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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 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	92	/* buffer size for various temporary buffers */
50	# 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
51	#else	98	#else
52	# define STACKSIZE 8192	99	# define SvVAL64 SvNV
53	#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 */
54		111
55	enum {	112	enum {
56	REQ_QUIT,	113	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,	114	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	115	REQ_READ, REQ_WRITE,
59	REQ_SENDFILE,	116	REQ_READAHEAD, REQ_SENDFILE,
60	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,
61	REQ_FSYNC, REQ_FDATASYNC,	122	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
63	REQ_READDIR,	124	REQ_MKNOD, REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,	125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
65	REQ_GROUP, REQ_NOP,	126	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,	127	REQ_BUSY,
67	};	128	};
68		129
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	130	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	131	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		132
72	typedef struct aio_cb	133	typedef struct aio_cb
73	{	134	{
74	struct aio_cb *volatile next;	135	struct aio_cb *volatile next;
75		136
76	SV *data, *callback;	137	SV *callback;
77	SV *fh, *fh2;	138	SV *sv1, *sv2;
78	void *dataptr, *data2ptr;	139	void *ptr1, *ptr2;
79	Stat_t *statdata;
80	off_t offset;	140	off_t offs;
81	size_t length;	141	size_t size;
82	ssize_t result;	142	ssize_t result;
		143	double nv1, nv2;
83		144
84	STRLEN dataoffset;	145	STRLEN stroffset;
85	int type;	146	int type;
86	int fd, fd2;	147	int int1, int2, int3;
87	int errorno;	148	int errorno;
88	mode_t mode; /* open */	149	mode_t mode; /* open */
89		150
90	unsigned char flags;	151	unsigned char flags;
91	unsigned char pri;	152	unsigned char pri;
…		…
93	SV *self; /* the perl counterpart of this request, if any */	154	SV *self; /* the perl counterpart of this request, if any */
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
95	} aio_cb;	156	} aio_cb;
96		157
97	enum {	158	enum {
98	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) */
99	};	162	};
100		163
101	typedef aio_cb *aio_req;	164	typedef aio_cb *aio_req;
102	typedef aio_cb *aio_req_ornot;	165	typedef aio_cb *aio_req_ornot;
103		166
…		…
105	PRI_MIN = -4,	168	PRI_MIN = -4,
106	PRI_MAX = 4,	169	PRI_MAX = 4,
107		170
108	DEFAULT_PRI = 0,	171	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,	172	PRI_BIAS = -PRI_MIN,
		173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
110	};	174	};
111		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
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;	222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113		223
114	static int started, wanted;	224	static unsigned int started, idle, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;
117	static int respipe [2];
118		225
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	226	/* worker threads management */
120	# 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
121	#else	310	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	311
		312	# define get_nready() nready
		313	# define get_npending() npending
		314	# define get_nthreads() started
		315
123	#endif	316	#endif
124		317
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	318	/*
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	319	* a somewhat faster data structure might be nice, but
127	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;
128		327
129	static volatile aio_req reqs, reqe; /* queue start, queue end */	328	static reqq req_queue;
130	static volatile aio_req ress, rese; /* queue start, queue end */	329	static reqq res_queue;
131		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 ();
132	static void req_invoke (aio_req req);	373	static int req_invoke (aio_req req);
		374	static void req_destroy (aio_req req);
133	static void req_free (aio_req req);	375	static void req_cancel (aio_req req);
134		376
135	/* must be called at most once */	377	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	378	static SV *req_sv (aio_req req, const char *klass)
137	{	379	{
138	if (!req->self)	380	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	398	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	399	}
158		400
159	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
160	{	402	{
		403	block_sig ();
		404
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
162	{	406	{
163	int old_len = grp->length;	407	int old_len = grp->size;
164		408
165	if (grp->fh2 && SvOK (grp->fh2))	409	if (grp->sv2 && SvOK (grp->sv2))
166	{	410	{
167	dSP;	411	dSP;
168		412
169	ENTER;	413	ENTER;
170	SAVETMPS;	414	SAVETMPS;
171	PUSHMARK (SP);	415	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;	417	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
175	SPAGAIN;	419	SPAGAIN;
176	FREETMPS;	420	FREETMPS;
177	LEAVE;	421	LEAVE;
178	}	422	}
179		423
180	/* stop if no progress has been made */	424	/* stop if no progress has been made */
181	if (old_len == grp->length)	425	if (old_len == grp->size)
182	{	426	{
183	SvREFCNT_dec (grp->fh2);	427	SvREFCNT_dec (grp->sv2);
184	grp->fh2 = 0;	428	grp->sv2 = 0;
185	break;	429	break;
186	}	430	}
187	}	431	}
		432
		433	unblock_sig ();
188	}	434	}
189		435
190	static void aio_grp_dec (aio_req grp)	436	static void aio_grp_dec (aio_req grp)
191	{	437	{
192	--grp->length;	438	--grp->size;
193		439
194	/* call feeder, if applicable */	440	/* call feeder, if applicable */
195	aio_grp_feed (grp);	441	aio_grp_feed (grp);
196		442
197	/* finish, if done */	443	/* finish, if done */
198	if (!grp->length && grp->fd)	444	if (!grp->size && grp->int1)
199	{	445	{
		446	block_sig ();
		447
200	req_invoke (grp);	448	if (!req_invoke (grp))
		449	{
		450	req_destroy (grp);
		451	unblock_sig ();
		452	croak (0);
		453	}
		454
201	req_free (grp);	455	req_destroy (grp);
		456	unblock_sig ();
202	}	457	}
203	}	458	}
204		459
205	static void poll_wait ()	460	static int req_invoke (aio_req req)
206	{	461	{
207	fd_set rfd;	462	dSP;
208		463
209	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))
210	{	468	{
211	aio_req req;	469	ENTER;
212	pthread_mutex_lock (&reslock);	470	SAVETMPS;
213	req = ress;	471	PUSHMARK (SP);
214	pthread_mutex_unlock (&reslock);	472	EXTEND (SP, 1);
215		473
216	if (req)	474	switch (req->type)
217	return;	475	{
		476	case REQ_READDIR:
		477	{
		478	SV *rv = &PL_sv_undef;
218		479
219	FD_ZERO(&rfd);	480	if (req->result >= 0)
220	FD_SET(respipe [0], &rfd);	481	{
		482	int i;
		483	char *buf = req->ptr2;
		484	AV *av = newAV ();
221		485
222	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;
223	}	574	}
224	}
225		575
226	static void req_invoke (aio_req req)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{
243	case REQ_READDIR:
244	{
245	SV *rv = &PL_sv_undef;
246
247	if (req->result >= 0)
248	{
249	char *buf = req->data2ptr;
250	AV *av = newAV ();
251
252	while (req->result)
253	{
254	SV *sv = newSVpv (buf, 0);
255
256	av_push (av, sv);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{
320	req_free (req);
321	croak (0);
322	}
323	}
324
325	static void req_free (aio_req req)
326	{
327	if (req->grp)	576	if (req->grp)
328	{	577	{
329	aio_req grp = req->grp;	578	aio_req grp = req->grp;
330		579
331	/* unlink request */	580	/* unlink request */
…		…
336	grp->grp_first = req->grp_next;	585	grp->grp_first = req->grp_next;
337		586
338	aio_grp_dec (grp);	587	aio_grp_dec (grp);
339	}	588	}
340		589
		590	return !SvTRUE (ERRSV);
		591	}
		592
		593	static void req_destroy (aio_req req)
		594	{
341	if (req->self)	595	if (req->self)
342	{	596	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	597	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	598	SvREFCNT_dec (req->self);
345	}	599	}
346		600
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	601	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	602	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	603	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352		604
353	if (req->type == REQ_READDIR && req->result >= 0)	605	if (req->flags & FLAG_PTR2_FREE)
354	free (req->data2ptr);	606	free (req->ptr2);
355		607
356	Safefree (req);	608	Safefree (req);
357	}	609	}
358		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
359	static void req_cancel (aio_req req)	625	static void req_cancel (aio_req req)
360	{	626	{
361	req->flags |= FLAG_CANCELLED;	627	req->flags |= FLAG_CANCELLED;
362		628
363	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))
364	{	669	{
365	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);
366		678
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	679	X_UNLOCK (wrklock);
368	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);
369	}	772	}
370	}	773	}
371		774
372	static int poll_cb ()	775	static int poll_cb ()
373	{	776	{
374	dSP;	777	dSP;
375	int count = 0;	778	int count = 0;
		779	int maxreqs = max_poll_reqs;
376	int do_croak = 0;	780	int do_croak = 0;
		781	struct timeval tv_start, tv_now;
377	aio_req req;	782	aio_req req;
		783
		784	if (max_poll_time)
		785	gettimeofday (&tv_start, 0);
		786
		787	block_sig ();
378		788
379	for (;;)	789	for (;;)
380	{	790	{
381	pthread_mutex_lock (&reslock);	791	for (;;)
382	req = ress;
383
384	if (req)
385	{	792	{
386	ress = req->next;	793	maybe_start_thread ();
387		794
		795	X_LOCK (reslock);
		796	req = reqq_shift (&res_queue);
		797
388	if (!ress)	798	if (req)
389	{	799	{
		800	--npending;
		801
		802	if (!res_queue.size)
		803	{
390	/* read any signals sent by the worker threads */	804	/* read any signals sent by the worker threads */
391	char buf [32];	805	char buf [4];
392	while (read (respipe [0], buf, 32) == 32)	806	while (PerlSock_recv (respipe [0], buf, 4, 0) == 4)
		807	;
393	;	808	}
		809	}
394		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)
395	rese = 0;	845	break;
396	}	846	}
397	}	847	}
398		848
399	pthread_mutex_unlock (&reslock);	849	if (nreqs <= max_outstanding)
400
401	if (!req)
402	break;	850	break;
403		851
404	--nreqs;	852	poll_wait ();
405		853
406	if (req->type == REQ_QUIT)	854	++maxreqs;
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	855	}
435		856
		857	unblock_sig ();
436	return count;	858	return count;
437	}
438
439	static void *aio_proc(void *arg);
440
441	static void start_thread (void)
442	{
443	sigset_t fullsigset, oldsigset;
444	pthread_t tid;
445	pthread_attr_t attr;
446
447	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}
459
460	static void req_send (aio_req req)
461	{
462	while (started < wanted && nreqs >= started)
463	start_thread ();
464
465	++nreqs;
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{
473	reqe->next = req;
474	reqe = req;
475	}
476	else
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}
493
494	static void end_thread (void)
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499
500	req_send (req);
501	}
502
503	static void min_parallel (int nthreads)
504	{
505	if (wanted < nthreads)
506	wanted = nthreads;
507	}
508
509	static void max_parallel (int nthreads)
510	{
511	int cur = started;
512
513	if (wanted > nthreads)
514	wanted = nthreads;
515
516	while (cur > wanted)
517	{
518	end_thread ();
519	cur--;
520	}
521
522	while (started > wanted)
523	{
524	poll_wait ();
525	poll_cb ();
526	}
527	}
528
529	static void create_pipe ()
530	{
531	if (pipe (respipe))
532	croak ("unable to initialize result pipe");
533
534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
535	croak ("cannot set result pipe to nonblocking mode");
536
537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
538	croak ("cannot set result pipe to nonblocking mode");
539	}	859	}
540		860
541	/*****************************************************************************/	861	/*****************************************************************************/
542	/* work around various missing functions */	862	/* work around various missing functions */
543		863
…		…
548	/*	868	/*
549	* make our pread/pwrite safe against themselves, but not against	869	* make our pread/pwrite safe against themselves, but not against
550	* 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,
551	* but that's your problem, not mine.	871	* but that's your problem, not mine.
552	*/	872	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	873	static mutex_t preadwritelock = X_MUTEX_INIT;
554		874
555	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)
556	{	876	{
557	ssize_t res;	877	ssize_t res;
558	off_t ooffset;	878	off_t ooffset;
559		879
560	pthread_mutex_lock (&preadwritelock);	880	X_LOCK (preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);	881	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);	882	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);	883	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);	884	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);	885	X_UNLOCK (preadwritelock);
566		886
567	return res;	887	return res;
568	}	888	}
569		889
570	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)
571	{	891	{
572	ssize_t res;	892	ssize_t res;
573	off_t ooffset;	893	off_t ooffset;
574		894
575	pthread_mutex_lock (&preadwritelock);	895	X_LOCK (preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);	896	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);	897	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);	898	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);	899	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);	900	X_UNLOCK (preadwritelock);
581		901
582	return res;	902	return res;
583	}	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
584	#endif	932	#endif
585		933
586	#if !HAVE_FDATASYNC	934	#if !HAVE_FDATASYNC
587	# define fdatasync fsync	935	# define fdatasync fsync
588	#endif	936	#endif
589		937
590	#if !HAVE_READAHEAD	938	#if !HAVE_READAHEAD
591	# define readahead aio_readahead	939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
592		940
593	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)
594	{	942	{
595	char readahead_buf[4096];	943	size_t todo = count;
		944	dBUF;
596		945
597	while (count > 0)	946	while (todo > 0)
598	{	947	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
600		949
601	pread (fd, readahead_buf, len, offset);	950	pread (fd, aio_buf, len, offset);
602	offset += len;	951	offset += len;
603	count -= len;	952	todo -= len;
604	}	953	}
605		954
606	errno = 0;	955	errno = 0;
		956	return count;
607	}	957	}
		958
608	#endif	959	#endif
609		960
610	#if !HAVE_READDIR_R	961	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r	962	# define readdir_r aio_readdir_r
612		963
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	964	static mutex_t readdirlock = X_MUTEX_INIT;
614		965
615	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)
616	{	967	{
617	struct dirent *e;	968	X_DIRENT *e;
618	int errorno;	969	int errorno;
619		970
620	pthread_mutex_lock (&readdirlock);	971	X_LOCK (readdirlock);
621		972
622	e = readdir (dirp);	973	e = readdir (dirp);
623	errorno = errno;	974	errorno = errno;
624		975
625	if (e)	976	if (e)
…		…
628	strcpy (ent->d_name, e->d_name);	979	strcpy (ent->d_name, e->d_name);
629	}	980	}
630	else	981	else
631	*res = 0;	982	*res = 0;
632		983
633	pthread_mutex_unlock (&readdirlock);	984	X_UNLOCK (readdirlock);
634		985
635	errno = errorno;	986	errno = errorno;
636	return e ? 0 : -1;	987	return e ? 0 : -1;
637	}	988	}
638	#endif	989	#endif
639		990
640	/* sendfile always needs emulation */	991	/* sendfile always needs emulation */
641	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)
642	{	993	{
643	ssize_t res;	994	ssize_t res;
644		995
645	if (!count)	996	if (!count)
646	return 0;	997	return 0;
…		…
657	{	1008	{
658	off_t sbytes;	1009	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		1011
661	if (res < 0 && sbytes)	1012	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
663	res = sbytes;	1014	res = sbytes;
664	}	1015	}
665		1016
666	# elif __hpux	1017	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
695	#endif	1046	#endif
696	)	1047	)
697	)	1048	)
698	{	1049	{
699	/* emulate sendfile. this is a major pain in the ass */	1050	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];	1051	dBUF;
		1052
701	res = 0;	1053	res = 0;
702		1054
703	while (count)	1055	while (count)
704	{	1056	{
705	ssize_t cnt;	1057	ssize_t cnt;
706		1058
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1059	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
708		1060
709	if (cnt <= 0)	1061	if (cnt <= 0)
710	{	1062	{
711	if (cnt && !res) res = -1;	1063	if (cnt && !res) res = -1;
712	break;	1064	break;
713	}	1065	}
714		1066
715	cnt = write (ofd, buf, cnt);	1067	cnt = write (ofd, aio_buf, cnt);
716		1068
717	if (cnt <= 0)	1069	if (cnt <= 0)
718	{	1070	{
719	if (cnt && !res) res = -1;	1071	if (cnt && !res) res = -1;
720	break;	1072	break;
…		…
728		1080
729	return res;	1081	return res;
730	}	1082	}
731		1083
732	/* read a full directory */	1084	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)	1085	static void scandir_ (aio_req req, worker *self)
734	{	1086	{
735	DIR *dirp = opendir (path);	1087	DIR *dirp;
736	union	1088	union
737	{	1089	{
738	struct dirent d;	1090	X_DIRENT d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
740	} u;	1092	} *u;
741	struct dirent *entp;	1093	X_DIRENT *entp;
742	char *name, *names;	1094	char *name, *names;
743	int memlen = 4096;	1095	int memlen = 4096;
744	int memofs = 0;	1096	int memofs = 0;
745	int res = 0;	1097	int res = 0;
746	int errorno;
747		1098
748	if (!dirp)	1099	X_LOCK (wrklock);
749	return -1;	1100	self->dirp = dirp = opendir (req->ptr1);
750		1101	self->dbuf = u = malloc (sizeof (*u));
		1102	req->flags |= FLAG_PTR2_FREE;
751	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);
752		1156
753	for (;;)	1157	for (;;)
754	{	1158	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);	1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
756		1160
757	if (!entp)	1161	X_LOCK (reqlock);
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805		1162
806	for (;;)	1163	for (;;)
807	{	1164	{
808	req = reqs;	1165	self->req = req = reqq_shift (&req_queue);
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815		1166
816	if (req)	1167	if (req)
817	break;	1168	break;
818		1169
819	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;
820	}	1191	}
821		1192
822	pthread_mutex_unlock (&reqlock);	1193	--nready;
		1194
		1195	X_UNLOCK (reqlock);
823		1196
824	errno = 0; /* strictly unnecessary */	1197	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826		1198
827	if (!(req->flags & FLAG_CANCELLED))	1199	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)	1200	switch (req->type)
829	{	1201	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1202	case REQ_READ: req->result = req->offs >= 0
831	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;
832		1208
833	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;
834	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;
835		1211
836	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;
837	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;
838	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;
839		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
840	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;
841	case REQ_CLOSE: req->result = close (req->fd); break;	1224	case REQ_CLOSE: req->result = close (req->int1); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
843	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;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
846	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;
847		1233
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;	1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1236	case REQ_READDIR: scandir_ (req, self); break;
851		1237
852	case REQ_SLEEP:	1238	case REQ_BUSY:
		1239	#ifdef _WIN32
		1240	Sleep (req->nv1 * 1000.);
		1241	#else
853	{	1242	{
854	struct timeval tv;	1243	struct timeval tv;
855		1244
856	tv.tv_sec = req->fd;	1245	tv.tv_sec = req->nv1;
857	tv.tv_usec = req->fd2;	1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
858		1247
859	req->result = select (0, 0, 0, 0, &tv);	1248	req->result = select (0, 0, 0, 0, &tv);
860	}	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	}
861		1276
862	case REQ_GROUP:	1277	case REQ_GROUP:
863	case REQ_NOP:	1278	case REQ_NOP:
		1279	break;
		1280
864	case REQ_QUIT:	1281	case REQ_QUIT:
865	break;	1282	goto quit;
866		1283
867	default:	1284	default:
868	req->result = ENOSYS;	1285	req->result = -1;
869	break;	1286	break;
870	}	1287	}
871		1288
872	req->errorno = errno;	1289	req->errorno = errno;
873		1290
874	pthread_mutex_lock (&reslock);	1291	X_LOCK (reslock);
875		1292
876	req->next = 0;	1293	++npending;
877		1294
878	if (rese)	1295	if (!reqq_push (&res_queue, req))
879	{	1296	{
880	rese->next = req;	1297	/* write a dummy byte to the pipe so fh becomes ready */
881	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);
882	}	1303	}
883	else
884	{
885	rese = ress = req;
886		1304
887	/* write a dummy byte to the pipe so fh becomes ready */	1305	self->req = 0;
888	write (respipe [1], &respipe, 1);	1306	worker_clear (self);
889	}
890		1307
891	pthread_mutex_unlock (&reslock);	1308	X_UNLOCK (reslock);
892	}	1309	}
893	while (type != REQ_QUIT);	1310
		1311	quit:
		1312	X_LOCK (wrklock);
		1313	worker_free (self);
		1314	X_UNLOCK (wrklock);
894		1315
895	return 0;	1316	return 0;
		1317	}//D
896	}	1318	}
897		1319
898	/*****************************************************************************/	1320	/*****************************************************************************/
899		1321
900	static void atfork_prepare (void)	1322	static void atfork_prepare (void)
901	{	1323	{
902	pthread_mutex_lock (&reqlock);	1324	X_LOCK (wrklock);
903	pthread_mutex_lock (&reslock);	1325	X_LOCK (reqlock);
		1326	X_LOCK (reslock);
904	#if !HAVE_PREADWRITE	1327	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);	1328	X_LOCK (preadwritelock);
906	#endif	1329	#endif
907	#if !HAVE_READDIR_R	1330	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);	1331	X_LOCK (readdirlock);
909	#endif	1332	#endif
910	}	1333	}
911		1334
912	static void atfork_parent (void)	1335	static void atfork_parent (void)
913	{	1336	{
914	#if !HAVE_READDIR_R	1337	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);	1338	X_UNLOCK (readdirlock);
916	#endif	1339	#endif
917	#if !HAVE_PREADWRITE	1340	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);	1341	X_UNLOCK (preadwritelock);
919	#endif	1342	#endif
920	pthread_mutex_unlock (&reslock);	1343	X_UNLOCK (reslock);
921	pthread_mutex_unlock (&reqlock);	1344	X_UNLOCK (reqlock);
		1345	X_UNLOCK (wrklock);
922	}	1346	}
923		1347
924	static void atfork_child (void)	1348	static void atfork_child (void)
925	{	1349	{
926	aio_req prv;	1350	aio_req prv;
927		1351
928	started = 0;	1352	while (prv = reqq_shift (&req_queue))
		1353	req_destroy (prv);
929		1354
930	while (reqs)	1355	while (prv = reqq_shift (&res_queue))
		1356	req_destroy (prv);
		1357
		1358	while (wrk_first.next != &wrk_first)
931	{	1359	{
932	prv = reqs;	1360	worker *wrk = wrk_first.next;
933	reqs = prv->next;	1361
		1362	if (wrk->req)
		1363	req_destroy (wrk->req);
		1364
		1365	worker_clear (wrk);
934	req_free (prv);	1366	worker_free (wrk);
935	}	1367	}
936		1368
937	reqs = reqe = 0;	1369	started = 0;
938		1370	idle = 0;
939	while (ress)	1371	nreqs = 0;
940	{	1372	nready = 0;
941	prv = ress;	1373	npending = 0;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947		1374
948	close (respipe [0]);	1375	PerlSock_closesocket (respipe [0]);
949	close (respipe [1]);	1376	PerlSock_closesocket (respipe [1]);
		1377
950	create_pipe ();	1378	create_pipe (respipe);
951		1379
952	atfork_parent ();	1380	atfork_parent ();
953	}	1381	}
954		1382
955	#define dREQ \	1383	#define dREQ \
…		…
978	PROTOTYPES: ENABLE	1406	PROTOTYPES: ENABLE
979		1407
980	BOOT:	1408	BOOT:
981	{	1409	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	1410	HV *stash = gv_stashpv ("IO::AIO", 1);
		1411
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	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);
986		1424
987	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
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
989	}	1434	}
990		1435
991	void	1436	void
992	min_parallel (nthreads)	1437	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	1438	PROTOTYPE: $
		1439	CODE:
		1440	max_poll_reqs = nreqs;
995		1441
996	void	1442	void
997	max_parallel (nthreads)	1443	max_poll_time (double nseconds)
998	int nthreads
999	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);
1000		1461
1001	int	1462	int
1002	max_outstanding (nreqs)	1463	max_outstanding (int maxreqs)
1003	int nreqs	1464	PROTOTYPE: $
1004	PROTOTYPE: $
1005	CODE:	1465	CODE:
1006	RETVAL = max_outstanding;	1466	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;	1467	max_outstanding = maxreqs;
		1468	OUTPUT:
		1469	RETVAL
1008		1470
1009	void	1471	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1472	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1011	SV * pathname
1012	int flags
1013	int mode
1014	SV * callback
1015	PROTOTYPE: $$$;$	1473	PROTOTYPE: $$$;$
1016	PPCODE:	1474	PPCODE:
1017	{	1475	{
1018	dREQ;	1476	dREQ;
1019		1477
1020	req->type = REQ_OPEN;	1478	req->type = REQ_OPEN;
1021	req->data = newSVsv (pathname);	1479	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1480	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	1481	req->int1 = flags;
1024	req->mode = mode;	1482	req->mode = mode;
1025		1483
1026	REQ_SEND;	1484	REQ_SEND;
1027	}	1485	}
1028		1486
1029	void	1487	void
1030	aio_close (fh,callback=&PL_sv_undef)	1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$	1489	PROTOTYPE: $;$
1034	ALIAS:	1490	ALIAS:
1035	aio_close = REQ_CLOSE	1491	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC	1492	aio_fsync = REQ_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC	1493	aio_fdatasync = REQ_FDATASYNC
1038	PPCODE:	1494	PPCODE:
1039	{	1495	{
1040	dREQ;	1496	dREQ;
1041		1497
1042	req->type = ix;	1498	req->type = ix;
1043	req->fh = newSVsv (fh);	1499	req->sv1 = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1500	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		1501
1046	REQ_SEND (req);	1502	REQ_SEND (req);
1047	}	1503	}
1048		1504
1049	void	1505	void
1050	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)
1051	SV * fh
1052	UV offset
1053	UV length
1054	SV * data
1055	UV dataoffset
1056	SV * callback
1057	ALIAS:	1507	ALIAS:
1058	aio_read = REQ_READ	1508	aio_read = REQ_READ
1059	aio_write = REQ_WRITE	1509	aio_write = REQ_WRITE
1060	PROTOTYPE: $$$$$;$	1510	PROTOTYPE: $$$$$;$
1061	PPCODE:	1511	PPCODE:
1062	{	1512	{
1063	aio_req req;
1064	STRLEN svlen;	1513	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	1514	char *svptr = SvPVbyte (data, svlen);
		1515	UV len = SvUV (length);
1066		1516
1067	SvUPGRADE (data, SVt_PV);	1517	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	1518	SvPOK_on (data);
1069		1519
1070	if (dataoffset < 0)	1520	if (dataoffset < 0)
1071	dataoffset += svlen;	1521	dataoffset += svlen;
1072		1522
1073	if (dataoffset < 0 || dataoffset > svlen)	1523	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	1524	croak ("dataoffset outside of data scalar");
1075		1525
1076	if (ix == REQ_WRITE)	1526	if (ix == REQ_WRITE)
1077	{	1527	{
1078	/* write: check length and adjust. */	1528	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	1529	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	1530	len = svlen - dataoffset;
1081	}	1531	}
1082	else	1532	else
1083	{	1533	{
1084	/* read: grow scalar as necessary */	1534	/* read: grow scalar as necessary */
1085	svptr = SvGROW (data, length + dataoffset);	1535	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	1536	}
1087		1537
1088	if (length < 0)	1538	if (len < 0)
1089	croak ("length must not be negative");	1539	croak ("length must not be negative");
1090		1540
1091	{	1541	{
1092	dREQ;	1542	dREQ;
1093		1543
1094	req->type = ix;	1544	req->type = ix;
1095	req->fh = newSVsv (fh);	1545	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	1547	: IoOFP (sv_2io (fh)));
		1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	1549	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	1550	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1551	req->ptr1 = (char *)svptr + dataoffset;
		1552	req->stroffset = dataoffset;
1102		1553
1103	if (!SvREADONLY (data))	1554	if (!SvREADONLY (data))
1104	{	1555	{
1105	SvREADONLY_on (data);	1556	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1557	req->flags |= FLAG_SV2_RO_OFF;
1107	}	1558	}
1108		1559
1109	REQ_SEND;	1560	REQ_SEND;
1110	}	1561	}
1111	}	1562	}
1112		1563
1113	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
1114	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)
1115	SV * out_fh
1116	SV * in_fh
1117	UV in_offset
1118	UV length
1119	SV * callback
1120	PROTOTYPE: $$$$;$	1586	PROTOTYPE: $$$$;$
1121	PPCODE:	1587	PPCODE:
1122	{	1588	{
1123	dREQ;	1589	dREQ;
1124		1590
1125	req->type = REQ_SENDFILE;	1591	req->type = REQ_SENDFILE;
1126	req->fh = newSVsv (out_fh);	1592	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	1594	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	1596	req->offs = SvVAL64 (in_offset);
1131	req->length = length;	1597	req->size = length;
1132		1598
1133	REQ_SEND;	1599	REQ_SEND;
1134	}	1600	}
1135		1601
1136	void	1602	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1603	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$	1604	PROTOTYPE: $$$;$
1143	PPCODE:	1605	PPCODE:
1144	{	1606	{
1145	dREQ;	1607	dREQ;
1146		1608
1147	req->type = REQ_READAHEAD;	1609	req->type = REQ_READAHEAD;
1148	req->fh = newSVsv (fh);	1610	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	1612	req->offs = SvVAL64 (offset);
1151	req->length = length;	1613	req->size = length;
1152		1614
1153	REQ_SEND;	1615	REQ_SEND;
1154	}	1616	}
1155		1617
1156	void	1618	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	1620	ALIAS:
1161	aio_stat = REQ_STAT	1621	aio_stat = REQ_STAT
1162	aio_lstat = REQ_LSTAT	1622	aio_lstat = REQ_LSTAT
1163	PPCODE:	1623	PPCODE:
1164	{	1624	{
1165	dREQ;	1625	dREQ;
1166		1626
1167	New (0, req->statdata, 1, Stat_t);	1627	req->ptr2 = malloc (sizeof (Stat_t));
1168	if (!req->statdata)	1628	if (!req->ptr2)
1169	{	1629	{
1170	req_free (req);	1630	req_destroy (req);
1171	croak ("out of memory during aio_req->statdata allocation");	1631	croak ("out of memory during aio_stat statdata allocation");
1172	}	1632	}
		1633
		1634	req->flags |= FLAG_PTR2_FREE;
		1635	req->sv1 = newSVsv (fh_or_path);
1173		1636
1174	if (SvPOK (fh_or_path))	1637	if (SvPOK (fh_or_path))
1175	{	1638	{
1176	req->type = ix;	1639	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	1640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	1641	}
1180	else	1642	else
1181	{	1643	{
1182	req->type = REQ_FSTAT;	1644	req->type = REQ_FSTAT;
1183	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	1646	}
1186		1647
1187	REQ_SEND;	1648	REQ_SEND;
1188	}	1649	}
1189		1650
1190	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
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	1747	ALIAS:
1195	aio_unlink = REQ_UNLINK	1748	aio_unlink = REQ_UNLINK
1196	aio_rmdir = REQ_RMDIR	1749	aio_rmdir = REQ_RMDIR
1197	aio_readdir = REQ_READDIR	1750	aio_readdir = REQ_READDIR
1198	PPCODE:	1751	PPCODE:
1199	{	1752	{
1200	dREQ;	1753	dREQ;
1201		1754
1202	req->type = ix;	1755	req->type = ix;
1203	req->data = newSVsv (pathname);	1756	req->sv1 = newSVsv (pathname);
1204	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;
1205		1767
		1768	req->type = REQ_MKDIR;
		1769	req->sv1 = newSVsv (pathname);
		1770	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1771	req->mode = mode;
		1772
1206	REQ_SEND;	1773	REQ_SEND;
1207	}	1774	}
1208		1775
1209	void	1776	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:	1778	ALIAS:
1215	aio_link = REQ_LINK	1779	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK	1780	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME	1781	aio_rename = REQ_RENAME
1218	PPCODE:	1782	PPCODE:
1219	{	1783	{
1220	dREQ;	1784	dREQ;
1221		1785
1222	req->type = ix;	1786	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1787	req->sv2 = newSVsv (oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1788	req->ptr2 = SvPVbyte_nolen (req->sv2);
1225	req->data = newSVsv (newpath);	1789	req->sv1 = newSVsv (newpath);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227		1791
1228	REQ_SEND;	1792	REQ_SEND;
1229	}	1793	}
1230		1794
1231	void	1795	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	1797	PPCODE:
1236	{	1798	{
1237	dREQ;	1799	dREQ;
1238		1800
1239	req->type = REQ_SLEEP;	1801	req->type = REQ_MKNOD;
1240	req->fd = delay < 0. ? 0 : delay;	1802	req->sv1 = newSVsv (pathname);
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1803	req->ptr1 = SvPVbyte_nolen (req->sv1);
1242		1804	req->mode = (mode_t)mode;
		1805	req->offs = dev;
		1806
1243	REQ_SEND;	1807	REQ_SEND;
1244	}	1808	}
1245		1809
1246	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
1247	aio_group (callback=&PL_sv_undef)	1823	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$	1824	PROTOTYPE: ;$
1250	PPCODE:	1825	PPCODE:
1251	{	1826	{
1252	dREQ;	1827	dREQ;
1253		1828
1254	req->type = REQ_GROUP;	1829	req->type = REQ_GROUP;
		1830
1255	req_send (req);	1831	req_send (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	1833	}
1259		1834
1260	void	1835	void
1261	aio_nop (callback=&PL_sv_undef)	1836	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback
1263	PPCODE:	1837	PPCODE:
1264	{	1838	{
1265	dREQ;	1839	dREQ;
1266		1840
1267	req->type = REQ_NOP;	1841	req->type = REQ_NOP;
1268		1842
1269	REQ_SEND;	1843	REQ_SEND;
1270	}	1844	}
1271		1845
1272	#if 0	1846	int
1273		1847	aioreq_pri (int pri = 0)
1274	void	1848	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1849	CODE:
		1850	RETVAL = next_pri - PRI_BIAS;
		1851	if (items > 0)
		1852	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1853	if (pri < PRI_MIN) pri = PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1854	if (pri > PRI_MAX) pri = PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1855	next_pri = pri + PRI_BIAS;
		1856	}
		1857	OUTPUT:
		1858	RETVAL
1280		1859
1281	#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;
1282		1867
1283	void	1868	void
1284	flush ()	1869	flush ()
1285	PROTOTYPE:	1870	PROTOTYPE:
1286	CODE:	1871	CODE:
…		…
1288	{	1873	{
1289	poll_wait ();	1874	poll_wait ();
1290	poll_cb ();	1875	poll_cb ();
1291	}	1876	}
1292		1877
1293	void	1878	int
1294	poll()	1879	poll()
1295	PROTOTYPE:	1880	PROTOTYPE:
1296	CODE:	1881	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	1882	poll_wait ();
1300	poll_cb ();	1883	RETVAL = poll_cb ();
1301	}	1884	OUTPUT:
		1885	RETVAL
1302		1886
1303	int	1887	int
1304	poll_fileno()	1888	poll_fileno()
1305	PROTOTYPE:	1889	PROTOTYPE:
1306	CODE:	1890	CODE:
…		…
1318		1902
1319	void	1903	void
1320	poll_wait()	1904	poll_wait()
1321	PROTOTYPE:	1905	PROTOTYPE:
1322	CODE:	1906	CODE:
1323	if (nreqs)
1324	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	}
1325		1945
1326	int	1946	int
1327	nreqs()	1947	nreqs()
1328	PROTOTYPE:	1948	PROTOTYPE:
1329	CODE:	1949	CODE:
1330	RETVAL = nreqs;	1950	RETVAL = nreqs;
1331	OUTPUT:	1951	OUTPUT:
1332	RETVAL	1952	RETVAL
1333		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
1334	PROTOTYPES: DISABLE	1980	PROTOTYPES: DISABLE
1335		1981
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1983
1338	void	1984	void
1339	cancel (aio_req_ornot req)	1985	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1986	CODE:
1342	req_cancel (req);	1987	req_cancel (req);
1343		1988
1344	void	1989	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1990	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1354	PPCODE:	1999	PPCODE:
1355	{	2000	{
1356	int i;	2001	int i;
1357	aio_req req;	2002	aio_req req;
1358		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
1359	if (grp->fd == 2)	2007	if (grp->int1 == 2)
1360	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");
1361		2009
1362	for (i = 1; i < items; ++i )	2010	for (i = 1; i < items; ++i )
1363	{	2011	{
1364	if (GIMME_V != G_VOID)	2012	if (GIMME_V != G_VOID)
…		…
1366		2014
1367	req = SvAIO_REQ (ST (i));	2015	req = SvAIO_REQ (ST (i));
1368		2016
1369	if (req)	2017	if (req)
1370	{	2018	{
1371	++grp->length;	2019	++grp->size;
1372	req->grp = grp;	2020	req->grp = grp;
1373		2021
1374	req->grp_prev = 0;	2022	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;	2023	req->grp_next = grp->grp_first;
1376		2024
…		…
1381	}	2029	}
1382	}	2030	}
1383	}	2031	}
1384		2032
1385	void	2033	void
		2034	cancel_subs (aio_req_ornot req)
		2035	CODE:
		2036	req_cancel_subs (req);
		2037
		2038	void
1386	result (aio_req grp, ...)	2039	result (aio_req grp, ...)
1387	CODE:	2040	CODE:
1388	{	2041	{
1389	int i;	2042	int i;
		2043	AV *av;
		2044
		2045	grp->errorno = errno;
		2046
1390	AV *av = newAV ();	2047	av = newAV ();
1391		2048
1392	for (i = 1; i < items; ++i )	2049	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	2050	av_push (av, newSVsv (ST (i)));
1394		2051
1395	SvREFCNT_dec (grp->data);	2052	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	2053	grp->sv1 = (SV *)av;
1397	}	2054	}
1398		2055
1399	void	2056	void
		2057	errno (aio_req grp, int errorno = errno)
		2058	CODE:
		2059	grp->errorno = errorno;
		2060
		2061	void
1400	feed_limit (aio_req grp, int limit)	2062	limit (aio_req grp, int limit)
1401	CODE:	2063	CODE:
1402	grp->fd2 = limit;	2064	grp->int2 = limit;
1403	aio_grp_feed (grp);	2065	aio_grp_feed (grp);
1404		2066
1405	void	2067	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	2068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	2069	CODE:
1408	{	2070	{
1409	SvREFCNT_dec (grp->fh2);	2071	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	2072	grp->sv2 = newSVsv (callback);
1411		2073
1412	if (grp->fd2 <= 0)	2074	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	2075	grp->int2 = 2;
1414		2076
1415	aio_grp_feed (grp);	2077	aio_grp_feed (grp);
1416	}	2078	}
1417		2079

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