Threads and Semaphores: 4.3 Using Multiple Threads: Handling Errors in a Thread

GEOS SDK TechDocs

4.2 Managing Priority Values

4.4 When a Thread Is Finished

ThreadHandleException(), ThreadException

Some threads in GEOS will want to handle certain errors in special ways. The errors a particular thread can intercept and handle are listed in an enumerated type called ThreadException , the elements of which are shown below:

• TE_DIVIDE_BY_ZERO
• TE_OVERFLOW
• TE_BOUND
• TE_FPU_EXCEPTION
• TE_SINGLE_STEP
• TE_BREAKPOINT

A thread can handle a particular exception by setting up a special handler routine and calling ThreadHandleException() when one of these exceptions occurs. This is useful if a number of objects are run by the same thread and all should handle a particular exception in the same way; the routine can be thread-specific rather than object-specific. ThreadHandleException() must be passed the thread's handle, the exception type, and a pointer to the handler routine's entry point.

GEOS SDK TechDocs

4.2 Managing Priority Values

4.4 When a Thread Is Finished