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| author | Florian Mayer <fmayer@google.com> | 2024-02-22 12:37:06 -0800 |
|---|---|---|
| committer | Florian Mayer <fmayer@google.com> | 2024-02-22 12:37:06 -0800 |
| commit | af8afe08ee20a04b2ccb363cac66aa02cfaecd02 (patch) | |
| tree | 2f76d8236c2208f46585272f8c11ebbcef7a8b7a | |
| parent | 751cd2658bff08fd07cdb2eb022b473b35cbf2b8 (diff) | |
| download | llvm-af8afe08ee20a04b2ccb363cac66aa02cfaecd02.zip llvm-af8afe08ee20a04b2ccb363cac66aa02cfaecd02.tar.gz llvm-af8afe08ee20a04b2ccb363cac66aa02cfaecd02.tar.bz2 | |
update message
Created using spr 1.3.4
| -rw-r--r-- | compiler-rt/lib/scudo/standalone/combined.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler-rt/lib/scudo/standalone/combined.h b/compiler-rt/lib/scudo/standalone/combined.h index 479e49c..24ad979 100644 --- a/compiler-rt/lib/scudo/standalone/combined.h +++ b/compiler-rt/lib/scudo/standalone/combined.h @@ -1600,6 +1600,9 @@ private: } void swapOutRingBuffer(AllocationRingBuffer *NewRB) { + // To allow resizeRingBuffer to be called in a multi-threaded context by apps, + // we do not actually unmap, but only madvise(DONTNEED) the pages. That way, + // straggler threads will not crash. AllocationRingBuffer *PrevRB = reinterpret_cast<AllocationRingBuffer *>( atomic_exchange(&RingBufferAddress, reinterpret_cast<uptr>(NewRB), memory_order_acq_rel)); |