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authorRoland McGrath <roland@gnu.org>2006-01-08 09:39:29 +0000
committerRoland McGrath <roland@gnu.org>2006-01-08 09:39:29 +0000
commitaeb2153cd6ab300de1b241cd1528a3f6f260ad37 (patch)
tree829be0b73c642f466d92bc34501c30a512a05804 /sysdeps/unix
parent9b121343547d646f5e511446588f0ff69b168211 (diff)
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[BZ #1535]
	* sysdeps/unix/get_child_max.c: New file.
	* posix/get_child_max.c: New file.
	* posix/Makefile (routines): Add it.
	* include/sys/sysinfo.h (__get_child_max): Declare it.
	* sysdeps/posix/sysconf.c (__sysconf) [! CHILD_MAX]: Use it.
Diffstat (limited to 'sysdeps/unix')
-rw-r--r--sysdeps/unix/get_child_max.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/unix/get_child_max.c b/sysdeps/unix/get_child_max.c
new file mode 100644
index 0000000000..c59e4d8953
--- /dev/null
+++ b/sysdeps/unix/get_child_max.c
@@ -0,0 +1,37 @@
+/* Get POSIX {CHILD_MAX} run-time limit value.  Unix version.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <limits.h>
+#include <sys/sysinfo.h>
+#include <sys/resource.h>
+
+#ifndef CHILD_MAX
+long int
+__get_child_max (void)
+{
+# ifdef RLIMIT_NPROC
+  struct rlimit limit;
+  if (__getrlimit (RLIMIT_NPROC, &limit) == 0
+      && limit.rlim_cur != RLIM_INFINITY)
+    return limit.rlim_cur;
+# endif
+
+  return -1;
+}
+#endif