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Use dynamic memory allocation for model block instantiation

Description

Specify whether generated code uses the operator new, during model object registration, to instantiate objects for referenced models configured with a C++ class interface.

Category: Code Generation > Interface

Settings

Default: off

On

Generates code that uses dynamic memory allocation to instantiate objects for referenced models configured with a C++ class interface. Specifically, during instantiation of an object for the top model in a model reference hierarchy, the generated code uses new to instantiate objects for referenced models.

Selecting this option frees a parent model from having to maintain information about referenced models beyond its direct children.

  • If you select this option, be aware that a bad_alloc exception might be thrown, per the C++ standard, if an out-of-memory error occurs during the use of new. You must provide code to catch and process the bad_alloc exception in case an out-of-memory error occurs for a new call during construction of a top model object.

  • If Use dynamic memory allocation for model block instantiation is selected and the base model contains a Model block, the build process might generate copy constructor and assignment operator functions in the private section of the model class. The purpose of the functions is to prevent pointer members within the model class from being copied by other code. For more information, see Model Class Copy Constructor and Assignment Operator.

Off

Does not generate code that uses new to instantiate referenced model objects.

Clearing this option means that a parent model maintains information about its referenced models, including its direct and indirect children.

Dependencies

  • This parameter appears only for ERT-based targets with Language set to C++ and Code interface packaging set to C++ class.

  • This parameter requires an Embedded Coder® license when generating code.

Command-Line Information

Parameter: UseOperatorNewForModelRefRegistration
Type: character vector
Value: 'on' | 'off'
Default: 'off'

Recommended Settings

ApplicationSetting
DebuggingNo impact
TraceabilityNo impact
EfficiencyOn
Safety precaution

No recommendation

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