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      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 (at) 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 
     32 Memtrack::Memtrack(const memtrack_module_t *module) : mModule(module) {
     33     if (mModule)
     34         mModule->init(mModule);
     35 }
     36 
     37 Memtrack::~Memtrack() {
     38     delete(mModule);
     39 }
     40 
     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 
     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