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Change log

All notable changes to libcosim will be documented in this file. This includes new features, bug fixes and breaking changes. For a more detailed list of all changes, click the header links for each version.

This project adheres to Semantic Versioning

v0.9.0 – 2022-04-05

Changed
  • Removed fibers to simplify code and increase simulation performance. Concurrency must now be implemented in the master algorithm, and fixed_step_algorithm has been modified to use a thread pool. (PR#674, PR#692)
  • Performance improvements (PR#687)
Added
  • OspModelDescription.xml can be located in same folder as FMU when using proxyfmu (PR#688)
  • Option to build with FMI logging removed (PR#679)
Fixed
  • Update to proxyfmu 0.2.7

v0.8.3 – 2021-11-26

Fixed
  • Update to proxyfmu 0.2.6 (PR#676)
  • Adding builds for:
    • libcosim as static library (PR#627)
    • compiled with VS2019 (PR#660)

v0.8.2 – 2021-10-21

Fixed
  • Update to fmilibrary 2.3 (PR#659)
  • Update to proxyfmu 0.2.4 (PR#663)

v0.8.1 – 2021-09-15

Fixed
  • Using proxyfmu v0.2.3 that fixes an assumtion that proxyfmu executable being located in working directory (PR#657, proxyfmu#40)
  • Stopped-flag not reset when end-time exceeded (PR#656)

v0.8.0 – 2021-09-03

Changed
  • Replacing JVM based fmu-proxy with proxy-fmu (PR#633)
  • Replacing boost::filesystem with std::filesystem (PR#637)
Fixed
  • Memory leaks in observers (PR#647)

v0.7.1 – 2021-06-03

Added
  • improving documentation (PR#617)
Fixed
  • Compile using VS2019(PR#638)
  • Allow empty sequence of initial values in OspSystemStructure (PR#613)
  • Model description only exposed through execution (PR#603)
  • Validate initial variable values from OspSystemStructure (PR#604)
  • Real time timer improvements (PR#605)
  • Link dependencies dynamically (PR#596)
  • updating dependencies and resolving conflicts (PR#610, PR#632, PR#641)

v0.7.0 – 2020-05-29

Changed
  • Renamed library from csecore to libcosim (PR#571)
  • C API moved to separate repository libcosimc (PR#571)
  • Split model.hpp into model_description.hpp and time.hpp (PR#587)
Added
  • Provide library version in API (PR#586)
Fixed
  • Incorrect parsing of VectorSum function dimension (PR#580)
  • Arbitrary order for child elements in OspSystemStructure.xml <connections>(PR#575)

v0.6.0 – 2020-04-27

Changed
  • MSMI configuration (OspSystemStructure.xml and OspModelDescription.xml) updated
    • plugs, sockets and bonds replaced with variable groups (PR#496, PR#530, PR#537)
    • configuration for Function to FMU connections (PR#517)
    • Include FMI 2.0 unit xsd in OspModelDescription.xml (#523)
  • multi-variable connections replaced with functions (PR#518)
  • algorithm configuration moved to DefaultExperiment in .ssd (PR#447)
  • OspModelDescription file location at FMU path or configuration path (#462)
Added
  • Functions for calculations between time steps (PR#517)
  • Support setting initial values through C API (#328)
  • Increased SSP support:
    • support .ssp files (#491)
    • support individual model step-size configuration in SSP (#435)
    • support external ssv files (parameter sets) (PR#489)
    • support multiple ParameterSets in SSP (#483)
    • support multiple .ssd in an .ssp (#483)
    • support linear transformations (#451)
  • Support on/off toggling of file observer (#508)
  • Add functionality for offline model building (#114)
  • Support stateful and/or time-dependent manipulators (#203)
  • Persistent FMU cache (PR#388)
  • Update fmu-proxy client to match upstream v0.6.1 (#434)
  • Scenarios can be written in YAML (#271)
  • Allow CSV files produced by file_observer to be generated without a timestamp (PR#555)
Fixed
  • First line in output files is just zeroes (#486)
  • ssp_parser does not handle connections correctly (#479)
  • Typo causes SSP parser to ignore "Connector" elements (#274)

v0.5.1 – 2019-11-01

Changed
  • Move visitor to utility header (PR#425)
Fixed
  • Warning about string truncation in newer GCCs (#418)
  • Simulation errors are not propagated when using cse_execution_start() (#415)
  • Sum connections not parsed properly from OspSystemStructure.xml (#429)
  • True/false boolean initial values not supported in OspSystemStructure.xml (#420)
  • Fails to load FMU with empty folders in the resources directory (#440)
  • Conflicting Conan dependencies (#450)
  • Scenario does not support string values (#354)

v0.5.0 – 2019-10-03

Added
  • Multi-variable connections (PR#295)
  • Support for MSMI extension to FMUs <FMU-name>_OspModelDescription.xml, that enables mapping of FMU variables into plugs, sockets and bonds (PR#333)
  • New CSE configuration format OspSystemStructure.xml (PR#333), that enables configuration of:
    • Individual model step size
    • Plug/socket and bond connections
    • Multi-variable connections. Only sum connection included.
  • Can advance an execution to a specific point in time with cse_execution_simulate_until in C-API (PR#325)
  • Can override configured step size and start time for fixed-step algorithm in cse_ssp_fixed_step_execution_create and cse_ssp_execution_create in C-API (PR#373)
Changed
  • Must provide instance name when creating local slaves with cse_local_slave_create. (Fixing #381, PR#387)
  • cse_variable_index renamed to cse_value_reference PR#339
Fixed
  • cse_local_slave_create is broken when adding more than one instance of the same FMU (#381)
  • Memory error when moving a cosim::uri (#361)
  • Cryptic error message with ill-defined or missing osp:FixedStepMaster in SSP (#338)
  • Invalid connections in SSP are not properly handled (#336)
  • Cannot use "." as file_observer output directory (#310)

v0.4.0 – 2019-08-19

Added
  • Initial variable values configurable from SSP (PR#291)
  • Allow boolean to be set from scenario (PR#292)
  • Providing overview of modified variables (PR#296)
  • Give client code more control over logging (PR#314)
Fixed
  • Cannot run JavaFMI generated FMUs (PR#268)
  • Prevent crash when a variable is reconnected (PR#285)

v0.3.0 – 2019-06-26

Added
  • fmu-proxy integration (PR#162, PR#239)
  • introducingorchestration interface for classes that resolve model URIs of one or more specific URI schemes (PR#233)
  • logging configuration (PR#247)
  • observers can observe string and boolean variables (PR#257)
  • can set arbitraty real time factor (PR#261)
  • improved error reporting
Fixed
  • Prevent crash when FMU GUIDs include curly brackets (#244)
  • Prevent crash when FMU includes enumerated variables (#246)

v0.2.0 – 2019-03-21

Added
  • Scenario: Automatically modify any variables (except with causality local) on specified simulation time using scenario files
  • Multi threaded co-simulation
  • Introducing manipulator interface for manipulating variables
  • fixed_step_algorithm supports executing FMUs with different time steps
Fixed
  • Preventing observers from consuming increasing amount of memory

v0.1.0 – 2019-01-04

First OSP JIP partner release