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/*
* Copyright 2015 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_PROCESS_INFO_SERVICE_H
#define ANDROID_PROCESS_INFO_SERVICE_H
#ifndef __ANDROID_VNDK__
#include <binder/IProcessInfoService.h>
#include <utils/Errors.h>
#include <utils/Singleton.h>
#include <sys/types.h>
namespace android {
// ----------------------------------------------------------------------
class ProcessInfoService : public Singleton<ProcessInfoService> {
friend class Singleton<ProcessInfoService>;
sp<IProcessInfoService> mProcessInfoService;
Mutex mProcessInfoLock;
ProcessInfoService();
status_t getProcessStatesImpl(size_t length, /*in*/ int32_t* pids, /*out*/ int32_t* states);
status_t getProcessStatesScoresImpl(size_t length, /*in*/ int32_t* pids,
/*out*/ int32_t* states, /*out*/ int32_t *scores);
void updateBinderLocked();
static const int BINDER_ATTEMPT_LIMIT = 5;
public:
/**
* For each PID in the given "pids" input array, write the current process state
* for that process into the "states" output array, or
* ActivityManager.PROCESS_STATE_NONEXISTENT * to indicate that no process with the given PID
* exists.
*
* Returns NO_ERROR if this operation was successful, or a negative error code otherwise.
*/
static status_t getProcessStatesFromPids(size_t length, /*in*/ int32_t* pids,
/*out*/ int32_t* states) {
return ProcessInfoService::getInstance().getProcessStatesImpl(length, /*in*/ pids,
/*out*/ states);
}
/**
* For each PID in the given "pids" input array, write the current process state
* for that process into the "states" output array, or
* ActivityManager.PROCESS_STATE_NONEXISTENT * to indicate that no process with the given PID
* exists. OoM scores will also be written in the "scores" output array.
* Please also note that clients calling this method need to have
* "GET_PROCESS_STATE_AND_OOM_SCORE" permission.
*
* Returns NO_ERROR if this operation was successful, or a negative error code otherwise.
*/
static status_t getProcessStatesScoresFromPids(size_t length, /*in*/ int32_t* pids,
/*out*/ int32_t* states, /*out*/ int32_t *scores) {
return ProcessInfoService::getInstance().getProcessStatesScoresImpl(
length, /*in*/ pids, /*out*/ states, /*out*/ scores);
}
};
// ----------------------------------------------------------------------
} // namespace android
#else // __ANDROID_VNDK__
#error "This header is not visible to vendors"
#endif // __ANDROID_VNDK__
#endif // ANDROID_PROCESS_INFO_SERVICE_H
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