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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 | |
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12 | #include <stddef.h> |
5 | #include <sys/types.h> |
13 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
14 | #include <sys/stat.h> |
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15 | #include <limits.h> |
7 | #include <unistd.h> |
16 | #include <unistd.h> |
8 | #include <fcntl.h> |
17 | #include <fcntl.h> |
9 | #include <signal.h> |
18 | #include <signal.h> |
10 | #include <sched.h> |
19 | #include <sched.h> |
11 | #include <endian.h> |
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12 | |
20 | |
13 | #include <pthread.h> |
21 | #if HAVE_SENDFILE |
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22 | # if __linux |
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23 | # include <sys/sendfile.h> |
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24 | # elif __freebsd |
14 | #include <sys/syscall.h> |
25 | # include <sys/socket.h> |
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26 | # include <sys/uio.h> |
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27 | # elif __hpux |
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28 | # include <sys/socket.h> |
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29 | # elif __solaris /* not yet */ |
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30 | # include <sys/sendfile.h> |
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31 | # else |
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32 | # error sendfile support requested but not available |
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33 | # endif |
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34 | #endif |
15 | |
35 | |
16 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
36 | /* used for struct dirent, AIX doesn't provide it */ |
17 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
37 | #ifndef NAME_MAX |
18 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
38 | # define NAME_MAX 4096 |
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39 | #endif |
19 | |
40 | |
20 | #if __ia64 |
41 | #if __ia64 |
21 | # define STACKSIZE 65536 |
42 | # define STACKSIZE 65536 |
22 | #else |
43 | #else |
23 | # define STACKSIZE 4096 |
44 | # define STACKSIZE 8192 |
24 | #endif |
45 | #endif |
25 | |
46 | |
26 | enum { |
47 | enum { |
27 | REQ_QUIT, |
48 | REQ_QUIT, |
28 | REQ_OPEN, REQ_CLOSE, |
49 | REQ_OPEN, REQ_CLOSE, |
29 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
50 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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51 | REQ_SENDFILE, |
30 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
52 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
31 | REQ_FSYNC, REQ_FDATASYNC, |
53 | REQ_FSYNC, REQ_FDATASYNC, |
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54 | REQ_UNLINK, REQ_RMDIR, |
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55 | REQ_READDIR, |
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56 | REQ_SYMLINK, |
32 | }; |
57 | }; |
33 | |
58 | |
34 | typedef struct aio_cb { |
59 | typedef struct aio_cb { |
35 | struct aio_cb *volatile next; |
60 | struct aio_cb *volatile next; |
36 | |
61 | |
37 | int type; |
62 | int type; |
38 | |
63 | |
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64 | /* should receive a cleanup, with unions */ |
39 | int fd; |
65 | int fd, fd2; |
40 | off_t offset; |
66 | off_t offset; |
41 | size_t length; |
67 | size_t length; |
42 | ssize_t result; |
68 | ssize_t result; |
43 | mode_t mode; /* open */ |
69 | mode_t mode; /* open */ |
44 | int errorno; |
70 | int errorno; |
45 | SV *data, *callback; |
71 | SV *data, *callback; |
46 | void *dataptr; |
72 | SV *fh, *fh2; |
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73 | void *dataptr, *data2ptr; |
47 | STRLEN dataoffset; |
74 | STRLEN dataoffset; |
48 | |
75 | |
49 | Stat_t *statdata; |
76 | Stat_t *statdata; |
50 | } aio_cb; |
77 | } aio_cb; |
51 | |
78 | |
52 | typedef aio_cb *aio_req; |
79 | typedef aio_cb *aio_req; |
53 | |
80 | |
54 | static int started; |
81 | static int started, wanted; |
55 | static int nreqs; |
82 | static volatile int nreqs; |
56 | static int max_outstanding = 1<<30; |
83 | static int max_outstanding = 1<<30; |
57 | static int respipe [2]; |
84 | static int respipe [2]; |
58 | |
85 | |
59 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
86 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
60 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
87 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
88 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
62 | |
89 | |
63 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
90 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
64 | static volatile aio_req ress, rese; /* queue start, queue end */ |
91 | static volatile aio_req ress, rese; /* queue start, queue end */ |
65 | |
92 | |
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93 | static void free_req (aio_req req) |
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94 | { |
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95 | if (req->data) |
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96 | SvREFCNT_dec (req->data); |
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97 | |
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98 | if (req->fh) |
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99 | SvREFCNT_dec (req->fh); |
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100 | |
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101 | if (req->fh2) |
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102 | SvREFCNT_dec (req->fh2); |
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103 | |
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104 | if (req->statdata) |
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105 | Safefree (req->statdata); |
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106 | |
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107 | if (req->callback) |
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108 | SvREFCNT_dec (req->callback); |
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109 | |
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110 | if (req->type == REQ_READDIR && req->result >= 0) |
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111 | free (req->data2ptr); |
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112 | |
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113 | Safefree (req); |
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114 | } |
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115 | |
66 | static void |
116 | static void |
67 | poll_wait () |
117 | poll_wait () |
68 | { |
118 | { |
69 | if (!nreqs) |
119 | if (nreqs && !ress) |
70 | return; |
120 | { |
71 | |
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72 | fd_set rfd; |
121 | fd_set rfd; |
73 | FD_ZERO(&rfd); |
122 | FD_ZERO(&rfd); |
74 | FD_SET(respipe [0], &rfd); |
123 | FD_SET(respipe [0], &rfd); |
75 | |
124 | |
76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
125 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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126 | } |
77 | } |
127 | } |
78 | |
128 | |
79 | static int |
129 | static int |
80 | poll_cb () |
130 | poll_cb () |
81 | { |
131 | { |
82 | dSP; |
132 | dSP; |
83 | int count = 0; |
133 | int count = 0; |
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134 | int do_croak = 0; |
84 | aio_req req; |
135 | 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 | |
136 | |
93 | for (;;) |
137 | for (;;) |
94 | { |
138 | { |
95 | pthread_mutex_lock (&reslock); |
139 | pthread_mutex_lock (&reslock); |
96 | |
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97 | req = ress; |
140 | req = ress; |
98 | |
141 | |
99 | if (ress) |
142 | if (req) |
100 | { |
143 | { |
101 | ress = ress->next; |
144 | ress = req->next; |
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145 | |
102 | if (!ress) rese = 0; |
146 | if (!ress) |
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147 | { |
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148 | /* read any signals sent by the worker threads */ |
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149 | char buf [32]; |
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150 | while (read (respipe [0], buf, 32) == 32) |
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151 | ; |
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152 | |
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153 | rese = 0; |
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154 | } |
103 | } |
155 | } |
104 | |
156 | |
105 | pthread_mutex_unlock (&reslock); |
157 | pthread_mutex_unlock (&reslock); |
106 | |
158 | |
107 | if (!req) |
159 | if (!req) |
… | |
… | |
115 | { |
167 | { |
116 | int errorno = errno; |
168 | int errorno = errno; |
117 | errno = req->errorno; |
169 | errno = req->errorno; |
118 | |
170 | |
119 | if (req->type == REQ_READ) |
171 | if (req->type == REQ_READ) |
120 | SvCUR_set (req->data, req->dataoffset |
172 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
121 | + req->result > 0 ? req->result : 0); |
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122 | |
173 | |
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174 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
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175 | SvREADONLY_off (req->data); |
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176 | |
123 | if (req->data) |
177 | 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 | { |
178 | { |
128 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
179 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
129 | PL_laststatval = req->result; |
180 | PL_laststatval = req->result; |
130 | PL_statcache = *(req->statdata); |
181 | PL_statcache = *(req->statdata); |
131 | |
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132 | Safefree (req->statdata); |
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133 | } |
182 | } |
134 | |
183 | |
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184 | ENTER; |
135 | PUSHMARK (SP); |
185 | PUSHMARK (SP); |
136 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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137 | |
186 | |
138 | if (req->type == REQ_OPEN) |
187 | if (req->type == REQ_READDIR) |
139 | { |
188 | { |
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189 | SV *rv = &PL_sv_undef; |
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190 | |
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191 | if (req->result >= 0) |
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192 | { |
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193 | char *buf = req->data2ptr; |
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194 | AV *av = newAV (); |
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195 | |
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196 | while (req->result) |
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197 | { |
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198 | SV *sv = newSVpv (buf, 0); |
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199 | |
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200 | av_push (av, sv); |
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201 | buf += SvCUR (sv) + 1; |
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202 | req->result--; |
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203 | } |
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204 | |
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205 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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206 | } |
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207 | |
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208 | XPUSHs (rv); |
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209 | } |
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210 | else |
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211 | { |
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212 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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213 | |
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214 | if (req->type == REQ_OPEN) |
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215 | { |
140 | /* convert fd to fh */ |
216 | /* convert fd to fh */ |
141 | SV *fh; |
217 | SV *fh; |
142 | |
218 | |
143 | PUTBACK; |
219 | PUTBACK; |
144 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
220 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
145 | SPAGAIN; |
221 | SPAGAIN; |
146 | |
222 | |
147 | fh = POPs; |
223 | fh = SvREFCNT_inc (POPs); |
148 | |
224 | |
149 | PUSHMARK (SP); |
225 | PUSHMARK (SP); |
150 | XPUSHs (fh); |
226 | XPUSHs (sv_2mortal (fh)); |
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227 | } |
151 | } |
228 | } |
152 | |
229 | |
153 | if (SvOK (req->callback)) |
230 | if (SvOK (req->callback)) |
154 | { |
231 | { |
155 | PUTBACK; |
232 | PUTBACK; |
156 | call_sv (req->callback, G_VOID | G_EVAL); |
233 | call_sv (req->callback, G_VOID | G_EVAL); |
157 | SPAGAIN; |
234 | SPAGAIN; |
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235 | |
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236 | if (SvTRUE (ERRSV)) |
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237 | { |
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238 | free_req (req); |
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239 | croak (0); |
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240 | } |
158 | } |
241 | } |
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242 | |
159 | |
243 | LEAVE; |
160 | if (req->callback) |
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161 | SvREFCNT_dec (req->callback); |
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162 | |
244 | |
163 | errno = errorno; |
245 | errno = errorno; |
164 | count++; |
246 | count++; |
165 | } |
247 | } |
166 | |
248 | |
167 | Safefree (req); |
249 | free_req (req); |
168 | } |
250 | } |
169 | |
251 | |
170 | return count; |
252 | return count; |
171 | } |
253 | } |
172 | |
254 | |
… | |
… | |
193 | } |
275 | } |
194 | |
276 | |
195 | static void |
277 | static void |
196 | send_req (aio_req req) |
278 | send_req (aio_req req) |
197 | { |
279 | { |
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280 | while (started < wanted && nreqs >= started) |
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281 | start_thread (); |
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282 | |
198 | nreqs++; |
283 | nreqs++; |
199 | |
284 | |
200 | pthread_mutex_lock (&reqlock); |
285 | pthread_mutex_lock (&reqlock); |
201 | |
286 | |
202 | req->next = 0; |
287 | req->next = 0; |
… | |
… | |
210 | reqe = reqs = req; |
295 | reqe = reqs = req; |
211 | |
296 | |
212 | pthread_cond_signal (&reqwait); |
297 | pthread_cond_signal (&reqwait); |
213 | pthread_mutex_unlock (&reqlock); |
298 | pthread_mutex_unlock (&reqlock); |
214 | |
299 | |
215 | while (nreqs > max_outstanding) |
300 | if (nreqs > max_outstanding) |
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301 | for (;;) |
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302 | { |
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303 | poll_cb (); |
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304 | |
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305 | if (nreqs <= max_outstanding) |
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306 | break; |
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307 | |
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308 | poll_wait (); |
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309 | } |
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310 | } |
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311 | |
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312 | static void |
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313 | end_thread (void) |
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314 | { |
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315 | aio_req req; |
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316 | Newz (0, req, 1, aio_cb); |
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317 | req->type = REQ_QUIT; |
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318 | |
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319 | send_req (req); |
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320 | } |
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321 | |
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322 | static void min_parallel (int nthreads) |
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323 | { |
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324 | if (wanted < nthreads) |
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325 | wanted = nthreads; |
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326 | } |
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327 | |
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328 | static void max_parallel (int nthreads) |
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329 | { |
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330 | int cur = started; |
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331 | |
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332 | if (wanted > nthreads) |
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333 | wanted = nthreads; |
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334 | |
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335 | while (cur > wanted) |
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336 | { |
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337 | end_thread (); |
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338 | cur--; |
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339 | } |
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340 | |
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341 | while (started > wanted) |
216 | { |
342 | { |
217 | poll_wait (); |
343 | poll_wait (); |
218 | poll_cb (); |
344 | poll_cb (); |
219 | } |
345 | } |
220 | } |
346 | } |
221 | |
347 | |
222 | static void |
348 | static void create_pipe () |
223 | end_thread (void) |
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224 | { |
349 | { |
225 | aio_req req; |
350 | if (pipe (respipe)) |
226 | New (0, req, 1, aio_cb); |
351 | croak ("unable to initialize result pipe"); |
227 | req->type = REQ_QUIT; |
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228 | |
352 | |
229 | send_req (req); |
353 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
230 | } |
354 | croak ("cannot set result pipe to nonblocking mode"); |
231 | |
355 | |
232 | static void |
356 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
233 | read_write (int dowrite, int fd, off_t offset, size_t length, |
357 | croak ("cannot set result pipe to nonblocking mode"); |
234 | SV *data, STRLEN dataoffset, SV *callback) |
358 | } |
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 | |
359 | |
240 | SvUPGRADE (data, SVt_PV); |
360 | /*****************************************************************************/ |
241 | SvPOK_on (data); |
361 | /* work around various missing functions */ |
242 | |
362 | |
243 | if (dataoffset < 0) |
363 | #if !HAVE_PREADWRITE |
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364 | # define pread aio_pread |
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365 | # define pwrite aio_pwrite |
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366 | |
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367 | /* |
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368 | * make our pread/pwrite safe against themselves, but not against |
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369 | * normal read/write by using a mutex. slows down execution a lot, |
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370 | * but that's your problem, not mine. |
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371 | */ |
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372 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
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373 | |
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374 | static ssize_t |
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375 | pread (int fd, void *buf, size_t count, off_t offset) |
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376 | { |
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377 | ssize_t res; |
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378 | off_t ooffset; |
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379 | |
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380 | pthread_mutex_lock (&preadwritelock); |
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381 | ooffset = lseek (fd, 0, SEEK_CUR); |
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382 | lseek (fd, offset, SEEK_SET); |
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383 | res = read (fd, buf, count); |
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384 | lseek (fd, ooffset, SEEK_SET); |
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385 | pthread_mutex_unlock (&preadwritelock); |
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386 | |
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387 | return res; |
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388 | } |
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389 | |
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390 | static ssize_t |
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391 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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392 | { |
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393 | ssize_t res; |
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394 | off_t ooffset; |
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395 | |
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396 | pthread_mutex_lock (&preadwritelock); |
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397 | ooffset = lseek (fd, 0, SEEK_CUR); |
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398 | lseek (fd, offset, SEEK_SET); |
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399 | res = write (fd, buf, count); |
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400 | lseek (fd, offset, SEEK_SET); |
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401 | pthread_mutex_unlock (&preadwritelock); |
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402 | |
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403 | return res; |
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404 | } |
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405 | #endif |
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406 | |
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407 | #if !HAVE_FDATASYNC |
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408 | # define fdatasync fsync |
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409 | #endif |
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410 | |
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411 | #if !HAVE_READAHEAD |
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412 | # define readahead aio_readahead |
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413 | |
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414 | static ssize_t |
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415 | readahead (int fd, off_t offset, size_t count) |
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416 | { |
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417 | char readahead_buf[4096]; |
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418 | |
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419 | while (count > 0) |
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420 | { |
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421 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
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422 | |
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423 | pread (fd, readahead_buf, len, offset); |
244 | dataoffset += svlen; |
424 | offset += len; |
245 | |
425 | count -= len; |
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 | { |
426 | } |
251 | /* write: check length and adjust. */ |
427 | |
252 | if (length < 0 || length + dataoffset > svlen) |
428 | errno = 0; |
253 | length = svlen - dataoffset; |
429 | } |
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430 | #endif |
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431 | |
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432 | #if !HAVE_READDIR_R |
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433 | # define readdir_r aio_readdir_r |
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434 | |
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435 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
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436 | |
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437 | static int |
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438 | readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
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439 | { |
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440 | struct dirent *e; |
|
|
441 | int errorno; |
|
|
442 | |
|
|
443 | pthread_mutex_lock (&readdirlock); |
|
|
444 | |
|
|
445 | e = readdir (dirp); |
|
|
446 | errorno = errno; |
|
|
447 | |
|
|
448 | if (e) |
|
|
449 | { |
|
|
450 | *res = ent; |
|
|
451 | strcpy (ent->d_name, e->d_name); |
254 | } |
452 | } |
255 | else |
453 | else |
|
|
454 | *res = 0; |
|
|
455 | |
|
|
456 | pthread_mutex_unlock (&readdirlock); |
|
|
457 | |
|
|
458 | errno = errorno; |
|
|
459 | return e ? 0 : -1; |
|
|
460 | } |
|
|
461 | #endif |
|
|
462 | |
|
|
463 | /* sendfile always needs emulation */ |
|
|
464 | static ssize_t |
|
|
465 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
466 | { |
|
|
467 | ssize_t res; |
|
|
468 | |
|
|
469 | if (!count) |
|
|
470 | return 0; |
|
|
471 | |
|
|
472 | #if HAVE_SENDFILE |
|
|
473 | # if __linux |
|
|
474 | res = sendfile (ofd, ifd, &offset, count); |
|
|
475 | |
|
|
476 | # elif __freebsd |
|
|
477 | /* |
|
|
478 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
479 | * wasted on making it similar to other I/O functions. |
|
|
480 | */ |
256 | { |
481 | { |
257 | /* read: grow scalar as necessary */ |
482 | off_t sbytes; |
258 | svptr = SvGROW (data, length + dataoffset); |
483 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
484 | |
|
|
485 | if (res < 0 && sbytes) |
|
|
486 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
487 | res = sbytes; |
|
|
488 | } |
|
|
489 | |
|
|
490 | # elif __hpux |
|
|
491 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
492 | |
|
|
493 | # elif __solaris |
|
|
494 | { |
|
|
495 | struct sendfilevec vec; |
|
|
496 | size_t sbytes; |
|
|
497 | |
|
|
498 | vec.sfv_fd = ifd; |
|
|
499 | vec.sfv_flag = 0; |
|
|
500 | vec.sfv_off = offset; |
|
|
501 | vec.sfv_len = count; |
|
|
502 | |
|
|
503 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
504 | |
|
|
505 | if (res < 0 && sbytes) |
|
|
506 | res = sbytes; |
|
|
507 | } |
|
|
508 | |
|
|
509 | # endif |
|
|
510 | #else |
|
|
511 | res = -1; |
|
|
512 | errno = ENOSYS; |
|
|
513 | #endif |
|
|
514 | |
|
|
515 | if (res < 0 |
|
|
516 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
517 | #if __solaris |
|
|
518 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
519 | #endif |
|
|
520 | ) |
|
|
521 | ) |
259 | } |
522 | { |
|
|
523 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
524 | char buf[4096]; |
|
|
525 | res = 0; |
260 | |
526 | |
261 | if (length < 0) |
527 | while (count) |
262 | croak ("length must not be negative"); |
528 | { |
|
|
529 | ssize_t cnt; |
|
|
530 | |
|
|
531 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
263 | |
532 | |
264 | Newz (0, req, 1, aio_cb); |
533 | if (cnt <= 0) |
|
|
534 | { |
|
|
535 | if (cnt && !res) res = -1; |
|
|
536 | break; |
|
|
537 | } |
265 | |
538 | |
|
|
539 | cnt = write (ofd, buf, cnt); |
|
|
540 | |
|
|
541 | if (cnt <= 0) |
|
|
542 | { |
|
|
543 | if (cnt && !res) res = -1; |
|
|
544 | break; |
|
|
545 | } |
|
|
546 | |
|
|
547 | offset += cnt; |
|
|
548 | res += cnt; |
|
|
549 | count -= cnt; |
|
|
550 | } |
|
|
551 | } |
|
|
552 | |
|
|
553 | return res; |
|
|
554 | } |
|
|
555 | |
|
|
556 | /* read a full directory */ |
|
|
557 | static int |
|
|
558 | scandir_ (const char *path, void **namesp) |
|
|
559 | { |
|
|
560 | DIR *dirp = opendir (path); |
|
|
561 | union |
|
|
562 | { |
|
|
563 | struct dirent d; |
|
|
564 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
565 | } u; |
|
|
566 | struct dirent *entp; |
|
|
567 | char *name, *names; |
|
|
568 | int memlen = 4096; |
|
|
569 | int memofs = 0; |
|
|
570 | int res = 0; |
|
|
571 | int errorno; |
|
|
572 | |
266 | if (!req) |
573 | if (!dirp) |
267 | croak ("out of memory during aio_req allocation"); |
574 | return -1; |
268 | |
575 | |
269 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
576 | names = malloc (memlen); |
270 | req->fd = fd; |
|
|
271 | req->offset = offset; |
|
|
272 | req->length = length; |
|
|
273 | req->data = SvREFCNT_inc (data); |
|
|
274 | req->dataptr = (char *)svptr + dataoffset; |
|
|
275 | req->callback = SvREFCNT_inc (callback); |
|
|
276 | |
577 | |
277 | send_req (req); |
578 | for (;;) |
|
|
579 | { |
|
|
580 | errno = 0, readdir_r (dirp, &u.d, &entp); |
|
|
581 | |
|
|
582 | if (!entp) |
|
|
583 | break; |
|
|
584 | |
|
|
585 | name = entp->d_name; |
|
|
586 | |
|
|
587 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
588 | { |
|
|
589 | int len = strlen (name) + 1; |
|
|
590 | |
|
|
591 | res++; |
|
|
592 | |
|
|
593 | while (memofs + len > memlen) |
|
|
594 | { |
|
|
595 | memlen *= 2; |
|
|
596 | names = realloc (names, memlen); |
|
|
597 | if (!names) |
|
|
598 | break; |
|
|
599 | } |
|
|
600 | |
|
|
601 | memcpy (names + memofs, name, len); |
|
|
602 | memofs += len; |
|
|
603 | } |
|
|
604 | } |
|
|
605 | |
|
|
606 | errorno = errno; |
|
|
607 | closedir (dirp); |
|
|
608 | |
|
|
609 | if (errorno) |
|
|
610 | { |
|
|
611 | free (names); |
|
|
612 | errno = errorno; |
|
|
613 | res = -1; |
|
|
614 | } |
|
|
615 | |
|
|
616 | *namesp = (void *)names; |
|
|
617 | return res; |
278 | } |
618 | } |
|
|
619 | |
|
|
620 | /*****************************************************************************/ |
279 | |
621 | |
280 | static void * |
622 | static void * |
281 | aio_proc (void *thr_arg) |
623 | aio_proc (void *thr_arg) |
282 | { |
624 | { |
283 | aio_req req; |
625 | aio_req req; |
… | |
… | |
309 | |
651 | |
310 | type = req->type; |
652 | type = req->type; |
311 | |
653 | |
312 | switch (type) |
654 | switch (type) |
313 | { |
655 | { |
314 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
656 | 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; |
657 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
316 | #if SYS_readahead |
658 | |
317 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
659 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
318 | #else |
660 | 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 | |
661 | |
322 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
662 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
323 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
663 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
324 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
664 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
325 | |
665 | |
326 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
666 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
327 | case REQ_CLOSE: req->result = close (req->fd); break; |
667 | case REQ_CLOSE: req->result = close (req->fd); break; |
328 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
668 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
669 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
670 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
329 | |
671 | |
|
|
672 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
330 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
673 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
331 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
674 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
332 | |
675 | |
333 | case REQ_QUIT: |
676 | case REQ_QUIT: |
334 | break; |
677 | break; |
335 | |
678 | |
336 | default: |
679 | default: |
… | |
… | |
362 | while (type != REQ_QUIT); |
705 | while (type != REQ_QUIT); |
363 | |
706 | |
364 | return 0; |
707 | return 0; |
365 | } |
708 | } |
366 | |
709 | |
|
|
710 | /*****************************************************************************/ |
|
|
711 | |
|
|
712 | static void atfork_prepare (void) |
|
|
713 | { |
|
|
714 | pthread_mutex_lock (&reqlock); |
|
|
715 | pthread_mutex_lock (&reslock); |
|
|
716 | #if !HAVE_PREADWRITE |
|
|
717 | pthread_mutex_lock (&preadwritelock); |
|
|
718 | #endif |
|
|
719 | #if !HAVE_READDIR_R |
|
|
720 | pthread_mutex_lock (&readdirlock); |
|
|
721 | #endif |
|
|
722 | } |
|
|
723 | |
|
|
724 | static void atfork_parent (void) |
|
|
725 | { |
|
|
726 | #if !HAVE_READDIR_R |
|
|
727 | pthread_mutex_unlock (&readdirlock); |
|
|
728 | #endif |
|
|
729 | #if !HAVE_PREADWRITE |
|
|
730 | pthread_mutex_unlock (&preadwritelock); |
|
|
731 | #endif |
|
|
732 | pthread_mutex_unlock (&reslock); |
|
|
733 | pthread_mutex_unlock (&reqlock); |
|
|
734 | } |
|
|
735 | |
|
|
736 | static void atfork_child (void) |
|
|
737 | { |
|
|
738 | aio_req prv; |
|
|
739 | |
|
|
740 | started = 0; |
|
|
741 | |
|
|
742 | while (reqs) |
|
|
743 | { |
|
|
744 | prv = reqs; |
|
|
745 | reqs = prv->next; |
|
|
746 | free_req (prv); |
|
|
747 | } |
|
|
748 | |
|
|
749 | reqs = reqe = 0; |
|
|
750 | |
|
|
751 | while (ress) |
|
|
752 | { |
|
|
753 | prv = ress; |
|
|
754 | ress = prv->next; |
|
|
755 | free_req (prv); |
|
|
756 | } |
|
|
757 | |
|
|
758 | ress = rese = 0; |
|
|
759 | |
|
|
760 | close (respipe [0]); |
|
|
761 | close (respipe [1]); |
|
|
762 | create_pipe (); |
|
|
763 | |
|
|
764 | atfork_parent (); |
|
|
765 | } |
|
|
766 | |
|
|
767 | #define dREQ \ |
|
|
768 | aio_req req; \ |
|
|
769 | \ |
|
|
770 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
771 | croak ("clalback must be undef or of reference type"); \ |
|
|
772 | \ |
|
|
773 | Newz (0, req, 1, aio_cb); \ |
|
|
774 | if (!req) \ |
|
|
775 | croak ("out of memory during aio_req allocation"); \ |
|
|
776 | \ |
|
|
777 | req->callback = newSVsv (callback); |
|
|
778 | |
367 | MODULE = IO::AIO PACKAGE = IO::AIO |
779 | MODULE = IO::AIO PACKAGE = IO::AIO |
368 | |
780 | |
369 | PROTOTYPES: ENABLE |
781 | PROTOTYPES: ENABLE |
370 | |
782 | |
371 | BOOT: |
783 | BOOT: |
372 | { |
784 | { |
373 | if (pipe (respipe)) |
785 | create_pipe (); |
374 | croak ("unable to initialize result pipe"); |
786 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
375 | |
|
|
376 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
377 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
378 | |
|
|
379 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
380 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
381 | } |
787 | } |
382 | |
788 | |
383 | void |
789 | void |
384 | min_parallel(nthreads) |
790 | min_parallel(nthreads) |
385 | int nthreads |
791 | int nthreads |
386 | PROTOTYPE: $ |
792 | PROTOTYPE: $ |
387 | CODE: |
|
|
388 | while (nthreads > started) |
|
|
389 | start_thread (); |
|
|
390 | |
793 | |
391 | void |
794 | void |
392 | max_parallel(nthreads) |
795 | max_parallel(nthreads) |
393 | int nthreads |
796 | int nthreads |
394 | PROTOTYPE: $ |
797 | PROTOTYPE: $ |
395 | CODE: |
|
|
396 | { |
|
|
397 | int cur = started; |
|
|
398 | while (cur > nthreads) |
|
|
399 | { |
|
|
400 | end_thread (); |
|
|
401 | cur--; |
|
|
402 | } |
|
|
403 | |
|
|
404 | while (started > nthreads) |
|
|
405 | { |
|
|
406 | poll_wait (); |
|
|
407 | poll_cb (); |
|
|
408 | } |
|
|
409 | } |
|
|
410 | |
798 | |
411 | int |
799 | int |
412 | max_outstanding(nreqs) |
800 | max_outstanding(nreqs) |
413 | int nreqs |
801 | int nreqs |
414 | PROTOTYPE: $ |
802 | PROTOTYPE: $ |
… | |
… | |
423 | int mode |
811 | int mode |
424 | SV * callback |
812 | SV * callback |
425 | PROTOTYPE: $$$;$ |
813 | PROTOTYPE: $$$;$ |
426 | CODE: |
814 | CODE: |
427 | { |
815 | { |
428 | aio_req req; |
816 | dREQ; |
429 | |
|
|
430 | Newz (0, req, 1, aio_cb); |
|
|
431 | |
|
|
432 | if (!req) |
|
|
433 | croak ("out of memory during aio_req allocation"); |
|
|
434 | |
817 | |
435 | req->type = REQ_OPEN; |
818 | req->type = REQ_OPEN; |
436 | req->data = newSVsv (pathname); |
819 | req->data = newSVsv (pathname); |
437 | req->dataptr = SvPV_nolen (req->data); |
820 | req->dataptr = SvPVbyte_nolen (req->data); |
438 | req->fd = flags; |
821 | req->fd = flags; |
439 | req->mode = mode; |
822 | req->mode = mode; |
440 | req->callback = SvREFCNT_inc (callback); |
|
|
441 | |
823 | |
442 | send_req (req); |
824 | send_req (req); |
443 | } |
825 | } |
444 | |
826 | |
445 | void |
827 | void |
446 | aio_close(fh,callback=&PL_sv_undef) |
828 | aio_close(fh,callback=&PL_sv_undef) |
447 | InputStream fh |
829 | SV * fh |
448 | SV * callback |
830 | SV * callback |
449 | PROTOTYPE: $;$ |
831 | PROTOTYPE: $;$ |
450 | ALIAS: |
832 | ALIAS: |
451 | aio_close = REQ_CLOSE |
833 | aio_close = REQ_CLOSE |
452 | aio_fsync = REQ_FSYNC |
834 | aio_fsync = REQ_FSYNC |
453 | aio_fdatasync = REQ_FDATASYNC |
835 | aio_fdatasync = REQ_FDATASYNC |
454 | CODE: |
836 | CODE: |
455 | { |
837 | { |
456 | aio_req req; |
838 | dREQ; |
457 | |
|
|
458 | Newz (0, req, 1, aio_cb); |
|
|
459 | |
|
|
460 | if (!req) |
|
|
461 | croak ("out of memory during aio_req allocation"); |
|
|
462 | |
839 | |
463 | req->type = ix; |
840 | req->type = ix; |
|
|
841 | req->fh = newSVsv (fh); |
464 | req->fd = PerlIO_fileno (fh); |
842 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
465 | req->callback = SvREFCNT_inc (callback); |
|
|
466 | |
843 | |
467 | send_req (req); |
844 | send_req (req); |
468 | } |
845 | } |
469 | |
846 | |
470 | void |
847 | void |
471 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
848 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
472 | InputStream fh |
849 | SV * fh |
473 | UV offset |
850 | UV offset |
474 | IV length |
851 | UV length |
475 | SV * data |
852 | SV * data |
476 | IV dataoffset |
853 | UV dataoffset |
477 | SV * callback |
854 | SV * callback |
|
|
855 | ALIAS: |
|
|
856 | aio_read = REQ_READ |
|
|
857 | aio_write = REQ_WRITE |
478 | PROTOTYPE: $$$$$;$ |
858 | PROTOTYPE: $$$$$;$ |
479 | CODE: |
859 | CODE: |
480 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
860 | { |
|
|
861 | aio_req req; |
|
|
862 | STRLEN svlen; |
|
|
863 | char *svptr = SvPVbyte (data, svlen); |
481 | |
864 | |
|
|
865 | SvUPGRADE (data, SVt_PV); |
|
|
866 | SvPOK_on (data); |
|
|
867 | |
|
|
868 | if (dataoffset < 0) |
|
|
869 | dataoffset += svlen; |
|
|
870 | |
|
|
871 | if (dataoffset < 0 || dataoffset > svlen) |
|
|
872 | croak ("data offset outside of string"); |
|
|
873 | |
|
|
874 | if (ix == REQ_WRITE) |
|
|
875 | { |
|
|
876 | /* write: check length and adjust. */ |
|
|
877 | if (length < 0 || length + dataoffset > svlen) |
|
|
878 | length = svlen - dataoffset; |
|
|
879 | } |
|
|
880 | else |
|
|
881 | { |
|
|
882 | /* read: grow scalar as necessary */ |
|
|
883 | svptr = SvGROW (data, length + dataoffset); |
|
|
884 | } |
|
|
885 | |
|
|
886 | if (length < 0) |
|
|
887 | croak ("length must not be negative"); |
|
|
888 | |
|
|
889 | { |
|
|
890 | dREQ; |
|
|
891 | |
|
|
892 | req->type = ix; |
|
|
893 | req->fh = newSVsv (fh); |
|
|
894 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
895 | : IoOFP (sv_2io (fh))); |
|
|
896 | req->offset = offset; |
|
|
897 | req->length = length; |
|
|
898 | req->data = SvREFCNT_inc (data); |
|
|
899 | req->dataptr = (char *)svptr + dataoffset; |
|
|
900 | |
|
|
901 | if (!SvREADONLY (data)) |
|
|
902 | { |
|
|
903 | SvREADONLY_on (data); |
|
|
904 | req->data2ptr = (void *)data; |
|
|
905 | } |
|
|
906 | |
|
|
907 | send_req (req); |
|
|
908 | } |
|
|
909 | } |
|
|
910 | |
482 | void |
911 | void |
483 | aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
912 | aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
484 | OutputStream fh |
913 | SV * out_fh |
|
|
914 | SV * in_fh |
485 | UV offset |
915 | UV in_offset |
486 | IV length |
916 | UV length |
487 | SV * data |
|
|
488 | IV dataoffset |
|
|
489 | SV * callback |
917 | SV * callback |
490 | PROTOTYPE: $$$$$;$ |
918 | PROTOTYPE: $$$$;$ |
491 | CODE: |
919 | CODE: |
492 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
920 | { |
|
|
921 | dREQ; |
|
|
922 | |
|
|
923 | req->type = REQ_SENDFILE; |
|
|
924 | req->fh = newSVsv (out_fh); |
|
|
925 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
926 | req->fh2 = newSVsv (in_fh); |
|
|
927 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
928 | req->offset = in_offset; |
|
|
929 | req->length = length; |
|
|
930 | |
|
|
931 | send_req (req); |
|
|
932 | } |
493 | |
933 | |
494 | void |
934 | void |
495 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
935 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
496 | InputStream fh |
936 | SV * fh |
497 | UV offset |
937 | UV offset |
498 | IV length |
938 | IV length |
499 | SV * callback |
939 | SV * callback |
500 | PROTOTYPE: $$$;$ |
940 | PROTOTYPE: $$$;$ |
501 | CODE: |
941 | CODE: |
502 | { |
942 | { |
503 | aio_req req; |
943 | dREQ; |
504 | |
|
|
505 | if (length < 0) |
|
|
506 | croak ("length must not be negative"); |
|
|
507 | |
|
|
508 | Newz (0, req, 1, aio_cb); |
|
|
509 | |
|
|
510 | if (!req) |
|
|
511 | croak ("out of memory during aio_req allocation"); |
|
|
512 | |
944 | |
513 | req->type = REQ_READAHEAD; |
945 | req->type = REQ_READAHEAD; |
|
|
946 | req->fh = newSVsv (fh); |
514 | req->fd = PerlIO_fileno (fh); |
947 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
515 | req->offset = offset; |
948 | req->offset = offset; |
516 | req->length = length; |
949 | req->length = length; |
517 | req->callback = SvREFCNT_inc (callback); |
|
|
518 | |
950 | |
519 | send_req (req); |
951 | send_req (req); |
520 | } |
952 | } |
521 | |
953 | |
522 | void |
954 | void |
… | |
… | |
526 | ALIAS: |
958 | ALIAS: |
527 | aio_stat = REQ_STAT |
959 | aio_stat = REQ_STAT |
528 | aio_lstat = REQ_LSTAT |
960 | aio_lstat = REQ_LSTAT |
529 | CODE: |
961 | CODE: |
530 | { |
962 | { |
531 | aio_req req; |
963 | dREQ; |
532 | |
|
|
533 | Newz (0, req, 1, aio_cb); |
|
|
534 | |
|
|
535 | if (!req) |
|
|
536 | croak ("out of memory during aio_req allocation"); |
|
|
537 | |
964 | |
538 | New (0, req->statdata, 1, Stat_t); |
965 | New (0, req->statdata, 1, Stat_t); |
539 | |
|
|
540 | if (!req->statdata) |
966 | if (!req->statdata) |
|
|
967 | { |
|
|
968 | free_req (req); |
541 | croak ("out of memory during aio_req->statdata allocation"); |
969 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
970 | } |
542 | |
971 | |
543 | if (SvPOK (fh_or_path)) |
972 | if (SvPOK (fh_or_path)) |
544 | { |
973 | { |
545 | req->type = ix; |
974 | req->type = ix; |
546 | req->data = newSVsv (fh_or_path); |
975 | req->data = newSVsv (fh_or_path); |
547 | req->dataptr = SvPV_nolen (req->data); |
976 | req->dataptr = SvPVbyte_nolen (req->data); |
548 | } |
977 | } |
549 | else |
978 | else |
550 | { |
979 | { |
551 | req->type = REQ_FSTAT; |
980 | req->type = REQ_FSTAT; |
|
|
981 | req->fh = newSVsv (fh_or_path); |
552 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
982 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
553 | } |
983 | } |
554 | |
|
|
555 | req->callback = SvREFCNT_inc (callback); |
|
|
556 | |
984 | |
557 | send_req (req); |
985 | send_req (req); |
558 | } |
986 | } |
559 | |
987 | |
560 | void |
988 | void |
561 | aio_unlink(pathname,callback=&PL_sv_undef) |
989 | aio_unlink(pathname,callback=&PL_sv_undef) |
562 | SV * pathname |
990 | SV * pathname |
563 | SV * callback |
991 | SV * callback |
|
|
992 | ALIAS: |
|
|
993 | aio_unlink = REQ_UNLINK |
|
|
994 | aio_rmdir = REQ_RMDIR |
564 | CODE: |
995 | CODE: |
565 | { |
996 | { |
566 | aio_req req; |
997 | dREQ; |
567 | |
998 | |
568 | Newz (0, req, 1, aio_cb); |
999 | req->type = ix; |
|
|
1000 | req->data = newSVsv (pathname); |
|
|
1001 | req->dataptr = SvPVbyte_nolen (req->data); |
569 | |
1002 | |
570 | if (!req) |
1003 | send_req (req); |
571 | croak ("out of memory during aio_req allocation"); |
1004 | } |
|
|
1005 | |
|
|
1006 | void |
|
|
1007 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
1008 | SV * oldpath |
|
|
1009 | SV * newpath |
|
|
1010 | SV * callback |
|
|
1011 | CODE: |
|
|
1012 | { |
|
|
1013 | dREQ; |
572 | |
1014 | |
573 | req->type = REQ_UNLINK; |
1015 | req->type = REQ_SYMLINK; |
|
|
1016 | req->fh = newSVsv (oldpath); |
|
|
1017 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
1018 | req->data = newSVsv (newpath); |
|
|
1019 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1020 | |
|
|
1021 | send_req (req); |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | void |
|
|
1025 | aio_readdir(pathname,callback=&PL_sv_undef) |
|
|
1026 | SV * pathname |
|
|
1027 | SV * callback |
|
|
1028 | CODE: |
|
|
1029 | { |
|
|
1030 | dREQ; |
|
|
1031 | |
|
|
1032 | req->type = REQ_READDIR; |
574 | req->data = newSVsv (pathname); |
1033 | req->data = newSVsv (pathname); |
575 | req->dataptr = SvPV_nolen (req->data); |
1034 | req->dataptr = SvPVbyte_nolen (req->data); |
576 | req->callback = SvREFCNT_inc (callback); |
|
|
577 | |
1035 | |
578 | send_req (req); |
1036 | send_req (req); |
579 | } |
1037 | } |
580 | |
1038 | |
581 | void |
1039 | void |