Generating and Calling Reentrant Code
By default, the generated code createsstatic
variables for variables whose size exceeds the maximum stack usage value, stored in the configuration object settingStackUsageMax
. The data instatic
variables persists between function calls. Similarly, the data for MATLAB®globals and persistents exists between function calls. Therefore, if your main function executes the generated code in multiple threads, indeterminate race conditions can occur.
To generate code more suitable for simultaneous execution in multiple threads, you can use theMultiInstanceCode
configuration option. When you use this option, the generated code wraps data that can exceed the local thread storage into a structure definition, so that you can allocate thread-safe memory for that structure individually. Similarly, the code generator wraps persistent and global data into its own memory structure. When this memory should not be shared, you can allocate individual memory for the data structures used by a thread.
Topics
Reentrant Code Basics
Reentrant code is a reusable programming routine that multiple programs can use simultaneously.
API for Generated Reusable Code
Use generated reusable code.
Generate reentrant code in theMATLAB Coder™app or at the command line.
Call Reentrant Code in a Single-Threaded Environment
Use generated reentrant code in a single-threaded environment.
Call Reentrant Code in a Multithreaded Environment
Use generated reentrant code in a multithreaded environment.
Workflows
Generate Reentrant C Code from MATLAB Code
Generate reusable, reentrant C code.
Call Reentrant Code with No Persistent or Global Data (UNIX Only)
Generate reentrant code that uses POSIX thread (pthread) libraries.
Call Reentrant Code — Multithreaded with Persistent Data (Windows Only)
Generate reentrant code that uses libraries that are specific to Windows®platforms.
Call Reentrant Code — Multithreaded with Persistent Data (UNIX Only)
Generate reentrant code that uses POSIX thread (pthread) libraries.