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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 1.103 by root, Sun Jul 8 09:09:34 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 stat
		30	# undef fstat
		31	# define lstat stat
		32	# undef truncate
		33	# undef ftruncate
		34	# undef open
		35	# undef close
		36	# undef unlink
		37	# undef rmdir
		38	# undef rename
		39	# undef lseek
		40
		41	# define chown(a,b,c) (errno = ENOSYS, -1)
		42	# define fchown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchmod(a,b) (errno = ENOSYS, -1)
		44	# define symlink(a,b) (errno = ENOSYS, -1)
		45	# define readlink(a,b,c) (errno = ENOSYS, -1)
		46	# define mknod(a,b,c) (errno = ENOSYS, -1)
		47	# define truncate(a,b) (errno = ENOSYS, -1)
		48	# define ftruncate(fd,o) chsize ((fd), (o))
		49	# define fsync(fd) _commit (fd)
		50	# define opendir(fd) (errno = ENOSYS, 0)
		51	# define readdir(fd) (errno = ENOSYS, -1)
		52	# define closedir(fd) (errno = ENOSYS, -1)
		53	# define mkdir(a,b) mkdir (a)
		54
		55	#else
		56
		57	# include "autoconf/config.h"
		58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	typedef struct dirent X_DIRENT;
		64
		65	#endif
23		66
24	#if HAVE_SENDFILE	67	#if HAVE_SENDFILE
25	# if __linux	68	# if __linux
26	# include <sys/sendfile.h>	69	# include <sys/sendfile.h>
27	# elif __freebsd	70	# elif __freebsd
…		…
34	# else	77	# else
35	# error sendfile support requested but not available	78	# error sendfile support requested but not available
36	# endif	79	# endif
37	#endif	80	#endif
38		81
		82	/* number of seconds after which idle threads exit */
		83	#define IDLE_TIMEOUT 10
		84
39	/* used for struct dirent, AIX doesn't provide it */	85	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	86	#ifndef NAME_MAX
41	# define NAME_MAX 4096	87	# define NAME_MAX 4096
42	#endif	88	#endif
43		89
44	#if __ia64	90	/* buffer size for various temporary buffers */
45	# define STACKSIZE 65536	91	#define AIO_BUFSIZE 65536
		92
		93	/* use NV for 32 bit perls as it allows larger offsets */
		94	#if IVSIZE >= 8
		95	# define SvVAL64 SvIV
46	#else	96	#else
47	# define STACKSIZE 8192	97	# define SvVAL64 SvNV
48	#endif	98	#endif
		99
		100	#define dBUF \
		101	char *aio_buf; \
		102	X_LOCK (wrklock); \
		103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		104	X_UNLOCK (wrklock); \
		105	if (!aio_buf) \
		106	return -1;
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
49		109
50	enum {	110	enum {
51	REQ_QUIT,	111	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	112	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	113	REQ_READ, REQ_WRITE,
54	REQ_SENDFILE,	114	REQ_READAHEAD, REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		116	REQ_TRUNCATE, REQ_FTRUNCATE,
		117	REQ_UTIME, REQ_FUTIME,
		118	REQ_CHMOD, REQ_FCHMOD,
		119	REQ_CHOWN, REQ_FCHOWN,
56	REQ_FSYNC, REQ_FDATASYNC,	120	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
58	REQ_READDIR,	122	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
60	REQ_GROUP, REQ_NOP,	124	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,	125	REQ_BUSY,
62	};	126	};
63		127
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	128	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	129	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		130
67	typedef struct aio_cb	131	typedef struct aio_cb
68	{	132	{
69	struct aio_cb *volatile next;	133	struct aio_cb *volatile next;
70		134
71	SV *data, *callback;	135	SV *callback;
72	SV *fh, *fh2;	136	SV *sv1, *sv2;
73	void *dataptr, *data2ptr;	137	void *ptr1, *ptr2;
74	Stat_t *statdata;
75	off_t offset;	138	off_t offs;
76	size_t length;	139	size_t size;
77	ssize_t result;	140	ssize_t result;
		141	double nv1, nv2;
78		142
79	STRLEN dataoffset;	143	STRLEN stroffset;
80	int type;	144	int type;
81	int fd, fd2;	145	int int1, int2, int3;
82	int errorno;	146	int errorno;
83	mode_t mode; /* open */	147	mode_t mode; /* open */
84		148
85	unsigned char flags;	149	unsigned char flags;
86	unsigned char pri;	150	unsigned char pri;
…		…
88	SV *self; /* the perl counterpart of this request, if any */	152	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;	154	} aio_cb;
91		155
92	enum {	156	enum {
93	FLAG_CANCELLED = 0x01,	157	FLAG_CANCELLED = 0x01, /* request was cancelled */
		158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
94	};	160	};
95		161
96	typedef aio_cb *aio_req;	162	typedef aio_cb *aio_req;
97	typedef aio_cb *aio_req_ornot;	163	typedef aio_cb *aio_req_ornot;
98		164
…		…
100	PRI_MIN = -4,	166	PRI_MIN = -4,
101	PRI_MAX = 4,	167	PRI_MAX = 4,
102		168
103	DEFAULT_PRI = 0,	169	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,	170	PRI_BIAS = -PRI_MIN,
		171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
105	};	172	};
106		173
		174	#define AIO_TICKS ((1000000 + 1023) >> 10)
		175
		176	static unsigned int max_poll_time = 0;
		177	static unsigned int max_poll_reqs = 0;
		178
		179	/* calculcate time difference in ~1/AIO_TICKS of a second */
		180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		181	{
		182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		184	}
		185
		186	static thread_t main_tid;
		187	static int main_sig;
		188	static int block_sig_level;
		189
		190	void block_sig ()
		191	{
		192	sigset_t ss;
		193
		194	if (block_sig_level++)
		195	return;
		196
		197	if (!main_sig)
		198	return;
		199
		200	sigemptyset (&ss);
		201	sigaddset (&ss, main_sig);
		202	pthread_sigmask (SIG_BLOCK, &ss, 0);
		203	}
		204
		205	void unblock_sig ()
		206	{
		207	sigset_t ss;
		208
		209	if (--block_sig_level)
		210	return;
		211
		212	if (!main_sig)
		213	return;
		214
		215	sigemptyset (&ss);
		216	sigaddset (&ss, main_sig);
		217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		218	}
		219
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;	220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108		221
109	static int started, wanted;	222	static unsigned int started, idle, wanted;
110	static volatile int nreqs;	223
111	static int max_outstanding = 1<<30;	224	/* worker threads management */
		225	static mutex_t wrklock = X_MUTEX_INIT;
		226
		227	typedef struct worker {
		228	/* locked by wrklock */
		229	struct worker *prev, *next;
		230
		231	thread_t tid;
		232
		233	/* locked by reslock, reqlock or wrklock */
		234	aio_req req; /* currently processed request */
		235	void *dbuf;
		236	DIR *dirp;
		237	} worker;
		238
		239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		240
		241	static void worker_clear (worker *wrk)
		242	{
		243	if (wrk->dirp)
		244	{
		245	closedir (wrk->dirp);
		246	wrk->dirp = 0;
		247	}
		248
		249	if (wrk->dbuf)
		250	{
		251	free (wrk->dbuf);
		252	wrk->dbuf = 0;
		253	}
		254	}
		255
		256	static void worker_free (worker *wrk)
		257	{
		258	wrk->next->prev = wrk->prev;
		259	wrk->prev->next = wrk->next;
		260
		261	free (wrk);
		262	}
		263
		264	static volatile unsigned int nreqs, nready, npending;
		265	static volatile unsigned int max_idle = 4;
		266	static volatile unsigned int max_outstanding = 0xffffffff;
112	static int respipe [2];	267	static int respipe [2];
113		268
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	269	static mutex_t reslock = X_MUTEX_INIT;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	270	static mutex_t reqlock = X_MUTEX_INIT;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	271	static cond_t reqwait = X_COND_INIT;
117		272
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	273	#if WORDACCESS_UNSAFE
119	static volatile aio_req ress, rese; /* queue start, queue end */
120		274
		275	static unsigned int get_nready ()
		276	{
		277	unsigned int retval;
		278
		279	X_LOCK (reqlock);
		280	retval = nready;
		281	X_UNLOCK (reqlock);
		282
		283	return retval;
		284	}
		285
		286	static unsigned int get_npending ()
		287	{
		288	unsigned int retval;
		289
		290	X_LOCK (reslock);
		291	retval = npending;
		292	X_UNLOCK (reslock);
		293
		294	return retval;
		295	}
		296
		297	static unsigned int get_nthreads ()
		298	{
		299	unsigned int retval;
		300
		301	X_LOCK (wrklock);
		302	retval = started;
		303	X_UNLOCK (wrklock);
		304
		305	return retval;
		306	}
		307
		308	#else
		309
		310	# define get_nready() nready
		311	# define get_npending() npending
		312	# define get_nthreads() started
		313
		314	#endif
		315
		316	/*
		317	* a somewhat faster data structure might be nice, but
		318	* with 8 priorities this actually needs <20 insns
		319	* per shift, the most expensive operation.
		320	*/
		321	typedef struct {
		322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		323	int size;
		324	} reqq;
		325
		326	static reqq req_queue;
		327	static reqq res_queue;
		328
		329	int reqq_push (reqq *q, aio_req req)
		330	{
		331	int pri = req->pri;
		332	req->next = 0;
		333
		334	if (q->qe[pri])
		335	{
		336	q->qe[pri]->next = req;
		337	q->qe[pri] = req;
		338	}
		339	else
		340	q->qe[pri] = q->qs[pri] = req;
		341
		342	return q->size++;
		343	}
		344
		345	aio_req reqq_shift (reqq *q)
		346	{
		347	int pri;
		348
		349	if (!q->size)
		350	return 0;
		351
		352	--q->size;
		353
		354	for (pri = NUM_PRI; pri--; )
		355	{
		356	aio_req req = q->qs[pri];
		357
		358	if (req)
		359	{
		360	if (!(q->qs[pri] = req->next))
		361	q->qe[pri] = 0;
		362
		363	return req;
		364	}
		365	}
		366
		367	abort ();
		368	}
		369
		370	static int poll_cb ();
121	static void req_invoke (aio_req req);	371	static int req_invoke (aio_req req);
		372	static void req_destroy (aio_req req);
122	static void req_free (aio_req req);	373	static void req_cancel (aio_req req);
123		374
124	/* must be called at most once */	375	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	376	static SV *req_sv (aio_req req, const char *klass)
126	{	377	{
127	if (!req->self)	378	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	397	}
147		398
148	static void aio_grp_feed (aio_req grp)	399	static void aio_grp_feed (aio_req grp)
149	{	400	{
		401	block_sig ();
		402
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
151	{	404	{
152	int old_len = grp->length;	405	int old_len = grp->size;
153		406
154	if (grp->fh2 && SvOK (grp->fh2))	407	if (grp->sv2 && SvOK (grp->sv2))
155	{	408	{
156	dSP;	409	dSP;
157		410
158	ENTER;	411	ENTER;
159	SAVETMPS;	412	SAVETMPS;
160	PUSHMARK (SP);	413	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;	415	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);	416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
164	SPAGAIN;	417	SPAGAIN;
165	FREETMPS;	418	FREETMPS;
166	LEAVE;	419	LEAVE;
167	}	420	}
168		421
169	/* stop if no progress has been made */	422	/* stop if no progress has been made */
170	if (old_len == grp->length)	423	if (old_len == grp->size)
171	{	424	{
172	SvREFCNT_dec (grp->fh2);	425	SvREFCNT_dec (grp->sv2);
173	grp->fh2 = 0;	426	grp->sv2 = 0;
174	break;	427	break;
175	}	428	}
176	}	429	}
		430
		431	unblock_sig ();
177	}	432	}
178		433
179	static void aio_grp_dec (aio_req grp)	434	static void aio_grp_dec (aio_req grp)
180	{	435	{
181	--grp->length;	436	--grp->size;
182		437
183	/* call feeder, if applicable */	438	/* call feeder, if applicable */
184	aio_grp_feed (grp);	439	aio_grp_feed (grp);
185		440
186	/* finish, if done */	441	/* finish, if done */
187	if (!grp->length && grp->fd)	442	if (!grp->size && grp->int1)
188	{	443	{
		444	block_sig ();
		445
189	req_invoke (grp);	446	if (!req_invoke (grp))
		447	{
		448	req_destroy (grp);
		449	unblock_sig ();
		450	croak (0);
		451	}
		452
190	req_free (grp);	453	req_destroy (grp);
		454	unblock_sig ();
191	}	455	}
192	}	456	}
193		457
194	static void poll_wait ()	458	static int req_invoke (aio_req req)
195	{	459	{
196	fd_set rfd;	460	dSP;
197		461
198	while (nreqs)	462	if (req->flags & FLAG_SV2_RO_OFF)
		463	SvREADONLY_off (req->sv2);
		464
		465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
199	{	466	{
200	aio_req req;	467	ENTER;
201	pthread_mutex_lock (&reslock);	468	SAVETMPS;
202	req = ress;	469	PUSHMARK (SP);
203	pthread_mutex_unlock (&reslock);	470	EXTEND (SP, 1);
204		471
205	if (req)	472	switch (req->type)
206	return;	473	{
		474	case REQ_READDIR:
		475	{
		476	SV *rv = &PL_sv_undef;
207		477
208	FD_ZERO(&rfd);	478	if (req->result >= 0)
209	FD_SET(respipe [0], &rfd);	479	{
		480	int i;
		481	char *buf = req->ptr2;
		482	AV *av = newAV ();
210		483
211	select (respipe [0] + 1, &rfd, 0, 0, 0);	484	av_extend (av, req->result - 1);
		485
		486	for (i = 0; i < req->result; ++i)
		487	{
		488	SV *sv = newSVpv (buf, 0);
		489
		490	av_store (av, i, sv);
		491	buf += SvCUR (sv) + 1;
		492	}
		493
		494	rv = sv_2mortal (newRV_noinc ((SV *)av));
		495	}
		496
		497	PUSHs (rv);
		498	}
		499	break;
		500
		501	case REQ_OPEN:
		502	{
		503	/* convert fd to fh */
		504	SV *fh;
		505
		506	PUSHs (sv_2mortal (newSViv (req->result)));
		507	PUTBACK;
		508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		509	SPAGAIN;
		510
		511	fh = POPs;
		512	PUSHMARK (SP);
		513	XPUSHs (fh);
		514	}
		515	break;
		516
		517	case REQ_GROUP:
		518	req->int1 = 2; /* mark group as finished */
		519
		520	if (req->sv1)
		521	{
		522	int i;
		523	AV *av = (AV *)req->sv1;
		524
		525	EXTEND (SP, AvFILL (av) + 1);
		526	for (i = 0; i <= AvFILL (av); ++i)
		527	PUSHs (*av_fetch (av, i, 0));
		528	}
		529	break;
		530
		531	case REQ_NOP:
		532	case REQ_BUSY:
		533	break;
		534
		535	case REQ_READLINK:
		536	if (req->result > 0)
		537	{
		538	SvCUR_set (req->sv2, req->result);
		539	*SvEND (req->sv2) = 0;
		540	PUSHs (req->sv2);
		541	}
		542	break;
		543
		544	case REQ_STAT:
		545	case REQ_LSTAT:
		546	case REQ_FSTAT:
		547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		548	PL_laststatval = req->result;
		549	PL_statcache = *(Stat_t *)(req->ptr2);
		550	PUSHs (sv_2mortal (newSViv (req->result)));
		551	break;
		552
		553	case REQ_READ:
		554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		555	*SvEND (req->sv2) = 0;
		556	PUSHs (sv_2mortal (newSViv (req->result)));
		557	break;
		558
		559	default:
		560	PUSHs (sv_2mortal (newSViv (req->result)));
		561	break;
		562	}
		563
		564	errno = req->errorno;
		565
		566	PUTBACK;
		567	call_sv (req->callback, G_VOID | G_EVAL);
		568	SPAGAIN;
		569
		570	FREETMPS;
		571	LEAVE;
212	}	572	}
213	}
214		573
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)	574	if (req->grp)
317	{	575	{
318	aio_req grp = req->grp;	576	aio_req grp = req->grp;
319		577
320	/* unlink request */	578	/* unlink request */
…		…
325	grp->grp_first = req->grp_next;	583	grp->grp_first = req->grp_next;
326		584
327	aio_grp_dec (grp);	585	aio_grp_dec (grp);
328	}	586	}
329		587
		588	return !SvTRUE (ERRSV);
		589	}
		590
		591	static void req_destroy (aio_req req)
		592	{
330	if (req->self)	593	if (req->self)
331	{	594	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	595	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	596	SvREFCNT_dec (req->self);
334	}	597	}
335		598
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	599	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	600	SvREFCNT_dec (req->sv2);
339	SvREFCNT_dec (req->callback);	601	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341		602
342	if (req->type == REQ_READDIR && req->result >= 0)	603	if (req->flags & FLAG_PTR2_FREE)
343	free (req->data2ptr);	604	free (req->ptr2);
344		605
345	Safefree (req);	606	Safefree (req);
346	}	607	}
347		608
		609	static void req_cancel_subs (aio_req grp)
		610	{
		611	aio_req sub;
		612
		613	if (grp->type != REQ_GROUP)
		614	return;
		615
		616	SvREFCNT_dec (grp->sv2);
		617	grp->sv2 = 0;
		618
		619	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		620	req_cancel (sub);
		621	}
		622
348	static void req_cancel (aio_req req)	623	static void req_cancel (aio_req req)
349	{	624	{
350	req->flags |= FLAG_CANCELLED;	625	req->flags |= FLAG_CANCELLED;
351		626
352	if (req->type == REQ_GROUP)	627	req_cancel_subs (req);
		628	}
		629
		630	X_THREAD_PROC (aio_proc);
		631
		632	static void start_thread (void)
		633	{
		634	worker *wrk = calloc (1, sizeof (worker));
		635
		636	if (!wrk)
		637	croak ("unable to allocate worker thread data");
		638
		639	X_LOCK (wrklock);
		640
		641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
353	{	642	{
354	aio_req sub;	643	wrk->prev = &wrk_first;
		644	wrk->next = wrk_first.next;
		645	wrk_first.next->prev = wrk;
		646	wrk_first.next = wrk;
		647	++started;
		648	}
		649	else
		650	free (wrk);
355		651
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	652	X_UNLOCK (wrklock);
357	req_cancel (sub);	653	}
		654
		655	static void maybe_start_thread ()
		656	{
		657	if (get_nthreads () >= wanted)
		658	return;
		659
		660	/* todo: maybe use idle here, but might be less exact */
		661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		662	return;
		663
		664	start_thread ();
		665	}
		666
		667	static void req_send (aio_req req)
		668	{
		669	block_sig ();
		670
		671	++nreqs;
		672
		673	X_LOCK (reqlock);
		674	++nready;
		675	reqq_push (&req_queue, req);
		676	X_COND_SIGNAL (reqwait);
		677	X_UNLOCK (reqlock);
		678
		679	unblock_sig ();
		680
		681	maybe_start_thread ();
		682	}
		683
		684	static void end_thread (void)
		685	{
		686	aio_req req;
		687
		688	Newz (0, req, 1, aio_cb);
		689
		690	req->type = REQ_QUIT;
		691	req->pri = PRI_MAX + PRI_BIAS;
		692
		693	X_LOCK (reqlock);
		694	reqq_push (&req_queue, req);
		695	X_COND_SIGNAL (reqwait);
		696	X_UNLOCK (reqlock);
		697
		698	X_LOCK (wrklock);
		699	--started;
		700	X_UNLOCK (wrklock);
		701	}
		702
		703	static void set_max_idle (int nthreads)
		704	{
		705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		706	max_idle = nthreads <= 0 ? 1 : nthreads;
		707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		708	}
		709
		710	static void min_parallel (int nthreads)
		711	{
		712	if (wanted < nthreads)
		713	wanted = nthreads;
		714	}
		715
		716	static void max_parallel (int nthreads)
		717	{
		718	if (wanted > nthreads)
		719	wanted = nthreads;
		720
		721	while (started > wanted)
		722	end_thread ();
		723	}
		724
		725	static void poll_wait ()
		726	{
		727	fd_set rfd;
		728
		729	while (nreqs)
		730	{
		731	int size;
		732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		733	size = res_queue.size;
		734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		735
		736	if (size)
		737	return;
		738
		739	maybe_start_thread ();
		740
		741	FD_ZERO(&rfd);
		742	FD_SET(respipe [0], &rfd);
		743
		744	select (respipe [0] + 1, &rfd, 0, 0, 0);
358	}	745	}
359	}	746	}
360		747
361	static int poll_cb ()	748	static int poll_cb ()
362	{	749	{
363	dSP;	750	dSP;
364	int count = 0;	751	int count = 0;
		752	int maxreqs = max_poll_reqs;
365	int do_croak = 0;	753	int do_croak = 0;
		754	struct timeval tv_start, tv_now;
366	aio_req req;	755	aio_req req;
		756
		757	if (max_poll_time)
		758	gettimeofday (&tv_start, 0);
		759
		760	block_sig ();
367		761
368	for (;;)	762	for (;;)
369	{	763	{
370	pthread_mutex_lock (&reslock);	764	for (;;)
371	req = ress;
372
373	if (req)
374	{	765	{
375	ress = req->next;	766	maybe_start_thread ();
376		767
		768	X_LOCK (reslock);
		769	req = reqq_shift (&res_queue);
		770
377	if (!ress)	771	if (req)
378	{	772	{
		773	--npending;
		774
		775	if (!res_queue.size)
		776	{
379	/* read any signals sent by the worker threads */	777	/* read any signals sent by the worker threads */
380	char buf [32];	778	char buf [4];
381	while (read (respipe [0], buf, 32) == 32)	779	while (read (respipe [0], buf, 4) == 4)
		780	;
382	;	781	}
		782	}
383		783
		784	X_UNLOCK (reslock);
		785
		786	if (!req)
		787	break;
		788
		789	--nreqs;
		790
		791	if (req->type == REQ_GROUP && req->size)
		792	{
		793	req->int1 = 1; /* mark request as delayed */
		794	continue;
		795	}
		796	else
		797	{
		798	if (!req_invoke (req))
		799	{
		800	req_destroy (req);
		801	unblock_sig ();
		802	croak (0);
		803	}
		804
		805	count++;
		806	}
		807
		808	req_destroy (req);
		809
		810	if (maxreqs && !--maxreqs)
		811	break;
		812
		813	if (max_poll_time)
		814	{
		815	gettimeofday (&tv_now, 0);
		816
		817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
384	rese = 0;	818	break;
385	}	819	}
386	}	820	}
387		821
388	pthread_mutex_unlock (&reslock);	822	if (nreqs <= max_outstanding)
389
390	if (!req)
391	break;	823	break;
392		824
393	--nreqs;	825	poll_wait ();
394		826
395	if (req->type == REQ_QUIT)	827	++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	}	828	}
424		829
		830	unblock_sig ();
425	return count;	831	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	}	832	}
529		833
530	/*****************************************************************************/	834	/*****************************************************************************/
531	/* work around various missing functions */	835	/* work around various missing functions */
532		836
…		…
537	/*	841	/*
538	* make our pread/pwrite safe against themselves, but not against	842	* make our pread/pwrite safe against themselves, but not against
539	* normal read/write by using a mutex. slows down execution a lot,	843	* normal read/write by using a mutex. slows down execution a lot,
540	* but that's your problem, not mine.	844	* but that's your problem, not mine.
541	*/	845	*/
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	846	static mutex_t preadwritelock = X_MUTEX_INIT;
543		847
544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
545	{	849	{
546	ssize_t res;	850	ssize_t res;
547	off_t ooffset;	851	off_t ooffset;
548		852
549	pthread_mutex_lock (&preadwritelock);	853	X_LOCK (preadwritelock);
550	ooffset = lseek (fd, 0, SEEK_CUR);	854	ooffset = lseek (fd, 0, SEEK_CUR);
551	lseek (fd, offset, SEEK_SET);	855	lseek (fd, offset, SEEK_SET);
552	res = read (fd, buf, count);	856	res = read (fd, buf, count);
553	lseek (fd, ooffset, SEEK_SET);	857	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);	858	X_UNLOCK (preadwritelock);
555		859
556	return res;	860	return res;
557	}	861	}
558		862
559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
560	{	864	{
561	ssize_t res;	865	ssize_t res;
562	off_t ooffset;	866	off_t ooffset;
563		867
564	pthread_mutex_lock (&preadwritelock);	868	X_LOCK (preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);	869	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);	870	lseek (fd, offset, SEEK_SET);
567	res = write (fd, buf, count);	871	res = write (fd, buf, count);
568	lseek (fd, offset, SEEK_SET);	872	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);	873	X_UNLOCK (preadwritelock);
570		874
571	return res;	875	return res;
572	}	876	}
		877	#endif
		878
		879	#ifndef HAVE_FUTIMES
		880
		881	# define utimes(path,times) aio_utimes (path, times)
		882	# define futimes(fd,times) aio_futimes (fd, times)
		883
		884	int aio_utimes (const char *filename, const struct timeval times[2])
		885	{
		886	if (times)
		887	{
		888	struct utimbuf buf;
		889
		890	buf.actime = times[0].tv_sec;
		891	buf.modtime = times[1].tv_sec;
		892
		893	return utime (filename, &buf);
		894	}
		895	else
		896	return utime (filename, 0);
		897	}
		898
		899	int aio_futimes (int fd, const struct timeval tv[2])
		900	{
		901	errno = ENOSYS;
		902	return -1;
		903	}
		904
573	#endif	905	#endif
574		906
575	#if !HAVE_FDATASYNC	907	#if !HAVE_FDATASYNC
576	# define fdatasync fsync	908	# define fdatasync fsync
577	#endif	909	#endif
578		910
579	#if !HAVE_READAHEAD	911	#if !HAVE_READAHEAD
580	# define readahead aio_readahead	912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
581		913
582	static ssize_t readahead (int fd, off_t offset, size_t count)	914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
583	{	915	{
584	char readahead_buf[4096];	916	size_t todo = count;
		917	dBUF;
585		918
586	while (count > 0)	919	while (todo > 0)
587	{	920	{
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
589		922
590	pread (fd, readahead_buf, len, offset);	923	pread (fd, aio_buf, len, offset);
591	offset += len;	924	offset += len;
592	count -= len;	925	todo -= len;
593	}	926	}
594		927
595	errno = 0;	928	errno = 0;
		929	return count;
596	}	930	}
		931
597	#endif	932	#endif
598		933
599	#if !HAVE_READDIR_R	934	#if !HAVE_READDIR_R
600	# define readdir_r aio_readdir_r	935	# define readdir_r aio_readdir_r
601		936
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	937	static mutex_t readdirlock = X_MUTEX_INIT;
603		938
604	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
605	{	940	{
606	struct dirent *e;	941	X_DIRENT *e;
607	int errorno;	942	int errorno;
608		943
609	pthread_mutex_lock (&readdirlock);	944	X_LOCK (readdirlock);
610		945
611	e = readdir (dirp);	946	e = readdir (dirp);
612	errorno = errno;	947	errorno = errno;
613		948
614	if (e)	949	if (e)
…		…
617	strcpy (ent->d_name, e->d_name);	952	strcpy (ent->d_name, e->d_name);
618	}	953	}
619	else	954	else
620	*res = 0;	955	*res = 0;
621		956
622	pthread_mutex_unlock (&readdirlock);	957	X_UNLOCK (readdirlock);
623		958
624	errno = errorno;	959	errno = errorno;
625	return e ? 0 : -1;	960	return e ? 0 : -1;
626	}	961	}
627	#endif	962	#endif
628		963
629	/* sendfile always needs emulation */	964	/* sendfile always needs emulation */
630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
631	{	966	{
632	ssize_t res;	967	ssize_t res;
633		968
634	if (!count)	969	if (!count)
635	return 0;	970	return 0;
…		…
646	{	981	{
647	off_t sbytes;	982	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649		984
650	if (res < 0 && sbytes)	985	if (res < 0 && sbytes)
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
652	res = sbytes;	987	res = sbytes;
653	}	988	}
654		989
655	# elif __hpux	990	# elif __hpux
656	res = sendfile (ofd, ifd, offset, count, 0, 0);	991	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
684	#endif	1019	#endif
685	)	1020	)
686	)	1021	)
687	{	1022	{
688	/* emulate sendfile. this is a major pain in the ass */	1023	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];	1024	dBUF;
		1025
690	res = 0;	1026	res = 0;
691		1027
692	while (count)	1028	while (count)
693	{	1029	{
694	ssize_t cnt;	1030	ssize_t cnt;
695		1031
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
697		1033
698	if (cnt <= 0)	1034	if (cnt <= 0)
699	{	1035	{
700	if (cnt && !res) res = -1;	1036	if (cnt && !res) res = -1;
701	break;	1037	break;
702	}	1038	}
703		1039
704	cnt = write (ofd, buf, cnt);	1040	cnt = write (ofd, aio_buf, cnt);
705		1041
706	if (cnt <= 0)	1042	if (cnt <= 0)
707	{	1043	{
708	if (cnt && !res) res = -1;	1044	if (cnt && !res) res = -1;
709	break;	1045	break;
…		…
717		1053
718	return res;	1054	return res;
719	}	1055	}
720		1056
721	/* read a full directory */	1057	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)	1058	static void scandir_ (aio_req req, worker *self)
723	{	1059	{
724	DIR *dirp = opendir (path);	1060	DIR *dirp;
725	union	1061	union
726	{	1062	{
727	struct dirent d;	1063	X_DIRENT d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
729	} u;	1065	} *u;
730	struct dirent *entp;	1066	X_DIRENT *entp;
731	char *name, *names;	1067	char *name, *names;
732	int memlen = 4096;	1068	int memlen = 4096;
733	int memofs = 0;	1069	int memofs = 0;
734	int res = 0;	1070	int res = 0;
735	int errorno;
736		1071
737	if (!dirp)	1072	X_LOCK (wrklock);
738	return -1;	1073	self->dirp = dirp = opendir (req->ptr1);
739		1074	self->dbuf = u = malloc (sizeof (*u));
		1075	req->flags |= FLAG_PTR2_FREE;
740	names = malloc (memlen);	1076	req->ptr2 = names = malloc (memlen);
		1077	X_UNLOCK (wrklock);
		1078
		1079	if (dirp && u && names)
		1080	for (;;)
		1081	{
		1082	errno = 0;
		1083	readdir_r (dirp, &u->d, &entp);
		1084
		1085	if (!entp)
		1086	break;
		1087
		1088	name = entp->d_name;
		1089
		1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		1091	{
		1092	int len = strlen (name) + 1;
		1093
		1094	res++;
		1095
		1096	while (memofs + len > memlen)
		1097	{
		1098	memlen *= 2;
		1099	X_LOCK (wrklock);
		1100	req->ptr2 = names = realloc (names, memlen);
		1101	X_UNLOCK (wrklock);
		1102
		1103	if (!names)
		1104	break;
		1105	}
		1106
		1107	memcpy (names + memofs, name, len);
		1108	memofs += len;
		1109	}
		1110	}
		1111
		1112	if (errno)
		1113	res = -1;
		1114
		1115	req->result = res;
		1116	}
		1117
		1118	/*****************************************************************************/
		1119
		1120	X_THREAD_PROC (aio_proc)
		1121	{
		1122	{//D
		1123	aio_req req;
		1124	struct timespec ts;
		1125	worker *self = (worker *)thr_arg;
		1126
		1127	/* try to distribute timeouts somewhat randomly */
		1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
741		1129
742	for (;;)	1130	for (;;)
743	{	1131	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);	1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
745		1133
746	if (!entp)	1134	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		1135
795	for (;;)	1136	for (;;)
796	{	1137	{
797	req = reqs;	1138	self->req = req = reqq_shift (&req_queue);
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804		1139
805	if (req)	1140	if (req)
806	break;	1141	break;
807		1142
808	pthread_cond_wait (&reqwait, &reqlock);	1143	++idle;
		1144
		1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1146	== ETIMEDOUT)
		1147	{
		1148	if (idle > max_idle)
		1149	{
		1150	--idle;
		1151	X_UNLOCK (reqlock);
		1152	X_LOCK (wrklock);
		1153	--started;
		1154	X_UNLOCK (wrklock);
		1155	goto quit;
		1156	}
		1157
		1158	/* we are allowed to idle, so do so without any timeout */
		1159	X_COND_WAIT (reqwait, reqlock);
		1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1161	}
		1162
		1163	--idle;
809	}	1164	}
810		1165
811	pthread_mutex_unlock (&reqlock);	1166	--nready;
		1167
		1168	X_UNLOCK (reqlock);
812		1169
813	errno = 0; /* strictly unnecessary */	1170	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815		1171
816	if (!(req->flags & FLAG_CANCELLED))	1172	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)	1173	switch (req->type)
818	{	1174	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1175	case REQ_READ: req->result = req->offs >= 0
820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1176	? pread (req->int1, req->ptr1, req->size, req->offs)
		1177	: read (req->int1, req->ptr1, req->size); break;
		1178	case REQ_WRITE: req->result = req->offs >= 0
		1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1180	: write (req->int1, req->ptr1, req->size); break;
821		1181
822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1182	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;	1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
824		1184
825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1185	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;	1186	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;	1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
828		1188
		1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1195
829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
830	case REQ_CLOSE: req->result = close (req->fd); break;	1197	case REQ_CLOSE: req->result = close (req->int1); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
836		1206
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;	1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1209	case REQ_READDIR: scandir_ (req, self); break;
840		1210
841	case REQ_SLEEP:	1211	case REQ_BUSY:
		1212	#ifdef _WIN32
		1213	Sleep (req->nv1 * 1000.);
		1214	#else
842	{	1215	{
843	struct timeval tv;	1216	struct timeval tv;
844		1217
845	tv.tv_sec = req->fd;	1218	tv.tv_sec = req->nv1;
846	tv.tv_usec = req->fd2;	1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
847		1220
848	req->result = select (0, 0, 0, 0, &tv);	1221	req->result = select (0, 0, 0, 0, &tv);
849	}	1222	}
		1223	#endif
		1224	break;
		1225
		1226	case REQ_UTIME:
		1227	case REQ_FUTIME:
		1228	{
		1229	struct timeval tv[2];
		1230	struct timeval *times;
		1231
		1232	if (req->nv1 != -1. || req->nv2 != -1.)
		1233	{
		1234	tv[0].tv_sec = req->nv1;
		1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1236	tv[1].tv_sec = req->nv2;
		1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1238
		1239	times = tv;
		1240	}
		1241	else
		1242	times = 0;
		1243
		1244
		1245	req->result = req->type == REQ_FUTIME
		1246	? futimes (req->int1, times)
		1247	: utimes (req->ptr1, times);
		1248	}
850		1249
851	case REQ_GROUP:	1250	case REQ_GROUP:
852	case REQ_NOP:	1251	case REQ_NOP:
		1252	break;
		1253
853	case REQ_QUIT:	1254	case REQ_QUIT:
854	break;	1255	goto quit;
855		1256
856	default:	1257	default:
857	req->result = ENOSYS;	1258	req->result = -1;
858	break;	1259	break;
859	}	1260	}
860		1261
861	req->errorno = errno;	1262	req->errorno = errno;
862		1263
863	pthread_mutex_lock (&reslock);	1264	X_LOCK (reslock);
864		1265
865	req->next = 0;	1266	++npending;
866		1267
867	if (rese)	1268	if (!reqq_push (&res_queue, req))
868	{	1269	{
869	rese->next = req;
870	rese = req;
871	}
872	else
873	{
874	rese = ress = req;
875
876	/* write a dummy byte to the pipe so fh becomes ready */	1270	/* write a dummy byte to the pipe so fh becomes ready */
877	write (respipe [1], &respipe, 1);	1271	write (respipe [1], &respipe, 1);
		1272
		1273	/* optionally signal the main thread asynchronously */
		1274	if (main_sig)
		1275	pthread_kill (main_tid, main_sig);
878	}	1276	}
879		1277
880	pthread_mutex_unlock (&reslock);	1278	self->req = 0;
		1279	worker_clear (self);
		1280
		1281	X_UNLOCK (reslock);
881	}	1282	}
882	while (type != REQ_QUIT);	1283
		1284	quit:
		1285	X_LOCK (wrklock);
		1286	worker_free (self);
		1287	X_UNLOCK (wrklock);
883		1288
884	return 0;	1289	return 0;
		1290	}//D
885	}	1291	}
886		1292
887	/*****************************************************************************/	1293	/*****************************************************************************/
888		1294
889	static void atfork_prepare (void)	1295	static void atfork_prepare (void)
890	{	1296	{
891	pthread_mutex_lock (&reqlock);	1297	X_LOCK (wrklock);
892	pthread_mutex_lock (&reslock);	1298	X_LOCK (reqlock);
		1299	X_LOCK (reslock);
893	#if !HAVE_PREADWRITE	1300	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);	1301	X_LOCK (preadwritelock);
895	#endif	1302	#endif
896	#if !HAVE_READDIR_R	1303	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);	1304	X_LOCK (readdirlock);
898	#endif	1305	#endif
899	}	1306	}
900		1307
901	static void atfork_parent (void)	1308	static void atfork_parent (void)
902	{	1309	{
903	#if !HAVE_READDIR_R	1310	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);	1311	X_UNLOCK (readdirlock);
905	#endif	1312	#endif
906	#if !HAVE_PREADWRITE	1313	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);	1314	X_UNLOCK (preadwritelock);
908	#endif	1315	#endif
909	pthread_mutex_unlock (&reslock);	1316	X_UNLOCK (reslock);
910	pthread_mutex_unlock (&reqlock);	1317	X_UNLOCK (reqlock);
		1318	X_UNLOCK (wrklock);
911	}	1319	}
912		1320
913	static void atfork_child (void)	1321	static void atfork_child (void)
914	{	1322	{
915	aio_req prv;	1323	aio_req prv;
916		1324
917	started = 0;	1325	while (prv = reqq_shift (&req_queue))
		1326	req_destroy (prv);
918		1327
919	while (reqs)	1328	while (prv = reqq_shift (&res_queue))
		1329	req_destroy (prv);
		1330
		1331	while (wrk_first.next != &wrk_first)
920	{	1332	{
921	prv = reqs;	1333	worker *wrk = wrk_first.next;
922	reqs = prv->next;	1334
		1335	if (wrk->req)
		1336	req_destroy (wrk->req);
		1337
		1338	worker_clear (wrk);
923	req_free (prv);	1339	worker_free (wrk);
924	}	1340	}
925		1341
926	reqs = reqe = 0;	1342	started = 0;
927		1343	idle = 0;
928	while (ress)	1344	nreqs = 0;
929	{	1345	nready = 0;
930	prv = ress;	1346	npending = 0;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936		1347
937	close (respipe [0]);	1348	close (respipe [0]);
938	close (respipe [1]);	1349	close (respipe [1]);
939	create_pipe ();	1350
		1351	if (!create_pipe (respipe))
		1352	croak ("cannot set result pipe to nonblocking mode");
940		1353
941	atfork_parent ();	1354	atfork_parent ();
942	}	1355	}
943		1356
944	#define dREQ \	1357	#define dREQ \
…		…
967	PROTOTYPES: ENABLE	1380	PROTOTYPES: ENABLE
968		1381
969	BOOT:	1382	BOOT:
970	{	1383	{
971	HV *stash = gv_stashpv ("IO::AIO", 1);	1384	HV *stash = gv_stashpv ("IO::AIO", 1);
		1385
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1391	#ifdef _WIN32
		1392	X_MUTEX_CHECK (wrklock);
		1393	X_MUTEX_CHECK (reslock);
		1394	X_MUTEX_CHECK (reqlock);
		1395	X_MUTEX_CHECK (reqwait);
		1396	X_MUTEX_CHECK (preadwritelock);
		1397	X_MUTEX_CHECK (readdirlock);
		1398	#else
		1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1401	#endif
975		1402
976	create_pipe ();	1403	if (!create_pipe (respipe))
		1404	croak ("cannot set result pipe to nonblocking mode");
		1405
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
978	}	1407	}
979		1408
980	void	1409	void
981	min_parallel (nthreads)	1410	max_poll_reqs (int nreqs)
982	int nthreads
983	PROTOTYPE: $	1411	PROTOTYPE: $
		1412	CODE:
		1413	max_poll_reqs = nreqs;
984		1414
985	void	1415	void
986	max_parallel (nthreads)	1416	max_poll_time (double nseconds)
987	int nthreads
988	PROTOTYPE: $	1417	PROTOTYPE: $
		1418	CODE:
		1419	max_poll_time = nseconds * AIO_TICKS;
		1420
		1421	void
		1422	min_parallel (int nthreads)
		1423	PROTOTYPE: $
		1424
		1425	void
		1426	max_parallel (int nthreads)
		1427	PROTOTYPE: $
		1428
		1429	void
		1430	max_idle (int nthreads)
		1431	PROTOTYPE: $
		1432	CODE:
		1433	set_max_idle (nthreads);
989		1434
990	int	1435	int
991	max_outstanding (nreqs)	1436	max_outstanding (int maxreqs)
992	int nreqs	1437	PROTOTYPE: $
993	PROTOTYPE: $
994	CODE:	1438	CODE:
995	RETVAL = max_outstanding;	1439	RETVAL = max_outstanding;
996	max_outstanding = nreqs;	1440	max_outstanding = maxreqs;
		1441	OUTPUT:
		1442	RETVAL
997		1443
998	void	1444	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1445	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: $$$;$	1446	PROTOTYPE: $$$;$
1005	PPCODE:	1447	PPCODE:
1006	{	1448	{
1007	dREQ;	1449	dREQ;
1008		1450
1009	req->type = REQ_OPEN;	1451	req->type = REQ_OPEN;
1010	req->data = newSVsv (pathname);	1452	req->sv1 = newSVsv (pathname);
1011	req->dataptr = SvPVbyte_nolen (req->data);	1453	req->ptr1 = SvPVbyte_nolen (req->sv1);
1012	req->fd = flags;	1454	req->int1 = flags;
1013	req->mode = mode;	1455	req->mode = mode;
1014		1456
1015	REQ_SEND;	1457	REQ_SEND;
1016	}	1458	}
1017		1459
1018	void	1460	void
1019	aio_close (fh,callback=&PL_sv_undef)	1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$	1462	PROTOTYPE: $;$
1023	ALIAS:	1463	ALIAS:
1024	aio_close = REQ_CLOSE	1464	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC	1465	aio_fsync = REQ_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC	1466	aio_fdatasync = REQ_FDATASYNC
1027	PPCODE:	1467	PPCODE:
1028	{	1468	{
1029	dREQ;	1469	dREQ;
1030		1470
1031	req->type = ix;	1471	req->type = ix;
1032	req->fh = newSVsv (fh);	1472	req->sv1 = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1034		1474
1035	REQ_SEND (req);	1475	REQ_SEND (req);
1036	}	1476	}
1037		1477
1038	void	1478	void
1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1479	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:	1480	ALIAS:
1047	aio_read = REQ_READ	1481	aio_read = REQ_READ
1048	aio_write = REQ_WRITE	1482	aio_write = REQ_WRITE
1049	PROTOTYPE: $$$$$;$	1483	PROTOTYPE: $$$$$;$
1050	PPCODE:	1484	PPCODE:
1051	{	1485	{
1052	aio_req req;
1053	STRLEN svlen;	1486	STRLEN svlen;
1054	char *svptr = SvPVbyte (data, svlen);	1487	char *svptr = SvPVbyte (data, svlen);
		1488	UV len = SvUV (length);
1055		1489
1056	SvUPGRADE (data, SVt_PV);	1490	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);	1491	SvPOK_on (data);
1058		1492
1059	if (dataoffset < 0)	1493	if (dataoffset < 0)
1060	dataoffset += svlen;	1494	dataoffset += svlen;
1061		1495
1062	if (dataoffset < 0 || dataoffset > svlen)	1496	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	1497	croak ("dataoffset outside of data scalar");
1064		1498
1065	if (ix == REQ_WRITE)	1499	if (ix == REQ_WRITE)
1066	{	1500	{
1067	/* write: check length and adjust. */	1501	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	1502	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	1503	len = svlen - dataoffset;
1070	}	1504	}
1071	else	1505	else
1072	{	1506	{
1073	/* read: grow scalar as necessary */	1507	/* read: grow scalar as necessary */
1074	svptr = SvGROW (data, length + dataoffset);	1508	svptr = SvGROW (data, len + dataoffset + 1);
1075	}	1509	}
1076		1510
1077	if (length < 0)	1511	if (len < 0)
1078	croak ("length must not be negative");	1512	croak ("length must not be negative");
1079		1513
1080	{	1514	{
1081	dREQ;	1515	dREQ;
1082		1516
1083	req->type = ix;	1517	req->type = ix;
1084	req->fh = newSVsv (fh);	1518	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1086	: IoOFP (sv_2io (fh)));	1520	: IoOFP (sv_2io (fh)));
		1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	1522	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	1523	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	1524	req->ptr1 = (char *)svptr + dataoffset;
		1525	req->stroffset = dataoffset;
1091		1526
1092	if (!SvREADONLY (data))	1527	if (!SvREADONLY (data))
1093	{	1528	{
1094	SvREADONLY_on (data);	1529	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	1530	req->flags |= FLAG_SV2_RO_OFF;
1096	}	1531	}
1097		1532
1098	REQ_SEND;	1533	REQ_SEND;
1099	}	1534	}
1100	}	1535	}
1101		1536
1102	void	1537	void
		1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1539	PROTOTYPE: $$;$
		1540	PPCODE:
		1541	{
		1542	SV *data;
		1543	dREQ;
		1544
		1545	data = newSV (NAME_MAX);
		1546	SvPOK_on (data);
		1547
		1548	req->type = REQ_READLINK;
		1549	req->sv1 = newSVsv (path);
		1550	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1551	req->sv2 = data;
		1552	req->ptr1 = SvPVbyte_nolen (data);
		1553
		1554	REQ_SEND;
		1555	}
		1556
		1557	void
1103	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1558	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: $$$$;$	1559	PROTOTYPE: $$$$;$
1110	PPCODE:	1560	PPCODE:
1111	{	1561	{
1112	dREQ;	1562	dREQ;
1113		1563
1114	req->type = REQ_SENDFILE;	1564	req->type = REQ_SENDFILE;
1115	req->fh = newSVsv (out_fh);	1565	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1117	req->fh2 = newSVsv (in_fh);	1567	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1119	req->offset = in_offset;	1569	req->offs = SvVAL64 (in_offset);
1120	req->length = length;	1570	req->size = length;
1121		1571
1122	REQ_SEND;	1572	REQ_SEND;
1123	}	1573	}
1124		1574
1125	void	1575	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$	1577	PROTOTYPE: $$$;$
1132	PPCODE:	1578	PPCODE:
1133	{	1579	{
1134	dREQ;	1580	dREQ;
1135		1581
1136	req->type = REQ_READAHEAD;	1582	req->type = REQ_READAHEAD;
1137	req->fh = newSVsv (fh);	1583	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1139	req->offset = offset;	1585	req->offs = SvVAL64 (offset);
1140	req->length = length;	1586	req->size = length;
1141		1587
1142	REQ_SEND;	1588	REQ_SEND;
1143	}	1589	}
1144		1590
1145	void	1591	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	1593	ALIAS:
1150	aio_stat = REQ_STAT	1594	aio_stat = REQ_STAT
1151	aio_lstat = REQ_LSTAT	1595	aio_lstat = REQ_LSTAT
1152	PPCODE:	1596	PPCODE:
1153	{	1597	{
1154	dREQ;	1598	dREQ;
1155		1599
1156	New (0, req->statdata, 1, Stat_t);	1600	req->ptr2 = malloc (sizeof (Stat_t));
1157	if (!req->statdata)	1601	if (!req->ptr2)
1158	{	1602	{
1159	req_free (req);	1603	req_destroy (req);
1160	croak ("out of memory during aio_req->statdata allocation");	1604	croak ("out of memory during aio_stat statdata allocation");
1161	}	1605	}
		1606
		1607	req->flags |= FLAG_PTR2_FREE;
		1608	req->sv1 = newSVsv (fh_or_path);
1162		1609
1163	if (SvPOK (fh_or_path))	1610	if (SvPOK (fh_or_path))
1164	{	1611	{
1165	req->type = ix;	1612	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);	1613	req->ptr1 = SvPVbyte_nolen (req->sv1);
1168	}	1614	}
1169	else	1615	else
1170	{	1616	{
1171	req->type = REQ_FSTAT;	1617	req->type = REQ_FSTAT;
1172	req->fh = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1174	}	1619	}
1175		1620
1176	REQ_SEND;	1621	REQ_SEND;
1177	}	1622	}
1178		1623
1179	void	1624	void
		1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	dREQ;
		1629
		1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1632	req->sv1 = newSVsv (fh_or_path);
		1633
		1634	if (SvPOK (fh_or_path))
		1635	{
		1636	req->type = REQ_UTIME;
		1637	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1638	}
		1639	else
		1640	{
		1641	req->type = REQ_FUTIME;
		1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1643	}
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
		1649	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1650	PPCODE:
		1651	{
		1652	dREQ;
		1653
		1654	req->sv1 = newSVsv (fh_or_path);
		1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1656
		1657	if (SvPOK (fh_or_path))
		1658	{
		1659	req->type = REQ_TRUNCATE;
		1660	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1661	}
		1662	else
		1663	{
		1664	req->type = REQ_FTRUNCATE;
		1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1666	}
		1667
		1668	REQ_SEND;
		1669	}
		1670
		1671	void
		1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1673	PPCODE:
		1674	{
		1675	dREQ;
		1676
		1677	req->mode = mode;
		1678	req->sv1 = newSVsv (fh_or_path);
		1679
		1680	if (SvPOK (fh_or_path))
		1681	{
		1682	req->type = REQ_CHMOD;
		1683	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1684	}
		1685	else
		1686	{
		1687	req->type = REQ_FCHMOD;
		1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1689	}
		1690
		1691	REQ_SEND;
		1692	}
		1693
		1694	void
		1695	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1696	PPCODE:
		1697	{
		1698	dREQ;
		1699
		1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1702	req->sv1 = newSVsv (fh_or_path);
		1703
		1704	if (SvPOK (fh_or_path))
		1705	{
		1706	req->type = REQ_CHOWN;
		1707	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1708	}
		1709	else
		1710	{
		1711	req->type = REQ_FCHOWN;
		1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1713	}
		1714
		1715	REQ_SEND;
		1716	}
		1717
		1718	void
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1720	ALIAS:
1184	aio_unlink = REQ_UNLINK	1721	aio_unlink = REQ_UNLINK
1185	aio_rmdir = REQ_RMDIR	1722	aio_rmdir = REQ_RMDIR
1186	aio_readdir = REQ_READDIR	1723	aio_readdir = REQ_READDIR
1187	PPCODE:	1724	PPCODE:
1188	{	1725	{
1189	dREQ;	1726	dREQ;
1190		1727
1191	req->type = ix;	1728	req->type = ix;
1192	req->data = newSVsv (pathname);	1729	req->sv1 = newSVsv (pathname);
1193	req->dataptr = SvPVbyte_nolen (req->data);	1730	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1731
		1732	REQ_SEND;
		1733	}
		1734
		1735	void
		1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1737	PPCODE:
		1738	{
		1739	dREQ;
1194		1740
		1741	req->type = REQ_MKDIR;
		1742	req->sv1 = newSVsv (pathname);
		1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1744	req->mode = mode;
		1745
1195	REQ_SEND;	1746	REQ_SEND;
1196	}	1747	}
1197		1748
1198	void	1749	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:	1751	ALIAS:
1204	aio_link = REQ_LINK	1752	aio_link = REQ_LINK
1205	aio_symlink = REQ_SYMLINK	1753	aio_symlink = REQ_SYMLINK
1206	aio_rename = REQ_RENAME	1754	aio_rename = REQ_RENAME
1207	PPCODE:	1755	PPCODE:
1208	{	1756	{
1209	dREQ;	1757	dREQ;
1210		1758
1211	req->type = ix;	1759	req->type = ix;
1212	req->fh = newSVsv (oldpath);	1760	req->sv2 = newSVsv (oldpath);
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1761	req->ptr2 = SvPVbyte_nolen (req->sv2);
1214	req->data = newSVsv (newpath);	1762	req->sv1 = newSVsv (newpath);
1215	req->dataptr = SvPVbyte_nolen (req->data);	1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1216		1764
1217	REQ_SEND;	1765	REQ_SEND;
1218	}	1766	}
1219		1767
1220	void	1768	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1770	PPCODE:
1225	{	1771	{
1226	dREQ;	1772	dREQ;
1227		1773
1228	req->type = REQ_SLEEP;	1774	req->type = REQ_MKNOD;
1229	req->fd = delay < 0. ? 0 : delay;	1775	req->sv1 = newSVsv (pathname);
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1776	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1777	req->mode = (mode_t)mode;
		1778	req->offs = dev;
		1779
1232	REQ_SEND;	1780	REQ_SEND;
1233	}	1781	}
1234		1782
1235	void	1783	void
		1784	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1785	PPCODE:
		1786	{
		1787	dREQ;
		1788
		1789	req->type = REQ_BUSY;
		1790	req->nv1 = delay < 0. ? 0. : delay;
		1791
		1792	REQ_SEND;
		1793	}
		1794
		1795	void
1236	aio_group (callback=&PL_sv_undef)	1796	aio_group (SV *callback=&PL_sv_undef)
1237	SV * callback
1238	PROTOTYPE: ;$	1797	PROTOTYPE: ;$
1239	PPCODE:	1798	PPCODE:
1240	{	1799	{
1241	dREQ;	1800	dREQ;
1242		1801
1243	req->type = REQ_GROUP;	1802	req->type = REQ_GROUP;
		1803
1244	req_send (req);	1804	req_send (req);
1245
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1247	}	1806	}
1248		1807
1249	void	1808	void
1250	aio_nop (callback=&PL_sv_undef)	1809	aio_nop (SV *callback=&PL_sv_undef)
1251	SV * callback
1252	PPCODE:	1810	PPCODE:
1253	{	1811	{
1254	dREQ;	1812	dREQ;
1255		1813
1256	req->type = REQ_NOP;	1814	req->type = REQ_NOP;
1257		1815
1258	REQ_SEND;	1816	REQ_SEND;
1259	}	1817	}
1260		1818
1261	#if 0	1819	int
1262		1820	aioreq_pri (int pri = 0)
1263	void	1821	PROTOTYPE: ;$
1264	aio_pri (int pri = DEFAULT_PRI)
1265	CODE:	1822	CODE:
		1823	RETVAL = next_pri - PRI_BIAS;
		1824	if (items > 0)
		1825	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1826	if (pri < PRI_MIN) pri = PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1827	if (pri > PRI_MAX) pri = PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1828	next_pri = pri + PRI_BIAS;
		1829	}
		1830	OUTPUT:
		1831	RETVAL
1269		1832
1270	#endif	1833	void
		1834	aioreq_nice (int nice = 0)
		1835	CODE:
		1836	nice = next_pri - nice;
		1837	if (nice < PRI_MIN) nice = PRI_MIN;
		1838	if (nice > PRI_MAX) nice = PRI_MAX;
		1839	next_pri = nice + PRI_BIAS;
1271		1840
1272	void	1841	void
1273	flush ()	1842	flush ()
1274	PROTOTYPE:	1843	PROTOTYPE:
1275	CODE:	1844	CODE:
…		…
1277	{	1846	{
1278	poll_wait ();	1847	poll_wait ();
1279	poll_cb ();	1848	poll_cb ();
1280	}	1849	}
1281		1850
1282	void	1851	int
1283	poll()	1852	poll()
1284	PROTOTYPE:	1853	PROTOTYPE:
1285	CODE:	1854	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();	1855	poll_wait ();
1289	poll_cb ();	1856	RETVAL = poll_cb ();
1290	}	1857	OUTPUT:
		1858	RETVAL
1291		1859
1292	int	1860	int
1293	poll_fileno()	1861	poll_fileno()
1294	PROTOTYPE:	1862	PROTOTYPE:
1295	CODE:	1863	CODE:
…		…
1307		1875
1308	void	1876	void
1309	poll_wait()	1877	poll_wait()
1310	PROTOTYPE:	1878	PROTOTYPE:
1311	CODE:	1879	CODE:
1312	if (nreqs)
1313	poll_wait ();	1880	poll_wait ();
		1881
		1882	void
		1883	setsig (int signum = SIGIO)
		1884	PROTOTYPE: ;$
		1885	CODE:
		1886	{
		1887	if (block_sig_level)
		1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1889
		1890	X_LOCK (reslock);
		1891	main_tid = pthread_self ();
		1892	main_sig = signum;
		1893	X_UNLOCK (reslock);
		1894
		1895	if (main_sig && npending)
		1896	pthread_kill (main_tid, main_sig);
		1897	}
		1898
		1899	void
		1900	aio_block (SV *cb)
		1901	PROTOTYPE: &
		1902	PPCODE:
		1903	{
		1904	int count;
		1905
		1906	block_sig ();
		1907	PUSHMARK (SP);
		1908	PUTBACK;
		1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1910	SPAGAIN;
		1911	unblock_sig ();
		1912
		1913	if (SvTRUE (ERRSV))
		1914	croak (0);
		1915
		1916	XSRETURN (count);
		1917	}
1314		1918
1315	int	1919	int
1316	nreqs()	1920	nreqs()
1317	PROTOTYPE:	1921	PROTOTYPE:
1318	CODE:	1922	CODE:
1319	RETVAL = nreqs;	1923	RETVAL = nreqs;
1320	OUTPUT:	1924	OUTPUT:
1321	RETVAL	1925	RETVAL
1322		1926
		1927	int
		1928	nready()
		1929	PROTOTYPE:
		1930	CODE:
		1931	RETVAL = get_nready ();
		1932	OUTPUT:
		1933	RETVAL
		1934
		1935	int
		1936	npending()
		1937	PROTOTYPE:
		1938	CODE:
		1939	RETVAL = get_npending ();
		1940	OUTPUT:
		1941	RETVAL
		1942
		1943	int
		1944	nthreads()
		1945	PROTOTYPE:
		1946	CODE:
		1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1948	RETVAL = started;
		1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1950	OUTPUT:
		1951	RETVAL
		1952
1323	PROTOTYPES: DISABLE	1953	PROTOTYPES: DISABLE
1324		1954
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		1956
1327	void	1957	void
1328	cancel (aio_req_ornot req)	1958	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	1959	CODE:
1331	req_cancel (req);	1960	req_cancel (req);
1332		1961
1333	void	1962	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1343	PPCODE:	1972	PPCODE:
1344	{	1973	{
1345	int i;	1974	int i;
1346	aio_req req;	1975	aio_req req;
1347		1976
		1977	if (main_sig && !block_sig_level)
		1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1979
1348	if (grp->fd == 2)	1980	if (grp->int1 == 2)
1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1350		1982
1351	for (i = 1; i < items; ++i )	1983	for (i = 1; i < items; ++i )
1352	{	1984	{
1353	if (GIMME_V != G_VOID)	1985	if (GIMME_V != G_VOID)
…		…
1355		1987
1356	req = SvAIO_REQ (ST (i));	1988	req = SvAIO_REQ (ST (i));
1357		1989
1358	if (req)	1990	if (req)
1359	{	1991	{
1360	++grp->length;	1992	++grp->size;
1361	req->grp = grp;	1993	req->grp = grp;
1362		1994
1363	req->grp_prev = 0;	1995	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;	1996	req->grp_next = grp->grp_first;
1365		1997
…		…
1370	}	2002	}
1371	}	2003	}
1372	}	2004	}
1373		2005
1374	void	2006	void
		2007	cancel_subs (aio_req_ornot req)
		2008	CODE:
		2009	req_cancel_subs (req);
		2010
		2011	void
1375	result (aio_req grp, ...)	2012	result (aio_req grp, ...)
1376	CODE:	2013	CODE:
1377	{	2014	{
1378	int i;	2015	int i;
		2016	AV *av;
		2017
		2018	grp->errorno = errno;
		2019
1379	AV *av = newAV ();	2020	av = newAV ();
1380		2021
1381	for (i = 1; i < items; ++i )	2022	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	2023	av_push (av, newSVsv (ST (i)));
1383		2024
1384	SvREFCNT_dec (grp->data);	2025	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	2026	grp->sv1 = (SV *)av;
1386	}	2027	}
1387		2028
1388	void	2029	void
		2030	errno (aio_req grp, int errorno = errno)
		2031	CODE:
		2032	grp->errorno = errorno;
		2033
		2034	void
1389	feed_limit (aio_req grp, int limit)	2035	limit (aio_req grp, int limit)
1390	CODE:	2036	CODE:
1391	grp->fd2 = limit;	2037	grp->int2 = limit;
1392	aio_grp_feed (grp);	2038	aio_grp_feed (grp);
1393		2039
1394	void	2040	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	2041	feed (aio_req grp, SV *callback=&PL_sv_undef)
1396	CODE:	2042	CODE:
1397	{	2043	{
1398	SvREFCNT_dec (grp->fh2);	2044	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	2045	grp->sv2 = newSVsv (callback);
1400		2046
1401	if (grp->fd2 <= 0)	2047	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	2048	grp->int2 = 2;
1403		2049
1404	aio_grp_feed (grp);	2050	aio_grp_feed (grp);
1405	}	2051	}
1406		2052

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