[ViewVC] Diff of: cvs/libeio/eio.c

Comparing libeio/eio.c (file contents):
Revision 1.2 by root, Sat May 10 23:33:40 2008 UTC vs.
Revision 1.18 by root, Mon Jun 16 12:19:55 2008 UTC

…		…
		1	/*
		2	* libeio implementation
		3	*
		4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without modifica-
		8	* tion, are permitted provided that the following conditions are met:
		9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*
		28	* Alternatively, the contents of this file may be used under the terms of
		29	* the GNU General Public License ("GPL") version 2 or any later version,
		30	* in which case the provisions of the GPL are applicable instead of
		31	* the above. If you wish to allow the use of your version of this file
		32	* only under the terms of the GPL and not to allow others to use your
		33	* version of this file under the BSD license, indicate your decision
		34	* by deleting the provisions above and replace them with the notice
		35	* and other provisions required by the GPL. If you do not delete the
		36	* provisions above, a recipient may use your version of this file under
		37	* either the BSD or the GPL.
		38	*/
		39
1	#include "eio.h"	40	#include "eio.h"
2	#include "xthread.h"	41	#include "xthread.h"
3		42
4	#include <errno.h>	43	#include <errno.h>
5
6	#include "EXTERN.h"
7	#include "perl.h"
8	#include "XSUB.h"
9
10	#include <stddef.h>	44	#include <stddef.h>
11	#include <stdlib.h>	45	#include <stdlib.h>
		46	#include <string.h>
12	#include <errno.h>	47	#include <errno.h>
13	#include <sys/types.h>	48	#include <sys/types.h>
14	#include <sys/stat.h>	49	#include <sys/stat.h>
15	#include <limits.h>	50	#include <limits.h>
16	#include <fcntl.h>	51	#include <fcntl.h>
17	#include <sched.h>	52	#include <assert.h>
18		53
19	#ifndef EIO_FINISH	54	#ifndef EIO_FINISH
20	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0	55	# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
21	#endif	56	#endif
22		57
38	# include <sys/time.h>	73	# include <sys/time.h>
39	# include <sys/select.h>	74	# include <sys/select.h>
40	# include <unistd.h>	75	# include <unistd.h>
41	# include <utime.h>	76	# include <utime.h>
42	# include <signal.h>	77	# include <signal.h>
		78	# include <dirent.h>
43		79
44	# ifndef EIO_STRUCT_DIRENT	80	# ifndef EIO_STRUCT_DIRENT
45	# define EIO_STRUCT_DIRENT struct dirent	81	# define EIO_STRUCT_DIRENT struct dirent
46	# endif	82	# endif
47		83
48	#endif	84	#endif
49
50	# ifndef EIO_STRUCT_STAT
51	# define EIO_STRUCT_STAT struct stat
52	# endif
53		85
54	#if HAVE_SENDFILE	86	#if HAVE_SENDFILE
55	# if __linux	87	# if __linux
56	# include <sys/sendfile.h>	88	# include <sys/sendfile.h>
57	# elif __freebsd	89	# elif __freebsd
…		…
77	/* buffer size for various temporary buffers */	109	/* buffer size for various temporary buffers */
78	#define EIO_BUFSIZE 65536	110	#define EIO_BUFSIZE 65536
79		111
80	#define dBUF \	112	#define dBUF \
81	char *eio_buf; \	113	char *eio_buf; \
82	X_LOCK (wrklock); \	114	ETP_WORKER_LOCK (self); \
83	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \	115	self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \
84	X_UNLOCK (wrklock); \	116	ETP_WORKER_UNLOCK (self); \
		117	errno = ENOMEM; \
85	if (!eio_buf) \	118	if (!eio_buf) \
86	return -1;	119	return -1;
87		120
88	#define EIO_TICKS ((1000000 + 1023) >> 10)	121	#define EIO_TICKS ((1000000 + 1023) >> 10)
89		122
		123	/*****************************************************************************/
		124
		125	#define ETP_PRI_MIN EIO_PRI_MIN
		126	#define ETP_PRI_MAX EIO_PRI_MAX
		127
		128	struct etp_worker;
		129
		130	#define ETP_REQ eio_req
		131	#define ETP_DESTROY(req) eio_destroy (req)
		132	static int eio_finish (eio_req *req);
		133	#define ETP_FINISH(req) eio_finish (req)
		134	static void eio_execute (struct etp_worker self, eio_req req);
		135	#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
		136
		137	#define ETP_WORKER_CLEAR(req) \
		138	if (wrk->dbuf) \
		139	{ \
		140	free (wrk->dbuf); \
		141	wrk->dbuf = 0; \
		142	} \
		143	\
		144	if (wrk->dirp) \
		145	{ \
		146	closedir (wrk->dirp); \
		147	wrk->dirp = 0; \
		148	}
		149	#define ETP_WORKER_COMMON \
		150	void *dbuf; \
		151	DIR *dirp;
		152
		153	/*****************************************************************************/
		154
		155	#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
		156
		157	/* calculcate time difference in ~1/EIO_TICKS of a second */
		158	static int tvdiff (struct timeval tv1, struct timeval tv2)
		159	{
		160	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
		161	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		162	}
		163
		164	static unsigned int started, idle, wanted = 4;
		165
90	static void (*want_poll_cb) (void);	166	static void (*want_poll_cb) (void);
91	static void (*done_poll_cb) (void);	167	static void (*done_poll_cb) (void);
92		168
93	static unsigned int max_poll_time = 0;	169	static unsigned int max_poll_time; /* reslock */
94	static unsigned int max_poll_reqs = 0;	170	static unsigned int max_poll_reqs; /* reslock */
95		171
96	/* calculcate time difference in ~1/EIO_TICKS of a second */	172	static volatile unsigned int nreqs; /* reqlock */
97	static int tvdiff (struct timeval tv1, struct timeval tv2)	173	static volatile unsigned int nready; /* reqlock */
98	{	174	static volatile unsigned int npending; /* reqlock */
99	return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS	175	static volatile unsigned int max_idle = 4;
100	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
101	}
102		176
103	static unsigned int started, idle, wanted;
104
105	/* worker threads management */
106	static mutex_t wrklock = X_MUTEX_INIT;	177	static mutex_t wrklock = X_MUTEX_INIT;
107
108	typedef struct worker {
109	/* locked by wrklock */
110	struct worker prev, next;
111
112	thread_t tid;
113
114	/* locked by reslock, reqlock or wrklock */
115	eio_req req; / currently processed request */
116	void *dbuf;
117	DIR *dirp;
118	} worker;
119
120	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
121
122	static void worker_clear (worker *wrk)
123	{
124	if (wrk->dirp)
125	{
126	closedir (wrk->dirp);
127	wrk->dirp = 0;
128	}
129
130	if (wrk->dbuf)
131	{
132	free (wrk->dbuf);
133	wrk->dbuf = 0;
134	}
135	}
136
137	static void worker_free (worker *wrk)
138	{
139	wrk->next->prev = wrk->prev;
140	wrk->prev->next = wrk->next;
141
142	free (wrk);
143	}
144
145	static volatile unsigned int nreqs, nready, npending;
146	static volatile unsigned int max_idle = 4;
147
148	static mutex_t reslock = X_MUTEX_INIT;	178	static mutex_t reslock = X_MUTEX_INIT;
149	static mutex_t reqlock = X_MUTEX_INIT;	179	static mutex_t reqlock = X_MUTEX_INIT;
150	static cond_t reqwait = X_COND_INIT;	180	static cond_t reqwait = X_COND_INIT;
151		181
		182	typedef struct etp_worker
		183	{
		184	/* locked by wrklock */
		185	struct etp_worker prev, next;
		186
		187	thread_t tid;
		188
		189	/* locked by reslock, reqlock or wrklock */
		190	ETP_REQ req; / currently processed request */
		191
		192	ETP_WORKER_COMMON
		193	} etp_worker;
		194
		195	static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
		196
		197	#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
		198	#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
		199
		200	/* worker threads management */
		201
		202	static void etp_worker_clear (etp_worker *wrk)
		203	{
		204	ETP_WORKER_CLEAR (wrk);
		205	}
		206
		207	static void etp_worker_free (etp_worker *wrk)
		208	{
		209	wrk->next->prev = wrk->prev;
		210	wrk->prev->next = wrk->next;
		211
		212	free (wrk);
		213	}
		214
152	unsigned int eio_nreqs (void)	215	static unsigned int etp_nreqs (void)
153	{	216	{
		217	int retval;
		218	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		219	retval = nreqs;
		220	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
154	return nreqs;	221	return retval;
155	}	222	}
156		223
157	unsigned int eio_nready (void)	224	static unsigned int etp_nready (void)
158	{	225	{
159	unsigned int retval;	226	unsigned int retval;
160		227
161	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	228	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
162	retval = nready;	229	retval = nready;
163	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	230	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
164		231
165	return retval;	232	return retval;
166	}	233	}
167		234
168	unsigned int eio_npending (void)	235	static unsigned int etp_npending (void)
169	{	236	{
170	unsigned int retval;	237	unsigned int retval;
171		238
172	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	239	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
173	retval = npending;	240	retval = npending;
174	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);	241	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
175		242
176	return retval;	243	return retval;
177	}	244	}
178		245
179	unsigned int eio_nthreads (void)	246	static unsigned int etp_nthreads (void)
180	{	247	{
181	unsigned int retval;	248	unsigned int retval;
182		249
183	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);	250	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
184	retval = started;	251	retval = started;
…		…
191	* a somewhat faster data structure might be nice, but	258	* a somewhat faster data structure might be nice, but
192	* with 8 priorities this actually needs <20 insns	259	* with 8 priorities this actually needs <20 insns
193	* per shift, the most expensive operation.	260	* per shift, the most expensive operation.
194	*/	261	*/
195	typedef struct {	262	typedef struct {
196	eio_req qs[EIO_NUM_PRI], qe[EIO_NUM_PRI]; /* qstart, qend */	263	ETP_REQ qs[ETP_NUM_PRI], qe[ETP_NUM_PRI]; /* qstart, qend */
197	int size;	264	int size;
198	} reqq;	265	} etp_reqq;
199		266
200	static reqq req_queue;	267	static etp_reqq req_queue;
201	static reqq res_queue;	268	static etp_reqq res_queue;
202		269
203	static int reqq_push (reqq q, eio_req req)	270	static int reqq_push (etp_reqq q, ETP_REQ req)
204	{	271	{
205	int pri = req->pri;	272	int pri = req->pri;
206	req->next = 0;	273	req->next = 0;
207		274
208	if (q->qe[pri])	275	if (q->qe[pri])
…		…
214	q->qe[pri] = q->qs[pri] = req;	281	q->qe[pri] = q->qs[pri] = req;
215		282
216	return q->size++;	283	return q->size++;
217	}	284	}
218		285
219	static eio_req reqq_shift (reqq q)	286	static ETP_REQ reqq_shift (etp_reqq q)
220	{	287	{
221	int pri;	288	int pri;
222		289
223	if (!q->size)	290	if (!q->size)
224	return 0;	291	return 0;
225		292
226	--q->size;	293	--q->size;
227		294
228	for (pri = EIO_NUM_PRI; pri--; )	295	for (pri = ETP_NUM_PRI; pri--; )
229	{	296	{
230	eio_req *req = q->qs[pri];	297	eio_req *req = q->qs[pri];
231		298
232	if (req)	299	if (req)
233	{	300	{
…		…
239	}	306	}
240		307
241	abort ();	308	abort ();
242	}	309	}
243		310
244	static void grp_try_feed (eio_req *grp)	311	static void etp_atfork_prepare (void)
245	{	312	{
246	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))	313	X_LOCK (wrklock);
		314	X_LOCK (reqlock);
		315	X_LOCK (reslock);
		316	#if !HAVE_PREADWRITE
		317	X_LOCK (preadwritelock);
		318	#endif
		319	}
		320
		321	static void etp_atfork_parent (void)
		322	{
		323	#if !HAVE_PREADWRITE
		324	X_UNLOCK (preadwritelock);
		325	#endif
		326	X_UNLOCK (reslock);
		327	X_UNLOCK (reqlock);
		328	X_UNLOCK (wrklock);
		329	}
		330
		331	static void etp_atfork_child (void)
		332	{
		333	ETP_REQ *prv;
		334
		335	while (prv = reqq_shift (&req_queue))
		336	ETP_DESTROY (prv);
		337
		338	while (prv = reqq_shift (&res_queue))
		339	ETP_DESTROY (prv);
		340
		341	while (wrk_first.next != &wrk_first)
247	{	342	{
248	int old_len = grp->size;	343	etp_worker *wrk = wrk_first.next;
249		344
250	EIO_FEED (grp);	345	if (wrk->req)
		346	ETP_DESTROY (wrk->req);
251		347
252	/* stop if no progress has been made */	348	etp_worker_clear (wrk);
253	if (old_len == grp->size)	349	etp_worker_free (wrk);
254	{
255	grp->feed = 0;
256	break;
257	}
258	}
259	}
260
261	static int eio_finish (eio_req *req);
262
263	static int grp_dec (eio_req *grp)
264	{
265	--grp->size;
266
267	/* call feeder, if applicable */
268	grp_try_feed (grp);
269
270	/* finish, if done */
271	if (!grp->size && grp->int1)
272	return eio_finish (grp);
273	else
274	return 0;
275	}
276
277	void eio_destroy (eio_req *req)
278	{
279	if ((req)->flags & EIO_FLAG_PTR2_FREE)
280	free (req->ptr2);
281
282	EIO_DESTROY (req);
283	}
284
285	static int eio_finish (eio_req *req)
286	{
287	int res = EIO_FINISH (req);
288
289	if (req->grp)
290	{	350	}
291	int res2;
292	eio_req *grp = req->grp;
293		351
294	/* unlink request */	352	started = 0;
295	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;	353	idle = 0;
296	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;	354	nreqs = 0;
		355	nready = 0;
		356	npending = 0;
297		357
298	if (grp->grp_first == req)	358	etp_atfork_parent ();
299	grp->grp_first = req->grp_next;
300
301	res2 = grp_dec (grp);
302
303	if (!res && res2)
304	res = res2;
305	}
306
307	eio_destroy (req);
308
309	return res;
310	}	359	}
311		360
312	void eio_grp_cancel (eio_req *grp)	361	static void
313	{	362	etp_once_init (void)
314	for (grp = grp->grp_first; grp; grp = grp->grp_next)	363	{
315	eio_cancel (grp);	364	X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
316	}	365	}
317		366
318	void eio_cancel (eio_req *req)	367	static int
		368	etp_init (void (want_poll)(void), void (done_poll)(void))
319	{	369	{
320	req->flags \|= EIO_FLAG_CANCELLED;	370	static pthread_once_t doinit = PTHREAD_ONCE_INIT;
321		371
322	eio_grp_cancel (req);	372	pthread_once (&doinit, etp_once_init);
323	}
324		373
		374	want_poll_cb = want_poll;
		375	done_poll_cb = done_poll;
		376	}
		377
325	X_THREAD_PROC (eio_proc);	378	X_THREAD_PROC (etp_proc);
326		379
327	static void start_thread (void)	380	static void etp_start_thread (void)
328	{	381	{
329	worker *wrk = calloc (1, sizeof (worker));	382	etp_worker *wrk = calloc (1, sizeof (etp_worker));
330		383
331	if (!wrk)	384	/TODO/
332	croak ("unable to allocate worker thread data");	385	assert (("unable to allocate worker thread data", wrk));
333		386
334	X_LOCK (wrklock);	387	X_LOCK (wrklock);
335		388
336	if (thread_create (&wrk->tid, eio_proc, (void *)wrk))	389	if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
337	{	390	{
338	wrk->prev = &wrk_first;	391	wrk->prev = &wrk_first;
339	wrk->next = wrk_first.next;	392	wrk->next = wrk_first.next;
340	wrk_first.next->prev = wrk;	393	wrk_first.next->prev = wrk;
341	wrk_first.next = wrk;	394	wrk_first.next = wrk;
…		…
345	free (wrk);	398	free (wrk);
346		399
347	X_UNLOCK (wrklock);	400	X_UNLOCK (wrklock);
348	}	401	}
349		402
350	static void maybe_start_thread (void)	403	static void etp_maybe_start_thread (void)
351	{	404	{
352	if (eio_nthreads () >= wanted)	405	if (etp_nthreads () >= wanted)
353	return;	406	return;
354		407
355	/* todo: maybe use idle here, but might be less exact */	408	/* todo: maybe use idle here, but might be less exact */
356	if (0 <= (int)eio_nthreads () + (int)eio_npending () - (int)eio_nreqs ())	409	if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())
357	return;	410	return;
358		411
359	start_thread ();	412	etp_start_thread ();
360	}	413	}
361		414
362	void eio_submit (eio_req *req)
363	{
364	++nreqs;
365
366	X_LOCK (reqlock);
367	++nready;
368	reqq_push (&req_queue, req);
369	X_COND_SIGNAL (reqwait);
370	X_UNLOCK (reqlock);
371
372	maybe_start_thread ();
373	}
374
375	static void end_thread (void)	415	static void etp_end_thread (void)
376	{	416	{
377	eio_req *req = calloc (1, sizeof (eio_req));	417	eio_req *req = calloc (1, sizeof (eio_req));
378		418
379	req->type = EIO_QUIT;	419	req->type = -1;
380	req->pri = EIO_PRI_MAX + EIO_PRI_BIAS;	420	req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
381		421
382	X_LOCK (reqlock);	422	X_LOCK (reqlock);
383	reqq_push (&req_queue, req);	423	reqq_push (&req_queue, req);
384	X_COND_SIGNAL (reqwait);	424	X_COND_SIGNAL (reqwait);
385	X_UNLOCK (reqlock);	425	X_UNLOCK (reqlock);
…		…
387	X_LOCK (wrklock);	427	X_LOCK (wrklock);
388	--started;	428	--started;
389	X_UNLOCK (wrklock);	429	X_UNLOCK (wrklock);
390	}	430	}
391		431
392	void eio_set_max_poll_time (double nseconds)
393	{
394	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
395	max_poll_time = nseconds;
396	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
397	}
398
399	void eio_set_max_poll_reqs (unsigned int maxreqs)
400	{
401	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
402	max_poll_reqs = maxreqs;
403	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
404	}
405
406	void eio_set_max_idle (unsigned int nthreads)
407	{
408	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
409	max_idle = nthreads <= 0 ? 1 : nthreads;
410	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
411	}
412
413	void eio_set_min_parallel (unsigned int nthreads)
414	{
415	if (wanted < nthreads)
416	wanted = nthreads;
417	}
418
419	void eio_set_max_parallel (unsigned int nthreads)
420	{
421	if (wanted > nthreads)
422	wanted = nthreads;
423
424	while (started > wanted)
425	end_thread ();
426	}
427
428	int eio_poll (void)	432	static int etp_poll (void)
429	{	433	{
430	int maxreqs = max_poll_reqs;	434	unsigned int maxreqs;
		435	unsigned int maxtime;
431	struct timeval tv_start, tv_now;	436	struct timeval tv_start, tv_now;
432	eio_req *req;
433		437
		438	X_LOCK (reslock);
		439	maxreqs = max_poll_reqs;
		440	maxtime = max_poll_time;
		441	X_UNLOCK (reslock);
		442
434	if (max_poll_time)	443	if (maxtime)
435	gettimeofday (&tv_start, 0);	444	gettimeofday (&tv_start, 0);
436		445
437	for (;;)	446	for (;;)
438	{	447	{
		448	ETP_REQ *req;
		449
439	maybe_start_thread ();	450	etp_maybe_start_thread ();
440		451
441	X_LOCK (reslock);	452	X_LOCK (reslock);
442	req = reqq_shift (&res_queue);	453	req = reqq_shift (&res_queue);
443		454
444	if (req)	455	if (req)
…		…
452	X_UNLOCK (reslock);	463	X_UNLOCK (reslock);
453		464
454	if (!req)	465	if (!req)
455	return 0;	466	return 0;
456		467
		468	X_LOCK (reqlock);
457	--nreqs;	469	--nreqs;
		470	X_UNLOCK (reqlock);
458		471
459	if (req->type == EIO_GROUP && req->size)	472	if (req->type == EIO_GROUP && req->size)
460	{	473	{
461	req->int1 = 1; /* mark request as delayed */	474	req->int1 = 1; /* mark request as delayed */
462	continue;	475	continue;
463	}	476	}
464	else	477	else
465	{	478	{
466	int res = eio_finish (req);	479	int res = ETP_FINISH (req);
467	if (res)	480	if (res)
468	return res;	481	return res;
469	}	482	}
470		483
471	if (maxreqs && !--maxreqs)	484	if (maxreqs && !--maxreqs)
472	break;	485	break;
473		486
474	if (max_poll_time)	487	if (maxtime)
475	{	488	{
476	gettimeofday (&tv_now, 0);	489	gettimeofday (&tv_now, 0);
477		490
478	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)	491	if (tvdiff (&tv_start, &tv_now) >= maxtime)
479	break;	492	break;
480	}	493	}
481	}	494	}
482		495
483	errno = EAGAIN;	496	errno = EAGAIN;
484	return -1;	497	return -1;
485	}	498	}
486		499
		500	static void etp_cancel (ETP_REQ *req)
		501	{
		502	X_LOCK (wrklock);
		503	req->flags \|= EIO_FLAG_CANCELLED;
		504	X_UNLOCK (wrklock);
		505
		506	eio_grp_cancel (req);
		507	}
		508
		509	static void etp_submit (ETP_REQ *req)
		510	{
		511	req->pri -= ETP_PRI_MIN;
		512
		513	if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
		514	if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
		515
		516	X_LOCK (reqlock);
		517	++nreqs;
		518	++nready;
		519	reqq_push (&req_queue, req);
		520	X_COND_SIGNAL (reqwait);
		521	X_UNLOCK (reqlock);
		522
		523	etp_maybe_start_thread ();
		524	}
		525
		526	static void etp_set_max_poll_time (double nseconds)
		527	{
		528	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		529	max_poll_time = nseconds;
		530	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		531	}
		532
		533	static void etp_set_max_poll_reqs (unsigned int maxreqs)
		534	{
		535	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		536	max_poll_reqs = maxreqs;
		537	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		538	}
		539
		540	static void etp_set_max_idle (unsigned int nthreads)
		541	{
		542	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		543	max_idle = nthreads <= 0 ? 1 : nthreads;
		544	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
		545	}
		546
		547	static void etp_set_min_parallel (unsigned int nthreads)
		548	{
		549	if (wanted < nthreads)
		550	wanted = nthreads;
		551	}
		552
		553	static void etp_set_max_parallel (unsigned int nthreads)
		554	{
		555	if (wanted > nthreads)
		556	wanted = nthreads;
		557
		558	while (started > wanted)
		559	etp_end_thread ();
		560	}
		561
		562	/*****************************************************************************/
		563
		564	static void grp_try_feed (eio_req *grp)
		565	{
		566	while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
		567	{
		568	int old_len = grp->size;
		569
		570	EIO_FEED (grp);
		571
		572	/* stop if no progress has been made */
		573	if (old_len == grp->size)
		574	{
		575	grp->feed = 0;
		576	break;
		577	}
		578	}
		579	}
		580
		581	static int grp_dec (eio_req *grp)
		582	{
		583	--grp->size;
		584
		585	/* call feeder, if applicable */
		586	grp_try_feed (grp);
		587
		588	/* finish, if done */
		589	if (!grp->size && grp->int1)
		590	return eio_finish (grp);
		591	else
		592	return 0;
		593	}
		594
		595	void eio_destroy (eio_req *req)
		596	{
		597	if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
		598	if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
		599
		600	EIO_DESTROY (req);
		601	}
		602
		603	static int eio_finish (eio_req *req)
		604	{
		605	int res = EIO_FINISH (req);
		606
		607	if (req->grp)
		608	{
		609	int res2;
		610	eio_req *grp = req->grp;
		611
		612	/* unlink request */
		613	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		614	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		615
		616	if (grp->grp_first == req)
		617	grp->grp_first = req->grp_next;
		618
		619	res2 = grp_dec (grp);
		620
		621	if (!res && res2)
		622	res = res2;
		623	}
		624
		625	eio_destroy (req);
		626
		627	return res;
		628	}
		629
		630	void eio_grp_cancel (eio_req *grp)
		631	{
		632	for (grp = grp->grp_first; grp; grp = grp->grp_next)
		633	eio_cancel (grp);
		634	}
		635
		636	void eio_cancel (eio_req *req)
		637	{
		638	etp_cancel (req);
		639	}
		640
		641	void eio_submit (eio_req *req)
		642	{
		643	etp_submit (req);
		644	}
		645
		646	unsigned int eio_nreqs (void)
		647	{
		648	return etp_nreqs ();
		649	}
		650
		651	unsigned int eio_nready (void)
		652	{
		653	return etp_nready ();
		654	}
		655
		656	unsigned int eio_npending (void)
		657	{
		658	return etp_npending ();
		659	}
		660
		661	unsigned int eio_nthreads (void)
		662	{
		663	return etp_nthreads ();
		664	}
		665
		666	void eio_set_max_poll_time (double nseconds)
		667	{
		668	etp_set_max_poll_time (nseconds);
		669	}
		670
		671	void eio_set_max_poll_reqs (unsigned int maxreqs)
		672	{
		673	etp_set_max_poll_reqs (maxreqs);
		674	}
		675
		676	void eio_set_max_idle (unsigned int nthreads)
		677	{
		678	etp_set_max_idle (nthreads);
		679	}
		680
		681	void eio_set_min_parallel (unsigned int nthreads)
		682	{
		683	etp_set_min_parallel (nthreads);
		684	}
		685
		686	void eio_set_max_parallel (unsigned int nthreads)
		687	{
		688	etp_set_max_parallel (nthreads);
		689	}
		690
		691	int eio_poll (void)
		692	{
		693	return etp_poll ();
		694	}
		695
487	/*****************************************************************************/	696	/*****************************************************************************/
488	/* work around various missing functions */	697	/* work around various missing functions */
489		698
490	#if !HAVE_PREADWRITE	699	#if !HAVE_PREADWRITE
491	# define pread aio_pread	700	# define pread eio__pread
492	# define pwrite aio_pwrite	701	# define pwrite eio__pwrite
493		702
494	/*	703	/*
495	* make our pread/pwrite safe against themselves, but not against	704	* make our pread/pwrite safe against themselves, but not against
496	* normal read/write by using a mutex. slows down execution a lot,	705	* normal read/write by using a mutex. slows down execution a lot,
497	* but that's your problem, not mine.	706	* but that's your problem, not mine.
498	*/	707	*/
499	static mutex_t preadwritelock = X_MUTEX_INIT;	708	static mutex_t preadwritelock = X_MUTEX_INIT;
500		709
501	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	710	static ssize_t
		711	eio__pread (int fd, void *buf, size_t count, off_t offset)
502	{	712	{
503	ssize_t res;	713	ssize_t res;
504	off_t ooffset;	714	off_t ooffset;
505		715
506	X_LOCK (preadwritelock);	716	X_LOCK (preadwritelock);
…		…
511	X_UNLOCK (preadwritelock);	721	X_UNLOCK (preadwritelock);
512		722
513	return res;	723	return res;
514	}	724	}
515		725
516	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	726	static ssize_t
		727	eio__pwrite (int fd, void *buf, size_t count, off_t offset)
517	{	728	{
518	ssize_t res;	729	ssize_t res;
519	off_t ooffset;	730	off_t ooffset;
520		731
521	X_LOCK (preadwritelock);	732	X_LOCK (preadwritelock);
…		…
529	}	740	}
530	#endif	741	#endif
531		742
532	#ifndef HAVE_FUTIMES	743	#ifndef HAVE_FUTIMES
533		744
534	# define utimes(path,times) aio_utimes (path, times)	745	# define utimes(path,times) eio__utimes (path, times)
535	# define futimes(fd,times) aio_futimes (fd, times)	746	# define futimes(fd,times) eio__futimes (fd, times)
536		747
		748	static int
537	static int aio_utimes (const char *filename, const struct timeval times[2])	749	eio__utimes (const char *filename, const struct timeval times[2])
538	{	750	{
539	if (times)	751	if (times)
540	{	752	{
541	struct utimbuf buf;	753	struct utimbuf buf;
542		754
…		…
547	}	759	}
548	else	760	else
549	return utime (filename, 0);	761	return utime (filename, 0);
550	}	762	}
551		763
552	static int aio_futimes (int fd, const struct timeval tv[2])	764	static int eio__futimes (int fd, const struct timeval tv[2])
553	{	765	{
554	errno = ENOSYS;	766	errno = ENOSYS;
555	return -1;	767	return -1;
556	}	768	}
557		769
…		…
560	#if !HAVE_FDATASYNC	772	#if !HAVE_FDATASYNC
561	# define fdatasync fsync	773	# define fdatasync fsync
562	#endif	774	#endif
563		775
564	#if !HAVE_READAHEAD	776	#if !HAVE_READAHEAD
565	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	777	# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
566		778
		779	static ssize_t
567	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	780	eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
568	{	781	{
569	size_t todo = count;	782	size_t todo = count;
570	dBUF;	783	dBUF;
571		784
572	while (todo > 0)	785	while (todo > 0)
573	{	786	{
574	size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE;	787	size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE;
575		788
576	pread (fd, aio_buf, len, offset);	789	pread (fd, eio_buf, len, offset);
577	offset += len;	790	offset += len;
578	todo -= len;	791	todo -= len;
579	}	792	}
580		793
581	errno = 0;	794	errno = 0;
582	return count;	795	return count;
583	}	796	}
584		797
585	#endif	798	#endif
586		799
587	#if !HAVE_READDIR_R
588	# define readdir_r aio_readdir_r
589
590	static mutex_t readdirlock = X_MUTEX_INIT;
591
592	static int readdir_r (DIR dirp, X_DIRENT ent, X_DIRENT **res)
593	{
594	X_DIRENT *e;
595	int errorno;
596
597	X_LOCK (readdirlock);
598
599	e = readdir (dirp);
600	errorno = errno;
601
602	if (e)
603	{
604	*res = ent;
605	strcpy (ent->d_name, e->d_name);
606	}
607	else
608	*res = 0;
609
610	X_UNLOCK (readdirlock);
611
612	errno = errorno;
613	return e ? 0 : -1;
614	}
615	#endif
616
617	/* sendfile always needs emulation */	800	/* sendfile always needs emulation */
		801	static ssize_t
618	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)	802	eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
619	{	803	{
620	ssize_t res;	804	ssize_t res;
621		805
622	if (!count)	806	if (!count)
623	return 0;	807	return 0;
…		…
706		890
707	return res;	891	return res;
708	}	892	}
709		893
710	/* read a full directory */	894	/* read a full directory */
		895	static void
711	static void scandir_ (eio_req req, worker self)	896	eio__scandir (eio_req req, etp_worker self)
712	{	897	{
713	DIR *dirp;	898	DIR *dirp;
714	union
715	{
716	EIO_STRUCT_DIRENT d;
717	char b [offsetof (EIO_STRUCT_DIRENT, d_name) + NAME_MAX + 1];
718	} *u;
719	EIO_STRUCT_DIRENT *entp;	899	EIO_STRUCT_DIRENT *entp;
720	char name, names;	900	char name, names;
721	int memlen = 4096;	901	int memlen = 4096;
722	int memofs = 0;	902	int memofs = 0;
723	int res = 0;	903	int res = 0;
724		904
725	X_LOCK (wrklock);	905	X_LOCK (wrklock);
726	self->dirp = dirp = opendir (req->ptr1);	906	self->dirp = dirp = opendir (req->ptr1);
727	self->dbuf = u = malloc (sizeof (*u));
728	req->flags \|= EIO_FLAG_PTR2_FREE;	907	req->flags \|= EIO_FLAG_PTR2_FREE;
729	req->ptr2 = names = malloc (memlen);	908	req->ptr2 = names = malloc (memlen);
730	X_UNLOCK (wrklock);	909	X_UNLOCK (wrklock);
731		910
732	if (dirp && u && names)	911	if (dirp && names)
733	for (;;)	912	for (;;)
734	{	913	{
735	errno = 0;	914	errno = 0;
736	readdir_r (dirp, &u->d, &entp);	915	entp = readdir (dirp);
737		916
738	if (!entp)	917	if (!entp)
739	break;	918	break;
740		919
741	name = entp->d_name;	920	name = entp->d_name;
…		…
768	req->result = res;	947	req->result = res;
769	}	948	}
770		949
771	/*****************************************************************************/	950	/*****************************************************************************/
772		951
		952	#define ALLOC(len) \
		953	if (!req->ptr2) \
		954	{ \
		955	X_LOCK (wrklock); \
		956	req->flags \|= EIO_FLAG_PTR2_FREE; \
		957	X_UNLOCK (wrklock); \
		958	req->ptr2 = malloc (len); \
		959	if (!req->ptr2) \
		960	{ \
		961	errno = ENOMEM; \
		962	req->result = -1; \
		963	break; \
		964	} \
		965	}
		966
773	X_THREAD_PROC (eio_proc)	967	X_THREAD_PROC (etp_proc)
774	{	968	{
775	eio_req *req;	969	ETP_REQ *req;
776	struct timespec ts;	970	struct timespec ts;
777	worker self = (worker )thr_arg;	971	etp_worker self = (etp_worker )thr_arg;
778		972
779	/* try to distribute timeouts somewhat randomly */	973	/* try to distribute timeouts somewhat randomly */
780	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);	974	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
781		975
782	for (;;)	976	for (;;)
783	{	977	{
784	ts.tv_sec = time (0) + IDLE_TIMEOUT;
785
786	X_LOCK (reqlock);	978	X_LOCK (reqlock);
787		979
788	for (;;)	980	for (;;)
789	{	981	{
790	self->req = req = reqq_shift (&req_queue);	982	self->req = req = reqq_shift (&req_queue);
…		…
792	if (req)	984	if (req)
793	break;	985	break;
794		986
795	++idle;	987	++idle;
796		988
		989	ts.tv_sec = time (0) + IDLE_TIMEOUT;
797	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)	990	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
798	{	991	{
799	if (idle > max_idle)	992	if (idle > max_idle)
800	{	993	{
801	--idle;	994	--idle;
…		…
806	goto quit;	999	goto quit;
807	}	1000	}
808		1001
809	/* we are allowed to idle, so do so without any timeout */	1002	/* we are allowed to idle, so do so without any timeout */
810	X_COND_WAIT (reqwait, reqlock);	1003	X_COND_WAIT (reqwait, reqlock);
811	ts.tv_sec = time (0) + IDLE_TIMEOUT;
812	}	1004	}
813		1005
814	--idle;	1006	--idle;
815	}	1007	}
816		1008
817	--nready;	1009	--nready;
818		1010
819	X_UNLOCK (reqlock);	1011	X_UNLOCK (reqlock);
820		1012
821	errno = 0; /* strictly unnecessary */	1013	if (req->type < 0)
		1014	goto quit;
822		1015
823	if (!EIO_CANCELLED (req))	1016	if (!EIO_CANCELLED (req))
824	switch (req->type)	1017	ETP_EXECUTE (self, req);
825	{
826	case EIO_READ: req->result = req->offs >= 0
827	? pread (req->int1, req->ptr2, req->size, req->offs)
828	: read (req->int1, req->ptr2, req->size); break;
829	case EIO_WRITE: req->result = req->offs >= 0
830	? pwrite (req->int1, req->ptr2, req->size, req->offs)
831	: write (req->int1, req->ptr2, req->size); break;
832
833	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
834	case EIO_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
835
836	case EIO_STAT: req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
837	case EIO_LSTAT: req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
838	case EIO_FSTAT: req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
839
840	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
841	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
842	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
843	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
844	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
845	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
846
847	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
848	case EIO_CLOSE: req->result = close (req->int1); break;
849	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
850	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
851	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
852	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
853	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
854	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
855	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
856	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break;
857	case EIO_READLINK: req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
858
859	case EIO_SYNC: req->result = 0; sync (); break;
860	case EIO_FSYNC: req->result = fsync (req->int1); break;
861	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
862
863	case EIO_READDIR: scandir_ (req, self); break;
864
865	case EIO_BUSY:
866	#ifdef _WIN32
867	Sleep (req->nv1 * 1000.);
868	#else
869	{
870	struct timeval tv;
871
872	tv.tv_sec = req->nv1;
873	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
874
875	req->result = select (0, 0, 0, 0, &tv);
876	}
877	#endif
878	break;
879
880	case EIO_UTIME:
881	case EIO_FUTIME:
882	{
883	struct timeval tv[2];
884	struct timeval *times;
885
886	if (req->nv1 != -1. \|\| req->nv2 != -1.)
887	{
888	tv[0].tv_sec = req->nv1;
889	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
890	tv[1].tv_sec = req->nv2;
891	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
892
893	times = tv;
894	}
895	else
896	times = 0;
897
898
899	req->result = req->type == EIO_FUTIME
900	? futimes (req->int1, times)
901	: utimes (req->ptr1, times);
902	}
903
904	case EIO_GROUP:
905	case EIO_NOP:
906	break;
907
908	case EIO_QUIT:
909	goto quit;
910
911	default:
912	req->result = -1;
913	break;
914	}
915
916	req->errorno = errno;
917		1018
918	X_LOCK (reslock);	1019	X_LOCK (reslock);
919		1020
920	++npending;	1021	++npending;
921		1022
922	if (!reqq_push (&res_queue, req) && want_poll_cb)	1023	if (!reqq_push (&res_queue, req) && want_poll_cb)
923	want_poll_cb ();	1024	want_poll_cb ();
924		1025
925	self->req = 0;	1026	self->req = 0;
926	worker_clear (self);	1027	etp_worker_clear (self);
927		1028
928	X_UNLOCK (reslock);	1029	X_UNLOCK (reslock);
929	}	1030	}
930		1031
931	quit:	1032	quit:
932	X_LOCK (wrklock);	1033	X_LOCK (wrklock);
933	worker_free (self);	1034	etp_worker_free (self);
934	X_UNLOCK (wrklock);	1035	X_UNLOCK (wrklock);
935		1036
936	return 0;	1037	return 0;
937	}	1038	}
938		1039
939	/*****************************************************************************/	1040	/*****************************************************************************/
940		1041
941	static void eio_atfork_prepare (void)	1042	int eio_init (void (want_poll)(void), void (done_poll)(void))
942	{	1043	{
943	X_LOCK (wrklock);	1044	etp_init (want_poll, done_poll);
944	X_LOCK (reqlock);
945	X_LOCK (reslock);
946	#if !HAVE_PREADWRITE
947	X_LOCK (preadwritelock);
948	#endif
949	#if !HAVE_READDIR_R
950	X_LOCK (readdirlock);
951	#endif
952	}	1045	}
953		1046
954	static void eio_atfork_parent (void)	1047	static void eio_api_destroy (eio_req *req)
955	{	1048	{
956	#if !HAVE_READDIR_R	1049	free (req);
957	X_UNLOCK (readdirlock);
958	#endif
959	#if !HAVE_PREADWRITE
960	X_UNLOCK (preadwritelock);
961	#endif
962	X_UNLOCK (reslock);
963	X_UNLOCK (reqlock);
964	X_UNLOCK (wrklock);
965	}	1050	}
966		1051
967	static void eio_atfork_child (void)	1052	#define REQ(rtype) \
968	{	1053	eio_req *req; \
969	eio_req *prv;	1054	\
		1055	req = (eio_req )calloc (1, sizeof req); \
		1056	if (!req) \
		1057	return 0; \
		1058	\
		1059	req->type = rtype; \
		1060	req->pri = pri; \
		1061	req->finish = cb; \
		1062	req->data = data; \
		1063	req->destroy = eio_api_destroy;
970		1064
971	while (prv = reqq_shift (&req_queue))	1065	#define SEND eio_submit (req); return req
972	eio_destroy (prv);
973		1066
974	while (prv = reqq_shift (&res_queue))	1067	#define PATH \
975	eio_destroy (prv);	1068	req->flags \|= EIO_FLAG_PTR1_FREE; \
		1069	req->ptr1 = strdup (path); \
		1070	if (!req->ptr1) \
		1071	{ \
		1072	eio_api_destroy (req); \
		1073	return 0; \
		1074	}
976		1075
977	while (wrk_first.next != &wrk_first)	1076	static void eio_execute (etp_worker self, eio_req req)
		1077	{
		1078	errno = 0;
		1079
		1080	switch (req->type)
978	{	1081	{
979	worker *wrk = wrk_first.next;	1082	case EIO_READ: ALLOC (req->size);
		1083	req->result = req->offs >= 0
		1084	? pread (req->int1, req->ptr2, req->size, req->offs)
		1085	: read (req->int1, req->ptr2, req->size); break;
		1086	case EIO_WRITE: req->result = req->offs >= 0
		1087	? pwrite (req->int1, req->ptr2, req->size, req->offs)
		1088	: write (req->int1, req->ptr2, req->size); break;
980		1089
981	if (wrk->req)	1090	case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
982	eio_destroy (wrk->req);	1091	case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;
983		1092
984	worker_clear (wrk);	1093	case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
985	worker_free (wrk);	1094	req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
986	}	1095	case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1096	req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
		1097	case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
		1098	req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
987		1099
988	started = 0;	1100	case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
989	idle = 0;	1101	case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
990	nreqs = 0;	1102	case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
991	nready = 0;	1103	case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
992	npending = 0;	1104	case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1105	case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
993		1106
994	eio_atfork_parent ();	1107	case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
995	}	1108	case EIO_CLOSE: req->result = close (req->int1); break;
		1109	case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
		1110	case EIO_UNLINK: req->result = unlink (req->ptr1); break;
		1111	case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
		1112	case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
		1113	case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
		1114	case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
		1115	case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
		1116	case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;
996		1117
997	int eio_init (void (want_poll)(void), void (done_poll)(void))	1118	case EIO_READLINK: ALLOC (NAME_MAX);
998	{	1119	req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break;
999	want_poll_cb = want_poll;
1000	done_poll_cb = done_poll;
1001		1120
		1121	case EIO_SYNC: req->result = 0; sync (); break;
		1122	case EIO_FSYNC: req->result = fsync (req->int1); break;
		1123	case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
		1124
		1125	case EIO_READDIR: eio__scandir (req, self); break;
		1126
		1127	case EIO_BUSY:
1002	#ifdef _WIN32	1128	#ifdef _WIN32
1003	X_MUTEX_CHECK (wrklock);	1129	Sleep (req->nv1 * 1000.);
1004	X_MUTEX_CHECK (reslock);	1130	#else
1005	X_MUTEX_CHECK (reqlock);
1006	X_MUTEX_CHECK (reqwait);
1007	X_MUTEX_CHECK (preadwritelock);
1008	X_MUTEX_CHECK (readdirlock);
1009
1010	X_COND_CHECK (reqwait);
1011	#endif
1012
1013	X_THREAD_ATFORK (eio_atfork_prepare, eio_atfork_parent, eio_atfork_child);
1014	}
1015
1016	#if 0
1017
1018	eio_req *eio_fsync (int fd, eio_cb cb);
1019	eio_req *eio_fdatasync (int fd, eio_cb cb);
1020	eio_req *eio_dupclose (int fd, eio_cb cb);
1021	eio_req *eio_readahead (int fd, off_t offset, size_t length, eio_cb cb);
1022	eio_req eio_read (int fd, off_t offs, size_t length, char data, eio_cb cb);
1023	eio_req eio_write (int fd, off_t offs, size_t length, char data, eio_cb cb);
1024	eio_req eio_fstat (int fd, eio_cb cb); / stat buffer=ptr2 allocates dynamically */
1025	eio_req *eio_futime (int fd, double atime, double mtime, eio_cb cb);
1026	eio_req *eio_ftruncate (int fd, off_t offset, eio_cb cb);
1027	eio_req *eio_fchmod (int fd, mode_t mode, eio_cb cb);
1028	eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, eio_cb cb);
1029	eio_req *eio_dup2 (int fd, int fd2, eio_cb cb);
1030	eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, eio_cb cb);
1031	eio_req eio_open (const char path, int flags, mode_t mode, eio_cb cb);
1032	eio_req eio_readlink (const char path, eio_cb cb); /* result=ptr2 allocated dynamically */
1033	eio_req eio_stat (const char path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
1034	eio_req eio_lstat (const char path, eio_cb cb); /* stat buffer=ptr2 allocates dynamically */
1035	eio_req eio_utime (const char path, double atime, double mtime, eio_cb cb);
1036	eio_req eio_truncate (const char path, off_t offset, eio_cb cb);
1037	eio_req eio_chmod (const char path, mode_t mode, eio_cb cb);
1038	eio_req eio_mkdir (const char path, mode_t mode, eio_cb cb);
1039	eio_req eio_chown (const char path, uid_t uid, gid_t gid, eio_cb cb);
1040	eio_req eio_unlink (const char path, eio_cb cb);
1041	eio_req eio_rmdir (const char path, eio_cb cb);
1042	eio_req eio_readdir (const char path, eio_cb cb); /* result=ptr2 allocated dynamically */
1043	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, eio_cb cb);
1044	eio_req eio_busy (double delay, eio_cb cb); / ties a thread for this long, simulating busyness */
1045	eio_req eio_nop (eio_cb cb); / does nothing except go through the whole process */
1046	void
1047	aio_open (SV8 pathname, int flags, int mode, SV callback=&PL_sv_undef)
1048	PROTOTYPE: $$$;$
1049	PPCODE:
1050	{
1051	dREQ;
1052
1053	req->type = EIO_OPEN;
1054	req->sv1 = newSVsv (pathname);
1055	req->ptr1 = SvPVbyte_nolen (req->sv1);
1056	req->int1 = flags;
1057	req->int2 = mode;
1058
1059	EIO_SEND;
1060	}
1061
1062	void
1063	aio_fsync (SV fh, SV callback=&PL_sv_undef)
1064	PROTOTYPE: $;$
1065	ALIAS:
1066	aio_fsync = EIO_FSYNC
1067	aio_fdatasync = EIO_FDATASYNC
1068	PPCODE:
1069	{
1070	dREQ;
1071
1072	req->type = ix;
1073	req->sv1 = newSVsv (fh);
1074	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1075
1076	EIO_SEND (req);
1077	}
1078
1079	void
1080	aio_close (SV fh, SV callback=&PL_sv_undef)
1081	PROTOTYPE: $;$
1082	PPCODE:
1083	{
1084	dREQ;
1085
1086	req->type = EIO_CLOSE;
1087	req->sv1 = newSVsv (fh);
1088	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1089
1090	EIO_SEND (req);
1091	}
1092
1093	void
1094	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback=&PL_sv_undef)
1095	ALIAS:
1096	aio_read = EIO_READ
1097	aio_write = EIO_WRITE
1098	PROTOTYPE: $$$$$;$
1099	PPCODE:
1100	{
1101	STRLEN svlen;
1102	char *svptr = SvPVbyte (data, svlen);
1103	UV len = SvUV (length);
1104
1105	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);
1107
1108	if (dataoffset < 0)
1109	dataoffset += svlen;
1110
1111	if (dataoffset < 0 \|\| dataoffset > svlen)
1112	croak ("dataoffset outside of data scalar");
1113
1114	if (ix == EIO_WRITE)
1115	{
1116	/* write: check length and adjust. */
1117	if (!SvOK (length) \|\| len + dataoffset > svlen)
1118	len = svlen - dataoffset;
1119	}
1120	else
1121	{
1122	/* read: grow scalar as necessary */
1123	svptr = SvGROW (data, len + dataoffset + 1);
1124	}
1125
1126	if (len < 0)
1127	croak ("length must not be negative");
1128
1129	{	1131	{
1130	dREQ;	1132	struct timeval tv;
1131		1133
1132	req->type = ix;	1134	tv.tv_sec = req->nv1;
1133	req->sv1 = newSVsv (fh);	1135	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1134	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1135	: IoOFP (sv_2io (fh)));
1136	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1137	req->size = len;
1138	req->sv2 = SvREFCNT_inc (data);
1139	req->ptr2 = (char *)svptr + dataoffset;
1140	req->stroffset = dataoffset;
1141		1136
1142	if (!SvREADONLY (data))	1137	req->result = select (0, 0, 0, 0, &tv);
		1138	}
		1139	#endif
		1140	break;
		1141
		1142	case EIO_UTIME:
		1143	case EIO_FUTIME:
		1144	{
		1145	struct timeval tv[2];
		1146	struct timeval *times;
		1147
		1148	if (req->nv1 != -1. \|\| req->nv2 != -1.)
1143	{	1149	{
1144	SvREADONLY_on (data);	1150	tv[0].tv_sec = req->nv1;
1145	req->flags \|= FLAG_SV2_RO_OFF;	1151	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1152	tv[1].tv_sec = req->nv2;
		1153	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1154
		1155	times = tv;
1146	}	1156	}
		1157	else
		1158	times = 0;
1147		1159
1148	EIO_SEND;	1160
		1161	req->result = req->type == EIO_FUTIME
		1162	? futimes (req->int1, times)
		1163	: utimes (req->ptr1, times);
1149	}	1164	}
1150	}
1151		1165
1152	void	1166	case EIO_GROUP:
1153	aio_readlink (SV8 path, SV callback=&PL_sv_undef)	1167	case EIO_NOP:
1154	PROTOTYPE: $$;$	1168	req->result = 0;
1155	PPCODE:	1169	break;
1156	{
1157	SV *data;
1158	dREQ;
1159		1170
1160	data = newSV (NAME_MAX);	1171	case EIO_CUSTOM:
1161	SvPOK_on (data);	1172	req->feed (req);
		1173	break;
1162		1174
1163	req->type = EIO_READLINK;	1175	default:
1164	req->sv1 = newSVsv (path);	1176	req->result = -1;
1165	req->ptr1 = SvPVbyte_nolen (req->sv1);	1177	break;
1166	req->sv2 = data;	1178	}
1167	req->ptr2 = SvPVbyte_nolen (data);
1168		1179
1169	EIO_SEND;	1180	req->errorno = errno;
1170	}	1181	}
1171		1182
1172	void	1183	#ifndef EIO_NO_WRAPPERS
1173	aio_sendfile (SV out_fh, SV in_fh, SV in_offset, UV length, SV callback=&PL_sv_undef)
1174	PROTOTYPE: $$$$;$
1175	PPCODE:
1176	{
1177	dREQ;
1178		1184
1179	req->type = EIO_SENDFILE;	1185	eio_req eio_nop (int pri, eio_cb cb, void data)
1180	req->sv1 = newSVsv (out_fh);
1181	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1182	req->sv2 = newSVsv (in_fh);
1183	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1184	req->offs = SvVAL64 (in_offset);
1185	req->size = length;
1186
1187	EIO_SEND;
1188	}
1189
1190	void
1191	aio_readahead (SV fh, SV offset, IV length, SV *callback=&PL_sv_undef)
1192	PROTOTYPE: $$$;$
1193	PPCODE:
1194	{	1186	{
1195	dREQ;	1187	REQ (EIO_NOP); SEND;
1196
1197	req->type = EIO_READAHEAD;
1198	req->sv1 = newSVsv (fh);
1199	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1200	req->offs = SvVAL64 (offset);
1201	req->size = length;
1202
1203	EIO_SEND;
1204	}	1188	}
1205		1189
1206	void	1190	eio_req eio_busy (double delay, int pri, eio_cb cb, void data)
1207	aio_stat (SV8 fh_or_path, SV callback=&PL_sv_undef)
1208	ALIAS:
1209	aio_stat = EIO_STAT
1210	aio_lstat = EIO_LSTAT
1211	PPCODE:
1212	{	1191	{
1213	dREQ;	1192	REQ (EIO_BUSY); req->nv1 = delay; SEND;
		1193	}
1214		1194
1215	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));	1195	eio_req eio_sync (int pri, eio_cb cb, void data)
1216	if (!req->ptr2)	1196	{
1217	{	1197	REQ (EIO_SYNC); SEND;
1218	req_destroy (req);	1198	}
1219	croak ("out of memory during aio_stat statdata allocation");
1220	}
1221		1199
		1200	eio_req eio_fsync (int fd, int pri, eio_cb cb, void data)
		1201	{
		1202	REQ (EIO_FSYNC); req->int1 = fd; SEND;
		1203	}
		1204
		1205	eio_req eio_fdatasync (int fd, int pri, eio_cb cb, void data)
		1206	{
		1207	REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
		1208	}
		1209
		1210	eio_req eio_close (int fd, int pri, eio_cb cb, void data)
		1211	{
		1212	REQ (EIO_CLOSE); req->int1 = fd; SEND;
		1213	}
		1214
		1215	eio_req eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void data)
		1216	{
		1217	REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
		1218	}
		1219
		1220	eio_req eio_read (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
		1221	{
		1222	REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		1223	}
		1224
		1225	eio_req eio_write (int fd, void buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
		1226	{
		1227	REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
		1228	}
		1229
		1230	eio_req eio_fstat (int fd, int pri, eio_cb cb, void data)
		1231	{
		1232	REQ (EIO_FSTAT); req->int1 = fd; SEND;
		1233	}
		1234
		1235	eio_req eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void data)
		1236	{
		1237	REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
		1238	}
		1239
		1240	eio_req eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void data)
		1241	{
		1242	REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;
		1243	}
		1244
		1245	eio_req eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void data)
		1246	{
		1247	REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
		1248	}
		1249
		1250	eio_req eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void data)
		1251	{
		1252	REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
		1253	}
		1254
		1255	eio_req eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void data)
		1256	{
		1257	REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND;
		1258	}
		1259
		1260	eio_req eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void data)
		1261	{
		1262	REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;
		1263	}
		1264
		1265	eio_req eio_open (const char path, int flags, mode_t mode, int pri, eio_cb cb, void *data)
		1266	{
		1267	REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;
		1268	}
		1269
		1270	eio_req eio_utime (const char path, double atime, double mtime, int pri, eio_cb cb, void *data)
		1271	{
		1272	REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;
		1273	}
		1274
		1275	eio_req eio_truncate (const char path, off_t offset, int pri, eio_cb cb, void *data)
		1276	{
		1277	REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
		1278	}
		1279
		1280	eio_req eio_chown (const char path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)
		1281	{
		1282	REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
		1283	}
		1284
		1285	eio_req eio_chmod (const char path, mode_t mode, int pri, eio_cb cb, void *data)
		1286	{
		1287	REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND;
		1288	}
		1289
		1290	eio_req eio_mkdir (const char path, mode_t mode, int pri, eio_cb cb, void *data)
		1291	{
		1292	REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND;
		1293	}
		1294
		1295	static eio_req *
		1296	eio__1path (int type, const char path, int pri, eio_cb cb, void data)
		1297	{
		1298	REQ (type); PATH; SEND;
		1299	}
		1300
		1301	eio_req eio_readlink (const char path, int pri, eio_cb cb, void *data)
		1302	{
		1303	return eio__1path (EIO_READLINK, path, pri, cb, data);
		1304	}
		1305
		1306	eio_req eio_stat (const char path, int pri, eio_cb cb, void *data)
		1307	{
		1308	return eio__1path (EIO_STAT, path, pri, cb, data);
		1309	}
		1310
		1311	eio_req eio_lstat (const char path, int pri, eio_cb cb, void *data)
		1312	{
		1313	return eio__1path (EIO_LSTAT, path, pri, cb, data);
		1314	}
		1315
		1316	eio_req eio_unlink (const char path, int pri, eio_cb cb, void *data)
		1317	{
		1318	return eio__1path (EIO_UNLINK, path, pri, cb, data);
		1319	}
		1320
		1321	eio_req eio_rmdir (const char path, int pri, eio_cb cb, void *data)
		1322	{
		1323	return eio__1path (EIO_RMDIR, path, pri, cb, data);
		1324	}
		1325
		1326	eio_req eio_readdir (const char path, int pri, eio_cb cb, void *data)
		1327	{
		1328	return eio__1path (EIO_READDIR, path, pri, cb, data);
		1329	}
		1330
		1331	eio_req eio_mknod (const char path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
		1332	{
		1333	REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;
		1334	}
		1335
		1336	static eio_req *
		1337	eio__2path (int type, const char path, const char new_path, int pri, eio_cb cb, void *data)
		1338	{
		1339	REQ (type); PATH;
		1340
1222	req->flags \|= FLAG_PTR2_FREE;	1341	req->flags \|= EIO_FLAG_PTR2_FREE;
1223	req->sv1 = newSVsv (fh_or_path);	1342	req->ptr2 = strdup (new_path);
		1343	if (!req->ptr2)
		1344	{
		1345	eio_api_destroy (req);
		1346	return 0;
		1347	}
1224		1348
1225	if (SvPOK (fh_or_path))	1349	SEND;
1226	{
1227	req->type = ix;
1228	req->ptr1 = SvPVbyte_nolen (req->sv1);
1229	}
1230	else
1231	{
1232	req->type = EIO_FSTAT;
1233	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1234	}
1235
1236	EIO_SEND;
1237	}	1350	}
1238		1351
1239	void	1352	eio_req eio_link (const char path, const char new_path, int pri, eio_cb cb, void data)
1240	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback=&PL_sv_undef)
1241	PPCODE:
1242	{	1353	{
1243	dREQ;	1354	return eio__2path (EIO_LINK, path, new_path, pri, cb, data);
1244
1245	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1246	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1247	req->sv1 = newSVsv (fh_or_path);
1248
1249	if (SvPOK (fh_or_path))
1250	{
1251	req->type = EIO_UTIME;
1252	req->ptr1 = SvPVbyte_nolen (req->sv1);
1253	}
1254	else
1255	{
1256	req->type = EIO_FUTIME;
1257	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1258	}
1259
1260	EIO_SEND;
1261	}	1355	}
1262		1356
1263	void	1357	eio_req eio_symlink (const char path, const char new_path, int pri, eio_cb cb, void data)
1264	aio_truncate (SV8 fh_or_path, SV offset, SV *callback=&PL_sv_undef)
1265	PPCODE:
1266	{	1358	{
1267	dREQ;	1359	return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data);
1268
1269	req->sv1 = newSVsv (fh_or_path);
1270	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1271
1272	if (SvPOK (fh_or_path))
1273	{
1274	req->type = EIO_TRUNCATE;
1275	req->ptr1 = SvPVbyte_nolen (req->sv1);
1276	}
1277	else
1278	{
1279	req->type = EIO_FTRUNCATE;
1280	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1281	}
1282
1283	EIO_SEND;
1284	}	1360	}
1285		1361
1286	void	1362	eio_req eio_rename (const char path, const char new_path, int pri, eio_cb cb, void data)
1287	aio_chmod (SV8 fh_or_path, int mode, SV callback=&PL_sv_undef)
1288	ALIAS:
1289	aio_chmod = EIO_CHMOD
1290	aio_fchmod = EIO_FCHMOD
1291	aio_mkdir = EIO_MKDIR
1292	PPCODE:
1293	{	1363	{
1294	dREQ;	1364	return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
1295
1296	req->type = type;
1297	req->int2 = mode;
1298	req->sv1 = newSVsv (fh_or_path);
1299
1300	if (ix == EIO_FCHMOD)
1301	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1302	else
1303	req->ptr1 = SvPVbyte_nolen (req->sv1);
1304
1305	EIO_SEND;
1306	}	1365	}
1307		1366
1308	void	1367	eio_req eio_custom (eio_cb execute, int pri, eio_cb cb, void data)
1309	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback=&PL_sv_undef)
1310	PPCODE:
1311	{	1368	{
1312	dREQ;	1369	REQ (EIO_CUSTOM); req->feed = execute; SEND;
1313
1314	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1315	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1316	req->sv1 = newSVsv (fh_or_path);
1317
1318	if (SvPOK (fh_or_path))
1319	{
1320	req->type = EIO_CHOWN;
1321	req->ptr1 = SvPVbyte_nolen (req->sv1);
1322	}
1323	else
1324	{
1325	req->type = EIO_FCHOWN;
1326	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1327	}
1328
1329	EIO_SEND;
1330	}	1370	}
1331		1371
1332	void
1333	aio_unlink (SV8 pathname, SV callback=&PL_sv_undef)
1334	ALIAS:
1335	aio_unlink = EIO_UNLINK
1336	aio_rmdir = EIO_RMDIR
1337	aio_readdir = EIO_READDIR
1338	PPCODE:
1339	{
1340	dREQ;
1341
1342	req->type = ix;
1343	req->sv1 = newSVsv (pathname);
1344	req->ptr1 = SvPVbyte_nolen (req->sv1);
1345
1346	EIO_SEND;
1347	}
1348
1349	void
1350	aio_link (SV8 oldpath, SV8 newpath, SV *callback=&PL_sv_undef)
1351	ALIAS:
1352	aio_link = EIO_LINK
1353	aio_symlink = EIO_SYMLINK
1354	aio_rename = EIO_RENAME
1355	PPCODE:
1356	{
1357	dREQ;
1358
1359	req->type = ix;
1360	req->sv1 = newSVsv (oldpath);
1361	req->ptr1 = SvPVbyte_nolen (req->sv1);
1362	req->sv2 = newSVsv (newpath);
1363	req->ptr2 = SvPVbyte_nolen (req->sv2);
1364
1365	EIO_SEND;
1366	}
1367
1368	void
1369	aio_mknod (SV8 pathname, int mode, UV dev, SV callback=&PL_sv_undef)
1370	PPCODE:
1371	{
1372	dREQ;
1373
1374	req->type = EIO_MKNOD;
1375	req->sv1 = newSVsv (pathname);
1376	req->ptr1 = SvPVbyte_nolen (req->sv1);
1377	req->int2 = (mode_t)mode;
1378	req->offs = dev;
1379
1380	EIO_SEND;
1381	}
1382
1383	void
1384	aio_busy (double delay, SV *callback=&PL_sv_undef)
1385	PPCODE:
1386	{
1387	dREQ;
1388
1389	req->type = EIO_BUSY;
1390	req->nv1 = delay < 0. ? 0. : delay;
1391
1392	EIO_SEND;
1393	}
1394
1395	void
1396	aio_group (SV *callback=&PL_sv_undef)
1397	PROTOTYPE: ;$
1398	PPCODE:
1399	{
1400	dREQ;
1401
1402	req->type = EIO_GROUP;
1403
1404	req_send (req);
1405	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1406	}
1407
1408	void
1409	aio_nop (SV *callback=&PL_sv_undef)
1410	ALIAS:
1411	aio_nop = EIO_NOP
1412	aio_sync = EIO_SYNC
1413	PPCODE:
1414	{
1415	dREQ;
1416
1417	#endif	1372	#endif
		1373
		1374	eio_req eio_grp (eio_cb cb, void data)
		1375	{
		1376	const int pri = EIO_PRI_MAX;
		1377
		1378	REQ (EIO_GROUP); SEND;
		1379	}
		1380
		1381	#undef REQ
		1382	#undef PATH
		1383	#undef SEND
		1384
		1385	/*****************************************************************************/
		1386	/* grp functions */
1418		1387
1419	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit)	1388	void eio_grp_feed (eio_req grp, void (feed)(eio_req *req), int limit)
1420	{	1389	{
1421	grp->int2 = limit;	1390	grp->int2 = limit;
1422	grp->feed = feed;	1391	grp->feed = feed;
…		…
1445	grp->grp_first->grp_prev = req;	1414	grp->grp_first->grp_prev = req;
1446		1415
1447	grp->grp_first = req;	1416	grp->grp_first = req;
1448	}	1417	}
1449		1418
		1419	/*****************************************************************************/
		1420	/* misc garbage */
1450		1421
		1422	ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
		1423	{
		1424	etp_worker wrk;
		1425
		1426	wrk.dbuf = 0;
		1427
		1428	eio__sendfile (ofd, ifd, offset, count, &wrk);
		1429
		1430	if (wrk.dbuf)
		1431	free (wrk.dbuf);
		1432	}
		1433

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Comparing libeio/eio.c (file contents): Revision 1.2 by root, Sat May 10 23:33:40 2008 UTC vs. Revision 1.18 by root, Mon Jun 16 12:19:55 2008 UTC

Diff Legend

Comparing libeio/eio.c (file contents):
Revision 1.2 by root, Sat May 10 23:33:40 2008 UTC vs.
Revision 1.18 by root, Mon Jun 16 12:19:55 2008 UTC