ruleguard: introduce reusable runner state #415
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This allows more memory reuse between ruleguard engine executions.
Usually, app only needs one Engine object, which doesn't require
any synchronization. For optimal execution, there should be
N `RunnerState` objects, where N is number of concurrently executing
goroutines that use same `Engine`.
name old time/op new time/op delta
EngineRun-8 231µs ± 1% 197µs ± 0% -14.72% (p=0.000 n=9+10)
Issue412-8 205µs ± 1% 196µs ± 1% -4.46% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
EngineRun-8 23.5kB ± 0% 9.1kB ± 0% -61.26% (p=0.000 n=8+8)
Issue412-8 9.54kB ± 0% 1.81kB ± 0% -81.03% (p=0.000 n=8+7)
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This allows more memory reuse between ruleguard engine executions.
Usually, app only needs one Engine object, which doesn't require any synchronization. For optimal execution, there should be N
RunnerStateobjects, where N is number of concurrently executing goroutines that use sameEngine.