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Linux/tools/perf/trace/beauty/waitid_options.c

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  1 // SPDX-License-Identifier: LGPL-2.1
  2 #include <sys/types.h>
  3 #include <sys/wait.h>
  4 
  5 static size_t syscall_arg__scnprintf_waitid_options(char *bf, size_t size,
  6                                                     struct syscall_arg *arg)
  7 {
  8         bool show_prefix = arg->show_string_prefix;
  9         const char *prefix = "W";
 10         int printed = 0, options = arg->val;
 11 
 12 #define P_OPTION(n) \
 13         if (options & W##n) { \
 14                 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "",  #n); \
 15                 options &= ~W##n; \
 16         }
 17 
 18         P_OPTION(NOHANG);
 19         P_OPTION(UNTRACED);
 20         P_OPTION(CONTINUED);
 21 #undef P_OPTION
 22 
 23         if (options)
 24                 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", options);
 25 
 26         return printed;
 27 }
 28 
 29 #define SCA_WAITID_OPTIONS syscall_arg__scnprintf_waitid_options
 30 

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