perf: optimised marker operations removing heap allocations #107
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Overview
Performance fix which avoids heap allocation when setting a new marker.
This change is a performance optimisation without any changes in functionality.
Context
Buffers can be wound back to a previous point using markers.
The markers remember and reset internal tracking state of the buffer, making easy to revert back to a previous condition after an error.
Saving a marker previously involved allocating memory for the table name.
We now internally only store the length of the table name instead.
N.B.: