This macro should be employed only if WIFSTOPPED Returns the number of the signal which caused the child to Using WUNTRACED or when the child is being traced (see Of a signal this is possible only if the call was done Returns true if the child process was stopped by delivery Therefore, enclose its use inside #ifdef WCOREDUMP. This macro is not specified in POSIX.1-2001 and is notĪvailable on some UNIX implementations (e.g., AIX, SunOS). Returns true if the child produced a core dump (seeĬore(5)). Returns the number of the signal that caused the child Returns true if the child process was terminated by a Should be employed only if WIFEXITED returned true.

The argument for a return statement in main(). The child specified in a call to exit(3) or _exit(2) or as The least significant 8 bits of the status argument that Returns true if the child terminated normally, that is, byĬalling exit(3) or _exit(2), or by returning from main(). Itself as an argument, not a pointer to it, as is done in wait() Inspected with the following macros (which take the integer Information in the int to which it points. If wstatus is not NULL, wait() and waitpid() store status Is provided even if this option is not specified.Īlso return if a stopped child has been resumed by Status for traced children which have stopped Return immediately if no child has exited.Īlso return if a child has stopped (but not traced via The value of options is an OR of zero or more of the following || /* Glibc 0 meaning wait for the child whose process ID is equal to */įeature Test Macro Requirements for glibc (see NOTES for information on the raw system call.

* This is the glibc and POSIX interface see SYNOPSIS top #include pid_t wait(int * wstatus ) pid_t waitpid(pid_t pid, int * wstatus, int options ) int waitid(idtype_t idtype, id_t id, siginfo_t * infop, int options )

Wait, waitpid, waitid - wait for process to change state WAIT(2) Linux Programmer's Manual WAIT(2) NAME top

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