Monitors: Select all of the following statements that are true. Only one process can be active in the monitor at a time. The Urgent Queue stores suspended processes that are waiting on a spe condition. When the "Signal and Continue"-approach (Mesa semantics) is applied, th signaling process P is placed on the Urgent Queue. A process enters the monitor by calling one of its monitor procedures.

Help pls: Write the definitions of the following functions: getRemainingTransactionTime setCurrentCustomer getCurrentCustomerNumber getCurrentCustomerArrivalTime getCurrentCustomerWaitingTime getCurrentCustomerTransactionTime of the class serverType defined in the section Application of Queues: Simulation. serverType::serverType() {     status = "free";     transactionTime = 0; } bool serverType::isFree() const {     return (status == "free"); } void serverType::setBusy() {     status = "busy"; } void serverType::setFree() {     status = "free"; } void serverType::setTransactionTime(int t) {     transactionTime = t; } void serverType::setTransactionTime() {     //TODO: uncomment once getTransactionTime is defined     /*     int time;          time = currentCustomer.getTransactionTime();     transactionTime = time;     */ } void serverType::decreaseTransactionTime() {     transactionTime--; }

Problem 3: Almost a priority queue. Design a data structure that supports the followingoperations for almost a priority queue:(i) FindSecondSmallest() which returns the second smallest item in the data structure.(ii) Insert(x) which inserts item x to the data structure.(iii) DeleteSecondSmallest() which removes the second smallest item from the datastructure.Your data structure should implement the operation FindSecondSmallest() in O(1), andthe other two operations in O(log n), where n is the number of elements in the datastructure.

Parser - setup Make sure to make a Parser class (does not derive from anything). It must have a constructor that accepts your collection of Tokens. We will be treating the collection of tokens as a queue - taking off the front. It isn't necessary to use a Java Queue, but you may. We will add three helper functions to parser. These should be private: matchAndRemove - accepts a token type. Looks at the next token in the collection: If the passed in token type matches the next token's type, remove that token and return it. If the passed in token type DOES NOT match the next token's type (or there are no more tokens) return null. expectEndsOfLine - uses matchAndRemove to match and discard one or more ENDOFLINE tokens. Throw a SyntaxErrorException if no ENDOFLINE was found. peek - accepts an integer and looks ahead that many tokens and returns that token. Returns null if there aren't enough tokens to fulfill the request. Parser - parse Make sure to make a public parse method. There are no…

Given the following specification of a front operation for queue:ItemType Front Function: Returns a copy of the front item on the queue. Precondition: Queue is not empty. Postcondition: Queue is not changed. 1. Write this operation as client code, using operations from the QueType class. (Remember,the client code has no access to the private variables of the class). 2. Write this function as a new member function of the QueType class.   help me with complete code

Runtime stack stores the activation records of the subprograms to determine the referencing environments for local and non-local variables referenced inside the subprograms. Show the stack with all activation record instances, including static and dynamic chains, when execution reaches position 1 in the following skeletal program. Assume bigsub is at level 1. function bigsub() { function a() { function b() { -1 }// end of b function c() { b(); }// end of c ... c(); }// end of a ... a(); ... }// end of bigsub