41 lines
868 B
C
41 lines
868 B
C
|
/*
|
||
|
|
|
||
|
|
@deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)
|
||
|
|
|
||
|
|
This is a wrapper around the @code{wait} function. Any ``special''
|
||
|
|
values of @var{pid} depend on your implementation of @code{wait}, as
|
||
|
|
does the return value. The third argument is unused in @libib{}.
|
||
|
|
|
||
|
|
@end deftypefn
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include "config.h"
|
||
|
|
#endif
|
||
|
|
#include "ansidecl.h"
|
||
|
|
|
||
|
|
/* On some systems (such as WindISS), you must include <sys/types.h>
|
||
|
|
to get the definition of "pid_t" before you include <sys/wait.h>. */
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#ifdef HAVE_SYS_WAIT_H
|
||
|
|
#include <sys/wait.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __MINGW32__
|
||
|
|
#include <process.h>
|
||
|
|
#define wait(s) _cwait(s,pid,_WAIT_CHILD)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
pid_t
|
||
|
|
waitpid (pid_t pid, int *stat_loc, int options ATTRIBUTE_UNUSED)
|
||
|
|
{
|
||
|
|
for (;;)
|
||
|
|
{
|
||
|
|
int wpid = wait(stat_loc);
|
||
|
|
if (wpid == pid || wpid == -1)
|
||
|
|
return wpid;
|
||
|
|
}
|
||
|
|
}
|