int Ram_read(Ram * ram,size_t iter)
{
if(iter>=ram->memsize)
{
// avoid SIGSEGV
iter=ram->memsize-1;
}
if(iter < ram->regs_count)
{
return Register_read(ram->regs[iter]);
}
iter-=ram->regs_count;
return ram->mem[iter];
}
/**
* Commits the amount given by need to the buffer, moving the internal
* counters around so that the next read starts after the need point.
* You use this after you're done working with the data and want to
* do the next read.
*/
int IOBuf_read_commit(IOBuf *buf, int need)
{
buf->avail -= need;
assert(buf->avail >= 0 && "Buffer commit reduced avail to < 0.");
check(Register_read(buf->fd, need) != -1, "Failed to record read, must have died.");
buf->mark = 0;
if(buf->avail == 0) {
// if there's nothing available then just start at the beginning
buf->cur = 0;
} else {
buf->cur += need;
}
return 0;
error:
return -1;
}
