1 //===- BlockIndexer.cpp - FDR Block Indexing VIsitor ----------------------===//
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 // An implementation of the RecordVisitor which generates a mapping between a
11 // thread and a range of records representing a block.
12 //
13 //===----------------------------------------------------------------------===//
14 #include "llvm/XRay/BlockIndexer.h"
15 
16 namespace llvm {
17 namespace xray {
18 
19 Error BlockIndexer::visit(BufferExtents &) { return Error::success(); }
20 
21 Error BlockIndexer::visit(WallclockRecord &R) {
22   CurrentBlock.Records.push_back(&R);
23   CurrentBlock.WallclockTime = &R;
24   return Error::success();
25 }
26 
27 Error BlockIndexer::visit(NewCPUIDRecord &R) {
28   CurrentBlock.Records.push_back(&R);
29   return Error::success();
30 }
31 
32 Error BlockIndexer::visit(TSCWrapRecord &R) {
33   CurrentBlock.Records.push_back(&R);
34   return Error::success();
35 }
36 
37 Error BlockIndexer::visit(CustomEventRecord &R) {
38   CurrentBlock.Records.push_back(&R);
39   return Error::success();
40 }
41 
42 Error BlockIndexer::visit(CustomEventRecordV5 &R) {
43   CurrentBlock.Records.push_back(&R);
44   return Error::success();
45 }
46 
47 Error BlockIndexer::visit(TypedEventRecord &R) {
48   CurrentBlock.Records.push_back(&R);
49   return Error::success();
50 }
51 
52 Error BlockIndexer::visit(CallArgRecord &R) {
53   CurrentBlock.Records.push_back(&R);
54   return Error::success();
55 }
56 
57 Error BlockIndexer::visit(PIDRecord &R) {
58   CurrentBlock.ProcessID = R.pid();
59   CurrentBlock.Records.push_back(&R);
60   return Error::success();
61 }
62 
63 Error BlockIndexer::visit(NewBufferRecord &R) {
64   if (!CurrentBlock.Records.empty())
65     if (auto E = flush())
66       return E;
67 
68   CurrentBlock.ThreadID = R.tid();
69   CurrentBlock.Records.push_back(&R);
70   return Error::success();
71 }
72 
73 Error BlockIndexer::visit(EndBufferRecord &R) {
74   CurrentBlock.Records.push_back(&R);
75   return Error::success();
76 }
77 
78 Error BlockIndexer::visit(FunctionRecord &R) {
79   CurrentBlock.Records.push_back(&R);
80   return Error::success();
81 }
82 
83 Error BlockIndexer::flush() {
84   Index::iterator It;
85   std::tie(It, std::ignore) =
86       Indices.insert({{CurrentBlock.ProcessID, CurrentBlock.ThreadID}, {}});
87   It->second.push_back({CurrentBlock.ProcessID, CurrentBlock.ThreadID,
88                         CurrentBlock.WallclockTime,
89                         std::move(CurrentBlock.Records)});
90   CurrentBlock.ProcessID = 0;
91   CurrentBlock.ThreadID = 0;
92   CurrentBlock.Records = {};
93   CurrentBlock.WallclockTime = nullptr;
94   return Error::success();
95 }
96 
97 } // namespace xray
98 } // namespace llvm
99