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authorEric Andersen <andersen@codepoet.org>2004-01-21 23:27:48 +0000
committerEric Andersen <andersen@codepoet.org>2004-01-21 23:27:48 +0000
commit6334e558ab33ee1e54ed33740881a2798c5915c2 (patch)
tree5d3253d5928343d2a37cc55be7a9c35244b4ab42 /libc/sysdeps/linux/common/nice.c
parent9bafaa6fe7ded400aac87526ce615f1875ce2673 (diff)
Split up syscalls.c, since it had grown to be quite large and ugly.
-Erik
Diffstat (limited to 'libc/sysdeps/linux/common/nice.c')
-rw-r--r--libc/sysdeps/linux/common/nice.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/nice.c b/libc/sysdeps/linux/common/nice.c
new file mode 100644
index 000000000..087463b8c
--- /dev/null
+++ b/libc/sysdeps/linux/common/nice.c
@@ -0,0 +1,37 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * nice() for uClibc
+ *
+ * Copyright (C) 2000-2004 by Erik Andersen <andersen@codpoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ */
+
+#include "syscalls.h"
+#include <unistd.h>
+#ifdef __NR_nice
+_syscall1(int, nice, int, inc);
+#else
+#include <sys/resource.h>
+int nice(int incr)
+{
+ int save, prio, result;
+
+ save = errno;
+ __set_errno(0);
+ prio = getpriority(PRIO_PROCESS, 0);
+ if (prio == -1) {
+ if (errno != 0) {
+ return -1;
+ } else {
+ __set_errno(save);
+ }
+ }
+ result = setpriority(PRIO_PROCESS, 0, prio + incr);
+ if (result != -1) {
+ return prio + incr;
+ } else {
+ return -1;
+ }
+}
+#endif