LXR linux/tools/perf/trace/beauty/waitid

   1#include <sys/types.h>
   2#include <sys/wait.h>
   3
   4static size_t syscall_arg__scnprintf_waitid_options(char *bf, size_t size,
   5                                                    struct syscall_arg *arg)
   6{
   7        int printed = 0, options = arg->val;
   8
   9#define P_OPTION(n) \
  10        if (options & W##n) { \
  11                printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
  12                options &= ~W##n; \
  13        }
  14
  15        P_OPTION(NOHANG);
  16        P_OPTION(UNTRACED);
  17        P_OPTION(CONTINUED);
  18#undef P_OPTION
  19
  20        if (options)
  21                printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", options);
  22
  23        return printed;
  24}
  25
  26#define SCA_WAITID_OPTIONS syscall_arg__scnprintf_waitid_options
  27