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path: root/llvm/lib/XRay/FDRTraceWriter.cpp
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* [XRay] Write the TSC along with CPUIDDean Michael Berris2018-09-111-1/+1
| | | | | | | | Fixes builds in non-little-endian systems. This is a follow-up to D51911. llvm-svn: 341909
* [XRay] Fix FunctionRecord serializationDean Michael Berris2018-08-311-30/+9
| | | | | | | | | | | This change makes the writer implementation more consistent with the way fields are written down to avoid assumptions on bitfield order and padding. We also fix an inconsistency between the type returned by the `delta()` accessor to match the data member it's returning. This is a follow-up to D51289 and D51210. llvm-svn: 341230
* [XRay] Make the FDRTraceWriter Endian-awareDean Michael Berris2018-08-311-25/+34
| | | | | | | | | Before this patch, the FDRTraceWriter would not take endianness into account when writing data into the output stream. This is a follow-up to D51289 and D51210. llvm-svn: 341223
* [XRay] Attempt to fix failure on WindowsDean Michael Berris2018-08-311-6/+4
| | | | | | | | Original version of the code relied on implementation-defined order of bitfields. Follow-up on D51210. llvm-svn: 341194
* [XRay] Help gcc disambiguate namesDean Michael Berris2018-08-301-3/+4
| | | | | | Follow-up to D51210. llvm-svn: 341042
* [XRay] Move out template and use perfect forwardingDean Michael Berris2018-08-301-2/+3
| | | | | | Follow up to D51210. llvm-svn: 341032
* [XRay] Remove attribute packedDean Michael Berris2018-08-301-2/+2
| | | | | | Followup to D51210. llvm-svn: 341030
* [XRay] FDRTraceWriter and FDR Trace LoadingDean Michael Berris2018-08-301-0/+145
Summary: This is the first step in the larger refactoring and reduction of D50441. This step in the process does the following: - Introduces more granular types of `Record`s representing the many kinds of records written/read by the Flight Data Recorder (FDR) mode `Trace` loading function(s). - Introduces an abstract `RecordVisitor` type meant to handle the processing of the various `Record` derived types. This `RecordVisitor` has two implementations in this patch: `RecordInitializer` and `FDRTraceWriter`. - We also introduce a convenience interface for building a collection of `Record` instances called a `LogBuilder`. This allows us to generate sequences of `Record` instances manually (used in unit tests but useful otherwise). - The`FDRTraceWriter` class implements the `RecordVisitor` interface and handles the writing of metadata records to a `raw_ostream`. We demonstrate that in the unit test, we can generate in-memory FDR mode traces using the specific `Record` derived types, which we load through the `loadTrace(...)` function yielding valid `Trace` objects. This patch introduces the required types and concepts for us to start replacing the logic implemented in the `loadFDRLog` function to use the more granular types. In subsequent patches, we will introduce more visitor implementations which isolate the verification, printing, indexing, production/consumption, and finally the conversion of the FDR mode logs. The overarching goal of these changes is to make handling FDR mode logs better tested, more understandable, more extensible, and more systematic. This will also allow us to better represent the execution trace, as we improve the fidelity of the events we represent in an XRay `Trace` object, which we intend to do after FDR mode log processing is in better shape. Reviewers: eizan Reviewed By: eizan Subscribers: mgorny, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D51210 llvm-svn: 341029
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