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" |
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#include "XSUB.h" |
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8 |
root |
1.16 |
#include "autoconf/config.h" |
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1.1 |
#include <sys/types.h> |
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#include <sys/stat.h> |
12 |
root |
1.10 |
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13 |
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1.1 |
#include <unistd.h> |
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#include <fcntl.h> |
15 |
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#include <signal.h> |
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#include <sched.h> |
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#include <pthread.h> |
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typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 |
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typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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24 |
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1.4 |
#if __ia64 |
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# define STACKSIZE 65536 |
26 |
root |
1.1 |
#else |
27 |
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1.4 |
# define STACKSIZE 4096 |
28 |
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1.1 |
#endif |
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enum { |
31 |
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REQ_QUIT, |
32 |
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REQ_OPEN, REQ_CLOSE, |
33 |
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REQ_READ, REQ_WRITE, REQ_READAHEAD, |
34 |
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1.22 |
REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 |
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1.1 |
REQ_FSYNC, REQ_FDATASYNC, |
36 |
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1.23 |
REQ_UNLINK, REQ_RMDIR, |
37 |
root |
1.22 |
REQ_SYMLINK, |
38 |
root |
1.1 |
}; |
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40 |
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typedef struct aio_cb { |
41 |
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1.3 |
struct aio_cb *volatile next; |
42 |
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1.1 |
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43 |
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int type; |
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45 |
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int fd; |
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off_t offset; |
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size_t length; |
48 |
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ssize_t result; |
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mode_t mode; /* open */ |
50 |
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int errorno; |
51 |
root |
1.13 |
SV *data, *callback, *fh; |
52 |
root |
1.22 |
void *dataptr, *data2ptr; |
53 |
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1.1 |
STRLEN dataoffset; |
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55 |
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Stat_t *statdata; |
56 |
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} aio_cb; |
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58 |
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typedef aio_cb *aio_req; |
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static int started; |
61 |
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1.11 |
static volatile int nreqs; |
62 |
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1.4 |
static int max_outstanding = 1<<30; |
63 |
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1.3 |
static int respipe [2]; |
64 |
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1.1 |
|
65 |
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1.3 |
static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
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static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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1.22 |
static pthread_mutex_t frklock = PTHREAD_MUTEX_INITIALIZER; |
68 |
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1.3 |
static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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70 |
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static volatile aio_req reqs, reqe; /* queue start, queue end */ |
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static volatile aio_req ress, rese; /* queue start, queue end */ |
72 |
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1.1 |
|
73 |
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1.26 |
static void free_req (aio_req req) |
74 |
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{ |
75 |
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if (req->data) |
76 |
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SvREFCNT_dec (req->data); |
77 |
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78 |
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if (req->fh) |
79 |
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SvREFCNT_dec (req->fh); |
80 |
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81 |
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if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
82 |
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Safefree (req->statdata); |
83 |
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84 |
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if (req->callback) |
85 |
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SvREFCNT_dec (req->callback); |
86 |
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87 |
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Safefree (req); |
88 |
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} |
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90 |
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1.1 |
static void |
91 |
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poll_wait () |
92 |
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{ |
93 |
root |
1.11 |
if (nreqs && !ress) |
94 |
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{ |
95 |
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fd_set rfd; |
96 |
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FD_ZERO(&rfd); |
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FD_SET(respipe [0], &rfd); |
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1.3 |
|
99 |
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1.11 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
100 |
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} |
101 |
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1.1 |
} |
102 |
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103 |
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static int |
104 |
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1.5 |
poll_cb () |
105 |
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1.1 |
{ |
106 |
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dSP; |
107 |
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int count = 0; |
108 |
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1.24 |
int do_croak = 0; |
109 |
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1.11 |
aio_req req, prv; |
110 |
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111 |
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pthread_mutex_lock (&reslock); |
112 |
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113 |
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1.3 |
{ |
114 |
root |
1.11 |
/* read any signals sent by the worker threads */ |
115 |
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1.3 |
char buf [32]; |
116 |
root |
1.22 |
while (read (respipe [0], buf, 32) == 32) |
117 |
root |
1.3 |
; |
118 |
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} |
119 |
root |
1.1 |
|
120 |
root |
1.11 |
req = ress; |
121 |
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ress = rese = 0; |
122 |
root |
1.3 |
|
123 |
root |
1.11 |
pthread_mutex_unlock (&reslock); |
124 |
root |
1.3 |
|
125 |
root |
1.11 |
while (req) |
126 |
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{ |
127 |
root |
1.1 |
nreqs--; |
128 |
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129 |
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if (req->type == REQ_QUIT) |
130 |
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started--; |
131 |
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else |
132 |
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{ |
133 |
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int errorno = errno; |
134 |
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errno = req->errorno; |
135 |
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136 |
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if (req->type == REQ_READ) |
137 |
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SvCUR_set (req->data, req->dataoffset |
138 |
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+ req->result > 0 ? req->result : 0); |
139 |
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140 |
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if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
141 |
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{ |
142 |
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PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
143 |
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PL_laststatval = req->result; |
144 |
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PL_statcache = *(req->statdata); |
145 |
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} |
146 |
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147 |
root |
1.13 |
ENTER; |
148 |
root |
1.1 |
PUSHMARK (SP); |
149 |
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XPUSHs (sv_2mortal (newSViv (req->result))); |
150 |
root |
1.2 |
|
151 |
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if (req->type == REQ_OPEN) |
152 |
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{ |
153 |
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/* convert fd to fh */ |
154 |
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SV *fh; |
155 |
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156 |
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PUTBACK; |
157 |
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call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
158 |
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SPAGAIN; |
159 |
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160 |
root |
1.13 |
fh = SvREFCNT_inc (POPs); |
161 |
root |
1.2 |
|
162 |
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PUSHMARK (SP); |
163 |
root |
1.13 |
XPUSHs (sv_2mortal (fh)); |
164 |
root |
1.2 |
} |
165 |
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166 |
root |
1.8 |
if (SvOK (req->callback)) |
167 |
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{ |
168 |
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PUTBACK; |
169 |
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call_sv (req->callback, G_VOID | G_EVAL); |
170 |
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SPAGAIN; |
171 |
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} |
172 |
root |
1.13 |
|
173 |
root |
1.26 |
LEAVE; |
174 |
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175 |
root |
1.24 |
do_croak = SvTRUE (ERRSV); |
176 |
root |
1.1 |
|
177 |
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errno = errorno; |
178 |
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count++; |
179 |
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} |
180 |
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181 |
root |
1.11 |
prv = req; |
182 |
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req = req->next; |
183 |
root |
1.26 |
free_req (prv); |
184 |
root |
1.11 |
|
185 |
root |
1.24 |
if (do_croak) |
186 |
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croak (0); |
187 |
root |
1.1 |
} |
188 |
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189 |
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return count; |
190 |
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} |
191 |
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192 |
root |
1.4 |
static void *aio_proc(void *arg); |
193 |
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194 |
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static void |
195 |
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start_thread (void) |
196 |
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{ |
197 |
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sigset_t fullsigset, oldsigset; |
198 |
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pthread_t tid; |
199 |
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pthread_attr_t attr; |
200 |
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201 |
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pthread_attr_init (&attr); |
202 |
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pthread_attr_setstacksize (&attr, STACKSIZE); |
203 |
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pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
204 |
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205 |
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sigfillset (&fullsigset); |
206 |
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sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
207 |
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208 |
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if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
209 |
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started++; |
210 |
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211 |
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sigprocmask (SIG_SETMASK, &oldsigset, 0); |
212 |
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} |
213 |
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214 |
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static void |
215 |
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send_req (aio_req req) |
216 |
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{ |
217 |
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nreqs++; |
218 |
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219 |
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pthread_mutex_lock (&reqlock); |
220 |
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221 |
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req->next = 0; |
222 |
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223 |
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if (reqe) |
224 |
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{ |
225 |
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reqe->next = req; |
226 |
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reqe = req; |
227 |
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} |
228 |
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else |
229 |
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reqe = reqs = req; |
230 |
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231 |
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pthread_cond_signal (&reqwait); |
232 |
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pthread_mutex_unlock (&reqlock); |
233 |
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234 |
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while (nreqs > max_outstanding) |
235 |
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{ |
236 |
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poll_wait (); |
237 |
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poll_cb (); |
238 |
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} |
239 |
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} |
240 |
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241 |
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static void |
242 |
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end_thread (void) |
243 |
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{ |
244 |
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aio_req req; |
245 |
root |
1.26 |
Newz (0, req, 1, aio_cb); |
246 |
root |
1.4 |
req->type = REQ_QUIT; |
247 |
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248 |
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send_req (req); |
249 |
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} |
250 |
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251 |
root |
1.22 |
|
252 |
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static void min_parallel (int nthreads) |
253 |
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{ |
254 |
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while (nthreads > started) |
255 |
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start_thread (); |
256 |
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} |
257 |
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258 |
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static void max_parallel (int nthreads) |
259 |
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{ |
260 |
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int cur = started; |
261 |
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while (cur > nthreads) |
262 |
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{ |
263 |
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end_thread (); |
264 |
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cur--; |
265 |
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} |
266 |
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267 |
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while (started > nthreads) |
268 |
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{ |
269 |
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poll_wait (); |
270 |
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poll_cb (); |
271 |
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} |
272 |
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} |
273 |
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|
274 |
root |
1.26 |
static void create_pipe () |
275 |
root |
1.22 |
{ |
276 |
root |
1.26 |
if (pipe (respipe)) |
277 |
|
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croak ("unable to initialize result pipe"); |
278 |
root |
1.22 |
|
279 |
root |
1.26 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
280 |
|
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croak ("cannot set result pipe to nonblocking mode"); |
281 |
root |
1.22 |
|
282 |
root |
1.26 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
283 |
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croak ("cannot set result pipe to nonblocking mode"); |
284 |
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} |
285 |
root |
1.22 |
|
286 |
root |
1.26 |
static void atfork_prepare (void) |
287 |
|
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{ |
288 |
root |
1.25 |
pthread_mutex_lock (&frklock); |
289 |
root |
1.26 |
pthread_mutex_lock (&reqlock); |
290 |
root |
1.22 |
pthread_mutex_lock (&reslock); |
291 |
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} |
292 |
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293 |
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static void atfork_parent (void) |
294 |
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{ |
295 |
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pthread_mutex_unlock (&reslock); |
296 |
root |
1.26 |
pthread_mutex_unlock (&reqlock); |
297 |
root |
1.25 |
pthread_mutex_unlock (&frklock); |
298 |
root |
1.26 |
} |
299 |
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300 |
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static void atfork_child (void) |
301 |
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{ |
302 |
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int restart = started; |
303 |
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started = 0; |
304 |
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305 |
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while (reqs) |
306 |
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{ |
307 |
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free_req (reqs); |
308 |
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reqs = reqs->next; |
309 |
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} |
310 |
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311 |
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reqs = reqe = 0; |
312 |
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313 |
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while (ress) |
314 |
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{ |
315 |
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free_req (ress); |
316 |
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ress = ress->next; |
317 |
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} |
318 |
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319 |
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ress = rese = 0; |
320 |
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321 |
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close (respipe [0]); |
322 |
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close (respipe [1]); |
323 |
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324 |
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create_pipe (); |
325 |
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326 |
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atfork_parent (); |
327 |
root |
1.25 |
|
328 |
root |
1.26 |
min_parallel (restart); |
329 |
root |
1.22 |
} |
330 |
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331 |
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/*****************************************************************************/ |
332 |
root |
1.17 |
/* work around various missing functions */ |
333 |
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|
334 |
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#if !HAVE_PREADWRITE |
335 |
|
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# define pread aio_pread |
336 |
|
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# define pwrite aio_pwrite |
337 |
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|
338 |
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/* |
339 |
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* make our pread/pwrite safe against themselves, but not against |
340 |
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* normal read/write by using a mutex. slows down execution a lot, |
341 |
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* but that's your problem, not mine. |
342 |
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*/ |
343 |
|
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static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
344 |
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|
345 |
|
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static ssize_t |
346 |
|
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pread (int fd, void *buf, size_t count, off_t offset) |
347 |
|
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{ |
348 |
|
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ssize_t res; |
349 |
|
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off_t ooffset; |
350 |
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|
351 |
|
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pthread_mutex_lock (&iolock); |
352 |
|
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ooffset = lseek (fd, 0, SEEK_CUR); |
353 |
|
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lseek (fd, offset, SEEK_SET); |
354 |
|
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res = read (fd, buf, count); |
355 |
|
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lseek (fd, ooffset, SEEK_SET); |
356 |
|
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pthread_mutex_unlock (&iolock); |
357 |
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|
358 |
|
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return res; |
359 |
|
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} |
360 |
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|
361 |
|
|
static ssize_t |
362 |
|
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pwrite (int fd, void *buf, size_t count, off_t offset) |
363 |
|
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{ |
364 |
|
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ssize_t res; |
365 |
|
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off_t ooffset; |
366 |
|
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|
367 |
|
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pthread_mutex_lock (&iolock); |
368 |
|
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ooffset = lseek (fd, 0, SEEK_CUR); |
369 |
|
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lseek (fd, offset, SEEK_SET); |
370 |
|
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res = write (fd, buf, count); |
371 |
|
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lseek (fd, offset, SEEK_SET); |
372 |
|
|
pthread_mutex_unlock (&iolock); |
373 |
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|
374 |
|
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return res; |
375 |
|
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} |
376 |
|
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#endif |
377 |
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|
378 |
|
|
#if !HAVE_FDATASYNC |
379 |
|
|
# define fdatasync fsync |
380 |
|
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#endif |
381 |
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|
382 |
|
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#if !HAVE_READAHEAD |
383 |
|
|
# define readahead aio_readahead |
384 |
|
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|
385 |
|
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static char readahead_buf[4096]; |
386 |
|
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|
387 |
|
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static ssize_t |
388 |
|
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readahead (int fd, off_t offset, size_t count) |
389 |
|
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{ |
390 |
|
|
while (count > 0) |
391 |
|
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{ |
392 |
|
|
size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
393 |
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|
394 |
|
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pread (fd, readahead_buf, len, offset); |
395 |
|
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offset += len; |
396 |
|
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count -= len; |
397 |
|
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} |
398 |
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|
399 |
|
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errno = 0; |
400 |
|
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} |
401 |
|
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#endif |
402 |
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|
403 |
root |
1.22 |
/*****************************************************************************/ |
404 |
|
|
|
405 |
root |
1.1 |
static void * |
406 |
|
|
aio_proc (void *thr_arg) |
407 |
|
|
{ |
408 |
|
|
aio_req req; |
409 |
root |
1.3 |
int type; |
410 |
root |
1.1 |
|
411 |
root |
1.3 |
do |
412 |
root |
1.1 |
{ |
413 |
root |
1.3 |
pthread_mutex_lock (&reqlock); |
414 |
|
|
|
415 |
|
|
for (;;) |
416 |
|
|
{ |
417 |
|
|
req = reqs; |
418 |
|
|
|
419 |
|
|
if (reqs) |
420 |
|
|
{ |
421 |
|
|
reqs = reqs->next; |
422 |
|
|
if (!reqs) reqe = 0; |
423 |
|
|
} |
424 |
|
|
|
425 |
|
|
if (req) |
426 |
|
|
break; |
427 |
|
|
|
428 |
|
|
pthread_cond_wait (&reqwait, &reqlock); |
429 |
|
|
} |
430 |
|
|
|
431 |
|
|
pthread_mutex_unlock (&reqlock); |
432 |
|
|
|
433 |
root |
1.1 |
errno = 0; /* strictly unnecessary */ |
434 |
|
|
|
435 |
root |
1.3 |
type = req->type; |
436 |
|
|
|
437 |
|
|
switch (type) |
438 |
root |
1.1 |
{ |
439 |
root |
1.10 |
case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
440 |
|
|
case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
441 |
root |
1.16 |
|
442 |
root |
1.1 |
case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
443 |
|
|
|
444 |
|
|
case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
445 |
|
|
case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
446 |
|
|
case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
447 |
|
|
|
448 |
|
|
case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
449 |
|
|
case REQ_CLOSE: req->result = close (req->fd); break; |
450 |
|
|
case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
451 |
root |
1.22 |
case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
452 |
|
|
case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
453 |
root |
1.1 |
|
454 |
root |
1.17 |
case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
455 |
root |
1.1 |
case REQ_FSYNC: req->result = fsync (req->fd); break; |
456 |
|
|
|
457 |
|
|
case REQ_QUIT: |
458 |
root |
1.3 |
break; |
459 |
root |
1.1 |
|
460 |
|
|
default: |
461 |
|
|
req->result = ENOSYS; |
462 |
|
|
break; |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
req->errorno = errno; |
466 |
root |
1.3 |
|
467 |
|
|
pthread_mutex_lock (&reslock); |
468 |
|
|
|
469 |
|
|
req->next = 0; |
470 |
|
|
|
471 |
|
|
if (rese) |
472 |
|
|
{ |
473 |
|
|
rese->next = req; |
474 |
|
|
rese = req; |
475 |
|
|
} |
476 |
|
|
else |
477 |
|
|
{ |
478 |
|
|
rese = ress = req; |
479 |
|
|
|
480 |
|
|
/* write a dummy byte to the pipe so fh becomes ready */ |
481 |
|
|
write (respipe [1], &respipe, 1); |
482 |
|
|
} |
483 |
|
|
|
484 |
|
|
pthread_mutex_unlock (&reslock); |
485 |
root |
1.1 |
} |
486 |
root |
1.3 |
while (type != REQ_QUIT); |
487 |
root |
1.1 |
|
488 |
|
|
return 0; |
489 |
|
|
} |
490 |
|
|
|
491 |
root |
1.22 |
#define dREQ \ |
492 |
|
|
aio_req req; \ |
493 |
|
|
\ |
494 |
|
|
if (SvOK (callback) && !SvROK (callback)) \ |
495 |
|
|
croak ("clalback must be undef or of reference type"); \ |
496 |
|
|
\ |
497 |
|
|
Newz (0, req, 1, aio_cb); \ |
498 |
|
|
if (!req) \ |
499 |
|
|
croak ("out of memory during aio_req allocation"); \ |
500 |
|
|
\ |
501 |
|
|
req->callback = SvREFCNT_inc (callback); |
502 |
|
|
|
503 |
root |
1.1 |
MODULE = IO::AIO PACKAGE = IO::AIO |
504 |
|
|
|
505 |
root |
1.8 |
PROTOTYPES: ENABLE |
506 |
|
|
|
507 |
root |
1.1 |
BOOT: |
508 |
|
|
{ |
509 |
root |
1.26 |
create_pipe (); |
510 |
root |
1.22 |
pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
511 |
root |
1.1 |
} |
512 |
|
|
|
513 |
|
|
void |
514 |
|
|
min_parallel(nthreads) |
515 |
|
|
int nthreads |
516 |
|
|
PROTOTYPE: $ |
517 |
|
|
|
518 |
|
|
void |
519 |
|
|
max_parallel(nthreads) |
520 |
|
|
int nthreads |
521 |
|
|
PROTOTYPE: $ |
522 |
|
|
|
523 |
root |
1.4 |
int |
524 |
|
|
max_outstanding(nreqs) |
525 |
|
|
int nreqs |
526 |
|
|
PROTOTYPE: $ |
527 |
|
|
CODE: |
528 |
|
|
RETVAL = max_outstanding; |
529 |
|
|
max_outstanding = nreqs; |
530 |
|
|
|
531 |
root |
1.1 |
void |
532 |
root |
1.8 |
aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
533 |
root |
1.1 |
SV * pathname |
534 |
|
|
int flags |
535 |
|
|
int mode |
536 |
|
|
SV * callback |
537 |
root |
1.8 |
PROTOTYPE: $$$;$ |
538 |
root |
1.1 |
CODE: |
539 |
|
|
{ |
540 |
root |
1.22 |
dREQ; |
541 |
root |
1.1 |
|
542 |
|
|
req->type = REQ_OPEN; |
543 |
|
|
req->data = newSVsv (pathname); |
544 |
root |
1.22 |
req->dataptr = SvPVbyte_nolen (req->data); |
545 |
root |
1.1 |
req->fd = flags; |
546 |
|
|
req->mode = mode; |
547 |
|
|
|
548 |
|
|
send_req (req); |
549 |
|
|
} |
550 |
|
|
|
551 |
|
|
void |
552 |
root |
1.8 |
aio_close(fh,callback=&PL_sv_undef) |
553 |
root |
1.13 |
SV * fh |
554 |
|
|
SV * callback |
555 |
root |
1.8 |
PROTOTYPE: $;$ |
556 |
root |
1.1 |
ALIAS: |
557 |
|
|
aio_close = REQ_CLOSE |
558 |
|
|
aio_fsync = REQ_FSYNC |
559 |
|
|
aio_fdatasync = REQ_FDATASYNC |
560 |
|
|
CODE: |
561 |
|
|
{ |
562 |
root |
1.22 |
dREQ; |
563 |
root |
1.1 |
|
564 |
|
|
req->type = ix; |
565 |
root |
1.13 |
req->fh = newSVsv (fh); |
566 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
567 |
root |
1.1 |
|
568 |
|
|
send_req (req); |
569 |
|
|
} |
570 |
|
|
|
571 |
|
|
void |
572 |
root |
1.8 |
aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
573 |
root |
1.13 |
SV * fh |
574 |
|
|
UV offset |
575 |
|
|
IV length |
576 |
|
|
SV * data |
577 |
|
|
IV dataoffset |
578 |
|
|
SV * callback |
579 |
|
|
ALIAS: |
580 |
|
|
aio_read = REQ_READ |
581 |
|
|
aio_write = REQ_WRITE |
582 |
root |
1.8 |
PROTOTYPE: $$$$$;$ |
583 |
root |
1.1 |
CODE: |
584 |
root |
1.13 |
{ |
585 |
|
|
aio_req req; |
586 |
|
|
STRLEN svlen; |
587 |
root |
1.21 |
char *svptr = SvPVbyte (data, svlen); |
588 |
root |
1.13 |
|
589 |
|
|
SvUPGRADE (data, SVt_PV); |
590 |
|
|
SvPOK_on (data); |
591 |
root |
1.1 |
|
592 |
root |
1.13 |
if (dataoffset < 0) |
593 |
|
|
dataoffset += svlen; |
594 |
|
|
|
595 |
|
|
if (dataoffset < 0 || dataoffset > svlen) |
596 |
|
|
croak ("data offset outside of string"); |
597 |
|
|
|
598 |
|
|
if (ix == REQ_WRITE) |
599 |
|
|
{ |
600 |
|
|
/* write: check length and adjust. */ |
601 |
|
|
if (length < 0 || length + dataoffset > svlen) |
602 |
|
|
length = svlen - dataoffset; |
603 |
|
|
} |
604 |
|
|
else |
605 |
|
|
{ |
606 |
|
|
/* read: grow scalar as necessary */ |
607 |
|
|
svptr = SvGROW (data, length + dataoffset); |
608 |
|
|
} |
609 |
|
|
|
610 |
|
|
if (length < 0) |
611 |
|
|
croak ("length must not be negative"); |
612 |
|
|
|
613 |
root |
1.22 |
{ |
614 |
|
|
dREQ; |
615 |
root |
1.13 |
|
616 |
root |
1.22 |
req->type = ix; |
617 |
|
|
req->fh = newSVsv (fh); |
618 |
|
|
req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
619 |
|
|
: IoOFP (sv_2io (fh))); |
620 |
|
|
req->offset = offset; |
621 |
|
|
req->length = length; |
622 |
|
|
req->data = SvREFCNT_inc (data); |
623 |
|
|
req->dataptr = (char *)svptr + dataoffset; |
624 |
|
|
req->callback = SvREFCNT_inc (callback); |
625 |
root |
1.13 |
|
626 |
root |
1.22 |
send_req (req); |
627 |
|
|
} |
628 |
root |
1.13 |
} |
629 |
root |
1.1 |
|
630 |
|
|
void |
631 |
root |
1.8 |
aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
632 |
root |
1.13 |
SV * fh |
633 |
|
|
UV offset |
634 |
|
|
IV length |
635 |
|
|
SV * callback |
636 |
root |
1.8 |
PROTOTYPE: $$$;$ |
637 |
root |
1.1 |
CODE: |
638 |
|
|
{ |
639 |
root |
1.22 |
dREQ; |
640 |
root |
1.1 |
|
641 |
|
|
req->type = REQ_READAHEAD; |
642 |
root |
1.13 |
req->fh = newSVsv (fh); |
643 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
644 |
root |
1.1 |
req->offset = offset; |
645 |
|
|
req->length = length; |
646 |
|
|
|
647 |
|
|
send_req (req); |
648 |
|
|
} |
649 |
|
|
|
650 |
|
|
void |
651 |
root |
1.8 |
aio_stat(fh_or_path,callback=&PL_sv_undef) |
652 |
root |
1.1 |
SV * fh_or_path |
653 |
|
|
SV * callback |
654 |
|
|
ALIAS: |
655 |
root |
1.8 |
aio_stat = REQ_STAT |
656 |
|
|
aio_lstat = REQ_LSTAT |
657 |
root |
1.1 |
CODE: |
658 |
|
|
{ |
659 |
root |
1.22 |
dREQ; |
660 |
root |
1.1 |
|
661 |
|
|
New (0, req->statdata, 1, Stat_t); |
662 |
|
|
if (!req->statdata) |
663 |
root |
1.22 |
croak ("out of memory during aio_req->statdata allocation (sorry, i just leaked memory, too)"); |
664 |
root |
1.1 |
|
665 |
|
|
if (SvPOK (fh_or_path)) |
666 |
|
|
{ |
667 |
root |
1.8 |
req->type = ix; |
668 |
root |
1.1 |
req->data = newSVsv (fh_or_path); |
669 |
root |
1.22 |
req->dataptr = SvPVbyte_nolen (req->data); |
670 |
root |
1.1 |
} |
671 |
|
|
else |
672 |
|
|
{ |
673 |
|
|
req->type = REQ_FSTAT; |
674 |
root |
1.13 |
req->fh = newSVsv (fh_or_path); |
675 |
root |
1.1 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
676 |
|
|
} |
677 |
|
|
|
678 |
|
|
send_req (req); |
679 |
|
|
} |
680 |
|
|
|
681 |
|
|
void |
682 |
root |
1.8 |
aio_unlink(pathname,callback=&PL_sv_undef) |
683 |
root |
1.1 |
SV * pathname |
684 |
|
|
SV * callback |
685 |
root |
1.22 |
ALIAS: |
686 |
|
|
aio_unlink = REQ_UNLINK |
687 |
|
|
aio_rmdir = REQ_RMDIR |
688 |
root |
1.1 |
CODE: |
689 |
|
|
{ |
690 |
root |
1.22 |
dREQ; |
691 |
root |
1.1 |
|
692 |
root |
1.22 |
req->type = ix; |
693 |
|
|
req->data = newSVsv (pathname); |
694 |
|
|
req->dataptr = SvPVbyte_nolen (req->data); |
695 |
root |
1.1 |
|
696 |
root |
1.22 |
send_req (req); |
697 |
|
|
} |
698 |
|
|
|
699 |
|
|
void |
700 |
|
|
aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
701 |
|
|
SV * oldpath |
702 |
|
|
SV * newpath |
703 |
|
|
SV * callback |
704 |
|
|
CODE: |
705 |
|
|
{ |
706 |
|
|
dREQ; |
707 |
root |
1.1 |
|
708 |
root |
1.22 |
req->type = REQ_SYMLINK; |
709 |
|
|
req->fh = newSVsv (oldpath); |
710 |
|
|
req->data2ptr = SvPVbyte_nolen (req->fh); |
711 |
|
|
req->data = newSVsv (newpath); |
712 |
|
|
req->dataptr = SvPVbyte_nolen (req->data); |
713 |
root |
1.1 |
|
714 |
|
|
send_req (req); |
715 |
|
|
} |
716 |
|
|
|
717 |
root |
1.6 |
void |
718 |
|
|
flush() |
719 |
|
|
PROTOTYPE: |
720 |
|
|
CODE: |
721 |
|
|
while (nreqs) |
722 |
|
|
{ |
723 |
|
|
poll_wait (); |
724 |
|
|
poll_cb (); |
725 |
|
|
} |
726 |
|
|
|
727 |
root |
1.7 |
void |
728 |
|
|
poll() |
729 |
|
|
PROTOTYPE: |
730 |
|
|
CODE: |
731 |
|
|
if (nreqs) |
732 |
|
|
{ |
733 |
|
|
poll_wait (); |
734 |
|
|
poll_cb (); |
735 |
|
|
} |
736 |
|
|
|
737 |
root |
1.1 |
int |
738 |
|
|
poll_fileno() |
739 |
|
|
PROTOTYPE: |
740 |
|
|
CODE: |
741 |
root |
1.3 |
RETVAL = respipe [0]; |
742 |
root |
1.1 |
OUTPUT: |
743 |
|
|
RETVAL |
744 |
|
|
|
745 |
|
|
int |
746 |
|
|
poll_cb(...) |
747 |
|
|
PROTOTYPE: |
748 |
|
|
CODE: |
749 |
root |
1.5 |
RETVAL = poll_cb (); |
750 |
root |
1.1 |
OUTPUT: |
751 |
|
|
RETVAL |
752 |
|
|
|
753 |
|
|
void |
754 |
|
|
poll_wait() |
755 |
|
|
PROTOTYPE: |
756 |
|
|
CODE: |
757 |
root |
1.3 |
if (nreqs) |
758 |
|
|
poll_wait (); |
759 |
root |
1.1 |
|
760 |
|
|
int |
761 |
|
|
nreqs() |
762 |
|
|
PROTOTYPE: |
763 |
|
|
CODE: |
764 |
|
|
RETVAL = nreqs; |
765 |
|
|
OUTPUT: |
766 |
|
|
RETVAL |
767 |
|
|
|