1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include <sys/types.h> |
5 | #include <sys/types.h> |
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6 | #include <sys/stat.h> |
6 | #include <unistd.h> |
7 | #include <unistd.h> |
7 | #include <fcntl.h> |
8 | #include <fcntl.h> |
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9 | #include <signal.h> |
8 | #include <sched.h> |
10 | #include <sched.h> |
9 | |
11 | |
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12 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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13 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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14 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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15 | |
10 | #define STACKSIZE 2048 /* yeah */ |
16 | #define STACKSIZE 1024 /* yeah */ |
11 | |
17 | |
12 | #define REQ_QUIT 0 |
18 | enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT}; |
13 | #define REQ_READ 1 |
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14 | #define REQ_WRITE 2 |
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15 | |
19 | |
16 | typedef struct { |
20 | typedef struct { |
17 | char stack[STACKSIZE]; |
21 | char stack[STACKSIZE]; |
18 | } aio_thread; |
22 | } aio_thread; |
19 | |
23 | |
20 | typedef struct { |
24 | typedef struct { |
21 | int type; |
25 | int type; |
22 | aio_thread *thread; |
26 | aio_thread *thread; |
23 | |
27 | |
24 | /* read/write */ |
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25 | int fd; |
28 | int fd; |
26 | off_t offset; |
29 | off_t offset; |
27 | size_t length; |
30 | size_t length; |
28 | ssize_t result; |
31 | ssize_t result; |
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32 | mode_t mode; /* open */ |
29 | int errorno; |
33 | int errorno; |
30 | |
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31 | SV *data, *callback; |
34 | SV *data, *callback; |
32 | void *dataptr; |
35 | void *dataptr; |
33 | STRLEN dataoffset; |
36 | STRLEN dataoffset; |
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37 | |
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38 | struct stat64 *statdata; |
34 | } aio_cb; |
39 | } aio_cb; |
35 | |
40 | |
36 | typedef aio_cb *aio_req; |
41 | typedef aio_cb *aio_req; |
37 | |
42 | |
38 | static int started; |
43 | static int started; |
… | |
… | |
65 | req->type = REQ_QUIT; |
70 | req->type = REQ_QUIT; |
66 | write (reqpipe[1], &req, sizeof (aio_req)); |
71 | write (reqpipe[1], &req, sizeof (aio_req)); |
67 | } |
72 | } |
68 | |
73 | |
69 | static void |
74 | static void |
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75 | send_req (aio_req req) |
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76 | { |
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77 | nreqs++; |
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78 | write (reqpipe[1], &req, sizeof (aio_req)); |
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79 | } |
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80 | |
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81 | static void |
70 | read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, |
82 | read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, |
71 | SV *data, STRLEN dataoffset, SV*callback) |
83 | SV *data, STRLEN dataoffset, SV*callback) |
72 | { |
84 | { |
73 | aio_req req; |
85 | aio_req req; |
74 | STRLEN svlen; |
86 | STRLEN svlen; |
75 | char *svptr = SvPV (data, svlen); |
87 | char *svptr = SvPV (data, svlen); |
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88 | |
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89 | SvUPGRADE (data, SVt_PV); |
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90 | SvPOK_on (data); |
76 | |
91 | |
77 | if (dataoffset < 0) |
92 | if (dataoffset < 0) |
78 | dataoffset += svlen; |
93 | dataoffset += svlen; |
79 | |
94 | |
80 | if (dataoffset < 0 || dataoffset > svlen) |
95 | if (dataoffset < 0 || dataoffset > svlen) |
… | |
… | |
93 | } |
108 | } |
94 | |
109 | |
95 | if (length < 0) |
110 | if (length < 0) |
96 | croak ("length must not be negative"); |
111 | croak ("length must not be negative"); |
97 | |
112 | |
98 | New (0, req, 1, aio_cb); |
113 | Newz (0, req, 1, aio_cb); |
99 | |
114 | |
100 | if (!req) |
115 | if (!req) |
101 | croak ("out of memory during aio_req allocation"); |
116 | croak ("out of memory during aio_req allocation"); |
102 | |
117 | |
103 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
118 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
… | |
… | |
106 | req->length = length; |
121 | req->length = length; |
107 | req->data = SvREFCNT_inc (data); |
122 | req->data = SvREFCNT_inc (data); |
108 | req->dataptr = (char *)svptr + dataoffset; |
123 | req->dataptr = (char *)svptr + dataoffset; |
109 | req->callback = SvREFCNT_inc (callback); |
124 | req->callback = SvREFCNT_inc (callback); |
110 | |
125 | |
111 | nreqs++; |
126 | send_req (req); |
112 | write (reqpipe[1], &req, sizeof (aio_req)); |
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113 | } |
127 | } |
114 | |
128 | |
115 | static int |
129 | static int |
116 | poll_cb (pTHX) |
130 | poll_cb (pTHX) |
117 | { |
131 | { |
… | |
… | |
133 | |
147 | |
134 | if (req->type == REQ_READ) |
148 | if (req->type == REQ_READ) |
135 | SvCUR_set (req->data, req->dataoffset |
149 | SvCUR_set (req->data, req->dataoffset |
136 | + req->result > 0 ? req->result : 0); |
150 | + req->result > 0 ? req->result : 0); |
137 | |
151 | |
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152 | if (req->data) |
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153 | SvREFCNT_dec (req->data); |
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154 | |
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155 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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156 | { |
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157 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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158 | PL_laststatval = req->result; |
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159 | PL_statcache.st_dev = req->statdata->st_dev; |
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160 | PL_statcache.st_ino = req->statdata->st_ino; |
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161 | PL_statcache.st_mode = req->statdata->st_mode; |
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162 | PL_statcache.st_nlink = req->statdata->st_nlink; |
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163 | PL_statcache.st_uid = req->statdata->st_uid; |
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164 | PL_statcache.st_gid = req->statdata->st_gid; |
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165 | PL_statcache.st_rdev = req->statdata->st_rdev; |
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166 | PL_statcache.st_size = req->statdata->st_size; |
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167 | PL_statcache.st_atime = req->statdata->st_atime; |
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168 | PL_statcache.st_mtime = req->statdata->st_mtime; |
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169 | PL_statcache.st_ctime = req->statdata->st_ctime; |
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170 | PL_statcache.st_blksize = req->statdata->st_blksize; |
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171 | PL_statcache.st_blocks = req->statdata->st_blocks; |
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172 | |
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173 | Safefree (req->statdata); |
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174 | } |
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175 | |
138 | PUSHMARK (SP); |
176 | PUSHMARK (SP); |
139 | XPUSHs (sv_2mortal (newSViv (req->result))); |
177 | XPUSHs (sv_2mortal (newSViv (req->result))); |
140 | PUTBACK; |
178 | PUTBACK; |
141 | call_sv (req->callback, G_VOID); |
179 | call_sv (req->callback, G_VOID); |
142 | SPAGAIN; |
180 | SPAGAIN; |
143 | |
181 | |
144 | SvREFCNT_dec (req->data); |
182 | if (req->callback) |
145 | SvREFCNT_dec (req->callback); |
183 | SvREFCNT_dec (req->callback); |
146 | |
184 | |
147 | errno = errorno; |
185 | errno = errorno; |
148 | nreqs--; |
186 | nreqs--; |
149 | count++; |
187 | count++; |
150 | } |
188 | } |
… | |
… | |
153 | } |
191 | } |
154 | |
192 | |
155 | return count; |
193 | return count; |
156 | } |
194 | } |
157 | |
195 | |
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196 | static sigset_t fullsigset; |
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197 | |
158 | #undef errno |
198 | #undef errno |
159 | #include <asm/unistd.h> |
199 | #include <asm/unistd.h> |
160 | |
200 | |
161 | static int |
201 | static int |
162 | aio_proc(void *thr_arg) |
202 | aio_proc(void *thr_arg) |
163 | { |
203 | { |
164 | aio_thread *thr = thr_arg; |
204 | aio_thread *thr = thr_arg; |
165 | int sig; |
205 | aio_req req; |
166 | int errno; |
206 | int errno; |
167 | aio_req req; |
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168 | |
207 | |
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208 | /* this is very much x86 and kernel-specific :(:(:( */ |
169 | /* we rely on gcc's ability to create closures. */ |
209 | /* we rely on gcc's ability to create closures. */ |
170 | _syscall3(int,lseek,int,fd,off_t,offset,int,whence); |
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171 | _syscall3(int,read,int,fd,char *,buf,off_t,count); |
210 | _syscall3(int,read,int,fd,char *,buf,size_t,count) |
172 | _syscall3(int,write,int,fd,char *,buf,off_t,count); |
211 | _syscall3(int,write,int,fd,char *,buf,size_t,count) |
173 | |
212 | |
174 | /* first get rid of any signals */ |
213 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) |
175 | for (sig = 1; sig < _NSIG; sig++) |
214 | _syscall1(int,close,int,fd) |
176 | signal (sig, SIG_DFL); |
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177 | |
215 | |
178 | signal (SIGPIPE, SIG_IGN); |
216 | _syscall5(int,pread,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
179 | |
217 | _syscall5(int,pwrite,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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218 | |
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219 | _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) |
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220 | _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) |
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221 | _syscall2(int,fstat64, int, fd, struct stat64 *, buf) |
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222 | |
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223 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
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224 | |
180 | /* then loop */ |
225 | /* then loop */ |
181 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
226 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
182 | { |
227 | { |
183 | req->thread = thr; |
228 | req->thread = thr; |
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229 | errno = 0; /* strictly unnecessary */ |
184 | |
230 | |
185 | if (req->type == REQ_READ || req->type == REQ_WRITE) |
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186 | { |
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187 | errno = 0; |
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188 | |
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189 | if (lseek (req->fd, req->offset, SEEK_SET) == req->offset) |
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190 | { |
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191 | if (req->type == REQ_READ) |
231 | if (req->type == REQ_READ) |
192 | req->result = read (req->fd, req->dataptr, req->length); |
232 | req->result = pread (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); |
193 | else |
233 | else if (req->type == REQ_WRITE) |
194 | req->result = write(req->fd, req->dataptr, req->length); |
234 | req->result = pwrite(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); |
195 | } |
235 | else if (req->type == REQ_OPEN) |
196 | |
236 | req->result = open (req->dataptr, req->fd, req->mode); |
197 | req->errorno = errno; |
237 | else if (req->type == REQ_CLOSE) |
198 | } |
238 | req->result = close (req->fd); |
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239 | else if (req->type == REQ_STAT) |
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240 | req->result = stat64 (req->dataptr, req->statdata); |
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241 | else if (req->type == REQ_LSTAT) |
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242 | req->result = lstat64 (req->dataptr, req->statdata); |
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243 | else if (req->type == REQ_FSTAT) |
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244 | req->result = fstat64 (req->fd, req->statdata); |
199 | else |
245 | else |
200 | { |
246 | { |
201 | write (respipe[1], (void *)&req, sizeof (req)); |
247 | write (respipe[1], (void *)&req, sizeof (req)); |
202 | break; |
248 | break; |
203 | } |
249 | } |
204 | |
250 | |
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251 | req->errorno = errno; |
205 | write (respipe[1], (void *)&req, sizeof (req)); |
252 | write (respipe[1], (void *)&req, sizeof (req)); |
206 | } |
253 | } |
207 | |
254 | |
208 | return 0; |
255 | return 0; |
209 | } |
256 | } |
210 | |
257 | |
211 | MODULE = Linux::AIO PACKAGE = Linux::AIO |
258 | MODULE = Linux::AIO PACKAGE = Linux::AIO |
212 | |
259 | |
213 | BOOT: |
260 | BOOT: |
214 | { |
261 | { |
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262 | sigfillset (&fullsigset); |
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263 | sigdelset (&fullsigset, SIGTERM); |
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264 | sigdelset (&fullsigset, SIGQUIT); |
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265 | sigdelset (&fullsigset, SIGABRT); |
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266 | sigdelset (&fullsigset, SIGINT); |
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267 | |
215 | if (pipe (reqpipe) || pipe (respipe)) |
268 | if (pipe (reqpipe) || pipe (respipe)) |
216 | croak ("unable to initialize request or result pipe"); |
269 | croak ("unable to initialize request or result pipe"); |
217 | |
270 | |
218 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
271 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
219 | croak ("cannot set result pipe to nonblocking mode"); |
272 | croak ("cannot set result pipe to nonblocking mode"); |
… | |
… | |
237 | { |
290 | { |
238 | end_thread (); |
291 | end_thread (); |
239 | cur--; |
292 | cur--; |
240 | } |
293 | } |
241 | |
294 | |
242 | poll_cb (); |
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243 | while (started > nthreads) |
295 | while (started > nthreads) |
244 | { |
296 | { |
245 | sched_yield (); |
297 | fd_set rfd; |
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298 | FD_ZERO(&rfd); |
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299 | FD_SET(respipe[0], &rfd); |
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300 | |
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301 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
246 | poll_cb (); |
302 | poll_cb (); |
247 | } |
303 | } |
248 | |
304 | |
249 | void |
305 | void |
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306 | aio_open(pathname,flags,mode,callback) |
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307 | SV * pathname |
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308 | int flags |
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309 | int mode |
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310 | SV * callback |
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311 | PROTOTYPE: $$$$ |
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312 | CODE: |
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313 | aio_req req; |
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314 | |
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315 | Newz (0, req, 1, aio_cb); |
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316 | |
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317 | if (!req) |
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318 | croak ("out of memory during aio_req allocation"); |
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319 | |
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320 | req->type = REQ_OPEN; |
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321 | req->data = newSVsv (pathname); |
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322 | req->dataptr = SvPV_nolen (req->data); |
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323 | req->fd = flags; |
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324 | req->mode = mode; |
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325 | req->callback = SvREFCNT_inc (callback); |
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326 | |
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327 | send_req (req); |
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328 | |
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329 | void |
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330 | aio_close(fh,callback) |
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331 | InputStream fh |
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332 | SV * callback |
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333 | PROTOTYPE: $$ |
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334 | CODE: |
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335 | aio_req req; |
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336 | |
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337 | Newz (0, req, 1, aio_cb); |
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338 | |
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339 | if (!req) |
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340 | croak ("out of memory during aio_req allocation"); |
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341 | |
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342 | req->type = REQ_CLOSE; |
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343 | req->fd = PerlIO_fileno (fh); |
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344 | req->callback = SvREFCNT_inc (callback); |
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345 | |
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346 | send_req (req); |
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347 | |
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348 | void |
250 | aio_read(fh,offset,length,data,dataoffset,callback) |
349 | aio_read(fh,offset,length,data,dataoffset,callback) |
251 | PerlIO * fh |
350 | InputStream fh |
252 | UV offset |
351 | UV offset |
253 | STRLEN length |
352 | IV length |
254 | SV * data |
353 | SV * data |
255 | STRLEN dataoffset |
354 | IV dataoffset |
256 | SV * callback |
355 | SV * callback |
257 | PROTOTYPE: $$$$$$ |
356 | PROTOTYPE: $$$$$$ |
258 | ALIAS: |
357 | CODE: |
259 | aio_write = 1 |
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260 | CODE: |
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261 | SvUPGRADE (data, SVt_PV); |
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262 | SvPOK_on (data); |
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263 | read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
358 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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359 | |
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360 | void |
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361 | aio_write(fh,offset,length,data,dataoffset,callback) |
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362 | OutputStream fh |
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363 | UV offset |
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364 | IV length |
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365 | SV * data |
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366 | IV dataoffset |
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367 | SV * callback |
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368 | PROTOTYPE: $$$$$$ |
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369 | CODE: |
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370 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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371 | |
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372 | void |
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373 | aio_stat(fh_or_path,callback) |
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374 | SV * fh_or_path |
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375 | SV * callback |
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376 | PROTOTYPE: $$ |
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377 | ALIAS: |
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378 | aio_lstat = 1 |
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379 | CODE: |
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380 | aio_req req; |
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381 | |
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382 | Newz (0, req, 1, aio_cb); |
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383 | |
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384 | if (!req) |
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385 | croak ("out of memory during aio_req allocation"); |
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386 | |
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387 | New (0, req->statdata, 1, struct stat64); |
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388 | |
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389 | if (!req->statdata) |
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390 | croak ("out of memory during aio_req->statdata allocation"); |
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391 | |
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392 | if (SvPOK (fh_or_path)) |
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393 | { |
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394 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
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395 | req->data = newSVsv (fh_or_path); |
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396 | req->dataptr = SvPV_nolen (req->data); |
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397 | } |
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398 | else |
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399 | { |
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400 | req->type = REQ_FSTAT; |
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401 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
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402 | } |
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403 | |
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404 | req->callback = SvREFCNT_inc (callback); |
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405 | |
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406 | send_req (req); |
264 | |
407 | |
265 | int |
408 | int |
266 | poll_fileno() |
409 | poll_fileno() |
267 | PROTOTYPE: |
410 | PROTOTYPE: |
268 | CODE: |
411 | CODE: |