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    Command:

    wait3

    
    
    

    SYNOPSIS

           #include <sys/types.h>
           #include <sys/time.h>
           #include <sys/resource.h>
           #include <sys/wait.h>
    
           pid_t wait3(int *status, int options,
                       struct rusage *rusage);
    
           pid_t wait4(pid_t pid, int *status, int options,
                       struct rusage *rusage);
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           wait3():
               _BSD_SOURCE || _XOPEN_SOURCE >= 500 ||
               _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
           wait4():
               _BSD_SOURCE
    
    
    

    DESCRIPTION

           These functions are obsolete; use waitpid(2) or waitid(2) in  new  pro-
           grams.
    
           The  wait3()  and  wait4()  system calls are similar to waitpid(2), but
           additionally return resource usage information about the child  in  the
           structure pointed to by rusage.
    
           Other than the use of the rusage argument, the following wait3() call:
    
               wait3(status, options, rusage);
    
           is equivalent to:
    
               waitpid(-1, status, options);
    
           Similarly, the following wait4() call:
    
               wait4(pid, status, options, rusage);
    
           is equivalent to:
    
               waitpid(pid, status, options);
    
           In  other  words, wait3() waits of any child, while wait4() can be used
           to select a specific child, or children, on which to wait.  See wait(2)
           for further details.
    
           If  rusage  is  not  NULL, the struct rusage to which it points will be
           filled with accounting information about the child.   See  getrusage(2)
           for details.
    
           bility.   (Indeed,  <sys/resource.h>  defines the rusage structure with
           fields of type struct timeval defined in <sys/time.h>.)
    
           On Linux, wait3() is a library  function  implemented  on  top  of  the
           wait4() system call.
    
    
    

    SEE ALSO

           fork(2), getrusage(2), sigaction(2), signal(2), wait(2), signal(7)
    
    
    

    Linux 2012-09-23 WAIT4(2)

    
    
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