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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC vs.
Revision 1.105 by root, Sun Jul 8 11:12:15 2007 UTC

1	#define _REENTRANT 1	1	#include "xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#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
23		68
24	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
25	# if __linux	70	# if __linux
26	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
27	# elif __freebsd	72	# elif __freebsd
…		…
34	# else	79	# else
35	# error sendfile support requested but not available	80	# error sendfile support requested but not available
36	# endif	81	# endif
37	#endif	82	#endif
38		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
39	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	88	#ifndef NAME_MAX
41	# define NAME_MAX 4096	89	# define NAME_MAX 4096
42	#endif	90	#endif
43		91
44	#if __ia64	92	/* buffer size for various temporary buffers */
45	# define STACKSIZE 65536	93	#define AIO_BUFSIZE 65536
		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
46	#else	98	#else
47	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
48	#endif	100	#endif
		101
		102	#define dBUF \
		103	char *aio_buf; \
		104	X_LOCK (wrklock); \
		105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		106	X_UNLOCK (wrklock); \
		107	if (!aio_buf) \
		108	return -1;
		109
		110	typedef SV SV8; /* byte-sv, used for argument-checking */
49		111
50	enum {	112	enum {
51	REQ_QUIT,	113	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
55	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,
56	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_GROUP, REQ_NOP,	126	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,	127	REQ_BUSY,
62	};	128	};
63		129
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	131	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		132
67	typedef struct aio_cb	133	typedef struct aio_cb
68	{	134	{
69	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
70		136
71	SV *data, *callback;	137	SV *callback;
72	SV *fh, *fh2;	138	SV *sv1, *sv2;
73	void *dataptr, *data2ptr;	139	void *ptr1, *ptr2;
74	Stat_t *statdata;
75	off_t offset;	140	off_t offs;
76	size_t length;	141	size_t size;
77	ssize_t result;	142	ssize_t result;
		143	double nv1, nv2;
78		144
79	STRLEN dataoffset;	145	STRLEN stroffset;
80	int type;	146	int type;
81	int fd, fd2;	147	int int1, int2, int3;
82	int errorno;	148	int errorno;
83	mode_t mode; /* open */	149	mode_t mode; /* open */
84		150
85	unsigned char flags;	151	unsigned char flags;
86	unsigned char pri;	152	unsigned char pri;
…		…
88	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;	156	} aio_cb;
91		157
92	enum {	158	enum {
93	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) */
94	};	162	};
95		163
96	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
97	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
98		166
…		…
100	PRI_MIN = -4,	168	PRI_MIN = -4,
101	PRI_MAX = 4,	169	PRI_MAX = 4,
102		170
103	DEFAULT_PRI = 0,	171	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,	172	PRI_BIAS = -PRI_MIN,
		173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
105	};	174	};
106		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
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;	222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108		223
109	static int started, wanted;	224	static unsigned int started, idle, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;
112	static int respipe [2];
113		225
		226	/* worker threads management */
		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
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	271	static mutex_t reslock = X_MUTEX_INIT;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	272	static mutex_t reqlock = X_MUTEX_INIT;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	273	static cond_t reqwait = X_COND_INIT;
117		274
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	275	#if WORDACCESS_UNSAFE
119	static volatile aio_req ress, rese; /* queue start, queue end */
120		276
		277	static unsigned int get_nready ()
		278	{
		279	unsigned int retval;
		280
		281	X_LOCK (reqlock);
		282	retval = nready;
		283	X_UNLOCK (reqlock);
		284
		285	return retval;
		286	}
		287
		288	static unsigned int get_npending ()
		289	{
		290	unsigned int retval;
		291
		292	X_LOCK (reslock);
		293	retval = npending;
		294	X_UNLOCK (reslock);
		295
		296	return retval;
		297	}
		298
		299	static unsigned int get_nthreads ()
		300	{
		301	unsigned int retval;
		302
		303	X_LOCK (wrklock);
		304	retval = started;
		305	X_UNLOCK (wrklock);
		306
		307	return retval;
		308	}
		309
		310	#else
		311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
		316	#endif
		317
		318	/*
		319	* a somewhat faster data structure might be nice, but
		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;
		327
		328	static reqq req_queue;
		329	static reqq res_queue;
		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 ();
121	static void req_invoke (aio_req req);	373	static int req_invoke (aio_req req);
		374	static void req_destroy (aio_req req);
122	static void req_free (aio_req req);	375	static void req_cancel (aio_req req);
123		376
124	/* must be called at most once */	377	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
126	{	379	{
127	if (!req->self)	380	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	399	}
147		400
148	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
149	{	402	{
		403	block_sig ();
		404
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
151	{	406	{
152	int old_len = grp->length;	407	int old_len = grp->size;
153		408
154	if (grp->fh2 && SvOK (grp->fh2))	409	if (grp->sv2 && SvOK (grp->sv2))
155	{	410	{
156	dSP;	411	dSP;
157		412
158	ENTER;	413	ENTER;
159	SAVETMPS;	414	SAVETMPS;
160	PUSHMARK (SP);	415	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;	417	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
164	SPAGAIN;	419	SPAGAIN;
165	FREETMPS;	420	FREETMPS;
166	LEAVE;	421	LEAVE;
167	}	422	}
168		423
169	/* stop if no progress has been made */	424	/* stop if no progress has been made */
170	if (old_len == grp->length)	425	if (old_len == grp->size)
171	{	426	{
172	SvREFCNT_dec (grp->fh2);	427	SvREFCNT_dec (grp->sv2);
173	grp->fh2 = 0;	428	grp->sv2 = 0;
174	break;	429	break;
175	}	430	}
176	}	431	}
		432
		433	unblock_sig ();
177	}	434	}
178		435
179	static void aio_grp_dec (aio_req grp)	436	static void aio_grp_dec (aio_req grp)
180	{	437	{
181	--grp->length;	438	--grp->size;
182		439
183	/* call feeder, if applicable */	440	/* call feeder, if applicable */
184	aio_grp_feed (grp);	441	aio_grp_feed (grp);
185		442
186	/* finish, if done */	443	/* finish, if done */
187	if (!grp->length && grp->fd)	444	if (!grp->size && grp->int1)
188	{	445	{
		446	block_sig ();
		447
189	req_invoke (grp);	448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
190	req_free (grp);	455	req_destroy (grp);
		456	unblock_sig ();
191	}	457	}
192	}	458	}
193		459
194	static void poll_wait ()	460	static int req_invoke (aio_req req)
195	{	461	{
196	fd_set rfd;	462	dSP;
197		463
198	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))
199	{	468	{
200	aio_req req;	469	ENTER;
201	pthread_mutex_lock (&reslock);	470	SAVETMPS;
202	req = ress;	471	PUSHMARK (SP);
203	pthread_mutex_unlock (&reslock);	472	EXTEND (SP, 1);
204		473
205	if (req)	474	switch (req->type)
206	return;	475	{
		476	case REQ_READDIR:
		477	{
		478	SV *rv = &PL_sv_undef;
207		479
208	FD_ZERO(&rfd);	480	if (req->result >= 0)
209	FD_SET(respipe [0], &rfd);	481	{
		482	int i;
		483	char *buf = req->ptr2;
		484	AV *av = newAV ();
210		485
211	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;
212	}	574	}
213	}
214		575
215	static void req_invoke (aio_req req)
216	{
217	dSP;
218	int errorno = errno;
219
220	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
221	return;
222
223	errno = req->errorno;
224
225	ENTER;
226	SAVETMPS;
227	PUSHMARK (SP);
228	EXTEND (SP, 1);
229
230	switch (req->type)
231	{
232	case REQ_READDIR:
233	{
234	SV *rv = &PL_sv_undef;
235
236	if (req->result >= 0)
237	{
238	char *buf = req->data2ptr;
239	AV *av = newAV ();
240
241	while (req->result)
242	{
243	SV *sv = newSVpv (buf, 0);
244
245	av_push (av, sv);
246	buf += SvCUR (sv) + 1;
247	req->result--;
248	}
249
250	rv = sv_2mortal (newRV_noinc ((SV *)av));
251	}
252
253	PUSHs (rv);
254	}
255	break;
256
257	case REQ_OPEN:
258	{
259	/* convert fd to fh */
260	SV *fh;
261
262	PUSHs (sv_2mortal (newSViv (req->result)));
263	PUTBACK;
264	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
265	SPAGAIN;
266
267	fh = SvREFCNT_inc (POPs);
268
269	PUSHMARK (SP);
270	XPUSHs (sv_2mortal (fh));
271	}
272	break;
273
274	case REQ_GROUP:
275	req->fd = 2; /* mark group as finished */
276
277	if (req->data)
278	{
279	int i;
280	AV *av = (AV *)req->data;
281
282	EXTEND (SP, AvFILL (av) + 1);
283	for (i = 0; i <= AvFILL (av); ++i)
284	PUSHs (*av_fetch (av, i, 0));
285	}
286	break;
287
288	case REQ_NOP:
289	case REQ_SLEEP:
290	break;
291
292	default:
293	PUSHs (sv_2mortal (newSViv (req->result)));
294	break;
295	}
296
297
298	PUTBACK;
299	call_sv (req->callback, G_VOID | G_EVAL);
300	SPAGAIN;
301
302	FREETMPS;
303	LEAVE;
304
305	errno = errorno;
306
307	if (SvTRUE (ERRSV))
308	{
309	req_free (req);
310	croak (0);
311	}
312	}
313
314	static void req_free (aio_req req)
315	{
316	if (req->grp)	576	if (req->grp)
317	{	577	{
318	aio_req grp = req->grp;	578	aio_req grp = req->grp;
319		579
320	/* unlink request */	580	/* unlink request */
…		…
325	grp->grp_first = req->grp_next;	585	grp->grp_first = req->grp_next;
326		586
327	aio_grp_dec (grp);	587	aio_grp_dec (grp);
328	}	588	}
329		589
		590	return !SvTRUE (ERRSV);
		591	}
		592
		593	static void req_destroy (aio_req req)
		594	{
330	if (req->self)	595	if (req->self)
331	{	596	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
334	}	599	}
335		600
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
339	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341		604
342	if (req->type == REQ_READDIR && req->result >= 0)	605	if (req->flags & FLAG_PTR2_FREE)
343	free (req->data2ptr);	606	free (req->ptr2);
344		607
345	Safefree (req);	608	Safefree (req);
346	}	609	}
347		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
348	static void req_cancel (aio_req req)	625	static void req_cancel (aio_req req)
349	{	626	{
350	req->flags |= FLAG_CANCELLED;	627	req->flags |= FLAG_CANCELLED;
351		628
352	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))
353	{	669	{
354	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);
355		678
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	679	X_UNLOCK (wrklock);
357	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);
358	}	772	}
359	}	773	}
360		774
361	static int poll_cb ()	775	static int poll_cb ()
362	{	776	{
363	dSP;	777	dSP;
364	int count = 0;	778	int count = 0;
		779	int maxreqs = max_poll_reqs;
365	int do_croak = 0;	780	int do_croak = 0;
		781	struct timeval tv_start, tv_now;
366	aio_req req;	782	aio_req req;
		783
		784	if (max_poll_time)
		785	gettimeofday (&tv_start, 0);
		786
		787	block_sig ();
367		788
368	for (;;)	789	for (;;)
369	{	790	{
370	pthread_mutex_lock (&reslock);	791	for (;;)
371	req = ress;
372
373	if (req)
374	{	792	{
375	ress = req->next;	793	maybe_start_thread ();
376		794
		795	X_LOCK (reslock);
		796	req = reqq_shift (&res_queue);
		797
377	if (!ress)	798	if (req)
378	{	799	{
		800	--npending;
		801
		802	if (!res_queue.size)
		803	{
379	/* read any signals sent by the worker threads */	804	/* read any signals sent by the worker threads */
380	char buf [32];	805	char buf [4];
381	while (read (respipe [0], buf, 32) == 32)	806	while (respipe_read (respipe [0], buf, 4) == 4)
		807	;
382	;	808	}
		809	}
383		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)
384	rese = 0;	845	break;
385	}	846	}
386	}	847	}
387		848
388	pthread_mutex_unlock (&reslock);	849	if (nreqs <= max_outstanding)
389
390	if (!req)
391	break;	850	break;
392		851
393	--nreqs;	852	poll_wait ();
394		853
395	if (req->type == REQ_QUIT)	854	++maxreqs;
396	started--;
397	else if (req->type == REQ_GROUP && req->length)
398	{
399	req->fd = 1; /* mark request as delayed */
400	continue;
401	}
402	else
403	{
404	if (req->type == REQ_READ)
405	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
406
407	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
408	SvREADONLY_off (req->data);
409
410	if (req->statdata)
411	{
412	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
413	PL_laststatval = req->result;
414	PL_statcache = *(req->statdata);
415	}
416
417	req_invoke (req);
418
419	count++;
420	}
421
422	req_free (req);
423	}	855	}
424		856
		857	unblock_sig ();
425	return count;	858	return count;
426	}
427
428	static void *aio_proc(void *arg);
429
430	static void start_thread (void)
431	{
432	sigset_t fullsigset, oldsigset;
433	pthread_t tid;
434	pthread_attr_t attr;
435
436	pthread_attr_init (&attr);
437	pthread_attr_setstacksize (&attr, STACKSIZE);
438	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
439
440	sigfillset (&fullsigset);
441	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
442
443	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
444	started++;
445
446	sigprocmask (SIG_SETMASK, &oldsigset, 0);
447	}
448
449	static void req_send (aio_req req)
450	{
451	while (started < wanted && nreqs >= started)
452	start_thread ();
453
454	++nreqs;
455
456	pthread_mutex_lock (&reqlock);
457
458	req->next = 0;
459
460	if (reqe)
461	{
462	reqe->next = req;
463	reqe = req;
464	}
465	else
466	reqe = reqs = req;
467
468	pthread_cond_signal (&reqwait);
469	pthread_mutex_unlock (&reqlock);
470
471	if (nreqs > max_outstanding)
472	for (;;)
473	{
474	poll_cb ();
475
476	if (nreqs <= max_outstanding)
477	break;
478
479	poll_wait ();
480	}
481	}
482
483	static void end_thread (void)
484	{
485	aio_req req;
486	Newz (0, req, 1, aio_cb);
487	req->type = REQ_QUIT;
488
489	req_send (req);
490	}
491
492	static void min_parallel (int nthreads)
493	{
494	if (wanted < nthreads)
495	wanted = nthreads;
496	}
497
498	static void max_parallel (int nthreads)
499	{
500	int cur = started;
501
502	if (wanted > nthreads)
503	wanted = nthreads;
504
505	while (cur > wanted)
506	{
507	end_thread ();
508	cur--;
509	}
510
511	while (started > wanted)
512	{
513	poll_wait ();
514	poll_cb ();
515	}
516	}
517
518	static void create_pipe ()
519	{
520	if (pipe (respipe))
521	croak ("unable to initialize result pipe");
522
523	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
524	croak ("cannot set result pipe to nonblocking mode");
525
526	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
527	croak ("cannot set result pipe to nonblocking mode");
528	}	859	}
529		860
530	/*****************************************************************************/	861	/*****************************************************************************/
531	/* work around various missing functions */	862	/* work around various missing functions */
532		863
…		…
537	/*	868	/*
538	* make our pread/pwrite safe against themselves, but not against	869	* make our pread/pwrite safe against themselves, but not against
539	* 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,
540	* but that's your problem, not mine.	871	* but that's your problem, not mine.
541	*/	872	*/
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	873	static mutex_t preadwritelock = X_MUTEX_INIT;
543		874
544	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)
545	{	876	{
546	ssize_t res;	877	ssize_t res;
547	off_t ooffset;	878	off_t ooffset;
548		879
549	pthread_mutex_lock (&preadwritelock);	880	X_LOCK (preadwritelock);
550	ooffset = lseek (fd, 0, SEEK_CUR);	881	ooffset = lseek (fd, 0, SEEK_CUR);
551	lseek (fd, offset, SEEK_SET);	882	lseek (fd, offset, SEEK_SET);
552	res = read (fd, buf, count);	883	res = read (fd, buf, count);
553	lseek (fd, ooffset, SEEK_SET);	884	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);	885	X_UNLOCK (preadwritelock);
555		886
556	return res;	887	return res;
557	}	888	}
558		889
559	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)
560	{	891	{
561	ssize_t res;	892	ssize_t res;
562	off_t ooffset;	893	off_t ooffset;
563		894
564	pthread_mutex_lock (&preadwritelock);	895	X_LOCK (preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);	896	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);	897	lseek (fd, offset, SEEK_SET);
567	res = write (fd, buf, count);	898	res = write (fd, buf, count);
568	lseek (fd, offset, SEEK_SET);	899	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);	900	X_UNLOCK (preadwritelock);
570		901
571	return res;	902	return res;
572	}	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
573	#endif	932	#endif
574		933
575	#if !HAVE_FDATASYNC	934	#if !HAVE_FDATASYNC
576	# define fdatasync fsync	935	# define fdatasync fsync
577	#endif	936	#endif
578		937
579	#if !HAVE_READAHEAD	938	#if !HAVE_READAHEAD
580	# define readahead aio_readahead	939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
581		940
582	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)
583	{	942	{
584	char readahead_buf[4096];	943	size_t todo = count;
		944	dBUF;
585		945
586	while (count > 0)	946	while (todo > 0)
587	{	947	{
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
589		949
590	pread (fd, readahead_buf, len, offset);	950	pread (fd, aio_buf, len, offset);
591	offset += len;	951	offset += len;
592	count -= len;	952	todo -= len;
593	}	953	}
594		954
595	errno = 0;	955	errno = 0;
		956	return count;
596	}	957	}
		958
597	#endif	959	#endif
598		960
599	#if !HAVE_READDIR_R	961	#if !HAVE_READDIR_R
600	# define readdir_r aio_readdir_r	962	# define readdir_r aio_readdir_r
601		963
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	964	static mutex_t readdirlock = X_MUTEX_INIT;
603		965
604	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)
605	{	967	{
606	struct dirent *e;	968	X_DIRENT *e;
607	int errorno;	969	int errorno;
608		970
609	pthread_mutex_lock (&readdirlock);	971	X_LOCK (readdirlock);
610		972
611	e = readdir (dirp);	973	e = readdir (dirp);
612	errorno = errno;	974	errorno = errno;
613		975
614	if (e)	976	if (e)
…		…
617	strcpy (ent->d_name, e->d_name);	979	strcpy (ent->d_name, e->d_name);
618	}	980	}
619	else	981	else
620	*res = 0;	982	*res = 0;
621		983
622	pthread_mutex_unlock (&readdirlock);	984	X_UNLOCK (readdirlock);
623		985
624	errno = errorno;	986	errno = errorno;
625	return e ? 0 : -1;	987	return e ? 0 : -1;
626	}	988	}
627	#endif	989	#endif
628		990
629	/* sendfile always needs emulation */	991	/* sendfile always needs emulation */
630	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)
631	{	993	{
632	ssize_t res;	994	ssize_t res;
633		995
634	if (!count)	996	if (!count)
635	return 0;	997	return 0;
…		…
646	{	1008	{
647	off_t sbytes;	1009	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649		1011
650	if (res < 0 && sbytes)	1012	if (res < 0 && sbytes)
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
652	res = sbytes;	1014	res = sbytes;
653	}	1015	}
654		1016
655	# elif __hpux	1017	# elif __hpux
656	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
684	#endif	1046	#endif
685	)	1047	)
686	)	1048	)
687	{	1049	{
688	/* emulate sendfile. this is a major pain in the ass */	1050	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];	1051	dBUF;
		1052
690	res = 0;	1053	res = 0;
691		1054
692	while (count)	1055	while (count)
693	{	1056	{
694	ssize_t cnt;	1057	ssize_t cnt;
695		1058
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1059	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
697		1060
698	if (cnt <= 0)	1061	if (cnt <= 0)
699	{	1062	{
700	if (cnt && !res) res = -1;	1063	if (cnt && !res) res = -1;
701	break;	1064	break;
702	}	1065	}
703		1066
704	cnt = write (ofd, buf, cnt);	1067	cnt = write (ofd, aio_buf, cnt);
705		1068
706	if (cnt <= 0)	1069	if (cnt <= 0)
707	{	1070	{
708	if (cnt && !res) res = -1;	1071	if (cnt && !res) res = -1;
709	break;	1072	break;
…		…
717		1080
718	return res;	1081	return res;
719	}	1082	}
720		1083
721	/* read a full directory */	1084	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)	1085	static void scandir_ (aio_req req, worker *self)
723	{	1086	{
724	DIR *dirp = opendir (path);	1087	DIR *dirp;
725	union	1088	union
726	{	1089	{
727	struct dirent d;	1090	X_DIRENT d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
729	} u;	1092	} *u;
730	struct dirent *entp;	1093	X_DIRENT *entp;
731	char *name, *names;	1094	char *name, *names;
732	int memlen = 4096;	1095	int memlen = 4096;
733	int memofs = 0;	1096	int memofs = 0;
734	int res = 0;	1097	int res = 0;
735	int errorno;
736		1098
737	if (!dirp)	1099	X_LOCK (wrklock);
738	return -1;	1100	self->dirp = dirp = opendir (req->ptr1);
739		1101	self->dbuf = u = malloc (sizeof (*u));
		1102	req->flags |= FLAG_PTR2_FREE;
740	names = malloc (memlen);	1103	req->ptr2 = names = malloc (memlen);
		1104	X_UNLOCK (wrklock);
		1105
		1106	if (dirp && u && names)
		1107	for (;;)
		1108	{
		1109	errno = 0;
		1110	readdir_r (dirp, &u->d, &entp);
		1111
		1112	if (!entp)
		1113	break;
		1114
		1115	name = entp->d_name;
		1116
		1117	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1118	{
		1119	int len = strlen (name) + 1;
		1120
		1121	res++;
		1122
		1123	while (memofs + len > memlen)
		1124	{
		1125	memlen *= 2;
		1126	X_LOCK (wrklock);
		1127	req->ptr2 = names = realloc (names, memlen);
		1128	X_UNLOCK (wrklock);
		1129
		1130	if (!names)
		1131	break;
		1132	}
		1133
		1134	memcpy (names + memofs, name, len);
		1135	memofs += len;
		1136	}
		1137	}
		1138
		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);
741		1156
742	for (;;)	1157	for (;;)
743	{	1158	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);	1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
745		1160
746	if (!entp)	1161	X_LOCK (reqlock);
747	break;
748
749	name = entp->d_name;
750
751	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
752	{
753	int len = strlen (name) + 1;
754
755	res++;
756
757	while (memofs + len > memlen)
758	{
759	memlen *= 2;
760	names = realloc (names, memlen);
761	if (!names)
762	break;
763	}
764
765	memcpy (names + memofs, name, len);
766	memofs += len;
767	}
768	}
769
770	errorno = errno;
771	closedir (dirp);
772
773	if (errorno)
774	{
775	free (names);
776	errno = errorno;
777	res = -1;
778	}
779
780	*namesp = (void *)names;
781	return res;
782	}
783
784	/*****************************************************************************/
785
786	static void *aio_proc (void *thr_arg)
787	{
788	aio_req req;
789	int type;
790
791	do
792	{
793	pthread_mutex_lock (&reqlock);
794		1162
795	for (;;)	1163	for (;;)
796	{	1164	{
797	req = reqs;	1165	self->req = req = reqq_shift (&req_queue);
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804		1166
805	if (req)	1167	if (req)
806	break;	1168	break;
807		1169
808	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;
809	}	1191	}
810		1192
811	pthread_mutex_unlock (&reqlock);	1193	--nready;
		1194
		1195	X_UNLOCK (reqlock);
812		1196
813	errno = 0; /* strictly unnecessary */	1197	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815		1198
816	if (!(req->flags & FLAG_CANCELLED))	1199	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)	1200	switch (req->type)
818	{	1201	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1202	case REQ_READ: req->result = req->offs >= 0
820	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;
821		1208
822	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;
823	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;
824		1211
825	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;
826	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;
827	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;
828		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
829	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;
830	case REQ_CLOSE: req->result = close (req->fd); break;	1224	case REQ_CLOSE: req->result = close (req->int1); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
832	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;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
835	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;
836		1233
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;	1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1236	case REQ_READDIR: scandir_ (req, self); break;
840		1237
841	case REQ_SLEEP:	1238	case REQ_BUSY:
		1239	#ifdef _WIN32
		1240	Sleep (req->nv1 * 1000.);
		1241	#else
842	{	1242	{
843	struct timeval tv;	1243	struct timeval tv;
844		1244
845	tv.tv_sec = req->fd;	1245	tv.tv_sec = req->nv1;
846	tv.tv_usec = req->fd2;	1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
847		1247
848	req->result = select (0, 0, 0, 0, &tv);	1248	req->result = select (0, 0, 0, 0, &tv);
849	}	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	}
850		1276
851	case REQ_GROUP:	1277	case REQ_GROUP:
852	case REQ_NOP:	1278	case REQ_NOP:
		1279	break;
		1280
853	case REQ_QUIT:	1281	case REQ_QUIT:
854	break;	1282	goto quit;
855		1283
856	default:	1284	default:
857	req->result = ENOSYS;	1285	req->result = -1;
858	break;	1286	break;
859	}	1287	}
860		1288
861	req->errorno = errno;	1289	req->errorno = errno;
862		1290
863	pthread_mutex_lock (&reslock);	1291	X_LOCK (reslock);
864		1292
865	req->next = 0;	1293	++npending;
866		1294
867	if (rese)	1295	if (!reqq_push (&res_queue, req))
868	{	1296	{
869	rese->next = req;	1297	/* write a dummy byte to the pipe so fh becomes ready */
870	rese = req;	1298	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1299
		1300	/* optionally signal the main thread asynchronously */
		1301	if (main_sig)
		1302	pthread_kill (main_tid, main_sig);
871	}	1303	}
872	else
873	{
874	rese = ress = req;
875		1304
876	/* write a dummy byte to the pipe so fh becomes ready */	1305	self->req = 0;
877	write (respipe [1], &respipe, 1);	1306	worker_clear (self);
878	}
879		1307
880	pthread_mutex_unlock (&reslock);	1308	X_UNLOCK (reslock);
881	}	1309	}
882	while (type != REQ_QUIT);	1310
		1311	quit:
		1312	X_LOCK (wrklock);
		1313	worker_free (self);
		1314	X_UNLOCK (wrklock);
883		1315
884	return 0;	1316	return 0;
		1317	}//D
885	}	1318	}
886		1319
887	/*****************************************************************************/	1320	/*****************************************************************************/
888		1321
889	static void atfork_prepare (void)	1322	static void atfork_prepare (void)
890	{	1323	{
891	pthread_mutex_lock (&reqlock);	1324	X_LOCK (wrklock);
892	pthread_mutex_lock (&reslock);	1325	X_LOCK (reqlock);
		1326	X_LOCK (reslock);
893	#if !HAVE_PREADWRITE	1327	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);	1328	X_LOCK (preadwritelock);
895	#endif	1329	#endif
896	#if !HAVE_READDIR_R	1330	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);	1331	X_LOCK (readdirlock);
898	#endif	1332	#endif
899	}	1333	}
900		1334
901	static void atfork_parent (void)	1335	static void atfork_parent (void)
902	{	1336	{
903	#if !HAVE_READDIR_R	1337	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);	1338	X_UNLOCK (readdirlock);
905	#endif	1339	#endif
906	#if !HAVE_PREADWRITE	1340	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);	1341	X_UNLOCK (preadwritelock);
908	#endif	1342	#endif
909	pthread_mutex_unlock (&reslock);	1343	X_UNLOCK (reslock);
910	pthread_mutex_unlock (&reqlock);	1344	X_UNLOCK (reqlock);
		1345	X_UNLOCK (wrklock);
911	}	1346	}
912		1347
913	static void atfork_child (void)	1348	static void atfork_child (void)
914	{	1349	{
915	aio_req prv;	1350	aio_req prv;
916		1351
917	started = 0;	1352	while (prv = reqq_shift (&req_queue))
		1353	req_destroy (prv);
918		1354
919	while (reqs)	1355	while (prv = reqq_shift (&res_queue))
		1356	req_destroy (prv);
		1357
		1358	while (wrk_first.next != &wrk_first)
920	{	1359	{
921	prv = reqs;	1360	worker *wrk = wrk_first.next;
922	reqs = prv->next;	1361
		1362	if (wrk->req)
		1363	req_destroy (wrk->req);
		1364
		1365	worker_clear (wrk);
923	req_free (prv);	1366	worker_free (wrk);
924	}	1367	}
925		1368
926	reqs = reqe = 0;	1369	started = 0;
927		1370	idle = 0;
928	while (ress)	1371	nreqs = 0;
929	{	1372	nready = 0;
930	prv = ress;	1373	npending = 0;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936		1374
937	close (respipe [0]);	1375	respipe_close (respipe [0]);
938	close (respipe [1]);	1376	respipe_close (respipe [1]);
		1377
939	create_pipe ();	1378	create_pipe (respipe);
940		1379
941	atfork_parent ();	1380	atfork_parent ();
942	}	1381	}
943		1382
944	#define dREQ \	1383	#define dREQ \
…		…
967	PROTOTYPES: ENABLE	1406	PROTOTYPES: ENABLE
968		1407
969	BOOT:	1408	BOOT:
970	{	1409	{
971	HV *stash = gv_stashpv ("IO::AIO", 1);	1410	HV *stash = gv_stashpv ("IO::AIO", 1);
		1411
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974	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);
975		1424
976	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
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
978	}	1434	}
979		1435
980	void	1436	void
981	min_parallel (nthreads)	1437	max_poll_reqs (int nreqs)
982	int nthreads
983	PROTOTYPE: $	1438	PROTOTYPE: $
		1439	CODE:
		1440	max_poll_reqs = nreqs;
984		1441
985	void	1442	void
986	max_parallel (nthreads)	1443	max_poll_time (double nseconds)
987	int nthreads
988	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);
989		1461
990	int	1462	int
991	max_outstanding (nreqs)	1463	max_outstanding (int maxreqs)
992	int nreqs	1464	PROTOTYPE: $
993	PROTOTYPE: $
994	CODE:	1465	CODE:
995	RETVAL = max_outstanding;	1466	RETVAL = max_outstanding;
996	max_outstanding = nreqs;	1467	max_outstanding = maxreqs;
		1468	OUTPUT:
		1469	RETVAL
997		1470
998	void	1471	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1472	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1000	SV * pathname
1001	int flags
1002	int mode
1003	SV * callback
1004	PROTOTYPE: $$$;$	1473	PROTOTYPE: $$$;$
1005	PPCODE:	1474	PPCODE:
1006	{	1475	{
1007	dREQ;	1476	dREQ;
1008		1477
1009	req->type = REQ_OPEN;	1478	req->type = REQ_OPEN;
1010	req->data = newSVsv (pathname);	1479	req->sv1 = newSVsv (pathname);
1011	req->dataptr = SvPVbyte_nolen (req->data);	1480	req->ptr1 = SvPVbyte_nolen (req->sv1);
1012	req->fd = flags;	1481	req->int1 = flags;
1013	req->mode = mode;	1482	req->mode = mode;
1014		1483
1015	REQ_SEND;	1484	REQ_SEND;
1016	}	1485	}
1017		1486
1018	void	1487	void
1019	aio_close (fh,callback=&PL_sv_undef)	1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$	1489	PROTOTYPE: $;$
1023	ALIAS:	1490	ALIAS:
1024	aio_close = REQ_CLOSE	1491	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC	1492	aio_fsync = REQ_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC	1493	aio_fdatasync = REQ_FDATASYNC
1027	PPCODE:	1494	PPCODE:
1028	{	1495	{
1029	dREQ;	1496	dREQ;
1030		1497
1031	req->type = ix;	1498	req->type = ix;
1032	req->fh = newSVsv (fh);	1499	req->sv1 = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1500	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1034		1501
1035	REQ_SEND (req);	1502	REQ_SEND (req);
1036	}	1503	}
1037		1504
1038	void	1505	void
1039	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)
1040	SV * fh
1041	UV offset
1042	UV length
1043	SV * data
1044	UV dataoffset
1045	SV * callback
1046	ALIAS:	1507	ALIAS:
1047	aio_read = REQ_READ	1508	aio_read = REQ_READ
1048	aio_write = REQ_WRITE	1509	aio_write = REQ_WRITE
1049	PROTOTYPE: $$$$$;$	1510	PROTOTYPE: $$$$$;$
1050	PPCODE:	1511	PPCODE:
1051	{	1512	{
1052	aio_req req;
1053	STRLEN svlen;	1513	STRLEN svlen;
1054	char *svptr = SvPVbyte (data, svlen);	1514	char *svptr = SvPVbyte (data, svlen);
		1515	UV len = SvUV (length);
1055		1516
1056	SvUPGRADE (data, SVt_PV);	1517	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);	1518	SvPOK_on (data);
1058		1519
1059	if (dataoffset < 0)	1520	if (dataoffset < 0)
1060	dataoffset += svlen;	1521	dataoffset += svlen;
1061		1522
1062	if (dataoffset < 0 || dataoffset > svlen)	1523	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	1524	croak ("dataoffset outside of data scalar");
1064		1525
1065	if (ix == REQ_WRITE)	1526	if (ix == REQ_WRITE)
1066	{	1527	{
1067	/* write: check length and adjust. */	1528	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	1529	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	1530	len = svlen - dataoffset;
1070	}	1531	}
1071	else	1532	else
1072	{	1533	{
1073	/* read: grow scalar as necessary */	1534	/* read: grow scalar as necessary */
1074	svptr = SvGROW (data, length + dataoffset);	1535	svptr = SvGROW (data, len + dataoffset + 1);
1075	}	1536	}
1076		1537
1077	if (length < 0)	1538	if (len < 0)
1078	croak ("length must not be negative");	1539	croak ("length must not be negative");
1079		1540
1080	{	1541	{
1081	dREQ;	1542	dREQ;
1082		1543
1083	req->type = ix;	1544	req->type = ix;
1084	req->fh = newSVsv (fh);	1545	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1086	: IoOFP (sv_2io (fh)));	1547	: IoOFP (sv_2io (fh)));
		1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	1549	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	1550	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	1551	req->ptr1 = (char *)svptr + dataoffset;
		1552	req->stroffset = dataoffset;
1091		1553
1092	if (!SvREADONLY (data))	1554	if (!SvREADONLY (data))
1093	{	1555	{
1094	SvREADONLY_on (data);	1556	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	1557	req->flags |= FLAG_SV2_RO_OFF;
1096	}	1558	}
1097		1559
1098	REQ_SEND;	1560	REQ_SEND;
1099	}	1561	}
1100	}	1562	}
1101		1563
1102	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
1103	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)
1104	SV * out_fh
1105	SV * in_fh
1106	UV in_offset
1107	UV length
1108	SV * callback
1109	PROTOTYPE: $$$$;$	1586	PROTOTYPE: $$$$;$
1110	PPCODE:	1587	PPCODE:
1111	{	1588	{
1112	dREQ;	1589	dREQ;
1113		1590
1114	req->type = REQ_SENDFILE;	1591	req->type = REQ_SENDFILE;
1115	req->fh = newSVsv (out_fh);	1592	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1117	req->fh2 = newSVsv (in_fh);	1594	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1119	req->offset = in_offset;	1596	req->offs = SvVAL64 (in_offset);
1120	req->length = length;	1597	req->size = length;
1121		1598
1122	REQ_SEND;	1599	REQ_SEND;
1123	}	1600	}
1124		1601
1125	void	1602	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1603	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$	1604	PROTOTYPE: $$$;$
1132	PPCODE:	1605	PPCODE:
1133	{	1606	{
1134	dREQ;	1607	dREQ;
1135		1608
1136	req->type = REQ_READAHEAD;	1609	req->type = REQ_READAHEAD;
1137	req->fh = newSVsv (fh);	1610	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1139	req->offset = offset;	1612	req->offs = SvVAL64 (offset);
1140	req->length = length;	1613	req->size = length;
1141		1614
1142	REQ_SEND;	1615	REQ_SEND;
1143	}	1616	}
1144		1617
1145	void	1618	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	1620	ALIAS:
1150	aio_stat = REQ_STAT	1621	aio_stat = REQ_STAT
1151	aio_lstat = REQ_LSTAT	1622	aio_lstat = REQ_LSTAT
1152	PPCODE:	1623	PPCODE:
1153	{	1624	{
1154	dREQ;	1625	dREQ;
1155		1626
1156	New (0, req->statdata, 1, Stat_t);	1627	req->ptr2 = malloc (sizeof (Stat_t));
1157	if (!req->statdata)	1628	if (!req->ptr2)
1158	{	1629	{
1159	req_free (req);	1630	req_destroy (req);
1160	croak ("out of memory during aio_req->statdata allocation");	1631	croak ("out of memory during aio_stat statdata allocation");
1161	}	1632	}
		1633
		1634	req->flags |= FLAG_PTR2_FREE;
		1635	req->sv1 = newSVsv (fh_or_path);
1162		1636
1163	if (SvPOK (fh_or_path))	1637	if (SvPOK (fh_or_path))
1164	{	1638	{
1165	req->type = ix;	1639	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);	1640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1168	}	1641	}
1169	else	1642	else
1170	{	1643	{
1171	req->type = REQ_FSTAT;	1644	req->type = REQ_FSTAT;
1172	req->fh = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1174	}	1646	}
1175		1647
1176	REQ_SEND;	1648	REQ_SEND;
1177	}	1649	}
1178		1650
1179	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
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1747	ALIAS:
1184	aio_unlink = REQ_UNLINK	1748	aio_unlink = REQ_UNLINK
1185	aio_rmdir = REQ_RMDIR	1749	aio_rmdir = REQ_RMDIR
1186	aio_readdir = REQ_READDIR	1750	aio_readdir = REQ_READDIR
1187	PPCODE:	1751	PPCODE:
1188	{	1752	{
1189	dREQ;	1753	dREQ;
1190		1754
1191	req->type = ix;	1755	req->type = ix;
1192	req->data = newSVsv (pathname);	1756	req->sv1 = newSVsv (pathname);
1193	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;
1194		1767
		1768	req->type = REQ_MKDIR;
		1769	req->sv1 = newSVsv (pathname);
		1770	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1771	req->mode = mode;
		1772
1195	REQ_SEND;	1773	REQ_SEND;
1196	}	1774	}
1197		1775
1198	void	1776	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:	1778	ALIAS:
1204	aio_link = REQ_LINK	1779	aio_link = REQ_LINK
1205	aio_symlink = REQ_SYMLINK	1780	aio_symlink = REQ_SYMLINK
1206	aio_rename = REQ_RENAME	1781	aio_rename = REQ_RENAME
1207	PPCODE:	1782	PPCODE:
1208	{	1783	{
1209	dREQ;	1784	dREQ;
1210		1785
1211	req->type = ix;	1786	req->type = ix;
1212	req->fh = newSVsv (oldpath);	1787	req->sv2 = newSVsv (oldpath);
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1788	req->ptr2 = SvPVbyte_nolen (req->sv2);
1214	req->data = newSVsv (newpath);	1789	req->sv1 = newSVsv (newpath);
1215	req->dataptr = SvPVbyte_nolen (req->data);	1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1216		1791
1217	REQ_SEND;	1792	REQ_SEND;
1218	}	1793	}
1219		1794
1220	void	1795	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1797	PPCODE:
1225	{	1798	{
1226	dREQ;	1799	dREQ;
1227		1800
1228	req->type = REQ_SLEEP;	1801	req->type = REQ_MKNOD;
1229	req->fd = delay < 0. ? 0 : delay;	1802	req->sv1 = newSVsv (pathname);
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1803	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1804	req->mode = (mode_t)mode;
		1805	req->offs = dev;
		1806
1232	REQ_SEND;	1807	REQ_SEND;
1233	}	1808	}
1234		1809
1235	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
1236	aio_group (callback=&PL_sv_undef)	1823	aio_group (SV *callback=&PL_sv_undef)
1237	SV * callback
1238	PROTOTYPE: ;$	1824	PROTOTYPE: ;$
1239	PPCODE:	1825	PPCODE:
1240	{	1826	{
1241	dREQ;	1827	dREQ;
1242		1828
1243	req->type = REQ_GROUP;	1829	req->type = REQ_GROUP;
		1830
1244	req_send (req);	1831	req_send (req);
1245
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1247	}	1833	}
1248		1834
1249	void	1835	void
1250	aio_nop (callback=&PL_sv_undef)	1836	aio_nop (SV *callback=&PL_sv_undef)
1251	SV * callback
1252	PPCODE:	1837	PPCODE:
1253	{	1838	{
1254	dREQ;	1839	dREQ;
1255		1840
1256	req->type = REQ_NOP;	1841	req->type = REQ_NOP;
1257		1842
1258	REQ_SEND;	1843	REQ_SEND;
1259	}	1844	}
1260		1845
1261	#if 0	1846	int
1262		1847	aioreq_pri (int pri = 0)
1263	void	1848	PROTOTYPE: ;$
1264	aio_pri (int pri = DEFAULT_PRI)
1265	CODE:	1849	CODE:
		1850	RETVAL = next_pri - PRI_BIAS;
		1851	if (items > 0)
		1852	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1853	if (pri < PRI_MIN) pri = PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1854	if (pri > PRI_MAX) pri = PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1855	next_pri = pri + PRI_BIAS;
		1856	}
		1857	OUTPUT:
		1858	RETVAL
1269		1859
1270	#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;
1271		1867
1272	void	1868	void
1273	flush ()	1869	flush ()
1274	PROTOTYPE:	1870	PROTOTYPE:
1275	CODE:	1871	CODE:
…		…
1277	{	1873	{
1278	poll_wait ();	1874	poll_wait ();
1279	poll_cb ();	1875	poll_cb ();
1280	}	1876	}
1281		1877
1282	void	1878	int
1283	poll()	1879	poll()
1284	PROTOTYPE:	1880	PROTOTYPE:
1285	CODE:	1881	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();	1882	poll_wait ();
1289	poll_cb ();	1883	RETVAL = poll_cb ();
1290	}	1884	OUTPUT:
		1885	RETVAL
1291		1886
1292	int	1887	int
1293	poll_fileno()	1888	poll_fileno()
1294	PROTOTYPE:	1889	PROTOTYPE:
1295	CODE:	1890	CODE:
…		…
1307		1902
1308	void	1903	void
1309	poll_wait()	1904	poll_wait()
1310	PROTOTYPE:	1905	PROTOTYPE:
1311	CODE:	1906	CODE:
1312	if (nreqs)
1313	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	}
1314		1945
1315	int	1946	int
1316	nreqs()	1947	nreqs()
1317	PROTOTYPE:	1948	PROTOTYPE:
1318	CODE:	1949	CODE:
1319	RETVAL = nreqs;	1950	RETVAL = nreqs;
1320	OUTPUT:	1951	OUTPUT:
1321	RETVAL	1952	RETVAL
1322		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
1323	PROTOTYPES: DISABLE	1980	PROTOTYPES: DISABLE
1324		1981
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		1983
1327	void	1984	void
1328	cancel (aio_req_ornot req)	1985	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	1986	CODE:
1331	req_cancel (req);	1987	req_cancel (req);
1332		1988
1333	void	1989	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1990	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1343	PPCODE:	1999	PPCODE:
1344	{	2000	{
1345	int i;	2001	int i;
1346	aio_req req;	2002	aio_req req;
1347		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
1348	if (grp->fd == 2)	2007	if (grp->int1 == 2)
1349	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");
1350		2009
1351	for (i = 1; i < items; ++i )	2010	for (i = 1; i < items; ++i )
1352	{	2011	{
1353	if (GIMME_V != G_VOID)	2012	if (GIMME_V != G_VOID)
…		…
1355		2014
1356	req = SvAIO_REQ (ST (i));	2015	req = SvAIO_REQ (ST (i));
1357		2016
1358	if (req)	2017	if (req)
1359	{	2018	{
1360	++grp->length;	2019	++grp->size;
1361	req->grp = grp;	2020	req->grp = grp;
1362		2021
1363	req->grp_prev = 0;	2022	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;	2023	req->grp_next = grp->grp_first;
1365		2024
…		…
1370	}	2029	}
1371	}	2030	}
1372	}	2031	}
1373		2032
1374	void	2033	void
		2034	cancel_subs (aio_req_ornot req)
		2035	CODE:
		2036	req_cancel_subs (req);
		2037
		2038	void
1375	result (aio_req grp, ...)	2039	result (aio_req grp, ...)
1376	CODE:	2040	CODE:
1377	{	2041	{
1378	int i;	2042	int i;
		2043	AV *av;
		2044
		2045	grp->errorno = errno;
		2046
1379	AV *av = newAV ();	2047	av = newAV ();
1380		2048
1381	for (i = 1; i < items; ++i )	2049	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	2050	av_push (av, newSVsv (ST (i)));
1383		2051
1384	SvREFCNT_dec (grp->data);	2052	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	2053	grp->sv1 = (SV *)av;
1386	}	2054	}
1387		2055
1388	void	2056	void
		2057	errno (aio_req grp, int errorno = errno)
		2058	CODE:
		2059	grp->errorno = errorno;
		2060
		2061	void
1389	feed_limit (aio_req grp, int limit)	2062	limit (aio_req grp, int limit)
1390	CODE:	2063	CODE:
1391	grp->fd2 = limit;	2064	grp->int2 = limit;
1392	aio_grp_feed (grp);	2065	aio_grp_feed (grp);
1393		2066
1394	void	2067	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	2068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1396	CODE:	2069	CODE:
1397	{	2070	{
1398	SvREFCNT_dec (grp->fh2);	2071	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	2072	grp->sv2 = newSVsv (callback);
1400		2073
1401	if (grp->fd2 <= 0)	2074	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	2075	grp->int2 = 2;
1403		2076
1404	aio_grp_feed (grp);	2077	aio_grp_feed (grp);
1405	}	2078	}
1406		2079

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