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[compiler-rt][lsan][Fuchsia] Adjust lsan allocator settings #69401

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Oct 23, 2023
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[compiler-rt][lsan][Fuchsia] Adjust lsan allocator settings #69401

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15 changes: 15 additions & 0 deletions compiler-rt/lib/lsan/lsan_allocator.h
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Original file line number Diff line number Diff line change
Expand Up @@ -68,8 +68,23 @@ using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
#else
# if SANITIZER_FUCHSIA || defined(__powerpc64__)
const uptr kAllocatorSpace = ~(uptr)0;
# if SANITIZER_RISCV64
// See the comments in compiler-rt/lib/asan/asan_allocator.h for why these
// values were chosen.
const uptr kAllocatorSize = UINT64_C(1) << 33; // 8GB
using LSanSizeClassMap = SizeClassMap</*kNumBits=*/2,
/*kMinSizeLog=*/5,
/*kMidSizeLog=*/8,
/*kMaxSizeLog=*/18,
/*kNumCachedHintT=*/8,
/*kMaxBytesCachedLog=*/10>;
static_assert(LSanSizeClassMap::kNumClassesRounded <= 32,
"32 size classes is the optimal number to ensure tests run "
"effieciently on Fuchsia.");
# else
const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
using LSanSizeClassMap = DefaultSizeClassMap;
# endif
# elif SANITIZER_RISCV64
const uptr kAllocatorSpace = ~(uptr)0;
const uptr kAllocatorSize = 0x2000000000ULL; // 128G.
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