- addr=os_trunc_to_page(addr);
- len=os_round_up_size_to_page(len);
- old_len=os_round_up_size_to_page(old_len);
-
- if (addr==NULL)
- return os_allocate(len);
- else{
- long len_diff=len-old_len;
-
- if (len_diff<0)
- os_invalidate(addr+len,-len_diff);
- else{
- if (len_diff!=0) {
- os_vm_address_t new=os_allocate(len);
-
- if(new!=NULL){
- bcopy(addr,new,old_len);
- os_invalidate(addr,old_len);
- }
-
- addr=new;
- }
- }
- return addr;
- }
+ FSHOW((stderr, "%s: os_sem_wait(%p) ...\n", what, sem));
+ while (-1 == sem_wait(sem))
+ if (EINTR!=errno)
+ lose("%s: os_sem_wait(%p): %s", what, sem, strerror(errno));
+ FSHOW((stderr, "%s: os_sem_wait(%p) => ok\n", what, sem));