clang-tools 8.0.0

ClangTidyProfiling.cpp
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1 //===--- ClangTidyProfiling.cpp - clang-tidy --------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "ClangTidyProfiling.h"
11 #include "llvm/ADT/STLExtras.h"
12 #include "llvm/ADT/SmallString.h"
13 #include "llvm/Support/FileSystem.h"
14 #include "llvm/Support/Path.h"
15 #include "llvm/Support/YAMLTraits.h"
16 #include "llvm/Support/raw_ostream.h"
17 #include <system_error>
18 #include <utility>
19
20 #define DEBUG_TYPE "clang-tidy-profiling"
21
22 namespace clang {
23 namespace tidy {
24
25 ClangTidyProfiling::StorageParams::StorageParams(llvm::StringRef ProfilePrefix,
26 llvm::StringRef SourceFile)
27 : Timestamp(std::chrono::system_clock::now()), SourceFilename(SourceFile) {
28 llvm::SmallString<32> TimestampStr;
29 llvm::raw_svector_ostream OS(TimestampStr);
30 llvm::format_provider<decltype(Timestamp)>::format(Timestamp, OS,
31 "%Y%m%d%H%M%S%N");
32
33 llvm::SmallString<256> FinalPrefix(ProfilePrefix);
34 llvm::sys::path::append(FinalPrefix, TimestampStr);
35
36 // So the full output name is: /ProfilePrefix/timestamp-inputfilename.json
37 StoreFilename = llvm::Twine(FinalPrefix + "-" +
38 llvm::sys::path::filename(SourceFile) + ".json")
39 .str();
40 }
41
42 void ClangTidyProfiling::printUserFriendlyTable(llvm::raw_ostream &OS) {
43 TG->print(OS);
44 OS.flush();
45 }
46
47 void ClangTidyProfiling::printAsJSON(llvm::raw_ostream &OS) {
48 OS << "{\n";
49 OS << "\"file\": \"" << Storage->SourceFilename << "\",\n";
50 OS << "\"timestamp\": \"" << Storage->Timestamp << "\",\n";
51 OS << "\"profile\": {\n";
52 TG->printJSONValues(OS, "");
53 OS << "\n}\n";
54 OS << "}\n";
55 OS.flush();
56 }
57
58 void ClangTidyProfiling::storeProfileData() {
59 assert(Storage.hasValue() && "We should have a filename.");
60
61 llvm::SmallString<256> OutputDirectory(Storage->StoreFilename);
62 llvm::sys::path::remove_filename(OutputDirectory);
63 if (std::error_code EC = llvm::sys::fs::create_directories(OutputDirectory)) {
64 llvm::errs() << "Unable to create output directory '" << OutputDirectory
65 << "': " << EC.message() << "\n";
66 return;
67 }
68
69 std::error_code EC;
70 llvm::raw_fd_ostream OS(Storage->StoreFilename, EC, llvm::sys::fs::F_None);
71 if (EC) {
72 llvm::errs() << "Error opening output file '" << Storage->StoreFilename
73 << "': " << EC.message() << "\n";
74 return;
75 }
76
77 printAsJSON(OS);
78 }
79
80 ClangTidyProfiling::ClangTidyProfiling(llvm::Optional<StorageParams> Storage)
81 : Storage(std::move(Storage)) {}
82
83 ClangTidyProfiling::~ClangTidyProfiling() {
84 TG.emplace("clang-tidy", "clang-tidy checks profiling", Records);
85
86 if (!Storage.hasValue())
87 printUserFriendlyTable(llvm::errs());
88 else
89 storeProfileData();
90 }
91
92 } // namespace tidy
93 } // namespace clang
clang::tidy::ClangTidyProfiling::StorageParams::StorageParams
StorageParams()=default
clang::tidy::ClangTidyProfiling::~ClangTidyProfiling
~ClangTidyProfiling()
Definition: ClangTidyProfiling.cpp:83
clang::tidy::ClangTidyProfiling::StorageParams::StoreFilename
std::string StoreFilename
Definition: ClangTidyProfiling.h:30
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18
clang::tidy::ClangTidyProfiling::StorageParams::Timestamp
llvm::sys::TimePoint Timestamp
Definition: ClangTidyProfiling.h:28
clang::tidy::ClangTidyProfiling::Records
llvm::StringMap< llvm::TimeRecord > Records
Definition: ClangTidyProfiling.h:48
clang::tidy::ClangTidyProfiling::ClangTidyProfiling
ClangTidyProfiling()=default
ClangTidyProfiling.h