wstat(5)wstat(5)NAMEwstat - wait status
SYNOPSIS
#include <sys/wait.h>
DESCRIPTION
When a process waits for status from its children via either the wait or
waitpid function, the status returned may be evaluated with the following
macros, defined in sys/wait.h. These macros evaluate to integral
expressions. The stat argument to these macros is the integer value
returned from wait or waitpid.
WIFEXITED(stat) Evaluates to a non-zero value if status was returned
for a child process that terminated normally.
WEXITSTATUS(stat) If the value of WIFEXITED(stat) is non-zero, this
macro evaluates to the exit code that the child
process passed to _exit or exit, or the value that
the child process returned from main.
WIFSIGNALED(stat) Evaluates to a non-zero value if status was returned
for a child process that terminated due to the
receipt of a signal.
WTERMSIG(stat) If the value of WIFSIGNALED(stat) is non-zero, this
macro evaluates to the number of the signal that
caused the termination of the child process.
WIFSTOPPED(stat) Evaluates to a non-zero value if status was returned
for a child process that is currently stopped.
WSTOPSIG(stat) If the value of WIFSTOPPED(stat) is non-zero, this
macro evaluates to the number of the signal that
caused the child process to stop.
WIFCONTINUED(stat) Evaluates to a non-zero value if status was returned
for a child process that has continued.
WCOREDUMP(stat) If the value of WIFSIGNALED(stat) is non-zero, this
macro evaluates to a non-zero value if a core image
of the terminated child was created.
SEE ALSOexit(2), wait(2), waitpid(2)
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