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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 | |
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5 | #define _REENTRANT 1 |
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6 | |
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7 | #include <errno.h> |
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8 | |
1 | #include "EXTERN.h" |
9 | #include "EXTERN.h" |
2 | #include "perl.h" |
10 | #include "perl.h" |
3 | #include "XSUB.h" |
11 | #include "XSUB.h" |
4 | |
12 | |
5 | #define _XOPEN_SOURCE 500 |
13 | #include "autoconf/config.h" |
6 | |
14 | |
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15 | #include <pthread.h> |
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16 | |
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17 | #include <stddef.h> |
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18 | #include <errno.h> |
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19 | #include <sys/time.h> |
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20 | #include <sys/select.h> |
7 | #include <sys/types.h> |
21 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
22 | #include <sys/stat.h> |
9 | |
23 | #include <limits.h> |
10 | #include <unistd.h> |
24 | #include <unistd.h> |
11 | #include <fcntl.h> |
25 | #include <fcntl.h> |
12 | #include <signal.h> |
26 | #include <signal.h> |
13 | #include <sched.h> |
27 | #include <sched.h> |
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28 | |
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29 | #if HAVE_SENDFILE |
14 | #if __linux |
30 | # if __linux |
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31 | # include <sys/sendfile.h> |
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32 | # elif __freebsd |
15 | #include <sys/syscall.h> |
33 | # include <sys/socket.h> |
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34 | # include <sys/uio.h> |
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35 | # elif __hpux |
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36 | # include <sys/socket.h> |
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37 | # elif __solaris /* not yet */ |
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38 | # include <sys/sendfile.h> |
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39 | # else |
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40 | # error sendfile support requested but not available |
16 | #endif |
41 | # endif |
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42 | #endif |
17 | |
43 | |
18 | #include <pthread.h> |
44 | /* used for struct dirent, AIX doesn't provide it */ |
19 | |
45 | #ifndef NAME_MAX |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
46 | # define NAME_MAX 4096 |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
47 | #endif |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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23 | |
48 | |
24 | #if __ia64 |
49 | #if __ia64 |
25 | # 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 |
26 | #else |
53 | #else |
27 | # define STACKSIZE 4096 |
54 | # define STACKSIZE 16384 |
28 | #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) |
29 | |
66 | |
30 | enum { |
67 | enum { |
31 | REQ_QUIT, |
68 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
69 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
70 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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71 | REQ_SENDFILE, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
72 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
73 | REQ_FSYNC, REQ_FDATASYNC, |
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74 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
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75 | REQ_READDIR, |
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76 | REQ_LINK, REQ_SYMLINK, |
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77 | REQ_GROUP, REQ_NOP, |
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78 | REQ_SLEEP, |
36 | }; |
79 | }; |
37 | |
80 | |
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81 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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82 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
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83 | |
38 | typedef struct aio_cb { |
84 | typedef struct aio_cb |
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85 | { |
39 | struct aio_cb *volatile next; |
86 | struct aio_cb *volatile next; |
40 | |
87 | |
41 | int type; |
88 | SV *data, *callback; |
42 | |
89 | SV *fh, *fh2; |
43 | int fd; |
90 | void *dataptr, *data2ptr; |
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91 | Stat_t *statdata; |
44 | off_t offset; |
92 | off_t offset; |
45 | size_t length; |
93 | size_t length; |
46 | ssize_t result; |
94 | ssize_t result; |
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95 | |
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96 | STRLEN dataoffset; |
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97 | int type; |
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98 | int fd, fd2; |
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99 | int errorno; |
47 | mode_t mode; /* open */ |
100 | mode_t mode; /* open */ |
48 | int errorno; |
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49 | SV *data, *callback; |
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50 | void *dataptr; |
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51 | STRLEN dataoffset; |
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52 | |
101 | |
53 | Stat_t *statdata; |
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; |
54 | } aio_cb; |
107 | } aio_cb; |
55 | |
108 | |
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109 | enum { |
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110 | FLAG_CANCELLED = 0x01, |
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111 | }; |
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112 | |
56 | typedef aio_cb *aio_req; |
113 | typedef aio_cb *aio_req; |
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114 | typedef aio_cb *aio_req_ornot; |
57 | |
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 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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123 | }; |
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124 | |
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125 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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126 | |
58 | static int started; |
127 | static int started, wanted; |
59 | static int nreqs; |
128 | static volatile int nreqs; |
60 | static int max_outstanding = 1<<30; |
129 | static int max_outstanding = 1<<30; |
61 | static int respipe [2]; |
130 | static int respipe [2]; |
62 | |
131 | |
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132 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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133 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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134 | #else |
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135 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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136 | #endif |
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137 | |
63 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
138 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
64 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
139 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
65 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
140 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
66 | |
141 | |
67 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
142 | /* |
68 | static volatile aio_req ress, rese; /* queue start, queue end */ |
143 | * a somewhat faster data structure might be nice, but |
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144 | * with 8 priorities this actually needs <20 insns |
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145 | * per shift, the most expensive operation. |
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146 | */ |
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147 | typedef struct { |
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148 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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149 | int size; |
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150 | } reqq; |
69 | |
151 | |
70 | static void |
152 | static reqq req_queue; |
71 | poll_wait () |
153 | static reqq res_queue; |
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154 | |
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155 | int reqq_push (reqq *q, aio_req req) |
72 | { |
156 | { |
73 | if (!nreqs) |
157 | int pri = req->pri; |
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158 | req->next = 0; |
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159 | |
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160 | if (q->qe[pri]) |
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161 | { |
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162 | q->qe[pri]->next = req; |
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163 | q->qe[pri] = req; |
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164 | } |
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165 | else |
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166 | q->qe[pri] = q->qs[pri] = req; |
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167 | |
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168 | return q->size++; |
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169 | } |
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170 | |
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171 | aio_req reqq_shift (reqq *q) |
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172 | { |
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173 | int pri; |
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174 | |
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175 | if (!q->size) |
74 | return; |
176 | return 0; |
75 | |
177 | |
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178 | --q->size; |
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179 | |
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180 | for (pri = NUM_PRI; pri--; ) |
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181 | { |
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182 | aio_req req = q->qs[pri]; |
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183 | |
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184 | if (req) |
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185 | { |
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186 | if (!(q->qs[pri] = req->next)) |
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187 | q->qe[pri] = 0; |
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188 | |
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189 | return req; |
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190 | } |
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191 | } |
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192 | |
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193 | abort (); |
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194 | } |
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195 | |
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196 | static void req_invoke (aio_req req); |
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197 | static void req_free (aio_req req); |
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198 | |
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199 | /* must be called at most once */ |
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200 | static SV *req_sv (aio_req req, const char *klass) |
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201 | { |
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202 | if (!req->self) |
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203 | { |
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204 | req->self = (SV *)newHV (); |
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205 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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206 | } |
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207 | |
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208 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
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209 | } |
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210 | |
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211 | static aio_req SvAIO_REQ (SV *sv) |
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212 | { |
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213 | MAGIC *mg; |
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214 | |
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215 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
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216 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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217 | |
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218 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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219 | |
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220 | return mg ? (aio_req)mg->mg_ptr : 0; |
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221 | } |
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222 | |
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223 | static void aio_grp_feed (aio_req grp) |
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224 | { |
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225 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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226 | { |
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227 | int old_len = grp->length; |
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228 | |
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229 | if (grp->fh2 && SvOK (grp->fh2)) |
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230 | { |
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231 | dSP; |
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232 | |
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233 | ENTER; |
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234 | SAVETMPS; |
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235 | PUSHMARK (SP); |
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236 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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237 | PUTBACK; |
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238 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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239 | SPAGAIN; |
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240 | FREETMPS; |
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241 | LEAVE; |
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242 | } |
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243 | |
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244 | /* stop if no progress has been made */ |
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245 | if (old_len == grp->length) |
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246 | { |
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247 | SvREFCNT_dec (grp->fh2); |
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248 | grp->fh2 = 0; |
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249 | break; |
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250 | } |
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251 | } |
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252 | } |
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253 | |
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254 | static void aio_grp_dec (aio_req grp) |
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255 | { |
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256 | --grp->length; |
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257 | |
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258 | /* call feeder, if applicable */ |
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259 | aio_grp_feed (grp); |
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260 | |
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261 | /* finish, if done */ |
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262 | if (!grp->length && grp->fd) |
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263 | { |
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264 | req_invoke (grp); |
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265 | req_free (grp); |
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266 | } |
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267 | } |
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268 | |
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269 | static void poll_wait () |
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270 | { |
76 | fd_set rfd; |
271 | fd_set rfd; |
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272 | |
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273 | while (nreqs) |
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274 | { |
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275 | int size; |
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276 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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277 | pthread_mutex_lock (&reslock); |
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278 | #endif |
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279 | size = res_queue.size; |
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280 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
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281 | pthread_mutex_unlock (&reslock); |
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282 | #endif |
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283 | |
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284 | if (size) |
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285 | return; |
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286 | |
77 | FD_ZERO(&rfd); |
287 | FD_ZERO(&rfd); |
78 | FD_SET(respipe [0], &rfd); |
288 | FD_SET(respipe [0], &rfd); |
79 | |
289 | |
80 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
290 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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291 | } |
81 | } |
292 | } |
82 | |
293 | |
83 | static int |
294 | static void req_invoke (aio_req req) |
84 | poll_cb () |
295 | { |
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296 | dSP; |
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297 | |
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298 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
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299 | { |
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300 | errno = req->errorno; |
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301 | |
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302 | ENTER; |
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303 | SAVETMPS; |
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304 | PUSHMARK (SP); |
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305 | EXTEND (SP, 1); |
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306 | |
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307 | switch (req->type) |
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308 | { |
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309 | case REQ_READDIR: |
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310 | { |
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311 | SV *rv = &PL_sv_undef; |
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312 | |
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313 | if (req->result >= 0) |
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314 | { |
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315 | char *buf = req->data2ptr; |
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316 | AV *av = newAV (); |
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317 | |
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318 | while (req->result) |
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319 | { |
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320 | SV *sv = newSVpv (buf, 0); |
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321 | |
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322 | av_push (av, sv); |
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323 | buf += SvCUR (sv) + 1; |
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324 | req->result--; |
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325 | } |
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326 | |
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327 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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328 | } |
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329 | |
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330 | PUSHs (rv); |
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331 | } |
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332 | break; |
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333 | |
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334 | case REQ_OPEN: |
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335 | { |
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336 | /* convert fd to fh */ |
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337 | SV *fh; |
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338 | |
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339 | PUSHs (sv_2mortal (newSViv (req->result))); |
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340 | PUTBACK; |
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341 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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342 | SPAGAIN; |
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343 | |
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344 | fh = SvREFCNT_inc (POPs); |
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345 | |
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346 | PUSHMARK (SP); |
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347 | XPUSHs (sv_2mortal (fh)); |
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348 | } |
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349 | break; |
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350 | |
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351 | case REQ_GROUP: |
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352 | req->fd = 2; /* mark group as finished */ |
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353 | |
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354 | if (req->data) |
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355 | { |
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356 | int i; |
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357 | AV *av = (AV *)req->data; |
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358 | |
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359 | EXTEND (SP, AvFILL (av) + 1); |
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360 | for (i = 0; i <= AvFILL (av); ++i) |
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361 | PUSHs (*av_fetch (av, i, 0)); |
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362 | } |
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363 | break; |
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364 | |
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365 | case REQ_NOP: |
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366 | case REQ_SLEEP: |
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367 | break; |
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368 | |
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369 | default: |
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370 | PUSHs (sv_2mortal (newSViv (req->result))); |
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371 | break; |
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372 | } |
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373 | |
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374 | |
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375 | PUTBACK; |
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376 | call_sv (req->callback, G_VOID | G_EVAL); |
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377 | SPAGAIN; |
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378 | |
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379 | FREETMPS; |
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380 | LEAVE; |
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381 | } |
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382 | |
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383 | if (req->grp) |
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384 | { |
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385 | aio_req grp = req->grp; |
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386 | |
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387 | /* unlink request */ |
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388 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
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389 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
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390 | |
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391 | if (grp->grp_first == req) |
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392 | grp->grp_first = req->grp_next; |
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393 | |
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394 | aio_grp_dec (grp); |
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395 | } |
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396 | |
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397 | if (SvTRUE (ERRSV)) |
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398 | { |
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399 | req_free (req); |
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400 | croak (0); |
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401 | } |
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402 | } |
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403 | |
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404 | static void req_free (aio_req req) |
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405 | { |
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406 | if (req->self) |
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407 | { |
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408 | sv_unmagic (req->self, PERL_MAGIC_ext); |
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409 | SvREFCNT_dec (req->self); |
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410 | } |
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411 | |
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412 | SvREFCNT_dec (req->data); |
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413 | SvREFCNT_dec (req->fh); |
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414 | SvREFCNT_dec (req->fh2); |
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415 | SvREFCNT_dec (req->callback); |
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416 | Safefree (req->statdata); |
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417 | |
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418 | if (req->type == REQ_READDIR && req->result >= 0) |
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419 | free (req->data2ptr); |
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420 | |
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421 | Safefree (req); |
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422 | } |
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423 | |
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424 | static void req_cancel (aio_req req) |
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425 | { |
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426 | req->flags |= FLAG_CANCELLED; |
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427 | |
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428 | if (req->type == REQ_GROUP) |
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429 | { |
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430 | aio_req sub; |
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431 | |
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432 | for (sub = req->grp_first; sub; sub = sub->grp_next) |
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433 | req_cancel (sub); |
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434 | } |
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435 | } |
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436 | |
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437 | static int poll_cb () |
85 | { |
438 | { |
86 | dSP; |
439 | dSP; |
87 | int count = 0; |
440 | int count = 0; |
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441 | int do_croak = 0; |
88 | aio_req req; |
442 | aio_req req; |
89 | |
|
|
90 | { |
|
|
91 | /* read and signals sent by the worker threads */ |
|
|
92 | char buf [32]; |
|
|
93 | while (read (respipe [0], buf, 32) > 0) |
|
|
94 | ; |
|
|
95 | } |
|
|
96 | |
443 | |
97 | for (;;) |
444 | for (;;) |
98 | { |
445 | { |
99 | pthread_mutex_lock (&reslock); |
446 | pthread_mutex_lock (&reslock); |
|
|
447 | req = reqq_shift (&res_queue); |
100 | |
448 | |
101 | req = ress; |
|
|
102 | |
|
|
103 | if (ress) |
449 | if (req) |
104 | { |
450 | { |
105 | ress = ress->next; |
451 | if (!res_queue.size) |
106 | if (!ress) rese = 0; |
452 | { |
|
|
453 | /* read any signals sent by the worker threads */ |
|
|
454 | char buf [32]; |
|
|
455 | while (read (respipe [0], buf, 32) == 32) |
|
|
456 | ; |
|
|
457 | } |
107 | } |
458 | } |
108 | |
459 | |
109 | pthread_mutex_unlock (&reslock); |
460 | pthread_mutex_unlock (&reslock); |
110 | |
461 | |
111 | if (!req) |
462 | if (!req) |
112 | break; |
463 | break; |
113 | |
464 | |
114 | nreqs--; |
465 | --nreqs; |
115 | |
466 | |
116 | if (req->type == REQ_QUIT) |
467 | if (req->type == REQ_QUIT) |
117 | started--; |
468 | started--; |
|
|
469 | else if (req->type == REQ_GROUP && req->length) |
|
|
470 | { |
|
|
471 | req->fd = 1; /* mark request as delayed */ |
|
|
472 | continue; |
|
|
473 | } |
118 | else |
474 | else |
119 | { |
475 | { |
120 | int errorno = errno; |
|
|
121 | errno = req->errorno; |
|
|
122 | |
|
|
123 | if (req->type == REQ_READ) |
476 | if (req->type == REQ_READ) |
124 | SvCUR_set (req->data, req->dataoffset |
477 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
125 | + req->result > 0 ? req->result : 0); |
|
|
126 | |
478 | |
|
|
479 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
|
|
480 | SvREADONLY_off (req->data); |
|
|
481 | |
127 | if (req->data) |
482 | if (req->statdata) |
128 | SvREFCNT_dec (req->data); |
|
|
129 | |
|
|
130 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
|
|
131 | { |
483 | { |
132 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
484 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
133 | PL_laststatval = req->result; |
485 | PL_laststatval = req->result; |
134 | PL_statcache = *(req->statdata); |
486 | PL_statcache = *(req->statdata); |
135 | |
|
|
136 | Safefree (req->statdata); |
|
|
137 | } |
487 | } |
138 | |
488 | |
139 | PUSHMARK (SP); |
489 | req_invoke (req); |
140 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
141 | |
490 | |
142 | if (req->type == REQ_OPEN) |
|
|
143 | { |
|
|
144 | /* convert fd to fh */ |
|
|
145 | SV *fh; |
|
|
146 | |
|
|
147 | PUTBACK; |
|
|
148 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
149 | SPAGAIN; |
|
|
150 | |
|
|
151 | fh = POPs; |
|
|
152 | |
|
|
153 | PUSHMARK (SP); |
|
|
154 | XPUSHs (fh); |
|
|
155 | } |
|
|
156 | |
|
|
157 | if (SvOK (req->callback)) |
|
|
158 | { |
|
|
159 | PUTBACK; |
|
|
160 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
161 | SPAGAIN; |
|
|
162 | } |
|
|
163 | |
|
|
164 | if (req->callback) |
|
|
165 | SvREFCNT_dec (req->callback); |
|
|
166 | |
|
|
167 | errno = errorno; |
|
|
168 | count++; |
491 | count++; |
169 | } |
492 | } |
170 | |
493 | |
171 | Safefree (req); |
494 | req_free (req); |
172 | } |
495 | } |
173 | |
496 | |
174 | return count; |
497 | return count; |
175 | } |
498 | } |
176 | |
499 | |
177 | static void *aio_proc(void *arg); |
500 | static void *aio_proc(void *arg); |
178 | |
501 | |
179 | static void |
|
|
180 | start_thread (void) |
502 | static void start_thread (void) |
181 | { |
503 | { |
182 | sigset_t fullsigset, oldsigset; |
504 | sigset_t fullsigset, oldsigset; |
183 | pthread_t tid; |
505 | pthread_t tid; |
184 | pthread_attr_t attr; |
506 | pthread_attr_t attr; |
185 | |
507 | |
… | |
… | |
194 | started++; |
516 | started++; |
195 | |
517 | |
196 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
518 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
197 | } |
519 | } |
198 | |
520 | |
199 | static void |
521 | static void req_send (aio_req req) |
200 | send_req (aio_req req) |
|
|
201 | { |
522 | { |
|
|
523 | while (started < wanted && nreqs >= started) |
|
|
524 | start_thread (); |
|
|
525 | |
202 | nreqs++; |
526 | ++nreqs; |
203 | |
527 | |
204 | pthread_mutex_lock (&reqlock); |
528 | pthread_mutex_lock (&reqlock); |
205 | |
529 | reqq_push (&req_queue, req); |
206 | req->next = 0; |
|
|
207 | |
|
|
208 | if (reqe) |
|
|
209 | { |
|
|
210 | reqe->next = req; |
|
|
211 | reqe = req; |
|
|
212 | } |
|
|
213 | else |
|
|
214 | reqe = reqs = req; |
|
|
215 | |
|
|
216 | pthread_cond_signal (&reqwait); |
530 | pthread_cond_signal (&reqwait); |
217 | pthread_mutex_unlock (&reqlock); |
531 | pthread_mutex_unlock (&reqlock); |
218 | |
532 | |
219 | while (nreqs > max_outstanding) |
533 | if (nreqs > max_outstanding) |
|
|
534 | for (;;) |
|
|
535 | { |
|
|
536 | poll_cb (); |
|
|
537 | |
|
|
538 | if (nreqs <= max_outstanding) |
|
|
539 | break; |
|
|
540 | |
|
|
541 | poll_wait (); |
|
|
542 | } |
|
|
543 | } |
|
|
544 | |
|
|
545 | static void end_thread (void) |
|
|
546 | { |
|
|
547 | aio_req req; |
|
|
548 | |
|
|
549 | Newz (0, req, 1, aio_cb); |
|
|
550 | |
|
|
551 | req->type = REQ_QUIT; |
|
|
552 | req->pri = PRI_MAX + PRI_BIAS; |
|
|
553 | |
|
|
554 | req_send (req); |
|
|
555 | } |
|
|
556 | |
|
|
557 | static void min_parallel (int nthreads) |
|
|
558 | { |
|
|
559 | if (wanted < nthreads) |
|
|
560 | wanted = nthreads; |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void max_parallel (int nthreads) |
|
|
564 | { |
|
|
565 | int cur = started; |
|
|
566 | |
|
|
567 | if (wanted > nthreads) |
|
|
568 | wanted = nthreads; |
|
|
569 | |
|
|
570 | while (cur > wanted) |
|
|
571 | { |
|
|
572 | end_thread (); |
|
|
573 | cur--; |
|
|
574 | } |
|
|
575 | |
|
|
576 | while (started > wanted) |
220 | { |
577 | { |
221 | poll_wait (); |
578 | poll_wait (); |
222 | poll_cb (); |
579 | poll_cb (); |
223 | } |
580 | } |
224 | } |
581 | } |
225 | |
582 | |
226 | static void |
583 | static void create_pipe () |
227 | end_thread (void) |
|
|
228 | { |
584 | { |
229 | aio_req req; |
585 | if (pipe (respipe)) |
230 | New (0, req, 1, aio_cb); |
586 | croak ("unable to initialize result pipe"); |
231 | req->type = REQ_QUIT; |
|
|
232 | |
587 | |
233 | send_req (req); |
588 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
234 | } |
589 | croak ("cannot set result pipe to nonblocking mode"); |
235 | |
590 | |
236 | static void |
591 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
237 | read_write (int dowrite, int fd, off_t offset, size_t length, |
592 | croak ("cannot set result pipe to nonblocking mode"); |
238 | SV *data, STRLEN dataoffset, SV *callback) |
593 | } |
239 | { |
|
|
240 | aio_req req; |
|
|
241 | STRLEN svlen; |
|
|
242 | char *svptr = SvPV (data, svlen); |
|
|
243 | |
594 | |
244 | SvUPGRADE (data, SVt_PV); |
595 | /*****************************************************************************/ |
245 | SvPOK_on (data); |
596 | /* work around various missing functions */ |
246 | |
597 | |
247 | if (dataoffset < 0) |
598 | #if !HAVE_PREADWRITE |
|
|
599 | # define pread aio_pread |
|
|
600 | # define pwrite aio_pwrite |
|
|
601 | |
|
|
602 | /* |
|
|
603 | * make our pread/pwrite safe against themselves, but not against |
|
|
604 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
605 | * but that's your problem, not mine. |
|
|
606 | */ |
|
|
607 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
|
|
608 | |
|
|
609 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
|
|
610 | { |
|
|
611 | ssize_t res; |
|
|
612 | off_t ooffset; |
|
|
613 | |
|
|
614 | pthread_mutex_lock (&preadwritelock); |
|
|
615 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
616 | lseek (fd, offset, SEEK_SET); |
|
|
617 | res = read (fd, buf, count); |
|
|
618 | lseek (fd, ooffset, SEEK_SET); |
|
|
619 | pthread_mutex_unlock (&preadwritelock); |
|
|
620 | |
|
|
621 | return res; |
|
|
622 | } |
|
|
623 | |
|
|
624 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
625 | { |
|
|
626 | ssize_t res; |
|
|
627 | off_t ooffset; |
|
|
628 | |
|
|
629 | pthread_mutex_lock (&preadwritelock); |
|
|
630 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
631 | lseek (fd, offset, SEEK_SET); |
|
|
632 | res = write (fd, buf, count); |
|
|
633 | lseek (fd, offset, SEEK_SET); |
|
|
634 | pthread_mutex_unlock (&preadwritelock); |
|
|
635 | |
|
|
636 | return res; |
|
|
637 | } |
|
|
638 | #endif |
|
|
639 | |
|
|
640 | #if !HAVE_FDATASYNC |
|
|
641 | # define fdatasync fsync |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | #if !HAVE_READAHEAD |
|
|
645 | # define readahead aio_readahead |
|
|
646 | |
|
|
647 | static ssize_t readahead (int fd, off_t offset, size_t count) |
|
|
648 | { |
|
|
649 | dBUF; |
|
|
650 | |
|
|
651 | while (count > 0) |
|
|
652 | { |
|
|
653 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
|
|
654 | |
|
|
655 | pread (fd, aio_buf, len, offset); |
248 | dataoffset += svlen; |
656 | offset += len; |
249 | |
657 | count -= len; |
250 | if (dataoffset < 0 || dataoffset > svlen) |
|
|
251 | croak ("data offset outside of string"); |
|
|
252 | |
|
|
253 | if (dowrite) |
|
|
254 | { |
658 | } |
255 | /* write: check length and adjust. */ |
659 | |
256 | if (length < 0 || length + dataoffset > svlen) |
660 | fBUF; |
257 | length = svlen - dataoffset; |
661 | |
|
|
662 | errno = 0; |
|
|
663 | } |
|
|
664 | #endif |
|
|
665 | |
|
|
666 | #if !HAVE_READDIR_R |
|
|
667 | # define readdir_r aio_readdir_r |
|
|
668 | |
|
|
669 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
|
670 | |
|
|
671 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
672 | { |
|
|
673 | struct dirent *e; |
|
|
674 | int errorno; |
|
|
675 | |
|
|
676 | pthread_mutex_lock (&readdirlock); |
|
|
677 | |
|
|
678 | e = readdir (dirp); |
|
|
679 | errorno = errno; |
|
|
680 | |
|
|
681 | if (e) |
|
|
682 | { |
|
|
683 | *res = ent; |
|
|
684 | strcpy (ent->d_name, e->d_name); |
258 | } |
685 | } |
259 | else |
686 | else |
|
|
687 | *res = 0; |
|
|
688 | |
|
|
689 | pthread_mutex_unlock (&readdirlock); |
|
|
690 | |
|
|
691 | errno = errorno; |
|
|
692 | return e ? 0 : -1; |
|
|
693 | } |
|
|
694 | #endif |
|
|
695 | |
|
|
696 | /* sendfile always needs emulation */ |
|
|
697 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
698 | { |
|
|
699 | ssize_t res; |
|
|
700 | |
|
|
701 | if (!count) |
|
|
702 | return 0; |
|
|
703 | |
|
|
704 | #if HAVE_SENDFILE |
|
|
705 | # if __linux |
|
|
706 | res = sendfile (ofd, ifd, &offset, count); |
|
|
707 | |
|
|
708 | # elif __freebsd |
|
|
709 | /* |
|
|
710 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
711 | * wasted on making it similar to other I/O functions. |
|
|
712 | */ |
|
|
713 | { |
|
|
714 | off_t sbytes; |
|
|
715 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
716 | |
|
|
717 | if (res < 0 && sbytes) |
|
|
718 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
719 | res = sbytes; |
|
|
720 | } |
|
|
721 | |
|
|
722 | # elif __hpux |
|
|
723 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
724 | |
|
|
725 | # elif __solaris |
|
|
726 | { |
|
|
727 | struct sendfilevec vec; |
|
|
728 | size_t sbytes; |
|
|
729 | |
|
|
730 | vec.sfv_fd = ifd; |
|
|
731 | vec.sfv_flag = 0; |
|
|
732 | vec.sfv_off = offset; |
|
|
733 | vec.sfv_len = count; |
|
|
734 | |
|
|
735 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
736 | |
|
|
737 | if (res < 0 && sbytes) |
|
|
738 | res = sbytes; |
|
|
739 | } |
|
|
740 | |
|
|
741 | # endif |
|
|
742 | #else |
|
|
743 | res = -1; |
|
|
744 | errno = ENOSYS; |
|
|
745 | #endif |
|
|
746 | |
|
|
747 | if (res < 0 |
|
|
748 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
749 | #if __solaris |
|
|
750 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
751 | #endif |
|
|
752 | ) |
|
|
753 | ) |
|
|
754 | { |
|
|
755 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
756 | dBUF; |
|
|
757 | |
|
|
758 | res = 0; |
|
|
759 | |
|
|
760 | while (count) |
|
|
761 | { |
|
|
762 | ssize_t cnt; |
|
|
763 | |
|
|
764 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
|
|
765 | |
|
|
766 | if (cnt <= 0) |
|
|
767 | { |
|
|
768 | if (cnt && !res) res = -1; |
|
|
769 | break; |
|
|
770 | } |
|
|
771 | |
|
|
772 | cnt = write (ofd, aio_buf, cnt); |
|
|
773 | |
|
|
774 | if (cnt <= 0) |
|
|
775 | { |
|
|
776 | if (cnt && !res) res = -1; |
|
|
777 | break; |
|
|
778 | } |
|
|
779 | |
|
|
780 | offset += cnt; |
|
|
781 | res += cnt; |
|
|
782 | count -= cnt; |
|
|
783 | } |
|
|
784 | |
|
|
785 | fBUF; |
|
|
786 | } |
|
|
787 | |
|
|
788 | return res; |
|
|
789 | } |
|
|
790 | |
|
|
791 | /* read a full directory */ |
|
|
792 | static int scandir_ (const char *path, void **namesp) |
|
|
793 | { |
|
|
794 | DIR *dirp; |
|
|
795 | union |
|
|
796 | { |
|
|
797 | struct dirent d; |
|
|
798 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
799 | } *u; |
|
|
800 | struct dirent *entp; |
|
|
801 | char *name, *names; |
|
|
802 | int memlen = 4096; |
|
|
803 | int memofs = 0; |
|
|
804 | int res = 0; |
|
|
805 | int errorno; |
|
|
806 | |
|
|
807 | dirp = opendir (path); |
|
|
808 | if (!dirp) |
|
|
809 | return -1; |
|
|
810 | |
|
|
811 | u = malloc (sizeof (*u)); |
|
|
812 | names = malloc (memlen); |
|
|
813 | |
|
|
814 | if (u && names) |
|
|
815 | for (;;) |
260 | { |
816 | { |
261 | /* read: grow scalar as necessary */ |
817 | errno = 0; |
262 | svptr = SvGROW (data, length + dataoffset); |
818 | readdir_r (dirp, &u->d, &entp); |
|
|
819 | |
|
|
820 | if (!entp) |
|
|
821 | break; |
|
|
822 | |
|
|
823 | name = entp->d_name; |
|
|
824 | |
|
|
825 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
826 | { |
|
|
827 | int len = strlen (name) + 1; |
|
|
828 | |
|
|
829 | res++; |
|
|
830 | |
|
|
831 | while (memofs + len > memlen) |
|
|
832 | { |
|
|
833 | memlen *= 2; |
|
|
834 | names = realloc (names, memlen); |
|
|
835 | if (!names) |
|
|
836 | break; |
|
|
837 | } |
|
|
838 | |
|
|
839 | memcpy (names + memofs, name, len); |
|
|
840 | memofs += len; |
|
|
841 | } |
263 | } |
842 | } |
264 | |
843 | |
265 | if (length < 0) |
844 | errorno = errno; |
266 | croak ("length must not be negative"); |
845 | free (u); |
|
|
846 | closedir (dirp); |
267 | |
847 | |
268 | Newz (0, req, 1, aio_cb); |
848 | if (errorno) |
|
|
849 | { |
|
|
850 | free (names); |
|
|
851 | errno = errorno; |
|
|
852 | res = -1; |
|
|
853 | } |
269 | |
854 | |
270 | if (!req) |
855 | *namesp = (void *)names; |
271 | croak ("out of memory during aio_req allocation"); |
856 | return res; |
272 | |
|
|
273 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
|
|
274 | req->fd = fd; |
|
|
275 | req->offset = offset; |
|
|
276 | req->length = length; |
|
|
277 | req->data = SvREFCNT_inc (data); |
|
|
278 | req->dataptr = (char *)svptr + dataoffset; |
|
|
279 | req->callback = SvREFCNT_inc (callback); |
|
|
280 | |
|
|
281 | send_req (req); |
|
|
282 | } |
857 | } |
283 | |
858 | |
284 | static void * |
859 | /*****************************************************************************/ |
|
|
860 | |
285 | aio_proc (void *thr_arg) |
861 | static void *aio_proc (void *thr_arg) |
286 | { |
862 | { |
287 | aio_req req; |
863 | aio_req req; |
288 | int type; |
864 | int type; |
289 | |
865 | |
290 | do |
866 | do |
291 | { |
867 | { |
292 | pthread_mutex_lock (&reqlock); |
868 | pthread_mutex_lock (&reqlock); |
293 | |
869 | |
294 | for (;;) |
870 | for (;;) |
295 | { |
871 | { |
296 | req = reqs; |
872 | req = reqq_shift (&req_queue); |
297 | |
|
|
298 | if (reqs) |
|
|
299 | { |
|
|
300 | reqs = reqs->next; |
|
|
301 | if (!reqs) reqe = 0; |
|
|
302 | } |
|
|
303 | |
873 | |
304 | if (req) |
874 | if (req) |
305 | break; |
875 | break; |
306 | |
876 | |
307 | pthread_cond_wait (&reqwait, &reqlock); |
877 | pthread_cond_wait (&reqwait, &reqlock); |
308 | } |
878 | } |
309 | |
879 | |
310 | pthread_mutex_unlock (&reqlock); |
880 | pthread_mutex_unlock (&reqlock); |
311 | |
881 | |
312 | errno = 0; /* strictly unnecessary */ |
882 | errno = 0; /* strictly unnecessary */ |
|
|
883 | type = req->type; /* remember type for QUIT check */ |
313 | |
884 | |
314 | type = req->type; |
885 | if (!(req->flags & FLAG_CANCELLED)) |
315 | |
|
|
316 | switch (type) |
886 | switch (type) |
317 | { |
887 | { |
318 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
888 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
319 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
889 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
320 | #if SYS_readahead |
890 | |
321 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
891 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
322 | #else |
892 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
323 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
324 | #endif |
|
|
325 | |
893 | |
326 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
894 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
327 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
895 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
328 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
896 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
329 | |
897 | |
330 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
898 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
331 | case REQ_CLOSE: req->result = close (req->fd); break; |
899 | case REQ_CLOSE: req->result = close (req->fd); break; |
332 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
900 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
333 | |
|
|
334 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
901 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
902 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
|
|
903 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
|
|
904 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
|
|
905 | |
335 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
906 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
907 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
908 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
336 | |
909 | |
|
|
910 | case REQ_SLEEP: |
|
|
911 | { |
|
|
912 | struct timeval tv; |
|
|
913 | |
|
|
914 | tv.tv_sec = req->fd; |
|
|
915 | tv.tv_usec = req->fd2; |
|
|
916 | |
|
|
917 | req->result = select (0, 0, 0, 0, &tv); |
|
|
918 | } |
|
|
919 | |
|
|
920 | case REQ_GROUP: |
|
|
921 | case REQ_NOP: |
337 | case REQ_QUIT: |
922 | case REQ_QUIT: |
338 | break; |
923 | break; |
339 | |
924 | |
340 | default: |
925 | default: |
341 | req->result = ENOSYS; |
926 | req->result = ENOSYS; |
342 | break; |
927 | break; |
343 | } |
928 | } |
344 | |
929 | |
345 | req->errorno = errno; |
930 | req->errorno = errno; |
346 | |
931 | |
347 | pthread_mutex_lock (&reslock); |
932 | pthread_mutex_lock (&reslock); |
348 | |
933 | |
349 | req->next = 0; |
934 | if (!reqq_push (&res_queue, req)) |
350 | |
|
|
351 | if (rese) |
|
|
352 | { |
|
|
353 | rese->next = req; |
|
|
354 | rese = req; |
|
|
355 | } |
|
|
356 | else |
|
|
357 | { |
|
|
358 | rese = ress = req; |
|
|
359 | |
|
|
360 | /* write a dummy byte to the pipe so fh becomes ready */ |
935 | /* write a dummy byte to the pipe so fh becomes ready */ |
361 | write (respipe [1], &respipe, 1); |
936 | write (respipe [1], &respipe, 1); |
362 | } |
|
|
363 | |
937 | |
364 | pthread_mutex_unlock (&reslock); |
938 | pthread_mutex_unlock (&reslock); |
365 | } |
939 | } |
366 | while (type != REQ_QUIT); |
940 | while (type != REQ_QUIT); |
367 | |
941 | |
368 | return 0; |
942 | return 0; |
369 | } |
943 | } |
370 | |
944 | |
|
|
945 | /*****************************************************************************/ |
|
|
946 | |
|
|
947 | static void atfork_prepare (void) |
|
|
948 | { |
|
|
949 | pthread_mutex_lock (&reqlock); |
|
|
950 | pthread_mutex_lock (&reslock); |
|
|
951 | #if !HAVE_PREADWRITE |
|
|
952 | pthread_mutex_lock (&preadwritelock); |
|
|
953 | #endif |
|
|
954 | #if !HAVE_READDIR_R |
|
|
955 | pthread_mutex_lock (&readdirlock); |
|
|
956 | #endif |
|
|
957 | } |
|
|
958 | |
|
|
959 | static void atfork_parent (void) |
|
|
960 | { |
|
|
961 | #if !HAVE_READDIR_R |
|
|
962 | pthread_mutex_unlock (&readdirlock); |
|
|
963 | #endif |
|
|
964 | #if !HAVE_PREADWRITE |
|
|
965 | pthread_mutex_unlock (&preadwritelock); |
|
|
966 | #endif |
|
|
967 | pthread_mutex_unlock (&reslock); |
|
|
968 | pthread_mutex_unlock (&reqlock); |
|
|
969 | } |
|
|
970 | |
|
|
971 | static void atfork_child (void) |
|
|
972 | { |
|
|
973 | aio_req prv; |
|
|
974 | |
|
|
975 | started = 0; |
|
|
976 | |
|
|
977 | while (prv = reqq_shift (&req_queue)) |
|
|
978 | req_free (prv); |
|
|
979 | |
|
|
980 | while (prv = reqq_shift (&res_queue)) |
|
|
981 | req_free (prv); |
|
|
982 | |
|
|
983 | close (respipe [0]); |
|
|
984 | close (respipe [1]); |
|
|
985 | create_pipe (); |
|
|
986 | |
|
|
987 | atfork_parent (); |
|
|
988 | } |
|
|
989 | |
|
|
990 | #define dREQ \ |
|
|
991 | aio_req req; \ |
|
|
992 | int req_pri = next_pri; \ |
|
|
993 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
|
|
994 | \ |
|
|
995 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
996 | croak ("callback must be undef or of reference type"); \ |
|
|
997 | \ |
|
|
998 | Newz (0, req, 1, aio_cb); \ |
|
|
999 | if (!req) \ |
|
|
1000 | croak ("out of memory during aio_req allocation"); \ |
|
|
1001 | \ |
|
|
1002 | req->callback = newSVsv (callback); \ |
|
|
1003 | req->pri = req_pri |
|
|
1004 | |
|
|
1005 | #define REQ_SEND \ |
|
|
1006 | req_send (req); \ |
|
|
1007 | \ |
|
|
1008 | if (GIMME_V != G_VOID) \ |
|
|
1009 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
|
|
1010 | |
371 | MODULE = IO::AIO PACKAGE = IO::AIO |
1011 | MODULE = IO::AIO PACKAGE = IO::AIO |
372 | |
1012 | |
373 | PROTOTYPES: ENABLE |
1013 | PROTOTYPES: ENABLE |
374 | |
1014 | |
375 | BOOT: |
1015 | BOOT: |
376 | { |
1016 | { |
377 | if (pipe (respipe)) |
1017 | HV *stash = gv_stashpv ("IO::AIO", 1); |
378 | croak ("unable to initialize result pipe"); |
1018 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
|
|
1019 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
1020 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
379 | |
1021 | |
380 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
1022 | create_pipe (); |
381 | croak ("cannot set result pipe to nonblocking mode"); |
1023 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
382 | |
|
|
383 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
384 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
385 | } |
1024 | } |
386 | |
1025 | |
387 | void |
1026 | void |
388 | min_parallel(nthreads) |
1027 | min_parallel (nthreads) |
389 | int nthreads |
1028 | int nthreads |
390 | PROTOTYPE: $ |
1029 | PROTOTYPE: $ |
391 | CODE: |
|
|
392 | while (nthreads > started) |
|
|
393 | start_thread (); |
|
|
394 | |
1030 | |
395 | void |
1031 | void |
396 | max_parallel(nthreads) |
1032 | max_parallel (nthreads) |
397 | int nthreads |
1033 | int nthreads |
398 | PROTOTYPE: $ |
1034 | PROTOTYPE: $ |
399 | CODE: |
|
|
400 | { |
|
|
401 | int cur = started; |
|
|
402 | while (cur > nthreads) |
|
|
403 | { |
|
|
404 | end_thread (); |
|
|
405 | cur--; |
|
|
406 | } |
|
|
407 | |
|
|
408 | while (started > nthreads) |
|
|
409 | { |
|
|
410 | poll_wait (); |
|
|
411 | poll_cb (); |
|
|
412 | } |
|
|
413 | } |
|
|
414 | |
1035 | |
415 | int |
1036 | int |
416 | max_outstanding(nreqs) |
1037 | max_outstanding (nreqs) |
417 | int nreqs |
1038 | int nreqs |
418 | PROTOTYPE: $ |
1039 | PROTOTYPE: $ |
419 | CODE: |
1040 | CODE: |
420 | RETVAL = max_outstanding; |
1041 | RETVAL = max_outstanding; |
421 | max_outstanding = nreqs; |
1042 | max_outstanding = nreqs; |
422 | |
1043 | |
423 | void |
1044 | void |
424 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
1045 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
425 | SV * pathname |
1046 | SV * pathname |
426 | int flags |
1047 | int flags |
427 | int mode |
1048 | int mode |
428 | SV * callback |
1049 | SV * callback |
429 | PROTOTYPE: $$$;$ |
1050 | PROTOTYPE: $$$;$ |
430 | CODE: |
1051 | PPCODE: |
431 | { |
1052 | { |
432 | aio_req req; |
1053 | dREQ; |
433 | |
|
|
434 | Newz (0, req, 1, aio_cb); |
|
|
435 | |
|
|
436 | if (!req) |
|
|
437 | croak ("out of memory during aio_req allocation"); |
|
|
438 | |
1054 | |
439 | req->type = REQ_OPEN; |
1055 | req->type = REQ_OPEN; |
440 | req->data = newSVsv (pathname); |
1056 | req->data = newSVsv (pathname); |
441 | req->dataptr = SvPV_nolen (req->data); |
1057 | req->dataptr = SvPVbyte_nolen (req->data); |
442 | req->fd = flags; |
1058 | req->fd = flags; |
443 | req->mode = mode; |
1059 | req->mode = mode; |
444 | req->callback = SvREFCNT_inc (callback); |
|
|
445 | |
1060 | |
446 | send_req (req); |
1061 | REQ_SEND; |
447 | } |
1062 | } |
448 | |
1063 | |
449 | void |
1064 | void |
450 | aio_close(fh,callback=&PL_sv_undef) |
1065 | aio_close (fh,callback=&PL_sv_undef) |
451 | InputStream fh |
1066 | SV * fh |
452 | SV * callback |
1067 | SV * callback |
453 | PROTOTYPE: $;$ |
1068 | PROTOTYPE: $;$ |
454 | ALIAS: |
1069 | ALIAS: |
455 | aio_close = REQ_CLOSE |
1070 | aio_close = REQ_CLOSE |
456 | aio_fsync = REQ_FSYNC |
1071 | aio_fsync = REQ_FSYNC |
457 | aio_fdatasync = REQ_FDATASYNC |
1072 | aio_fdatasync = REQ_FDATASYNC |
458 | CODE: |
1073 | PPCODE: |
|
|
1074 | { |
|
|
1075 | dREQ; |
|
|
1076 | |
|
|
1077 | req->type = ix; |
|
|
1078 | req->fh = newSVsv (fh); |
|
|
1079 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1080 | |
|
|
1081 | REQ_SEND (req); |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | void |
|
|
1085 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
1086 | SV * fh |
|
|
1087 | UV offset |
|
|
1088 | UV length |
|
|
1089 | SV * data |
|
|
1090 | UV dataoffset |
|
|
1091 | SV * callback |
|
|
1092 | ALIAS: |
|
|
1093 | aio_read = REQ_READ |
|
|
1094 | aio_write = REQ_WRITE |
|
|
1095 | PROTOTYPE: $$$$$;$ |
|
|
1096 | PPCODE: |
459 | { |
1097 | { |
460 | aio_req req; |
1098 | aio_req req; |
|
|
1099 | STRLEN svlen; |
|
|
1100 | char *svptr = SvPVbyte (data, svlen); |
461 | |
1101 | |
462 | Newz (0, req, 1, aio_cb); |
1102 | SvUPGRADE (data, SVt_PV); |
|
|
1103 | SvPOK_on (data); |
463 | |
1104 | |
464 | if (!req) |
1105 | if (dataoffset < 0) |
465 | croak ("out of memory during aio_req allocation"); |
1106 | dataoffset += svlen; |
466 | |
1107 | |
467 | req->type = ix; |
1108 | if (dataoffset < 0 || dataoffset > svlen) |
468 | req->fd = PerlIO_fileno (fh); |
1109 | croak ("data offset outside of string"); |
469 | req->callback = SvREFCNT_inc (callback); |
|
|
470 | |
1110 | |
471 | send_req (req); |
1111 | if (ix == REQ_WRITE) |
472 | } |
1112 | { |
473 | |
1113 | /* write: check length and adjust. */ |
474 | void |
1114 | if (length < 0 || length + dataoffset > svlen) |
475 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
1115 | length = svlen - dataoffset; |
476 | InputStream fh |
1116 | } |
477 | UV offset |
1117 | else |
478 | IV length |
1118 | { |
479 | SV * data |
1119 | /* read: grow scalar as necessary */ |
480 | IV dataoffset |
1120 | svptr = SvGROW (data, length + dataoffset); |
481 | SV * callback |
1121 | } |
482 | PROTOTYPE: $$$$$;$ |
|
|
483 | CODE: |
|
|
484 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
485 | |
|
|
486 | void |
|
|
487 | aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
488 | OutputStream fh |
|
|
489 | UV offset |
|
|
490 | IV length |
|
|
491 | SV * data |
|
|
492 | IV dataoffset |
|
|
493 | SV * callback |
|
|
494 | PROTOTYPE: $$$$$;$ |
|
|
495 | CODE: |
|
|
496 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
497 | |
|
|
498 | void |
|
|
499 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
500 | InputStream fh |
|
|
501 | UV offset |
|
|
502 | IV length |
|
|
503 | SV * callback |
|
|
504 | PROTOTYPE: $$$;$ |
|
|
505 | CODE: |
|
|
506 | { |
|
|
507 | aio_req req; |
|
|
508 | |
1122 | |
509 | if (length < 0) |
1123 | if (length < 0) |
510 | croak ("length must not be negative"); |
1124 | croak ("length must not be negative"); |
511 | |
1125 | |
512 | Newz (0, req, 1, aio_cb); |
1126 | { |
|
|
1127 | dREQ; |
513 | |
1128 | |
514 | if (!req) |
1129 | req->type = ix; |
515 | croak ("out of memory during aio_req allocation"); |
1130 | req->fh = newSVsv (fh); |
|
|
1131 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
1132 | : IoOFP (sv_2io (fh))); |
|
|
1133 | req->offset = offset; |
|
|
1134 | req->length = length; |
|
|
1135 | req->data = SvREFCNT_inc (data); |
|
|
1136 | req->dataptr = (char *)svptr + dataoffset; |
|
|
1137 | |
|
|
1138 | if (!SvREADONLY (data)) |
|
|
1139 | { |
|
|
1140 | SvREADONLY_on (data); |
|
|
1141 | req->data2ptr = (void *)data; |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | REQ_SEND; |
|
|
1145 | } |
|
|
1146 | } |
|
|
1147 | |
|
|
1148 | void |
|
|
1149 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
1150 | SV * out_fh |
|
|
1151 | SV * in_fh |
|
|
1152 | UV in_offset |
|
|
1153 | UV length |
|
|
1154 | SV * callback |
|
|
1155 | PROTOTYPE: $$$$;$ |
|
|
1156 | PPCODE: |
|
|
1157 | { |
|
|
1158 | dREQ; |
|
|
1159 | |
|
|
1160 | req->type = REQ_SENDFILE; |
|
|
1161 | req->fh = newSVsv (out_fh); |
|
|
1162 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1163 | req->fh2 = newSVsv (in_fh); |
|
|
1164 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1165 | req->offset = in_offset; |
|
|
1166 | req->length = length; |
|
|
1167 | |
|
|
1168 | REQ_SEND; |
|
|
1169 | } |
|
|
1170 | |
|
|
1171 | void |
|
|
1172 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
|
|
1173 | SV * fh |
|
|
1174 | UV offset |
|
|
1175 | IV length |
|
|
1176 | SV * callback |
|
|
1177 | PROTOTYPE: $$$;$ |
|
|
1178 | PPCODE: |
|
|
1179 | { |
|
|
1180 | dREQ; |
516 | |
1181 | |
517 | req->type = REQ_READAHEAD; |
1182 | req->type = REQ_READAHEAD; |
|
|
1183 | req->fh = newSVsv (fh); |
518 | req->fd = PerlIO_fileno (fh); |
1184 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
519 | req->offset = offset; |
1185 | req->offset = offset; |
520 | req->length = length; |
1186 | req->length = length; |
521 | req->callback = SvREFCNT_inc (callback); |
|
|
522 | |
1187 | |
523 | send_req (req); |
1188 | REQ_SEND; |
524 | } |
1189 | } |
525 | |
1190 | |
526 | void |
1191 | void |
527 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
1192 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
528 | SV * fh_or_path |
1193 | SV * fh_or_path |
529 | SV * callback |
1194 | SV * callback |
530 | ALIAS: |
1195 | ALIAS: |
531 | aio_stat = REQ_STAT |
1196 | aio_stat = REQ_STAT |
532 | aio_lstat = REQ_LSTAT |
1197 | aio_lstat = REQ_LSTAT |
533 | CODE: |
1198 | PPCODE: |
534 | { |
1199 | { |
535 | aio_req req; |
1200 | dREQ; |
536 | |
|
|
537 | Newz (0, req, 1, aio_cb); |
|
|
538 | |
|
|
539 | if (!req) |
|
|
540 | croak ("out of memory during aio_req allocation"); |
|
|
541 | |
1201 | |
542 | New (0, req->statdata, 1, Stat_t); |
1202 | New (0, req->statdata, 1, Stat_t); |
543 | |
|
|
544 | if (!req->statdata) |
1203 | if (!req->statdata) |
|
|
1204 | { |
|
|
1205 | req_free (req); |
545 | croak ("out of memory during aio_req->statdata allocation"); |
1206 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
1207 | } |
546 | |
1208 | |
547 | if (SvPOK (fh_or_path)) |
1209 | if (SvPOK (fh_or_path)) |
548 | { |
1210 | { |
549 | req->type = ix; |
1211 | req->type = ix; |
550 | req->data = newSVsv (fh_or_path); |
1212 | req->data = newSVsv (fh_or_path); |
551 | req->dataptr = SvPV_nolen (req->data); |
1213 | req->dataptr = SvPVbyte_nolen (req->data); |
552 | } |
1214 | } |
553 | else |
1215 | else |
554 | { |
1216 | { |
555 | req->type = REQ_FSTAT; |
1217 | req->type = REQ_FSTAT; |
|
|
1218 | req->fh = newSVsv (fh_or_path); |
556 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1219 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
557 | } |
1220 | } |
558 | |
1221 | |
559 | req->callback = SvREFCNT_inc (callback); |
1222 | REQ_SEND; |
560 | |
|
|
561 | send_req (req); |
|
|
562 | } |
1223 | } |
563 | |
1224 | |
564 | void |
1225 | void |
565 | aio_unlink(pathname,callback=&PL_sv_undef) |
1226 | aio_unlink (pathname,callback=&PL_sv_undef) |
566 | SV * pathname |
1227 | SV * pathname |
567 | SV * callback |
1228 | SV * callback |
|
|
1229 | ALIAS: |
|
|
1230 | aio_unlink = REQ_UNLINK |
|
|
1231 | aio_rmdir = REQ_RMDIR |
|
|
1232 | aio_readdir = REQ_READDIR |
|
|
1233 | PPCODE: |
|
|
1234 | { |
|
|
1235 | dREQ; |
|
|
1236 | |
|
|
1237 | req->type = ix; |
|
|
1238 | req->data = newSVsv (pathname); |
|
|
1239 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1240 | |
|
|
1241 | REQ_SEND; |
|
|
1242 | } |
|
|
1243 | |
|
|
1244 | void |
|
|
1245 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
|
|
1246 | SV * oldpath |
|
|
1247 | SV * newpath |
|
|
1248 | SV * callback |
|
|
1249 | ALIAS: |
|
|
1250 | aio_link = REQ_LINK |
|
|
1251 | aio_symlink = REQ_SYMLINK |
|
|
1252 | aio_rename = REQ_RENAME |
|
|
1253 | PPCODE: |
|
|
1254 | { |
|
|
1255 | dREQ; |
|
|
1256 | |
|
|
1257 | req->type = ix; |
|
|
1258 | req->fh = newSVsv (oldpath); |
|
|
1259 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
1260 | req->data = newSVsv (newpath); |
|
|
1261 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1262 | |
|
|
1263 | REQ_SEND; |
|
|
1264 | } |
|
|
1265 | |
|
|
1266 | void |
|
|
1267 | aio_sleep (delay,callback=&PL_sv_undef) |
|
|
1268 | double delay |
|
|
1269 | SV * callback |
|
|
1270 | PPCODE: |
|
|
1271 | { |
|
|
1272 | dREQ; |
|
|
1273 | |
|
|
1274 | req->type = REQ_SLEEP; |
|
|
1275 | req->fd = delay < 0. ? 0 : delay; |
|
|
1276 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1277 | |
|
|
1278 | REQ_SEND; |
|
|
1279 | } |
|
|
1280 | |
|
|
1281 | void |
|
|
1282 | aio_group (callback=&PL_sv_undef) |
|
|
1283 | SV * callback |
|
|
1284 | PROTOTYPE: ;$ |
|
|
1285 | PPCODE: |
|
|
1286 | { |
|
|
1287 | dREQ; |
|
|
1288 | |
|
|
1289 | req->type = REQ_GROUP; |
|
|
1290 | req_send (req); |
|
|
1291 | |
|
|
1292 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1293 | } |
|
|
1294 | |
|
|
1295 | void |
|
|
1296 | aio_nop (callback=&PL_sv_undef) |
|
|
1297 | SV * callback |
|
|
1298 | PPCODE: |
|
|
1299 | { |
|
|
1300 | dREQ; |
|
|
1301 | |
|
|
1302 | req->type = REQ_NOP; |
|
|
1303 | |
|
|
1304 | REQ_SEND; |
|
|
1305 | } |
|
|
1306 | |
|
|
1307 | void |
|
|
1308 | aioreq_pri (int pri = DEFAULT_PRI) |
568 | CODE: |
1309 | CODE: |
569 | { |
1310 | if (pri < PRI_MIN) pri = PRI_MIN; |
570 | aio_req req; |
1311 | if (pri > PRI_MAX) pri = PRI_MAX; |
571 | |
1312 | next_pri = pri + PRI_BIAS; |
572 | Newz (0, req, 1, aio_cb); |
|
|
573 | |
|
|
574 | if (!req) |
|
|
575 | croak ("out of memory during aio_req allocation"); |
|
|
576 | |
|
|
577 | req->type = REQ_UNLINK; |
|
|
578 | req->data = newSVsv (pathname); |
|
|
579 | req->dataptr = SvPV_nolen (req->data); |
|
|
580 | req->callback = SvREFCNT_inc (callback); |
|
|
581 | |
|
|
582 | send_req (req); |
|
|
583 | } |
|
|
584 | |
1313 | |
585 | void |
1314 | void |
586 | flush() |
1315 | flush () |
587 | PROTOTYPE: |
1316 | PROTOTYPE: |
588 | CODE: |
1317 | CODE: |
589 | while (nreqs) |
1318 | while (nreqs) |
590 | { |
1319 | { |
591 | poll_wait (); |
1320 | poll_wait (); |
… | |
… | |
631 | CODE: |
1360 | CODE: |
632 | RETVAL = nreqs; |
1361 | RETVAL = nreqs; |
633 | OUTPUT: |
1362 | OUTPUT: |
634 | RETVAL |
1363 | RETVAL |
635 | |
1364 | |
|
|
1365 | PROTOTYPES: DISABLE |
|
|
1366 | |
|
|
1367 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1368 | |
|
|
1369 | void |
|
|
1370 | cancel (aio_req_ornot req) |
|
|
1371 | CODE: |
|
|
1372 | req_cancel (req); |
|
|
1373 | |
|
|
1374 | void |
|
|
1375 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1376 | CODE: |
|
|
1377 | SvREFCNT_dec (req->callback); |
|
|
1378 | req->callback = newSVsv (callback); |
|
|
1379 | |
|
|
1380 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1381 | |
|
|
1382 | void |
|
|
1383 | add (aio_req grp, ...) |
|
|
1384 | PPCODE: |
|
|
1385 | { |
|
|
1386 | int i; |
|
|
1387 | aio_req req; |
|
|
1388 | |
|
|
1389 | if (grp->fd == 2) |
|
|
1390 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1391 | |
|
|
1392 | for (i = 1; i < items; ++i ) |
|
|
1393 | { |
|
|
1394 | if (GIMME_V != G_VOID) |
|
|
1395 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1396 | |
|
|
1397 | req = SvAIO_REQ (ST (i)); |
|
|
1398 | |
|
|
1399 | if (req) |
|
|
1400 | { |
|
|
1401 | ++grp->length; |
|
|
1402 | req->grp = grp; |
|
|
1403 | |
|
|
1404 | req->grp_prev = 0; |
|
|
1405 | req->grp_next = grp->grp_first; |
|
|
1406 | |
|
|
1407 | if (grp->grp_first) |
|
|
1408 | grp->grp_first->grp_prev = req; |
|
|
1409 | |
|
|
1410 | grp->grp_first = req; |
|
|
1411 | } |
|
|
1412 | } |
|
|
1413 | } |
|
|
1414 | |
|
|
1415 | void |
|
|
1416 | result (aio_req grp, ...) |
|
|
1417 | CODE: |
|
|
1418 | { |
|
|
1419 | int i; |
|
|
1420 | AV *av = newAV (); |
|
|
1421 | |
|
|
1422 | for (i = 1; i < items; ++i ) |
|
|
1423 | av_push (av, newSVsv (ST (i))); |
|
|
1424 | |
|
|
1425 | SvREFCNT_dec (grp->data); |
|
|
1426 | grp->data = (SV *)av; |
|
|
1427 | } |
|
|
1428 | |
|
|
1429 | void |
|
|
1430 | limit (aio_req grp, int limit) |
|
|
1431 | CODE: |
|
|
1432 | grp->fd2 = limit; |
|
|
1433 | aio_grp_feed (grp); |
|
|
1434 | |
|
|
1435 | void |
|
|
1436 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1437 | CODE: |
|
|
1438 | { |
|
|
1439 | SvREFCNT_dec (grp->fh2); |
|
|
1440 | grp->fh2 = newSVsv (callback); |
|
|
1441 | |
|
|
1442 | if (grp->fd2 <= 0) |
|
|
1443 | grp->fd2 = 2; |
|
|
1444 | |
|
|
1445 | aio_grp_feed (grp); |
|
|
1446 | } |
|
|
1447 | |