1 | #define PERL_NO_GET_CONTEXT |
1 | /* solaris */ |
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2 | #define _POSIX_PTHREAD_SEMANTICS 1 |
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3 | |
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4 | #if __linux && !defined(_GNU_SOURCE) |
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5 | # define _GNU_SOURCE |
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6 | #endif |
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7 | |
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8 | /* just in case */ |
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9 | #define _REENTRANT 1 |
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10 | |
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11 | #include <errno.h> |
2 | |
12 | |
3 | #include "EXTERN.h" |
13 | #include "EXTERN.h" |
4 | #include "perl.h" |
14 | #include "perl.h" |
5 | #include "XSUB.h" |
15 | #include "XSUB.h" |
6 | |
16 | |
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17 | #include "autoconf/config.h" |
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18 | |
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19 | #include <pthread.h> |
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20 | |
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21 | #include <stddef.h> |
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22 | #include <errno.h> |
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23 | #include <sys/time.h> |
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24 | #include <sys/select.h> |
7 | #include <sys/types.h> |
25 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
26 | #include <sys/stat.h> |
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27 | #include <limits.h> |
9 | #include <unistd.h> |
28 | #include <unistd.h> |
10 | #include <fcntl.h> |
29 | #include <fcntl.h> |
11 | #include <signal.h> |
30 | #include <signal.h> |
12 | #include <sched.h> |
31 | #include <sched.h> |
13 | #include <endian.h> |
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14 | |
32 | |
15 | #include <pthread.h> |
33 | #if HAVE_SENDFILE |
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34 | # if __linux |
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35 | # include <sys/sendfile.h> |
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36 | # elif __freebsd |
16 | #include <sys/syscall.h> |
37 | # include <sys/socket.h> |
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38 | # include <sys/uio.h> |
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39 | # elif __hpux |
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40 | # include <sys/socket.h> |
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41 | # elif __solaris /* not yet */ |
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42 | # include <sys/sendfile.h> |
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43 | # else |
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44 | # error sendfile support requested but not available |
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45 | # endif |
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46 | #endif |
17 | |
47 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
48 | /* used for struct dirent, AIX doesn't provide it */ |
19 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
49 | #ifndef NAME_MAX |
20 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
50 | # define NAME_MAX 4096 |
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51 | #endif |
21 | |
52 | |
22 | #if __i386 || __amd64 |
53 | #ifndef PTHREAD_STACK_MIN |
23 | # define STACKSIZE ( 256 * sizeof (long)) |
54 | /* care for broken platforms, e.g. windows */ |
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55 | # define PTHREAD_STACK_MIN 16384 |
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56 | #endif |
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57 | |
24 | #elif __ia64 |
58 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
59 | # define STACKSIZE 65536 |
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60 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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61 | # define STACKSIZE PTHREAD_STACK_MIN |
26 | #else |
62 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
63 | # define STACKSIZE 16384 |
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64 | #endif |
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65 | |
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66 | /* wether word reads are potentially non-atomic. |
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67 | * this is conservatice, likely most arches this runs |
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68 | * on have atomic word read/writes. |
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69 | */ |
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70 | #ifndef WORDREAD_UNSAFE |
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71 | # if __i386 || __x86_64 |
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72 | # define WORDREAD_UNSAFE 0 |
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73 | # else |
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74 | # define WORDREAD_UNSAFE 1 |
28 | #endif |
75 | # endif |
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76 | #endif |
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77 | |
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78 | /* buffer size for various temporary buffers */ |
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79 | #define AIO_BUFSIZE 65536 |
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80 | |
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81 | #define dBUF \ |
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82 | char *aio_buf; \ |
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83 | LOCK (wrklock); \ |
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84 | self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \ |
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85 | UNLOCK (wrklock); \ |
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86 | if (!aio_buf) \ |
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87 | return -1; |
29 | |
88 | |
30 | enum { |
89 | enum { |
31 | REQ_QUIT, |
90 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
91 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
92 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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93 | REQ_SENDFILE, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
94 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
95 | REQ_FSYNC, REQ_FDATASYNC, |
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96 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
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97 | REQ_READDIR, |
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98 | REQ_LINK, REQ_SYMLINK, |
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99 | REQ_GROUP, REQ_NOP, |
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100 | REQ_BUSY, |
36 | }; |
101 | }; |
37 | |
102 | |
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103 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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104 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
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105 | |
38 | typedef struct aio_cb { |
106 | typedef struct aio_cb |
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107 | { |
39 | struct aio_cb *next; |
108 | struct aio_cb *volatile next; |
40 | |
109 | |
41 | int type; |
110 | SV *data, *callback; |
42 | |
111 | SV *fh, *fh2; |
43 | int fd; |
112 | void *dataptr, *data2ptr; |
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113 | Stat_t *statdata; |
44 | off_t offset; |
114 | off_t offset; |
45 | size_t length; |
115 | size_t length; |
46 | ssize_t result; |
116 | ssize_t result; |
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117 | |
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118 | STRLEN dataoffset; |
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119 | int type; |
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120 | int fd, fd2; |
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121 | int errorno; |
47 | mode_t mode; /* open */ |
122 | 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 | |
123 | |
53 | Stat_t *statdata; |
124 | unsigned char flags; |
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125 | unsigned char pri; |
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126 | |
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127 | SV *self; /* the perl counterpart of this request, if any */ |
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128 | struct aio_cb *grp, *grp_prev, *grp_next, *grp_first; |
54 | } aio_cb; |
129 | } aio_cb; |
55 | |
130 | |
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131 | enum { |
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132 | FLAG_CANCELLED = 0x01, |
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133 | }; |
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134 | |
56 | typedef aio_cb *aio_req; |
135 | typedef aio_cb *aio_req; |
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136 | typedef aio_cb *aio_req_ornot; |
57 | |
137 | |
58 | static int started; |
138 | enum { |
59 | static int nreqs; |
139 | PRI_MIN = -4, |
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140 | PRI_MAX = 4, |
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141 | |
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142 | DEFAULT_PRI = 0, |
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143 | PRI_BIAS = -PRI_MIN, |
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144 | NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
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145 | }; |
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146 | |
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147 | static int next_pri = DEFAULT_PRI + PRI_BIAS; |
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148 | |
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149 | static unsigned int started, wanted; |
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150 | |
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151 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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152 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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153 | #else |
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154 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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155 | #endif |
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156 | |
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157 | #define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
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158 | #define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
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159 | |
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160 | /* worker threads management */ |
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161 | static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
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162 | |
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163 | typedef struct worker { |
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164 | /* locked by wrklock */ |
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165 | struct worker *prev, *next; |
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166 | |
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167 | pthread_t tid; |
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168 | |
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169 | /* locked by reslock, reqlock or wrklock */ |
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170 | aio_req req; /* currently processed request */ |
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171 | void *dbuf; |
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172 | DIR *dirp; |
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173 | } worker; |
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174 | |
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175 | static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
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176 | |
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177 | static void worker_clear (worker *wrk) |
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178 | { |
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179 | if (wrk->dirp) |
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180 | { |
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181 | closedir (wrk->dirp); |
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182 | wrk->dirp = 0; |
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183 | } |
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184 | |
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185 | if (wrk->dbuf) |
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186 | { |
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187 | free (wrk->dbuf); |
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188 | wrk->dbuf = 0; |
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189 | } |
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190 | } |
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191 | |
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192 | static void worker_free (worker *wrk) |
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193 | { |
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194 | wrk->next->prev = wrk->prev; |
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195 | wrk->prev->next = wrk->next; |
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196 | |
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197 | free (wrk); |
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198 | } |
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199 | |
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200 | static volatile unsigned int nreqs, nready, npending; |
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201 | static volatile unsigned int max_outstanding = 0xffffffff; |
60 | static int reqpipe[2], respipe[2]; |
202 | static int respipe [2]; |
61 | |
203 | |
62 | static aio_req qs, qe; /* queue start, queue end */ |
204 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
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205 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
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206 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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207 | |
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208 | #if WORDREAD_UNSAFE |
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209 | |
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210 | static unsigned int get_nready () |
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211 | { |
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212 | unsigned int retval; |
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213 | |
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214 | LOCK (reqlock); |
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215 | retval = nready; |
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216 | UNLOCK (reqlock); |
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217 | |
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218 | return retval; |
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219 | } |
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220 | |
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221 | static unsigned int get_npending () |
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222 | { |
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223 | unsigned int retval; |
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224 | |
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225 | LOCK (reslock); |
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226 | retval = npending; |
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227 | UNLOCK (reslock); |
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228 | |
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229 | return retval; |
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230 | } |
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231 | |
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232 | #else |
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233 | |
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234 | # define get_nready() nready |
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235 | # define get_npending() npending |
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236 | |
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237 | #endif |
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238 | |
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239 | /* |
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240 | * a somewhat faster data structure might be nice, but |
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241 | * with 8 priorities this actually needs <20 insns |
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242 | * per shift, the most expensive operation. |
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243 | */ |
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244 | typedef struct { |
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245 | aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
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246 | int size; |
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247 | } reqq; |
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248 | |
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249 | static reqq req_queue; |
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250 | static reqq res_queue; |
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251 | |
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252 | int reqq_push (reqq *q, aio_req req) |
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253 | { |
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254 | int pri = req->pri; |
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255 | req->next = 0; |
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256 | |
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257 | if (q->qe[pri]) |
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258 | { |
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259 | q->qe[pri]->next = req; |
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260 | q->qe[pri] = req; |
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261 | } |
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262 | else |
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263 | q->qe[pri] = q->qs[pri] = req; |
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264 | |
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265 | return q->size++; |
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266 | } |
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267 | |
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268 | aio_req reqq_shift (reqq *q) |
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269 | { |
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270 | int pri; |
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271 | |
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272 | if (!q->size) |
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273 | return 0; |
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274 | |
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275 | --q->size; |
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276 | |
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277 | for (pri = NUM_PRI; pri--; ) |
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278 | { |
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279 | aio_req req = q->qs[pri]; |
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280 | |
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281 | if (req) |
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282 | { |
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283 | if (!(q->qs[pri] = req->next)) |
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284 | q->qe[pri] = 0; |
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285 | |
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286 | return req; |
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287 | } |
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288 | } |
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289 | |
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290 | abort (); |
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291 | } |
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292 | |
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293 | static int poll_cb (int max); |
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294 | static void req_invoke (aio_req req); |
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295 | static void req_free (aio_req req); |
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296 | static void req_cancel (aio_req req); |
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297 | |
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298 | /* must be called at most once */ |
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299 | static SV *req_sv (aio_req req, const char *klass) |
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300 | { |
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301 | if (!req->self) |
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302 | { |
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303 | req->self = (SV *)newHV (); |
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304 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
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305 | } |
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306 | |
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307 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
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308 | } |
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309 | |
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310 | static aio_req SvAIO_REQ (SV *sv) |
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311 | { |
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312 | MAGIC *mg; |
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313 | |
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314 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
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315 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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316 | |
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317 | mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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318 | |
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319 | return mg ? (aio_req)mg->mg_ptr : 0; |
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320 | } |
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321 | |
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322 | static void aio_grp_feed (aio_req grp) |
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323 | { |
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324 | while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED)) |
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325 | { |
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326 | int old_len = grp->length; |
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327 | |
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328 | if (grp->fh2 && SvOK (grp->fh2)) |
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329 | { |
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330 | dSP; |
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331 | |
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332 | ENTER; |
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333 | SAVETMPS; |
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334 | PUSHMARK (SP); |
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335 | XPUSHs (req_sv (grp, AIO_GRP_KLASS)); |
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336 | PUTBACK; |
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337 | call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR); |
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338 | SPAGAIN; |
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339 | FREETMPS; |
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340 | LEAVE; |
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341 | } |
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342 | |
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343 | /* stop if no progress has been made */ |
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344 | if (old_len == grp->length) |
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345 | { |
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346 | SvREFCNT_dec (grp->fh2); |
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347 | grp->fh2 = 0; |
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348 | break; |
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349 | } |
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350 | } |
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351 | } |
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352 | |
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353 | static void aio_grp_dec (aio_req grp) |
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354 | { |
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355 | --grp->length; |
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356 | |
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357 | /* call feeder, if applicable */ |
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358 | aio_grp_feed (grp); |
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359 | |
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360 | /* finish, if done */ |
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361 | if (!grp->length && grp->fd) |
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362 | { |
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363 | req_invoke (grp); |
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364 | req_free (grp); |
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365 | } |
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366 | } |
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367 | |
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368 | static void req_invoke (aio_req req) |
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369 | { |
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370 | dSP; |
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371 | |
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372 | if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback)) |
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373 | { |
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374 | ENTER; |
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375 | SAVETMPS; |
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376 | PUSHMARK (SP); |
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377 | EXTEND (SP, 1); |
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378 | |
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379 | switch (req->type) |
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380 | { |
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381 | case REQ_READDIR: |
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382 | { |
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383 | SV *rv = &PL_sv_undef; |
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384 | |
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385 | if (req->result >= 0) |
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386 | { |
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387 | int i; |
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388 | char *buf = req->data2ptr; |
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389 | AV *av = newAV (); |
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390 | |
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391 | av_extend (av, req->result - 1); |
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392 | |
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393 | for (i = 0; i < req->result; ++i) |
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394 | { |
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395 | SV *sv = newSVpv (buf, 0); |
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396 | |
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397 | av_store (av, i, sv); |
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398 | buf += SvCUR (sv) + 1; |
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399 | } |
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400 | |
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401 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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402 | } |
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403 | |
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404 | PUSHs (rv); |
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405 | } |
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406 | break; |
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407 | |
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408 | case REQ_OPEN: |
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409 | { |
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410 | /* convert fd to fh */ |
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411 | SV *fh; |
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412 | |
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413 | PUSHs (sv_2mortal (newSViv (req->result))); |
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414 | PUTBACK; |
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415 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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416 | SPAGAIN; |
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417 | |
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418 | fh = SvREFCNT_inc (POPs); |
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419 | |
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420 | PUSHMARK (SP); |
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421 | XPUSHs (sv_2mortal (fh)); |
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422 | } |
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423 | break; |
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424 | |
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425 | case REQ_GROUP: |
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426 | req->fd = 2; /* mark group as finished */ |
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427 | |
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428 | if (req->data) |
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429 | { |
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430 | int i; |
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431 | AV *av = (AV *)req->data; |
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432 | |
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433 | EXTEND (SP, AvFILL (av) + 1); |
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434 | for (i = 0; i <= AvFILL (av); ++i) |
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435 | PUSHs (*av_fetch (av, i, 0)); |
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436 | } |
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437 | break; |
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438 | |
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439 | case REQ_NOP: |
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440 | case REQ_BUSY: |
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441 | break; |
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442 | |
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443 | default: |
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444 | PUSHs (sv_2mortal (newSViv (req->result))); |
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445 | break; |
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446 | } |
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447 | |
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448 | errno = req->errorno; |
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449 | |
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450 | PUTBACK; |
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451 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
452 | SPAGAIN; |
|
|
453 | |
|
|
454 | FREETMPS; |
|
|
455 | LEAVE; |
|
|
456 | } |
|
|
457 | |
|
|
458 | if (req->grp) |
|
|
459 | { |
|
|
460 | aio_req grp = req->grp; |
|
|
461 | |
|
|
462 | /* unlink request */ |
|
|
463 | if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; |
|
|
464 | if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; |
|
|
465 | |
|
|
466 | if (grp->grp_first == req) |
|
|
467 | grp->grp_first = req->grp_next; |
|
|
468 | |
|
|
469 | aio_grp_dec (grp); |
|
|
470 | } |
|
|
471 | |
|
|
472 | if (SvTRUE (ERRSV)) |
|
|
473 | { |
|
|
474 | req_free (req); |
|
|
475 | croak (0); |
|
|
476 | } |
|
|
477 | } |
|
|
478 | |
|
|
479 | static void req_free (aio_req req) |
|
|
480 | { |
|
|
481 | if (req->self) |
|
|
482 | { |
|
|
483 | sv_unmagic (req->self, PERL_MAGIC_ext); |
|
|
484 | SvREFCNT_dec (req->self); |
|
|
485 | } |
|
|
486 | |
|
|
487 | SvREFCNT_dec (req->data); |
|
|
488 | SvREFCNT_dec (req->fh); |
|
|
489 | SvREFCNT_dec (req->fh2); |
|
|
490 | SvREFCNT_dec (req->callback); |
|
|
491 | Safefree (req->statdata); |
|
|
492 | |
|
|
493 | if (req->type == REQ_READDIR) |
|
|
494 | free (req->data2ptr); |
|
|
495 | |
|
|
496 | Safefree (req); |
|
|
497 | } |
|
|
498 | |
|
|
499 | static void req_cancel_subs (aio_req grp) |
|
|
500 | { |
|
|
501 | aio_req sub; |
|
|
502 | |
|
|
503 | if (grp->type != REQ_GROUP) |
|
|
504 | return; |
|
|
505 | |
|
|
506 | SvREFCNT_dec (grp->fh2); |
|
|
507 | grp->fh2 = 0; |
|
|
508 | |
|
|
509 | for (sub = grp->grp_first; sub; sub = sub->grp_next) |
|
|
510 | req_cancel (sub); |
|
|
511 | } |
|
|
512 | |
|
|
513 | static void req_cancel (aio_req req) |
|
|
514 | { |
|
|
515 | req->flags |= FLAG_CANCELLED; |
|
|
516 | |
|
|
517 | req_cancel_subs (req); |
|
|
518 | } |
63 | |
519 | |
64 | static void *aio_proc(void *arg); |
520 | static void *aio_proc(void *arg); |
65 | |
521 | |
66 | static void |
|
|
67 | start_thread (void) |
522 | static void start_thread (void) |
68 | { |
523 | { |
69 | sigset_t fullsigset, oldsigset; |
524 | sigset_t fullsigset, oldsigset; |
70 | pthread_t tid; |
|
|
71 | pthread_attr_t attr; |
525 | pthread_attr_t attr; |
|
|
526 | |
|
|
527 | worker *wrk = calloc (1, sizeof (worker)); |
|
|
528 | |
|
|
529 | if (!wrk) |
|
|
530 | croak ("unable to allocate worker thread data"); |
72 | |
531 | |
73 | pthread_attr_init (&attr); |
532 | pthread_attr_init (&attr); |
74 | pthread_attr_setstacksize (&attr, STACKSIZE); |
533 | pthread_attr_setstacksize (&attr, STACKSIZE); |
75 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
534 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
|
|
535 | #ifdef PTHREAD_SCOPE_PROCESS |
|
|
536 | pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
|
|
537 | #endif |
76 | |
538 | |
77 | sigfillset (&fullsigset); |
539 | sigfillset (&fullsigset); |
|
|
540 | |
|
|
541 | LOCK (wrklock); |
78 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
542 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
79 | |
543 | |
80 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
544 | if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
|
|
545 | { |
|
|
546 | wrk->prev = &wrk_first; |
|
|
547 | wrk->next = wrk_first.next; |
|
|
548 | wrk_first.next->prev = wrk; |
|
|
549 | wrk_first.next = wrk; |
81 | started++; |
550 | ++started; |
|
|
551 | } |
|
|
552 | else |
|
|
553 | free (wrk); |
82 | |
554 | |
83 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
555 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
556 | UNLOCK (wrklock); |
84 | } |
557 | } |
85 | |
558 | |
86 | static void |
559 | static void maybe_start_thread () |
87 | send_reqs (void) |
|
|
88 | { |
560 | { |
89 | /* this write is atomic */ |
561 | #if 0 |
90 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
562 | static struct timeval last; |
|
|
563 | struct timeval diff, now; |
|
|
564 | #endif |
|
|
565 | |
|
|
566 | if (started >= wanted) |
|
|
567 | return; |
|
|
568 | |
|
|
569 | if (nready <= nreqs - get_nready () - get_npending ()) |
|
|
570 | return; |
|
|
571 | |
|
|
572 | #if 0 |
|
|
573 | gettimeofday (&now, 0); |
|
|
574 | |
|
|
575 | diff.tv_sec = now.tv_sec - last.tv_sec; |
|
|
576 | diff.tv_usec = now.tv_usec - last.tv_usec; |
|
|
577 | |
|
|
578 | if (diff.tv_usec < 0) |
91 | { |
579 | { |
92 | qs = qs->next; |
580 | --diff.tv_sec; |
93 | if (!qs) qe = 0; |
581 | diff.tv_usec += 1000000; |
94 | } |
582 | } |
95 | } |
|
|
96 | |
583 | |
97 | static void |
584 | if (!diff.tv_sec && diff.tv_usec < 10000) |
98 | send_req (aio_req req) |
585 | return; |
|
|
586 | |
|
|
587 | last = now; |
|
|
588 | #endif |
|
|
589 | |
|
|
590 | start_thread (); |
|
|
591 | } |
|
|
592 | |
|
|
593 | static void req_send (aio_req req) |
99 | { |
594 | { |
100 | nreqs++; |
595 | ++nreqs; |
101 | req->next = 0; |
|
|
102 | |
596 | |
103 | if (qe) |
597 | LOCK (reqlock); |
104 | { |
598 | ++nready; |
105 | qe->next = req; |
599 | reqq_push (&req_queue, req); |
106 | qe = req; |
600 | pthread_cond_signal (&reqwait); |
107 | } |
601 | UNLOCK (reqlock); |
108 | else |
|
|
109 | qe = qs = req; |
|
|
110 | |
602 | |
111 | send_reqs (); |
603 | maybe_start_thread (); |
112 | } |
604 | } |
113 | |
605 | |
114 | static void |
606 | static void end_thread (void) |
115 | end_thread (void) |
|
|
116 | { |
607 | { |
117 | aio_req req; |
608 | aio_req req; |
|
|
609 | |
118 | New (0, req, 1, aio_cb); |
610 | Newz (0, req, 1, aio_cb); |
|
|
611 | |
119 | req->type = REQ_QUIT; |
612 | req->type = REQ_QUIT; |
|
|
613 | req->pri = PRI_MAX + PRI_BIAS; |
120 | |
614 | |
121 | send_req (req); |
615 | req_send (req); |
122 | } |
|
|
123 | |
616 | |
124 | static void |
617 | LOCK (wrklock); |
125 | read_write (pTHX_ |
618 | --started; |
126 | int dowrite, int fd, off_t offset, size_t length, |
619 | UNLOCK (wrklock); |
127 | SV *data, STRLEN dataoffset, SV *callback) |
|
|
128 | { |
|
|
129 | aio_req req; |
|
|
130 | STRLEN svlen; |
|
|
131 | char *svptr = SvPV (data, svlen); |
|
|
132 | |
|
|
133 | SvUPGRADE (data, SVt_PV); |
|
|
134 | SvPOK_on (data); |
|
|
135 | |
|
|
136 | if (dataoffset < 0) |
|
|
137 | dataoffset += svlen; |
|
|
138 | |
|
|
139 | if (dataoffset < 0 || dataoffset > svlen) |
|
|
140 | croak ("data offset outside of string"); |
|
|
141 | |
|
|
142 | if (dowrite) |
|
|
143 | { |
|
|
144 | /* write: check length and adjust. */ |
|
|
145 | if (length < 0 || length + dataoffset > svlen) |
|
|
146 | length = svlen - dataoffset; |
|
|
147 | } |
|
|
148 | else |
|
|
149 | { |
|
|
150 | /* read: grow scalar as necessary */ |
|
|
151 | svptr = SvGROW (data, length + dataoffset); |
|
|
152 | } |
|
|
153 | |
|
|
154 | if (length < 0) |
|
|
155 | croak ("length must not be negative"); |
|
|
156 | |
|
|
157 | Newz (0, req, 1, aio_cb); |
|
|
158 | |
|
|
159 | if (!req) |
|
|
160 | croak ("out of memory during aio_req allocation"); |
|
|
161 | |
|
|
162 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
|
|
163 | req->fd = fd; |
|
|
164 | req->offset = offset; |
|
|
165 | req->length = length; |
|
|
166 | req->data = SvREFCNT_inc (data); |
|
|
167 | req->dataptr = (char *)svptr + dataoffset; |
|
|
168 | req->callback = SvREFCNT_inc (callback); |
|
|
169 | |
|
|
170 | send_req (req); |
|
|
171 | } |
620 | } |
172 | |
621 | |
173 | static void |
622 | static void min_parallel (int nthreads) |
174 | poll_wait () |
623 | { |
|
|
624 | if (wanted < nthreads) |
|
|
625 | wanted = nthreads; |
|
|
626 | } |
|
|
627 | |
|
|
628 | static void max_parallel (int nthreads) |
|
|
629 | { |
|
|
630 | if (wanted > nthreads) |
|
|
631 | wanted = nthreads; |
|
|
632 | |
|
|
633 | while (started > wanted) |
|
|
634 | end_thread (); |
|
|
635 | } |
|
|
636 | |
|
|
637 | static void poll_wait () |
175 | { |
638 | { |
176 | fd_set rfd; |
639 | fd_set rfd; |
|
|
640 | |
|
|
641 | while (nreqs) |
|
|
642 | { |
|
|
643 | int size; |
|
|
644 | if (WORDREAD_UNSAFE) LOCK (reslock); |
|
|
645 | size = res_queue.size; |
|
|
646 | if (WORDREAD_UNSAFE) UNLOCK (reslock); |
|
|
647 | |
|
|
648 | if (size) |
|
|
649 | return; |
|
|
650 | |
|
|
651 | maybe_start_thread (); |
|
|
652 | |
177 | FD_ZERO(&rfd); |
653 | FD_ZERO(&rfd); |
178 | FD_SET(respipe[0], &rfd); |
654 | FD_SET(respipe [0], &rfd); |
179 | |
655 | |
180 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
656 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
|
|
657 | } |
181 | } |
658 | } |
182 | |
659 | |
183 | static int |
660 | static int poll_cb (int max) |
184 | poll_cb (pTHX) |
|
|
185 | { |
661 | { |
186 | dSP; |
662 | dSP; |
187 | int count = 0; |
663 | int count = 0; |
|
|
664 | int do_croak = 0; |
188 | aio_req req; |
665 | aio_req req; |
189 | |
666 | |
190 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
667 | for (;;) |
191 | { |
668 | { |
192 | nreqs--; |
669 | while (max <= 0 || count < max) |
193 | |
|
|
194 | if (req->type == REQ_QUIT) |
|
|
195 | started--; |
|
|
196 | else |
|
|
197 | { |
670 | { |
198 | int errorno = errno; |
671 | maybe_start_thread (); |
199 | errno = req->errorno; |
|
|
200 | |
672 | |
201 | if (req->type == REQ_READ) |
673 | LOCK (reslock); |
202 | SvCUR_set (req->data, req->dataoffset |
674 | req = reqq_shift (&res_queue); |
203 | + req->result > 0 ? req->result : 0); |
|
|
204 | |
675 | |
205 | if (req->data) |
676 | if (req) |
206 | SvREFCNT_dec (req->data); |
|
|
207 | |
|
|
208 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
|
|
209 | { |
677 | { |
210 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
678 | --npending; |
211 | PL_laststatval = req->result; |
|
|
212 | PL_statcache = *(req->statdata); |
|
|
213 | |
679 | |
214 | Safefree (req->statdata); |
680 | if (!res_queue.size) |
|
|
681 | { |
|
|
682 | /* read any signals sent by the worker threads */ |
|
|
683 | char buf [32]; |
|
|
684 | while (read (respipe [0], buf, 32) == 32) |
|
|
685 | ; |
|
|
686 | } |
215 | } |
687 | } |
216 | |
688 | |
217 | PUSHMARK (SP); |
689 | UNLOCK (reslock); |
218 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
219 | |
690 | |
|
|
691 | if (!req) |
|
|
692 | break; |
|
|
693 | |
|
|
694 | --nreqs; |
|
|
695 | |
220 | if (req->type == REQ_OPEN) |
696 | if (req->type == REQ_GROUP && req->length) |
221 | { |
697 | { |
222 | /* convert fd to fh */ |
698 | req->fd = 1; /* mark request as delayed */ |
223 | SV *fh; |
699 | continue; |
224 | |
|
|
225 | PUTBACK; |
|
|
226 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
227 | SPAGAIN; |
|
|
228 | |
|
|
229 | fh = POPs; |
|
|
230 | |
|
|
231 | PUSHMARK (SP); |
|
|
232 | XPUSHs (fh); |
|
|
233 | } |
700 | } |
|
|
701 | else |
|
|
702 | { |
|
|
703 | if (req->type == REQ_READ) |
|
|
704 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
234 | |
705 | |
235 | PUTBACK; |
706 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
236 | call_sv (req->callback, G_VOID | G_EVAL); |
707 | SvREADONLY_off (req->data); |
237 | SPAGAIN; |
708 | |
|
|
709 | if (req->statdata) |
|
|
710 | { |
|
|
711 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
|
|
712 | PL_laststatval = req->result; |
|
|
713 | PL_statcache = *(req->statdata); |
|
|
714 | } |
|
|
715 | |
|
|
716 | req_invoke (req); |
|
|
717 | |
|
|
718 | count++; |
|
|
719 | } |
|
|
720 | |
|
|
721 | req_free (req); |
|
|
722 | } |
|
|
723 | |
|
|
724 | if (nreqs <= max_outstanding) |
|
|
725 | break; |
|
|
726 | |
|
|
727 | poll_wait (); |
|
|
728 | |
|
|
729 | max = 0; |
|
|
730 | } |
|
|
731 | |
|
|
732 | return count; |
|
|
733 | } |
|
|
734 | |
|
|
735 | static void create_pipe () |
|
|
736 | { |
|
|
737 | if (pipe (respipe)) |
|
|
738 | croak ("unable to initialize result pipe"); |
|
|
739 | |
|
|
740 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
741 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
742 | |
|
|
743 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
744 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
745 | } |
|
|
746 | |
|
|
747 | /*****************************************************************************/ |
|
|
748 | /* work around various missing functions */ |
|
|
749 | |
|
|
750 | #if !HAVE_PREADWRITE |
|
|
751 | # define pread aio_pread |
|
|
752 | # define pwrite aio_pwrite |
|
|
753 | |
|
|
754 | /* |
|
|
755 | * make our pread/pwrite safe against themselves, but not against |
|
|
756 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
757 | * but that's your problem, not mine. |
|
|
758 | */ |
|
|
759 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
|
|
760 | |
|
|
761 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
|
|
762 | { |
|
|
763 | ssize_t res; |
|
|
764 | off_t ooffset; |
|
|
765 | |
|
|
766 | LOCK (preadwritelock); |
|
|
767 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
768 | lseek (fd, offset, SEEK_SET); |
|
|
769 | res = read (fd, buf, count); |
|
|
770 | lseek (fd, ooffset, SEEK_SET); |
|
|
771 | UNLOCK (preadwritelock); |
|
|
772 | |
|
|
773 | return res; |
|
|
774 | } |
|
|
775 | |
|
|
776 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
777 | { |
|
|
778 | ssize_t res; |
|
|
779 | off_t ooffset; |
|
|
780 | |
|
|
781 | LOCK (preadwritelock); |
|
|
782 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
783 | lseek (fd, offset, SEEK_SET); |
|
|
784 | res = write (fd, buf, count); |
|
|
785 | lseek (fd, offset, SEEK_SET); |
|
|
786 | UNLOCK (preadwritelock); |
|
|
787 | |
|
|
788 | return res; |
|
|
789 | } |
|
|
790 | #endif |
|
|
791 | |
|
|
792 | #if !HAVE_FDATASYNC |
|
|
793 | # define fdatasync fsync |
|
|
794 | #endif |
|
|
795 | |
|
|
796 | #if !HAVE_READAHEAD |
|
|
797 | # define readahead(fd,offset,count) aio_readahead (fd, offset, count, self) |
|
|
798 | |
|
|
799 | static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self) |
|
|
800 | { |
|
|
801 | dBUF; |
|
|
802 | |
|
|
803 | while (count > 0) |
|
|
804 | { |
|
|
805 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
|
|
806 | |
|
|
807 | pread (fd, aio_buf, len, offset); |
|
|
808 | offset += len; |
|
|
809 | count -= len; |
|
|
810 | } |
|
|
811 | |
|
|
812 | errno = 0; |
|
|
813 | } |
|
|
814 | |
|
|
815 | #endif |
|
|
816 | |
|
|
817 | #if !HAVE_READDIR_R |
|
|
818 | # define readdir_r aio_readdir_r |
|
|
819 | |
|
|
820 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
|
821 | |
|
|
822 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
823 | { |
|
|
824 | struct dirent *e; |
|
|
825 | int errorno; |
|
|
826 | |
|
|
827 | LOCK (readdirlock); |
|
|
828 | |
|
|
829 | e = readdir (dirp); |
|
|
830 | errorno = errno; |
|
|
831 | |
|
|
832 | if (e) |
|
|
833 | { |
|
|
834 | *res = ent; |
|
|
835 | strcpy (ent->d_name, e->d_name); |
|
|
836 | } |
|
|
837 | else |
|
|
838 | *res = 0; |
|
|
839 | |
|
|
840 | UNLOCK (readdirlock); |
|
|
841 | |
|
|
842 | errno = errorno; |
|
|
843 | return e ? 0 : -1; |
|
|
844 | } |
|
|
845 | #endif |
|
|
846 | |
|
|
847 | /* sendfile always needs emulation */ |
|
|
848 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self) |
|
|
849 | { |
|
|
850 | ssize_t res; |
|
|
851 | |
|
|
852 | if (!count) |
|
|
853 | return 0; |
|
|
854 | |
|
|
855 | #if HAVE_SENDFILE |
|
|
856 | # if __linux |
|
|
857 | res = sendfile (ofd, ifd, &offset, count); |
|
|
858 | |
|
|
859 | # elif __freebsd |
|
|
860 | /* |
|
|
861 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
862 | * wasted on making it similar to other I/O functions. |
|
|
863 | */ |
|
|
864 | { |
|
|
865 | off_t sbytes; |
|
|
866 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
867 | |
|
|
868 | if (res < 0 && sbytes) |
|
|
869 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
|
|
870 | res = sbytes; |
|
|
871 | } |
|
|
872 | |
|
|
873 | # elif __hpux |
|
|
874 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
875 | |
|
|
876 | # elif __solaris |
|
|
877 | { |
|
|
878 | struct sendfilevec vec; |
|
|
879 | size_t sbytes; |
|
|
880 | |
|
|
881 | vec.sfv_fd = ifd; |
|
|
882 | vec.sfv_flag = 0; |
|
|
883 | vec.sfv_off = offset; |
|
|
884 | vec.sfv_len = count; |
|
|
885 | |
|
|
886 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
887 | |
|
|
888 | if (res < 0 && sbytes) |
|
|
889 | res = sbytes; |
|
|
890 | } |
|
|
891 | |
|
|
892 | # endif |
|
|
893 | #else |
|
|
894 | res = -1; |
|
|
895 | errno = ENOSYS; |
|
|
896 | #endif |
|
|
897 | |
|
|
898 | if (res < 0 |
|
|
899 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
900 | #if __solaris |
|
|
901 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
902 | #endif |
|
|
903 | ) |
|
|
904 | ) |
|
|
905 | { |
|
|
906 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
907 | dBUF; |
|
|
908 | |
|
|
909 | res = 0; |
|
|
910 | |
|
|
911 | while (count) |
|
|
912 | { |
|
|
913 | ssize_t cnt; |
238 | |
914 | |
239 | if (req->callback) |
915 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
240 | SvREFCNT_dec (req->callback); |
|
|
241 | |
916 | |
242 | errno = errorno; |
917 | if (cnt <= 0) |
|
|
918 | { |
|
|
919 | if (cnt && !res) res = -1; |
|
|
920 | break; |
|
|
921 | } |
|
|
922 | |
|
|
923 | cnt = write (ofd, aio_buf, cnt); |
|
|
924 | |
|
|
925 | if (cnt <= 0) |
|
|
926 | { |
|
|
927 | if (cnt && !res) res = -1; |
|
|
928 | break; |
|
|
929 | } |
|
|
930 | |
|
|
931 | offset += cnt; |
|
|
932 | res += cnt; |
243 | count++; |
933 | count -= cnt; |
244 | } |
934 | } |
|
|
935 | } |
245 | |
936 | |
246 | Safefree (req); |
937 | return res; |
|
|
938 | } |
|
|
939 | |
|
|
940 | /* read a full directory */ |
|
|
941 | static void scandir_ (aio_req req, worker *self) |
|
|
942 | { |
|
|
943 | DIR *dirp; |
|
|
944 | union |
|
|
945 | { |
|
|
946 | struct dirent d; |
|
|
947 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
948 | } *u; |
|
|
949 | struct dirent *entp; |
|
|
950 | char *name, *names; |
|
|
951 | int memlen = 4096; |
|
|
952 | int memofs = 0; |
|
|
953 | int res = 0; |
|
|
954 | int errorno; |
|
|
955 | |
|
|
956 | LOCK (wrklock); |
|
|
957 | self->dirp = dirp = opendir (req->dataptr); |
|
|
958 | self->dbuf = u = malloc (sizeof (*u)); |
|
|
959 | req->data2ptr = names = malloc (memlen); |
|
|
960 | UNLOCK (wrklock); |
|
|
961 | |
|
|
962 | if (dirp && u && names) |
|
|
963 | for (;;) |
|
|
964 | { |
|
|
965 | errno = 0; |
|
|
966 | readdir_r (dirp, &u->d, &entp); |
|
|
967 | |
|
|
968 | if (!entp) |
|
|
969 | break; |
|
|
970 | |
|
|
971 | name = entp->d_name; |
|
|
972 | |
|
|
973 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
974 | { |
|
|
975 | int len = strlen (name) + 1; |
|
|
976 | |
|
|
977 | res++; |
|
|
978 | |
|
|
979 | while (memofs + len > memlen) |
|
|
980 | { |
|
|
981 | memlen *= 2; |
|
|
982 | LOCK (wrklock); |
|
|
983 | req->data2ptr = names = realloc (names, memlen); |
|
|
984 | UNLOCK (wrklock); |
|
|
985 | |
|
|
986 | if (!names) |
|
|
987 | break; |
|
|
988 | } |
|
|
989 | |
|
|
990 | memcpy (names + memofs, name, len); |
|
|
991 | memofs += len; |
|
|
992 | } |
247 | } |
993 | } |
248 | |
994 | |
249 | if (qs) |
995 | if (errno) |
250 | send_reqs (); |
996 | res = -1; |
251 | |
997 | |
252 | return count; |
998 | req->result = res; |
253 | } |
999 | } |
254 | |
1000 | |
255 | static void * |
1001 | /*****************************************************************************/ |
|
|
1002 | |
256 | aio_proc (void *thr_arg) |
1003 | static void *aio_proc (void *thr_arg) |
257 | { |
1004 | { |
258 | aio_req req; |
1005 | aio_req req; |
|
|
1006 | worker *self = (worker *)thr_arg; |
259 | |
1007 | |
260 | /* then loop */ |
1008 | for (;;) |
261 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
1009 | { |
|
|
1010 | LOCK (reqlock); |
|
|
1011 | |
|
|
1012 | for (;;) |
|
|
1013 | { |
|
|
1014 | self->req = req = reqq_shift (&req_queue); |
|
|
1015 | |
|
|
1016 | if (req) |
|
|
1017 | break; |
|
|
1018 | |
|
|
1019 | pthread_cond_wait (&reqwait, &reqlock); |
|
|
1020 | } |
|
|
1021 | |
|
|
1022 | --nready; |
|
|
1023 | |
|
|
1024 | UNLOCK (reqlock); |
262 | { |
1025 | |
263 | errno = 0; /* strictly unnecessary */ |
1026 | errno = 0; /* strictly unnecessary */ |
264 | |
1027 | |
|
|
1028 | if (!(req->flags & FLAG_CANCELLED)) |
265 | switch (req->type) |
1029 | switch (req->type) |
266 | { |
1030 | { |
267 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
1031 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
268 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
1032 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
269 | #if SYS_readahead |
1033 | |
270 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
1034 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
271 | #else |
1035 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break; |
272 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
273 | #endif |
|
|
274 | |
1036 | |
275 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
1037 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
276 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
1038 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
277 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
1039 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
278 | |
1040 | |
279 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
1041 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
280 | case REQ_CLOSE: req->result = close (req->fd); break; |
1042 | case REQ_CLOSE: req->result = close (req->fd); break; |
281 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
1043 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
282 | |
|
|
283 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
1044 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
1045 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
|
|
1046 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
|
|
1047 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
|
|
1048 | |
284 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
1049 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
1050 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
1051 | case REQ_READDIR: scandir_ (req, self); break; |
285 | |
1052 | |
|
|
1053 | case REQ_BUSY: |
|
|
1054 | { |
|
|
1055 | struct timeval tv; |
|
|
1056 | |
|
|
1057 | tv.tv_sec = req->fd; |
|
|
1058 | tv.tv_usec = req->fd2; |
|
|
1059 | |
|
|
1060 | req->result = select (0, 0, 0, 0, &tv); |
|
|
1061 | } |
|
|
1062 | |
|
|
1063 | case REQ_GROUP: |
|
|
1064 | case REQ_NOP: |
|
|
1065 | break; |
|
|
1066 | |
286 | case REQ_QUIT: |
1067 | case REQ_QUIT: |
287 | write (respipe[1], (void *)&req, sizeof (req)); |
1068 | LOCK (wrklock); |
288 | return 0; |
1069 | worker_free (self); |
|
|
1070 | --started; |
|
|
1071 | UNLOCK (wrklock); |
|
|
1072 | return 0; |
289 | |
1073 | |
290 | default: |
1074 | default: |
291 | req->result = ENOSYS; |
1075 | req->result = ENOSYS; |
292 | break; |
1076 | break; |
293 | } |
1077 | } |
294 | |
1078 | |
295 | req->errorno = errno; |
1079 | req->errorno = errno; |
296 | write (respipe[1], (void *)&req, sizeof (req)); |
1080 | |
|
|
1081 | LOCK (reslock); |
|
|
1082 | |
|
|
1083 | ++npending; |
|
|
1084 | |
|
|
1085 | if (!reqq_push (&res_queue, req)) |
|
|
1086 | /* write a dummy byte to the pipe so fh becomes ready */ |
|
|
1087 | write (respipe [1], &respipe, 1); |
|
|
1088 | |
|
|
1089 | self->req = 0; |
|
|
1090 | worker_clear (self); |
|
|
1091 | |
|
|
1092 | UNLOCK (reslock); |
|
|
1093 | } |
|
|
1094 | } |
|
|
1095 | |
|
|
1096 | /*****************************************************************************/ |
|
|
1097 | |
|
|
1098 | static void atfork_prepare (void) |
|
|
1099 | { |
|
|
1100 | LOCK (wrklock); |
|
|
1101 | LOCK (reqlock); |
|
|
1102 | LOCK (reslock); |
|
|
1103 | #if !HAVE_PREADWRITE |
|
|
1104 | LOCK (preadwritelock); |
|
|
1105 | #endif |
|
|
1106 | #if !HAVE_READDIR_R |
|
|
1107 | LOCK (readdirlock); |
|
|
1108 | #endif |
|
|
1109 | } |
|
|
1110 | |
|
|
1111 | static void atfork_parent (void) |
|
|
1112 | { |
|
|
1113 | #if !HAVE_READDIR_R |
|
|
1114 | UNLOCK (readdirlock); |
|
|
1115 | #endif |
|
|
1116 | #if !HAVE_PREADWRITE |
|
|
1117 | UNLOCK (preadwritelock); |
|
|
1118 | #endif |
|
|
1119 | UNLOCK (reslock); |
|
|
1120 | UNLOCK (reqlock); |
|
|
1121 | UNLOCK (wrklock); |
|
|
1122 | } |
|
|
1123 | |
|
|
1124 | static void atfork_child (void) |
|
|
1125 | { |
|
|
1126 | aio_req prv; |
|
|
1127 | |
|
|
1128 | while (prv = reqq_shift (&req_queue)) |
|
|
1129 | req_free (prv); |
|
|
1130 | |
|
|
1131 | while (prv = reqq_shift (&res_queue)) |
|
|
1132 | req_free (prv); |
|
|
1133 | |
|
|
1134 | while (wrk_first.next != &wrk_first) |
297 | } |
1135 | { |
|
|
1136 | worker *wrk = wrk_first.next; |
298 | |
1137 | |
299 | return 0; |
1138 | if (wrk->req) |
300 | } |
1139 | req_free (wrk->req); |
301 | |
1140 | |
|
|
1141 | worker_clear (wrk); |
|
|
1142 | worker_free (wrk); |
|
|
1143 | } |
|
|
1144 | |
|
|
1145 | started = 0; |
|
|
1146 | nreqs = 0; |
|
|
1147 | |
|
|
1148 | close (respipe [0]); |
|
|
1149 | close (respipe [1]); |
|
|
1150 | create_pipe (); |
|
|
1151 | |
|
|
1152 | atfork_parent (); |
|
|
1153 | } |
|
|
1154 | |
|
|
1155 | #define dREQ \ |
|
|
1156 | aio_req req; \ |
|
|
1157 | int req_pri = next_pri; \ |
|
|
1158 | next_pri = DEFAULT_PRI + PRI_BIAS; \ |
|
|
1159 | \ |
|
|
1160 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
1161 | croak ("callback must be undef or of reference type"); \ |
|
|
1162 | \ |
|
|
1163 | Newz (0, req, 1, aio_cb); \ |
|
|
1164 | if (!req) \ |
|
|
1165 | croak ("out of memory during aio_req allocation"); \ |
|
|
1166 | \ |
|
|
1167 | req->callback = newSVsv (callback); \ |
|
|
1168 | req->pri = req_pri |
|
|
1169 | |
|
|
1170 | #define REQ_SEND \ |
|
|
1171 | req_send (req); \ |
|
|
1172 | \ |
|
|
1173 | if (GIMME_V != G_VOID) \ |
|
|
1174 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
|
|
1175 | |
302 | MODULE = IO::AIO PACKAGE = IO::AIO |
1176 | MODULE = IO::AIO PACKAGE = IO::AIO |
303 | |
1177 | |
|
|
1178 | PROTOTYPES: ENABLE |
|
|
1179 | |
304 | BOOT: |
1180 | BOOT: |
305 | { |
1181 | { |
306 | if (pipe (reqpipe) || pipe (respipe)) |
1182 | HV *stash = gv_stashpv ("IO::AIO", 1); |
307 | croak ("unable to initialize request or result pipe"); |
1183 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
|
|
1184 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
1185 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
308 | |
1186 | |
309 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
1187 | create_pipe (); |
310 | croak ("cannot set result pipe to nonblocking mode"); |
1188 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
311 | |
1189 | |
312 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
1190 | start_thread (); |
313 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
314 | } |
1191 | } |
315 | |
1192 | |
316 | void |
1193 | void |
317 | min_parallel(nthreads) |
1194 | min_parallel (int nthreads) |
318 | int nthreads |
1195 | PROTOTYPE: $ |
|
|
1196 | |
|
|
1197 | void |
|
|
1198 | max_parallel (int nthreads) |
|
|
1199 | PROTOTYPE: $ |
|
|
1200 | |
|
|
1201 | int |
|
|
1202 | max_outstanding (int maxreqs) |
319 | PROTOTYPE: $ |
1203 | PROTOTYPE: $ |
320 | CODE: |
1204 | CODE: |
321 | while (nthreads > started) |
1205 | RETVAL = max_outstanding; |
322 | start_thread (); |
1206 | max_outstanding = maxreqs; |
|
|
1207 | OUTPUT: |
|
|
1208 | RETVAL |
323 | |
1209 | |
324 | void |
1210 | void |
325 | max_parallel(nthreads) |
|
|
326 | int nthreads |
|
|
327 | PROTOTYPE: $ |
|
|
328 | CODE: |
|
|
329 | { |
|
|
330 | int cur = started; |
|
|
331 | while (cur > nthreads) |
|
|
332 | { |
|
|
333 | end_thread (); |
|
|
334 | cur--; |
|
|
335 | } |
|
|
336 | |
|
|
337 | while (started > nthreads) |
|
|
338 | { |
|
|
339 | poll_wait (); |
|
|
340 | poll_cb (aTHX); |
|
|
341 | } |
|
|
342 | } |
|
|
343 | |
|
|
344 | void |
|
|
345 | aio_open(pathname,flags,mode,callback) |
1211 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
346 | SV * pathname |
1212 | SV * pathname |
347 | int flags |
1213 | int flags |
348 | int mode |
1214 | int mode |
349 | SV * callback |
1215 | SV * callback |
350 | PROTOTYPE: $$$$ |
1216 | PROTOTYPE: $$$;$ |
351 | CODE: |
1217 | PPCODE: |
352 | { |
1218 | { |
353 | aio_req req; |
1219 | dREQ; |
354 | |
|
|
355 | Newz (0, req, 1, aio_cb); |
|
|
356 | |
|
|
357 | if (!req) |
|
|
358 | croak ("out of memory during aio_req allocation"); |
|
|
359 | |
1220 | |
360 | req->type = REQ_OPEN; |
1221 | req->type = REQ_OPEN; |
361 | req->data = newSVsv (pathname); |
1222 | req->data = newSVsv (pathname); |
362 | req->dataptr = SvPV_nolen (req->data); |
1223 | req->dataptr = SvPVbyte_nolen (req->data); |
363 | req->fd = flags; |
1224 | req->fd = flags; |
364 | req->mode = mode; |
1225 | req->mode = mode; |
365 | req->callback = SvREFCNT_inc (callback); |
|
|
366 | |
1226 | |
367 | send_req (req); |
1227 | REQ_SEND; |
368 | } |
1228 | } |
369 | |
1229 | |
370 | void |
1230 | void |
371 | aio_close(fh,callback) |
1231 | aio_close (fh,callback=&PL_sv_undef) |
372 | InputStream fh |
1232 | SV * fh |
373 | SV * callback |
1233 | SV * callback |
374 | PROTOTYPE: $$ |
1234 | PROTOTYPE: $;$ |
375 | ALIAS: |
1235 | ALIAS: |
376 | aio_close = REQ_CLOSE |
1236 | aio_close = REQ_CLOSE |
377 | aio_fsync = REQ_FSYNC |
1237 | aio_fsync = REQ_FSYNC |
378 | aio_fdatasync = REQ_FDATASYNC |
1238 | aio_fdatasync = REQ_FDATASYNC |
379 | CODE: |
1239 | PPCODE: |
|
|
1240 | { |
|
|
1241 | dREQ; |
|
|
1242 | |
|
|
1243 | req->type = ix; |
|
|
1244 | req->fh = newSVsv (fh); |
|
|
1245 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
1246 | |
|
|
1247 | REQ_SEND (req); |
|
|
1248 | } |
|
|
1249 | |
|
|
1250 | void |
|
|
1251 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
1252 | SV * fh |
|
|
1253 | UV offset |
|
|
1254 | UV length |
|
|
1255 | SV * data |
|
|
1256 | UV dataoffset |
|
|
1257 | SV * callback |
|
|
1258 | ALIAS: |
|
|
1259 | aio_read = REQ_READ |
|
|
1260 | aio_write = REQ_WRITE |
|
|
1261 | PROTOTYPE: $$$$$;$ |
|
|
1262 | PPCODE: |
380 | { |
1263 | { |
381 | aio_req req; |
1264 | aio_req req; |
|
|
1265 | STRLEN svlen; |
|
|
1266 | char *svptr = SvPVbyte (data, svlen); |
382 | |
1267 | |
383 | Newz (0, req, 1, aio_cb); |
1268 | SvUPGRADE (data, SVt_PV); |
|
|
1269 | SvPOK_on (data); |
384 | |
1270 | |
385 | if (!req) |
1271 | if (dataoffset < 0) |
386 | croak ("out of memory during aio_req allocation"); |
1272 | dataoffset += svlen; |
387 | |
1273 | |
388 | req->type = ix; |
1274 | if (dataoffset < 0 || dataoffset > svlen) |
389 | req->fd = PerlIO_fileno (fh); |
1275 | croak ("data offset outside of string"); |
390 | req->callback = SvREFCNT_inc (callback); |
|
|
391 | |
1276 | |
392 | send_req (req); |
1277 | if (ix == REQ_WRITE) |
393 | } |
1278 | { |
394 | |
1279 | /* write: check length and adjust. */ |
395 | void |
1280 | if (length < 0 || length + dataoffset > svlen) |
396 | aio_read(fh,offset,length,data,dataoffset,callback) |
1281 | length = svlen - dataoffset; |
397 | InputStream fh |
1282 | } |
398 | UV offset |
1283 | else |
399 | IV length |
1284 | { |
400 | SV * data |
1285 | /* read: grow scalar as necessary */ |
401 | IV dataoffset |
1286 | svptr = SvGROW (data, length + dataoffset); |
402 | SV * callback |
1287 | } |
403 | PROTOTYPE: $$$$$$ |
|
|
404 | CODE: |
|
|
405 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
406 | |
|
|
407 | void |
|
|
408 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
409 | OutputStream fh |
|
|
410 | UV offset |
|
|
411 | IV length |
|
|
412 | SV * data |
|
|
413 | IV dataoffset |
|
|
414 | SV * callback |
|
|
415 | PROTOTYPE: $$$$$$ |
|
|
416 | CODE: |
|
|
417 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
418 | |
|
|
419 | void |
|
|
420 | aio_readahead(fh,offset,length,callback) |
|
|
421 | InputStream fh |
|
|
422 | UV offset |
|
|
423 | IV length |
|
|
424 | SV * callback |
|
|
425 | PROTOTYPE: $$$$ |
|
|
426 | CODE: |
|
|
427 | { |
|
|
428 | aio_req req; |
|
|
429 | |
1288 | |
430 | if (length < 0) |
1289 | if (length < 0) |
431 | croak ("length must not be negative"); |
1290 | croak ("length must not be negative"); |
432 | |
1291 | |
433 | Newz (0, req, 1, aio_cb); |
1292 | { |
|
|
1293 | dREQ; |
434 | |
1294 | |
435 | if (!req) |
1295 | req->type = ix; |
436 | croak ("out of memory during aio_req allocation"); |
1296 | req->fh = newSVsv (fh); |
|
|
1297 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
1298 | : IoOFP (sv_2io (fh))); |
|
|
1299 | req->offset = offset; |
|
|
1300 | req->length = length; |
|
|
1301 | req->data = SvREFCNT_inc (data); |
|
|
1302 | req->dataptr = (char *)svptr + dataoffset; |
|
|
1303 | |
|
|
1304 | if (!SvREADONLY (data)) |
|
|
1305 | { |
|
|
1306 | SvREADONLY_on (data); |
|
|
1307 | req->data2ptr = (void *)data; |
|
|
1308 | } |
|
|
1309 | |
|
|
1310 | REQ_SEND; |
|
|
1311 | } |
|
|
1312 | } |
|
|
1313 | |
|
|
1314 | void |
|
|
1315 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
1316 | SV * out_fh |
|
|
1317 | SV * in_fh |
|
|
1318 | UV in_offset |
|
|
1319 | UV length |
|
|
1320 | SV * callback |
|
|
1321 | PROTOTYPE: $$$$;$ |
|
|
1322 | PPCODE: |
|
|
1323 | { |
|
|
1324 | dREQ; |
|
|
1325 | |
|
|
1326 | req->type = REQ_SENDFILE; |
|
|
1327 | req->fh = newSVsv (out_fh); |
|
|
1328 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1329 | req->fh2 = newSVsv (in_fh); |
|
|
1330 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1331 | req->offset = in_offset; |
|
|
1332 | req->length = length; |
|
|
1333 | |
|
|
1334 | REQ_SEND; |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | void |
|
|
1338 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
|
|
1339 | SV * fh |
|
|
1340 | UV offset |
|
|
1341 | IV length |
|
|
1342 | SV * callback |
|
|
1343 | PROTOTYPE: $$$;$ |
|
|
1344 | PPCODE: |
|
|
1345 | { |
|
|
1346 | dREQ; |
437 | |
1347 | |
438 | req->type = REQ_READAHEAD; |
1348 | req->type = REQ_READAHEAD; |
|
|
1349 | req->fh = newSVsv (fh); |
439 | req->fd = PerlIO_fileno (fh); |
1350 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
440 | req->offset = offset; |
1351 | req->offset = offset; |
441 | req->length = length; |
1352 | req->length = length; |
442 | req->callback = SvREFCNT_inc (callback); |
|
|
443 | |
1353 | |
444 | send_req (req); |
1354 | REQ_SEND; |
445 | } |
1355 | } |
446 | |
1356 | |
447 | void |
1357 | void |
448 | aio_stat(fh_or_path,callback) |
1358 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
449 | SV * fh_or_path |
1359 | SV * fh_or_path |
450 | SV * callback |
1360 | SV * callback |
451 | PROTOTYPE: $$ |
|
|
452 | ALIAS: |
1361 | ALIAS: |
|
|
1362 | aio_stat = REQ_STAT |
453 | aio_lstat = 1 |
1363 | aio_lstat = REQ_LSTAT |
454 | CODE: |
1364 | PPCODE: |
455 | { |
1365 | { |
456 | aio_req req; |
1366 | dREQ; |
457 | |
|
|
458 | Newz (0, req, 1, aio_cb); |
|
|
459 | |
|
|
460 | if (!req) |
|
|
461 | croak ("out of memory during aio_req allocation"); |
|
|
462 | |
1367 | |
463 | New (0, req->statdata, 1, Stat_t); |
1368 | New (0, req->statdata, 1, Stat_t); |
464 | |
|
|
465 | if (!req->statdata) |
1369 | if (!req->statdata) |
|
|
1370 | { |
|
|
1371 | req_free (req); |
466 | croak ("out of memory during aio_req->statdata allocation"); |
1372 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
1373 | } |
467 | |
1374 | |
468 | if (SvPOK (fh_or_path)) |
1375 | if (SvPOK (fh_or_path)) |
469 | { |
1376 | { |
470 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
1377 | req->type = ix; |
471 | req->data = newSVsv (fh_or_path); |
1378 | req->data = newSVsv (fh_or_path); |
472 | req->dataptr = SvPV_nolen (req->data); |
1379 | req->dataptr = SvPVbyte_nolen (req->data); |
473 | } |
1380 | } |
474 | else |
1381 | else |
475 | { |
1382 | { |
476 | req->type = REQ_FSTAT; |
1383 | req->type = REQ_FSTAT; |
|
|
1384 | req->fh = newSVsv (fh_or_path); |
477 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1385 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
478 | } |
1386 | } |
479 | |
1387 | |
480 | req->callback = SvREFCNT_inc (callback); |
1388 | REQ_SEND; |
481 | |
|
|
482 | send_req (req); |
|
|
483 | } |
1389 | } |
484 | |
1390 | |
485 | void |
1391 | void |
486 | aio_unlink(pathname,callback) |
1392 | aio_unlink (pathname,callback=&PL_sv_undef) |
487 | SV * pathname |
1393 | SV * pathname |
488 | SV * callback |
1394 | SV * callback |
|
|
1395 | ALIAS: |
|
|
1396 | aio_unlink = REQ_UNLINK |
|
|
1397 | aio_rmdir = REQ_RMDIR |
|
|
1398 | aio_readdir = REQ_READDIR |
|
|
1399 | PPCODE: |
|
|
1400 | { |
|
|
1401 | dREQ; |
|
|
1402 | |
|
|
1403 | req->type = ix; |
|
|
1404 | req->data = newSVsv (pathname); |
|
|
1405 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1406 | |
|
|
1407 | REQ_SEND; |
|
|
1408 | } |
|
|
1409 | |
|
|
1410 | void |
|
|
1411 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
|
|
1412 | SV * oldpath |
|
|
1413 | SV * newpath |
|
|
1414 | SV * callback |
|
|
1415 | ALIAS: |
|
|
1416 | aio_link = REQ_LINK |
|
|
1417 | aio_symlink = REQ_SYMLINK |
|
|
1418 | aio_rename = REQ_RENAME |
|
|
1419 | PPCODE: |
|
|
1420 | { |
|
|
1421 | dREQ; |
|
|
1422 | |
|
|
1423 | req->type = ix; |
|
|
1424 | req->fh = newSVsv (oldpath); |
|
|
1425 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
1426 | req->data = newSVsv (newpath); |
|
|
1427 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1428 | |
|
|
1429 | REQ_SEND; |
|
|
1430 | } |
|
|
1431 | |
|
|
1432 | void |
|
|
1433 | aio_busy (delay,callback=&PL_sv_undef) |
|
|
1434 | double delay |
|
|
1435 | SV * callback |
|
|
1436 | PPCODE: |
|
|
1437 | { |
|
|
1438 | dREQ; |
|
|
1439 | |
|
|
1440 | req->type = REQ_BUSY; |
|
|
1441 | req->fd = delay < 0. ? 0 : delay; |
|
|
1442 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1443 | |
|
|
1444 | REQ_SEND; |
|
|
1445 | } |
|
|
1446 | |
|
|
1447 | void |
|
|
1448 | aio_group (callback=&PL_sv_undef) |
|
|
1449 | SV * callback |
489 | PROTOTYPE: $$ |
1450 | PROTOTYPE: ;$ |
|
|
1451 | PPCODE: |
|
|
1452 | { |
|
|
1453 | dREQ; |
|
|
1454 | |
|
|
1455 | req->type = REQ_GROUP; |
|
|
1456 | req_send (req); |
|
|
1457 | |
|
|
1458 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1459 | } |
|
|
1460 | |
|
|
1461 | void |
|
|
1462 | aio_nop (callback=&PL_sv_undef) |
|
|
1463 | SV * callback |
|
|
1464 | PPCODE: |
|
|
1465 | { |
|
|
1466 | dREQ; |
|
|
1467 | |
|
|
1468 | req->type = REQ_NOP; |
|
|
1469 | |
|
|
1470 | REQ_SEND; |
|
|
1471 | } |
|
|
1472 | |
|
|
1473 | int |
|
|
1474 | aioreq_pri (int pri = 0) |
|
|
1475 | PROTOTYPE: ;$ |
490 | CODE: |
1476 | CODE: |
491 | { |
1477 | RETVAL = next_pri - PRI_BIAS; |
492 | aio_req req; |
1478 | if (items > 0) |
493 | |
1479 | { |
494 | Newz (0, req, 1, aio_cb); |
1480 | if (pri < PRI_MIN) pri = PRI_MIN; |
495 | |
1481 | if (pri > PRI_MAX) pri = PRI_MAX; |
496 | if (!req) |
1482 | next_pri = pri + PRI_BIAS; |
497 | croak ("out of memory during aio_req allocation"); |
1483 | } |
498 | |
1484 | OUTPUT: |
499 | req->type = REQ_UNLINK; |
1485 | RETVAL |
500 | req->data = newSVsv (pathname); |
1486 | |
501 | req->dataptr = SvPV_nolen (req->data); |
1487 | void |
502 | req->callback = SvREFCNT_inc (callback); |
1488 | aioreq_nice (int nice = 0) |
503 | |
1489 | CODE: |
504 | send_req (req); |
1490 | nice = next_pri - nice; |
505 | } |
1491 | if (nice < PRI_MIN) nice = PRI_MIN; |
|
|
1492 | if (nice > PRI_MAX) nice = PRI_MAX; |
|
|
1493 | next_pri = nice + PRI_BIAS; |
|
|
1494 | |
|
|
1495 | void |
|
|
1496 | flush () |
|
|
1497 | PROTOTYPE: |
|
|
1498 | CODE: |
|
|
1499 | while (nreqs) |
|
|
1500 | { |
|
|
1501 | poll_wait (); |
|
|
1502 | poll_cb (0); |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | void |
|
|
1506 | poll() |
|
|
1507 | PROTOTYPE: |
|
|
1508 | CODE: |
|
|
1509 | if (nreqs) |
|
|
1510 | { |
|
|
1511 | poll_wait (); |
|
|
1512 | poll_cb (0); |
|
|
1513 | } |
506 | |
1514 | |
507 | int |
1515 | int |
508 | poll_fileno() |
1516 | poll_fileno() |
509 | PROTOTYPE: |
1517 | PROTOTYPE: |
510 | CODE: |
1518 | CODE: |
511 | RETVAL = respipe[0]; |
1519 | RETVAL = respipe [0]; |
512 | OUTPUT: |
1520 | OUTPUT: |
513 | RETVAL |
1521 | RETVAL |
514 | |
1522 | |
515 | int |
1523 | int |
516 | poll_cb(...) |
1524 | poll_cb(...) |
517 | PROTOTYPE: |
1525 | PROTOTYPE: |
518 | CODE: |
1526 | CODE: |
|
|
1527 | RETVAL = poll_cb (0); |
|
|
1528 | OUTPUT: |
|
|
1529 | RETVAL |
|
|
1530 | |
|
|
1531 | int |
|
|
1532 | poll_some(int max = 0) |
|
|
1533 | PROTOTYPE: $ |
|
|
1534 | CODE: |
519 | RETVAL = poll_cb (aTHX); |
1535 | RETVAL = poll_cb (max); |
520 | OUTPUT: |
1536 | OUTPUT: |
521 | RETVAL |
1537 | RETVAL |
522 | |
1538 | |
523 | void |
1539 | void |
524 | poll_wait() |
1540 | poll_wait() |
525 | PROTOTYPE: |
1541 | PROTOTYPE: |
526 | CODE: |
1542 | CODE: |
|
|
1543 | if (nreqs) |
527 | poll_wait (); |
1544 | poll_wait (); |
528 | |
1545 | |
529 | int |
1546 | int |
530 | nreqs() |
1547 | nreqs() |
531 | PROTOTYPE: |
1548 | PROTOTYPE: |
532 | CODE: |
1549 | CODE: |
533 | RETVAL = nreqs; |
1550 | RETVAL = nreqs; |
534 | OUTPUT: |
1551 | OUTPUT: |
535 | RETVAL |
1552 | RETVAL |
536 | |
1553 | |
|
|
1554 | int |
|
|
1555 | nready() |
|
|
1556 | PROTOTYPE: |
|
|
1557 | CODE: |
|
|
1558 | RETVAL = get_nready (); |
|
|
1559 | OUTPUT: |
|
|
1560 | RETVAL |
|
|
1561 | |
|
|
1562 | int |
|
|
1563 | npending() |
|
|
1564 | PROTOTYPE: |
|
|
1565 | CODE: |
|
|
1566 | RETVAL = get_npending (); |
|
|
1567 | OUTPUT: |
|
|
1568 | RETVAL |
|
|
1569 | |
|
|
1570 | PROTOTYPES: DISABLE |
|
|
1571 | |
|
|
1572 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1573 | |
|
|
1574 | void |
|
|
1575 | cancel (aio_req_ornot req) |
|
|
1576 | CODE: |
|
|
1577 | req_cancel (req); |
|
|
1578 | |
|
|
1579 | void |
|
|
1580 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
|
|
1581 | CODE: |
|
|
1582 | SvREFCNT_dec (req->callback); |
|
|
1583 | req->callback = newSVsv (callback); |
|
|
1584 | |
|
|
1585 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1586 | |
|
|
1587 | void |
|
|
1588 | add (aio_req grp, ...) |
|
|
1589 | PPCODE: |
|
|
1590 | { |
|
|
1591 | int i; |
|
|
1592 | aio_req req; |
|
|
1593 | |
|
|
1594 | if (grp->fd == 2) |
|
|
1595 | croak ("cannot add requests to IO::AIO::GRP after the group finished"); |
|
|
1596 | |
|
|
1597 | for (i = 1; i < items; ++i ) |
|
|
1598 | { |
|
|
1599 | if (GIMME_V != G_VOID) |
|
|
1600 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1601 | |
|
|
1602 | req = SvAIO_REQ (ST (i)); |
|
|
1603 | |
|
|
1604 | if (req) |
|
|
1605 | { |
|
|
1606 | ++grp->length; |
|
|
1607 | req->grp = grp; |
|
|
1608 | |
|
|
1609 | req->grp_prev = 0; |
|
|
1610 | req->grp_next = grp->grp_first; |
|
|
1611 | |
|
|
1612 | if (grp->grp_first) |
|
|
1613 | grp->grp_first->grp_prev = req; |
|
|
1614 | |
|
|
1615 | grp->grp_first = req; |
|
|
1616 | } |
|
|
1617 | } |
|
|
1618 | } |
|
|
1619 | |
|
|
1620 | void |
|
|
1621 | cancel_subs (aio_req_ornot req) |
|
|
1622 | CODE: |
|
|
1623 | req_cancel_subs (req); |
|
|
1624 | |
|
|
1625 | void |
|
|
1626 | result (aio_req grp, ...) |
|
|
1627 | CODE: |
|
|
1628 | { |
|
|
1629 | int i; |
|
|
1630 | AV *av; |
|
|
1631 | |
|
|
1632 | grp->errorno = errno; |
|
|
1633 | |
|
|
1634 | av = newAV (); |
|
|
1635 | |
|
|
1636 | for (i = 1; i < items; ++i ) |
|
|
1637 | av_push (av, newSVsv (ST (i))); |
|
|
1638 | |
|
|
1639 | SvREFCNT_dec (grp->data); |
|
|
1640 | grp->data = (SV *)av; |
|
|
1641 | } |
|
|
1642 | |
|
|
1643 | void |
|
|
1644 | errno (aio_req grp, int errorno = errno) |
|
|
1645 | CODE: |
|
|
1646 | grp->errorno = errorno; |
|
|
1647 | |
|
|
1648 | void |
|
|
1649 | limit (aio_req grp, int limit) |
|
|
1650 | CODE: |
|
|
1651 | grp->fd2 = limit; |
|
|
1652 | aio_grp_feed (grp); |
|
|
1653 | |
|
|
1654 | void |
|
|
1655 | feed (aio_req grp, SV *callback=&PL_sv_undef) |
|
|
1656 | CODE: |
|
|
1657 | { |
|
|
1658 | SvREFCNT_dec (grp->fh2); |
|
|
1659 | grp->fh2 = newSVsv (callback); |
|
|
1660 | |
|
|
1661 | if (grp->fd2 <= 0) |
|
|
1662 | grp->fd2 = 2; |
|
|
1663 | |
|
|
1664 | aio_grp_feed (grp); |
|
|
1665 | } |
|
|
1666 | |