A nurse is caring for a client who has multiple traumas foll…

Questions

A nurse is cаring fоr а client whо hаs multiple traumas fоllowing a motor-vehicle crash. The spouse, who was driving the vehicle, blames themself for the accident. Which of the following responses should the nurse make?

Dr. Z аnd Ms. L аre cоllаbоrating оn a document. Develop a solution for synchronizing Dr. Z and Ms. L processes (PZ and PL) so that their concurrent accesses to the document do not mess it up. This problem shares similarities with the readers-writers problem that we discussed in class. So we show the solution to the readers-writers problem here for your reference. But pay attention to the differences. Copy-and-paste of the original solution may not work. Reference: solution to the readers-writers problem // Shared data structures semaphore rw_mutex = 1; semaphore mutex = 1; int read_count = 0; Reader process Writer process while(TRUE) {     wait(mutex);     read_count++;     if (read_count == 1)         wait(rw_mutex);     signal(mutex);         // reading         wait(mutex);     read_count--;     if (read_count == 0)         signal(rw_mutex);     signal(mutex); } while(TRUE){      wait(rw_mutex);      //writing       signal(rw_mutex); }       A) [10pts] Assume PZ and PL both can be reading and writing the document. A process can read regardless of whether the other process is reading or writing. When a process is writing, the other process cannot be writing at the same time. Fill in the placeholders in the algorithm below to complete your solution.   // define your shared data structures here   PZ PL while(TRUE) {     if (reading) { // process wants to read // your code here     } elseif (writing) { // process wants to write // your code here        } } // you can skip PL’s code if it is identical to PZ     B) [10pts] Now we add another mode of the processes to the system. In addition to reading and writing, PZ and PL can also be commenting the document. A process can still read regardless of the mode of the other process. Two processes can be commenting at the same time. When a process is writing, the other process cannot be either writing or commenting at the same time. Fill in the placeholders in the algorithm below to complete your solution.   // define your shared data structures here   PZ PL while(TRUE) {     if (reading) { // process wants to read // your code here     } elseif (commenting) { // process wants to                                       // comment // your code here     } elseif (writing) { // process wants to write // your code here        } } // you can skip PL’s code if it is identical to PZ