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1 | #if __linux |
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2 | # define _GNU_SOURCE |
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3 | #endif |
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4 | |
1 | #define _REENTRANT 1 |
5 | #define _REENTRANT 1 |
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6 | |
2 | #include <errno.h> |
7 | #include <errno.h> |
3 | |
8 | |
4 | #include "EXTERN.h" |
9 | #include "EXTERN.h" |
5 | #include "perl.h" |
10 | #include "perl.h" |
6 | #include "XSUB.h" |
11 | #include "XSUB.h" |
… | |
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41 | # define NAME_MAX 4096 |
46 | # define NAME_MAX 4096 |
42 | #endif |
47 | #endif |
43 | |
48 | |
44 | #if __ia64 |
49 | #if __ia64 |
45 | # define STACKSIZE 65536 |
50 | # define STACKSIZE 65536 |
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51 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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52 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
53 | #else |
47 | # define STACKSIZE 8192 |
54 | # define STACKSIZE 16384 |
48 | #endif |
55 | #endif |
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56 | |
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57 | /* buffer size for various temporary buffers */ |
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58 | #define AIO_BUFSIZE 65536 |
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59 | |
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60 | #define dBUF \ |
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61 | char *aio_buf = malloc (AIO_BUFSIZE); \ |
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62 | if (!aio_buf) \ |
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63 | return -1; |
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64 | |
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65 | #define fBUF free (aio_buf) |
49 | |
66 | |
50 | enum { |
67 | enum { |
51 | REQ_QUIT, |
68 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
69 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
70 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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… | |
55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
72 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
73 | REQ_FSYNC, REQ_FDATASYNC, |
57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
74 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
58 | REQ_READDIR, |
75 | REQ_READDIR, |
59 | REQ_LINK, REQ_SYMLINK, |
76 | REQ_LINK, REQ_SYMLINK, |
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77 | REQ_GROUP, REQ_NOP, |
60 | REQ_SLEEP, |
78 | REQ_SLEEP, |
61 | REQ_GROUP, |
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62 | }; |
79 | }; |
63 | |
80 | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
81 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
82 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
83 | |
67 | typedef struct aio_cb |
84 | typedef struct aio_cb |
68 | { |
85 | { |
69 | struct aio_cb *grp, *grp_prev, *grp_next; |
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70 | |
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71 | struct aio_cb *volatile next; |
86 | struct aio_cb *volatile next; |
72 | |
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73 | SV *self; /* the perl counterpart of this request, if any */ |
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74 | |
87 | |
75 | SV *data, *callback; |
88 | SV *data, *callback; |
76 | SV *fh, *fh2; |
89 | SV *fh, *fh2; |
77 | void *dataptr, *data2ptr; |
90 | void *dataptr, *data2ptr; |
78 | Stat_t *statdata; |
91 | Stat_t *statdata; |
79 | off_t offset; |
92 | off_t offset; |
80 | size_t length; |
93 | size_t length; |
81 | ssize_t result; |
94 | ssize_t result; |
82 | |
95 | |
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96 | STRLEN dataoffset; |
83 | int type; |
97 | int type; |
84 | int fd, fd2; |
98 | int fd, fd2; |
85 | int errorno; |
99 | int errorno; |
86 | STRLEN dataoffset; |
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87 | mode_t mode; /* open */ |
100 | mode_t mode; /* open */ |
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101 | |
88 | unsigned char cancelled; |
102 | unsigned char flags; |
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103 | unsigned char pri; |
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104 | |
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105 | SV *self; /* the perl counterpart of this request, if any */ |
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106 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
89 | } aio_cb; |
107 | } aio_cb; |
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108 | |
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109 | enum { |
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110 | FLAG_CANCELLED = 0x01, |
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111 | }; |
90 | |
112 | |
91 | typedef aio_cb *aio_req; |
113 | typedef aio_cb *aio_req; |
92 | typedef aio_cb *aio_req_ornot; |
114 | typedef aio_cb *aio_req_ornot; |
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115 | |
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116 | enum { |
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117 | PRI_MIN = -4, |
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118 | PRI_MAX = 4, |
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119 | |
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120 | DEFAULT_PRI = 0, |
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121 | PRI_BIAS = -PRI_MIN, |
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122 | }; |
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123 | |
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124 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
93 | |
125 | |
94 | static int started, wanted; |
126 | static int started, wanted; |
95 | static volatile int nreqs; |
127 | static volatile int nreqs; |
96 | static int max_outstanding = 1<<30; |
128 | static int max_outstanding = 1<<30; |
97 | static int respipe [2]; |
129 | static int respipe [2]; |
98 | |
130 | |
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131 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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132 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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133 | #else |
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134 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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135 | #endif |
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136 | |
99 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
137 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
100 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
138 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
139 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
102 | |
140 | |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
141 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
142 | static volatile aio_req ress, rese; /* queue start, queue end */ |
105 | |
143 | |
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144 | static void req_invoke (aio_req req); |
106 | static void req_free (aio_req req); |
145 | static void req_free (aio_req req); |
107 | |
146 | |
108 | /* must be called at most once */ |
147 | /* must be called at most once */ |
109 | static SV *req_sv (aio_req req, const char *klass) |
148 | static SV *req_sv (aio_req req, const char *klass) |
110 | { |
149 | { |
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150 | if (!req->self) |
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151 | { |
111 | req->self = (SV *)newHV (); |
152 | req->self = (SV *)newHV (); |
112 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
153 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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154 | } |
113 | |
155 | |
114 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
156 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
115 | } |
157 | } |
116 | |
158 | |
117 | static aio_req SvAIO_REQ (SV *sv) |
159 | static aio_req SvAIO_REQ (SV *sv) |
118 | { |
160 | { |
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161 | MAGIC *mg; |
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162 | |
119 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
163 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
120 | croak ("object of class " AIO_REQ_KLASS " expected"); |
164 | croak ("object of class " AIO_REQ_KLASS " expected"); |
121 | |
165 | |
122 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
166 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
123 | |
167 | |
124 | return mg ? (aio_req)mg->mg_ptr : 0; |
168 | return mg ? (aio_req)mg->mg_ptr : 0; |
125 | } |
169 | } |
126 | |
170 | |
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171 | static void aio_grp_feed (aio_req grp) |
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172 | { |
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173 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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174 | { |
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175 | int old_len = grp->length; |
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176 | |
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177 | if (grp->fh2 && SvOK (grp->fh2)) |
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178 | { |
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179 | dSP; |
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180 | |
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181 | ENTER; |
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182 | SAVETMPS; |
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183 | PUSHMARK (SP); |
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184 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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185 | PUTBACK; |
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186 | call_sv (grp->fh2, G_VOID | G_EVAL); |
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187 | SPAGAIN; |
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188 | FREETMPS; |
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189 | LEAVE; |
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190 | } |
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191 | |
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192 | /* stop if no progress has been made */ |
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193 | if (old_len == grp->length) |
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194 | { |
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195 | SvREFCNT_dec (grp->fh2); |
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196 | grp->fh2 = 0; |
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197 | break; |
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198 | } |
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199 | } |
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200 | } |
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201 | |
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202 | static void aio_grp_dec (aio_req grp) |
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203 | { |
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204 | --grp->length; |
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205 | |
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206 | /* call feeder, if applicable */ |
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207 | aio_grp_feed (grp); |
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208 | |
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209 | /* finish, if done */ |
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210 | if (!grp->length && grp->fd) |
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211 | { |
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212 | req_invoke (grp); |
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213 | req_free (grp); |
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214 | } |
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215 | } |
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216 | |
127 | static void poll_wait () |
217 | static void poll_wait () |
128 | { |
218 | { |
129 | if (nreqs && !ress) |
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130 | { |
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131 | fd_set rfd; |
219 | fd_set rfd; |
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220 | |
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221 | while (nreqs) |
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222 | { |
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223 | aio_req req; |
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224 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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225 | pthread_mutex_lock (&reslock); |
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226 | #endif |
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227 | req = ress; |
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228 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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229 | pthread_mutex_unlock (&reslock); |
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230 | #endif |
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231 | |
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232 | if (req) |
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233 | return; |
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234 | |
132 | FD_ZERO(&rfd); |
235 | FD_ZERO(&rfd); |
133 | FD_SET(respipe [0], &rfd); |
236 | FD_SET(respipe [0], &rfd); |
134 | |
237 | |
135 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
238 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
136 | } |
239 | } |
… | |
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139 | static void req_invoke (aio_req req) |
242 | static void req_invoke (aio_req req) |
140 | { |
243 | { |
141 | dSP; |
244 | dSP; |
142 | int errorno = errno; |
245 | int errorno = errno; |
143 | |
246 | |
144 | if (req->cancelled || !SvOK (req->callback)) |
247 | if (req->flags & FLAG_CANCELLED || !SvOK (req->callback)) |
145 | return; |
248 | return; |
146 | |
249 | |
147 | errno = req->errorno; |
250 | errno = req->errorno; |
148 | |
251 | |
149 | ENTER; |
252 | ENTER; |
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253 | SAVETMPS; |
150 | PUSHMARK (SP); |
254 | PUSHMARK (SP); |
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255 | EXTEND (SP, 1); |
151 | |
256 | |
152 | switch (req->type) |
257 | switch (req->type) |
153 | { |
258 | { |
154 | case REQ_READDIR: |
259 | case REQ_READDIR: |
155 | { |
260 | { |
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170 | } |
275 | } |
171 | |
276 | |
172 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
277 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
173 | } |
278 | } |
174 | |
279 | |
175 | XPUSHs (rv); |
280 | PUSHs (rv); |
176 | } |
281 | } |
177 | break; |
282 | break; |
178 | |
283 | |
179 | case REQ_OPEN: |
284 | case REQ_OPEN: |
180 | { |
285 | { |
181 | /* convert fd to fh */ |
286 | /* convert fd to fh */ |
182 | SV *fh; |
287 | SV *fh; |
183 | |
288 | |
184 | XPUSHs (sv_2mortal (newSViv (req->result))); |
289 | PUSHs (sv_2mortal (newSViv (req->result))); |
185 | PUTBACK; |
290 | PUTBACK; |
186 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
291 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
187 | SPAGAIN; |
292 | SPAGAIN; |
188 | |
293 | |
189 | fh = SvREFCNT_inc (POPs); |
294 | fh = SvREFCNT_inc (POPs); |
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191 | PUSHMARK (SP); |
296 | PUSHMARK (SP); |
192 | XPUSHs (sv_2mortal (fh)); |
297 | XPUSHs (sv_2mortal (fh)); |
193 | } |
298 | } |
194 | break; |
299 | break; |
195 | |
300 | |
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301 | case REQ_GROUP: |
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302 | req->fd = 2; /* mark group as finished */ |
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303 | |
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304 | if (req->data) |
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305 | { |
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306 | int i; |
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307 | AV *av = (AV *)req->data; |
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308 | |
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309 | EXTEND (SP, AvFILL (av) + 1); |
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310 | for (i = 0; i <= AvFILL (av); ++i) |
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311 | PUSHs (*av_fetch (av, i, 0)); |
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312 | } |
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313 | break; |
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314 | |
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315 | case REQ_NOP: |
196 | case REQ_SLEEP: |
316 | case REQ_SLEEP: |
197 | case REQ_GROUP: |
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198 | break; |
317 | break; |
199 | |
318 | |
200 | default: |
319 | default: |
201 | XPUSHs (sv_2mortal (newSViv (req->result))); |
320 | PUSHs (sv_2mortal (newSViv (req->result))); |
202 | break; |
321 | break; |
203 | } |
322 | } |
204 | |
323 | |
205 | |
324 | |
206 | PUTBACK; |
325 | PUTBACK; |
207 | call_sv (req->callback, G_VOID | G_EVAL); |
326 | call_sv (req->callback, G_VOID | G_EVAL); |
208 | SPAGAIN; |
327 | SPAGAIN; |
209 | |
328 | |
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329 | FREETMPS; |
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330 | LEAVE; |
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331 | |
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332 | errno = errorno; |
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333 | |
210 | if (SvTRUE (ERRSV)) |
334 | if (SvTRUE (ERRSV)) |
211 | { |
335 | { |
212 | req_free (req); |
336 | req_free (req); |
213 | croak (0); |
337 | croak (0); |
214 | } |
338 | } |
215 | |
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216 | LEAVE; |
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217 | |
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218 | errno = errorno; |
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219 | } |
339 | } |
220 | |
340 | |
221 | static void req_free (aio_req req) |
341 | static void req_free (aio_req req) |
222 | { |
342 | { |
223 | if (req->grp) |
343 | if (req->grp) |
224 | { |
344 | { |
225 | aio_req grp = req->grp; |
345 | aio_req grp = req->grp; |
226 | |
346 | |
227 | /* unlink request */ |
347 | /* unlink request */ |
228 | req->grp_next->grp_prev = req->grp_prev; |
348 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
229 | req->grp_prev->grp_next = req->grp_next; |
349 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
230 | |
350 | |
231 | if (grp->grp_next == grp && grp->fd) |
351 | if (grp->grp_first == req) |
232 | { |
352 | grp->grp_first = req->grp_next; |
233 | req_invoke (grp); |
353 | |
234 | req_free (grp); |
354 | aio_grp_dec (grp); |
235 | } |
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236 | } |
355 | } |
237 | |
356 | |
238 | if (req->self) |
357 | if (req->self) |
239 | { |
358 | { |
240 | sv_unmagic (req->self, PERL_MAGIC_ext); |
359 | sv_unmagic (req->self, PERL_MAGIC_ext); |
241 | SvREFCNT_dec (req->self); |
360 | SvREFCNT_dec (req->self); |
242 | } |
361 | } |
243 | |
362 | |
244 | if (req->data) |
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245 | SvREFCNT_dec (req->data); |
363 | SvREFCNT_dec (req->data); |
246 | |
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247 | if (req->fh) |
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248 | SvREFCNT_dec (req->fh); |
364 | SvREFCNT_dec (req->fh); |
249 | |
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250 | if (req->fh2) |
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251 | SvREFCNT_dec (req->fh2); |
365 | SvREFCNT_dec (req->fh2); |
252 | |
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253 | if (req->statdata) |
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254 | Safefree (req->statdata); |
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255 | |
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256 | if (req->callback) |
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257 | SvREFCNT_dec (req->callback); |
366 | SvREFCNT_dec (req->callback); |
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367 | Safefree (req->statdata); |
258 | |
368 | |
259 | if (req->type == REQ_READDIR && req->result >= 0) |
369 | if (req->type == REQ_READDIR && req->result >= 0) |
260 | free (req->data2ptr); |
370 | free (req->data2ptr); |
261 | |
371 | |
262 | Safefree (req); |
372 | Safefree (req); |
263 | } |
373 | } |
264 | |
374 | |
265 | static void req_cancel (aio_req req) |
375 | static void req_cancel (aio_req req) |
266 | { |
376 | { |
267 | req->cancelled = 1; |
377 | req->flags |= FLAG_CANCELLED; |
268 | |
378 | |
269 | if (req->type == REQ_GROUP) |
379 | if (req->type == REQ_GROUP) |
270 | { |
380 | { |
271 | aio_req sub; |
381 | aio_req sub; |
272 | |
382 | |
273 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
383 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
274 | req_cancel (sub); |
384 | req_cancel (sub); |
275 | } |
385 | } |
276 | } |
386 | } |
277 | |
387 | |
278 | static int poll_cb () |
388 | static int poll_cb () |
… | |
… | |
305 | pthread_mutex_unlock (&reslock); |
415 | pthread_mutex_unlock (&reslock); |
306 | |
416 | |
307 | if (!req) |
417 | if (!req) |
308 | break; |
418 | break; |
309 | |
419 | |
310 | nreqs--; |
420 | --nreqs; |
311 | |
421 | |
312 | if (req->type == REQ_QUIT) |
422 | if (req->type == REQ_QUIT) |
313 | started--; |
423 | started--; |
314 | else if (req->type == REQ_GROUP && req->grp_next != req) |
424 | else if (req->type == REQ_GROUP && req->length) |
315 | { |
425 | { |
316 | req->fd = 1; /* mark request as delayed */ |
426 | req->fd = 1; /* mark request as delayed */ |
317 | continue; |
427 | continue; |
318 | } |
428 | } |
319 | else |
429 | else |
… | |
… | |
366 | static void req_send (aio_req req) |
476 | static void req_send (aio_req req) |
367 | { |
477 | { |
368 | while (started < wanted && nreqs >= started) |
478 | while (started < wanted && nreqs >= started) |
369 | start_thread (); |
479 | start_thread (); |
370 | |
480 | |
371 | nreqs++; |
481 | ++nreqs; |
372 | |
482 | |
373 | pthread_mutex_lock (&reqlock); |
483 | pthread_mutex_lock (&reqlock); |
374 | |
484 | |
375 | req->next = 0; |
485 | req->next = 0; |
376 | |
486 | |
… | |
… | |
496 | #if !HAVE_READAHEAD |
606 | #if !HAVE_READAHEAD |
497 | # define readahead aio_readahead |
607 | # define readahead aio_readahead |
498 | |
608 | |
499 | static ssize_t readahead (int fd, off_t offset, size_t count) |
609 | static ssize_t readahead (int fd, off_t offset, size_t count) |
500 | { |
610 | { |
501 | char readahead_buf[4096]; |
611 | dBUF; |
502 | |
612 | |
503 | while (count > 0) |
613 | while (count > 0) |
504 | { |
614 | { |
505 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
615 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
506 | |
616 | |
507 | pread (fd, readahead_buf, len, offset); |
617 | pread (fd, aio_buf, len, offset); |
508 | offset += len; |
618 | offset += len; |
509 | count -= len; |
619 | count -= len; |
510 | } |
620 | } |
|
|
621 | |
|
|
622 | fBUF; |
511 | |
623 | |
512 | errno = 0; |
624 | errno = 0; |
513 | } |
625 | } |
514 | #endif |
626 | #endif |
515 | |
627 | |
… | |
… | |
601 | #endif |
713 | #endif |
602 | ) |
714 | ) |
603 | ) |
715 | ) |
604 | { |
716 | { |
605 | /* emulate sendfile. this is a major pain in the ass */ |
717 | /* emulate sendfile. this is a major pain in the ass */ |
606 | char buf[4096]; |
718 | dBUF; |
|
|
719 | |
607 | res = 0; |
720 | res = 0; |
608 | |
721 | |
609 | while (count) |
722 | while (count) |
610 | { |
723 | { |
611 | ssize_t cnt; |
724 | ssize_t cnt; |
612 | |
725 | |
613 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
726 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
614 | |
727 | |
615 | if (cnt <= 0) |
728 | if (cnt <= 0) |
616 | { |
729 | { |
617 | if (cnt && !res) res = -1; |
730 | if (cnt && !res) res = -1; |
618 | break; |
731 | break; |
619 | } |
732 | } |
620 | |
733 | |
621 | cnt = write (ofd, buf, cnt); |
734 | cnt = write (ofd, aio_buf, cnt); |
622 | |
735 | |
623 | if (cnt <= 0) |
736 | if (cnt <= 0) |
624 | { |
737 | { |
625 | if (cnt && !res) res = -1; |
738 | if (cnt && !res) res = -1; |
626 | break; |
739 | break; |
… | |
… | |
628 | |
741 | |
629 | offset += cnt; |
742 | offset += cnt; |
630 | res += cnt; |
743 | res += cnt; |
631 | count -= cnt; |
744 | count -= cnt; |
632 | } |
745 | } |
|
|
746 | |
|
|
747 | fBUF; |
633 | } |
748 | } |
634 | |
749 | |
635 | return res; |
750 | return res; |
636 | } |
751 | } |
637 | |
752 | |
638 | /* read a full directory */ |
753 | /* read a full directory */ |
639 | static int scandir_ (const char *path, void **namesp) |
754 | static int scandir_ (const char *path, void **namesp) |
640 | { |
755 | { |
641 | DIR *dirp = opendir (path); |
756 | DIR *dirp; |
642 | union |
757 | union |
643 | { |
758 | { |
644 | struct dirent d; |
759 | struct dirent d; |
645 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
760 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
646 | } u; |
761 | } *u; |
647 | struct dirent *entp; |
762 | struct dirent *entp; |
648 | char *name, *names; |
763 | char *name, *names; |
649 | int memlen = 4096; |
764 | int memlen = 4096; |
650 | int memofs = 0; |
765 | int memofs = 0; |
651 | int res = 0; |
766 | int res = 0; |
652 | int errorno; |
767 | int errorno; |
653 | |
768 | |
|
|
769 | dirp = opendir (path); |
654 | if (!dirp) |
770 | if (!dirp) |
655 | return -1; |
771 | return -1; |
656 | |
772 | |
|
|
773 | u = malloc (sizeof (*u)); |
657 | names = malloc (memlen); |
774 | names = malloc (memlen); |
658 | |
775 | |
|
|
776 | if (u && names) |
659 | for (;;) |
777 | for (;;) |
660 | { |
778 | { |
|
|
779 | errno = 0; |
661 | errno = 0, readdir_r (dirp, &u.d, &entp); |
780 | readdir_r (dirp, &u->d, &entp); |
662 | |
781 | |
663 | if (!entp) |
782 | if (!entp) |
664 | break; |
783 | break; |
665 | |
784 | |
666 | name = entp->d_name; |
785 | name = entp->d_name; |
667 | |
786 | |
668 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
787 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
669 | { |
788 | { |
670 | int len = strlen (name) + 1; |
789 | int len = strlen (name) + 1; |
671 | |
790 | |
672 | res++; |
791 | res++; |
673 | |
792 | |
674 | while (memofs + len > memlen) |
793 | while (memofs + len > memlen) |
675 | { |
794 | { |
676 | memlen *= 2; |
795 | memlen *= 2; |
677 | names = realloc (names, memlen); |
796 | names = realloc (names, memlen); |
678 | if (!names) |
797 | if (!names) |
679 | break; |
798 | break; |
680 | } |
799 | } |
681 | |
800 | |
682 | memcpy (names + memofs, name, len); |
801 | memcpy (names + memofs, name, len); |
683 | memofs += len; |
802 | memofs += len; |
684 | } |
803 | } |
685 | } |
804 | } |
686 | |
805 | |
687 | errorno = errno; |
806 | errorno = errno; |
|
|
807 | free (u); |
688 | closedir (dirp); |
808 | closedir (dirp); |
689 | |
809 | |
690 | if (errorno) |
810 | if (errorno) |
691 | { |
811 | { |
692 | free (names); |
812 | free (names); |
… | |
… | |
726 | } |
846 | } |
727 | |
847 | |
728 | pthread_mutex_unlock (&reqlock); |
848 | pthread_mutex_unlock (&reqlock); |
729 | |
849 | |
730 | errno = 0; /* strictly unnecessary */ |
850 | errno = 0; /* strictly unnecessary */ |
|
|
851 | type = req->type; /* remember type for QUIT check */ |
731 | |
852 | |
732 | if (!req->cancelled) |
853 | if (!(req->flags & FLAG_CANCELLED)) |
733 | switch (req->type) |
854 | switch (type) |
734 | { |
855 | { |
735 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
856 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
736 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
857 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
737 | |
858 | |
738 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
859 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
… | |
… | |
762 | tv.tv_usec = req->fd2; |
883 | tv.tv_usec = req->fd2; |
763 | |
884 | |
764 | req->result = select (0, 0, 0, 0, &tv); |
885 | req->result = select (0, 0, 0, 0, &tv); |
765 | } |
886 | } |
766 | |
887 | |
|
|
888 | case REQ_GROUP: |
|
|
889 | case REQ_NOP: |
767 | case REQ_QUIT: |
890 | case REQ_QUIT: |
768 | break; |
891 | break; |
769 | |
892 | |
770 | default: |
893 | default: |
771 | req->result = ENOSYS; |
894 | req->result = ENOSYS; |
… | |
… | |
855 | atfork_parent (); |
978 | atfork_parent (); |
856 | } |
979 | } |
857 | |
980 | |
858 | #define dREQ \ |
981 | #define dREQ \ |
859 | aio_req req; \ |
982 | aio_req req; \ |
|
|
983 | int req_pri = next_pri; \ |
|
|
984 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
860 | \ |
985 | \ |
861 | if (SvOK (callback) && !SvROK (callback)) \ |
986 | if (SvOK (callback) && !SvROK (callback)) \ |
862 | croak ("callback must be undef or of reference type"); \ |
987 | croak ("callback must be undef or of reference type"); \ |
863 | \ |
988 | \ |
864 | Newz (0, req, 1, aio_cb); \ |
989 | Newz (0, req, 1, aio_cb); \ |
865 | if (!req) \ |
990 | if (!req) \ |
866 | croak ("out of memory during aio_req allocation"); \ |
991 | croak ("out of memory during aio_req allocation"); \ |
867 | \ |
992 | \ |
868 | req->callback = newSVsv (callback) |
993 | req->callback = newSVsv (callback); \ |
|
|
994 | req->pri = req_pri |
869 | |
995 | |
870 | #define REQ_SEND \ |
996 | #define REQ_SEND \ |
871 | req_send (req); \ |
997 | req_send (req); \ |
872 | \ |
998 | \ |
873 | if (GIMME_V != G_VOID) \ |
999 | if (GIMME_V != G_VOID) \ |
… | |
… | |
1148 | SV * callback |
1274 | SV * callback |
1149 | PROTOTYPE: ;$ |
1275 | PROTOTYPE: ;$ |
1150 | PPCODE: |
1276 | PPCODE: |
1151 | { |
1277 | { |
1152 | dREQ; |
1278 | dREQ; |
|
|
1279 | |
1153 | req->type = REQ_GROUP; |
1280 | req->type = REQ_GROUP; |
1154 | req->grp_next = req; |
|
|
1155 | req->grp_prev = req; |
|
|
1156 | |
|
|
1157 | req_send (req); |
1281 | req_send (req); |
|
|
1282 | |
1158 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1283 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1159 | } |
1284 | } |
|
|
1285 | |
|
|
1286 | void |
|
|
1287 | aio_nop (callback=&PL_sv_undef) |
|
|
1288 | SV * callback |
|
|
1289 | PPCODE: |
|
|
1290 | { |
|
|
1291 | dREQ; |
|
|
1292 | |
|
|
1293 | req->type = REQ_NOP; |
|
|
1294 | |
|
|
1295 | REQ_SEND; |
|
|
1296 | } |
|
|
1297 | |
|
|
1298 | #if 0 |
|
|
1299 | |
|
|
1300 | void |
|
|
1301 | aio_pri (int pri = DEFAULT_PRI) |
|
|
1302 | CODE: |
|
|
1303 | if (pri < PRI_MIN) pri = PRI_MIN; |
|
|
1304 | if (pri > PRI_MAX) pri = PRI_MAX; |
|
|
1305 | next_pri = pri + PRI_BIAS; |
|
|
1306 | |
|
|
1307 | #endif |
1160 | |
1308 | |
1161 | void |
1309 | void |
1162 | flush () |
1310 | flush () |
1163 | PROTOTYPE: |
1311 | PROTOTYPE: |
1164 | CODE: |
1312 | CODE: |
… | |
… | |
1207 | CODE: |
1355 | CODE: |
1208 | RETVAL = nreqs; |
1356 | RETVAL = nreqs; |
1209 | OUTPUT: |
1357 | OUTPUT: |
1210 | RETVAL |
1358 | RETVAL |
1211 | |
1359 | |
|
|
1360 | PROTOTYPES: DISABLE |
|
|
1361 | |
1212 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1362 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1213 | |
1363 | |
1214 | void |
1364 | void |
1215 | cancel (aio_req_ornot req) |
1365 | cancel (aio_req_ornot req) |
1216 | PROTOTYPE: |
1366 | PROTOTYPE: |
1217 | CODE: |
1367 | CODE: |
1218 | req_cancel (req); |
1368 | req_cancel (req); |
1219 | |
1369 | |
|
|
1370 | void |
|
|
1371 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1372 | CODE: |
|
|
1373 | SvREFCNT_dec (req->callback); |
|
|
1374 | req->callback = newSVsv (callback); |
|
|
1375 | |
1220 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1376 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1221 | |
1377 | |
1222 | void |
1378 | void |
1223 | add (aio_req grp, ...) |
1379 | add (aio_req grp, ...) |
1224 | PROTOTYPE: $;@ |
|
|
1225 | PPCODE: |
1380 | PPCODE: |
1226 | { |
1381 | { |
1227 | int i; |
1382 | int i; |
|
|
1383 | aio_req req; |
|
|
1384 | |
|
|
1385 | if (grp->fd == 2) |
|
|
1386 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1228 | |
1387 | |
1229 | for (i = 1; i < items; ++i ) |
1388 | for (i = 1; i < items; ++i ) |
1230 | { |
1389 | { |
1231 | if (GIMME_V != G_VOID) |
1390 | if (GIMME_V != G_VOID) |
1232 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1391 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1233 | |
1392 | |
1234 | aio_req req = SvAIO_REQ (ST (i)); |
1393 | req = SvAIO_REQ (ST (i)); |
1235 | printf ("req = %p\n", req);//D |
|
|
1236 | |
1394 | |
1237 | if (req) |
1395 | if (req) |
1238 | { |
1396 | { |
1239 | req->grp_prev = grp; |
1397 | ++grp->length; |
1240 | req->grp_next = grp->grp_next; |
|
|
1241 | grp->grp_next->grp_prev = req; |
|
|
1242 | grp->grp_next = req; |
|
|
1243 | |
|
|
1244 | req->grp = grp; |
1398 | req->grp = grp; |
|
|
1399 | |
|
|
1400 | req->grp_prev = 0; |
|
|
1401 | req->grp_next = grp->grp_first; |
|
|
1402 | |
|
|
1403 | if (grp->grp_first) |
|
|
1404 | grp->grp_first->grp_prev = req; |
|
|
1405 | |
|
|
1406 | grp->grp_first = req; |
1245 | } |
1407 | } |
1246 | } |
1408 | } |
1247 | } |
1409 | } |
1248 | |
1410 | |
|
|
1411 | void |
|
|
1412 | result (aio_req grp, ...) |
|
|
1413 | CODE: |
|
|
1414 | { |
|
|
1415 | int i; |
|
|
1416 | AV *av = newAV (); |
|
|
1417 | |
|
|
1418 | for (i = 1; i < items; ++i ) |
|
|
1419 | av_push (av, newSVsv (ST (i))); |
|
|
1420 | |
|
|
1421 | SvREFCNT_dec (grp->data); |
|
|
1422 | grp->data = (SV *)av; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | void |
|
|
1426 | feed_limit (aio_req grp, int limit) |
|
|
1427 | CODE: |
|
|
1428 | grp->fd2 = limit; |
|
|
1429 | aio_grp_feed (grp); |
|
|
1430 | |
|
|
1431 | void |
|
|
1432 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1433 | CODE: |
|
|
1434 | { |
|
|
1435 | SvREFCNT_dec (grp->fh2); |
|
|
1436 | grp->fh2 = newSVsv (callback); |
|
|
1437 | |
|
|
1438 | if (grp->fd2 <= 0) |
|
|
1439 | grp->fd2 = 2; |
|
|
1440 | |
|
|
1441 | aio_grp_feed (grp); |
|
|
1442 | } |
|
|
1443 | |