forked from OSchip/llvm-project
f5aaa999b9
Summary: This fixes two threading issues in the logging code. The access to the mask and options flags had data races when we were trying to enable/disable logging while another thread was writing to the log. Since we can log from almost any context, and we want it to be fast, so I avoided locking primitives and used atomic variables instead. I have also removed the (unused) setters for the mask and flags to make sure that the only way to set them is through the enable/disable channel functions. I also add tests, which when run under tsan, verify that the use cases like "doing an LLDB_LOGV while another thread disables logging" are data-race-free. Reviewers: zturner, clayborg Subscribers: lldb-commits Differential Revision: https://reviews.llvm.org/D30702 llvm-svn: 297368 |
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