[mono][interp] Keep delegate alive during invocation#100832
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BrzVlad merged 1 commit intodotnet:mainfrom Apr 10, 2024
Merged
[mono][interp] Keep delegate alive during invocation#100832BrzVlad merged 1 commit intodotnet:mainfrom
BrzVlad merged 1 commit intodotnet:mainfrom
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When invoking a delegate, we were overwritting the stack slot containing the delegate object reference. In the case of invoking a delegate for a dynamic method, we were running into issues when the delegate object is collected while the method is executed because the method code is also discarded.
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Tagging subscribers to this area: @BrzVlad, @kotlarmilos |
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Is it bad that for long-running method bodies, we never null out the ref_slot_offset after a call? It potentially means we leak a delegate instance for a while, but I can't imagine a realistic scenario where that would cause a program to meaningfully degrade just from one delegate surviving GC during a loop. Could break synthetic GC tests maybe. |
kg
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Apr 9, 2024
kg
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Apr 9, 2024
| @@ -4164,6 +4164,9 @@ mono_interp_exec_method (InterpFrame *frame, ThreadContext *context, FrameClause | |||
| } | |||
| cmethod = del_imethod; | |||
| if (!is_multicast) { | |||
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does multicast not need this deathgrip var because multicast invokes are done by a helper method that has 'this' on the stack?
This was referenced Apr 9, 2024
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When invoking a delegate, we were overwritting the stack slot containing the delegate object reference. In the case of invoking a delegate for a dynamic method, we were running into issues when the delegate object is collected while the method is executed because the method code is also discarded.
This was referenced May 3, 2024
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When invoking a delegate, we were overwritting the stack slot containing the delegate object reference. In the case of invoking a delegate for a dynamic method, we were running into issues when the delegate object is collected while the method is executed because the method code is also discarded.