libcutils: Add abstracted support for setting scheduler policies

Also changes the background policy to use SCHED_BATCH. IDLEPRIO
can cause 100% starvation.

Signed-off-by: San Mehat <san@google.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/include/cutils/sched_policy.h b/include/cutils/sched_policy.h
new file mode 100644
index 0000000..efa7cbc
--- /dev/null
+++ b/include/cutils/sched_policy.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __CUTILS_SCHED_POLICY_H
+#define __CUTILS_SCHED_POLICY_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    SP_BACKGROUND = 0,
+    SP_FOREGROUND = 1,
+} SchedPolicy;
+
+extern int set_sched_policy(int tid, SchedPolicy policy);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CUTILS_SCHED_POLICY_H */