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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.46 by root, Sun Oct 22 00:49:29 2006 UTC vs.
Revision 1.112 by root, Tue Apr 1 19:40:47 2008 UTC

1	#define _REENTRANT 1	1	#include "xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/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		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
94	static int started, wanted;	226	static unsigned int started, idle, wanted;
95	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];
98		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
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	273	static mutex_t reslock = X_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	274	static mutex_t reqlock = X_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
102		276
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	277	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		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);
106	static void req_free (aio_req req);	377	static void req_cancel (aio_req req);
107		378
108	/* must be called at most once */	379	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
110	{	381	{
		382	if (!req->self)
		383	{
111	req->self = (SV *)newHV ();	384	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		386	}
113		387
114	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)));
115	}	389	}
116		390
117	static aio_req SvAIO_REQ (SV *sv)	391	static aio_req SvAIO_REQ (SV *sv)
118	{	392	{
		393	MAGIC *mg;
		394
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	396	croak ("object of class " AIO_REQ_KLASS " expected");
121		397
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		399
124	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	401	}
126		402
127	static void poll_wait ()	403	static void aio_grp_feed (aio_req grp)
128	{	404	{
129	if (nreqs && !ress)	405	block_sig ();
		406
		407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
130	{	408	{
131	fd_set rfd;	409	int old_len = grp->size;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		410
135	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	}
136	}	433	}
137	}
138		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
139	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
140	{	463	{
141	dSP;	464	dSP;
142	int errorno = errno;
143		465
144	if (req->cancelled || !SvOK (req->callback))	466	if (req->flags & FLAG_SV2_RO_OFF)
145	return;	467	SvREADONLY_off (req->sv2);
146		468
147	errno = req->errorno;	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	470	{
154	case REQ_READDIR:	471	ENTER;
		472	SAVETMPS;
		473	PUSHMARK (SP);
		474	EXTEND (SP, 1);
		475
		476	switch (req->type)
155	{	477	{
156	SV *rv = &PL_sv_undef;	478	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	479	{
160	char *buf = req->data2ptr;	480	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		481
163	while (req->result)	482	if (req->result >= 0)
164	{	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	{
165	SV *sv = newSVpv (buf, 0);	492	SV *sv = newSVpv (buf, 0);
166		493
167	av_push (av, sv);	494	av_store (av, i, sv);
168	buf += SvCUR (sv) + 1;	495	buf += SvCUR (sv) + 1;
169	req->result--;	496	}
		497
		498	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	499	}
171		500
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	PUSHs (rv);
173	}	502	}
		503	break;
174		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
175	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;
176	}	581	}
177	break;
178		582
179	case REQ_OPEN:	583	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		584
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	585	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
187	SPAGAIN;	587	SPAGAIN;
188		588
189	fh = SvREFCNT_inc (POPs);	589	FREETMPS;
		590	LEAVE;
190		591
191	PUSHMARK (SP);	592	PUTBACK;
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	593	}
204		594
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}
220
221	static void req_free (aio_req req)
222	{
223	if (req->grp)	595	if (req->grp)
224	{	596	{
225	aio_req grp = req->grp;	597	aio_req grp = req->grp;
226		598
227	/* unlink request */	599	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;	600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;	601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
230		602
231	if (grp->grp_next == grp && grp->fd)	603	if (grp->grp_first == req)
232	{	604	grp->grp_first = req->grp_next;
233	req_invoke (grp);	605
234	req_free (grp);	606	aio_grp_dec (grp);
235	}
236	}	607	}
237		608
		609	return !SvTRUE (ERRSV);
		610	}
		611
		612	static void req_destroy (aio_req req)
		613	{
238	if (req->self)	614	if (req->self)
239	{	615	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
242	}	618	}
243		619
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
258		623
259	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
260	free (req->data2ptr);	625	free (req->ptr2);
261		626
262	Safefree (req);	627	Safefree (req);
263	}	628	}
264		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
265	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
266	{	645	{
267	req->cancelled = 1;	646	req->flags |= FLAG_CANCELLED;
268		647
269	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)
270	{	673	{
271	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
272		676
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	677	respipe_close (respipe [0]);
274	req_cancel (sub);	678	respipe [0] = old_readfd;
275	}	679	}
276	}
277		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
278	static int poll_cb ()	813	static int poll_cb (void)
279	{	814	{
280	dSP;	815	dSP;
281	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
282	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
283	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
284		826
285	for (;;)	827	for (;;)
286	{	828	{
287	pthread_mutex_lock (&reslock);	829	for (;;)
288	req = ress;
289
290	if (req)
291	{	830	{
292	ress = req->next;	831	maybe_start_thread ();
293		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
294	if (!ress)	836	if (req)
295	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
296	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
297	char buf [32];	843	char buf [4];
298	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
299	;	846	}
		847	}
300		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)
301	rese = 0;	883	break;
302	}	884	}
303	}	885	}
304		886
305	pthread_mutex_unlock (&reslock);	887	if (nreqs <= max_outstanding)
306
307	if (!req)
308	break;	888	break;
309		889
310	nreqs--;	890	poll_wait ();
311		891
312	if (req->type == REQ_QUIT)	892	++maxreqs;
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{
316	req->fd = 1; /* mark request as delayed */
317	continue;
318	}
319	else
320	{
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	893	}
341		894
		895	unblock_sig ();
342	return count;	896	return count;
343	}
344
345	static void *aio_proc(void *arg);
346
347	static void start_thread (void)
348	{
349	sigset_t fullsigset, oldsigset;
350	pthread_t tid;
351	pthread_attr_t attr;
352
353	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357	sigfillset (&fullsigset);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361	started++;
362
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
364	}
365
366	static void req_send (aio_req req)
367	{
368	while (started < wanted && nreqs >= started)
369	start_thread ();
370
371	nreqs++;
372
373	pthread_mutex_lock (&reqlock);
374
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}
399
400	static void end_thread (void)
401	{
402	aio_req req;
403	Newz (0, req, 1, aio_cb);
404	req->type = REQ_QUIT;
405
406	req_send (req);
407	}
408
409	static void min_parallel (int nthreads)
410	{
411	if (wanted < nthreads)
412	wanted = nthreads;
413	}
414
415	static void max_parallel (int nthreads)
416	{
417	int cur = started;
418
419	if (wanted > nthreads)
420	wanted = nthreads;
421
422	while (cur > wanted)
423	{
424	end_thread ();
425	cur--;
426	}
427
428	while (started > wanted)
429	{
430	poll_wait ();
431	poll_cb ();
432	}
433	}
434
435	static void create_pipe ()
436	{
437	if (pipe (respipe))
438	croak ("unable to initialize result pipe");
439
440	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
441	croak ("cannot set result pipe to nonblocking mode");
442
443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
444	croak ("cannot set result pipe to nonblocking mode");
445	}	897	}
446		898
447	/*****************************************************************************/	899	/*****************************************************************************/
448	/* work around various missing functions */	900	/* work around various missing functions */
449		901
…		…
454	/*	906	/*
455	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
456	* 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,
457	* but that's your problem, not mine.	909	* but that's your problem, not mine.
458	*/	910	*/
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
460		912
461	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)
462	{	914	{
463	ssize_t res;	915	ssize_t res;
464	off_t ooffset;	916	off_t ooffset;
465		917
466	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);	921	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
472		924
473	return res;	925	return res;
474	}	926	}
475		927
476	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)
477	{	929	{
478	ssize_t res;	930	ssize_t res;
479	off_t ooffset;	931	off_t ooffset;
480		932
481	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);	936	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
487		939
488	return res;	940	return res;
489	}	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
490	#endif	970	#endif
491		971
492	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
493	# define fdatasync fsync	973	# define fdatasync fsync
494	#endif	974	#endif
495		975
496	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
498		978
499	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)
500	{	980	{
501	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
502		983
503	while (count > 0)	984	while (todo > 0)
504	{	985	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
506		987
507	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
508	offset += len;	989	offset += len;
509	count -= len;	990	todo -= len;
510	}	991	}
511		992
512	errno = 0;	993	errno = 0;
		994	return count;
513	}	995	}
		996
514	#endif	997	#endif
515		998
516	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
518		1001
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
520		1003
521	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)
522	{	1005	{
523	struct dirent *e;	1006	X_DIRENT *e;
524	int errorno;	1007	int errorno;
525		1008
526	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
527		1010
528	e = readdir (dirp);	1011	e = readdir (dirp);
529	errorno = errno;	1012	errorno = errno;
530		1013
531	if (e)	1014	if (e)
…		…
534	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
535	}	1018	}
536	else	1019	else
537	*res = 0;	1020	*res = 0;
538		1021
539	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
540		1023
541	errno = errorno;	1024	errno = errorno;
542	return e ? 0 : -1;	1025	return e ? 0 : -1;
543	}	1026	}
544	#endif	1027	#endif
545		1028
546	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
547	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)
548	{	1031	{
549	ssize_t res;	1032	ssize_t res;
550		1033
551	if (!count)	1034	if (!count)
552	return 0;	1035	return 0;
…		…
563	{	1046	{
564	off_t sbytes;	1047	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566		1049
567	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
569	res = sbytes;	1052	res = sbytes;
570	}	1053	}
571		1054
572	# elif __hpux	1055	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
601	#endif	1084	#endif
602	)	1085	)
603	)	1086	)
604	{	1087	{
605	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	1089	dBUF;
		1090
607	res = 0;	1091	res = 0;
608		1092
609	while (count)	1093	while (count)
610	{	1094	{
611	ssize_t cnt;	1095	ssize_t cnt;
612		1096
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		1098
615	if (cnt <= 0)	1099	if (cnt <= 0)
616	{	1100	{
617	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
618	break;	1102	break;
619	}	1103	}
620		1104
621	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
622		1106
623	if (cnt <= 0)	1107	if (cnt <= 0)
624	{	1108	{
625	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
626	break;	1110	break;
…		…
634		1118
635	return res;	1119	return res;
636	}	1120	}
637		1121
638	/* read a full directory */	1122	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)	1123	static void scandir_ (aio_req req, worker *self)
640	{	1124	{
641	DIR *dirp = opendir (path);	1125	DIR *dirp;
642	union	1126	union
643	{	1127	{
644	struct dirent d;	1128	X_DIRENT d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
646	} u;	1130	} *u;
647	struct dirent *entp;	1131	X_DIRENT *entp;
648	char *name, *names;	1132	char *name, *names;
649	int memlen = 4096;	1133	int memlen = 4096;
650	int memofs = 0;	1134	int memofs = 0;
651	int res = 0;	1135	int res = 0;
652	int errorno;
653		1136
654	if (!dirp)	1137	X_LOCK (wrklock);
655	return -1;	1138	self->dirp = dirp = opendir (req->ptr1);
656		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
657	names = malloc (memlen);	1141	req->ptr2 = names = malloc (memlen);
		1142	X_UNLOCK (wrklock);
		1143
		1144	if (dirp && u && names)
		1145	for (;;)
		1146	{
		1147	errno = 0;
		1148	readdir_r (dirp, &u->d, &entp);
		1149
		1150	if (!entp)
		1151	break;
		1152
		1153	name = entp->d_name;
		1154
		1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1156	{
		1157	int len = strlen (name) + 1;
		1158
		1159	res++;
		1160
		1161	while (memofs + len > memlen)
		1162	{
		1163	memlen *= 2;
		1164	X_LOCK (wrklock);
		1165	req->ptr2 = names = realloc (names, memlen);
		1166	X_UNLOCK (wrklock);
		1167
		1168	if (!names)
		1169	break;
		1170	}
		1171
		1172	memcpy (names + memofs, name, len);
		1173	memofs += len;
		1174	}
		1175	}
		1176
		1177	if (errno)
		1178	res = -1;
		1179
		1180	req->result = res;
		1181	}
		1182
		1183	/*****************************************************************************/
		1184
		1185	X_THREAD_PROC (aio_proc)
		1186	{
		1187	aio_req req;
		1188	struct timespec ts;
		1189	worker *self = (worker *)thr_arg;
		1190
		1191	/* try to distribute timeouts somewhat randomly */
		1192	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
658		1193
659	for (;;)	1194	for (;;)
660	{	1195	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);	1196	ts.tv_sec = time (0) + IDLE_TIMEOUT;
662		1197
663	if (!entp)	1198	X_LOCK (reqlock);
664	break;
665
666	name = entp->d_name;
667
668	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669	{
670	int len = strlen (name) + 1;
671
672	res++;
673
674	while (memofs + len > memlen)
675	{
676	memlen *= 2;
677	names = realloc (names, memlen);
678	if (!names)
679	break;
680	}
681
682	memcpy (names + memofs, name, len);
683	memofs += len;
684	}
685	}
686
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;
695	}
696
697	*namesp = (void *)names;
698	return res;
699	}
700
701	/*****************************************************************************/
702
703	static void *aio_proc (void *thr_arg)
704	{
705	aio_req req;
706	int type;
707
708	do
709	{
710	pthread_mutex_lock (&reqlock);
711		1199
712	for (;;)	1200	for (;;)
713	{	1201	{
714	req = reqs;	1202	self->req = req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		1203
722	if (req)	1204	if (req)
723	break;	1205	break;
724		1206
725	pthread_cond_wait (&reqwait, &reqlock);	1207	++idle;
		1208
		1209	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1210	== ETIMEDOUT)
		1211	{
		1212	if (idle > max_idle)
		1213	{
		1214	--idle;
		1215	X_UNLOCK (reqlock);
		1216	X_LOCK (wrklock);
		1217	--started;
		1218	X_UNLOCK (wrklock);
		1219	goto quit;
		1220	}
		1221
		1222	/* we are allowed to idle, so do so without any timeout */
		1223	X_COND_WAIT (reqwait, reqlock);
		1224	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1225	}
		1226
		1227	--idle;
726	}	1228	}
727		1229
728	pthread_mutex_unlock (&reqlock);	1230	--nready;
		1231
		1232	X_UNLOCK (reqlock);
729		1233
730	errno = 0; /* strictly unnecessary */	1234	errno = 0; /* strictly unnecessary */
731		1235
732	if (!req->cancelled)	1236	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	1237	switch (req->type)
734	{	1238	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1239	case REQ_READ: req->result = req->offs >= 0
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1240	? pread (req->int1, req->ptr1, req->size, req->offs)
		1241	: read (req->int1, req->ptr1, req->size); break;
		1242	case REQ_WRITE: req->result = req->offs >= 0
		1243	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1244	: write (req->int1, req->ptr1, req->size); break;
737		1245
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1246	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1247	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
740		1248
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1249	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1250	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1251	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
744		1252
		1253	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1254	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1255	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1256	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1257	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1258	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1259
745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1260	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
746	case REQ_CLOSE: req->result = close (req->fd); break;	1261	case REQ_CLOSE: req->result = close (req->int1); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1262	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1263	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1264	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1265	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1266	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1267	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1268	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1269	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
752		1270
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1271	case REQ_SYNC: req->result = 0; sync (); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	1272	case REQ_FSYNC: req->result = fsync (req->int1); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1273	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
756		1274
		1275	case REQ_READDIR: scandir_ (req, self); break;
		1276
757	case REQ_SLEEP:	1277	case REQ_BUSY:
		1278	#ifdef _WIN32
		1279	Sleep (req->nv1 * 1000.);
		1280	#else
758	{	1281	{
759	struct timeval tv;	1282	struct timeval tv;
760		1283
761	tv.tv_sec = req->fd;	1284	tv.tv_sec = req->nv1;
762	tv.tv_usec = req->fd2;	1285	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
763		1286
764	req->result = select (0, 0, 0, 0, &tv);	1287	req->result = select (0, 0, 0, 0, &tv);
765	}	1288	}
		1289	#endif
		1290	break;
		1291
		1292	case REQ_UTIME:
		1293	case REQ_FUTIME:
		1294	{
		1295	struct timeval tv[2];
		1296	struct timeval *times;
		1297
		1298	if (req->nv1 != -1. || req->nv2 != -1.)
		1299	{
		1300	tv[0].tv_sec = req->nv1;
		1301	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1302	tv[1].tv_sec = req->nv2;
		1303	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1304
		1305	times = tv;
		1306	}
		1307	else
		1308	times = 0;
		1309
		1310
		1311	req->result = req->type == REQ_FUTIME
		1312	? futimes (req->int1, times)
		1313	: utimes (req->ptr1, times);
		1314	}
		1315
		1316	case REQ_GROUP:
		1317	case REQ_NOP:
		1318	break;
766		1319
767	case REQ_QUIT:	1320	case REQ_QUIT:
768	break;	1321	goto quit;
769		1322
770	default:	1323	default:
771	req->result = ENOSYS;	1324	req->result = -1;
772	break;	1325	break;
773	}	1326	}
774		1327
775	req->errorno = errno;	1328	req->errorno = errno;
776		1329
777	pthread_mutex_lock (&reslock);	1330	X_LOCK (reslock);
778		1331
779	req->next = 0;	1332	++npending;
780		1333
781	if (rese)	1334	if (!reqq_push (&res_queue, req))
782	{	1335	{
783	rese->next = req;	1336	/* write a dummy byte to the pipe so fh becomes ready */
784	rese = req;	1337	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1338
		1339	/* optionally signal the main thread asynchronously */
		1340	if (main_sig)
		1341	pthread_kill (main_tid, main_sig);
785	}	1342	}
786	else
787	{
788	rese = ress = req;
789		1343
790	/* write a dummy byte to the pipe so fh becomes ready */	1344	self->req = 0;
791	write (respipe [1], &respipe, 1);	1345	worker_clear (self);
792	}
793		1346
794	pthread_mutex_unlock (&reslock);	1347	X_UNLOCK (reslock);
795	}	1348	}
796	while (type != REQ_QUIT);	1349
		1350	quit:
		1351	X_LOCK (wrklock);
		1352	worker_free (self);
		1353	X_UNLOCK (wrklock);
797		1354
798	return 0;	1355	return 0;
799	}	1356	}
800		1357
801	/*****************************************************************************/	1358	/*****************************************************************************/
802		1359
803	static void atfork_prepare (void)	1360	static void atfork_prepare (void)
804	{	1361	{
805	pthread_mutex_lock (&reqlock);	1362	X_LOCK (wrklock);
806	pthread_mutex_lock (&reslock);	1363	X_LOCK (reqlock);
		1364	X_LOCK (reslock);
807	#if !HAVE_PREADWRITE	1365	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);	1366	X_LOCK (preadwritelock);
809	#endif	1367	#endif
810	#if !HAVE_READDIR_R	1368	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);	1369	X_LOCK (readdirlock);
812	#endif	1370	#endif
813	}	1371	}
814		1372
815	static void atfork_parent (void)	1373	static void atfork_parent (void)
816	{	1374	{
817	#if !HAVE_READDIR_R	1375	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);	1376	X_UNLOCK (readdirlock);
819	#endif	1377	#endif
820	#if !HAVE_PREADWRITE	1378	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);	1379	X_UNLOCK (preadwritelock);
822	#endif	1380	#endif
823	pthread_mutex_unlock (&reslock);	1381	X_UNLOCK (reslock);
824	pthread_mutex_unlock (&reqlock);	1382	X_UNLOCK (reqlock);
		1383	X_UNLOCK (wrklock);
825	}	1384	}
826		1385
827	static void atfork_child (void)	1386	static void atfork_child (void)
828	{	1387	{
829	aio_req prv;	1388	aio_req prv;
830		1389
831	started = 0;	1390	while (prv = reqq_shift (&req_queue))
		1391	req_destroy (prv);
832		1392
833	while (reqs)	1393	while (prv = reqq_shift (&res_queue))
		1394	req_destroy (prv);
		1395
		1396	while (wrk_first.next != &wrk_first)
834	{	1397	{
835	prv = reqs;	1398	worker *wrk = wrk_first.next;
836	reqs = prv->next;	1399
		1400	if (wrk->req)
		1401	req_destroy (wrk->req);
		1402
		1403	worker_clear (wrk);
837	req_free (prv);	1404	worker_free (wrk);
838	}	1405	}
839		1406
840	reqs = reqe = 0;	1407	started = 0;
841		1408	idle = 0;
842	while (ress)	1409	nreqs = 0;
843	{	1410	nready = 0;
844	prv = ress;	1411	npending = 0;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850		1412
851	close (respipe [0]);
852	close (respipe [1]);
853	create_pipe ();	1413	create_respipe ();
854		1414
855	atfork_parent ();	1415	atfork_parent ();
856	}	1416	}
857		1417
858	#define dREQ \	1418	#define dREQ \
859	aio_req req; \	1419	aio_req req; \
		1420	int req_pri = next_pri; \
		1421	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	1422	\
861	if (SvOK (callback) && !SvROK (callback)) \	1423	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	1424	croak ("callback must be undef or of reference type"); \
863	\	1425	\
864	Newz (0, req, 1, aio_cb); \	1426	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1427	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1428	croak ("out of memory during aio_req allocation"); \
867	\	1429	\
868	req->callback = newSVsv (callback)	1430	req->callback = newSVsv (callback); \
		1431	req->pri = req_pri
869		1432
870	#define REQ_SEND \	1433	#define REQ_SEND \
871	req_send (req); \	1434	req_send (req); \
872	\	1435	\
873	if (GIMME_V != G_VOID) \	1436	if (GIMME_V != G_VOID) \
…		…
877		1440
878	PROTOTYPES: ENABLE	1441	PROTOTYPES: ENABLE
879		1442
880	BOOT:	1443	BOOT:
881	{	1444	{
882	HV *stash = gv_stashpv ("IO::AIO", 1);	1445	stash = gv_stashpv ("IO::AIO", 1);
		1446
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1452	#ifdef _WIN32
		1453	X_MUTEX_CHECK (wrklock);
		1454	X_MUTEX_CHECK (reslock);
		1455	X_MUTEX_CHECK (reqlock);
		1456	X_MUTEX_CHECK (reqwait);
		1457	X_MUTEX_CHECK (preadwritelock);
		1458	X_MUTEX_CHECK (readdirlock);
886		1459
887	create_pipe ();	1460	X_COND_CHECK (reqwait);
		1461	#else
		1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1464	#endif
		1465
		1466	create_respipe ();
		1467
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
889	}	1469	}
890		1470
891	void	1471	void
892	min_parallel (nthreads)	1472	max_poll_reqs (int nreqs)
893	int nthreads
894	PROTOTYPE: $	1473	PROTOTYPE: $
		1474	CODE:
		1475	max_poll_reqs = nreqs;
895		1476
896	void	1477	void
897	max_parallel (nthreads)	1478	max_poll_time (double nseconds)
898	int nthreads
899	PROTOTYPE: $	1479	PROTOTYPE: $
		1480	CODE:
		1481	max_poll_time = nseconds * AIO_TICKS;
		1482
		1483	void
		1484	min_parallel (int nthreads)
		1485	PROTOTYPE: $
		1486
		1487	void
		1488	max_parallel (int nthreads)
		1489	PROTOTYPE: $
		1490
		1491	void
		1492	max_idle (int nthreads)
		1493	PROTOTYPE: $
		1494	CODE:
		1495	set_max_idle (nthreads);
900		1496
901	int	1497	int
902	max_outstanding (nreqs)	1498	max_outstanding (int maxreqs)
903	int nreqs	1499	PROTOTYPE: $
904	PROTOTYPE: $
905	CODE:	1500	CODE:
906	RETVAL = max_outstanding;	1501	RETVAL = max_outstanding;
907	max_outstanding = nreqs;	1502	max_outstanding = maxreqs;
		1503	OUTPUT:
		1504	RETVAL
908		1505
909	void	1506	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
911	SV * pathname
912	int flags
913	int mode
914	SV * callback
915	PROTOTYPE: $$$;$	1508	PROTOTYPE: $$$;$
916	PPCODE:	1509	PPCODE:
917	{	1510	{
918	dREQ;	1511	dREQ;
919		1512
920	req->type = REQ_OPEN;	1513	req->type = REQ_OPEN;
921	req->data = newSVsv (pathname);	1514	req->sv1 = newSVsv (pathname);
922	req->dataptr = SvPVbyte_nolen (req->data);	1515	req->ptr1 = SvPVbyte_nolen (req->sv1);
923	req->fd = flags;	1516	req->int1 = flags;
924	req->mode = mode;	1517	req->mode = mode;
925		1518
926	REQ_SEND;	1519	REQ_SEND;
927	}	1520	}
928		1521
929	void	1522	void
930	aio_close (fh,callback=&PL_sv_undef)	1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$	1524	PROTOTYPE: $;$
934	ALIAS:	1525	ALIAS:
935	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC	1526	aio_fsync = REQ_FSYNC
937	aio_fdatasync = REQ_FDATASYNC	1527	aio_fdatasync = REQ_FDATASYNC
938	PPCODE:	1528	PPCODE:
939	{	1529	{
940	dREQ;	1530	dREQ;
941		1531
942	req->type = ix;	1532	req->type = ix;
943	req->fh = newSVsv (fh);	1533	req->sv1 = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
945		1535
946	REQ_SEND (req);	1536	REQ_SEND (req);
947	}	1537	}
948		1538
		1539	int
		1540	_dup (int fd)
		1541	PROTOTYPE: $
		1542	CODE:
		1543	RETVAL = dup (fd);
		1544	OUTPUT:
		1545	RETVAL
		1546
949	void	1547	void
		1548	_aio_close (int fd, SV *callback=&PL_sv_undef)
		1549	PROTOTYPE: $;$
		1550	PPCODE:
		1551	{
		1552	dREQ;
		1553
		1554	req->type = REQ_CLOSE;
		1555	req->int1 = fd;
		1556
		1557	REQ_SEND (req);
		1558	}
		1559
		1560	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
951	SV * fh
952	UV offset
953	UV length
954	SV * data
955	UV dataoffset
956	SV * callback
957	ALIAS:	1562	ALIAS:
958	aio_read = REQ_READ	1563	aio_read = REQ_READ
959	aio_write = REQ_WRITE	1564	aio_write = REQ_WRITE
960	PROTOTYPE: $$$$$;$	1565	PROTOTYPE: $$$$$;$
961	PPCODE:	1566	PPCODE:
962	{	1567	{
963	aio_req req;
964	STRLEN svlen;	1568	STRLEN svlen;
965	char *svptr = SvPVbyte (data, svlen);	1569	char *svptr = SvPVbyte (data, svlen);
		1570	UV len = SvUV (length);
966		1571
967	SvUPGRADE (data, SVt_PV);	1572	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);	1573	SvPOK_on (data);
969		1574
970	if (dataoffset < 0)	1575	if (dataoffset < 0)
971	dataoffset += svlen;	1576	dataoffset += svlen;
972		1577
973	if (dataoffset < 0 || dataoffset > svlen)	1578	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	1579	croak ("dataoffset outside of data scalar");
975		1580
976	if (ix == REQ_WRITE)	1581	if (ix == REQ_WRITE)
977	{	1582	{
978	/* write: check length and adjust. */	1583	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	1584	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	1585	len = svlen - dataoffset;
981	}	1586	}
982	else	1587	else
983	{	1588	{
984	/* read: grow scalar as necessary */	1589	/* read: grow scalar as necessary */
985	svptr = SvGROW (data, length + dataoffset);	1590	svptr = SvGROW (data, len + dataoffset + 1);
986	}	1591	}
987		1592
988	if (length < 0)	1593	if (len < 0)
989	croak ("length must not be negative");	1594	croak ("length must not be negative");
990		1595
991	{	1596	{
992	dREQ;	1597	dREQ;
993		1598
994	req->type = ix;	1599	req->type = ix;
995	req->fh = newSVsv (fh);	1600	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
997	: IoOFP (sv_2io (fh)));	1602	: IoOFP (sv_2io (fh)));
		1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	1604	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	1605	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	1606	req->ptr1 = (char *)svptr + dataoffset;
		1607	req->stroffset = dataoffset;
1002		1608
1003	if (!SvREADONLY (data))	1609	if (!SvREADONLY (data))
1004	{	1610	{
1005	SvREADONLY_on (data);	1611	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	1612	req->flags |= FLAG_SV2_RO_OFF;
1007	}	1613	}
1008		1614
1009	REQ_SEND;	1615	REQ_SEND;
1010	}	1616	}
1011	}	1617	}
1012		1618
1013	void	1619	void
		1620	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1621	PROTOTYPE: $$;$
		1622	PPCODE:
		1623	{
		1624	SV *data;
		1625	dREQ;
		1626
		1627	data = newSV (NAME_MAX);
		1628	SvPOK_on (data);
		1629
		1630	req->type = REQ_READLINK;
		1631	req->sv1 = newSVsv (path);
		1632	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1633	req->sv2 = data;
		1634	req->ptr1 = SvPVbyte_nolen (data);
		1635
		1636	REQ_SEND;
		1637	}
		1638
		1639	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1015	SV * out_fh
1016	SV * in_fh
1017	UV in_offset
1018	UV length
1019	SV * callback
1020	PROTOTYPE: $$$$;$	1641	PROTOTYPE: $$$$;$
1021	PPCODE:	1642	PPCODE:
1022	{	1643	{
1023	dREQ;	1644	dREQ;
1024		1645
1025	req->type = REQ_SENDFILE;	1646	req->type = REQ_SENDFILE;
1026	req->fh = newSVsv (out_fh);	1647	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1028	req->fh2 = newSVsv (in_fh);	1649	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1030	req->offset = in_offset;	1651	req->offs = SvVAL64 (in_offset);
1031	req->length = length;	1652	req->size = length;
1032		1653
1033	REQ_SEND;	1654	REQ_SEND;
1034	}	1655	}
1035		1656
1036	void	1657	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$	1659	PROTOTYPE: $$$;$
1043	PPCODE:	1660	PPCODE:
1044	{	1661	{
1045	dREQ;	1662	dREQ;
1046		1663
1047	req->type = REQ_READAHEAD;	1664	req->type = REQ_READAHEAD;
1048	req->fh = newSVsv (fh);	1665	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1050	req->offset = offset;	1667	req->offs = SvVAL64 (offset);
1051	req->length = length;	1668	req->size = length;
1052		1669
1053	REQ_SEND;	1670	REQ_SEND;
1054	}	1671	}
1055		1672
1056	void	1673	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	1675	ALIAS:
1061	aio_stat = REQ_STAT	1676	aio_stat = REQ_STAT
1062	aio_lstat = REQ_LSTAT	1677	aio_lstat = REQ_LSTAT
1063	PPCODE:	1678	PPCODE:
1064	{	1679	{
1065	dREQ;	1680	dREQ;
1066		1681
1067	New (0, req->statdata, 1, Stat_t);	1682	req->ptr2 = malloc (sizeof (Stat_t));
1068	if (!req->statdata)	1683	if (!req->ptr2)
1069	{	1684	{
1070	req_free (req);	1685	req_destroy (req);
1071	croak ("out of memory during aio_req->statdata allocation");	1686	croak ("out of memory during aio_stat statdata allocation");
1072	}	1687	}
		1688
		1689	req->flags |= FLAG_PTR2_FREE;
		1690	req->sv1 = newSVsv (fh_or_path);
1073		1691
1074	if (SvPOK (fh_or_path))	1692	if (SvPOK (fh_or_path))
1075	{	1693	{
1076	req->type = ix;	1694	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);	1695	req->ptr1 = SvPVbyte_nolen (req->sv1);
1079	}	1696	}
1080	else	1697	else
1081	{	1698	{
1082	req->type = REQ_FSTAT;	1699	req->type = REQ_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}	1701	}
1086		1702
1087	REQ_SEND;	1703	REQ_SEND;
1088	}	1704	}
1089		1705
1090	void	1706	void
		1707	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
		1711
		1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1714	req->sv1 = newSVsv (fh_or_path);
		1715
		1716	if (SvPOK (fh_or_path))
		1717	{
		1718	req->type = REQ_UTIME;
		1719	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1720	}
		1721	else
		1722	{
		1723	req->type = REQ_FUTIME;
		1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1725	}
		1726
		1727	REQ_SEND;
		1728	}
		1729
		1730	void
		1731	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1732	PPCODE:
		1733	{
		1734	dREQ;
		1735
		1736	req->sv1 = newSVsv (fh_or_path);
		1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1738
		1739	if (SvPOK (fh_or_path))
		1740	{
		1741	req->type = REQ_TRUNCATE;
		1742	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1743	}
		1744	else
		1745	{
		1746	req->type = REQ_FTRUNCATE;
		1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1748	}
		1749
		1750	REQ_SEND;
		1751	}
		1752
		1753	void
		1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1755	PPCODE:
		1756	{
		1757	dREQ;
		1758
		1759	req->mode = mode;
		1760	req->sv1 = newSVsv (fh_or_path);
		1761
		1762	if (SvPOK (fh_or_path))
		1763	{
		1764	req->type = REQ_CHMOD;
		1765	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1766	}
		1767	else
		1768	{
		1769	req->type = REQ_FCHMOD;
		1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1771	}
		1772
		1773	REQ_SEND;
		1774	}
		1775
		1776	void
		1777	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1778	PPCODE:
		1779	{
		1780	dREQ;
		1781
		1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1784	req->sv1 = newSVsv (fh_or_path);
		1785
		1786	if (SvPOK (fh_or_path))
		1787	{
		1788	req->type = REQ_CHOWN;
		1789	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1790	}
		1791	else
		1792	{
		1793	req->type = REQ_FCHOWN;
		1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1795	}
		1796
		1797	REQ_SEND;
		1798	}
		1799
		1800	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	1802	ALIAS:
1095	aio_unlink = REQ_UNLINK	1803	aio_unlink = REQ_UNLINK
1096	aio_rmdir = REQ_RMDIR	1804	aio_rmdir = REQ_RMDIR
1097	aio_readdir = REQ_READDIR	1805	aio_readdir = REQ_READDIR
1098	PPCODE:	1806	PPCODE:
1099	{	1807	{
1100	dREQ;	1808	dREQ;
1101		1809
1102	req->type = ix;	1810	req->type = ix;
1103	req->data = newSVsv (pathname);	1811	req->sv1 = newSVsv (pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	1812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1813
		1814	REQ_SEND;
		1815	}
		1816
		1817	void
		1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1819	PPCODE:
		1820	{
		1821	dREQ;
1105		1822
		1823	req->type = REQ_MKDIR;
		1824	req->sv1 = newSVsv (pathname);
		1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1826	req->mode = mode;
		1827
1106	REQ_SEND;	1828	REQ_SEND;
1107	}	1829	}
1108		1830
1109	void	1831	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:	1833	ALIAS:
1115	aio_link = REQ_LINK	1834	aio_link = REQ_LINK
1116	aio_symlink = REQ_SYMLINK	1835	aio_symlink = REQ_SYMLINK
1117	aio_rename = REQ_RENAME	1836	aio_rename = REQ_RENAME
1118	PPCODE:	1837	PPCODE:
1119	{	1838	{
1120	dREQ;	1839	dREQ;
1121		1840
1122	req->type = ix;	1841	req->type = ix;
1123	req->fh = newSVsv (oldpath);	1842	req->sv2 = newSVsv (oldpath);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	1843	req->ptr2 = SvPVbyte_nolen (req->sv2);
1125	req->data = newSVsv (newpath);	1844	req->sv1 = newSVsv (newpath);
1126	req->dataptr = SvPVbyte_nolen (req->data);	1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1127		1846
1128	REQ_SEND;	1847	REQ_SEND;
1129	}	1848	}
1130		1849
1131	void	1850	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1852	PPCODE:
1136	{	1853	{
1137	dREQ;	1854	dREQ;
1138		1855
1139	req->type = REQ_SLEEP;	1856	req->type = REQ_MKNOD;
1140	req->fd = delay < 0. ? 0 : delay;	1857	req->sv1 = newSVsv (pathname);
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1858	req->ptr1 = SvPVbyte_nolen (req->sv1);
1142		1859	req->mode = (mode_t)mode;
		1860	req->offs = dev;
		1861
1143	REQ_SEND;	1862	REQ_SEND;
1144	}	1863	}
1145		1864
1146	void	1865	void
		1866	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1867	PPCODE:
		1868	{
		1869	dREQ;
		1870
		1871	req->type = REQ_BUSY;
		1872	req->nv1 = delay < 0. ? 0. : delay;
		1873
		1874	REQ_SEND;
		1875	}
		1876
		1877	void
1147	aio_group (callback=&PL_sv_undef)	1878	aio_group (SV *callback=&PL_sv_undef)
1148	SV * callback
1149	PROTOTYPE: ;$	1879	PROTOTYPE: ;$
1150	PPCODE:	1880	PPCODE:
1151	{	1881	{
1152	dREQ;	1882	dREQ;
		1883
1153	req->type = REQ_GROUP;	1884	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1885
1157	req_send (req);	1886	req_send (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	1888	}
		1889
		1890	void
		1891	aio_nop (SV *callback=&PL_sv_undef)
		1892	ALIAS:
		1893	aio_nop = REQ_NOP
		1894	aio_sync = REQ_SYNC
		1895	PPCODE:
		1896	{
		1897	dREQ;
		1898
		1899	req->type = ix;
		1900
		1901	REQ_SEND;
		1902	}
		1903
		1904	int
		1905	aioreq_pri (int pri = 0)
		1906	PROTOTYPE: ;$
		1907	CODE:
		1908	RETVAL = next_pri - PRI_BIAS;
		1909	if (items > 0)
		1910	{
		1911	if (pri < PRI_MIN) pri = PRI_MIN;
		1912	if (pri > PRI_MAX) pri = PRI_MAX;
		1913	next_pri = pri + PRI_BIAS;
		1914	}
		1915	OUTPUT:
		1916	RETVAL
		1917
		1918	void
		1919	aioreq_nice (int nice = 0)
		1920	CODE:
		1921	nice = next_pri - nice;
		1922	if (nice < PRI_MIN) nice = PRI_MIN;
		1923	if (nice > PRI_MAX) nice = PRI_MAX;
		1924	next_pri = nice + PRI_BIAS;
1160		1925
1161	void	1926	void
1162	flush ()	1927	flush ()
1163	PROTOTYPE:	1928	PROTOTYPE:
1164	CODE:	1929	CODE:
…		…
1166	{	1931	{
1167	poll_wait ();	1932	poll_wait ();
1168	poll_cb ();	1933	poll_cb ();
1169	}	1934	}
1170		1935
1171	void	1936	int
1172	poll()	1937	poll()
1173	PROTOTYPE:	1938	PROTOTYPE:
1174	CODE:	1939	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();	1940	poll_wait ();
1178	poll_cb ();	1941	RETVAL = poll_cb ();
1179	}	1942	OUTPUT:
		1943	RETVAL
1180		1944
1181	int	1945	int
1182	poll_fileno()	1946	poll_fileno()
1183	PROTOTYPE:	1947	PROTOTYPE:
1184	CODE:	1948	CODE:
…		…
1196		1960
1197	void	1961	void
1198	poll_wait()	1962	poll_wait()
1199	PROTOTYPE:	1963	PROTOTYPE:
1200	CODE:	1964	CODE:
1201	if (nreqs)
1202	poll_wait ();	1965	poll_wait ();
		1966
		1967	void
		1968	setsig (int signum = SIGIO)
		1969	PROTOTYPE: ;$
		1970	CODE:
		1971	{
		1972	if (block_sig_level)
		1973	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1974
		1975	X_LOCK (reslock);
		1976	main_tid = pthread_self ();
		1977	main_sig = signum;
		1978	X_UNLOCK (reslock);
		1979
		1980	if (main_sig && npending)
		1981	pthread_kill (main_tid, main_sig);
		1982	}
		1983
		1984	void
		1985	aio_block (SV *cb)
		1986	PROTOTYPE: &
		1987	PPCODE:
		1988	{
		1989	int count;
		1990
		1991	block_sig ();
		1992	PUSHMARK (SP);
		1993	PUTBACK;
		1994	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1995	unblock_sig ();
		1996
		1997	if (SvTRUE (ERRSV))
		1998	croak (0);
		1999
		2000	XSRETURN (count);
		2001	}
1203		2002
1204	int	2003	int
1205	nreqs()	2004	nreqs()
1206	PROTOTYPE:	2005	PROTOTYPE:
1207	CODE:	2006	CODE:
1208	RETVAL = nreqs;	2007	RETVAL = nreqs;
1209	OUTPUT:	2008	OUTPUT:
1210	RETVAL	2009	RETVAL
1211		2010
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2011	int
1213		2012	nready()
1214	void
1215	cancel (aio_req_ornot req)
1216	PROTOTYPE:	2013	PROTOTYPE:
1217	CODE:	2014	CODE:
		2015	RETVAL = get_nready ();
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	npending()
		2021	PROTOTYPE:
		2022	CODE:
		2023	RETVAL = get_npending ();
		2024	OUTPUT:
		2025	RETVAL
		2026
		2027	int
		2028	nthreads()
		2029	PROTOTYPE:
		2030	CODE:
		2031	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2032	RETVAL = started;
		2033	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2034	OUTPUT:
		2035	RETVAL
		2036
		2037	PROTOTYPES: DISABLE
		2038
		2039	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2040
		2041	void
		2042	cancel (aio_req_ornot req)
		2043	CODE:
1218	req_cancel (req);	2044	req_cancel (req);
1219		2045
		2046	void
		2047	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		2048	CODE:
		2049	SvREFCNT_dec (req->callback);
		2050	req->callback = newSVsv (callback);
		2051
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2052	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		2053
1222	void	2054	void
1223	add (aio_req grp, ...)	2055	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	2056	PPCODE:
1226	{	2057	{
1227	int i;	2058	int i;
		2059	aio_req req;
		2060
		2061	if (main_sig && !block_sig_level)
		2062	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2063
		2064	if (grp->int1 == 2)
		2065	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		2066
1229	for (i = 1; i < items; ++i )	2067	for (i = 1; i < items; ++i )
1230	{	2068	{
1231	if (GIMME_V != G_VOID)	2069	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2070	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		2071
1234	aio_req req = SvAIO_REQ (ST (i));	2072	req = SvAIO_REQ (ST (i));
1235	printf ("req = %p\n", req);//D
1236		2073
1237	if (req)	2074	if (req)
1238	{	2075	{
1239	req->grp_prev = grp;	2076	++grp->size;
1240	req->grp_next = grp->grp_next;
1241	grp->grp_next->grp_prev = req;
1242	grp->grp_next = req;
1243
1244	req->grp = grp;	2077	req->grp = grp;
		2078
		2079	req->grp_prev = 0;
		2080	req->grp_next = grp->grp_first;
		2081
		2082	if (grp->grp_first)
		2083	grp->grp_first->grp_prev = req;
		2084
		2085	grp->grp_first = req;
1245	}	2086	}
1246	}	2087	}
1247	}	2088	}
1248		2089
		2090	void
		2091	cancel_subs (aio_req_ornot req)
		2092	CODE:
		2093	req_cancel_subs (req);
		2094
		2095	void
		2096	result (aio_req grp, ...)
		2097	CODE:
		2098	{
		2099	int i;
		2100	AV *av;
		2101
		2102	grp->errorno = errno;
		2103
		2104	av = newAV ();
		2105
		2106	for (i = 1; i < items; ++i )
		2107	av_push (av, newSVsv (ST (i)));
		2108
		2109	SvREFCNT_dec (grp->sv1);
		2110	grp->sv1 = (SV *)av;
		2111	}
		2112
		2113	void
		2114	errno (aio_req grp, int errorno = errno)
		2115	CODE:
		2116	grp->errorno = errorno;
		2117
		2118	void
		2119	limit (aio_req grp, int limit)
		2120	CODE:
		2121	grp->int2 = limit;
		2122	aio_grp_feed (grp);
		2123
		2124	void
		2125	feed (aio_req grp, SV *callback=&PL_sv_undef)
		2126	CODE:
		2127	{
		2128	SvREFCNT_dec (grp->sv2);
		2129	grp->sv2 = newSVsv (callback);
		2130
		2131	if (grp->int2 <= 0)
		2132	grp->int2 = 2;
		2133
		2134	aio_grp_feed (grp);
		2135	}
		2136

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