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Bug 1857841 - pt 2. Remove obsolete comment r=glandium

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Differential Revision: https://phabricator.services.mozilla.com/D200413
This commit is contained in:
Paul Bone 2024-03-19 01:42:41 +00:00
parent 4189799792
commit 4ca2947b0f
1 changed files with 0 additions and 10 deletions
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10
memory/build/mozjemalloc.cpp
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@ -2694,16 +2694,6 @@ bool arena_t::SplitRun(arena_run_t* aRun, size_t aSize, bool aLarge,
void arena_t::InitChunk(arena_chunk_t* aChunk) {
size_t i;
// WARNING: The following relies on !aZeroed meaning "used to be an arena
// chunk".
// When the chunk we're initializating as an arena chunk is zeroed, we
// mark all runs are decommitted and zeroed.
// When it is not, which we can assume means it's a recycled arena chunk,
// all it can contain is an arena chunk header (which we're overwriting),
// and zeroed or poisoned memory (because a recycled arena chunk will
// have been emptied before being recycled). In that case, we can get
// away with reusing the chunk as-is, marking all runs as madvised.
size_t flags = CHUNK_MAP_DECOMMITTED | CHUNK_MAP_ZEROED;
mStats.mapped += kChunkSize;