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* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
* [sanitizer] Reduce stack depot size on Android.Evgeniy Stepanov2019-01-041-1/+1
| | | | | | | | | | | | | | | | Summary: The default setting kTabSizeLog=20 results in an 8Mb global hash table, almost all of it in private pages. That is not a sane setting in a mobile, system-wide use case: with ~150 concurrent processes stack depot will account for more than 1Gb of RAM. Reviewers: kcc, pcc Subscribers: srhines, kubamracek, llvm-commits Differential Revision: https://reviews.llvm.org/D56333 llvm-svn: 350443
* [sanitizer] Fix Clang-tidy modernize-use-nullptr warnings in ↵Kostya Serebryany2015-09-291-3/+4
| | | | | | lib/sanitizer_common headers, unify closing inclusion guards. Patch by Eugene Zelenko llvm-svn: 248816
* Change StackDepot interface to use StackTrace more extensivelyAlexey Samsonov2014-10-261-6/+3
| | | | llvm-svn: 220637
* [Sanitizer] Make StackTrace a lightweight reference to array of PCs, andAlexey Samsonov2014-10-261-1/+3
| | | | | | | | | | | | | | | | | | | | | | introduce a BufferedStackTrace class, which owns this array. Summary: This change splits __sanitizer::StackTrace class into a lightweight __sanitizer::StackTrace, which doesn't own array of PCs, and BufferedStackTrace, which owns it. This would allow us to simplify the interface of StackDepot, and eventually merge __sanitizer::StackTrace with __tsan::StackTrace. Test Plan: regression test suite. Reviewers: kcc, dvyukov Reviewed By: dvyukov Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D5985 llvm-svn: 220635
* [msan] Make origin tracking fork-safe.Evgeniy Stepanov2014-09-041-0/+3
| | | | | | | | | Chained origins make plain memory stores async-signal-unsafe. We already disable it inside signal handlers. This change grabs all origin-related locks before fork() and releases them after fork() to avoid a deadlock in the child process. llvm-svn: 217140
* [msan] Chained origins re-design.Evgeniy Stepanov2014-05-211-11/+18
| | | | | | | | | | | | | | | | | Generalize StackDepot and create a new specialized instance of it to efficiently (i.e. without duplicating stack trace data) store the origin history tree. This reduces memory usage for chained origins roughly by an order of magnitude. Most importantly, this new design allows us to put two limits on stored history data (exposed in MSAN_OPTIONS) that help avoid exponential growth in used memory on certain workloads. See comments in lib/msan/msan_origin.h for more details. llvm-svn: 209284
* [sanitizer] fix code styleAlexey Samsonov2013-08-281-3/+3
| | | | llvm-svn: 189474
* [sanitizer] Add a fast version of StackDepotGet() for use in LSan.Sergey Matveev2013-08-261-0/+26
| | | | | | | Add a class that holds a snapshot of the StackDepot optimized for querying by ID. This allows us to speed up LSan dramatically. llvm-svn: 189217
* [sanitizer] Further split private and public sanitizer headers.Evgeniy Stepanov2013-01-301-1/+1
| | | | | | And make msan_interface.h C-compatible. llvm-svn: 173928
* [asan] asan_allocator2: by default use the StackDepot to store the stack ↵Kostya Serebryany2012-12-261-0/+7
| | | | | | traces instead of storing them in the redzones llvm-svn: 171099
* tsan: use stack depot to describe heap blocksDmitry Vyukov2012-08-301-2/+2
| | | | llvm-svn: 162902
* asan/tsan: first version of "stack depot"Dmitry Vyukov2012-08-301-0/+29
llvm-svn: 162897
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