forked from OSchip/llvm-project
52f0130216
Summary: This CL introduces the 32 & 64-bit primary allocators, and associated Local Cache. While the general idea is mostly similar to what exists in sanitizer_common, it departs from the original code somewhat significantly: - the 64-bit primary no longer uses a free array at the end of a region but uses batches of free blocks in region 0, allowing for a convergence with the 32-bit primary behavior; - as a result, there is only one (templated) local cache type for both primary allocators, and memory reclaiming can be implemented similarly for the 32-bit & 64-bit platforms; - 64-bit primary regions are handled a bit differently: we do not reserve 4TB of memory that we split, but reserve `NumClasses * 2^RegionSizeLog`, each region being offseted by a random number of pages from its computed base. A side effect of this is that the 64-bit primary works on 32-bit platform (I don't think we want to encourage it but it's an interesting side effect); Reviewers: vitalybuka, eugenis, morehouse, hctim Reviewed By: morehouse Subscribers: srhines, mgorny, delcypher, jfb, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D61745 llvm-svn: 361159 |
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| .. | ||
| BlocksRuntime | ||
| asan | ||
| builtins | ||
| cfi | ||
| crt | ||
| dfsan | ||
| fuzzer | ||
| gwp_asan | ||
| hwasan | ||
| interception | ||
| lsan | ||
| msan | ||
| profile | ||
| safestack | ||
| sanitizer_common | ||
| scudo | ||
| stats | ||
| tsan | ||
| ubsan | ||
| ubsan_minimal | ||
| xray | ||
| CMakeLists.txt | ||