granicus.if.org Git - strace/blob - affinity.c

   1 #include "defs.h"
   2
   3 static void
   4 print_affinitylist(struct tcb *tcp, const unsigned long addr, const unsigned int len)
   5 {
   6         unsigned long w;
   7         const unsigned int size = len * sizeof(w);
   8         const unsigned long end = addr + size;
   9         unsigned long cur, abbrev_end;
  10
  11         if (!verbose(tcp) || (exiting(tcp) && syserror(tcp)) ||
  12             !addr || !len || size / sizeof(w) != len || end < addr) {
  13                 printaddr(addr);
  14                 return;
  15         }
  16
  17         if (abbrev(tcp)) {
  18                 abbrev_end = addr + max_strlen *  sizeof(w);
  19                 if (abbrev_end < addr)
  20                         abbrev_end = end;
  21         } else {
  22                 abbrev_end = end;
  23         }
  24
  25         tprints("[");
  26         for (cur = addr; cur < end; cur += sizeof(w)) {
  27                 if (cur > addr)
  28                         tprints(", ");
  29                 if (cur >= abbrev_end) {
  30                         tprints("...");
  31                         break;
  32                 }
  33                 if (umove_or_printaddr(tcp, cur, &w))
  34                         break;
  35                 tprintf("%lx", w);
  36         }
  37         tprints("]");
  38 }
  39
  40 SYS_FUNC(sched_setaffinity)
  41 {
  42         tprintf("%ld, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
  43         print_affinitylist(tcp, tcp->u_arg[2], tcp->u_arg[1]);
  44
  45         return RVAL_DECODED;
  46 }
  47
  48 SYS_FUNC(sched_getaffinity)
  49 {
  50         if (entering(tcp)) {
  51                 tprintf("%ld, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
  52         } else {
  53                 print_affinitylist(tcp, tcp->u_arg[2], tcp->u_rval);
  54         }
  55         return 0;
  56 }