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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.136 by root, Sun Apr 19 13:15:55 2009 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"
10
11	#include <stddef.h>	9	#include <stddef.h>
12	#include <stdlib.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	/* perl namespace pollution */
		19	#undef VERSION
		20
		21	#ifdef _WIN32
		22
		23	# define EIO_STRUCT_DIRENT Direntry_t
		24	# undef malloc
		25	# undef free
		26
		27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
		59	#else
		60
		61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
23	#include <utime.h>	64	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	65	# include <signal.h>
31	# elif __hpux	66	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	67
33	# elif __solaris /* not yet */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif
38	#endif	68	#endif
39		69
40	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
41	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
42		75
43	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		77
51	/* use NV for 32 bit perls as it allows larger offsets */	78	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	79	#if IVSIZE >= 8
53	# define SvVAL64 SvIV	80	# define SvVAL64 SvIV
54	#else	81	#else
55	# define SvVAL64 SvNV	82	# define SvVAL64 SvNV
56	#endif	83	#endif
57		84
58	#define dBUF \	85	/*****************************************************************************/
59	char *aio_buf; \
60	LOCK (wrklock); \
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
62	UNLOCK (wrklock); \
63	if (!aio_buf) \
64	return -1;
65		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	static HV *stash;
66	typedef SV SV8; /* byte-sv, used for argument-checking */	99	typedef SV SV8; /* byte-sv, used for argument-checking */
67
68	enum {
69	REQ_QUIT,
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		100
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		103
88	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;	105	SV *callback; \
93	SV *sv1, *sv2;	106	SV *sv1, *sv2; \
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;	107	STRLEN stroffset; \
101	int type;	108	SV *self;
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		109
106	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
107	unsigned char pri;
108		111
109	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
111	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
112		118
113	enum {	119	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};	121	};
118		122
		123	#include "libeio/eio.c"
		124
119	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
121		127
122	enum {	128	static SV *on_next_submit;
123	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
124	PRI_MAX = 4,	130	static int max_outstanding;
125		131
126	DEFAULT_PRI = 0,	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130		133
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	134	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	135	static void req_cancel (aio_req req);
		136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
331		150
332	/* must be called at most once */	151	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
334	{	153	{
335	if (!req->self)	154	if (!req->self)
…		…
353	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	173	}
355		174
356	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
357	{	176	{
358	block_sig ();	177	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	178	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	179	dSP;
367		180
368	ENTER;	181	ENTER;
369	SAVETMPS;	182	SAVETMPS;
370	PUSHMARK (SP);	183	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
372	PUTBACK;	185	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	187	SPAGAIN;
375	FREETMPS;	188	FREETMPS;
376	LEAVE;	189	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	190	}
387
388	unblock_sig ();
389	}	191	}
390		192
391	static void aio_grp_dec (aio_req grp)	193	static void req_submit (eio_req *req)
392	{	194	{
393	--grp->size;	195	eio_submit (req);
394		196
395	/* call feeder, if applicable */	197	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	198	{
401	block_sig ();	199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
402		201
403	if (!req_invoke (grp))	202	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		203
410	req_destroy (grp);	204	PUSHMARK (SP);
411	unblock_sig ();	205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
412	}	207	}
413	}	208	}
414		209
415	static int req_invoke (aio_req req)	210	static int req_invoke (eio_req *req)
416	{	211	{
417	dSP;	212	dSP;
418		213
419	if (req->flags & FLAG_SV2_RO_OFF)	214	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	215	SvREADONLY_off (req->sv2);
421		216
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	217	if (!EIO_CANCELLED (req) && req->callback)
423	{	218	{
424	ENTER;	219	ENTER;
425	SAVETMPS;	220	SAVETMPS;
426	PUSHMARK (SP);	221	PUSHMARK (SP);
427	EXTEND (SP, 1);	222	EXTEND (SP, 1);
428		223
429	switch (req->type)	224	switch (req->type)
430	{	225	{
431	case REQ_READDIR:	226	case EIO_READDIR:
432	{	227	{
433	SV *rv = &PL_sv_undef;	228	SV *rv = &PL_sv_undef;
434		229
435	if (req->result >= 0)	230	if (req->result >= 0)
436	{	231	{
…		…
453		248
454	PUSHs (rv);	249	PUSHs (rv);
455	}	250	}
456	break;	251	break;
457		252
458	case REQ_OPEN:	253	case EIO_OPEN:
459	{	254	{
460	/* convert fd to fh */	255	/* convert fd to fh */
461	SV *fh;	256	SV *fh = &PL_sv_undef;
462		257
463	PUSHs (sv_2mortal (newSViv (req->result)));	258	if (req->result >= 0)
464	PUTBACK;	259	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	260	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	261	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		262	char sym [64];
		263	int symlen;
		264
		265	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		266	gv_init (gv, stash, sym, symlen, 0);
467		267
468	fh = POPs;	268	symlen = snprintf (
469	PUSHMARK (SP);	269	sym,
		270	sizeof (sym),
		271	"%s&=%d",
		272	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		273	req->result
		274	);
		275
		276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		277	fh = (SV *)gv;
		278	}
		279
470	XPUSHs (fh);	280	PUSHs (fh);
471	}	281	}
472	break;	282	break;
473		283
474	case REQ_GROUP:	284	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	285	req->int1 = 2; /* mark group as finished */
476		286
477	if (req->sv1)	287	if (req->sv1)
478	{	288	{
479	int i;	289	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	293	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	294	PUSHs (*av_fetch (av, i, 0));
485	}	295	}
486	break;	296	break;
487		297
488	case REQ_NOP:	298	case EIO_NOP:
489	case REQ_BUSY:	299	case EIO_BUSY:
490	break;	300	break;
491		301
492	case REQ_READLINK:	302	case EIO_READLINK:
493	if (req->result > 0)	303	if (req->result > 0)
494	{	304	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
495	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);
498	}
499	break;	305	break;
500		306
501	case REQ_STAT:	307	case EIO_STAT:
502	case REQ_LSTAT:	308	case EIO_LSTAT:
503	case REQ_FSTAT:	309	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	311	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	313	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;	314	break;
509		315
510	case REQ_READ:	316	case EIO_READ:
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	317	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	318	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));	319	PUSHs (sv_2mortal (newSViv (req->result)));
514	break;	320	break;
515		321
		322	case EIO_DUP2:
		323	if (req->result > 0)
		324	req->result = 0;
		325	/* FALLTHROUGH */
		326
516	default:	327	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	328	PUSHs (sv_2mortal (newSViv (req->result)));
518	break;	329	break;
519	}	330	}
520		331
521	errno = req->errorno;	332	errno = req->errorno;
522		333
523	PUTBACK;	334	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	335	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	336	SPAGAIN;
526		337
527	FREETMPS;	338	FREETMPS;
528	LEAVE;	339	LEAVE;
		340
		341	PUTBACK;
529	}	342	}
530		343
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	344	return !!SvTRUE (ERRSV);
546	}	345	}
547		346
548	static void req_destroy (aio_req req)	347	static void req_destroy (aio_req req)
549	{	348	{
550	if (req->self)	349	if (req->self)
…		…
555		354
556	SvREFCNT_dec (req->sv1);	355	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	356	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	357	SvREFCNT_dec (req->callback);
559		358
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	359	Safefree (req);
564	}	360	}
565		361
566	static void req_cancel_subs (aio_req grp)	362	static void req_cancel_subs (aio_req grp)
567	{	363	{
568	aio_req sub;	364	aio_req sub;
569		365
570	if (grp->type != REQ_GROUP)	366	if (grp->type != EIO_GROUP)
571	return;	367	return;
572		368
573	SvREFCNT_dec (grp->sv2);	369	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	370	grp->sv2 = 0;
575		371
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	372	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	373	}
579		374
580	static void req_cancel (aio_req req)	375	#ifdef USE_SOCKETS_AS_HANDLES
581	{	376	# define TO_SOCKET(x) (win32_get_osfhandle (x))
582	req->flags |= FLAG_CANCELLED;	377	#else
		378	# define TO_SOCKET(x) (x)
		379	#endif
583		380
584	req_cancel_subs (req);	381	static void
585	}	382	create_respipe (void)
586
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{	383	{
591	worker *wrk = calloc (1, sizeof (worker));	384	int old_readfd = respipe [0];
592		385
593	if (!wrk)	386	if (respipe [1] >= 0)
594	croak ("unable to allocate worker thread data");	387	respipe_close (TO_SOCKET (respipe [1]));
595		388
596	LOCK (wrklock);	389	#ifdef _WIN32
		390	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		391	#else
		392	if (pipe (respipe))
		393	#endif
		394	croak ("unable to initialize result pipe");
597		395
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	396	if (old_readfd >= 0)
599	{	397	{
600	wrk->prev = &wrk_first;	398	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
601	wrk->next = wrk_first.next;	399	croak ("unable to initialize result pipe(2)");
602	wrk_first.next->prev = wrk;	400
603	wrk_first.next = wrk;	401	respipe_close (respipe [0]);
604	++started;	402	respipe [0] = old_readfd;
605	}	403	}
606	else
607	free (wrk);
608		404
609	UNLOCK (wrklock);	405	#ifdef _WIN32
610	}	406	int arg = 1;
		407	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		408	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		409	#else
		410	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		411	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		412	#endif
		413	croak ("unable to initialize result pipe(3)");
611		414
612	static void maybe_start_thread ()	415	respipe_osf [0] = TO_SOCKET (respipe [0]);
613	{	416	respipe_osf [1] = TO_SOCKET (respipe [1]);
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}	417	}
623		418
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	419	static void poll_wait (void)
683	{	420	{
684	fd_set rfd;	421	fd_set rfd;
685		422
686	while (nreqs)	423	while (eio_nreqs ())
687	{	424	{
688	int size;	425	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	426
		427	X_LOCK (reslock);
690	size = res_queue.size;	428	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	429	X_UNLOCK (reslock);
692		430
693	if (size)	431	if (size)
694	return;	432	return;
695		433
696	maybe_start_thread ();	434	etp_maybe_start_thread ();
697		435
698	FD_ZERO(&rfd);	436	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	437	FD_SET (respipe [0], &rfd);
700		438
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	440	}
703	}	441	}
704		442
705	static int poll_cb ()	443	static int poll_cb (void)
706	{	444	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)	445	for (;;)
720	{	446	{
721	for (;;)	447	int res = eio_poll ();
722	{
723	maybe_start_thread ();
724		448
725	LOCK (reslock);	449	if (res > 0)
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);	450	croak (0);
760	}
761		451
762	count++;	452	if (!max_outstanding || max_outstanding > eio_nreqs ())
763	}	453	return res;
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781		454
782	poll_wait ();	455	poll_wait ();
783
784	++maxreqs;
785	}	456	}
786
787	unblock_sig ();
788	return count;
789	}	457	}
790		458
791	static void create_pipe ()	459	static void atfork_child (void)
792	{	460	{
793	if (pipe (respipe))	461	create_respipe ();
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}	462	}
802		463
803	/*****************************************************************************/	464	static SV *
804	/* work around various missing functions */	465	get_cb (SV *cb_sv)
805
806	#if !HAVE_PREADWRITE
807	# define pread aio_pread
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{	466	{
819	ssize_t res;	467	HV *st;
820	off_t ooffset;	468	GV *gvp;
		469	CV *cv;
821		470
822	LOCK (preadwritelock);	471	if (!SvOK (cb_sv))
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;	472	return 0;
938		473
939	#if HAVE_SENDFILE	474	cv = sv_2cv (cb_sv, &st, &gvp, 0);
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942		475
943	# elif __freebsd	476	if (!cv)
944	/*	477	croak ("IO::AIO callback must be undef or a CODE reference");
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951		478
952	if (res < 0 && sbytes)	479	return (SV *)cv;
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085
1086	/*****************************************************************************/
1087
1088	static void *aio_proc (void *thr_arg)
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}	480	}
1314		481
1315	#define dREQ \	482	#define dREQ \
		483	SV *cb_cv; \
1316	aio_req req; \	484	aio_req req; \
1317	int req_pri = next_pri; \	485	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	486	next_pri = EIO_PRI_DEFAULT; \
1319	\	487	\
1320	if (SvOK (callback) && !SvROK (callback)) \	488	cb_cv = get_cb (callback); \
1321	croak ("callback must be undef or of reference type"); \
1322	\	489	\
1323	Newz (0, req, 1, aio_cb); \	490	Newz (0, req, 1, eio_req); \
1324	if (!req) \	491	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	492	croak ("out of memory during eio_req allocation"); \
1326	\	493	\
1327	req->callback = newSVsv (callback); \	494	req->callback = SvREFCNT_inc (cb_cv); \
1328	req->pri = req_pri	495	req->pri = req_pri
1329		496
1330	#define REQ_SEND \	497	#define REQ_SEND \
		498	PUTBACK; \
1331	req_send (req); \	499	req_submit (req); \
		500	SPAGAIN; \
1332	\	501	\
1333	if (GIMME_V != G_VOID) \	502	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	503	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335		504
		505	static int
		506	extract_fd (SV *fh, int wr)
		507	{
		508	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		509
		510	if (fd < 0)
		511	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		512
		513	return fd;
		514	}
		515
1336	MODULE = IO::AIO PACKAGE = IO::AIO	516	MODULE = IO::AIO PACKAGE = IO::AIO
1337		517
1338	PROTOTYPES: ENABLE	518	PROTOTYPES: ENABLE
1339		519
1340	BOOT:	520	BOOT:
1341	{	521	{
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	522	stash = gv_stashpv ("IO::AIO", 1);
1343		523
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	524	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	525	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	526	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	527	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	528	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		529	#ifndef _WIN32
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	530	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		531	#endif
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));	532	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		533	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		534	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		535	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
1351		536
1352	create_pipe ();	537	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	538
		539	if (eio_init (want_poll, done_poll) < 0)
		540	croak ("IO::AIO: unable to initialise eio library");
		541
		542	/* atfork child called in fifo order, so before eio's handler */
		543	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	544	}
1355		545
1356	void	546	void
1357	max_poll_reqs (int nreqs)	547	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	548	PROTOTYPE: $
1359	CODE:	549	CODE:
1360	max_poll_reqs = nreqs;	550	eio_set_max_poll_reqs (nreqs);
1361		551
1362	void	552	void
1363	max_poll_time (double nseconds)	553	max_poll_time (double nseconds)
1364	PROTOTYPE: $	554	PROTOTYPE: $
1365	CODE:	555	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	556	eio_set_max_poll_time (nseconds);
1367		557
1368	void	558	void
1369	min_parallel (int nthreads)	559	min_parallel (int nthreads)
1370	PROTOTYPE: $	560	PROTOTYPE: $
		561	CODE:
		562	eio_set_min_parallel (nthreads);
1371		563
1372	void	564	void
1373	max_parallel (int nthreads)	565	max_parallel (int nthreads)
1374	PROTOTYPE: $	566	PROTOTYPE: $
		567	CODE:
		568	eio_set_max_parallel (nthreads);
1375		569
1376	void	570	void
1377	max_idle (int nthreads)	571	max_idle (int nthreads)
1378	PROTOTYPE: $	572	PROTOTYPE: $
1379	CODE:	573	CODE:
1380	set_max_idle (nthreads);	574	eio_set_max_idle (nthreads);
1381		575
1382	int	576	void
1383	max_outstanding (int maxreqs)	577	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	578	PROTOTYPE: $
1385	CODE:	579	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	580	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		581
1391	void	582	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	583	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	584	PROTOTYPE: $$$;$
1394	PPCODE:	585	PPCODE:
1395	{	586	{
1396	dREQ;	587	dREQ;
1397		588
1398	req->type = REQ_OPEN;	589	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	590	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	591	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	592	req->int1 = flags;
1402	req->mode = mode;	593	req->int2 = mode;
1403		594
1404	REQ_SEND;	595	REQ_SEND;
		596	}
		597
		598	void
		599	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		600	PROTOTYPE: $;$
		601	ALIAS:
		602	aio_fsync = EIO_FSYNC
		603	aio_fdatasync = EIO_FDATASYNC
		604	PPCODE:
		605	{
		606	int fd = extract_fd (fh, 0);
		607	dREQ;
		608
		609	req->type = ix;
		610	req->sv1 = newSVsv (fh);
		611	req->int1 = fd;
		612
		613	REQ_SEND (req);
		614	}
		615
		616	void
		617	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		618	PROTOTYPE: $$$$;$
		619	PPCODE:
		620	{
		621	int fd = extract_fd (fh, 0);
		622	dREQ;
		623
		624	req->type = EIO_SYNC_FILE_RANGE;
		625	req->sv1 = newSVsv (fh);
		626	req->int1 = fd;
		627	req->offs = SvVAL64 (offset);
		628	req->size = SvVAL64 (nbytes);
		629	req->int2 = flags;
		630
		631	REQ_SEND (req);
1405	}	632	}
1406		633
1407	void	634	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	635	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	636	PROTOTYPE: $;$
1410	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC
1414	PPCODE:	637	PPCODE:
1415	{	638	{
		639	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		640	int fd = extract_fd (fh, 0);
1416	dREQ;	641	dREQ;
1417		642
		643	if (close_pipe < 0)
		644	{
		645	int pipefd [2];
		646
		647	if (pipe (pipefd) < 0
		648	|| close (pipefd [1]) < 0
		649	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		650	abort (); /*D*/
		651
		652	close_pipe = pipefd [0];
		653	}
		654
1418	req->type = ix;	655	req->type = EIO_DUP2;
		656	req->int1 = close_pipe;
1419	req->sv1 = newSVsv (fh);	657	req->sv2 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	658	req->int2 = fd;
1421		659
1422	REQ_SEND (req);	660	REQ_SEND (req);
1423	}	661	}
1424		662
1425	void	663	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	664	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:	665	ALIAS:
1428	aio_read = REQ_READ	666	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	667	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	668	PROTOTYPE: $$$$$;$
1431	PPCODE:	669	PPCODE:
1432	{	670	{
1433	STRLEN svlen;	671	STRLEN svlen;
1434	char *svptr = SvPVbyte (data, svlen);	672	char *svptr = SvPVbyte (data, svlen);
1435	UV len = SvUV (length);	673	UV len = SvUV (length);
		674	int fd;
		675
		676	if (SvTYPE (data) > SVt_PVMG)
		677	croak ("illegal data argument '%s', must be plain scalar string", SvPV_nolen (data));
1436		678
1437	SvUPGRADE (data, SVt_PV);	679	SvUPGRADE (data, SVt_PV);
1438	SvPOK_on (data);	680	SvPOK_only (data);
1439		681
1440	if (dataoffset < 0)	682	if (dataoffset < 0)
1441	dataoffset += svlen;	683	dataoffset += svlen;
1442		684
1443	if (dataoffset < 0 || dataoffset > svlen)	685	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	686	croak ("dataoffset outside of data scalar");
1445		687
1446	if (ix == REQ_WRITE)	688	if (ix == EIO_WRITE)
1447	{	689	{
1448	/* write: check length and adjust. */	690	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	691	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	692	len = svlen - dataoffset;
1451	}	693	}
…		…
1456	}	698	}
1457		699
1458	if (len < 0)	700	if (len < 0)
1459	croak ("length must not be negative");	701	croak ("length must not be negative");
1460		702
		703	fd = extract_fd (fh, ix == EIO_WRITE);
		704
1461	{	705	{
1462	dREQ;	706	dREQ;
1463		707
1464	req->type = ix;	708	req->type = ix;
1465	req->sv1 = newSVsv (fh);	709	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	710	req->int1 = fd;
1467	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	711	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	712	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	713	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	714	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	715	req->stroffset = dataoffset;
1473		716
1474	if (!SvREADONLY (data))	717	if (!SvREADONLY (data))
1475	{	718	{
1476	SvREADONLY_on (data);	719	SvREADONLY_on (data);
…		…
1487	PPCODE:	730	PPCODE:
1488	{	731	{
1489	SV *data;	732	SV *data;
1490	dREQ;	733	dREQ;
1491		734
1492	data = newSV (NAME_MAX);
1493	SvPOK_on (data);
1494
1495	req->type = REQ_READLINK;	735	req->type = EIO_READLINK;
1496	req->sv1 = newSVsv (path);	736	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);
1500		738
1501	REQ_SEND;	739	REQ_SEND;
1502	}	740	}
1503		741
1504	void	742	void
1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	743	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$$;$	744	PROTOTYPE: $$$$;$
1507	PPCODE:	745	PPCODE:
1508	{	746	{
		747	int ifd = extract_fd (in_fh , 0);
		748	int ofd = extract_fd (out_fh, 0);
1509	dREQ;	749	dREQ;
1510		750
1511	req->type = REQ_SENDFILE;	751	req->type = EIO_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);	752	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	753	req->int1 = ofd;
1514	req->sv2 = newSVsv (in_fh);	754	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	755	req->int2 = ifd;
1516	req->offs = SvVAL64 (in_offset);	756	req->offs = SvVAL64 (in_offset);
1517	req->size = length;	757	req->size = length;
1518		758
1519	REQ_SEND;	759	REQ_SEND;
1520	}	760	}
…		…
1522	void	762	void
1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	763	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $$$;$	764	PROTOTYPE: $$$;$
1525	PPCODE:	765	PPCODE:
1526	{	766	{
		767	int fd = extract_fd (fh, 0);
1527	dREQ;	768	dREQ;
1528		769
1529	req->type = REQ_READAHEAD;	770	req->type = EIO_READAHEAD;
1530	req->sv1 = newSVsv (fh);	771	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	772	req->int1 = fd;
1532	req->offs = SvVAL64 (offset);	773	req->offs = SvVAL64 (offset);
1533	req->size = length;	774	req->size = length;
1534		775
1535	REQ_SEND;	776	REQ_SEND;
1536	}	777	}
1537		778
1538	void	779	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	780	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:	781	ALIAS:
1541	aio_stat = REQ_STAT	782	aio_stat = EIO_STAT
1542	aio_lstat = REQ_LSTAT	783	aio_lstat = EIO_LSTAT
1543	PPCODE:	784	PPCODE:
1544	{	785	{
1545	dREQ;	786	dREQ;
1546		787
1547	req->ptr2 = malloc (sizeof (Stat_t));
1548	if (!req->ptr2)
1549	{
1550	req_destroy (req);
1551	croak ("out of memory during aio_stat statdata allocation");
1552	}
1553
1554	req->flags |= FLAG_PTR2_FREE;
1555	req->sv1 = newSVsv (fh_or_path);	788	req->sv1 = newSVsv (fh_or_path);
1556		789
1557	if (SvPOK (fh_or_path))	790	if (SvPOK (req->sv1))
1558	{	791	{
1559	req->type = ix;	792	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);	793	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	794	}
1562	else	795	else
1563	{	796	{
1564	req->type = REQ_FSTAT;	797	req->type = EIO_FSTAT;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	798	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1566	}	799	}
1567		800
1568	REQ_SEND;	801	REQ_SEND;
1569	}	802	}
…		…
1576		809
1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	810	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	811	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	812	req->sv1 = newSVsv (fh_or_path);
1580		813
1581	if (SvPOK (fh_or_path))	814	if (SvPOK (req->sv1))
1582	{	815	{
1583	req->type = REQ_UTIME;	816	req->type = EIO_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);	817	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}	818	}
1586	else	819	else
1587	{	820	{
1588	req->type = REQ_FUTIME;	821	req->type = EIO_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}	823	}
1591		824
1592	REQ_SEND;	825	REQ_SEND;
1593	}	826	}
1594		827
1595	void	828	void
		829	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->sv1 = newSVsv (fh_or_path);
		835	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		836
		837	if (SvPOK (req->sv1))
		838	{
		839	req->type = EIO_TRUNCATE;
		840	req->ptr1 = SvPVbyte_nolen (req->sv1);
		841	}
		842	else
		843	{
		844	req->type = EIO_FTRUNCATE;
		845	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		846	}
		847
		848	REQ_SEND;
		849	}
		850
		851	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	852	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		853	ALIAS:
		854	aio_chmod = EIO_CHMOD
		855	aio_mkdir = EIO_MKDIR
1597	PPCODE:	856	PPCODE:
1598	{	857	{
1599	dREQ;	858	dREQ;
1600		859
1601	req->mode = mode;	860	req->int2 = mode;
1602	req->sv1 = newSVsv (fh_or_path);	861	req->sv1 = newSVsv (fh_or_path);
1603		862
1604	if (SvPOK (fh_or_path))	863	if (SvPOK (req->sv1))
1605	{	864	{
1606	req->type = REQ_CHMOD;	865	req->type = ix;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);	866	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}	867	}
1609	else	868	else
1610	{	869	{
1611	req->type = REQ_FCHMOD;	870	req->type = EIO_FCHMOD;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	871	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}	872	}
1614		873
1615	REQ_SEND;	874	REQ_SEND;
1616	}	875	}
…		…
1623		882
1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	883	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	884	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	885	req->sv1 = newSVsv (fh_or_path);
1627		886
1628	if (SvPOK (fh_or_path))	887	if (SvPOK (req->sv1))
1629	{	888	{
1630	req->type = REQ_CHOWN;	889	req->type = EIO_CHOWN;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);	890	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}	891	}
1633	else	892	else
1634	{	893	{
1635	req->type = REQ_FCHOWN;	894	req->type = EIO_FCHOWN;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	895	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}	896	}
1638		897
1639	REQ_SEND;	898	REQ_SEND;
1640	}	899	}
1641		900
1642	void	901	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	902	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1644	ALIAS:	903	ALIAS:
1645	aio_unlink = REQ_UNLINK	904	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	905	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	906	aio_readdir = EIO_READDIR
1648	PPCODE:	907	PPCODE:
1649	{	908	{
1650	dREQ;	909	dREQ;
1651		910
1652	req->type = ix;	911	req->type = ix;
…		…
1655		914
1656	REQ_SEND;	915	REQ_SEND;
1657	}	916	}
1658		917
1659	void	918	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	919	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		920	ALIAS:
		921	aio_link = EIO_LINK
		922	aio_symlink = EIO_SYMLINK
		923	aio_rename = EIO_RENAME
1661	PPCODE:	924	PPCODE:
1662	{	925	{
1663	dREQ;	926	dREQ;
1664		927
		928	req->type = ix;
		929	req->sv1 = newSVsv (oldpath);
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	req->sv2 = newSVsv (newpath);
		932	req->ptr2 = SvPVbyte_nolen (req->sv2);
		933
		934	REQ_SEND;
		935	}
		936
		937	void
		938	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		939	PPCODE:
		940	{
		941	dREQ;
		942
1665	req->type = REQ_MKDIR;	943	req->type = EIO_MKNOD;
1666	req->sv1 = newSVsv (pathname);	944	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);	945	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_link = REQ_LINK
1677	aio_symlink = REQ_SYMLINK
1678	aio_rename = REQ_RENAME
1679	PPCODE:
1680	{
1681	dREQ;
1682
1683	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1686	req->sv1 = newSVsv (newpath);
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688
1689	REQ_SEND;
1690	}
1691
1692	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1694	PPCODE:
1695	{
1696	dREQ;
1697
1698	req->type = REQ_MKNOD;
1699	req->sv1 = newSVsv (pathname);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
1701	req->mode = (mode_t)mode;	946	req->int2 = (mode_t)mode;
1702	req->offs = dev;	947	req->offs = dev;
1703		948
1704	REQ_SEND;	949	REQ_SEND;
1705	}	950	}
1706		951
…		…
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	953	aio_busy (double delay, SV *callback=&PL_sv_undef)
1709	PPCODE:	954	PPCODE:
1710	{	955	{
1711	dREQ;	956	dREQ;
1712		957
1713	req->type = REQ_BUSY;	958	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	959	req->nv1 = delay < 0. ? 0. : delay;
1715		960
1716	REQ_SEND;	961	REQ_SEND;
1717	}	962	}
1718		963
…		…
1721	PROTOTYPE: ;$	966	PROTOTYPE: ;$
1722	PPCODE:	967	PPCODE:
1723	{	968	{
1724	dREQ;	969	dREQ;
1725		970
1726	req->type = REQ_GROUP;	971	req->type = EIO_GROUP;
1727		972
1728	req_send (req);	973	req_submit (req);
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	974	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1730	}	975	}
1731		976
1732	void	977	void
1733	aio_nop (SV *callback=&PL_sv_undef)	978	aio_nop (SV *callback=&PL_sv_undef)
		979	ALIAS:
		980	aio_nop = EIO_NOP
		981	aio_sync = EIO_SYNC
1734	PPCODE:	982	PPCODE:
1735	{	983	{
1736	dREQ;	984	dREQ;
1737		985
1738	req->type = REQ_NOP;	986	req->type = ix;
1739		987
1740	REQ_SEND;	988	REQ_SEND;
1741	}	989	}
1742		990
1743	int	991	int
1744	aioreq_pri (int pri = 0)	992	aioreq_pri (int pri = 0)
1745	PROTOTYPE: ;$	993	PROTOTYPE: ;$
1746	CODE:	994	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	995	RETVAL = next_pri;
1748	if (items > 0)	996	if (items > 0)
1749	{	997	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	998	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	999	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	1000	next_pri = pri;
1753	}	1001	}
1754	OUTPUT:	1002	OUTPUT:
1755	RETVAL	1003	RETVAL
1756		1004
1757	void	1005	void
1758	aioreq_nice (int nice = 0)	1006	aioreq_nice (int nice = 0)
1759	CODE:	1007	CODE:
1760	nice = next_pri - nice;	1008	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	1009	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	1010	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	1011	next_pri = nice;
1764		1012
1765	void	1013	void
1766	flush ()	1014	flush ()
1767	PROTOTYPE:	1015	PROTOTYPE:
1768	CODE:	1016	CODE:
1769	while (nreqs)	1017	while (eio_nreqs ())
1770	{	1018	{
1771	poll_wait ();	1019	poll_wait ();
1772	poll_cb ();	1020	poll_cb ();
1773	}	1021	}
1774		1022
…		…
1801	poll_wait()	1049	poll_wait()
1802	PROTOTYPE:	1050	PROTOTYPE:
1803	CODE:	1051	CODE:
1804	poll_wait ();	1052	poll_wait ();
1805		1053
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	1054	int
1844	nreqs()	1055	nreqs()
1845	PROTOTYPE:	1056	PROTOTYPE:
1846	CODE:	1057	CODE:
1847	RETVAL = nreqs;	1058	RETVAL = eio_nreqs ();
1848	OUTPUT:	1059	OUTPUT:
1849	RETVAL	1060	RETVAL
1850		1061
1851	int	1062	int
1852	nready()	1063	nready()
1853	PROTOTYPE:	1064	PROTOTYPE:
1854	CODE:	1065	CODE:
1855	RETVAL = get_nready ();	1066	RETVAL = eio_nready ();
1856	OUTPUT:	1067	OUTPUT:
1857	RETVAL	1068	RETVAL
1858		1069
1859	int	1070	int
1860	npending()	1071	npending()
1861	PROTOTYPE:	1072	PROTOTYPE:
1862	CODE:	1073	CODE:
1863	RETVAL = get_npending ();	1074	RETVAL = eio_npending ();
1864	OUTPUT:	1075	OUTPUT:
1865	RETVAL	1076	RETVAL
1866		1077
1867	int	1078	int
1868	nthreads()	1079	nthreads()
1869	PROTOTYPE:	1080	PROTOTYPE:
1870	CODE:	1081	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1082	RETVAL = eio_nthreads ();
1872	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874	OUTPUT:	1083	OUTPUT:
1875	RETVAL	1084	RETVAL
1876		1085
		1086	void _on_next_submit (SV *cb)
		1087	CODE:
		1088	SvREFCNT_dec (on_next_submit);
		1089	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1090
1877	PROTOTYPES: DISABLE	1091	PROTOTYPES: DISABLE
1878		1092
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1093	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		1094
1881	void	1095	void
1882	cancel (aio_req_ornot req)	1096	cancel (aio_req_ornot req)
1883	CODE:	1097	CODE:
1884	req_cancel (req);	1098	eio_cancel (req);
1885		1099
1886	void	1100	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1101	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1888	CODE:	1102	PPCODE:
		1103	{
		1104	if (GIMME_V != G_VOID)
		1105	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1106
		1107	if (items > 1)
		1108	{
		1109	SV *cb_cv = get_cb (callback);
		1110
1889	SvREFCNT_dec (req->callback);	1111	SvREFCNT_dec (req->callback);
1890	req->callback = newSVsv (callback);	1112	req->callback = SvREFCNT_inc (cb_cv);
		1113	}
		1114	}
1891		1115
1892	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1116	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893		1117
1894	void	1118	void
1895	add (aio_req grp, ...)	1119	add (aio_req grp, ...)
1896	PPCODE:	1120	PPCODE:
1897	{	1121	{
1898	int i;	1122	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		1123
1904	if (grp->int1 == 2)	1124	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1125	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		1126
1907	for (i = 1; i < items; ++i )	1127	for (i = 1; i < items; ++i )
1908	{	1128	{
		1129	aio_req req;
		1130
1909	if (GIMME_V != G_VOID)	1131	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1132	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		1133
1912	req = SvAIO_REQ (ST (i));	1134	req = SvAIO_REQ (ST (i));
1913		1135
1914	if (req)	1136	if (req)
1915	{	1137	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	1138	}
1928	}	1139	}
1929		1140
1930	void	1141	void
1931	cancel_subs (aio_req_ornot req)	1142	cancel_subs (aio_req_ornot req)
…		…
1956	grp->errorno = errorno;	1167	grp->errorno = errorno;
1957		1168
1958	void	1169	void
1959	limit (aio_req grp, int limit)	1170	limit (aio_req grp, int limit)
1960	CODE:	1171	CODE:
1961	grp->int2 = limit;	1172	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		1173
1964	void	1174	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	1175	feed (aio_req grp, SV *callback=&PL_sv_undef)
1966	CODE:	1176	CODE:
1967	{	1177	{
1968	SvREFCNT_dec (grp->sv2);	1178	SvREFCNT_dec (grp->sv2);
1969	grp->sv2 = newSVsv (callback);	1179	grp->sv2 = newSVsv (callback);
		1180	grp->feed = aio_grp_feed;
1970		1181
1971	if (grp->int2 <= 0)	1182	if (grp->int2 <= 0)
1972	grp->int2 = 2;	1183	grp->int2 = 2;
1973		1184
1974	aio_grp_feed (grp);	1185	eio_grp_limit (grp, grp->int2);
1975	}	1186	}
1976		1187

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