llvm-project/compiler-rt
Dean Michael Berris 35824efb45 [XRay][compiler-rt] Add APIs for processing logs in memory
Summary:
This change adds APIs to allow logging implementations to provide a
function for iterating through in-memory buffers (if they hold in-memory
buffers) and a way for users to generically deal with these buffers
in-process. These APIs are:

  - __xray_log_set_buffer_iterator(...) and
    __xray_log_remove_buffer_iterator(): installs and removes an
    iterator function that takes an XRayBuffer and yields the next one.

  - __xray_log_process_buffers(...): takes a function pointer that can
    take a mode identifier (string) and an XRayBuffer to process this
    data as they see fit.

The intent is to have the FDR mode implementation's buffers be
available through this `__xray_log_process_buffers(...)` API, so that
they can be streamed from memory instead of flushed to disk (useful for
getting the data to a network, or doing in-process analysis).

Basic mode logging will not support this mechanism as it's designed to
write the data mostly to disk.

Future implementations will may depend on this API as well, to allow for
programmatically working through the XRay buffers exposed to the
users in some fashion.

Reviewers: eizan, kpw, pelikan

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D43495

llvm-svn: 326866
2018-03-07 02:45:14 +00:00
..
cmake OpenBSD UBsan support, cmake part 2018-03-03 11:48:54 +00:00
docs [sanitizers] Make it possible to XFAIL on the effective target, not just the default. 2016-08-09 11:50:53 +00:00
include [XRay][compiler-rt] Add APIs for processing logs in memory 2018-03-07 02:45:14 +00:00
lib [XRay][compiler-rt] Add APIs for processing logs in memory 2018-03-07 02:45:14 +00:00
test [XRay][compiler-rt] Add APIs for processing logs in memory 2018-03-07 02:45:14 +00:00
unittests Allow compiler-rt test targets to work with multi-config CMake generators 2017-11-13 12:57:54 +00:00
utils Remove more references to ptrace_pt_{g,s}et_sigmask 2018-03-03 18:41:38 +00:00
www
.arcconfig [compiler-rt] Set up .arcconfig to point to new Diffusion CRT repository 2017-12-06 20:55:32 +00:00
.gitignore Add .pyc files to .gitignore to compiler-rt 2017-07-24 21:51:12 +00:00
CMakeLists.txt [CMake] Support runtimes and monorepo layouts when looking for libcxx 2017-12-12 01:20:52 +00:00
CODE_OWNERS.TXT [sanitizers] remove earthdok@ from owners 2016-05-18 18:52:18 +00:00
CREDITS.TXT
LICENSE.TXT Update copyright year to 2016. 2016-03-30 22:38:50 +00:00
README.txt

README.txt

Compiler-RT
================================

This directory and its subdirectories contain source code for the compiler
support routines.

Compiler-RT is open source software. You may freely distribute it under the
terms of the license agreement found in LICENSE.txt.

================================