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Bug 1950041 - Fix a comment r=glandium

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Differential Revision: https://phabricator.services.mozilla.com/D239295
This commit is contained in:
Paul Bone
2025-03-13 04:48:37 +00:00
parent bb136e0d12
commit a22334560f
1 changed files with 11 additions and 6 deletions
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17
memory/build/mozjemalloc.cpp
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@@ -1428,15 +1428,20 @@ struct arena_t {
// Purge some dirty pages.
//
// If this arena has more than mMaxDirty dirty pages or aForce is
// true, then purge one run of dirty pages.
// When this is called the caller has already tested ShouldStartPurge()
// (possibly on another thread asychronously) or is passing aForce = true.
// However because it's called without the lock it will recheck
// ShouldContinuePurge() (or aForce is true) before doing any work.
//
// It may purge a number of runs within a single chunk before returning. It
// will return true if there's more work to do in other chunks (aForce ||
// ShouldContinuePurge()).
//
// To release more pages from other chunks then it's best to call Purge
// in a loop, looping when it returns true.
//
// This must be called without the mLock held (it'll take the lock).
//
// To release more than a single run of pages then it's best to call Purge
// in a loop. It returns true if mNumDirty > mMaxDirty so that the
// caller knows if the loop should continue.
//
bool Purge(bool aForce = false) MOZ_EXCLUDES(mLock);
class PurgeInfo {