1 |
root |
1.15 |
#include "EXTERN.h" |
2 |
root |
1.1 |
#include "perl.h" |
3 |
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#include "XSUB.h" |
4 |
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5 |
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#include <sys/types.h> |
6 |
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#include <sys/stat.h> |
7 |
root |
1.10 |
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8 |
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1.1 |
#include <unistd.h> |
9 |
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#include <fcntl.h> |
10 |
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#include <signal.h> |
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#include <sched.h> |
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1.10 |
#if __linux |
13 |
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#include <sys/syscall.h> |
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#endif |
15 |
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1.1 |
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16 |
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#include <pthread.h> |
17 |
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18 |
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typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 |
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typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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22 |
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1.4 |
#if __ia64 |
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# define STACKSIZE 65536 |
24 |
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1.1 |
#else |
25 |
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1.4 |
# define STACKSIZE 4096 |
26 |
root |
1.1 |
#endif |
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28 |
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enum { |
29 |
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REQ_QUIT, |
30 |
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REQ_OPEN, REQ_CLOSE, |
31 |
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REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
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REQ_FSYNC, REQ_FDATASYNC, |
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}; |
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36 |
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typedef struct aio_cb { |
37 |
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1.3 |
struct aio_cb *volatile next; |
38 |
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1.1 |
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39 |
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int type; |
40 |
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41 |
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int fd; |
42 |
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off_t offset; |
43 |
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size_t length; |
44 |
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ssize_t result; |
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mode_t mode; /* open */ |
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int errorno; |
47 |
root |
1.13 |
SV *data, *callback, *fh; |
48 |
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1.1 |
void *dataptr; |
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STRLEN dataoffset; |
50 |
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51 |
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Stat_t *statdata; |
52 |
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} aio_cb; |
53 |
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54 |
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typedef aio_cb *aio_req; |
55 |
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56 |
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static int started; |
57 |
root |
1.11 |
static volatile int nreqs; |
58 |
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1.4 |
static int max_outstanding = 1<<30; |
59 |
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1.3 |
static int respipe [2]; |
60 |
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1.1 |
|
61 |
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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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static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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65 |
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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 */ |
67 |
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1.1 |
|
68 |
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static void |
69 |
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poll_wait () |
70 |
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{ |
71 |
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1.11 |
if (nreqs && !ress) |
72 |
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{ |
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fd_set rfd; |
74 |
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FD_ZERO(&rfd); |
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FD_SET(respipe [0], &rfd); |
76 |
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1.3 |
|
77 |
root |
1.11 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
78 |
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} |
79 |
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1.1 |
} |
80 |
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81 |
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static int |
82 |
root |
1.5 |
poll_cb () |
83 |
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1.1 |
{ |
84 |
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dSP; |
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int count = 0; |
86 |
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1.11 |
aio_req req, prv; |
87 |
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88 |
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pthread_mutex_lock (&reslock); |
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90 |
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1.3 |
{ |
91 |
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1.11 |
/* read any signals sent by the worker threads */ |
92 |
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1.3 |
char buf [32]; |
93 |
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while (read (respipe [0], buf, 32) > 0) |
94 |
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; |
95 |
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} |
96 |
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1.1 |
|
97 |
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1.11 |
req = ress; |
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ress = rese = 0; |
99 |
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1.3 |
|
100 |
root |
1.11 |
pthread_mutex_unlock (&reslock); |
101 |
root |
1.3 |
|
102 |
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1.11 |
while (req) |
103 |
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{ |
104 |
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1.1 |
nreqs--; |
105 |
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106 |
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if (req->type == REQ_QUIT) |
107 |
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started--; |
108 |
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else |
109 |
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{ |
110 |
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int errorno = errno; |
111 |
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errno = req->errorno; |
112 |
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113 |
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if (req->type == REQ_READ) |
114 |
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SvCUR_set (req->data, req->dataoffset |
115 |
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+ req->result > 0 ? req->result : 0); |
116 |
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117 |
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if (req->data) |
118 |
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SvREFCNT_dec (req->data); |
119 |
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120 |
root |
1.13 |
if (req->fh) |
121 |
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SvREFCNT_dec (req->fh); |
122 |
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123 |
root |
1.1 |
if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
124 |
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{ |
125 |
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PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
126 |
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PL_laststatval = req->result; |
127 |
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PL_statcache = *(req->statdata); |
128 |
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129 |
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Safefree (req->statdata); |
130 |
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} |
131 |
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132 |
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1.13 |
ENTER; |
133 |
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1.1 |
PUSHMARK (SP); |
134 |
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XPUSHs (sv_2mortal (newSViv (req->result))); |
135 |
root |
1.2 |
|
136 |
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if (req->type == REQ_OPEN) |
137 |
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{ |
138 |
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/* convert fd to fh */ |
139 |
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SV *fh; |
140 |
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141 |
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PUTBACK; |
142 |
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call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
143 |
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SPAGAIN; |
144 |
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145 |
root |
1.13 |
fh = SvREFCNT_inc (POPs); |
146 |
root |
1.2 |
|
147 |
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PUSHMARK (SP); |
148 |
root |
1.13 |
XPUSHs (sv_2mortal (fh)); |
149 |
root |
1.2 |
} |
150 |
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151 |
root |
1.8 |
if (SvOK (req->callback)) |
152 |
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{ |
153 |
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PUTBACK; |
154 |
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call_sv (req->callback, G_VOID | G_EVAL); |
155 |
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SPAGAIN; |
156 |
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} |
157 |
root |
1.13 |
|
158 |
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LEAVE; |
159 |
root |
1.1 |
|
160 |
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if (req->callback) |
161 |
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SvREFCNT_dec (req->callback); |
162 |
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163 |
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errno = errorno; |
164 |
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count++; |
165 |
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} |
166 |
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167 |
root |
1.11 |
prv = req; |
168 |
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req = req->next; |
169 |
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Safefree (prv); |
170 |
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171 |
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/* TODO: croak on errors? */ |
172 |
root |
1.1 |
} |
173 |
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174 |
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return count; |
175 |
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} |
176 |
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177 |
root |
1.4 |
static void *aio_proc(void *arg); |
178 |
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179 |
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static void |
180 |
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start_thread (void) |
181 |
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{ |
182 |
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sigset_t fullsigset, oldsigset; |
183 |
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pthread_t tid; |
184 |
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pthread_attr_t attr; |
185 |
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186 |
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pthread_attr_init (&attr); |
187 |
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pthread_attr_setstacksize (&attr, STACKSIZE); |
188 |
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pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
189 |
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190 |
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sigfillset (&fullsigset); |
191 |
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sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
192 |
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193 |
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if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
194 |
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started++; |
195 |
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196 |
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sigprocmask (SIG_SETMASK, &oldsigset, 0); |
197 |
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} |
198 |
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199 |
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static void |
200 |
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send_req (aio_req req) |
201 |
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{ |
202 |
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nreqs++; |
203 |
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204 |
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pthread_mutex_lock (&reqlock); |
205 |
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206 |
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req->next = 0; |
207 |
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208 |
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if (reqe) |
209 |
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{ |
210 |
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reqe->next = req; |
211 |
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reqe = req; |
212 |
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} |
213 |
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else |
214 |
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reqe = reqs = req; |
215 |
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216 |
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pthread_cond_signal (&reqwait); |
217 |
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pthread_mutex_unlock (&reqlock); |
218 |
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219 |
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while (nreqs > max_outstanding) |
220 |
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{ |
221 |
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poll_wait (); |
222 |
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poll_cb (); |
223 |
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} |
224 |
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} |
225 |
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226 |
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static void |
227 |
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end_thread (void) |
228 |
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{ |
229 |
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aio_req req; |
230 |
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New (0, req, 1, aio_cb); |
231 |
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req->type = REQ_QUIT; |
232 |
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233 |
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send_req (req); |
234 |
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} |
235 |
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236 |
root |
1.1 |
static void * |
237 |
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aio_proc (void *thr_arg) |
238 |
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{ |
239 |
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aio_req req; |
240 |
root |
1.3 |
int type; |
241 |
root |
1.1 |
|
242 |
root |
1.3 |
do |
243 |
root |
1.1 |
{ |
244 |
root |
1.3 |
pthread_mutex_lock (&reqlock); |
245 |
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246 |
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for (;;) |
247 |
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{ |
248 |
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req = reqs; |
249 |
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250 |
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if (reqs) |
251 |
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{ |
252 |
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reqs = reqs->next; |
253 |
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if (!reqs) reqe = 0; |
254 |
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} |
255 |
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256 |
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if (req) |
257 |
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break; |
258 |
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259 |
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pthread_cond_wait (&reqwait, &reqlock); |
260 |
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} |
261 |
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262 |
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pthread_mutex_unlock (&reqlock); |
263 |
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264 |
root |
1.1 |
errno = 0; /* strictly unnecessary */ |
265 |
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266 |
root |
1.3 |
type = req->type; |
267 |
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268 |
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switch (type) |
269 |
root |
1.1 |
{ |
270 |
root |
1.10 |
case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
271 |
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case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
272 |
root |
1.1 |
#if SYS_readahead |
273 |
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case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
274 |
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#else |
275 |
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case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
276 |
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#endif |
277 |
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278 |
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case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
279 |
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case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
280 |
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case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
281 |
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282 |
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case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
283 |
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case REQ_CLOSE: req->result = close (req->fd); break; |
284 |
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case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
285 |
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286 |
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case REQ_FSYNC: req->result = fsync (req->fd); break; |
287 |
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case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
288 |
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289 |
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case REQ_QUIT: |
290 |
root |
1.3 |
break; |
291 |
root |
1.1 |
|
292 |
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default: |
293 |
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req->result = ENOSYS; |
294 |
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break; |
295 |
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} |
296 |
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|
297 |
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req->errorno = errno; |
298 |
root |
1.3 |
|
299 |
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pthread_mutex_lock (&reslock); |
300 |
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301 |
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req->next = 0; |
302 |
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303 |
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if (rese) |
304 |
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{ |
305 |
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rese->next = req; |
306 |
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rese = req; |
307 |
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} |
308 |
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else |
309 |
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{ |
310 |
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rese = ress = req; |
311 |
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|
312 |
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/* write a dummy byte to the pipe so fh becomes ready */ |
313 |
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write (respipe [1], &respipe, 1); |
314 |
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} |
315 |
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316 |
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pthread_mutex_unlock (&reslock); |
317 |
root |
1.1 |
} |
318 |
root |
1.3 |
while (type != REQ_QUIT); |
319 |
root |
1.1 |
|
320 |
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return 0; |
321 |
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} |
322 |
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|
323 |
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MODULE = IO::AIO PACKAGE = IO::AIO |
324 |
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|
325 |
root |
1.8 |
PROTOTYPES: ENABLE |
326 |
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|
327 |
root |
1.1 |
BOOT: |
328 |
|
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{ |
329 |
root |
1.3 |
if (pipe (respipe)) |
330 |
|
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croak ("unable to initialize result pipe"); |
331 |
root |
1.1 |
|
332 |
root |
1.3 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
333 |
root |
1.1 |
croak ("cannot set result pipe to nonblocking mode"); |
334 |
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|
335 |
root |
1.3 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
336 |
root |
1.1 |
croak ("cannot set result pipe to nonblocking mode"); |
337 |
|
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} |
338 |
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|
339 |
|
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void |
340 |
|
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min_parallel(nthreads) |
341 |
|
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int nthreads |
342 |
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PROTOTYPE: $ |
343 |
|
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CODE: |
344 |
|
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while (nthreads > started) |
345 |
|
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start_thread (); |
346 |
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|
347 |
|
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void |
348 |
|
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max_parallel(nthreads) |
349 |
|
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int nthreads |
350 |
|
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PROTOTYPE: $ |
351 |
|
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CODE: |
352 |
|
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{ |
353 |
|
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int cur = started; |
354 |
|
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while (cur > nthreads) |
355 |
|
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{ |
356 |
|
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end_thread (); |
357 |
|
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cur--; |
358 |
|
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} |
359 |
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|
360 |
|
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while (started > nthreads) |
361 |
|
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{ |
362 |
|
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poll_wait (); |
363 |
root |
1.5 |
poll_cb (); |
364 |
root |
1.1 |
} |
365 |
|
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} |
366 |
|
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|
367 |
root |
1.4 |
int |
368 |
|
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max_outstanding(nreqs) |
369 |
|
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int nreqs |
370 |
|
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PROTOTYPE: $ |
371 |
|
|
CODE: |
372 |
|
|
RETVAL = max_outstanding; |
373 |
|
|
max_outstanding = nreqs; |
374 |
|
|
|
375 |
root |
1.1 |
void |
376 |
root |
1.8 |
aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
377 |
root |
1.1 |
SV * pathname |
378 |
|
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int flags |
379 |
|
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int mode |
380 |
|
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SV * callback |
381 |
root |
1.8 |
PROTOTYPE: $$$;$ |
382 |
root |
1.1 |
CODE: |
383 |
|
|
{ |
384 |
|
|
aio_req req; |
385 |
|
|
|
386 |
|
|
Newz (0, req, 1, aio_cb); |
387 |
|
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|
388 |
|
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if (!req) |
389 |
|
|
croak ("out of memory during aio_req allocation"); |
390 |
|
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|
391 |
|
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req->type = REQ_OPEN; |
392 |
|
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req->data = newSVsv (pathname); |
393 |
|
|
req->dataptr = SvPV_nolen (req->data); |
394 |
|
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req->fd = flags; |
395 |
|
|
req->mode = mode; |
396 |
|
|
req->callback = SvREFCNT_inc (callback); |
397 |
|
|
|
398 |
|
|
send_req (req); |
399 |
|
|
} |
400 |
|
|
|
401 |
|
|
void |
402 |
root |
1.8 |
aio_close(fh,callback=&PL_sv_undef) |
403 |
root |
1.13 |
SV * fh |
404 |
|
|
SV * callback |
405 |
root |
1.8 |
PROTOTYPE: $;$ |
406 |
root |
1.1 |
ALIAS: |
407 |
|
|
aio_close = REQ_CLOSE |
408 |
|
|
aio_fsync = REQ_FSYNC |
409 |
|
|
aio_fdatasync = REQ_FDATASYNC |
410 |
|
|
CODE: |
411 |
|
|
{ |
412 |
|
|
aio_req req; |
413 |
|
|
|
414 |
|
|
Newz (0, req, 1, aio_cb); |
415 |
|
|
|
416 |
|
|
if (!req) |
417 |
|
|
croak ("out of memory during aio_req allocation"); |
418 |
|
|
|
419 |
|
|
req->type = ix; |
420 |
root |
1.13 |
req->fh = newSVsv (fh); |
421 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
422 |
root |
1.1 |
req->callback = SvREFCNT_inc (callback); |
423 |
|
|
|
424 |
|
|
send_req (req); |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
void |
428 |
root |
1.8 |
aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
429 |
root |
1.13 |
SV * fh |
430 |
|
|
UV offset |
431 |
|
|
IV length |
432 |
|
|
SV * data |
433 |
|
|
IV dataoffset |
434 |
|
|
SV * callback |
435 |
|
|
ALIAS: |
436 |
|
|
aio_read = REQ_READ |
437 |
|
|
aio_write = REQ_WRITE |
438 |
root |
1.8 |
PROTOTYPE: $$$$$;$ |
439 |
root |
1.1 |
CODE: |
440 |
root |
1.13 |
{ |
441 |
|
|
aio_req req; |
442 |
|
|
STRLEN svlen; |
443 |
|
|
char *svptr = SvPV (data, svlen); |
444 |
|
|
|
445 |
|
|
SvUPGRADE (data, SVt_PV); |
446 |
|
|
SvPOK_on (data); |
447 |
root |
1.1 |
|
448 |
root |
1.13 |
if (dataoffset < 0) |
449 |
|
|
dataoffset += svlen; |
450 |
|
|
|
451 |
|
|
if (dataoffset < 0 || dataoffset > svlen) |
452 |
|
|
croak ("data offset outside of string"); |
453 |
|
|
|
454 |
|
|
if (ix == REQ_WRITE) |
455 |
|
|
{ |
456 |
|
|
/* write: check length and adjust. */ |
457 |
|
|
if (length < 0 || length + dataoffset > svlen) |
458 |
|
|
length = svlen - dataoffset; |
459 |
|
|
} |
460 |
|
|
else |
461 |
|
|
{ |
462 |
|
|
/* read: grow scalar as necessary */ |
463 |
|
|
svptr = SvGROW (data, length + dataoffset); |
464 |
|
|
} |
465 |
|
|
|
466 |
|
|
if (length < 0) |
467 |
|
|
croak ("length must not be negative"); |
468 |
|
|
|
469 |
|
|
Newz (0, req, 1, aio_cb); |
470 |
|
|
|
471 |
|
|
if (!req) |
472 |
|
|
croak ("out of memory during aio_req allocation"); |
473 |
|
|
|
474 |
|
|
req->type = ix; |
475 |
|
|
req->fh = newSVsv (fh); |
476 |
|
|
req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
477 |
|
|
: IoOFP (sv_2io (fh))); |
478 |
|
|
req->offset = offset; |
479 |
|
|
req->length = length; |
480 |
|
|
req->data = SvREFCNT_inc (data); |
481 |
|
|
req->dataptr = (char *)svptr + dataoffset; |
482 |
|
|
req->callback = SvREFCNT_inc (callback); |
483 |
|
|
|
484 |
|
|
send_req (req); |
485 |
|
|
} |
486 |
root |
1.1 |
|
487 |
|
|
void |
488 |
root |
1.8 |
aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
489 |
root |
1.13 |
SV * fh |
490 |
|
|
UV offset |
491 |
|
|
IV length |
492 |
|
|
SV * callback |
493 |
root |
1.8 |
PROTOTYPE: $$$;$ |
494 |
root |
1.1 |
CODE: |
495 |
|
|
{ |
496 |
|
|
aio_req req; |
497 |
|
|
|
498 |
|
|
if (length < 0) |
499 |
|
|
croak ("length must not be negative"); |
500 |
|
|
|
501 |
|
|
Newz (0, req, 1, aio_cb); |
502 |
|
|
|
503 |
|
|
if (!req) |
504 |
|
|
croak ("out of memory during aio_req allocation"); |
505 |
|
|
|
506 |
|
|
req->type = REQ_READAHEAD; |
507 |
root |
1.13 |
req->fh = newSVsv (fh); |
508 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
509 |
root |
1.1 |
req->offset = offset; |
510 |
|
|
req->length = length; |
511 |
|
|
req->callback = SvREFCNT_inc (callback); |
512 |
|
|
|
513 |
|
|
send_req (req); |
514 |
|
|
} |
515 |
|
|
|
516 |
|
|
void |
517 |
root |
1.8 |
aio_stat(fh_or_path,callback=&PL_sv_undef) |
518 |
root |
1.1 |
SV * fh_or_path |
519 |
|
|
SV * callback |
520 |
|
|
ALIAS: |
521 |
root |
1.8 |
aio_stat = REQ_STAT |
522 |
|
|
aio_lstat = REQ_LSTAT |
523 |
root |
1.1 |
CODE: |
524 |
|
|
{ |
525 |
|
|
aio_req req; |
526 |
|
|
|
527 |
|
|
Newz (0, req, 1, aio_cb); |
528 |
|
|
|
529 |
|
|
if (!req) |
530 |
|
|
croak ("out of memory during aio_req allocation"); |
531 |
|
|
|
532 |
|
|
New (0, req->statdata, 1, Stat_t); |
533 |
|
|
|
534 |
|
|
if (!req->statdata) |
535 |
|
|
croak ("out of memory during aio_req->statdata allocation"); |
536 |
|
|
|
537 |
|
|
if (SvPOK (fh_or_path)) |
538 |
|
|
{ |
539 |
root |
1.8 |
req->type = ix; |
540 |
root |
1.1 |
req->data = newSVsv (fh_or_path); |
541 |
|
|
req->dataptr = SvPV_nolen (req->data); |
542 |
|
|
} |
543 |
|
|
else |
544 |
|
|
{ |
545 |
|
|
req->type = REQ_FSTAT; |
546 |
root |
1.13 |
req->fh = newSVsv (fh_or_path); |
547 |
root |
1.1 |
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
548 |
|
|
} |
549 |
|
|
|
550 |
|
|
req->callback = SvREFCNT_inc (callback); |
551 |
|
|
|
552 |
|
|
send_req (req); |
553 |
|
|
} |
554 |
|
|
|
555 |
|
|
void |
556 |
root |
1.8 |
aio_unlink(pathname,callback=&PL_sv_undef) |
557 |
root |
1.1 |
SV * pathname |
558 |
|
|
SV * callback |
559 |
|
|
CODE: |
560 |
|
|
{ |
561 |
|
|
aio_req req; |
562 |
|
|
|
563 |
|
|
Newz (0, req, 1, aio_cb); |
564 |
|
|
|
565 |
|
|
if (!req) |
566 |
|
|
croak ("out of memory during aio_req allocation"); |
567 |
|
|
|
568 |
|
|
req->type = REQ_UNLINK; |
569 |
|
|
req->data = newSVsv (pathname); |
570 |
|
|
req->dataptr = SvPV_nolen (req->data); |
571 |
|
|
req->callback = SvREFCNT_inc (callback); |
572 |
|
|
|
573 |
|
|
send_req (req); |
574 |
|
|
} |
575 |
|
|
|
576 |
root |
1.6 |
void |
577 |
|
|
flush() |
578 |
|
|
PROTOTYPE: |
579 |
|
|
CODE: |
580 |
|
|
while (nreqs) |
581 |
|
|
{ |
582 |
|
|
poll_wait (); |
583 |
|
|
poll_cb (); |
584 |
|
|
} |
585 |
|
|
|
586 |
root |
1.7 |
void |
587 |
|
|
poll() |
588 |
|
|
PROTOTYPE: |
589 |
|
|
CODE: |
590 |
|
|
if (nreqs) |
591 |
|
|
{ |
592 |
|
|
poll_wait (); |
593 |
|
|
poll_cb (); |
594 |
|
|
} |
595 |
|
|
|
596 |
root |
1.1 |
int |
597 |
|
|
poll_fileno() |
598 |
|
|
PROTOTYPE: |
599 |
|
|
CODE: |
600 |
root |
1.3 |
RETVAL = respipe [0]; |
601 |
root |
1.1 |
OUTPUT: |
602 |
|
|
RETVAL |
603 |
|
|
|
604 |
|
|
int |
605 |
|
|
poll_cb(...) |
606 |
|
|
PROTOTYPE: |
607 |
|
|
CODE: |
608 |
root |
1.5 |
RETVAL = poll_cb (); |
609 |
root |
1.1 |
OUTPUT: |
610 |
|
|
RETVAL |
611 |
|
|
|
612 |
|
|
void |
613 |
|
|
poll_wait() |
614 |
|
|
PROTOTYPE: |
615 |
|
|
CODE: |
616 |
root |
1.3 |
if (nreqs) |
617 |
|
|
poll_wait (); |
618 |
root |
1.1 |
|
619 |
|
|
int |
620 |
|
|
nreqs() |
621 |
|
|
PROTOTYPE: |
622 |
|
|
CODE: |
623 |
|
|
RETVAL = nreqs; |
624 |
|
|
OUTPUT: |
625 |
|
|
RETVAL |
626 |
|
|
|