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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 aio_cb { |
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34 | struct aio_cb *next; |
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35 | |
20 | int type; |
36 | int type; |
21 | aio_thread *thread; |
37 | aio_thread *thread; |
22 | |
38 | |
23 | /* read/write */ |
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24 | int fd; |
39 | int fd; |
25 | off_t offset; |
40 | off_t offset; |
26 | size_t length; |
41 | size_t length; |
27 | ssize_t result; |
42 | ssize_t result; |
28 | mode_t mode; /* open */ |
43 | mode_t mode; /* open */ |
29 | int errorno; |
44 | int errorno; |
30 | SV *data, *callback; |
45 | SV *data, *callback; |
31 | void *dataptr; |
46 | void *dataptr; |
32 | STRLEN dataoffset; |
47 | STRLEN dataoffset; |
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48 | |
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49 | struct stat64 *statdata; |
33 | } aio_cb; |
50 | } aio_cb; |
34 | |
51 | |
35 | typedef aio_cb *aio_req; |
52 | typedef aio_cb *aio_req; |
36 | |
53 | |
37 | static int started; |
54 | static int started; |
38 | static int nreqs; |
55 | static int nreqs; |
39 | static int reqpipe[2], respipe[2]; |
56 | static int reqpipe[2], respipe[2]; |
40 | |
57 | |
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58 | static aio_req qs, qe; /* queue start, queue end */ |
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59 | |
41 | static int aio_proc(void *arg); |
60 | static int aio_proc(void *arg); |
42 | |
61 | |
43 | static void |
62 | static void |
44 | start_thread(void) |
63 | start_thread (void) |
45 | { |
64 | { |
46 | aio_thread *thr; |
65 | aio_thread *thr; |
47 | |
66 | |
48 | New (0, thr, 1, aio_thread); |
67 | New (0, thr, 1, aio_thread); |
49 | |
68 | |
… | |
… | |
55 | else |
74 | else |
56 | Safefree (thr); |
75 | Safefree (thr); |
57 | } |
76 | } |
58 | |
77 | |
59 | static void |
78 | static void |
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79 | send_reqs (void) |
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80 | { |
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81 | /* this write is atomic */ |
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82 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
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83 | { |
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84 | qs = qs->next; |
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85 | if (!qs) qe = 0; |
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86 | } |
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87 | } |
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88 | |
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89 | static void |
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90 | send_req (aio_req req) |
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91 | { |
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92 | nreqs++; |
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93 | req->next = 0; |
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94 | |
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95 | if (qe) |
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96 | qe->next = req; |
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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 |
60 | end_thread(void) |
104 | end_thread (void) |
61 | { |
105 | { |
62 | aio_req req; |
106 | aio_req req; |
63 | New (0, req, 1, aio_cb); |
107 | New (0, req, 1, aio_cb); |
64 | req->type = REQ_QUIT; |
108 | req->type = REQ_QUIT; |
65 | write (reqpipe[1], &req, sizeof (aio_req)); |
109 | |
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110 | send_req (req); |
66 | } |
111 | } |
67 | |
112 | |
68 | static void |
113 | static void |
69 | send_req (aio_req req) |
114 | read_write (pTHX_ |
70 | { |
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71 | nreqs++; |
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72 | write (reqpipe[1], &req, sizeof (aio_req)); |
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73 | } |
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74 | |
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75 | static void |
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76 | read_write (pTHX_ int dowrite, int fd, off_t offset, size_t length, |
115 | int dowrite, int fd, off_t offset, size_t length, |
77 | SV *data, STRLEN dataoffset, SV*callback) |
116 | SV *data, STRLEN dataoffset, SV *callback) |
78 | { |
117 | { |
79 | aio_req req; |
118 | aio_req req; |
80 | STRLEN svlen; |
119 | STRLEN svlen; |
81 | char *svptr = SvPV (data, svlen); |
120 | char *svptr = SvPV (data, svlen); |
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121 | |
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122 | SvUPGRADE (data, SVt_PV); |
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123 | SvPOK_on (data); |
82 | |
124 | |
83 | if (dataoffset < 0) |
125 | if (dataoffset < 0) |
84 | dataoffset += svlen; |
126 | dataoffset += svlen; |
85 | |
127 | |
86 | if (dataoffset < 0 || dataoffset > svlen) |
128 | if (dataoffset < 0 || dataoffset > svlen) |
… | |
… | |
99 | } |
141 | } |
100 | |
142 | |
101 | if (length < 0) |
143 | if (length < 0) |
102 | croak ("length must not be negative"); |
144 | croak ("length must not be negative"); |
103 | |
145 | |
104 | New (0, req, 1, aio_cb); |
146 | Newz (0, req, 1, aio_cb); |
105 | |
147 | |
106 | if (!req) |
148 | if (!req) |
107 | croak ("out of memory during aio_req allocation"); |
149 | croak ("out of memory during aio_req allocation"); |
108 | |
150 | |
109 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
151 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
… | |
… | |
138 | |
180 | |
139 | if (req->type == REQ_READ) |
181 | if (req->type == REQ_READ) |
140 | SvCUR_set (req->data, req->dataoffset |
182 | SvCUR_set (req->data, req->dataoffset |
141 | + req->result > 0 ? req->result : 0); |
183 | + req->result > 0 ? req->result : 0); |
142 | |
184 | |
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185 | if (req->data) |
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186 | SvREFCNT_dec (req->data); |
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187 | |
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188 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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189 | { |
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190 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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191 | PL_laststatval = req->result; |
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192 | PL_statcache.st_dev = req->statdata->st_dev; |
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193 | PL_statcache.st_ino = req->statdata->st_ino; |
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194 | PL_statcache.st_mode = req->statdata->st_mode; |
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195 | PL_statcache.st_nlink = req->statdata->st_nlink; |
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196 | PL_statcache.st_uid = req->statdata->st_uid; |
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197 | PL_statcache.st_gid = req->statdata->st_gid; |
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198 | PL_statcache.st_rdev = req->statdata->st_rdev; |
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199 | PL_statcache.st_size = req->statdata->st_size; |
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200 | PL_statcache.st_atime = req->statdata->st_atime; |
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201 | PL_statcache.st_mtime = req->statdata->st_mtime; |
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202 | PL_statcache.st_ctime = req->statdata->st_ctime; |
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203 | PL_statcache.st_blksize = req->statdata->st_blksize; |
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204 | PL_statcache.st_blocks = req->statdata->st_blocks; |
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205 | |
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206 | Safefree (req->statdata); |
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207 | } |
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208 | |
143 | PUSHMARK (SP); |
209 | PUSHMARK (SP); |
144 | XPUSHs (sv_2mortal (newSViv (req->result))); |
210 | XPUSHs (sv_2mortal (newSViv (req->result))); |
145 | PUTBACK; |
211 | PUTBACK; |
146 | call_sv (req->callback, G_VOID); |
212 | call_sv (req->callback, G_VOID); |
147 | SPAGAIN; |
213 | SPAGAIN; |
148 | |
214 | |
149 | SvREFCNT_dec (req->data); |
215 | if (req->callback) |
150 | SvREFCNT_dec (req->callback); |
216 | SvREFCNT_dec (req->callback); |
151 | |
217 | |
152 | errno = errorno; |
218 | errno = errorno; |
153 | nreqs--; |
219 | nreqs--; |
154 | count++; |
220 | count++; |
155 | } |
221 | } |
156 | |
222 | |
157 | Safefree (req); |
223 | Safefree (req); |
158 | } |
224 | } |
159 | |
225 | |
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226 | if (qs) |
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227 | send_reqs (); |
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228 | |
160 | return count; |
229 | return count; |
161 | } |
230 | } |
162 | |
231 | |
163 | static sigset_t fullsigset; |
232 | static sigset_t fullsigset; |
164 | |
233 | |
165 | #undef errno |
234 | #undef errno |
166 | #include <asm/unistd.h> |
235 | #include <asm/unistd.h> |
167 | |
236 | |
168 | static int |
237 | static int |
169 | aio_proc(void *thr_arg) |
238 | aio_proc (void *thr_arg) |
170 | { |
239 | { |
171 | aio_thread *thr = thr_arg; |
240 | aio_thread *thr = thr_arg; |
172 | aio_req req; |
241 | aio_req req; |
173 | int errno; |
242 | int errno; |
174 | |
243 | |
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244 | /* this is very much x86 and kernel-specific :(:(:( */ |
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245 | /* we rely on gcc's ability to create closures. */ |
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246 | _syscall3(int,read,int,fd,char *,buf,size_t,count) |
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247 | _syscall3(int,write,int,fd,char *,buf,size_t,count) |
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248 | |
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249 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) |
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250 | _syscall1(int,close,int,fd) |
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251 | |
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252 | _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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253 | _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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254 | |
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255 | _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) |
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256 | _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) |
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257 | _syscall2(int,fstat64, int, fd, struct stat64 *, buf) |
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258 | |
175 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
259 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
176 | |
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177 | /* we rely on gcc's ability to create closures. */ |
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178 | _syscall3(int,lseek,int,fd,off_t,offset,int,whence); |
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179 | _syscall3(int,read,int,fd,char *,buf,off_t,count); |
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180 | _syscall3(int,write,int,fd,char *,buf,off_t,count); |
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181 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode); |
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182 | |
260 | |
183 | /* then loop */ |
261 | /* then loop */ |
184 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
262 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
185 | { |
263 | { |
186 | req->thread = thr; |
264 | req->thread = thr; |
187 | errno = 0; |
265 | errno = 0; /* strictly unnecessary */ |
188 | |
266 | |
189 | if (req->type == REQ_READ || req->type == REQ_WRITE) |
267 | switch (req->type) |
190 | { |
268 | { |
191 | if (lseek (req->fd, req->offset, SEEK_SET) == req->offset) |
269 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; |
192 | { |
270 | case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; |
193 | if (req->type == REQ_READ) |
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194 | req->result = read (req->fd, req->dataptr, req->length); |
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195 | else |
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196 | req->result = write(req->fd, req->dataptr, req->length); |
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197 | } |
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198 | } |
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199 | else if (req->type == REQ_OPEN) |
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200 | { |
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201 | req->result = open (req->dataptr, req->fd, req->mode); |
271 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
202 | } |
272 | case REQ_CLOSE: req->result = close (req->fd); break; |
203 | else |
273 | case REQ_STAT: req->result = stat64 (req->dataptr, req->statdata); break; |
204 | { |
274 | case REQ_LSTAT: req->result = lstat64 (req->dataptr, req->statdata); break; |
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275 | case REQ_FSTAT: req->result = fstat64 (req->fd, req->statdata); break; |
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276 | |
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277 | case REQ_QUIT: |
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278 | default: |
205 | write (respipe[1], (void *)&req, sizeof (req)); |
279 | write (respipe[1], (void *)&req, sizeof (req)); |
206 | break; |
280 | return 0; |
207 | } |
281 | } |
208 | |
282 | |
209 | req->errorno = errno; |
283 | req->errorno = errno; |
210 | write (respipe[1], (void *)&req, sizeof (req)); |
284 | write (respipe[1], (void *)&req, sizeof (req)); |
211 | } |
285 | } |
… | |
… | |
223 | sigdelset (&fullsigset, SIGABRT); |
297 | sigdelset (&fullsigset, SIGABRT); |
224 | sigdelset (&fullsigset, SIGINT); |
298 | sigdelset (&fullsigset, SIGINT); |
225 | |
299 | |
226 | if (pipe (reqpipe) || pipe (respipe)) |
300 | if (pipe (reqpipe) || pipe (respipe)) |
227 | croak ("unable to initialize request or result pipe"); |
301 | croak ("unable to initialize request or result pipe"); |
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302 | |
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303 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
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304 | croak ("cannot set result pipe to nonblocking mode"); |
228 | |
305 | |
229 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
306 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
230 | croak ("cannot set result pipe to nonblocking mode"); |
307 | croak ("cannot set result pipe to nonblocking mode"); |
231 | } |
308 | } |
232 | |
309 | |
… | |
… | |
248 | { |
325 | { |
249 | end_thread (); |
326 | end_thread (); |
250 | cur--; |
327 | cur--; |
251 | } |
328 | } |
252 | |
329 | |
253 | poll_cb (); |
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254 | while (started > nthreads) |
330 | while (started > nthreads) |
255 | { |
331 | { |
256 | sched_yield (); |
332 | fd_set rfd; |
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333 | FD_ZERO(&rfd); |
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334 | FD_SET(respipe[0], &rfd); |
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335 | |
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336 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
257 | poll_cb (); |
337 | poll_cb (aTHX); |
258 | } |
338 | } |
259 | |
339 | |
260 | void |
340 | void |
261 | aio_read(fh,offset,length,data,dataoffset,callback) |
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262 | PerlIO * fh |
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263 | UV offset |
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264 | STRLEN length |
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265 | SV * data |
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266 | STRLEN dataoffset |
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267 | SV * callback |
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268 | PROTOTYPE: $$$$$$ |
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269 | ALIAS: |
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270 | aio_write = 1 |
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271 | CODE: |
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272 | SvUPGRADE (data, SVt_PV); |
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273 | SvPOK_on (data); |
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274 | read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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275 | |
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276 | void |
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277 | aio_open(pathname,flags,mode,callback) |
341 | aio_open(pathname,flags,mode,callback) |
278 | char * pathname |
342 | SV * pathname |
279 | int flags |
343 | int flags |
280 | int mode |
344 | int mode |
281 | SV * callback |
345 | SV * callback |
282 | PROTOTYPE: $$$$ |
346 | PROTOTYPE: $$$$ |
283 | CODE: |
347 | CODE: |
284 | aio_req req; |
348 | aio_req req; |
285 | |
349 | |
286 | New (0, req, 1, aio_cb); |
350 | Newz (0, req, 1, aio_cb); |
287 | |
351 | |
288 | if (!req) |
352 | if (!req) |
289 | croak ("out of memory during aio_req allocation"); |
353 | croak ("out of memory during aio_req allocation"); |
290 | |
354 | |
291 | req->type = REQ_OPEN; |
355 | req->type = REQ_OPEN; |
292 | req->dataptr = pathname; |
356 | req->data = newSVsv (pathname); |
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357 | req->dataptr = SvPV_nolen (req->data); |
293 | req->fd = flags; |
358 | req->fd = flags; |
294 | req->mode = mode; |
359 | req->mode = mode; |
295 | req->callback = SvREFCNT_inc (callback); |
360 | req->callback = SvREFCNT_inc (callback); |
296 | |
361 | |
297 | send_req (req); |
362 | send_req (req); |
298 | |
363 | |
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364 | void |
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365 | aio_close(fh,callback) |
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366 | InputStream fh |
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367 | SV * callback |
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368 | PROTOTYPE: $$ |
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369 | CODE: |
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370 | aio_req req; |
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371 | |
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372 | Newz (0, req, 1, aio_cb); |
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373 | |
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374 | if (!req) |
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375 | croak ("out of memory during aio_req allocation"); |
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376 | |
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377 | req->type = REQ_CLOSE; |
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378 | req->fd = PerlIO_fileno (fh); |
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379 | req->callback = SvREFCNT_inc (callback); |
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380 | |
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381 | send_req (req); |
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382 | |
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383 | void |
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384 | aio_read(fh,offset,length,data,dataoffset,callback) |
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385 | InputStream fh |
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386 | UV offset |
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387 | IV length |
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388 | SV * data |
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389 | IV dataoffset |
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390 | SV * callback |
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391 | PROTOTYPE: $$$$$$ |
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392 | CODE: |
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393 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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394 | |
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395 | void |
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396 | aio_write(fh,offset,length,data,dataoffset,callback) |
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397 | OutputStream fh |
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398 | UV offset |
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399 | IV length |
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400 | SV * data |
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401 | IV dataoffset |
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402 | SV * callback |
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403 | PROTOTYPE: $$$$$$ |
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404 | CODE: |
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405 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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406 | |
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407 | void |
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408 | aio_stat(fh_or_path,callback) |
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409 | SV * fh_or_path |
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410 | SV * callback |
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411 | PROTOTYPE: $$ |
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412 | ALIAS: |
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413 | aio_lstat = 1 |
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414 | CODE: |
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415 | aio_req req; |
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416 | |
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417 | Newz (0, req, 1, aio_cb); |
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418 | |
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419 | if (!req) |
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420 | croak ("out of memory during aio_req allocation"); |
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421 | |
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422 | New (0, req->statdata, 1, struct stat64); |
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423 | |
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424 | if (!req->statdata) |
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425 | croak ("out of memory during aio_req->statdata allocation"); |
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426 | |
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427 | if (SvPOK (fh_or_path)) |
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428 | { |
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429 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
|
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430 | req->data = newSVsv (fh_or_path); |
|
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431 | req->dataptr = SvPV_nolen (req->data); |
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432 | } |
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433 | else |
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|
434 | { |
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435 | req->type = REQ_FSTAT; |
|
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436 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
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437 | } |
|
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438 | |
|
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439 | req->callback = SvREFCNT_inc (callback); |
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440 | |
|
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441 | send_req (req); |
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442 | |
299 | int |
443 | int |
300 | poll_fileno() |
444 | poll_fileno() |
301 | PROTOTYPE: |
445 | PROTOTYPE: |
302 | CODE: |
446 | CODE: |
303 | RETVAL = respipe[0]; |
447 | RETVAL = respipe[0]; |