… | |
… | |
40 | #ifndef _WIN32 |
40 | #ifndef _WIN32 |
41 | # include "config.h" |
41 | # include "config.h" |
42 | #endif |
42 | #endif |
43 | |
43 | |
44 | #include "eio.h" |
44 | #include "eio.h" |
|
|
45 | #include "ecb.h" |
45 | |
46 | |
46 | #ifdef EIO_STACKSIZE |
47 | #ifdef EIO_STACKSIZE |
47 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
48 | #endif |
49 | #endif |
49 | #include "xthread.h" |
50 | #include "xthread.h" |
… | |
… | |
53 | #include <stdlib.h> |
54 | #include <stdlib.h> |
54 | #include <string.h> |
55 | #include <string.h> |
55 | #include <errno.h> |
56 | #include <errno.h> |
56 | #include <sys/types.h> |
57 | #include <sys/types.h> |
57 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
58 | #include <sys/statvfs.h> |
|
|
59 | #include <limits.h> |
59 | #include <limits.h> |
60 | #include <fcntl.h> |
60 | #include <fcntl.h> |
61 | #include <assert.h> |
61 | #include <assert.h> |
62 | |
62 | |
63 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
63 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
64 | /* intptr_t only comes form stdint.h, says idiot openbsd coder */ |
64 | /* intptr_t only comes from stdint.h, says idiot openbsd coder */ |
65 | #if HAVE_STDINT_H |
65 | #if HAVE_STDINT_H |
66 | # include <stdint.h> |
66 | # include <stdint.h> |
67 | #endif |
67 | #endif |
68 | |
68 | |
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|
69 | #ifndef ECANCELED |
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|
70 | # define ECANCELED EDOM |
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71 | #endif |
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72 | |
|
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73 | static void eio_destroy (eio_req *req); |
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74 | |
69 | #ifndef EIO_FINISH |
75 | #ifndef EIO_FINISH |
70 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
76 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
71 | #endif |
77 | #endif |
72 | |
78 | |
73 | #ifndef EIO_DESTROY |
79 | #ifndef EIO_DESTROY |
… | |
… | |
76 | |
82 | |
77 | #ifndef EIO_FEED |
83 | #ifndef EIO_FEED |
78 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
84 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
79 | #endif |
85 | #endif |
80 | |
86 | |
|
|
87 | #ifndef EIO_FD_TO_WIN32_HANDLE |
|
|
88 | # define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
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89 | #endif |
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90 | #ifndef EIO_WIN32_HANDLE_TO_FD |
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91 | # define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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92 | #endif |
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93 | |
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94 | #define EIO_ERRNO(errval,retval) ((errno = errval), retval) |
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95 | |
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96 | #define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1) |
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97 | |
81 | #ifdef _WIN32 |
98 | #ifdef _WIN32 |
82 | |
99 | |
83 | /*doh*/ |
100 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
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101 | |
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102 | #ifdef EIO_STRUCT_STATI64 |
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103 | #define stat(path,buf) _stati64 (path,buf) |
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104 | #define fstat(fd,buf) _fstati64 (path,buf) |
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105 | #endif |
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106 | #define lstat(path,buf) stat (path,buf) |
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107 | #define fsync(fd) (FlushFileBuffers (EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
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108 | #define mkdir(path,mode) _mkdir (path) |
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109 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
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110 | |
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111 | #define chown(path,uid,gid) EIO_ENOSYS () |
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112 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
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113 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
|
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114 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
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115 | #define mknod(path,mode,dev) EIO_ENOSYS () |
|
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116 | #define sync() EIO_ENOSYS () |
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117 | |
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118 | /* we could even stat and see if it exists */ |
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119 | static int |
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120 | symlink (const char *old, const char *neu) |
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121 | { |
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122 | if (CreateSymbolicLink (neu, old, 1)) |
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123 | return 0; |
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124 | |
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125 | if (CreateSymbolicLink (neu, old, 0)) |
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126 | return 0; |
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127 | |
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128 | return EIO_ERRNO (ENOENT, -1); |
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129 | } |
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130 | |
84 | #else |
131 | #else |
85 | |
132 | |
86 | # include <sys/time.h> |
133 | #include <sys/time.h> |
87 | # include <sys/select.h> |
134 | #include <sys/select.h> |
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|
135 | #include <sys/statvfs.h> |
88 | # include <unistd.h> |
136 | #include <unistd.h> |
89 | # include <utime.h> |
137 | #include <utime.h> |
90 | # include <signal.h> |
138 | #include <signal.h> |
91 | # include <dirent.h> |
139 | #include <dirent.h> |
92 | |
140 | |
93 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
141 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
94 | # include <sys/mman.h> |
142 | #include <sys/mman.h> |
95 | #endif |
143 | #endif |
96 | |
144 | |
97 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
145 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
98 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
146 | #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
99 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
147 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
100 | # define D_INO(de) (de)->d_fileno |
148 | #define D_INO(de) (de)->d_fileno |
101 | # define D_NAMLEN(de) (de)->d_namlen |
149 | #define D_NAMLEN(de) (de)->d_namlen |
102 | # elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
150 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
103 | # define D_INO(de) (de)->d_ino |
151 | #define D_INO(de) (de)->d_ino |
104 | # endif |
152 | #endif |
105 | |
153 | |
106 | #ifdef _D_EXACT_NAMLEN |
154 | #ifdef _D_EXACT_NAMLEN |
107 | # undef D_NAMLEN |
155 | #undef D_NAMLEN |
108 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
156 | #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
109 | #endif |
157 | #endif |
110 | |
158 | |
111 | # ifdef _DIRENT_HAVE_D_TYPE |
159 | #ifdef _DIRENT_HAVE_D_TYPE |
112 | # define D_TYPE(de) (de)->d_type |
160 | #define D_TYPE(de) (de)->d_type |
113 | # endif |
161 | #endif |
114 | |
162 | |
115 | # ifndef EIO_STRUCT_DIRENT |
163 | #ifndef EIO_STRUCT_DIRENT |
116 | # define EIO_STRUCT_DIRENT struct dirent |
164 | #define EIO_STRUCT_DIRENT struct dirent |
117 | # endif |
165 | #endif |
118 | |
166 | |
119 | #endif |
167 | #endif |
120 | |
168 | |
121 | #if HAVE_SENDFILE |
169 | #if HAVE_SENDFILE |
122 | # if __linux |
170 | # if __linux |
… | |
… | |
165 | if (!eio_buf) \ |
213 | if (!eio_buf) \ |
166 | return -1; |
214 | return -1; |
167 | |
215 | |
168 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
216 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
169 | |
217 | |
170 | /*****************************************************************************/ |
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171 | |
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172 | #if __GNUC__ >= 3 |
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173 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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174 | #else |
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175 | # define expect(expr,value) (expr) |
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176 | #endif |
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177 | |
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178 | #define expect_false(expr) expect ((expr) != 0, 0) |
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179 | #define expect_true(expr) expect ((expr) != 0, 1) |
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180 | |
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181 | /*****************************************************************************/ |
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182 | |
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183 | #define ETP_PRI_MIN EIO_PRI_MIN |
218 | #define ETP_PRI_MIN EIO_PRI_MIN |
184 | #define ETP_PRI_MAX EIO_PRI_MAX |
219 | #define ETP_PRI_MAX EIO_PRI_MAX |
185 | |
220 | |
186 | struct etp_worker; |
221 | struct etp_worker; |
187 | |
222 | |
… | |
… | |
212 | /*****************************************************************************/ |
247 | /*****************************************************************************/ |
213 | |
248 | |
214 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
249 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
215 | |
250 | |
216 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
251 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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|
252 | ecb_inline int |
217 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
253 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
218 | { |
254 | { |
219 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
255 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
220 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
256 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
221 | } |
257 | } |
222 | |
258 | |
… | |
… | |
266 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
302 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
267 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
303 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
268 | |
304 | |
269 | /* worker threads management */ |
305 | /* worker threads management */ |
270 | |
306 | |
|
|
307 | static void ecb_cold |
271 | static void etp_worker_clear (etp_worker *wrk) |
308 | etp_worker_clear (etp_worker *wrk) |
272 | { |
309 | { |
273 | ETP_WORKER_CLEAR (wrk); |
310 | ETP_WORKER_CLEAR (wrk); |
274 | } |
311 | } |
275 | |
312 | |
|
|
313 | static void ecb_cold |
276 | static void etp_worker_free (etp_worker *wrk) |
314 | etp_worker_free (etp_worker *wrk) |
277 | { |
315 | { |
278 | wrk->next->prev = wrk->prev; |
316 | wrk->next->prev = wrk->prev; |
279 | wrk->prev->next = wrk->next; |
317 | wrk->prev->next = wrk->next; |
280 | |
318 | |
281 | free (wrk); |
319 | free (wrk); |
282 | } |
320 | } |
283 | |
321 | |
284 | static unsigned int etp_nreqs (void) |
322 | static unsigned int |
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323 | etp_nreqs (void) |
285 | { |
324 | { |
286 | int retval; |
325 | int retval; |
287 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
326 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
288 | retval = nreqs; |
327 | retval = nreqs; |
289 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
328 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
290 | return retval; |
329 | return retval; |
291 | } |
330 | } |
292 | |
331 | |
293 | static unsigned int etp_nready (void) |
332 | static unsigned int |
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|
333 | etp_nready (void) |
294 | { |
334 | { |
295 | unsigned int retval; |
335 | unsigned int retval; |
296 | |
336 | |
297 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
337 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
298 | retval = nready; |
338 | retval = nready; |
299 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
339 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
300 | |
340 | |
301 | return retval; |
341 | return retval; |
302 | } |
342 | } |
303 | |
343 | |
304 | static unsigned int etp_npending (void) |
344 | static unsigned int |
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|
345 | etp_npending (void) |
305 | { |
346 | { |
306 | unsigned int retval; |
347 | unsigned int retval; |
307 | |
348 | |
308 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
349 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
309 | retval = npending; |
350 | retval = npending; |
310 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
351 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
311 | |
352 | |
312 | return retval; |
353 | return retval; |
313 | } |
354 | } |
314 | |
355 | |
315 | static unsigned int etp_nthreads (void) |
356 | static unsigned int |
|
|
357 | etp_nthreads (void) |
316 | { |
358 | { |
317 | unsigned int retval; |
359 | unsigned int retval; |
318 | |
360 | |
319 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
361 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
320 | retval = started; |
362 | retval = started; |
… | |
… | |
334 | } etp_reqq; |
376 | } etp_reqq; |
335 | |
377 | |
336 | static etp_reqq req_queue; |
378 | static etp_reqq req_queue; |
337 | static etp_reqq res_queue; |
379 | static etp_reqq res_queue; |
338 | |
380 | |
|
|
381 | static int ecb_noinline |
339 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
382 | reqq_push (etp_reqq *q, ETP_REQ *req) |
340 | { |
383 | { |
341 | int pri = req->pri; |
384 | int pri = req->pri; |
342 | req->next = 0; |
385 | req->next = 0; |
343 | |
386 | |
344 | if (q->qe[pri]) |
387 | if (q->qe[pri]) |
… | |
… | |
350 | q->qe[pri] = q->qs[pri] = req; |
393 | q->qe[pri] = q->qs[pri] = req; |
351 | |
394 | |
352 | return q->size++; |
395 | return q->size++; |
353 | } |
396 | } |
354 | |
397 | |
|
|
398 | static ETP_REQ * ecb_noinline |
355 | static ETP_REQ *reqq_shift (etp_reqq *q) |
399 | reqq_shift (etp_reqq *q) |
356 | { |
400 | { |
357 | int pri; |
401 | int pri; |
358 | |
402 | |
359 | if (!q->size) |
403 | if (!q->size) |
360 | return 0; |
404 | return 0; |
… | |
… | |
375 | } |
419 | } |
376 | |
420 | |
377 | abort (); |
421 | abort (); |
378 | } |
422 | } |
379 | |
423 | |
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|
424 | static void ecb_cold |
380 | static void etp_thread_init (void) |
425 | etp_thread_init (void) |
381 | { |
426 | { |
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|
427 | #if !HAVE_PREADWRITE |
|
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428 | X_MUTEX_CREATE (preadwritelock); |
|
|
429 | #endif |
382 | X_MUTEX_CREATE (wrklock); |
430 | X_MUTEX_CREATE (wrklock); |
383 | X_MUTEX_CREATE (reslock); |
431 | X_MUTEX_CREATE (reslock); |
384 | X_MUTEX_CREATE (reqlock); |
432 | X_MUTEX_CREATE (reqlock); |
385 | X_COND_CREATE (reqwait); |
433 | X_COND_CREATE (reqwait); |
386 | } |
434 | } |
387 | |
435 | |
|
|
436 | static void ecb_cold |
388 | static void etp_atfork_prepare (void) |
437 | etp_atfork_prepare (void) |
389 | { |
438 | { |
390 | X_LOCK (wrklock); |
|
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391 | X_LOCK (reqlock); |
|
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392 | X_LOCK (reslock); |
|
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393 | #if !HAVE_PREADWRITE |
|
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394 | X_LOCK (preadwritelock); |
|
|
395 | #endif |
|
|
396 | } |
439 | } |
397 | |
440 | |
|
|
441 | static void ecb_cold |
398 | static void etp_atfork_parent (void) |
442 | etp_atfork_parent (void) |
399 | { |
443 | { |
400 | #if !HAVE_PREADWRITE |
|
|
401 | X_UNLOCK (preadwritelock); |
|
|
402 | #endif |
|
|
403 | X_UNLOCK (reslock); |
|
|
404 | X_UNLOCK (reqlock); |
|
|
405 | X_UNLOCK (wrklock); |
|
|
406 | } |
444 | } |
407 | |
445 | |
|
|
446 | static void ecb_cold |
408 | static void etp_atfork_child (void) |
447 | etp_atfork_child (void) |
409 | { |
448 | { |
410 | ETP_REQ *prv; |
449 | ETP_REQ *prv; |
411 | |
450 | |
412 | while ((prv = reqq_shift (&req_queue))) |
451 | while ((prv = reqq_shift (&req_queue))) |
413 | ETP_DESTROY (prv); |
452 | ETP_DESTROY (prv); |
… | |
… | |
433 | npending = 0; |
472 | npending = 0; |
434 | |
473 | |
435 | etp_thread_init (); |
474 | etp_thread_init (); |
436 | } |
475 | } |
437 | |
476 | |
438 | static void |
477 | static void ecb_cold |
439 | etp_once_init (void) |
478 | etp_once_init (void) |
440 | { |
479 | { |
441 | etp_thread_init (); |
480 | etp_thread_init (); |
442 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
481 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
443 | } |
482 | } |
444 | |
483 | |
445 | static int |
484 | static int ecb_cold |
446 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
485 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
447 | { |
486 | { |
448 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
487 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
449 | |
488 | |
450 | pthread_once (&doinit, etp_once_init); |
489 | pthread_once (&doinit, etp_once_init); |
… | |
… | |
455 | return 0; |
494 | return 0; |
456 | } |
495 | } |
457 | |
496 | |
458 | X_THREAD_PROC (etp_proc); |
497 | X_THREAD_PROC (etp_proc); |
459 | |
498 | |
|
|
499 | static void ecb_cold |
460 | static void etp_start_thread (void) |
500 | etp_start_thread (void) |
461 | { |
501 | { |
462 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
502 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
463 | |
503 | |
464 | /*TODO*/ |
504 | /*TODO*/ |
465 | assert (("unable to allocate worker thread data", wrk)); |
505 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
478 | free (wrk); |
518 | free (wrk); |
479 | |
519 | |
480 | X_UNLOCK (wrklock); |
520 | X_UNLOCK (wrklock); |
481 | } |
521 | } |
482 | |
522 | |
|
|
523 | static void |
483 | static void etp_maybe_start_thread (void) |
524 | etp_maybe_start_thread (void) |
484 | { |
525 | { |
485 | if (expect_true (etp_nthreads () >= wanted)) |
526 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
486 | return; |
527 | return; |
487 | |
528 | |
488 | /* todo: maybe use idle here, but might be less exact */ |
529 | /* todo: maybe use idle here, but might be less exact */ |
489 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
530 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
490 | return; |
531 | return; |
491 | |
532 | |
492 | etp_start_thread (); |
533 | etp_start_thread (); |
493 | } |
534 | } |
494 | |
535 | |
|
|
536 | static void ecb_cold |
495 | static void etp_end_thread (void) |
537 | etp_end_thread (void) |
496 | { |
538 | { |
497 | eio_req *req = calloc (1, sizeof (eio_req)); |
539 | eio_req *req = calloc (1, sizeof (eio_req)); |
498 | |
540 | |
499 | req->type = -1; |
541 | req->type = -1; |
500 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
542 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
507 | X_LOCK (wrklock); |
549 | X_LOCK (wrklock); |
508 | --started; |
550 | --started; |
509 | X_UNLOCK (wrklock); |
551 | X_UNLOCK (wrklock); |
510 | } |
552 | } |
511 | |
553 | |
512 | static int etp_poll (void) |
554 | static int |
|
|
555 | etp_poll (void) |
513 | { |
556 | { |
514 | unsigned int maxreqs; |
557 | unsigned int maxreqs; |
515 | unsigned int maxtime; |
558 | unsigned int maxtime; |
516 | struct timeval tv_start, tv_now; |
559 | struct timeval tv_start, tv_now; |
517 | |
560 | |
… | |
… | |
547 | |
590 | |
548 | X_LOCK (reqlock); |
591 | X_LOCK (reqlock); |
549 | --nreqs; |
592 | --nreqs; |
550 | X_UNLOCK (reqlock); |
593 | X_UNLOCK (reqlock); |
551 | |
594 | |
552 | if (expect_false (req->type == EIO_GROUP && req->size)) |
595 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
553 | { |
596 | { |
554 | req->int1 = 1; /* mark request as delayed */ |
597 | req->int1 = 1; /* mark request as delayed */ |
555 | continue; |
598 | continue; |
556 | } |
599 | } |
557 | else |
600 | else |
558 | { |
601 | { |
559 | int res = ETP_FINISH (req); |
602 | int res = ETP_FINISH (req); |
560 | if (expect_false (res)) |
603 | if (ecb_expect_false (res)) |
561 | return res; |
604 | return res; |
562 | } |
605 | } |
563 | |
606 | |
564 | if (expect_false (maxreqs && !--maxreqs)) |
607 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
565 | break; |
608 | break; |
566 | |
609 | |
567 | if (maxtime) |
610 | if (maxtime) |
568 | { |
611 | { |
569 | gettimeofday (&tv_now, 0); |
612 | gettimeofday (&tv_now, 0); |
… | |
… | |
575 | |
618 | |
576 | errno = EAGAIN; |
619 | errno = EAGAIN; |
577 | return -1; |
620 | return -1; |
578 | } |
621 | } |
579 | |
622 | |
|
|
623 | static void |
580 | static void etp_cancel (ETP_REQ *req) |
624 | etp_cancel (ETP_REQ *req) |
581 | { |
625 | { |
582 | X_LOCK (wrklock); |
626 | req->cancelled = 1; |
583 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
584 | X_UNLOCK (wrklock); |
|
|
585 | |
627 | |
586 | eio_grp_cancel (req); |
628 | eio_grp_cancel (req); |
587 | } |
629 | } |
588 | |
630 | |
|
|
631 | static void |
589 | static void etp_submit (ETP_REQ *req) |
632 | etp_submit (ETP_REQ *req) |
590 | { |
633 | { |
591 | req->pri -= ETP_PRI_MIN; |
634 | req->pri -= ETP_PRI_MIN; |
592 | |
635 | |
593 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
636 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
594 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
637 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
595 | |
638 | |
596 | if (expect_false (req->type == EIO_GROUP)) |
639 | if (ecb_expect_false (req->type == EIO_GROUP)) |
597 | { |
640 | { |
598 | /* I hope this is worth it :/ */ |
641 | /* I hope this is worth it :/ */ |
599 | X_LOCK (reqlock); |
642 | X_LOCK (reqlock); |
600 | ++nreqs; |
643 | ++nreqs; |
601 | X_UNLOCK (reqlock); |
644 | X_UNLOCK (reqlock); |
… | |
… | |
620 | |
663 | |
621 | etp_maybe_start_thread (); |
664 | etp_maybe_start_thread (); |
622 | } |
665 | } |
623 | } |
666 | } |
624 | |
667 | |
|
|
668 | static void ecb_cold |
625 | static void etp_set_max_poll_time (double nseconds) |
669 | etp_set_max_poll_time (double nseconds) |
626 | { |
670 | { |
627 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
671 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
628 | max_poll_time = nseconds * EIO_TICKS; |
672 | max_poll_time = nseconds * EIO_TICKS; |
629 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
673 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
630 | } |
674 | } |
631 | |
675 | |
|
|
676 | static void ecb_cold |
632 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
677 | etp_set_max_poll_reqs (unsigned int maxreqs) |
633 | { |
678 | { |
634 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
679 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
635 | max_poll_reqs = maxreqs; |
680 | max_poll_reqs = maxreqs; |
636 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
681 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
637 | } |
682 | } |
638 | |
683 | |
|
|
684 | static void ecb_cold |
639 | static void etp_set_max_idle (unsigned int nthreads) |
685 | etp_set_max_idle (unsigned int nthreads) |
640 | { |
686 | { |
641 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
687 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
642 | max_idle = nthreads; |
688 | max_idle = nthreads; |
643 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
689 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
644 | } |
690 | } |
645 | |
691 | |
|
|
692 | static void ecb_cold |
646 | static void etp_set_idle_timeout (unsigned int seconds) |
693 | etp_set_idle_timeout (unsigned int seconds) |
647 | { |
694 | { |
648 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
695 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
649 | idle_timeout = seconds; |
696 | idle_timeout = seconds; |
650 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
697 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
651 | } |
698 | } |
652 | |
699 | |
|
|
700 | static void ecb_cold |
653 | static void etp_set_min_parallel (unsigned int nthreads) |
701 | etp_set_min_parallel (unsigned int nthreads) |
654 | { |
702 | { |
655 | if (wanted < nthreads) |
703 | if (wanted < nthreads) |
656 | wanted = nthreads; |
704 | wanted = nthreads; |
657 | } |
705 | } |
658 | |
706 | |
|
|
707 | static void ecb_cold |
659 | static void etp_set_max_parallel (unsigned int nthreads) |
708 | etp_set_max_parallel (unsigned int nthreads) |
660 | { |
709 | { |
661 | if (wanted > nthreads) |
710 | if (wanted > nthreads) |
662 | wanted = nthreads; |
711 | wanted = nthreads; |
663 | |
712 | |
664 | while (started > wanted) |
713 | while (started > wanted) |
665 | etp_end_thread (); |
714 | etp_end_thread (); |
666 | } |
715 | } |
667 | |
716 | |
668 | /*****************************************************************************/ |
717 | /*****************************************************************************/ |
669 | |
718 | |
|
|
719 | static void |
670 | static void grp_try_feed (eio_req *grp) |
720 | grp_try_feed (eio_req *grp) |
671 | { |
721 | { |
672 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
722 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
673 | { |
723 | { |
674 | grp->flags &= ~EIO_FLAG_GROUPADD; |
724 | grp->flags &= ~EIO_FLAG_GROUPADD; |
675 | |
725 | |
… | |
… | |
682 | break; |
732 | break; |
683 | } |
733 | } |
684 | } |
734 | } |
685 | } |
735 | } |
686 | |
736 | |
|
|
737 | static int |
687 | static int grp_dec (eio_req *grp) |
738 | grp_dec (eio_req *grp) |
688 | { |
739 | { |
689 | --grp->size; |
740 | --grp->size; |
690 | |
741 | |
691 | /* call feeder, if applicable */ |
742 | /* call feeder, if applicable */ |
692 | grp_try_feed (grp); |
743 | grp_try_feed (grp); |
… | |
… | |
696 | return eio_finish (grp); |
747 | return eio_finish (grp); |
697 | else |
748 | else |
698 | return 0; |
749 | return 0; |
699 | } |
750 | } |
700 | |
751 | |
|
|
752 | static void |
701 | void eio_destroy (eio_req *req) |
753 | eio_destroy (eio_req *req) |
702 | { |
754 | { |
703 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
755 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
704 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
756 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
705 | |
757 | |
706 | EIO_DESTROY (req); |
758 | EIO_DESTROY (req); |
707 | } |
759 | } |
708 | |
760 | |
|
|
761 | static int |
709 | static int eio_finish (eio_req *req) |
762 | eio_finish (eio_req *req) |
710 | { |
763 | { |
711 | int res = EIO_FINISH (req); |
764 | int res = EIO_FINISH (req); |
712 | |
765 | |
713 | if (req->grp) |
766 | if (req->grp) |
714 | { |
767 | { |
… | |
… | |
722 | if (grp->grp_first == req) |
775 | if (grp->grp_first == req) |
723 | grp->grp_first = req->grp_next; |
776 | grp->grp_first = req->grp_next; |
724 | |
777 | |
725 | res2 = grp_dec (grp); |
778 | res2 = grp_dec (grp); |
726 | |
779 | |
727 | if (!res && res2) |
780 | if (!res) |
728 | res = res2; |
781 | res = res2; |
729 | } |
782 | } |
730 | |
783 | |
731 | eio_destroy (req); |
784 | eio_destroy (req); |
732 | |
785 | |
733 | return res; |
786 | return res; |
734 | } |
787 | } |
735 | |
788 | |
|
|
789 | void |
736 | void eio_grp_cancel (eio_req *grp) |
790 | eio_grp_cancel (eio_req *grp) |
737 | { |
791 | { |
738 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
792 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
739 | eio_cancel (grp); |
793 | eio_cancel (grp); |
740 | } |
794 | } |
741 | |
795 | |
|
|
796 | void |
742 | void eio_cancel (eio_req *req) |
797 | eio_cancel (eio_req *req) |
743 | { |
798 | { |
744 | etp_cancel (req); |
799 | etp_cancel (req); |
745 | } |
800 | } |
746 | |
801 | |
|
|
802 | void |
747 | void eio_submit (eio_req *req) |
803 | eio_submit (eio_req *req) |
748 | { |
804 | { |
749 | etp_submit (req); |
805 | etp_submit (req); |
750 | } |
806 | } |
751 | |
807 | |
752 | unsigned int eio_nreqs (void) |
808 | unsigned int |
|
|
809 | eio_nreqs (void) |
753 | { |
810 | { |
754 | return etp_nreqs (); |
811 | return etp_nreqs (); |
755 | } |
812 | } |
756 | |
813 | |
757 | unsigned int eio_nready (void) |
814 | unsigned int |
|
|
815 | eio_nready (void) |
758 | { |
816 | { |
759 | return etp_nready (); |
817 | return etp_nready (); |
760 | } |
818 | } |
761 | |
819 | |
762 | unsigned int eio_npending (void) |
820 | unsigned int |
|
|
821 | eio_npending (void) |
763 | { |
822 | { |
764 | return etp_npending (); |
823 | return etp_npending (); |
765 | } |
824 | } |
766 | |
825 | |
767 | unsigned int eio_nthreads (void) |
826 | unsigned int ecb_cold |
|
|
827 | eio_nthreads (void) |
768 | { |
828 | { |
769 | return etp_nthreads (); |
829 | return etp_nthreads (); |
770 | } |
830 | } |
771 | |
831 | |
|
|
832 | void ecb_cold |
772 | void eio_set_max_poll_time (double nseconds) |
833 | eio_set_max_poll_time (double nseconds) |
773 | { |
834 | { |
774 | etp_set_max_poll_time (nseconds); |
835 | etp_set_max_poll_time (nseconds); |
775 | } |
836 | } |
776 | |
837 | |
|
|
838 | void ecb_cold |
777 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
839 | eio_set_max_poll_reqs (unsigned int maxreqs) |
778 | { |
840 | { |
779 | etp_set_max_poll_reqs (maxreqs); |
841 | etp_set_max_poll_reqs (maxreqs); |
780 | } |
842 | } |
781 | |
843 | |
|
|
844 | void ecb_cold |
782 | void eio_set_max_idle (unsigned int nthreads) |
845 | eio_set_max_idle (unsigned int nthreads) |
783 | { |
846 | { |
784 | etp_set_max_idle (nthreads); |
847 | etp_set_max_idle (nthreads); |
785 | } |
848 | } |
786 | |
849 | |
|
|
850 | void ecb_cold |
787 | void eio_set_idle_timeout (unsigned int seconds) |
851 | eio_set_idle_timeout (unsigned int seconds) |
788 | { |
852 | { |
789 | etp_set_idle_timeout (seconds); |
853 | etp_set_idle_timeout (seconds); |
790 | } |
854 | } |
791 | |
855 | |
|
|
856 | void ecb_cold |
792 | void eio_set_min_parallel (unsigned int nthreads) |
857 | eio_set_min_parallel (unsigned int nthreads) |
793 | { |
858 | { |
794 | etp_set_min_parallel (nthreads); |
859 | etp_set_min_parallel (nthreads); |
795 | } |
860 | } |
796 | |
861 | |
|
|
862 | void ecb_cold |
797 | void eio_set_max_parallel (unsigned int nthreads) |
863 | eio_set_max_parallel (unsigned int nthreads) |
798 | { |
864 | { |
799 | etp_set_max_parallel (nthreads); |
865 | etp_set_max_parallel (nthreads); |
800 | } |
866 | } |
801 | |
867 | |
802 | int eio_poll (void) |
868 | int eio_poll (void) |
… | |
… | |
811 | # undef pread |
877 | # undef pread |
812 | # undef pwrite |
878 | # undef pwrite |
813 | # define pread eio__pread |
879 | # define pread eio__pread |
814 | # define pwrite eio__pwrite |
880 | # define pwrite eio__pwrite |
815 | |
881 | |
816 | static ssize_t |
882 | static eio_ssize_t |
817 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
883 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
818 | { |
884 | { |
819 | ssize_t res; |
885 | eio_ssize_t res; |
820 | off_t ooffset; |
886 | off_t ooffset; |
821 | |
887 | |
822 | X_LOCK (preadwritelock); |
888 | X_LOCK (preadwritelock); |
823 | ooffset = lseek (fd, 0, SEEK_CUR); |
889 | ooffset = lseek (fd, 0, SEEK_CUR); |
824 | lseek (fd, offset, SEEK_SET); |
890 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
827 | X_UNLOCK (preadwritelock); |
893 | X_UNLOCK (preadwritelock); |
828 | |
894 | |
829 | return res; |
895 | return res; |
830 | } |
896 | } |
831 | |
897 | |
832 | static ssize_t |
898 | static eio_ssize_t |
833 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
899 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
834 | { |
900 | { |
835 | ssize_t res; |
901 | eio_ssize_t res; |
836 | off_t ooffset; |
902 | off_t ooffset; |
837 | |
903 | |
838 | X_LOCK (preadwritelock); |
904 | X_LOCK (preadwritelock); |
839 | ooffset = lseek (fd, 0, SEEK_CUR); |
905 | ooffset = lseek (fd, 0, SEEK_CUR); |
840 | lseek (fd, offset, SEEK_SET); |
906 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
872 | #ifndef HAVE_FUTIMES |
938 | #ifndef HAVE_FUTIMES |
873 | |
939 | |
874 | # undef futimes |
940 | # undef futimes |
875 | # define futimes(fd,times) eio__futimes (fd, times) |
941 | # define futimes(fd,times) eio__futimes (fd, times) |
876 | |
942 | |
|
|
943 | static int |
877 | static int eio__futimes (int fd, const struct timeval tv[2]) |
944 | eio__futimes (int fd, const struct timeval tv[2]) |
878 | { |
945 | { |
879 | errno = ENOSYS; |
946 | errno = ENOSYS; |
880 | return -1; |
947 | return -1; |
881 | } |
948 | } |
882 | |
949 | |
… | |
… | |
886 | # undef fdatasync |
953 | # undef fdatasync |
887 | # define fdatasync(fd) fsync (fd) |
954 | # define fdatasync(fd) fsync (fd) |
888 | #endif |
955 | #endif |
889 | |
956 | |
890 | /* sync_file_range always needs emulation */ |
957 | /* sync_file_range always needs emulation */ |
891 | int |
958 | static int |
892 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
959 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
893 | { |
960 | { |
894 | #if HAVE_SYNC_FILE_RANGE |
961 | #if HAVE_SYNC_FILE_RANGE |
895 | int res; |
962 | int res; |
896 | |
963 | |
… | |
… | |
913 | /* even though we could play tricks with the flags, it's better to always |
980 | /* even though we could play tricks with the flags, it's better to always |
914 | * call fdatasync, as that matches the expectation of its users best */ |
981 | * call fdatasync, as that matches the expectation of its users best */ |
915 | return fdatasync (fd); |
982 | return fdatasync (fd); |
916 | } |
983 | } |
917 | |
984 | |
|
|
985 | static int |
|
|
986 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
987 | { |
|
|
988 | #if HAVE_FALLOCATE |
|
|
989 | return fallocate (fd, mode, offset, len); |
|
|
990 | #else |
|
|
991 | errno = ENOSYS; |
|
|
992 | return -1; |
|
|
993 | #endif |
|
|
994 | } |
|
|
995 | |
918 | #if !HAVE_READAHEAD |
996 | #if !HAVE_READAHEAD |
919 | # undef readahead |
997 | # undef readahead |
920 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
998 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
921 | |
999 | |
922 | static ssize_t |
1000 | static eio_ssize_t |
923 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
1001 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
924 | { |
1002 | { |
925 | size_t todo = count; |
1003 | size_t todo = count; |
926 | dBUF; |
1004 | dBUF; |
927 | |
1005 | |
… | |
… | |
939 | } |
1017 | } |
940 | |
1018 | |
941 | #endif |
1019 | #endif |
942 | |
1020 | |
943 | /* sendfile always needs emulation */ |
1021 | /* sendfile always needs emulation */ |
944 | static ssize_t |
1022 | static eio_ssize_t |
945 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
1023 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
946 | { |
1024 | { |
|
|
1025 | eio_ssize_t written = 0; |
947 | ssize_t res; |
1026 | eio_ssize_t res; |
948 | |
1027 | |
949 | if (!count) |
1028 | if (!count) |
950 | return 0; |
1029 | return 0; |
951 | |
1030 | |
|
|
1031 | for (;;) |
|
|
1032 | { |
|
|
1033 | #ifdef __APPLE__ |
|
|
1034 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
1035 | #endif |
952 | #if HAVE_SENDFILE |
1036 | #if HAVE_SENDFILE |
953 | # if __linux |
1037 | # if __linux |
|
|
1038 | off_t soffset = offset; |
954 | res = sendfile (ofd, ifd, &offset, count); |
1039 | res = sendfile (ofd, ifd, &soffset, count); |
955 | |
1040 | |
956 | # elif __FreeBSD__ |
1041 | # elif __FreeBSD__ |
957 | /* |
1042 | /* |
958 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
1043 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
959 | * wasted on making it similar to other I/O functions. |
1044 | * wasted on making it similar to other I/O functions. |
960 | */ |
1045 | */ |
961 | { |
|
|
962 | off_t sbytes; |
1046 | off_t sbytes; |
963 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
1047 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
964 | |
1048 | |
965 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
1049 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
966 | /* freebsd' sendfile will return 0 on success */ |
1050 | /* freebsd' sendfile will return 0 on success */ |
967 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
1051 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
968 | /* not on e.g. EIO or EPIPE - sounds broken */ |
1052 | /* not on e.g. EIO or EPIPE - sounds broken */ |
969 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
1053 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
970 | res = sbytes; |
1054 | res = sbytes; |
971 | #endif |
1055 | #endif |
972 | |
1056 | |
973 | /* according to source inspection, this is correct, and useful behaviour */ |
1057 | /* according to source inspection, this is correct, and useful behaviour */ |
974 | if (sbytes) |
1058 | if (sbytes) |
975 | res = sbytes; |
1059 | res = sbytes; |
976 | } |
|
|
977 | |
1060 | |
978 | # elif defined (__APPLE__) |
1061 | # elif defined (__APPLE__) |
979 | |
|
|
980 | { |
|
|
981 | off_t sbytes = count; |
1062 | off_t sbytes = count; |
982 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
1063 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
983 | |
1064 | |
984 | /* according to the manpage, sbytes is always valid */ |
1065 | /* according to the manpage, sbytes is always valid */ |
985 | if (sbytes) |
1066 | if (sbytes) |
986 | res = sbytes; |
1067 | res = sbytes; |
987 | } |
|
|
988 | |
1068 | |
989 | # elif __hpux |
1069 | # elif __hpux |
990 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1070 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
991 | |
1071 | |
992 | # elif __solaris |
1072 | # elif __solaris |
993 | { |
|
|
994 | struct sendfilevec vec; |
1073 | struct sendfilevec vec; |
995 | size_t sbytes; |
1074 | size_t sbytes; |
996 | |
1075 | |
997 | vec.sfv_fd = ifd; |
1076 | vec.sfv_fd = ifd; |
998 | vec.sfv_flag = 0; |
1077 | vec.sfv_flag = 0; |
999 | vec.sfv_off = offset; |
1078 | vec.sfv_off = offset; |
1000 | vec.sfv_len = count; |
1079 | vec.sfv_len = count; |
1001 | |
1080 | |
1002 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1081 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1003 | |
1082 | |
1004 | if (res < 0 && sbytes) |
1083 | if (res < 0 && sbytes) |
1005 | res = sbytes; |
1084 | res = sbytes; |
1006 | } |
|
|
1007 | |
1085 | |
1008 | # endif |
1086 | # endif |
1009 | |
1087 | |
1010 | #elif defined (_WIN32) |
1088 | #elif defined (_WIN32) && 0 |
1011 | |
|
|
1012 | /* does not work, just for documentation of what would need to be done */ |
1089 | /* does not work, just for documentation of what would need to be done */ |
1013 | { |
1090 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1091 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1092 | /* has no way to get an independent handle to the same file description */ |
1014 | HANDLE h = TO_SOCKET (ifd); |
1093 | HANDLE h = TO_SOCKET (ifd); |
1015 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
1094 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
1016 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
1095 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
1017 | } |
|
|
1018 | |
1096 | |
1019 | #else |
1097 | #else |
1020 | res = -1; |
1098 | res = -1; |
1021 | errno = ENOSYS; |
1099 | errno = ENOSYS; |
1022 | #endif |
1100 | #endif |
1023 | |
1101 | |
|
|
1102 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1103 | if (res <= 128 * 1024 * 1024) |
|
|
1104 | { |
|
|
1105 | if (res > 0) |
|
|
1106 | written += res; |
|
|
1107 | |
|
|
1108 | if (written) |
|
|
1109 | return written; |
|
|
1110 | |
|
|
1111 | break; |
|
|
1112 | } |
|
|
1113 | else |
|
|
1114 | { |
|
|
1115 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1116 | written += res; |
|
|
1117 | offset += res; |
|
|
1118 | count -= res; |
|
|
1119 | |
|
|
1120 | if (!count) |
|
|
1121 | return written; |
|
|
1122 | } |
|
|
1123 | } |
|
|
1124 | |
1024 | if (res < 0 |
1125 | if (res < 0 |
1025 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1126 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1026 | /* BSDs */ |
1127 | /* BSDs */ |
1027 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
1128 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
1028 | || errno == ENOTSUP |
1129 | || errno == ENOTSUP |
1029 | #endif |
1130 | #endif |
… | |
… | |
1039 | |
1140 | |
1040 | res = 0; |
1141 | res = 0; |
1041 | |
1142 | |
1042 | while (count) |
1143 | while (count) |
1043 | { |
1144 | { |
1044 | ssize_t cnt; |
1145 | eio_ssize_t cnt; |
1045 | |
1146 | |
1046 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1147 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1047 | |
1148 | |
1048 | if (cnt <= 0) |
1149 | if (cnt <= 0) |
1049 | { |
1150 | { |
… | |
… | |
1064 | count -= cnt; |
1165 | count -= cnt; |
1065 | } |
1166 | } |
1066 | } |
1167 | } |
1067 | |
1168 | |
1068 | return res; |
1169 | return res; |
|
|
1170 | } |
|
|
1171 | |
|
|
1172 | #ifdef PAGESIZE |
|
|
1173 | # define eio_pagesize() PAGESIZE |
|
|
1174 | #else |
|
|
1175 | static intptr_t |
|
|
1176 | eio_pagesize (void) |
|
|
1177 | { |
|
|
1178 | static intptr_t page; |
|
|
1179 | |
|
|
1180 | if (!page) |
|
|
1181 | page = sysconf (_SC_PAGESIZE); |
|
|
1182 | |
|
|
1183 | return page; |
|
|
1184 | } |
|
|
1185 | #endif |
|
|
1186 | |
|
|
1187 | static void |
|
|
1188 | eio_page_align (void **addr, size_t *length) |
|
|
1189 | { |
|
|
1190 | intptr_t mask = eio_pagesize () - 1; |
|
|
1191 | |
|
|
1192 | /* round down addr */ |
|
|
1193 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1194 | |
|
|
1195 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1196 | *length += adj; |
|
|
1197 | |
|
|
1198 | /* round up length */ |
|
|
1199 | *length = (*length + mask) & ~mask; |
|
|
1200 | } |
|
|
1201 | |
|
|
1202 | #if !_POSIX_MEMLOCK |
|
|
1203 | # define eio__mlockall(a) EIO_ENOSYS () |
|
|
1204 | #else |
|
|
1205 | |
|
|
1206 | static int |
|
|
1207 | eio__mlockall (int flags) |
|
|
1208 | { |
|
|
1209 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1210 | extern int mallopt (int, int); |
|
|
1211 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1212 | #endif |
|
|
1213 | |
|
|
1214 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1215 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1216 | { |
|
|
1217 | flags = 0 |
|
|
1218 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1219 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1220 | } |
|
|
1221 | |
|
|
1222 | return mlockall (flags); |
|
|
1223 | } |
|
|
1224 | #endif |
|
|
1225 | |
|
|
1226 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1227 | # define eio__mlock(a,b) EIO_ENOSYS () |
|
|
1228 | #else |
|
|
1229 | |
|
|
1230 | static int |
|
|
1231 | eio__mlock (void *addr, size_t length) |
|
|
1232 | { |
|
|
1233 | eio_page_align (&addr, &length); |
|
|
1234 | |
|
|
1235 | return mlock (addr, length); |
|
|
1236 | } |
|
|
1237 | |
|
|
1238 | #endif |
|
|
1239 | |
|
|
1240 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1241 | # define eio__msync(a,b,c) EIO_ENOSYS () |
|
|
1242 | #else |
|
|
1243 | |
|
|
1244 | static int |
|
|
1245 | eio__msync (void *mem, size_t len, int flags) |
|
|
1246 | { |
|
|
1247 | eio_page_align (&mem, &len); |
|
|
1248 | |
|
|
1249 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1250 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1251 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1252 | { |
|
|
1253 | flags = 0 |
|
|
1254 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1255 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1256 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1257 | } |
|
|
1258 | |
|
|
1259 | return msync (mem, len, flags); |
|
|
1260 | } |
|
|
1261 | |
|
|
1262 | #endif |
|
|
1263 | |
|
|
1264 | static int |
|
|
1265 | eio__mtouch (eio_req *req) |
|
|
1266 | { |
|
|
1267 | void *mem = req->ptr2; |
|
|
1268 | size_t len = req->size; |
|
|
1269 | int flags = req->int1; |
|
|
1270 | |
|
|
1271 | eio_page_align (&mem, &len); |
|
|
1272 | |
|
|
1273 | { |
|
|
1274 | intptr_t addr = (intptr_t)mem; |
|
|
1275 | intptr_t end = addr + len; |
|
|
1276 | intptr_t page = eio_pagesize (); |
|
|
1277 | |
|
|
1278 | if (addr < end) |
|
|
1279 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1280 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1281 | else |
|
|
1282 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1283 | } |
|
|
1284 | |
|
|
1285 | return 0; |
|
|
1286 | } |
|
|
1287 | |
|
|
1288 | /*****************************************************************************/ |
|
|
1289 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1290 | |
|
|
1291 | static void |
|
|
1292 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1293 | { |
|
|
1294 | char *rel = req->ptr1; |
|
|
1295 | char *res; |
|
|
1296 | char *tmp1, *tmp2; |
|
|
1297 | #if SYMLOOP_MAX > 32 |
|
|
1298 | int symlinks = SYMLOOP_MAX; |
|
|
1299 | #else |
|
|
1300 | int symlinks = 32; |
|
|
1301 | #endif |
|
|
1302 | |
|
|
1303 | req->result = -1; |
|
|
1304 | |
|
|
1305 | errno = EINVAL; |
|
|
1306 | if (!rel) |
|
|
1307 | return; |
|
|
1308 | |
|
|
1309 | errno = ENOENT; |
|
|
1310 | if (!*rel) |
|
|
1311 | return; |
|
|
1312 | |
|
|
1313 | if (!req->ptr2) |
|
|
1314 | { |
|
|
1315 | X_LOCK (wrklock); |
|
|
1316 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1317 | X_UNLOCK (wrklock); |
|
|
1318 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1319 | |
|
|
1320 | errno = ENOMEM; |
|
|
1321 | if (!req->ptr2) |
|
|
1322 | return; |
|
|
1323 | } |
|
|
1324 | |
|
|
1325 | res = req->ptr2; |
|
|
1326 | tmp1 = res + PATH_MAX; |
|
|
1327 | tmp2 = tmp1 + PATH_MAX; |
|
|
1328 | |
|
|
1329 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1330 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1331 | /* on linux we may be able to ask the kernel */ |
|
|
1332 | { |
|
|
1333 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1334 | |
|
|
1335 | if (fd >= 0) |
|
|
1336 | { |
|
|
1337 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1338 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1339 | close (fd); |
|
|
1340 | |
|
|
1341 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1342 | |
|
|
1343 | if (req->result > 0) |
|
|
1344 | goto done; |
|
|
1345 | } |
|
|
1346 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1347 | return; |
|
|
1348 | } |
|
|
1349 | #endif |
|
|
1350 | #endif |
|
|
1351 | |
|
|
1352 | if (*rel != '/') |
|
|
1353 | { |
|
|
1354 | if (!getcwd (res, PATH_MAX)) |
|
|
1355 | return; |
|
|
1356 | |
|
|
1357 | if (res [1]) /* only use if not / */ |
|
|
1358 | res += strlen (res); |
|
|
1359 | } |
|
|
1360 | |
|
|
1361 | while (*rel) |
|
|
1362 | { |
|
|
1363 | eio_ssize_t len, linklen; |
|
|
1364 | char *beg = rel; |
|
|
1365 | |
|
|
1366 | while (*rel && *rel != '/') |
|
|
1367 | ++rel; |
|
|
1368 | |
|
|
1369 | len = rel - beg; |
|
|
1370 | |
|
|
1371 | if (!len) /* skip slashes */ |
|
|
1372 | { |
|
|
1373 | ++rel; |
|
|
1374 | continue; |
|
|
1375 | } |
|
|
1376 | |
|
|
1377 | if (beg [0] == '.') |
|
|
1378 | { |
|
|
1379 | if (len == 1) |
|
|
1380 | continue; /* . - nop */ |
|
|
1381 | |
|
|
1382 | if (beg [1] == '.' && len == 2) |
|
|
1383 | { |
|
|
1384 | /* .. - back up one component, if possible */ |
|
|
1385 | |
|
|
1386 | while (res != req->ptr2) |
|
|
1387 | if (*--res == '/') |
|
|
1388 | break; |
|
|
1389 | |
|
|
1390 | continue; |
|
|
1391 | } |
|
|
1392 | } |
|
|
1393 | |
|
|
1394 | errno = ENAMETOOLONG; |
|
|
1395 | if (res + 1 + len + 1 >= tmp1) |
|
|
1396 | return; |
|
|
1397 | |
|
|
1398 | /* copy one component */ |
|
|
1399 | *res = '/'; |
|
|
1400 | memcpy (res + 1, beg, len); |
|
|
1401 | |
|
|
1402 | /* zero-terminate, for readlink */ |
|
|
1403 | res [len + 1] = 0; |
|
|
1404 | |
|
|
1405 | /* now check if it's a symlink */ |
|
|
1406 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1407 | |
|
|
1408 | if (linklen < 0) |
|
|
1409 | { |
|
|
1410 | if (errno != EINVAL) |
|
|
1411 | return; |
|
|
1412 | |
|
|
1413 | /* it's a normal directory. hopefully */ |
|
|
1414 | res += len + 1; |
|
|
1415 | } |
|
|
1416 | else |
|
|
1417 | { |
|
|
1418 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1419 | int rellen = strlen (rel); |
|
|
1420 | |
|
|
1421 | errno = ENAMETOOLONG; |
|
|
1422 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1423 | return; |
|
|
1424 | |
|
|
1425 | errno = ELOOP; |
|
|
1426 | if (!--symlinks) |
|
|
1427 | return; |
|
|
1428 | |
|
|
1429 | if (*tmp1 == '/') |
|
|
1430 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1431 | |
|
|
1432 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1433 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1434 | tmp2 [linklen] = '/'; |
|
|
1435 | memcpy (tmp2, tmp1, linklen); |
|
|
1436 | |
|
|
1437 | rel = tmp2; |
|
|
1438 | } |
|
|
1439 | } |
|
|
1440 | |
|
|
1441 | /* special case for the lone root path */ |
|
|
1442 | if (res == req->ptr2) |
|
|
1443 | *res++ = '/'; |
|
|
1444 | |
|
|
1445 | req->result = res - (char *)req->ptr2; |
|
|
1446 | |
|
|
1447 | done: |
|
|
1448 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
1069 | } |
1449 | } |
1070 | |
1450 | |
1071 | static signed char |
1451 | static signed char |
1072 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1452 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1073 | { |
1453 | { |
… | |
… | |
1255 | |
1635 | |
1256 | X_LOCK (wrklock); |
1636 | X_LOCK (wrklock); |
1257 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1637 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1258 | self->dirp = dirp = opendir (req->ptr1); |
1638 | self->dirp = dirp = opendir (req->ptr1); |
1259 | |
1639 | |
|
|
1640 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1641 | free (req->ptr1); |
|
|
1642 | |
1260 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1643 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1261 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1644 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1262 | req->ptr2 = names = malloc (namesalloc); |
1645 | req->ptr2 = names = malloc (namesalloc); |
1263 | X_UNLOCK (wrklock); |
1646 | X_UNLOCK (wrklock); |
1264 | |
1647 | |
… | |
… | |
1315 | /* skip . and .. entries */ |
1698 | /* skip . and .. entries */ |
1316 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1699 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1317 | { |
1700 | { |
1318 | int len = D_NAMLEN (entp) + 1; |
1701 | int len = D_NAMLEN (entp) + 1; |
1319 | |
1702 | |
1320 | while (expect_false (namesoffs + len > namesalloc)) |
1703 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1321 | { |
1704 | { |
1322 | namesalloc *= 2; |
1705 | namesalloc *= 2; |
1323 | X_LOCK (wrklock); |
1706 | X_LOCK (wrklock); |
1324 | req->ptr2 = names = realloc (names, namesalloc); |
1707 | req->ptr2 = names = realloc (names, namesalloc); |
1325 | X_UNLOCK (wrklock); |
1708 | X_UNLOCK (wrklock); |
… | |
… | |
1332 | |
1715 | |
1333 | if (dents) |
1716 | if (dents) |
1334 | { |
1717 | { |
1335 | struct eio_dirent *ent; |
1718 | struct eio_dirent *ent; |
1336 | |
1719 | |
1337 | if (expect_false (dentoffs == dentalloc)) |
1720 | if (ecb_expect_false (dentoffs == dentalloc)) |
1338 | { |
1721 | { |
1339 | dentalloc *= 2; |
1722 | dentalloc *= 2; |
1340 | X_LOCK (wrklock); |
1723 | X_LOCK (wrklock); |
1341 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1724 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
1342 | X_UNLOCK (wrklock); |
1725 | X_UNLOCK (wrklock); |
… | |
… | |
1430 | break; |
1813 | break; |
1431 | } |
1814 | } |
1432 | } |
1815 | } |
1433 | } |
1816 | } |
1434 | |
1817 | |
1435 | #ifdef PAGESIZE |
|
|
1436 | # define eio_pagesize() PAGESIZE |
|
|
1437 | #else |
|
|
1438 | static intptr_t |
|
|
1439 | eio_pagesize (void) |
|
|
1440 | { |
|
|
1441 | static intptr_t page; |
|
|
1442 | |
|
|
1443 | if (!page) |
|
|
1444 | page = sysconf (_SC_PAGESIZE); |
|
|
1445 | |
|
|
1446 | return page; |
|
|
1447 | } |
|
|
1448 | #endif |
|
|
1449 | |
|
|
1450 | static void |
|
|
1451 | eio_page_align (void **addr, size_t *length) |
|
|
1452 | { |
|
|
1453 | intptr_t mask = eio_pagesize () - 1; |
|
|
1454 | |
|
|
1455 | /* round down addr */ |
|
|
1456 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1457 | |
|
|
1458 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1459 | *length += adj; |
|
|
1460 | |
|
|
1461 | /* round up length */ |
|
|
1462 | *length = (*length + mask) & ~mask; |
|
|
1463 | } |
|
|
1464 | |
|
|
1465 | #if !_POSIX_MEMLOCK |
|
|
1466 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1467 | #else |
|
|
1468 | |
|
|
1469 | static int |
|
|
1470 | eio__mlockall (int flags) |
|
|
1471 | { |
|
|
1472 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1473 | extern int mallopt (int, int); |
|
|
1474 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1475 | #endif |
|
|
1476 | |
|
|
1477 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1478 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1479 | { |
|
|
1480 | flags = 0 |
|
|
1481 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1482 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1483 | } |
|
|
1484 | |
|
|
1485 | return mlockall (flags); |
|
|
1486 | } |
|
|
1487 | #endif |
|
|
1488 | |
|
|
1489 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1490 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1491 | #else |
|
|
1492 | |
|
|
1493 | static int |
|
|
1494 | eio__mlock (void *addr, size_t length) |
|
|
1495 | { |
|
|
1496 | eio_page_align (&addr, &length); |
|
|
1497 | |
|
|
1498 | return mlock (addr, length); |
|
|
1499 | } |
|
|
1500 | |
|
|
1501 | #endif |
|
|
1502 | |
|
|
1503 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1504 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1505 | #else |
|
|
1506 | |
|
|
1507 | int |
|
|
1508 | eio__msync (void *mem, size_t len, int flags) |
|
|
1509 | { |
|
|
1510 | eio_page_align (&mem, &len); |
|
|
1511 | |
|
|
1512 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1513 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1514 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1515 | { |
|
|
1516 | flags = 0 |
|
|
1517 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1518 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1519 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | return msync (mem, len, flags); |
|
|
1523 | } |
|
|
1524 | |
|
|
1525 | #endif |
|
|
1526 | |
|
|
1527 | int |
|
|
1528 | eio__mtouch (eio_req *req) |
|
|
1529 | { |
|
|
1530 | void *mem = req->ptr2; |
|
|
1531 | size_t len = req->size; |
|
|
1532 | int flags = req->int1; |
|
|
1533 | |
|
|
1534 | eio_page_align (&mem, &len); |
|
|
1535 | |
|
|
1536 | { |
|
|
1537 | intptr_t addr = (intptr_t)mem; |
|
|
1538 | intptr_t end = addr + len; |
|
|
1539 | intptr_t page = eio_pagesize (); |
|
|
1540 | |
|
|
1541 | if (addr < end) |
|
|
1542 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1543 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1544 | else |
|
|
1545 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1546 | } |
|
|
1547 | |
|
|
1548 | return 0; |
|
|
1549 | } |
|
|
1550 | |
|
|
1551 | /*****************************************************************************/ |
1818 | /*****************************************************************************/ |
1552 | |
1819 | |
1553 | #define ALLOC(len) \ |
1820 | #define ALLOC(len) \ |
1554 | if (!req->ptr2) \ |
1821 | if (!req->ptr2) \ |
1555 | { \ |
1822 | { \ |
… | |
… | |
1568 | X_THREAD_PROC (etp_proc) |
1835 | X_THREAD_PROC (etp_proc) |
1569 | { |
1836 | { |
1570 | ETP_REQ *req; |
1837 | ETP_REQ *req; |
1571 | struct timespec ts; |
1838 | struct timespec ts; |
1572 | etp_worker *self = (etp_worker *)thr_arg; |
1839 | etp_worker *self = (etp_worker *)thr_arg; |
|
|
1840 | int timeout; |
1573 | |
1841 | |
1574 | /* try to distribute timeouts somewhat randomly */ |
1842 | /* try to distribute timeouts somewhat evenly */ |
1575 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1843 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1576 | |
1844 | |
1577 | for (;;) |
1845 | for (;;) |
1578 | { |
1846 | { |
|
|
1847 | ts.tv_sec = 0; |
|
|
1848 | |
1579 | X_LOCK (reqlock); |
1849 | X_LOCK (reqlock); |
1580 | |
1850 | |
1581 | for (;;) |
1851 | for (;;) |
1582 | { |
1852 | { |
1583 | self->req = req = reqq_shift (&req_queue); |
1853 | self->req = req = reqq_shift (&req_queue); |
1584 | |
1854 | |
1585 | if (req) |
1855 | if (req) |
1586 | break; |
1856 | break; |
1587 | |
1857 | |
|
|
1858 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
1859 | { |
|
|
1860 | X_UNLOCK (reqlock); |
|
|
1861 | X_LOCK (wrklock); |
|
|
1862 | --started; |
|
|
1863 | X_UNLOCK (wrklock); |
|
|
1864 | goto quit; |
|
|
1865 | } |
|
|
1866 | |
1588 | ++idle; |
1867 | ++idle; |
1589 | |
1868 | |
1590 | ts.tv_sec = time (0) + idle_timeout; |
1869 | if (idle <= max_idle) |
1591 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1870 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1871 | X_COND_WAIT (reqwait, reqlock); |
|
|
1872 | else |
1592 | { |
1873 | { |
1593 | if (idle > max_idle) |
1874 | /* initialise timeout once */ |
1594 | { |
1875 | if (!ts.tv_sec) |
1595 | --idle; |
1876 | ts.tv_sec = time (0) + idle_timeout; |
1596 | X_UNLOCK (reqlock); |
|
|
1597 | X_LOCK (wrklock); |
|
|
1598 | --started; |
|
|
1599 | X_UNLOCK (wrklock); |
|
|
1600 | goto quit; |
|
|
1601 | } |
|
|
1602 | |
1877 | |
1603 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1604 | X_COND_WAIT (reqwait, reqlock); |
1878 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1879 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
1605 | } |
1880 | } |
1606 | |
1881 | |
1607 | --idle; |
1882 | --idle; |
1608 | } |
1883 | } |
1609 | |
1884 | |
… | |
… | |
1612 | X_UNLOCK (reqlock); |
1887 | X_UNLOCK (reqlock); |
1613 | |
1888 | |
1614 | if (req->type < 0) |
1889 | if (req->type < 0) |
1615 | goto quit; |
1890 | goto quit; |
1616 | |
1891 | |
1617 | if (!EIO_CANCELLED (req)) |
|
|
1618 | ETP_EXECUTE (self, req); |
1892 | ETP_EXECUTE (self, req); |
1619 | |
1893 | |
1620 | X_LOCK (reslock); |
1894 | X_LOCK (reslock); |
1621 | |
1895 | |
1622 | ++npending; |
1896 | ++npending; |
1623 | |
1897 | |
… | |
… | |
1638 | return 0; |
1912 | return 0; |
1639 | } |
1913 | } |
1640 | |
1914 | |
1641 | /*****************************************************************************/ |
1915 | /*****************************************************************************/ |
1642 | |
1916 | |
|
|
1917 | int ecb_cold |
1643 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1918 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1644 | { |
1919 | { |
1645 | return etp_init (want_poll, done_poll); |
1920 | return etp_init (want_poll, done_poll); |
1646 | } |
1921 | } |
1647 | |
1922 | |
|
|
1923 | ecb_inline void |
1648 | static void eio_api_destroy (eio_req *req) |
1924 | eio_api_destroy (eio_req *req) |
1649 | { |
1925 | { |
1650 | free (req); |
1926 | free (req); |
1651 | } |
1927 | } |
1652 | |
1928 | |
1653 | #define REQ(rtype) \ |
1929 | #define REQ(rtype) \ |
… | |
… | |
1672 | { \ |
1948 | { \ |
1673 | eio_api_destroy (req); \ |
1949 | eio_api_destroy (req); \ |
1674 | return 0; \ |
1950 | return 0; \ |
1675 | } |
1951 | } |
1676 | |
1952 | |
|
|
1953 | static void |
1677 | static void eio_execute (etp_worker *self, eio_req *req) |
1954 | eio_execute (etp_worker *self, eio_req *req) |
1678 | { |
1955 | { |
|
|
1956 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
1957 | { |
|
|
1958 | req->result = -1; |
|
|
1959 | req->errorno = ECANCELED; |
|
|
1960 | return; |
|
|
1961 | } |
|
|
1962 | |
1679 | switch (req->type) |
1963 | switch (req->type) |
1680 | { |
1964 | { |
1681 | case EIO_READ: ALLOC (req->size); |
1965 | case EIO_READ: ALLOC (req->size); |
1682 | req->result = req->offs >= 0 |
1966 | req->result = req->offs >= 0 |
1683 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1967 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1717 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
2001 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1718 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
2002 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1719 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
2003 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1720 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
2004 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1721 | |
2005 | |
|
|
2006 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
2007 | |
1722 | case EIO_READLINK: ALLOC (PATH_MAX); |
2008 | case EIO_READLINK: ALLOC (PATH_MAX); |
1723 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
2009 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1724 | |
2010 | |
1725 | case EIO_SYNC: req->result = 0; sync (); break; |
2011 | case EIO_SYNC: req->result = 0; sync (); break; |
1726 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2012 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
… | |
… | |
1728 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
2014 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1729 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
2015 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
1730 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
2016 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
1731 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
2017 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1732 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
2018 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
2019 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
1733 | |
2020 | |
1734 | case EIO_READDIR: eio__scandir (req, self); break; |
2021 | case EIO_READDIR: eio__scandir (req, self); break; |
1735 | |
2022 | |
1736 | case EIO_BUSY: |
2023 | case EIO_BUSY: |
1737 | #ifdef _WIN32 |
2024 | #ifdef _WIN32 |
… | |
… | |
1778 | case EIO_NOP: |
2065 | case EIO_NOP: |
1779 | req->result = 0; |
2066 | req->result = 0; |
1780 | break; |
2067 | break; |
1781 | |
2068 | |
1782 | case EIO_CUSTOM: |
2069 | case EIO_CUSTOM: |
1783 | ((void (*)(eio_req *))req->feed) (req); |
2070 | req->feed (req); |
1784 | break; |
2071 | break; |
1785 | |
2072 | |
1786 | default: |
2073 | default: |
1787 | errno = ENOSYS; |
2074 | errno = ENOSYS; |
1788 | req->result = -1; |
2075 | req->result = -1; |
… | |
… | |
1837 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
2124 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1838 | { |
2125 | { |
1839 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
2126 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1840 | } |
2127 | } |
1841 | |
2128 | |
|
|
2129 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
|
|
2130 | { |
|
|
2131 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
|
|
2132 | } |
|
|
2133 | |
1842 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
2134 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1843 | { |
2135 | { |
1844 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
2136 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1845 | } |
2137 | } |
1846 | |
2138 | |
… | |
… | |
1887 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
2179 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1888 | { |
2180 | { |
1889 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2181 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1890 | } |
2182 | } |
1891 | |
2183 | |
1892 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2184 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1893 | { |
2185 | { |
1894 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2186 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1895 | } |
2187 | } |
1896 | |
2188 | |
1897 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
2189 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
… | |
… | |
1917 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
2209 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1918 | { |
2210 | { |
1919 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
2211 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1920 | } |
2212 | } |
1921 | |
2213 | |
1922 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2214 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1923 | { |
2215 | { |
1924 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2216 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1925 | } |
2217 | } |
1926 | |
2218 | |
1927 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
2219 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
… | |
… | |
1941 | } |
2233 | } |
1942 | |
2234 | |
1943 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2235 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1944 | { |
2236 | { |
1945 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2237 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
|
|
2238 | } |
|
|
2239 | |
|
|
2240 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2241 | { |
|
|
2242 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
1946 | } |
2243 | } |
1947 | |
2244 | |
1948 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2245 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1949 | { |
2246 | { |
1950 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2247 | return eio__1path (EIO_STAT, path, pri, cb, data); |
… | |
… | |
2009 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2306 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2010 | { |
2307 | { |
2011 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2308 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2012 | } |
2309 | } |
2013 | |
2310 | |
2014 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2311 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2015 | { |
2312 | { |
2016 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
2313 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2017 | } |
2314 | } |
2018 | |
2315 | |
2019 | #endif |
2316 | #endif |
2020 | |
2317 | |
2021 | eio_req *eio_grp (eio_cb cb, void *data) |
2318 | eio_req *eio_grp (eio_cb cb, void *data) |
… | |
… | |
2030 | #undef SEND |
2327 | #undef SEND |
2031 | |
2328 | |
2032 | /*****************************************************************************/ |
2329 | /*****************************************************************************/ |
2033 | /* grp functions */ |
2330 | /* grp functions */ |
2034 | |
2331 | |
|
|
2332 | void |
2035 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2333 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2036 | { |
2334 | { |
2037 | grp->int2 = limit; |
2335 | grp->int2 = limit; |
2038 | grp->feed = feed; |
2336 | grp->feed = feed; |
2039 | |
2337 | |
2040 | grp_try_feed (grp); |
2338 | grp_try_feed (grp); |
2041 | } |
2339 | } |
2042 | |
2340 | |
|
|
2341 | void |
2043 | void eio_grp_limit (eio_req *grp, int limit) |
2342 | eio_grp_limit (eio_req *grp, int limit) |
2044 | { |
2343 | { |
2045 | grp->int2 = limit; |
2344 | grp->int2 = limit; |
2046 | |
2345 | |
2047 | grp_try_feed (grp); |
2346 | grp_try_feed (grp); |
2048 | } |
2347 | } |
2049 | |
2348 | |
|
|
2349 | void |
2050 | void eio_grp_add (eio_req *grp, eio_req *req) |
2350 | eio_grp_add (eio_req *grp, eio_req *req) |
2051 | { |
2351 | { |
2052 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2352 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2053 | |
2353 | |
2054 | grp->flags |= EIO_FLAG_GROUPADD; |
2354 | grp->flags |= EIO_FLAG_GROUPADD; |
2055 | |
2355 | |
… | |
… | |
2066 | } |
2366 | } |
2067 | |
2367 | |
2068 | /*****************************************************************************/ |
2368 | /*****************************************************************************/ |
2069 | /* misc garbage */ |
2369 | /* misc garbage */ |
2070 | |
2370 | |
|
|
2371 | eio_ssize_t |
2071 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2372 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2072 | { |
2373 | { |
2073 | etp_worker wrk; |
2374 | etp_worker wrk; |
2074 | ssize_t ret; |
2375 | eio_ssize_t ret; |
2075 | |
2376 | |
2076 | wrk.dbuf = 0; |
2377 | wrk.dbuf = 0; |
2077 | |
2378 | |
2078 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
2379 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
2079 | |
2380 | |