1 | #define PERL_NO_GET_CONTEXT |
1 | #define _REENTRANT 1 |
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2 | #include <errno.h> |
2 | |
3 | |
3 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "perl.h" |
5 | #include "XSUB.h" |
6 | #include "XSUB.h" |
6 | |
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 | |
7 | #include <sys/types.h> |
12 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
13 | #include <sys/stat.h> |
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14 | |
9 | #include <unistd.h> |
15 | #include <unistd.h> |
10 | #include <fcntl.h> |
16 | #include <fcntl.h> |
11 | #include <signal.h> |
17 | #include <signal.h> |
12 | #include <sched.h> |
18 | #include <sched.h> |
13 | #include <endian.h> |
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14 | |
19 | |
15 | #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 |
16 | #include <sys/syscall.h> |
24 | # include <sys/socket.h> |
17 | |
25 | # include <sys/uio.h> |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
26 | # elif __hpux |
19 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
27 | # include <sys/socket.h> |
20 | 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 |
21 | |
34 | |
22 | #if __ia64 |
35 | #if __ia64 |
23 | # define STACKSIZE 65536 |
36 | # define STACKSIZE 65536 |
24 | #else |
37 | #else |
25 | # define STACKSIZE 4096 |
38 | # define STACKSIZE 4096 |
… | |
… | |
27 | |
40 | |
28 | enum { |
41 | enum { |
29 | REQ_QUIT, |
42 | REQ_QUIT, |
30 | REQ_OPEN, REQ_CLOSE, |
43 | REQ_OPEN, REQ_CLOSE, |
31 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
44 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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45 | REQ_SENDFILE, |
32 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
46 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
33 | 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, |
34 | }; |
50 | }; |
35 | |
51 | |
36 | typedef struct aio_cb { |
52 | typedef struct aio_cb { |
37 | struct aio_cb *volatile next; |
53 | struct aio_cb *volatile next; |
38 | |
54 | |
39 | int type; |
55 | int type; |
40 | |
56 | |
41 | int fd; |
57 | int fd, fd2; |
42 | off_t offset; |
58 | off_t offset; |
43 | size_t length; |
59 | size_t length; |
44 | ssize_t result; |
60 | ssize_t result; |
45 | mode_t mode; /* open */ |
61 | mode_t mode; /* open */ |
46 | int errorno; |
62 | int errorno; |
47 | SV *data, *callback; |
63 | SV *data, *callback; |
48 | void *dataptr; |
64 | SV *fh, *fh2; |
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65 | void *dataptr, *data2ptr; |
49 | STRLEN dataoffset; |
66 | STRLEN dataoffset; |
50 | |
67 | |
51 | Stat_t *statdata; |
68 | Stat_t *statdata; |
52 | } aio_cb; |
69 | } aio_cb; |
53 | |
70 | |
54 | typedef aio_cb *aio_req; |
71 | typedef aio_cb *aio_req; |
55 | |
72 | |
56 | static int started; |
73 | static int started, wanted; |
57 | static int nreqs; |
74 | static volatile int nreqs; |
58 | static int max_outstanding = 1<<30; |
75 | static int max_outstanding = 1<<30; |
59 | static int respipe [2]; |
76 | static int respipe [2]; |
60 | |
77 | |
61 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
78 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
62 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
79 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
63 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
80 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
64 | |
81 | |
65 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
82 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
66 | static volatile aio_req ress, rese; /* queue start, queue end */ |
83 | static volatile aio_req ress, rese; /* queue start, queue end */ |
67 | |
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 | |
68 | static void |
105 | static void |
69 | poll_wait () |
106 | poll_wait () |
70 | { |
107 | { |
71 | if (!nreqs) |
108 | if (nreqs && !ress) |
72 | return; |
109 | { |
73 | |
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74 | fd_set rfd; |
110 | fd_set rfd; |
75 | FD_ZERO(&rfd); |
111 | FD_ZERO(&rfd); |
76 | FD_SET(respipe [0], &rfd); |
112 | FD_SET(respipe [0], &rfd); |
77 | |
113 | |
78 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
114 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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115 | } |
79 | } |
116 | } |
80 | |
117 | |
81 | static int |
118 | static int |
82 | poll_cb (pTHX) |
119 | poll_cb () |
83 | { |
120 | { |
84 | dSP; |
121 | dSP; |
85 | int count = 0; |
122 | int count = 0; |
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123 | int do_croak = 0; |
86 | aio_req req; |
124 | aio_req req; |
87 | |
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88 | { |
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89 | /* read and signals sent by the worker threads */ |
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90 | char buf [32]; |
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91 | while (read (respipe [0], buf, 32) > 0) |
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92 | ; |
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93 | } |
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94 | |
125 | |
95 | for (;;) |
126 | for (;;) |
96 | { |
127 | { |
97 | pthread_mutex_lock (&reslock); |
128 | pthread_mutex_lock (&reslock); |
98 | |
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99 | req = ress; |
129 | req = ress; |
100 | |
130 | |
101 | if (ress) |
131 | if (req) |
102 | { |
132 | { |
103 | ress = ress->next; |
133 | ress = req->next; |
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134 | |
104 | 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 | } |
105 | } |
144 | } |
106 | |
145 | |
107 | pthread_mutex_unlock (&reslock); |
146 | pthread_mutex_unlock (&reslock); |
108 | |
147 | |
109 | if (!req) |
148 | if (!req) |
… | |
… | |
117 | { |
156 | { |
118 | int errorno = errno; |
157 | int errorno = errno; |
119 | errno = req->errorno; |
158 | errno = req->errorno; |
120 | |
159 | |
121 | if (req->type == REQ_READ) |
160 | if (req->type == REQ_READ) |
122 | SvCUR_set (req->data, req->dataoffset |
161 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
123 | + req->result > 0 ? req->result : 0); |
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124 | |
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 | |
125 | if (req->data) |
166 | if (req->statdata) |
126 | SvREFCNT_dec (req->data); |
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127 | |
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128 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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129 | { |
167 | { |
130 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
168 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
131 | PL_laststatval = req->result; |
169 | PL_laststatval = req->result; |
132 | PL_statcache = *(req->statdata); |
170 | PL_statcache = *(req->statdata); |
133 | |
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134 | Safefree (req->statdata); |
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135 | } |
171 | } |
136 | |
172 | |
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173 | ENTER; |
137 | PUSHMARK (SP); |
174 | PUSHMARK (SP); |
138 | XPUSHs (sv_2mortal (newSViv (req->result))); |
175 | XPUSHs (sv_2mortal (newSViv (req->result))); |
139 | |
176 | |
140 | if (req->type == REQ_OPEN) |
177 | if (req->type == REQ_OPEN) |
141 | { |
178 | { |
… | |
… | |
144 | |
181 | |
145 | PUTBACK; |
182 | PUTBACK; |
146 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
183 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
147 | SPAGAIN; |
184 | SPAGAIN; |
148 | |
185 | |
149 | fh = POPs; |
186 | fh = SvREFCNT_inc (POPs); |
150 | |
187 | |
151 | PUSHMARK (SP); |
188 | PUSHMARK (SP); |
152 | XPUSHs (fh); |
189 | XPUSHs (sv_2mortal (fh)); |
153 | } |
190 | } |
154 | |
191 | |
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192 | if (SvOK (req->callback)) |
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193 | { |
155 | PUTBACK; |
194 | PUTBACK; |
156 | call_sv (req->callback, G_VOID | G_EVAL); |
195 | call_sv (req->callback, G_VOID | G_EVAL); |
157 | 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 | } |
158 | |
203 | } |
159 | if (req->callback) |
204 | |
160 | SvREFCNT_dec (req->callback); |
205 | LEAVE; |
161 | |
206 | |
162 | errno = errorno; |
207 | errno = errorno; |
163 | count++; |
208 | count++; |
164 | } |
209 | } |
165 | |
210 | |
166 | Safefree (req); |
211 | free_req (req); |
167 | } |
212 | } |
168 | |
213 | |
169 | return count; |
214 | return count; |
170 | } |
215 | } |
171 | |
216 | |
… | |
… | |
192 | } |
237 | } |
193 | |
238 | |
194 | static void |
239 | static void |
195 | send_req (aio_req req) |
240 | send_req (aio_req req) |
196 | { |
241 | { |
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242 | while (started < wanted && nreqs >= started) |
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243 | start_thread (); |
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244 | |
197 | nreqs++; |
245 | nreqs++; |
198 | |
246 | |
199 | pthread_mutex_lock (&reqlock); |
247 | pthread_mutex_lock (&reqlock); |
200 | |
248 | |
201 | req->next = 0; |
249 | req->next = 0; |
… | |
… | |
209 | reqe = reqs = req; |
257 | reqe = reqs = req; |
210 | |
258 | |
211 | pthread_cond_signal (&reqwait); |
259 | pthread_cond_signal (&reqwait); |
212 | pthread_mutex_unlock (&reqlock); |
260 | pthread_mutex_unlock (&reqlock); |
213 | |
261 | |
214 | 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) |
215 | { |
304 | { |
216 | poll_wait (); |
305 | poll_wait (); |
217 | poll_cb (); |
306 | poll_cb (); |
218 | } |
307 | } |
219 | } |
308 | } |
220 | |
309 | |
221 | static void |
310 | static void create_pipe () |
222 | end_thread (void) |
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223 | { |
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 | { |
224 | aio_req req; |
336 | aio_req prv; |
225 | New (0, req, 1, aio_cb); |
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226 | req->type = REQ_QUIT; |
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227 | |
337 | |
228 | send_req (req); |
338 | started = 0; |
229 | } |
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230 | |
339 | |
231 | static void |
340 | while (reqs) |
232 | read_write (pTHX_ |
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233 | int dowrite, int fd, off_t offset, size_t length, |
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234 | SV *data, STRLEN dataoffset, SV *callback) |
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235 | { |
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236 | aio_req req; |
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237 | STRLEN svlen; |
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238 | char *svptr = SvPV (data, svlen); |
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239 | |
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240 | SvUPGRADE (data, SVt_PV); |
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241 | SvPOK_on (data); |
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242 | |
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243 | if (dataoffset < 0) |
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244 | dataoffset += svlen; |
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245 | |
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246 | if (dataoffset < 0 || dataoffset > svlen) |
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247 | croak ("data offset outside of string"); |
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248 | |
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249 | if (dowrite) |
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250 | { |
341 | { |
251 | /* write: check length and adjust. */ |
342 | prv = reqs; |
252 | if (length < 0 || length + dataoffset > svlen) |
343 | reqs = prv->next; |
253 | length = svlen - dataoffset; |
344 | free_req (prv); |
254 | } |
345 | } |
255 | else |
346 | |
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347 | reqs = reqe = 0; |
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348 | |
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349 | while (ress) |
256 | { |
350 | { |
257 | /* read: grow scalar as necessary */ |
351 | prv = ress; |
258 | svptr = SvGROW (data, length + dataoffset); |
352 | ress = prv->next; |
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353 | free_req (prv); |
259 | } |
354 | } |
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355 | |
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356 | ress = rese = 0; |
260 | |
357 | |
261 | if (length < 0) |
358 | close (respipe [0]); |
262 | croak ("length must not be negative"); |
359 | close (respipe [1]); |
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360 | create_pipe (); |
263 | |
361 | |
264 | Newz (0, req, 1, aio_cb); |
362 | atfork_parent (); |
265 | |
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266 | if (!req) |
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267 | croak ("out of memory during aio_req allocation"); |
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268 | |
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269 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
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270 | req->fd = fd; |
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271 | req->offset = offset; |
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272 | req->length = length; |
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273 | req->data = SvREFCNT_inc (data); |
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274 | req->dataptr = (char *)svptr + dataoffset; |
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275 | req->callback = SvREFCNT_inc (callback); |
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276 | |
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277 | send_req (req); |
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278 | } |
363 | } |
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364 | |
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365 | /*****************************************************************************/ |
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366 | /* work around various missing functions */ |
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367 | |
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368 | #if !HAVE_PREADWRITE |
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369 | # define pread aio_pread |
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370 | # define pwrite aio_pwrite |
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371 | |
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372 | /* |
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373 | * make our pread/pwrite safe against themselves, but not against |
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374 | * normal read/write by using a mutex. slows down execution a lot, |
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375 | * but that's your problem, not mine. |
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376 | */ |
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377 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
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378 | |
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379 | static ssize_t |
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380 | pread (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 = read (fd, buf, count); |
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389 | lseek (fd, ooffset, 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 | |
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395 | static ssize_t |
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396 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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397 | { |
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398 | ssize_t res; |
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399 | off_t ooffset; |
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400 | |
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401 | pthread_mutex_lock (&iolock); |
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402 | ooffset = lseek (fd, 0, SEEK_CUR); |
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403 | lseek (fd, offset, SEEK_SET); |
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404 | res = write (fd, buf, count); |
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405 | lseek (fd, offset, SEEK_SET); |
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406 | pthread_mutex_unlock (&iolock); |
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407 | |
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408 | return res; |
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409 | } |
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410 | #endif |
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411 | |
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412 | #if !HAVE_FDATASYNC |
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413 | # define fdatasync fsync |
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414 | #endif |
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415 | |
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416 | #if !HAVE_READAHEAD |
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417 | # define readahead aio_readahead |
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418 | |
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419 | static char readahead_buf[4096]; |
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420 | |
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421 | static ssize_t |
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422 | readahead (int fd, off_t offset, size_t count) |
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|
423 | { |
|
|
424 | while (count > 0) |
|
|
425 | { |
|
|
426 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
|
|
427 | |
|
|
428 | pread (fd, readahead_buf, len, offset); |
|
|
429 | offset += len; |
|
|
430 | count -= len; |
|
|
431 | } |
|
|
432 | |
|
|
433 | errno = 0; |
|
|
434 | } |
|
|
435 | #endif |
|
|
436 | |
|
|
437 | /* sendfile always needs emulation */ |
|
|
438 | static ssize_t |
|
|
439 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
440 | { |
|
|
441 | ssize_t res; |
|
|
442 | |
|
|
443 | if (!count) |
|
|
444 | return 0; |
|
|
445 | |
|
|
446 | #if HAVE_SENDFILE |
|
|
447 | # if __linux |
|
|
448 | res = sendfile (ofd, ifd, &offset, count); |
|
|
449 | |
|
|
450 | # elif __freebsd |
|
|
451 | /* |
|
|
452 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
453 | * wasted on making it similar to other I/O functions. |
|
|
454 | */ |
|
|
455 | { |
|
|
456 | off_t sbytes; |
|
|
457 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
458 | |
|
|
459 | if (res < 0 && sbytes) |
|
|
460 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
461 | res = sbytes; |
|
|
462 | } |
|
|
463 | |
|
|
464 | # elif __hpux |
|
|
465 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
466 | |
|
|
467 | # elif __solaris |
|
|
468 | { |
|
|
469 | struct sendfilevec vec; |
|
|
470 | size_t sbytes; |
|
|
471 | |
|
|
472 | vec.sfv_fd = ifd; |
|
|
473 | vec.sfv_flag = 0; |
|
|
474 | vec.sfv_off = offset; |
|
|
475 | vec.sfv_len = count; |
|
|
476 | |
|
|
477 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
478 | |
|
|
479 | if (res < 0 && sbytes) |
|
|
480 | res = sbytes; |
|
|
481 | } |
|
|
482 | |
|
|
483 | # else |
|
|
484 | res = -1; |
|
|
485 | errno = ENOSYS; |
|
|
486 | # endif |
|
|
487 | #endif |
|
|
488 | |
|
|
489 | if (res < 0 |
|
|
490 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
491 | #if __solaris |
|
|
492 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
493 | #endif |
|
|
494 | ) |
|
|
495 | ) |
|
|
496 | { |
|
|
497 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
498 | char *buf = malloc (4096); |
|
|
499 | res = 0; |
|
|
500 | |
|
|
501 | for (;;) |
|
|
502 | { |
|
|
503 | ssize_t cnt; |
|
|
504 | |
|
|
505 | cnt = pread (ifd, buf, 4096, offset); |
|
|
506 | |
|
|
507 | if (cnt <= 0) |
|
|
508 | { |
|
|
509 | if (cnt && !res) res = -1; |
|
|
510 | break; |
|
|
511 | } |
|
|
512 | |
|
|
513 | cnt = write (ofd, buf, cnt); |
|
|
514 | |
|
|
515 | if (cnt <= 0) |
|
|
516 | { |
|
|
517 | if (cnt && !res) res = -1; |
|
|
518 | break; |
|
|
519 | } |
|
|
520 | |
|
|
521 | offset += cnt; |
|
|
522 | res += cnt; |
|
|
523 | } |
|
|
524 | |
|
|
525 | { |
|
|
526 | int errorno = errno; |
|
|
527 | free (buf); |
|
|
528 | errno = errorno; |
|
|
529 | } |
|
|
530 | } |
|
|
531 | |
|
|
532 | return res; |
|
|
533 | } |
|
|
534 | |
|
|
535 | /*****************************************************************************/ |
279 | |
536 | |
280 | static void * |
537 | static void * |
281 | aio_proc (void *thr_arg) |
538 | aio_proc (void *thr_arg) |
282 | { |
539 | { |
283 | aio_req req; |
540 | aio_req req; |
… | |
… | |
309 | |
566 | |
310 | type = req->type; |
567 | type = req->type; |
311 | |
568 | |
312 | switch (type) |
569 | switch (type) |
313 | { |
570 | { |
314 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
571 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
315 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
572 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
316 | #if SYS_readahead |
573 | |
317 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
574 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
318 | #else |
575 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
319 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
320 | #endif |
|
|
321 | |
576 | |
322 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
577 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
323 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
578 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
324 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
579 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
325 | |
580 | |
326 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
581 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
327 | case REQ_CLOSE: req->result = close (req->fd); break; |
582 | case REQ_CLOSE: req->result = close (req->fd); break; |
328 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
583 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
584 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
585 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
329 | |
586 | |
|
|
587 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
330 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
588 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
331 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
332 | |
589 | |
333 | case REQ_QUIT: |
590 | case REQ_QUIT: |
334 | break; |
591 | break; |
335 | |
592 | |
336 | default: |
593 | default: |
… | |
… | |
362 | while (type != REQ_QUIT); |
619 | while (type != REQ_QUIT); |
363 | |
620 | |
364 | return 0; |
621 | return 0; |
365 | } |
622 | } |
366 | |
623 | |
|
|
624 | #define dREQ \ |
|
|
625 | aio_req req; \ |
|
|
626 | \ |
|
|
627 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
628 | croak ("clalback must be undef or of reference type"); \ |
|
|
629 | \ |
|
|
630 | Newz (0, req, 1, aio_cb); \ |
|
|
631 | if (!req) \ |
|
|
632 | croak ("out of memory during aio_req allocation"); \ |
|
|
633 | \ |
|
|
634 | req->callback = newSVsv (callback); |
|
|
635 | |
367 | MODULE = IO::AIO PACKAGE = IO::AIO |
636 | MODULE = IO::AIO PACKAGE = IO::AIO |
368 | |
637 | |
|
|
638 | PROTOTYPES: ENABLE |
|
|
639 | |
369 | BOOT: |
640 | BOOT: |
370 | { |
641 | { |
371 | if (pipe (respipe)) |
642 | create_pipe (); |
372 | croak ("unable to initialize result pipe"); |
643 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
373 | |
|
|
374 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
375 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
376 | |
|
|
377 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
378 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
379 | } |
644 | } |
380 | |
645 | |
381 | void |
646 | void |
382 | min_parallel(nthreads) |
647 | min_parallel(nthreads) |
383 | int nthreads |
648 | int nthreads |
384 | PROTOTYPE: $ |
649 | PROTOTYPE: $ |
385 | CODE: |
|
|
386 | while (nthreads > started) |
|
|
387 | start_thread (); |
|
|
388 | |
650 | |
389 | void |
651 | void |
390 | max_parallel(nthreads) |
652 | max_parallel(nthreads) |
391 | int nthreads |
653 | int nthreads |
392 | PROTOTYPE: $ |
654 | PROTOTYPE: $ |
393 | CODE: |
|
|
394 | { |
|
|
395 | int cur = started; |
|
|
396 | while (cur > nthreads) |
|
|
397 | { |
|
|
398 | end_thread (); |
|
|
399 | cur--; |
|
|
400 | } |
|
|
401 | |
|
|
402 | while (started > nthreads) |
|
|
403 | { |
|
|
404 | poll_wait (); |
|
|
405 | poll_cb (aTHX); |
|
|
406 | } |
|
|
407 | } |
|
|
408 | |
655 | |
409 | int |
656 | int |
410 | max_outstanding(nreqs) |
657 | max_outstanding(nreqs) |
411 | int nreqs |
658 | int nreqs |
412 | PROTOTYPE: $ |
659 | PROTOTYPE: $ |
413 | CODE: |
660 | CODE: |
414 | RETVAL = max_outstanding; |
661 | RETVAL = max_outstanding; |
415 | max_outstanding = nreqs; |
662 | max_outstanding = nreqs; |
416 | |
663 | |
417 | void |
664 | void |
418 | aio_open(pathname,flags,mode,callback) |
665 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
419 | SV * pathname |
666 | SV * pathname |
420 | int flags |
667 | int flags |
421 | int mode |
668 | int mode |
422 | SV * callback |
669 | SV * callback |
423 | PROTOTYPE: $$$$ |
670 | PROTOTYPE: $$$;$ |
424 | CODE: |
671 | CODE: |
425 | { |
672 | { |
426 | aio_req req; |
673 | dREQ; |
427 | |
|
|
428 | Newz (0, req, 1, aio_cb); |
|
|
429 | |
|
|
430 | if (!req) |
|
|
431 | croak ("out of memory during aio_req allocation"); |
|
|
432 | |
674 | |
433 | req->type = REQ_OPEN; |
675 | req->type = REQ_OPEN; |
434 | req->data = newSVsv (pathname); |
676 | req->data = newSVsv (pathname); |
435 | req->dataptr = SvPV_nolen (req->data); |
677 | req->dataptr = SvPVbyte_nolen (req->data); |
436 | req->fd = flags; |
678 | req->fd = flags; |
437 | req->mode = mode; |
679 | req->mode = mode; |
438 | req->callback = SvREFCNT_inc (callback); |
|
|
439 | |
680 | |
440 | send_req (req); |
681 | send_req (req); |
441 | } |
682 | } |
442 | |
683 | |
443 | void |
684 | void |
444 | aio_close(fh,callback) |
685 | aio_close(fh,callback=&PL_sv_undef) |
445 | InputStream fh |
686 | SV * fh |
446 | SV * callback |
687 | SV * callback |
447 | PROTOTYPE: $$ |
688 | PROTOTYPE: $;$ |
448 | ALIAS: |
689 | ALIAS: |
449 | aio_close = REQ_CLOSE |
690 | aio_close = REQ_CLOSE |
450 | aio_fsync = REQ_FSYNC |
691 | aio_fsync = REQ_FSYNC |
451 | aio_fdatasync = REQ_FDATASYNC |
692 | aio_fdatasync = REQ_FDATASYNC |
452 | CODE: |
693 | CODE: |
453 | { |
694 | { |
|
|
695 | dREQ; |
|
|
696 | |
|
|
697 | req->type = ix; |
|
|
698 | req->fh = newSVsv (fh); |
|
|
699 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
700 | |
|
|
701 | send_req (req); |
|
|
702 | } |
|
|
703 | |
|
|
704 | void |
|
|
705 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
706 | SV * fh |
|
|
707 | UV offset |
|
|
708 | UV length |
|
|
709 | SV * data |
|
|
710 | UV dataoffset |
|
|
711 | SV * callback |
|
|
712 | ALIAS: |
|
|
713 | aio_read = REQ_READ |
|
|
714 | aio_write = REQ_WRITE |
|
|
715 | PROTOTYPE: $$$$$;$ |
|
|
716 | CODE: |
|
|
717 | { |
454 | aio_req req; |
718 | aio_req req; |
|
|
719 | STRLEN svlen; |
|
|
720 | char *svptr = SvPVbyte (data, svlen); |
455 | |
721 | |
456 | Newz (0, req, 1, aio_cb); |
722 | SvUPGRADE (data, SVt_PV); |
|
|
723 | SvPOK_on (data); |
457 | |
724 | |
458 | if (!req) |
725 | if (dataoffset < 0) |
459 | croak ("out of memory during aio_req allocation"); |
726 | dataoffset += svlen; |
460 | |
727 | |
461 | req->type = ix; |
728 | if (dataoffset < 0 || dataoffset > svlen) |
462 | req->fd = PerlIO_fileno (fh); |
729 | croak ("data offset outside of string"); |
463 | req->callback = SvREFCNT_inc (callback); |
|
|
464 | |
730 | |
465 | send_req (req); |
731 | if (ix == REQ_WRITE) |
466 | } |
732 | { |
467 | |
733 | /* write: check length and adjust. */ |
468 | void |
734 | if (length < 0 || length + dataoffset > svlen) |
469 | aio_read(fh,offset,length,data,dataoffset,callback) |
735 | length = svlen - dataoffset; |
470 | InputStream fh |
736 | } |
471 | UV offset |
737 | else |
472 | IV length |
738 | { |
473 | SV * data |
739 | /* read: grow scalar as necessary */ |
474 | IV dataoffset |
740 | svptr = SvGROW (data, length + dataoffset); |
475 | SV * callback |
741 | } |
476 | PROTOTYPE: $$$$$$ |
|
|
477 | CODE: |
|
|
478 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
479 | |
|
|
480 | void |
|
|
481 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
482 | OutputStream fh |
|
|
483 | UV offset |
|
|
484 | IV length |
|
|
485 | SV * data |
|
|
486 | IV dataoffset |
|
|
487 | SV * callback |
|
|
488 | PROTOTYPE: $$$$$$ |
|
|
489 | CODE: |
|
|
490 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
491 | |
|
|
492 | void |
|
|
493 | aio_readahead(fh,offset,length,callback) |
|
|
494 | InputStream fh |
|
|
495 | UV offset |
|
|
496 | IV length |
|
|
497 | SV * callback |
|
|
498 | PROTOTYPE: $$$$ |
|
|
499 | CODE: |
|
|
500 | { |
|
|
501 | aio_req req; |
|
|
502 | |
742 | |
503 | if (length < 0) |
743 | if (length < 0) |
504 | croak ("length must not be negative"); |
744 | croak ("length must not be negative"); |
505 | |
745 | |
506 | Newz (0, req, 1, aio_cb); |
746 | { |
|
|
747 | dREQ; |
507 | |
748 | |
508 | if (!req) |
749 | req->type = ix; |
509 | croak ("out of memory during aio_req allocation"); |
750 | req->fh = newSVsv (fh); |
|
|
751 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
752 | : IoOFP (sv_2io (fh))); |
|
|
753 | req->offset = offset; |
|
|
754 | req->length = length; |
|
|
755 | req->data = SvREFCNT_inc (data); |
|
|
756 | req->dataptr = (char *)svptr + dataoffset; |
|
|
757 | |
|
|
758 | if (!SvREADONLY (data)) |
|
|
759 | { |
|
|
760 | SvREADONLY_on (data); |
|
|
761 | req->data2ptr = (void *)data; |
|
|
762 | } |
|
|
763 | |
|
|
764 | send_req (req); |
|
|
765 | } |
|
|
766 | } |
|
|
767 | |
|
|
768 | void |
|
|
769 | aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
770 | SV * out_fh |
|
|
771 | SV * in_fh |
|
|
772 | UV in_offset |
|
|
773 | UV length |
|
|
774 | SV * callback |
|
|
775 | PROTOTYPE: $$$$;$ |
|
|
776 | CODE: |
|
|
777 | { |
|
|
778 | dREQ; |
|
|
779 | |
|
|
780 | req->type = REQ_SENDFILE; |
|
|
781 | req->fh = newSVsv (out_fh); |
|
|
782 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
783 | req->fh2 = newSVsv (in_fh); |
|
|
784 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
785 | req->offset = in_offset; |
|
|
786 | req->length = length; |
|
|
787 | |
|
|
788 | send_req (req); |
|
|
789 | } |
|
|
790 | |
|
|
791 | void |
|
|
792 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
793 | SV * fh |
|
|
794 | UV offset |
|
|
795 | IV length |
|
|
796 | SV * callback |
|
|
797 | PROTOTYPE: $$$;$ |
|
|
798 | CODE: |
|
|
799 | { |
|
|
800 | dREQ; |
510 | |
801 | |
511 | req->type = REQ_READAHEAD; |
802 | req->type = REQ_READAHEAD; |
|
|
803 | req->fh = newSVsv (fh); |
512 | req->fd = PerlIO_fileno (fh); |
804 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
513 | req->offset = offset; |
805 | req->offset = offset; |
514 | req->length = length; |
806 | req->length = length; |
515 | req->callback = SvREFCNT_inc (callback); |
|
|
516 | |
807 | |
517 | send_req (req); |
808 | send_req (req); |
518 | } |
809 | } |
519 | |
810 | |
520 | void |
811 | void |
521 | aio_stat(fh_or_path,callback) |
812 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
522 | SV * fh_or_path |
813 | SV * fh_or_path |
523 | SV * callback |
814 | SV * callback |
524 | PROTOTYPE: $$ |
|
|
525 | ALIAS: |
815 | ALIAS: |
|
|
816 | aio_stat = REQ_STAT |
526 | aio_lstat = 1 |
817 | aio_lstat = REQ_LSTAT |
527 | CODE: |
818 | CODE: |
528 | { |
819 | { |
529 | aio_req req; |
820 | dREQ; |
530 | |
|
|
531 | Newz (0, req, 1, aio_cb); |
|
|
532 | |
|
|
533 | if (!req) |
|
|
534 | croak ("out of memory during aio_req allocation"); |
|
|
535 | |
821 | |
536 | New (0, req->statdata, 1, Stat_t); |
822 | New (0, req->statdata, 1, Stat_t); |
537 | |
|
|
538 | if (!req->statdata) |
823 | if (!req->statdata) |
|
|
824 | { |
|
|
825 | free_req (req); |
539 | croak ("out of memory during aio_req->statdata allocation"); |
826 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
827 | } |
540 | |
828 | |
541 | if (SvPOK (fh_or_path)) |
829 | if (SvPOK (fh_or_path)) |
542 | { |
830 | { |
543 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
831 | req->type = ix; |
544 | req->data = newSVsv (fh_or_path); |
832 | req->data = newSVsv (fh_or_path); |
545 | req->dataptr = SvPV_nolen (req->data); |
833 | req->dataptr = SvPVbyte_nolen (req->data); |
546 | } |
834 | } |
547 | else |
835 | else |
548 | { |
836 | { |
549 | req->type = REQ_FSTAT; |
837 | req->type = REQ_FSTAT; |
|
|
838 | req->fh = newSVsv (fh_or_path); |
550 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
839 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
551 | } |
840 | } |
552 | |
841 | |
553 | req->callback = SvREFCNT_inc (callback); |
|
|
554 | |
|
|
555 | send_req (req); |
842 | send_req (req); |
556 | } |
843 | } |
557 | |
844 | |
558 | void |
845 | void |
559 | aio_unlink(pathname,callback) |
846 | aio_unlink(pathname,callback=&PL_sv_undef) |
560 | SV * pathname |
847 | SV * pathname |
561 | SV * callback |
848 | SV * callback |
562 | PROTOTYPE: $$ |
849 | ALIAS: |
|
|
850 | aio_unlink = REQ_UNLINK |
|
|
851 | aio_rmdir = REQ_RMDIR |
563 | CODE: |
852 | CODE: |
564 | { |
853 | { |
565 | aio_req req; |
854 | dREQ; |
566 | |
855 | |
567 | Newz (0, req, 1, aio_cb); |
856 | req->type = ix; |
568 | |
|
|
569 | if (!req) |
|
|
570 | croak ("out of memory during aio_req allocation"); |
|
|
571 | |
|
|
572 | req->type = REQ_UNLINK; |
|
|
573 | req->data = newSVsv (pathname); |
857 | req->data = newSVsv (pathname); |
574 | req->dataptr = SvPV_nolen (req->data); |
858 | req->dataptr = SvPVbyte_nolen (req->data); |
575 | req->callback = SvREFCNT_inc (callback); |
|
|
576 | |
859 | |
577 | send_req (req); |
860 | send_req (req); |
578 | } |
861 | } |
|
|
862 | |
|
|
863 | void |
|
|
864 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
865 | SV * oldpath |
|
|
866 | SV * newpath |
|
|
867 | SV * callback |
|
|
868 | CODE: |
|
|
869 | { |
|
|
870 | dREQ; |
|
|
871 | |
|
|
872 | req->type = REQ_SYMLINK; |
|
|
873 | req->fh = newSVsv (oldpath); |
|
|
874 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
875 | req->data = newSVsv (newpath); |
|
|
876 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
877 | |
|
|
878 | send_req (req); |
|
|
879 | } |
|
|
880 | |
|
|
881 | void |
|
|
882 | flush() |
|
|
883 | PROTOTYPE: |
|
|
884 | CODE: |
|
|
885 | while (nreqs) |
|
|
886 | { |
|
|
887 | poll_wait (); |
|
|
888 | poll_cb (); |
|
|
889 | } |
|
|
890 | |
|
|
891 | void |
|
|
892 | poll() |
|
|
893 | PROTOTYPE: |
|
|
894 | CODE: |
|
|
895 | if (nreqs) |
|
|
896 | { |
|
|
897 | poll_wait (); |
|
|
898 | poll_cb (); |
|
|
899 | } |
579 | |
900 | |
580 | int |
901 | int |
581 | poll_fileno() |
902 | poll_fileno() |
582 | PROTOTYPE: |
903 | PROTOTYPE: |
583 | CODE: |
904 | CODE: |
… | |
… | |
587 | |
908 | |
588 | int |
909 | int |
589 | poll_cb(...) |
910 | poll_cb(...) |
590 | PROTOTYPE: |
911 | PROTOTYPE: |
591 | CODE: |
912 | CODE: |
592 | RETVAL = poll_cb (aTHX); |
913 | RETVAL = poll_cb (); |
593 | OUTPUT: |
914 | OUTPUT: |
594 | RETVAL |
915 | RETVAL |
595 | |
916 | |
596 | void |
917 | void |
597 | poll_wait() |
918 | poll_wait() |