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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.109 by root, Sat Oct 6 14:05:19 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	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */	472	SAVETMPS;
213	pthread_mutex_lock (&reslock);	473	PUSHMARK (SP);
214	#endif	474	EXTEND (SP, 1);
215	req = ress;
216	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217	pthread_mutex_unlock (&reslock);
218	#endif
219		475
220	if (req)	476	switch (req->type)
221	return;	477	{
		478	case REQ_READDIR:
		479	{
		480	SV *rv = &PL_sv_undef;
222		481
223	FD_ZERO(&rfd);	482	if (req->result >= 0)
224	FD_SET(respipe [0], &rfd);	483	{
		484	int i;
		485	char *buf = req->ptr2;
		486	AV *av = newAV ();
225		487
226	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 = (SV *)gv;
		530	}
		531
		532	PUSHs (fh);
		533	}
		534	break;
		535
		536	case REQ_GROUP:
		537	req->int1 = 2; /* mark group as finished */
		538
		539	if (req->sv1)
		540	{
		541	int i;
		542	AV *av = (AV *)req->sv1;
		543
		544	EXTEND (SP, AvFILL (av) + 1);
		545	for (i = 0; i <= AvFILL (av); ++i)
		546	PUSHs (*av_fetch (av, i, 0));
		547	}
		548	break;
		549
		550	case REQ_NOP:
		551	case REQ_BUSY:
		552	break;
		553
		554	case REQ_READLINK:
		555	if (req->result > 0)
		556	{
		557	SvCUR_set (req->sv2, req->result);
		558	*SvEND (req->sv2) = 0;
		559	PUSHs (req->sv2);
		560	}
		561	break;
		562
		563	case REQ_STAT:
		564	case REQ_LSTAT:
		565	case REQ_FSTAT:
		566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		567	PL_laststatval = req->result;
		568	PL_statcache = *(Stat_t *)(req->ptr2);
		569	PUSHs (sv_2mortal (newSViv (req->result)));
		570	break;
		571
		572	case REQ_READ:
		573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		574	*SvEND (req->sv2) = 0;
		575	PUSHs (sv_2mortal (newSViv (req->result)));
		576	break;
		577
		578	default:
		579	PUSHs (sv_2mortal (newSViv (req->result)));
		580	break;
		581	}
		582
		583	errno = req->errorno;
		584
		585	PUTBACK;
		586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		587	SPAGAIN;
		588
		589	FREETMPS;
		590	LEAVE;
		591
		592	PUTBACK;
227	}	593	}
228	}
229		594
230	static void req_invoke (aio_req req)
231	{
232	dSP;
233	int errorno = errno;
234
235	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236	return;
237
238	errno = req->errorno;
239
240	ENTER;
241	SAVETMPS;
242	PUSHMARK (SP);
243	EXTEND (SP, 1);
244
245	switch (req->type)
246	{
247	case REQ_READDIR:
248	{
249	SV *rv = &PL_sv_undef;
250
251	if (req->result >= 0)
252	{
253	char *buf = req->data2ptr;
254	AV *av = newAV ();
255
256	while (req->result)
257	{
258	SV *sv = newSVpv (buf, 0);
259
260	av_push (av, sv);
261	buf += SvCUR (sv) + 1;
262	req->result--;
263	}
264
265	rv = sv_2mortal (newRV_noinc ((SV *)av));
266	}
267
268	PUSHs (rv);
269	}
270	break;
271
272	case REQ_OPEN:
273	{
274	/* convert fd to fh */
275	SV *fh;
276
277	PUSHs (sv_2mortal (newSViv (req->result)));
278	PUTBACK;
279	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280	SPAGAIN;
281
282	fh = SvREFCNT_inc (POPs);
283
284	PUSHMARK (SP);
285	XPUSHs (sv_2mortal (fh));
286	}
287	break;
288
289	case REQ_GROUP:
290	req->fd = 2; /* mark group as finished */
291
292	if (req->data)
293	{
294	int i;
295	AV *av = (AV *)req->data;
296
297	EXTEND (SP, AvFILL (av) + 1);
298	for (i = 0; i <= AvFILL (av); ++i)
299	PUSHs (*av_fetch (av, i, 0));
300	}
301	break;
302
303	case REQ_NOP:
304	case REQ_SLEEP:
305	break;
306
307	default:
308	PUSHs (sv_2mortal (newSViv (req->result)));
309	break;
310	}
311
312
313	PUTBACK;
314	call_sv (req->callback, G_VOID | G_EVAL);
315	SPAGAIN;
316
317	FREETMPS;
318	LEAVE;
319
320	errno = errorno;
321
322	if (SvTRUE (ERRSV))
323	{
324	req_free (req);
325	croak (0);
326	}
327	}
328
329	static void req_free (aio_req req)
330	{
331	if (req->grp)	595	if (req->grp)
332	{	596	{
333	aio_req grp = req->grp;	597	aio_req grp = req->grp;
334		598
335	/* unlink request */	599	/* unlink request */
…		…
340	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
341		605
342	aio_grp_dec (grp);	606	aio_grp_dec (grp);
343	}	607	}
344		608
		609	return !SvTRUE (ERRSV);
		610	}
		611
		612	static void req_destroy (aio_req req)
		613	{
345	if (req->self)	614	if (req->self)
346	{	615	{
347	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
348	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
349	}	618	}
350		619
351	SvREFCNT_dec (req->data);
352	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
353	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
354	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
355	Safefree (req->statdata);
356		623
357	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
358	free (req->data2ptr);	625	free (req->ptr2);
359		626
360	Safefree (req);	627	Safefree (req);
361	}	628	}
362		629
		630	static void req_cancel_subs (aio_req grp)
		631	{
		632	aio_req sub;
		633
		634	if (grp->type != REQ_GROUP)
		635	return;
		636
		637	SvREFCNT_dec (grp->sv2);
		638	grp->sv2 = 0;
		639
		640	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		641	req_cancel (sub);
		642	}
		643
363	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
364	{	645	{
365	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
366		647
367	if (req->type == REQ_GROUP)	648	req_cancel_subs (req);
		649	}
		650
		651	#ifdef USE_SOCKETS_AS_HANDLES
		652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		653	#else
		654	# define TO_SOCKET(x) (x)
		655	#endif
		656
		657	static void
		658	create_respipe ()
		659	{
		660	int old_readfd = respipe [0];
		661
		662	if (respipe [1] >= 0)
		663	respipe_close (TO_SOCKET (respipe [1]));
		664
		665	#ifdef _WIN32
		666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		667	#else
		668	if (pipe (respipe))
		669	#endif
		670	croak ("unable to initialize result pipe");
		671
		672	if (old_readfd >= 0)
368	{	673	{
369	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
370		676
371	for (sub = req->grp_first; sub; sub = sub->grp_next)	677	respipe_close (respipe [0]);
372	req_cancel (sub);	678	respipe [0] = old_readfd;
		679	}
		680
		681	#ifdef _WIN32
		682	int arg = 1;
		683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		685	#else
		686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		688	#endif
		689	croak ("unable to initialize result pipe(3)");
		690
		691	respipe_osf [0] = TO_SOCKET (respipe [0]);
		692	respipe_osf [1] = TO_SOCKET (respipe [1]);
		693	}
		694
		695	X_THREAD_PROC (aio_proc);
		696
		697	static void start_thread (void)
		698	{
		699	worker *wrk = calloc (1, sizeof (worker));
		700
		701	if (!wrk)
		702	croak ("unable to allocate worker thread data");
		703
		704	X_LOCK (wrklock);
		705
		706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		707	{
		708	wrk->prev = &wrk_first;
		709	wrk->next = wrk_first.next;
		710	wrk_first.next->prev = wrk;
		711	wrk_first.next = wrk;
		712	++started;
		713	}
		714	else
		715	free (wrk);
		716
		717	X_UNLOCK (wrklock);
		718	}
		719
		720	static void maybe_start_thread ()
		721	{
		722	if (get_nthreads () >= wanted)
		723	return;
		724
		725	/* todo: maybe use idle here, but might be less exact */
		726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		727	return;
		728
		729	start_thread ();
		730	}
		731
		732	static void req_send (aio_req req)
		733	{
		734	block_sig ();
		735
		736	++nreqs;
		737
		738	X_LOCK (reqlock);
		739	++nready;
		740	reqq_push (&req_queue, req);
		741	X_COND_SIGNAL (reqwait);
		742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
		745
		746	maybe_start_thread ();
		747	}
		748
		749	static void end_thread (void)
		750	{
		751	aio_req req;
		752
		753	Newz (0, req, 1, aio_cb);
		754
		755	req->type = REQ_QUIT;
		756	req->pri = PRI_MAX + PRI_BIAS;
		757
		758	X_LOCK (reqlock);
		759	reqq_push (&req_queue, req);
		760	X_COND_SIGNAL (reqwait);
		761	X_UNLOCK (reqlock);
		762
		763	X_LOCK (wrklock);
		764	--started;
		765	X_UNLOCK (wrklock);
		766	}
		767
		768	static void set_max_idle (int nthreads)
		769	{
		770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		771	max_idle = nthreads <= 0 ? 1 : nthreads;
		772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		773	}
		774
		775	static void min_parallel (int nthreads)
		776	{
		777	if (wanted < nthreads)
		778	wanted = nthreads;
		779	}
		780
		781	static void max_parallel (int nthreads)
		782	{
		783	if (wanted > nthreads)
		784	wanted = nthreads;
		785
		786	while (started > wanted)
		787	end_thread ();
		788	}
		789
		790	static void poll_wait ()
		791	{
		792	fd_set rfd;
		793
		794	while (nreqs)
		795	{
		796	int size;
		797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		798	size = res_queue.size;
		799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		800
		801	if (size)
		802	return;
		803
		804	maybe_start_thread ();
		805
		806	FD_ZERO (&rfd);
		807	FD_SET (respipe [0], &rfd);
		808
		809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
373	}	810	}
374	}	811	}
375		812
376	static int poll_cb ()	813	static int poll_cb ()
377	{	814	{
378	dSP;	815	dSP;
379	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
380	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
381	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
382		826
383	for (;;)	827	for (;;)
384	{	828	{
385	pthread_mutex_lock (&reslock);	829	for (;;)
386	req = ress;
387
388	if (req)
389	{	830	{
390	ress = req->next;	831	maybe_start_thread ();
391		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
392	if (!ress)	836	if (req)
393	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
394	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
395	char buf [32];	843	char buf [4];
396	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
397	;	846	}
		847	}
398		848
		849	X_UNLOCK (reslock);
		850
		851	if (!req)
		852	break;
		853
		854	--nreqs;
		855
		856	if (req->type == REQ_GROUP && req->size)
		857	{
		858	req->int1 = 1; /* mark request as delayed */
		859	continue;
		860	}
		861	else
		862	{
		863	if (!req_invoke (req))
		864	{
		865	req_destroy (req);
		866	unblock_sig ();
		867	croak (0);
		868	}
		869
		870	count++;
		871	}
		872
		873	req_destroy (req);
		874
		875	if (maxreqs && !--maxreqs)
		876	break;
		877
		878	if (max_poll_time)
		879	{
		880	gettimeofday (&tv_now, 0);
		881
		882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
399	rese = 0;	883	break;
400	}	884	}
401	}	885	}
402		886
403	pthread_mutex_unlock (&reslock);	887	if (nreqs <= max_outstanding)
404
405	if (!req)
406	break;	888	break;
407		889
408	--nreqs;	890	poll_wait ();
409		891
410	if (req->type == REQ_QUIT)	892	++maxreqs;
411	started--;
412	else if (req->type == REQ_GROUP && req->length)
413	{
414	req->fd = 1; /* mark request as delayed */
415	continue;
416	}
417	else
418	{
419	if (req->type == REQ_READ)
420	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421
422	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
423	SvREADONLY_off (req->data);
424
425	if (req->statdata)
426	{
427	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428	PL_laststatval = req->result;
429	PL_statcache = *(req->statdata);
430	}
431
432	req_invoke (req);
433
434	count++;
435	}
436
437	req_free (req);
438	}	893	}
439		894
		895	unblock_sig ();
440	return count;	896	return count;
441	}
442
443	static void *aio_proc(void *arg);
444
445	static void start_thread (void)
446	{
447	sigset_t fullsigset, oldsigset;
448	pthread_t tid;
449	pthread_attr_t attr;
450
451	pthread_attr_init (&attr);
452	pthread_attr_setstacksize (&attr, STACKSIZE);
453	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
454
455	sigfillset (&fullsigset);
456	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457
458	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
459	started++;
460
461	sigprocmask (SIG_SETMASK, &oldsigset, 0);
462	}
463
464	static void req_send (aio_req req)
465	{
466	while (started < wanted && nreqs >= started)
467	start_thread ();
468
469	++nreqs;
470
471	pthread_mutex_lock (&reqlock);
472
473	req->next = 0;
474
475	if (reqe)
476	{
477	reqe->next = req;
478	reqe = req;
479	}
480	else
481	reqe = reqs = req;
482
483	pthread_cond_signal (&reqwait);
484	pthread_mutex_unlock (&reqlock);
485
486	if (nreqs > max_outstanding)
487	for (;;)
488	{
489	poll_cb ();
490
491	if (nreqs <= max_outstanding)
492	break;
493
494	poll_wait ();
495	}
496	}
497
498	static void end_thread (void)
499	{
500	aio_req req;
501	Newz (0, req, 1, aio_cb);
502	req->type = REQ_QUIT;
503
504	req_send (req);
505	}
506
507	static void min_parallel (int nthreads)
508	{
509	if (wanted < nthreads)
510	wanted = nthreads;
511	}
512
513	static void max_parallel (int nthreads)
514	{
515	int cur = started;
516
517	if (wanted > nthreads)
518	wanted = nthreads;
519
520	while (cur > wanted)
521	{
522	end_thread ();
523	cur--;
524	}
525
526	while (started > wanted)
527	{
528	poll_wait ();
529	poll_cb ();
530	}
531	}
532
533	static void create_pipe ()
534	{
535	if (pipe (respipe))
536	croak ("unable to initialize result pipe");
537
538	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
539	croak ("cannot set result pipe to nonblocking mode");
540
541	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
542	croak ("cannot set result pipe to nonblocking mode");
543	}	897	}
544		898
545	/*****************************************************************************/	899	/*****************************************************************************/
546	/* work around various missing functions */	900	/* work around various missing functions */
547		901
…		…
552	/*	906	/*
553	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
554	* normal read/write by using a mutex. slows down execution a lot,	908	* normal read/write by using a mutex. slows down execution a lot,
555	* but that's your problem, not mine.	909	* but that's your problem, not mine.
556	*/	910	*/
557	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
558		912
559	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560	{	914	{
561	ssize_t res;	915	ssize_t res;
562	off_t ooffset;	916	off_t ooffset;
563		917
564	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
567	res = read (fd, buf, count);	921	res = read (fd, buf, count);
568	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
570		924
571	return res;	925	return res;
572	}	926	}
573		927
574	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575	{	929	{
576	ssize_t res;	930	ssize_t res;
577	off_t ooffset;	931	off_t ooffset;
578		932
579	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
580	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
581	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
582	res = write (fd, buf, count);	936	res = write (fd, buf, count);
583	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
584	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
585		939
586	return res;	940	return res;
587	}	941	}
		942	#endif
		943
		944	#ifndef HAVE_FUTIMES
		945
		946	# define utimes(path,times) aio_utimes (path, times)
		947	# define futimes(fd,times) aio_futimes (fd, times)
		948
		949	int aio_utimes (const char *filename, const struct timeval times[2])
		950	{
		951	if (times)
		952	{
		953	struct utimbuf buf;
		954
		955	buf.actime = times[0].tv_sec;
		956	buf.modtime = times[1].tv_sec;
		957
		958	return utime (filename, &buf);
		959	}
		960	else
		961	return utime (filename, 0);
		962	}
		963
		964	int aio_futimes (int fd, const struct timeval tv[2])
		965	{
		966	errno = ENOSYS;
		967	return -1;
		968	}
		969
588	#endif	970	#endif
589		971
590	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
591	# define fdatasync fsync	973	# define fdatasync fsync
592	#endif	974	#endif
593		975
594	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
595	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
596		978
597	static ssize_t readahead (int fd, off_t offset, size_t count)	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
598	{	980	{
599	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
600		983
601	while (count > 0)	984	while (todo > 0)
602	{	985	{
603	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
604		987
605	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
606	offset += len;	989	offset += len;
607	count -= len;	990	todo -= len;
608	}	991	}
609		992
610	errno = 0;	993	errno = 0;
		994	return count;
611	}	995	}
		996
612	#endif	997	#endif
613		998
614	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
615	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
616		1001
617	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
618		1003
619	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
620	{	1005	{
621	struct dirent *e;	1006	X_DIRENT *e;
622	int errorno;	1007	int errorno;
623		1008
624	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
625		1010
626	e = readdir (dirp);	1011	e = readdir (dirp);
627	errorno = errno;	1012	errorno = errno;
628		1013
629	if (e)	1014	if (e)
…		…
632	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
633	}	1018	}
634	else	1019	else
635	*res = 0;	1020	*res = 0;
636		1021
637	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
638		1023
639	errno = errorno;	1024	errno = errorno;
640	return e ? 0 : -1;	1025	return e ? 0 : -1;
641	}	1026	}
642	#endif	1027	#endif
643		1028
644	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
645	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
646	{	1031	{
647	ssize_t res;	1032	ssize_t res;
648		1033
649	if (!count)	1034	if (!count)
650	return 0;	1035	return 0;
…		…
661	{	1046	{
662	off_t sbytes;	1047	off_t sbytes;
663	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664		1049
665	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
666	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
667	res = sbytes;	1052	res = sbytes;
668	}	1053	}
669		1054
670	# elif __hpux	1055	# elif __hpux
671	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
699	#endif	1084	#endif
700	)	1085	)
701	)	1086	)
702	{	1087	{
703	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
704	char buf[4096];	1089	dBUF;
		1090
705	res = 0;	1091	res = 0;
706		1092
707	while (count)	1093	while (count)
708	{	1094	{
709	ssize_t cnt;	1095	ssize_t cnt;
710		1096
711	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
712		1098
713	if (cnt <= 0)	1099	if (cnt <= 0)
714	{	1100	{
715	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
716	break;	1102	break;
717	}	1103	}
718		1104
719	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
720		1106
721	if (cnt <= 0)	1107	if (cnt <= 0)
722	{	1108	{
723	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
724	break;	1110	break;
…		…
732		1118
733	return res;	1119	return res;
734	}	1120	}
735		1121
736	/* read a full directory */	1122	/* read a full directory */
737	static int scandir_ (const char *path, void **namesp)	1123	static void scandir_ (aio_req req, worker *self)
738	{	1124	{
739	DIR *dirp = opendir (path);	1125	DIR *dirp;
740	union	1126	union
741	{	1127	{
742	struct dirent d;	1128	X_DIRENT d;
743	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
744	} u;	1130	} *u;
745	struct dirent *entp;	1131	X_DIRENT *entp;
746	char *name, *names;	1132	char *name, *names;
747	int memlen = 4096;	1133	int memlen = 4096;
748	int memofs = 0;	1134	int memofs = 0;
749	int res = 0;	1135	int res = 0;
750	int errorno;
751		1136
752	if (!dirp)	1137	X_LOCK (wrklock);
753	return -1;	1138	self->dirp = dirp = opendir (req->ptr1);
754		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
755	names = malloc (memlen);	1141	req->ptr2 = names = malloc (memlen);
		1142	X_UNLOCK (wrklock);
		1143
		1144	if (dirp && u && names)
		1145	for (;;)
		1146	{
		1147	errno = 0;
		1148	readdir_r (dirp, &u->d, &entp);
		1149
		1150	if (!entp)
		1151	break;
		1152
		1153	name = entp->d_name;
		1154
		1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1156	{
		1157	int len = strlen (name) + 1;
		1158
		1159	res++;
		1160
		1161	while (memofs + len > memlen)
		1162	{
		1163	memlen *= 2;
		1164	X_LOCK (wrklock);
		1165	req->ptr2 = names = realloc (names, memlen);
		1166	X_UNLOCK (wrklock);
		1167
		1168	if (!names)
		1169	break;
		1170	}
		1171
		1172	memcpy (names + memofs, name, len);
		1173	memofs += len;
		1174	}
		1175	}
		1176
		1177	if (errno)
		1178	res = -1;
		1179
		1180	req->result = res;
		1181	}
		1182
		1183	/*****************************************************************************/
		1184
		1185	X_THREAD_PROC (aio_proc)
		1186	{
		1187	{//D
		1188	aio_req req;
		1189	struct timespec ts;
		1190	worker *self = (worker *)thr_arg;
		1191
		1192	/* try to distribute timeouts somewhat randomly */
		1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
756		1194
757	for (;;)	1195	for (;;)
758	{	1196	{
759	errno = 0, readdir_r (dirp, &u.d, &entp);	1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
760		1198
761	if (!entp)	1199	X_LOCK (reqlock);
762	break;
763
764	name = entp->d_name;
765
766	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767	{
768	int len = strlen (name) + 1;
769
770	res++;
771
772	while (memofs + len > memlen)
773	{
774	memlen *= 2;
775	names = realloc (names, memlen);
776	if (!names)
777	break;
778	}
779
780	memcpy (names + memofs, name, len);
781	memofs += len;
782	}
783	}
784
785	errorno = errno;
786	closedir (dirp);
787
788	if (errorno)
789	{
790	free (names);
791	errno = errorno;
792	res = -1;
793	}
794
795	*namesp = (void *)names;
796	return res;
797	}
798
799	/*****************************************************************************/
800
801	static void *aio_proc (void *thr_arg)
802	{
803	aio_req req;
804	int type;
805
806	do
807	{
808	pthread_mutex_lock (&reqlock);
809		1200
810	for (;;)	1201	for (;;)
811	{	1202	{
812	req = reqs;	1203	self->req = req = reqq_shift (&req_queue);
813
814	if (reqs)
815	{
816	reqs = reqs->next;
817	if (!reqs) reqe = 0;
818	}
819		1204
820	if (req)	1205	if (req)
821	break;	1206	break;
822		1207
823	pthread_cond_wait (&reqwait, &reqlock);	1208	++idle;
		1209
		1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1211	== ETIMEDOUT)
		1212	{
		1213	if (idle > max_idle)
		1214	{
		1215	--idle;
		1216	X_UNLOCK (reqlock);
		1217	X_LOCK (wrklock);
		1218	--started;
		1219	X_UNLOCK (wrklock);
		1220	goto quit;
		1221	}
		1222
		1223	/* we are allowed to idle, so do so without any timeout */
		1224	X_COND_WAIT (reqwait, reqlock);
		1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1226	}
		1227
		1228	--idle;
824	}	1229	}
825		1230
826	pthread_mutex_unlock (&reqlock);	1231	--nready;
		1232
		1233	X_UNLOCK (reqlock);
827		1234
828	errno = 0; /* strictly unnecessary */	1235	errno = 0; /* strictly unnecessary */
829	type = req->type; /* remember type for QUIT check */
830		1236
831	if (!(req->flags & FLAG_CANCELLED))	1237	if (!(req->flags & FLAG_CANCELLED))
832	switch (type)	1238	switch (req->type)
833	{	1239	{
834	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1240	case REQ_READ: req->result = req->offs >= 0
835	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1241	? pread (req->int1, req->ptr1, req->size, req->offs)
		1242	: read (req->int1, req->ptr1, req->size); break;
		1243	case REQ_WRITE: req->result = req->offs >= 0
		1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1245	: write (req->int1, req->ptr1, req->size); break;
836		1246
837	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
838	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
839		1249
840	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
841	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
842	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
843		1253
		1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1260
844	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
845	case REQ_CLOSE: req->result = close (req->fd); break;	1262	case REQ_CLOSE: req->result = close (req->int1); break;
846	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
847	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
848	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
849	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
850	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
851		1271
852	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1272	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
853	case REQ_FSYNC: req->result = fsync (req->fd); break;	1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
854	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1274	case REQ_READDIR: scandir_ (req, self); break;
855		1275
856	case REQ_SLEEP:	1276	case REQ_BUSY:
		1277	#ifdef _WIN32
		1278	Sleep (req->nv1 * 1000.);
		1279	#else
857	{	1280	{
858	struct timeval tv;	1281	struct timeval tv;
859		1282
860	tv.tv_sec = req->fd;	1283	tv.tv_sec = req->nv1;
861	tv.tv_usec = req->fd2;	1284	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
862		1285
863	req->result = select (0, 0, 0, 0, &tv);	1286	req->result = select (0, 0, 0, 0, &tv);
864	}	1287	}
		1288	#endif
		1289	break;
		1290
		1291	case REQ_UTIME:
		1292	case REQ_FUTIME:
		1293	{
		1294	struct timeval tv[2];
		1295	struct timeval *times;
		1296
		1297	if (req->nv1 != -1. || req->nv2 != -1.)
		1298	{
		1299	tv[0].tv_sec = req->nv1;
		1300	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1301	tv[1].tv_sec = req->nv2;
		1302	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1303
		1304	times = tv;
		1305	}
		1306	else
		1307	times = 0;
		1308
		1309
		1310	req->result = req->type == REQ_FUTIME
		1311	? futimes (req->int1, times)
		1312	: utimes (req->ptr1, times);
		1313	}
865		1314
866	case REQ_GROUP:	1315	case REQ_GROUP:
867	case REQ_NOP:	1316	case REQ_NOP:
		1317	break;
		1318
868	case REQ_QUIT:	1319	case REQ_QUIT:
869	break;	1320	goto quit;
870		1321
871	default:	1322	default:
872	req->result = ENOSYS;	1323	req->result = -1;
873	break;	1324	break;
874	}	1325	}
875		1326
876	req->errorno = errno;	1327	req->errorno = errno;
877		1328
878	pthread_mutex_lock (&reslock);	1329	X_LOCK (reslock);
879		1330
880	req->next = 0;	1331	++npending;
881		1332
882	if (rese)	1333	if (!reqq_push (&res_queue, req))
883	{	1334	{
884	rese->next = req;	1335	/* write a dummy byte to the pipe so fh becomes ready */
885	rese = req;	1336	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1337
		1338	/* optionally signal the main thread asynchronously */
		1339	if (main_sig)
		1340	pthread_kill (main_tid, main_sig);
886	}	1341	}
887	else
888	{
889	rese = ress = req;
890		1342
891	/* write a dummy byte to the pipe so fh becomes ready */	1343	self->req = 0;
892	write (respipe [1], &respipe, 1);	1344	worker_clear (self);
893	}
894		1345
895	pthread_mutex_unlock (&reslock);	1346	X_UNLOCK (reslock);
896	}	1347	}
897	while (type != REQ_QUIT);	1348
		1349	quit:
		1350	X_LOCK (wrklock);
		1351	worker_free (self);
		1352	X_UNLOCK (wrklock);
898		1353
899	return 0;	1354	return 0;
		1355	}//D
900	}	1356	}
901		1357
902	/*****************************************************************************/	1358	/*****************************************************************************/
903		1359
904	static void atfork_prepare (void)	1360	static void atfork_prepare (void)
905	{	1361	{
906	pthread_mutex_lock (&reqlock);	1362	X_LOCK (wrklock);
907	pthread_mutex_lock (&reslock);	1363	X_LOCK (reqlock);
		1364	X_LOCK (reslock);
908	#if !HAVE_PREADWRITE	1365	#if !HAVE_PREADWRITE
909	pthread_mutex_lock (&preadwritelock);	1366	X_LOCK (preadwritelock);
910	#endif	1367	#endif
911	#if !HAVE_READDIR_R	1368	#if !HAVE_READDIR_R
912	pthread_mutex_lock (&readdirlock);	1369	X_LOCK (readdirlock);
913	#endif	1370	#endif
914	}	1371	}
915		1372
916	static void atfork_parent (void)	1373	static void atfork_parent (void)
917	{	1374	{
918	#if !HAVE_READDIR_R	1375	#if !HAVE_READDIR_R
919	pthread_mutex_unlock (&readdirlock);	1376	X_UNLOCK (readdirlock);
920	#endif	1377	#endif
921	#if !HAVE_PREADWRITE	1378	#if !HAVE_PREADWRITE
922	pthread_mutex_unlock (&preadwritelock);	1379	X_UNLOCK (preadwritelock);
923	#endif	1380	#endif
924	pthread_mutex_unlock (&reslock);	1381	X_UNLOCK (reslock);
925	pthread_mutex_unlock (&reqlock);	1382	X_UNLOCK (reqlock);
		1383	X_UNLOCK (wrklock);
926	}	1384	}
927		1385
928	static void atfork_child (void)	1386	static void atfork_child (void)
929	{	1387	{
930	aio_req prv;	1388	aio_req prv;
931		1389
932	started = 0;	1390	while (prv = reqq_shift (&req_queue))
		1391	req_destroy (prv);
933		1392
934	while (reqs)	1393	while (prv = reqq_shift (&res_queue))
		1394	req_destroy (prv);
		1395
		1396	while (wrk_first.next != &wrk_first)
935	{	1397	{
936	prv = reqs;	1398	worker *wrk = wrk_first.next;
937	reqs = prv->next;	1399
		1400	if (wrk->req)
		1401	req_destroy (wrk->req);
		1402
		1403	worker_clear (wrk);
938	req_free (prv);	1404	worker_free (wrk);
939	}	1405	}
940		1406
941	reqs = reqe = 0;	1407	started = 0;
942		1408	idle = 0;
943	while (ress)	1409	nreqs = 0;
944	{	1410	nready = 0;
945	prv = ress;	1411	npending = 0;
946	ress = prv->next;
947	req_free (prv);
948	}
949
950	ress = rese = 0;
951		1412
952	close (respipe [0]);
953	close (respipe [1]);
954	create_pipe ();	1413	create_respipe ();
955		1414
956	atfork_parent ();	1415	atfork_parent ();
957	}	1416	}
958		1417
959	#define dREQ \	1418	#define dREQ \
…		…
981		1440
982	PROTOTYPES: ENABLE	1441	PROTOTYPES: ENABLE
983		1442
984	BOOT:	1443	BOOT:
985	{	1444	{
986	HV *stash = gv_stashpv ("IO::AIO", 1);	1445	stash = gv_stashpv ("IO::AIO", 1);
		1446
987	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1452	#ifdef _WIN32
		1453	X_MUTEX_CHECK (wrklock);
		1454	X_MUTEX_CHECK (reslock);
		1455	X_MUTEX_CHECK (reqlock);
		1456	X_MUTEX_CHECK (reqwait);
		1457	X_MUTEX_CHECK (preadwritelock);
		1458	X_MUTEX_CHECK (readdirlock);
990		1459
991	create_pipe ();	1460	X_COND_CHECK (reqwait);
		1461	#else
		1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1464	#endif
		1465
		1466	create_respipe ();
		1467
992	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
993	}	1469	}
994		1470
995	void	1471	void
996	min_parallel (nthreads)	1472	max_poll_reqs (int nreqs)
997	int nthreads
998	PROTOTYPE: $	1473	PROTOTYPE: $
		1474	CODE:
		1475	max_poll_reqs = nreqs;
999		1476
1000	void	1477	void
1001	max_parallel (nthreads)	1478	max_poll_time (double nseconds)
1002	int nthreads
1003	PROTOTYPE: $	1479	PROTOTYPE: $
		1480	CODE:
		1481	max_poll_time = nseconds * AIO_TICKS;
		1482
		1483	void
		1484	min_parallel (int nthreads)
		1485	PROTOTYPE: $
		1486
		1487	void
		1488	max_parallel (int nthreads)
		1489	PROTOTYPE: $
		1490
		1491	void
		1492	max_idle (int nthreads)
		1493	PROTOTYPE: $
		1494	CODE:
		1495	set_max_idle (nthreads);
1004		1496
1005	int	1497	int
1006	max_outstanding (nreqs)	1498	max_outstanding (int maxreqs)
1007	int nreqs	1499	PROTOTYPE: $
1008	PROTOTYPE: $
1009	CODE:	1500	CODE:
1010	RETVAL = max_outstanding;	1501	RETVAL = max_outstanding;
1011	max_outstanding = nreqs;	1502	max_outstanding = maxreqs;
		1503	OUTPUT:
		1504	RETVAL
1012		1505
1013	void	1506	void
1014	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1015	SV * pathname
1016	int flags
1017	int mode
1018	SV * callback
1019	PROTOTYPE: $$$;$	1508	PROTOTYPE: $$$;$
1020	PPCODE:	1509	PPCODE:
1021	{	1510	{
1022	dREQ;	1511	dREQ;
1023		1512
1024	req->type = REQ_OPEN;	1513	req->type = REQ_OPEN;
1025	req->data = newSVsv (pathname);	1514	req->sv1 = newSVsv (pathname);
1026	req->dataptr = SvPVbyte_nolen (req->data);	1515	req->ptr1 = SvPVbyte_nolen (req->sv1);
1027	req->fd = flags;	1516	req->int1 = flags;
1028	req->mode = mode;	1517	req->mode = mode;
1029		1518
1030	REQ_SEND;	1519	REQ_SEND;
1031	}	1520	}
1032		1521
1033	void	1522	void
1034	aio_close (fh,callback=&PL_sv_undef)	1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1035	SV * fh
1036	SV * callback
1037	PROTOTYPE: $;$	1524	PROTOTYPE: $;$
1038	ALIAS:	1525	ALIAS:
1039	aio_close = REQ_CLOSE
1040	aio_fsync = REQ_FSYNC	1526	aio_fsync = REQ_FSYNC
1041	aio_fdatasync = REQ_FDATASYNC	1527	aio_fdatasync = REQ_FDATASYNC
1042	PPCODE:	1528	PPCODE:
1043	{	1529	{
1044	dREQ;	1530	dREQ;
1045		1531
1046	req->type = ix;	1532	req->type = ix;
1047	req->fh = newSVsv (fh);	1533	req->sv1 = newSVsv (fh);
1048	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1049		1535
1050	REQ_SEND (req);	1536	REQ_SEND (req);
1051	}	1537	}
1052		1538
		1539	int
		1540	_dup (int fd)
		1541	PROTOTYPE: $
		1542	CODE:
		1543	RETVAL = dup (fd);
		1544	OUTPUT:
		1545	RETVAL
		1546
1053	void	1547	void
		1548	_aio_close (int fd, SV *callback=&PL_sv_undef)
		1549	PROTOTYPE: $;$
		1550	PPCODE:
		1551	{
		1552	dREQ;
		1553
		1554	req->type = REQ_CLOSE;
		1555	req->int1 = fd;
		1556
		1557	REQ_SEND (req);
		1558	}
		1559
		1560	void
1054	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1055	SV * fh
1056	UV offset
1057	UV length
1058	SV * data
1059	UV dataoffset
1060	SV * callback
1061	ALIAS:	1562	ALIAS:
1062	aio_read = REQ_READ	1563	aio_read = REQ_READ
1063	aio_write = REQ_WRITE	1564	aio_write = REQ_WRITE
1064	PROTOTYPE: $$$$$;$	1565	PROTOTYPE: $$$$$;$
1065	PPCODE:	1566	PPCODE:
1066	{	1567	{
1067	aio_req req;
1068	STRLEN svlen;	1568	STRLEN svlen;
1069	char *svptr = SvPVbyte (data, svlen);	1569	char *svptr = SvPVbyte (data, svlen);
		1570	UV len = SvUV (length);
1070		1571
1071	SvUPGRADE (data, SVt_PV);	1572	SvUPGRADE (data, SVt_PV);
1072	SvPOK_on (data);	1573	SvPOK_on (data);
1073		1574
1074	if (dataoffset < 0)	1575	if (dataoffset < 0)
1075	dataoffset += svlen;	1576	dataoffset += svlen;
1076		1577
1077	if (dataoffset < 0 || dataoffset > svlen)	1578	if (dataoffset < 0 || dataoffset > svlen)
1078	croak ("data offset outside of string");	1579	croak ("dataoffset outside of data scalar");
1079		1580
1080	if (ix == REQ_WRITE)	1581	if (ix == REQ_WRITE)
1081	{	1582	{
1082	/* write: check length and adjust. */	1583	/* write: check length and adjust. */
1083	if (length < 0 || length + dataoffset > svlen)	1584	if (!SvOK (length) || len + dataoffset > svlen)
1084	length = svlen - dataoffset;	1585	len = svlen - dataoffset;
1085	}	1586	}
1086	else	1587	else
1087	{	1588	{
1088	/* read: grow scalar as necessary */	1589	/* read: grow scalar as necessary */
1089	svptr = SvGROW (data, length + dataoffset);	1590	svptr = SvGROW (data, len + dataoffset + 1);
1090	}	1591	}
1091		1592
1092	if (length < 0)	1593	if (len < 0)
1093	croak ("length must not be negative");	1594	croak ("length must not be negative");
1094		1595
1095	{	1596	{
1096	dREQ;	1597	dREQ;
1097		1598
1098	req->type = ix;	1599	req->type = ix;
1099	req->fh = newSVsv (fh);	1600	req->sv1 = newSVsv (fh);
1100	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1101	: IoOFP (sv_2io (fh)));	1602	: IoOFP (sv_2io (fh)));
		1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1102	req->offset = offset;	1604	req->size = len;
1103	req->length = length;
1104	req->data = SvREFCNT_inc (data);	1605	req->sv2 = SvREFCNT_inc (data);
1105	req->dataptr = (char *)svptr + dataoffset;	1606	req->ptr1 = (char *)svptr + dataoffset;
		1607	req->stroffset = dataoffset;
1106		1608
1107	if (!SvREADONLY (data))	1609	if (!SvREADONLY (data))
1108	{	1610	{
1109	SvREADONLY_on (data);	1611	SvREADONLY_on (data);
1110	req->data2ptr = (void *)data;	1612	req->flags |= FLAG_SV2_RO_OFF;
1111	}	1613	}
1112		1614
1113	REQ_SEND;	1615	REQ_SEND;
1114	}	1616	}
1115	}	1617	}
1116		1618
1117	void	1619	void
		1620	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1621	PROTOTYPE: $$;$
		1622	PPCODE:
		1623	{
		1624	SV *data;
		1625	dREQ;
		1626
		1627	data = newSV (NAME_MAX);
		1628	SvPOK_on (data);
		1629
		1630	req->type = REQ_READLINK;
		1631	req->sv1 = newSVsv (path);
		1632	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1633	req->sv2 = data;
		1634	req->ptr1 = SvPVbyte_nolen (data);
		1635
		1636	REQ_SEND;
		1637	}
		1638
		1639	void
1118	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1119	SV * out_fh
1120	SV * in_fh
1121	UV in_offset
1122	UV length
1123	SV * callback
1124	PROTOTYPE: $$$$;$	1641	PROTOTYPE: $$$$;$
1125	PPCODE:	1642	PPCODE:
1126	{	1643	{
1127	dREQ;	1644	dREQ;
1128		1645
1129	req->type = REQ_SENDFILE;	1646	req->type = REQ_SENDFILE;
1130	req->fh = newSVsv (out_fh);	1647	req->sv1 = newSVsv (out_fh);
1131	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1132	req->fh2 = newSVsv (in_fh);	1649	req->sv2 = newSVsv (in_fh);
1133	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1134	req->offset = in_offset;	1651	req->offs = SvVAL64 (in_offset);
1135	req->length = length;	1652	req->size = length;
1136		1653
1137	REQ_SEND;	1654	REQ_SEND;
1138	}	1655	}
1139		1656
1140	void	1657	void
1141	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	UV offset
1144	IV length
1145	SV * callback
1146	PROTOTYPE: $$$;$	1659	PROTOTYPE: $$$;$
1147	PPCODE:	1660	PPCODE:
1148	{	1661	{
1149	dREQ;	1662	dREQ;
1150		1663
1151	req->type = REQ_READAHEAD;	1664	req->type = REQ_READAHEAD;
1152	req->fh = newSVsv (fh);	1665	req->sv1 = newSVsv (fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1154	req->offset = offset;	1667	req->offs = SvVAL64 (offset);
1155	req->length = length;	1668	req->size = length;
1156		1669
1157	REQ_SEND;	1670	REQ_SEND;
1158	}	1671	}
1159		1672
1160	void	1673	void
1161	aio_stat (fh_or_path,callback=&PL_sv_undef)	1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1162	SV * fh_or_path
1163	SV * callback
1164	ALIAS:	1675	ALIAS:
1165	aio_stat = REQ_STAT	1676	aio_stat = REQ_STAT
1166	aio_lstat = REQ_LSTAT	1677	aio_lstat = REQ_LSTAT
1167	PPCODE:	1678	PPCODE:
1168	{	1679	{
1169	dREQ;	1680	dREQ;
1170		1681
1171	New (0, req->statdata, 1, Stat_t);	1682	req->ptr2 = malloc (sizeof (Stat_t));
1172	if (!req->statdata)	1683	if (!req->ptr2)
1173	{	1684	{
1174	req_free (req);	1685	req_destroy (req);
1175	croak ("out of memory during aio_req->statdata allocation");	1686	croak ("out of memory during aio_stat statdata allocation");
1176	}	1687	}
		1688
		1689	req->flags |= FLAG_PTR2_FREE;
		1690	req->sv1 = newSVsv (fh_or_path);
1177		1691
1178	if (SvPOK (fh_or_path))	1692	if (SvPOK (fh_or_path))
1179	{	1693	{
1180	req->type = ix;	1694	req->type = ix;
1181	req->data = newSVsv (fh_or_path);
1182	req->dataptr = SvPVbyte_nolen (req->data);	1695	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	}	1696	}
1184	else	1697	else
1185	{	1698	{
1186	req->type = REQ_FSTAT;	1699	req->type = REQ_FSTAT;
1187	req->fh = newSVsv (fh_or_path);
1188	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189	}	1701	}
1190		1702
1191	REQ_SEND;	1703	REQ_SEND;
1192	}	1704	}
1193		1705
1194	void	1706	void
		1707	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
		1711
		1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1714	req->sv1 = newSVsv (fh_or_path);
		1715
		1716	if (SvPOK (fh_or_path))
		1717	{
		1718	req->type = REQ_UTIME;
		1719	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1720	}
		1721	else
		1722	{
		1723	req->type = REQ_FUTIME;
		1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1725	}
		1726
		1727	REQ_SEND;
		1728	}
		1729
		1730	void
		1731	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1732	PPCODE:
		1733	{
		1734	dREQ;
		1735
		1736	req->sv1 = newSVsv (fh_or_path);
		1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1738
		1739	if (SvPOK (fh_or_path))
		1740	{
		1741	req->type = REQ_TRUNCATE;
		1742	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1743	}
		1744	else
		1745	{
		1746	req->type = REQ_FTRUNCATE;
		1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1748	}
		1749
		1750	REQ_SEND;
		1751	}
		1752
		1753	void
		1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1755	PPCODE:
		1756	{
		1757	dREQ;
		1758
		1759	req->mode = mode;
		1760	req->sv1 = newSVsv (fh_or_path);
		1761
		1762	if (SvPOK (fh_or_path))
		1763	{
		1764	req->type = REQ_CHMOD;
		1765	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1766	}
		1767	else
		1768	{
		1769	req->type = REQ_FCHMOD;
		1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1771	}
		1772
		1773	REQ_SEND;
		1774	}
		1775
		1776	void
		1777	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1778	PPCODE:
		1779	{
		1780	dREQ;
		1781
		1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1784	req->sv1 = newSVsv (fh_or_path);
		1785
		1786	if (SvPOK (fh_or_path))
		1787	{
		1788	req->type = REQ_CHOWN;
		1789	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1790	}
		1791	else
		1792	{
		1793	req->type = REQ_FCHOWN;
		1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1795	}
		1796
		1797	REQ_SEND;
		1798	}
		1799
		1800	void
1195	aio_unlink (pathname,callback=&PL_sv_undef)	1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1196	SV * pathname
1197	SV * callback
1198	ALIAS:	1802	ALIAS:
1199	aio_unlink = REQ_UNLINK	1803	aio_unlink = REQ_UNLINK
1200	aio_rmdir = REQ_RMDIR	1804	aio_rmdir = REQ_RMDIR
1201	aio_readdir = REQ_READDIR	1805	aio_readdir = REQ_READDIR
1202	PPCODE:	1806	PPCODE:
1203	{	1807	{
1204	dREQ;	1808	dREQ;
1205		1809
1206	req->type = ix;	1810	req->type = ix;
1207	req->data = newSVsv (pathname);	1811	req->sv1 = newSVsv (pathname);
1208	req->dataptr = SvPVbyte_nolen (req->data);	1812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1813
		1814	REQ_SEND;
		1815	}
		1816
		1817	void
		1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1819	PPCODE:
		1820	{
		1821	dREQ;
1209		1822
		1823	req->type = REQ_MKDIR;
		1824	req->sv1 = newSVsv (pathname);
		1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1826	req->mode = mode;
		1827
1210	REQ_SEND;	1828	REQ_SEND;
1211	}	1829	}
1212		1830
1213	void	1831	void
1214	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1215	SV * oldpath
1216	SV * newpath
1217	SV * callback
1218	ALIAS:	1833	ALIAS:
1219	aio_link = REQ_LINK	1834	aio_link = REQ_LINK
1220	aio_symlink = REQ_SYMLINK	1835	aio_symlink = REQ_SYMLINK
1221	aio_rename = REQ_RENAME	1836	aio_rename = REQ_RENAME
1222	PPCODE:	1837	PPCODE:
1223	{	1838	{
1224	dREQ;	1839	dREQ;
1225		1840
1226	req->type = ix;	1841	req->type = ix;
1227	req->fh = newSVsv (oldpath);	1842	req->sv2 = newSVsv (oldpath);
1228	req->data2ptr = SvPVbyte_nolen (req->fh);	1843	req->ptr2 = SvPVbyte_nolen (req->sv2);
1229	req->data = newSVsv (newpath);	1844	req->sv1 = newSVsv (newpath);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1846
1232	REQ_SEND;	1847	REQ_SEND;
1233	}	1848	}
1234		1849
1235	void	1850	void
1236	aio_sleep (delay,callback=&PL_sv_undef)	1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1237	double delay
1238	SV * callback
1239	PPCODE:	1852	PPCODE:
1240	{	1853	{
1241	dREQ;	1854	dREQ;
1242		1855
1243	req->type = REQ_SLEEP;	1856	req->type = REQ_MKNOD;
1244	req->fd = delay < 0. ? 0 : delay;	1857	req->sv1 = newSVsv (pathname);
1245	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1858	req->ptr1 = SvPVbyte_nolen (req->sv1);
1246		1859	req->mode = (mode_t)mode;
		1860	req->offs = dev;
		1861
1247	REQ_SEND;	1862	REQ_SEND;
1248	}	1863	}
1249		1864
1250	void	1865	void
		1866	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1867	PPCODE:
		1868	{
		1869	dREQ;
		1870
		1871	req->type = REQ_BUSY;
		1872	req->nv1 = delay < 0. ? 0. : delay;
		1873
		1874	REQ_SEND;
		1875	}
		1876
		1877	void
1251	aio_group (callback=&PL_sv_undef)	1878	aio_group (SV *callback=&PL_sv_undef)
1252	SV * callback
1253	PROTOTYPE: ;$	1879	PROTOTYPE: ;$
1254	PPCODE:	1880	PPCODE:
1255	{	1881	{
1256	dREQ;	1882	dREQ;
1257		1883
1258	req->type = REQ_GROUP;	1884	req->type = REQ_GROUP;
		1885
1259	req_send (req);	1886	req_send (req);
1260
1261	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262	}	1888	}
1263		1889
1264	void	1890	void
1265	aio_nop (callback=&PL_sv_undef)	1891	aio_nop (SV *callback=&PL_sv_undef)
1266	SV * callback
1267	PPCODE:	1892	PPCODE:
1268	{	1893	{
1269	dREQ;	1894	dREQ;
1270		1895
1271	req->type = REQ_NOP;	1896	req->type = REQ_NOP;
1272		1897
1273	REQ_SEND;	1898	REQ_SEND;
1274	}	1899	}
1275		1900
1276	#if 0	1901	int
1277		1902	aioreq_pri (int pri = 0)
1278	void	1903	PROTOTYPE: ;$
1279	aio_pri (int pri = DEFAULT_PRI)
1280	CODE:	1904	CODE:
		1905	RETVAL = next_pri - PRI_BIAS;
		1906	if (items > 0)
		1907	{
1281	if (pri < PRI_MIN) pri = PRI_MIN;	1908	if (pri < PRI_MIN) pri = PRI_MIN;
1282	if (pri > PRI_MAX) pri = PRI_MAX;	1909	if (pri > PRI_MAX) pri = PRI_MAX;
1283	next_pri = pri + PRI_BIAS;	1910	next_pri = pri + PRI_BIAS;
		1911	}
		1912	OUTPUT:
		1913	RETVAL
1284		1914
1285	#endif	1915	void
		1916	aioreq_nice (int nice = 0)
		1917	CODE:
		1918	nice = next_pri - nice;
		1919	if (nice < PRI_MIN) nice = PRI_MIN;
		1920	if (nice > PRI_MAX) nice = PRI_MAX;
		1921	next_pri = nice + PRI_BIAS;
1286		1922
1287	void	1923	void
1288	flush ()	1924	flush ()
1289	PROTOTYPE:	1925	PROTOTYPE:
1290	CODE:	1926	CODE:
…		…
1292	{	1928	{
1293	poll_wait ();	1929	poll_wait ();
1294	poll_cb ();	1930	poll_cb ();
1295	}	1931	}
1296		1932
1297	void	1933	int
1298	poll()	1934	poll()
1299	PROTOTYPE:	1935	PROTOTYPE:
1300	CODE:	1936	CODE:
1301	if (nreqs)
1302	{
1303	poll_wait ();	1937	poll_wait ();
1304	poll_cb ();	1938	RETVAL = poll_cb ();
1305	}	1939	OUTPUT:
		1940	RETVAL
1306		1941
1307	int	1942	int
1308	poll_fileno()	1943	poll_fileno()
1309	PROTOTYPE:	1944	PROTOTYPE:
1310	CODE:	1945	CODE:
…		…
1322		1957
1323	void	1958	void
1324	poll_wait()	1959	poll_wait()
1325	PROTOTYPE:	1960	PROTOTYPE:
1326	CODE:	1961	CODE:
1327	if (nreqs)
1328	poll_wait ();	1962	poll_wait ();
		1963
		1964	void
		1965	setsig (int signum = SIGIO)
		1966	PROTOTYPE: ;$
		1967	CODE:
		1968	{
		1969	if (block_sig_level)
		1970	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1971
		1972	X_LOCK (reslock);
		1973	main_tid = pthread_self ();
		1974	main_sig = signum;
		1975	X_UNLOCK (reslock);
		1976
		1977	if (main_sig && npending)
		1978	pthread_kill (main_tid, main_sig);
		1979	}
		1980
		1981	void
		1982	aio_block (SV *cb)
		1983	PROTOTYPE: &
		1984	PPCODE:
		1985	{
		1986	int count;
		1987
		1988	block_sig ();
		1989	PUSHMARK (SP);
		1990	PUTBACK;
		1991	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1992	SPAGAIN;
		1993	unblock_sig ();
		1994
		1995	if (SvTRUE (ERRSV))
		1996	croak (0);
		1997
		1998	XSRETURN (count);
		1999	}
1329		2000
1330	int	2001	int
1331	nreqs()	2002	nreqs()
1332	PROTOTYPE:	2003	PROTOTYPE:
1333	CODE:	2004	CODE:
1334	RETVAL = nreqs;	2005	RETVAL = nreqs;
1335	OUTPUT:	2006	OUTPUT:
1336	RETVAL	2007	RETVAL
1337		2008
		2009	int
		2010	nready()
		2011	PROTOTYPE:
		2012	CODE:
		2013	RETVAL = get_nready ();
		2014	OUTPUT:
		2015	RETVAL
		2016
		2017	int
		2018	npending()
		2019	PROTOTYPE:
		2020	CODE:
		2021	RETVAL = get_npending ();
		2022	OUTPUT:
		2023	RETVAL
		2024
		2025	int
		2026	nthreads()
		2027	PROTOTYPE:
		2028	CODE:
		2029	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2030	RETVAL = started;
		2031	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2032	OUTPUT:
		2033	RETVAL
		2034
1338	PROTOTYPES: DISABLE	2035	PROTOTYPES: DISABLE
1339		2036
1340	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2037	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341		2038
1342	void	2039	void
1343	cancel (aio_req_ornot req)	2040	cancel (aio_req_ornot req)
1344	PROTOTYPE:
1345	CODE:	2041	CODE:
1346	req_cancel (req);	2042	req_cancel (req);
1347		2043
1348	void	2044	void
1349	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2045	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1358	PPCODE:	2054	PPCODE:
1359	{	2055	{
1360	int i;	2056	int i;
1361	aio_req req;	2057	aio_req req;
1362		2058
		2059	if (main_sig && !block_sig_level)
		2060	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2061
1363	if (grp->fd == 2)	2062	if (grp->int1 == 2)
1364	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2063	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365		2064
1366	for (i = 1; i < items; ++i )	2065	for (i = 1; i < items; ++i )
1367	{	2066	{
1368	if (GIMME_V != G_VOID)	2067	if (GIMME_V != G_VOID)
…		…
1370		2069
1371	req = SvAIO_REQ (ST (i));	2070	req = SvAIO_REQ (ST (i));
1372		2071
1373	if (req)	2072	if (req)
1374	{	2073	{
1375	++grp->length;	2074	++grp->size;
1376	req->grp = grp;	2075	req->grp = grp;
1377		2076
1378	req->grp_prev = 0;	2077	req->grp_prev = 0;
1379	req->grp_next = grp->grp_first;	2078	req->grp_next = grp->grp_first;
1380		2079
…		…
1385	}	2084	}
1386	}	2085	}
1387	}	2086	}
1388		2087
1389	void	2088	void
		2089	cancel_subs (aio_req_ornot req)
		2090	CODE:
		2091	req_cancel_subs (req);
		2092
		2093	void
1390	result (aio_req grp, ...)	2094	result (aio_req grp, ...)
1391	CODE:	2095	CODE:
1392	{	2096	{
1393	int i;	2097	int i;
		2098	AV *av;
		2099
		2100	grp->errorno = errno;
		2101
1394	AV *av = newAV ();	2102	av = newAV ();
1395		2103
1396	for (i = 1; i < items; ++i )	2104	for (i = 1; i < items; ++i )
1397	av_push (av, newSVsv (ST (i)));	2105	av_push (av, newSVsv (ST (i)));
1398		2106
1399	SvREFCNT_dec (grp->data);	2107	SvREFCNT_dec (grp->sv1);
1400	grp->data = (SV *)av;	2108	grp->sv1 = (SV *)av;
1401	}	2109	}
1402		2110
1403	void	2111	void
		2112	errno (aio_req grp, int errorno = errno)
		2113	CODE:
		2114	grp->errorno = errorno;
		2115
		2116	void
1404	feed_limit (aio_req grp, int limit)	2117	limit (aio_req grp, int limit)
1405	CODE:	2118	CODE:
1406	grp->fd2 = limit;	2119	grp->int2 = limit;
1407	aio_grp_feed (grp);	2120	aio_grp_feed (grp);
1408		2121
1409	void	2122	void
1410	feed (aio_req grp, SV *callback=&PL_sv_undef)	2123	feed (aio_req grp, SV *callback=&PL_sv_undef)
1411	CODE:	2124	CODE:
1412	{	2125	{
1413	SvREFCNT_dec (grp->fh2);	2126	SvREFCNT_dec (grp->sv2);
1414	grp->fh2 = newSVsv (callback);	2127	grp->sv2 = newSVsv (callback);
1415		2128
1416	if (grp->fd2 <= 0)	2129	if (grp->int2 <= 0)
1417	grp->fd2 = 2;	2130	grp->int2 = 2;
1418		2131
1419	aio_grp_feed (grp);	2132	aio_grp_feed (grp);
1420	}	2133	}
1421		2134

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