1 | #define PERL_NO_GET_CONTEXT |
1 | #define _XOPEN_SOURCE 500 |
2 | |
2 | |
3 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
4 | #include "perl.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
5 | #include "XSUB.h" |
6 | |
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; |
… | |
… | |
54 | } aio_cb; |
54 | } aio_cb; |
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 volatile 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 && !ress) |
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74 | { |
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75 | fd_set rfd; |
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76 | FD_ZERO(&rfd); |
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77 | FD_SET(respipe [0], &rfd); |
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78 | |
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79 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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80 | } |
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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, prv; |
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89 | |
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90 | static int rl;//D |
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91 | //printf ("%d ENTER\n", ++rl);//D |
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92 | |
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93 | pthread_mutex_lock (&reslock); |
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94 | |
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95 | { |
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96 | /* read any signals sent by the worker threads */ |
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97 | char buf [32]; |
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98 | while (read (respipe [0], buf, 32) > 0) |
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99 | ; |
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100 | } |
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101 | |
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102 | req = ress; |
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103 | ress = rese = 0; |
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104 | |
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105 | pthread_mutex_unlock (&reslock); |
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106 | |
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107 | while (req) |
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108 | { |
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109 | nreqs--; |
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110 | //printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D |
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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->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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127 | { |
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128 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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129 | PL_laststatval = req->result; |
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130 | PL_statcache = *(req->statdata); |
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131 | |
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132 | Safefree (req->statdata); |
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133 | } |
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134 | |
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135 | PUSHMARK (SP); |
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136 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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137 | |
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138 | if (req->type == REQ_OPEN) |
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139 | { |
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140 | /* convert fd to fh */ |
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141 | SV *fh; |
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142 | |
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143 | PUTBACK; |
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144 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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145 | SPAGAIN; |
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146 | |
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147 | fh = POPs; |
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148 | |
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149 | PUSHMARK (SP); |
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150 | XPUSHs (fh); |
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151 | } |
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152 | |
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153 | if (SvOK (req->callback)) |
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154 | { |
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155 | PUTBACK; |
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156 | call_sv (req->callback, G_VOID | G_EVAL); |
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157 | SPAGAIN; |
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158 | } |
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159 | |
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160 | if (req->callback) |
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161 | SvREFCNT_dec (req->callback); |
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162 | |
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163 | errno = errorno; |
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164 | count++; |
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165 | } |
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166 | |
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167 | prv = req; |
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168 | req = req->next; |
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169 | Safefree (prv); |
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170 | |
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171 | /* TODO: croak on errors? */ |
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172 | } |
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173 | |
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174 | //printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D |
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175 | return count; |
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176 | } |
63 | |
177 | |
64 | static void *aio_proc(void *arg); |
178 | static void *aio_proc(void *arg); |
65 | |
179 | |
66 | static void |
180 | static void |
67 | start_thread (void) |
181 | start_thread (void) |
… | |
… | |
82 | |
196 | |
83 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
197 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
84 | } |
198 | } |
85 | |
199 | |
86 | static void |
200 | 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) |
201 | send_req (aio_req req) |
99 | { |
202 | { |
100 | nreqs++; |
203 | nreqs++; |
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204 | |
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205 | pthread_mutex_lock (&reqlock); |
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206 | |
101 | req->next = 0; |
207 | req->next = 0; |
102 | |
208 | |
103 | if (qe) |
209 | if (reqe) |
104 | { |
210 | { |
105 | qe->next = req; |
211 | reqe->next = req; |
106 | qe = req; |
212 | reqe = req; |
107 | } |
213 | } |
108 | else |
214 | else |
109 | qe = qs = req; |
215 | reqe = reqs = req; |
110 | |
216 | |
111 | send_reqs (); |
217 | pthread_cond_signal (&reqwait); |
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218 | pthread_mutex_unlock (&reqlock); |
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219 | |
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220 | while (nreqs > max_outstanding) |
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221 | { |
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222 | poll_wait (); |
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223 | poll_cb (); |
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224 | } |
112 | } |
225 | } |
113 | |
226 | |
114 | static void |
227 | static void |
115 | end_thread (void) |
228 | end_thread (void) |
116 | { |
229 | { |
… | |
… | |
120 | |
233 | |
121 | send_req (req); |
234 | send_req (req); |
122 | } |
235 | } |
123 | |
236 | |
124 | static void |
237 | static void |
125 | read_write (pTHX_ |
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126 | int dowrite, int fd, off_t offset, size_t length, |
238 | read_write (int dowrite, int fd, off_t offset, size_t length, |
127 | SV *data, STRLEN dataoffset, SV *callback) |
239 | SV *data, STRLEN dataoffset, SV *callback) |
128 | { |
240 | { |
129 | aio_req req; |
241 | aio_req req; |
130 | STRLEN svlen; |
242 | STRLEN svlen; |
131 | char *svptr = SvPV (data, svlen); |
243 | char *svptr = SvPV (data, svlen); |
… | |
… | |
168 | req->callback = SvREFCNT_inc (callback); |
280 | req->callback = SvREFCNT_inc (callback); |
169 | |
281 | |
170 | send_req (req); |
282 | send_req (req); |
171 | } |
283 | } |
172 | |
284 | |
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 * |
285 | static void * |
240 | aio_proc (void *thr_arg) |
286 | aio_proc (void *thr_arg) |
241 | { |
287 | { |
242 | aio_req req; |
288 | aio_req req; |
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289 | int type; |
243 | |
290 | |
244 | /* then loop */ |
291 | do |
245 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
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246 | { |
292 | { |
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293 | pthread_mutex_lock (&reqlock); |
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294 | |
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295 | for (;;) |
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296 | { |
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297 | req = reqs; |
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298 | |
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299 | if (reqs) |
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300 | { |
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301 | reqs = reqs->next; |
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302 | if (!reqs) reqe = 0; |
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303 | } |
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304 | |
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305 | if (req) |
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306 | break; |
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307 | |
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308 | pthread_cond_wait (&reqwait, &reqlock); |
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309 | } |
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310 | |
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311 | pthread_mutex_unlock (&reqlock); |
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312 | |
247 | errno = 0; /* strictly unnecessary */ |
313 | errno = 0; /* strictly unnecessary */ |
248 | |
314 | |
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315 | type = req->type; |
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316 | |
249 | switch (req->type) |
317 | switch (type) |
250 | { |
318 | { |
251 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
319 | 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; |
320 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
253 | #if SYS_readahead |
321 | #if SYS_readahead |
254 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
322 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
255 | #else |
323 | #else |
256 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
324 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
257 | #endif |
325 | #endif |
… | |
… | |
266 | |
334 | |
267 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
335 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
268 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
336 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
269 | |
337 | |
270 | case REQ_QUIT: |
338 | case REQ_QUIT: |
271 | write (respipe[1], (void *)&req, sizeof (req)); |
339 | break; |
272 | return 0; |
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273 | |
340 | |
274 | default: |
341 | default: |
275 | req->result = ENOSYS; |
342 | req->result = ENOSYS; |
276 | break; |
343 | break; |
277 | } |
344 | } |
278 | |
345 | |
279 | req->errorno = errno; |
346 | req->errorno = errno; |
280 | write (respipe[1], (void *)&req, sizeof (req)); |
347 | |
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348 | pthread_mutex_lock (&reslock); |
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349 | |
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350 | req->next = 0; |
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351 | |
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352 | if (rese) |
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353 | { |
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354 | rese->next = req; |
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355 | rese = req; |
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356 | } |
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357 | else |
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358 | { |
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359 | rese = ress = req; |
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360 | |
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361 | /* write a dummy byte to the pipe so fh becomes ready */ |
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362 | write (respipe [1], &respipe, 1); |
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363 | } |
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364 | |
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365 | pthread_mutex_unlock (&reslock); |
281 | } |
366 | } |
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367 | while (type != REQ_QUIT); |
282 | |
368 | |
283 | return 0; |
369 | return 0; |
284 | } |
370 | } |
285 | |
371 | |
286 | MODULE = IO::AIO PACKAGE = IO::AIO |
372 | MODULE = IO::AIO PACKAGE = IO::AIO |
287 | |
373 | |
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374 | PROTOTYPES: ENABLE |
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375 | |
288 | BOOT: |
376 | BOOT: |
289 | { |
377 | { |
290 | if (pipe (reqpipe) || pipe (respipe)) |
378 | if (pipe (respipe)) |
291 | croak ("unable to initialize request or result pipe"); |
379 | croak ("unable to initialize result pipe"); |
292 | |
380 | |
293 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
381 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
294 | croak ("cannot set result pipe to nonblocking mode"); |
382 | croak ("cannot set result pipe to nonblocking mode"); |
295 | |
383 | |
296 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
384 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
297 | croak ("cannot set result pipe to nonblocking mode"); |
385 | croak ("cannot set result pipe to nonblocking mode"); |
298 | } |
386 | } |
299 | |
387 | |
300 | void |
388 | void |
301 | min_parallel(nthreads) |
389 | min_parallel(nthreads) |
… | |
… | |
319 | } |
407 | } |
320 | |
408 | |
321 | while (started > nthreads) |
409 | while (started > nthreads) |
322 | { |
410 | { |
323 | poll_wait (); |
411 | poll_wait (); |
324 | poll_cb (aTHX); |
412 | poll_cb (); |
325 | } |
413 | } |
326 | } |
414 | } |
327 | |
415 | |
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416 | int |
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417 | max_outstanding(nreqs) |
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418 | int nreqs |
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419 | PROTOTYPE: $ |
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420 | CODE: |
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421 | RETVAL = max_outstanding; |
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422 | max_outstanding = nreqs; |
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423 | |
328 | void |
424 | void |
329 | aio_open(pathname,flags,mode,callback) |
425 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
330 | SV * pathname |
426 | SV * pathname |
331 | int flags |
427 | int flags |
332 | int mode |
428 | int mode |
333 | SV * callback |
429 | SV * callback |
334 | PROTOTYPE: $$$$ |
430 | PROTOTYPE: $$$;$ |
335 | CODE: |
431 | CODE: |
336 | { |
432 | { |
337 | aio_req req; |
433 | aio_req req; |
338 | |
434 | |
339 | Newz (0, req, 1, aio_cb); |
435 | Newz (0, req, 1, aio_cb); |
… | |
… | |
350 | |
446 | |
351 | send_req (req); |
447 | send_req (req); |
352 | } |
448 | } |
353 | |
449 | |
354 | void |
450 | void |
355 | aio_close(fh,callback) |
451 | aio_close(fh,callback=&PL_sv_undef) |
356 | InputStream fh |
452 | InputStream fh |
357 | SV * callback |
453 | SV * callback |
358 | PROTOTYPE: $$ |
454 | PROTOTYPE: $;$ |
359 | ALIAS: |
455 | ALIAS: |
360 | aio_close = REQ_CLOSE |
456 | aio_close = REQ_CLOSE |
361 | aio_fsync = REQ_FSYNC |
457 | aio_fsync = REQ_FSYNC |
362 | aio_fdatasync = REQ_FDATASYNC |
458 | aio_fdatasync = REQ_FDATASYNC |
363 | CODE: |
459 | CODE: |
… | |
… | |
375 | |
471 | |
376 | send_req (req); |
472 | send_req (req); |
377 | } |
473 | } |
378 | |
474 | |
379 | void |
475 | void |
380 | aio_read(fh,offset,length,data,dataoffset,callback) |
476 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
381 | InputStream fh |
477 | InputStream fh |
382 | UV offset |
478 | UV offset |
383 | IV length |
479 | IV length |
384 | SV * data |
480 | SV * data |
385 | IV dataoffset |
481 | IV dataoffset |
386 | SV * callback |
482 | SV * callback |
387 | PROTOTYPE: $$$$$$ |
483 | PROTOTYPE: $$$$$;$ |
388 | CODE: |
484 | CODE: |
389 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
485 | read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
390 | |
486 | |
391 | void |
487 | void |
392 | aio_write(fh,offset,length,data,dataoffset,callback) |
488 | aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
393 | OutputStream fh |
489 | OutputStream fh |
394 | UV offset |
490 | UV offset |
395 | IV length |
491 | IV length |
396 | SV * data |
492 | SV * data |
397 | IV dataoffset |
493 | IV dataoffset |
398 | SV * callback |
494 | SV * callback |
399 | PROTOTYPE: $$$$$$ |
495 | PROTOTYPE: $$$$$;$ |
400 | CODE: |
496 | CODE: |
401 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
497 | read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
402 | |
498 | |
403 | void |
499 | void |
404 | aio_readahead(fh,offset,length,callback) |
500 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
405 | InputStream fh |
501 | InputStream fh |
406 | UV offset |
502 | UV offset |
407 | IV length |
503 | IV length |
408 | SV * callback |
504 | SV * callback |
409 | PROTOTYPE: $$$$ |
505 | PROTOTYPE: $$$;$ |
410 | CODE: |
506 | CODE: |
411 | { |
507 | { |
412 | aio_req req; |
508 | aio_req req; |
413 | |
509 | |
414 | if (length < 0) |
510 | if (length < 0) |
… | |
… | |
427 | |
523 | |
428 | send_req (req); |
524 | send_req (req); |
429 | } |
525 | } |
430 | |
526 | |
431 | void |
527 | void |
432 | aio_stat(fh_or_path,callback) |
528 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
433 | SV * fh_or_path |
529 | SV * fh_or_path |
434 | SV * callback |
530 | SV * callback |
435 | PROTOTYPE: $$ |
|
|
436 | ALIAS: |
531 | ALIAS: |
|
|
532 | aio_stat = REQ_STAT |
437 | aio_lstat = 1 |
533 | aio_lstat = REQ_LSTAT |
438 | CODE: |
534 | CODE: |
439 | { |
535 | { |
440 | aio_req req; |
536 | aio_req req; |
441 | |
537 | |
442 | Newz (0, req, 1, aio_cb); |
538 | Newz (0, req, 1, aio_cb); |
… | |
… | |
449 | if (!req->statdata) |
545 | if (!req->statdata) |
450 | croak ("out of memory during aio_req->statdata allocation"); |
546 | croak ("out of memory during aio_req->statdata allocation"); |
451 | |
547 | |
452 | if (SvPOK (fh_or_path)) |
548 | if (SvPOK (fh_or_path)) |
453 | { |
549 | { |
454 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
550 | req->type = ix; |
455 | req->data = newSVsv (fh_or_path); |
551 | req->data = newSVsv (fh_or_path); |
456 | req->dataptr = SvPV_nolen (req->data); |
552 | req->dataptr = SvPV_nolen (req->data); |
457 | } |
553 | } |
458 | else |
554 | else |
459 | { |
555 | { |
… | |
… | |
465 | |
561 | |
466 | send_req (req); |
562 | send_req (req); |
467 | } |
563 | } |
468 | |
564 | |
469 | void |
565 | void |
470 | aio_unlink(pathname,callback) |
566 | aio_unlink(pathname,callback=&PL_sv_undef) |
471 | SV * pathname |
567 | SV * pathname |
472 | SV * callback |
568 | SV * callback |
473 | PROTOTYPE: $$ |
|
|
474 | CODE: |
569 | CODE: |
475 | { |
570 | { |
476 | aio_req req; |
571 | aio_req req; |
477 | |
572 | |
478 | Newz (0, req, 1, aio_cb); |
573 | Newz (0, req, 1, aio_cb); |
… | |
… | |
486 | req->callback = SvREFCNT_inc (callback); |
581 | req->callback = SvREFCNT_inc (callback); |
487 | |
582 | |
488 | send_req (req); |
583 | send_req (req); |
489 | } |
584 | } |
490 | |
585 | |
|
|
586 | void |
|
|
587 | flush() |
|
|
588 | PROTOTYPE: |
|
|
589 | CODE: |
|
|
590 | while (nreqs) |
|
|
591 | { |
|
|
592 | poll_wait (); |
|
|
593 | poll_cb (); |
|
|
594 | } |
|
|
595 | |
|
|
596 | void |
|
|
597 | poll() |
|
|
598 | PROTOTYPE: |
|
|
599 | CODE: |
|
|
600 | if (nreqs) |
|
|
601 | { |
|
|
602 | poll_wait (); |
|
|
603 | poll_cb (); |
|
|
604 | } |
|
|
605 | |
491 | int |
606 | int |
492 | poll_fileno() |
607 | poll_fileno() |
493 | PROTOTYPE: |
608 | PROTOTYPE: |
494 | CODE: |
609 | CODE: |
495 | RETVAL = respipe[0]; |
610 | RETVAL = respipe [0]; |
496 | OUTPUT: |
611 | OUTPUT: |
497 | RETVAL |
612 | RETVAL |
498 | |
613 | |
499 | int |
614 | int |
500 | poll_cb(...) |
615 | poll_cb(...) |
501 | PROTOTYPE: |
616 | PROTOTYPE: |
502 | CODE: |
617 | CODE: |
503 | RETVAL = poll_cb (aTHX); |
618 | RETVAL = poll_cb (); |
504 | OUTPUT: |
619 | OUTPUT: |
505 | RETVAL |
620 | RETVAL |
506 | |
621 | |
507 | void |
622 | void |
508 | poll_wait() |
623 | poll_wait() |
509 | PROTOTYPE: |
624 | PROTOTYPE: |
510 | CODE: |
625 | CODE: |
|
|
626 | if (nreqs) |
511 | poll_wait (); |
627 | poll_wait (); |
512 | |
628 | |
513 | int |
629 | int |
514 | nreqs() |
630 | nreqs() |
515 | PROTOTYPE: |
631 | PROTOTYPE: |
516 | CODE: |
632 | CODE: |