On Apr 14, 2009, at 4:57 PM, Xiangyang Ye wrote:
Hi All,
I tried my best to figure out how to deal with the freezing R
console but
with no luck. I followed the instructions of calling R_ProcessEvents()
regularly but still couldn't work it out (the callings were removed
from the
below C code).
It's not a hang - it's a crash because of a bug in your code. Look at
the last loop - I suspect you meant j<*n and not j<*m otherwise you'll
be corrupting memory.
FWIW if you want to make a GUI responsive, you should be calling
R_CheckUserInterrupt() and not R_ProcessEveents() because the latter
is not available on all platforms.
Cheers,
Simon
I am using R-2.8.1 on Windows XP service pack 3. The Rtools is
version 2.9.
I have the following C code:
void rx(int *n, int *m, int *rxmax,int *rxdate, int *refills,int
*rxs) {
int i,j,k, total;
int cap[*n][*m];
int rx[*n* *rxmax][*n];
for (i=0;i<*n;i++)
for (j=0;j<*m;j++)
cap[i][j]=0;
for (i=0;i<*n* *rxmax;i++) {
rx[i][0]=*(rxdate+i);
rx[i][1]=*(refills+i);
}
for (i=0;i<*n;i=i+1)
for (j=*rxmax *i;j<(i+1) * *rxmax-1;j++)
if (rx[j][0] > 0)
for (k = rx[j][0]; k < rx[j][0] + rx[j][1]; k++){
if (k<*m)
cap[i][k]=1; }
for (j=0;j<*m;j++)
for (i=0,total=0;i<*m;i++) {
total= total+cap[j][i];
rxs[j]=total;
}
}
And the following R code:
dyn.load("c:/temp/rxc.dll")
rx=matrix(c(1,5,11,5,21,5,0,0,
1,10,21,10,0,0,0,0),nrow=8, byrow=T);
n=2
m=31
x=c(1:n)
rxmax= dim(rx)[[1]]/n
xx <- .C("rx",n=as.integer(n),m=as.integer(m),rxmax=as.integer(rxmax),
rxdate = as.integer(rx[,1]),
refills = as.integer(rx[,2]),rxs=as.integer(x))
xx$rxs
After I created the .dll file, I was able to load it into R and got
the
result that I expected. But if I re-run the code for several times,
the R
console will freeze.
Thanks in advance.
Xiangyang
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