Line data Source code
1 : /**
2 : * Copyright (c) 2025 Huawei Technologies Co., Ltd.
3 : * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
4 : * CANN Open Software License Agreement Version 2.0 (the "License").
5 : * Please refer to the License for details. You may not use this file except in compliance with the License.
6 : * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
7 : * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
8 : * See LICENSE in the root of the software repository for the full text of the License.
9 : */
10 :
11 : #include "bqs_so_manager.h"
12 :
13 : #include <dlfcn.h>
14 : #include "bqs_log.h"
15 :
16 : namespace bqs {
17 114 : void* SoManager::GetFuncHandle(const std::string& funcName) const
18 : {
19 114 : if (soHandle_ == nullptr) {
20 10 : BQS_LOG_ERROR(
21 : "Get func handle failed by so handle is nullptr, soName=%s, funcName=%s.", soName_.c_str(),
22 : funcName.c_str());
23 10 : return nullptr;
24 : }
25 :
26 104 : const auto& iter = funcHandleMap_.find(funcName);
27 104 : if (iter == funcHandleMap_.end()) {
28 2 : BQS_LOG_ERROR("Func not loaded during init, soName=%s, funcName=%s.", soName_.c_str(), funcName.c_str());
29 2 : return nullptr;
30 : }
31 :
32 102 : return iter->second;
33 : }
34 :
35 15 : bool SoManager::IsSoLoad() const { return soHandle_ != nullptr; }
36 :
37 14 : void SoManager::OpenSo()
38 : {
39 14 : if (soName_.empty()) {
40 2 : BQS_LOG_ERROR("Open so failed by so name is empty.");
41 2 : return;
42 : }
43 :
44 12 : soHandle_ = dlopen(soName_.c_str(), RTLD_LAZY);
45 12 : if (soHandle_ == nullptr) {
46 8 : BQS_LOG_ERROR("Open so failed, soName=%s, reason=%s.", soName_.c_str(), dlerror());
47 : }
48 :
49 12 : return;
50 : }
51 :
52 14 : void SoManager::CloseSo()
53 : {
54 14 : if (soHandle_ == nullptr) {
55 11 : return;
56 : }
57 :
58 3 : const int32_t ret = dlclose(soHandle_);
59 3 : if (ret != 0) {
60 0 : BQS_LOG_WARN("Close so failed, soName=%s, reason=%s.", soName_.c_str(), dlerror());
61 : }
62 :
63 3 : soHandle_ = nullptr;
64 3 : return;
65 : }
66 :
67 4 : void SoManager::BatchLoadFunc(const std::vector<std::string>& funcNames)
68 : {
69 4 : if (soHandle_ == nullptr) {
70 0 : BQS_LOG_ERROR("Get func handle failed by so handle is nullptr, soName=%s.", soName_.c_str());
71 0 : return;
72 : }
73 :
74 15 : for (const std::string& funcName : funcNames) {
75 11 : void* funcPtr = GetFuncHandleFromSo(funcName);
76 11 : if (funcPtr != nullptr) {
77 10 : (void)funcHandleMap_.emplace(funcName, funcPtr);
78 : }
79 : }
80 :
81 4 : return;
82 : }
83 :
84 11 : void* SoManager::GetFuncHandleFromSo(const std::string& funcName) const
85 : {
86 11 : void* funcPtr = dlsym(soHandle_, funcName.c_str());
87 11 : if (funcPtr == nullptr) {
88 1 : BQS_LOG_ERROR(
89 : "Get func handle from so failed, soName=%s, funcName=%s, error=%s.", soName_.c_str(), funcName.c_str(),
90 : dlerror());
91 1 : return nullptr;
92 : }
93 :
94 10 : return funcPtr;
95 : }
96 : } // namespace bqs
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