keep particle overallocation on restore state

[PhilipDeegan]

keep initial capacity during save/restore state in solver ppc

Summary by CodeRabbit

• New Features

  • Introduced a method for efficiently adding particle data to maps, enhancing the management of particle states.
  • Improved handling of particle ranges during updates, optimizing transfers between ghost and domain arrays.

• Bug Fixes

  • Refined logic for determining particles entering the domain from the ghost layer, improving overall efficiency.

• Documentation

  • Updated comments for better clarity on operations related to domain and ghost particles.

[coderabbitai[bot]]

📝 Walkthrough

📝 Walkthrough

## Walkthrough The changes introduce a new static method `add_to` in the `SolverPPC` class to facilitate adding `ParticleArray` objects to a map, enhancing the management of particle states during save operations. Additionally, modifications in the `IonUpdater` class improve the handling of particle ranges and optimize the transfer of particles between ghost and domain arrays. These updates include refining lambda functions and enhancing code comments for clarity, while maintaining the overall structure and functionality of the classes. ## Changes | File Path | Change Summary | |---------------------------------------------|-------------------------------------------------------------------------------------------------| | `src/amr/solvers/solver_ppc.hpp` | Added static method `add_to(Map&, std::string const&, ParticleArray const&)` in `SolverPPC`. Modified `saveState_` to utilize `add_to`. | | `src/core/numerics/ion_updater/ion_updater.hpp` | Changed `inDomainBox` lambda parameter type from `auto&` to `auto&&`. Refined `updateAndDepositAll_` method to improve particle transfer logic. Updated comments for clarity. | ## Sequence Diagram(s) ```mermaid sequenceDiagram participant SolverPPC participant ParticleArray participant Map SolverPPC->>Map: add_to(key, ParticleArray) Map-->>SolverPPC: check if key exists alt Key does not exist Map->>Map: initialize entry with empty ParticleArray end Map->>Map: reserve capacity for new ParticleArray Map->>Map: replace contents with ParticleArray SolverPPC->>SolverPPC: saveState_ updates maps ```

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[PhilipDeegan]

fillIonghosts still under 2% since reverting to export particles