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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC vs.
Revision 1.104 by root, Sun Jul 8 11:05:36 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 send
		30	# undef recv
		31	# undef stat
		32	# undef fstat
		33	# define lstat stat
		34	# undef truncate
		35	# undef ftruncate
		36	# undef open
		37	# undef close
		38	# undef unlink
		39	# undef rmdir
		40	# undef rename
		41	# undef lseek
		42
		43	# define chown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchown(a,b,c) (errno = ENOSYS, -1)
		45	# define fchmod(a,b) (errno = ENOSYS, -1)
		46	# define symlink(a,b) (errno = ENOSYS, -1)
		47	# define readlink(a,b,c) (errno = ENOSYS, -1)
		48	# define mknod(a,b,c) (errno = ENOSYS, -1)
		49	# define truncate(a,b) (errno = ENOSYS, -1)
		50	# define ftruncate(fd,o) chsize ((fd), (o))
		51	# define fsync(fd) _commit (fd)
		52	# define opendir(fd) (errno = ENOSYS, 0)
		53	# define readdir(fd) (errno = ENOSYS, -1)
		54	# define closedir(fd) (errno = ENOSYS, -1)
		55	# define mkdir(a,b) mkdir (a)
		56
		57	#else
		58
		59	# include "autoconf/config.h"
		60	# include <sys/time.h>
		61	# include <sys/select.h>
		62	# include <unistd.h>
		63	# include <utime.h>
		64	# include <signal.h>
		65	typedef struct dirent X_DIRENT;
		66
		67	#endif
28		68
29	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
30	# if __linux	70	# if __linux
31	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
32	# elif __freebsd	72	# elif __freebsd
…		…
39	# else	79	# else
40	# error sendfile support requested but not available	80	# error sendfile support requested but not available
41	# endif	81	# endif
42	#endif	82	#endif
43		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
44	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	88	#ifndef NAME_MAX
46	# define NAME_MAX 4096	89	# define NAME_MAX 4096
47	#endif	90	#endif
48		91
49	#if __ia64
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif
56
57	/* buffer size for various temporary buffers */	92	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	93	#define AIO_BUFSIZE 65536
59		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
		98	#else
		99	# define SvVAL64 SvNV
		100	#endif
		101
60	#define dBUF \	102	#define dBUF \
		103	char *aio_buf; \
		104	X_LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		106	X_UNLOCK (wrklock); \
62	if (!aio_buf) \	107	if (!aio_buf) \
63	return -1;	108	return -1;
64		109
65	#define fBUF free (aio_buf)	110	typedef SV SV8; /* byte-sv, used for argument-checking */
66		111
67	enum {	112	enum {
68	REQ_QUIT,	113	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
71	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
72	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,
73	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	126	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	127	REQ_BUSY,
79	};	128	};
80		129
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	131	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		132
84	typedef struct aio_cb	133	typedef struct aio_cb
85	{	134	{
86	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
87		136
88	SV *data, *callback;	137	SV *callback;
89	SV *fh, *fh2;	138	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	139	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	140	off_t offs;
93	size_t length;	141	size_t size;
94	ssize_t result;	142	ssize_t result;
		143	double nv1, nv2;
95		144
96	STRLEN dataoffset;	145	STRLEN stroffset;
97	int type;	146	int type;
98	int fd, fd2;	147	int int1, int2, int3;
99	int errorno;	148	int errorno;
100	mode_t mode; /* open */	149	mode_t mode; /* open */
101		150
102	unsigned char flags;	151	unsigned char flags;
103	unsigned char pri;	152	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	156	} aio_cb;
108		157
109	enum {	158	enum {
110	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) */
111	};	162	};
112		163
113	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
115		166
…		…
117	PRI_MIN = -4,	168	PRI_MIN = -4,
118	PRI_MAX = 4,	169	PRI_MAX = 4,
119		170
120	DEFAULT_PRI = 0,	171	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	172	PRI_BIAS = -PRI_MIN,
		173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};	174	};
123		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
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;	222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125		223
126	static int started, wanted;	224	static unsigned int started, idle, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;
129	static int respipe [2];
130		225
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	226	/* worker threads management */
132	# 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
133	#else	310	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
135	#endif	316	#endif
136		317
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	318	/*
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	319	* a somewhat faster data structure might be nice, but
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	320	* with 8 priorities this actually needs <20 insns
		321	* per shift, the most expensive operation.
		322	*/
		323	typedef struct {
		324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		325	int size;
		326	} reqq;
140		327
141	static volatile aio_req reqs, reqe; /* queue start, queue end */	328	static reqq req_queue;
142	static volatile aio_req ress, rese; /* queue start, queue end */	329	static reqq res_queue;
143		330
		331	int reqq_push (reqq *q, aio_req req)
		332	{
		333	int pri = req->pri;
		334	req->next = 0;
		335
		336	if (q->qe[pri])
		337	{
		338	q->qe[pri]->next = req;
		339	q->qe[pri] = req;
		340	}
		341	else
		342	q->qe[pri] = q->qs[pri] = req;
		343
		344	return q->size++;
		345	}
		346
		347	aio_req reqq_shift (reqq *q)
		348	{
		349	int pri;
		350
		351	if (!q->size)
		352	return 0;
		353
		354	--q->size;
		355
		356	for (pri = NUM_PRI; pri--; )
		357	{
		358	aio_req req = q->qs[pri];
		359
		360	if (req)
		361	{
		362	if (!(q->qs[pri] = req->next))
		363	q->qe[pri] = 0;
		364
		365	return req;
		366	}
		367	}
		368
		369	abort ();
		370	}
		371
		372	static int poll_cb ();
144	static void req_invoke (aio_req req);	373	static int req_invoke (aio_req req);
		374	static void req_destroy (aio_req req);
145	static void req_free (aio_req req);	375	static void req_cancel (aio_req req);
146		376
147	/* must be called at most once */	377	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
149	{	379	{
150	if (!req->self)	380	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	399	}
170		400
171	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
172	{	402	{
		403	block_sig ();
		404
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
174	{	406	{
175	int old_len = grp->length;	407	int old_len = grp->size;
176		408
177	if (grp->fh2 && SvOK (grp->fh2))	409	if (grp->sv2 && SvOK (grp->sv2))
178	{	410	{
179	dSP;	411	dSP;
180		412
181	ENTER;	413	ENTER;
182	SAVETMPS;	414	SAVETMPS;
183	PUSHMARK (SP);	415	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185	PUTBACK;	417	PUTBACK;
186	call_sv (grp->fh2, G_VOID | G_EVAL);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187	SPAGAIN;	419	SPAGAIN;
188	FREETMPS;	420	FREETMPS;
189	LEAVE;	421	LEAVE;
190	}	422	}
191		423
192	/* stop if no progress has been made */	424	/* stop if no progress has been made */
193	if (old_len == grp->length)	425	if (old_len == grp->size)
194	{	426	{
195	SvREFCNT_dec (grp->fh2);	427	SvREFCNT_dec (grp->sv2);
196	grp->fh2 = 0;	428	grp->sv2 = 0;
197	break;	429	break;
198	}	430	}
199	}	431	}
		432
		433	unblock_sig ();
200	}	434	}
201		435
202	static void aio_grp_dec (aio_req grp)	436	static void aio_grp_dec (aio_req grp)
203	{	437	{
204	--grp->length;	438	--grp->size;
205		439
206	/* call feeder, if applicable */	440	/* call feeder, if applicable */
207	aio_grp_feed (grp);	441	aio_grp_feed (grp);
208		442
209	/* finish, if done */	443	/* finish, if done */
210	if (!grp->length && grp->fd)	444	if (!grp->size && grp->int1)
211	{	445	{
		446	block_sig ();
		447
212	req_invoke (grp);	448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
213	req_free (grp);	455	req_destroy (grp);
		456	unblock_sig ();
214	}	457	}
215	}	458	}
216		459
217	static void poll_wait ()	460	static int req_invoke (aio_req req)
218	{	461	{
219	fd_set rfd;	462	dSP;
220		463
221	while (nreqs)	464	if (req->flags & FLAG_SV2_RO_OFF)
		465	SvREADONLY_off (req->sv2);
		466
		467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
222	{	468	{
223	aio_req req;	469	ENTER;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */	470	SAVETMPS;
225	pthread_mutex_lock (&reslock);	471	PUSHMARK (SP);
226	#endif	472	EXTEND (SP, 1);
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231		473
232	if (req)	474	switch (req->type)
233	return;	475	{
		476	case REQ_READDIR:
		477	{
		478	SV *rv = &PL_sv_undef;
234		479
235	FD_ZERO(&rfd);	480	if (req->result >= 0)
236	FD_SET(respipe [0], &rfd);	481	{
		482	int i;
		483	char *buf = req->ptr2;
		484	AV *av = newAV ();
237		485
238	select (respipe [0] + 1, &rfd, 0, 0, 0);	486	av_extend (av, req->result - 1);
		487
		488	for (i = 0; i < req->result; ++i)
		489	{
		490	SV *sv = newSVpv (buf, 0);
		491
		492	av_store (av, i, sv);
		493	buf += SvCUR (sv) + 1;
		494	}
		495
		496	rv = sv_2mortal (newRV_noinc ((SV *)av));
		497	}
		498
		499	PUSHs (rv);
		500	}
		501	break;
		502
		503	case REQ_OPEN:
		504	{
		505	/* convert fd to fh */
		506	SV *fh;
		507
		508	PUSHs (sv_2mortal (newSViv (req->result)));
		509	PUTBACK;
		510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		511	SPAGAIN;
		512
		513	fh = POPs;
		514	PUSHMARK (SP);
		515	XPUSHs (fh);
		516	}
		517	break;
		518
		519	case REQ_GROUP:
		520	req->int1 = 2; /* mark group as finished */
		521
		522	if (req->sv1)
		523	{
		524	int i;
		525	AV *av = (AV *)req->sv1;
		526
		527	EXTEND (SP, AvFILL (av) + 1);
		528	for (i = 0; i <= AvFILL (av); ++i)
		529	PUSHs (*av_fetch (av, i, 0));
		530	}
		531	break;
		532
		533	case REQ_NOP:
		534	case REQ_BUSY:
		535	break;
		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
		561	default:
		562	PUSHs (sv_2mortal (newSViv (req->result)));
		563	break;
		564	}
		565
		566	errno = req->errorno;
		567
		568	PUTBACK;
		569	call_sv (req->callback, G_VOID | G_EVAL);
		570	SPAGAIN;
		571
		572	FREETMPS;
		573	LEAVE;
239	}	574	}
240	}
241		575
242	static void req_invoke (aio_req req)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{
259	case REQ_READDIR:
260	{
261	SV *rv = &PL_sv_undef;
262
263	if (req->result >= 0)
264	{
265	char *buf = req->data2ptr;
266	AV *av = newAV ();
267
268	while (req->result)
269	{
270	SV *sv = newSVpv (buf, 0);
271
272	av_push (av, sv);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333
334	if (SvTRUE (ERRSV))
335	{
336	req_free (req);
337	croak (0);
338	}
339	}
340
341	static void req_free (aio_req req)
342	{
343	if (req->grp)	576	if (req->grp)
344	{	577	{
345	aio_req grp = req->grp;	578	aio_req grp = req->grp;
346		579
347	/* unlink request */	580	/* unlink request */
…		…
352	grp->grp_first = req->grp_next;	585	grp->grp_first = req->grp_next;
353		586
354	aio_grp_dec (grp);	587	aio_grp_dec (grp);
355	}	588	}
356		589
		590	return !SvTRUE (ERRSV);
		591	}
		592
		593	static void req_destroy (aio_req req)
		594	{
357	if (req->self)	595	if (req->self)
358	{	596	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
361	}	599	}
362		600
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368		604
369	if (req->type == REQ_READDIR && req->result >= 0)	605	if (req->flags & FLAG_PTR2_FREE)
370	free (req->data2ptr);	606	free (req->ptr2);
371		607
372	Safefree (req);	608	Safefree (req);
373	}	609	}
374		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
375	static void req_cancel (aio_req req)	625	static void req_cancel (aio_req req)
376	{	626	{
377	req->flags |= FLAG_CANCELLED;	627	req->flags |= FLAG_CANCELLED;
378		628
379	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))
380	{	669	{
381	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);
382		678
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	679	X_UNLOCK (wrklock);
384	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);
385	}	772	}
386	}	773	}
387		774
388	static int poll_cb ()	775	static int poll_cb ()
389	{	776	{
390	dSP;	777	dSP;
391	int count = 0;	778	int count = 0;
		779	int maxreqs = max_poll_reqs;
392	int do_croak = 0;	780	int do_croak = 0;
		781	struct timeval tv_start, tv_now;
393	aio_req req;	782	aio_req req;
		783
		784	if (max_poll_time)
		785	gettimeofday (&tv_start, 0);
		786
		787	block_sig ();
394		788
395	for (;;)	789	for (;;)
396	{	790	{
397	pthread_mutex_lock (&reslock);	791	for (;;)
398	req = ress;
399
400	if (req)
401	{	792	{
402	ress = req->next;	793	maybe_start_thread ();
403		794
		795	X_LOCK (reslock);
		796	req = reqq_shift (&res_queue);
		797
404	if (!ress)	798	if (req)
405	{	799	{
		800	--npending;
		801
		802	if (!res_queue.size)
		803	{
406	/* read any signals sent by the worker threads */	804	/* read any signals sent by the worker threads */
407	char buf [32];	805	char buf [4];
408	while (read (respipe [0], buf, 32) == 32)	806	while (PerlSock_recv (respipe [0], buf, 4, 0) == 4)
		807	;
409	;	808	}
		809	}
410		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)
411	rese = 0;	845	break;
412	}	846	}
413	}	847	}
414		848
415	pthread_mutex_unlock (&reslock);	849	if (nreqs <= max_outstanding)
416
417	if (!req)
418	break;	850	break;
419		851
420	--nreqs;	852	poll_wait ();
421		853
422	if (req->type == REQ_QUIT)	854	++maxreqs;
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	855	}
451		856
		857	unblock_sig ();
452	return count;	858	return count;
453	}
454
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)
458	{
459	sigset_t fullsigset, oldsigset;
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}
475
476	static void req_send (aio_req req)
477	{
478	while (started < wanted && nreqs >= started)
479	start_thread ();
480
481	++nreqs;
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{
489	reqe->next = req;
490	reqe = req;
491	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}
509
510	static void end_thread (void)
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515
516	req_send (req);
517	}
518
519	static void min_parallel (int nthreads)
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524
525	static void max_parallel (int nthreads)
526	{
527	int cur = started;
528
529	if (wanted > nthreads)
530	wanted = nthreads;
531
532	while (cur > wanted)
533	{
534	end_thread ();
535	cur--;
536	}
537
538	while (started > wanted)
539	{
540	poll_wait ();
541	poll_cb ();
542	}
543	}
544
545	static void create_pipe ()
546	{
547	if (pipe (respipe))
548	croak ("unable to initialize result pipe");
549
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551	croak ("cannot set result pipe to nonblocking mode");
552
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554	croak ("cannot set result pipe to nonblocking mode");
555	}	859	}
556		860
557	/*****************************************************************************/	861	/*****************************************************************************/
558	/* work around various missing functions */	862	/* work around various missing functions */
559		863
…		…
564	/*	868	/*
565	* make our pread/pwrite safe against themselves, but not against	869	* make our pread/pwrite safe against themselves, but not against
566	* 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,
567	* but that's your problem, not mine.	871	* but that's your problem, not mine.
568	*/	872	*/
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	873	static mutex_t preadwritelock = X_MUTEX_INIT;
570		874
571	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)
572	{	876	{
573	ssize_t res;	877	ssize_t res;
574	off_t ooffset;	878	off_t ooffset;
575		879
576	pthread_mutex_lock (&preadwritelock);	880	X_LOCK (preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);	881	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);	882	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);	883	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);	884	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);	885	X_UNLOCK (preadwritelock);
582		886
583	return res;	887	return res;
584	}	888	}
585		889
586	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)
587	{	891	{
588	ssize_t res;	892	ssize_t res;
589	off_t ooffset;	893	off_t ooffset;
590		894
591	pthread_mutex_lock (&preadwritelock);	895	X_LOCK (preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);	896	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);	897	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);	898	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);	899	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);	900	X_UNLOCK (preadwritelock);
597		901
598	return res;	902	return res;
599	}	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
600	#endif	932	#endif
601		933
602	#if !HAVE_FDATASYNC	934	#if !HAVE_FDATASYNC
603	# define fdatasync fsync	935	# define fdatasync fsync
604	#endif	936	#endif
605		937
606	#if !HAVE_READAHEAD	938	#if !HAVE_READAHEAD
607	# define readahead aio_readahead	939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
608		940
609	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)
610	{	942	{
		943	size_t todo = count;
611	dBUF;	944	dBUF;
612		945
613	while (count > 0)	946	while (todo > 0)
614	{	947	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
616		949
617	pread (fd, aio_buf, len, offset);	950	pread (fd, aio_buf, len, offset);
618	offset += len;	951	offset += len;
619	count -= len;	952	todo -= len;
620	}	953	}
621		954
622	fBUF;
623
624	errno = 0;	955	errno = 0;
		956	return count;
625	}	957	}
		958
626	#endif	959	#endif
627		960
628	#if !HAVE_READDIR_R	961	#if !HAVE_READDIR_R
629	# define readdir_r aio_readdir_r	962	# define readdir_r aio_readdir_r
630		963
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	964	static mutex_t readdirlock = X_MUTEX_INIT;
632		965
633	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)
634	{	967	{
635	struct dirent *e;	968	X_DIRENT *e;
636	int errorno;	969	int errorno;
637		970
638	pthread_mutex_lock (&readdirlock);	971	X_LOCK (readdirlock);
639		972
640	e = readdir (dirp);	973	e = readdir (dirp);
641	errorno = errno;	974	errorno = errno;
642		975
643	if (e)	976	if (e)
…		…
646	strcpy (ent->d_name, e->d_name);	979	strcpy (ent->d_name, e->d_name);
647	}	980	}
648	else	981	else
649	*res = 0;	982	*res = 0;
650		983
651	pthread_mutex_unlock (&readdirlock);	984	X_UNLOCK (readdirlock);
652		985
653	errno = errorno;	986	errno = errorno;
654	return e ? 0 : -1;	987	return e ? 0 : -1;
655	}	988	}
656	#endif	989	#endif
657		990
658	/* sendfile always needs emulation */	991	/* sendfile always needs emulation */
659	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)
660	{	993	{
661	ssize_t res;	994	ssize_t res;
662		995
663	if (!count)	996	if (!count)
664	return 0;	997	return 0;
…		…
675	{	1008	{
676	off_t sbytes;	1009	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678		1011
679	if (res < 0 && sbytes)	1012	if (res < 0 && sbytes)
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
681	res = sbytes;	1014	res = sbytes;
682	}	1015	}
683		1016
684	# elif __hpux	1017	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
741		1074
742	offset += cnt;	1075	offset += cnt;
743	res += cnt;	1076	res += cnt;
744	count -= cnt;	1077	count -= cnt;
745	}	1078	}
746
747	fBUF;
748	}	1079	}
749		1080
750	return res;	1081	return res;
751	}	1082	}
752		1083
753	/* read a full directory */	1084	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)	1085	static void scandir_ (aio_req req, worker *self)
755	{	1086	{
756	DIR *dirp;	1087	DIR *dirp;
757	union	1088	union
758	{	1089	{
759	struct dirent d;	1090	X_DIRENT d;
760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
761	} *u;	1092	} *u;
762	struct dirent *entp;	1093	X_DIRENT *entp;
763	char *name, *names;	1094	char *name, *names;
764	int memlen = 4096;	1095	int memlen = 4096;
765	int memofs = 0;	1096	int memofs = 0;
766	int res = 0;	1097	int res = 0;
767	int errorno;
768		1098
769	dirp = opendir (path);	1099	X_LOCK (wrklock);
770	if (!dirp)	1100	self->dirp = dirp = opendir (req->ptr1);
771	return -1;
772
773	u = malloc (sizeof (*u));	1101	self->dbuf = u = malloc (sizeof (*u));
		1102	req->flags |= FLAG_PTR2_FREE;
774	names = malloc (memlen);	1103	req->ptr2 = names = malloc (memlen);
		1104	X_UNLOCK (wrklock);
775		1105
776	if (u && names)	1106	if (dirp && u && names)
777	for (;;)	1107	for (;;)
778	{	1108	{
779	errno = 0;	1109	errno = 0;
780	readdir_r (dirp, &u->d, &entp);	1110	readdir_r (dirp, &u->d, &entp);
781		1111
…		…
791	res++;	1121	res++;
792		1122
793	while (memofs + len > memlen)	1123	while (memofs + len > memlen)
794	{	1124	{
795	memlen *= 2;	1125	memlen *= 2;
		1126	X_LOCK (wrklock);
796	names = realloc (names, memlen);	1127	req->ptr2 = names = realloc (names, memlen);
		1128	X_UNLOCK (wrklock);
		1129
797	if (!names)	1130	if (!names)
798	break;	1131	break;
799	}	1132	}
800		1133
801	memcpy (names + memofs, name, len);	1134	memcpy (names + memofs, name, len);
802	memofs += len;	1135	memofs += len;
803	}	1136	}
804	}	1137	}
805		1138
806	errorno = errno;
807	free (u);
808	closedir (dirp);
809
810	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 (;;)
811	{	1158	{
812	free (names);	1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
813	errno = errorno;
814	res = -1;
815	}
816		1160
817	*namesp = (void *)names;	1161	X_LOCK (reqlock);
818	return res;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831		1162
832	for (;;)	1163	for (;;)
833	{	1164	{
834	req = reqs;	1165	self->req = req = reqq_shift (&req_queue);
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841		1166
842	if (req)	1167	if (req)
843	break;	1168	break;
844		1169
845	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;
846	}	1191	}
847		1192
848	pthread_mutex_unlock (&reqlock);	1193	--nready;
		1194
		1195	X_UNLOCK (reqlock);
849		1196
850	errno = 0; /* strictly unnecessary */	1197	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852		1198
853	if (!(req->flags & FLAG_CANCELLED))	1199	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)	1200	switch (req->type)
855	{	1201	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1202	case REQ_READ: req->result = req->offs >= 0
857	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;
858		1208
859	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;
860	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;
861		1211
862	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;
863	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;
864	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;
865		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
866	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;
867	case REQ_CLOSE: req->result = close (req->fd); break;	1224	case REQ_CLOSE: req->result = close (req->int1); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
869	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;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
872	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;
873		1233
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;	1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1236	case REQ_READDIR: scandir_ (req, self); break;
877		1237
878	case REQ_SLEEP:	1238	case REQ_BUSY:
		1239	#ifdef _WIN32
		1240	Sleep (req->nv1 * 1000.);
		1241	#else
879	{	1242	{
880	struct timeval tv;	1243	struct timeval tv;
881		1244
882	tv.tv_sec = req->fd;	1245	tv.tv_sec = req->nv1;
883	tv.tv_usec = req->fd2;	1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
884		1247
885	req->result = select (0, 0, 0, 0, &tv);	1248	req->result = select (0, 0, 0, 0, &tv);
886	}	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	}
887		1276
888	case REQ_GROUP:	1277	case REQ_GROUP:
889	case REQ_NOP:	1278	case REQ_NOP:
		1279	break;
		1280
890	case REQ_QUIT:	1281	case REQ_QUIT:
891	break;	1282	goto quit;
892		1283
893	default:	1284	default:
894	req->result = ENOSYS;	1285	req->result = -1;
895	break;	1286	break;
896	}	1287	}
897		1288
898	req->errorno = errno;	1289	req->errorno = errno;
899		1290
900	pthread_mutex_lock (&reslock);	1291	X_LOCK (reslock);
901		1292
902	req->next = 0;	1293	++npending;
903		1294
904	if (rese)	1295	if (!reqq_push (&res_queue, req))
905	{	1296	{
906	rese->next = req;	1297	/* write a dummy byte to the pipe so fh becomes ready */
907	rese = req;	1298	send (respipe_osf [1], (const void *)&respipe_osf, 1, 0);
		1299
		1300	/* optionally signal the main thread asynchronously */
		1301	if (main_sig)
		1302	pthread_kill (main_tid, main_sig);
908	}	1303	}
909	else
910	{
911	rese = ress = req;
912		1304
913	/* write a dummy byte to the pipe so fh becomes ready */	1305	self->req = 0;
914	write (respipe [1], &respipe, 1);	1306	worker_clear (self);
915	}
916		1307
917	pthread_mutex_unlock (&reslock);	1308	X_UNLOCK (reslock);
918	}	1309	}
919	while (type != REQ_QUIT);	1310
		1311	quit:
		1312	X_LOCK (wrklock);
		1313	worker_free (self);
		1314	X_UNLOCK (wrklock);
920		1315
921	return 0;	1316	return 0;
		1317	}//D
922	}	1318	}
923		1319
924	/*****************************************************************************/	1320	/*****************************************************************************/
925		1321
926	static void atfork_prepare (void)	1322	static void atfork_prepare (void)
927	{	1323	{
928	pthread_mutex_lock (&reqlock);	1324	X_LOCK (wrklock);
929	pthread_mutex_lock (&reslock);	1325	X_LOCK (reqlock);
		1326	X_LOCK (reslock);
930	#if !HAVE_PREADWRITE	1327	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);	1328	X_LOCK (preadwritelock);
932	#endif	1329	#endif
933	#if !HAVE_READDIR_R	1330	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);	1331	X_LOCK (readdirlock);
935	#endif	1332	#endif
936	}	1333	}
937		1334
938	static void atfork_parent (void)	1335	static void atfork_parent (void)
939	{	1336	{
940	#if !HAVE_READDIR_R	1337	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);	1338	X_UNLOCK (readdirlock);
942	#endif	1339	#endif
943	#if !HAVE_PREADWRITE	1340	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);	1341	X_UNLOCK (preadwritelock);
945	#endif	1342	#endif
946	pthread_mutex_unlock (&reslock);	1343	X_UNLOCK (reslock);
947	pthread_mutex_unlock (&reqlock);	1344	X_UNLOCK (reqlock);
		1345	X_UNLOCK (wrklock);
948	}	1346	}
949		1347
950	static void atfork_child (void)	1348	static void atfork_child (void)
951	{	1349	{
952	aio_req prv;	1350	aio_req prv;
953		1351
954	started = 0;	1352	while (prv = reqq_shift (&req_queue))
		1353	req_destroy (prv);
955		1354
956	while (reqs)	1355	while (prv = reqq_shift (&res_queue))
		1356	req_destroy (prv);
		1357
		1358	while (wrk_first.next != &wrk_first)
957	{	1359	{
958	prv = reqs;	1360	worker *wrk = wrk_first.next;
959	reqs = prv->next;	1361
		1362	if (wrk->req)
		1363	req_destroy (wrk->req);
		1364
		1365	worker_clear (wrk);
960	req_free (prv);	1366	worker_free (wrk);
961	}	1367	}
962		1368
963	reqs = reqe = 0;	1369	started = 0;
964		1370	idle = 0;
965	while (ress)	1371	nreqs = 0;
966	{	1372	nready = 0;
967	prv = ress;	1373	npending = 0;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973		1374
974	close (respipe [0]);	1375	PerlSock_closesocket (respipe [0]);
975	close (respipe [1]);	1376	PerlSock_closesocket (respipe [1]);
		1377
976	create_pipe ();	1378	create_pipe (respipe);
977		1379
978	atfork_parent ();	1380	atfork_parent ();
979	}	1381	}
980		1382
981	#define dREQ \	1383	#define dREQ \
…		…
1004	PROTOTYPES: ENABLE	1406	PROTOTYPES: ENABLE
1005		1407
1006	BOOT:	1408	BOOT:
1007	{	1409	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	1410	HV *stash = gv_stashpv ("IO::AIO", 1);
		1411
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	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);
1012		1424
1013	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
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1015	}	1434	}
1016		1435
1017	void	1436	void
1018	min_parallel (nthreads)	1437	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	1438	PROTOTYPE: $
		1439	CODE:
		1440	max_poll_reqs = nreqs;
1021		1441
1022	void	1442	void
1023	max_parallel (nthreads)	1443	max_poll_time (double nseconds)
1024	int nthreads
1025	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);
1026		1461
1027	int	1462	int
1028	max_outstanding (nreqs)	1463	max_outstanding (int maxreqs)
1029	int nreqs	1464	PROTOTYPE: $
1030	PROTOTYPE: $
1031	CODE:	1465	CODE:
1032	RETVAL = max_outstanding;	1466	RETVAL = max_outstanding;
1033	max_outstanding = nreqs;	1467	max_outstanding = maxreqs;
		1468	OUTPUT:
		1469	RETVAL
1034		1470
1035	void	1471	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1472	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$	1473	PROTOTYPE: $$$;$
1042	PPCODE:	1474	PPCODE:
1043	{	1475	{
1044	dREQ;	1476	dREQ;
1045		1477
1046	req->type = REQ_OPEN;	1478	req->type = REQ_OPEN;
1047	req->data = newSVsv (pathname);	1479	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	1480	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	1481	req->int1 = flags;
1050	req->mode = mode;	1482	req->mode = mode;
1051		1483
1052	REQ_SEND;	1484	REQ_SEND;
1053	}	1485	}
1054		1486
1055	void	1487	void
1056	aio_close (fh,callback=&PL_sv_undef)	1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	1489	PROTOTYPE: $;$
1060	ALIAS:	1490	ALIAS:
1061	aio_close = REQ_CLOSE	1491	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	1492	aio_fsync = REQ_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	1493	aio_fdatasync = REQ_FDATASYNC
1064	PPCODE:	1494	PPCODE:
1065	{	1495	{
1066	dREQ;	1496	dREQ;
1067		1497
1068	req->type = ix;	1498	req->type = ix;
1069	req->fh = newSVsv (fh);	1499	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1500	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071		1501
1072	REQ_SEND (req);	1502	REQ_SEND (req);
1073	}	1503	}
1074		1504
1075	void	1505	void
1076	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)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	1507	ALIAS:
1084	aio_read = REQ_READ	1508	aio_read = REQ_READ
1085	aio_write = REQ_WRITE	1509	aio_write = REQ_WRITE
1086	PROTOTYPE: $$$$$;$	1510	PROTOTYPE: $$$$$;$
1087	PPCODE:	1511	PPCODE:
1088	{	1512	{
1089	aio_req req;
1090	STRLEN svlen;	1513	STRLEN svlen;
1091	char *svptr = SvPVbyte (data, svlen);	1514	char *svptr = SvPVbyte (data, svlen);
		1515	UV len = SvUV (length);
1092		1516
1093	SvUPGRADE (data, SVt_PV);	1517	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);	1518	SvPOK_on (data);
1095		1519
1096	if (dataoffset < 0)	1520	if (dataoffset < 0)
1097	dataoffset += svlen;	1521	dataoffset += svlen;
1098		1522
1099	if (dataoffset < 0 || dataoffset > svlen)	1523	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	1524	croak ("dataoffset outside of data scalar");
1101		1525
1102	if (ix == REQ_WRITE)	1526	if (ix == REQ_WRITE)
1103	{	1527	{
1104	/* write: check length and adjust. */	1528	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	1529	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	1530	len = svlen - dataoffset;
1107	}	1531	}
1108	else	1532	else
1109	{	1533	{
1110	/* read: grow scalar as necessary */	1534	/* read: grow scalar as necessary */
1111	svptr = SvGROW (data, length + dataoffset);	1535	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	1536	}
1113		1537
1114	if (length < 0)	1538	if (len < 0)
1115	croak ("length must not be negative");	1539	croak ("length must not be negative");
1116		1540
1117	{	1541	{
1118	dREQ;	1542	dREQ;
1119		1543
1120	req->type = ix;	1544	req->type = ix;
1121	req->fh = newSVsv (fh);	1545	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1123	: IoOFP (sv_2io (fh)));	1547	: IoOFP (sv_2io (fh)));
		1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	1549	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	1550	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	1551	req->ptr1 = (char *)svptr + dataoffset;
		1552	req->stroffset = dataoffset;
1128		1553
1129	if (!SvREADONLY (data))	1554	if (!SvREADONLY (data))
1130	{	1555	{
1131	SvREADONLY_on (data);	1556	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	1557	req->flags |= FLAG_SV2_RO_OFF;
1133	}	1558	}
1134		1559
1135	REQ_SEND;	1560	REQ_SEND;
1136	}	1561	}
1137	}	1562	}
1138		1563
1139	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
1140	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)
1141	SV * out_fh
1142	SV * in_fh
1143	UV in_offset
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$	1586	PROTOTYPE: $$$$;$
1147	PPCODE:	1587	PPCODE:
1148	{	1588	{
1149	dREQ;	1589	dREQ;
1150		1590
1151	req->type = REQ_SENDFILE;	1591	req->type = REQ_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1592	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154	req->fh2 = newSVsv (in_fh);	1594	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156	req->offset = in_offset;	1596	req->offs = SvVAL64 (in_offset);
1157	req->length = length;	1597	req->size = length;
1158		1598
1159	REQ_SEND;	1599	REQ_SEND;
1160	}	1600	}
1161		1601
1162	void	1602	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1603	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	1604	PROTOTYPE: $$$;$
1169	PPCODE:	1605	PPCODE:
1170	{	1606	{
1171	dREQ;	1607	dREQ;
1172		1608
1173	req->type = REQ_READAHEAD;	1609	req->type = REQ_READAHEAD;
1174	req->fh = newSVsv (fh);	1610	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176	req->offset = offset;	1612	req->offs = SvVAL64 (offset);
1177	req->length = length;	1613	req->size = length;
1178		1614
1179	REQ_SEND;	1615	REQ_SEND;
1180	}	1616	}
1181		1617
1182	void	1618	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	1620	ALIAS:
1187	aio_stat = REQ_STAT	1621	aio_stat = REQ_STAT
1188	aio_lstat = REQ_LSTAT	1622	aio_lstat = REQ_LSTAT
1189	PPCODE:	1623	PPCODE:
1190	{	1624	{
1191	dREQ;	1625	dREQ;
1192		1626
1193	New (0, req->statdata, 1, Stat_t);	1627	req->ptr2 = malloc (sizeof (Stat_t));
1194	if (!req->statdata)	1628	if (!req->ptr2)
1195	{	1629	{
1196	req_free (req);	1630	req_destroy (req);
1197	croak ("out of memory during aio_req->statdata allocation");	1631	croak ("out of memory during aio_stat statdata allocation");
1198	}	1632	}
		1633
		1634	req->flags |= FLAG_PTR2_FREE;
		1635	req->sv1 = newSVsv (fh_or_path);
1199		1636
1200	if (SvPOK (fh_or_path))	1637	if (SvPOK (fh_or_path))
1201	{	1638	{
1202	req->type = ix;	1639	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	1641	}
1206	else	1642	else
1207	{	1643	{
1208	req->type = REQ_FSTAT;	1644	req->type = REQ_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	1646	}
1212		1647
1213	REQ_SEND;	1648	REQ_SEND;
1214	}	1649	}
1215		1650
1216	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
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1747	ALIAS:
1221	aio_unlink = REQ_UNLINK	1748	aio_unlink = REQ_UNLINK
1222	aio_rmdir = REQ_RMDIR	1749	aio_rmdir = REQ_RMDIR
1223	aio_readdir = REQ_READDIR	1750	aio_readdir = REQ_READDIR
1224	PPCODE:	1751	PPCODE:
1225	{	1752	{
1226	dREQ;	1753	dREQ;
1227		1754
1228	req->type = ix;	1755	req->type = ix;
1229	req->data = newSVsv (pathname);	1756	req->sv1 = newSVsv (pathname);
1230	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;
1231		1767
		1768	req->type = REQ_MKDIR;
		1769	req->sv1 = newSVsv (pathname);
		1770	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1771	req->mode = mode;
		1772
1232	REQ_SEND;	1773	REQ_SEND;
1233	}	1774	}
1234		1775
1235	void	1776	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1778	ALIAS:
1241	aio_link = REQ_LINK	1779	aio_link = REQ_LINK
1242	aio_symlink = REQ_SYMLINK	1780	aio_symlink = REQ_SYMLINK
1243	aio_rename = REQ_RENAME	1781	aio_rename = REQ_RENAME
1244	PPCODE:	1782	PPCODE:
1245	{	1783	{
1246	dREQ;	1784	dREQ;
1247		1785
1248	req->type = ix;	1786	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1787	req->sv2 = newSVsv (oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1788	req->ptr2 = SvPVbyte_nolen (req->sv2);
1251	req->data = newSVsv (newpath);	1789	req->sv1 = newSVsv (newpath);
1252	req->dataptr = SvPVbyte_nolen (req->data);	1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1253		1791
1254	REQ_SEND;	1792	REQ_SEND;
1255	}	1793	}
1256		1794
1257	void	1795	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1797	PPCODE:
1262	{	1798	{
1263	dREQ;	1799	dREQ;
1264		1800
1265	req->type = REQ_SLEEP;	1801	req->type = REQ_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1802	req->sv1 = newSVsv (pathname);
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1803	req->ptr1 = SvPVbyte_nolen (req->sv1);
1268		1804	req->mode = (mode_t)mode;
		1805	req->offs = dev;
		1806
1269	REQ_SEND;	1807	REQ_SEND;
1270	}	1808	}
1271		1809
1272	void	1810	void
		1811	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1812	PPCODE:
		1813	{
		1814	dREQ;
		1815
		1816	req->type = REQ_BUSY;
		1817	req->nv1 = delay < 0. ? 0. : delay;
		1818
		1819	REQ_SEND;
		1820	}
		1821
		1822	void
1273	aio_group (callback=&PL_sv_undef)	1823	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	1824	PROTOTYPE: ;$
1276	PPCODE:	1825	PPCODE:
1277	{	1826	{
1278	dREQ;	1827	dREQ;
1279		1828
1280	req->type = REQ_GROUP;	1829	req->type = REQ_GROUP;
		1830
1281	req_send (req);	1831	req_send (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	1833	}
1285		1834
1286	void	1835	void
1287	aio_nop (callback=&PL_sv_undef)	1836	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback
1289	PPCODE:	1837	PPCODE:
1290	{	1838	{
1291	dREQ;	1839	dREQ;
1292		1840
1293	req->type = REQ_NOP;	1841	req->type = REQ_NOP;
1294		1842
1295	REQ_SEND;	1843	REQ_SEND;
1296	}	1844	}
1297		1845
1298	#if 0	1846	int
1299		1847	aioreq_pri (int pri = 0)
1300	void	1848	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1849	CODE:
		1850	RETVAL = next_pri - PRI_BIAS;
		1851	if (items > 0)
		1852	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1853	if (pri < PRI_MIN) pri = PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1854	if (pri > PRI_MAX) pri = PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1855	next_pri = pri + PRI_BIAS;
		1856	}
		1857	OUTPUT:
		1858	RETVAL
1306		1859
1307	#endif	1860	void
		1861	aioreq_nice (int nice = 0)
		1862	CODE:
		1863	nice = next_pri - nice;
		1864	if (nice < PRI_MIN) nice = PRI_MIN;
		1865	if (nice > PRI_MAX) nice = PRI_MAX;
		1866	next_pri = nice + PRI_BIAS;
1308		1867
1309	void	1868	void
1310	flush ()	1869	flush ()
1311	PROTOTYPE:	1870	PROTOTYPE:
1312	CODE:	1871	CODE:
…		…
1314	{	1873	{
1315	poll_wait ();	1874	poll_wait ();
1316	poll_cb ();	1875	poll_cb ();
1317	}	1876	}
1318		1877
1319	void	1878	int
1320	poll()	1879	poll()
1321	PROTOTYPE:	1880	PROTOTYPE:
1322	CODE:	1881	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1882	poll_wait ();
1326	poll_cb ();	1883	RETVAL = poll_cb ();
1327	}	1884	OUTPUT:
		1885	RETVAL
1328		1886
1329	int	1887	int
1330	poll_fileno()	1888	poll_fileno()
1331	PROTOTYPE:	1889	PROTOTYPE:
1332	CODE:	1890	CODE:
…		…
1344		1902
1345	void	1903	void
1346	poll_wait()	1904	poll_wait()
1347	PROTOTYPE:	1905	PROTOTYPE:
1348	CODE:	1906	CODE:
1349	if (nreqs)
1350	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	}
1351		1945
1352	int	1946	int
1353	nreqs()	1947	nreqs()
1354	PROTOTYPE:	1948	PROTOTYPE:
1355	CODE:	1949	CODE:
1356	RETVAL = nreqs;	1950	RETVAL = nreqs;
1357	OUTPUT:	1951	OUTPUT:
1358	RETVAL	1952	RETVAL
1359		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
1360	PROTOTYPES: DISABLE	1980	PROTOTYPES: DISABLE
1361		1981
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1983
1364	void	1984	void
…		…
1379	PPCODE:	1999	PPCODE:
1380	{	2000	{
1381	int i;	2001	int i;
1382	aio_req req;	2002	aio_req req;
1383		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
1384	if (grp->fd == 2)	2007	if (grp->int1 == 2)
1385	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");
1386		2009
1387	for (i = 1; i < items; ++i )	2010	for (i = 1; i < items; ++i )
1388	{	2011	{
1389	if (GIMME_V != G_VOID)	2012	if (GIMME_V != G_VOID)
…		…
1391		2014
1392	req = SvAIO_REQ (ST (i));	2015	req = SvAIO_REQ (ST (i));
1393		2016
1394	if (req)	2017	if (req)
1395	{	2018	{
1396	++grp->length;	2019	++grp->size;
1397	req->grp = grp;	2020	req->grp = grp;
1398		2021
1399	req->grp_prev = 0;	2022	req->grp_prev = 0;
1400	req->grp_next = grp->grp_first;	2023	req->grp_next = grp->grp_first;
1401		2024
…		…
1406	}	2029	}
1407	}	2030	}
1408	}	2031	}
1409		2032
1410	void	2033	void
		2034	cancel_subs (aio_req_ornot req)
		2035	CODE:
		2036	req_cancel_subs (req);
		2037
		2038	void
1411	result (aio_req grp, ...)	2039	result (aio_req grp, ...)
1412	CODE:	2040	CODE:
1413	{	2041	{
1414	int i;	2042	int i;
		2043	AV *av;
		2044
		2045	grp->errorno = errno;
		2046
1415	AV *av = newAV ();	2047	av = newAV ();
1416		2048
1417	for (i = 1; i < items; ++i )	2049	for (i = 1; i < items; ++i )
1418	av_push (av, newSVsv (ST (i)));	2050	av_push (av, newSVsv (ST (i)));
1419		2051
1420	SvREFCNT_dec (grp->data);	2052	SvREFCNT_dec (grp->sv1);
1421	grp->data = (SV *)av;	2053	grp->sv1 = (SV *)av;
1422	}	2054	}
1423		2055
1424	void	2056	void
		2057	errno (aio_req grp, int errorno = errno)
		2058	CODE:
		2059	grp->errorno = errorno;
		2060
		2061	void
1425	feed_limit (aio_req grp, int limit)	2062	limit (aio_req grp, int limit)
1426	CODE:	2063	CODE:
1427	grp->fd2 = limit;	2064	grp->int2 = limit;
1428	aio_grp_feed (grp);	2065	aio_grp_feed (grp);
1429		2066
1430	void	2067	void
1431	feed (aio_req grp, SV *callback=&PL_sv_undef)	2068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1432	CODE:	2069	CODE:
1433	{	2070	{
1434	SvREFCNT_dec (grp->fh2);	2071	SvREFCNT_dec (grp->sv2);
1435	grp->fh2 = newSVsv (callback);	2072	grp->sv2 = newSVsv (callback);
1436		2073
1437	if (grp->fd2 <= 0)	2074	if (grp->int2 <= 0)
1438	grp->fd2 = 2;	2075	grp->int2 = 2;
1439		2076
1440	aio_grp_feed (grp);	2077	aio_grp_feed (grp);
1441	}	2078	}
1442		2079

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