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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 1.114 by root, Sat Apr 26 12:00:23 2008 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_SYNC, 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 (void)
		195	{
		196	sigset_t ss;
		197
		198	if (block_sig_level++)
		199	return;
		200
		201	if (!main_sig)
		202	return;
		203
		204	sigemptyset (&ss);
		205	sigaddset (&ss, main_sig);
		206	pthread_sigmask (SIG_BLOCK, &ss, 0);
		207	}
		208
		209	void unblock_sig (void)
		210	{
		211	sigset_t ss;
		212
		213	if (--block_sig_level)
		214	return;
		215
		216	if (!main_sig)
		217	return;
		218
		219	sigemptyset (&ss);
		220	sigaddset (&ss, main_sig);
		221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		222	}
		223
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 (void)
		280	{
		281	unsigned int retval;
		282
		283	X_LOCK (reqlock);
		284	retval = nready;
		285	X_UNLOCK (reqlock);
		286
		287	return retval;
		288	}
		289
		290	static unsigned int get_npending (void)
		291	{
		292	unsigned int retval;
		293
		294	X_LOCK (reslock);
		295	retval = npending;
		296	X_UNLOCK (reslock);
		297
		298	return retval;
		299	}
		300
		301	static unsigned int get_nthreads (void)
		302	{
		303	unsigned int retval;
		304
		305	X_LOCK (wrklock);
		306	retval = started;
		307	X_UNLOCK (wrklock);
		308
		309	return retval;
		310	}
		311
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 (void);
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 = (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;
223	}	593	}
224	}
225		594
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)	595	if (req->grp)
328	{	596	{
329	aio_req grp = req->grp;	597	aio_req grp = req->grp;
330		598
331	/* unlink request */	599	/* unlink request */
…		…
336	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
337		605
338	aio_grp_dec (grp);	606	aio_grp_dec (grp);
339	}	607	}
340		608
		609	return !SvTRUE (ERRSV);
		610	}
		611
		612	static void req_destroy (aio_req req)
		613	{
341	if (req->self)	614	if (req->self)
342	{	615	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
345	}	618	}
346		619
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352		623
353	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
354	free (req->data2ptr);	625	free (req->ptr2);
355		626
356	Safefree (req);	627	Safefree (req);
357	}	628	}
358		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
359	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
360	{	645	{
361	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
362		647
363	if (req->type == REQ_GROUP)	648	req_cancel_subs (req);
		649	}
		650
		651	#ifdef USE_SOCKETS_AS_HANDLES
		652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		653	#else
		654	# define TO_SOCKET(x) (x)
		655	#endif
		656
		657	static void
		658	create_respipe (void)
		659	{
		660	int old_readfd = respipe [0];
		661
		662	if (respipe [1] >= 0)
		663	respipe_close (TO_SOCKET (respipe [1]));
		664
		665	#ifdef _WIN32
		666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		667	#else
		668	if (pipe (respipe))
		669	#endif
		670	croak ("unable to initialize result pipe");
		671
		672	if (old_readfd >= 0)
364	{	673	{
365	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
366		676
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	677	respipe_close (respipe [0]);
368	req_cancel (sub);	678	respipe [0] = old_readfd;
369	}	679	}
370	}
371		680
		681	#ifdef _WIN32
		682	int arg = 1;
		683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		685	#else
		686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		688	#endif
		689	croak ("unable to initialize result pipe(3)");
		690
		691	respipe_osf [0] = TO_SOCKET (respipe [0]);
		692	respipe_osf [1] = TO_SOCKET (respipe [1]);
		693	}
		694
		695	X_THREAD_PROC (aio_proc);
		696
		697	static void start_thread (void)
		698	{
		699	worker *wrk = calloc (1, sizeof (worker));
		700
		701	if (!wrk)
		702	croak ("unable to allocate worker thread data");
		703
		704	X_LOCK (wrklock);
		705
		706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		707	{
		708	wrk->prev = &wrk_first;
		709	wrk->next = wrk_first.next;
		710	wrk_first.next->prev = wrk;
		711	wrk_first.next = wrk;
		712	++started;
		713	}
		714	else
		715	free (wrk);
		716
		717	X_UNLOCK (wrklock);
		718	}
		719
		720	static void maybe_start_thread (void)
		721	{
		722	if (get_nthreads () >= wanted)
		723	return;
		724
		725	/* todo: maybe use idle here, but might be less exact */
		726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		727	return;
		728
		729	start_thread ();
		730	}
		731
		732	static void req_send (aio_req req)
		733	{
		734	block_sig ();
		735
		736	++nreqs;
		737
		738	X_LOCK (reqlock);
		739	++nready;
		740	reqq_push (&req_queue, req);
		741	X_COND_SIGNAL (reqwait);
		742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
		745
		746	maybe_start_thread ();
		747	}
		748
		749	static void end_thread (void)
		750	{
		751	aio_req req;
		752
		753	Newz (0, req, 1, aio_cb);
		754
		755	req->type = REQ_QUIT;
		756	req->pri = PRI_MAX + PRI_BIAS;
		757
		758	X_LOCK (reqlock);
		759	reqq_push (&req_queue, req);
		760	X_COND_SIGNAL (reqwait);
		761	X_UNLOCK (reqlock);
		762
		763	X_LOCK (wrklock);
		764	--started;
		765	X_UNLOCK (wrklock);
		766	}
		767
		768	static void set_max_idle (int nthreads)
		769	{
		770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		771	max_idle = nthreads <= 0 ? 1 : nthreads;
		772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		773	}
		774
		775	static void min_parallel (int nthreads)
		776	{
		777	if (wanted < nthreads)
		778	wanted = nthreads;
		779	}
		780
		781	static void max_parallel (int nthreads)
		782	{
		783	if (wanted > nthreads)
		784	wanted = nthreads;
		785
		786	while (started > wanted)
		787	end_thread ();
		788	}
		789
		790	static void poll_wait (void)
		791	{
		792	fd_set rfd;
		793
		794	while (nreqs)
		795	{
		796	int size;
		797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		798	size = res_queue.size;
		799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		800
		801	if (size)
		802	return;
		803
		804	maybe_start_thread ();
		805
		806	FD_ZERO (&rfd);
		807	FD_SET (respipe [0], &rfd);
		808
		809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		810	}
		811	}
		812
372	static int poll_cb ()	813	static int poll_cb (void)
373	{	814	{
374	dSP;	815	dSP;
375	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
376	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
377	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
378		826
379	for (;;)	827	for (;;)
380	{	828	{
381	pthread_mutex_lock (&reslock);	829	for (;;)
382	req = ress;
383
384	if (req)
385	{	830	{
386	ress = req->next;	831	maybe_start_thread ();
387		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
388	if (!ress)	836	if (req)
389	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
390	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
391	char buf [32];	843	char buf [4];
392	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
393	;	846	}
		847	}
394		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)
395	rese = 0;	883	break;
396	}	884	}
397	}	885	}
398		886
399	pthread_mutex_unlock (&reslock);	887	if (nreqs <= max_outstanding)
400
401	if (!req)
402	break;	888	break;
403		889
404	--nreqs;	890	poll_wait ();
405		891
406	if (req->type == REQ_QUIT)	892	++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	}	893	}
435		894
		895	unblock_sig ();
436	return count;	896	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	}	897	}
540		898
541	/*****************************************************************************/	899	/*****************************************************************************/
542	/* work around various missing functions */	900	/* work around various missing functions */
543		901
…		…
548	/*	906	/*
549	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
550	* 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,
551	* but that's your problem, not mine.	909	* but that's your problem, not mine.
552	*/	910	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
554		912
555	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)
556	{	914	{
557	ssize_t res;	915	ssize_t res;
558	off_t ooffset;	916	off_t ooffset;
559		917
560	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);	921	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
566		924
567	return res;	925	return res;
568	}	926	}
569		927
570	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)
571	{	929	{
572	ssize_t res;	930	ssize_t res;
573	off_t ooffset;	931	off_t ooffset;
574		932
575	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);	936	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
581		939
582	return res;	940	return res;
583	}	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
584	#endif	970	#endif
585		971
586	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
587	# define fdatasync fsync	973	# define fdatasync fsync
588	#endif	974	#endif
589		975
590	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
591	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
592		978
593	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)
594	{	980	{
595	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
596		983
597	while (count > 0)	984	while (todo > 0)
598	{	985	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
600		987
601	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
602	offset += len;	989	offset += len;
603	count -= len;	990	todo -= len;
604	}	991	}
605		992
606	errno = 0;	993	errno = 0;
		994	return count;
607	}	995	}
		996
608	#endif	997	#endif
609		998
610	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
612		1001
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
614		1003
615	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)
616	{	1005	{
617	struct dirent *e;	1006	X_DIRENT *e;
618	int errorno;	1007	int errorno;
619		1008
620	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
621		1010
622	e = readdir (dirp);	1011	e = readdir (dirp);
623	errorno = errno;	1012	errorno = errno;
624		1013
625	if (e)	1014	if (e)
…		…
628	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
629	}	1018	}
630	else	1019	else
631	*res = 0;	1020	*res = 0;
632		1021
633	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
634		1023
635	errno = errorno;	1024	errno = errorno;
636	return e ? 0 : -1;	1025	return e ? 0 : -1;
637	}	1026	}
638	#endif	1027	#endif
639		1028
640	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
641	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)
642	{	1031	{
643	ssize_t res;	1032	ssize_t res;
644		1033
645	if (!count)	1034	if (!count)
646	return 0;	1035	return 0;
…		…
657	{	1046	{
658	off_t sbytes;	1047	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		1049
661	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
663	res = sbytes;	1052	res = sbytes;
664	}	1053	}
665		1054
666	# elif __hpux	1055	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
695	#endif	1084	#endif
696	)	1085	)
697	)	1086	)
698	{	1087	{
699	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];	1089	dBUF;
		1090
701	res = 0;	1091	res = 0;
702		1092
703	while (count)	1093	while (count)
704	{	1094	{
705	ssize_t cnt;	1095	ssize_t cnt;
706		1096
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
708		1098
709	if (cnt <= 0)	1099	if (cnt <= 0)
710	{	1100	{
711	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
712	break;	1102	break;
713	}	1103	}
714		1104
715	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
716		1106
717	if (cnt <= 0)	1107	if (cnt <= 0)
718	{	1108	{
719	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
720	break;	1110	break;
…		…
728		1118
729	return res;	1119	return res;
730	}	1120	}
731		1121
732	/* read a full directory */	1122	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)	1123	static void scandir_ (aio_req req, worker *self)
734	{	1124	{
735	DIR *dirp = opendir (path);	1125	DIR *dirp;
736	union	1126	union
737	{	1127	{
738	struct dirent d;	1128	X_DIRENT d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
740	} u;	1130	} *u;
741	struct dirent *entp;	1131	X_DIRENT *entp;
742	char *name, *names;	1132	char *name, *names;
743	int memlen = 4096;	1133	int memlen = 4096;
744	int memofs = 0;	1134	int memofs = 0;
745	int res = 0;	1135	int res = 0;
746	int errorno;
747		1136
748	if (!dirp)	1137	X_LOCK (wrklock);
		1138	self->dirp = dirp = opendir (req->ptr1);
		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
		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	static int
		1184	aio_close (int fd)
		1185	{
		1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1187
		1188	X_LOCK (wrklock);
		1189
		1190	if (close_pipe < 0)
		1191	{
		1192	int pipefd [2];
		1193
		1194	if (pipe (pipefd) < 0
		1195	|| close (pipefd [1]) < 0
		1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1197	{
		1198	X_UNLOCK (wrklock);
749	return -1;	1199	return -1;
		1200	}
750		1201
751	names = malloc (memlen);	1202	close_pipe = pipefd [0];
		1203	}
		1204
		1205	X_UNLOCK (wrklock);
		1206
		1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
		1208	}
		1209
		1210	/*****************************************************************************/
		1211
		1212	X_THREAD_PROC (aio_proc)
		1213	{
		1214	aio_req req;
		1215	struct timespec ts;
		1216	worker *self = (worker *)thr_arg;
		1217
		1218	/* try to distribute timeouts somewhat randomly */
		1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
752		1220
753	for (;;)	1221	for (;;)
754	{	1222	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);	1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
756		1224
757	if (!entp)	1225	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		1226
806	for (;;)	1227	for (;;)
807	{	1228	{
808	req = reqs;	1229	self->req = req = reqq_shift (&req_queue);
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815		1230
816	if (req)	1231	if (req)
817	break;	1232	break;
818		1233
819	pthread_cond_wait (&reqwait, &reqlock);	1234	++idle;
		1235
		1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1237	== ETIMEDOUT)
		1238	{
		1239	if (idle > max_idle)
		1240	{
		1241	--idle;
		1242	X_UNLOCK (reqlock);
		1243	X_LOCK (wrklock);
		1244	--started;
		1245	X_UNLOCK (wrklock);
		1246	goto quit;
		1247	}
		1248
		1249	/* we are allowed to idle, so do so without any timeout */
		1250	X_COND_WAIT (reqwait, reqlock);
		1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1252	}
		1253
		1254	--idle;
820	}	1255	}
821		1256
822	pthread_mutex_unlock (&reqlock);	1257	--nready;
		1258
		1259	X_UNLOCK (reqlock);
823		1260
824	errno = 0; /* strictly unnecessary */	1261	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826		1262
827	if (!(req->flags & FLAG_CANCELLED))	1263	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)	1264	switch (req->type)
829	{	1265	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1266	case REQ_READ: req->result = req->offs >= 0
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1267	? pread (req->int1, req->ptr1, req->size, req->offs)
		1268	: read (req->int1, req->ptr1, req->size); break;
		1269	case REQ_WRITE: req->result = req->offs >= 0
		1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1271	: write (req->int1, req->ptr1, req->size); break;
832		1272
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1273	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;	1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
835		1275
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1276	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;	1277	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;	1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
839		1279
		1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1286
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;	1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
847		1297
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1298	case REQ_SYNC: req->result = 0; sync (); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;	1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
851		1301
		1302	case REQ_READDIR: scandir_ (req, self); break;
		1303
852	case REQ_SLEEP:	1304	case REQ_BUSY:
		1305	#ifdef _WIN32
		1306	Sleep (req->nv1 * 1000.);
		1307	#else
853	{	1308	{
854	struct timeval tv;	1309	struct timeval tv;
855		1310
856	tv.tv_sec = req->fd;	1311	tv.tv_sec = req->nv1;
857	tv.tv_usec = req->fd2;	1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
858		1313
859	req->result = select (0, 0, 0, 0, &tv);	1314	req->result = select (0, 0, 0, 0, &tv);
860	}	1315	}
		1316	#endif
		1317	break;
		1318
		1319	case REQ_UTIME:
		1320	case REQ_FUTIME:
		1321	{
		1322	struct timeval tv[2];
		1323	struct timeval *times;
		1324
		1325	if (req->nv1 != -1. || req->nv2 != -1.)
		1326	{
		1327	tv[0].tv_sec = req->nv1;
		1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1329	tv[1].tv_sec = req->nv2;
		1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1331
		1332	times = tv;
		1333	}
		1334	else
		1335	times = 0;
		1336
		1337
		1338	req->result = req->type == REQ_FUTIME
		1339	? futimes (req->int1, times)
		1340	: utimes (req->ptr1, times);
		1341	}
861		1342
862	case REQ_GROUP:	1343	case REQ_GROUP:
863	case REQ_NOP:	1344	case REQ_NOP:
		1345	break;
		1346
864	case REQ_QUIT:	1347	case REQ_QUIT:
865	break;	1348	goto quit;
866		1349
867	default:	1350	default:
868	req->result = ENOSYS;	1351	req->result = -1;
869	break;	1352	break;
870	}	1353	}
871		1354
872	req->errorno = errno;	1355	req->errorno = errno;
873		1356
874	pthread_mutex_lock (&reslock);	1357	X_LOCK (reslock);
875		1358
876	req->next = 0;	1359	++npending;
877		1360
878	if (rese)	1361	if (!reqq_push (&res_queue, req))
879	{	1362	{
880	rese->next = req;	1363	/* write a dummy byte to the pipe so fh becomes ready */
881	rese = req;	1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1365
		1366	/* optionally signal the main thread asynchronously */
		1367	if (main_sig)
		1368	pthread_kill (main_tid, main_sig);
882	}	1369	}
883	else
884	{
885	rese = ress = req;
886		1370
887	/* write a dummy byte to the pipe so fh becomes ready */	1371	self->req = 0;
888	write (respipe [1], &respipe, 1);	1372	worker_clear (self);
889	}
890		1373
891	pthread_mutex_unlock (&reslock);	1374	X_UNLOCK (reslock);
892	}	1375	}
893	while (type != REQ_QUIT);	1376
		1377	quit:
		1378	X_LOCK (wrklock);
		1379	worker_free (self);
		1380	X_UNLOCK (wrklock);
894		1381
895	return 0;	1382	return 0;
896	}	1383	}
897		1384
898	/*****************************************************************************/	1385	/*****************************************************************************/
899		1386
900	static void atfork_prepare (void)	1387	static void atfork_prepare (void)
901	{	1388	{
902	pthread_mutex_lock (&reqlock);	1389	X_LOCK (wrklock);
903	pthread_mutex_lock (&reslock);	1390	X_LOCK (reqlock);
		1391	X_LOCK (reslock);
904	#if !HAVE_PREADWRITE	1392	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);	1393	X_LOCK (preadwritelock);
906	#endif	1394	#endif
907	#if !HAVE_READDIR_R	1395	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);	1396	X_LOCK (readdirlock);
909	#endif	1397	#endif
910	}	1398	}
911		1399
912	static void atfork_parent (void)	1400	static void atfork_parent (void)
913	{	1401	{
914	#if !HAVE_READDIR_R	1402	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);	1403	X_UNLOCK (readdirlock);
916	#endif	1404	#endif
917	#if !HAVE_PREADWRITE	1405	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);	1406	X_UNLOCK (preadwritelock);
919	#endif	1407	#endif
920	pthread_mutex_unlock (&reslock);	1408	X_UNLOCK (reslock);
921	pthread_mutex_unlock (&reqlock);	1409	X_UNLOCK (reqlock);
		1410	X_UNLOCK (wrklock);
922	}	1411	}
923		1412
924	static void atfork_child (void)	1413	static void atfork_child (void)
925	{	1414	{
926	aio_req prv;	1415	aio_req prv;
927		1416
928	started = 0;	1417	while (prv = reqq_shift (&req_queue))
		1418	req_destroy (prv);
929		1419
930	while (reqs)	1420	while (prv = reqq_shift (&res_queue))
		1421	req_destroy (prv);
		1422
		1423	while (wrk_first.next != &wrk_first)
931	{	1424	{
932	prv = reqs;	1425	worker *wrk = wrk_first.next;
933	reqs = prv->next;	1426
		1427	if (wrk->req)
		1428	req_destroy (wrk->req);
		1429
		1430	worker_clear (wrk);
934	req_free (prv);	1431	worker_free (wrk);
935	}	1432	}
936		1433
937	reqs = reqe = 0;	1434	started = 0;
938		1435	idle = 0;
939	while (ress)	1436	nreqs = 0;
940	{	1437	nready = 0;
941	prv = ress;	1438	npending = 0;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947		1439
948	close (respipe [0]);
949	close (respipe [1]);
950	create_pipe ();	1440	create_respipe ();
951		1441
952	atfork_parent ();	1442	atfork_parent ();
953	}	1443	}
954		1444
955	#define dREQ \	1445	#define dREQ \
…		…
977		1467
978	PROTOTYPES: ENABLE	1468	PROTOTYPES: ENABLE
979		1469
980	BOOT:	1470	BOOT:
981	{	1471	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	1472	stash = gv_stashpv ("IO::AIO", 1);
		1473
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1479	#ifdef _WIN32
		1480	X_MUTEX_CHECK (wrklock);
		1481	X_MUTEX_CHECK (reslock);
		1482	X_MUTEX_CHECK (reqlock);
		1483	X_MUTEX_CHECK (reqwait);
		1484	X_MUTEX_CHECK (preadwritelock);
		1485	X_MUTEX_CHECK (readdirlock);
986		1486
987	create_pipe ();	1487	X_COND_CHECK (reqwait);
		1488	#else
		1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1491	#endif
		1492
		1493	create_respipe ();
		1494
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
989	}	1496	}
990		1497
991	void	1498	void
992	min_parallel (nthreads)	1499	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	1500	PROTOTYPE: $
		1501	CODE:
		1502	max_poll_reqs = nreqs;
995		1503
996	void	1504	void
997	max_parallel (nthreads)	1505	max_poll_time (double nseconds)
998	int nthreads
999	PROTOTYPE: $	1506	PROTOTYPE: $
		1507	CODE:
		1508	max_poll_time = nseconds * AIO_TICKS;
		1509
		1510	void
		1511	min_parallel (int nthreads)
		1512	PROTOTYPE: $
		1513
		1514	void
		1515	max_parallel (int nthreads)
		1516	PROTOTYPE: $
		1517
		1518	void
		1519	max_idle (int nthreads)
		1520	PROTOTYPE: $
		1521	CODE:
		1522	set_max_idle (nthreads);
1000		1523
1001	int	1524	int
1002	max_outstanding (nreqs)	1525	max_outstanding (int maxreqs)
1003	int nreqs	1526	PROTOTYPE: $
1004	PROTOTYPE: $
1005	CODE:	1527	CODE:
1006	RETVAL = max_outstanding;	1528	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;	1529	max_outstanding = maxreqs;
		1530	OUTPUT:
		1531	RETVAL
1008		1532
1009	void	1533	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1534	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: $$$;$	1535	PROTOTYPE: $$$;$
1016	PPCODE:	1536	PPCODE:
1017	{	1537	{
1018	dREQ;	1538	dREQ;
1019		1539
1020	req->type = REQ_OPEN;	1540	req->type = REQ_OPEN;
1021	req->data = newSVsv (pathname);	1541	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1542	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	1543	req->int1 = flags;
1024	req->mode = mode;	1544	req->mode = mode;
1025		1545
1026	REQ_SEND;	1546	REQ_SEND;
1027	}	1547	}
1028		1548
1029	void	1549	void
1030	aio_close (fh,callback=&PL_sv_undef)	1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$	1551	PROTOTYPE: $;$
1034	ALIAS:	1552	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC	1553	aio_fsync = REQ_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC	1554	aio_fdatasync = REQ_FDATASYNC
1038	PPCODE:	1555	PPCODE:
1039	{	1556	{
1040	dREQ;	1557	dREQ;
1041		1558
1042	req->type = ix;	1559	req->type = ix;
1043	req->fh = newSVsv (fh);	1560	req->sv1 = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		1562
1046	REQ_SEND (req);	1563	REQ_SEND (req);
1047	}	1564	}
1048		1565
1049	void	1566	void
		1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1568	PROTOTYPE: $;$
		1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
		1573	req->type = REQ_CLOSE;
		1574	req->sv1 = newSVsv (fh);
		1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		1576
		1577	REQ_SEND (req);
		1578	}
		1579
		1580	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1581	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:	1582	ALIAS:
1058	aio_read = REQ_READ	1583	aio_read = REQ_READ
1059	aio_write = REQ_WRITE	1584	aio_write = REQ_WRITE
1060	PROTOTYPE: $$$$$;$	1585	PROTOTYPE: $$$$$;$
1061	PPCODE:	1586	PPCODE:
1062	{	1587	{
1063	aio_req req;
1064	STRLEN svlen;	1588	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	1589	char *svptr = SvPVbyte (data, svlen);
		1590	UV len = SvUV (length);
1066		1591
1067	SvUPGRADE (data, SVt_PV);	1592	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	1593	SvPOK_on (data);
1069		1594
1070	if (dataoffset < 0)	1595	if (dataoffset < 0)
1071	dataoffset += svlen;	1596	dataoffset += svlen;
1072		1597
1073	if (dataoffset < 0 || dataoffset > svlen)	1598	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	1599	croak ("dataoffset outside of data scalar");
1075		1600
1076	if (ix == REQ_WRITE)	1601	if (ix == REQ_WRITE)
1077	{	1602	{
1078	/* write: check length and adjust. */	1603	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	1604	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	1605	len = svlen - dataoffset;
1081	}	1606	}
1082	else	1607	else
1083	{	1608	{
1084	/* read: grow scalar as necessary */	1609	/* read: grow scalar as necessary */
1085	svptr = SvGROW (data, length + dataoffset);	1610	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	1611	}
1087		1612
1088	if (length < 0)	1613	if (len < 0)
1089	croak ("length must not be negative");	1614	croak ("length must not be negative");
1090		1615
1091	{	1616	{
1092	dREQ;	1617	dREQ;
1093		1618
1094	req->type = ix;	1619	req->type = ix;
1095	req->fh = newSVsv (fh);	1620	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1621	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	1622	: IoOFP (sv_2io (fh)));
		1623	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	1624	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	1625	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1626	req->ptr1 = (char *)svptr + dataoffset;
		1627	req->stroffset = dataoffset;
1102		1628
1103	if (!SvREADONLY (data))	1629	if (!SvREADONLY (data))
1104	{	1630	{
1105	SvREADONLY_on (data);	1631	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1632	req->flags |= FLAG_SV2_RO_OFF;
1107	}	1633	}
1108		1634
1109	REQ_SEND;	1635	REQ_SEND;
1110	}	1636	}
1111	}	1637	}
1112		1638
1113	void	1639	void
		1640	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1641	PROTOTYPE: $$;$
		1642	PPCODE:
		1643	{
		1644	SV *data;
		1645	dREQ;
		1646
		1647	data = newSV (NAME_MAX);
		1648	SvPOK_on (data);
		1649
		1650	req->type = REQ_READLINK;
		1651	req->sv1 = newSVsv (path);
		1652	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1653	req->sv2 = data;
		1654	req->ptr1 = SvPVbyte_nolen (data);
		1655
		1656	REQ_SEND;
		1657	}
		1658
		1659	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1660	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: $$$$;$	1661	PROTOTYPE: $$$$;$
1121	PPCODE:	1662	PPCODE:
1122	{	1663	{
1123	dREQ;	1664	dREQ;
1124		1665
1125	req->type = REQ_SENDFILE;	1666	req->type = REQ_SENDFILE;
1126	req->fh = newSVsv (out_fh);	1667	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	1669	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1670	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	1671	req->offs = SvVAL64 (in_offset);
1131	req->length = length;	1672	req->size = length;
1132		1673
1133	REQ_SEND;	1674	REQ_SEND;
1134	}	1675	}
1135		1676
1136	void	1677	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1678	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$	1679	PROTOTYPE: $$$;$
1143	PPCODE:	1680	PPCODE:
1144	{	1681	{
1145	dREQ;	1682	dREQ;
1146		1683
1147	req->type = REQ_READAHEAD;	1684	req->type = REQ_READAHEAD;
1148	req->fh = newSVsv (fh);	1685	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1686	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	1687	req->offs = SvVAL64 (offset);
1151	req->length = length;	1688	req->size = length;
1152		1689
1153	REQ_SEND;	1690	REQ_SEND;
1154	}	1691	}
1155		1692
1156	void	1693	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	1694	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	1695	ALIAS:
1161	aio_stat = REQ_STAT	1696	aio_stat = REQ_STAT
1162	aio_lstat = REQ_LSTAT	1697	aio_lstat = REQ_LSTAT
1163	PPCODE:	1698	PPCODE:
1164	{	1699	{
1165	dREQ;	1700	dREQ;
1166		1701
1167	New (0, req->statdata, 1, Stat_t);	1702	req->ptr2 = malloc (sizeof (Stat_t));
1168	if (!req->statdata)	1703	if (!req->ptr2)
1169	{	1704	{
1170	req_free (req);	1705	req_destroy (req);
1171	croak ("out of memory during aio_req->statdata allocation");	1706	croak ("out of memory during aio_stat statdata allocation");
1172	}	1707	}
		1708
		1709	req->flags |= FLAG_PTR2_FREE;
		1710	req->sv1 = newSVsv (fh_or_path);
1173		1711
1174	if (SvPOK (fh_or_path))	1712	if (SvPOK (fh_or_path))
1175	{	1713	{
1176	req->type = ix;	1714	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	1715	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	1716	}
1180	else	1717	else
1181	{	1718	{
1182	req->type = REQ_FSTAT;	1719	req->type = REQ_FSTAT;
1183	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1720	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	1721	}
1186		1722
1187	REQ_SEND;	1723	REQ_SEND;
1188	}	1724	}
1189		1725
1190	void	1726	void
		1727	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1728	PPCODE:
		1729	{
		1730	dREQ;
		1731
		1732	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1733	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1734	req->sv1 = newSVsv (fh_or_path);
		1735
		1736	if (SvPOK (fh_or_path))
		1737	{
		1738	req->type = REQ_UTIME;
		1739	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1740	}
		1741	else
		1742	{
		1743	req->type = REQ_FUTIME;
		1744	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1745	}
		1746
		1747	REQ_SEND;
		1748	}
		1749
		1750	void
		1751	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1752	PPCODE:
		1753	{
		1754	dREQ;
		1755
		1756	req->sv1 = newSVsv (fh_or_path);
		1757	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1758
		1759	if (SvPOK (fh_or_path))
		1760	{
		1761	req->type = REQ_TRUNCATE;
		1762	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1763	}
		1764	else
		1765	{
		1766	req->type = REQ_FTRUNCATE;
		1767	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1768	}
		1769
		1770	REQ_SEND;
		1771	}
		1772
		1773	void
		1774	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1775	PPCODE:
		1776	{
		1777	dREQ;
		1778
		1779	req->mode = mode;
		1780	req->sv1 = newSVsv (fh_or_path);
		1781
		1782	if (SvPOK (fh_or_path))
		1783	{
		1784	req->type = REQ_CHMOD;
		1785	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1786	}
		1787	else
		1788	{
		1789	req->type = REQ_FCHMOD;
		1790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1791	}
		1792
		1793	REQ_SEND;
		1794	}
		1795
		1796	void
		1797	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1798	PPCODE:
		1799	{
		1800	dREQ;
		1801
		1802	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1803	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1804	req->sv1 = newSVsv (fh_or_path);
		1805
		1806	if (SvPOK (fh_or_path))
		1807	{
		1808	req->type = REQ_CHOWN;
		1809	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1810	}
		1811	else
		1812	{
		1813	req->type = REQ_FCHOWN;
		1814	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1815	}
		1816
		1817	REQ_SEND;
		1818	}
		1819
		1820	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1821	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	1822	ALIAS:
1195	aio_unlink = REQ_UNLINK	1823	aio_unlink = REQ_UNLINK
1196	aio_rmdir = REQ_RMDIR	1824	aio_rmdir = REQ_RMDIR
1197	aio_readdir = REQ_READDIR	1825	aio_readdir = REQ_READDIR
1198	PPCODE:	1826	PPCODE:
1199	{	1827	{
1200	dREQ;	1828	dREQ;
1201		1829
1202	req->type = ix;	1830	req->type = ix;
1203	req->data = newSVsv (pathname);	1831	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1832	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1833
		1834	REQ_SEND;
		1835	}
		1836
		1837	void
		1838	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1839	PPCODE:
		1840	{
		1841	dREQ;
1205		1842
		1843	req->type = REQ_MKDIR;
		1844	req->sv1 = newSVsv (pathname);
		1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1846	req->mode = mode;
		1847
1206	REQ_SEND;	1848	REQ_SEND;
1207	}	1849	}
1208		1850
1209	void	1851	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1852	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:	1853	ALIAS:
1215	aio_link = REQ_LINK	1854	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK	1855	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME	1856	aio_rename = REQ_RENAME
1218	PPCODE:	1857	PPCODE:
1219	{	1858	{
1220	dREQ;	1859	dREQ;
1221		1860
1222	req->type = ix;	1861	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1862	req->sv2 = newSVsv (oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1863	req->ptr2 = SvPVbyte_nolen (req->sv2);
1225	req->data = newSVsv (newpath);	1864	req->sv1 = newSVsv (newpath);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227		1866
1228	REQ_SEND;	1867	REQ_SEND;
1229	}	1868	}
1230		1869
1231	void	1870	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1871	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	1872	PPCODE:
1236	{	1873	{
1237	dREQ;	1874	dREQ;
1238		1875
1239	req->type = REQ_SLEEP;	1876	req->type = REQ_MKNOD;
1240	req->fd = delay < 0. ? 0 : delay;	1877	req->sv1 = newSVsv (pathname);
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1878	req->ptr1 = SvPVbyte_nolen (req->sv1);
1242		1879	req->mode = (mode_t)mode;
		1880	req->offs = dev;
		1881
1243	REQ_SEND;	1882	REQ_SEND;
1244	}	1883	}
1245		1884
1246	void	1885	void
		1886	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1887	PPCODE:
		1888	{
		1889	dREQ;
		1890
		1891	req->type = REQ_BUSY;
		1892	req->nv1 = delay < 0. ? 0. : delay;
		1893
		1894	REQ_SEND;
		1895	}
		1896
		1897	void
1247	aio_group (callback=&PL_sv_undef)	1898	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$	1899	PROTOTYPE: ;$
1250	PPCODE:	1900	PPCODE:
1251	{	1901	{
1252	dREQ;	1902	dREQ;
1253		1903
1254	req->type = REQ_GROUP;	1904	req->type = REQ_GROUP;
		1905
1255	req_send (req);	1906	req_send (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1907	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	1908	}
1259		1909
1260	void	1910	void
1261	aio_nop (callback=&PL_sv_undef)	1911	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback	1912	ALIAS:
		1913	aio_nop = REQ_NOP
		1914	aio_sync = REQ_SYNC
1263	PPCODE:	1915	PPCODE:
1264	{	1916	{
1265	dREQ;	1917	dREQ;
1266		1918
1267	req->type = REQ_NOP;	1919	req->type = ix;
1268		1920
1269	REQ_SEND;	1921	REQ_SEND;
1270	}	1922	}
1271		1923
1272	#if 0	1924	int
1273		1925	aioreq_pri (int pri = 0)
1274	void	1926	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1927	CODE:
		1928	RETVAL = next_pri - PRI_BIAS;
		1929	if (items > 0)
		1930	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1931	if (pri < PRI_MIN) pri = PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1932	if (pri > PRI_MAX) pri = PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1933	next_pri = pri + PRI_BIAS;
		1934	}
		1935	OUTPUT:
		1936	RETVAL
1280		1937
1281	#endif	1938	void
		1939	aioreq_nice (int nice = 0)
		1940	CODE:
		1941	nice = next_pri - nice;
		1942	if (nice < PRI_MIN) nice = PRI_MIN;
		1943	if (nice > PRI_MAX) nice = PRI_MAX;
		1944	next_pri = nice + PRI_BIAS;
1282		1945
1283	void	1946	void
1284	flush ()	1947	flush ()
1285	PROTOTYPE:	1948	PROTOTYPE:
1286	CODE:	1949	CODE:
…		…
1288	{	1951	{
1289	poll_wait ();	1952	poll_wait ();
1290	poll_cb ();	1953	poll_cb ();
1291	}	1954	}
1292		1955
1293	void	1956	int
1294	poll()	1957	poll()
1295	PROTOTYPE:	1958	PROTOTYPE:
1296	CODE:	1959	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	1960	poll_wait ();
1300	poll_cb ();	1961	RETVAL = poll_cb ();
1301	}	1962	OUTPUT:
		1963	RETVAL
1302		1964
1303	int	1965	int
1304	poll_fileno()	1966	poll_fileno()
1305	PROTOTYPE:	1967	PROTOTYPE:
1306	CODE:	1968	CODE:
…		…
1318		1980
1319	void	1981	void
1320	poll_wait()	1982	poll_wait()
1321	PROTOTYPE:	1983	PROTOTYPE:
1322	CODE:	1984	CODE:
1323	if (nreqs)
1324	poll_wait ();	1985	poll_wait ();
		1986
		1987	void
		1988	setsig (int signum = SIGIO)
		1989	PROTOTYPE: ;$
		1990	CODE:
		1991	{
		1992	if (block_sig_level)
		1993	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1994
		1995	X_LOCK (reslock);
		1996	main_tid = pthread_self ();
		1997	main_sig = signum;
		1998	X_UNLOCK (reslock);
		1999
		2000	if (main_sig && npending)
		2001	pthread_kill (main_tid, main_sig);
		2002	}
		2003
		2004	void
		2005	aio_block (SV *cb)
		2006	PROTOTYPE: &
		2007	PPCODE:
		2008	{
		2009	int count;
		2010
		2011	block_sig ();
		2012	PUSHMARK (SP);
		2013	PUTBACK;
		2014	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		2015	unblock_sig ();
		2016
		2017	if (SvTRUE (ERRSV))
		2018	croak (0);
		2019
		2020	XSRETURN (count);
		2021	}
1325		2022
1326	int	2023	int
1327	nreqs()	2024	nreqs()
1328	PROTOTYPE:	2025	PROTOTYPE:
1329	CODE:	2026	CODE:
1330	RETVAL = nreqs;	2027	RETVAL = nreqs;
1331	OUTPUT:	2028	OUTPUT:
1332	RETVAL	2029	RETVAL
1333		2030
		2031	int
		2032	nready()
		2033	PROTOTYPE:
		2034	CODE:
		2035	RETVAL = get_nready ();
		2036	OUTPUT:
		2037	RETVAL
		2038
		2039	int
		2040	npending()
		2041	PROTOTYPE:
		2042	CODE:
		2043	RETVAL = get_npending ();
		2044	OUTPUT:
		2045	RETVAL
		2046
		2047	int
		2048	nthreads()
		2049	PROTOTYPE:
		2050	CODE:
		2051	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2052	RETVAL = started;
		2053	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2054	OUTPUT:
		2055	RETVAL
		2056
1334	PROTOTYPES: DISABLE	2057	PROTOTYPES: DISABLE
1335		2058
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2059	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		2060
1338	void	2061	void
1339	cancel (aio_req_ornot req)	2062	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	2063	CODE:
1342	req_cancel (req);	2064	req_cancel (req);
1343		2065
1344	void	2066	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2067	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1354	PPCODE:	2076	PPCODE:
1355	{	2077	{
1356	int i;	2078	int i;
1357	aio_req req;	2079	aio_req req;
1358		2080
		2081	if (main_sig && !block_sig_level)
		2082	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2083
1359	if (grp->fd == 2)	2084	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2085	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		2086
1362	for (i = 1; i < items; ++i )	2087	for (i = 1; i < items; ++i )
1363	{	2088	{
1364	if (GIMME_V != G_VOID)	2089	if (GIMME_V != G_VOID)
…		…
1366		2091
1367	req = SvAIO_REQ (ST (i));	2092	req = SvAIO_REQ (ST (i));
1368		2093
1369	if (req)	2094	if (req)
1370	{	2095	{
1371	++grp->length;	2096	++grp->size;
1372	req->grp = grp;	2097	req->grp = grp;
1373		2098
1374	req->grp_prev = 0;	2099	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;	2100	req->grp_next = grp->grp_first;
1376		2101
…		…
1381	}	2106	}
1382	}	2107	}
1383	}	2108	}
1384		2109
1385	void	2110	void
		2111	cancel_subs (aio_req_ornot req)
		2112	CODE:
		2113	req_cancel_subs (req);
		2114
		2115	void
1386	result (aio_req grp, ...)	2116	result (aio_req grp, ...)
1387	CODE:	2117	CODE:
1388	{	2118	{
1389	int i;	2119	int i;
		2120	AV *av;
		2121
		2122	grp->errorno = errno;
		2123
1390	AV *av = newAV ();	2124	av = newAV ();
1391		2125
1392	for (i = 1; i < items; ++i )	2126	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	2127	av_push (av, newSVsv (ST (i)));
1394		2128
1395	SvREFCNT_dec (grp->data);	2129	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	2130	grp->sv1 = (SV *)av;
1397	}	2131	}
1398		2132
1399	void	2133	void
		2134	errno (aio_req grp, int errorno = errno)
		2135	CODE:
		2136	grp->errorno = errorno;
		2137
		2138	void
1400	feed_limit (aio_req grp, int limit)	2139	limit (aio_req grp, int limit)
1401	CODE:	2140	CODE:
1402	grp->fd2 = limit;	2141	grp->int2 = limit;
1403	aio_grp_feed (grp);	2142	aio_grp_feed (grp);
1404		2143
1405	void	2144	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	2145	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	2146	CODE:
1408	{	2147	{
1409	SvREFCNT_dec (grp->fh2);	2148	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	2149	grp->sv2 = newSVsv (callback);
1411		2150
1412	if (grp->fd2 <= 0)	2151	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	2152	grp->int2 = 2;
1414		2153
1415	aio_grp_feed (grp);	2154	aio_grp_feed (grp);
1416	}	2155	}
1417		2156

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