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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#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
32		68
33	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
34	# if __linux	70	# if __linux
35	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
36	# elif __freebsd	72	# elif __freebsd
…		…
43	# else	79	# else
44	# error sendfile support requested but not available	80	# error sendfile support requested but not available
45	# endif	81	# endif
46	#endif	82	#endif
47		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
48	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
49	#ifndef NAME_MAX	88	#ifndef NAME_MAX
50	# define NAME_MAX 4096	89	# define NAME_MAX 4096
51	#endif	90	#endif
52		91
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77
78	/* buffer size for various temporary buffers */	92	/* buffer size for various temporary buffers */
79	#define AIO_BUFSIZE 65536	93	#define AIO_BUFSIZE 65536
80		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
81	#define dBUF \	102	#define dBUF \
82	char *aio_buf; \	103	char *aio_buf; \
83	LOCK (wrklock); \	104	X_LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \	106	X_UNLOCK (wrklock); \
86	if (!aio_buf) \	107	if (!aio_buf) \
87	return -1;	108	return -1;
		109
		110	typedef SV SV8; /* byte-sv, used for argument-checking */
88		111
89	enum {	112	enum {
90	REQ_QUIT,	113	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
93	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		118	REQ_TRUNCATE, REQ_FTRUNCATE,
		119	REQ_UTIME, REQ_FUTIME,
		120	REQ_CHMOD, REQ_FCHMOD,
		121	REQ_CHOWN, REQ_FCHOWN,
95	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
97	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
99	REQ_GROUP, REQ_NOP,	126	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,	127	REQ_BUSY,
101	};	128	};
102		129
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
105		132
106	typedef struct aio_cb	133	typedef struct aio_cb
107	{	134	{
108	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
109		136
110	SV *data, *callback;	137	SV *callback;
111	SV *fh, *fh2;	138	SV *sv1, *sv2;
112	void *dataptr, *data2ptr;	139	void *ptr1, *ptr2;
113	Stat_t *statdata;
114	off_t offset;	140	off_t offs;
115	size_t length;	141	size_t size;
116	ssize_t result;	142	ssize_t result;
		143	double nv1, nv2;
117		144
118	STRLEN dataoffset;	145	STRLEN stroffset;
119	int type;	146	int type;
120	int fd, fd2;	147	int int1, int2, int3;
121	int errorno;	148	int errorno;
122	mode_t mode; /* open */	149	mode_t mode; /* open */
123		150
124	unsigned char flags;	151	unsigned char flags;
125	unsigned char pri;	152	unsigned char pri;
…		…
127	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;	156	} aio_cb;
130		157
131	enum {	158	enum {
132	FLAG_CANCELLED = 0x01,	159	FLAG_CANCELLED = 0x01, /* request was cancelled */
		160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
133	};	162	};
134		163
135	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
137		166
…		…
142	DEFAULT_PRI = 0,	171	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,	172	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};	174	};
146		175
		176	#define AIO_TICKS ((1000000 + 1023) >> 10)
		177
		178	static unsigned int max_poll_time = 0;
		179	static unsigned int max_poll_reqs = 0;
		180
		181	/* calculcate time difference in ~1/AIO_TICKS of a second */
		182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		183	{
		184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		186	}
		187
		188	static thread_t main_tid;
		189	static int main_sig;
		190	static int block_sig_level;
		191
		192	void block_sig ()
		193	{
		194	sigset_t ss;
		195
		196	if (block_sig_level++)
		197	return;
		198
		199	if (!main_sig)
		200	return;
		201
		202	sigemptyset (&ss);
		203	sigaddset (&ss, main_sig);
		204	pthread_sigmask (SIG_BLOCK, &ss, 0);
		205	}
		206
		207	void unblock_sig ()
		208	{
		209	sigset_t ss;
		210
		211	if (--block_sig_level)
		212	return;
		213
		214	if (!main_sig)
		215	return;
		216
		217	sigemptyset (&ss);
		218	sigaddset (&ss, main_sig);
		219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		220	}
		221
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;	222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148		223
149	static unsigned int started, wanted;	224	static unsigned int started, idle, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162		225
163	/* worker threads management */	226	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	227	static mutex_t wrklock = X_MUTEX_INIT;
165		228
166	typedef struct worker {	229	typedef struct worker {
167	/* locked by wrklock */	230	/* locked by wrklock */
168	struct worker *prev, *next;	231	struct worker *prev, *next;
169		232
170	pthread_t tid;	233	thread_t tid;
171		234
172	/* locked by reslock, reqlock or wrklock */	235	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */	236	aio_req req; /* currently processed request */
174	void *dbuf;	237	void *dbuf;
175	DIR *dirp;	238	DIR *dirp;
…		…
198	wrk->prev->next = wrk->next;	261	wrk->prev->next = wrk->next;
199		262
200	free (wrk);	263	free (wrk);
201	}	264	}
202		265
		266	static volatile unsigned int nreqs, nready, npending;
		267	static volatile unsigned int max_idle = 4;
		268	static volatile unsigned int max_outstanding = 0xffffffff;
		269	static int respipe_osf [2], respipe [2] = { -1, -1 };
		270
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	271	static mutex_t reslock = X_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	272	static mutex_t reqlock = X_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	273	static cond_t reqwait = X_COND_INIT;
		274
		275	#if WORDACCESS_UNSAFE
		276
		277	static unsigned int get_nready ()
		278	{
		279	unsigned int retval;
		280
		281	X_LOCK (reqlock);
		282	retval = nready;
		283	X_UNLOCK (reqlock);
		284
		285	return retval;
		286	}
		287
		288	static unsigned int get_npending ()
		289	{
		290	unsigned int retval;
		291
		292	X_LOCK (reslock);
		293	retval = npending;
		294	X_UNLOCK (reslock);
		295
		296	return retval;
		297	}
		298
		299	static unsigned int get_nthreads ()
		300	{
		301	unsigned int retval;
		302
		303	X_LOCK (wrklock);
		304	retval = started;
		305	X_UNLOCK (wrklock);
		306
		307	return retval;
		308	}
		309
		310	#else
		311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
		316	#endif
206		317
207	/*	318	/*
208	* a somewhat faster data structure might be nice, but	319	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns	320	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.	321	* per shift, the most expensive operation.
…		…
256	}	367	}
257		368
258	abort ();	369	abort ();
259	}	370	}
260		371
261	static int poll_cb (int max);	372	static int poll_cb ();
262	static void req_invoke (aio_req req);	373	static int req_invoke (aio_req req);
263	static void req_free (aio_req req);	374	static void req_destroy (aio_req req);
264	static void req_cancel (aio_req req);	375	static void req_cancel (aio_req req);
265		376
266	/* must be called at most once */	377	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
268	{	379	{
…		…
287	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	399	}
289		400
290	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
291	{	402	{
		403	block_sig ();
		404
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
293	{	406	{
294	int old_len = grp->length;	407	int old_len = grp->size;
295		408
296	if (grp->fh2 && SvOK (grp->fh2))	409	if (grp->sv2 && SvOK (grp->sv2))
297	{	410	{
298	dSP;	411	dSP;
299		412
300	ENTER;	413	ENTER;
301	SAVETMPS;	414	SAVETMPS;
302	PUSHMARK (SP);	415	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
304	PUTBACK;	417	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	419	SPAGAIN;
307	FREETMPS;	420	FREETMPS;
308	LEAVE;	421	LEAVE;
309	}	422	}
310		423
311	/* stop if no progress has been made */	424	/* stop if no progress has been made */
312	if (old_len == grp->length)	425	if (old_len == grp->size)
313	{	426	{
314	SvREFCNT_dec (grp->fh2);	427	SvREFCNT_dec (grp->sv2);
315	grp->fh2 = 0;	428	grp->sv2 = 0;
316	break;	429	break;
317	}	430	}
318	}	431	}
		432
		433	unblock_sig ();
319	}	434	}
320		435
321	static void aio_grp_dec (aio_req grp)	436	static void aio_grp_dec (aio_req grp)
322	{	437	{
323	--grp->length;	438	--grp->size;
324		439
325	/* call feeder, if applicable */	440	/* call feeder, if applicable */
326	aio_grp_feed (grp);	441	aio_grp_feed (grp);
327		442
328	/* finish, if done */	443	/* finish, if done */
329	if (!grp->length && grp->fd)	444	if (!grp->size && grp->int1)
330	{	445	{
		446	block_sig ();
		447
331	req_invoke (grp);	448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
332	req_free (grp);	455	req_destroy (grp);
		456	unblock_sig ();
333	}	457	}
334	}	458	}
335		459
336	static void poll_wait ()
337	{
338	fd_set rfd;
339
340	while (nreqs)
341	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)	460	static int req_invoke (aio_req req)
358	{	461	{
359	dSP;	462	dSP;
		463
		464	if (req->flags & FLAG_SV2_RO_OFF)
		465	SvREADONLY_off (req->sv2);
360		466
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{	468	{
363	ENTER;	469	ENTER;
364	SAVETMPS;	470	SAVETMPS;
…		…
372	SV *rv = &PL_sv_undef;	478	SV *rv = &PL_sv_undef;
373		479
374	if (req->result >= 0)	480	if (req->result >= 0)
375	{	481	{
376	int i;	482	int i;
377	char *buf = req->data2ptr;	483	char *buf = req->ptr2;
378	AV *av = newAV ();	484	AV *av = newAV ();
379		485
380	av_extend (av, req->result - 1);	486	av_extend (av, req->result - 1);
381		487
382	for (i = 0; i < req->result; ++i)	488	for (i = 0; i < req->result; ++i)
…		…
402	PUSHs (sv_2mortal (newSViv (req->result)));	508	PUSHs (sv_2mortal (newSViv (req->result)));
403	PUTBACK;	509	PUTBACK;
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
405	SPAGAIN;	511	SPAGAIN;
406		512
407	fh = SvREFCNT_inc (POPs);	513	fh = POPs;
408
409	PUSHMARK (SP);	514	PUSHMARK (SP);
410	XPUSHs (sv_2mortal (fh));	515	XPUSHs (fh);
411	}	516	}
412	break;	517	break;
413		518
414	case REQ_GROUP:	519	case REQ_GROUP:
415	req->fd = 2; /* mark group as finished */	520	req->int1 = 2; /* mark group as finished */
416		521
417	if (req->data)	522	if (req->sv1)
418	{	523	{
419	int i;	524	int i;
420	AV *av = (AV *)req->data;	525	AV *av = (AV *)req->sv1;
421		526
422	EXTEND (SP, AvFILL (av) + 1);	527	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	528	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	529	PUSHs (*av_fetch (av, i, 0));
425	}	530	}
…		…
427		532
428	case REQ_NOP:	533	case REQ_NOP:
429	case REQ_BUSY:	534	case REQ_BUSY:
430	break;	535	break;
431		536
		537	case REQ_READLINK:
		538	if (req->result > 0)
		539	{
		540	SvCUR_set (req->sv2, req->result);
		541	*SvEND (req->sv2) = 0;
		542	PUSHs (req->sv2);
		543	}
		544	break;
		545
		546	case REQ_STAT:
		547	case REQ_LSTAT:
		548	case REQ_FSTAT:
		549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		550	PL_laststatval = req->result;
		551	PL_statcache = *(Stat_t *)(req->ptr2);
		552	PUSHs (sv_2mortal (newSViv (req->result)));
		553	break;
		554
		555	case REQ_READ:
		556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		557	*SvEND (req->sv2) = 0;
		558	PUSHs (sv_2mortal (newSViv (req->result)));
		559	break;
		560
432	default:	561	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	562	PUSHs (sv_2mortal (newSViv (req->result)));
434	break;	563	break;
435	}	564	}
436		565
…		…
456	grp->grp_first = req->grp_next;	585	grp->grp_first = req->grp_next;
457		586
458	aio_grp_dec (grp);	587	aio_grp_dec (grp);
459	}	588	}
460		589
461	if (SvTRUE (ERRSV))	590	return !SvTRUE (ERRSV);
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	591	}
467		592
468	static void req_free (aio_req req)	593	static void req_destroy (aio_req req)
469	{	594	{
470	if (req->self)	595	if (req->self)
471	{	596	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
474	}	599	}
475		600
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
479	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481		604
482	if (req->type == REQ_READDIR)	605	if (req->flags & FLAG_PTR2_FREE)
483	free (req->data2ptr);	606	free (req->ptr2);
484		607
485	Safefree (req);	608	Safefree (req);
486	}	609	}
487		610
488	static void req_cancel_subs (aio_req grp)	611	static void req_cancel_subs (aio_req grp)
…		…
490	aio_req sub;	613	aio_req sub;
491		614
492	if (grp->type != REQ_GROUP)	615	if (grp->type != REQ_GROUP)
493	return;	616	return;
494		617
495	SvREFCNT_dec (grp->fh2);	618	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	619	grp->sv2 = 0;
497		620
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	621	for (sub = grp->grp_first; sub; sub = sub->grp_next)
499	req_cancel (sub);	622	req_cancel (sub);
500	}	623	}
501		624
…		…
504	req->flags |= FLAG_CANCELLED;	627	req->flags |= FLAG_CANCELLED;
505		628
506	req_cancel_subs (req);	629	req_cancel_subs (req);
507	}	630	}
508		631
509	static int poll_cb (int max)	632	#ifdef USE_SOCKETS_AS_HANDLES
510	{	633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
511	dSP;	634	#else
512	int count = 0;	635	# define TO_SOCKET(x) (x)
513	int do_croak = 0;	636	#endif
514	aio_req req;
515		637
516	for (;;)	638	static void
		639	create_respipe ()
		640	{
		641	int old_readfd = respipe [0];
		642
		643	if (respipe [1] >= 0)
		644	respipe_close (TO_SOCKET (respipe [1]));
		645
		646	#ifdef _WIN32
		647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		648	#else
		649	if (pipe (respipe))
		650	#endif
		651	croak ("unable to initialize result pipe");
		652
		653	if (old_readfd >= 0)
517	{	654	{
518	while (max <= 0 || count < max)	655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
519	{	656	croak ("unable to initialize result pipe(2)");
520	LOCK (reslock);
521	req = reqq_shift (&res_queue);
522		657
523	if (req)	658	respipe_close (respipe [0]);
524	{	659	respipe [0] = old_readfd;
525	--npending;
526
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}
550	else
551	{
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}
572
573	if (nreqs <= max_outstanding)
574	break;
575
576	poll_wait ();
577
578	max = 0;
579	}	660	}
580		661
581	return count;	662	#ifdef _WIN32
582	}	663	int arg = 1;
		664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		666	#else
		667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		669	#endif
		670	croak ("unable to initialize result pipe(3)");
583		671
584	static void *aio_proc(void *arg);	672	respipe_osf [0] = TO_SOCKET (respipe [0]);
		673	respipe_osf [1] = TO_SOCKET (respipe [1]);
		674	}
		675
		676	X_THREAD_PROC (aio_proc);
585		677
586	static void start_thread (void)	678	static void start_thread (void)
587	{	679	{
588	sigset_t fullsigset, oldsigset;
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));	680	worker *wrk = calloc (1, sizeof (worker));
592		681
593	if (!wrk)	682	if (!wrk)
594	croak ("unable to allocate worker thread data");	683	croak ("unable to allocate worker thread data");
595		684
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);	685	X_LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604		686
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
606	{	688	{
607	wrk->prev = &wrk_first;	689	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;	690	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;	691	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;	692	wrk_first.next = wrk;
611	++started;	693	++started;
612	}	694	}
613	else	695	else
614	free (wrk);	696	free (wrk);
615		697
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);	698	X_UNLOCK (wrklock);
		699	}
		700
		701	static void maybe_start_thread ()
		702	{
		703	if (get_nthreads () >= wanted)
		704	return;
		705
		706	/* todo: maybe use idle here, but might be less exact */
		707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		708	return;
		709
		710	start_thread ();
618	}	711	}
619		712
620	static void req_send (aio_req req)	713	static void req_send (aio_req req)
621	{	714	{
622	while (started < wanted && nreqs >= started)	715	block_sig ();
623	start_thread ();
624		716
625	++nreqs;	717	++nreqs;
626		718
627	LOCK (reqlock);	719	X_LOCK (reqlock);
628	++nready;	720	++nready;
629	reqq_push (&req_queue, req);	721	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);	722	X_COND_SIGNAL (reqwait);
631	UNLOCK (reqlock);	723	X_UNLOCK (reqlock);
		724
		725	unblock_sig ();
		726
		727	maybe_start_thread ();
632	}	728	}
633		729
634	static void end_thread (void)	730	static void end_thread (void)
635	{	731	{
636	aio_req req;	732	aio_req req;
…		…
638	Newz (0, req, 1, aio_cb);	734	Newz (0, req, 1, aio_cb);
639		735
640	req->type = REQ_QUIT;	736	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;	737	req->pri = PRI_MAX + PRI_BIAS;
642		738
643	req_send (req);	739	X_LOCK (reqlock);
		740	reqq_push (&req_queue, req);
		741	X_COND_SIGNAL (reqwait);
		742	X_UNLOCK (reqlock);
		743
		744	X_LOCK (wrklock);
		745	--started;
		746	X_UNLOCK (wrklock);
		747	}
		748
		749	static void set_max_idle (int nthreads)
		750	{
		751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		752	max_idle = nthreads <= 0 ? 1 : nthreads;
		753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
644	}	754	}
645		755
646	static void min_parallel (int nthreads)	756	static void min_parallel (int nthreads)
647	{	757	{
648	if (wanted < nthreads)	758	if (wanted < nthreads)
649	wanted = nthreads;	759	wanted = nthreads;
650	}	760	}
651		761
652	static void max_parallel (int nthreads)	762	static void max_parallel (int nthreads)
653	{	763	{
654	int cur = started;
655
656	if (wanted > nthreads)	764	if (wanted > nthreads)
657	wanted = nthreads;	765	wanted = nthreads;
658		766
659	while (cur > wanted)	767	while (started > wanted)
		768	end_thread ();
		769	}
		770
		771	static void poll_wait ()
		772	{
		773	fd_set rfd;
		774
		775	while (nreqs)
660	{	776	{
		777	int size;
		778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		779	size = res_queue.size;
		780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		781
		782	if (size)
		783	return;
		784
661	end_thread ();	785	maybe_start_thread ();
662	cur--;	786
		787	FD_ZERO (&rfd);
		788	FD_SET (respipe [0], &rfd);
		789
		790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
663	}	791	}
		792	}
664		793
665	while (started > wanted)	794	static int poll_cb ()
		795	{
		796	dSP;
		797	int count = 0;
		798	int maxreqs = max_poll_reqs;
		799	int do_croak = 0;
		800	struct timeval tv_start, tv_now;
		801	aio_req req;
		802
		803	if (max_poll_time)
		804	gettimeofday (&tv_start, 0);
		805
		806	block_sig ();
		807
		808	for (;;)
666	{	809	{
		810	for (;;)
		811	{
		812	maybe_start_thread ();
		813
		814	X_LOCK (reslock);
		815	req = reqq_shift (&res_queue);
		816
		817	if (req)
		818	{
		819	--npending;
		820
		821	if (!res_queue.size)
		822	{
		823	/* read any signals sent by the worker threads */
		824	char buf [4];
		825	while (respipe_read (respipe [0], buf, 4) == 4)
		826	;
		827	}
		828	}
		829
		830	X_UNLOCK (reslock);
		831
		832	if (!req)
		833	break;
		834
		835	--nreqs;
		836
		837	if (req->type == REQ_GROUP && req->size)
		838	{
		839	req->int1 = 1; /* mark request as delayed */
		840	continue;
		841	}
		842	else
		843	{
		844	if (!req_invoke (req))
		845	{
		846	req_destroy (req);
		847	unblock_sig ();
		848	croak (0);
		849	}
		850
		851	count++;
		852	}
		853
		854	req_destroy (req);
		855
		856	if (maxreqs && !--maxreqs)
		857	break;
		858
		859	if (max_poll_time)
		860	{
		861	gettimeofday (&tv_now, 0);
		862
		863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		864	break;
		865	}
		866	}
		867
		868	if (nreqs <= max_outstanding)
		869	break;
		870
667	poll_wait ();	871	poll_wait ();
668	poll_cb (0);	872
		873	++maxreqs;
669	}	874	}
670	}
671		875
672	static void create_pipe ()	876	unblock_sig ();
673	{	877	return count;
674	if (pipe (respipe))
675	croak ("unable to initialize result pipe");
676
677	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678	croak ("cannot set result pipe to nonblocking mode");
679
680	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681	croak ("cannot set result pipe to nonblocking mode");
682	}	878	}
683		879
684	/*****************************************************************************/	880	/*****************************************************************************/
685	/* work around various missing functions */	881	/* work around various missing functions */
686		882
…		…
691	/*	887	/*
692	* make our pread/pwrite safe against themselves, but not against	888	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,	889	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.	890	* but that's your problem, not mine.
695	*/	891	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	892	static mutex_t preadwritelock = X_MUTEX_INIT;
697		893
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{	895	{
700	ssize_t res;	896	ssize_t res;
701	off_t ooffset;	897	off_t ooffset;
702		898
703	LOCK (preadwritelock);	899	X_LOCK (preadwritelock);
704	ooffset = lseek (fd, 0, SEEK_CUR);	900	ooffset = lseek (fd, 0, SEEK_CUR);
705	lseek (fd, offset, SEEK_SET);	901	lseek (fd, offset, SEEK_SET);
706	res = read (fd, buf, count);	902	res = read (fd, buf, count);
707	lseek (fd, ooffset, SEEK_SET);	903	lseek (fd, ooffset, SEEK_SET);
708	UNLOCK (preadwritelock);	904	X_UNLOCK (preadwritelock);
709		905
710	return res;	906	return res;
711	}	907	}
712		908
713	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714	{	910	{
715	ssize_t res;	911	ssize_t res;
716	off_t ooffset;	912	off_t ooffset;
717		913
718	LOCK (preadwritelock);	914	X_LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);	915	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);	916	lseek (fd, offset, SEEK_SET);
721	res = write (fd, buf, count);	917	res = write (fd, buf, count);
722	lseek (fd, offset, SEEK_SET);	918	lseek (fd, offset, SEEK_SET);
723	UNLOCK (preadwritelock);	919	X_UNLOCK (preadwritelock);
724		920
725	return res;	921	return res;
726	}	922	}
		923	#endif
		924
		925	#ifndef HAVE_FUTIMES
		926
		927	# define utimes(path,times) aio_utimes (path, times)
		928	# define futimes(fd,times) aio_futimes (fd, times)
		929
		930	int aio_utimes (const char *filename, const struct timeval times[2])
		931	{
		932	if (times)
		933	{
		934	struct utimbuf buf;
		935
		936	buf.actime = times[0].tv_sec;
		937	buf.modtime = times[1].tv_sec;
		938
		939	return utime (filename, &buf);
		940	}
		941	else
		942	return utime (filename, 0);
		943	}
		944
		945	int aio_futimes (int fd, const struct timeval tv[2])
		946	{
		947	errno = ENOSYS;
		948	return -1;
		949	}
		950
727	#endif	951	#endif
728		952
729	#if !HAVE_FDATASYNC	953	#if !HAVE_FDATASYNC
730	# define fdatasync fsync	954	# define fdatasync fsync
731	#endif	955	#endif
…		…
733	#if !HAVE_READAHEAD	957	#if !HAVE_READAHEAD
734	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735		959
736	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737	{	961	{
		962	size_t todo = count;
738	dBUF;	963	dBUF;
739		964
740	while (count > 0)	965	while (todo > 0)
741	{	966	{
742	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
743		968
744	pread (fd, aio_buf, len, offset);	969	pread (fd, aio_buf, len, offset);
745	offset += len;	970	offset += len;
746	count -= len;	971	todo -= len;
747	}	972	}
748		973
749	errno = 0;	974	errno = 0;
		975	return count;
750	}	976	}
751		977
752	#endif	978	#endif
753		979
754	#if !HAVE_READDIR_R	980	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r	981	# define readdir_r aio_readdir_r
756		982
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	983	static mutex_t readdirlock = X_MUTEX_INIT;
758		984
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
760	{	986	{
761	struct dirent *e;	987	X_DIRENT *e;
762	int errorno;	988	int errorno;
763		989
764	LOCK (readdirlock);	990	X_LOCK (readdirlock);
765		991
766	e = readdir (dirp);	992	e = readdir (dirp);
767	errorno = errno;	993	errorno = errno;
768		994
769	if (e)	995	if (e)
…		…
772	strcpy (ent->d_name, e->d_name);	998	strcpy (ent->d_name, e->d_name);
773	}	999	}
774	else	1000	else
775	*res = 0;	1001	*res = 0;
776		1002
777	UNLOCK (readdirlock);	1003	X_UNLOCK (readdirlock);
778		1004
779	errno = errorno;	1005	errno = errorno;
780	return e ? 0 : -1;	1006	return e ? 0 : -1;
781	}	1007	}
782	#endif	1008	#endif
…		…
878	static void scandir_ (aio_req req, worker *self)	1104	static void scandir_ (aio_req req, worker *self)
879	{	1105	{
880	DIR *dirp;	1106	DIR *dirp;
881	union	1107	union
882	{	1108	{
883	struct dirent d;	1109	X_DIRENT d;
884	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
885	} *u;	1111	} *u;
886	struct dirent *entp;	1112	X_DIRENT *entp;
887	char *name, *names;	1113	char *name, *names;
888	int memlen = 4096;	1114	int memlen = 4096;
889	int memofs = 0;	1115	int memofs = 0;
890	int res = 0;	1116	int res = 0;
891	int errorno;
892		1117
893	LOCK (wrklock);	1118	X_LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);	1119	self->dirp = dirp = opendir (req->ptr1);
895	self->dbuf = u = malloc (sizeof (*u));	1120	self->dbuf = u = malloc (sizeof (*u));
		1121	req->flags |= FLAG_PTR2_FREE;
896	req->data2ptr = names = malloc (memlen);	1122	req->ptr2 = names = malloc (memlen);
897	UNLOCK (wrklock);	1123	X_UNLOCK (wrklock);
898		1124
899	if (dirp && u && names)	1125	if (dirp && u && names)
900	for (;;)	1126	for (;;)
901	{	1127	{
902	errno = 0;	1128	errno = 0;
…		…
914	res++;	1140	res++;
915		1141
916	while (memofs + len > memlen)	1142	while (memofs + len > memlen)
917	{	1143	{
918	memlen *= 2;	1144	memlen *= 2;
919	LOCK (wrklock);	1145	X_LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);	1146	req->ptr2 = names = realloc (names, memlen);
921	UNLOCK (wrklock);	1147	X_UNLOCK (wrklock);
922		1148
923	if (!names)	1149	if (!names)
924	break;	1150	break;
925	}	1151	}
926		1152
…		…
935	req->result = res;	1161	req->result = res;
936	}	1162	}
937		1163
938	/*****************************************************************************/	1164	/*****************************************************************************/
939		1165
940	static void *aio_proc (void *thr_arg)	1166	X_THREAD_PROC (aio_proc)
941	{	1167	{
		1168	{//D
942	aio_req req;	1169	aio_req req;
943	int type;	1170	struct timespec ts;
944	worker *self = (worker *)thr_arg;	1171	worker *self = (worker *)thr_arg;
945		1172
946	do	1173	/* try to distribute timeouts somewhat randomly */
		1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1175
		1176	for (;;)
947	{	1177	{
		1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1179
948	LOCK (reqlock);	1180	X_LOCK (reqlock);
949		1181
950	for (;;)	1182	for (;;)
951	{	1183	{
952	self->req = req = reqq_shift (&req_queue);	1184	self->req = req = reqq_shift (&req_queue);
953		1185
954	if (req)	1186	if (req)
955	break;	1187	break;
956		1188
957	pthread_cond_wait (&reqwait, &reqlock);	1189	++idle;
		1190
		1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1192	== ETIMEDOUT)
		1193	{
		1194	if (idle > max_idle)
		1195	{
		1196	--idle;
		1197	X_UNLOCK (reqlock);
		1198	X_LOCK (wrklock);
		1199	--started;
		1200	X_UNLOCK (wrklock);
		1201	goto quit;
		1202	}
		1203
		1204	/* we are allowed to idle, so do so without any timeout */
		1205	X_COND_WAIT (reqwait, reqlock);
		1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1207	}
		1208
		1209	--idle;
958	}	1210	}
959		1211
960	--nready;	1212	--nready;
961		1213
962	UNLOCK (reqlock);	1214	X_UNLOCK (reqlock);
963		1215
964	errno = 0; /* strictly unnecessary */	1216	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966		1217
967	if (!(req->flags & FLAG_CANCELLED))	1218	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)	1219	switch (req->type)
969	{	1220	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1221	case REQ_READ: req->result = req->offs >= 0
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1222	? pread (req->int1, req->ptr1, req->size, req->offs)
		1223	: read (req->int1, req->ptr1, req->size); break;
		1224	case REQ_WRITE: req->result = req->offs >= 0
		1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1226	: write (req->int1, req->ptr1, req->size); break;
972		1227
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
975		1230
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
979		1234
		1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1241
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;	1243	case REQ_CLOSE: req->result = close (req->int1); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
987		1252
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;	1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
990	case REQ_READDIR: scandir_ (req, self); break;	1255	case REQ_READDIR: scandir_ (req, self); break;
991		1256
992	case REQ_BUSY:	1257	case REQ_BUSY:
		1258	#ifdef _WIN32
		1259	Sleep (req->nv1 * 1000.);
		1260	#else
993	{	1261	{
994	struct timeval tv;	1262	struct timeval tv;
995		1263
996	tv.tv_sec = req->fd;	1264	tv.tv_sec = req->nv1;
997	tv.tv_usec = req->fd2;	1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
998		1266
999	req->result = select (0, 0, 0, 0, &tv);	1267	req->result = select (0, 0, 0, 0, &tv);
1000	}	1268	}
		1269	#endif
		1270	break;
		1271
		1272	case REQ_UTIME:
		1273	case REQ_FUTIME:
		1274	{
		1275	struct timeval tv[2];
		1276	struct timeval *times;
		1277
		1278	if (req->nv1 != -1. || req->nv2 != -1.)
		1279	{
		1280	tv[0].tv_sec = req->nv1;
		1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1282	tv[1].tv_sec = req->nv2;
		1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1284
		1285	times = tv;
		1286	}
		1287	else
		1288	times = 0;
		1289
		1290
		1291	req->result = req->type == REQ_FUTIME
		1292	? futimes (req->int1, times)
		1293	: utimes (req->ptr1, times);
		1294	}
1001		1295
1002	case REQ_GROUP:	1296	case REQ_GROUP:
1003	case REQ_NOP:	1297	case REQ_NOP:
		1298	break;
		1299
1004	case REQ_QUIT:	1300	case REQ_QUIT:
1005	break;	1301	goto quit;
1006		1302
1007	default:	1303	default:
1008	req->result = ENOSYS;	1304	req->result = -1;
1009	break;	1305	break;
1010	}	1306	}
1011		1307
1012	req->errorno = errno;	1308	req->errorno = errno;
1013		1309
1014	LOCK (reslock);	1310	X_LOCK (reslock);
1015		1311
1016	++npending;	1312	++npending;
1017		1313
1018	if (!reqq_push (&res_queue, req))	1314	if (!reqq_push (&res_queue, req))
		1315	{
1019	/* write a dummy byte to the pipe so fh becomes ready */	1316	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);	1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1318
		1319	/* optionally signal the main thread asynchronously */
		1320	if (main_sig)
		1321	pthread_kill (main_tid, main_sig);
		1322	}
1021		1323
1022	self->req = 0;	1324	self->req = 0;
1023	worker_clear (self);	1325	worker_clear (self);
1024		1326
1025	UNLOCK (reslock);	1327	X_UNLOCK (reslock);
1026	}	1328	}
1027	while (type != REQ_QUIT);
1028		1329
		1330	quit:
1029	LOCK (wrklock);	1331	X_LOCK (wrklock);
1030	worker_free (self);	1332	worker_free (self);
1031	UNLOCK (wrklock);	1333	X_UNLOCK (wrklock);
1032		1334
1033	return 0;	1335	return 0;
		1336	}//D
1034	}	1337	}
1035		1338
1036	/*****************************************************************************/	1339	/*****************************************************************************/
1037		1340
1038	static void atfork_prepare (void)	1341	static void atfork_prepare (void)
1039	{	1342	{
1040	LOCK (wrklock);	1343	X_LOCK (wrklock);
1041	LOCK (reqlock);	1344	X_LOCK (reqlock);
1042	LOCK (reslock);	1345	X_LOCK (reslock);
1043	#if !HAVE_PREADWRITE	1346	#if !HAVE_PREADWRITE
1044	LOCK (preadwritelock);	1347	X_LOCK (preadwritelock);
1045	#endif	1348	#endif
1046	#if !HAVE_READDIR_R	1349	#if !HAVE_READDIR_R
1047	LOCK (readdirlock);	1350	X_LOCK (readdirlock);
1048	#endif	1351	#endif
1049	}	1352	}
1050		1353
1051	static void atfork_parent (void)	1354	static void atfork_parent (void)
1052	{	1355	{
1053	#if !HAVE_READDIR_R	1356	#if !HAVE_READDIR_R
1054	UNLOCK (readdirlock);	1357	X_UNLOCK (readdirlock);
1055	#endif	1358	#endif
1056	#if !HAVE_PREADWRITE	1359	#if !HAVE_PREADWRITE
1057	UNLOCK (preadwritelock);	1360	X_UNLOCK (preadwritelock);
1058	#endif	1361	#endif
1059	UNLOCK (reslock);	1362	X_UNLOCK (reslock);
1060	UNLOCK (reqlock);	1363	X_UNLOCK (reqlock);
1061	UNLOCK (wrklock);	1364	X_UNLOCK (wrklock);
1062	}	1365	}
1063		1366
1064	static void atfork_child (void)	1367	static void atfork_child (void)
1065	{	1368	{
1066	aio_req prv;	1369	aio_req prv;
1067		1370
1068	while (prv = reqq_shift (&req_queue))	1371	while (prv = reqq_shift (&req_queue))
1069	req_free (prv);	1372	req_destroy (prv);
1070		1373
1071	while (prv = reqq_shift (&res_queue))	1374	while (prv = reqq_shift (&res_queue))
1072	req_free (prv);	1375	req_destroy (prv);
1073		1376
1074	while (wrk_first.next != &wrk_first)	1377	while (wrk_first.next != &wrk_first)
1075	{	1378	{
1076	worker *wrk = wrk_first.next;	1379	worker *wrk = wrk_first.next;
1077		1380
1078	if (wrk->req)	1381	if (wrk->req)
1079	req_free (wrk->req);	1382	req_destroy (wrk->req);
1080		1383
1081	worker_clear (wrk);	1384	worker_clear (wrk);
1082	worker_free (wrk);	1385	worker_free (wrk);
1083	}	1386	}
1084		1387
1085	started = 0;	1388	started = 0;
		1389	idle = 0;
1086	nreqs = 0;	1390	nreqs = 0;
		1391	nready = 0;
		1392	npending = 0;
1087		1393
1088	close (respipe [0]);
1089	close (respipe [1]);
1090	create_pipe ();	1394	create_respipe ();
1091		1395
1092	atfork_parent ();	1396	atfork_parent ();
1093	}	1397	}
1094		1398
1095	#define dREQ \	1399	#define dREQ \
…		…
1118	PROTOTYPES: ENABLE	1422	PROTOTYPES: ENABLE
1119		1423
1120	BOOT:	1424	BOOT:
1121	{	1425	{
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	1426	HV *stash = gv_stashpv ("IO::AIO", 1);
		1427
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1433	#ifdef _WIN32
		1434	X_MUTEX_CHECK (wrklock);
		1435	X_MUTEX_CHECK (reslock);
		1436	X_MUTEX_CHECK (reqlock);
		1437	X_MUTEX_CHECK (reqwait);
		1438	X_MUTEX_CHECK (preadwritelock);
		1439	X_MUTEX_CHECK (readdirlock);
1126		1440
1127	create_pipe ();	1441	X_COND_CHECK (reqwait);
		1442	#else
		1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1445	#endif
		1446
		1447	create_respipe ();
		1448
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1129	}	1450	}
		1451
		1452	void
		1453	max_poll_reqs (int nreqs)
		1454	PROTOTYPE: $
		1455	CODE:
		1456	max_poll_reqs = nreqs;
		1457
		1458	void
		1459	max_poll_time (double nseconds)
		1460	PROTOTYPE: $
		1461	CODE:
		1462	max_poll_time = nseconds * AIO_TICKS;
1130		1463
1131	void	1464	void
1132	min_parallel (int nthreads)	1465	min_parallel (int nthreads)
1133	PROTOTYPE: $	1466	PROTOTYPE: $
1134		1467
1135	void	1468	void
1136	max_parallel (int nthreads)	1469	max_parallel (int nthreads)
1137	PROTOTYPE: $	1470	PROTOTYPE: $
		1471
		1472	void
		1473	max_idle (int nthreads)
		1474	PROTOTYPE: $
		1475	CODE:
		1476	set_max_idle (nthreads);
1138		1477
1139	int	1478	int
1140	max_outstanding (int maxreqs)	1479	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	1480	PROTOTYPE: $
1142	CODE:	1481	CODE:
…		…
1144	max_outstanding = maxreqs;	1483	max_outstanding = maxreqs;
1145	OUTPUT:	1484	OUTPUT:
1146	RETVAL	1485	RETVAL
1147		1486
1148	void	1487	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	int flags
1152	int mode
1153	SV * callback
1154	PROTOTYPE: $$$;$	1489	PROTOTYPE: $$$;$
1155	PPCODE:	1490	PPCODE:
1156	{	1491	{
1157	dREQ;	1492	dREQ;
1158		1493
1159	req->type = REQ_OPEN;	1494	req->type = REQ_OPEN;
1160	req->data = newSVsv (pathname);	1495	req->sv1 = newSVsv (pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	1496	req->ptr1 = SvPVbyte_nolen (req->sv1);
1162	req->fd = flags;	1497	req->int1 = flags;
1163	req->mode = mode;	1498	req->mode = mode;
1164		1499
1165	REQ_SEND;	1500	REQ_SEND;
1166	}	1501	}
1167		1502
1168	void	1503	void
1169	aio_close (fh,callback=&PL_sv_undef)	1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$	1505	PROTOTYPE: $;$
1173	ALIAS:	1506	ALIAS:
1174	aio_close = REQ_CLOSE	1507	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	1508	aio_fsync = REQ_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	1509	aio_fdatasync = REQ_FDATASYNC
1177	PPCODE:	1510	PPCODE:
1178	{	1511	{
1179	dREQ;	1512	dREQ;
1180		1513
1181	req->type = ix;	1514	req->type = ix;
1182	req->fh = newSVsv (fh);	1515	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1184		1517
1185	REQ_SEND (req);	1518	REQ_SEND (req);
1186	}	1519	}
1187		1520
1188	void	1521	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1190	SV * fh
1191	UV offset
1192	UV length
1193	SV * data
1194	UV dataoffset
1195	SV * callback
1196	ALIAS:	1523	ALIAS:
1197	aio_read = REQ_READ	1524	aio_read = REQ_READ
1198	aio_write = REQ_WRITE	1525	aio_write = REQ_WRITE
1199	PROTOTYPE: $$$$$;$	1526	PROTOTYPE: $$$$$;$
1200	PPCODE:	1527	PPCODE:
1201	{	1528	{
1202	aio_req req;
1203	STRLEN svlen;	1529	STRLEN svlen;
1204	char *svptr = SvPVbyte (data, svlen);	1530	char *svptr = SvPVbyte (data, svlen);
		1531	UV len = SvUV (length);
1205		1532
1206	SvUPGRADE (data, SVt_PV);	1533	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);	1534	SvPOK_on (data);
1208		1535
1209	if (dataoffset < 0)	1536	if (dataoffset < 0)
1210	dataoffset += svlen;	1537	dataoffset += svlen;
1211		1538
1212	if (dataoffset < 0 || dataoffset > svlen)	1539	if (dataoffset < 0 || dataoffset > svlen)
1213	croak ("data offset outside of string");	1540	croak ("dataoffset outside of data scalar");
1214		1541
1215	if (ix == REQ_WRITE)	1542	if (ix == REQ_WRITE)
1216	{	1543	{
1217	/* write: check length and adjust. */	1544	/* write: check length and adjust. */
1218	if (length < 0 || length + dataoffset > svlen)	1545	if (!SvOK (length) || len + dataoffset > svlen)
1219	length = svlen - dataoffset;	1546	len = svlen - dataoffset;
1220	}	1547	}
1221	else	1548	else
1222	{	1549	{
1223	/* read: grow scalar as necessary */	1550	/* read: grow scalar as necessary */
1224	svptr = SvGROW (data, length + dataoffset);	1551	svptr = SvGROW (data, len + dataoffset + 1);
1225	}	1552	}
1226		1553
1227	if (length < 0)	1554	if (len < 0)
1228	croak ("length must not be negative");	1555	croak ("length must not be negative");
1229		1556
1230	{	1557	{
1231	dREQ;	1558	dREQ;
1232		1559
1233	req->type = ix;	1560	req->type = ix;
1234	req->fh = newSVsv (fh);	1561	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1236	: IoOFP (sv_2io (fh)));	1563	: IoOFP (sv_2io (fh)));
		1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	1565	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	1566	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1567	req->ptr1 = (char *)svptr + dataoffset;
		1568	req->stroffset = dataoffset;
1241		1569
1242	if (!SvREADONLY (data))	1570	if (!SvREADONLY (data))
1243	{	1571	{
1244	SvREADONLY_on (data);	1572	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1573	req->flags |= FLAG_SV2_RO_OFF;
1246	}	1574	}
1247		1575
1248	REQ_SEND;	1576	REQ_SEND;
1249	}	1577	}
1250	}	1578	}
1251		1579
1252	void	1580	void
		1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1582	PROTOTYPE: $$;$
		1583	PPCODE:
		1584	{
		1585	SV *data;
		1586	dREQ;
		1587
		1588	data = newSV (NAME_MAX);
		1589	SvPOK_on (data);
		1590
		1591	req->type = REQ_READLINK;
		1592	req->sv1 = newSVsv (path);
		1593	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1594	req->sv2 = data;
		1595	req->ptr1 = SvPVbyte_nolen (data);
		1596
		1597	REQ_SEND;
		1598	}
		1599
		1600	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1254	SV * out_fh
1255	SV * in_fh
1256	UV in_offset
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$	1602	PROTOTYPE: $$$$;$
1260	PPCODE:	1603	PPCODE:
1261	{	1604	{
1262	dREQ;	1605	dREQ;
1263		1606
1264	req->type = REQ_SENDFILE;	1607	req->type = REQ_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1608	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1267	req->fh2 = newSVsv (in_fh);	1610	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1269	req->offset = in_offset;	1612	req->offs = SvVAL64 (in_offset);
1270	req->length = length;	1613	req->size = length;
1271		1614
1272	REQ_SEND;	1615	REQ_SEND;
1273	}	1616	}
1274		1617
1275	void	1618	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$	1620	PROTOTYPE: $$$;$
1282	PPCODE:	1621	PPCODE:
1283	{	1622	{
1284	dREQ;	1623	dREQ;
1285		1624
1286	req->type = REQ_READAHEAD;	1625	req->type = REQ_READAHEAD;
1287	req->fh = newSVsv (fh);	1626	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1289	req->offset = offset;	1628	req->offs = SvVAL64 (offset);
1290	req->length = length;	1629	req->size = length;
1291		1630
1292	REQ_SEND;	1631	REQ_SEND;
1293	}	1632	}
1294		1633
1295	void	1634	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	1636	ALIAS:
1300	aio_stat = REQ_STAT	1637	aio_stat = REQ_STAT
1301	aio_lstat = REQ_LSTAT	1638	aio_lstat = REQ_LSTAT
1302	PPCODE:	1639	PPCODE:
1303	{	1640	{
1304	dREQ;	1641	dREQ;
1305		1642
1306	New (0, req->statdata, 1, Stat_t);	1643	req->ptr2 = malloc (sizeof (Stat_t));
1307	if (!req->statdata)	1644	if (!req->ptr2)
1308	{	1645	{
1309	req_free (req);	1646	req_destroy (req);
1310	croak ("out of memory during aio_req->statdata allocation");	1647	croak ("out of memory during aio_stat statdata allocation");
1311	}	1648	}
		1649
		1650	req->flags |= FLAG_PTR2_FREE;
		1651	req->sv1 = newSVsv (fh_or_path);
1312		1652
1313	if (SvPOK (fh_or_path))	1653	if (SvPOK (fh_or_path))
1314	{	1654	{
1315	req->type = ix;	1655	req->type = ix;
1316	req->data = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);	1656	req->ptr1 = SvPVbyte_nolen (req->sv1);
1318	}	1657	}
1319	else	1658	else
1320	{	1659	{
1321	req->type = REQ_FSTAT;	1660	req->type = REQ_FSTAT;
1322	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}	1662	}
1325		1663
1326	REQ_SEND;	1664	REQ_SEND;
1327	}	1665	}
1328		1666
1329	void	1667	void
		1668	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1669	PPCODE:
		1670	{
		1671	dREQ;
		1672
		1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1675	req->sv1 = newSVsv (fh_or_path);
		1676
		1677	if (SvPOK (fh_or_path))
		1678	{
		1679	req->type = REQ_UTIME;
		1680	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1681	}
		1682	else
		1683	{
		1684	req->type = REQ_FUTIME;
		1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1686	}
		1687
		1688	REQ_SEND;
		1689	}
		1690
		1691	void
		1692	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1693	PPCODE:
		1694	{
		1695	dREQ;
		1696
		1697	req->sv1 = newSVsv (fh_or_path);
		1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1699
		1700	if (SvPOK (fh_or_path))
		1701	{
		1702	req->type = REQ_TRUNCATE;
		1703	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1704	}
		1705	else
		1706	{
		1707	req->type = REQ_FTRUNCATE;
		1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1709	}
		1710
		1711	REQ_SEND;
		1712	}
		1713
		1714	void
		1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1716	PPCODE:
		1717	{
		1718	dREQ;
		1719
		1720	req->mode = mode;
		1721	req->sv1 = newSVsv (fh_or_path);
		1722
		1723	if (SvPOK (fh_or_path))
		1724	{
		1725	req->type = REQ_CHMOD;
		1726	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1727	}
		1728	else
		1729	{
		1730	req->type = REQ_FCHMOD;
		1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1732	}
		1733
		1734	REQ_SEND;
		1735	}
		1736
		1737	void
		1738	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1739	PPCODE:
		1740	{
		1741	dREQ;
		1742
		1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1745	req->sv1 = newSVsv (fh_or_path);
		1746
		1747	if (SvPOK (fh_or_path))
		1748	{
		1749	req->type = REQ_CHOWN;
		1750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1751	}
		1752	else
		1753	{
		1754	req->type = REQ_FCHOWN;
		1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1756	}
		1757
		1758	REQ_SEND;
		1759	}
		1760
		1761	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	1763	ALIAS:
1334	aio_unlink = REQ_UNLINK	1764	aio_unlink = REQ_UNLINK
1335	aio_rmdir = REQ_RMDIR	1765	aio_rmdir = REQ_RMDIR
1336	aio_readdir = REQ_READDIR	1766	aio_readdir = REQ_READDIR
1337	PPCODE:	1767	PPCODE:
1338	{	1768	{
1339	dREQ;	1769	dREQ;
1340		1770
1341	req->type = ix;	1771	req->type = ix;
1342	req->data = newSVsv (pathname);	1772	req->sv1 = newSVsv (pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1773	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1774
		1775	REQ_SEND;
		1776	}
		1777
		1778	void
		1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1780	PPCODE:
		1781	{
		1782	dREQ;
1344		1783
		1784	req->type = REQ_MKDIR;
		1785	req->sv1 = newSVsv (pathname);
		1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1787	req->mode = mode;
		1788
1345	REQ_SEND;	1789	REQ_SEND;
1346	}	1790	}
1347		1791
1348	void	1792	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:	1794	ALIAS:
1354	aio_link = REQ_LINK	1795	aio_link = REQ_LINK
1355	aio_symlink = REQ_SYMLINK	1796	aio_symlink = REQ_SYMLINK
1356	aio_rename = REQ_RENAME	1797	aio_rename = REQ_RENAME
1357	PPCODE:	1798	PPCODE:
1358	{	1799	{
1359	dREQ;	1800	dREQ;
1360		1801
1361	req->type = ix;	1802	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1803	req->sv2 = newSVsv (oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1804	req->ptr2 = SvPVbyte_nolen (req->sv2);
1364	req->data = newSVsv (newpath);	1805	req->sv1 = newSVsv (newpath);
1365	req->dataptr = SvPVbyte_nolen (req->data);	1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1366		1807
1367	REQ_SEND;	1808	REQ_SEND;
1368	}	1809	}
1369		1810
1370	void	1811	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	1813	PPCODE:
1375	{	1814	{
1376	dREQ;	1815	dREQ;
		1816
		1817	req->type = REQ_MKNOD;
		1818	req->sv1 = newSVsv (pathname);
		1819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1820	req->mode = (mode_t)mode;
		1821	req->offs = dev;
		1822
		1823	REQ_SEND;
		1824	}
		1825
		1826	void
		1827	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1828	PPCODE:
		1829	{
		1830	dREQ;
1377		1831
1378	req->type = REQ_BUSY;	1832	req->type = REQ_BUSY;
1379	req->fd = delay < 0. ? 0 : delay;	1833	req->nv1 = delay < 0. ? 0. : delay;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1381		1834
1382	REQ_SEND;	1835	REQ_SEND;
1383	}	1836	}
1384		1837
1385	void	1838	void
1386	aio_group (callback=&PL_sv_undef)	1839	aio_group (SV *callback=&PL_sv_undef)
1387	SV * callback
1388	PROTOTYPE: ;$	1840	PROTOTYPE: ;$
1389	PPCODE:	1841	PPCODE:
1390	{	1842	{
1391	dREQ;	1843	dREQ;
1392		1844
1393	req->type = REQ_GROUP;	1845	req->type = REQ_GROUP;
		1846
1394	req_send (req);	1847	req_send (req);
1395
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1397	}	1849	}
1398		1850
1399	void	1851	void
1400	aio_nop (callback=&PL_sv_undef)	1852	aio_nop (SV *callback=&PL_sv_undef)
1401	SV * callback
1402	PPCODE:	1853	PPCODE:
1403	{	1854	{
1404	dREQ;	1855	dREQ;
1405		1856
1406	req->type = REQ_NOP;	1857	req->type = REQ_NOP;
…		…
1435	PROTOTYPE:	1886	PROTOTYPE:
1436	CODE:	1887	CODE:
1437	while (nreqs)	1888	while (nreqs)
1438	{	1889	{
1439	poll_wait ();	1890	poll_wait ();
1440	poll_cb (0);	1891	poll_cb ();
1441	}	1892	}
1442		1893
1443	void	1894	int
1444	poll()	1895	poll()
1445	PROTOTYPE:	1896	PROTOTYPE:
1446	CODE:	1897	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();	1898	poll_wait ();
1450	poll_cb (0);	1899	RETVAL = poll_cb ();
1451	}	1900	OUTPUT:
		1901	RETVAL
1452		1902
1453	int	1903	int
1454	poll_fileno()	1904	poll_fileno()
1455	PROTOTYPE:	1905	PROTOTYPE:
1456	CODE:	1906	CODE:
…		…
1460		1910
1461	int	1911	int
1462	poll_cb(...)	1912	poll_cb(...)
1463	PROTOTYPE:	1913	PROTOTYPE:
1464	CODE:	1914	CODE:
1465	RETVAL = poll_cb (0);	1915	RETVAL = poll_cb ();
1466	OUTPUT:
1467	RETVAL
1468
1469	int
1470	poll_some(int max = 0)
1471	PROTOTYPE: $
1472	CODE:
1473	RETVAL = poll_cb (max);
1474	OUTPUT:	1916	OUTPUT:
1475	RETVAL	1917	RETVAL
1476		1918
1477	void	1919	void
1478	poll_wait()	1920	poll_wait()
1479	PROTOTYPE:	1921	PROTOTYPE:
1480	CODE:	1922	CODE:
1481	if (nreqs)
1482	poll_wait ();	1923	poll_wait ();
		1924
		1925	void
		1926	setsig (int signum = SIGIO)
		1927	PROTOTYPE: ;$
		1928	CODE:
		1929	{
		1930	if (block_sig_level)
		1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1932
		1933	X_LOCK (reslock);
		1934	main_tid = pthread_self ();
		1935	main_sig = signum;
		1936	X_UNLOCK (reslock);
		1937
		1938	if (main_sig && npending)
		1939	pthread_kill (main_tid, main_sig);
		1940	}
		1941
		1942	void
		1943	aio_block (SV *cb)
		1944	PROTOTYPE: &
		1945	PPCODE:
		1946	{
		1947	int count;
		1948
		1949	block_sig ();
		1950	PUSHMARK (SP);
		1951	PUTBACK;
		1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1953	SPAGAIN;
		1954	unblock_sig ();
		1955
		1956	if (SvTRUE (ERRSV))
		1957	croak (0);
		1958
		1959	XSRETURN (count);
		1960	}
1483		1961
1484	int	1962	int
1485	nreqs()	1963	nreqs()
1486	PROTOTYPE:	1964	PROTOTYPE:
1487	CODE:	1965	CODE:
…		…
1491		1969
1492	int	1970	int
1493	nready()	1971	nready()
1494	PROTOTYPE:	1972	PROTOTYPE:
1495	CODE:	1973	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1974	RETVAL = get_nready ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1975	OUTPUT:
1500	RETVAL	1976	RETVAL
1501		1977
1502	int	1978	int
1503	npending()	1979	npending()
1504	PROTOTYPE:	1980	PROTOTYPE:
1505	CODE:	1981	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);
1507	RETVAL = npending;	1982	RETVAL = get_npending ();
		1983	OUTPUT:
		1984	RETVAL
		1985
		1986	int
		1987	nthreads()
		1988	PROTOTYPE:
		1989	CODE:
		1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1991	RETVAL = started;
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1509	OUTPUT:	1993	OUTPUT:
1510	RETVAL	1994	RETVAL
1511		1995
1512	PROTOTYPES: DISABLE	1996	PROTOTYPES: DISABLE
1513		1997
…		…
1531	PPCODE:	2015	PPCODE:
1532	{	2016	{
1533	int i;	2017	int i;
1534	aio_req req;	2018	aio_req req;
1535		2019
		2020	if (main_sig && !block_sig_level)
		2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2022
1536	if (grp->fd == 2)	2023	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		2025
1539	for (i = 1; i < items; ++i )	2026	for (i = 1; i < items; ++i )
1540	{	2027	{
1541	if (GIMME_V != G_VOID)	2028	if (GIMME_V != G_VOID)
…		…
1543		2030
1544	req = SvAIO_REQ (ST (i));	2031	req = SvAIO_REQ (ST (i));
1545		2032
1546	if (req)	2033	if (req)
1547	{	2034	{
1548	++grp->length;	2035	++grp->size;
1549	req->grp = grp;	2036	req->grp = grp;
1550		2037
1551	req->grp_prev = 0;	2038	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;	2039	req->grp_next = grp->grp_first;
1553		2040
…		…
1576	av = newAV ();	2063	av = newAV ();
1577		2064
1578	for (i = 1; i < items; ++i )	2065	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	2066	av_push (av, newSVsv (ST (i)));
1580		2067
1581	SvREFCNT_dec (grp->data);	2068	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	2069	grp->sv1 = (SV *)av;
1583	}	2070	}
1584		2071
1585	void	2072	void
1586	errno (aio_req grp, int errorno = errno)	2073	errno (aio_req grp, int errorno = errno)
1587	CODE:	2074	CODE:
1588	grp->errorno = errorno;	2075	grp->errorno = errorno;
1589		2076
1590	void	2077	void
1591	limit (aio_req grp, int limit)	2078	limit (aio_req grp, int limit)
1592	CODE:	2079	CODE:
1593	grp->fd2 = limit;	2080	grp->int2 = limit;
1594	aio_grp_feed (grp);	2081	aio_grp_feed (grp);
1595		2082
1596	void	2083	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	2084	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	2085	CODE:
1599	{	2086	{
1600	SvREFCNT_dec (grp->fh2);	2087	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	2088	grp->sv2 = newSVsv (callback);
1602		2089
1603	if (grp->fd2 <= 0)	2090	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	2091	grp->int2 = 2;
1605		2092
1606	aio_grp_feed (grp);	2093	aio_grp_feed (grp);
1607	}	2094	}
1608		2095

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