/Users/buildslave/jenkins/workspace/coverage/llvm-project/lldb/source/Plugins/Process/minidump/MinidumpTypes.cpp
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1 | | //===-- MinidumpTypes.cpp -------------------------------------------------===// |
2 | | // |
3 | | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | | // See https://llvm.org/LICENSE.txt for license information. |
5 | | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | | // |
7 | | //===----------------------------------------------------------------------===// |
8 | | |
9 | | #include "MinidumpTypes.h" |
10 | | #include <optional> |
11 | | |
12 | | // C includes |
13 | | // C++ includes |
14 | | |
15 | | using namespace lldb_private; |
16 | | using namespace minidump; |
17 | | |
18 | | // MinidumpMiscInfo |
19 | 64 | const MinidumpMiscInfo *MinidumpMiscInfo::Parse(llvm::ArrayRef<uint8_t> &data) { |
20 | 64 | const MinidumpMiscInfo *misc_info; |
21 | 64 | Status error = consumeObject(data, misc_info); |
22 | 64 | if (error.Fail()) |
23 | 0 | return nullptr; |
24 | | |
25 | 64 | return misc_info; |
26 | 64 | } |
27 | | |
28 | 64 | std::optional<lldb::pid_t> MinidumpMiscInfo::GetPid() const { |
29 | 64 | uint32_t pid_flag = static_cast<uint32_t>(MinidumpMiscInfoFlags::ProcessID); |
30 | 64 | if (flags1 & pid_flag) |
31 | 64 | return std::optional<lldb::pid_t>(process_id); |
32 | | |
33 | 0 | return std::nullopt; |
34 | 64 | } |
35 | | |
36 | | // Linux Proc Status |
37 | | // it's stored as an ascii string in the file |
38 | | std::optional<LinuxProcStatus> |
39 | 22 | LinuxProcStatus::Parse(llvm::ArrayRef<uint8_t> &data) { |
40 | 22 | LinuxProcStatus result; |
41 | 22 | result.proc_status = |
42 | 22 | llvm::StringRef(reinterpret_cast<const char *>(data.data()), data.size()); |
43 | 22 | data = data.drop_front(data.size()); |
44 | | |
45 | 22 | llvm::SmallVector<llvm::StringRef, 0> lines; |
46 | 22 | result.proc_status.split(lines, '\n', 42); |
47 | | // /proc/$pid/status has 41 lines, but why not use 42? |
48 | 109 | for (auto line : lines) { |
49 | 109 | if (line.consume_front("Pid:")) { |
50 | 22 | line = line.trim(); |
51 | 22 | if (!line.getAsInteger(10, result.pid)) |
52 | 22 | return result; |
53 | 22 | } |
54 | 109 | } |
55 | | |
56 | 0 | return std::nullopt; |
57 | 22 | } |
58 | | |
59 | 22 | lldb::pid_t LinuxProcStatus::GetPid() const { return pid; } |
60 | | |
61 | | std::pair<llvm::ArrayRef<MinidumpMemoryDescriptor64>, uint64_t> |
62 | 17 | MinidumpMemoryDescriptor64::ParseMemory64List(llvm::ArrayRef<uint8_t> &data) { |
63 | 17 | const llvm::support::ulittle64_t *mem_ranges_count; |
64 | 17 | Status error = consumeObject(data, mem_ranges_count); |
65 | 17 | if (error.Fail() || |
66 | 17 | *mem_ranges_count * sizeof(MinidumpMemoryDescriptor64) > data.size()) |
67 | 0 | return {}; |
68 | | |
69 | 17 | const llvm::support::ulittle64_t *base_rva; |
70 | 17 | error = consumeObject(data, base_rva); |
71 | 17 | if (error.Fail()) |
72 | 0 | return {}; |
73 | | |
74 | 17 | return std::make_pair( |
75 | 17 | llvm::ArrayRef( |
76 | 17 | reinterpret_cast<const MinidumpMemoryDescriptor64 *>(data.data()), |
77 | 17 | *mem_ranges_count), |
78 | 17 | *base_rva); |
79 | 17 | } |