Safety-certified tools Tools for Automotive Applications C-STAT Static analysis C-RUN Runtime analysis Debugging and trace probes
While using a multithreaded environment there is a need to use multithread support in the standard library, (for example calls to malloc()).
Multi thread support can be enabled in the standard library. Read the chapter: 'Enabling Multithread Support' in the Development Guide.
After implementing the system/file lock interface, it is possible to verify that the system lock functions are called when calling for example malloc/free. Just set breakpoints in the *Mtxinit, *Mtxlock and *Mtxunlock functions, and step over a call to malloc/free.
If using an RTOS, the first thing to consider is if there is a real reason to implement the multithread support.
Many RTOS vendors have already done that kind of implementation, for example:
When using the combination of a multi-thread RTOS and C++ the compiler option
needs to be used. In the IDE, the option can be specified in Project -> Options -> C/C++ Compiler -> Extra Options.
The reason is that C++ constructors/destructors could be called from several RTOS threads.
If using IAR Embedded Workbench for ARM version 6.60 and newer enable the linker option:
This can be done via the IDE option: Project -> Options -> General Options -> Library Configuration -> Enable thread support in the library.
If using versions 6.40 or 6.50 add a number of linker options (--redirect) to Project -> Options -> Linker -> Extra Options to enable multithread support.
The --redirect options are documented in the file
Note that these options need to be added, even when using an RTOS implementation.
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