Add FastThreadState
Change-Id: I3f07493375ace6e5cfdcd02ad90c4b6fad543b0c
diff --git a/services/audioflinger/FastThreadState.h b/services/audioflinger/FastThreadState.h
new file mode 100644
index 0000000..148fb7b
--- /dev/null
+++ b/services/audioflinger/FastThreadState.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2014 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 ANDROID_AUDIO_FAST_THREAD_STATE_H
+#define ANDROID_AUDIO_FAST_THREAD_STATE_H
+
+#include <stdint.h>
+#include <media/nbaio/NBLog.h>
+
+namespace android {
+
+// Represents a single state of a FastThread
+struct FastThreadState {
+ FastThreadState();
+ /*virtual*/ ~FastThreadState();
+
+ typedef uint32_t Command;
+ static const Command
+ INITIAL = 0, // used only for the initial state
+ HOT_IDLE = 1, // do nothing
+ COLD_IDLE = 2, // wait for the futex
+ IDLE = 3, // either HOT_IDLE or COLD_IDLE
+ EXIT = 4; // exit from thread
+ // additional values defined per subclass
+ Command mCommand;
+
+ int32_t* mColdFutexAddr; // for COLD_IDLE only, pointer to the associated futex
+ unsigned mColdGen; // increment when COLD_IDLE is requested so it's only performed once
+
+ NBLog::Writer* mNBLogWriter; // non-blocking logger
+}; // struct FastThreadState
+
+} // android
+
+#endif // ANDROID_AUDIO_FAST_THREAD_STATE_H