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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.107 by root, Wed Oct 3 21:27:51 2007 UTC

1	#if __linux	1	#include "xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#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
28		68
29	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
30	# if __linux	70	# if __linux
31	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
32	# elif __freebsd	72	# elif __freebsd
…		…
39	# else	79	# else
40	# error sendfile support requested but not available	80	# error sendfile support requested but not available
41	# endif	81	# endif
42	#endif	82	#endif
43		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
44	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	88	#ifndef NAME_MAX
46	# define NAME_MAX 4096	89	# define NAME_MAX 4096
47	#endif	90	#endif
48		91
49	#if __ia64	92	/* buffer size for various temporary buffers */
50	# 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
51	#else	98	#else
52	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
53	#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 */
54		113
55	enum {	114	enum {
56	REQ_QUIT,	115	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
59	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
60	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,
61	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
63	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
65	REQ_GROUP, REQ_NOP,	128	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,	129	REQ_BUSY,
67	};	130	};
68		131
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	132	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	133	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		134
72	typedef struct aio_cb	135	typedef struct aio_cb
73	{	136	{
74	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
75		138
76	SV *data, *callback;	139	SV *callback;
77	SV *fh, *fh2;	140	SV *sv1, *sv2;
78	void *dataptr, *data2ptr;	141	void *ptr1, *ptr2;
79	Stat_t *statdata;
80	off_t offset;	142	off_t offs;
81	size_t length;	143	size_t size;
82	ssize_t result;	144	ssize_t result;
		145	double nv1, nv2;
83		146
84	STRLEN dataoffset;	147	STRLEN stroffset;
85	int type;	148	int type;
86	int fd, fd2;	149	int int1, int2, int3;
87	int errorno;	150	int errorno;
88	mode_t mode; /* open */	151	mode_t mode; /* open */
89		152
90	unsigned char flags;	153	unsigned char flags;
91	unsigned char pri;	154	unsigned char pri;
…		…
93	SV *self; /* the perl counterpart of this request, if any */	156	SV *self; /* the perl counterpart of this request, if any */
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
95	} aio_cb;	158	} aio_cb;
96		159
97	enum {	160	enum {
98	FLAG_CANCELLED = 0x01,	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) */
99	};	164	};
100		165
101	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
102	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
103		168
…		…
105	PRI_MIN = -4,	170	PRI_MIN = -4,
106	PRI_MAX = 4,	171	PRI_MAX = 4,
107		172
108	DEFAULT_PRI = 0,	173	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,	174	PRI_BIAS = -PRI_MIN,
		175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
110	};	176	};
111		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 ()
		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 ()
		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
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;	224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113		225
114	static int started, wanted;	226	static unsigned int started, idle, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;
117	static int respipe [2];
118		227
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	228	/* worker threads management */
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	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
		273	static mutex_t reslock = X_MUTEX_INIT;
		274	static mutex_t reqlock = X_MUTEX_INIT;
		275	static cond_t reqwait = X_COND_INIT;
		276
		277	#if WORDACCESS_UNSAFE
		278
		279	static unsigned int get_nready ()
		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 ()
		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 ()
		302	{
		303	unsigned int retval;
		304
		305	X_LOCK (wrklock);
		306	retval = started;
		307	X_UNLOCK (wrklock);
		308
		309	return retval;
		310	}
		311
121	#else	312	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	313
		314	# define get_nready() nready
		315	# define get_npending() npending
		316	# define get_nthreads() started
		317
123	#endif	318	#endif
124		319
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	320	/*
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	321	* a somewhat faster data structure might be nice, but
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	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;
128		329
129	static volatile aio_req reqs, reqe; /* queue start, queue end */	330	static reqq req_queue;
130	static volatile aio_req ress, rese; /* queue start, queue end */	331	static reqq res_queue;
131		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 ();
132	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
		376	static void req_destroy (aio_req req);
133	static void req_free (aio_req req);	377	static void req_cancel (aio_req req);
134		378
135	/* must be called at most once */	379	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
137	{	381	{
138	if (!req->self)	382	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	401	}
158		402
159	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
160	{	404	{
		405	block_sig ();
		406
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
162	{	408	{
163	int old_len = grp->length;	409	int old_len = grp->size;
164		410
165	if (grp->fh2 && SvOK (grp->fh2))	411	if (grp->sv2 && SvOK (grp->sv2))
166	{	412	{
167	dSP;	413	dSP;
168		414
169	ENTER;	415	ENTER;
170	SAVETMPS;	416	SAVETMPS;
171	PUSHMARK (SP);	417	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;	419	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);	420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
175	SPAGAIN;	421	SPAGAIN;
176	FREETMPS;	422	FREETMPS;
177	LEAVE;	423	LEAVE;
178	}	424	}
179		425
180	/* stop if no progress has been made */	426	/* stop if no progress has been made */
181	if (old_len == grp->length)	427	if (old_len == grp->size)
182	{	428	{
183	SvREFCNT_dec (grp->fh2);	429	SvREFCNT_dec (grp->sv2);
184	grp->fh2 = 0;	430	grp->sv2 = 0;
185	break;	431	break;
186	}	432	}
187	}	433	}
		434
		435	unblock_sig ();
188	}	436	}
189		437
190	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
191	{	439	{
192	--grp->length;	440	--grp->size;
193		441
194	/* call feeder, if applicable */	442	/* call feeder, if applicable */
195	aio_grp_feed (grp);	443	aio_grp_feed (grp);
196		444
197	/* finish, if done */	445	/* finish, if done */
198	if (!grp->length && grp->fd)	446	if (!grp->size && grp->int1)
199	{	447	{
		448	block_sig ();
		449
200	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
201	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
202	}	459	}
203	}	460	}
204		461
205	static void poll_wait ()	462	static int req_invoke (aio_req req)
206	{	463	{
207	fd_set rfd;	464	dSP;
208		465
209	while (nreqs)	466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
		468
		469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
210	{	470	{
211	aio_req req;	471	ENTER;
212	pthread_mutex_lock (&reslock);	472	SAVETMPS;
213	req = ress;	473	PUSHMARK (SP);
214	pthread_mutex_unlock (&reslock);	474	EXTEND (SP, 1);
215		475
216	if (req)	476	switch (req->type)
217	return;	477	{
		478	case REQ_READDIR:
		479	{
		480	SV *rv = &PL_sv_undef;
218		481
219	FD_ZERO(&rfd);	482	if (req->result >= 0)
220	FD_SET(respipe [0], &rfd);	483	{
		484	int i;
		485	char *buf = req->ptr2;
		486	AV *av = newAV ();
221		487
222	select (respipe [0] + 1, &rfd, 0, 0, 0);	488	av_extend (av, req->result - 1);
		489
		490	for (i = 0; i < req->result; ++i)
		491	{
		492	SV *sv = newSVpv (buf, 0);
		493
		494	av_store (av, i, sv);
		495	buf += SvCUR (sv) + 1;
		496	}
		497
		498	rv = sv_2mortal (newRV_noinc ((SV *)av));
		499	}
		500
		501	PUSHs (rv);
		502	}
		503	break;
		504
		505	case REQ_OPEN:
		506	{
		507	/* convert fd to fh */
		508	SV *fh = &PL_sv_undef;
		509
		510	if (req->result >= 0)
		511	{
		512	GV *gv = (GV *)sv_newmortal ();
		513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		514	char sym [64];
		515	int symlen;
		516
		517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		518	gv_init (gv, stash, sym, symlen, 0);
		519
		520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	req->result
		526	);
		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = gv;
		530	}
		531
		532	XPUSHs (fh);
		533	}
		534	break;
		535
		536	case REQ_GROUP:
		537	req->int1 = 2; /* mark group as finished */
		538
		539	if (req->sv1)
		540	{
		541	int i;
		542	AV *av = (AV *)req->sv1;
		543
		544	EXTEND (SP, AvFILL (av) + 1);
		545	for (i = 0; i <= AvFILL (av); ++i)
		546	PUSHs (*av_fetch (av, i, 0));
		547	}
		548	break;
		549
		550	case REQ_NOP:
		551	case REQ_BUSY:
		552	break;
		553
		554	case REQ_READLINK:
		555	if (req->result > 0)
		556	{
		557	SvCUR_set (req->sv2, req->result);
		558	*SvEND (req->sv2) = 0;
		559	PUSHs (req->sv2);
		560	}
		561	break;
		562
		563	case REQ_STAT:
		564	case REQ_LSTAT:
		565	case REQ_FSTAT:
		566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		567	PL_laststatval = req->result;
		568	PL_statcache = *(Stat_t *)(req->ptr2);
		569	PUSHs (sv_2mortal (newSViv (req->result)));
		570	break;
		571
		572	case REQ_READ:
		573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		574	*SvEND (req->sv2) = 0;
		575	PUSHs (sv_2mortal (newSViv (req->result)));
		576	break;
		577
		578	default:
		579	PUSHs (sv_2mortal (newSViv (req->result)));
		580	break;
		581	}
		582
		583	errno = req->errorno;
		584
		585	PUTBACK;
		586	call_sv (req->callback, G_VOID | G_EVAL);
		587	SPAGAIN;
		588
		589	FREETMPS;
		590	LEAVE;
223	}	591	}
224	}
225		592
226	static void req_invoke (aio_req req)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{
243	case REQ_READDIR:
244	{
245	SV *rv = &PL_sv_undef;
246
247	if (req->result >= 0)
248	{
249	char *buf = req->data2ptr;
250	AV *av = newAV ();
251
252	while (req->result)
253	{
254	SV *sv = newSVpv (buf, 0);
255
256	av_push (av, sv);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{
320	req_free (req);
321	croak (0);
322	}
323	}
324
325	static void req_free (aio_req req)
326	{
327	if (req->grp)	593	if (req->grp)
328	{	594	{
329	aio_req grp = req->grp;	595	aio_req grp = req->grp;
330		596
331	/* unlink request */	597	/* unlink request */
…		…
336	grp->grp_first = req->grp_next;	602	grp->grp_first = req->grp_next;
337		603
338	aio_grp_dec (grp);	604	aio_grp_dec (grp);
339	}	605	}
340		606
		607	return !SvTRUE (ERRSV);
		608	}
		609
		610	static void req_destroy (aio_req req)
		611	{
341	if (req->self)	612	if (req->self)
342	{	613	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	614	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	615	SvREFCNT_dec (req->self);
345	}	616	}
346		617
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	618	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	619	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	620	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352		621
353	if (req->type == REQ_READDIR && req->result >= 0)	622	if (req->flags & FLAG_PTR2_FREE)
354	free (req->data2ptr);	623	free (req->ptr2);
355		624
356	Safefree (req);	625	Safefree (req);
357	}	626	}
358		627
		628	static void req_cancel_subs (aio_req grp)
		629	{
		630	aio_req sub;
		631
		632	if (grp->type != REQ_GROUP)
		633	return;
		634
		635	SvREFCNT_dec (grp->sv2);
		636	grp->sv2 = 0;
		637
		638	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		639	req_cancel (sub);
		640	}
		641
359	static void req_cancel (aio_req req)	642	static void req_cancel (aio_req req)
360	{	643	{
361	req->flags |= FLAG_CANCELLED;	644	req->flags |= FLAG_CANCELLED;
362		645
363	if (req->type == REQ_GROUP)	646	req_cancel_subs (req);
		647	}
		648
		649	#ifdef USE_SOCKETS_AS_HANDLES
		650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		651	#else
		652	# define TO_SOCKET(x) (x)
		653	#endif
		654
		655	static void
		656	create_respipe ()
		657	{
		658	int old_readfd = respipe [0];
		659
		660	if (respipe [1] >= 0)
		661	respipe_close (TO_SOCKET (respipe [1]));
		662
		663	#ifdef _WIN32
		664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		665	#else
		666	if (pipe (respipe))
		667	#endif
		668	croak ("unable to initialize result pipe");
		669
		670	if (old_readfd >= 0)
364	{	671	{
365	aio_req sub;	672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		673	croak ("unable to initialize result pipe(2)");
366		674
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	675	respipe_close (respipe [0]);
368	req_cancel (sub);	676	respipe [0] = old_readfd;
		677	}
		678
		679	#ifdef _WIN32
		680	int arg = 1;
		681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		683	#else
		684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		686	#endif
		687	croak ("unable to initialize result pipe(3)");
		688
		689	respipe_osf [0] = TO_SOCKET (respipe [0]);
		690	respipe_osf [1] = TO_SOCKET (respipe [1]);
		691	}
		692
		693	X_THREAD_PROC (aio_proc);
		694
		695	static void start_thread (void)
		696	{
		697	worker *wrk = calloc (1, sizeof (worker));
		698
		699	if (!wrk)
		700	croak ("unable to allocate worker thread data");
		701
		702	X_LOCK (wrklock);
		703
		704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		705	{
		706	wrk->prev = &wrk_first;
		707	wrk->next = wrk_first.next;
		708	wrk_first.next->prev = wrk;
		709	wrk_first.next = wrk;
		710	++started;
		711	}
		712	else
		713	free (wrk);
		714
		715	X_UNLOCK (wrklock);
		716	}
		717
		718	static void maybe_start_thread ()
		719	{
		720	if (get_nthreads () >= wanted)
		721	return;
		722
		723	/* todo: maybe use idle here, but might be less exact */
		724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		725	return;
		726
		727	start_thread ();
		728	}
		729
		730	static void req_send (aio_req req)
		731	{
		732	block_sig ();
		733
		734	++nreqs;
		735
		736	X_LOCK (reqlock);
		737	++nready;
		738	reqq_push (&req_queue, req);
		739	X_COND_SIGNAL (reqwait);
		740	X_UNLOCK (reqlock);
		741
		742	unblock_sig ();
		743
		744	maybe_start_thread ();
		745	}
		746
		747	static void end_thread (void)
		748	{
		749	aio_req req;
		750
		751	Newz (0, req, 1, aio_cb);
		752
		753	req->type = REQ_QUIT;
		754	req->pri = PRI_MAX + PRI_BIAS;
		755
		756	X_LOCK (reqlock);
		757	reqq_push (&req_queue, req);
		758	X_COND_SIGNAL (reqwait);
		759	X_UNLOCK (reqlock);
		760
		761	X_LOCK (wrklock);
		762	--started;
		763	X_UNLOCK (wrklock);
		764	}
		765
		766	static void set_max_idle (int nthreads)
		767	{
		768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		769	max_idle = nthreads <= 0 ? 1 : nthreads;
		770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		771	}
		772
		773	static void min_parallel (int nthreads)
		774	{
		775	if (wanted < nthreads)
		776	wanted = nthreads;
		777	}
		778
		779	static void max_parallel (int nthreads)
		780	{
		781	if (wanted > nthreads)
		782	wanted = nthreads;
		783
		784	while (started > wanted)
		785	end_thread ();
		786	}
		787
		788	static void poll_wait ()
		789	{
		790	fd_set rfd;
		791
		792	while (nreqs)
		793	{
		794	int size;
		795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		796	size = res_queue.size;
		797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		798
		799	if (size)
		800	return;
		801
		802	maybe_start_thread ();
		803
		804	FD_ZERO (&rfd);
		805	FD_SET (respipe [0], &rfd);
		806
		807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
369	}	808	}
370	}	809	}
371		810
372	static int poll_cb ()	811	static int poll_cb ()
373	{	812	{
374	dSP;	813	dSP;
375	int count = 0;	814	int count = 0;
		815	int maxreqs = max_poll_reqs;
376	int do_croak = 0;	816	int do_croak = 0;
		817	struct timeval tv_start, tv_now;
377	aio_req req;	818	aio_req req;
		819
		820	if (max_poll_time)
		821	gettimeofday (&tv_start, 0);
		822
		823	block_sig ();
378		824
379	for (;;)	825	for (;;)
380	{	826	{
381	pthread_mutex_lock (&reslock);	827	for (;;)
382	req = ress;
383
384	if (req)
385	{	828	{
386	ress = req->next;	829	maybe_start_thread ();
387		830
		831	X_LOCK (reslock);
		832	req = reqq_shift (&res_queue);
		833
388	if (!ress)	834	if (req)
389	{	835	{
		836	--npending;
		837
		838	if (!res_queue.size)
		839	{
390	/* read any signals sent by the worker threads */	840	/* read any signals sent by the worker threads */
391	char buf [32];	841	char buf [4];
392	while (read (respipe [0], buf, 32) == 32)	842	while (respipe_read (respipe [0], buf, 4) == 4)
		843	;
393	;	844	}
		845	}
394		846
		847	X_UNLOCK (reslock);
		848
		849	if (!req)
		850	break;
		851
		852	--nreqs;
		853
		854	if (req->type == REQ_GROUP && req->size)
		855	{
		856	req->int1 = 1; /* mark request as delayed */
		857	continue;
		858	}
		859	else
		860	{
		861	if (!req_invoke (req))
		862	{
		863	req_destroy (req);
		864	unblock_sig ();
		865	croak (0);
		866	}
		867
		868	count++;
		869	}
		870
		871	req_destroy (req);
		872
		873	if (maxreqs && !--maxreqs)
		874	break;
		875
		876	if (max_poll_time)
		877	{
		878	gettimeofday (&tv_now, 0);
		879
		880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
395	rese = 0;	881	break;
396	}	882	}
397	}	883	}
398		884
399	pthread_mutex_unlock (&reslock);	885	if (nreqs <= max_outstanding)
400
401	if (!req)
402	break;	886	break;
403		887
404	--nreqs;	888	poll_wait ();
405		889
406	if (req->type == REQ_QUIT)	890	++maxreqs;
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	891	}
435		892
		893	unblock_sig ();
436	return count;	894	return count;
437	}
438
439	static void *aio_proc(void *arg);
440
441	static void start_thread (void)
442	{
443	sigset_t fullsigset, oldsigset;
444	pthread_t tid;
445	pthread_attr_t attr;
446
447	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}
459
460	static void req_send (aio_req req)
461	{
462	while (started < wanted && nreqs >= started)
463	start_thread ();
464
465	++nreqs;
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{
473	reqe->next = req;
474	reqe = req;
475	}
476	else
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}
493
494	static void end_thread (void)
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499
500	req_send (req);
501	}
502
503	static void min_parallel (int nthreads)
504	{
505	if (wanted < nthreads)
506	wanted = nthreads;
507	}
508
509	static void max_parallel (int nthreads)
510	{
511	int cur = started;
512
513	if (wanted > nthreads)
514	wanted = nthreads;
515
516	while (cur > wanted)
517	{
518	end_thread ();
519	cur--;
520	}
521
522	while (started > wanted)
523	{
524	poll_wait ();
525	poll_cb ();
526	}
527	}
528
529	static void create_pipe ()
530	{
531	if (pipe (respipe))
532	croak ("unable to initialize result pipe");
533
534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
535	croak ("cannot set result pipe to nonblocking mode");
536
537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
538	croak ("cannot set result pipe to nonblocking mode");
539	}	895	}
540		896
541	/*****************************************************************************/	897	/*****************************************************************************/
542	/* work around various missing functions */	898	/* work around various missing functions */
543		899
…		…
548	/*	904	/*
549	* make our pread/pwrite safe against themselves, but not against	905	* make our pread/pwrite safe against themselves, but not against
550	* normal read/write by using a mutex. slows down execution a lot,	906	* normal read/write by using a mutex. slows down execution a lot,
551	* but that's your problem, not mine.	907	* but that's your problem, not mine.
552	*/	908	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	909	static mutex_t preadwritelock = X_MUTEX_INIT;
554		910
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
556	{	912	{
557	ssize_t res;	913	ssize_t res;
558	off_t ooffset;	914	off_t ooffset;
559		915
560	pthread_mutex_lock (&preadwritelock);	916	X_LOCK (preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);	917	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);	918	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);	919	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);	920	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);	921	X_UNLOCK (preadwritelock);
566		922
567	return res;	923	return res;
568	}	924	}
569		925
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
571	{	927	{
572	ssize_t res;	928	ssize_t res;
573	off_t ooffset;	929	off_t ooffset;
574		930
575	pthread_mutex_lock (&preadwritelock);	931	X_LOCK (preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);	932	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);	933	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);	934	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);	936	X_UNLOCK (preadwritelock);
581		937
582	return res;	938	return res;
583	}	939	}
		940	#endif
		941
		942	#ifndef HAVE_FUTIMES
		943
		944	# define utimes(path,times) aio_utimes (path, times)
		945	# define futimes(fd,times) aio_futimes (fd, times)
		946
		947	int aio_utimes (const char *filename, const struct timeval times[2])
		948	{
		949	if (times)
		950	{
		951	struct utimbuf buf;
		952
		953	buf.actime = times[0].tv_sec;
		954	buf.modtime = times[1].tv_sec;
		955
		956	return utime (filename, &buf);
		957	}
		958	else
		959	return utime (filename, 0);
		960	}
		961
		962	int aio_futimes (int fd, const struct timeval tv[2])
		963	{
		964	errno = ENOSYS;
		965	return -1;
		966	}
		967
584	#endif	968	#endif
585		969
586	#if !HAVE_FDATASYNC	970	#if !HAVE_FDATASYNC
587	# define fdatasync fsync	971	# define fdatasync fsync
588	#endif	972	#endif
589		973
590	#if !HAVE_READAHEAD	974	#if !HAVE_READAHEAD
591	# define readahead aio_readahead	975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
592		976
593	static ssize_t readahead (int fd, off_t offset, size_t count)	977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
594	{	978	{
595	char readahead_buf[4096];	979	size_t todo = count;
		980	dBUF;
596		981
597	while (count > 0)	982	while (todo > 0)
598	{	983	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
600		985
601	pread (fd, readahead_buf, len, offset);	986	pread (fd, aio_buf, len, offset);
602	offset += len;	987	offset += len;
603	count -= len;	988	todo -= len;
604	}	989	}
605		990
606	errno = 0;	991	errno = 0;
		992	return count;
607	}	993	}
		994
608	#endif	995	#endif
609		996
610	#if !HAVE_READDIR_R	997	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r	998	# define readdir_r aio_readdir_r
612		999
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1000	static mutex_t readdirlock = X_MUTEX_INIT;
614		1001
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
616	{	1003	{
617	struct dirent *e;	1004	X_DIRENT *e;
618	int errorno;	1005	int errorno;
619		1006
620	pthread_mutex_lock (&readdirlock);	1007	X_LOCK (readdirlock);
621		1008
622	e = readdir (dirp);	1009	e = readdir (dirp);
623	errorno = errno;	1010	errorno = errno;
624		1011
625	if (e)	1012	if (e)
…		…
628	strcpy (ent->d_name, e->d_name);	1015	strcpy (ent->d_name, e->d_name);
629	}	1016	}
630	else	1017	else
631	*res = 0;	1018	*res = 0;
632		1019
633	pthread_mutex_unlock (&readdirlock);	1020	X_UNLOCK (readdirlock);
634		1021
635	errno = errorno;	1022	errno = errorno;
636	return e ? 0 : -1;	1023	return e ? 0 : -1;
637	}	1024	}
638	#endif	1025	#endif
639		1026
640	/* sendfile always needs emulation */	1027	/* sendfile always needs emulation */
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
642	{	1029	{
643	ssize_t res;	1030	ssize_t res;
644		1031
645	if (!count)	1032	if (!count)
646	return 0;	1033	return 0;
…		…
657	{	1044	{
658	off_t sbytes;	1045	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		1047
661	if (res < 0 && sbytes)	1048	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
663	res = sbytes;	1050	res = sbytes;
664	}	1051	}
665		1052
666	# elif __hpux	1053	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
695	#endif	1082	#endif
696	)	1083	)
697	)	1084	)
698	{	1085	{
699	/* emulate sendfile. this is a major pain in the ass */	1086	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];	1087	dBUF;
		1088
701	res = 0;	1089	res = 0;
702		1090
703	while (count)	1091	while (count)
704	{	1092	{
705	ssize_t cnt;	1093	ssize_t cnt;
706		1094
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
708		1096
709	if (cnt <= 0)	1097	if (cnt <= 0)
710	{	1098	{
711	if (cnt && !res) res = -1;	1099	if (cnt && !res) res = -1;
712	break;	1100	break;
713	}	1101	}
714		1102
715	cnt = write (ofd, buf, cnt);	1103	cnt = write (ofd, aio_buf, cnt);
716		1104
717	if (cnt <= 0)	1105	if (cnt <= 0)
718	{	1106	{
719	if (cnt && !res) res = -1;	1107	if (cnt && !res) res = -1;
720	break;	1108	break;
…		…
728		1116
729	return res;	1117	return res;
730	}	1118	}
731		1119
732	/* read a full directory */	1120	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)	1121	static void scandir_ (aio_req req, worker *self)
734	{	1122	{
735	DIR *dirp = opendir (path);	1123	DIR *dirp;
736	union	1124	union
737	{	1125	{
738	struct dirent d;	1126	X_DIRENT d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
740	} u;	1128	} *u;
741	struct dirent *entp;	1129	X_DIRENT *entp;
742	char *name, *names;	1130	char *name, *names;
743	int memlen = 4096;	1131	int memlen = 4096;
744	int memofs = 0;	1132	int memofs = 0;
745	int res = 0;	1133	int res = 0;
746	int errorno;
747		1134
748	if (!dirp)	1135	X_LOCK (wrklock);
749	return -1;	1136	self->dirp = dirp = opendir (req->ptr1);
750		1137	self->dbuf = u = malloc (sizeof (*u));
		1138	req->flags |= FLAG_PTR2_FREE;
751	names = malloc (memlen);	1139	req->ptr2 = names = malloc (memlen);
		1140	X_UNLOCK (wrklock);
		1141
		1142	if (dirp && u && names)
		1143	for (;;)
		1144	{
		1145	errno = 0;
		1146	readdir_r (dirp, &u->d, &entp);
		1147
		1148	if (!entp)
		1149	break;
		1150
		1151	name = entp->d_name;
		1152
		1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1154	{
		1155	int len = strlen (name) + 1;
		1156
		1157	res++;
		1158
		1159	while (memofs + len > memlen)
		1160	{
		1161	memlen *= 2;
		1162	X_LOCK (wrklock);
		1163	req->ptr2 = names = realloc (names, memlen);
		1164	X_UNLOCK (wrklock);
		1165
		1166	if (!names)
		1167	break;
		1168	}
		1169
		1170	memcpy (names + memofs, name, len);
		1171	memofs += len;
		1172	}
		1173	}
		1174
		1175	if (errno)
		1176	res = -1;
		1177
		1178	req->result = res;
		1179	}
		1180
		1181	/*****************************************************************************/
		1182
		1183	X_THREAD_PROC (aio_proc)
		1184	{
		1185	{//D
		1186	aio_req req;
		1187	struct timespec ts;
		1188	worker *self = (worker *)thr_arg;
		1189
		1190	/* try to distribute timeouts somewhat randomly */
		1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
752		1192
753	for (;;)	1193	for (;;)
754	{	1194	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);	1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
756		1196
757	if (!entp)	1197	X_LOCK (reqlock);
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805		1198
806	for (;;)	1199	for (;;)
807	{	1200	{
808	req = reqs;	1201	self->req = req = reqq_shift (&req_queue);
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815		1202
816	if (req)	1203	if (req)
817	break;	1204	break;
818		1205
819	pthread_cond_wait (&reqwait, &reqlock);	1206	++idle;
		1207
		1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1209	== ETIMEDOUT)
		1210	{
		1211	if (idle > max_idle)
		1212	{
		1213	--idle;
		1214	X_UNLOCK (reqlock);
		1215	X_LOCK (wrklock);
		1216	--started;
		1217	X_UNLOCK (wrklock);
		1218	goto quit;
		1219	}
		1220
		1221	/* we are allowed to idle, so do so without any timeout */
		1222	X_COND_WAIT (reqwait, reqlock);
		1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1224	}
		1225
		1226	--idle;
820	}	1227	}
821		1228
822	pthread_mutex_unlock (&reqlock);	1229	--nready;
		1230
		1231	X_UNLOCK (reqlock);
823		1232
824	errno = 0; /* strictly unnecessary */	1233	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826		1234
827	if (!(req->flags & FLAG_CANCELLED))	1235	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)	1236	switch (req->type)
829	{	1237	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1238	case REQ_READ: req->result = req->offs >= 0
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1239	? pread (req->int1, req->ptr1, req->size, req->offs)
		1240	: read (req->int1, req->ptr1, req->size); break;
		1241	case REQ_WRITE: req->result = req->offs >= 0
		1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1243	: write (req->int1, req->ptr1, req->size); break;
832		1244
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
835		1247
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
839		1251
		1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1258
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;	1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
847		1269
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;	1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1272	case REQ_READDIR: scandir_ (req, self); break;
851		1273
852	case REQ_SLEEP:	1274	case REQ_BUSY:
		1275	#ifdef _WIN32
		1276	Sleep (req->nv1 * 1000.);
		1277	#else
853	{	1278	{
854	struct timeval tv;	1279	struct timeval tv;
855		1280
856	tv.tv_sec = req->fd;	1281	tv.tv_sec = req->nv1;
857	tv.tv_usec = req->fd2;	1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
858		1283
859	req->result = select (0, 0, 0, 0, &tv);	1284	req->result = select (0, 0, 0, 0, &tv);
860	}	1285	}
		1286	#endif
		1287	break;
		1288
		1289	case REQ_UTIME:
		1290	case REQ_FUTIME:
		1291	{
		1292	struct timeval tv[2];
		1293	struct timeval *times;
		1294
		1295	if (req->nv1 != -1. || req->nv2 != -1.)
		1296	{
		1297	tv[0].tv_sec = req->nv1;
		1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1299	tv[1].tv_sec = req->nv2;
		1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1301
		1302	times = tv;
		1303	}
		1304	else
		1305	times = 0;
		1306
		1307
		1308	req->result = req->type == REQ_FUTIME
		1309	? futimes (req->int1, times)
		1310	: utimes (req->ptr1, times);
		1311	}
861		1312
862	case REQ_GROUP:	1313	case REQ_GROUP:
863	case REQ_NOP:	1314	case REQ_NOP:
		1315	break;
		1316
864	case REQ_QUIT:	1317	case REQ_QUIT:
865	break;	1318	goto quit;
866		1319
867	default:	1320	default:
868	req->result = ENOSYS;	1321	req->result = -1;
869	break;	1322	break;
870	}	1323	}
871		1324
872	req->errorno = errno;	1325	req->errorno = errno;
873		1326
874	pthread_mutex_lock (&reslock);	1327	X_LOCK (reslock);
875		1328
876	req->next = 0;	1329	++npending;
877		1330
878	if (rese)	1331	if (!reqq_push (&res_queue, req))
879	{	1332	{
880	rese->next = req;	1333	/* write a dummy byte to the pipe so fh becomes ready */
881	rese = req;	1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1335
		1336	/* optionally signal the main thread asynchronously */
		1337	if (main_sig)
		1338	pthread_kill (main_tid, main_sig);
882	}	1339	}
883	else
884	{
885	rese = ress = req;
886		1340
887	/* write a dummy byte to the pipe so fh becomes ready */	1341	self->req = 0;
888	write (respipe [1], &respipe, 1);	1342	worker_clear (self);
889	}
890		1343
891	pthread_mutex_unlock (&reslock);	1344	X_UNLOCK (reslock);
892	}	1345	}
893	while (type != REQ_QUIT);	1346
		1347	quit:
		1348	X_LOCK (wrklock);
		1349	worker_free (self);
		1350	X_UNLOCK (wrklock);
894		1351
895	return 0;	1352	return 0;
		1353	}//D
896	}	1354	}
897		1355
898	/*****************************************************************************/	1356	/*****************************************************************************/
899		1357
900	static void atfork_prepare (void)	1358	static void atfork_prepare (void)
901	{	1359	{
902	pthread_mutex_lock (&reqlock);	1360	X_LOCK (wrklock);
903	pthread_mutex_lock (&reslock);	1361	X_LOCK (reqlock);
		1362	X_LOCK (reslock);
904	#if !HAVE_PREADWRITE	1363	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);	1364	X_LOCK (preadwritelock);
906	#endif	1365	#endif
907	#if !HAVE_READDIR_R	1366	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);	1367	X_LOCK (readdirlock);
909	#endif	1368	#endif
910	}	1369	}
911		1370
912	static void atfork_parent (void)	1371	static void atfork_parent (void)
913	{	1372	{
914	#if !HAVE_READDIR_R	1373	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);	1374	X_UNLOCK (readdirlock);
916	#endif	1375	#endif
917	#if !HAVE_PREADWRITE	1376	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);	1377	X_UNLOCK (preadwritelock);
919	#endif	1378	#endif
920	pthread_mutex_unlock (&reslock);	1379	X_UNLOCK (reslock);
921	pthread_mutex_unlock (&reqlock);	1380	X_UNLOCK (reqlock);
		1381	X_UNLOCK (wrklock);
922	}	1382	}
923		1383
924	static void atfork_child (void)	1384	static void atfork_child (void)
925	{	1385	{
926	aio_req prv;	1386	aio_req prv;
927		1387
928	started = 0;	1388	while (prv = reqq_shift (&req_queue))
		1389	req_destroy (prv);
929		1390
930	while (reqs)	1391	while (prv = reqq_shift (&res_queue))
		1392	req_destroy (prv);
		1393
		1394	while (wrk_first.next != &wrk_first)
931	{	1395	{
932	prv = reqs;	1396	worker *wrk = wrk_first.next;
933	reqs = prv->next;	1397
		1398	if (wrk->req)
		1399	req_destroy (wrk->req);
		1400
		1401	worker_clear (wrk);
934	req_free (prv);	1402	worker_free (wrk);
935	}	1403	}
936		1404
937	reqs = reqe = 0;	1405	started = 0;
938		1406	idle = 0;
939	while (ress)	1407	nreqs = 0;
940	{	1408	nready = 0;
941	prv = ress;	1409	npending = 0;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947		1410
948	close (respipe [0]);
949	close (respipe [1]);
950	create_pipe ();	1411	create_respipe ();
951		1412
952	atfork_parent ();	1413	atfork_parent ();
953	}	1414	}
954		1415
955	#define dREQ \	1416	#define dREQ \
…		…
977		1438
978	PROTOTYPES: ENABLE	1439	PROTOTYPES: ENABLE
979		1440
980	BOOT:	1441	BOOT:
981	{	1442	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	1443	stash = gv_stashpv ("IO::AIO", 1);
		1444
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1450	#ifdef _WIN32
		1451	X_MUTEX_CHECK (wrklock);
		1452	X_MUTEX_CHECK (reslock);
		1453	X_MUTEX_CHECK (reqlock);
		1454	X_MUTEX_CHECK (reqwait);
		1455	X_MUTEX_CHECK (preadwritelock);
		1456	X_MUTEX_CHECK (readdirlock);
986		1457
987	create_pipe ();	1458	X_COND_CHECK (reqwait);
		1459	#else
		1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1462	#endif
		1463
		1464	create_respipe ();
		1465
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
989	}	1467	}
990		1468
991	void	1469	void
992	min_parallel (nthreads)	1470	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	1471	PROTOTYPE: $
		1472	CODE:
		1473	max_poll_reqs = nreqs;
995		1474
996	void	1475	void
997	max_parallel (nthreads)	1476	max_poll_time (double nseconds)
998	int nthreads
999	PROTOTYPE: $	1477	PROTOTYPE: $
		1478	CODE:
		1479	max_poll_time = nseconds * AIO_TICKS;
		1480
		1481	void
		1482	min_parallel (int nthreads)
		1483	PROTOTYPE: $
		1484
		1485	void
		1486	max_parallel (int nthreads)
		1487	PROTOTYPE: $
		1488
		1489	void
		1490	max_idle (int nthreads)
		1491	PROTOTYPE: $
		1492	CODE:
		1493	set_max_idle (nthreads);
1000		1494
1001	int	1495	int
1002	max_outstanding (nreqs)	1496	max_outstanding (int maxreqs)
1003	int nreqs	1497	PROTOTYPE: $
1004	PROTOTYPE: $
1005	CODE:	1498	CODE:
1006	RETVAL = max_outstanding;	1499	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;	1500	max_outstanding = maxreqs;
		1501	OUTPUT:
		1502	RETVAL
1008		1503
1009	void	1504	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1011	SV * pathname
1012	int flags
1013	int mode
1014	SV * callback
1015	PROTOTYPE: $$$;$	1506	PROTOTYPE: $$$;$
1016	PPCODE:	1507	PPCODE:
1017	{	1508	{
1018	dREQ;	1509	dREQ;
1019		1510
1020	req->type = REQ_OPEN;	1511	req->type = REQ_OPEN;
1021	req->data = newSVsv (pathname);	1512	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1513	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	1514	req->int1 = flags;
1024	req->mode = mode;	1515	req->mode = mode;
1025		1516
1026	REQ_SEND;	1517	REQ_SEND;
1027	}	1518	}
1028		1519
1029	void	1520	void
1030	aio_close (fh,callback=&PL_sv_undef)	1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$	1522	PROTOTYPE: $;$
1034	ALIAS:	1523	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC	1524	aio_fsync = REQ_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC	1525	aio_fdatasync = REQ_FDATASYNC
1038	PPCODE:	1526	PPCODE:
1039	{	1527	{
1040	dREQ;	1528	dREQ;
1041		1529
1042	req->type = ix;	1530	req->type = ix;
1043	req->fh = newSVsv (fh);	1531	req->sv1 = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		1533
1046	REQ_SEND (req);	1534	REQ_SEND (req);
1047	}	1535	}
1048		1536
1049	void	1537	void
		1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1539	PROTOTYPE: $;$
		1540	PPCODE:
		1541	{
		1542	PerlIO *io = IoIFP (sv_2io (fh));
		1543	int fd = PerlIO_fileno (io);
		1544
		1545	if (fd < 0)
		1546	croak ("aio_close called with fd-less filehandle");
		1547
		1548	PerlIO_binmode (io, 0, 0, 0);
		1549
		1550	{
		1551	dREQ;
		1552
		1553	req->type = REQ_CLOSE;
		1554	req->sv1 = newSVsv (fh);
		1555	req->ptr1 = (void *)io;
		1556
		1557	REQ_SEND (req);
		1558	}
		1559	}
		1560
		1561	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1051	SV * fh
1052	UV offset
1053	UV length
1054	SV * data
1055	UV dataoffset
1056	SV * callback
1057	ALIAS:	1563	ALIAS:
1058	aio_read = REQ_READ	1564	aio_read = REQ_READ
1059	aio_write = REQ_WRITE	1565	aio_write = REQ_WRITE
1060	PROTOTYPE: $$$$$;$	1566	PROTOTYPE: $$$$$;$
1061	PPCODE:	1567	PPCODE:
1062	{	1568	{
1063	aio_req req;
1064	STRLEN svlen;	1569	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	1570	char *svptr = SvPVbyte (data, svlen);
		1571	UV len = SvUV (length);
1066		1572
1067	SvUPGRADE (data, SVt_PV);	1573	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	1574	SvPOK_on (data);
1069		1575
1070	if (dataoffset < 0)	1576	if (dataoffset < 0)
1071	dataoffset += svlen;	1577	dataoffset += svlen;
1072		1578
1073	if (dataoffset < 0 || dataoffset > svlen)	1579	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	1580	croak ("dataoffset outside of data scalar");
1075		1581
1076	if (ix == REQ_WRITE)	1582	if (ix == REQ_WRITE)
1077	{	1583	{
1078	/* write: check length and adjust. */	1584	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	1585	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	1586	len = svlen - dataoffset;
1081	}	1587	}
1082	else	1588	else
1083	{	1589	{
1084	/* read: grow scalar as necessary */	1590	/* read: grow scalar as necessary */
1085	svptr = SvGROW (data, length + dataoffset);	1591	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	1592	}
1087		1593
1088	if (length < 0)	1594	if (len < 0)
1089	croak ("length must not be negative");	1595	croak ("length must not be negative");
1090		1596
1091	{	1597	{
1092	dREQ;	1598	dREQ;
1093		1599
1094	req->type = ix;	1600	req->type = ix;
1095	req->fh = newSVsv (fh);	1601	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	1603	: IoOFP (sv_2io (fh)));
		1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	1605	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	1606	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1607	req->ptr1 = (char *)svptr + dataoffset;
		1608	req->stroffset = dataoffset;
1102		1609
1103	if (!SvREADONLY (data))	1610	if (!SvREADONLY (data))
1104	{	1611	{
1105	SvREADONLY_on (data);	1612	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1613	req->flags |= FLAG_SV2_RO_OFF;
1107	}	1614	}
1108		1615
1109	REQ_SEND;	1616	REQ_SEND;
1110	}	1617	}
1111	}	1618	}
1112		1619
1113	void	1620	void
		1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1622	PROTOTYPE: $$;$
		1623	PPCODE:
		1624	{
		1625	SV *data;
		1626	dREQ;
		1627
		1628	data = newSV (NAME_MAX);
		1629	SvPOK_on (data);
		1630
		1631	req->type = REQ_READLINK;
		1632	req->sv1 = newSVsv (path);
		1633	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1634	req->sv2 = data;
		1635	req->ptr1 = SvPVbyte_nolen (data);
		1636
		1637	REQ_SEND;
		1638	}
		1639
		1640	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1115	SV * out_fh
1116	SV * in_fh
1117	UV in_offset
1118	UV length
1119	SV * callback
1120	PROTOTYPE: $$$$;$	1642	PROTOTYPE: $$$$;$
1121	PPCODE:	1643	PPCODE:
1122	{	1644	{
1123	dREQ;	1645	dREQ;
1124		1646
1125	req->type = REQ_SENDFILE;	1647	req->type = REQ_SENDFILE;
1126	req->fh = newSVsv (out_fh);	1648	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	1650	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	1652	req->offs = SvVAL64 (in_offset);
1131	req->length = length;	1653	req->size = length;
1132		1654
1133	REQ_SEND;	1655	REQ_SEND;
1134	}	1656	}
1135		1657
1136	void	1658	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$	1660	PROTOTYPE: $$$;$
1143	PPCODE:	1661	PPCODE:
1144	{	1662	{
1145	dREQ;	1663	dREQ;
1146		1664
1147	req->type = REQ_READAHEAD;	1665	req->type = REQ_READAHEAD;
1148	req->fh = newSVsv (fh);	1666	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	1668	req->offs = SvVAL64 (offset);
1151	req->length = length;	1669	req->size = length;
1152		1670
1153	REQ_SEND;	1671	REQ_SEND;
1154	}	1672	}
1155		1673
1156	void	1674	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	1676	ALIAS:
1161	aio_stat = REQ_STAT	1677	aio_stat = REQ_STAT
1162	aio_lstat = REQ_LSTAT	1678	aio_lstat = REQ_LSTAT
1163	PPCODE:	1679	PPCODE:
1164	{	1680	{
1165	dREQ;	1681	dREQ;
1166		1682
1167	New (0, req->statdata, 1, Stat_t);	1683	req->ptr2 = malloc (sizeof (Stat_t));
1168	if (!req->statdata)	1684	if (!req->ptr2)
1169	{	1685	{
1170	req_free (req);	1686	req_destroy (req);
1171	croak ("out of memory during aio_req->statdata allocation");	1687	croak ("out of memory during aio_stat statdata allocation");
1172	}	1688	}
		1689
		1690	req->flags |= FLAG_PTR2_FREE;
		1691	req->sv1 = newSVsv (fh_or_path);
1173		1692
1174	if (SvPOK (fh_or_path))	1693	if (SvPOK (fh_or_path))
1175	{	1694	{
1176	req->type = ix;	1695	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	1696	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	1697	}
1180	else	1698	else
1181	{	1699	{
1182	req->type = REQ_FSTAT;	1700	req->type = REQ_FSTAT;
1183	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	1702	}
1186		1703
1187	REQ_SEND;	1704	REQ_SEND;
1188	}	1705	}
1189		1706
1190	void	1707	void
		1708	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1715	req->sv1 = newSVsv (fh_or_path);
		1716
		1717	if (SvPOK (fh_or_path))
		1718	{
		1719	req->type = REQ_UTIME;
		1720	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1721	}
		1722	else
		1723	{
		1724	req->type = REQ_FUTIME;
		1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1726	}
		1727
		1728	REQ_SEND;
		1729	}
		1730
		1731	void
		1732	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1733	PPCODE:
		1734	{
		1735	dREQ;
		1736
		1737	req->sv1 = newSVsv (fh_or_path);
		1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1739
		1740	if (SvPOK (fh_or_path))
		1741	{
		1742	req->type = REQ_TRUNCATE;
		1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1744	}
		1745	else
		1746	{
		1747	req->type = REQ_FTRUNCATE;
		1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1749	}
		1750
		1751	REQ_SEND;
		1752	}
		1753
		1754	void
		1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1756	PPCODE:
		1757	{
		1758	dREQ;
		1759
		1760	req->mode = mode;
		1761	req->sv1 = newSVsv (fh_or_path);
		1762
		1763	if (SvPOK (fh_or_path))
		1764	{
		1765	req->type = REQ_CHMOD;
		1766	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1767	}
		1768	else
		1769	{
		1770	req->type = REQ_FCHMOD;
		1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1772	}
		1773
		1774	REQ_SEND;
		1775	}
		1776
		1777	void
		1778	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1779	PPCODE:
		1780	{
		1781	dREQ;
		1782
		1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1785	req->sv1 = newSVsv (fh_or_path);
		1786
		1787	if (SvPOK (fh_or_path))
		1788	{
		1789	req->type = REQ_CHOWN;
		1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1791	}
		1792	else
		1793	{
		1794	req->type = REQ_FCHOWN;
		1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1796	}
		1797
		1798	REQ_SEND;
		1799	}
		1800
		1801	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	1803	ALIAS:
1195	aio_unlink = REQ_UNLINK	1804	aio_unlink = REQ_UNLINK
1196	aio_rmdir = REQ_RMDIR	1805	aio_rmdir = REQ_RMDIR
1197	aio_readdir = REQ_READDIR	1806	aio_readdir = REQ_READDIR
1198	PPCODE:	1807	PPCODE:
1199	{	1808	{
1200	dREQ;	1809	dREQ;
1201		1810
1202	req->type = ix;	1811	req->type = ix;
1203	req->data = newSVsv (pathname);	1812	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1813	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1814
		1815	REQ_SEND;
		1816	}
		1817
		1818	void
		1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1820	PPCODE:
		1821	{
		1822	dREQ;
1205		1823
		1824	req->type = REQ_MKDIR;
		1825	req->sv1 = newSVsv (pathname);
		1826	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1827	req->mode = mode;
		1828
1206	REQ_SEND;	1829	REQ_SEND;
1207	}	1830	}
1208		1831
1209	void	1832	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:	1834	ALIAS:
1215	aio_link = REQ_LINK	1835	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK	1836	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME	1837	aio_rename = REQ_RENAME
1218	PPCODE:	1838	PPCODE:
1219	{	1839	{
1220	dREQ;	1840	dREQ;
1221		1841
1222	req->type = ix;	1842	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1843	req->sv2 = newSVsv (oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1844	req->ptr2 = SvPVbyte_nolen (req->sv2);
1225	req->data = newSVsv (newpath);	1845	req->sv1 = newSVsv (newpath);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227		1847
1228	REQ_SEND;	1848	REQ_SEND;
1229	}	1849	}
1230		1850
1231	void	1851	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	1853	PPCODE:
1236	{	1854	{
1237	dREQ;	1855	dREQ;
1238		1856
1239	req->type = REQ_SLEEP;	1857	req->type = REQ_MKNOD;
1240	req->fd = delay < 0. ? 0 : delay;	1858	req->sv1 = newSVsv (pathname);
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1859	req->ptr1 = SvPVbyte_nolen (req->sv1);
1242		1860	req->mode = (mode_t)mode;
		1861	req->offs = dev;
		1862
1243	REQ_SEND;	1863	REQ_SEND;
1244	}	1864	}
1245		1865
1246	void	1866	void
		1867	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1868	PPCODE:
		1869	{
		1870	dREQ;
		1871
		1872	req->type = REQ_BUSY;
		1873	req->nv1 = delay < 0. ? 0. : delay;
		1874
		1875	REQ_SEND;
		1876	}
		1877
		1878	void
1247	aio_group (callback=&PL_sv_undef)	1879	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$	1880	PROTOTYPE: ;$
1250	PPCODE:	1881	PPCODE:
1251	{	1882	{
1252	dREQ;	1883	dREQ;
1253		1884
1254	req->type = REQ_GROUP;	1885	req->type = REQ_GROUP;
		1886
1255	req_send (req);	1887	req_send (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	1889	}
1259		1890
1260	void	1891	void
1261	aio_nop (callback=&PL_sv_undef)	1892	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback
1263	PPCODE:	1893	PPCODE:
1264	{	1894	{
1265	dREQ;	1895	dREQ;
1266		1896
1267	req->type = REQ_NOP;	1897	req->type = REQ_NOP;
1268		1898
1269	REQ_SEND;	1899	REQ_SEND;
1270	}	1900	}
1271		1901
1272	#if 0	1902	int
1273		1903	aioreq_pri (int pri = 0)
1274	void	1904	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1905	CODE:
		1906	RETVAL = next_pri - PRI_BIAS;
		1907	if (items > 0)
		1908	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1909	if (pri < PRI_MIN) pri = PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1910	if (pri > PRI_MAX) pri = PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1911	next_pri = pri + PRI_BIAS;
		1912	}
		1913	OUTPUT:
		1914	RETVAL
1280		1915
1281	#endif	1916	void
		1917	aioreq_nice (int nice = 0)
		1918	CODE:
		1919	nice = next_pri - nice;
		1920	if (nice < PRI_MIN) nice = PRI_MIN;
		1921	if (nice > PRI_MAX) nice = PRI_MAX;
		1922	next_pri = nice + PRI_BIAS;
1282		1923
1283	void	1924	void
1284	flush ()	1925	flush ()
1285	PROTOTYPE:	1926	PROTOTYPE:
1286	CODE:	1927	CODE:
…		…
1288	{	1929	{
1289	poll_wait ();	1930	poll_wait ();
1290	poll_cb ();	1931	poll_cb ();
1291	}	1932	}
1292		1933
1293	void	1934	int
1294	poll()	1935	poll()
1295	PROTOTYPE:	1936	PROTOTYPE:
1296	CODE:	1937	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	1938	poll_wait ();
1300	poll_cb ();	1939	RETVAL = poll_cb ();
1301	}	1940	OUTPUT:
		1941	RETVAL
1302		1942
1303	int	1943	int
1304	poll_fileno()	1944	poll_fileno()
1305	PROTOTYPE:	1945	PROTOTYPE:
1306	CODE:	1946	CODE:
…		…
1318		1958
1319	void	1959	void
1320	poll_wait()	1960	poll_wait()
1321	PROTOTYPE:	1961	PROTOTYPE:
1322	CODE:	1962	CODE:
1323	if (nreqs)
1324	poll_wait ();	1963	poll_wait ();
		1964
		1965	void
		1966	setsig (int signum = SIGIO)
		1967	PROTOTYPE: ;$
		1968	CODE:
		1969	{
		1970	if (block_sig_level)
		1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1972
		1973	X_LOCK (reslock);
		1974	main_tid = pthread_self ();
		1975	main_sig = signum;
		1976	X_UNLOCK (reslock);
		1977
		1978	if (main_sig && npending)
		1979	pthread_kill (main_tid, main_sig);
		1980	}
		1981
		1982	void
		1983	aio_block (SV *cb)
		1984	PROTOTYPE: &
		1985	PPCODE:
		1986	{
		1987	int count;
		1988
		1989	block_sig ();
		1990	PUSHMARK (SP);
		1991	PUTBACK;
		1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1993	SPAGAIN;
		1994	unblock_sig ();
		1995
		1996	if (SvTRUE (ERRSV))
		1997	croak (0);
		1998
		1999	XSRETURN (count);
		2000	}
1325		2001
1326	int	2002	int
1327	nreqs()	2003	nreqs()
1328	PROTOTYPE:	2004	PROTOTYPE:
1329	CODE:	2005	CODE:
1330	RETVAL = nreqs;	2006	RETVAL = nreqs;
1331	OUTPUT:	2007	OUTPUT:
1332	RETVAL	2008	RETVAL
1333		2009
		2010	int
		2011	nready()
		2012	PROTOTYPE:
		2013	CODE:
		2014	RETVAL = get_nready ();
		2015	OUTPUT:
		2016	RETVAL
		2017
		2018	int
		2019	npending()
		2020	PROTOTYPE:
		2021	CODE:
		2022	RETVAL = get_npending ();
		2023	OUTPUT:
		2024	RETVAL
		2025
		2026	int
		2027	nthreads()
		2028	PROTOTYPE:
		2029	CODE:
		2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2031	RETVAL = started;
		2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2033	OUTPUT:
		2034	RETVAL
		2035
1334	PROTOTYPES: DISABLE	2036	PROTOTYPES: DISABLE
1335		2037
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		2039
1338	void	2040	void
1339	cancel (aio_req_ornot req)	2041	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	2042	CODE:
1342	req_cancel (req);	2043	req_cancel (req);
1343		2044
1344	void	2045	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1354	PPCODE:	2055	PPCODE:
1355	{	2056	{
1356	int i;	2057	int i;
1357	aio_req req;	2058	aio_req req;
1358		2059
		2060	if (main_sig && !block_sig_level)
		2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2062
1359	if (grp->fd == 2)	2063	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		2065
1362	for (i = 1; i < items; ++i )	2066	for (i = 1; i < items; ++i )
1363	{	2067	{
1364	if (GIMME_V != G_VOID)	2068	if (GIMME_V != G_VOID)
…		…
1366		2070
1367	req = SvAIO_REQ (ST (i));	2071	req = SvAIO_REQ (ST (i));
1368		2072
1369	if (req)	2073	if (req)
1370	{	2074	{
1371	++grp->length;	2075	++grp->size;
1372	req->grp = grp;	2076	req->grp = grp;
1373		2077
1374	req->grp_prev = 0;	2078	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;	2079	req->grp_next = grp->grp_first;
1376		2080
…		…
1381	}	2085	}
1382	}	2086	}
1383	}	2087	}
1384		2088
1385	void	2089	void
		2090	cancel_subs (aio_req_ornot req)
		2091	CODE:
		2092	req_cancel_subs (req);
		2093
		2094	void
1386	result (aio_req grp, ...)	2095	result (aio_req grp, ...)
1387	CODE:	2096	CODE:
1388	{	2097	{
1389	int i;	2098	int i;
		2099	AV *av;
		2100
		2101	grp->errorno = errno;
		2102
1390	AV *av = newAV ();	2103	av = newAV ();
1391		2104
1392	for (i = 1; i < items; ++i )	2105	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	2106	av_push (av, newSVsv (ST (i)));
1394		2107
1395	SvREFCNT_dec (grp->data);	2108	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	2109	grp->sv1 = (SV *)av;
1397	}	2110	}
1398		2111
1399	void	2112	void
		2113	errno (aio_req grp, int errorno = errno)
		2114	CODE:
		2115	grp->errorno = errorno;
		2116
		2117	void
1400	feed_limit (aio_req grp, int limit)	2118	limit (aio_req grp, int limit)
1401	CODE:	2119	CODE:
1402	grp->fd2 = limit;	2120	grp->int2 = limit;
1403	aio_grp_feed (grp);	2121	aio_grp_feed (grp);
1404		2122
1405	void	2123	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	2124	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	2125	CODE:
1408	{	2126	{
1409	SvREFCNT_dec (grp->fh2);	2127	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	2128	grp->sv2 = newSVsv (callback);
1411		2129
1412	if (grp->fd2 <= 0)	2130	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	2131	grp->int2 = 2;
1414		2132
1415	aio_grp_feed (grp);	2133	aio_grp_feed (grp);
1416	}	2134	}
1417		2135

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