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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.61 by root, Mon Oct 23 22:44:21 2006 UTC vs.
Revision 1.113 by root, Wed Apr 16 16:45:18 2008 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_SYNC, 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 (void)
		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 (void)
		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 (void)
		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 (void)
		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 (void)
		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 (void);
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	while (nreqs)	464	dSP;
		465
		466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
		468
		469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
197	{	470	{
198	aio_req req;	471	ENTER;
199	pthread_mutex_lock (&reslock);	472	SAVETMPS;
200	req = ress;	473	PUSHMARK (SP);
201	pthread_mutex_unlock (&reslock);	474	EXTEND (SP, 1);
202		475
203	if (req)	476	switch (req->type)
204	return;	477	{
		478	case REQ_READDIR:
		479	{
		480	SV *rv = &PL_sv_undef;
205		481
206	fd_set rfd;	482	if (req->result >= 0)
207	FD_ZERO(&rfd);	483	{
208	FD_SET(respipe [0], &rfd);	484	int i;
		485	char *buf = req->ptr2;
		486	AV *av = newAV ();
209		487
210	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 = (SV *)gv;
		530	}
		531
		532	PUSHs (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 | G_DISCARD);
		587	SPAGAIN;
		588
		589	FREETMPS;
		590	LEAVE;
		591
		592	PUTBACK;
211	}	593	}
212	}
213		594
214	static void req_invoke (aio_req req)
215	{
216	dSP;
217	int errorno = errno;
218
219	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220	return;
221
222	errno = req->errorno;
223
224	ENTER;
225	SAVETMPS;
226	PUSHMARK (SP);
227	EXTEND (SP, 1);
228
229	switch (req->type)
230	{
231	case REQ_READDIR:
232	{
233	SV *rv = &PL_sv_undef;
234
235	if (req->result >= 0)
236	{
237	char *buf = req->data2ptr;
238	AV *av = newAV ();
239
240	while (req->result)
241	{
242	SV *sv = newSVpv (buf, 0);
243
244	av_push (av, sv);
245	buf += SvCUR (sv) + 1;
246	req->result--;
247	}
248
249	rv = sv_2mortal (newRV_noinc ((SV *)av));
250	}
251
252	PUSHs (rv);
253	}
254	break;
255
256	case REQ_OPEN:
257	{
258	/* convert fd to fh */
259	SV *fh;
260
261	PUSHs (sv_2mortal (newSViv (req->result)));
262	PUTBACK;
263	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264	SPAGAIN;
265
266	fh = SvREFCNT_inc (POPs);
267
268	PUSHMARK (SP);
269	XPUSHs (sv_2mortal (fh));
270	}
271	break;
272
273	case REQ_GROUP:
274	req->fd = 2; /* mark group as finished */
275
276	if (req->data)
277	{
278	int i;
279	AV *av = (AV *)req->data;
280
281	EXTEND (SP, AvFILL (av) + 1);
282	for (i = 0; i <= AvFILL (av); ++i)
283	PUSHs (*av_fetch (av, i, 0));
284	}
285	break;
286
287	case REQ_NOP:
288	case REQ_SLEEP:
289	break;
290
291	default:
292	PUSHs (sv_2mortal (newSViv (req->result)));
293	break;
294	}
295
296
297	PUTBACK;
298	call_sv (req->callback, G_VOID | G_EVAL);
299	SPAGAIN;
300
301	FREETMPS;
302	LEAVE;
303
304	errno = errorno;
305
306	if (SvTRUE (ERRSV))
307	{
308	req_free (req);
309	croak (0);
310	}
311	}
312
313	static void req_free (aio_req req)
314	{
315	if (req->grp)	595	if (req->grp)
316	{	596	{
317	aio_req grp = req->grp;	597	aio_req grp = req->grp;
318		598
319	/* unlink request */	599	/* unlink request */
…		…
324	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
325		605
326	aio_grp_dec (grp);	606	aio_grp_dec (grp);
327	}	607	}
328		608
		609	return !SvTRUE (ERRSV);
		610	}
		611
		612	static void req_destroy (aio_req req)
		613	{
329	if (req->self)	614	if (req->self)
330	{	615	{
331	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
332	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
333	}	618	}
334		619
335	SvREFCNT_dec (req->data);
336	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
337	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
338	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
339	Safefree (req->statdata);
340		623
341	if (req->type == REQ_READDIR && req->result >= 0)	624	if (req->flags & FLAG_PTR2_FREE)
342	free (req->data2ptr);	625	free (req->ptr2);
343		626
344	Safefree (req);	627	Safefree (req);
345	}	628	}
346		629
		630	static void req_cancel_subs (aio_req grp)
		631	{
		632	aio_req sub;
		633
		634	if (grp->type != REQ_GROUP)
		635	return;
		636
		637	SvREFCNT_dec (grp->sv2);
		638	grp->sv2 = 0;
		639
		640	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		641	req_cancel (sub);
		642	}
		643
347	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
348	{	645	{
349	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
350		647
351	if (req->type == REQ_GROUP)	648	req_cancel_subs (req);
		649	}
		650
		651	#ifdef USE_SOCKETS_AS_HANDLES
		652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		653	#else
		654	# define TO_SOCKET(x) (x)
		655	#endif
		656
		657	static void
		658	create_respipe (void)
		659	{
		660	int old_readfd = respipe [0];
		661
		662	if (respipe [1] >= 0)
		663	respipe_close (TO_SOCKET (respipe [1]));
		664
		665	#ifdef _WIN32
		666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		667	#else
		668	if (pipe (respipe))
		669	#endif
		670	croak ("unable to initialize result pipe");
		671
		672	if (old_readfd >= 0)
352	{	673	{
353	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
354		676
355	for (sub = req->grp_first; sub; sub = sub->grp_next)	677	respipe_close (respipe [0]);
356	req_cancel (sub);	678	respipe [0] = old_readfd;
357	}	679	}
358	}
359		680
		681	#ifdef _WIN32
		682	int arg = 1;
		683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		685	#else
		686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		688	#endif
		689	croak ("unable to initialize result pipe(3)");
		690
		691	respipe_osf [0] = TO_SOCKET (respipe [0]);
		692	respipe_osf [1] = TO_SOCKET (respipe [1]);
		693	}
		694
		695	X_THREAD_PROC (aio_proc);
		696
		697	static void start_thread (void)
		698	{
		699	worker *wrk = calloc (1, sizeof (worker));
		700
		701	if (!wrk)
		702	croak ("unable to allocate worker thread data");
		703
		704	X_LOCK (wrklock);
		705
		706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
		707	{
		708	wrk->prev = &wrk_first;
		709	wrk->next = wrk_first.next;
		710	wrk_first.next->prev = wrk;
		711	wrk_first.next = wrk;
		712	++started;
		713	}
		714	else
		715	free (wrk);
		716
		717	X_UNLOCK (wrklock);
		718	}
		719
		720	static void maybe_start_thread (void)
		721	{
		722	if (get_nthreads () >= wanted)
		723	return;
		724
		725	/* todo: maybe use idle here, but might be less exact */
		726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		727	return;
		728
		729	start_thread ();
		730	}
		731
		732	static void req_send (aio_req req)
		733	{
		734	block_sig ();
		735
		736	++nreqs;
		737
		738	X_LOCK (reqlock);
		739	++nready;
		740	reqq_push (&req_queue, req);
		741	X_COND_SIGNAL (reqwait);
		742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
		745
		746	maybe_start_thread ();
		747	}
		748
		749	static void end_thread (void)
		750	{
		751	aio_req req;
		752
		753	Newz (0, req, 1, aio_cb);
		754
		755	req->type = REQ_QUIT;
		756	req->pri = PRI_MAX + PRI_BIAS;
		757
		758	X_LOCK (reqlock);
		759	reqq_push (&req_queue, req);
		760	X_COND_SIGNAL (reqwait);
		761	X_UNLOCK (reqlock);
		762
		763	X_LOCK (wrklock);
		764	--started;
		765	X_UNLOCK (wrklock);
		766	}
		767
		768	static void set_max_idle (int nthreads)
		769	{
		770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		771	max_idle = nthreads <= 0 ? 1 : nthreads;
		772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		773	}
		774
		775	static void min_parallel (int nthreads)
		776	{
		777	if (wanted < nthreads)
		778	wanted = nthreads;
		779	}
		780
		781	static void max_parallel (int nthreads)
		782	{
		783	if (wanted > nthreads)
		784	wanted = nthreads;
		785
		786	while (started > wanted)
		787	end_thread ();
		788	}
		789
		790	static void poll_wait (void)
		791	{
		792	fd_set rfd;
		793
		794	while (nreqs)
		795	{
		796	int size;
		797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		798	size = res_queue.size;
		799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		800
		801	if (size)
		802	return;
		803
		804	maybe_start_thread ();
		805
		806	FD_ZERO (&rfd);
		807	FD_SET (respipe [0], &rfd);
		808
		809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		810	}
		811	}
		812
360	static int poll_cb ()	813	static int poll_cb (void)
361	{	814	{
362	dSP;	815	dSP;
363	int count = 0;	816	int count = 0;
		817	int maxreqs = max_poll_reqs;
364	int do_croak = 0;	818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
365	aio_req req;	820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
366		826
367	for (;;)	827	for (;;)
368	{	828	{
369	pthread_mutex_lock (&reslock);	829	for (;;)
370	req = ress;
371
372	if (req)
373	{	830	{
374	ress = req->next;	831	maybe_start_thread ();
375		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
376	if (!ress)	836	if (req)
377	{	837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
378	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
379	char buf [32];	843	char buf [4];
380	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
381	;	846	}
		847	}
382		848
		849	X_UNLOCK (reslock);
		850
		851	if (!req)
		852	break;
		853
		854	--nreqs;
		855
		856	if (req->type == REQ_GROUP && req->size)
		857	{
		858	req->int1 = 1; /* mark request as delayed */
		859	continue;
		860	}
		861	else
		862	{
		863	if (!req_invoke (req))
		864	{
		865	req_destroy (req);
		866	unblock_sig ();
		867	croak (0);
		868	}
		869
		870	count++;
		871	}
		872
		873	req_destroy (req);
		874
		875	if (maxreqs && !--maxreqs)
		876	break;
		877
		878	if (max_poll_time)
		879	{
		880	gettimeofday (&tv_now, 0);
		881
		882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
383	rese = 0;	883	break;
384	}	884	}
385	}	885	}
386		886
387	pthread_mutex_unlock (&reslock);	887	if (nreqs <= max_outstanding)
388
389	if (!req)
390	break;	888	break;
391		889
392	--nreqs;	890	poll_wait ();
393		891
394	if (req->type == REQ_QUIT)	892	++maxreqs;
395	started--;
396	else if (req->type == REQ_GROUP && req->length)
397	{
398	req->fd = 1; /* mark request as delayed */
399	continue;
400	}
401	else
402	{
403	if (req->type == REQ_READ)
404	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407	SvREADONLY_off (req->data);
408
409	if (req->statdata)
410	{
411	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412	PL_laststatval = req->result;
413	PL_statcache = *(req->statdata);
414	}
415
416	req_invoke (req);
417
418	count++;
419	}
420
421	req_free (req);
422	}	893	}
423		894
		895	unblock_sig ();
424	return count;	896	return count;
425	}
426
427	static void *aio_proc(void *arg);
428
429	static void start_thread (void)
430	{
431	sigset_t fullsigset, oldsigset;
432	pthread_t tid;
433	pthread_attr_t attr;
434
435	pthread_attr_init (&attr);
436	pthread_attr_setstacksize (&attr, STACKSIZE);
437	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
438
439	sigfillset (&fullsigset);
440	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
441
442	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
443	started++;
444
445	sigprocmask (SIG_SETMASK, &oldsigset, 0);
446	}
447
448	static void req_send (aio_req req)
449	{
450	while (started < wanted && nreqs >= started)
451	start_thread ();
452
453	++nreqs;
454
455	pthread_mutex_lock (&reqlock);
456
457	req->next = 0;
458
459	if (reqe)
460	{
461	reqe->next = req;
462	reqe = req;
463	}
464	else
465	reqe = reqs = req;
466
467	pthread_cond_signal (&reqwait);
468	pthread_mutex_unlock (&reqlock);
469
470	if (nreqs > max_outstanding)
471	for (;;)
472	{
473	poll_cb ();
474
475	if (nreqs <= max_outstanding)
476	break;
477
478	poll_wait ();
479	}
480	}
481
482	static void end_thread (void)
483	{
484	aio_req req;
485	Newz (0, req, 1, aio_cb);
486	req->type = REQ_QUIT;
487
488	req_send (req);
489	}
490
491	static void min_parallel (int nthreads)
492	{
493	if (wanted < nthreads)
494	wanted = nthreads;
495	}
496
497	static void max_parallel (int nthreads)
498	{
499	int cur = started;
500
501	if (wanted > nthreads)
502	wanted = nthreads;
503
504	while (cur > wanted)
505	{
506	end_thread ();
507	cur--;
508	}
509
510	while (started > wanted)
511	{
512	poll_wait ();
513	poll_cb ();
514	}
515	}
516
517	static void create_pipe ()
518	{
519	if (pipe (respipe))
520	croak ("unable to initialize result pipe");
521
522	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
523	croak ("cannot set result pipe to nonblocking mode");
524
525	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
526	croak ("cannot set result pipe to nonblocking mode");
527	}	897	}
528		898
529	/*****************************************************************************/	899	/*****************************************************************************/
530	/* work around various missing functions */	900	/* work around various missing functions */
531		901
…		…
536	/*	906	/*
537	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
538	* normal read/write by using a mutex. slows down execution a lot,	908	* normal read/write by using a mutex. slows down execution a lot,
539	* but that's your problem, not mine.	909	* but that's your problem, not mine.
540	*/	910	*/
541	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
542		912
543	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
544	{	914	{
545	ssize_t res;	915	ssize_t res;
546	off_t ooffset;	916	off_t ooffset;
547		917
548	pthread_mutex_lock (&preadwritelock);	918	X_LOCK (preadwritelock);
549	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
550	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
551	res = read (fd, buf, count);	921	res = read (fd, buf, count);
552	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
553	pthread_mutex_unlock (&preadwritelock);	923	X_UNLOCK (preadwritelock);
554		924
555	return res;	925	return res;
556	}	926	}
557		927
558	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
559	{	929	{
560	ssize_t res;	930	ssize_t res;
561	off_t ooffset;	931	off_t ooffset;
562		932
563	pthread_mutex_lock (&preadwritelock);	933	X_LOCK (preadwritelock);
564	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
565	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
566	res = write (fd, buf, count);	936	res = write (fd, buf, count);
567	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
568	pthread_mutex_unlock (&preadwritelock);	938	X_UNLOCK (preadwritelock);
569		939
570	return res;	940	return res;
571	}	941	}
		942	#endif
		943
		944	#ifndef HAVE_FUTIMES
		945
		946	# define utimes(path,times) aio_utimes (path, times)
		947	# define futimes(fd,times) aio_futimes (fd, times)
		948
		949	int aio_utimes (const char *filename, const struct timeval times[2])
		950	{
		951	if (times)
		952	{
		953	struct utimbuf buf;
		954
		955	buf.actime = times[0].tv_sec;
		956	buf.modtime = times[1].tv_sec;
		957
		958	return utime (filename, &buf);
		959	}
		960	else
		961	return utime (filename, 0);
		962	}
		963
		964	int aio_futimes (int fd, const struct timeval tv[2])
		965	{
		966	errno = ENOSYS;
		967	return -1;
		968	}
		969
572	#endif	970	#endif
573		971
574	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
575	# define fdatasync fsync	973	# define fdatasync fsync
576	#endif	974	#endif
577		975
578	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
579	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
580		978
581	static ssize_t readahead (int fd, off_t offset, size_t count)	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
582	{	980	{
583	char readahead_buf[4096];	981	size_t todo = count;
		982	dBUF;
584		983
585	while (count > 0)	984	while (todo > 0)
586	{	985	{
587	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
588		987
589	pread (fd, readahead_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
590	offset += len;	989	offset += len;
591	count -= len;	990	todo -= len;
592	}	991	}
593		992
594	errno = 0;	993	errno = 0;
		994	return count;
595	}	995	}
		996
596	#endif	997	#endif
597		998
598	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
599	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
600		1001
601	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
602		1003
603	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
604	{	1005	{
605	struct dirent *e;	1006	X_DIRENT *e;
606	int errorno;	1007	int errorno;
607		1008
608	pthread_mutex_lock (&readdirlock);	1009	X_LOCK (readdirlock);
609		1010
610	e = readdir (dirp);	1011	e = readdir (dirp);
611	errorno = errno;	1012	errorno = errno;
612		1013
613	if (e)	1014	if (e)
…		…
616	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
617	}	1018	}
618	else	1019	else
619	*res = 0;	1020	*res = 0;
620		1021
621	pthread_mutex_unlock (&readdirlock);	1022	X_UNLOCK (readdirlock);
622		1023
623	errno = errorno;	1024	errno = errorno;
624	return e ? 0 : -1;	1025	return e ? 0 : -1;
625	}	1026	}
626	#endif	1027	#endif
627		1028
628	/* sendfile always needs emulation */	1029	/* sendfile always needs emulation */
629	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
630	{	1031	{
631	ssize_t res;	1032	ssize_t res;
632		1033
633	if (!count)	1034	if (!count)
634	return 0;	1035	return 0;
…		…
645	{	1046	{
646	off_t sbytes;	1047	off_t sbytes;
647	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648		1049
649	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
650	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
651	res = sbytes;	1052	res = sbytes;
652	}	1053	}
653		1054
654	# elif __hpux	1055	# elif __hpux
655	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
683	#endif	1084	#endif
684	)	1085	)
685	)	1086	)
686	{	1087	{
687	/* emulate sendfile. this is a major pain in the ass */	1088	/* emulate sendfile. this is a major pain in the ass */
688	char buf[4096];	1089	dBUF;
		1090
689	res = 0;	1091	res = 0;
690		1092
691	while (count)	1093	while (count)
692	{	1094	{
693	ssize_t cnt;	1095	ssize_t cnt;
694		1096
695	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
696		1098
697	if (cnt <= 0)	1099	if (cnt <= 0)
698	{	1100	{
699	if (cnt && !res) res = -1;	1101	if (cnt && !res) res = -1;
700	break;	1102	break;
701	}	1103	}
702		1104
703	cnt = write (ofd, buf, cnt);	1105	cnt = write (ofd, aio_buf, cnt);
704		1106
705	if (cnt <= 0)	1107	if (cnt <= 0)
706	{	1108	{
707	if (cnt && !res) res = -1;	1109	if (cnt && !res) res = -1;
708	break;	1110	break;
…		…
716		1118
717	return res;	1119	return res;
718	}	1120	}
719		1121
720	/* read a full directory */	1122	/* read a full directory */
721	static int scandir_ (const char *path, void **namesp)	1123	static void scandir_ (aio_req req, worker *self)
722	{	1124	{
723	DIR *dirp = opendir (path);	1125	DIR *dirp;
724	union	1126	union
725	{	1127	{
726	struct dirent d;	1128	X_DIRENT d;
727	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
728	} u;	1130	} *u;
729	struct dirent *entp;	1131	X_DIRENT *entp;
730	char *name, *names;	1132	char *name, *names;
731	int memlen = 4096;	1133	int memlen = 4096;
732	int memofs = 0;	1134	int memofs = 0;
733	int res = 0;	1135	int res = 0;
734	int errorno;
735		1136
736	if (!dirp)	1137	X_LOCK (wrklock);
		1138	self->dirp = dirp = opendir (req->ptr1);
		1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
		1141	req->ptr2 = names = malloc (memlen);
		1142	X_UNLOCK (wrklock);
		1143
		1144	if (dirp && u && names)
		1145	for (;;)
		1146	{
		1147	errno = 0;
		1148	readdir_r (dirp, &u->d, &entp);
		1149
		1150	if (!entp)
		1151	break;
		1152
		1153	name = entp->d_name;
		1154
		1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1156	{
		1157	int len = strlen (name) + 1;
		1158
		1159	res++;
		1160
		1161	while (memofs + len > memlen)
		1162	{
		1163	memlen *= 2;
		1164	X_LOCK (wrklock);
		1165	req->ptr2 = names = realloc (names, memlen);
		1166	X_UNLOCK (wrklock);
		1167
		1168	if (!names)
		1169	break;
		1170	}
		1171
		1172	memcpy (names + memofs, name, len);
		1173	memofs += len;
		1174	}
		1175	}
		1176
		1177	if (errno)
		1178	res = -1;
		1179
		1180	req->result = res;
		1181	}
		1182
		1183	static int
		1184	aio_close (int fd)
		1185	{
		1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1187
		1188	X_LOCK (wrklock);
		1189
		1190	if (close_pipe < 0)
		1191	{
		1192	int pipefd [2];
		1193
		1194	if (pipe (pipefd) < 0
		1195	|| close (pipefd [1]) < 0
		1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1197	{
		1198	X_UNLOCK (wrklock);
737	return -1;	1199	return -1;
		1200	}
738		1201
739	names = malloc (memlen);	1202	close_pipe = pipefd [0];
		1203	}
		1204
		1205	X_UNLOCK (wrklock);
		1206
		1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
		1208	}
		1209
		1210	/*****************************************************************************/
		1211
		1212	X_THREAD_PROC (aio_proc)
		1213	{
		1214	aio_req req;
		1215	struct timespec ts;
		1216	worker *self = (worker *)thr_arg;
		1217
		1218	/* try to distribute timeouts somewhat randomly */
		1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
740		1220
741	for (;;)	1221	for (;;)
742	{	1222	{
743	errno = 0, readdir_r (dirp, &u.d, &entp);	1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
744		1224
745	if (!entp)	1225	X_LOCK (reqlock);
746	break;
747
748	name = entp->d_name;
749
750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751	{
752	int len = strlen (name) + 1;
753
754	res++;
755
756	while (memofs + len > memlen)
757	{
758	memlen *= 2;
759	names = realloc (names, memlen);
760	if (!names)
761	break;
762	}
763
764	memcpy (names + memofs, name, len);
765	memofs += len;
766	}
767	}
768
769	errorno = errno;
770	closedir (dirp);
771
772	if (errorno)
773	{
774	free (names);
775	errno = errorno;
776	res = -1;
777	}
778
779	*namesp = (void *)names;
780	return res;
781	}
782
783	/*****************************************************************************/
784
785	static void *aio_proc (void *thr_arg)
786	{
787	aio_req req;
788	int type;
789
790	do
791	{
792	pthread_mutex_lock (&reqlock);
793		1226
794	for (;;)	1227	for (;;)
795	{	1228	{
796	req = reqs;	1229	self->req = req = reqq_shift (&req_queue);
797
798	if (reqs)
799	{
800	reqs = reqs->next;
801	if (!reqs) reqe = 0;
802	}
803		1230
804	if (req)	1231	if (req)
805	break;	1232	break;
806		1233
807	pthread_cond_wait (&reqwait, &reqlock);	1234	++idle;
		1235
		1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1237	== ETIMEDOUT)
		1238	{
		1239	if (idle > max_idle)
		1240	{
		1241	--idle;
		1242	X_UNLOCK (reqlock);
		1243	X_LOCK (wrklock);
		1244	--started;
		1245	X_UNLOCK (wrklock);
		1246	goto quit;
		1247	}
		1248
		1249	/* we are allowed to idle, so do so without any timeout */
		1250	X_COND_WAIT (reqwait, reqlock);
		1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1252	}
		1253
		1254	--idle;
808	}	1255	}
809		1256
810	pthread_mutex_unlock (&reqlock);	1257	--nready;
		1258
		1259	X_UNLOCK (reqlock);
811		1260
812	errno = 0; /* strictly unnecessary */	1261	errno = 0; /* strictly unnecessary */
813	type = req->type; /* remember type for QUIT check */
814		1262
815	if (!(req->flags & FLAG_CANCELLED))	1263	if (!(req->flags & FLAG_CANCELLED))
816	switch (type)	1264	switch (req->type)
817	{	1265	{
818	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1266	case REQ_READ: req->result = req->offs >= 0
819	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1267	? pread (req->int1, req->ptr1, req->size, req->offs)
		1268	: read (req->int1, req->ptr1, req->size); break;
		1269	case REQ_WRITE: req->result = req->offs >= 0
		1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1271	: write (req->int1, req->ptr1, req->size); break;
820		1272
821	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
822	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
823		1275
824	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
825	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
826	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
827		1279
		1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1286
828	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
829	case REQ_CLOSE: req->result = close (req->fd); break;	1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
830	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
831	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
832	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
833	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
834	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
835		1297
836	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1298	case REQ_SYNC: req->result = 0; sync (); break;
837	case REQ_FSYNC: req->result = fsync (req->fd); break;	1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
838	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
839		1301
		1302	case REQ_READDIR: scandir_ (req, self); break;
		1303
840	case REQ_SLEEP:	1304	case REQ_BUSY:
		1305	#ifdef _WIN32
		1306	Sleep (req->nv1 * 1000.);
		1307	#else
841	{	1308	{
842	struct timeval tv;	1309	struct timeval tv;
843		1310
844	tv.tv_sec = req->fd;	1311	tv.tv_sec = req->nv1;
845	tv.tv_usec = req->fd2;	1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
846		1313
847	req->result = select (0, 0, 0, 0, &tv);	1314	req->result = select (0, 0, 0, 0, &tv);
848	}	1315	}
		1316	#endif
		1317	break;
		1318
		1319	case REQ_UTIME:
		1320	case REQ_FUTIME:
		1321	{
		1322	struct timeval tv[2];
		1323	struct timeval *times;
		1324
		1325	if (req->nv1 != -1. || req->nv2 != -1.)
		1326	{
		1327	tv[0].tv_sec = req->nv1;
		1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1329	tv[1].tv_sec = req->nv2;
		1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1331
		1332	times = tv;
		1333	}
		1334	else
		1335	times = 0;
		1336
		1337
		1338	req->result = req->type == REQ_FUTIME
		1339	? futimes (req->int1, times)
		1340	: utimes (req->ptr1, times);
		1341	}
849		1342
850	case REQ_GROUP:	1343	case REQ_GROUP:
851	case REQ_NOP:	1344	case REQ_NOP:
		1345	break;
		1346
852	case REQ_QUIT:	1347	case REQ_QUIT:
853	break;	1348	goto quit;
854		1349
855	default:	1350	default:
856	req->result = ENOSYS;	1351	req->result = -1;
857	break;	1352	break;
858	}	1353	}
859		1354
860	req->errorno = errno;	1355	req->errorno = errno;
861		1356
862	pthread_mutex_lock (&reslock);	1357	X_LOCK (reslock);
863		1358
864	req->next = 0;	1359	++npending;
865		1360
866	if (rese)	1361	if (!reqq_push (&res_queue, req))
867	{	1362	{
868	rese->next = req;	1363	/* write a dummy byte to the pipe so fh becomes ready */
869	rese = req;	1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1365
		1366	/* optionally signal the main thread asynchronously */
		1367	if (main_sig)
		1368	pthread_kill (main_tid, main_sig);
870	}	1369	}
871	else
872	{
873	rese = ress = req;
874		1370
875	/* write a dummy byte to the pipe so fh becomes ready */	1371	self->req = 0;
876	write (respipe [1], &respipe, 1);	1372	worker_clear (self);
877	}
878		1373
879	pthread_mutex_unlock (&reslock);	1374	X_UNLOCK (reslock);
880	}	1375	}
881	while (type != REQ_QUIT);	1376
		1377	quit:
		1378	X_LOCK (wrklock);
		1379	worker_free (self);
		1380	X_UNLOCK (wrklock);
882		1381
883	return 0;	1382	return 0;
884	}	1383	}
885		1384
886	/*****************************************************************************/	1385	/*****************************************************************************/
887		1386
888	static void atfork_prepare (void)	1387	static void atfork_prepare (void)
889	{	1388	{
890	pthread_mutex_lock (&reqlock);	1389	X_LOCK (wrklock);
891	pthread_mutex_lock (&reslock);	1390	X_LOCK (reqlock);
		1391	X_LOCK (reslock);
892	#if !HAVE_PREADWRITE	1392	#if !HAVE_PREADWRITE
893	pthread_mutex_lock (&preadwritelock);	1393	X_LOCK (preadwritelock);
894	#endif	1394	#endif
895	#if !HAVE_READDIR_R	1395	#if !HAVE_READDIR_R
896	pthread_mutex_lock (&readdirlock);	1396	X_LOCK (readdirlock);
897	#endif	1397	#endif
898	}	1398	}
899		1399
900	static void atfork_parent (void)	1400	static void atfork_parent (void)
901	{	1401	{
902	#if !HAVE_READDIR_R	1402	#if !HAVE_READDIR_R
903	pthread_mutex_unlock (&readdirlock);	1403	X_UNLOCK (readdirlock);
904	#endif	1404	#endif
905	#if !HAVE_PREADWRITE	1405	#if !HAVE_PREADWRITE
906	pthread_mutex_unlock (&preadwritelock);	1406	X_UNLOCK (preadwritelock);
907	#endif	1407	#endif
908	pthread_mutex_unlock (&reslock);	1408	X_UNLOCK (reslock);
909	pthread_mutex_unlock (&reqlock);	1409	X_UNLOCK (reqlock);
		1410	X_UNLOCK (wrklock);
910	}	1411	}
911		1412
912	static void atfork_child (void)	1413	static void atfork_child (void)
913	{	1414	{
914	aio_req prv;	1415	aio_req prv;
915		1416
916	started = 0;	1417	while (prv = reqq_shift (&req_queue))
		1418	req_destroy (prv);
917		1419
918	while (reqs)	1420	while (prv = reqq_shift (&res_queue))
		1421	req_destroy (prv);
		1422
		1423	while (wrk_first.next != &wrk_first)
919	{	1424	{
920	prv = reqs;	1425	worker *wrk = wrk_first.next;
921	reqs = prv->next;	1426
		1427	if (wrk->req)
		1428	req_destroy (wrk->req);
		1429
		1430	worker_clear (wrk);
922	req_free (prv);	1431	worker_free (wrk);
923	}	1432	}
924		1433
925	reqs = reqe = 0;	1434	started = 0;
926		1435	idle = 0;
927	while (ress)	1436	nreqs = 0;
928	{	1437	nready = 0;
929	prv = ress;	1438	npending = 0;
930	ress = prv->next;
931	req_free (prv);
932	}
933
934	ress = rese = 0;
935		1439
936	close (respipe [0]);
937	close (respipe [1]);
938	create_pipe ();	1440	create_respipe ();
939		1441
940	atfork_parent ();	1442	atfork_parent ();
941	}	1443	}
942		1444
943	#define dREQ \	1445	#define dREQ \
…		…
965		1467
966	PROTOTYPES: ENABLE	1468	PROTOTYPES: ENABLE
967		1469
968	BOOT:	1470	BOOT:
969	{	1471	{
970	HV *stash = gv_stashpv ("IO::AIO", 1);	1472	stash = gv_stashpv ("IO::AIO", 1);
		1473
971	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
972	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
973	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1479	#ifdef _WIN32
		1480	X_MUTEX_CHECK (wrklock);
		1481	X_MUTEX_CHECK (reslock);
		1482	X_MUTEX_CHECK (reqlock);
		1483	X_MUTEX_CHECK (reqwait);
		1484	X_MUTEX_CHECK (preadwritelock);
		1485	X_MUTEX_CHECK (readdirlock);
974		1486
975	create_pipe ();	1487	X_COND_CHECK (reqwait);
		1488	#else
		1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1491	#endif
		1492
		1493	create_respipe ();
		1494
976	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
977	}	1496	}
978		1497
979	void	1498	void
980	min_parallel (nthreads)	1499	max_poll_reqs (int nreqs)
981	int nthreads
982	PROTOTYPE: $	1500	PROTOTYPE: $
		1501	CODE:
		1502	max_poll_reqs = nreqs;
983		1503
984	void	1504	void
985	max_parallel (nthreads)	1505	max_poll_time (double nseconds)
986	int nthreads
987	PROTOTYPE: $	1506	PROTOTYPE: $
		1507	CODE:
		1508	max_poll_time = nseconds * AIO_TICKS;
		1509
		1510	void
		1511	min_parallel (int nthreads)
		1512	PROTOTYPE: $
		1513
		1514	void
		1515	max_parallel (int nthreads)
		1516	PROTOTYPE: $
		1517
		1518	void
		1519	max_idle (int nthreads)
		1520	PROTOTYPE: $
		1521	CODE:
		1522	set_max_idle (nthreads);
988		1523
989	int	1524	int
990	max_outstanding (nreqs)	1525	max_outstanding (int maxreqs)
991	int nreqs	1526	PROTOTYPE: $
992	PROTOTYPE: $
993	CODE:	1527	CODE:
994	RETVAL = max_outstanding;	1528	RETVAL = max_outstanding;
995	max_outstanding = nreqs;	1529	max_outstanding = maxreqs;
		1530	OUTPUT:
		1531	RETVAL
996		1532
997	void	1533	void
998	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
999	SV * pathname
1000	int flags
1001	int mode
1002	SV * callback
1003	PROTOTYPE: $$$;$	1535	PROTOTYPE: $$$;$
1004	PPCODE:	1536	PPCODE:
1005	{	1537	{
1006	dREQ;	1538	dREQ;
1007		1539
1008	req->type = REQ_OPEN;	1540	req->type = REQ_OPEN;
1009	req->data = newSVsv (pathname);	1541	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1542	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011	req->fd = flags;	1543	req->int1 = flags;
1012	req->mode = mode;	1544	req->mode = mode;
1013		1545
1014	REQ_SEND;	1546	REQ_SEND;
1015	}	1547	}
1016		1548
1017	void	1549	void
1018	aio_close (fh,callback=&PL_sv_undef)	1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1019	SV * fh
1020	SV * callback
1021	PROTOTYPE: $;$	1551	PROTOTYPE: $;$
1022	ALIAS:	1552	ALIAS:
1023	aio_close = REQ_CLOSE
1024	aio_fsync = REQ_FSYNC	1553	aio_fsync = REQ_FSYNC
1025	aio_fdatasync = REQ_FDATASYNC	1554	aio_fdatasync = REQ_FDATASYNC
1026	PPCODE:	1555	PPCODE:
1027	{	1556	{
1028	dREQ;	1557	dREQ;
1029		1558
1030	req->type = ix;	1559	req->type = ix;
1031	req->fh = newSVsv (fh);	1560	req->sv1 = newSVsv (fh);
1032	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1033		1562
1034	REQ_SEND (req);	1563	REQ_SEND (req);
1035	}	1564	}
1036		1565
1037	void	1566	void
		1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1568	PROTOTYPE: $;$
		1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
		1573	req->type = REQ_CLOSE;
		1574	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		1575
		1576	REQ_SEND (req);
		1577	}
		1578
		1579	void
1038	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1580	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1039	SV * fh
1040	UV offset
1041	UV length
1042	SV * data
1043	UV dataoffset
1044	SV * callback
1045	ALIAS:	1581	ALIAS:
1046	aio_read = REQ_READ	1582	aio_read = REQ_READ
1047	aio_write = REQ_WRITE	1583	aio_write = REQ_WRITE
1048	PROTOTYPE: $$$$$;$	1584	PROTOTYPE: $$$$$;$
1049	PPCODE:	1585	PPCODE:
1050	{	1586	{
1051	aio_req req;
1052	STRLEN svlen;	1587	STRLEN svlen;
1053	char *svptr = SvPVbyte (data, svlen);	1588	char *svptr = SvPVbyte (data, svlen);
		1589	UV len = SvUV (length);
1054		1590
1055	SvUPGRADE (data, SVt_PV);	1591	SvUPGRADE (data, SVt_PV);
1056	SvPOK_on (data);	1592	SvPOK_on (data);
1057		1593
1058	if (dataoffset < 0)	1594	if (dataoffset < 0)
1059	dataoffset += svlen;	1595	dataoffset += svlen;
1060		1596
1061	if (dataoffset < 0 || dataoffset > svlen)	1597	if (dataoffset < 0 || dataoffset > svlen)
1062	croak ("data offset outside of string");	1598	croak ("dataoffset outside of data scalar");
1063		1599
1064	if (ix == REQ_WRITE)	1600	if (ix == REQ_WRITE)
1065	{	1601	{
1066	/* write: check length and adjust. */	1602	/* write: check length and adjust. */
1067	if (length < 0 || length + dataoffset > svlen)	1603	if (!SvOK (length) || len + dataoffset > svlen)
1068	length = svlen - dataoffset;	1604	len = svlen - dataoffset;
1069	}	1605	}
1070	else	1606	else
1071	{	1607	{
1072	/* read: grow scalar as necessary */	1608	/* read: grow scalar as necessary */
1073	svptr = SvGROW (data, length + dataoffset);	1609	svptr = SvGROW (data, len + dataoffset + 1);
1074	}	1610	}
1075		1611
1076	if (length < 0)	1612	if (len < 0)
1077	croak ("length must not be negative");	1613	croak ("length must not be negative");
1078		1614
1079	{	1615	{
1080	dREQ;	1616	dREQ;
1081		1617
1082	req->type = ix;	1618	req->type = ix;
1083	req->fh = newSVsv (fh);	1619	req->sv1 = newSVsv (fh);
1084	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1620	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1085	: IoOFP (sv_2io (fh)));	1621	: IoOFP (sv_2io (fh)));
		1622	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1086	req->offset = offset;	1623	req->size = len;
1087	req->length = length;
1088	req->data = SvREFCNT_inc (data);	1624	req->sv2 = SvREFCNT_inc (data);
1089	req->dataptr = (char *)svptr + dataoffset;	1625	req->ptr1 = (char *)svptr + dataoffset;
		1626	req->stroffset = dataoffset;
1090		1627
1091	if (!SvREADONLY (data))	1628	if (!SvREADONLY (data))
1092	{	1629	{
1093	SvREADONLY_on (data);	1630	SvREADONLY_on (data);
1094	req->data2ptr = (void *)data;	1631	req->flags |= FLAG_SV2_RO_OFF;
1095	}	1632	}
1096		1633
1097	REQ_SEND;	1634	REQ_SEND;
1098	}	1635	}
1099	}	1636	}
1100		1637
1101	void	1638	void
		1639	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1640	PROTOTYPE: $$;$
		1641	PPCODE:
		1642	{
		1643	SV *data;
		1644	dREQ;
		1645
		1646	data = newSV (NAME_MAX);
		1647	SvPOK_on (data);
		1648
		1649	req->type = REQ_READLINK;
		1650	req->sv1 = newSVsv (path);
		1651	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1652	req->sv2 = data;
		1653	req->ptr1 = SvPVbyte_nolen (data);
		1654
		1655	REQ_SEND;
		1656	}
		1657
		1658	void
1102	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1659	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1103	SV * out_fh
1104	SV * in_fh
1105	UV in_offset
1106	UV length
1107	SV * callback
1108	PROTOTYPE: $$$$;$	1660	PROTOTYPE: $$$$;$
1109	PPCODE:	1661	PPCODE:
1110	{	1662	{
1111	dREQ;	1663	dREQ;
1112		1664
1113	req->type = REQ_SENDFILE;	1665	req->type = REQ_SENDFILE;
1114	req->fh = newSVsv (out_fh);	1666	req->sv1 = newSVsv (out_fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1116	req->fh2 = newSVsv (in_fh);	1668	req->sv2 = newSVsv (in_fh);
1117	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1669	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1118	req->offset = in_offset;	1670	req->offs = SvVAL64 (in_offset);
1119	req->length = length;	1671	req->size = length;
1120		1672
1121	REQ_SEND;	1673	REQ_SEND;
1122	}	1674	}
1123		1675
1124	void	1676	void
1125	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1677	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1126	SV * fh
1127	UV offset
1128	IV length
1129	SV * callback
1130	PROTOTYPE: $$$;$	1678	PROTOTYPE: $$$;$
1131	PPCODE:	1679	PPCODE:
1132	{	1680	{
1133	dREQ;	1681	dREQ;
1134		1682
1135	req->type = REQ_READAHEAD;	1683	req->type = REQ_READAHEAD;
1136	req->fh = newSVsv (fh);	1684	req->sv1 = newSVsv (fh);
1137	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1138	req->offset = offset;	1686	req->offs = SvVAL64 (offset);
1139	req->length = length;	1687	req->size = length;
1140		1688
1141	REQ_SEND;	1689	REQ_SEND;
1142	}	1690	}
1143		1691
1144	void	1692	void
1145	aio_stat (fh_or_path,callback=&PL_sv_undef)	1693	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1146	SV * fh_or_path
1147	SV * callback
1148	ALIAS:	1694	ALIAS:
1149	aio_stat = REQ_STAT	1695	aio_stat = REQ_STAT
1150	aio_lstat = REQ_LSTAT	1696	aio_lstat = REQ_LSTAT
1151	PPCODE:	1697	PPCODE:
1152	{	1698	{
1153	dREQ;	1699	dREQ;
1154		1700
1155	New (0, req->statdata, 1, Stat_t);	1701	req->ptr2 = malloc (sizeof (Stat_t));
1156	if (!req->statdata)	1702	if (!req->ptr2)
1157	{	1703	{
1158	req_free (req);	1704	req_destroy (req);
1159	croak ("out of memory during aio_req->statdata allocation");	1705	croak ("out of memory during aio_stat statdata allocation");
1160	}	1706	}
		1707
		1708	req->flags |= FLAG_PTR2_FREE;
		1709	req->sv1 = newSVsv (fh_or_path);
1161		1710
1162	if (SvPOK (fh_or_path))	1711	if (SvPOK (fh_or_path))
1163	{	1712	{
1164	req->type = ix;	1713	req->type = ix;
1165	req->data = newSVsv (fh_or_path);
1166	req->dataptr = SvPVbyte_nolen (req->data);	1714	req->ptr1 = SvPVbyte_nolen (req->sv1);
1167	}	1715	}
1168	else	1716	else
1169	{	1717	{
1170	req->type = REQ_FSTAT;	1718	req->type = REQ_FSTAT;
1171	req->fh = newSVsv (fh_or_path);
1172	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1719	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1173	}	1720	}
1174		1721
1175	REQ_SEND;	1722	REQ_SEND;
1176	}	1723	}
1177		1724
1178	void	1725	void
		1726	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1727	PPCODE:
		1728	{
		1729	dREQ;
		1730
		1731	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1732	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1733	req->sv1 = newSVsv (fh_or_path);
		1734
		1735	if (SvPOK (fh_or_path))
		1736	{
		1737	req->type = REQ_UTIME;
		1738	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1739	}
		1740	else
		1741	{
		1742	req->type = REQ_FUTIME;
		1743	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1744	}
		1745
		1746	REQ_SEND;
		1747	}
		1748
		1749	void
		1750	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1751	PPCODE:
		1752	{
		1753	dREQ;
		1754
		1755	req->sv1 = newSVsv (fh_or_path);
		1756	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1757
		1758	if (SvPOK (fh_or_path))
		1759	{
		1760	req->type = REQ_TRUNCATE;
		1761	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1762	}
		1763	else
		1764	{
		1765	req->type = REQ_FTRUNCATE;
		1766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1767	}
		1768
		1769	REQ_SEND;
		1770	}
		1771
		1772	void
		1773	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1774	PPCODE:
		1775	{
		1776	dREQ;
		1777
		1778	req->mode = mode;
		1779	req->sv1 = newSVsv (fh_or_path);
		1780
		1781	if (SvPOK (fh_or_path))
		1782	{
		1783	req->type = REQ_CHMOD;
		1784	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1785	}
		1786	else
		1787	{
		1788	req->type = REQ_FCHMOD;
		1789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1790	}
		1791
		1792	REQ_SEND;
		1793	}
		1794
		1795	void
		1796	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1797	PPCODE:
		1798	{
		1799	dREQ;
		1800
		1801	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1802	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1803	req->sv1 = newSVsv (fh_or_path);
		1804
		1805	if (SvPOK (fh_or_path))
		1806	{
		1807	req->type = REQ_CHOWN;
		1808	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1809	}
		1810	else
		1811	{
		1812	req->type = REQ_FCHOWN;
		1813	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1814	}
		1815
		1816	REQ_SEND;
		1817	}
		1818
		1819	void
1179	aio_unlink (pathname,callback=&PL_sv_undef)	1820	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1180	SV * pathname
1181	SV * callback
1182	ALIAS:	1821	ALIAS:
1183	aio_unlink = REQ_UNLINK	1822	aio_unlink = REQ_UNLINK
1184	aio_rmdir = REQ_RMDIR	1823	aio_rmdir = REQ_RMDIR
1185	aio_readdir = REQ_READDIR	1824	aio_readdir = REQ_READDIR
1186	PPCODE:	1825	PPCODE:
1187	{	1826	{
1188	dREQ;	1827	dREQ;
1189		1828
1190	req->type = ix;	1829	req->type = ix;
1191	req->data = newSVsv (pathname);	1830	req->sv1 = newSVsv (pathname);
1192	req->dataptr = SvPVbyte_nolen (req->data);	1831	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1832
		1833	REQ_SEND;
		1834	}
		1835
		1836	void
		1837	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1838	PPCODE:
		1839	{
		1840	dREQ;
1193		1841
		1842	req->type = REQ_MKDIR;
		1843	req->sv1 = newSVsv (pathname);
		1844	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1845	req->mode = mode;
		1846
1194	REQ_SEND;	1847	REQ_SEND;
1195	}	1848	}
1196		1849
1197	void	1850	void
1198	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1851	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1199	SV * oldpath
1200	SV * newpath
1201	SV * callback
1202	ALIAS:	1852	ALIAS:
1203	aio_link = REQ_LINK	1853	aio_link = REQ_LINK
1204	aio_symlink = REQ_SYMLINK	1854	aio_symlink = REQ_SYMLINK
1205	aio_rename = REQ_RENAME	1855	aio_rename = REQ_RENAME
1206	PPCODE:	1856	PPCODE:
1207	{	1857	{
1208	dREQ;	1858	dREQ;
1209		1859
1210	req->type = ix;	1860	req->type = ix;
1211	req->fh = newSVsv (oldpath);	1861	req->sv2 = newSVsv (oldpath);
1212	req->data2ptr = SvPVbyte_nolen (req->fh);	1862	req->ptr2 = SvPVbyte_nolen (req->sv2);
1213	req->data = newSVsv (newpath);	1863	req->sv1 = newSVsv (newpath);
1214	req->dataptr = SvPVbyte_nolen (req->data);	1864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1215		1865
1216	REQ_SEND;	1866	REQ_SEND;
1217	}	1867	}
1218		1868
1219	void	1869	void
1220	aio_sleep (delay,callback=&PL_sv_undef)	1870	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1221	double delay
1222	SV * callback
1223	PPCODE:	1871	PPCODE:
1224	{	1872	{
1225	dREQ;	1873	dREQ;
1226		1874
1227	req->type = REQ_SLEEP;	1875	req->type = REQ_MKNOD;
1228	req->fd = delay < 0. ? 0 : delay;	1876	req->sv1 = newSVsv (pathname);
1229	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1877	req->ptr1 = SvPVbyte_nolen (req->sv1);
1230		1878	req->mode = (mode_t)mode;
		1879	req->offs = dev;
		1880
1231	REQ_SEND;	1881	REQ_SEND;
1232	}	1882	}
1233		1883
1234	void	1884	void
		1885	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1886	PPCODE:
		1887	{
		1888	dREQ;
		1889
		1890	req->type = REQ_BUSY;
		1891	req->nv1 = delay < 0. ? 0. : delay;
		1892
		1893	REQ_SEND;
		1894	}
		1895
		1896	void
1235	aio_group (callback=&PL_sv_undef)	1897	aio_group (SV *callback=&PL_sv_undef)
1236	SV * callback
1237	PROTOTYPE: ;$	1898	PROTOTYPE: ;$
1238	PPCODE:	1899	PPCODE:
1239	{	1900	{
1240	dREQ;	1901	dREQ;
1241		1902
1242	req->type = REQ_GROUP;	1903	req->type = REQ_GROUP;
		1904
1243	req_send (req);	1905	req_send (req);
1244
1245	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1906	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1246	}	1907	}
1247		1908
1248	void	1909	void
1249	aio_nop (callback=&PL_sv_undef)	1910	aio_nop (SV *callback=&PL_sv_undef)
1250	SV * callback	1911	ALIAS:
		1912	aio_nop = REQ_NOP
		1913	aio_sync = REQ_SYNC
1251	PPCODE:	1914	PPCODE:
1252	{	1915	{
1253	dREQ;	1916	dREQ;
1254		1917
1255	req->type = REQ_NOP;	1918	req->type = ix;
1256		1919
1257	REQ_SEND;	1920	REQ_SEND;
1258	}	1921	}
1259		1922
1260	#if 0	1923	int
1261		1924	aioreq_pri (int pri = 0)
1262	void	1925	PROTOTYPE: ;$
1263	aio_pri (int pri = DEFAULT_PRI)
1264	CODE:	1926	CODE:
		1927	RETVAL = next_pri - PRI_BIAS;
		1928	if (items > 0)
		1929	{
1265	if (pri < PRI_MIN) pri = PRI_MIN;	1930	if (pri < PRI_MIN) pri = PRI_MIN;
1266	if (pri > PRI_MAX) pri = PRI_MAX;	1931	if (pri > PRI_MAX) pri = PRI_MAX;
1267	next_pri = pri + PRI_BIAS;	1932	next_pri = pri + PRI_BIAS;
		1933	}
		1934	OUTPUT:
		1935	RETVAL
1268		1936
1269	#endif	1937	void
		1938	aioreq_nice (int nice = 0)
		1939	CODE:
		1940	nice = next_pri - nice;
		1941	if (nice < PRI_MIN) nice = PRI_MIN;
		1942	if (nice > PRI_MAX) nice = PRI_MAX;
		1943	next_pri = nice + PRI_BIAS;
1270		1944
1271	void	1945	void
1272	flush ()	1946	flush ()
1273	PROTOTYPE:	1947	PROTOTYPE:
1274	CODE:	1948	CODE:
…		…
1276	{	1950	{
1277	poll_wait ();	1951	poll_wait ();
1278	poll_cb ();	1952	poll_cb ();
1279	}	1953	}
1280		1954
1281	void	1955	int
1282	poll()	1956	poll()
1283	PROTOTYPE:	1957	PROTOTYPE:
1284	CODE:	1958	CODE:
1285	if (nreqs)
1286	{
1287	poll_wait ();	1959	poll_wait ();
1288	poll_cb ();	1960	RETVAL = poll_cb ();
1289	}	1961	OUTPUT:
		1962	RETVAL
1290		1963
1291	int	1964	int
1292	poll_fileno()	1965	poll_fileno()
1293	PROTOTYPE:	1966	PROTOTYPE:
1294	CODE:	1967	CODE:
…		…
1306		1979
1307	void	1980	void
1308	poll_wait()	1981	poll_wait()
1309	PROTOTYPE:	1982	PROTOTYPE:
1310	CODE:	1983	CODE:
1311	if (nreqs)
1312	poll_wait ();	1984	poll_wait ();
		1985
		1986	void
		1987	setsig (int signum = SIGIO)
		1988	PROTOTYPE: ;$
		1989	CODE:
		1990	{
		1991	if (block_sig_level)
		1992	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1993
		1994	X_LOCK (reslock);
		1995	main_tid = pthread_self ();
		1996	main_sig = signum;
		1997	X_UNLOCK (reslock);
		1998
		1999	if (main_sig && npending)
		2000	pthread_kill (main_tid, main_sig);
		2001	}
		2002
		2003	void
		2004	aio_block (SV *cb)
		2005	PROTOTYPE: &
		2006	PPCODE:
		2007	{
		2008	int count;
		2009
		2010	block_sig ();
		2011	PUSHMARK (SP);
		2012	PUTBACK;
		2013	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		2014	unblock_sig ();
		2015
		2016	if (SvTRUE (ERRSV))
		2017	croak (0);
		2018
		2019	XSRETURN (count);
		2020	}
1313		2021
1314	int	2022	int
1315	nreqs()	2023	nreqs()
1316	PROTOTYPE:	2024	PROTOTYPE:
1317	CODE:	2025	CODE:
1318	RETVAL = nreqs;	2026	RETVAL = nreqs;
1319	OUTPUT:	2027	OUTPUT:
1320	RETVAL	2028	RETVAL
1321		2029
		2030	int
		2031	nready()
		2032	PROTOTYPE:
		2033	CODE:
		2034	RETVAL = get_nready ();
		2035	OUTPUT:
		2036	RETVAL
		2037
		2038	int
		2039	npending()
		2040	PROTOTYPE:
		2041	CODE:
		2042	RETVAL = get_npending ();
		2043	OUTPUT:
		2044	RETVAL
		2045
		2046	int
		2047	nthreads()
		2048	PROTOTYPE:
		2049	CODE:
		2050	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2051	RETVAL = started;
		2052	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2053	OUTPUT:
		2054	RETVAL
		2055
1322	PROTOTYPES: DISABLE	2056	PROTOTYPES: DISABLE
1323		2057
1324	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2058	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325		2059
1326	void	2060	void
1327	cancel (aio_req_ornot req)	2061	cancel (aio_req_ornot req)
1328	PROTOTYPE:
1329	CODE:	2062	CODE:
1330	req_cancel (req);	2063	req_cancel (req);
1331		2064
1332	void	2065	void
1333	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2066	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1342	PPCODE:	2075	PPCODE:
1343	{	2076	{
1344	int i;	2077	int i;
1345	aio_req req;	2078	aio_req req;
1346		2079
		2080	if (main_sig && !block_sig_level)
		2081	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2082
1347	if (grp->fd == 2)	2083	if (grp->int1 == 2)
1348	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2084	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1349		2085
1350	for (i = 1; i < items; ++i )	2086	for (i = 1; i < items; ++i )
1351	{	2087	{
1352	if (GIMME_V != G_VOID)	2088	if (GIMME_V != G_VOID)
…		…
1354		2090
1355	req = SvAIO_REQ (ST (i));	2091	req = SvAIO_REQ (ST (i));
1356		2092
1357	if (req)	2093	if (req)
1358	{	2094	{
1359	++grp->length;	2095	++grp->size;
1360	req->grp = grp;	2096	req->grp = grp;
1361		2097
1362	req->grp_prev = 0;	2098	req->grp_prev = 0;
1363	req->grp_next = grp->grp_first;	2099	req->grp_next = grp->grp_first;
1364		2100
…		…
1369	}	2105	}
1370	}	2106	}
1371	}	2107	}
1372		2108
1373	void	2109	void
		2110	cancel_subs (aio_req_ornot req)
		2111	CODE:
		2112	req_cancel_subs (req);
		2113
		2114	void
1374	result (aio_req grp, ...)	2115	result (aio_req grp, ...)
1375	CODE:	2116	CODE:
1376	{	2117	{
1377	int i;	2118	int i;
		2119	AV *av;
		2120
		2121	grp->errorno = errno;
		2122
1378	AV *av = newAV ();	2123	av = newAV ();
1379		2124
1380	for (i = 1; i < items; ++i )	2125	for (i = 1; i < items; ++i )
1381	av_push (av, newSVsv (ST (i)));	2126	av_push (av, newSVsv (ST (i)));
1382		2127
1383	SvREFCNT_dec (grp->data);	2128	SvREFCNT_dec (grp->sv1);
1384	grp->data = (SV *)av;	2129	grp->sv1 = (SV *)av;
1385	}	2130	}
1386		2131
1387	void	2132	void
		2133	errno (aio_req grp, int errorno = errno)
		2134	CODE:
		2135	grp->errorno = errorno;
		2136
		2137	void
1388	feed_limit (aio_req grp, int limit)	2138	limit (aio_req grp, int limit)
1389	CODE:	2139	CODE:
1390	grp->fd2 = limit;	2140	grp->int2 = limit;
1391	aio_grp_feed (grp);	2141	aio_grp_feed (grp);
1392		2142
1393	void	2143	void
1394	feed (aio_req grp, SV *callback=&PL_sv_undef)	2144	feed (aio_req grp, SV *callback=&PL_sv_undef)
1395	CODE:	2145	CODE:
1396	{	2146	{
1397	SvREFCNT_dec (grp->fh2);	2147	SvREFCNT_dec (grp->sv2);
1398	grp->fh2 = newSVsv (callback);	2148	grp->sv2 = newSVsv (callback);
1399		2149
1400	if (grp->fd2 <= 0)	2150	if (grp->int2 <= 0)
1401	grp->fd2 = 2;	2151	grp->int2 = 2;
1402		2152
1403	aio_grp_feed (grp);	2153	aio_grp_feed (grp);
1404	}	2154	}
1405		2155

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