Add FastThreadState

Change-Id: I3f07493375ace6e5cfdcd02ad90c4b6fad543b0c

3 files changed, 79 insertions, 1 deletions

diff --git a/services/audioflinger/Android.mk b/services/audioflinger/Android.mk
index 6cb0299..27e38a3 100644
--- a/services/audioflinger/Android.mk
+++ b/services/audioflinger/Android.mk
@@ -61,7 +61,7 @@ LOCAL_STATIC_LIBRARIES := \
 LOCAL_MODULE:= libaudioflinger
 LOCAL_32_BIT_ONLY := true
 
-LOCAL_SRC_FILES += FastMixer.cpp FastMixerState.cpp AudioWatchdog.cpp
+LOCAL_SRC_FILES += FastMixer.cpp FastMixerState.cpp AudioWatchdog.cpp FastThreadState.cpp
 
 LOCAL_CFLAGS += -DSTATE_QUEUE_INSTANTIATIONS='"StateQueueInstantiations.cpp"'
 
diff --git a/services/audioflinger/FastThreadState.cpp b/services/audioflinger/FastThreadState.cpp
new file mode 100644
index 0000000..427ada5
--- /dev/null
+++ b/services/audioflinger/FastThreadState.cpp
@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+#include "FastThreadState.h"
+
+namespace android {
+
+FastThreadState::FastThreadState() :
+    mCommand(INITIAL), mColdFutexAddr(NULL), mColdGen(0), mNBLogWriter(NULL)
+{
+}
+
+FastThreadState::~FastThreadState()
+{
+}
+
+}   // namespace android
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