split utils/threads.h into multiple headers
AndroidDefs.h - C/C++ enums and types
Mutex.h - Mutex class declaration
Condition.h - Condition class declaration
RWLock.h - RWLock class declaration
Thread.h - Thread class declaration
AndroidThreads.h - low-level thread creation functions
threads.h - includes all the above for backward source compatibility
Change-Id: Ia2f80c175333b59a41d1720985810bb2346e94cb
Note: implementations are still in Threads.cpp
diff --git a/include/utils/ThreadDefs.h b/include/utils/ThreadDefs.h
new file mode 100644
index 0000000..3e56373
--- /dev/null
+++ b/include/utils/ThreadDefs.h
@@ -0,0 +1,123 @@
+/*
+ * 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 _LIBS_UTILS_THREAD_DEFS_H
+#define _LIBS_UTILS_THREAD_DEFS_H
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <system/graphics.h>
+
+// ---------------------------------------------------------------------------
+// C API
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void* android_thread_id_t;
+
+typedef int (*android_thread_func_t)(void*);
+
+enum {
+ /*
+ * ***********************************************
+ * ** Keep in sync with android.os.Process.java **
+ * ***********************************************
+ *
+ * This maps directly to the "nice" priorities we use in Android.
+ * A thread priority should be chosen inverse-proportionally to
+ * the amount of work the thread is expected to do. The more work
+ * a thread will do, the less favorable priority it should get so that
+ * it doesn't starve the system. Threads not behaving properly might
+ * be "punished" by the kernel.
+ * Use the levels below when appropriate. Intermediate values are
+ * acceptable, preferably use the {MORE|LESS}_FAVORABLE constants below.
+ */
+ ANDROID_PRIORITY_LOWEST = 19,
+
+ /* use for background tasks */
+ ANDROID_PRIORITY_BACKGROUND = 10,
+
+ /* most threads run at normal priority */
+ ANDROID_PRIORITY_NORMAL = 0,
+
+ /* threads currently running a UI that the user is interacting with */
+ ANDROID_PRIORITY_FOREGROUND = -2,
+
+ /* the main UI thread has a slightly more favorable priority */
+ ANDROID_PRIORITY_DISPLAY = -4,
+
+ /* ui service treads might want to run at a urgent display (uncommon) */
+ ANDROID_PRIORITY_URGENT_DISPLAY = HAL_PRIORITY_URGENT_DISPLAY,
+
+ /* all normal audio threads */
+ ANDROID_PRIORITY_AUDIO = -16,
+
+ /* service audio threads (uncommon) */
+ ANDROID_PRIORITY_URGENT_AUDIO = -19,
+
+ /* should never be used in practice. regular process might not
+ * be allowed to use this level */
+ ANDROID_PRIORITY_HIGHEST = -20,
+
+ ANDROID_PRIORITY_DEFAULT = ANDROID_PRIORITY_NORMAL,
+ ANDROID_PRIORITY_MORE_FAVORABLE = -1,
+ ANDROID_PRIORITY_LESS_FAVORABLE = +1,
+};
+
+enum {
+ ANDROID_TGROUP_DEFAULT = 0,
+ ANDROID_TGROUP_BG_NONINTERACT = 1,
+ ANDROID_TGROUP_FG_BOOST = 2,
+ ANDROID_TGROUP_MAX = ANDROID_TGROUP_FG_BOOST,
+};
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+// ---------------------------------------------------------------------------
+// C++ API
+#ifdef __cplusplus
+namespace android {
+// ---------------------------------------------------------------------------
+
+typedef android_thread_id_t thread_id_t;
+typedef android_thread_func_t thread_func_t;
+
+enum {
+ PRIORITY_LOWEST = ANDROID_PRIORITY_LOWEST,
+ PRIORITY_BACKGROUND = ANDROID_PRIORITY_BACKGROUND,
+ PRIORITY_NORMAL = ANDROID_PRIORITY_NORMAL,
+ PRIORITY_FOREGROUND = ANDROID_PRIORITY_FOREGROUND,
+ PRIORITY_DISPLAY = ANDROID_PRIORITY_DISPLAY,
+ PRIORITY_URGENT_DISPLAY = ANDROID_PRIORITY_URGENT_DISPLAY,
+ PRIORITY_AUDIO = ANDROID_PRIORITY_AUDIO,
+ PRIORITY_URGENT_AUDIO = ANDROID_PRIORITY_URGENT_AUDIO,
+ PRIORITY_HIGHEST = ANDROID_PRIORITY_HIGHEST,
+ PRIORITY_DEFAULT = ANDROID_PRIORITY_DEFAULT,
+ PRIORITY_MORE_FAVORABLE = ANDROID_PRIORITY_MORE_FAVORABLE,
+ PRIORITY_LESS_FAVORABLE = ANDROID_PRIORITY_LESS_FAVORABLE,
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+#endif // __cplusplus
+// ---------------------------------------------------------------------------
+
+
+#endif // _LIBS_UTILS_THREAD_DEFS_H