Final answer:
The parameter c in cwait and csignal refers to a condition variable used to synchronize concurrent processes in computing. cwait makes a process wait for a condition, while csignal signals that a condition has changed, allowing waiting processes to proceed.
Step-by-step explanation:
In computing, cwait and csignal are functions used in the synchronization of concurrent processes. The parameter c refers to a condition variable associated with these functions. In the context of synchronization, cwait is a function that causes the calling process to wait if certain conditions are not met. This waiting could potentially be for shared resources to become free, for instance. On the other hand, csignal is used to signal other processes that they may proceed, often because the condition that caused them to wait has changed, such as a shared resource becoming available. These functions are commonly used in programming with concurrent processes to avoid race conditions and ensure proper sequencing of process activities.