Commit Graph

5 Commits

Author SHA1 Message Date
Dmitry Vyukov 0da172b176 sanitizer_common: add thread safety annotations
Enable clang Thread Safety Analysis for sanitizers:
https://clang.llvm.org/docs/ThreadSafetyAnalysis.html

Thread Safety Analysis can detect inconsistent locking,
deadlocks and data races. Without GUARDED_BY annotations
it has limited value. But this does all the heavy lifting
to enable analysis and allows to add GUARDED_BY incrementally.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D105716
2021-07-12 11:46:49 +02:00
Jeroen Dobbelaere d7e71b5db8 [compiler-rt santizer] Use clock_gettime instead of timespec_get
On RH66, timespec_get is not available. Use clock_gettime instead.

This problem was introduced with D87120

Reviewed By: tejohnson

Differential Revision: https://reviews.llvm.org/D91687
2020-12-08 10:10:17 -08:00
Teresa Johnson a75b2e87e6 [MemProf] Add interface to dump profile
Add an interface so that the profile can be dumped on demand.

Differential Revision: https://reviews.llvm.org/D91768
2020-11-19 10:21:53 -08:00
Petr Hosek ed4fbe6d9c [CMake] Replace ctime with time.h in memprof
Part of D88922
2020-10-30 20:02:53 -07:00
Teresa Johnson 3d4bba302d [MemProf] Memory profiling runtime support
See RFC for background:
http://lists.llvm.org/pipermail/llvm-dev/2020-June/142744.html

Follow on companion to the clang/llvm instrumentation support in D85948
and committed earlier.

This patch adds the compiler-rt runtime support for the memory
profiling.

Note that much of this support was cloned from asan (and then greatly
simplified and renamed). For example the interactions with the
sanitizer_common allocators, error handling, interception, etc.

The bulk of the memory profiling specific code can be found in the
MemInfoBlock, MemInfoBlockCache, and related classes defined and used
in memprof_allocator.cpp.

For now, the memory profile is dumped to text (stderr by default, but
honors the sanitizer_common log_path flag). It is dumped in either a
default verbose format, or an optional terse format.

This patch also adds a set of tests for the core functionality.

Differential Revision: https://reviews.llvm.org/D87120
2020-10-16 09:47:02 -07:00