In article <1d5c01bf5c42$1409d990$[EMAIL PROTECTED]> you wrote:
> You've got that backwards - fork() and vfork() can easily be implemented in
> terms of rfork() [in fact, I believe all three are implemented in terms of
> fork1() in the kernel]. rfork(RFMEM) means that the processes share all
> memory - current AND FUTURE. You could use minherit() before fork() to
> share current memory, but not future memory.
BTW, concerning rfork(RFMEM). Could somebody explain me, why the
following simple program is coredumping:
#include <stdio.h>
#include <unistd.h>
volatile int data=0;
int
main()
{
volatile int pid=0;
int status;
pid=rfork(RFPROC|RFMEM|RFCFDG);
if(pid==-1) {
perror("rfork");
exit(-1);
}
if(pid!=0) {
wait(&status);
printf("Data is %d\n",data);
} else
data=1;
}
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