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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, REQ_CLOSE }; |
27 | enum { |
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28 | REQ_QUIT, |
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29 | REQ_OPEN, REQ_CLOSE, REQ_READ, REQ_WRITE, |
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30 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK |
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31 | }; |
14 | |
32 | |
15 | typedef struct { |
33 | typedef struct { |
16 | char stack[STACKSIZE]; |
34 | char stack[STACKSIZE]; |
17 | } aio_thread; |
35 | } aio_thread; |
18 | |
36 | |
19 | typedef struct { |
37 | typedef struct aio_cb { |
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38 | struct aio_cb *next; |
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39 | |
20 | int type; |
40 | int type; |
21 | aio_thread *thread; |
41 | aio_thread *thread; |
22 | |
42 | |
23 | /* read/write */ |
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24 | int fd; |
43 | int fd; |
25 | off_t offset; |
44 | off_t offset; |
26 | size_t length; |
45 | size_t length; |
27 | ssize_t result; |
46 | ssize_t result; |
28 | mode_t mode; /* open */ |
47 | mode_t mode; /* open */ |
29 | int errorno; |
48 | int errorno; |
30 | SV *data, *callback; |
49 | SV *data, *callback; |
31 | void *dataptr; |
50 | void *dataptr; |
32 | STRLEN dataoffset; |
51 | STRLEN dataoffset; |
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52 | |
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53 | struct stat64 *statdata; |
33 | } aio_cb; |
54 | } aio_cb; |
34 | |
55 | |
35 | typedef aio_cb *aio_req; |
56 | typedef aio_cb *aio_req; |
36 | |
57 | |
37 | static int started; |
58 | static int started; |
38 | static int nreqs; |
59 | static int nreqs; |
39 | static int reqpipe[2], respipe[2]; |
60 | static int reqpipe[2], respipe[2]; |
40 | |
61 | |
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62 | static aio_req qs, qe; /* queue start, queue end */ |
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63 | |
41 | static int aio_proc(void *arg); |
64 | static int aio_proc(void *arg); |
42 | |
65 | |
43 | static void |
66 | static void |
44 | start_thread(void) |
67 | start_thread (void) |
45 | { |
68 | { |
46 | aio_thread *thr; |
69 | aio_thread *thr; |
47 | |
70 | |
48 | New (0, thr, 1, aio_thread); |
71 | New (0, thr, 1, aio_thread); |
49 | |
72 | |
50 | if (clone (aio_proc, |
73 | if (clone (aio_proc, |
51 | &(thr->stack[STACKSIZE]), |
74 | &(thr->stack[STACKSIZE]), |
52 | CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND, |
75 | CLONE_VM|CLONE_FS|CLONE_FILES, |
53 | thr) >= 0) |
76 | thr) >= 0) |
54 | started++; |
77 | started++; |
55 | else |
78 | else |
56 | Safefree (thr); |
79 | Safefree (thr); |
57 | } |
80 | } |
58 | |
81 | |
59 | static void |
82 | static void |
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83 | send_reqs (void) |
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84 | { |
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85 | /* this write is atomic */ |
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86 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
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87 | { |
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88 | qs = qs->next; |
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89 | if (!qs) qe = 0; |
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90 | } |
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91 | } |
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92 | |
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93 | static void |
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94 | send_req (aio_req req) |
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95 | { |
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96 | nreqs++; |
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97 | req->next = 0; |
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98 | |
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99 | if (qe) |
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100 | qe->next = req; |
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101 | else |
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102 | qe = qs = req; |
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103 | |
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104 | send_reqs (); |
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105 | } |
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106 | |
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107 | static void |
60 | end_thread(void) |
108 | end_thread (void) |
61 | { |
109 | { |
62 | aio_req req; |
110 | aio_req req; |
63 | New (0, req, 1, aio_cb); |
111 | New (0, req, 1, aio_cb); |
64 | req->type = REQ_QUIT; |
112 | req->type = REQ_QUIT; |
65 | write (reqpipe[1], &req, sizeof (aio_req)); |
113 | |
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114 | send_req (req); |
66 | } |
115 | } |
67 | |
116 | |
68 | static void |
117 | static void |
69 | send_req (aio_req req) |
118 | 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, |
119 | int dowrite, int fd, off_t offset, size_t length, |
77 | SV *data, STRLEN dataoffset, SV*callback) |
120 | SV *data, STRLEN dataoffset, SV *callback) |
78 | { |
121 | { |
79 | aio_req req; |
122 | aio_req req; |
80 | STRLEN svlen; |
123 | STRLEN svlen; |
81 | char *svptr = SvPV (data, svlen); |
124 | char *svptr = SvPV (data, svlen); |
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125 | |
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126 | SvUPGRADE (data, SVt_PV); |
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127 | SvPOK_on (data); |
82 | |
128 | |
83 | if (dataoffset < 0) |
129 | if (dataoffset < 0) |
84 | dataoffset += svlen; |
130 | dataoffset += svlen; |
85 | |
131 | |
86 | if (dataoffset < 0 || dataoffset > svlen) |
132 | if (dataoffset < 0 || dataoffset > svlen) |
… | |
… | |
99 | } |
145 | } |
100 | |
146 | |
101 | if (length < 0) |
147 | if (length < 0) |
102 | croak ("length must not be negative"); |
148 | croak ("length must not be negative"); |
103 | |
149 | |
104 | New (0, req, 1, aio_cb); |
150 | Newz (0, req, 1, aio_cb); |
105 | |
151 | |
106 | if (!req) |
152 | if (!req) |
107 | croak ("out of memory during aio_req allocation"); |
153 | croak ("out of memory during aio_req allocation"); |
108 | |
154 | |
109 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
155 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
… | |
… | |
138 | |
184 | |
139 | if (req->type == REQ_READ) |
185 | if (req->type == REQ_READ) |
140 | SvCUR_set (req->data, req->dataoffset |
186 | SvCUR_set (req->data, req->dataoffset |
141 | + req->result > 0 ? req->result : 0); |
187 | + req->result > 0 ? req->result : 0); |
142 | |
188 | |
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189 | if (req->data) |
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190 | SvREFCNT_dec (req->data); |
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191 | |
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192 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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193 | { |
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194 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
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195 | PL_laststatval = req->result; |
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196 | PL_statcache.st_dev = req->statdata->st_dev; |
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197 | PL_statcache.st_ino = req->statdata->st_ino; |
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198 | PL_statcache.st_mode = req->statdata->st_mode; |
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199 | PL_statcache.st_nlink = req->statdata->st_nlink; |
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200 | PL_statcache.st_uid = req->statdata->st_uid; |
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201 | PL_statcache.st_gid = req->statdata->st_gid; |
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202 | PL_statcache.st_rdev = req->statdata->st_rdev; |
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203 | PL_statcache.st_size = req->statdata->st_size; |
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204 | PL_statcache.st_atime = req->statdata->st_atime; |
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205 | PL_statcache.st_mtime = req->statdata->st_mtime; |
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206 | PL_statcache.st_ctime = req->statdata->st_ctime; |
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207 | PL_statcache.st_blksize = req->statdata->st_blksize; |
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208 | PL_statcache.st_blocks = req->statdata->st_blocks; |
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209 | |
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210 | Safefree (req->statdata); |
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211 | } |
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212 | |
143 | PUSHMARK (SP); |
213 | PUSHMARK (SP); |
144 | XPUSHs (sv_2mortal (newSViv (req->result))); |
214 | XPUSHs (sv_2mortal (newSViv (req->result))); |
145 | PUTBACK; |
215 | PUTBACK; |
146 | call_sv (req->callback, G_VOID); |
216 | call_sv (req->callback, G_VOID); |
147 | SPAGAIN; |
217 | SPAGAIN; |
148 | |
218 | |
149 | SvREFCNT_dec (req->data); |
219 | if (req->callback) |
150 | SvREFCNT_dec (req->callback); |
220 | SvREFCNT_dec (req->callback); |
151 | |
221 | |
152 | errno = errorno; |
222 | errno = errorno; |
153 | nreqs--; |
223 | nreqs--; |
154 | count++; |
224 | count++; |
155 | } |
225 | } |
156 | |
226 | |
157 | Safefree (req); |
227 | Safefree (req); |
158 | } |
228 | } |
159 | |
229 | |
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230 | if (qs) |
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231 | send_reqs (); |
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232 | |
160 | return count; |
233 | return count; |
161 | } |
234 | } |
162 | |
235 | |
163 | static sigset_t fullsigset; |
236 | static sigset_t fullsigset; |
164 | |
237 | |
165 | #undef errno |
238 | #undef errno |
166 | #include <asm/unistd.h> |
239 | #include <asm/unistd.h> |
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240 | #include <sys/prctl.h> |
167 | |
241 | |
168 | static int |
242 | static int |
169 | aio_proc(void *thr_arg) |
243 | aio_proc (void *thr_arg) |
170 | { |
244 | { |
171 | aio_thread *thr = thr_arg; |
245 | aio_thread *thr = thr_arg; |
172 | aio_req req; |
246 | aio_req req; |
173 | int errno; |
247 | int errno; |
174 | |
248 | |
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249 | /* this is very much x86 and kernel-specific :(:(:( */ |
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250 | /* we rely on gcc's ability to create closures. */ |
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251 | _syscall3(int,read,int,fd,char *,buf,size_t,count) |
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252 | _syscall3(int,write,int,fd,char *,buf,size_t,count) |
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253 | |
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254 | _syscall3(int,open,char *,pathname,int,flags,mode_t,mode) |
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255 | _syscall1(int,close,int,fd) |
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256 | |
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257 | _syscall5(int,pread64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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258 | _syscall5(int,pwrite64,int,fd,char *,buf,size_t,count,unsigned int,offset_lo,unsigned int,offset_hi) |
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259 | |
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260 | _syscall2(int,stat64, const char *, filename, struct stat64 *, buf) |
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261 | _syscall2(int,lstat64, const char *, filename, struct stat64 *, buf) |
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262 | _syscall2(int,fstat64, int, fd, struct stat64 *, buf) |
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263 | |
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264 | _syscall1(int,unlink, char *, filename); |
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265 | |
175 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
266 | sigprocmask (SIG_SETMASK, &fullsigset, 0); |
176 | |
267 | prctl (PR_SET_PDEATHSIG, SIGKILL); |
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 | _syscall1(int,close,int,fd); |
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183 | |
268 | |
184 | /* then loop */ |
269 | /* then loop */ |
185 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
270 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
186 | { |
271 | { |
187 | req->thread = thr; |
272 | req->thread = thr; |
188 | errno = 0; |
273 | errno = 0; /* strictly unnecessary */ |
189 | |
274 | |
190 | if (req->type == REQ_READ || req->type == REQ_WRITE) |
275 | switch (req->type) |
191 | { |
276 | { |
192 | if (lseek (req->fd, req->offset, SEEK_SET) == req->offset) |
277 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; |
193 | { |
278 | case REQ_WRITE: req->result = pwrite64(req->fd, req->dataptr, req->length, req->offset & 0xffffffff, req->offset >> 32); break; |
194 | if (req->type == REQ_READ) |
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195 | req->result = read (req->fd, req->dataptr, req->length); |
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196 | else |
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197 | req->result = write(req->fd, req->dataptr, req->length); |
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198 | } |
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199 | } |
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200 | else if (req->type == REQ_OPEN) |
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201 | { |
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202 | req->result = open (req->dataptr, req->fd, req->mode); |
279 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
203 | } |
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204 | else if (req->type == REQ_CLOSE) |
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205 | { |
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206 | req->result = close (req->fd); |
280 | case REQ_CLOSE: req->result = close (req->fd); break; |
207 | } |
281 | case REQ_STAT: req->result = stat64 (req->dataptr, req->statdata); break; |
208 | else |
282 | case REQ_LSTAT: req->result = lstat64 (req->dataptr, req->statdata); break; |
209 | { |
283 | case REQ_FSTAT: req->result = fstat64 (req->fd, req->statdata); break; |
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284 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
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285 | |
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286 | case REQ_QUIT: |
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287 | default: |
210 | write (respipe[1], (void *)&req, sizeof (req)); |
288 | write (respipe[1], (void *)&req, sizeof (req)); |
211 | break; |
289 | return 0; |
212 | } |
290 | } |
213 | |
291 | |
214 | req->errorno = errno; |
292 | req->errorno = errno; |
215 | write (respipe[1], (void *)&req, sizeof (req)); |
293 | write (respipe[1], (void *)&req, sizeof (req)); |
216 | } |
294 | } |
… | |
… | |
228 | sigdelset (&fullsigset, SIGABRT); |
306 | sigdelset (&fullsigset, SIGABRT); |
229 | sigdelset (&fullsigset, SIGINT); |
307 | sigdelset (&fullsigset, SIGINT); |
230 | |
308 | |
231 | if (pipe (reqpipe) || pipe (respipe)) |
309 | if (pipe (reqpipe) || pipe (respipe)) |
232 | croak ("unable to initialize request or result pipe"); |
310 | croak ("unable to initialize request or result pipe"); |
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311 | |
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312 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
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313 | croak ("cannot set result pipe to nonblocking mode"); |
233 | |
314 | |
234 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
315 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
235 | croak ("cannot set result pipe to nonblocking mode"); |
316 | croak ("cannot set result pipe to nonblocking mode"); |
236 | } |
317 | } |
237 | |
318 | |
… | |
… | |
253 | { |
334 | { |
254 | end_thread (); |
335 | end_thread (); |
255 | cur--; |
336 | cur--; |
256 | } |
337 | } |
257 | |
338 | |
258 | poll_cb (); |
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259 | while (started > nthreads) |
339 | while (started > nthreads) |
260 | { |
340 | { |
261 | sched_yield (); |
341 | fd_set rfd; |
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342 | FD_ZERO(&rfd); |
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343 | FD_SET(respipe[0], &rfd); |
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344 | |
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345 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
262 | poll_cb (); |
346 | poll_cb (aTHX); |
263 | } |
347 | } |
264 | |
348 | |
265 | void |
349 | void |
266 | aio_read(fh,offset,length,data,dataoffset,callback) |
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267 | PerlIO * fh |
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268 | UV offset |
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269 | STRLEN length |
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270 | SV * data |
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271 | STRLEN dataoffset |
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272 | SV * callback |
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273 | PROTOTYPE: $$$$$$ |
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274 | ALIAS: |
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275 | aio_write = 1 |
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276 | CODE: |
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277 | SvUPGRADE (data, SVt_PV); |
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278 | SvPOK_on (data); |
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279 | read_write (aTHX_ ix, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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280 | |
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281 | void |
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282 | aio_open(pathname,flags,mode,callback) |
350 | aio_open(pathname,flags,mode,callback) |
283 | char * pathname |
351 | SV * pathname |
284 | int flags |
352 | int flags |
285 | int mode |
353 | int mode |
286 | SV * callback |
354 | SV * callback |
287 | PROTOTYPE: $$$$ |
355 | PROTOTYPE: $$$$ |
288 | CODE: |
356 | CODE: |
289 | aio_req req; |
357 | aio_req req; |
290 | |
358 | |
291 | New (0, req, 1, aio_cb); |
359 | Newz (0, req, 1, aio_cb); |
292 | |
360 | |
293 | if (!req) |
361 | if (!req) |
294 | croak ("out of memory during aio_req allocation"); |
362 | croak ("out of memory during aio_req allocation"); |
295 | |
363 | |
296 | req->type = REQ_OPEN; |
364 | req->type = REQ_OPEN; |
297 | req->dataptr = pathname; |
365 | req->data = newSVsv (pathname); |
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366 | req->dataptr = SvPV_nolen (req->data); |
298 | req->fd = flags; |
367 | req->fd = flags; |
299 | req->mode = mode; |
368 | req->mode = mode; |
300 | req->callback = SvREFCNT_inc (callback); |
369 | req->callback = SvREFCNT_inc (callback); |
301 | |
370 | |
302 | send_req (req); |
371 | send_req (req); |
303 | |
372 | |
304 | void |
373 | void |
305 | aio_close(fh,callback) |
374 | aio_close(fh,callback) |
306 | PerlIO * fh |
375 | InputStream fh |
307 | SV * callback |
376 | SV * callback |
308 | PROTOTYPE: $ |
377 | PROTOTYPE: $$ |
309 | CODE: |
378 | CODE: |
310 | aio_req req; |
379 | aio_req req; |
311 | |
380 | |
312 | New (0, req, 1, aio_cb); |
381 | Newz (0, req, 1, aio_cb); |
313 | |
382 | |
314 | if (!req) |
383 | if (!req) |
315 | croak ("out of memory during aio_req allocation"); |
384 | croak ("out of memory during aio_req allocation"); |
316 | |
385 | |
317 | req->type = REQ_CLOSE; |
386 | req->type = REQ_CLOSE; |
318 | req->fd = PerlIO_fileno (fh); |
387 | req->fd = PerlIO_fileno (fh); |
319 | req->callback = SvREFCNT_inc (callback); |
388 | req->callback = SvREFCNT_inc (callback); |
320 | |
389 | |
321 | send_req (req); |
390 | send_req (req); |
322 | |
391 | |
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392 | void |
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393 | aio_read(fh,offset,length,data,dataoffset,callback) |
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394 | InputStream fh |
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395 | UV offset |
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396 | IV length |
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397 | SV * data |
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398 | IV dataoffset |
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399 | SV * callback |
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400 | PROTOTYPE: $$$$$$ |
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401 | CODE: |
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402 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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403 | |
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404 | void |
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405 | aio_write(fh,offset,length,data,dataoffset,callback) |
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406 | OutputStream fh |
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407 | UV offset |
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408 | IV length |
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409 | SV * data |
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410 | IV dataoffset |
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411 | SV * callback |
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412 | PROTOTYPE: $$$$$$ |
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413 | CODE: |
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414 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
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415 | |
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416 | void |
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417 | aio_stat(fh_or_path,callback) |
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418 | SV * fh_or_path |
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419 | SV * callback |
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420 | PROTOTYPE: $$ |
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421 | ALIAS: |
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422 | aio_lstat = 1 |
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423 | CODE: |
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424 | aio_req req; |
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425 | |
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426 | Newz (0, req, 1, aio_cb); |
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427 | |
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428 | if (!req) |
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429 | croak ("out of memory during aio_req allocation"); |
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430 | |
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431 | New (0, req->statdata, 1, struct stat64); |
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432 | |
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433 | if (!req->statdata) |
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434 | croak ("out of memory during aio_req->statdata allocation"); |
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435 | |
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436 | if (SvPOK (fh_or_path)) |
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437 | { |
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438 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
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439 | req->data = newSVsv (fh_or_path); |
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440 | req->dataptr = SvPV_nolen (req->data); |
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441 | } |
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442 | else |
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443 | { |
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444 | req->type = REQ_FSTAT; |
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445 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
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446 | } |
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447 | |
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448 | req->callback = SvREFCNT_inc (callback); |
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449 | |
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450 | send_req (req); |
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451 | |
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452 | void |
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453 | aio_unlink(pathname,callback) |
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454 | SV * pathname |
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455 | SV * callback |
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456 | PROTOTYPE: $$ |
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457 | CODE: |
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458 | aio_req req; |
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459 | |
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460 | Newz (0, req, 1, aio_cb); |
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461 | |
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462 | if (!req) |
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463 | croak ("out of memory during aio_req allocation"); |
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464 | |
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465 | req->type = REQ_UNLINK; |
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466 | req->data = newSVsv (pathname); |
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467 | req->dataptr = SvPV_nolen (req->data); |
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468 | req->callback = SvREFCNT_inc (callback); |
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469 | |
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470 | send_req (req); |
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471 | |
323 | int |
472 | int |
324 | poll_fileno() |
473 | poll_fileno() |
325 | PROTOTYPE: |
474 | PROTOTYPE: |
326 | CODE: |
475 | CODE: |
327 | RETVAL = respipe[0]; |
476 | RETVAL = respipe[0]; |