1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "memorytracker_interface_impl.h"
17 #include <hdf_base.h>
18 #include <hdf_log.h>
19 #include <dlfcn.h>
20
21 namespace OHOS {
22 namespace HDI {
23 namespace Memorytracker {
24 namespace V1_0 {
25 #define HDF_LOG_TAG hdf_memorytracker_impl
26 using GetDevMemFunc = int32_t (*)(int32_t, MemoryTrackerType, std::vector<MemoryRecord>&);
27
MemoryTrackerInterfaceImplGetInstance(void)28 extern "C" IMemoryTrackerInterface *MemoryTrackerInterfaceImplGetInstance(void)
29 {
30 return new (std::nothrow) MemoryTrackerInterfaceImpl();
31 }
32
GetDevMem(int32_t pid,MemoryTrackerType type,std::vector<MemoryRecord> & records)33 int32_t MemoryTrackerInterfaceImpl::GetDevMem(int32_t pid, MemoryTrackerType type, std::vector<MemoryRecord>& records)
34 {
35 HDF_LOGI("%{public}s called!", __func__);
36
37 auto libMemTrackHandle = dlopen("libmemorytracker.default.so", RTLD_NOW);
38 if (!libMemTrackHandle) {
39 HDF_LOGE("%{public}s, dlopen libmemorytracker failed!", __func__);
40 return HDF_FAILURE;
41 }
42
43 auto getDevMemFunc = reinterpret_cast<GetDevMemFunc>(dlsym(libMemTrackHandle, "GetDevMem"));
44 if (!getDevMemFunc) {
45 HDF_LOGE("%{public}s, dlsym getDevMemFunc failed!", __func__);
46 dlclose(libMemTrackHandle);
47 return HDF_FAILURE;
48 }
49
50 if (getDevMemFunc(pid, type, records) != 0) {
51 HDF_LOGE("%{public}s, get device memory failed!", __func__);
52 dlclose(libMemTrackHandle);
53 return HDF_FAILURE;
54 }
55
56 dlclose(libMemTrackHandle);
57 HDF_LOGI("%{public}s, get device memory success!", __func__);
58 return HDF_SUCCESS;
59 }
60 } // V1_0
61 } // Memorytracker
62 } // HDI
63 } // OHOS
64