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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 | # elif __solaris /* not yet */ |
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29 | # include <sys/sendfile.h> |
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30 | # else |
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31 | # error sendfile support requested but not available |
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32 | # endif |
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33 | #endif |
19 | |
34 | |
20 | #if __ia64 |
35 | #if __ia64 |
21 | # define STACKSIZE 65536 |
36 | # define STACKSIZE 65536 |
22 | #else |
37 | #else |
23 | # define STACKSIZE 4096 |
38 | # define STACKSIZE 4096 |
… | |
… | |
25 | |
40 | |
26 | enum { |
41 | enum { |
27 | REQ_QUIT, |
42 | REQ_QUIT, |
28 | REQ_OPEN, REQ_CLOSE, |
43 | REQ_OPEN, REQ_CLOSE, |
29 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
44 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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45 | REQ_SENDFILE, |
30 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
46 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
31 | REQ_FSYNC, REQ_FDATASYNC, |
47 | REQ_FSYNC, REQ_FDATASYNC, |
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48 | REQ_UNLINK, REQ_RMDIR, |
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49 | REQ_SYMLINK, |
32 | }; |
50 | }; |
33 | |
51 | |
34 | typedef struct aio_cb { |
52 | typedef struct aio_cb { |
35 | struct aio_cb *volatile next; |
53 | struct aio_cb *volatile next; |
36 | |
54 | |
37 | int type; |
55 | int type; |
38 | |
56 | |
39 | int fd; |
57 | int fd, fd2; |
40 | off_t offset; |
58 | off_t offset; |
41 | size_t length; |
59 | size_t length; |
42 | ssize_t result; |
60 | ssize_t result; |
43 | mode_t mode; /* open */ |
61 | mode_t mode; /* open */ |
44 | int errorno; |
62 | int errorno; |
45 | SV *data, *callback; |
63 | SV *data, *callback; |
46 | void *dataptr; |
64 | SV *fh, *fh2; |
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65 | void *dataptr, *data2ptr; |
47 | STRLEN dataoffset; |
66 | STRLEN dataoffset; |
48 | |
67 | |
49 | Stat_t *statdata; |
68 | Stat_t *statdata; |
50 | } aio_cb; |
69 | } aio_cb; |
51 | |
70 | |
52 | typedef aio_cb *aio_req; |
71 | typedef aio_cb *aio_req; |
53 | |
72 | |
54 | static int started; |
73 | static int started, wanted; |
55 | static int nreqs; |
74 | static volatile int nreqs; |
56 | static int max_outstanding = 1<<30; |
75 | static int max_outstanding = 1<<30; |
57 | static int respipe [2]; |
76 | static int respipe [2]; |
58 | |
77 | |
59 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
78 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
60 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
79 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
80 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
62 | |
81 | |
63 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
82 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
64 | static volatile aio_req ress, rese; /* queue start, queue end */ |
83 | static volatile aio_req ress, rese; /* queue start, queue end */ |
65 | |
84 | |
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85 | static void free_req (aio_req req) |
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86 | { |
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87 | if (req->data) |
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88 | SvREFCNT_dec (req->data); |
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89 | |
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90 | if (req->fh) |
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91 | SvREFCNT_dec (req->fh); |
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92 | |
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93 | if (req->fh2) |
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94 | SvREFCNT_dec (req->fh2); |
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95 | |
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96 | if (req->statdata) |
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97 | Safefree (req->statdata); |
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98 | |
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99 | if (req->callback) |
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100 | SvREFCNT_dec (req->callback); |
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101 | |
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102 | Safefree (req); |
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103 | } |
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104 | |
66 | static void |
105 | static void |
67 | poll_wait () |
106 | poll_wait () |
68 | { |
107 | { |
69 | if (!nreqs) |
108 | if (nreqs && !ress) |
70 | return; |
109 | { |
71 | |
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72 | fd_set rfd; |
110 | fd_set rfd; |
73 | FD_ZERO(&rfd); |
111 | FD_ZERO(&rfd); |
74 | FD_SET(respipe [0], &rfd); |
112 | FD_SET(respipe [0], &rfd); |
75 | |
113 | |
76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
114 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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115 | } |
77 | } |
116 | } |
78 | |
117 | |
79 | static int |
118 | static int |
80 | poll_cb () |
119 | poll_cb () |
81 | { |
120 | { |
82 | dSP; |
121 | dSP; |
83 | int count = 0; |
122 | int count = 0; |
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123 | int do_croak = 0; |
84 | aio_req req; |
124 | 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 | |
125 | |
93 | for (;;) |
126 | for (;;) |
94 | { |
127 | { |
95 | pthread_mutex_lock (&reslock); |
128 | pthread_mutex_lock (&reslock); |
96 | |
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97 | req = ress; |
129 | req = ress; |
98 | |
130 | |
99 | if (ress) |
131 | if (req) |
100 | { |
132 | { |
101 | ress = ress->next; |
133 | ress = req->next; |
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134 | |
102 | if (!ress) rese = 0; |
135 | if (!ress) |
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136 | { |
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137 | /* read any signals sent by the worker threads */ |
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138 | char buf [32]; |
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139 | while (read (respipe [0], buf, 32) == 32) |
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140 | ; |
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141 | |
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142 | rese = 0; |
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143 | } |
103 | } |
144 | } |
104 | |
145 | |
105 | pthread_mutex_unlock (&reslock); |
146 | pthread_mutex_unlock (&reslock); |
106 | |
147 | |
107 | if (!req) |
148 | if (!req) |
… | |
… | |
115 | { |
156 | { |
116 | int errorno = errno; |
157 | int errorno = errno; |
117 | errno = req->errorno; |
158 | errno = req->errorno; |
118 | |
159 | |
119 | if (req->type == REQ_READ) |
160 | if (req->type == REQ_READ) |
120 | SvCUR_set (req->data, req->dataoffset |
161 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
121 | + req->result > 0 ? req->result : 0); |
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122 | |
162 | |
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163 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
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164 | SvREADONLY_off (req->data); |
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165 | |
123 | if (req->data) |
166 | 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 | { |
167 | { |
128 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
168 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
129 | PL_laststatval = req->result; |
169 | PL_laststatval = req->result; |
130 | PL_statcache = *(req->statdata); |
170 | PL_statcache = *(req->statdata); |
131 | |
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132 | Safefree (req->statdata); |
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133 | } |
171 | } |
134 | |
172 | |
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173 | ENTER; |
135 | PUSHMARK (SP); |
174 | PUSHMARK (SP); |
136 | XPUSHs (sv_2mortal (newSViv (req->result))); |
175 | XPUSHs (sv_2mortal (newSViv (req->result))); |
137 | |
176 | |
138 | if (req->type == REQ_OPEN) |
177 | if (req->type == REQ_OPEN) |
139 | { |
178 | { |
… | |
… | |
142 | |
181 | |
143 | PUTBACK; |
182 | PUTBACK; |
144 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
183 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
145 | SPAGAIN; |
184 | SPAGAIN; |
146 | |
185 | |
147 | fh = POPs; |
186 | fh = SvREFCNT_inc (POPs); |
148 | |
187 | |
149 | PUSHMARK (SP); |
188 | PUSHMARK (SP); |
150 | XPUSHs (fh); |
189 | XPUSHs (sv_2mortal (fh)); |
151 | } |
190 | } |
152 | |
191 | |
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192 | if (SvOK (req->callback)) |
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193 | { |
153 | PUTBACK; |
194 | PUTBACK; |
154 | call_sv (req->callback, G_VOID | G_EVAL); |
195 | call_sv (req->callback, G_VOID | G_EVAL); |
155 | SPAGAIN; |
196 | SPAGAIN; |
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197 | |
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198 | if (SvTRUE (ERRSV)) |
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199 | { |
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200 | free_req (req); |
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201 | croak (0); |
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202 | } |
156 | |
203 | } |
157 | if (req->callback) |
204 | |
158 | SvREFCNT_dec (req->callback); |
205 | LEAVE; |
159 | |
206 | |
160 | errno = errorno; |
207 | errno = errorno; |
161 | count++; |
208 | count++; |
162 | } |
209 | } |
163 | |
210 | |
164 | Safefree (req); |
211 | free_req (req); |
165 | } |
212 | } |
166 | |
213 | |
167 | return count; |
214 | return count; |
168 | } |
215 | } |
169 | |
216 | |
… | |
… | |
190 | } |
237 | } |
191 | |
238 | |
192 | static void |
239 | static void |
193 | send_req (aio_req req) |
240 | send_req (aio_req req) |
194 | { |
241 | { |
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242 | while (started < wanted && nreqs >= started) |
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243 | start_thread (); |
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244 | |
195 | nreqs++; |
245 | nreqs++; |
196 | |
246 | |
197 | pthread_mutex_lock (&reqlock); |
247 | pthread_mutex_lock (&reqlock); |
198 | |
248 | |
199 | req->next = 0; |
249 | req->next = 0; |
… | |
… | |
207 | reqe = reqs = req; |
257 | reqe = reqs = req; |
208 | |
258 | |
209 | pthread_cond_signal (&reqwait); |
259 | pthread_cond_signal (&reqwait); |
210 | pthread_mutex_unlock (&reqlock); |
260 | pthread_mutex_unlock (&reqlock); |
211 | |
261 | |
212 | while (nreqs > max_outstanding) |
262 | if (nreqs > max_outstanding) |
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263 | for (;;) |
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264 | { |
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265 | poll_cb (); |
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266 | |
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267 | if (nreqs <= max_outstanding) |
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268 | break; |
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269 | |
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270 | poll_wait (); |
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271 | } |
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272 | } |
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273 | |
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274 | static void |
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275 | end_thread (void) |
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276 | { |
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277 | aio_req req; |
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278 | Newz (0, req, 1, aio_cb); |
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279 | req->type = REQ_QUIT; |
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280 | |
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281 | send_req (req); |
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282 | } |
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283 | |
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284 | static void min_parallel (int nthreads) |
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285 | { |
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286 | if (wanted < nthreads) |
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287 | wanted = nthreads; |
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288 | } |
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289 | |
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290 | static void max_parallel (int nthreads) |
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291 | { |
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292 | int cur = started; |
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293 | |
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294 | if (wanted > nthreads) |
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295 | wanted = nthreads; |
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296 | |
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297 | while (cur > wanted) |
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298 | { |
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299 | end_thread (); |
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300 | cur--; |
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301 | } |
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302 | |
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303 | while (started > wanted) |
213 | { |
304 | { |
214 | poll_wait (); |
305 | poll_wait (); |
215 | poll_cb (); |
306 | poll_cb (); |
216 | } |
307 | } |
217 | } |
308 | } |
218 | |
309 | |
219 | static void |
310 | static void create_pipe () |
220 | end_thread (void) |
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221 | { |
311 | { |
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312 | if (pipe (respipe)) |
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313 | croak ("unable to initialize result pipe"); |
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314 | |
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315 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
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316 | croak ("cannot set result pipe to nonblocking mode"); |
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317 | |
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318 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
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319 | croak ("cannot set result pipe to nonblocking mode"); |
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320 | } |
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321 | |
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322 | static void atfork_prepare (void) |
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323 | { |
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324 | pthread_mutex_lock (&reqlock); |
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325 | pthread_mutex_lock (&reslock); |
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326 | } |
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327 | |
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328 | static void atfork_parent (void) |
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329 | { |
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330 | pthread_mutex_unlock (&reslock); |
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331 | pthread_mutex_unlock (&reqlock); |
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332 | } |
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333 | |
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334 | static void atfork_child (void) |
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335 | { |
222 | aio_req req; |
336 | aio_req prv; |
223 | New (0, req, 1, aio_cb); |
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224 | req->type = REQ_QUIT; |
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225 | |
337 | |
226 | send_req (req); |
338 | started = 0; |
227 | } |
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228 | |
339 | |
229 | static void |
340 | 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 | { |
341 | { |
248 | /* write: check length and adjust. */ |
342 | prv = reqs; |
249 | if (length < 0 || length + dataoffset > svlen) |
343 | reqs = prv->next; |
250 | length = svlen - dataoffset; |
344 | free_req (prv); |
251 | } |
345 | } |
252 | else |
346 | |
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347 | reqs = reqe = 0; |
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348 | |
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349 | while (ress) |
253 | { |
350 | { |
254 | /* read: grow scalar as necessary */ |
351 | prv = ress; |
255 | svptr = SvGROW (data, length + dataoffset); |
352 | ress = prv->next; |
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353 | free_req (prv); |
256 | } |
354 | } |
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355 | |
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356 | ress = rese = 0; |
257 | |
357 | |
258 | if (length < 0) |
358 | close (respipe [0]); |
259 | croak ("length must not be negative"); |
359 | close (respipe [1]); |
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360 | create_pipe (); |
260 | |
361 | |
261 | Newz (0, req, 1, aio_cb); |
362 | 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 | } |
363 | } |
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364 | |
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365 | /* currently noops */ |
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366 | #define LOCK_FD(fd) do { } while (0) |
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367 | #define UNLOCK_FD(fd) do { } while (0) |
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368 | |
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369 | /*****************************************************************************/ |
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370 | /* work around various missing functions */ |
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371 | |
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372 | #if !HAVE_PREADWRITE |
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373 | # define pread aio_pread |
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374 | # define pwrite aio_pwrite |
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375 | |
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376 | /* |
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377 | * make our pread/pwrite safe against themselves, but not against |
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378 | * normal read/write by using a mutex. slows down execution a lot, |
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379 | * but that's your problem, not mine. |
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380 | */ |
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381 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
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382 | |
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383 | static ssize_t |
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384 | pread (int fd, void *buf, size_t count, off_t offset) |
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385 | { |
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386 | ssize_t res; |
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387 | off_t ooffset; |
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388 | |
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389 | LOCK_FD (fd); |
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390 | pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */ |
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391 | ooffset = lseek (fd, 0, SEEK_CUR); |
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392 | lseek (fd, offset, SEEK_SET); |
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393 | res = read (fd, buf, count); |
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394 | lseek (fd, ooffset, SEEK_SET); |
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395 | pthread_mutex_unlock (&iolock); |
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396 | UNLOCK_FD (d); |
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397 | |
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398 | return res; |
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399 | } |
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400 | |
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401 | static ssize_t |
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402 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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403 | { |
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404 | ssize_t res; |
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405 | off_t ooffset; |
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406 | |
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407 | LOCK_FD (fd); |
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408 | pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */ |
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409 | ooffset = lseek (fd, 0, SEEK_CUR); |
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410 | lseek (fd, offset, SEEK_SET); |
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411 | res = write (fd, buf, count); |
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412 | lseek (fd, offset, SEEK_SET); |
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413 | pthread_mutex_unlock (&iolock); |
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414 | UNLOCK_FD (d); |
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415 | |
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416 | return res; |
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417 | } |
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418 | #endif |
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419 | |
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420 | #if !HAVE_FDATASYNC |
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421 | # define fdatasync fsync |
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|
422 | #endif |
|
|
423 | |
|
|
424 | #if !HAVE_READAHEAD |
|
|
425 | # define readahead aio_readahead |
|
|
426 | |
|
|
427 | static char readahead_buf[4096]; |
|
|
428 | |
|
|
429 | static ssize_t |
|
|
430 | readahead (int fd, off_t offset, size_t count) |
|
|
431 | { |
|
|
432 | while (count > 0) |
|
|
433 | { |
|
|
434 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
|
|
435 | |
|
|
436 | pread (fd, readahead_buf, len, offset); |
|
|
437 | offset += len; |
|
|
438 | count -= len; |
|
|
439 | } |
|
|
440 | |
|
|
441 | errno = 0; |
|
|
442 | } |
|
|
443 | #endif |
|
|
444 | |
|
|
445 | /* sendfile always needs emulation */ |
|
|
446 | static ssize_t |
|
|
447 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
448 | { |
|
|
449 | ssize_t res; |
|
|
450 | |
|
|
451 | if (!count) |
|
|
452 | return 0; |
|
|
453 | |
|
|
454 | LOCK_FD (ofd); |
|
|
455 | |
|
|
456 | #if HAVE_SENDFILE |
|
|
457 | # if __linux |
|
|
458 | res = sendfile (ofd, ifd, &offset, count); |
|
|
459 | |
|
|
460 | # elif __freebsd |
|
|
461 | /* |
|
|
462 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
463 | * wasted on making it similar to other I/O functions. |
|
|
464 | */ |
|
|
465 | { |
|
|
466 | off_t sbytes; |
|
|
467 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
468 | |
|
|
469 | if (res < 0 && sbytes) |
|
|
470 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
471 | res = sbytes; |
|
|
472 | } |
|
|
473 | |
|
|
474 | # elif __hpux |
|
|
475 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
476 | |
|
|
477 | # elif __solaris |
|
|
478 | { |
|
|
479 | struct sendfilevec vec; |
|
|
480 | size_t sbytes; |
|
|
481 | |
|
|
482 | vec.sfv_fd = ifd; |
|
|
483 | vec.sfv_flag = 0; |
|
|
484 | vec.sfv_off = offset; |
|
|
485 | vec.sfv_len = count; |
|
|
486 | |
|
|
487 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
488 | |
|
|
489 | if (res < 0 && sbytes) |
|
|
490 | res = sbytes; |
|
|
491 | } |
|
|
492 | |
|
|
493 | # else |
|
|
494 | res = -1; |
|
|
495 | errno = ENOSYS; |
|
|
496 | # endif |
|
|
497 | #endif |
|
|
498 | |
|
|
499 | if (res < 0 |
|
|
500 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
501 | #if __solaris |
|
|
502 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
503 | #endif |
|
|
504 | ) |
|
|
505 | ) |
|
|
506 | { |
|
|
507 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
508 | char *buf = malloc (4096); |
|
|
509 | res = 0; |
|
|
510 | |
|
|
511 | for (;;) |
|
|
512 | { |
|
|
513 | ssize_t cnt; |
|
|
514 | |
|
|
515 | cnt = pread (ifd, buf, 4096, offset); |
|
|
516 | |
|
|
517 | if (cnt <= 0) |
|
|
518 | { |
|
|
519 | if (cnt && !res) res = -1; |
|
|
520 | break; |
|
|
521 | } |
|
|
522 | |
|
|
523 | cnt = write (ofd, buf, cnt); |
|
|
524 | |
|
|
525 | if (cnt <= 0) |
|
|
526 | { |
|
|
527 | if (cnt && !res) res = -1; |
|
|
528 | break; |
|
|
529 | } |
|
|
530 | |
|
|
531 | offset += cnt; |
|
|
532 | res += cnt; |
|
|
533 | } |
|
|
534 | |
|
|
535 | { |
|
|
536 | int errorno = errno; |
|
|
537 | free (buf); |
|
|
538 | errno = errorno; |
|
|
539 | } |
|
|
540 | } |
|
|
541 | |
|
|
542 | UNLOCK_FD (ofd); |
|
|
543 | |
|
|
544 | return res; |
|
|
545 | } |
|
|
546 | |
|
|
547 | /*****************************************************************************/ |
276 | |
548 | |
277 | static void * |
549 | static void * |
278 | aio_proc (void *thr_arg) |
550 | aio_proc (void *thr_arg) |
279 | { |
551 | { |
280 | aio_req req; |
552 | aio_req req; |
… | |
… | |
306 | |
578 | |
307 | type = req->type; |
579 | type = req->type; |
308 | |
580 | |
309 | switch (type) |
581 | switch (type) |
310 | { |
582 | { |
311 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
583 | 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; |
584 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
313 | #if SYS_readahead |
585 | |
314 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
586 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
315 | #else |
587 | 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 | |
588 | |
319 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
589 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
320 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
590 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
321 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
591 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
322 | |
592 | |
323 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
593 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
324 | case REQ_CLOSE: req->result = close (req->fd); break; |
594 | case REQ_CLOSE: req->result = close (req->fd); break; |
325 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
595 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
596 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
597 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
326 | |
598 | |
|
|
599 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
327 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
600 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
328 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
329 | |
601 | |
330 | case REQ_QUIT: |
602 | case REQ_QUIT: |
331 | break; |
603 | break; |
332 | |
604 | |
333 | default: |
605 | default: |
… | |
… | |
359 | while (type != REQ_QUIT); |
631 | while (type != REQ_QUIT); |
360 | |
632 | |
361 | return 0; |
633 | return 0; |
362 | } |
634 | } |
363 | |
635 | |
|
|
636 | #define dREQ \ |
|
|
637 | aio_req req; \ |
|
|
638 | \ |
|
|
639 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
640 | croak ("clalback must be undef or of reference type"); \ |
|
|
641 | \ |
|
|
642 | Newz (0, req, 1, aio_cb); \ |
|
|
643 | if (!req) \ |
|
|
644 | croak ("out of memory during aio_req allocation"); \ |
|
|
645 | \ |
|
|
646 | req->callback = newSVsv (callback); |
|
|
647 | |
364 | MODULE = IO::AIO PACKAGE = IO::AIO |
648 | MODULE = IO::AIO PACKAGE = IO::AIO |
365 | |
649 | |
|
|
650 | PROTOTYPES: ENABLE |
|
|
651 | |
366 | BOOT: |
652 | BOOT: |
367 | { |
653 | { |
368 | if (pipe (respipe)) |
654 | create_pipe (); |
369 | croak ("unable to initialize result pipe"); |
655 | 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 | } |
656 | } |
377 | |
657 | |
378 | void |
658 | void |
379 | min_parallel(nthreads) |
659 | min_parallel(nthreads) |
380 | int nthreads |
660 | int nthreads |
381 | PROTOTYPE: $ |
661 | PROTOTYPE: $ |
382 | CODE: |
|
|
383 | while (nthreads > started) |
|
|
384 | start_thread (); |
|
|
385 | |
662 | |
386 | void |
663 | void |
387 | max_parallel(nthreads) |
664 | max_parallel(nthreads) |
388 | int nthreads |
665 | int nthreads |
389 | PROTOTYPE: $ |
666 | 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 | |
667 | |
406 | int |
668 | int |
407 | max_outstanding(nreqs) |
669 | max_outstanding(nreqs) |
408 | int nreqs |
670 | int nreqs |
409 | PROTOTYPE: $ |
671 | PROTOTYPE: $ |
410 | CODE: |
672 | CODE: |
411 | RETVAL = max_outstanding; |
673 | RETVAL = max_outstanding; |
412 | max_outstanding = nreqs; |
674 | max_outstanding = nreqs; |
413 | |
675 | |
414 | void |
676 | void |
415 | aio_open(pathname,flags,mode,callback) |
677 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
416 | SV * pathname |
678 | SV * pathname |
417 | int flags |
679 | int flags |
418 | int mode |
680 | int mode |
419 | SV * callback |
681 | SV * callback |
420 | PROTOTYPE: $$$$ |
682 | PROTOTYPE: $$$;$ |
421 | CODE: |
683 | CODE: |
422 | { |
684 | { |
423 | aio_req req; |
685 | dREQ; |
424 | |
|
|
425 | Newz (0, req, 1, aio_cb); |
|
|
426 | |
|
|
427 | if (!req) |
|
|
428 | croak ("out of memory during aio_req allocation"); |
|
|
429 | |
686 | |
430 | req->type = REQ_OPEN; |
687 | req->type = REQ_OPEN; |
431 | req->data = newSVsv (pathname); |
688 | req->data = newSVsv (pathname); |
432 | req->dataptr = SvPV_nolen (req->data); |
689 | req->dataptr = SvPVbyte_nolen (req->data); |
433 | req->fd = flags; |
690 | req->fd = flags; |
434 | req->mode = mode; |
691 | req->mode = mode; |
435 | req->callback = SvREFCNT_inc (callback); |
|
|
436 | |
692 | |
437 | send_req (req); |
693 | send_req (req); |
438 | } |
694 | } |
439 | |
695 | |
440 | void |
696 | void |
441 | aio_close(fh,callback) |
697 | aio_close(fh,callback=&PL_sv_undef) |
442 | InputStream fh |
698 | SV * fh |
443 | SV * callback |
699 | SV * callback |
444 | PROTOTYPE: $$ |
700 | PROTOTYPE: $;$ |
445 | ALIAS: |
701 | ALIAS: |
446 | aio_close = REQ_CLOSE |
702 | aio_close = REQ_CLOSE |
447 | aio_fsync = REQ_FSYNC |
703 | aio_fsync = REQ_FSYNC |
448 | aio_fdatasync = REQ_FDATASYNC |
704 | aio_fdatasync = REQ_FDATASYNC |
449 | CODE: |
705 | CODE: |
450 | { |
706 | { |
|
|
707 | dREQ; |
|
|
708 | |
|
|
709 | req->type = ix; |
|
|
710 | req->fh = newSVsv (fh); |
|
|
711 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
712 | |
|
|
713 | send_req (req); |
|
|
714 | } |
|
|
715 | |
|
|
716 | void |
|
|
717 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
718 | SV * fh |
|
|
719 | UV offset |
|
|
720 | UV length |
|
|
721 | SV * data |
|
|
722 | UV dataoffset |
|
|
723 | SV * callback |
|
|
724 | ALIAS: |
|
|
725 | aio_read = REQ_READ |
|
|
726 | aio_write = REQ_WRITE |
|
|
727 | PROTOTYPE: $$$$$;$ |
|
|
728 | CODE: |
|
|
729 | { |
451 | aio_req req; |
730 | aio_req req; |
|
|
731 | STRLEN svlen; |
|
|
732 | char *svptr = SvPVbyte (data, svlen); |
452 | |
733 | |
453 | Newz (0, req, 1, aio_cb); |
734 | SvUPGRADE (data, SVt_PV); |
|
|
735 | SvPOK_on (data); |
454 | |
736 | |
455 | if (!req) |
737 | if (dataoffset < 0) |
456 | croak ("out of memory during aio_req allocation"); |
738 | dataoffset += svlen; |
457 | |
739 | |
458 | req->type = ix; |
740 | if (dataoffset < 0 || dataoffset > svlen) |
459 | req->fd = PerlIO_fileno (fh); |
741 | croak ("data offset outside of string"); |
460 | req->callback = SvREFCNT_inc (callback); |
|
|
461 | |
742 | |
462 | send_req (req); |
743 | if (ix == REQ_WRITE) |
463 | } |
744 | { |
464 | |
745 | /* write: check length and adjust. */ |
465 | void |
746 | if (length < 0 || length + dataoffset > svlen) |
466 | aio_read(fh,offset,length,data,dataoffset,callback) |
747 | length = svlen - dataoffset; |
467 | InputStream fh |
748 | } |
468 | UV offset |
749 | else |
469 | IV length |
750 | { |
470 | SV * data |
751 | /* read: grow scalar as necessary */ |
471 | IV dataoffset |
752 | svptr = SvGROW (data, length + dataoffset); |
472 | SV * callback |
753 | } |
473 | PROTOTYPE: $$$$$$ |
|
|
474 | CODE: |
|
|
475 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
476 | |
|
|
477 | void |
|
|
478 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
479 | OutputStream fh |
|
|
480 | UV offset |
|
|
481 | IV length |
|
|
482 | SV * data |
|
|
483 | IV dataoffset |
|
|
484 | SV * callback |
|
|
485 | PROTOTYPE: $$$$$$ |
|
|
486 | CODE: |
|
|
487 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
488 | |
|
|
489 | void |
|
|
490 | aio_readahead(fh,offset,length,callback) |
|
|
491 | InputStream fh |
|
|
492 | UV offset |
|
|
493 | IV length |
|
|
494 | SV * callback |
|
|
495 | PROTOTYPE: $$$$ |
|
|
496 | CODE: |
|
|
497 | { |
|
|
498 | aio_req req; |
|
|
499 | |
754 | |
500 | if (length < 0) |
755 | if (length < 0) |
501 | croak ("length must not be negative"); |
756 | croak ("length must not be negative"); |
502 | |
757 | |
503 | Newz (0, req, 1, aio_cb); |
758 | { |
|
|
759 | dREQ; |
504 | |
760 | |
505 | if (!req) |
761 | req->type = ix; |
506 | croak ("out of memory during aio_req allocation"); |
762 | req->fh = newSVsv (fh); |
|
|
763 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
764 | : IoOFP (sv_2io (fh))); |
|
|
765 | req->offset = offset; |
|
|
766 | req->length = length; |
|
|
767 | req->data = SvREFCNT_inc (data); |
|
|
768 | req->dataptr = (char *)svptr + dataoffset; |
|
|
769 | |
|
|
770 | if (!SvREADONLY (data)) |
|
|
771 | { |
|
|
772 | SvREADONLY_on (data); |
|
|
773 | req->data2ptr = (void *)data; |
|
|
774 | } |
|
|
775 | |
|
|
776 | send_req (req); |
|
|
777 | } |
|
|
778 | } |
|
|
779 | |
|
|
780 | void |
|
|
781 | aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
782 | SV * out_fh |
|
|
783 | SV * in_fh |
|
|
784 | UV in_offset |
|
|
785 | UV length |
|
|
786 | SV * callback |
|
|
787 | PROTOTYPE: $$$$;$ |
|
|
788 | CODE: |
|
|
789 | { |
|
|
790 | dREQ; |
|
|
791 | |
|
|
792 | req->type = REQ_SENDFILE; |
|
|
793 | req->fh = newSVsv (out_fh); |
|
|
794 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
795 | req->fh2 = newSVsv (in_fh); |
|
|
796 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
797 | req->offset = in_offset; |
|
|
798 | req->length = length; |
|
|
799 | |
|
|
800 | send_req (req); |
|
|
801 | } |
|
|
802 | |
|
|
803 | void |
|
|
804 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
805 | SV * fh |
|
|
806 | UV offset |
|
|
807 | IV length |
|
|
808 | SV * callback |
|
|
809 | PROTOTYPE: $$$;$ |
|
|
810 | CODE: |
|
|
811 | { |
|
|
812 | dREQ; |
507 | |
813 | |
508 | req->type = REQ_READAHEAD; |
814 | req->type = REQ_READAHEAD; |
|
|
815 | req->fh = newSVsv (fh); |
509 | req->fd = PerlIO_fileno (fh); |
816 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
510 | req->offset = offset; |
817 | req->offset = offset; |
511 | req->length = length; |
818 | req->length = length; |
512 | req->callback = SvREFCNT_inc (callback); |
|
|
513 | |
819 | |
514 | send_req (req); |
820 | send_req (req); |
515 | } |
821 | } |
516 | |
822 | |
517 | void |
823 | void |
518 | aio_stat(fh_or_path,callback) |
824 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
519 | SV * fh_or_path |
825 | SV * fh_or_path |
520 | SV * callback |
826 | SV * callback |
521 | PROTOTYPE: $$ |
|
|
522 | ALIAS: |
827 | ALIAS: |
|
|
828 | aio_stat = REQ_STAT |
523 | aio_lstat = 1 |
829 | aio_lstat = REQ_LSTAT |
524 | CODE: |
830 | CODE: |
525 | { |
831 | { |
526 | aio_req req; |
832 | dREQ; |
527 | |
|
|
528 | Newz (0, req, 1, aio_cb); |
|
|
529 | |
|
|
530 | if (!req) |
|
|
531 | croak ("out of memory during aio_req allocation"); |
|
|
532 | |
833 | |
533 | New (0, req->statdata, 1, Stat_t); |
834 | New (0, req->statdata, 1, Stat_t); |
534 | |
|
|
535 | if (!req->statdata) |
835 | if (!req->statdata) |
|
|
836 | { |
|
|
837 | free_req (req); |
536 | croak ("out of memory during aio_req->statdata allocation"); |
838 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
839 | } |
537 | |
840 | |
538 | if (SvPOK (fh_or_path)) |
841 | if (SvPOK (fh_or_path)) |
539 | { |
842 | { |
540 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
843 | req->type = ix; |
541 | req->data = newSVsv (fh_or_path); |
844 | req->data = newSVsv (fh_or_path); |
542 | req->dataptr = SvPV_nolen (req->data); |
845 | req->dataptr = SvPVbyte_nolen (req->data); |
543 | } |
846 | } |
544 | else |
847 | else |
545 | { |
848 | { |
546 | req->type = REQ_FSTAT; |
849 | req->type = REQ_FSTAT; |
|
|
850 | req->fh = newSVsv (fh_or_path); |
547 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
851 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
548 | } |
852 | } |
549 | |
853 | |
550 | req->callback = SvREFCNT_inc (callback); |
|
|
551 | |
|
|
552 | send_req (req); |
854 | send_req (req); |
553 | } |
855 | } |
554 | |
856 | |
555 | void |
857 | void |
556 | aio_unlink(pathname,callback) |
858 | aio_unlink(pathname,callback=&PL_sv_undef) |
557 | SV * pathname |
859 | SV * pathname |
558 | SV * callback |
860 | SV * callback |
559 | PROTOTYPE: $$ |
861 | ALIAS: |
|
|
862 | aio_unlink = REQ_UNLINK |
|
|
863 | aio_rmdir = REQ_RMDIR |
560 | CODE: |
864 | CODE: |
561 | { |
865 | { |
562 | aio_req req; |
866 | dREQ; |
563 | |
867 | |
564 | Newz (0, req, 1, aio_cb); |
868 | req->type = ix; |
565 | |
|
|
566 | if (!req) |
|
|
567 | croak ("out of memory during aio_req allocation"); |
|
|
568 | |
|
|
569 | req->type = REQ_UNLINK; |
|
|
570 | req->data = newSVsv (pathname); |
869 | req->data = newSVsv (pathname); |
571 | req->dataptr = SvPV_nolen (req->data); |
870 | req->dataptr = SvPVbyte_nolen (req->data); |
572 | req->callback = SvREFCNT_inc (callback); |
|
|
573 | |
871 | |
574 | send_req (req); |
872 | send_req (req); |
575 | } |
873 | } |
|
|
874 | |
|
|
875 | void |
|
|
876 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
877 | SV * oldpath |
|
|
878 | SV * newpath |
|
|
879 | SV * callback |
|
|
880 | CODE: |
|
|
881 | { |
|
|
882 | dREQ; |
|
|
883 | |
|
|
884 | req->type = REQ_SYMLINK; |
|
|
885 | req->fh = newSVsv (oldpath); |
|
|
886 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
887 | req->data = newSVsv (newpath); |
|
|
888 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
889 | |
|
|
890 | send_req (req); |
|
|
891 | } |
|
|
892 | |
|
|
893 | void |
|
|
894 | flush() |
|
|
895 | PROTOTYPE: |
|
|
896 | CODE: |
|
|
897 | while (nreqs) |
|
|
898 | { |
|
|
899 | poll_wait (); |
|
|
900 | poll_cb (); |
|
|
901 | } |
|
|
902 | |
|
|
903 | void |
|
|
904 | poll() |
|
|
905 | PROTOTYPE: |
|
|
906 | CODE: |
|
|
907 | if (nreqs) |
|
|
908 | { |
|
|
909 | poll_wait (); |
|
|
910 | poll_cb (); |
|
|
911 | } |
576 | |
912 | |
577 | int |
913 | int |
578 | poll_fileno() |
914 | poll_fileno() |
579 | PROTOTYPE: |
915 | PROTOTYPE: |
580 | CODE: |
916 | CODE: |