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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 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>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define SIGIO 0
		21	typedef Direntry_t X_DIRENT;
		22	#undef malloc
		23	#undef free
		24
		25	// perl overrides all those nice win32 functions
		26	# undef open
		27	# undef read
		28	# undef write
		29	# undef send
		30	# undef recv
		31	# undef stat
		32	# undef fstat
		33	# define lstat stat
		34	# undef truncate
		35	# undef ftruncate
		36	# undef open
		37	# undef close
		38	# undef unlink
		39	# undef rmdir
		40	# undef rename
		41	# undef lseek
		42
		43	# define chown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchown(a,b,c) (errno = ENOSYS, -1)
		45	# define fchmod(a,b) (errno = ENOSYS, -1)
		46	# define symlink(a,b) (errno = ENOSYS, -1)
		47	# define readlink(a,b,c) (errno = ENOSYS, -1)
		48	# define mknod(a,b,c) (errno = ENOSYS, -1)
		49	# define truncate(a,b) (errno = ENOSYS, -1)
		50	# define ftruncate(fd,o) chsize ((fd), (o))
		51	# define fsync(fd) _commit (fd)
		52	# define opendir(fd) (errno = ENOSYS, 0)
		53	# define readdir(fd) (errno = ENOSYS, -1)
		54	# define closedir(fd) (errno = ENOSYS, -1)
		55	# define mkdir(a,b) mkdir (a)
		56
		57	#else
		58
		59	# include "autoconf/config.h"
		60	# include <sys/time.h>
		61	# include <sys/select.h>
		62	# include <unistd.h>
		63	# include <utime.h>
		64	# include <signal.h>
		65	typedef struct dirent X_DIRENT;
		66
		67	#endif
23		68
24	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
25	# if __linux	70	# if __linux
26	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
27	# elif __freebsd	72	# elif __freebsd
…		…
34	# else	79	# else
35	# error sendfile support requested but not available	80	# error sendfile support requested but not available
36	# endif	81	# endif
37	#endif	82	#endif
38		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
39	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	88	#ifndef NAME_MAX
41	# define NAME_MAX 4096	89	# define NAME_MAX 4096
42	#endif	90	#endif
43		91
44	#if __ia64	92	/* buffer size for various temporary buffers */
45	# define STACKSIZE 65536	93	#define AIO_BUFSIZE 65536
		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
46	#else	98	#else
47	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
48	#endif	100	#endif
		101
		102	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 */
49		113
50	enum {	114	enum {
51	REQ_QUIT,	115	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
55	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,
56	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	128	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	129	REQ_BUSY,
62	};	130	};
63		131
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	132	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	133	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		134
67	typedef struct aio_cb	135	typedef struct aio_cb
68	{	136	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
72		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;
		148	int type;
		149	int int1, int2, int3;
		150	int errorno;
		151	mode_t mode; /* open */
		152
		153	unsigned char flags;
		154	unsigned char pri;
		155
73	SV *self; /* the perl counterpart of this request, if any */	156	SV *self; /* the perl counterpart of this request, if any */
74		157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;	158	} aio_cb;
		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	};
90		165
91	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
93	typedef aio_cb *aio_group;
94		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
95	static int started, wanted;	226	static unsigned int started, idle, wanted;
96	static volatile int nreqs;
97	static int max_outstanding = 1<<30;
98	static int respipe [2];
99		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
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	273	static mutex_t reslock = X_MUTEX_INIT;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	274	static mutex_t reqlock = X_MUTEX_INIT;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
103		276
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	277	#if WORDACCESS_UNSAFE
105	static volatile aio_req ress, rese; /* queue start, queue end */
106		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);
107	static void req_free (aio_req req);	377	static void req_cancel (aio_req req);
108		378
109	/* must be called at most once */	379	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
111	{	381	{
		382	if (!req->self)
		383	{
112	req->self = (SV *)newHV ();	384	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		386	}
114		387
115	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
116	}	389	}
117		390
118	static aio_req SvAIO_REQ (SV *sv)	391	static aio_req SvAIO_REQ (SV *sv)
119	{	392	{
		393	MAGIC *mg;
		394
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
121	croak ("object of class " AIO_REQ_KLASS " expected");	396	croak ("object of class " AIO_REQ_KLASS " expected");
122		397
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		399
125	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	401	}
127		402
128	static void poll_wait ()	403	static void aio_grp_feed (aio_req grp)
129	{	404	{
130	if (nreqs && !ress)	405	block_sig ();
		406
		407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
131	{	408	{
132	fd_set rfd;	409	int old_len = grp->size;
133	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);
135		410
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	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	}
137	}	433	}
138	}
139		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
140	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
141	{	463	{
142	dSP;	464	dSP;
143	int errorno = errno;
144		465
145	if (req->cancelled || !SvOK (req->callback))	466	if (req->flags & FLAG_SV2_RO_OFF)
146	return;	467	SvREADONLY_off (req->sv2);
147		468
148	errno = req->errorno;	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
149
150	ENTER;
151	PUSHMARK (SP);
152
153	switch (req->type)
154	{	470	{
155	case REQ_READDIR:	471	ENTER;
		472	SAVETMPS;
		473	PUSHMARK (SP);
		474	EXTEND (SP, 1);
		475
		476	switch (req->type)
156	{	477	{
157	SV *rv = &PL_sv_undef;	478	case REQ_READDIR:
158
159	if (req->result >= 0)
160	{	479	{
161	char *buf = req->data2ptr;	480	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		481
164	while (req->result)	482	if (req->result >= 0)
165	{	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	{
166	SV *sv = newSVpv (buf, 0);	492	SV *sv = newSVpv (buf, 0);
167		493
168	av_push (av, sv);	494	av_store (av, i, sv);
169	buf += SvCUR (sv) + 1;	495	buf += SvCUR (sv) + 1;
170	req->result--;	496	}
		497
		498	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	499	}
172		500
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	PUSHs (rv);
174	}	502	}
		503	break;
175		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
176	XPUSHs (rv);	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;
177	}	581	}
178	break;
179		582
180	case REQ_OPEN:	583	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		584
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	585	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	587	SPAGAIN;
189		588
190	fh = SvREFCNT_inc (POPs);	589	FREETMPS;
		590	LEAVE;
191		591
192	PUSHMARK (SP);	592	PUTBACK;
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_SLEEP:
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}	593	}
205		594
206
207	PUTBACK;
208	call_sv (req->callback, G_VOID | G_EVAL);
209	SPAGAIN;
210
211	if (SvTRUE (ERRSV))
212	{
213	req_free (req);
214	croak (0);
215	}
216
217	LEAVE;
218
219	errno = errorno;
220	}
221
222	static void req_free (aio_req req)
223	{
224	if (req->grp)	595	if (req->grp)
225	{	596	{
226	aio_req grp = req->grp;	597	aio_req grp = req->grp;
227		598
228	/* unlink request */	599	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;	600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;	601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
231		602
232	if (grp->grp_next == grp)	603	if (grp->grp_first == req)
233	{	604	grp->grp_first = req->grp_next;
234	req_invoke (grp);	605
235	req_free (grp);	606	aio_grp_dec (grp);
236	}
237	}	607	}
238		608
		609	return !SvTRUE (ERRSV);
		610	}
		611
		612	static void req_destroy (aio_req req)
		613	{
239	if (req->self)	614	if (req->self)
240	{	615	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
243	}	618	}
244		619
245	if (req->data)
246	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
253
254	if (req->statdata)
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
259		623
260	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
261	free (req->data2ptr);	625	free (req->ptr2);
262		626
263	Safefree (req);	627	Safefree (req);
264	}	628	}
265		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
266	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
267	{	645	{
268	req->cancelled = 1;	646	req->flags |= FLAG_CANCELLED;
269		647
270	if (req->type == REQ_GROUP)	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
		657	static void
		658	create_respipe (void)
		659	{
		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)
271	{	673	{
272	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
273		676
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	677	respipe_close (respipe [0]);
275	req_cancel (sub);	678	respipe [0] = old_readfd;
276	}	679	}
277	}
278		680
		681	#ifdef _WIN32
		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
279	static int poll_cb ()	813	static int poll_cb (void)
280	{	814	{
281	dSP;	815	dSP;
282	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
283	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
284	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
285		826
286	for (;;)	827	for (;;)
287	{	828	{
288	pthread_mutex_lock (&reslock);	829	for (;;)
289	req = ress;
290
291	if (req)
292	{	830	{
293	ress = req->next;	831	maybe_start_thread ();
294		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
295	if (!ress)	836	if (req)
296	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
297	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
298	char buf [32];	843	char buf [4];
299	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
300	;	846	}
		847	}
301		848
		849	X_UNLOCK (reslock);
		850
		851	if (!req)
		852	break;
		853
		854	--nreqs;
		855
		856	if (req->type == REQ_GROUP && req->size)
		857	{
		858	req->int1 = 1; /* mark request as delayed */
		859	continue;
		860	}
		861	else
		862	{
		863	if (!req_invoke (req))
		864	{
		865	req_destroy (req);
		866	unblock_sig ();
		867	croak (0);
		868	}
		869
		870	count++;
		871	}
		872
		873	req_destroy (req);
		874
		875	if (maxreqs && !--maxreqs)
		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)
302	rese = 0;	883	break;
303	}	884	}
304	}	885	}
305		886
306	pthread_mutex_unlock (&reslock);	887	if (nreqs <= max_outstanding)
307
308	if (!req)
309	break;	888	break;
310		889
311	nreqs--;	890	poll_wait ();
312		891
313	if (req->type == REQ_QUIT)	892	++maxreqs;
314	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)
316	continue;
317	else
318	{
319	if (req->type == REQ_READ)
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
321
322	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
323	SvREADONLY_off (req->data);
324
325	if (req->statdata)
326	{
327	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
328	PL_laststatval = req->result;
329	PL_statcache = *(req->statdata);
330	}
331
332	req_invoke (req);
333
334	count++;
335	}
336
337	req_free (req);
338	}	893	}
339		894
		895	unblock_sig ();
340	return count;	896	return count;
341	}
342
343	static void *aio_proc(void *arg);
344
345	static void start_thread (void)
346	{
347	sigset_t fullsigset, oldsigset;
348	pthread_t tid;
349	pthread_attr_t attr;
350
351	pthread_attr_init (&attr);
352	pthread_attr_setstacksize (&attr, STACKSIZE);
353	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
354
355	sigfillset (&fullsigset);
356	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
357
358	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
359	started++;
360
361	sigprocmask (SIG_SETMASK, &oldsigset, 0);
362	}
363
364	static void req_send (aio_req req)
365	{
366	while (started < wanted && nreqs >= started)
367	start_thread ();
368
369	nreqs++;
370
371	pthread_mutex_lock (&reqlock);
372
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);
385
386	if (nreqs > max_outstanding)
387	for (;;)
388	{
389	poll_cb ();
390
391	if (nreqs <= max_outstanding)
392	break;
393
394	poll_wait ();
395	}
396	}
397
398	static void end_thread (void)
399	{
400	aio_req req;
401	Newz (0, req, 1, aio_cb);
402	req->type = REQ_QUIT;
403
404	req_send (req);
405	}
406
407	static void min_parallel (int nthreads)
408	{
409	if (wanted < nthreads)
410	wanted = nthreads;
411	}
412
413	static void max_parallel (int nthreads)
414	{
415	int cur = started;
416
417	if (wanted > nthreads)
418	wanted = nthreads;
419
420	while (cur > wanted)
421	{
422	end_thread ();
423	cur--;
424	}
425
426	while (started > wanted)
427	{
428	poll_wait ();
429	poll_cb ();
430	}
431	}
432
433	static void create_pipe ()
434	{
435	if (pipe (respipe))
436	croak ("unable to initialize result pipe");
437
438	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
439	croak ("cannot set result pipe to nonblocking mode");
440
441	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
442	croak ("cannot set result pipe to nonblocking mode");
443	}	897	}
444		898
445	/*****************************************************************************/	899	/*****************************************************************************/
446	/* work around various missing functions */	900	/* work around various missing functions */
447		901
…		…
452	/*	906	/*
453	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
454	* 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,
455	* but that's your problem, not mine.	909	* but that's your problem, not mine.
456	*/	910	*/
457	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
458		912
459	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
460	{	914	{
461	ssize_t res;	915	ssize_t res;
462	off_t ooffset;	916	off_t ooffset;
463		917
464	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
465	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
466	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
467	res = read (fd, buf, count);	921	res = read (fd, buf, count);
468	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
469	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
470		924
471	return res;	925	return res;
472	}	926	}
473		927
474	static ssize_t 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)
475	{	929	{
476	ssize_t res;	930	ssize_t res;
477	off_t ooffset;	931	off_t ooffset;
478		932
479	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
480	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
481	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
482	res = write (fd, buf, count);	936	res = write (fd, buf, count);
483	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
484	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
485		939
486	return res;	940	return res;
487	}	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
488	#endif	970	#endif
489		971
490	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
491	# define fdatasync fsync	973	# define fdatasync fsync
492	#endif	974	#endif
493		975
494	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
495	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
496		978
497	static ssize_t readahead (int fd, off_t offset, size_t count)	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
498	{	980	{
499	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
500		983
501	while (count > 0)	984	while (todo > 0)
502	{	985	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
504		987
505	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
506	offset += len;	989	offset += len;
507	count -= len;	990	todo -= len;
508	}	991	}
509		992
510	errno = 0;	993	errno = 0;
		994	return count;
511	}	995	}
		996
512	#endif	997	#endif
513		998
514	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
515	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
516		1001
517	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
518		1003
519	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
520	{	1005	{
521	struct dirent *e;	1006	X_DIRENT *e;
522	int errorno;	1007	int errorno;
523		1008
524	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
525		1010
526	e = readdir (dirp);	1011	e = readdir (dirp);
527	errorno = errno;	1012	errorno = errno;
528		1013
529	if (e)	1014	if (e)
…		…
532	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
533	}	1018	}
534	else	1019	else
535	*res = 0;	1020	*res = 0;
536		1021
537	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
538		1023
539	errno = errorno;	1024	errno = errorno;
540	return e ? 0 : -1;	1025	return e ? 0 : -1;
541	}	1026	}
542	#endif	1027	#endif
543		1028
544	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
545	static ssize_t 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)
546	{	1031	{
547	ssize_t res;	1032	ssize_t res;
548		1033
549	if (!count)	1034	if (!count)
550	return 0;	1035	return 0;
…		…
561	{	1046	{
562	off_t sbytes;	1047	off_t sbytes;
563	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
564		1049
565	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
566	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
567	res = sbytes;	1052	res = sbytes;
568	}	1053	}
569		1054
570	# elif __hpux	1055	# elif __hpux
571	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
599	#endif	1084	#endif
600	)	1085	)
601	)	1086	)
602	{	1087	{
603	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];	1089	dBUF;
		1090
605	res = 0;	1091	res = 0;
606		1092
607	while (count)	1093	while (count)
608	{	1094	{
609	ssize_t cnt;	1095	ssize_t cnt;
610		1096
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
612		1098
613	if (cnt <= 0)	1099	if (cnt <= 0)
614	{	1100	{
615	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
616	break;	1102	break;
617	}	1103	}
618		1104
619	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
620		1106
621	if (cnt <= 0)	1107	if (cnt <= 0)
622	{	1108	{
623	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
624	break;	1110	break;
…		…
632		1118
633	return res;	1119	return res;
634	}	1120	}
635		1121
636	/* read a full directory */	1122	/* read a full directory */
637	static int scandir_ (const char *path, void **namesp)	1123	static void scandir_ (aio_req req, worker *self)
638	{	1124	{
639	DIR *dirp = opendir (path);	1125	DIR *dirp;
640	union	1126	union
641	{	1127	{
642	struct dirent d;	1128	X_DIRENT d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
644	} u;	1130	} *u;
645	struct dirent *entp;	1131	X_DIRENT *entp;
646	char *name, *names;	1132	char *name, *names;
647	int memlen = 4096;	1133	int memlen = 4096;
648	int memofs = 0;	1134	int memofs = 0;
649	int res = 0;	1135	int res = 0;
650	int errorno;
651		1136
652	if (!dirp)	1137	X_LOCK (wrklock);
653	return -1;	1138	self->dirp = dirp = opendir (req->ptr1);
654		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
655	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);
656		1194
657	for (;;)	1195	for (;;)
658	{	1196	{
659	errno = 0, readdir_r (dirp, &u.d, &entp);	1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
660		1198
661	if (!entp)	1199	X_LOCK (reqlock);
662	break;
663
664	name = entp->d_name;
665
666	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
667	{
668	int len = strlen (name) + 1;
669
670	res++;
671
672	while (memofs + len > memlen)
673	{
674	memlen *= 2;
675	names = realloc (names, memlen);
676	if (!names)
677	break;
678	}
679
680	memcpy (names + memofs, name, len);
681	memofs += len;
682	}
683	}
684
685	errorno = errno;
686	closedir (dirp);
687
688	if (errorno)
689	{
690	free (names);
691	errno = errorno;
692	res = -1;
693	}
694
695	*namesp = (void *)names;
696	return res;
697	}
698
699	/*****************************************************************************/
700
701	static void *aio_proc (void *thr_arg)
702	{
703	aio_req req;
704	int type;
705
706	do
707	{
708	pthread_mutex_lock (&reqlock);
709		1200
710	for (;;)	1201	for (;;)
711	{	1202	{
712	req = reqs;	1203	self->req = req = reqq_shift (&req_queue);
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719		1204
720	if (req)	1205	if (req)
721	break;	1206	break;
722		1207
723	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;
724	}	1229	}
725		1230
726	pthread_mutex_unlock (&reqlock);	1231	--nready;
		1232
		1233	X_UNLOCK (reqlock);
727		1234
728	errno = 0; /* strictly unnecessary */	1235	errno = 0; /* strictly unnecessary */
729		1236
730	if (!req->cancelled)	1237	if (!(req->flags & FLAG_CANCELLED))
731	switch (req->type)	1238	switch (req->type)
732	{	1239	{
733	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1240	case REQ_READ: req->result = req->offs >= 0
734	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	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;
735		1246
736	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
737	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
738		1249
739	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
740	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
741	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
742		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
743	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
744	case REQ_CLOSE: req->result = close (req->fd); break;	1262	case REQ_CLOSE: req->result = close (req->int1); break;
745	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
746	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
747	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
748	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
749	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); 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;
750		1271
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1272	case REQ_SYNC: req->result = 0; sync (); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;	1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1274	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
754		1275
		1276	case REQ_READDIR: scandir_ (req, self); break;
		1277
755	case REQ_SLEEP:	1278	case REQ_BUSY:
		1279	#ifdef _WIN32
		1280	Sleep (req->nv1 * 1000.);
		1281	#else
756	{	1282	{
757	struct timeval tv;	1283	struct timeval tv;
758		1284
759	tv.tv_sec = req->fd;	1285	tv.tv_sec = req->nv1;
760	tv.tv_usec = req->fd2;	1286	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
761		1287
762	req->result = select (0, 0, 0, 0, &tv);	1288	req->result = select (0, 0, 0, 0, &tv);
763	}	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;
764		1320
765	case REQ_QUIT:	1321	case REQ_QUIT:
766	break;	1322	goto quit;
767		1323
768	default:	1324	default:
769	req->result = ENOSYS;	1325	req->result = -1;
770	break;	1326	break;
771	}	1327	}
772		1328
773	req->errorno = errno;	1329	req->errorno = errno;
774		1330
775	pthread_mutex_lock (&reslock);	1331	X_LOCK (reslock);
776		1332
777	req->next = 0;	1333	++npending;
778		1334
779	if (rese)	1335	if (!reqq_push (&res_queue, req))
780	{	1336	{
781	rese->next = req;	1337	/* write a dummy byte to the pipe so fh becomes ready */
782	rese = req;	1338	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1339
		1340	/* optionally signal the main thread asynchronously */
		1341	if (main_sig)
		1342	pthread_kill (main_tid, main_sig);
783	}	1343	}
784	else
785	{
786	rese = ress = req;
787		1344
788	/* write a dummy byte to the pipe so fh becomes ready */	1345	self->req = 0;
789	write (respipe [1], &respipe, 1);	1346	worker_clear (self);
790	}
791		1347
792	pthread_mutex_unlock (&reslock);	1348	X_UNLOCK (reslock);
793	}	1349	}
794	while (type != REQ_QUIT);	1350
		1351	quit:
		1352	X_LOCK (wrklock);
		1353	worker_free (self);
		1354	X_UNLOCK (wrklock);
795		1355
796	return 0;	1356	return 0;
		1357	}//D
797	}	1358	}
798		1359
799	/*****************************************************************************/	1360	/*****************************************************************************/
800		1361
801	static void atfork_prepare (void)	1362	static void atfork_prepare (void)
802	{	1363	{
803	pthread_mutex_lock (&reqlock);	1364	X_LOCK (wrklock);
804	pthread_mutex_lock (&reslock);	1365	X_LOCK (reqlock);
		1366	X_LOCK (reslock);
805	#if !HAVE_PREADWRITE	1367	#if !HAVE_PREADWRITE
806	pthread_mutex_lock (&preadwritelock);	1368	X_LOCK (preadwritelock);
807	#endif	1369	#endif
808	#if !HAVE_READDIR_R	1370	#if !HAVE_READDIR_R
809	pthread_mutex_lock (&readdirlock);	1371	X_LOCK (readdirlock);
810	#endif	1372	#endif
811	}	1373	}
812		1374
813	static void atfork_parent (void)	1375	static void atfork_parent (void)
814	{	1376	{
815	#if !HAVE_READDIR_R	1377	#if !HAVE_READDIR_R
816	pthread_mutex_unlock (&readdirlock);	1378	X_UNLOCK (readdirlock);
817	#endif	1379	#endif
818	#if !HAVE_PREADWRITE	1380	#if !HAVE_PREADWRITE
819	pthread_mutex_unlock (&preadwritelock);	1381	X_UNLOCK (preadwritelock);
820	#endif	1382	#endif
821	pthread_mutex_unlock (&reslock);	1383	X_UNLOCK (reslock);
822	pthread_mutex_unlock (&reqlock);	1384	X_UNLOCK (reqlock);
		1385	X_UNLOCK (wrklock);
823	}	1386	}
824		1387
825	static void atfork_child (void)	1388	static void atfork_child (void)
826	{	1389	{
827	aio_req prv;	1390	aio_req prv;
828		1391
829	started = 0;	1392	while (prv = reqq_shift (&req_queue))
		1393	req_destroy (prv);
830		1394
831	while (reqs)	1395	while (prv = reqq_shift (&res_queue))
		1396	req_destroy (prv);
		1397
		1398	while (wrk_first.next != &wrk_first)
832	{	1399	{
833	prv = reqs;	1400	worker *wrk = wrk_first.next;
834	reqs = prv->next;	1401
		1402	if (wrk->req)
		1403	req_destroy (wrk->req);
		1404
		1405	worker_clear (wrk);
835	req_free (prv);	1406	worker_free (wrk);
836	}	1407	}
837		1408
838	reqs = reqe = 0;	1409	started = 0;
839		1410	idle = 0;
840	while (ress)	1411	nreqs = 0;
841	{	1412	nready = 0;
842	prv = ress;	1413	npending = 0;
843	ress = prv->next;
844	req_free (prv);
845	}
846
847	ress = rese = 0;
848		1414
849	close (respipe [0]);
850	close (respipe [1]);
851	create_pipe ();	1415	create_respipe ();
852		1416
853	atfork_parent ();	1417	atfork_parent ();
854	}	1418	}
855		1419
856	#define dREQ \	1420	#define dREQ \
857	aio_req req; \	1421	aio_req req; \
		1422	int req_pri = next_pri; \
		1423	next_pri = DEFAULT_PRI + PRI_BIAS; \
858	\	1424	\
859	if (SvOK (callback) && !SvROK (callback)) \	1425	if (SvOK (callback) && !SvROK (callback)) \
860	croak ("callback must be undef or of reference type"); \	1426	croak ("callback must be undef or of reference type"); \
861	\	1427	\
862	Newz (0, req, 1, aio_cb); \	1428	Newz (0, req, 1, aio_cb); \
863	if (!req) \	1429	if (!req) \
864	croak ("out of memory during aio_req allocation"); \	1430	croak ("out of memory during aio_req allocation"); \
865	\	1431	\
866	req->callback = newSVsv (callback)	1432	req->callback = newSVsv (callback); \
		1433	req->pri = req_pri
867		1434
868	#define REQ_SEND \	1435	#define REQ_SEND \
869	req_send (req); \	1436	req_send (req); \
870	\	1437	\
871	if (GIMME_V != G_VOID) \	1438	if (GIMME_V != G_VOID) \
…		…
875		1442
876	PROTOTYPES: ENABLE	1443	PROTOTYPES: ENABLE
877		1444
878	BOOT:	1445	BOOT:
879	{	1446	{
880	HV *stash = gv_stashpv ("IO::AIO", 1);	1447	stash = gv_stashpv ("IO::AIO", 1);
		1448
881	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1449	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
882	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1450	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
883	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	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);
884		1461
885	create_pipe ();	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
886	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1470	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
887	}	1471	}
888		1472
889	void	1473	void
890	min_parallel (nthreads)	1474	max_poll_reqs (int nreqs)
891	int nthreads
892	PROTOTYPE: $	1475	PROTOTYPE: $
		1476	CODE:
		1477	max_poll_reqs = nreqs;
893		1478
894	void	1479	void
895	max_parallel (nthreads)	1480	max_poll_time (double nseconds)
896	int nthreads
897	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);
898		1498
899	int	1499	int
900	max_outstanding (nreqs)	1500	max_outstanding (int maxreqs)
901	int nreqs	1501	PROTOTYPE: $
902	PROTOTYPE: $
903	CODE:	1502	CODE:
904	RETVAL = max_outstanding;	1503	RETVAL = max_outstanding;
905	max_outstanding = nreqs;	1504	max_outstanding = maxreqs;
		1505	OUTPUT:
		1506	RETVAL
906		1507
907	void	1508	void
908	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1509	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
909	SV * pathname
910	int flags
911	int mode
912	SV * callback
913	PROTOTYPE: $$$;$	1510	PROTOTYPE: $$$;$
914	PPCODE:	1511	PPCODE:
915	{	1512	{
916	dREQ;	1513	dREQ;
917		1514
918	req->type = REQ_OPEN;	1515	req->type = REQ_OPEN;
919	req->data = newSVsv (pathname);	1516	req->sv1 = newSVsv (pathname);
920	req->dataptr = SvPVbyte_nolen (req->data);	1517	req->ptr1 = SvPVbyte_nolen (req->sv1);
921	req->fd = flags;	1518	req->int1 = flags;
922	req->mode = mode;	1519	req->mode = mode;
923		1520
924	REQ_SEND;	1521	REQ_SEND;
925	}	1522	}
926		1523
927	void	1524	void
928	aio_close (fh,callback=&PL_sv_undef)	1525	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
929	SV * fh
930	SV * callback
931	PROTOTYPE: $;$	1526	PROTOTYPE: $;$
932	ALIAS:	1527	ALIAS:
933	aio_close = REQ_CLOSE
934	aio_fsync = REQ_FSYNC	1528	aio_fsync = REQ_FSYNC
935	aio_fdatasync = REQ_FDATASYNC	1529	aio_fdatasync = REQ_FDATASYNC
936	PPCODE:	1530	PPCODE:
937	{	1531	{
938	dREQ;	1532	dREQ;
939		1533
940	req->type = ix;	1534	req->type = ix;
941	req->fh = newSVsv (fh);	1535	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1536	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
943		1537
944	REQ_SEND (req);	1538	REQ_SEND (req);
945	}	1539	}
946		1540
		1541	int
		1542	_dup (int fd)
		1543	PROTOTYPE: $
		1544	CODE:
		1545	RETVAL = dup (fd);
		1546	OUTPUT:
		1547	RETVAL
		1548
947	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
948	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)
949	SV * fh
950	UV offset
951	UV length
952	SV * data
953	UV dataoffset
954	SV * callback
955	ALIAS:	1564	ALIAS:
956	aio_read = REQ_READ	1565	aio_read = REQ_READ
957	aio_write = REQ_WRITE	1566	aio_write = REQ_WRITE
958	PROTOTYPE: $$$$$;$	1567	PROTOTYPE: $$$$$;$
959	PPCODE:	1568	PPCODE:
960	{	1569	{
961	aio_req req;
962	STRLEN svlen;	1570	STRLEN svlen;
963	char *svptr = SvPVbyte (data, svlen);	1571	char *svptr = SvPVbyte (data, svlen);
		1572	UV len = SvUV (length);
964		1573
965	SvUPGRADE (data, SVt_PV);	1574	SvUPGRADE (data, SVt_PV);
966	SvPOK_on (data);	1575	SvPOK_on (data);
967		1576
968	if (dataoffset < 0)	1577	if (dataoffset < 0)
969	dataoffset += svlen;	1578	dataoffset += svlen;
970		1579
971	if (dataoffset < 0 || dataoffset > svlen)	1580	if (dataoffset < 0 || dataoffset > svlen)
972	croak ("data offset outside of string");	1581	croak ("dataoffset outside of data scalar");
973		1582
974	if (ix == REQ_WRITE)	1583	if (ix == REQ_WRITE)
975	{	1584	{
976	/* write: check length and adjust. */	1585	/* write: check length and adjust. */
977	if (length < 0 || length + dataoffset > svlen)	1586	if (!SvOK (length) || len + dataoffset > svlen)
978	length = svlen - dataoffset;	1587	len = svlen - dataoffset;
979	}	1588	}
980	else	1589	else
981	{	1590	{
982	/* read: grow scalar as necessary */	1591	/* read: grow scalar as necessary */
983	svptr = SvGROW (data, length + dataoffset);	1592	svptr = SvGROW (data, len + dataoffset + 1);
984	}	1593	}
985		1594
986	if (length < 0)	1595	if (len < 0)
987	croak ("length must not be negative");	1596	croak ("length must not be negative");
988		1597
989	{	1598	{
990	dREQ;	1599	dREQ;
991		1600
992	req->type = ix;	1601	req->type = ix;
993	req->fh = newSVsv (fh);	1602	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1603	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
995	: IoOFP (sv_2io (fh)));	1604	: IoOFP (sv_2io (fh)));
		1605	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
996	req->offset = offset;	1606	req->size = len;
997	req->length = length;
998	req->data = SvREFCNT_inc (data);	1607	req->sv2 = SvREFCNT_inc (data);
999	req->dataptr = (char *)svptr + dataoffset;	1608	req->ptr1 = (char *)svptr + dataoffset;
		1609	req->stroffset = dataoffset;
1000		1610
1001	if (!SvREADONLY (data))	1611	if (!SvREADONLY (data))
1002	{	1612	{
1003	SvREADONLY_on (data);	1613	SvREADONLY_on (data);
1004	req->data2ptr = (void *)data;	1614	req->flags |= FLAG_SV2_RO_OFF;
1005	}	1615	}
1006		1616
1007	REQ_SEND;	1617	REQ_SEND;
1008	}	1618	}
1009	}	1619	}
1010		1620
1011	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
1012	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)
1013	SV * out_fh
1014	SV * in_fh
1015	UV in_offset
1016	UV length
1017	SV * callback
1018	PROTOTYPE: $$$$;$	1643	PROTOTYPE: $$$$;$
1019	PPCODE:	1644	PPCODE:
1020	{	1645	{
1021	dREQ;	1646	dREQ;
1022		1647
1023	req->type = REQ_SENDFILE;	1648	req->type = REQ_SENDFILE;
1024	req->fh = newSVsv (out_fh);	1649	req->sv1 = newSVsv (out_fh);
1025	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1650	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1026	req->fh2 = newSVsv (in_fh);	1651	req->sv2 = newSVsv (in_fh);
1027	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1652	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1028	req->offset = in_offset;	1653	req->offs = SvVAL64 (in_offset);
1029	req->length = length;	1654	req->size = length;
1030		1655
1031	REQ_SEND;	1656	REQ_SEND;
1032	}	1657	}
1033		1658
1034	void	1659	void
1035	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1660	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1036	SV * fh
1037	UV offset
1038	IV length
1039	SV * callback
1040	PROTOTYPE: $$$;$	1661	PROTOTYPE: $$$;$
1041	PPCODE:	1662	PPCODE:
1042	{	1663	{
1043	dREQ;	1664	dREQ;
1044		1665
1045	req->type = REQ_READAHEAD;	1666	req->type = REQ_READAHEAD;
1046	req->fh = newSVsv (fh);	1667	req->sv1 = newSVsv (fh);
1047	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1048	req->offset = offset;	1669	req->offs = SvVAL64 (offset);
1049	req->length = length;	1670	req->size = length;
1050		1671
1051	REQ_SEND;	1672	REQ_SEND;
1052	}	1673	}
1053		1674
1054	void	1675	void
1055	aio_stat (fh_or_path,callback=&PL_sv_undef)	1676	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1056	SV * fh_or_path
1057	SV * callback
1058	ALIAS:	1677	ALIAS:
1059	aio_stat = REQ_STAT	1678	aio_stat = REQ_STAT
1060	aio_lstat = REQ_LSTAT	1679	aio_lstat = REQ_LSTAT
1061	PPCODE:	1680	PPCODE:
1062	{	1681	{
1063	dREQ;	1682	dREQ;
1064		1683
1065	New (0, req->statdata, 1, Stat_t);	1684	req->ptr2 = malloc (sizeof (Stat_t));
1066	if (!req->statdata)	1685	if (!req->ptr2)
1067	{	1686	{
1068	req_free (req);	1687	req_destroy (req);
1069	croak ("out of memory during aio_req->statdata allocation");	1688	croak ("out of memory during aio_stat statdata allocation");
1070	}	1689	}
		1690
		1691	req->flags |= FLAG_PTR2_FREE;
		1692	req->sv1 = newSVsv (fh_or_path);
1071		1693
1072	if (SvPOK (fh_or_path))	1694	if (SvPOK (fh_or_path))
1073	{	1695	{
1074	req->type = ix;	1696	req->type = ix;
1075	req->data = newSVsv (fh_or_path);
1076	req->dataptr = SvPVbyte_nolen (req->data);	1697	req->ptr1 = SvPVbyte_nolen (req->sv1);
1077	}	1698	}
1078	else	1699	else
1079	{	1700	{
1080	req->type = REQ_FSTAT;	1701	req->type = REQ_FSTAT;
1081	req->fh = newSVsv (fh_or_path);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1702	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1083	}	1703	}
1084		1704
1085	REQ_SEND;	1705	REQ_SEND;
1086	}	1706	}
1087		1707
1088	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
1089	aio_unlink (pathname,callback=&PL_sv_undef)	1803	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1090	SV * pathname
1091	SV * callback
1092	ALIAS:	1804	ALIAS:
1093	aio_unlink = REQ_UNLINK	1805	aio_unlink = REQ_UNLINK
1094	aio_rmdir = REQ_RMDIR	1806	aio_rmdir = REQ_RMDIR
1095	aio_readdir = REQ_READDIR	1807	aio_readdir = REQ_READDIR
1096	PPCODE:	1808	PPCODE:
1097	{	1809	{
1098	dREQ;	1810	dREQ;
1099		1811
1100	req->type = ix;	1812	req->type = ix;
1101	req->data = newSVsv (pathname);	1813	req->sv1 = newSVsv (pathname);
1102	req->dataptr = SvPVbyte_nolen (req->data);	1814	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1815
		1816	REQ_SEND;
		1817	}
		1818
		1819	void
		1820	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1821	PPCODE:
		1822	{
		1823	dREQ;
1103		1824
		1825	req->type = REQ_MKDIR;
		1826	req->sv1 = newSVsv (pathname);
		1827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1828	req->mode = mode;
		1829
1104	REQ_SEND;	1830	REQ_SEND;
1105	}	1831	}
1106		1832
1107	void	1833	void
1108	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1834	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1109	SV * oldpath
1110	SV * newpath
1111	SV * callback
1112	ALIAS:	1835	ALIAS:
1113	aio_link = REQ_LINK	1836	aio_link = REQ_LINK
1114	aio_symlink = REQ_SYMLINK	1837	aio_symlink = REQ_SYMLINK
1115	aio_rename = REQ_RENAME	1838	aio_rename = REQ_RENAME
1116	PPCODE:	1839	PPCODE:
1117	{	1840	{
1118	dREQ;	1841	dREQ;
1119		1842
1120	req->type = ix;	1843	req->type = ix;
1121	req->fh = newSVsv (oldpath);	1844	req->sv2 = newSVsv (oldpath);
1122	req->data2ptr = SvPVbyte_nolen (req->fh);	1845	req->ptr2 = SvPVbyte_nolen (req->sv2);
1123	req->data = newSVsv (newpath);	1846	req->sv1 = newSVsv (newpath);
1124	req->dataptr = SvPVbyte_nolen (req->data);	1847	req->ptr1 = SvPVbyte_nolen (req->sv1);
1125		1848
1126	REQ_SEND;	1849	REQ_SEND;
1127	}	1850	}
1128		1851
1129	void	1852	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1853	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1131	double delay
1132	SV * callback
1133	PPCODE:	1854	PPCODE:
1134	{	1855	{
1135	dREQ;	1856	dREQ;
1136		1857
1137	req->type = REQ_SLEEP;	1858	req->type = REQ_MKNOD;
1138	req->fd = delay < 0. ? 0 : delay;	1859	req->sv1 = newSVsv (pathname);
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1860	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140		1861	req->mode = (mode_t)mode;
		1862	req->offs = dev;
		1863
1141	REQ_SEND;	1864	REQ_SEND;
1142	}	1865	}
1143		1866
1144	void	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
1145	aio_group (callback=&PL_sv_undef)	1880	aio_group (SV *callback=&PL_sv_undef)
1146	SV * callback
1147	PROTOTYPE: ;&	1881	PROTOTYPE: ;$
1148	PPCODE:	1882	PPCODE:
1149	{	1883	{
1150	dREQ;	1884	dREQ;
		1885
1151	req->type = REQ_GROUP;	1886	req->type = REQ_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154		1887
1155	req_send (req);	1888	req_send (req);
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1889	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1157	}	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;
1158		1927
1159	void	1928	void
1160	flush ()	1929	flush ()
1161	PROTOTYPE:	1930	PROTOTYPE:
1162	CODE:	1931	CODE:
…		…
1164	{	1933	{
1165	poll_wait ();	1934	poll_wait ();
1166	poll_cb ();	1935	poll_cb ();
1167	}	1936	}
1168		1937
1169	void	1938	int
1170	poll()	1939	poll()
1171	PROTOTYPE:	1940	PROTOTYPE:
1172	CODE:	1941	CODE:
1173	if (nreqs)
1174	{
1175	poll_wait ();	1942	poll_wait ();
1176	poll_cb ();	1943	RETVAL = poll_cb ();
1177	}	1944	OUTPUT:
		1945	RETVAL
1178		1946
1179	int	1947	int
1180	poll_fileno()	1948	poll_fileno()
1181	PROTOTYPE:	1949	PROTOTYPE:
1182	CODE:	1950	CODE:
…		…
1194		1962
1195	void	1963	void
1196	poll_wait()	1964	poll_wait()
1197	PROTOTYPE:	1965	PROTOTYPE:
1198	CODE:	1966	CODE:
1199	if (nreqs)
1200	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	}
1201		2004
1202	int	2005	int
1203	nreqs()	2006	nreqs()
1204	PROTOTYPE:	2007	PROTOTYPE:
1205	CODE:	2008	CODE:
1206	RETVAL = nreqs;	2009	RETVAL = nreqs;
1207	OUTPUT:	2010	OUTPUT:
1208	RETVAL	2011	RETVAL
1209		2012
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2013	int
1211		2014	nready()
1212	void
1213	cancel (aio_req_ornot req)
1214	PROTOTYPE:	2015	PROTOTYPE:
1215	CODE:	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:
1216	req_cancel (req);	2046	req_cancel (req);
1217		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
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2054	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		2055
1220	void	2056	void
1221	add (aio_req grp, ...)	2057	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	2058	PPCODE:
1224	{	2059	{
1225	int i;	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");
1226		2068
1227	for (i = 1; i < items; ++i )	2069	for (i = 1; i < items; ++i )
1228	{	2070	{
1229	aio_req req = SvAIO_REQ (ST (i));
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237
1238	if (GIMME_V != G_VOID)	2071	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	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	}
1240	}	2089	}
1241	}	2090	}
1242		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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