1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "ProcessInfo"
19#include <utils/Log.h>
20
21#include <media/stagefright/ProcessInfo.h>
22
23#include <binder/IProcessInfoService.h>
24#include <binder/IServiceManager.h>
25
26namespace android {
27
28ProcessInfo::ProcessInfo() {}
29
30bool ProcessInfo::getPriority(int pid, int* priority) {
31    sp<IBinder> binder = defaultServiceManager()->getService(String16("processinfo"));
32    sp<IProcessInfoService> service = interface_cast<IProcessInfoService>(binder);
33
34    size_t length = 1;
35    int32_t states;
36    status_t err = service->getProcessStatesFromPids(length, &pid, &states);
37    if (err != OK) {
38        ALOGE("getProcessStatesFromPids failed");
39        return false;
40    }
41    ALOGV("pid %d states %d", pid, states);
42    if (states < 0) {
43        return false;
44    }
45
46    // Use process state as the priority. Lower the value, higher the priority.
47    *priority = states;
48    return true;
49}
50
51ProcessInfo::~ProcessInfo() {}
52
53}  // namespace android
54