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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
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')
-rw-r--r--sysdeps/posix/sysconf.c6
-rw-r--r--sysdeps/unix/get_child_max.c37
2 files changed, 40 insertions, 3 deletions
diff --git a/sysdeps/posix/sysconf.c b/sysdeps/posix/sysconf.c
index de72e84..cb5137c 100644
--- a/sysdeps/posix/sysconf.c
+++ b/sysdeps/posix/sysconf.c
@@ -1,5 +1,5 @@
-/* Copyright (C) 1991,1993,1995-1997,1999-2003,2004
- Free Software Foundation, Inc.
+/* Copyright (C) 1991,1993,1995-1997,1999-2003,2004,2006
+ 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
@@ -68,7 +68,7 @@ __sysconf (name)
#ifdef CHILD_MAX
return CHILD_MAX;
#else
- return -1;
+ return __get_child_max ();
#endif
case _SC_CLK_TCK:
diff --git a/sysdeps/unix/get_child_max.c b/sysdeps/unix/get_child_max.c
new file mode 100644
index 0000000..c59e4d8
--- /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