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1 | #define _REENTRANT 1 |
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2 | #include <errno.h> |
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3 | |
1 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
2 | #include "perl.h" |
5 | #include "perl.h" |
3 | #include "XSUB.h" |
6 | #include "XSUB.h" |
4 | |
7 | |
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8 | #include "autoconf/config.h" |
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9 | |
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10 | #include <pthread.h> |
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11 | |
5 | #include <sys/types.h> |
12 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
13 | #include <sys/stat.h> |
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14 | |
7 | #include <unistd.h> |
15 | #include <unistd.h> |
8 | #include <fcntl.h> |
16 | #include <fcntl.h> |
9 | #include <signal.h> |
17 | #include <signal.h> |
10 | #include <sched.h> |
18 | #include <sched.h> |
11 | #include <endian.h> |
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12 | |
19 | |
13 | #include <pthread.h> |
20 | #if HAVE_SENDFILE |
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21 | # if __linux |
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22 | # include <sys/sendfile.h> |
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23 | # elif __freebsd |
14 | #include <sys/syscall.h> |
24 | # include <sys/socket.h> |
15 | |
25 | # include <sys/uio.h> |
16 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
26 | # elif __hpux |
17 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
27 | # include <sys/socket.h> |
18 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
28 | # endif |
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29 | #endif |
19 | |
30 | |
20 | #if __ia64 |
31 | #if __ia64 |
21 | # define STACKSIZE 65536 |
32 | # define STACKSIZE 65536 |
22 | #else |
33 | #else |
23 | # define STACKSIZE 4096 |
34 | # define STACKSIZE 4096 |
… | |
… | |
25 | |
36 | |
26 | enum { |
37 | enum { |
27 | REQ_QUIT, |
38 | REQ_QUIT, |
28 | REQ_OPEN, REQ_CLOSE, |
39 | REQ_OPEN, REQ_CLOSE, |
29 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
40 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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41 | REQ_SENDFILE, |
30 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
42 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
31 | REQ_FSYNC, REQ_FDATASYNC, |
43 | REQ_FSYNC, REQ_FDATASYNC, |
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44 | REQ_UNLINK, REQ_RMDIR, |
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45 | REQ_SYMLINK, |
32 | }; |
46 | }; |
33 | |
47 | |
34 | typedef struct aio_cb { |
48 | typedef struct aio_cb { |
35 | struct aio_cb *volatile next; |
49 | struct aio_cb *volatile next; |
36 | |
50 | |
37 | int type; |
51 | int type; |
38 | |
52 | |
39 | int fd; |
53 | int fd, fd2; |
40 | off_t offset; |
54 | off_t offset; |
41 | size_t length; |
55 | size_t length; |
42 | ssize_t result; |
56 | ssize_t result; |
43 | mode_t mode; /* open */ |
57 | mode_t mode; /* open */ |
44 | int errorno; |
58 | int errorno; |
45 | SV *data, *callback; |
59 | SV *data, *callback; |
46 | void *dataptr; |
60 | SV *fh, *fh2; |
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61 | void *dataptr, *data2ptr; |
47 | STRLEN dataoffset; |
62 | STRLEN dataoffset; |
48 | |
63 | |
49 | Stat_t *statdata; |
64 | Stat_t *statdata; |
50 | } aio_cb; |
65 | } aio_cb; |
51 | |
66 | |
52 | typedef aio_cb *aio_req; |
67 | typedef aio_cb *aio_req; |
53 | |
68 | |
54 | static int started; |
69 | static int started, wanted; |
55 | static int nreqs; |
70 | static volatile int nreqs; |
56 | static int max_outstanding = 1<<30; |
71 | static int max_outstanding = 1<<30; |
57 | static int respipe [2]; |
72 | static int respipe [2]; |
58 | |
73 | |
59 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
74 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
60 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
75 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
76 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
62 | |
77 | |
63 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
78 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
64 | static volatile aio_req ress, rese; /* queue start, queue end */ |
79 | static volatile aio_req ress, rese; /* queue start, queue end */ |
65 | |
80 | |
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81 | static void free_req (aio_req req) |
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82 | { |
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83 | if (req->data) |
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84 | SvREFCNT_dec (req->data); |
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85 | |
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86 | if (req->fh) |
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87 | SvREFCNT_dec (req->fh); |
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88 | |
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89 | if (req->fh2) |
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90 | SvREFCNT_dec (req->fh2); |
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91 | |
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92 | if (req->statdata) |
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93 | Safefree (req->statdata); |
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94 | |
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95 | if (req->callback) |
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96 | SvREFCNT_dec (req->callback); |
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97 | |
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98 | Safefree (req); |
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99 | } |
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100 | |
66 | static void |
101 | static void |
67 | poll_wait () |
102 | poll_wait () |
68 | { |
103 | { |
69 | if (!nreqs) |
104 | if (nreqs && !ress) |
70 | return; |
105 | { |
71 | |
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72 | fd_set rfd; |
106 | fd_set rfd; |
73 | FD_ZERO(&rfd); |
107 | FD_ZERO(&rfd); |
74 | FD_SET(respipe [0], &rfd); |
108 | FD_SET(respipe [0], &rfd); |
75 | |
109 | |
76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
110 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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111 | } |
77 | } |
112 | } |
78 | |
113 | |
79 | static int |
114 | static int |
80 | poll_cb () |
115 | poll_cb () |
81 | { |
116 | { |
82 | dSP; |
117 | dSP; |
83 | int count = 0; |
118 | int count = 0; |
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119 | int do_croak = 0; |
84 | aio_req req; |
120 | aio_req req; |
85 | |
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86 | { |
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87 | /* read and signals sent by the worker threads */ |
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88 | char buf [32]; |
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89 | while (read (respipe [0], buf, 32) > 0) |
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90 | ; |
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91 | } |
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92 | |
121 | |
93 | for (;;) |
122 | for (;;) |
94 | { |
123 | { |
95 | pthread_mutex_lock (&reslock); |
124 | pthread_mutex_lock (&reslock); |
96 | |
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97 | req = ress; |
125 | req = ress; |
98 | |
126 | |
99 | if (ress) |
127 | if (req) |
100 | { |
128 | { |
101 | ress = ress->next; |
129 | ress = req->next; |
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130 | |
102 | if (!ress) rese = 0; |
131 | if (!ress) |
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132 | { |
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133 | /* read any signals sent by the worker threads */ |
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134 | char buf [32]; |
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135 | while (read (respipe [0], buf, 32) == 32) |
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136 | ; |
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137 | |
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138 | rese = 0; |
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139 | } |
103 | } |
140 | } |
104 | |
141 | |
105 | pthread_mutex_unlock (&reslock); |
142 | pthread_mutex_unlock (&reslock); |
106 | |
143 | |
107 | if (!req) |
144 | if (!req) |
… | |
… | |
115 | { |
152 | { |
116 | int errorno = errno; |
153 | int errorno = errno; |
117 | errno = req->errorno; |
154 | errno = req->errorno; |
118 | |
155 | |
119 | if (req->type == REQ_READ) |
156 | if (req->type == REQ_READ) |
120 | SvCUR_set (req->data, req->dataoffset |
157 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
121 | + req->result > 0 ? req->result : 0); |
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122 | |
158 | |
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159 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
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160 | SvREADONLY_off (req->data); |
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161 | |
123 | if (req->data) |
162 | if (req->statdata) |
124 | SvREFCNT_dec (req->data); |
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125 | |
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126 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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127 | { |
163 | { |
128 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
164 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
129 | PL_laststatval = req->result; |
165 | PL_laststatval = req->result; |
130 | PL_statcache = *(req->statdata); |
166 | PL_statcache = *(req->statdata); |
131 | |
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132 | Safefree (req->statdata); |
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133 | } |
167 | } |
134 | |
168 | |
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169 | ENTER; |
135 | PUSHMARK (SP); |
170 | PUSHMARK (SP); |
136 | XPUSHs (sv_2mortal (newSViv (req->result))); |
171 | XPUSHs (sv_2mortal (newSViv (req->result))); |
137 | |
172 | |
138 | if (req->type == REQ_OPEN) |
173 | if (req->type == REQ_OPEN) |
139 | { |
174 | { |
… | |
… | |
142 | |
177 | |
143 | PUTBACK; |
178 | PUTBACK; |
144 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
179 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
145 | SPAGAIN; |
180 | SPAGAIN; |
146 | |
181 | |
147 | fh = POPs; |
182 | fh = SvREFCNT_inc (POPs); |
148 | |
183 | |
149 | PUSHMARK (SP); |
184 | PUSHMARK (SP); |
150 | XPUSHs (fh); |
185 | XPUSHs (sv_2mortal (fh)); |
151 | } |
186 | } |
152 | |
187 | |
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188 | if (SvOK (req->callback)) |
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189 | { |
153 | PUTBACK; |
190 | PUTBACK; |
154 | call_sv (req->callback, G_VOID | G_EVAL); |
191 | call_sv (req->callback, G_VOID | G_EVAL); |
155 | SPAGAIN; |
192 | SPAGAIN; |
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193 | |
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194 | if (SvTRUE (ERRSV)) |
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195 | { |
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196 | free_req (req); |
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197 | croak (0); |
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198 | } |
156 | |
199 | } |
157 | if (req->callback) |
200 | |
158 | SvREFCNT_dec (req->callback); |
201 | LEAVE; |
159 | |
202 | |
160 | errno = errorno; |
203 | errno = errorno; |
161 | count++; |
204 | count++; |
162 | } |
205 | } |
163 | |
206 | |
164 | Safefree (req); |
207 | free_req (req); |
165 | } |
208 | } |
166 | |
209 | |
167 | return count; |
210 | return count; |
168 | } |
211 | } |
169 | |
212 | |
… | |
… | |
190 | } |
233 | } |
191 | |
234 | |
192 | static void |
235 | static void |
193 | send_req (aio_req req) |
236 | send_req (aio_req req) |
194 | { |
237 | { |
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238 | while (started < wanted && nreqs >= started) |
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239 | start_thread (); |
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240 | |
195 | nreqs++; |
241 | nreqs++; |
196 | |
242 | |
197 | pthread_mutex_lock (&reqlock); |
243 | pthread_mutex_lock (&reqlock); |
198 | |
244 | |
199 | req->next = 0; |
245 | req->next = 0; |
… | |
… | |
207 | reqe = reqs = req; |
253 | reqe = reqs = req; |
208 | |
254 | |
209 | pthread_cond_signal (&reqwait); |
255 | pthread_cond_signal (&reqwait); |
210 | pthread_mutex_unlock (&reqlock); |
256 | pthread_mutex_unlock (&reqlock); |
211 | |
257 | |
212 | while (nreqs > max_outstanding) |
258 | if (nreqs > max_outstanding) |
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259 | for (;;) |
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260 | { |
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261 | poll_cb (); |
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262 | |
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263 | if (nreqs <= max_outstanding) |
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264 | break; |
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265 | |
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266 | poll_wait (); |
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267 | } |
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268 | } |
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269 | |
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270 | static void |
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271 | end_thread (void) |
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272 | { |
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273 | aio_req req; |
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274 | Newz (0, req, 1, aio_cb); |
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275 | req->type = REQ_QUIT; |
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276 | |
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277 | send_req (req); |
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278 | } |
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279 | |
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280 | static void min_parallel (int nthreads) |
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281 | { |
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282 | if (wanted < nthreads) |
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283 | wanted = nthreads; |
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284 | } |
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285 | |
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286 | static void max_parallel (int nthreads) |
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287 | { |
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288 | int cur = started; |
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289 | |
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290 | if (wanted > nthreads) |
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291 | wanted = nthreads; |
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292 | |
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293 | while (cur > wanted) |
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294 | { |
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295 | end_thread (); |
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296 | cur--; |
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297 | } |
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298 | |
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299 | while (started > wanted) |
213 | { |
300 | { |
214 | poll_wait (); |
301 | poll_wait (); |
215 | poll_cb (); |
302 | poll_cb (); |
216 | } |
303 | } |
217 | } |
304 | } |
218 | |
305 | |
219 | static void |
306 | static void create_pipe () |
220 | end_thread (void) |
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221 | { |
307 | { |
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308 | if (pipe (respipe)) |
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309 | croak ("unable to initialize result pipe"); |
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310 | |
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311 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
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312 | croak ("cannot set result pipe to nonblocking mode"); |
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313 | |
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314 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
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315 | croak ("cannot set result pipe to nonblocking mode"); |
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316 | } |
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317 | |
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318 | static void atfork_prepare (void) |
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319 | { |
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320 | pthread_mutex_lock (&reqlock); |
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321 | pthread_mutex_lock (&reslock); |
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322 | } |
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323 | |
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324 | static void atfork_parent (void) |
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325 | { |
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326 | pthread_mutex_unlock (&reslock); |
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327 | pthread_mutex_unlock (&reqlock); |
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328 | } |
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329 | |
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330 | static void atfork_child (void) |
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331 | { |
222 | aio_req req; |
332 | aio_req prv; |
223 | New (0, req, 1, aio_cb); |
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224 | req->type = REQ_QUIT; |
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225 | |
333 | |
226 | send_req (req); |
334 | started = 0; |
227 | } |
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228 | |
335 | |
229 | static void |
336 | while (reqs) |
230 | read_write (int dowrite, int fd, off_t offset, size_t length, |
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231 | SV *data, STRLEN dataoffset, SV *callback) |
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232 | { |
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233 | aio_req req; |
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234 | STRLEN svlen; |
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235 | char *svptr = SvPV (data, svlen); |
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236 | |
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237 | SvUPGRADE (data, SVt_PV); |
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238 | SvPOK_on (data); |
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239 | |
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240 | if (dataoffset < 0) |
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241 | dataoffset += svlen; |
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242 | |
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243 | if (dataoffset < 0 || dataoffset > svlen) |
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244 | croak ("data offset outside of string"); |
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245 | |
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246 | if (dowrite) |
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247 | { |
337 | { |
248 | /* write: check length and adjust. */ |
338 | prv = reqs; |
249 | if (length < 0 || length + dataoffset > svlen) |
339 | reqs = prv->next; |
250 | length = svlen - dataoffset; |
340 | free_req (prv); |
251 | } |
341 | } |
252 | else |
342 | |
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343 | reqs = reqe = 0; |
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344 | |
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345 | while (ress) |
253 | { |
346 | { |
254 | /* read: grow scalar as necessary */ |
347 | prv = ress; |
255 | svptr = SvGROW (data, length + dataoffset); |
348 | ress = prv->next; |
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349 | free_req (prv); |
256 | } |
350 | } |
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351 | |
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352 | ress = rese = 0; |
257 | |
353 | |
258 | if (length < 0) |
354 | close (respipe [0]); |
259 | croak ("length must not be negative"); |
355 | close (respipe [1]); |
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356 | create_pipe (); |
260 | |
357 | |
261 | Newz (0, req, 1, aio_cb); |
358 | atfork_parent (); |
262 | |
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263 | if (!req) |
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264 | croak ("out of memory during aio_req allocation"); |
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265 | |
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266 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
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267 | req->fd = fd; |
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268 | req->offset = offset; |
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269 | req->length = length; |
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270 | req->data = SvREFCNT_inc (data); |
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271 | req->dataptr = (char *)svptr + dataoffset; |
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272 | req->callback = SvREFCNT_inc (callback); |
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273 | |
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274 | send_req (req); |
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275 | } |
359 | } |
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360 | |
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361 | /*****************************************************************************/ |
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362 | /* work around various missing functions */ |
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363 | |
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364 | #if !HAVE_PREADWRITE |
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365 | # define pread aio_pread |
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366 | # define pwrite aio_pwrite |
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367 | |
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368 | /* |
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369 | * make our pread/pwrite safe against themselves, but not against |
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370 | * normal read/write by using a mutex. slows down execution a lot, |
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371 | * but that's your problem, not mine. |
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372 | */ |
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373 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
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374 | |
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375 | static ssize_t |
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376 | pread (int fd, void *buf, size_t count, off_t offset) |
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377 | { |
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378 | ssize_t res; |
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379 | off_t ooffset; |
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380 | |
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381 | pthread_mutex_lock (&iolock); |
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382 | ooffset = lseek (fd, 0, SEEK_CUR); |
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383 | lseek (fd, offset, SEEK_SET); |
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384 | res = read (fd, buf, count); |
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385 | lseek (fd, ooffset, SEEK_SET); |
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386 | pthread_mutex_unlock (&iolock); |
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387 | |
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388 | return res; |
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389 | } |
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390 | |
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391 | static ssize_t |
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392 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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393 | { |
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394 | ssize_t res; |
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395 | off_t ooffset; |
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396 | |
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397 | pthread_mutex_lock (&iolock); |
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398 | ooffset = lseek (fd, 0, SEEK_CUR); |
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399 | lseek (fd, offset, SEEK_SET); |
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400 | res = write (fd, buf, count); |
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401 | lseek (fd, offset, SEEK_SET); |
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402 | pthread_mutex_unlock (&iolock); |
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403 | |
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404 | return res; |
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405 | } |
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406 | #endif |
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407 | |
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408 | #if !HAVE_FDATASYNC |
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409 | # define fdatasync fsync |
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410 | #endif |
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411 | |
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412 | #if !HAVE_READAHEAD |
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413 | # define readahead aio_readahead |
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414 | |
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415 | static char readahead_buf[4096]; |
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416 | |
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417 | static ssize_t |
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418 | readahead (int fd, off_t offset, size_t count) |
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419 | { |
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420 | while (count > 0) |
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421 | { |
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422 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
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423 | |
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424 | pread (fd, readahead_buf, len, offset); |
|
|
425 | offset += len; |
|
|
426 | count -= len; |
|
|
427 | } |
|
|
428 | |
|
|
429 | errno = 0; |
|
|
430 | } |
|
|
431 | #endif |
|
|
432 | |
|
|
433 | /* sendfile always needs emulation */ |
|
|
434 | static ssize_t |
|
|
435 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
436 | { |
|
|
437 | ssize_t res; |
|
|
438 | |
|
|
439 | if (!count) |
|
|
440 | return 0; |
|
|
441 | |
|
|
442 | #if __linux |
|
|
443 | res = sendfile (ofd, ifd, &offset, count); |
|
|
444 | |
|
|
445 | #elif __freebsd |
|
|
446 | /* |
|
|
447 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
448 | * wasted on making it similar to other i/o functions. |
|
|
449 | */ |
|
|
450 | { |
|
|
451 | off_t sbytes; |
|
|
452 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
453 | |
|
|
454 | if (!res && errno == EAGAIN) |
|
|
455 | /* maybe on others, too, as usual, the manpage leaves you guessing */ |
|
|
456 | res = sbytes; |
|
|
457 | } |
|
|
458 | |
|
|
459 | #elif __hpux |
|
|
460 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
461 | |
|
|
462 | #else |
|
|
463 | res = -1; |
|
|
464 | errno = ENOSYS; |
|
|
465 | #endif |
|
|
466 | |
|
|
467 | if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK)) |
|
|
468 | { |
|
|
469 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
470 | char *buf = malloc (4096); |
|
|
471 | res = 0; |
|
|
472 | |
|
|
473 | for (;;) |
|
|
474 | { |
|
|
475 | ssize_t cnt; |
|
|
476 | |
|
|
477 | cnt = pread (ifd, buf, 4096, offset); |
|
|
478 | |
|
|
479 | if (cnt <= 0) |
|
|
480 | { |
|
|
481 | if (cnt && !res) res = -1; |
|
|
482 | break; |
|
|
483 | } |
|
|
484 | |
|
|
485 | cnt = write (ofd, buf, cnt); |
|
|
486 | |
|
|
487 | if (cnt <= 0) |
|
|
488 | { |
|
|
489 | if (cnt && !res) res = -1; |
|
|
490 | break; |
|
|
491 | } |
|
|
492 | |
|
|
493 | offset += cnt; |
|
|
494 | res += cnt; |
|
|
495 | } |
|
|
496 | |
|
|
497 | { |
|
|
498 | int errorno = errno; |
|
|
499 | free (buf); |
|
|
500 | errno = errorno; |
|
|
501 | } |
|
|
502 | } |
|
|
503 | |
|
|
504 | return res; |
|
|
505 | } |
|
|
506 | |
|
|
507 | /*****************************************************************************/ |
276 | |
508 | |
277 | static void * |
509 | static void * |
278 | aio_proc (void *thr_arg) |
510 | aio_proc (void *thr_arg) |
279 | { |
511 | { |
280 | aio_req req; |
512 | aio_req req; |
… | |
… | |
306 | |
538 | |
307 | type = req->type; |
539 | type = req->type; |
308 | |
540 | |
309 | switch (type) |
541 | switch (type) |
310 | { |
542 | { |
311 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
543 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
312 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
544 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
313 | #if SYS_readahead |
545 | |
314 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
546 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
315 | #else |
547 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
316 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
317 | #endif |
|
|
318 | |
548 | |
319 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
549 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
320 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
550 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
321 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
551 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
322 | |
552 | |
323 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
553 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
324 | case REQ_CLOSE: req->result = close (req->fd); break; |
554 | case REQ_CLOSE: req->result = close (req->fd); break; |
325 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
555 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
556 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
557 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
326 | |
558 | |
|
|
559 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
327 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
560 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
328 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
329 | |
561 | |
330 | case REQ_QUIT: |
562 | case REQ_QUIT: |
331 | break; |
563 | break; |
332 | |
564 | |
333 | default: |
565 | default: |
… | |
… | |
359 | while (type != REQ_QUIT); |
591 | while (type != REQ_QUIT); |
360 | |
592 | |
361 | return 0; |
593 | return 0; |
362 | } |
594 | } |
363 | |
595 | |
|
|
596 | #define dREQ \ |
|
|
597 | aio_req req; \ |
|
|
598 | \ |
|
|
599 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
600 | croak ("clalback must be undef or of reference type"); \ |
|
|
601 | \ |
|
|
602 | Newz (0, req, 1, aio_cb); \ |
|
|
603 | if (!req) \ |
|
|
604 | croak ("out of memory during aio_req allocation"); \ |
|
|
605 | \ |
|
|
606 | req->callback = newSVsv (callback); |
|
|
607 | |
364 | MODULE = IO::AIO PACKAGE = IO::AIO |
608 | MODULE = IO::AIO PACKAGE = IO::AIO |
365 | |
609 | |
|
|
610 | PROTOTYPES: ENABLE |
|
|
611 | |
366 | BOOT: |
612 | BOOT: |
367 | { |
613 | { |
368 | if (pipe (respipe)) |
614 | create_pipe (); |
369 | croak ("unable to initialize result pipe"); |
615 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
370 | |
|
|
371 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
372 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
373 | |
|
|
374 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
375 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
376 | } |
616 | } |
377 | |
617 | |
378 | void |
618 | void |
379 | min_parallel(nthreads) |
619 | min_parallel(nthreads) |
380 | int nthreads |
620 | int nthreads |
381 | PROTOTYPE: $ |
621 | PROTOTYPE: $ |
382 | CODE: |
|
|
383 | while (nthreads > started) |
|
|
384 | start_thread (); |
|
|
385 | |
622 | |
386 | void |
623 | void |
387 | max_parallel(nthreads) |
624 | max_parallel(nthreads) |
388 | int nthreads |
625 | int nthreads |
389 | PROTOTYPE: $ |
626 | PROTOTYPE: $ |
390 | CODE: |
|
|
391 | { |
|
|
392 | int cur = started; |
|
|
393 | while (cur > nthreads) |
|
|
394 | { |
|
|
395 | end_thread (); |
|
|
396 | cur--; |
|
|
397 | } |
|
|
398 | |
|
|
399 | while (started > nthreads) |
|
|
400 | { |
|
|
401 | poll_wait (); |
|
|
402 | poll_cb (); |
|
|
403 | } |
|
|
404 | } |
|
|
405 | |
627 | |
406 | int |
628 | int |
407 | max_outstanding(nreqs) |
629 | max_outstanding(nreqs) |
408 | int nreqs |
630 | int nreqs |
409 | PROTOTYPE: $ |
631 | PROTOTYPE: $ |
410 | CODE: |
632 | CODE: |
411 | RETVAL = max_outstanding; |
633 | RETVAL = max_outstanding; |
412 | max_outstanding = nreqs; |
634 | max_outstanding = nreqs; |
413 | |
635 | |
414 | void |
636 | void |
415 | aio_open(pathname,flags,mode,callback) |
637 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
416 | SV * pathname |
638 | SV * pathname |
417 | int flags |
639 | int flags |
418 | int mode |
640 | int mode |
419 | SV * callback |
641 | SV * callback |
420 | PROTOTYPE: $$$$ |
642 | PROTOTYPE: $$$;$ |
421 | CODE: |
643 | CODE: |
422 | { |
644 | { |
423 | aio_req req; |
645 | dREQ; |
424 | |
|
|
425 | Newz (0, req, 1, aio_cb); |
|
|
426 | |
|
|
427 | if (!req) |
|
|
428 | croak ("out of memory during aio_req allocation"); |
|
|
429 | |
646 | |
430 | req->type = REQ_OPEN; |
647 | req->type = REQ_OPEN; |
431 | req->data = newSVsv (pathname); |
648 | req->data = newSVsv (pathname); |
432 | req->dataptr = SvPV_nolen (req->data); |
649 | req->dataptr = SvPVbyte_nolen (req->data); |
433 | req->fd = flags; |
650 | req->fd = flags; |
434 | req->mode = mode; |
651 | req->mode = mode; |
435 | req->callback = SvREFCNT_inc (callback); |
|
|
436 | |
652 | |
437 | send_req (req); |
653 | send_req (req); |
438 | } |
654 | } |
439 | |
655 | |
440 | void |
656 | void |
441 | aio_close(fh,callback) |
657 | aio_close(fh,callback=&PL_sv_undef) |
442 | InputStream fh |
658 | SV * fh |
443 | SV * callback |
659 | SV * callback |
444 | PROTOTYPE: $$ |
660 | PROTOTYPE: $;$ |
445 | ALIAS: |
661 | ALIAS: |
446 | aio_close = REQ_CLOSE |
662 | aio_close = REQ_CLOSE |
447 | aio_fsync = REQ_FSYNC |
663 | aio_fsync = REQ_FSYNC |
448 | aio_fdatasync = REQ_FDATASYNC |
664 | aio_fdatasync = REQ_FDATASYNC |
449 | CODE: |
665 | CODE: |
450 | { |
666 | { |
|
|
667 | dREQ; |
|
|
668 | |
|
|
669 | req->type = ix; |
|
|
670 | req->fh = newSVsv (fh); |
|
|
671 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
672 | |
|
|
673 | send_req (req); |
|
|
674 | } |
|
|
675 | |
|
|
676 | void |
|
|
677 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
678 | SV * fh |
|
|
679 | UV offset |
|
|
680 | UV length |
|
|
681 | SV * data |
|
|
682 | UV dataoffset |
|
|
683 | SV * callback |
|
|
684 | ALIAS: |
|
|
685 | aio_read = REQ_READ |
|
|
686 | aio_write = REQ_WRITE |
|
|
687 | PROTOTYPE: $$$$$;$ |
|
|
688 | CODE: |
|
|
689 | { |
451 | aio_req req; |
690 | aio_req req; |
|
|
691 | STRLEN svlen; |
|
|
692 | char *svptr = SvPVbyte (data, svlen); |
452 | |
693 | |
453 | Newz (0, req, 1, aio_cb); |
694 | SvUPGRADE (data, SVt_PV); |
|
|
695 | SvPOK_on (data); |
454 | |
696 | |
455 | if (!req) |
697 | if (dataoffset < 0) |
456 | croak ("out of memory during aio_req allocation"); |
698 | dataoffset += svlen; |
457 | |
699 | |
458 | req->type = ix; |
700 | if (dataoffset < 0 || dataoffset > svlen) |
459 | req->fd = PerlIO_fileno (fh); |
701 | croak ("data offset outside of string"); |
460 | req->callback = SvREFCNT_inc (callback); |
|
|
461 | |
702 | |
462 | send_req (req); |
703 | if (ix == REQ_WRITE) |
463 | } |
704 | { |
464 | |
705 | /* write: check length and adjust. */ |
465 | void |
706 | if (length < 0 || length + dataoffset > svlen) |
466 | aio_read(fh,offset,length,data,dataoffset,callback) |
707 | length = svlen - dataoffset; |
467 | InputStream fh |
708 | } |
468 | UV offset |
709 | else |
469 | IV length |
710 | { |
470 | SV * data |
711 | /* read: grow scalar as necessary */ |
471 | IV dataoffset |
712 | svptr = SvGROW (data, length + dataoffset); |
472 | SV * callback |
713 | } |
473 | PROTOTYPE: $$$$$$ |
|
|
474 | CODE: |
|
|
475 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
476 | |
|
|
477 | void |
|
|
478 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
479 | OutputStream fh |
|
|
480 | UV offset |
|
|
481 | IV length |
|
|
482 | SV * data |
|
|
483 | IV dataoffset |
|
|
484 | SV * callback |
|
|
485 | PROTOTYPE: $$$$$$ |
|
|
486 | CODE: |
|
|
487 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
488 | |
|
|
489 | void |
|
|
490 | aio_readahead(fh,offset,length,callback) |
|
|
491 | InputStream fh |
|
|
492 | UV offset |
|
|
493 | IV length |
|
|
494 | SV * callback |
|
|
495 | PROTOTYPE: $$$$ |
|
|
496 | CODE: |
|
|
497 | { |
|
|
498 | aio_req req; |
|
|
499 | |
714 | |
500 | if (length < 0) |
715 | if (length < 0) |
501 | croak ("length must not be negative"); |
716 | croak ("length must not be negative"); |
502 | |
717 | |
503 | Newz (0, req, 1, aio_cb); |
718 | { |
|
|
719 | dREQ; |
504 | |
720 | |
505 | if (!req) |
721 | req->type = ix; |
506 | croak ("out of memory during aio_req allocation"); |
722 | req->fh = newSVsv (fh); |
|
|
723 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
724 | : IoOFP (sv_2io (fh))); |
|
|
725 | req->offset = offset; |
|
|
726 | req->length = length; |
|
|
727 | req->data = SvREFCNT_inc (data); |
|
|
728 | req->dataptr = (char *)svptr + dataoffset; |
|
|
729 | |
|
|
730 | if (!SvREADONLY (data)) |
|
|
731 | { |
|
|
732 | SvREADONLY_on (data); |
|
|
733 | req->data2ptr = (void *)data; |
|
|
734 | } |
|
|
735 | |
|
|
736 | send_req (req); |
|
|
737 | } |
|
|
738 | } |
|
|
739 | |
|
|
740 | void |
|
|
741 | aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
742 | SV * out_fh |
|
|
743 | SV * in_fh |
|
|
744 | UV in_offset |
|
|
745 | UV length |
|
|
746 | SV * callback |
|
|
747 | PROTOTYPE: $$$$;$ |
|
|
748 | CODE: |
|
|
749 | { |
|
|
750 | dREQ; |
|
|
751 | |
|
|
752 | req->type = REQ_SENDFILE; |
|
|
753 | req->fh = newSVsv (out_fh); |
|
|
754 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
755 | req->fh2 = newSVsv (in_fh); |
|
|
756 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
757 | req->offset = in_offset; |
|
|
758 | req->length = length; |
|
|
759 | |
|
|
760 | send_req (req); |
|
|
761 | } |
|
|
762 | |
|
|
763 | void |
|
|
764 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
765 | SV * fh |
|
|
766 | UV offset |
|
|
767 | IV length |
|
|
768 | SV * callback |
|
|
769 | PROTOTYPE: $$$;$ |
|
|
770 | CODE: |
|
|
771 | { |
|
|
772 | dREQ; |
507 | |
773 | |
508 | req->type = REQ_READAHEAD; |
774 | req->type = REQ_READAHEAD; |
|
|
775 | req->fh = newSVsv (fh); |
509 | req->fd = PerlIO_fileno (fh); |
776 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
510 | req->offset = offset; |
777 | req->offset = offset; |
511 | req->length = length; |
778 | req->length = length; |
512 | req->callback = SvREFCNT_inc (callback); |
|
|
513 | |
779 | |
514 | send_req (req); |
780 | send_req (req); |
515 | } |
781 | } |
516 | |
782 | |
517 | void |
783 | void |
518 | aio_stat(fh_or_path,callback) |
784 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
519 | SV * fh_or_path |
785 | SV * fh_or_path |
520 | SV * callback |
786 | SV * callback |
521 | PROTOTYPE: $$ |
|
|
522 | ALIAS: |
787 | ALIAS: |
|
|
788 | aio_stat = REQ_STAT |
523 | aio_lstat = 1 |
789 | aio_lstat = REQ_LSTAT |
524 | CODE: |
790 | CODE: |
525 | { |
791 | { |
526 | aio_req req; |
792 | dREQ; |
527 | |
|
|
528 | Newz (0, req, 1, aio_cb); |
|
|
529 | |
|
|
530 | if (!req) |
|
|
531 | croak ("out of memory during aio_req allocation"); |
|
|
532 | |
793 | |
533 | New (0, req->statdata, 1, Stat_t); |
794 | New (0, req->statdata, 1, Stat_t); |
534 | |
|
|
535 | if (!req->statdata) |
795 | if (!req->statdata) |
|
|
796 | { |
|
|
797 | free_req (req); |
536 | croak ("out of memory during aio_req->statdata allocation"); |
798 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
799 | } |
537 | |
800 | |
538 | if (SvPOK (fh_or_path)) |
801 | if (SvPOK (fh_or_path)) |
539 | { |
802 | { |
540 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
803 | req->type = ix; |
541 | req->data = newSVsv (fh_or_path); |
804 | req->data = newSVsv (fh_or_path); |
542 | req->dataptr = SvPV_nolen (req->data); |
805 | req->dataptr = SvPVbyte_nolen (req->data); |
543 | } |
806 | } |
544 | else |
807 | else |
545 | { |
808 | { |
546 | req->type = REQ_FSTAT; |
809 | req->type = REQ_FSTAT; |
|
|
810 | req->fh = newSVsv (fh_or_path); |
547 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
811 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
548 | } |
812 | } |
549 | |
813 | |
550 | req->callback = SvREFCNT_inc (callback); |
|
|
551 | |
|
|
552 | send_req (req); |
814 | send_req (req); |
553 | } |
815 | } |
554 | |
816 | |
555 | void |
817 | void |
556 | aio_unlink(pathname,callback) |
818 | aio_unlink(pathname,callback=&PL_sv_undef) |
557 | SV * pathname |
819 | SV * pathname |
558 | SV * callback |
820 | SV * callback |
559 | PROTOTYPE: $$ |
821 | ALIAS: |
|
|
822 | aio_unlink = REQ_UNLINK |
|
|
823 | aio_rmdir = REQ_RMDIR |
560 | CODE: |
824 | CODE: |
561 | { |
825 | { |
562 | aio_req req; |
826 | dREQ; |
563 | |
827 | |
564 | Newz (0, req, 1, aio_cb); |
828 | req->type = ix; |
|
|
829 | req->data = newSVsv (pathname); |
|
|
830 | req->dataptr = SvPVbyte_nolen (req->data); |
565 | |
831 | |
566 | if (!req) |
832 | send_req (req); |
567 | croak ("out of memory during aio_req allocation"); |
833 | } |
|
|
834 | |
|
|
835 | void |
|
|
836 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
837 | SV * oldpath |
|
|
838 | SV * newpath |
|
|
839 | SV * callback |
|
|
840 | CODE: |
|
|
841 | { |
|
|
842 | dREQ; |
568 | |
843 | |
569 | req->type = REQ_UNLINK; |
844 | req->type = REQ_SYMLINK; |
|
|
845 | req->fh = newSVsv (oldpath); |
|
|
846 | req->data2ptr = SvPVbyte_nolen (req->fh); |
570 | req->data = newSVsv (pathname); |
847 | req->data = newSVsv (newpath); |
571 | req->dataptr = SvPV_nolen (req->data); |
848 | req->dataptr = SvPVbyte_nolen (req->data); |
572 | req->callback = SvREFCNT_inc (callback); |
|
|
573 | |
849 | |
574 | send_req (req); |
850 | send_req (req); |
575 | } |
851 | } |
576 | |
852 | |
577 | void |
853 | void |
… | |
… | |
582 | { |
858 | { |
583 | poll_wait (); |
859 | poll_wait (); |
584 | poll_cb (); |
860 | poll_cb (); |
585 | } |
861 | } |
586 | |
862 | |
|
|
863 | void |
|
|
864 | poll() |
|
|
865 | PROTOTYPE: |
|
|
866 | CODE: |
|
|
867 | if (nreqs) |
|
|
868 | { |
|
|
869 | poll_wait (); |
|
|
870 | poll_cb (); |
|
|
871 | } |
|
|
872 | |
587 | int |
873 | int |
588 | poll_fileno() |
874 | poll_fileno() |
589 | PROTOTYPE: |
875 | PROTOTYPE: |
590 | CODE: |
876 | CODE: |
591 | RETVAL = respipe [0]; |
877 | RETVAL = respipe [0]; |