ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.251 by root, Sat Jan 6 01:04:42 2018 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	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
18	#ifdef _WIN32	47	#ifdef _WIN32
19		48
20	# define SIGIO 0	49	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	50
22	#undef malloc	51	#undef malloc
23	#undef free	52	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	53	#undef open
27	# undef read	54	#undef read
28	# undef write	55	#undef write
29	# undef send	56	#undef send
30	# undef recv	57	#undef recv
31	# undef stat	58	#undef stat
		59	#undef lstat
32	# undef fstat	60	#undef fstat
33	# define lstat stat
34	# undef truncate	61	#undef truncate
35	# undef ftruncate	62	#undef ftruncate
36	# undef open	63	#undef open
		64	#undef link
37	# undef close	65	#undef close
38	# undef unlink	66	#undef unlink
		67	#undef mkdir
39	# undef rmdir	68	#undef rmdir
40	# undef rename	69	#undef rename
41	# undef lseek	70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
42		80
43	# define chown(a,b,c) (errno = ENOSYS, -1)	81	#define EIO_STRUCT_STAT struct _stati64
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	82	#define EIO_STRUCT_STATI64
45	# define fchmod(a,b) (errno = ENOSYS, -1)
46	# define symlink(a,b) (errno = ENOSYS, -1)
47	# define readlink(a,b,c) (errno = ENOSYS, -1)
48	# define mknod(a,b,c) (errno = ENOSYS, -1)
49	# define truncate(a,b) (errno = ENOSYS, -1)
50	# define ftruncate(fd,o) chsize ((fd), (o))
51	# define fsync(fd) _commit (fd)
52	# define opendir(fd) (errno = ENOSYS, 0)
53	# define readdir(fd) (errno = ENOSYS, -1)
54	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)
56		83
57	#else	84	#else
58		85
59	# include "autoconf/config.h"
60	# include <sys/time.h>	86	#include <sys/time.h>
61	# include <sys/select.h>	87	#include <sys/select.h>
62	# include <unistd.h>	88	#include <unistd.h>
63	# include <utime.h>	89	#include <utime.h>
64	# include <signal.h>	90	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		91
67	#endif	92	#define EIO_STRUCT_STAT Stat_t
68		93
69	#if HAVE_SENDFILE	94	#endif
70	# if __linux	95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
71	# include <sys/sendfile.h>	112	#include <sys/time.h>
72	# elif __freebsd
73	# include <sys/socket.h>	113	#include <sys/resource.h>
74	# include <sys/uio.h>	114	#endif
75	# elif __hpux	115
76	# include <sys/socket.h>	116	typedef SV SV8; /* byte-sv, used for argument-checking */
77	# elif __solaris /* not yet */	117	typedef int aio_rfd; /* read file desriptor */
78	# include <sys/sendfile.h>	118	typedef int aio_wfd; /* write file descriptor */
		119
		120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		121
		122	#define EIO_REQ_MEMBERS \
		123	SV *callback; \
		124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
		126	STRLEN stroffset; \
		127	SV *self;
		128
		129	#define EIO_NO_WRAPPERS 1
		130
		131	#include "libeio/eio.h"
		132
		133	static int req_invoke (eio_req *req);
		134	#define EIO_FINISH(req) req_invoke (req)
		135	static void req_destroy (eio_req *grp);
		136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
79	# else	151	# else
80	# error sendfile support requested but not available	152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	153	# endif
82	#endif	154	#endif
83		155
84	/* number of seconds after which idle threads exit */	156	/* defines all sorts of constants to 0 unless they are already defined */
85	#define IDLE_TIMEOUT 10	157	/* also provides const_iv_ and const_niv_ macros for them */
		158	#include "def0.h"
86		159
87	/* used for struct dirent, AIX doesn't provide it */	160	#ifndef makedev
88	#ifndef NAME_MAX	161	# define makedev(maj,min) (((maj) << 8) | (min))
89	# define NAME_MAX 4096
90	#endif	162	#endif
91		163	#ifndef major
92	/* buffer size for various temporary buffers */	164	# define major(dev) ((dev) >> 8)
93	#define AIO_BUFSIZE 65536
94
95	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8
97	# define SvVAL64 SvIV
98	#else
99	# define SvVAL64 SvNV
100	#endif	165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
101		169
102	#define dBUF \	170	#if PAGESIZE <= 0
103	char *aio_buf; \	171	# define PAGESIZE sysconf (_SC_PAGESIZE)
104	X_LOCK (wrklock); \	172	#endif
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	173
106	X_UNLOCK (wrklock); \	174	/*****************************************************************************/
107	if (!aio_buf) \	175
		176	#if !_POSIX_MAPPED_FILES
		177	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		178	# define munmap(addr,length) EIO_ENOSYS ()
		179	#endif
		180
		181	#if !_POSIX_MEMORY_PROTECTION
		182	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		183	#endif
		184
		185	#define FOREIGN_MAGIC PERL_MAGIC_ext
		186
		187	static int ecb_cold
		188	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		189	{
		190	int old_errno = errno;
		191	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		192	errno = old_errno;
		193
		194	mg->mg_obj = 0; /* just in case */
		195
		196	SvREADONLY_off (sv);
		197
		198	if (SvPVX (sv) != mg->mg_ptr)
		199	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		200
		201	SvCUR_set (sv, 0);
		202	SvPVX (sv) = 0;
		203	SvOK_off (sv);
		204
108	return -1;	205	return 0;
		206	}
109		207
110	typedef SV SV8; /* byte-sv, used for argument-checking */	208	static MGVTBL mmap_vtbl = {
111		209	0, 0, 0, 0, mmap_free
112	enum {
113	REQ_QUIT,
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};	210	};
129		211
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	212	static int ecb_cold
131	#define AIO_GRP_KLASS "IO::AIO::GRP"	213	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
132
133	typedef struct aio_cb
134	{	214	{
135	struct aio_cb *volatile next;	215	free (mg->mg_ptr);
		216	mg->mg_obj = 0; /* just in case */
136		217
137	SV *callback;	218	SvREADONLY_off (sv);
138	SV *sv1, *sv2;
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144		219
145	STRLEN stroffset;	220	if (SvPVX (sv) != mg->mg_ptr)
146	int type;	221	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150		222
151	unsigned char flags;	223	SvCUR_set (sv, 0);
152	unsigned char pri;	224	SvPVX (sv) = 0;
		225	SvOK_off (sv);
153		226
154	SV *self; /* the perl counterpart of this request, if any */	227	return 0;
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	228	}
156	} aio_cb;
157		229
158	enum {	230	static MGVTBL sysfree_vtbl = {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */	231	0, 0, 0, 0, sysfree_free
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};	232	};
163		233
164	typedef aio_cb *aio_req;	234	/*****************************************************************************/
165	typedef aio_cb *aio_req_ornot;
166		235
167	enum {	236	/* helper: set scalar to foreign ptr with custom free */
168	PRI_MIN = -4,	237	static void
169	PRI_MAX = 4,	238	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
170
171	DEFAULT_PRI = 0,
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{	239	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	240	sv_force_normal (sv);
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187		241
188	static thread_t main_tid;	242	/* we store the length in mg_obj, as namlen is I32 :/ */
189	static int main_sig;	243	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
190	static int block_sig_level;	244	->mg_obj = (SV *)length;
191		245
192	void block_sig ()	246	SvUPGRADE (sv, SVt_PV); /* nop... */
193	{
194	sigset_t ss;
195		247
196	if (block_sig_level++)	248	if (SvLEN (sv))
		249	Safefree (SvPVX (sv));
		250
		251	SvPVX (sv) = (char *)addr;
		252	SvCUR_set (sv, length);
		253	SvLEN_set (sv, 0);
		254	SvPOK_only (sv);
		255	}
		256
		257	static void
		258	sv_clear_foreign (SV *sv)
		259	{
		260	/* todo: iterate over magic and only free ours, but of course */
		261	/* the perl5porters will call that (correct) behaviour buggy */
		262	sv_unmagic (sv, FOREIGN_MAGIC);
		263	}
		264
		265	/*****************************************************************************/
		266
		267	static void
		268	fiemap (eio_req *req)
		269	{
		270	req->result = -1;
		271
		272	#if HAVE_FIEMAP
		273	/* assume some c99 */
		274	struct fiemap *fiemap = 0;
		275	size_t end_offset;
		276	int count = req->int3;
		277
		278	req->flags |= EIO_FLAG_PTR1_FREE;
		279
		280	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		281	/* increase in 3.5kb steps */
		282	if (count < 0)
		283	count = 8;
		284
		285	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		286	errno = ENOMEM;
		287	if (!fiemap)
197	return;	288	return;
198		289
199	if (!main_sig)	290	req->ptr1 = fiemap;
		291
		292	fiemap->fm_start = req->offs;
		293	fiemap->fm_length = req->size;
		294	fiemap->fm_flags = req->int2;
		295	fiemap->fm_extent_count = count;
		296
		297	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
200	return;	298	return;
201		299
202	sigemptyset (&ss);	300	if (req->int3 >= 0 /* not autosizing */
203	sigaddset (&ss, main_sig);	301	|| !fiemap->fm_mapped_extents /* no more extents */
204	pthread_sigmask (SIG_BLOCK, &ss, 0);	302	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
205	}	303	goto done;
206		304
207	void unblock_sig ()	305	/* else we have to loop -
208	{	306	* it would be tempting (actually I tried that first) to just query the
209	sigset_t ss;	307	* number of extents needed, but linux often feels like not returning all
		308	* extents, without telling us it left any out. this complicates
		309	* this quite a bit.
		310	*/
210		311
211	if (--block_sig_level)	312	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
212	return;
213		313
214	if (!main_sig)	314	for (;;)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{	315	{
247	closedir (wrk->dirp);	316	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
248	wrk->dirp = 0;	317	char scratch[3072];
249	}	318	struct fiemap *incmap = (struct fiemap *)scratch;
250		319
251	if (wrk->dbuf)	320	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
252	{	321	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
253	free (wrk->dbuf);	322	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
254	wrk->dbuf = 0;	323	incmap->fm_flags = fiemap->fm_flags;
255	}	324	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
256	}
257		325
258	static void worker_free (worker *wrk)	326	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;	327	return;
353		328
354	--q->size;	329	if (!incmap->fm_mapped_extents)
		330	goto done;
355		331
356	for (pri = NUM_PRI; pri--; )	332	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
357	{	333	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
358	aio_req req = q->qs[pri];	334	errno = ENOMEM;
359
360	if (req)	335	if (!fiemap)
		336	return;
		337
		338	req->ptr1 = fiemap;
		339
		340	for (count = 0; count < incmap->fm_mapped_extents; ++count)
361	{	341	{
362	if (!(q->qs[pri] = req->next))	342	struct fiemap_extent *e = incmap->fm_extents + count;
363	q->qe[pri] = 0;
364		343
365	return req;	344	if (e->fe_logical + e->fe_length >= end_offset)
		345	goto done;
		346
		347	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		348
		349	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		350	goto done;
		351
366	}	352	}
367	}	353	}
368		354
369	abort ();	355	done:
370	}	356	req->result = 0;
371		357
372	static int poll_cb ();	358	#else
373	static int req_invoke (aio_req req);	359	errno = ENOSYS;
		360	#endif
		361	}
		362
		363	/*****************************************************************************/
		364
		365	enum {
		366	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		367	};
		368
		369	typedef eio_req *aio_req;
		370	typedef eio_req *aio_req_ornot;
		371	typedef eio_wd aio_wd;
		372
		373	static SV *on_next_submit;
		374	static int next_pri = EIO_PRI_DEFAULT;
		375	static int max_outstanding;
		376
		377	static s_epipe respipe;
		378
374	static void req_destroy (aio_req req);	379	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	380	static void req_cancel (aio_req req);
376		381
		382	static void
		383	want_poll (void)
		384	{
		385	/* write a dummy byte to the pipe so fh becomes ready */
		386	s_epipe_signal (&respipe);
		387	}
		388
		389	static void
		390	done_poll (void)
		391	{
		392	/* read any signals sent by the worker threads */
		393	s_epipe_drain (&respipe);
		394	}
		395
377	/* must be called at most once */	396	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	397	static SV *
		398	req_sv (aio_req req, HV *stash)
379	{	399	{
380	if (!req->self)	400	if (!req->self)
381	{	401	{
382	req->self = (SV *)newHV ();	402	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	403	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	404	}
385		405
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	406	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	407	}
388		408
389	static aio_req SvAIO_REQ (SV *sv)	409	static SV *
		410	newSVaio_wd (aio_wd wd)
		411	{
		412	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		413	}
		414
		415	static aio_req
		416	SvAIO_REQ (SV *sv)
390	{	417	{
391	MAGIC *mg;	418	MAGIC *mg;
392		419
393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	420	if (!SvROK (sv)
		421	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		422	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		423	&& SvSTASH (SvRV (sv)) != aio_req_stash
		424	&& !sv_derived_from (sv, "IO::AIO::REQ")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	425	croak ("object of class IO::AIO::REQ expected");
395		426
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	427	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		428
398	return mg ? (aio_req)mg->mg_ptr : 0;	429	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	430	}
400		431
		432	static aio_wd
		433	SvAIO_WD (SV *sv)
		434	{
		435	if (!SvROK (sv)
		436	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		437	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		438	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		439
		440	return (aio_wd)(long)SvIVX (SvRV (sv));
		441	}
		442
		443	static SV *
		444	newmortalFH (int fd, int flags)
		445	{
		446	if (fd < 0)
		447	return &PL_sv_undef;
		448
		449	GV *gv = (GV *)sv_newmortal ();
		450	char sym[64];
		451	int symlen;
		452
		453	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		454	gv_init (gv, aio_stash, sym, symlen, 0);
		455
		456	symlen = snprintf (
		457	sym,
		458	sizeof (sym),
		459	"%s&=%d",
		460	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		461	fd
		462	);
		463
		464	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		465	? (SV *)gv : &PL_sv_undef;
		466	}
		467
		468	static void
401	static void aio_grp_feed (aio_req grp)	469	aio_grp_feed (aio_req grp)
402	{	470	{
403	block_sig ();	471	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	472	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	473	dSP;
412		474
413	ENTER;	475	ENTER;
414	SAVETMPS;	476	SAVETMPS;
415	PUSHMARK (SP);	477	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	478	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	479	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	480	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	481	SPAGAIN;
420	FREETMPS;	482	FREETMPS;
421	LEAVE;	483	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	484	}
432
433	unblock_sig ();
434	}	485	}
435		486
436	static void aio_grp_dec (aio_req grp)	487	static void
		488	req_submit (eio_req *req)
437	{	489	{
438	--grp->size;	490	eio_submit (req);
439		491
440	/* call feeder, if applicable */	492	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	493	{
446	block_sig ();	494	dSP;
		495	SV *cb = sv_2mortal (on_next_submit);
447		496
448	if (!req_invoke (grp))	497	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		498
455	req_destroy (grp);	499	PUSHMARK (SP);
456	unblock_sig ();	500	PUTBACK;
		501	call_sv (cb, G_DISCARD | G_EVAL);
457	}	502	}
458	}	503	}
459		504
		505	static int
460	static int req_invoke (aio_req req)	506	req_invoke (eio_req *req)
461	{	507	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	508	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	509	SvREADONLY_off (req->sv2);
466		510
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	511	if (!EIO_CANCELLED (req) && req->callback)
468	{	512	{
		513	dSP;
		514	static SV *sv_result_cache; /* caches the result integer SV */
		515	SV *sv_result;
		516
469	ENTER;	517	ENTER;
470	SAVETMPS;	518	SAVETMPS;
471	PUSHMARK (SP);	519	PUSHMARK (SP);
472	EXTEND (SP, 1);	520	EXTEND (SP, 1);
473		521
		522	/* do not recreate the result IV from scratch each time */
		523	if (expect_true (sv_result_cache))
		524	{
		525	sv_result = sv_result_cache; sv_result_cache = 0;
		526	SvIV_set (sv_result, req->result);
		527	SvIOK_only (sv_result);
		528	}
		529	else
		530	{
		531	sv_result = newSViv (req->result);
		532	SvREADONLY_on (sv_result);
		533	}
		534
474	switch (req->type)	535	switch (req->type)
475	{	536	{
		537	case EIO_WD_OPEN:
		538	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		539	break;
		540
476	case REQ_READDIR:	541	case EIO_READDIR:
477	{	542	{
478	SV *rv = &PL_sv_undef;	543	SV *rv = &PL_sv_undef;
479		544
480	if (req->result >= 0)	545	if (req->result >= 0)
481	{	546	{
482	int i;	547	int i;
483	char *buf = req->ptr2;	548	char *names = (char *)req->ptr2;
		549	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	550	AV *av = newAV ();
485		551
486	av_extend (av, req->result - 1);	552	av_extend (av, req->result - 1);
487		553
488	for (i = 0; i < req->result; ++i)	554	for (i = 0; i < req->result; ++i)
489	{	555	{
490	SV *sv = newSVpv (buf, 0);	556	if (req->int1 & EIO_READDIR_DENTS)
		557	{
		558	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		559
		560	if (req->int1 & EIO_READDIR_CUSTOM2)
		561	{
		562	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		563	AV *avent = newAV ();
		564
		565	av_extend (avent, 2);
		566
		567	if (!sv_type [ent->type])
		568	{
		569	sv_type [ent->type] = newSViv (ent->type);
		570	SvREADONLY_on (sv_type [ent->type]);
		571	}
		572
		573	av_store (avent, 0, namesv);
		574	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		575	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		576
		577	av_store (av, i, newRV_noinc ((SV *)avent));
		578	}
		579	else
492	av_store (av, i, sv);	580	av_store (av, i, namesv);
		581
		582	++ent;
		583	}
		584	else
		585	{
		586	SV *name = newSVpv (names, 0);
		587	av_store (av, i, name);
493	buf += SvCUR (sv) + 1;	588	names += SvCUR (name) + 1;
		589	}
494	}	590	}
495		591
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	592	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	593	}
498		594
499	PUSHs (rv);	595	PUSHs (rv);
		596
		597	if (req->int1 & EIO_READDIR_CUSTOM1)
		598	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500	}	599	}
501	break;	600	break;
502		601
503	case REQ_OPEN:	602	case EIO_OPEN:
		603	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		604	break;
		605
		606	case EIO_STATVFS:
		607	case EIO_FSTATVFS:
504	{	608	{
505	/* convert fd to fh */	609	SV *rv = &PL_sv_undef;
506	SV *fh;	610
		611	#ifndef _WIN32
		612	if (req->result >= 0)
		613	{
		614	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		615	HV *hv = newHV ();
		616	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		617	* chooses to make it a struct.
		618	*/
		619	unsigned long fsid = 0;
		620	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
507		621
508	PUSHs (sv_2mortal (newSViv (req->result)));	622	rv = sv_2mortal (newRV_noinc ((SV *)hv));
509	PUTBACK;
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
511	SPAGAIN;
512		623
513	fh = POPs;	624	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
514	PUSHMARK (SP);	625	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		626	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		627	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		628	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		629	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		630	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		631	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		632	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		633	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		634	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		635	}
		636	#endif
		637
515	XPUSHs (fh);	638	PUSHs (rv);
516	}	639	}
		640
517	break;	641	break;
518		642
519	case REQ_GROUP:	643	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	644	req->int1 = 2; /* mark group as finished */
521		645
522	if (req->sv1)	646	if (req->sv1)
523	{	647	{
524	int i;	648	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	652	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	653	PUSHs (*av_fetch (av, i, 0));
530	}	654	}
531	break;	655	break;
532		656
533	case REQ_NOP:	657	case EIO_NOP:
534	case REQ_BUSY:	658	case EIO_BUSY:
535	break;	659	break;
536		660
537	case REQ_READLINK:	661	case EIO_READLINK:
		662	case EIO_REALPATH:
538	if (req->result > 0)	663	if (req->result > 0)
		664	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		665	break;
		666
		667	case EIO_STAT:
		668	case EIO_LSTAT:
		669	case EIO_FSTAT:
		670	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		671
		672	if (!(PL_laststatval = req->result))
		673	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		674	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		675
		676	PUSHs (sv_result);
		677	break;
		678
		679	case EIO_SEEK:
		680	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		681	break;
		682
		683	case EIO_READ:
		684	{
		685	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		686	*SvEND (req->sv2) = 0;
		687	SvPOK_only (req->sv2);
		688	SvSETMAGIC (req->sv2);
		689	PUSHs (sv_result);
		690	}
		691	break;
		692
		693	case EIO_SLURP:
		694	{
		695	if (req->result >= 0)
		696	{
		697	/* if length was originally not known, we steal the malloc'ed memory */
		698	if (req->flags & EIO_FLAG_PTR2_FREE)
		699	{
		700	req->flags &= ~EIO_FLAG_PTR2_FREE;
		701	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		702	}
		703	else
		704	SvCUR_set (req->sv2, req->result);
		705	}
		706
		707	PUSHs (sv_result);
		708	}
		709	break;
		710
		711	case EIO_CUSTOM:
		712	if (req->feed == fiemap)
539	{	713	{
540	SvCUR_set (req->sv2, req->result);	714	#if HAVE_FIEMAP
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);	715	if (!req->result)
		716	{
		717	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		718
		719	if (fiemap->fm_extent_count)
		720	{
		721	AV *av = newAV ();
		722	int i;
		723
		724	while (fiemap->fm_mapped_extents)
		725	{
		726	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		727	AV *ext_av = newAV ();
		728
		729	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		730	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		731	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		732	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		733
		734	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		735	}
		736
		737	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		738	}
		739	else
		740	{
		741	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		742	PUSHs (sv_result);
		743	}
		744	}
		745	#endif
543	}	746	}
		747	else
		748	PUSHs (sv_result);
544	break;	749	break;
545		750
546	case REQ_STAT:	751	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
547	case REQ_LSTAT:	752	if (req->result > 0)
548	case REQ_FSTAT:	753	SvIV_set (sv_result, 0);
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	754	/* FALLTHROUGH */
550	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));
553	break;
554
555	case REQ_READ:
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));
559	break;
560		755
561	default:	756	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	757	PUSHs (sv_result);
563	break;	758	break;
564	}	759	}
565		760
566	errno = req->errorno;	761	errno = req->errorno;
567		762
568	PUTBACK;	763	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	764	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	765	SPAGAIN;
		766
		767	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		768	SvREFCNT_dec (sv_result);
		769	else
		770	sv_result_cache = sv_result;
571		771
572	FREETMPS;	772	FREETMPS;
573	LEAVE;	773	LEAVE;
		774
		775	PUTBACK;
574	}	776	}
575		777
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	778	return !!SvTRUE (ERRSV);
591	}	779	}
592		780
		781	static void
593	static void req_destroy (aio_req req)	782	req_destroy (aio_req req)
594	{	783	{
595	if (req->self)	784	if (req->self)
596	{	785	{
597	sv_unmagic (req->self, PERL_MAGIC_ext);	786	sv_unmagic (req->self, PERL_MAGIC_ext);
598	SvREFCNT_dec (req->self);	787	SvREFCNT_dec (req->self);
599	}	788	}
600		789
601	SvREFCNT_dec (req->sv1);	790	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	791	SvREFCNT_dec (req->sv2);
		792	SvREFCNT_dec (req->sv3);
		793	SvREFCNT_dec (req->sv4);
603	SvREFCNT_dec (req->callback);	794	SvREFCNT_dec (req->callback);
604		795
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	796	free (req);
609	}	797	}
610		798
		799	static void
611	static void req_cancel_subs (aio_req grp)	800	req_cancel_subs (aio_req grp)
612	{	801	{
613	aio_req sub;
614
615	if (grp->type != REQ_GROUP)	802	if (grp->type != EIO_GROUP)
616	return;	803	return;
617		804
618	SvREFCNT_dec (grp->sv2);	805	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	806	grp->sv2 = 0;
620		807
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	808	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	809	}
624		810
625	static void req_cancel (aio_req req)	811	static void ecb_cold
		812	create_respipe (void)
626	{	813	{
627	req->flags |= FLAG_CANCELLED;	814	if (s_epipe_renew (&respipe))
628		815	croak ("IO::AIO: unable to initialize result pipe");
629	req_cancel_subs (req);
630	}	816	}
631
632	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else
635	# define TO_SOCKET(x) (x)
636	#endif
637		817
638	static void	818	static void
639	create_respipe ()	819	poll_wait (void)
640	{	820	{
641	int old_readfd = respipe [0];
642
643	if (respipe [1] >= 0)
644	respipe_close (TO_SOCKET (respipe [1]));
645
646	#ifdef _WIN32
647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648	#else
649	if (pipe (respipe))
650	#endif
651	croak ("unable to initialize result pipe");
652
653	if (old_readfd >= 0)
654	{
655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656	croak ("unable to initialize result pipe(2)");
657
658	respipe_close (respipe [0]);
659	respipe [0] = old_readfd;
660	}
661
662	#ifdef _WIN32
663	int arg = 1;
664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666	#else
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669	#endif
670	croak ("unable to initialize result pipe(3)");
671
672	respipe_osf [0] = TO_SOCKET (respipe [0]);
673	respipe_osf [1] = TO_SOCKET (respipe [1]);
674	}
675
676	X_THREAD_PROC (aio_proc);
677
678	static void start_thread (void)
679	{
680	worker *wrk = calloc (1, sizeof (worker));
681
682	if (!wrk)
683	croak ("unable to allocate worker thread data");
684
685	X_LOCK (wrklock);
686
687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688	{
689	wrk->prev = &wrk_first;
690	wrk->next = wrk_first.next;
691	wrk_first.next->prev = wrk;
692	wrk_first.next = wrk;
693	++started;
694	}
695	else
696	free (wrk);
697
698	X_UNLOCK (wrklock);
699	}
700
701	static void maybe_start_thread ()
702	{
703	if (get_nthreads () >= wanted)
704	return;
705
706	/* todo: maybe use idle here, but might be less exact */
707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708	return;
709
710	start_thread ();
711	}
712
713	static void req_send (aio_req req)
714	{
715	block_sig ();
716
717	++nreqs;
718
719	X_LOCK (reqlock);
720	++nready;
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	unblock_sig ();
726
727	maybe_start_thread ();
728	}
729
730	static void end_thread (void)
731	{
732	aio_req req;
733
734	Newz (0, req, 1, aio_cb);
735
736	req->type = REQ_QUIT;
737	req->pri = PRI_MAX + PRI_BIAS;
738
739	X_LOCK (reqlock);
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	X_LOCK (wrklock);
745	--started;
746	X_UNLOCK (wrklock);
747	}
748
749	static void set_max_idle (int nthreads)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752	max_idle = nthreads <= 0 ? 1 : nthreads;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754	}
755
756	static void min_parallel (int nthreads)
757	{
758	if (wanted < nthreads)
759	wanted = nthreads;
760	}
761
762	static void max_parallel (int nthreads)
763	{
764	if (wanted > nthreads)
765	wanted = nthreads;
766
767	while (started > wanted)
768	end_thread ();
769	}
770
771	static void poll_wait ()
772	{
773	fd_set rfd;
774
775	while (nreqs)	821	while (eio_nreqs ())
776	{	822	{
777	int size;	823	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	824
		825	X_LOCK (EIO_POOL->reslock);
779	size = res_queue.size;	826	size = EIO_POOL->res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	827	X_UNLOCK (EIO_POOL->reslock);
781		828
782	if (size)	829	if (size)
783	return;	830	return;
784		831
785	maybe_start_thread ();	832	etp_maybe_start_thread (EIO_POOL);
786		833
787	FD_ZERO (&rfd);	834	s_epipe_wait (&respipe);
788	FD_SET (respipe [0], &rfd);
789
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	835	}
792	}	836	}
793		837
794	static int poll_cb ()	838	static int
		839	poll_cb (void)
795	{	840	{
796	dSP;
797	int count = 0;
798	int maxreqs = max_poll_reqs;
799	int do_croak = 0;
800	struct timeval tv_start, tv_now;
801	aio_req req;
802
803	if (max_poll_time)
804	gettimeofday (&tv_start, 0);
805
806	block_sig ();
807
808	for (;;)	841	for (;;)
809	{	842	{
810	for (;;)	843	int res = eio_poll ();
		844
		845	if (res > 0)
		846	croak (0);
		847
		848	if (!max_outstanding || max_outstanding > eio_nreqs ())
		849	return res;
		850
		851	poll_wait ();
		852	}
		853	}
		854
		855	static void ecb_cold
		856	reinit (void)
		857	{
		858	create_respipe ();
		859
		860	if (eio_init (want_poll, done_poll) < 0)
		861	croak ("IO::AIO: unable to initialise eio library");
		862	}
		863
		864	/*****************************************************************************/
		865
		866	static SV *
		867	get_cb (SV *cb_sv)
		868	{
		869	SvGETMAGIC (cb_sv);
		870	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		871	}
		872
		873	static aio_req ecb_noinline
		874	dreq (SV *callback)
		875	{
		876	SV *cb_cv;
		877	aio_req req;
		878	int req_pri = next_pri;
		879	next_pri = EIO_PRI_DEFAULT;
		880
		881	cb_cv = get_cb (callback);
		882
		883	req = calloc (sizeof (*req), 1);
		884	if (!req)
		885	croak ("out of memory during eio_req allocation");
		886
		887	req->callback = SvREFCNT_inc (cb_cv);
		888	req->pri = req_pri;
		889
		890	return req;
		891	}
		892
		893	#define dREQ \
		894	aio_req req = dreq (callback); \
		895
		896	#define REQ_SEND \
		897	PUTBACK; \
		898	req_submit (req); \
		899	SPAGAIN; \
		900	\
		901	if (GIMME_V != G_VOID) \
		902	XPUSHs (req_sv (req, aio_req_stash));
		903
		904	ecb_inline void
		905	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		906	{
		907	if (expect_false (SvROK (path)))
		908	{
		909	SV *rv = SvRV (path);
		910	SV *wdob;
		911
		912	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
811	{	913	{
812	maybe_start_thread ();	914	path = AvARRAY (rv)[1];
		915	wdob = AvARRAY (rv)[0];
813		916
814	X_LOCK (reslock);	917	if (SvOK (wdob))
815	req = reqq_shift (&res_queue);
816
817	if (req)
818	{	918	{
819	--npending;	919	*wd = SvAIO_WD (wdob);
820		920	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
821	if (!res_queue.size)
822	{
823	/* read any signals sent by the worker threads */
824	char buf [4];
825	while (respipe_read (respipe [0], buf, 4) == 4)
826	;
827	}
828	}
829
830	X_UNLOCK (reslock);
831
832	if (!req)
833	break;
834
835	--nreqs;
836
837	if (req->type == REQ_GROUP && req->size)
838	{
839	req->int1 = 1; /* mark request as delayed */
840	continue;
841	}	921	}
842	else	922	else
843	{	923	*wd = EIO_INVALID_WD;
844	if (!req_invoke (req))
845	{
846	req_destroy (req);
847	unblock_sig ();
848	croak (0);
849	}
850
851	count++;
852	}
853
854	req_destroy (req);
855
856	if (maxreqs && !--maxreqs)
857	break;
858
859	if (max_poll_time)
860	{
861	gettimeofday (&tv_now, 0);
862
863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864	break;
865	}
866	}	924	}
		925	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		926	{
		927	*wd = (aio_wd)(long)SvIVX (rv);
		928	*wdsv = SvREFCNT_inc_NN (rv);
		929	*ptr = ".";
		930	return; /* path set to "." */
		931	}
		932	else
		933	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		934	}
867		935
868	if (nreqs <= max_outstanding)	936	*pathsv = newSVsv (path);
		937	*ptr = SvPVbyte_nolen (*pathsv);
		938	}
		939
		940	static void ecb_noinline
		941	req_set_path1 (aio_req req, SV *path)
		942	{
		943	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		944	}
		945
		946	static void ecb_noinline
		947	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		948	{
		949	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		950
		951	switch (SvTYPE (rv))
		952	{
		953	case SVt_PVIO:
		954	case SVt_PVLV:
		955	case SVt_PVGV:
		956	req->type = type_fh;
		957	req->sv1 = newSVsv (fh_or_path);
		958	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
869	break;	959	break;
870		960
871	poll_wait ();	961	default:
872		962	req->type = type_path;
873	++maxreqs;	963	req_set_path1 (req, fh_or_path);
		964	break;
874	}	965	}
875
876	unblock_sig ();
877	return count;
878	}	966	}
879		967
880	/*****************************************************************************/	968	XS(boot_IO__AIO) ecb_cold;
881	/* work around various missing functions */
882		969
883	#if !HAVE_PREADWRITE
884	# define pread aio_pread
885	# define pwrite aio_pwrite
886
887	/*
888	* make our pread/pwrite safe against themselves, but not against
889	* normal read/write by using a mutex. slows down execution a lot,
890	* but that's your problem, not mine.
891	*/
892	static mutex_t preadwritelock = X_MUTEX_INIT;
893
894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895	{
896	ssize_t res;
897	off_t ooffset;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}
908
909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
910	{
911	ssize_t res;
912	off_t ooffset;
913
914	X_LOCK (preadwritelock);
915	ooffset = lseek (fd, 0, SEEK_CUR);
916	lseek (fd, offset, SEEK_SET);
917	res = write (fd, buf, count);
918	lseek (fd, offset, SEEK_SET);
919	X_UNLOCK (preadwritelock);
920
921	return res;
922	}
923	#endif
924
925	#ifndef HAVE_FUTIMES
926
927	# define utimes(path,times) aio_utimes (path, times)
928	# define futimes(fd,times) aio_futimes (fd, times)
929
930	int aio_utimes (const char *filename, const struct timeval times[2])
931	{
932	if (times)
933	{
934	struct utimbuf buf;
935
936	buf.actime = times[0].tv_sec;
937	buf.modtime = times[1].tv_sec;
938
939	return utime (filename, &buf);
940	}
941	else
942	return utime (filename, 0);
943	}
944
945	int aio_futimes (int fd, const struct timeval tv[2])
946	{
947	errno = ENOSYS;
948	return -1;
949	}
950
951	#endif
952
953	#if !HAVE_FDATASYNC
954	# define fdatasync fsync
955	#endif
956
957	#if !HAVE_READAHEAD
958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961	{
962	size_t todo = count;
963	dBUF;
964
965	while (todo > 0)
966	{
967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969	pread (fd, aio_buf, len, offset);
970	offset += len;
971	todo -= len;
972	}
973
974	errno = 0;
975	return count;
976	}
977
978	#endif
979
980	#if !HAVE_READDIR_R
981	# define readdir_r aio_readdir_r
982
983	static mutex_t readdirlock = X_MUTEX_INIT;
984
985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986	{
987	X_DIRENT *e;
988	int errorno;
989
990	X_LOCK (readdirlock);
991
992	e = readdir (dirp);
993	errorno = errno;
994
995	if (e)
996	{
997	*res = ent;
998	strcpy (ent->d_name, e->d_name);
999	}
1000	else
1001	*res = 0;
1002
1003	X_UNLOCK (readdirlock);
1004
1005	errno = errorno;
1006	return e ? 0 : -1;
1007	}
1008	#endif
1009
1010	/* sendfile always needs emulation */
1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012	{
1013	ssize_t res;
1014
1015	if (!count)
1016	return 0;
1017
1018	#if HAVE_SENDFILE
1019	# if __linux
1020	res = sendfile (ofd, ifd, &offset, count);
1021
1022	# elif __freebsd
1023	/*
1024	* Of course, the freebsd sendfile is a dire hack with no thoughts
1025	* wasted on making it similar to other I/O functions.
1026	*/
1027	{
1028	off_t sbytes;
1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030
1031	if (res < 0 && sbytes)
1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033	res = sbytes;
1034	}
1035
1036	# elif __hpux
1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039	# elif __solaris
1040	{
1041	struct sendfilevec vec;
1042	size_t sbytes;
1043
1044	vec.sfv_fd = ifd;
1045	vec.sfv_flag = 0;
1046	vec.sfv_off = offset;
1047	vec.sfv_len = count;
1048
1049	res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051	if (res < 0 && sbytes)
1052	res = sbytes;
1053	}
1054
1055	# endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060
1061	if (res < 0
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063	#if __solaris
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071
1072	res = 0;
1073
1074	while (count)
1075	{
1076	ssize_t cnt;
1077
1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079
1080	if (cnt <= 0)
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085
1086	cnt = write (ofd, aio_buf, cnt);
1087
1088	if (cnt <= 0)
1089	{
1090	if (cnt && !res) res = -1;
1091	break;
1092	}
1093
1094	offset += cnt;
1095	res += cnt;
1096	count -= cnt;
1097	}
1098	}
1099
1100	return res;
1101	}
1102
1103	/* read a full directory */
1104	static void scandir_ (aio_req req, worker *self)
1105	{
1106	DIR *dirp;
1107	union
1108	{
1109	X_DIRENT d;
1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111	} *u;
1112	X_DIRENT *entp;
1113	char *name, *names;
1114	int memlen = 4096;
1115	int memofs = 0;
1116	int res = 0;
1117
1118	X_LOCK (wrklock);
1119	self->dirp = dirp = opendir (req->ptr1);
1120	self->dbuf = u = malloc (sizeof (*u));
1121	req->flags |= FLAG_PTR2_FREE;
1122	req->ptr2 = names = malloc (memlen);
1123	X_UNLOCK (wrklock);
1124
1125	if (dirp && u && names)
1126	for (;;)
1127	{
1128	errno = 0;
1129	readdir_r (dirp, &u->d, &entp);
1130
1131	if (!entp)
1132	break;
1133
1134	name = entp->d_name;
1135
1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137	{
1138	int len = strlen (name) + 1;
1139
1140	res++;
1141
1142	while (memofs + len > memlen)
1143	{
1144	memlen *= 2;
1145	X_LOCK (wrklock);
1146	req->ptr2 = names = realloc (names, memlen);
1147	X_UNLOCK (wrklock);
1148
1149	if (!names)
1150	break;
1151	}
1152
1153	memcpy (names + memofs, name, len);
1154	memofs += len;
1155	}
1156	}
1157
1158	if (errno)
1159	res = -1;
1160
1161	req->result = res;
1162	}
1163
1164	/*****************************************************************************/
1165
1166	X_THREAD_PROC (aio_proc)
1167	{
1168	{//D
1169	aio_req req;
1170	struct timespec ts;
1171	worker *self = (worker *)thr_arg;
1172
1173	/* try to distribute timeouts somewhat randomly */
1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176	for (;;)
1177	{
1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180	X_LOCK (reqlock);
1181
1182	for (;;)
1183	{
1184	self->req = req = reqq_shift (&req_queue);
1185
1186	if (req)
1187	break;
1188
1189	++idle;
1190
1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192	== ETIMEDOUT)
1193	{
1194	if (idle > max_idle)
1195	{
1196	--idle;
1197	X_UNLOCK (reqlock);
1198	X_LOCK (wrklock);
1199	--started;
1200	X_UNLOCK (wrklock);
1201	goto quit;
1202	}
1203
1204	/* we are allowed to idle, so do so without any timeout */
1205	X_COND_WAIT (reqwait, reqlock);
1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207	}
1208
1209	--idle;
1210	}
1211
1212	--nready;
1213
1214	X_UNLOCK (reqlock);
1215
1216	errno = 0; /* strictly unnecessary */
1217
1218	if (!(req->flags & FLAG_CANCELLED))
1219	switch (req->type)
1220	{
1221	case REQ_READ: req->result = req->offs >= 0
1222	? pread (req->int1, req->ptr1, req->size, req->offs)
1223	: read (req->int1, req->ptr1, req->size); break;
1224	case REQ_WRITE: req->result = req->offs >= 0
1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226	: write (req->int1, req->ptr1, req->size); break;
1227
1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243	case REQ_CLOSE: req->result = close (req->int1); break;
1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
1255	case REQ_READDIR: scandir_ (req, self); break;
1256
1257	case REQ_BUSY:
1258	#ifdef _WIN32
1259	Sleep (req->nv1 * 1000.);
1260	#else
1261	{
1262	struct timeval tv;
1263
1264	tv.tv_sec = req->nv1;
1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267	req->result = select (0, 0, 0, 0, &tv);
1268	}
1269	#endif
1270	break;
1271
1272	case REQ_UTIME:
1273	case REQ_FUTIME:
1274	{
1275	struct timeval tv[2];
1276	struct timeval *times;
1277
1278	if (req->nv1 != -1. || req->nv2 != -1.)
1279	{
1280	tv[0].tv_sec = req->nv1;
1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282	tv[1].tv_sec = req->nv2;
1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285	times = tv;
1286	}
1287	else
1288	times = 0;
1289
1290
1291	req->result = req->type == REQ_FUTIME
1292	? futimes (req->int1, times)
1293	: utimes (req->ptr1, times);
1294	}
1295
1296	case REQ_GROUP:
1297	case REQ_NOP:
1298	break;
1299
1300	case REQ_QUIT:
1301	goto quit;
1302
1303	default:
1304	req->result = -1;
1305	break;
1306	}
1307
1308	req->errorno = errno;
1309
1310	X_LOCK (reslock);
1311
1312	++npending;
1313
1314	if (!reqq_push (&res_queue, req))
1315	{
1316	/* write a dummy byte to the pipe so fh becomes ready */
1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319	/* optionally signal the main thread asynchronously */
1320	if (main_sig)
1321	pthread_kill (main_tid, main_sig);
1322	}
1323
1324	self->req = 0;
1325	worker_clear (self);
1326
1327	X_UNLOCK (reslock);
1328	}
1329
1330	quit:
1331	X_LOCK (wrklock);
1332	worker_free (self);
1333	X_UNLOCK (wrklock);
1334
1335	return 0;
1336	}//D
1337	}
1338
1339	/*****************************************************************************/
1340
1341	static void atfork_prepare (void)
1342	{
1343	X_LOCK (wrklock);
1344	X_LOCK (reqlock);
1345	X_LOCK (reslock);
1346	#if !HAVE_PREADWRITE
1347	X_LOCK (preadwritelock);
1348	#endif
1349	#if !HAVE_READDIR_R
1350	X_LOCK (readdirlock);
1351	#endif
1352	}
1353
1354	static void atfork_parent (void)
1355	{
1356	#if !HAVE_READDIR_R
1357	X_UNLOCK (readdirlock);
1358	#endif
1359	#if !HAVE_PREADWRITE
1360	X_UNLOCK (preadwritelock);
1361	#endif
1362	X_UNLOCK (reslock);
1363	X_UNLOCK (reqlock);
1364	X_UNLOCK (wrklock);
1365	}
1366
1367	static void atfork_child (void)
1368	{
1369	aio_req prv;
1370
1371	while (prv = reqq_shift (&req_queue))
1372	req_destroy (prv);
1373
1374	while (prv = reqq_shift (&res_queue))
1375	req_destroy (prv);
1376
1377	while (wrk_first.next != &wrk_first)
1378	{
1379	worker *wrk = wrk_first.next;
1380
1381	if (wrk->req)
1382	req_destroy (wrk->req);
1383
1384	worker_clear (wrk);
1385	worker_free (wrk);
1386	}
1387
1388	started = 0;
1389	idle = 0;
1390	nreqs = 0;
1391	nready = 0;
1392	npending = 0;
1393
1394	create_respipe ();
1395
1396	atfork_parent ();
1397	}
1398
1399	#define dREQ \
1400	aio_req req; \
1401	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \
1403	\
1404	if (SvOK (callback) && !SvROK (callback)) \
1405	croak ("callback must be undef or of reference type"); \
1406	\
1407	Newz (0, req, 1, aio_cb); \
1408	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \
1410	\
1411	req->callback = newSVsv (callback); \
1412	req->pri = req_pri
1413
1414	#define REQ_SEND \
1415	req_send (req); \
1416	\
1417	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1419
1420	MODULE = IO::AIO PACKAGE = IO::AIO	970	MODULE = IO::AIO PACKAGE = IO::AIO
1421		971
1422	PROTOTYPES: ENABLE	972	PROTOTYPES: ENABLE
1423		973
1424	BOOT:	974	BOOT:
1425	{	975	{
		976	static const struct {
		977	const char *name;
		978	IV iv;
		979	} *civ, const_iv[] = {
		980	# define const_niv(name, value) { # name, (IV) value },
		981	# define const_iv(name) { # name, (IV) name },
		982	# define const_eio(name) { # name, (IV) EIO_ ## name },
		983
		984	/* you have to re-run ./gendef0 after adding/removing any constants here */
		985	/* the first block can be undef if missing */
		986	const_iv (ENOSYS)
		987	const_iv (EXDEV)
		988	const_iv (EBADR)
		989
		990	/* for lseek */
		991	const_iv (SEEK_DATA)
		992	const_iv (SEEK_HOLE)
		993
		994	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		995	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		996	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		997	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		998	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		999	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1000
		1001	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1002	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1003	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1004	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1005	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1006
		1007	/* the second block will be 0 when missing */
		1008	const_iv (O_RDONLY)
		1009	const_iv (O_WRONLY)
		1010	const_iv (O_RDWR)
		1011	const_iv (O_CREAT)
		1012	const_iv (O_TRUNC)
		1013	const_iv (O_EXCL)
		1014	const_iv (O_APPEND)
		1015
		1016	const_iv (O_ASYNC)
		1017	const_iv (O_DIRECT)
		1018	const_iv (O_NOATIME)
		1019
		1020	const_iv (O_CLOEXEC)
		1021	const_iv (O_NOCTTY)
		1022	const_iv (O_NOFOLLOW)
		1023	const_iv (O_NONBLOCK)
		1024	const_iv (O_EXEC)
		1025	const_iv (O_SEARCH)
		1026	const_iv (O_DIRECTORY)
		1027	const_iv (O_DSYNC)
		1028	const_iv (O_RSYNC)
		1029	const_iv (O_SYNC)
		1030	const_iv (O_PATH)
		1031	const_iv (O_TMPFILE)
		1032	const_iv (O_TTY_INIT)
		1033
		1034	const_iv (S_IFIFO)
		1035	const_iv (S_IFCHR)
		1036	const_iv (S_IFBLK)
		1037	const_iv (S_IFLNK)
		1038	const_iv (S_IFREG)
		1039	const_iv (S_IFDIR)
		1040	const_iv (S_IFWHT)
		1041	const_iv (S_IFSOCK)
		1042	const_iv (S_IFMT)
		1043
		1044	const_iv (ST_RDONLY)
		1045	const_iv (ST_NOSUID)
		1046	const_iv (ST_NODEV)
		1047	const_iv (ST_NOEXEC)
		1048	const_iv (ST_SYNCHRONOUS)
		1049	const_iv (ST_MANDLOCK)
		1050	const_iv (ST_WRITE)
		1051	const_iv (ST_APPEND)
		1052	const_iv (ST_IMMUTABLE)
		1053	const_iv (ST_NOATIME)
		1054	const_iv (ST_NODIRATIME)
		1055	const_iv (ST_RELATIME)
		1056
		1057	const_iv (PROT_NONE)
		1058	const_iv (PROT_EXEC)
		1059	const_iv (PROT_READ)
		1060	const_iv (PROT_WRITE)
		1061
		1062	const_iv (MAP_PRIVATE)
		1063	const_iv (MAP_SHARED)
		1064	const_iv (MAP_FIXED)
		1065	const_iv (MAP_ANONYMOUS)
		1066
		1067	/* linuxish */
		1068	const_iv (MAP_LOCKED)
		1069	const_iv (MAP_NORESERVE)
		1070	const_iv (MAP_POPULATE)
		1071	const_iv (MAP_NONBLOCK)
		1072	const_iv (MAP_GROWSDOWN)
		1073	const_iv (MAP_32BIT)
		1074	const_iv (MAP_HUGETLB)
		1075	const_iv (MAP_STACK)
		1076
		1077	const_iv (F_DUPFD_CLOEXEC)
		1078
		1079	const_iv (F_OFD_GETLK)
		1080	const_iv (F_OFD_SETLK)
		1081	const_iv (F_OFD_GETLKW)
		1082
		1083	const_iv (FIFREEZE)
		1084	const_iv (FITHAW)
		1085	const_iv (FITRIM)
		1086	const_iv (FICLONE)
		1087	const_iv (FICLONERANGE)
		1088	const_iv (FIDEDUPERANGE)
		1089
		1090	const_iv (FS_IOC_GETFLAGS)
		1091	const_iv (FS_IOC_SETFLAGS)
		1092	const_iv (FS_IOC_GETVERSION)
		1093	const_iv (FS_IOC_SETVERSION)
		1094	const_iv (FS_IOC_FIEMAP)
		1095	const_iv (FS_IOC_FSGETXATTR)
		1096	const_iv (FS_IOC_FSSETXATTR)
		1097	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1098	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1099	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1100
		1101	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1102
		1103	const_iv (FS_SECRM_FL)
		1104	const_iv (FS_UNRM_FL)
		1105	const_iv (FS_COMPR_FL)
		1106	const_iv (FS_SYNC_FL)
		1107	const_iv (FS_IMMUTABLE_FL)
		1108	const_iv (FS_APPEND_FL)
		1109	const_iv (FS_NODUMP_FL)
		1110	const_iv (FS_NOATIME_FL)
		1111	const_iv (FS_DIRTY_FL)
		1112	const_iv (FS_COMPRBLK_FL)
		1113	const_iv (FS_NOCOMP_FL)
		1114	const_iv (FS_ENCRYPT_FL)
		1115	const_iv (FS_BTREE_FL)
		1116	const_iv (FS_INDEX_FL)
		1117	const_iv (FS_JOURNAL_DATA_FL)
		1118	const_iv (FS_NOTAIL_FL)
		1119	const_iv (FS_DIRSYNC_FL)
		1120	const_iv (FS_TOPDIR_FL)
		1121	const_iv (FS_FL_USER_MODIFIABLE)
		1122
		1123	const_iv (FS_XFLAG_REALTIME)
		1124	const_iv (FS_XFLAG_PREALLOC)
		1125	const_iv (FS_XFLAG_IMMUTABLE)
		1126	const_iv (FS_XFLAG_APPEND)
		1127	const_iv (FS_XFLAG_SYNC)
		1128	const_iv (FS_XFLAG_NOATIME)
		1129	const_iv (FS_XFLAG_NODUMP)
		1130	const_iv (FS_XFLAG_RTINHERIT)
		1131	const_iv (FS_XFLAG_PROJINHERIT)
		1132	const_iv (FS_XFLAG_NOSYMLINKS)
		1133	const_iv (FS_XFLAG_EXTSIZE)
		1134	const_iv (FS_XFLAG_EXTSZINHERIT)
		1135	const_iv (FS_XFLAG_NODEFRAG)
		1136	const_iv (FS_XFLAG_FILESTREAM)
		1137	const_iv (FS_XFLAG_DAX)
		1138	const_iv (FS_XFLAG_HASATTR)
		1139
		1140	const_iv (FIEMAP_FLAG_SYNC)
		1141	const_iv (FIEMAP_FLAG_XATTR)
		1142	const_iv (FIEMAP_FLAGS_COMPAT)
		1143	const_iv (FIEMAP_EXTENT_LAST)
		1144	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1145	const_iv (FIEMAP_EXTENT_DELALLOC)
		1146	const_iv (FIEMAP_EXTENT_ENCODED)
		1147	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1148	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1149	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1150	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1151	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1152	const_iv (FIEMAP_EXTENT_MERGED)
		1153	const_iv (FIEMAP_EXTENT_SHARED)
		1154
		1155	const_iv (SPLICE_F_MOVE)
		1156	const_iv (SPLICE_F_NONBLOCK)
		1157	const_iv (SPLICE_F_MORE)
		1158	const_iv (SPLICE_F_GIFT)
		1159
		1160	/* these are libeio constants, and are independent of gendef0 */
		1161	const_eio (SEEK_SET)
		1162	const_eio (SEEK_CUR)
		1163	const_eio (SEEK_END)
		1164
		1165	const_eio (MCL_FUTURE)
		1166	const_eio (MCL_CURRENT)
		1167
		1168	const_eio (MS_ASYNC)
		1169	const_eio (MS_INVALIDATE)
		1170	const_eio (MS_SYNC)
		1171
		1172	const_eio (MT_MODIFY)
		1173
		1174	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1175	const_eio (SYNC_FILE_RANGE_WRITE)
		1176	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1177
		1178	const_eio (FALLOC_FL_KEEP_SIZE)
		1179	const_eio (FALLOC_FL_PUNCH_HOLE)
		1180	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1181	const_eio (FALLOC_FL_ZERO_RANGE)
		1182	const_eio (FALLOC_FL_INSERT_RANGE)
		1183	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1184
		1185	const_eio (RENAME_NOREPLACE)
		1186	const_eio (RENAME_EXCHANGE)
		1187	const_eio (RENAME_WHITEOUT)
		1188
		1189	const_eio (READDIR_DENTS)
		1190	const_eio (READDIR_DIRS_FIRST)
		1191	const_eio (READDIR_STAT_ORDER)
		1192	const_eio (READDIR_FOUND_UNKNOWN)
		1193
		1194	const_eio (DT_UNKNOWN)
		1195	const_eio (DT_FIFO)
		1196	const_eio (DT_CHR)
		1197	const_eio (DT_DIR)
		1198	const_eio (DT_BLK)
		1199	const_eio (DT_REG)
		1200	const_eio (DT_LNK)
		1201	const_eio (DT_SOCK)
		1202	const_eio (DT_WHT)
		1203	};
		1204
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	1205	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1206	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1207	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1208	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1427		1209
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1210	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1211	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433	#ifdef _WIN32
1434	X_MUTEX_CHECK (wrklock);
1435	X_MUTEX_CHECK (reslock);
1436	X_MUTEX_CHECK (reqlock);
1437	X_MUTEX_CHECK (reqwait);
1438	X_MUTEX_CHECK (preadwritelock);
1439	X_MUTEX_CHECK (readdirlock);
1440		1212
1441	X_COND_CHECK (reqwait);	1213	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1442	#else
1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445	#endif
1446		1214
1447	create_respipe ();	1215	reinit ();
1448
1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1450	}	1216	}
1451		1217
1452	void	1218	void
		1219	reinit ()
		1220	PROTOTYPE:
		1221
		1222	void
1453	max_poll_reqs (int nreqs)	1223	max_poll_reqs (unsigned int nreqs)
1454	PROTOTYPE: $	1224	PROTOTYPE: $
1455	CODE:	1225	CODE:
1456	max_poll_reqs = nreqs;	1226	eio_set_max_poll_reqs (nreqs);
1457		1227
1458	void	1228	void
1459	max_poll_time (double nseconds)	1229	max_poll_time (double nseconds)
1460	PROTOTYPE: $	1230	PROTOTYPE: $
1461	CODE:	1231	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	1232	eio_set_max_poll_time (nseconds);
1463		1233
1464	void	1234	void
1465	min_parallel (int nthreads)	1235	min_parallel (unsigned int nthreads)
1466	PROTOTYPE: $
1467
1468	void
1469	max_parallel (int nthreads)
1470	PROTOTYPE: $
1471
1472	void
1473	max_idle (int nthreads)
1474	PROTOTYPE: $	1236	PROTOTYPE: $
1475	CODE:	1237	CODE:
1476	set_max_idle (nthreads);	1238	eio_set_min_parallel (nthreads);
1477		1239
1478	int	1240	void
1479	max_outstanding (int maxreqs)	1241	max_parallel (unsigned int nthreads)
1480	PROTOTYPE: $	1242	PROTOTYPE: $
1481	CODE:	1243	CODE:
1482	RETVAL = max_outstanding;	1244	eio_set_max_parallel (nthreads);
		1245
		1246	void
		1247	max_idle (unsigned int nthreads)
		1248	PROTOTYPE: $
		1249	CODE:
		1250	eio_set_max_idle (nthreads);
		1251
		1252	void
		1253	idle_timeout (unsigned int seconds)
		1254	PROTOTYPE: $
		1255	CODE:
		1256	eio_set_idle_timeout (seconds);
		1257
		1258	void
		1259	max_outstanding (unsigned int maxreqs)
		1260	PROTOTYPE: $
		1261	CODE:
1483	max_outstanding = maxreqs;	1262	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		1263
1487	void	1264	void
1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1265	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1489	PROTOTYPE: $$$;$
1490	PPCODE:	1266	PPCODE:
1491	{	1267	{
1492	dREQ;	1268	dREQ;
1493		1269
		1270	req->type = EIO_WD_OPEN;
		1271	req_set_path1 (req, pathname);
		1272
		1273	REQ_SEND;
		1274	}
		1275
		1276	void
		1277	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1278	PPCODE:
		1279	{
		1280	dREQ;
		1281
1494	req->type = REQ_OPEN;	1282	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	1283	req_set_path1 (req, pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	1284	req->int1 = flags;
1498	req->mode = mode;	1285	req->int2 = mode;
1499		1286
1500	REQ_SEND;	1287	REQ_SEND;
1501	}	1288	}
1502		1289
1503	void	1290	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1291	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1505	PROTOTYPE: $;$
1506	ALIAS:	1292	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	1293	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	1294	aio_fdatasync = EIO_FDATASYNC
		1295	aio_syncfs = EIO_SYNCFS
1510	PPCODE:	1296	PPCODE:
1511	{	1297	{
		1298	int fd = s_fileno_croak (fh, 0);
1512	dREQ;	1299	dREQ;
1513		1300
1514	req->type = ix;	1301	req->type = ix;
1515	req->sv1 = newSVsv (fh);	1302	req->sv1 = newSVsv (fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1303	req->int1 = fd;
1517		1304
1518	REQ_SEND (req);	1305	REQ_SEND;
1519	}	1306	}
1520		1307
1521	void	1308	void
		1309	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1310	PPCODE:
		1311	{
		1312	int fd = s_fileno_croak (fh, 0);
		1313	dREQ;
		1314
		1315	req->type = EIO_SYNC_FILE_RANGE;
		1316	req->sv1 = newSVsv (fh);
		1317	req->int1 = fd;
		1318	req->offs = offset;
		1319	req->size = nbytes;
		1320	req->int2 = flags;
		1321
		1322	REQ_SEND;
		1323	}
		1324
		1325	void
		1326	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1327	PPCODE:
		1328	{
		1329	int fd = s_fileno_croak (fh, 0);
		1330	dREQ;
		1331
		1332	req->type = EIO_FALLOCATE;
		1333	req->sv1 = newSVsv (fh);
		1334	req->int1 = fd;
		1335	req->int2 = mode;
		1336	req->offs = offset;
		1337	req->size = len;
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1347	int fd = s_fileno_croak (fh, 0);
		1348	dREQ;
		1349
		1350	if (expect_false (close_fd < 0))
		1351	{
		1352	int pipefd [2];
		1353
		1354	if (
		1355	#ifdef _WIN32
		1356	_pipe (pipefd, 1, _O_BINARY) < 0
		1357	#else
		1358	pipe (pipefd) < 0
		1359	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1360	#endif
		1361	|| close (pipefd [1]) < 0
		1362	)
		1363	abort (); /*D*/
		1364
		1365	close_fd = pipefd [0];
		1366	}
		1367
		1368	req->type = EIO_DUP2;
		1369	req->int1 = close_fd;
		1370	req->sv2 = newSVsv (fh);
		1371	req->int2 = fd;
		1372
		1373	REQ_SEND;
		1374	}
		1375
		1376	void
		1377	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1378	PPCODE:
		1379	{
		1380	int fd = s_fileno_croak (fh, 0);
		1381	dREQ;
		1382
		1383	req->type = EIO_SEEK;
		1384	req->sv1 = newSVsv (fh);
		1385	req->int1 = fd;
		1386	req->offs = SvVAL64 (offset);
		1387	req->int2 = whence;
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1393	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1523	ALIAS:	1394	ALIAS:
1524	aio_read = REQ_READ	1395	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	1396	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$
1527	PPCODE:	1397	PPCODE:
1528	{	1398	{
1529	STRLEN svlen;	1399	STRLEN svlen;
		1400	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530	char *svptr = SvPVbyte (data, svlen);	1401	char *svptr = SvPVbyte (data, svlen);
1531	UV len = SvUV (length);	1402	UV len = SvUV (length);
1532		1403
1533	SvUPGRADE (data, SVt_PV);
1534	SvPOK_on (data);
1535
1536	if (dataoffset < 0)	1404	if (dataoffset < 0)
1537	dataoffset += svlen;	1405	dataoffset += svlen;
1538		1406
1539	if (dataoffset < 0 || dataoffset > svlen)	1407	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	1408	croak ("dataoffset outside of data scalar");
1541		1409
1542	if (ix == REQ_WRITE)	1410	if (ix == EIO_WRITE)
1543	{	1411	{
1544	/* write: check length and adjust. */	1412	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	1413	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	1414	len = svlen - dataoffset;
1547	}	1415	}
1548	else	1416	else
1549	{	1417	{
1550	/* read: grow scalar as necessary */	1418	/* read: check type and grow scalar as necessary */
		1419	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1551	svptr = SvGROW (data, len + dataoffset + 1);	1420	svptr = sv_grow (data, len + dataoffset);
		1421	else if (SvCUR (data) < len + dataoffset)
		1422	croak ("length + dataoffset outside of scalar, and cannot grow");
1552	}	1423	}
1553
1554	if (len < 0)
1555	croak ("length must not be negative");
1556		1424
1557	{	1425	{
1558	dREQ;	1426	dREQ;
1559		1427
1560	req->type = ix;	1428	req->type = ix;
1561	req->sv1 = newSVsv (fh);	1429	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1430	req->int1 = fd;
1563	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1431	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	1432	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	1433	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	1434	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	1435	req->stroffset = dataoffset;
1569		1436
1570	if (!SvREADONLY (data))	1437	if (!SvREADONLY (data))
1571	{	1438	{
1572	SvREADONLY_on (data);	1439	SvREADONLY_on (data);
…		…
1576	REQ_SEND;	1443	REQ_SEND;
1577	}	1444	}
1578	}	1445	}
1579		1446
1580	void	1447	void
1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1448	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1582	PROTOTYPE: $$;$	1449	ALIAS:
		1450	aio_ioctl = EIO_IOCTL
		1451	aio_fcntl = EIO_FCNTL
1583	PPCODE:	1452	PPCODE:
1584	{	1453	{
1585	SV *data;	1454	int fd = s_fileno_croak (fh, 0);
1586	dREQ;	1455	char *svptr;
1587		1456
1588	data = newSV (NAME_MAX);	1457	if (SvPOK (arg) || !SvNIOK (arg))
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;
1592	req->sv1 = newSVsv (path);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596
1597	REQ_SEND;
1598	}
1599
1600	void
1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1602	PROTOTYPE: $$$$;$
1603	PPCODE:
1604	{
1605	dREQ;
1606
1607	req->type = REQ_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1610	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1612	req->offs = SvVAL64 (in_offset);
1613	req->size = length;
1614
1615	REQ_SEND;
1616	}
1617
1618	void
1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1620	PROTOTYPE: $$$;$
1621	PPCODE:
1622	{
1623	dREQ;
1624
1625	req->type = REQ_READAHEAD;
1626	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1628	req->offs = SvVAL64 (offset);
1629	req->size = length;
1630
1631	REQ_SEND;
1632	}
1633
1634	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636	ALIAS:
1637	aio_stat = REQ_STAT
1638	aio_lstat = REQ_LSTAT
1639	PPCODE:
1640	{
1641	dREQ;
1642
1643	req->ptr2 = malloc (sizeof (Stat_t));
1644	if (!req->ptr2)
1645	{	1458	{
1646	req_destroy (req);	1459	STRLEN svlen;
1647	croak ("out of memory during aio_stat statdata allocation");	1460	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1648	}	1461	#ifdef IOCPARM_LEN
		1462	STRLEN need = IOCPARM_LEN (request);
		1463	#else
		1464	STRLEN need = 256;
		1465	#endif
1649		1466
1650	req->flags |= FLAG_PTR2_FREE;	1467	if (svlen < need)
1651	req->sv1 = newSVsv (fh_or_path);	1468	svptr = SvGROW (arg, need);
1652
1653	if (SvPOK (fh_or_path))
1654	{
1655	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}	1469	}
1658	else	1470	else
		1471	svptr = (char *)SvIV (arg);
		1472
1659	{	1473	{
		1474	dREQ;
		1475
1660	req->type = REQ_FSTAT;	1476	req->type = ix;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1477	req->sv1 = newSVsv (fh);
		1478	req->int1 = fd;
		1479	req->int2 = (long)request;
		1480	req->sv2 = SvREFCNT_inc (arg);
		1481	req->ptr2 = svptr;
		1482
		1483	REQ_SEND;
1662	}	1484	}
		1485	}
		1486
		1487	void
		1488	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1489	ALIAS:
		1490	aio_readlink = EIO_READLINK
		1491	aio_realpath = EIO_REALPATH
		1492	PPCODE:
		1493	{
		1494	dREQ;
		1495
		1496	req->type = ix;
		1497	req_set_path1 (req, pathname);
1663		1498
1664	REQ_SEND;	1499	REQ_SEND;
1665	}	1500	}
1666		1501
1667	void	1502	void
		1503	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1504	PPCODE:
		1505	{
		1506	int ifd = s_fileno_croak (in_fh , 0);
		1507	int ofd = s_fileno_croak (out_fh, 1);
		1508	dREQ;
		1509
		1510	req->type = EIO_SENDFILE;
		1511	req->sv1 = newSVsv (out_fh);
		1512	req->int1 = ofd;
		1513	req->sv2 = newSVsv (in_fh);
		1514	req->int2 = ifd;
		1515	req->offs = in_offset;
		1516	req->size = length;
		1517
		1518	REQ_SEND;
		1519	}
		1520
		1521	void
		1522	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1523	PPCODE:
		1524	{
		1525	int fd = s_fileno_croak (fh, 0);
		1526	dREQ;
		1527
		1528	req->type = EIO_READAHEAD;
		1529	req->sv1 = newSVsv (fh);
		1530	req->int1 = fd;
		1531	req->offs = offset;
		1532	req->size = length;
		1533
		1534	REQ_SEND;
		1535	}
		1536
		1537	void
		1538	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1539	ALIAS:
		1540	aio_stat = EIO_STAT
		1541	aio_lstat = EIO_LSTAT
		1542	aio_statvfs = EIO_STATVFS
		1543	PPCODE:
		1544	{
		1545	dREQ;
		1546
		1547	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1548
		1549	REQ_SEND;
		1550	}
		1551
		1552	UV
		1553	major (UV dev)
		1554	ALIAS:
		1555	minor = 1
		1556	CODE:
		1557	RETVAL = ix ? minor (dev) : major (dev);
		1558	OUTPUT:
		1559	RETVAL
		1560
		1561	UV
		1562	makedev (UV maj, UV min)
		1563	CODE:
		1564	RETVAL = makedev (maj, min);
		1565	OUTPUT:
		1566	RETVAL
		1567
		1568	void
1668	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1569	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1669	PPCODE:	1570	PPCODE:
1670	{	1571	{
1671	dREQ;	1572	dREQ;
1672		1573
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1574	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1575	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	1576	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1676
1677	if (SvPOK (fh_or_path))
1678	{
1679	req->type = REQ_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}
1682	else
1683	{
1684	req->type = REQ_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}
1687		1577
1688	REQ_SEND;	1578	REQ_SEND;
1689	}	1579	}
1690		1580
1691	void	1581	void
1692	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1582	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1693	PPCODE:	1583	PPCODE:
1694	{	1584	{
1695	dREQ;	1585	dREQ;
1696		1586
1697	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1587	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		1588	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1700	if (SvPOK (fh_or_path))
1701	{
1702	req->type = REQ_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}
1705	else
1706	{
1707	req->type = REQ_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}
1710		1589
1711	REQ_SEND;	1590	REQ_SEND;
1712	}	1591	}
1713		1592
1714	void	1593	void
1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1594	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1716	PPCODE:	1595	PPCODE:
1717	{	1596	{
1718	dREQ;	1597	dREQ;
1719		1598
1720	req->mode = mode;	1599	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	1600	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1722
1723	if (SvPOK (fh_or_path))
1724	{
1725	req->type = REQ_CHMOD;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}
1728	else
1729	{
1730	req->type = REQ_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}
1733		1601
1734	REQ_SEND;	1602	REQ_SEND;
1735	}	1603	}
1736		1604
1737	void	1605	void
1738	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1606	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1739	PPCODE:	1607	PPCODE:
1740	{	1608	{
1741	dREQ;	1609	dREQ;
1742		1610
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1611	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1612	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	1613	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1746
1747	if (SvPOK (fh_or_path))
1748	{
1749	req->type = REQ_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}
1752	else
1753	{
1754	req->type = REQ_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}
1757		1614
1758	REQ_SEND;	1615	REQ_SEND;
1759	}	1616	}
1760		1617
1761	void	1618	void
		1619	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->type = EIO_READDIR;
		1625	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1626
		1627	if (flags & EIO_READDIR_DENTS)
		1628	req->int1 |= EIO_READDIR_CUSTOM2;
		1629
		1630	req_set_path1 (req, pathname);
		1631
		1632	REQ_SEND;
		1633	}
		1634
		1635	void
		1636	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1637	PPCODE:
		1638	{
		1639	dREQ;
		1640
		1641	req->type = EIO_MKDIR;
		1642	req->int2 = mode;
		1643	req_set_path1 (req, pathname);
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1649	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1763	ALIAS:	1650	ALIAS:
1764	aio_unlink = REQ_UNLINK	1651	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	1652	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	1653	aio_readdir = EIO_READDIR
1767	PPCODE:	1654	PPCODE:
1768	{	1655	{
1769	dREQ;	1656	dREQ;
1770		1657
1771	req->type = ix;	1658	req->type = ix;
1772	req->sv1 = newSVsv (pathname);	1659	req_set_path1 (req, pathname);
1773	req->ptr1 = SvPVbyte_nolen (req->sv1);
1774		1660
1775	REQ_SEND;	1661	REQ_SEND;
1776	}	1662	}
1777		1663
1778	void	1664	void
1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1665	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1666	ALIAS:
		1667	aio_link = EIO_LINK
		1668	aio_symlink = EIO_SYMLINK
		1669	aio_rename = EIO_RENAME
1780	PPCODE:	1670	PPCODE:
1781	{	1671	{
1782	dREQ;	1672	eio_wd wd2 = 0;
1783
1784	req->type = REQ_MKDIR;
1785	req->sv1 = newSVsv (pathname);
1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1787	req->mode = mode;
1788
1789	REQ_SEND;
1790	}
1791
1792	void
1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:
1795	aio_link = REQ_LINK
1796	aio_symlink = REQ_SYMLINK
1797	aio_rename = REQ_RENAME
1798	PPCODE:
1799	{
1800	dREQ;	1673	dREQ;
1801		1674
1802	req->type = ix;	1675	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);	1676	req_set_path1 (req, oldpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);	1677	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1805	req->sv1 = newSVsv (newpath);	1678	req->int3 = (long)wd2;
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807		1679
1808	REQ_SEND;	1680	REQ_SEND;
1809	}	1681	}
1810		1682
1811	void	1683	void
1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1684	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1813	PPCODE:	1685	PPCODE:
1814	{	1686	{
		1687	eio_wd wd2 = 0;
1815	dREQ;	1688	dREQ;
1816		1689
1817	req->type = REQ_MKNOD;	1690	req->type = EIO_RENAME;
1818	req->sv1 = newSVsv (pathname);	1691	req_set_path1 (req, oldpath);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);	1692	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1820	req->mode = (mode_t)mode;	1693	req->int2 = flags;
1821	req->offs = dev;	1694	req->int3 = (long)wd2;
1822		1695
1823	REQ_SEND;	1696	REQ_SEND;
1824	}	1697	}
1825		1698
1826	void	1699	void
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	1700	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1828	PPCODE:	1701	PPCODE:
1829	{	1702	{
1830	dREQ;	1703	dREQ;
		1704
		1705	req->type = EIO_MKNOD;
		1706	req->int2 = (mode_t)mode;
		1707	req->offs = dev;
		1708	req_set_path1 (req, pathname);
		1709
		1710	REQ_SEND;
		1711	}
1831		1712
		1713	void
		1714	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1715	ALIAS:
		1716	aio_mtouch = EIO_MTOUCH
		1717	aio_msync = EIO_MSYNC
		1718	PPCODE:
		1719	{
		1720	STRLEN svlen;
		1721	char *svptr = SvPVbyte (data, svlen);
		1722	UV len = SvUV (length);
		1723
		1724	if (flags < 0)
		1725	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1726
		1727	if (offset < 0)
		1728	offset += svlen;
		1729
		1730	if (offset < 0 || offset > svlen)
		1731	croak ("offset outside of scalar");
		1732
		1733	if (!SvOK (length) || len + offset > svlen)
		1734	len = svlen - offset;
		1735
		1736	{
		1737	dREQ;
		1738
		1739	req->type = ix;
		1740	req->sv2 = SvREFCNT_inc (data);
		1741	req->ptr2 = (char *)svptr + offset;
		1742	req->size = len;
		1743	req->int1 = flags;
		1744
		1745	REQ_SEND;
		1746	}
		1747	}
		1748
		1749	void
		1750	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1751	PPCODE:
		1752	{
		1753	STRLEN svlen;
		1754	char *svptr = SvPVbyte (data, svlen);
		1755	UV len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	{
		1767	dREQ;
		1768
		1769	req->type = EIO_MLOCK;
		1770	req->sv2 = SvREFCNT_inc (data);
		1771	req->ptr2 = (char *)svptr + offset;
		1772	req->size = len;
		1773
		1774	REQ_SEND;
		1775	}
		1776	}
		1777
		1778	void
		1779	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1780	PPCODE:
		1781	{
		1782	dREQ;
		1783
		1784	req->type = EIO_MLOCKALL;
		1785	req->int1 = flags;
		1786
		1787	REQ_SEND;
		1788	}
		1789
		1790	void
		1791	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1792	PPCODE:
		1793	{
		1794	int fd = s_fileno_croak (fh, 0);
		1795	dREQ;
		1796
		1797	req->type = EIO_CUSTOM;
		1798	req->sv1 = newSVsv (fh);
		1799	req->int1 = fd;
		1800
		1801	req->feed = fiemap;
		1802	#if HAVE_FIEMAP
		1803	/* keep our fingers crossed that the next two types are 64 bit */
		1804	req->offs = start;
		1805	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1806	req->int2 = flags;
		1807	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1808	#endif
		1809
		1810	REQ_SEND;
		1811	}
		1812
		1813	void
		1814	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1815	PPCODE:
		1816	{
		1817	char *svptr = 0;
		1818
		1819	sv_clear_foreign (data);
		1820
		1821	if (length) /* known length, directly read into scalar */
		1822	{
		1823	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1824	svptr = sv_grow (data, length);
		1825	else if (SvCUR (data) < length)
		1826	croak ("length outside of scalar, and cannot grow");
		1827	else
		1828	svptr = SvPVbyte_nolen (data);
		1829	}
		1830
		1831	{
		1832	dREQ;
		1833
		1834	req->type = EIO_SLURP;
		1835	req_set_path1 (req, pathname);
		1836	req->offs = offset;
		1837	req->size = length;
		1838	req->sv2 = SvREFCNT_inc (data);
		1839	req->ptr2 = svptr;
		1840
		1841	if (!SvREADONLY (data))
		1842	{
		1843	SvREADONLY_on (data);
		1844	req->flags |= FLAG_SV2_RO_OFF;
		1845	}
		1846
		1847	REQ_SEND;
		1848	}
		1849	}
		1850
		1851	void
		1852	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1853	PPCODE:
		1854	{
		1855	dREQ;
		1856
1832	req->type = REQ_BUSY;	1857	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	1858	req->nv1 = delay < 0. ? 0. : delay;
1834		1859
1835	REQ_SEND;	1860	REQ_SEND;
1836	}	1861	}
1837		1862
1838	void	1863	void
1839	aio_group (SV *callback=&PL_sv_undef)	1864	aio_group (SV *callback = &PL_sv_undef)
1840	PROTOTYPE: ;$
1841	PPCODE:	1865	PPCODE:
1842	{	1866	{
1843	dREQ;	1867	dREQ;
1844		1868
1845	req->type = REQ_GROUP;	1869	req->type = EIO_GROUP;
1846		1870
		1871	PUTBACK;
1847	req_send (req);	1872	req_submit (req);
		1873	SPAGAIN;
		1874
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1875	XPUSHs (req_sv (req, aio_grp_stash));
1849	}	1876	}
1850		1877
1851	void	1878	void
1852	aio_nop (SV *callback=&PL_sv_undef)	1879	aio_nop (SV *callback = &PL_sv_undef)
		1880	ALIAS:
		1881	aio_nop = EIO_NOP
		1882	aio_sync = EIO_SYNC
1853	PPCODE:	1883	PPCODE:
1854	{	1884	{
1855	dREQ;	1885	dREQ;
1856		1886
1857	req->type = REQ_NOP;	1887	req->type = ix;
1858		1888
1859	REQ_SEND;	1889	REQ_SEND;
1860	}	1890	}
1861		1891
1862	int	1892	int
1863	aioreq_pri (int pri = 0)	1893	aioreq_pri (int pri = NO_INIT)
1864	PROTOTYPE: ;$
1865	CODE:	1894	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	1895	RETVAL = next_pri;
1867	if (items > 0)	1896	if (items > 0)
1868	{	1897	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	1898	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	1899	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	1900	next_pri = pri;
1872	}	1901	}
1873	OUTPUT:	1902	OUTPUT:
1874	RETVAL	1903	RETVAL
1875		1904
1876	void	1905	void
1877	aioreq_nice (int nice = 0)	1906	aioreq_nice (int nice = 0)
1878	CODE:	1907	CODE:
1879	nice = next_pri - nice;	1908	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	1909	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	1910	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	1911	next_pri = nice;
1883		1912
1884	void	1913	void
1885	flush ()	1914	flush ()
1886	PROTOTYPE:
1887	CODE:	1915	CODE:
1888	while (nreqs)	1916	while (eio_nreqs ())
1889	{	1917	{
1890	poll_wait ();	1918	poll_wait ();
1891	poll_cb ();	1919	poll_cb ();
1892	}	1920	}
1893		1921
1894	int	1922	int
1895	poll()	1923	poll ()
1896	PROTOTYPE:
1897	CODE:	1924	CODE:
1898	poll_wait ();	1925	poll_wait ();
1899	RETVAL = poll_cb ();	1926	RETVAL = poll_cb ();
1900	OUTPUT:	1927	OUTPUT:
1901	RETVAL	1928	RETVAL
1902		1929
1903	int	1930	int
1904	poll_fileno()	1931	poll_fileno ()
1905	PROTOTYPE:
1906	CODE:	1932	CODE:
1907	RETVAL = respipe [0];	1933	RETVAL = s_epipe_fd (&respipe);
1908	OUTPUT:	1934	OUTPUT:
1909	RETVAL	1935	RETVAL
1910		1936
1911	int	1937	int
1912	poll_cb(...)	1938	poll_cb (...)
1913	PROTOTYPE:	1939	PROTOTYPE:
1914	CODE:	1940	CODE:
1915	RETVAL = poll_cb ();	1941	RETVAL = poll_cb ();
1916	OUTPUT:	1942	OUTPUT:
1917	RETVAL	1943	RETVAL
1918		1944
1919	void	1945	void
1920	poll_wait()	1946	poll_wait ()
1921	PROTOTYPE:
1922	CODE:	1947	CODE:
1923	poll_wait ();	1948	poll_wait ();
1924		1949
1925	void
1926	setsig (int signum = SIGIO)
1927	PROTOTYPE: ;$
1928	CODE:
1929	{
1930	if (block_sig_level)
1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933	X_LOCK (reslock);
1934	main_tid = pthread_self ();
1935	main_sig = signum;
1936	X_UNLOCK (reslock);
1937
1938	if (main_sig && npending)
1939	pthread_kill (main_tid, main_sig);
1940	}
1941
1942	void
1943	aio_block (SV *cb)
1944	PROTOTYPE: &
1945	PPCODE:
1946	{
1947	int count;
1948
1949	block_sig ();
1950	PUSHMARK (SP);
1951	PUTBACK;
1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953	SPAGAIN;
1954	unblock_sig ();
1955
1956	if (SvTRUE (ERRSV))
1957	croak (0);
1958
1959	XSRETURN (count);
1960	}
1961
1962	int	1950	int
1963	nreqs()	1951	nreqs ()
1964	PROTOTYPE:
1965	CODE:	1952	CODE:
1966	RETVAL = nreqs;	1953	RETVAL = eio_nreqs ();
1967	OUTPUT:	1954	OUTPUT:
1968	RETVAL	1955	RETVAL
1969		1956
1970	int	1957	int
1971	nready()	1958	nready ()
1972	PROTOTYPE:
1973	CODE:	1959	CODE:
1974	RETVAL = get_nready ();	1960	RETVAL = eio_nready ();
1975	OUTPUT:	1961	OUTPUT:
1976	RETVAL	1962	RETVAL
1977		1963
1978	int	1964	int
1979	npending()	1965	npending ()
1980	PROTOTYPE:
1981	CODE:	1966	CODE:
1982	RETVAL = get_npending ();	1967	RETVAL = eio_npending ();
1983	OUTPUT:	1968	OUTPUT:
1984	RETVAL	1969	RETVAL
1985		1970
1986	int	1971	int
1987	nthreads()	1972	nthreads ()
1988	PROTOTYPE:
1989	CODE:	1973	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1974	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	1975	OUTPUT:
1994	RETVAL	1976	RETVAL
1995		1977
		1978	int
		1979	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1980	CODE:
		1981	RETVAL = posix_fadvise (fh, offset, length, advice);
		1982	OUTPUT:
		1983	RETVAL
		1984
		1985	IV
		1986	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1987	CODE:
		1988	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1989	OUTPUT:
		1990	RETVAL
		1991
		1992	void
		1993	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1994	PPCODE:
		1995	sv_clear_foreign (scalar);
		1996	{
		1997	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1998	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1999	if (addr == (void *)-1)
		2000	XSRETURN_NO;
		2001
		2002	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2003
		2004	if (!(prot & PROT_WRITE))
		2005	SvREADONLY_on (scalar);
		2006
		2007	XSRETURN_YES;
		2008	}
		2009
		2010	void
		2011	munmap (SV *scalar)
		2012	CODE:
		2013	sv_clear_foreign (scalar);
		2014
		2015	int
		2016	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2017	ALIAS:
		2018	mprotect = 1
		2019	CODE:
		2020	{
		2021	STRLEN svlen;
		2022	void *addr = SvPVbyte (scalar, svlen);
		2023	STRLEN len = SvUV (length);
		2024
		2025	if (offset < 0)
		2026	offset += svlen;
		2027
		2028	if (offset < 0 || offset > svlen)
		2029	croak ("offset outside of scalar");
		2030
		2031	if (!SvOK (length) || len + offset > svlen)
		2032	len = svlen - offset;
		2033
		2034	addr = (void *)(((intptr_t)addr) + offset);
		2035	eio_page_align (&addr, &len);
		2036
		2037	switch (ix)
		2038	{
		2039	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2040	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2041	}
		2042	}
		2043	OUTPUT:
		2044	RETVAL
		2045
		2046	int
		2047	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2048	CODE:
		2049	{
		2050	STRLEN svlen;
		2051	void *addr = SvPVbyte (scalar, svlen);
		2052	size_t len = SvUV (length);
		2053
		2054	if (offset < 0)
		2055	offset += svlen;
		2056
		2057	if (offset < 0 || offset > svlen)
		2058	croak ("offset outside of scalar");
		2059
		2060	if (!SvOK (length) || len + offset > svlen)
		2061	len = svlen - offset;
		2062
		2063	addr = (void *)(((intptr_t)addr) + offset);
		2064	eio_page_align (&addr, &len);
		2065	#if _POSIX_MEMLOCK_RANGE
		2066	RETVAL = munlock (addr, len);
		2067	#else
		2068	RETVAL = EIO_ENOSYS ();
		2069	#endif
		2070	}
		2071	OUTPUT:
		2072	RETVAL
		2073
		2074	int
		2075	munlockall ()
		2076	CODE:
		2077	#if _POSIX_MEMLOCK
		2078	munlockall ();
		2079	#else
		2080	RETVAL = EIO_ENOSYS ();
		2081	#endif
		2082	OUTPUT:
		2083	RETVAL
		2084
		2085	int
		2086	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2087	CODE:
		2088	{
		2089	#if HAVE_LINUX_SPLICE
		2090	loff_t off_in_, off_out_;
		2091	RETVAL = splice (
		2092	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2093	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2094	length, flags
		2095	);
		2096	#else
		2097	RETVAL = EIO_ENOSYS ();
		2098	#endif
		2099	}
		2100	OUTPUT:
		2101	RETVAL
		2102
		2103	int
		2104	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2105	CODE:
		2106	#if HAVE_LINUX_SPLICE
		2107	RETVAL = tee (rfh, wfh, length, flags);
		2108	#else
		2109	RETVAL = EIO_ENOSYS ();
		2110	#endif
		2111	OUTPUT:
		2112	RETVAL
		2113
		2114	int
		2115	pipesize (aio_rfd rfh, int new_size = -1)
		2116	PROTOTYPE: $;$
		2117	CODE:
		2118	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2119	if (new_size >= 0)
		2120	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2121	else
		2122	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2123	#else
		2124	errno = ENOSYS;
		2125	RETVAL = -1;
		2126	#endif
		2127	OUTPUT:
		2128	RETVAL
		2129
		2130	void
		2131	pipe2 (int flags = 0)
		2132	PROTOTYPE: ;$
		2133	PPCODE:
		2134	{
		2135	int fd[2];
		2136	int res;
		2137
		2138	if (flags)
		2139	#if HAVE_PIPE2
		2140	res = pipe2 (fd, flags);
		2141	#else
		2142	res = (errno = ENOSYS, -1);
		2143	#endif
		2144	else
		2145	res = pipe (fd);
		2146
		2147	if (!res)
		2148	{
		2149	EXTEND (SP, 2);
		2150	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2151	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2152	}
		2153	}
		2154
		2155	UV
		2156	get_fdlimit ()
		2157	CODE:
		2158	#if HAVE_RLIMITS
		2159	struct rlimit rl;
		2160	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2161	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2162	#endif
		2163	XSRETURN_UNDEF;
		2164	OUTPUT:
		2165	RETVAL
		2166
		2167	void
		2168	min_fdlimit (UV limit = 0x7fffffffU)
		2169	CODE:
		2170	{
		2171	#if HAVE_RLIMITS
		2172	struct rlimit rl;
		2173	rlim_t orig_rlim_max;
		2174	UV bit;
		2175
		2176	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2177	goto fail;
		2178
		2179	if (rl.rlim_cur == RLIM_INFINITY)
		2180	XSRETURN_YES;
		2181
		2182	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2183
		2184	if (rl.rlim_cur < limit)
		2185	{
		2186	rl.rlim_cur = limit;
		2187
		2188	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2189	rl.rlim_max = rl.rlim_cur;
		2190	}
		2191
		2192	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2193	XSRETURN_YES;
		2194
		2195	if (errno == EPERM)
		2196	{
		2197	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2198	/* our limit overflows a system-wide limit */
		2199	/* try an adaptive algorithm, but do not lower the hardlimit */
		2200	rl.rlim_max = 0;
		2201	for (bit = 0x40000000U; bit; bit >>= 1)
		2202	{
		2203	rl.rlim_max |= bit;
		2204	rl.rlim_cur = rl.rlim_max;
		2205
		2206	/* nevr decrease the hard limit */
		2207	if (rl.rlim_max < orig_rlim_max)
		2208	break;
		2209
		2210	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2211	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2212	}
		2213
		2214	/* now, raise the soft limit to the max permitted */
		2215	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2216	{
		2217	rl.rlim_cur = rl.rlim_max;
		2218	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2219	errno = EPERM;
		2220	}
		2221	}
		2222	#endif
		2223	fail:
		2224	XSRETURN_UNDEF;
		2225	}
		2226
		2227	void _on_next_submit (SV *cb)
		2228	CODE:
		2229	SvREFCNT_dec (on_next_submit);
		2230	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2231
1996	PROTOTYPES: DISABLE	2232	PROTOTYPES: DISABLE
		2233
		2234	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2235
		2236	BOOT:
		2237	{
		2238	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2239	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2240	}
		2241
		2242	void
		2243	DESTROY (SV *self)
		2244	CODE:
		2245	{
		2246	aio_wd wd = SvAIO_WD (self);
		2247	#if HAVE_AT
		2248	{
		2249	SV *callback = &PL_sv_undef;
		2250	dREQ; /* clobbers next_pri :/ */
		2251	next_pri = req->pri; /* restore next_pri */
		2252	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2253	req->type = EIO_WD_CLOSE;
		2254	req->wd = wd;
		2255	REQ_SEND;
		2256	}
		2257	#else
		2258	eio_wd_close_sync (wd);
		2259	#endif
		2260	}
1997		2261
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2262	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		2263
2000	void	2264	void
2001	cancel (aio_req_ornot req)	2265	cancel (aio_req_ornot req)
2002	CODE:	2266	CODE:
2003	req_cancel (req);	2267	eio_cancel (req);
2004		2268
2005	void	2269	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2270	cb (aio_req_ornot req, SV *callback = NO_INIT)
2007	CODE:	2271	PPCODE:
		2272	{
		2273	if (GIMME_V != G_VOID)
		2274	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2275
		2276	if (items > 1)
		2277	{
		2278	SV *cb_cv = get_cb (callback);
		2279
2008	SvREFCNT_dec (req->callback);	2280	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	2281	req->callback = SvREFCNT_inc (cb_cv);
		2282	}
		2283	}
2010		2284
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2285	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		2286
2013	void	2287	void
2014	add (aio_req grp, ...)	2288	add (aio_req grp, ...)
2015	PPCODE:	2289	PPCODE:
2016	{	2290	{
2017	int i;	2291	int i;
2018	aio_req req;
2019
2020	if (main_sig && !block_sig_level)
2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022		2292
2023	if (grp->int1 == 2)	2293	if (grp->int1 == 2)
2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2294	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025		2295
2026	for (i = 1; i < items; ++i )	2296	for (i = 1; i < items; ++i )
2027	{	2297	{
		2298	aio_req req;
		2299
2028	if (GIMME_V != G_VOID)	2300	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2301	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		2302
2031	req = SvAIO_REQ (ST (i));	2303	req = SvAIO_REQ (ST (i));
2032		2304
2033	if (req)	2305	if (req)
2034	{	2306	eio_grp_add (grp, req);
2035	++grp->size;
2036	req->grp = grp;
2037
2038	req->grp_prev = 0;
2039	req->grp_next = grp->grp_first;
2040
2041	if (grp->grp_first)
2042	grp->grp_first->grp_prev = req;
2043
2044	grp->grp_first = req;
2045	}
2046	}	2307	}
2047	}	2308	}
2048		2309
2049	void	2310	void
2050	cancel_subs (aio_req_ornot req)	2311	cancel_subs (aio_req_ornot req)
…		…
2059	AV *av;	2320	AV *av;
2060		2321
2061	grp->errorno = errno;	2322	grp->errorno = errno;
2062		2323
2063	av = newAV ();	2324	av = newAV ();
		2325	av_extend (av, items - 1);
2064		2326
2065	for (i = 1; i < items; ++i )	2327	for (i = 1; i < items; ++i )
2066	av_push (av, newSVsv (ST (i)));	2328	av_push (av, newSVsv (ST (i)));
2067		2329
2068	SvREFCNT_dec (grp->sv1);	2330	SvREFCNT_dec (grp->sv1);
…		…
2075	grp->errorno = errorno;	2337	grp->errorno = errorno;
2076		2338
2077	void	2339	void
2078	limit (aio_req grp, int limit)	2340	limit (aio_req grp, int limit)
2079	CODE:	2341	CODE:
2080	grp->int2 = limit;	2342	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		2343
2083	void	2344	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	2345	feed (aio_req grp, SV *callback = &PL_sv_undef)
2085	CODE:	2346	CODE:
2086	{	2347	{
2087	SvREFCNT_dec (grp->sv2);	2348	SvREFCNT_dec (grp->sv2);
2088	grp->sv2 = newSVsv (callback);	2349	grp->sv2 = newSVsv (callback);
		2350	grp->feed = aio_grp_feed;
2089		2351
2090	if (grp->int2 <= 0)	2352	if (grp->int2 <= 0)
2091	grp->int2 = 2;	2353	grp->int2 = 2;
2092		2354
2093	aio_grp_feed (grp);	2355	eio_grp_limit (grp, grp->int2);
2094	}	2356	}
2095		2357

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines