… | |
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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> |
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13 | #include <errno.h> |
10 | #include <sys/types.h> |
14 | #include <sys/types.h> |
11 | #include <sys/stat.h> |
15 | #include <sys/stat.h> |
12 | |
16 | #include <limits.h> |
13 | #include <unistd.h> |
17 | #include <unistd.h> |
14 | #include <fcntl.h> |
18 | #include <fcntl.h> |
15 | #include <signal.h> |
19 | #include <signal.h> |
16 | #include <sched.h> |
20 | #include <sched.h> |
17 | |
21 | |
18 | #include <pthread.h> |
22 | #if HAVE_SENDFILE |
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23 | # if __linux |
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24 | # include <sys/sendfile.h> |
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25 | # elif __freebsd |
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26 | # include <sys/socket.h> |
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27 | # include <sys/uio.h> |
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28 | # elif __hpux |
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29 | # include <sys/socket.h> |
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30 | # elif __solaris /* not yet */ |
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31 | # include <sys/sendfile.h> |
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32 | # else |
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33 | # error sendfile support requested but not available |
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34 | # endif |
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35 | #endif |
19 | |
36 | |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
37 | /* used for struct dirent, AIX doesn't provide it */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
38 | #ifndef NAME_MAX |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
39 | # define NAME_MAX 4096 |
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40 | #endif |
23 | |
41 | |
24 | #if __ia64 |
42 | #if __ia64 |
25 | # define STACKSIZE 65536 |
43 | # define STACKSIZE 65536 |
26 | #else |
44 | #else |
27 | # define STACKSIZE 4096 |
45 | # define STACKSIZE 8192 |
28 | #endif |
46 | #endif |
29 | |
47 | |
30 | enum { |
48 | enum { |
31 | REQ_QUIT, |
49 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
50 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
51 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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52 | REQ_SENDFILE, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
53 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
54 | REQ_FSYNC, REQ_FDATASYNC, |
36 | REQ_UNLINK, REQ_RMDIR, |
55 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
37 | REQ_SYMLINK, |
56 | REQ_READDIR, |
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57 | REQ_LINK, REQ_SYMLINK, |
38 | }; |
58 | }; |
39 | |
59 | |
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60 | #define AIO_CB_KLASS "IO::AIO::CB" |
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61 | |
40 | typedef struct aio_cb { |
62 | typedef struct aio_cb |
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63 | { |
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64 | struct aio_cb *grp_prev, *grp_next; |
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65 | struct aio_grp *grp; |
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66 | |
41 | struct aio_cb *volatile next; |
67 | struct aio_cb *volatile next; |
42 | |
68 | |
43 | int type; |
69 | SV *self; /* the perl counterpart of this request, if any */ |
44 | |
70 | |
45 | int fd; |
71 | SV *data, *callback; |
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72 | SV *fh, *fh2; |
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73 | void *dataptr, *data2ptr; |
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74 | Stat_t *statdata; |
46 | off_t offset; |
75 | off_t offset; |
47 | size_t length; |
76 | size_t length; |
48 | ssize_t result; |
77 | ssize_t result; |
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78 | |
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79 | int type; |
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80 | int fd, fd2; |
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81 | int errorno; |
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82 | STRLEN dataoffset; |
49 | mode_t mode; /* open */ |
83 | mode_t mode; /* open */ |
50 | int errorno; |
84 | unsigned char cancelled; |
51 | SV *data, *callback, *fh; |
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52 | void *dataptr, *data2ptr; |
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53 | STRLEN dataoffset; |
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54 | |
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55 | Stat_t *statdata; |
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56 | } aio_cb; |
85 | } aio_cb; |
57 | |
86 | |
58 | typedef aio_cb *aio_req; |
87 | typedef aio_cb *aio_req; |
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88 | typedef aio_cb *aio_req_ornot; |
59 | |
89 | |
60 | static int started, wanted; |
90 | static int started, wanted; |
61 | static volatile int nreqs; |
91 | static volatile int nreqs; |
62 | static int max_outstanding = 1<<30; |
92 | static int max_outstanding = 1<<30; |
63 | static int respipe [2]; |
93 | static int respipe [2]; |
… | |
… | |
67 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
97 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
68 | |
98 | |
69 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
99 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
70 | static volatile aio_req ress, rese; /* queue start, queue end */ |
100 | static volatile aio_req ress, rese; /* queue start, queue end */ |
71 | |
101 | |
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102 | typedef struct aio_grp |
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103 | { |
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104 | struct aio_cb *first, *last; |
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105 | SV *callback; |
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106 | int busycount; |
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107 | } aio_grp; |
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108 | |
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109 | static void aio_grp_begin (aio_grp *grp) |
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110 | { |
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111 | ++grp->busycount; |
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112 | } |
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113 | |
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114 | static void aio_grp_end (aio_grp *grp) |
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115 | { |
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116 | --grp->busycount; |
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117 | |
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118 | if (grp->busycount) |
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119 | return; |
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120 | |
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121 | SvREFCNT_dec (grp->callback); |
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122 | grp->callback = 0; |
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123 | } |
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124 | |
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125 | static aio_grp *aio_grp_new () |
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126 | { |
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127 | aio_grp *grp; |
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128 | |
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129 | Newz (0, grp, 1, aio_grp); |
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130 | aio_grp_begin (grp); |
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131 | |
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132 | return grp; |
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133 | } |
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134 | |
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135 | /* must be called at most once */ |
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136 | static SV *req_sv (aio_req req) |
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137 | { |
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138 | req->self = (SV *)newHV (); |
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139 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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140 | |
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141 | return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1)); |
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142 | } |
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143 | |
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144 | static aio_req SvAIO_REQ (SV *sv) |
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145 | { |
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146 | if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv)) |
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147 | croak ("object of class " AIO_CB_KLASS " expected"); |
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148 | |
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149 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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150 | |
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151 | return mg ? (aio_req)mg->mg_ptr : 0; |
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152 | } |
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153 | |
72 | static void free_req (aio_req req) |
154 | static void req_free (aio_req req) |
73 | { |
155 | { |
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156 | if (req->self) |
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157 | { |
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158 | sv_unmagic (req->self, PERL_MAGIC_ext); |
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159 | SvREFCNT_dec (req->self); |
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160 | } |
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161 | |
74 | if (req->data) |
162 | if (req->data) |
75 | SvREFCNT_dec (req->data); |
163 | SvREFCNT_dec (req->data); |
76 | |
164 | |
77 | if (req->fh) |
165 | if (req->fh) |
78 | SvREFCNT_dec (req->fh); |
166 | SvREFCNT_dec (req->fh); |
79 | |
167 | |
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168 | if (req->fh2) |
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169 | SvREFCNT_dec (req->fh2); |
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170 | |
80 | if (req->statdata) |
171 | if (req->statdata) |
81 | Safefree (req->statdata); |
172 | Safefree (req->statdata); |
82 | |
173 | |
83 | if (req->callback) |
174 | if (req->callback) |
84 | SvREFCNT_dec (req->callback); |
175 | SvREFCNT_dec (req->callback); |
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176 | |
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177 | if (req->type == REQ_READDIR && req->result >= 0) |
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178 | free (req->data2ptr); |
85 | |
179 | |
86 | Safefree (req); |
180 | Safefree (req); |
87 | } |
181 | } |
88 | |
182 | |
89 | static void |
183 | static void |
… | |
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154 | PL_statcache = *(req->statdata); |
248 | PL_statcache = *(req->statdata); |
155 | } |
249 | } |
156 | |
250 | |
157 | ENTER; |
251 | ENTER; |
158 | PUSHMARK (SP); |
252 | PUSHMARK (SP); |
159 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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160 | |
253 | |
161 | if (req->type == REQ_OPEN) |
254 | if (req->type == REQ_READDIR) |
162 | { |
255 | { |
163 | /* convert fd to fh */ |
256 | SV *rv = &PL_sv_undef; |
164 | SV *fh; |
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165 | |
257 | |
166 | PUTBACK; |
258 | if (req->result >= 0) |
167 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
259 | { |
168 | SPAGAIN; |
260 | char *buf = req->data2ptr; |
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261 | AV *av = newAV (); |
169 | |
262 | |
170 | fh = SvREFCNT_inc (POPs); |
263 | while (req->result) |
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264 | { |
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265 | SV *sv = newSVpv (buf, 0); |
171 | |
266 | |
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267 | av_push (av, sv); |
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268 | buf += SvCUR (sv) + 1; |
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269 | req->result--; |
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270 | } |
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271 | |
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272 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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273 | } |
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274 | |
172 | PUSHMARK (SP); |
275 | XPUSHs (rv); |
173 | XPUSHs (sv_2mortal (fh)); |
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174 | } |
276 | } |
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277 | else |
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278 | { |
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279 | XPUSHs (sv_2mortal (newSViv (req->result))); |
175 | |
280 | |
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281 | if (req->type == REQ_OPEN) |
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282 | { |
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283 | /* convert fd to fh */ |
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284 | SV *fh; |
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285 | |
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286 | PUTBACK; |
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287 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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288 | SPAGAIN; |
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289 | |
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290 | fh = SvREFCNT_inc (POPs); |
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291 | |
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292 | PUSHMARK (SP); |
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293 | XPUSHs (sv_2mortal (fh)); |
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294 | } |
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295 | } |
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296 | |
176 | if (SvOK (req->callback)) |
297 | if (SvOK (req->callback) && !req->cancelled) |
177 | { |
298 | { |
178 | PUTBACK; |
299 | PUTBACK; |
179 | call_sv (req->callback, G_VOID | G_EVAL); |
300 | call_sv (req->callback, G_VOID | G_EVAL); |
180 | SPAGAIN; |
301 | SPAGAIN; |
181 | |
302 | |
182 | if (SvTRUE (ERRSV)) |
303 | if (SvTRUE (ERRSV)) |
183 | { |
304 | { |
184 | free_req (req); |
305 | req_free (req); |
185 | croak (0); |
306 | croak (0); |
186 | } |
307 | } |
187 | } |
308 | } |
188 | |
309 | |
189 | LEAVE; |
310 | LEAVE; |
190 | |
311 | |
191 | errno = errorno; |
312 | errno = errorno; |
192 | count++; |
313 | count++; |
193 | } |
314 | } |
194 | |
315 | |
195 | free_req (req); |
316 | req_free (req); |
196 | } |
317 | } |
197 | |
318 | |
198 | return count; |
319 | return count; |
199 | } |
320 | } |
200 | |
321 | |
… | |
… | |
207 | pthread_t tid; |
328 | pthread_t tid; |
208 | pthread_attr_t attr; |
329 | pthread_attr_t attr; |
209 | |
330 | |
210 | pthread_attr_init (&attr); |
331 | pthread_attr_init (&attr); |
211 | pthread_attr_setstacksize (&attr, STACKSIZE); |
332 | pthread_attr_setstacksize (&attr, STACKSIZE); |
212 | // pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
333 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
213 | |
334 | |
214 | sigfillset (&fullsigset); |
335 | sigfillset (&fullsigset); |
215 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
336 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
216 | |
337 | |
217 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
338 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
… | |
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219 | |
340 | |
220 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
341 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
221 | } |
342 | } |
222 | |
343 | |
223 | static void |
344 | static void |
224 | send_req (aio_req req) |
345 | req_send (aio_req req) |
225 | { |
346 | { |
226 | while (started < wanted && nreqs >= started) |
347 | while (started < wanted && nreqs >= started) |
227 | start_thread (); |
348 | start_thread (); |
228 | |
349 | |
229 | nreqs++; |
350 | nreqs++; |
… | |
… | |
260 | { |
381 | { |
261 | aio_req req; |
382 | aio_req req; |
262 | Newz (0, req, 1, aio_cb); |
383 | Newz (0, req, 1, aio_cb); |
263 | req->type = REQ_QUIT; |
384 | req->type = REQ_QUIT; |
264 | |
385 | |
265 | send_req (req); |
386 | req_send (req); |
266 | } |
387 | } |
267 | |
388 | |
268 | static void min_parallel (int nthreads) |
389 | static void min_parallel (int nthreads) |
269 | { |
390 | { |
270 | if (wanted < nthreads) |
391 | if (wanted < nthreads) |
… | |
… | |
299 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
420 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
300 | croak ("cannot set result pipe to nonblocking mode"); |
421 | croak ("cannot set result pipe to nonblocking mode"); |
301 | |
422 | |
302 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
423 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
303 | croak ("cannot set result pipe to nonblocking mode"); |
424 | croak ("cannot set result pipe to nonblocking mode"); |
304 | } |
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305 | |
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306 | static void atfork_prepare (void) |
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307 | { |
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308 | pthread_mutex_lock (&reqlock); |
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309 | pthread_mutex_lock (&reslock); |
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310 | } |
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311 | |
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312 | static void atfork_parent (void) |
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313 | { |
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314 | pthread_mutex_unlock (&reslock); |
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315 | pthread_mutex_unlock (&reqlock); |
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316 | } |
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317 | |
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318 | static void atfork_child (void) |
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319 | { |
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320 | aio_req prv; |
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321 | |
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322 | started = 0; |
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323 | |
|
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324 | while (reqs) |
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325 | { |
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326 | prv = reqs; |
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327 | reqs = prv->next; |
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328 | free_req (prv); |
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329 | } |
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330 | |
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331 | reqs = reqe = 0; |
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332 | |
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333 | while (ress) |
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334 | { |
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335 | prv = ress; |
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336 | ress = prv->next; |
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337 | free_req (prv); |
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338 | } |
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339 | |
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340 | ress = rese = 0; |
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341 | |
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342 | close (respipe [0]); |
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343 | close (respipe [1]); |
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344 | create_pipe (); |
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345 | |
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346 | atfork_parent (); |
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347 | } |
425 | } |
348 | |
426 | |
349 | /*****************************************************************************/ |
427 | /*****************************************************************************/ |
350 | /* work around various missing functions */ |
428 | /* work around various missing functions */ |
351 | |
429 | |
… | |
… | |
356 | /* |
434 | /* |
357 | * make our pread/pwrite safe against themselves, but not against |
435 | * make our pread/pwrite safe against themselves, but not against |
358 | * normal read/write by using a mutex. slows down execution a lot, |
436 | * normal read/write by using a mutex. slows down execution a lot, |
359 | * but that's your problem, not mine. |
437 | * but that's your problem, not mine. |
360 | */ |
438 | */ |
361 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
439 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
362 | |
440 | |
363 | static ssize_t |
441 | static ssize_t |
364 | pread (int fd, void *buf, size_t count, off_t offset) |
442 | pread (int fd, void *buf, size_t count, off_t offset) |
365 | { |
443 | { |
366 | ssize_t res; |
444 | ssize_t res; |
367 | off_t ooffset; |
445 | off_t ooffset; |
368 | |
446 | |
369 | pthread_mutex_lock (&iolock); |
447 | pthread_mutex_lock (&preadwritelock); |
370 | ooffset = lseek (fd, 0, SEEK_CUR); |
448 | ooffset = lseek (fd, 0, SEEK_CUR); |
371 | lseek (fd, offset, SEEK_SET); |
449 | lseek (fd, offset, SEEK_SET); |
372 | res = read (fd, buf, count); |
450 | res = read (fd, buf, count); |
373 | lseek (fd, ooffset, SEEK_SET); |
451 | lseek (fd, ooffset, SEEK_SET); |
374 | pthread_mutex_unlock (&iolock); |
452 | pthread_mutex_unlock (&preadwritelock); |
375 | |
453 | |
376 | return res; |
454 | return res; |
377 | } |
455 | } |
378 | |
456 | |
379 | static ssize_t |
457 | static ssize_t |
380 | pwrite (int fd, void *buf, size_t count, off_t offset) |
458 | pwrite (int fd, void *buf, size_t count, off_t offset) |
381 | { |
459 | { |
382 | ssize_t res; |
460 | ssize_t res; |
383 | off_t ooffset; |
461 | off_t ooffset; |
384 | |
462 | |
385 | pthread_mutex_lock (&iolock); |
463 | pthread_mutex_lock (&preadwritelock); |
386 | ooffset = lseek (fd, 0, SEEK_CUR); |
464 | ooffset = lseek (fd, 0, SEEK_CUR); |
387 | lseek (fd, offset, SEEK_SET); |
465 | lseek (fd, offset, SEEK_SET); |
388 | res = write (fd, buf, count); |
466 | res = write (fd, buf, count); |
389 | lseek (fd, offset, SEEK_SET); |
467 | lseek (fd, offset, SEEK_SET); |
390 | pthread_mutex_unlock (&iolock); |
468 | pthread_mutex_unlock (&preadwritelock); |
391 | |
469 | |
392 | return res; |
470 | return res; |
393 | } |
471 | } |
394 | #endif |
472 | #endif |
395 | |
473 | |
… | |
… | |
398 | #endif |
476 | #endif |
399 | |
477 | |
400 | #if !HAVE_READAHEAD |
478 | #if !HAVE_READAHEAD |
401 | # define readahead aio_readahead |
479 | # define readahead aio_readahead |
402 | |
480 | |
403 | static char readahead_buf[4096]; |
|
|
404 | |
|
|
405 | static ssize_t |
481 | static ssize_t |
406 | readahead (int fd, off_t offset, size_t count) |
482 | readahead (int fd, off_t offset, size_t count) |
407 | { |
483 | { |
|
|
484 | char readahead_buf[4096]; |
|
|
485 | |
408 | while (count > 0) |
486 | while (count > 0) |
409 | { |
487 | { |
410 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
488 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
411 | |
489 | |
412 | pread (fd, readahead_buf, len, offset); |
490 | pread (fd, readahead_buf, len, offset); |
… | |
… | |
415 | } |
493 | } |
416 | |
494 | |
417 | errno = 0; |
495 | errno = 0; |
418 | } |
496 | } |
419 | #endif |
497 | #endif |
|
|
498 | |
|
|
499 | #if !HAVE_READDIR_R |
|
|
500 | # define readdir_r aio_readdir_r |
|
|
501 | |
|
|
502 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
|
503 | |
|
|
504 | static int |
|
|
505 | readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
506 | { |
|
|
507 | struct dirent *e; |
|
|
508 | int errorno; |
|
|
509 | |
|
|
510 | pthread_mutex_lock (&readdirlock); |
|
|
511 | |
|
|
512 | e = readdir (dirp); |
|
|
513 | errorno = errno; |
|
|
514 | |
|
|
515 | if (e) |
|
|
516 | { |
|
|
517 | *res = ent; |
|
|
518 | strcpy (ent->d_name, e->d_name); |
|
|
519 | } |
|
|
520 | else |
|
|
521 | *res = 0; |
|
|
522 | |
|
|
523 | pthread_mutex_unlock (&readdirlock); |
|
|
524 | |
|
|
525 | errno = errorno; |
|
|
526 | return e ? 0 : -1; |
|
|
527 | } |
|
|
528 | #endif |
|
|
529 | |
|
|
530 | /* sendfile always needs emulation */ |
|
|
531 | static ssize_t |
|
|
532 | sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
533 | { |
|
|
534 | ssize_t res; |
|
|
535 | |
|
|
536 | if (!count) |
|
|
537 | return 0; |
|
|
538 | |
|
|
539 | #if HAVE_SENDFILE |
|
|
540 | # if __linux |
|
|
541 | res = sendfile (ofd, ifd, &offset, count); |
|
|
542 | |
|
|
543 | # elif __freebsd |
|
|
544 | /* |
|
|
545 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
546 | * wasted on making it similar to other I/O functions. |
|
|
547 | */ |
|
|
548 | { |
|
|
549 | off_t sbytes; |
|
|
550 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
551 | |
|
|
552 | if (res < 0 && sbytes) |
|
|
553 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
554 | res = sbytes; |
|
|
555 | } |
|
|
556 | |
|
|
557 | # elif __hpux |
|
|
558 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
559 | |
|
|
560 | # elif __solaris |
|
|
561 | { |
|
|
562 | struct sendfilevec vec; |
|
|
563 | size_t sbytes; |
|
|
564 | |
|
|
565 | vec.sfv_fd = ifd; |
|
|
566 | vec.sfv_flag = 0; |
|
|
567 | vec.sfv_off = offset; |
|
|
568 | vec.sfv_len = count; |
|
|
569 | |
|
|
570 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
571 | |
|
|
572 | if (res < 0 && sbytes) |
|
|
573 | res = sbytes; |
|
|
574 | } |
|
|
575 | |
|
|
576 | # endif |
|
|
577 | #else |
|
|
578 | res = -1; |
|
|
579 | errno = ENOSYS; |
|
|
580 | #endif |
|
|
581 | |
|
|
582 | if (res < 0 |
|
|
583 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
584 | #if __solaris |
|
|
585 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
586 | #endif |
|
|
587 | ) |
|
|
588 | ) |
|
|
589 | { |
|
|
590 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
591 | char buf[4096]; |
|
|
592 | res = 0; |
|
|
593 | |
|
|
594 | while (count) |
|
|
595 | { |
|
|
596 | ssize_t cnt; |
|
|
597 | |
|
|
598 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
|
|
599 | |
|
|
600 | if (cnt <= 0) |
|
|
601 | { |
|
|
602 | if (cnt && !res) res = -1; |
|
|
603 | break; |
|
|
604 | } |
|
|
605 | |
|
|
606 | cnt = write (ofd, buf, cnt); |
|
|
607 | |
|
|
608 | if (cnt <= 0) |
|
|
609 | { |
|
|
610 | if (cnt && !res) res = -1; |
|
|
611 | break; |
|
|
612 | } |
|
|
613 | |
|
|
614 | offset += cnt; |
|
|
615 | res += cnt; |
|
|
616 | count -= cnt; |
|
|
617 | } |
|
|
618 | } |
|
|
619 | |
|
|
620 | return res; |
|
|
621 | } |
|
|
622 | |
|
|
623 | /* read a full directory */ |
|
|
624 | static int |
|
|
625 | scandir_ (const char *path, void **namesp) |
|
|
626 | { |
|
|
627 | DIR *dirp = opendir (path); |
|
|
628 | union |
|
|
629 | { |
|
|
630 | struct dirent d; |
|
|
631 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
632 | } u; |
|
|
633 | struct dirent *entp; |
|
|
634 | char *name, *names; |
|
|
635 | int memlen = 4096; |
|
|
636 | int memofs = 0; |
|
|
637 | int res = 0; |
|
|
638 | int errorno; |
|
|
639 | |
|
|
640 | if (!dirp) |
|
|
641 | return -1; |
|
|
642 | |
|
|
643 | names = malloc (memlen); |
|
|
644 | |
|
|
645 | for (;;) |
|
|
646 | { |
|
|
647 | errno = 0, readdir_r (dirp, &u.d, &entp); |
|
|
648 | |
|
|
649 | if (!entp) |
|
|
650 | break; |
|
|
651 | |
|
|
652 | name = entp->d_name; |
|
|
653 | |
|
|
654 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
655 | { |
|
|
656 | int len = strlen (name) + 1; |
|
|
657 | |
|
|
658 | res++; |
|
|
659 | |
|
|
660 | while (memofs + len > memlen) |
|
|
661 | { |
|
|
662 | memlen *= 2; |
|
|
663 | names = realloc (names, memlen); |
|
|
664 | if (!names) |
|
|
665 | break; |
|
|
666 | } |
|
|
667 | |
|
|
668 | memcpy (names + memofs, name, len); |
|
|
669 | memofs += len; |
|
|
670 | } |
|
|
671 | } |
|
|
672 | |
|
|
673 | errorno = errno; |
|
|
674 | closedir (dirp); |
|
|
675 | |
|
|
676 | if (errorno) |
|
|
677 | { |
|
|
678 | free (names); |
|
|
679 | errno = errorno; |
|
|
680 | res = -1; |
|
|
681 | } |
|
|
682 | |
|
|
683 | *namesp = (void *)names; |
|
|
684 | return res; |
|
|
685 | } |
420 | |
686 | |
421 | /*****************************************************************************/ |
687 | /*****************************************************************************/ |
422 | |
688 | |
423 | static void * |
689 | static void * |
424 | aio_proc (void *thr_arg) |
690 | aio_proc (void *thr_arg) |
… | |
… | |
448 | |
714 | |
449 | pthread_mutex_unlock (&reqlock); |
715 | pthread_mutex_unlock (&reqlock); |
450 | |
716 | |
451 | errno = 0; /* strictly unnecessary */ |
717 | errno = 0; /* strictly unnecessary */ |
452 | |
718 | |
453 | type = req->type; |
719 | if (!req->cancelled) |
454 | |
|
|
455 | switch (type) |
720 | switch (req->type) |
456 | { |
721 | { |
457 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
722 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
458 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
723 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
459 | |
724 | |
460 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
725 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
|
|
726 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
461 | |
727 | |
462 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
728 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
463 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
729 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
464 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
730 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
465 | |
731 | |
466 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
732 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
467 | case REQ_CLOSE: req->result = close (req->fd); break; |
733 | case REQ_CLOSE: req->result = close (req->fd); break; |
468 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
734 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
469 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
735 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
736 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
|
|
737 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
470 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
738 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
471 | |
739 | |
472 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
740 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
473 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
741 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
742 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
474 | |
743 | |
475 | case REQ_QUIT: |
744 | case REQ_QUIT: |
476 | break; |
745 | break; |
477 | |
746 | |
478 | default: |
747 | default: |
479 | req->result = ENOSYS; |
748 | req->result = ENOSYS; |
480 | break; |
749 | break; |
481 | } |
750 | } |
482 | |
751 | |
483 | req->errorno = errno; |
752 | req->errorno = errno; |
484 | |
753 | |
485 | pthread_mutex_lock (&reslock); |
754 | pthread_mutex_lock (&reslock); |
486 | |
755 | |
… | |
… | |
504 | while (type != REQ_QUIT); |
773 | while (type != REQ_QUIT); |
505 | |
774 | |
506 | return 0; |
775 | return 0; |
507 | } |
776 | } |
508 | |
777 | |
|
|
778 | /*****************************************************************************/ |
|
|
779 | |
|
|
780 | static void atfork_prepare (void) |
|
|
781 | { |
|
|
782 | pthread_mutex_lock (&reqlock); |
|
|
783 | pthread_mutex_lock (&reslock); |
|
|
784 | #if !HAVE_PREADWRITE |
|
|
785 | pthread_mutex_lock (&preadwritelock); |
|
|
786 | #endif |
|
|
787 | #if !HAVE_READDIR_R |
|
|
788 | pthread_mutex_lock (&readdirlock); |
|
|
789 | #endif |
|
|
790 | } |
|
|
791 | |
|
|
792 | static void atfork_parent (void) |
|
|
793 | { |
|
|
794 | #if !HAVE_READDIR_R |
|
|
795 | pthread_mutex_unlock (&readdirlock); |
|
|
796 | #endif |
|
|
797 | #if !HAVE_PREADWRITE |
|
|
798 | pthread_mutex_unlock (&preadwritelock); |
|
|
799 | #endif |
|
|
800 | pthread_mutex_unlock (&reslock); |
|
|
801 | pthread_mutex_unlock (&reqlock); |
|
|
802 | } |
|
|
803 | |
|
|
804 | static void atfork_child (void) |
|
|
805 | { |
|
|
806 | aio_req prv; |
|
|
807 | |
|
|
808 | started = 0; |
|
|
809 | |
|
|
810 | while (reqs) |
|
|
811 | { |
|
|
812 | prv = reqs; |
|
|
813 | reqs = prv->next; |
|
|
814 | req_free (prv); |
|
|
815 | } |
|
|
816 | |
|
|
817 | reqs = reqe = 0; |
|
|
818 | |
|
|
819 | while (ress) |
|
|
820 | { |
|
|
821 | prv = ress; |
|
|
822 | ress = prv->next; |
|
|
823 | req_free (prv); |
|
|
824 | } |
|
|
825 | |
|
|
826 | ress = rese = 0; |
|
|
827 | |
|
|
828 | close (respipe [0]); |
|
|
829 | close (respipe [1]); |
|
|
830 | create_pipe (); |
|
|
831 | |
|
|
832 | atfork_parent (); |
|
|
833 | } |
|
|
834 | |
509 | #define dREQ \ |
835 | #define dREQ \ |
510 | aio_req req; \ |
836 | aio_req req; \ |
511 | \ |
837 | \ |
512 | if (SvOK (callback) && !SvROK (callback)) \ |
838 | if (SvOK (callback) && !SvROK (callback)) \ |
513 | croak ("clalback must be undef or of reference type"); \ |
839 | croak ("callback must be undef or of reference type"); \ |
514 | \ |
840 | \ |
515 | Newz (0, req, 1, aio_cb); \ |
841 | Newz (0, req, 1, aio_cb); \ |
516 | if (!req) \ |
842 | if (!req) \ |
517 | croak ("out of memory during aio_req allocation"); \ |
843 | croak ("out of memory during aio_req allocation"); \ |
518 | \ |
844 | \ |
519 | req->callback = newSVsv (callback); |
845 | req->callback = newSVsv (callback) |
|
|
846 | |
|
|
847 | #define REQ_SEND \ |
|
|
848 | req_send (req); \ |
|
|
849 | \ |
|
|
850 | if (GIMME_V != G_VOID) \ |
|
|
851 | XPUSHs (req_sv (req)); |
520 | |
852 | |
521 | MODULE = IO::AIO PACKAGE = IO::AIO |
853 | MODULE = IO::AIO PACKAGE = IO::AIO |
522 | |
854 | |
523 | PROTOTYPES: ENABLE |
855 | PROTOTYPES: ENABLE |
524 | |
856 | |
525 | BOOT: |
857 | BOOT: |
526 | { |
858 | { |
|
|
859 | HV *stash = gv_stashpv ("IO::AIO", 1); |
|
|
860 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
|
|
861 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
862 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
|
|
863 | |
527 | create_pipe (); |
864 | create_pipe (); |
528 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
865 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
529 | } |
866 | } |
530 | |
867 | |
531 | void |
868 | void |
532 | min_parallel(nthreads) |
869 | min_parallel (nthreads) |
533 | int nthreads |
870 | int nthreads |
534 | PROTOTYPE: $ |
871 | PROTOTYPE: $ |
535 | |
872 | |
536 | void |
873 | void |
537 | max_parallel(nthreads) |
874 | max_parallel (nthreads) |
538 | int nthreads |
875 | int nthreads |
539 | PROTOTYPE: $ |
876 | PROTOTYPE: $ |
540 | |
877 | |
541 | int |
878 | int |
542 | max_outstanding(nreqs) |
879 | max_outstanding (nreqs) |
543 | int nreqs |
880 | int nreqs |
544 | PROTOTYPE: $ |
881 | PROTOTYPE: $ |
545 | CODE: |
882 | CODE: |
546 | RETVAL = max_outstanding; |
883 | RETVAL = max_outstanding; |
547 | max_outstanding = nreqs; |
884 | max_outstanding = nreqs; |
548 | |
885 | |
549 | void |
886 | void |
550 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
887 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
551 | SV * pathname |
888 | SV * pathname |
552 | int flags |
889 | int flags |
553 | int mode |
890 | int mode |
554 | SV * callback |
891 | SV * callback |
555 | PROTOTYPE: $$$;$ |
892 | PROTOTYPE: $$$;$ |
556 | CODE: |
893 | PPCODE: |
557 | { |
894 | { |
558 | dREQ; |
895 | dREQ; |
559 | |
896 | |
560 | req->type = REQ_OPEN; |
897 | req->type = REQ_OPEN; |
561 | req->data = newSVsv (pathname); |
898 | req->data = newSVsv (pathname); |
562 | req->dataptr = SvPVbyte_nolen (req->data); |
899 | req->dataptr = SvPVbyte_nolen (req->data); |
563 | req->fd = flags; |
900 | req->fd = flags; |
564 | req->mode = mode; |
901 | req->mode = mode; |
565 | |
902 | |
566 | send_req (req); |
903 | REQ_SEND; |
567 | } |
904 | } |
568 | |
905 | |
569 | void |
906 | void |
570 | aio_close(fh,callback=&PL_sv_undef) |
907 | aio_close (fh,callback=&PL_sv_undef) |
571 | SV * fh |
908 | SV * fh |
572 | SV * callback |
909 | SV * callback |
573 | PROTOTYPE: $;$ |
910 | PROTOTYPE: $;$ |
574 | ALIAS: |
911 | ALIAS: |
575 | aio_close = REQ_CLOSE |
912 | aio_close = REQ_CLOSE |
576 | aio_fsync = REQ_FSYNC |
913 | aio_fsync = REQ_FSYNC |
577 | aio_fdatasync = REQ_FDATASYNC |
914 | aio_fdatasync = REQ_FDATASYNC |
578 | CODE: |
915 | PPCODE: |
579 | { |
916 | { |
580 | dREQ; |
917 | dREQ; |
581 | |
918 | |
582 | req->type = ix; |
919 | req->type = ix; |
583 | req->fh = newSVsv (fh); |
920 | req->fh = newSVsv (fh); |
584 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
921 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
585 | |
922 | |
586 | send_req (req); |
923 | REQ_SEND (req); |
587 | } |
924 | } |
588 | |
925 | |
589 | void |
926 | void |
590 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
927 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
591 | SV * fh |
928 | SV * fh |
592 | UV offset |
929 | UV offset |
593 | IV length |
930 | UV length |
594 | SV * data |
931 | SV * data |
595 | IV dataoffset |
932 | UV dataoffset |
596 | SV * callback |
933 | SV * callback |
597 | ALIAS: |
934 | ALIAS: |
598 | aio_read = REQ_READ |
935 | aio_read = REQ_READ |
599 | aio_write = REQ_WRITE |
936 | aio_write = REQ_WRITE |
600 | PROTOTYPE: $$$$$;$ |
937 | PROTOTYPE: $$$$$;$ |
601 | CODE: |
938 | PPCODE: |
602 | { |
939 | { |
603 | aio_req req; |
940 | aio_req req; |
604 | STRLEN svlen; |
941 | STRLEN svlen; |
605 | char *svptr = SvPVbyte (data, svlen); |
942 | char *svptr = SvPVbyte (data, svlen); |
606 | |
943 | |
… | |
… | |
644 | { |
981 | { |
645 | SvREADONLY_on (data); |
982 | SvREADONLY_on (data); |
646 | req->data2ptr = (void *)data; |
983 | req->data2ptr = (void *)data; |
647 | } |
984 | } |
648 | |
985 | |
649 | send_req (req); |
986 | REQ_SEND; |
650 | } |
987 | } |
651 | } |
988 | } |
652 | |
989 | |
653 | void |
990 | void |
|
|
991 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
992 | SV * out_fh |
|
|
993 | SV * in_fh |
|
|
994 | UV in_offset |
|
|
995 | UV length |
|
|
996 | SV * callback |
|
|
997 | PROTOTYPE: $$$$;$ |
|
|
998 | PPCODE: |
|
|
999 | { |
|
|
1000 | dREQ; |
|
|
1001 | |
|
|
1002 | req->type = REQ_SENDFILE; |
|
|
1003 | req->fh = newSVsv (out_fh); |
|
|
1004 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1005 | req->fh2 = newSVsv (in_fh); |
|
|
1006 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1007 | req->offset = in_offset; |
|
|
1008 | req->length = length; |
|
|
1009 | |
|
|
1010 | REQ_SEND; |
|
|
1011 | } |
|
|
1012 | |
|
|
1013 | void |
654 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
1014 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
655 | SV * fh |
1015 | SV * fh |
656 | UV offset |
1016 | UV offset |
657 | IV length |
1017 | IV length |
658 | SV * callback |
1018 | SV * callback |
659 | PROTOTYPE: $$$;$ |
1019 | PROTOTYPE: $$$;$ |
660 | CODE: |
1020 | PPCODE: |
661 | { |
1021 | { |
662 | dREQ; |
1022 | dREQ; |
663 | |
1023 | |
664 | req->type = REQ_READAHEAD; |
1024 | req->type = REQ_READAHEAD; |
665 | req->fh = newSVsv (fh); |
1025 | req->fh = newSVsv (fh); |
666 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
1026 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
667 | req->offset = offset; |
1027 | req->offset = offset; |
668 | req->length = length; |
1028 | req->length = length; |
669 | |
1029 | |
670 | send_req (req); |
1030 | REQ_SEND; |
671 | } |
1031 | } |
672 | |
1032 | |
673 | void |
1033 | void |
674 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
1034 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
675 | SV * fh_or_path |
1035 | SV * fh_or_path |
676 | SV * callback |
1036 | SV * callback |
677 | ALIAS: |
1037 | ALIAS: |
678 | aio_stat = REQ_STAT |
1038 | aio_stat = REQ_STAT |
679 | aio_lstat = REQ_LSTAT |
1039 | aio_lstat = REQ_LSTAT |
680 | CODE: |
1040 | PPCODE: |
681 | { |
1041 | { |
682 | dREQ; |
1042 | dREQ; |
683 | |
1043 | |
684 | New (0, req->statdata, 1, Stat_t); |
1044 | New (0, req->statdata, 1, Stat_t); |
685 | if (!req->statdata) |
1045 | if (!req->statdata) |
686 | { |
1046 | { |
687 | free_req (req); |
1047 | req_free (req); |
688 | croak ("out of memory during aio_req->statdata allocation"); |
1048 | croak ("out of memory during aio_req->statdata allocation"); |
689 | } |
1049 | } |
690 | |
1050 | |
691 | if (SvPOK (fh_or_path)) |
1051 | if (SvPOK (fh_or_path)) |
692 | { |
1052 | { |
… | |
… | |
699 | req->type = REQ_FSTAT; |
1059 | req->type = REQ_FSTAT; |
700 | req->fh = newSVsv (fh_or_path); |
1060 | req->fh = newSVsv (fh_or_path); |
701 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1061 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
702 | } |
1062 | } |
703 | |
1063 | |
704 | send_req (req); |
1064 | REQ_SEND; |
705 | } |
1065 | } |
706 | |
1066 | |
707 | void |
1067 | void |
708 | aio_unlink(pathname,callback=&PL_sv_undef) |
1068 | aio_unlink (pathname,callback=&PL_sv_undef) |
709 | SV * pathname |
1069 | SV * pathname |
710 | SV * callback |
1070 | SV * callback |
711 | ALIAS: |
1071 | ALIAS: |
712 | aio_unlink = REQ_UNLINK |
1072 | aio_unlink = REQ_UNLINK |
713 | aio_rmdir = REQ_RMDIR |
1073 | aio_rmdir = REQ_RMDIR |
|
|
1074 | aio_readdir = REQ_READDIR |
714 | CODE: |
1075 | PPCODE: |
715 | { |
1076 | { |
716 | dREQ; |
1077 | dREQ; |
717 | |
1078 | |
718 | req->type = ix; |
1079 | req->type = ix; |
719 | req->data = newSVsv (pathname); |
1080 | req->data = newSVsv (pathname); |
720 | req->dataptr = SvPVbyte_nolen (req->data); |
1081 | req->dataptr = SvPVbyte_nolen (req->data); |
721 | |
1082 | |
722 | send_req (req); |
1083 | REQ_SEND; |
723 | } |
1084 | } |
724 | |
1085 | |
725 | void |
1086 | void |
726 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
1087 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
727 | SV * oldpath |
1088 | SV * oldpath |
728 | SV * newpath |
1089 | SV * newpath |
729 | SV * callback |
1090 | SV * callback |
|
|
1091 | ALIAS: |
|
|
1092 | aio_link = REQ_LINK |
|
|
1093 | aio_symlink = REQ_SYMLINK |
|
|
1094 | aio_rename = REQ_RENAME |
730 | CODE: |
1095 | PPCODE: |
731 | { |
1096 | { |
732 | dREQ; |
1097 | dREQ; |
733 | |
1098 | |
734 | req->type = REQ_SYMLINK; |
1099 | req->type = ix; |
735 | req->fh = newSVsv (oldpath); |
1100 | req->fh = newSVsv (oldpath); |
736 | req->data2ptr = SvPVbyte_nolen (req->fh); |
1101 | req->data2ptr = SvPVbyte_nolen (req->fh); |
737 | req->data = newSVsv (newpath); |
1102 | req->data = newSVsv (newpath); |
738 | req->dataptr = SvPVbyte_nolen (req->data); |
1103 | req->dataptr = SvPVbyte_nolen (req->data); |
739 | |
1104 | |
740 | send_req (req); |
1105 | REQ_SEND; |
741 | } |
1106 | } |
742 | |
1107 | |
|
|
1108 | #if 0 |
|
|
1109 | |
|
|
1110 | # undocumented, because it does not cancel active requests |
743 | void |
1111 | void |
|
|
1112 | cancel_most_requests () |
|
|
1113 | PROTOTYPE: |
|
|
1114 | CODE: |
|
|
1115 | { |
|
|
1116 | aio_req *req; |
|
|
1117 | |
|
|
1118 | pthread_mutex_lock (&reqlock); |
|
|
1119 | for (req = reqs; req; req = req->next) |
|
|
1120 | req->flags |= 1; |
|
|
1121 | pthread_mutex_unlock (&reqlock); |
|
|
1122 | |
|
|
1123 | pthread_mutex_lock (&reslock); |
|
|
1124 | for (req = ress; req; req = req->next) |
|
|
1125 | req->flags |= 1; |
|
|
1126 | pthread_mutex_unlock (&reslock); |
|
|
1127 | } |
|
|
1128 | |
|
|
1129 | #endif |
|
|
1130 | |
|
|
1131 | void |
744 | flush() |
1132 | flush () |
745 | PROTOTYPE: |
1133 | PROTOTYPE: |
746 | CODE: |
1134 | CODE: |
747 | while (nreqs) |
1135 | while (nreqs) |
748 | { |
1136 | { |
749 | poll_wait (); |
1137 | poll_wait (); |
… | |
… | |
789 | CODE: |
1177 | CODE: |
790 | RETVAL = nreqs; |
1178 | RETVAL = nreqs; |
791 | OUTPUT: |
1179 | OUTPUT: |
792 | RETVAL |
1180 | RETVAL |
793 | |
1181 | |
|
|
1182 | MODULE = IO::AIO PACKAGE = IO::AIO::CB |
|
|
1183 | |
|
|
1184 | void |
|
|
1185 | cancel (aio_req_ornot req) |
|
|
1186 | PROTOTYPE: |
|
|
1187 | CODE: |
|
|
1188 | req->cancelled = 1; |
|
|
1189 | |