File: waitpid.c

package info (click to toggle)
gclcvs 2.7.0-101
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 135,252 kB
  • ctags: 174,324
  • sloc: ansic: 986,459; asm: 311,430; lisp: 242,735; exp: 45,962; makefile: 42,669; sh: 30,705; cpp: 13,316; yacc: 6,093; perl: 3,454; tcl: 3,179; lex: 1,620; sed: 688; pascal: 175; awk: 56; fortran: 24; csh: 23
file content (36 lines) | stat: -rw-r--r-- 768 bytes parent folder | download | duplicates (29) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
 
/*

@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

/* 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

pid_t
waitpid (pid, stat_loc, options)
     pid_t pid;
     int *stat_loc, options;
{
  for (;;)
    {
      int wpid = wait(stat_loc);
      if (wpid == pid || wpid == -1)
	return wpid;
    }
}