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1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
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4 | #if __linux |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
1 | #define _REENTRANT 1 |
8 | #define _REENTRANT 1 |
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9 | |
2 | #include <errno.h> |
10 | #include <errno.h> |
3 | |
11 | |
4 | #include "EXTERN.h" |
12 | #include "EXTERN.h" |
5 | #include "perl.h" |
13 | #include "perl.h" |
6 | #include "XSUB.h" |
14 | #include "XSUB.h" |
… | |
… | |
41 | # define NAME_MAX 4096 |
49 | # define NAME_MAX 4096 |
42 | #endif |
50 | #endif |
43 | |
51 | |
44 | #if __ia64 |
52 | #if __ia64 |
45 | # define STACKSIZE 65536 |
53 | # define STACKSIZE 65536 |
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54 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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55 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
56 | #else |
47 | # define STACKSIZE 8192 |
57 | # define STACKSIZE 16384 |
48 | #endif |
58 | #endif |
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59 | |
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60 | /* buffer size for various temporary buffers */ |
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61 | #define AIO_BUFSIZE 65536 |
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62 | |
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63 | #define dBUF \ |
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64 | char *aio_buf = malloc (AIO_BUFSIZE); \ |
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65 | if (!aio_buf) \ |
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66 | return -1; |
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67 | |
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68 | #define fBUF free (aio_buf) |
49 | |
69 | |
50 | enum { |
70 | enum { |
51 | REQ_QUIT, |
71 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
72 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
73 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
… | |
… | |
55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
75 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
76 | REQ_FSYNC, REQ_FDATASYNC, |
57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
77 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
58 | REQ_READDIR, |
78 | REQ_READDIR, |
59 | REQ_LINK, REQ_SYMLINK, |
79 | REQ_LINK, REQ_SYMLINK, |
60 | REQ_SLEEP, |
80 | REQ_GROUP, REQ_NOP, |
61 | REQ_GROUP, |
81 | REQ_BUSY, |
62 | }; |
82 | }; |
63 | |
83 | |
64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
84 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
85 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
66 | |
86 | |
67 | typedef struct aio_cb |
87 | typedef struct aio_cb |
68 | { |
88 | { |
69 | struct aio_cb *grp, *grp_prev, *grp_next; |
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70 | |
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71 | struct aio_cb *volatile next; |
89 | 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 | |
90 | |
75 | SV *data, *callback; |
91 | SV *data, *callback; |
76 | SV *fh, *fh2; |
92 | SV *fh, *fh2; |
77 | void *dataptr, *data2ptr; |
93 | void *dataptr, *data2ptr; |
78 | Stat_t *statdata; |
94 | Stat_t *statdata; |
79 | off_t offset; |
95 | off_t offset; |
80 | size_t length; |
96 | size_t length; |
81 | ssize_t result; |
97 | ssize_t result; |
82 | |
98 | |
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99 | STRLEN dataoffset; |
83 | int type; |
100 | int type; |
84 | int fd, fd2; |
101 | int fd, fd2; |
85 | int errorno; |
102 | int errorno; |
86 | STRLEN dataoffset; |
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87 | mode_t mode; /* open */ |
103 | mode_t mode; /* open */ |
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104 | |
88 | unsigned char cancelled; |
105 | unsigned char flags; |
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106 | unsigned char pri; |
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107 | |
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108 | SV *self; /* the perl counterpart of this request, if any */ |
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109 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
89 | } aio_cb; |
110 | } aio_cb; |
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111 | |
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112 | enum { |
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113 | FLAG_CANCELLED = 0x01, |
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114 | }; |
90 | |
115 | |
91 | typedef aio_cb *aio_req; |
116 | typedef aio_cb *aio_req; |
92 | typedef aio_cb *aio_req_ornot; |
117 | typedef aio_cb *aio_req_ornot; |
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118 | |
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119 | enum { |
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120 | PRI_MIN = -4, |
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121 | PRI_MAX = 4, |
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122 | |
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123 | DEFAULT_PRI = 0, |
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124 | PRI_BIAS = -PRI_MIN, |
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125 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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126 | }; |
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127 | |
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128 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
93 | |
129 | |
94 | static int started, wanted; |
130 | static int started, wanted; |
95 | static volatile int nreqs; |
131 | static volatile int nreqs; |
96 | static int max_outstanding = 1<<30; |
132 | static int max_outstanding = 1<<30; |
97 | static int respipe [2]; |
133 | static int respipe [2]; |
98 | |
134 | |
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135 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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136 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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137 | #else |
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138 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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139 | #endif |
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140 | |
99 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
141 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
100 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
142 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
101 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
143 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
102 | |
144 | |
103 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
145 | /* |
104 | static volatile aio_req ress, rese; /* queue start, queue end */ |
146 | * a somewhat faster data structure might be nice, but |
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147 | * with 8 priorities this actually needs <20 insns |
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148 | * per shift, the most expensive operation. |
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149 | */ |
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150 | typedef struct { |
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151 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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152 | int size; |
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153 | } reqq; |
105 | |
154 | |
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155 | static reqq req_queue; |
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156 | static reqq res_queue; |
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157 | |
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158 | int reqq_push (reqq *q, aio_req req) |
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159 | { |
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160 | int pri = req->pri; |
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161 | req->next = 0; |
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162 | |
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163 | if (q->qe[pri]) |
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164 | { |
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165 | q->qe[pri]->next = req; |
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166 | q->qe[pri] = req; |
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167 | } |
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168 | else |
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169 | q->qe[pri] = q->qs[pri] = req; |
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170 | |
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171 | return q->size++; |
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172 | } |
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173 | |
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174 | aio_req reqq_shift (reqq *q) |
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175 | { |
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176 | int pri; |
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177 | |
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178 | if (!q->size) |
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179 | return 0; |
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180 | |
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181 | --q->size; |
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182 | |
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183 | for (pri = NUM_PRI; pri--; ) |
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184 | { |
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185 | aio_req req = q->qs[pri]; |
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186 | |
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187 | if (req) |
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188 | { |
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189 | if (!(q->qs[pri] = req->next)) |
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190 | q->qe[pri] = 0; |
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191 | |
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192 | return req; |
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193 | } |
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194 | } |
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195 | |
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196 | abort (); |
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197 | } |
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198 | |
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199 | static void req_invoke (aio_req req); |
106 | static void req_free (aio_req req); |
200 | static void req_free (aio_req req); |
107 | |
201 | |
108 | /* must be called at most once */ |
202 | /* must be called at most once */ |
109 | static SV *req_sv (aio_req req, const char *klass) |
203 | static SV *req_sv (aio_req req, const char *klass) |
110 | { |
204 | { |
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205 | if (!req->self) |
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206 | { |
111 | req->self = (SV *)newHV (); |
207 | req->self = (SV *)newHV (); |
112 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
208 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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209 | } |
113 | |
210 | |
114 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
211 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
115 | } |
212 | } |
116 | |
213 | |
117 | static aio_req SvAIO_REQ (SV *sv) |
214 | static aio_req SvAIO_REQ (SV *sv) |
118 | { |
215 | { |
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216 | MAGIC *mg; |
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217 | |
119 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
218 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
120 | croak ("object of class " AIO_REQ_KLASS " expected"); |
219 | croak ("object of class " AIO_REQ_KLASS " expected"); |
121 | |
220 | |
122 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
221 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
123 | |
222 | |
124 | return mg ? (aio_req)mg->mg_ptr : 0; |
223 | return mg ? (aio_req)mg->mg_ptr : 0; |
125 | } |
224 | } |
126 | |
225 | |
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226 | static void aio_grp_feed (aio_req grp) |
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227 | { |
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228 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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229 | { |
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230 | int old_len = grp->length; |
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231 | |
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232 | if (grp->fh2 && SvOK (grp->fh2)) |
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233 | { |
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234 | dSP; |
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235 | |
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236 | ENTER; |
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237 | SAVETMPS; |
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238 | PUSHMARK (SP); |
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239 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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240 | PUTBACK; |
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241 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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242 | SPAGAIN; |
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243 | FREETMPS; |
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244 | LEAVE; |
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245 | } |
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246 | |
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247 | /* stop if no progress has been made */ |
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248 | if (old_len == grp->length) |
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249 | { |
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250 | SvREFCNT_dec (grp->fh2); |
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251 | grp->fh2 = 0; |
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252 | break; |
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253 | } |
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254 | } |
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255 | } |
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256 | |
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257 | static void aio_grp_dec (aio_req grp) |
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258 | { |
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259 | --grp->length; |
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260 | |
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261 | /* call feeder, if applicable */ |
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262 | aio_grp_feed (grp); |
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263 | |
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264 | /* finish, if done */ |
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265 | if (!grp->length && grp->fd) |
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266 | { |
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267 | req_invoke (grp); |
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268 | req_free (grp); |
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269 | } |
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270 | } |
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271 | |
127 | static void poll_wait () |
272 | static void poll_wait () |
128 | { |
273 | { |
129 | if (nreqs && !ress) |
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130 | { |
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131 | fd_set rfd; |
274 | fd_set rfd; |
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275 | |
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276 | while (nreqs) |
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277 | { |
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278 | int size; |
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279 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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280 | pthread_mutex_lock (&reslock); |
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281 | #endif |
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282 | size = res_queue.size; |
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283 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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284 | pthread_mutex_unlock (&reslock); |
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285 | #endif |
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286 | |
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287 | if (size) |
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288 | return; |
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289 | |
132 | FD_ZERO(&rfd); |
290 | FD_ZERO(&rfd); |
133 | FD_SET(respipe [0], &rfd); |
291 | FD_SET(respipe [0], &rfd); |
134 | |
292 | |
135 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
293 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
136 | } |
294 | } |
137 | } |
295 | } |
138 | |
296 | |
139 | static void req_invoke (aio_req req) |
297 | static void req_invoke (aio_req req) |
140 | { |
298 | { |
141 | dSP; |
299 | dSP; |
142 | int errorno = errno; |
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143 | |
300 | |
144 | if (req->cancelled || !SvOK (req->callback)) |
301 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
145 | return; |
302 | { |
146 | |
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147 | errno = req->errorno; |
303 | errno = req->errorno; |
148 | |
304 | |
149 | ENTER; |
305 | ENTER; |
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306 | SAVETMPS; |
150 | PUSHMARK (SP); |
307 | PUSHMARK (SP); |
151 | EXTEND (SP, 1); |
308 | EXTEND (SP, 1); |
152 | |
309 | |
153 | switch (req->type) |
310 | switch (req->type) |
154 | { |
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155 | case REQ_READDIR: |
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156 | { |
311 | { |
157 | SV *rv = &PL_sv_undef; |
312 | case REQ_READDIR: |
158 | |
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159 | if (req->result >= 0) |
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160 | { |
313 | { |
161 | char *buf = req->data2ptr; |
314 | SV *rv = &PL_sv_undef; |
162 | AV *av = newAV (); |
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163 | |
315 | |
164 | while (req->result) |
316 | if (req->result >= 0) |
165 | { |
317 | { |
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318 | char *buf = req->data2ptr; |
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319 | AV *av = newAV (); |
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320 | |
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321 | while (req->result) |
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322 | { |
166 | SV *sv = newSVpv (buf, 0); |
323 | SV *sv = newSVpv (buf, 0); |
167 | |
324 | |
168 | av_push (av, sv); |
325 | av_push (av, sv); |
169 | buf += SvCUR (sv) + 1; |
326 | buf += SvCUR (sv) + 1; |
170 | req->result--; |
327 | req->result--; |
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328 | } |
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329 | |
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330 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
171 | } |
331 | } |
172 | |
332 | |
173 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
333 | PUSHs (rv); |
174 | } |
334 | } |
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335 | break; |
175 | |
336 | |
176 | PUSHs (rv); |
337 | case REQ_OPEN: |
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338 | { |
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339 | /* convert fd to fh */ |
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340 | SV *fh; |
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341 | |
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342 | PUSHs (sv_2mortal (newSViv (req->result))); |
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343 | PUTBACK; |
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344 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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345 | SPAGAIN; |
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346 | |
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347 | fh = SvREFCNT_inc (POPs); |
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348 | |
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349 | PUSHMARK (SP); |
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350 | XPUSHs (sv_2mortal (fh)); |
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351 | } |
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352 | break; |
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353 | |
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354 | case REQ_GROUP: |
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355 | req->fd = 2; /* mark group as finished */ |
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356 | |
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357 | if (req->data) |
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358 | { |
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359 | int i; |
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360 | AV *av = (AV *)req->data; |
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361 | |
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362 | EXTEND (SP, AvFILL (av) + 1); |
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363 | for (i = 0; i <= AvFILL (av); ++i) |
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364 | PUSHs (*av_fetch (av, i, 0)); |
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365 | } |
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366 | break; |
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367 | |
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368 | case REQ_NOP: |
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369 | case REQ_BUSY: |
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370 | break; |
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371 | |
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372 | default: |
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373 | PUSHs (sv_2mortal (newSViv (req->result))); |
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374 | break; |
177 | } |
375 | } |
178 | break; |
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179 | |
376 | |
180 | case REQ_OPEN: |
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181 | { |
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182 | /* convert fd to fh */ |
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183 | SV *fh; |
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184 | |
377 | |
185 | PUSHs (sv_2mortal (newSViv (req->result))); |
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186 | PUTBACK; |
378 | PUTBACK; |
187 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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188 | SPAGAIN; |
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189 | |
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190 | fh = SvREFCNT_inc (POPs); |
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191 | |
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192 | PUSHMARK (SP); |
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193 | XPUSHs (sv_2mortal (fh)); |
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194 | } |
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195 | break; |
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196 | |
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197 | case REQ_GROUP: |
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198 | if (req->data) |
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199 | { |
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200 | int i; |
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201 | AV *av = (AV *)req->data; |
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202 | |
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203 | EXTEND (SP, AvFILL (av) + 1); |
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204 | for (i = 0; i <= AvFILL (av); ++i) |
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205 | PUSHs (*av_fetch (av, i, 0)); |
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206 | } |
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207 | break; |
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208 | |
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209 | case REQ_SLEEP: |
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210 | break; |
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211 | |
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212 | default: |
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213 | PUSHs (sv_2mortal (newSViv (req->result))); |
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214 | break; |
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215 | } |
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216 | |
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217 | |
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218 | PUTBACK; |
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219 | call_sv (req->callback, G_VOID | G_EVAL); |
379 | call_sv (req->callback, G_VOID | G_EVAL); |
220 | SPAGAIN; |
380 | SPAGAIN; |
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381 | |
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382 | FREETMPS; |
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383 | LEAVE; |
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384 | } |
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385 | |
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386 | if (req->grp) |
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387 | { |
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388 | aio_req grp = req->grp; |
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389 | |
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390 | /* unlink request */ |
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391 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
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392 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
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393 | |
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394 | if (grp->grp_first == req) |
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395 | grp->grp_first = req->grp_next; |
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396 | |
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397 | aio_grp_dec (grp); |
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398 | } |
221 | |
399 | |
222 | if (SvTRUE (ERRSV)) |
400 | if (SvTRUE (ERRSV)) |
223 | { |
401 | { |
224 | req_free (req); |
402 | req_free (req); |
225 | croak (0); |
403 | croak (0); |
226 | } |
404 | } |
227 | |
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228 | LEAVE; |
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229 | |
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230 | errno = errorno; |
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231 | } |
405 | } |
232 | |
406 | |
233 | static void req_free (aio_req req) |
407 | static void req_free (aio_req req) |
234 | { |
408 | { |
235 | if (req->grp) |
|
|
236 | { |
|
|
237 | aio_req grp = req->grp; |
|
|
238 | |
|
|
239 | /* unlink request */ |
|
|
240 | req->grp_next->grp_prev = req->grp_prev; |
|
|
241 | req->grp_prev->grp_next = req->grp_next; |
|
|
242 | |
|
|
243 | if (grp->grp_next == grp && grp->fd) |
|
|
244 | { |
|
|
245 | req_invoke (grp); |
|
|
246 | req_free (grp); |
|
|
247 | } |
|
|
248 | } |
|
|
249 | |
|
|
250 | if (req->self) |
409 | if (req->self) |
251 | { |
410 | { |
252 | sv_unmagic (req->self, PERL_MAGIC_ext); |
411 | sv_unmagic (req->self, PERL_MAGIC_ext); |
253 | SvREFCNT_dec (req->self); |
412 | SvREFCNT_dec (req->self); |
254 | } |
413 | } |
255 | |
414 | |
256 | if (req->data) |
|
|
257 | SvREFCNT_dec (req->data); |
415 | SvREFCNT_dec (req->data); |
258 | |
|
|
259 | if (req->fh) |
|
|
260 | SvREFCNT_dec (req->fh); |
416 | SvREFCNT_dec (req->fh); |
261 | |
|
|
262 | if (req->fh2) |
|
|
263 | SvREFCNT_dec (req->fh2); |
417 | SvREFCNT_dec (req->fh2); |
264 | |
|
|
265 | if (req->statdata) |
|
|
266 | Safefree (req->statdata); |
|
|
267 | |
|
|
268 | if (req->callback) |
|
|
269 | SvREFCNT_dec (req->callback); |
418 | SvREFCNT_dec (req->callback); |
|
|
419 | Safefree (req->statdata); |
270 | |
420 | |
271 | if (req->type == REQ_READDIR && req->result >= 0) |
421 | if (req->type == REQ_READDIR && req->result >= 0) |
272 | free (req->data2ptr); |
422 | free (req->data2ptr); |
273 | |
423 | |
274 | Safefree (req); |
424 | Safefree (req); |
275 | } |
425 | } |
276 | |
426 | |
277 | static void req_cancel (aio_req req) |
427 | static void req_cancel (aio_req req) |
278 | { |
428 | { |
279 | req->cancelled = 1; |
429 | req->flags |= FLAG_CANCELLED; |
280 | |
430 | |
281 | if (req->type == REQ_GROUP) |
431 | if (req->type == REQ_GROUP) |
282 | { |
432 | { |
283 | aio_req sub; |
433 | aio_req sub; |
284 | |
434 | |
285 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
435 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
286 | req_cancel (sub); |
436 | req_cancel (sub); |
287 | } |
437 | } |
288 | } |
438 | } |
289 | |
439 | |
290 | static int poll_cb () |
440 | static int poll_cb () |
… | |
… | |
295 | aio_req req; |
445 | aio_req req; |
296 | |
446 | |
297 | for (;;) |
447 | for (;;) |
298 | { |
448 | { |
299 | pthread_mutex_lock (&reslock); |
449 | pthread_mutex_lock (&reslock); |
300 | req = ress; |
450 | req = reqq_shift (&res_queue); |
301 | |
451 | |
302 | if (req) |
452 | if (req) |
303 | { |
453 | { |
304 | ress = req->next; |
|
|
305 | |
|
|
306 | if (!ress) |
454 | if (!res_queue.size) |
307 | { |
455 | { |
308 | /* read any signals sent by the worker threads */ |
456 | /* read any signals sent by the worker threads */ |
309 | char buf [32]; |
457 | char buf [32]; |
310 | while (read (respipe [0], buf, 32) == 32) |
458 | while (read (respipe [0], buf, 32) == 32) |
311 | ; |
459 | ; |
312 | |
|
|
313 | rese = 0; |
|
|
314 | } |
460 | } |
315 | } |
461 | } |
316 | |
462 | |
317 | pthread_mutex_unlock (&reslock); |
463 | pthread_mutex_unlock (&reslock); |
318 | |
464 | |
319 | if (!req) |
465 | if (!req) |
320 | break; |
466 | break; |
321 | |
467 | |
322 | nreqs--; |
468 | --nreqs; |
323 | |
469 | |
324 | if (req->type == REQ_QUIT) |
470 | if (req->type == REQ_QUIT) |
325 | started--; |
471 | started--; |
326 | else if (req->type == REQ_GROUP && req->grp_next != req) |
472 | else if (req->type == REQ_GROUP && req->length) |
327 | { |
473 | { |
328 | req->fd = 1; /* mark request as delayed */ |
474 | req->fd = 1; /* mark request as delayed */ |
329 | continue; |
475 | continue; |
330 | } |
476 | } |
331 | else |
477 | else |
… | |
… | |
378 | static void req_send (aio_req req) |
524 | static void req_send (aio_req req) |
379 | { |
525 | { |
380 | while (started < wanted && nreqs >= started) |
526 | while (started < wanted && nreqs >= started) |
381 | start_thread (); |
527 | start_thread (); |
382 | |
528 | |
383 | nreqs++; |
529 | ++nreqs; |
384 | |
530 | |
385 | pthread_mutex_lock (&reqlock); |
531 | pthread_mutex_lock (&reqlock); |
386 | |
532 | reqq_push (&req_queue, req); |
387 | req->next = 0; |
|
|
388 | |
|
|
389 | if (reqe) |
|
|
390 | { |
|
|
391 | reqe->next = req; |
|
|
392 | reqe = req; |
|
|
393 | } |
|
|
394 | else |
|
|
395 | reqe = reqs = req; |
|
|
396 | |
|
|
397 | pthread_cond_signal (&reqwait); |
533 | pthread_cond_signal (&reqwait); |
398 | pthread_mutex_unlock (&reqlock); |
534 | pthread_mutex_unlock (&reqlock); |
399 | |
535 | |
400 | if (nreqs > max_outstanding) |
536 | if (nreqs > max_outstanding) |
401 | for (;;) |
537 | for (;;) |
… | |
… | |
410 | } |
546 | } |
411 | |
547 | |
412 | static void end_thread (void) |
548 | static void end_thread (void) |
413 | { |
549 | { |
414 | aio_req req; |
550 | aio_req req; |
|
|
551 | |
415 | Newz (0, req, 1, aio_cb); |
552 | Newz (0, req, 1, aio_cb); |
|
|
553 | |
416 | req->type = REQ_QUIT; |
554 | req->type = REQ_QUIT; |
|
|
555 | req->pri = PRI_MAX + PRI_BIAS; |
417 | |
556 | |
418 | req_send (req); |
557 | req_send (req); |
419 | } |
558 | } |
420 | |
559 | |
421 | static void min_parallel (int nthreads) |
560 | static void min_parallel (int nthreads) |
… | |
… | |
508 | #if !HAVE_READAHEAD |
647 | #if !HAVE_READAHEAD |
509 | # define readahead aio_readahead |
648 | # define readahead aio_readahead |
510 | |
649 | |
511 | static ssize_t readahead (int fd, off_t offset, size_t count) |
650 | static ssize_t readahead (int fd, off_t offset, size_t count) |
512 | { |
651 | { |
513 | char readahead_buf[4096]; |
652 | dBUF; |
514 | |
653 | |
515 | while (count > 0) |
654 | while (count > 0) |
516 | { |
655 | { |
517 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
656 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
518 | |
657 | |
519 | pread (fd, readahead_buf, len, offset); |
658 | pread (fd, aio_buf, len, offset); |
520 | offset += len; |
659 | offset += len; |
521 | count -= len; |
660 | count -= len; |
522 | } |
661 | } |
|
|
662 | |
|
|
663 | fBUF; |
523 | |
664 | |
524 | errno = 0; |
665 | errno = 0; |
525 | } |
666 | } |
526 | #endif |
667 | #endif |
527 | |
668 | |
… | |
… | |
613 | #endif |
754 | #endif |
614 | ) |
755 | ) |
615 | ) |
756 | ) |
616 | { |
757 | { |
617 | /* emulate sendfile. this is a major pain in the ass */ |
758 | /* emulate sendfile. this is a major pain in the ass */ |
618 | char buf[4096]; |
759 | dBUF; |
|
|
760 | |
619 | res = 0; |
761 | res = 0; |
620 | |
762 | |
621 | while (count) |
763 | while (count) |
622 | { |
764 | { |
623 | ssize_t cnt; |
765 | ssize_t cnt; |
624 | |
766 | |
625 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
767 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
626 | |
768 | |
627 | if (cnt <= 0) |
769 | if (cnt <= 0) |
628 | { |
770 | { |
629 | if (cnt && !res) res = -1; |
771 | if (cnt && !res) res = -1; |
630 | break; |
772 | break; |
631 | } |
773 | } |
632 | |
774 | |
633 | cnt = write (ofd, buf, cnt); |
775 | cnt = write (ofd, aio_buf, cnt); |
634 | |
776 | |
635 | if (cnt <= 0) |
777 | if (cnt <= 0) |
636 | { |
778 | { |
637 | if (cnt && !res) res = -1; |
779 | if (cnt && !res) res = -1; |
638 | break; |
780 | break; |
… | |
… | |
640 | |
782 | |
641 | offset += cnt; |
783 | offset += cnt; |
642 | res += cnt; |
784 | res += cnt; |
643 | count -= cnt; |
785 | count -= cnt; |
644 | } |
786 | } |
|
|
787 | |
|
|
788 | fBUF; |
645 | } |
789 | } |
646 | |
790 | |
647 | return res; |
791 | return res; |
648 | } |
792 | } |
649 | |
793 | |
650 | /* read a full directory */ |
794 | /* read a full directory */ |
651 | static int scandir_ (const char *path, void **namesp) |
795 | static int scandir_ (const char *path, void **namesp) |
652 | { |
796 | { |
653 | DIR *dirp = opendir (path); |
797 | DIR *dirp; |
654 | union |
798 | union |
655 | { |
799 | { |
656 | struct dirent d; |
800 | struct dirent d; |
657 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
801 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
658 | } u; |
802 | } *u; |
659 | struct dirent *entp; |
803 | struct dirent *entp; |
660 | char *name, *names; |
804 | char *name, *names; |
661 | int memlen = 4096; |
805 | int memlen = 4096; |
662 | int memofs = 0; |
806 | int memofs = 0; |
663 | int res = 0; |
807 | int res = 0; |
664 | int errorno; |
808 | int errorno; |
665 | |
809 | |
|
|
810 | dirp = opendir (path); |
666 | if (!dirp) |
811 | if (!dirp) |
667 | return -1; |
812 | return -1; |
668 | |
813 | |
|
|
814 | u = malloc (sizeof (*u)); |
669 | names = malloc (memlen); |
815 | names = malloc (memlen); |
670 | |
816 | |
|
|
817 | if (u && names) |
671 | for (;;) |
818 | for (;;) |
672 | { |
819 | { |
|
|
820 | errno = 0; |
673 | errno = 0, readdir_r (dirp, &u.d, &entp); |
821 | readdir_r (dirp, &u->d, &entp); |
674 | |
822 | |
675 | if (!entp) |
823 | if (!entp) |
676 | break; |
824 | break; |
677 | |
825 | |
678 | name = entp->d_name; |
826 | name = entp->d_name; |
679 | |
827 | |
680 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
828 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
681 | { |
829 | { |
682 | int len = strlen (name) + 1; |
830 | int len = strlen (name) + 1; |
683 | |
831 | |
684 | res++; |
832 | res++; |
685 | |
833 | |
686 | while (memofs + len > memlen) |
834 | while (memofs + len > memlen) |
687 | { |
835 | { |
688 | memlen *= 2; |
836 | memlen *= 2; |
689 | names = realloc (names, memlen); |
837 | names = realloc (names, memlen); |
690 | if (!names) |
838 | if (!names) |
691 | break; |
839 | break; |
692 | } |
840 | } |
693 | |
841 | |
694 | memcpy (names + memofs, name, len); |
842 | memcpy (names + memofs, name, len); |
695 | memofs += len; |
843 | memofs += len; |
696 | } |
844 | } |
697 | } |
845 | } |
698 | |
846 | |
699 | errorno = errno; |
847 | errorno = errno; |
|
|
848 | free (u); |
700 | closedir (dirp); |
849 | closedir (dirp); |
701 | |
850 | |
702 | if (errorno) |
851 | if (errorno) |
703 | { |
852 | { |
704 | free (names); |
853 | free (names); |
… | |
… | |
721 | { |
870 | { |
722 | pthread_mutex_lock (&reqlock); |
871 | pthread_mutex_lock (&reqlock); |
723 | |
872 | |
724 | for (;;) |
873 | for (;;) |
725 | { |
874 | { |
726 | req = reqs; |
875 | req = reqq_shift (&req_queue); |
727 | |
|
|
728 | if (reqs) |
|
|
729 | { |
|
|
730 | reqs = reqs->next; |
|
|
731 | if (!reqs) reqe = 0; |
|
|
732 | } |
|
|
733 | |
876 | |
734 | if (req) |
877 | if (req) |
735 | break; |
878 | break; |
736 | |
879 | |
737 | pthread_cond_wait (&reqwait, &reqlock); |
880 | pthread_cond_wait (&reqwait, &reqlock); |
738 | } |
881 | } |
739 | |
882 | |
740 | pthread_mutex_unlock (&reqlock); |
883 | pthread_mutex_unlock (&reqlock); |
741 | |
884 | |
742 | errno = 0; /* strictly unnecessary */ |
885 | errno = 0; /* strictly unnecessary */ |
|
|
886 | type = req->type; /* remember type for QUIT check */ |
743 | |
887 | |
744 | if (!req->cancelled) |
888 | if (!(req->flags & FLAG_CANCELLED)) |
745 | switch (req->type) |
889 | switch (type) |
746 | { |
890 | { |
747 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
891 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
748 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
892 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
749 | |
893 | |
750 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
894 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
… | |
… | |
764 | |
908 | |
765 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
909 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
766 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
910 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
767 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
911 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
768 | |
912 | |
769 | case REQ_SLEEP: |
913 | case REQ_BUSY: |
770 | { |
914 | { |
771 | struct timeval tv; |
915 | struct timeval tv; |
772 | |
916 | |
773 | tv.tv_sec = req->fd; |
917 | tv.tv_sec = req->fd; |
774 | tv.tv_usec = req->fd2; |
918 | tv.tv_usec = req->fd2; |
775 | |
919 | |
776 | req->result = select (0, 0, 0, 0, &tv); |
920 | req->result = select (0, 0, 0, 0, &tv); |
777 | } |
921 | } |
778 | |
922 | |
|
|
923 | case REQ_GROUP: |
|
|
924 | case REQ_NOP: |
779 | case REQ_QUIT: |
925 | case REQ_QUIT: |
780 | break; |
926 | break; |
781 | |
927 | |
782 | default: |
928 | default: |
783 | req->result = ENOSYS; |
929 | req->result = ENOSYS; |
… | |
… | |
786 | |
932 | |
787 | req->errorno = errno; |
933 | req->errorno = errno; |
788 | |
934 | |
789 | pthread_mutex_lock (&reslock); |
935 | pthread_mutex_lock (&reslock); |
790 | |
936 | |
791 | req->next = 0; |
937 | if (!reqq_push (&res_queue, req)) |
792 | |
|
|
793 | if (rese) |
|
|
794 | { |
|
|
795 | rese->next = req; |
|
|
796 | rese = req; |
|
|
797 | } |
|
|
798 | else |
|
|
799 | { |
|
|
800 | rese = ress = req; |
|
|
801 | |
|
|
802 | /* write a dummy byte to the pipe so fh becomes ready */ |
938 | /* write a dummy byte to the pipe so fh becomes ready */ |
803 | write (respipe [1], &respipe, 1); |
939 | write (respipe [1], &respipe, 1); |
804 | } |
|
|
805 | |
940 | |
806 | pthread_mutex_unlock (&reslock); |
941 | pthread_mutex_unlock (&reslock); |
807 | } |
942 | } |
808 | while (type != REQ_QUIT); |
943 | while (type != REQ_QUIT); |
809 | |
944 | |
… | |
… | |
840 | { |
975 | { |
841 | aio_req prv; |
976 | aio_req prv; |
842 | |
977 | |
843 | started = 0; |
978 | started = 0; |
844 | |
979 | |
845 | while (reqs) |
980 | while (prv = reqq_shift (&req_queue)) |
846 | { |
|
|
847 | prv = reqs; |
|
|
848 | reqs = prv->next; |
|
|
849 | req_free (prv); |
981 | req_free (prv); |
850 | } |
|
|
851 | |
982 | |
852 | reqs = reqe = 0; |
983 | while (prv = reqq_shift (&res_queue)) |
853 | |
|
|
854 | while (ress) |
|
|
855 | { |
|
|
856 | prv = ress; |
|
|
857 | ress = prv->next; |
|
|
858 | req_free (prv); |
984 | req_free (prv); |
859 | } |
985 | |
860 | |
|
|
861 | ress = rese = 0; |
|
|
862 | |
|
|
863 | close (respipe [0]); |
986 | close (respipe [0]); |
864 | close (respipe [1]); |
987 | close (respipe [1]); |
865 | create_pipe (); |
988 | create_pipe (); |
866 | |
989 | |
867 | atfork_parent (); |
990 | atfork_parent (); |
868 | } |
991 | } |
869 | |
992 | |
870 | #define dREQ \ |
993 | #define dREQ \ |
871 | aio_req req; \ |
994 | aio_req req; \ |
|
|
995 | int req_pri = next_pri; \ |
|
|
996 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
872 | \ |
997 | \ |
873 | if (SvOK (callback) && !SvROK (callback)) \ |
998 | if (SvOK (callback) && !SvROK (callback)) \ |
874 | croak ("callback must be undef or of reference type"); \ |
999 | croak ("callback must be undef or of reference type"); \ |
875 | \ |
1000 | \ |
876 | Newz (0, req, 1, aio_cb); \ |
1001 | Newz (0, req, 1, aio_cb); \ |
877 | if (!req) \ |
1002 | if (!req) \ |
878 | croak ("out of memory during aio_req allocation"); \ |
1003 | croak ("out of memory during aio_req allocation"); \ |
879 | \ |
1004 | \ |
880 | req->callback = newSVsv (callback) |
1005 | req->callback = newSVsv (callback); \ |
|
|
1006 | req->pri = req_pri |
881 | |
1007 | |
882 | #define REQ_SEND \ |
1008 | #define REQ_SEND \ |
883 | req_send (req); \ |
1009 | req_send (req); \ |
884 | \ |
1010 | \ |
885 | if (GIMME_V != G_VOID) \ |
1011 | if (GIMME_V != G_VOID) \ |
… | |
… | |
1139 | |
1265 | |
1140 | REQ_SEND; |
1266 | REQ_SEND; |
1141 | } |
1267 | } |
1142 | |
1268 | |
1143 | void |
1269 | void |
1144 | aio_sleep (delay,callback=&PL_sv_undef) |
1270 | aio_busy (delay,callback=&PL_sv_undef) |
1145 | double delay |
1271 | double delay |
1146 | SV * callback |
1272 | SV * callback |
1147 | PPCODE: |
1273 | PPCODE: |
1148 | { |
1274 | { |
1149 | dREQ; |
1275 | dREQ; |
1150 | |
1276 | |
1151 | req->type = REQ_SLEEP; |
1277 | req->type = REQ_BUSY; |
1152 | req->fd = delay < 0. ? 0 : delay; |
1278 | req->fd = delay < 0. ? 0 : delay; |
1153 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1279 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
1154 | |
1280 | |
1155 | REQ_SEND; |
1281 | REQ_SEND; |
1156 | } |
1282 | } |
… | |
… | |
1160 | SV * callback |
1286 | SV * callback |
1161 | PROTOTYPE: ;$ |
1287 | PROTOTYPE: ;$ |
1162 | PPCODE: |
1288 | PPCODE: |
1163 | { |
1289 | { |
1164 | dREQ; |
1290 | dREQ; |
|
|
1291 | |
1165 | req->type = REQ_GROUP; |
1292 | req->type = REQ_GROUP; |
1166 | req->grp_next = req; |
|
|
1167 | req->grp_prev = req; |
|
|
1168 | |
|
|
1169 | req_send (req); |
1293 | req_send (req); |
|
|
1294 | |
1170 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1295 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
1171 | } |
1296 | } |
|
|
1297 | |
|
|
1298 | void |
|
|
1299 | aio_nop (callback=&PL_sv_undef) |
|
|
1300 | SV * callback |
|
|
1301 | PPCODE: |
|
|
1302 | { |
|
|
1303 | dREQ; |
|
|
1304 | |
|
|
1305 | req->type = REQ_NOP; |
|
|
1306 | |
|
|
1307 | REQ_SEND; |
|
|
1308 | } |
|
|
1309 | |
|
|
1310 | void |
|
|
1311 | aioreq_pri (int pri = DEFAULT_PRI) |
|
|
1312 | CODE: |
|
|
1313 | if (pri < PRI_MIN) pri = PRI_MIN; |
|
|
1314 | if (pri > PRI_MAX) pri = PRI_MAX; |
|
|
1315 | next_pri = pri + PRI_BIAS; |
|
|
1316 | |
|
|
1317 | void |
|
|
1318 | aioreq_nice (int nice = 0) |
|
|
1319 | CODE: |
|
|
1320 | nice = next_pri - nice; |
|
|
1321 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1322 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1323 | next_pri = nice + PRI_BIAS; |
1172 | |
1324 | |
1173 | void |
1325 | void |
1174 | flush () |
1326 | flush () |
1175 | PROTOTYPE: |
1327 | PROTOTYPE: |
1176 | CODE: |
1328 | CODE: |
… | |
… | |
1225 | |
1377 | |
1226 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1378 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1227 | |
1379 | |
1228 | void |
1380 | void |
1229 | cancel (aio_req_ornot req) |
1381 | cancel (aio_req_ornot req) |
1230 | PROTOTYPE: |
|
|
1231 | CODE: |
1382 | CODE: |
1232 | req_cancel (req); |
1383 | req_cancel (req); |
1233 | |
1384 | |
|
|
1385 | void |
|
|
1386 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1387 | CODE: |
|
|
1388 | SvREFCNT_dec (req->callback); |
|
|
1389 | req->callback = newSVsv (callback); |
|
|
1390 | |
1234 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1391 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
1235 | |
1392 | |
1236 | void |
1393 | void |
1237 | add (aio_req grp, ...) |
1394 | add (aio_req grp, ...) |
1238 | PPCODE: |
1395 | PPCODE: |
1239 | { |
1396 | { |
1240 | int i; |
1397 | int i; |
|
|
1398 | aio_req req; |
|
|
1399 | |
|
|
1400 | if (grp->fd == 2) |
|
|
1401 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
1241 | |
1402 | |
1242 | for (i = 1; i < items; ++i ) |
1403 | for (i = 1; i < items; ++i ) |
1243 | { |
1404 | { |
1244 | if (GIMME_V != G_VOID) |
1405 | if (GIMME_V != G_VOID) |
1245 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1406 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
1246 | |
1407 | |
1247 | aio_req req = SvAIO_REQ (ST (i)); |
1408 | req = SvAIO_REQ (ST (i)); |
1248 | |
1409 | |
1249 | if (req) |
1410 | if (req) |
1250 | { |
1411 | { |
1251 | req->grp_prev = grp; |
1412 | ++grp->length; |
1252 | req->grp_next = grp->grp_next; |
|
|
1253 | grp->grp_next->grp_prev = req; |
|
|
1254 | grp->grp_next = req; |
|
|
1255 | |
|
|
1256 | req->grp = grp; |
1413 | req->grp = grp; |
|
|
1414 | |
|
|
1415 | req->grp_prev = 0; |
|
|
1416 | req->grp_next = grp->grp_first; |
|
|
1417 | |
|
|
1418 | if (grp->grp_first) |
|
|
1419 | grp->grp_first->grp_prev = req; |
|
|
1420 | |
|
|
1421 | grp->grp_first = req; |
1257 | } |
1422 | } |
1258 | } |
1423 | } |
1259 | } |
1424 | } |
1260 | |
1425 | |
1261 | void |
1426 | void |
1262 | result (aio_req grp, ...) |
1427 | result (aio_req grp, ...) |
|
|
1428 | CODE: |
|
|
1429 | { |
|
|
1430 | int i; |
|
|
1431 | AV *av = newAV (); |
|
|
1432 | |
|
|
1433 | for (i = 1; i < items; ++i ) |
|
|
1434 | av_push (av, newSVsv (ST (i))); |
|
|
1435 | |
|
|
1436 | SvREFCNT_dec (grp->data); |
|
|
1437 | grp->data = (SV *)av; |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | void |
|
|
1441 | limit (aio_req grp, int limit) |
1263 | CODE: |
1442 | CODE: |
1264 | { |
1443 | grp->fd2 = limit; |
1265 | int i; |
1444 | aio_grp_feed (grp); |
1266 | AV *av = newAV (); |
|
|
1267 | |
1445 | |
1268 | if (grp->data) |
1446 | void |
|
|
1447 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1448 | CODE: |
|
|
1449 | { |
1269 | SvREFCNT_dec (grp->data); |
1450 | SvREFCNT_dec (grp->fh2); |
|
|
1451 | grp->fh2 = newSVsv (callback); |
1270 | |
1452 | |
1271 | for (i = 1; i < items; ++i ) |
1453 | if (grp->fd2 <= 0) |
1272 | av_push (av, newSVsv (ST (i))); |
1454 | grp->fd2 = 2; |
1273 | |
1455 | |
1274 | grp->data = (SV *)av; |
1456 | aio_grp_feed (grp); |
1275 | } |
1457 | } |
1276 | |
1458 | |