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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.105 by root, Sun Jul 8 11:12:15 2007 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"
17
18	#include <pthread.h>
19
20	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
21	#include <errno.h>	11	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	12	#include <sys/types.h>
25	#include <sys/stat.h>	13	#include <sys/stat.h>
26	#include <limits.h>	14	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	15	#include <fcntl.h>
29	#include <signal.h>
30	#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
31		68
32	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
33	# if __linux	70	# if __linux
34	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
35	# elif __freebsd	72	# elif __freebsd
…		…
42	# else	79	# else
43	# error sendfile support requested but not available	80	# error sendfile support requested but not available
44	# endif	81	# endif
45	#endif	82	#endif
46		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
47	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	88	#ifndef NAME_MAX
49	# define NAME_MAX 4096	89	# define NAME_MAX 4096
50	#endif	90	#endif
51		91
52	#if __ia64
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif
59
60	/* buffer size for various temporary buffers */	92	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	93	#define AIO_BUFSIZE 65536
62		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
63	#define dBUF \	102	#define dBUF \
		103	char *aio_buf; \
		104	X_LOCK (wrklock); \
64	char *aio_buf = malloc (AIO_BUFSIZE); \	105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		106	X_UNLOCK (wrklock); \
65	if (!aio_buf) \	107	if (!aio_buf) \
66	return -1;	108	return -1;
67		109
68	#define fBUF free (aio_buf)	110	typedef SV SV8; /* byte-sv, used for argument-checking */
69		111
70	enum {	112	enum {
71	REQ_QUIT,	113	REQ_QUIT,
72	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
74	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
75	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,
76	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
78	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
80	REQ_GROUP, REQ_NOP,	126	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,	127	REQ_BUSY,
82	};	128	};
83		129
84	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
86		132
87	typedef struct aio_cb	133	typedef struct aio_cb
88	{	134	{
89	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
90		136
91	SV *data, *callback;	137	SV *callback;
92	SV *fh, *fh2;	138	SV *sv1, *sv2;
93	void *dataptr, *data2ptr;	139	void *ptr1, *ptr2;
94	Stat_t *statdata;
95	off_t offset;	140	off_t offs;
96	size_t length;	141	size_t size;
97	ssize_t result;	142	ssize_t result;
		143	double nv1, nv2;
98		144
99	STRLEN dataoffset;	145	STRLEN stroffset;
100	int type;	146	int type;
101	int fd, fd2;	147	int int1, int2, int3;
102	int errorno;	148	int errorno;
103	mode_t mode; /* open */	149	mode_t mode; /* open */
104		150
105	unsigned char flags;	151	unsigned char flags;
106	unsigned char pri;	152	unsigned char pri;
…		…
108	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;	156	} aio_cb;
111		157
112	enum {	158	enum {
113	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) */
114	};	162	};
115		163
116	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
117	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
118		166
…		…
123	DEFAULT_PRI = 0,	171	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,	172	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};	174	};
127		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
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;	222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129		223
130	static int started, wanted;	224	static unsigned int started, idle, wanted;
131	static volatile int nreqs;
132	static int max_outstanding = 1<<30;
133	static int respipe [2];
134		225
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	226	/* worker threads management */
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	227	static mutex_t wrklock = X_MUTEX_INIT;
		228
		229	typedef struct worker {
		230	/* locked by wrklock */
		231	struct worker *prev, *next;
		232
		233	thread_t tid;
		234
		235	/* locked by reslock, reqlock or wrklock */
		236	aio_req req; /* currently processed request */
		237	void *dbuf;
		238	DIR *dirp;
		239	} worker;
		240
		241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		242
		243	static void worker_clear (worker *wrk)
		244	{
		245	if (wrk->dirp)
		246	{
		247	closedir (wrk->dirp);
		248	wrk->dirp = 0;
		249	}
		250
		251	if (wrk->dbuf)
		252	{
		253	free (wrk->dbuf);
		254	wrk->dbuf = 0;
		255	}
		256	}
		257
		258	static void worker_free (worker *wrk)
		259	{
		260	wrk->next->prev = wrk->prev;
		261	wrk->prev->next = wrk->next;
		262
		263	free (wrk);
		264	}
		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 [2], respipe_osf [2];
		270
		271	static mutex_t reslock = X_MUTEX_INIT;
		272	static mutex_t reqlock = X_MUTEX_INIT;
		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
137	#else	310	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
139	#endif	316	#endif
140
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
144		317
145	/*	318	/*
146	* a somewhat faster data structure might be nice, but	319	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns	320	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.	321	* per shift, the most expensive operation.
…		…
194	}	367	}
195		368
196	abort ();	369	abort ();
197	}	370	}
198		371
		372	static int poll_cb ();
199	static void req_invoke (aio_req req);	373	static int req_invoke (aio_req req);
		374	static void req_destroy (aio_req req);
200	static void req_free (aio_req req);	375	static void req_cancel (aio_req req);
201		376
202	/* must be called at most once */	377	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
204	{	379	{
205	if (!req->self)	380	if (!req->self)
…		…
223	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	399	}
225		400
226	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
227	{	402	{
		403	block_sig ();
		404
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
229	{	406	{
230	int old_len = grp->length;	407	int old_len = grp->size;
231		408
232	if (grp->fh2 && SvOK (grp->fh2))	409	if (grp->sv2 && SvOK (grp->sv2))
233	{	410	{
234	dSP;	411	dSP;
235		412
236	ENTER;	413	ENTER;
237	SAVETMPS;	414	SAVETMPS;
238	PUSHMARK (SP);	415	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
240	PUTBACK;	417	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	419	SPAGAIN;
243	FREETMPS;	420	FREETMPS;
244	LEAVE;	421	LEAVE;
245	}	422	}
246		423
247	/* stop if no progress has been made */	424	/* stop if no progress has been made */
248	if (old_len == grp->length)	425	if (old_len == grp->size)
249	{	426	{
250	SvREFCNT_dec (grp->fh2);	427	SvREFCNT_dec (grp->sv2);
251	grp->fh2 = 0;	428	grp->sv2 = 0;
252	break;	429	break;
253	}	430	}
254	}	431	}
		432
		433	unblock_sig ();
255	}	434	}
256		435
257	static void aio_grp_dec (aio_req grp)	436	static void aio_grp_dec (aio_req grp)
258	{	437	{
259	--grp->length;	438	--grp->size;
260		439
261	/* call feeder, if applicable */	440	/* call feeder, if applicable */
262	aio_grp_feed (grp);	441	aio_grp_feed (grp);
263		442
264	/* finish, if done */	443	/* finish, if done */
265	if (!grp->length && grp->fd)	444	if (!grp->size && grp->int1)
266	{	445	{
		446	block_sig ();
		447
267	req_invoke (grp);	448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
268	req_free (grp);	455	req_destroy (grp);
		456	unblock_sig ();
269	}	457	}
270	}	458	}
271		459
272	static void poll_wait ()
273	{
274	fd_set rfd;
275
276	while (nreqs)
277	{
278	int size;
279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)	460	static int req_invoke (aio_req req)
298	{	461	{
299	dSP;	462	dSP;
		463
		464	if (req->flags & FLAG_SV2_RO_OFF)
		465	SvREADONLY_off (req->sv2);
300		466
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{	468	{
303	errno = req->errorno;
304
305	ENTER;	469	ENTER;
306	SAVETMPS;	470	SAVETMPS;
307	PUSHMARK (SP);	471	PUSHMARK (SP);
308	EXTEND (SP, 1);	472	EXTEND (SP, 1);
309		473
…		…
313	{	477	{
314	SV *rv = &PL_sv_undef;	478	SV *rv = &PL_sv_undef;
315		479
316	if (req->result >= 0)	480	if (req->result >= 0)
317	{	481	{
		482	int i;
318	char *buf = req->data2ptr;	483	char *buf = req->ptr2;
319	AV *av = newAV ();	484	AV *av = newAV ();
320		485
321	while (req->result)	486	av_extend (av, req->result - 1);
		487
		488	for (i = 0; i < req->result; ++i)
322	{	489	{
323	SV *sv = newSVpv (buf, 0);	490	SV *sv = newSVpv (buf, 0);
324		491
325	av_push (av, sv);	492	av_store (av, i, sv);
326	buf += SvCUR (sv) + 1;	493	buf += SvCUR (sv) + 1;
327	req->result--;
328	}	494	}
329		495
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	496	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	497	}
332		498
…		…
342	PUSHs (sv_2mortal (newSViv (req->result)));	508	PUSHs (sv_2mortal (newSViv (req->result)));
343	PUTBACK;	509	PUTBACK;
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345	SPAGAIN;	511	SPAGAIN;
346		512
347	fh = SvREFCNT_inc (POPs);	513	fh = POPs;
348
349	PUSHMARK (SP);	514	PUSHMARK (SP);
350	XPUSHs (sv_2mortal (fh));	515	XPUSHs (fh);
351	}	516	}
352	break;	517	break;
353		518
354	case REQ_GROUP:	519	case REQ_GROUP:
355	req->fd = 2; /* mark group as finished */	520	req->int1 = 2; /* mark group as finished */
356		521
357	if (req->data)	522	if (req->sv1)
358	{	523	{
359	int i;	524	int i;
360	AV *av = (AV *)req->data;	525	AV *av = (AV *)req->sv1;
361		526
362	EXTEND (SP, AvFILL (av) + 1);	527	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	528	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	529	PUSHs (*av_fetch (av, i, 0));
365	}	530	}
…		…
367		532
368	case REQ_NOP:	533	case REQ_NOP:
369	case REQ_BUSY:	534	case REQ_BUSY:
370	break;	535	break;
371		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
372	default:	561	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	562	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	563	break;
375	}	564	}
376		565
		566	errno = req->errorno;
377		567
378	PUTBACK;	568	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	569	call_sv (req->callback, G_VOID | G_EVAL);
380	SPAGAIN;	570	SPAGAIN;
381		571
…		…
395	grp->grp_first = req->grp_next;	585	grp->grp_first = req->grp_next;
396		586
397	aio_grp_dec (grp);	587	aio_grp_dec (grp);
398	}	588	}
399		589
400	if (SvTRUE (ERRSV))	590	return !SvTRUE (ERRSV);
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	591	}
406		592
407	static void req_free (aio_req req)	593	static void req_destroy (aio_req req)
408	{	594	{
409	if (req->self)	595	if (req->self)
410	{	596	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
413	}	599	}
414		600
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420		604
421	if (req->type == REQ_READDIR && req->result >= 0)	605	if (req->flags & FLAG_PTR2_FREE)
422	free (req->data2ptr);	606	free (req->ptr2);
423		607
424	Safefree (req);	608	Safefree (req);
425	}	609	}
426		610
		611	static void req_cancel_subs (aio_req grp)
		612	{
		613	aio_req sub;
		614
		615	if (grp->type != REQ_GROUP)
		616	return;
		617
		618	SvREFCNT_dec (grp->sv2);
		619	grp->sv2 = 0;
		620
		621	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		622	req_cancel (sub);
		623	}
		624
427	static void req_cancel (aio_req req)	625	static void req_cancel (aio_req req)
428	{	626	{
429	req->flags |= FLAG_CANCELLED;	627	req->flags |= FLAG_CANCELLED;
430		628
431	if (req->type == REQ_GROUP)	629	req_cancel_subs (req);
		630	}
		631
		632	#ifdef USE_SOCKETS_AS_HANDLES
		633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		634	#else
		635	# define TO_SOCKET(x) (x)
		636	#endif
		637
		638	static void
		639	create_pipe (int fd[2])
		640	{
		641	#ifdef _WIN32
		642	int arg = 1;
		643	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, fd)
		644	|| ioctlsocket (TO_SOCKET (fd [0]), FIONBIO, &arg)
		645	|| ioctlsocket (TO_SOCKET (fd [1]), FIONBIO, &arg))
		646	#else
		647	if (pipe (fd)
		648	|| fcntl (fd [0], F_SETFL, O_NONBLOCK)
		649	|| fcntl (fd [1], F_SETFL, O_NONBLOCK))
		650	#endif
		651	croak ("unable to initialize result pipe");
		652
		653	respipe_osf [0] = TO_SOCKET (respipe [0]);
		654	respipe_osf [1] = TO_SOCKET (respipe [1]);
		655	}
		656
		657	X_THREAD_PROC (aio_proc);
		658
		659	static void start_thread (void)
		660	{
		661	worker *wrk = calloc (1, sizeof (worker));
		662
		663	if (!wrk)
		664	croak ("unable to allocate worker thread data");
		665
		666	X_LOCK (wrklock);
		667
		668	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
432	{	669	{
433	aio_req sub;	670	wrk->prev = &wrk_first;
		671	wrk->next = wrk_first.next;
		672	wrk_first.next->prev = wrk;
		673	wrk_first.next = wrk;
		674	++started;
		675	}
		676	else
		677	free (wrk);
434		678
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	679	X_UNLOCK (wrklock);
436	req_cancel (sub);	680	}
		681
		682	static void maybe_start_thread ()
		683	{
		684	if (get_nthreads () >= wanted)
		685	return;
		686
		687	/* todo: maybe use idle here, but might be less exact */
		688	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		689	return;
		690
		691	start_thread ();
		692	}
		693
		694	static void req_send (aio_req req)
		695	{
		696	block_sig ();
		697
		698	++nreqs;
		699
		700	X_LOCK (reqlock);
		701	++nready;
		702	reqq_push (&req_queue, req);
		703	X_COND_SIGNAL (reqwait);
		704	X_UNLOCK (reqlock);
		705
		706	unblock_sig ();
		707
		708	maybe_start_thread ();
		709	}
		710
		711	static void end_thread (void)
		712	{
		713	aio_req req;
		714
		715	Newz (0, req, 1, aio_cb);
		716
		717	req->type = REQ_QUIT;
		718	req->pri = PRI_MAX + PRI_BIAS;
		719
		720	X_LOCK (reqlock);
		721	reqq_push (&req_queue, req);
		722	X_COND_SIGNAL (reqwait);
		723	X_UNLOCK (reqlock);
		724
		725	X_LOCK (wrklock);
		726	--started;
		727	X_UNLOCK (wrklock);
		728	}
		729
		730	static void set_max_idle (int nthreads)
		731	{
		732	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		733	max_idle = nthreads <= 0 ? 1 : nthreads;
		734	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		735	}
		736
		737	static void min_parallel (int nthreads)
		738	{
		739	if (wanted < nthreads)
		740	wanted = nthreads;
		741	}
		742
		743	static void max_parallel (int nthreads)
		744	{
		745	if (wanted > nthreads)
		746	wanted = nthreads;
		747
		748	while (started > wanted)
		749	end_thread ();
		750	}
		751
		752	static void poll_wait ()
		753	{
		754	fd_set rfd;
		755
		756	while (nreqs)
		757	{
		758	int size;
		759	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		760	size = res_queue.size;
		761	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		762
		763	if (size)
		764	return;
		765
		766	maybe_start_thread ();
		767
		768	FD_ZERO (&rfd);
		769	FD_SET (respipe [0], &rfd);
		770
		771	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
437	}	772	}
438	}	773	}
439		774
440	static int poll_cb ()	775	static int poll_cb ()
441	{	776	{
442	dSP;	777	dSP;
443	int count = 0;	778	int count = 0;
		779	int maxreqs = max_poll_reqs;
444	int do_croak = 0;	780	int do_croak = 0;
		781	struct timeval tv_start, tv_now;
445	aio_req req;	782	aio_req req;
		783
		784	if (max_poll_time)
		785	gettimeofday (&tv_start, 0);
		786
		787	block_sig ();
446		788
447	for (;;)	789	for (;;)
448	{	790	{
449	pthread_mutex_lock (&reslock);	791	for (;;)
450	req = reqq_shift (&res_queue);
451
452	if (req)
453	{	792	{
		793	maybe_start_thread ();
		794
		795	X_LOCK (reslock);
		796	req = reqq_shift (&res_queue);
		797
454	if (!res_queue.size)	798	if (req)
455	{	799	{
		800	--npending;
		801
		802	if (!res_queue.size)
		803	{
456	/* read any signals sent by the worker threads */	804	/* read any signals sent by the worker threads */
457	char buf [32];	805	char buf [4];
458	while (read (respipe [0], buf, 32) == 32)	806	while (respipe_read (respipe [0], buf, 4) == 4)
		807	;
459	;	808	}
		809	}
		810
		811	X_UNLOCK (reslock);
		812
		813	if (!req)
		814	break;
		815
		816	--nreqs;
		817
		818	if (req->type == REQ_GROUP && req->size)
		819	{
		820	req->int1 = 1; /* mark request as delayed */
		821	continue;
		822	}
		823	else
		824	{
		825	if (!req_invoke (req))
		826	{
		827	req_destroy (req);
		828	unblock_sig ();
		829	croak (0);
		830	}
		831
		832	count++;
		833	}
		834
		835	req_destroy (req);
		836
		837	if (maxreqs && !--maxreqs)
		838	break;
		839
		840	if (max_poll_time)
		841	{
		842	gettimeofday (&tv_now, 0);
		843
		844	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		845	break;
460	}	846	}
461	}	847	}
462		848
463	pthread_mutex_unlock (&reslock);	849	if (nreqs <= max_outstanding)
464
465	if (!req)
466	break;	850	break;
467		851
468	--nreqs;	852	poll_wait ();
469		853
470	if (req->type == REQ_QUIT)	854	++maxreqs;
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}	855	}
499		856
		857	unblock_sig ();
500	return count;	858	return count;
501	}
502
503	static void *aio_proc(void *arg);
504
505	static void start_thread (void)
506	{
507	sigset_t fullsigset, oldsigset;
508	pthread_t tid;
509	pthread_attr_t attr;
510
511	pthread_attr_init (&attr);
512	pthread_attr_setstacksize (&attr, STACKSIZE);
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515	sigfillset (&fullsigset);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519	started++;
520
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
522	}
523
524	static void req_send (aio_req req)
525	{
526	while (started < wanted && nreqs >= started)
527	start_thread ();
528
529	++nreqs;
530
531	pthread_mutex_lock (&reqlock);
532	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);
535
536	if (nreqs > max_outstanding)
537	for (;;)
538	{
539	poll_cb ();
540
541	if (nreqs <= max_outstanding)
542	break;
543
544	poll_wait ();
545	}
546	}
547
548	static void end_thread (void)
549	{
550	aio_req req;
551
552	Newz (0, req, 1, aio_cb);
553
554	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;
556
557	req_send (req);
558	}
559
560	static void min_parallel (int nthreads)
561	{
562	if (wanted < nthreads)
563	wanted = nthreads;
564	}
565
566	static void max_parallel (int nthreads)
567	{
568	int cur = started;
569
570	if (wanted > nthreads)
571	wanted = nthreads;
572
573	while (cur > wanted)
574	{
575	end_thread ();
576	cur--;
577	}
578
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}
585
586	static void create_pipe ()
587	{
588	if (pipe (respipe))
589	croak ("unable to initialize result pipe");
590
591	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593
594	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
595	croak ("cannot set result pipe to nonblocking mode");
596	}	859	}
597		860
598	/*****************************************************************************/	861	/*****************************************************************************/
599	/* work around various missing functions */	862	/* work around various missing functions */
600		863
…		…
605	/*	868	/*
606	* make our pread/pwrite safe against themselves, but not against	869	* make our pread/pwrite safe against themselves, but not against
607	* normal read/write by using a mutex. slows down execution a lot,	870	* normal read/write by using a mutex. slows down execution a lot,
608	* but that's your problem, not mine.	871	* but that's your problem, not mine.
609	*/	872	*/
610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	873	static mutex_t preadwritelock = X_MUTEX_INIT;
611		874
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	875	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{	876	{
614	ssize_t res;	877	ssize_t res;
615	off_t ooffset;	878	off_t ooffset;
616		879
617	pthread_mutex_lock (&preadwritelock);	880	X_LOCK (preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);	881	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);	882	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);	883	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);	884	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);	885	X_UNLOCK (preadwritelock);
623		886
624	return res;	887	return res;
625	}	888	}
626		889
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	890	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{	891	{
629	ssize_t res;	892	ssize_t res;
630	off_t ooffset;	893	off_t ooffset;
631		894
632	pthread_mutex_lock (&preadwritelock);	895	X_LOCK (preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);	896	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);	897	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);	898	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);	899	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);	900	X_UNLOCK (preadwritelock);
638		901
639	return res;	902	return res;
640	}	903	}
		904	#endif
		905
		906	#ifndef HAVE_FUTIMES
		907
		908	# define utimes(path,times) aio_utimes (path, times)
		909	# define futimes(fd,times) aio_futimes (fd, times)
		910
		911	int aio_utimes (const char *filename, const struct timeval times[2])
		912	{
		913	if (times)
		914	{
		915	struct utimbuf buf;
		916
		917	buf.actime = times[0].tv_sec;
		918	buf.modtime = times[1].tv_sec;
		919
		920	return utime (filename, &buf);
		921	}
		922	else
		923	return utime (filename, 0);
		924	}
		925
		926	int aio_futimes (int fd, const struct timeval tv[2])
		927	{
		928	errno = ENOSYS;
		929	return -1;
		930	}
		931
641	#endif	932	#endif
642		933
643	#if !HAVE_FDATASYNC	934	#if !HAVE_FDATASYNC
644	# define fdatasync fsync	935	# define fdatasync fsync
645	#endif	936	#endif
646		937
647	#if !HAVE_READAHEAD	938	#if !HAVE_READAHEAD
648	# define readahead aio_readahead	939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
649		940
650	static ssize_t readahead (int fd, off_t offset, size_t count)	941	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
651	{	942	{
		943	size_t todo = count;
652	dBUF;	944	dBUF;
653		945
654	while (count > 0)	946	while (todo > 0)
655	{	947	{
656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
657		949
658	pread (fd, aio_buf, len, offset);	950	pread (fd, aio_buf, len, offset);
659	offset += len;	951	offset += len;
660	count -= len;	952	todo -= len;
661	}	953	}
662		954
663	fBUF;
664
665	errno = 0;	955	errno = 0;
		956	return count;
666	}	957	}
		958
667	#endif	959	#endif
668		960
669	#if !HAVE_READDIR_R	961	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r	962	# define readdir_r aio_readdir_r
671		963
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	964	static mutex_t readdirlock = X_MUTEX_INIT;
673		965
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	966	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
675	{	967	{
676	struct dirent *e;	968	X_DIRENT *e;
677	int errorno;	969	int errorno;
678		970
679	pthread_mutex_lock (&readdirlock);	971	X_LOCK (readdirlock);
680		972
681	e = readdir (dirp);	973	e = readdir (dirp);
682	errorno = errno;	974	errorno = errno;
683		975
684	if (e)	976	if (e)
…		…
687	strcpy (ent->d_name, e->d_name);	979	strcpy (ent->d_name, e->d_name);
688	}	980	}
689	else	981	else
690	*res = 0;	982	*res = 0;
691		983
692	pthread_mutex_unlock (&readdirlock);	984	X_UNLOCK (readdirlock);
693		985
694	errno = errorno;	986	errno = errorno;
695	return e ? 0 : -1;	987	return e ? 0 : -1;
696	}	988	}
697	#endif	989	#endif
698		990
699	/* sendfile always needs emulation */	991	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	992	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
701	{	993	{
702	ssize_t res;	994	ssize_t res;
703		995
704	if (!count)	996	if (!count)
705	return 0;	997	return 0;
…		…
716	{	1008	{
717	off_t sbytes;	1009	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719		1011
720	if (res < 0 && sbytes)	1012	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
722	res = sbytes;	1014	res = sbytes;
723	}	1015	}
724		1016
725	# elif __hpux	1017	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
782		1074
783	offset += cnt;	1075	offset += cnt;
784	res += cnt;	1076	res += cnt;
785	count -= cnt;	1077	count -= cnt;
786	}	1078	}
787
788	fBUF;
789	}	1079	}
790		1080
791	return res;	1081	return res;
792	}	1082	}
793		1083
794	/* read a full directory */	1084	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)	1085	static void scandir_ (aio_req req, worker *self)
796	{	1086	{
797	DIR *dirp;	1087	DIR *dirp;
798	union	1088	union
799	{	1089	{
800	struct dirent d;	1090	X_DIRENT d;
801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
802	} *u;	1092	} *u;
803	struct dirent *entp;	1093	X_DIRENT *entp;
804	char *name, *names;	1094	char *name, *names;
805	int memlen = 4096;	1095	int memlen = 4096;
806	int memofs = 0;	1096	int memofs = 0;
807	int res = 0;	1097	int res = 0;
808	int errorno;
809		1098
810	dirp = opendir (path);	1099	X_LOCK (wrklock);
811	if (!dirp)	1100	self->dirp = dirp = opendir (req->ptr1);
812	return -1;
813
814	u = malloc (sizeof (*u));	1101	self->dbuf = u = malloc (sizeof (*u));
		1102	req->flags |= FLAG_PTR2_FREE;
815	names = malloc (memlen);	1103	req->ptr2 = names = malloc (memlen);
		1104	X_UNLOCK (wrklock);
816		1105
817	if (u && names)	1106	if (dirp && u && names)
818	for (;;)	1107	for (;;)
819	{	1108	{
820	errno = 0;	1109	errno = 0;
821	readdir_r (dirp, &u->d, &entp);	1110	readdir_r (dirp, &u->d, &entp);
822		1111
…		…
832	res++;	1121	res++;
833		1122
834	while (memofs + len > memlen)	1123	while (memofs + len > memlen)
835	{	1124	{
836	memlen *= 2;	1125	memlen *= 2;
		1126	X_LOCK (wrklock);
837	names = realloc (names, memlen);	1127	req->ptr2 = names = realloc (names, memlen);
		1128	X_UNLOCK (wrklock);
		1129
838	if (!names)	1130	if (!names)
839	break;	1131	break;
840	}	1132	}
841		1133
842	memcpy (names + memofs, name, len);	1134	memcpy (names + memofs, name, len);
843	memofs += len;	1135	memofs += len;
844	}	1136	}
845	}	1137	}
846		1138
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	if (errorno)	1139	if (errno)
		1140	res = -1;
		1141
		1142	req->result = res;
		1143	}
		1144
		1145	/*****************************************************************************/
		1146
		1147	X_THREAD_PROC (aio_proc)
		1148	{
		1149	{//D
		1150	aio_req req;
		1151	struct timespec ts;
		1152	worker *self = (worker *)thr_arg;
		1153
		1154	/* try to distribute timeouts somewhat randomly */
		1155	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1156
		1157	for (;;)
852	{	1158	{
853	free (names);	1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
854	errno = errorno;
855	res = -1;
856	}
857		1160
858	*namesp = (void *)names;	1161	X_LOCK (reqlock);
859	return res;
860	}
861
862	/*****************************************************************************/
863
864	static void *aio_proc (void *thr_arg)
865	{
866	aio_req req;
867	int type;
868
869	do
870	{
871	pthread_mutex_lock (&reqlock);
872		1162
873	for (;;)	1163	for (;;)
874	{	1164	{
875	req = reqq_shift (&req_queue);	1165	self->req = req = reqq_shift (&req_queue);
876		1166
877	if (req)	1167	if (req)
878	break;	1168	break;
879		1169
880	pthread_cond_wait (&reqwait, &reqlock);	1170	++idle;
		1171
		1172	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1173	== ETIMEDOUT)
		1174	{
		1175	if (idle > max_idle)
		1176	{
		1177	--idle;
		1178	X_UNLOCK (reqlock);
		1179	X_LOCK (wrklock);
		1180	--started;
		1181	X_UNLOCK (wrklock);
		1182	goto quit;
		1183	}
		1184
		1185	/* we are allowed to idle, so do so without any timeout */
		1186	X_COND_WAIT (reqwait, reqlock);
		1187	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1188	}
		1189
		1190	--idle;
881	}	1191	}
882		1192
883	pthread_mutex_unlock (&reqlock);	1193	--nready;
		1194
		1195	X_UNLOCK (reqlock);
884		1196
885	errno = 0; /* strictly unnecessary */	1197	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887		1198
888	if (!(req->flags & FLAG_CANCELLED))	1199	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)	1200	switch (req->type)
890	{	1201	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1202	case REQ_READ: req->result = req->offs >= 0
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1203	? pread (req->int1, req->ptr1, req->size, req->offs)
		1204	: read (req->int1, req->ptr1, req->size); break;
		1205	case REQ_WRITE: req->result = req->offs >= 0
		1206	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1207	: write (req->int1, req->ptr1, req->size); break;
893		1208
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1209	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1210	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
896		1211
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1212	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1213	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1214	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
900		1215
		1216	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1217	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1218	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1219	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1220	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1221	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1222
901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1223	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
902	case REQ_CLOSE: req->result = close (req->fd); break;	1224	case REQ_CLOSE: req->result = close (req->int1); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1226	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1227	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1230	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1231	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1232	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
908		1233
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;	1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1236	case REQ_READDIR: scandir_ (req, self); break;
912		1237
913	case REQ_BUSY:	1238	case REQ_BUSY:
		1239	#ifdef _WIN32
		1240	Sleep (req->nv1 * 1000.);
		1241	#else
914	{	1242	{
915	struct timeval tv;	1243	struct timeval tv;
916		1244
917	tv.tv_sec = req->fd;	1245	tv.tv_sec = req->nv1;
918	tv.tv_usec = req->fd2;	1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
919		1247
920	req->result = select (0, 0, 0, 0, &tv);	1248	req->result = select (0, 0, 0, 0, &tv);
921	}	1249	}
		1250	#endif
		1251	break;
		1252
		1253	case REQ_UTIME:
		1254	case REQ_FUTIME:
		1255	{
		1256	struct timeval tv[2];
		1257	struct timeval *times;
		1258
		1259	if (req->nv1 != -1. || req->nv2 != -1.)
		1260	{
		1261	tv[0].tv_sec = req->nv1;
		1262	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1263	tv[1].tv_sec = req->nv2;
		1264	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1265
		1266	times = tv;
		1267	}
		1268	else
		1269	times = 0;
		1270
		1271
		1272	req->result = req->type == REQ_FUTIME
		1273	? futimes (req->int1, times)
		1274	: utimes (req->ptr1, times);
		1275	}
922		1276
923	case REQ_GROUP:	1277	case REQ_GROUP:
924	case REQ_NOP:	1278	case REQ_NOP:
		1279	break;
		1280
925	case REQ_QUIT:	1281	case REQ_QUIT:
926	break;	1282	goto quit;
927		1283
928	default:	1284	default:
929	req->result = ENOSYS;	1285	req->result = -1;
930	break;	1286	break;
931	}	1287	}
932		1288
933	req->errorno = errno;	1289	req->errorno = errno;
934		1290
935	pthread_mutex_lock (&reslock);	1291	X_LOCK (reslock);
		1292
		1293	++npending;
936		1294
937	if (!reqq_push (&res_queue, req))	1295	if (!reqq_push (&res_queue, req))
		1296	{
938	/* write a dummy byte to the pipe so fh becomes ready */	1297	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);	1298	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
940		1299
941	pthread_mutex_unlock (&reslock);	1300	/* optionally signal the main thread asynchronously */
		1301	if (main_sig)
		1302	pthread_kill (main_tid, main_sig);
		1303	}
		1304
		1305	self->req = 0;
		1306	worker_clear (self);
		1307
		1308	X_UNLOCK (reslock);
942	}	1309	}
943	while (type != REQ_QUIT);	1310
		1311	quit:
		1312	X_LOCK (wrklock);
		1313	worker_free (self);
		1314	X_UNLOCK (wrklock);
944		1315
945	return 0;	1316	return 0;
		1317	}//D
946	}	1318	}
947		1319
948	/*****************************************************************************/	1320	/*****************************************************************************/
949		1321
950	static void atfork_prepare (void)	1322	static void atfork_prepare (void)
951	{	1323	{
952	pthread_mutex_lock (&reqlock);	1324	X_LOCK (wrklock);
953	pthread_mutex_lock (&reslock);	1325	X_LOCK (reqlock);
		1326	X_LOCK (reslock);
954	#if !HAVE_PREADWRITE	1327	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);	1328	X_LOCK (preadwritelock);
956	#endif	1329	#endif
957	#if !HAVE_READDIR_R	1330	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);	1331	X_LOCK (readdirlock);
959	#endif	1332	#endif
960	}	1333	}
961		1334
962	static void atfork_parent (void)	1335	static void atfork_parent (void)
963	{	1336	{
964	#if !HAVE_READDIR_R	1337	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);	1338	X_UNLOCK (readdirlock);
966	#endif	1339	#endif
967	#if !HAVE_PREADWRITE	1340	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);	1341	X_UNLOCK (preadwritelock);
969	#endif	1342	#endif
970	pthread_mutex_unlock (&reslock);	1343	X_UNLOCK (reslock);
971	pthread_mutex_unlock (&reqlock);	1344	X_UNLOCK (reqlock);
		1345	X_UNLOCK (wrklock);
972	}	1346	}
973		1347
974	static void atfork_child (void)	1348	static void atfork_child (void)
975	{	1349	{
976	aio_req prv;	1350	aio_req prv;
977		1351
978	started = 0;
979
980	while (prv = reqq_shift (&req_queue))	1352	while (prv = reqq_shift (&req_queue))
981	req_free (prv);	1353	req_destroy (prv);
982		1354
983	while (prv = reqq_shift (&res_queue))	1355	while (prv = reqq_shift (&res_queue))
984	req_free (prv);	1356	req_destroy (prv);
985		1357
		1358	while (wrk_first.next != &wrk_first)
		1359	{
		1360	worker *wrk = wrk_first.next;
		1361
		1362	if (wrk->req)
		1363	req_destroy (wrk->req);
		1364
		1365	worker_clear (wrk);
		1366	worker_free (wrk);
		1367	}
		1368
		1369	started = 0;
		1370	idle = 0;
		1371	nreqs = 0;
		1372	nready = 0;
		1373	npending = 0;
		1374
986	close (respipe [0]);	1375	respipe_close (respipe [0]);
987	close (respipe [1]);	1376	respipe_close (respipe [1]);
		1377
988	create_pipe ();	1378	create_pipe (respipe);
989		1379
990	atfork_parent ();	1380	atfork_parent ();
991	}	1381	}
992		1382
993	#define dREQ \	1383	#define dREQ \
…		…
1016	PROTOTYPES: ENABLE	1406	PROTOTYPES: ENABLE
1017		1407
1018	BOOT:	1408	BOOT:
1019	{	1409	{
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	1410	HV *stash = gv_stashpv ("IO::AIO", 1);
		1411
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1414	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1415	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1416	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1417	#ifdef _WIN32
		1418	X_MUTEX_CHECK (wrklock);
		1419	X_MUTEX_CHECK (reslock);
		1420	X_MUTEX_CHECK (reqlock);
		1421	X_MUTEX_CHECK (reqwait);
		1422	X_MUTEX_CHECK (preadwritelock);
		1423	X_MUTEX_CHECK (readdirlock);
1024		1424
1025	create_pipe ();	1425	X_COND_CHECK (reqwait);
		1426	#else
		1427	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1428	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1429	#endif
		1430
		1431	create_pipe (respipe);
		1432
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1027	}	1434	}
1028		1435
1029	void	1436	void
1030	min_parallel (nthreads)	1437	max_poll_reqs (int nreqs)
1031	int nthreads
1032	PROTOTYPE: $	1438	PROTOTYPE: $
		1439	CODE:
		1440	max_poll_reqs = nreqs;
1033		1441
1034	void	1442	void
1035	max_parallel (nthreads)	1443	max_poll_time (double nseconds)
1036	int nthreads
1037	PROTOTYPE: $	1444	PROTOTYPE: $
		1445	CODE:
		1446	max_poll_time = nseconds * AIO_TICKS;
		1447
		1448	void
		1449	min_parallel (int nthreads)
		1450	PROTOTYPE: $
		1451
		1452	void
		1453	max_parallel (int nthreads)
		1454	PROTOTYPE: $
		1455
		1456	void
		1457	max_idle (int nthreads)
		1458	PROTOTYPE: $
		1459	CODE:
		1460	set_max_idle (nthreads);
1038		1461
1039	int	1462	int
1040	max_outstanding (nreqs)	1463	max_outstanding (int maxreqs)
1041	int nreqs	1464	PROTOTYPE: $
1042	PROTOTYPE: $
1043	CODE:	1465	CODE:
1044	RETVAL = max_outstanding;	1466	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;	1467	max_outstanding = maxreqs;
		1468	OUTPUT:
		1469	RETVAL
1046		1470
1047	void	1471	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1472	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1049	SV * pathname
1050	int flags
1051	int mode
1052	SV * callback
1053	PROTOTYPE: $$$;$	1473	PROTOTYPE: $$$;$
1054	PPCODE:	1474	PPCODE:
1055	{	1475	{
1056	dREQ;	1476	dREQ;
1057		1477
1058	req->type = REQ_OPEN;	1478	req->type = REQ_OPEN;
1059	req->data = newSVsv (pathname);	1479	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	1480	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	1481	req->int1 = flags;
1062	req->mode = mode;	1482	req->mode = mode;
1063		1483
1064	REQ_SEND;	1484	REQ_SEND;
1065	}	1485	}
1066		1486
1067	void	1487	void
1068	aio_close (fh,callback=&PL_sv_undef)	1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1069	SV * fh
1070	SV * callback
1071	PROTOTYPE: $;$	1489	PROTOTYPE: $;$
1072	ALIAS:	1490	ALIAS:
1073	aio_close = REQ_CLOSE	1491	aio_close = REQ_CLOSE
1074	aio_fsync = REQ_FSYNC	1492	aio_fsync = REQ_FSYNC
1075	aio_fdatasync = REQ_FDATASYNC	1493	aio_fdatasync = REQ_FDATASYNC
1076	PPCODE:	1494	PPCODE:
1077	{	1495	{
1078	dREQ;	1496	dREQ;
1079		1497
1080	req->type = ix;	1498	req->type = ix;
1081	req->fh = newSVsv (fh);	1499	req->sv1 = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1500	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083		1501
1084	REQ_SEND (req);	1502	REQ_SEND (req);
1085	}	1503	}
1086		1504
1087	void	1505	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1506	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1089	SV * fh
1090	UV offset
1091	UV length
1092	SV * data
1093	UV dataoffset
1094	SV * callback
1095	ALIAS:	1507	ALIAS:
1096	aio_read = REQ_READ	1508	aio_read = REQ_READ
1097	aio_write = REQ_WRITE	1509	aio_write = REQ_WRITE
1098	PROTOTYPE: $$$$$;$	1510	PROTOTYPE: $$$$$;$
1099	PPCODE:	1511	PPCODE:
1100	{	1512	{
1101	aio_req req;
1102	STRLEN svlen;	1513	STRLEN svlen;
1103	char *svptr = SvPVbyte (data, svlen);	1514	char *svptr = SvPVbyte (data, svlen);
		1515	UV len = SvUV (length);
1104		1516
1105	SvUPGRADE (data, SVt_PV);	1517	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);	1518	SvPOK_on (data);
1107		1519
1108	if (dataoffset < 0)	1520	if (dataoffset < 0)
1109	dataoffset += svlen;	1521	dataoffset += svlen;
1110		1522
1111	if (dataoffset < 0 || dataoffset > svlen)	1523	if (dataoffset < 0 || dataoffset > svlen)
1112	croak ("data offset outside of string");	1524	croak ("dataoffset outside of data scalar");
1113		1525
1114	if (ix == REQ_WRITE)	1526	if (ix == REQ_WRITE)
1115	{	1527	{
1116	/* write: check length and adjust. */	1528	/* write: check length and adjust. */
1117	if (length < 0 || length + dataoffset > svlen)	1529	if (!SvOK (length) || len + dataoffset > svlen)
1118	length = svlen - dataoffset;	1530	len = svlen - dataoffset;
1119	}	1531	}
1120	else	1532	else
1121	{	1533	{
1122	/* read: grow scalar as necessary */	1534	/* read: grow scalar as necessary */
1123	svptr = SvGROW (data, length + dataoffset);	1535	svptr = SvGROW (data, len + dataoffset + 1);
1124	}	1536	}
1125		1537
1126	if (length < 0)	1538	if (len < 0)
1127	croak ("length must not be negative");	1539	croak ("length must not be negative");
1128		1540
1129	{	1541	{
1130	dREQ;	1542	dREQ;
1131		1543
1132	req->type = ix;	1544	req->type = ix;
1133	req->fh = newSVsv (fh);	1545	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1135	: IoOFP (sv_2io (fh)));	1547	: IoOFP (sv_2io (fh)));
		1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136	req->offset = offset;	1549	req->size = len;
1137	req->length = length;
1138	req->data = SvREFCNT_inc (data);	1550	req->sv2 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1551	req->ptr1 = (char *)svptr + dataoffset;
		1552	req->stroffset = dataoffset;
1140		1553
1141	if (!SvREADONLY (data))	1554	if (!SvREADONLY (data))
1142	{	1555	{
1143	SvREADONLY_on (data);	1556	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1557	req->flags |= FLAG_SV2_RO_OFF;
1145	}	1558	}
1146		1559
1147	REQ_SEND;	1560	REQ_SEND;
1148	}	1561	}
1149	}	1562	}
1150		1563
1151	void	1564	void
		1565	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1566	PROTOTYPE: $$;$
		1567	PPCODE:
		1568	{
		1569	SV *data;
		1570	dREQ;
		1571
		1572	data = newSV (NAME_MAX);
		1573	SvPOK_on (data);
		1574
		1575	req->type = REQ_READLINK;
		1576	req->sv1 = newSVsv (path);
		1577	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1578	req->sv2 = data;
		1579	req->ptr1 = SvPVbyte_nolen (data);
		1580
		1581	REQ_SEND;
		1582	}
		1583
		1584	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1585	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1153	SV * out_fh
1154	SV * in_fh
1155	UV in_offset
1156	UV length
1157	SV * callback
1158	PROTOTYPE: $$$$;$	1586	PROTOTYPE: $$$$;$
1159	PPCODE:	1587	PPCODE:
1160	{	1588	{
1161	dREQ;	1589	dREQ;
1162		1590
1163	req->type = REQ_SENDFILE;	1591	req->type = REQ_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1592	req->sv1 = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166	req->fh2 = newSVsv (in_fh);	1594	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168	req->offset = in_offset;	1596	req->offs = SvVAL64 (in_offset);
1169	req->length = length;	1597	req->size = length;
1170		1598
1171	REQ_SEND;	1599	REQ_SEND;
1172	}	1600	}
1173		1601
1174	void	1602	void
1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1603	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	IV length
1179	SV * callback
1180	PROTOTYPE: $$$;$	1604	PROTOTYPE: $$$;$
1181	PPCODE:	1605	PPCODE:
1182	{	1606	{
1183	dREQ;	1607	dREQ;
1184		1608
1185	req->type = REQ_READAHEAD;	1609	req->type = REQ_READAHEAD;
1186	req->fh = newSVsv (fh);	1610	req->sv1 = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1188	req->offset = offset;	1612	req->offs = SvVAL64 (offset);
1189	req->length = length;	1613	req->size = length;
1190		1614
1191	REQ_SEND;	1615	REQ_SEND;
1192	}	1616	}
1193		1617
1194	void	1618	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1196	SV * fh_or_path
1197	SV * callback
1198	ALIAS:	1620	ALIAS:
1199	aio_stat = REQ_STAT	1621	aio_stat = REQ_STAT
1200	aio_lstat = REQ_LSTAT	1622	aio_lstat = REQ_LSTAT
1201	PPCODE:	1623	PPCODE:
1202	{	1624	{
1203	dREQ;	1625	dREQ;
1204		1626
1205	New (0, req->statdata, 1, Stat_t);	1627	req->ptr2 = malloc (sizeof (Stat_t));
1206	if (!req->statdata)	1628	if (!req->ptr2)
1207	{	1629	{
1208	req_free (req);	1630	req_destroy (req);
1209	croak ("out of memory during aio_req->statdata allocation");	1631	croak ("out of memory during aio_stat statdata allocation");
1210	}	1632	}
		1633
		1634	req->flags |= FLAG_PTR2_FREE;
		1635	req->sv1 = newSVsv (fh_or_path);
1211		1636
1212	if (SvPOK (fh_or_path))	1637	if (SvPOK (fh_or_path))
1213	{	1638	{
1214	req->type = ix;	1639	req->type = ix;
1215	req->data = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	1640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	1641	}
1218	else	1642	else
1219	{	1643	{
1220	req->type = REQ_FSTAT;	1644	req->type = REQ_FSTAT;
1221	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	1646	}
1224		1647
1225	REQ_SEND;	1648	REQ_SEND;
1226	}	1649	}
1227		1650
1228	void	1651	void
		1652	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1653	PPCODE:
		1654	{
		1655	dREQ;
		1656
		1657	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1658	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1659	req->sv1 = newSVsv (fh_or_path);
		1660
		1661	if (SvPOK (fh_or_path))
		1662	{
		1663	req->type = REQ_UTIME;
		1664	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1665	}
		1666	else
		1667	{
		1668	req->type = REQ_FUTIME;
		1669	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1670	}
		1671
		1672	REQ_SEND;
		1673	}
		1674
		1675	void
		1676	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1677	PPCODE:
		1678	{
		1679	dREQ;
		1680
		1681	req->sv1 = newSVsv (fh_or_path);
		1682	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1683
		1684	if (SvPOK (fh_or_path))
		1685	{
		1686	req->type = REQ_TRUNCATE;
		1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1688	}
		1689	else
		1690	{
		1691	req->type = REQ_FTRUNCATE;
		1692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1693	}
		1694
		1695	REQ_SEND;
		1696	}
		1697
		1698	void
		1699	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1700	PPCODE:
		1701	{
		1702	dREQ;
		1703
		1704	req->mode = mode;
		1705	req->sv1 = newSVsv (fh_or_path);
		1706
		1707	if (SvPOK (fh_or_path))
		1708	{
		1709	req->type = REQ_CHMOD;
		1710	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1711	}
		1712	else
		1713	{
		1714	req->type = REQ_FCHMOD;
		1715	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1716	}
		1717
		1718	REQ_SEND;
		1719	}
		1720
		1721	void
		1722	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1723	PPCODE:
		1724	{
		1725	dREQ;
		1726
		1727	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1728	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1729	req->sv1 = newSVsv (fh_or_path);
		1730
		1731	if (SvPOK (fh_or_path))
		1732	{
		1733	req->type = REQ_CHOWN;
		1734	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1735	}
		1736	else
		1737	{
		1738	req->type = REQ_FCHOWN;
		1739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1740	}
		1741
		1742	REQ_SEND;
		1743	}
		1744
		1745	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1230	SV * pathname
1231	SV * callback
1232	ALIAS:	1747	ALIAS:
1233	aio_unlink = REQ_UNLINK	1748	aio_unlink = REQ_UNLINK
1234	aio_rmdir = REQ_RMDIR	1749	aio_rmdir = REQ_RMDIR
1235	aio_readdir = REQ_READDIR	1750	aio_readdir = REQ_READDIR
1236	PPCODE:	1751	PPCODE:
1237	{	1752	{
1238	dREQ;	1753	dREQ;
1239		1754
1240	req->type = ix;	1755	req->type = ix;
1241	req->data = newSVsv (pathname);	1756	req->sv1 = newSVsv (pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	1757	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1758
		1759	REQ_SEND;
		1760	}
		1761
		1762	void
		1763	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1764	PPCODE:
		1765	{
		1766	dREQ;
1243		1767
		1768	req->type = REQ_MKDIR;
		1769	req->sv1 = newSVsv (pathname);
		1770	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1771	req->mode = mode;
		1772
1244	REQ_SEND;	1773	REQ_SEND;
1245	}	1774	}
1246		1775
1247	void	1776	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1249	SV * oldpath
1250	SV * newpath
1251	SV * callback
1252	ALIAS:	1778	ALIAS:
1253	aio_link = REQ_LINK	1779	aio_link = REQ_LINK
1254	aio_symlink = REQ_SYMLINK	1780	aio_symlink = REQ_SYMLINK
1255	aio_rename = REQ_RENAME	1781	aio_rename = REQ_RENAME
1256	PPCODE:	1782	PPCODE:
1257	{	1783	{
1258	dREQ;	1784	dREQ;
1259		1785
1260	req->type = ix;	1786	req->type = ix;
1261	req->fh = newSVsv (oldpath);	1787	req->sv2 = newSVsv (oldpath);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1788	req->ptr2 = SvPVbyte_nolen (req->sv2);
1263	req->data = newSVsv (newpath);	1789	req->sv1 = newSVsv (newpath);
1264	req->dataptr = SvPVbyte_nolen (req->data);	1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1265		1791
1266	REQ_SEND;	1792	REQ_SEND;
1267	}	1793	}
1268		1794
1269	void	1795	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1271	double delay
1272	SV * callback
1273	PPCODE:	1797	PPCODE:
1274	{	1798	{
1275	dREQ;	1799	dREQ;
		1800
		1801	req->type = REQ_MKNOD;
		1802	req->sv1 = newSVsv (pathname);
		1803	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1804	req->mode = (mode_t)mode;
		1805	req->offs = dev;
		1806
		1807	REQ_SEND;
		1808	}
		1809
		1810	void
		1811	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1812	PPCODE:
		1813	{
		1814	dREQ;
1276		1815
1277	req->type = REQ_BUSY;	1816	req->type = REQ_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1817	req->nv1 = delay < 0. ? 0. : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1280		1818
1281	REQ_SEND;	1819	REQ_SEND;
1282	}	1820	}
1283		1821
1284	void	1822	void
1285	aio_group (callback=&PL_sv_undef)	1823	aio_group (SV *callback=&PL_sv_undef)
1286	SV * callback
1287	PROTOTYPE: ;$	1824	PROTOTYPE: ;$
1288	PPCODE:	1825	PPCODE:
1289	{	1826	{
1290	dREQ;	1827	dREQ;
1291		1828
1292	req->type = REQ_GROUP;	1829	req->type = REQ_GROUP;
		1830
1293	req_send (req);	1831	req_send (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1296	}	1833	}
1297		1834
1298	void	1835	void
1299	aio_nop (callback=&PL_sv_undef)	1836	aio_nop (SV *callback=&PL_sv_undef)
1300	SV * callback
1301	PPCODE:	1837	PPCODE:
1302	{	1838	{
1303	dREQ;	1839	dREQ;
1304		1840
1305	req->type = REQ_NOP;	1841	req->type = REQ_NOP;
1306		1842
1307	REQ_SEND;	1843	REQ_SEND;
1308	}	1844	}
1309		1845
1310	void	1846	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1847	aioreq_pri (int pri = 0)
1312	CODE:	1848	PROTOTYPE: ;$
		1849	CODE:
		1850	RETVAL = next_pri - PRI_BIAS;
		1851	if (items > 0)
		1852	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1853	if (pri < PRI_MIN) pri = PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1854	if (pri > PRI_MAX) pri = PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1855	next_pri = pri + PRI_BIAS;
		1856	}
		1857	OUTPUT:
		1858	RETVAL
1316		1859
1317	void	1860	void
1318	aioreq_nice (int nice = 0)	1861	aioreq_nice (int nice = 0)
1319	CODE:	1862	CODE:
1320	nice = next_pri - nice;	1863	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1864	if (nice < PRI_MIN) nice = PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1865	if (nice > PRI_MAX) nice = PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1866	next_pri = nice + PRI_BIAS;
1324		1867
1325	void	1868	void
1326	flush ()	1869	flush ()
1327	PROTOTYPE:	1870	PROTOTYPE:
1328	CODE:	1871	CODE:
…		…
1330	{	1873	{
1331	poll_wait ();	1874	poll_wait ();
1332	poll_cb ();	1875	poll_cb ();
1333	}	1876	}
1334		1877
1335	void	1878	int
1336	poll()	1879	poll()
1337	PROTOTYPE:	1880	PROTOTYPE:
1338	CODE:	1881	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();	1882	poll_wait ();
1342	poll_cb ();	1883	RETVAL = poll_cb ();
1343	}	1884	OUTPUT:
		1885	RETVAL
1344		1886
1345	int	1887	int
1346	poll_fileno()	1888	poll_fileno()
1347	PROTOTYPE:	1889	PROTOTYPE:
1348	CODE:	1890	CODE:
…		…
1360		1902
1361	void	1903	void
1362	poll_wait()	1904	poll_wait()
1363	PROTOTYPE:	1905	PROTOTYPE:
1364	CODE:	1906	CODE:
1365	if (nreqs)
1366	poll_wait ();	1907	poll_wait ();
		1908
		1909	void
		1910	setsig (int signum = SIGIO)
		1911	PROTOTYPE: ;$
		1912	CODE:
		1913	{
		1914	if (block_sig_level)
		1915	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1916
		1917	X_LOCK (reslock);
		1918	main_tid = pthread_self ();
		1919	main_sig = signum;
		1920	X_UNLOCK (reslock);
		1921
		1922	if (main_sig && npending)
		1923	pthread_kill (main_tid, main_sig);
		1924	}
		1925
		1926	void
		1927	aio_block (SV *cb)
		1928	PROTOTYPE: &
		1929	PPCODE:
		1930	{
		1931	int count;
		1932
		1933	block_sig ();
		1934	PUSHMARK (SP);
		1935	PUTBACK;
		1936	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1937	SPAGAIN;
		1938	unblock_sig ();
		1939
		1940	if (SvTRUE (ERRSV))
		1941	croak (0);
		1942
		1943	XSRETURN (count);
		1944	}
1367		1945
1368	int	1946	int
1369	nreqs()	1947	nreqs()
1370	PROTOTYPE:	1948	PROTOTYPE:
1371	CODE:	1949	CODE:
1372	RETVAL = nreqs;	1950	RETVAL = nreqs;
1373	OUTPUT:	1951	OUTPUT:
1374	RETVAL	1952	RETVAL
1375		1953
		1954	int
		1955	nready()
		1956	PROTOTYPE:
		1957	CODE:
		1958	RETVAL = get_nready ();
		1959	OUTPUT:
		1960	RETVAL
		1961
		1962	int
		1963	npending()
		1964	PROTOTYPE:
		1965	CODE:
		1966	RETVAL = get_npending ();
		1967	OUTPUT:
		1968	RETVAL
		1969
		1970	int
		1971	nthreads()
		1972	PROTOTYPE:
		1973	CODE:
		1974	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1975	RETVAL = started;
		1976	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1977	OUTPUT:
		1978	RETVAL
		1979
1376	PROTOTYPES: DISABLE	1980	PROTOTYPES: DISABLE
1377		1981
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1983
1380	void	1984	void
…		…
1395	PPCODE:	1999	PPCODE:
1396	{	2000	{
1397	int i;	2001	int i;
1398	aio_req req;	2002	aio_req req;
1399		2003
		2004	if (main_sig && !block_sig_level)
		2005	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2006
1400	if (grp->fd == 2)	2007	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2008	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		2009
1403	for (i = 1; i < items; ++i )	2010	for (i = 1; i < items; ++i )
1404	{	2011	{
1405	if (GIMME_V != G_VOID)	2012	if (GIMME_V != G_VOID)
…		…
1407		2014
1408	req = SvAIO_REQ (ST (i));	2015	req = SvAIO_REQ (ST (i));
1409		2016
1410	if (req)	2017	if (req)
1411	{	2018	{
1412	++grp->length;	2019	++grp->size;
1413	req->grp = grp;	2020	req->grp = grp;
1414		2021
1415	req->grp_prev = 0;	2022	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;	2023	req->grp_next = grp->grp_first;
1417		2024
…		…
1422	}	2029	}
1423	}	2030	}
1424	}	2031	}
1425		2032
1426	void	2033	void
		2034	cancel_subs (aio_req_ornot req)
		2035	CODE:
		2036	req_cancel_subs (req);
		2037
		2038	void
1427	result (aio_req grp, ...)	2039	result (aio_req grp, ...)
1428	CODE:	2040	CODE:
1429	{	2041	{
1430	int i;	2042	int i;
		2043	AV *av;
		2044
		2045	grp->errorno = errno;
		2046
1431	AV *av = newAV ();	2047	av = newAV ();
1432		2048
1433	for (i = 1; i < items; ++i )	2049	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	2050	av_push (av, newSVsv (ST (i)));
1435		2051
1436	SvREFCNT_dec (grp->data);	2052	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	2053	grp->sv1 = (SV *)av;
1438	}	2054	}
		2055
		2056	void
		2057	errno (aio_req grp, int errorno = errno)
		2058	CODE:
		2059	grp->errorno = errorno;
1439		2060
1440	void	2061	void
1441	limit (aio_req grp, int limit)	2062	limit (aio_req grp, int limit)
1442	CODE:	2063	CODE:
1443	grp->fd2 = limit;	2064	grp->int2 = limit;
1444	aio_grp_feed (grp);	2065	aio_grp_feed (grp);
1445		2066
1446	void	2067	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	2068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	2069	CODE:
1449	{	2070	{
1450	SvREFCNT_dec (grp->fh2);	2071	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	2072	grp->sv2 = newSVsv (callback);
1452		2073
1453	if (grp->fd2 <= 0)	2074	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	2075	grp->int2 = 2;
1455		2076
1456	aio_grp_feed (grp);	2077	aio_grp_feed (grp);
1457	}	2078	}
1458		2079

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