1 | #define PERL_NO_GET_CONTEXT |
1 | #define _REENTRANT 1 |
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2 | #include <errno.h> |
2 | |
3 | |
3 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "perl.h" |
5 | #include "XSUB.h" |
6 | #include "XSUB.h" |
6 | |
7 | |
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8 | #include "autoconf/config.h" |
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9 | |
7 | #include <sys/types.h> |
10 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
11 | #include <sys/stat.h> |
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12 | |
9 | #include <unistd.h> |
13 | #include <unistd.h> |
10 | #include <fcntl.h> |
14 | #include <fcntl.h> |
11 | #include <signal.h> |
15 | #include <signal.h> |
12 | #include <sched.h> |
16 | #include <sched.h> |
13 | #include <endian.h> |
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14 | |
17 | |
15 | #include <pthread.h> |
18 | #include <pthread.h> |
16 | #include <sys/syscall.h> |
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17 | |
19 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
19 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | |
23 | |
22 | #if __i386 || __amd64 |
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23 | # define STACKSIZE ( 256 * sizeof (long)) |
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24 | #elif __ia64 |
24 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
25 | # define STACKSIZE 65536 |
26 | #else |
26 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
27 | # define STACKSIZE 4096 |
28 | #endif |
28 | #endif |
29 | |
29 | |
30 | enum { |
30 | enum { |
31 | REQ_QUIT, |
31 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
32 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
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36 | REQ_UNLINK, REQ_RMDIR, |
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37 | REQ_SYMLINK, |
36 | }; |
38 | }; |
37 | |
39 | |
38 | typedef struct aio_cb { |
40 | typedef struct aio_cb { |
39 | struct aio_cb *volatile next; |
41 | struct aio_cb *volatile next; |
40 | |
42 | |
… | |
… | |
44 | off_t offset; |
46 | off_t offset; |
45 | size_t length; |
47 | size_t length; |
46 | ssize_t result; |
48 | ssize_t result; |
47 | mode_t mode; /* open */ |
49 | mode_t mode; /* open */ |
48 | int errorno; |
50 | int errorno; |
49 | SV *data, *callback; |
51 | SV *data, *callback, *fh; |
50 | void *dataptr; |
52 | void *dataptr, *data2ptr; |
51 | STRLEN dataoffset; |
53 | STRLEN dataoffset; |
52 | |
54 | |
53 | Stat_t *statdata; |
55 | Stat_t *statdata; |
54 | } aio_cb; |
56 | } aio_cb; |
55 | |
57 | |
56 | typedef aio_cb *aio_req; |
58 | typedef aio_cb *aio_req; |
57 | |
59 | |
58 | static int started; |
60 | static int started; |
59 | static int nreqs; |
61 | static volatile int nreqs; |
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62 | static int max_outstanding = 1<<30; |
60 | static int respipe [2]; |
63 | static int respipe [2]; |
61 | |
64 | |
62 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
63 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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67 | static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER; |
64 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
68 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
65 | |
69 | |
66 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
70 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
67 | static volatile aio_req ress, rese; /* queue start, queue end */ |
71 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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72 | |
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73 | static void |
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74 | poll_wait () |
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75 | { |
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76 | if (nreqs && !ress) |
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77 | { |
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78 | fd_set rfd; |
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79 | FD_ZERO(&rfd); |
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80 | FD_SET(respipe [0], &rfd); |
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81 | |
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82 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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83 | } |
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84 | } |
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85 | |
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86 | static int |
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87 | poll_cb () |
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88 | { |
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89 | dSP; |
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90 | int count = 0; |
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91 | int do_croak = 0; |
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92 | aio_req req, prv; |
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93 | |
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94 | pthread_mutex_lock (&reslock); |
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95 | |
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96 | { |
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97 | /* read any signals sent by the worker threads */ |
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98 | char buf [32]; |
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99 | while (read (respipe [0], buf, 32) == 32) |
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100 | ; |
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101 | } |
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102 | |
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103 | req = ress; |
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104 | ress = rese = 0; |
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105 | |
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106 | pthread_mutex_unlock (&reslock); |
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107 | |
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108 | while (req) |
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109 | { |
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110 | nreqs--; |
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111 | |
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112 | if (req->type == REQ_QUIT) |
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113 | started--; |
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114 | else |
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115 | { |
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116 | int errorno = errno; |
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117 | errno = req->errorno; |
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118 | |
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119 | if (req->type == REQ_READ) |
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120 | SvCUR_set (req->data, req->dataoffset |
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121 | + req->result > 0 ? req->result : 0); |
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122 | |
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123 | if (req->data) |
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124 | SvREFCNT_dec (req->data); |
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125 | |
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126 | if (req->fh) |
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127 | SvREFCNT_dec (req->fh); |
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128 | |
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129 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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130 | { |
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131 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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132 | PL_laststatval = req->result; |
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133 | PL_statcache = *(req->statdata); |
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134 | |
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135 | Safefree (req->statdata); |
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136 | } |
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137 | |
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138 | ENTER; |
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139 | PUSHMARK (SP); |
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140 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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141 | |
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142 | if (req->type == REQ_OPEN) |
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143 | { |
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144 | /* convert fd to fh */ |
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145 | SV *fh; |
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146 | |
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147 | PUTBACK; |
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148 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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149 | SPAGAIN; |
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150 | |
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151 | fh = SvREFCNT_inc (POPs); |
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152 | |
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153 | PUSHMARK (SP); |
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154 | XPUSHs (sv_2mortal (fh)); |
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155 | } |
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156 | |
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157 | if (SvOK (req->callback)) |
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158 | { |
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159 | PUTBACK; |
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160 | call_sv (req->callback, G_VOID | G_EVAL); |
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161 | SPAGAIN; |
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162 | } |
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163 | |
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164 | do_croak = SvTRUE (ERRSV); |
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165 | |
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166 | LEAVE; |
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167 | |
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168 | if (req->callback) |
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169 | SvREFCNT_dec (req->callback); |
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170 | |
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171 | errno = errorno; |
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172 | count++; |
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173 | } |
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174 | |
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175 | prv = req; |
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176 | req = req->next; |
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177 | Safefree (prv); |
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178 | |
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179 | if (do_croak) |
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180 | croak (0); |
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181 | } |
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182 | |
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183 | return count; |
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184 | } |
68 | |
185 | |
69 | static void *aio_proc(void *arg); |
186 | static void *aio_proc(void *arg); |
70 | |
187 | |
71 | static void |
188 | static void |
72 | start_thread (void) |
189 | start_thread (void) |
… | |
… | |
105 | else |
222 | else |
106 | reqe = reqs = req; |
223 | reqe = reqs = req; |
107 | |
224 | |
108 | pthread_cond_signal (&reqwait); |
225 | pthread_cond_signal (&reqwait); |
109 | pthread_mutex_unlock (&reqlock); |
226 | pthread_mutex_unlock (&reqlock); |
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227 | |
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228 | while (nreqs > max_outstanding) |
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229 | { |
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230 | poll_wait (); |
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231 | poll_cb (); |
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232 | } |
110 | } |
233 | } |
111 | |
234 | |
112 | static void |
235 | static void |
113 | end_thread (void) |
236 | end_thread (void) |
114 | { |
237 | { |
… | |
… | |
117 | req->type = REQ_QUIT; |
240 | req->type = REQ_QUIT; |
118 | |
241 | |
119 | send_req (req); |
242 | send_req (req); |
120 | } |
243 | } |
121 | |
244 | |
122 | static void |
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123 | read_write (pTHX_ |
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124 | int dowrite, int fd, off_t offset, size_t length, |
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125 | SV *data, STRLEN dataoffset, SV *callback) |
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126 | { |
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127 | aio_req req; |
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128 | STRLEN svlen; |
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129 | char *svptr = SvPV (data, svlen); |
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130 | |
245 | |
131 | SvUPGRADE (data, SVt_PV); |
246 | static void min_parallel (int nthreads) |
132 | SvPOK_on (data); |
247 | { |
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248 | while (nthreads > started) |
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249 | start_thread (); |
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250 | } |
133 | |
251 | |
134 | if (dataoffset < 0) |
252 | static void max_parallel (int nthreads) |
135 | dataoffset += svlen; |
253 | { |
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254 | int cur = started; |
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255 | while (cur > nthreads) |
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256 | { |
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257 | end_thread (); |
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258 | cur--; |
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259 | } |
136 | |
260 | |
137 | if (dataoffset < 0 || dataoffset > svlen) |
261 | while (started > nthreads) |
138 | croak ("data offset outside of string"); |
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139 | |
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140 | if (dowrite) |
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141 | { |
262 | { |
142 | /* write: check length and adjust. */ |
263 | poll_wait (); |
143 | if (length < 0 || length + dataoffset > svlen) |
264 | poll_cb (); |
144 | length = svlen - dataoffset; |
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145 | } |
265 | } |
146 | else |
266 | } |
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267 | |
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268 | static int fork_started; |
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269 | |
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270 | static void atfork_prepare (void) |
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271 | { |
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272 | int nstarted; |
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273 | |
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274 | for (;;) { |
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275 | while (nreqs) |
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276 | { |
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277 | poll_wait (); |
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278 | poll_cb (); |
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279 | } |
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280 | |
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281 | nstarted = started; |
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282 | max_parallel (0); |
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283 | |
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284 | pthread_mutex_lock (&reqlock); |
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285 | |
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286 | if (!nreqs && !started) |
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287 | break; |
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288 | |
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289 | pthread_mutex_unlock (&reqlock); |
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290 | |
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291 | min_parallel (fork_started); |
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292 | } |
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293 | |
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294 | pthread_mutex_lock (&frklock); |
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295 | fork_started = nstarted; |
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296 | pthread_mutex_lock (&reslock); |
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297 | |
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298 | assert (!started); |
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299 | assert (!nreqs); |
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300 | assert (!reqs && !reqe); |
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301 | assert (!ress && !rese); |
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302 | } |
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303 | |
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304 | static void atfork_parent (void) |
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305 | { |
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306 | pthread_mutex_unlock (&reslock); |
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307 | pthread_mutex_unlock (&frklock); |
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308 | pthread_mutex_unlock (&reqlock); |
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309 | |
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310 | min_parallel (fork_started); |
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311 | } |
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312 | |
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313 | #define atfork_child atfork_parent |
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314 | |
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315 | /*****************************************************************************/ |
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316 | /* work around various missing functions */ |
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317 | |
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318 | #if !HAVE_PREADWRITE |
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319 | # define pread aio_pread |
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320 | # define pwrite aio_pwrite |
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321 | |
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322 | /* |
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323 | * make our pread/pwrite safe against themselves, but not against |
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324 | * normal read/write by using a mutex. slows down execution a lot, |
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325 | * but that's your problem, not mine. |
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326 | */ |
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327 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
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328 | |
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329 | static ssize_t |
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330 | pread (int fd, void *buf, size_t count, off_t offset) |
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331 | { |
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332 | ssize_t res; |
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333 | off_t ooffset; |
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334 | |
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335 | pthread_mutex_lock (&iolock); |
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336 | ooffset = lseek (fd, 0, SEEK_CUR); |
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337 | lseek (fd, offset, SEEK_SET); |
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338 | res = read (fd, buf, count); |
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339 | lseek (fd, ooffset, SEEK_SET); |
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340 | pthread_mutex_unlock (&iolock); |
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341 | |
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342 | return res; |
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343 | } |
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344 | |
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345 | static ssize_t |
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346 | pwrite (int fd, void *buf, size_t count, off_t offset) |
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347 | { |
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348 | ssize_t res; |
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349 | off_t ooffset; |
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350 | |
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351 | pthread_mutex_lock (&iolock); |
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352 | ooffset = lseek (fd, 0, SEEK_CUR); |
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353 | lseek (fd, offset, SEEK_SET); |
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354 | res = write (fd, buf, count); |
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355 | lseek (fd, offset, SEEK_SET); |
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356 | pthread_mutex_unlock (&iolock); |
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357 | |
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358 | return res; |
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359 | } |
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360 | #endif |
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361 | |
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362 | #if !HAVE_FDATASYNC |
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363 | # define fdatasync fsync |
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364 | #endif |
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365 | |
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366 | #if !HAVE_READAHEAD |
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367 | # define readahead aio_readahead |
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368 | |
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369 | static char readahead_buf[4096]; |
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370 | |
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371 | static ssize_t |
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372 | readahead (int fd, off_t offset, size_t count) |
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373 | { |
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374 | while (count > 0) |
147 | { |
375 | { |
148 | /* read: grow scalar as necessary */ |
376 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
149 | svptr = SvGROW (data, length + dataoffset); |
377 | |
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378 | pread (fd, readahead_buf, len, offset); |
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379 | offset += len; |
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380 | count -= len; |
150 | } |
381 | } |
151 | |
382 | |
152 | if (length < 0) |
383 | errno = 0; |
153 | croak ("length must not be negative"); |
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154 | |
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155 | Newz (0, req, 1, aio_cb); |
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156 | |
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157 | if (!req) |
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158 | croak ("out of memory during aio_req allocation"); |
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159 | |
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160 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
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161 | req->fd = fd; |
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162 | req->offset = offset; |
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163 | req->length = length; |
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164 | req->data = SvREFCNT_inc (data); |
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165 | req->dataptr = (char *)svptr + dataoffset; |
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166 | req->callback = SvREFCNT_inc (callback); |
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167 | |
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168 | send_req (req); |
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169 | } |
384 | } |
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385 | #endif |
170 | |
386 | |
171 | static void |
387 | /*****************************************************************************/ |
172 | poll_wait () |
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173 | { |
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174 | if (!nreqs) |
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175 | return; |
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176 | |
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177 | fd_set rfd; |
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178 | FD_ZERO(&rfd); |
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179 | FD_SET(respipe [0], &rfd); |
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180 | |
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181 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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182 | } |
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183 | |
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184 | static int |
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185 | poll_cb (pTHX) |
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186 | { |
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187 | dSP; |
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188 | int count = 0; |
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189 | aio_req req; |
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190 | |
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191 | { |
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192 | /* read and signals sent by the worker threads */ |
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193 | char buf [32]; |
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194 | while (read (respipe [0], buf, 32) > 0) |
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195 | ; |
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196 | } |
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197 | |
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198 | for (;;) |
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199 | { |
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200 | pthread_mutex_lock (&reslock); |
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201 | |
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202 | req = ress; |
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203 | |
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204 | if (ress) |
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205 | { |
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206 | ress = ress->next; |
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207 | if (!ress) rese = 0; |
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208 | } |
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209 | |
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210 | pthread_mutex_unlock (&reslock); |
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211 | |
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212 | if (!req) |
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213 | break; |
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214 | |
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215 | nreqs--; |
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216 | |
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217 | if (req->type == REQ_QUIT) |
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218 | started--; |
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219 | else |
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220 | { |
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221 | int errorno = errno; |
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222 | errno = req->errorno; |
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223 | |
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224 | if (req->type == REQ_READ) |
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225 | SvCUR_set (req->data, req->dataoffset |
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226 | + req->result > 0 ? req->result : 0); |
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227 | |
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228 | if (req->data) |
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229 | SvREFCNT_dec (req->data); |
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230 | |
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231 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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232 | { |
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233 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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234 | PL_laststatval = req->result; |
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235 | PL_statcache = *(req->statdata); |
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236 | |
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237 | Safefree (req->statdata); |
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238 | } |
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239 | |
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240 | PUSHMARK (SP); |
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241 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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242 | |
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243 | if (req->type == REQ_OPEN) |
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244 | { |
|
|
245 | /* convert fd to fh */ |
|
|
246 | SV *fh; |
|
|
247 | |
|
|
248 | PUTBACK; |
|
|
249 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
250 | SPAGAIN; |
|
|
251 | |
|
|
252 | fh = POPs; |
|
|
253 | |
|
|
254 | PUSHMARK (SP); |
|
|
255 | XPUSHs (fh); |
|
|
256 | } |
|
|
257 | |
|
|
258 | PUTBACK; |
|
|
259 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
260 | SPAGAIN; |
|
|
261 | |
|
|
262 | if (req->callback) |
|
|
263 | SvREFCNT_dec (req->callback); |
|
|
264 | |
|
|
265 | errno = errorno; |
|
|
266 | count++; |
|
|
267 | } |
|
|
268 | |
|
|
269 | Safefree (req); |
|
|
270 | } |
|
|
271 | |
|
|
272 | return count; |
|
|
273 | } |
|
|
274 | |
388 | |
275 | static void * |
389 | static void * |
276 | aio_proc (void *thr_arg) |
390 | aio_proc (void *thr_arg) |
277 | { |
391 | { |
278 | aio_req req; |
392 | aio_req req; |
… | |
… | |
304 | |
418 | |
305 | type = req->type; |
419 | type = req->type; |
306 | |
420 | |
307 | switch (type) |
421 | switch (type) |
308 | { |
422 | { |
309 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
423 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
310 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
424 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
311 | #if SYS_readahead |
425 | |
312 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
426 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
313 | #else |
|
|
314 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
315 | #endif |
|
|
316 | |
427 | |
317 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
428 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
318 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
429 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
319 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
430 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
320 | |
431 | |
321 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
432 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
322 | case REQ_CLOSE: req->result = close (req->fd); break; |
433 | case REQ_CLOSE: req->result = close (req->fd); break; |
323 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
434 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
435 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
436 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
324 | |
437 | |
|
|
438 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
325 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
439 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
326 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
327 | |
440 | |
328 | case REQ_QUIT: |
441 | case REQ_QUIT: |
329 | break; |
442 | break; |
330 | |
443 | |
331 | default: |
444 | default: |
… | |
… | |
357 | while (type != REQ_QUIT); |
470 | while (type != REQ_QUIT); |
358 | |
471 | |
359 | return 0; |
472 | return 0; |
360 | } |
473 | } |
361 | |
474 | |
|
|
475 | #define dREQ \ |
|
|
476 | aio_req req; \ |
|
|
477 | \ |
|
|
478 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
479 | croak ("clalback must be undef or of reference type"); \ |
|
|
480 | \ |
|
|
481 | Newz (0, req, 1, aio_cb); \ |
|
|
482 | if (!req) \ |
|
|
483 | croak ("out of memory during aio_req allocation"); \ |
|
|
484 | \ |
|
|
485 | req->callback = SvREFCNT_inc (callback); |
|
|
486 | |
362 | MODULE = IO::AIO PACKAGE = IO::AIO |
487 | MODULE = IO::AIO PACKAGE = IO::AIO |
|
|
488 | |
|
|
489 | PROTOTYPES: ENABLE |
363 | |
490 | |
364 | BOOT: |
491 | BOOT: |
365 | { |
492 | { |
366 | if (pipe (respipe)) |
493 | if (pipe (respipe)) |
367 | croak ("unable to initialize result pipe"); |
494 | croak ("unable to initialize result pipe"); |
… | |
… | |
369 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
496 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
370 | croak ("cannot set result pipe to nonblocking mode"); |
497 | croak ("cannot set result pipe to nonblocking mode"); |
371 | |
498 | |
372 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
499 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
373 | croak ("cannot set result pipe to nonblocking mode"); |
500 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
501 | |
|
|
502 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
374 | } |
503 | } |
375 | |
504 | |
376 | void |
505 | void |
377 | min_parallel(nthreads) |
506 | min_parallel(nthreads) |
378 | int nthreads |
507 | int nthreads |
379 | PROTOTYPE: $ |
508 | PROTOTYPE: $ |
380 | CODE: |
|
|
381 | while (nthreads > started) |
|
|
382 | start_thread (); |
|
|
383 | |
509 | |
384 | void |
510 | void |
385 | max_parallel(nthreads) |
511 | max_parallel(nthreads) |
386 | int nthreads |
512 | int nthreads |
387 | PROTOTYPE: $ |
513 | PROTOTYPE: $ |
|
|
514 | |
|
|
515 | int |
|
|
516 | max_outstanding(nreqs) |
|
|
517 | int nreqs |
|
|
518 | PROTOTYPE: $ |
388 | CODE: |
519 | CODE: |
389 | { |
520 | RETVAL = max_outstanding; |
390 | int cur = started; |
521 | max_outstanding = nreqs; |
391 | while (cur > nthreads) |
|
|
392 | { |
|
|
393 | end_thread (); |
|
|
394 | cur--; |
|
|
395 | } |
|
|
396 | |
522 | |
397 | while (started > nthreads) |
|
|
398 | { |
|
|
399 | poll_wait (); |
|
|
400 | poll_cb (aTHX); |
|
|
401 | } |
|
|
402 | } |
|
|
403 | |
|
|
404 | void |
523 | void |
405 | aio_open(pathname,flags,mode,callback) |
524 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
406 | SV * pathname |
525 | SV * pathname |
407 | int flags |
526 | int flags |
408 | int mode |
527 | int mode |
409 | SV * callback |
528 | SV * callback |
410 | PROTOTYPE: $$$$ |
529 | PROTOTYPE: $$$;$ |
411 | CODE: |
530 | CODE: |
412 | { |
531 | { |
413 | aio_req req; |
532 | dREQ; |
414 | |
|
|
415 | Newz (0, req, 1, aio_cb); |
|
|
416 | |
|
|
417 | if (!req) |
|
|
418 | croak ("out of memory during aio_req allocation"); |
|
|
419 | |
533 | |
420 | req->type = REQ_OPEN; |
534 | req->type = REQ_OPEN; |
421 | req->data = newSVsv (pathname); |
535 | req->data = newSVsv (pathname); |
422 | req->dataptr = SvPV_nolen (req->data); |
536 | req->dataptr = SvPVbyte_nolen (req->data); |
423 | req->fd = flags; |
537 | req->fd = flags; |
424 | req->mode = mode; |
538 | req->mode = mode; |
425 | req->callback = SvREFCNT_inc (callback); |
|
|
426 | |
539 | |
427 | send_req (req); |
540 | send_req (req); |
428 | } |
541 | } |
429 | |
542 | |
430 | void |
543 | void |
431 | aio_close(fh,callback) |
544 | aio_close(fh,callback=&PL_sv_undef) |
432 | InputStream fh |
545 | SV * fh |
433 | SV * callback |
546 | SV * callback |
434 | PROTOTYPE: $$ |
547 | PROTOTYPE: $;$ |
435 | ALIAS: |
548 | ALIAS: |
436 | aio_close = REQ_CLOSE |
549 | aio_close = REQ_CLOSE |
437 | aio_fsync = REQ_FSYNC |
550 | aio_fsync = REQ_FSYNC |
438 | aio_fdatasync = REQ_FDATASYNC |
551 | aio_fdatasync = REQ_FDATASYNC |
439 | CODE: |
552 | CODE: |
440 | { |
553 | { |
|
|
554 | dREQ; |
|
|
555 | |
|
|
556 | req->type = ix; |
|
|
557 | req->fh = newSVsv (fh); |
|
|
558 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
559 | |
|
|
560 | send_req (req); |
|
|
561 | } |
|
|
562 | |
|
|
563 | void |
|
|
564 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
565 | SV * fh |
|
|
566 | UV offset |
|
|
567 | IV length |
|
|
568 | SV * data |
|
|
569 | IV dataoffset |
|
|
570 | SV * callback |
|
|
571 | ALIAS: |
|
|
572 | aio_read = REQ_READ |
|
|
573 | aio_write = REQ_WRITE |
|
|
574 | PROTOTYPE: $$$$$;$ |
|
|
575 | CODE: |
|
|
576 | { |
441 | aio_req req; |
577 | aio_req req; |
|
|
578 | STRLEN svlen; |
|
|
579 | char *svptr = SvPVbyte (data, svlen); |
442 | |
580 | |
443 | Newz (0, req, 1, aio_cb); |
581 | SvUPGRADE (data, SVt_PV); |
|
|
582 | SvPOK_on (data); |
444 | |
583 | |
445 | if (!req) |
584 | if (dataoffset < 0) |
446 | croak ("out of memory during aio_req allocation"); |
585 | dataoffset += svlen; |
447 | |
586 | |
448 | req->type = ix; |
587 | if (dataoffset < 0 || dataoffset > svlen) |
449 | req->fd = PerlIO_fileno (fh); |
588 | croak ("data offset outside of string"); |
450 | req->callback = SvREFCNT_inc (callback); |
|
|
451 | |
589 | |
452 | send_req (req); |
590 | if (ix == REQ_WRITE) |
453 | } |
591 | { |
454 | |
592 | /* write: check length and adjust. */ |
455 | void |
593 | if (length < 0 || length + dataoffset > svlen) |
456 | aio_read(fh,offset,length,data,dataoffset,callback) |
594 | length = svlen - dataoffset; |
457 | InputStream fh |
595 | } |
458 | UV offset |
596 | else |
459 | IV length |
597 | { |
460 | SV * data |
598 | /* read: grow scalar as necessary */ |
461 | IV dataoffset |
599 | svptr = SvGROW (data, length + dataoffset); |
462 | SV * callback |
600 | } |
463 | PROTOTYPE: $$$$$$ |
|
|
464 | CODE: |
|
|
465 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
466 | |
|
|
467 | void |
|
|
468 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
469 | OutputStream fh |
|
|
470 | UV offset |
|
|
471 | IV length |
|
|
472 | SV * data |
|
|
473 | IV dataoffset |
|
|
474 | SV * callback |
|
|
475 | PROTOTYPE: $$$$$$ |
|
|
476 | CODE: |
|
|
477 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
478 | |
|
|
479 | void |
|
|
480 | aio_readahead(fh,offset,length,callback) |
|
|
481 | InputStream fh |
|
|
482 | UV offset |
|
|
483 | IV length |
|
|
484 | SV * callback |
|
|
485 | PROTOTYPE: $$$$ |
|
|
486 | CODE: |
|
|
487 | { |
|
|
488 | aio_req req; |
|
|
489 | |
601 | |
490 | if (length < 0) |
602 | if (length < 0) |
491 | croak ("length must not be negative"); |
603 | croak ("length must not be negative"); |
492 | |
604 | |
493 | Newz (0, req, 1, aio_cb); |
605 | { |
|
|
606 | dREQ; |
494 | |
607 | |
495 | if (!req) |
608 | req->type = ix; |
496 | croak ("out of memory during aio_req allocation"); |
609 | req->fh = newSVsv (fh); |
|
|
610 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
611 | : IoOFP (sv_2io (fh))); |
|
|
612 | req->offset = offset; |
|
|
613 | req->length = length; |
|
|
614 | req->data = SvREFCNT_inc (data); |
|
|
615 | req->dataptr = (char *)svptr + dataoffset; |
|
|
616 | req->callback = SvREFCNT_inc (callback); |
|
|
617 | |
|
|
618 | send_req (req); |
|
|
619 | } |
|
|
620 | } |
|
|
621 | |
|
|
622 | void |
|
|
623 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
624 | SV * fh |
|
|
625 | UV offset |
|
|
626 | IV length |
|
|
627 | SV * callback |
|
|
628 | PROTOTYPE: $$$;$ |
|
|
629 | CODE: |
|
|
630 | { |
|
|
631 | dREQ; |
497 | |
632 | |
498 | req->type = REQ_READAHEAD; |
633 | req->type = REQ_READAHEAD; |
|
|
634 | req->fh = newSVsv (fh); |
499 | req->fd = PerlIO_fileno (fh); |
635 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
500 | req->offset = offset; |
636 | req->offset = offset; |
501 | req->length = length; |
637 | req->length = length; |
502 | req->callback = SvREFCNT_inc (callback); |
|
|
503 | |
638 | |
504 | send_req (req); |
639 | send_req (req); |
505 | } |
640 | } |
506 | |
641 | |
507 | void |
642 | void |
508 | aio_stat(fh_or_path,callback) |
643 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
509 | SV * fh_or_path |
644 | SV * fh_or_path |
510 | SV * callback |
645 | SV * callback |
511 | PROTOTYPE: $$ |
|
|
512 | ALIAS: |
646 | ALIAS: |
|
|
647 | aio_stat = REQ_STAT |
513 | aio_lstat = 1 |
648 | aio_lstat = REQ_LSTAT |
514 | CODE: |
649 | CODE: |
515 | { |
650 | { |
516 | aio_req req; |
651 | dREQ; |
517 | |
|
|
518 | Newz (0, req, 1, aio_cb); |
|
|
519 | |
|
|
520 | if (!req) |
|
|
521 | croak ("out of memory during aio_req allocation"); |
|
|
522 | |
652 | |
523 | New (0, req->statdata, 1, Stat_t); |
653 | New (0, req->statdata, 1, Stat_t); |
524 | |
|
|
525 | if (!req->statdata) |
654 | if (!req->statdata) |
526 | croak ("out of memory during aio_req->statdata allocation"); |
655 | croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)"); |
527 | |
656 | |
528 | if (SvPOK (fh_or_path)) |
657 | if (SvPOK (fh_or_path)) |
529 | { |
658 | { |
530 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
659 | req->type = ix; |
531 | req->data = newSVsv (fh_or_path); |
660 | req->data = newSVsv (fh_or_path); |
532 | req->dataptr = SvPV_nolen (req->data); |
661 | req->dataptr = SvPVbyte_nolen (req->data); |
533 | } |
662 | } |
534 | else |
663 | else |
535 | { |
664 | { |
536 | req->type = REQ_FSTAT; |
665 | req->type = REQ_FSTAT; |
|
|
666 | req->fh = newSVsv (fh_or_path); |
537 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
667 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
538 | } |
668 | } |
539 | |
669 | |
540 | req->callback = SvREFCNT_inc (callback); |
|
|
541 | |
|
|
542 | send_req (req); |
670 | send_req (req); |
543 | } |
671 | } |
544 | |
672 | |
545 | void |
673 | void |
546 | aio_unlink(pathname,callback) |
674 | aio_unlink(pathname,callback=&PL_sv_undef) |
547 | SV * pathname |
675 | SV * pathname |
548 | SV * callback |
676 | SV * callback |
549 | PROTOTYPE: $$ |
677 | ALIAS: |
|
|
678 | aio_unlink = REQ_UNLINK |
|
|
679 | aio_rmdir = REQ_RMDIR |
550 | CODE: |
680 | CODE: |
551 | { |
681 | { |
552 | aio_req req; |
682 | dREQ; |
553 | |
683 | |
554 | Newz (0, req, 1, aio_cb); |
684 | req->type = ix; |
555 | |
|
|
556 | if (!req) |
|
|
557 | croak ("out of memory during aio_req allocation"); |
|
|
558 | |
|
|
559 | req->type = REQ_UNLINK; |
|
|
560 | req->data = newSVsv (pathname); |
685 | req->data = newSVsv (pathname); |
561 | req->dataptr = SvPV_nolen (req->data); |
686 | req->dataptr = SvPVbyte_nolen (req->data); |
562 | req->callback = SvREFCNT_inc (callback); |
|
|
563 | |
687 | |
564 | send_req (req); |
688 | send_req (req); |
565 | } |
689 | } |
|
|
690 | |
|
|
691 | void |
|
|
692 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
693 | SV * oldpath |
|
|
694 | SV * newpath |
|
|
695 | SV * callback |
|
|
696 | CODE: |
|
|
697 | { |
|
|
698 | dREQ; |
|
|
699 | |
|
|
700 | req->type = REQ_SYMLINK; |
|
|
701 | req->fh = newSVsv (oldpath); |
|
|
702 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
703 | req->data = newSVsv (newpath); |
|
|
704 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
705 | |
|
|
706 | send_req (req); |
|
|
707 | } |
|
|
708 | |
|
|
709 | void |
|
|
710 | flush() |
|
|
711 | PROTOTYPE: |
|
|
712 | CODE: |
|
|
713 | while (nreqs) |
|
|
714 | { |
|
|
715 | poll_wait (); |
|
|
716 | poll_cb (); |
|
|
717 | } |
|
|
718 | |
|
|
719 | void |
|
|
720 | poll() |
|
|
721 | PROTOTYPE: |
|
|
722 | CODE: |
|
|
723 | if (nreqs) |
|
|
724 | { |
|
|
725 | poll_wait (); |
|
|
726 | poll_cb (); |
|
|
727 | } |
566 | |
728 | |
567 | int |
729 | int |
568 | poll_fileno() |
730 | poll_fileno() |
569 | PROTOTYPE: |
731 | PROTOTYPE: |
570 | CODE: |
732 | CODE: |
… | |
… | |
574 | |
736 | |
575 | int |
737 | int |
576 | poll_cb(...) |
738 | poll_cb(...) |
577 | PROTOTYPE: |
739 | PROTOTYPE: |
578 | CODE: |
740 | CODE: |
579 | RETVAL = poll_cb (aTHX); |
741 | RETVAL = poll_cb (); |
580 | OUTPUT: |
742 | OUTPUT: |
581 | RETVAL |
743 | RETVAL |
582 | |
744 | |
583 | void |
745 | void |
584 | poll_wait() |
746 | poll_wait() |