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OpenSWMM Engine
6.0.0-alpha.4
Data-oriented, plugin-extensible SWMM Engine (6.0.0-alpha.4)
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OpenSWMM Engine
6.0.0-alpha.4
Data-oriented, plugin-extensible SWMM Engine (6.0.0-alpha.4)
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Hot start file manager — in-memory representation + I/O. More...
#include <cstdint>#include <functional>#include <string>#include <vector>Go to the source code of this file.
Classes | |
| struct | openswmm::HotStartLidCellRecord |
| Node hydraulic state at hot-start save time. More... | |
| struct | openswmm::HotStartNodeRecord |
| struct | openswmm::HotStartLinkRecord |
| Link hydraulic state at hot-start save time. More... | |
| struct | openswmm::HotStartSubcatchRecord |
| Subcatchment state at hot-start save time. More... | |
| struct | openswmm::HotStartHeader |
| In-memory representation of the OPENSWMM_HS_V1 header. More... | |
| struct | openswmm::HotStartFile |
| In-memory hot start file data. More... | |
| struct | openswmm::LegacySpeciesTrailer |
| Static utility class for hot start file operations. More... | |
| class | openswmm::HotStartManager |
Namespaces | |
| namespace | openswmm |
| namespace | openswmm::runoff |
| namespace | openswmm::groundwater |
Hot start file manager — in-memory representation + I/O.
HotStartManager provides the C++ implementation of the hot start API declared in include/openswmm/engine/openswmm_hotstart.h.
V1 (legacy — no infiltration/GW state): Offset Size Field <hr> 0 16 Magic "OPENSWMM_HS_V1\0" 16 4 Version: uint32_t = 1 ... (nodes, links as before) Per-subcatch: [uint32 name_len, char name[], double runoff, double gwater] EOF-4 4 CRC32: uint32_t
V2 (Gap #54 — includes infiltration model state and GW zone state): 0 16 Magic "OPENSWMM_HS_V1\0" (same magic, version byte changes) 16 4 Version: uint32_t = 2 20 8 Timestamp (Unix seconds): int64_t 28 8 Simulation time at save (decimal days): double 36 8 Start date (OADate): double 44 8 End date (OADate): double 52 4 CRS string length: uint32_t 56 n CRS string (null-terminated) 56+n 4 Node count: uint32_t ... ... Per-node: [uint32 name_len, char name[], double depth, double head, double volume] Link count: uint32_t Per-link: [uint32 name_len, char name[], double flow, double depth, double volume] Subcatch count: uint32_t Per-subcatch V2: [uint32 name_len, char name[], double runoff, double gwater, uint32_t infil_model, double infil[6], double gw_theta, double gw_lower_depth] EOF-4 4 CRC32 of all preceding bytes: uint32_t
V15 keeps the compatible record blocks and appends a complete accepted engine-session checkpoint. It is used for qualified thermal and 2D restarts so water, clocks, thermal stores, and accepted exchange receipts restore together. V15 files restore only into the matching initialized model through SWMMEngine.
HotStartFile instances are not thread-safe. The C API wraps each handle with a raw pointer cast; callers are responsible for not sharing handles across threads.
1.13.2