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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 | |
5 | #include <sys/types.h> |
10 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
11 | #include <sys/stat.h> |
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12 | |
7 | #include <unistd.h> |
13 | #include <unistd.h> |
8 | #include <fcntl.h> |
14 | #include <fcntl.h> |
9 | #include <signal.h> |
15 | #include <signal.h> |
10 | #include <sched.h> |
16 | #include <sched.h> |
11 | #include <endian.h> |
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12 | |
17 | |
13 | #include <pthread.h> |
18 | #include <pthread.h> |
14 | #include <sys/syscall.h> |
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15 | |
19 | |
16 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
17 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
18 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
19 | |
23 | |
… | |
… | |
25 | |
29 | |
26 | enum { |
30 | enum { |
27 | REQ_QUIT, |
31 | REQ_QUIT, |
28 | REQ_OPEN, REQ_CLOSE, |
32 | REQ_OPEN, REQ_CLOSE, |
29 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
30 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
31 | REQ_FSYNC, REQ_FDATASYNC, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
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36 | REQ_UNLINK, REQ_RMDIR, |
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37 | REQ_SYMLINK, |
32 | }; |
38 | }; |
33 | |
39 | |
34 | typedef struct aio_cb { |
40 | typedef struct aio_cb { |
35 | struct aio_cb *volatile next; |
41 | struct aio_cb *volatile next; |
36 | |
42 | |
… | |
… | |
40 | off_t offset; |
46 | off_t offset; |
41 | size_t length; |
47 | size_t length; |
42 | ssize_t result; |
48 | ssize_t result; |
43 | mode_t mode; /* open */ |
49 | mode_t mode; /* open */ |
44 | int errorno; |
50 | int errorno; |
45 | SV *data, *callback; |
51 | SV *data, *callback, *fh; |
46 | void *dataptr; |
52 | void *dataptr, *data2ptr; |
47 | STRLEN dataoffset; |
53 | STRLEN dataoffset; |
48 | |
54 | |
49 | Stat_t *statdata; |
55 | Stat_t *statdata; |
50 | } aio_cb; |
56 | } aio_cb; |
51 | |
57 | |
52 | typedef aio_cb *aio_req; |
58 | typedef aio_cb *aio_req; |
53 | |
59 | |
54 | static int started; |
60 | static int started, wanted; |
55 | static int nreqs; |
61 | static volatile int nreqs; |
56 | static int max_outstanding = 1<<30; |
62 | static int max_outstanding = 1<<30; |
57 | static int respipe [2]; |
63 | static int respipe [2]; |
58 | |
64 | |
59 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
60 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
67 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
62 | |
68 | |
63 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
69 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
64 | static volatile aio_req ress, rese; /* queue start, queue end */ |
70 | static volatile aio_req ress, rese; /* queue start, queue end */ |
65 | |
71 | |
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72 | static void free_req (aio_req req) |
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73 | { |
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74 | if (req->data) |
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75 | SvREFCNT_dec (req->data); |
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76 | |
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77 | if (req->fh) |
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78 | SvREFCNT_dec (req->fh); |
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79 | |
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80 | if (req->statdata) |
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81 | Safefree (req->statdata); |
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82 | |
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83 | if (req->callback) |
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84 | SvREFCNT_dec (req->callback); |
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85 | |
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86 | Safefree (req); |
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87 | } |
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88 | |
66 | static void |
89 | static void |
67 | poll_wait () |
90 | poll_wait () |
68 | { |
91 | { |
69 | if (!nreqs) |
92 | if (nreqs && !ress) |
70 | return; |
93 | { |
71 | |
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72 | fd_set rfd; |
94 | fd_set rfd; |
73 | FD_ZERO(&rfd); |
95 | FD_ZERO(&rfd); |
74 | FD_SET(respipe [0], &rfd); |
96 | FD_SET(respipe [0], &rfd); |
75 | |
97 | |
76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
98 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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99 | } |
77 | } |
100 | } |
78 | |
101 | |
79 | static int |
102 | static int |
80 | poll_cb () |
103 | poll_cb () |
81 | { |
104 | { |
82 | dSP; |
105 | dSP; |
83 | int count = 0; |
106 | int count = 0; |
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107 | int do_croak = 0; |
84 | aio_req req; |
108 | 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 | |
109 | |
93 | for (;;) |
110 | for (;;) |
94 | { |
111 | { |
95 | pthread_mutex_lock (&reslock); |
112 | pthread_mutex_lock (&reslock); |
96 | |
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97 | req = ress; |
113 | req = ress; |
98 | |
114 | |
99 | if (ress) |
115 | if (req) |
100 | { |
116 | { |
101 | ress = ress->next; |
117 | ress = req->next; |
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118 | |
102 | if (!ress) rese = 0; |
119 | if (!ress) |
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120 | { |
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121 | /* read any signals sent by the worker threads */ |
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122 | char buf [32]; |
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123 | while (read (respipe [0], buf, 32) == 32) |
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124 | ; |
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125 | |
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126 | rese = 0; |
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127 | } |
103 | } |
128 | } |
104 | |
129 | |
105 | pthread_mutex_unlock (&reslock); |
130 | pthread_mutex_unlock (&reslock); |
106 | |
131 | |
107 | if (!req) |
132 | if (!req) |
… | |
… | |
115 | { |
140 | { |
116 | int errorno = errno; |
141 | int errorno = errno; |
117 | errno = req->errorno; |
142 | errno = req->errorno; |
118 | |
143 | |
119 | if (req->type == REQ_READ) |
144 | if (req->type == REQ_READ) |
120 | SvCUR_set (req->data, req->dataoffset |
145 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
121 | + req->result > 0 ? req->result : 0); |
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122 | |
146 | |
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147 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
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148 | SvREADONLY_off (req->data); |
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149 | |
123 | if (req->data) |
150 | 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 | { |
151 | { |
128 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
152 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
129 | PL_laststatval = req->result; |
153 | PL_laststatval = req->result; |
130 | PL_statcache = *(req->statdata); |
154 | PL_statcache = *(req->statdata); |
131 | |
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132 | Safefree (req->statdata); |
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133 | } |
155 | } |
134 | |
156 | |
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157 | ENTER; |
135 | PUSHMARK (SP); |
158 | PUSHMARK (SP); |
136 | XPUSHs (sv_2mortal (newSViv (req->result))); |
159 | XPUSHs (sv_2mortal (newSViv (req->result))); |
137 | |
160 | |
138 | if (req->type == REQ_OPEN) |
161 | if (req->type == REQ_OPEN) |
139 | { |
162 | { |
… | |
… | |
142 | |
165 | |
143 | PUTBACK; |
166 | PUTBACK; |
144 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
167 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
145 | SPAGAIN; |
168 | SPAGAIN; |
146 | |
169 | |
147 | fh = POPs; |
170 | fh = SvREFCNT_inc (POPs); |
148 | |
171 | |
149 | PUSHMARK (SP); |
172 | PUSHMARK (SP); |
150 | XPUSHs (fh); |
173 | XPUSHs (sv_2mortal (fh)); |
151 | } |
174 | } |
152 | |
175 | |
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176 | if (SvOK (req->callback)) |
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177 | { |
153 | PUTBACK; |
178 | PUTBACK; |
154 | call_sv (req->callback, G_VOID | G_EVAL); |
179 | call_sv (req->callback, G_VOID | G_EVAL); |
155 | SPAGAIN; |
180 | SPAGAIN; |
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181 | |
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182 | if (SvTRUE (ERRSV)) |
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183 | { |
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184 | free_req (req); |
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185 | croak (0); |
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186 | } |
156 | |
187 | } |
157 | if (req->callback) |
188 | |
158 | SvREFCNT_dec (req->callback); |
189 | LEAVE; |
159 | |
190 | |
160 | errno = errorno; |
191 | errno = errorno; |
161 | count++; |
192 | count++; |
162 | } |
193 | } |
163 | |
194 | |
164 | Safefree (req); |
195 | free_req (req); |
165 | } |
196 | } |
166 | |
197 | |
167 | return count; |
198 | return count; |
168 | } |
199 | } |
169 | |
200 | |
… | |
… | |
176 | pthread_t tid; |
207 | pthread_t tid; |
177 | pthread_attr_t attr; |
208 | pthread_attr_t attr; |
178 | |
209 | |
179 | pthread_attr_init (&attr); |
210 | pthread_attr_init (&attr); |
180 | pthread_attr_setstacksize (&attr, STACKSIZE); |
211 | pthread_attr_setstacksize (&attr, STACKSIZE); |
181 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
212 | // pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
182 | |
213 | |
183 | sigfillset (&fullsigset); |
214 | sigfillset (&fullsigset); |
184 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
215 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
185 | |
216 | |
186 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
217 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
… | |
… | |
190 | } |
221 | } |
191 | |
222 | |
192 | static void |
223 | static void |
193 | send_req (aio_req req) |
224 | send_req (aio_req req) |
194 | { |
225 | { |
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226 | while (started < wanted && nreqs >= started) |
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227 | start_thread (); |
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228 | |
195 | nreqs++; |
229 | nreqs++; |
196 | |
230 | |
197 | pthread_mutex_lock (&reqlock); |
231 | pthread_mutex_lock (&reqlock); |
198 | |
232 | |
199 | req->next = 0; |
233 | req->next = 0; |
… | |
… | |
207 | reqe = reqs = req; |
241 | reqe = reqs = req; |
208 | |
242 | |
209 | pthread_cond_signal (&reqwait); |
243 | pthread_cond_signal (&reqwait); |
210 | pthread_mutex_unlock (&reqlock); |
244 | pthread_mutex_unlock (&reqlock); |
211 | |
245 | |
212 | while (nreqs > max_outstanding) |
246 | if (nreqs > max_outstanding) |
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247 | for (;;) |
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248 | { |
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249 | poll_cb (); |
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250 | |
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251 | if (nreqs <= max_outstanding) |
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252 | break; |
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253 | |
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254 | poll_wait (); |
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255 | } |
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256 | } |
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257 | |
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258 | static void |
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259 | end_thread (void) |
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260 | { |
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261 | aio_req req; |
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262 | Newz (0, req, 1, aio_cb); |
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263 | req->type = REQ_QUIT; |
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264 | |
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265 | send_req (req); |
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266 | } |
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267 | |
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268 | static void min_parallel (int nthreads) |
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269 | { |
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270 | if (wanted < nthreads) |
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271 | wanted = nthreads; |
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272 | } |
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273 | |
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274 | static void max_parallel (int nthreads) |
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275 | { |
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276 | int cur = started; |
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277 | |
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278 | if (wanted > nthreads) |
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279 | wanted = nthreads; |
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280 | |
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281 | while (cur > wanted) |
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282 | { |
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283 | end_thread (); |
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284 | cur--; |
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285 | } |
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286 | |
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287 | while (started > wanted) |
213 | { |
288 | { |
214 | poll_wait (); |
289 | poll_wait (); |
215 | poll_cb (); |
290 | poll_cb (); |
216 | } |
291 | } |
217 | } |
292 | } |
218 | |
293 | |
219 | static void |
294 | static void create_pipe () |
220 | end_thread (void) |
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221 | { |
295 | { |
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296 | if (pipe (respipe)) |
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297 | croak ("unable to initialize result pipe"); |
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298 | |
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299 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
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300 | croak ("cannot set result pipe to nonblocking mode"); |
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301 | |
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302 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
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303 | croak ("cannot set result pipe to nonblocking mode"); |
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304 | } |
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305 | |
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306 | static void atfork_prepare (void) |
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307 | { |
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308 | pthread_mutex_lock (&reqlock); |
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309 | pthread_mutex_lock (&reslock); |
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310 | } |
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311 | |
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312 | static void atfork_parent (void) |
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313 | { |
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314 | pthread_mutex_unlock (&reslock); |
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315 | pthread_mutex_unlock (&reqlock); |
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316 | } |
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317 | |
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318 | static void atfork_child (void) |
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319 | { |
222 | aio_req req; |
320 | aio_req prv; |
223 | New (0, req, 1, aio_cb); |
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224 | req->type = REQ_QUIT; |
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225 | |
321 | |
226 | send_req (req); |
322 | started = 0; |
227 | } |
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228 | |
323 | |
229 | static void |
324 | while (reqs) |
230 | read_write (int dowrite, int fd, off_t offset, size_t length, |
325 | { |
231 | SV *data, STRLEN dataoffset, SV *callback) |
326 | prv = reqs; |
232 | { |
327 | reqs = prv->next; |
233 | aio_req req; |
328 | free_req (prv); |
234 | STRLEN svlen; |
329 | } |
235 | char *svptr = SvPV (data, svlen); |
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236 | |
330 | |
237 | SvUPGRADE (data, SVt_PV); |
331 | reqs = reqe = 0; |
238 | SvPOK_on (data); |
332 | |
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333 | while (ress) |
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334 | { |
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335 | prv = ress; |
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336 | ress = prv->next; |
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337 | free_req (prv); |
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338 | } |
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339 | |
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340 | ress = rese = 0; |
239 | |
341 | |
240 | if (dataoffset < 0) |
342 | close (respipe [0]); |
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343 | close (respipe [1]); |
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344 | create_pipe (); |
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345 | |
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346 | atfork_parent (); |
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347 | } |
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348 | |
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349 | /*****************************************************************************/ |
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350 | /* work around various missing functions */ |
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351 | |
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352 | #if !HAVE_PREADWRITE |
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353 | # define pread aio_pread |
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354 | # define pwrite aio_pwrite |
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355 | |
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356 | /* |
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357 | * make our pread/pwrite safe against themselves, but not against |
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358 | * normal read/write by using a mutex. slows down execution a lot, |
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359 | * but that's your problem, not mine. |
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360 | */ |
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361 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
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362 | |
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363 | static ssize_t |
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364 | pread (int fd, void *buf, size_t count, off_t offset) |
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365 | { |
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366 | ssize_t res; |
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367 | off_t ooffset; |
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368 | |
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369 | pthread_mutex_lock (&iolock); |
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370 | ooffset = lseek (fd, 0, SEEK_CUR); |
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371 | lseek (fd, offset, SEEK_SET); |
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372 | res = read (fd, buf, count); |
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373 | lseek (fd, ooffset, SEEK_SET); |
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374 | pthread_mutex_unlock (&iolock); |
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375 | |
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376 | return res; |
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377 | } |
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378 | |
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379 | static ssize_t |
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380 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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381 | { |
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382 | ssize_t res; |
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383 | off_t ooffset; |
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384 | |
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385 | pthread_mutex_lock (&iolock); |
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386 | ooffset = lseek (fd, 0, SEEK_CUR); |
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387 | lseek (fd, offset, SEEK_SET); |
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388 | res = write (fd, buf, count); |
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389 | lseek (fd, offset, SEEK_SET); |
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390 | pthread_mutex_unlock (&iolock); |
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391 | |
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392 | return res; |
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393 | } |
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394 | #endif |
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395 | |
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396 | #if !HAVE_FDATASYNC |
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397 | # define fdatasync fsync |
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398 | #endif |
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399 | |
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400 | #if !HAVE_READAHEAD |
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401 | # define readahead aio_readahead |
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402 | |
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403 | static char readahead_buf[4096]; |
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404 | |
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405 | static ssize_t |
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406 | readahead (int fd, off_t offset, size_t count) |
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407 | { |
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408 | while (count > 0) |
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409 | { |
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410 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
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411 | |
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412 | pread (fd, readahead_buf, len, offset); |
241 | dataoffset += svlen; |
413 | offset += len; |
242 | |
414 | count -= len; |
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 | { |
415 | } |
248 | /* write: check length and adjust. */ |
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249 | if (length < 0 || length + dataoffset > svlen) |
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250 | length = svlen - dataoffset; |
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251 | } |
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252 | else |
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253 | { |
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254 | /* read: grow scalar as necessary */ |
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255 | svptr = SvGROW (data, length + dataoffset); |
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256 | } |
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257 | |
416 | |
258 | if (length < 0) |
417 | errno = 0; |
259 | croak ("length must not be negative"); |
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260 | |
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261 | Newz (0, req, 1, aio_cb); |
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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; |
|
|
269 | req->length = length; |
|
|
270 | req->data = SvREFCNT_inc (data); |
|
|
271 | req->dataptr = (char *)svptr + dataoffset; |
|
|
272 | req->callback = SvREFCNT_inc (callback); |
|
|
273 | |
|
|
274 | send_req (req); |
|
|
275 | } |
418 | } |
|
|
419 | #endif |
|
|
420 | |
|
|
421 | /*****************************************************************************/ |
276 | |
422 | |
277 | static void * |
423 | static void * |
278 | aio_proc (void *thr_arg) |
424 | aio_proc (void *thr_arg) |
279 | { |
425 | { |
280 | aio_req req; |
426 | aio_req req; |
… | |
… | |
306 | |
452 | |
307 | type = req->type; |
453 | type = req->type; |
308 | |
454 | |
309 | switch (type) |
455 | switch (type) |
310 | { |
456 | { |
311 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
457 | 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; |
458 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
313 | #if SYS_readahead |
459 | |
314 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
460 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
315 | #else |
|
|
316 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
317 | #endif |
|
|
318 | |
461 | |
319 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
462 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
320 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
463 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
321 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
464 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
322 | |
465 | |
323 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
466 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
324 | case REQ_CLOSE: req->result = close (req->fd); break; |
467 | case REQ_CLOSE: req->result = close (req->fd); break; |
325 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
468 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
469 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
470 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
326 | |
471 | |
|
|
472 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
327 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
473 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
328 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
329 | |
474 | |
330 | case REQ_QUIT: |
475 | case REQ_QUIT: |
331 | break; |
476 | break; |
332 | |
477 | |
333 | default: |
478 | default: |
… | |
… | |
359 | while (type != REQ_QUIT); |
504 | while (type != REQ_QUIT); |
360 | |
505 | |
361 | return 0; |
506 | return 0; |
362 | } |
507 | } |
363 | |
508 | |
|
|
509 | #define dREQ \ |
|
|
510 | aio_req req; \ |
|
|
511 | \ |
|
|
512 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
513 | croak ("clalback must be undef or of reference type"); \ |
|
|
514 | \ |
|
|
515 | Newz (0, req, 1, aio_cb); \ |
|
|
516 | if (!req) \ |
|
|
517 | croak ("out of memory during aio_req allocation"); \ |
|
|
518 | \ |
|
|
519 | req->callback = newSVsv (callback); |
|
|
520 | |
364 | MODULE = IO::AIO PACKAGE = IO::AIO |
521 | MODULE = IO::AIO PACKAGE = IO::AIO |
365 | |
522 | |
|
|
523 | PROTOTYPES: ENABLE |
|
|
524 | |
366 | BOOT: |
525 | BOOT: |
367 | { |
526 | { |
368 | if (pipe (respipe)) |
527 | create_pipe (); |
369 | croak ("unable to initialize result pipe"); |
528 | 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 | } |
529 | } |
377 | |
530 | |
378 | void |
531 | void |
379 | min_parallel(nthreads) |
532 | min_parallel(nthreads) |
380 | int nthreads |
533 | int nthreads |
381 | PROTOTYPE: $ |
534 | PROTOTYPE: $ |
382 | CODE: |
|
|
383 | while (nthreads > started) |
|
|
384 | start_thread (); |
|
|
385 | |
535 | |
386 | void |
536 | void |
387 | max_parallel(nthreads) |
537 | max_parallel(nthreads) |
388 | int nthreads |
538 | int nthreads |
389 | PROTOTYPE: $ |
539 | 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 | |
540 | |
406 | int |
541 | int |
407 | max_outstanding(nreqs) |
542 | max_outstanding(nreqs) |
408 | int nreqs |
543 | int nreqs |
409 | PROTOTYPE: $ |
544 | PROTOTYPE: $ |
410 | CODE: |
545 | CODE: |
411 | RETVAL = max_outstanding; |
546 | RETVAL = max_outstanding; |
412 | max_outstanding = nreqs; |
547 | max_outstanding = nreqs; |
413 | |
548 | |
414 | void |
549 | void |
415 | aio_open(pathname,flags,mode,callback) |
550 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
416 | SV * pathname |
551 | SV * pathname |
417 | int flags |
552 | int flags |
418 | int mode |
553 | int mode |
419 | SV * callback |
554 | SV * callback |
420 | PROTOTYPE: $$$$ |
555 | PROTOTYPE: $$$;$ |
421 | CODE: |
556 | CODE: |
422 | { |
557 | { |
423 | aio_req req; |
558 | dREQ; |
424 | |
|
|
425 | Newz (0, req, 1, aio_cb); |
|
|
426 | |
|
|
427 | if (!req) |
|
|
428 | croak ("out of memory during aio_req allocation"); |
|
|
429 | |
559 | |
430 | req->type = REQ_OPEN; |
560 | req->type = REQ_OPEN; |
431 | req->data = newSVsv (pathname); |
561 | req->data = newSVsv (pathname); |
432 | req->dataptr = SvPV_nolen (req->data); |
562 | req->dataptr = SvPVbyte_nolen (req->data); |
433 | req->fd = flags; |
563 | req->fd = flags; |
434 | req->mode = mode; |
564 | req->mode = mode; |
435 | req->callback = SvREFCNT_inc (callback); |
|
|
436 | |
565 | |
437 | send_req (req); |
566 | send_req (req); |
438 | } |
567 | } |
439 | |
568 | |
440 | void |
569 | void |
441 | aio_close(fh,callback) |
570 | aio_close(fh,callback=&PL_sv_undef) |
442 | InputStream fh |
571 | SV * fh |
443 | SV * callback |
572 | SV * callback |
444 | PROTOTYPE: $$ |
573 | PROTOTYPE: $;$ |
445 | ALIAS: |
574 | ALIAS: |
446 | aio_close = REQ_CLOSE |
575 | aio_close = REQ_CLOSE |
447 | aio_fsync = REQ_FSYNC |
576 | aio_fsync = REQ_FSYNC |
448 | aio_fdatasync = REQ_FDATASYNC |
577 | aio_fdatasync = REQ_FDATASYNC |
449 | CODE: |
578 | CODE: |
450 | { |
579 | { |
|
|
580 | dREQ; |
|
|
581 | |
|
|
582 | req->type = ix; |
|
|
583 | req->fh = newSVsv (fh); |
|
|
584 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
585 | |
|
|
586 | send_req (req); |
|
|
587 | } |
|
|
588 | |
|
|
589 | void |
|
|
590 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
591 | SV * fh |
|
|
592 | UV offset |
|
|
593 | IV length |
|
|
594 | SV * data |
|
|
595 | IV dataoffset |
|
|
596 | SV * callback |
|
|
597 | ALIAS: |
|
|
598 | aio_read = REQ_READ |
|
|
599 | aio_write = REQ_WRITE |
|
|
600 | PROTOTYPE: $$$$$;$ |
|
|
601 | CODE: |
|
|
602 | { |
451 | aio_req req; |
603 | aio_req req; |
|
|
604 | STRLEN svlen; |
|
|
605 | char *svptr = SvPVbyte (data, svlen); |
452 | |
606 | |
453 | Newz (0, req, 1, aio_cb); |
607 | SvUPGRADE (data, SVt_PV); |
|
|
608 | SvPOK_on (data); |
454 | |
609 | |
455 | if (!req) |
610 | if (dataoffset < 0) |
456 | croak ("out of memory during aio_req allocation"); |
611 | dataoffset += svlen; |
457 | |
612 | |
458 | req->type = ix; |
613 | if (dataoffset < 0 || dataoffset > svlen) |
459 | req->fd = PerlIO_fileno (fh); |
614 | croak ("data offset outside of string"); |
460 | req->callback = SvREFCNT_inc (callback); |
|
|
461 | |
615 | |
462 | send_req (req); |
616 | if (ix == REQ_WRITE) |
463 | } |
617 | { |
464 | |
618 | /* write: check length and adjust. */ |
465 | void |
619 | if (length < 0 || length + dataoffset > svlen) |
466 | aio_read(fh,offset,length,data,dataoffset,callback) |
620 | length = svlen - dataoffset; |
467 | InputStream fh |
621 | } |
468 | UV offset |
622 | else |
469 | IV length |
623 | { |
470 | SV * data |
624 | /* read: grow scalar as necessary */ |
471 | IV dataoffset |
625 | svptr = SvGROW (data, length + dataoffset); |
472 | SV * callback |
626 | } |
473 | PROTOTYPE: $$$$$$ |
|
|
474 | CODE: |
|
|
475 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
476 | |
|
|
477 | void |
|
|
478 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
479 | OutputStream fh |
|
|
480 | UV offset |
|
|
481 | IV length |
|
|
482 | SV * data |
|
|
483 | IV dataoffset |
|
|
484 | SV * callback |
|
|
485 | PROTOTYPE: $$$$$$ |
|
|
486 | CODE: |
|
|
487 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
488 | |
|
|
489 | void |
|
|
490 | aio_readahead(fh,offset,length,callback) |
|
|
491 | InputStream fh |
|
|
492 | UV offset |
|
|
493 | IV length |
|
|
494 | SV * callback |
|
|
495 | PROTOTYPE: $$$$ |
|
|
496 | CODE: |
|
|
497 | { |
|
|
498 | aio_req req; |
|
|
499 | |
627 | |
500 | if (length < 0) |
628 | if (length < 0) |
501 | croak ("length must not be negative"); |
629 | croak ("length must not be negative"); |
502 | |
630 | |
503 | Newz (0, req, 1, aio_cb); |
631 | { |
|
|
632 | dREQ; |
504 | |
633 | |
505 | if (!req) |
634 | req->type = ix; |
506 | croak ("out of memory during aio_req allocation"); |
635 | req->fh = newSVsv (fh); |
|
|
636 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
637 | : IoOFP (sv_2io (fh))); |
|
|
638 | req->offset = offset; |
|
|
639 | req->length = length; |
|
|
640 | req->data = SvREFCNT_inc (data); |
|
|
641 | req->dataptr = (char *)svptr + dataoffset; |
|
|
642 | |
|
|
643 | if (!SvREADONLY (data)) |
|
|
644 | { |
|
|
645 | SvREADONLY_on (data); |
|
|
646 | req->data2ptr = (void *)data; |
|
|
647 | } |
|
|
648 | |
|
|
649 | send_req (req); |
|
|
650 | } |
|
|
651 | } |
|
|
652 | |
|
|
653 | void |
|
|
654 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
655 | SV * fh |
|
|
656 | UV offset |
|
|
657 | IV length |
|
|
658 | SV * callback |
|
|
659 | PROTOTYPE: $$$;$ |
|
|
660 | CODE: |
|
|
661 | { |
|
|
662 | dREQ; |
507 | |
663 | |
508 | req->type = REQ_READAHEAD; |
664 | req->type = REQ_READAHEAD; |
|
|
665 | req->fh = newSVsv (fh); |
509 | req->fd = PerlIO_fileno (fh); |
666 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
510 | req->offset = offset; |
667 | req->offset = offset; |
511 | req->length = length; |
668 | req->length = length; |
512 | req->callback = SvREFCNT_inc (callback); |
|
|
513 | |
669 | |
514 | send_req (req); |
670 | send_req (req); |
515 | } |
671 | } |
516 | |
672 | |
517 | void |
673 | void |
518 | aio_stat(fh_or_path,callback) |
674 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
519 | SV * fh_or_path |
675 | SV * fh_or_path |
520 | SV * callback |
676 | SV * callback |
521 | PROTOTYPE: $$ |
|
|
522 | ALIAS: |
677 | ALIAS: |
|
|
678 | aio_stat = REQ_STAT |
523 | aio_lstat = 1 |
679 | aio_lstat = REQ_LSTAT |
524 | CODE: |
680 | CODE: |
525 | { |
681 | { |
526 | aio_req req; |
682 | dREQ; |
527 | |
|
|
528 | Newz (0, req, 1, aio_cb); |
|
|
529 | |
|
|
530 | if (!req) |
|
|
531 | croak ("out of memory during aio_req allocation"); |
|
|
532 | |
683 | |
533 | New (0, req->statdata, 1, Stat_t); |
684 | New (0, req->statdata, 1, Stat_t); |
534 | |
|
|
535 | if (!req->statdata) |
685 | if (!req->statdata) |
|
|
686 | { |
|
|
687 | free_req (req); |
536 | croak ("out of memory during aio_req->statdata allocation"); |
688 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
689 | } |
537 | |
690 | |
538 | if (SvPOK (fh_or_path)) |
691 | if (SvPOK (fh_or_path)) |
539 | { |
692 | { |
540 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
693 | req->type = ix; |
541 | req->data = newSVsv (fh_or_path); |
694 | req->data = newSVsv (fh_or_path); |
542 | req->dataptr = SvPV_nolen (req->data); |
695 | req->dataptr = SvPVbyte_nolen (req->data); |
543 | } |
696 | } |
544 | else |
697 | else |
545 | { |
698 | { |
546 | req->type = REQ_FSTAT; |
699 | req->type = REQ_FSTAT; |
|
|
700 | req->fh = newSVsv (fh_or_path); |
547 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
701 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
548 | } |
702 | } |
549 | |
703 | |
550 | req->callback = SvREFCNT_inc (callback); |
|
|
551 | |
|
|
552 | send_req (req); |
704 | send_req (req); |
553 | } |
705 | } |
554 | |
706 | |
555 | void |
707 | void |
556 | aio_unlink(pathname,callback) |
708 | aio_unlink(pathname,callback=&PL_sv_undef) |
557 | SV * pathname |
709 | SV * pathname |
558 | SV * callback |
710 | SV * callback |
559 | PROTOTYPE: $$ |
711 | ALIAS: |
|
|
712 | aio_unlink = REQ_UNLINK |
|
|
713 | aio_rmdir = REQ_RMDIR |
560 | CODE: |
714 | CODE: |
561 | { |
715 | { |
562 | aio_req req; |
716 | dREQ; |
563 | |
717 | |
564 | Newz (0, req, 1, aio_cb); |
718 | req->type = ix; |
|
|
719 | req->data = newSVsv (pathname); |
|
|
720 | req->dataptr = SvPVbyte_nolen (req->data); |
565 | |
721 | |
566 | if (!req) |
722 | send_req (req); |
567 | croak ("out of memory during aio_req allocation"); |
723 | } |
|
|
724 | |
|
|
725 | void |
|
|
726 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
727 | SV * oldpath |
|
|
728 | SV * newpath |
|
|
729 | SV * callback |
|
|
730 | CODE: |
|
|
731 | { |
|
|
732 | dREQ; |
568 | |
733 | |
569 | req->type = REQ_UNLINK; |
734 | req->type = REQ_SYMLINK; |
|
|
735 | req->fh = newSVsv (oldpath); |
|
|
736 | req->data2ptr = SvPVbyte_nolen (req->fh); |
570 | req->data = newSVsv (pathname); |
737 | req->data = newSVsv (newpath); |
571 | req->dataptr = SvPV_nolen (req->data); |
738 | req->dataptr = SvPVbyte_nolen (req->data); |
572 | req->callback = SvREFCNT_inc (callback); |
|
|
573 | |
739 | |
574 | send_req (req); |
740 | send_req (req); |
575 | } |
741 | } |
576 | |
742 | |
577 | void |
743 | void |
… | |
… | |
582 | { |
748 | { |
583 | poll_wait (); |
749 | poll_wait (); |
584 | poll_cb (); |
750 | poll_cb (); |
585 | } |
751 | } |
586 | |
752 | |
|
|
753 | void |
|
|
754 | poll() |
|
|
755 | PROTOTYPE: |
|
|
756 | CODE: |
|
|
757 | if (nreqs) |
|
|
758 | { |
|
|
759 | poll_wait (); |
|
|
760 | poll_cb (); |
|
|
761 | } |
|
|
762 | |
587 | int |
763 | int |
588 | poll_fileno() |
764 | poll_fileno() |
589 | PROTOTYPE: |
765 | PROTOTYPE: |
590 | CODE: |
766 | CODE: |
591 | RETVAL = respipe [0]; |
767 | RETVAL = respipe [0]; |