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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> |
… | |
… | |
7 | #include <unistd.h> |
9 | #include <unistd.h> |
8 | #include <fcntl.h> |
10 | #include <fcntl.h> |
9 | #include <signal.h> |
11 | #include <signal.h> |
10 | #include <sched.h> |
12 | #include <sched.h> |
11 | |
13 | |
12 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
14 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
13 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
15 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
14 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
16 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
15 | |
17 | |
16 | #define STACKSIZE 1024 /* yeah */ |
18 | #define STACKSIZE (128 * sizeof (long)) /* yeah */ |
17 | |
19 | |
18 | enum { REQ_QUIT, REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, REQ_STAT, REQ_LSTAT, REQ_FSTAT}; |
20 | enum { |
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21 | REQ_QUIT, |
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22 | REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, |
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23 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK |
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24 | }; |
19 | |
25 | |
20 | typedef struct { |
26 | typedef struct { |
21 | char stack[STACKSIZE]; |
27 | char stack[STACKSIZE]; |
22 | } aio_thread; |
28 | } aio_thread; |
23 | |
29 | |
24 | typedef struct { |
30 | typedef struct aio_cb { |
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31 | struct aio_cb *next; |
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32 | |
25 | int type; |
33 | int type; |
26 | aio_thread *thread; |
34 | aio_thread *thread; |
27 | |
35 | |
28 | int fd; |
36 | int fd; |
29 | off_t offset; |
37 | off_t offset; |
… | |
… | |
33 | int errorno; |
41 | int errorno; |
34 | SV *data, *callback; |
42 | SV *data, *callback; |
35 | void *dataptr; |
43 | void *dataptr; |
36 | STRLEN dataoffset; |
44 | STRLEN dataoffset; |
37 | |
45 | |
38 | struct stat64 *statdata; |
46 | Stat_t *statdata; |
39 | } aio_cb; |
47 | } aio_cb; |
40 | |
48 | |
41 | typedef aio_cb *aio_req; |
49 | typedef aio_cb *aio_req; |
42 | |
50 | |
43 | static int started; |
51 | static int started; |
44 | static int nreqs; |
52 | static int nreqs; |
45 | static int reqpipe[2], respipe[2]; |
53 | static int reqpipe[2], respipe[2]; |
46 | |
54 | |
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55 | static aio_req qs, qe; /* queue start, queue end */ |
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56 | |
47 | static int aio_proc(void *arg); |
57 | static int aio_proc(void *arg); |
48 | |
58 | |
49 | static void |
59 | static void |
50 | start_thread(void) |
60 | start_thread (void) |
51 | { |
61 | { |
52 | aio_thread *thr; |
62 | aio_thread *thr; |
53 | |
63 | |
54 | New (0, thr, 1, aio_thread); |
64 | New (0, thr, 1, aio_thread); |
55 | |
65 | |
56 | if (clone (aio_proc, |
66 | if (clone (aio_proc, |
57 | &(thr->stack[STACKSIZE]), |
67 | &(thr->stack[STACKSIZE - sizeof (long)]), |
58 | CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND, |
68 | CLONE_VM|CLONE_FS|CLONE_FILES, |
59 | thr) >= 0) |
69 | thr) >= 0) |
60 | started++; |
70 | started++; |
61 | else |
71 | else |
62 | Safefree (thr); |
72 | Safefree (thr); |
63 | } |
73 | } |
64 | |
74 | |
65 | static void |
75 | static void |
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76 | send_reqs (void) |
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77 | { |
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78 | /* this write is atomic */ |
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79 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
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80 | { |
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81 | qs = qs->next; |
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82 | if (!qs) qe = 0; |
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83 | } |
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84 | } |
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85 | |
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86 | static void |
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87 | send_req (aio_req req) |
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88 | { |
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89 | nreqs++; |
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90 | req->next = 0; |
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91 | |
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92 | if (qe) |
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93 | { |
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94 | qe->next = req; |
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95 | qe = req; |
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96 | } |
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97 | else |
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98 | qe = qs = req; |
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99 | |
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100 | send_reqs (); |
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101 | } |
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102 | |
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103 | static void |
66 | end_thread(void) |
104 | end_thread (void) |
67 | { |
105 | { |
68 | aio_req req; |
106 | aio_req req; |
69 | New (0, req, 1, aio_cb); |
107 | New (0, req, 1, aio_cb); |
70 | req->type = REQ_QUIT; |
108 | req->type = REQ_QUIT; |
71 | write (reqpipe[1], &req, sizeof (aio_req)); |
109 | |
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110 | send_req (req); |
72 | } |
111 | } |
73 | |
112 | |
74 | static void |
113 | static void |
75 | send_req (aio_req req) |
114 | read_write (pTHX_ |
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 |
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82 | read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, |
115 | int dowrite, int fd, off_t offset, size_t length, |
83 | SV *data, STRLEN dataoffset, SV*callback) |
116 | SV *data, STRLEN dataoffset, SV *callback) |
84 | { |
117 | { |
85 | aio_req req; |
118 | aio_req req; |
86 | STRLEN svlen; |
119 | STRLEN svlen; |
87 | char *svptr = SvPV (data, svlen); |
120 | char *svptr = SvPV (data, svlen); |
88 | |
121 | |
… | |
… | |
124 | req->callback = SvREFCNT_inc (callback); |
157 | req->callback = SvREFCNT_inc (callback); |
125 | |
158 | |
126 | send_req (req); |
159 | send_req (req); |
127 | } |
160 | } |
128 | |
161 | |
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162 | static void |
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163 | poll_wait () |
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164 | { |
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165 | fd_set rfd; |
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166 | FD_ZERO(&rfd); |
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167 | FD_SET(respipe[0], &rfd); |
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168 | |
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169 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
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170 | } |
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171 | |
129 | static int |
172 | static int |
130 | poll_cb (pTHX) |
173 | poll_cb (pTHX) |
131 | { |
174 | { |
132 | dSP; |
175 | dSP; |
133 | int count = 0; |
176 | int count = 0; |
134 | aio_req req; |
177 | aio_req req; |
135 | |
178 | |
136 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
179 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
137 | { |
180 | { |
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181 | nreqs--; |
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182 | |
138 | if (req->type == REQ_QUIT) |
183 | if (req->type == REQ_QUIT) |
139 | { |
184 | { |
140 | Safefree (req->thread); |
185 | Safefree (req->thread); |
141 | started--; |
186 | started--; |
142 | } |
187 | } |
… | |
… | |
152 | if (req->data) |
197 | if (req->data) |
153 | SvREFCNT_dec (req->data); |
198 | SvREFCNT_dec (req->data); |
154 | |
199 | |
155 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
200 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
156 | { |
201 | { |
157 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
202 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
158 | PL_laststatval = req->result; |
203 | PL_laststatval = req->result; |
159 | PL_statcache.st_dev = req->statdata->st_dev; |
204 | PL_statcache = *(req->statdata); |
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 | |
205 | |
173 | Safefree (req->statdata); |
206 | Safefree (req->statdata); |
174 | } |
207 | } |
175 | |
208 | |
176 | PUSHMARK (SP); |
209 | PUSHMARK (SP); |
… | |
… | |
181 | |
214 | |
182 | if (req->callback) |
215 | if (req->callback) |
183 | SvREFCNT_dec (req->callback); |
216 | SvREFCNT_dec (req->callback); |
184 | |
217 | |
185 | errno = errorno; |
218 | errno = errorno; |
186 | nreqs--; |
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187 | count++; |
219 | count++; |
188 | } |
220 | } |
189 | |
221 | |
190 | Safefree (req); |
222 | Safefree (req); |
191 | } |
223 | } |
192 | |
224 | |
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225 | if (qs) |
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226 | send_reqs (); |
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227 | |
193 | return count; |
228 | return count; |
194 | } |
229 | } |
195 | |
230 | |
196 | static sigset_t fullsigset; |
231 | static sigset_t fullsigset; |
197 | |
232 | |
198 | #undef errno |
233 | #undef errno |
199 | #include <asm/unistd.h> |
234 | #include <asm/unistd.h> |
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235 | #include <sys/prctl.h> |
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236 | |
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237 | #define COPY_STATDATA \ |
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238 | req->statdata->st_dev = statdata.st_dev; \ |
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239 | req->statdata->st_ino = statdata.st_ino; \ |
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240 | req->statdata->st_mode = statdata.st_mode; \ |
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241 | req->statdata->st_nlink = statdata.st_nlink; \ |
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242 | req->statdata->st_uid = statdata.st_uid; \ |
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243 | req->statdata->st_gid = statdata.st_gid; \ |
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244 | req->statdata->st_rdev = statdata.st_rdev; \ |
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245 | req->statdata->st_size = statdata.st_size; \ |
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246 | req->statdata->st_atime = statdata.st_atime; \ |
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247 | req->statdata->st_mtime = statdata.st_mtime; \ |
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248 | req->statdata->st_ctime = statdata.st_ctime; \ |
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249 | req->statdata->st_blksize = statdata.st_blksize; \ |
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250 | req->statdata->st_blocks = statdata.st_blocks; \ |
200 | |
251 | |
201 | static int |
252 | static int |
202 | aio_proc(void *thr_arg) |
253 | aio_proc (void *thr_arg) |
203 | { |
254 | { |
204 | aio_thread *thr = thr_arg; |
255 | aio_thread *thr = thr_arg; |
205 | aio_req req; |
256 | aio_req req; |
206 | int errno; |
257 | int errno; |
207 | |
258 | |
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259 | /* this is very much kernel-specific :(:(:( */ |
208 | /* we rely on gcc's ability to create closures. */ |
260 | /* we rely on gcc's ability to create closures. */ |
209 | _syscall3(int,read,int,fd,char *,buf,size_t,count) |
261 | _syscall3(int,read,int,fd,char *,buf,size_t,count) |
210 | _syscall3(int,write,int,fd,char *,buf,size_t,count) |
262 | _syscall3(int,write,int,fd,char *,buf,size_t,count) |
211 | |
263 | |
212 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) |
264 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) |
213 | _syscall1(int,close,int,fd) |
265 | _syscall1(int,close,int,fd) |
214 | |
266 | |
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267 | #ifdef __NR_pread64 |
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268 | _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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269 | _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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270 | #elif __NR_pread |
215 | _syscall4(int,pread,int,fd,char *,buf,size_t,count,off_t,offset) |
271 | _syscall4(int,pread,int,fd,char *,buf,size_t,count,offset_t,offset) |
216 | _syscall4(int,pwrite,int,fd,char *,buf,size_t,count,off_t,offset) |
272 | _syscall4(int,pwrite,int,fd,char *,buf,size_t,count,offset_t,offset) |
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273 | #else |
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274 | # error "neither pread nor pread64 defined" |
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275 | #endif |
217 | |
276 | |
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277 | |
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278 | #ifdef __NR_stat64 |
218 | _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) |
279 | _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) |
219 | _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) |
280 | _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) |
220 | _syscall2(int,fstat64, int, fd, struct stat64 *, buf) |
281 | _syscall2(int,fstat64, int, fd, struct stat64 *, buf) |
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282 | #elif __NR_stat |
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283 | _syscall2(int,stat, const char *, filename, struct stat *, buf) |
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284 | _syscall2(int,lstat, const char *, filename, struct stat *, buf) |
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285 | _syscall2(int,fstat, int, fd, struct stat *, buf) |
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286 | #else |
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287 | # error "neither stat64 nor stat defined" |
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288 | #endif |
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289 | |
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290 | _syscall1(int,unlink, char *, filename); |
221 | |
291 | |
222 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
292 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
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293 | prctl (PR_SET_PDEATHSIG, SIGKILL); |
223 | |
294 | |
224 | /* then loop */ |
295 | /* then loop */ |
225 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
296 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
226 | { |
297 | { |
227 | req->thread = thr; |
298 | req->thread = thr; |
228 | errno = 0; /* strictly unnecessary */ |
299 | errno = 0; /* strictly unnecessary */ |
229 | |
300 | |
230 | if (req->type == REQ_READ) |
301 | switch (req->type) |
231 | req->result = pread (req->fd, req->dataptr, req->length, req->offset); |
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232 | else if (req->type == REQ_WRITE) |
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233 | req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); |
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234 | else if (req->type == REQ_OPEN) |
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235 | req->result = open (req->dataptr, req->fd, req->mode); |
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236 | else if (req->type == REQ_CLOSE) |
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237 | req->result = close (req->fd); |
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238 | else if (req->type == REQ_STAT) |
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239 | req->result = stat64 (req->dataptr, req->statdata); |
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240 | else if (req->type == REQ_LSTAT) |
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241 | req->result = lstat64 (req->dataptr, req->statdata); |
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242 | else if (req->type == REQ_FSTAT) |
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243 | req->result = fstat64 (req->fd, req->statdata); |
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244 | else |
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245 | { |
302 | { |
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303 | #ifdef __NR_pread64 |
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304 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; |
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305 | case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; |
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306 | #else |
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307 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
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308 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
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309 | #endif |
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310 | #ifdef __NR_stat64 |
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311 | struct stat64 statdata; |
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312 | case REQ_STAT: req->result = stat64 (req->dataptr, &statdata); COPY_STATDATA; break; |
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313 | case REQ_LSTAT: req->result = lstat64 (req->dataptr, &statdata); COPY_STATDATA; break; |
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314 | case REQ_FSTAT: req->result = fstat64 (req->fd, &statdata); COPY_STATDATA; break; |
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315 | #else |
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316 | struct stat statdata; |
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317 | case REQ_STAT: req->result = stat (req->dataptr, &statdata); COPY_STATDATA; break; |
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318 | case REQ_LSTAT: req->result = lstat (req->dataptr, &statdata); COPY_STATDATA; break; |
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319 | case REQ_FSTAT: req->result = fstat (req->fd, &statdata); COPY_STATDATA; break; |
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320 | #endif |
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321 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
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322 | case REQ_CLOSE: req->result = close (req->fd); break; |
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323 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
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324 | |
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325 | case REQ_QUIT: |
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326 | default: |
246 | write (respipe[1], (void *)&req, sizeof (req)); |
327 | write (respipe[1], (void *)&req, sizeof (req)); |
247 | break; |
328 | return 0; |
248 | } |
329 | } |
249 | |
330 | |
250 | req->errorno = errno; |
331 | req->errorno = errno; |
251 | write (respipe[1], (void *)&req, sizeof (req)); |
332 | write (respipe[1], (void *)&req, sizeof (req)); |
252 | } |
333 | } |
… | |
… | |
264 | sigdelset (&fullsigset, SIGABRT); |
345 | sigdelset (&fullsigset, SIGABRT); |
265 | sigdelset (&fullsigset, SIGINT); |
346 | sigdelset (&fullsigset, SIGINT); |
266 | |
347 | |
267 | if (pipe (reqpipe) || pipe (respipe)) |
348 | if (pipe (reqpipe) || pipe (respipe)) |
268 | croak ("unable to initialize request or result pipe"); |
349 | croak ("unable to initialize request or result pipe"); |
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350 | |
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351 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
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352 | croak ("cannot set result pipe to nonblocking mode"); |
269 | |
353 | |
270 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
354 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
271 | croak ("cannot set result pipe to nonblocking mode"); |
355 | croak ("cannot set result pipe to nonblocking mode"); |
272 | } |
356 | } |
273 | |
357 | |
… | |
… | |
291 | cur--; |
375 | cur--; |
292 | } |
376 | } |
293 | |
377 | |
294 | while (started > nthreads) |
378 | while (started > nthreads) |
295 | { |
379 | { |
296 | fd_set rfd; |
380 | poll_wait (); |
297 | FD_ZERO(&rfd); |
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298 | FD_SET(respipe[0], &rfd); |
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299 | |
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300 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
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301 | poll_cb (); |
381 | poll_cb (aTHX); |
302 | } |
382 | } |
303 | |
383 | |
304 | void |
384 | void |
305 | aio_open(pathname,flags,mode,callback) |
385 | aio_open(pathname,flags,mode,callback) |
306 | SV * pathname |
386 | SV * pathname |
… | |
… | |
381 | Newz (0, req, 1, aio_cb); |
461 | Newz (0, req, 1, aio_cb); |
382 | |
462 | |
383 | if (!req) |
463 | if (!req) |
384 | croak ("out of memory during aio_req allocation"); |
464 | croak ("out of memory during aio_req allocation"); |
385 | |
465 | |
386 | New (0, req->statdata, 1, struct stat64); |
466 | New (0, req->statdata, 1, Stat_t); |
387 | |
467 | |
388 | if (!req->statdata) |
468 | if (!req->statdata) |
389 | croak ("out of memory during aio_req->statdata allocation"); |
469 | croak ("out of memory during aio_req->statdata allocation"); |
390 | |
470 | |
391 | if (SvPOK (fh_or_path)) |
471 | if (SvPOK (fh_or_path)) |
… | |
… | |
402 | |
482 | |
403 | req->callback = SvREFCNT_inc (callback); |
483 | req->callback = SvREFCNT_inc (callback); |
404 | |
484 | |
405 | send_req (req); |
485 | send_req (req); |
406 | |
486 | |
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487 | void |
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488 | aio_unlink(pathname,callback) |
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489 | SV * pathname |
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490 | SV * callback |
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491 | PROTOTYPE: $$ |
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492 | CODE: |
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493 | aio_req req; |
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494 | |
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495 | Newz (0, req, 1, aio_cb); |
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496 | |
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497 | if (!req) |
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498 | croak ("out of memory during aio_req allocation"); |
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499 | |
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500 | req->type = REQ_UNLINK; |
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501 | req->data = newSVsv (pathname); |
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502 | req->dataptr = SvPV_nolen (req->data); |
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503 | req->callback = SvREFCNT_inc (callback); |
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504 | |
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505 | send_req (req); |
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506 | |
407 | int |
507 | int |
408 | poll_fileno() |
508 | poll_fileno() |
409 | PROTOTYPE: |
509 | PROTOTYPE: |
410 | CODE: |
510 | CODE: |
411 | RETVAL = respipe[0]; |
511 | RETVAL = respipe[0]; |