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0f3fd3b281
This is a part of https://reviews.llvm.org/D95835. This change is to address two problems 1) When recording stacks in origin tracking, libunwind is not async signal safe. Inside signal callbacks, we need to use fast unwind. Fast unwind needs threads 2) StackDepot used by origin tracking is not async signal safe, we set a flag per thread inside a signal callback to prevent from using it. The thread registration is similar to ASan and MSan. Related MSan changes are *98f5ea0dba*f653cda269*5a7c364343Some changes in the diff are used in the next diffs 1) The test case pthread.c is not very interesting for now. It will be extended to test origin tracking later. 2) DFsanThread::InSignalHandler will be used by origin tracking later. Reviewed-by: morehouse Differential Revision: https://reviews.llvm.org/D95963
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. ================================