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[scudo] Add last release time info to getStats #166456

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[scudo] Add last release time info to getStats #166456

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12 changes: 11 additions & 1 deletion compiler-rt/lib/scudo/standalone/primary64.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1146,17 +1146,27 @@ void SizeClassAllocator64<Config>::getStats(ScopedString *Str, uptr ClassId,
BytesInFreeList - Region->ReleaseInfo.BytesInFreeListAtLastCheckpoint;
}
const uptr TotalChunks = Region->MemMapInfo.AllocatedUser / BlockSize;
const s32 IntervalMs = atomic_load_relaxed(&ReleaseToOsIntervalMs);
const u64 IntervalNs = static_cast<u64>(IntervalMs) * 1000000;
const u64 CurTimeNs = getMonotonicTime();
const u64 DiffSinceLastReleaseNs =
CurTimeNs - Region->ReleaseInfo.LastReleaseAtNs;

Str->append(
"%s %02zu (%6zu): mapped: %6zuK popped: %7zu pushed: %7zu "
"inuse: %6zu total: %6zu releases attempted: %6zu last "
"released: %6zuK latest pushed bytes: %6zuK region: 0x%zx "
"(0x%zx)\n",
"(0x%zx) ",
Region->Exhausted ? "E" : " ", ClassId, getSizeByClassId(ClassId),
Region->MemMapInfo.MappedUser >> 10, Region->FreeListInfo.PoppedBlocks,
Region->FreeListInfo.PushedBlocks, InUseBlocks, TotalChunks,
Region->ReleaseInfo.NumReleasesAttempted,
Region->ReleaseInfo.LastReleasedBytes >> 10, RegionPushedBytesDelta >> 10,
Region->RegionBeg, getRegionBaseByClassId(ClassId));
if (DiffSinceLastReleaseNs > IntervalNs)
Str->append("Last page release > ReleaseToOsInterval\n");
else
Str->append("Last page release <= ReleaseToOsInterval\n");
}

template <typename Config>
Expand Down