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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC vs.
Revision 1.146 by root, Fri Jun 12 17:07:00 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
22	#include <stdlib.h>	10	#include <stdlib.h>
23	#include <errno.h>	11	#include <errno.h>
24	#include <sys/time.h>
25	#include <sys/select.h>
26	#include <sys/types.h>	12	#include <sys/types.h>
27	#include <sys/stat.h>	13	#include <sys/stat.h>
28	#include <limits.h>	14	#include <limits.h>
29	#include <unistd.h>
30	#include <fcntl.h>	15	#include <fcntl.h>
31	#include <signal.h>
32	#include <sched.h>	16	#include <sched.h>
33		17
34	#if HAVE_SENDFILE	18	/* perl namespace pollution */
35	# if __linux	19	#undef VERSION
36	# include <sys/sendfile.h>	20
37	# elif __freebsd	21	#ifdef _WIN32
38	# include <sys/socket.h>	22
39	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
40	# elif __hpux	24	# undef malloc
41	# include <sys/socket.h>	25	# undef free
42	# elif __solaris /* not yet */	26
43	# include <sys/sendfile.h>	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
44	# else	59	#else
45	# error sendfile support requested but not available	60
46	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
47	#endif	68	#endif
48		69
49	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
50	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
51		75
52	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
53	#ifndef NAME_MAX	77
54	# define NAME_MAX 4096	78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
55	#endif	83	#endif
56		84
57	#ifndef PTHREAD_STACK_MIN	85	/*****************************************************************************/
58	/* care for broken platforms, e.g. windows */	86
59	# define PTHREAD_STACK_MIN 16384	87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
60	#endif	91	#endif
61		92
62	#if __ia64	93	#define expect_false(expr) expect ((expr) != 0, 0)
63	# define STACKSIZE 65536	94	#define expect_true(expr) expect ((expr) != 0, 1)
64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65	# define STACKSIZE PTHREAD_STACK_MIN
66	#else
67	# define STACKSIZE 16384
68	#endif
69		95
70	/* wether word reads are potentially non-atomic.	96	/*****************************************************************************/
71	* this is conservatice, likely most arches this runs
72	* on have atomic word read/writes.
73	*/
74	#ifndef WORDACCESS_UNSAFE
75	# if __i386 || __x86_64
76	# define WORDACCESS_UNSAFE 0
77	# else
78	# define WORDACCESS_UNSAFE 1
79	# endif
80	#endif
81		97
82	/* buffer size for various temporary buffers */	98	static HV *stash;
83	#define AIO_BUFSIZE 65536
84
85	#define dBUF \
86	char *aio_buf; \
87	LOCK (wrklock); \
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
89	UNLOCK (wrklock); \
90	if (!aio_buf) \
91	return -1;
92
93	typedef SV SV8; /* byte-sv, used for argument-checking */	99	typedef SV SV8; /* byte-sv, used for argument-checking */
94
95	enum {
96	REQ_QUIT,
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};
108		100
109	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
111		103
112	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
113	{
114	struct aio_cb *volatile next;
115
116	SV *callback, *fh;	105	SV *callback; \
117	SV *sv1, *sv2;	106	SV *sv1, *sv2; \
118	void *ptr1, *ptr2;
119	off_t offs;
120	size_t size;
121	ssize_t result;
122
123	STRLEN stroffset;	107	STRLEN stroffset; \
124	int type;	108	SV *self;
125	int int1, int2;
126	int errorno;
127	mode_t mode; /* open */
128		109
129	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
130	unsigned char pri;
131		111
132	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
134	} 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)
135		118
136	enum {	119	enum {
137	FLAG_CANCELLED = 0x01, /* request was cancelled */
138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140	};	121	};
141		122
		123	#include "libeio/eio.c"
		124
142	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
144		127
145	enum {	128	static SV *on_next_submit;
146	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	130	static int max_outstanding;
148		131
149	DEFAULT_PRI = 0,	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		133
154	#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156	static unsigned int max_poll_time = 0;
157	static unsigned int max_poll_reqs = 0;
158
159	/* calculcate time difference in ~1/AIO_TICKS of a second */
160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161	{
162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
164	}
165
166	static pthread_t main_tid;
167	static int main_sig;
168	static int block_sig_level;
169
170	void block_sig ()
171	{
172	sigset_t ss;
173
174	if (block_sig_level++)
175	return;
176
177	if (!main_sig)
178	return;
179
180	sigemptyset (&ss);
181	sigaddset (&ss, main_sig);
182	pthread_sigmask (SIG_BLOCK, &ss, 0);
183	}
184
185	void unblock_sig ()
186	{
187	sigset_t ss;
188
189	if (--block_sig_level)
190	return;
191
192	if (!main_sig)
193	return;
194
195	sigemptyset (&ss);
196	sigaddset (&ss, main_sig);
197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198	}
199
200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202	static unsigned int started, idle, wanted;
203
204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206	#else
207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208	#endif
209
210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213	/* worker threads management */
214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216	typedef struct worker {
217	/* locked by wrklock */
218	struct worker *prev, *next;
219
220	pthread_t tid;
221
222	/* locked by reslock, reqlock or wrklock */
223	aio_req req; /* currently processed request */
224	void *dbuf;
225	DIR *dirp;
226	} worker;
227
228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230	static void worker_clear (worker *wrk)
231	{
232	if (wrk->dirp)
233	{
234	closedir (wrk->dirp);
235	wrk->dirp = 0;
236	}
237
238	if (wrk->dbuf)
239	{
240	free (wrk->dbuf);
241	wrk->dbuf = 0;
242	}
243	}
244
245	static void worker_free (worker *wrk)
246	{
247	wrk->next->prev = wrk->prev;
248	wrk->prev->next = wrk->next;
249
250	free (wrk);
251	}
252
253	static volatile unsigned int nreqs, nready, npending;
254	static volatile unsigned int max_idle = 4;
255	static volatile unsigned int max_outstanding = 0xffffffff;
256	static int respipe [2];
257
258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262	#if WORDACCESS_UNSAFE
263
264	static unsigned int get_nready ()
265	{
266	unsigned int retval;
267
268	LOCK (reqlock);
269	retval = nready;
270	UNLOCK (reqlock);
271
272	return retval;
273	}
274
275	static unsigned int get_npending ()
276	{
277	unsigned int retval;
278
279	LOCK (reslock);
280	retval = npending;
281	UNLOCK (reslock);
282
283	return retval;
284	}
285
286	static unsigned int get_nthreads ()
287	{
288	unsigned int retval;
289
290	LOCK (wrklock);
291	retval = started;
292	UNLOCK (wrklock);
293
294	return retval;
295	}
296
297	#else
298
299	# define get_nready() nready
300	# define get_npending() npending
301	# define get_nthreads() started
302
303	#endif
304
305	/*
306	* a somewhat faster data structure might be nice, but
307	* with 8 priorities this actually needs <20 insns
308	* per shift, the most expensive operation.
309	*/
310	typedef struct {
311	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312	int size;
313	} reqq;
314
315	static reqq req_queue;
316	static reqq res_queue;
317
318	int reqq_push (reqq *q, aio_req req)
319	{
320	int pri = req->pri;
321	req->next = 0;
322
323	if (q->qe[pri])
324	{
325	q->qe[pri]->next = req;
326	q->qe[pri] = req;
327	}
328	else
329	q->qe[pri] = q->qs[pri] = req;
330
331	return q->size++;
332	}
333
334	aio_req reqq_shift (reqq *q)
335	{
336	int pri;
337
338	if (!q->size)
339	return 0;
340
341	--q->size;
342
343	for (pri = NUM_PRI; pri--; )
344	{
345	aio_req req = q->qs[pri];
346
347	if (req)
348	{
349	if (!(q->qs[pri] = req->next))
350	q->qe[pri] = 0;
351
352	return req;
353	}
354	}
355
356	abort ();
357	}
358
359	static int poll_cb ();
360	static int req_invoke (aio_req req);
361	static void req_free (aio_req req);	134	static void req_destroy (aio_req req);
362	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	}
363		150
364	/* must be called at most once */	151	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
366	{	153	{
367	if (!req->self)	154	if (!req->self)
…		…
385	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	173	}
387		174
388	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
389	{	176	{
390	block_sig ();	177	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	178	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	179	dSP;
399		180
400	ENTER;	181	ENTER;
401	SAVETMPS;	182	SAVETMPS;
402	PUSHMARK (SP);	183	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
404	PUTBACK;	185	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	187	SPAGAIN;
407	FREETMPS;	188	FREETMPS;
408	LEAVE;	189	LEAVE;
409	}
410
411	/* stop if no progress has been made */
412	if (old_len == grp->size)
413	{
414	SvREFCNT_dec (grp->sv2);
415	grp->sv2 = 0;
416	break;
417	}
418	}	190	}
419
420	unblock_sig ();
421	}	191	}
422		192
423	static void aio_grp_dec (aio_req grp)	193	static void req_submit (eio_req *req)
424	{	194	{
425	--grp->size;	195	eio_submit (req);
426		196
427	/* call feeder, if applicable */	197	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	198	{
433	block_sig ();	199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
434		201
435	if (!req_invoke (grp))	202	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		203
442	req_free (grp);	204	PUSHMARK (SP);
443	unblock_sig ();	205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
444	}	207	}
445	}	208	}
446		209
447	static int req_invoke (aio_req req)	210	static int req_invoke (eio_req *req)
448	{	211	{
449	dSP;	212	dSP;
450		213
451	if (req->flags & FLAG_SV1_RO_OFF)	214	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	215	SvREADONLY_off (req->sv2);
453		216
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	217	if (!EIO_CANCELLED (req) && req->callback)
455	{	218	{
456	ENTER;	219	ENTER;
457	SAVETMPS;	220	SAVETMPS;
458	PUSHMARK (SP);	221	PUSHMARK (SP);
459	EXTEND (SP, 1);	222	EXTEND (SP, 1);
460		223
461	switch (req->type)	224	switch (req->type)
462	{	225	{
463	case REQ_READDIR:	226	case EIO_READDIR:
464	{	227	{
465	SV *rv = &PL_sv_undef;	228	SV *rv = &PL_sv_undef;
466		229
467	if (req->result >= 0)	230	if (req->result >= 0)
468	{	231	{
…		…
472		235
473	av_extend (av, req->result - 1);	236	av_extend (av, req->result - 1);
474		237
475	for (i = 0; i < req->result; ++i)	238	for (i = 0; i < req->result; ++i)
476	{	239	{
		240	if (req->int1 & EIO_READDIR_DENTS)
		241	{
		242	eio_dirent *ent = (eio_dirent *)buf;
		243	SV *namesv = newSVpvn (ent->name, ent->namelen);
		244
		245	if (req->int1 & EIO_READDIR_CUSTOM2)
		246	{
		247	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		248	AV *avent = newAV ();
		249
		250	av_extend (avent, 2);
		251
		252	if (!sv_type [ent->type])
		253	{
		254	sv_type [ent->type] = newSViv (ent->type);
		255	SvREADONLY_on (sv_type [ent->type]);
		256	}
		257
		258	av_store (avent, 0, namesv);
		259	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		260	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		261
		262	av_store (av, i, newRV_noinc ((SV *)avent));
		263	}
		264	else
		265	av_store (av, i, namesv);
		266
		267	buf += sizeof (eio_dirent);
		268	}
		269	else
		270	{
477	SV *sv = newSVpv (buf, 0);	271	SV *name = newSVpv (buf, 0);
478
479	av_store (av, i, sv);	272	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	273	buf += SvCUR (name) + 1;
		274	}
481	}	275	}
482		276
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	277	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	278	}
485		279
486	PUSHs (rv);	280	PUSHs (rv);
		281
		282	if (req->int1 & EIO_READDIR_CUSTOM1)
		283	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	284	}
488	break;	285	break;
489		286
490	case REQ_OPEN:	287	case EIO_OPEN:
491	{	288	{
492	/* convert fd to fh */	289	/* convert fd to fh */
493	SV *fh;	290	SV *fh = &PL_sv_undef;
494		291
495	PUSHs (sv_2mortal (newSViv (req->result)));	292	if (req->result >= 0)
496	PUTBACK;	293	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	294	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	295	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		296	char sym [64];
		297	int symlen;
		298
		299	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		300	gv_init (gv, stash, sym, symlen, 0);
499		301
500	fh = POPs;	302	symlen = snprintf (
501	PUSHMARK (SP);	303	sym,
		304	sizeof (sym),
		305	"%s&=%d",
		306	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		307	(int)req->result
		308	);
		309
		310	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		311	fh = (SV *)gv;
		312	}
		313
502	XPUSHs (fh);	314	PUSHs (fh);
503	}	315	}
504	break;	316	break;
505		317
506	case REQ_GROUP:	318	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	319	req->int1 = 2; /* mark group as finished */
508		320
509	if (req->sv1)	321	if (req->sv1)
510	{	322	{
511	int i;	323	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	327	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	328	PUSHs (*av_fetch (av, i, 0));
517	}	329	}
518	break;	330	break;
519		331
520	case REQ_NOP:	332	case EIO_NOP:
521	case REQ_BUSY:	333	case EIO_BUSY:
522	break;	334	break;
523		335
524	case REQ_READLINK:	336	case EIO_READLINK:
525	if (req->result > 0)	337	if (req->result > 0)
526	{	338	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
527	SvCUR_set (req->sv1, req->result);
528	*SvEND (req->sv1) = 0;
529	PUSHs (req->sv1);
530	}
531	break;	339	break;
532		340
533	case REQ_STAT:	341	case EIO_STAT:
534	case REQ_LSTAT:	342	case EIO_LSTAT:
535	case REQ_FSTAT:	343	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	344	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	345	PL_laststatval = req->result;
538	PL_statcache = *(Stat_t *)(req->ptr2);	346	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	347	PUSHs (sv_2mortal (newSViv (req->result)));
540	break;	348	break;
541		349
542	case REQ_READ:	350	case EIO_READ:
		351	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	352	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	353	*SvEND (req->sv2) = 0;
		354	SvPOK_only (req->sv2);
		355	SvSETMAGIC (req->sv2);
545	PUSHs (sv_2mortal (newSViv (req->result)));	356	PUSHs (sv_2mortal (newSViv (req->result)));
		357	}
546	break;	358	break;
		359
		360	case EIO_DUP2:
		361	if (req->result > 0)
		362	req->result = 0;
		363	/* FALLTHROUGH */
547		364
548	default:	365	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	366	PUSHs (sv_2mortal (newSViv (req->result)));
550	break;	367	break;
551	}	368	}
552		369
553	errno = req->errorno;	370	errno = req->errorno;
554		371
555	PUTBACK;	372	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	374	SPAGAIN;
558		375
559	FREETMPS;	376	FREETMPS;
560	LEAVE;	377	LEAVE;
		378
		379	PUTBACK;
561	}	380	}
562		381
563	if (req->grp)
564	{
565	aio_req grp = req->grp;
566
567	/* unlink request */
568	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571	if (grp->grp_first == req)
572	grp->grp_first = req->grp_next;
573
574	aio_grp_dec (grp);
575	}
576
577	return !SvTRUE (ERRSV);	382	return !!SvTRUE (ERRSV);
578	}	383	}
579		384
580	static void req_free (aio_req req)	385	static void req_destroy (aio_req req)
581	{	386	{
582	if (req->self)	387	if (req->self)
583	{	388	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	389	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	390	SvREFCNT_dec (req->self);
586	}	391	}
587		392
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	393	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	394	SvREFCNT_dec (req->sv2);
591	SvREFCNT_dec (req->callback);	395	SvREFCNT_dec (req->callback);
592		396
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	397	Safefree (req);
597	}	398	}
598		399
599	static void req_cancel_subs (aio_req grp)	400	static void req_cancel_subs (aio_req grp)
600	{	401	{
601	aio_req sub;	402	aio_req sub;
602		403
603	if (grp->type != REQ_GROUP)	404	if (grp->type != EIO_GROUP)
604	return;	405	return;
605		406
606	SvREFCNT_dec (grp->sv2);	407	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	408	grp->sv2 = 0;
608		409
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	410	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	411	}
612		412
613	static void req_cancel (aio_req req)	413	#ifdef USE_SOCKETS_AS_HANDLES
614	{	414	# define TO_SOCKET(x) (win32_get_osfhandle (x))
615	req->flags |= FLAG_CANCELLED;	415	#else
616		416	# define TO_SOCKET(x) (x)
617	req_cancel_subs (req);
618	}
619
620	static void *aio_proc(void *arg);
621
622	static void start_thread (void)
623	{
624	sigset_t fullsigset, oldsigset;
625	pthread_attr_t attr;
626
627	worker *wrk = calloc (1, sizeof (worker));
628
629	if (!wrk)
630	croak ("unable to allocate worker thread data");
631
632	pthread_attr_init (&attr);
633	pthread_attr_setstacksize (&attr, STACKSIZE);
634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635	#ifdef PTHREAD_SCOPE_PROCESS
636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637	#endif	417	#endif
638		418
639	sigfillset (&fullsigset);	419	static void
		420	create_respipe (void)
		421	{
		422	int old_readfd = respipe [0];
640		423
641	LOCK (wrklock);	424	if (respipe [1] >= 0)
642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);	425	respipe_close (TO_SOCKET (respipe [1]));
643		426
644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	427	#ifdef _WIN32
		428	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		429	#else
		430	if (pipe (respipe))
		431	#endif
		432	croak ("unable to initialize result pipe");
		433
		434	if (old_readfd >= 0)
645	{	435	{
646	wrk->prev = &wrk_first;	436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
647	wrk->next = wrk_first.next;	437	croak ("unable to initialize result pipe(2)");
648	wrk_first.next->prev = wrk;	438
649	wrk_first.next = wrk;	439	respipe_close (respipe [0]);
650	++started;	440	respipe [0] = old_readfd;
651	}	441	}
652	else
653	free (wrk);
654		442
655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);	443	#ifdef _WIN32
656	UNLOCK (wrklock);	444	int arg = 1;
657	}	445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		447	#else
		448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
658		452
659	static void maybe_start_thread ()	453	respipe_osf [0] = TO_SOCKET (respipe [0]);
660	{	454	respipe_osf [1] = TO_SOCKET (respipe [1]);
661	if (get_nthreads () >= wanted)
662	return;
663
664	/* todo: maybe use idle here, but might be less exact */
665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666	return;
667
668	start_thread ();
669	}	455	}
670		456
671	static void req_send (aio_req req)
672	{
673	block_sig ();
674
675	++nreqs;
676
677	LOCK (reqlock);
678	++nready;
679	reqq_push (&req_queue, req);
680	pthread_cond_signal (&reqwait);
681	UNLOCK (reqlock);
682
683	unblock_sig ();
684
685	maybe_start_thread ();
686	}
687
688	static void end_thread (void)
689	{
690	aio_req req;
691
692	Newz (0, req, 1, aio_cb);
693
694	req->type = REQ_QUIT;
695	req->pri = PRI_MAX + PRI_BIAS;
696
697	LOCK (reqlock);
698	reqq_push (&req_queue, req);
699	pthread_cond_signal (&reqwait);
700	UNLOCK (reqlock);
701
702	LOCK (wrklock);
703	--started;
704	UNLOCK (wrklock);
705	}
706
707	static void set_max_idle (int nthreads)
708	{
709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
710	max_idle = nthreads <= 0 ? 1 : nthreads;
711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712	}
713
714	static void min_parallel (int nthreads)
715	{
716	if (wanted < nthreads)
717	wanted = nthreads;
718	}
719
720	static void max_parallel (int nthreads)
721	{
722	if (wanted > nthreads)
723	wanted = nthreads;
724
725	while (started > wanted)
726	end_thread ();
727	}
728
729	static void poll_wait ()	457	static void poll_wait (void)
730	{	458	{
731	fd_set rfd;	459	fd_set rfd;
732		460
733	while (nreqs)	461	while (eio_nreqs ())
734	{	462	{
735	int size;	463	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	464
		465	X_LOCK (reslock);
737	size = res_queue.size;	466	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	467	X_UNLOCK (reslock);
739		468
740	if (size)	469	if (size)
741	return;	470	return;
742		471
743	maybe_start_thread ();	472	etp_maybe_start_thread ();
744		473
745	FD_ZERO(&rfd);	474	FD_ZERO (&rfd);
746	FD_SET(respipe [0], &rfd);	475	FD_SET (respipe [0], &rfd);
747		476
748	select (respipe [0] + 1, &rfd, 0, 0, 0);	477	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	478	}
750	}	479	}
751		480
752	static int poll_cb ()	481	static int poll_cb (void)
753	{	482	{
754	dSP;
755	int count = 0;
756	int maxreqs = max_poll_reqs;
757	int do_croak = 0;
758	struct timeval tv_start, tv_now;
759	aio_req req;
760
761	if (max_poll_time)
762	gettimeofday (&tv_start, 0);
763
764	block_sig ();
765
766	for (;;)	483	for (;;)
767	{	484	{
768	for (;;)	485	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		486
772	LOCK (reslock);	487	if (res > 0)
773	req = reqq_shift (&res_queue);
774
775	if (req)
776	{
777	--npending;
778
779	if (!res_queue.size)
780	{
781	/* read any signals sent by the worker threads */
782	char buf [4];
783	while (read (respipe [0], buf, 4) == 4)
784	;
785	}
786	}
787
788	UNLOCK (reslock);
789
790	if (!req)
791	break;
792
793	--nreqs;
794
795	if (req->type == REQ_GROUP && req->size)
796	{
797	req->int1 = 1; /* mark request as delayed */
798	continue;
799	}
800	else
801	{
802	if (!req_invoke (req))
803	{
804	req_free (req);
805	unblock_sig ();
806	croak (0);	488	croak (0);
807	}
808		489
809	count++;	490	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	491	return res;
811
812	req_free (req);
813
814	if (maxreqs && !--maxreqs)
815	break;
816
817	if (max_poll_time)
818	{
819	gettimeofday (&tv_now, 0);
820
821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822	break;
823	}
824	}
825
826	if (nreqs <= max_outstanding)
827	break;
828		492
829	poll_wait ();	493	poll_wait ();
830
831	++maxreqs;
832	}	494	}
833
834	unblock_sig ();
835	return count;
836	}	495	}
837		496
838	static void create_pipe ()	497	static void atfork_child (void)
839	{	498	{
840	if (pipe (respipe))	499	create_respipe ();
841	croak ("unable to initialize result pipe");
842
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844	croak ("cannot set result pipe to nonblocking mode");
845
846	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847	croak ("cannot set result pipe to nonblocking mode");
848	}	500	}
849		501
850	/*****************************************************************************/	502	static SV *
851	/* work around various missing functions */	503	get_cb (SV *cb_sv)
852
853	#if !HAVE_PREADWRITE
854	# define pread aio_pread
855	# define pwrite aio_pwrite
856
857	/*
858	* make our pread/pwrite safe against themselves, but not against
859	* normal read/write by using a mutex. slows down execution a lot,
860	* but that's your problem, not mine.
861	*/
862	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865	{	504	{
866	ssize_t res;	505	HV *st;
867	off_t ooffset;	506	GV *gvp;
		507	CV *cv;
868		508
869	LOCK (preadwritelock);	509	if (!SvOK (cb_sv))
870	ooffset = lseek (fd, 0, SEEK_CUR);
871	lseek (fd, offset, SEEK_SET);
872	res = read (fd, buf, count);
873	lseek (fd, ooffset, SEEK_SET);
874	UNLOCK (preadwritelock);
875
876	return res;
877	}
878
879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
880	{
881	ssize_t res;
882	off_t ooffset;
883
884	LOCK (preadwritelock);
885	ooffset = lseek (fd, 0, SEEK_CUR);
886	lseek (fd, offset, SEEK_SET);
887	res = write (fd, buf, count);
888	lseek (fd, offset, SEEK_SET);
889	UNLOCK (preadwritelock);
890
891	return res;
892	}
893	#endif
894
895	#if !HAVE_FDATASYNC
896	# define fdatasync fsync
897	#endif
898
899	#if !HAVE_READAHEAD
900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901
902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
903	{
904	dBUF;
905
906	while (count > 0)
907	{
908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909
910	pread (fd, aio_buf, len, offset);
911	offset += len;
912	count -= len;
913	}
914
915	errno = 0;
916	}
917
918	#endif
919
920	#if !HAVE_READDIR_R
921	# define readdir_r aio_readdir_r
922
923	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926	{
927	struct dirent *e;
928	int errorno;
929
930	LOCK (readdirlock);
931
932	e = readdir (dirp);
933	errorno = errno;
934
935	if (e)
936	{
937	*res = ent;
938	strcpy (ent->d_name, e->d_name);
939	}
940	else
941	*res = 0;
942
943	UNLOCK (readdirlock);
944
945	errno = errorno;
946	return e ? 0 : -1;
947	}
948	#endif
949
950	/* sendfile always needs emulation */
951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
952	{
953	ssize_t res;
954
955	if (!count)
956	return 0;	510	return 0;
957		511
958	#if HAVE_SENDFILE	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
959	# if __linux
960	res = sendfile (ofd, ifd, &offset, count);
961		513
962	# elif __freebsd	514	if (!cv)
963	/*	515	croak ("IO::AIO callback must be undef or a CODE reference");
964	* Of course, the freebsd sendfile is a dire hack with no thoughts
965	* wasted on making it similar to other I/O functions.
966	*/
967	{
968	off_t sbytes;
969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970		516
971	if (res < 0 && sbytes)	517	return (SV *)cv;
972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
973	res = sbytes;
974	}
975
976	# elif __hpux
977	res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979	# elif __solaris
980	{
981	struct sendfilevec vec;
982	size_t sbytes;
983
984	vec.sfv_fd = ifd;
985	vec.sfv_flag = 0;
986	vec.sfv_off = offset;
987	vec.sfv_len = count;
988
989	res = sendfilev (ofd, &vec, 1, &sbytes);
990
991	if (res < 0 && sbytes)
992	res = sbytes;
993	}
994
995	# endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000
1001	if (res < 0
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003	#if __solaris
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011
1012	res = 0;
1013
1014	while (count)
1015	{
1016	ssize_t cnt;
1017
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020	if (cnt <= 0)
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025
1026	cnt = write (ofd, aio_buf, cnt);
1027
1028	if (cnt <= 0)
1029	{
1030	if (cnt && !res) res = -1;
1031	break;
1032	}
1033
1034	offset += cnt;
1035	res += cnt;
1036	count -= cnt;
1037	}
1038	}
1039
1040	return res;
1041	}
1042
1043	/* read a full directory */
1044	static void scandir_ (aio_req req, worker *self)
1045	{
1046	DIR *dirp;
1047	union
1048	{
1049	struct dirent d;
1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051	} *u;
1052	struct dirent *entp;
1053	char *name, *names;
1054	int memlen = 4096;
1055	int memofs = 0;
1056	int res = 0;
1057	int errorno;
1058
1059	LOCK (wrklock);
1060	self->dirp = dirp = opendir (req->ptr1);
1061	self->dbuf = u = malloc (sizeof (*u));
1062	req->flags |= FLAG_PTR2_FREE;
1063	req->ptr2 = names = malloc (memlen);
1064	UNLOCK (wrklock);
1065
1066	if (dirp && u && names)
1067	for (;;)
1068	{
1069	errno = 0;
1070	readdir_r (dirp, &u->d, &entp);
1071
1072	if (!entp)
1073	break;
1074
1075	name = entp->d_name;
1076
1077	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078	{
1079	int len = strlen (name) + 1;
1080
1081	res++;
1082
1083	while (memofs + len > memlen)
1084	{
1085	memlen *= 2;
1086	LOCK (wrklock);
1087	req->ptr2 = names = realloc (names, memlen);
1088	UNLOCK (wrklock);
1089
1090	if (!names)
1091	break;
1092	}
1093
1094	memcpy (names + memofs, name, len);
1095	memofs += len;
1096	}
1097	}
1098
1099	if (errno)
1100	res = -1;
1101
1102	req->result = res;
1103	}
1104
1105	/*****************************************************************************/
1106
1107	static void *aio_proc (void *thr_arg)
1108	{
1109	aio_req req;
1110	struct timespec ts;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1182
1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
1185	case REQ_READDIR: scandir_ (req, self); break;
1186
1187	case REQ_BUSY:
1188	{
1189	struct timeval tv;
1190
1191	tv.tv_sec = req->int1;
1192	tv.tv_usec = req->int2;
1193
1194	req->result = select (0, 0, 0, 0, &tv);
1195	}
1196
1197	case REQ_GROUP:
1198	case REQ_NOP:
1199	break;
1200
1201	case REQ_QUIT:
1202	goto quit;
1203
1204	default:
1205	req->result = ENOSYS;
1206	break;
1207	}
1208
1209	req->errorno = errno;
1210
1211	LOCK (reslock);
1212
1213	++npending;
1214
1215	if (!reqq_push (&res_queue, req))
1216	{
1217	/* write a dummy byte to the pipe so fh becomes ready */
1218	write (respipe [1], &respipe, 1);
1219
1220	/* optionally signal the main thread asynchronously */
1221	if (main_sig)
1222	pthread_kill (main_tid, main_sig);
1223	}
1224
1225	self->req = 0;
1226	worker_clear (self);
1227
1228	UNLOCK (reslock);
1229	}
1230
1231	quit:
1232	LOCK (wrklock);
1233	worker_free (self);
1234	UNLOCK (wrklock);
1235
1236	return 0;
1237	}
1238
1239	/*****************************************************************************/
1240
1241	static void atfork_prepare (void)
1242	{
1243	LOCK (wrklock);
1244	LOCK (reqlock);
1245	LOCK (reslock);
1246	#if !HAVE_PREADWRITE
1247	LOCK (preadwritelock);
1248	#endif
1249	#if !HAVE_READDIR_R
1250	LOCK (readdirlock);
1251	#endif
1252	}
1253
1254	static void atfork_parent (void)
1255	{
1256	#if !HAVE_READDIR_R
1257	UNLOCK (readdirlock);
1258	#endif
1259	#if !HAVE_PREADWRITE
1260	UNLOCK (preadwritelock);
1261	#endif
1262	UNLOCK (reslock);
1263	UNLOCK (reqlock);
1264	UNLOCK (wrklock);
1265	}
1266
1267	static void atfork_child (void)
1268	{
1269	aio_req prv;
1270
1271	while (prv = reqq_shift (&req_queue))
1272	req_free (prv);
1273
1274	while (prv = reqq_shift (&res_queue))
1275	req_free (prv);
1276
1277	while (wrk_first.next != &wrk_first)
1278	{
1279	worker *wrk = wrk_first.next;
1280
1281	if (wrk->req)
1282	req_free (wrk->req);
1283
1284	worker_clear (wrk);
1285	worker_free (wrk);
1286	}
1287
1288	started = 0;
1289	idle = 0;
1290	nreqs = 0;
1291	nready = 0;
1292	npending = 0;
1293
1294	close (respipe [0]);
1295	close (respipe [1]);
1296	create_pipe ();
1297
1298	atfork_parent ();
1299	}	518	}
1300		519
1301	#define dREQ \	520	#define dREQ \
		521	SV *cb_cv; \
1302	aio_req req; \	522	aio_req req; \
1303	int req_pri = next_pri; \	523	int req_pri = next_pri; \
1304	next_pri = DEFAULT_PRI + PRI_BIAS; \	524	next_pri = EIO_PRI_DEFAULT; \
1305	\	525	\
1306	if (SvOK (callback) && !SvROK (callback)) \	526	cb_cv = get_cb (callback); \
1307	croak ("callback must be undef or of reference type"); \
1308	\	527	\
1309	Newz (0, req, 1, aio_cb); \	528	Newz (0, req, 1, eio_req); \
1310	if (!req) \	529	if (!req) \
1311	croak ("out of memory during aio_req allocation"); \	530	croak ("out of memory during eio_req allocation"); \
1312	\	531	\
1313	req->callback = newSVsv (callback); \	532	req->callback = SvREFCNT_inc (cb_cv); \
1314	req->pri = req_pri	533	req->pri = req_pri
1315		534
1316	#define REQ_SEND \	535	#define REQ_SEND \
		536	PUTBACK; \
1317	req_send (req); \	537	req_submit (req); \
		538	SPAGAIN; \
1318	\	539	\
1319	if (GIMME_V != G_VOID) \	540	if (GIMME_V != G_VOID) \
1320	XPUSHs (req_sv (req, AIO_REQ_KLASS));	541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1321		542
		543	static int
		544	extract_fd (SV *fh, int wr)
		545	{
		546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		547
		548	if (fd < 0)
		549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		550
		551	return fd;
		552	}
		553
1322	MODULE = IO::AIO PACKAGE = IO::AIO	554	MODULE = IO::AIO PACKAGE = IO::AIO
1323		555
1324	PROTOTYPES: ENABLE	556	PROTOTYPES: ENABLE
1325		557
1326	BOOT:	558	BOOT:
1327	{	559	{
		560	static const struct {
		561	const char *name;
		562	IV iv;
		563	} *civ, const_iv[] = {
		564	# define const_iv(name, value) { # name, (IV) value },
		565	# define const_eio(name) { # name, (IV) EIO_ ## name },
		566	const_iv (EXDEV , EXDEV)
		567	const_iv (ENOSYS , ENOSYS)
		568	const_iv (O_RDONLY, O_RDONLY)
		569	const_iv (O_WRONLY, O_WRONLY)
		570	const_iv (O_CREAT , O_CREAT)
		571	const_iv (O_TRUNC , O_TRUNC)
		572	#ifndef _WIN32
		573	const_iv (S_IFIFO , S_IFIFO)
		574	#endif
		575	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		576	const_eio (SYNC_FILE_RANGE_WRITE)
		577	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		578
		579	const_eio (READDIR_DENTS)
		580	const_eio (READDIR_DIRS_FIRST)
		581	const_eio (READDIR_STAT_ORDER)
		582	const_eio (READDIR_FOUND_UNKNOWN)
		583
		584	const_eio (DT_UNKNOWN)
		585	const_eio (DT_FIFO)
		586	const_eio (DT_CHR)
		587	const_eio (DT_DIR)
		588	const_eio (DT_BLK)
		589	const_eio (DT_REG)
		590	const_eio (DT_LNK)
		591	const_eio (DT_SOCK)
		592	const_eio (DT_WHT)
		593	};
		594
1328	HV *stash = gv_stashpv ("IO::AIO", 1);	595	stash = gv_stashpv ("IO::AIO", 1);
1329		596
1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1337		599
1338	create_pipe ();	600	create_respipe ();
1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	601
		602	if (eio_init (want_poll, done_poll) < 0)
		603	croak ("IO::AIO: unable to initialise eio library");
		604
		605	/* atfork child called in fifo order, so before eio's handler */
		606	X_THREAD_ATFORK (0, 0, atfork_child);
1340	}	607	}
1341		608
1342	void	609	void
1343	max_poll_reqs (int nreqs)	610	max_poll_reqs (int nreqs)
1344	PROTOTYPE: $	611	PROTOTYPE: $
1345	CODE:	612	CODE:
1346	max_poll_reqs = nreqs;	613	eio_set_max_poll_reqs (nreqs);
1347		614
1348	void	615	void
1349	max_poll_time (double nseconds)	616	max_poll_time (double nseconds)
1350	PROTOTYPE: $	617	PROTOTYPE: $
1351	CODE:	618	CODE:
1352	max_poll_time = nseconds * AIO_TICKS;	619	eio_set_max_poll_time (nseconds);
1353		620
1354	void	621	void
1355	min_parallel (int nthreads)	622	min_parallel (int nthreads)
1356	PROTOTYPE: $	623	PROTOTYPE: $
		624	CODE:
		625	eio_set_min_parallel (nthreads);
1357		626
1358	void	627	void
1359	max_parallel (int nthreads)	628	max_parallel (int nthreads)
1360	PROTOTYPE: $	629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_parallel (nthreads);
1361		632
1362	void	633	void
1363	max_idle (int nthreads)	634	max_idle (int nthreads)
1364	PROTOTYPE: $	635	PROTOTYPE: $
1365	CODE:	636	CODE:
1366	set_max_idle (nthreads);	637	eio_set_max_idle (nthreads);
1367		638
1368	int	639	void
1369	max_outstanding (int maxreqs)	640	max_outstanding (int maxreqs)
1370	PROTOTYPE: $	641	PROTOTYPE: $
1371	CODE:	642	CODE:
1372	RETVAL = max_outstanding;
1373	max_outstanding = maxreqs;	643	max_outstanding = maxreqs;
1374	OUTPUT:
1375	RETVAL
1376		644
1377	void	645	void
1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1379	SV8 * pathname
1380	int flags
1381	int mode
1382	SV * callback
1383	PROTOTYPE: $$$;$	647	PROTOTYPE: $$$;$
1384	PPCODE:	648	PPCODE:
1385	{	649	{
1386	dREQ;	650	dREQ;
1387		651
1388	req->type = REQ_OPEN;	652	req->type = EIO_OPEN;
1389	req->sv1 = newSVsv (pathname);	653	req->sv1 = newSVsv (pathname);
1390	req->ptr1 = SvPVbyte_nolen (req->sv1);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1391	req->int1 = flags;	655	req->int1 = flags;
1392	req->mode = mode;	656	req->int2 = mode;
1393		657
1394	REQ_SEND;	658	REQ_SEND;
1395	}	659	}
1396		660
1397	void	661	void
1398	aio_close (fh,callback=&PL_sv_undef)	662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1399	SV * fh
1400	SV * callback
1401	PROTOTYPE: $;$	663	PROTOTYPE: $;$
1402	ALIAS:	664	ALIAS:
1403	aio_close = REQ_CLOSE
1404	aio_fsync = REQ_FSYNC	665	aio_fsync = EIO_FSYNC
1405	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = EIO_FDATASYNC
1406	PPCODE:	667	PPCODE:
1407	{	668	{
		669	int fd = extract_fd (fh, 0);
1408	dREQ;	670	dREQ;
1409		671
1410	req->type = ix;	672	req->type = ix;
1411	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = fd;
1413		675
1414	REQ_SEND (req);	676	REQ_SEND (req);
1415	}	677	}
1416		678
1417	void	679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1419	SV * fh
1420	UV offset
1421	UV length
1422	SV8 * data
1423	UV dataoffset
1424	SV * callback
1425	ALIAS:	728	ALIAS:
1426	aio_read = REQ_READ	729	aio_read = EIO_READ
1427	aio_write = REQ_WRITE	730	aio_write = EIO_WRITE
1428	PROTOTYPE: $$$$$;$	731	PROTOTYPE: $$$$$;$
1429	PPCODE:	732	PPCODE:
1430	{	733	{
1431	STRLEN svlen;	734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
1432	char *svptr = SvPVbyte (data, svlen);	736	char *svptr = SvPVbyte (data, svlen);
1433		737	UV len = SvUV (length);
1434	SvUPGRADE (data, SVt_PV);
1435	SvPOK_on (data);
1436		738
1437	if (dataoffset < 0)	739	if (dataoffset < 0)
1438	dataoffset += svlen;	740	dataoffset += svlen;
1439		741
1440	if (dataoffset < 0 || dataoffset > svlen)	742	if (dataoffset < 0 || dataoffset > svlen)
1441	croak ("data offset outside of string");	743	croak ("dataoffset outside of data scalar");
1442		744
1443	if (ix == REQ_WRITE)	745	if (ix == EIO_WRITE)
1444	{	746	{
1445	/* write: check length and adjust. */	747	/* write: check length and adjust. */
1446	if (length < 0 || length + dataoffset > svlen)	748	if (!SvOK (length) || len + dataoffset > svlen)
1447	length = svlen - dataoffset;	749	len = svlen - dataoffset;
1448	}	750	}
1449	else	751	else
1450	{	752	{
1451	/* read: grow scalar as necessary */	753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
1452	svptr = SvGROW (data, length + dataoffset + 1);	755	svptr = SvGROW (data, len + dataoffset + 1);
1453	}	756	}
1454
1455	if (length < 0)
1456	croak ("length must not be negative");
1457		757
1458	{	758	{
1459	dREQ;	759	dREQ;
1460		760
1461	req->type = ix;	761	req->type = ix;
1462	req->fh = newSVsv (fh);	762	req->sv1 = newSVsv (fh);
1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	763	req->int1 = fd;
1464	: IoOFP (sv_2io (fh)));	764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1465	req->offs = offset;
1466	req->size = length;	765	req->size = len;
1467	req->sv1 = SvREFCNT_inc (data);	766	req->sv2 = SvREFCNT_inc (data);
1468	req->ptr1 = (char *)svptr + dataoffset;	767	req->ptr2 = (char *)svptr + dataoffset;
1469	req->stroffset = dataoffset;	768	req->stroffset = dataoffset;
1470		769
1471	if (!SvREADONLY (data))	770	if (!SvREADONLY (data))
1472	{	771	{
1473	SvREADONLY_on (data);	772	SvREADONLY_on (data);
1474	req->flags |= FLAG_SV1_RO_OFF;	773	req->flags |= FLAG_SV2_RO_OFF;
1475	}	774	}
1476		775
1477	REQ_SEND;	776	REQ_SEND;
1478	}	777	}
1479	}	778	}
1480		779
1481	void	780	void
1482	aio_readlink (path,callback=&PL_sv_undef)	781	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1483	SV8 * path
1484	SV * callback
1485	PROTOTYPE: $$;$	782	PROTOTYPE: $$;$
1486	PPCODE:	783	PPCODE:
1487	{	784	{
1488	SV *data;	785	SV *data;
1489	dREQ;	786	dREQ;
1490		787
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	788	req->type = EIO_READLINK;
1495	req->fh = newSVsv (path);	789	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->fh);	790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv1 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		791
1500	REQ_SEND;	792	REQ_SEND;
1501	}	793	}
1502		794
1503	void	795	void
1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	796	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1505	SV * out_fh
1506	SV * in_fh
1507	UV in_offset
1508	UV length
1509	SV * callback
1510	PROTOTYPE: $$$$;$	797	PROTOTYPE: $$$$;$
1511	PPCODE:	798	PPCODE:
1512	{	799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
1513	dREQ;	802	dREQ;
1514		803
1515	req->type = REQ_SENDFILE;	804	req->type = EIO_SENDFILE;
1516	req->fh = newSVsv (out_fh);	805	req->sv1 = newSVsv (out_fh);
1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	806	req->int1 = ofd;
1518	req->sv2 = newSVsv (in_fh);	807	req->sv2 = newSVsv (in_fh);
1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	808	req->int2 = ifd;
1520	req->offs = in_offset;	809	req->offs = SvVAL64 (in_offset);
1521	req->size = length;	810	req->size = length;
1522		811
1523	REQ_SEND;	812	REQ_SEND;
1524	}	813	}
1525		814
1526	void	815	void
1527	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1528	SV * fh
1529	UV offset
1530	IV length
1531	SV * callback
1532	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1533	PPCODE:	818	PPCODE:
1534	{	819	{
		820	int fd = extract_fd (fh, 0);
1535	dREQ;	821	dREQ;
1536		822
1537	req->type = REQ_READAHEAD;	823	req->type = EIO_READAHEAD;
1538	req->fh = newSVsv (fh);	824	req->sv1 = newSVsv (fh);
1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	825	req->int1 = fd;
1540	req->offs = offset;	826	req->offs = SvVAL64 (offset);
1541	req->size = length;	827	req->size = length;
1542		828
1543	REQ_SEND;	829	REQ_SEND;
1544	}	830	}
1545		831
1546	void	832	void
1547	aio_stat (fh_or_path,callback=&PL_sv_undef)	833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1548	SV8 * fh_or_path
1549	SV * callback
1550	ALIAS:	834	ALIAS:
1551	aio_stat = REQ_STAT	835	aio_stat = EIO_STAT
1552	aio_lstat = REQ_LSTAT	836	aio_lstat = EIO_LSTAT
1553	PPCODE:	837	PPCODE:
1554	{	838	{
1555	dREQ;	839	dREQ;
1556		840
1557	req->ptr2 = malloc (sizeof (Stat_t));	841	req->sv1 = newSVsv (fh_or_path);
1558	if (!req->ptr2)
1559	{
1560	req_free (req);
1561	croak ("out of memory during aio_stat statdata allocation");
1562	}
1563		842
1564	req->flags |= FLAG_PTR2_FREE;	843	if (SvPOK (req->sv1))
1565
1566	if (SvPOK (fh_or_path))
1567	{	844	{
1568	req->type = ix;	845	req->type = ix;
1569	req->sv1 = newSVsv (fh_or_path);
1570	req->ptr1 = SvPVbyte_nolen (req->sv1);	846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1571	}	847	}
1572	else	848	else
1573	{	849	{
1574	req->type = REQ_FSTAT;	850	req->type = EIO_FSTAT;
1575	req->fh = newSVsv (fh_or_path);
1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1577	}	852	}
1578		853
1579	REQ_SEND;	854	REQ_SEND;
1580	}	855	}
1581		856
1582	void	857	void
		858	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
		863	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		864	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		865	req->sv1 = newSVsv (fh_or_path);
		866
		867	if (SvPOK (req->sv1))
		868	{
		869	req->type = EIO_UTIME;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FUTIME;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
		877
		878	REQ_SEND;
		879	}
		880
		881	void
		882	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->sv1 = newSVsv (fh_or_path);
		888	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = EIO_TRUNCATE;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FTRUNCATE;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_chmod = EIO_CHMOD
		908	aio_mkdir = EIO_MKDIR
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = mode;
		914	req->sv1 = newSVsv (fh_or_path);
		915
		916	if (SvPOK (req->sv1))
		917	{
		918	req->type = ix;
		919	req->ptr1 = SvPVbyte_nolen (req->sv1);
		920	}
		921	else
		922	{
		923	req->type = EIO_FCHMOD;
		924	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		925	}
		926
		927	REQ_SEND;
		928	}
		929
		930	void
		931	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		932	PPCODE:
		933	{
		934	dREQ;
		935
		936	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		937	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		938	req->sv1 = newSVsv (fh_or_path);
		939
		940	if (SvPOK (req->sv1))
		941	{
		942	req->type = EIO_CHOWN;
		943	req->ptr1 = SvPVbyte_nolen (req->sv1);
		944	}
		945	else
		946	{
		947	req->type = EIO_FCHOWN;
		948	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		949	}
		950
		951	REQ_SEND;
		952	}
		953
		954	void
		955	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		956	PPCODE:
		957	{
		958	dREQ;
		959
		960	req->type = EIO_READDIR;
		961	req->sv1 = newSVsv (pathname);
		962	req->ptr1 = SvPVbyte_nolen (req->sv1);
		963	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		964
		965	if (flags & EIO_READDIR_DENTS)
		966	req->int1 |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
1583	aio_unlink (pathname,callback=&PL_sv_undef)	972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	SV * callback
1586	ALIAS:	973	ALIAS:
1587	aio_unlink = REQ_UNLINK	974	aio_unlink = EIO_UNLINK
1588	aio_rmdir = REQ_RMDIR	975	aio_rmdir = EIO_RMDIR
1589	aio_readdir = REQ_READDIR	976	aio_readdir = EIO_READDIR
1590	PPCODE:	977	PPCODE:
1591	{	978	{
1592	dREQ;	979	dREQ;
1593		980
1594	req->type = ix;	981	req->type = ix;
…		…
1597		984
1598	REQ_SEND;	985	REQ_SEND;
1599	}	986	}
1600		987
1601	void	988	void
1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)	989	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1603	SV8 * pathname	990	ALIAS:
1604	UV mode	991	aio_link = EIO_LINK
1605	SV * callback	992	aio_symlink = EIO_SYMLINK
		993	aio_rename = EIO_RENAME
1606	PPCODE:	994	PPCODE:
1607	{	995	{
1608	dREQ;	996	dREQ;
1609		997
		998	req->type = ix;
		999	req->sv1 = newSVsv (oldpath);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->sv2 = newSVsv (newpath);
		1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
		1003
		1004	REQ_SEND;
		1005	}
		1006
		1007	void
		1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1009	PPCODE:
		1010	{
		1011	dREQ;
		1012
1610	req->type = REQ_MKDIR;	1013	req->type = EIO_MKNOD;
1611	req->sv1 = newSVsv (pathname);	1014	req->sv1 = newSVsv (pathname);
1612	req->ptr1 = SvPVbyte_nolen (req->sv1);	1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1613	req->mode = mode;
1614
1615	REQ_SEND;
1616	}
1617
1618	void
1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1620	SV8 * oldpath
1621	SV8 * newpath
1622	SV * callback
1623	ALIAS:
1624	aio_link = REQ_LINK
1625	aio_symlink = REQ_SYMLINK
1626	aio_rename = REQ_RENAME
1627	PPCODE:
1628	{
1629	dREQ;
1630
1631	req->type = ix;
1632	req->fh = newSVsv (oldpath);
1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1634	req->sv1 = newSVsv (newpath);
1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1636
1637	REQ_SEND;
1638	}
1639
1640	void
1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1642	SV8 * pathname
1643	UV mode
1644	UV dev
1645	SV * callback
1646	PPCODE:
1647	{
1648	dREQ;
1649
1650	req->type = REQ_MKNOD;
1651	req->sv1 = newSVsv (pathname);
1652	req->ptr1 = SvPVbyte_nolen (req->sv1);
1653	req->mode = (mode_t)mode;	1016	req->int2 = (mode_t)mode;
1654	req->offs = dev;	1017	req->offs = dev;
1655		1018
1656	REQ_SEND;	1019	REQ_SEND;
1657	}	1020	}
1658		1021
1659	void	1022	void
1660	aio_busy (delay,callback=&PL_sv_undef)	1023	aio_busy (double delay, SV *callback=&PL_sv_undef)
1661	double delay
1662	SV * callback
1663	PPCODE:	1024	PPCODE:
1664	{	1025	{
1665	dREQ;	1026	dREQ;
1666		1027
1667	req->type = REQ_BUSY;	1028	req->type = EIO_BUSY;
1668	req->int1 = delay < 0. ? 0 : delay;	1029	req->nv1 = delay < 0. ? 0. : delay;
1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1670		1030
1671	REQ_SEND;	1031	REQ_SEND;
1672	}	1032	}
1673		1033
1674	void	1034	void
1675	aio_group (callback=&PL_sv_undef)	1035	aio_group (SV *callback=&PL_sv_undef)
1676	SV * callback
1677	PROTOTYPE: ;$	1036	PROTOTYPE: ;$
1678	PPCODE:	1037	PPCODE:
1679	{	1038	{
1680	dREQ;	1039	dREQ;
1681		1040
1682	req->type = REQ_GROUP;	1041	req->type = EIO_GROUP;
1683		1042
1684	req_send (req);	1043	req_submit (req);
1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1686	}	1045	}
1687		1046
1688	void	1047	void
1689	aio_nop (callback=&PL_sv_undef)	1048	aio_nop (SV *callback=&PL_sv_undef)
1690	SV * callback	1049	ALIAS:
		1050	aio_nop = EIO_NOP
		1051	aio_sync = EIO_SYNC
1691	PPCODE:	1052	PPCODE:
1692	{	1053	{
1693	dREQ;	1054	dREQ;
1694		1055
1695	req->type = REQ_NOP;	1056	req->type = ix;
1696		1057
1697	REQ_SEND;	1058	REQ_SEND;
1698	}	1059	}
1699		1060
1700	int	1061	int
1701	aioreq_pri (int pri = 0)	1062	aioreq_pri (int pri = 0)
1702	PROTOTYPE: ;$	1063	PROTOTYPE: ;$
1703	CODE:	1064	CODE:
1704	RETVAL = next_pri - PRI_BIAS;	1065	RETVAL = next_pri;
1705	if (items > 0)	1066	if (items > 0)
1706	{	1067	{
1707	if (pri < PRI_MIN) pri = PRI_MIN;	1068	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1708	if (pri > PRI_MAX) pri = PRI_MAX;	1069	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1709	next_pri = pri + PRI_BIAS;	1070	next_pri = pri;
1710	}	1071	}
1711	OUTPUT:	1072	OUTPUT:
1712	RETVAL	1073	RETVAL
1713		1074
1714	void	1075	void
1715	aioreq_nice (int nice = 0)	1076	aioreq_nice (int nice = 0)
1716	CODE:	1077	CODE:
1717	nice = next_pri - nice;	1078	nice = next_pri - nice;
1718	if (nice < PRI_MIN) nice = PRI_MIN;	1079	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1719	if (nice > PRI_MAX) nice = PRI_MAX;	1080	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1720	next_pri = nice + PRI_BIAS;	1081	next_pri = nice;
1721		1082
1722	void	1083	void
1723	flush ()	1084	flush ()
1724	PROTOTYPE:	1085	PROTOTYPE:
1725	CODE:	1086	CODE:
1726	while (nreqs)	1087	while (eio_nreqs ())
1727	{	1088	{
1728	poll_wait ();	1089	poll_wait ();
1729	poll_cb ();	1090	poll_cb ();
1730	}	1091	}
1731		1092
…		…
1758	poll_wait()	1119	poll_wait()
1759	PROTOTYPE:	1120	PROTOTYPE:
1760	CODE:	1121	CODE:
1761	poll_wait ();	1122	poll_wait ();
1762		1123
1763	void
1764	setsig (int signum = SIGIO)
1765	PROTOTYPE: ;$
1766	CODE:
1767	{
1768	if (block_sig_level)
1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1770
1771	LOCK (reslock);
1772	main_tid = pthread_self ();
1773	main_sig = signum;
1774	UNLOCK (reslock);
1775
1776	if (main_sig && npending)
1777	pthread_kill (main_tid, main_sig);
1778	}
1779
1780	void
1781	aio_block (SV *cb)
1782	PROTOTYPE: &
1783	PPCODE:
1784	{
1785	int count;
1786
1787	block_sig ();
1788	PUSHMARK (SP);
1789	PUTBACK;
1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1791	SPAGAIN;
1792	unblock_sig ();
1793
1794	if (SvTRUE (ERRSV))
1795	croak (0);
1796
1797	XSRETURN (count);
1798	}
1799
1800	int	1124	int
1801	nreqs()	1125	nreqs()
1802	PROTOTYPE:	1126	PROTOTYPE:
1803	CODE:	1127	CODE:
1804	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
1805	OUTPUT:	1129	OUTPUT:
1806	RETVAL	1130	RETVAL
1807		1131
1808	int	1132	int
1809	nready()	1133	nready()
1810	PROTOTYPE:	1134	PROTOTYPE:
1811	CODE:	1135	CODE:
1812	RETVAL = get_nready ();	1136	RETVAL = eio_nready ();
1813	OUTPUT:	1137	OUTPUT:
1814	RETVAL	1138	RETVAL
1815		1139
1816	int	1140	int
1817	npending()	1141	npending()
1818	PROTOTYPE:	1142	PROTOTYPE:
1819	CODE:	1143	CODE:
1820	RETVAL = get_npending ();	1144	RETVAL = eio_npending ();
1821	OUTPUT:	1145	OUTPUT:
1822	RETVAL	1146	RETVAL
1823		1147
1824	int	1148	int
1825	nthreads()	1149	nthreads()
1826	PROTOTYPE:	1150	PROTOTYPE:
1827	CODE:	1151	CODE:
1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1152	RETVAL = eio_nthreads ();
1829	RETVAL = started;
1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1831	OUTPUT:	1153	OUTPUT:
1832	RETVAL	1154	RETVAL
1833		1155
		1156	void _on_next_submit (SV *cb)
		1157	CODE:
		1158	SvREFCNT_dec (on_next_submit);
		1159	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1160
1834	PROTOTYPES: DISABLE	1161	PROTOTYPES: DISABLE
1835		1162
1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1837		1164
1838	void	1165	void
1839	cancel (aio_req_ornot req)	1166	cancel (aio_req_ornot req)
1840	CODE:	1167	CODE:
1841	req_cancel (req);	1168	eio_cancel (req);
1842		1169
1843	void	1170	void
1844	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1845	CODE:	1172	PPCODE:
		1173	{
		1174	if (GIMME_V != G_VOID)
		1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1176
		1177	if (items > 1)
		1178	{
		1179	SV *cb_cv = get_cb (callback);
		1180
1846	SvREFCNT_dec (req->callback);	1181	SvREFCNT_dec (req->callback);
1847	req->callback = newSVsv (callback);	1182	req->callback = SvREFCNT_inc (cb_cv);
		1183	}
		1184	}
1848		1185
1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1186	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1850		1187
1851	void	1188	void
1852	add (aio_req grp, ...)	1189	add (aio_req grp, ...)
1853	PPCODE:	1190	PPCODE:
1854	{	1191	{
1855	int i;	1192	int i;
1856	aio_req req;
1857
1858	if (main_sig && !block_sig_level)
1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1860		1193
1861	if (grp->int1 == 2)	1194	if (grp->int1 == 2)
1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1195	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1863		1196
1864	for (i = 1; i < items; ++i )	1197	for (i = 1; i < items; ++i )
1865	{	1198	{
		1199	aio_req req;
		1200
1866	if (GIMME_V != G_VOID)	1201	if (GIMME_V != G_VOID)
1867	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1202	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1868		1203
1869	req = SvAIO_REQ (ST (i));	1204	req = SvAIO_REQ (ST (i));
1870		1205
1871	if (req)	1206	if (req)
1872	{	1207	eio_grp_add (grp, req);
1873	++grp->size;
1874	req->grp = grp;
1875
1876	req->grp_prev = 0;
1877	req->grp_next = grp->grp_first;
1878
1879	if (grp->grp_first)
1880	grp->grp_first->grp_prev = req;
1881
1882	grp->grp_first = req;
1883	}
1884	}	1208	}
1885	}	1209	}
1886		1210
1887	void	1211	void
1888	cancel_subs (aio_req_ornot req)	1212	cancel_subs (aio_req_ornot req)
…		…
1897	AV *av;	1221	AV *av;
1898		1222
1899	grp->errorno = errno;	1223	grp->errorno = errno;
1900		1224
1901	av = newAV ();	1225	av = newAV ();
		1226	av_extend (av, items - 1);
1902		1227
1903	for (i = 1; i < items; ++i )	1228	for (i = 1; i < items; ++i )
1904	av_push (av, newSVsv (ST (i)));	1229	av_push (av, newSVsv (ST (i)));
1905		1230
1906	SvREFCNT_dec (grp->sv1);	1231	SvREFCNT_dec (grp->sv1);
…		…
1913	grp->errorno = errorno;	1238	grp->errorno = errorno;
1914		1239
1915	void	1240	void
1916	limit (aio_req grp, int limit)	1241	limit (aio_req grp, int limit)
1917	CODE:	1242	CODE:
1918	grp->int2 = limit;	1243	eio_grp_limit (grp, limit);
1919	aio_grp_feed (grp);
1920		1244
1921	void	1245	void
1922	feed (aio_req grp, SV *callback=&PL_sv_undef)	1246	feed (aio_req grp, SV *callback=&PL_sv_undef)
1923	CODE:	1247	CODE:
1924	{	1248	{
1925	SvREFCNT_dec (grp->sv2);	1249	SvREFCNT_dec (grp->sv2);
1926	grp->sv2 = newSVsv (callback);	1250	grp->sv2 = newSVsv (callback);
		1251	grp->feed = aio_grp_feed;
1927		1252
1928	if (grp->int2 <= 0)	1253	if (grp->int2 <= 0)
1929	grp->int2 = 2;	1254	grp->int2 = 2;
1930		1255
1931	aio_grp_feed (grp);	1256	eio_grp_limit (grp, grp->int2);
1932	}	1257	}
1933		1258

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