/*
|
* Copyright (C) 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.
|
*/
|
|
//#define LOG_NDEBUG 0
|
#define LOG_TAG "ProcessInfo"
|
#include <utils/Log.h>
|
|
#include <media/stagefright/ProcessInfo.h>
|
|
#include <binder/IPCThreadState.h>
|
#include <binder/IProcessInfoService.h>
|
#include <binder/IServiceManager.h>
|
|
namespace android {
|
|
ProcessInfo::ProcessInfo() {}
|
|
bool ProcessInfo::getPriority(int pid, int* priority) {
|
sp<IBinder> binder = defaultServiceManager()->getService(String16("processinfo"));
|
sp<IProcessInfoService> service = interface_cast<IProcessInfoService>(binder);
|
|
size_t length = 1;
|
int32_t state;
|
static const int32_t INVALID_ADJ = -10000;
|
static const int32_t NATIVE_ADJ = -1000;
|
int32_t score = INVALID_ADJ;
|
status_t err = service->getProcessStatesAndOomScoresFromPids(length, &pid, &state, &score);
|
if (err != OK) {
|
ALOGE("getProcessStatesAndOomScoresFromPids failed");
|
return false;
|
}
|
ALOGV("pid %d state %d score %d", pid, state, score);
|
if (score <= NATIVE_ADJ) {
|
ALOGE("pid %d invalid OOM adjustments value %d", pid, score);
|
return false;
|
}
|
|
// Use OOM adjustments value as the priority. Lower the value, higher the priority.
|
*priority = score;
|
return true;
|
}
|
|
bool ProcessInfo::isValidPid(int pid) {
|
int callingPid = IPCThreadState::self()->getCallingPid();
|
// Trust it if this is called from the same process otherwise pid has to match the calling pid.
|
return (callingPid == getpid()) || (callingPid == pid);
|
}
|
|
ProcessInfo::~ProcessInfo() {}
|
|
} // namespace android
|
