1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
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40 | #ifndef _WIN32 |
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41 | # include "config.h" |
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42 | #endif |
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43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
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45 | #include "ecb.h" |
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46 | |
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47 | #ifdef EIO_STACKSIZE |
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48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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49 | #endif |
41 | #include "xthread.h" |
50 | #include "xthread.h" |
42 | |
51 | |
43 | #include <errno.h> |
52 | #include <errno.h> |
44 | #include <stddef.h> |
53 | #include <stddef.h> |
45 | #include <stdlib.h> |
54 | #include <stdlib.h> |
46 | #include <string.h> |
55 | #include <string.h> |
47 | #include <errno.h> |
56 | #include <errno.h> |
48 | #include <sys/types.h> |
57 | #include <sys/types.h> |
49 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
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59 | #include <sys/statvfs.h> |
50 | #include <limits.h> |
60 | #include <limits.h> |
51 | #include <fcntl.h> |
61 | #include <fcntl.h> |
52 | #include <assert.h> |
62 | #include <assert.h> |
53 | |
63 | |
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64 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
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65 | /* intptr_t only comes form stdint.h, says idiot openbsd coder */ |
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66 | #if HAVE_STDINT_H |
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67 | # include <stdint.h> |
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68 | #endif |
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69 | |
54 | #ifndef EIO_FINISH |
70 | #ifndef EIO_FINISH |
55 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
71 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
56 | #endif |
72 | #endif |
57 | |
73 | |
58 | #ifndef EIO_DESTROY |
74 | #ifndef EIO_DESTROY |
… | |
… | |
64 | #endif |
80 | #endif |
65 | |
81 | |
66 | #ifdef _WIN32 |
82 | #ifdef _WIN32 |
67 | |
83 | |
68 | /*doh*/ |
84 | /*doh*/ |
69 | |
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70 | #else |
85 | #else |
71 | |
86 | |
72 | # include "config.h" |
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73 | # include <sys/time.h> |
87 | # include <sys/time.h> |
74 | # include <sys/select.h> |
88 | # include <sys/select.h> |
75 | # include <unistd.h> |
89 | # include <unistd.h> |
76 | # include <utime.h> |
90 | # include <utime.h> |
77 | # include <signal.h> |
91 | # include <signal.h> |
78 | # include <dirent.h> |
92 | # include <dirent.h> |
79 | |
93 | |
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94 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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95 | # include <sys/mman.h> |
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96 | #endif |
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97 | |
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98 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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99 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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100 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
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101 | # define D_INO(de) (de)->d_fileno |
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102 | # define D_NAMLEN(de) (de)->d_namlen |
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103 | # elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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104 | # define D_INO(de) (de)->d_ino |
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105 | # endif |
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106 | |
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107 | #ifdef _D_EXACT_NAMLEN |
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108 | # undef D_NAMLEN |
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109 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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110 | #endif |
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111 | |
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112 | # ifdef _DIRENT_HAVE_D_TYPE |
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113 | # define D_TYPE(de) (de)->d_type |
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114 | # endif |
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115 | |
80 | # ifndef EIO_STRUCT_DIRENT |
116 | # ifndef EIO_STRUCT_DIRENT |
81 | # define EIO_STRUCT_DIRENT struct dirent |
117 | # define EIO_STRUCT_DIRENT struct dirent |
82 | # endif |
118 | # endif |
83 | |
119 | |
84 | #endif |
120 | #endif |
85 | |
121 | |
86 | #if HAVE_SENDFILE |
122 | #if HAVE_SENDFILE |
87 | # if __linux |
123 | # if __linux |
88 | # include <sys/sendfile.h> |
124 | # include <sys/sendfile.h> |
89 | # elif __freebsd |
125 | # elif __FreeBSD__ || defined __APPLE__ |
90 | # include <sys/socket.h> |
126 | # include <sys/socket.h> |
91 | # include <sys/uio.h> |
127 | # include <sys/uio.h> |
92 | # elif __hpux |
128 | # elif __hpux |
93 | # include <sys/socket.h> |
129 | # include <sys/socket.h> |
94 | # elif __solaris /* not yet */ |
130 | # elif __solaris |
95 | # include <sys/sendfile.h> |
131 | # include <sys/sendfile.h> |
96 | # else |
132 | # else |
97 | # error sendfile support requested but not available |
133 | # error sendfile support requested but not available |
98 | # endif |
134 | # endif |
99 | #endif |
135 | #endif |
100 | |
136 | |
101 | /* number of seconds after which an idle threads exit */ |
137 | #ifndef D_TYPE |
102 | #define IDLE_TIMEOUT 10 |
138 | # define D_TYPE(de) 0 |
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139 | #endif |
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140 | #ifndef D_INO |
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141 | # define D_INO(de) 0 |
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142 | #endif |
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143 | #ifndef D_NAMLEN |
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144 | # define D_NAMLEN(de) strlen ((de)->d_name) |
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145 | #endif |
103 | |
146 | |
104 | /* used for struct dirent, AIX doesn't provide it */ |
147 | /* used for struct dirent, AIX doesn't provide it */ |
105 | #ifndef NAME_MAX |
148 | #ifndef NAME_MAX |
106 | # define NAME_MAX 4096 |
149 | # define NAME_MAX 4096 |
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150 | #endif |
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151 | |
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152 | /* used for readlink etc. */ |
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153 | #ifndef PATH_MAX |
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154 | # define PATH_MAX 4096 |
107 | #endif |
155 | #endif |
108 | |
156 | |
109 | /* buffer size for various temporary buffers */ |
157 | /* buffer size for various temporary buffers */ |
110 | #define EIO_BUFSIZE 65536 |
158 | #define EIO_BUFSIZE 65536 |
111 | |
159 | |
… | |
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117 | errno = ENOMEM; \ |
165 | errno = ENOMEM; \ |
118 | if (!eio_buf) \ |
166 | if (!eio_buf) \ |
119 | return -1; |
167 | return -1; |
120 | |
168 | |
121 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
169 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
122 | |
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123 | /*****************************************************************************/ |
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124 | |
170 | |
125 | #define ETP_PRI_MIN EIO_PRI_MIN |
171 | #define ETP_PRI_MIN EIO_PRI_MIN |
126 | #define ETP_PRI_MAX EIO_PRI_MAX |
172 | #define ETP_PRI_MAX EIO_PRI_MAX |
127 | |
173 | |
128 | struct etp_worker; |
174 | struct etp_worker; |
… | |
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144 | if (wrk->dirp) \ |
190 | if (wrk->dirp) \ |
145 | { \ |
191 | { \ |
146 | closedir (wrk->dirp); \ |
192 | closedir (wrk->dirp); \ |
147 | wrk->dirp = 0; \ |
193 | wrk->dirp = 0; \ |
148 | } |
194 | } |
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195 | |
149 | #define ETP_WORKER_COMMON \ |
196 | #define ETP_WORKER_COMMON \ |
150 | void *dbuf; \ |
197 | void *dbuf; \ |
151 | DIR *dirp; |
198 | DIR *dirp; |
152 | |
199 | |
153 | /*****************************************************************************/ |
200 | /*****************************************************************************/ |
154 | |
201 | |
155 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
202 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
156 | |
203 | |
157 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
204 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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205 | ecb_inline int |
158 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
206 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
159 | { |
207 | { |
160 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
208 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
161 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
209 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
162 | } |
210 | } |
163 | |
211 | |
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170 | static unsigned int max_poll_reqs; /* reslock */ |
218 | static unsigned int max_poll_reqs; /* reslock */ |
171 | |
219 | |
172 | static volatile unsigned int nreqs; /* reqlock */ |
220 | static volatile unsigned int nreqs; /* reqlock */ |
173 | static volatile unsigned int nready; /* reqlock */ |
221 | static volatile unsigned int nready; /* reqlock */ |
174 | static volatile unsigned int npending; /* reqlock */ |
222 | static volatile unsigned int npending; /* reqlock */ |
175 | static volatile unsigned int max_idle = 4; |
223 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
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224 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
176 | |
225 | |
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226 | static xmutex_t wrklock; |
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227 | static xmutex_t reslock; |
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228 | static xmutex_t reqlock; |
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229 | static xcond_t reqwait; |
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230 | |
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231 | #if !HAVE_PREADWRITE |
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232 | /* |
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233 | * make our pread/pwrite emulation safe against themselves, but not against |
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234 | * normal read/write by using a mutex. slows down execution a lot, |
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235 | * but that's your problem, not mine. |
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236 | */ |
177 | static mutex_t wrklock = X_MUTEX_INIT; |
237 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
178 | static mutex_t reslock = X_MUTEX_INIT; |
238 | #endif |
179 | static mutex_t reqlock = X_MUTEX_INIT; |
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180 | static cond_t reqwait = X_COND_INIT; |
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181 | |
239 | |
182 | typedef struct etp_worker |
240 | typedef struct etp_worker |
183 | { |
241 | { |
184 | /* locked by wrklock */ |
242 | /* locked by wrklock */ |
185 | struct etp_worker *prev, *next; |
243 | struct etp_worker *prev, *next; |
186 | |
244 | |
187 | thread_t tid; |
245 | xthread_t tid; |
188 | |
246 | |
189 | /* locked by reslock, reqlock or wrklock */ |
247 | /* locked by reslock, reqlock or wrklock */ |
190 | ETP_REQ *req; /* currently processed request */ |
248 | ETP_REQ *req; /* currently processed request */ |
191 | |
249 | |
192 | ETP_WORKER_COMMON |
250 | ETP_WORKER_COMMON |
… | |
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197 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
255 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
198 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
256 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
199 | |
257 | |
200 | /* worker threads management */ |
258 | /* worker threads management */ |
201 | |
259 | |
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260 | static void ecb_cold |
202 | static void etp_worker_clear (etp_worker *wrk) |
261 | etp_worker_clear (etp_worker *wrk) |
203 | { |
262 | { |
204 | ETP_WORKER_CLEAR (wrk); |
263 | ETP_WORKER_CLEAR (wrk); |
205 | } |
264 | } |
206 | |
265 | |
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266 | static void ecb_cold |
207 | static void etp_worker_free (etp_worker *wrk) |
267 | etp_worker_free (etp_worker *wrk) |
208 | { |
268 | { |
209 | wrk->next->prev = wrk->prev; |
269 | wrk->next->prev = wrk->prev; |
210 | wrk->prev->next = wrk->next; |
270 | wrk->prev->next = wrk->next; |
211 | |
271 | |
212 | free (wrk); |
272 | free (wrk); |
213 | } |
273 | } |
214 | |
274 | |
215 | static unsigned int etp_nreqs (void) |
275 | static unsigned int |
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276 | etp_nreqs (void) |
216 | { |
277 | { |
217 | int retval; |
278 | int retval; |
218 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
279 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
219 | retval = nreqs; |
280 | retval = nreqs; |
220 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
281 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
221 | return retval; |
282 | return retval; |
222 | } |
283 | } |
223 | |
284 | |
224 | static unsigned int etp_nready (void) |
285 | static unsigned int |
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286 | etp_nready (void) |
225 | { |
287 | { |
226 | unsigned int retval; |
288 | unsigned int retval; |
227 | |
289 | |
228 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
290 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
229 | retval = nready; |
291 | retval = nready; |
230 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
292 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
231 | |
293 | |
232 | return retval; |
294 | return retval; |
233 | } |
295 | } |
234 | |
296 | |
235 | static unsigned int etp_npending (void) |
297 | static unsigned int |
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298 | etp_npending (void) |
236 | { |
299 | { |
237 | unsigned int retval; |
300 | unsigned int retval; |
238 | |
301 | |
239 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
302 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
240 | retval = npending; |
303 | retval = npending; |
241 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
304 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
242 | |
305 | |
243 | return retval; |
306 | return retval; |
244 | } |
307 | } |
245 | |
308 | |
246 | static unsigned int etp_nthreads (void) |
309 | static unsigned int |
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310 | etp_nthreads (void) |
247 | { |
311 | { |
248 | unsigned int retval; |
312 | unsigned int retval; |
249 | |
313 | |
250 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
314 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
251 | retval = started; |
315 | retval = started; |
… | |
… | |
265 | } etp_reqq; |
329 | } etp_reqq; |
266 | |
330 | |
267 | static etp_reqq req_queue; |
331 | static etp_reqq req_queue; |
268 | static etp_reqq res_queue; |
332 | static etp_reqq res_queue; |
269 | |
333 | |
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334 | static int ecb_noinline |
270 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
335 | reqq_push (etp_reqq *q, ETP_REQ *req) |
271 | { |
336 | { |
272 | int pri = req->pri; |
337 | int pri = req->pri; |
273 | req->next = 0; |
338 | req->next = 0; |
274 | |
339 | |
275 | if (q->qe[pri]) |
340 | if (q->qe[pri]) |
… | |
… | |
281 | q->qe[pri] = q->qs[pri] = req; |
346 | q->qe[pri] = q->qs[pri] = req; |
282 | |
347 | |
283 | return q->size++; |
348 | return q->size++; |
284 | } |
349 | } |
285 | |
350 | |
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351 | static ETP_REQ * ecb_noinline |
286 | static ETP_REQ *reqq_shift (etp_reqq *q) |
352 | reqq_shift (etp_reqq *q) |
287 | { |
353 | { |
288 | int pri; |
354 | int pri; |
289 | |
355 | |
290 | if (!q->size) |
356 | if (!q->size) |
291 | return 0; |
357 | return 0; |
… | |
… | |
306 | } |
372 | } |
307 | |
373 | |
308 | abort (); |
374 | abort (); |
309 | } |
375 | } |
310 | |
376 | |
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377 | static void ecb_cold |
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378 | etp_thread_init (void) |
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379 | { |
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380 | X_MUTEX_CREATE (wrklock); |
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381 | X_MUTEX_CREATE (reslock); |
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382 | X_MUTEX_CREATE (reqlock); |
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383 | X_COND_CREATE (reqwait); |
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384 | } |
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385 | |
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386 | static void ecb_cold |
311 | static void etp_atfork_prepare (void) |
387 | etp_atfork_prepare (void) |
312 | { |
388 | { |
313 | X_LOCK (wrklock); |
389 | X_LOCK (wrklock); |
314 | X_LOCK (reqlock); |
390 | X_LOCK (reqlock); |
315 | X_LOCK (reslock); |
391 | X_LOCK (reslock); |
316 | #if !HAVE_PREADWRITE |
392 | #if !HAVE_PREADWRITE |
317 | X_LOCK (preadwritelock); |
393 | X_LOCK (preadwritelock); |
318 | #endif |
394 | #endif |
319 | } |
395 | } |
320 | |
396 | |
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397 | static void ecb_cold |
321 | static void etp_atfork_parent (void) |
398 | etp_atfork_parent (void) |
322 | { |
399 | { |
323 | #if !HAVE_PREADWRITE |
400 | #if !HAVE_PREADWRITE |
324 | X_UNLOCK (preadwritelock); |
401 | X_UNLOCK (preadwritelock); |
325 | #endif |
402 | #endif |
326 | X_UNLOCK (reslock); |
403 | X_UNLOCK (reslock); |
327 | X_UNLOCK (reqlock); |
404 | X_UNLOCK (reqlock); |
328 | X_UNLOCK (wrklock); |
405 | X_UNLOCK (wrklock); |
329 | } |
406 | } |
330 | |
407 | |
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408 | static void ecb_cold |
331 | static void etp_atfork_child (void) |
409 | etp_atfork_child (void) |
332 | { |
410 | { |
333 | ETP_REQ *prv; |
411 | ETP_REQ *prv; |
334 | |
412 | |
335 | while (prv = reqq_shift (&req_queue)) |
413 | while ((prv = reqq_shift (&req_queue))) |
336 | ETP_DESTROY (prv); |
414 | ETP_DESTROY (prv); |
337 | |
415 | |
338 | while (prv = reqq_shift (&res_queue)) |
416 | while ((prv = reqq_shift (&res_queue))) |
339 | ETP_DESTROY (prv); |
417 | ETP_DESTROY (prv); |
340 | |
418 | |
341 | while (wrk_first.next != &wrk_first) |
419 | while (wrk_first.next != &wrk_first) |
342 | { |
420 | { |
343 | etp_worker *wrk = wrk_first.next; |
421 | etp_worker *wrk = wrk_first.next; |
… | |
… | |
353 | idle = 0; |
431 | idle = 0; |
354 | nreqs = 0; |
432 | nreqs = 0; |
355 | nready = 0; |
433 | nready = 0; |
356 | npending = 0; |
434 | npending = 0; |
357 | |
435 | |
358 | etp_atfork_parent (); |
436 | etp_thread_init (); |
359 | } |
437 | } |
360 | |
438 | |
361 | static void |
439 | static void ecb_cold |
362 | etp_once_init (void) |
440 | etp_once_init (void) |
363 | { |
441 | { |
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442 | etp_thread_init (); |
364 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
443 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
365 | } |
444 | } |
366 | |
445 | |
367 | static int |
446 | static int ecb_cold |
368 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
447 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
369 | { |
448 | { |
370 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
449 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
371 | |
450 | |
372 | pthread_once (&doinit, etp_once_init); |
451 | pthread_once (&doinit, etp_once_init); |
… | |
… | |
377 | return 0; |
456 | return 0; |
378 | } |
457 | } |
379 | |
458 | |
380 | X_THREAD_PROC (etp_proc); |
459 | X_THREAD_PROC (etp_proc); |
381 | |
460 | |
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461 | static void ecb_cold |
382 | static void etp_start_thread (void) |
462 | etp_start_thread (void) |
383 | { |
463 | { |
384 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
464 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
385 | |
465 | |
386 | /*TODO*/ |
466 | /*TODO*/ |
387 | assert (("unable to allocate worker thread data", wrk)); |
467 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
400 | free (wrk); |
480 | free (wrk); |
401 | |
481 | |
402 | X_UNLOCK (wrklock); |
482 | X_UNLOCK (wrklock); |
403 | } |
483 | } |
404 | |
484 | |
|
|
485 | static void |
405 | static void etp_maybe_start_thread (void) |
486 | etp_maybe_start_thread (void) |
406 | { |
487 | { |
407 | if (etp_nthreads () >= wanted) |
488 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
408 | return; |
489 | return; |
409 | |
490 | |
410 | /* todo: maybe use idle here, but might be less exact */ |
491 | /* todo: maybe use idle here, but might be less exact */ |
411 | if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()) |
492 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
412 | return; |
493 | return; |
413 | |
494 | |
414 | etp_start_thread (); |
495 | etp_start_thread (); |
415 | } |
496 | } |
416 | |
497 | |
|
|
498 | static void ecb_cold |
417 | static void etp_end_thread (void) |
499 | etp_end_thread (void) |
418 | { |
500 | { |
419 | eio_req *req = calloc (1, sizeof (eio_req)); |
501 | eio_req *req = calloc (1, sizeof (eio_req)); |
420 | |
502 | |
421 | req->type = -1; |
503 | req->type = -1; |
422 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
504 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
429 | X_LOCK (wrklock); |
511 | X_LOCK (wrklock); |
430 | --started; |
512 | --started; |
431 | X_UNLOCK (wrklock); |
513 | X_UNLOCK (wrklock); |
432 | } |
514 | } |
433 | |
515 | |
434 | static int etp_poll (void) |
516 | static int |
|
|
517 | etp_poll (void) |
435 | { |
518 | { |
436 | unsigned int maxreqs; |
519 | unsigned int maxreqs; |
437 | unsigned int maxtime; |
520 | unsigned int maxtime; |
438 | struct timeval tv_start, tv_now; |
521 | struct timeval tv_start, tv_now; |
439 | |
522 | |
… | |
… | |
469 | |
552 | |
470 | X_LOCK (reqlock); |
553 | X_LOCK (reqlock); |
471 | --nreqs; |
554 | --nreqs; |
472 | X_UNLOCK (reqlock); |
555 | X_UNLOCK (reqlock); |
473 | |
556 | |
474 | if (req->type == EIO_GROUP && req->size) |
557 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
475 | { |
558 | { |
476 | req->int1 = 1; /* mark request as delayed */ |
559 | req->int1 = 1; /* mark request as delayed */ |
477 | continue; |
560 | continue; |
478 | } |
561 | } |
479 | else |
562 | else |
480 | { |
563 | { |
481 | int res = ETP_FINISH (req); |
564 | int res = ETP_FINISH (req); |
482 | if (res) |
565 | if (ecb_expect_false (res)) |
483 | return res; |
566 | return res; |
484 | } |
567 | } |
485 | |
568 | |
486 | if (maxreqs && !--maxreqs) |
569 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
487 | break; |
570 | break; |
488 | |
571 | |
489 | if (maxtime) |
572 | if (maxtime) |
490 | { |
573 | { |
491 | gettimeofday (&tv_now, 0); |
574 | gettimeofday (&tv_now, 0); |
… | |
… | |
497 | |
580 | |
498 | errno = EAGAIN; |
581 | errno = EAGAIN; |
499 | return -1; |
582 | return -1; |
500 | } |
583 | } |
501 | |
584 | |
|
|
585 | static void |
502 | static void etp_cancel (ETP_REQ *req) |
586 | etp_cancel (ETP_REQ *req) |
503 | { |
587 | { |
504 | X_LOCK (wrklock); |
588 | X_LOCK (wrklock); |
505 | req->flags |= EIO_FLAG_CANCELLED; |
589 | req->flags |= EIO_FLAG_CANCELLED; |
506 | X_UNLOCK (wrklock); |
590 | X_UNLOCK (wrklock); |
507 | |
591 | |
508 | eio_grp_cancel (req); |
592 | eio_grp_cancel (req); |
509 | } |
593 | } |
510 | |
594 | |
|
|
595 | static void |
511 | static void etp_submit (ETP_REQ *req) |
596 | etp_submit (ETP_REQ *req) |
512 | { |
597 | { |
513 | req->pri -= ETP_PRI_MIN; |
598 | req->pri -= ETP_PRI_MIN; |
514 | |
599 | |
515 | if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
600 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
516 | if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
601 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
517 | |
602 | |
|
|
603 | if (ecb_expect_false (req->type == EIO_GROUP)) |
|
|
604 | { |
|
|
605 | /* I hope this is worth it :/ */ |
518 | X_LOCK (reqlock); |
606 | X_LOCK (reqlock); |
519 | ++nreqs; |
607 | ++nreqs; |
|
|
608 | X_UNLOCK (reqlock); |
|
|
609 | |
|
|
610 | X_LOCK (reslock); |
|
|
611 | |
|
|
612 | ++npending; |
|
|
613 | |
|
|
614 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
615 | want_poll_cb (); |
|
|
616 | |
|
|
617 | X_UNLOCK (reslock); |
|
|
618 | } |
|
|
619 | else |
|
|
620 | { |
|
|
621 | X_LOCK (reqlock); |
|
|
622 | ++nreqs; |
520 | ++nready; |
623 | ++nready; |
521 | reqq_push (&req_queue, req); |
624 | reqq_push (&req_queue, req); |
522 | X_COND_SIGNAL (reqwait); |
625 | X_COND_SIGNAL (reqwait); |
523 | X_UNLOCK (reqlock); |
626 | X_UNLOCK (reqlock); |
524 | |
627 | |
525 | etp_maybe_start_thread (); |
628 | etp_maybe_start_thread (); |
|
|
629 | } |
526 | } |
630 | } |
527 | |
631 | |
|
|
632 | static void ecb_cold |
528 | static void etp_set_max_poll_time (double nseconds) |
633 | etp_set_max_poll_time (double nseconds) |
529 | { |
634 | { |
530 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
635 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
531 | max_poll_time = nseconds; |
636 | max_poll_time = nseconds * EIO_TICKS; |
532 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
637 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
533 | } |
638 | } |
534 | |
639 | |
|
|
640 | static void ecb_cold |
535 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
641 | etp_set_max_poll_reqs (unsigned int maxreqs) |
536 | { |
642 | { |
537 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
643 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
538 | max_poll_reqs = maxreqs; |
644 | max_poll_reqs = maxreqs; |
539 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
645 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
540 | } |
646 | } |
541 | |
647 | |
|
|
648 | static void ecb_cold |
542 | static void etp_set_max_idle (unsigned int nthreads) |
649 | etp_set_max_idle (unsigned int nthreads) |
543 | { |
650 | { |
544 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
651 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
545 | max_idle = nthreads <= 0 ? 1 : nthreads; |
652 | max_idle = nthreads; |
546 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
653 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
547 | } |
654 | } |
548 | |
655 | |
|
|
656 | static void ecb_cold |
|
|
657 | etp_set_idle_timeout (unsigned int seconds) |
|
|
658 | { |
|
|
659 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
660 | idle_timeout = seconds; |
|
|
661 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
662 | } |
|
|
663 | |
|
|
664 | static void ecb_cold |
549 | static void etp_set_min_parallel (unsigned int nthreads) |
665 | etp_set_min_parallel (unsigned int nthreads) |
550 | { |
666 | { |
551 | if (wanted < nthreads) |
667 | if (wanted < nthreads) |
552 | wanted = nthreads; |
668 | wanted = nthreads; |
553 | } |
669 | } |
554 | |
670 | |
|
|
671 | static void ecb_cold |
555 | static void etp_set_max_parallel (unsigned int nthreads) |
672 | etp_set_max_parallel (unsigned int nthreads) |
556 | { |
673 | { |
557 | if (wanted > nthreads) |
674 | if (wanted > nthreads) |
558 | wanted = nthreads; |
675 | wanted = nthreads; |
559 | |
676 | |
560 | while (started > wanted) |
677 | while (started > wanted) |
561 | etp_end_thread (); |
678 | etp_end_thread (); |
562 | } |
679 | } |
563 | |
680 | |
564 | /*****************************************************************************/ |
681 | /*****************************************************************************/ |
565 | |
682 | |
|
|
683 | static void |
566 | static void grp_try_feed (eio_req *grp) |
684 | grp_try_feed (eio_req *grp) |
567 | { |
685 | { |
568 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
686 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
569 | { |
687 | { |
570 | int old_len = grp->size; |
688 | grp->flags &= ~EIO_FLAG_GROUPADD; |
571 | |
689 | |
572 | EIO_FEED (grp); |
690 | EIO_FEED (grp); |
573 | |
691 | |
574 | /* stop if no progress has been made */ |
692 | /* stop if no progress has been made */ |
575 | if (old_len == grp->size) |
693 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
576 | { |
694 | { |
577 | grp->feed = 0; |
695 | grp->feed = 0; |
578 | break; |
696 | break; |
579 | } |
697 | } |
580 | } |
698 | } |
581 | } |
699 | } |
582 | |
700 | |
|
|
701 | static int |
583 | static int grp_dec (eio_req *grp) |
702 | grp_dec (eio_req *grp) |
584 | { |
703 | { |
585 | --grp->size; |
704 | --grp->size; |
586 | |
705 | |
587 | /* call feeder, if applicable */ |
706 | /* call feeder, if applicable */ |
588 | grp_try_feed (grp); |
707 | grp_try_feed (grp); |
… | |
… | |
592 | return eio_finish (grp); |
711 | return eio_finish (grp); |
593 | else |
712 | else |
594 | return 0; |
713 | return 0; |
595 | } |
714 | } |
596 | |
715 | |
|
|
716 | void |
597 | void eio_destroy (eio_req *req) |
717 | eio_destroy (eio_req *req) |
598 | { |
718 | { |
599 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
719 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
600 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
720 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
601 | |
721 | |
602 | EIO_DESTROY (req); |
722 | EIO_DESTROY (req); |
603 | } |
723 | } |
604 | |
724 | |
|
|
725 | static int |
605 | static int eio_finish (eio_req *req) |
726 | eio_finish (eio_req *req) |
606 | { |
727 | { |
607 | int res = EIO_FINISH (req); |
728 | int res = EIO_FINISH (req); |
608 | |
729 | |
609 | if (req->grp) |
730 | if (req->grp) |
610 | { |
731 | { |
… | |
… | |
627 | eio_destroy (req); |
748 | eio_destroy (req); |
628 | |
749 | |
629 | return res; |
750 | return res; |
630 | } |
751 | } |
631 | |
752 | |
|
|
753 | void |
632 | void eio_grp_cancel (eio_req *grp) |
754 | eio_grp_cancel (eio_req *grp) |
633 | { |
755 | { |
634 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
756 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
635 | eio_cancel (grp); |
757 | eio_cancel (grp); |
636 | } |
758 | } |
637 | |
759 | |
|
|
760 | void |
638 | void eio_cancel (eio_req *req) |
761 | eio_cancel (eio_req *req) |
639 | { |
762 | { |
640 | etp_cancel (req); |
763 | etp_cancel (req); |
641 | } |
764 | } |
642 | |
765 | |
|
|
766 | void |
643 | void eio_submit (eio_req *req) |
767 | eio_submit (eio_req *req) |
644 | { |
768 | { |
645 | etp_submit (req); |
769 | etp_submit (req); |
646 | } |
770 | } |
647 | |
771 | |
648 | unsigned int eio_nreqs (void) |
772 | unsigned int |
|
|
773 | eio_nreqs (void) |
649 | { |
774 | { |
650 | return etp_nreqs (); |
775 | return etp_nreqs (); |
651 | } |
776 | } |
652 | |
777 | |
653 | unsigned int eio_nready (void) |
778 | unsigned int |
|
|
779 | eio_nready (void) |
654 | { |
780 | { |
655 | return etp_nready (); |
781 | return etp_nready (); |
656 | } |
782 | } |
657 | |
783 | |
658 | unsigned int eio_npending (void) |
784 | unsigned int |
|
|
785 | eio_npending (void) |
659 | { |
786 | { |
660 | return etp_npending (); |
787 | return etp_npending (); |
661 | } |
788 | } |
662 | |
789 | |
663 | unsigned int eio_nthreads (void) |
790 | unsigned int ecb_cold |
|
|
791 | eio_nthreads (void) |
664 | { |
792 | { |
665 | return etp_nthreads (); |
793 | return etp_nthreads (); |
666 | } |
794 | } |
667 | |
795 | |
|
|
796 | void ecb_cold |
668 | void eio_set_max_poll_time (double nseconds) |
797 | eio_set_max_poll_time (double nseconds) |
669 | { |
798 | { |
670 | etp_set_max_poll_time (nseconds); |
799 | etp_set_max_poll_time (nseconds); |
671 | } |
800 | } |
672 | |
801 | |
|
|
802 | void ecb_cold |
673 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
803 | eio_set_max_poll_reqs (unsigned int maxreqs) |
674 | { |
804 | { |
675 | etp_set_max_poll_reqs (maxreqs); |
805 | etp_set_max_poll_reqs (maxreqs); |
676 | } |
806 | } |
677 | |
807 | |
|
|
808 | void ecb_cold |
678 | void eio_set_max_idle (unsigned int nthreads) |
809 | eio_set_max_idle (unsigned int nthreads) |
679 | { |
810 | { |
680 | etp_set_max_idle (nthreads); |
811 | etp_set_max_idle (nthreads); |
681 | } |
812 | } |
682 | |
813 | |
|
|
814 | void ecb_cold |
|
|
815 | eio_set_idle_timeout (unsigned int seconds) |
|
|
816 | { |
|
|
817 | etp_set_idle_timeout (seconds); |
|
|
818 | } |
|
|
819 | |
|
|
820 | void ecb_cold |
683 | void eio_set_min_parallel (unsigned int nthreads) |
821 | eio_set_min_parallel (unsigned int nthreads) |
684 | { |
822 | { |
685 | etp_set_min_parallel (nthreads); |
823 | etp_set_min_parallel (nthreads); |
686 | } |
824 | } |
687 | |
825 | |
|
|
826 | void ecb_cold |
688 | void eio_set_max_parallel (unsigned int nthreads) |
827 | eio_set_max_parallel (unsigned int nthreads) |
689 | { |
828 | { |
690 | etp_set_max_parallel (nthreads); |
829 | etp_set_max_parallel (nthreads); |
691 | } |
830 | } |
692 | |
831 | |
693 | int eio_poll (void) |
832 | int eio_poll (void) |
… | |
… | |
697 | |
836 | |
698 | /*****************************************************************************/ |
837 | /*****************************************************************************/ |
699 | /* work around various missing functions */ |
838 | /* work around various missing functions */ |
700 | |
839 | |
701 | #if !HAVE_PREADWRITE |
840 | #if !HAVE_PREADWRITE |
|
|
841 | # undef pread |
|
|
842 | # undef pwrite |
702 | # define pread eio__pread |
843 | # define pread eio__pread |
703 | # define pwrite eio__pwrite |
844 | # define pwrite eio__pwrite |
704 | |
|
|
705 | /* |
|
|
706 | * make our pread/pwrite safe against themselves, but not against |
|
|
707 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
708 | * but that's your problem, not mine. |
|
|
709 | */ |
|
|
710 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
711 | |
845 | |
712 | static ssize_t |
846 | static ssize_t |
713 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
847 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
714 | { |
848 | { |
715 | ssize_t res; |
849 | ssize_t res; |
… | |
… | |
733 | |
867 | |
734 | X_LOCK (preadwritelock); |
868 | X_LOCK (preadwritelock); |
735 | ooffset = lseek (fd, 0, SEEK_CUR); |
869 | ooffset = lseek (fd, 0, SEEK_CUR); |
736 | lseek (fd, offset, SEEK_SET); |
870 | lseek (fd, offset, SEEK_SET); |
737 | res = write (fd, buf, count); |
871 | res = write (fd, buf, count); |
738 | lseek (fd, offset, SEEK_SET); |
872 | lseek (fd, ooffset, SEEK_SET); |
739 | X_UNLOCK (preadwritelock); |
873 | X_UNLOCK (preadwritelock); |
740 | |
874 | |
741 | return res; |
875 | return res; |
742 | } |
876 | } |
743 | #endif |
877 | #endif |
744 | |
878 | |
745 | #ifndef HAVE_FUTIMES |
879 | #ifndef HAVE_UTIMES |
746 | |
880 | |
|
|
881 | # undef utimes |
747 | # define utimes(path,times) eio__utimes (path, times) |
882 | # define utimes(path,times) eio__utimes (path, times) |
748 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
749 | |
883 | |
750 | static int |
884 | static int |
751 | eio__utimes (const char *filename, const struct timeval times[2]) |
885 | eio__utimes (const char *filename, const struct timeval times[2]) |
752 | { |
886 | { |
753 | if (times) |
887 | if (times) |
… | |
… | |
761 | } |
895 | } |
762 | else |
896 | else |
763 | return utime (filename, 0); |
897 | return utime (filename, 0); |
764 | } |
898 | } |
765 | |
899 | |
|
|
900 | #endif |
|
|
901 | |
|
|
902 | #ifndef HAVE_FUTIMES |
|
|
903 | |
|
|
904 | # undef futimes |
|
|
905 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
906 | |
|
|
907 | static int |
766 | static int eio__futimes (int fd, const struct timeval tv[2]) |
908 | eio__futimes (int fd, const struct timeval tv[2]) |
767 | { |
909 | { |
768 | errno = ENOSYS; |
910 | errno = ENOSYS; |
769 | return -1; |
911 | return -1; |
770 | } |
912 | } |
771 | |
913 | |
772 | #endif |
914 | #endif |
773 | |
915 | |
774 | #if !HAVE_FDATASYNC |
916 | #if !HAVE_FDATASYNC |
|
|
917 | # undef fdatasync |
775 | # define fdatasync fsync |
918 | # define fdatasync(fd) fsync (fd) |
776 | #endif |
919 | #endif |
|
|
920 | |
|
|
921 | /* sync_file_range always needs emulation */ |
|
|
922 | static int |
|
|
923 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
|
|
924 | { |
|
|
925 | #if HAVE_SYNC_FILE_RANGE |
|
|
926 | int res; |
|
|
927 | |
|
|
928 | if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE |
|
|
929 | || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE |
|
|
930 | || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) |
|
|
931 | { |
|
|
932 | flags = 0 |
|
|
933 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) |
|
|
934 | | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) |
|
|
935 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); |
|
|
936 | } |
|
|
937 | |
|
|
938 | res = sync_file_range (fd, offset, nbytes, flags); |
|
|
939 | |
|
|
940 | if (!res || errno != ENOSYS) |
|
|
941 | return res; |
|
|
942 | #endif |
|
|
943 | |
|
|
944 | /* even though we could play tricks with the flags, it's better to always |
|
|
945 | * call fdatasync, as that matches the expectation of its users best */ |
|
|
946 | return fdatasync (fd); |
|
|
947 | } |
777 | |
948 | |
778 | #if !HAVE_READAHEAD |
949 | #if !HAVE_READAHEAD |
|
|
950 | # undef readahead |
779 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
951 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
780 | |
952 | |
781 | static ssize_t |
953 | static ssize_t |
782 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
954 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
783 | { |
955 | { |
… | |
… | |
801 | |
973 | |
802 | /* sendfile always needs emulation */ |
974 | /* sendfile always needs emulation */ |
803 | static ssize_t |
975 | static ssize_t |
804 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
976 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
805 | { |
977 | { |
|
|
978 | ssize_t written = 0; |
806 | ssize_t res; |
979 | ssize_t res; |
807 | |
980 | |
808 | if (!count) |
981 | if (!count) |
809 | return 0; |
982 | return 0; |
810 | |
983 | |
|
|
984 | for (;;) |
|
|
985 | { |
811 | #if HAVE_SENDFILE |
986 | #if HAVE_SENDFILE |
812 | # if __linux |
987 | # if __linux |
|
|
988 | off_t soffset = offset; |
813 | res = sendfile (ofd, ifd, &offset, count); |
989 | res = sendfile (ofd, ifd, &soffset, count); |
814 | |
990 | |
815 | # elif __freebsd |
991 | # elif __FreeBSD__ |
816 | /* |
992 | /* |
817 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
993 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
818 | * wasted on making it similar to other I/O functions. |
994 | * wasted on making it similar to other I/O functions. |
819 | */ |
995 | */ |
820 | { |
|
|
821 | off_t sbytes; |
996 | off_t sbytes; |
822 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
997 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
823 | |
998 | |
824 | if (res < 0 && sbytes) |
999 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
825 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1000 | /* freebsd' sendfile will return 0 on success */ |
|
|
1001 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
1002 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
1003 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
826 | res = sbytes; |
1004 | res = sbytes; |
827 | } |
1005 | #endif |
|
|
1006 | |
|
|
1007 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
1008 | if (sbytes) |
|
|
1009 | res = sbytes; |
|
|
1010 | |
|
|
1011 | # elif defined (__APPLE__) && 0 /* broken, as everything on os x */ |
|
|
1012 | off_t sbytes = count; |
|
|
1013 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
1014 | |
|
|
1015 | /* according to the manpage, sbytes is always valid */ |
|
|
1016 | if (sbytes) |
|
|
1017 | res = sbytes; |
828 | |
1018 | |
829 | # elif __hpux |
1019 | # elif __hpux |
830 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1020 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
831 | |
1021 | |
832 | # elif __solaris |
1022 | # elif __solaris |
833 | { |
|
|
834 | struct sendfilevec vec; |
1023 | struct sendfilevec vec; |
835 | size_t sbytes; |
1024 | size_t sbytes; |
836 | |
1025 | |
837 | vec.sfv_fd = ifd; |
1026 | vec.sfv_fd = ifd; |
838 | vec.sfv_flag = 0; |
1027 | vec.sfv_flag = 0; |
839 | vec.sfv_off = offset; |
1028 | vec.sfv_off = offset; |
840 | vec.sfv_len = count; |
1029 | vec.sfv_len = count; |
841 | |
1030 | |
842 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1031 | res = sendfilev (ofd, &vec, 1, &sbytes); |
843 | |
1032 | |
844 | if (res < 0 && sbytes) |
1033 | if (res < 0 && sbytes) |
845 | res = sbytes; |
1034 | res = sbytes; |
846 | } |
|
|
847 | |
1035 | |
848 | # endif |
1036 | # endif |
|
|
1037 | |
|
|
1038 | #elif defined (_WIN32) |
|
|
1039 | /* does not work, just for documentation of what would need to be done */ |
|
|
1040 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1041 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1042 | /* has no way to get an independent handle to the same file description */ |
|
|
1043 | HANDLE h = TO_SOCKET (ifd); |
|
|
1044 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1045 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1046 | |
849 | #else |
1047 | #else |
850 | res = -1; |
1048 | res = -1; |
851 | errno = ENOSYS; |
1049 | errno = ENOSYS; |
852 | #endif |
1050 | #endif |
853 | |
1051 | |
|
|
1052 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1053 | if (res <= 128 * 1024 * 1024) |
|
|
1054 | { |
|
|
1055 | if (res > 0) |
|
|
1056 | written += res; |
|
|
1057 | |
|
|
1058 | if (written) |
|
|
1059 | return written; |
|
|
1060 | |
|
|
1061 | break; |
|
|
1062 | } |
|
|
1063 | else |
|
|
1064 | { |
|
|
1065 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1066 | written += res; |
|
|
1067 | offset += res; |
|
|
1068 | count -= res; |
|
|
1069 | |
|
|
1070 | if (!count) |
|
|
1071 | return written; |
|
|
1072 | } |
|
|
1073 | } |
|
|
1074 | |
854 | if (res < 0 |
1075 | if (res < 0 |
855 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1076 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1077 | /* BSDs */ |
|
|
1078 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1079 | || errno == ENOTSUP |
|
|
1080 | #endif |
|
|
1081 | || errno == EOPNOTSUPP /* BSDs */ |
856 | #if __solaris |
1082 | #if __solaris |
857 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1083 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
858 | #endif |
1084 | #endif |
859 | ) |
1085 | ) |
860 | ) |
1086 | ) |
… | |
… | |
891 | } |
1117 | } |
892 | |
1118 | |
893 | return res; |
1119 | return res; |
894 | } |
1120 | } |
895 | |
1121 | |
|
|
1122 | #ifdef PAGESIZE |
|
|
1123 | # define eio_pagesize() PAGESIZE |
|
|
1124 | #else |
|
|
1125 | static intptr_t |
|
|
1126 | eio_pagesize (void) |
|
|
1127 | { |
|
|
1128 | static intptr_t page; |
|
|
1129 | |
|
|
1130 | if (!page) |
|
|
1131 | page = sysconf (_SC_PAGESIZE); |
|
|
1132 | |
|
|
1133 | return page; |
|
|
1134 | } |
|
|
1135 | #endif |
|
|
1136 | |
|
|
1137 | static void |
|
|
1138 | eio_page_align (void **addr, size_t *length) |
|
|
1139 | { |
|
|
1140 | intptr_t mask = eio_pagesize () - 1; |
|
|
1141 | |
|
|
1142 | /* round down addr */ |
|
|
1143 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1144 | |
|
|
1145 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1146 | *length += adj; |
|
|
1147 | |
|
|
1148 | /* round up length */ |
|
|
1149 | *length = (*length + mask) & ~mask; |
|
|
1150 | } |
|
|
1151 | |
|
|
1152 | #if !_POSIX_MEMLOCK |
|
|
1153 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1154 | #else |
|
|
1155 | |
|
|
1156 | static int |
|
|
1157 | eio__mlockall (int flags) |
|
|
1158 | { |
|
|
1159 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1160 | extern int mallopt (int, int); |
|
|
1161 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1162 | #endif |
|
|
1163 | |
|
|
1164 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1165 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1166 | { |
|
|
1167 | flags = 0 |
|
|
1168 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1169 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1170 | } |
|
|
1171 | |
|
|
1172 | return mlockall (flags); |
|
|
1173 | } |
|
|
1174 | #endif |
|
|
1175 | |
|
|
1176 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1177 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1178 | #else |
|
|
1179 | |
|
|
1180 | static int |
|
|
1181 | eio__mlock (void *addr, size_t length) |
|
|
1182 | { |
|
|
1183 | eio_page_align (&addr, &length); |
|
|
1184 | |
|
|
1185 | return mlock (addr, length); |
|
|
1186 | } |
|
|
1187 | |
|
|
1188 | #endif |
|
|
1189 | |
|
|
1190 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1191 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1192 | #else |
|
|
1193 | |
|
|
1194 | static int |
|
|
1195 | eio__msync (void *mem, size_t len, int flags) |
|
|
1196 | { |
|
|
1197 | eio_page_align (&mem, &len); |
|
|
1198 | |
|
|
1199 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1200 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1201 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1202 | { |
|
|
1203 | flags = 0 |
|
|
1204 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1205 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1206 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1207 | } |
|
|
1208 | |
|
|
1209 | return msync (mem, len, flags); |
|
|
1210 | } |
|
|
1211 | |
|
|
1212 | #endif |
|
|
1213 | |
|
|
1214 | static int |
|
|
1215 | eio__mtouch (eio_req *req) |
|
|
1216 | { |
|
|
1217 | void *mem = req->ptr2; |
|
|
1218 | size_t len = req->size; |
|
|
1219 | int flags = req->int1; |
|
|
1220 | |
|
|
1221 | eio_page_align (&mem, &len); |
|
|
1222 | |
|
|
1223 | { |
|
|
1224 | intptr_t addr = (intptr_t)mem; |
|
|
1225 | intptr_t end = addr + len; |
|
|
1226 | intptr_t page = eio_pagesize (); |
|
|
1227 | |
|
|
1228 | if (addr < end) |
|
|
1229 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1230 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1231 | else |
|
|
1232 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1233 | } |
|
|
1234 | |
|
|
1235 | return 0; |
|
|
1236 | } |
|
|
1237 | |
|
|
1238 | /*****************************************************************************/ |
|
|
1239 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1240 | |
|
|
1241 | static void |
|
|
1242 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1243 | { |
|
|
1244 | char *rel = req->ptr1; |
|
|
1245 | char *res; |
|
|
1246 | char *tmp1, *tmp2; |
|
|
1247 | #if SYMLOOP_MAX > 32 |
|
|
1248 | int links = SYMLOOP_MAX; |
|
|
1249 | #else |
|
|
1250 | int links = 32; |
|
|
1251 | #endif |
|
|
1252 | |
|
|
1253 | req->result = -1; |
|
|
1254 | |
|
|
1255 | errno = EINVAL; |
|
|
1256 | if (!rel) |
|
|
1257 | return; |
|
|
1258 | |
|
|
1259 | errno = ENOENT; |
|
|
1260 | if (!*rel) |
|
|
1261 | return; |
|
|
1262 | |
|
|
1263 | if (!req->ptr2) |
|
|
1264 | { |
|
|
1265 | X_LOCK (wrklock); |
|
|
1266 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1267 | X_UNLOCK (wrklock); |
|
|
1268 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1269 | |
|
|
1270 | errno = ENOMEM; |
|
|
1271 | if (!req->ptr2) |
|
|
1272 | return; |
|
|
1273 | } |
|
|
1274 | |
|
|
1275 | res = req->ptr2; |
|
|
1276 | tmp1 = res + PATH_MAX; |
|
|
1277 | tmp2 = tmp1 + PATH_MAX; |
|
|
1278 | |
|
|
1279 | if (*rel != '/') |
|
|
1280 | { |
|
|
1281 | if (!getcwd (res, PATH_MAX)) |
|
|
1282 | return; |
|
|
1283 | |
|
|
1284 | if (res [1]) /* only use if not / */ |
|
|
1285 | res += strlen (res); |
|
|
1286 | } |
|
|
1287 | |
|
|
1288 | while (*rel) |
|
|
1289 | { |
|
|
1290 | ssize_t len, linklen; |
|
|
1291 | char *beg = rel; |
|
|
1292 | |
|
|
1293 | while (*rel && *rel != '/') |
|
|
1294 | ++rel; |
|
|
1295 | |
|
|
1296 | len = rel - beg; |
|
|
1297 | |
|
|
1298 | if (!len) /* skip slashes */ |
|
|
1299 | { |
|
|
1300 | ++rel; |
|
|
1301 | continue; |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | if (beg [0] == '.') |
|
|
1305 | { |
|
|
1306 | if (len == 1) |
|
|
1307 | continue; /* . - nop */ |
|
|
1308 | |
|
|
1309 | if (beg [1] == '.' && len == 2) |
|
|
1310 | { |
|
|
1311 | /* .. - back up one component, if possible */ |
|
|
1312 | |
|
|
1313 | while (res != req->ptr2) |
|
|
1314 | if (*--res == '/') |
|
|
1315 | break; |
|
|
1316 | |
|
|
1317 | continue; |
|
|
1318 | } |
|
|
1319 | } |
|
|
1320 | |
|
|
1321 | errno = ENAMETOOLONG; |
|
|
1322 | if (res + 1 + len + 1 >= tmp1) |
|
|
1323 | return; |
|
|
1324 | |
|
|
1325 | /* copy one component */ |
|
|
1326 | *res = '/'; |
|
|
1327 | memcpy (res + 1, beg, len); |
|
|
1328 | |
|
|
1329 | /* zero-terminate, for readlink */ |
|
|
1330 | res [len + 1] = 0; |
|
|
1331 | |
|
|
1332 | /* now check if it's a symlink */ |
|
|
1333 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1334 | |
|
|
1335 | if (linklen < 0) |
|
|
1336 | { |
|
|
1337 | if (errno != EINVAL) |
|
|
1338 | return; |
|
|
1339 | |
|
|
1340 | /* it's a normal directory. hopefully */ |
|
|
1341 | res += len + 1; |
|
|
1342 | } |
|
|
1343 | else |
|
|
1344 | { |
|
|
1345 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1346 | int rellen = strlen (rel); |
|
|
1347 | |
|
|
1348 | errno = ENAMETOOLONG; |
|
|
1349 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1350 | return; |
|
|
1351 | |
|
|
1352 | if (*tmp1 == '/') |
|
|
1353 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1354 | |
|
|
1355 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1356 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1357 | tmp2 [linklen] = '/'; |
|
|
1358 | memcpy (tmp2, tmp1, linklen); |
|
|
1359 | |
|
|
1360 | rel = tmp2; |
|
|
1361 | } |
|
|
1362 | } |
|
|
1363 | |
|
|
1364 | /* special case for the lone root path */ |
|
|
1365 | if (res == req->ptr2) |
|
|
1366 | *res++ = '/'; |
|
|
1367 | |
|
|
1368 | req->result = res - (char *)req->ptr2; |
|
|
1369 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
|
|
1370 | } |
|
|
1371 | |
|
|
1372 | static signed char |
|
|
1373 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
|
|
1374 | { |
|
|
1375 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
|
|
1376 | : a->inode < b->inode ? -1 |
|
|
1377 | : a->inode > b->inode ? 1 |
|
|
1378 | : 0; |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1382 | |
|
|
1383 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1384 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
|
|
1385 | |
|
|
1386 | static void |
|
|
1387 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
|
|
1388 | { |
|
|
1389 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
|
|
1390 | unsigned char *bit = bits; |
|
|
1391 | |
|
|
1392 | assert (CHAR_BIT == 8); |
|
|
1393 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1394 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1395 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1396 | |
|
|
1397 | if (size <= EIO_SORT_FAST) |
|
|
1398 | return; |
|
|
1399 | |
|
|
1400 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1401 | /* try to take endianness into account, as well as differences in ino_t sizes */ |
|
|
1402 | /* inode_bits must contain all inodes ORed together */ |
|
|
1403 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1404 | { |
|
|
1405 | ino_t endianness; |
|
|
1406 | int i, j; |
|
|
1407 | |
|
|
1408 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1409 | for (i = 0; i < sizeof (ino_t); ++i) |
|
|
1410 | ((unsigned char *)&endianness)[i] = i; |
|
|
1411 | |
|
|
1412 | *bit++ = 0; |
|
|
1413 | |
|
|
1414 | for (i = 0; i < sizeof (ino_t); ++i) |
|
|
1415 | { |
|
|
1416 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1417 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1418 | endianness >>= 8; |
|
|
1419 | |
|
|
1420 | for (j = 0; j < 8; ++j) |
|
|
1421 | if (inode_bits & (((ino_t)1) << (i * 8 + j))) |
|
|
1422 | *bit++ = offs + j; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | for (j = 0; j < 8; ++j) |
|
|
1426 | if (score_bits & (1 << j)) |
|
|
1427 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1428 | } |
|
|
1429 | |
|
|
1430 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1431 | { |
|
|
1432 | eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; |
|
|
1433 | eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; |
|
|
1434 | unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; |
|
|
1435 | int stk_idx = 0; |
|
|
1436 | |
|
|
1437 | base_stk [stk_idx] = dents; |
|
|
1438 | end_stk [stk_idx] = dents + size; |
|
|
1439 | bit_stk [stk_idx] = bit - 1; |
|
|
1440 | |
|
|
1441 | do |
|
|
1442 | { |
|
|
1443 | base = base_stk [stk_idx]; |
|
|
1444 | end = end_stk [stk_idx]; |
|
|
1445 | bit = bit_stk [stk_idx]; |
|
|
1446 | |
|
|
1447 | for (;;) |
|
|
1448 | { |
|
|
1449 | unsigned char O = *bit >> 3; |
|
|
1450 | unsigned char M = 1 << (*bit & 7); |
|
|
1451 | |
|
|
1452 | eio_dirent *a = base; |
|
|
1453 | eio_dirent *b = end; |
|
|
1454 | |
|
|
1455 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1456 | break; |
|
|
1457 | |
|
|
1458 | /* now bit-partition the array on the bit */ |
|
|
1459 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1460 | /* partition algos found in the literature */ |
|
|
1461 | do |
|
|
1462 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1463 | ++a; |
|
|
1464 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1465 | { |
|
|
1466 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1467 | ++a; |
|
|
1468 | } |
|
|
1469 | while (b > a); |
|
|
1470 | |
|
|
1471 | /* next bit, or stop, if no bits left in this path */ |
|
|
1472 | if (!*--bit) |
|
|
1473 | break; |
|
|
1474 | |
|
|
1475 | base_stk [stk_idx] = a; |
|
|
1476 | end_stk [stk_idx] = end; |
|
|
1477 | bit_stk [stk_idx] = bit; |
|
|
1478 | ++stk_idx; |
|
|
1479 | |
|
|
1480 | end = a; |
|
|
1481 | } |
|
|
1482 | } |
|
|
1483 | while (stk_idx--); |
|
|
1484 | } |
|
|
1485 | } |
|
|
1486 | |
|
|
1487 | static void |
|
|
1488 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1489 | { |
|
|
1490 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1491 | { |
|
|
1492 | int i; |
|
|
1493 | eio_dirent *min = dents; |
|
|
1494 | |
|
|
1495 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1496 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1497 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1498 | min = &dents [i]; |
|
|
1499 | |
|
|
1500 | /* swap elements 0 and j (minimum) */ |
|
|
1501 | { |
|
|
1502 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1503 | } |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
|
|
1507 | { |
|
|
1508 | eio_dirent *i, *j; |
|
|
1509 | |
|
|
1510 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1511 | { |
|
|
1512 | eio_dirent value = *i; |
|
|
1513 | |
|
|
1514 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1515 | j [1] = j [0]; |
|
|
1516 | |
|
|
1517 | j [1] = value; |
|
|
1518 | } |
|
|
1519 | } |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | static void |
|
|
1523 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
|
|
1524 | { |
|
|
1525 | if (size <= 1) |
|
|
1526 | return; /* our insertion sort relies on size > 0 */ |
|
|
1527 | |
|
|
1528 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
|
|
1529 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1530 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
|
|
1531 | |
|
|
1532 | /* use an insertion sort at the end, or for small arrays, */ |
|
|
1533 | /* as insertion sort is more efficient for small partitions */ |
|
|
1534 | eio_dent_insertion_sort (dents, size); |
|
|
1535 | } |
|
|
1536 | |
896 | /* read a full directory */ |
1537 | /* read a full directory */ |
897 | static void |
1538 | static void |
898 | eio__scandir (eio_req *req, etp_worker *self) |
1539 | eio__scandir (eio_req *req, etp_worker *self) |
899 | { |
1540 | { |
900 | DIR *dirp; |
1541 | DIR *dirp; |
901 | EIO_STRUCT_DIRENT *entp; |
1542 | EIO_STRUCT_DIRENT *entp; |
902 | char *name, *names; |
1543 | char *name, *names; |
903 | int memlen = 4096; |
1544 | int namesalloc = 4096; |
904 | int memofs = 0; |
1545 | int namesoffs = 0; |
|
|
1546 | int flags = req->int1; |
|
|
1547 | eio_dirent *dents = 0; |
|
|
1548 | int dentalloc = 128; |
905 | int res = 0; |
1549 | int dentoffs = 0; |
|
|
1550 | ino_t inode_bits = 0; |
|
|
1551 | |
|
|
1552 | req->result = -1; |
|
|
1553 | |
|
|
1554 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1555 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
906 | |
1556 | |
907 | X_LOCK (wrklock); |
1557 | X_LOCK (wrklock); |
|
|
1558 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
908 | self->dirp = dirp = opendir (req->ptr1); |
1559 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1560 | |
909 | req->flags |= EIO_FLAG_PTR2_FREE; |
1561 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1562 | free (req->ptr1); |
|
|
1563 | |
|
|
1564 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
|
|
1565 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
910 | req->ptr2 = names = malloc (memlen); |
1566 | req->ptr2 = names = malloc (namesalloc); |
911 | X_UNLOCK (wrklock); |
1567 | X_UNLOCK (wrklock); |
912 | |
1568 | |
913 | if (dirp && names) |
1569 | if (dirp && names && (!flags || dents)) |
914 | for (;;) |
1570 | for (;;) |
915 | { |
1571 | { |
916 | errno = 0; |
1572 | errno = 0; |
917 | entp = readdir (dirp); |
1573 | entp = readdir (dirp); |
918 | |
1574 | |
919 | if (!entp) |
1575 | if (!entp) |
|
|
1576 | { |
|
|
1577 | if (errno) |
|
|
1578 | break; |
|
|
1579 | |
|
|
1580 | /* sort etc. */ |
|
|
1581 | req->int1 = flags; |
|
|
1582 | req->result = dentoffs; |
|
|
1583 | |
|
|
1584 | if (flags & EIO_READDIR_STAT_ORDER) |
|
|
1585 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
|
|
1586 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1587 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1588 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1589 | else |
|
|
1590 | { |
|
|
1591 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1592 | eio_dirent *oth = dents + dentoffs; |
|
|
1593 | eio_dirent *dir = dents; |
|
|
1594 | |
|
|
1595 | /* now partition dirs to the front, and non-dirs to the back */ |
|
|
1596 | /* by walking from both sides and swapping if necessary */ |
|
|
1597 | while (oth > dir) |
|
|
1598 | { |
|
|
1599 | if (dir->type == EIO_DT_DIR) |
|
|
1600 | ++dir; |
|
|
1601 | else if ((--oth)->type == EIO_DT_DIR) |
|
|
1602 | { |
|
|
1603 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1604 | |
|
|
1605 | ++dir; |
|
|
1606 | } |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1610 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1611 | } |
|
|
1612 | |
920 | break; |
1613 | break; |
|
|
1614 | } |
921 | |
1615 | |
|
|
1616 | /* now add the entry to our list(s) */ |
922 | name = entp->d_name; |
1617 | name = entp->d_name; |
923 | |
1618 | |
|
|
1619 | /* skip . and .. entries */ |
924 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1620 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
925 | { |
1621 | { |
926 | int len = strlen (name) + 1; |
1622 | int len = D_NAMLEN (entp) + 1; |
927 | |
1623 | |
928 | res++; |
1624 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
929 | |
|
|
930 | while (memofs + len > memlen) |
|
|
931 | { |
1625 | { |
932 | memlen *= 2; |
1626 | namesalloc *= 2; |
933 | X_LOCK (wrklock); |
1627 | X_LOCK (wrklock); |
934 | req->ptr2 = names = realloc (names, memlen); |
1628 | req->ptr2 = names = realloc (names, namesalloc); |
935 | X_UNLOCK (wrklock); |
1629 | X_UNLOCK (wrklock); |
936 | |
1630 | |
937 | if (!names) |
1631 | if (!names) |
938 | break; |
1632 | break; |
939 | } |
1633 | } |
940 | |
1634 | |
941 | memcpy (names + memofs, name, len); |
1635 | memcpy (names + namesoffs, name, len); |
|
|
1636 | |
|
|
1637 | if (dents) |
|
|
1638 | { |
|
|
1639 | struct eio_dirent *ent; |
|
|
1640 | |
|
|
1641 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1642 | { |
|
|
1643 | dentalloc *= 2; |
|
|
1644 | X_LOCK (wrklock); |
|
|
1645 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1646 | X_UNLOCK (wrklock); |
|
|
1647 | |
|
|
1648 | if (!dents) |
|
|
1649 | break; |
|
|
1650 | } |
|
|
1651 | |
|
|
1652 | ent = dents + dentoffs; |
|
|
1653 | |
|
|
1654 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1655 | ent->namelen = len - 1; |
|
|
1656 | ent->inode = D_INO (entp); |
|
|
1657 | |
|
|
1658 | inode_bits |= ent->inode; |
|
|
1659 | |
|
|
1660 | switch (D_TYPE (entp)) |
|
|
1661 | { |
|
|
1662 | default: |
|
|
1663 | ent->type = EIO_DT_UNKNOWN; |
|
|
1664 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1665 | break; |
|
|
1666 | |
|
|
1667 | #ifdef DT_FIFO |
|
|
1668 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1669 | #endif |
|
|
1670 | #ifdef DT_CHR |
|
|
1671 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1672 | #endif |
|
|
1673 | #ifdef DT_MPC |
|
|
1674 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1675 | #endif |
|
|
1676 | #ifdef DT_DIR |
|
|
1677 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1678 | #endif |
|
|
1679 | #ifdef DT_NAM |
|
|
1680 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1681 | #endif |
|
|
1682 | #ifdef DT_BLK |
|
|
1683 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1684 | #endif |
|
|
1685 | #ifdef DT_MPB |
|
|
1686 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1687 | #endif |
|
|
1688 | #ifdef DT_REG |
|
|
1689 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1690 | #endif |
|
|
1691 | #ifdef DT_NWK |
|
|
1692 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1693 | #endif |
|
|
1694 | #ifdef DT_CMP |
|
|
1695 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1696 | #endif |
|
|
1697 | #ifdef DT_LNK |
|
|
1698 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1699 | #endif |
|
|
1700 | #ifdef DT_SOCK |
|
|
1701 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1702 | #endif |
|
|
1703 | #ifdef DT_DOOR |
|
|
1704 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1705 | #endif |
|
|
1706 | #ifdef DT_WHT |
|
|
1707 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1708 | #endif |
|
|
1709 | } |
|
|
1710 | |
|
|
1711 | ent->score = 7; |
|
|
1712 | |
|
|
1713 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1714 | { |
|
|
1715 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1716 | { |
|
|
1717 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1718 | ent->score = 1; |
|
|
1719 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1720 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1721 | } |
|
|
1722 | else if (ent->type == EIO_DT_DIR) |
|
|
1723 | ent->score = 0; |
|
|
1724 | } |
|
|
1725 | } |
|
|
1726 | |
942 | memofs += len; |
1727 | namesoffs += len; |
|
|
1728 | ++dentoffs; |
|
|
1729 | } |
|
|
1730 | |
|
|
1731 | if (EIO_CANCELLED (req)) |
|
|
1732 | { |
|
|
1733 | errno = ECANCELED; |
|
|
1734 | break; |
943 | } |
1735 | } |
944 | } |
1736 | } |
945 | |
|
|
946 | if (errno) |
|
|
947 | res = -1; |
|
|
948 | |
|
|
949 | req->result = res; |
|
|
950 | } |
1737 | } |
951 | |
1738 | |
952 | /*****************************************************************************/ |
1739 | /*****************************************************************************/ |
953 | |
1740 | |
954 | #define ALLOC(len) \ |
1741 | #define ALLOC(len) \ |
… | |
… | |
986 | if (req) |
1773 | if (req) |
987 | break; |
1774 | break; |
988 | |
1775 | |
989 | ++idle; |
1776 | ++idle; |
990 | |
1777 | |
991 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1778 | ts.tv_sec = time (0) + idle_timeout; |
992 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1779 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
993 | { |
1780 | { |
994 | if (idle > max_idle) |
1781 | if (idle > max_idle) |
995 | { |
1782 | { |
996 | --idle; |
1783 | --idle; |
… | |
… | |
1039 | return 0; |
1826 | return 0; |
1040 | } |
1827 | } |
1041 | |
1828 | |
1042 | /*****************************************************************************/ |
1829 | /*****************************************************************************/ |
1043 | |
1830 | |
|
|
1831 | int ecb_cold |
1044 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1832 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1045 | { |
1833 | { |
1046 | return etp_init (want_poll, done_poll); |
1834 | return etp_init (want_poll, done_poll); |
1047 | } |
1835 | } |
1048 | |
1836 | |
|
|
1837 | ecb_inline void |
1049 | static void eio_api_destroy (eio_req *req) |
1838 | eio_api_destroy (eio_req *req) |
1050 | { |
1839 | { |
1051 | free (req); |
1840 | free (req); |
1052 | } |
1841 | } |
1053 | |
1842 | |
1054 | #define REQ(rtype) \ |
1843 | #define REQ(rtype) \ |
… | |
… | |
1073 | { \ |
1862 | { \ |
1074 | eio_api_destroy (req); \ |
1863 | eio_api_destroy (req); \ |
1075 | return 0; \ |
1864 | return 0; \ |
1076 | } |
1865 | } |
1077 | |
1866 | |
|
|
1867 | static void |
1078 | static void eio_execute (etp_worker *self, eio_req *req) |
1868 | eio_execute (etp_worker *self, eio_req *req) |
1079 | { |
1869 | { |
1080 | errno = 0; |
|
|
1081 | |
|
|
1082 | switch (req->type) |
1870 | switch (req->type) |
1083 | { |
1871 | { |
1084 | case EIO_READ: ALLOC (req->size); |
1872 | case EIO_READ: ALLOC (req->size); |
1085 | req->result = req->offs >= 0 |
1873 | req->result = req->offs >= 0 |
1086 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1874 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1097 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1885 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1098 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1886 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1099 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1887 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1100 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1888 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1101 | |
1889 | |
|
|
1890 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1891 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1892 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1893 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1894 | |
1102 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1895 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1103 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1896 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1104 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1897 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1105 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1898 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1106 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
1899 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
… | |
… | |
1113 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1906 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1114 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1907 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1115 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1908 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1116 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1909 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1117 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1910 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1118 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1911 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1119 | |
1912 | |
|
|
1913 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
1914 | |
1120 | case EIO_READLINK: ALLOC (NAME_MAX); |
1915 | case EIO_READLINK: ALLOC (PATH_MAX); |
1121 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1916 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1122 | |
1917 | |
1123 | case EIO_SYNC: req->result = 0; sync (); break; |
1918 | case EIO_SYNC: req->result = 0; sync (); break; |
1124 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1919 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1125 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1920 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
1921 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
1922 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
|
|
1923 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
1924 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
|
|
1925 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1126 | |
1926 | |
1127 | case EIO_READDIR: eio__scandir (req, self); break; |
1927 | case EIO_READDIR: eio__scandir (req, self); break; |
1128 | |
1928 | |
1129 | case EIO_BUSY: |
1929 | case EIO_BUSY: |
1130 | #ifdef _WIN32 |
1930 | #ifdef _WIN32 |
1131 | Sleep (req->nv1 * 1000.); |
1931 | Sleep (req->nv1 * 1e3); |
1132 | #else |
1932 | #else |
1133 | { |
1933 | { |
1134 | struct timeval tv; |
1934 | struct timeval tv; |
1135 | |
1935 | |
1136 | tv.tv_sec = req->nv1; |
1936 | tv.tv_sec = req->nv1; |
1137 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1937 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1138 | |
1938 | |
1139 | req->result = select (0, 0, 0, 0, &tv); |
1939 | req->result = select (0, 0, 0, 0, &tv); |
1140 | } |
1940 | } |
1141 | #endif |
1941 | #endif |
1142 | break; |
1942 | break; |
… | |
… | |
1157 | times = tv; |
1957 | times = tv; |
1158 | } |
1958 | } |
1159 | else |
1959 | else |
1160 | times = 0; |
1960 | times = 0; |
1161 | |
1961 | |
1162 | |
|
|
1163 | req->result = req->type == EIO_FUTIME |
1962 | req->result = req->type == EIO_FUTIME |
1164 | ? futimes (req->int1, times) |
1963 | ? futimes (req->int1, times) |
1165 | : utimes (req->ptr1, times); |
1964 | : utimes (req->ptr1, times); |
1166 | } |
1965 | } |
|
|
1966 | break; |
1167 | |
1967 | |
1168 | case EIO_GROUP: |
1968 | case EIO_GROUP: |
|
|
1969 | abort (); /* handled in eio_request */ |
|
|
1970 | |
1169 | case EIO_NOP: |
1971 | case EIO_NOP: |
1170 | req->result = 0; |
1972 | req->result = 0; |
1171 | break; |
1973 | break; |
1172 | |
1974 | |
1173 | case EIO_CUSTOM: |
1975 | case EIO_CUSTOM: |
1174 | req->feed (req); |
1976 | req->feed (req); |
1175 | break; |
1977 | break; |
1176 | |
1978 | |
1177 | default: |
1979 | default: |
|
|
1980 | errno = ENOSYS; |
1178 | req->result = -1; |
1981 | req->result = -1; |
1179 | break; |
1982 | break; |
1180 | } |
1983 | } |
1181 | |
1984 | |
1182 | req->errorno = errno; |
1985 | req->errorno = errno; |
… | |
… | |
1202 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
2005 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1203 | { |
2006 | { |
1204 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
2007 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1205 | } |
2008 | } |
1206 | |
2009 | |
|
|
2010 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
2011 | { |
|
|
2012 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
2013 | } |
|
|
2014 | |
|
|
2015 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
2016 | { |
|
|
2017 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
2018 | } |
|
|
2019 | |
|
|
2020 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
2021 | { |
|
|
2022 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
2023 | } |
|
|
2024 | |
|
|
2025 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
2026 | { |
|
|
2027 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
2028 | } |
|
|
2029 | |
|
|
2030 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
2031 | { |
|
|
2032 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
2033 | } |
|
|
2034 | |
1207 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
2035 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1208 | { |
2036 | { |
1209 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
2037 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1210 | } |
2038 | } |
1211 | |
2039 | |
… | |
… | |
1230 | } |
2058 | } |
1231 | |
2059 | |
1232 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2060 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1233 | { |
2061 | { |
1234 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2062 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
|
|
2063 | } |
|
|
2064 | |
|
|
2065 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2066 | { |
|
|
2067 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
1235 | } |
2068 | } |
1236 | |
2069 | |
1237 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
2070 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1238 | { |
2071 | { |
1239 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
2072 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
… | |
… | |
1303 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2136 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1304 | { |
2137 | { |
1305 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2138 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
1306 | } |
2139 | } |
1307 | |
2140 | |
|
|
2141 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2142 | { |
|
|
2143 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2144 | } |
|
|
2145 | |
1308 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2146 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1309 | { |
2147 | { |
1310 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2148 | return eio__1path (EIO_STAT, path, pri, cb, data); |
1311 | } |
2149 | } |
1312 | |
2150 | |
1313 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
2151 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1314 | { |
2152 | { |
1315 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
2153 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1316 | } |
2154 | } |
1317 | |
2155 | |
|
|
2156 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2157 | { |
|
|
2158 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2159 | } |
|
|
2160 | |
1318 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
2161 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1319 | { |
2162 | { |
1320 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
2163 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1321 | } |
2164 | } |
1322 | |
2165 | |
1323 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
2166 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1324 | { |
2167 | { |
1325 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
2168 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1326 | } |
2169 | } |
1327 | |
2170 | |
1328 | eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) |
2171 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
1329 | { |
2172 | { |
1330 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
2173 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1331 | } |
2174 | } |
1332 | |
2175 | |
1333 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
2176 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1334 | { |
2177 | { |
1335 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
2178 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1336 | } |
2179 | } |
1337 | |
2180 | |
1338 | static eio_req * |
2181 | static eio_req * |
1339 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2182 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1340 | { |
2183 | { |
… | |
… | |
1364 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2207 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1365 | { |
2208 | { |
1366 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2209 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1367 | } |
2210 | } |
1368 | |
2211 | |
1369 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2212 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
1370 | { |
2213 | { |
1371 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2214 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1372 | } |
2215 | } |
1373 | |
2216 | |
1374 | #endif |
2217 | #endif |
… | |
… | |
1385 | #undef SEND |
2228 | #undef SEND |
1386 | |
2229 | |
1387 | /*****************************************************************************/ |
2230 | /*****************************************************************************/ |
1388 | /* grp functions */ |
2231 | /* grp functions */ |
1389 | |
2232 | |
|
|
2233 | void |
1390 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2234 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1391 | { |
2235 | { |
1392 | grp->int2 = limit; |
2236 | grp->int2 = limit; |
1393 | grp->feed = feed; |
2237 | grp->feed = feed; |
1394 | |
2238 | |
1395 | grp_try_feed (grp); |
2239 | grp_try_feed (grp); |
1396 | } |
2240 | } |
1397 | |
2241 | |
|
|
2242 | void |
1398 | void eio_grp_limit (eio_req *grp, int limit) |
2243 | eio_grp_limit (eio_req *grp, int limit) |
1399 | { |
2244 | { |
1400 | grp->int2 = limit; |
2245 | grp->int2 = limit; |
1401 | |
2246 | |
1402 | grp_try_feed (grp); |
2247 | grp_try_feed (grp); |
1403 | } |
2248 | } |
1404 | |
2249 | |
|
|
2250 | void |
1405 | void eio_grp_add (eio_req *grp, eio_req *req) |
2251 | eio_grp_add (eio_req *grp, eio_req *req) |
1406 | { |
2252 | { |
1407 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2253 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
|
|
2254 | |
|
|
2255 | grp->flags |= EIO_FLAG_GROUPADD; |
1408 | |
2256 | |
1409 | ++grp->size; |
2257 | ++grp->size; |
1410 | req->grp = grp; |
2258 | req->grp = grp; |
1411 | |
2259 | |
1412 | req->grp_prev = 0; |
2260 | req->grp_prev = 0; |
… | |
… | |
1419 | } |
2267 | } |
1420 | |
2268 | |
1421 | /*****************************************************************************/ |
2269 | /*****************************************************************************/ |
1422 | /* misc garbage */ |
2270 | /* misc garbage */ |
1423 | |
2271 | |
|
|
2272 | ssize_t |
1424 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2273 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1425 | { |
2274 | { |
1426 | etp_worker wrk; |
2275 | etp_worker wrk; |
|
|
2276 | ssize_t ret; |
1427 | |
2277 | |
1428 | wrk.dbuf = 0; |
2278 | wrk.dbuf = 0; |
1429 | |
2279 | |
1430 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
2280 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
1431 | |
2281 | |
1432 | if (wrk.dbuf) |
2282 | if (wrk.dbuf) |
1433 | free (wrk.dbuf); |
2283 | free (wrk.dbuf); |
1434 | } |
|
|
1435 | |
2284 | |
|
|
2285 | return ret; |
|
|
2286 | } |
|
|
2287 | |