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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.67 by root, Tue Oct 24 03:17:39 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
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif
56
57	/* buffer size for various temporary buffers */	92	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	93	#define AIO_BUFSIZE 65536
59		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
		98	#else
		99	# define SvVAL64 SvNV
		100	#endif
		101
		102	static HV *stash;
		103
60	#define dBUF \	104	#define dBUF \
		105	char *aio_buf; \
		106	X_LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		108	X_UNLOCK (wrklock); \
62	if (!aio_buf) \	109	if (!aio_buf) \
63	return -1;	110	return -1;
64		111
65	#define fBUF free (aio_buf)	112	typedef SV SV8; /* byte-sv, used for argument-checking */
66		113
67	enum {	114	enum {
68	REQ_QUIT,	115	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
71	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
72	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,
73	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	128	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	129	REQ_BUSY,
79	};	130	};
80		131
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	132	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	133	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		134
84	typedef struct aio_cb	135	typedef struct aio_cb
85	{	136	{
86	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
87		138
88	SV *data, *callback;	139	SV *callback;
89	SV *fh, *fh2;	140	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	141	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	142	off_t offs;
93	size_t length;	143	size_t size;
94	ssize_t result;	144	ssize_t result;
		145	double nv1, nv2;
95		146
96	STRLEN dataoffset;	147	STRLEN stroffset;
97	int type;	148	int type;
98	int fd, fd2;	149	int int1, int2, int3;
99	int errorno;	150	int errorno;
100	mode_t mode; /* open */	151	mode_t mode; /* open */
101		152
102	unsigned char flags;	153	unsigned char flags;
103	unsigned char pri;	154	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	156	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	158	} aio_cb;
108		159
109	enum {	160	enum {
110	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) */
111	};	164	};
112		165
113	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
115		168
…		…
120	DEFAULT_PRI = 0,	173	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	174	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};	176	};
124		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
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;	224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126		225
127	static int started, wanted;	226	static unsigned int started, idle, wanted;
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;
130	static int respipe [2];
131		227
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	228	/* worker threads management */
133	# 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
134	#else	312	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	313
		314	# define get_nready() nready
		315	# define get_npending() npending
		316	# define get_nthreads() started
		317
136	#endif	318	#endif
137
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
141		319
142	/*	320	/*
143	* a somewhat faster data structure might be nice, but	321	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns	322	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.	323	* per shift, the most expensive operation.
…		…
191	}	369	}
192		370
193	abort ();	371	abort ();
194	}	372	}
195		373
		374	static int poll_cb (void);
196	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
		376	static void req_destroy (aio_req req);
197	static void req_free (aio_req req);	377	static void req_cancel (aio_req req);
198		378
199	/* must be called at most once */	379	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
201	{	381	{
202	if (!req->self)	382	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	401	}
222		402
223	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
224	{	404	{
		405	block_sig ();
		406
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
226	{	408	{
227	int old_len = grp->length;	409	int old_len = grp->size;
228		410
229	if (grp->fh2 && SvOK (grp->fh2))	411	if (grp->sv2 && SvOK (grp->sv2))
230	{	412	{
231	dSP;	413	dSP;
232		414
233	ENTER;	415	ENTER;
234	SAVETMPS;	416	SAVETMPS;
235	PUSHMARK (SP);	417	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	419	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	421	SPAGAIN;
240	FREETMPS;	422	FREETMPS;
241	LEAVE;	423	LEAVE;
242	}	424	}
243		425
244	/* stop if no progress has been made */	426	/* stop if no progress has been made */
245	if (old_len == grp->length)	427	if (old_len == grp->size)
246	{	428	{
247	SvREFCNT_dec (grp->fh2);	429	SvREFCNT_dec (grp->sv2);
248	grp->fh2 = 0;	430	grp->sv2 = 0;
249	break;	431	break;
250	}	432	}
251	}	433	}
		434
		435	unblock_sig ();
252	}	436	}
253		437
254	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
255	{	439	{
256	--grp->length;	440	--grp->size;
257		441
258	/* call feeder, if applicable */	442	/* call feeder, if applicable */
259	aio_grp_feed (grp);	443	aio_grp_feed (grp);
260		444
261	/* finish, if done */	445	/* finish, if done */
262	if (!grp->length && grp->fd)	446	if (!grp->size && grp->int1)
263	{	447	{
		448	block_sig ();
		449
264	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
265	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
266	}	459	}
267	}	460	}
268		461
269	static void poll_wait ()
270	{
271	fd_set rfd;
272
273	while (nreqs)
274	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
295	{	463	{
296	dSP;	464	dSP;
		465
		466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
297		468
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{	470	{
300	errno = req->errorno;
301
302	ENTER;	471	ENTER;
303	SAVETMPS;	472	SAVETMPS;
304	PUSHMARK (SP);	473	PUSHMARK (SP);
305	EXTEND (SP, 1);	474	EXTEND (SP, 1);
306		475
…		…
310	{	479	{
311	SV *rv = &PL_sv_undef;	480	SV *rv = &PL_sv_undef;
312		481
313	if (req->result >= 0)	482	if (req->result >= 0)
314	{	483	{
		484	int i;
315	char *buf = req->data2ptr;	485	char *buf = req->ptr2;
316	AV *av = newAV ();	486	AV *av = newAV ();
317		487
318	while (req->result)	488	av_extend (av, req->result - 1);
		489
		490	for (i = 0; i < req->result; ++i)
319	{	491	{
320	SV *sv = newSVpv (buf, 0);	492	SV *sv = newSVpv (buf, 0);
321		493
322	av_push (av, sv);	494	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	495	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	496	}
326		497
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	498	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	499	}
329		500
…		…
332	break;	503	break;
333		504
334	case REQ_OPEN:	505	case REQ_OPEN:
335	{	506	{
336	/* convert fd to fh */	507	/* convert fd to fh */
337	SV *fh;	508	SV *fh = &PL_sv_undef;
338		509
339	PUSHs (sv_2mortal (newSViv (req->result)));	510	if (req->result >= 0)
340	PUTBACK;	511	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	512	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	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);
343		519
344	fh = SvREFCNT_inc (POPs);	520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	req->result
		526	);
345		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = (SV *)gv;
		530	}
		531
346	PUSHMARK (SP);	532	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	533	}
349	break;	534	break;
350		535
351	case REQ_GROUP:	536	case REQ_GROUP:
352	req->fd = 2; /* mark group as finished */	537	req->int1 = 2; /* mark group as finished */
353		538
354	if (req->data)	539	if (req->sv1)
355	{	540	{
356	int i;	541	int i;
357	AV *av = (AV *)req->data;	542	AV *av = (AV *)req->sv1;
358		543
359	EXTEND (SP, AvFILL (av) + 1);	544	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	545	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	546	PUSHs (*av_fetch (av, i, 0));
362	}	547	}
363	break;	548	break;
364		549
365	case REQ_NOP:	550	case REQ_NOP:
366	case REQ_SLEEP:	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)));
367	break;	576	break;
368		577
369	default:	578	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	579	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	580	break;
372	}	581	}
373		582
		583	errno = req->errorno;
374		584
375	PUTBACK;	585	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	587	SPAGAIN;
378		588
379	FREETMPS;	589	FREETMPS;
380	LEAVE;	590	LEAVE;
		591
		592	PUTBACK;
381	}	593	}
382		594
383	if (req->grp)	595	if (req->grp)
384	{	596	{
385	aio_req grp = req->grp;	597	aio_req grp = req->grp;
…		…
392	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
393		605
394	aio_grp_dec (grp);	606	aio_grp_dec (grp);
395	}	607	}
396		608
397	if (SvTRUE (ERRSV))	609	return !SvTRUE (ERRSV);
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	610	}
403		611
404	static void req_free (aio_req req)	612	static void req_destroy (aio_req req)
405	{	613	{
406	if (req->self)	614	if (req->self)
407	{	615	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
410	}	618	}
411		619
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		623
418	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
419	free (req->data2ptr);	625	free (req->ptr2);
420		626
421	Safefree (req);	627	Safefree (req);
422	}	628	}
423		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
424	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
425	{	645	{
426	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
427		647
428	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)
429	{	673	{
430	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
431		676
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	677	respipe_close (respipe [0]);
433	req_cancel (sub);	678	respipe [0] = old_readfd;
434	}	679	}
435	}
436		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
437	static int poll_cb ()	813	static int poll_cb (void)
438	{	814	{
439	dSP;	815	dSP;
440	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
441	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
442	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
443		826
444	for (;;)	827	for (;;)
445	{	828	{
446	pthread_mutex_lock (&reslock);	829	for (;;)
447	req = reqq_shift (&res_queue);
448
449	if (req)
450	{	830	{
		831	maybe_start_thread ();
		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
451	if (!res_queue.size)	836	if (req)
452	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
453	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
454	char buf [32];	843	char buf [4];
455	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
456	;	846	}
		847	}
		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)
		883	break;
457	}	884	}
458	}	885	}
459		886
460	pthread_mutex_unlock (&reslock);	887	if (nreqs <= max_outstanding)
461
462	if (!req)
463	break;	888	break;
464		889
465	--nreqs;	890	poll_wait ();
466		891
467	if (req->type == REQ_QUIT)	892	++maxreqs;
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}
474	else
475	{
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}	893	}
496		894
		895	unblock_sig ();
497	return count;	896	return count;
498	}
499
500	static void *aio_proc(void *arg);
501
502	static void start_thread (void)
503	{
504	sigset_t fullsigset, oldsigset;
505	pthread_t tid;
506	pthread_attr_t attr;
507
508	pthread_attr_init (&attr);
509	pthread_attr_setstacksize (&attr, STACKSIZE);
510	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512	sigfillset (&fullsigset);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516	started++;
517
518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
519	}
520
521	static void req_send (aio_req req)
522	{
523	while (started < wanted && nreqs >= started)
524	start_thread ();
525
526	++nreqs;
527
528	pthread_mutex_lock (&reqlock);
529	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);
532
533	if (nreqs > max_outstanding)
534	for (;;)
535	{
536	poll_cb ();
537
538	if (nreqs <= max_outstanding)
539	break;
540
541	poll_wait ();
542	}
543	}
544
545	static void end_thread (void)
546	{
547	aio_req req;
548
549	Newz (0, req, 1, aio_cb);
550
551	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;
553
554	req_send (req);
555	}
556
557	static void min_parallel (int nthreads)
558	{
559	if (wanted < nthreads)
560	wanted = nthreads;
561	}
562
563	static void max_parallel (int nthreads)
564	{
565	int cur = started;
566
567	if (wanted > nthreads)
568	wanted = nthreads;
569
570	while (cur > wanted)
571	{
572	end_thread ();
573	cur--;
574	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}
582
583	static void create_pipe ()
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
589	croak ("cannot set result pipe to nonblocking mode");
590
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593	}	897	}
594		898
595	/*****************************************************************************/	899	/*****************************************************************************/
596	/* work around various missing functions */	900	/* work around various missing functions */
597		901
…		…
602	/*	906	/*
603	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
604	* 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,
605	* but that's your problem, not mine.	909	* but that's your problem, not mine.
606	*/	910	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
608		912
609	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)
610	{	914	{
611	ssize_t res;	915	ssize_t res;
612	off_t ooffset;	916	off_t ooffset;
613		917
614	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);	921	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
620		924
621	return res;	925	return res;
622	}	926	}
623		927
624	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)
625	{	929	{
626	ssize_t res;	930	ssize_t res;
627	off_t ooffset;	931	off_t ooffset;
628		932
629	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);	936	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
635		939
636	return res;	940	return res;
637	}	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
638	#endif	970	#endif
639		971
640	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
641	# define fdatasync fsync	973	# define fdatasync fsync
642	#endif	974	#endif
643		975
644	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
645	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
646		978
647	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)
648	{	980	{
		981	size_t todo = count;
649	dBUF;	982	dBUF;
650		983
651	while (count > 0)	984	while (todo > 0)
652	{	985	{
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
654		987
655	pread (fd, aio_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
656	offset += len;	989	offset += len;
657	count -= len;	990	todo -= len;
658	}	991	}
659		992
660	fBUF;
661
662	errno = 0;	993	errno = 0;
		994	return count;
663	}	995	}
		996
664	#endif	997	#endif
665		998
666	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
668		1001
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
670		1003
671	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)
672	{	1005	{
673	struct dirent *e;	1006	X_DIRENT *e;
674	int errorno;	1007	int errorno;
675		1008
676	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
677		1010
678	e = readdir (dirp);	1011	e = readdir (dirp);
679	errorno = errno;	1012	errorno = errno;
680		1013
681	if (e)	1014	if (e)
…		…
684	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
685	}	1018	}
686	else	1019	else
687	*res = 0;	1020	*res = 0;
688		1021
689	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
690		1023
691	errno = errorno;	1024	errno = errorno;
692	return e ? 0 : -1;	1025	return e ? 0 : -1;
693	}	1026	}
694	#endif	1027	#endif
695		1028
696	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
697	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)
698	{	1031	{
699	ssize_t res;	1032	ssize_t res;
700		1033
701	if (!count)	1034	if (!count)
702	return 0;	1035	return 0;
…		…
713	{	1046	{
714	off_t sbytes;	1047	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716		1049
717	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
719	res = sbytes;	1052	res = sbytes;
720	}	1053	}
721		1054
722	# elif __hpux	1055	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
779		1112
780	offset += cnt;	1113	offset += cnt;
781	res += cnt;	1114	res += cnt;
782	count -= cnt;	1115	count -= cnt;
783	}	1116	}
784
785	fBUF;
786	}	1117	}
787		1118
788	return res;	1119	return res;
789	}	1120	}
790		1121
791	/* read a full directory */	1122	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)	1123	static void scandir_ (aio_req req, worker *self)
793	{	1124	{
794	DIR *dirp;	1125	DIR *dirp;
795	union	1126	union
796	{	1127	{
797	struct dirent d;	1128	X_DIRENT d;
798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
799	} *u;	1130	} *u;
800	struct dirent *entp;	1131	X_DIRENT *entp;
801	char *name, *names;	1132	char *name, *names;
802	int memlen = 4096;	1133	int memlen = 4096;
803	int memofs = 0;	1134	int memofs = 0;
804	int res = 0;	1135	int res = 0;
805	int errorno;
806		1136
807	dirp = opendir (path);	1137	X_LOCK (wrklock);
808	if (!dirp)	1138	self->dirp = dirp = opendir (req->ptr1);
809	return -1;
810
811	u = malloc (sizeof (*u));	1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
812	names = malloc (memlen);	1141	req->ptr2 = names = malloc (memlen);
		1142	X_UNLOCK (wrklock);
813		1143
814	if (u && names)	1144	if (dirp && u && names)
815	for (;;)	1145	for (;;)
816	{	1146	{
817	errno = 0;	1147	errno = 0;
818	readdir_r (dirp, &u->d, &entp);	1148	readdir_r (dirp, &u->d, &entp);
819		1149
…		…
829	res++;	1159	res++;
830		1160
831	while (memofs + len > memlen)	1161	while (memofs + len > memlen)
832	{	1162	{
833	memlen *= 2;	1163	memlen *= 2;
		1164	X_LOCK (wrklock);
834	names = realloc (names, memlen);	1165	req->ptr2 = names = realloc (names, memlen);
		1166	X_UNLOCK (wrklock);
		1167
835	if (!names)	1168	if (!names)
836	break;	1169	break;
837	}	1170	}
838		1171
839	memcpy (names + memofs, name, len);	1172	memcpy (names + memofs, name, len);
840	memofs += len;	1173	memofs += len;
841	}	1174	}
842	}	1175	}
843		1176
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	if (errorno)	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)
849	{	1191	{
850	free (names);	1192	int pipefd [2];
851	errno = errorno;	1193
852	res = -1;	1194	if (pipe (pipefd) < 0
		1195	|| close (pipefd [1]) < 0
		1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1197	{
		1198	X_UNLOCK (wrklock);
		1199	return -1;
		1200	}
		1201
		1202	close_pipe = pipefd [0];
853	}	1203	}
854		1204
855	*namesp = (void *)names;	1205	X_UNLOCK (wrklock);
856	return res;	1206
		1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
857	}	1208	}
858		1209
859	/*****************************************************************************/	1210	/*****************************************************************************/
860		1211
861	static void *aio_proc (void *thr_arg)	1212	X_THREAD_PROC (aio_proc)
862	{	1213	{
863	aio_req req;	1214	aio_req req;
864	int type;	1215	struct timespec ts;
		1216	worker *self = (worker *)thr_arg;
865		1217
866	do	1218	/* try to distribute timeouts somewhat randomly */
		1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1220
		1221	for (;;)
867	{	1222	{
868	pthread_mutex_lock (&reqlock);	1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1224
		1225	X_LOCK (reqlock);
869		1226
870	for (;;)	1227	for (;;)
871	{	1228	{
872	req = reqq_shift (&req_queue);	1229	self->req = req = reqq_shift (&req_queue);
873		1230
874	if (req)	1231	if (req)
875	break;	1232	break;
876		1233
877	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;
878	}	1255	}
879		1256
880	pthread_mutex_unlock (&reqlock);	1257	--nready;
		1258
		1259	X_UNLOCK (reqlock);
881		1260
882	errno = 0; /* strictly unnecessary */	1261	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884		1262
885	if (!(req->flags & FLAG_CANCELLED))	1263	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)	1264	switch (req->type)
887	{	1265	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1266	case REQ_READ: req->result = req->offs >= 0
889	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;
890		1272
891	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;
892	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;
893		1275
894	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;
895	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;
896	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;
897		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
898	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;
899	case REQ_CLOSE: req->result = close (req->fd); break;	1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
901	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;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
904	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;
905		1297
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1298	case REQ_SYNC: req->result = 0; sync (); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;	1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
909		1301
		1302	case REQ_READDIR: scandir_ (req, self); break;
		1303
910	case REQ_SLEEP:	1304	case REQ_BUSY:
		1305	#ifdef _WIN32
		1306	Sleep (req->nv1 * 1000.);
		1307	#else
911	{	1308	{
912	struct timeval tv;	1309	struct timeval tv;
913		1310
914	tv.tv_sec = req->fd;	1311	tv.tv_sec = req->nv1;
915	tv.tv_usec = req->fd2;	1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
916		1313
917	req->result = select (0, 0, 0, 0, &tv);	1314	req->result = select (0, 0, 0, 0, &tv);
918	}	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	}
919		1342
920	case REQ_GROUP:	1343	case REQ_GROUP:
921	case REQ_NOP:	1344	case REQ_NOP:
		1345	break;
		1346
922	case REQ_QUIT:	1347	case REQ_QUIT:
923	break;	1348	goto quit;
924		1349
925	default:	1350	default:
926	req->result = ENOSYS;	1351	req->result = -1;
927	break;	1352	break;
928	}	1353	}
929		1354
930	req->errorno = errno;	1355	req->errorno = errno;
931		1356
932	pthread_mutex_lock (&reslock);	1357	X_LOCK (reslock);
		1358
		1359	++npending;
933		1360
934	if (!reqq_push (&res_queue, req))	1361	if (!reqq_push (&res_queue, req))
		1362	{
935	/* write a dummy byte to the pipe so fh becomes ready */	1363	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);	1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
937		1365
938	pthread_mutex_unlock (&reslock);	1366	/* optionally signal the main thread asynchronously */
		1367	if (main_sig)
		1368	pthread_kill (main_tid, main_sig);
		1369	}
		1370
		1371	self->req = 0;
		1372	worker_clear (self);
		1373
		1374	X_UNLOCK (reslock);
939	}	1375	}
940	while (type != REQ_QUIT);	1376
		1377	quit:
		1378	X_LOCK (wrklock);
		1379	worker_free (self);
		1380	X_UNLOCK (wrklock);
941		1381
942	return 0;	1382	return 0;
943	}	1383	}
944		1384
945	/*****************************************************************************/	1385	/*****************************************************************************/
946		1386
947	static void atfork_prepare (void)	1387	static void atfork_prepare (void)
948	{	1388	{
949	pthread_mutex_lock (&reqlock);	1389	X_LOCK (wrklock);
950	pthread_mutex_lock (&reslock);	1390	X_LOCK (reqlock);
		1391	X_LOCK (reslock);
951	#if !HAVE_PREADWRITE	1392	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);	1393	X_LOCK (preadwritelock);
953	#endif	1394	#endif
954	#if !HAVE_READDIR_R	1395	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);	1396	X_LOCK (readdirlock);
956	#endif	1397	#endif
957	}	1398	}
958		1399
959	static void atfork_parent (void)	1400	static void atfork_parent (void)
960	{	1401	{
961	#if !HAVE_READDIR_R	1402	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);	1403	X_UNLOCK (readdirlock);
963	#endif	1404	#endif
964	#if !HAVE_PREADWRITE	1405	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);	1406	X_UNLOCK (preadwritelock);
966	#endif	1407	#endif
967	pthread_mutex_unlock (&reslock);	1408	X_UNLOCK (reslock);
968	pthread_mutex_unlock (&reqlock);	1409	X_UNLOCK (reqlock);
		1410	X_UNLOCK (wrklock);
969	}	1411	}
970		1412
971	static void atfork_child (void)	1413	static void atfork_child (void)
972	{	1414	{
973	aio_req prv;	1415	aio_req prv;
974		1416
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))	1417	while (prv = reqq_shift (&req_queue))
978	req_free (prv);	1418	req_destroy (prv);
979		1419
980	while (prv = reqq_shift (&res_queue))	1420	while (prv = reqq_shift (&res_queue))
981	req_free (prv);	1421	req_destroy (prv);
982		1422
983	close (respipe [0]);	1423	while (wrk_first.next != &wrk_first)
984	close (respipe [1]);	1424	{
		1425	worker *wrk = wrk_first.next;
		1426
		1427	if (wrk->req)
		1428	req_destroy (wrk->req);
		1429
		1430	worker_clear (wrk);
		1431	worker_free (wrk);
		1432	}
		1433
		1434	started = 0;
		1435	idle = 0;
		1436	nreqs = 0;
		1437	nready = 0;
		1438	npending = 0;
		1439
985	create_pipe ();	1440	create_respipe ();
986		1441
987	atfork_parent ();	1442	atfork_parent ();
988	}	1443	}
989		1444
990	#define dREQ \	1445	#define dREQ \
…		…
1012		1467
1013	PROTOTYPES: ENABLE	1468	PROTOTYPES: ENABLE
1014		1469
1015	BOOT:	1470	BOOT:
1016	{	1471	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	1472	stash = gv_stashpv ("IO::AIO", 1);
		1473
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	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);
1021		1486
1022	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
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1024	}	1496	}
1025		1497
1026	void	1498	void
1027	min_parallel (nthreads)	1499	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	1500	PROTOTYPE: $
		1501	CODE:
		1502	max_poll_reqs = nreqs;
1030		1503
1031	void	1504	void
1032	max_parallel (nthreads)	1505	max_poll_time (double nseconds)
1033	int nthreads
1034	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);
1035		1523
1036	int	1524	int
1037	max_outstanding (nreqs)	1525	max_outstanding (int maxreqs)
1038	int nreqs	1526	PROTOTYPE: $
1039	PROTOTYPE: $
1040	CODE:	1527	CODE:
1041	RETVAL = max_outstanding;	1528	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;	1529	max_outstanding = maxreqs;
		1530	OUTPUT:
		1531	RETVAL
1043		1532
1044	void	1533	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$	1535	PROTOTYPE: $$$;$
1051	PPCODE:	1536	PPCODE:
1052	{	1537	{
1053	dREQ;	1538	dREQ;
1054		1539
1055	req->type = REQ_OPEN;	1540	req->type = REQ_OPEN;
1056	req->data = newSVsv (pathname);	1541	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1542	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	1543	req->int1 = flags;
1059	req->mode = mode;	1544	req->mode = mode;
1060		1545
1061	REQ_SEND;	1546	REQ_SEND;
1062	}	1547	}
1063		1548
1064	void	1549	void
1065	aio_close (fh,callback=&PL_sv_undef)	1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	1551	PROTOTYPE: $;$
1069	ALIAS:	1552	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	1553	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	1554	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:	1555	PPCODE:
1074	{	1556	{
1075	dREQ;	1557	dREQ;
1076		1558
1077	req->type = ix;	1559	req->type = ix;
1078	req->fh = newSVsv (fh);	1560	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		1562
1081	REQ_SEND (req);	1563	REQ_SEND (req);
1082	}	1564	}
1083		1565
1084	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
1085	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)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:	1582	ALIAS:
1093	aio_read = REQ_READ	1583	aio_read = REQ_READ
1094	aio_write = REQ_WRITE	1584	aio_write = REQ_WRITE
1095	PROTOTYPE: $$$$$;$	1585	PROTOTYPE: $$$$$;$
1096	PPCODE:	1586	PPCODE:
1097	{	1587	{
1098	aio_req req;
1099	STRLEN svlen;	1588	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	1589	char *svptr = SvPVbyte (data, svlen);
		1590	UV len = SvUV (length);
1101		1591
1102	SvUPGRADE (data, SVt_PV);	1592	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	1593	SvPOK_on (data);
1104		1594
1105	if (dataoffset < 0)	1595	if (dataoffset < 0)
1106	dataoffset += svlen;	1596	dataoffset += svlen;
1107		1597
1108	if (dataoffset < 0 || dataoffset > svlen)	1598	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	1599	croak ("dataoffset outside of data scalar");
1110		1600
1111	if (ix == REQ_WRITE)	1601	if (ix == REQ_WRITE)
1112	{	1602	{
1113	/* write: check length and adjust. */	1603	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	1604	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	1605	len = svlen - dataoffset;
1116	}	1606	}
1117	else	1607	else
1118	{	1608	{
1119	/* read: grow scalar as necessary */	1609	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	1610	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	1611	}
1122		1612
1123	if (length < 0)	1613	if (len < 0)
1124	croak ("length must not be negative");	1614	croak ("length must not be negative");
1125		1615
1126	{	1616	{
1127	dREQ;	1617	dREQ;
1128		1618
1129	req->type = ix;	1619	req->type = ix;
1130	req->fh = newSVsv (fh);	1620	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1621	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	1622	: IoOFP (sv_2io (fh)));
		1623	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	1624	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	1625	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1626	req->ptr1 = (char *)svptr + dataoffset;
		1627	req->stroffset = dataoffset;
1137		1628
1138	if (!SvREADONLY (data))	1629	if (!SvREADONLY (data))
1139	{	1630	{
1140	SvREADONLY_on (data);	1631	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1632	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1633	}
1143		1634
1144	REQ_SEND;	1635	REQ_SEND;
1145	}	1636	}
1146	}	1637	}
1147		1638
1148	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
1149	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)
1150	SV * out_fh
1151	SV * in_fh
1152	UV in_offset
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$	1661	PROTOTYPE: $$$$;$
1156	PPCODE:	1662	PPCODE:
1157	{	1663	{
1158	dREQ;	1664	dREQ;
1159		1665
1160	req->type = REQ_SENDFILE;	1666	req->type = REQ_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1667	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	1669	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1670	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	1671	req->offs = SvVAL64 (in_offset);
1166	req->length = length;	1672	req->size = length;
1167		1673
1168	REQ_SEND;	1674	REQ_SEND;
1169	}	1675	}
1170		1676
1171	void	1677	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1678	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	1679	PROTOTYPE: $$$;$
1178	PPCODE:	1680	PPCODE:
1179	{	1681	{
1180	dREQ;	1682	dREQ;
1181		1683
1182	req->type = REQ_READAHEAD;	1684	req->type = REQ_READAHEAD;
1183	req->fh = newSVsv (fh);	1685	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1686	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	1687	req->offs = SvVAL64 (offset);
1186	req->length = length;	1688	req->size = length;
1187		1689
1188	REQ_SEND;	1690	REQ_SEND;
1189	}	1691	}
1190		1692
1191	void	1693	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1694	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1695	ALIAS:
1196	aio_stat = REQ_STAT	1696	aio_stat = REQ_STAT
1197	aio_lstat = REQ_LSTAT	1697	aio_lstat = REQ_LSTAT
1198	PPCODE:	1698	PPCODE:
1199	{	1699	{
1200	dREQ;	1700	dREQ;
1201		1701
1202	New (0, req->statdata, 1, Stat_t);	1702	req->ptr2 = malloc (sizeof (Stat_t));
1203	if (!req->statdata)	1703	if (!req->ptr2)
1204	{	1704	{
1205	req_free (req);	1705	req_destroy (req);
1206	croak ("out of memory during aio_req->statdata allocation");	1706	croak ("out of memory during aio_stat statdata allocation");
1207	}	1707	}
		1708
		1709	req->flags |= FLAG_PTR2_FREE;
		1710	req->sv1 = newSVsv (fh_or_path);
1208		1711
1209	if (SvPOK (fh_or_path))	1712	if (SvPOK (fh_or_path))
1210	{	1713	{
1211	req->type = ix;	1714	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1715	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1716	}
1215	else	1717	else
1216	{	1718	{
1217	req->type = REQ_FSTAT;	1719	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1720	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1721	}
1221		1722
1222	REQ_SEND;	1723	REQ_SEND;
1223	}	1724	}
1224		1725
1225	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
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1821	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1822	ALIAS:
1230	aio_unlink = REQ_UNLINK	1823	aio_unlink = REQ_UNLINK
1231	aio_rmdir = REQ_RMDIR	1824	aio_rmdir = REQ_RMDIR
1232	aio_readdir = REQ_READDIR	1825	aio_readdir = REQ_READDIR
1233	PPCODE:	1826	PPCODE:
1234	{	1827	{
1235	dREQ;	1828	dREQ;
1236		1829
1237	req->type = ix;	1830	req->type = ix;
1238	req->data = newSVsv (pathname);	1831	req->sv1 = newSVsv (pathname);
1239	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;
1240		1842
		1843	req->type = REQ_MKDIR;
		1844	req->sv1 = newSVsv (pathname);
		1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1846	req->mode = mode;
		1847
1241	REQ_SEND;	1848	REQ_SEND;
1242	}	1849	}
1243		1850
1244	void	1851	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1852	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1853	ALIAS:
1250	aio_link = REQ_LINK	1854	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK	1855	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME	1856	aio_rename = REQ_RENAME
1253	PPCODE:	1857	PPCODE:
1254	{	1858	{
1255	dREQ;	1859	dREQ;
1256		1860
1257	req->type = ix;	1861	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1862	req->sv2 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1863	req->ptr2 = SvPVbyte_nolen (req->sv2);
1260	req->data = newSVsv (newpath);	1864	req->sv1 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1262		1866
1263	REQ_SEND;	1867	REQ_SEND;
1264	}	1868	}
1265		1869
1266	void	1870	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1871	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1872	PPCODE:
1271	{	1873	{
1272	dREQ;	1874	dREQ;
1273		1875
1274	req->type = REQ_SLEEP;	1876	req->type = REQ_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1877	req->sv1 = newSVsv (pathname);
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1878	req->ptr1 = SvPVbyte_nolen (req->sv1);
1277		1879	req->mode = (mode_t)mode;
		1880	req->offs = dev;
		1881
1278	REQ_SEND;	1882	REQ_SEND;
1279	}	1883	}
1280		1884
1281	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
1282	aio_group (callback=&PL_sv_undef)	1898	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	1899	PROTOTYPE: ;$
1285	PPCODE:	1900	PPCODE:
1286	{	1901	{
1287	dREQ;	1902	dREQ;
1288		1903
1289	req->type = REQ_GROUP;	1904	req->type = REQ_GROUP;
		1905
1290	req_send (req);	1906	req_send (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1907	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	1908	}
1294		1909
1295	void	1910	void
1296	aio_nop (callback=&PL_sv_undef)	1911	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	1912	ALIAS:
		1913	aio_nop = REQ_NOP
		1914	aio_sync = REQ_SYNC
1298	PPCODE:	1915	PPCODE:
1299	{	1916	{
1300	dREQ;	1917	dREQ;
1301		1918
1302	req->type = REQ_NOP;	1919	req->type = ix;
1303		1920
1304	REQ_SEND;	1921	REQ_SEND;
1305	}	1922	}
1306		1923
1307	void	1924	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1925	aioreq_pri (int pri = 0)
		1926	PROTOTYPE: ;$
1309	CODE:	1927	CODE:
		1928	RETVAL = next_pri - PRI_BIAS;
		1929	if (items > 0)
		1930	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1931	if (pri < PRI_MIN) pri = PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1932	if (pri > PRI_MAX) pri = PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1933	next_pri = pri + PRI_BIAS;
		1934	}
		1935	OUTPUT:
		1936	RETVAL
		1937
		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;
1313		1945
1314	void	1946	void
1315	flush ()	1947	flush ()
1316	PROTOTYPE:	1948	PROTOTYPE:
1317	CODE:	1949	CODE:
…		…
1319	{	1951	{
1320	poll_wait ();	1952	poll_wait ();
1321	poll_cb ();	1953	poll_cb ();
1322	}	1954	}
1323		1955
1324	void	1956	int
1325	poll()	1957	poll()
1326	PROTOTYPE:	1958	PROTOTYPE:
1327	CODE:	1959	CODE:
1328	if (nreqs)
1329	{
1330	poll_wait ();	1960	poll_wait ();
1331	poll_cb ();	1961	RETVAL = poll_cb ();
1332	}	1962	OUTPUT:
		1963	RETVAL
1333		1964
1334	int	1965	int
1335	poll_fileno()	1966	poll_fileno()
1336	PROTOTYPE:	1967	PROTOTYPE:
1337	CODE:	1968	CODE:
…		…
1349		1980
1350	void	1981	void
1351	poll_wait()	1982	poll_wait()
1352	PROTOTYPE:	1983	PROTOTYPE:
1353	CODE:	1984	CODE:
1354	if (nreqs)
1355	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	}
1356		2022
1357	int	2023	int
1358	nreqs()	2024	nreqs()
1359	PROTOTYPE:	2025	PROTOTYPE:
1360	CODE:	2026	CODE:
1361	RETVAL = nreqs;	2027	RETVAL = nreqs;
1362	OUTPUT:	2028	OUTPUT:
1363	RETVAL	2029	RETVAL
1364		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
1365	PROTOTYPES: DISABLE	2057	PROTOTYPES: DISABLE
1366		2058
1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2059	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368		2060
1369	void	2061	void
…		…
1384	PPCODE:	2076	PPCODE:
1385	{	2077	{
1386	int i;	2078	int i;
1387	aio_req req;	2079	aio_req req;
1388		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
1389	if (grp->fd == 2)	2084	if (grp->int1 == 2)
1390	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");
1391		2086
1392	for (i = 1; i < items; ++i )	2087	for (i = 1; i < items; ++i )
1393	{	2088	{
1394	if (GIMME_V != G_VOID)	2089	if (GIMME_V != G_VOID)
…		…
1396		2091
1397	req = SvAIO_REQ (ST (i));	2092	req = SvAIO_REQ (ST (i));
1398		2093
1399	if (req)	2094	if (req)
1400	{	2095	{
1401	++grp->length;	2096	++grp->size;
1402	req->grp = grp;	2097	req->grp = grp;
1403		2098
1404	req->grp_prev = 0;	2099	req->grp_prev = 0;
1405	req->grp_next = grp->grp_first;	2100	req->grp_next = grp->grp_first;
1406		2101
…		…
1411	}	2106	}
1412	}	2107	}
1413	}	2108	}
1414		2109
1415	void	2110	void
		2111	cancel_subs (aio_req_ornot req)
		2112	CODE:
		2113	req_cancel_subs (req);
		2114
		2115	void
1416	result (aio_req grp, ...)	2116	result (aio_req grp, ...)
1417	CODE:	2117	CODE:
1418	{	2118	{
1419	int i;	2119	int i;
		2120	AV *av;
		2121
		2122	grp->errorno = errno;
		2123
1420	AV *av = newAV ();	2124	av = newAV ();
1421		2125
1422	for (i = 1; i < items; ++i )	2126	for (i = 1; i < items; ++i )
1423	av_push (av, newSVsv (ST (i)));	2127	av_push (av, newSVsv (ST (i)));
1424		2128
1425	SvREFCNT_dec (grp->data);	2129	SvREFCNT_dec (grp->sv1);
1426	grp->data = (SV *)av;	2130	grp->sv1 = (SV *)av;
1427	}	2131	}
		2132
		2133	void
		2134	errno (aio_req grp, int errorno = errno)
		2135	CODE:
		2136	grp->errorno = errorno;
1428		2137
1429	void	2138	void
1430	limit (aio_req grp, int limit)	2139	limit (aio_req grp, int limit)
1431	CODE:	2140	CODE:
1432	grp->fd2 = limit;	2141	grp->int2 = limit;
1433	aio_grp_feed (grp);	2142	aio_grp_feed (grp);
1434		2143
1435	void	2144	void
1436	feed (aio_req grp, SV *callback=&PL_sv_undef)	2145	feed (aio_req grp, SV *callback=&PL_sv_undef)
1437	CODE:	2146	CODE:
1438	{	2147	{
1439	SvREFCNT_dec (grp->fh2);	2148	SvREFCNT_dec (grp->sv2);
1440	grp->fh2 = newSVsv (callback);	2149	grp->sv2 = newSVsv (callback);
1441		2150
1442	if (grp->fd2 <= 0)	2151	if (grp->int2 <= 0)
1443	grp->fd2 = 2;	2152	grp->int2 = 2;
1444		2153
1445	aio_grp_feed (grp);	2154	aio_grp_feed (grp);
1446	}	2155	}
1447		2156

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