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1 /*
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2
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3 @deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)
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4
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5 This is a wrapper around the @code{wait} function. Any ``special''
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6 values of @var{pid} depend on your implementation of @code{wait}, as
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7 does the return value. The third argument is unused in @libib{}.
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8
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9 @end deftypefn
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10
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11 */
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12
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13 #ifdef HAVE_CONFIG_H
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14 #include "config.h"
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15 #endif
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16 #include "ansidecl.h"
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17
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18 /* On some systems (such as WindISS), you must include <sys/types.h>
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19 to get the definition of "pid_t" before you include <sys/wait.h>. */
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20 #include <sys/types.h>
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21
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22 #ifdef HAVE_SYS_WAIT_H
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23 #include <sys/wait.h>
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24 #endif
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25
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111
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26 #ifdef __MINGW32__
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27 #include <process.h>
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28 #define wait(s) _cwait(s,pid,_WAIT_CHILD)
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29 #endif
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30
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31 pid_t
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32 waitpid (pid_t pid, int *stat_loc, int options ATTRIBUTE_UNUSED)
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33 {
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34 for (;;)
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35 {
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36 int wpid = wait(stat_loc);
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37 if (wpid == pid || wpid == -1)
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38 return wpid;
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39 }
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40 }
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