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      1 #ifndef __PERF_SIGCHAIN_H
      2 #define __PERF_SIGCHAIN_H
      3 
      4 typedef void (*sigchain_fun)(int);
      5 
      6 int sigchain_pop(int sig);
      7 
      8 void sigchain_push_common(sigchain_fun f);
      9 
     10 #endif /* __PERF_SIGCHAIN_H */
     11