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runtime: clarify SetFinalizer docs
Fixes #24480 Change-Id: I7db721fb71a17f07472ec7f216478e7887435639 Reviewed-on: https://go-review.googlesource.com/122557 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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@ -267,8 +267,8 @@ func runfinq() {
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// is not guaranteed to run, because there is no ordering that
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// respects the dependencies.
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//
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// The finalizer for obj is scheduled to run at some arbitrary time after
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// obj becomes unreachable.
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// The finalizer is scheduled to run at some arbitrary time after the
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// program can no longer reach the object to which obj points.
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// There is no guarantee that finalizers will run before a program exits,
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// so typically they are useful only for releasing non-memory resources
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// associated with an object during a long-running program.
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