|author||Chuck Jazdzewski <firstname.lastname@example.org>||Wed May 04 12:01:08 2022 -0700|
|committer||Chuck Jazdzewski <email@example.com>||Wed May 04 12:09:43 2022 -0700|
Fix memory leak when observing derived state objects When observing derived state objects, if the recompose snapshot changed id it caused the derived state objects no longer observed by composition to be retained by the recompose scope, causing them to leak. The snapshot id would change if the read is the first time a derived state object is read in the snapshot. To detect when a derived state object is no longer necessary a token value is used to record when the derived state was added into the composition. This token was the current snapshot id. However, since the id is not static through-out composition, this could cause the notification to be skipped. This change fixes the token to be the snapshot id at the beginning of composition and, after that, ignores the snapshot id. This means the token is consistent through-out the same composition allowing unused derived object to be detected. Fixes 230168389 Test: new test, ./gradlew :compose:r:r:tDUT Change-Id: I877c826764592a7e424667d3e2b677d385cf0b7f
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