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 | |
7 | #include <sys/types.h> |
5 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
6 | #include <sys/stat.h> |
9 | #include <unistd.h> |
7 | #include <unistd.h> |
10 | #include <fcntl.h> |
8 | #include <fcntl.h> |
11 | #include <signal.h> |
9 | #include <signal.h> |
12 | #include <sched.h> |
10 | #include <sched.h> |
13 | #include <endian.h> |
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14 | |
11 | |
15 | #include <pthread.h> |
12 | #include <pthread.h> |
16 | #include <sys/syscall.h> |
13 | #include <sys/syscall.h> |
17 | |
14 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
15 | 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 ;) */ |
16 | 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 ;) */ |
17 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | |
18 | |
22 | #if __i386 || __amd64 |
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23 | # define STACKSIZE ( 256 * sizeof (long)) |
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24 | #elif __ia64 |
19 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
20 | # define STACKSIZE 65536 |
26 | #else |
21 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
22 | # define STACKSIZE 4096 |
28 | #endif |
23 | #endif |
29 | |
24 | |
30 | enum { |
25 | enum { |
31 | REQ_QUIT, |
26 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
27 | REQ_OPEN, REQ_CLOSE, |
… | |
… | |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
29 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
30 | REQ_FSYNC, REQ_FDATASYNC, |
36 | }; |
31 | }; |
37 | |
32 | |
38 | typedef struct aio_cb { |
33 | typedef struct aio_cb { |
39 | struct aio_cb *next; |
34 | struct aio_cb *volatile next; |
40 | |
35 | |
41 | int type; |
36 | int type; |
42 | |
37 | |
43 | int fd; |
38 | int fd; |
44 | off_t offset; |
39 | off_t offset; |
… | |
… | |
55 | |
50 | |
56 | typedef aio_cb *aio_req; |
51 | typedef aio_cb *aio_req; |
57 | |
52 | |
58 | static int started; |
53 | static int started; |
59 | static int nreqs; |
54 | static int nreqs; |
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55 | static int max_outstanding = 1<<30; |
60 | static int reqpipe[2], respipe[2]; |
56 | static int respipe [2]; |
61 | |
57 | |
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58 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
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59 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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60 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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61 | |
62 | static aio_req qs, qe; /* queue start, queue end */ |
62 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
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63 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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64 | |
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65 | static void |
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66 | poll_wait () |
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67 | { |
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68 | if (!nreqs) |
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69 | return; |
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70 | |
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71 | fd_set rfd; |
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72 | FD_ZERO(&rfd); |
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73 | FD_SET(respipe [0], &rfd); |
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74 | |
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75 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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76 | } |
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77 | |
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78 | static int |
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79 | poll_cb () |
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80 | { |
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81 | dSP; |
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82 | int count = 0; |
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83 | aio_req req; |
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84 | |
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85 | { |
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86 | /* read and signals sent by the worker threads */ |
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87 | char buf [32]; |
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88 | while (read (respipe [0], buf, 32) > 0) |
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89 | ; |
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90 | } |
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91 | |
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92 | for (;;) |
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93 | { |
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94 | pthread_mutex_lock (&reslock); |
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95 | |
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96 | req = ress; |
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97 | |
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98 | if (ress) |
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99 | { |
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100 | ress = ress->next; |
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101 | if (!ress) rese = 0; |
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102 | } |
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103 | |
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104 | pthread_mutex_unlock (&reslock); |
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105 | |
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106 | if (!req) |
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107 | break; |
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108 | |
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109 | nreqs--; |
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110 | |
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111 | if (req->type == REQ_QUIT) |
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112 | started--; |
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113 | else |
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114 | { |
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115 | int errorno = errno; |
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116 | errno = req->errorno; |
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117 | |
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118 | if (req->type == REQ_READ) |
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119 | SvCUR_set (req->data, req->dataoffset |
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120 | + req->result > 0 ? req->result : 0); |
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121 | |
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122 | if (req->data) |
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123 | SvREFCNT_dec (req->data); |
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124 | |
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125 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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126 | { |
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127 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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128 | PL_laststatval = req->result; |
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129 | PL_statcache = *(req->statdata); |
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130 | |
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131 | Safefree (req->statdata); |
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132 | } |
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133 | |
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134 | PUSHMARK (SP); |
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135 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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136 | |
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137 | if (req->type == REQ_OPEN) |
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138 | { |
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139 | /* convert fd to fh */ |
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140 | SV *fh; |
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141 | |
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142 | PUTBACK; |
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143 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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144 | SPAGAIN; |
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145 | |
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146 | fh = POPs; |
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147 | |
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148 | PUSHMARK (SP); |
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149 | XPUSHs (fh); |
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150 | } |
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151 | |
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152 | if (SvOK (req->callback)) |
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153 | { |
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154 | PUTBACK; |
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155 | call_sv (req->callback, G_VOID | G_EVAL); |
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156 | SPAGAIN; |
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157 | } |
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158 | |
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159 | if (req->callback) |
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160 | SvREFCNT_dec (req->callback); |
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161 | |
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162 | errno = errorno; |
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163 | count++; |
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164 | } |
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165 | |
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166 | Safefree (req); |
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167 | } |
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168 | |
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169 | return count; |
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170 | } |
63 | |
171 | |
64 | static void *aio_proc(void *arg); |
172 | static void *aio_proc(void *arg); |
65 | |
173 | |
66 | static void |
174 | static void |
67 | start_thread (void) |
175 | start_thread (void) |
… | |
… | |
82 | |
190 | |
83 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
191 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
84 | } |
192 | } |
85 | |
193 | |
86 | static void |
194 | 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) |
195 | send_req (aio_req req) |
99 | { |
196 | { |
100 | nreqs++; |
197 | nreqs++; |
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198 | |
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199 | pthread_mutex_lock (&reqlock); |
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200 | |
101 | req->next = 0; |
201 | req->next = 0; |
102 | |
202 | |
103 | if (qe) |
203 | if (reqe) |
104 | { |
204 | { |
105 | qe->next = req; |
205 | reqe->next = req; |
106 | qe = req; |
206 | reqe = req; |
107 | } |
207 | } |
108 | else |
208 | else |
109 | qe = qs = req; |
209 | reqe = reqs = req; |
110 | |
210 | |
111 | send_reqs (); |
211 | pthread_cond_signal (&reqwait); |
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212 | pthread_mutex_unlock (&reqlock); |
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213 | |
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214 | while (nreqs > max_outstanding) |
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215 | { |
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216 | poll_wait (); |
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217 | poll_cb (); |
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218 | } |
112 | } |
219 | } |
113 | |
220 | |
114 | static void |
221 | static void |
115 | end_thread (void) |
222 | end_thread (void) |
116 | { |
223 | { |
… | |
… | |
120 | |
227 | |
121 | send_req (req); |
228 | send_req (req); |
122 | } |
229 | } |
123 | |
230 | |
124 | static void |
231 | static void |
125 | read_write (pTHX_ |
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126 | int dowrite, int fd, off_t offset, size_t length, |
232 | read_write (int dowrite, int fd, off_t offset, size_t length, |
127 | SV *data, STRLEN dataoffset, SV *callback) |
233 | SV *data, STRLEN dataoffset, SV *callback) |
128 | { |
234 | { |
129 | aio_req req; |
235 | aio_req req; |
130 | STRLEN svlen; |
236 | STRLEN svlen; |
131 | char *svptr = SvPV (data, svlen); |
237 | char *svptr = SvPV (data, svlen); |
… | |
… | |
168 | req->callback = SvREFCNT_inc (callback); |
274 | req->callback = SvREFCNT_inc (callback); |
169 | |
275 | |
170 | send_req (req); |
276 | send_req (req); |
171 | } |
277 | } |
172 | |
278 | |
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 | |
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220 | if (req->type == REQ_OPEN) |
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221 | { |
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222 | /* convert fd to fh */ |
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223 | SV *fh; |
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224 | |
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225 | PUTBACK; |
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226 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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227 | SPAGAIN; |
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228 | |
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229 | fh = POPs; |
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230 | |
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231 | PUSHMARK (SP); |
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232 | XPUSHs (fh); |
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233 | } |
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234 | |
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235 | PUTBACK; |
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236 | call_sv (req->callback, G_VOID | G_EVAL); |
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237 | SPAGAIN; |
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238 | |
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239 | if (req->callback) |
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240 | SvREFCNT_dec (req->callback); |
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241 | |
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242 | errno = errorno; |
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243 | count++; |
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244 | } |
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245 | |
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246 | Safefree (req); |
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247 | } |
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248 | |
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249 | if (qs) |
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250 | send_reqs (); |
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251 | |
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252 | return count; |
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253 | } |
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254 | |
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255 | static void * |
279 | static void * |
256 | aio_proc (void *thr_arg) |
280 | aio_proc (void *thr_arg) |
257 | { |
281 | { |
258 | aio_req req; |
282 | aio_req req; |
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283 | int type; |
259 | |
284 | |
260 | /* then loop */ |
285 | do |
261 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
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262 | { |
286 | { |
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287 | pthread_mutex_lock (&reqlock); |
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288 | |
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289 | for (;;) |
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290 | { |
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291 | req = reqs; |
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292 | |
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293 | if (reqs) |
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294 | { |
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295 | reqs = reqs->next; |
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296 | if (!reqs) reqe = 0; |
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297 | } |
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298 | |
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299 | if (req) |
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300 | break; |
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301 | |
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302 | pthread_cond_wait (&reqwait, &reqlock); |
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303 | } |
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304 | |
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305 | pthread_mutex_unlock (&reqlock); |
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306 | |
263 | errno = 0; /* strictly unnecessary */ |
307 | errno = 0; /* strictly unnecessary */ |
264 | |
308 | |
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309 | type = req->type; |
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310 | |
265 | switch (req->type) |
311 | switch (type) |
266 | { |
312 | { |
267 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
313 | case REQ_READ: req->result = pread64 (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; |
314 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
269 | #if SYS_readahead |
315 | #if SYS_readahead |
270 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
316 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
… | |
… | |
282 | |
328 | |
283 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
329 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
284 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
330 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
285 | |
331 | |
286 | case REQ_QUIT: |
332 | case REQ_QUIT: |
287 | write (respipe[1], (void *)&req, sizeof (req)); |
333 | break; |
288 | return 0; |
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289 | |
334 | |
290 | default: |
335 | default: |
291 | req->result = ENOSYS; |
336 | req->result = ENOSYS; |
292 | break; |
337 | break; |
293 | } |
338 | } |
294 | |
339 | |
295 | req->errorno = errno; |
340 | req->errorno = errno; |
296 | write (respipe[1], (void *)&req, sizeof (req)); |
341 | |
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342 | pthread_mutex_lock (&reslock); |
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343 | |
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344 | req->next = 0; |
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345 | |
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346 | if (rese) |
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347 | { |
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348 | rese->next = req; |
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349 | rese = req; |
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350 | } |
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351 | else |
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352 | { |
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353 | rese = ress = req; |
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354 | |
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355 | /* write a dummy byte to the pipe so fh becomes ready */ |
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356 | write (respipe [1], &respipe, 1); |
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357 | } |
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358 | |
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359 | pthread_mutex_unlock (&reslock); |
297 | } |
360 | } |
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361 | while (type != REQ_QUIT); |
298 | |
362 | |
299 | return 0; |
363 | return 0; |
300 | } |
364 | } |
301 | |
365 | |
302 | MODULE = IO::AIO PACKAGE = IO::AIO |
366 | MODULE = IO::AIO PACKAGE = IO::AIO |
303 | |
367 | |
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368 | PROTOTYPES: ENABLE |
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369 | |
304 | BOOT: |
370 | BOOT: |
305 | { |
371 | { |
306 | if (pipe (reqpipe) || pipe (respipe)) |
372 | if (pipe (respipe)) |
307 | croak ("unable to initialize request or result pipe"); |
373 | croak ("unable to initialize result pipe"); |
308 | |
374 | |
309 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
375 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
310 | croak ("cannot set result pipe to nonblocking mode"); |
376 | croak ("cannot set result pipe to nonblocking mode"); |
311 | |
377 | |
312 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
378 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
313 | croak ("cannot set result pipe to nonblocking mode"); |
379 | croak ("cannot set result pipe to nonblocking mode"); |
314 | } |
380 | } |
315 | |
381 | |
316 | void |
382 | void |
317 | min_parallel(nthreads) |
383 | min_parallel(nthreads) |
… | |
… | |
335 | } |
401 | } |
336 | |
402 | |
337 | while (started > nthreads) |
403 | while (started > nthreads) |
338 | { |
404 | { |
339 | poll_wait (); |
405 | poll_wait (); |
340 | poll_cb (aTHX); |
406 | poll_cb (); |
341 | } |
407 | } |
342 | } |
408 | } |
343 | |
409 | |
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410 | int |
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411 | max_outstanding(nreqs) |
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412 | int nreqs |
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413 | PROTOTYPE: $ |
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414 | CODE: |
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415 | RETVAL = max_outstanding; |
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416 | max_outstanding = nreqs; |
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417 | |
344 | void |
418 | void |
345 | aio_open(pathname,flags,mode,callback) |
419 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
346 | SV * pathname |
420 | SV * pathname |
347 | int flags |
421 | int flags |
348 | int mode |
422 | int mode |
349 | SV * callback |
423 | SV * callback |
350 | PROTOTYPE: $$$$ |
424 | PROTOTYPE: $$$;$ |
351 | CODE: |
425 | CODE: |
352 | { |
426 | { |
353 | aio_req req; |
427 | aio_req req; |
354 | |
428 | |
355 | Newz (0, req, 1, aio_cb); |
429 | Newz (0, req, 1, aio_cb); |
… | |
… | |
366 | |
440 | |
367 | send_req (req); |
441 | send_req (req); |
368 | } |
442 | } |
369 | |
443 | |
370 | void |
444 | void |
371 | aio_close(fh,callback) |
445 | aio_close(fh,callback=&PL_sv_undef) |
372 | InputStream fh |
446 | InputStream fh |
373 | SV * callback |
447 | SV * callback |
374 | PROTOTYPE: $$ |
448 | PROTOTYPE: $;$ |
375 | ALIAS: |
449 | ALIAS: |
376 | aio_close = REQ_CLOSE |
450 | aio_close = REQ_CLOSE |
377 | aio_fsync = REQ_FSYNC |
451 | aio_fsync = REQ_FSYNC |
378 | aio_fdatasync = REQ_FDATASYNC |
452 | aio_fdatasync = REQ_FDATASYNC |
379 | CODE: |
453 | CODE: |
… | |
… | |
391 | |
465 | |
392 | send_req (req); |
466 | send_req (req); |
393 | } |
467 | } |
394 | |
468 | |
395 | void |
469 | void |
396 | aio_read(fh,offset,length,data,dataoffset,callback) |
470 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
397 | InputStream fh |
471 | InputStream fh |
398 | UV offset |
472 | UV offset |
399 | IV length |
473 | IV length |
400 | SV * data |
474 | SV * data |
401 | IV dataoffset |
475 | IV dataoffset |
402 | SV * callback |
476 | SV * callback |
403 | PROTOTYPE: $$$$$$ |
477 | PROTOTYPE: $$$$$;$ |
404 | CODE: |
478 | CODE: |
405 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
479 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
406 | |
480 | |
407 | void |
481 | void |
408 | aio_write(fh,offset,length,data,dataoffset,callback) |
482 | aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
409 | OutputStream fh |
483 | OutputStream fh |
410 | UV offset |
484 | UV offset |
411 | IV length |
485 | IV length |
412 | SV * data |
486 | SV * data |
413 | IV dataoffset |
487 | IV dataoffset |
414 | SV * callback |
488 | SV * callback |
415 | PROTOTYPE: $$$$$$ |
489 | PROTOTYPE: $$$$$;$ |
416 | CODE: |
490 | CODE: |
417 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
491 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
418 | |
492 | |
419 | void |
493 | void |
420 | aio_readahead(fh,offset,length,callback) |
494 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
421 | InputStream fh |
495 | InputStream fh |
422 | UV offset |
496 | UV offset |
423 | IV length |
497 | IV length |
424 | SV * callback |
498 | SV * callback |
425 | PROTOTYPE: $$$$ |
499 | PROTOTYPE: $$$;$ |
426 | CODE: |
500 | CODE: |
427 | { |
501 | { |
428 | aio_req req; |
502 | aio_req req; |
429 | |
503 | |
430 | if (length < 0) |
504 | if (length < 0) |
… | |
… | |
443 | |
517 | |
444 | send_req (req); |
518 | send_req (req); |
445 | } |
519 | } |
446 | |
520 | |
447 | void |
521 | void |
448 | aio_stat(fh_or_path,callback) |
522 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
449 | SV * fh_or_path |
523 | SV * fh_or_path |
450 | SV * callback |
524 | SV * callback |
451 | PROTOTYPE: $$ |
|
|
452 | ALIAS: |
525 | ALIAS: |
|
|
526 | aio_stat = REQ_STAT |
453 | aio_lstat = 1 |
527 | aio_lstat = REQ_LSTAT |
454 | CODE: |
528 | CODE: |
455 | { |
529 | { |
456 | aio_req req; |
530 | aio_req req; |
457 | |
531 | |
458 | Newz (0, req, 1, aio_cb); |
532 | Newz (0, req, 1, aio_cb); |
… | |
… | |
465 | if (!req->statdata) |
539 | if (!req->statdata) |
466 | croak ("out of memory during aio_req->statdata allocation"); |
540 | croak ("out of memory during aio_req->statdata allocation"); |
467 | |
541 | |
468 | if (SvPOK (fh_or_path)) |
542 | if (SvPOK (fh_or_path)) |
469 | { |
543 | { |
470 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
544 | req->type = ix; |
471 | req->data = newSVsv (fh_or_path); |
545 | req->data = newSVsv (fh_or_path); |
472 | req->dataptr = SvPV_nolen (req->data); |
546 | req->dataptr = SvPV_nolen (req->data); |
473 | } |
547 | } |
474 | else |
548 | else |
475 | { |
549 | { |
… | |
… | |
481 | |
555 | |
482 | send_req (req); |
556 | send_req (req); |
483 | } |
557 | } |
484 | |
558 | |
485 | void |
559 | void |
486 | aio_unlink(pathname,callback) |
560 | aio_unlink(pathname,callback=&PL_sv_undef) |
487 | SV * pathname |
561 | SV * pathname |
488 | SV * callback |
562 | SV * callback |
489 | PROTOTYPE: $$ |
|
|
490 | CODE: |
563 | CODE: |
491 | { |
564 | { |
492 | aio_req req; |
565 | aio_req req; |
493 | |
566 | |
494 | Newz (0, req, 1, aio_cb); |
567 | Newz (0, req, 1, aio_cb); |
… | |
… | |
502 | req->callback = SvREFCNT_inc (callback); |
575 | req->callback = SvREFCNT_inc (callback); |
503 | |
576 | |
504 | send_req (req); |
577 | send_req (req); |
505 | } |
578 | } |
506 | |
579 | |
|
|
580 | void |
|
|
581 | flush() |
|
|
582 | PROTOTYPE: |
|
|
583 | CODE: |
|
|
584 | while (nreqs) |
|
|
585 | { |
|
|
586 | poll_wait (); |
|
|
587 | poll_cb (); |
|
|
588 | } |
|
|
589 | |
|
|
590 | void |
|
|
591 | poll() |
|
|
592 | PROTOTYPE: |
|
|
593 | CODE: |
|
|
594 | if (nreqs) |
|
|
595 | { |
|
|
596 | poll_wait (); |
|
|
597 | poll_cb (); |
|
|
598 | } |
|
|
599 | |
507 | int |
600 | int |
508 | poll_fileno() |
601 | poll_fileno() |
509 | PROTOTYPE: |
602 | PROTOTYPE: |
510 | CODE: |
603 | CODE: |
511 | RETVAL = respipe[0]; |
604 | RETVAL = respipe [0]; |
512 | OUTPUT: |
605 | OUTPUT: |
513 | RETVAL |
606 | RETVAL |
514 | |
607 | |
515 | int |
608 | int |
516 | poll_cb(...) |
609 | poll_cb(...) |
517 | PROTOTYPE: |
610 | PROTOTYPE: |
518 | CODE: |
611 | CODE: |
519 | RETVAL = poll_cb (aTHX); |
612 | RETVAL = poll_cb (); |
520 | OUTPUT: |
613 | OUTPUT: |
521 | RETVAL |
614 | RETVAL |
522 | |
615 | |
523 | void |
616 | void |
524 | poll_wait() |
617 | poll_wait() |
525 | PROTOTYPE: |
618 | PROTOTYPE: |
526 | CODE: |
619 | CODE: |
|
|
620 | if (nreqs) |
527 | poll_wait (); |
621 | poll_wait (); |
528 | |
622 | |
529 | int |
623 | int |
530 | nreqs() |
624 | nreqs() |
531 | PROTOTYPE: |
625 | PROTOTYPE: |
532 | CODE: |
626 | CODE: |