forked from Imagelibrary/rtems
d50acdbb6c
Add a local context structure to the SMP lock API for acquire and release pairs. This context can be used to store the ISR level and profiling information. It may be later used to enable more sophisticated lock algorithms, e.g. MCS locks. There is only one lock that cannot be used with a local context. This is the per-CPU lock since here we would have to transfer the local context through a context switch which is very complicated.
This directory contains the RTEMS Classic API Timing Test Suite. The tests in this directory are used to measure the execution time of RTEMS directive and some critical internal functions. The results of these test are useful for comparison of RTEMS performance + between versions of RTEMS + between different boards + across different architectures These tests attempt to benchmark RTEMS as the user would. They measure the execution time for a directive (under various circumstances) from the time RTEMS is entered until it is executed. Where possible, the time is the average of at least 100 invocations of the directive. The accuracy of the times reported by these benchmarks is very dependent on the resolution of the timer being used. It is also important to insure that all sources of hardware interrupts are disabled during execution of the tests. This insures that the directive time reported does not include any interrupt time.