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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 1.105 by root, Sun Jul 8 11:12:15 2007 UTC

1	#define _REENTRANT 1	1	#include "xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define SIGIO 0
		21	typedef Direntry_t X_DIRENT;
		22	#undef malloc
		23	#undef free
		24
		25	// perl overrides all those nice win32 functions
		26	# undef open
		27	# undef read
		28	# undef write
		29	# undef send
		30	# undef recv
		31	# undef stat
		32	# undef fstat
		33	# define lstat stat
		34	# undef truncate
		35	# undef ftruncate
		36	# undef open
		37	# undef close
		38	# undef unlink
		39	# undef rmdir
		40	# undef rename
		41	# undef lseek
		42
		43	# define chown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchown(a,b,c) (errno = ENOSYS, -1)
		45	# define fchmod(a,b) (errno = ENOSYS, -1)
		46	# define symlink(a,b) (errno = ENOSYS, -1)
		47	# define readlink(a,b,c) (errno = ENOSYS, -1)
		48	# define mknod(a,b,c) (errno = ENOSYS, -1)
		49	# define truncate(a,b) (errno = ENOSYS, -1)
		50	# define ftruncate(fd,o) chsize ((fd), (o))
		51	# define fsync(fd) _commit (fd)
		52	# define opendir(fd) (errno = ENOSYS, 0)
		53	# define readdir(fd) (errno = ENOSYS, -1)
		54	# define closedir(fd) (errno = ENOSYS, -1)
		55	# define mkdir(a,b) mkdir (a)
		56
		57	#else
		58
		59	# include "autoconf/config.h"
		60	# include <sys/time.h>
		61	# include <sys/select.h>
		62	# include <unistd.h>
		63	# include <utime.h>
		64	# include <signal.h>
		65	typedef struct dirent X_DIRENT;
		66
		67	#endif
23		68
24	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
25	# if __linux	70	# if __linux
26	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
27	# elif __freebsd	72	# elif __freebsd
…		…
34	# else	79	# else
35	# error sendfile support requested but not available	80	# error sendfile support requested but not available
36	# endif	81	# endif
37	#endif	82	#endif
38		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
39	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	88	#ifndef NAME_MAX
41	# define NAME_MAX 4096	89	# define NAME_MAX 4096
42	#endif	90	#endif
43		91
44	#if __ia64	92	/* buffer size for various temporary buffers */
45	# define STACKSIZE 65536	93	#define AIO_BUFSIZE 65536
		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
46	#else	98	#else
47	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
48	#endif	100	#endif
		101
		102	#define dBUF \
		103	char *aio_buf; \
		104	X_LOCK (wrklock); \
		105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		106	X_UNLOCK (wrklock); \
		107	if (!aio_buf) \
		108	return -1;
		109
		110	typedef SV SV8; /* byte-sv, used for argument-checking */
49		111
50	enum {	112	enum {
51	REQ_QUIT,	113	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		118	REQ_TRUNCATE, REQ_FTRUNCATE,
		119	REQ_UTIME, REQ_FUTIME,
		120	REQ_CHMOD, REQ_FCHMOD,
		121	REQ_CHOWN, REQ_FCHOWN,
56	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_SLEEP,	126	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	127	REQ_BUSY,
62	};	128	};
63		129
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	131	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		132
67	typedef struct aio_cb	133	typedef struct aio_cb
68	{	134	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
72		136
		137	SV *callback;
		138	SV *sv1, *sv2;
		139	void *ptr1, *ptr2;
		140	off_t offs;
		141	size_t size;
		142	ssize_t result;
		143	double nv1, nv2;
		144
		145	STRLEN stroffset;
		146	int type;
		147	int int1, int2, int3;
		148	int errorno;
		149	mode_t mode; /* open */
		150
		151	unsigned char flags;
		152	unsigned char pri;
		153
73	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
74		155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;	156	} aio_cb;
		157
		158	enum {
		159	FLAG_CANCELLED = 0x01, /* request was cancelled */
		160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
		162	};
90		163
91	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
93		166
		167	enum {
		168	PRI_MIN = -4,
		169	PRI_MAX = 4,
		170
		171	DEFAULT_PRI = 0,
		172	PRI_BIAS = -PRI_MIN,
		173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		174	};
		175
		176	#define AIO_TICKS ((1000000 + 1023) >> 10)
		177
		178	static unsigned int max_poll_time = 0;
		179	static unsigned int max_poll_reqs = 0;
		180
		181	/* calculcate time difference in ~1/AIO_TICKS of a second */
		182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		183	{
		184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		186	}
		187
		188	static thread_t main_tid;
		189	static int main_sig;
		190	static int block_sig_level;
		191
		192	void block_sig ()
		193	{
		194	sigset_t ss;
		195
		196	if (block_sig_level++)
		197	return;
		198
		199	if (!main_sig)
		200	return;
		201
		202	sigemptyset (&ss);
		203	sigaddset (&ss, main_sig);
		204	pthread_sigmask (SIG_BLOCK, &ss, 0);
		205	}
		206
		207	void unblock_sig ()
		208	{
		209	sigset_t ss;
		210
		211	if (--block_sig_level)
		212	return;
		213
		214	if (!main_sig)
		215	return;
		216
		217	sigemptyset (&ss);
		218	sigaddset (&ss, main_sig);
		219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		220	}
		221
		222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		223
94	static int started, wanted;	224	static unsigned int started, idle, wanted;
95	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];
98		225
		226	/* worker threads management */
		227	static mutex_t wrklock = X_MUTEX_INIT;
		228
		229	typedef struct worker {
		230	/* locked by wrklock */
		231	struct worker *prev, *next;
		232
		233	thread_t tid;
		234
		235	/* locked by reslock, reqlock or wrklock */
		236	aio_req req; /* currently processed request */
		237	void *dbuf;
		238	DIR *dirp;
		239	} worker;
		240
		241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		242
		243	static void worker_clear (worker *wrk)
		244	{
		245	if (wrk->dirp)
		246	{
		247	closedir (wrk->dirp);
		248	wrk->dirp = 0;
		249	}
		250
		251	if (wrk->dbuf)
		252	{
		253	free (wrk->dbuf);
		254	wrk->dbuf = 0;
		255	}
		256	}
		257
		258	static void worker_free (worker *wrk)
		259	{
		260	wrk->next->prev = wrk->prev;
		261	wrk->prev->next = wrk->next;
		262
		263	free (wrk);
		264	}
		265
		266	static volatile unsigned int nreqs, nready, npending;
		267	static volatile unsigned int max_idle = 4;
		268	static volatile unsigned int max_outstanding = 0xffffffff;
		269	static int respipe [2], respipe_osf [2];
		270
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	271	static mutex_t reslock = X_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	272	static mutex_t reqlock = X_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	273	static cond_t reqwait = X_COND_INIT;
102		274
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	275	#if WORDACCESS_UNSAFE
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		276
		277	static unsigned int get_nready ()
		278	{
		279	unsigned int retval;
		280
		281	X_LOCK (reqlock);
		282	retval = nready;
		283	X_UNLOCK (reqlock);
		284
		285	return retval;
		286	}
		287
		288	static unsigned int get_npending ()
		289	{
		290	unsigned int retval;
		291
		292	X_LOCK (reslock);
		293	retval = npending;
		294	X_UNLOCK (reslock);
		295
		296	return retval;
		297	}
		298
		299	static unsigned int get_nthreads ()
		300	{
		301	unsigned int retval;
		302
		303	X_LOCK (wrklock);
		304	retval = started;
		305	X_UNLOCK (wrklock);
		306
		307	return retval;
		308	}
		309
		310	#else
		311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
		316	#endif
		317
		318	/*
		319	* a somewhat faster data structure might be nice, but
		320	* with 8 priorities this actually needs <20 insns
		321	* per shift, the most expensive operation.
		322	*/
		323	typedef struct {
		324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		325	int size;
		326	} reqq;
		327
		328	static reqq req_queue;
		329	static reqq res_queue;
		330
		331	int reqq_push (reqq *q, aio_req req)
		332	{
		333	int pri = req->pri;
		334	req->next = 0;
		335
		336	if (q->qe[pri])
		337	{
		338	q->qe[pri]->next = req;
		339	q->qe[pri] = req;
		340	}
		341	else
		342	q->qe[pri] = q->qs[pri] = req;
		343
		344	return q->size++;
		345	}
		346
		347	aio_req reqq_shift (reqq *q)
		348	{
		349	int pri;
		350
		351	if (!q->size)
		352	return 0;
		353
		354	--q->size;
		355
		356	for (pri = NUM_PRI; pri--; )
		357	{
		358	aio_req req = q->qs[pri];
		359
		360	if (req)
		361	{
		362	if (!(q->qs[pri] = req->next))
		363	q->qe[pri] = 0;
		364
		365	return req;
		366	}
		367	}
		368
		369	abort ();
		370	}
		371
		372	static int poll_cb ();
		373	static int req_invoke (aio_req req);
		374	static void req_destroy (aio_req req);
106	static void req_free (aio_req req);	375	static void req_cancel (aio_req req);
107		376
108	/* must be called at most once */	377	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
110	{	379	{
		380	if (!req->self)
		381	{
111	req->self = (SV *)newHV ();	382	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		384	}
113		385
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	387	}
116		388
117	static aio_req SvAIO_REQ (SV *sv)	389	static aio_req SvAIO_REQ (SV *sv)
118	{	390	{
		391	MAGIC *mg;
		392
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	394	croak ("object of class " AIO_REQ_KLASS " expected");
121		395
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		397
124	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	399	}
126		400
127	static void poll_wait ()	401	static void aio_grp_feed (aio_req grp)
128	{	402	{
129	if (nreqs && !ress)	403	block_sig ();
		404
		405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
130	{	406	{
131	fd_set rfd;	407	int old_len = grp->size;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		408
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	409	if (grp->sv2 && SvOK (grp->sv2))
		410	{
		411	dSP;
		412
		413	ENTER;
		414	SAVETMPS;
		415	PUSHMARK (SP);
		416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		417	PUTBACK;
		418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		419	SPAGAIN;
		420	FREETMPS;
		421	LEAVE;
		422	}
		423
		424	/* stop if no progress has been made */
		425	if (old_len == grp->size)
		426	{
		427	SvREFCNT_dec (grp->sv2);
		428	grp->sv2 = 0;
		429	break;
		430	}
136	}	431	}
137	}
138		432
		433	unblock_sig ();
		434	}
		435
		436	static void aio_grp_dec (aio_req grp)
		437	{
		438	--grp->size;
		439
		440	/* call feeder, if applicable */
		441	aio_grp_feed (grp);
		442
		443	/* finish, if done */
		444	if (!grp->size && grp->int1)
		445	{
		446	block_sig ();
		447
		448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
		455	req_destroy (grp);
		456	unblock_sig ();
		457	}
		458	}
		459
139	static void req_invoke (aio_req req)	460	static int req_invoke (aio_req req)
140	{	461	{
141	dSP;	462	dSP;
142	int errorno = errno;
143		463
144	if (req->cancelled || !SvOK (req->callback))	464	if (req->flags & FLAG_SV2_RO_OFF)
145	return;	465	SvREADONLY_off (req->sv2);
146		466
147	errno = req->errorno;	467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	468	{
154	case REQ_READDIR:	469	ENTER;
		470	SAVETMPS;
		471	PUSHMARK (SP);
		472	EXTEND (SP, 1);
		473
		474	switch (req->type)
155	{	475	{
156	SV *rv = &PL_sv_undef;	476	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	477	{
160	char *buf = req->data2ptr;	478	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		479
163	while (req->result)	480	if (req->result >= 0)
164	{	481	{
		482	int i;
		483	char *buf = req->ptr2;
		484	AV *av = newAV ();
		485
		486	av_extend (av, req->result - 1);
		487
		488	for (i = 0; i < req->result; ++i)
		489	{
165	SV *sv = newSVpv (buf, 0);	490	SV *sv = newSVpv (buf, 0);
166		491
167	av_push (av, sv);	492	av_store (av, i, sv);
168	buf += SvCUR (sv) + 1;	493	buf += SvCUR (sv) + 1;
169	req->result--;	494	}
		495
		496	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	497	}
171		498
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	499	PUSHs (rv);
173	}	500	}
		501	break;
174		502
		503	case REQ_OPEN:
		504	{
		505	/* convert fd to fh */
		506	SV *fh;
		507
		508	PUSHs (sv_2mortal (newSViv (req->result)));
		509	PUTBACK;
		510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		511	SPAGAIN;
		512
		513	fh = POPs;
		514	PUSHMARK (SP);
175	XPUSHs (rv);	515	XPUSHs (fh);
		516	}
		517	break;
		518
		519	case REQ_GROUP:
		520	req->int1 = 2; /* mark group as finished */
		521
		522	if (req->sv1)
		523	{
		524	int i;
		525	AV *av = (AV *)req->sv1;
		526
		527	EXTEND (SP, AvFILL (av) + 1);
		528	for (i = 0; i <= AvFILL (av); ++i)
		529	PUSHs (*av_fetch (av, i, 0));
		530	}
		531	break;
		532
		533	case REQ_NOP:
		534	case REQ_BUSY:
		535	break;
		536
		537	case REQ_READLINK:
		538	if (req->result > 0)
		539	{
		540	SvCUR_set (req->sv2, req->result);
		541	*SvEND (req->sv2) = 0;
		542	PUSHs (req->sv2);
		543	}
		544	break;
		545
		546	case REQ_STAT:
		547	case REQ_LSTAT:
		548	case REQ_FSTAT:
		549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		550	PL_laststatval = req->result;
		551	PL_statcache = *(Stat_t *)(req->ptr2);
		552	PUSHs (sv_2mortal (newSViv (req->result)));
		553	break;
		554
		555	case REQ_READ:
		556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		557	*SvEND (req->sv2) = 0;
		558	PUSHs (sv_2mortal (newSViv (req->result)));
		559	break;
		560
		561	default:
		562	PUSHs (sv_2mortal (newSViv (req->result)));
		563	break;
176	}	564	}
177	break;
178		565
179	case REQ_OPEN:	566	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		567
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	568	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	569	call_sv (req->callback, G_VOID | G_EVAL);
187	SPAGAIN;	570	SPAGAIN;
188		571
189	fh = SvREFCNT_inc (POPs);	572	FREETMPS;
190		573	LEAVE;
191	PUSHMARK (SP);
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	574	}
204		575
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}
220
221	static void req_free (aio_req req)
222	{
223	if (req->grp)	576	if (req->grp)
224	{	577	{
225	aio_req grp = req->grp;	578	aio_req grp = req->grp;
226		579
227	/* unlink request */	580	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;	581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;	582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
230		583
231	if (grp->grp_next == grp && grp->fd)	584	if (grp->grp_first == req)
232	{	585	grp->grp_first = req->grp_next;
233	req_invoke (grp);	586
234	req_free (grp);	587	aio_grp_dec (grp);
235	}
236	}	588	}
237		589
		590	return !SvTRUE (ERRSV);
		591	}
		592
		593	static void req_destroy (aio_req req)
		594	{
238	if (req->self)	595	if (req->self)
239	{	596	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
242	}	599	}
243		600
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
258		604
259	if (req->type == REQ_READDIR && req->result >= 0)	605	if (req->flags & FLAG_PTR2_FREE)
260	free (req->data2ptr);	606	free (req->ptr2);
261		607
262	Safefree (req);	608	Safefree (req);
263	}	609	}
264		610
		611	static void req_cancel_subs (aio_req grp)
		612	{
		613	aio_req sub;
		614
		615	if (grp->type != REQ_GROUP)
		616	return;
		617
		618	SvREFCNT_dec (grp->sv2);
		619	grp->sv2 = 0;
		620
		621	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		622	req_cancel (sub);
		623	}
		624
265	static void req_cancel (aio_req req)	625	static void req_cancel (aio_req req)
266	{	626	{
267	req->cancelled = 1;	627	req->flags |= FLAG_CANCELLED;
268		628
269	if (req->type == REQ_GROUP)	629	req_cancel_subs (req);
		630	}
		631
		632	#ifdef USE_SOCKETS_AS_HANDLES
		633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		634	#else
		635	# define TO_SOCKET(x) (x)
		636	#endif
		637
		638	static void
		639	create_pipe (int fd[2])
		640	{
		641	#ifdef _WIN32
		642	int arg = 1;
		643	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, fd)
		644	|| ioctlsocket (TO_SOCKET (fd [0]), FIONBIO, &arg)
		645	|| ioctlsocket (TO_SOCKET (fd [1]), FIONBIO, &arg))
		646	#else
		647	if (pipe (fd)
		648	|| fcntl (fd [0], F_SETFL, O_NONBLOCK)
		649	|| fcntl (fd [1], F_SETFL, O_NONBLOCK))
		650	#endif
		651	croak ("unable to initialize result pipe");
		652
		653	respipe_osf [0] = TO_SOCKET (respipe [0]);
		654	respipe_osf [1] = TO_SOCKET (respipe [1]);
		655	}
		656
		657	X_THREAD_PROC (aio_proc);
		658
		659	static void start_thread (void)
		660	{
		661	worker *wrk = calloc (1, sizeof (worker));
		662
		663	if (!wrk)
		664	croak ("unable to allocate worker thread data");
		665
		666	X_LOCK (wrklock);
		667
		668	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
270	{	669	{
271	aio_req sub;	670	wrk->prev = &wrk_first;
		671	wrk->next = wrk_first.next;
		672	wrk_first.next->prev = wrk;
		673	wrk_first.next = wrk;
		674	++started;
		675	}
		676	else
		677	free (wrk);
272		678
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	679	X_UNLOCK (wrklock);
274	req_cancel (sub);	680	}
		681
		682	static void maybe_start_thread ()
		683	{
		684	if (get_nthreads () >= wanted)
		685	return;
		686
		687	/* todo: maybe use idle here, but might be less exact */
		688	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		689	return;
		690
		691	start_thread ();
		692	}
		693
		694	static void req_send (aio_req req)
		695	{
		696	block_sig ();
		697
		698	++nreqs;
		699
		700	X_LOCK (reqlock);
		701	++nready;
		702	reqq_push (&req_queue, req);
		703	X_COND_SIGNAL (reqwait);
		704	X_UNLOCK (reqlock);
		705
		706	unblock_sig ();
		707
		708	maybe_start_thread ();
		709	}
		710
		711	static void end_thread (void)
		712	{
		713	aio_req req;
		714
		715	Newz (0, req, 1, aio_cb);
		716
		717	req->type = REQ_QUIT;
		718	req->pri = PRI_MAX + PRI_BIAS;
		719
		720	X_LOCK (reqlock);
		721	reqq_push (&req_queue, req);
		722	X_COND_SIGNAL (reqwait);
		723	X_UNLOCK (reqlock);
		724
		725	X_LOCK (wrklock);
		726	--started;
		727	X_UNLOCK (wrklock);
		728	}
		729
		730	static void set_max_idle (int nthreads)
		731	{
		732	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		733	max_idle = nthreads <= 0 ? 1 : nthreads;
		734	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		735	}
		736
		737	static void min_parallel (int nthreads)
		738	{
		739	if (wanted < nthreads)
		740	wanted = nthreads;
		741	}
		742
		743	static void max_parallel (int nthreads)
		744	{
		745	if (wanted > nthreads)
		746	wanted = nthreads;
		747
		748	while (started > wanted)
		749	end_thread ();
		750	}
		751
		752	static void poll_wait ()
		753	{
		754	fd_set rfd;
		755
		756	while (nreqs)
		757	{
		758	int size;
		759	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		760	size = res_queue.size;
		761	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		762
		763	if (size)
		764	return;
		765
		766	maybe_start_thread ();
		767
		768	FD_ZERO (&rfd);
		769	FD_SET (respipe [0], &rfd);
		770
		771	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
275	}	772	}
276	}	773	}
277		774
278	static int poll_cb ()	775	static int poll_cb ()
279	{	776	{
280	dSP;	777	dSP;
281	int count = 0;	778	int count = 0;
		779	int maxreqs = max_poll_reqs;
282	int do_croak = 0;	780	int do_croak = 0;
		781	struct timeval tv_start, tv_now;
283	aio_req req;	782	aio_req req;
		783
		784	if (max_poll_time)
		785	gettimeofday (&tv_start, 0);
		786
		787	block_sig ();
284		788
285	for (;;)	789	for (;;)
286	{	790	{
287	pthread_mutex_lock (&reslock);	791	for (;;)
288	req = ress;
289
290	if (req)
291	{	792	{
292	ress = req->next;	793	maybe_start_thread ();
293		794
		795	X_LOCK (reslock);
		796	req = reqq_shift (&res_queue);
		797
294	if (!ress)	798	if (req)
295	{	799	{
		800	--npending;
		801
		802	if (!res_queue.size)
		803	{
296	/* read any signals sent by the worker threads */	804	/* read any signals sent by the worker threads */
297	char buf [32];	805	char buf [4];
298	while (read (respipe [0], buf, 32) == 32)	806	while (respipe_read (respipe [0], buf, 4) == 4)
		807	;
299	;	808	}
		809	}
300		810
		811	X_UNLOCK (reslock);
		812
		813	if (!req)
		814	break;
		815
		816	--nreqs;
		817
		818	if (req->type == REQ_GROUP && req->size)
		819	{
		820	req->int1 = 1; /* mark request as delayed */
		821	continue;
		822	}
		823	else
		824	{
		825	if (!req_invoke (req))
		826	{
		827	req_destroy (req);
		828	unblock_sig ();
		829	croak (0);
		830	}
		831
		832	count++;
		833	}
		834
		835	req_destroy (req);
		836
		837	if (maxreqs && !--maxreqs)
		838	break;
		839
		840	if (max_poll_time)
		841	{
		842	gettimeofday (&tv_now, 0);
		843
		844	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
301	rese = 0;	845	break;
302	}	846	}
303	}	847	}
304		848
305	pthread_mutex_unlock (&reslock);	849	if (nreqs <= max_outstanding)
306
307	if (!req)
308	break;	850	break;
309		851
310	nreqs--;	852	poll_wait ();
311		853
312	if (req->type == REQ_QUIT)	854	++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	}	855	}
341		856
		857	unblock_sig ();
342	return count;	858	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	}	859	}
446		860
447	/*****************************************************************************/	861	/*****************************************************************************/
448	/* work around various missing functions */	862	/* work around various missing functions */
449		863
…		…
454	/*	868	/*
455	* make our pread/pwrite safe against themselves, but not against	869	* make our pread/pwrite safe against themselves, but not against
456	* normal read/write by using a mutex. slows down execution a lot,	870	* normal read/write by using a mutex. slows down execution a lot,
457	* but that's your problem, not mine.	871	* but that's your problem, not mine.
458	*/	872	*/
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	873	static mutex_t preadwritelock = X_MUTEX_INIT;
460		874
461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	875	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
462	{	876	{
463	ssize_t res;	877	ssize_t res;
464	off_t ooffset;	878	off_t ooffset;
465		879
466	pthread_mutex_lock (&preadwritelock);	880	X_LOCK (preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);	881	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);	882	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);	883	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);	884	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);	885	X_UNLOCK (preadwritelock);
472		886
473	return res;	887	return res;
474	}	888	}
475		889
476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	890	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
477	{	891	{
478	ssize_t res;	892	ssize_t res;
479	off_t ooffset;	893	off_t ooffset;
480		894
481	pthread_mutex_lock (&preadwritelock);	895	X_LOCK (preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);	896	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);	897	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);	898	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);	899	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);	900	X_UNLOCK (preadwritelock);
487		901
488	return res;	902	return res;
489	}	903	}
		904	#endif
		905
		906	#ifndef HAVE_FUTIMES
		907
		908	# define utimes(path,times) aio_utimes (path, times)
		909	# define futimes(fd,times) aio_futimes (fd, times)
		910
		911	int aio_utimes (const char *filename, const struct timeval times[2])
		912	{
		913	if (times)
		914	{
		915	struct utimbuf buf;
		916
		917	buf.actime = times[0].tv_sec;
		918	buf.modtime = times[1].tv_sec;
		919
		920	return utime (filename, &buf);
		921	}
		922	else
		923	return utime (filename, 0);
		924	}
		925
		926	int aio_futimes (int fd, const struct timeval tv[2])
		927	{
		928	errno = ENOSYS;
		929	return -1;
		930	}
		931
490	#endif	932	#endif
491		933
492	#if !HAVE_FDATASYNC	934	#if !HAVE_FDATASYNC
493	# define fdatasync fsync	935	# define fdatasync fsync
494	#endif	936	#endif
495		937
496	#if !HAVE_READAHEAD	938	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
498		940
499	static ssize_t readahead (int fd, off_t offset, size_t count)	941	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
500	{	942	{
501	char readahead_buf[4096];	943	size_t todo = count;
		944	dBUF;
502		945
503	while (count > 0)	946	while (todo > 0)
504	{	947	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
506		949
507	pread (fd, readahead_buf, len, offset);	950	pread (fd, aio_buf, len, offset);
508	offset += len;	951	offset += len;
509	count -= len;	952	todo -= len;
510	}	953	}
511		954
512	errno = 0;	955	errno = 0;
		956	return count;
513	}	957	}
		958
514	#endif	959	#endif
515		960
516	#if !HAVE_READDIR_R	961	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r	962	# define readdir_r aio_readdir_r
518		963
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	964	static mutex_t readdirlock = X_MUTEX_INIT;
520		965
521	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	966	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
522	{	967	{
523	struct dirent *e;	968	X_DIRENT *e;
524	int errorno;	969	int errorno;
525		970
526	pthread_mutex_lock (&readdirlock);	971	X_LOCK (readdirlock);
527		972
528	e = readdir (dirp);	973	e = readdir (dirp);
529	errorno = errno;	974	errorno = errno;
530		975
531	if (e)	976	if (e)
…		…
534	strcpy (ent->d_name, e->d_name);	979	strcpy (ent->d_name, e->d_name);
535	}	980	}
536	else	981	else
537	*res = 0;	982	*res = 0;
538		983
539	pthread_mutex_unlock (&readdirlock);	984	X_UNLOCK (readdirlock);
540		985
541	errno = errorno;	986	errno = errorno;
542	return e ? 0 : -1;	987	return e ? 0 : -1;
543	}	988	}
544	#endif	989	#endif
545		990
546	/* sendfile always needs emulation */	991	/* sendfile always needs emulation */
547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	992	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
548	{	993	{
549	ssize_t res;	994	ssize_t res;
550		995
551	if (!count)	996	if (!count)
552	return 0;	997	return 0;
…		…
563	{	1008	{
564	off_t sbytes;	1009	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566		1011
567	if (res < 0 && sbytes)	1012	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
569	res = sbytes;	1014	res = sbytes;
570	}	1015	}
571		1016
572	# elif __hpux	1017	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
601	#endif	1046	#endif
602	)	1047	)
603	)	1048	)
604	{	1049	{
605	/* emulate sendfile. this is a major pain in the ass */	1050	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	1051	dBUF;
		1052
607	res = 0;	1053	res = 0;
608		1054
609	while (count)	1055	while (count)
610	{	1056	{
611	ssize_t cnt;	1057	ssize_t cnt;
612		1058
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1059	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		1060
615	if (cnt <= 0)	1061	if (cnt <= 0)
616	{	1062	{
617	if (cnt && !res) res = -1;	1063	if (cnt && !res) res = -1;
618	break;	1064	break;
619	}	1065	}
620		1066
621	cnt = write (ofd, buf, cnt);	1067	cnt = write (ofd, aio_buf, cnt);
622		1068
623	if (cnt <= 0)	1069	if (cnt <= 0)
624	{	1070	{
625	if (cnt && !res) res = -1;	1071	if (cnt && !res) res = -1;
626	break;	1072	break;
…		…
634		1080
635	return res;	1081	return res;
636	}	1082	}
637		1083
638	/* read a full directory */	1084	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)	1085	static void scandir_ (aio_req req, worker *self)
640	{	1086	{
641	DIR *dirp = opendir (path);	1087	DIR *dirp;
642	union	1088	union
643	{	1089	{
644	struct dirent d;	1090	X_DIRENT d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
646	} u;	1092	} *u;
647	struct dirent *entp;	1093	X_DIRENT *entp;
648	char *name, *names;	1094	char *name, *names;
649	int memlen = 4096;	1095	int memlen = 4096;
650	int memofs = 0;	1096	int memofs = 0;
651	int res = 0;	1097	int res = 0;
652	int errorno;
653		1098
654	if (!dirp)	1099	X_LOCK (wrklock);
655	return -1;	1100	self->dirp = dirp = opendir (req->ptr1);
656		1101	self->dbuf = u = malloc (sizeof (*u));
		1102	req->flags |= FLAG_PTR2_FREE;
657	names = malloc (memlen);	1103	req->ptr2 = names = malloc (memlen);
		1104	X_UNLOCK (wrklock);
		1105
		1106	if (dirp && u && names)
		1107	for (;;)
		1108	{
		1109	errno = 0;
		1110	readdir_r (dirp, &u->d, &entp);
		1111
		1112	if (!entp)
		1113	break;
		1114
		1115	name = entp->d_name;
		1116
		1117	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1118	{
		1119	int len = strlen (name) + 1;
		1120
		1121	res++;
		1122
		1123	while (memofs + len > memlen)
		1124	{
		1125	memlen *= 2;
		1126	X_LOCK (wrklock);
		1127	req->ptr2 = names = realloc (names, memlen);
		1128	X_UNLOCK (wrklock);
		1129
		1130	if (!names)
		1131	break;
		1132	}
		1133
		1134	memcpy (names + memofs, name, len);
		1135	memofs += len;
		1136	}
		1137	}
		1138
		1139	if (errno)
		1140	res = -1;
		1141
		1142	req->result = res;
		1143	}
		1144
		1145	/*****************************************************************************/
		1146
		1147	X_THREAD_PROC (aio_proc)
		1148	{
		1149	{//D
		1150	aio_req req;
		1151	struct timespec ts;
		1152	worker *self = (worker *)thr_arg;
		1153
		1154	/* try to distribute timeouts somewhat randomly */
		1155	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
658		1156
659	for (;;)	1157	for (;;)
660	{	1158	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);	1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
662		1160
663	if (!entp)	1161	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		1162
712	for (;;)	1163	for (;;)
713	{	1164	{
714	req = reqs;	1165	self->req = req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		1166
722	if (req)	1167	if (req)
723	break;	1168	break;
724		1169
725	pthread_cond_wait (&reqwait, &reqlock);	1170	++idle;
		1171
		1172	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1173	== ETIMEDOUT)
		1174	{
		1175	if (idle > max_idle)
		1176	{
		1177	--idle;
		1178	X_UNLOCK (reqlock);
		1179	X_LOCK (wrklock);
		1180	--started;
		1181	X_UNLOCK (wrklock);
		1182	goto quit;
		1183	}
		1184
		1185	/* we are allowed to idle, so do so without any timeout */
		1186	X_COND_WAIT (reqwait, reqlock);
		1187	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1188	}
		1189
		1190	--idle;
726	}	1191	}
727		1192
728	pthread_mutex_unlock (&reqlock);	1193	--nready;
		1194
		1195	X_UNLOCK (reqlock);
729		1196
730	errno = 0; /* strictly unnecessary */	1197	errno = 0; /* strictly unnecessary */
731		1198
732	if (!req->cancelled)	1199	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	1200	switch (req->type)
734	{	1201	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1202	case REQ_READ: req->result = req->offs >= 0
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1203	? pread (req->int1, req->ptr1, req->size, req->offs)
		1204	: read (req->int1, req->ptr1, req->size); break;
		1205	case REQ_WRITE: req->result = req->offs >= 0
		1206	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1207	: write (req->int1, req->ptr1, req->size); break;
737		1208
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1209	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;	1210	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
740		1211
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1212	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;	1213	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;	1214	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
744		1215
		1216	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1217	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1218	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1219	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1220	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1221	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1222
745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1223	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
746	case REQ_CLOSE: req->result = close (req->fd); break;	1224	case REQ_CLOSE: req->result = close (req->int1); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1226	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1227	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1230	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1231	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1232	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
752		1233
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1236	case REQ_READDIR: scandir_ (req, self); break;
756		1237
757	case REQ_SLEEP:	1238	case REQ_BUSY:
		1239	#ifdef _WIN32
		1240	Sleep (req->nv1 * 1000.);
		1241	#else
758	{	1242	{
759	struct timeval tv;	1243	struct timeval tv;
760		1244
761	tv.tv_sec = req->fd;	1245	tv.tv_sec = req->nv1;
762	tv.tv_usec = req->fd2;	1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
763		1247
764	req->result = select (0, 0, 0, 0, &tv);	1248	req->result = select (0, 0, 0, 0, &tv);
765	}	1249	}
		1250	#endif
		1251	break;
		1252
		1253	case REQ_UTIME:
		1254	case REQ_FUTIME:
		1255	{
		1256	struct timeval tv[2];
		1257	struct timeval *times;
		1258
		1259	if (req->nv1 != -1. || req->nv2 != -1.)
		1260	{
		1261	tv[0].tv_sec = req->nv1;
		1262	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1263	tv[1].tv_sec = req->nv2;
		1264	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1265
		1266	times = tv;
		1267	}
		1268	else
		1269	times = 0;
		1270
		1271
		1272	req->result = req->type == REQ_FUTIME
		1273	? futimes (req->int1, times)
		1274	: utimes (req->ptr1, times);
		1275	}
		1276
		1277	case REQ_GROUP:
		1278	case REQ_NOP:
		1279	break;
766		1280
767	case REQ_QUIT:	1281	case REQ_QUIT:
768	break;	1282	goto quit;
769		1283
770	default:	1284	default:
771	req->result = ENOSYS;	1285	req->result = -1;
772	break;	1286	break;
773	}	1287	}
774		1288
775	req->errorno = errno;	1289	req->errorno = errno;
776		1290
777	pthread_mutex_lock (&reslock);	1291	X_LOCK (reslock);
778		1292
779	req->next = 0;	1293	++npending;
780		1294
781	if (rese)	1295	if (!reqq_push (&res_queue, req))
782	{	1296	{
783	rese->next = req;	1297	/* write a dummy byte to the pipe so fh becomes ready */
784	rese = req;	1298	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1299
		1300	/* optionally signal the main thread asynchronously */
		1301	if (main_sig)
		1302	pthread_kill (main_tid, main_sig);
785	}	1303	}
786	else
787	{
788	rese = ress = req;
789		1304
790	/* write a dummy byte to the pipe so fh becomes ready */	1305	self->req = 0;
791	write (respipe [1], &respipe, 1);	1306	worker_clear (self);
792	}
793		1307
794	pthread_mutex_unlock (&reslock);	1308	X_UNLOCK (reslock);
795	}	1309	}
796	while (type != REQ_QUIT);	1310
		1311	quit:
		1312	X_LOCK (wrklock);
		1313	worker_free (self);
		1314	X_UNLOCK (wrklock);
797		1315
798	return 0;	1316	return 0;
		1317	}//D
799	}	1318	}
800		1319
801	/*****************************************************************************/	1320	/*****************************************************************************/
802		1321
803	static void atfork_prepare (void)	1322	static void atfork_prepare (void)
804	{	1323	{
805	pthread_mutex_lock (&reqlock);	1324	X_LOCK (wrklock);
806	pthread_mutex_lock (&reslock);	1325	X_LOCK (reqlock);
		1326	X_LOCK (reslock);
807	#if !HAVE_PREADWRITE	1327	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);	1328	X_LOCK (preadwritelock);
809	#endif	1329	#endif
810	#if !HAVE_READDIR_R	1330	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);	1331	X_LOCK (readdirlock);
812	#endif	1332	#endif
813	}	1333	}
814		1334
815	static void atfork_parent (void)	1335	static void atfork_parent (void)
816	{	1336	{
817	#if !HAVE_READDIR_R	1337	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);	1338	X_UNLOCK (readdirlock);
819	#endif	1339	#endif
820	#if !HAVE_PREADWRITE	1340	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);	1341	X_UNLOCK (preadwritelock);
822	#endif	1342	#endif
823	pthread_mutex_unlock (&reslock);	1343	X_UNLOCK (reslock);
824	pthread_mutex_unlock (&reqlock);	1344	X_UNLOCK (reqlock);
		1345	X_UNLOCK (wrklock);
825	}	1346	}
826		1347
827	static void atfork_child (void)	1348	static void atfork_child (void)
828	{	1349	{
829	aio_req prv;	1350	aio_req prv;
830		1351
831	started = 0;	1352	while (prv = reqq_shift (&req_queue))
		1353	req_destroy (prv);
832		1354
833	while (reqs)	1355	while (prv = reqq_shift (&res_queue))
		1356	req_destroy (prv);
		1357
		1358	while (wrk_first.next != &wrk_first)
834	{	1359	{
835	prv = reqs;	1360	worker *wrk = wrk_first.next;
836	reqs = prv->next;	1361
		1362	if (wrk->req)
		1363	req_destroy (wrk->req);
		1364
		1365	worker_clear (wrk);
837	req_free (prv);	1366	worker_free (wrk);
838	}	1367	}
839		1368
840	reqs = reqe = 0;	1369	started = 0;
841		1370	idle = 0;
842	while (ress)	1371	nreqs = 0;
843	{	1372	nready = 0;
844	prv = ress;	1373	npending = 0;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850		1374
851	close (respipe [0]);	1375	respipe_close (respipe [0]);
852	close (respipe [1]);	1376	respipe_close (respipe [1]);
		1377
853	create_pipe ();	1378	create_pipe (respipe);
854		1379
855	atfork_parent ();	1380	atfork_parent ();
856	}	1381	}
857		1382
858	#define dREQ \	1383	#define dREQ \
859	aio_req req; \	1384	aio_req req; \
		1385	int req_pri = next_pri; \
		1386	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	1387	\
861	if (SvOK (callback) && !SvROK (callback)) \	1388	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	1389	croak ("callback must be undef or of reference type"); \
863	\	1390	\
864	Newz (0, req, 1, aio_cb); \	1391	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1392	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1393	croak ("out of memory during aio_req allocation"); \
867	\	1394	\
868	req->callback = newSVsv (callback)	1395	req->callback = newSVsv (callback); \
		1396	req->pri = req_pri
869		1397
870	#define REQ_SEND \	1398	#define REQ_SEND \
871	req_send (req); \	1399	req_send (req); \
872	\	1400	\
873	if (GIMME_V != G_VOID) \	1401	if (GIMME_V != G_VOID) \
…		…
878	PROTOTYPES: ENABLE	1406	PROTOTYPES: ENABLE
879		1407
880	BOOT:	1408	BOOT:
881	{	1409	{
882	HV *stash = gv_stashpv ("IO::AIO", 1);	1410	HV *stash = gv_stashpv ("IO::AIO", 1);
		1411
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1414	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1415	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1416	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1417	#ifdef _WIN32
		1418	X_MUTEX_CHECK (wrklock);
		1419	X_MUTEX_CHECK (reslock);
		1420	X_MUTEX_CHECK (reqlock);
		1421	X_MUTEX_CHECK (reqwait);
		1422	X_MUTEX_CHECK (preadwritelock);
		1423	X_MUTEX_CHECK (readdirlock);
886		1424
887	create_pipe ();	1425	X_COND_CHECK (reqwait);
		1426	#else
		1427	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1428	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1429	#endif
		1430
		1431	create_pipe (respipe);
		1432
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
889	}	1434	}
890		1435
891	void	1436	void
892	min_parallel (nthreads)	1437	max_poll_reqs (int nreqs)
893	int nthreads
894	PROTOTYPE: $	1438	PROTOTYPE: $
		1439	CODE:
		1440	max_poll_reqs = nreqs;
895		1441
896	void	1442	void
897	max_parallel (nthreads)	1443	max_poll_time (double nseconds)
898	int nthreads
899	PROTOTYPE: $	1444	PROTOTYPE: $
		1445	CODE:
		1446	max_poll_time = nseconds * AIO_TICKS;
		1447
		1448	void
		1449	min_parallel (int nthreads)
		1450	PROTOTYPE: $
		1451
		1452	void
		1453	max_parallel (int nthreads)
		1454	PROTOTYPE: $
		1455
		1456	void
		1457	max_idle (int nthreads)
		1458	PROTOTYPE: $
		1459	CODE:
		1460	set_max_idle (nthreads);
900		1461
901	int	1462	int
902	max_outstanding (nreqs)	1463	max_outstanding (int maxreqs)
903	int nreqs	1464	PROTOTYPE: $
904	PROTOTYPE: $
905	CODE:	1465	CODE:
906	RETVAL = max_outstanding;	1466	RETVAL = max_outstanding;
907	max_outstanding = nreqs;	1467	max_outstanding = maxreqs;
		1468	OUTPUT:
		1469	RETVAL
908		1470
909	void	1471	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1472	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: $$$;$	1473	PROTOTYPE: $$$;$
916	PPCODE:	1474	PPCODE:
917	{	1475	{
918	dREQ;	1476	dREQ;
919		1477
920	req->type = REQ_OPEN;	1478	req->type = REQ_OPEN;
921	req->data = newSVsv (pathname);	1479	req->sv1 = newSVsv (pathname);
922	req->dataptr = SvPVbyte_nolen (req->data);	1480	req->ptr1 = SvPVbyte_nolen (req->sv1);
923	req->fd = flags;	1481	req->int1 = flags;
924	req->mode = mode;	1482	req->mode = mode;
925		1483
926	REQ_SEND;	1484	REQ_SEND;
927	}	1485	}
928		1486
929	void	1487	void
930	aio_close (fh,callback=&PL_sv_undef)	1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$	1489	PROTOTYPE: $;$
934	ALIAS:	1490	ALIAS:
935	aio_close = REQ_CLOSE	1491	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC	1492	aio_fsync = REQ_FSYNC
937	aio_fdatasync = REQ_FDATASYNC	1493	aio_fdatasync = REQ_FDATASYNC
938	PPCODE:	1494	PPCODE:
939	{	1495	{
940	dREQ;	1496	dREQ;
941		1497
942	req->type = ix;	1498	req->type = ix;
943	req->fh = newSVsv (fh);	1499	req->sv1 = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1500	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
945		1501
946	REQ_SEND (req);	1502	REQ_SEND (req);
947	}	1503	}
948		1504
949	void	1505	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1506	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:	1507	ALIAS:
958	aio_read = REQ_READ	1508	aio_read = REQ_READ
959	aio_write = REQ_WRITE	1509	aio_write = REQ_WRITE
960	PROTOTYPE: $$$$$;$	1510	PROTOTYPE: $$$$$;$
961	PPCODE:	1511	PPCODE:
962	{	1512	{
963	aio_req req;
964	STRLEN svlen;	1513	STRLEN svlen;
965	char *svptr = SvPVbyte (data, svlen);	1514	char *svptr = SvPVbyte (data, svlen);
		1515	UV len = SvUV (length);
966		1516
967	SvUPGRADE (data, SVt_PV);	1517	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);	1518	SvPOK_on (data);
969		1519
970	if (dataoffset < 0)	1520	if (dataoffset < 0)
971	dataoffset += svlen;	1521	dataoffset += svlen;
972		1522
973	if (dataoffset < 0 || dataoffset > svlen)	1523	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	1524	croak ("dataoffset outside of data scalar");
975		1525
976	if (ix == REQ_WRITE)	1526	if (ix == REQ_WRITE)
977	{	1527	{
978	/* write: check length and adjust. */	1528	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	1529	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	1530	len = svlen - dataoffset;
981	}	1531	}
982	else	1532	else
983	{	1533	{
984	/* read: grow scalar as necessary */	1534	/* read: grow scalar as necessary */
985	svptr = SvGROW (data, length + dataoffset);	1535	svptr = SvGROW (data, len + dataoffset + 1);
986	}	1536	}
987		1537
988	if (length < 0)	1538	if (len < 0)
989	croak ("length must not be negative");	1539	croak ("length must not be negative");
990		1540
991	{	1541	{
992	dREQ;	1542	dREQ;
993		1543
994	req->type = ix;	1544	req->type = ix;
995	req->fh = newSVsv (fh);	1545	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
997	: IoOFP (sv_2io (fh)));	1547	: IoOFP (sv_2io (fh)));
		1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	1549	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	1550	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	1551	req->ptr1 = (char *)svptr + dataoffset;
		1552	req->stroffset = dataoffset;
1002		1553
1003	if (!SvREADONLY (data))	1554	if (!SvREADONLY (data))
1004	{	1555	{
1005	SvREADONLY_on (data);	1556	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	1557	req->flags |= FLAG_SV2_RO_OFF;
1007	}	1558	}
1008		1559
1009	REQ_SEND;	1560	REQ_SEND;
1010	}	1561	}
1011	}	1562	}
1012		1563
1013	void	1564	void
		1565	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1566	PROTOTYPE: $$;$
		1567	PPCODE:
		1568	{
		1569	SV *data;
		1570	dREQ;
		1571
		1572	data = newSV (NAME_MAX);
		1573	SvPOK_on (data);
		1574
		1575	req->type = REQ_READLINK;
		1576	req->sv1 = newSVsv (path);
		1577	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1578	req->sv2 = data;
		1579	req->ptr1 = SvPVbyte_nolen (data);
		1580
		1581	REQ_SEND;
		1582	}
		1583
		1584	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1585	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: $$$$;$	1586	PROTOTYPE: $$$$;$
1021	PPCODE:	1587	PPCODE:
1022	{	1588	{
1023	dREQ;	1589	dREQ;
1024		1590
1025	req->type = REQ_SENDFILE;	1591	req->type = REQ_SENDFILE;
1026	req->fh = newSVsv (out_fh);	1592	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1028	req->fh2 = newSVsv (in_fh);	1594	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1030	req->offset = in_offset;	1596	req->offs = SvVAL64 (in_offset);
1031	req->length = length;	1597	req->size = length;
1032		1598
1033	REQ_SEND;	1599	REQ_SEND;
1034	}	1600	}
1035		1601
1036	void	1602	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1603	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$	1604	PROTOTYPE: $$$;$
1043	PPCODE:	1605	PPCODE:
1044	{	1606	{
1045	dREQ;	1607	dREQ;
1046		1608
1047	req->type = REQ_READAHEAD;	1609	req->type = REQ_READAHEAD;
1048	req->fh = newSVsv (fh);	1610	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1050	req->offset = offset;	1612	req->offs = SvVAL64 (offset);
1051	req->length = length;	1613	req->size = length;
1052		1614
1053	REQ_SEND;	1615	REQ_SEND;
1054	}	1616	}
1055		1617
1056	void	1618	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	1620	ALIAS:
1061	aio_stat = REQ_STAT	1621	aio_stat = REQ_STAT
1062	aio_lstat = REQ_LSTAT	1622	aio_lstat = REQ_LSTAT
1063	PPCODE:	1623	PPCODE:
1064	{	1624	{
1065	dREQ;	1625	dREQ;
1066		1626
1067	New (0, req->statdata, 1, Stat_t);	1627	req->ptr2 = malloc (sizeof (Stat_t));
1068	if (!req->statdata)	1628	if (!req->ptr2)
1069	{	1629	{
1070	req_free (req);	1630	req_destroy (req);
1071	croak ("out of memory during aio_req->statdata allocation");	1631	croak ("out of memory during aio_stat statdata allocation");
1072	}	1632	}
		1633
		1634	req->flags |= FLAG_PTR2_FREE;
		1635	req->sv1 = newSVsv (fh_or_path);
1073		1636
1074	if (SvPOK (fh_or_path))	1637	if (SvPOK (fh_or_path))
1075	{	1638	{
1076	req->type = ix;	1639	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);	1640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1079	}	1641	}
1080	else	1642	else
1081	{	1643	{
1082	req->type = REQ_FSTAT;	1644	req->type = REQ_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}	1646	}
1086		1647
1087	REQ_SEND;	1648	REQ_SEND;
1088	}	1649	}
1089		1650
1090	void	1651	void
		1652	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1653	PPCODE:
		1654	{
		1655	dREQ;
		1656
		1657	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1658	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1659	req->sv1 = newSVsv (fh_or_path);
		1660
		1661	if (SvPOK (fh_or_path))
		1662	{
		1663	req->type = REQ_UTIME;
		1664	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1665	}
		1666	else
		1667	{
		1668	req->type = REQ_FUTIME;
		1669	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1670	}
		1671
		1672	REQ_SEND;
		1673	}
		1674
		1675	void
		1676	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1677	PPCODE:
		1678	{
		1679	dREQ;
		1680
		1681	req->sv1 = newSVsv (fh_or_path);
		1682	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1683
		1684	if (SvPOK (fh_or_path))
		1685	{
		1686	req->type = REQ_TRUNCATE;
		1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1688	}
		1689	else
		1690	{
		1691	req->type = REQ_FTRUNCATE;
		1692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1693	}
		1694
		1695	REQ_SEND;
		1696	}
		1697
		1698	void
		1699	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1700	PPCODE:
		1701	{
		1702	dREQ;
		1703
		1704	req->mode = mode;
		1705	req->sv1 = newSVsv (fh_or_path);
		1706
		1707	if (SvPOK (fh_or_path))
		1708	{
		1709	req->type = REQ_CHMOD;
		1710	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1711	}
		1712	else
		1713	{
		1714	req->type = REQ_FCHMOD;
		1715	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1716	}
		1717
		1718	REQ_SEND;
		1719	}
		1720
		1721	void
		1722	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1723	PPCODE:
		1724	{
		1725	dREQ;
		1726
		1727	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1728	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1729	req->sv1 = newSVsv (fh_or_path);
		1730
		1731	if (SvPOK (fh_or_path))
		1732	{
		1733	req->type = REQ_CHOWN;
		1734	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1735	}
		1736	else
		1737	{
		1738	req->type = REQ_FCHOWN;
		1739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1740	}
		1741
		1742	REQ_SEND;
		1743	}
		1744
		1745	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	1747	ALIAS:
1095	aio_unlink = REQ_UNLINK	1748	aio_unlink = REQ_UNLINK
1096	aio_rmdir = REQ_RMDIR	1749	aio_rmdir = REQ_RMDIR
1097	aio_readdir = REQ_READDIR	1750	aio_readdir = REQ_READDIR
1098	PPCODE:	1751	PPCODE:
1099	{	1752	{
1100	dREQ;	1753	dREQ;
1101		1754
1102	req->type = ix;	1755	req->type = ix;
1103	req->data = newSVsv (pathname);	1756	req->sv1 = newSVsv (pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	1757	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1758
		1759	REQ_SEND;
		1760	}
		1761
		1762	void
		1763	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1764	PPCODE:
		1765	{
		1766	dREQ;
1105		1767
		1768	req->type = REQ_MKDIR;
		1769	req->sv1 = newSVsv (pathname);
		1770	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1771	req->mode = mode;
		1772
1106	REQ_SEND;	1773	REQ_SEND;
1107	}	1774	}
1108		1775
1109	void	1776	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:	1778	ALIAS:
1115	aio_link = REQ_LINK	1779	aio_link = REQ_LINK
1116	aio_symlink = REQ_SYMLINK	1780	aio_symlink = REQ_SYMLINK
1117	aio_rename = REQ_RENAME	1781	aio_rename = REQ_RENAME
1118	PPCODE:	1782	PPCODE:
1119	{	1783	{
1120	dREQ;	1784	dREQ;
1121		1785
1122	req->type = ix;	1786	req->type = ix;
1123	req->fh = newSVsv (oldpath);	1787	req->sv2 = newSVsv (oldpath);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	1788	req->ptr2 = SvPVbyte_nolen (req->sv2);
1125	req->data = newSVsv (newpath);	1789	req->sv1 = newSVsv (newpath);
1126	req->dataptr = SvPVbyte_nolen (req->data);	1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1127		1791
1128	REQ_SEND;	1792	REQ_SEND;
1129	}	1793	}
1130		1794
1131	void	1795	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1797	PPCODE:
1136	{	1798	{
1137	dREQ;	1799	dREQ;
1138		1800
1139	req->type = REQ_SLEEP;	1801	req->type = REQ_MKNOD;
1140	req->fd = delay < 0. ? 0 : delay;	1802	req->sv1 = newSVsv (pathname);
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1803	req->ptr1 = SvPVbyte_nolen (req->sv1);
1142		1804	req->mode = (mode_t)mode;
		1805	req->offs = dev;
		1806
1143	REQ_SEND;	1807	REQ_SEND;
1144	}	1808	}
1145		1809
1146	void	1810	void
		1811	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1812	PPCODE:
		1813	{
		1814	dREQ;
		1815
		1816	req->type = REQ_BUSY;
		1817	req->nv1 = delay < 0. ? 0. : delay;
		1818
		1819	REQ_SEND;
		1820	}
		1821
		1822	void
1147	aio_group (callback=&PL_sv_undef)	1823	aio_group (SV *callback=&PL_sv_undef)
1148	SV * callback
1149	PROTOTYPE: ;$	1824	PROTOTYPE: ;$
1150	PPCODE:	1825	PPCODE:
1151	{	1826	{
1152	dREQ;	1827	dREQ;
		1828
1153	req->type = REQ_GROUP;	1829	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1830
1157	req_send (req);	1831	req_send (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	1833	}
		1834
		1835	void
		1836	aio_nop (SV *callback=&PL_sv_undef)
		1837	PPCODE:
		1838	{
		1839	dREQ;
		1840
		1841	req->type = REQ_NOP;
		1842
		1843	REQ_SEND;
		1844	}
		1845
		1846	int
		1847	aioreq_pri (int pri = 0)
		1848	PROTOTYPE: ;$
		1849	CODE:
		1850	RETVAL = next_pri - PRI_BIAS;
		1851	if (items > 0)
		1852	{
		1853	if (pri < PRI_MIN) pri = PRI_MIN;
		1854	if (pri > PRI_MAX) pri = PRI_MAX;
		1855	next_pri = pri + PRI_BIAS;
		1856	}
		1857	OUTPUT:
		1858	RETVAL
		1859
		1860	void
		1861	aioreq_nice (int nice = 0)
		1862	CODE:
		1863	nice = next_pri - nice;
		1864	if (nice < PRI_MIN) nice = PRI_MIN;
		1865	if (nice > PRI_MAX) nice = PRI_MAX;
		1866	next_pri = nice + PRI_BIAS;
1160		1867
1161	void	1868	void
1162	flush ()	1869	flush ()
1163	PROTOTYPE:	1870	PROTOTYPE:
1164	CODE:	1871	CODE:
…		…
1166	{	1873	{
1167	poll_wait ();	1874	poll_wait ();
1168	poll_cb ();	1875	poll_cb ();
1169	}	1876	}
1170		1877
1171	void	1878	int
1172	poll()	1879	poll()
1173	PROTOTYPE:	1880	PROTOTYPE:
1174	CODE:	1881	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();	1882	poll_wait ();
1178	poll_cb ();	1883	RETVAL = poll_cb ();
1179	}	1884	OUTPUT:
		1885	RETVAL
1180		1886
1181	int	1887	int
1182	poll_fileno()	1888	poll_fileno()
1183	PROTOTYPE:	1889	PROTOTYPE:
1184	CODE:	1890	CODE:
…		…
1196		1902
1197	void	1903	void
1198	poll_wait()	1904	poll_wait()
1199	PROTOTYPE:	1905	PROTOTYPE:
1200	CODE:	1906	CODE:
1201	if (nreqs)
1202	poll_wait ();	1907	poll_wait ();
		1908
		1909	void
		1910	setsig (int signum = SIGIO)
		1911	PROTOTYPE: ;$
		1912	CODE:
		1913	{
		1914	if (block_sig_level)
		1915	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1916
		1917	X_LOCK (reslock);
		1918	main_tid = pthread_self ();
		1919	main_sig = signum;
		1920	X_UNLOCK (reslock);
		1921
		1922	if (main_sig && npending)
		1923	pthread_kill (main_tid, main_sig);
		1924	}
		1925
		1926	void
		1927	aio_block (SV *cb)
		1928	PROTOTYPE: &
		1929	PPCODE:
		1930	{
		1931	int count;
		1932
		1933	block_sig ();
		1934	PUSHMARK (SP);
		1935	PUTBACK;
		1936	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1937	SPAGAIN;
		1938	unblock_sig ();
		1939
		1940	if (SvTRUE (ERRSV))
		1941	croak (0);
		1942
		1943	XSRETURN (count);
		1944	}
1203		1945
1204	int	1946	int
1205	nreqs()	1947	nreqs()
1206	PROTOTYPE:	1948	PROTOTYPE:
1207	CODE:	1949	CODE:
1208	RETVAL = nreqs;	1950	RETVAL = nreqs;
1209	OUTPUT:	1951	OUTPUT:
1210	RETVAL	1952	RETVAL
1211		1953
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1954	int
1213		1955	nready()
1214	void
1215	cancel (aio_req_ornot req)
1216	PROTOTYPE:	1956	PROTOTYPE:
1217	CODE:	1957	CODE:
		1958	RETVAL = get_nready ();
		1959	OUTPUT:
		1960	RETVAL
		1961
		1962	int
		1963	npending()
		1964	PROTOTYPE:
		1965	CODE:
		1966	RETVAL = get_npending ();
		1967	OUTPUT:
		1968	RETVAL
		1969
		1970	int
		1971	nthreads()
		1972	PROTOTYPE:
		1973	CODE:
		1974	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1975	RETVAL = started;
		1976	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1977	OUTPUT:
		1978	RETVAL
		1979
		1980	PROTOTYPES: DISABLE
		1981
		1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1983
		1984	void
		1985	cancel (aio_req_ornot req)
		1986	CODE:
1218	req_cancel (req);	1987	req_cancel (req);
1219		1988
		1989	void
		1990	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1991	CODE:
		1992	SvREFCNT_dec (req->callback);
		1993	req->callback = newSVsv (callback);
		1994
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1995	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1996
1222	void	1997	void
1223	add (aio_req grp, ...)	1998	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1999	PPCODE:
1226	{	2000	{
1227	int i;	2001	int i;
		2002	aio_req req;
		2003
		2004	if (main_sig && !block_sig_level)
		2005	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2006
		2007	if (grp->int1 == 2)
		2008	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		2009
1229	for (i = 1; i < items; ++i )	2010	for (i = 1; i < items; ++i )
1230	{	2011	{
1231	if (GIMME_V != G_VOID)	2012	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2013	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		2014
1234	aio_req req = SvAIO_REQ (ST (i));	2015	req = SvAIO_REQ (ST (i));
1235	printf ("req = %p\n", req);//D
1236		2016
1237	if (req)	2017	if (req)
1238	{	2018	{
1239	req->grp_prev = grp;	2019	++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;	2020	req->grp = grp;
		2021
		2022	req->grp_prev = 0;
		2023	req->grp_next = grp->grp_first;
		2024
		2025	if (grp->grp_first)
		2026	grp->grp_first->grp_prev = req;
		2027
		2028	grp->grp_first = req;
1245	}	2029	}
1246	}	2030	}
1247	}	2031	}
1248		2032
		2033	void
		2034	cancel_subs (aio_req_ornot req)
		2035	CODE:
		2036	req_cancel_subs (req);
		2037
		2038	void
		2039	result (aio_req grp, ...)
		2040	CODE:
		2041	{
		2042	int i;
		2043	AV *av;
		2044
		2045	grp->errorno = errno;
		2046
		2047	av = newAV ();
		2048
		2049	for (i = 1; i < items; ++i )
		2050	av_push (av, newSVsv (ST (i)));
		2051
		2052	SvREFCNT_dec (grp->sv1);
		2053	grp->sv1 = (SV *)av;
		2054	}
		2055
		2056	void
		2057	errno (aio_req grp, int errorno = errno)
		2058	CODE:
		2059	grp->errorno = errorno;
		2060
		2061	void
		2062	limit (aio_req grp, int limit)
		2063	CODE:
		2064	grp->int2 = limit;
		2065	aio_grp_feed (grp);
		2066
		2067	void
		2068	feed (aio_req grp, SV *callback=&PL_sv_undef)
		2069	CODE:
		2070	{
		2071	SvREFCNT_dec (grp->sv2);
		2072	grp->sv2 = newSVsv (callback);
		2073
		2074	if (grp->int2 <= 0)
		2075	grp->int2 = 2;
		2076
		2077	aio_grp_feed (grp);
		2078	}
		2079

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