117 lines
4.0 KiB
C
117 lines
4.0 KiB
C
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBS_UTILS_THREAD_DEFS_H
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#define _LIBS_UTILS_THREAD_DEFS_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <system/graphics.h>
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// ---------------------------------------------------------------------------
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// C API
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void* android_thread_id_t;
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typedef int (*android_thread_func_t)(void*);
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enum {
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/*
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* ***********************************************
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* ** Keep in sync with android.os.Process.java **
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* ***********************************************
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*
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* This maps directly to the "nice" priorities we use in Android.
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* A thread priority should be chosen inverse-proportionally to
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* the amount of work the thread is expected to do. The more work
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* a thread will do, the less favorable priority it should get so that
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* it doesn't starve the system. Threads not behaving properly might
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* be "punished" by the kernel.
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* Use the levels below when appropriate. Intermediate values are
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* acceptable, preferably use the {MORE|LESS}_FAVORABLE constants below.
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*/
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ANDROID_PRIORITY_LOWEST = 19,
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/* use for background tasks */
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ANDROID_PRIORITY_BACKGROUND = 10,
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/* most threads run at normal priority */
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ANDROID_PRIORITY_NORMAL = 0,
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/* threads currently running a UI that the user is interacting with */
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ANDROID_PRIORITY_FOREGROUND = -2,
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/* the main UI thread has a slightly more favorable priority */
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ANDROID_PRIORITY_DISPLAY = -4,
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/* ui service treads might want to run at a urgent display (uncommon) */
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ANDROID_PRIORITY_URGENT_DISPLAY = HAL_PRIORITY_URGENT_DISPLAY,
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/* all normal audio threads */
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ANDROID_PRIORITY_AUDIO = -16,
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/* service audio threads (uncommon) */
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ANDROID_PRIORITY_URGENT_AUDIO = -19,
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/* should never be used in practice. regular process might not
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* be allowed to use this level */
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ANDROID_PRIORITY_HIGHEST = -20,
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ANDROID_PRIORITY_DEFAULT = ANDROID_PRIORITY_NORMAL,
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ANDROID_PRIORITY_MORE_FAVORABLE = -1,
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ANDROID_PRIORITY_LESS_FAVORABLE = +1,
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};
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#ifdef __cplusplus
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} // extern "C"
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#endif
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// ---------------------------------------------------------------------------
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// C++ API
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#ifdef __cplusplus
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namespace android {
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// ---------------------------------------------------------------------------
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typedef android_thread_id_t thread_id_t;
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typedef android_thread_func_t thread_func_t;
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enum {
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PRIORITY_LOWEST = ANDROID_PRIORITY_LOWEST,
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PRIORITY_BACKGROUND = ANDROID_PRIORITY_BACKGROUND,
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PRIORITY_NORMAL = ANDROID_PRIORITY_NORMAL,
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PRIORITY_FOREGROUND = ANDROID_PRIORITY_FOREGROUND,
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PRIORITY_DISPLAY = ANDROID_PRIORITY_DISPLAY,
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PRIORITY_URGENT_DISPLAY = ANDROID_PRIORITY_URGENT_DISPLAY,
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PRIORITY_AUDIO = ANDROID_PRIORITY_AUDIO,
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PRIORITY_URGENT_AUDIO = ANDROID_PRIORITY_URGENT_AUDIO,
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PRIORITY_HIGHEST = ANDROID_PRIORITY_HIGHEST,
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PRIORITY_DEFAULT = ANDROID_PRIORITY_DEFAULT,
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PRIORITY_MORE_FAVORABLE = ANDROID_PRIORITY_MORE_FAVORABLE,
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PRIORITY_LESS_FAVORABLE = ANDROID_PRIORITY_LESS_FAVORABLE,
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // __cplusplus
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// ---------------------------------------------------------------------------
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#endif // _LIBS_UTILS_THREAD_DEFS_H
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