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1.11 |
#define _XOPEN_SOURCE 500 |
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1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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1.10 |
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1.1 |
#include <unistd.h> |
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#include <fcntl.h> |
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#include <signal.h> |
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#include <sched.h> |
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1.10 |
#if __linux |
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#include <sys/syscall.h> |
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#endif |
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1.1 |
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#include <pthread.h> |
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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 ;) */ |
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typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
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1.4 |
#if __ia64 |
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# define STACKSIZE 65536 |
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1.1 |
#else |
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1.4 |
# define STACKSIZE 4096 |
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1.1 |
#endif |
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enum { |
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REQ_QUIT, |
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REQ_OPEN, REQ_CLOSE, |
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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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typedef struct aio_cb { |
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1.3 |
struct aio_cb *volatile next; |
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1.1 |
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41 |
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int type; |
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43 |
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int fd; |
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off_t offset; |
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size_t length; |
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ssize_t result; |
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mode_t mode; /* open */ |
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int errorno; |
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SV *data, *callback; |
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void *dataptr; |
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STRLEN dataoffset; |
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Stat_t *statdata; |
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} aio_cb; |
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typedef aio_cb *aio_req; |
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static int started; |
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1.11 |
static volatile int nreqs; |
60 |
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1.4 |
static int max_outstanding = 1<<30; |
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1.3 |
static int respipe [2]; |
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1.1 |
|
63 |
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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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static volatile aio_req reqs, reqe; /* queue start, queue end */ |
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static volatile aio_req ress, rese; /* queue start, queue end */ |
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1.1 |
|
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static void |
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poll_wait () |
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{ |
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1.11 |
if (nreqs && !ress) |
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{ |
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fd_set rfd; |
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FD_ZERO(&rfd); |
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FD_SET(respipe [0], &rfd); |
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1.3 |
|
79 |
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1.11 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
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} |
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1.1 |
} |
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static int |
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1.5 |
poll_cb () |
85 |
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1.1 |
{ |
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dSP; |
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int count = 0; |
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1.11 |
aio_req req, prv; |
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static int rl;//D |
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//printf ("%d ENTER\n", ++rl);//D |
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93 |
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pthread_mutex_lock (&reslock); |
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95 |
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1.3 |
{ |
96 |
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1.11 |
/* read any signals sent by the worker threads */ |
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1.3 |
char buf [32]; |
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while (read (respipe [0], buf, 32) > 0) |
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; |
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} |
101 |
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1.1 |
|
102 |
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1.11 |
req = ress; |
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ress = rese = 0; |
104 |
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1.3 |
|
105 |
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1.11 |
pthread_mutex_unlock (&reslock); |
106 |
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1.3 |
|
107 |
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1.11 |
while (req) |
108 |
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{ |
109 |
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1.1 |
nreqs--; |
110 |
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1.11 |
//printf ("%d count %d %p->%p\n", rl, count, req, req->next);//D |
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1.1 |
|
112 |
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if (req->type == REQ_QUIT) |
113 |
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started--; |
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else |
115 |
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{ |
116 |
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int errorno = errno; |
117 |
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errno = req->errorno; |
118 |
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119 |
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if (req->type == REQ_READ) |
120 |
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SvCUR_set (req->data, req->dataoffset |
121 |
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+ req->result > 0 ? req->result : 0); |
122 |
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123 |
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if (req->data) |
124 |
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SvREFCNT_dec (req->data); |
125 |
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126 |
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if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
127 |
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{ |
128 |
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PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
129 |
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PL_laststatval = req->result; |
130 |
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PL_statcache = *(req->statdata); |
131 |
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132 |
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Safefree (req->statdata); |
133 |
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} |
134 |
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135 |
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PUSHMARK (SP); |
136 |
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XPUSHs (sv_2mortal (newSViv (req->result))); |
137 |
root |
1.2 |
|
138 |
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if (req->type == REQ_OPEN) |
139 |
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{ |
140 |
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/* convert fd to fh */ |
141 |
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SV *fh; |
142 |
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143 |
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PUTBACK; |
144 |
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call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
145 |
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SPAGAIN; |
146 |
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147 |
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fh = POPs; |
148 |
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149 |
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PUSHMARK (SP); |
150 |
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XPUSHs (fh); |
151 |
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} |
152 |
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153 |
root |
1.8 |
if (SvOK (req->callback)) |
154 |
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{ |
155 |
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PUTBACK; |
156 |
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call_sv (req->callback, G_VOID | G_EVAL); |
157 |
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SPAGAIN; |
158 |
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} |
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 |
root |
1.11 |
//printf ("%d LEAVE %p %p\n", rl--, ress, rese);//D |
175 |
root |
1.1 |
return count; |
176 |
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} |
177 |
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178 |
root |
1.4 |
static void *aio_proc(void *arg); |
179 |
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180 |
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static void |
181 |
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start_thread (void) |
182 |
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{ |
183 |
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sigset_t fullsigset, oldsigset; |
184 |
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pthread_t tid; |
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pthread_attr_t attr; |
186 |
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187 |
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pthread_attr_init (&attr); |
188 |
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pthread_attr_setstacksize (&attr, STACKSIZE); |
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pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
190 |
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191 |
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sigfillset (&fullsigset); |
192 |
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sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
193 |
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194 |
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if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
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started++; |
196 |
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197 |
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sigprocmask (SIG_SETMASK, &oldsigset, 0); |
198 |
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} |
199 |
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200 |
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static void |
201 |
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send_req (aio_req req) |
202 |
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{ |
203 |
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nreqs++; |
204 |
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205 |
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pthread_mutex_lock (&reqlock); |
206 |
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207 |
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req->next = 0; |
208 |
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209 |
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if (reqe) |
210 |
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{ |
211 |
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reqe->next = req; |
212 |
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reqe = req; |
213 |
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} |
214 |
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else |
215 |
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reqe = reqs = req; |
216 |
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217 |
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pthread_cond_signal (&reqwait); |
218 |
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pthread_mutex_unlock (&reqlock); |
219 |
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220 |
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while (nreqs > max_outstanding) |
221 |
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{ |
222 |
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poll_wait (); |
223 |
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poll_cb (); |
224 |
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} |
225 |
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} |
226 |
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227 |
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static void |
228 |
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end_thread (void) |
229 |
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{ |
230 |
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aio_req req; |
231 |
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New (0, req, 1, aio_cb); |
232 |
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req->type = REQ_QUIT; |
233 |
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234 |
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send_req (req); |
235 |
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} |
236 |
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237 |
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static void |
238 |
root |
1.5 |
read_write (int dowrite, int fd, off_t offset, size_t length, |
239 |
root |
1.4 |
SV *data, STRLEN dataoffset, SV *callback) |
240 |
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{ |
241 |
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aio_req req; |
242 |
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STRLEN svlen; |
243 |
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char *svptr = SvPV (data, svlen); |
244 |
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245 |
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SvUPGRADE (data, SVt_PV); |
246 |
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SvPOK_on (data); |
247 |
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248 |
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if (dataoffset < 0) |
249 |
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dataoffset += svlen; |
250 |
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251 |
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if (dataoffset < 0 || dataoffset > svlen) |
252 |
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croak ("data offset outside of string"); |
253 |
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254 |
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if (dowrite) |
255 |
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{ |
256 |
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/* write: check length and adjust. */ |
257 |
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if (length < 0 || length + dataoffset > svlen) |
258 |
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length = svlen - dataoffset; |
259 |
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} |
260 |
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else |
261 |
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{ |
262 |
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/* read: grow scalar as necessary */ |
263 |
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svptr = SvGROW (data, length + dataoffset); |
264 |
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} |
265 |
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266 |
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if (length < 0) |
267 |
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croak ("length must not be negative"); |
268 |
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269 |
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Newz (0, req, 1, aio_cb); |
270 |
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271 |
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if (!req) |
272 |
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croak ("out of memory during aio_req allocation"); |
273 |
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274 |
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req->type = dowrite ? REQ_WRITE : REQ_READ; |
275 |
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req->fd = fd; |
276 |
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req->offset = offset; |
277 |
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req->length = length; |
278 |
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req->data = SvREFCNT_inc (data); |
279 |
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req->dataptr = (char *)svptr + dataoffset; |
280 |
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req->callback = SvREFCNT_inc (callback); |
281 |
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282 |
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send_req (req); |
283 |
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} |
284 |
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285 |
root |
1.1 |
static void * |
286 |
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aio_proc (void *thr_arg) |
287 |
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{ |
288 |
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aio_req req; |
289 |
root |
1.3 |
int type; |
290 |
root |
1.1 |
|
291 |
root |
1.3 |
do |
292 |
root |
1.1 |
{ |
293 |
root |
1.3 |
pthread_mutex_lock (&reqlock); |
294 |
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295 |
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for (;;) |
296 |
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{ |
297 |
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req = reqs; |
298 |
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299 |
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if (reqs) |
300 |
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{ |
301 |
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reqs = reqs->next; |
302 |
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if (!reqs) reqe = 0; |
303 |
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} |
304 |
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305 |
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if (req) |
306 |
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break; |
307 |
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308 |
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pthread_cond_wait (&reqwait, &reqlock); |
309 |
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} |
310 |
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311 |
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pthread_mutex_unlock (&reqlock); |
312 |
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313 |
root |
1.1 |
errno = 0; /* strictly unnecessary */ |
314 |
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315 |
root |
1.3 |
type = req->type; |
316 |
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317 |
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switch (type) |
318 |
root |
1.1 |
{ |
319 |
root |
1.10 |
case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
320 |
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case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
321 |
root |
1.1 |
#if SYS_readahead |
322 |
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case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
323 |
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#else |
324 |
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case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
325 |
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#endif |
326 |
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327 |
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case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
328 |
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case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
329 |
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case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
330 |
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331 |
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case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
332 |
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case REQ_CLOSE: req->result = close (req->fd); break; |
333 |
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case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
334 |
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335 |
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case REQ_FSYNC: req->result = fsync (req->fd); break; |
336 |
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case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
337 |
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338 |
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case REQ_QUIT: |
339 |
root |
1.3 |
break; |
340 |
root |
1.1 |
|
341 |
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default: |
342 |
|
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req->result = ENOSYS; |
343 |
|
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break; |
344 |
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} |
345 |
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|
346 |
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req->errorno = errno; |
347 |
root |
1.3 |
|
348 |
|
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pthread_mutex_lock (&reslock); |
349 |
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|
350 |
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req->next = 0; |
351 |
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352 |
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if (rese) |
353 |
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{ |
354 |
|
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rese->next = req; |
355 |
|
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rese = req; |
356 |
|
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} |
357 |
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else |
358 |
|
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{ |
359 |
|
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rese = ress = req; |
360 |
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|
361 |
|
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/* write a dummy byte to the pipe so fh becomes ready */ |
362 |
|
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write (respipe [1], &respipe, 1); |
363 |
|
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} |
364 |
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|
365 |
|
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pthread_mutex_unlock (&reslock); |
366 |
root |
1.1 |
} |
367 |
root |
1.3 |
while (type != REQ_QUIT); |
368 |
root |
1.1 |
|
369 |
|
|
return 0; |
370 |
|
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} |
371 |
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|
372 |
|
|
MODULE = IO::AIO PACKAGE = IO::AIO |
373 |
|
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|
374 |
root |
1.8 |
PROTOTYPES: ENABLE |
375 |
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|
376 |
root |
1.1 |
BOOT: |
377 |
|
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{ |
378 |
root |
1.3 |
if (pipe (respipe)) |
379 |
|
|
croak ("unable to initialize result pipe"); |
380 |
root |
1.1 |
|
381 |
root |
1.3 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
382 |
root |
1.1 |
croak ("cannot set result pipe to nonblocking mode"); |
383 |
|
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|
384 |
root |
1.3 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
385 |
root |
1.1 |
croak ("cannot set result pipe to nonblocking mode"); |
386 |
|
|
} |
387 |
|
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|
388 |
|
|
void |
389 |
|
|
min_parallel(nthreads) |
390 |
|
|
int nthreads |
391 |
|
|
PROTOTYPE: $ |
392 |
|
|
CODE: |
393 |
|
|
while (nthreads > started) |
394 |
|
|
start_thread (); |
395 |
|
|
|
396 |
|
|
void |
397 |
|
|
max_parallel(nthreads) |
398 |
|
|
int nthreads |
399 |
|
|
PROTOTYPE: $ |
400 |
|
|
CODE: |
401 |
|
|
{ |
402 |
|
|
int cur = started; |
403 |
|
|
while (cur > nthreads) |
404 |
|
|
{ |
405 |
|
|
end_thread (); |
406 |
|
|
cur--; |
407 |
|
|
} |
408 |
|
|
|
409 |
|
|
while (started > nthreads) |
410 |
|
|
{ |
411 |
|
|
poll_wait (); |
412 |
root |
1.5 |
poll_cb (); |
413 |
root |
1.1 |
} |
414 |
|
|
} |
415 |
|
|
|
416 |
root |
1.4 |
int |
417 |
|
|
max_outstanding(nreqs) |
418 |
|
|
int nreqs |
419 |
|
|
PROTOTYPE: $ |
420 |
|
|
CODE: |
421 |
|
|
RETVAL = max_outstanding; |
422 |
|
|
max_outstanding = nreqs; |
423 |
|
|
|
424 |
root |
1.1 |
void |
425 |
root |
1.8 |
aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
426 |
root |
1.1 |
SV * pathname |
427 |
|
|
int flags |
428 |
|
|
int mode |
429 |
|
|
SV * callback |
430 |
root |
1.8 |
PROTOTYPE: $$$;$ |
431 |
root |
1.1 |
CODE: |
432 |
|
|
{ |
433 |
|
|
aio_req req; |
434 |
|
|
|
435 |
|
|
Newz (0, req, 1, aio_cb); |
436 |
|
|
|
437 |
|
|
if (!req) |
438 |
|
|
croak ("out of memory during aio_req allocation"); |
439 |
|
|
|
440 |
|
|
req->type = REQ_OPEN; |
441 |
|
|
req->data = newSVsv (pathname); |
442 |
|
|
req->dataptr = SvPV_nolen (req->data); |
443 |
|
|
req->fd = flags; |
444 |
|
|
req->mode = mode; |
445 |
|
|
req->callback = SvREFCNT_inc (callback); |
446 |
|
|
|
447 |
|
|
send_req (req); |
448 |
|
|
} |
449 |
|
|
|
450 |
|
|
void |
451 |
root |
1.8 |
aio_close(fh,callback=&PL_sv_undef) |
452 |
root |
1.1 |
InputStream fh |
453 |
|
|
SV * callback |
454 |
root |
1.8 |
PROTOTYPE: $;$ |
455 |
root |
1.1 |
ALIAS: |
456 |
|
|
aio_close = REQ_CLOSE |
457 |
|
|
aio_fsync = REQ_FSYNC |
458 |
|
|
aio_fdatasync = REQ_FDATASYNC |
459 |
|
|
CODE: |
460 |
|
|
{ |
461 |
|
|
aio_req req; |
462 |
|
|
|
463 |
|
|
Newz (0, req, 1, aio_cb); |
464 |
|
|
|
465 |
|
|
if (!req) |
466 |
|
|
croak ("out of memory during aio_req allocation"); |
467 |
|
|
|
468 |
|
|
req->type = ix; |
469 |
|
|
req->fd = PerlIO_fileno (fh); |
470 |
|
|
req->callback = SvREFCNT_inc (callback); |
471 |
|
|
|
472 |
|
|
send_req (req); |
473 |
|
|
} |
474 |
|
|
|
475 |
|
|
void |
476 |
root |
1.8 |
aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
477 |
root |
1.1 |
InputStream fh |
478 |
|
|
UV offset |
479 |
|
|
IV length |
480 |
|
|
SV * data |
481 |
|
|
IV dataoffset |
482 |
|
|
SV * callback |
483 |
root |
1.8 |
PROTOTYPE: $$$$$;$ |
484 |
root |
1.1 |
CODE: |
485 |
root |
1.5 |
read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
486 |
root |
1.1 |
|
487 |
|
|
void |
488 |
root |
1.8 |
aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
489 |
root |
1.1 |
OutputStream fh |
490 |
|
|
UV offset |
491 |
|
|
IV length |
492 |
|
|
SV * data |
493 |
|
|
IV dataoffset |
494 |
|
|
SV * callback |
495 |
root |
1.8 |
PROTOTYPE: $$$$$;$ |
496 |
root |
1.1 |
CODE: |
497 |
root |
1.5 |
read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
498 |
root |
1.1 |
|
499 |
|
|
void |
500 |
root |
1.8 |
aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
501 |
root |
1.1 |
InputStream fh |
502 |
|
|
UV offset |
503 |
|
|
IV length |
504 |
|
|
SV * callback |
505 |
root |
1.8 |
PROTOTYPE: $$$;$ |
506 |
root |
1.1 |
CODE: |
507 |
|
|
{ |
508 |
|
|
aio_req req; |
509 |
|
|
|
510 |
|
|
if (length < 0) |
511 |
|
|
croak ("length must not be negative"); |
512 |
|
|
|
513 |
|
|
Newz (0, req, 1, aio_cb); |
514 |
|
|
|
515 |
|
|
if (!req) |
516 |
|
|
croak ("out of memory during aio_req allocation"); |
517 |
|
|
|
518 |
|
|
req->type = REQ_READAHEAD; |
519 |
|
|
req->fd = PerlIO_fileno (fh); |
520 |
|
|
req->offset = offset; |
521 |
|
|
req->length = length; |
522 |
|
|
req->callback = SvREFCNT_inc (callback); |
523 |
|
|
|
524 |
|
|
send_req (req); |
525 |
|
|
} |
526 |
|
|
|
527 |
|
|
void |
528 |
root |
1.8 |
aio_stat(fh_or_path,callback=&PL_sv_undef) |
529 |
root |
1.1 |
SV * fh_or_path |
530 |
|
|
SV * callback |
531 |
|
|
ALIAS: |
532 |
root |
1.8 |
aio_stat = REQ_STAT |
533 |
|
|
aio_lstat = REQ_LSTAT |
534 |
root |
1.1 |
CODE: |
535 |
|
|
{ |
536 |
|
|
aio_req req; |
537 |
|
|
|
538 |
|
|
Newz (0, req, 1, aio_cb); |
539 |
|
|
|
540 |
|
|
if (!req) |
541 |
|
|
croak ("out of memory during aio_req allocation"); |
542 |
|
|
|
543 |
|
|
New (0, req->statdata, 1, Stat_t); |
544 |
|
|
|
545 |
|
|
if (!req->statdata) |
546 |
|
|
croak ("out of memory during aio_req->statdata allocation"); |
547 |
|
|
|
548 |
|
|
if (SvPOK (fh_or_path)) |
549 |
|
|
{ |
550 |
root |
1.8 |
req->type = ix; |
551 |
root |
1.1 |
req->data = newSVsv (fh_or_path); |
552 |
|
|
req->dataptr = SvPV_nolen (req->data); |
553 |
|
|
} |
554 |
|
|
else |
555 |
|
|
{ |
556 |
|
|
req->type = REQ_FSTAT; |
557 |
|
|
req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
558 |
|
|
} |
559 |
|
|
|
560 |
|
|
req->callback = SvREFCNT_inc (callback); |
561 |
|
|
|
562 |
|
|
send_req (req); |
563 |
|
|
} |
564 |
|
|
|
565 |
|
|
void |
566 |
root |
1.8 |
aio_unlink(pathname,callback=&PL_sv_undef) |
567 |
root |
1.1 |
SV * pathname |
568 |
|
|
SV * callback |
569 |
|
|
CODE: |
570 |
|
|
{ |
571 |
|
|
aio_req req; |
572 |
|
|
|
573 |
|
|
Newz (0, req, 1, aio_cb); |
574 |
|
|
|
575 |
|
|
if (!req) |
576 |
|
|
croak ("out of memory during aio_req allocation"); |
577 |
|
|
|
578 |
|
|
req->type = REQ_UNLINK; |
579 |
|
|
req->data = newSVsv (pathname); |
580 |
|
|
req->dataptr = SvPV_nolen (req->data); |
581 |
|
|
req->callback = SvREFCNT_inc (callback); |
582 |
|
|
|
583 |
|
|
send_req (req); |
584 |
|
|
} |
585 |
|
|
|
586 |
root |
1.6 |
void |
587 |
|
|
flush() |
588 |
|
|
PROTOTYPE: |
589 |
|
|
CODE: |
590 |
|
|
while (nreqs) |
591 |
|
|
{ |
592 |
|
|
poll_wait (); |
593 |
|
|
poll_cb (); |
594 |
|
|
} |
595 |
|
|
|
596 |
root |
1.7 |
void |
597 |
|
|
poll() |
598 |
|
|
PROTOTYPE: |
599 |
|
|
CODE: |
600 |
|
|
if (nreqs) |
601 |
|
|
{ |
602 |
|
|
poll_wait (); |
603 |
|
|
poll_cb (); |
604 |
|
|
} |
605 |
|
|
|
606 |
root |
1.1 |
int |
607 |
|
|
poll_fileno() |
608 |
|
|
PROTOTYPE: |
609 |
|
|
CODE: |
610 |
root |
1.3 |
RETVAL = respipe [0]; |
611 |
root |
1.1 |
OUTPUT: |
612 |
|
|
RETVAL |
613 |
|
|
|
614 |
|
|
int |
615 |
|
|
poll_cb(...) |
616 |
|
|
PROTOTYPE: |
617 |
|
|
CODE: |
618 |
root |
1.5 |
RETVAL = poll_cb (); |
619 |
root |
1.1 |
OUTPUT: |
620 |
|
|
RETVAL |
621 |
|
|
|
622 |
|
|
void |
623 |
|
|
poll_wait() |
624 |
|
|
PROTOTYPE: |
625 |
|
|
CODE: |
626 |
root |
1.3 |
if (nreqs) |
627 |
|
|
poll_wait (); |
628 |
root |
1.1 |
|
629 |
|
|
int |
630 |
|
|
nreqs() |
631 |
|
|
PROTOTYPE: |
632 |
|
|
CODE: |
633 |
|
|
RETVAL = nreqs; |
634 |
|
|
OUTPUT: |
635 |
|
|
RETVAL |
636 |
|
|
|