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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.108 by root, Thu Oct 4 12:50:35 2007 UTC vs.
Revision 1.154 by root, Wed Jul 15 01:39:15 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
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	/* perl namespace pollution */
		21	#undef VERSION
		22
18	#ifdef _WIN32	23	#ifdef _WIN32
19		24
20	# define SIGIO 0	25	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	26	# undef malloc
23	#undef free	27	# undef free
24		28
25	// perl overrides all those nice win32 functions	29	// perl overrides all those nice win32 functions
26	# undef open	30	# undef open
27	# undef read	31	# undef read
28	# undef write	32	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	58	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	59	# define mkdir(a,b) mkdir (a)
56		60
57	#else	61	#else
58		62
59	# include "autoconf/config.h"
60	# include <sys/time.h>	63	# include <sys/time.h>
61	# include <sys/select.h>	64	# include <sys/select.h>
62	# include <unistd.h>	65	# include <unistd.h>
63	# include <utime.h>	66	# include <utime.h>
64	# include <signal.h>	67	# include <signal.h>
65	typedef struct dirent X_DIRENT;	68	# define EIO_STRUCT_DIRENT struct dirent
66		69
67	#endif	70	#endif
68		71
69	#if HAVE_SENDFILE	72	/* perl stupidly overrides readdir and maybe others */
70	# if __linux	73	/* with thread-unsafe versions, imagine that :( */
71	# include <sys/sendfile.h>	74	#undef readdir
72	# elif __freebsd	75	#undef opendir
73	# include <sys/socket.h>	76	#undef closedir
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif
82	#endif
83		77
84	/* number of seconds after which idle threads exit */	78	#define EIO_STRUCT_STAT Stat_t
85	#define IDLE_TIMEOUT 10
86
87	/* used for struct dirent, AIX doesn't provide it */
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		79
95	/* use NV for 32 bit perls as it allows larger offsets */	80	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	81	#if IVSIZE >= 8
		82	# define VAL64 IV
97	# define SvVAL64 SvIV	83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
98	#else	85	#else
		86	# define VAL64 NV
99	# define SvVAL64 SvNV	87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
100	#endif	89	#endif
101		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
102	static HV *stash;	104	static HV *stash;
103
104	#define dBUF \
105	char *aio_buf; \
106	X_LOCK (wrklock); \
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
108	X_UNLOCK (wrklock); \
109	if (!aio_buf) \
110	return -1;
111
112	typedef SV SV8; /* byte-sv, used for argument-checking */	105	typedef SV SV8; /* byte-sv, used for argument-checking */
113		106	typedef int aio_rfd; /* read file desriptor */
114	enum {	107	typedef int aio_wfd; /* write file descriptor */
115	REQ_QUIT,
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};
131		108
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		111
135	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;	113	SV *callback; \
140	SV *sv1, *sv2;	114	SV *sv1, *sv2; \
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;	115	STRLEN stroffset; \
148	int type;	116	SV *self;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		117
153	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
154	unsigned char pri;
155		119
156	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
158	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
159		151
160	enum {	152	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};	154	};
165		155
		156	#include "libeio/eio.c"
		157
166	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
168		160
169	enum {	161	static SV *on_next_submit;
170	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	163	static int max_outstanding;
172		164
173	DEFAULT_PRI = 0,	165	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		166
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig ()
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig ()
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready ()
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending ()
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads ()
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	167	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	168	static void req_cancel (aio_req req);
		169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	s_epipe_signal (&respipe);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	s_epipe_drain (&respipe);
		180	}
378		181
379	/* must be called at most once */	182	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
381	{	184	{
382	if (!req->self)	185	if (!req->self)
…		…
400	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	204	}
402		205
403	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
404	{	207	{
405	block_sig ();	208	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	209	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	210	dSP;
414		211
415	ENTER;	212	ENTER;
416	SAVETMPS;	213	SAVETMPS;
417	PUSHMARK (SP);	214	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
419	PUTBACK;	216	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	218	SPAGAIN;
422	FREETMPS;	219	FREETMPS;
423	LEAVE;	220	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	221	}
434
435	unblock_sig ();
436	}	222	}
437		223
438	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
439	{	225	{
440	--grp->size;	226	eio_submit (req);
441		227
442	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	229	{
448	block_sig ();	230	dSP;
		231	SV *cb = sv_2mortal (on_next_submit);
449		232
450	if (!req_invoke (grp))	233	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		234
457	req_destroy (grp);	235	PUSHMARK (SP);
458	unblock_sig ();	236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
459	}	238	}
460	}	239	}
461		240
462	static int req_invoke (aio_req req)	241	static int req_invoke (eio_req *req)
463	{	242	{
464	dSP;	243	dSP;
465		244
466	if (req->flags & FLAG_SV2_RO_OFF)	245	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	246	SvREADONLY_off (req->sv2);
468		247
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	248	if (!EIO_CANCELLED (req) && req->callback)
470	{	249	{
471	ENTER;	250	ENTER;
472	SAVETMPS;	251	SAVETMPS;
473	PUSHMARK (SP);	252	PUSHMARK (SP);
474	EXTEND (SP, 1);	253	EXTEND (SP, 1);
475		254
476	switch (req->type)	255	switch (req->type)
477	{	256	{
478	case REQ_READDIR:	257	case EIO_READDIR:
479	{	258	{
480	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
481		260
482	if (req->result >= 0)	261	if (req->result >= 0)
483	{	262	{
484	int i;	263	int i;
485	char *buf = req->ptr2;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	266	AV *av = newAV ();
487		267
488	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
489		269
490	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
491	{	271	{
492	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
494	av_store (av, i, sv);	296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
496	}	306	}
497		307
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	309	}
500		310
501	PUSHs (rv);	311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	315	}
503	break;	316	break;
504		317
505	case REQ_OPEN:	318	case EIO_OPEN:
506	{	319	{
507	/* convert fd to fh */	320	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	321	SV *fh = &PL_sv_undef;
509		322
510	if (req->result >= 0)	323	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	325	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	327	char sym [64];
515	int symlen;	328	int symlen;
516		329
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	331	gv_init (gv, stash, sym, symlen, 0);
519		332
520	symlen = snprintf (	333	symlen = snprintf (
521	sym,	334	sym,
522	sizeof (sym),	335	sizeof (sym),
523	"%s&=%d",	336	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	338	(int)req->result
526	);	339	);
527		340
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	342	fh = (SV *)gv;
530	}	343	}
531		344
532	XPUSHs (fh);	345	PUSHs (fh);
533	}	346	}
534	break;	347	break;
535		348
536	case REQ_GROUP:	349	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
538		351
539	if (req->sv1)	352	if (req->sv1)
540	{	353	{
541	int i;	354	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
547	}	360	}
548	break;	361	break;
549		362
550	case REQ_NOP:	363	case EIO_NOP:
551	case REQ_BUSY:	364	case EIO_BUSY:
552	break;	365	break;
553		366
554	case REQ_READLINK:	367	case EIO_READLINK:
555	if (req->result > 0)	368	if (req->result > 0)
556	{	369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	370	break;
562		371
563	case REQ_STAT:	372	case EIO_STAT:
564	case REQ_LSTAT:	373	case EIO_LSTAT:
565	case REQ_FSTAT:	374	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	376	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	378	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;	379	break;
571		380
572	case REQ_READ:	381	case EIO_READ:
		382	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	384	*SvEND (req->sv2) = 0;
		385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
575	PUSHs (sv_2mortal (newSViv (req->result)));	387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
576	break;	389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
577		395
578	default:	396	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
580	break;	398	break;
581	}	399	}
582		400
583	errno = req->errorno;	401	errno = req->errorno;
584		402
585	PUTBACK;	403	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	405	SPAGAIN;
588		406
589	FREETMPS;	407	FREETMPS;
590	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
591	}	411	}
592		412
593	if (req->grp)
594	{
595	aio_req grp = req->grp;
596
597	/* unlink request */
598	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
599	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
600
601	if (grp->grp_first == req)
602	grp->grp_first = req->grp_next;
603
604	aio_grp_dec (grp);
605	}
606
607	return !SvTRUE (ERRSV);	413	return !!SvTRUE (ERRSV);
608	}	414	}
609		415
610	static void req_destroy (aio_req req)	416	static void req_destroy (aio_req req)
611	{	417	{
612	if (req->self)	418	if (req->self)
…		…
617		423
618	SvREFCNT_dec (req->sv1);	424	SvREFCNT_dec (req->sv1);
619	SvREFCNT_dec (req->sv2);	425	SvREFCNT_dec (req->sv2);
620	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
621		427
622	if (req->flags & FLAG_PTR2_FREE)
623	free (req->ptr2);
624
625	Safefree (req);	428	Safefree (req);
626	}	429	}
627		430
628	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
629	{	432	{
630	aio_req sub;	433	aio_req sub;
631		434
632	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
633	return;	436	return;
634		437
635	SvREFCNT_dec (grp->sv2);	438	SvREFCNT_dec (grp->sv2);
636	grp->sv2 = 0;	439	grp->sv2 = 0;
637		440
638	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
639	req_cancel (sub);
640	}	442	}
641
642	static void req_cancel (aio_req req)
643	{
644	req->flags |= FLAG_CANCELLED;
645
646	req_cancel_subs (req);
647	}
648
649	#ifdef USE_SOCKETS_AS_HANDLES
650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
651	#else
652	# define TO_SOCKET(x) (x)
653	#endif
654		443
655	static void	444	static void
656	create_respipe ()	445	create_respipe (void)
657	{	446	{
658	int old_readfd = respipe [0];
659
660	if (respipe [1] >= 0)
661	respipe_close (TO_SOCKET (respipe [1]));
662
663	#ifdef _WIN32
664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
665	#else
666	if (pipe (respipe))	447	if (s_epipe_renew (&respipe))
667	#endif
668	croak ("unable to initialize result pipe");	448	croak ("unable to initialize result pipe");
669
670	if (old_readfd >= 0)
671	{
672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
673	croak ("unable to initialize result pipe(2)");
674
675	respipe_close (respipe [0]);
676	respipe [0] = old_readfd;
677	}
678
679	#ifdef _WIN32
680	int arg = 1;
681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
683	#else
684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
686	#endif
687	croak ("unable to initialize result pipe(3)");
688
689	respipe_osf [0] = TO_SOCKET (respipe [0]);
690	respipe_osf [1] = TO_SOCKET (respipe [1]);
691	}	449	}
692		450
693	X_THREAD_PROC (aio_proc);
694
695	static void start_thread (void)
696	{
697	worker *wrk = calloc (1, sizeof (worker));
698
699	if (!wrk)
700	croak ("unable to allocate worker thread data");
701
702	X_LOCK (wrklock);
703
704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
705	{
706	wrk->prev = &wrk_first;
707	wrk->next = wrk_first.next;
708	wrk_first.next->prev = wrk;
709	wrk_first.next = wrk;
710	++started;
711	}
712	else
713	free (wrk);
714
715	X_UNLOCK (wrklock);
716	}
717
718	static void maybe_start_thread ()
719	{
720	if (get_nthreads () >= wanted)
721	return;
722
723	/* todo: maybe use idle here, but might be less exact */
724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
725	return;
726
727	start_thread ();
728	}
729
730	static void req_send (aio_req req)
731	{
732	block_sig ();
733
734	++nreqs;
735
736	X_LOCK (reqlock);
737	++nready;
738	reqq_push (&req_queue, req);
739	X_COND_SIGNAL (reqwait);
740	X_UNLOCK (reqlock);
741
742	unblock_sig ();
743
744	maybe_start_thread ();
745	}
746
747	static void end_thread (void)
748	{
749	aio_req req;
750
751	Newz (0, req, 1, aio_cb);
752
753	req->type = REQ_QUIT;
754	req->pri = PRI_MAX + PRI_BIAS;
755
756	X_LOCK (reqlock);
757	reqq_push (&req_queue, req);
758	X_COND_SIGNAL (reqwait);
759	X_UNLOCK (reqlock);
760
761	X_LOCK (wrklock);
762	--started;
763	X_UNLOCK (wrklock);
764	}
765
766	static void set_max_idle (int nthreads)
767	{
768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
769	max_idle = nthreads <= 0 ? 1 : nthreads;
770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
771	}
772
773	static void min_parallel (int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void max_parallel (int nthreads)
780	{
781	if (wanted > nthreads)
782	wanted = nthreads;
783
784	while (started > wanted)
785	end_thread ();
786	}
787
788	static void poll_wait ()	451	static void poll_wait (void)
789	{	452	{
790	fd_set rfd;
791
792	while (nreqs)	453	while (eio_nreqs ())
793	{	454	{
794	int size;	455	int size;
795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	456
		457	X_LOCK (reslock);
796	size = res_queue.size;	458	size = res_queue.size;
797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	459	X_UNLOCK (reslock);
798		460
799	if (size)	461	if (size)
800	return;	462	return;
801		463
802	maybe_start_thread ();	464	etp_maybe_start_thread ();
803		465
804	FD_ZERO (&rfd);	466	s_epipe_wait (&respipe);
805	FD_SET (respipe [0], &rfd);
806
807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
808	}	467	}
809	}	468	}
810		469
811	static int poll_cb ()	470	static int poll_cb (void)
812	{	471	{
813	dSP;
814	int count = 0;
815	int maxreqs = max_poll_reqs;
816	int do_croak = 0;
817	struct timeval tv_start, tv_now;
818	aio_req req;
819
820	if (max_poll_time)
821	gettimeofday (&tv_start, 0);
822
823	block_sig ();
824
825	for (;;)	472	for (;;)
826	{	473	{
827	for (;;)	474	int res = eio_poll ();
828	{
829	maybe_start_thread ();
830		475
831	X_LOCK (reslock);	476	if (res > 0)
832	req = reqq_shift (&res_queue);
833
834	if (req)
835	{
836	--npending;
837
838	if (!res_queue.size)
839	{
840	/* read any signals sent by the worker threads */
841	char buf [4];
842	while (respipe_read (respipe [0], buf, 4) == 4)
843	;
844	}
845	}
846
847	X_UNLOCK (reslock);
848
849	if (!req)
850	break;
851
852	--nreqs;
853
854	if (req->type == REQ_GROUP && req->size)
855	{
856	req->int1 = 1; /* mark request as delayed */
857	continue;
858	}
859	else
860	{
861	if (!req_invoke (req))
862	{
863	req_destroy (req);
864	unblock_sig ();
865	croak (0);	477	croak (0);
866	}
867		478
868	count++;	479	if (!max_outstanding || max_outstanding > eio_nreqs ())
869	}	480	return res;
870
871	req_destroy (req);
872
873	if (maxreqs && !--maxreqs)
874	break;
875
876	if (max_poll_time)
877	{
878	gettimeofday (&tv_now, 0);
879
880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
881	break;
882	}
883	}
884
885	if (nreqs <= max_outstanding)
886	break;
887		481
888	poll_wait ();	482	poll_wait ();
889
890	++maxreqs;
891	}	483	}
892
893	unblock_sig ();
894	return count;
895	}
896
897	/*****************************************************************************/
898	/* work around various missing functions */
899
900	#if !HAVE_PREADWRITE
901	# define pread aio_pread
902	# define pwrite aio_pwrite
903
904	/*
905	* make our pread/pwrite safe against themselves, but not against
906	* normal read/write by using a mutex. slows down execution a lot,
907	* but that's your problem, not mine.
908	*/
909	static mutex_t preadwritelock = X_MUTEX_INIT;
910
911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
912	{
913	ssize_t res;
914	off_t ooffset;
915
916	X_LOCK (preadwritelock);
917	ooffset = lseek (fd, 0, SEEK_CUR);
918	lseek (fd, offset, SEEK_SET);
919	res = read (fd, buf, count);
920	lseek (fd, ooffset, SEEK_SET);
921	X_UNLOCK (preadwritelock);
922
923	return res;
924	}
925
926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
927	{
928	ssize_t res;
929	off_t ooffset;
930
931	X_LOCK (preadwritelock);
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, offset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941
942	#ifndef HAVE_FUTIMES
943
944	# define utimes(path,times) aio_utimes (path, times)
945	# define futimes(fd,times) aio_futimes (fd, times)
946
947	int aio_utimes (const char *filename, const struct timeval times[2])
948	{
949	if (times)
950	{
951	struct utimbuf buf;
952
953	buf.actime = times[0].tv_sec;
954	buf.modtime = times[1].tv_sec;
955
956	return utime (filename, &buf);
957	}
958	else
959	return utime (filename, 0);
960	}
961
962	int aio_futimes (int fd, const struct timeval tv[2])
963	{
964	errno = ENOSYS;
965	return -1;
966	}
967
968	#endif
969
970	#if !HAVE_FDATASYNC
971	# define fdatasync fsync
972	#endif
973
974	#if !HAVE_READAHEAD
975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
976
977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
978	{
979	size_t todo = count;
980	dBUF;
981
982	while (todo > 0)
983	{
984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
985
986	pread (fd, aio_buf, len, offset);
987	offset += len;
988	todo -= len;
989	}
990
991	errno = 0;
992	return count;
993	}
994
995	#endif
996
997	#if !HAVE_READDIR_R
998	# define readdir_r aio_readdir_r
999
1000	static mutex_t readdirlock = X_MUTEX_INIT;
1001
1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1003	{
1004	X_DIRENT *e;
1005	int errorno;
1006
1007	X_LOCK (readdirlock);
1008
1009	e = readdir (dirp);
1010	errorno = errno;
1011
1012	if (e)
1013	{
1014	*res = ent;
1015	strcpy (ent->d_name, e->d_name);
1016	}
1017	else
1018	*res = 0;
1019
1020	X_UNLOCK (readdirlock);
1021
1022	errno = errorno;
1023	return e ? 0 : -1;
1024	}
1025	#endif
1026
1027	/* sendfile always needs emulation */
1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1029	{
1030	ssize_t res;
1031
1032	if (!count)
1033	return 0;
1034
1035	#if HAVE_SENDFILE
1036	# if __linux
1037	res = sendfile (ofd, ifd, &offset, count);
1038
1039	# elif __freebsd
1040	/*
1041	* Of course, the freebsd sendfile is a dire hack with no thoughts
1042	* wasted on making it similar to other I/O functions.
1043	*/
1044	{
1045	off_t sbytes;
1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1047
1048	if (res < 0 && sbytes)
1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1050	res = sbytes;
1051	}
1052
1053	# elif __hpux
1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
1055
1056	# elif __solaris
1057	{
1058	struct sendfilevec vec;
1059	size_t sbytes;
1060
1061	vec.sfv_fd = ifd;
1062	vec.sfv_flag = 0;
1063	vec.sfv_off = offset;
1064	vec.sfv_len = count;
1065
1066	res = sendfilev (ofd, &vec, 1, &sbytes);
1067
1068	if (res < 0 && sbytes)
1069	res = sbytes;
1070	}
1071
1072	# endif
1073	#else
1074	res = -1;
1075	errno = ENOSYS;
1076	#endif
1077
1078	if (res < 0
1079	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1080	#if __solaris
1081	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1082	#endif
1083	)
1084	)
1085	{
1086	/* emulate sendfile. this is a major pain in the ass */
1087	dBUF;
1088
1089	res = 0;
1090
1091	while (count)
1092	{
1093	ssize_t cnt;
1094
1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1096
1097	if (cnt <= 0)
1098	{
1099	if (cnt && !res) res = -1;
1100	break;
1101	}
1102
1103	cnt = write (ofd, aio_buf, cnt);
1104
1105	if (cnt <= 0)
1106	{
1107	if (cnt && !res) res = -1;
1108	break;
1109	}
1110
1111	offset += cnt;
1112	res += cnt;
1113	count -= cnt;
1114	}
1115	}
1116
1117	return res;
1118	}
1119
1120	/* read a full directory */
1121	static void scandir_ (aio_req req, worker *self)
1122	{
1123	DIR *dirp;
1124	union
1125	{
1126	X_DIRENT d;
1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1128	} *u;
1129	X_DIRENT *entp;
1130	char *name, *names;
1131	int memlen = 4096;
1132	int memofs = 0;
1133	int res = 0;
1134
1135	X_LOCK (wrklock);
1136	self->dirp = dirp = opendir (req->ptr1);
1137	self->dbuf = u = malloc (sizeof (*u));
1138	req->flags |= FLAG_PTR2_FREE;
1139	req->ptr2 = names = malloc (memlen);
1140	X_UNLOCK (wrklock);
1141
1142	if (dirp && u && names)
1143	for (;;)
1144	{
1145	errno = 0;
1146	readdir_r (dirp, &u->d, &entp);
1147
1148	if (!entp)
1149	break;
1150
1151	name = entp->d_name;
1152
1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1154	{
1155	int len = strlen (name) + 1;
1156
1157	res++;
1158
1159	while (memofs + len > memlen)
1160	{
1161	memlen *= 2;
1162	X_LOCK (wrklock);
1163	req->ptr2 = names = realloc (names, memlen);
1164	X_UNLOCK (wrklock);
1165
1166	if (!names)
1167	break;
1168	}
1169
1170	memcpy (names + memofs, name, len);
1171	memofs += len;
1172	}
1173	}
1174
1175	if (errno)
1176	res = -1;
1177
1178	req->result = res;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	X_THREAD_PROC (aio_proc)
1184	{
1185	{//D
1186	aio_req req;
1187	struct timespec ts;
1188	worker *self = (worker *)thr_arg;
1189
1190	/* try to distribute timeouts somewhat randomly */
1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1192
1193	for (;;)
1194	{
1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1196
1197	X_LOCK (reqlock);
1198
1199	for (;;)
1200	{
1201	self->req = req = reqq_shift (&req_queue);
1202
1203	if (req)
1204	break;
1205
1206	++idle;
1207
1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1209	== ETIMEDOUT)
1210	{
1211	if (idle > max_idle)
1212	{
1213	--idle;
1214	X_UNLOCK (reqlock);
1215	X_LOCK (wrklock);
1216	--started;
1217	X_UNLOCK (wrklock);
1218	goto quit;
1219	}
1220
1221	/* we are allowed to idle, so do so without any timeout */
1222	X_COND_WAIT (reqwait, reqlock);
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224	}
1225
1226	--idle;
1227	}
1228
1229	--nready;
1230
1231	X_UNLOCK (reqlock);
1232
1233	errno = 0; /* strictly unnecessary */
1234
1235	if (!(req->flags & FLAG_CANCELLED))
1236	switch (req->type)
1237	{
1238	case REQ_READ: req->result = req->offs >= 0
1239	? pread (req->int1, req->ptr1, req->size, req->offs)
1240	: read (req->int1, req->ptr1, req->size); break;
1241	case REQ_WRITE: req->result = req->offs >= 0
1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1243	: write (req->int1, req->ptr1, req->size); break;
1244
1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1247
1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1251
1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1258
1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1269
1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
1272	case REQ_READDIR: scandir_ (req, self); break;
1273
1274	case REQ_BUSY:
1275	#ifdef _WIN32
1276	Sleep (req->nv1 * 1000.);
1277	#else
1278	{
1279	struct timeval tv;
1280
1281	tv.tv_sec = req->nv1;
1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1283
1284	req->result = select (0, 0, 0, 0, &tv);
1285	}
1286	#endif
1287	break;
1288
1289	case REQ_UTIME:
1290	case REQ_FUTIME:
1291	{
1292	struct timeval tv[2];
1293	struct timeval *times;
1294
1295	if (req->nv1 != -1. || req->nv2 != -1.)
1296	{
1297	tv[0].tv_sec = req->nv1;
1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1299	tv[1].tv_sec = req->nv2;
1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1301
1302	times = tv;
1303	}
1304	else
1305	times = 0;
1306
1307
1308	req->result = req->type == REQ_FUTIME
1309	? futimes (req->int1, times)
1310	: utimes (req->ptr1, times);
1311	}
1312
1313	case REQ_GROUP:
1314	case REQ_NOP:
1315	break;
1316
1317	case REQ_QUIT:
1318	goto quit;
1319
1320	default:
1321	req->result = -1;
1322	break;
1323	}
1324
1325	req->errorno = errno;
1326
1327	X_LOCK (reslock);
1328
1329	++npending;
1330
1331	if (!reqq_push (&res_queue, req))
1332	{
1333	/* write a dummy byte to the pipe so fh becomes ready */
1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1335
1336	/* optionally signal the main thread asynchronously */
1337	if (main_sig)
1338	pthread_kill (main_tid, main_sig);
1339	}
1340
1341	self->req = 0;
1342	worker_clear (self);
1343
1344	X_UNLOCK (reslock);
1345	}
1346
1347	quit:
1348	X_LOCK (wrklock);
1349	worker_free (self);
1350	X_UNLOCK (wrklock);
1351
1352	return 0;
1353	}//D
1354	}
1355
1356	/*****************************************************************************/
1357
1358	static void atfork_prepare (void)
1359	{
1360	X_LOCK (wrklock);
1361	X_LOCK (reqlock);
1362	X_LOCK (reslock);
1363	#if !HAVE_PREADWRITE
1364	X_LOCK (preadwritelock);
1365	#endif
1366	#if !HAVE_READDIR_R
1367	X_LOCK (readdirlock);
1368	#endif
1369	}
1370
1371	static void atfork_parent (void)
1372	{
1373	#if !HAVE_READDIR_R
1374	X_UNLOCK (readdirlock);
1375	#endif
1376	#if !HAVE_PREADWRITE
1377	X_UNLOCK (preadwritelock);
1378	#endif
1379	X_UNLOCK (reslock);
1380	X_UNLOCK (reqlock);
1381	X_UNLOCK (wrklock);
1382	}	484	}
1383		485
1384	static void atfork_child (void)	486	static void atfork_child (void)
1385	{	487	{
1386	aio_req prv;
1387
1388	while (prv = reqq_shift (&req_queue))
1389	req_destroy (prv);
1390
1391	while (prv = reqq_shift (&res_queue))
1392	req_destroy (prv);
1393
1394	while (wrk_first.next != &wrk_first)
1395	{
1396	worker *wrk = wrk_first.next;
1397
1398	if (wrk->req)
1399	req_destroy (wrk->req);
1400
1401	worker_clear (wrk);
1402	worker_free (wrk);
1403	}
1404
1405	started = 0;
1406	idle = 0;
1407	nreqs = 0;
1408	nready = 0;
1409	npending = 0;
1410
1411	create_respipe ();	488	create_respipe ();
		489	}
1412		490
1413	atfork_parent ();	491	static SV *
		492	get_cb (SV *cb_sv)
		493	{
		494	SvGETMAGIC (cb_sv);
		495	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1414	}	496	}
1415		497
1416	#define dREQ \	498	#define dREQ \
		499	SV *cb_cv; \
1417	aio_req req; \	500	aio_req req; \
1418	int req_pri = next_pri; \	501	int req_pri = next_pri; \
1419	next_pri = DEFAULT_PRI + PRI_BIAS; \	502	next_pri = EIO_PRI_DEFAULT; \
1420	\	503	\
1421	if (SvOK (callback) && !SvROK (callback)) \	504	cb_cv = get_cb (callback); \
1422	croak ("callback must be undef or of reference type"); \
1423	\	505	\
1424	Newz (0, req, 1, aio_cb); \	506	Newz (0, req, 1, eio_req); \
1425	if (!req) \	507	if (!req) \
1426	croak ("out of memory during aio_req allocation"); \	508	croak ("out of memory during eio_req allocation"); \
1427	\	509	\
1428	req->callback = newSVsv (callback); \	510	req->callback = SvREFCNT_inc (cb_cv); \
1429	req->pri = req_pri	511	req->pri = req_pri
1430		512
1431	#define REQ_SEND \	513	#define REQ_SEND \
		514	PUTBACK; \
1432	req_send (req); \	515	req_submit (req); \
		516	SPAGAIN; \
1433	\	517	\
1434	if (GIMME_V != G_VOID) \	518	if (GIMME_V != G_VOID) \
1435	XPUSHs (req_sv (req, AIO_REQ_KLASS));	519	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1436		520
1437	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
1438		522
1439	PROTOTYPES: ENABLE	523	PROTOTYPES: ENABLE
1440		524
1441	BOOT:	525	BOOT:
1442	{	526	{
1443	stash = gv_stashpv ("IO::AIO", 1);	527	static const struct {
1444		528	const char *name;
1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	529	IV iv;
1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	530	} *civ, const_iv[] = {
1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	531	# define const_iv(name, value) { # name, (IV) value },
1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	532	# define const_eio(name) { # name, (IV) EIO_ ## name },
1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	533	const_iv (EXDEV , EXDEV)
		534	const_iv (ENOSYS , ENOSYS)
		535	const_iv (O_RDONLY, O_RDONLY)
		536	const_iv (O_WRONLY, O_WRONLY)
		537	const_iv (O_CREAT , O_CREAT)
		538	const_iv (O_TRUNC , O_TRUNC)
1450	#ifdef _WIN32	539	#ifndef _WIN32
1451	X_MUTEX_CHECK (wrklock);	540	const_iv (S_IFIFO , S_IFIFO)
1452	X_MUTEX_CHECK (reslock);
1453	X_MUTEX_CHECK (reqlock);
1454	X_MUTEX_CHECK (reqwait);
1455	X_MUTEX_CHECK (preadwritelock);
1456	X_MUTEX_CHECK (readdirlock);
1457
1458	X_COND_CHECK (reqwait);
1459	#else
1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1462	#endif	541	#endif
		542	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		543	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		544	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		545	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		546	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		547	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1463		548
		549	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		550	const_eio (SYNC_FILE_RANGE_WRITE)
		551	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		552
		553	const_eio (READDIR_DENTS)
		554	const_eio (READDIR_DIRS_FIRST)
		555	const_eio (READDIR_STAT_ORDER)
		556	const_eio (READDIR_FOUND_UNKNOWN)
		557
		558	const_eio (DT_UNKNOWN)
		559	const_eio (DT_FIFO)
		560	const_eio (DT_CHR)
		561	const_eio (DT_DIR)
		562	const_eio (DT_BLK)
		563	const_eio (DT_REG)
		564	const_eio (DT_LNK)
		565	const_eio (DT_SOCK)
		566	const_eio (DT_WHT)
		567	};
		568
		569	stash = gv_stashpv ("IO::AIO", 1);
		570
		571	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		572	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		573
1464	create_respipe ();	574	create_respipe ();
1465		575
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	576	if (eio_init (want_poll, done_poll) < 0)
		577	croak ("IO::AIO: unable to initialise eio library");
		578
		579	/* atfork child called in fifo order, so before eio's handler */
		580	X_THREAD_ATFORK (0, 0, atfork_child);
1467	}	581	}
1468		582
1469	void	583	void
1470	max_poll_reqs (int nreqs)	584	max_poll_reqs (int nreqs)
1471	PROTOTYPE: $	585	PROTOTYPE: $
1472	CODE:	586	CODE:
1473	max_poll_reqs = nreqs;	587	eio_set_max_poll_reqs (nreqs);
1474		588
1475	void	589	void
1476	max_poll_time (double nseconds)	590	max_poll_time (double nseconds)
1477	PROTOTYPE: $	591	PROTOTYPE: $
1478	CODE:	592	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	593	eio_set_max_poll_time (nseconds);
1480		594
1481	void	595	void
1482	min_parallel (int nthreads)	596	min_parallel (int nthreads)
1483	PROTOTYPE: $	597	PROTOTYPE: $
		598	CODE:
		599	eio_set_min_parallel (nthreads);
1484		600
1485	void	601	void
1486	max_parallel (int nthreads)	602	max_parallel (int nthreads)
1487	PROTOTYPE: $	603	PROTOTYPE: $
		604	CODE:
		605	eio_set_max_parallel (nthreads);
1488		606
1489	void	607	void
1490	max_idle (int nthreads)	608	max_idle (int nthreads)
1491	PROTOTYPE: $	609	PROTOTYPE: $
1492	CODE:	610	CODE:
1493	set_max_idle (nthreads);	611	eio_set_max_idle (nthreads);
1494		612
1495	int	613	void
1496	max_outstanding (int maxreqs)	614	max_outstanding (int maxreqs)
1497	PROTOTYPE: $	615	PROTOTYPE: $
1498	CODE:	616	CODE:
1499	RETVAL = max_outstanding;
1500	max_outstanding = maxreqs;	617	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		618
1504	void	619	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	620	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$;$	621	PROTOTYPE: $$$;$
1507	PPCODE:	622	PPCODE:
1508	{	623	{
1509	dREQ;	624	dREQ;
1510		625
1511	req->type = REQ_OPEN;	626	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	627	req->sv1 = newSVsv (pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);	628	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	629	req->int1 = flags;
1515	req->mode = mode;	630	req->int2 = mode;
1516		631
1517	REQ_SEND;	632	REQ_SEND;
1518	}	633	}
1519		634
1520	void	635	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	636	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1522	PROTOTYPE: $;$	637	PROTOTYPE: $;$
1523	ALIAS:	638	ALIAS:
1524	aio_fsync = REQ_FSYNC	639	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	640	aio_fdatasync = EIO_FDATASYNC
1526	PPCODE:	641	PPCODE:
1527	{	642	{
		643	int fd = s_fileno_croak (fh, 0);
1528	dREQ;	644	dREQ;
1529		645
1530	req->type = ix;	646	req->type = ix;
1531	req->sv1 = newSVsv (fh);	647	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	648	req->int1 = fd;
		649
		650	REQ_SEND (req);
		651	}
		652
		653	void
		654	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		655	PROTOTYPE: $$$$;$
		656	PPCODE:
		657	{
		658	int fd = s_fileno_croak (fh, 0);
		659	dREQ;
		660
		661	req->type = EIO_SYNC_FILE_RANGE;
		662	req->sv1 = newSVsv (fh);
		663	req->int1 = fd;
		664	req->offs = offset;
		665	req->size = nbytes;
		666	req->int2 = flags;
1533		667
1534	REQ_SEND (req);	668	REQ_SEND (req);
1535	}	669	}
1536		670
1537	void	671	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	672	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $;$	673	PROTOTYPE: $;$
1540	PPCODE:	674	PPCODE:
1541	{	675	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	676	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1543	int fd = PerlIO_fileno (io);	677	int fd = s_fileno_croak (fh, 0);
1544
1545	if (fd < 0)
1546	croak ("aio_close called with fd-less filehandle");
1547
1548	PerlIO_binmode (aTHX_ io, 0, 0, 0);
1549
1550	{
1551	dREQ;	678	dREQ;
1552		679
		680	if (close_pipe < 0)
		681	{
		682	int pipefd [2];
		683
		684	if (pipe (pipefd) < 0
		685	|| close (pipefd [1]) < 0
		686	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		687	abort (); /*D*/
		688
		689	close_pipe = pipefd [0];
		690	}
		691
1553	req->type = REQ_CLOSE;	692	req->type = EIO_DUP2;
		693	req->int1 = close_pipe;
1554	req->sv1 = newSVsv (fh);	694	req->sv2 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	695	req->int2 = fd;
1556		696
1557	REQ_SEND (req);	697	REQ_SEND (req);
1558	}
1559	}	698	}
1560		699
1561	void	700	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	701	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1563	ALIAS:	702	ALIAS:
1564	aio_read = REQ_READ	703	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	704	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$	705	PROTOTYPE: $$$$$;$
1567	PPCODE:	706	PPCODE:
1568	{	707	{
1569	STRLEN svlen;	708	STRLEN svlen;
		709	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	710	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	711	UV len = SvUV (length);
1572		712
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	713	if (dataoffset < 0)
1577	dataoffset += svlen;	714	dataoffset += svlen;
1578		715
1579	if (dataoffset < 0 || dataoffset > svlen)	716	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	717	croak ("dataoffset outside of data scalar");
1581		718
1582	if (ix == REQ_WRITE)	719	if (ix == EIO_WRITE)
1583	{	720	{
1584	/* write: check length and adjust. */	721	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	722	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	723	len = svlen - dataoffset;
1587	}	724	}
1588	else	725	else
1589	{	726	{
1590	/* read: grow scalar as necessary */	727	/* read: check type and grow scalar as necessary */
		728	SvUPGRADE (data, SVt_PV);
1591	svptr = SvGROW (data, len + dataoffset + 1);	729	svptr = SvGROW (data, len + dataoffset + 1);
1592	}	730	}
1593
1594	if (len < 0)
1595	croak ("length must not be negative");
1596		731
1597	{	732	{
1598	dREQ;	733	dREQ;
1599		734
1600	req->type = ix;	735	req->type = ix;
1601	req->sv1 = newSVsv (fh);	736	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	737	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	739	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	740	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	741	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	742	req->stroffset = dataoffset;
1609		743
1610	if (!SvREADONLY (data))	744	if (!SvREADONLY (data))
1611	{	745	{
1612	SvREADONLY_on (data);	746	SvREADONLY_on (data);
…		…
1623	PPCODE:	757	PPCODE:
1624	{	758	{
1625	SV *data;	759	SV *data;
1626	dREQ;	760	dREQ;
1627		761
1628	data = newSV (NAME_MAX);
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;	762	req->type = EIO_READLINK;
1632	req->sv1 = newSVsv (path);	763	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);	764	req->ptr1 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636		765
1637	REQ_SEND;	766	REQ_SEND;
1638	}	767	}
1639		768
1640	void	769	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	770	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$	771	PROTOTYPE: $$$$;$
1643	PPCODE:	772	PPCODE:
1644	{	773	{
		774	int ifd = s_fileno_croak (in_fh , 0);
		775	int ofd = s_fileno_croak (out_fh, 1);
1645	dREQ;	776	dREQ;
1646		777
1647	req->type = REQ_SENDFILE;	778	req->type = EIO_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);	779	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	780	req->int1 = ofd;
1650	req->sv2 = newSVsv (in_fh);	781	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	782	req->int2 = ifd;
1652	req->offs = SvVAL64 (in_offset);	783	req->offs = in_offset;
1653	req->size = length;	784	req->size = length;
1654		785
1655	REQ_SEND;	786	REQ_SEND;
1656	}	787	}
1657		788
1658	void	789	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	790	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$	791	PROTOTYPE: $$$;$
1661	PPCODE:	792	PPCODE:
1662	{	793	{
		794	int fd = s_fileno_croak (fh, 0);
1663	dREQ;	795	dREQ;
1664		796
1665	req->type = REQ_READAHEAD;	797	req->type = EIO_READAHEAD;
1666	req->sv1 = newSVsv (fh);	798	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	799	req->int1 = fd;
1668	req->offs = SvVAL64 (offset);	800	req->offs = offset;
1669	req->size = length;	801	req->size = length;
1670		802
1671	REQ_SEND;	803	REQ_SEND;
1672	}	804	}
1673		805
1674	void	806	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	807	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:	808	ALIAS:
1677	aio_stat = REQ_STAT	809	aio_stat = EIO_STAT
1678	aio_lstat = REQ_LSTAT	810	aio_lstat = EIO_LSTAT
1679	PPCODE:	811	PPCODE:
1680	{	812	{
1681	dREQ;	813	dREQ;
1682		814
1683	req->ptr2 = malloc (sizeof (Stat_t));
1684	if (!req->ptr2)
1685	{
1686	req_destroy (req);
1687	croak ("out of memory during aio_stat statdata allocation");
1688	}
1689
1690	req->flags |= FLAG_PTR2_FREE;
1691	req->sv1 = newSVsv (fh_or_path);	815	req->sv1 = newSVsv (fh_or_path);
1692		816
1693	if (SvPOK (fh_or_path))	817	if (SvPOK (req->sv1))
1694	{	818	{
1695	req->type = ix;	819	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);	820	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	821	}
1698	else	822	else
1699	{	823	{
1700	req->type = REQ_FSTAT;	824	req->type = EIO_FSTAT;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	825	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1702	}	826	}
1703		827
1704	REQ_SEND;	828	REQ_SEND;
1705	}	829	}
…		…
1712		836
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	837	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	838	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	839	req->sv1 = newSVsv (fh_or_path);
1716		840
1717	if (SvPOK (fh_or_path))	841	if (SvPOK (req->sv1))
1718	{	842	{
1719	req->type = REQ_UTIME;	843	req->type = EIO_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);	844	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}	845	}
1722	else	846	else
1723	{	847	{
1724	req->type = REQ_FUTIME;	848	req->type = EIO_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	849	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}	850	}
1727		851
1728	REQ_SEND;	852	REQ_SEND;
1729	}	853	}
…		…
1735	dREQ;	859	dREQ;
1736		860
1737	req->sv1 = newSVsv (fh_or_path);	861	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	862	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		863
1740	if (SvPOK (fh_or_path))	864	if (SvPOK (req->sv1))
1741	{	865	{
1742	req->type = REQ_TRUNCATE;	866	req->type = EIO_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);	867	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}	868	}
1745	else	869	else
1746	{	870	{
1747	req->type = REQ_FTRUNCATE;	871	req->type = EIO_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	872	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}	873	}
1750		874
1751	REQ_SEND;	875	REQ_SEND;
1752	}	876	}
1753		877
1754	void	878	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	879	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		880	ALIAS:
		881	aio_chmod = EIO_CHMOD
		882	aio_mkdir = EIO_MKDIR
1756	PPCODE:	883	PPCODE:
1757	{	884	{
1758	dREQ;	885	dREQ;
1759		886
1760	req->mode = mode;	887	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	888	req->sv1 = newSVsv (fh_or_path);
1762		889
1763	if (SvPOK (fh_or_path))	890	if (SvPOK (req->sv1))
1764	{	891	{
1765	req->type = REQ_CHMOD;	892	req->type = ix;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);	893	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}	894	}
1768	else	895	else
1769	{	896	{
1770	req->type = REQ_FCHMOD;	897	req->type = EIO_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}	899	}
1773		900
1774	REQ_SEND;	901	REQ_SEND;
1775	}	902	}
…		…
1782		909
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	910	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	911	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	912	req->sv1 = newSVsv (fh_or_path);
1786		913
1787	if (SvPOK (fh_or_path))	914	if (SvPOK (req->sv1))
1788	{	915	{
1789	req->type = REQ_CHOWN;	916	req->type = EIO_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);	917	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}	918	}
1792	else	919	else
1793	{	920	{
1794	req->type = REQ_FCHOWN;	921	req->type = EIO_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	922	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}	923	}
1797		924
1798	REQ_SEND;	925	REQ_SEND;
		926	}
		927
		928	void
		929	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		930	PPCODE:
		931	{
		932	dREQ;
		933
		934	req->type = EIO_READDIR;
		935	req->sv1 = newSVsv (pathname);
		936	req->ptr1 = SvPVbyte_nolen (req->sv1);
		937	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		938
		939	if (flags & EIO_READDIR_DENTS)
		940	req->int1 |= EIO_READDIR_CUSTOM2;
		941
		942	REQ_SEND;
1799	}	943	}
1800		944
1801	void	945	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	946	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1803	ALIAS:	947	ALIAS:
1804	aio_unlink = REQ_UNLINK	948	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	949	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	950	aio_readdir = EIO_READDIR
1807	PPCODE:	951	PPCODE:
1808	{	952	{
1809	dREQ;	953	dREQ;
1810		954
1811	req->type = ix;	955	req->type = ix;
…		…
1814		958
1815	REQ_SEND;	959	REQ_SEND;
1816	}	960	}
1817		961
1818	void	962	void
1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	963	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		964	ALIAS:
		965	aio_link = EIO_LINK
		966	aio_symlink = EIO_SYMLINK
		967	aio_rename = EIO_RENAME
1820	PPCODE:	968	PPCODE:
1821	{	969	{
1822	dREQ;	970	dREQ;
1823		971
		972	req->type = ix;
		973	req->sv1 = newSVsv (oldpath);
		974	req->ptr1 = SvPVbyte_nolen (req->sv1);
		975	req->sv2 = newSVsv (newpath);
		976	req->ptr2 = SvPVbyte_nolen (req->sv2);
		977
		978	REQ_SEND;
		979	}
		980
		981	void
		982	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		983	PPCODE:
		984	{
		985	dREQ;
		986
1824	req->type = REQ_MKDIR;	987	req->type = EIO_MKNOD;
1825	req->sv1 = newSVsv (pathname);	988	req->sv1 = newSVsv (pathname);
1826	req->ptr1 = SvPVbyte_nolen (req->sv1);	989	req->ptr1 = SvPVbyte_nolen (req->sv1);
1827	req->mode = mode;
1828
1829	REQ_SEND;
1830	}
1831
1832	void
1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1834	ALIAS:
1835	aio_link = REQ_LINK
1836	aio_symlink = REQ_SYMLINK
1837	aio_rename = REQ_RENAME
1838	PPCODE:
1839	{
1840	dREQ;
1841
1842	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);
1845	req->sv1 = newSVsv (newpath);
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847
1848	REQ_SEND;
1849	}
1850
1851	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1853	PPCODE:
1854	{
1855	dREQ;
1856
1857	req->type = REQ_MKNOD;
1858	req->sv1 = newSVsv (pathname);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);
1860	req->mode = (mode_t)mode;	990	req->int2 = (mode_t)mode;
1861	req->offs = dev;	991	req->offs = dev;
1862		992
1863	REQ_SEND;	993	REQ_SEND;
1864	}	994	}
1865		995
…		…
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	997	aio_busy (double delay, SV *callback=&PL_sv_undef)
1868	PPCODE:	998	PPCODE:
1869	{	999	{
1870	dREQ;	1000	dREQ;
1871		1001
1872	req->type = REQ_BUSY;	1002	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	1003	req->nv1 = delay < 0. ? 0. : delay;
1874		1004
1875	REQ_SEND;	1005	REQ_SEND;
1876	}	1006	}
1877		1007
…		…
1880	PROTOTYPE: ;$	1010	PROTOTYPE: ;$
1881	PPCODE:	1011	PPCODE:
1882	{	1012	{
1883	dREQ;	1013	dREQ;
1884		1014
1885	req->type = REQ_GROUP;	1015	req->type = EIO_GROUP;
1886		1016
1887	req_send (req);	1017	req_submit (req);
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1018	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1889	}	1019	}
1890		1020
1891	void	1021	void
1892	aio_nop (SV *callback=&PL_sv_undef)	1022	aio_nop (SV *callback=&PL_sv_undef)
		1023	ALIAS:
		1024	aio_nop = EIO_NOP
		1025	aio_sync = EIO_SYNC
1893	PPCODE:	1026	PPCODE:
1894	{	1027	{
1895	dREQ;	1028	dREQ;
1896		1029
1897	req->type = REQ_NOP;	1030	req->type = ix;
1898		1031
1899	REQ_SEND;	1032	REQ_SEND;
1900	}	1033	}
1901		1034
1902	int	1035	int
1903	aioreq_pri (int pri = 0)	1036	aioreq_pri (int pri = 0)
1904	PROTOTYPE: ;$	1037	PROTOTYPE: ;$
1905	CODE:	1038	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	1039	RETVAL = next_pri;
1907	if (items > 0)	1040	if (items > 0)
1908	{	1041	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	1042	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	1043	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	1044	next_pri = pri;
1912	}	1045	}
1913	OUTPUT:	1046	OUTPUT:
1914	RETVAL	1047	RETVAL
1915		1048
1916	void	1049	void
1917	aioreq_nice (int nice = 0)	1050	aioreq_nice (int nice = 0)
1918	CODE:	1051	CODE:
1919	nice = next_pri - nice;	1052	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	1053	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	1054	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	1055	next_pri = nice;
1923		1056
1924	void	1057	void
1925	flush ()	1058	flush ()
1926	PROTOTYPE:	1059	PROTOTYPE:
1927	CODE:	1060	CODE:
1928	while (nreqs)	1061	while (eio_nreqs ())
1929	{	1062	{
1930	poll_wait ();	1063	poll_wait ();
1931	poll_cb ();	1064	poll_cb ();
1932	}	1065	}
1933		1066
…		…
1942		1075
1943	int	1076	int
1944	poll_fileno()	1077	poll_fileno()
1945	PROTOTYPE:	1078	PROTOTYPE:
1946	CODE:	1079	CODE:
1947	RETVAL = respipe [0];	1080	RETVAL = s_epipe_fd (&respipe);
1948	OUTPUT:	1081	OUTPUT:
1949	RETVAL	1082	RETVAL
1950		1083
1951	int	1084	int
1952	poll_cb(...)	1085	poll_cb(...)
…		…
1960	poll_wait()	1093	poll_wait()
1961	PROTOTYPE:	1094	PROTOTYPE:
1962	CODE:	1095	CODE:
1963	poll_wait ();	1096	poll_wait ();
1964		1097
1965	void
1966	setsig (int signum = SIGIO)
1967	PROTOTYPE: ;$
1968	CODE:
1969	{
1970	if (block_sig_level)
1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1972
1973	X_LOCK (reslock);
1974	main_tid = pthread_self ();
1975	main_sig = signum;
1976	X_UNLOCK (reslock);
1977
1978	if (main_sig && npending)
1979	pthread_kill (main_tid, main_sig);
1980	}
1981
1982	void
1983	aio_block (SV *cb)
1984	PROTOTYPE: &
1985	PPCODE:
1986	{
1987	int count;
1988
1989	block_sig ();
1990	PUSHMARK (SP);
1991	PUTBACK;
1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1993	SPAGAIN;
1994	unblock_sig ();
1995
1996	if (SvTRUE (ERRSV))
1997	croak (0);
1998
1999	XSRETURN (count);
2000	}
2001
2002	int	1098	int
2003	nreqs()	1099	nreqs()
2004	PROTOTYPE:	1100	PROTOTYPE:
2005	CODE:	1101	CODE:
2006	RETVAL = nreqs;	1102	RETVAL = eio_nreqs ();
2007	OUTPUT:	1103	OUTPUT:
2008	RETVAL	1104	RETVAL
2009		1105
2010	int	1106	int
2011	nready()	1107	nready()
2012	PROTOTYPE:	1108	PROTOTYPE:
2013	CODE:	1109	CODE:
2014	RETVAL = get_nready ();	1110	RETVAL = eio_nready ();
2015	OUTPUT:	1111	OUTPUT:
2016	RETVAL	1112	RETVAL
2017		1113
2018	int	1114	int
2019	npending()	1115	npending()
2020	PROTOTYPE:	1116	PROTOTYPE:
2021	CODE:	1117	CODE:
2022	RETVAL = get_npending ();	1118	RETVAL = eio_npending ();
2023	OUTPUT:	1119	OUTPUT:
2024	RETVAL	1120	RETVAL
2025		1121
2026	int	1122	int
2027	nthreads()	1123	nthreads()
2028	PROTOTYPE:	1124	PROTOTYPE:
2029	CODE:	1125	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1126	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	1127	OUTPUT:
2034	RETVAL	1128	RETVAL
2035		1129
		1130	int
		1131	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1132	PROTOTYPE: $$$$
		1133	CODE:
		1134	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1135	RETVAL = posix_fadvise (fh, offset, length, advice);
		1136	#else
		1137	RETVAL = errno = ENOSYS;
		1138	#endif
		1139	OUTPUT:
		1140	RETVAL
		1141
		1142	ssize_t
		1143	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1144	PROTOTYPE: $$$$
		1145	CODE:
		1146	eio_sendfile_sync (ofh, ifh, offset, count);
		1147
		1148	void _on_next_submit (SV *cb)
		1149	CODE:
		1150	SvREFCNT_dec (on_next_submit);
		1151	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1152
2036	PROTOTYPES: DISABLE	1153	PROTOTYPES: DISABLE
2037		1154
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1155	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		1156
2040	void	1157	void
2041	cancel (aio_req_ornot req)	1158	cancel (aio_req_ornot req)
2042	CODE:	1159	CODE:
2043	req_cancel (req);	1160	eio_cancel (req);
2044		1161
2045	void	1162	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1163	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2047	CODE:	1164	PPCODE:
		1165	{
		1166	if (GIMME_V != G_VOID)
		1167	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1168
		1169	if (items > 1)
		1170	{
		1171	SV *cb_cv =get_cb (callback);
		1172
2048	SvREFCNT_dec (req->callback);	1173	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	1174	req->callback = SvREFCNT_inc (cb_cv);
		1175	}
		1176	}
2050		1177
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1178	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		1179
2053	void	1180	void
2054	add (aio_req grp, ...)	1181	add (aio_req grp, ...)
2055	PPCODE:	1182	PPCODE:
2056	{	1183	{
2057	int i;	1184	int i;
2058	aio_req req;
2059
2060	if (main_sig && !block_sig_level)
2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2062		1185
2063	if (grp->int1 == 2)	1186	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1187	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		1188
2066	for (i = 1; i < items; ++i )	1189	for (i = 1; i < items; ++i )
2067	{	1190	{
		1191	aio_req req;
		1192
2068	if (GIMME_V != G_VOID)	1193	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1194	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		1195
2071	req = SvAIO_REQ (ST (i));	1196	req = SvAIO_REQ (ST (i));
2072		1197
2073	if (req)	1198	if (req)
2074	{	1199	eio_grp_add (grp, req);
2075	++grp->size;
2076	req->grp = grp;
2077
2078	req->grp_prev = 0;
2079	req->grp_next = grp->grp_first;
2080
2081	if (grp->grp_first)
2082	grp->grp_first->grp_prev = req;
2083
2084	grp->grp_first = req;
2085	}
2086	}	1200	}
2087	}	1201	}
2088		1202
2089	void	1203	void
2090	cancel_subs (aio_req_ornot req)	1204	cancel_subs (aio_req_ornot req)
…		…
2099	AV *av;	1213	AV *av;
2100		1214
2101	grp->errorno = errno;	1215	grp->errorno = errno;
2102		1216
2103	av = newAV ();	1217	av = newAV ();
		1218	av_extend (av, items - 1);
2104		1219
2105	for (i = 1; i < items; ++i )	1220	for (i = 1; i < items; ++i )
2106	av_push (av, newSVsv (ST (i)));	1221	av_push (av, newSVsv (ST (i)));
2107		1222
2108	SvREFCNT_dec (grp->sv1);	1223	SvREFCNT_dec (grp->sv1);
…		…
2115	grp->errorno = errorno;	1230	grp->errorno = errorno;
2116		1231
2117	void	1232	void
2118	limit (aio_req grp, int limit)	1233	limit (aio_req grp, int limit)
2119	CODE:	1234	CODE:
2120	grp->int2 = limit;	1235	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		1236
2123	void	1237	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	1238	feed (aio_req grp, SV *callback=&PL_sv_undef)
2125	CODE:	1239	CODE:
2126	{	1240	{
2127	SvREFCNT_dec (grp->sv2);	1241	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	1242	grp->sv2 = newSVsv (callback);
		1243	grp->feed = aio_grp_feed;
2129		1244
2130	if (grp->int2 <= 0)	1245	if (grp->int2 <= 0)
2131	grp->int2 = 2;	1246	grp->int2 = 2;
2132		1247
2133	aio_grp_feed (grp);	1248	eio_grp_limit (grp, grp->int2);
2134	}	1249	}
2135		1250

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