1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
4 | #include "perl.h" |
2 | #include "perl.h" |
5 | #include "XSUB.h" |
3 | #include "XSUB.h" |
6 | |
4 | |
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5 | #define _XOPEN_SOURCE 500 |
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6 | |
7 | #include <sys/types.h> |
7 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
8 | #include <sys/stat.h> |
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9 | |
9 | #include <unistd.h> |
10 | #include <unistd.h> |
10 | #include <fcntl.h> |
11 | #include <fcntl.h> |
11 | #include <signal.h> |
12 | #include <signal.h> |
12 | #include <sched.h> |
13 | #include <sched.h> |
13 | #include <endian.h> |
14 | #if __linux |
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15 | #include <sys/syscall.h> |
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16 | #endif |
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, |
… | |
… | |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
36 | }; |
36 | }; |
37 | |
37 | |
38 | typedef struct aio_cb { |
38 | typedef struct aio_cb { |
39 | struct aio_cb *next; |
39 | struct aio_cb *volatile next; |
40 | |
40 | |
41 | int type; |
41 | int type; |
42 | |
42 | |
43 | int fd; |
43 | int fd; |
44 | off_t offset; |
44 | off_t offset; |
… | |
… | |
55 | |
55 | |
56 | typedef aio_cb *aio_req; |
56 | typedef aio_cb *aio_req; |
57 | |
57 | |
58 | static int started; |
58 | static int started; |
59 | static int nreqs; |
59 | static int nreqs; |
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60 | static int max_outstanding = 1<<30; |
60 | static int reqpipe[2], respipe[2]; |
61 | static int respipe [2]; |
61 | |
62 | |
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63 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
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64 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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65 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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66 | |
62 | static aio_req qs, qe; /* queue start, queue end */ |
67 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
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68 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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69 | |
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70 | static void |
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71 | poll_wait () |
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72 | { |
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73 | if (!nreqs) |
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74 | return; |
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75 | |
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76 | fd_set rfd; |
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77 | FD_ZERO(&rfd); |
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78 | FD_SET(respipe [0], &rfd); |
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79 | |
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80 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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81 | } |
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82 | |
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83 | static int |
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84 | poll_cb () |
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85 | { |
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86 | dSP; |
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87 | int count = 0; |
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88 | aio_req req; |
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89 | |
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90 | { |
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91 | /* read and signals sent by the worker threads */ |
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92 | char buf [32]; |
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93 | while (read (respipe [0], buf, 32) > 0) |
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94 | ; |
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95 | } |
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96 | |
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97 | for (;;) |
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98 | { |
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99 | pthread_mutex_lock (&reslock); |
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100 | |
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101 | req = ress; |
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102 | |
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103 | if (ress) |
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104 | { |
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105 | ress = ress->next; |
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106 | if (!ress) rese = 0; |
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107 | } |
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108 | |
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109 | pthread_mutex_unlock (&reslock); |
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110 | |
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111 | if (!req) |
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112 | break; |
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113 | |
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114 | nreqs--; |
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115 | |
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116 | if (req->type == REQ_QUIT) |
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117 | started--; |
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118 | else |
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119 | { |
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120 | int errorno = errno; |
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121 | errno = req->errorno; |
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122 | |
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123 | if (req->type == REQ_READ) |
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124 | SvCUR_set (req->data, req->dataoffset |
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125 | + req->result > 0 ? req->result : 0); |
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126 | |
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127 | if (req->data) |
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128 | SvREFCNT_dec (req->data); |
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129 | |
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130 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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131 | { |
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132 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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133 | PL_laststatval = req->result; |
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134 | PL_statcache = *(req->statdata); |
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135 | |
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136 | Safefree (req->statdata); |
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137 | } |
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138 | |
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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 = POPs; |
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152 | |
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153 | PUSHMARK (SP); |
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154 | XPUSHs (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 | if (req->callback) |
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165 | SvREFCNT_dec (req->callback); |
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166 | |
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167 | errno = errorno; |
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168 | count++; |
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169 | } |
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170 | |
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171 | Safefree (req); |
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172 | } |
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173 | |
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174 | return count; |
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175 | } |
63 | |
176 | |
64 | static void *aio_proc(void *arg); |
177 | static void *aio_proc(void *arg); |
65 | |
178 | |
66 | static void |
179 | static void |
67 | start_thread (void) |
180 | start_thread (void) |
… | |
… | |
82 | |
195 | |
83 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
196 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
84 | } |
197 | } |
85 | |
198 | |
86 | static void |
199 | static void |
87 | send_reqs (void) |
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88 | { |
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89 | /* this write is atomic */ |
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90 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
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91 | { |
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92 | qs = qs->next; |
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93 | if (!qs) qe = 0; |
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94 | } |
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95 | } |
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96 | |
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97 | static void |
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98 | send_req (aio_req req) |
200 | send_req (aio_req req) |
99 | { |
201 | { |
100 | nreqs++; |
202 | nreqs++; |
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203 | |
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204 | pthread_mutex_lock (&reqlock); |
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205 | |
101 | req->next = 0; |
206 | req->next = 0; |
102 | |
207 | |
103 | if (qe) |
208 | if (reqe) |
104 | { |
209 | { |
105 | qe->next = req; |
210 | reqe->next = req; |
106 | qe = req; |
211 | reqe = req; |
107 | } |
212 | } |
108 | else |
213 | else |
109 | qe = qs = req; |
214 | reqe = reqs = req; |
110 | |
215 | |
111 | send_reqs (); |
216 | pthread_cond_signal (&reqwait); |
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217 | pthread_mutex_unlock (&reqlock); |
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218 | |
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219 | while (nreqs > max_outstanding) |
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220 | { |
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221 | poll_wait (); |
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222 | poll_cb (); |
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223 | } |
112 | } |
224 | } |
113 | |
225 | |
114 | static void |
226 | static void |
115 | end_thread (void) |
227 | end_thread (void) |
116 | { |
228 | { |
… | |
… | |
120 | |
232 | |
121 | send_req (req); |
233 | send_req (req); |
122 | } |
234 | } |
123 | |
235 | |
124 | static void |
236 | static void |
125 | read_write (pTHX_ |
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126 | int dowrite, int fd, off_t offset, size_t length, |
237 | read_write (int dowrite, int fd, off_t offset, size_t length, |
127 | SV *data, STRLEN dataoffset, SV *callback) |
238 | SV *data, STRLEN dataoffset, SV *callback) |
128 | { |
239 | { |
129 | aio_req req; |
240 | aio_req req; |
130 | STRLEN svlen; |
241 | STRLEN svlen; |
131 | char *svptr = SvPV (data, svlen); |
242 | char *svptr = SvPV (data, svlen); |
… | |
… | |
168 | req->callback = SvREFCNT_inc (callback); |
279 | req->callback = SvREFCNT_inc (callback); |
169 | |
280 | |
170 | send_req (req); |
281 | send_req (req); |
171 | } |
282 | } |
172 | |
283 | |
173 | static void |
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174 | poll_wait () |
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175 | { |
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176 | fd_set rfd; |
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177 | FD_ZERO(&rfd); |
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178 | FD_SET(respipe[0], &rfd); |
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179 | |
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180 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
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181 | } |
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182 | |
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183 | static int |
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184 | poll_cb (pTHX) |
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185 | { |
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186 | dSP; |
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187 | int count = 0; |
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188 | aio_req req; |
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189 | |
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190 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
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191 | { |
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192 | nreqs--; |
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193 | |
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194 | if (req->type == REQ_QUIT) |
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195 | started--; |
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196 | else |
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197 | { |
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198 | int errorno = errno; |
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199 | errno = req->errorno; |
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200 | |
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201 | if (req->type == REQ_READ) |
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202 | SvCUR_set (req->data, req->dataoffset |
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203 | + req->result > 0 ? req->result : 0); |
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204 | |
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205 | if (req->data) |
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206 | SvREFCNT_dec (req->data); |
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207 | |
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208 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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209 | { |
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210 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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211 | PL_laststatval = req->result; |
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212 | PL_statcache = *(req->statdata); |
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213 | |
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214 | Safefree (req->statdata); |
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215 | } |
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216 | |
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217 | PUSHMARK (SP); |
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218 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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219 | PUTBACK; |
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220 | call_sv (req->callback, G_VOID); |
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221 | SPAGAIN; |
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222 | |
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223 | if (req->callback) |
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224 | SvREFCNT_dec (req->callback); |
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225 | |
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226 | errno = errorno; |
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227 | count++; |
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228 | } |
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229 | |
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230 | Safefree (req); |
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231 | } |
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232 | |
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233 | if (qs) |
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234 | send_reqs (); |
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235 | |
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236 | return count; |
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237 | } |
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238 | |
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239 | static void * |
284 | static void * |
240 | aio_proc (void *thr_arg) |
285 | aio_proc (void *thr_arg) |
241 | { |
286 | { |
242 | aio_req req; |
287 | aio_req req; |
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288 | int type; |
243 | |
289 | |
244 | /* then loop */ |
290 | do |
245 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
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246 | { |
291 | { |
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292 | pthread_mutex_lock (&reqlock); |
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293 | |
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294 | for (;;) |
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295 | { |
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296 | req = reqs; |
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297 | |
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298 | if (reqs) |
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299 | { |
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300 | reqs = reqs->next; |
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301 | if (!reqs) reqe = 0; |
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302 | } |
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303 | |
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304 | if (req) |
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305 | break; |
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306 | |
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307 | pthread_cond_wait (&reqwait, &reqlock); |
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308 | } |
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309 | |
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310 | pthread_mutex_unlock (&reqlock); |
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311 | |
247 | errno = 0; /* strictly unnecessary */ |
312 | errno = 0; /* strictly unnecessary */ |
248 | |
313 | |
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314 | type = req->type; |
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315 | |
249 | switch (req->type) |
316 | switch (type) |
250 | { |
317 | { |
251 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
318 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
252 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
319 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
253 | #if SYS_readahead |
320 | #if SYS_readahead |
254 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
321 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
255 | #else |
322 | #else |
256 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
323 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
257 | #endif |
324 | #endif |
… | |
… | |
266 | |
333 | |
267 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
334 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
268 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
335 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
269 | |
336 | |
270 | case REQ_QUIT: |
337 | case REQ_QUIT: |
271 | write (respipe[1], (void *)&req, sizeof (req)); |
338 | break; |
272 | return 0; |
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273 | |
339 | |
274 | default: |
340 | default: |
275 | req->result = ENOSYS; |
341 | req->result = ENOSYS; |
276 | break; |
342 | break; |
277 | } |
343 | } |
278 | |
344 | |
279 | req->errorno = errno; |
345 | req->errorno = errno; |
280 | write (respipe[1], (void *)&req, sizeof (req)); |
346 | |
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347 | pthread_mutex_lock (&reslock); |
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348 | |
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349 | req->next = 0; |
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350 | |
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351 | if (rese) |
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352 | { |
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353 | rese->next = req; |
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354 | rese = req; |
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355 | } |
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356 | else |
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357 | { |
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358 | rese = ress = req; |
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359 | |
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360 | /* write a dummy byte to the pipe so fh becomes ready */ |
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361 | write (respipe [1], &respipe, 1); |
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362 | } |
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363 | |
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364 | pthread_mutex_unlock (&reslock); |
281 | } |
365 | } |
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366 | while (type != REQ_QUIT); |
282 | |
367 | |
283 | return 0; |
368 | return 0; |
284 | } |
369 | } |
285 | |
370 | |
286 | MODULE = IO::AIO PACKAGE = IO::AIO |
371 | MODULE = IO::AIO PACKAGE = IO::AIO |
287 | |
372 | |
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373 | PROTOTYPES: ENABLE |
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374 | |
288 | BOOT: |
375 | BOOT: |
289 | { |
376 | { |
290 | if (pipe (reqpipe) || pipe (respipe)) |
377 | if (pipe (respipe)) |
291 | croak ("unable to initialize request or result pipe"); |
378 | croak ("unable to initialize result pipe"); |
292 | |
379 | |
293 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
380 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
294 | croak ("cannot set result pipe to nonblocking mode"); |
381 | croak ("cannot set result pipe to nonblocking mode"); |
295 | |
382 | |
296 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
383 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
297 | croak ("cannot set result pipe to nonblocking mode"); |
384 | croak ("cannot set result pipe to nonblocking mode"); |
298 | } |
385 | } |
299 | |
386 | |
300 | void |
387 | void |
301 | min_parallel(nthreads) |
388 | min_parallel(nthreads) |
… | |
… | |
319 | } |
406 | } |
320 | |
407 | |
321 | while (started > nthreads) |
408 | while (started > nthreads) |
322 | { |
409 | { |
323 | poll_wait (); |
410 | poll_wait (); |
324 | poll_cb (aTHX); |
411 | poll_cb (); |
325 | } |
412 | } |
326 | } |
413 | } |
327 | |
414 | |
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415 | int |
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416 | max_outstanding(nreqs) |
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417 | int nreqs |
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418 | PROTOTYPE: $ |
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419 | CODE: |
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420 | RETVAL = max_outstanding; |
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421 | max_outstanding = nreqs; |
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422 | |
328 | void |
423 | void |
329 | aio_open(pathname,flags,mode,callback) |
424 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
330 | SV * pathname |
425 | SV * pathname |
331 | int flags |
426 | int flags |
332 | int mode |
427 | int mode |
333 | SV * callback |
428 | SV * callback |
334 | PROTOTYPE: $$$$ |
429 | PROTOTYPE: $$$;$ |
335 | CODE: |
430 | CODE: |
336 | { |
431 | { |
337 | aio_req req; |
432 | aio_req req; |
338 | |
433 | |
339 | Newz (0, req, 1, aio_cb); |
434 | Newz (0, req, 1, aio_cb); |
… | |
… | |
350 | |
445 | |
351 | send_req (req); |
446 | send_req (req); |
352 | } |
447 | } |
353 | |
448 | |
354 | void |
449 | void |
355 | aio_close(fh,callback) |
450 | aio_close(fh,callback=&PL_sv_undef) |
356 | InputStream fh |
451 | InputStream fh |
357 | SV * callback |
452 | SV * callback |
358 | PROTOTYPE: $$ |
453 | PROTOTYPE: $;$ |
359 | ALIAS: |
454 | ALIAS: |
360 | aio_close = REQ_CLOSE |
455 | aio_close = REQ_CLOSE |
361 | aio_fsync = REQ_FSYNC |
456 | aio_fsync = REQ_FSYNC |
362 | aio_fdatasync = REQ_FDATASYNC |
457 | aio_fdatasync = REQ_FDATASYNC |
363 | CODE: |
458 | CODE: |
… | |
… | |
375 | |
470 | |
376 | send_req (req); |
471 | send_req (req); |
377 | } |
472 | } |
378 | |
473 | |
379 | void |
474 | void |
380 | aio_read(fh,offset,length,data,dataoffset,callback) |
475 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
381 | InputStream fh |
476 | InputStream fh |
382 | UV offset |
477 | UV offset |
383 | IV length |
478 | IV length |
384 | SV * data |
479 | SV * data |
385 | IV dataoffset |
480 | IV dataoffset |
386 | SV * callback |
481 | SV * callback |
387 | PROTOTYPE: $$$$$$ |
482 | PROTOTYPE: $$$$$;$ |
388 | CODE: |
483 | CODE: |
389 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
484 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
390 | |
485 | |
391 | void |
486 | void |
392 | aio_write(fh,offset,length,data,dataoffset,callback) |
487 | aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
393 | OutputStream fh |
488 | OutputStream fh |
394 | UV offset |
489 | UV offset |
395 | IV length |
490 | IV length |
396 | SV * data |
491 | SV * data |
397 | IV dataoffset |
492 | IV dataoffset |
398 | SV * callback |
493 | SV * callback |
399 | PROTOTYPE: $$$$$$ |
494 | PROTOTYPE: $$$$$;$ |
400 | CODE: |
495 | CODE: |
401 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
496 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
402 | |
497 | |
403 | void |
498 | void |
404 | aio_readahead(fh,offset,length,callback) |
499 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
405 | InputStream fh |
500 | InputStream fh |
406 | UV offset |
501 | UV offset |
407 | IV length |
502 | IV length |
408 | SV * callback |
503 | SV * callback |
409 | PROTOTYPE: $$$$ |
504 | PROTOTYPE: $$$;$ |
410 | CODE: |
505 | CODE: |
411 | { |
506 | { |
412 | aio_req req; |
507 | aio_req req; |
413 | |
508 | |
414 | if (length < 0) |
509 | if (length < 0) |
… | |
… | |
427 | |
522 | |
428 | send_req (req); |
523 | send_req (req); |
429 | } |
524 | } |
430 | |
525 | |
431 | void |
526 | void |
432 | aio_stat(fh_or_path,callback) |
527 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
433 | SV * fh_or_path |
528 | SV * fh_or_path |
434 | SV * callback |
529 | SV * callback |
435 | PROTOTYPE: $$ |
|
|
436 | ALIAS: |
530 | ALIAS: |
|
|
531 | aio_stat = REQ_STAT |
437 | aio_lstat = 1 |
532 | aio_lstat = REQ_LSTAT |
438 | CODE: |
533 | CODE: |
439 | { |
534 | { |
440 | aio_req req; |
535 | aio_req req; |
441 | |
536 | |
442 | Newz (0, req, 1, aio_cb); |
537 | Newz (0, req, 1, aio_cb); |
… | |
… | |
449 | if (!req->statdata) |
544 | if (!req->statdata) |
450 | croak ("out of memory during aio_req->statdata allocation"); |
545 | croak ("out of memory during aio_req->statdata allocation"); |
451 | |
546 | |
452 | if (SvPOK (fh_or_path)) |
547 | if (SvPOK (fh_or_path)) |
453 | { |
548 | { |
454 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
549 | req->type = ix; |
455 | req->data = newSVsv (fh_or_path); |
550 | req->data = newSVsv (fh_or_path); |
456 | req->dataptr = SvPV_nolen (req->data); |
551 | req->dataptr = SvPV_nolen (req->data); |
457 | } |
552 | } |
458 | else |
553 | else |
459 | { |
554 | { |
… | |
… | |
465 | |
560 | |
466 | send_req (req); |
561 | send_req (req); |
467 | } |
562 | } |
468 | |
563 | |
469 | void |
564 | void |
470 | aio_unlink(pathname,callback) |
565 | aio_unlink(pathname,callback=&PL_sv_undef) |
471 | SV * pathname |
566 | SV * pathname |
472 | SV * callback |
567 | SV * callback |
473 | PROTOTYPE: $$ |
|
|
474 | CODE: |
568 | CODE: |
475 | { |
569 | { |
476 | aio_req req; |
570 | aio_req req; |
477 | |
571 | |
478 | Newz (0, req, 1, aio_cb); |
572 | Newz (0, req, 1, aio_cb); |
… | |
… | |
486 | req->callback = SvREFCNT_inc (callback); |
580 | req->callback = SvREFCNT_inc (callback); |
487 | |
581 | |
488 | send_req (req); |
582 | send_req (req); |
489 | } |
583 | } |
490 | |
584 | |
|
|
585 | void |
|
|
586 | flush() |
|
|
587 | PROTOTYPE: |
|
|
588 | CODE: |
|
|
589 | while (nreqs) |
|
|
590 | { |
|
|
591 | poll_wait (); |
|
|
592 | poll_cb (); |
|
|
593 | } |
|
|
594 | |
|
|
595 | void |
|
|
596 | poll() |
|
|
597 | PROTOTYPE: |
|
|
598 | CODE: |
|
|
599 | if (nreqs) |
|
|
600 | { |
|
|
601 | poll_wait (); |
|
|
602 | poll_cb (); |
|
|
603 | } |
|
|
604 | |
491 | int |
605 | int |
492 | poll_fileno() |
606 | poll_fileno() |
493 | PROTOTYPE: |
607 | PROTOTYPE: |
494 | CODE: |
608 | CODE: |
495 | RETVAL = respipe[0]; |
609 | RETVAL = respipe [0]; |
496 | OUTPUT: |
610 | OUTPUT: |
497 | RETVAL |
611 | RETVAL |
498 | |
612 | |
499 | int |
613 | int |
500 | poll_cb(...) |
614 | poll_cb(...) |
501 | PROTOTYPE: |
615 | PROTOTYPE: |
502 | CODE: |
616 | CODE: |
503 | RETVAL = poll_cb (aTHX); |
617 | RETVAL = poll_cb (); |
504 | OUTPUT: |
618 | OUTPUT: |
505 | RETVAL |
619 | RETVAL |
506 | |
620 | |
507 | void |
621 | void |
508 | poll_wait() |
622 | poll_wait() |
509 | PROTOTYPE: |
623 | PROTOTYPE: |
510 | CODE: |
624 | CODE: |
|
|
625 | if (nreqs) |
511 | poll_wait (); |
626 | poll_wait (); |
512 | |
627 | |
513 | int |
628 | int |
514 | nreqs() |
629 | nreqs() |
515 | PROTOTYPE: |
630 | PROTOTYPE: |
516 | CODE: |
631 | CODE: |