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1 | #define PERL_NO_GET_CONTEXT |
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2 | |
1 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
2 | #include "perl.h" |
4 | #include "perl.h" |
3 | #include "XSUB.h" |
5 | #include "XSUB.h" |
4 | |
6 | |
5 | #include <sys/types.h> |
7 | #include <sys/types.h> |
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8 | #include <sys/stat.h> |
6 | #include <unistd.h> |
9 | #include <unistd.h> |
7 | #include <fcntl.h> |
10 | #include <fcntl.h> |
8 | #include <signal.h> |
11 | #include <signal.h> |
9 | #include <sched.h> |
12 | #include <sched.h> |
10 | |
13 | |
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14 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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15 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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16 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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17 | |
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18 | #ifndef __NR_pread64 |
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19 | # define __NR_pread64 __NR_pread |
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20 | #endif |
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21 | #ifndef __NR_pwrite64 |
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22 | # define __NR_pwrite64 __NR_pwrite |
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23 | #endif |
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24 | |
11 | #define STACKSIZE 1024 /* yeah */ |
25 | #define STACKSIZE 1024 /* yeah */ |
12 | |
26 | |
13 | enum { REQ_QUIT, REQ_READ, REQ_WRITE, REQ_OPEN }; |
27 | enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT}; |
14 | |
28 | |
15 | typedef struct { |
29 | typedef struct { |
16 | char stack[STACKSIZE]; |
30 | char stack[STACKSIZE]; |
17 | } aio_thread; |
31 | } aio_thread; |
18 | |
32 | |
19 | typedef struct { |
33 | typedef struct { |
20 | int type; |
34 | int type; |
21 | aio_thread *thread; |
35 | aio_thread *thread; |
22 | |
36 | |
23 | /* read/write */ |
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24 | int fd; |
37 | int fd; |
25 | off_t offset; |
38 | off_t offset; |
26 | size_t length; |
39 | size_t length; |
27 | ssize_t result; |
40 | ssize_t result; |
28 | mode_t mode; /* open */ |
41 | mode_t mode; /* open */ |
29 | int errorno; |
42 | int errorno; |
30 | SV *data, *callback; |
43 | SV *data, *callback; |
31 | void *dataptr; |
44 | void *dataptr; |
32 | STRLEN dataoffset; |
45 | STRLEN dataoffset; |
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46 | |
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47 | struct stat64 *statdata; |
33 | } aio_cb; |
48 | } aio_cb; |
34 | |
49 | |
35 | typedef aio_cb *aio_req; |
50 | typedef aio_cb *aio_req; |
36 | |
51 | |
37 | static int started; |
52 | static int started; |
… | |
… | |
71 | nreqs++; |
86 | nreqs++; |
72 | write (reqpipe[1], &req, sizeof (aio_req)); |
87 | write (reqpipe[1], &req, sizeof (aio_req)); |
73 | } |
88 | } |
74 | |
89 | |
75 | static void |
90 | static void |
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91 | read_write (pTHX_ |
76 | read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, |
92 | int dowrite, int fd, off_t offset, size_t length, |
77 | SV *data, STRLEN dataoffset, SV*callback) |
93 | SV *data, STRLEN dataoffset, SV*callback) |
78 | { |
94 | { |
79 | aio_req req; |
95 | aio_req req; |
80 | STRLEN svlen; |
96 | STRLEN svlen; |
81 | char *svptr = SvPV (data, svlen); |
97 | char *svptr = SvPV (data, svlen); |
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98 | |
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99 | SvUPGRADE (data, SVt_PV); |
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100 | SvPOK_on (data); |
82 | |
101 | |
83 | if (dataoffset < 0) |
102 | if (dataoffset < 0) |
84 | dataoffset += svlen; |
103 | dataoffset += svlen; |
85 | |
104 | |
86 | if (dataoffset < 0 || dataoffset > svlen) |
105 | if (dataoffset < 0 || dataoffset > svlen) |
… | |
… | |
99 | } |
118 | } |
100 | |
119 | |
101 | if (length < 0) |
120 | if (length < 0) |
102 | croak ("length must not be negative"); |
121 | croak ("length must not be negative"); |
103 | |
122 | |
104 | New (0, req, 1, aio_cb); |
123 | Newz (0, req, 1, aio_cb); |
105 | |
124 | |
106 | if (!req) |
125 | if (!req) |
107 | croak ("out of memory during aio_req allocation"); |
126 | croak ("out of memory during aio_req allocation"); |
108 | |
127 | |
109 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
128 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
… | |
… | |
138 | |
157 | |
139 | if (req->type == REQ_READ) |
158 | if (req->type == REQ_READ) |
140 | SvCUR_set (req->data, req->dataoffset |
159 | SvCUR_set (req->data, req->dataoffset |
141 | + req->result > 0 ? req->result : 0); |
160 | + req->result > 0 ? req->result : 0); |
142 | |
161 | |
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162 | if (req->data) |
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163 | SvREFCNT_dec (req->data); |
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164 | |
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165 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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166 | { |
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167 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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168 | PL_laststatval = req->result; |
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169 | PL_statcache.st_dev = req->statdata->st_dev; |
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170 | PL_statcache.st_ino = req->statdata->st_ino; |
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171 | PL_statcache.st_mode = req->statdata->st_mode; |
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172 | PL_statcache.st_nlink = req->statdata->st_nlink; |
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173 | PL_statcache.st_uid = req->statdata->st_uid; |
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174 | PL_statcache.st_gid = req->statdata->st_gid; |
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175 | PL_statcache.st_rdev = req->statdata->st_rdev; |
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176 | PL_statcache.st_size = req->statdata->st_size; |
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177 | PL_statcache.st_atime = req->statdata->st_atime; |
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178 | PL_statcache.st_mtime = req->statdata->st_mtime; |
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179 | PL_statcache.st_ctime = req->statdata->st_ctime; |
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180 | PL_statcache.st_blksize = req->statdata->st_blksize; |
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181 | PL_statcache.st_blocks = req->statdata->st_blocks; |
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182 | |
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183 | Safefree (req->statdata); |
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184 | } |
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185 | |
143 | PUSHMARK (SP); |
186 | PUSHMARK (SP); |
144 | XPUSHs (sv_2mortal (newSViv (req->result))); |
187 | XPUSHs (sv_2mortal (newSViv (req->result))); |
145 | PUTBACK; |
188 | PUTBACK; |
146 | call_sv (req->callback, G_VOID); |
189 | call_sv (req->callback, G_VOID); |
147 | SPAGAIN; |
190 | SPAGAIN; |
148 | |
191 | |
149 | SvREFCNT_dec (req->data); |
192 | if (req->callback) |
150 | SvREFCNT_dec (req->callback); |
193 | SvREFCNT_dec (req->callback); |
151 | |
194 | |
152 | errno = errorno; |
195 | errno = errorno; |
153 | nreqs--; |
196 | nreqs--; |
154 | count++; |
197 | count++; |
155 | } |
198 | } |
… | |
… | |
167 | |
210 | |
168 | static int |
211 | static int |
169 | aio_proc(void *thr_arg) |
212 | aio_proc(void *thr_arg) |
170 | { |
213 | { |
171 | aio_thread *thr = thr_arg; |
214 | aio_thread *thr = thr_arg; |
172 | int sig; |
215 | aio_req req; |
173 | int errno; |
216 | int errno; |
174 | aio_req req; |
217 | |
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218 | /* this is very much x86 and kernel-specific :(:(:( */ |
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219 | /* we rely on gcc's ability to create closures. */ |
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220 | _syscall3(int,read,int,fd,char *,buf,size_t,count) |
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221 | _syscall3(int,write,int,fd,char *,buf,size_t,count) |
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222 | |
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223 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) |
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224 | _syscall1(int,close,int,fd) |
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225 | |
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226 | _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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227 | _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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228 | |
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229 | _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) |
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230 | _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) |
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231 | _syscall2(int,fstat64, int, fd, struct stat64 *, buf) |
175 | |
232 | |
176 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
233 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
177 | |
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178 | /* we rely on gcc's ability to create closures. */ |
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179 | _syscall3(int,lseek,int,fd,off_t,offset,int,whence); |
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180 | _syscall3(int,read,int,fd,char *,buf,off_t,count); |
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181 | _syscall3(int,write,int,fd,char *,buf,off_t,count); |
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182 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode); |
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183 | |
234 | |
184 | /* then loop */ |
235 | /* then loop */ |
185 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
236 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
186 | { |
237 | { |
187 | req->thread = thr; |
238 | req->thread = thr; |
188 | errno = 0; |
239 | errno = 0; /* strictly unnecessary */ |
189 | |
240 | |
190 | if (req->type == REQ_READ || req->type == REQ_WRITE) |
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191 | { |
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192 | if (lseek (req->fd, req->offset, SEEK_SET) == req->offset) |
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193 | { |
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194 | if (req->type == REQ_READ) |
241 | if (req->type == REQ_READ) |
195 | req->result = read (req->fd, req->dataptr, req->length); |
242 | req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); |
196 | else |
243 | else if (req->type == REQ_WRITE) |
197 | req->result = write(req->fd, req->dataptr, req->length); |
244 | req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); |
198 | } |
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199 | } |
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200 | else if (req->type == REQ_OPEN) |
245 | else if (req->type == REQ_OPEN) |
201 | { |
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202 | req->result = open (req->dataptr, req->fd, req->mode); |
246 | req->result = open (req->dataptr, req->fd, req->mode); |
203 | } |
247 | else if (req->type == REQ_CLOSE) |
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248 | req->result = close (req->fd); |
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249 | else if (req->type == REQ_STAT) |
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250 | req->result = stat64 (req->dataptr, req->statdata); |
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251 | else if (req->type == REQ_LSTAT) |
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252 | req->result = lstat64 (req->dataptr, req->statdata); |
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253 | else if (req->type == REQ_FSTAT) |
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254 | req->result = fstat64 (req->fd, req->statdata); |
204 | else |
255 | else |
205 | { |
256 | { |
206 | write (respipe[1], (void *)&req, sizeof (req)); |
257 | write (respipe[1], (void *)&req, sizeof (req)); |
207 | break; |
258 | break; |
208 | } |
259 | } |
… | |
… | |
217 | MODULE = Linux::AIO PACKAGE = Linux::AIO |
268 | MODULE = Linux::AIO PACKAGE = Linux::AIO |
218 | |
269 | |
219 | BOOT: |
270 | BOOT: |
220 | { |
271 | { |
221 | sigfillset (&fullsigset); |
272 | sigfillset (&fullsigset); |
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273 | sigdelset (&fullsigset, SIGTERM); |
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274 | sigdelset (&fullsigset, SIGQUIT); |
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275 | sigdelset (&fullsigset, SIGABRT); |
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276 | sigdelset (&fullsigset, SIGINT); |
222 | |
277 | |
223 | if (pipe (reqpipe) || pipe (respipe)) |
278 | if (pipe (reqpipe) || pipe (respipe)) |
224 | croak ("unable to initialize request or result pipe"); |
279 | croak ("unable to initialize request or result pipe"); |
225 | |
280 | |
226 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
281 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
… | |
… | |
245 | { |
300 | { |
246 | end_thread (); |
301 | end_thread (); |
247 | cur--; |
302 | cur--; |
248 | } |
303 | } |
249 | |
304 | |
250 | poll_cb (); |
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251 | while (started > nthreads) |
305 | while (started > nthreads) |
252 | { |
306 | { |
253 | sched_yield (); |
307 | fd_set rfd; |
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308 | FD_ZERO(&rfd); |
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309 | FD_SET(respipe[0], &rfd); |
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310 | |
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311 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
254 | poll_cb (); |
312 | poll_cb (aTHX); |
255 | } |
313 | } |
256 | |
314 | |
257 | void |
315 | void |
258 | aio_read(fh,offset,length,data,dataoffset,callback) |
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259 | PerlIO * fh |
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260 | UV offset |
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261 | STRLEN length |
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262 | SV * data |
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263 | STRLEN dataoffset |
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264 | SV * callback |
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265 | PROTOTYPE: $$$$$$ |
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266 | ALIAS: |
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267 | aio_write = 1 |
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268 | CODE: |
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269 | SvUPGRADE (data, SVt_PV); |
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270 | SvPOK_on (data); |
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271 | read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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272 | |
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273 | void |
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274 | aio_open(pathname,flags,mode,callback) |
316 | aio_open(pathname,flags,mode,callback) |
275 | char * pathname |
317 | SV * pathname |
276 | int flags |
318 | int flags |
277 | int mode |
319 | int mode |
278 | SV * callback |
320 | SV * callback |
279 | PROTOTYPE: $$$$ |
321 | PROTOTYPE: $$$$ |
280 | CODE: |
322 | CODE: |
281 | aio_req req; |
323 | aio_req req; |
282 | |
324 | |
283 | New (0, req, 1, aio_cb); |
325 | Newz (0, req, 1, aio_cb); |
284 | |
326 | |
285 | if (!req) |
327 | if (!req) |
286 | croak ("out of memory during aio_req allocation"); |
328 | croak ("out of memory during aio_req allocation"); |
287 | |
329 | |
288 | req->type = REQ_OPEN; |
330 | req->type = REQ_OPEN; |
289 | req->dataptr = pathname; |
331 | req->data = newSVsv (pathname); |
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332 | req->dataptr = SvPV_nolen (req->data); |
290 | req->fd = flags; |
333 | req->fd = flags; |
291 | req->mode = mode; |
334 | req->mode = mode; |
292 | req->callback = SvREFCNT_inc (callback); |
335 | req->callback = SvREFCNT_inc (callback); |
293 | |
336 | |
294 | send_req (req); |
337 | send_req (req); |
295 | |
338 | |
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339 | void |
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340 | aio_close(fh,callback) |
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341 | InputStream fh |
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342 | SV * callback |
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343 | PROTOTYPE: $$ |
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344 | CODE: |
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345 | aio_req req; |
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346 | |
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347 | Newz (0, req, 1, aio_cb); |
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348 | |
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349 | if (!req) |
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350 | croak ("out of memory during aio_req allocation"); |
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351 | |
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352 | req->type = REQ_CLOSE; |
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353 | req->fd = PerlIO_fileno (fh); |
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354 | req->callback = SvREFCNT_inc (callback); |
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355 | |
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356 | send_req (req); |
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357 | |
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358 | void |
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359 | aio_read(fh,offset,length,data,dataoffset,callback) |
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360 | InputStream fh |
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361 | UV offset |
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362 | IV length |
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363 | SV * data |
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364 | IV dataoffset |
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365 | SV * callback |
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366 | PROTOTYPE: $$$$$$ |
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367 | CODE: |
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368 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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369 | |
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370 | void |
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371 | aio_write(fh,offset,length,data,dataoffset,callback) |
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372 | OutputStream fh |
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373 | UV offset |
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374 | IV length |
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375 | SV * data |
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376 | IV dataoffset |
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377 | SV * callback |
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378 | PROTOTYPE: $$$$$$ |
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379 | CODE: |
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380 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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381 | |
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382 | void |
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383 | aio_stat(fh_or_path,callback) |
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384 | SV * fh_or_path |
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385 | SV * callback |
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386 | PROTOTYPE: $$ |
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387 | ALIAS: |
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388 | aio_lstat = 1 |
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389 | CODE: |
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390 | aio_req req; |
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391 | |
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392 | Newz (0, req, 1, aio_cb); |
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393 | |
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394 | if (!req) |
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395 | croak ("out of memory during aio_req allocation"); |
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396 | |
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397 | New (0, req->statdata, 1, struct stat64); |
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398 | |
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399 | if (!req->statdata) |
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400 | croak ("out of memory during aio_req->statdata allocation"); |
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401 | |
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402 | if (SvPOK (fh_or_path)) |
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403 | { |
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404 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
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405 | req->data = newSVsv (fh_or_path); |
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406 | req->dataptr = SvPV_nolen (req->data); |
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407 | } |
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408 | else |
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409 | { |
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410 | req->type = REQ_FSTAT; |
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411 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
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412 | } |
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413 | |
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414 | req->callback = SvREFCNT_inc (callback); |
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415 | |
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416 | send_req (req); |
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417 | |
296 | int |
418 | int |
297 | poll_fileno() |
419 | poll_fileno() |
298 | PROTOTYPE: |
420 | PROTOTYPE: |
299 | CODE: |
421 | CODE: |
300 | RETVAL = respipe[0]; |
422 | RETVAL = respipe[0]; |