diff options
| author | Dean Michael Berris <dberris@google.com> | 2017-02-17 01:47:16 +0000 |
|---|---|---|
| committer | Dean Michael Berris <dberris@google.com> | 2017-02-17 01:47:16 +0000 |
| commit | 73d4ebd6202e0b477b4699617c6a6aaa71c490bc (patch) | |
| tree | 0ba6994b835d6eeebcb5e05651ec0c925f205a54 /tools/llvm-xray | |
| parent | 58318dec58edc46bb54e494dc2e5412c90a1d5bf (diff) | |
[XRAY] [x86_64] Adding a Flight Data filetype reader to the llvm-xray Trace implementation.
Summary:
The file type packs function trace data onto disk from potentially multiple
threads that are aggregated and flushed during the course of an instrumented
program's runtime.
It is named FDR mode or Flight Data recorder as an analogy to plane
blackboxes, which instrument a running system without access to IO.
The writer code is defined in compiler-rt in xray_fdr_logging.h/cc
Reviewers: rSerge, kcc, dberris
Reviewed By: dberris
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29697
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295397 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-xray')
| -rw-r--r-- | tools/llvm-xray/xray-converter.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/llvm-xray/xray-converter.cc b/tools/llvm-xray/xray-converter.cc index 96850f032bf..2583ec95149 100644 --- a/tools/llvm-xray/xray-converter.cc +++ b/tools/llvm-xray/xray-converter.cc @@ -118,7 +118,9 @@ void TraceConverter::exportAsRAWv1(const Trace &Records, raw_ostream &OS) { // format. for (const auto &R : Records) { Writer.write(R.RecordType); - Writer.write(R.CPU); + // The on disk naive raw format uses 8 bit CPUs, but the record has 16. + // There's no choice but truncation. + Writer.write(static_cast<uint8_t>(R.CPU)); switch (R.Type) { case RecordTypes::ENTER: Writer.write(uint8_t{0}); |