1explain_wait4_or_die(3)    Library Functions Manual    explain_wait4_or_die(3)
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NAME

6       explain_wait4_or_die  -  wait  for  process  to change state and report
7       errors
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SYNOPSIS

10       #include <libexplain/wait4.h>
11       void explain_wait4_or_die(int pid, int  *status,  int  options,  struct
12       rusage *rusage);
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DESCRIPTION

15       The  explain_wait4_or_die  function is used to call the wait4(2) system
16       call.  On failure an explanation will be printed  to  stderr,  obtained
17       from  explain_wait4(3),  and  then  the  process  terminates by calling
18       exit(EXIT_FAILURE).
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20       This function is intended to be used in a fashion similar to  the  fol‐
21       lowing example:
22              explain_wait4_or_die(pid, status, options, rusage);
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24       pid     The pid, exactly as to be passed to the wait4(2) system call.
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26       status  The  status,  exactly  as  to  be passed to the wait4(2) system
27               call.
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29       options The options, exactly as to be passed  to  the  wait4(2)  system
30               call.
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32       rusage  The  rusage,  exactly  as  to  be passed to the wait4(2) system
33               call.
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35       Returns:
36               This function only returns on success, see  wait4(2)  for  more
37               information.  On failure, prints an explanation and exits.
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SEE ALSO

40       wait4(2)
41               wait for process to change state
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43       explain_wait4(3)
44               explain wait4(2) errors
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46       exit(2) terminate the calling process
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49       libexplain version 1.4
50       Copyright (C) 2008 Peter Miller
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54                                                       explain_wait4_or_die(3)
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