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  1. #ifndef _SYS_WAIT_H
  2. #define _SYS_WAIT_H
  3.  
  4. #ifdef __cplusplus
  5. extern "C" {
  6. #endif
  7.  
  8. #include <sys/types.h>
  9.  
  10. #define WNOHANG 1
  11. #define WUNTRACED 2
  12.  
  13. /* A status looks like:
  14.       <2 bytes info> <2 bytes code>
  15.  
  16.       <code> == 0, child has exited, info is the exit value
  17.       <code> == 1..7e, child has exited, info is the signal number.
  18.       <code> == 7f, child has stopped, info was the signal number.
  19.       <code> == 80, there was a core dump.
  20. */
  21.    
  22. #define WIFEXITED(w)    (((w) & 0xff) == 0)
  23. #define WIFSIGNALED(w)  (((w) & 0x7f) > 0 && (((w) & 0x7f) < 0x7f))
  24. #define WIFSTOPPED(w)   (((w) & 0xff) == 0x7f)
  25. #define WEXITSTATUS(w)  (((w) >> 8) & 0xff)
  26. #define WTERMSIG(w)     ((w) & 0x7f)
  27. #define WSTOPSIG        WEXITSTATUS
  28.  
  29. pid_t wait (int *);
  30. pid_t waitpid (pid_t, int *, int);
  31.  
  32. #ifdef _COMPILING_NEWLIB
  33. pid_t _wait (int *);
  34. #endif
  35.  
  36. /* Provide prototypes for most of the _<systemcall> names that are
  37.    provided in newlib for some compilers.  */
  38. pid_t _wait (int *);
  39.  
  40. #ifdef __cplusplus
  41. };
  42. #endif
  43.  
  44. #endif
  45.