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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.111 by root, Sun Mar 30 06:31:49 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>
		11	#include <errno.h>
13	#include <sys/types.h>	12	#include <sys/types.h>
14	#include <sys/stat.h>	13	#include <sys/stat.h>
15	#include <limits.h>	14	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	15	#include <fcntl.h>
18	#include <signal.h>
19	#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
20		68
21	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
22	# if __linux	70	# if __linux
23	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
24	# elif __freebsd	72	# elif __freebsd
…		…
31	# else	79	# else
32	# error sendfile support requested but not available	80	# error sendfile support requested but not available
33	# endif	81	# endif
34	#endif	82	#endif
35		83
36	#if __ia64	84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
		87	/* used for struct dirent, AIX doesn't provide it */
		88	#ifndef NAME_MAX
		89	# define NAME_MAX 4096
		90	#endif
		91
		92	/* buffer size for various temporary buffers */
37	# 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
38	#else	98	#else
39	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
40	#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 */
41		113
42	enum {	114	enum {
43	REQ_QUIT,	115	REQ_QUIT,
44	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
46	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
47	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,
48	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
50	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
51	REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
		128	REQ_GROUP, REQ_NOP,
		129	REQ_BUSY,
52	};	130	};
53		131
		132	#define AIO_REQ_KLASS "IO::AIO::REQ"
		133	#define AIO_GRP_KLASS "IO::AIO::GRP"
		134
54	typedef struct aio_cb {	135	typedef struct aio_cb
		136	{
55	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
56		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;
57	int type;	148	int type;
58		149	int int1, int2, int3;
59	/* should receive a cleanup, with unions */	150	int errorno;
60	int fd, fd2;
61	off_t offset;
62	size_t length;
63	ssize_t result;
64	mode_t mode; /* open */	151	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70		152
71	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;
72	} aio_cb;	158	} aio_cb;
73		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
74	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
		167	typedef aio_cb *aio_req_ornot;
75		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
76	static int started, wanted;	226	static unsigned int started, idle, wanted;
77	static volatile int nreqs;
78	static int max_outstanding = 1<<30;
79	static int respipe [2];
80		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
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	273	static mutex_t reslock = X_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	274	static mutex_t reqlock = X_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
84		276
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	277	#if WORDACCESS_UNSAFE
86	static volatile aio_req ress, rese; /* queue start, queue end */
87		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);
88	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)
89	{	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
90	if (req->data)	595	if (req->grp)
91	SvREFCNT_dec (req->data);	596	{
		597	aio_req grp = req->grp;
92		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	{
93	if (req->fh)	614	if (req->self)
		615	{
		616	sv_unmagic (req->self, PERL_MAGIC_ext);
94	SvREFCNT_dec (req->fh);	617	SvREFCNT_dec (req->self);
		618	}
95		619
96	if (req->fh2)	620	SvREFCNT_dec (req->sv1);
97	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
98
99	if (req->statdata)
100	Safefree (req->statdata);
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
104		623
105	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
106	free (req->data2ptr);	625	free (req->ptr2);
107		626
108	Safefree (req);	627	Safefree (req);
109	}	628	}
110		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
111	static void	657	static void
112	poll_wait ()	658	create_respipe (void)
113	{	659	{
114	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)
115	{	673	{
116	fd_set rfd;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
117	FD_ZERO(&rfd);	675	croak ("unable to initialize result pipe(2)");
118	FD_SET(respipe [0], &rfd);
119		676
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	677	respipe_close (respipe [0]);
		678	respipe [0] = old_readfd;
121	}	679	}
122	}
123		680
124	static int	681	#ifdef _WIN32
125	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)
126	{	814	{
127	dSP;	815	dSP;
128	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
129	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
130	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
131		826
132	for (;;)	827	for (;;)
133	{	828	{
134	pthread_mutex_lock (&reslock);	829	for (;;)
135	req = ress;
136
137	if (req)
138	{	830	{
139	ress = req->next;	831	maybe_start_thread ();
140		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
141	if (!ress)	836	if (req)
142	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
143	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
144	char buf [32];	843	char buf [4];
145	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
146	;	846	}
147
148	rese = 0;
149	}	847	}
150	}
151		848
152	pthread_mutex_unlock (&reslock);	849	X_UNLOCK (reslock);
153		850
154	if (!req)	851	if (!req)
155	break;	852	break;
156		853
157	nreqs--;	854	--nreqs;
158		855
159	if (req->type == REQ_QUIT)
160	started--;
161	else
162	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)	856	if (req->type == REQ_GROUP && req->size)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);
171
172	if (req->statdata)
173	{	857	{
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	858	req->int1 = 1; /* mark request as delayed */
175	PL_laststatval = req->result;	859	continue;
176	PL_statcache = *(req->statdata);
177	}
178
179	ENTER;
180	PUSHMARK (SP);
181
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}	860	}
205	else	861	else
206	{	862	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));	863	if (!req_invoke (req))
208
209	if (req->type == REQ_OPEN)
210	{	864	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);	865	req_destroy (req);
		866	unblock_sig ();
234	croak (0);	867	croak (0);
235	}	868	}
		869
		870	count++;
236	}	871	}
237		872
238	LEAVE;	873	req_destroy (req);
239		874
240	errno = errorno;	875	if (maxreqs && !--maxreqs)
241	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	}
242	}	885	}
243		886
244	free_req (req);	887	if (nreqs <= max_outstanding)
		888	break;
		889
		890	poll_wait ();
		891
		892	++maxreqs;
245	}	893	}
246		894
		895	unblock_sig ();
247	return count;	896	return count;
248	}
249
250	static void *aio_proc(void *arg);
251
252	static void
253	start_thread (void)
254	{
255	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;
258
259	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262
263	sigfillset (&fullsigset);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
267	started++;
268
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);
270	}
271
272	static void
273	send_req (aio_req req)
274	{
275	while (started < wanted && nreqs >= started)
276	start_thread ();
277
278	nreqs++;
279
280	pthread_mutex_lock (&reqlock);
281
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}
306
307	static void
308	end_thread (void)
309	{
310	aio_req req;
311	Newz (0, req, 1, aio_cb);
312	req->type = REQ_QUIT;
313
314	send_req (req);
315	}
316
317	static void min_parallel (int nthreads)
318	{
319	if (wanted < nthreads)
320	wanted = nthreads;
321	}
322
323	static void max_parallel (int nthreads)
324	{
325	int cur = started;
326
327	if (wanted > nthreads)
328	wanted = nthreads;
329
330	while (cur > wanted)
331	{
332	end_thread ();
333	cur--;
334	}
335
336	while (started > wanted)
337	{
338	poll_wait ();
339	poll_cb ();
340	}
341	}
342
343	static void create_pipe ()
344	{
345	if (pipe (respipe))
346	croak ("unable to initialize result pipe");
347
348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
349	croak ("cannot set result pipe to nonblocking mode");
350
351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
352	croak ("cannot set result pipe to nonblocking mode");
353	}	897	}
354		898
355	/*****************************************************************************/	899	/*****************************************************************************/
356	/* work around various missing functions */	900	/* work around various missing functions */
357		901
…		…
362	/*	906	/*
363	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
364	* 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,
365	* but that's your problem, not mine.	909	* but that's your problem, not mine.
366	*/	910	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
368		912
369	static ssize_t	913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{	914	{
372	ssize_t res;	915	ssize_t res;
373	off_t ooffset;	916	off_t ooffset;
374		917
375	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);	921	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
381		924
382	return res;	925	return res;
383	}	926	}
384		927
385	static ssize_t
386	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)
387	{	929	{
388	ssize_t res;	930	ssize_t res;
389	off_t ooffset;	931	off_t ooffset;
390		932
391	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);	936	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
397		939
398	return res;	940	return res;
399	}	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
400	#endif	970	#endif
401		971
402	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
403	# define fdatasync fsync	973	# define fdatasync fsync
404	#endif	974	#endif
405		975
406	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
408		978
409	static ssize_t	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
410	readahead (int fd, off_t offset, size_t count)
411	{	980	{
412	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
413		983
414	while (count > 0)	984	while (todo > 0)
415	{	985	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
417		987
418	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
419	offset += len;	989	offset += len;
420	count -= len;	990	todo -= len;
421	}	991	}
422		992
423	errno = 0;	993	errno = 0;
		994	return count;
424	}	995	}
		996
425	#endif	997	#endif
426		998
427	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
429		1001
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
431		1003
432	static int	1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{	1005	{
435	struct dirent *e;	1006	X_DIRENT *e;
436	int errorno;	1007	int errorno;
437		1008
438	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
439		1010
440	e = readdir (dirp);	1011	e = readdir (dirp);
441	errorno = errno;	1012	errorno = errno;
442		1013
443	if (e)	1014	if (e)
…		…
446	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
447	}	1018	}
448	else	1019	else
449	*res = 0;	1020	*res = 0;
450		1021
451	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
452		1023
453	errno = errorno;	1024	errno = errorno;
454	return e ? 0 : -1;	1025	return e ? 0 : -1;
455	}	1026	}
456	#endif	1027	#endif
457		1028
458	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
459	static ssize_t
460	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)
461	{	1031	{
462	ssize_t res;	1032	ssize_t res;
463		1033
464	if (!count)	1034	if (!count)
465	return 0;	1035	return 0;
…		…
476	{	1046	{
477	off_t sbytes;	1047	off_t sbytes;
478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479		1049
480	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
482	res = sbytes;	1052	res = sbytes;
483	}	1053	}
484		1054
485	# elif __hpux	1055	# elif __hpux
486	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
499		1069
500	if (res < 0 && sbytes)	1070	if (res < 0 && sbytes)
501	res = sbytes;	1071	res = sbytes;
502	}	1072	}
503		1073
		1074	# endif
504	# else	1075	#else
505	res = -1;	1076	res = -1;
506	errno = ENOSYS;	1077	errno = ENOSYS;
507	# endif
508	#endif	1078	#endif
509		1079
510	if (res < 0	1080	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris	1082	#if __solaris
…		…
514	#endif	1084	#endif
515	)	1085	)
516	)	1086	)
517	{	1087	{
518	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	1089	dBUF;
		1090
520	res = 0;	1091	res = 0;
521		1092
522	for (;;)	1093	while (count)
523	{	1094	{
524	ssize_t cnt;	1095	ssize_t cnt;
525		1096
526	cnt = pread (ifd, buf, 4096, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		1098
528	if (cnt <= 0)	1099	if (cnt <= 0)
529	{	1100	{
530	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
531	break;	1102	break;
532	}	1103	}
533		1104
534	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
535		1106
536	if (cnt <= 0)	1107	if (cnt <= 0)
537	{	1108	{
538	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
539	break;	1110	break;
540	}	1111	}
541		1112
542	offset += cnt;	1113	offset += cnt;
543	res += cnt;	1114	res += cnt;
		1115	count -= cnt;
544	}	1116	}
545	}	1117	}
546		1118
547	return res;	1119	return res;
548	}	1120	}
549		1121
550	/* read a full directory */	1122	/* read a full directory */
551	static int	1123	static void scandir_ (aio_req req, worker *self)
552	scandir_ (const char *path, void **namesp)
553	{	1124	{
554	DIR *dirp = opendir (path);	1125	DIR *dirp;
555	union	1126	union
556	{	1127	{
557	struct dirent d;	1128	X_DIRENT d;
558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
559	} u;	1130	} *u;
560	struct dirent *entp;	1131	X_DIRENT *entp;
561	char *name, *names;	1132	char *name, *names;
562	int memlen = 4096;	1133	int memlen = 4096;
563	int memofs = 0;	1134	int memofs = 0;
564	int res = 0;	1135	int res = 0;
565	int errorno;
566		1136
567	if (!dirp)	1137	X_LOCK (wrklock);
568	return -1;	1138	self->dirp = dirp = opendir (req->ptr1);
569		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
570	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	{//D
		1188	aio_req req;
		1189	struct timespec ts;
		1190	worker *self = (worker *)thr_arg;
		1191
		1192	/* try to distribute timeouts somewhat randomly */
		1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
571		1194
572	for (;;)	1195	for (;;)
573	{	1196	{
574	errno = 0, readdir_r (dirp, &u.d, &entp);	1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
575		1198
576	if (!entp)	1199	X_LOCK (reqlock);
577	break;
578
579	name = entp->d_name;
580
581	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
582	{
583	int len = strlen (name) + 1;
584
585	res++;
586
587	while (memofs + len > memlen)
588	{
589	memlen *= 2;
590	names = realloc (names, memlen);
591	if (!names)
592	break;
593	}
594
595	memcpy (names + memofs, name, len);
596	memofs += len;
597	}
598	}
599
600	errorno = errno;
601	closedir (dirp);
602
603	if (errorno)
604	{
605	free (names);
606	errno = errorno;
607	res = -1;
608	}
609
610	*namesp = (void *)names;
611	return res;
612	}
613
614	/*****************************************************************************/
615
616	static void *
617	aio_proc (void *thr_arg)
618	{
619	aio_req req;
620	int type;
621
622	do
623	{
624	pthread_mutex_lock (&reqlock);
625		1200
626	for (;;)	1201	for (;;)
627	{	1202	{
628	req = reqs;	1203	self->req = req = reqq_shift (&req_queue);
629
630	if (reqs)
631	{
632	reqs = reqs->next;
633	if (!reqs) reqe = 0;
634	}
635		1204
636	if (req)	1205	if (req)
637	break;	1206	break;
638		1207
639	pthread_cond_wait (&reqwait, &reqlock);	1208	++idle;
		1209
		1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1211	== ETIMEDOUT)
		1212	{
		1213	if (idle > max_idle)
		1214	{
		1215	--idle;
		1216	X_UNLOCK (reqlock);
		1217	X_LOCK (wrklock);
		1218	--started;
		1219	X_UNLOCK (wrklock);
		1220	goto quit;
		1221	}
		1222
		1223	/* we are allowed to idle, so do so without any timeout */
		1224	X_COND_WAIT (reqwait, reqlock);
		1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1226	}
		1227
		1228	--idle;
640	}	1229	}
641		1230
642	pthread_mutex_unlock (&reqlock);	1231	--nready;
		1232
		1233	X_UNLOCK (reqlock);
643		1234
644	errno = 0; /* strictly unnecessary */	1235	errno = 0; /* strictly unnecessary */
645		1236
646	type = req->type;	1237	if (!(req->flags & FLAG_CANCELLED))
647
648	switch (type)	1238	switch (req->type)
		1239	{
		1240	case REQ_READ: req->result = req->offs >= 0
		1241	? pread (req->int1, req->ptr1, req->size, req->offs)
		1242	: read (req->int1, req->ptr1, req->size); break;
		1243	case REQ_WRITE: req->result = req->offs >= 0
		1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1245	: write (req->int1, req->ptr1, req->size); break;
		1246
		1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
		1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
		1249
		1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
		1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
		1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
		1253
		1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1260
		1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
		1262	case REQ_CLOSE: req->result = close (req->int1); break;
		1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
		1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
		1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
		1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
		1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
		1271
		1272	case REQ_SYNC: req->result = 0; sync (); break;
		1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
		1274	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
		1275
		1276	case REQ_READDIR: scandir_ (req, self); break;
		1277
		1278	case REQ_BUSY:
		1279	#ifdef _WIN32
		1280	Sleep (req->nv1 * 1000.);
		1281	#else
		1282	{
		1283	struct timeval tv;
		1284
		1285	tv.tv_sec = req->nv1;
		1286	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
		1287
		1288	req->result = select (0, 0, 0, 0, &tv);
		1289	}
		1290	#endif
		1291	break;
		1292
		1293	case REQ_UTIME:
		1294	case REQ_FUTIME:
		1295	{
		1296	struct timeval tv[2];
		1297	struct timeval *times;
		1298
		1299	if (req->nv1 != -1. || req->nv2 != -1.)
		1300	{
		1301	tv[0].tv_sec = req->nv1;
		1302	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1303	tv[1].tv_sec = req->nv2;
		1304	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1305
		1306	times = tv;
		1307	}
		1308	else
		1309	times = 0;
		1310
		1311
		1312	req->result = req->type == REQ_FUTIME
		1313	? futimes (req->int1, times)
		1314	: utimes (req->ptr1, times);
		1315	}
		1316
		1317	case REQ_GROUP:
		1318	case REQ_NOP:
		1319	break;
		1320
		1321	case REQ_QUIT:
		1322	goto quit;
		1323
		1324	default:
		1325	req->result = -1;
		1326	break;
		1327	}
		1328
		1329	req->errorno = errno;
		1330
		1331	X_LOCK (reslock);
		1332
		1333	++npending;
		1334
		1335	if (!reqq_push (&res_queue, req))
649	{	1336	{
650	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1337	/* write a dummy byte to the pipe so fh becomes ready */
651	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1338	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
652		1339
653	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1340	/* optionally signal the main thread asynchronously */
654	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1341	if (main_sig)
655		1342	pthread_kill (main_tid, main_sig);
656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659
660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661	case REQ_CLOSE: req->result = close (req->fd); break;
662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665
666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667	case REQ_FSYNC: req->result = fsync (req->fd); break;
668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
669
670	case REQ_QUIT:
671	break;
672
673	default:
674	req->result = ENOSYS;
675	break;
676	}	1343	}
677		1344
678	req->errorno = errno;	1345	self->req = 0;
		1346	worker_clear (self);
679		1347
680	pthread_mutex_lock (&reslock);	1348	X_UNLOCK (reslock);
681
682	req->next = 0;
683
684	if (rese)
685	{
686	rese->next = req;
687	rese = req;
688	}
689	else
690	{
691	rese = ress = req;
692
693	/* write a dummy byte to the pipe so fh becomes ready */
694	write (respipe [1], &respipe, 1);
695	}
696
697	pthread_mutex_unlock (&reslock);
698	}	1349	}
699	while (type != REQ_QUIT);	1350
		1351	quit:
		1352	X_LOCK (wrklock);
		1353	worker_free (self);
		1354	X_UNLOCK (wrklock);
700		1355
701	return 0;	1356	return 0;
		1357	}//D
702	}	1358	}
703		1359
704	/*****************************************************************************/	1360	/*****************************************************************************/
705		1361
706	static void atfork_prepare (void)	1362	static void atfork_prepare (void)
707	{	1363	{
708	pthread_mutex_lock (&reqlock);	1364	X_LOCK (wrklock);
709	pthread_mutex_lock (&reslock);	1365	X_LOCK (reqlock);
		1366	X_LOCK (reslock);
710	#if !HAVE_PREADWRITE	1367	#if !HAVE_PREADWRITE
711	pthread_mutex_lock (&preadwritelock);	1368	X_LOCK (preadwritelock);
712	#endif	1369	#endif
713	#if !HAVE_READDIR_R	1370	#if !HAVE_READDIR_R
714	pthread_mutex_lock (&readdirlock);	1371	X_LOCK (readdirlock);
715	#endif	1372	#endif
716	}	1373	}
717		1374
718	static void atfork_parent (void)	1375	static void atfork_parent (void)
719	{	1376	{
720	#if !HAVE_READDIR_R	1377	#if !HAVE_READDIR_R
721	pthread_mutex_unlock (&readdirlock);	1378	X_UNLOCK (readdirlock);
722	#endif	1379	#endif
723	#if !HAVE_PREADWRITE	1380	#if !HAVE_PREADWRITE
724	pthread_mutex_unlock (&preadwritelock);	1381	X_UNLOCK (preadwritelock);
725	#endif	1382	#endif
726	pthread_mutex_unlock (&reslock);	1383	X_UNLOCK (reslock);
727	pthread_mutex_unlock (&reqlock);	1384	X_UNLOCK (reqlock);
		1385	X_UNLOCK (wrklock);
728	}	1386	}
729		1387
730	static void atfork_child (void)	1388	static void atfork_child (void)
731	{	1389	{
732	aio_req prv;	1390	aio_req prv;
733		1391
734	started = 0;	1392	while (prv = reqq_shift (&req_queue))
		1393	req_destroy (prv);
735		1394
736	while (reqs)	1395	while (prv = reqq_shift (&res_queue))
		1396	req_destroy (prv);
		1397
		1398	while (wrk_first.next != &wrk_first)
737	{	1399	{
738	prv = reqs;	1400	worker *wrk = wrk_first.next;
739	reqs = prv->next;	1401
740	free_req (prv);	1402	if (wrk->req)
		1403	req_destroy (wrk->req);
		1404
		1405	worker_clear (wrk);
		1406	worker_free (wrk);
741	}	1407	}
742		1408
743	reqs = reqe = 0;	1409	started = 0;
744		1410	idle = 0;
745	while (ress)	1411	nreqs = 0;
746	{	1412	nready = 0;
747	prv = ress;	1413	npending = 0;
748	ress = prv->next;
749	free_req (prv);
750	}
751
752	ress = rese = 0;
753		1414
754	close (respipe [0]);
755	close (respipe [1]);
756	create_pipe ();	1415	create_respipe ();
757		1416
758	atfork_parent ();	1417	atfork_parent ();
759	}	1418	}
760		1419
761	#define dREQ \	1420	#define dREQ \
762	aio_req req; \	1421	aio_req req; \
		1422	int req_pri = next_pri; \
		1423	next_pri = DEFAULT_PRI + PRI_BIAS; \
763	\	1424	\
764	if (SvOK (callback) && !SvROK (callback)) \	1425	if (SvOK (callback) && !SvROK (callback)) \
765	croak ("clalback must be undef or of reference type"); \	1426	croak ("callback must be undef or of reference type"); \
766	\	1427	\
767	Newz (0, req, 1, aio_cb); \	1428	Newz (0, req, 1, aio_cb); \
768	if (!req) \	1429	if (!req) \
769	croak ("out of memory during aio_req allocation"); \	1430	croak ("out of memory during aio_req allocation"); \
770	\	1431	\
771	req->callback = newSVsv (callback);	1432	req->callback = newSVsv (callback); \
		1433	req->pri = req_pri
		1434
		1435	#define REQ_SEND \
		1436	req_send (req); \
		1437	\
		1438	if (GIMME_V != G_VOID) \
		1439	XPUSHs (req_sv (req, AIO_REQ_KLASS));
772		1440
773	MODULE = IO::AIO PACKAGE = IO::AIO	1441	MODULE = IO::AIO PACKAGE = IO::AIO
774		1442
775	PROTOTYPES: ENABLE	1443	PROTOTYPES: ENABLE
776		1444
777	BOOT:	1445	BOOT:
778	{	1446	{
779	create_pipe ();	1447	stash = gv_stashpv ("IO::AIO", 1);
		1448
		1449	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1450	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1451	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1452	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1453	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1454	#ifdef _WIN32
		1455	X_MUTEX_CHECK (wrklock);
		1456	X_MUTEX_CHECK (reslock);
		1457	X_MUTEX_CHECK (reqlock);
		1458	X_MUTEX_CHECK (reqwait);
		1459	X_MUTEX_CHECK (preadwritelock);
		1460	X_MUTEX_CHECK (readdirlock);
		1461
		1462	X_COND_CHECK (reqwait);
		1463	#else
		1464	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1465	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1466	#endif
		1467
		1468	create_respipe ();
		1469
780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1470	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
781	}	1471	}
782		1472
783	void	1473	void
784	min_parallel(nthreads)	1474	max_poll_reqs (int nreqs)
785	int nthreads
786	PROTOTYPE: $	1475	PROTOTYPE: $
		1476	CODE:
		1477	max_poll_reqs = nreqs;
787		1478
788	void	1479	void
789	max_parallel(nthreads)	1480	max_poll_time (double nseconds)
790	int nthreads
791	PROTOTYPE: $	1481	PROTOTYPE: $
		1482	CODE:
		1483	max_poll_time = nseconds * AIO_TICKS;
		1484
		1485	void
		1486	min_parallel (int nthreads)
		1487	PROTOTYPE: $
		1488
		1489	void
		1490	max_parallel (int nthreads)
		1491	PROTOTYPE: $
		1492
		1493	void
		1494	max_idle (int nthreads)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	set_max_idle (nthreads);
792		1498
793	int	1499	int
794	max_outstanding(nreqs)	1500	max_outstanding (int maxreqs)
795	int nreqs	1501	PROTOTYPE: $
796	PROTOTYPE: $
797	CODE:	1502	CODE:
798	RETVAL = max_outstanding;	1503	RETVAL = max_outstanding;
799	max_outstanding = nreqs;	1504	max_outstanding = maxreqs;
		1505	OUTPUT:
		1506	RETVAL
800		1507
801	void	1508	void
802	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1509	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
803	SV * pathname
804	int flags
805	int mode
806	SV * callback
807	PROTOTYPE: $$$;$	1510	PROTOTYPE: $$$;$
808	CODE:	1511	PPCODE:
809	{	1512	{
810	dREQ;	1513	dREQ;
811		1514
812	req->type = REQ_OPEN;	1515	req->type = REQ_OPEN;
813	req->data = newSVsv (pathname);	1516	req->sv1 = newSVsv (pathname);
814	req->dataptr = SvPVbyte_nolen (req->data);	1517	req->ptr1 = SvPVbyte_nolen (req->sv1);
815	req->fd = flags;	1518	req->int1 = flags;
816	req->mode = mode;	1519	req->mode = mode;
817		1520
818	send_req (req);	1521	REQ_SEND;
819	}	1522	}
820		1523
821	void	1524	void
822	aio_close(fh,callback=&PL_sv_undef)	1525	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
823	SV * fh
824	SV * callback
825	PROTOTYPE: $;$	1526	PROTOTYPE: $;$
826	ALIAS:	1527	ALIAS:
827	aio_close = REQ_CLOSE
828	aio_fsync = REQ_FSYNC	1528	aio_fsync = REQ_FSYNC
829	aio_fdatasync = REQ_FDATASYNC	1529	aio_fdatasync = REQ_FDATASYNC
830	CODE:	1530	PPCODE:
831	{	1531	{
832	dREQ;	1532	dREQ;
833		1533
834	req->type = ix;	1534	req->type = ix;
835	req->fh = newSVsv (fh);	1535	req->sv1 = newSVsv (fh);
836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1536	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
837		1537
838	send_req (req);	1538	REQ_SEND (req);
839	}	1539	}
840		1540
		1541	int
		1542	_dup (int fd)
		1543	PROTOTYPE: $
		1544	CODE:
		1545	RETVAL = dup (fd);
		1546	OUTPUT:
		1547	RETVAL
		1548
841	void	1549	void
		1550	_aio_close (int fd, SV *callback=&PL_sv_undef)
		1551	PROTOTYPE: $;$
		1552	PPCODE:
		1553	{
		1554	dREQ;
		1555
		1556	req->type = REQ_CLOSE;
		1557	req->int1 = fd;
		1558
		1559	REQ_SEND (req);
		1560	}
		1561
		1562	void
842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1563	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
843	SV * fh
844	UV offset
845	UV length
846	SV * data
847	UV dataoffset
848	SV * callback
849	ALIAS:	1564	ALIAS:
850	aio_read = REQ_READ	1565	aio_read = REQ_READ
851	aio_write = REQ_WRITE	1566	aio_write = REQ_WRITE
852	PROTOTYPE: $$$$$;$	1567	PROTOTYPE: $$$$$;$
853	CODE:	1568	PPCODE:
854	{	1569	{
855	aio_req req;
856	STRLEN svlen;	1570	STRLEN svlen;
857	char *svptr = SvPVbyte (data, svlen);	1571	char *svptr = SvPVbyte (data, svlen);
		1572	UV len = SvUV (length);
858		1573
859	SvUPGRADE (data, SVt_PV);	1574	SvUPGRADE (data, SVt_PV);
860	SvPOK_on (data);	1575	SvPOK_on (data);
861		1576
862	if (dataoffset < 0)	1577	if (dataoffset < 0)
863	dataoffset += svlen;	1578	dataoffset += svlen;
864		1579
865	if (dataoffset < 0 || dataoffset > svlen)	1580	if (dataoffset < 0 || dataoffset > svlen)
866	croak ("data offset outside of string");	1581	croak ("dataoffset outside of data scalar");
867		1582
868	if (ix == REQ_WRITE)	1583	if (ix == REQ_WRITE)
869	{	1584	{
870	/* write: check length and adjust. */	1585	/* write: check length and adjust. */
871	if (length < 0 || length + dataoffset > svlen)	1586	if (!SvOK (length) || len + dataoffset > svlen)
872	length = svlen - dataoffset;	1587	len = svlen - dataoffset;
873	}	1588	}
874	else	1589	else
875	{	1590	{
876	/* read: grow scalar as necessary */	1591	/* read: grow scalar as necessary */
877	svptr = SvGROW (data, length + dataoffset);	1592	svptr = SvGROW (data, len + dataoffset + 1);
878	}	1593	}
879		1594
880	if (length < 0)	1595	if (len < 0)
881	croak ("length must not be negative");	1596	croak ("length must not be negative");
882		1597
883	{	1598	{
884	dREQ;	1599	dREQ;
885		1600
886	req->type = ix;	1601	req->type = ix;
887	req->fh = newSVsv (fh);	1602	req->sv1 = newSVsv (fh);
888	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1603	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
889	: IoOFP (sv_2io (fh)));	1604	: IoOFP (sv_2io (fh)));
		1605	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
890	req->offset = offset;	1606	req->size = len;
891	req->length = length;
892	req->data = SvREFCNT_inc (data);	1607	req->sv2 = SvREFCNT_inc (data);
893	req->dataptr = (char *)svptr + dataoffset;	1608	req->ptr1 = (char *)svptr + dataoffset;
		1609	req->stroffset = dataoffset;
894		1610
895	if (!SvREADONLY (data))	1611	if (!SvREADONLY (data))
896	{	1612	{
897	SvREADONLY_on (data);	1613	SvREADONLY_on (data);
898	req->data2ptr = (void *)data;	1614	req->flags |= FLAG_SV2_RO_OFF;
899	}	1615	}
900		1616
901	send_req (req);	1617	REQ_SEND;
902	}	1618	}
903	}	1619	}
904		1620
905	void	1621	void
		1622	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1623	PROTOTYPE: $$;$
		1624	PPCODE:
		1625	{
		1626	SV *data;
		1627	dREQ;
		1628
		1629	data = newSV (NAME_MAX);
		1630	SvPOK_on (data);
		1631
		1632	req->type = REQ_READLINK;
		1633	req->sv1 = newSVsv (path);
		1634	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1635	req->sv2 = data;
		1636	req->ptr1 = SvPVbyte_nolen (data);
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
906	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1642	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
907	SV * out_fh
908	SV * in_fh
909	UV in_offset
910	UV length
911	SV * callback
912	PROTOTYPE: $$$$;$	1643	PROTOTYPE: $$$$;$
913	CODE:	1644	PPCODE:
914	{	1645	{
915	dREQ;	1646	dREQ;
916		1647
917	req->type = REQ_SENDFILE;	1648	req->type = REQ_SENDFILE;
918	req->fh = newSVsv (out_fh);	1649	req->sv1 = newSVsv (out_fh);
919	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1650	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
920	req->fh2 = newSVsv (in_fh);	1651	req->sv2 = newSVsv (in_fh);
921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1652	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
922	req->offset = in_offset;	1653	req->offs = SvVAL64 (in_offset);
923	req->length = length;	1654	req->size = length;
924		1655
925	send_req (req);	1656	REQ_SEND;
926	}	1657	}
927		1658
928	void	1659	void
929	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1660	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
930	SV * fh
931	UV offset
932	IV length
933	SV * callback
934	PROTOTYPE: $$$;$	1661	PROTOTYPE: $$$;$
935	CODE:	1662	PPCODE:
936	{	1663	{
937	dREQ;	1664	dREQ;
938		1665
939	req->type = REQ_READAHEAD;	1666	req->type = REQ_READAHEAD;
940	req->fh = newSVsv (fh);	1667	req->sv1 = newSVsv (fh);
941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
942	req->offset = offset;	1669	req->offs = SvVAL64 (offset);
943	req->length = length;	1670	req->size = length;
944		1671
945	send_req (req);	1672	REQ_SEND;
946	}	1673	}
947		1674
948	void	1675	void
949	aio_stat(fh_or_path,callback=&PL_sv_undef)	1676	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
950	SV * fh_or_path
951	SV * callback
952	ALIAS:	1677	ALIAS:
953	aio_stat = REQ_STAT	1678	aio_stat = REQ_STAT
954	aio_lstat = REQ_LSTAT	1679	aio_lstat = REQ_LSTAT
955	CODE:	1680	PPCODE:
956	{	1681	{
957	dREQ;	1682	dREQ;
958		1683
959	New (0, req->statdata, 1, Stat_t);	1684	req->ptr2 = malloc (sizeof (Stat_t));
960	if (!req->statdata)	1685	if (!req->ptr2)
961	{	1686	{
962	free_req (req);	1687	req_destroy (req);
963	croak ("out of memory during aio_req->statdata allocation");	1688	croak ("out of memory during aio_stat statdata allocation");
964	}	1689	}
		1690
		1691	req->flags |= FLAG_PTR2_FREE;
		1692	req->sv1 = newSVsv (fh_or_path);
965		1693
966	if (SvPOK (fh_or_path))	1694	if (SvPOK (fh_or_path))
967	{	1695	{
968	req->type = ix;	1696	req->type = ix;
969	req->data = newSVsv (fh_or_path);
970	req->dataptr = SvPVbyte_nolen (req->data);	1697	req->ptr1 = SvPVbyte_nolen (req->sv1);
971	}	1698	}
972	else	1699	else
973	{	1700	{
974	req->type = REQ_FSTAT;	1701	req->type = REQ_FSTAT;
975	req->fh = newSVsv (fh_or_path);
976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1702	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977	}	1703	}
978		1704
979	send_req (req);	1705	REQ_SEND;
980	}	1706	}
981		1707
982	void	1708	void
		1709	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1710	PPCODE:
		1711	{
		1712	dREQ;
		1713
		1714	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1715	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1716	req->sv1 = newSVsv (fh_or_path);
		1717
		1718	if (SvPOK (fh_or_path))
		1719	{
		1720	req->type = REQ_UTIME;
		1721	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1722	}
		1723	else
		1724	{
		1725	req->type = REQ_FUTIME;
		1726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1727	}
		1728
		1729	REQ_SEND;
		1730	}
		1731
		1732	void
		1733	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1734	PPCODE:
		1735	{
		1736	dREQ;
		1737
		1738	req->sv1 = newSVsv (fh_or_path);
		1739	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1740
		1741	if (SvPOK (fh_or_path))
		1742	{
		1743	req->type = REQ_TRUNCATE;
		1744	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1745	}
		1746	else
		1747	{
		1748	req->type = REQ_FTRUNCATE;
		1749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1750	}
		1751
		1752	REQ_SEND;
		1753	}
		1754
		1755	void
		1756	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1757	PPCODE:
		1758	{
		1759	dREQ;
		1760
		1761	req->mode = mode;
		1762	req->sv1 = newSVsv (fh_or_path);
		1763
		1764	if (SvPOK (fh_or_path))
		1765	{
		1766	req->type = REQ_CHMOD;
		1767	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1768	}
		1769	else
		1770	{
		1771	req->type = REQ_FCHMOD;
		1772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1773	}
		1774
		1775	REQ_SEND;
		1776	}
		1777
		1778	void
		1779	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1780	PPCODE:
		1781	{
		1782	dREQ;
		1783
		1784	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1785	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1786	req->sv1 = newSVsv (fh_or_path);
		1787
		1788	if (SvPOK (fh_or_path))
		1789	{
		1790	req->type = REQ_CHOWN;
		1791	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1792	}
		1793	else
		1794	{
		1795	req->type = REQ_FCHOWN;
		1796	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1797	}
		1798
		1799	REQ_SEND;
		1800	}
		1801
		1802	void
983	aio_unlink(pathname,callback=&PL_sv_undef)	1803	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
984	SV * pathname
985	SV * callback
986	ALIAS:	1804	ALIAS:
987	aio_unlink = REQ_UNLINK	1805	aio_unlink = REQ_UNLINK
988	aio_rmdir = REQ_RMDIR	1806	aio_rmdir = REQ_RMDIR
		1807	aio_readdir = REQ_READDIR
989	CODE:	1808	PPCODE:
990	{	1809	{
991	dREQ;	1810	dREQ;
992		1811
993	req->type = ix;	1812	req->type = ix;
994	req->data = newSVsv (pathname);	1813	req->sv1 = newSVsv (pathname);
995	req->dataptr = SvPVbyte_nolen (req->data);	1814	req->ptr1 = SvPVbyte_nolen (req->sv1);
996
997	send_req (req);
998	}
999		1815
		1816	REQ_SEND;
		1817	}
		1818
1000	void	1819	void
1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1820	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1002	SV * oldpath
1003	SV * newpath
1004	SV * callback
1005	CODE:	1821	PPCODE:
1006	{	1822	{
1007	dREQ;	1823	dREQ;
1008		1824
1009	req->type = REQ_SYMLINK;	1825	req->type = REQ_MKDIR;
1010	req->fh = newSVsv (oldpath);	1826	req->sv1 = newSVsv (pathname);
1011	req->data2ptr = SvPVbyte_nolen (req->fh);	1827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1012	req->data = newSVsv (newpath);	1828	req->mode = mode;
1013	req->dataptr = SvPVbyte_nolen (req->data);
1014
1015	send_req (req);
1016	}
1017		1829
		1830	REQ_SEND;
		1831	}
		1832
1018	void	1833	void
1019	aio_readdir(pathname,callback=&PL_sv_undef)	1834	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1020	SV * pathname	1835	ALIAS:
1021	SV * callback	1836	aio_link = REQ_LINK
		1837	aio_symlink = REQ_SYMLINK
		1838	aio_rename = REQ_RENAME
1022	CODE:	1839	PPCODE:
1023	{	1840	{
1024	dREQ;	1841	dREQ;
1025		1842
1026	req->type = REQ_READDIR;	1843	req->type = ix;
1027	req->data = newSVsv (pathname);	1844	req->sv2 = newSVsv (oldpath);
1028	req->dataptr = SvPVbyte_nolen (req->data);	1845	req->ptr2 = SvPVbyte_nolen (req->sv2);
		1846	req->sv1 = newSVsv (newpath);
		1847	req->ptr1 = SvPVbyte_nolen (req->sv1);
1029		1848
1030	send_req (req);	1849	REQ_SEND;
1031	}	1850	}
1032		1851
1033	void	1852	void
		1853	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1854	PPCODE:
		1855	{
		1856	dREQ;
		1857
		1858	req->type = REQ_MKNOD;
		1859	req->sv1 = newSVsv (pathname);
		1860	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1861	req->mode = (mode_t)mode;
		1862	req->offs = dev;
		1863
		1864	REQ_SEND;
		1865	}
		1866
		1867	void
		1868	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1869	PPCODE:
		1870	{
		1871	dREQ;
		1872
		1873	req->type = REQ_BUSY;
		1874	req->nv1 = delay < 0. ? 0. : delay;
		1875
		1876	REQ_SEND;
		1877	}
		1878
		1879	void
		1880	aio_group (SV *callback=&PL_sv_undef)
		1881	PROTOTYPE: ;$
		1882	PPCODE:
		1883	{
		1884	dREQ;
		1885
		1886	req->type = REQ_GROUP;
		1887
		1888	req_send (req);
		1889	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1890	}
		1891
		1892	void
		1893	aio_nop (SV *callback=&PL_sv_undef)
		1894	ALIAS:
		1895	aio_nop = REQ_NOP
		1896	aio_sync = REQ_SYNC
		1897	PPCODE:
		1898	{
		1899	dREQ;
		1900
		1901	req->type = ix;
		1902
		1903	REQ_SEND;
		1904	}
		1905
		1906	int
		1907	aioreq_pri (int pri = 0)
		1908	PROTOTYPE: ;$
		1909	CODE:
		1910	RETVAL = next_pri - PRI_BIAS;
		1911	if (items > 0)
		1912	{
		1913	if (pri < PRI_MIN) pri = PRI_MIN;
		1914	if (pri > PRI_MAX) pri = PRI_MAX;
		1915	next_pri = pri + PRI_BIAS;
		1916	}
		1917	OUTPUT:
		1918	RETVAL
		1919
		1920	void
		1921	aioreq_nice (int nice = 0)
		1922	CODE:
		1923	nice = next_pri - nice;
		1924	if (nice < PRI_MIN) nice = PRI_MIN;
		1925	if (nice > PRI_MAX) nice = PRI_MAX;
		1926	next_pri = nice + PRI_BIAS;
		1927
		1928	void
1034	flush()	1929	flush ()
1035	PROTOTYPE:	1930	PROTOTYPE:
1036	CODE:	1931	CODE:
1037	while (nreqs)	1932	while (nreqs)
1038	{	1933	{
1039	poll_wait ();	1934	poll_wait ();
1040	poll_cb ();	1935	poll_cb ();
1041	}	1936	}
1042		1937
1043	void	1938	int
1044	poll()	1939	poll()
1045	PROTOTYPE:	1940	PROTOTYPE:
1046	CODE:	1941	CODE:
1047	if (nreqs)
1048	{
1049	poll_wait ();	1942	poll_wait ();
1050	poll_cb ();	1943	RETVAL = poll_cb ();
1051	}	1944	OUTPUT:
		1945	RETVAL
1052		1946
1053	int	1947	int
1054	poll_fileno()	1948	poll_fileno()
1055	PROTOTYPE:	1949	PROTOTYPE:
1056	CODE:	1950	CODE:
…		…
1068		1962
1069	void	1963	void
1070	poll_wait()	1964	poll_wait()
1071	PROTOTYPE:	1965	PROTOTYPE:
1072	CODE:	1966	CODE:
1073	if (nreqs)
1074	poll_wait ();	1967	poll_wait ();
		1968
		1969	void
		1970	setsig (int signum = SIGIO)
		1971	PROTOTYPE: ;$
		1972	CODE:
		1973	{
		1974	if (block_sig_level)
		1975	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1976
		1977	X_LOCK (reslock);
		1978	main_tid = pthread_self ();
		1979	main_sig = signum;
		1980	X_UNLOCK (reslock);
		1981
		1982	if (main_sig && npending)
		1983	pthread_kill (main_tid, main_sig);
		1984	}
		1985
		1986	void
		1987	aio_block (SV *cb)
		1988	PROTOTYPE: &
		1989	PPCODE:
		1990	{
		1991	int count;
		1992
		1993	block_sig ();
		1994	PUSHMARK (SP);
		1995	PUTBACK;
		1996	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1997	unblock_sig ();
		1998
		1999	if (SvTRUE (ERRSV))
		2000	croak (0);
		2001
		2002	XSRETURN (count);
		2003	}
1075		2004
1076	int	2005	int
1077	nreqs()	2006	nreqs()
1078	PROTOTYPE:	2007	PROTOTYPE:
1079	CODE:	2008	CODE:
1080	RETVAL = nreqs;	2009	RETVAL = nreqs;
1081	OUTPUT:	2010	OUTPUT:
1082	RETVAL	2011	RETVAL
1083		2012
		2013	int
		2014	nready()
		2015	PROTOTYPE:
		2016	CODE:
		2017	RETVAL = get_nready ();
		2018	OUTPUT:
		2019	RETVAL
		2020
		2021	int
		2022	npending()
		2023	PROTOTYPE:
		2024	CODE:
		2025	RETVAL = get_npending ();
		2026	OUTPUT:
		2027	RETVAL
		2028
		2029	int
		2030	nthreads()
		2031	PROTOTYPE:
		2032	CODE:
		2033	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2034	RETVAL = started;
		2035	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2036	OUTPUT:
		2037	RETVAL
		2038
		2039	PROTOTYPES: DISABLE
		2040
		2041	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2042
		2043	void
		2044	cancel (aio_req_ornot req)
		2045	CODE:
		2046	req_cancel (req);
		2047
		2048	void
		2049	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		2050	CODE:
		2051	SvREFCNT_dec (req->callback);
		2052	req->callback = newSVsv (callback);
		2053
		2054	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2055
		2056	void
		2057	add (aio_req grp, ...)
		2058	PPCODE:
		2059	{
		2060	int i;
		2061	aio_req req;
		2062
		2063	if (main_sig && !block_sig_level)
		2064	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2065
		2066	if (grp->int1 == 2)
		2067	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2068
		2069	for (i = 1; i < items; ++i )
		2070	{
		2071	if (GIMME_V != G_VOID)
		2072	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2073
		2074	req = SvAIO_REQ (ST (i));
		2075
		2076	if (req)
		2077	{
		2078	++grp->size;
		2079	req->grp = grp;
		2080
		2081	req->grp_prev = 0;
		2082	req->grp_next = grp->grp_first;
		2083
		2084	if (grp->grp_first)
		2085	grp->grp_first->grp_prev = req;
		2086
		2087	grp->grp_first = req;
		2088	}
		2089	}
		2090	}
		2091
		2092	void
		2093	cancel_subs (aio_req_ornot req)
		2094	CODE:
		2095	req_cancel_subs (req);
		2096
		2097	void
		2098	result (aio_req grp, ...)
		2099	CODE:
		2100	{
		2101	int i;
		2102	AV *av;
		2103
		2104	grp->errorno = errno;
		2105
		2106	av = newAV ();
		2107
		2108	for (i = 1; i < items; ++i )
		2109	av_push (av, newSVsv (ST (i)));
		2110
		2111	SvREFCNT_dec (grp->sv1);
		2112	grp->sv1 = (SV *)av;
		2113	}
		2114
		2115	void
		2116	errno (aio_req grp, int errorno = errno)
		2117	CODE:
		2118	grp->errorno = errorno;
		2119
		2120	void
		2121	limit (aio_req grp, int limit)
		2122	CODE:
		2123	grp->int2 = limit;
		2124	aio_grp_feed (grp);
		2125
		2126	void
		2127	feed (aio_req grp, SV *callback=&PL_sv_undef)
		2128	CODE:
		2129	{
		2130	SvREFCNT_dec (grp->sv2);
		2131	grp->sv2 = newSVsv (callback);
		2132
		2133	if (grp->int2 <= 0)
		2134	grp->int2 = 2;
		2135
		2136	aio_grp_feed (grp);
		2137	}
		2138

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