1/*
2 * Copyright (C) 2016 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_TAG "android.hardware.memtrack@1.0-impl"
18
19#include <log/log.h>
20
21#include <hardware/hardware.h>
22#include <hardware/memtrack.h>
23
24#include "Memtrack.h"
25
26namespace android {
27namespace hardware {
28namespace memtrack {
29namespace V1_0 {
30namespace implementation {
31
32Memtrack::Memtrack(const memtrack_module_t *module) : mModule(module) {
33    if (mModule)
34        mModule->init(mModule);
35}
36
37Memtrack::~Memtrack() {
38    delete(mModule);
39}
40
41Return<void> Memtrack::getMemory(int32_t pid, MemtrackType type,
42        getMemory_cb _hidl_cb)  {
43    hidl_vec<MemtrackRecord> records;
44    size_t temp = 0;
45    size_t *size = &temp;
46    int ret = 0;
47
48    if (mModule->getMemory == nullptr)
49    {
50        _hidl_cb(MemtrackStatus::SUCCESS, records);
51        return Void();
52    }
53    ret = mModule->getMemory(mModule, pid, static_cast<memtrack_type>(type),
54            NULL, size);
55    if (ret == 0)
56    {
57        memtrack_record *legacy_records = new memtrack_record[*size];
58        ret = mModule->getMemory(mModule, pid,
59                static_cast<memtrack_type>(type), legacy_records, size);
60        if (ret == 0)
61        {
62            records.resize(*size);
63            for(size_t i = 0; i < *size; i++)
64            {
65                records[i].sizeInBytes = legacy_records[i].size_in_bytes;
66                records[i].flags = legacy_records[i].flags;
67            }
68        }
69        delete[] legacy_records;
70    }
71    _hidl_cb(MemtrackStatus::SUCCESS, records);
72    return Void();
73}
74
75
76IMemtrack* HIDL_FETCH_IMemtrack(const char* /* name */) {
77    const hw_module_t* hw_module = nullptr;
78    const memtrack_module_t* memtrack_module = nullptr;
79    int err = hw_get_module(MEMTRACK_HARDWARE_MODULE_ID, &hw_module);
80    if (err) {
81        ALOGE ("hw_get_module %s failed: %d", MEMTRACK_HARDWARE_MODULE_ID, err);
82        return nullptr;
83    }
84
85    if (!hw_module->methods || !hw_module->methods->open) {
86        memtrack_module = reinterpret_cast<const memtrack_module_t*>(hw_module);
87    } else {
88        err = hw_module->methods->open(hw_module, MEMTRACK_HARDWARE_MODULE_ID,
89                reinterpret_cast<hw_device_t**>(const_cast<memtrack_module_t**>(&memtrack_module)));
90        if (err) {
91            ALOGE("Passthrough failed to load legacy HAL.");
92            return nullptr;
93        }
94    }
95    return new Memtrack(memtrack_module);
96}
97
98} // namespace implementation
99}  // namespace V1_0
100}  // namespace memtrack
101}  // namespace hardware
102}  // namespace android
103