1 /**
2 * Copyright (c) 2025 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 "conditional_breakpoint.h"
17
18 #include "debug_info_extractor.h"
19 #include "error.h"
20 #include "evaluation/evaluation_engine.h"
21
22 namespace ark::tooling::inspector {
23
ShouldStopAt(const PtLocation & location,EvaluationEngine & engine)24 bool ConditionalBreakpoint::ShouldStopAt(const PtLocation &location, EvaluationEngine &engine)
25 {
26 if (!location_.has_value() || !(*location_ == location)) {
27 return false;
28 }
29 // Condition is evaluated in the context of top frame
30 auto evalRes = engine.EvaluateExpression(0, bytecode_, &method_);
31 if (!evalRes) {
32 HandleError(evalRes.Error());
33 return false;
34 }
35 if (evalRes.Value().second != nullptr) {
36 LOG(WARNING, DEBUGGER) << "Breakpoint #" << GetId() << " condition evaluated with an exception";
37 return false;
38 }
39 return evalRes.Value().first.GetAsU1();
40 }
41
SetLocations(std::set<std::string_view> & sourceFiles,const DebugInfoCache & debugCache,std::unordered_multimap<PtLocation,BreakpointId,HashLocation> & breakpointLocations)42 bool ConditionalBreakpoint::SetLocations(
43 std::set<std::string_view> &sourceFiles, const DebugInfoCache &debugCache,
44 std::unordered_multimap<PtLocation, BreakpointId, HashLocation> &breakpointLocations)
45 {
46 auto locations = debugCache.GetBreakpointLocations(sourceFileFilter_, lineNumber_, sourceFiles);
47 if (locations.size() > 1) {
48 LOG(WARNING, DEBUGGER) << "Will not set conditional breakpoint for more than one location";
49 return false;
50 }
51
52 if (locations.empty()) {
53 LOG(WARNING, DEBUGGER) << "Pending breakpoint, 0 locations resolved currently, id = " << GetId();
54 return true;
55 }
56
57 location_ = *locations.begin();
58 breakpointLocations.emplace(location_.value(), GetId());
59 Resolve();
60 return true;
61 }
62
TryResolveImpl(const panda_file::File & file,const panda_file::DebugInfoExtractor * debugInfo,std::unordered_multimap<PtLocation,BreakpointId,HashLocation> & breakpointLocations)63 void ConditionalBreakpoint::TryResolveImpl(
64 const panda_file::File &file, const panda_file::DebugInfoExtractor *debugInfo,
65 std::unordered_multimap<PtLocation, BreakpointId, HashLocation> &breakpointLocations)
66 {
67 if (IsResolved()) {
68 return;
69 }
70
71 auto lineHandler = [this, &breakpointLocations](const auto &pandaFile, auto methodId, auto &entry) {
72 if (entry.line == lineNumber_) {
73 location_.emplace(pandaFile.GetFilename().data(), methodId, entry.offset);
74 breakpointLocations.emplace(location_.value(), GetId());
75 Resolve();
76 // Must choose the first found bytecode location in each method
77 return false;
78 }
79 // Continue search
80 return true;
81 };
82
83 for (const auto &methodId : debugInfo->GetMethodIdList()) {
84 if (!sourceFileFilter_(debugInfo->GetSourceFile(methodId))) {
85 continue;
86 }
87
88 auto &table = debugInfo->GetLineNumberTable(methodId);
89 for (auto &entry : table) {
90 if (!lineHandler(file, methodId, entry)) {
91 break;
92 }
93 }
94 }
95 }
96
97 } // namespace ark::tooling::inspector
98