dREQ;	1492	dREQ;
919		1493
920	req->type = REQ_OPEN;	1494	req->type = REQ_OPEN;
921	req->data = newSVsv (pathname);	1495	req->sv1 = newSVsv (pathname);
922	req->dataptr = SvPVbyte_nolen (req->data);	1496	req->ptr1 = SvPVbyte_nolen (req->sv1);
923	req->fd = flags;	1497	req->int1 = flags;
924	req->mode = mode;	1498	req->mode = mode;
925		1499
926	REQ_SEND;	1500	REQ_SEND;
927	}	1501	}
928		1502
929	void	1503	void
930	aio_close (fh,callback=&PL_sv_undef)	1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$	1505	PROTOTYPE: $;$
934	ALIAS:	1506	ALIAS:
935	aio_close = REQ_CLOSE	1507	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC	1508	aio_fsync = REQ_FSYNC
937	aio_fdatasync = REQ_FDATASYNC	1509	aio_fdatasync = REQ_FDATASYNC
938	PPCODE:	1510	PPCODE:
939	{	1511	{
940	dREQ;	1512	dREQ;
941		1513
942	req->type = ix;	1514	req->type = ix;
943	req->fh = newSVsv (fh);	1515	req->sv1 = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
945		1517
946	REQ_SEND (req);	1518	REQ_SEND (req);
947	}	1519	}
948		1520
949	void	1521	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
951	SV * fh
952	UV offset
953	UV length
954	SV * data
955	UV dataoffset
956	SV * callback
957	ALIAS:	1523	ALIAS:
958	aio_read = REQ_READ	1524	aio_read = REQ_READ
959	aio_write = REQ_WRITE	1525	aio_write = REQ_WRITE
960	PROTOTYPE: $$$$$;$	1526	PROTOTYPE: $$$$$;$
961	PPCODE:	1527	PPCODE:
962	{	1528	{
963	aio_req req;
964	STRLEN svlen;	1529	STRLEN svlen;
965	char *svptr = SvPVbyte (data, svlen);	1530	char *svptr = SvPVbyte (data, svlen);
		1531	UV len = SvUV (length);
966		1532
967	SvUPGRADE (data, SVt_PV);	1533	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);	1534	SvPOK_on (data);
969		1535
970	if (dataoffset < 0)	1536	if (dataoffset < 0)
971	dataoffset += svlen;	1537	dataoffset += svlen;
972		1538
973	if (dataoffset < 0 || dataoffset > svlen)	1539	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	1540	croak ("dataoffset outside of data scalar");
975		1541
976	if (ix == REQ_WRITE)	1542	if (ix == REQ_WRITE)
977	{	1543	{
978	/* write: check length and adjust. */	1544	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	1545	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	1546	len = svlen - dataoffset;
981	}	1547	}
982	else	1548	else
983	{	1549	{
984	/* read: grow scalar as necessary */	1550	/* read: grow scalar as necessary */
985	svptr = SvGROW (data, length + dataoffset);	1551	svptr = SvGROW (data, len + dataoffset + 1);
986	}	1552	}
987		1553
988	if (length < 0)	1554	if (len < 0)
989	croak ("length must not be negative");	1555	croak ("length must not be negative");
990		1556
991	{	1557	{
992	dREQ;	1558	dREQ;
993		1559
994	req->type = ix;	1560	req->type = ix;
995	req->fh = newSVsv (fh);	1561	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
997	: IoOFP (sv_2io (fh)));	1563	: IoOFP (sv_2io (fh)));
		1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	1565	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	1566	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	1567	req->ptr1 = (char *)svptr + dataoffset;
		1568	req->stroffset = dataoffset;
1002		1569
1003	if (!SvREADONLY (data))	1570	if (!SvREADONLY (data))
1004	{	1571	{
1005	SvREADONLY_on (data);	1572	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	1573	req->flags |= FLAG_SV2_RO_OFF;
1007	}	1574	}
1008		1575
1009	REQ_SEND;	1576	REQ_SEND;
1010	}	1577	}
1011	}	1578	}
1012		1579
1013	void	1580	void
		1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1582	PROTOTYPE: $$;$
		1583	PPCODE:
		1584	{
		1585	SV *data;
		1586	dREQ;
		1587
		1588	data = newSV (NAME_MAX);
		1589	SvPOK_on (data);
		1590
		1591	req->type = REQ_READLINK;
		1592	req->sv1 = newSVsv (path);
		1593	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1594	req->sv2 = data;
		1595	req->ptr1 = SvPVbyte_nolen (data);
		1596
		1597	REQ_SEND;
		1598	}
		1599
		1600	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1015	SV * out_fh
1016	SV * in_fh
1017	UV in_offset
1018	UV length
1019	SV * callback
1020	PROTOTYPE: $$$$;$	1602	PROTOTYPE: $$$$;$
1021	PPCODE:	1603	PPCODE:
1022	{	1604	{
1023	dREQ;	1605	dREQ;
1024		1606
1025	req->type = REQ_SENDFILE;	1607	req->type = REQ_SENDFILE;
1026	req->fh = newSVsv (out_fh);	1608	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1028	req->fh2 = newSVsv (in_fh);	1610	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1030	req->offset = in_offset;	1612	req->offs = SvVAL64 (in_offset);
1031	req->length = length;	1613	req->size = length;
1032		1614
1033	REQ_SEND;	1615	REQ_SEND;
1034	}	1616	}
1035		1617
1036	void	1618	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$	1620	PROTOTYPE: $$$;$
1043	PPCODE:	1621	PPCODE:
1044	{	1622	{
1045	dREQ;	1623	dREQ;
1046		1624
1047	req->type = REQ_READAHEAD;	1625	req->type = REQ_READAHEAD;
1048	req->fh = newSVsv (fh);	1626	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1050	req->offset = offset;	1628	req->offs = SvVAL64 (offset);
1051	req->length = length;	1629	req->size = length;
1052		1630
1053	REQ_SEND;	1631	REQ_SEND;
1054	}	1632	}
1055		1633
1056	void	1634	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	1636	ALIAS:
1061	aio_stat = REQ_STAT	1637	aio_stat = REQ_STAT
1062	aio_lstat = REQ_LSTAT	1638	aio_lstat = REQ_LSTAT
1063	PPCODE:	1639	PPCODE:
1064	{	1640	{
1065	dREQ;	1641	dREQ;
1066		1642
1067	New (0, req->statdata, 1, Stat_t);	1643	req->ptr2 = malloc (sizeof (Stat_t));
1068	if (!req->statdata)	1644	if (!req->ptr2)
1069	{	1645	{
1070	req_free (req);	1646	req_destroy (req);
1071	croak ("out of memory during aio_req->statdata allocation");	1647	croak ("out of memory during aio_stat statdata allocation");
1072	}	1648	}
		1649
		1650	req->flags |= FLAG_PTR2_FREE;
		1651	req->sv1 = newSVsv (fh_or_path);
1073		1652
1074	if (SvPOK (fh_or_path))	1653	if (SvPOK (fh_or_path))
1075	{	1654	{
1076	req->type = ix;	1655	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);	1656	req->ptr1 = SvPVbyte_nolen (req->sv1);
1079	}	1657	}
1080	else	1658	else
1081	{	1659	{
1082	req->type = REQ_FSTAT;	1660	req->type = REQ_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}	1662	}
1086		1663
1087	REQ_SEND;	1664	REQ_SEND;
1088	}	1665	}
1089		1666
1090	void	1667	void
		1668	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1669	PPCODE:
		1670	{
		1671	dREQ;
		1672
		1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1675	req->sv1 = newSVsv (fh_or_path);
		1676
		1677	if (SvPOK (fh_or_path))
		1678	{
		1679	req->type = REQ_UTIME;
		1680	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1681	}
		1682	else
		1683	{
		1684	req->type = REQ_FUTIME;
		1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1686	}
		1687
		1688	REQ_SEND;
		1689	}
		1690
		1691	void
		1692	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1693	PPCODE:
		1694	{
		1695	dREQ;
		1696
		1697	req->sv1 = newSVsv (fh_or_path);
		1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1699
		1700	if (SvPOK (fh_or_path))
		1701	{
		1702	req->type = REQ_TRUNCATE;
		1703	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1704	}
		1705	else
		1706	{
		1707	req->type = REQ_FTRUNCATE;
		1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1709	}
		1710
		1711	REQ_SEND;
		1712	}
		1713
		1714	void
		1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1716	PPCODE:
		1717	{
		1718	dREQ;
		1719
		1720	req->mode = mode;
		1721	req->sv1 = newSVsv (fh_or_path);
		1722
		1723	if (SvPOK (fh_or_path))
		1724	{
		1725	req->type = REQ_CHMOD;
		1726	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1727	}
		1728	else
		1729	{
		1730	req->type = REQ_FCHMOD;
		1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1732	}
		1733
		1734	REQ_SEND;
		1735	}
		1736
		1737	void
		1738	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1739	PPCODE:
		1740	{
		1741	dREQ;
		1742
		1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1745	req->sv1 = newSVsv (fh_or_path);
		1746
		1747	if (SvPOK (fh_or_path))
		1748	{
		1749	req->type = REQ_CHOWN;
		1750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1751	}
		1752	else
		1753	{
		1754	req->type = REQ_FCHOWN;
		1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1756	}
		1757
		1758	REQ_SEND;
		1759	}
		1760
		1761	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	1763	ALIAS:
1095	aio_unlink = REQ_UNLINK	1764	aio_unlink = REQ_UNLINK
1096	aio_rmdir = REQ_RMDIR	1765	aio_rmdir = REQ_RMDIR
1097	aio_readdir = REQ_READDIR	1766	aio_readdir = REQ_READDIR
1098	PPCODE:	1767	PPCODE:
1099	{	1768	{
1100	dREQ;	1769	dREQ;
1101		1770
1102	req->type = ix;	1771	req->type = ix;
1103	req->data = newSVsv (pathname);	1772	req->sv1 = newSVsv (pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	1773	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1774
		1775	REQ_SEND;
		1776	}
		1777
		1778	void
		1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1780	PPCODE:
		1781	{
		1782	dREQ;
1105		1783
		1784	req->type = REQ_MKDIR;
		1785	req->sv1 = newSVsv (pathname);
		1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1787	req->mode = mode;
		1788
1106	REQ_SEND;	1789	REQ_SEND;
1107	}	1790	}
1108		1791
1109	void	1792	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:	1794	ALIAS:
1115	aio_link = REQ_LINK	1795	aio_link = REQ_LINK
1116	aio_symlink = REQ_SYMLINK	1796	aio_symlink = REQ_SYMLINK
1117	aio_rename = REQ_RENAME	1797	aio_rename = REQ_RENAME
1118	PPCODE:	1798	PPCODE:
1119	{	1799	{
1120	dREQ;	1800	dREQ;
1121		1801
1122	req->type = ix;	1802	req->type = ix;
1123	req->fh = newSVsv (oldpath);	1803	req->sv2 = newSVsv (oldpath);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	1804	req->ptr2 = SvPVbyte_nolen (req->sv2);
1125	req->data = newSVsv (newpath);	1805	req->sv1 = newSVsv (newpath);
1126	req->dataptr = SvPVbyte_nolen (req->data);	1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1127		1807
1128	REQ_SEND;	1808	REQ_SEND;
1129	}	1809	}
1130		1810
1131	void	1811	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1813	PPCODE:
1136	{	1814	{
1137	dREQ;	1815	dREQ;
1138		1816
1139	req->type = REQ_SLEEP;	1817	req->type = REQ_MKNOD;
1140	req->fd = delay < 0. ? 0 : delay;	1818	req->sv1 = newSVsv (pathname);
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1819	req->ptr1 = SvPVbyte_nolen (req->sv1);
1142		1820	req->mode = (mode_t)mode;
		1821	req->offs = dev;
		1822
1143	REQ_SEND;	1823	REQ_SEND;
1144	}	1824	}
1145		1825
1146	void	1826	void
		1827	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1828	PPCODE:
		1829	{
		1830	dREQ;
		1831
		1832	req->type = REQ_BUSY;
		1833	req->nv1 = delay < 0. ? 0. : delay;
		1834
		1835	REQ_SEND;
		1836	}
		1837
		1838	void
1147	aio_group (callback=&PL_sv_undef)	1839	aio_group (SV *callback=&PL_sv_undef)
1148	SV * callback
1149	PROTOTYPE: ;$	1840	PROTOTYPE: ;$
1150	PPCODE:	1841	PPCODE:
1151	{	1842	{
1152	dREQ;	1843	dREQ;
		1844
1153	req->type = REQ_GROUP;	1845	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1846
1157	req_send (req);	1847	req_send (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	1849	}
		1850
		1851	void
		1852	aio_nop (SV *callback=&PL_sv_undef)
		1853	PPCODE:
		1854	{
		1855	dREQ;
		1856
		1857	req->type = REQ_NOP;
		1858
		1859	REQ_SEND;
		1860	}
		1861
		1862	int
		1863	aioreq_pri (int pri = 0)
		1864	PROTOTYPE: ;$
		1865	CODE:
		1866	RETVAL = next_pri - PRI_BIAS;
		1867	if (items > 0)
		1868	{
		1869	if (pri < PRI_MIN) pri = PRI_MIN;
		1870	if (pri > PRI_MAX) pri = PRI_MAX;
		1871	next_pri = pri + PRI_BIAS;
		1872	}
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	void
		1877	aioreq_nice (int nice = 0)
		1878	CODE:
		1879	nice = next_pri - nice;
		1880	if (nice < PRI_MIN) nice = PRI_MIN;
		1881	if (nice > PRI_MAX) nice = PRI_MAX;
		1882	next_pri = nice + PRI_BIAS;
1160		1883
1161	void	1884	void
1162	flush ()	1885	flush ()
1163	PROTOTYPE:	1886	PROTOTYPE:
1164	CODE:	1887	CODE:
…		…
1166	{	1889	{
1167	poll_wait ();	1890	poll_wait ();
1168	poll_cb ();	1891	poll_cb ();
1169	}	1892	}
1170		1893
1171	void	1894	int
1172	poll()	1895	poll()
1173	PROTOTYPE:	1896	PROTOTYPE:
1174	CODE:	1897	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();	1898	poll_wait ();
1178	poll_cb ();	1899	RETVAL = poll_cb ();
1179	}	1900	OUTPUT:
		1901	RETVAL
1180		1902
1181	int	1903	int
1182	poll_fileno()	1904	poll_fileno()
1183	PROTOTYPE:	1905	PROTOTYPE:
1184	CODE:	1906	CODE:
…		…
1196		1918
1197	void	1919	void
1198	poll_wait()	1920	poll_wait()
1199	PROTOTYPE:	1921	PROTOTYPE:
1200	CODE:	1922	CODE:
1201	if (nreqs)
1202	poll_wait ();	1923	poll_wait ();
		1924
		1925	void
		1926	setsig (int signum = SIGIO)
		1927	PROTOTYPE: ;$
		1928	CODE:
		1929	{
		1930	if (block_sig_level)
		1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1932
		1933	X_LOCK (reslock);
		1934	main_tid = pthread_self ();
		1935	main_sig = signum;
		1936	X_UNLOCK (reslock);
		1937
		1938	if (main_sig && npending)
		1939	pthread_kill (main_tid, main_sig);
		1940	}
		1941
		1942	void
		1943	aio_block (SV *cb)
		1944	PROTOTYPE: &
		1945	PPCODE:
		1946	{
		1947	int count;
		1948
		1949	block_sig ();
		1950	PUSHMARK (SP);
		1951	PUTBACK;
		1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1953	SPAGAIN;
		1954	unblock_sig ();
		1955
		1956	if (SvTRUE (ERRSV))
		1957	croak (0);
		1958
		1959	XSRETURN (count);
		1960	}
1203		1961
1204	int	1962	int
1205	nreqs()	1963	nreqs()
1206	PROTOTYPE:	1964	PROTOTYPE:
1207	CODE:	1965	CODE:
1208	RETVAL = nreqs;	1966	RETVAL = nreqs;
1209	OUTPUT:	1967	OUTPUT:
1210	RETVAL	1968	RETVAL
1211		1969
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1970	int
1213		1971	nready()
1214	void
1215	cancel (aio_req_ornot req)
1216	PROTOTYPE:	1972	PROTOTYPE:
1217	CODE:	1973	CODE:
		1974	RETVAL = get_nready ();
		1975	OUTPUT:
		1976	RETVAL
		1977
		1978	int
		1979	npending()
		1980	PROTOTYPE:
		1981	CODE:
		1982	RETVAL = get_npending ();
		1983	OUTPUT:
		1984	RETVAL
		1985
		1986	int
		1987	nthreads()
		1988	PROTOTYPE:
		1989	CODE:
		1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1991	RETVAL = started;
		1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1993	OUTPUT:
		1994	RETVAL
		1995
		1996	PROTOTYPES: DISABLE
		1997
		1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1999
		2000	void
		2001	cancel (aio_req_ornot req)
		2002	CODE:
1218	req_cancel (req);	2003	req_cancel (req);
1219		2004
		2005	void
		2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		2007	CODE:
		2008	SvREFCNT_dec (req->callback);
		2009	req->callback = newSVsv (callback);
		2010
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		2012
1222	void	2013	void
1223	add (aio_req grp, ...)	2014	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	2015	PPCODE:
1226	{	2016	{
1227	int i;	2017	int i;
		2018	aio_req req;
		2019
		2020	if (main_sig && !block_sig_level)
		2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2022
		2023	if (grp->int1 == 2)
		2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		2025
1229	for (i = 1; i < items; ++i )	2026	for (i = 1; i < items; ++i )
1230	{	2027	{
1231	if (GIMME_V != G_VOID)	2028	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		2030
1234	aio_req req = SvAIO_REQ (ST (i));	2031	req = SvAIO_REQ (ST (i));
1235	printf ("req = %p\n", req);//D
1236		2032
1237	if (req)	2033	if (req)
1238	{	2034	{
1239	req->grp_prev = grp;	2035	++grp->size;
1240	req->grp_next = grp->grp_next;
1241	grp->grp_next->grp_prev = req;
1242	grp->grp_next = req;
1243
1244	req->grp = grp;	2036	req->grp = grp;
		2037
		2038	req->grp_prev = 0;
		2039	req->grp_next = grp->grp_first;
		2040
		2041	if (grp->grp_first)
		2042	grp->grp_first->grp_prev = req;
		2043
		2044	grp->grp_first = req;
1245	}	2045	}
1246	}	2046	}
1247	}	2047	}
1248		2048
		2049	void
		2050	cancel_subs (aio_req_ornot req)
		2051	CODE:
		2052	req_cancel_subs (req);
		2053
		2054	void
		2055	result (aio_req grp, ...)
		2056	CODE:
		2057	{
		2058	int i;
		2059	AV *av;
		2060
		2061	grp->errorno = errno;
		2062
		2063	av = newAV ();
		2064
		2065	for (i = 1; i < items; ++i )
		2066	av_push (av, newSVsv (ST (i)));
		2067
		2068	SvREFCNT_dec (grp->sv1);
		2069	grp->sv1 = (SV *)av;
		2070	}
		2071
		2072	void
		2073	errno (aio_req grp, int errorno = errno)
		2074	CODE:
		2075	grp->errorno = errorno;
		2076
		2077	void
		2078	limit (aio_req grp, int limit)
		2079	CODE:
		2080	grp->int2 = limit;
		2081	aio_grp_feed (grp);
		2082
		2083	void
		2084	feed (aio_req grp, SV *callback=&PL_sv_undef)
		2085	CODE:
		2086	{
		2087	SvREFCNT_dec (grp->sv2);
		2088	grp->sv2 = newSVsv (callback);
		2089
		2090	if (grp->int2 <= 0)
		2091	grp->int2 = 2;
		2092
		2093	aio_grp_feed (grp);
		2094	}
		2095

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