1 /* Emulate waitpid on systems that just have wait.
2 Copyright 1994, 1995, 1998, 1999, 2010 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #if defined _MSC_VER || defined __MINGW32__
27 /* Native Woe32 API. */
34 #define WAITPID_CHILDREN 8
35 static pid_t waited_pid[WAITPID_CHILDREN];
36 static int waited_status[WAITPID_CHILDREN];
39 waitpid (pid_t pid, int *stat_loc, int options)
44 if (!options && (pid == -1 || 0 < pid))
46 /* If we have already waited for this child, return it immediately. */
47 for (i = 0; i < WAITPID_CHILDREN; i++)
50 if (p && (p == pid || pid == -1))
57 /* The child has not returned yet; wait for it, accumulating status. */
58 for (i = 0; i < WAITPID_CHILDREN; i++)
61 p = wait (&waited_status[i]);
64 if (p == pid || pid == -1)
70 /* We cannot emulate this wait call, e.g. because of too many children. */
76 *stat_loc = waited_status[i];