SNIP_CLASSIC_RTE_SECTION_5_7_6_Reentrancy

5.7.6 Reentrancy A runnable entity is declared within a software-component type. The RTE ensures that concurrent activation of same instance of a runnable entity is only allowed if the runnables attribute "canBeInvokedConcurrently" is set to TRUE (see Section 4.2.7). When a software-component is multiple instantiated each separate instance has its own instance of the runnable entities in the software-component. Whilst instances of a software-component are independent, the runnable entities instances share the same code ([SWS_Rte_03015]). Example 5.31 Consider a component c1 with runnable entity re1 and entry point ep that is instantiated twice on the same ECU. The two instances of c1 each has a separate instance of re1. Software-component instances are scheduled independently and therefore each instance of re1 could be concurrently executing ep. The potential for concurrent execution of runnable entities when multiple instances of a software-component are created means that each entry point should be reentrant.