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17 | |
17 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
18 | 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 ;) */ |
19 | 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 ;) */ |
20 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | |
21 | |
22 | #if __i386 || __amd64 |
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23 | # define STACKSIZE ( 256 * sizeof (long)) |
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24 | #elif __ia64 |
22 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
23 | # define STACKSIZE 65536 |
26 | #else |
24 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
25 | # define STACKSIZE 4096 |
28 | #endif |
26 | #endif |
29 | |
27 | |
30 | enum { |
28 | enum { |
31 | REQ_QUIT, |
29 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
30 | REQ_OPEN, REQ_CLOSE, |
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55 | |
53 | |
56 | typedef aio_cb *aio_req; |
54 | typedef aio_cb *aio_req; |
57 | |
55 | |
58 | static int started; |
56 | static int started; |
59 | static int nreqs; |
57 | static int nreqs; |
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58 | static int max_outstanding = 1<<30; |
60 | static int respipe [2]; |
59 | static int respipe [2]; |
61 | |
60 | |
62 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
61 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
63 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
62 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
64 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
63 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
65 | |
64 | |
66 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
65 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
67 | static volatile aio_req ress, rese; /* queue start, queue end */ |
66 | static volatile aio_req ress, rese; /* queue start, queue end */ |
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67 | |
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68 | static void |
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69 | poll_wait () |
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70 | { |
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71 | if (!nreqs) |
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72 | return; |
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73 | |
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74 | fd_set rfd; |
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75 | FD_ZERO(&rfd); |
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76 | FD_SET(respipe [0], &rfd); |
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77 | |
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78 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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79 | } |
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80 | |
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81 | static int |
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82 | poll_cb (pTHX) |
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83 | { |
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84 | dSP; |
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85 | int count = 0; |
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86 | aio_req req; |
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87 | |
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88 | { |
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89 | /* read and signals sent by the worker threads */ |
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90 | char buf [32]; |
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91 | while (read (respipe [0], buf, 32) > 0) |
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92 | ; |
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93 | } |
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94 | |
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95 | for (;;) |
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96 | { |
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97 | pthread_mutex_lock (&reslock); |
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98 | |
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99 | req = ress; |
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100 | |
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101 | if (ress) |
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102 | { |
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103 | ress = ress->next; |
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104 | if (!ress) rese = 0; |
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105 | } |
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106 | |
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107 | pthread_mutex_unlock (&reslock); |
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108 | |
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109 | if (!req) |
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110 | break; |
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111 | |
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112 | nreqs--; |
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113 | |
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114 | if (req->type == REQ_QUIT) |
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115 | started--; |
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116 | else |
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117 | { |
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118 | int errorno = errno; |
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119 | errno = req->errorno; |
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120 | |
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121 | if (req->type == REQ_READ) |
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122 | SvCUR_set (req->data, req->dataoffset |
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123 | + req->result > 0 ? req->result : 0); |
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124 | |
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125 | if (req->data) |
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126 | SvREFCNT_dec (req->data); |
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127 | |
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128 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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129 | { |
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130 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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131 | PL_laststatval = req->result; |
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132 | PL_statcache = *(req->statdata); |
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133 | |
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134 | Safefree (req->statdata); |
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135 | } |
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136 | |
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137 | PUSHMARK (SP); |
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138 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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139 | |
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140 | if (req->type == REQ_OPEN) |
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141 | { |
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142 | /* convert fd to fh */ |
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143 | SV *fh; |
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144 | |
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145 | PUTBACK; |
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146 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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147 | SPAGAIN; |
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148 | |
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149 | fh = POPs; |
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150 | |
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151 | PUSHMARK (SP); |
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152 | XPUSHs (fh); |
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153 | } |
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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 | 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 | } |
68 | |
171 | |
69 | static void *aio_proc(void *arg); |
172 | static void *aio_proc(void *arg); |
70 | |
173 | |
71 | static void |
174 | static void |
72 | start_thread (void) |
175 | start_thread (void) |
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105 | else |
208 | else |
106 | reqe = reqs = req; |
209 | reqe = reqs = req; |
107 | |
210 | |
108 | pthread_cond_signal (&reqwait); |
211 | pthread_cond_signal (&reqwait); |
109 | pthread_mutex_unlock (&reqlock); |
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 | } |
110 | } |
219 | } |
111 | |
220 | |
112 | static void |
221 | static void |
113 | end_thread (void) |
222 | end_thread (void) |
114 | { |
223 | { |
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166 | req->callback = SvREFCNT_inc (callback); |
275 | req->callback = SvREFCNT_inc (callback); |
167 | |
276 | |
168 | send_req (req); |
277 | send_req (req); |
169 | } |
278 | } |
170 | |
279 | |
171 | static void |
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172 | poll_wait () |
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173 | { |
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174 | if (!nreqs) |
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175 | return; |
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176 | |
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177 | fd_set rfd; |
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178 | FD_ZERO(&rfd); |
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179 | FD_SET(respipe [0], &rfd); |
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180 | |
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181 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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182 | } |
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183 | |
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184 | static int |
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185 | poll_cb (pTHX) |
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186 | { |
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187 | dSP; |
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188 | int count = 0; |
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189 | aio_req req; |
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190 | |
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191 | { |
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192 | /* read and signals sent by the worker threads */ |
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193 | char buf [32]; |
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194 | while (read (respipe [0], buf, 32) > 0) |
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195 | ; |
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196 | } |
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197 | |
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198 | for (;;) |
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199 | { |
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200 | pthread_mutex_lock (&reslock); |
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201 | |
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202 | req = ress; |
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203 | |
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204 | if (ress) |
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205 | { |
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206 | ress = ress->next; |
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207 | if (!ress) rese = 0; |
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208 | } |
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209 | |
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210 | pthread_mutex_unlock (&reslock); |
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211 | |
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212 | if (!req) |
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213 | break; |
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214 | |
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215 | nreqs--; |
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216 | |
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217 | if (req->type == REQ_QUIT) |
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218 | started--; |
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219 | else |
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220 | { |
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221 | int errorno = errno; |
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222 | errno = req->errorno; |
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223 | |
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224 | if (req->type == REQ_READ) |
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225 | SvCUR_set (req->data, req->dataoffset |
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226 | + req->result > 0 ? req->result : 0); |
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227 | |
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228 | if (req->data) |
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229 | SvREFCNT_dec (req->data); |
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230 | |
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231 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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232 | { |
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233 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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234 | PL_laststatval = req->result; |
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235 | PL_statcache = *(req->statdata); |
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236 | |
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237 | Safefree (req->statdata); |
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238 | } |
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239 | |
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240 | PUSHMARK (SP); |
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241 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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242 | |
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243 | if (req->type == REQ_OPEN) |
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244 | { |
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245 | /* convert fd to fh */ |
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246 | SV *fh; |
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247 | |
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248 | PUTBACK; |
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249 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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250 | SPAGAIN; |
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251 | |
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252 | fh = POPs; |
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253 | |
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254 | PUSHMARK (SP); |
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255 | XPUSHs (fh); |
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256 | } |
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257 | |
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258 | PUTBACK; |
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259 | call_sv (req->callback, G_VOID | G_EVAL); |
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260 | SPAGAIN; |
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261 | |
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262 | if (req->callback) |
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263 | SvREFCNT_dec (req->callback); |
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264 | |
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265 | errno = errorno; |
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266 | count++; |
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267 | } |
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268 | |
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269 | Safefree (req); |
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270 | } |
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271 | |
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272 | return count; |
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273 | } |
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274 | |
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275 | static void * |
280 | static void * |
276 | aio_proc (void *thr_arg) |
281 | aio_proc (void *thr_arg) |
277 | { |
282 | { |
278 | aio_req req; |
283 | aio_req req; |
279 | int type; |
284 | int type; |
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398 | { |
403 | { |
399 | poll_wait (); |
404 | poll_wait (); |
400 | poll_cb (aTHX); |
405 | poll_cb (aTHX); |
401 | } |
406 | } |
402 | } |
407 | } |
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408 | |
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409 | int |
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410 | max_outstanding(nreqs) |
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411 | int nreqs |
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412 | PROTOTYPE: $ |
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413 | CODE: |
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414 | RETVAL = max_outstanding; |
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415 | max_outstanding = nreqs; |
403 | |
416 | |
404 | void |
417 | void |
405 | aio_open(pathname,flags,mode,callback) |
418 | aio_open(pathname,flags,mode,callback) |
406 | SV * pathname |
419 | SV * pathname |
407 | int flags |
420 | int flags |