static void
srvcancelreqs(SrvFile *sf)
{
Pending *w, *ws;
Sys_Rread rreply;
Sys_Rwrite wreply;
acquire();
ws = &sf->waitlist;
while((w = ws->next) != ws){
delwaiting(w);
if(waserror() == 0){
if(w->rc != nil){
rreply.t0 = H;
rreply.t1 = c2string(Ehungup, strlen(Ehungup));
csend(w->rc, &rreply);
}
if(w->wc != nil){
wreply.t0 = 0;
wreply.t1 = c2string(Ehungup, strlen(Ehungup));
csend(w->wc, &wreply);
}
poperror();
}
}
release();
}
int md_wrap_write(void *buf, int bytes, int dest, int type, int *flag)
/*******************************************************************************
Machine dependent wrapped message-sending communication routine for the
Intel. This routine is exactly the same as md_write.
Author: Scott A. Hutchinson, SNL, 9221
=======
Return code: int
============
Parameter list:
===============
buf: Beginning address of data to be sent.
bytes: Length of message in bytes.
dest: Destination processor number.
type: Message type
flag:
*******************************************************************************/
{
int Me;
long lflag;
Me = mynode();
lflag = type * CUBESIZ + Me;
/* dest=0xffff broadcasts to the current process on all of the nodes. */
if (dest == 0xffff)
csend(lflag, buf,(long) bytes, -1L, 0L); /* to everyone */
else
csend(type, buf, (long) bytes, (long) dest, 0L);
return 0;
} /* md_wrap_write */
void unreduce (double *x, int n)
{
int nprocs = numnodes(),
pid = mynode(),
k;
ROOTONLY
for (k = 1; k < nprocs; k++)
csend (MSGTAG + k, x, n*sizeof(double), k, 0);
else
// careful here, any csend might clear player[n]!
void pflush(void)
{
int n,ilen,olen,csize,ret,olow,ohigh;
unsigned char obuf[OBUFSIZE];
unsigned long long prof;
for (n=1; n<MAXPLAYER; n++) {
if (!player[n]) continue;
ilen=player[n]->tptr;
if (ilen>16) {
player[n]->zs.next_in=player[n]->tbuf;
player[n]->zs.avail_in=ilen;
player[n]->zs.next_out=obuf;
player[n]->zs.avail_out=OBUFSIZE;
prof=prof_start(12); ret=deflate(&player[n]->zs,Z_SYNC_FLUSH); prof_stop(12,prof);
if (ret!=Z_OK) {
elog("compression failure #1, kicking player %d",n);
kick_player(n,NULL);
continue;
}
if (player[n]->zs.avail_in) {
elog("compression failure #2, kicking player %d",n);
kick_player(n,NULL);
continue;
}
csize=OBUFSIZE-player[n]->zs.avail_out;
olen=(csize);
if (olen>63) {
ohigh=(olen>>8)|0x80;
olow=olen&255;
csend(n,(void*)(&ohigh),1);
csend(n,(void*)(&olow),1);
} else {
int md_write(char *buf, int bytes, int dest, int type, int *flag)
{
/*
extern int Me;
*/
int Me;
long lflag;
Me = mynode();
lflag = type * CUBESIZ + Me;
/* dest=0xffff broadcasts to the current process on all of the nodes. */
if (dest == 0xffff)
csend(lflag, buf,(long) bytes, -1L, 0L); /* to everyone */
else
csend(type, buf, (long) bytes, (long) dest, 0L);
return 0;
} /* md_write */
void
CQuit (char *text)
{
static int n;
if (quited)
return;
quited = 1;
PUTHEAD (SQUIT);
strcpy ((char *) (buffer + HEADSIZE), text);
printf ("Terminating game.\nReason:%s\n", text);
for (n = 0; n < 5; n++)
{ /*repeat quiting messages to make sure that
all clients received it */
csend (buffer, strlen (text) + HEADSIZE + 1);
csendbuffer ();
}
SocketClose (sock);
quited = 1;
/*exit(0); */
uninitialize ();
exit (0);
}
static long
srvwrite(Chan *c, void *va, long count, vlong offset)
{
long l;
Heap * volatile h;
SrvFile *sp;
Channel *wc;
Channel *wr;
Pending wait;
Sys_Rwrite * volatile w;
Sys_FileIO_write req;
if(c->qid.type & QTDIR)
error(Eperm);
acquire();
if(waserror()){
release();
nexterror();
}
sp = c->aux;
wr = sp->write;
if(wr == H)
error(Ehungup);
wc = cnewc(dev.Rwrite, movtmp, 1);
ptradd(D2H(wc));
if(waserror()){
ptrdel(D2H(wc));
destroy(wc);
nexterror();
}
req.t0 = offset;
req.t1 = mem2array(va, count);
req.t2 = c->fid;
req.t3 = wc;
ptradd(D2H(req.t1));
if(waserror()){
ptrdel(D2H(req.t1));
destroy(req.t1);
nexterror();
}
csend(wr, &req);
poperror();
ptrdel(D2H(req.t1));
destroy(req.t1);
h = heap(dev.Rwrite);
w = H2D(Sys_Rwrite *, h);
ptradd(h);
if(waserror()){
ptrdel(h);
destroy(w);
nexterror();
}
wait.fid = c->fid;
wait.rc = nil;
wait.wc = wc;
addwaiting(sp, &wait);
if(waserror()){
delwaiting(&wait);
nexterror();
}
crecv(wc, w);
poperror();
delwaiting(&wait);
if(w->t1 != H)
error(string2c(w->t1));
poperror();
ptrdel(h);
l = w->t0;
destroy(w);
poperror();
ptrdel(D2H(wc));
destroy(wc);
poperror();
release();
if(l < 0)
l = 0;
return l;
}
static long
srvread(Chan *c, void *va, long count, vlong offset)
{
int l;
Heap * volatile h;
Array *a;
SrvFile *sp;
Channel *rc;
Channel *rd;
Pending wait;
Sys_Rread * volatile r;
Sys_FileIO_read req;
if(c->qid.type & QTDIR){
qlock(&dev.l);
if(waserror()){
qunlock(&dev.l);
nexterror();
}
l = devdirread(c, va, count, 0, 0, srvgen);
poperror();
qunlock(&dev.l);
return l;
}
sp = c->aux;
acquire();
if(waserror()){
release();
nexterror();
}
rd = sp->read;
if(rd == H)
error(Ehungup);
rc = cnewc(dev.Rread, movtmp, 1);
ptradd(D2H(rc));
if(waserror()){
ptrdel(D2H(rc));
destroy(rc);
nexterror();
}
req.t0 = offset;
req.t1 = count;
req.t2 = c->fid;
req.t3 = rc;
csend(rd, &req);
h = heap(dev.Rread);
r = H2D(Sys_Rread *, h);
ptradd(h);
if(waserror()){
ptrdel(h);
destroy(r);
nexterror();
}
wait.fid = c->fid;
wait.rc = rc;
wait.wc = nil;
addwaiting(sp, &wait);
if(waserror()){
delwaiting(&wait);
nexterror();
}
crecv(rc, r);
poperror();
delwaiting(&wait);
if(r->t1 != H)
error(string2c(r->t1));
a = r->t0;
l = 0;
if(a != H){
l = a->len;
if(l > count)
l = count;
memmove(va, a->data, l);
}
poperror();
ptrdel(h);
destroy(r);
poperror();
ptrdel(D2H(rc));
destroy(rc);
poperror();
release();
return l;
}