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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.112 by root, Tue Apr 1 19:40:47 2008 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/types.h>	12	#include <sys/types.h>
15	#include <sys/stat.h>	13	#include <sys/stat.h>
16	#include <limits.h>	14	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	15	#include <fcntl.h>
19	#include <signal.h>
20	#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
21		68
22	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
23	# if __linux	70	# if __linux
24	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
25	# elif __freebsd	72	# elif __freebsd
…		…
32	# else	79	# else
33	# error sendfile support requested but not available	80	# error sendfile support requested but not available
34	# endif	81	# endif
35	#endif	82	#endif
36		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
37	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
38	#ifndef NAME_MAX	88	#ifndef NAME_MAX
39	# define NAME_MAX 4096	89	# define NAME_MAX 4096
40	#endif	90	#endif
41		91
42	#if __ia64	92	/* buffer size for various temporary buffers */
43	# 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
44	#else	98	#else
45	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
46	#endif	100	#endif
		101
		102	static HV *stash;
		103
		104	#define dBUF \
		105	char *aio_buf; \
		106	X_LOCK (wrklock); \
		107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		108	X_UNLOCK (wrklock); \
		109	if (!aio_buf) \
		110	return -1;
		111
		112	typedef SV SV8; /* byte-sv, used for argument-checking */
47		113
48	enum {	114	enum {
49	REQ_QUIT,	115	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
52	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		120	REQ_TRUNCATE, REQ_FTRUNCATE,
		121	REQ_UTIME, REQ_FUTIME,
		122	REQ_CHMOD, REQ_FCHMOD,
		123	REQ_CHOWN, REQ_FCHOWN,
54	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
56	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
		128	REQ_GROUP, REQ_NOP,
		129	REQ_BUSY,
58	};	130	};
59		131
		132	#define AIO_REQ_KLASS "IO::AIO::REQ"
		133	#define AIO_GRP_KLASS "IO::AIO::GRP"
		134
60	typedef struct aio_cb {	135	typedef struct aio_cb
		136	{
61	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
62		138
		139	SV *callback;
		140	SV *sv1, *sv2;
		141	void *ptr1, *ptr2;
		142	off_t offs;
		143	size_t size;
		144	ssize_t result;
		145	double nv1, nv2;
		146
		147	STRLEN stroffset;
63	int type;	148	int type;
64		149	int int1, int2, int3;
65	/* should receive a cleanup, with unions */	150	int errorno;
66	int fd, fd2;
67	off_t offset;
68	size_t length;
69	ssize_t result;
70	mode_t mode; /* open */	151	mode_t mode; /* open */
71	int errorno;
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	STRLEN dataoffset;
76		152
77	Stat_t *statdata;	153	unsigned char flags;
		154	unsigned char pri;
		155
		156	SV *self; /* the perl counterpart of this request, if any */
		157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
78	} aio_cb;	158	} aio_cb;
79		159
		160	enum {
		161	FLAG_CANCELLED = 0x01, /* request was cancelled */
		162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
		164	};
		165
80	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
		167	typedef aio_cb *aio_req_ornot;
81		168
		169	enum {
		170	PRI_MIN = -4,
		171	PRI_MAX = 4,
		172
		173	DEFAULT_PRI = 0,
		174	PRI_BIAS = -PRI_MIN,
		175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		176	};
		177
		178	#define AIO_TICKS ((1000000 + 1023) >> 10)
		179
		180	static unsigned int max_poll_time = 0;
		181	static unsigned int max_poll_reqs = 0;
		182
		183	/* calculcate time difference in ~1/AIO_TICKS of a second */
		184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		185	{
		186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		188	}
		189
		190	static thread_t main_tid;
		191	static int main_sig;
		192	static int block_sig_level;
		193
		194	void block_sig (void)
		195	{
		196	sigset_t ss;
		197
		198	if (block_sig_level++)
		199	return;
		200
		201	if (!main_sig)
		202	return;
		203
		204	sigemptyset (&ss);
		205	sigaddset (&ss, main_sig);
		206	pthread_sigmask (SIG_BLOCK, &ss, 0);
		207	}
		208
		209	void unblock_sig (void)
		210	{
		211	sigset_t ss;
		212
		213	if (--block_sig_level)
		214	return;
		215
		216	if (!main_sig)
		217	return;
		218
		219	sigemptyset (&ss);
		220	sigaddset (&ss, main_sig);
		221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		222	}
		223
		224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		225
82	static int started, wanted;	226	static unsigned int started, idle, wanted;
83	static volatile int nreqs;
84	static int max_outstanding = 1<<30;
85	static int respipe [2];
86		227
		228	/* worker threads management */
		229	static mutex_t wrklock = X_MUTEX_INIT;
		230
		231	typedef struct worker {
		232	/* locked by wrklock */
		233	struct worker *prev, *next;
		234
		235	thread_t tid;
		236
		237	/* locked by reslock, reqlock or wrklock */
		238	aio_req req; /* currently processed request */
		239	void *dbuf;
		240	DIR *dirp;
		241	} worker;
		242
		243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		244
		245	static void worker_clear (worker *wrk)
		246	{
		247	if (wrk->dirp)
		248	{
		249	closedir (wrk->dirp);
		250	wrk->dirp = 0;
		251	}
		252
		253	if (wrk->dbuf)
		254	{
		255	free (wrk->dbuf);
		256	wrk->dbuf = 0;
		257	}
		258	}
		259
		260	static void worker_free (worker *wrk)
		261	{
		262	wrk->next->prev = wrk->prev;
		263	wrk->prev->next = wrk->next;
		264
		265	free (wrk);
		266	}
		267
		268	static volatile unsigned int nreqs, nready, npending;
		269	static volatile unsigned int max_idle = 4;
		270	static volatile unsigned int max_outstanding = 0xffffffff;
		271	static int respipe_osf [2], respipe [2] = { -1, -1 };
		272
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	273	static mutex_t reslock = X_MUTEX_INIT;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	274	static mutex_t reqlock = X_MUTEX_INIT;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
90		276
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	277	#if WORDACCESS_UNSAFE
92	static volatile aio_req ress, rese; /* queue start, queue end */
93		278
		279	static unsigned int get_nready (void)
		280	{
		281	unsigned int retval;
		282
		283	X_LOCK (reqlock);
		284	retval = nready;
		285	X_UNLOCK (reqlock);
		286
		287	return retval;
		288	}
		289
		290	static unsigned int get_npending (void)
		291	{
		292	unsigned int retval;
		293
		294	X_LOCK (reslock);
		295	retval = npending;
		296	X_UNLOCK (reslock);
		297
		298	return retval;
		299	}
		300
		301	static unsigned int get_nthreads (void)
		302	{
		303	unsigned int retval;
		304
		305	X_LOCK (wrklock);
		306	retval = started;
		307	X_UNLOCK (wrklock);
		308
		309	return retval;
		310	}
		311
		312	#else
		313
		314	# define get_nready() nready
		315	# define get_npending() npending
		316	# define get_nthreads() started
		317
		318	#endif
		319
		320	/*
		321	* a somewhat faster data structure might be nice, but
		322	* with 8 priorities this actually needs <20 insns
		323	* per shift, the most expensive operation.
		324	*/
		325	typedef struct {
		326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		327	int size;
		328	} reqq;
		329
		330	static reqq req_queue;
		331	static reqq res_queue;
		332
		333	int reqq_push (reqq *q, aio_req req)
		334	{
		335	int pri = req->pri;
		336	req->next = 0;
		337
		338	if (q->qe[pri])
		339	{
		340	q->qe[pri]->next = req;
		341	q->qe[pri] = req;
		342	}
		343	else
		344	q->qe[pri] = q->qs[pri] = req;
		345
		346	return q->size++;
		347	}
		348
		349	aio_req reqq_shift (reqq *q)
		350	{
		351	int pri;
		352
		353	if (!q->size)
		354	return 0;
		355
		356	--q->size;
		357
		358	for (pri = NUM_PRI; pri--; )
		359	{
		360	aio_req req = q->qs[pri];
		361
		362	if (req)
		363	{
		364	if (!(q->qs[pri] = req->next))
		365	q->qe[pri] = 0;
		366
		367	return req;
		368	}
		369	}
		370
		371	abort ();
		372	}
		373
		374	static int poll_cb (void);
		375	static int req_invoke (aio_req req);
		376	static void req_destroy (aio_req req);
94	static void free_req (aio_req req)	377	static void req_cancel (aio_req req);
		378
		379	/* must be called at most once */
		380	static SV *req_sv (aio_req req, const char *klass)
95	{	381	{
		382	if (!req->self)
		383	{
		384	req->self = (SV *)newHV ();
		385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		386	}
		387
		388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		389	}
		390
		391	static aio_req SvAIO_REQ (SV *sv)
		392	{
		393	MAGIC *mg;
		394
		395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		396	croak ("object of class " AIO_REQ_KLASS " expected");
		397
		398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		399
		400	return mg ? (aio_req)mg->mg_ptr : 0;
		401	}
		402
		403	static void aio_grp_feed (aio_req grp)
		404	{
		405	block_sig ();
		406
		407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
		408	{
		409	int old_len = grp->size;
		410
		411	if (grp->sv2 && SvOK (grp->sv2))
		412	{
		413	dSP;
		414
		415	ENTER;
		416	SAVETMPS;
		417	PUSHMARK (SP);
		418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		419	PUTBACK;
		420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		421	SPAGAIN;
		422	FREETMPS;
		423	LEAVE;
		424	}
		425
		426	/* stop if no progress has been made */
		427	if (old_len == grp->size)
		428	{
		429	SvREFCNT_dec (grp->sv2);
		430	grp->sv2 = 0;
		431	break;
		432	}
		433	}
		434
		435	unblock_sig ();
		436	}
		437
		438	static void aio_grp_dec (aio_req grp)
		439	{
		440	--grp->size;
		441
		442	/* call feeder, if applicable */
		443	aio_grp_feed (grp);
		444
		445	/* finish, if done */
		446	if (!grp->size && grp->int1)
		447	{
		448	block_sig ();
		449
		450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
		457	req_destroy (grp);
		458	unblock_sig ();
		459	}
		460	}
		461
		462	static int req_invoke (aio_req req)
		463	{
		464	dSP;
		465
		466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
		468
		469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		470	{
		471	ENTER;
		472	SAVETMPS;
		473	PUSHMARK (SP);
		474	EXTEND (SP, 1);
		475
		476	switch (req->type)
		477	{
		478	case REQ_READDIR:
		479	{
		480	SV *rv = &PL_sv_undef;
		481
		482	if (req->result >= 0)
		483	{
		484	int i;
		485	char *buf = req->ptr2;
		486	AV *av = newAV ();
		487
		488	av_extend (av, req->result - 1);
		489
		490	for (i = 0; i < req->result; ++i)
		491	{
		492	SV *sv = newSVpv (buf, 0);
		493
		494	av_store (av, i, sv);
		495	buf += SvCUR (sv) + 1;
		496	}
		497
		498	rv = sv_2mortal (newRV_noinc ((SV *)av));
		499	}
		500
		501	PUSHs (rv);
		502	}
		503	break;
		504
		505	case REQ_OPEN:
		506	{
		507	/* convert fd to fh */
		508	SV *fh = &PL_sv_undef;
		509
		510	if (req->result >= 0)
		511	{
		512	GV *gv = (GV *)sv_newmortal ();
		513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		514	char sym [64];
		515	int symlen;
		516
		517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		518	gv_init (gv, stash, sym, symlen, 0);
		519
		520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	req->result
		526	);
		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = (SV *)gv;
		530	}
		531
		532	PUSHs (fh);
		533	}
		534	break;
		535
		536	case REQ_GROUP:
		537	req->int1 = 2; /* mark group as finished */
		538
		539	if (req->sv1)
		540	{
		541	int i;
		542	AV *av = (AV *)req->sv1;
		543
		544	EXTEND (SP, AvFILL (av) + 1);
		545	for (i = 0; i <= AvFILL (av); ++i)
		546	PUSHs (*av_fetch (av, i, 0));
		547	}
		548	break;
		549
		550	case REQ_NOP:
		551	case REQ_BUSY:
		552	break;
		553
		554	case REQ_READLINK:
		555	if (req->result > 0)
		556	{
		557	SvCUR_set (req->sv2, req->result);
		558	*SvEND (req->sv2) = 0;
		559	PUSHs (req->sv2);
		560	}
		561	break;
		562
		563	case REQ_STAT:
		564	case REQ_LSTAT:
		565	case REQ_FSTAT:
		566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		567	PL_laststatval = req->result;
		568	PL_statcache = *(Stat_t *)(req->ptr2);
		569	PUSHs (sv_2mortal (newSViv (req->result)));
		570	break;
		571
		572	case REQ_READ:
		573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		574	*SvEND (req->sv2) = 0;
		575	PUSHs (sv_2mortal (newSViv (req->result)));
		576	break;
		577
		578	default:
		579	PUSHs (sv_2mortal (newSViv (req->result)));
		580	break;
		581	}
		582
		583	errno = req->errorno;
		584
		585	PUTBACK;
		586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		587	SPAGAIN;
		588
		589	FREETMPS;
		590	LEAVE;
		591
		592	PUTBACK;
		593	}
		594
96	if (req->data)	595	if (req->grp)
97	SvREFCNT_dec (req->data);	596	{
		597	aio_req grp = req->grp;
98		598
		599	/* unlink request */
		600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		602
		603	if (grp->grp_first == req)
		604	grp->grp_first = req->grp_next;
		605
		606	aio_grp_dec (grp);
		607	}
		608
		609	return !SvTRUE (ERRSV);
		610	}
		611
		612	static void req_destroy (aio_req req)
		613	{
99	if (req->fh)	614	if (req->self)
		615	{
		616	sv_unmagic (req->self, PERL_MAGIC_ext);
100	SvREFCNT_dec (req->fh);	617	SvREFCNT_dec (req->self);
		618	}
101		619
102	if (req->fh2)	620	SvREFCNT_dec (req->sv1);
103	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
104
105	if (req->statdata)
106	Safefree (req->statdata);
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
110		623
111	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
112	free (req->data2ptr);	625	free (req->ptr2);
113		626
114	Safefree (req);	627	Safefree (req);
115	}	628	}
116		629
		630	static void req_cancel_subs (aio_req grp)
		631	{
		632	aio_req sub;
		633
		634	if (grp->type != REQ_GROUP)
		635	return;
		636
		637	SvREFCNT_dec (grp->sv2);
		638	grp->sv2 = 0;
		639
		640	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		641	req_cancel (sub);
		642	}
		643
		644	static void req_cancel (aio_req req)
		645	{
		646	req->flags |= FLAG_CANCELLED;
		647
		648	req_cancel_subs (req);
		649	}
		650
		651	#ifdef USE_SOCKETS_AS_HANDLES
		652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		653	#else
		654	# define TO_SOCKET(x) (x)
		655	#endif
		656
117	static void	657	static void
118	poll_wait ()	658	create_respipe (void)
119	{	659	{
120	if (nreqs && !ress)	660	int old_readfd = respipe [0];
		661
		662	if (respipe [1] >= 0)
		663	respipe_close (TO_SOCKET (respipe [1]));
		664
		665	#ifdef _WIN32
		666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		667	#else
		668	if (pipe (respipe))
		669	#endif
		670	croak ("unable to initialize result pipe");
		671
		672	if (old_readfd >= 0)
121	{	673	{
122	fd_set rfd;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
123	FD_ZERO(&rfd);	675	croak ("unable to initialize result pipe(2)");
124	FD_SET(respipe [0], &rfd);
125		676
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	677	respipe_close (respipe [0]);
		678	respipe [0] = old_readfd;
127	}	679	}
128	}
129		680
130	static int	681	#ifdef _WIN32
131	poll_cb ()	682	int arg = 1;
		683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		685	#else
		686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		688	#endif
		689	croak ("unable to initialize result pipe(3)");
		690
		691	respipe_osf [0] = TO_SOCKET (respipe [0]);
		692	respipe_osf [1] = TO_SOCKET (respipe [1]);
		693	}
		694
		695	X_THREAD_PROC (aio_proc);
		696
		697	static void start_thread (void)
		698	{
		699	worker *wrk = calloc (1, sizeof (worker));
		700
		701	if (!wrk)
		702	croak ("unable to allocate worker thread data");
		703
		704	X_LOCK (wrklock);
		705
		706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		707	{
		708	wrk->prev = &wrk_first;
		709	wrk->next = wrk_first.next;
		710	wrk_first.next->prev = wrk;
		711	wrk_first.next = wrk;
		712	++started;
		713	}
		714	else
		715	free (wrk);
		716
		717	X_UNLOCK (wrklock);
		718	}
		719
		720	static void maybe_start_thread (void)
		721	{
		722	if (get_nthreads () >= wanted)
		723	return;
		724
		725	/* todo: maybe use idle here, but might be less exact */
		726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		727	return;
		728
		729	start_thread ();
		730	}
		731
		732	static void req_send (aio_req req)
		733	{
		734	block_sig ();
		735
		736	++nreqs;
		737
		738	X_LOCK (reqlock);
		739	++nready;
		740	reqq_push (&req_queue, req);
		741	X_COND_SIGNAL (reqwait);
		742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
		745
		746	maybe_start_thread ();
		747	}
		748
		749	static void end_thread (void)
		750	{
		751	aio_req req;
		752
		753	Newz (0, req, 1, aio_cb);
		754
		755	req->type = REQ_QUIT;
		756	req->pri = PRI_MAX + PRI_BIAS;
		757
		758	X_LOCK (reqlock);
		759	reqq_push (&req_queue, req);
		760	X_COND_SIGNAL (reqwait);
		761	X_UNLOCK (reqlock);
		762
		763	X_LOCK (wrklock);
		764	--started;
		765	X_UNLOCK (wrklock);
		766	}
		767
		768	static void set_max_idle (int nthreads)
		769	{
		770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		771	max_idle = nthreads <= 0 ? 1 : nthreads;
		772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		773	}
		774
		775	static void min_parallel (int nthreads)
		776	{
		777	if (wanted < nthreads)
		778	wanted = nthreads;
		779	}
		780
		781	static void max_parallel (int nthreads)
		782	{
		783	if (wanted > nthreads)
		784	wanted = nthreads;
		785
		786	while (started > wanted)
		787	end_thread ();
		788	}
		789
		790	static void poll_wait (void)
		791	{
		792	fd_set rfd;
		793
		794	while (nreqs)
		795	{
		796	int size;
		797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		798	size = res_queue.size;
		799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		800
		801	if (size)
		802	return;
		803
		804	maybe_start_thread ();
		805
		806	FD_ZERO (&rfd);
		807	FD_SET (respipe [0], &rfd);
		808
		809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		810	}
		811	}
		812
		813	static int poll_cb (void)
132	{	814	{
133	dSP;	815	dSP;
134	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
135	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
136	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
137		826
138	for (;;)	827	for (;;)
139	{	828	{
140	pthread_mutex_lock (&reslock);	829	for (;;)
141	req = ress;
142
143	if (req)
144	{	830	{
145	ress = req->next;	831	maybe_start_thread ();
146		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
147	if (!ress)	836	if (req)
148	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
149	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
150	char buf [32];	843	char buf [4];
151	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
152	;	846	}
153
154	rese = 0;
155	}	847	}
156	}
157		848
158	pthread_mutex_unlock (&reslock);	849	X_UNLOCK (reslock);
159		850
160	if (!req)	851	if (!req)
161	break;	852	break;
162		853
163	nreqs--;	854	--nreqs;
164		855
165	if (req->type == REQ_QUIT)
166	started--;
167	else
168	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)	856	if (req->type == REQ_GROUP && req->size)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174
175	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);
177
178	if (req->statdata)
179	{	857	{
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	858	req->int1 = 1; /* mark request as delayed */
181	PL_laststatval = req->result;	859	continue;
182	PL_statcache = *(req->statdata);
183	}
184
185	ENTER;
186	PUSHMARK (SP);
187
188	if (req->type == REQ_READDIR)
189	{
190	SV *rv = &PL_sv_undef;
191
192	if (req->result >= 0)
193	{
194	char *buf = req->data2ptr;
195	AV *av = newAV ();
196
197	while (req->result)
198	{
199	SV *sv = newSVpv (buf, 0);
200
201	av_push (av, sv);
202	buf += SvCUR (sv) + 1;
203	req->result--;
204	}
205
206	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}
208
209	XPUSHs (rv);
210	}	860	}
211	else	861	else
212	{	862	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));	863	if (!req_invoke (req))
214
215	if (req->type == REQ_OPEN)
216	{	864	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}
229	}
230
231	if (SvOK (req->callback))
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID | G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);	865	req_destroy (req);
		866	unblock_sig ();
240	croak (0);	867	croak (0);
241	}	868	}
		869
		870	count++;
242	}	871	}
243		872
244	LEAVE;	873	req_destroy (req);
245		874
246	errno = errorno;	875	if (maxreqs && !--maxreqs)
247	count++;	876	break;
		877
		878	if (max_poll_time)
		879	{
		880	gettimeofday (&tv_now, 0);
		881
		882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		883	break;
		884	}
248	}	885	}
249		886
250	free_req (req);	887	if (nreqs <= max_outstanding)
		888	break;
		889
		890	poll_wait ();
		891
		892	++maxreqs;
251	}	893	}
252		894
		895	unblock_sig ();
253	return count;	896	return count;
254	}
255
256	static void *aio_proc(void *arg);
257
258	static void
259	start_thread (void)
260	{
261	sigset_t fullsigset, oldsigset;
262	pthread_t tid;
263	pthread_attr_t attr;
264
265	pthread_attr_init (&attr);
266	pthread_attr_setstacksize (&attr, STACKSIZE);
267	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
268
269	sigfillset (&fullsigset);
270	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
271
272	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
273	started++;
274
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);
276	}
277
278	static void
279	send_req (aio_req req)
280	{
281	while (started < wanted && nreqs >= started)
282	start_thread ();
283
284	nreqs++;
285
286	pthread_mutex_lock (&reqlock);
287
288	req->next = 0;
289
290	if (reqe)
291	{
292	reqe->next = req;
293	reqe = req;
294	}
295	else
296	reqe = reqs = req;
297
298	pthread_cond_signal (&reqwait);
299	pthread_mutex_unlock (&reqlock);
300
301	if (nreqs > max_outstanding)
302	for (;;)
303	{
304	poll_cb ();
305
306	if (nreqs <= max_outstanding)
307	break;
308
309	poll_wait ();
310	}
311	}
312
313	static void
314	end_thread (void)
315	{
316	aio_req req;
317	Newz (0, req, 1, aio_cb);
318	req->type = REQ_QUIT;
319
320	send_req (req);
321	}
322
323	static void min_parallel (int nthreads)
324	{
325	if (wanted < nthreads)
326	wanted = nthreads;
327	}
328
329	static void max_parallel (int nthreads)
330	{
331	int cur = started;
332
333	if (wanted > nthreads)
334	wanted = nthreads;
335
336	while (cur > wanted)
337	{
338	end_thread ();
339	cur--;
340	}
341
342	while (started > wanted)
343	{
344	poll_wait ();
345	poll_cb ();
346	}
347	}
348
349	static void create_pipe ()
350	{
351	if (pipe (respipe))
352	croak ("unable to initialize result pipe");
353
354	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
355	croak ("cannot set result pipe to nonblocking mode");
356
357	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
358	croak ("cannot set result pipe to nonblocking mode");
359	}	897	}
360		898
361	/*****************************************************************************/	899	/*****************************************************************************/
362	/* work around various missing functions */	900	/* work around various missing functions */
363		901
…		…
368	/*	906	/*
369	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,	908	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	909	* but that's your problem, not mine.
372	*/	910	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
374		912
375	static ssize_t	913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	914	{
378	ssize_t res;	915	ssize_t res;
379	off_t ooffset;	916	off_t ooffset;
380		917
381	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	921	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
387		924
388	return res;	925	return res;
389	}	926	}
390		927
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	929	{
394	ssize_t res;	930	ssize_t res;
395	off_t ooffset;	931	off_t ooffset;
396		932
397	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	936	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
403		939
404	return res;	940	return res;
405	}	941	}
		942	#endif
		943
		944	#ifndef HAVE_FUTIMES
		945
		946	# define utimes(path,times) aio_utimes (path, times)
		947	# define futimes(fd,times) aio_futimes (fd, times)
		948
		949	int aio_utimes (const char *filename, const struct timeval times[2])
		950	{
		951	if (times)
		952	{
		953	struct utimbuf buf;
		954
		955	buf.actime = times[0].tv_sec;
		956	buf.modtime = times[1].tv_sec;
		957
		958	return utime (filename, &buf);
		959	}
		960	else
		961	return utime (filename, 0);
		962	}
		963
		964	int aio_futimes (int fd, const struct timeval tv[2])
		965	{
		966	errno = ENOSYS;
		967	return -1;
		968	}
		969
406	#endif	970	#endif
407		971
408	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
409	# define fdatasync fsync	973	# define fdatasync fsync
410	#endif	974	#endif
411		975
412	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
414		978
415	static ssize_t	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
416	readahead (int fd, off_t offset, size_t count)
417	{	980	{
418	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
419		983
420	while (count > 0)	984	while (todo > 0)
421	{	985	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
423		987
424	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
425	offset += len;	989	offset += len;
426	count -= len;	990	todo -= len;
427	}	991	}
428		992
429	errno = 0;	993	errno = 0;
		994	return count;
430	}	995	}
		996
431	#endif	997	#endif
432		998
433	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
435		1001
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
437		1003
438	static int	1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
439	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
440	{	1005	{
441	struct dirent *e;	1006	X_DIRENT *e;
442	int errorno;	1007	int errorno;
443		1008
444	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
445		1010
446	e = readdir (dirp);	1011	e = readdir (dirp);
447	errorno = errno;	1012	errorno = errno;
448		1013
449	if (e)	1014	if (e)
…		…
452	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
453	}	1018	}
454	else	1019	else
455	*res = 0;	1020	*res = 0;
456		1021
457	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
458		1023
459	errno = errorno;	1024	errno = errorno;
460	return e ? 0 : -1;	1025	return e ? 0 : -1;
461	}	1026	}
462	#endif	1027	#endif
463		1028
464	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
467	{	1031	{
468	ssize_t res;	1032	ssize_t res;
469		1033
470	if (!count)	1034	if (!count)
471	return 0;	1035	return 0;
…		…
482	{	1046	{
483	off_t sbytes;	1047	off_t sbytes;
484	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
485		1049
486	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
487	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
488	res = sbytes;	1052	res = sbytes;
489	}	1053	}
490		1054
491	# elif __hpux	1055	# elif __hpux
492	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
520	#endif	1084	#endif
521	)	1085	)
522	)	1086	)
523	{	1087	{
524	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];	1089	dBUF;
		1090
526	res = 0;	1091	res = 0;
527		1092
528	while (count)	1093	while (count)
529	{	1094	{
530	ssize_t cnt;	1095	ssize_t cnt;
531		1096
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
533		1098
534	if (cnt <= 0)	1099	if (cnt <= 0)
535	{	1100	{
536	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
537	break;	1102	break;
538	}	1103	}
539		1104
540	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
541		1106
542	if (cnt <= 0)	1107	if (cnt <= 0)
543	{	1108	{
544	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
545	break;	1110	break;
…		…
553		1118
554	return res;	1119	return res;
555	}	1120	}
556		1121
557	/* read a full directory */	1122	/* read a full directory */
558	static int	1123	static void scandir_ (aio_req req, worker *self)
559	scandir_ (const char *path, void **namesp)
560	{	1124	{
561	DIR *dirp = opendir (path);	1125	DIR *dirp;
562	union	1126	union
563	{	1127	{
564	struct dirent d;	1128	X_DIRENT d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
566	} u;	1130	} *u;
567	struct dirent *entp;	1131	X_DIRENT *entp;
568	char *name, *names;	1132	char *name, *names;
569	int memlen = 4096;	1133	int memlen = 4096;
570	int memofs = 0;	1134	int memofs = 0;
571	int res = 0;	1135	int res = 0;
572	int errorno;
573		1136
574	if (!dirp)	1137	X_LOCK (wrklock);
575	return -1;	1138	self->dirp = dirp = opendir (req->ptr1);
576		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
577	names = malloc (memlen);	1141	req->ptr2 = names = malloc (memlen);
		1142	X_UNLOCK (wrklock);
		1143
		1144	if (dirp && u && names)
		1145	for (;;)
		1146	{
		1147	errno = 0;
		1148	readdir_r (dirp, &u->d, &entp);
		1149
		1150	if (!entp)
		1151	break;
		1152
		1153	name = entp->d_name;
		1154
		1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1156	{
		1157	int len = strlen (name) + 1;
		1158
		1159	res++;
		1160
		1161	while (memofs + len > memlen)
		1162	{
		1163	memlen *= 2;
		1164	X_LOCK (wrklock);
		1165	req->ptr2 = names = realloc (names, memlen);
		1166	X_UNLOCK (wrklock);
		1167
		1168	if (!names)
		1169	break;
		1170	}
		1171
		1172	memcpy (names + memofs, name, len);
		1173	memofs += len;
		1174	}
		1175	}
		1176
		1177	if (errno)
		1178	res = -1;
		1179
		1180	req->result = res;
		1181	}
		1182
		1183	/*****************************************************************************/
		1184
		1185	X_THREAD_PROC (aio_proc)
		1186	{
		1187	aio_req req;
		1188	struct timespec ts;
		1189	worker *self = (worker *)thr_arg;
		1190
		1191	/* try to distribute timeouts somewhat randomly */
		1192	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
578		1193
579	for (;;)	1194	for (;;)
580	{	1195	{
581	errno = 0, readdir_r (dirp, &u.d, &entp);	1196	ts.tv_sec = time (0) + IDLE_TIMEOUT;
582		1197
583	if (!entp)	1198	X_LOCK (reqlock);
584	break;
585
586	name = entp->d_name;
587
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{
590	int len = strlen (name) + 1;
591
592	res++;
593
594	while (memofs + len > memlen)
595	{
596	memlen *= 2;
597	names = realloc (names, memlen);
598	if (!names)
599	break;
600	}
601
602	memcpy (names + memofs, name, len);
603	memofs += len;
604	}
605	}
606
607	errorno = errno;
608	closedir (dirp);
609
610	if (errorno)
611	{
612	free (names);
613	errno = errorno;
614	res = -1;
615	}
616
617	*namesp = (void *)names;
618	return res;
619	}
620
621	/*****************************************************************************/
622
623	static void *
624	aio_proc (void *thr_arg)
625	{
626	aio_req req;
627	int type;
628
629	do
630	{
631	pthread_mutex_lock (&reqlock);
632		1199
633	for (;;)	1200	for (;;)
634	{	1201	{
635	req = reqs;	1202	self->req = req = reqq_shift (&req_queue);
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642		1203
643	if (req)	1204	if (req)
644	break;	1205	break;
645		1206
646	pthread_cond_wait (&reqwait, &reqlock);	1207	++idle;
		1208
		1209	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1210	== ETIMEDOUT)
		1211	{
		1212	if (idle > max_idle)
		1213	{
		1214	--idle;
		1215	X_UNLOCK (reqlock);
		1216	X_LOCK (wrklock);
		1217	--started;
		1218	X_UNLOCK (wrklock);
		1219	goto quit;
		1220	}
		1221
		1222	/* we are allowed to idle, so do so without any timeout */
		1223	X_COND_WAIT (reqwait, reqlock);
		1224	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1225	}
		1226
		1227	--idle;
647	}	1228	}
648		1229
649	pthread_mutex_unlock (&reqlock);	1230	--nready;
		1231
		1232	X_UNLOCK (reqlock);
650		1233
651	errno = 0; /* strictly unnecessary */	1234	errno = 0; /* strictly unnecessary */
652		1235
653	type = req->type;	1236	if (!(req->flags & FLAG_CANCELLED))
654
655	switch (type)	1237	switch (req->type)
		1238	{
		1239	case REQ_READ: req->result = req->offs >= 0
		1240	? pread (req->int1, req->ptr1, req->size, req->offs)
		1241	: read (req->int1, req->ptr1, req->size); break;
		1242	case REQ_WRITE: req->result = req->offs >= 0
		1243	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1244	: write (req->int1, req->ptr1, req->size); break;
		1245
		1246	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
		1247	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
		1248
		1249	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
		1250	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
		1251	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
		1252
		1253	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1254	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1255	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1256	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1257	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1258	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1259
		1260	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
		1261	case REQ_CLOSE: req->result = close (req->int1); break;
		1262	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
		1263	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1264	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
		1265	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
		1266	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
		1267	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1268	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1269	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
		1270
		1271	case REQ_SYNC: req->result = 0; sync (); break;
		1272	case REQ_FSYNC: req->result = fsync (req->int1); break;
		1273	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
		1274
		1275	case REQ_READDIR: scandir_ (req, self); break;
		1276
		1277	case REQ_BUSY:
		1278	#ifdef _WIN32
		1279	Sleep (req->nv1 * 1000.);
		1280	#else
		1281	{
		1282	struct timeval tv;
		1283
		1284	tv.tv_sec = req->nv1;
		1285	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
		1286
		1287	req->result = select (0, 0, 0, 0, &tv);
		1288	}
		1289	#endif
		1290	break;
		1291
		1292	case REQ_UTIME:
		1293	case REQ_FUTIME:
		1294	{
		1295	struct timeval tv[2];
		1296	struct timeval *times;
		1297
		1298	if (req->nv1 != -1. || req->nv2 != -1.)
		1299	{
		1300	tv[0].tv_sec = req->nv1;
		1301	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1302	tv[1].tv_sec = req->nv2;
		1303	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1304
		1305	times = tv;
		1306	}
		1307	else
		1308	times = 0;
		1309
		1310
		1311	req->result = req->type == REQ_FUTIME
		1312	? futimes (req->int1, times)
		1313	: utimes (req->ptr1, times);
		1314	}
		1315
		1316	case REQ_GROUP:
		1317	case REQ_NOP:
		1318	break;
		1319
		1320	case REQ_QUIT:
		1321	goto quit;
		1322
		1323	default:
		1324	req->result = -1;
		1325	break;
		1326	}
		1327
		1328	req->errorno = errno;
		1329
		1330	X_LOCK (reslock);
		1331
		1332	++npending;
		1333
		1334	if (!reqq_push (&res_queue, req))
656	{	1335	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1336	/* write a dummy byte to the pipe so fh becomes ready */
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1337	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
659		1338
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1339	/* optionally signal the main thread asynchronously */
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1340	if (main_sig)
662		1341	pthread_kill (main_tid, main_sig);
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
678
679	case REQ_QUIT:
680	break;
681
682	default:
683	req->result = ENOSYS;
684	break;
685	}	1342	}
686		1343
687	req->errorno = errno;	1344	self->req = 0;
		1345	worker_clear (self);
688		1346
689	pthread_mutex_lock (&reslock);	1347	X_UNLOCK (reslock);
690
691	req->next = 0;
692
693	if (rese)
694	{
695	rese->next = req;
696	rese = req;
697	}
698	else
699	{
700	rese = ress = req;
701
702	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);
704	}
705
706	pthread_mutex_unlock (&reslock);
707	}	1348	}
708	while (type != REQ_QUIT);	1349
		1350	quit:
		1351	X_LOCK (wrklock);
		1352	worker_free (self);
		1353	X_UNLOCK (wrklock);
709		1354
710	return 0;	1355	return 0;
711	}	1356	}
712		1357
713	/*****************************************************************************/	1358	/*****************************************************************************/
714		1359
715	static void atfork_prepare (void)	1360	static void atfork_prepare (void)
716	{	1361	{
717	pthread_mutex_lock (&reqlock);	1362	X_LOCK (wrklock);
718	pthread_mutex_lock (&reslock);	1363	X_LOCK (reqlock);
		1364	X_LOCK (reslock);
719	#if !HAVE_PREADWRITE	1365	#if !HAVE_PREADWRITE
720	pthread_mutex_lock (&preadwritelock);	1366	X_LOCK (preadwritelock);
721	#endif	1367	#endif
722	#if !HAVE_READDIR_R	1368	#if !HAVE_READDIR_R
723	pthread_mutex_lock (&readdirlock);	1369	X_LOCK (readdirlock);
724	#endif	1370	#endif
725	}	1371	}
726		1372
727	static void atfork_parent (void)	1373	static void atfork_parent (void)
728	{	1374	{
729	#if !HAVE_READDIR_R	1375	#if !HAVE_READDIR_R
730	pthread_mutex_unlock (&readdirlock);	1376	X_UNLOCK (readdirlock);
731	#endif	1377	#endif
732	#if !HAVE_PREADWRITE	1378	#if !HAVE_PREADWRITE
733	pthread_mutex_unlock (&preadwritelock);	1379	X_UNLOCK (preadwritelock);
734	#endif	1380	#endif
735	pthread_mutex_unlock (&reslock);	1381	X_UNLOCK (reslock);
736	pthread_mutex_unlock (&reqlock);	1382	X_UNLOCK (reqlock);
		1383	X_UNLOCK (wrklock);
737	}	1384	}
738		1385
739	static void atfork_child (void)	1386	static void atfork_child (void)
740	{	1387	{
741	aio_req prv;	1388	aio_req prv;
742		1389
743	started = 0;	1390	while (prv = reqq_shift (&req_queue))
		1391	req_destroy (prv);
744		1392
745	while (reqs)	1393	while (prv = reqq_shift (&res_queue))
		1394	req_destroy (prv);
		1395
		1396	while (wrk_first.next != &wrk_first)
746	{	1397	{
747	prv = reqs;	1398	worker *wrk = wrk_first.next;
748	reqs = prv->next;	1399
749	free_req (prv);	1400	if (wrk->req)
		1401	req_destroy (wrk->req);
		1402
		1403	worker_clear (wrk);
		1404	worker_free (wrk);
750	}	1405	}
751		1406
752	reqs = reqe = 0;	1407	started = 0;
753		1408	idle = 0;
754	while (ress)	1409	nreqs = 0;
755	{	1410	nready = 0;
756	prv = ress;	1411	npending = 0;
757	ress = prv->next;
758	free_req (prv);
759	}
760
761	ress = rese = 0;
762		1412
763	close (respipe [0]);
764	close (respipe [1]);
765	create_pipe ();	1413	create_respipe ();
766		1414
767	atfork_parent ();	1415	atfork_parent ();
768	}	1416	}
769		1417
770	#define dREQ \	1418	#define dREQ \
771	aio_req req; \	1419	aio_req req; \
		1420	int req_pri = next_pri; \
		1421	next_pri = DEFAULT_PRI + PRI_BIAS; \
772	\	1422	\
773	if (SvOK (callback) && !SvROK (callback)) \	1423	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \	1424	croak ("callback must be undef or of reference type"); \
775	\	1425	\
776	Newz (0, req, 1, aio_cb); \	1426	Newz (0, req, 1, aio_cb); \
777	if (!req) \	1427	if (!req) \
778	croak ("out of memory during aio_req allocation"); \	1428	croak ("out of memory during aio_req allocation"); \
779	\	1429	\
780	req->callback = newSVsv (callback);	1430	req->callback = newSVsv (callback); \
		1431	req->pri = req_pri
		1432
		1433	#define REQ_SEND \
		1434	req_send (req); \
		1435	\
		1436	if (GIMME_V != G_VOID) \
		1437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
781		1438
782	MODULE = IO::AIO PACKAGE = IO::AIO	1439	MODULE = IO::AIO PACKAGE = IO::AIO
783		1440
784	PROTOTYPES: ENABLE	1441	PROTOTYPES: ENABLE
785		1442
786	BOOT:	1443	BOOT:
787	{	1444	{
788	HV *stash = gv_stashpv ("IO::AIO", 1);	1445	stash = gv_stashpv ("IO::AIO", 1);
		1446
789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1452	#ifdef _WIN32
		1453	X_MUTEX_CHECK (wrklock);
		1454	X_MUTEX_CHECK (reslock);
		1455	X_MUTEX_CHECK (reqlock);
		1456	X_MUTEX_CHECK (reqwait);
		1457	X_MUTEX_CHECK (preadwritelock);
		1458	X_MUTEX_CHECK (readdirlock);
792		1459
793	create_pipe ();	1460	X_COND_CHECK (reqwait);
		1461	#else
		1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1464	#endif
		1465
		1466	create_respipe ();
		1467
794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
795	}	1469	}
796		1470
797	void	1471	void
798	min_parallel (nthreads)	1472	max_poll_reqs (int nreqs)
799	int nthreads
800	PROTOTYPE: $	1473	PROTOTYPE: $
		1474	CODE:
		1475	max_poll_reqs = nreqs;
801		1476
802	void	1477	void
803	max_parallel (nthreads)	1478	max_poll_time (double nseconds)
804	int nthreads
805	PROTOTYPE: $	1479	PROTOTYPE: $
		1480	CODE:
		1481	max_poll_time = nseconds * AIO_TICKS;
		1482
		1483	void
		1484	min_parallel (int nthreads)
		1485	PROTOTYPE: $
		1486
		1487	void
		1488	max_parallel (int nthreads)
		1489	PROTOTYPE: $
		1490
		1491	void
		1492	max_idle (int nthreads)
		1493	PROTOTYPE: $
		1494	CODE:
		1495	set_max_idle (nthreads);
806		1496
807	int	1497	int
808	max_outstanding (nreqs)	1498	max_outstanding (int maxreqs)
809	int nreqs	1499	PROTOTYPE: $
810	PROTOTYPE: $
811	CODE:	1500	CODE:
812	RETVAL = max_outstanding;	1501	RETVAL = max_outstanding;
813	max_outstanding = nreqs;	1502	max_outstanding = maxreqs;
		1503	OUTPUT:
		1504	RETVAL
814		1505
815	void	1506	void
816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
817	SV * pathname
818	int flags
819	int mode
820	SV * callback
821	PROTOTYPE: $$$;$	1508	PROTOTYPE: $$$;$
822	CODE:	1509	PPCODE:
823	{	1510	{
824	dREQ;	1511	dREQ;
825		1512
826	req->type = REQ_OPEN;	1513	req->type = REQ_OPEN;
827	req->data = newSVsv (pathname);	1514	req->sv1 = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	1515	req->ptr1 = SvPVbyte_nolen (req->sv1);
829	req->fd = flags;	1516	req->int1 = flags;
830	req->mode = mode;	1517	req->mode = mode;
831		1518
832	send_req (req);	1519	REQ_SEND;
833	}	1520	}
834		1521
835	void	1522	void
836	aio_close (fh,callback=&PL_sv_undef)	1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
837	SV * fh
838	SV * callback
839	PROTOTYPE: $;$	1524	PROTOTYPE: $;$
840	ALIAS:	1525	ALIAS:
841	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1526	aio_fsync = REQ_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1527	aio_fdatasync = REQ_FDATASYNC
844	CODE:	1528	PPCODE:
845	{	1529	{
846	dREQ;	1530	dREQ;
847		1531
848	req->type = ix;	1532	req->type = ix;
849	req->fh = newSVsv (fh);	1533	req->sv1 = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
851		1535
852	send_req (req);	1536	REQ_SEND (req);
853	}	1537	}
854		1538
		1539	int
		1540	_dup (int fd)
		1541	PROTOTYPE: $
		1542	CODE:
		1543	RETVAL = dup (fd);
		1544	OUTPUT:
		1545	RETVAL
		1546
855	void	1547	void
		1548	_aio_close (int fd, SV *callback=&PL_sv_undef)
		1549	PROTOTYPE: $;$
		1550	PPCODE:
		1551	{
		1552	dREQ;
		1553
		1554	req->type = REQ_CLOSE;
		1555	req->int1 = fd;
		1556
		1557	REQ_SEND (req);
		1558	}
		1559
		1560	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
857	SV * fh
858	UV offset
859	UV length
860	SV * data
861	UV dataoffset
862	SV * callback
863	ALIAS:	1562	ALIAS:
864	aio_read = REQ_READ	1563	aio_read = REQ_READ
865	aio_write = REQ_WRITE	1564	aio_write = REQ_WRITE
866	PROTOTYPE: $$$$$;$	1565	PROTOTYPE: $$$$$;$
867	CODE:	1566	PPCODE:
868	{	1567	{
869	aio_req req;
870	STRLEN svlen;	1568	STRLEN svlen;
871	char *svptr = SvPVbyte (data, svlen);	1569	char *svptr = SvPVbyte (data, svlen);
		1570	UV len = SvUV (length);
872		1571
873	SvUPGRADE (data, SVt_PV);	1572	SvUPGRADE (data, SVt_PV);
874	SvPOK_on (data);	1573	SvPOK_on (data);
875		1574
876	if (dataoffset < 0)	1575	if (dataoffset < 0)
877	dataoffset += svlen;	1576	dataoffset += svlen;
878		1577
879	if (dataoffset < 0 || dataoffset > svlen)	1578	if (dataoffset < 0 || dataoffset > svlen)
880	croak ("data offset outside of string");	1579	croak ("dataoffset outside of data scalar");
881		1580
882	if (ix == REQ_WRITE)	1581	if (ix == REQ_WRITE)
883	{	1582	{
884	/* write: check length and adjust. */	1583	/* write: check length and adjust. */
885	if (length < 0 || length + dataoffset > svlen)	1584	if (!SvOK (length) || len + dataoffset > svlen)
886	length = svlen - dataoffset;	1585	len = svlen - dataoffset;
887	}	1586	}
888	else	1587	else
889	{	1588	{
890	/* read: grow scalar as necessary */	1589	/* read: grow scalar as necessary */
891	svptr = SvGROW (data, length + dataoffset);	1590	svptr = SvGROW (data, len + dataoffset + 1);
892	}	1591	}
893		1592
894	if (length < 0)	1593	if (len < 0)
895	croak ("length must not be negative");	1594	croak ("length must not be negative");
896		1595
897	{	1596	{
898	dREQ;	1597	dREQ;
899		1598
900	req->type = ix;	1599	req->type = ix;
901	req->fh = newSVsv (fh);	1600	req->sv1 = newSVsv (fh);
902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
903	: IoOFP (sv_2io (fh)));	1602	: IoOFP (sv_2io (fh)));
		1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904	req->offset = offset;	1604	req->size = len;
905	req->length = length;
906	req->data = SvREFCNT_inc (data);	1605	req->sv2 = SvREFCNT_inc (data);
907	req->dataptr = (char *)svptr + dataoffset;	1606	req->ptr1 = (char *)svptr + dataoffset;
		1607	req->stroffset = dataoffset;
908		1608
909	if (!SvREADONLY (data))	1609	if (!SvREADONLY (data))
910	{	1610	{
911	SvREADONLY_on (data);	1611	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1612	req->flags |= FLAG_SV2_RO_OFF;
913	}	1613	}
914		1614
915	send_req (req);	1615	REQ_SEND;
916	}	1616	}
917	}	1617	}
918		1618
919	void	1619	void
		1620	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1621	PROTOTYPE: $$;$
		1622	PPCODE:
		1623	{
		1624	SV *data;
		1625	dREQ;
		1626
		1627	data = newSV (NAME_MAX);
		1628	SvPOK_on (data);
		1629
		1630	req->type = REQ_READLINK;
		1631	req->sv1 = newSVsv (path);
		1632	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1633	req->sv2 = data;
		1634	req->ptr1 = SvPVbyte_nolen (data);
		1635
		1636	REQ_SEND;
		1637	}
		1638
		1639	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
921	SV * out_fh
922	SV * in_fh
923	UV in_offset
924	UV length
925	SV * callback
926	PROTOTYPE: $$$$;$	1641	PROTOTYPE: $$$$;$
927	CODE:	1642	PPCODE:
928	{	1643	{
929	dREQ;	1644	dREQ;
930		1645
931	req->type = REQ_SENDFILE;	1646	req->type = REQ_SENDFILE;
932	req->fh = newSVsv (out_fh);	1647	req->sv1 = newSVsv (out_fh);
933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
934	req->fh2 = newSVsv (in_fh);	1649	req->sv2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;	1651	req->offs = SvVAL64 (in_offset);
937	req->length = length;	1652	req->size = length;
938		1653
939	send_req (req);	1654	REQ_SEND;
940	}	1655	}
941		1656
942	void	1657	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
944	SV * fh
945	UV offset
946	IV length
947	SV * callback
948	PROTOTYPE: $$$;$	1659	PROTOTYPE: $$$;$
949	CODE:	1660	PPCODE:
950	{	1661	{
951	dREQ;	1662	dREQ;
952		1663
953	req->type = REQ_READAHEAD;	1664	req->type = REQ_READAHEAD;
954	req->fh = newSVsv (fh);	1665	req->sv1 = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;	1667	req->offs = SvVAL64 (offset);
957	req->length = length;	1668	req->size = length;
958		1669
959	send_req (req);	1670	REQ_SEND;
960	}	1671	}
961		1672
962	void	1673	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
964	SV * fh_or_path
965	SV * callback
966	ALIAS:	1675	ALIAS:
967	aio_stat = REQ_STAT	1676	aio_stat = REQ_STAT
968	aio_lstat = REQ_LSTAT	1677	aio_lstat = REQ_LSTAT
969	CODE:	1678	PPCODE:
970	{	1679	{
971	dREQ;	1680	dREQ;
972		1681
973	New (0, req->statdata, 1, Stat_t);	1682	req->ptr2 = malloc (sizeof (Stat_t));
974	if (!req->statdata)	1683	if (!req->ptr2)
975	{	1684	{
976	free_req (req);	1685	req_destroy (req);
977	croak ("out of memory during aio_req->statdata allocation");	1686	croak ("out of memory during aio_stat statdata allocation");
978	}	1687	}
		1688
		1689	req->flags |= FLAG_PTR2_FREE;
		1690	req->sv1 = newSVsv (fh_or_path);
979		1691
980	if (SvPOK (fh_or_path))	1692	if (SvPOK (fh_or_path))
981	{	1693	{
982	req->type = ix;	1694	req->type = ix;
983	req->data = newSVsv (fh_or_path);
984	req->dataptr = SvPVbyte_nolen (req->data);	1695	req->ptr1 = SvPVbyte_nolen (req->sv1);
985	}	1696	}
986	else	1697	else
987	{	1698	{
988	req->type = REQ_FSTAT;	1699	req->type = REQ_FSTAT;
989	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
991	}	1701	}
992		1702
993	send_req (req);	1703	REQ_SEND;
994	}	1704	}
995		1705
996	void	1706	void
		1707	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
		1711
		1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1714	req->sv1 = newSVsv (fh_or_path);
		1715
		1716	if (SvPOK (fh_or_path))
		1717	{
		1718	req->type = REQ_UTIME;
		1719	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1720	}
		1721	else
		1722	{
		1723	req->type = REQ_FUTIME;
		1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1725	}
		1726
		1727	REQ_SEND;
		1728	}
		1729
		1730	void
		1731	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1732	PPCODE:
		1733	{
		1734	dREQ;
		1735
		1736	req->sv1 = newSVsv (fh_or_path);
		1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1738
		1739	if (SvPOK (fh_or_path))
		1740	{
		1741	req->type = REQ_TRUNCATE;
		1742	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1743	}
		1744	else
		1745	{
		1746	req->type = REQ_FTRUNCATE;
		1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1748	}
		1749
		1750	REQ_SEND;
		1751	}
		1752
		1753	void
		1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1755	PPCODE:
		1756	{
		1757	dREQ;
		1758
		1759	req->mode = mode;
		1760	req->sv1 = newSVsv (fh_or_path);
		1761
		1762	if (SvPOK (fh_or_path))
		1763	{
		1764	req->type = REQ_CHMOD;
		1765	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1766	}
		1767	else
		1768	{
		1769	req->type = REQ_FCHMOD;
		1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1771	}
		1772
		1773	REQ_SEND;
		1774	}
		1775
		1776	void
		1777	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1778	PPCODE:
		1779	{
		1780	dREQ;
		1781
		1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1784	req->sv1 = newSVsv (fh_or_path);
		1785
		1786	if (SvPOK (fh_or_path))
		1787	{
		1788	req->type = REQ_CHOWN;
		1789	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1790	}
		1791	else
		1792	{
		1793	req->type = REQ_FCHOWN;
		1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1795	}
		1796
		1797	REQ_SEND;
		1798	}
		1799
		1800	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
998	SV * pathname
999	SV * callback
1000	ALIAS:	1802	ALIAS:
1001	aio_unlink = REQ_UNLINK	1803	aio_unlink = REQ_UNLINK
1002	aio_rmdir = REQ_RMDIR	1804	aio_rmdir = REQ_RMDIR
1003	aio_readdir = REQ_READDIR	1805	aio_readdir = REQ_READDIR
1004	CODE:	1806	PPCODE:
1005	{	1807	{
1006	dREQ;	1808	dREQ;
1007		1809
1008	req->type = ix;	1810	req->type = ix;
1009	req->data = newSVsv (pathname);	1811	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1813
		1814	REQ_SEND;
		1815	}
		1816
		1817	void
		1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1819	PPCODE:
		1820	{
		1821	dREQ;
1011		1822
1012	send_req (req);	1823	req->type = REQ_MKDIR;
1013	}	1824	req->sv1 = newSVsv (pathname);
		1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1826	req->mode = mode;
1014		1827
		1828	REQ_SEND;
		1829	}
		1830
1015	void	1831	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1017	SV * oldpath
1018	SV * newpath
1019	SV * callback
1020	ALIAS:	1833	ALIAS:
1021	aio_link = REQ_LINK	1834	aio_link = REQ_LINK
1022	aio_symlink = REQ_SYMLINK	1835	aio_symlink = REQ_SYMLINK
1023	aio_rename = REQ_RENAME	1836	aio_rename = REQ_RENAME
1024	CODE:	1837	PPCODE:
1025	{	1838	{
1026	dREQ;	1839	dREQ;
1027		1840
1028	req->type = ix;	1841	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1842	req->sv2 = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1843	req->ptr2 = SvPVbyte_nolen (req->sv2);
1031	req->data = newSVsv (newpath);	1844	req->sv1 = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1033		1846
1034	send_req (req);	1847	REQ_SEND;
1035	}	1848	}
1036		1849
1037	#if 0
1038
1039	# undocumented, because it does not cancel active requests
1040	void	1850	void
1041	cancel_most_requests ()	1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1852	PPCODE:
		1853	{
		1854	dREQ;
		1855
		1856	req->type = REQ_MKNOD;
		1857	req->sv1 = newSVsv (pathname);
		1858	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1859	req->mode = (mode_t)mode;
		1860	req->offs = dev;
		1861
		1862	REQ_SEND;
		1863	}
		1864
		1865	void
		1866	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1867	PPCODE:
		1868	{
		1869	dREQ;
		1870
		1871	req->type = REQ_BUSY;
		1872	req->nv1 = delay < 0. ? 0. : delay;
		1873
		1874	REQ_SEND;
		1875	}
		1876
		1877	void
		1878	aio_group (SV *callback=&PL_sv_undef)
1042	PROTOTYPE:	1879	PROTOTYPE: ;$
1043	CODE:	1880	PPCODE:
1044	{	1881	{
1045	aio_req *req;	1882	dREQ;
1046		1883
1047	pthread_mutex_lock (&reqlock);	1884	req->type = REQ_GROUP;
1048	for (req = reqs; req; req = req->next)
1049	req->flags |= 1;
1050	pthread_mutex_unlock (&reqlock);
1051		1885
1052	pthread_mutex_lock (&reslock);	1886	req_send (req);
1053	for (req = ress; req; req = req->next)	1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1054	req->flags |= 1;
1055	pthread_mutex_unlock (&reslock);
1056	}	1888	}
1057		1889
1058	#endif	1890	void
		1891	aio_nop (SV *callback=&PL_sv_undef)
		1892	ALIAS:
		1893	aio_nop = REQ_NOP
		1894	aio_sync = REQ_SYNC
		1895	PPCODE:
		1896	{
		1897	dREQ;
		1898
		1899	req->type = ix;
		1900
		1901	REQ_SEND;
		1902	}
		1903
		1904	int
		1905	aioreq_pri (int pri = 0)
		1906	PROTOTYPE: ;$
		1907	CODE:
		1908	RETVAL = next_pri - PRI_BIAS;
		1909	if (items > 0)
		1910	{
		1911	if (pri < PRI_MIN) pri = PRI_MIN;
		1912	if (pri > PRI_MAX) pri = PRI_MAX;
		1913	next_pri = pri + PRI_BIAS;
		1914	}
		1915	OUTPUT:
		1916	RETVAL
		1917
		1918	void
		1919	aioreq_nice (int nice = 0)
		1920	CODE:
		1921	nice = next_pri - nice;
		1922	if (nice < PRI_MIN) nice = PRI_MIN;
		1923	if (nice > PRI_MAX) nice = PRI_MAX;
		1924	next_pri = nice + PRI_BIAS;
1059		1925
1060	void	1926	void
1061	flush ()	1927	flush ()
1062	PROTOTYPE:	1928	PROTOTYPE:
1063	CODE:	1929	CODE:
…		…
1065	{	1931	{
1066	poll_wait ();	1932	poll_wait ();
1067	poll_cb ();	1933	poll_cb ();
1068	}	1934	}
1069		1935
1070	void	1936	int
1071	poll()	1937	poll()
1072	PROTOTYPE:	1938	PROTOTYPE:
1073	CODE:	1939	CODE:
1074	if (nreqs)
1075	{
1076	poll_wait ();	1940	poll_wait ();
1077	poll_cb ();	1941	RETVAL = poll_cb ();
1078	}	1942	OUTPUT:
		1943	RETVAL
1079		1944
1080	int	1945	int
1081	poll_fileno()	1946	poll_fileno()
1082	PROTOTYPE:	1947	PROTOTYPE:
1083	CODE:	1948	CODE:
…		…
1095		1960
1096	void	1961	void
1097	poll_wait()	1962	poll_wait()
1098	PROTOTYPE:	1963	PROTOTYPE:
1099	CODE:	1964	CODE:
1100	if (nreqs)
1101	poll_wait ();	1965	poll_wait ();
		1966
		1967	void
		1968	setsig (int signum = SIGIO)
		1969	PROTOTYPE: ;$
		1970	CODE:
		1971	{
		1972	if (block_sig_level)
		1973	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1974
		1975	X_LOCK (reslock);
		1976	main_tid = pthread_self ();
		1977	main_sig = signum;
		1978	X_UNLOCK (reslock);
		1979
		1980	if (main_sig && npending)
		1981	pthread_kill (main_tid, main_sig);
		1982	}
		1983
		1984	void
		1985	aio_block (SV *cb)
		1986	PROTOTYPE: &
		1987	PPCODE:
		1988	{
		1989	int count;
		1990
		1991	block_sig ();
		1992	PUSHMARK (SP);
		1993	PUTBACK;
		1994	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1995	unblock_sig ();
		1996
		1997	if (SvTRUE (ERRSV))
		1998	croak (0);
		1999
		2000	XSRETURN (count);
		2001	}
1102		2002
1103	int	2003	int
1104	nreqs()	2004	nreqs()
1105	PROTOTYPE:	2005	PROTOTYPE:
1106	CODE:	2006	CODE:
1107	RETVAL = nreqs;	2007	RETVAL = nreqs;
1108	OUTPUT:	2008	OUTPUT:
1109	RETVAL	2009	RETVAL
1110		2010
		2011	int
		2012	nready()
		2013	PROTOTYPE:
		2014	CODE:
		2015	RETVAL = get_nready ();
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	npending()
		2021	PROTOTYPE:
		2022	CODE:
		2023	RETVAL = get_npending ();
		2024	OUTPUT:
		2025	RETVAL
		2026
		2027	int
		2028	nthreads()
		2029	PROTOTYPE:
		2030	CODE:
		2031	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2032	RETVAL = started;
		2033	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2034	OUTPUT:
		2035	RETVAL
		2036
		2037	PROTOTYPES: DISABLE
		2038
		2039	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2040
		2041	void
		2042	cancel (aio_req_ornot req)
		2043	CODE:
		2044	req_cancel (req);
		2045
		2046	void
		2047	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		2048	CODE:
		2049	SvREFCNT_dec (req->callback);
		2050	req->callback = newSVsv (callback);
		2051
		2052	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2053
		2054	void
		2055	add (aio_req grp, ...)
		2056	PPCODE:
		2057	{
		2058	int i;
		2059	aio_req req;
		2060
		2061	if (main_sig && !block_sig_level)
		2062	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2063
		2064	if (grp->int1 == 2)
		2065	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2066
		2067	for (i = 1; i < items; ++i )
		2068	{
		2069	if (GIMME_V != G_VOID)
		2070	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2071
		2072	req = SvAIO_REQ (ST (i));
		2073
		2074	if (req)
		2075	{
		2076	++grp->size;
		2077	req->grp = grp;
		2078
		2079	req->grp_prev = 0;
		2080	req->grp_next = grp->grp_first;
		2081
		2082	if (grp->grp_first)
		2083	grp->grp_first->grp_prev = req;
		2084
		2085	grp->grp_first = req;
		2086	}
		2087	}
		2088	}
		2089
		2090	void
		2091	cancel_subs (aio_req_ornot req)
		2092	CODE:
		2093	req_cancel_subs (req);
		2094
		2095	void
		2096	result (aio_req grp, ...)
		2097	CODE:
		2098	{
		2099	int i;
		2100	AV *av;
		2101
		2102	grp->errorno = errno;
		2103
		2104	av = newAV ();
		2105
		2106	for (i = 1; i < items; ++i )
		2107	av_push (av, newSVsv (ST (i)));
		2108
		2109	SvREFCNT_dec (grp->sv1);
		2110	grp->sv1 = (SV *)av;
		2111	}
		2112
		2113	void
		2114	errno (aio_req grp, int errorno = errno)
		2115	CODE:
		2116	grp->errorno = errorno;
		2117
		2118	void
		2119	limit (aio_req grp, int limit)
		2120	CODE:
		2121	grp->int2 = limit;
		2122	aio_grp_feed (grp);
		2123
		2124	void
		2125	feed (aio_req grp, SV *callback=&PL_sv_undef)
		2126	CODE:
		2127	{
		2128	SvREFCNT_dec (grp->sv2);
		2129	grp->sv2 = newSVsv (callback);
		2130
		2131	if (grp->int2 <= 0)
		2132	grp->int2 = 2;
		2133
		2134	aio_grp_feed (grp);
		2135	}
		2136

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