1 |
root |
1.20 |
#define _REENTRANT 1 |
2 |
root |
1.19 |
#include <errno.h> |
3 |
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4 |
root |
1.15 |
#include "EXTERN.h" |
5 |
root |
1.1 |
#include "perl.h" |
6 |
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#include "XSUB.h" |
7 |
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8 |
root |
1.16 |
#include "autoconf/config.h" |
9 |
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10 |
root |
1.32 |
#include <pthread.h> |
11 |
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12 |
root |
1.37 |
#include <stddef.h> |
13 |
root |
1.1 |
#include <sys/types.h> |
14 |
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#include <sys/stat.h> |
15 |
root |
1.37 |
#include <limits.h> |
16 |
root |
1.1 |
#include <unistd.h> |
17 |
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#include <fcntl.h> |
18 |
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#include <signal.h> |
19 |
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#include <sched.h> |
20 |
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21 |
root |
1.32 |
#if HAVE_SENDFILE |
22 |
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# if __linux |
23 |
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# include <sys/sendfile.h> |
24 |
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# elif __freebsd |
25 |
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# include <sys/socket.h> |
26 |
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# include <sys/uio.h> |
27 |
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# elif __hpux |
28 |
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# include <sys/socket.h> |
29 |
root |
1.35 |
# elif __solaris /* not yet */ |
30 |
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# include <sys/sendfile.h> |
31 |
root |
1.34 |
# else |
32 |
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# error sendfile support requested but not available |
33 |
root |
1.32 |
# endif |
34 |
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#endif |
35 |
root |
1.1 |
|
36 |
root |
1.4 |
#if __ia64 |
37 |
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# define STACKSIZE 65536 |
38 |
root |
1.1 |
#else |
39 |
root |
1.37 |
# define STACKSIZE 8192 |
40 |
root |
1.1 |
#endif |
41 |
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42 |
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enum { |
43 |
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REQ_QUIT, |
44 |
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REQ_OPEN, REQ_CLOSE, |
45 |
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REQ_READ, REQ_WRITE, REQ_READAHEAD, |
46 |
root |
1.32 |
REQ_SENDFILE, |
47 |
root |
1.22 |
REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
48 |
root |
1.1 |
REQ_FSYNC, REQ_FDATASYNC, |
49 |
root |
1.23 |
REQ_UNLINK, REQ_RMDIR, |
50 |
root |
1.37 |
REQ_READDIR, |
51 |
root |
1.22 |
REQ_SYMLINK, |
52 |
root |
1.1 |
}; |
53 |
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54 |
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typedef struct aio_cb { |
55 |
root |
1.3 |
struct aio_cb *volatile next; |
56 |
root |
1.1 |
|
57 |
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int type; |
58 |
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|
59 |
root |
1.37 |
/* should receive a cleanup, with unions */ |
60 |
root |
1.32 |
int fd, fd2; |
61 |
root |
1.1 |
off_t offset; |
62 |
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size_t length; |
63 |
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ssize_t result; |
64 |
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mode_t mode; /* open */ |
65 |
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int errorno; |
66 |
root |
1.32 |
SV *data, *callback; |
67 |
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SV *fh, *fh2; |
68 |
root |
1.22 |
void *dataptr, *data2ptr; |
69 |
root |
1.1 |
STRLEN dataoffset; |
70 |
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71 |
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Stat_t *statdata; |
72 |
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} aio_cb; |
73 |
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74 |
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typedef aio_cb *aio_req; |
75 |
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76 |
root |
1.30 |
static int started, wanted; |
77 |
root |
1.11 |
static volatile int nreqs; |
78 |
root |
1.4 |
static int max_outstanding = 1<<30; |
79 |
root |
1.3 |
static int respipe [2]; |
80 |
root |
1.1 |
|
81 |
root |
1.3 |
static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
82 |
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static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
83 |
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static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
84 |
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85 |
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static volatile aio_req reqs, reqe; /* queue start, queue end */ |
86 |
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static volatile aio_req ress, rese; /* queue start, queue end */ |
87 |
root |
1.1 |
|
88 |
root |
1.26 |
static void free_req (aio_req req) |
89 |
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{ |
90 |
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if (req->data) |
91 |
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SvREFCNT_dec (req->data); |
92 |
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93 |
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if (req->fh) |
94 |
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SvREFCNT_dec (req->fh); |
95 |
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96 |
root |
1.32 |
if (req->fh2) |
97 |
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SvREFCNT_dec (req->fh2); |
98 |
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99 |
root |
1.27 |
if (req->statdata) |
100 |
root |
1.26 |
Safefree (req->statdata); |
101 |
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102 |
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if (req->callback) |
103 |
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SvREFCNT_dec (req->callback); |
104 |
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105 |
root |
1.37 |
if (req->type == REQ_READDIR && req->result >= 0) |
106 |
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free (req->data2ptr); |
107 |
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108 |
root |
1.26 |
Safefree (req); |
109 |
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} |
110 |
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111 |
root |
1.1 |
static void |
112 |
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poll_wait () |
113 |
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{ |
114 |
root |
1.11 |
if (nreqs && !ress) |
115 |
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{ |
116 |
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fd_set rfd; |
117 |
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FD_ZERO(&rfd); |
118 |
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FD_SET(respipe [0], &rfd); |
119 |
root |
1.3 |
|
120 |
root |
1.11 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
121 |
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} |
122 |
root |
1.1 |
} |
123 |
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124 |
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static int |
125 |
root |
1.5 |
poll_cb () |
126 |
root |
1.1 |
{ |
127 |
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dSP; |
128 |
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int count = 0; |
129 |
root |
1.24 |
int do_croak = 0; |
130 |
root |
1.27 |
aio_req req; |
131 |
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132 |
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for (;;) |
133 |
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{ |
134 |
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pthread_mutex_lock (&reslock); |
135 |
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req = ress; |
136 |
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137 |
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if (req) |
138 |
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{ |
139 |
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ress = req->next; |
140 |
root |
1.11 |
|
141 |
root |
1.27 |
if (!ress) |
142 |
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{ |
143 |
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/* read any signals sent by the worker threads */ |
144 |
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char buf [32]; |
145 |
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while (read (respipe [0], buf, 32) == 32) |
146 |
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; |
147 |
root |
1.30 |
|
148 |
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rese = 0; |
149 |
root |
1.27 |
} |
150 |
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} |
151 |
root |
1.1 |
|
152 |
root |
1.27 |
pthread_mutex_unlock (&reslock); |
153 |
root |
1.3 |
|
154 |
root |
1.27 |
if (!req) |
155 |
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break; |
156 |
root |
1.3 |
|
157 |
root |
1.1 |
nreqs--; |
158 |
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|
159 |
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if (req->type == REQ_QUIT) |
160 |
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started--; |
161 |
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else |
162 |
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{ |
163 |
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int errorno = errno; |
164 |
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errno = req->errorno; |
165 |
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|
166 |
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if (req->type == REQ_READ) |
167 |
root |
1.27 |
SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
168 |
root |
1.1 |
|
169 |
root |
1.28 |
if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
170 |
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SvREADONLY_off (req->data); |
171 |
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|
172 |
root |
1.27 |
if (req->statdata) |
173 |
root |
1.1 |
{ |
174 |
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PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
175 |
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PL_laststatval = req->result; |
176 |
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PL_statcache = *(req->statdata); |
177 |
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} |
178 |
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|
179 |
root |
1.13 |
ENTER; |
180 |
root |
1.1 |
PUSHMARK (SP); |
181 |
root |
1.2 |
|
182 |
root |
1.37 |
if (req->type == REQ_READDIR) |
183 |
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{ |
184 |
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SV *rv = &PL_sv_undef; |
185 |
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186 |
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if (req->result >= 0) |
187 |
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{ |
188 |
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char *buf = req->data2ptr; |
189 |
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AV *av = newAV (); |
190 |
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191 |
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while (req->result) |
192 |
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{ |
193 |
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SV *sv = newSVpv (buf, 0); |
194 |
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195 |
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av_push (av, sv); |
196 |
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buf += SvCUR (sv) + 1; |
197 |
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req->result--; |
198 |
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} |
199 |
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|
200 |
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rv = sv_2mortal (newRV_noinc ((SV *)av)); |
201 |
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} |
202 |
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|
203 |
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XPUSHs (rv); |
204 |
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} |
205 |
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else |
206 |
root |
1.2 |
{ |
207 |
root |
1.37 |
XPUSHs (sv_2mortal (newSViv (req->result))); |
208 |
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|
209 |
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if (req->type == REQ_OPEN) |
210 |
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{ |
211 |
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/* convert fd to fh */ |
212 |
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SV *fh; |
213 |
root |
1.2 |
|
214 |
root |
1.37 |
PUTBACK; |
215 |
|
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call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
216 |
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SPAGAIN; |
217 |
root |
1.2 |
|
218 |
root |
1.37 |
fh = SvREFCNT_inc (POPs); |
219 |
root |
1.2 |
|
220 |
root |
1.37 |
PUSHMARK (SP); |
221 |
|
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XPUSHs (sv_2mortal (fh)); |
222 |
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} |
223 |
root |
1.2 |
} |
224 |
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|
225 |
root |
1.8 |
if (SvOK (req->callback)) |
226 |
|
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{ |
227 |
|
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PUTBACK; |
228 |
|
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call_sv (req->callback, G_VOID | G_EVAL); |
229 |
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SPAGAIN; |
230 |
root |
1.27 |
|
231 |
|
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if (SvTRUE (ERRSV)) |
232 |
|
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{ |
233 |
|
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free_req (req); |
234 |
|
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croak (0); |
235 |
|
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} |
236 |
root |
1.8 |
} |
237 |
root |
1.13 |
|
238 |
root |
1.26 |
LEAVE; |
239 |
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|
240 |
root |
1.1 |
errno = errorno; |
241 |
|
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count++; |
242 |
|
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} |
243 |
|
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|
244 |
root |
1.27 |
free_req (req); |
245 |
root |
1.1 |
} |
246 |
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|
247 |
|
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return count; |
248 |
|
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} |
249 |
|
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|
250 |
root |
1.4 |
static void *aio_proc(void *arg); |
251 |
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|
252 |
|
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static void |
253 |
|
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start_thread (void) |
254 |
|
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{ |
255 |
|
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sigset_t fullsigset, oldsigset; |
256 |
|
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pthread_t tid; |
257 |
|
|
pthread_attr_t attr; |
258 |
|
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|
259 |
|
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pthread_attr_init (&attr); |
260 |
|
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pthread_attr_setstacksize (&attr, STACKSIZE); |
261 |
root |
1.31 |
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
262 |
root |
1.4 |
|
263 |
|
|
sigfillset (&fullsigset); |
264 |
|
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sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
265 |
|
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|
266 |
|
|
if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
267 |
|
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started++; |
268 |
|
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|
269 |
|
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sigprocmask (SIG_SETMASK, &oldsigset, 0); |
270 |
|
|
} |
271 |
|
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|
272 |
|
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static void |
273 |
|
|
send_req (aio_req req) |
274 |
|
|
{ |
275 |
root |
1.30 |
while (started < wanted && nreqs >= started) |
276 |
|
|
start_thread (); |
277 |
|
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|
278 |
root |
1.4 |
nreqs++; |
279 |
|
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|
280 |
|
|
pthread_mutex_lock (&reqlock); |
281 |
|
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|
282 |
|
|
req->next = 0; |
283 |
|
|
|
284 |
|
|
if (reqe) |
285 |
|
|
{ |
286 |
|
|
reqe->next = req; |
287 |
|
|
reqe = req; |
288 |
|
|
} |
289 |
|
|
else |
290 |
|
|
reqe = reqs = req; |
291 |
|
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|
292 |
|
|
pthread_cond_signal (&reqwait); |
293 |
|
|
pthread_mutex_unlock (&reqlock); |
294 |
|
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|
295 |
root |
1.27 |
if (nreqs > max_outstanding) |
296 |
|
|
for (;;) |
297 |
|
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{ |
298 |
|
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poll_cb (); |
299 |
|
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|
300 |
|
|
if (nreqs <= max_outstanding) |
301 |
|
|
break; |
302 |
|
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|
303 |
|
|
poll_wait (); |
304 |
|
|
} |
305 |
root |
1.4 |
} |
306 |
|
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|
307 |
|
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static void |
308 |
|
|
end_thread (void) |
309 |
|
|
{ |
310 |
|
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aio_req req; |
311 |
root |
1.26 |
Newz (0, req, 1, aio_cb); |
312 |
root |
1.4 |
req->type = REQ_QUIT; |
313 |
|
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|
314 |
|
|
send_req (req); |
315 |
|
|
} |
316 |
|
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|
317 |
root |
1.22 |
static void min_parallel (int nthreads) |
318 |
|
|
{ |
319 |
root |
1.30 |
if (wanted < nthreads) |
320 |
|
|
wanted = nthreads; |
321 |
root |
1.22 |
} |
322 |
|
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|
323 |
|
|
static void max_parallel (int nthreads) |
324 |
|
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{ |
325 |
|
|
int cur = started; |
326 |
root |
1.27 |
|
327 |
root |
1.30 |
if (wanted > nthreads) |
328 |
|
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wanted = nthreads; |
329 |
|
|
|
330 |
|
|
while (cur > wanted) |
331 |
|
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{ |
332 |
root |
1.22 |
end_thread (); |
333 |
|
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cur--; |
334 |
|
|
} |
335 |
|
|
|
336 |
root |
1.30 |
while (started > wanted) |
337 |
root |
1.22 |
{ |
338 |
|
|
poll_wait (); |
339 |
|
|
poll_cb (); |
340 |
|
|
} |
341 |
|
|
} |
342 |
|
|
|
343 |
root |
1.26 |
static void create_pipe () |
344 |
root |
1.22 |
{ |
345 |
root |
1.26 |
if (pipe (respipe)) |
346 |
|
|
croak ("unable to initialize result pipe"); |
347 |
root |
1.22 |
|
348 |
root |
1.26 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
349 |
|
|
croak ("cannot set result pipe to nonblocking mode"); |
350 |
root |
1.22 |
|
351 |
root |
1.26 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
352 |
|
|
croak ("cannot set result pipe to nonblocking mode"); |
353 |
|
|
} |
354 |
root |
1.22 |
|
355 |
|
|
/*****************************************************************************/ |
356 |
root |
1.17 |
/* work around various missing functions */ |
357 |
|
|
|
358 |
|
|
#if !HAVE_PREADWRITE |
359 |
|
|
# define pread aio_pread |
360 |
|
|
# define pwrite aio_pwrite |
361 |
|
|
|
362 |
|
|
/* |
363 |
|
|
* make our pread/pwrite safe against themselves, but not against |
364 |
|
|
* normal read/write by using a mutex. slows down execution a lot, |
365 |
|
|
* but that's your problem, not mine. |
366 |
|
|
*/ |
367 |
root |
1.37 |
static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
368 |
root |
1.17 |
|
369 |
|
|
static ssize_t |
370 |
|
|
pread (int fd, void *buf, size_t count, off_t offset) |
371 |
|
|
{ |
372 |
|
|
ssize_t res; |
373 |
|
|
off_t ooffset; |
374 |
|
|
|
375 |
root |
1.37 |
pthread_mutex_lock (&preadwritelock); |
376 |
root |
1.17 |
ooffset = lseek (fd, 0, SEEK_CUR); |
377 |
|
|
lseek (fd, offset, SEEK_SET); |
378 |
|
|
res = read (fd, buf, count); |
379 |
|
|
lseek (fd, ooffset, SEEK_SET); |
380 |
root |
1.37 |
pthread_mutex_unlock (&preadwritelock); |
381 |
root |
1.17 |
|
382 |
|
|
return res; |
383 |
|
|
} |
384 |
|
|
|
385 |
|
|
static ssize_t |
386 |
|
|
pwrite (int fd, void *buf, size_t count, off_t offset) |
387 |
|
|
{ |
388 |
|
|
ssize_t res; |
389 |
|
|
off_t ooffset; |
390 |
|
|
|
391 |
root |
1.37 |
pthread_mutex_lock (&preadwritelock); |
392 |
root |
1.17 |
ooffset = lseek (fd, 0, SEEK_CUR); |
393 |
|
|
lseek (fd, offset, SEEK_SET); |
394 |
|
|
res = write (fd, buf, count); |
395 |
|
|
lseek (fd, offset, SEEK_SET); |
396 |
root |
1.37 |
pthread_mutex_unlock (&preadwritelock); |
397 |
root |
1.17 |
|
398 |
|
|
return res; |
399 |
|
|
} |
400 |
|
|
#endif |
401 |
|
|
|
402 |
|
|
#if !HAVE_FDATASYNC |
403 |
|
|
# define fdatasync fsync |
404 |
|
|
#endif |
405 |
|
|
|
406 |
|
|
#if !HAVE_READAHEAD |
407 |
|
|
# define readahead aio_readahead |
408 |
|
|
|
409 |
|
|
static ssize_t |
410 |
|
|
readahead (int fd, off_t offset, size_t count) |
411 |
|
|
{ |
412 |
root |
1.37 |
char readahead_buf[4096]; |
413 |
|
|
|
414 |
root |
1.17 |
while (count > 0) |
415 |
|
|
{ |
416 |
|
|
size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
417 |
|
|
|
418 |
|
|
pread (fd, readahead_buf, len, offset); |
419 |
|
|
offset += len; |
420 |
|
|
count -= len; |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
errno = 0; |
424 |
|
|
} |
425 |
|
|
#endif |
426 |
|
|
|
427 |
root |
1.37 |
#if !HAVE_READDIR_R |
428 |
|
|
# define readdir_r aio_readdir_r |
429 |
|
|
|
430 |
|
|
static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
431 |
|
|
|
432 |
|
|
static int |
433 |
|
|
readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
434 |
|
|
{ |
435 |
|
|
struct dirent *e; |
436 |
|
|
int errorno; |
437 |
|
|
|
438 |
|
|
pthread_mutex_lock (&readdirlock); |
439 |
|
|
|
440 |
|
|
e = readdir (dirp); |
441 |
|
|
errorno = errno; |
442 |
|
|
|
443 |
|
|
if (e) |
444 |
|
|
{ |
445 |
|
|
*res = ent; |
446 |
|
|
strcpy (ent->d_name, e->d_name); |
447 |
|
|
} |
448 |
|
|
else |
449 |
|
|
*res = 0; |
450 |
|
|
|
451 |
|
|
pthread_mutex_unlock (&readdirlock); |
452 |
|
|
|
453 |
|
|
errno = errorno; |
454 |
|
|
return e ? 0 : -1; |
455 |
|
|
} |
456 |
|
|
#endif |
457 |
|
|
|
458 |
root |
1.32 |
/* sendfile always needs emulation */ |
459 |
|
|
static ssize_t |
460 |
|
|
sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
461 |
|
|
{ |
462 |
root |
1.37 |
ssize_t res; |
463 |
root |
1.32 |
|
464 |
root |
1.37 |
if (!count) |
465 |
|
|
return 0; |
466 |
root |
1.32 |
|
467 |
root |
1.35 |
#if HAVE_SENDFILE |
468 |
|
|
# if __linux |
469 |
root |
1.37 |
res = sendfile (ofd, ifd, &offset, count); |
470 |
root |
1.32 |
|
471 |
root |
1.35 |
# elif __freebsd |
472 |
root |
1.37 |
/* |
473 |
|
|
* Of course, the freebsd sendfile is a dire hack with no thoughts |
474 |
|
|
* wasted on making it similar to other I/O functions. |
475 |
|
|
*/ |
476 |
|
|
{ |
477 |
|
|
off_t sbytes; |
478 |
|
|
res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
479 |
|
|
|
480 |
|
|
if (res < 0 && sbytes) |
481 |
|
|
/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
482 |
|
|
res = sbytes; |
483 |
|
|
} |
484 |
root |
1.32 |
|
485 |
root |
1.35 |
# elif __hpux |
486 |
root |
1.37 |
res = sendfile (ofd, ifd, offset, count, 0, 0); |
487 |
root |
1.32 |
|
488 |
root |
1.35 |
# elif __solaris |
489 |
root |
1.37 |
{ |
490 |
|
|
struct sendfilevec vec; |
491 |
|
|
size_t sbytes; |
492 |
|
|
|
493 |
|
|
vec.sfv_fd = ifd; |
494 |
|
|
vec.sfv_flag = 0; |
495 |
|
|
vec.sfv_off = offset; |
496 |
|
|
vec.sfv_len = count; |
497 |
|
|
|
498 |
|
|
res = sendfilev (ofd, &vec, 1, &sbytes); |
499 |
|
|
|
500 |
|
|
if (res < 0 && sbytes) |
501 |
|
|
res = sbytes; |
502 |
|
|
} |
503 |
root |
1.35 |
|
504 |
|
|
# else |
505 |
root |
1.37 |
res = -1; |
506 |
|
|
errno = ENOSYS; |
507 |
root |
1.35 |
# endif |
508 |
root |
1.32 |
#endif |
509 |
|
|
|
510 |
root |
1.37 |
if (res < 0 |
511 |
|
|
&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
512 |
root |
1.35 |
#if __solaris |
513 |
root |
1.37 |
|| errno == EAFNOSUPPORT || errno == EPROTOTYPE |
514 |
root |
1.35 |
#endif |
515 |
root |
1.37 |
) |
516 |
|
|
) |
517 |
|
|
{ |
518 |
|
|
/* emulate sendfile. this is a major pain in the ass */ |
519 |
|
|
char buf[4096]; |
520 |
|
|
res = 0; |
521 |
|
|
|
522 |
|
|
for (;;) |
523 |
|
|
{ |
524 |
|
|
ssize_t cnt; |
525 |
|
|
|
526 |
|
|
cnt = pread (ifd, buf, 4096, offset); |
527 |
root |
1.32 |
|
528 |
root |
1.37 |
if (cnt <= 0) |
529 |
|
|
{ |
530 |
|
|
if (cnt && !res) res = -1; |
531 |
|
|
break; |
532 |
|
|
} |
533 |
|
|
|
534 |
|
|
cnt = write (ofd, buf, cnt); |
535 |
|
|
|
536 |
|
|
if (cnt <= 0) |
537 |
|
|
{ |
538 |
|
|
if (cnt && !res) res = -1; |
539 |
|
|
break; |
540 |
|
|
} |
541 |
|
|
|
542 |
|
|
offset += cnt; |
543 |
|
|
res += cnt; |
544 |
|
|
} |
545 |
|
|
} |
546 |
|
|
|
547 |
|
|
return res; |
548 |
|
|
} |
549 |
|
|
|
550 |
|
|
/* read a full directory */ |
551 |
|
|
static int |
552 |
|
|
scandir_ (const char *path, void **namesp) |
553 |
|
|
{ |
554 |
|
|
DIR *dirp = opendir (path); |
555 |
|
|
union |
556 |
|
|
{ |
557 |
|
|
struct dirent d; |
558 |
|
|
char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
559 |
|
|
} u; |
560 |
|
|
struct dirent *entp; |
561 |
|
|
char *name, *names; |
562 |
|
|
int memlen = 4096; |
563 |
|
|
int memofs = 0; |
564 |
|
|
int res = 0; |
565 |
|
|
int errorno; |
566 |
|
|
|
567 |
|
|
if (!dirp) |
568 |
|
|
return -1; |
569 |
|
|
|
570 |
|
|
names = malloc (memlen); |
571 |
|
|
|
572 |
|
|
for (;;) |
573 |
|
|
{ |
574 |
|
|
errno = 0, readdir_r (dirp, &u.d, &entp); |
575 |
|
|
|
576 |
|
|
if (!entp) |
577 |
|
|
break; |
578 |
|
|
|
579 |
|
|
name = entp->d_name; |
580 |
|
|
|
581 |
|
|
if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
582 |
|
|
{ |
583 |
|
|
int len = strlen (name) + 1; |
584 |
|
|
|
585 |
|
|
res++; |
586 |
|
|
|
587 |
|
|
while (memofs + len > memlen) |
588 |
|
|
{ |
589 |
|
|
memlen *= 2; |
590 |
|
|
names = realloc (names, memlen); |
591 |
|
|
if (!names) |
592 |
|
|
break; |
593 |
|
|
} |
594 |
|
|
|
595 |
|
|
memcpy (names + memofs, name, len); |
596 |
|
|
memofs += len; |
597 |
|
|
} |
598 |
|
|
} |
599 |
|
|
|
600 |
|
|
errorno = errno; |
601 |
|
|
closedir (dirp); |
602 |
|
|
|
603 |
|
|
if (errorno) |
604 |
|
|
{ |
605 |
|
|
free (names); |
606 |
|
|
errno = errorno; |
607 |
|
|
res = -1; |
608 |
|
|
} |
609 |
|
|
|
610 |
|
|
*namesp = (void *)names; |
611 |
|
|
return res; |
612 |
root |
1.32 |
} |
613 |
|
|
|
614 |
root |
1.22 |
/*****************************************************************************/ |
615 |
|
|
|
616 |
root |
1.1 |
static void * |
617 |
|
|
aio_proc (void *thr_arg) |
618 |
|
|
{ |
619 |
|
|
aio_req req; |
620 |
root |
1.3 |
int type; |
621 |
root |
1.1 |
|
622 |
root |
1.3 |
do |
623 |
root |
1.1 |
{ |
624 |
root |
1.3 |
pthread_mutex_lock (&reqlock); |
625 |
|
|
|
626 |
|
|
for (;;) |
627 |
|
|
{ |
628 |
|
|
req = reqs; |
629 |
|
|
|
630 |
|
|
if (reqs) |
631 |
|
|
{ |
632 |
|
|
reqs = reqs->next; |
633 |
|
|
if (!reqs) reqe = 0; |
634 |
|
|
} |
635 |
|
|
|
636 |
|
|
if (req) |
637 |
|
|
break; |
638 |
|
|
|
639 |
|
|
pthread_cond_wait (&reqwait, &reqlock); |
640 |
|
|
} |
641 |
|
|
|
642 |
|
|
pthread_mutex_unlock (&reqlock); |
643 |
|
|
|
644 |
root |
1.1 |
errno = 0; /* strictly unnecessary */ |
645 |
|
|
|
646 |
root |
1.3 |
type = req->type; |
647 |
|
|
|
648 |
|
|
switch (type) |
649 |
root |
1.1 |
{ |
650 |
root |
1.10 |
case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
651 |
|
|
case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
652 |
root |
1.16 |
|
653 |
root |
1.1 |
case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
654 |
root |
1.32 |
case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
655 |
root |
1.1 |
|
656 |
|
|
case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
657 |
|
|
case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
658 |
|
|
case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
659 |
|
|
|
660 |
|
|
case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
661 |
|
|
case REQ_CLOSE: req->result = close (req->fd); break; |
662 |
|
|
case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
663 |
root |
1.22 |
case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
664 |
|
|
case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
665 |
root |
1.1 |
|
666 |
root |
1.17 |
case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
667 |
root |
1.1 |
case REQ_FSYNC: req->result = fsync (req->fd); break; |
668 |
root |
1.37 |
case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
669 |
root |
1.1 |
|
670 |
|
|
case REQ_QUIT: |
671 |
root |
1.3 |
break; |
672 |
root |
1.1 |
|
673 |
|
|
default: |
674 |
|
|
req->result = ENOSYS; |
675 |
|
|
break; |
676 |
|
|
} |
677 |
|
|
|
678 |
|
|
req->errorno = errno; |
679 |
root |
1.3 |
|
680 |
|
|
pthread_mutex_lock (&reslock); |
681 |
|
|
|
682 |
|
|
req->next = 0; |
683 |
|
|
|
684 |
|
|
if (rese) |
685 |
|
|
{ |
686 |
|
|
rese->next = req; |
687 |
|
|
rese = req; |
688 |
|
|
} |
689 |
|
|
else |
690 |
|
|
{ |
691 |
|
|
rese = ress = req; |
692 |
|
|
|
693 |
|
|
/* write a dummy byte to the pipe so fh becomes ready */ |
694 |
|
|
write (respipe [1], &respipe, 1); |
695 |
|
|
} |
696 |
|
|
|
697 |
|
|
pthread_mutex_unlock (&reslock); |
698 |
root |
1.1 |
} |
699 |
root |
1.3 |
while (type != REQ_QUIT); |
700 |
root |
1.1 |
|
701 |
|
|
return 0; |
702 |
|
|
} |
703 |
|
|
|
704 |
root |
1.37 |
/*****************************************************************************/ |
705 |
|
|
|
706 |
|
|
static void atfork_prepare (void) |
707 |
|
|
{ |
708 |
|
|
pthread_mutex_lock (&reqlock); |
709 |
|
|
pthread_mutex_lock (&reslock); |
710 |
|
|
#if !HAVE_PREADWRITE |
711 |
|
|
pthread_mutex_lock (&preadwritelock); |
712 |
|
|
#endif |
713 |
|
|
#if !HAVE_READDIR_R |
714 |
|
|
pthread_mutex_lock (&readdirlock); |
715 |
|
|
#endif |
716 |
|
|
} |
717 |
|
|
|
718 |
|
|
static void atfork_parent (void) |
719 |
|
|
{ |
720 |
|
|
#if !HAVE_READDIR_R |
721 |
|
|
pthread_mutex_unlock (&readdirlock); |
722 |
|
|
#endif |
723 |
|
|
#if !HAVE_PREADWRITE |
724 |
|
|
pthread_mutex_unlock (&preadwritelock); |
725 |
|
|
#endif |
726 |
|
|
pthread_mutex_unlock (&reslock); |
727 |
|
|
pthread_mutex_unlock (&reqlock); |
728 |
|
|
} |
729 |
|
|
|
730 |
|
|
static void atfork_child (void) |
731 |
|
|
{ |
732 |
|
|
aio_req prv; |
733 |
|
|
|
734 |
|
|
started = 0; |
735 |
|
|
|
736 |
|
|
while (reqs) |
737 |
|
|
{ |
738 |
|
|
prv = reqs; |
739 |
|
|
reqs = prv->next; |
740 |
|
|
free_req (prv); |
741 |
|
|
} |
742 |
|
|
|
743 |
|
|
reqs = reqe = 0; |
744 |
|
|
|
745 |
|
|
while (ress) |
746 |
|
|
{ |
747 |
|
|
prv = ress; |
748 |
|
|
ress = prv->next; |
749 |
|
|
free_req (prv); |
750 |
|
|
} |
751 |
|
|
|
752 |
|
|
ress = rese = 0; |
753 |
|
|
|
754 |
|
|
close (respipe [0]); |
755 |
|
|
close (respipe [1]); |
756 |
|
|
create_pipe (); |
757 |
|
|
|
758 |
|
|
atfork_parent (); |
759 |
|
|
} |
760 |
|
|
|
761 |
root |
1.22 |
#define dREQ \ |
762 |
|
|
aio_req req; \ |
763 |
|
|
\ |
764 |
|
|
if (SvOK (callback) && !SvROK (callback)) \ |
765 |
|
|
croak ("clalback must be undef or of reference type"); \ |
766 |
|
|
\ |
767 |
|
|
Newz (0, req, 1, aio_cb); \ |
768 |
|
|
if (!req) \ |
769 |
|
|
croak ("out of memory during aio_req allocation"); \ |
770 |
|
|
\ |
771 |
root |
1.27 |
req->callback = newSVsv (callback); |
772 |
root |
1.22 |
|
773 |
root |
1.1 |
MODULE = IO::AIO PACKAGE = IO::AIO |
774 |
|
|
|
775 |
root |
1.8 |
PROTOTYPES: ENABLE |
776 |
|
|
|
777 |
root |
1.1 |
BOOT: |
778 |
|
|
{ |
779 |
root |
1.26 |
create_pipe (); |
780 |
root |
1.22 |
pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
781 |
root |
1.1 |
} |
782 |
|
|
|
783 |
|
|
void |
784 |
|
|
min_parallel(nthreads) |
785 |
|
|
int nthreads |
786 |
|
|
PROTOTYPE: $ |
787 |
|
|
|
788 |
|
|
void |
789 |
|
|
max_parallel(nthreads) |
790 |
|
|
int nthreads |
791 |
|
|
PROTOTYPE: $ |
792 |
|
|
|
793 |
root |
1.4 |
int |
794 |
|
|
max_outstanding(nreqs) |
795 |
|
|
int nreqs |
796 |
|
|
PROTOTYPE: $ |
797 |
|
|
CODE: |
798 |
|
|
RETVAL = max_outstanding; |
799 |
|
|
max_outstanding = nreqs; |
800 |
|
|
|
801 |
root |
1.1 |
void |
802 |
root |
1.8 |
aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
803 |
root |
1.1 |
SV * pathname |
804 |
|
|
int flags |
805 |
|
|
int mode |
806 |
|
|
SV * callback |
807 |
root |
1.8 |
PROTOTYPE: $$$;$ |
808 |
root |
1.1 |
CODE: |
809 |
|
|
{ |
810 |
root |
1.22 |
dREQ; |
811 |
root |
1.1 |
|
812 |
|
|
req->type = REQ_OPEN; |
813 |
|
|
req->data = newSVsv (pathname); |
814 |
root |
1.22 |
req->dataptr = SvPVbyte_nolen (req->data); |
815 |
root |
1.1 |
req->fd = flags; |
816 |
|
|
req->mode = mode; |
817 |
|
|
|
818 |
|
|
send_req (req); |
819 |
|
|
} |
820 |
|
|
|
821 |
|
|
void |
822 |
root |
1.8 |
aio_close(fh,callback=&PL_sv_undef) |
823 |
root |
1.13 |
SV * fh |
824 |
|
|
SV * callback |
825 |
root |
1.8 |
PROTOTYPE: $;$ |
826 |
root |
1.1 |
ALIAS: |
827 |
|
|
aio_close = REQ_CLOSE |
828 |
|
|
aio_fsync = REQ_FSYNC |
829 |
|
|
aio_fdatasync = REQ_FDATASYNC |
830 |
|
|
CODE: |
831 |
|
|
{ |
832 |
root |
1.22 |
dREQ; |
833 |
root |
1.1 |
|
834 |
|
|
req->type = ix; |
835 |
root |
1.13 |
req->fh = newSVsv (fh); |
836 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
837 |
root |
1.1 |
|
838 |
|
|
send_req (req); |
839 |
|
|
} |
840 |
|
|
|
841 |
|
|
void |
842 |
root |
1.8 |
aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
843 |
root |
1.13 |
SV * fh |
844 |
|
|
UV offset |
845 |
root |
1.32 |
UV length |
846 |
root |
1.13 |
SV * data |
847 |
root |
1.32 |
UV dataoffset |
848 |
root |
1.13 |
SV * callback |
849 |
|
|
ALIAS: |
850 |
|
|
aio_read = REQ_READ |
851 |
|
|
aio_write = REQ_WRITE |
852 |
root |
1.8 |
PROTOTYPE: $$$$$;$ |
853 |
root |
1.1 |
CODE: |
854 |
root |
1.13 |
{ |
855 |
|
|
aio_req req; |
856 |
|
|
STRLEN svlen; |
857 |
root |
1.21 |
char *svptr = SvPVbyte (data, svlen); |
858 |
root |
1.13 |
|
859 |
|
|
SvUPGRADE (data, SVt_PV); |
860 |
|
|
SvPOK_on (data); |
861 |
root |
1.1 |
|
862 |
root |
1.13 |
if (dataoffset < 0) |
863 |
|
|
dataoffset += svlen; |
864 |
|
|
|
865 |
|
|
if (dataoffset < 0 || dataoffset > svlen) |
866 |
|
|
croak ("data offset outside of string"); |
867 |
|
|
|
868 |
|
|
if (ix == REQ_WRITE) |
869 |
|
|
{ |
870 |
|
|
/* write: check length and adjust. */ |
871 |
|
|
if (length < 0 || length + dataoffset > svlen) |
872 |
|
|
length = svlen - dataoffset; |
873 |
|
|
} |
874 |
|
|
else |
875 |
|
|
{ |
876 |
|
|
/* read: grow scalar as necessary */ |
877 |
|
|
svptr = SvGROW (data, length + dataoffset); |
878 |
|
|
} |
879 |
|
|
|
880 |
|
|
if (length < 0) |
881 |
|
|
croak ("length must not be negative"); |
882 |
|
|
|
883 |
root |
1.22 |
{ |
884 |
|
|
dREQ; |
885 |
root |
1.13 |
|
886 |
root |
1.22 |
req->type = ix; |
887 |
|
|
req->fh = newSVsv (fh); |
888 |
|
|
req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
889 |
|
|
: IoOFP (sv_2io (fh))); |
890 |
|
|
req->offset = offset; |
891 |
|
|
req->length = length; |
892 |
|
|
req->data = SvREFCNT_inc (data); |
893 |
|
|
req->dataptr = (char *)svptr + dataoffset; |
894 |
root |
1.13 |
|
895 |
root |
1.28 |
if (!SvREADONLY (data)) |
896 |
|
|
{ |
897 |
|
|
SvREADONLY_on (data); |
898 |
|
|
req->data2ptr = (void *)data; |
899 |
|
|
} |
900 |
|
|
|
901 |
root |
1.22 |
send_req (req); |
902 |
|
|
} |
903 |
root |
1.13 |
} |
904 |
root |
1.1 |
|
905 |
|
|
void |
906 |
root |
1.32 |
aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
907 |
|
|
SV * out_fh |
908 |
|
|
SV * in_fh |
909 |
|
|
UV in_offset |
910 |
|
|
UV length |
911 |
|
|
SV * callback |
912 |
|
|
PROTOTYPE: $$$$;$ |
913 |
|
|
CODE: |
914 |
|
|
{ |
915 |
|
|
dREQ; |
916 |
|
|
|
917 |
|
|
req->type = REQ_SENDFILE; |
918 |
|
|
req->fh = newSVsv (out_fh); |
919 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
920 |
|
|
req->fh2 = newSVsv (in_fh); |
921 |
|
|
req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
922 |
|
|
req->offset = in_offset; |
923 |
|
|
req->length = length; |
924 |
|
|
|
925 |
|
|
send_req (req); |
926 |
|
|
} |
927 |
|
|
|
928 |
|
|
void |
929 |
root |
1.8 |
aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
930 |
root |
1.13 |
SV * fh |
931 |
|
|
UV offset |
932 |
|
|
IV length |
933 |
|
|
SV * callback |
934 |
root |
1.8 |
PROTOTYPE: $$$;$ |
935 |
root |
1.1 |
CODE: |
936 |
|
|
{ |
937 |
root |
1.22 |
dREQ; |
938 |
root |
1.1 |
|
939 |
|
|
req->type = REQ_READAHEAD; |
940 |
root |
1.13 |
req->fh = newSVsv (fh); |
941 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
942 |
root |
1.1 |
req->offset = offset; |
943 |
|
|
req->length = length; |
944 |
|
|
|
945 |
|
|
send_req (req); |
946 |
|
|
} |
947 |
|
|
|
948 |
|
|
void |
949 |
root |
1.8 |
aio_stat(fh_or_path,callback=&PL_sv_undef) |
950 |
root |
1.1 |
SV * fh_or_path |
951 |
|
|
SV * callback |
952 |
|
|
ALIAS: |
953 |
root |
1.8 |
aio_stat = REQ_STAT |
954 |
|
|
aio_lstat = REQ_LSTAT |
955 |
root |
1.1 |
CODE: |
956 |
|
|
{ |
957 |
root |
1.22 |
dREQ; |
958 |
root |
1.1 |
|
959 |
|
|
New (0, req->statdata, 1, Stat_t); |
960 |
|
|
if (!req->statdata) |
961 |
root |
1.27 |
{ |
962 |
|
|
free_req (req); |
963 |
|
|
croak ("out of memory during aio_req->statdata allocation"); |
964 |
|
|
} |
965 |
root |
1.1 |
|
966 |
|
|
if (SvPOK (fh_or_path)) |
967 |
|
|
{ |
968 |
root |
1.8 |
req->type = ix; |
969 |
root |
1.1 |
req->data = newSVsv (fh_or_path); |
970 |
root |
1.22 |
req->dataptr = SvPVbyte_nolen (req->data); |
971 |
root |
1.1 |
} |
972 |
|
|
else |
973 |
|
|
{ |
974 |
|
|
req->type = REQ_FSTAT; |
975 |
root |
1.13 |
req->fh = newSVsv (fh_or_path); |
976 |
root |
1.1 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
977 |
|
|
} |
978 |
|
|
|
979 |
|
|
send_req (req); |
980 |
|
|
} |
981 |
|
|
|
982 |
|
|
void |
983 |
root |
1.8 |
aio_unlink(pathname,callback=&PL_sv_undef) |
984 |
root |
1.1 |
SV * pathname |
985 |
|
|
SV * callback |
986 |
root |
1.22 |
ALIAS: |
987 |
|
|
aio_unlink = REQ_UNLINK |
988 |
|
|
aio_rmdir = REQ_RMDIR |
989 |
root |
1.1 |
CODE: |
990 |
|
|
{ |
991 |
root |
1.22 |
dREQ; |
992 |
root |
1.1 |
|
993 |
root |
1.22 |
req->type = ix; |
994 |
|
|
req->data = newSVsv (pathname); |
995 |
|
|
req->dataptr = SvPVbyte_nolen (req->data); |
996 |
root |
1.1 |
|
997 |
root |
1.22 |
send_req (req); |
998 |
|
|
} |
999 |
|
|
|
1000 |
|
|
void |
1001 |
|
|
aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
1002 |
|
|
SV * oldpath |
1003 |
|
|
SV * newpath |
1004 |
|
|
SV * callback |
1005 |
|
|
CODE: |
1006 |
|
|
{ |
1007 |
|
|
dREQ; |
1008 |
root |
1.1 |
|
1009 |
root |
1.22 |
req->type = REQ_SYMLINK; |
1010 |
|
|
req->fh = newSVsv (oldpath); |
1011 |
|
|
req->data2ptr = SvPVbyte_nolen (req->fh); |
1012 |
|
|
req->data = newSVsv (newpath); |
1013 |
|
|
req->dataptr = SvPVbyte_nolen (req->data); |
1014 |
root |
1.1 |
|
1015 |
|
|
send_req (req); |
1016 |
|
|
} |
1017 |
|
|
|
1018 |
root |
1.6 |
void |
1019 |
root |
1.37 |
aio_readdir(pathname,callback=&PL_sv_undef) |
1020 |
|
|
SV * pathname |
1021 |
|
|
SV * callback |
1022 |
|
|
CODE: |
1023 |
|
|
{ |
1024 |
|
|
dREQ; |
1025 |
|
|
|
1026 |
|
|
req->type = REQ_READDIR; |
1027 |
|
|
req->data = newSVsv (pathname); |
1028 |
|
|
req->dataptr = SvPVbyte_nolen (req->data); |
1029 |
|
|
|
1030 |
|
|
send_req (req); |
1031 |
|
|
} |
1032 |
|
|
|
1033 |
|
|
void |
1034 |
root |
1.6 |
flush() |
1035 |
|
|
PROTOTYPE: |
1036 |
|
|
CODE: |
1037 |
|
|
while (nreqs) |
1038 |
|
|
{ |
1039 |
|
|
poll_wait (); |
1040 |
|
|
poll_cb (); |
1041 |
|
|
} |
1042 |
|
|
|
1043 |
root |
1.7 |
void |
1044 |
|
|
poll() |
1045 |
|
|
PROTOTYPE: |
1046 |
|
|
CODE: |
1047 |
|
|
if (nreqs) |
1048 |
|
|
{ |
1049 |
|
|
poll_wait (); |
1050 |
|
|
poll_cb (); |
1051 |
|
|
} |
1052 |
|
|
|
1053 |
root |
1.1 |
int |
1054 |
|
|
poll_fileno() |
1055 |
|
|
PROTOTYPE: |
1056 |
|
|
CODE: |
1057 |
root |
1.3 |
RETVAL = respipe [0]; |
1058 |
root |
1.1 |
OUTPUT: |
1059 |
|
|
RETVAL |
1060 |
|
|
|
1061 |
|
|
int |
1062 |
|
|
poll_cb(...) |
1063 |
|
|
PROTOTYPE: |
1064 |
|
|
CODE: |
1065 |
root |
1.5 |
RETVAL = poll_cb (); |
1066 |
root |
1.1 |
OUTPUT: |
1067 |
|
|
RETVAL |
1068 |
|
|
|
1069 |
|
|
void |
1070 |
|
|
poll_wait() |
1071 |
|
|
PROTOTYPE: |
1072 |
|
|
CODE: |
1073 |
root |
1.3 |
if (nreqs) |
1074 |
|
|
poll_wait (); |
1075 |
root |
1.1 |
|
1076 |
|
|
int |
1077 |
|
|
nreqs() |
1078 |
|
|
PROTOTYPE: |
1079 |
|
|
CODE: |
1080 |
|
|
RETVAL = nreqs; |
1081 |
|
|
OUTPUT: |
1082 |
|
|
RETVAL |
1083 |
|
|
|