… | |
… | |
5 | #include "perl.h" |
5 | #include "perl.h" |
6 | #include "XSUB.h" |
6 | #include "XSUB.h" |
7 | |
7 | |
8 | #include "autoconf/config.h" |
8 | #include "autoconf/config.h" |
9 | |
9 | |
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10 | #include <pthread.h> |
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11 | |
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12 | #include <stddef.h> |
10 | #include <sys/types.h> |
13 | #include <sys/types.h> |
11 | #include <sys/stat.h> |
14 | #include <sys/stat.h> |
12 | |
15 | #include <limits.h> |
13 | #include <unistd.h> |
16 | #include <unistd.h> |
14 | #include <fcntl.h> |
17 | #include <fcntl.h> |
15 | #include <signal.h> |
18 | #include <signal.h> |
16 | #include <sched.h> |
19 | #include <sched.h> |
17 | |
20 | |
18 | #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 |
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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 |
19 | |
35 | |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
36 | /* used for struct dirent, AIX doesn't provide it */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
37 | #ifndef NAME_MAX |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
38 | # define NAME_MAX 4096 |
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39 | #endif |
23 | |
40 | |
24 | #if __ia64 |
41 | #if __ia64 |
25 | # define STACKSIZE 65536 |
42 | # define STACKSIZE 65536 |
26 | #else |
43 | #else |
27 | # define STACKSIZE 4096 |
44 | # define STACKSIZE 8192 |
28 | #endif |
45 | #endif |
29 | |
46 | |
30 | enum { |
47 | enum { |
31 | REQ_QUIT, |
48 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
49 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
50 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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51 | REQ_SENDFILE, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
52 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
53 | REQ_FSYNC, REQ_FDATASYNC, |
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54 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
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55 | REQ_READDIR, |
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56 | REQ_LINK, REQ_SYMLINK, |
36 | }; |
57 | }; |
37 | |
58 | |
38 | typedef struct aio_cb { |
59 | typedef struct aio_cb { |
39 | struct aio_cb *volatile next; |
60 | struct aio_cb *volatile next; |
40 | |
61 | |
41 | int type; |
62 | int type; |
42 | |
63 | |
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64 | /* should receive a cleanup, with unions */ |
43 | int fd; |
65 | int fd, fd2; |
44 | off_t offset; |
66 | off_t offset; |
45 | size_t length; |
67 | size_t length; |
46 | ssize_t result; |
68 | ssize_t result; |
47 | mode_t mode; /* open */ |
69 | mode_t mode; /* open */ |
48 | int errorno; |
70 | int errorno; |
49 | SV *data, *callback, *fh; |
71 | SV *data, *callback; |
50 | void *dataptr; |
72 | SV *fh, *fh2; |
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73 | void *dataptr, *data2ptr; |
51 | STRLEN dataoffset; |
74 | STRLEN dataoffset; |
52 | |
75 | |
53 | Stat_t *statdata; |
76 | Stat_t *statdata; |
54 | } aio_cb; |
77 | } aio_cb; |
55 | |
78 | |
56 | typedef aio_cb *aio_req; |
79 | typedef aio_cb *aio_req; |
57 | |
80 | |
58 | static int started; |
81 | static int started, wanted; |
59 | static volatile int nreqs; |
82 | static volatile int nreqs; |
60 | static int max_outstanding = 1<<30; |
83 | static int max_outstanding = 1<<30; |
61 | static int respipe [2]; |
84 | static int respipe [2]; |
62 | |
85 | |
63 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
86 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
… | |
… | |
65 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
88 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
66 | |
89 | |
67 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
90 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
68 | static volatile aio_req ress, rese; /* queue start, queue end */ |
91 | static volatile aio_req ress, rese; /* queue start, queue end */ |
69 | |
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 | |
70 | static void |
116 | static void |
71 | poll_wait () |
117 | poll_wait () |
72 | { |
118 | { |
73 | if (nreqs && !ress) |
119 | if (nreqs && !ress) |
74 | { |
120 | { |
… | |
… | |
83 | static int |
129 | static int |
84 | poll_cb () |
130 | poll_cb () |
85 | { |
131 | { |
86 | dSP; |
132 | dSP; |
87 | int count = 0; |
133 | int count = 0; |
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134 | int do_croak = 0; |
88 | aio_req req, prv; |
135 | aio_req req; |
89 | |
136 | |
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137 | for (;;) |
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138 | { |
90 | pthread_mutex_lock (&reslock); |
139 | pthread_mutex_lock (&reslock); |
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140 | req = ress; |
91 | |
141 | |
92 | { |
142 | if (req) |
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143 | { |
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144 | ress = req->next; |
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145 | |
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146 | if (!ress) |
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147 | { |
93 | /* read any signals sent by the worker threads */ |
148 | /* read any signals sent by the worker threads */ |
94 | char buf [32]; |
149 | char buf [32]; |
95 | while (read (respipe [0], buf, 32) > 0) |
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 | } |
96 | ; |
155 | } |
97 | } |
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98 | |
156 | |
99 | req = ress; |
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100 | ress = rese = 0; |
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101 | |
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102 | pthread_mutex_unlock (&reslock); |
157 | pthread_mutex_unlock (&reslock); |
103 | |
158 | |
104 | while (req) |
159 | if (!req) |
105 | { |
160 | break; |
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161 | |
106 | nreqs--; |
162 | nreqs--; |
107 | |
163 | |
108 | if (req->type == REQ_QUIT) |
164 | if (req->type == REQ_QUIT) |
109 | started--; |
165 | started--; |
110 | else |
166 | else |
111 | { |
167 | { |
112 | int errorno = errno; |
168 | int errorno = errno; |
113 | errno = req->errorno; |
169 | errno = req->errorno; |
114 | |
170 | |
115 | if (req->type == REQ_READ) |
171 | if (req->type == REQ_READ) |
116 | SvCUR_set (req->data, req->dataoffset |
172 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
117 | + req->result > 0 ? req->result : 0); |
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118 | |
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 | |
119 | if (req->data) |
177 | if (req->statdata) |
120 | SvREFCNT_dec (req->data); |
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121 | |
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122 | if (req->fh) |
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123 | SvREFCNT_dec (req->fh); |
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124 | |
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125 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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126 | { |
178 | { |
127 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
179 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
128 | PL_laststatval = req->result; |
180 | PL_laststatval = req->result; |
129 | PL_statcache = *(req->statdata); |
181 | PL_statcache = *(req->statdata); |
130 | |
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131 | Safefree (req->statdata); |
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132 | } |
182 | } |
133 | |
183 | |
134 | ENTER; |
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 = SvREFCNT_inc (POPs); |
223 | fh = SvREFCNT_inc (POPs); |
148 | |
224 | |
149 | PUSHMARK (SP); |
225 | PUSHMARK (SP); |
150 | XPUSHs (sv_2mortal (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 | } |
159 | |
242 | |
160 | LEAVE; |
243 | LEAVE; |
161 | |
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162 | if (req->callback) |
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163 | SvREFCNT_dec (req->callback); |
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164 | |
244 | |
165 | errno = errorno; |
245 | errno = errorno; |
166 | count++; |
246 | count++; |
167 | } |
247 | } |
168 | |
248 | |
169 | prv = req; |
249 | free_req (req); |
170 | req = req->next; |
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171 | Safefree (prv); |
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172 | |
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173 | /* TODO: croak on errors? */ |
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174 | } |
250 | } |
175 | |
251 | |
176 | return count; |
252 | return count; |
177 | } |
253 | } |
178 | |
254 | |
… | |
… | |
199 | } |
275 | } |
200 | |
276 | |
201 | static void |
277 | static void |
202 | send_req (aio_req req) |
278 | send_req (aio_req req) |
203 | { |
279 | { |
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280 | while (started < wanted && nreqs >= started) |
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281 | start_thread (); |
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282 | |
204 | nreqs++; |
283 | nreqs++; |
205 | |
284 | |
206 | pthread_mutex_lock (&reqlock); |
285 | pthread_mutex_lock (&reqlock); |
207 | |
286 | |
208 | req->next = 0; |
287 | req->next = 0; |
… | |
… | |
216 | reqe = reqs = req; |
295 | reqe = reqs = req; |
217 | |
296 | |
218 | pthread_cond_signal (&reqwait); |
297 | pthread_cond_signal (&reqwait); |
219 | pthread_mutex_unlock (&reqlock); |
298 | pthread_mutex_unlock (&reqlock); |
220 | |
299 | |
221 | 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) |
222 | { |
342 | { |
223 | poll_wait (); |
343 | poll_wait (); |
224 | poll_cb (); |
344 | poll_cb (); |
225 | } |
345 | } |
226 | } |
346 | } |
227 | |
347 | |
228 | static void |
348 | static void create_pipe () |
229 | end_thread (void) |
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230 | { |
349 | { |
231 | aio_req req; |
350 | if (pipe (respipe)) |
232 | New (0, req, 1, aio_cb); |
351 | croak ("unable to initialize result pipe"); |
233 | req->type = REQ_QUIT; |
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234 | |
352 | |
235 | send_req (req); |
353 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
236 | } |
354 | croak ("cannot set result pipe to nonblocking mode"); |
237 | |
355 | |
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356 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
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357 | croak ("cannot set result pipe to nonblocking mode"); |
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358 | } |
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359 | |
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360 | /*****************************************************************************/ |
238 | /* work around various missing functions */ |
361 | /* work around various missing functions */ |
239 | |
362 | |
240 | #if !HAVE_PREADWRITE |
363 | #if !HAVE_PREADWRITE |
241 | # define pread aio_pread |
364 | # define pread aio_pread |
242 | # define pwrite aio_pwrite |
365 | # define pwrite aio_pwrite |
… | |
… | |
244 | /* |
367 | /* |
245 | * make our pread/pwrite safe against themselves, but not against |
368 | * make our pread/pwrite safe against themselves, but not against |
246 | * normal read/write by using a mutex. slows down execution a lot, |
369 | * normal read/write by using a mutex. slows down execution a lot, |
247 | * but that's your problem, not mine. |
370 | * but that's your problem, not mine. |
248 | */ |
371 | */ |
249 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
372 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
250 | |
373 | |
251 | static ssize_t |
374 | static ssize_t |
252 | pread (int fd, void *buf, size_t count, off_t offset) |
375 | pread (int fd, void *buf, size_t count, off_t offset) |
253 | { |
376 | { |
254 | ssize_t res; |
377 | ssize_t res; |
255 | off_t ooffset; |
378 | off_t ooffset; |
256 | |
379 | |
257 | pthread_mutex_lock (&iolock); |
380 | pthread_mutex_lock (&preadwritelock); |
258 | ooffset = lseek (fd, 0, SEEK_CUR); |
381 | ooffset = lseek (fd, 0, SEEK_CUR); |
259 | lseek (fd, offset, SEEK_SET); |
382 | lseek (fd, offset, SEEK_SET); |
260 | res = read (fd, buf, count); |
383 | res = read (fd, buf, count); |
261 | lseek (fd, ooffset, SEEK_SET); |
384 | lseek (fd, ooffset, SEEK_SET); |
262 | pthread_mutex_unlock (&iolock); |
385 | pthread_mutex_unlock (&preadwritelock); |
263 | |
386 | |
264 | return res; |
387 | return res; |
265 | } |
388 | } |
266 | |
389 | |
267 | static ssize_t |
390 | static ssize_t |
268 | pwrite (int fd, void *buf, size_t count, off_t offset) |
391 | pwrite (int fd, void *buf, size_t count, off_t offset) |
269 | { |
392 | { |
270 | ssize_t res; |
393 | ssize_t res; |
271 | off_t ooffset; |
394 | off_t ooffset; |
272 | |
395 | |
273 | pthread_mutex_lock (&iolock); |
396 | pthread_mutex_lock (&preadwritelock); |
274 | ooffset = lseek (fd, 0, SEEK_CUR); |
397 | ooffset = lseek (fd, 0, SEEK_CUR); |
275 | lseek (fd, offset, SEEK_SET); |
398 | lseek (fd, offset, SEEK_SET); |
276 | res = write (fd, buf, count); |
399 | res = write (fd, buf, count); |
277 | lseek (fd, offset, SEEK_SET); |
400 | lseek (fd, offset, SEEK_SET); |
278 | pthread_mutex_unlock (&iolock); |
401 | pthread_mutex_unlock (&preadwritelock); |
279 | |
402 | |
280 | return res; |
403 | return res; |
281 | } |
404 | } |
282 | #endif |
405 | #endif |
283 | |
406 | |
… | |
… | |
286 | #endif |
409 | #endif |
287 | |
410 | |
288 | #if !HAVE_READAHEAD |
411 | #if !HAVE_READAHEAD |
289 | # define readahead aio_readahead |
412 | # define readahead aio_readahead |
290 | |
413 | |
291 | static char readahead_buf[4096]; |
|
|
292 | |
|
|
293 | static ssize_t |
414 | static ssize_t |
294 | readahead (int fd, off_t offset, size_t count) |
415 | readahead (int fd, off_t offset, size_t count) |
295 | { |
416 | { |
|
|
417 | char readahead_buf[4096]; |
|
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418 | |
296 | while (count > 0) |
419 | while (count > 0) |
297 | { |
420 | { |
298 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
421 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
299 | |
422 | |
300 | pread (fd, readahead_buf, len, offset); |
423 | pread (fd, readahead_buf, len, offset); |
… | |
… | |
303 | } |
426 | } |
304 | |
427 | |
305 | errno = 0; |
428 | errno = 0; |
306 | } |
429 | } |
307 | #endif |
430 | #endif |
|
|
431 | |
|
|
432 | #if !HAVE_READDIR_R |
|
|
433 | # define readdir_r aio_readdir_r |
|
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434 | |
|
|
435 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
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436 | |
|
|
437 | static int |
|
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438 | readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
439 | { |
|
|
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); |
|
|
452 | } |
|
|
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 | */ |
|
|
481 | { |
|
|
482 | off_t sbytes; |
|
|
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 | ) |
|
|
522 | { |
|
|
523 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
524 | char buf[4096]; |
|
|
525 | res = 0; |
|
|
526 | |
|
|
527 | while (count) |
|
|
528 | { |
|
|
529 | ssize_t cnt; |
|
|
530 | |
|
|
531 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
|
|
532 | |
|
|
533 | if (cnt <= 0) |
|
|
534 | { |
|
|
535 | if (cnt && !res) res = -1; |
|
|
536 | break; |
|
|
537 | } |
|
|
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 | |
|
|
573 | if (!dirp) |
|
|
574 | return -1; |
|
|
575 | |
|
|
576 | names = malloc (memlen); |
|
|
577 | |
|
|
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; |
|
|
618 | } |
|
|
619 | |
|
|
620 | /*****************************************************************************/ |
308 | |
621 | |
309 | static void * |
622 | static void * |
310 | aio_proc (void *thr_arg) |
623 | aio_proc (void *thr_arg) |
311 | { |
624 | { |
312 | aio_req req; |
625 | aio_req req; |
… | |
… | |
342 | { |
655 | { |
343 | case REQ_READ: req->result = pread (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; |
344 | case REQ_WRITE: req->result = pwrite (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; |
345 | |
658 | |
346 | 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; |
|
|
660 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
347 | |
661 | |
348 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
662 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
349 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
663 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
350 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
664 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
351 | |
665 | |
352 | 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; |
353 | case REQ_CLOSE: req->result = close (req->fd); break; |
667 | case REQ_CLOSE: req->result = close (req->fd); break; |
354 | 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_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
|
|
671 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
|
|
672 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
355 | |
673 | |
356 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
674 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
357 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
675 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
676 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
358 | |
677 | |
359 | case REQ_QUIT: |
678 | case REQ_QUIT: |
360 | break; |
679 | break; |
361 | |
680 | |
362 | default: |
681 | default: |
… | |
… | |
388 | while (type != REQ_QUIT); |
707 | while (type != REQ_QUIT); |
389 | |
708 | |
390 | return 0; |
709 | return 0; |
391 | } |
710 | } |
392 | |
711 | |
|
|
712 | /*****************************************************************************/ |
|
|
713 | |
|
|
714 | static void atfork_prepare (void) |
|
|
715 | { |
|
|
716 | pthread_mutex_lock (&reqlock); |
|
|
717 | pthread_mutex_lock (&reslock); |
|
|
718 | #if !HAVE_PREADWRITE |
|
|
719 | pthread_mutex_lock (&preadwritelock); |
|
|
720 | #endif |
|
|
721 | #if !HAVE_READDIR_R |
|
|
722 | pthread_mutex_lock (&readdirlock); |
|
|
723 | #endif |
|
|
724 | } |
|
|
725 | |
|
|
726 | static void atfork_parent (void) |
|
|
727 | { |
|
|
728 | #if !HAVE_READDIR_R |
|
|
729 | pthread_mutex_unlock (&readdirlock); |
|
|
730 | #endif |
|
|
731 | #if !HAVE_PREADWRITE |
|
|
732 | pthread_mutex_unlock (&preadwritelock); |
|
|
733 | #endif |
|
|
734 | pthread_mutex_unlock (&reslock); |
|
|
735 | pthread_mutex_unlock (&reqlock); |
|
|
736 | } |
|
|
737 | |
|
|
738 | static void atfork_child (void) |
|
|
739 | { |
|
|
740 | aio_req prv; |
|
|
741 | |
|
|
742 | started = 0; |
|
|
743 | |
|
|
744 | while (reqs) |
|
|
745 | { |
|
|
746 | prv = reqs; |
|
|
747 | reqs = prv->next; |
|
|
748 | free_req (prv); |
|
|
749 | } |
|
|
750 | |
|
|
751 | reqs = reqe = 0; |
|
|
752 | |
|
|
753 | while (ress) |
|
|
754 | { |
|
|
755 | prv = ress; |
|
|
756 | ress = prv->next; |
|
|
757 | free_req (prv); |
|
|
758 | } |
|
|
759 | |
|
|
760 | ress = rese = 0; |
|
|
761 | |
|
|
762 | close (respipe [0]); |
|
|
763 | close (respipe [1]); |
|
|
764 | create_pipe (); |
|
|
765 | |
|
|
766 | atfork_parent (); |
|
|
767 | } |
|
|
768 | |
|
|
769 | #define dREQ \ |
|
|
770 | aio_req req; \ |
|
|
771 | \ |
|
|
772 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
773 | croak ("clalback must be undef or of reference type"); \ |
|
|
774 | \ |
|
|
775 | Newz (0, req, 1, aio_cb); \ |
|
|
776 | if (!req) \ |
|
|
777 | croak ("out of memory during aio_req allocation"); \ |
|
|
778 | \ |
|
|
779 | req->callback = newSVsv (callback); |
|
|
780 | |
393 | MODULE = IO::AIO PACKAGE = IO::AIO |
781 | MODULE = IO::AIO PACKAGE = IO::AIO |
394 | |
782 | |
395 | PROTOTYPES: ENABLE |
783 | PROTOTYPES: ENABLE |
396 | |
784 | |
397 | BOOT: |
785 | BOOT: |
398 | { |
786 | { |
399 | if (pipe (respipe)) |
787 | create_pipe (); |
400 | croak ("unable to initialize result pipe"); |
788 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
401 | |
|
|
402 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
403 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
404 | |
|
|
405 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
406 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
407 | } |
789 | } |
408 | |
790 | |
409 | void |
791 | void |
410 | min_parallel(nthreads) |
792 | min_parallel (nthreads) |
411 | int nthreads |
793 | int nthreads |
412 | PROTOTYPE: $ |
794 | PROTOTYPE: $ |
413 | CODE: |
|
|
414 | while (nthreads > started) |
|
|
415 | start_thread (); |
|
|
416 | |
795 | |
417 | void |
796 | void |
418 | max_parallel(nthreads) |
797 | max_parallel (nthreads) |
419 | int nthreads |
798 | int nthreads |
420 | PROTOTYPE: $ |
799 | PROTOTYPE: $ |
421 | CODE: |
|
|
422 | { |
|
|
423 | int cur = started; |
|
|
424 | while (cur > nthreads) |
|
|
425 | { |
|
|
426 | end_thread (); |
|
|
427 | cur--; |
|
|
428 | } |
|
|
429 | |
|
|
430 | while (started > nthreads) |
|
|
431 | { |
|
|
432 | poll_wait (); |
|
|
433 | poll_cb (); |
|
|
434 | } |
|
|
435 | } |
|
|
436 | |
800 | |
437 | int |
801 | int |
438 | max_outstanding(nreqs) |
802 | max_outstanding (nreqs) |
439 | int nreqs |
803 | int nreqs |
440 | PROTOTYPE: $ |
804 | PROTOTYPE: $ |
441 | CODE: |
805 | CODE: |
442 | RETVAL = max_outstanding; |
806 | RETVAL = max_outstanding; |
443 | max_outstanding = nreqs; |
807 | max_outstanding = nreqs; |
444 | |
808 | |
445 | void |
809 | void |
446 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
810 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
447 | SV * pathname |
811 | SV * pathname |
448 | int flags |
812 | int flags |
449 | int mode |
813 | int mode |
450 | SV * callback |
814 | SV * callback |
451 | PROTOTYPE: $$$;$ |
815 | PROTOTYPE: $$$;$ |
452 | CODE: |
816 | CODE: |
453 | { |
817 | { |
454 | aio_req req; |
818 | dREQ; |
455 | |
|
|
456 | Newz (0, req, 1, aio_cb); |
|
|
457 | |
|
|
458 | if (!req) |
|
|
459 | croak ("out of memory during aio_req allocation"); |
|
|
460 | |
819 | |
461 | req->type = REQ_OPEN; |
820 | req->type = REQ_OPEN; |
462 | req->data = newSVsv (pathname); |
821 | req->data = newSVsv (pathname); |
463 | req->dataptr = SvPV_nolen (req->data); |
822 | req->dataptr = SvPVbyte_nolen (req->data); |
464 | req->fd = flags; |
823 | req->fd = flags; |
465 | req->mode = mode; |
824 | req->mode = mode; |
466 | req->callback = SvREFCNT_inc (callback); |
|
|
467 | |
825 | |
468 | send_req (req); |
826 | send_req (req); |
469 | } |
827 | } |
470 | |
828 | |
471 | void |
829 | void |
472 | aio_close(fh,callback=&PL_sv_undef) |
830 | aio_close (fh,callback=&PL_sv_undef) |
473 | SV * fh |
831 | SV * fh |
474 | SV * callback |
832 | SV * callback |
475 | PROTOTYPE: $;$ |
833 | PROTOTYPE: $;$ |
476 | ALIAS: |
834 | ALIAS: |
477 | aio_close = REQ_CLOSE |
835 | aio_close = REQ_CLOSE |
478 | aio_fsync = REQ_FSYNC |
836 | aio_fsync = REQ_FSYNC |
479 | aio_fdatasync = REQ_FDATASYNC |
837 | aio_fdatasync = REQ_FDATASYNC |
480 | CODE: |
838 | CODE: |
481 | { |
839 | { |
482 | aio_req req; |
840 | dREQ; |
483 | |
|
|
484 | Newz (0, req, 1, aio_cb); |
|
|
485 | |
|
|
486 | if (!req) |
|
|
487 | croak ("out of memory during aio_req allocation"); |
|
|
488 | |
841 | |
489 | req->type = ix; |
842 | req->type = ix; |
490 | req->fh = newSVsv (fh); |
843 | req->fh = newSVsv (fh); |
491 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
844 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
492 | req->callback = SvREFCNT_inc (callback); |
|
|
493 | |
845 | |
494 | send_req (req); |
846 | send_req (req); |
495 | } |
847 | } |
496 | |
848 | |
497 | void |
849 | void |
498 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
850 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
499 | SV * fh |
851 | SV * fh |
500 | UV offset |
852 | UV offset |
501 | IV length |
853 | UV length |
502 | SV * data |
854 | SV * data |
503 | IV dataoffset |
855 | UV dataoffset |
504 | SV * callback |
856 | SV * callback |
505 | ALIAS: |
857 | ALIAS: |
506 | aio_read = REQ_READ |
858 | aio_read = REQ_READ |
507 | aio_write = REQ_WRITE |
859 | aio_write = REQ_WRITE |
508 | PROTOTYPE: $$$$$;$ |
860 | PROTOTYPE: $$$$$;$ |
… | |
… | |
534 | } |
886 | } |
535 | |
887 | |
536 | if (length < 0) |
888 | if (length < 0) |
537 | croak ("length must not be negative"); |
889 | croak ("length must not be negative"); |
538 | |
890 | |
539 | Newz (0, req, 1, aio_cb); |
891 | { |
|
|
892 | dREQ; |
540 | |
893 | |
541 | if (!req) |
|
|
542 | croak ("out of memory during aio_req allocation"); |
|
|
543 | |
|
|
544 | req->type = ix; |
894 | req->type = ix; |
545 | req->fh = newSVsv (fh); |
895 | req->fh = newSVsv (fh); |
546 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
896 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
547 | : IoOFP (sv_2io (fh))); |
897 | : IoOFP (sv_2io (fh))); |
548 | req->offset = offset; |
898 | req->offset = offset; |
|
|
899 | req->length = length; |
|
|
900 | req->data = SvREFCNT_inc (data); |
|
|
901 | req->dataptr = (char *)svptr + dataoffset; |
|
|
902 | |
|
|
903 | if (!SvREADONLY (data)) |
|
|
904 | { |
|
|
905 | SvREADONLY_on (data); |
|
|
906 | req->data2ptr = (void *)data; |
|
|
907 | } |
|
|
908 | |
|
|
909 | send_req (req); |
|
|
910 | } |
|
|
911 | } |
|
|
912 | |
|
|
913 | void |
|
|
914 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
915 | SV * out_fh |
|
|
916 | SV * in_fh |
|
|
917 | UV in_offset |
|
|
918 | UV length |
|
|
919 | SV * callback |
|
|
920 | PROTOTYPE: $$$$;$ |
|
|
921 | CODE: |
|
|
922 | { |
|
|
923 | dREQ; |
|
|
924 | |
|
|
925 | req->type = REQ_SENDFILE; |
|
|
926 | req->fh = newSVsv (out_fh); |
|
|
927 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
928 | req->fh2 = newSVsv (in_fh); |
|
|
929 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
930 | req->offset = in_offset; |
549 | req->length = length; |
931 | req->length = length; |
550 | req->data = SvREFCNT_inc (data); |
|
|
551 | req->dataptr = (char *)svptr + dataoffset; |
|
|
552 | req->callback = SvREFCNT_inc (callback); |
|
|
553 | |
932 | |
554 | send_req (req); |
933 | send_req (req); |
555 | } |
934 | } |
556 | |
935 | |
557 | void |
936 | void |
558 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
937 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
559 | SV * fh |
938 | SV * fh |
560 | UV offset |
939 | UV offset |
561 | IV length |
940 | IV length |
562 | SV * callback |
941 | SV * callback |
563 | PROTOTYPE: $$$;$ |
942 | PROTOTYPE: $$$;$ |
564 | CODE: |
943 | CODE: |
565 | { |
944 | { |
566 | aio_req req; |
945 | dREQ; |
567 | |
|
|
568 | if (length < 0) |
|
|
569 | croak ("length must not be negative"); |
|
|
570 | |
|
|
571 | Newz (0, req, 1, aio_cb); |
|
|
572 | |
|
|
573 | if (!req) |
|
|
574 | croak ("out of memory during aio_req allocation"); |
|
|
575 | |
946 | |
576 | req->type = REQ_READAHEAD; |
947 | req->type = REQ_READAHEAD; |
577 | req->fh = newSVsv (fh); |
948 | req->fh = newSVsv (fh); |
578 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
949 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
579 | req->offset = offset; |
950 | req->offset = offset; |
580 | req->length = length; |
951 | req->length = length; |
581 | req->callback = SvREFCNT_inc (callback); |
|
|
582 | |
952 | |
583 | send_req (req); |
953 | send_req (req); |
584 | } |
954 | } |
585 | |
955 | |
586 | void |
956 | void |
587 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
957 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
588 | SV * fh_or_path |
958 | SV * fh_or_path |
589 | SV * callback |
959 | SV * callback |
590 | ALIAS: |
960 | ALIAS: |
591 | aio_stat = REQ_STAT |
961 | aio_stat = REQ_STAT |
592 | aio_lstat = REQ_LSTAT |
962 | aio_lstat = REQ_LSTAT |
593 | CODE: |
963 | CODE: |
594 | { |
964 | { |
595 | aio_req req; |
965 | dREQ; |
596 | |
|
|
597 | Newz (0, req, 1, aio_cb); |
|
|
598 | |
|
|
599 | if (!req) |
|
|
600 | croak ("out of memory during aio_req allocation"); |
|
|
601 | |
966 | |
602 | New (0, req->statdata, 1, Stat_t); |
967 | New (0, req->statdata, 1, Stat_t); |
603 | |
|
|
604 | if (!req->statdata) |
968 | if (!req->statdata) |
|
|
969 | { |
|
|
970 | free_req (req); |
605 | croak ("out of memory during aio_req->statdata allocation"); |
971 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
972 | } |
606 | |
973 | |
607 | if (SvPOK (fh_or_path)) |
974 | if (SvPOK (fh_or_path)) |
608 | { |
975 | { |
609 | req->type = ix; |
976 | req->type = ix; |
610 | req->data = newSVsv (fh_or_path); |
977 | req->data = newSVsv (fh_or_path); |
611 | req->dataptr = SvPV_nolen (req->data); |
978 | req->dataptr = SvPVbyte_nolen (req->data); |
612 | } |
979 | } |
613 | else |
980 | else |
614 | { |
981 | { |
615 | req->type = REQ_FSTAT; |
982 | req->type = REQ_FSTAT; |
616 | req->fh = newSVsv (fh_or_path); |
983 | req->fh = newSVsv (fh_or_path); |
617 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
984 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
618 | } |
985 | } |
619 | |
986 | |
620 | req->callback = SvREFCNT_inc (callback); |
|
|
621 | |
|
|
622 | send_req (req); |
987 | send_req (req); |
623 | } |
988 | } |
624 | |
989 | |
625 | void |
990 | void |
626 | aio_unlink(pathname,callback=&PL_sv_undef) |
991 | aio_unlink (pathname,callback=&PL_sv_undef) |
627 | SV * pathname |
992 | SV * pathname |
628 | SV * callback |
993 | SV * callback |
|
|
994 | ALIAS: |
|
|
995 | aio_unlink = REQ_UNLINK |
|
|
996 | aio_rmdir = REQ_RMDIR |
|
|
997 | aio_readdir = REQ_READDIR |
629 | CODE: |
998 | CODE: |
630 | { |
999 | { |
631 | aio_req req; |
1000 | dREQ; |
632 | |
1001 | |
633 | Newz (0, req, 1, aio_cb); |
1002 | req->type = ix; |
634 | |
|
|
635 | if (!req) |
|
|
636 | croak ("out of memory during aio_req allocation"); |
|
|
637 | |
|
|
638 | req->type = REQ_UNLINK; |
|
|
639 | req->data = newSVsv (pathname); |
1003 | req->data = newSVsv (pathname); |
640 | req->dataptr = SvPV_nolen (req->data); |
1004 | req->dataptr = SvPVbyte_nolen (req->data); |
641 | req->callback = SvREFCNT_inc (callback); |
|
|
642 | |
1005 | |
643 | send_req (req); |
1006 | send_req (req); |
644 | } |
1007 | } |
645 | |
1008 | |
646 | void |
1009 | void |
|
|
1010 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
|
|
1011 | SV * oldpath |
|
|
1012 | SV * newpath |
|
|
1013 | SV * callback |
|
|
1014 | ALIAS: |
|
|
1015 | aio_link = REQ_LINK |
|
|
1016 | aio_symlink = REQ_SYMLINK |
|
|
1017 | aio_rename = REQ_RENAME |
|
|
1018 | CODE: |
|
|
1019 | { |
|
|
1020 | dREQ; |
|
|
1021 | |
|
|
1022 | req->type = ix; |
|
|
1023 | req->fh = newSVsv (oldpath); |
|
|
1024 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
1025 | req->data = newSVsv (newpath); |
|
|
1026 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1027 | |
|
|
1028 | send_req (req); |
|
|
1029 | } |
|
|
1030 | |
|
|
1031 | void |
647 | flush() |
1032 | flush () |
648 | PROTOTYPE: |
1033 | PROTOTYPE: |
649 | CODE: |
1034 | CODE: |
650 | while (nreqs) |
1035 | while (nreqs) |
651 | { |
1036 | { |
652 | poll_wait (); |
1037 | poll_wait (); |