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
26 namespace android {
27 namespace hardware {
28 namespace memtrack {
29 namespace V1_0 {
30 namespace implementation {
31
Memtrack(const memtrack_module_t * module)32 Memtrack::Memtrack(const memtrack_module_t *module) : mModule(module) {
33 if (mModule)
34 mModule->init(mModule);
35 }
36
~Memtrack()37 Memtrack::~Memtrack() {
38 delete(mModule);
39 }
40
getMemory(int32_t pid,MemtrackType type,getMemory_cb _hidl_cb)41 Return<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
HIDL_FETCH_IMemtrack(const char *)76 IMemtrack* 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