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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.69 by root, Tue Oct 24 11:57:30 2006 UTC vs.
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC

1	#if __linux	1	#include "xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define SIGIO 0
		21	typedef Direntry_t X_DIRENT;
		22	#undef malloc
		23	#undef free
		24
		25	// perl overrides all those nice win32 functions
		26	# undef open
		27	# undef read
		28	# undef write
		29	# undef stat
		30	# undef fstat
		31	# define lstat stat
		32	# undef truncate
		33	# undef ftruncate
		34	# undef open
		35	# undef close
		36	# undef unlink
		37	# undef rmdir
		38	# undef rename
		39	# undef lseek
		40
		41	# define chown(a,b,c) (errno = ENOSYS, -1)
		42	# define fchown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchmod(a,b) (errno = ENOSYS, -1)
		44	# define symlink(a,b) (errno = ENOSYS, -1)
		45	# define readlink(a,b,c) (errno = ENOSYS, -1)
		46	# define mknod(a,b,c) (errno = ENOSYS, -1)
		47	# define truncate(a,b) (errno = ENOSYS, -1)
		48	# define ftruncate(fd,o) chsize ((fd), (o))
		49	# define fsync(fd) _commit (fd)
		50	# define opendir(fd) (errno = ENOSYS, 0)
		51	# define readdir(fd) (errno = ENOSYS, -1)
		52	# define closedir(fd) (errno = ENOSYS, -1)
		53	# define mkdir(a,b) mkdir (a)
		54
		55	#else
		56
		57	# include "autoconf/config.h"
		58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	typedef struct dirent X_DIRENT;
		64
		65	#endif
28		66
29	#if HAVE_SENDFILE	67	#if HAVE_SENDFILE
30	# if __linux	68	# if __linux
31	# include <sys/sendfile.h>	69	# include <sys/sendfile.h>
32	# elif __freebsd	70	# elif __freebsd
…		…
39	# else	77	# else
40	# error sendfile support requested but not available	78	# error sendfile support requested but not available
41	# endif	79	# endif
42	#endif	80	#endif
43		81
		82	/* number of seconds after which idle threads exit */
		83	#define IDLE_TIMEOUT 10
		84
44	/* used for struct dirent, AIX doesn't provide it */	85	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	86	#ifndef NAME_MAX
46	# define NAME_MAX 4096	87	# define NAME_MAX 4096
47	#endif	88	#endif
48		89
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 */	90	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	91	#define AIO_BUFSIZE 65536
59		92
		93	/* use NV for 32 bit perls as it allows larger offsets */
		94	#if IVSIZE >= 8
		95	# define SvVAL64 SvIV
		96	#else
		97	# define SvVAL64 SvNV
		98	#endif
		99
60	#define dBUF \	100	#define dBUF \
		101	char *aio_buf; \
		102	X_LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		104	X_UNLOCK (wrklock); \
62	if (!aio_buf) \	105	if (!aio_buf) \
63	return -1;	106	return -1;
64		107
65	#define fBUF free (aio_buf)	108	typedef SV SV8; /* byte-sv, used for argument-checking */
66		109
67	enum {	110	enum {
68	REQ_QUIT,	111	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	112	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	113	REQ_READ, REQ_WRITE,
71	REQ_SENDFILE,	114	REQ_READAHEAD, REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		116	REQ_TRUNCATE, REQ_FTRUNCATE,
		117	REQ_UTIME, REQ_FUTIME,
		118	REQ_CHMOD, REQ_FCHMOD,
		119	REQ_CHOWN, REQ_FCHOWN,
73	REQ_FSYNC, REQ_FDATASYNC,	120	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	122	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	124	REQ_GROUP, REQ_NOP,
78	REQ_BUSY,	125	REQ_BUSY,
79	};	126	};
80		127
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	128	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
83		130
84	typedef struct aio_cb	131	typedef struct aio_cb
85	{	132	{
86	struct aio_cb *volatile next;	133	struct aio_cb *volatile next;
87		134
88	SV *data, *callback;	135	SV *callback;
89	SV *fh, *fh2;	136	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	137	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	138	off_t offs;
93	size_t length;	139	size_t size;
94	ssize_t result;	140	ssize_t result;
		141	double nv1, nv2;
95		142
96	STRLEN dataoffset;	143	STRLEN stroffset;
97	int type;	144	int type;
98	int fd, fd2;	145	int int1, int2, int3;
99	int errorno;	146	int errorno;
100	mode_t mode; /* open */	147	mode_t mode; /* open */
101		148
102	unsigned char flags;	149	unsigned char flags;
103	unsigned char pri;	150	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	152	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	154	} aio_cb;
108		155
109	enum {	156	enum {
110	FLAG_CANCELLED = 0x01,	157	FLAG_CANCELLED = 0x01, /* request was cancelled */
		158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
111	};	160	};
112		161
113	typedef aio_cb *aio_req;	162	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	163	typedef aio_cb *aio_req_ornot;
115		164
…		…
120	DEFAULT_PRI = 0,	169	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	170	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};	172	};
124		173
		174	#define AIO_TICKS ((1000000 + 1023) >> 10)
		175
		176	static unsigned int max_poll_time = 0;
		177	static unsigned int max_poll_reqs = 0;
		178
		179	/* calculcate time difference in ~1/AIO_TICKS of a second */
		180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		181	{
		182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		184	}
		185
		186	static thread_t main_tid;
		187	static int main_sig;
		188	static int block_sig_level;
		189
		190	void block_sig ()
		191	{
		192	sigset_t ss;
		193
		194	if (block_sig_level++)
		195	return;
		196
		197	if (!main_sig)
		198	return;
		199
		200	sigemptyset (&ss);
		201	sigaddset (&ss, main_sig);
		202	pthread_sigmask (SIG_BLOCK, &ss, 0);
		203	}
		204
		205	void unblock_sig ()
		206	{
		207	sigset_t ss;
		208
		209	if (--block_sig_level)
		210	return;
		211
		212	if (!main_sig)
		213	return;
		214
		215	sigemptyset (&ss);
		216	sigaddset (&ss, main_sig);
		217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		218	}
		219
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;	220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126		221
127	static int started, wanted;	222	static unsigned int started, idle, wanted;
128	static volatile int nreqs;	223
129	static int max_outstanding = 1<<30;	224	/* worker threads management */
		225	static mutex_t wrklock = X_MUTEX_INIT;
		226
		227	typedef struct worker {
		228	/* locked by wrklock */
		229	struct worker *prev, *next;
		230
		231	thread_t tid;
		232
		233	/* locked by reslock, reqlock or wrklock */
		234	aio_req req; /* currently processed request */
		235	void *dbuf;
		236	DIR *dirp;
		237	} worker;
		238
		239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		240
		241	static void worker_clear (worker *wrk)
		242	{
		243	if (wrk->dirp)
		244	{
		245	closedir (wrk->dirp);
		246	wrk->dirp = 0;
		247	}
		248
		249	if (wrk->dbuf)
		250	{
		251	free (wrk->dbuf);
		252	wrk->dbuf = 0;
		253	}
		254	}
		255
		256	static void worker_free (worker *wrk)
		257	{
		258	wrk->next->prev = wrk->prev;
		259	wrk->prev->next = wrk->next;
		260
		261	free (wrk);
		262	}
		263
		264	static volatile unsigned int nreqs, nready, npending;
		265	static volatile unsigned int max_idle = 4;
		266	static volatile unsigned int max_outstanding = 0xffffffff;
130	static int respipe [2];	267	static int respipe [2];
131		268
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	269	static mutex_t reslock = X_MUTEX_INIT;
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	270	static mutex_t reqlock = X_MUTEX_INIT;
		271	static cond_t reqwait = X_COND_INIT;
		272
		273	#if WORDACCESS_UNSAFE
		274
		275	static unsigned int get_nready ()
		276	{
		277	unsigned int retval;
		278
		279	X_LOCK (reqlock);
		280	retval = nready;
		281	X_UNLOCK (reqlock);
		282
		283	return retval;
		284	}
		285
		286	static unsigned int get_npending ()
		287	{
		288	unsigned int retval;
		289
		290	X_LOCK (reslock);
		291	retval = npending;
		292	X_UNLOCK (reslock);
		293
		294	return retval;
		295	}
		296
		297	static unsigned int get_nthreads ()
		298	{
		299	unsigned int retval;
		300
		301	X_LOCK (wrklock);
		302	retval = started;
		303	X_UNLOCK (wrklock);
		304
		305	return retval;
		306	}
		307
134	#else	308	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	309
		310	# define get_nready() nready
		311	# define get_npending() npending
		312	# define get_nthreads() started
		313
136	#endif	314	#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		315
142	/*	316	/*
143	* a somewhat faster data structure might be nice, but	317	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns	318	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.	319	* per shift, the most expensive operation.
…		…
191	}	365	}
192		366
193	abort ();	367	abort ();
194	}	368	}
195		369
		370	static int poll_cb ();
196	static void req_invoke (aio_req req);	371	static int req_invoke (aio_req req);
		372	static void req_destroy (aio_req req);
197	static void req_free (aio_req req);	373	static void req_cancel (aio_req req);
198		374
199	/* must be called at most once */	375	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	376	static SV *req_sv (aio_req req, const char *klass)
201	{	377	{
202	if (!req->self)	378	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	397	}
222		398
223	static void aio_grp_feed (aio_req grp)	399	static void aio_grp_feed (aio_req grp)
224	{	400	{
		401	block_sig ();
		402
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
226	{	404	{
227	int old_len = grp->length;	405	int old_len = grp->size;
228		406
229	if (grp->fh2 && SvOK (grp->fh2))	407	if (grp->sv2 && SvOK (grp->sv2))
230	{	408	{
231	dSP;	409	dSP;
232		410
233	ENTER;	411	ENTER;
234	SAVETMPS;	412	SAVETMPS;
235	PUSHMARK (SP);	413	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	415	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	417	SPAGAIN;
240	FREETMPS;	418	FREETMPS;
241	LEAVE;	419	LEAVE;
242	}	420	}
243		421
244	/* stop if no progress has been made */	422	/* stop if no progress has been made */
245	if (old_len == grp->length)	423	if (old_len == grp->size)
246	{	424	{
247	SvREFCNT_dec (grp->fh2);	425	SvREFCNT_dec (grp->sv2);
248	grp->fh2 = 0;	426	grp->sv2 = 0;
249	break;	427	break;
250	}	428	}
251	}	429	}
		430
		431	unblock_sig ();
252	}	432	}
253		433
254	static void aio_grp_dec (aio_req grp)	434	static void aio_grp_dec (aio_req grp)
255	{	435	{
256	--grp->length;	436	--grp->size;
257		437
258	/* call feeder, if applicable */	438	/* call feeder, if applicable */
259	aio_grp_feed (grp);	439	aio_grp_feed (grp);
260		440
261	/* finish, if done */	441	/* finish, if done */
262	if (!grp->length && grp->fd)	442	if (!grp->size && grp->int1)
263	{	443	{
		444	block_sig ();
		445
264	req_invoke (grp);	446	if (!req_invoke (grp))
		447	{
		448	req_destroy (grp);
		449	unblock_sig ();
		450	croak (0);
		451	}
		452
265	req_free (grp);	453	req_destroy (grp);
		454	unblock_sig ();
266	}	455	}
267	}	456	}
268		457
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)	458	static int req_invoke (aio_req req)
295	{	459	{
296	dSP;	460	dSP;
		461
		462	if (req->flags & FLAG_SV2_RO_OFF)
		463	SvREADONLY_off (req->sv2);
297		464
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{	466	{
300	errno = req->errorno;
301
302	ENTER;	467	ENTER;
303	SAVETMPS;	468	SAVETMPS;
304	PUSHMARK (SP);	469	PUSHMARK (SP);
305	EXTEND (SP, 1);	470	EXTEND (SP, 1);
306		471
…		…
310	{	475	{
311	SV *rv = &PL_sv_undef;	476	SV *rv = &PL_sv_undef;
312		477
313	if (req->result >= 0)	478	if (req->result >= 0)
314	{	479	{
		480	int i;
315	char *buf = req->data2ptr;	481	char *buf = req->ptr2;
316	AV *av = newAV ();	482	AV *av = newAV ();
317		483
318	while (req->result)	484	av_extend (av, req->result - 1);
		485
		486	for (i = 0; i < req->result; ++i)
319	{	487	{
320	SV *sv = newSVpv (buf, 0);	488	SV *sv = newSVpv (buf, 0);
321		489
322	av_push (av, sv);	490	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	491	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	492	}
326		493
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	494	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	495	}
329		496
…		…
339	PUSHs (sv_2mortal (newSViv (req->result)));	506	PUSHs (sv_2mortal (newSViv (req->result)));
340	PUTBACK;	507	PUTBACK;
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342	SPAGAIN;	509	SPAGAIN;
343		510
344	fh = SvREFCNT_inc (POPs);	511	fh = POPs;
345
346	PUSHMARK (SP);	512	PUSHMARK (SP);
347	XPUSHs (sv_2mortal (fh));	513	XPUSHs (fh);
348	}	514	}
349	break;	515	break;
350		516
351	case REQ_GROUP:	517	case REQ_GROUP:
352	req->fd = 2; /* mark group as finished */	518	req->int1 = 2; /* mark group as finished */
353		519
354	if (req->data)	520	if (req->sv1)
355	{	521	{
356	int i;	522	int i;
357	AV *av = (AV *)req->data;	523	AV *av = (AV *)req->sv1;
358		524
359	EXTEND (SP, AvFILL (av) + 1);	525	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	526	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	527	PUSHs (*av_fetch (av, i, 0));
362	}	528	}
…		…
364		530
365	case REQ_NOP:	531	case REQ_NOP:
366	case REQ_BUSY:	532	case REQ_BUSY:
367	break;	533	break;
368		534
		535	case REQ_READLINK:
		536	if (req->result > 0)
		537	{
		538	SvCUR_set (req->sv2, req->result);
		539	*SvEND (req->sv2) = 0;
		540	PUSHs (req->sv2);
		541	}
		542	break;
		543
		544	case REQ_STAT:
		545	case REQ_LSTAT:
		546	case REQ_FSTAT:
		547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		548	PL_laststatval = req->result;
		549	PL_statcache = *(Stat_t *)(req->ptr2);
		550	PUSHs (sv_2mortal (newSViv (req->result)));
		551	break;
		552
		553	case REQ_READ:
		554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		555	*SvEND (req->sv2) = 0;
		556	PUSHs (sv_2mortal (newSViv (req->result)));
		557	break;
		558
369	default:	559	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	560	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	561	break;
372	}	562	}
373		563
		564	errno = req->errorno;
374		565
375	PUTBACK;	566	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	567	call_sv (req->callback, G_VOID | G_EVAL);
377	SPAGAIN;	568	SPAGAIN;
378		569
…		…
392	grp->grp_first = req->grp_next;	583	grp->grp_first = req->grp_next;
393		584
394	aio_grp_dec (grp);	585	aio_grp_dec (grp);
395	}	586	}
396		587
397	if (SvTRUE (ERRSV))	588	return !SvTRUE (ERRSV);
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	589	}
403		590
404	static void req_free (aio_req req)	591	static void req_destroy (aio_req req)
405	{	592	{
406	if (req->self)	593	if (req->self)
407	{	594	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	595	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	596	SvREFCNT_dec (req->self);
410	}	597	}
411		598
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	599	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	600	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	601	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		602
418	if (req->type == REQ_READDIR && req->result >= 0)	603	if (req->flags & FLAG_PTR2_FREE)
419	free (req->data2ptr);	604	free (req->ptr2);
420		605
421	Safefree (req);	606	Safefree (req);
422	}	607	}
423		608
		609	static void req_cancel_subs (aio_req grp)
		610	{
		611	aio_req sub;
		612
		613	if (grp->type != REQ_GROUP)
		614	return;
		615
		616	SvREFCNT_dec (grp->sv2);
		617	grp->sv2 = 0;
		618
		619	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		620	req_cancel (sub);
		621	}
		622
424	static void req_cancel (aio_req req)	623	static void req_cancel (aio_req req)
425	{	624	{
426	req->flags |= FLAG_CANCELLED;	625	req->flags |= FLAG_CANCELLED;
427		626
428	if (req->type == REQ_GROUP)	627	req_cancel_subs (req);
		628	}
		629
		630	X_THREAD_PROC (aio_proc);
		631
		632	static void start_thread (void)
		633	{
		634	worker *wrk = calloc (1, sizeof (worker));
		635
		636	if (!wrk)
		637	croak ("unable to allocate worker thread data");
		638
		639	X_LOCK (wrklock);
		640
		641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
429	{	642	{
430	aio_req sub;	643	wrk->prev = &wrk_first;
		644	wrk->next = wrk_first.next;
		645	wrk_first.next->prev = wrk;
		646	wrk_first.next = wrk;
		647	++started;
		648	}
		649	else
		650	free (wrk);
431		651
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	652	X_UNLOCK (wrklock);
433	req_cancel (sub);	653	}
		654
		655	static void maybe_start_thread ()
		656	{
		657	if (get_nthreads () >= wanted)
		658	return;
		659
		660	/* todo: maybe use idle here, but might be less exact */
		661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		662	return;
		663
		664	start_thread ();
		665	}
		666
		667	static void req_send (aio_req req)
		668	{
		669	block_sig ();
		670
		671	++nreqs;
		672
		673	X_LOCK (reqlock);
		674	++nready;
		675	reqq_push (&req_queue, req);
		676	X_COND_SIGNAL (reqwait);
		677	X_UNLOCK (reqlock);
		678
		679	unblock_sig ();
		680
		681	maybe_start_thread ();
		682	}
		683
		684	static void end_thread (void)
		685	{
		686	aio_req req;
		687
		688	Newz (0, req, 1, aio_cb);
		689
		690	req->type = REQ_QUIT;
		691	req->pri = PRI_MAX + PRI_BIAS;
		692
		693	X_LOCK (reqlock);
		694	reqq_push (&req_queue, req);
		695	X_COND_SIGNAL (reqwait);
		696	X_UNLOCK (reqlock);
		697
		698	X_LOCK (wrklock);
		699	--started;
		700	X_UNLOCK (wrklock);
		701	}
		702
		703	static void set_max_idle (int nthreads)
		704	{
		705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		706	max_idle = nthreads <= 0 ? 1 : nthreads;
		707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		708	}
		709
		710	static void min_parallel (int nthreads)
		711	{
		712	if (wanted < nthreads)
		713	wanted = nthreads;
		714	}
		715
		716	static void max_parallel (int nthreads)
		717	{
		718	if (wanted > nthreads)
		719	wanted = nthreads;
		720
		721	while (started > wanted)
		722	end_thread ();
		723	}
		724
		725	static void poll_wait ()
		726	{
		727	fd_set rfd;
		728
		729	while (nreqs)
		730	{
		731	int size;
		732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		733	size = res_queue.size;
		734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		735
		736	if (size)
		737	return;
		738
		739	maybe_start_thread ();
		740
		741	FD_ZERO(&rfd);
		742	FD_SET(respipe [0], &rfd);
		743
		744	select (respipe [0] + 1, &rfd, 0, 0, 0);
434	}	745	}
435	}	746	}
436		747
437	static int poll_cb ()	748	static int poll_cb ()
438	{	749	{
439	dSP;	750	dSP;
440	int count = 0;	751	int count = 0;
		752	int maxreqs = max_poll_reqs;
441	int do_croak = 0;	753	int do_croak = 0;
		754	struct timeval tv_start, tv_now;
442	aio_req req;	755	aio_req req;
		756
		757	if (max_poll_time)
		758	gettimeofday (&tv_start, 0);
		759
		760	block_sig ();
443		761
444	for (;;)	762	for (;;)
445	{	763	{
446	pthread_mutex_lock (&reslock);	764	for (;;)
447	req = reqq_shift (&res_queue);
448
449	if (req)
450	{	765	{
		766	maybe_start_thread ();
		767
		768	X_LOCK (reslock);
		769	req = reqq_shift (&res_queue);
		770
451	if (!res_queue.size)	771	if (req)
452	{	772	{
		773	--npending;
		774
		775	if (!res_queue.size)
		776	{
453	/* read any signals sent by the worker threads */	777	/* read any signals sent by the worker threads */
454	char buf [32];	778	char buf [4];
455	while (read (respipe [0], buf, 32) == 32)	779	while (read (respipe [0], buf, 4) == 4)
		780	;
456	;	781	}
		782	}
		783
		784	X_UNLOCK (reslock);
		785
		786	if (!req)
		787	break;
		788
		789	--nreqs;
		790
		791	if (req->type == REQ_GROUP && req->size)
		792	{
		793	req->int1 = 1; /* mark request as delayed */
		794	continue;
		795	}
		796	else
		797	{
		798	if (!req_invoke (req))
		799	{
		800	req_destroy (req);
		801	unblock_sig ();
		802	croak (0);
		803	}
		804
		805	count++;
		806	}
		807
		808	req_destroy (req);
		809
		810	if (maxreqs && !--maxreqs)
		811	break;
		812
		813	if (max_poll_time)
		814	{
		815	gettimeofday (&tv_now, 0);
		816
		817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		818	break;
457	}	819	}
458	}	820	}
459		821
460	pthread_mutex_unlock (&reslock);	822	if (nreqs <= max_outstanding)
461
462	if (!req)
463	break;	823	break;
464		824
465	--nreqs;	825	poll_wait ();
466		826
467	if (req->type == REQ_QUIT)	827	++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	}	828	}
496		829
		830	unblock_sig ();
497	return count;	831	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	}	832	}
594		833
595	/*****************************************************************************/	834	/*****************************************************************************/
596	/* work around various missing functions */	835	/* work around various missing functions */
597		836
…		…
602	/*	841	/*
603	* make our pread/pwrite safe against themselves, but not against	842	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,	843	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.	844	* but that's your problem, not mine.
606	*/	845	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	846	static mutex_t preadwritelock = X_MUTEX_INIT;
608		847
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{	849	{
611	ssize_t res;	850	ssize_t res;
612	off_t ooffset;	851	off_t ooffset;
613		852
614	pthread_mutex_lock (&preadwritelock);	853	X_LOCK (preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);	854	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);	855	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);	856	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);	857	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);	858	X_UNLOCK (preadwritelock);
620		859
621	return res;	860	return res;
622	}	861	}
623		862
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
625	{	864	{
626	ssize_t res;	865	ssize_t res;
627	off_t ooffset;	866	off_t ooffset;
628		867
629	pthread_mutex_lock (&preadwritelock);	868	X_LOCK (preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);	869	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);	870	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);	871	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);	872	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);	873	X_UNLOCK (preadwritelock);
635		874
636	return res;	875	return res;
637	}	876	}
		877	#endif
		878
		879	#ifndef HAVE_FUTIMES
		880
		881	# define utimes(path,times) aio_utimes (path, times)
		882	# define futimes(fd,times) aio_futimes (fd, times)
		883
		884	int aio_utimes (const char *filename, const struct timeval times[2])
		885	{
		886	if (times)
		887	{
		888	struct utimbuf buf;
		889
		890	buf.actime = times[0].tv_sec;
		891	buf.modtime = times[1].tv_sec;
		892
		893	return utime (filename, &buf);
		894	}
		895	else
		896	return utime (filename, 0);
		897	}
		898
		899	int aio_futimes (int fd, const struct timeval tv[2])
		900	{
		901	errno = ENOSYS;
		902	return -1;
		903	}
		904
638	#endif	905	#endif
639		906
640	#if !HAVE_FDATASYNC	907	#if !HAVE_FDATASYNC
641	# define fdatasync fsync	908	# define fdatasync fsync
642	#endif	909	#endif
643		910
644	#if !HAVE_READAHEAD	911	#if !HAVE_READAHEAD
645	# define readahead aio_readahead	912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
646		913
647	static ssize_t readahead (int fd, off_t offset, size_t count)	914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
648	{	915	{
		916	size_t todo = count;
649	dBUF;	917	dBUF;
650		918
651	while (count > 0)	919	while (todo > 0)
652	{	920	{
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
654		922
655	pread (fd, aio_buf, len, offset);	923	pread (fd, aio_buf, len, offset);
656	offset += len;	924	offset += len;
657	count -= len;	925	todo -= len;
658	}	926	}
659		927
660	fBUF;
661
662	errno = 0;	928	errno = 0;
		929	return count;
663	}	930	}
		931
664	#endif	932	#endif
665		933
666	#if !HAVE_READDIR_R	934	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r	935	# define readdir_r aio_readdir_r
668		936
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	937	static mutex_t readdirlock = X_MUTEX_INIT;
670		938
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
672	{	940	{
673	struct dirent *e;	941	X_DIRENT *e;
674	int errorno;	942	int errorno;
675		943
676	pthread_mutex_lock (&readdirlock);	944	X_LOCK (readdirlock);
677		945
678	e = readdir (dirp);	946	e = readdir (dirp);
679	errorno = errno;	947	errorno = errno;
680		948
681	if (e)	949	if (e)
…		…
684	strcpy (ent->d_name, e->d_name);	952	strcpy (ent->d_name, e->d_name);
685	}	953	}
686	else	954	else
687	*res = 0;	955	*res = 0;
688		956
689	pthread_mutex_unlock (&readdirlock);	957	X_UNLOCK (readdirlock);
690		958
691	errno = errorno;	959	errno = errorno;
692	return e ? 0 : -1;	960	return e ? 0 : -1;
693	}	961	}
694	#endif	962	#endif
695		963
696	/* sendfile always needs emulation */	964	/* sendfile always needs emulation */
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
698	{	966	{
699	ssize_t res;	967	ssize_t res;
700		968
701	if (!count)	969	if (!count)
702	return 0;	970	return 0;
…		…
713	{	981	{
714	off_t sbytes;	982	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716		984
717	if (res < 0 && sbytes)	985	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
719	res = sbytes;	987	res = sbytes;
720	}	988	}
721		989
722	# elif __hpux	990	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	991	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
779		1047
780	offset += cnt;	1048	offset += cnt;
781	res += cnt;	1049	res += cnt;
782	count -= cnt;	1050	count -= cnt;
783	}	1051	}
784
785	fBUF;
786	}	1052	}
787		1053
788	return res;	1054	return res;
789	}	1055	}
790		1056
791	/* read a full directory */	1057	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)	1058	static void scandir_ (aio_req req, worker *self)
793	{	1059	{
794	DIR *dirp;	1060	DIR *dirp;
795	union	1061	union
796	{	1062	{
797	struct dirent d;	1063	X_DIRENT d;
798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
799	} *u;	1065	} *u;
800	struct dirent *entp;	1066	X_DIRENT *entp;
801	char *name, *names;	1067	char *name, *names;
802	int memlen = 4096;	1068	int memlen = 4096;
803	int memofs = 0;	1069	int memofs = 0;
804	int res = 0;	1070	int res = 0;
805	int errorno;
806		1071
807	dirp = opendir (path);	1072	X_LOCK (wrklock);
808	if (!dirp)	1073	self->dirp = dirp = opendir (req->ptr1);
809	return -1;
810
811	u = malloc (sizeof (*u));	1074	self->dbuf = u = malloc (sizeof (*u));
		1075	req->flags |= FLAG_PTR2_FREE;
812	names = malloc (memlen);	1076	req->ptr2 = names = malloc (memlen);
		1077	X_UNLOCK (wrklock);
813		1078
814	if (u && names)	1079	if (dirp && u && names)
815	for (;;)	1080	for (;;)
816	{	1081	{
817	errno = 0;	1082	errno = 0;
818	readdir_r (dirp, &u->d, &entp);	1083	readdir_r (dirp, &u->d, &entp);
819		1084
…		…
829	res++;	1094	res++;
830		1095
831	while (memofs + len > memlen)	1096	while (memofs + len > memlen)
832	{	1097	{
833	memlen *= 2;	1098	memlen *= 2;
		1099	X_LOCK (wrklock);
834	names = realloc (names, memlen);	1100	req->ptr2 = names = realloc (names, memlen);
		1101	X_UNLOCK (wrklock);
		1102
835	if (!names)	1103	if (!names)
836	break;	1104	break;
837	}	1105	}
838		1106
839	memcpy (names + memofs, name, len);	1107	memcpy (names + memofs, name, len);
840	memofs += len;	1108	memofs += len;
841	}	1109	}
842	}	1110	}
843		1111
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	if (errorno)	1112	if (errno)
		1113	res = -1;
		1114
		1115	req->result = res;
		1116	}
		1117
		1118	/*****************************************************************************/
		1119
		1120	X_THREAD_PROC (aio_proc)
		1121	{
		1122	{//D
		1123	aio_req req;
		1124	struct timespec ts;
		1125	worker *self = (worker *)thr_arg;
		1126
		1127	/* try to distribute timeouts somewhat randomly */
		1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1129
		1130	for (;;)
849	{	1131	{
850	free (names);	1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
851	errno = errorno;
852	res = -1;
853	}
854		1133
855	*namesp = (void *)names;	1134	X_LOCK (reqlock);
856	return res;
857	}
858
859	/*****************************************************************************/
860
861	static void *aio_proc (void *thr_arg)
862	{
863	aio_req req;
864	int type;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869		1135
870	for (;;)	1136	for (;;)
871	{	1137	{
872	req = reqq_shift (&req_queue);	1138	self->req = req = reqq_shift (&req_queue);
873		1139
874	if (req)	1140	if (req)
875	break;	1141	break;
876		1142
877	pthread_cond_wait (&reqwait, &reqlock);	1143	++idle;
		1144
		1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1146	== ETIMEDOUT)
		1147	{
		1148	if (idle > max_idle)
		1149	{
		1150	--idle;
		1151	X_UNLOCK (reqlock);
		1152	X_LOCK (wrklock);
		1153	--started;
		1154	X_UNLOCK (wrklock);
		1155	goto quit;
		1156	}
		1157
		1158	/* we are allowed to idle, so do so without any timeout */
		1159	X_COND_WAIT (reqwait, reqlock);
		1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1161	}
		1162
		1163	--idle;
878	}	1164	}
879		1165
880	pthread_mutex_unlock (&reqlock);	1166	--nready;
		1167
		1168	X_UNLOCK (reqlock);
881		1169
882	errno = 0; /* strictly unnecessary */	1170	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884		1171
885	if (!(req->flags & FLAG_CANCELLED))	1172	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)	1173	switch (req->type)
887	{	1174	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1175	case REQ_READ: req->result = req->offs >= 0
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1176	? pread (req->int1, req->ptr1, req->size, req->offs)
		1177	: read (req->int1, req->ptr1, req->size); break;
		1178	case REQ_WRITE: req->result = req->offs >= 0
		1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1180	: write (req->int1, req->ptr1, req->size); break;
890		1181
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1182	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;	1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
893		1184
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1185	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;	1186	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;	1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
897		1188
		1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1195
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;	1197	case REQ_CLOSE: req->result = close (req->int1); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
905		1206
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;	1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1209	case REQ_READDIR: scandir_ (req, self); break;
909		1210
910	case REQ_BUSY:	1211	case REQ_BUSY:
		1212	#ifdef _WIN32
		1213	Sleep (req->nv1 * 1000.);
		1214	#else
911	{	1215	{
912	struct timeval tv;	1216	struct timeval tv;
913		1217
914	tv.tv_sec = req->fd;	1218	tv.tv_sec = req->nv1;
915	tv.tv_usec = req->fd2;	1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
916		1220
917	req->result = select (0, 0, 0, 0, &tv);	1221	req->result = select (0, 0, 0, 0, &tv);
918	}	1222	}
		1223	#endif
		1224	break;
		1225
		1226	case REQ_UTIME:
		1227	case REQ_FUTIME:
		1228	{
		1229	struct timeval tv[2];
		1230	struct timeval *times;
		1231
		1232	if (req->nv1 != -1. || req->nv2 != -1.)
		1233	{
		1234	tv[0].tv_sec = req->nv1;
		1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1236	tv[1].tv_sec = req->nv2;
		1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1238
		1239	times = tv;
		1240	}
		1241	else
		1242	times = 0;
		1243
		1244
		1245	req->result = req->type == REQ_FUTIME
		1246	? futimes (req->int1, times)
		1247	: utimes (req->ptr1, times);
		1248	}
919		1249
920	case REQ_GROUP:	1250	case REQ_GROUP:
921	case REQ_NOP:	1251	case REQ_NOP:
		1252	break;
		1253
922	case REQ_QUIT:	1254	case REQ_QUIT:
923	break;	1255	goto quit;
924		1256
925	default:	1257	default:
926	req->result = ENOSYS;	1258	req->result = -1;
927	break;	1259	break;
928	}	1260	}
929		1261
930	req->errorno = errno;	1262	req->errorno = errno;
931		1263
932	pthread_mutex_lock (&reslock);	1264	X_LOCK (reslock);
		1265
		1266	++npending;
933		1267
934	if (!reqq_push (&res_queue, req))	1268	if (!reqq_push (&res_queue, req))
		1269	{
935	/* write a dummy byte to the pipe so fh becomes ready */	1270	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);	1271	write (respipe [1], &respipe, 1);
937		1272
938	pthread_mutex_unlock (&reslock);	1273	/* optionally signal the main thread asynchronously */
		1274	if (main_sig)
		1275	pthread_kill (main_tid, main_sig);
		1276	}
		1277
		1278	self->req = 0;
		1279	worker_clear (self);
		1280
		1281	X_UNLOCK (reslock);
939	}	1282	}
940	while (type != REQ_QUIT);	1283
		1284	quit:
		1285	X_LOCK (wrklock);
		1286	worker_free (self);
		1287	X_UNLOCK (wrklock);
941		1288
942	return 0;	1289	return 0;
		1290	}//D
943	}	1291	}
944		1292
945	/*****************************************************************************/	1293	/*****************************************************************************/
946		1294
947	static void atfork_prepare (void)	1295	static void atfork_prepare (void)
948	{	1296	{
949	pthread_mutex_lock (&reqlock);	1297	X_LOCK (wrklock);
950	pthread_mutex_lock (&reslock);	1298	X_LOCK (reqlock);
		1299	X_LOCK (reslock);
951	#if !HAVE_PREADWRITE	1300	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);	1301	X_LOCK (preadwritelock);
953	#endif	1302	#endif
954	#if !HAVE_READDIR_R	1303	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);	1304	X_LOCK (readdirlock);
956	#endif	1305	#endif
957	}	1306	}
958		1307
959	static void atfork_parent (void)	1308	static void atfork_parent (void)
960	{	1309	{
961	#if !HAVE_READDIR_R	1310	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);	1311	X_UNLOCK (readdirlock);
963	#endif	1312	#endif
964	#if !HAVE_PREADWRITE	1313	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);	1314	X_UNLOCK (preadwritelock);
966	#endif	1315	#endif
967	pthread_mutex_unlock (&reslock);	1316	X_UNLOCK (reslock);
968	pthread_mutex_unlock (&reqlock);	1317	X_UNLOCK (reqlock);
		1318	X_UNLOCK (wrklock);
969	}	1319	}
970		1320
971	static void atfork_child (void)	1321	static void atfork_child (void)
972	{	1322	{
973	aio_req prv;	1323	aio_req prv;
974		1324
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))	1325	while (prv = reqq_shift (&req_queue))
978	req_free (prv);	1326	req_destroy (prv);
979		1327
980	while (prv = reqq_shift (&res_queue))	1328	while (prv = reqq_shift (&res_queue))
981	req_free (prv);	1329	req_destroy (prv);
982		1330
		1331	while (wrk_first.next != &wrk_first)
		1332	{
		1333	worker *wrk = wrk_first.next;
		1334
		1335	if (wrk->req)
		1336	req_destroy (wrk->req);
		1337
		1338	worker_clear (wrk);
		1339	worker_free (wrk);
		1340	}
		1341
		1342	started = 0;
		1343	idle = 0;
		1344	nreqs = 0;
		1345	nready = 0;
		1346	npending = 0;
		1347
983	close (respipe [0]);	1348	close (respipe [0]);
984	close (respipe [1]);	1349	close (respipe [1]);
985	create_pipe ();	1350
		1351	if (!create_pipe (respipe))
		1352	croak ("cannot set result pipe to nonblocking mode");
986		1353
987	atfork_parent ();	1354	atfork_parent ();
988	}	1355	}
989		1356
990	#define dREQ \	1357	#define dREQ \
…		…
1013	PROTOTYPES: ENABLE	1380	PROTOTYPES: ENABLE
1014		1381
1015	BOOT:	1382	BOOT:
1016	{	1383	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	1384	HV *stash = gv_stashpv ("IO::AIO", 1);
		1385
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1391	#ifdef _WIN32
		1392	X_MUTEX_CHECK (wrklock);
		1393	X_MUTEX_CHECK (reslock);
		1394	X_MUTEX_CHECK (reqlock);
		1395	X_MUTEX_CHECK (reqwait);
		1396	X_MUTEX_CHECK (preadwritelock);
		1397	X_MUTEX_CHECK (readdirlock);
		1398	#else
		1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1401	#endif
1021		1402
1022	create_pipe ();	1403	if (!create_pipe (respipe))
		1404	croak ("cannot set result pipe to nonblocking mode");
		1405
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1024	}	1407	}
1025		1408
1026	void	1409	void
1027	min_parallel (nthreads)	1410	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	1411	PROTOTYPE: $
		1412	CODE:
		1413	max_poll_reqs = nreqs;
1030		1414
1031	void	1415	void
1032	max_parallel (nthreads)	1416	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	1417	PROTOTYPE: $
		1418	CODE:
		1419	max_poll_time = nseconds * AIO_TICKS;
		1420
		1421	void
		1422	min_parallel (int nthreads)
		1423	PROTOTYPE: $
		1424
		1425	void
		1426	max_parallel (int nthreads)
		1427	PROTOTYPE: $
		1428
		1429	void
		1430	max_idle (int nthreads)
		1431	PROTOTYPE: $
		1432	CODE:
		1433	set_max_idle (nthreads);
1035		1434
1036	int	1435	int
1037	max_outstanding (nreqs)	1436	max_outstanding (int maxreqs)
1038	int nreqs	1437	PROTOTYPE: $
1039	PROTOTYPE: $
1040	CODE:	1438	CODE:
1041	RETVAL = max_outstanding;	1439	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;	1440	max_outstanding = maxreqs;
		1441	OUTPUT:
		1442	RETVAL
1043		1443
1044	void	1444	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1445	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: $$$;$	1446	PROTOTYPE: $$$;$
1051	PPCODE:	1447	PPCODE:
1052	{	1448	{
1053	dREQ;	1449	dREQ;
1054		1450
1055	req->type = REQ_OPEN;	1451	req->type = REQ_OPEN;
1056	req->data = newSVsv (pathname);	1452	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1453	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	1454	req->int1 = flags;
1059	req->mode = mode;	1455	req->mode = mode;
1060		1456
1061	REQ_SEND;	1457	REQ_SEND;
1062	}	1458	}
1063		1459
1064	void	1460	void
1065	aio_close (fh,callback=&PL_sv_undef)	1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	1462	PROTOTYPE: $;$
1069	ALIAS:	1463	ALIAS:
1070	aio_close = REQ_CLOSE	1464	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	1465	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	1466	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:	1467	PPCODE:
1074	{	1468	{
1075	dREQ;	1469	dREQ;
1076		1470
1077	req->type = ix;	1471	req->type = ix;
1078	req->fh = newSVsv (fh);	1472	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		1474
1081	REQ_SEND (req);	1475	REQ_SEND (req);
1082	}	1476	}
1083		1477
1084	void	1478	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1479	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:	1480	ALIAS:
1093	aio_read = REQ_READ	1481	aio_read = REQ_READ
1094	aio_write = REQ_WRITE	1482	aio_write = REQ_WRITE
1095	PROTOTYPE: $$$$$;$	1483	PROTOTYPE: $$$$$;$
1096	PPCODE:	1484	PPCODE:
1097	{	1485	{
1098	aio_req req;
1099	STRLEN svlen;	1486	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	1487	char *svptr = SvPVbyte (data, svlen);
		1488	UV len = SvUV (length);
1101		1489
1102	SvUPGRADE (data, SVt_PV);	1490	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	1491	SvPOK_on (data);
1104		1492
1105	if (dataoffset < 0)	1493	if (dataoffset < 0)
1106	dataoffset += svlen;	1494	dataoffset += svlen;
1107		1495
1108	if (dataoffset < 0 || dataoffset > svlen)	1496	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	1497	croak ("dataoffset outside of data scalar");
1110		1498
1111	if (ix == REQ_WRITE)	1499	if (ix == REQ_WRITE)
1112	{	1500	{
1113	/* write: check length and adjust. */	1501	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	1502	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	1503	len = svlen - dataoffset;
1116	}	1504	}
1117	else	1505	else
1118	{	1506	{
1119	/* read: grow scalar as necessary */	1507	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	1508	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	1509	}
1122		1510
1123	if (length < 0)	1511	if (len < 0)
1124	croak ("length must not be negative");	1512	croak ("length must not be negative");
1125		1513
1126	{	1514	{
1127	dREQ;	1515	dREQ;
1128		1516
1129	req->type = ix;	1517	req->type = ix;
1130	req->fh = newSVsv (fh);	1518	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	1520	: IoOFP (sv_2io (fh)));
		1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	1522	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	1523	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1524	req->ptr1 = (char *)svptr + dataoffset;
		1525	req->stroffset = dataoffset;
1137		1526
1138	if (!SvREADONLY (data))	1527	if (!SvREADONLY (data))
1139	{	1528	{
1140	SvREADONLY_on (data);	1529	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1530	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1531	}
1143		1532
1144	REQ_SEND;	1533	REQ_SEND;
1145	}	1534	}
1146	}	1535	}
1147		1536
1148	void	1537	void
		1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1539	PROTOTYPE: $$;$
		1540	PPCODE:
		1541	{
		1542	SV *data;
		1543	dREQ;
		1544
		1545	data = newSV (NAME_MAX);
		1546	SvPOK_on (data);
		1547
		1548	req->type = REQ_READLINK;
		1549	req->sv1 = newSVsv (path);
		1550	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1551	req->sv2 = data;
		1552	req->ptr1 = SvPVbyte_nolen (data);
		1553
		1554	REQ_SEND;
		1555	}
		1556
		1557	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1558	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: $$$$;$	1559	PROTOTYPE: $$$$;$
1156	PPCODE:	1560	PPCODE:
1157	{	1561	{
1158	dREQ;	1562	dREQ;
1159		1563
1160	req->type = REQ_SENDFILE;	1564	req->type = REQ_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1565	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	1567	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	1569	req->offs = SvVAL64 (in_offset);
1166	req->length = length;	1570	req->size = length;
1167		1571
1168	REQ_SEND;	1572	REQ_SEND;
1169	}	1573	}
1170		1574
1171	void	1575	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	1577	PROTOTYPE: $$$;$
1178	PPCODE:	1578	PPCODE:
1179	{	1579	{
1180	dREQ;	1580	dREQ;
1181		1581
1182	req->type = REQ_READAHEAD;	1582	req->type = REQ_READAHEAD;
1183	req->fh = newSVsv (fh);	1583	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	1585	req->offs = SvVAL64 (offset);
1186	req->length = length;	1586	req->size = length;
1187		1587
1188	REQ_SEND;	1588	REQ_SEND;
1189	}	1589	}
1190		1590
1191	void	1591	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1593	ALIAS:
1196	aio_stat = REQ_STAT	1594	aio_stat = REQ_STAT
1197	aio_lstat = REQ_LSTAT	1595	aio_lstat = REQ_LSTAT
1198	PPCODE:	1596	PPCODE:
1199	{	1597	{
1200	dREQ;	1598	dREQ;
1201		1599
1202	New (0, req->statdata, 1, Stat_t);	1600	req->ptr2 = malloc (sizeof (Stat_t));
1203	if (!req->statdata)	1601	if (!req->ptr2)
1204	{	1602	{
1205	req_free (req);	1603	req_destroy (req);
1206	croak ("out of memory during aio_req->statdata allocation");	1604	croak ("out of memory during aio_stat statdata allocation");
1207	}	1605	}
		1606
		1607	req->flags |= FLAG_PTR2_FREE;
		1608	req->sv1 = newSVsv (fh_or_path);
1208		1609
1209	if (SvPOK (fh_or_path))	1610	if (SvPOK (fh_or_path))
1210	{	1611	{
1211	req->type = ix;	1612	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1613	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1614	}
1215	else	1615	else
1216	{	1616	{
1217	req->type = REQ_FSTAT;	1617	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1619	}
1221		1620
1222	REQ_SEND;	1621	REQ_SEND;
1223	}	1622	}
1224		1623
1225	void	1624	void
		1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	dREQ;
		1629
		1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1632	req->sv1 = newSVsv (fh_or_path);
		1633
		1634	if (SvPOK (fh_or_path))
		1635	{
		1636	req->type = REQ_UTIME;
		1637	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1638	}
		1639	else
		1640	{
		1641	req->type = REQ_FUTIME;
		1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1643	}
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
		1649	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1650	PPCODE:
		1651	{
		1652	dREQ;
		1653
		1654	req->sv1 = newSVsv (fh_or_path);
		1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1656
		1657	if (SvPOK (fh_or_path))
		1658	{
		1659	req->type = REQ_TRUNCATE;
		1660	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1661	}
		1662	else
		1663	{
		1664	req->type = REQ_FTRUNCATE;
		1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1666	}
		1667
		1668	REQ_SEND;
		1669	}
		1670
		1671	void
		1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1673	PPCODE:
		1674	{
		1675	dREQ;
		1676
		1677	req->mode = mode;
		1678	req->sv1 = newSVsv (fh_or_path);
		1679
		1680	if (SvPOK (fh_or_path))
		1681	{
		1682	req->type = REQ_CHMOD;
		1683	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1684	}
		1685	else
		1686	{
		1687	req->type = REQ_FCHMOD;
		1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1689	}
		1690
		1691	REQ_SEND;
		1692	}
		1693
		1694	void
		1695	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1696	PPCODE:
		1697	{
		1698	dREQ;
		1699
		1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1702	req->sv1 = newSVsv (fh_or_path);
		1703
		1704	if (SvPOK (fh_or_path))
		1705	{
		1706	req->type = REQ_CHOWN;
		1707	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1708	}
		1709	else
		1710	{
		1711	req->type = REQ_FCHOWN;
		1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1713	}
		1714
		1715	REQ_SEND;
		1716	}
		1717
		1718	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1720	ALIAS:
1230	aio_unlink = REQ_UNLINK	1721	aio_unlink = REQ_UNLINK
1231	aio_rmdir = REQ_RMDIR	1722	aio_rmdir = REQ_RMDIR
1232	aio_readdir = REQ_READDIR	1723	aio_readdir = REQ_READDIR
1233	PPCODE:	1724	PPCODE:
1234	{	1725	{
1235	dREQ;	1726	dREQ;
1236		1727
1237	req->type = ix;	1728	req->type = ix;
1238	req->data = newSVsv (pathname);	1729	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1730	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1731
		1732	REQ_SEND;
		1733	}
		1734
		1735	void
		1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1737	PPCODE:
		1738	{
		1739	dREQ;
1240		1740
		1741	req->type = REQ_MKDIR;
		1742	req->sv1 = newSVsv (pathname);
		1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1744	req->mode = mode;
		1745
1241	REQ_SEND;	1746	REQ_SEND;
1242	}	1747	}
1243		1748
1244	void	1749	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1751	ALIAS:
1250	aio_link = REQ_LINK	1752	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK	1753	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME	1754	aio_rename = REQ_RENAME
1253	PPCODE:	1755	PPCODE:
1254	{	1756	{
1255	dREQ;	1757	dREQ;
1256		1758
1257	req->type = ix;	1759	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1760	req->sv2 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1761	req->ptr2 = SvPVbyte_nolen (req->sv2);
1260	req->data = newSVsv (newpath);	1762	req->sv1 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1262		1764
1263	REQ_SEND;	1765	REQ_SEND;
1264	}	1766	}
1265		1767
1266	void	1768	void
1267	aio_busy (delay,callback=&PL_sv_undef)	1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1770	PPCODE:
1271	{	1771	{
1272	dREQ;	1772	dREQ;
		1773
		1774	req->type = REQ_MKNOD;
		1775	req->sv1 = newSVsv (pathname);
		1776	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1777	req->mode = (mode_t)mode;
		1778	req->offs = dev;
		1779
		1780	REQ_SEND;
		1781	}
		1782
		1783	void
		1784	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1785	PPCODE:
		1786	{
		1787	dREQ;
1273		1788
1274	req->type = REQ_BUSY;	1789	req->type = REQ_BUSY;
1275	req->fd = delay < 0. ? 0 : delay;	1790	req->nv1 = delay < 0. ? 0. : delay;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1277		1791
1278	REQ_SEND;	1792	REQ_SEND;
1279	}	1793	}
1280		1794
1281	void	1795	void
1282	aio_group (callback=&PL_sv_undef)	1796	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	1797	PROTOTYPE: ;$
1285	PPCODE:	1798	PPCODE:
1286	{	1799	{
1287	dREQ;	1800	dREQ;
1288		1801
1289	req->type = REQ_GROUP;	1802	req->type = REQ_GROUP;
		1803
1290	req_send (req);	1804	req_send (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	1806	}
1294		1807
1295	void	1808	void
1296	aio_nop (callback=&PL_sv_undef)	1809	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback
1298	PPCODE:	1810	PPCODE:
1299	{	1811	{
1300	dREQ;	1812	dREQ;
1301		1813
1302	req->type = REQ_NOP;	1814	req->type = REQ_NOP;
1303		1815
1304	REQ_SEND;	1816	REQ_SEND;
1305	}	1817	}
1306		1818
1307	void	1819	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1820	aioreq_pri (int pri = 0)
1309	CODE:	1821	PROTOTYPE: ;$
		1822	CODE:
		1823	RETVAL = next_pri - PRI_BIAS;
		1824	if (items > 0)
		1825	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1826	if (pri < PRI_MIN) pri = PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1827	if (pri > PRI_MAX) pri = PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1828	next_pri = pri + PRI_BIAS;
		1829	}
		1830	OUTPUT:
		1831	RETVAL
1313		1832
1314	void	1833	void
1315	aioreq_nice (int nice = 0)	1834	aioreq_nice (int nice = 0)
1316	CODE:	1835	CODE:
1317	nice = next_pri - nice;	1836	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1837	if (nice < PRI_MIN) nice = PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1838	if (nice > PRI_MAX) nice = PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1839	next_pri = nice + PRI_BIAS;
1321		1840
1322	void	1841	void
1323	flush ()	1842	flush ()
1324	PROTOTYPE:	1843	PROTOTYPE:
1325	CODE:	1844	CODE:
…		…
1327	{	1846	{
1328	poll_wait ();	1847	poll_wait ();
1329	poll_cb ();	1848	poll_cb ();
1330	}	1849	}
1331		1850
1332	void	1851	int
1333	poll()	1852	poll()
1334	PROTOTYPE:	1853	PROTOTYPE:
1335	CODE:	1854	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();	1855	poll_wait ();
1339	poll_cb ();	1856	RETVAL = poll_cb ();
1340	}	1857	OUTPUT:
		1858	RETVAL
1341		1859
1342	int	1860	int
1343	poll_fileno()	1861	poll_fileno()
1344	PROTOTYPE:	1862	PROTOTYPE:
1345	CODE:	1863	CODE:
…		…
1357		1875
1358	void	1876	void
1359	poll_wait()	1877	poll_wait()
1360	PROTOTYPE:	1878	PROTOTYPE:
1361	CODE:	1879	CODE:
1362	if (nreqs)
1363	poll_wait ();	1880	poll_wait ();
		1881
		1882	void
		1883	setsig (int signum = SIGIO)
		1884	PROTOTYPE: ;$
		1885	CODE:
		1886	{
		1887	if (block_sig_level)
		1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1889
		1890	X_LOCK (reslock);
		1891	main_tid = pthread_self ();
		1892	main_sig = signum;
		1893	X_UNLOCK (reslock);
		1894
		1895	if (main_sig && npending)
		1896	pthread_kill (main_tid, main_sig);
		1897	}
		1898
		1899	void
		1900	aio_block (SV *cb)
		1901	PROTOTYPE: &
		1902	PPCODE:
		1903	{
		1904	int count;
		1905
		1906	block_sig ();
		1907	PUSHMARK (SP);
		1908	PUTBACK;
		1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1910	SPAGAIN;
		1911	unblock_sig ();
		1912
		1913	if (SvTRUE (ERRSV))
		1914	croak (0);
		1915
		1916	XSRETURN (count);
		1917	}
1364		1918
1365	int	1919	int
1366	nreqs()	1920	nreqs()
1367	PROTOTYPE:	1921	PROTOTYPE:
1368	CODE:	1922	CODE:
1369	RETVAL = nreqs;	1923	RETVAL = nreqs;
1370	OUTPUT:	1924	OUTPUT:
1371	RETVAL	1925	RETVAL
1372		1926
		1927	int
		1928	nready()
		1929	PROTOTYPE:
		1930	CODE:
		1931	RETVAL = get_nready ();
		1932	OUTPUT:
		1933	RETVAL
		1934
		1935	int
		1936	npending()
		1937	PROTOTYPE:
		1938	CODE:
		1939	RETVAL = get_npending ();
		1940	OUTPUT:
		1941	RETVAL
		1942
		1943	int
		1944	nthreads()
		1945	PROTOTYPE:
		1946	CODE:
		1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1948	RETVAL = started;
		1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1950	OUTPUT:
		1951	RETVAL
		1952
1373	PROTOTYPES: DISABLE	1953	PROTOTYPES: DISABLE
1374		1954
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1956
1377	void	1957	void
…		…
1392	PPCODE:	1972	PPCODE:
1393	{	1973	{
1394	int i;	1974	int i;
1395	aio_req req;	1975	aio_req req;
1396		1976
		1977	if (main_sig && !block_sig_level)
		1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1979
1397	if (grp->fd == 2)	1980	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1982
1400	for (i = 1; i < items; ++i )	1983	for (i = 1; i < items; ++i )
1401	{	1984	{
1402	if (GIMME_V != G_VOID)	1985	if (GIMME_V != G_VOID)
…		…
1404		1987
1405	req = SvAIO_REQ (ST (i));	1988	req = SvAIO_REQ (ST (i));
1406		1989
1407	if (req)	1990	if (req)
1408	{	1991	{
1409	++grp->length;	1992	++grp->size;
1410	req->grp = grp;	1993	req->grp = grp;
1411		1994
1412	req->grp_prev = 0;	1995	req->grp_prev = 0;
1413	req->grp_next = grp->grp_first;	1996	req->grp_next = grp->grp_first;
1414		1997
…		…
1419	}	2002	}
1420	}	2003	}
1421	}	2004	}
1422		2005
1423	void	2006	void
		2007	cancel_subs (aio_req_ornot req)
		2008	CODE:
		2009	req_cancel_subs (req);
		2010
		2011	void
1424	result (aio_req grp, ...)	2012	result (aio_req grp, ...)
1425	CODE:	2013	CODE:
1426	{	2014	{
1427	int i;	2015	int i;
		2016	AV *av;
		2017
		2018	grp->errorno = errno;
		2019
1428	AV *av = newAV ();	2020	av = newAV ();
1429		2021
1430	for (i = 1; i < items; ++i )	2022	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	2023	av_push (av, newSVsv (ST (i)));
1432		2024
1433	SvREFCNT_dec (grp->data);	2025	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	2026	grp->sv1 = (SV *)av;
1435	}	2027	}
		2028
		2029	void
		2030	errno (aio_req grp, int errorno = errno)
		2031	CODE:
		2032	grp->errorno = errorno;
1436		2033
1437	void	2034	void
1438	limit (aio_req grp, int limit)	2035	limit (aio_req grp, int limit)
1439	CODE:	2036	CODE:
1440	grp->fd2 = limit;	2037	grp->int2 = limit;
1441	aio_grp_feed (grp);	2038	aio_grp_feed (grp);
1442		2039
1443	void	2040	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	2041	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	2042	CODE:
1446	{	2043	{
1447	SvREFCNT_dec (grp->fh2);	2044	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	2045	grp->sv2 = newSVsv (callback);
1449		2046
1450	if (grp->fd2 <= 0)	2047	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	2048	grp->int2 = 2;
1452		2049
1453	aio_grp_feed (grp);	2050	aio_grp_feed (grp);
1454	}	2051	}
1455		2052

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