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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 1.107 by root, Wed Oct 3 21:27:51 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	static HV *stash;
		103
		104	#define dBUF \
		105	char *aio_buf; \
		106	X_LOCK (wrklock); \
		107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		108	X_UNLOCK (wrklock); \
		109	if (!aio_buf) \
		110	return -1;
		111
		112	typedef SV SV8; /* byte-sv, used for argument-checking */
49		113
50	enum {	114	enum {
51	REQ_QUIT,	115	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		120	REQ_TRUNCATE, REQ_FTRUNCATE,
		121	REQ_UTIME, REQ_FUTIME,
		122	REQ_CHMOD, REQ_FCHMOD,
		123	REQ_CHOWN, REQ_FCHOWN,
56	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_GROUP, REQ_NOP,	128	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,	129	REQ_BUSY,
62	};	130	};
63		131
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	132	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	133	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		134
67	typedef struct aio_cb	135	typedef struct aio_cb
68	{	136	{
69	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
70		138
71	SV *data, *callback;	139	SV *callback;
72	SV *fh, *fh2;	140	SV *sv1, *sv2;
73	void *dataptr, *data2ptr;	141	void *ptr1, *ptr2;
74	Stat_t *statdata;
75	off_t offset;	142	off_t offs;
76	size_t length;	143	size_t size;
77	ssize_t result;	144	ssize_t result;
		145	double nv1, nv2;
78		146
79	STRLEN dataoffset;	147	STRLEN stroffset;
80	int type;	148	int type;
81	int fd, fd2;	149	int int1, int2, int3;
82	int errorno;	150	int errorno;
83	mode_t mode; /* open */	151	mode_t mode; /* open */
84		152
85	unsigned char flags;	153	unsigned char flags;
86	unsigned char pri;	154	unsigned char pri;
…		…
88	SV *self; /* the perl counterpart of this request, if any */	156	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;	158	} aio_cb;
91		159
92	enum {	160	enum {
93	FLAG_CANCELLED = 0x01,	161	FLAG_CANCELLED = 0x01, /* request was cancelled */
		162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
94	};	164	};
95		165
96	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
97	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
98		168
…		…
100	PRI_MIN = -4,	170	PRI_MIN = -4,
101	PRI_MAX = 4,	171	PRI_MAX = 4,
102		172
103	DEFAULT_PRI = 0,	173	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,	174	PRI_BIAS = -PRI_MIN,
		175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
105	};	176	};
106		177
		178	#define AIO_TICKS ((1000000 + 1023) >> 10)
		179
		180	static unsigned int max_poll_time = 0;
		181	static unsigned int max_poll_reqs = 0;
		182
		183	/* calculcate time difference in ~1/AIO_TICKS of a second */
		184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		185	{
		186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		188	}
		189
		190	static thread_t main_tid;
		191	static int main_sig;
		192	static int block_sig_level;
		193
		194	void block_sig ()
		195	{
		196	sigset_t ss;
		197
		198	if (block_sig_level++)
		199	return;
		200
		201	if (!main_sig)
		202	return;
		203
		204	sigemptyset (&ss);
		205	sigaddset (&ss, main_sig);
		206	pthread_sigmask (SIG_BLOCK, &ss, 0);
		207	}
		208
		209	void unblock_sig ()
		210	{
		211	sigset_t ss;
		212
		213	if (--block_sig_level)
		214	return;
		215
		216	if (!main_sig)
		217	return;
		218
		219	sigemptyset (&ss);
		220	sigaddset (&ss, main_sig);
		221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		222	}
		223
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;	224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108		225
109	static int started, wanted;	226	static unsigned int started, idle, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;
112	static int respipe [2];
113		227
		228	/* worker threads management */
		229	static mutex_t wrklock = X_MUTEX_INIT;
		230
		231	typedef struct worker {
		232	/* locked by wrklock */
		233	struct worker *prev, *next;
		234
		235	thread_t tid;
		236
		237	/* locked by reslock, reqlock or wrklock */
		238	aio_req req; /* currently processed request */
		239	void *dbuf;
		240	DIR *dirp;
		241	} worker;
		242
		243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		244
		245	static void worker_clear (worker *wrk)
		246	{
		247	if (wrk->dirp)
		248	{
		249	closedir (wrk->dirp);
		250	wrk->dirp = 0;
		251	}
		252
		253	if (wrk->dbuf)
		254	{
		255	free (wrk->dbuf);
		256	wrk->dbuf = 0;
		257	}
		258	}
		259
		260	static void worker_free (worker *wrk)
		261	{
		262	wrk->next->prev = wrk->prev;
		263	wrk->prev->next = wrk->next;
		264
		265	free (wrk);
		266	}
		267
		268	static volatile unsigned int nreqs, nready, npending;
		269	static volatile unsigned int max_idle = 4;
		270	static volatile unsigned int max_outstanding = 0xffffffff;
		271	static int respipe_osf [2], respipe [2] = { -1, -1 };
		272
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	273	static mutex_t reslock = X_MUTEX_INIT;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	274	static mutex_t reqlock = X_MUTEX_INIT;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
117		276
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	277	#if WORDACCESS_UNSAFE
119	static volatile aio_req ress, rese; /* queue start, queue end */
120		278
		279	static unsigned int get_nready ()
		280	{
		281	unsigned int retval;
		282
		283	X_LOCK (reqlock);
		284	retval = nready;
		285	X_UNLOCK (reqlock);
		286
		287	return retval;
		288	}
		289
		290	static unsigned int get_npending ()
		291	{
		292	unsigned int retval;
		293
		294	X_LOCK (reslock);
		295	retval = npending;
		296	X_UNLOCK (reslock);
		297
		298	return retval;
		299	}
		300
		301	static unsigned int get_nthreads ()
		302	{
		303	unsigned int retval;
		304
		305	X_LOCK (wrklock);
		306	retval = started;
		307	X_UNLOCK (wrklock);
		308
		309	return retval;
		310	}
		311
		312	#else
		313
		314	# define get_nready() nready
		315	# define get_npending() npending
		316	# define get_nthreads() started
		317
		318	#endif
		319
		320	/*
		321	* a somewhat faster data structure might be nice, but
		322	* with 8 priorities this actually needs <20 insns
		323	* per shift, the most expensive operation.
		324	*/
		325	typedef struct {
		326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		327	int size;
		328	} reqq;
		329
		330	static reqq req_queue;
		331	static reqq res_queue;
		332
		333	int reqq_push (reqq *q, aio_req req)
		334	{
		335	int pri = req->pri;
		336	req->next = 0;
		337
		338	if (q->qe[pri])
		339	{
		340	q->qe[pri]->next = req;
		341	q->qe[pri] = req;
		342	}
		343	else
		344	q->qe[pri] = q->qs[pri] = req;
		345
		346	return q->size++;
		347	}
		348
		349	aio_req reqq_shift (reqq *q)
		350	{
		351	int pri;
		352
		353	if (!q->size)
		354	return 0;
		355
		356	--q->size;
		357
		358	for (pri = NUM_PRI; pri--; )
		359	{
		360	aio_req req = q->qs[pri];
		361
		362	if (req)
		363	{
		364	if (!(q->qs[pri] = req->next))
		365	q->qe[pri] = 0;
		366
		367	return req;
		368	}
		369	}
		370
		371	abort ();
		372	}
		373
		374	static int poll_cb ();
121	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
		376	static void req_destroy (aio_req req);
122	static void req_free (aio_req req);	377	static void req_cancel (aio_req req);
123		378
124	/* must be called at most once */	379	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
126	{	381	{
127	if (!req->self)	382	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	401	}
147		402
148	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
149	{	404	{
		405	block_sig ();
		406
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
151	{	408	{
152	int old_len = grp->length;	409	int old_len = grp->size;
153		410
154	if (grp->fh2 && SvOK (grp->fh2))	411	if (grp->sv2 && SvOK (grp->sv2))
155	{	412	{
156	dSP;	413	dSP;
157		414
158	ENTER;	415	ENTER;
159	SAVETMPS;	416	SAVETMPS;
160	PUSHMARK (SP);	417	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;	419	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);	420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
164	SPAGAIN;	421	SPAGAIN;
165	FREETMPS;	422	FREETMPS;
166	LEAVE;	423	LEAVE;
167	}	424	}
168		425
169	/* stop if no progress has been made */	426	/* stop if no progress has been made */
170	if (old_len == grp->length)	427	if (old_len == grp->size)
171	{	428	{
172	SvREFCNT_dec (grp->fh2);	429	SvREFCNT_dec (grp->sv2);
173	grp->fh2 = 0;	430	grp->sv2 = 0;
174	break;	431	break;
175	}	432	}
176	}	433	}
		434
		435	unblock_sig ();
177	}	436	}
178		437
179	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
180	{	439	{
181	--grp->length;	440	--grp->size;
182		441
183	/* call feeder, if applicable */	442	/* call feeder, if applicable */
184	aio_grp_feed (grp);	443	aio_grp_feed (grp);
185		444
186	/* finish, if done */	445	/* finish, if done */
187	if (!grp->length && grp->fd)	446	if (!grp->size && grp->int1)
188	{	447	{
		448	block_sig ();
		449
189	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
190	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
191	}	459	}
192	}	460	}
193		461
194	static void poll_wait ()	462	static int req_invoke (aio_req req)
195	{	463	{
196	fd_set rfd;	464	dSP;
197		465
198	while (nreqs)	466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
		468
		469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
199	{	470	{
200	aio_req req;	471	ENTER;
201	pthread_mutex_lock (&reslock);	472	SAVETMPS;
202	req = ress;	473	PUSHMARK (SP);
203	pthread_mutex_unlock (&reslock);	474	EXTEND (SP, 1);
204		475
205	if (req)	476	switch (req->type)
206	return;	477	{
		478	case REQ_READDIR:
		479	{
		480	SV *rv = &PL_sv_undef;
207		481
208	FD_ZERO(&rfd);	482	if (req->result >= 0)
209	FD_SET(respipe [0], &rfd);	483	{
		484	int i;
		485	char *buf = req->ptr2;
		486	AV *av = newAV ();
210		487
211	select (respipe [0] + 1, &rfd, 0, 0, 0);	488	av_extend (av, req->result - 1);
		489
		490	for (i = 0; i < req->result; ++i)
		491	{
		492	SV *sv = newSVpv (buf, 0);
		493
		494	av_store (av, i, sv);
		495	buf += SvCUR (sv) + 1;
		496	}
		497
		498	rv = sv_2mortal (newRV_noinc ((SV *)av));
		499	}
		500
		501	PUSHs (rv);
		502	}
		503	break;
		504
		505	case REQ_OPEN:
		506	{
		507	/* convert fd to fh */
		508	SV *fh = &PL_sv_undef;
		509
		510	if (req->result >= 0)
		511	{
		512	GV *gv = (GV *)sv_newmortal ();
		513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		514	char sym [64];
		515	int symlen;
		516
		517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		518	gv_init (gv, stash, sym, symlen, 0);
		519
		520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	req->result
		526	);
		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = gv;
		530	}
		531
		532	XPUSHs (fh);
		533	}
		534	break;
		535
		536	case REQ_GROUP:
		537	req->int1 = 2; /* mark group as finished */
		538
		539	if (req->sv1)
		540	{
		541	int i;
		542	AV *av = (AV *)req->sv1;
		543
		544	EXTEND (SP, AvFILL (av) + 1);
		545	for (i = 0; i <= AvFILL (av); ++i)
		546	PUSHs (*av_fetch (av, i, 0));
		547	}
		548	break;
		549
		550	case REQ_NOP:
		551	case REQ_BUSY:
		552	break;
		553
		554	case REQ_READLINK:
		555	if (req->result > 0)
		556	{
		557	SvCUR_set (req->sv2, req->result);
		558	*SvEND (req->sv2) = 0;
		559	PUSHs (req->sv2);
		560	}
		561	break;
		562
		563	case REQ_STAT:
		564	case REQ_LSTAT:
		565	case REQ_FSTAT:
		566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		567	PL_laststatval = req->result;
		568	PL_statcache = *(Stat_t *)(req->ptr2);
		569	PUSHs (sv_2mortal (newSViv (req->result)));
		570	break;
		571
		572	case REQ_READ:
		573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		574	*SvEND (req->sv2) = 0;
		575	PUSHs (sv_2mortal (newSViv (req->result)));
		576	break;
		577
		578	default:
		579	PUSHs (sv_2mortal (newSViv (req->result)));
		580	break;
		581	}
		582
		583	errno = req->errorno;
		584
		585	PUTBACK;
		586	call_sv (req->callback, G_VOID | G_EVAL);
		587	SPAGAIN;
		588
		589	FREETMPS;
		590	LEAVE;
212	}	591	}
213	}
214		592
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)	593	if (req->grp)
317	{	594	{
318	aio_req grp = req->grp;	595	aio_req grp = req->grp;
319		596
320	/* unlink request */	597	/* unlink request */
…		…
325	grp->grp_first = req->grp_next;	602	grp->grp_first = req->grp_next;
326		603
327	aio_grp_dec (grp);	604	aio_grp_dec (grp);
328	}	605	}
329		606
		607	return !SvTRUE (ERRSV);
		608	}
		609
		610	static void req_destroy (aio_req req)
		611	{
330	if (req->self)	612	if (req->self)
331	{	613	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	614	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	615	SvREFCNT_dec (req->self);
334	}	616	}
335		617
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	618	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	619	SvREFCNT_dec (req->sv2);
339	SvREFCNT_dec (req->callback);	620	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341		621
342	if (req->type == REQ_READDIR && req->result >= 0)	622	if (req->flags & FLAG_PTR2_FREE)
343	free (req->data2ptr);	623	free (req->ptr2);
344		624
345	Safefree (req);	625	Safefree (req);
346	}	626	}
347		627
		628	static void req_cancel_subs (aio_req grp)
		629	{
		630	aio_req sub;
		631
		632	if (grp->type != REQ_GROUP)
		633	return;
		634
		635	SvREFCNT_dec (grp->sv2);
		636	grp->sv2 = 0;
		637
		638	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		639	req_cancel (sub);
		640	}
		641
348	static void req_cancel (aio_req req)	642	static void req_cancel (aio_req req)
349	{	643	{
350	req->flags |= FLAG_CANCELLED;	644	req->flags |= FLAG_CANCELLED;
351		645
352	if (req->type == REQ_GROUP)	646	req_cancel_subs (req);
		647	}
		648
		649	#ifdef USE_SOCKETS_AS_HANDLES
		650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		651	#else
		652	# define TO_SOCKET(x) (x)
		653	#endif
		654
		655	static void
		656	create_respipe ()
		657	{
		658	int old_readfd = respipe [0];
		659
		660	if (respipe [1] >= 0)
		661	respipe_close (TO_SOCKET (respipe [1]));
		662
		663	#ifdef _WIN32
		664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		665	#else
		666	if (pipe (respipe))
		667	#endif
		668	croak ("unable to initialize result pipe");
		669
		670	if (old_readfd >= 0)
353	{	671	{
354	aio_req sub;	672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		673	croak ("unable to initialize result pipe(2)");
355		674
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	675	respipe_close (respipe [0]);
357	req_cancel (sub);	676	respipe [0] = old_readfd;
		677	}
		678
		679	#ifdef _WIN32
		680	int arg = 1;
		681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		683	#else
		684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		686	#endif
		687	croak ("unable to initialize result pipe(3)");
		688
		689	respipe_osf [0] = TO_SOCKET (respipe [0]);
		690	respipe_osf [1] = TO_SOCKET (respipe [1]);
		691	}
		692
		693	X_THREAD_PROC (aio_proc);
		694
		695	static void start_thread (void)
		696	{
		697	worker *wrk = calloc (1, sizeof (worker));
		698
		699	if (!wrk)
		700	croak ("unable to allocate worker thread data");
		701
		702	X_LOCK (wrklock);
		703
		704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		705	{
		706	wrk->prev = &wrk_first;
		707	wrk->next = wrk_first.next;
		708	wrk_first.next->prev = wrk;
		709	wrk_first.next = wrk;
		710	++started;
		711	}
		712	else
		713	free (wrk);
		714
		715	X_UNLOCK (wrklock);
		716	}
		717
		718	static void maybe_start_thread ()
		719	{
		720	if (get_nthreads () >= wanted)
		721	return;
		722
		723	/* todo: maybe use idle here, but might be less exact */
		724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		725	return;
		726
		727	start_thread ();
		728	}
		729
		730	static void req_send (aio_req req)
		731	{
		732	block_sig ();
		733
		734	++nreqs;
		735
		736	X_LOCK (reqlock);
		737	++nready;
		738	reqq_push (&req_queue, req);
		739	X_COND_SIGNAL (reqwait);
		740	X_UNLOCK (reqlock);
		741
		742	unblock_sig ();
		743
		744	maybe_start_thread ();
		745	}
		746
		747	static void end_thread (void)
		748	{
		749	aio_req req;
		750
		751	Newz (0, req, 1, aio_cb);
		752
		753	req->type = REQ_QUIT;
		754	req->pri = PRI_MAX + PRI_BIAS;
		755
		756	X_LOCK (reqlock);
		757	reqq_push (&req_queue, req);
		758	X_COND_SIGNAL (reqwait);
		759	X_UNLOCK (reqlock);
		760
		761	X_LOCK (wrklock);
		762	--started;
		763	X_UNLOCK (wrklock);
		764	}
		765
		766	static void set_max_idle (int nthreads)
		767	{
		768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		769	max_idle = nthreads <= 0 ? 1 : nthreads;
		770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		771	}
		772
		773	static void min_parallel (int nthreads)
		774	{
		775	if (wanted < nthreads)
		776	wanted = nthreads;
		777	}
		778
		779	static void max_parallel (int nthreads)
		780	{
		781	if (wanted > nthreads)
		782	wanted = nthreads;
		783
		784	while (started > wanted)
		785	end_thread ();
		786	}
		787
		788	static void poll_wait ()
		789	{
		790	fd_set rfd;
		791
		792	while (nreqs)
		793	{
		794	int size;
		795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		796	size = res_queue.size;
		797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		798
		799	if (size)
		800	return;
		801
		802	maybe_start_thread ();
		803
		804	FD_ZERO (&rfd);
		805	FD_SET (respipe [0], &rfd);
		806
		807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
358	}	808	}
359	}	809	}
360		810
361	static int poll_cb ()	811	static int poll_cb ()
362	{	812	{
363	dSP;	813	dSP;
364	int count = 0;	814	int count = 0;
		815	int maxreqs = max_poll_reqs;
365	int do_croak = 0;	816	int do_croak = 0;
		817	struct timeval tv_start, tv_now;
366	aio_req req;	818	aio_req req;
		819
		820	if (max_poll_time)
		821	gettimeofday (&tv_start, 0);
		822
		823	block_sig ();
367		824
368	for (;;)	825	for (;;)
369	{	826	{
370	pthread_mutex_lock (&reslock);	827	for (;;)
371	req = ress;
372
373	if (req)
374	{	828	{
375	ress = req->next;	829	maybe_start_thread ();
376		830
		831	X_LOCK (reslock);
		832	req = reqq_shift (&res_queue);
		833
377	if (!ress)	834	if (req)
378	{	835	{
		836	--npending;
		837
		838	if (!res_queue.size)
		839	{
379	/* read any signals sent by the worker threads */	840	/* read any signals sent by the worker threads */
380	char buf [32];	841	char buf [4];
381	while (read (respipe [0], buf, 32) == 32)	842	while (respipe_read (respipe [0], buf, 4) == 4)
		843	;
382	;	844	}
		845	}
383		846
		847	X_UNLOCK (reslock);
		848
		849	if (!req)
		850	break;
		851
		852	--nreqs;
		853
		854	if (req->type == REQ_GROUP && req->size)
		855	{
		856	req->int1 = 1; /* mark request as delayed */
		857	continue;
		858	}
		859	else
		860	{
		861	if (!req_invoke (req))
		862	{
		863	req_destroy (req);
		864	unblock_sig ();
		865	croak (0);
		866	}
		867
		868	count++;
		869	}
		870
		871	req_destroy (req);
		872
		873	if (maxreqs && !--maxreqs)
		874	break;
		875
		876	if (max_poll_time)
		877	{
		878	gettimeofday (&tv_now, 0);
		879
		880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
384	rese = 0;	881	break;
385	}	882	}
386	}	883	}
387		884
388	pthread_mutex_unlock (&reslock);	885	if (nreqs <= max_outstanding)
389
390	if (!req)
391	break;	886	break;
392		887
393	--nreqs;	888	poll_wait ();
394		889
395	if (req->type == REQ_QUIT)	890	++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	}	891	}
424		892
		893	unblock_sig ();
425	return count;	894	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	}	895	}
529		896
530	/*****************************************************************************/	897	/*****************************************************************************/
531	/* work around various missing functions */	898	/* work around various missing functions */
532		899
…		…
537	/*	904	/*
538	* make our pread/pwrite safe against themselves, but not against	905	* make our pread/pwrite safe against themselves, but not against
539	* normal read/write by using a mutex. slows down execution a lot,	906	* normal read/write by using a mutex. slows down execution a lot,
540	* but that's your problem, not mine.	907	* but that's your problem, not mine.
541	*/	908	*/
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	909	static mutex_t preadwritelock = X_MUTEX_INIT;
543		910
544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
545	{	912	{
546	ssize_t res;	913	ssize_t res;
547	off_t ooffset;	914	off_t ooffset;
548		915
549	pthread_mutex_lock (&preadwritelock);	916	X_LOCK (preadwritelock);
550	ooffset = lseek (fd, 0, SEEK_CUR);	917	ooffset = lseek (fd, 0, SEEK_CUR);
551	lseek (fd, offset, SEEK_SET);	918	lseek (fd, offset, SEEK_SET);
552	res = read (fd, buf, count);	919	res = read (fd, buf, count);
553	lseek (fd, ooffset, SEEK_SET);	920	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);	921	X_UNLOCK (preadwritelock);
555		922
556	return res;	923	return res;
557	}	924	}
558		925
559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
560	{	927	{
561	ssize_t res;	928	ssize_t res;
562	off_t ooffset;	929	off_t ooffset;
563		930
564	pthread_mutex_lock (&preadwritelock);	931	X_LOCK (preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);	932	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);	933	lseek (fd, offset, SEEK_SET);
567	res = write (fd, buf, count);	934	res = write (fd, buf, count);
568	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);	936	X_UNLOCK (preadwritelock);
570		937
571	return res;	938	return res;
572	}	939	}
		940	#endif
		941
		942	#ifndef HAVE_FUTIMES
		943
		944	# define utimes(path,times) aio_utimes (path, times)
		945	# define futimes(fd,times) aio_futimes (fd, times)
		946
		947	int aio_utimes (const char *filename, const struct timeval times[2])
		948	{
		949	if (times)
		950	{
		951	struct utimbuf buf;
		952
		953	buf.actime = times[0].tv_sec;
		954	buf.modtime = times[1].tv_sec;
		955
		956	return utime (filename, &buf);
		957	}
		958	else
		959	return utime (filename, 0);
		960	}
		961
		962	int aio_futimes (int fd, const struct timeval tv[2])
		963	{
		964	errno = ENOSYS;
		965	return -1;
		966	}
		967
573	#endif	968	#endif
574		969
575	#if !HAVE_FDATASYNC	970	#if !HAVE_FDATASYNC
576	# define fdatasync fsync	971	# define fdatasync fsync
577	#endif	972	#endif
578		973
579	#if !HAVE_READAHEAD	974	#if !HAVE_READAHEAD
580	# define readahead aio_readahead	975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
581		976
582	static ssize_t readahead (int fd, off_t offset, size_t count)	977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
583	{	978	{
584	char readahead_buf[4096];	979	size_t todo = count;
		980	dBUF;
585		981
586	while (count > 0)	982	while (todo > 0)
587	{	983	{
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
589		985
590	pread (fd, readahead_buf, len, offset);	986	pread (fd, aio_buf, len, offset);
591	offset += len;	987	offset += len;
592	count -= len;	988	todo -= len;
593	}	989	}
594		990
595	errno = 0;	991	errno = 0;
		992	return count;
596	}	993	}
		994
597	#endif	995	#endif
598		996
599	#if !HAVE_READDIR_R	997	#if !HAVE_READDIR_R
600	# define readdir_r aio_readdir_r	998	# define readdir_r aio_readdir_r
601		999
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1000	static mutex_t readdirlock = X_MUTEX_INIT;
603		1001
604	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
605	{	1003	{
606	struct dirent *e;	1004	X_DIRENT *e;
607	int errorno;	1005	int errorno;
608		1006
609	pthread_mutex_lock (&readdirlock);	1007	X_LOCK (readdirlock);
610		1008
611	e = readdir (dirp);	1009	e = readdir (dirp);
612	errorno = errno;	1010	errorno = errno;
613		1011
614	if (e)	1012	if (e)
…		…
617	strcpy (ent->d_name, e->d_name);	1015	strcpy (ent->d_name, e->d_name);
618	}	1016	}
619	else	1017	else
620	*res = 0;	1018	*res = 0;
621		1019
622	pthread_mutex_unlock (&readdirlock);	1020	X_UNLOCK (readdirlock);
623		1021
624	errno = errorno;	1022	errno = errorno;
625	return e ? 0 : -1;	1023	return e ? 0 : -1;
626	}	1024	}
627	#endif	1025	#endif
628		1026
629	/* sendfile always needs emulation */	1027	/* sendfile always needs emulation */
630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
631	{	1029	{
632	ssize_t res;	1030	ssize_t res;
633		1031
634	if (!count)	1032	if (!count)
635	return 0;	1033	return 0;
…		…
646	{	1044	{
647	off_t sbytes;	1045	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649		1047
650	if (res < 0 && sbytes)	1048	if (res < 0 && sbytes)
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
652	res = sbytes;	1050	res = sbytes;
653	}	1051	}
654		1052
655	# elif __hpux	1053	# elif __hpux
656	res = sendfile (ofd, ifd, offset, count, 0, 0);	1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
684	#endif	1082	#endif
685	)	1083	)
686	)	1084	)
687	{	1085	{
688	/* emulate sendfile. this is a major pain in the ass */	1086	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];	1087	dBUF;
		1088
690	res = 0;	1089	res = 0;
691		1090
692	while (count)	1091	while (count)
693	{	1092	{
694	ssize_t cnt;	1093	ssize_t cnt;
695		1094
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
697		1096
698	if (cnt <= 0)	1097	if (cnt <= 0)
699	{	1098	{
700	if (cnt && !res) res = -1;	1099	if (cnt && !res) res = -1;
701	break;	1100	break;
702	}	1101	}
703		1102
704	cnt = write (ofd, buf, cnt);	1103	cnt = write (ofd, aio_buf, cnt);
705		1104
706	if (cnt <= 0)	1105	if (cnt <= 0)
707	{	1106	{
708	if (cnt && !res) res = -1;	1107	if (cnt && !res) res = -1;
709	break;	1108	break;
…		…
717		1116
718	return res;	1117	return res;
719	}	1118	}
720		1119
721	/* read a full directory */	1120	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)	1121	static void scandir_ (aio_req req, worker *self)
723	{	1122	{
724	DIR *dirp = opendir (path);	1123	DIR *dirp;
725	union	1124	union
726	{	1125	{
727	struct dirent d;	1126	X_DIRENT d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
729	} u;	1128	} *u;
730	struct dirent *entp;	1129	X_DIRENT *entp;
731	char *name, *names;	1130	char *name, *names;
732	int memlen = 4096;	1131	int memlen = 4096;
733	int memofs = 0;	1132	int memofs = 0;
734	int res = 0;	1133	int res = 0;
735	int errorno;
736		1134
737	if (!dirp)	1135	X_LOCK (wrklock);
738	return -1;	1136	self->dirp = dirp = opendir (req->ptr1);
739		1137	self->dbuf = u = malloc (sizeof (*u));
		1138	req->flags |= FLAG_PTR2_FREE;
740	names = malloc (memlen);	1139	req->ptr2 = names = malloc (memlen);
		1140	X_UNLOCK (wrklock);
		1141
		1142	if (dirp && u && names)
		1143	for (;;)
		1144	{
		1145	errno = 0;
		1146	readdir_r (dirp, &u->d, &entp);
		1147
		1148	if (!entp)
		1149	break;
		1150
		1151	name = entp->d_name;
		1152
		1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1154	{
		1155	int len = strlen (name) + 1;
		1156
		1157	res++;
		1158
		1159	while (memofs + len > memlen)
		1160	{
		1161	memlen *= 2;
		1162	X_LOCK (wrklock);
		1163	req->ptr2 = names = realloc (names, memlen);
		1164	X_UNLOCK (wrklock);
		1165
		1166	if (!names)
		1167	break;
		1168	}
		1169
		1170	memcpy (names + memofs, name, len);
		1171	memofs += len;
		1172	}
		1173	}
		1174
		1175	if (errno)
		1176	res = -1;
		1177
		1178	req->result = res;
		1179	}
		1180
		1181	/*****************************************************************************/
		1182
		1183	X_THREAD_PROC (aio_proc)
		1184	{
		1185	{//D
		1186	aio_req req;
		1187	struct timespec ts;
		1188	worker *self = (worker *)thr_arg;
		1189
		1190	/* try to distribute timeouts somewhat randomly */
		1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
741		1192
742	for (;;)	1193	for (;;)
743	{	1194	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);	1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
745		1196
746	if (!entp)	1197	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		1198
795	for (;;)	1199	for (;;)
796	{	1200	{
797	req = reqs;	1201	self->req = req = reqq_shift (&req_queue);
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804		1202
805	if (req)	1203	if (req)
806	break;	1204	break;
807		1205
808	pthread_cond_wait (&reqwait, &reqlock);	1206	++idle;
		1207
		1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1209	== ETIMEDOUT)
		1210	{
		1211	if (idle > max_idle)
		1212	{
		1213	--idle;
		1214	X_UNLOCK (reqlock);
		1215	X_LOCK (wrklock);
		1216	--started;
		1217	X_UNLOCK (wrklock);
		1218	goto quit;
		1219	}
		1220
		1221	/* we are allowed to idle, so do so without any timeout */
		1222	X_COND_WAIT (reqwait, reqlock);
		1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1224	}
		1225
		1226	--idle;
809	}	1227	}
810		1228
811	pthread_mutex_unlock (&reqlock);	1229	--nready;
		1230
		1231	X_UNLOCK (reqlock);
812		1232
813	errno = 0; /* strictly unnecessary */	1233	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815		1234
816	if (!(req->flags & FLAG_CANCELLED))	1235	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)	1236	switch (req->type)
818	{	1237	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1238	case REQ_READ: req->result = req->offs >= 0
820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1239	? pread (req->int1, req->ptr1, req->size, req->offs)
		1240	: read (req->int1, req->ptr1, req->size); break;
		1241	case REQ_WRITE: req->result = req->offs >= 0
		1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1243	: write (req->int1, req->ptr1, req->size); break;
821		1244
822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1245	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;	1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
824		1247
825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1248	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;	1249	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;	1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
828		1251
		1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1258
829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
830	case REQ_CLOSE: req->result = close (req->fd); break;	1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
836		1269
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;	1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1272	case REQ_READDIR: scandir_ (req, self); break;
840		1273
841	case REQ_SLEEP:	1274	case REQ_BUSY:
		1275	#ifdef _WIN32
		1276	Sleep (req->nv1 * 1000.);
		1277	#else
842	{	1278	{
843	struct timeval tv;	1279	struct timeval tv;
844		1280
845	tv.tv_sec = req->fd;	1281	tv.tv_sec = req->nv1;
846	tv.tv_usec = req->fd2;	1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
847		1283
848	req->result = select (0, 0, 0, 0, &tv);	1284	req->result = select (0, 0, 0, 0, &tv);
849	}	1285	}
		1286	#endif
		1287	break;
		1288
		1289	case REQ_UTIME:
		1290	case REQ_FUTIME:
		1291	{
		1292	struct timeval tv[2];
		1293	struct timeval *times;
		1294
		1295	if (req->nv1 != -1. || req->nv2 != -1.)
		1296	{
		1297	tv[0].tv_sec = req->nv1;
		1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1299	tv[1].tv_sec = req->nv2;
		1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1301
		1302	times = tv;
		1303	}
		1304	else
		1305	times = 0;
		1306
		1307
		1308	req->result = req->type == REQ_FUTIME
		1309	? futimes (req->int1, times)
		1310	: utimes (req->ptr1, times);
		1311	}
850		1312
851	case REQ_GROUP:	1313	case REQ_GROUP:
852	case REQ_NOP:	1314	case REQ_NOP:
		1315	break;
		1316
853	case REQ_QUIT:	1317	case REQ_QUIT:
854	break;	1318	goto quit;
855		1319
856	default:	1320	default:
857	req->result = ENOSYS;	1321	req->result = -1;
858	break;	1322	break;
859	}	1323	}
860		1324
861	req->errorno = errno;	1325	req->errorno = errno;
862		1326
863	pthread_mutex_lock (&reslock);	1327	X_LOCK (reslock);
864		1328
865	req->next = 0;	1329	++npending;
866		1330
867	if (rese)	1331	if (!reqq_push (&res_queue, req))
868	{	1332	{
869	rese->next = req;	1333	/* write a dummy byte to the pipe so fh becomes ready */
870	rese = req;	1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1335
		1336	/* optionally signal the main thread asynchronously */
		1337	if (main_sig)
		1338	pthread_kill (main_tid, main_sig);
871	}	1339	}
872	else
873	{
874	rese = ress = req;
875		1340
876	/* write a dummy byte to the pipe so fh becomes ready */	1341	self->req = 0;
877	write (respipe [1], &respipe, 1);	1342	worker_clear (self);
878	}
879		1343
880	pthread_mutex_unlock (&reslock);	1344	X_UNLOCK (reslock);
881	}	1345	}
882	while (type != REQ_QUIT);	1346
		1347	quit:
		1348	X_LOCK (wrklock);
		1349	worker_free (self);
		1350	X_UNLOCK (wrklock);
883		1351
884	return 0;	1352	return 0;
		1353	}//D
885	}	1354	}
886		1355
887	/*****************************************************************************/	1356	/*****************************************************************************/
888		1357
889	static void atfork_prepare (void)	1358	static void atfork_prepare (void)
890	{	1359	{
891	pthread_mutex_lock (&reqlock);	1360	X_LOCK (wrklock);
892	pthread_mutex_lock (&reslock);	1361	X_LOCK (reqlock);
		1362	X_LOCK (reslock);
893	#if !HAVE_PREADWRITE	1363	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);	1364	X_LOCK (preadwritelock);
895	#endif	1365	#endif
896	#if !HAVE_READDIR_R	1366	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);	1367	X_LOCK (readdirlock);
898	#endif	1368	#endif
899	}	1369	}
900		1370
901	static void atfork_parent (void)	1371	static void atfork_parent (void)
902	{	1372	{
903	#if !HAVE_READDIR_R	1373	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);	1374	X_UNLOCK (readdirlock);
905	#endif	1375	#endif
906	#if !HAVE_PREADWRITE	1376	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);	1377	X_UNLOCK (preadwritelock);
908	#endif	1378	#endif
909	pthread_mutex_unlock (&reslock);	1379	X_UNLOCK (reslock);
910	pthread_mutex_unlock (&reqlock);	1380	X_UNLOCK (reqlock);
		1381	X_UNLOCK (wrklock);
911	}	1382	}
912		1383
913	static void atfork_child (void)	1384	static void atfork_child (void)
914	{	1385	{
915	aio_req prv;	1386	aio_req prv;
916		1387
917	started = 0;	1388	while (prv = reqq_shift (&req_queue))
		1389	req_destroy (prv);
918		1390
919	while (reqs)	1391	while (prv = reqq_shift (&res_queue))
		1392	req_destroy (prv);
		1393
		1394	while (wrk_first.next != &wrk_first)
920	{	1395	{
921	prv = reqs;	1396	worker *wrk = wrk_first.next;
922	reqs = prv->next;	1397
		1398	if (wrk->req)
		1399	req_destroy (wrk->req);
		1400
		1401	worker_clear (wrk);
923	req_free (prv);	1402	worker_free (wrk);
924	}	1403	}
925		1404
926	reqs = reqe = 0;	1405	started = 0;
927		1406	idle = 0;
928	while (ress)	1407	nreqs = 0;
929	{	1408	nready = 0;
930	prv = ress;	1409	npending = 0;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936		1410
937	close (respipe [0]);
938	close (respipe [1]);
939	create_pipe ();	1411	create_respipe ();
940		1412
941	atfork_parent ();	1413	atfork_parent ();
942	}	1414	}
943		1415
944	#define dREQ \	1416	#define dREQ \
…		…
966		1438
967	PROTOTYPES: ENABLE	1439	PROTOTYPES: ENABLE
968		1440
969	BOOT:	1441	BOOT:
970	{	1442	{
971	HV *stash = gv_stashpv ("IO::AIO", 1);	1443	stash = gv_stashpv ("IO::AIO", 1);
		1444
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1450	#ifdef _WIN32
		1451	X_MUTEX_CHECK (wrklock);
		1452	X_MUTEX_CHECK (reslock);
		1453	X_MUTEX_CHECK (reqlock);
		1454	X_MUTEX_CHECK (reqwait);
		1455	X_MUTEX_CHECK (preadwritelock);
		1456	X_MUTEX_CHECK (readdirlock);
975		1457
976	create_pipe ();	1458	X_COND_CHECK (reqwait);
		1459	#else
		1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1462	#endif
		1463
		1464	create_respipe ();
		1465
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
978	}	1467	}
979		1468
980	void	1469	void
981	min_parallel (nthreads)	1470	max_poll_reqs (int nreqs)
982	int nthreads
983	PROTOTYPE: $	1471	PROTOTYPE: $
		1472	CODE:
		1473	max_poll_reqs = nreqs;
984		1474
985	void	1475	void
986	max_parallel (nthreads)	1476	max_poll_time (double nseconds)
987	int nthreads
988	PROTOTYPE: $	1477	PROTOTYPE: $
		1478	CODE:
		1479	max_poll_time = nseconds * AIO_TICKS;
		1480
		1481	void
		1482	min_parallel (int nthreads)
		1483	PROTOTYPE: $
		1484
		1485	void
		1486	max_parallel (int nthreads)
		1487	PROTOTYPE: $
		1488
		1489	void
		1490	max_idle (int nthreads)
		1491	PROTOTYPE: $
		1492	CODE:
		1493	set_max_idle (nthreads);
989		1494
990	int	1495	int
991	max_outstanding (nreqs)	1496	max_outstanding (int maxreqs)
992	int nreqs	1497	PROTOTYPE: $
993	PROTOTYPE: $
994	CODE:	1498	CODE:
995	RETVAL = max_outstanding;	1499	RETVAL = max_outstanding;
996	max_outstanding = nreqs;	1500	max_outstanding = maxreqs;
		1501	OUTPUT:
		1502	RETVAL
997		1503
998	void	1504	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1505	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: $$$;$	1506	PROTOTYPE: $$$;$
1005	PPCODE:	1507	PPCODE:
1006	{	1508	{
1007	dREQ;	1509	dREQ;
1008		1510
1009	req->type = REQ_OPEN;	1511	req->type = REQ_OPEN;
1010	req->data = newSVsv (pathname);	1512	req->sv1 = newSVsv (pathname);
1011	req->dataptr = SvPVbyte_nolen (req->data);	1513	req->ptr1 = SvPVbyte_nolen (req->sv1);
1012	req->fd = flags;	1514	req->int1 = flags;
1013	req->mode = mode;	1515	req->mode = mode;
1014		1516
1015	REQ_SEND;	1517	REQ_SEND;
1016	}	1518	}
1017		1519
1018	void	1520	void
1019	aio_close (fh,callback=&PL_sv_undef)	1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$	1522	PROTOTYPE: $;$
1023	ALIAS:	1523	ALIAS:
1024	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC	1524	aio_fsync = REQ_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC	1525	aio_fdatasync = REQ_FDATASYNC
1027	PPCODE:	1526	PPCODE:
1028	{	1527	{
1029	dREQ;	1528	dREQ;
1030		1529
1031	req->type = ix;	1530	req->type = ix;
1032	req->fh = newSVsv (fh);	1531	req->sv1 = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1034		1533
1035	REQ_SEND (req);	1534	REQ_SEND (req);
1036	}	1535	}
1037		1536
1038	void	1537	void
		1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1539	PROTOTYPE: $;$
		1540	PPCODE:
		1541	{
		1542	PerlIO *io = IoIFP (sv_2io (fh));
		1543	int fd = PerlIO_fileno (io);
		1544
		1545	if (fd < 0)
		1546	croak ("aio_close called with fd-less filehandle");
		1547
		1548	PerlIO_binmode (io, 0, 0, 0);
		1549
		1550	{
		1551	dREQ;
		1552
		1553	req->type = REQ_CLOSE;
		1554	req->sv1 = newSVsv (fh);
		1555	req->ptr1 = (void *)io;
		1556
		1557	REQ_SEND (req);
		1558	}
		1559	}
		1560
		1561	void
1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1562	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:	1563	ALIAS:
1047	aio_read = REQ_READ	1564	aio_read = REQ_READ
1048	aio_write = REQ_WRITE	1565	aio_write = REQ_WRITE
1049	PROTOTYPE: $$$$$;$	1566	PROTOTYPE: $$$$$;$
1050	PPCODE:	1567	PPCODE:
1051	{	1568	{
1052	aio_req req;
1053	STRLEN svlen;	1569	STRLEN svlen;
1054	char *svptr = SvPVbyte (data, svlen);	1570	char *svptr = SvPVbyte (data, svlen);
		1571	UV len = SvUV (length);
1055		1572
1056	SvUPGRADE (data, SVt_PV);	1573	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);	1574	SvPOK_on (data);
1058		1575
1059	if (dataoffset < 0)	1576	if (dataoffset < 0)
1060	dataoffset += svlen;	1577	dataoffset += svlen;
1061		1578
1062	if (dataoffset < 0 || dataoffset > svlen)	1579	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	1580	croak ("dataoffset outside of data scalar");
1064		1581
1065	if (ix == REQ_WRITE)	1582	if (ix == REQ_WRITE)
1066	{	1583	{
1067	/* write: check length and adjust. */	1584	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	1585	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	1586	len = svlen - dataoffset;
1070	}	1587	}
1071	else	1588	else
1072	{	1589	{
1073	/* read: grow scalar as necessary */	1590	/* read: grow scalar as necessary */
1074	svptr = SvGROW (data, length + dataoffset);	1591	svptr = SvGROW (data, len + dataoffset + 1);
1075	}	1592	}
1076		1593
1077	if (length < 0)	1594	if (len < 0)
1078	croak ("length must not be negative");	1595	croak ("length must not be negative");
1079		1596
1080	{	1597	{
1081	dREQ;	1598	dREQ;
1082		1599
1083	req->type = ix;	1600	req->type = ix;
1084	req->fh = newSVsv (fh);	1601	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1086	: IoOFP (sv_2io (fh)));	1603	: IoOFP (sv_2io (fh)));
		1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	1605	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	1606	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	1607	req->ptr1 = (char *)svptr + dataoffset;
		1608	req->stroffset = dataoffset;
1091		1609
1092	if (!SvREADONLY (data))	1610	if (!SvREADONLY (data))
1093	{	1611	{
1094	SvREADONLY_on (data);	1612	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	1613	req->flags |= FLAG_SV2_RO_OFF;
1096	}	1614	}
1097		1615
1098	REQ_SEND;	1616	REQ_SEND;
1099	}	1617	}
1100	}	1618	}
1101		1619
1102	void	1620	void
		1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1622	PROTOTYPE: $$;$
		1623	PPCODE:
		1624	{
		1625	SV *data;
		1626	dREQ;
		1627
		1628	data = newSV (NAME_MAX);
		1629	SvPOK_on (data);
		1630
		1631	req->type = REQ_READLINK;
		1632	req->sv1 = newSVsv (path);
		1633	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1634	req->sv2 = data;
		1635	req->ptr1 = SvPVbyte_nolen (data);
		1636
		1637	REQ_SEND;
		1638	}
		1639
		1640	void
1103	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1641	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: $$$$;$	1642	PROTOTYPE: $$$$;$
1110	PPCODE:	1643	PPCODE:
1111	{	1644	{
1112	dREQ;	1645	dREQ;
1113		1646
1114	req->type = REQ_SENDFILE;	1647	req->type = REQ_SENDFILE;
1115	req->fh = newSVsv (out_fh);	1648	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1117	req->fh2 = newSVsv (in_fh);	1650	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1119	req->offset = in_offset;	1652	req->offs = SvVAL64 (in_offset);
1120	req->length = length;	1653	req->size = length;
1121		1654
1122	REQ_SEND;	1655	REQ_SEND;
1123	}	1656	}
1124		1657
1125	void	1658	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$	1660	PROTOTYPE: $$$;$
1132	PPCODE:	1661	PPCODE:
1133	{	1662	{
1134	dREQ;	1663	dREQ;
1135		1664
1136	req->type = REQ_READAHEAD;	1665	req->type = REQ_READAHEAD;
1137	req->fh = newSVsv (fh);	1666	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1139	req->offset = offset;	1668	req->offs = SvVAL64 (offset);
1140	req->length = length;	1669	req->size = length;
1141		1670
1142	REQ_SEND;	1671	REQ_SEND;
1143	}	1672	}
1144		1673
1145	void	1674	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	1676	ALIAS:
1150	aio_stat = REQ_STAT	1677	aio_stat = REQ_STAT
1151	aio_lstat = REQ_LSTAT	1678	aio_lstat = REQ_LSTAT
1152	PPCODE:	1679	PPCODE:
1153	{	1680	{
1154	dREQ;	1681	dREQ;
1155		1682
1156	New (0, req->statdata, 1, Stat_t);	1683	req->ptr2 = malloc (sizeof (Stat_t));
1157	if (!req->statdata)	1684	if (!req->ptr2)
1158	{	1685	{
1159	req_free (req);	1686	req_destroy (req);
1160	croak ("out of memory during aio_req->statdata allocation");	1687	croak ("out of memory during aio_stat statdata allocation");
1161	}	1688	}
		1689
		1690	req->flags |= FLAG_PTR2_FREE;
		1691	req->sv1 = newSVsv (fh_or_path);
1162		1692
1163	if (SvPOK (fh_or_path))	1693	if (SvPOK (fh_or_path))
1164	{	1694	{
1165	req->type = ix;	1695	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);	1696	req->ptr1 = SvPVbyte_nolen (req->sv1);
1168	}	1697	}
1169	else	1698	else
1170	{	1699	{
1171	req->type = REQ_FSTAT;	1700	req->type = REQ_FSTAT;
1172	req->fh = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1174	}	1702	}
1175		1703
1176	REQ_SEND;	1704	REQ_SEND;
1177	}	1705	}
1178		1706
1179	void	1707	void
		1708	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1715	req->sv1 = newSVsv (fh_or_path);
		1716
		1717	if (SvPOK (fh_or_path))
		1718	{
		1719	req->type = REQ_UTIME;
		1720	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1721	}
		1722	else
		1723	{
		1724	req->type = REQ_FUTIME;
		1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1726	}
		1727
		1728	REQ_SEND;
		1729	}
		1730
		1731	void
		1732	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1733	PPCODE:
		1734	{
		1735	dREQ;
		1736
		1737	req->sv1 = newSVsv (fh_or_path);
		1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1739
		1740	if (SvPOK (fh_or_path))
		1741	{
		1742	req->type = REQ_TRUNCATE;
		1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1744	}
		1745	else
		1746	{
		1747	req->type = REQ_FTRUNCATE;
		1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1749	}
		1750
		1751	REQ_SEND;
		1752	}
		1753
		1754	void
		1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1756	PPCODE:
		1757	{
		1758	dREQ;
		1759
		1760	req->mode = mode;
		1761	req->sv1 = newSVsv (fh_or_path);
		1762
		1763	if (SvPOK (fh_or_path))
		1764	{
		1765	req->type = REQ_CHMOD;
		1766	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1767	}
		1768	else
		1769	{
		1770	req->type = REQ_FCHMOD;
		1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1772	}
		1773
		1774	REQ_SEND;
		1775	}
		1776
		1777	void
		1778	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1779	PPCODE:
		1780	{
		1781	dREQ;
		1782
		1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1785	req->sv1 = newSVsv (fh_or_path);
		1786
		1787	if (SvPOK (fh_or_path))
		1788	{
		1789	req->type = REQ_CHOWN;
		1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1791	}
		1792	else
		1793	{
		1794	req->type = REQ_FCHOWN;
		1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1796	}
		1797
		1798	REQ_SEND;
		1799	}
		1800
		1801	void
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1803	ALIAS:
1184	aio_unlink = REQ_UNLINK	1804	aio_unlink = REQ_UNLINK
1185	aio_rmdir = REQ_RMDIR	1805	aio_rmdir = REQ_RMDIR
1186	aio_readdir = REQ_READDIR	1806	aio_readdir = REQ_READDIR
1187	PPCODE:	1807	PPCODE:
1188	{	1808	{
1189	dREQ;	1809	dREQ;
1190		1810
1191	req->type = ix;	1811	req->type = ix;
1192	req->data = newSVsv (pathname);	1812	req->sv1 = newSVsv (pathname);
1193	req->dataptr = SvPVbyte_nolen (req->data);	1813	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1814
		1815	REQ_SEND;
		1816	}
		1817
		1818	void
		1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1820	PPCODE:
		1821	{
		1822	dREQ;
1194		1823
		1824	req->type = REQ_MKDIR;
		1825	req->sv1 = newSVsv (pathname);
		1826	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1827	req->mode = mode;
		1828
1195	REQ_SEND;	1829	REQ_SEND;
1196	}	1830	}
1197		1831
1198	void	1832	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:	1834	ALIAS:
1204	aio_link = REQ_LINK	1835	aio_link = REQ_LINK
1205	aio_symlink = REQ_SYMLINK	1836	aio_symlink = REQ_SYMLINK
1206	aio_rename = REQ_RENAME	1837	aio_rename = REQ_RENAME
1207	PPCODE:	1838	PPCODE:
1208	{	1839	{
1209	dREQ;	1840	dREQ;
1210		1841
1211	req->type = ix;	1842	req->type = ix;
1212	req->fh = newSVsv (oldpath);	1843	req->sv2 = newSVsv (oldpath);
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1844	req->ptr2 = SvPVbyte_nolen (req->sv2);
1214	req->data = newSVsv (newpath);	1845	req->sv1 = newSVsv (newpath);
1215	req->dataptr = SvPVbyte_nolen (req->data);	1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1216		1847
1217	REQ_SEND;	1848	REQ_SEND;
1218	}	1849	}
1219		1850
1220	void	1851	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1853	PPCODE:
1225	{	1854	{
1226	dREQ;	1855	dREQ;
1227		1856
1228	req->type = REQ_SLEEP;	1857	req->type = REQ_MKNOD;
1229	req->fd = delay < 0. ? 0 : delay;	1858	req->sv1 = newSVsv (pathname);
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1859	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1860	req->mode = (mode_t)mode;
		1861	req->offs = dev;
		1862
1232	REQ_SEND;	1863	REQ_SEND;
1233	}	1864	}
1234		1865
1235	void	1866	void
		1867	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1868	PPCODE:
		1869	{
		1870	dREQ;
		1871
		1872	req->type = REQ_BUSY;
		1873	req->nv1 = delay < 0. ? 0. : delay;
		1874
		1875	REQ_SEND;
		1876	}
		1877
		1878	void
1236	aio_group (callback=&PL_sv_undef)	1879	aio_group (SV *callback=&PL_sv_undef)
1237	SV * callback
1238	PROTOTYPE: ;$	1880	PROTOTYPE: ;$
1239	PPCODE:	1881	PPCODE:
1240	{	1882	{
1241	dREQ;	1883	dREQ;
1242		1884
1243	req->type = REQ_GROUP;	1885	req->type = REQ_GROUP;
		1886
1244	req_send (req);	1887	req_send (req);
1245
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1247	}	1889	}
1248		1890
1249	void	1891	void
1250	aio_nop (callback=&PL_sv_undef)	1892	aio_nop (SV *callback=&PL_sv_undef)
1251	SV * callback
1252	PPCODE:	1893	PPCODE:
1253	{	1894	{
1254	dREQ;	1895	dREQ;
1255		1896
1256	req->type = REQ_NOP;	1897	req->type = REQ_NOP;
1257		1898
1258	REQ_SEND;	1899	REQ_SEND;
1259	}	1900	}
1260		1901
1261	#if 0	1902	int
1262		1903	aioreq_pri (int pri = 0)
1263	void	1904	PROTOTYPE: ;$
1264	aio_pri (int pri = DEFAULT_PRI)
1265	CODE:	1905	CODE:
		1906	RETVAL = next_pri - PRI_BIAS;
		1907	if (items > 0)
		1908	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1909	if (pri < PRI_MIN) pri = PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1910	if (pri > PRI_MAX) pri = PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1911	next_pri = pri + PRI_BIAS;
		1912	}
		1913	OUTPUT:
		1914	RETVAL
1269		1915
1270	#endif	1916	void
		1917	aioreq_nice (int nice = 0)
		1918	CODE:
		1919	nice = next_pri - nice;
		1920	if (nice < PRI_MIN) nice = PRI_MIN;
		1921	if (nice > PRI_MAX) nice = PRI_MAX;
		1922	next_pri = nice + PRI_BIAS;
1271		1923
1272	void	1924	void
1273	flush ()	1925	flush ()
1274	PROTOTYPE:	1926	PROTOTYPE:
1275	CODE:	1927	CODE:
…		…
1277	{	1929	{
1278	poll_wait ();	1930	poll_wait ();
1279	poll_cb ();	1931	poll_cb ();
1280	}	1932	}
1281		1933
1282	void	1934	int
1283	poll()	1935	poll()
1284	PROTOTYPE:	1936	PROTOTYPE:
1285	CODE:	1937	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();	1938	poll_wait ();
1289	poll_cb ();	1939	RETVAL = poll_cb ();
1290	}	1940	OUTPUT:
		1941	RETVAL
1291		1942
1292	int	1943	int
1293	poll_fileno()	1944	poll_fileno()
1294	PROTOTYPE:	1945	PROTOTYPE:
1295	CODE:	1946	CODE:
…		…
1307		1958
1308	void	1959	void
1309	poll_wait()	1960	poll_wait()
1310	PROTOTYPE:	1961	PROTOTYPE:
1311	CODE:	1962	CODE:
1312	if (nreqs)
1313	poll_wait ();	1963	poll_wait ();
		1964
		1965	void
		1966	setsig (int signum = SIGIO)
		1967	PROTOTYPE: ;$
		1968	CODE:
		1969	{
		1970	if (block_sig_level)
		1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1972
		1973	X_LOCK (reslock);
		1974	main_tid = pthread_self ();
		1975	main_sig = signum;
		1976	X_UNLOCK (reslock);
		1977
		1978	if (main_sig && npending)
		1979	pthread_kill (main_tid, main_sig);
		1980	}
		1981
		1982	void
		1983	aio_block (SV *cb)
		1984	PROTOTYPE: &
		1985	PPCODE:
		1986	{
		1987	int count;
		1988
		1989	block_sig ();
		1990	PUSHMARK (SP);
		1991	PUTBACK;
		1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1993	SPAGAIN;
		1994	unblock_sig ();
		1995
		1996	if (SvTRUE (ERRSV))
		1997	croak (0);
		1998
		1999	XSRETURN (count);
		2000	}
1314		2001
1315	int	2002	int
1316	nreqs()	2003	nreqs()
1317	PROTOTYPE:	2004	PROTOTYPE:
1318	CODE:	2005	CODE:
1319	RETVAL = nreqs;	2006	RETVAL = nreqs;
1320	OUTPUT:	2007	OUTPUT:
1321	RETVAL	2008	RETVAL
1322		2009
		2010	int
		2011	nready()
		2012	PROTOTYPE:
		2013	CODE:
		2014	RETVAL = get_nready ();
		2015	OUTPUT:
		2016	RETVAL
		2017
		2018	int
		2019	npending()
		2020	PROTOTYPE:
		2021	CODE:
		2022	RETVAL = get_npending ();
		2023	OUTPUT:
		2024	RETVAL
		2025
		2026	int
		2027	nthreads()
		2028	PROTOTYPE:
		2029	CODE:
		2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2031	RETVAL = started;
		2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2033	OUTPUT:
		2034	RETVAL
		2035
1323	PROTOTYPES: DISABLE	2036	PROTOTYPES: DISABLE
1324		2037
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		2039
1327	void	2040	void
1328	cancel (aio_req_ornot req)	2041	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	2042	CODE:
1331	req_cancel (req);	2043	req_cancel (req);
1332		2044
1333	void	2045	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1343	PPCODE:	2055	PPCODE:
1344	{	2056	{
1345	int i;	2057	int i;
1346	aio_req req;	2058	aio_req req;
1347		2059
		2060	if (main_sig && !block_sig_level)
		2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2062
1348	if (grp->fd == 2)	2063	if (grp->int1 == 2)
1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1350		2065
1351	for (i = 1; i < items; ++i )	2066	for (i = 1; i < items; ++i )
1352	{	2067	{
1353	if (GIMME_V != G_VOID)	2068	if (GIMME_V != G_VOID)
…		…
1355		2070
1356	req = SvAIO_REQ (ST (i));	2071	req = SvAIO_REQ (ST (i));
1357		2072
1358	if (req)	2073	if (req)
1359	{	2074	{
1360	++grp->length;	2075	++grp->size;
1361	req->grp = grp;	2076	req->grp = grp;
1362		2077
1363	req->grp_prev = 0;	2078	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;	2079	req->grp_next = grp->grp_first;
1365		2080
…		…
1370	}	2085	}
1371	}	2086	}
1372	}	2087	}
1373		2088
1374	void	2089	void
		2090	cancel_subs (aio_req_ornot req)
		2091	CODE:
		2092	req_cancel_subs (req);
		2093
		2094	void
1375	result (aio_req grp, ...)	2095	result (aio_req grp, ...)
1376	CODE:	2096	CODE:
1377	{	2097	{
1378	int i;	2098	int i;
		2099	AV *av;
		2100
		2101	grp->errorno = errno;
		2102
1379	AV *av = newAV ();	2103	av = newAV ();
1380		2104
1381	for (i = 1; i < items; ++i )	2105	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	2106	av_push (av, newSVsv (ST (i)));
1383		2107
1384	SvREFCNT_dec (grp->data);	2108	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	2109	grp->sv1 = (SV *)av;
1386	}	2110	}
1387		2111
1388	void	2112	void
		2113	errno (aio_req grp, int errorno = errno)
		2114	CODE:
		2115	grp->errorno = errorno;
		2116
		2117	void
1389	feed_limit (aio_req grp, int limit)	2118	limit (aio_req grp, int limit)
1390	CODE:	2119	CODE:
1391	grp->fd2 = limit;	2120	grp->int2 = limit;
1392	aio_grp_feed (grp);	2121	aio_grp_feed (grp);
1393		2122
1394	void	2123	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	2124	feed (aio_req grp, SV *callback=&PL_sv_undef)
1396	CODE:	2125	CODE:
1397	{	2126	{
1398	SvREFCNT_dec (grp->fh2);	2127	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	2128	grp->sv2 = newSVsv (callback);
1400		2129
1401	if (grp->fd2 <= 0)	2130	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	2131	grp->int2 = 2;
1403		2132
1404	aio_grp_feed (grp);	2133	aio_grp_feed (grp);
1405	}	2134	}
1406		2135

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